*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <stdio.h>
const gchar *(*name) (void);
const gchar *(*desc) (void);
const gchar *(*type) (void);
+ const gchar *(*licence) (void);
+ GSList *rdeps;
};
/**
g_return_val_if_fail(plugin, 1);
g_return_val_if_fail(plugin->filename, 1);
g_return_val_if_fail(filename, 1);
-
return strcmp(filename, plugin->filename);
}
}
}
+static gboolean plugin_is_loaded(const gchar *filename)
+{
+ return (g_slist_find_custom(plugins, filename,
+ (GCompareFunc)list_find_by_plugin_filename) != NULL);
+}
+
+static Plugin *plugin_get_by_filename(const gchar *filename)
+{
+ GSList *cur = plugins;
+ for(; cur; cur = cur->next) {
+ Plugin *p = (Plugin *)cur->data;
+ if (!strcmp(p->filename, filename)) {
+ return p;
+ }
+ }
+ return NULL;
+}
+
+/**
+ * Loads a plugin dependancies
+ *
+ * Plugin dependancies are, optionnaly, listed in a file in
+ * PLUGINDIR/$pluginname.deps.
+ * \param filename The filename of the plugin for which we have to load deps
+ * \param error The location where an error string can be stored
+ * \return 0 on success, -1 otherwise
+ */
+static gint plugin_load_deps(const gchar *filename, gchar **error)
+{
+ gchar *tmp = g_strdup(filename);
+ gchar *deps_file = NULL;
+ FILE *fp = NULL;
+ gchar buf[BUFFSIZE];
+
+ *strrchr(tmp, '.') = '\0';
+ deps_file = g_strconcat(tmp, ".deps", NULL);
+ g_free(tmp);
+
+ fp = g_fopen(deps_file, "rb");
+ g_free(deps_file);
+
+ if (!fp)
+ return 0;
+
+ while (fgets(buf, sizeof(buf), fp) != NULL) {
+ Plugin *dep_plugin = NULL;
+ gchar *path = NULL;
+ buf[strlen(buf)-1]='\0'; /* chop off \n */
+ path = g_strconcat(PLUGINDIR, buf,
+ ".", G_MODULE_SUFFIX, NULL);
+ if ((dep_plugin = plugin_get_by_filename(path)) == NULL) {
+ debug_print("trying to load %s\n", path);
+ dep_plugin = plugin_load(path, error);
+ if (dep_plugin == NULL) {
+ g_free(path);
+ return -1;
+ }
+ }
+ if (!g_slist_find_custom(dep_plugin->rdeps,
+ (gpointer) filename, list_find_by_string)) {
+ debug_print("adding %s to %s rdeps\n",
+ filename,
+ dep_plugin->filename);
+ dep_plugin->rdeps =
+ g_slist_append(dep_plugin->rdeps,
+ g_strdup(filename));
+ }
+ }
+ fclose(fp);
+ return 0;
+}
+
+static void plugin_unload_rdeps(Plugin *plugin)
+{
+ GSList *cur = plugin->rdeps;
+ debug_print("removing %s rdeps\n", plugin->filename);
+ while (cur) {
+ gchar *file = (gchar *)cur->data;
+ Plugin *rdep_plugin = file?plugin_get_by_filename(file):NULL;
+ debug_print(" rdep %s: %p\n", file, rdep_plugin);
+ if (rdep_plugin) {
+ plugin_unload(rdep_plugin);
+ }
+ g_free(file);
+ cur = cur->next;
+ }
+ g_slist_free(plugin->rdeps);
+ plugin->rdeps = NULL;
+}
/**
* Loads a plugin
*
* \param filename The filename of the plugin to load
* \param error The location where an error string can be stored
- * \return 0 on success, -1 otherwise
+ * \return the plugin on success, NULL otherwise
*/
-gint plugin_load(const gchar *filename, gchar **error)
+Plugin *plugin_load(const gchar *filename, gchar **error)
{
Plugin *plugin;
gint (*plugin_init) (gchar **error);
