diff options
Diffstat (limited to 'xorg-server/dix/registry.c')
| -rw-r--r-- | xorg-server/dix/registry.c | 675 |
1 files changed, 338 insertions, 337 deletions
diff --git a/xorg-server/dix/registry.c b/xorg-server/dix/registry.c index 7221359b8..aa2edf3e8 100644 --- a/xorg-server/dix/registry.c +++ b/xorg-server/dix/registry.c @@ -1,337 +1,338 @@ -/************************************************************
-
-Author: Eamon Walsh <ewalsh@tycho.nsa.gov>
-
-Permission to use, copy, modify, distribute, and sell this software and its
-documentation for any purpose is hereby granted without fee, provided that
-this permission notice appear in supporting documentation. 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
-AUTHOR 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.
-
-********************************************************/
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#ifdef XREGISTRY
-
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <X11/X.h>
-#include <X11/Xproto.h>
-#include "resource.h"
-#include "registry.h"
-
-#define BASE_SIZE 16
-#define CORE "X11"
-#define FILENAME SERVER_MISC_CONFIG_PATH "/protocol.txt"
-
-#define PROT_COMMENT '#'
-#define PROT_REQUEST 'R'
-#define PROT_EVENT 'V'
-#define PROT_ERROR 'E'
-
-static FILE *fh;
-
-static char ***requests, **events, **errors, **resources;
-static unsigned nmajor, *nminor, nevent, nerror, nresource;
-
-/*
- * File parsing routines
- */
-static int double_size(void *p, unsigned n, unsigned size)
-{
- char **ptr = (char **)p;
- unsigned s, f;
-
- if (n) {
- s = n * size;
- n *= 2 * size;
- f = n;
- } else {
- s = 0;
- n = f = BASE_SIZE * size;
- }
-
- *ptr = realloc(*ptr, n);
- if (!*ptr) {
- dixResetRegistry();
- return FALSE;
- }
- memset(*ptr + s, 0, f - s);
- return TRUE;
-}
-
-static void
-RegisterRequestName(unsigned major, unsigned minor, char *name)
-{
- while (major >= nmajor) {
- if (!double_size(&requests, nmajor, sizeof(char **)))
- return;
- if (!double_size(&nminor, nmajor, sizeof(unsigned)))
- return;
- nmajor = nmajor ? nmajor * 2 : BASE_SIZE;
- }
- while (minor >= nminor[major]) {
- if (!double_size(requests+major, nminor[major], sizeof(char *)))
- return;
- nminor[major] = nminor[major] ? nminor[major] * 2 : BASE_SIZE;
- }
-
- free(requests[major][minor]);
- requests[major][minor] = name;
-}
-
-static void
-RegisterEventName(unsigned event, char *name) {
- while (event >= nevent) {
- if (!double_size(&events, nevent, sizeof(char *)))
- return;
- nevent = nevent ? nevent * 2 : BASE_SIZE;
- }
-
- free(events[event]);
- events[event] = name;
-}
-
-static void
-RegisterErrorName(unsigned error, char *name) {
- while (error >= nerror) {
- if (!double_size(&errors, nerror, sizeof(char *)))
- return;
- nerror = nerror ? nerror * 2 : BASE_SIZE;
- }
-
- free(errors[error]);
- errors[error] = name;
-}
-
-void
-RegisterExtensionNames(ExtensionEntry *extEntry)
-{
- char buf[256], *lineobj, *ptr;
- unsigned offset;
-
- if (fh == NULL)
- return;
-
- rewind(fh);
-
- while (fgets(buf, sizeof(buf), fh)) {
- lineobj = NULL;
- ptr = strchr(buf, '\n');
- if (ptr)
- *ptr = 0;
-
- /* Check for comments or empty lines */
- switch (buf[0]) {
- case PROT_REQUEST:
- case PROT_EVENT:
- case PROT_ERROR:
- break;
- case PROT_COMMENT:
- case '\0':
- continue;
- default:
- goto invalid;
- }
-
- /* Check for space character in the fifth position */
- ptr = strchr(buf, ' ');
- if (!ptr || ptr != buf + 4)
- goto invalid;
-
- /* Duplicate the string after the space */
- lineobj = strdup(ptr + 1);
- if (!lineobj)
- continue;
-
- /* Check for a colon somewhere on the line */
- ptr = strchr(buf, ':');
- if (!ptr)
