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00028 #ifdef HAVE_CONFIG_H
00029 # include <config.h>
00030 #endif
00031
00032 #include "plugin_p.h"
00033 #include <gwenhywfar/buffer.h>
00034 #include <gwenhywfar/debug.h>
00035 #include <gwenhywfar/directory.h>
00036 #include <gwenhywfar/pathmanager.h>
00037 #include <gwenhywfar/gwenhywfar.h>
00038
00039 #include <sys/types.h>
00040 #include <sys/stat.h>
00041 #ifdef HAVE_UNISTD_H
00042 # include <unistd.h>
00043 #endif
00044 #include <errno.h>
00045 #include <string.h>
00046 #ifdef HAVE_STRINGS_H
00047 # include <strings.h>
00048 #endif
00049 #include <ctype.h>
00050
00051 #ifdef OS_WIN32
00052 # include <windows.h>
00053 #endif
00054
00055 static GWEN_PLUGIN_MANAGER_LIST *gwen_plugin_manager__list=0;
00056
00057
00058 GWEN_INHERIT_FUNCTIONS(GWEN_PLUGIN)
00059 GWEN_LIST_FUNCTIONS(GWEN_PLUGIN, GWEN_Plugin)
00060 GWEN_INHERIT_FUNCTIONS(GWEN_PLUGIN_MANAGER)
00061 GWEN_LIST_FUNCTIONS(GWEN_PLUGIN_MANAGER, GWEN_PluginManager)
00062
00063
00064
00065 int GWEN_Plugin_ModuleInit(){
00066 gwen_plugin_manager__list=GWEN_PluginManager_List_new();
00067 return 0;
00068 }
00069
00070
00071
00072 int GWEN_Plugin_ModuleFini(){
00073 GWEN_PluginManager_List_free(gwen_plugin_manager__list);
00074 return 0;
00075 }
00076
00077
00078
00079 GWEN_PLUGIN *GWEN_Plugin_new(GWEN_PLUGIN_MANAGER *pm,
00080 const char *name,
00081 const char *fileName){
00082 GWEN_PLUGIN *p;
00083
00084 assert(pm);
00085 assert(name);
00086 GWEN_NEW_OBJECT(GWEN_PLUGIN, p);
00087 DBG_MEM_INC("GWEN_PLUGIN", 0);
00088 p->refCount=1;
00089 GWEN_INHERIT_INIT(GWEN_PLUGIN, p);
00090 GWEN_LIST_INIT(GWEN_PLUGIN, p);
00091 p->manager=pm;
00092 p->name=strdup(name);
00093 if (fileName)
00094 p->fileName=strdup(fileName);
00095
00096 return p;
00097 }
00098
00099
00100
00101 void GWEN_Plugin_free(GWEN_PLUGIN *p){
00102 if (p) {
00103 DBG_MEM_DEC("GWEN_PLUGIN");
00104 assert(p->refCount);
00105 if (--(p->refCount)==0) {
00106 GWEN_INHERIT_FINI(GWEN_PLUGIN, p);
00107 free(p->name);
00108 free(p->fileName);
00109 if (p->libLoader) {
00110 GWEN_LibLoader_CloseLibrary(p->libLoader);
00111 GWEN_LibLoader_free(p->libLoader);
00112 }
00113 GWEN_LIST_FINI(GWEN_PLUGIN, p);
00114 GWEN_FREE_OBJECT(p);
00115 }
00116 }
00117 }
00118
00119
00120
00121 void GWEN_Plugin_Attach(GWEN_PLUGIN *p){
00122 assert(p);
00123 assert(p->refCount);
00124 DBG_MEM_INC("GWEN_PLUGIN", 1);
00125 p->refCount++;
00126 }
00127
00128
00129
00130 GWEN_PLUGIN_MANAGER *GWEN_Plugin_GetManager(const GWEN_PLUGIN *p){
00131 assert(p);
00132 return p->manager;
00133 }
00134
00135
00136
