2 * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
3 * Copyright (C) 1999-2012 Hiroyuki Yamamoto and the Claws Mail Team
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 3 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
33 #include <glib/gi18n.h>
50 const gchar *(*name) (void);
51 const gchar *(*desc) (void);
52 const gchar *(*version) (void);
53 const gchar *(*type) (void);
54 const gchar *(*licence) (void);
55 struct PluginFeature *(*provides) (void);
59 gboolean unloaded_hidden;
62 const gchar *plugin_feature_names[] =
68 N_("a privacy interface"),
74 /* The plugin must be at least under one of these licences and have
75 the corresponding token returned by the plugin_licence function.
77 const gchar const *plugin_licence_tokens[] = {
78 "LGPL2.1+", "LGPLv2.1+", "LGPL2.1", "LGPLv2.1",
79 "LGPL3+", "LGPLv3+", "LGPL3", "LGPLv3",
80 "GPL3+", "GPLv3+", "GPL3", "GPLv3",
82 "Apache2.0", "Apache 2.0", "Apache v2.0",
83 "2-clause BSD", "Simplified BSD", "FreeBSD",
84 "3-clause BSD", "New BSD", "Modified BSD",
88 /* Dual (or more) licences are allowed, must be separated by one of these.
90 #define IS_LICENCE_SEP(a) ((a) == ',' || (a) == ';' || (a) == '|' || (a) == '/' || (a) == '\0')
93 * List of all loaded plugins
95 GSList *plugins = NULL;
96 GSList *plugin_types = NULL;
99 * List of plugins unloaded for some fixable reason
101 static GSList *unloaded_plugins = NULL;
103 static gint list_find_by_string(gconstpointer data, gconstpointer str)
105 return strcmp((gchar *)data, (gchar *)str) ? TRUE : FALSE;
108 static gint list_find_by_plugin_filename(const Plugin *plugin, const gchar *filename)
110 /* FIXME: There is a problem in case of symlinks or when a
111 user tries to load a plugin with the same name from a
112 different directory. I think it would be better to compare
113 only the basename of the filename here (case-insensitive on
115 cm_return_val_if_fail(plugin, 1);
116 cm_return_val_if_fail(plugin->filename, 1);
117 cm_return_val_if_fail(filename, 1);
118 return strcmp(filename, plugin->filename);
121 void plugin_save_list(void)
123 gchar *rcpath, *block;
125 GSList *type_cur, *plugin_cur;
128 for (type_cur = plugin_types; type_cur != NULL; type_cur = g_slist_next(type_cur)) {
129 rcpath = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, COMMON_RC, NULL);
131 block = g_strconcat("PluginsWin32_", type_cur->data, NULL);
133 block = g_strconcat("Plugins_", type_cur->data, NULL);
135 if ((pfile = prefs_write_open(rcpath)) == NULL ||
136 (prefs_set_block_label(pfile, block) < 0)) {
137 g_warning("failed to write plugin list\n");
143 for (plugin_cur = plugins; plugin_cur != NULL; plugin_cur = g_slist_next(plugin_cur)) {
144 plugin = (Plugin *) plugin_cur->data;
146 if (plugin->unloaded_hidden)
149 if (!strcmp(plugin->type(), type_cur->data))
150 if (fprintf(pfile->fp, "%s\n", plugin->filename) < 0)
153 for (plugin_cur = unloaded_plugins; plugin_cur != NULL; plugin_cur = g_slist_next(plugin_cur)) {
154 plugin = (Plugin *) plugin_cur->data;
156 if (plugin->unloaded_hidden)
159 if (!strcmp(plugin->type(), type_cur->data))
160 if (fprintf(pfile->fp, "%s\n", plugin->filename) < 0)
163 if (fprintf(pfile->fp, "\n") < 0)
166 if (prefs_file_close(pfile) < 0)
167 g_warning("failed to write plugin list\n");
174 g_warning("failed to write plugin list\n");
175 if (prefs_file_close_revert(pfile) < 0)
176 g_warning("failed to revert plugin list\n");
182 static gboolean plugin_is_loaded(const gchar *filename)
184 return (g_slist_find_custom(plugins, filename,
185 (GCompareFunc)list_find_by_plugin_filename) != NULL);
188 static Plugin *plugin_get_by_filename(const gchar *filename)
190 GSList *cur = plugins;
191 for(; cur; cur = cur->next) {
192 Plugin *p = (Plugin *)cur->data;
193 if (!strcmp(p->filename, filename)) {
201 * Loads a plugin dependancies
203 * Plugin dependancies are, optionnaly, listed in a file in
204 * get_plugin_dir()/$pluginname.deps.
