2 * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
3 * Copyright (C) 2002-2015 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/>.
21 #include "claws-features.h"
32 #include <glib/gi18n.h>
46 #define PLUGINS_BLOCK_PREFIX "PluginsWin32_"
48 #define PLUGINS_BLOCK_PREFIX "Plugins_"
55 const gchar
*(*name
) (void);
56 const gchar
*(*desc
) (void);
57 const gchar
*(*version
) (void);
58 const gchar
*(*type
) (void);
59 const gchar
*(*licence
) (void);
60 struct PluginFeature
*(*provides
) (void);
64 gboolean unloaded_hidden
;
65 gboolean in_prefix_dir
;
68 const gchar
*plugin_feature_names
[] =
74 N_("a privacy interface"),
80 /* The plugin must be at least under one of these licences and have
81 the corresponding token returned by the plugin_licence function.
83 const gchar
const *plugin_licence_tokens
[] = {
84 "LGPL2.1+", "LGPLv2.1+", "LGPL2.1", "LGPLv2.1",
85 "LGPL3+", "LGPLv3+", "LGPL3", "LGPLv3",
86 "GPL3+", "GPLv3+", "GPL3", "GPLv3",
88 "Apache2.0", "Apache 2.0", "Apache v2.0",
89 "2-clause BSD", "Simplified BSD", "FreeBSD",
90 "3-clause BSD", "New BSD", "Modified BSD",
94 /* Dual (or more) licences are allowed, must be separated by one of these.
96 #define IS_LICENCE_SEP(a) ((a) == ',' || (a) == ';' || (a) == '|' || (a) == '/' || (a) == '\0')
99 * List of all loaded plugins
101 GSList
*plugins
= NULL
;
102 GSList
*plugin_types
= NULL
;
105 * List of plugins unloaded for some fixable reason
107 static GSList
*unloaded_plugins
= NULL
;
109 static gint
list_find_by_string(gconstpointer data
, gconstpointer str
)
111 return strcmp((gchar
*)data
, (gchar
*)str
) ? TRUE
: FALSE
;
114 static gint
list_find_by_plugin_filename(const Plugin
*plugin
, const gchar
*filename
)
116 /* FIXME: There is a problem in case of symlinks or when a
117 user tries to load a plugin with the same name from a
118 different directory. I think it would be better to compare
119 only the basename of the filename here (case-insensitive on
121 cm_return_val_if_fail(plugin
, 1);
122 cm_return_val_if_fail(plugin
->filename
, 1);
123 cm_return_val_if_fail(filename
, 1);
124 return strcmp(filename
, plugin
->filename
);
127 static gboolean
plugin_filename_is_standard_dir(const gchar
*filename
) {
128 return strncmp(filename
, get_plugin_dir(), strlen(get_plugin_dir())) == 0;
131 static gchar
* plugin_canonical_name(const Plugin
*plugin
)
133 if (plugin
->in_prefix_dir
== TRUE
) {
134 if (plugin_filename_is_standard_dir(plugin
->filename
) == TRUE
) {
135 gchar
*plugin_name
= g_path_get_basename(plugin
->filename
);
139 return g_strdup(plugin
->filename
);
142 void plugin_save_list(void)
144 gchar
*rcpath
, *block
;
146 GSList
*type_cur
, *plugin_cur
;
149 for (type_cur
= plugin_types
; type_cur
!= NULL
; type_cur
= g_slist_next(type_cur
)) {
150 rcpath
= g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S
, COMMON_RC
, NULL
);
151 block
= g_strconcat(PLUGINS_BLOCK_PREFIX
, type_cur
->data
, NULL
);
152 if ((pfile
= prefs_write_open(rcpath
)) == NULL
||
153 (prefs_set_block_label(pfile
, block
) < 0)) {
154 g_warning("failed to write plugin list");
160 for (plugin_cur
= plugins
; plugin_cur
!= NULL
; plugin_cur
= g_slist_next(plugin_cur
)) {
161 plugin
= (Plugin
*) plugin_cur
->data
;
163 if (plugin
->unloaded_hidden
)
166 if (!strcmp(plugin
->type(), type_cur
->data
)) {
167 gchar
* name
= plugin_canonical_name(plugin
);
168 int err
= fprintf(pfile
->fp
, "%s\n", name
);
174 for (plugin_cur
= unloaded_plugins
; plugin_cur
!= NULL
; plugin_cur
= g_slist_next(plugin_cur
)) {
175 plugin
= (Plugin
*) plugin_cur
->data
;
177 if (plugin
->unloaded_hidden
)
180 if (!strcmp(plugin
->type(), type_cur
->data
)) {
181 gchar
* name
= plugin_canonical_name(plugin
);
182 int err
= fprintf(pfile
->fp
, "%s\n", name
);
188 if (fprintf(pfile
->fp
, "\n") < 0)
191 if (prefs_file_close(pfile
) < 0)
192 g_warning("failed to write plugin list");
199 g_warning("failed to write plugin list");
200 if (prefs_file_close_revert(pfile
) < 0)
201 g_warning("failed to revert plugin list");
207 static gboolean
plugin_is_loaded(const gchar
*filename
)
209 return (g_slist_find_custom(plugins
, filename
,
210 (GCompareFunc
)list_find_by_plugin_filename
) != NULL
);
213 static Plugin
*plugin_get_by_filename(const gchar
*filename
)
215 GSList
*cur
= plugins
;
216 for(; cur
; cur
= cur
->next
) {
217 Plugin
*p
= (Plugin
*)cur
->data
;
218 if (!strcmp(p
->filename
, filename
)) {
226 * Loads a plugin dependancies
228 * Plugin dependancies are, optionnaly, listed in a file in
229 * get_plugin_dir()/$pluginname.deps.