00137 const char *GWEN_Plugin_GetName(const GWEN_PLUGIN *p){
00138 assert(p);
00139 return p->name;
00140 }
00141
00142
00143
00144 const char *GWEN_Plugin_GetFileName(const GWEN_PLUGIN *p){
00145 assert(p);
00146 return p->fileName;
00147 }
00148
00149
00150
00151 GWEN_LIBLOADER *GWEN_Plugin_GetLibLoader(const GWEN_PLUGIN *p){
00152 assert(p);
00153 return p->libLoader;
00154 }
00155
00156
00157
00158 void GWEN_Plugin_SetLibLoader(GWEN_PLUGIN *p, GWEN_LIBLOADER *ll){
00159 assert(p);
00160 p->libLoader=ll;
00161 }
00162
00163
00164
00165
00166
00167
00168
00169
00170 GWEN_PLUGIN_MANAGER *GWEN_PluginManager_new(const char *name,
00171 const char *destLib){
00172 GWEN_PLUGIN_MANAGER *pm;
00173
00174 assert(name);
00175 assert(destLib);
00176 GWEN_NEW_OBJECT(GWEN_PLUGIN_MANAGER, pm);
00177 DBG_MEM_INC("GWEN_PLUGIN_MANAGER", 0);
00178 GWEN_INHERIT_INIT(GWEN_PLUGIN_MANAGER, pm);
00179 GWEN_LIST_INIT(GWEN_PLUGIN_MANAGER, pm);
00180 pm->name=strdup(name);
00181 pm->destLib=strdup(destLib);
00182 pm->plugins=GWEN_Plugin_List_new();
00183
00184 return pm;
00185 }
00186
00187
00188
00189 void GWEN_PluginManager_free(GWEN_PLUGIN_MANAGER *pm){
00190 if (pm) {
00191 DBG_MEM_DEC("GWEN_PLUGIN_MANAGER");
00192 GWEN_Plugin_List_free(pm->plugins);
00193 GWEN_INHERIT_FINI(GWEN_PLUGIN_MANAGER, pm);
00194 free(pm->destLib);
00195 free(pm->name);
00196 GWEN_LIST_FINI(GWEN_PLUGIN_MANAGER, pm);
00197 GWEN_FREE_OBJECT(pm);
00198 }
00199 }
00200
00201
00202
00203 const char *GWEN_PluginManager_GetName(const GWEN_PLUGIN_MANAGER *pm){
00204 assert(pm);
00205 return pm->name;
00206 }
00207
00208
00209
00210 int GWEN_PluginManager_AddPath(GWEN_PLUGIN_MANAGER *pm,
00211 const char *callingLib,
00212 const char *s){
00213 assert(pm);
00214 return GWEN_PathManager_AddPath(callingLib,
00215 pm->destLib,
00216 pm->name,
00217 s);
00218 }
00219
00220
00221
00222 int GWEN_PluginManager_AddRelPath(GWEN_PLUGIN_MANAGER *pm,
00223 const char *callingLib,
00224 const char *s,
00225 GWEN_PATHMANAGER_RELMODE rm) {
00226 assert(pm);
00227 return GWEN_PathManager_AddRelPath(callingLib,
00228 pm->destLib,
00229 pm->name,
00230 s,
00231 rm);
00232 }
00233
00234
00235
00236 int GWEN_PluginManager_InsertPath(GWEN_PLUGIN_MANAGER *pm,
00237 const char *callingLib,
00238 const char *s) {
00239 assert(pm);
00240 return GWEN_PathManager_InsertPath(callingLib,
00241 pm->destLib,
00242 pm->name,
00243 s);
00244 }
00245
00246
00247
00248 int GWEN_PluginManager_RemovePath(GWEN_PLUGIN_MANAGER *pm,
00249 const char *callingLib,
00250 const char *s) {
00251 assert(pm);
00252 return GWEN_PathManager_RemovePath(callingLib,