205 * \param filename The filename of the plugin for which we have to load deps
206 * \param error The location where an error string can be stored
207 * \return 0 on success, -1 otherwise
209 static gint plugin_load_deps(const gchar *filename, gchar **error)
212 gchar *deps_file = NULL;
217 tmp = g_strdup(filename);
218 if( (p = strrchr(tmp, '.')) )
220 deps_file = g_strconcat(tmp, ".deps", NULL);
223 fp = g_fopen(deps_file, "rb");
229 while (fgets(buf, sizeof(buf), fp) != NULL) {
230 Plugin *dep_plugin = NULL;
232 buf[strlen(buf)-1]='\0'; /* chop off \n */
233 path = g_strconcat(get_plugin_dir(), buf,
234 ".", G_MODULE_SUFFIX, NULL);
235 if ((dep_plugin = plugin_get_by_filename(path)) == NULL) {
236 debug_print("trying to load %s\n", path);
237 dep_plugin = plugin_load(path, error);
238 if (dep_plugin == NULL) {
245 if (!g_slist_find_custom(dep_plugin->rdeps,
246 (gpointer) filename, list_find_by_string)) {
247 debug_print("adding %s to %s rdeps\n",
249 dep_plugin->filename);
251 g_slist_append(dep_plugin->rdeps,
259 static void plugin_unload_rdeps(Plugin *plugin)
261 GSList *cur = plugin->rdeps;
262 debug_print("removing %s rdeps\n", plugin->filename);
264 gchar *file = (gchar *)cur->data;
265 Plugin *rdep_plugin = file?plugin_get_by_filename(file):NULL;
266 debug_print(" rdep %s: %p\n", file, rdep_plugin);
268 plugin_unload(rdep_plugin);
273 g_slist_free(plugin->rdeps);
274 plugin->rdeps = NULL;
277 static void plugin_remove_from_unloaded_list (const gchar *filename)
279 GSList *item = g_slist_find_custom(unloaded_plugins,
280 (gpointer) filename, (GCompareFunc)list_find_by_plugin_filename);
281 Plugin *unloaded_plugin = item ? ((Plugin *)item->data):NULL;
282 if (unloaded_plugin != NULL) {
283 debug_print("removing %s from unloaded list\n", unloaded_plugin->filename);
284 unloaded_plugins = g_slist_remove(unloaded_plugins, unloaded_plugin);
285 g_module_close(unloaded_plugin->module);
286 g_free(unloaded_plugin->filename);
287 g_free(unloaded_plugin->error);
288 g_free(unloaded_plugin);
292 static gchar *plugin_check_features(struct PluginFeature *features) {
294 GSList *cur = plugins;
296 if (features == NULL)
298 for(; cur; cur = cur->next) {
299 Plugin *p = (Plugin *)cur->data;
300 struct PluginFeature *cur_features = p->provides();
301 if (p->unloaded_hidden)
303 for (j = 0; cur_features[j].type != PLUGIN_NOTHING; j++) {
304 for (i = 0; features[i].type != PLUGIN_NOTHING; i++) {
305 if (cur_features[j].type == features[i].type &&
306 !strcmp(cur_features[j].subtype, features[i].subtype)) {
307 return g_strdup_printf(_(
308 "This plugin provides %s (%s), which is "
309 "already provided by the %s plugin."),
310 _(plugin_feature_names[features[i].type]),
311 _(features[i].subtype),
321 static gboolean plugin_licence_check(const gchar *licence) {
325 if (licence != NULL) {
326 len = strlen(licence);
329 g_warning("plugin licence check failed: empty licence\n");
332 while (plugin_licence_tokens[i] != NULL) {
333 gchar *found = g_strstr_len(licence, len, plugin_licence_tokens[i]);
335 gint tlen = strlen(plugin_licence_tokens[i]);
336 if (len != tlen) { /* not a single license */
337 if (((found == licence) && (!IS_LICENCE_SEP(licence[tlen])))
338 || (!IS_LICENCE_SEP(*(found - 1)))
339 || (!IS_LICENCE_SEP(*(found + tlen)))) {
340 debug_print("plugin licence check failed: invalid separator\n");
344 debug_print("plugin licence check passed: %s found\n", plugin_licence_tokens[i]);
349 debug_print("plugin licence check failed: %s is not a valid licence\n", licence);
356 * \param filename The filename of the plugin to load
357 * \param error The location where an error string can be stored
358 * \return the plugin on success, NULL otherwise
360 Plugin *plugin_load(const gchar *filename, gchar **error)