- goto invalid;
-
- /* Compare the part before colon with the target extension name */
- *ptr = 0;
- if (strcmp(buf + 5, extEntry->name))
- goto skip;
-
- /* Get the opcode for the request, event, or error */
- offset = strtol(buf + 1, &ptr, 10);
- if (offset == 0 && ptr == buf + 1)
- goto invalid;
-
- /* Save the strdup result in the registry */
- switch(buf[0]) {
- case PROT_REQUEST:
- if (extEntry->base)
- RegisterRequestName(extEntry->base, offset, lineobj);
- else
- RegisterRequestName(offset, 0, lineobj);
- continue;
- case PROT_EVENT:
- RegisterEventName(extEntry->eventBase + offset, lineobj);
- continue;
- case PROT_ERROR:
- RegisterErrorName(extEntry->errorBase + offset, lineobj);
- continue;
- }
-
- invalid:
- LogMessage(X_WARNING, "Invalid line in " FILENAME ", skipping\n");
- skip:
- free(lineobj);
- }
-}
-
-/*
- * Registration functions
- */
-
-void
-RegisterResourceName(RESTYPE resource, char *name)
-{
- resource &= TypeMask;
-
- while (resource >= nresource) {
- if (!double_size(&resources, nresource, sizeof(char *)))
- return;
- nresource = nresource ? nresource * 2 : BASE_SIZE;
- }
-
- resources[resource] = name;
-}
-
-/*
- * Lookup functions
- */
-
-const char *
-LookupRequestName(int major, int minor)
-{
- if (major >= nmajor)
- return XREGISTRY_UNKNOWN;
- if (minor >= nminor[major])
- return XREGISTRY_UNKNOWN;
-
- return requests[major][minor] ? requests[major][minor] : XREGISTRY_UNKNOWN;
-}
-
-const char *
-LookupMajorName(int major)
-{
- if (major < 128) {
- const char *retval;
-
- if (major >= nmajor)
- return XREGISTRY_UNKNOWN;
- if (0 >= nminor[major])
- return XREGISTRY_UNKNOWN;
-
- retval = requests[major][0];
- return retval ? retval + sizeof(CORE) : XREGISTRY_UNKNOWN;
- } else {
- ExtensionEntry *extEntry = GetExtensionEntry(major);
- return extEntry ? extEntry->name : XREGISTRY_UNKNOWN;
- }
-}
-
-const char *
-LookupEventName(int event)
-{
- event &= 127;
- if (event >= nevent)
- return XREGISTRY_UNKNOWN;
-
- return events[event] ? events[event] : XREGISTRY_UNKNOWN;
-}
-
-const char *
-LookupErrorName(int error)
-{
- if (error >= nerror)
- return XREGISTRY_UNKNOWN;
-
- return errors[error] ? errors[error] : XREGISTRY_UNKNOWN;
-}
-
-const char *
-LookupResourceName(RESTYPE resource)
-{
- resource &= TypeMask;
- if (resource >= nresource)
- return XREGISTRY_UNKNOWN;
-
- return resources[resource] ? resources[resource] : XREGISTRY_UNKNOWN;
-}
-
-/*
- * Setup and teardown
- */
-void
-dixResetRegistry(void)
-{
- ExtensionEntry extEntry;
-
- /* Free all memory */
- while (nmajor--) {
- while (nminor[nmajor])
- free(requests[nmajor][--nminor[nmajor]]);
- free(requests[nmajor]);
- }
- free(requests);
- free(nminor);
-
- while (nevent--)
- free(events[nevent]);
- free(events);
-
- while (nerror--)
- free(errors[nerror]);
- free(errors);
-
- free(resources);
-
- requests = NULL;
- nminor = NULL;
- events = NULL;
- errors = NULL;
- resources = NULL;
-
- nmajor = nevent = nerror = nresource = 0;
-
- /* Open the protocol file */
- if (fh)
- fclose(fh);
- fh = fopen(FILENAME, "r");
- if (!fh)
- LogMessage(X_WARNING, "Failed to open protocol names file " FILENAME "\n");
-
- /* Add built-in resources */
- RegisterResourceName(RT_NONE, "NONE");
- RegisterResourceName(RT_WINDOW, "WINDOW");
- RegisterResourceName(RT_PIXMAP, "PIXMAP");
- RegisterResourceName(RT_GC, "GC");
- RegisterResourceName(RT_FONT, "FONT");
- RegisterResourceName(RT_CURSOR, "CURSOR");
- RegisterResourceName(RT_COLORMAP, "COLORMAP");
- RegisterResourceName(RT_CMAPENTRY, "COLORMAP ENTRY");
- RegisterResourceName(RT_OTHERCLIENT, "OTHER CLIENT");
- RegisterResourceName(RT_PASSIVEGRAB, "PASSIVE GRAB");
-