00253 pm->destLib,
00254 pm->name,
00255 s);
00256 }
00257
00258
00259
00260 int GWEN_PluginManager_AddPathFromWinReg(GWEN_PLUGIN_MANAGER *pm,
00261 const char *callingLib,
00262 const char *keypath,
00263 const char *varname){
00264 #ifdef OS_WIN32
00265 HKEY hkey;
00266 TCHAR nbuffer[MAX_PATH];
00267 BYTE vbuffer[MAX_PATH];
00268 DWORD nsize;
00269 DWORD vsize;
00270 DWORD typ;
00271 int i;
00272
00273 assert(pm);
00274
00275 snprintf(nbuffer, sizeof(nbuffer), keypath);
00276
00277
00278 if (RegOpenKey(HKEY_LOCAL_MACHINE, nbuffer, &hkey)){
00279 DBG_INFO(GWEN_LOGDOMAIN, "RegOpenKey %s failed.", keypath);
00280 return 1;
00281 }
00282
00283
00284 for (i=0;; i++) {
00285 nsize=sizeof(nbuffer);
00286 vsize=sizeof(vbuffer);
00287 if (ERROR_SUCCESS!=RegEnumValue(hkey,
00288 i,
00289 nbuffer,
00290 &nsize,
00291 0,
00292 &typ,
00293 vbuffer,
00294 &vsize))
00295 break;
00296 if (strcasecmp(nbuffer, varname)==0 && typ==REG_SZ) {
00297
00298 RegCloseKey(hkey);
00299 return GWEN_PathManager_AddPath(callingLib,
00300 pm->destLib,
00301 pm->name,
00302 (char*)vbuffer);
00303 }
00304 }
00305
00306 RegCloseKey(hkey);
00307 DBG_INFO(GWEN_LOGDOMAIN,
00308 "In RegKey \"%s\" the variable \"%s\" does not exist",
00309 keypath, varname);
00310 return 1;
00311
00312 #else
00313 return 0;
00314 #endif
00315 }
00316
00317
00318
00319 GWEN_PLUGIN *GWEN_PluginManager_LoadPlugin(GWEN_PLUGIN_MANAGER *pm,
00320 const char *modname){
00321 GWEN_LIBLOADER *ll;
00322 GWEN_PLUGIN *plugin;
00323 GWEN_PLUGIN_FACTORYFN fn;
00324 void *p;
00325 GWEN_BUFFER *nbuf;
00326 const char *s;
00327 const char *fname;
00328 int err;
00329 GWEN_STRINGLIST *sl;
00330 GWEN_STRINGLISTENTRY *se;
00331
00332 assert(pm);
00333 ll=GWEN_LibLoader_new();
00334 sl=GWEN_PathManager_GetPaths(pm->destLib, pm->name);
00335 if (sl==NULL) {
00336 DBG_ERROR(GWEN_LOGDOMAIN, "No paths for plugins (%s)", pm->name);
00337 GWEN_LibLoader_free(ll);
00338 return NULL;
00339 }
00340 nbuf=GWEN_Buffer_new(0, 128, 0, 1);
00341 s=modname;
00342 while(*s) GWEN_Buffer_AppendByte(nbuf, tolower(*(s++)));
00343 se=GWEN_StringList_FirstEntry(sl);
00344 fname=0;
00345 while(se) {
00346 fname=GWEN_StringListEntry_Data(se);
00347 assert(fname);
00348 if (GWEN_LibLoader_OpenLibraryWithPath(ll, fname,
00349 GWEN_Buffer_GetStart(nbuf))==0)
00350 break;
00351 else {
00352 DBG_DEBUG(GWEN_LOGDOMAIN,
00353 "Could not load plugin \"%s\" from \"%s\"", modname, fname);
00354 }
00355 se=GWEN_StringListEntry_Next(se);
00356 }
00357 if (!se) {
00358 DBG_ERROR(GWEN_LOGDOMAIN, "Plugin \"%s\" not found.", modname);