230 * \param filename The filename of the plugin for which we have to load deps
231 * \param error The location where an error string can be stored
232 * \return 0 on success, -1 otherwise
234 static gint
plugin_load_deps(const gchar
*filename
, gchar
**error
)
237 gchar
*deps_file
= NULL
;
242 tmp
= g_strdup(filename
);
243 if( (p
= strrchr(tmp
, '.')) )
245 deps_file
= g_strconcat(tmp
, ".deps", NULL
);
248 fp
= g_fopen(deps_file
, "rb");
254 while (fgets(buf
, sizeof(buf
), fp
) != NULL
) {
255 Plugin
*dep_plugin
= NULL
;
257 buf
[strlen(buf
)-1]='\0'; /* chop off \n */
258 path
= g_strconcat(get_plugin_dir(), buf
,
259 ".", G_MODULE_SUFFIX
, NULL
);
260 if ((dep_plugin
= plugin_get_by_filename(path
)) == NULL
) {
261 debug_print("trying to load %s\n", path
);
262 dep_plugin
= plugin_load(path
, error
);
263 if (dep_plugin
== NULL
) {
268 dep_plugin
->in_prefix_dir
= TRUE
;
271 if (!g_slist_find_custom(dep_plugin
->rdeps
,
272 (gpointer
) filename
, list_find_by_string
)) {
273 debug_print("adding %s to %s rdeps\n",
275 dep_plugin
->filename
);
277 g_slist_append(dep_plugin
->rdeps
,
285 static void plugin_unload_rdeps(Plugin
*plugin
)
287 GSList
*cur
= plugin
->rdeps
;
288 debug_print("removing %s rdeps\n", plugin
->filename
);
290 gchar
*file
= (gchar
*)cur
->data
;
291 Plugin
*rdep_plugin
= file
?plugin_get_by_filename(file
):NULL
;
292 debug_print(" rdep %s: %p\n", file
, rdep_plugin
);
294 plugin_unload(rdep_plugin
);
299 g_slist_free(plugin
->rdeps
);
300 plugin
->rdeps
= NULL
;
303 static void plugin_remove_from_unloaded_list (const gchar
*filename
)
305 GSList
*item
= g_slist_find_custom(unloaded_plugins
,
306 (gpointer
) filename
, (GCompareFunc
)list_find_by_plugin_filename
);
307 Plugin
*unloaded_plugin
= item
? ((Plugin
*)item
->data
):NULL
;
308 if (unloaded_plugin
!= NULL
) {
309 debug_print("removing %s from unloaded list\n", unloaded_plugin
->filename
);
310 unloaded_plugins
= g_slist_remove(unloaded_plugins
, unloaded_plugin
);
311 g_module_close(unloaded_plugin
->module
);
312 g_free(unloaded_plugin
->filename
);
313 g_free(unloaded_plugin
->error
);
314 g_free(unloaded_plugin
);
318 static gchar
*plugin_check_features(struct PluginFeature
*features
) {
320 GSList
*cur
= plugins
;
322 if (features
== NULL
)
324 for(; cur
; cur
= cur
->next
) {
325 Plugin
*p
= (Plugin
*)cur
->data
;
326 struct PluginFeature
*cur_features
= p
->provides();
327 if (p
->unloaded_hidden
)
329 for (j
= 0; cur_features
[j
].type
!= PLUGIN_NOTHING
; j
++) {
330 for (i
= 0; features
[i
].type
!= PLUGIN_NOTHING
; i
++) {
331 if (cur_features
[j
].type
== features
[i
].type
&&
332 !strcmp(cur_features
[j
].subtype
, features
[i
].subtype
)) {
333 return g_strdup_printf(_(
334 "This plugin provides %s (%s), which is "
335 "already provided by the %s plugin."),
336 _(plugin_feature_names
[features
[i
].type
]),
337 _(features
[i
].subtype
),
347 static gboolean
plugin_licence_check(const gchar
*licence
) {
351 if (licence
!= NULL
) {
352 len
= strlen(licence
);
355 g_warning("plugin licence check failed: empty licence");
358 while (plugin_licence_tokens
[i
] != NULL
) {
359 gchar
*found
= g_strstr_len(licence
, len
, plugin_licence_tokens
[i
]);
361 gint tlen
= strlen(plugin_licence_tokens
[i
]);
362 if (len
