git.maemo.org Git - connman/blob - src/plugin.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2009  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <dlfcn.h>
  27
  28 #include <glib.h>
  29
  30 #include "connman.h"
  31
  32 static GSList *plugins = NULL;
  33
  34 struct connman_plugin {
  35         void *handle;
  36         struct connman_plugin_desc *desc;
  37 };
  38
  39 static gboolean add_plugin(void *handle, struct connman_plugin_desc *desc)
  40 {
  41         struct connman_plugin *plugin;
  42
  43         if (desc->init == NULL)
  44                 return FALSE;
  45
  46         if (g_str_equal(desc->version, CONNMAN_VERSION) == FALSE) {
  47                 DBG("version mismatch for %s", desc->description);
  48                 return FALSE;
  49         }
  50
  51         plugin = g_try_new0(struct connman_plugin, 1);
  52         if (plugin == NULL)
  53                 return FALSE;
  54
  55         plugin->handle = handle;
  56         plugin->desc = desc;
  57
  58         if (desc->init() < 0) {
  59                 g_free(plugin);
  60                 return FALSE;
  61         }
  62
  63         plugins = g_slist_append(plugins, plugin);
  64
  65         return TRUE;
  66 }
  67
  68 int __connman_plugin_init(const char *pattern, const char *exclude)
  69 {
  70         GDir *dir;
  71         const gchar *file;
  72         gchar *filename;
  73
  74         DBG("");
  75
  76         dir = g_dir_open(PLUGINDIR, 0, NULL);
  77         if (dir != NULL) {
  78                 while ((file = g_dir_read_name(dir)) != NULL) {
  79                         void *handle;
  80                         struct connman_plugin_desc *desc;
  81
  82                         if (g_str_has_prefix(file, "lib") == TRUE ||
  83                                         g_str_has_suffix(file, ".so") == FALSE)
  84                                 continue;
  85
  86                         filename = g_build_filename(PLUGINDIR, file, NULL);
  87
  88                         handle = dlopen(filename, RTLD_NOW);
  89                         if (handle == NULL) {
  90                                 g_warning("Can't load %s: %s", filename,
  91                                                                 dlerror());
  92                                 g_free(filename);
  93                                 continue;
  94                         }
  95
  96                         g_free(filename);
  97
  98                         desc = dlsym(handle, "connman_plugin_desc");
  99                         if (desc == NULL) {
 100                                 g_warning("Can't load symbol: %s", dlerror());
 101                                 dlclose(handle);
 102                                 continue;
 103                         }
 104
 105                         if (exclude != NULL && g_pattern_match_simple(exclude,
 106                                                         desc->name) == TRUE) {
 107                                 DBG("excluding %s", desc->description);
 108                                 dlclose(handle);
 109                                 continue;
 110                         }
 111
 112                         if (pattern != NULL && g_pattern_match_simple(pattern,
 113                                                         desc->name) == FALSE) {
 114                                 DBG("ignoring %s", desc->description);
 115                                 dlclose(handle);
 116                                 continue;
 117                         }
 118
 119                         if (add_plugin(handle, desc) == FALSE)
 120                                 dlclose(handle);
 121                 }
 122
 123                 g_dir_close(dir);
 124         }
 125
 126         return 0;
 127 }
 128
 129 void __connman_plugin_cleanup(void)
 130 {
 131         GSList *list;
 132
 133         DBG("");
 134
 135         for (list = plugins; list; list = list->next) {
 136                 struct connman_plugin *plugin = list->data;
 137
 138                 if (plugin->desc->exit)
 139                         plugin->desc->exit();
 140
 141                 dlclose(plugin->handle);
 142
 143                 g_free(plugin);
 144         }
 145
 146         g_slist_free(plugins);
 147 }