00359 GWEN_Buffer_free(nbuf);
00360 GWEN_StringList_free(sl);
00361 GWEN_LibLoader_free(ll);
00362 return NULL;
00363 }
00364 GWEN_Buffer_free(nbuf);
00365
00366
00367 nbuf=GWEN_Buffer_new(0, 128, 0, 1);
00368 s=pm->name;
00369 while(*s) GWEN_Buffer_AppendByte(nbuf, tolower(*(s++)));
00370 GWEN_Buffer_AppendByte(nbuf, '_');
00371 s=modname;
00372 while(*s) GWEN_Buffer_AppendByte(nbuf, tolower(*(s++)));
00373 GWEN_Buffer_AppendString(nbuf, "_factory");
00374
00375
00376 err=GWEN_LibLoader_Resolve(ll, GWEN_Buffer_GetStart(nbuf), &p);
00377 if (err) {
00378 DBG_ERROR_ERR(GWEN_LOGDOMAIN, err);
00379 GWEN_Buffer_free(nbuf);
00380 GWEN_LibLoader_CloseLibrary(ll);
00381 GWEN_StringList_free(sl);
00382 GWEN_LibLoader_free(ll);
00383 return 0;
00384 }
00385 GWEN_Buffer_free(nbuf);
00386
00387 fn=(GWEN_PLUGIN_FACTORYFN)p;
00388 assert(fn);
00389 plugin=fn(pm, modname, fname);
00390 if (!plugin) {
00391 DBG_ERROR(GWEN_LOGDOMAIN, "Error in plugin: No plugin created");
00392 GWEN_LibLoader_CloseLibrary(ll);
00393 GWEN_StringList_free(sl);
00394 GWEN_LibLoader_free(ll);
00395 return 0;
00396 }
00397
00398
00399 GWEN_StringList_free(sl);
00400 GWEN_Plugin_SetLibLoader(plugin, ll);
00401 return plugin;
00402 }
00403
00404
00405
00406 GWEN_PLUGIN *GWEN_PluginManager_LoadPluginFile(GWEN_PLUGIN_MANAGER *pm,
00407 const char *modname,
00408 const char *fname){
00409 GWEN_LIBLOADER *ll;
00410 GWEN_PLUGIN *plugin;
00411 GWEN_PLUGIN_FACTORYFN fn;
00412 void *p;
00413 GWEN_BUFFER *nbuf;
00414 const char *s;
00415 int err;
00416
00417 ll=GWEN_LibLoader_new();
00418 if (GWEN_LibLoader_OpenLibrary(ll, fname)) {
00419 DBG_INFO(GWEN_LOGDOMAIN,
00420 "Could not load plugin \"%s\" (%s)", modname, fname);
00421 GWEN_LibLoader_free(ll);
00422 return 0;
00423 }
00424
00425
00426 nbuf=GWEN_Buffer_new(0, 128, 0, 1);
00427 s=pm->name;
00428 while(*s) GWEN_Buffer_AppendByte(nbuf, tolower(*(s++)));
00429 GWEN_Buffer_AppendByte(nbuf, '_');
00430 s=modname;
00431 while(*s) GWEN_Buffer_AppendByte(nbuf, tolower(*(s++)));
00432 GWEN_Buffer_AppendString(nbuf, "_factory");
00433
00434
00435 err=GWEN_LibLoader_Resolve(ll, GWEN_Buffer_GetStart(nbuf), &p);
00436 if (err) {
00437 DBG_INFO_ERR(GWEN_LOGDOMAIN, err);
00438 GWEN_Buffer_free(nbuf);
00439 GWEN_LibLoader_CloseLibrary(ll);
00440 GWEN_LibLoader_free(ll);
00441 return 0;
00442 }
00443 GWEN_Buffer_free(nbuf);
00444
00445 fn=(GWEN_PLUGIN_FACTORYFN)p;
00446 assert(fn);
00447 plugin=fn(pm, modname, fname);
00448 if (!plugin) {
00449 DBG_INFO(GWEN_LOGDOMAIN, "Error in plugin: No plugin created");
00450 GWEN_LibLoader_CloseLibrary(ll);