!= tlen
) { /* not a single license */
363 if (((found
== licence
) && (!IS_LICENCE_SEP(licence
[tlen
])))
364 || (!IS_LICENCE_SEP(*(found
- 1)))
365 || (!IS_LICENCE_SEP(*(found
+ tlen
)))) {
366 debug_print("plugin licence check failed: invalid separator\n");
370 debug_print("plugin licence check passed: %s found\n", plugin_licence_tokens
[i
]);
375 debug_print("plugin licence check failed: %s is not a valid licence\n", licence
);
379 static Plugin
*plugin_load_in_default_dir(const gchar
*filename
, gchar
**error
)
381 Plugin
*plugin
= NULL
;
382 gchar
*filename_default_dir
= NULL
;
383 gchar
*default_error
= NULL
;
384 gchar
*plugin_name
= g_path_get_basename(filename
);
386 filename_default_dir
= g_strconcat(get_plugin_dir(), plugin_name
, NULL
);
388 debug_print("trying to load %s in default plugin directory %s\n",
389 plugin_name
, get_plugin_dir());
393 plugin
= plugin_load(filename_default_dir
, &default_error
);
395 g_free(filename_default_dir
);
400 plugin
->in_prefix_dir
= TRUE
;
403 g_free(default_error
);
412 * \param filename The filename of the plugin to load
413 * \param error The location where an error string can be stored
414 * \return the plugin on success, NULL otherwise
416 Plugin
*plugin_load(const gchar
*filename
, gchar
**error
)
419 gint (*plugin_init
) (gchar
**error
);
420 gpointer plugin_name
, plugin_desc
, plugin_version
;
421 const gchar
*(*plugin_type
)(void);
422 const gchar
*(*plugin_licence
)(void);
423 struct PluginFeature
*(*plugin_provides
)(void);
426 START_TIMING((filename
?filename
:"NULL plugin"));
427 cm_return_val_if_fail(filename
!= NULL
, NULL
);
428 cm_return_val_if_fail(error
!= NULL
, NULL
);
430 /* check duplicate plugin path name */
431 if (plugin_is_loaded(filename
)) {
432 plugin
= plugin_get_by_filename(filename
);
433 if (plugin
->unloaded_hidden
) {
437 *error
= g_strdup(_("Plugin already loaded"));
442 plugin_remove_from_unloaded_list(filename
);
444 if (plugin_load_deps(filename
, error
) < 0)
446 plugin
= g_new0(Plugin
, 1);
447 if (plugin
== NULL
) {
448 *error
= g_strdup(_("Failed to allocate memory for Plugin"));
452 debug_print("trying to load `%s'\n", filename
);
453 plugin
->module
= g_module_open(filename
, 0);
454 if (plugin
->module
== NULL
) {
455 *error
= g_strdup(g_module_error());
457 if (!plugin_filename_is_standard_dir(filename
))
458 return plugin_load_in_default_dir(filename
, error
);
462 plugin
->in_prefix_dir
= FALSE
;
466 if (!g_module_symbol(plugin
->module
, "plugin_name", &plugin_name
) ||
467 !g_module_symbol(plugin
->module
, "plugin_desc", &plugin_desc
) ||
468 !g_module_symbol(plugin
->module
, "plugin_version", &plugin_version
) ||
469 !g_module_symbol(plugin
->module
, "plugin_type", (gpointer
)&plugin_type
) ||
470 !g_module_symbol(plugin
->module
, "plugin_licence", (gpointer
)&plugin_licence
) ||
471 !g_module_symbol(plugin
->module
, "plugin_provides", (gpointer
)&plugin_provides
) ||
472 !g_module_symbol(plugin
->module
, "plugin_init", (gpointer
)&plugin_init
)) {
473 *error
= g_strdup(g_module_error());
474 if (plugin
->unloaded_hidden
)
476 g_module_close(plugin
->module
);
481 if (plugin_licence_check(plugin_licence()) != TRUE
) {
482 *error
= g_strdup(_("This module is not licensed under a GPL v3 or later compatible license."));
