/* Copyright 1985, 1986, 1987, 1991, 1998 The Open Group Portions Copyright 2000 Sun Microsystems, Inc. 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 OPEN GROUP OR SUN MICROSYSTEMS, INC. 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 EVEN IF ADVISED IN ADVANCE OF THE POSSIBILITY OF SUCH DAMAGES. Except as contained in this notice, the names of The Open Group and/or Sun Microsystems, Inc. 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 Open Group and/or Sun Microsystems, Inc., as applicable. X Window System is a trademark of The Open Group OSF/1, OSF/Motif and Motif are registered trademarks, and OSF, the OSF logo, LBX, X Window System, and Xinerama are trademarks of the Open Group. All other trademarks and registered trademarks mentioned herein are the property of their respective owners. No right, title or interest in or to any trademark, service mark, logo or trade name of Sun Microsystems, Inc. or its licensors is granted. */ /* $XFree86: xc/lib/X11/XlcDL.c,v 1.12 2003/04/13 19:22:19 dawes Exp $ */ /* $XdotOrg: xc/lib/X11/XlcDL.c,v 1.6 2005/07/11 15:24:32 lars Exp $ */ #ifdef HAVE_CONFIG_H # include <config.h> #else # if defined(hpux) # define HAVE_DL_H # else # define HAVE_DLFCN_H # endif #endif #include <stdio.h> #ifdef HAVE_DL_H #include <dl.h> #endif #ifdef HAVE_DLFCN_H #include <dlfcn.h> #endif #include <ctype.h> #include "Xlibint.h" #include "XlcPublic.h" #include "XlcPubI.h" #if defined(_LP64) && defined(__sparcv9) # define _MACH64_NAME "sparcv9" #else # undef _MACH64_NAME #endif /* defined(_LP64) && defined(__sparcv9) */ #ifdef _MACH64_NAME # define _MACH64_NAME_LEN (sizeof (_MACH64_NAME) - 1) #endif #define XI18N_DLREL 2 #define iscomment(ch) ((ch) == '\0' || (ch) == '#') typedef enum { XLC_OBJECT, XIM_OBJECT, XOM_OBJECT } XI18NDLType; typedef struct { XI18NDLType type; int locale_name_len; char *locale_name; char *dl_name; char *open; char *im_register; char *im_unregister; int dl_release; unsigned int refcount; #if defined(hpux) shl_t dl_module; #else void *dl_module; #endif } XI18NObjectsListRec, *XI18NObjectsList; #define OBJECT_INIT_LEN 8 #define OBJECT_INC_LEN 4 static int lc_len = 0; static XI18NObjectsListRec *xi18n_objects_list = NULL; static int lc_count = 0; static int parse_line(char *line, char **argv, int argsize) { int argc = 0; char *p = line; while (argc < argsize) { while (isspace(*p)) { ++p; } if (iscomment(*p)){ break; } argv[argc++] = p; while (!isspace(*p)) { ++p; } if (iscomment(*p)) { break; } *p++ = '\0'; } return argc; } static char * strdup_with_underscore(const char *symbol) { char *result; if ((result = malloc(strlen(symbol) + 2)) == NULL) return NULL; result[0] = '_'; strcpy(result + 1, symbol); return result; } #ifndef hpux static void * try_both_dlsym (void *handle, char *name) { void *ret; ret = dlsym (handle, name); if (!ret) { name = strdup_with_underscore (name); if (name) { ret = dlsym (handle, name); free (name); } } return ret; } #endif static void resolve_object(char *path, const char *lc_name) { char filename[BUFSIZ]; FILE *fp; char buf[BUFSIZ]; if (lc_len == 0) { /* True only for the 1st time */ lc_len = OBJECT_INIT_LEN; xi18n_objects_list = (XI18NObjectsList) Xmalloc(sizeof(XI18NObjectsListRec) * lc_len); if (!xi18n_objects_list) return; } /* 1266793 Limit the length of path to prevent stack buffer corruption. sprintf(filename, "%s/%s", path, "XI18N_OBJS"); */ sprintf(filename, "%.