gpointer plugin_name, plugin_desc;
const gchar *(*plugin_type)(void);
+ const gchar *(*plugin_licence)(void);
gint ok;
- g_return_val_if_fail(filename != NULL, -1);
- g_return_val_if_fail(error != NULL, -1);
+ g_return_val_if_fail(filename != NULL, NULL);
+ g_return_val_if_fail(error != NULL, NULL);
- /* check duplicate plugin path name */
- if (g_slist_find_custom(plugins, filename,
- (GCompareFunc)list_find_by_plugin_filename)) {
- *error = g_strdup(_("Plugin already loaded"));
- return -1;
- }
+ /* check duplicate plugin path name */
+ if (plugin_is_loaded(filename)) {
+ *error = g_strdup(_("Plugin already loaded"));
+ return NULL;
+ }
+ if (plugin_load_deps(filename, error) < 0)
+ return NULL;
plugin = g_new0(Plugin, 1);
if (plugin == NULL) {
*error = g_strdup(_("Failed to allocate memory for Plugin"));
- return -1;
+ return NULL;
}
plugin->module = g_module_open(filename, 0);
if (plugin->module == NULL) {
*error = g_strdup(g_module_error());
g_free(plugin);
- return -1;
+ return NULL;
}
if (!g_module_symbol(plugin->module, "plugin_name", &plugin_name) ||
!g_module_symbol(plugin->module, "plugin_desc", &plugin_desc) ||
- !g_module_symbol(plugin->module, "plugin_type", (gpointer *) &plugin_type) ||
- !g_module_symbol(plugin->module, "plugin_init", (gpointer *) &plugin_init)) {
+ !g_module_symbol(plugin->module, "plugin_type", (gpointer)&plugin_type) ||
+ !g_module_symbol(plugin->module, "plugin_licence", (gpointer)&plugin_licence) ||
+ !g_module_symbol(plugin->module, "plugin_init", (gpointer)&plugin_init)) {
*error = g_strdup(g_module_error());
g_module_close(plugin->module);
g_free(plugin);
- return -1;
+ return NULL;
}
+ if (strcmp(plugin_licence(), "GPL")
+ && strncmp(plugin_licence(), "GPL-compatible", strlen("GPL-compatible"))) {
+ *error = g_strdup(_("This module is not licenced under a GPL compatible licence."));
+ g_module_close(plugin->module);
+ g_free(plugin);
+ return NULL;
+ }
+
if (!strcmp(plugin_type(), "GTK")) {
*error = g_strdup(_("This module is for Sylpheed-Claws GTK1."));
g_module_close(plugin->module);
g_free(plugin);
- return -1;
+ return NULL;
}
if ((ok = plugin_init(error)) < 0) {
g_module_close(plugin->module);
g_free(plugin);
- return ok;
+ return NULL;
}
plugin->name = plugin_name;
plugin->desc = plugin_desc;
plugin->type = plugin_type;
+ plugin->licence = plugin_licence;
plugin->filename = g_strdup(filename);
plugins = g_slist_append(plugins, plugin);
debug_print("Plugin %s (from file %s) loaded\n", plugin->name(), filename);
- return 0;
+ return plugin;
}
void plugin_unload(Plugin *plugin)
{
void (*plugin_done) (void);
- if (g_module_symbol(plugin->module, "plugin_done", (gpointer *)&plugin_done)) {
+ plugin_unload_rdeps(plugin);
+
+ if (g_module_symbol(plugin->module, "plugin_done", (gpointer) &plugin_done)) {
plugin_done();
}
break;
g_strstrip(buf);
- if ((buf[0] != '\0') && (plugin_load(buf, &error) < 0)) {
+ if ((buf[0] != '\0') && (plugin_load(buf, &error) == NULL)) {
g_warning("plugin loading error: %s\n", error);
g_free(error);
}
projects / claws.git / blobdiff