00451 GWEN_LibLoader_free(ll);
00452 return 0;
00453 }
00454
00455
00456 GWEN_Plugin_SetLibLoader(plugin, ll);
00457
00458 return plugin;
00459 }
00460
00461
00462
00463 GWEN_PLUGIN *GWEN_PluginManager__FindPlugin(GWEN_PLUGIN_MANAGER *pm,
00464 const char *s){
00465 GWEN_PLUGIN *p;
00466
00467 assert(pm);
00468 p=GWEN_Plugin_List_First(pm->plugins);
00469 while(p) {
00470 if (strcasecmp(p->name, s)==0)
00471 break;
00472 p=GWEN_Plugin_List_Next(p);
00473 }
00474
00475 return p;
00476 }
00477
00478
00479
00480 GWEN_PLUGIN *GWEN_PluginManager_GetPlugin(GWEN_PLUGIN_MANAGER *pm,
00481 const char *s){
00482 GWEN_PLUGIN *p;
00483
00484 p=GWEN_PluginManager__FindPlugin(pm, s);
00485 if (p)
00486 return p;
00487 p=GWEN_PluginManager_LoadPlugin(pm, s);
00488 if (p) {
00489 GWEN_Plugin_List_Add(p, pm->plugins);
00490 return p;
00491 }
00492 DBG_INFO(GWEN_LOGDOMAIN, "Plugin \"%s\" not found", s);
00493 return 0;
00494 }
00495
00496
00497
00498 GWEN_PLUGIN_MANAGER *GWEN_PluginManager_FindPluginManager(const char *s){
00499 GWEN_PLUGIN_MANAGER *pm;
00500
00501 pm=GWEN_PluginManager_List_First(gwen_plugin_manager__list);
00502 while(pm) {
00503 if (strcasecmp(pm->name, s)==0)
00504 break;
00505 pm=GWEN_PluginManager_List_Next(pm);
00506 }
00507
00508 return pm;
00509 }
00510
00511
00512
00513 int GWEN_PluginManager_Register(GWEN_PLUGIN_MANAGER *pm){
00514 GWEN_PLUGIN_MANAGER *tpm;
00515 int rv;
00516
00517 assert(gwen_plugin_manager__list);
00518 assert(pm);
00519 tpm=GWEN_PluginManager_FindPluginManager(pm->name);
00520 if (tpm) {
00521 DBG_ERROR(GWEN_LOGDOMAIN,
00522 "Plugin type \"%s\" already registered",
00523 pm->name);
00524 return -1;
00525 }
00526
00527 rv=GWEN_PathManager_DefinePath(pm->destLib, pm->name);
00528 if (rv) {
00529 DBG_INFO(GWEN_LOGDOMAIN, "Could not define path for plugin [%s:%s]",
00530 pm->destLib, pm->name);
00531 return rv;
00532 }
00533
00534 GWEN_PluginManager_List_Add(pm, gwen_plugin_manager__list);
00535 DBG_INFO(GWEN_LOGDOMAIN,
00536 "Plugin type \"%s\" registered",
00537 pm->name);
00538 return 0;
00539 }
00540
00541
00542
00543 int GWEN_PluginManager_Unregister(GWEN_PLUGIN_MANAGER *pm){
00544 GWEN_PLUGIN_MANAGER *tpm;
00545 int rv;
00546
00547 assert(gwen_plugin_manager__list);
00548 assert(pm);
00549 tpm=GWEN_PluginManager_FindPluginManager(pm->name);
00550 if (!tpm) {
00551 DBG_ERROR(GWEN_LOGDOMAIN,
00552 "Plugin type \"%s\" not registered",
00553 pm->name);
00554 return -1;
00555 }
00556
00557 rv=GWEN_PathManager_UndefinePath(pm->destLib, pm->name);
00558 if (rv) {
00559 DBG_INFO(GWEN_LOGDOMAIN, "Could not undefine path for plugin [%s:%s]",