- /* Add the core protocol */
- memset(&extEntry, 0, sizeof(extEntry));
- extEntry.name = CORE;
- RegisterExtensionNames(&extEntry);
-}
-
-#endif /* XREGISTRY */
+/************************************************************ + +Author: Eamon Walsh <ewalsh@tycho.nsa.gov> + +Permission to use, copy, modify, distribute, and sell this software and its +documentation for any purpose is hereby granted without fee, provided that +this permission notice appear in supporting documentation. 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 +AUTHOR 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. + +********************************************************/ + +#ifdef HAVE_DIX_CONFIG_H +#include <dix-config.h> +#endif + +#ifdef XREGISTRY + +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <X11/X.h> +#include <X11/Xproto.h> +#include "resource.h" +#include "registry.h" + +#define BASE_SIZE 16 +#define CORE "X11" +#define FILENAME SERVER_MISC_CONFIG_PATH "/protocol.txt" + +#define PROT_COMMENT '#' +#define PROT_REQUEST 'R' +#define PROT_EVENT 'V' +#define PROT_ERROR 'E' + +static FILE *fh; + +static char ***requests, **events, **errors; +static const char **resources; +static unsigned nmajor, *nminor, nevent, nerror, nresource; + +/* + * File parsing routines + */ +static int double_size(void *p, unsigned n, unsigned size) +{ + char **ptr = (char **)p; + unsigned s, f; + + if (n) { + s = n * size; + n *= 2 * size; + f = n; + } else { + s = 0; + n = f = BASE_SIZE * size; + } + + *ptr = realloc(*ptr, n); + if (!*ptr) { + dixResetRegistry(); + return FALSE; + } + memset(*ptr + s, 0, f - s); + return TRUE; +} + +static void +RegisterRequestName(unsigned major, unsigned minor, char *name) +{ + while (major >= nmajor) { + if (!double_size(&requests, nmajor, sizeof(char **))) + return; + if (!double_size(&nminor, nmajor, sizeof(unsigned))) + return; + nmajor = nmajor ? nmajor * 2 : BASE_SIZE; + } + while (minor >= nminor[major]) { + if (!double_size(requests+major, nminor[major], sizeof(char *))) + return; + nminor[major] = nminor[major] ? nminor[major] * 2 : BASE_SIZE; + } + + free(requests[major][minor]); + requests[major][minor] = name; +} + +static void +RegisterEventName(unsigned event, char *name) { + while (event >= nevent) { + if (!double_size(&events, nevent, sizeof(char *))) + return; + nevent = nevent ? nevent * 2 : BASE_SIZE; + } + + free(events[event]); + events[event] = name; +} + +static void +RegisterErrorName(unsigned error, char *name) { + while (error >= nerror) { + if (!double_size(&errors, nerror, sizeof(char *))) + return; + nerror = nerror ? nerror * 2 : BASE_SIZE; + } + + free(errors[error]); + errors[error] = name; +} + +void +RegisterExtensionNames(ExtensionEntry *extEntry) +{ + char buf[256], *lineobj, *ptr; + unsigned offset; + + if (fh == NULL) + return; + + rewind(fh); + + while (fgets(buf, sizeof(buf), fh)) { + lineobj = NULL; + ptr = strchr(buf, '\n'); + if (ptr) + *ptr = 0; + + /* Check for comments or empty lines */ + switch (buf[0]) { + case PROT_REQUEST: + case PROT_EVENT: + case PROT_ERROR: + break; + case PROT_COMMENT: + case '\0': + continue; + default: + goto invalid; + } + + /* Check for space character in the fifth position */ + ptr = strchr(buf, ' '); + if (!ptr || ptr != buf + 4) + goto invalid; + + /* Duplicate the string after the space */ + lineobj = strdup(ptr + 1); + if (!lineobj) + continue; + + /* Check for a colon somewhere on the line */ + ptr = strchr(buf, ':'); + if (!ptr) + goto invalid; + + /* Compare the part before colon with the target extension name */ + *ptr = 0; + if (strcmp(buf + 5, extEntry->name)) + goto skip; + + /* Get the opcode