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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2009 Marcel Holtmann <marcel@holtmann.org>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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 <errno.h>
#include <dlfcn.h>
#include <string.h>
#include <sys/stat.h>
#include <bluetooth/bluetooth.h>
#include <glib.h>
#include "plugin.h"
#include "logging.h"
#include "hcid.h"
#include "btio.h"
static GSList *plugins = NULL;
struct bluetooth_plugin {
void *handle;
struct bluetooth_plugin_desc *desc;
};
static gboolean add_plugin(void *handle, struct bluetooth_plugin_desc *desc)
{
struct bluetooth_plugin *plugin;
if (desc->init == NULL)
return FALSE;
plugin = g_try_new0(struct bluetooth_plugin, 1);
if (plugin == NULL)
return FALSE;
plugin->handle = handle;
plugin->desc = desc;
if (desc->init() < 0) {
g_free(plugin);
return FALSE;
}
plugins = g_slist_append(plugins, plugin);
return TRUE;
}
static gboolean is_disabled(const char *name, char **list)
{
int i;
for (i = 0; list[i] != NULL; i++) {
char *str;
gboolean equal;
str = g_strdup_printf("%s.so", list[i]);
equal = g_str_equal(str, name);
g_free(str);
if (equal)
return TRUE;
}
return FALSE;
}
gboolean plugin_init(GKeyFile *config)
{
GDir *dir;
const gchar *file;
gchar **disabled;
if (strlen(PLUGINDIR) == 0)
return FALSE;
/* Make a call to BtIO API so its symbols got resolved before the
* plugins are loaded. */
bt_io_error_quark();
if (config)
disabled = g_key_file_get_string_list(config, "General",
"DisablePlugins",
NULL, NULL);
else
disabled = NULL;
debug("Loading plugins %s", PLUGINDIR);
dir = g_dir_open(PLUGINDIR, 0, NULL);
if (!dir) {
g_strfreev(disabled);
return FALSE;
}
while ((file = g_dir_read_name(dir)) != NULL) {
struct bluetooth_plugin_desc *desc;
void *handle;
gchar *filename;
struct stat st;
if (g_str_has_prefix(file, "lib") == TRUE ||
g_str_has_suffix(file, ".so") == FALSE)
continue;
if (disabled && is_disabled(file, disabled))
continue;
filename = g_build_filename(PLUGINDIR, file, NULL);
if (stat(filename, &st) < 0) {
error("Can't find plugin %s: %s", filename,
strerror(errno));
g_free(filename);
continue;
}
handle = dlopen(filename, RTLD_NOW);
if (handle == NULL) {
error("Can't load plugin %s: %s", filename,
dlerror());
g_free(filename);
continue;
}
g_free(filename);
desc = dlsym(handle, "bluetooth_plugin_desc");
if (desc == NULL) {
error("Can't load plugin description: %s", dlerror());
dlclose(handle);
continue;
}
if (add_plugin(handle, desc) == FALSE)
dlclose(handle);
}
g_dir_close(dir);
g_strfreev(disabled);
return TRUE;
}
void plugin_cleanup(void)
{
GSList *list;
debug("Cleanup plugins");
for (list = plugins; list; list = list->next) {
struct bluetooth_plugin *plugin = list->data;
if (plugin->desc->exit)
plugin->desc->exit();
dlclose(plugin->handle);
g_free(plugin);
}
g_slist_free(plugins);
}
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