3 files changed, 94 insertions, 1 deletions

diff --git a/protocols/nogaim.c b/protocols/nogaim.c
index c9cbb033..9ed3b64b 100644
--- a/protocols/nogaim.c
+++ b/protocols/nogaim.c
@@ -39,24 +39,84 @@
 GSList *connections;
 
 #ifdef WITH_PLUGINS
+GList *plugins = NULL;
+
+static gint pluginscmp(gconstpointer a, gconstpointer b, gpointer data)
+{
+	const struct plugin_info *ia = a;
+	const struct plugin_info *ib = b;
+
+	return g_strcasecmp(ia->name, ib->name);
+}
+
 gboolean load_plugin(char *path)
 {
+	GList *l;
+	struct plugin_info *i;
+	struct plugin_info *info;
+	struct plugin_info * (*info_function) (void) = NULL;
 	void (*init_function) (void);
 
 	GModule *mod = g_module_open(path, G_MODULE_BIND_LAZY);
+	gboolean loaded = FALSE;
 
 	if (!mod) {
 		log_message(LOGLVL_ERROR, "Error loading plugin `%s': %s\n", path, g_module_error());
 		return FALSE;
 	}
 
+	if (g_module_symbol(mod, "init_plugin_info", (gpointer *) &info_function)) {
+		info = info_function();
+
+		if (info->abiver != BITLBEE_ABI_VERSION_CODE) {
+			log_message(LOGLVL_ERROR,
+				    "`%s' uses ABI %u but %u is required\n",
+				    path, info->abiver,
+				    BITLBEE_ABI_VERSION_CODE);
+			g_module_close(mod);
+			return FALSE;
+		}
+
+		if (!info->name || !info->version) {
+			log_message(LOGLVL_ERROR,
+				    "Name or version missing from the "
+				    "plugin info in `%s'\n", path);
+			g_module_close(mod);
+			return FALSE;
+		}
+
+		for (l = plugins; l; l = l->next) {
+			i = l->data;
+
+			if (g_strcasecmp(i->name, info->name) == 0) {
+				loaded = TRUE;
+				break;
+			}
+		}
+
+		if (loaded) {
+			log_message(LOGLVL_WARNING,
+				    "%s plugin already loaded\n",
+				    info->name);
+			g_module_close(mod);
+			return FALSE;
+		}
+	} else {
+		log_message(LOGLVL_WARNING, "Can't find function `init_plugin_info' in `%s'\n", path);
+	}
+
 	if (!g_module_symbol(mod, "init_plugin", (gpointer *) &init_function)) {
 		log_message(LOGLVL_WARNING, "Can't find function `init_plugin' in `%s'\n", path);
+		g_module_close(mod);
 		return FALSE;
 	}
 
-	init_function();
+	if (info_function) {
+		plugins = g_list_insert_sorted_with_data(plugins, info,
+		                                         pluginscmp, NULL);
+	}
 
+	init_function();
 	return TRUE;
 }
 
@@ -86,6 +146,11 @@ void load_plugins(void)
 		g_dir_close(dir);
 	}
 }
+
+GList *get_plugins()
+{
+	return plugins;
+}
 #endif
 
 GList *protocols = NULL;
diff --git a/protocols/nogaim.h b/protocols/nogaim.h
index 40b1ed7b..f5b1f212 100644
--- a/protocols/nogaim.h
+++ b/protocols/nogaim.h
@@ -270,6 +270,20 @@ struct prpl {
 	void *resv5;
 };
 
+struct plugin_info
+{
+	guint abiver;
+	const char *name;
+	const char *version;
+	const char *description;
+	const char *author;
+	const char *url;
+};
+
+#ifdef WITH_PLUGINS
+G_MODULE_EXPORT GList *get_plugins();
+#endif
+
 /* im_api core stuff. */
 void nogaim_init();
 G_MODULE_EXPORT GSList *get_connections();
diff --git a/protocols/skype/skype.c b/protocols/skype/skype.c
index a21af8ef..bd8a1850 100644
--- a/protocols/skype/skype.c
+++ b/protocols/skype/skype.c
@@ -1762,3 +1762,17 @@ void init_plugin(void)
 #endif
 	register_protocol(ret);
 }
+
+struct plugin_info *init_plugin_info(void)
+{
+	static struct plugin_info info = {
+		BITLBEE_ABI_VERSION_CODE,
+		"skype",
+		BITLBEE_VERSION,
+		"Skype protocol plugin",
+		NULL,
+		NULL
+	};
+
+	return &info;
+}