diff options
Diffstat (limited to 'libxcb/src')
| -rw-r--r-- | libxcb/src/c_client.py | 4633 | ||||
| -rw-r--r-- | libxcb/src/config.h | 80 | ||||
| -rw-r--r-- | libxcb/src/dummyin6.h | 168 | ||||
| -rw-r--r-- | libxcb/src/makefile | 22 | ||||
| -rw-r--r-- | libxcb/src/makefile.srcs | 13 | ||||
| -rw-r--r-- | libxcb/src/xcb.h | 1014 | ||||
| -rw-r--r-- | libxcb/src/xcb_auth.c | 729 | ||||
| -rw-r--r-- | libxcb/src/xcb_conn.c | 48 | ||||
| -rw-r--r-- | libxcb/src/xcb_ext.c | 2 | ||||
| -rw-r--r-- | libxcb/src/xcb_in.c | 1406 | ||||
| -rw-r--r-- | libxcb/src/xcb_out.c | 7 | ||||
| -rw-r--r-- | libxcb/src/xcb_util.c | 867 | ||||
| -rw-r--r-- | libxcb/src/xcb_windefs.h | 13 | ||||
| -rw-r--r-- | libxcb/src/xcb_xid.c | 2 | ||||
| -rw-r--r-- | libxcb/src/xcbint.h | 416 |
15 files changed, 4888 insertions, 4532 deletions
diff --git a/libxcb/src/c_client.py b/libxcb/src/c_client.py index 3e77e9ef2..f93e2a69d 100644 --- a/libxcb/src/c_client.py +++ b/libxcb/src/c_client.py @@ -1,2316 +1,2317 @@ -#!/usr/bin/env python -from xml.etree.cElementTree import * -from os.path import basename -from functools import reduce -import getopt -import sys -import re - -# Jump to the bottom of this file for the main routine - -# Some hacks to make the API more readable, and to keep backwards compability -_cname_re = re.compile('([A-Z0-9][a-z]+|[A-Z0-9]+(?![a-z])|[a-z]+)') -_cname_special_cases = {'DECnet':'decnet'} - -_extension_special_cases = ['XPrint', 'XCMisc', 'BigRequests'] - -_cplusplus_annoyances = {'class' : '_class', - 'new' : '_new', - 'delete': '_delete'} -_c_keywords = {'default' : '_default'} - -_hlines = [] -_hlevel = 0 -_clines = [] -_clevel = 0 -_ns = None - -# global variable to keep track of serializers and -# switch data types due to weird dependencies -finished_serializers = [] -finished_sizeof = [] -finished_switch = [] - -def _h(fmt, *args): - ''' - Writes the given line to the header file. - ''' - _hlines[_hlevel].append(fmt % args) - -def _c(fmt, *args): - ''' - Writes the given line to the source file. - ''' - _clines[_clevel].append(fmt % args) - -def _hc(fmt, *args): - ''' - Writes the given line to both the header and source files. - ''' - _h(fmt, *args) - _c(fmt, *args) - -# XXX See if this level thing is really necessary. -def _h_setlevel(idx): - ''' - Changes the array that header lines are written to. - Supports writing different sections of the header file. - ''' - global _hlevel - while len(_hlines) <= idx: - _hlines.append([]) - _hlevel = idx - -def _c_setlevel(idx): - ''' - Changes the array that source lines are written to. - Supports writing to different sections of the source file. - ''' - global _clevel - while len(_clines) <= idx: - _clines.append([]) - _clevel = idx - -def _n_item(str): - ''' - Does C-name conversion on a single string fragment. - Uses a regexp with some hard-coded special cases. - ''' - if str in _cname_special_cases: - return _cname_special_cases[str] - else: - split = _cname_re.finditer(str) - name_parts = [match.group(0) for match in split] - return '_'.join(name_parts) - -def _cpp(str): - ''' - Checks for certain C++ reserved words and fixes them. - ''' - if str in _cplusplus_annoyances: - return _cplusplus_annoyances[str] - elif str in _c_keywords: - return _c_keywords[str] - else: - return str - -def _ext(str): - ''' - Does C-name conversion on an extension name. - Has some additional special cases on top of _n_item. - ''' - if str in _extension_special_cases: - return _n_item(str).lower() - else: - return str.lower() - -def _n(list): - ''' - Does C-name conversion on a tuple of strings. - Different behavior depending on length of tuple, extension/not extension, etc. - Basically C-name converts the individual pieces, then joins with underscores. - ''' - if len(list) == 1: - parts = list - elif len(list) == 2: - parts = [list[0], _n_item(list[1])] - elif _ns.is_ext: - parts = [list[0], _ext(list[1])] + [_n_item(i) for i in list[2:]] - else: - parts = [list[0]] + [_n_item(i) for i in list[1:]] - return '_'.join(parts).lower() - -def _t(list): - ''' - Does C-name conversion on a tuple of strings representing a type. - Same as _n but adds a "_t" on the end. - ''' - if len(list) == 1: - parts = list - elif len(list) == 2: - parts = [list[0], _n_item(list[1]), 't'] - elif _ns.is_ext: - parts = [list[0], _ext(list[1])] + [_n_item(i) for i in list[2:]] + ['t'] - else: - parts = [list[0]] + [_n_item(i) for i in list[1:]] + ['t'] - return '_'.join(parts).lower() - - -def c_open(self): - ''' - Exported function that handles module open. - Opens the files and writes out the auto-generated comment, header file includes, etc. - ''' - global _ns - _ns = self.namespace - _ns.c_ext_global_name = _n(_ns.prefix + ('id',)) - - # Build the type-name collision avoidance table used by c_enum - build_collision_table() - - _h_setlevel(0) - _c_setlevel(0) - - _hc('/*') - _hc(' * This file generated automatically from %s by c_client.py.', _ns.file) - _hc(' * Edit at your peril.') - _hc(' */') - _hc('') - - _h('/**') - _h(' * @defgroup XCB_%s_API XCB %s API', _ns.ext_name, _ns.ext_name) - _h(' * @brief %s XCB Protocol Implementation.', _ns.ext_name) - _h(' * @{') - _h(' **/') - _h('') - _h('#ifndef __%s_H', _ns.header.upper()) - _h('#define __%s_H', _ns.header.upper()) - _h('') - _h('#include "xcb.h"') - - _c('#include <stdlib.h>') - _c('#include <string.h>') - _c('#include <assert.h>') - _c('#include "xcbext.h"') - _c('#include "%s.h"', _ns.header) - - if _ns.is_ext: - for (n, h) in self.imports: - _hc('#include "%s.h"', h) - - _h('') - _h('#ifdef __cplusplus') - _h('extern "C" {') - _h('#endif') - - if _ns.is_ext: - _h('') - _h('#define XCB_%s_MAJOR_VERSION %s', _ns.ext_name.upper(), _ns.major_version) - _h('#define XCB_%s_MINOR_VERSION %s', _ns.ext_name.upper(), _ns.minor_version) - _h(' ') #XXX - _h('extern xcb_extension_t %s;', _ns.c_ext_global_name) - - _c('') - _c('xcb_extension_t %s = { "%s", 0 };', _ns.c_ext_global_name, _ns.ext_xname) - -def c_close(self): - ''' - Exported function that handles module close. - Writes out all the stored content lines, then closes the files. - ''' - _h_setlevel(2) - _c_setlevel(2) - _hc('') - - _h('') - _h('#ifdef __cplusplus') - _h('}') - _h('#endif') - - _h('') - _h('#endif') - _h('') - _h('/**') - _h(' * @}') - _h(' */') - - # Write header file - hfile = open('%s.h' % _ns.header, 'w') - for list in _hlines: - for line in list: - hfile.write(line) - hfile.write('\n') - hfile.close() - - # Write source file - cfile = open('%s.c' % _ns.header, 'w') - for list in _clines: - for line in list: - cfile.write(line) - cfile.write('\n') - cfile.close() - -def build_collision_table(): - global namecount - namecount = {} - - for v in module.types.values(): - name = _t(v[0]) - namecount[name] = (namecount.get(name) or 0) + 1 - -def c_enum(self, name): - ''' - Exported function that handles enum declarations. - ''' - - tname = _t(name) - if namecount[tname] > 1: - tname = _t(name + ('enum',)) - - _h_setlevel(0) - _h('') - _h('typedef enum %s {', tname) - - count = len(self.values) - - for (enam, eval) in self.values: - count = count - 1 - equals = ' = ' if eval != '' else '' - comma = ',' if count > 0 else '' - _h(' %s%s%s%s', _n(name + (enam,)).upper(), equals, eval, comma) - - _h('} %s;', tname) - -def _c_type_setup(self, name, postfix): - ''' - Sets up all the C-related state by adding additional data fields to - all Field and Type objects. Here is where we figure out most of our - variable and function names. - - Recurses into child fields and list member types. - ''' - # Do all the various names in advance - self.c_type = _t(name + postfix) - self.c_wiretype = 'char' if self.c_type == 'void' else self.c_type - - self.c_iterator_type = _t(name + ('iterator',)) - self.c_next_name = _n(name + ('next',)) - self.c_end_name = _n(name + ('end',)) - - self.c_request_name = _n(name) - self.c_checked_name = _n(name + ('checked',)) - self.c_unchecked_name = _n(name + ('unchecked',)) - self.c_reply_name = _n(name + ('reply',)) - self.c_reply_type = _t(name + ('reply',)) - self.c_cookie_type = _t(name + ('cookie',)) - - self.need_aux = False - self.need_serialize = False - self.need_sizeof = False - - self.c_aux_name = _n(name + ('aux',)) - self.c_aux_checked_name = _n(name + ('aux', 'checked')) - self.c_aux_unchecked_name = _n(name + ('aux', 'unchecked')) - self.c_serialize_name = _n(name + ('serialize',)) - self.c_unserialize_name = _n(name + ('unserialize',)) - self.c_unpack_name = _n(name + ('unpack',)) - self.c_sizeof_name = _n(name + ('sizeof',)) - - # special case: structs where variable size fields are followed by fixed size fields - self.var_followed_by_fixed_fields = False - - if self.is_switch: - self.need_serialize = True - self.c_container = 'struct' - for bitcase in self.bitcases: - bitcase.c_field_name = _cpp(bitcase.field_name) - bitcase_name = bitcase.field_type if bitcase.type.has_name else name - _c_type_setup(bitcase.type, bitcase_name, ()) - - elif self.is_container: - - self.c_container = 'union' if self.is_union else 'struct' - prev_varsized_field = None - prev_varsized_offset = 0 - first_field_after_varsized = None - - for field in self.fields: - _c_type_setup(field.type, field.field_type, ()) - if field.type.is_list: - _c_type_setup(field.type.member, field.field_type, ()) - if (field.type.nmemb is None): - self.need_sizeof = True - - field.c_field_type = _t(field.field_type) - field.c_field_const_type = ('' if field.type.nmemb == 1 else 'const ') + field.c_field_type - field.c_field_name = _cpp(field.field_name) - field.c_subscript = '[%d]' % field.type.nmemb if (field.type.nmemb and field.type.nmemb > 1) else '' - field.c_pointer = ' ' if field.type.nmemb == 1 else '*' - - # correct the c_pointer field for variable size non-list types - if not field.type.fixed_size() and field.c_pointer == ' ': - field.c_pointer = '*' - if field.type.is_list and not field.type.member.fixed_size(): - field.c_pointer = '*' - - if field.type.is_switch: - field.c_pointer = '*' - field.c_field_const_type = 'const ' + field.c_field_type - self.need_aux = True - elif not field.type.fixed_size() and not field.type.is_bitcase: - self.need_sizeof = True - - field.c_iterator_type = _t(field.field_type + ('iterator',)) # xcb_fieldtype_iterator_t - field.c_iterator_name = _n(name + (field.field_name, 'iterator')) # xcb_container_field_iterator - field.c_accessor_name = _n(name + (field.field_name,)) # xcb_container_field - field.c_length_name = _n(name + (field.field_name, 'length')) # xcb_container_field_length - field.c_end_name = _n(name + (field.field_name, 'end')) # xcb_container_field_end - - field.prev_varsized_field = prev_varsized_field - field.prev_varsized_offset = prev_varsized_offset - - if prev_varsized_offset == 0: - first_field_after_varsized = field - field.first_field_after_varsized = first_field_after_varsized - - if field.type.fixed_size(): - prev_varsized_offset += field.type.size - # special case: intermixed fixed and variable size fields - if prev_varsized_field is not None and not field.type.is_pad and field.wire: - if not self.is_union: - self.need_serialize = True - self.var_followed_by_fixed_fields = True - else: - self.last_varsized_field = field - prev_varsized_field = field - prev_varsized_offset = 0 - - if self.var_followed_by_fixed_fields: - if field.type.fixed_size(): - field.prev_varsized_field = None - - if self.need_serialize: - # when _unserialize() is wanted, create _sizeof() as well for consistency reasons - self.need_sizeof = True - - # as switch does never appear at toplevel, - # continue here with type construction - if self.is_switch: - if self.c_type not in finished_switch: - finished_switch.append(self.c_type) - # special: switch C structs get pointer fields for variable-sized members - _c_complex(self) - for bitcase in self.bitcases: - bitcase_name = bitcase.type.name if bitcase.type.has_name else name - _c_accessors(bitcase.type, bitcase_name, bitcase_name) - # no list with switch as element, so no call to - # _c_iterator(field.type, field_name) necessary - - if not self.is_bitcase: - if self.need_serialize: - if self.c_serialize_name not in finished_serializers: - finished_serializers.append(self.c_serialize_name) - _c_serialize('serialize', self) - - # _unpack() and _unserialize() are only needed for special cases: - # switch -> unpack - # special cases -> unserialize - if self.is_switch or self.var_followed_by_fixed_fields: - _c_serialize('unserialize', self) - - if self.need_sizeof: - if self.c_sizeof_name not in finished_sizeof: - if not module.namespace.is_ext or self.name[:2] == module.namespace.prefix: - finished_sizeof.append(self.c_sizeof_name) - _c_serialize('sizeof', self) -# _c_type_setup() - -def _c_helper_absolute_name(prefix, field=None): - """ - turn prefix, which is a list of tuples (name, separator, Type obj) into a string - representing a valid name in C (based on the context) - if field is not None, append the field name as well - """ - prefix_str = '' - for name, sep, obj in prefix: - prefix_str += name - if '' == sep: - sep = '->' - if ((obj.is_bitcase and obj.has_name) or # named bitcase - (obj.is_switch and len(obj.parents)>1)): - sep = '.' - prefix_str += sep - if field is not None: - prefix_str += _cpp(field.field_name) - return prefix_str -# _c_absolute_name - -def _c_helper_field_mapping(complex_type, prefix, flat=False): - """ - generate absolute names, based on prefix, for all fields starting from complex_type - if flat == True, nested complex types are not taken into account - """ - all_fields = {} - if complex_type.is_switch: - for b in complex_type.bitcases: - if b.type.has_name: - switch_name, switch_sep, switch_type = prefix[-1] - bitcase_prefix = prefix + [(b.type.name[-1], '.', b.type)] - else: - bitcase_prefix = prefix - - if (True==flat and not b.type.has_name) or False==flat: - all_fields.update(_c_helper_field_mapping(b.type, bitcase_prefix, flat)) - else: - for f in complex_type.fields: - fname = _c_helper_absolute_name(prefix, f) - if f.field_name in all_fields: - raise Exception("field name %s has been registered before" % f.field_name) - - all_fields[f.field_name] = (fname, f) - if f.type.is_container and flat==False: - if f.type.is_bitcase and not f.type.has_name: - new_prefix = prefix - elif f.type.is_switch and len(f.type.parents)>1: - # nested switch gets another separator - new_prefix = prefix+[(f.c_field_name, '.', f.type)] - else: - new_prefix = prefix+[(f.c_field_name, '->', f.type)] - all_fields.update(_c_helper_field_mapping(f.type, new_prefix, flat)) - - return all_fields -# _c_field_mapping() - -def _c_helper_resolve_field_names (prefix): - """ - get field names for all objects in the prefix array - """ - all_fields = {} - tmp_prefix = [] - # look for fields in the remaining containers - for idx, p in enumerate(prefix): - name, sep, obj = p - if ''==sep: - # sep can be preset in prefix, if not, make a sensible guess - sep = '.' if (obj.is_switch or obj.is_bitcase) else '->' - # exception: 'toplevel' object (switch as well!) always have sep '->' - sep = '->' if idx<1 else sep - if not obj.is_bitcase or (obj.is_bitcase and obj.has_name): - tmp_prefix.append((name, sep, obj)) - all_fields.update(_c_helper_field_mapping(obj, tmp_prefix, flat=True)) - - return all_fields -# _c_helper_resolve_field_names - -def get_expr_fields(self): - """ - get the Fields referenced by switch or list expression - """ - def get_expr_field_names(expr): - if expr.op is None: - if expr.lenfield_name is not None: - return [expr.lenfield_name] - else: - # constant value expr - return [] - else: - if expr.op == '~': - return get_expr_field_names(expr.rhs) - elif expr.op == 'popcount': - return get_expr_field_names(expr.rhs) - elif expr.op == 'sumof': - # sumof expr references another list, - # we need that list's length field here - field = None - for f in expr.lenfield_parent.fields: - if f.field_name == expr.lenfield_name: - field = f - break - if field is None: - raise Exception("list field '%s' referenced by sumof not found" % expr.lenfield_name) - # referenced list + its length field - return [expr.lenfield_name] + get_expr_field_names(field.type.expr) - elif expr.op == 'enumref': - return [] - else: - return get_expr_field_names(expr.lhs) + get_expr_field_names(expr.rhs) - # get_expr_field_names() - - # resolve the field names with the parent structure(s) - unresolved_fields_names = get_expr_field_names(self.expr) - - # construct prefix from self - prefix = [('', '', p) for p in self.parents] - if self.is_container: - prefix.append(('', '', self)) - - all_fields = _c_helper_resolve_field_names (prefix) - resolved_fields_names = list(filter(lambda x: x in all_fields.keys(), unresolved_fields_names)) - if len(unresolved_fields_names) != len(resolved_fields_names): - raise Exception("could not resolve all fields for %s" % self.name) - - resolved_fields = [all_fields[n][1] for n in resolved_fields_names] - return resolved_fields -# get_expr_fields() - -def resolve_expr_fields(complex_obj): - """ - find expr fields appearing in complex_obj and descendents that cannot be resolved within complex_obj - these are normally fields that need to be given as function parameters - """ - all_fields = [] - expr_fields = [] - unresolved = [] - - for field in complex_obj.fields: - all_fields.append(field) - if field.type.is_switch or field.type.is_list: - expr_fields += get_expr_fields(field.type) - if field.type.is_container: - expr_fields += resolve_expr_fields(field.type) - - # try to resolve expr fields - for e in expr_fields: - if e not in all_fields and e not in unresolved: - unresolved.append(e) - return unresolved -# resolve_expr_fields() - -def get_serialize_params(context, self, buffer_var='_buffer', aux_var='_aux'): - """ - functions like _serialize(), _unserialize(), and _unpack() sometimes need additional parameters: - E.g. in order to unpack switch, extra parameters might be needed to evaluate the switch - expression. This function tries to resolve all fields within a structure, and returns the - unresolved fields as the list of external parameters. - """ - def add_param(params, param): - if param not in params: - params.append(param) - - # collect all fields into param_fields - param_fields = [] - wire_fields = [] - - for field in self.fields: - if field.visible: - # the field should appear as a parameter in the function call - param_fields.append(field) - if field.wire and not field.auto: - if field.type.fixed_size() and not self.is_switch: - # field in the xcb_out structure - wire_fields.append(field) - # fields like 'pad0' are skipped! - - # in case of switch, parameters always contain any fields referenced in the switch expr - # we do not need any variable size fields here, as the switch data type contains both - # fixed and variable size fields - if self.is_switch: - param_fields = get_expr_fields(self) - - # _serialize()/_unserialize()/_unpack() function parameters - # note: don't use set() for params, it is unsorted - params = [] - - # 1. the parameter for the void * buffer - if 'serialize' == context: - params.append(('void', '**', buffer_var)) - elif context in ('unserialize', 'unpack', 'sizeof'): - params.append(('const void', '*', buffer_var)) - - # 2. any expr fields that cannot be resolved within self and descendants - unresolved_fields = resolve_expr_fields(self) - for f in unresolved_fields: - add_param(params, (f.c_field_type, '', f.c_field_name)) - - # 3. param_fields contain the fields necessary to evaluate the switch expr or any other fields - # that do not appear in the data type struct - for p in param_fields: - if self.is_switch: - typespec = p.c_field_const_type - pointerspec = p.c_pointer - add_param(params, (typespec, pointerspec, p.c_field_name)) - else: - if p.visible and not p.wire and not p.auto: - typespec = p.c_field_type - pointerspec = '' - add_param(params, (typespec, pointerspec, p.c_field_name)) - - # 4. aux argument - if 'serialize' == context: - add_param(params, ('const %s' % self.c_type, '*', aux_var)) - elif 'unserialize' == context: - add_param(params, ('%s' % self.c_type, '**', aux_var)) - elif 'unpack' == context: - add_param(params, ('%s' % self.c_type, '*', aux_var)) - - # 5. switch contains all variable size fields as struct members - # for other data types though, these have to be supplied separately - # this is important for the special case of intermixed fixed and - # variable size fields - if not self.is_switch and 'serialize' == context: - for p in param_fields: - if not p.type.fixed_size(): - add_param(params, (p.c_field_const_type, '*', p.c_field_name)) - - return (param_fields, wire_fields, params) -# get_serialize_params() - -def _c_serialize_helper_insert_padding(context, code_lines, space, postpone): - code_lines.append('%s /* insert padding */' % space) - code_lines.append('%s xcb_pad = -xcb_block_len & 3;' % space) -# code_lines.append('%s printf("automatically inserting padding: %%%%d\\n", xcb_pad);' % space) - code_lines.append('%s xcb_buffer_len += xcb_block_len + xcb_pad;' % space) - - if not postpone: - code_lines.append('%s if (0 != xcb_pad) {' % space) - - if 'serialize' == context: - code_lines.append('%s xcb_parts[xcb_parts_idx].iov_base = xcb_pad0;' % space) - code_lines.append('%s xcb_parts[xcb_parts_idx].iov_len = xcb_pad;' % space) - code_lines.append('%s xcb_parts_idx++;' % space) - elif context in ('unserialize', 'unpack', 'sizeof'): - code_lines.append('%s xcb_tmp += xcb_pad;' % space) - - code_lines.append('%s xcb_pad = 0;' % space) - code_lines.append('%s }' % space) - - code_lines.append('%s xcb_block_len = 0;' % space) - - # keep tracking of xcb_parts entries for serialize - return 1 -# _c_serialize_helper_insert_padding() - -def _c_serialize_helper_switch(context, self, complex_name, - code_lines, temp_vars, - space, prefix): - count = 0 - switch_expr = _c_accessor_get_expr(self.expr, None) - - for b in self.bitcases: - bitcase_expr = _c_accessor_get_expr(b.type.expr, None) - code_lines.append(' if(%s & %s) {' % (switch_expr, bitcase_expr)) -# code_lines.append(' printf("switch %s: entering bitcase section %s (mask=%%%%d)...\\n", %s);' % -# (self.name[-1], b.type.name[-1], bitcase_expr)) - b_prefix = prefix - if b.type.has_name: - b_prefix = prefix + [(b.c_field_name, '.', b.type)] - - count += _c_serialize_helper_fields(context, b.type, - code_lines, temp_vars, - "%s " % space, - b_prefix, - is_bitcase = True) - code_lines.append(' }') - -# if 'serialize' == context: -# count += _c_serialize_helper_insert_padding(context, code_lines, space, False) -# elif context in ('unserialize', 'unpack', 'sizeof'): -# # padding -# code_lines.append('%s xcb_pad = -xcb_block_len & 3;' % space) -# code_lines.append('%s xcb_buffer_len += xcb_block_len + xcb_pad;' % space) - - return count -# _c_serialize_helper_switch - -def _c_serialize_helper_switch_field(context, self, field, c_switch_variable, prefix): - """ - handle switch by calling _serialize() or _unpack(), depending on context - """ - # switch is handled by this function as a special case - param_fields, wire_fields, params = get_serialize_params(context, self) - field_mapping = _c_helper_field_mapping(self, prefix) - prefix_str = _c_helper_absolute_name(prefix) - - # find the parameters that need to be passed to _serialize()/_unpack(): - # all switch expr fields must be given as parameters - args = get_expr_fields(field.type) - # length fields for variable size types in switch, normally only some of need - # need to be passed as parameters - switch_len_fields = resolve_expr_fields(field.type) - - # a switch field at this point _must_ be a bitcase field - # we require that bitcases are "self-contiguous" - bitcase_unresolved = resolve_expr_fields(self) - if len(bitcase_unresolved) != 0: - raise Exception('unresolved fields within bitcase is not supported at this point') - - # get the C names for the parameters - c_field_names = '' - for a in switch_len_fields: - c_field_names += "%s, " % field_mapping[a.c_field_name][0] - for a in args: - c_field_names += "%s, " % field_mapping[a.c_field_name][0] - - # call _serialize()/_unpack() to determine the actual size - if 'serialize' == context: - length = "%s(&%s, %s&%s%s)" % (field.type.c_serialize_name, c_switch_variable, - c_field_names, prefix_str, field.c_field_name) - elif context in ('unserialize', 'unpack'): - length = "%s(xcb_tmp, %s&%s%s)" % (field.type.c_unpack_name, - c_field_names, prefix_str, field.c_field_name) - - return length -# _c_serialize_helper_switch_field() - -def _c_serialize_helper_list_field(context, self, field, - code_lines, temp_vars, - space, prefix): - """ - helper function to cope with lists of variable length - """ - expr = field.type.expr - prefix_str = _c_helper_absolute_name(prefix) - param_fields, wire_fields, params = get_serialize_params('sizeof', self) - param_names = [p[2] for p in params] - - expr_fields_names = [f.field_name for f in get_expr_fields(field.type)] - resolved = list(filter(lambda x: x in param_names, expr_fields_names)) - unresolved = list(filter(lambda x: x not in param_names, expr_fields_names)) - - field_mapping = {} - for r in resolved: - field_mapping[r] = (r, None) - - if len(unresolved)>0: - tmp_prefix = prefix - if len(tmp_prefix)==0: - raise Exception("found an empty prefix while resolving expr field names for list %s", - field.c_field_name) - - field_mapping.update(_c_helper_resolve_field_names(prefix)) - resolved += list(filter(lambda x: x in field_mapping, unresolved)) - unresolved = list(filter(lambda x: x not in field_mapping, unresolved)) - if len(unresolved)>0: - raise Exception('could not resolve the length fields required for list %s' % field.c_field_name) - - list_length = _c_accessor_get_expr(expr, field_mapping) - - # default: list with fixed size elements - length = '%s * sizeof(%s)' % (list_length, field.type.member.c_wiretype) - - # list with variable-sized elements - if not field.type.member.fixed_size(): - length = '' - if context in ('unserialize', 'sizeof', 'unpack'): - int_i = ' unsigned int i;' - xcb_tmp_len = ' unsigned int xcb_tmp_len;' - if int_i not in temp_vars: - temp_vars.append(int_i) - if xcb_tmp_len not in temp_vars: - temp_vars.append(xcb_tmp_len) - # loop over all list elements and call sizeof repeatedly - # this should be a bit faster than using the iterators - code_lines.append("%s for(i=0; i<%s; i++) {" % (space, list_length)) - code_lines.append("%s xcb_tmp_len = %s(xcb_tmp);" % - (space, field.type.c_sizeof_name)) - code_lines.append("%s xcb_block_len += xcb_tmp_len;" % space) - code_lines.append("%s xcb_tmp += xcb_tmp_len;" % space) - code_lines.append("%s }" % space) - - elif 'serialize' == context: - code_lines.append('%s xcb_parts[xcb_parts_idx].iov_len = 0;' % space) - code_lines.append('%s xcb_tmp = (char *) %s%s;' % (space, prefix_str, field.c_field_name)) - code_lines.append('%s for(i=0; i<%s; i++) { ' % (space, list_length)) - code_lines.append('%s xcb_block_len = %s(xcb_tmp);' % (space, field.type.c_sizeof_name)) - code_lines.append('%s xcb_parts[xcb_parts_idx].iov_len += xcb_block_len;' % space) - code_lines.append('%s }' % space) - code_lines.append('%s xcb_block_len = xcb_parts[xcb_parts_idx].iov_len;' % space) - - return length -# _c_serialize_helper_list_field() - -def _c_serialize_helper_fields_fixed_size(context, self, field, - code_lines, temp_vars, - space, prefix): - # keep the C code a bit more readable by giving the field name - if not self.is_bitcase: - code_lines.append('%s /* %s.%s */' % (space, self.c_type, field.c_field_name)) - else: - scoped_name = [p[2].c_type if idx==0 else p[0] for idx, p in enumerate(prefix)] - typename = reduce(lambda x,y: "%s.%s" % (x, y), scoped_name) - code_lines.append('%s /* %s.%s */' % (space, typename, field.c_field_name)) - - abs_field_name = _c_helper_absolute_name(prefix, field) - # default for simple cases: call sizeof() - length = "sizeof(%s)" % field.c_field_type - - if context in ('unserialize', 'unpack', 'sizeof'): - # default: simple cast - value = ' %s = *(%s *)xcb_tmp;' % (abs_field_name, field.c_field_type) - - # padding - we could probably just ignore it - if field.type.is_pad and field.type.nmemb > 1: - value = '' - for i in range(field.type.nmemb): - code_lines.append('%s %s[%d] = *(%s *)xcb_tmp;' % - (space, abs_field_name, i, field.c_field_type)) - # total padding = sizeof(pad0) * nmemb - length += " * %d" % field.type.nmemb - - if field.type.is_list: - # no such case in the protocol, cannot be tested and therefore ignored for now - raise Exception('list with fixed number of elemens unhandled in _unserialize()') - - elif 'serialize' == context: - value = ' xcb_parts[xcb_parts_idx].iov_base = (char *) ' - - if field.type.is_expr: - # need to register a temporary variable for the expression in case we know its type - if field.type.c_type is None: - raise Exception("type for field '%s' (expression '%s') unkown" % - (field.field_name, _c_accessor_get_expr(field.type.expr))) - - temp_vars.append(' %s xcb_expr_%s = %s;' % (field.type.c_type, _cpp(field.field_name), - _c_accessor_get_expr(field.type.expr, prefix))) - value += "&xcb_expr_%s;" % _cpp(field.field_name) - - elif field.type.is_pad: - if field.type.nmemb == 1: - value += "&xcb_pad;" - else: - # we could also set it to 0, see definition of xcb_send_request() - value = ' xcb_parts[xcb_parts_idx].iov_base = xcb_pad0;' - length += "*%d" % field.type.nmemb - - else: - # non-list type with fixed size - if field.type.nmemb == 1: - value += "&%s;" % (abs_field_name) - - # list with nmemb (fixed size) elements - else: - value += '%s;' % (abs_field_name) - length = '%d' % field.type.nmemb - - return (value, length) -# _c_serialize_helper_fields_fixed_size() - -def _c_serialize_helper_fields_variable_size(context, self, field, - code_lines, temp_vars, - space, prefix): - prefix_str = _c_helper_absolute_name(prefix) - - if context in ('unserialize', 'unpack', 'sizeof'): - value = '' - var_field_name = 'xcb_tmp' - - # special case: intermixed fixed and variable size fields - if self.var_followed_by_fixed_fields and 'unserialize' == context: - value = ' %s = (%s *)xcb_tmp;' % (field.c_field_name, field.c_field_type) - temp_vars.append(' %s *%s;' % (field.type.c_type, field.c_field_name)) - # special case: switch - if 'unpack' == context: - value = ' %s%s = (%s *)xcb_tmp;' % (prefix_str, field.c_field_name, field.c_field_type) - - elif 'serialize' == context: - # variable size fields appear as parameters to _serialize() if the - # 'toplevel' container is not a switch - prefix_string = prefix_str if prefix[0][2].is_switch else '' - var_field_name = "%s%s" % (prefix_string, field.c_field_name) - value = ' xcb_parts[xcb_parts_idx].iov_base = (char *) %s;' % var_field_name - - length = '' - - code_lines.append('%s /* %s */' % (space, field.c_field_name)) - - if field.type.is_list: - if value != '': - # in any context, list is already a pointer, so the default assignment is ok - code_lines.append("%s%s" % (space, value)) - value = '' - length = _c_serialize_helper_list_field(context, self, field, - code_lines, temp_vars, - space, prefix) - - elif field.type.is_switch: - value = '' - if context == 'serialize': - # the _serialize() function allocates the correct amount memory if given a NULL pointer - value = ' xcb_parts[xcb_parts_idx].iov_base = (char *)0;' - length = _c_serialize_helper_switch_field(context, self, field, - 'xcb_parts[xcb_parts_idx].iov_base', - prefix) - - else: - # in all remaining special cases - call _sizeof() - length = "%s(%s)" % (field.type.c_sizeof_name, var_field_name) - - return (value, length) -# _c_serialize_helper_fields_variable_size - -def _c_serialize_helper_fields(context, self, - code_lines, temp_vars, - space, prefix, is_bitcase): - count = 0 - need_padding = False - prev_field_was_variable = False - - for field in self.fields: - if not field.visible: - if not ((field.wire and not field.auto) or 'unserialize' == context): - continue - - # switch/bitcase: fixed size fields must be considered explicitly - if field.type.fixed_size(): - if self.is_bitcase or self.var_followed_by_fixed_fields: - if prev_field_was_variable and need_padding: - # insert padding -# count += _c_serialize_helper_insert_padding(context, code_lines, space, -# self.var_followed_by_fixed_fields) - prev_field_was_variable = False - - # prefix for fixed size fields - fixed_prefix = prefix - - value, length = _c_serialize_helper_fields_fixed_size(context, self, field, - code_lines, temp_vars, - space, fixed_prefix) - else: - continue - - # fields with variable size - else: - # switch/bitcase: always calculate padding before and after variable sized fields - if need_padding or is_bitcase: - count += _c_serialize_helper_insert_padding(context, code_lines, space, - self.var_followed_by_fixed_fields) - - value, length = _c_serialize_helper_fields_variable_size(context, self, field, - code_lines, temp_vars, - space, prefix) - prev_field_was_variable = True - - # save (un)serialization C code - if '' != value: - code_lines.append('%s%s' % (space, value)) - - if field.type.fixed_size(): - if is_bitcase or self.var_followed_by_fixed_fields: - # keep track of (un)serialized object's size - code_lines.append('%s xcb_block_len += %s;' % (space, length)) - if context in ('unserialize', 'unpack', 'sizeof'): - code_lines.append('%s xcb_tmp += %s;' % (space, length)) - else: - # variable size objects or bitcase: - # value & length might have been inserted earlier for special cases - if '' != length: - # special case: intermixed fixed and variable size fields - if (not field.type.fixed_size() and - self.var_followed_by_fixed_fields and 'unserialize' == context): - temp_vars.append(' int %s_len;' % field.c_field_name) - code_lines.append('%s %s_len = %s;' % (space, field.c_field_name, length)) - code_lines.append('%s xcb_block_len += %s_len;' % (space, field.c_field_name)) - code_lines.append('%s xcb_tmp += %s_len;' % (space, field.c_field_name)) - else: - code_lines.append('%s xcb_block_len += %s;' % (space, length)) - # increase pointer into the byte stream accordingly - if context in ('unserialize', 'sizeof', 'unpack'): - code_lines.append('%s xcb_tmp += xcb_block_len;' % space) - - if 'serialize' == context: - if '' != length: - code_lines.append('%s xcb_parts[xcb_parts_idx].iov_len = %s;' % (space, length)) - code_lines.append('%s xcb_parts_idx++;' % space) - count += 1 - - need_padding = True - if self.var_followed_by_fixed_fields: - need_padding = False - - return count -# _c_serialize_helper_fields() - -def _c_serialize_helper(context, complex_type, - code_lines, temp_vars, - space='', prefix=[]): - # count tracks the number of fields to serialize - count = 0 - - if hasattr(complex_type, 'type'): - self = complex_type.type - complex_name = complex_type.name - else: - self = complex_type - if self.var_followed_by_fixed_fields and 'unserialize' == context: - complex_name = 'xcb_out' - else: - complex_name = '_aux' - - # special case: switch is serialized by evaluating each bitcase separately - if self.is_switch: - count += _c_serialize_helper_switch(context, self, complex_name, - code_lines, temp_vars, - space, prefix) - - # all other data types can be evaluated one field a time - else: - # unserialize & fixed size fields: simply cast the buffer to the respective xcb_out type - if context in ('unserialize', 'unpack', 'sizeof') and not self.var_followed_by_fixed_fields: - code_lines.append('%s xcb_block_len += sizeof(%s);' % (space, self.c_type)) - code_lines.append('%s xcb_tmp += xcb_block_len;' % space) - # probably not needed - #_c_serialize_helper_insert_padding(context, code_lines, space, False) - - count += _c_serialize_helper_fields(context, self, - code_lines, temp_vars, - space, prefix, False) - # "final padding" - count += _c_serialize_helper_insert_padding(context, code_lines, space, False) - - return count -# _c_serialize_helper() - -def _c_serialize(context, self): - """ - depending on the context variable, generate _serialize(), _unserialize(), _unpack(), or _sizeof() - for the ComplexType variable self - """ - _h_setlevel(1) - _c_setlevel(1) - - _hc('') - # _serialize() returns the buffer size - _hc('int') - - if self.is_switch and 'unserialize' == context: - context = 'unpack' - - cases = { 'serialize' : self.c_serialize_name, - 'unserialize' : self.c_unserialize_name, - 'unpack' : self.c_unpack_name, - 'sizeof' : self.c_sizeof_name } - func_name = cases[context] - - param_fields, wire_fields, params = get_serialize_params(context, self) - variable_size_fields = 0 - # maximum space required for type definition of function arguments - maxtypelen = 0 - - # determine N(variable_fields) - for field in param_fields: - # if self.is_switch, treat all fields as if they are variable sized - if not field.type.fixed_size() or self.is_switch: - variable_size_fields += 1 - # determine maxtypelen - for p in params: - maxtypelen = max(maxtypelen, len(p[0]) + len(p[1])) - - # write to .c/.h - indent = ' '*(len(func_name)+2) - param_str = [] - for p in params: - typespec, pointerspec, field_name = p - spacing = ' '*(maxtypelen-len(typespec)-len(pointerspec)) - param_str.append("%s%s%s %s%s /**< */" % (indent, typespec, spacing, pointerspec, field_name)) - # insert function name - param_str[0] = "%s (%s" % (func_name, param_str[0].strip()) - param_str = list(map(lambda x: "%s," % x, param_str)) - for s in param_str[:-1]: - _hc(s) - _h("%s);" % param_str[-1].rstrip(',')) - _c("%s)" % param_str[-1].rstrip(',')) - _c('{') - - code_lines = [] - temp_vars = [] - prefix = [] - - if 'serialize' == context: - if not self.is_switch and not self.var_followed_by_fixed_fields: - _c(' %s *xcb_out = *_buffer;', self.c_type) - _c(' unsigned int xcb_out_pad = -sizeof(%s) & 3;', self.c_type) - _c(' unsigned int xcb_buffer_len = sizeof(%s) + xcb_out_pad;', self.c_type) - else: - _c(' char *xcb_out = *_buffer;') - _c(' unsigned int xcb_buffer_len = 0;') - prefix = [('_aux', '->', self)] - aux_ptr = 'xcb_out' - - elif context in ('unserialize', 'unpack'): - _c(' char *xcb_tmp = (char *)_buffer;') - if not self.is_switch: - if not self.var_followed_by_fixed_fields: - _c(' const %s *_aux = (%s *)_buffer;', self.c_type, self.c_type) - prefix = [('_aux', '->', self)] - else: - _c(' %s xcb_out;', self.c_type) - prefix = [('xcb_out', '.', self)] - else: - aux_var = '_aux' # default for unpack: single pointer - # note: unserialize not generated for switch - if 'unserialize' == context: - aux_var = '(*_aux)' # unserialize: double pointer (!) - prefix = [(aux_var, '->', self)] - aux_ptr = '*_aux' - _c(' unsigned int xcb_buffer_len = 0;') - _c(' unsigned int xcb_block_len = 0;') - _c(' unsigned int xcb_pad = 0;') - - elif 'sizeof' == context: - param_names = [p[2] for p in params] - if self.is_switch: - # switch: call _unpack() - _c(' %s _aux;', self.c_type) - _c(' return %s(%s, &_aux);', self.c_unpack_name, reduce(lambda x,y: "%s, %s" % (x, y), param_names)) - _c('}') - return - elif self.var_followed_by_fixed_fields: - # special case: call _unserialize() - _c(' return %s(%s, NULL);', self.c_unserialize_name, reduce(lambda x,y: "%s, %s" % (x, y), param_names)) - _c('}') - return - else: - _c(' char *xcb_tmp = (char *)_buffer;') - prefix = [('_aux', '->', self)] - - count = _c_serialize_helper(context, self, code_lines, temp_vars, prefix=prefix) - # update variable size fields (only important for context=='serialize' - variable_size_fields = count - if 'serialize' == context: - temp_vars.append(' unsigned int xcb_pad = 0;') - temp_vars.append(' char xcb_pad0[3] = {0, 0, 0};') - temp_vars.append(' struct iovec xcb_parts[%d];' % count) - temp_vars.append(' unsigned int xcb_parts_idx = 0;') - temp_vars.append(' unsigned int xcb_block_len = 0;') - temp_vars.append(' unsigned int i;') - temp_vars.append(' char *xcb_tmp;') - elif 'sizeof' == context: - # neither switch nor intermixed fixed and variable size fields: - # evaluate parameters directly - if not (self.is_switch or self.var_followed_by_fixed_fields): - - # look if we have to declare an '_aux' variable at all - if len(list(filter(lambda x: x.find('_aux')!