src/wpad.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2012  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 <errno.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29
  30 #include <gweb/gresolv.h>
  31
  32 #include "connman.h"
  33
  34 struct connman_wpad {
  35         struct connman_service *service;
  36         GResolv *resolv;
  37         char *hostname;
  38         char **addrlist;
  39 };
  40
  41 static GHashTable *wpad_list = NULL;
  42
  43 static void resolv_debug(const char *str, void *data)
  44 {
  45         connman_info("%s: %s\n", (const char *) data, str);
  46 }
  47
  48 static void free_wpad(gpointer data)
  49 {
  50         struct connman_wpad *wpad = data;
  51
  52         connman_service_unref(wpad->service);
  53
  54         g_resolv_unref(wpad->resolv);
  55
  56         g_strfreev(wpad->addrlist);
  57         g_free(wpad->hostname);
  58         g_free(wpad);
  59 }
  60
  61 static void download_pac(struct connman_wpad *wpad, const char *target)
  62 {
  63 }
  64
  65 static void wpad_result(GResolvResultStatus status,
  66                                         char **results, gpointer user_data)
  67 {
  68         struct connman_wpad *wpad = user_data;
  69         const char *ptr;
  70         char *hostname;
  71
  72         DBG("status %d", status);
  73
  74         if (status == G_RESOLV_RESULT_STATUS_SUCCESS) {
  75                 char *url;
  76
  77                 if (!results || g_strv_length(results) == 0)
  78                         goto failed;
  79
  80                 url = g_strdup_printf("http://%s/wpad.dat", wpad->hostname);
  81
  82                 __connman_service_set_proxy_autoconfig(wpad->service, url);
  83
  84                 wpad->addrlist = g_strdupv(results);
  85                 if (wpad->addrlist)
  86                         download_pac(wpad, "wpad.dat");
  87
  88                 g_free(url);
  89
  90                 __connman_service_wispr_start(wpad->service,
  91                                         CONNMAN_IPCONFIG_TYPE_IPV4);
  92
  93                 return;
  94         }
  95
  96         hostname = wpad->hostname;
  97
  98         if (strlen(hostname) < 6)
  99                 goto failed;
 100
 101         ptr = strchr(hostname + 5, '.');
 102         if (!ptr || strlen(ptr) < 2)
 103                 goto failed;
 104
 105         if (!strchr(ptr + 1, '.'))
 106                 goto failed;
 107
 108         wpad->hostname = g_strdup_printf("wpad.%s", ptr + 1);
 109         g_free(hostname);
 110
 111         DBG("hostname %s", wpad->hostname);
 112
 113         g_resolv_lookup_hostname(wpad->resolv, wpad->hostname,
 114                                                         wpad_result, wpad);
 115
 116         return;
 117
 118 failed:
 119         connman_service_set_proxy_method(wpad->service,
 120                                 CONNMAN_SERVICE_PROXY_METHOD_DIRECT);
 121
 122         __connman_service_wispr_start(wpad->service,
 123                                         CONNMAN_IPCONFIG_TYPE_IPV4);
 124 }
 125
 126 int __connman_wpad_start(struct connman_service *service)
 127 {
 128         struct connman_wpad *wpad;
 129         const char *domainname;
 130         char **nameservers;
 131         int index;
 132         int i;
 133
 134         DBG("service %p", service);
 135
 136         if (!wpad_list)
 137                 return -EINVAL;
 138
 139         index = __connman_service_get_index(service);
 140         if (index < 0)
 141                 return -EINVAL;
 142
 143         domainname = connman_service_get_domainname(service);
 144         if (!domainname)
 145                 return -EINVAL;
 146
 147         nameservers = connman_service_get_nameservers(service);
 148         if (!nameservers)
 149                 return -EINVAL;
 150
 151         wpad = g_try_new0(struct connman_wpad, 1);
 152         if (!wpad) {
 153                 g_strfreev(nameservers);
 154                 return -ENOMEM;
 155         }
 156
 157         wpad->resolv = g_resolv_new(index);
 158         if (!wpad->resolv) {
 159                 g_strfreev(nameservers);
 160                 g_free(wpad);
 161                 return -ENOMEM;
 162         }
 163
 164 #if !defined TIZEN_EXT
 165         if (getenv("CONNMAN_RESOLV_DEBUG"))
 166 #endif
 167                 g_resolv_set_debug(wpad->resolv, resolv_debug, "RESOLV");
 168
 169         for (i = 0; nameservers[i]; i++)
 170                 g_resolv_add_nameserver(wpad->resolv, nameservers[i], 53, 0);
 171
 172         g_strfreev(nameservers);
 173
 174         wpad->hostname = g_strdup_printf("wpad.%s", domainname);
 175
 176         DBG("hostname %s", wpad->hostname);
 177
 178         wpad->service = connman_service_ref(service);
 179
 180         g_resolv_lookup_hostname(wpad->resolv, wpad->hostname,
 181                                                         wpad_result, wpad);
 182
 183         g_hash_table_replace(wpad_list, GINT_TO_POINTER(index), wpad);
 184
 185         return 0;
 186 }
 187
 188 void __connman_wpad_stop(struct connman_service *service)
 189 {
 190         int index;
 191
 192         DBG("service %p", service);
 193
 194         if (!wpad_list)
 195                 return;
 196
 197         index = __connman_service_get_index(service);
 198         if (index < 0)
 199                 return;
 200
 201         g_hash_table_remove(wpad_list, GINT_TO_POINTER(index));
 202 }
 203
 204 int __connman_wpad_init(void)
 205 {
 206         DBG("");
 207
 208         wpad_list = g_hash_table_new_full(g_direct_hash, g_direct_equal,
 209                                                         NULL, free_wpad);
 210
 211         return 0;
 212 }
 213
 214 void __connman_wpad_cleanup(void)
 215 {
 216         DBG("");
 217
 218         g_hash_table_destroy(wpad_list);
 219         wpad_list = NULL;
 220 }