*s/%s", BUFSIZ - 12, path, "XI18N_OBJS"); fp = fopen(filename, "r"); if (fp == (FILE *)NULL){ return; } while (fgets(buf, BUFSIZ, fp) != NULL){ char *p = buf; int n; char *args[6]; while (isspace(*p)){ ++p; } if (iscomment(*p)){ continue; } if (lc_count == lc_len) { lc_len += OBJECT_INC_LEN; xi18n_objects_list = (XI18NObjectsList) Xrealloc(xi18n_objects_list, sizeof(XI18NObjectsListRec) * lc_len); if (!xi18n_objects_list) return; } n = parse_line(p, args, 6); if (n == 3 || n == 5) { if (!strcmp(args[0], "XLC")){ xi18n_objects_list[lc_count].type = XLC_OBJECT; } else if (!strcmp(args[0], "XOM")){ xi18n_objects_list[lc_count].type = XOM_OBJECT; } else if (!strcmp(args[0], "XIM")){ xi18n_objects_list[lc_count].type = XIM_OBJECT; } xi18n_objects_list[lc_count].dl_name = strdup(args[1]); xi18n_objects_list[lc_count].open = strdup(args[2]); xi18n_objects_list[lc_count].dl_release = XI18N_DLREL; xi18n_objects_list[lc_count].locale_name = strdup(lc_name); xi18n_objects_list[lc_count].refcount = 0; xi18n_objects_list[lc_count].dl_module = (void*)NULL; if (n == 5) { xi18n_objects_list[lc_count].im_register = strdup(args[3]); xi18n_objects_list[lc_count].im_unregister = strdup(args[4]); } else { xi18n_objects_list[lc_count].im_register = NULL; xi18n_objects_list[lc_count].im_unregister = NULL; } lc_count++; } } fclose(fp); } static char* __lc_path(const char *dl_name, const char *lc_dir) { char *path; size_t len; /* * reject this for possible security issue */ if (strstr (dl_name, "../")) return NULL; #if defined (_LP64) && defined (_MACH64_NAME) len = (lc_dir ? strlen(lc_dir) : 0 ) + (dl_name ? strlen(dl_name) : 0) + _MACH64_NAME_LEN + 10; path = Xmalloc(len + 1); if (strchr(dl_name, '/') != NULL) { char *tmp = strdup(dl_name); char *dl_dir, *dl_file; char *slash_p; slash_p = strchr(tmp, '/'); *slash_p = '\0'; dl_dir = tmp; dl_file = ++slash_p; slash_p = strrchr(lc_dir, '/'); *slash_p = '\0'; strcpy(path, lc_dir); strcat(path, "/"); strcat(path, dl_dir); strcat(path, "/"); strcat(path, _MACH64_NAME); strcat(path, "/"); strcat(path, dl_file); strcat(path, ".so.2"); *slash_p = '/'; Xfree(tmp); } else { strcpy(path, lc_dir); strcat(path, "/"); strcat(path, _MACH64_NAME); strcat(path, "/"); strcat(path, dl_name); strcat(path, ".so.2"); } #else len = (lc_dir ? strlen(lc_dir) : 0 ) + (dl_name ? strlen(dl_name) : 0) + 10; #if defined POSTLOCALELIBDIR len += (strlen(POSTLOCALELIBDIR) + 1); #endif path = Xmalloc(len + 1); if (strchr(dl_name, '/') != NULL) { char *slash_p; slash_p = strrchr(lc_dir, '/'); *slash_p = '\0'; strcpy(path, lc_dir); strcat(path, "/"); #if defined POSTLOCALELIBDIR strcat(path, POSTLOCALELIBDIR); strcat(path, "/"); #endif strcat(path, dl_name); strcat(path, ".so.2"); *slash_p = '/'; } else { strcpy(path, lc_dir); strcat(path, "/"); #if defined POSTLOCALELIBDIR strcat(path, POSTLOCALELIBDIR); strcat(path, "/"); #endif strcat(path, dl_name); strcat(path, ".so.2"); } #endif return path; } /* We reference count dlopen() and dlclose() of modules; unfortunately, * since XCloseIM, XCloseOM, XlcClose aren't wrapped, but directly * call the close method of the object, we leak a reference count every * time we open then close a module. Fixing this would require * either creating proxy objects or hooks for close_im/close_om * in XLCd */ static Bool open_object( XI18NObjectsList object, char *lc_dir) { char *path; if (object->refcount == 0) { path = __lc_path(object->dl_name, lc_dir); if (!path) return False; #if defined(hpux) object->dl_module = shl_load(path, BIND_DEFERRED, 0L); #else object->dl_module = dlopen(path, RTLD_LAZY); #endif Xfree(path); if (!object->dl_module) return False; } object->refcount++; return True; } static void * fetch_symbol( XI18NObjectsList object, char *symbol) { void *result = NULL; #if defined(hpux) int getsyms_cnt, i; struct shl_symbol *symbols; #endif if (symbol == NULL) return NULL; #if defined(hpux) getsyms_cnt = shl_getsymbols(object->dl_module, TYPE_PROCEDURE, EXPORT_SYMBOLS, malloc, &symbols); for(i=0; i<getsyms_cnt; i++) { if(!strcmp(symbols[i].name, symbol)) { result = symbols[i].value; break; } } if(getsyms_cnt > 0) { free(symbols); } #else result = try_both_dlsym(object->dl_module, symbol); #endif return result; } static void close_object(XI18NObjectsList object) { object->refcount--; if (object->refcount == 0) { #if defined(hpux) shl_unload(object->dl_module); #else dlclose(object->dl_module); #endif object->dl_module = NULL; } } typedef XLCd (*dynamicLoadProc)(const char *); XLCd _XlcDynamicLoad(const char *lc_name) { XLCd lcd = (XLCd)NULL; dynamicLoadProc lc_loader = (dynamicLoadProc)NULL; int count; XI18NObjectsList objects_list; char lc_dir[BUFSIZE]; if (lc_name == NULL) return (XLCd)NULL; if (_XlcLocaleDirName(lc_dir, BUFSIZE, (char *)lc_name) == (char*)NULL) return (XLCd)NULL; resolve_object(lc_dir, lc_name); objects_list = xi18n_objects_list; count = lc_count; for (; count-- > 0; objects_list++) { if (objects_list->type != XLC_OBJECT || strcmp(objects_list->locale_name, lc_name)) continue; if (!open_object (objects_list, lc_dir)) continue; lc_loader = (dynamicLoadProc)fetch_symbol (objects_list, objects_list->open); if (!lc_loader) continue; lcd = (*lc_loader)(lc_name); if (lcd != (XLCd)NULL) { break; } close_object (objects_list); } return (XLCd)lcd; } typedef XIM (*dynamicOpenProcp)(XLCd, Display *, XrmDatabase, char *, char *); static XIM _XDynamicOpenIM(XLCd lcd, Display *display, XrmDatabase rdb, char *res_name, char *res_class) { XIM im = (XIM)NULL; char lc_dir[BUFSIZE]; char *lc_name; dynamicOpenProcp im_openIM = (dynamicOpenProcp)NULL; int count; XI18NObjectsList objects_list = xi18n_objects_list; lc_name = lcd->core->name; if (_XlcLocaleDirName(lc_dir, BUFSIZE, lc_name) == NULL) return (XIM)0; count = lc_count; for (; count-- > 0; objects_list++) { if (objects_list->type != XIM_OBJECT || strcmp(objects_list->locale_name, lc_name)) continue; if (!open_object (objects_list, lc_dir)) continue; im_openIM = (dynamicOpenProcp)fetch_symbol(objects_list, objects_list->open); if (!im_openIM) continue; im = (*im_openIM)(lcd, display, rdb, res_name, res_class); if (im != (XIM)NULL) { break; } close_object (objects_list); } return (XIM)im; } typedef Bool (*dynamicRegisterCBProcp)( XLCd, Display *, XrmDatabase, char *, char *, XIDProc, XPointer); static Bool _XDynamicRegisterIMInstantiateCallback( XLCd lcd, Display *display, XrmDatabase rdb, char *res_name, char *res_class, XIDProc callback, XPointer client_data) { char lc_dir[BUFSIZE]; char *lc_name; dynamicRegisterCBProcp im_registerIM = (dynamicRegisterCBProcp)NULL; Bool ret_flag = False; int