=-1, code_lines)))>0: - if not self.var_followed_by_fixed_fields: - _c(' const %s *_aux = (%s *)_buffer;', self.c_type, self.c_type) - else: - _c(' %s *_aux = malloc(sizeof(%s));', self.c_type, self.c_type) - - _c(' unsigned int xcb_buffer_len = 0;') - _c(' unsigned int xcb_block_len = 0;') - _c(' unsigned int xcb_pad = 0;') - - _c('') - for t in temp_vars: - _c(t) - _c('') - for l in code_lines: - _c(l) - - # variable sized fields have been collected, now - # allocate memory and copy everything into a continuous memory area - # note: this is not necessary in case of unpack - if context in ('serialize', 'unserialize'): - # unserialize: check for sizeof-only invocation - if 'unserialize' == context: - _c('') - _c(' if (NULL == _aux)') - _c(' return xcb_buffer_len;') - - _c('') - _c(' if (NULL == %s) {', aux_ptr) - _c(' /* allocate memory */') - _c(' %s = malloc(xcb_buffer_len);', aux_ptr) - if 'serialize' == context: - _c(' *_buffer = xcb_out;') - _c(' }') - _c('') - - # serialize: handle variable size fields in a loop - if 'serialize' == context: - if not self.is_switch and not self.var_followed_by_fixed_fields: - if len(wire_fields)>0: - _c(' *xcb_out = *_aux;') - # copy variable size fields into the buffer - if variable_size_fields > 0: - # xcb_out padding - if not self.is_switch and not self.var_followed_by_fixed_fields: - _c(' xcb_tmp = (char*)++xcb_out;') - _c(' xcb_tmp += xcb_out_pad;') - else: - _c(' xcb_tmp = xcb_out;') - - # variable sized fields - _c(' for(i=0; i<xcb_parts_idx; i++) {') - _c(' if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)') - _c(' memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);') - _c(' if (0 != xcb_parts[i].iov_len)') - _c(' xcb_tmp += xcb_parts[i].iov_len;') - _c(' }') - - # unserialize: assign variable size fields individually - if 'unserialize' == context: - _c(' xcb_tmp = ((char *)*_aux)+xcb_buffer_len;') - param_fields.reverse() - for field in param_fields: - if not field.type.fixed_size(): - _c(' xcb_tmp -= %s_len;', field.c_field_name) - _c(' memmove(xcb_tmp, %s, %s_len);', field.c_field_name, field.c_field_name) - _c(' *%s = xcb_out;', aux_ptr) - - _c('') - _c(' return xcb_buffer_len;') - _c('}') -# _c_serialize() - -def _c_iterator_get_end(field, accum): - ''' - Figures out what C code is needed to find the end of a variable-length structure field. - For nested structures, recurses into its last variable-sized field. - For lists, calls the end function - ''' - if field.type.is_container: - accum = field.c_accessor_name + '(' + accum + ')' - return _c_iterator_get_end(field.type.last_varsized_field, accum) - if field.type.is_list: - # XXX we can always use the first way - if field.type.member.is_simple: - return field.c_end_name + '(' + accum + ')' - else: - return field.type.member.c_end_name + '(' + field.c_iterator_name + '(' + accum + '))' - -def _c_iterator(self, name): - ''' - Declares the iterator structure and next/end functions for a given type. - ''' - _h_setlevel(0) - _h('') - _h('/**') - _h(' * @brief %s', self.c_iterator_type) - _h(' **/') - _h('typedef struct %s {', self.c_iterator_type) - _h(' %s *data; /**< */', self.c_type) - _h(' int%s rem; /**< */', ' ' * (len(self.c_type) - 2)) - _h(' int%s index; /**< */', ' ' * (len(self.c_type) - 2)) - _h('} %s;', self.c_iterator_type) - - _h_setlevel(1) - _c_setlevel(1) - _h('') - _h('/**') - _h(' * Get the next element of the iterator') - _h(' * @param i Pointer to a %s', self.c_iterator_type) - _h(' *') - _h(' * Get the next element in the iterator. The member rem is') - _h(' * decreased by one. The member data points to the next') - _h(' * element. The member index is increased by sizeof(%s)', self.c_type) - _h(' */') - _c('') - _hc('') - _hc('/*****************************************************************************') - _hc(' **') - _hc(' ** void %s', self.c_next_name) - _hc(' ** ') - _hc(' ** @param %s *i', self.c_iterator_type) - _hc(' ** @returns void') - _hc(' **') - _hc(' *****************************************************************************/') - _hc(' ') - _hc('void') - _h('%s (%s *i /**< */);', self.c_next_name, self.c_iterator_type) - _c('%s (%s *i /**< */)', self.c_next_name, self.c_iterator_type) - _c('{') - - if not self.fixed_size(): - _c(' %s *R = i->data;', self.c_type) - - if self.is_union: - # FIXME - how to determine the size of a variable size union?? - _c(' /* FIXME - determine the size of the union %s */', self.c_type) - else: - if self.need_sizeof: - _c(' xcb_generic_iterator_t child;') - _c(' child.data = (%s *)(((char *)R) + %s(R));', - self.c_type, self.c_sizeof_name) - _c(' i->index = (char *) child.data - (char *) i->data;') - else: - _c(' xcb_generic_iterator_t child = %s;', _c_iterator_get_end(self.last_varsized_field, 'R')) - _c(' i->index = child.index;') - _c(' --i->rem;') - _c(' i->data = (%s *) child.data;', self.c_type) - - else: - _c(' --i->rem;') - _c(' ++i->data;') - _c(' i->index += sizeof(%s);', self.c_type) - - _c('}') - - _h('') - _h('/**') - _h(' * Return the iterator pointing to the last element') - _h(' * @param i An %s', self.c_iterator_type) - _h(' * @return The iterator pointing to the last element') - _h(' *') - _h(' * Set the current element in the iterator to the last element.') - _h(' * The member rem is set to 0. The member data points to the') - _h(' * last element.') - _h(' */') - _c('') - _hc('') - _hc('/*****************************************************************************') - _hc(' **') - _hc(' ** xcb_generic_iterator_t %s', self.c_end_name) - _hc(' ** ') - _hc(' ** @param %s i', self.c_iterator_type) - _hc(' ** @returns xcb_generic_iterator_t') - _hc(' **') - _hc(' *****************************************************************************/') - _hc(' ') - _hc('xcb_generic_iterator_t') - _h('%s (%s i /**< */);', self.c_end_name, self.c_iterator_type) - _c('%s (%s i /**< */)', self.c_end_name, self.c_iterator_type) - _c('{') - _c(' xcb_generic_iterator_t ret;') - - if self.fixed_size(): - _c(' ret.data = i.data + i.rem;') - _c(' ret.index = i.index + ((char *) ret.data - (char *) i.data);') - _c(' ret.rem = 0;') - else: - _c(' while(i.rem > 0)') - _c(' %s(&i);', self.c_next_name) - _c(' ret.data = i.data;') - _c(' ret.rem = i.rem;') - _c(' ret.index = i.index;') - - _c(' return ret;') - _c('}') - -def _c_accessor_get_length(expr, field_mapping=None): - ''' - Figures out what C code is needed to get a length field. - The field_mapping parameter can be used to change the absolute name of a length field. - For fields that follow a variable-length field, use the accessor. - Otherwise, just reference the structure field directly. - ''' - - lenfield_name = expr.lenfield_name - if lenfield_name is not None: - if field_mapping is not None: - lenfield_name = field_mapping[lenfield_name][0] - - if expr.lenfield is not None and expr.lenfield.prev_varsized_field is not None: - # special case: variable and fixed size fields are intermixed - # if the lenfield is among the fixed size fields, there is no need - # to call a special accessor function like <expr.lenfield.c_accessor_name + '(' + prefix + ')'> - return field_mapping(expr.lenfield_name) - elif expr.lenfield_name is not None: - return lenfield_name - else: - return str(expr.nmemb) - -def _c_accessor_get_expr(expr, field_mapping): - ''' - Figures out what C code is needed to get the length of a list field. - The field_mapping parameter can be used to change the absolute name of a length field. - Recurses for math operations. - Returns bitcount for value-mask fields. - Otherwise, uses the value of the length field. - ''' - lenexp = _c_accessor_get_length(expr, field_mapping) - - if expr.op == '~': - return '(' + '~' + _c_accessor_get_expr(expr.rhs, field_mapping) + ')' - elif expr.op == 'popcount': - return 'xcb_popcount(' + _c_accessor_get_expr(expr.rhs, field_mapping) + ')' - elif expr.op == 'enumref': - enum_name = expr.lenfield_type.name - constant_name = expr.lenfield_name - c_name = _n(enum_name + (constant_name,)).upper() - return c_name - elif expr.op == 'sumof': - # locate the referenced list object - list_obj = expr.lenfield_type - field = None - for f in expr.lenfield_parent.fields: - if f.field_name == expr.lenfield_name: - field = f - break - - if field is None: - raise Exception("list field '%s' referenced by sumof not found" % expr.lenfield_name) - list_name = field_mapping[field.c_field_name][0] - c_length_func = "%s(%s)" % (field.c_length_name, list_name) - # note: xcb_sumof() has only been defined for integers - c_length_func = _c_accessor_get_expr(field.type.expr, field_mapping) - return 'xcb_sumof(%s, %s)' % (list_name, c_length_func) - elif expr.op != None: - return ('(' + _c_accessor_get_expr(expr.lhs, field_mapping) + - ' ' + expr.op + ' ' + - _c_accessor_get_expr(expr.rhs, field_mapping) + ')') - elif expr.bitfield: - return 'xcb_popcount(' + lenexp + ')' - else: - return lenexp - -def type_pad_type(type): - if type == 'void': - return 'char' - return type - -def _c_accessors_field(self, field): - ''' - Declares the accessor functions for a non-list field that follows a variable-length field. - ''' - c_type = self.c_type - - # special case: switch - switch_obj = self if self.is_switch else None - if self.is_bitcase: - switch_obj = self.parents[-1] - if switch_obj is not None: - c_type = switch_obj.c_type - - if field.type.is_simple: - _hc('') - _hc('') - _hc('/*****************************************************************************') - _hc(' ** ') - _hc(' ** %s %s', field.c_field_type, field.c_accessor_name) - _hc(' ** ') - _hc(' ** @param const %s *R', c_type) - _hc(' ** @returns %s', field.c_field_type) - _hc(' **') - _hc(' *****************************************************************************/') - _hc(' ') - _hc('%s', field.c_field_type) - _h('%s (const %s *R /**< */);', field.c_accessor_name, c_type) - _c('%s (const %s *R /**< */)', field.c_accessor_name, c_type) - _c('{') - if field.prev_varsized_field is None: - _c(' return (%s *) (R + 1);', field.c_field_type) - else: - _c(' xcb_generic_iterator_t prev = %s;', _c_iterator_get_end(field.prev_varsized_field, 'R')) - _c(' return * (%s *) ((char *) prev.data + XCB_TYPE_PAD(%s, prev.index) + %d);', - field.c_field_type, type_pad_type(field.first_field_after_varsized.type.c_type), field.prev_varsized_offset) - _c('}') - else: - _hc('') - _hc('') - _hc('/*****************************************************************************') - _hc(' **') - _hc(' ** %s * %s', field.c_field_type, field.c_accessor_name) - _hc(' ** ') - _hc(' ** @param const %s *R', c_type) - _hc(' ** @returns %s *', field.c_field_type) - _hc(' **') - _hc(' *****************************************************************************/') - _hc(' ') - if field.type.is_switch and switch_obj is None: - return_type = 'void *' - else: - return_type = '%s *' % field.c_field_type - - _hc(return_type) - _h('%s (const %s *R /**< */);', field.c_accessor_name, c_type) - _c('%s (const %s *R /**< */)', field.c_accessor_name, c_type) - _c('{') - if field.prev_varsized_field is None: - _c(' return (%s) (R + 1);', return_type) - # note: the special case 'variable fields followed by fixed size fields' - # is not of any consequence here, since the ordering gets - # 'corrected' in the reply function - else: - _c(' xcb_generic_iterator_t prev = %s;', _c_iterator_get_end(field.prev_varsized_field, 'R')) - _c(' return (%s) ((char *) prev.data + XCB_TYPE_PAD(%s, prev.index) + %d);', - return_type, type_pad_type(field.first_field_after_varsized.type.c_type), field.prev_varsized_offset) - _c('}') - - -def _c_accessors_list(self, field): - ''' - Declares the accessor functions for a list field. - Declares a direct-accessor function only if the list members are fixed size. - Declares length and get-iterator functions always. - ''' - list = field.type - c_type = self.c_type - - # special case: switch - # in case of switch, 2 params have to be supplied to certain accessor functions: - # 1. the anchestor object (request or reply) - # 2. the (anchestor) switch object - # the reason is that switch is either a child of a request/reply or nested in another switch, - # so whenever we need to access a length field, we might need to refer to some anchestor type - switch_obj = self if self.is_switch else None - if self.is_bitcase: - switch_obj = self.parents[-1] - if switch_obj is not None: - c_type = switch_obj.c_type - - params = [] - fields = {} - parents = self.parents if hasattr(self, 'parents') else [self] - # 'R': parents[0] is always the 'toplevel' container type - params.append(('const %s *R' % parents[0].c_type, parents[0])) - fields.update(_c_helper_field_mapping(parents[0], [('R', '->', parents[0])], flat=True)) - # auxiliary object for 'R' parameters - R_obj = parents[0] - - if switch_obj is not None: - # now look where the fields are defined that are needed to evaluate - # the switch expr, and store the parent objects in accessor_params and - # the fields in switch_fields - - # 'S': name for the 'toplevel' switch - toplevel_switch = parents[1] - params.append(('const %s *S' % toplevel_switch.c_type, toplevel_switch)) - fields.update(_c_helper_field_mapping(toplevel_switch, [('S', '->', toplevel_switch)], flat=True)) - - # initialize prefix for everything "below" S - prefix_str = '/* %s */ S' % toplevel_switch.name[-1] - prefix = [(prefix_str, '->', toplevel_switch)] - - # look for fields in the remaining containers - for p in parents[2:] + [self]: - # the separator between parent and child is always '.' here, - # because of nested switch statements - if not p.is_bitcase or (p.is_bitcase and p.has_name): - prefix.append((p.name[-1], '.', p)) - fields.update(_c_helper_field_mapping(p, prefix, flat=True)) - - # auxiliary object for 'S' parameter - S_obj = parents[1] - - _h_setlevel(1) - _c_setlevel(1) - if list.member.fixed_size(): - idx = 1 if switch_obj is not None else 0 - _hc('') - _hc('') - _hc('/*****************************************************************************') - _hc(' **') - _hc(' ** %s * %s', field.c_field_type, field.c_accessor_name) - _hc(' ** ') - _hc(' ** @param %s', params[idx][0]) - _hc(' ** @returns %s *', field.c_field_type) - _hc(' **') - _hc(' *****************************************************************************/') - _hc(' ') - _hc('%s *', field.c_field_type) - - _h('%s (%s /**< */);', field.c_accessor_name, params[idx][0]) - _c('%s (%s /**< */)', field.c_accessor_name, params[idx][0]) - - _c('{') - if switch_obj is not None: - _c(' return %s;', fields[field.c_field_name][0]) - elif field.prev_varsized_field is None: - _c(' return (%s *) (R + 1);', field.c_field_type) - else: - _c(' xcb_generic_iterator_t prev = %s;', _c_iterator_get_end(field.prev_varsized_field, 'R')) - _c(' return (%s *) ((char *) prev.data + XCB_TYPE_PAD(%s, prev.index) + %d);', - field.c_field_type, type_pad_type(field.first_field_after_varsized.type.c_type), field.prev_varsized_offset) - _c('}') - - _hc('') - _hc('') - _hc('/*****************************************************************************') - _hc(' **') - _hc(' ** int %s', field.c_length_name) - _hc(' ** ') - _hc(' ** @param const %s *R', c_type) - _hc(' ** @returns int') - _hc(' **') - _hc(' *****************************************************************************/') - _hc(' ') - _hc('int') - if switch_obj is not None: - _hc('%s (const %s *R /**< */,', field.c_length_name, R_obj.c_type) - spacing = ' '*(len(field.c_length_name)+2) - _h('%sconst %s *S /**< */);', spacing, S_obj.c_type) - _c('%sconst %s *S /**< */)', spacing, S_obj.c_type) - length = _c_accessor_get_expr(field.type.expr, fields) - else: - _h('%s (const %s *R /**< */);', field.c_length_name, c_type) - _c('%s (const %s *R /**< */)', field.c_length_name, c_type) - length = _c_accessor_get_expr(field.type.expr, fields) - _c('{') - _c(' return %s;', length) - _c('}') - - if field.type.member.is_simple: - _hc('') - _hc('') - _hc('/*****************************************************************************') - _hc(' **') - _hc(' ** xcb_generic_iterator_t %s', field.c_end_name) - _hc(' ** ') - _hc(' ** @param const %s *R', c_type) - _hc(' ** @returns xcb_generic_iterator_t') - _hc(' **') - _hc(' *****************************************************************************/') - _hc(' ') - _hc('xcb_generic_iterator_t') - if switch_obj is not None: - _hc('%s (const %s *R /**< */,', field.c_end_name, R_obj.c_type) - spacing = ' '*(len(field.c_end_name)+2) - _h('%sconst %s *S /**< */);', spacing, S_obj.c_type) - _c('%sconst %s *S /**< */)', spacing, S_obj.c_type) - else: - _h('%s (const %s *R /**< */);', field.c_end_name, c_type) - _c('%s (const %s *R /**< */)', field.c_end_name, c_type) - _c('{') - _c(' xcb_generic_iterator_t i;') - - param = 'R' if switch_obj is None else 'S' - if switch_obj is not None: - _c(' i.data = %s + %s;', fields[field.c_field_name][0], - _c_accessor_get_expr(field.type.expr, fields)) - elif field.prev_varsized_field == None: - _c(' i.data = ((%s *) (R + 1)) + (%s);', field.type.c_wiretype, - _c_accessor_get_expr(field.type.expr, fields)) - else: - _c(' xcb_generic_iterator_t child = %s;', - _c_iterator_get_end(field.prev_varsized_field, 'R')) - _c(' i.data = ((%s *) child.data) + (%s);', field.type.c_wiretype, - _c_accessor_get_expr(field.type.expr, fields)) - - _c(' i.rem = 0;') - _c(' i.index = (char *) i.data - (char *) %s;', param) - _c(' return i;') - _c('}') - - else: - _hc('') - _hc('') - _hc('/*****************************************************************************') - _hc(' **') - _hc(' ** %s %s', field.c_iterator_type, field.c_iterator_name) - _hc(' ** ') - _hc(' ** @param const %s *R', c_type) - _hc(' ** @returns %s', field.c_iterator_type) - _hc(' **') - _hc(' *****************************************************************************/') - _hc(' ') - - _hc('%s', field.c_iterator_type) - if switch_obj is not None: - _hc('%s (const %s *R /**< */,', field.c_iterator_name, R_obj.c_type) - spacing = ' '*(len(field.c_iterator_name)+2) - _h('%sconst %s *S /**< */);', spacing, S_obj.c_type) - _c('%sconst %s *S /**< */)', spacing, S_obj.c_type) - else: - _h('%s (const %s *R /**< */);', field.c_iterator_name, c_type) - _c('%s (const %s *R /**< */)', field.c_iterator_name, c_type) - _c('{') - _c(' %s i;', field.c_iterator_type) - - if switch_obj is not None: - _c(' i.data = %s;', fields[field.c_field_name][0]) - _c(' i.rem = %s;', _c_accessor_get_expr(field.type.expr, fields)) - elif field.prev_varsized_field == None: - _c(' i.data = (%s *) (R + 1);', field.c_field_type) - else: - _c(' xcb_generic_iterator_t prev = %s;', _c_iterator_get_end(field.prev_varsized_field, 'R')) - _c(' i.data = (%s *) ((char *) prev.data + XCB_TYPE_PAD(%s, prev.index));', - field.c_field_type, type_pad_type(field.c_field_type)) - if switch_obj is None: - _c(' i.rem = %s;', _c_accessor_get_expr(field.type.expr, fields)) - _c(' i.index = (char *) i.data - (char *) %s;', 'R' if switch_obj is None else 'S' ) - _c(' return i;') - _c('}') - -def _c_accessors(self, name, base): - ''' - Declares the accessor functions for the fields of a structure. - ''' - # no accessors for switch itself - - # switch always needs to be unpacked explicitly -# if self.is_switch: -# pass -# else: - if True: - for field in self.fields: - if field.type.is_list and not field.type.fixed_size(): - _c_accessors_list(self, field) - elif field.prev_varsized_field is not None or not field.type.fixed_size(): - _c_accessors_field(self, field) - -def c_simple(self, name): - ''' - Exported function that handles cardinal type declarations. - These are types which are typedef'd to one of the CARDx's, char, float, etc. - ''' - _c_type_setup(self, name, ()) - - if (self.name != name): - # Typedef - _h_setlevel(0) - my_name = _t(name) - _h('') - _h('typedef %s %s;', _t(self.name), my_name) - - # Iterator - _c_iterator(self, name) - -def _c_complex(self): - ''' - Helper function for handling all structure types. - Called for all structs, requests, replies, events, errors. - ''' - _h_setlevel(0) - _h('') - _h('/**') - _h(' * @brief %s', self.c_type) - _h(' **/') - _h('typedef %s %s {', self.c_container, self.c_type) - - struct_fields = [] - maxtypelen = 0 - - varfield = None - for field in self.fields: - if not field.type.fixed_size() and not self.is_switch and not self.is_union: - varfield = field.c_field_name - continue - if field.wire: - struct_fields.append(field) - - for field in struct_fields: - length = len(field.c_field_type) - # account for '*' pointer_spec - if not field.type.fixed_size(): - length += 1 - maxtypelen = max(maxtypelen, length) - - def _c_complex_field(self, field, space=''): - if (field.type.fixed_size() or - # in case of switch with switch children, don't make the field a pointer - # necessary for unserialize to work - (self.is_switch and field.type.is_switch)): - spacing = ' ' * (maxtypelen - len(field.c_field_type)) - _h('%s %s%s %s%s; /**< */', space, field.c_field_type, spacing, field.c_field_name, field.c_subscript) - else: - spacing = ' ' * (maxtypelen - (len(field.c_field_type) + 1)) - _h('%s %s%s *%s%s; /**< */', space, field.c_field_type, spacing, field.c_field_name, field.c_subscript) - - if not self.is_switch: - for field in struct_fields: - _c_complex_field(self, field) - else: - for b in self.bitcases: - space = '' - if b.type.has_name: - _h(' struct _%s {', b.c_field_name) - space = ' ' - for field in b.type.fields: - _c_complex_field(self, field, space) - if b.type.has_name: - _h(' } %s;', b.c_field_name) - - _h('} %s;', self.c_type) - -def c_struct(self, name): - ''' - Exported function that handles structure declarations. - ''' - _c_type_setup(self, name, ()) - _c_complex(self) - _c_accessors(self, name, name) - _c_iterator(self, name) - -def c_union(self, name): - ''' - Exported function that handles union declarations. - ''' - _c_type_setup(self, name, ()) - _c_complex(self) - _c_iterator(self, name) - -def _c_request_helper(self, name, cookie_type, void, regular, aux=False): - ''' - Declares a request function. - ''' - - # Four stunningly confusing possibilities here: - # - # Void Non-void - # ------------------------------ - # "req" "req" - # 0 flag CHECKED flag Normal Mode - # void_cookie req_cookie - # ------------------------------ - # "req_checked" "req_unchecked" - # CHECKED flag 0 flag Abnormal Mode - # void_cookie req_cookie - # ------------------------------ - - - # Whether we are _checked or _unchecked - checked = void and not regular - unchecked = not void and not regular - - # What kind of cookie we return - func_cookie = 'xcb_void_cookie_t' if void else self.c_cookie_type - - # What flag is passed to xcb_request - func_flags = '0' if (void and regular) or (not void and not regular) else 'XCB_REQUEST_CHECKED' - - # Global extension id variable or NULL for xproto - func_ext_global = '&' + _ns.c_ext_global_name if _ns.is_ext else '0' - - # What our function name is - func_name = self.c_request_name if not aux else self.c_aux_name - if checked: - func_name = self.c_checked_name if not aux else self.c_aux_checked_name - if unchecked: - func_name = self.c_unchecked_name if not aux else self.c_aux_unchecked_name - - param_fields = [] - wire_fields = [] - maxtypelen = len('xcb_connection_t') - serial_fields = [] - # special case: list with variable size elements - list_with_var_size_elems = False - - for field in self.fields: - if field.visible: - # The field should appear as a call parameter - param_fields.append(field) - if field.wire and not field.auto: - # We need to set the field up in the structure - wire_fields.append(field) - if field.type.need_serialize or field.type.need_sizeof: - serial_fields.append(field) - - for field in param_fields: - c_field_const_type = field.c_field_const_type - if field.type.need_serialize and not aux: - c_field_const_type = "const void" - if len(c_field_const_type) > maxtypelen: - maxtypelen = len(c_field_const_type) - if field.type.is_list and not field.type.member.fixed_size(): - list_with_var_size_elems = True - - _h_setlevel(1) - _c_setlevel(1) - _h('') - _h('/**') - _h(' * Delivers a request to the X server') - _h(' * @param c The connection') - _h(' * @return A cookie') - _h(' *') - _h(' * Delivers a request to the X server.') - _h(' * ') - if checked: - _h(' * This form can be used only if the request will not cause') - _h(' * a reply to be generated. Any returned error will be') - _h(' * saved for handling by xcb_request_check().') - if unchecked: - _h(' * This form can be used only if the request will cause') - _h(' * a reply to be generated. Any returned error will be') - _h(' * placed in the event queue.') - _h(' */') - _c('') - _hc('') - _hc('/*****************************************************************************') - _hc(' **') - _hc(' ** %s %s', cookie_type, func_name) - _hc(' ** ') - - spacing = ' ' * (maxtypelen - len('xcb_connection_t')) - _hc(' ** @param xcb_connection_t%s *c', spacing) - - for field in param_fields: - c_field_const_type = field.c_field_const_type - if field.type.need_serialize and not aux: - c_field_const_type = "const void" - spacing = ' ' * (maxtypelen - len(c_field_const_type)) - _hc(' ** @param %s%s %s%s', c_field_const_type, spacing, field.c_pointer, field.c_field_name) - - _hc(' ** @returns %s', cookie_type) - _hc(' **') - _hc(' *****************************************************************************/') - _hc(' ') - _hc('%s', cookie_type) - - spacing = ' ' * (maxtypelen - len('xcb_connection_t')) - comma = ',' if len(param_fields) else ');' - _h('%s (xcb_connection_t%s *c /**< */%s', func_name, spacing, comma) - comma = ',' if len(param_fields) else ')' - _c('%s (xcb_connection_t%s *c /**< */%s', func_name, spacing, comma) - - func_spacing = ' ' * (len(func_name) + 2) - count = len(param_fields) - for field in param_fields: - count = count - 1 - c_field_const_type = field.c_field_const_type - c_pointer = field.c_pointer - if field.type.need_serialize and not aux: - c_field_const_type = "const void" - c_pointer = '*' - spacing = ' ' * (maxtypelen - len(c_field_const_type)) - comma = ',' if count else ');' - _h('%s%s%s %s%s /**< */%s', func_spacing, c_field_const_type, - spacing, c_pointer, field.c_field_name, comma) - comma = ',' if count else ')' - _c('%s%s%s %s%s /**< */%s', func_spacing, c_field_const_type, - spacing, c_pointer, field.c_field_name, comma) - - count = 2 - if not self.var_followed_by_fixed_fields: - for field in param_fields: - if not field.type.fixed_size(): - count = count + 2 - if field.type.need_serialize: - # _serialize() keeps track of padding automatically - count -= 1 - dimension = count + 2 - - _c('{') - _c(' static const xcb_protocol_request_t xcb_req = {') - _c(' /* count */ %d,', count) - _c(' /* ext */ %s,', func_ext_global) - _c(' /* opcode */ %s,', self.c_request_name.upper()) - _c(' /* isvoid */ %d', 1 if void else 0) - _c(' };') - _c(' ') - - _c(' struct iovec xcb_parts[%d];', dimension) - _c(' %s xcb_ret;', func_cookie) - _c(' %s xcb_out;', self.c_type) - if self.var_followed_by_fixed_fields: - _c(' /* in the protocol description, variable size fields are followed by fixed size fields */') - _c(' void *xcb_aux = 0;') - - - for idx, f in enumerate(serial_fields): - if aux: - _c(' void *xcb_aux%d = 0;' % (idx)) - if list_with_var_size_elems: - _c(' unsigned int i;') - _c(' unsigned int xcb_tmp_len;') - _c(' char *xcb_tmp;') - _c(' ') - # simple request call tracing -# _c(' printf("in function %s\\n");' % func_name) - - # fixed size fields - for field in wire_fields: - if field.type.fixed_size(): - if field.type.is_expr: - _c(' xcb_out.%s = %s;', field.c_field_name, _c_accessor_get_expr(field.type.expr, None)) - elif field.type.is_pad: - if field.type.nmemb == 1: - _c(' xcb_out.%s = 0;', field.c_field_name) - else: - _c(' memset(xcb_out.%s, 0, %d);', field.c_field_name, field.type.nmemb) - else: - if field.type.nmemb == 1: - _c(' xcb_out.%s = %s;', field.c_field_name, field.c_field_name) - else: - _c(' memcpy(xcb_out.%s, %s, %d);', field.c_field_name, field.c_field_name, field.type.nmemb) - - def get_serialize_args(type_obj, c_field_name, aux_var, context='serialize'): - serialize_args = get_serialize_params(context, type_obj, - c_field_name, - aux_var)[2] - return reduce(lambda x,y: "%s, %s" % (x,y), [a[2] for a in serialize_args]) - - # calls in order to free dyn. all. memory - free_calls = [] - - _c(' ') - if not self.var_followed_by_fixed_fields: - _c(' xcb_parts[2].iov_base = (char *) &xcb_out;') - _c(' xcb_parts[2].iov_len = sizeof(xcb_out);') - _c(' xcb_parts[3].iov_base = 0;') - _c(' xcb_parts[3].iov_len = -xcb_parts[2].iov_len & 3;') - - count = 4 - - for field in param_fields: - if not field.type.fixed_size(): - _c(' /* %s %s */', field.type.c_type, field.c_field_name) - # default: simple cast to char * - if not field.type.need_serialize and not field.type.need_sizeof: - _c(' xcb_parts[%d].iov_base = (char *) %s;', count, field.c_field_name) - if field.type.is_list: - if field.type.member.fixed_size(): - _c(' xcb_parts[%d].iov_len = %s * sizeof(%s);', count, - _c_accessor_get_expr(field.type.expr, None), - field.type.member.c_wiretype) - else: - list_length = _c_accessor_get_expr(field.type.expr, None) - - length = '' - _c(" xcb_parts[%d].iov_len = 0;" % count) - _c(" xcb_tmp = (char *)%s;", field.c_field_name) - _c(" for(i=0; i<%s; i++) {" % list_length) - _c(" xcb_tmp_len = %s(xcb_tmp);" % - (field.type.c_sizeof_name)) - _c(" xcb_parts[%d].iov_len += xcb_tmp_len;" % count) - _c(" xcb_tmp += xcb_tmp_len;") - _c(" }") - else: - # not supposed to happen - raise Exception("unhandled variable size field %s" % field.c_field_name) - else: - if not aux: - _c(' xcb_parts[%d].iov_base = (char *) %s;', count, field.c_field_name) - idx = serial_fields.index(field) - aux_var = '&xcb_aux%d' % idx - context = 'serialize' if aux else 'sizeof' - _c(' xcb_parts[%d].iov_len = ', count) - if aux: - serialize_args = get_serialize_args(field.type, aux_var, field.c_field_name, context) - _c(' %s (%s);', field.type.c_serialize_name, serialize_args) - _c(' xcb_parts[%d].iov_base = xcb_aux%d;' % (count, idx)) - free_calls.append(' free(xcb_aux%d);' % idx) - else: - serialize_args = get_serialize_args(field.type, field.c_field_name, aux_var, context) - func_name = field.type.c_sizeof_name - _c(' %s (%s);', func_name, serialize_args) - - count += 1 - if not (field.type.need_serialize or field.type.need_sizeof): - # the _serialize() function keeps track of padding automatically - _c(' xcb_parts[%d].iov_base = 0;', count) - _c(' xcb_parts[%d].iov_len = -xcb_parts[%d].iov_len & 3;', count, count-1) - count += 1 - - # elif self.var_followed_by_fixed_fields: - else: - _c(' xcb_parts[2].iov_base = (char *) &xcb_out;') - # request header: opcodes + length - _c(' xcb_parts[2].iov_len = 2*sizeof(uint8_t) + sizeof(uint16_t);') - count += 1 - # call _serialize() - buffer_var = '&xcb_aux' - serialize_args = get_serialize_args(self, buffer_var, '&xcb_out', 'serialize') - _c(' xcb_parts[%d].iov_len = %s (%s);', count, self.c_serialize_name, serialize_args) - _c(' xcb_parts[%d].iov_base = (char *) xcb_aux;', count) - free_calls.append(' free(xcb_aux);') - # no padding necessary - _serialize() keeps track of padding automatically - - _c(' ') - _c(' xcb_ret.sequence = xcb_send_request(c, %s, xcb_parts + 2, &xcb_req);', func_flags) - - # free dyn. all. data, if any - for f in free_calls: - _c(f) - _c(' return xcb_ret;') - _c('}') - -def _c_reply(self, name): - ''' - Declares the function that returns the reply structure. - ''' - spacing1 = ' ' * (len(self.c_cookie_type) - len('xcb_connection_t')) - spacing2 = ' ' * (len(self.c_cookie_type) - len('xcb_generic_error_t')) - spacing3 = ' ' * (len(self.c_reply_name) + 2) - - # check if _unserialize() has to be called for any field - def look_for_special_cases(complex_obj): - unserialize_fields = [] - # no unserialize call in case of switch - if not complex_obj.is_switch: - for field in complex_obj.fields: - # three cases: 1. field with special case - # 2. container that contains special case field - # 3. list with special case elements - if field.type.var_followed_by_fixed_fields: - unserialize_fields.append(field) - elif field.type.is_container: - unserialize_fields += look_for_special_cases(field.type) - elif field.type.is_list: - if field.type.member.var_followed_by_fixed_fields: - unserialize_fields.append(field) - if field.type.member.is_container: - unserialize_fields += look_for_special_cases(field.type.member) - return unserialize_fields - - unserialize_fields = look_for_special_cases(self.reply) - - _h('') - _h('/**') - _h(' * Return the reply') - _h(' * @param c The connection') - _h(' * @param cookie The cookie') - _h(' * @param e The xcb_generic_error_t supplied') - _h(' *') - _h(' * Returns the reply of the request asked by') - _h(' * ') - _h(' * The parameter @p e supplied to this function must be NULL if') - _h(' * %s(). is used.', self.c_unchecked_name) - _h(' * Otherwise, it stores the error if any.') - _h(' *') - _h(' * The returned value must be freed by the caller using free().') - _h(' */') - _c('') - _hc('') - _hc('/*****************************************************************************') - _hc(' **') - _hc(' ** %s * %s', self.c_reply_type, self.c_reply_name) - _hc(' ** ') - _hc(' ** @param xcb_connection_t%s *c', spacing1) - _hc(' ** @param %s cookie', self.c_cookie_type) - _hc(' ** @param xcb_generic_error_t%s **e', spacing2) - _hc(' ** @returns %s *', self.c_reply_type) - _hc(' **') - _hc(' *****************************************************************************/') - _hc(' ') - _hc('%s *', self.c_reply_type) - _hc('%s (xcb_connection_t%s *c /**< */,', self.c_reply_name, spacing1) - _hc('%s%s cookie /**< */,', spacing3, self.c_cookie_type) - _h('%sxcb_generic_error_t%s **e /**< */);', spacing3, spacing2) - _c('%sxcb_generic_error_t%s **e /**< */)', spacing3, spacing2) - _c('{') - - if len(unserialize_fields)>0: - # certain variable size fields need to be unserialized explicitly - _c(' %s *reply = (%s *) xcb_wait_for_reply(c, cookie.sequence, e);', - self.c_reply_type, self.c_reply_type) - _c(' int i;') - for field in unserialize_fields: - if field.type.is_list: - _c(' %s %s_iter = %s(reply);', field.c_iterator_type, field.c_field_name, field.c_iterator_name) - _c(' int %s_len = %s(reply);', field.c_field_name, field.c_length_name) - _c(' %s *%s_data;', field.c_field_type, field.c_field_name) - else: - raise Exception('not implemented: call _unserialize() in reply for non-list type %s', field.c_field_type) - # call _unserialize(), using the reply as source and target buffer - _c(' /* special cases: transform parts of the reply to match XCB data structures */') - for field in unserialize_fields: - if field.type.is_list: - _c(' for(i=0; i<%s_len; i++) {', field.c_field_name) - _c(' %s_data = %s_iter.data;', field.c_field_name, field.c_field_name) - _c(' %s((const void *)%s_data, &%s_data);', field.type.c_unserialize_name, - field.c_field_name, field.c_field_name) - _c(' %s(&%s_iter);', field.type.c_next_name, field.c_field_name) - _c(' }') - # return the transformed reply - _c(' return reply;') - - else: - _c(' return (%s *) xcb_wait_for_reply(c, cookie.sequence, e);', self.c_reply_type) - - _c('}') - -def _c_opcode(name, opcode): - ''' - Declares the opcode define for requests, events, and errors. - ''' - _h_setlevel(0) - _h('') - _h('/** Opcode for %s. */', _n(name)) - _h('#define %s %s', _n(name).upper(), opcode) - -def _c_cookie(self, name): - ''' - Declares the cookie type for a non-void request. - ''' - _h_setlevel(0) - _h('') - _h('/**') - _h(' * @brief %s', self.c_cookie_type) - _h(' **/') - _h('typedef struct %s {', self.c_cookie_type) - _h(' unsigned int sequence; /**< */') - _h('} %s;', self.c_cookie_type) - -def c_request(self, name): - ''' - Exported function that handles request declarations. - ''' - _c_type_setup(self, name, ('request',)) - - if self.reply: - # Cookie type declaration - _c_cookie(self, name) - - # Opcode define - _c_opcode(name, self.opcode) - - # Request structure declaration - _c_complex(self) - - if self.reply: - _c_type_setup(self.reply, name, ('reply',)) - # Reply structure definition - _c_complex(self.reply) - # Request prototypes - _c_request_helper(self, name, self.c_cookie_type, False, True) - _c_request_helper(self, name, self.c_cookie_type, False, False) - if self.need_aux: - _c_request_helper(self, name, self.c_cookie_type, False, True, True) - _c_request_helper(self, name, self.c_cookie_type, False, False, True) - # Reply accessors - _c_accessors(self.reply, name + ('reply',), name) - _c_reply(self, name) - else: - # Request prototypes - _c_request_helper(self, name, 'xcb_void_cookie_t', True, False) - _c_request_helper(self, name, 'xcb_void_cookie_t', True, True) - if self.need_aux: - _c_request_helper(self, name, 'xcb_void_cookie_t', True, False, True) - _c_request_helper(self, name, 'xcb_void_cookie_t', True, True, True) - - -def c_event(self, name): - ''' - Exported function that handles event declarations. - ''' - _c_type_setup(self, name, ('event',)) - - # Opcode define - _c_opcode(name, self.opcodes[name]) - - if self.name == name: - # Structure definition - _c_complex(self) - else: - # Typedef - _h('') - _h('typedef %s %s;', _t(self.name + ('event',)), _t(name + ('event',))) - -def c_error(self, name): - ''' - Exported function that handles error declarations. - ''' - _c_type_setup(self, name, ('error',)) - - # Opcode define - _c_opcode(name, self.opcodes[name]) - - if self.name == name: - # Structure definition - _c_complex(self) - else: - # Typedef - _h('') - _h('typedef %s %s;', _t(self.name + ('error',)), _t(name + ('error',))) - - -# Main routine starts here - -# Must create an "output" dictionary before any xcbgen imports. -output = {'open' : c_open, - 'close' : c_close, - 'simple' : c_simple, - 'enum' : c_enum, - 'struct' : c_struct, - 'union' : c_union, - 'request' : c_request, - 'event' : c_event, - 'error' : c_error, - } - -# Boilerplate below this point - -# Check for the argument that specifies path to the xcbgen python package. -try: - opts, args = getopt.getopt(sys.argv[1:], 'p:') -except getopt.GetoptError as err: - print(err) - print('Usage: c_client.py [-p path] file.xml') - sys.exit(1) - -for (opt, arg) in opts: - if opt == '-p': - sys.path.append(arg) - -# Import the module class -try: - from xcbgen.state import Module -except ImportError: - print(''' -Failed to load the xcbgen Python package! -Make sure that xcb/proto installed it on your Python path. -If not, you will need to create a .pth file or define $PYTHONPATH -to extend the path. -Refer to the README file in xcb/proto for more info. -''') - raise - -# Parse the xml header -module = Module(args[0], output) - -# Build type-registry and resolve type dependencies -module.register() -module.resolve() - -# Output the code -module.generate() +#!/usr/bin/env python
+from xml.etree.cElementTree import *
+from os.path import basename
+from functools import reduce
+import getopt
+import sys
+import re
+
+# Jump to the bottom of this file for the main routine
+
+# Some hacks to make the API more readable, and to keep backwards compability
+_cname_re = re.compile('([A-Z0-9][a-z]+|[A-Z0-9]+(?![a-z])|[a-z]+)')
+_cname_special_cases = {'DECnet':'decnet'}
+
+_extension_special_cases = ['XPrint', 'XCMisc', 'BigRequests']
+
+_cplusplus_annoyances = {'class' : '_class',
+ 'new' : '_new',
+ 'delete': '_delete'}
+_c_keywords = {'default' : '_default'}
+
+_hlines = []
+_hlevel = 0
+_clines = []
+_clevel = 0
+_ns = None
+
+# global variable to keep track of serializers and
+# switch data types due to weird dependencies
+finished_serializers = []
+finished_sizeof = []
+finished_switch = []
+
+def _h(fmt, *args):
+ '''
+ Writes the given line to the header file.
