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/*
*
* Connection Manager
*
* Copyright (C) 2007-2012 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <dlfcn.h>
#include <glib.h>
#ifdef CONNMAN_PLUGIN_BUILTIN
#undef CONNMAN_PLUGIN_BUILTIN
#endif
#include "connman.h"
/*
* Plugins that are using libraries with threads and their own mainloop
* will crash on exit. This is a bug inside these libraries, but there is
* nothing much that can be done about it.
*/
#ifdef NEED_THREADS
#define PLUGINFLAG (RTLD_NOW | RTLD_NODELETE)
#else
#define PLUGINFLAG (RTLD_NOW)
#endif
static GSList *plugins = NULL;
struct connman_plugin {
void *handle;
gboolean active;
struct connman_plugin_desc *desc;
};
static gint compare_priority(gconstpointer a, gconstpointer b)
{
const struct connman_plugin *plugin1 = a;
const struct connman_plugin *plugin2 = b;
return plugin2->desc->priority - plugin1->desc->priority;
}
static gboolean add_plugin(void *handle, struct connman_plugin_desc *desc)
{
struct connman_plugin *plugin;
if (desc->init == NULL)
return FALSE;
if (g_str_equal(desc->version, CONNMAN_VERSION) == FALSE) {
connman_error("Invalid version %s for %s", desc->version,
desc->description);
return FALSE;
}
plugin = g_try_new0(struct connman_plugin, 1);
if (plugin == NULL)
return FALSE;
plugin->handle = handle;
plugin->active = FALSE;
plugin->desc = desc;
__connman_log_enable(desc->debug_start, desc->debug_stop);
plugins = g_slist_insert_sorted(plugins, plugin, compare_priority);
return TRUE;
}
static gboolean check_plugin(struct connman_plugin_desc *desc,
char **patterns, char **excludes)
{
if (excludes) {
for (; *excludes; excludes++)
if (g_pattern_match_simple(*excludes, desc->name))
break;
if (*excludes) {
connman_info("Excluding %s", desc->description);
return FALSE;
}
}
if (patterns) {
for (; *patterns; patterns++)
if (g_pattern_match_simple(*patterns, desc->name))
break;
if (!*patterns) {
connman_info("Ignoring %s", desc->description);
return FALSE;
}
}
return TRUE;
}
#include "builtin.h"
int __connman_plugin_init(const char *pattern, const char *exclude)
{
gchar **patterns = NULL;
gchar **excludes = NULL;
GSList *list;
GDir *dir;
const gchar *file;
gchar *filename;
unsigned int i;
DBG("");
if (pattern)
patterns = g_strsplit_set(pattern, ":, ", -1);
if (exclude)
excludes = g_strsplit_set(exclude, ":, ", -1);
for (i = 0; __connman_builtin[i]; i++) {
if (check_plugin(__connman_builtin[i],
patterns, excludes) == FALSE)
continue;
add_plugin(NULL, __connman_builtin[i]);
}
dir = g_dir_open(PLUGINDIR, 0, NULL);
if (dir != NULL) {
while ((file = g_dir_read_name(dir)) != NULL) {
void *handle;
struct connman_plugin_desc *desc;
if (g_str_has_prefix(file, "lib") == TRUE ||
g_str_has_suffix(file, ".so") == FALSE)
continue;
filename = g_build_filename(PLUGINDIR, file, NULL);
handle = dlopen(filename, PLUGINFLAG);
if (handle == NULL) {
connman_error("Can't load %s: %s",
filename, dlerror());
g_free(filename);
continue;
}
g_free(filename);
desc = dlsym(handle, "connman_plugin_desc");
if (desc == NULL) {
connman_error("Can't load symbol: %s",
dlerror());
dlclose(handle);
continue;
}
if (check_plugin(desc, patterns, excludes) == FALSE) {
dlclose(handle);
continue;
}
if (add_plugin(handle, desc) == FALSE)
dlclose(handle);
}
g_dir_close(dir);
}
for (list = plugins; list; list = list->next) {
struct connman_plugin *plugin = list->data;
if (plugin->desc->init() < 0)
continue;
plugin->active = TRUE;
}
g_strfreev(patterns);
g_strfreev(excludes);
return 0;
}
void __connman_plugin_cleanup(void)
{
GSList *list;
DBG("");
for (list = plugins; list; list = list->next) {
struct connman_plugin *plugin = list->data;
if (plugin->active == TRUE && plugin->desc->exit)
plugin->desc->exit();
if (plugin->handle != NULL)
dlclose(plugin->handle);
g_free(plugin);
}
g_slist_free(plugins);
}
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