483 if (plugin
->unloaded_hidden
)
485 g_module_close(plugin
->module
);
490 if (!strcmp(plugin_type(), "GTK")) {
491 *error
= g_strdup(_("This module is for Claws Mail GTK1."));
492 if (plugin
->unloaded_hidden
)
494 g_module_close(plugin
->module
);
499 if ((*error
= plugin_check_features(plugin_provides())) != NULL
) {
500 if (plugin
->unloaded_hidden
)
502 g_module_close(plugin
->module
);
506 plugin
->name
= plugin_name
;
507 plugin
->desc
= plugin_desc
;
508 plugin
->version
= plugin_version
;
509 plugin
->type
= plugin_type
;
510 plugin
->licence
= plugin_licence
;
511 plugin
->provides
= plugin_provides
;
512 plugin
->filename
= g_strdup(filename
);
513 plugin
->error
= NULL
;
515 if ((ok
= plugin_init(error
)) < 0) {
517 plugin
->error
= g_strdup(*error
);
518 unloaded_plugins
= g_slist_append(unloaded_plugins
, plugin
);
522 if (!plugin
->unloaded_hidden
)
523 plugins
= g_slist_append(plugins
, plugin
);
524 plugin
->unloaded_hidden
= FALSE
;
526 debug_print("Plugin %s (from file %s) loaded\n", plugin
->name(), filename
);
531 void plugin_unload(Plugin
*plugin
)
533 gboolean (*plugin_done
) (void);
534 gboolean can_unload
= TRUE
;
536 plugin_unload_rdeps(plugin
);
538 if (plugin
->unloaded_hidden
)
542 plugin_remove_from_unloaded_list(plugin
->filename
);
545 if (g_module_symbol(plugin
->module
, "plugin_done", (gpointer
) &plugin_done
)) {
546 can_unload
= plugin_done();
551 if (!RUNNING_ON_VALGRIND
) {
552 g_module_close(plugin
->module
);
555 g_module_close(plugin
->module
);
557 plugins
= g_slist_remove(plugins
, plugin
);
558 g_free(plugin
->filename
);
561 plugin
->unloaded_hidden
= TRUE
;
566 static void replace_old_plugin_name(gchar
*plugin_name
)
568 gchar
*old_name_end
= g_strconcat("_plugin.", G_MODULE_SUFFIX
, NULL
);
569 gchar
*matches
= strstr(plugin_name
, old_name_end
);
572 g_free(old_name_end
);
574 } else if (plugin_name
+ strlen(plugin_name
) != matches
+ strlen(matches
)) {
575 g_free(old_name_end
);
578 gchar
*new_name_end
= g_strconcat(".", G_MODULE_SUFFIX
, NULL
);
579 int offset
= strlen(plugin_name
) - strlen(old_name_end
);
581 debug_print("Replacing old plugin name %s\n", plugin_name
);
583 strncpy(plugin_name
+ offset
, new_name_end
, strlen(old_name_end
) - 1);
584 debug_print(" to %s\n", plugin_name
);
588 void plugin_load_all(const gchar
*type
)
593 gchar
*error
= NULL
, *block
;
595 plugin_types
= g_slist_append(plugin_types
, g_strdup(type
));
597 rcpath
= g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S
, COMMON_RC
, NULL
);
598 block
= g_strconcat(PLUGINS_BLOCK_PREFIX
, type
, NULL
);
599 if ((pfile
= prefs_read_open(rcpath
)) == NULL
||
600 (prefs_set_block_label(pfile
, block
) < 0)) {
603 prefs_file_close(pfile
);
608 while (fgets(buf
, sizeof(buf
), pfile
->fp
) != NULL
) {
613 replace_old_plugin_name(buf
);
615 if ((buf
[0] != '\0') && (plugin_load(buf
, &error
) == NULL
)) {
616 g_warning("plugin loading error: %s", error
);
620 prefs_file_close(pfile
);
625 void plugin_unload_all(const gchar
*type
)
629 list
= g_slist_copy(plugins
);
630 list
= g_slist_reverse(list
);
632 for(cur
= list
; cur
!= NULL
; cur
= g_slist_next(cur
)) {
633 Plugin
*plugin
= (Plugin
*) cur
->data
;
635 if (!strcmp(type
, plugin