+ '''
+ _hlines[_hlevel].append(fmt % args)
+
+def _c(fmt, *args):
+ '''
+ Writes the given line to the source file.
+ '''
+ _clines[_clevel].append(fmt % args)
+
+def _hc(fmt, *args):
+ '''
+ Writes the given line to both the header and source files.
+ '''
+ _h(fmt, *args)
+ _c(fmt, *args)
+
+# XXX See if this level thing is really necessary.
+def _h_setlevel(idx):
+ '''
+ Changes the array that header lines are written to.
+ Supports writing different sections of the header file.
+ '''
+ global _hlevel
+ while len(_hlines) <= idx:
+ _hlines.append([])
+ _hlevel = idx
+
+def _c_setlevel(idx):
+ '''
+ Changes the array that source lines are written to.
+ Supports writing to different sections of the source file.
+ '''
+ global _clevel
+ while len(_clines) <= idx:
+ _clines.append([])
+ _clevel = idx
+
+def _n_item(str):
+ '''
+ Does C-name conversion on a single string fragment.
+ Uses a regexp with some hard-coded special cases.
+ '''
+ if str in _cname_special_cases:
+ return _cname_special_cases[str]
+ else:
+ split = _cname_re.finditer(str)
+ name_parts = [match.group(0) for match in split]
+ return '_'.join(name_parts)
+
+def _cpp(str):
+ '''
+ Checks for certain C++ reserved words and fixes them.
+ '''
+ if str in _cplusplus_annoyances:
+ return _cplusplus_annoyances[str]
+ elif str in _c_keywords:
+ return _c_keywords[str]
+ else:
+ return str
+
+def _ext(str):
+ '''
+ Does C-name conversion on an extension name.
+ Has some additional special cases on top of _n_item.
+ '''
+ if str in _extension_special_cases:
+ return _n_item(str).lower()
+ else:
+ return str.lower()
+
+def _n(list):
+ '''
+ Does C-name conversion on a tuple of strings.
+ Different behavior depending on length of tuple, extension/not extension, etc.
+ Basically C-name converts the individual pieces, then joins with underscores.
+ '''
+ if len(list) == 1:
+ parts = list
+ elif len(list) == 2:
+ parts = [list[0], _n_item(list[1])]
+ elif _ns.is_ext:
+ parts = [list[0], _ext(list[1])] + [_n_item(i) for i in list[2:]]
+ else:
+ parts = [list[0]] + [_n_item(i) for i in list[1:]]
+ return '_'.join(parts).lower()
+
+def _t(list):
+ '''
+ Does C-name conversion on a tuple of strings representing a type.
+ Same as _n but adds a "_t" on the end.
+ '''
+ if len(list) == 1:
+ parts = list
+ elif len(list) == 2:
+ parts = [list[0], _n_item(list[1]), 't']
+ elif _ns.is_ext:
+ parts = [list[0], _ext(list[1])] + [_n_item(i) for i in list[2:]] + ['t']
+ else:
+ parts = [list[0]] + [_n_item(i) for i in list[1:]] + ['t']
+ return '_'.join(parts).lower()
+
+
+def c_open(self):
+ '''
+ Exported function that handles module open.
+ Opens the files and writes out the auto-generated comment, header file includes, etc.
+ '''
+ global _ns
+ _ns = self.namespace
+ _ns.c_ext_global_name = _n(_ns.prefix + ('id',))
+
+ # Build the type-name collision avoidance table used by c_enum
+ build_collision_table()
+
+ _h_setlevel(0)
+ _c_setlevel(0)
+
+ _hc('/*')
+ _hc(' * This file generated automatically from %s by c_client.py.', _ns.file)
+ _hc(' * Edit at your peril.')
+ _hc(' */')
+ _hc('')
+
+ _h('/**')
+ _h(' * @defgroup XCB_%s_API XCB %s API', _ns.ext_name, _ns.ext_name)
+ _h(' * @brief %s XCB Protocol Implementation.', _ns.ext_name)
+ _h(' * @{')
+ _h(' **/')
+ _h('')
+ _h('#ifndef __%s_H', _ns.header.upper())
+ _h('#define __%s_H', _ns.header.upper())
+ _h('')
+ _h('#include "xcb.h"')
+
+ _c('#include <stdlib.h>')
+ _c('#include <string.h>')
+ _c('#include <assert.h>')
+ _c('#include "xcbext.h"')
+ _c('#include "%s.h"', _ns.header)
+ _c('#include <X11/Xtrans/Xtrans.h>')
+
+ if _ns.is_ext:
+ for (n, h) in self.imports:
+ _hc('#include "%s.h"', h)
+
+ _h('')
+ _h('#ifdef __cplusplus')
+ _h('extern "C" {')
+ _h('#endif')
+
+ if _ns.is_ext:
+ _h('')
+ _h('#define XCB_%s_MAJOR_VERSION %s', _ns.ext_name.upper(), _ns.major_version)
+ _h('#define XCB_%s_MINOR_VERSION %s', _ns.ext_name.upper(), _ns.minor_version)
+ _h(' ') #XXX
+ _h('extern xcb_extension_t %s;', _ns.c_ext_global_name)
+
+ _c('')
+ _c('xcb_extension_t %s = { "%s", 0 };', _ns.c_ext_global_name, _ns.ext_xname)
+
+def c_close(self):
+ '''
+ Exported function that handles module close.
+ Writes out all the stored content lines, then closes the files.
+ '''
+ _h_setlevel(2)
+ _c_setlevel(2)
+ _hc('')
+
+ _h('')
+ _h('#ifdef __cplusplus')
+ _h('}')
+ _h('#endif')
+
+ _h('')
+ _h('#endif')
+ _h('')
+ _h('/**')
+ _h(' * @}')
+ _h(' */')
+
+ # Write header file
+ hfile = open('%s.h' % _ns.header, 'w')
+ for list in _hlines:
+ for line in list:
+ hfile.write(line)
+ hfile.write('\n')
+ hfile.close()
+
+ # Write source file
+ cfile = open('%s.c' % _ns.header, 'w')
+ for list in _clines:
+ for line in list:
+ cfile.write(line)
+ cfile.write('\n')
+ cfile.close()
+
+def build_collision_table():
+ global namecount
+ namecount = {}
+
+ for v in module.types.values():
+ name = _t(v[0])
+ namecount[name] = (namecount.get(name) or 0) + 1
+
+def c_enum(self, name):
+ '''
+ Exported function that handles enum declarations.
+ '''
+
+ tname = _t(name)
+ if namecount[tname] > 1:
+ tname = _t(name + ('enum',))
+
+ _h_setlevel(0)
+ _h('')
+ _h('typedef enum %s {', tname)
+
+ count = len(self.values)
+
+ for (enam, eval) in self.values:
+ count = count - 1
+ equals = ' = ' if eval != '' else ''
+ comma = ',' if count > 0 else ''
+ _h(' %s%s%s%s', _n(name + (enam,)).upper(), equals, eval, comma)
+
+ _h('} %s;', tname)
+
+def _c_type_setup(self, name, postfix):
+ '''
+ Sets up all the C-related state by adding additional data fields to
+ all Field and Type objects. Here is where we figure out most of our
+ variable and function names.
+
+ Recurses into child fields and list member types.
+ '''
+ # Do all the various names in advance
+ self.c_type = _t(name + postfix)
+ self.c_wiretype = 'char' if self.c_type == 'void' else self.c_type
+
+ self.c_iterator_type = _t(name + ('iterator',))
+ self.c_next_name = _n(name + ('next',))
+ self.c_end_name = _n(name + ('end',))
+
+ self.c_request_name = _n(name)
+ self.c_checked_name = _n(name + ('checked',))
+ self.c_unchecked_name = _n(name + ('unchecked',))
+ self.c_reply_name = _n(name + ('reply',))
+ self.c_reply_type = _t(name + ('reply',))
+ self.c_cookie_type = _t(name + ('cookie',))
+
+ self.need_aux = False
+ self.need_serialize = False
+ self.need_sizeof = False
+
+ self.c_aux_name = _n(name + ('aux',))
+ self.c_aux_checked_name = _n(name + ('aux', 'checked'))
+ self.c_aux_unchecked_name = _n(name + ('aux', 'unchecked'))
+ self.c_serialize_name = _n(name + ('serialize',))
+ self.c_unserialize_name = _n(name + ('unserialize',))
+ self.c_unpack_name = _n(name + ('unpack',))
+ self.c_sizeof_name = _n(name + ('sizeof',))
+
+ # special case: structs where variable size fields are followed by fixed size fields
+ self.var_followed_by_fixed_fields = False
+
+ if self.is_switch:
+ self.need_serialize = True
+ self.c_container = 'struct'
+ for bitcase in self.bitcases:
+ bitcase.c_field_name = _cpp(bitcase.field_name)
+ bitcase_name = bitcase.field_type if bitcase.type.has_name else name
+ _c_type_setup(bitcase.type, bitcase_name, ())
+
+ elif self.is_container:
+
+ self.c_container = 'union' if self.is_union else 'struct'
+ prev_varsized_field = None
+ prev_varsized_offset = 0
+ first_field_after_varsized = None
+
+ for field in self.fields:
+ _c_type_setup(field.type, field.field_type, ())
+ if field.type.is_list:
+ _c_type_setup(field.type.member, field.field_type, ())
+ if (field.type.nmemb is None):
+ self.need_sizeof = True
+
+ field.c_field_type = _t(field.field_type)
+ field.c_field_const_type = ('' if field.type.nmemb == 1 else 'const ') + field.c_field_type
+ field.c_field_name = _cpp(field.field_name)
+ field.c_subscript = '[%d]' % field.type.nmemb if (field.type.nmemb and field.type.nmemb > 1) else ''
+ field.c_pointer = ' ' if field.type.nmemb == 1 else '*'
+
+ # correct the c_pointer field for variable size non-list types
+ if not field.type.fixed_size() and field.c_pointer == ' ':
+ field.c_pointer = '*'
+ if field.type.is_list and not field.type.member.fixed_size():
+ field.c_pointer = '*'
+
+ if field.type.is_switch:
+ field.c_pointer = '*'
+ field.c_field_const_type = 'const ' + field.c_field_type
+ self.need_aux = True
+ elif not field.type.fixed_size() and not field.type.is_bitcase:
+ self.need_sizeof = True
+
+ field.c_iterator_type = _t(field.field_type + ('iterator',)) # xcb_fieldtype_iterator_t
+ field.c_iterator_name = _n(name + (field.field_name, 'iterator')) # xcb_container_field_iterator
+ field.c_accessor_name = _n(name + (field.field_name,)) # xcb_container_field
+ field.c_length_name = _n(name + (field.field_name, 'length')) # xcb_container_field_length
+ field.c_end_name = _n(name + (field.field_name, 'end')) # xcb_container_field_end
+
+ field.prev_varsized_field = prev_varsized_field
+ field.prev_varsized_offset = prev_varsized_offset
+
+ if prev_varsized_offset == 0:
+ first_field_after_varsized = field
+ field.first_field_after_varsized = first_field_after_varsized
+
+ if field.type.fixed_size():
+ prev_varsized_offset += field.type.size
+ # special case: intermixed fixed and variable size fields
+ if prev_varsized_field is not None and not field.type.is_pad and field.wire:
+ if not self.is_union:
+ self.need_serialize = True
+ self.var_followed_by_fixed_fields = True
+ else:
+ self.last_varsized_field = field
+ prev_varsized_field = field
+ prev_varsized_offset = 0
+
+ if self.var_followed_by_fixed_fields:
+ if field.type.fixed_size():
+ field.prev_varsized_field = None
+
+ if self.need_serialize:
+ # when _unserialize() is wanted, create _sizeof() as well for consistency reasons
+ self.need_sizeof = True
+
+ # as switch does never appear at toplevel,
+ # continue here with type construction
+ if self.is_switch:
+ if self.c_type not in finished_switch:
+ finished_switch.append(self.c_type)
+ # special: switch C structs get pointer fields for variable-sized members
+ _c_complex(self)
+ for bitcase in self.bitcases:
+ bitcase_name = bitcase.type.name if bitcase.type.has_name else name
+ _c_accessors(bitcase.type, bitcase_name, bitcase_name)
+ # no list with switch as element, so no call to
+ # _c_iterator(field.type, field_name) necessary
+
+ if not self.is_bitcase:
+ if self.need_serialize:
+ if self.c_serialize_name not in finished_serializers:
+ finished_serializers.append(self.c_serialize_name)
+ _c_serialize('serialize', self)
+
+ # _unpack() and _unserialize() are only needed for special cases:
+ # switch -> unpack
+ # special cases -> unserialize
+ if self.is_switch or self.var_followed_by_fixed_fields:
+ _c_serialize('unserialize', self)
+
+ if self.need_sizeof:
+ if self.c_sizeof_name not in finished_sizeof:
+ if not module.namespace.is_ext or self.name[:2] == module.namespace.prefix:
+ finished_sizeof.append(self.c_sizeof_name)
+ _c_serialize('sizeof', self)
+# _c_type_setup()
+
+def _c_helper_absolute_name(prefix, field=None):
+ """
+ turn prefix, which is a list of tuples (name, separator, Type obj) into a string
+ representing a valid name in C (based on the context)
+ if field is not None, append the field name as well
+ """
+ prefix_str = ''
+ for name, sep, obj in prefix:
+ prefix_str += name
+ if '' == sep:
+ sep = '->'
+ if ((obj.is_bitcase and obj.has_name) or # named bitcase
+ (obj.is_switch and len(obj.parents)>1)):
+ sep = '.'
+ prefix_str += sep
+ if field is not None:
+ prefix_str += _cpp(field.field_name)
+ return prefix_str
+# _c_absolute_name
+
+def _c_helper_field_mapping(complex_type, prefix, flat=False):
+ """
+ generate absolute names, based on prefix, for all fields starting from complex_type
+ if flat == True, nested complex types are not taken into account
+ """
+ all_fields = {}
+ if complex_type.is_switch:
+ for b in complex_type.bitcases:
+ if b.type.has_name:
+ switch_name, switch_sep, switch_type = prefix[-1]
+ bitcase_prefix = prefix + [(b.type.name[-1], '.', b.type)]
+ else:
+ bitcase_prefix = prefix
+
+ if (True==flat and not b.type.has_name) or False==flat:
+ all_fields.update(_c_helper_field_mapping(b.type, bitcase_prefix, flat))
+ else:
+ for f in complex_type.fields:
+ fname = _c_helper_absolute_name(prefix, f)
+ if f.field_name in all_fields:
+ raise Exception("field name %s has been registered before" % f.field_name)
+
+ all_fields[f.field_name] = (fname, f)
+ if f.type.is_container and flat==False:
+ if f.type.is_bitcase and not f.type.has_name:
+ new_prefix = prefix
+ elif f.type.is_switch and len(f.type.parents)>1:
+ # nested switch gets another separator
+ new_prefix = prefix+[(f.c_field_name, '.', f.type)]
+ else:
+ new_prefix = prefix+[(f.c_field_name, '->', f.type)]
+ all_fields.update(_c_helper_field_mapping(f.type, new_prefix, flat))
+
+ return all_fields
+# _c_field_mapping()
+
+def _c_helper_resolve_field_names (prefix):
+ """
+ get field names for all objects in the prefix array
+ """
+ all_fields = {}
+ tmp_prefix = []
+ # look for fields in the remaining containers
+ for idx, p in enumerate(prefix):
+ name, sep, obj = p
+ if ''==sep:
+ # sep can be preset in prefix, if not, make a sensible guess
+ sep = '.' if (obj.is_switch or obj.is_bitcase) else '->'
+ # exception: 'toplevel' object (switch as well!) always have sep '->'
+ sep = '->' if idx<1 else sep
+ if not obj.is_bitcase or (obj.is_bitcase and obj.has_name):
+ tmp_prefix.append((name, sep, obj))
+ all_fields.update(_c_helper_field_mapping(obj, tmp_prefix, flat=True))
+
+ return all_fields
+# _c_helper_resolve_field_names
+
+def get_expr_fields(self):
+ """
+ get the Fields referenced by switch or list expression
+ """
+ def get_expr_field_names(expr):
+ if expr.op is None:
+ if expr.lenfield_name is not None:
+ return [expr.lenfield_name]
+ else:
+ # constant value expr
+ return []
+ else:
+ if expr.op == '~':
+ return get_expr_field_names(expr.rhs)
+ elif expr.op == 'popcount':
+ return get_expr_field_names(expr.rhs)
+ elif expr.op == 'sumof':
+ # sumof expr references another list,
+ # we need that list's length field here
+ field = None
+ for f in expr.lenfield_parent.fields:
+ if f.field_name == expr.lenfield_name:
+ field = f
+ break
+ if field is None:
+ raise Exception("list field '%s' referenced by sumof not found" % expr.lenfield_name)
+ # referenced list + its length field
+ return [expr.lenfield_name] + get_expr_field_names(field.type.expr)
+ elif expr.op == 'enumref':
+ return []
+ else:
+ return get_expr_field_names(expr.lhs) + get_expr_field_names(expr.rhs)
+ # get_expr_field_names()
+
+ # resolve the field names with the parent structure(s)
+ unresolved_fields_names = get_expr_field_names(self.expr)
+
+ # construct prefix from self
+ prefix = [('', '', p) for p in self.parents]
+ if self.is_container:
+ prefix.append(('', '', self))
+
+ all_fields = _c_helper_resolve_field_names (prefix)
+ resolved_fields_names = list(filter(lambda x: x in all_fields.keys(), unresolved_fields_names))
+ if len(unresolved_fields_names) != len(resolved_fields_names):
+ raise Exception("could not resolve all fields for %s" % self.name)
+
+ resolved_fields = [all_fields[n][1] for n in resolved_fields_names]
+ return resolved_fields
+# get_expr_fields()
+
+def resolve_expr_fields(complex_obj):
+ """
+ find expr fields appearing in complex_obj and descendents that cannot be resolved within complex_obj
+ these are normally fields that need to be given as function parameters
+ """
+ all_fields = []
+ expr_fields = []
+ unresolved = []
+
+ for field in complex_obj.fields:
+ all_fields.append(field)
+ if field.type.is_switch or field.type.is_list:
+ expr_fields += get_expr_fields(field.type)
+ if field.type.is_container:
+ expr_fields += resolve_expr_fields(field.type)
+
+ # try to resolve expr fields
+ for e in expr_fields:
+ if e not in all_fields and e not in unresolved:
+ unresolved.append(e)
+ return unresolved
+# resolve_expr_fields()
+
+def get_serialize_params(context, self, buffer_var='_buffer', aux_var='_aux'):
+ """
+ functions like _serialize(), _unserialize(), and _unpack() sometimes need additional parameters:
+ E.g. in order to unpack switch, extra parameters might be needed to evaluate the switch
+ expression. This function tries to resolve all fields within a structure, and returns the
+ unresolved fields as the list of external parameters.
+ """
+ def add_param(params, param):
+ if param not in params:
+ params.append(param)
+
+ # collect all fields into param_fields
+ param_fields = []
+ wire_fields = []
+
+ for field in self.fields:
+ if field.visible:
+ # the field should appear as a parameter in the function call
+ param_fields.append(field)
+ if field.wire and not field.auto:
+ if field.type.fixed_size() and not self.is_switch:
+ # field in the xcb_out structure
+ wire_fields.append(field)
+ # fields like 'pad0' are skipped!
+
+ # in case of switch, parameters always contain any fields referenced in the switch expr
+ # we do not need any variable size fields here, as the switch data type contains both
+ # fixed and variable size fields
+ if self.is_switch:
+ param_fields = get_expr_fields(self)
+
+ # _serialize()/_unserialize()/_unpack() function parameters
+ # note: don't use set() for params, it is unsorted
+ params = []
+
+ # 1. the parameter for the void * buffer
+ if 'serialize' == context:
+ params.append(('void', '**', buffer_var))
+ elif context in ('unserialize', 'unpack', 'sizeof'):
+ params.append(('const void', '*', buffer_var))
+
+ # 2. any expr fields that cannot be resolved within self and descendants
+ unresolved_fields = resolve_expr_fields(self)
+ for f in unresolved_fields:
+ add_param(params, (f.c_field_type, '', f.c_field_name))
+
+ # 3. param_fields contain the fields necessary to evaluate the switch expr or any other fields
+ # that do not appear in the data type struct
+ for p in param_fields:
+ if self.is_switch:
+ typespec = p.c_field_const_type
+ pointerspec = p.c_pointer
+ add_param(params, (typespec, pointerspec, p.c_field_name))
+ else:
+ if p.visible and not p.wire and not p.auto:
+ typespec = p.c_field_type
+ pointerspec = ''
+ add_param(params, (typespec, pointerspec, p.c_field_name))
+
+ # 4. aux argument
+ if 'serialize' == context:
+ add_param(params, ('const %s' % self.c_type, '*', aux_var))
+ elif 'unserialize' == context:
+ add_param(params, ('%s' % self.c_type, '**', aux_var))
+ elif 'unpack' == context:
+ add_param(params, ('%s' % self.c_type, '*', aux_var))
+
+ # 5. switch contains all variable size fields as struct members
+ # for other data types though, these have to be supplied separately
+ # this is important for the special case of intermixed fixed and
+ # variable size fields
+ if not self.is_switch and 'serialize' == context:
+ for p in param_fields:
+ if not p.type.fixed_size():
+ add_param(params, (p.c_field_const_type, '*', p.c_field_name))
+
+ return (param_fields, wire_fields, params)
+# get_serialize_params()
+
+def _c_serialize_helper_insert_padding(context, code_lines, space, postpone):
+ code_lines.append('%s /* insert padding */' % space)
+ code_lines.append('%s xcb_pad = -xcb_block_len & 3;' % space)
+# code_lines.append('%s printf("automatically inserting padding: %%%%d\\n", xcb_pad);' % space)
+ code_lines.append('%s xcb_buffer_len += xcb_block_len + xcb_pad;' % space)
+
+ if not postpone:
+ code_lines.append('%s if (0 != xcb_pad) {' % space)
+
+ if 'serialize' == context:
+ code_lines.append('%s xcb_parts[xcb_parts_idx].iov_base = xcb_pad0;' % space)
+ code_lines.append('%s xcb_parts[xcb_parts_idx].iov_len = xcb_pad;' % space)
+ code_lines.append('%s xcb_parts_idx++;' % space)
+ elif context in ('unserialize', 'unpack', 'sizeof'):
+ code_lines.append('%s xcb_tmp += xcb_pad;' % space)
+
+ code_lines.append('%s xcb_pad = 0;' % space)
+ code_lines.append('%s }' % space)
+
+ code_lines.append('%s xcb_block_len = 0;' % space)
+
+ # keep tracking of xcb_parts entries for serialize
+ return 1
+# _c_serialize_helper_insert_padding()
+
+def _c_serialize_helper_switch(context, self, complex_name,
+ code_lines, temp_vars,
+ space, prefix):
+ count = 0
+ switch_expr = _c_accessor_get_expr(self.expr, None)
+
+ for b in self.bitcases:
+ bitcase_expr = _c_accessor_get_expr(b.type.expr, None)
+ code_lines.append(' if(%s & %s) {' % (switch_expr, bitcase_expr))
+# code_lines.append(' printf("switch %s: entering bitcase section %s (mask=%%%%d)...\\n", %s);' %
+# (self.name[-1], b.type.name[-1], bitcase_expr))
+ b_prefix = prefix
+ if b.type.has_name:
+ b_prefix = prefix + [(b.c_field_name, '.', b.type)]
+
+ count += _c_serialize_helper_fields(context, b.type,
+ code_lines, temp_vars,
+ "%s " % space,
+ b_prefix,
+ is_bitcase = True)
+ code_lines.append(' }')
+
+# if 'serialize' == context:
+# count += _c_serialize_helper_insert_padding(context, code_lines, space, False)
+# elif context in ('unserialize', 'unpack', 'sizeof'):
+# # padding
+# code_lines.append('%s xcb_pad = -xcb_block_len & 3;' % space)
+# code_lines.append('%s xcb_buffer_len += xcb_block_len + xcb_pad;' % space)
+
+ return count
+# _c_serialize_helper_switch
+
+def _c_serialize_helper_switch_field(context, self, field, c_switch_variable, prefix):
+ """
+ handle switch by calling _serialize() or _unpack(), depending on context
+ """
+ # switch is handled by this function as a special case
+ param_fields, wire_fields, params = get_serialize_params(context, self)
+ field_mapping = _c_helper_field_mapping(self, prefix)
+ prefix_str = _c_helper_absolute_name(prefix)
+
+ # find the parameters that need to be passed to _serialize()/_unpack():
+ # all switch expr fields must be given as parameters
+ args = get_expr_fields(field.type)
+ # length fields for variable size types in switch, normally only some of need
+ # need to be passed as parameters
+ switch_len_fields = resolve_expr_fields(field.type)
+
+ # a switch field at this point _must_ be a bitcase field
+ # we require that bitcases are "self-contiguous"
+ bitcase_unresolved = resolve_expr_fields(self)
+ if len(bitcase_unresolved) != 0:
+ raise Exception('unresolved fields within bitcase is not supported at this point')
+
+ # get the C names for the parameters
+ c_field_names = ''
+ for a in switch_len_fields:
+ c_field_names += "%s, " % field_mapping[a.c_field_name][0]
+ for a in args:
+ c_field_names += "%s, " % field_mapping[a.c_field_name][0]
+
+ # call _serialize()/_unpack() to determine the actual size
+ if 'serialize' == context:
+ length = "%s(&%s, %s&%s%s)" % (field.type.c_serialize_name, c_switch_variable,
+ c_field_names, prefix_str, field.c_field_name)
+ elif context in ('unserialize', 'unpack'):
+ length = "%s(xcb_tmp, %s&%s%s)" % (field.type.c_unpack_name,
+ c_field_names, prefix_str, field.c_field_name)
+
+ return length
+# _c_serialize_helper_switch_field()
+
+def _c_serialize_helper_list_field(context, self, field,
+ code_lines, temp_vars,
+ space, prefix):
+ """
+ helper function to cope with lists of variable length
+ """
+ expr = field.type.expr
+ prefix_str = _c_helper_absolute_name(prefix)
+ param_fields, wire_fields, params = get_serialize_params('sizeof', self)
+ param_names = [p[2] for p in params]
+
+ expr_fields_names = [f.field_name for f in get_expr_fields(field.type)]
+ resolved = list(filter(lambda x: x in param_names, expr_fields_names))
+ unresolved = list(filter(lambda x: x not in param_names, expr_fields_names))
+
+ field_mapping = {}
+ for r in resolved:
+ field_mapping[r] = (r, None)
+
+ if len(unresolved)>0:
+ tmp_prefix = prefix
+ if len(tmp_prefix)==0:
+ raise Exception("found an empty prefix while resolving expr field names for list %s",
+ field.c_field_name)
+
+ field_mapping.update(_c_helper_resolve_field_names(prefix))
+ resolved += list(filter(lambda x: x in field_mapping, unresolved))
+ unresolved = list(filter(lambda x: x not in field_mapping, unresolved))
+ if len(unresolved)>0:
+ raise Exception('could not resolve the length fields required for list %s' % field.c_field_name)
+
+ list_length = _c_accessor_get_expr(expr, field_mapping)
+
+ # default: list with fixed size elements
+ length = '%s * sizeof(%s)' % (list_length, field.type.member.c_wiretype)
+
+ # list with variable-sized elements
+ if not field.type.member.fixed_size():
+ length = ''
+ if context in ('unserialize', 'sizeof', 'unpack'):
+ int_i = ' unsigned int i;'
+ xcb_tmp_len = ' unsigned int xcb_tmp_len;'
+ if int_i not in temp_vars:
+ temp_vars.append(int_i)
+ if xcb_tmp_len not in temp_vars:
+ temp_vars.append(xcb_tmp_len)
+ # loop over all list elements and call sizeof repeatedly
+ # this should be a bit faster than using the iterators
+ code_lines.append("%s for(i=0; i<%s; i++) {" % (space, list_length))
+ code_lines.append("%s xcb_tmp_len = %s(xcb_tmp);" %
+ (space, field.type.c_sizeof_name))
+ code_lines.append("%s xcb_block_len += xcb_tmp_len;" % space)
+ code_lines.append("%s xcb_tmp += xcb_tmp_len;" % space)
+ code_lines.append("%s }" % space)
+
+ elif 'serialize' == context:
+ code_lines.append('%s xcb_parts[xcb_parts_idx].iov_len = 0;' % space)
+ code_lines.append('%s xcb_tmp = (char *) %s%s;' % (space, prefix_str, field.c_field_name))
+ code_lines.append('%s for(i=0; i<%s; i++) { ' % (space, list_length))
+ code_lines.append('%s xcb_block_len = %s(xcb_tmp);' % (space, field.type.c_sizeof_name))
+ code_lines.append('%s xcb_parts[xcb_parts_idx].iov_len += xcb_block_len;' % space)
+ code_lines.append('%s }' % space)
+ code_lines.append('%s xcb_block_len = xcb_parts[xcb_parts_idx].iov_len;' % space)
+
+ return length
+# _c_serialize_helper_list_field()
+
+def _c_serialize_helper_fields_fixed_size(context, self, field,
+ code_lines, temp_vars,
+ space, prefix):
+ # keep the C code a bit more readable by giving the field name
+ if not self.is_bitcase:
+ code_lines.append('%s /* %s.%s */' % (space, self.c_type, field.c_field_name))
+ else:
+ scoped_name = [p[2].c_type if idx==0 else p[0] for idx, p in enumerate(prefix)]
+ typename = reduce(lambda x,y: "%s.%s" % (x, y), scoped_name)
+ code_lines.append('%s /* %s.%s */' % (space, typename, field.c_field_name))
+
+ abs_field_name = _c_helper_absolute_name(prefix, field)
+ # default for simple cases: call sizeof()
+ length = "sizeof(%s)" % field.c_field_type
+
+ if context in ('unserialize', 'unpack', 'sizeof'):
+ # default: simple cast
+ value = ' %s = *(%s *)xcb_tmp;' % (abs_field_name, field.c_field_type)
+
+ # padding - we could probably just ignore it
+ if field.type.is_pad and field.type.nmemb > 1:
+ value = ''
+ for i in range(field.type.nmemb):
+ code_lines.append('%s %s[%d] = *(%s *)xcb_tmp;' %
+ (space, abs_field_name, i, field.c_field_type))
+ # total padding = sizeof(pad0) * nmemb
+ length += " * %d" % field.type.nmemb
+
+ if field.type.is_list:
+ # no such case in the protocol, cannot be tested and therefore ignored for now
+ raise Exception('list with fixed number of elemens unhandled in _unserialize()')
+
+ elif 'serialize' == context:
+ value = ' xcb_parts[xcb_parts_idx].iov_base = (char *) '
+
+ if field.type.is_expr:
+ # need to register a temporary variable for the expression in case we know its type
+ if field.type.c_type is None:
+ raise Exception("type for field '%s' (expression '%s') unkown" %
+ (field.field_name, _c_accessor_get_expr(field.type.expr)))
+
+ temp_vars.append(' %s xcb_expr_%s = %s;' % (field.type.c_type, _cpp(field.field_name),
+ _c_accessor_get_expr(field.type.expr, prefix)))
+ value += "&xcb_expr_%s;" % _cpp(field.field_name)
+
+ elif field.type.is_pad:
+ if field.type.nmemb == 1:
+ value += "&xcb_pad;"
+ else:
+ # we could also set it to 0, see definition of xcb_send_request()
+ value = ' xcb_parts[xcb_parts_idx].iov_base = xcb_pad0;'
+ length += "*%d" % field.type.nmemb
+
+ else:
+ # non-list type with fixed size
+ if field.type.nmemb == 1:
+ value += "&%s;" % (abs_field_name)
+
+ # list with nmemb (fixed size) elements
+ else:
+ value += '%s;' % (abs_field_name)
+ length = '%d' % field.type.nmemb
+
+ return (value, length)
+# _c_serialize_helper_fields_fixed_size()
+
+def _c_serialize_helper_fields_variable_size(context, self, field,
+ code_lines, temp_vars,
+ space, prefix):
+ prefix_str = _c_helper_absolute_name(prefix)
+
+ if context in ('unserialize', 'unpack', 'sizeof'):
+ value = ''
+ var_field_name = 'xcb_tmp'
+
+ # special case: intermixed fixed and variable size fields
+ if self.var_followed_by_fixed_fields and 'unserialize' == context:
+ value = ' %s = (%s *)xcb_tmp;' % (field.c_field_name, field.c_field_type)
+ temp_vars.append(' %s *%s;' % (field.type.c_type, field.c_field_name))
+ # special case: switch
+ if 'unpack' == context:
+ value = ' %s%s = (%s *)xcb_tmp;' % (prefix_str, field.c_field_name, field.c_field_type)
+
+ elif 'serialize' == context:
+ # variable size fields appear as parameters to _serialize() if the
+ # 'toplevel' container is not a switch
+ prefix_string = prefix_str if prefix[0][2].is_switch else ''
+ var_field_name = "%s%s" % (prefix_string, field.c_field_name)
+ value = ' xcb_parts[xcb_parts_idx].iov_base = (char *) %s;' % var_field_name
+
+ length = ''
+
+ code_lines.append('%s /* %s */' % (space, field.c_field_name))
+
+ if field.type.is_list:
+ if value != '':
+ # in any context, list is already a pointer, so the default assignment is ok
+ code_lines.append("%s%s" % (space, value))
+ value = ''
+ length = _c_serialize_helper_list_field(context, self, field,
+ code_lines, temp_vars,
+ space, prefix)
+
+ elif field.type.is_switch:
+ value = ''
+ if context == 'serialize':
+ # the _serialize() function allocates the correct amount memory if given a NULL pointer
+ value = ' xcb_parts[xcb_parts_idx].iov_base = (char *)0;'
+ length = _c_serialize_helper_switch_field(context, self, field,
+ 'xcb_parts[xcb_parts_idx].iov_base',
+ prefix)
+
+ else:
+ # in all remaining special cases - call _sizeof()
+ length = "%s(%s)" % (field.type.c_sizeof_name, var_field_name)
+
+ return (value, length)
+# _c_serialize_helper_fields_variable_size
+
+def _c_serialize_helper_fields(context, self,
+ code_lines, temp_vars,
+ space, prefix, is_bitcase):
+ count = 0
+ need_padding = False
+ prev_field_was_variable = False
+
+ for field in self.fields:
+ if not field.visible:
+ if not ((field.wire and not field.auto) or 'unserialize' == context):
+ continue
+
+ # switch/bitcase: fixed size fields must be considered explicitly
+ if field.type.fixed_size():
+ if self.is_bitcase or self.var_followed_by_fixed_fields:
+ if prev_field_was_variable and need_padding:
+ # insert padding
+# count += _c_serialize_helper_insert_padding(context, code_lines, space,
+# self.var_followed_by_fixed_fields)
+ prev_field_was_variable = False
+
+ # prefix for fixed size fields
+ fixed_prefix = prefix
+
+ value, length = _c_serialize_helper_fields_fixed_size(context, self, field,
+ code_lines, temp_vars,
+ space, fixed_prefix)
+ else:
+ continue
+
+ # fields with variable size
+ else:
+ # switch/bitcase: always calculate padding before and after variable sized fields
+ if need_padding or is_bitcase:
+ count += _c_serialize_helper_insert_padding(context, code_lines, space,
+ self.var_followed_by_fixed_fields)
+
+ value, length = _c_serialize_helper_fields_variable_size(context, self, field,
+ code_lines, temp_vars,
+ space, prefix)
+ prev_field_was_variable = True
+
+ # save (un)serialization C code
+ if '' != value:
+ code_lines.append('%s%s' % (space, value))
+
+ if field.type.fixed_size():
+ if is_bitcase or self.var_followed_by_fixed_fields:
+ # keep track of (un)serialized object's size
+ code_lines.append('%s xcb_block_len += %s;' % (space, length))
+ if context in ('unserialize', 'unpack', 'sizeof'):
+ code_lines.append('%s xcb_tmp += %s;' % (space, length))
+ else:
+ # variable size objects or bitcase:
+ # value & length might have been inserted earlier for special cases
+ if '' != length:
+ # special case: intermixed fixed and variable size fields
+ if (not field.type.fixed_size() and
+ self.var_followed_by_fixed_fields and 'unserialize' == context):
+ temp_vars.append(' int %s_len;' % field.c_field_name)
+ code_lines.append('%s %s_len = %s;' % (space, field.c_field_name, length))
+ code_lines.append('%s xcb_block_len += %s_len;' % (space, field.c_field_name))
+ code_lines.append('%s xcb_tmp += %s_len;' % (space, field.c_field_name))
+ else:
+ code_lines.append('%s xcb_block_len += %s;' % (space, length))
+ # increase pointer into the byte stream accordingly
+ if context in ('unserialize', 'sizeof', 'unpack'):
+ code_lines.append('%s xcb_tmp += xcb_block_len;' % space)
+
+ if 'serialize' == context:
+ if '' != length:
+ code_lines.append('%s xcb_parts[xcb_parts_idx].iov_len = %s;' % (space, length))
+ code_lines.append('%s xcb_parts_idx++;' % space)
+ count += 1
+
+ need_padding = True
+ if self.var_followed_by_fixed_fields:
+ need_padding = False
+
+ return count
+# _c_serialize_helper_fields()
+
+def _c_serialize_helper(context, complex_type,
+ code_lines, temp_vars,
+ space='', prefix=[]):
+ # count tracks the number of fields to serialize
+ count = 0
+
+ if hasattr(complex_type, 'type'):
+ self = complex_type.type
+ complex_name = complex_type.name
+ else:
+ self = complex_type
+ if self.var_followed_by_fixed_fields and 'unserialize' == context:
+ complex_name = 'xcb_out'
+ else:
+ complex_name = '_aux'
+
+ # special case: switch is serialized by evaluating each bitcase separately
+ if self.is_switch:
+ count += _c_serialize_helper_switch(context, self, complex_name,
+ code_lines, temp_vars,
+ space, prefix)
+
+ # all other data types can be evaluated one field a time
+ else:
+ # unserialize & fixed size fields: simply cast the buffer to the respective xcb_out type
+ if context in ('unserialize', 'unpack', 'sizeof') and not self.var_followed_by_fixed_fields:
+ code_lines.append('%s xcb_block_len += sizeof(%s);' % (space, self.c_type))
+ code_lines.append('%s xcb_tmp += xcb_block_len;' % space)
+ # probably not needed
+ #_c_serialize_helper_insert_padding(context, code_lines, space, False)
+
+ count += _c_serialize_helper_fields(context, self,
+ code_lines, temp_vars,
+ space, prefix, False)
+ # "final padding"
+ count += _c_serialize_helper_insert_padding(context, code_lines, space, False)
+
+ return count
+# _c_serialize_helper()
+
+def _c_serialize(context, self):
+ """
+ depending on the context variable, generate _serialize(), _unserialize(), _unpack(), or _sizeof()
+ for the ComplexType variable self
+ """
+ _h_setlevel(1)
+ _c_setlevel(1)
+
+ _hc('')
+ # _serialize() returns the buffer size
+ _hc('int')
+
+ if self.is_switch and 'unserialize' == context:
+ context = 'unpack'
+
+ cases = { 'serialize' : self.c_serialize_name,
+ 'unserialize' : self.c_unserialize_name,
+ 'unpack' : self.c_unpack_name,
+ 'sizeof' : self.c_sizeof_name }
+ func_name = cases[context]
+
+ param_fields, wire_fields, params = get_serialize_params(context, self)
+ variable_size_fields = 0
+ # maximum space required for type definition of function arguments
+ maxtypelen = 0
+
+ # determine N(variable_fields)
+ for field in param_fields:
+ # if self.is_switch, treat all fields as if they are variable sized
+ if not field.type.fixed_size() or self.is_switch:
+ variable_size_fields += 1
+ # determine maxtypelen
+ for p in params:
+ maxtypelen = max(maxtypelen, len(p[0]) + len(p[1]))
+
+ # write to .c/.h
+ indent = ' '*(len(func_name)+2)
+ param_str = []
+ for p in params:
+ typespec, pointerspec, field_name = p
+ spacing = ' '*(maxtypelen-len(typespec)-len(pointerspec))
+ param_str.append("%s%s%s %s%s /**< */" % (indent, typespec, spacing, pointerspec, field_name))
+ # insert function name
+ param_str[0] = "%s (%s" % (func_name, param_str[0].strip())
+ param_str = list(map(lambda x: "%s," % x, param_str))
+ for s in param_str[:-1]:
+ _hc(s)
+ _h("%s);" % param_str[-1].rstrip(','))
+ _c("%s)" % param_str[-1].rstrip(','))
+ _c('{')
+
+ code_lines = []
+ temp_vars = []
+ prefix = []
+
+ if 'serialize' == context:
+ if not self.is_switch and not self.var_followed_by_fixed_fields:
+ _c(' %s *xcb_out = *_buffer;', self.c_type)
+ _c(' unsigned int xcb_out_pad = -sizeof(%s) & 3;', self.c_type)
+ _c(' unsigned int xcb_buffer_len = sizeof(%s) + xcb_out_pad;', self.c_type)
+ else:
+ _c(' char *xcb_out = *_buffer;')
+ _c(' unsigned int xcb_buffer_len = 0;')
+ prefix = [('_aux', '->', self)]
+ aux_ptr = 'xcb_out'
+
+ elif context in ('unserialize', 'unpack'):
+ _c(' char *xcb_tmp = (char *)_buffer;')
+ if not self.is_switch:
+ if not self.var_followed_by_fixed_fields:
+ _c(' const %s *_aux = (%s *)_buffer;', self.c_type, self.c_type)
+ prefix = [('_aux', '->', self)]
+ else:
+ _c(' %s xcb_out;', self.c_type)
+ prefix = [('xcb_out', '.', self)]
+ else:
+ aux_var = '_aux' # default for unpack: single pointer
+ # note: unserialize not generated for switch
+ if 'unserialize' == context:
+ aux_var = '(*_aux)' # unserialize: double pointer (!)