for the request, event, or error */ + offset = strtol(buf + 1, &ptr, 10); + if (offset == 0 && ptr == buf + 1) + goto invalid; + + /* Save the strdup result in the registry */ + switch(buf[0]) { + case PROT_REQUEST: + if (extEntry->base) + RegisterRequestName(extEntry->base, offset, lineobj); + else + RegisterRequestName(offset, 0, lineobj); + continue; + case PROT_EVENT: + RegisterEventName(extEntry->eventBase + offset, lineobj); + continue; + case PROT_ERROR: + RegisterErrorName(extEntry->errorBase + offset, lineobj); + continue; + } + + invalid: + LogMessage(X_WARNING, "Invalid line in " FILENAME ", skipping\n"); + skip: + free(lineobj); + } +} + +/* + * Registration functions + */ + +void +RegisterResourceName(RESTYPE resource, const char *name) +{ + resource &= TypeMask; + + while (resource >= nresource) { + if (!double_size(&resources, nresource, sizeof(char *))) + return; + nresource = nresource ? nresource * 2 : BASE_SIZE; + } + + resources[resource] = name; +} + +/* + * Lookup functions + */ + +const char * +LookupRequestName(int major, int minor) +{ + if (major >= nmajor) + return XREGISTRY_UNKNOWN; + if (minor >= nminor[major]) + return XREGISTRY_UNKNOWN; + + return requests[major][minor] ? requests[major][minor] : XREGISTRY_UNKNOWN; +} + +const char * +LookupMajorName(int major) +{ + if (major < 128) { + const char *retval; + + if (major >= nmajor) + return XREGISTRY_UNKNOWN; + if (0 >= nminor[major]) + return XREGISTRY_UNKNOWN; + + retval = requests[major][0]; + return retval ? retval + sizeof(CORE) : XREGISTRY_UNKNOWN; + } else { + ExtensionEntry *extEntry = GetExtensionEntry(major); + return extEntry ? extEntry->name : XREGISTRY_UNKNOWN; + } +} + +const char * +LookupEventName(int event) +{ + event &= 127; + if (event >= nevent) + return XREGISTRY_UNKNOWN; + + return events[event] ? events[event] : XREGISTRY_UNKNOWN; +} + +const char * +LookupErrorName(int error) +{ + if (error >= nerror) + return XREGISTRY_UNKNOWN; + + return errors[error] ? errors[error] : XREGISTRY_UNKNOWN; +} + +const char * +LookupResourceName(RESTYPE resource) +{ + resource &= TypeMask; + if (resource >= nresource) + return XREGISTRY_UNKNOWN; + + return resources[resource] ? resources[resource] : XREGISTRY_UNKNOWN; +} + +/* + * Setup and teardown + */ +void +dixResetRegistry(void) +{ + ExtensionEntry extEntry; + + /* Free all memory */ + while (nmajor--) { + while (nminor[nmajor]) + free(requests[nmajor][--nminor[nmajor]]); + free(requests[nmajor]); + } + free(requests); + free(nminor); + + while (nevent--) + free(events[nevent]); + free(events); + + while (nerror--) + free(errors[nerror]); + free(errors); + + free(resources); + + requests = NULL; + nminor = NULL; + events = NULL; + errors = NULL; + resources = NULL; + + nmajor = nevent = nerror = nresource = 0; + + /* Open the protocol file */ + if (fh) + fclose(fh); + fh = fopen(FILENAME, "r"); + if (!fh) + LogMessage(X_WARNING, "Failed to open protocol names file " FILENAME "\n"); + + /* Add built-in resources */ + RegisterResourceName(RT_NONE, "NONE"); + RegisterResourceName(RT_WINDOW, "WINDOW"); + RegisterResourceName(RT_PIXMAP, "PIXMAP"); + RegisterResourceName(RT_GC, "GC"); + RegisterResourceName(RT_FONT, "FONT"); + RegisterResourceName(RT_CURSOR, "CURSOR"); + RegisterResourceName(RT_COLORMAP, "COLORMAP"); + RegisterResourceName(RT_CMAPENTRY, "COLORMAP ENTRY"); + RegisterResourceName(RT_OTHERCLIENT, "OTHER CLIENT"); + RegisterResourceName(RT_PASSIVEGRAB, "PASSIVE GRAB"); + + /* Add the core protocol */ + memset(&extEntry, 0, sizeof(extEntry)); + extEntry.name = CORE; + RegisterExtensionNames(&extEntry); +} + +#endif /* XREGISTRY */ |