00560 pm->destLib, pm->name);
00561 return rv;
00562 }
00563
00564 GWEN_PluginManager_List_Del(pm);
00565 DBG_INFO(GWEN_LOGDOMAIN,
00566 "Plugin type \"%s\" unregistered",
00567 pm->name);
00568 return 0;
00569 }
00570
00571
00572
00573 GWEN_PLUGIN_DESCRIPTION_LIST2*
00574 GWEN_PluginManager_GetPluginDescrs(GWEN_PLUGIN_MANAGER *pm){
00575 GWEN_PLUGIN_DESCRIPTION_LIST2 *pl;
00576 GWEN_STRINGLIST *sl;
00577 GWEN_STRINGLISTENTRY *se;
00578
00579 sl=GWEN_PathManager_GetPaths(pm->destLib, pm->name);
00580 if (sl==NULL) {
00581 DBG_ERROR(GWEN_LOGDOMAIN, "No paths for plugins (%s)", pm->name);
00582 return NULL;
00583 }
00584 se=GWEN_StringList_FirstEntry(sl);
00585 if (!se) {
00586 DBG_ERROR(GWEN_LOGDOMAIN, "No paths given");
00587 GWEN_StringList_free(sl);
00588 return 0;
00589 }
00590
00591 pl=GWEN_PluginDescription_List2_new();
00592 while(se) {
00593 int rv;
00594 const char *path;
00595
00596 path=GWEN_StringListEntry_Data(se);
00597 assert(path);
00598 rv=GWEN_LoadPluginDescrsByType(path, pm->name, pl);
00599 if (rv) {
00600 DBG_INFO(GWEN_LOGDOMAIN,
00601 "Error loading plugin description in \"%s\"", path);
00602 }
00603 se=GWEN_StringListEntry_Next(se);
00604 }
00605
00606 if (GWEN_PluginDescription_List2_GetSize(pl)==0) {
00607 GWEN_PluginDescription_List2_free(pl);
00608 GWEN_StringList_free(sl);
00609 return 0;
00610 }
00611
00612 GWEN_StringList_free(sl);
00613 return pl;
00614 }
00615
00616
00617 GWEN_STRINGLIST *GWEN_PluginManager_GetPaths(const GWEN_PLUGIN_MANAGER *pm){
00618 assert(pm);
00619 return GWEN_PathManager_GetPaths(pm->destLib, pm->name);
00620 }
00621
00622
00623
00624 GWEN_PLUGIN_DESCRIPTION*
00625 GWEN_PluginManager_GetPluginDescr(GWEN_PLUGIN_MANAGER *pm,
00626 const char *modName) {
00627 GWEN_PLUGIN_DESCRIPTION_LIST2 *dl;
00628
00629 dl=GWEN_PluginManager_GetPluginDescrs(pm);
00630 if (dl==0)
00631 return 0;
00632 else {
00633 GWEN_PLUGIN_DESCRIPTION_LIST2_ITERATOR *dit;
00634
00635 dit=GWEN_PluginDescription_List2_First(dl);
00636 if (dit) {
00637 GWEN_PLUGIN_DESCRIPTION *d;
00638
00639 d=GWEN_PluginDescription_List2Iterator_Data(dit);
00640 while(d) {
00641 if (strcasecmp(GWEN_PluginDescription_GetName(d), modName)==0)
00642 break;
00643 d=GWEN_PluginDescription_List2Iterator_Next(dit);
00644 }
00645 GWEN_PluginDescription_List2Iterator_free(dit);
00646
00647 if (d) {
00648 d=GWEN_PluginDescription_dup(d);
00649 GWEN_PluginDescription_List2_freeAll(dl);
00650 return d;
00651 }
00652 }
00653 GWEN_PluginDescription_List2_freeAll(dl);
00654 }
00655
00656 return 0;
00657 }
00658
00659
00660
00661
00662
00663