+ prefix = [(aux_var, '->', self)]
+ aux_ptr = '*_aux'
+ _c(' unsigned int xcb_buffer_len = 0;')
+ _c(' unsigned int xcb_block_len = 0;')
+ _c(' unsigned int xcb_pad = 0;')
+
+ elif 'sizeof' == context:
+ param_names = [p[2] for p in params]
+ if self.is_switch:
+ # switch: call _unpack()
+ _c(' %s _aux;', self.c_type)
+ _c(' return %s(%s, &_aux);', self.c_unpack_name, reduce(lambda x,y: "%s, %s" % (x, y), param_names))
+ _c('}')
+ return
+ elif self.var_followed_by_fixed_fields:
+ # special case: call _unserialize()
+ _c(' return %s(%s, NULL);', self.c_unserialize_name, reduce(lambda x,y: "%s, %s" % (x, y), param_names))
+ _c('}')
+ return
+ else:
+ _c(' char *xcb_tmp = (char *)_buffer;')
+ prefix = [('_aux', '->', self)]
+
+ count = _c_serialize_helper(context, self, code_lines, temp_vars, prefix=prefix)
+ # update variable size fields (only important for context=='serialize'
+ variable_size_fields = count
+ if 'serialize' == context:
+ temp_vars.append(' unsigned int xcb_pad = 0;')
+ temp_vars.append(' char xcb_pad0[3] = {0, 0, 0};')
+ temp_vars.append(' struct iovec xcb_parts[%d];' % count)
+ temp_vars.append(' unsigned int xcb_parts_idx = 0;')
+ temp_vars.append(' unsigned int xcb_block_len = 0;')
+ temp_vars.append(' unsigned int i;')
+ temp_vars.append(' char *xcb_tmp;')
+ elif 'sizeof' == context:
+ # neither switch nor intermixed fixed and variable size fields:
+ # evaluate parameters directly
+ if not (self.is_switch or self.var_followed_by_fixed_fields):
+
+ # look if we have to declare an '_aux' variable at all
+ if len(list(filter(lambda x: x.find('_aux')!=-1, code_lines)))>0:
+ if not self.var_followed_by_fixed_fields:
+ _c(' const %s *_aux = (%s *)_buffer;', self.c_type, self.c_type)
+ else:
+ _c(' %s *_aux = malloc(sizeof(%s));', self.c_type, self.c_type)
+
+ _c(' unsigned int xcb_buffer_len = 0;')
+ _c(' unsigned int xcb_block_len = 0;')
+ _c(' unsigned int xcb_pad = 0;')
+
+ _c('')
+ for t in temp_vars:
+ _c(t)
+ _c('')
+ for l in code_lines:
+ _c(l)
+
+ # variable sized fields have been collected, now
+ # allocate memory and copy everything into a continuous memory area
+ # note: this is not necessary in case of unpack
+ if context in ('serialize', 'unserialize'):
+ # unserialize: check for sizeof-only invocation
+ if 'unserialize' == context:
+ _c('')
+ _c(' if (NULL == _aux)')
+ _c(' return xcb_buffer_len;')
+
+ _c('')
+ _c(' if (NULL == %s) {', aux_ptr)
+ _c(' /* allocate memory */')
+ _c(' %s = malloc(xcb_buffer_len);', aux_ptr)
+ if 'serialize' == context:
+ _c(' *_buffer = xcb_out;')
+ _c(' }')
+ _c('')
+
+ # serialize: handle variable size fields in a loop
+ if 'serialize' == context:
+ if not self.is_switch and not self.var_followed_by_fixed_fields:
+ if len(wire_fields)>0:
+ _c(' *xcb_out = *_aux;')
+ # copy variable size fields into the buffer
+ if variable_size_fields > 0:
+ # xcb_out padding
+ if not self.is_switch and not self.var_followed_by_fixed_fields:
+ _c(' xcb_tmp = (char*)++xcb_out;')
+ _c(' xcb_tmp += xcb_out_pad;')
+ else:
+ _c(' xcb_tmp = xcb_out;')
+
+ # variable sized fields
+ _c(' for(i=0; i<xcb_parts_idx; i++) {')
+ _c(' if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)')
+ _c(' memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);')
+ _c(' if (0 != xcb_parts[i].iov_len)')
+ _c(' xcb_tmp += xcb_parts[i].iov_len;')
+ _c(' }')
+
+ # unserialize: assign variable size fields individually
+ if 'unserialize' == context:
+ _c(' xcb_tmp = ((char *)*_aux)+xcb_buffer_len;')
+ param_fields.reverse()
+ for field in param_fields:
+ if not field.type.fixed_size():
+ _c(' xcb_tmp -= %s_len;', field.c_field_name)
+ _c(' memmove(xcb_tmp, %s, %s_len);', field.c_field_name, field.c_field_name)
+ _c(' *%s = xcb_out;', aux_ptr)
+
+ _c('')
+ _c(' return xcb_buffer_len;')
+ _c('}')
+# _c_serialize()
+
+def _c_iterator_get_end(field, accum):
+ '''
+ Figures out what C code is needed to find the end of a variable-length structure field.
+ For nested structures, recurses into its last variable-sized field.
+ For lists, calls the end function
+ '''
+ if field.type.is_container:
+ accum = field.c_accessor_name + '(' + accum + ')'
+ return _c_iterator_get_end(field.type.last_varsized_field, accum)
+ if field.type.is_list:
+ # XXX we can always use the first way
+ if field.type.member.is_simple:
+ return field.c_end_name + '(' + accum + ')'
+ else:
+ return field.type.member.c_end_name + '(' + field.c_iterator_name + '(' + accum + '))'
+
+def _c_iterator(self, name):
+ '''
+ Declares the iterator structure and next/end functions for a given type.
+ '''
+ _h_setlevel(0)
+ _h('')
+ _h('/**')
+ _h(' * @brief %s', self.c_iterator_type)
+ _h(' **/')
+ _h('typedef struct %s {', self.c_iterator_type)
+ _h(' %s *data; /**< */', self.c_type)
+ _h(' int%s rem; /**< */', ' ' * (len(self.c_type) - 2))
+ _h(' int%s index; /**< */', ' ' * (len(self.c_type) - 2))
+ _h('} %s;', self.c_iterator_type)
+
+ _h_setlevel(1)
+ _c_setlevel(1)
+ _h('')
+ _h('/**')
+ _h(' * Get the next element of the iterator')
+ _h(' * @param i Pointer to a %s', self.c_iterator_type)
+ _h(' *')
+ _h(' * Get the next element in the iterator. The member rem is')
+ _h(' * decreased by one. The member data points to the next')
+ _h(' * element. The member index is increased by sizeof(%s)', self.c_type)
+ _h(' */')
+ _c('')
+ _hc('')
+ _hc('/*****************************************************************************')
+ _hc(' **')
+ _hc(' ** void %s', self.c_next_name)
+ _hc(' ** ')
+ _hc(' ** @param %s *i', self.c_iterator_type)
+ _hc(' ** @returns void')
+ _hc(' **')
+ _hc(' *****************************************************************************/')
+ _hc(' ')
+ _hc('void')
+ _h('%s (%s *i /**< */);', self.c_next_name, self.c_iterator_type)
+ _c('%s (%s *i /**< */)', self.c_next_name, self.c_iterator_type)
+ _c('{')
+
+ if not self.fixed_size():
+ _c(' %s *R = i->data;', self.c_type)
+
+ if self.is_union:
+ # FIXME - how to determine the size of a variable size union??
+ _c(' /* FIXME - determine the size of the union %s */', self.c_type)
+ else:
+ if self.need_sizeof:
+ _c(' xcb_generic_iterator_t child;')
+ _c(' child.data = (%s *)(((char *)R) + %s(R));',
+ self.c_type, self.c_sizeof_name)
+ _c(' i->index = (char *) child.data - (char *) i->data;')
+ else:
+ _c(' xcb_generic_iterator_t child = %s;', _c_iterator_get_end(self.last_varsized_field, 'R'))
+ _c(' i->index = child.index;')
+ _c(' --i->rem;')
+ _c(' i->data = (%s *) child.data;', self.c_type)
+
+ else:
+ _c(' --i->rem;')
+ _c(' ++i->data;')
+ _c(' i->index += sizeof(%s);', self.c_type)
+
+ _c('}')
+
+ _h('')
+ _h('/**')
+ _h(' * Return the iterator pointing to the last element')
+ _h(' * @param i An %s', self.c_iterator_type)
+ _h(' * @return The iterator pointing to the last element')
+ _h(' *')
+ _h(' * Set the current element in the iterator to the last element.')
+ _h(' * The member rem is set to 0. The member data points to the')
+ _h(' * last element.')
+ _h(' */')
+ _c('')
+ _hc('')
+ _hc('/*****************************************************************************')
+ _hc(' **')
+ _hc(' ** xcb_generic_iterator_t %s', self.c_end_name)
+ _hc(' ** ')
+ _hc(' ** @param %s i', self.c_iterator_type)
+ _hc(' ** @returns xcb_generic_iterator_t')
+ _hc(' **')
+ _hc(' *****************************************************************************/')
+ _hc(' ')
+ _hc('xcb_generic_iterator_t')
+ _h('%s (%s i /**< */);', self.c_end_name, self.c_iterator_type)
+ _c('%s (%s i /**< */)', self.c_end_name, self.c_iterator_type)
+ _c('{')
+ _c(' xcb_generic_iterator_t ret;')
+
+ if self.fixed_size():
+ _c(' ret.data = i.data + i.rem;')
+ _c(' ret.index = i.index + ((char *) ret.data - (char *) i.data);')
+ _c(' ret.rem = 0;')
+ else:
+ _c(' while(i.rem > 0)')
+ _c(' %s(&i);', self.c_next_name)
+ _c(' ret.data = i.data;')
+ _c(' ret.rem = i.rem;')
+ _c(' ret.index = i.index;')
+
+ _c(' return ret;')
+ _c('}')
+
+def _c_accessor_get_length(expr, field_mapping=None):
+ '''
+ Figures out what C code is needed to get a length field.
+ The field_mapping parameter can be used to change the absolute name of a length field.
+ For fields that follow a variable-length field, use the accessor.
+ Otherwise, just reference the structure field directly.
+ '''
+
+ lenfield_name = expr.lenfield_name
+ if lenfield_name is not None:
+ if field_mapping is not None:
+ lenfield_name = field_mapping[lenfield_name][0]
+
+ if expr.lenfield is not None and expr.lenfield.prev_varsized_field is not None:
+ # special case: variable and fixed size fields are intermixed
+ # if the lenfield is among the fixed size fields, there is no need
+ # to call a special accessor function like <expr.lenfield.c_accessor_name + '(' + prefix + ')'>
+ return field_mapping(expr.lenfield_name)
+ elif expr.lenfield_name is not None:
+ return lenfield_name
+ else:
+ return str(expr.nmemb)
+
+def _c_accessor_get_expr(expr, field_mapping):
+ '''
+ Figures out what C code is needed to get the length of a list field.
+ The field_mapping parameter can be used to change the absolute name of a length field.
+ Recurses for math operations.
+ Returns bitcount for value-mask fields.
+ Otherwise, uses the value of the length field.
+ '''
+ lenexp = _c_accessor_get_length(expr, field_mapping)
+
+ if expr.op == '~':
+ return '(' + '~' + _c_accessor_get_expr(expr.rhs, field_mapping) + ')'
+ elif expr.op == 'popcount':
+ return 'xcb_popcount(' + _c_accessor_get_expr(expr.rhs, field_mapping) + ')'
+ elif expr.op == 'enumref':
+ enum_name = expr.lenfield_type.name
+ constant_name = expr.lenfield_name
+ c_name = _n(enum_name + (constant_name,)).upper()
+ return c_name
+ elif expr.op == 'sumof':
+ # locate the referenced list object
+ list_obj = expr.lenfield_type
+ field = None
+ for f in expr.lenfield_parent.fields:
+ if f.field_name == expr.lenfield_name:
+ field = f
+ break
+
+ if field is None:
+ raise Exception("list field '%s' referenced by sumof not found" % expr.lenfield_name)
+ list_name = field_mapping[field.c_field_name][0]
+ c_length_func = "%s(%s)" % (field.c_length_name, list_name)
+ # note: xcb_sumof() has only been defined for integers
+ c_length_func = _c_accessor_get_expr(field.type.expr, field_mapping)
+ return 'xcb_sumof(%s, %s)' % (list_name, c_length_func)
+ elif expr.op != None:
+ return ('(' + _c_accessor_get_expr(expr.lhs, field_mapping) +
+ ' ' + expr.op + ' ' +
+ _c_accessor_get_expr(expr.rhs, field_mapping) + ')')
+ elif expr.bitfield:
+ return 'xcb_popcount(' + lenexp + ')'
+ else:
+ return lenexp
+
+def type_pad_type(type):
+ if type == 'void':
+ return 'char'
+ return type
+
+def _c_accessors_field(self, field):
+ '''
+ Declares the accessor functions for a non-list field that follows a variable-length field.
+ '''
+ c_type = self.c_type
+
+ # special case: switch
+ switch_obj = self if self.is_switch else None
+ if self.is_bitcase:
+ switch_obj = self.parents[-1]
+ if switch_obj is not None:
+ c_type = switch_obj.c_type
+
+ if field.type.is_simple:
+ _hc('')
+ _hc('')
+ _hc('/*****************************************************************************')
+ _hc(' ** ')
+ _hc(' ** %s %s', field.c_field_type, field.c_accessor_name)
+ _hc(' ** ')
+ _hc(' ** @param const %s *R', c_type)
+ _hc(' ** @returns %s', field.c_field_type)
+ _hc(' **')
+ _hc(' *****************************************************************************/')
+ _hc(' ')
+ _hc('%s', field.c_field_type)
+ _h('%s (const %s *R /**< */);', field.c_accessor_name, c_type)
+ _c('%s (const %s *R /**< */)', field.c_accessor_name, c_type)
+ _c('{')
+ if field.prev_varsized_field is None:
+ _c(' return (%s *) (R + 1);', field.c_field_type)
+ else:
+ _c(' xcb_generic_iterator_t prev = %s;', _c_iterator_get_end(field.prev_varsized_field, 'R'))
+ _c(' return * (%s *) ((char *) prev.data + XCB_TYPE_PAD(%s, prev.index) + %d);',
+ field.c_field_type, type_pad_type(field.first_field_after_varsized.type.c_type), field.prev_varsized_offset)
+ _c('}')
+ else:
+ _hc('')
+ _hc('')
+ _hc('/*****************************************************************************')
+ _hc(' **')
+ _hc(' ** %s * %s', field.c_field_type, field.c_accessor_name)
+ _hc(' ** ')
+ _hc(' ** @param const %s *R', c_type)
+ _hc(' ** @returns %s *', field.c_field_type)
+ _hc(' **')
+ _hc(' *****************************************************************************/')
+ _hc(' ')
+ if field.type.is_switch and switch_obj is None:
+ return_type = 'void *'
+ else:
+ return_type = '%s *' % field.c_field_type
+
+ _hc(return_type)
+ _h('%s (const %s *R /**< */);', field.c_accessor_name, c_type)
+ _c('%s (const %s *R /**< */)', field.c_accessor_name, c_type)
+ _c('{')
+ if field.prev_varsized_field is None:
+ _c(' return (%s) (R + 1);', return_type)
+ # note: the special case 'variable fields followed by fixed size fields'
+ # is not of any consequence here, since the ordering gets
+ # 'corrected' in the reply function
+ else:
+ _c(' xcb_generic_iterator_t prev = %s;', _c_iterator_get_end(field.prev_varsized_field, 'R'))
+ _c(' return (%s) ((char *) prev.data + XCB_TYPE_PAD(%s, prev.index) + %d);',
+ return_type, type_pad_type(field.first_field_after_varsized.type.c_type), field.prev_varsized_offset)
+ _c('}')
+
+
+def _c_accessors_list(self, field):
+ '''
+ Declares the accessor functions for a list field.
+ Declares a direct-accessor function only if the list members are fixed size.
+ Declares length and get-iterator functions always.
+ '''
+ list = field.type
+ c_type = self.c_type
+
+ # special case: switch
+ # in case of switch, 2 params have to be supplied to certain accessor functions:
+ # 1. the anchestor object (request or reply)
+ # 2. the (anchestor) switch object
+ # the reason is that switch is either a child of a request/reply or nested in another switch,
+ # so whenever we need to access a length field, we might need to refer to some anchestor type
+ switch_obj = self if self.is_switch else None
+ if self.is_bitcase:
+ switch_obj = self.parents[-1]
+ if switch_obj is not None:
+ c_type = switch_obj.c_type
+
+ params = []
+ fields = {}
+ parents = self.parents if hasattr(self, 'parents') else [self]
+ # 'R': parents[0] is always the 'toplevel' container type
+ params.append(('const %s *R' % parents[0].c_type, parents[0]))
+ fields.update(_c_helper_field_mapping(parents[0], [('R', '->', parents[0])], flat=True))
+ # auxiliary object for 'R' parameters
+ R_obj = parents[0]
+
+ if switch_obj is not None:
+ # now look where the fields are defined that are needed to evaluate
+ # the switch expr, and store the parent objects in accessor_params and
+ # the fields in switch_fields
+
+ # 'S': name for the 'toplevel' switch
+ toplevel_switch = parents[1]
+ params.append(('const %s *S' % toplevel_switch.c_type, toplevel_switch))
+ fields.update(_c_helper_field_mapping(toplevel_switch, [('S', '->', toplevel_switch)], flat=True))
+
+ # initialize prefix for everything "below" S
+ prefix_str = '/* %s */ S' % toplevel_switch.name[-1]
+ prefix = [(prefix_str, '->', toplevel_switch)]
+
+ # look for fields in the remaining containers
+ for p in parents[2:] + [self]:
+ # the separator between parent and child is always '.' here,
+ # because of nested switch statements
+ if not p.is_bitcase or (p.is_bitcase and p.has_name):
+ prefix.append((p.name[-1], '.', p))
+ fields.update(_c_helper_field_mapping(p, prefix, flat=True))
+
+ # auxiliary object for 'S' parameter
+ S_obj = parents[1]
+
+ _h_setlevel(1)
+ _c_setlevel(1)
+ if list.member.fixed_size():
+ idx = 1 if switch_obj is not None else 0
+ _hc('')
+ _hc('')
+ _hc('/*****************************************************************************')
+ _hc(' **')
+ _hc(' ** %s * %s', field.c_field_type, field.c_accessor_name)
+ _hc(' ** ')
+ _hc(' ** @param %s', params[idx][0])
+ _hc(' ** @returns %s *', field.c_field_type)
+ _hc(' **')
+ _hc(' *****************************************************************************/')
+ _hc(' ')
+ _hc('%s *', field.c_field_type)
+
+ _h('%s (%s /**< */);', field.c_accessor_name, params[idx][0])
+ _c('%s (%s /**< */)', field.c_accessor_name, params[idx][0])
+
+ _c('{')
+ if switch_obj is not None:
+ _c(' return %s;', fields[field.c_field_name][0])
+ elif field.prev_varsized_field is None:
+ _c(' return (%s *) (R + 1);', field.c_field_type)
+ else:
+ _c(' xcb_generic_iterator_t prev = %s;', _c_iterator_get_end(field.prev_varsized_field, 'R'))
+ _c(' return (%s *) ((char *) prev.data + XCB_TYPE_PAD(%s, prev.index) + %d);',
+ field.c_field_type, type_pad_type(field.first_field_after_varsized.type.c_type), field.prev_varsized_offset)
+ _c('}')
+
+ _hc('')
+ _hc('')
+ _hc('/*****************************************************************************')
+ _hc(' **')
+ _hc(' ** int %s', field.c_length_name)
+ _hc(' ** ')
+ _hc(' ** @param const %s *R', c_type)
+ _hc(' ** @returns int')
+ _hc(' **')
+ _hc(' *****************************************************************************/')
+ _hc(' ')
+ _hc('int')
+ if switch_obj is not None:
+ _hc('%s (const %s *R /**< */,', field.c_length_name, R_obj.c_type)
+ spacing = ' '*(len(field.c_length_name)+2)
+ _h('%sconst %s *S /**< */);', spacing, S_obj.c_type)
+ _c('%sconst %s *S /**< */)', spacing, S_obj.c_type)
+ length = _c_accessor_get_expr(field.type.expr, fields)
+ else:
+ _h('%s (const %s *R /**< */);', field.c_length_name, c_type)
+ _c('%s (const %s *R /**< */)', field.c_length_name, c_type)
+ length = _c_accessor_get_expr(field.type.expr, fields)
+ _c('{')
+ _c(' return %s;', length)
+ _c('}')
+
+ if field.type.member.is_simple:
+ _hc('')
+ _hc('')
+ _hc('/*****************************************************************************')
+ _hc(' **')
+ _hc(' ** xcb_generic_iterator_t %s', field.c_end_name)
+ _hc(' ** ')
+ _hc(' ** @param const %s *R', c_type)
+ _hc(' ** @returns xcb_generic_iterator_t')
+ _hc(' **')
+ _hc(' *****************************************************************************/')
+ _hc(' ')
+ _hc('xcb_generic_iterator_t')
+ if switch_obj is not None:
+ _hc('%s (const %s *R /**< */,', field.c_end_name, R_obj.c_type)
+ spacing = ' '*(len(field.c_end_name)+2)
+ _h('%sconst %s *S /**< */);', spacing, S_obj.c_type)
+ _c('%sconst %s *S /**< */)', spacing, S_obj.c_type)
+ else:
+ _h('%s (const %s *R /**< */);', field.c_end_name, c_type)
+ _c('%s (const %s *R /**< */)', field.c_end_name, c_type)
+ _c('{')
+ _c(' xcb_generic_iterator_t i;')
+
+ param = 'R' if switch_obj is None else 'S'
+ if switch_obj is not None:
+ _c(' i.data = %s + %s;', fields[field.c_field_name][0],
+ _c_accessor_get_expr(field.type.expr, fields))
+ elif field.prev_varsized_field == None:
+ _c(' i.data = ((%s *) (R + 1)) + (%s);', field.type.c_wiretype,
+ _c_accessor_get_expr(field.type.expr, fields))
+ else:
+ _c(' xcb_generic_iterator_t child = %s;',
+ _c_iterator_get_end(field.prev_varsized_field, 'R'))
+ _c(' i.data = ((%s *) child.data) + (%s);', field.type.c_wiretype,
+ _c_accessor_get_expr(field.type.expr, fields))
+
+ _c(' i.rem = 0;')
+ _c(' i.index = (char *) i.data - (char *) %s;', param)
+ _c(' return i;')
+ _c('}')
+
+ else:
+ _hc('')
+ _hc('')
+ _hc('/*****************************************************************************')
+ _hc(' **')
+ _hc(' ** %s %s', field.c_iterator_type, field.c_iterator_name)
+ _hc(' ** ')
+ _hc(' ** @param const %s *R', c_type)
+ _hc(' ** @returns %s', field.c_iterator_type)
+ _hc(' **')
+ _hc(' *****************************************************************************/')
+ _hc(' ')
+
+ _hc('%s', field.c_iterator_type)
+ if switch_obj is not None:
+ _hc('%s (const %s *R /**< */,', field.c_iterator_name, R_obj.c_type)
+ spacing = ' '*(len(field.c_iterator_name)+2)
+ _h('%sconst %s *S /**< */);', spacing, S_obj.c_type)
+ _c('%sconst %s *S /**< */)', spacing, S_obj.c_type)
+ else:
+ _h('%s (const %s *R /**< */);', field.c_iterator_name, c_type)
+ _c('%s (const %s *R /**< */)', field.c_iterator_name, c_type)
+ _c('{')
+ _c(' %s i;', field.c_iterator_type)
+
+ if switch_obj is not None:
+ _c(' i.data = %s;', fields[field.c_field_name][0])
+ _c(' i.rem = %s;', _c_accessor_get_expr(field.type.expr, fields))
+ elif field.prev_varsized_field == None:
+ _c(' i.data = (%s *) (R + 1);', field.c_field_type)
+ else:
+ _c(' xcb_generic_iterator_t prev = %s;', _c_iterator_get_end(field.prev_varsized_field, 'R'))
+ _c(' i.data = (%s *) ((char *) prev.data + XCB_TYPE_PAD(%s, prev.index));',
+ field.c_field_type, type_pad_type(field.c_field_type))
+ if switch_obj is None:
+ _c(' i.rem = %s;', _c_accessor_get_expr(field.type.expr, fields))
+ _c(' i.index = (char *) i.data - (char *) %s;', 'R' if switch_obj is None else 'S' )
+ _c(' return i;')
+ _c('}')
+
+def _c_accessors(self, name, base):
+ '''
+ Declares the accessor functions for the fields of a structure.
+ '''
+ # no accessors for switch itself -
+ # switch always needs to be unpacked explicitly
+# if self.is_switch:
+# pass
+# else:
+ if True:
+ for field in self.fields:
+ if field.type.is_list and not field.type.fixed_size():
+ _c_accessors_list(self, field)
+ elif field.prev_varsized_field is not None or not field.type.fixed_size():
+ _c_accessors_field(self, field)
+
+def c_simple(self, name):
+ '''
+ Exported function that handles cardinal type declarations.
+ These are types which are typedef'd to one of the CARDx's, char, float, etc.
+ '''
+ _c_type_setup(self, name, ())
+
+ if (self.name != name):
+ # Typedef
+ _h_setlevel(0)
+ my_name = _t(name)
+ _h('')
+ _h('typedef %s %s;', _t(self.name), my_name)
+
+ # Iterator
+ _c_iterator(self, name)
+
+def _c_complex(self):
+ '''
+ Helper function for handling all structure types.
+ Called for all structs, requests, replies, events, errors.
+ '''
+ _h_setlevel(0)
+ _h('')
+ _h('/**')
+ _h(' * @brief %s', self.c_type)
+ _h(' **/')
+ _h('typedef %s %s {', self.c_container, self.c_type)
+
+ struct_fields = []
+ maxtypelen = 0
+
+ varfield = None
+ for field in self.fields:
+ if not field.type.fixed_size() and not self.is_switch and not self.is_union:
+ varfield = field.c_field_name
+ continue
+ if field.wire:
+ struct_fields.append(field)
+
+ for field in struct_fields:
+ length = len(field.c_field_type)
+ # account for '*' pointer_spec
+ if not field.type.fixed_size():
+ length += 1
+ maxtypelen = max(maxtypelen, length)
+
+ def _c_complex_field(self, field, space=''):
+ if (field.type.fixed_size() or
+ # in case of switch with switch children, don't make the field a pointer
+ # necessary for unserialize to work
+ (self.is_switch and field.type.is_switch)):
+ spacing = ' ' * (maxtypelen - len(field.c_field_type))
+ _h('%s %s%s %s%s; /**< */', space, field.c_field_type, spacing, field.c_field_name, field.c_subscript)
+ else:
+ spacing = ' ' * (maxtypelen - (len(field.c_field_type) + 1))
+ _h('%s %s%s *%s%s; /**< */', space, field.c_field_type, spacing, field.c_field_name, field.c_subscript)
+
+ if not self.is_switch:
+ for field in struct_fields:
+ _c_complex_field(self, field)
+ else:
+ for b in self.bitcases:
+ space = ''
+ if b.type.has_name:
+ _h(' struct _%s {', b.c_field_name)
+ space = ' '
+ for field in b.type.fields:
+ _c_complex_field(self, field, space)
+ if b.type.has_name:
+ _h(' } %s;', b.c_field_name)
+
+ _h('} %s;', self.c_type)
+
+def c_struct(self, name):
+ '''
+ Exported function that handles structure declarations.
+ '''
+ _c_type_setup(self, name, ())
+ _c_complex(self)
+ _c_accessors(self, name, name)
+ _c_iterator(self, name)
+
+def c_union(self, name):
+ '''
+ Exported function that handles union declarations.
+ '''
+ _c_type_setup(self, name, ())
+ _c_complex(self)
+ _c_iterator(self, name)
+
+def _c_request_helper(self, name, cookie_type, void, regular, aux=False):
+ '''
+ Declares a request function.
+ '''
+
+ # Four stunningly confusing possibilities here:
+ #
+ # Void Non-void
+ # ------------------------------
+ # "req" "req"
+ # 0 flag CHECKED flag Normal Mode
+ # void_cookie req_cookie
+ # ------------------------------
+ # "req_checked" "req_unchecked"
+ # CHECKED flag 0 flag Abnormal Mode
+ # void_cookie req_cookie
+ # ------------------------------
+
+
+ # Whether we are _checked or _unchecked
+ checked = void and not regular
+ unchecked = not void and not regular
+
+ # What kind of cookie we return
+ func_cookie = 'xcb_void_cookie_t' if void else self.c_cookie_type
+
+ # What flag is passed to xcb_request
+ func_flags = '0' if (void and regular) or (not void and not regular) else 'XCB_REQUEST_CHECKED'
+
+ # Global extension id variable or NULL for xproto
+ func_ext_global = '&' + _ns.c_ext_global_name if _ns.is_ext else '0'
+
+ # What our function name is
+ func_name = self.c_request_name if not aux else self.c_aux_name
+ if checked:
+ func_name = self.c_checked_name if not aux else self.c_aux_checked_name
+ if unchecked:
+ func_name = self.c_unchecked_name if not aux else self.c_aux_unchecked_name
+
+ param_fields = []
+ wire_fields = []
+ maxtypelen = len('xcb_connection_t')
+ serial_fields = []
+ # special case: list with variable size elements
+ list_with_var_size_elems = False
+
+ for field in self.fields:
+ if field.visible:
+ # The field should appear as a call parameter
+ param_fields.append(field)
+ if field.wire and not field.auto:
+ # We need to set the field up in the structure
+ wire_fields.append(field)
+ if field.type.need_serialize or field.type.need_sizeof:
+ serial_fields.append(field)
+
+ for field in param_fields:
+ c_field_const_type = field.c_field_const_type
+ if field.type.need_serialize and not aux:
+ c_field_const_type = "const void"
+ if len(c_field_const_type) > maxtypelen:
+ maxtypelen = len(c_field_const_type)
+ if field.type.is_list and not field.type.member.fixed_size():
+ list_with_var_size_elems = True
+
+ _h_setlevel(1)
+ _c_setlevel(1)
+ _h('')
+ _h('/**')
+ _h(' * Delivers a request to the X server')
+ _h(' * @param c The connection')
+ _h(' * @return A cookie')
+ _h(' *')
+ _h(' * Delivers a request to the X server.')
+ _h(' * ')
+ if checked:
+ _h(' * This form can be used only if the request will not cause')
+ _h(' * a reply to be generated. Any returned error will be')
+ _h(' * saved for handling by xcb_request_check().')
+ if unchecked:
+ _h(' * This form can be used only if the request will cause')
+ _h(' * a reply to be generated. Any returned error will be')
+ _h(' * placed in the event queue.')