363 gint (*plugin_init) (gchar **error);
364 gpointer plugin_name, plugin_desc, plugin_version;
365 const gchar *(*plugin_type)(void);
366 const gchar *(*plugin_licence)(void);
367 struct PluginFeature *(*plugin_provides)(void);
369 START_TIMING((filename?filename:"NULL plugin"));
370 cm_return_val_if_fail(filename != NULL, NULL);
371 cm_return_val_if_fail(error != NULL, NULL);
373 /* check duplicate plugin path name */
374 if (plugin_is_loaded(filename)) {
375 plugin = plugin_get_by_filename(filename);
376 if (plugin->unloaded_hidden) {
380 *error = g_strdup(_("Plugin already loaded"));
385 plugin_remove_from_unloaded_list(filename);
387 if (plugin_load_deps(filename, error) < 0)
389 plugin = g_new0(Plugin, 1);
390 if (plugin == NULL) {
391 *error = g_strdup(_("Failed to allocate memory for Plugin"));
395 debug_print("trying to load `%s'\n", filename);
396 plugin->module = g_module_open(filename, 0);
397 if (plugin->module == NULL) {
398 *error = g_strdup(g_module_error());
404 if (!g_module_symbol(plugin->module, "plugin_name", &plugin_name) ||
405 !g_module_symbol(plugin->module, "plugin_desc", &plugin_desc) ||
406 !g_module_symbol(plugin->module, "plugin_version", &plugin_version) ||
407 !g_module_symbol(plugin->module, "plugin_type", (gpointer)&plugin_type) ||
408 !g_module_symbol(plugin->module, "plugin_licence", (gpointer)&plugin_licence) ||
409 !g_module_symbol(plugin->module, "plugin_provides", (gpointer)&plugin_provides) ||
410 !g_module_symbol(plugin->module, "plugin_init", (gpointer)&plugin_init)) {
411 *error = g_strdup(g_module_error());
412 if (plugin->unloaded_hidden)
414 g_module_close(plugin->module);
419 if (plugin_licence_check(plugin_licence()) != TRUE) {
420 *error = g_strdup(_("This module is not licensed under a GPL v3 or later compatible license."));
421 if (plugin->unloaded_hidden)
423 g_module_close(plugin->module);
428 if (!strcmp(plugin_type(), "GTK")) {
429 *error = g_strdup(_("This module is for Claws Mail GTK1."));
430 if (plugin->unloaded_hidden)
432 g_module_close(plugin->module);
437 if ((*error = plugin_check_features(plugin_provides())) != NULL) {
438 if (plugin->unloaded_hidden)
440 g_module_close(plugin->module);
444 plugin->name = plugin_name;
445 plugin->desc = plugin_desc;
446 plugin->version = plugin_version;
447 plugin->type = plugin_type;
448 plugin->licence = plugin_licence;
449 plugin->provides = plugin_provides;
450 plugin->filename = g_strdup(filename);
451 plugin->error = NULL;
453 if ((ok = plugin_init(error)) < 0) {
455 plugin->error = g_strdup(*error);
456 unloaded_plugins = g_slist_append(unloaded_plugins, plugin);
460 if (!plugin->unloaded_hidden)
461 plugins = g_slist_append(plugins, plugin);
462 plugin->unloaded_hidden = FALSE;
464 debug_print("Plugin %s (from file %s) loaded\n", plugin->name(), filename);
469 void plugin_unload(Plugin *plugin)
471 gboolean (*plugin_done) (void);
472 gboolean can_unload = TRUE;
474 plugin_unload_rdeps(plugin);
476 if (plugin->unloaded_hidden)
480 plugin_remove_from_unloaded_list(plugin->filename);
483 if (g_module_symbol(plugin->module, "plugin_done", (gpointer) &plugin_done)) {
484 can_unload = plugin_done();
489 if (!RUNNING_ON_VALGRIND) {
490 g_module_close(plugin->module);
493 g_module_close(plugin->module);
495 plugins = g_slist_remove(plugins, plugin);
496 g_free(plugin->filename);
499 plugin->unloaded_hidden = TRUE;
504 void plugin_load_all(const gchar *type)
509 gchar *error = NULL, *block;
511 plugin_types = g_slist_append(plugin_types, g_strdup(type));
513 rcpath = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, COMMON_RC, NULL);
515 block = g_strconcat("PluginsWin32_", type, NULL);
517 block = g_strconcat("Plugins_", type, NULL);
