scripts/openvpn-script.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2012  Intel Corporation. All rights reserved.
   6  *  Copyright (C) 2010,2012-2014  BMW Car IT GmbH.
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License version 2 as
  10  *  published by the Free Software Foundation.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  20  *
  21  */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #include <syslog.h>
  31 #include <libgen.h>
  32
  33 #include <dbus/dbus.h>
  34
  35 extern char **environ;
  36
  37 static void print(const char *format, ...)
  38 {
  39         va_list ap;
  40
  41         va_start(ap, format);
  42         vsyslog(LOG_INFO, format, ap);
  43         va_end(ap);
  44 }
  45
  46 static void append(DBusMessageIter *dict, const char *pattern)
  47 {
  48         DBusMessageIter entry;
  49         const char *key, *value;
  50         char *delim;
  51
  52         delim = strchr(pattern, '=');
  53         *delim = '\0';
  54
  55         key = pattern;
  56         value = delim + 1;
  57
  58         dbus_message_iter_open_container(dict, DBUS_TYPE_DICT_ENTRY,
  59                                                         NULL, &entry);
  60
  61         dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &key);
  62
  63         dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &value);
  64
  65         dbus_message_iter_close_container(dict, &entry);
  66 }
  67
  68 int main(int argc, char *argv[])
  69 {
  70         DBusConnection *conn;
  71         DBusError error;
  72         DBusMessage *msg;
  73         DBusMessageIter iter, dict;
  74         char **envp, *busname, *interface, *path, *reason;
  75         int ret = 0;
  76
  77         openlog(basename(argv[0]), LOG_NDELAY | LOG_PID, LOG_DAEMON);
  78
  79         busname = getenv("CONNMAN_BUSNAME");
  80         interface = getenv("CONNMAN_INTERFACE");
  81         path = getenv("CONNMAN_PATH");
  82
  83         reason = getenv("script_type");
  84
  85         if (!busname || !interface || !path || !reason) {
  86                 print("Required environment variables not set; "
  87                         "bus=%s iface=%s path=%s reason=%s",
  88                         busname, interface, path, reason);
  89                 ret = 1;
  90                 goto out;
  91         }
  92         dbus_error_init(&error);
  93
  94         conn = dbus_bus_get(DBUS_BUS_SYSTEM, &error);
  95         if (!conn) {
  96                 if (dbus_error_is_set(&error)) {
  97                         print("%s", error.message);
  98                         dbus_error_free(&error);
  99                 } else
 100                         print("Failed to get on system bus");
 101
 102                 goto out;
 103         }
 104
 105         msg = dbus_message_new_method_call(busname, path,
 106                                                 interface, "notify");
 107         if (!msg) {
 108                 dbus_connection_unref(conn);
 109                 print("Failed to allocate method call");
 110                 goto out;
 111         }
 112
 113         dbus_message_set_no_reply(msg, TRUE);
 114
 115         dbus_message_append_args(msg,
 116                                  DBUS_TYPE_STRING, &reason,
 117                                  DBUS_TYPE_INVALID);
 118
 119         dbus_message_iter_init_append(msg, &iter);
 120
 121         dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY,
 122                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 123                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_STRING_AS_STRING
 124                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
 125
 126         for (envp = environ; envp && *envp; envp++)
 127                 append(&dict, *envp);
 128
 129         dbus_message_iter_close_container(&iter, &dict);
 130
 131         if (!dbus_connection_send(conn, msg, NULL)) {
 132                 print("Failed to send message");
 133                 goto out;
 134         }
 135
 136         dbus_connection_flush(conn);
 137
 138         dbus_message_unref(msg);
 139
 140         dbus_connection_unref(conn);
 141
 142 out:
 143         closelog();
 144
 145         return ret;
 146 }