+ _h(' */')
+ _c('')
+ _hc('')
+ _hc('/*****************************************************************************')
+ _hc(' **')
+ _hc(' ** %s %s', cookie_type, func_name)
+ _hc(' ** ')
+
+ spacing = ' ' * (maxtypelen - len('xcb_connection_t'))
+ _hc(' ** @param xcb_connection_t%s *c', spacing)
+
+ for field in param_fields:
+ c_field_const_type = field.c_field_const_type
+ if field.type.need_serialize and not aux:
+ c_field_const_type = "const void"
+ spacing = ' ' * (maxtypelen - len(c_field_const_type))
+ _hc(' ** @param %s%s %s%s', c_field_const_type, spacing, field.c_pointer, field.c_field_name)
+
+ _hc(' ** @returns %s', cookie_type)
+ _hc(' **')
+ _hc(' *****************************************************************************/')
+ _hc(' ')
+ _hc('%s', cookie_type)
+
+ spacing = ' ' * (maxtypelen - len('xcb_connection_t'))
+ comma = ',' if len(param_fields) else ');'
+ _h('%s (xcb_connection_t%s *c /**< */%s', func_name, spacing, comma)
+ comma = ',' if len(param_fields) else ')'
+ _c('%s (xcb_connection_t%s *c /**< */%s', func_name, spacing, comma)
+
+ func_spacing = ' ' * (len(func_name) + 2)
+ count = len(param_fields)
+ for field in param_fields:
+ count = count - 1
+ c_field_const_type = field.c_field_const_type
+ c_pointer = field.c_pointer
+ if field.type.need_serialize and not aux:
+ c_field_const_type = "const void"
+ c_pointer = '*'
+ spacing = ' ' * (maxtypelen - len(c_field_const_type))
+ comma = ',' if count else ');'
+ _h('%s%s%s %s%s /**< */%s', func_spacing, c_field_const_type,
+ spacing, c_pointer, field.c_field_name, comma)
+ comma = ',' if count else ')'
+ _c('%s%s%s %s%s /**< */%s', func_spacing, c_field_const_type,
+ spacing, c_pointer, field.c_field_name, comma)
+
+ count = 2
+ if not self.var_followed_by_fixed_fields:
+ for field in param_fields:
+ if not field.type.fixed_size():
+ count = count + 2
+ if field.type.need_serialize:
+ # _serialize() keeps track of padding automatically
+ count -= 1
+ dimension = count + 2
+
+ _c('{')
+ _c(' static const xcb_protocol_request_t xcb_req = {')
+ _c(' /* count */ %d,', count)
+ _c(' /* ext */ %s,', func_ext_global)
+ _c(' /* opcode */ %s,', self.c_request_name.upper())
+ _c(' /* isvoid */ %d', 1 if void else 0)
+ _c(' };')
+ _c(' ')
+
+ _c(' struct iovec xcb_parts[%d];', dimension)
+ _c(' %s xcb_ret;', func_cookie)
+ _c(' %s xcb_out;', self.c_type)
+ if self.var_followed_by_fixed_fields:
+ _c(' /* in the protocol description, variable size fields are followed by fixed size fields */')
+ _c(' void *xcb_aux = 0;')
+
+
+ for idx, f in enumerate(serial_fields):
+ if aux:
+ _c(' void *xcb_aux%d = 0;' % (idx))
+ if list_with_var_size_elems:
+ _c(' unsigned int i;')
+ _c(' unsigned int xcb_tmp_len;')
+ _c(' char *xcb_tmp;')
+ _c(' ')
+ # simple request call tracing
+# _c(' printf("in function %s\\n");' % func_name)
+
+ # fixed size fields
+ for field in wire_fields:
+ if field.type.fixed_size():
+ if field.type.is_expr:
+ _c(' xcb_out.%s = %s;', field.c_field_name, _c_accessor_get_expr(field.type.expr, None))
+ elif field.type.is_pad:
+ if field.type.nmemb == 1:
+ _c(' xcb_out.%s = 0;', field.c_field_name)
+ else:
+ _c(' memset(xcb_out.%s, 0, %d);', field.c_field_name, field.type.nmemb)
+ else:
+ if field.type.nmemb == 1:
+ _c(' xcb_out.%s = %s;', field.c_field_name, field.c_field_name)
+ else:
+ _c(' memcpy(xcb_out.%s, %s, %d);', field.c_field_name, field.c_field_name, field.type.nmemb)
+
+ def get_serialize_args(type_obj, c_field_name, aux_var, context='serialize'):
+ serialize_args = get_serialize_params(context, type_obj,
+ c_field_name,
+ aux_var)[2]
+ return reduce(lambda x,y: "%s, %s" % (x,y), [a[2] for a in serialize_args])
+
+ # calls in order to free dyn. all. memory
+ free_calls = []
+
+ _c(' ')
+ if not self.var_followed_by_fixed_fields:
+ _c(' xcb_parts[2].iov_base = (char *) &xcb_out;')
+ _c(' xcb_parts[2].iov_len = sizeof(xcb_out);')
+ _c(' xcb_parts[3].iov_base = 0;')
+ _c(' xcb_parts[3].iov_len = -xcb_parts[2].iov_len & 3;')
+
+ count = 4
+
+ for field in param_fields:
+ if not field.type.fixed_size():
+ _c(' /* %s %s */', field.type.c_type, field.c_field_name)
+ # default: simple cast to char *
+ if not field.type.need_serialize and not field.type.need_sizeof:
+ _c(' xcb_parts[%d].iov_base = (char *) %s;', count, field.c_field_name)
+ if field.type.is_list:
+ if field.type.member.fixed_size():
+ _c(' xcb_parts[%d].iov_len = %s * sizeof(%s);', count,
+ _c_accessor_get_expr(field.type.expr, None),
+ field.type.member.c_wiretype)
+ else:
+ list_length = _c_accessor_get_expr(field.type.expr, None)
+
+ length = ''
+ _c(" xcb_parts[%d].iov_len = 0;" % count)
+ _c(" xcb_tmp = (char *)%s;", field.c_field_name)
+ _c(" for(i=0; i<%s; i++) {" % list_length)
+ _c(" xcb_tmp_len = %s(xcb_tmp);" %
+ (field.type.c_sizeof_name))
+ _c(" xcb_parts[%d].iov_len += xcb_tmp_len;" % count)
+ _c(" xcb_tmp += xcb_tmp_len;")
+ _c(" }")
+ else:
+ # not supposed to happen
+ raise Exception("unhandled variable size field %s" % field.c_field_name)
+ else:
+ if not aux:
+ _c(' xcb_parts[%d].iov_base = (char *) %s;', count, field.c_field_name)
+ idx = serial_fields.index(field)
+ aux_var = '&xcb_aux%d' % idx
+ context = 'serialize' if aux else 'sizeof'
+ _c(' xcb_parts[%d].iov_len = ', count)
+ if aux:
+ serialize_args = get_serialize_args(field.type, aux_var, field.c_field_name, context)
+ _c(' %s (%s);', field.type.c_serialize_name, serialize_args)
+ _c(' xcb_parts[%d].iov_base = xcb_aux%d;' % (count, idx))
+ free_calls.append(' free(xcb_aux%d);' % idx)
+ else:
+ serialize_args = get_serialize_args(field.type, field.c_field_name, aux_var, context)
+ func_name = field.type.c_sizeof_name
+ _c(' %s (%s);', func_name, serialize_args)
+
+ count += 1
+ if not (field.type.need_serialize or field.type.need_sizeof):
+ # the _serialize() function keeps track of padding automatically
+ _c(' xcb_parts[%d].iov_base = 0;', count)
+ _c(' xcb_parts[%d].iov_len = -xcb_parts[%d].iov_len & 3;', count, count-1)
+ count += 1
+
+ # elif self.var_followed_by_fixed_fields:
+ else:
+ _c(' xcb_parts[2].iov_base = (char *) &xcb_out;')
+ # request header: opcodes + length
+ _c(' xcb_parts[2].iov_len = 2*sizeof(uint8_t) + sizeof(uint16_t);')
+ count += 1
+ # call _serialize()
+ buffer_var = '&xcb_aux'
+ serialize_args = get_serialize_args(self, buffer_var, '&xcb_out', 'serialize')
+ _c(' xcb_parts[%d].iov_len = %s (%s);', count, self.c_serialize_name, serialize_args)
+ _c(' xcb_parts[%d].iov_base = (char *) xcb_aux;', count)
+ free_calls.append(' free(xcb_aux);')
+ # no padding necessary - _serialize() keeps track of padding automatically
+
+ _c(' ')
+ _c(' xcb_ret.sequence = xcb_send_request(c, %s, xcb_parts + 2, &xcb_req);', func_flags)
+
+ # free dyn. all. data, if any
+ for f in free_calls:
+ _c(f)
+ _c(' return xcb_ret;')
+ _c('}')
+
+def _c_reply(self, name):
+ '''
+ Declares the function that returns the reply structure.
+ '''
+ spacing1 = ' ' * (len(self.c_cookie_type) - len('xcb_connection_t'))
+ spacing2 = ' ' * (len(self.c_cookie_type) - len('xcb_generic_error_t'))
+ spacing3 = ' ' * (len(self.c_reply_name) + 2)
+
+ # check if _unserialize() has to be called for any field
+ def look_for_special_cases(complex_obj):
+ unserialize_fields = []
+ # no unserialize call in case of switch
+ if not complex_obj.is_switch:
+ for field in complex_obj.fields:
+ # three cases: 1. field with special case
+ # 2. container that contains special case field
+ # 3. list with special case elements
+ if field.type.var_followed_by_fixed_fields:
+ unserialize_fields.append(field)
+ elif field.type.is_container:
+ unserialize_fields += look_for_special_cases(field.type)
+ elif field.type.is_list:
+ if field.type.member.var_followed_by_fixed_fields:
+ unserialize_fields.append(field)
+ if field.type.member.is_container:
+ unserialize_fields += look_for_special_cases(field.type.member)
+ return unserialize_fields
+
+ unserialize_fields = look_for_special_cases(self.reply)
+
+ _h('')
+ _h('/**')
+ _h(' * Return the reply')
+ _h(' * @param c The connection')
+ _h(' * @param cookie The cookie')
+ _h(' * @param e The xcb_generic_error_t supplied')
+ _h(' *')
+ _h(' * Returns the reply of the request asked by')
+ _h(' * ')
+ _h(' * The parameter @p e supplied to this function must be NULL if')
+ _h(' * %s(). is used.', self.c_unchecked_name)
+ _h(' * Otherwise, it stores the error if any.')
+ _h(' *')
+ _h(' * The returned value must be freed by the caller using free().')
+ _h(' */')
+ _c('')
+ _hc('')
+ _hc('/*****************************************************************************')
+ _hc(' **')
+ _hc(' ** %s * %s', self.c_reply_type, self.c_reply_name)
+ _hc(' ** ')
+ _hc(' ** @param xcb_connection_t%s *c', spacing1)
+ _hc(' ** @param %s cookie', self.c_cookie_type)
+ _hc(' ** @param xcb_generic_error_t%s **e', spacing2)
+ _hc(' ** @returns %s *', self.c_reply_type)
+ _hc(' **')
+ _hc(' *****************************************************************************/')
+ _hc(' ')
+ _hc('%s *', self.c_reply_type)
+ _hc('%s (xcb_connection_t%s *c /**< */,', self.c_reply_name, spacing1)
+ _hc('%s%s cookie /**< */,', spacing3, self.c_cookie_type)
+ _h('%sxcb_generic_error_t%s **e /**< */);', spacing3, spacing2)
+ _c('%sxcb_generic_error_t%s **e /**< */)', spacing3, spacing2)
+ _c('{')
+
+ if len(unserialize_fields)>0:
+ # certain variable size fields need to be unserialized explicitly
+ _c(' %s *reply = (%s *) xcb_wait_for_reply(c, cookie.sequence, e);',
+ self.c_reply_type, self.c_reply_type)
+ _c(' int i;')
+ for field in unserialize_fields:
+ if field.type.is_list:
+ _c(' %s %s_iter = %s(reply);', field.c_iterator_type, field.c_field_name, field.c_iterator_name)
+ _c(' int %s_len = %s(reply);', field.c_field_name, field.c_length_name)
+ _c(' %s *%s_data;', field.c_field_type, field.c_field_name)
+ else:
+ raise Exception('not implemented: call _unserialize() in reply for non-list type %s', field.c_field_type)
+ # call _unserialize(), using the reply as source and target buffer
+ _c(' /* special cases: transform parts of the reply to match XCB data structures */')
+ for field in unserialize_fields:
+ if field.type.is_list:
+ _c(' for(i=0; i<%s_len; i++) {', field.c_field_name)
+ _c(' %s_data = %s_iter.data;', field.c_field_name, field.c_field_name)
+ _c(' %s((const void *)%s_data, &%s_data);', field.type.c_unserialize_name,
+ field.c_field_name, field.c_field_name)
+ _c(' %s(&%s_iter);', field.type.c_next_name, field.c_field_name)
+ _c(' }')
+ # return the transformed reply
+ _c(' return reply;')
+
+ else:
+ _c(' return (%s *) xcb_wait_for_reply(c, cookie.sequence, e);', self.c_reply_type)
+
+ _c('}')
+
+def _c_opcode(name, opcode):
+ '''
+ Declares the opcode define for requests, events, and errors.
+ '''
+ _h_setlevel(0)
+ _h('')
+ _h('/** Opcode for %s. */', _n(name))
+ _h('#define %s %s', _n(name).upper(), opcode)
+
+def _c_cookie(self, name):
+ '''
+ Declares the cookie type for a non-void request.
+ '''
+ _h_setlevel(0)
+ _h('')
+ _h('/**')
+ _h(' * @brief %s', self.c_cookie_type)
+ _h(' **/')
+ _h('typedef struct %s {', self.c_cookie_type)
+ _h(' unsigned int sequence; /**< */')
+ _h('} %s;', self.c_cookie_type)
+
+def c_request(self, name):
+ '''
+ Exported function that handles request declarations.
+ '''
+ _c_type_setup(self, name, ('request',))
+
+ if self.reply:
+ # Cookie type declaration
+ _c_cookie(self, name)
+
+ # Opcode define
+ _c_opcode(name, self.opcode)
+
+ # Request structure declaration
+ _c_complex(self)
+
+ if self.reply:
+ _c_type_setup(self.reply, name, ('reply',))
+ # Reply structure definition
+ _c_complex(self.reply)
+ # Request prototypes
+ _c_request_helper(self, name, self.c_cookie_type, False, True)
+ _c_request_helper(self, name, self.c_cookie_type, False, False)
+ if self.need_aux:
+ _c_request_helper(self, name, self.c_cookie_type, False, True, True)
+ _c_request_helper(self, name, self.c_cookie_type, False, False, True)
+ # Reply accessors
+ _c_accessors(self.reply, name + ('reply',), name)
+ _c_reply(self, name)
+ else:
+ # Request prototypes
+ _c_request_helper(self, name, 'xcb_void_cookie_t', True, False)
+ _c_request_helper(self, name, 'xcb_void_cookie_t', True, True)
+ if self.need_aux:
+ _c_request_helper(self, name, 'xcb_void_cookie_t', True, False, True)
+ _c_request_helper(self, name, 'xcb_void_cookie_t', True, True, True)
+
+
+def c_event(self, name):
+ '''
+ Exported function that handles event declarations.
+ '''
+ _c_type_setup(self, name, ('event',))
+
+ # Opcode define
+ _c_opcode(name, self.opcodes[name])
+
+ if self.name == name:
+ # Structure definition
+ _c_complex(self)
+ else:
+ # Typedef
+ _h('')
+ _h('typedef %s %s;', _t(self.name + ('event',)), _t(name + ('event',)))
+
+def c_error(self, name):
+ '''
+ Exported function that handles error declarations.
+ '''
+ _c_type_setup(self, name, ('error',))
+
+ # Opcode define
+ _c_opcode(name, self.opcodes[name])
+
+ if self.name == name:
+ # Structure definition
+ _c_complex(self)
+ else:
+ # Typedef
+ _h('')
+ _h('typedef %s %s;', _t(self.name + ('error',)), _t(name + ('error',)))
+
+
+# Main routine starts here
+
+# Must create an "output" dictionary before any xcbgen imports.
+output = {'open' : c_open,
+ 'close' : c_close,
+ 'simple' : c_simple,
+ 'enum' : c_enum,
+ 'struct' : c_struct,
+ 'union' : c_union,
+ 'request' : c_request,
+ 'event' : c_event,
+ 'error' : c_error,
+ }
+
+# Boilerplate below this point
+
+# Check for the argument that specifies path to the xcbgen python package.
+try:
+ opts, args = getopt.getopt(sys.argv[1:], 'p:')
+except getopt.GetoptError as err:
+ print(err)
+ print('Usage: c_client.py [-p path] file.xml')
+ sys.exit(1)
+
+for (opt, arg) in opts:
+ if opt == '-p':
+ sys.path.append(arg)
+
+# Import the module class
+try:
+ from xcbgen.state import Module
+except ImportError:
+ print('''
+Failed to load the xcbgen Python package!
+Make sure that xcb/proto installed it on your Python path.
+If not, you will need to create a .pth file or define $PYTHONPATH
+to extend the path.
+Refer to the README file in xcb/proto for more info.
+''')
+ raise
+
+# Parse the xml header
+module = Module(args[0], output)
+
+# Build type-registry and resolve type dependencies
+module.register()
+module.resolve()
+
+# Output the code
+module.generate()
diff --git a/libxcb/src/config.h b/libxcb/src/config.h new file mode 100644 index 000000000..6c701936c --- /dev/null +++ b/libxcb/src/config.h @@ -0,0 +1,80 @@ +/* src/config.h.in. Generated from configure.ac by autoheader. */ + +/* Defined if GCC supports the visibility feature */ +#undef GCC_HAS_VISIBILITY + +/* Has Wraphelp.c needed for XDM AUTH protocols */ +#undef HASXDMAUTH + +/* Define if your platform supports abstract sockets */ +#undef HAVE_ABSTRACT_SOCKETS + +/* Define to 1 if you have the <dlfcn.h> header file. */ +#undef HAVE_DLFCN_H + +/* Define to 1 if you have the <inttypes.h> header file. */ +#undef HAVE_INTTYPES_H + +/* launchd support available */ +#undef HAVE_LAUNCHD + +/* Define to 1 if you have the <memory.h> header file. */ +#undef HAVE_MEMORY_H + +/* Have the sockaddr_un.sun_len member. */ +#undef HAVE_SOCKADDR_SUN_LEN + +/* Define to 1 if you have the <stdint.h> header file. */ +#undef HAVE_STDINT_H + +/* Define to 1 if you have the <stdlib.h> header file. */ +#undef HAVE_STDLIB_H + +/* Define to 1 if you have the <strings.h> header file. */ +#undef HAVE_STRINGS_H + +/* Define to 1 if you have the <string.h> header file. */ +#undef HAVE_STRING_H + +/* Define to 1 if you have the <sys/stat.h> header file. */ +#undef HAVE_SYS_STAT_H + +/* Define to 1 if you have the <sys/types.h> header file. */ +#undef HAVE_SYS_TYPES_H + +/* Define to 1 if you have the <unistd.h> header file. */ +#define HAVE_UNISTD_H + +/* Define to the sub-directory in which libtool stores uninstalled libraries. + */ +#undef LT_OBJDIR + +/* Name of package */ +#undef PACKAGE + +/* Define to the address where bug reports for this package should be sent. */ +#undef PACKAGE_BUGREPORT + +/* Define to the full name of this package. */ +#undef PACKAGE_NAME + +/* Define to the full name and version of this package. */ +#undef PACKAGE_STRING + +/* Define to the one symbol short name of this package. */ +#undef PACKAGE_TARNAME + +/* Define to the version of this package. */ +#undef PACKAGE_VERSION + +/* Define to 1 if you have the ANSI C header files. */ +#undef STDC_HEADERS + +/* poll() function is available */ +#undef USE_POLL + +/* Version number of package */ +#undef VERSION + +/* XCB buffer queue size */ +#define XCB_QUEUE_BUFFER_SIZE 4096 diff --git a/libxcb/src/dummyin6.h b/libxcb/src/dummyin6.h new file mode 100644 index 000000000..b86b250e4 --- /dev/null +++ b/libxcb/src/dummyin6.h @@ -0,0 +1,168 @@ +/* + * Copyright (c) 2001, 2003 Motoyuki Kasahara + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef DUMMYIN6_H +#define DUMMYIN6_H + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <sys/types.h> + +#include <sys/socket.h> +#include <netinet/in.h> +#include <netdb.h> + +#ifndef AF_INET6 +#define AF_INET6 (AF_INET + 1) +#endif + +#ifndef PF_INET6 +#define PF_INET6 (PF_INET + 1) +#endif + +#ifndef AF_UNSPEC +#define AF_UNSPEC AF_INET +#endif + +#ifndef PF_UNSPEC +#define PF_UNSPEC PF_INET +#endif + +#ifndef INET6_ADDRSTRLEN +#define INET6_ADDRSTRLEN 46 +#endif + +#ifndef INET_ADDRSTRLEN +#define INET_ADDRSTRLEN 16 +#endif + +#ifndef HAVE_STRUCT_IN6_ADDR +struct in6_addr { + unsigned char s6_addr[16]; +}; +#endif + +#ifndef HAVE_STRUCT_SOCKADDR_IN6 +struct sockaddr_in6 { + sa_family_t sin6_family; + in_port_t sin6_port; + unsigned long sin6_flowinfo; + struct in6_addr sin6_addr; + unsigned long sin6_scope_id; +}; +#endif + +#if !defined(HAVE_STRUCT_SOCKADDR_STORAGE) && !defined(sockaddr_storage) +#define sockaddr_storage sockaddr_in +#endif + +#ifndef IN6ADDR_ANY_DECLARED +extern const struct in6_addr in6addr_any; +#endif + +#ifndef IN6ADDR_LOOPBACK_DECLARED +extern const struct in6_addr in6addr_loopback; +#endif + +#ifndef IN6ADDR_ANY_INIT +#define IN6ADDR_ANY_INIT \ + {{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}} +#endif + +#ifndef IN6ADDR_LOOPBACK_INIT +#define IN6ADDR_LOOPBACK_INIT \ + {{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}} +#endif + +#ifndef IN6_IS_ADDR_UNSPECIFIED +#define IN6_IS_ADDR_UNSPECIFIED(a) \ + ( (a)->s6_addr[ 0] == 0 && (a)->s6_addr[ 1] == 0 \ + && (a)->s6_addr[ 2] == 0 && (a)->s6_addr[ 3] == 0 \ + && (a)->s6_addr[ 4] == 0 && (a)->s6_addr[ 5] == 0 \ + && (a)->s6_addr[ 6] == 0 && (a)->s6_addr[ 7] == 0 \ + && (a)->s6_addr[ 8] == 0 && (a)->s6_addr[ 9] == 0 \ + && (a)->s6_addr[10] == 0 && (a)->s6_addr[11] == 0 \ + && (a)->s6_addr[12] == 0 && (a)->s6_addr[13] == 0 \ + && (a)->s6_addr[14] == 0 && (a)->s6_addr[15] == 0) +#endif + +#ifndef IN6_IS_ADDR_LOOPBACK +#define IN6_IS_ADDR_LOOPBACK(a) \ + ( (a)->s6_addr[ 0] == 0 && (a)->s6_addr[ 1] == 0 \ + && (a)->s6_addr[ 2] == 0 && (a)->s6_addr[ 3] == 0 \ + && (a)->s6_addr[ 4] == 0 && (a)->s6_addr[ 5] == 0 \ + && (a)->s6_addr[ 6] == 0 && (a)->s6_addr[ 7] == 0 \ + && (a)->s6_addr[ 8] == 0 && (a)->s6_addr[ 9] == 0 \ + && (a)->s6_addr[10] == 0 && (a)->s6_addr[11] == 0 \ + && (a)->s6_addr[12] == 0 && (a)->s6_addr[13] == 0 \ + && (a)->s6_addr[14] == 0 && (a)->s6_addr[15] == 1) +#endif + +#ifndef IN6_IS_ADDR_MULTICAST +#define IN6_IS_ADDR_MULTICAST(a) \ + ((a)->s6_addr[0] == 0xff) +#endif + +#ifndef IN6_IS_ADDR_LINKLOCAL +#define IN6_IS_ADDR_LINKLOCAL(a) \ + (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80)) +#endif + +#ifndef IN6_IS_ADDR_SITELOCAL +#define IN6_IS_ADDR_SITELOCAL(a) \ + (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0)) +#endif + +#ifndef IN6_IS_ADDR_V4MAPPED +#define IN6_IS_ADDR_V4MAPPED(a) \ + ( (a)->s6_addr[ 0] == 0 && (a)->s6_addr[ 1] == 0 \ + && (a)->s6_addr[ 2] == 0 && (a)->s6_addr[ 3] == 0 \ + && (a)->s6_addr[ 4] == 0 && (a)->s6_addr[ 5] == 0 \ + && (a)->s6_addr[ 6] == 0 && (a)->s6_addr[ 7] == 0 \ + && (a)->s6_addr[ 8] == 0 && (a)->s6_addr[ 9] == 0 \ + && (a)->s6_addr[10] == 0xff && (a)->s6_addr[11] == 0xff) +#endif + +#ifndef IN6_IS_ADDR_V4COMPAT +#define IN6_IS_ADDR_V4COMPAT(a) \ + ( (a)->s6_addr[ 0] == 0 && (a)->s6_addr[ 1] == 0 \ + && (a)->s6_addr[ 2] == 0 && (a)->s6_addr[ 3] == 0 \ + && (a)->s6_addr[ 4] == 0 && (a)->s6_addr[ 5] == 0 \ + && (a)->s6_addr[ 6] == 0 && (a)->s6_addr[ 7] == 0 \ + && (a)->s6_addr[ 8] == 0 && (a)->s6_addr[ 9] == 0 \ + && (a)->s6_addr[10] == 0 && (a)->s6_addr[11] == 0 \ + && ((a)->s6_addr[12] != 0 || (a)->s6_addr[13] != 0 \ + || (a)->s6_addr[14] != 0 \ + || ((a)->s6_addr[15] != 0 && (a)->s6_addr[15] != 1))) +#endif + +#endif /* not DUMMYIN6_H */ diff --git a/libxcb/src/makefile b/libxcb/src/makefile new file mode 100644 index 000000000..97705cc24 --- /dev/null +++ b/libxcb/src/makefile @@ -0,0 +1,22 @@ + +LIBRARY=libxcb + +CSRCS = \ + xcb_conn.c xcb_out.c xcb_in.c xcb_ext.c xcb_xid.c \ + xcb_list.c xcb_util.c xcb_auth.c + +DEFINES += PTW32_STATIC_LIB + +XCBPROTO_XCBINCLUDEDIR = ..\xcb-proto\src + +XMLFILES := $(notdir $(wildcard $(XCBPROTO_XCBINCLUDEDIR)\*.xml)) +XMLFILES := $(filter-out xkb.xml, $(XMLFILES)) + +EXTSOURCES := $(XMLFILES:%.xml=%.c) +CSRCS += $(EXTSOURCES) + +EXTHEADERS = $(XMLFILES:%.xml=%.h) + +$(EXTHEADERS) $(EXTSOURCES): c_client.py + +load_makefile NORELDBG=1 makefile.srcs diff --git a/libxcb/src/makefile.srcs b/libxcb/src/makefile.srcs new file mode 100644 index 000000000..2d4846a89 --- /dev/null +++ b/libxcb/src/makefile.srcs @@ -0,0 +1,13 @@ +ifneq ($(NORELDBG),1) +$(error NORELDBG should have been set to 1) +endif + +XCBPROTO_XCBPYTHONDIR = ..\xcb-proto +XCBPROTO_XCBINCLUDEDIR = ..\xcb-proto\src + +%.h: $(XCBPROTO_XCBINCLUDEDIR)\%.xml + python c_client.py -p $(XCBPROTO_XCBPYTHONDIR) $< + +%.c: $(XCBPROTO_XCBINCLUDEDIR)\%.xml + python c_client.py -p $(XCBPROTO_XCBPYTHONDIR) $< + diff --git a/libxcb/src/xcb.h b/libxcb/src/xcb.h index 3ee7965d2..cfe311ecf 100644 --- a/libxcb/src/xcb.h +++ b/libxcb/src/xcb.h @@ -1,507 +1,507 @@ -/* - * Copyright (C) 2001-2006 Bart Massey, Jamey Sharp, and Josh Triplett. - * All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - * - * Except as contained in this notice, the names of the authors or their - * institutions shall not be used in advertising or otherwise to promote the - * sale, use or other dealings in this Software without prior written - * authorization from the authors. - */ - -#ifndef __XCB_H__ -#define __XCB_H__ -#include <sys/types.h> - -#if defined(__solaris__) -#include <inttypes.h> -#else -#include <stdint.h> -#endif - -#ifndef _WIN32 -#include <sys/uio.h> -#else -#include "xcb_windefs.h" -#endif -#include <pthread.h> - - -#ifdef __cplusplus -extern "C" { -#endif - -/** - * @file xcb.h - */ - -/** - * @defgroup XCB_Core_API XCB Core API - * @brief Core API of the XCB library. - * - * @{ - */ - -/* Pre-defined constants */ - -/** Current protocol version */ -#define X_PROTOCOL 11 - -/** Current minor version */ -#define X_PROTOCOL_REVISION 0 - -/** X_TCP_PORT + display number = server port for TCP transport */ -#define X_TCP_PORT 6000 - -#define XCB_TYPE_PAD(T,I) (-(I) & (sizeof(T) > 4 ? 3 : sizeof(T) - 1)) - -/* Opaque structures */ - -/** - * @brief XCB Connection structure. - * - * A structure that contain all data that XCB needs to communicate with an X server. - */ -typedef struct xcb_connection_t xcb_connection_t; /**< Opaque structure containing all data that XCB needs to communicate with an X server. */ - - -/* Other types */ - -/** - * @brief Generic iterator. - * - * A generic iterator structure. - */ -typedef struct { - void *data; /**< Data of the current iterator */ - int rem; /**< remaining elements */ - int index; /**< index of the current iterator */ -} xcb_generic_iterator_t; - -/** - * @brief Generic reply. - * - * A generic reply structure. - */ -typedef struct { - uint8_t response_type; /**< Type of the response */ - uint8_t pad0; /**< Padding */ - uint16_t sequence; /**< Sequence number */ - uint32_t length; /**< Length of the response */ -} xcb_generic_reply_t; - -/** - * @brief Generic event. - * - * A generic event structure. - */ -typedef struct { - uint8_t response_type; /**< Type of the response */ - uint8_t pad0; /**< Padding */ - uint16_t sequence; /**< Sequence number */ - uint32_t pad[7]; /**< Padding */ - uint32_t full_sequence; /**< full sequence */ -} xcb_generic_event_t; - -/** - * @brief GE event - * - * An event as sent by the XGE extension. The length field specifies the - * number of 4-byte blocks trailing the struct. - */ -typedef struct { - uint8_t response_type; /**< Type of the response */ - uint8_t pad0; /**< Padding */ - uint16_t sequence; /**< Sequence number */ - uint32_t length; - uint16_t event_type; - uint16_t pad1; - uint32_t pad[5]; /**< Padding */ - uint32_t full_sequence; /**< full sequence */ -} xcb_ge_event_t; - -/** - * @brief Generic error. - * - * A generic error structure. - */ -typedef struct { - uint8_t response_type; /**< Type of the response */ - uint8_t error_code; /**< Error code */ - uint16_t sequence; /**< Sequence number */ - uint32_t resource_id; /** < Resource ID for requests with side effects only */ - uint16_t minor_code; /** < Minor opcode of the failed request */ - uint8_t major_code; /** < Major opcode of the failed request */ - uint8_t pad0; - uint32_t pad[5]; /**< Padding */ - uint32_t full_sequence; /**< full sequence */ -} xcb_generic_error_t; - -/** - * @brief Generic cookie. - * - * A generic cookie structure. - */ -typedef struct { - unsigned int sequence; /**< Sequence number */ -} xcb_void_cookie_t; - - -/* Include the generated xproto header. */ -#include "xproto.h" - - -/** XCB_NONE is the universal null resource or null atom parameter value for many core X requests */ -#define XCB_NONE 0L - -/** XCB_COPY_FROM_PARENT can be used for many xcb_create_window parameters */ -#define XCB_COPY_FROM_PARENT 0L - -/** XCB_CURRENT_TIME can be used in most requests that take an xcb_timestamp_t */ -#define XCB_CURRENT_TIME 0L - -/** XCB_NO_SYMBOL fills in unused entries in xcb_keysym_t tables */ -#define XCB_NO_SYMBOL 0L - - -/* xcb_auth.c */ - -/** - * @brief Container for authorization information. - * - * A container for authorization information to be sent to the X server. - */ -typedef struct xcb_auth_info_t { - int namelen; /**< Length of the string name (as returned by strlen). */ - char *name; /**< String containing the authentication protocol name, such as "MIT-MAGIC-COOKIE-1" or "XDM-AUTHORIZATION-1". */ - int datalen; /**< Length of the data member. */ - char *data; /**< Data interpreted in a protocol-specific manner. */ -} xcb_auth_info_t; - - -/* xcb_out.c */ - -/** - * @brief Forces any buffered output to be written to the server. - * @param c: The connection to the X server. - * @return > @c 0 on success, <= @c 0 otherwise. - * - * Forces any buffered output to be written to the server. Blocks - * until the write is complete. - */ -int xcb_flush(xcb_connection_t *c); - -/** - * @brief Returns the maximum request length that this server accepts. - * @param c: The connection to the X server. - * @return The maximum request length field. - * - * In the absence of the BIG-REQUESTS extension, returns the - * maximum request length field from the connection setup data, which - * may be as much as 65535. If the server supports BIG-REQUESTS, then - * the maximum request length field from the reply to the - * BigRequestsEnable request will be returned instead. - * - * Note that this length is measured in four-byte units, making the - * theoretical maximum lengths roughly 256kB without BIG-REQUESTS and - * 16GB with. - */ -uint32_t xcb_get_maximum_request_length(xcb_connection_t *c); - -/** - * @brief Prefetch the maximum request length without blocking. - * @param c: The connection to the X server. - * - * Without blocking, does as much work as possible toward computing - * the maximum request length accepted by the X server. - * - * Invoking this function may cause a call to xcb_big_requests_enable, - * but will not block waiting for the reply. - * xcb_get_maximum_request_length will return the prefetched data - * after possibly blocking while the reply is retrieved. - * - * Note that in order for this function to be fully non-blocking, the - * application must previously have called - * xcb_prefetch_extension_data(c, &xcb_big_requests_id) and the reply - * must have already arrived. - */ -void xcb_prefetch_maximum_request_length(xcb_connection_t *c); - - -/* xcb_in.c */ - -/** - * @brief Returns the next event or error from the server. - * @param c: The connection to the X server. - * @return The next event from the server. - * - * Returns the next event or error from the server, or returns null in - * the event of an I/O error. Blocks until either an event or error - * arrive, or an I/O error occurs. - */ -xcb_generic_event_t *xcb_wait_for_event(xcb_connection_t *c); - -/** - * @brief Returns the next event or error from the server. - * @param c: The connection to the X server. - * error status of the operation. - * @return The next event from the server. - * - * Returns the next event or error from the server, if one is - * available, or returns @c NULL otherwise. If no event is available, that - * might be because an I/O error like connection close occurred while - * attempting to read the next event, in which case the connection is - * shut down when this function returns. - */ -xcb_generic_event_t *xcb_poll_for_event(xcb_connection_t *c); - -/** - * @brief Returns the next event without reading from the connection. - * @param c: The connection to the X server. - * @return The next already queued event from the server. - * - * This is a version of xcb_poll_for_event that only examines the - * event queue for new events. The function doesn't try to read new - * events from the connection if no queued events are found. - * - * This function is useful for callers that know in advance that all - * interesting events have already been read from the connection. For - * example, callers might use xcb_wait_for_reply and be interested - * only of events that preceded a specific reply. - */ -xcb_generic_event_t *xcb_poll_for_queued_event(xcb_connection_t *c); - -/** - * @brief Return the error for a request, or NULL if none can ever arrive. - * @param c: The connection to the X server. - * @param cookie: The request cookie. - * @return The error for the request, or NULL if none can ever arrive. - * - * The xcb_void_cookie_t cookie supplied to this function must have resulted - * from a call to xcb_[request_name]_checked(). This function will block - * until one of two conditions happens. If an error is received, it will be - * returned. If a reply to a subsequent request has already arrived, no error - * can arrive for this request, so this function will return NULL. - * - * Note that this function will perform a sync if needed to ensure that the - * sequence number will advance beyond that provided in cookie; this is a - * convenience to avoid races in determining whether the sync is needed. - */ -xcb_generic_error_t *xcb_request_check(xcb_connection_t *c, xcb_void_cookie_t cookie); - -/** - * @brief Discards the reply for a request. - * @param c: The connection to the X server. - * @param sequence: The request sequence number from a cookie. - * - * Discards the reply for a request. Additionally, any error generated - * by the request is also discarded (unless it was an _unchecked request - * and the error has already arrived). - * - * This function will not block even if the reply is not yet available. - * - * Note that the sequence really does have to come from an xcb cookie; - * this function is not designed to operate on socket-handoff replies. - */ -void xcb_discard_reply(xcb_connection_t *c, unsigned int sequence); - - -/* xcb_ext.c */ - -/** - * @typedef typedef struct xcb_extension_t xcb_extension_t - */ -typedef struct xcb_extension_t xcb_extension_t; /**< Opaque structure used as key for xcb_get_extension_data_t. */ - -/** - * @brief Caches reply information from QueryExtension requests. - * @param c: The connection. - * @param ext: The extension data. - * @return A pointer to the xcb_query_extension_reply_t for the extension. - * - * This function is the primary interface to the "extension cache", - * which caches reply information from QueryExtension - * requests. Invoking this function may cause a call to - * xcb_query_extension to retrieve extension information from the - * server, and may block until extension data is received from the - * server. - * - * The result must not be freed. This storage is managed by the cache - * itself. - */ -const xcb_query_extension_reply_t *xcb_get_extension_data(xcb_connection_t *c, xcb_extension_t *ext); - -/** - * @brief Prefetch of extension data into the extension cache - * @param c: The connection. - * @param ext: The extension data. - * - * This function allows a "prefetch" of extension data into the - * extension cache. Invoking the function may cause a call to - * xcb_query_extension, but will not block waiting for the - * reply. xcb_get_extension_data will return the prefetched data after - * possibly blocking while it is retrieved. - */ -void xcb_prefetch_extension_data(xcb_connection_t *c, xcb_extension_t *ext); - - -/* xcb_conn.c */ - -/** - * @brief Access the data returned by the server. - * @param c: The connection. - * @return A pointer to an xcb_setup_t structure. - * - * Accessor for the data returned by the server when the xcb_connection_t - * was initialized. This data includes - * - the server's required format for images, - * - a list of available visuals, - * - a list of available screens, - * - the server's maximum request length (in the absence of the - * BIG-REQUESTS extension), - * - and other assorted information. - * - * See the X protocol specification for more details. - * - * The result must not be freed. - */ -const xcb_setup_t *xcb_get_setup(xcb_connection_t *c); - -/** - * @brief Access the file descriptor of the connection. - * @param c: The connection. - * @return The file descriptor. - * - * Accessor for the file descriptor that was passed to the - * xcb_connect_to_fd call that returned @p c. - */ -int xcb_get_file_descriptor(xcb_connection_t *c); - -/** - * @brief Test whether the connection has shut down due to a fatal error. - * @param c: The connection. - * @return 1 if the connection is in an error state; 0 otherwise. - * - * Some errors that occur in the context of an xcb_connection_t - * are unrecoverable. When such an error occurs, the - * connection is shut down and further operations on the - * xcb_connection_t have no effect. - * - * @todo Other functions should document the conditions in - * which they shut down the connection. - */ -int xcb_connection_has_error(xcb_connection_t *c); - -/** - * @brief Connects to the X server. - * @param fd: The file descriptor. - * @param auth_info: Authentication data. - * @return A newly allocated xcb_connection_t structure. - * - * Connects to an X server, given the open socket @p fd and the - * xcb_auth_info_t @p auth_info. The file descriptor @p fd is - * bidirectionally connected to an X server. If the connection - * should be unauthenticated, @p auth_info must be @c - * NULL. - */ -xcb_connection_t *xcb_connect_to_fd(int fd, xcb_auth_info_t *auth_info); - -/** - * @brief Closes the connection. - * @param c: The connection. - * - * Closes the file descriptor and frees all memory associated with the - * connection @c c. - */ -void xcb_disconnect(xcb_connection_t *c); - - -/* xcb_util.c */ - -/** - * @brief Parses a display string name in the form documented by X(7x). - * @param name: The name of the display. - * @param host: A pointer to a malloc'd copy of the hostname. - * @param display: A pointer to the display number. - * @param screen: A pointer to the screen number. - * @return 0 on failure, non 0 otherwise. - * - * Parses the display string name @p display_name in the form - * documented by X(7x). Has no side effects on failure. If - * @p displayname is @c NULL or empty, it uses the environment - * variable DISPLAY. @p hostp is a pointer to a newly allocated string - * that contain the host name. @p displayp is set to the display - * number and @p screenp to the preferred screen number. @p screenp - * can be @c NULL. If @p displayname does not contain a screen number, - * it is set to @c 0. - */ -int xcb_parse_display(const char *name, char **host, int *display, int *screen); - -/** - * @brief Connects to the X server. - * @param displayname: The name of the display. - * @param screenp: A pointer to a preferred screen number. - * @return A newly allocated xcb_connection_t structure. - * - * Connects to the X server specified by @p displayname. If @p - * displayname is @c NULL, uses the value of the DISPLAY environment - * variable. If a particular screen on that server is preferred, the - * int pointed to by @p screenp (if not @c NULL) will be set to that - * screen; otherwise the screen will be set to 0. - */ -xcb_connection_t *xcb_connect(const char *displayname, int *screenp); - -/** - * @brief Connects to the X server, using an authorization information. - * @param display: The name of the display. - * @param auth: The authorization information. - * @param screen: A pointer to a preferred screen number. - * @return A newly allocated xcb_connection_t structure. - * - * Connects to the X server specified by @p displayname, using the - * authorization @p auth. If a particular screen on that server is - * preferred, the int pointed to by @p screenp (if not @c NULL) will - * be set to that screen; otherwise @p screenp will be set to 0. - */ -xcb_connection_t *xcb_connect_to_display_with_auth_info(const char *display, xcb_auth_info_t *auth, int *screen); - - -/* xcb_xid.c */ - -/** - * @brief Allocates an XID for a new object. - * @param c: The connection. - * @return A newly allocated XID. - * - * Allocates an XID for a new object. Typically used just prior to - * various object creation functions, such as xcb_create_window. - */ -uint32_t xcb_generate_id(xcb_connection_t *c); - - -/** - * @} - */ - -#ifdef __cplusplus -} -#endif - - -#endif /* __XCB_H__ */ +/*
+ * Copyright (C) 2001-2006 Bart Massey, Jamey Sharp, and Josh Triplett.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the names of the authors or their
+ * institutions shall not be used in advertising or otherwise to promote the
+ * sale, use or other dealings in this Software without prior written
+ * authorization from the authors.
