src/wpad.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  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 <stdlib.h>
  27 #include <string.h>
  28
  29 #include <gweb/gresolv.h>
  30
  31 #include "connman.h"
  32
  33 struct connman_wpad {
  34         struct connman_service *service;
  35         GResolv *resolv;
  36         char *hostname;
  37         char **addrlist;
  38 };
  39
  40 static GHashTable *wpad_list = NULL;
  41
  42 static void resolv_debug(const char *str, void *data)
  43 {
  44         connman_info("%s: %s\n", (const char *) data, str);
  45 }
  46
  47 static void free_wpad(gpointer data)
  48 {
  49         struct connman_wpad *wpad = data;
  50
  51         g_resolv_unref(wpad->resolv);
  52
  53         g_strfreev(wpad->addrlist);
  54         g_free(wpad->hostname);
  55         g_free(wpad);
  56 }
  57
  58 static void download_pac(struct connman_wpad *wpad, const char *target)
  59 {
  60 }
  61
  62 static void wpad_result(GResolvResultStatus status,
  63                                         char **results, gpointer user_data)
  64 {
  65         struct connman_wpad *wpad = user_data;
  66         const char *ptr;
  67         char *hostname;
  68
  69         DBG("status %d", status);
  70
  71         if (status == G_RESOLV_RESULT_STATUS_SUCCESS) {
  72                 char *url;
  73
  74                 if (results == NULL || g_strv_length(results) == 0)
  75                         goto failed;
  76
  77                 url = g_strdup_printf("http://%s/wpad.dat", wpad->hostname);
  78
  79                 __connman_service_set_proxy_autoconfig(wpad->service, url);
  80
  81                 wpad->addrlist = g_strdupv(results);
  82                 if (wpad->addrlist != NULL)
  83                         download_pac(wpad, "wpad.dat");
  84
  85                 g_free(url);
  86
  87                 return;
  88         }
  89
  90         hostname = wpad->hostname;
  91
  92         if (strlen(hostname) < 6)
  93                 goto failed;
  94
  95         ptr = strchr(hostname + 5, '.');
  96         if (ptr == NULL || strlen(ptr) < 2)
  97                 goto failed;
  98
  99         if (strchr(ptr + 1, '.') == NULL)
 100                 goto failed;
 101
 102         wpad->hostname = g_strdup_printf("wpad.%s", ptr + 1);
 103         g_free(hostname);
 104
 105         DBG("hostname %s", wpad->hostname);
 106
 107         g_resolv_lookup_hostname(wpad->resolv, wpad->hostname,
 108                                                         wpad_result, wpad);
 109
 110         return;
 111
 112 failed:
 113         connman_service_set_proxy_method(wpad->service,
 114                                 CONNMAN_SERVICE_PROXY_METHOD_DIRECT);
 115 }
 116
 117 void __connman_wpad_start(struct connman_service *service)
 118 {
 119         struct connman_wpad *wpad;
 120         const char *domainname, *nameserver;
 121         int index;
 122
 123         DBG("service %p", service);
 124
 125         if (wpad_list == NULL)
 126                 return;
 127
 128         index = __connman_service_get_index(service);
 129         if (index < 0)
 130                 return;
 131
 132         domainname = connman_service_get_domainname(service);
 133         if (domainname == NULL)
 134                 return;
 135
 136         nameserver = connman_service_get_nameserver(service);
 137         if (nameserver == NULL)
 138                 return;
 139
 140         wpad = g_try_new0(struct connman_wpad, 1);
 141         if (wpad == NULL)
 142                 return;
 143
 144         wpad->service = service;
 145         wpad->resolv = g_resolv_new(index);
 146         if (wpad->resolv == NULL) {
 147                 g_free(wpad);
 148                 return;
 149         }
 150
 151         if (getenv("CONNMAN_RESOLV_DEBUG"))
 152                 g_resolv_set_debug(wpad->resolv, resolv_debug, "RESOLV");
 153
 154         g_resolv_add_nameserver(wpad->resolv, nameserver, 53, 0);
 155
 156         wpad->hostname = g_strdup_printf("wpad.%s", domainname);
 157
 158         DBG("hostname %s", wpad->hostname);
 159
 160         g_resolv_lookup_hostname(wpad->resolv, wpad->hostname,
 161                                                         wpad_result, wpad);
 162
 163         g_hash_table_replace(wpad_list, GINT_TO_POINTER(index), wpad);
 164 }
 165
 166 void __connman_wpad_stop(struct connman_service *service)
 167 {
 168         int index;
 169
 170         DBG("service %p", service);
 171
 172         if (wpad_list == NULL)
 173                 return;
 174
 175         index = __connman_service_get_index(service);
 176         if (index < 0)
 177                 return;
 178
 179         g_hash_table_remove(wpad_list, GINT_TO_POINTER(index));
 180 }
 181
 182 int __connman_wpad_init(void)
 183 {
 184         DBG("");
 185
 186         wpad_list = g_hash_table_new_full(g_direct_hash, g_direct_equal,
 187                                                         NULL, free_wpad);
 188
 189         return 0;
 190 }
 191
 192 void __connman_wpad_cleanup(void)
 193 {
 194         DBG("");
 195
 196         g_hash_table_destroy(wpad_list);
 197         wpad_list = NULL;
 198 }