519 if ((pfile = prefs_read_open(rcpath)) == NULL ||
520 (prefs_set_block_label(pfile, block) < 0)) {
523 prefs_file_close(pfile);
528 while (fgets(buf, sizeof(buf), pfile->fp) != NULL) {
533 if ((buf[0] != '\0') && (plugin_load(buf, &error) == NULL)) {
534 g_warning("plugin loading error: %s\n", error);
538 prefs_file_close(pfile);
543 void plugin_unload_all(const gchar *type)
547 list = g_slist_copy(plugins);
548 list = g_slist_reverse(list);
550 for(cur = list; cur != NULL; cur = g_slist_next(cur)) {
551 Plugin *plugin = (Plugin *) cur->data;
553 if (!strcmp(type, plugin->type()))
554 plugin_unload(plugin);
558 cur = g_slist_find_custom(plugin_types, (gpointer) type, list_find_by_string);
561 plugin_types = g_slist_remove(plugin_types, cur);
566 /* Load those plugins we always want to use. No error output; just
568 void plugin_load_standard_plugins (void)
570 static const char *names[] = {
581 gchar *error, *filename;
583 for (i=0; names[i]; i++) {
584 /* Simple hack to check whether the plugin has already
585 * been loaded but checking only for the basename. */
586 GSList *cur = plugins;
587 for(; cur; cur = cur->next) {
588 Plugin *p = (Plugin *)cur->data;
589 if (strstr(p->filename, names[i]))
592 if (!cur) { /* Not yet loaded. */
593 /* FIXME: get_plugin_dir () returns with a trailing
594 * (back)slash; this should be fixed so that we can use
595 * g_module_build_path here. */
597 filename = g_strconcat (get_plugin_dir(),
600 filename = g_strconcat (get_plugin_dir(),
601 names[i], ".", G_MODULE_SUFFIX, NULL);
604 plugin_load(filename, &error);
611 GSList *plugin_get_list(void)
614 GSList *cur = plugins;
615 for (; cur; cur = cur->next) {
616 Plugin *p = (Plugin *)cur->data;
617 if (!p->unloaded_hidden)
618 new = g_slist_prepend(new, p);
620 new = g_slist_reverse(new);
624 Plugin *plugin_get_loaded_by_name(const gchar *name)
626 Plugin *plugin = NULL;
628 new = plugin_get_list();
629 for (cur = new; cur; cur = g_slist_next(cur)) {
630 plugin = (Plugin *)cur->data;
631 if (!g_ascii_strcasecmp(plugin->name(), name))
640 GSList *plugin_get_unloaded_list(void)
642 return g_slist_copy(unloaded_plugins);
645 const gchar *plugin_get_name(Plugin *plugin)
647 return plugin->name();
650 const gchar *plugin_get_desc(Plugin *plugin)
652 return plugin->desc();
655 const gchar *plugin_get_version(Plugin *plugin)
657 return plugin->version();
660 const gchar *plugin_get_error(Plugin *plugin)
662 return plugin->error;
665 /* Generally called in plugin_init() function of each plugin. It check the
666 * minimal and compiled version of claws binary required by the plugin.
667 * If (@minimum_claws_version == 0 || @compiled_claws_version == 0), don't
668 * check the corresponding version.
670 * If an error occurs {
671 * If @error == NULL { don't allocate error string. }
672 * If @error != NULL { error string is allocated and must be freed after
675 * Returns: FALSE if an error occurs, TRUE if all is OK.
677 gint check_plugin_version(guint32 minimum_claws_version,
678 guint32 compiled_claws_version,
679 const gchar *plugin_name,
682 guint32 claws_version = claws_get_version();
684 if (compiled_claws_version != 0 && claws_version > compiled_claws_version) {
686 *error = (plugin_name && *plugin_name)
687 ? g_strdup_printf(_("Your version of Claws Mail is newer than the "
688 "version the '%s' plugin was built with."),
690 : g_strdup(_("Your version of Claws Mail is newer than the "
691 "version the plugin was built with."));
696 if (minimum_claws_version != 0 && claws_version < minimum_claws_version) {
698 *error = (plugin_name && *plugin_name)
699 ? g_strdup_printf(_("Your version of Claws Mail is too old for "
700 "the '%s' plugin."), plugin_name)
701 : g_strdup(_("Your version of Claws Mail is too old for the plugin."));