+ */
+
+#ifndef __XCB_H__
+#define __XCB_H__
+#include <sys/types.h>
+
+#if defined(__solaris__)
+#include <inttypes.h>
+#else
+#include <stdint.h>
+#endif
+
+#ifndef _WIN32
+#include <sys/uio.h>
+#else
+#include "xcb_windefs.h"
+#endif
+#include <pthread.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @file xcb.h
+ */
+
+/**
+ * @defgroup XCB_Core_API XCB Core API
+ * @brief Core API of the XCB library.
+ *
+ * @{
+ */
+
+/* Pre-defined constants */
+
+/** Current protocol version */
+#define X_PROTOCOL 11
+
+/** Current minor version */
+#define X_PROTOCOL_REVISION 0
+
+/** X_TCP_PORT + display number = server port for TCP transport */
+#define X_TCP_PORT 6000
+
+#define XCB_TYPE_PAD(T,I) (-(I) & (sizeof(T) > 4 ? 3 : sizeof(T) - 1))
+
+/* Opaque structures */
+
+/**
+ * @brief XCB Connection structure.
+ *
+ * A structure that contain all data that XCB needs to communicate with an X server.
+ */
+typedef struct xcb_connection_t xcb_connection_t; /**< Opaque structure containing all data that XCB needs to communicate with an X server. */
+
+
+/* Other types */
+
+/**
+ * @brief Generic iterator.
+ *
+ * A generic iterator structure.
+ */
+typedef struct {
+ void *data; /**< Data of the current iterator */
+ int rem; /**< remaining elements */
+ int index; /**< index of the current iterator */
+} xcb_generic_iterator_t;
+
+/**
+ * @brief Generic reply.
+ *
+ * A generic reply structure.
+ */
+typedef struct {
+ uint8_t response_type; /**< Type of the response */
+ uint8_t pad0; /**< Padding */
+ uint16_t sequence; /**< Sequence number */
+ uint32_t length; /**< Length of the response */
+} xcb_generic_reply_t;
+
+/**
+ * @brief Generic event.
+ *
+ * A generic event structure.
+ */
+typedef struct {
+ uint8_t response_type; /**< Type of the response */
+ uint8_t pad0; /**< Padding */
+ uint16_t sequence; /**< Sequence number */
+ uint32_t pad[7]; /**< Padding */
+ uint32_t full_sequence; /**< full sequence */
+} xcb_generic_event_t;
+
+/**
+ * @brief GE event
+ *
+ * An event as sent by the XGE extension. The length field specifies the
+ * number of 4-byte blocks trailing the struct.
+ */
+typedef struct {
+ uint8_t response_type; /**< Type of the response */
+ uint8_t pad0; /**< Padding */
+ uint16_t sequence; /**< Sequence number */
+ uint32_t length;
+ uint16_t event_type;
+ uint16_t pad1;
+ uint32_t pad[5]; /**< Padding */
+ uint32_t full_sequence; /**< full sequence */
+} xcb_ge_event_t;
+
+/**
+ * @brief Generic error.
+ *
+ * A generic error structure.
+ */
+typedef struct {
+ uint8_t response_type; /**< Type of the response */
+ uint8_t error_code; /**< Error code */
+ uint16_t sequence; /**< Sequence number */
+ uint32_t resource_id; /** < Resource ID for requests with side effects only */
+ uint16_t minor_code; /** < Minor opcode of the failed request */
+ uint8_t major_code; /** < Major opcode of the failed request */
+ uint8_t pad0;
+ uint32_t pad[5]; /**< Padding */
+ uint32_t full_sequence; /**< full sequence */
+} xcb_generic_error_t;
+
+/**
+ * @brief Generic cookie.
+ *
+ * A generic cookie structure.
+ */
+typedef struct {
+ unsigned int sequence; /**< Sequence number */
+} xcb_void_cookie_t;
+
+
+/* Include the generated xproto header. */
+#include "xproto.h"
+
+
+/** XCB_NONE is the universal null resource or null atom parameter value for many core X requests */
+#define XCB_NONE 0L
+
+/** XCB_COPY_FROM_PARENT can be used for many xcb_create_window parameters */
+#define XCB_COPY_FROM_PARENT 0L
+
+/** XCB_CURRENT_TIME can be used in most requests that take an xcb_timestamp_t */
+#define XCB_CURRENT_TIME 0L
+
+/** XCB_NO_SYMBOL fills in unused entries in xcb_keysym_t tables */
+#define XCB_NO_SYMBOL 0L
+
+
+/* xcb_auth.c */
+
+/**
+ * @brief Container for authorization information.
+ *
+ * A container for authorization information to be sent to the X server.
+ */
+typedef struct xcb_auth_info_t {
+ int namelen; /**< Length of the string name (as returned by strlen). */
+ char *name; /**< String containing the authentication protocol name, such as "MIT-MAGIC-COOKIE-1" or "XDM-AUTHORIZATION-1". */
+ int datalen; /**< Length of the data member. */
+ char *data; /**< Data interpreted in a protocol-specific manner. */
+} xcb_auth_info_t;
+
+
+/* xcb_out.c */
+
+/**
+ * @brief Forces any buffered output to be written to the server.
+ * @param c: The connection to the X server.
+ * @return > @c 0 on success, <= @c 0 otherwise.
+ *
+ * Forces any buffered output to be written to the server. Blocks
+ * until the write is complete.
+ */
+int xcb_flush(xcb_connection_t *c);
+
+/**
+ * @brief Returns the maximum request length that this server accepts.
+ * @param c: The connection to the X server.
+ * @return The maximum request length field.
+ *
+ * In the absence of the BIG-REQUESTS extension, returns the
+ * maximum request length field from the connection setup data, which
+ * may be as much as 65535. If the server supports BIG-REQUESTS, then
+ * the maximum request length field from the reply to the
+ * BigRequestsEnable request will be returned instead.
+ *
+ * Note that this length is measured in four-byte units, making the
+ * theoretical maximum lengths roughly 256kB without BIG-REQUESTS and
+ * 16GB with.
+ */
+uint32_t xcb_get_maximum_request_length(xcb_connection_t *c);
+
+/**
+ * @brief Prefetch the maximum request length without blocking.
+ * @param c: The connection to the X server.
+ *
+ * Without blocking, does as much work as possible toward computing
+ * the maximum request length accepted by the X server.
+ *
+ * Invoking this function may cause a call to xcb_big_requests_enable,
+ * but will not block waiting for the reply.
+ * xcb_get_maximum_request_length will return the prefetched data
+ * after possibly blocking while the reply is retrieved.
+ *
+ * Note that in order for this function to be fully non-blocking, the
+ * application must previously have called
+ * xcb_prefetch_extension_data(c, &xcb_big_requests_id) and the reply
+ * must have already arrived.
+ */
+void xcb_prefetch_maximum_request_length(xcb_connection_t *c);
+
+
+/* xcb_in.c */
+
+/**
+ * @brief Returns the next event or error from the server.
+ * @param c: The connection to the X server.
+ * @return The next event from the server.
+ *
+ * Returns the next event or error from the server, or returns null in
+ * the event of an I/O error. Blocks until either an event or error
+ * arrive, or an I/O error occurs.
+ */
+xcb_generic_event_t *xcb_wait_for_event(xcb_connection_t *c);
+
+/**
+ * @brief Returns the next event or error from the server.
+ * @param c: The connection to the X server.
+ * error status of the operation.
+ * @return The next event from the server.
+ *
+ * Returns the next event or error from the server, if one is
+ * available, or returns @c NULL otherwise. If no event is available, that
+ * might be because an I/O error like connection close occurred while
+ * attempting to read the next event, in which case the connection is
+ * shut down when this function returns.
+ */
+xcb_generic_event_t *xcb_poll_for_event(xcb_connection_t *c);
+
+/**
+ * @brief Returns the next event without reading from the connection.
+ * @param c: The connection to the X server.
+ * @return The next already queued event from the server.
+ *
+ * This is a version of xcb_poll_for_event that only examines the
+ * event queue for new events. The function doesn't try to read new
+ * events from the connection if no queued events are found.
+ *
+ * This function is useful for callers that know in advance that all
+ * interesting events have already been read from the connection. For
+ * example, callers might use xcb_wait_for_reply and be interested
+ * only of events that preceded a specific reply.
+ */
+xcb_generic_event_t *xcb_poll_for_queued_event(xcb_connection_t *c);
+
+/**
+ * @brief Return the error for a request, or NULL if none can ever arrive.
+ * @param c: The connection to the X server.
+ * @param cookie: The request cookie.
+ * @return The error for the request, or NULL if none can ever arrive.
+ *
+ * The xcb_void_cookie_t cookie supplied to this function must have resulted
+ * from a call to xcb_[request_name]_checked(). This function will block
+ * until one of two conditions happens. If an error is received, it will be
+ * returned. If a reply to a subsequent request has already arrived, no error
+ * can arrive for this request, so this function will return NULL.
+ *
+ * Note that this function will perform a sync if needed to ensure that the
+ * sequence number will advance beyond that provided in cookie; this is a
+ * convenience to avoid races in determining whether the sync is needed.
+ */
+xcb_generic_error_t *xcb_request_check(xcb_connection_t *c, xcb_void_cookie_t cookie);
+
+/**
+ * @brief Discards the reply for a request.
+ * @param c: The connection to the X server.
+ * @param sequence: The request sequence number from a cookie.
+ *
+ * Discards the reply for a request. Additionally, any error generated
+ * by the request is also discarded (unless it was an _unchecked request
+ * and the error has already arrived).
+ *
+ * This function will not block even if the reply is not yet available.
+ *
+ * Note that the sequence really does have to come from an xcb cookie;
+ * this function is not designed to operate on socket-handoff replies.
+ */
+void xcb_discard_reply(xcb_connection_t *c, unsigned int sequence);
+
+
+/* xcb_ext.c */
+
+/**
+ * @typedef typedef struct xcb_extension_t xcb_extension_t
+ */
+typedef struct xcb_extension_t xcb_extension_t; /**< Opaque structure used as key for xcb_get_extension_data_t. */
+
+/**
+ * @brief Caches reply information from QueryExtension requests.
+ * @param c: The connection.
+ * @param ext: The extension data.
+ * @return A pointer to the xcb_query_extension_reply_t for the extension.
+ *
+ * This function is the primary interface to the "extension cache",
+ * which caches reply information from QueryExtension
+ * requests. Invoking this function may cause a call to
+ * xcb_query_extension to retrieve extension information from the
+ * server, and may block until extension data is received from the
+ * server.
+ *
+ * The result must not be freed. This storage is managed by the cache
+ * itself.
+ */
+const xcb_query_extension_reply_t *xcb_get_extension_data(xcb_connection_t *c, xcb_extension_t *ext);
+
+/**
+ * @brief Prefetch of extension data into the extension cache
+ * @param c: The connection.
+ * @param ext: The extension data.
+ *
+ * This function allows a "prefetch" of extension data into the
+ * extension cache. Invoking the function may cause a call to
+ * xcb_query_extension, but will not block waiting for the
+ * reply. xcb_get_extension_data will return the prefetched data after
+ * possibly blocking while it is retrieved.
+ */
+void xcb_prefetch_extension_data(xcb_connection_t *c, xcb_extension_t *ext);
+
+
+/* xcb_conn.c */
+
+/**
+ * @brief Access the data returned by the server.
+ * @param c: The connection.
+ * @return A pointer to an xcb_setup_t structure.
+ *
+ * Accessor for the data returned by the server when the xcb_connection_t
+ * was initialized. This data includes
+ * - the server's required format for images,
+ * - a list of available visuals,
+ * - a list of available screens,
+ * - the server's maximum request length (in the absence of the
+ * BIG-REQUESTS extension),
+ * - and other assorted information.
+ *
+ * See the X protocol specification for more details.
+ *
+ * The result must not be freed.
+ */
+const xcb_setup_t *xcb_get_setup(xcb_connection_t *c);
+
+/**
+ * @brief Access the file descriptor of the connection.
+ * @param c: The connection.
+ * @return The file descriptor.
+ *
+ * Accessor for the file descriptor that was passed to the
+ * xcb_connect_to_fd call that returned @p c.
+ */
+int xcb_get_file_descriptor(xcb_connection_t *c);
+
+/**
+ * @brief Test whether the connection has shut down due to a fatal error.
+ * @param c: The connection.
+ * @return 1 if the connection is in an error state; 0 otherwise.
+ *
+ * Some errors that occur in the context of an xcb_connection_t
+ * are unrecoverable. When such an error occurs, the
+ * connection is shut down and further operations on the
+ * xcb_connection_t have no effect.
+ *
+ * @todo Other functions should document the conditions in
+ * which they shut down the connection.
+ */
+int xcb_connection_has_error(xcb_connection_t *c);
+
+/**
+ * @brief Connects to the X server.
+ * @param fd: The file descriptor.
+ * @param auth_info: Authentication data.
+ * @return A newly allocated xcb_connection_t structure.
+ *
+ * Connects to an X server, given the open socket @p fd and the
+ * xcb_auth_info_t @p auth_info. The file descriptor @p fd is
+ * bidirectionally connected to an X server. If the connection
+ * should be unauthenticated, @p auth_info must be @c
+ * NULL.
+ */
+xcb_connection_t *xcb_connect_to_fd(int fd, xcb_auth_info_t *auth_info);
+
+/**
+ * @brief Closes the connection.
+ * @param c: The connection.
+ *
+ * Closes the file descriptor and frees all memory associated with the
+ * connection @c c.
+ */
+void xcb_disconnect(xcb_connection_t *c);
+
+
+/* xcb_util.c */
+
+/**
+ * @brief Parses a display string name in the form documented by X(7x).
+ * @param name: The name of the display.
+ * @param host: A pointer to a malloc'd copy of the hostname.
+ * @param display: A pointer to the display number.
+ * @param screen: A pointer to the screen number.
+ * @return 0 on failure, non 0 otherwise.
+ *
+ * Parses the display string name @p display_name in the form
+ * documented by X(7x). Has no side effects on failure. If
+ * @p displayname is @c NULL or empty, it uses the environment
+ * variable DISPLAY. @p hostp is a pointer to a newly allocated string
+ * that contain the host name. @p displayp is set to the display
+ * number and @p screenp to the preferred screen number. @p screenp
+ * can be @c NULL. If @p displayname does not contain a screen number,
+ * it is set to @c 0.
+ */
+int xcb_parse_display(const char *name, char **host, int *display, int *screen);
+
+/**
+ * @brief Connects to the X server.
+ * @param displayname: The name of the display.
+ * @param screenp: A pointer to a preferred screen number.
+ * @return A newly allocated xcb_connection_t structure.
+ *
+ * Connects to the X server specified by @p displayname. If @p
+ * displayname is @c NULL, uses the value of the DISPLAY environment
+ * variable. If a particular screen on that server is preferred, the
+ * int pointed to by @p screenp (if not @c NULL) will be set to that
+ * screen; otherwise the screen will be set to 0.
+ */
+xcb_connection_t *xcb_connect(const char *displayname, int *screenp);
+
+/**
+ * @brief Connects to the X server, using an authorization information.
+ * @param display: The name of the display.
+ * @param auth: The authorization information.
+ * @param screen: A pointer to a preferred screen number.
+ * @return A newly allocated xcb_connection_t structure.
+ *
+ * Connects to the X server specified by @p displayname, using the
+ * authorization @p auth. If a particular screen on that server is
+ * preferred, the int pointed to by @p screenp (if not @c NULL) will
+ * be set to that screen; otherwise @p screenp will be set to 0.
+ */
+xcb_connection_t *xcb_connect_to_display_with_auth_info(const char *display, xcb_auth_info_t *auth, int *screen);
+
+
+/* xcb_xid.c */
+
+/**
+ * @brief Allocates an XID for a new object.
+ * @param c: The connection.
+ * @return A newly allocated XID.
+ *
+ * Allocates an XID for a new object. Typically used just prior to
+ * various object creation functions, such as xcb_create_window.
+ */
+uint32_t xcb_generate_id(xcb_connection_t *c);
+
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* __XCB_H__ */
diff --git a/libxcb/src/xcb_auth.c b/libxcb/src/xcb_auth.c index a3a7e45b5..5cfa9dc7c 100644 --- a/libxcb/src/xcb_auth.c +++ b/libxcb/src/xcb_auth.c @@ -1,364 +1,365 @@ -/* Copyright (C) 2001-2004 Bart Massey and Jamey Sharp. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - * - * Except as contained in this notice, the names of the authors or their - * institutions shall not be used in advertising or otherwise to promote the - * sale, use or other dealings in this Software without prior written - * authorization from the authors. - */ - -/* Authorization systems for the X protocol. */ - -#include <assert.h> -#include <X11/Xauth.h> -#include <sys/param.h> -#include <unistd.h> -#include <stdlib.h> - -#ifdef _WIN32 -#include "xcb_windefs.h" -#else -#include <sys/socket.h> -#include <netinet/in.h> -#include <sys/un.h> -#endif /* _WIN32 */ - -#include "xcb.h" -#include "xcbint.h" - -#ifdef HASXDMAUTH -#include <X11/Xdmcp.h> -#endif - -enum auth_protos { -#ifdef HASXDMAUTH - AUTH_XA1, -#endif - AUTH_MC1, - N_AUTH_PROTOS -}; - -#define AUTH_PROTO_XDM_AUTHORIZATION "XDM-AUTHORIZATION-1" -#define AUTH_PROTO_MIT_MAGIC_COOKIE "MIT-MAGIC-COOKIE-1" - -static char *authnames[N_AUTH_PROTOS] = { -#ifdef HASXDMAUTH - AUTH_PROTO_XDM_AUTHORIZATION, -#endif - AUTH_PROTO_MIT_MAGIC_COOKIE, -}; - -static int authnameslen[N_AUTH_PROTOS] = { -#ifdef HASXDMAUTH - sizeof(AUTH_PROTO_XDM_AUTHORIZATION) - 1, -#endif - sizeof(AUTH_PROTO_MIT_MAGIC_COOKIE) - 1, -}; - -static size_t memdup(char **dst, void *src, size_t len) -{ - if(len) - *dst = malloc(len); - else - *dst = 0; - if(!*dst) - return 0; - memcpy(*dst, src, len); - return len; -} - -static int authname_match(enum auth_protos kind, char *name, size_t namelen) -{ - if(authnameslen[kind] != namelen) - return 0; - if(memcmp(authnames[kind], name, namelen)) - return 0; - return 1; -} - -#define SIN6_ADDR(s) (&((struct sockaddr_in6 *)s)->sin6_addr) - -static Xauth *get_authptr(struct sockaddr *sockname, int display) -{ - char *addr = 0; - int addrlen = 0; - unsigned short family; - char hostnamebuf[256]; /* big enough for max hostname */ - char dispbuf[40]; /* big enough to hold more than 2^64 base 10 */ - int dispbuflen; - - family = FamilyLocal; /* 256 */ - switch(sockname->sa_family) - { -#ifdef AF_INET6 - case AF_INET6: - addr = (char *) SIN6_ADDR(sockname); - addrlen = sizeof(*SIN6_ADDR(sockname)); - if(!IN6_IS_ADDR_V4MAPPED(SIN6_ADDR(sockname))) - { - if(!IN6_IS_ADDR_LOOPBACK(SIN6_ADDR(sockname))) - family = XCB_FAMILY_INTERNET_6; - break; - } - addr += 12; - /* if v4-mapped, fall through. */ -#endif - case AF_INET: - if(!addr) - addr = (char *) &((struct sockaddr_in *)sockname)->sin_addr; - addrlen = sizeof(((struct sockaddr_in *)sockname)->sin_addr); - if(*(in_addr_t *) addr != htonl(INADDR_LOOPBACK)) - family = XCB_FAMILY_INTERNET; - break; - case AF_UNIX: - break; - default: - return 0; /* cannot authenticate this family */ - } - - dispbuflen = snprintf(dispbuf, sizeof(dispbuf), "%d", display); - if(dispbuflen < 0) - return 0; - /* snprintf may have truncate our text */ - dispbuflen = MIN(dispbuflen, sizeof(dispbuf) - 1); - - if (family == FamilyLocal) { - if (gethostname(hostnamebuf, sizeof(hostnamebuf)) == -1) - return 0; /* do not know own hostname */ - addr = hostnamebuf; - addrlen = strlen(addr); - } - - return XauGetBestAuthByAddr (family, - (unsigned short) addrlen, addr, - (unsigned short) dispbuflen, dispbuf, - N_AUTH_PROTOS, authnames, authnameslen); -} - -#ifdef HASXDMAUTH -static int next_nonce(void) -{ - static int nonce = 0; - static pthread_mutex_t nonce_mutex = PTHREAD_MUTEX_INITIALIZER; - int ret; - pthread_mutex_lock(&nonce_mutex); - ret = nonce++; - pthread_mutex_unlock(&nonce_mutex); - return ret; -} - -static void do_append(char *buf, int *idxp, void *val, size_t valsize) { - memcpy(buf + *idxp, val, valsize); - *idxp += valsize; -} -#endif - -static int compute_auth(xcb_auth_info_t *info, Xauth *authptr, struct sockaddr *sockname) -{ - if (authname_match(AUTH_MC1, authptr->name, authptr->name_length)) { - info->datalen = memdup(&info->data, authptr->data, authptr->data_length); - if(!info->datalen) - return 0; - return 1; - } -#ifdef HASXDMAUTH -#define APPEND(buf,idx,val) do_append((buf),&(idx),&(val),sizeof(val)) - if (authname_match(AUTH_XA1, authptr->name, authptr->name_length)) { - int j; - - info->data = malloc(192 / 8); - if(!info->data) - return 0; - - for (j = 0; j < 8; j++) - info->data[j] = authptr->data[j]; - switch(sockname->sa_family) { - case AF_INET: - /*block*/ { - struct sockaddr_in *si = (struct sockaddr_in *) sockname; - APPEND(info->data, j, si->sin_addr.s_addr); - APPEND(info->data, j, si->sin_port); - } - break; -#ifdef AF_INET6 - case AF_INET6: - /*block*/ { - struct sockaddr_in6 *si6 = (struct sockaddr_in6 *) sockname; - if(IN6_IS_ADDR_V4MAPPED(SIN6_ADDR(sockname))) - { - do_append(info->data, &j, &si6->sin6_addr.s6_addr[12], 4); - APPEND(info->data, j, si6->sin6_port); - } - else - { - /* XDM-AUTHORIZATION-1 does not handle IPv6 correctly. Do the - same thing Xlib does: use all zeroes for the 4-byte address - and 2-byte port number. */ - uint32_t fakeaddr = 0; - uint16_t fakeport = 0; - APPEND(info->data, j, fakeaddr); - APPEND(info->data, j, fakeport); - } - } - break; -#endif - case AF_UNIX: - /*block*/ { - uint32_t fakeaddr = htonl(0xffffffff - next_nonce()); - uint16_t fakeport = htons(getpid()); - APPEND(info->data, j, fakeaddr); - APPEND(info->data, j, fakeport); - } - break; - default: - free(info->data); - return 0; /* do not know how to build this */ - } - { - uint32_t now = htonl(time(0)); - APPEND(info->data, j, now); - } - assert(j <= 192 / 8); - while (j < 192 / 8) - info->data[j++] = 0; - info->datalen = j; - XdmcpWrap ((unsigned char *) info->data, (unsigned char *) authptr->data + 8, (unsigned char *) info->data, info->datalen); - return 1; - } -#undef APPEND -#endif - - return 0; /* Unknown authorization type */ -} - -/* `sockaddr_un.sun_path' typical size usually ranges between 92 and 108 */ -#define INITIAL_SOCKNAME_SLACK 108 - -/* Return a dynamically allocated socket address structure according - to the value returned by either getpeername() or getsockname() - (according to POSIX, applications should not assume a particular - length for `sockaddr_un.sun_path') */ -static struct sockaddr *get_peer_sock_name(int (*socket_func)(int, - struct sockaddr *, - socklen_t *), - int fd) -{ - socklen_t socknamelen = sizeof(struct sockaddr) + INITIAL_SOCKNAME_SLACK; - socklen_t actual_socknamelen = socknamelen; - struct sockaddr *sockname = malloc(socknamelen); - - if (sockname == NULL) - return NULL; - - /* Both getpeername() and getsockname() truncates sockname if - there is not enough space and set the required length in - actual_socknamelen */ - if (socket_func(fd, sockname, &actual_socknamelen) == -1) - goto sock_or_realloc_error; - - if (actual_socknamelen > socknamelen) - { - struct sockaddr *new_sockname = NULL; - socknamelen = actual_socknamelen; - - if ((new_sockname = realloc(sockname, actual_socknamelen)) == NULL) - goto sock_or_realloc_error; - - sockname = new_sockname; - - if (socket_func(fd, sockname, &actual_socknamelen) == -1 || - actual_socknamelen > socknamelen) - goto sock_or_realloc_error; - } - - return sockname; - - sock_or_realloc_error: - free(sockname); - return NULL; -} - -int _xcb_get_auth_info(int fd, xcb_auth_info_t *info, int display) -{ - /* code adapted from Xlib/ConnDis.c, xtrans/Xtranssocket.c, - xtrans/Xtransutils.c */ - struct sockaddr *sockname = NULL; - int gotsockname = 0; - Xauth *authptr = 0; - int ret = 1; - - /* Some systems like hpux or Hurd do not expose peer names - * for UNIX Domain Sockets, but this is irrelevant, - * since compute_auth() ignores the peer name in this - * case anyway.*/ - if ((sockname = get_peer_sock_name(getpeername, fd)) == NULL) - { - if ((sockname = get_peer_sock_name(getsockname, fd)) == NULL) - return 0; /* can only authenticate sockets */ - if (sockname->sa_family != AF_UNIX) - { - free(sockname); - return 0; /* except for AF_UNIX, sockets should have peernames */ - } - gotsockname = 1; - } - - authptr = get_authptr(sockname, display); - if (authptr == 0) - { - free(sockname); - return 0; /* cannot find good auth data */ - } - - info->namelen = memdup(&info->name, authptr->name, authptr->name_length); - if (!info->namelen) - goto no_auth; /* out of memory */ - - if (!gotsockname) - { - free(sockname); - - if ((sockname = get_peer_sock_name(getsockname, fd)) == NULL) - { - free(info->name); - goto no_auth; /* can only authenticate sockets */ - } - } - - ret = compute_auth(info, authptr, sockname); - if(!ret) - { - free(info->name); - goto no_auth; /* cannot build auth record */ - } - - free(sockname); - sockname = NULL; - - XauDisposeAuth(authptr); - return ret; - - no_auth: - free(sockname); - - info->name = 0; - info->namelen = 0; - XauDisposeAuth(authptr); - return 0; -} +/* Copyright (C) 2001-2004 Bart Massey and Jamey Sharp.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the names of the authors or their
+ * institutions shall not be used in advertising or otherwise to promote the
+ * sale, use or other dealings in this Software without prior written
+ * authorization from the authors.
+ */
+
+/* Authorization systems for the X protocol. */
+
+#include <assert.h>
+#include <X11/Xauth.h>
+#include <sys/param.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#ifdef _WIN32
+#include "xcb_windefs.h"
+#else
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <sys/un.h>
+#endif /* _WIN32 */
+
+#include "xcb.h"
+#include "xcbint.h"
+
+#ifdef HASXDMAUTH
+#include <X11/Xdmcp.h>
+#endif
+
+enum auth_protos {
+#ifdef HASXDMAUTH
+ AUTH_XA1,
+#endif
+ AUTH_MC1,
+ N_AUTH_PROTOS
+};
+
+#define AUTH_PROTO_XDM_AUTHORIZATION "XDM-AUTHORIZATION-1"
+#define AUTH_PROTO_MIT_MAGIC_COOKIE "MIT-MAGIC-COOKIE-1"
+
+static char *authnames[N_AUTH_PROTOS] = {
+#ifdef HASXDMAUTH
+ AUTH_PROTO_XDM_AUTHORIZATION,
+#endif
+ AUTH_PROTO_MIT_MAGIC_COOKIE,
+};
+
+static int authnameslen[N_AUTH_PROTOS] = {
+#ifdef HASXDMAUTH
+ sizeof(AUTH_PROTO_XDM_AUTHORIZATION) - 1,
+#endif
+ sizeof(AUTH_PROTO_MIT_MAGIC_COOKIE) - 1,
+};
+
+static size_t memdup(char **dst, void *src, size_t len)
+{
+ if(len)
+ *dst = malloc(len);
+ else
+ *dst = 0;
+ if(!*dst)
+ return 0;
+ memcpy(*dst, src, len);
+ return len;
+}
+
+static int authname_match(enum auth_protos kind, char *name, size_t namelen)
+{
+ if(authnameslen[kind] != namelen)
+ return 0;
+ if(memcmp(authnames[kind], name, namelen))
+ return 0;
+ return 1;
+}
+
+#define SIN6_ADDR(s) (&((struct sockaddr_in6 *)s)->sin6_addr)
+
+static Xauth *get_authptr(struct sockaddr *sockname, int display)
+{
+ char *addr = 0;
+ int addrlen = 0;
+ unsigned short family;
+ char hostnamebuf[256]; /* big enough for max hostname */
+ char dispbuf[40]; /* big enough to hold more than 2^64 base 10 */
+ int dispbuflen;
+
+ family = FamilyLocal; /* 256 */
+ switch(sockname->sa_family)
+ {
+#ifdef AF_INET6
+ case AF_INET6:
+ addr = (char *) SIN6_ADDR(sockname);
+ addrlen = sizeof(*SIN6_ADDR(sockname));
+ if(!IN6_IS_ADDR_V4MAPPED(SIN6_ADDR(sockname)))
+ {
+ if(!IN6_IS_ADDR_LOOPBACK(SIN6_ADDR(sockname)))
+ family = XCB_FAMILY_INTERNET_6;
+ break;
+ }
+ addr += 12;
+ /* if v4-mapped, fall through. */
+#endif
+ case AF_INET:
+ if(!addr)
+ addr = (char *) &((struct sockaddr_in *)sockname)->sin_addr;
+ addrlen = sizeof(((struct sockaddr_in *)sockname)->sin_addr);
+ if(*(in_addr_t *) addr != htonl(INADDR_LOOPBACK))
+ family = XCB_FAMILY_INTERNET;
+ break;
+ case AF_UNIX:
+ break;
+ default:
+ return 0; /* cannot authenticate this family */
+ }
+
+ dispbuflen = snprintf(dispbuf, sizeof(dispbuf), "%d", display);
+ if(dispbuflen < 0)
+ return 0;
+ /* snprintf may have truncate our text */
+ dispbuflen = MIN(dispbuflen, sizeof(dispbuf) - 1);
+
+ if (family == FamilyLocal) {
+ if (gethostname(hostnamebuf, sizeof(hostnamebuf)) == -1)
+ return 0; /* do not know own hostname */
+ addr = hostnamebuf;
+ addrlen = strlen(addr);
+ }
+
+ return XauGetBestAuthByAddr (family,
+ (unsigned short) addrlen, addr,
+ (unsigned short) dispbuflen, dispbuf,
+ N_AUTH_PROTOS, authnames, authnameslen);
+}
+
+#ifdef HASXDMAUTH
+static int next_nonce(void)
+{
+ static int nonce = 0;
+ static pthread_mutex_t nonce_mutex = PTHREAD_MUTEX_INITIALIZER;
+ int ret;
+ pthread_mutex_lock(&nonce_mutex);
+ ret = nonce++;
+ pthread_mutex_unlock(&nonce_mutex);
+ return ret;
+}
+
+static void do_append(char *buf, int *idxp, void *val, size_t valsize) {
+ memcpy(buf + *idxp, val, valsize);
+ *idxp += valsize;
+}
+#endif
+
+static int compute_auth(xcb_auth_info_t *info, Xauth *authptr, struct sockaddr *sockname)
+{
+ if (authname_match(AUTH_MC1, authptr->name, authptr->name_length)) {
+ info->datalen = memdup(&info->data, authptr->data, authptr->data_length);
+ if(!info->datalen)
+ return 0;
+ return 1;
+ }
+#ifdef HASXDMAUTH
+#define APPEND(buf,idx,val) do_append((buf),&(idx),&(val),sizeof(val))
+ if (authname_match(AUTH_XA1, authptr->name, authptr->name_length)) {
+ int j;
+
+ info->data = malloc(192 / 8);
+ if(!info->data)
+ return 0;
+
+ for (j = 0; j < 8; j++)
+ info->data[j] = authptr->data[j];
+ switch(sockname->sa_family) {
+ case AF_INET:
+ /*block*/ {
+ struct sockaddr_in *si = (struct sockaddr_in *) sockname;
+ APPEND(info->data, j, si->sin_addr.s_addr);
+ APPEND(info->data, j, si->sin_port);
+ }
+ break;
+#ifdef AF_INET6
+ case AF_INET6:
+ /*block*/ {
+ struct sockaddr_in6 *si6 = (struct sockaddr_in6 *) sockname;
+ if(IN6_IS_ADDR_V4MAPPED(SIN6_ADDR(sockname)))
+ {
+ do_append(info->data, &j, &si6->sin6_addr.s6_addr[12], 4);
+ APPEND(info->data, j, si6->sin6_port);
+ }
+ else
+ {
+ /* XDM-AUTHORIZATION-1 does not handle IPv6 correctly. Do the
+ same thing Xlib does: use all zeroes for the 4-byte address
+ and 2-byte port number. */
+ uint32_t fakeaddr = 0;
+ uint16_t fakeport = 0;
+ APPEND(info->data, j, fakeaddr);
+ APPEND(info->data, j, fakeport);
+ }
+ }
+ break;
+#endif
+ case AF_UNIX:
+ /*block*/ {
+ uint32_t fakeaddr = htonl(0xffffffff - next_nonce());
+ uint16_t fakeport = htons(getpid());
+ APPEND(info->data, j, fakeaddr);
+ APPEND(info->data, j, fakeport);
+ }
+ break;
+ default:
+ free(info->data);
+ return 0; /* do not know how to build this */
+ }
+ {
+ uint32_t now = htonl(time(0));
+ APPEND(info->data, j, now);
+ }
+ assert(j <= 192 / 8);
+ while (j < 192 / 8)
+ info->data[j++] = 0;
+ info->datalen = j;
+ XdmcpWrap ((unsigned char *) info->data, (unsigned char *) authptr->data + 8, (unsigned char *) info->data, info->datalen);
+ return 1;
+ }
+#undef APPEND
+#endif
+
+ return 0; /* Unknown authorization type */
+}
+
+/* `sockaddr_un.sun_path' typical size usually ranges between 92 and 108 */
+#define INITIAL_SOCKNAME_SLACK 108
+
+#ifndef WIN32
+typedef int (*LPFN_GETPEERNAME)(int,struct sockaddr *,socklen_t *);
+#endif
+/* Return a dynamically allocated socket address structure according
+ to the value returned by either getpeername() or getsockname()
+ (according to POSIX, applications should not assume a particular
+ length for `sockaddr_un.sun_path') */
+static struct sockaddr *get_peer_sock_name(LPFN_GETPEERNAME socket_func,
+ int fd)
+{
+ socklen_t socknamelen = sizeof(struct sockaddr) + INITIAL_SOCKNAME_SLACK;
+ socklen_t actual_socknamelen = socknamelen;
+ struct sockaddr *sockname = malloc(socknamelen);
+
+ if (sockname == NULL)
+ return NULL;
+
+ /* Both getpeername() and getsockname() truncates sockname if
+ there is not enough space and set the required length in
+ actual_socknamelen */
+ if (socket_func(fd, sockname, &actual_socknamelen) == -1)
+ goto sock_or_realloc_error;
+
+ if (actual_socknamelen > socknamelen)
+ {
+ struct sockaddr *new_sockname = NULL;
+ socknamelen = actual_socknamelen;
+
+ if ((new_sockname = realloc(sockname, actual_socknamelen)) == NULL)
+ goto sock_or_realloc_error;
+
+ sockname = new_sockname;
+
+ if (socket_func(fd, sockname, &actual_socknamelen) == -1 ||
+ actual_socknamelen > socknamelen)
+ goto sock_or_realloc_error;
+ }
+
+ return sockname;
+
+ sock_or_realloc_error:
+ free(sockname);
+ return NULL;
+}
+
+int _xcb_get_auth_info(int fd, xcb_auth_info_t *info, int display)
+{
+ /* code adapted from Xlib/ConnDis.c, xtrans/Xtranssocket.c,
+ xtrans/Xtransutils.c */
+ struct sockaddr *sockname = NULL;
+ int gotsockname = 0;
+ Xauth *authptr = 0;
+ int ret = 1;
+
+ /* Some systems like hpux or Hurd do not expose peer names
+ * for UNIX Domain Sockets, but this is irrelevant,
+ * since compute_auth() ignores the peer name in this
+ * case anyway.*/
+ if ((sockname = get_peer_sock_name(getpeername, fd)) == NULL)
+ {
+ if ((sockname = get_peer_sock_name(getsockname, fd)) == NULL)
+ return 0; /* can only authenticate sockets */
+ if (sockname->sa_family != AF_UNIX)
+ {
+ free(sockname);
+ return 0; /* except for AF_UNIX, sockets should have peernames */
+ }
+ gotsockname = 1;
+ }
+
+ authptr = get_authptr(sockname, display);
+ if (authptr == 0)
+ {
+ free(sockname);
+ return 0; /* cannot find good auth data */
+ }
+
+ info->namelen = memdup(&info->name, authptr->name, authptr->name_length);
+ if (!info->namelen)
+ goto no_auth; /* out of memory */
+
+ if (!gotsockname)
+ {
+ free(sockname);
+
+ if ((sockname = get_peer_sock_name(getsockname, fd)) == NULL)
+ {
+ free(info->name);
+ goto no_auth; /* can only authenticate sockets */
+ }
+ }
+
+ ret = compute_auth(info, authptr, sockname);
+ if(!ret)
+ {
+ free(info->name);
+ goto no_auth; /* cannot build auth record */
+ }
+
+ free(sockname);
+ sockname = NULL;
+
+ XauDisposeAuth(authptr);
+ return ret;
+
+ no_auth:
+ free(sockname);
+
+ info->name = 0;
+ info->namelen = 0;
+ XauDisposeAuth(authptr);