->type()))
636 plugin_unload(plugin
);
640 cur
= g_slist_find_custom(plugin_types
, (gpointer
) type
, list_find_by_string
);
643 plugin_types
= g_slist_remove(plugin_types
, cur
);
648 /* Load those plugins we always want to use. No error output; just
650 void plugin_load_standard_plugins (void)
652 static const char *names
[] = {
663 gchar
*error
, *filename
;
665 for (i
=0; names
[i
]; i
++) {
666 /* Simple hack to check whether the plugin has already
667 * been loaded but checking only for the basename. */
668 GSList
*cur
= plugins
;
669 for(; cur
; cur
= cur
->next
) {
670 Plugin
*p
= (Plugin
*)cur
->data
;
671 if (strstr(p
->filename
, names
[i
]))
674 if (!cur
) { /* Not yet loaded. */
675 /* FIXME: get_plugin_dir () returns with a trailing
676 * (back)slash; this should be fixed so that we can use
677 * g_module_build_path here. */
679 filename
= g_strconcat (get_plugin_dir(),
682 filename
= g_strconcat (get_plugin_dir(),
683 names
[i
], ".", G_MODULE_SUFFIX
, NULL
);
686 plugin_load(filename
, &error
);
693 GSList
*plugin_get_list(void)
696 GSList
*cur
= plugins
;
697 for (; cur
; cur
= cur
->next
) {
698 Plugin
*p
= (Plugin
*)cur
->data
;
699 if (!p
->unloaded_hidden
)
700 new = g_slist_prepend(new, p
);
702 new = g_slist_reverse(new);
706 Plugin
*plugin_get_loaded_by_name(const gchar
*name
)
708 Plugin
*plugin
= NULL
;
710 new = plugin_get_list();
711 for (cur
= new; cur
; cur
= g_slist_next(cur
)) {
712 plugin
= (Plugin
*)cur
->data
;
713 if (!g_ascii_strcasecmp(plugin
->name(), name
))
722 GSList
*plugin_get_unloaded_list(void)
724 return g_slist_copy(unloaded_plugins
);
727 const gchar
*plugin_get_name(Plugin
*plugin
)
729 return plugin
->name();
732 const gchar
*plugin_get_desc(Plugin
*plugin
)
734 return plugin
->desc();
737 const gchar
*plugin_get_version(Plugin
*plugin
)
739 return plugin
->version();
742 const gchar
*plugin_get_error(Plugin
*plugin
)
744 return plugin
->error
;
747 /* Generally called in plugin_init() function of each plugin. It check the
748 * minimal and compiled version of claws binary required by the plugin.
749 * If (@minimum_claws_version == 0 || @compiled_claws_version == 0), don't
750 * check the corresponding version.
752 * If an error occurs {
753 * If @error == NULL { don't allocate error string. }
754 * If @error != NULL { error string is allocated and must be freed after
757 * Returns: FALSE if an error occurs, TRUE if all is OK.
759 gint
check_plugin_version(guint32 minimum_claws_version
,
760 guint32 compiled_claws_version
,
761 const gchar
*plugin_name
,
764 guint32 claws_version
= claws_get_version();
766 if (compiled_claws_version
!= 0 && claws_version
> compiled_claws_version
) {
768 *error
= (plugin_name
&& *plugin_name
)
769 ? g_strdup_printf(_("Your version of Claws Mail is newer than the "
770 "version the '%s' plugin was built with."),
772 : g_strdup(_("Your version of Claws Mail is newer than the "
773 "version the plugin was built with."));
778 if (minimum_claws_version
!= 0 && claws_version
< minimum_claws_version
) {
780 *error
= (plugin_name
&& *plugin_name
)
781 ? g_strdup_printf(_("Your version of Claws Mail is too old for "
782 "the '%s' plugin."), plugin_name
)
783 : g_strdup(_("Your version of Claws Mail is too old for the plugin."));