count; XI18NObjectsList objects_list = xi18n_objects_list; #if defined(hpux) int getsyms_cnt, i; struct shl_symbol *symbols; #endif lc_name = lcd->core->name; if (_XlcLocaleDirName(lc_dir, BUFSIZE, lc_name) == NULL) return False; count = lc_count; for (; count-- > 0; objects_list++) { if (objects_list->type != XIM_OBJECT || strcmp(objects_list->locale_name, lc_name)) continue; if (!open_object (objects_list, lc_dir)) continue; im_registerIM = (dynamicRegisterCBProcp)fetch_symbol(objects_list, objects_list->im_register); if (!im_registerIM) continue; ret_flag = (*im_registerIM)(lcd, display, rdb, res_name, res_class, callback, client_data); if (ret_flag) break; close_object (objects_list); } return (Bool)ret_flag; } typedef Bool (*dynamicUnregisterProcp)( XLCd, Display *, XrmDatabase, char *, char *, XIDProc, XPointer); static Bool _XDynamicUnRegisterIMInstantiateCallback( XLCd lcd, Display *display, XrmDatabase rdb, char *res_name, char *res_class, XIDProc callback, XPointer client_data) { char lc_dir[BUFSIZE]; char *lc_name; dynamicUnregisterProcp im_unregisterIM = (dynamicUnregisterProcp)NULL; Bool ret_flag = False; int count; XI18NObjectsList objects_list = xi18n_objects_list; #if defined(hpux) int getsyms_cnt, i; struct shl_symbol *symbols; #endif lc_name = lcd->core->name; if (_XlcLocaleDirName(lc_dir, BUFSIZE, lc_name) == NULL) return False; count = lc_count; for (; count-- > 0; objects_list++) { if (objects_list->type != XIM_OBJECT || strcmp(objects_list->locale_name, lc_name)) continue; if (!objects_list->refcount) /* Must already be opened */ continue; im_unregisterIM = (dynamicUnregisterProcp)fetch_symbol(objects_list, objects_list->im_unregister); if (!im_unregisterIM) continue; ret_flag = (*im_unregisterIM)(lcd, display, rdb, res_name, res_class, callback, client_data); if (ret_flag) { close_object (objects_list); /* opened in RegisterIMInstantiateCallback */ break; } } return (Bool)ret_flag; } Bool _XInitDynamicIM(XLCd lcd) { if(lcd == (XLCd)NULL) return False; lcd->methods->open_im = _XDynamicOpenIM; lcd->methods->register_callback = _XDynamicRegisterIMInstantiateCallback; lcd->methods->unregister_callback = _XDynamicUnRegisterIMInstantiateCallback; return True; } typedef XOM (*dynamicIOpenProcp)( XLCd, Display *, XrmDatabase, _Xconst char *, _Xconst char *); static XOM _XDynamicOpenOM(XLCd lcd, Display *display, XrmDatabase rdb, _Xconst char *res_name, _Xconst char *res_class) { XOM om = (XOM)NULL; int count; char lc_dir[BUFSIZE]; char *lc_name; dynamicIOpenProcp om_openOM = (dynamicIOpenProcp)NULL; XI18NObjectsList objects_list = xi18n_objects_list; #if defined(hpux) int getsyms_cnt, i; struct shl_symbol *symbols; #endif lc_name = lcd->core->name; if (_XlcLocaleDirName(lc_dir, BUFSIZE, lc_name) == NULL) return (XOM)0; count = lc_count; for (; count-- > 0; objects_list++) { if (objects_list->type != XOM_OBJECT || strcmp(objects_list->locale_name, lc_name)) continue; if (!open_object (objects_list, lc_dir)) continue; om_openOM = (dynamicIOpenProcp)fetch_symbol(objects_list, objects_list->open); if (!om_openOM) continue; om = (*om_openOM)(lcd, display, rdb, res_name, res_class); if (om != (XOM)NULL) { break; } close_object(objects_list); } return (XOM)om; } Bool _XInitDynamicOM(XLCd lcd) { if(lcd == (XLCd)NULL) return False; lcd->methods->open_om = _XDynamicOpenOM; return True; }