+ return 0;
+}
diff --git a/libxcb/src/xcb_conn.c b/libxcb/src/xcb_conn.c index 84a9917d6..4c5b613e7 100644 --- a/libxcb/src/xcb_conn.c +++ b/libxcb/src/xcb_conn.c @@ -48,6 +48,12 @@ #include <netinet/in.h>
#endif /* _WIN32 */
+#include <X11/Xtrans/Xtrans.h>
+
+#ifdef _MSC_VER
+#define _close(fd) closesocket(fd)
+#endif
+
/* SHUT_RDWR is fairly recent and is not available on all platforms */
#if !defined(SHUT_RDWR)
#define SHUT_RDWR 2
@@ -67,7 +73,7 @@ static int set_fd_flags(const int fd) #ifdef _WIN32
u_long iMode = 1; /* non-zero puts it in non-blocking mode, 0 in blocking mode */
- int ret = 0;
+ int ret;
ret = ioctlsocket(fd, FIONBIO, &iMode);
if(ret != 0)
@@ -107,7 +113,7 @@ static int write_setup(xcb_connection_t *c, xcb_auth_info_t *auth_info) out.authorization_protocol_name_len = 0;
out.authorization_protocol_data_len = 0;
parts[count].iov_len = sizeof(xcb_setup_request_t);
- parts[count++].iov_base = &out;
+ parts[count++].iov_base = (caddr_t) &out;
parts[count].iov_len = XCB_PAD(sizeof(xcb_setup_request_t));
parts[count++].iov_base = (char *) pad;
@@ -175,33 +181,48 @@ static int read_setup(xcb_connection_t *c) static int write_vec(xcb_connection_t *c, struct iovec **vector, int *count)
{
int n;
- assert(!c->out.queue_len);
#ifdef _WIN32
int i = 0;
- int ret = 0,err = 0;
+ int cnt=*count;
struct iovec *vec;
n = 0;
+ assert(!c->out.queue_len);
/* Could use the WSASend win32 function for scatter/gather i/o but setting up the WSABUF struct from
an iovec would require more work and I'm not sure of the benefit....works for now */
vec = *vector;
- while(i < *count)
+ while(i < cnt)
{
- ret = send(c->fd,vec->iov_base,vec->iov_len,0);
+ char *p= vec->iov_base;
+ size_t l= vec->iov_len;
+ while (l > 0)
+ {
+ int ret = send(c->fd, p, l, 0);
if(ret == SOCKET_ERROR)
{
- err = WSAGetLastError();
+ int err = WSAGetLastError();
if(err == WSAEWOULDBLOCK)
{
- return 1;
+ if (n)
+ {
+ /* already return the data */
+ i=cnt;
+ break;
+ }
+ else
+ return 1;
}
}
+ p += ret;
+ l -= ret;
n += ret;
- *vec++;
- i++;
+ }
+ vec++;
+ i++;
}
#else
+ assert(!c->out.queue_len);
n = writev(c->fd, *vector, *count);
if(n < 0 && errno == EAGAIN)
return 1;
@@ -376,6 +397,13 @@ int _xcb_conn_wait(xcb_connection_t *c, pthread_cond_t *cond, struct iovec **vec }
#else
ret = select(c->fd + 1, &rfds, &wfds, 0, 0);
+ if (ret==SOCKET_ERROR)
+ {
+ ret=-1;
+ errno = WSAGetLastError();
+ if (errno == WSAEINTR)
+ errno=EINTR;
+ }
#endif
} while (ret == -1 && errno == EINTR);
if(ret < 0)
diff --git a/libxcb/src/xcb_ext.c b/libxcb/src/xcb_ext.c index 68bb29bdf..c79c54de2 100644 --- a/libxcb/src/xcb_ext.c +++ b/libxcb/src/xcb_ext.c @@ -119,6 +119,8 @@ int _xcb_ext_init(xcb_connection_t *c) void _xcb_ext_destroy(xcb_connection_t *c) { + if (!c->ext.lock) + return; /* mutex is not initialised */ pthread_mutex_destroy(&c->ext.lock); while(c->ext.extensions_size-- > 0) if(c->ext.extensions[c->ext.extensions_size].tag == LAZY_FORCED) diff --git a/libxcb/src/xcb_in.c b/libxcb/src/xcb_in.c index 4acc3a27d..e0e7a7cac 100644 --- a/libxcb/src/xcb_in.c +++ b/libxcb/src/xcb_in.c @@ -1,700 +1,706 @@ -/* Copyright (C) 2001-2004 Bart Massey and Jamey Sharp. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - * - * Except as contained in this notice, the names of the authors or their - * institutions shall not be used in advertising or otherwise to promote the - * sale, use or other dealings in this Software without prior written - * authorization from the authors. - */ - -/* Stuff that reads stuff from the server. */ - -#include <assert.h> -#include <string.h> -#include <stdlib.h> -#include <unistd.h> -#include <stdio.h> -#include <errno.h> - -#include "xcb.h" -#include "xcbext.h" -#include "xcbint.h" -#if USE_POLL -#include <poll.h> -#endif -#ifndef _WIN32 -#include <sys/select.h> -#include <sys/socket.h> -#endif - -#ifdef _WIN32 -#include "xcb_windefs.h" -#endif /* _WIN32 */ - -#define XCB_ERROR 0 -#define XCB_REPLY 1 -#define XCB_XGE_EVENT 35 - -/* required for compiling for Win32 using MinGW */ -#ifndef MSG_WAITALL -#define MSG_WAITALL 0 -#endif - -struct event_list { - xcb_generic_event_t *event; - struct event_list *next; -}; - -struct reply_list { - void *reply; - struct reply_list *next; -}; - -typedef struct pending_reply { - uint64_t first_request; - uint64_t last_request; - enum workarounds workaround; - int flags; - struct pending_reply *next; -} pending_reply; - -typedef struct reader_list { - uint64_t request; - pthread_cond_t *data; - struct reader_list *next; -} reader_list; - -static void remove_finished_readers(reader_list **prev_reader, uint64_t completed) -{ - while(*prev_reader && XCB_SEQUENCE_COMPARE((*prev_reader)->request, <=, completed)) - { - /* If you don't have what you're looking for now, you never - * will. Wake up and leave me alone. */ - pthread_cond_signal((*prev_reader)->data); - *prev_reader = (*prev_reader)->next; - } -} - -static int read_packet(xcb_connection_t *c) -{ - xcb_generic_reply_t genrep; - int length = 32; - int eventlength = 0; /* length after first 32 bytes for GenericEvents */ - void *buf; - pending_reply *pend = 0; - struct event_list *event; - - /* Wait for there to be enough data for us to read a whole packet */ - if(c->in.queue_len < length) - return 0; - - /* Get the response type, length, and sequence number. */ - memcpy(&genrep, c->in.queue, sizeof(genrep)); - - /* Compute 32-bit sequence number of this packet. */ - if((genrep.response_type & 0x7f) != XCB_KEYMAP_NOTIFY) - { - uint64_t lastread = c->in.request_read; - c->in.request_read = (lastread & UINT64_C(0xffffffffffff0000)) | genrep.sequence; - if(XCB_SEQUENCE_COMPARE(c->in.request_read, <, lastread)) - c->in.request_read += 0x10000; - if(XCB_SEQUENCE_COMPARE(c->in.request_read, >, c->in.request_expected)) - c->in.request_expected = c->in.request_read; - - if(c->in.request_read != lastread) - { - if(c->in.current_reply) - { - _xcb_map_put(c->in.replies, lastread, c->in.current_reply); - c->in.current_reply = 0; - c->in.current_reply_tail = &c->in.current_reply; - } - c->in.request_completed = c->in.request_read - 1; - } - - while(c->in.pending_replies && - c->in.pending_replies->workaround != WORKAROUND_EXTERNAL_SOCKET_OWNER && - XCB_SEQUENCE_COMPARE (c->in.pending_replies->last_request, <=, c->in.request_completed)) - { - pending_reply *oldpend = c->in.pending_replies; - c->in.pending_replies = oldpend->next; - if(!oldpend->next) - c->in.pending_replies_tail = &c->in.pending_replies; - free(oldpend); - } - - if(genrep.response_type == XCB_ERROR) - c->in.request_completed = c->in.request_read; - - remove_finished_readers(&c->in.readers, c->in.request_completed); - } - - if(genrep.response_type == XCB_ERROR || genrep.response_type == XCB_REPLY) - { - pend = c->in.pending_replies; - if(pend && - !(XCB_SEQUENCE_COMPARE(pend->first_request, <=, c->in.request_read) && - (pend->workaround == WORKAROUND_EXTERNAL_SOCKET_OWNER || - XCB_SEQUENCE_COMPARE(c->in.request_read, <=, pend->last_request)))) - pend = 0; - } - - /* For reply packets, check that the entire packet is available. */ - if(genrep.response_type == XCB_REPLY) - { - if(pend && pend->workaround == WORKAROUND_GLX_GET_FB_CONFIGS_BUG) - { - uint32_t *p = (uint32_t *) c->in.queue; - genrep.length = p[2] * p[3] * 2; - } - length += genrep.length * 4; - } - - /* XGE events may have sizes > 32 */ - if ((genrep.response_type & 0x7f) == XCB_XGE_EVENT) - eventlength = genrep.length * 4; - - buf = malloc(length + eventlength + - (genrep.response_type == XCB_REPLY ? 0 : sizeof(uint32_t))); - if(!buf) - { - _xcb_conn_shutdown(c); - return 0; - } - - if(_xcb_in_read_block(c, buf, length) <= 0) - { - free(buf); - return 0; - } - - /* pull in XGE event data if available, append after event struct */ - if (eventlength) - { - if(_xcb_in_read_block(c, &((xcb_generic_event_t*)buf)[1], eventlength) <= 0) - { - free(buf); - return 0; - } - } - - if(pend && (pend->flags & XCB_REQUEST_DISCARD_REPLY)) - { - free(buf); - return 1; - } - - if(genrep.response_type != XCB_REPLY) - ((xcb_generic_event_t *) buf)->full_sequence = c->in.request_read; - - /* reply, or checked error */ - if( genrep.response_type == XCB_REPLY || - (genrep.response_type == XCB_ERROR && pend && (pend->flags & XCB_REQUEST_CHECKED))) - { - struct reply_list *cur = malloc(sizeof(struct reply_list)); - if(!cur) - { - _xcb_conn_shutdown(c); - free(buf); - return 0; - } - cur->reply = buf; - cur->next = 0; - *c->in.current_reply_tail = cur; - c->in.current_reply_tail = &cur->next; - if(c->in.readers && c->in.readers->request == c->in.request_read) - pthread_cond_signal(c->in.readers->data); - return 1; - } - - /* event, or unchecked error */ - event = malloc(sizeof(struct event_list)); - if(!event) - { - _xcb_conn_shutdown(c); - free(buf); - return 0; - } - event->event = buf; - event->next = 0; - *c->in.events_tail = event; - c->in.events_tail = &event->next; - pthread_cond_signal(&c->in.event_cond); - return 1; /* I have something for you... */ -} - -static xcb_generic_event_t *get_event(xcb_connection_t *c) -{ - struct event_list *cur = c->in.events; - xcb_generic_event_t *ret; - if(!c->in.events) - return 0; - ret = cur->event; - c->in.events = cur->next; - if(!cur->next) - c->in.events_tail = &c->in.events; - free(cur); - return ret; -} - -static void free_reply_list(struct reply_list *head) -{ - while(head) - { - struct reply_list *cur = head; - head = cur->next; - free(cur->reply); - free(cur); - } -} - -static int read_block(const int fd, void *buf, const ssize_t len) -{ - int done = 0; - while(done < len) - { - int ret = recv(fd, ((char *) buf) + done, len - done,MSG_WAITALL); - if(ret > 0) - done += ret; -#ifndef _WIN32 - if(ret < 0 && errno == EAGAIN) -#else - if(ret == SOCKET_ERROR && WSAGetLastError() == WSAEWOULDBLOCK) -#endif /* !_Win32 */ - { -#if USE_POLL - struct pollfd pfd; - pfd.fd = fd; - pfd.events = POLLIN; - pfd.revents = 0; - do { - ret = poll(&pfd, 1, -1); - } while (ret == -1 && errno == EINTR); -#else - fd_set fds; - FD_ZERO(&fds); - FD_SET(fd, &fds); - - /* Initializing errno here makes sure that for Win32 this loop will execute only once */ - errno = 0; - do { - ret = select(fd + 1, &fds, 0, 0, 0); - } while (ret == -1 && errno == EINTR); -#endif /* USE_POLL */ - } - if(ret <= 0) - return ret; - } - return len; -} - -static int poll_for_reply(xcb_connection_t *c, uint64_t request, void **reply, xcb_generic_error_t **error) -{ - struct reply_list *head; - - /* If an error occurred when issuing the request, fail immediately. */ - if(!request) - head = 0; - /* We've read requests past the one we want, so if it has replies we have - * them all and they're in the replies map. */ - else if(XCB_SEQUENCE_COMPARE(request, <, c->in.request_read)) - { - head = _xcb_map_remove(c->in.replies, request); - if(head && head->next) - _xcb_map_put(c->in.replies, request, head->next); - } - /* We're currently processing the responses to the request we want, and we - * have a reply ready to return. So just return it without blocking. */ - else if(request == c->in.request_read && c->in.current_reply) - { - head = c->in.current_reply; - c->in.current_reply = head->next; - if(!head->next) - c->in.current_reply_tail = &c->in.current_reply; - } - /* We know this request can't have any more replies, and we've already - * established it doesn't have a reply now. Don't bother blocking. */ - else if(request == c->in.request_completed) - head = 0; - /* We may have more replies on the way for this request: block until we're - * sure. */ - else - return 0; - - if(error) - *error = 0; - *reply = 0; - - if(head) - { - if(((xcb_generic_reply_t *) head->reply)->response_type == XCB_ERROR) - { - if(error) - *error = head->reply; - else - free(head->reply); - } - else - *reply = head->reply; - - free(head); - } - - return 1; -} - -static void insert_reader(reader_list **prev_reader, reader_list *reader, uint64_t request, pthread_cond_t *cond) -{ - while(*prev_reader && XCB_SEQUENCE_COMPARE((*prev_reader)->request, <=, request)) - prev_reader = &(*prev_reader)->next; - reader->request = request; - reader->data = cond; - reader->next = *prev_reader; - *prev_reader = reader; -} - -static void remove_reader(reader_list **prev_reader, reader_list *reader) -{ - while(*prev_reader && XCB_SEQUENCE_COMPARE((*prev_reader)->request, <=, reader->request)) - if(*prev_reader == reader) - { - *prev_reader = (*prev_reader)->next; - break; - } -} - -static void *wait_for_reply(xcb_connection_t *c, uint64_t request, xcb_generic_error_t **e) -{ - void *ret = 0; - - /* If this request has not been written yet, write it. */ - if(c->out.return_socket || _xcb_out_flush_to(c, request)) - { - pthread_cond_t cond = PTHREAD_COND_INITIALIZER; - reader_list reader; - - insert_reader(&c->in.readers, &reader, request, &cond); - - while(!poll_for_reply(c, request, &ret, e)) - if(!_xcb_conn_wait(c, &cond, 0, 0)) - break; - - remove_reader(&c->in.readers, &reader); - pthread_cond_destroy(&cond); - } - - _xcb_in_wake_up_next_reader(c); - return ret; -} - -static uint64_t widen(xcb_connection_t *c, unsigned int request) -{ - uint64_t widened_request = (c->out.request & UINT64_C(0xffffffff00000000)) | request; - if(widened_request > c->out.request) - widened_request -= UINT64_C(1) << 32; - return widened_request; -} - -/* Public interface */ - -void *xcb_wait_for_reply(xcb_connection_t *c, unsigned int request, xcb_generic_error_t **e) -{ - void *ret; - if(e) - *e = 0; - if(c->has_error) - return 0; - - pthread_mutex_lock(&c->iolock); - ret = wait_for_reply(c, widen(c, request), e); - pthread_mutex_unlock(&c->iolock); - return ret; -} - -static void insert_pending_discard(xcb_connection_t *c, pending_reply **prev_next, uint64_t seq) -{ - pending_reply *pend; - pend = malloc(sizeof(*pend)); - if(!pend) - { - _xcb_conn_shutdown(c); - return; - } - - pend->first_request = seq; - pend->last_request = seq; - pend->workaround = 0; - pend->flags = XCB_REQUEST_DISCARD_REPLY; - pend->next = *prev_next; - *prev_next = pend; - - if(!pend->next) - c->in.pending_replies_tail = &pend->next; -} - -static void discard_reply(xcb_connection_t *c, uint64_t request) -{ - void *reply; - pending_reply **prev_pend; - - /* Free any replies or errors that we've already read. Stop if - * xcb_wait_for_reply would block or we've run out of replies. */ - while(poll_for_reply(c, request, &reply, 0) && reply) - free(reply); - - /* If we've proven there are no more responses coming, we're done. */ - if(XCB_SEQUENCE_COMPARE(request, <=, c->in.request_completed)) - return; - - /* Walk the list of pending requests. Mark the first match for deletion. */ - for(prev_pend = &c->in.pending_replies; *prev_pend; prev_pend = &(*prev_pend)->next) - { - if(XCB_SEQUENCE_COMPARE((*prev_pend)->first_request, >, request)) - break; - - if((*prev_pend)->first_request == request) - { - /* Pending reply found. Mark for discard: */ - (*prev_pend)->flags |= XCB_REQUEST_DISCARD_REPLY; - return; - } - } - - /* Pending reply not found (likely due to _unchecked request). Create one: */ - insert_pending_discard(c, prev_pend, request); -} - -void xcb_discard_reply(xcb_connection_t *c, unsigned int sequence) -{ - if(c->has_error) - return; - - /* If an error occurred when issuing the request, fail immediately. */ - if(!sequence) - return; - - pthread_mutex_lock(&c->iolock); - discard_reply(c, widen(c, sequence)); - pthread_mutex_unlock(&c->iolock); -} - -int xcb_poll_for_reply(xcb_connection_t *c, unsigned int request, void **reply, xcb_generic_error_t **error) -{ - int ret; - if(c->has_error) - { - *reply = 0; - if(error) - *error = 0; - return 1; /* would not block */ - } - assert(reply != 0); - pthread_mutex_lock(&c->iolock); - ret = poll_for_reply(c, widen(c, request), reply, error); - pthread_mutex_unlock(&c->iolock); - return ret; -} - -xcb_generic_event_t *xcb_wait_for_event(xcb_connection_t *c) -{ - xcb_generic_event_t *ret; - if(c->has_error) - return 0; - pthread_mutex_lock(&c->iolock); - /* get_event returns 0 on empty list. */ - while(!(ret = get_event(c))) - if(!_xcb_conn_wait(c, &c->in.event_cond, 0, 0)) - break; - - _xcb_in_wake_up_next_reader(c); - pthread_mutex_unlock(&c->iolock); - return ret; -} - -static xcb_generic_event_t *poll_for_next_event(xcb_connection_t *c, int queued) -{ - xcb_generic_event_t *ret = 0; - if(!c->has_error) - { - pthread_mutex_lock(&c->iolock); - /* FIXME: follow X meets Z architecture changes. */ - ret = get_event(c); - if(!ret && !queued && _xcb_in_read(c)) /* _xcb_in_read shuts down the connection on error */ - ret = get_event(c); - pthread_mutex_unlock(&c->iolock); - } - return ret; -} - -xcb_generic_event_t *xcb_poll_for_event(xcb_connection_t *c) -{ - return poll_for_next_event(c, 0); -} - -xcb_generic_event_t *xcb_poll_for_queued_event(xcb_connection_t *c) -{ - return poll_for_next_event(c, 1); -} - -xcb_generic_error_t *xcb_request_check(xcb_connection_t *c, xcb_void_cookie_t cookie) -{ - uint64_t request; - xcb_generic_error_t *ret = 0; - void *reply; - if(c->has_error) - return 0; - pthread_mutex_lock(&c->iolock); - request = widen(c, cookie.sequence); - if(XCB_SEQUENCE_COMPARE(request, >=, c->in.request_expected) - && XCB_SEQUENCE_COMPARE(request, >, c->in.request_completed)) - { - _xcb_out_send_sync(c); - _xcb_out_flush_to(c, c->out.request); - } - reply = wait_for_reply(c, request, &ret); - assert(!reply); - pthread_mutex_unlock(&c->iolock); - return ret; -} - -/* Private interface */ - -int _xcb_in_init(_xcb_in *in) -{ - if(pthread_cond_init(&in->event_cond, 0)) - return 0; - in->reading = 0; - - in->queue_len = 0; - - in->request_read = 0; - in->request_completed = 0; - - in->replies = _xcb_map_new(); - if(!in->replies) - return 0; - - in->current_reply_tail = &in->current_reply; - in->events_tail = &in->events; - in->pending_replies_tail = &in->pending_replies; - - return 1; -} - -void _xcb_in_destroy(_xcb_in *in) -{ - pthread_cond_destroy(&in->event_cond); - free_reply_list(in->current_reply); - _xcb_map_delete(in->replies, (void (*)(void *)) free_reply_list); - while(in->events) - { - struct event_list *e = in->events; - in->events = e->next; - free(e->event); - free(e); - } - while(in->pending_replies) - { - pending_reply *pend = in->pending_replies; - in->pending_replies = pend->next; - free(pend); - } -} - -void _xcb_in_wake_up_next_reader(xcb_connection_t *c) -{ - int pthreadret; - if(c->in.readers) - pthreadret = pthread_cond_signal(c->in.readers->data); - else - pthreadret = pthread_cond_signal(&c->in.event_cond); - assert(pthreadret == 0); -} - -int _xcb_in_expect_reply(xcb_connection_t *c, uint64_t request, enum workarounds workaround, int flags) -{ - pending_reply *pend = malloc(sizeof(pending_reply)); - assert(workaround != WORKAROUND_NONE || flags != 0); - if(!pend) - { - _xcb_conn_shutdown(c); - return 0; - } - pend->first_request = pend->last_request = request; - pend->workaround = workaround; - pend->flags = flags; - pend->next = 0; - *c->in.pending_replies_tail = pend; - c->in.pending_replies_tail = &pend->next; - return 1; -} - -void _xcb_in_replies_done(xcb_connection_t *c) -{ - struct pending_reply *pend; - if (c->in.pending_replies_tail != &c->in.pending_replies) - { - pend = container_of(c->in.pending_replies_tail, struct pending_reply, next); - if(pend->workaround == WORKAROUND_EXTERNAL_SOCKET_OWNER) - { - pend->last_request = c->out.request; - pend->workaround = WORKAROUND_NONE; - } - } -} - -int _xcb_in_read(xcb_connection_t *c) -{ - int n = recv(c->fd, c->in.queue + c->in.queue_len, sizeof(c->in.queue) - c->in.queue_len,MSG_WAITALL); - if(n > 0) - c->in.queue_len += n; - while(read_packet(c)) - /* empty */; -#ifndef _WIN32 - if((n > 0) || (n < 0 && errno == EAGAIN)) -#else - if((n > 0) || (n < 0 && WSAGetLastError() == WSAEWOULDBLOCK)) -#endif /* !_WIN32 */ - return 1; - _xcb_conn_shutdown(c); - return 0; -} - -int _xcb_in_read_block(xcb_connection_t *c, void *buf, int len) -{ - int done = c->in.queue_len; - if(len < done) - done = len; - - memcpy(buf, c->in.queue, done); - c->in.queue_len -= done; - memmove(c->in.queue, c->in.queue + done, c->in.queue_len); - - if(len > done) - { - int ret = read_block(c->fd, (char *) buf + done, len - done); - if(ret <= 0) - { - _xcb_conn_shutdown(c); - return ret; - } - } - - return len; -} +/* Copyright (C) 2001-2004 Bart Massey and Jamey Sharp.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the names of the authors or their
+ * institutions shall not be used in advertising or otherwise to promote the
+ * sale, use or other dealings in this Software without prior written
+ * authorization from the authors.
+ */
+
+/* Stuff that reads stuff from the server. */
+
+#include <assert.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <errno.h>
+
+#include "xcb.h"
+#include "xcbext.h"
+#include "xcbint.h"
+#if USE_POLL
+#include <poll.h>
+#endif
+#ifndef _WIN32
+#include <sys/select.h>
+#include <sys/socket.h>
+#endif
+
+#ifdef _WIN32
+#include "xcb_windefs.h"
+#endif /* _WIN32 */
+
+#define XCB_ERROR 0
+#define XCB_REPLY 1
+#define XCB_XGE_EVENT 35
+
+#ifdef _MSC_VER
+#ifdef MSG_WAITALL
+#undef MSG_WAITALL
+#endif
+#endif
+
+/* required for compiling for Win32 using MinGW */
+#ifndef MSG_WAITALL
+#define MSG_WAITALL 0
+#endif
+
+struct event_list {
+ xcb_generic_event_t *event;
+ struct event_list *next;
+};
+
+struct reply_list {
+ void *reply;
+ struct reply_list *next;
+};
+
+typedef struct pending_reply {
+ uint64_t first_request;
+ uint64_t last_request;
+ enum workarounds workaround;
+ int flags;
+ struct pending_reply *next;
+} pending_reply;
+
+typedef struct reader_list {
+ uint64_t request;
+ pthread_cond_t *data;
+ struct reader_list *next;
+} reader_list;
+
+static void remove_finished_readers(reader_list **prev_reader, uint64_t completed)
+{
+ while(*prev_reader && XCB_SEQUENCE_COMPARE((*prev_reader)->request, <=, completed))
+ {
+ /* If you don't have what you're looking for now, you never
+ * will. Wake up and leave me alone. */
+ pthread_cond_signal((*prev_reader)->data);
+ *prev_reader = (*prev_reader)->next;
+ }
+}
+
+static int read_packet(xcb_connection_t *c)
+{
+ xcb_generic_reply_t genrep;
+ int length = 32;
+ int eventlength = 0; /* length after first 32 bytes for GenericEvents */
+ void *buf;
+ pending_reply *pend = 0;
+ struct event_list *event;
+
+ /* Wait for there to be enough data for us to read a whole packet */
+ if(c->in.queue_len < length)
+ return 0;
+
+ /* Get the response type, length, and sequence number. */
+ memcpy(&genrep, c->in.queue, sizeof(genrep));
+
+ /* Compute 32-bit sequence number of this packet. */
+ if((genrep.response_type & 0x7f) != XCB_KEYMAP_NOTIFY)
+ {
+ uint64_t lastread = c->in.request_read;
+ c->in.request_read = (lastread & UINT64_C(0xffffffffffff0000)) | genrep.sequence;
+ if(XCB_SEQUENCE_COMPARE(c->in.request_read, <, lastread))
+ c->in.request_read += 0x10000;
+ if(XCB_SEQUENCE_COMPARE(c->in.request_read, >, c->in.request_expected))
+ c->in.request_expected = c->in.request_read;
+
+ if(c->in.request_read != lastread)
+ {
+ if(c->in.current_reply)
+ {
+ _xcb_map_put(c->in.replies, lastread, c->in.current_reply);
+ c->in.current_reply = 0;
+ c->in.current_reply_tail = &c->in.current_reply;
+ }
+ c->in.request_completed = c->in.request_read - 1;
+ }
+
+ while(c->in.pending_replies &&
+ c->in.pending_replies->workaround != WORKAROUND_EXTERNAL_SOCKET_OWNER &&
+ XCB_SEQUENCE_COMPARE (c->in.pending_replies->last_request, <=, c->in.request_completed))
+ {
+ pending_reply *oldpend = c->in.pending_replies;
+ c->in.pending_replies = oldpend->next;
+ if(!oldpend->next)
+ c->in.pending_replies_tail = &c->in.pending_replies;
+ free(oldpend);
+ }
+
+ if(genrep.response_type == XCB_ERROR)
+ c->in.request_completed = c->in.request_read;
+
+ remove_finished_readers(&c->in.readers, c->in.request_completed);
+ }
+
+ if(genrep.response_type == XCB_ERROR || genrep.response_type == XCB_REPLY)
+ {
+ pend = c->in.pending_replies;
+ if(pend &&
+ !(XCB_SEQUENCE_COMPARE(pend->first_request, <=, c->in.request_read) &&
+ (pend->workaround == WORKAROUND_EXTERNAL_SOCKET_OWNER ||
+ XCB_SEQUENCE_COMPARE(c->in.request_read, <=, pend->last_request))))
+ pend = 0;
+ }
+
+ /* For reply packets, check that the entire packet is available. */
+ if(genrep.response_type == XCB_REPLY)
+ {
+ if(pend && pend->workaround == WORKAROUND_GLX_GET_FB_CONFIGS_BUG)
+ {
+ uint32_t *p = (uint32_t *) c->in.queue;
+ genrep.length = p[2] * p[3] * 2;
+ }
+ length += genrep.length * 4;
+ }
+
+ /* XGE events may have sizes > 32 */
+ if ((genrep.response_type & 0x7f) == XCB_XGE_EVENT)
+ eventlength = genrep.length * 4;
+
+ buf = malloc(length + eventlength +
+ (genrep.response_type == XCB_REPLY ? 0 : sizeof(uint32_t)));
+ if(!buf)
+ {
+ _xcb_conn_shutdown(c);
+ return 0;
+ }
+
+ if(_xcb_in_read_block(c, buf, length) <= 0)
+ {
+ free(buf);
+ return 0;
+ }
+
+ /* pull in XGE event data if available, append after event struct */
+ if (eventlength)
+ {
+ if(_xcb_in_read_block(c, &((xcb_generic_event_t*)buf)[1], eventlength) <= 0)
+ {
+ free(buf);
+ return 0;
+ }
+ }
+
+ if(pend && (pend->flags & XCB_REQUEST_DISCARD_REPLY))
+ {
+ free(buf);
+ return 1;
+ }
+
+ if(genrep.response_type != XCB_REPLY)
+ ((xcb_generic_event_t *) buf)->full_sequence = c->in.request_read;
+
+ /* reply, or checked error */
+ if( genrep.response_type == XCB_REPLY ||
+ (genrep.response_type == XCB_ERROR && pend && (pend->flags & XCB_REQUEST_CHECKED)))
+ {
+ struct reply_list *cur = malloc(sizeof(struct reply_list));
+ if(!cur)
+ {
+ _xcb_conn_shutdown(c);
+ free(buf);
+ return 0;
+ }
+ cur->reply = buf;
+ cur->next = 0;
+ *c->in.current_reply_tail = cur;
+ c->in.current_reply_tail = &cur->next;
+ if(c->in.readers && c->in.readers->request == c->in.request_read)
+ pthread_cond_signal(c->in.readers->data);
+ return 1;
+ }
+
+ /* event, or unchecked error */
+ event = malloc(sizeof(struct event_list));
+ if(!event)
+ {
+ _xcb_conn_shutdown(c);
+ free(buf);
+ return 0;
+ }
+ event->event = buf;
+ event->next = 0;
+ *c->in.events_tail = event;
+ c->in.events_tail = &event->next;
+ pthread_cond_signal(&c->in.event_cond);
+ return 1; /* I have something for you... */
+}
+
+static xcb_generic_event_t *get_event(xcb_connection_t *c)
+{
+ struct event_list *cur = c->in.events;
+ xcb_generic_event_t *ret;
+ if(!c->in.events)
+ return 0;
+ ret = cur->event;
+ c->in.events = cur->next;
+ if(!cur->next)
+ c->in.events_tail = &c->in.events;
+ free(cur);
+ return ret;
+}
+
+static void free_reply_list(struct reply_list *head)
+{
+ while(head)
+ {
+ struct reply_list *cur = head;
+ head = cur->next;
+ free(cur->reply);
+ free(cur);
+ }
+}
+
+static int read_block(const int fd, void *buf, const ssize_t len)
+{
+ int done = 0;
+ while(done < len)
+ {
+ int ret = recv(fd, ((char *) buf) + done, len - done,MSG_WAITALL);
+ if(ret > 0)
+ done += ret;
+#ifndef _WIN32
+ if(ret < 0 && errno == EAGAIN)
+#else
+ if(ret == SOCKET_ERROR && WSAGetLastError() == WSAEWOULDBLOCK)
+#endif /* !_Win32 */
+ {
+#if USE_POLL
+ struct pollfd pfd;
+ pfd.fd = fd;
+ pfd.events = POLLIN;
+ pfd.revents = 0;
+ do {
+ ret = poll(&pfd, 1, -1);
+ } while (ret == -1 && errno == EINTR);
+#else
+ fd_set fds;
+ FD_ZERO(&fds);
+ FD_SET(fd, &fds);
+
+ /* Initializing errno here makes sure that for Win32 this loop will execute only once */
+ errno = 0;
+ do {
+ ret = select(fd + 1, &fds, 0, 0, 0);
+ } while (ret == -1 && errno == EINTR);
+#endif /* USE_POLL */
+ }
+ if(ret <= 0)
+ return ret;
+ }
+ return len;
+}
+
+static int poll_for_reply(xcb_connection_t *c, uint64_t request, void **reply, xcb_generic_error_t **error)
+{
+ struct reply_list *head;
+
+ /* If an error occurred when issuing the request, fail immediately. */
+ if(!request)
+ head = 0;
+ /* We've read requests past the one we want, so if it has replies we have
+ * them all and they're in the replies map. */
+ else if(XCB_SEQUENCE_COMPARE(request, <, c->in.request_read))
+ {
+ head = _xcb_map_remove(c->in.replies, request);
+ if(head && head->next)
+ _xcb_map_put(c->in.replies, request, head->next);
+ }
+ /* We're currently processing the responses to the request we want, and we
+ * have a reply ready to return. So just return it without blocking. */
+ else if(request == c->in.request_read && c->in.current_reply)
+ {
+ head = c->in.current_reply;
+ c->in.current_reply = head->next;
+ if(!head->next)
+ c->in.current_reply_tail = &c->in.current_reply;
+ }
+ /* We know this request can't have any more replies, and we've already
+ * established it doesn't have a reply now. Don't bother blocking. */
+ else if(request == c->in.request_completed)
+ head = 0;
+ /* We may have more replies on the way for this request: block until we're
+ * sure. */
+ else
+ return 0;
+
+ if(error)
+ *error = 0;
+ *reply = 0;
+
+ if(head)
+ {
+ if(((xcb_generic_reply_t *) head->reply)->response_type == XCB_ERROR)
+ {
+ if(error)
+ *error = head->reply;
+ else
+ free(head->reply);
+ }
+ else
+ *reply = head->reply;
+
+ free(head);
+ }
+
+ return 1;
+}
+
+static void insert_reader(reader_list **prev_reader, reader_list *reader, uint64_t request, pthread_cond_t *cond)
+{
+ while(*prev_reader && XCB_SEQUENCE_COMPARE((*prev_reader)->request, <=, request))
+ prev_reader = &(*prev_reader)->next;
+ reader->request = request;
+ reader->data = cond;
+ reader->next = *prev_reader;
+ *prev_reader = reader;
+}
+
+static void remove_reader(reader_list **prev_reader, reader_list *reader)
+{
+ while(*prev_reader && XCB_SEQUENCE_COMPARE((*prev_reader)->request, <=, reader->request))
+ if(*prev_reader == reader)
+ {
+ *prev_reader = (*prev_reader)->next;
+ break;
+ }
+}
+
+static void *wait_for_reply(xcb_connection_t *c, uint64_t request, xcb_generic_error_t **e)
+{
+ void *ret = 0;
+
+ /* If this request has not been written yet, write it. */
+ if(c->out.return_socket || _xcb_out_flush_to(c, request))
+ {
+ pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
+ reader_list reader;
+
+ insert_reader(&c->in.readers, &reader, request, &cond);
+
+ while(!poll_for_reply(c, request, &ret, e))
+ if(!_xcb_conn_wait(c, &cond, 0, 0))
+ break;
+
+ remove_reader(&c->in.readers, &reader);
+ pthread_cond_destroy(&cond);
+ }
+
+ _xcb_in_wake_up_next_reader(c);
+ return ret;
+}
+
+static uint64_t widen(xcb_connection_t *c, unsigned int request)
+{
+ uint64_t widened_request = (c->out.request & UINT64_C(0xffffffff00000000)) | request;
+ if(widened_request > c->out.request)
+ widened_request -= UINT64_C(1) << 32;
+ return widened_request;
+}
+
+/* Public interface */
+
+void *xcb_wait_for_reply(xcb_connection_t *c, unsigned int request, xcb_generic_error_t **e)
+{
+ void *ret;
+ if(e)
+ *e = 0;
+ if(c->has_error)
+ return 0;
+
+ pthread_mutex_lock(&c->iolock);
+ ret = wait_for_reply(c, widen(c, request), e);
+ pthread_mutex_unlock(&c->iolock);
+ return ret;
+}
+
+static void insert_pending_discard(xcb_connection_t *c, pending_reply **prev_next, uint64_t seq)
+{
+ pending_reply *pend;
+ pend = malloc(sizeof(*pend));
+ if(!pend)
+ {
+ _xcb_conn_shutdown(c);
+ return;
+ }
+
+ pend->first_request = seq;
+ pend->last_request = seq;
+ pend->workaround = 0;
+ pend->flags = XCB_REQUEST_DISCARD_REPLY;
+ pend->next = *prev_next;
+ *prev_next = pend;
+
+ if(!pend->next)
+ c->in.pending_replies_tail = &pend->next;
+}
+
+static void discard_reply(xcb_connection_t *c, uint64_t request)
+{
+ void *reply;
+ pending_reply **prev_pend;
+
+ /* Free any replies or errors that we've already read. Stop if
+ * xcb_wait_for_reply would block or we've run out of replies. */
+ while(poll_for_reply(c, request, &reply, 0) && reply)
+ free(reply);
+
+ /* If we've proven there are no more responses coming, we're done. */
+ if(XCB_SEQUENCE_COMPARE(request, <=, c->in.request_completed))
+ return;
+
+ /* Walk the list of pending requests. Mark the first match for deletion. */
+ for(prev_pend = &c->in.pending_replies; *prev_pend; prev_pend = &(*prev_pend)->next)
+ {
+ if(XCB_SEQUENCE_COMPARE((*prev_pend)->first_request, >, request))
+ break;
+
+ if((*prev_pend)->first_request == request)
+ {
+ /* Pending reply found. Mark for discard: */
+ (*prev_pend)->flags |= XCB_REQUEST_DISCARD_REPLY;
+ return;
+ }
+ }
+
+ /* Pending reply not found (likely due to _unchecked request). Create one: */
+ insert_pending_discard(c, prev_pend, request);
+}
+
+void xcb_discard_reply(xcb_connection_t *c, unsigned int sequence)
+{
+ if(c->has_error)
+ return;
+
+ /* If an error occurred when issuing the request, fail immediately. */
+ if(!sequence)
+ return;
+
+ pthread_mutex_lock(&c->iolock);
+ discard_reply(c, widen(c, sequence));
+ pthread_mutex_unlock(&c->iolock);
+}
+
+int xcb_poll_for_reply(xcb_connection_t *c, unsigned int request, void **reply, xcb_generic_error_t **error)
+{
+ int ret;
+ if(c->has_error)
+ {
+ *reply = 0;
+ if(error)
+ *error = 0;
+ return 1; /* would not block */
+ }
+ assert(reply != 0);
+ pthread_mutex_lock(&c->iolock);
+ ret = poll_for_reply(c, widen(c, request), reply, error);
+ pthread_mutex_unlock(&c->iolock);
+ return ret;
+}
+
+xcb_generic_event_t *xcb_wait_for_event(xcb_connection_t *c)
+{
+ xcb_generic_event_t *ret;
+ if(c->has_error)
+ return 0;
+ pthread_mutex_lock(&c->iolock);
+ /* get_event returns 0 on empty list. */
+ while(!(ret = get_event(c)))
+ if(!_xcb_conn_wait(c, &c->in.event_cond, 0, 0))
+ break;
+
+ _xcb_in_wake_up_next_reader(c);
+ pthread_mutex_unlock(&c->iolock);
+ return ret;
+}
+
+static xcb_generic_event_t *poll_for_next_event(xcb_connection_t *c, int queued)
+{
+ xcb_generic_event_t *ret = 0;
+ if(!c->has_error)
+ {
+ pthread_mutex_lock(&c->iolock);
+ /* FIXME: follow X meets Z architecture changes. */
+ ret = get_event(c);
+ if(!ret && !queued && _xcb_in_read(c)) /* _xcb_in_read shuts down the connection on error */
+ ret = get_event(c);
+ pthread_mutex_unlock(&c->iolock);
+ }
+ return ret;
+}
+
+xcb_generic_event_t *xcb_poll_for_event(xcb_connection_t *c)
+{
+ return poll_for_next_event(c, 0);
+}
+
+xcb_generic_event_t *xcb_poll_for_queued_event(xcb_connection_t *c)
+{
+ return poll_for_next_event(c, 1);
+}
+
+xcb_generic_error_t *xcb_request_check(xcb_connection_t *c, xcb_void_cookie_t cookie)
+{
+ uint64_t request;
+ xcb_generic_error_t *ret = 0;
+ void *reply;
+ if(c->has_error)
+ return 0;
+ pthread_mutex_lock(&c->iolock);
+ request = widen(c, cookie.sequence);
+ if(XCB_SEQUENCE_COMPARE(request, >=, c->in.request_expected)
+ && XCB_SEQUENCE_COMPARE(request, >, c->in.request_completed))
+ {
+ _xcb_out_send_sync(c);
+ _xcb_out_flush_to(c, c->out.request);
+ }
+ reply = wait_for_reply(c, request, &ret);
+ assert(!reply);
+ pthread_mutex_unlock(&c->iolock);
+ return ret;
+}
+
+/* Private interface */
+
+int _xcb_in_init(_xcb_in *in)
+{
+ if(pthread_cond_init(&in->event_cond, 0))
+ return 0;
+ in->reading = 0;
+
+ in->queue_len = 0;
+
+ in->request_read = 0;
+ in->request_completed = 0;
+
+ in->replies = _xcb_map_new();
+ if(!in->replies)
+ return 0;
+
+ in->current_reply_tail = &in->current_reply;
+ in->events_tail = &in->events;
+ in->pending_replies_tail = &in->pending_replies;
+
+ return 1;
+}
+
+void _xcb_in_destroy(_xcb_in *in)
+{
+ pthread_cond_destroy(&in->event_cond);
+ free_reply_list(in->current_reply);
+ _xcb_map_delete(in->replies, (void (*)(void *)) free_reply_list);
+ while(in->events)
+ {
+ struct event_list *e = in->events;
+ in->events = e->next;
+ free(e->event);
+ free(e);
+ }
+ while(in->pending_replies)
+ {
+ pending_reply *pend = in->pending_replies;
+ in->pending_replies = pend->next;
+ free(pend);
+ }
+}
+
+void _xcb_in_wake_up_next_reader(xcb_connection_t *c)
+{
+ int pthreadret;
+ if(c->in.readers)
+ pthreadret = pthread_cond_signal(c->in.readers->data);
+ else
+ pthreadret = pthread_cond_signal(&c->in.event_cond);
+ assert(pthreadret == 0);
+}
+
+int _xcb_in_expect_reply(xcb_connection_t *c, uint64_t request, enum workarounds workaround, int flags)
+{
+ pending_reply *pend = malloc(sizeof(pending_reply));
+ assert(workaround != WORKAROUND_NONE || flags != 0);
+ if(!pend)
+ {
+ _xcb_conn_shutdown(c);
+ return 0;
+ }
+ pend->first_request = pend->last_request = request;
+ pend->workaround = workaround;
+ pend->flags = flags;
+ pend->next = 0;
+ *c->in.pending_replies_tail = pend;
+ c->in.pending_replies_tail = &pend->next;
+ return 1;
+}
+
+void _xcb_in_replies_done(xcb_connection_t *c)
+{
+ struct pending_reply *pend;
+ if (c->in.pending_replies_tail != &c->in.pending_replies)
+ {
+ pend = container_of(c->in.pending_replies_tail, struct pending_reply, next);
+ if(pend->workaround == WORKAROUND_EXTERNAL_SOCKET_OWNER)
+ {
+ pend->last_request = c->out.request;
+ pend->workaround = WORKAROUND_NONE;
+ }
+ }
+}
+
+int _xcb_in_read(xcb_connection_t *c)
+{
+ int n = recv(c->fd, c->in.queue + c->in.queue_len, sizeof(c->in.queue) - c->in.queue_len,MSG_WAITALL);
+ if(n > 0)
+ c->in.queue_len += n;
+ while(read_packet(c))
+ /* empty */;
+#ifndef _WIN32
+ if((n > 0) || (n < 0 && errno == EAGAIN))
+#else
+ if((n > 0) || (n < 0 && WSAGetLastError() == WSAEWOULDBLOCK))
+#endif /* !_WIN32 */
+ return 1;
+ _xcb_conn_shutdown(c);
+ return 0;
+}
+
+int _xcb_in_read_block(xcb_connection_t *c, void *buf, int len)
+{
+ int done = c->in.queue_len;
+ if(len < done)
+ done = len;
+
+ memcpy(buf, c->in.queue, done);
+ c->in.queue_len -= done;
+ memmove(c->in.queue, c->in.queue + done, c->in.queue_len);
+
+ if(len > done)
+ {
+ int ret = read_block(c->fd, (char *) buf + done, len - done);
+ if(ret <= 0)
+ {
+ _xcb_conn_shutdown(c);
+ return ret;
+ }
+ }
+
+ return len;
+}
diff --git a/libxcb/src/xcb_out.c b/libxcb/src/xcb_out.c index 4f27de116..0e105fffe 100644 --- a/libxcb/src/xcb_out.c +++ b/libxcb/src/xcb_out.c @@ -29,13 +29,14 @@ #include <stdlib.h>
#include <unistd.h>
#include <string.h>
+#include <X11/Xtrans/Xtrans.h>
#include "xcb.h"
#include "xcbext.h"
#include "xcbint.h"
#include "bigreq.h"
-static inline void send_request(xcb_connection_t *c, int isvoid, enum workarounds workaround, int flags, struct iovec *vector, int count)
+static __inline void send_request(xcb_connection_t *c, int isvoid, enum workarounds workaround, int flags, struct iovec *vector, int count)
{
if(c->has_error)
return;
@@ -213,10 +214,10 @@ unsigned int xcb_send_request(xcb_connection_t *c, int flags, struct iovec *vect {
prefix[0] = ((uint32_t *) vector[0].iov_base)[0];
prefix[1] = ++longlen;
- vector[0].iov_base = (uint32_t *) vector[0].iov_base + 1;
+ vector[0].iov_base = (caddr_t)((uint32_t *) vector[0].iov_base + 1);
vector[0].iov_len -= sizeof(uint32_t);
--vector, ++veclen;
- vector[0].iov_base = prefix;
+ vector[0].iov_base = (caddr_t)prefix;
vector[0].iov_len = sizeof(prefix);
}
}
diff --git a/libxcb/src/xcb_util.c b/libxcb/src/xcb_util.c index fde4f85f1..b999ea528 100644 --- a/libxcb/src/xcb_util.c +++ b/libxcb/src/xcb_util.c @@ -1,419 +1,448 @@ -/* Copyright (C) 2001-2004 Bart Massey and Jamey Sharp. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - * - * Except as contained in this notice, the names of the authors or their - * institutions shall not be used in advertising or otherwise to promote the - * sale, use or other dealings in this Software without prior written - * authorization from the authors. - */ - -/* Utility functions implementable using only public APIs. */ - -#include <assert.h> -#include <sys/types.h> -#include <limits.h> -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> -#include <stddef.h> -#include <unistd.h> -#include <string.h> - -#ifdef _WIN32 -#include "xcb_windefs.h" -#else -#include <sys/socket.h> -#include <sys/un.h> -#include <netinet/in.h> -#include <netinet/tcp.h> -#include <fcntl.h> -#include <netdb.h> -#endif /* _WIN32 */ - -#include "xcb.h" -#include "xcbext.h" -#include "xcbint.h" - -/* must be after "xcbint.h" to get autoconf #defines */ -#if defined(HAVE_TSOL_LABEL_H) && defined(HAVE_IS_SYSTEM_LABELED) -# include <tsol/label.h> -# include <sys/stat.h> -#endif - -int xcb_popcount(uint32_t mask) -{ - uint32_t y; - y = (mask >> 1) & 033333333333; - y = mask - y - ((y >> 1) & 033333333333); - return ((y + (y >> 3)) & 030707070707) % 077; -} - -int xcb_sumof(uint8_t *list, int len) -{ - int i, s = 0; - for(i=0; i<len; i++) { - s += *list; - list++; - } - return s; -} - -static int _xcb_parse_display(const char *name, char **host, char **protocol, - int *displayp, int *screenp) -{ - int len, display, screen; - char *slash, *colon, *dot, *end; - - if(!name || !*name) - name = getenv("DISPLAY"); - if(!name) - return 0; - -#ifdef HAVE_LAUNCHD - if(strncmp(name, "/tmp/launch", 11) == 0) - slash = NULL; - else -#endif - slash = strrchr(name, '/'); - - if (slash) { - len = slash - name; - if (protocol) { - *protocol = malloc(len + 1); - if(!*protocol) - return 0; - memcpy(*protocol, name, len); - (*protocol)[len] = '\0'; - } - name = slash + 1; - } else - if (protocol) - *protocol = NULL; - - colon = strrchr(name, ':'); - if(!colon) - goto error_out; - len = colon - name; - ++colon; - display = strtoul(colon, &dot, 10); - if(dot == colon) - goto error_out; - if(*dot == '\0') - screen = 0; - else - { - if(*dot != '.') - goto error_out; - ++dot; - screen = strtoul(dot, &end, 10); - if(end == dot || *end != '\0') - goto error_out; - } - /* At this point, the display string is fully parsed and valid, but - * the caller's memory is untouched. */ - - *host = malloc(len + 1); - if(!*host) - goto error_out; - memcpy(*host, name, len); - (*host)[len] = '\0'; - *displayp = display; - if(screenp) - *screenp = screen; - return 1; - -error_out: - if (protocol) { - free(*protocol); - *protocol = NULL; - } - - return 0; -} - -int xcb_parse_display(const char *name, char **host, int *displayp, - int *screenp) -{ - return _xcb_parse_display(name, host, NULL, displayp, screenp); -} - -static int _xcb_open_tcp(const char *host, char *protocol, const unsigned short port); -#ifndef _WIN32 -static int _xcb_open_unix(char *protocol, const char *file); -#endif /* !WIN32 */ -#ifdef HAVE_ABSTRACT_SOCKETS -static int _xcb_open_abstract(char *protocol, const char *file, size_t filelen); -#endif - -static int _xcb_open(const char *host, char *protocol, const int display) -{ - int fd; - static const char unix_base[] = "/tmp/.X11-unix/X"; - const char *base = unix_base; - size_t filelen; - char *file = NULL; - int actual_filelen; - -#ifdef HAVE_LAUNCHD - if(strncmp(host, "/tmp/launch", 11) == 0) { - base = host; - host = ""; - protocol = NULL; - } -#endif - - /* If protocol or host is "unix", fall through to Unix socket code below */ - if ((!protocol || (strcmp("unix",protocol) != 0)) && - (*host != '\0') && (strcmp("unix",host) != 0)) - { - /* display specifies TCP */ - unsigned short port = X_TCP_PORT + display; - return _xcb_open_tcp(host, protocol, port); - } - -#ifndef _WIN32 -#if defined(HAVE_TSOL_LABEL_H) && defined(HAVE_IS_SYSTEM_LABELED) - /* Check special path for Unix sockets under Solaris Trusted Extensions */ - if (is_system_labeled()) - { - struct stat sbuf; - const char *tsol_base = "/var/tsol/doors/.X11-unix/X"; - char tsol_socket[PATH_MAX]; - - snprintf(tsol_socket, sizeof(tsol_socket), "%s%d", tsol_base, display); - - if (stat(tsol_socket, &sbuf) == 0) - base = tsol_base; - } -#endif - - filelen = strlen(base) + 1 + sizeof(display) * 3 + 1; - file = malloc(filelen); - if(file == NULL) - return -1; - - /* display specifies Unix socket */ -#ifdef HAVE_LAUNCHD - if(strncmp(base, "/tmp/launch", 11) == 0) - actual_filelen = snprintf(file, filelen, "%s:%d", base, display); - else -#endif - actual_filelen = snprintf(file, filelen, "%s%d", base, display); - if(actual_filelen < 0) - { - free(file); - return -1; - } - /* snprintf may truncate the file */ - filelen = MIN(actual_filelen, filelen - 1); -#ifdef HAVE_ABSTRACT_SOCKETS - fd = _xcb_open_abstract(protocol, file, filelen); - if (fd >= 0 || (errno != ENOENT && errno != ECONNREFUSED)) - { - free(file); - return fd; - } - -#endif - fd = _xcb_open_unix(protocol, file); - free(file); - - return fd; -#endif /* !_WIN32 */ - return -1; /* if control reaches here then something has gone wrong */ -} - -static int _xcb_socket(int family, int type, int proto) -{ - int fd; - -#ifdef SOCK_CLOEXEC - fd = socket(family, type | SOCK_CLOEXEC, proto); - if (fd == -1 && errno == EINVAL) -#endif - { - fd = socket(family, type, proto); -#ifndef _WIN32 - if (fd >= 0) - fcntl(fd, F_SETFD, FD_CLOEXEC); -#endif - } - return fd; -} - - -static int _xcb_open_tcp(const char *host, char *protocol, const unsigned short port) -{ - int fd = -1; - struct addrinfo hints; - char service[6]; /* "65535" with the trailing '\0' */ - struct addrinfo *results, *addr; - char *bracket; - - if (protocol && strcmp("tcp",protocol) && strcmp("inet",protocol) -#ifdef AF_INET6 - && strcmp("inet6",protocol) -#endif - ) - return -1; - - if (*host == '\0') - host = "localhost"; - - memset(&hints, 0, sizeof(hints)); -#ifdef AI_ADDRCONFIG - hints.ai_flags |= AI_ADDRCONFIG; -#endif -#ifdef AI_NUMERICSERV - hints.ai_flags |= AI_NUMERICSERV; -#endif - hints.ai_family = AF_UNSPEC; - hints.ai_socktype = SOCK_STREAM; - -#ifdef AF_INET6 - /* Allow IPv6 addresses enclosed in brackets. */ - if(host[0] == '[' && (bracket = strrchr(host, ']')) && bracket[1] == '\0') - { - *bracket = '\0'; - ++host; - hints.ai_flags |= AI_NUMERICHOST; - hints.ai_family = AF_INET6; - } -#endif - - snprintf(service, sizeof(service), "%hu", port); - if(getaddrinfo(host, service, &hints, &results)) - /* FIXME: use gai_strerror, and fill in error connection */ - return -1; - - for(addr = results; addr; addr = addr->ai_next) - { - fd = _xcb_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); - if(fd >= 0) { - int on = 1; - setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on)); - setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &on, sizeof(on)); - - if (connect(fd, addr->ai_addr, addr->ai_addrlen) >= 0) - break; - close(fd); - fd = -1; - } - } - freeaddrinfo(results); - return fd; -} - -#ifndef _WIN32 -static int _xcb_open_unix(char *protocol, const char *file) -{ - int fd; - struct sockaddr_un addr; - - if (protocol && strcmp("unix",protocol)) - return -1; - - strcpy(addr.sun_path, file); - addr.sun_family = AF_UNIX; -#ifdef HAVE_SOCKADDR_SUN_LEN - addr.sun_len = SUN_LEN(&addr); -#endif - fd = _xcb_socket(AF_UNIX, SOCK_STREAM, 0); - if(fd == -1) - return -1; - if(connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1) { - close(fd); - return -1; - } - return fd; -} -#endif /* !_WIN32 */ - -#ifdef HAVE_ABSTRACT_SOCKETS -static int _xcb_open_abstract(char *protocol, const char *file, size_t filelen) -{ - int fd; - struct sockaddr_un addr = {0}; - socklen_t namelen; - - if (protocol && strcmp("unix",protocol)) - return -1; - - strcpy(addr.sun_path + 1, file); - addr.sun_family = AF_UNIX; - namelen = offsetof(struct sockaddr_un, sun_path) + 1 + filelen; -#ifdef HAVE_SOCKADDR_SUN_LEN - addr.sun_len = 1 + filelen; -#endif - fd = _xcb_socket(AF_UNIX, SOCK_STREAM, 0); - if (fd == -1) - return -1; - if (connect(fd, (struct sockaddr *) &addr, namelen) == -1) { - close(fd); - return -1; - } - return fd; -} -#endif - -xcb_connection_t *xcb_connect(const char *displayname, int *screenp) -{ - return xcb_connect_to_display_with_auth_info(displayname, NULL, screenp); -} - -xcb_connection_t *xcb_connect_to_display_with_auth_info(const char *displayname, xcb_auth_info_t *auth, int *screenp) -{ - int fd, display = 0; - char *host = NULL; - char *protocol = NULL; - xcb_auth_info_t ourauth; - xcb_connection_t *c; - - int parsed = _xcb_parse_display(displayname, &host, &protocol, &display, screenp); - - if(!parsed) { - c = (xcb_connection_t *) &error_connection; - goto out; - } else - fd = _xcb_open(host, protocol, display); - - if(fd == -1) { - c = (xcb_connection_t *) &error_connection; - goto out; - } - - if(auth) { - c = xcb_connect_to_fd(fd, auth); - goto out; - } - - if(_xcb_get_auth_info(fd, &ourauth, display)) - { - c = xcb_connect_to_fd(fd, &ourauth); - free(ourauth.name); - free(ourauth.data); - } - else - c = xcb_connect_to_fd(fd, 0); - -out: - free(host); - free(protocol); - return c; -} +/* Copyright (C) 2001-2004 Bart Massey and Jamey Sharp.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the names of the authors or their
+ * institutions shall not be used in advertising or otherwise to promote the
+ * sale, use or other dealings in this Software without prior written
+ * authorization from the authors.
+ */
+
+/* Utility functions implementable using only public APIs. */
+
+#include <assert.h>
+#include <sys/types.h>
+#include <limits.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <string.h>
+
+#ifdef _WIN32
+#include "xcb_windefs.h"
+#else
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <fcntl.h>
+#include <netdb.h>
+#endif /* _WIN32 */
+
+#include "xcb.h"
+#include "xcbext.h"
+#include "xcbint.h"
+
+/* must be after "xcbint.h" to get autoconf #defines */
+#if defined(HAVE_TSOL_LABEL_H) && defined(HAVE_IS_SYSTEM_LABELED)
+# include <tsol/label.h>
+# include <sys/stat.h>
+#endif
+
+#ifdef _MSC_VER
+#ifdef close
+#undef close
+#endif
+#define close(fd) closesocket(fd)
+#endif
+
+int xcb_popcount(uint32_t mask)
+{
+ uint32_t y;
+ y = (mask >> 1) & 033333333333;
+ y = mask - y - ((y >> 1) & 033333333333);
+ return ((y + (y >> 3)) & 030707070707) % 077;
+}
+
+int xcb_sumof(uint8_t *list, int len)
+{
+ int i, s = 0;
+ for(i=0; i<len; i++) {
+ s += *list;
+ list++;
+ }
+ return s;
+}
+
+static int _xcb_parse_display(const char *name, char **host, char **protocol,
+ int *displayp, int *screenp)
+{
+ int len, display, screen;
+ char *slash, *colon, *dot, *end;
+
+ if(!name || !*name)
+ name = getenv("DISPLAY");
+ if(!name)
+ return 0;
+
+#ifdef HAVE_LAUNCHD
+ if(strncmp(name, "/tmp/launch", 11) == 0)
+ slash = NULL;
+ else
+#endif
+ slash = strrchr(name, '/');
+
+ if (slash) {
+ len = slash - name;
+ if (protocol) {
+ *protocol = malloc(len + 1);
+ if(!*protocol)
+ return 0;
+ memcpy(*protocol, name, len);
+ (*protocol)[len] = '\0';
+ }
+ name = slash + 1;
+ } else
+ if (protocol)
+ *protocol = NULL;
+
+ colon = strrchr(name, ':');
+ if(!colon)
+ goto error_out;
+ len = colon - name;
+ ++colon;
+ display = strtoul(colon, &dot, 10);
+ if(dot == colon)
+ goto error_out;
+ if(*dot == '\0')
+ screen = 0;
+ else
+ {
+ if(*dot != '.')
+ goto error_out;
+ ++dot;
+ screen = strtoul(dot, &end, 10);
+ if(end == dot || *end != '\0')
+ goto error_out;
+ }
+ /* At this point, the display string is fully parsed and valid, but
+ * the caller's memory is untouched. */
+
+ *host = malloc(len + 1);
+ if(!*host)
+ goto error_out;
+ memcpy(*host, name, len);
+ (*host)[len] = '\0';
+ *displayp = display;
+ if(screenp)
+ *screenp = screen;
+ return 1;
+
+error_out:
+ if (protocol) {
+ free(*protocol);
+ *protocol = NULL;
+ }
+
+ return 0;
+}
+
+int xcb_parse_display(const char *name, char **host, int *displayp,
+ int *screenp)
+{
+ return _xcb_parse_display(name, host, NULL, displayp, screenp);
+}
+
+static int _xcb_open_tcp(const char *host, char *protocol, const unsigned short port);
+#ifndef _WIN32
+static int _xcb_open_unix(char *protocol, const char *file);
+#endif /* !WIN32 */
+#ifdef HAVE_ABSTRACT_SOCKETS
+static int _xcb_open_abstract(char *protocol, const char *file, size_t filelen);
+#endif
+
+static int _xcb_open(const char *host, char *protocol, const int display)
+{
+ int fd;
+ static const char unix_base[] = "/tmp/.X11-unix/X";
+ const char *base = unix_base;
+ size_t filelen;
+ char *file = NULL;
+ int actual_filelen;
+
+#ifdef HAVE_LAUNCHD
+ if(strncmp(host, "/tmp/launch", 11) == 0) {
+ base = host;
+ host = "";
+ protocol = NULL;
+ }
+#endif
+
+ /* If protocol or host is "unix", fall through to Unix socket code below */
+ if ((!protocol || (strcmp("unix",protocol) != 0)) &&
+ (*host != '\0') && (strcmp("unix",host) != 0))
+ {
+ /* display specifies TCP */
+ unsigned short port = X_TCP_PORT + display;
+ return _xcb_open_tcp(host, protocol, port);
+ }
+
+#ifndef _WIN32
+#if defined(HAVE_TSOL_LABEL_H) && defined(HAVE_IS_SYSTEM_LABELED)
+ /* Check special path for Unix sockets under Solaris Trusted Extensions */
+ if (is_system_labeled())
+ {
+ struct stat sbuf;
+ const char *tsol_base = "/var/tsol/doors/.X11-unix/X";
+ char tsol_socket[PATH_MAX];
+
+ snprintf(tsol_socket, sizeof(tsol_socket), "%s%d", tsol_base, display);
+
+ if (stat(tsol_socket, &sbuf) == 0)
+ base = tsol_base;
+ }
+#endif
+
+ filelen = strlen(base) + 1 + sizeof(display) * 3 + 1;
+ file = malloc(filelen);
+ if(file == NULL)
+ return -1;
+
+ /* display specifies Unix socket */
+#ifdef HAVE_LAUNCHD
+ if(strncmp(base, "/tmp/launch", 11) == 0)
+ actual_filelen = snprintf(file, filelen, "%s:%d", base, display);
+ else
+#endif
+ actual_filelen = snprintf(file, filelen, "%s%d", base, display);
+ if(actual_filelen < 0)
+ {
+ free(file);
+ return -1;
+ }
+ /* snprintf may truncate the file */
+ filelen = MIN(actual_filelen, filelen - 1);
+#ifdef HAVE_ABSTRACT_SOCKETS
+ fd = _xcb_open_abstract(protocol, file, filelen);
+ if (fd >= 0 || (errno != ENOENT && errno != ECONNREFUSED))
+ {
+ free(file);
+ return fd;
+ }
+
+#endif
+ fd = _xcb_open_unix(protocol, file);
+ free(file);
+
+ return fd;
+#endif /* !_WIN32 */
+ return -1; /* if control reaches here then something has gone wrong */
+}
+
+static int _xcb_socket(int family, int type, int proto)
+{
+ int fd;
+
+#ifdef SOCK_CLOEXEC
+ fd = socket(family, type | SOCK_CLOEXEC, proto);
+ if (fd == -1 && errno == EINVAL)
+#endif
+ {
+ fd = socket(family, type, proto);
+#ifndef _WIN32
+ if (fd >= 0)
+ fcntl(fd, F_SETFD, FD_CLOEXEC);
+#endif
+ }
+ return fd;
+}
+
+
+#ifdef WIN32
+int InitWSA(void)
+{
+ static WSADATA wsadata;
+
+ if (!wsadata.wVersion)
+ {
+ ptw32_processInitialize();
+ if (WSAStartup(0x0202, &wsadata))
+ return -1;
+ }
+ return 0;
+}
+#else
+#define InitWSA()
+#endif
+
+static int _xcb_open_tcp(const char *host, char *protocol, const unsigned short port)
+{
+ int fd = -1;
+ struct addrinfo hints;
+ char service[6]; /* "65535" with the trailing '\0' */
+ struct addrinfo *results, *addr;
+ char *bracket;
+
+ if (protocol && strcmp("tcp",protocol) && strcmp("inet",protocol)
+#ifdef AF_INET6
+ && strcmp("inet6",protocol)
+#endif
+ )
+ return -1;
+
+ if (*host == '\0')
+ host = "localhost";
+
+ memset(&hints, 0, sizeof(hints));
+#ifdef AI_ADDRCONFIG
+ hints.ai_flags |= AI_ADDRCONFIG;
+#endif
+#ifdef AI_NUMERICSERV
+ hints.ai_flags |= AI_NUMERICSERV;
+#endif
+ hints.ai_family = AF_UNSPEC;
+ hints.ai_socktype = SOCK_STREAM;
+
+#ifdef AF_INET6
+ /* Allow IPv6 addresses enclosed in brackets. */
+ if(host[0] == '[' && (bracket = strrchr(host, ']')) && bracket[1] == '\0')
+ {
+ *bracket = '\0';
+ ++host;
+ hints.ai_flags |= AI_NUMERICHOST;
+ hints.ai_family = AF_INET6;
+ }
+#endif
+
+#ifdef WIN32
+ if (InitWSA()<0)
+ return -1;
+#endif
+
+ snprintf(service, sizeof(service), "%hu", port);
+ if(getaddrinfo(host, service, &hints, &results))
+ /* FIXME: use gai_strerror, and fill in error connection */
+ return -1;
+
+ for(addr = results; addr; addr = addr->ai_next)
+ {
+ fd = _xcb_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol);
+ if(fd >= 0) {
+ char on = 1;
+ setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on));
+ setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &on, sizeof(on));
+
+ if (connect(fd, addr->ai_addr, addr->ai_addrlen) >= 0)
+ break;
+ close(fd);
+ fd = -1;
+ }
+ }
+ freeaddrinfo(results);
+ return fd;
+}
+
+#ifndef _WIN32
+static int _xcb_open_unix(char *protocol, const char *file)
+{
+ int fd;
+ struct sockaddr_un addr;
+
+ if (protocol && strcmp("unix",protocol))
+ return -1;
+
+ strcpy(addr.sun_path, file);
+ addr.sun_family = AF_UNIX;
+#ifdef HAVE_SOCKADDR_SUN_LEN
+ addr.sun_len = SUN_LEN(&addr);
+#endif
+ fd = _xcb_socket(AF_UNIX, SOCK_STREAM, 0);
+ if(fd == -1)
+ return -1;
+ if(connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1) {
+ close(fd);
+ return -1;
+ }
+ return fd;
+}
+#endif /* !_WIN32 */
+
+#ifdef HAVE_ABSTRACT_SOCKETS
+static int _xcb_open_abstract(char *protocol, const char *file, size_t filelen)
+{
+ int fd;
+ struct sockaddr_un addr = {0};
+ socklen_t namelen;
+
+ if (protocol && strcmp("unix",protocol))
+ return -1;
+
+ strcpy(addr.sun_path + 1, file);
+ addr.sun_family = AF_UNIX;
+ namelen = offsetof(struct sockaddr_un, sun_path) + 1 + filelen;
+#ifdef HAVE_SOCKADDR_SUN_LEN
+ addr.sun_len = 1 + filelen;
+#endif
+ fd = _xcb_socket(AF_UNIX, SOCK_STREAM, 0);
+ if (fd == -1)
+ return -1;
+ if (connect(fd, (struct sockaddr *) &addr, namelen) == -1) {
+ close(fd);
+ return -1;
+ }
+ return fd;
+}
+#endif
+
+xcb_connection_t *xcb_connect(const char *displayname, int *screenp)
+{
+ return xcb_connect_to_display_with_auth_info(displayname, NULL, screenp);
+}
+
+xcb_connection_t *xcb_connect_to_display_with_auth_info(const char *displayname, xcb_auth_info_t *auth, int *screenp)
+{
+ int fd, display = 0;
+ char *host = NULL;
+ char *protocol = NULL;
+ xcb_auth_info_t ourauth;
+ xcb_connection_t *c;
+
+ int parsed = _xcb_parse_display(displayname, &host, &protocol, &display, screenp);
+
+ if(!parsed) {
+ c = (xcb_connection_t *) &error_connection;
+ goto out;
+ } else
+ fd = _xcb_open(host, protocol, display);
+
+ if(fd == -1) {
+ c = (xcb_connection_t *) &error_connection;
+ goto out;
+ }
+
+ if(auth) {
+ c = xcb_connect_to_fd(fd, auth);
+ goto out;
+ }
+
+ if(_xcb_get_auth_info(fd, &ourauth, display))
+ {
+ c = xcb_connect_to_fd(fd, &ourauth);
+ free(ourauth.name);
+ free(ourauth.data);
+ }
+ else
+ c = xcb_connect_to_fd(fd, 0);
+
+out:
+ free(host);
+ free(protocol);
+ return c;
+}
diff --git a/libxcb/src/xcb_windefs.h b/libxcb/src/xcb_windefs.h index a8e9524d6..cba0af3f2 100644 --- a/libxcb/src/xcb_windefs.h +++ b/libxcb/src/xcb_windefs.h @@ -31,15 +31,18 @@ #define WINVER 0x0501 /* required for getaddrinfo/freeaddrinfo defined only for WinXP and above */
#endif
+#define INCL_WINSOCK_API_TYPEDEFS 1 /* Needed for LPFN_GETPEERNAME */
+
+#include <X11/Xwinsock.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#include <windef.h>
-struct iovec {
- void *iov_base; /* Pointer to data. */
- int iov_len; /* Length of data. */
-};
-
typedef unsigned int in_addr_t;
+#define HANDLE void *
+typedef int pid_t;
+
+#define STDERR_FILENO 2
+
#endif /* xcb_windefs.h */
diff --git a/libxcb/src/xcb_xid.c b/libxcb/src/xcb_xid.c index 3df5dbec6..b0de73f21 100644 --- a/libxcb/src/xcb_xid.c +++ b/libxcb/src/xcb_xid.c @@ -93,5 +93,7 @@ int _xcb_xid_init(xcb_connection_t *c) void _xcb_xid_destroy(xcb_connection_t *c) { + if (!c->xid.lock) + return; /* mutex was not initialised yet */ pthread_mutex_destroy(&c->xid.lock); } diff --git a/libxcb/src/xcbint.h b/libxcb/src/xcbint.h index 096576c4a..5950823f0 100644 --- a/libxcb/src/xcbint.h +++ b/libxcb/src/xcbint.h @@ -1,208 +1,208 @@ -/* - * Copyright (C) 2001-2004 Bart Massey and Jamey Sharp. - * All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - * - * Except as contained in this notice, the names of the authors or their - * institutions shall not be used in advertising or otherwise to promote the - * sale, use or other dealings in this Software without prior written - * authorization from the authors. - */ - -#ifndef __XCBINT_H -#define __XCBINT_H - -#include "bigreq.h" - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#ifdef GCC_HAS_VISIBILITY -#pragma GCC visibility push(hidden) -#endif - -enum workarounds { - WORKAROUND_NONE, - WORKAROUND_GLX_GET_FB_CONFIGS_BUG, - WORKAROUND_EXTERNAL_SOCKET_OWNER -}; - -enum lazy_reply_tag -{ - LAZY_NONE = 0, - LAZY_COOKIE, - LAZY_FORCED -}; - -#define XCB_PAD(i) (-(i) & 3) - -#define XCB_SEQUENCE_COMPARE(a,op,b) ((int64_t) ((a) - (b)) op 0) - -#ifndef offsetof -#define offsetof(type,member) ((size_t) &((type *)0)->member) -#endif - -#ifndef MIN -#define MIN(x,y) ((x) < (y) ? (x) : (y)) -#endif - -#define container_of(pointer,type,member) ((type *)(((char *)(pointer)) - offsetof(type, member))) - -/* xcb_list.c */ - -typedef void (*xcb_list_free_func_t)(void *); - -typedef struct _xcb_map _xcb_map; - -_xcb_map *_xcb_map_new(void); -void _xcb_map_delete(_xcb_map *q, xcb_list_free_func_t do_free); -int _xcb_map_put(_xcb_map *q, unsigned int key, void *data); -void *_xcb_map_remove(_xcb_map *q, unsigned int key); - - -/* xcb_out.c */ - -typedef struct _xcb_out { - pthread_cond_t cond; - int writing; - - pthread_cond_t socket_cond; - void (*return_socket)(void *closure); - void *socket_closure; - int socket_moving; - - char queue[XCB_QUEUE_BUFFER_SIZE]; - int queue_len; - - uint64_t request; - uint64_t request_written; - - pthread_mutex_t reqlenlock; - enum lazy_reply_tag maximum_request_length_tag; - union { - xcb_big_requests_enable_cookie_t cookie; - uint32_t value; - } maximum_request_length; -} _xcb_out; - -int _xcb_out_init(_xcb_out *out); -void _xcb_out_destroy(_xcb_out *out); - -int _xcb_out_send(xcb_connection_t *c, struct iovec *vector, int count); -void _xcb_out_send_sync(xcb_connection_t *c); -int _xcb_out_flush_to(xcb_connection_t *c, uint64_t request); - - -/* xcb_in.c */ - -typedef struct _xcb_in { - pthread_cond_t event_cond; - int reading; - - char queue[4096]; - int queue_len; - - uint64_t request_expected; - uint64_t request_read; - uint64_t request_completed; - struct reply_list *current_reply; - struct reply_list **current_reply_tail; - - _xcb_map *replies; - struct event_list *events; - struct event_list **events_tail; - struct reader_list *readers; - - struct pending_reply *pending_replies; - struct pending_reply **pending_replies_tail; -} _xcb_in; - -int _xcb_in_init(_xcb_in *in); -void _xcb_in_destroy(_xcb_in *in); - -void _xcb_in_wake_up_next_reader(xcb_connection_t *c); - -int _xcb_in_expect_reply(xcb_connection_t *c, uint64_t request, enum workarounds workaround, int flags); -void _xcb_in_replies_done(xcb_connection_t *c); - -int _xcb_in_read(xcb_connection_t *c); -int _xcb_in_read_block(xcb_connection_t *c, void *buf, int nread); - - -/* xcb_xid.c */ - -typedef struct _xcb_xid { - pthread_mutex_t lock; - uint32_t last; - uint32_t base; - uint32_t max; - uint32_t inc; -} _xcb_xid; - -int _xcb_xid_init(xcb_connection_t *c); -void _xcb_xid_destroy(xcb_connection_t *c); - - -/* xcb_ext.c */ - -typedef struct _xcb_ext { - pthread_mutex_t lock; - struct lazyreply *extensions; - int extensions_size; -} _xcb_ext; - -int _xcb_ext_init(xcb_connection_t *c); -void _xcb_ext_destroy(xcb_connection_t *c); - - -/* xcb_conn.c */ - -extern const int error_connection; - -struct xcb_connection_t { - int has_error; - - /* constant data */ - xcb_setup_t *setup; - int fd; - - /* I/O data */ - pthread_mutex_t iolock; - _xcb_in in; - _xcb_out out; - - /* misc data */ - _xcb_ext ext; - _xcb_xid xid; -}; - -void _xcb_conn_shutdown(xcb_connection_t *c); -int _xcb_conn_wait(xcb_connection_t *c, pthread_cond_t *cond, struct iovec **vector, int *count); - - -/* xcb_auth.c */ - -int _xcb_get_auth_info(int fd, xcb_auth_info_t *info, int display); - -#ifdef GCC_HAS_VISIBILITY -#pragma GCC visibility pop -#endif - -#endif +/*
+ * Copyright (C) 2001-2004 Bart Massey and Jamey Sharp.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the names of the authors or their
+ * institutions shall not be used in advertising or otherwise to promote the
+ * sale, use or other dealings in this Software without prior written
+ * authorization from the authors.
+ */
+
+#ifndef __XCBINT_H
+#define __XCBINT_H
+
+#include "bigreq.h"
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef GCC_HAS_VISIBILITY
+#pragma GCC visibility push(hidden)
+#endif
+
+enum workarounds {
+ WORKAROUND_NONE,
+ WORKAROUND_GLX_GET_FB_CONFIGS_BUG,
+ WORKAROUND_EXTERNAL_SOCKET_OWNER
+};
+
+enum lazy_reply_tag
+{
+ LAZY_NONE = 0,
+ LAZY_COOKIE,
+ LAZY_FORCED
+};
+
+#define XCB_PAD(i) (-(i) & 3)
+
+#define XCB_SEQUENCE_COMPARE(a,op,b) ((int64_t) ((a) - (b)) op 0)
+
+#ifndef offsetof
+#define offsetof(type,member) ((size_t) &((type *)0)->member)
+#endif
+
+#ifndef MIN
+#define MIN(x,y) ((x) < (y) ? (x) : (y))
+#endif
+
+#define container_of(pointer,type,member) ((type *)(((char *)(pointer)) - offsetof(type, member)))
+
+/* xcb_list.c */
+
+typedef void (*xcb_list_free_func_t)(void *);
+
+typedef struct _xcb_map _xcb_map;
+
+_xcb_map *_xcb_map_new(void);
+void _xcb_map_delete(_xcb_map *q, xcb_list_free_func_t do_free);
+int _xcb_map_put(_xcb_map *q, unsigned int key, void *data);
+void *_xcb_map_remove(_xcb_map *q, unsigned int key);
+
+
+/* xcb_out.c */
+
+typedef struct _xcb_out {
+ pthread_cond_t cond;
+ int writing;
+
+ pthread_cond_t socket_cond;
+ void (*return_socket)(void *closure);
+ void *socket_closure;
+ int socket_moving;
+
+ char queue[XCB_QUEUE_BUFFER_SIZE];
+ int queue_len;
+
+ uint64_t request;
+ uint64_t request_written;
+
+ pthread_mutex_t reqlenlock;
+ enum lazy_reply_tag maximum_request_length_tag;
+ union {
+ xcb_big_requests_enable_cookie_t cookie;
+ uint32_t value;
+ } maximum_request_length;
+} _xcb_out;
+
+int _xcb_out_init(_xcb_out *out);
+void _xcb_out_destroy(_xcb_out *out);
+
+int _xcb_out_send(xcb_connection_t *c, struct iovec *vector, int count);
+void _xcb_out_send_sync(xcb_connection_t *c);
+int _xcb_out_flush_to(xcb_connection_t *c, uint64_t request);
+
+
+/* xcb_in.c */
+
+typedef struct _xcb_in {
+ pthread_cond_t event_cond;
+ int reading;
+
+ char queue[4096];
+ int queue_len;
+
+ uint64_t request_expected;
+ uint64_t request_read;
+ uint64_t request_completed;
+ struct reply_list *current_reply;
+ struct reply_list **current_reply_tail;
+
+ _xcb_map *replies;
+ struct event_list *events;
+ struct event_list **events_tail;
+ struct reader_list *readers;
+
+ struct pending_reply *pending_replies;
+ struct pending_reply **pending_replies_tail;
+} _xcb_in;
+
+int _xcb_in_init(_xcb_in *in);
+void _xcb_in_destroy(_xcb_in *in);
+
+void _xcb_in_wake_up_next_reader(xcb_connection_t *c);
+
+int _xcb_in_expect_reply(xcb_connection_t *c, uint64_t request, enum workarounds workaround, int flags);
+void _xcb_in_replies_done(xcb_connection_t *c);
+
+int _xcb_in_read(xcb_connection_t *c);
+int _xcb_in_read_block(xcb_connection_t *c, void *buf, int nread);
+
+
+/* xcb_xid.c */
+
+typedef struct _xcb_xid {
+ pthread_mutex_t lock;
+ uint32_t last;
+ uint32_t base;
+ uint32_t max;
+ uint32_t inc;
+} _xcb_xid;
+
+int _xcb_xid_init(xcb_connection_t *c);
+void _xcb_xid_destroy(xcb_connection_t *c);
+
+
+/* xcb_ext.c */
+
+typedef struct _xcb_ext {
+ pthread_mutex_t lock;
+ struct lazyreply *extensions;
+ int extensions_size;
+} _xcb_ext;
+
+int _xcb_ext_init(xcb_connection_t *c);
+void _xcb_ext_destroy(xcb_connection_t *c);
+
+
+/* xcb_conn.c */
+
+extern const int error_connection;
+
+struct xcb_connection_t {
+ int has_error;
+
+ /* constant data */
+ xcb_setup_t *setup;
+ int fd;
+
+ /* I/O data */
+ pthread_mutex_t iolock;
+ _xcb_in in;
+ _xcb_out out;
+
+ /* misc data */
+ _xcb_ext ext;
+ _xcb_xid xid;
+};
+
+void _xcb_conn_shutdown(xcb_connection_t *c);
+int _xcb_conn_wait(xcb_connection_t *c, pthread_cond_t *cond, struct iovec **vector, int *count);
+
+
+/* xcb_auth.c */
+
+int _xcb_get_auth_info(int fd, xcb_auth_info_t *info, int display);
+
+#ifdef GCC_HAS_VISIBILITY
+#pragma GCC visibility pop
+#endif
+
+#endif
|