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 <gresolv/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                         return;
  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                 return;
  94
  95         ptr = strchr(hostname + 5, '.');
  96         if (ptr == NULL || strlen(ptr) < 2)
  97                 return;
  98
  99         if (strchr(ptr + 1, '.') == NULL)
 100                 return;
 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
 111 void __connman_wpad_start(struct connman_service *service)
 112 {
 113         struct connman_wpad *wpad;
 114         const char *domainname, *nameserver;
 115         int index;
 116
 117         DBG("service %p", service);
 118
 119         if (wpad_list == NULL)
 120                 return;
 121
 122         index = __connman_service_get_index(service);
 123         if (index < 0)
 124                 return;
 125
 126         domainname = connman_service_get_domainname(service);
 127         if (domainname == NULL)
 128                 return;
 129
 130         nameserver = connman_service_get_nameserver(service);
 131         if (nameserver == NULL)
 132                 return;
 133
 134         wpad = g_try_new0(struct connman_wpad, 1);
 135         if (wpad == NULL)
 136                 return;
 137
 138         wpad->service = service;
 139         wpad->resolv = g_resolv_new(index);
 140         if (wpad->resolv == NULL) {
 141                 g_free(wpad);
 142                 return;
 143         }
 144
 145         if (getenv("CONNMAN_RESOLV_DEBUG"))
 146                 g_resolv_set_debug(wpad->resolv, resolv_debug, "RESOLV");
 147
 148         g_resolv_add_nameserver(wpad->resolv, nameserver, 53, 0);
 149
 150         wpad->hostname = g_strdup_printf("wpad.%s", domainname);
 151
 152         DBG("hostname %s", wpad->hostname);
 153
 154         g_resolv_lookup_hostname(wpad->resolv, wpad->hostname,
 155                                                         wpad_result, wpad);
 156
 157         g_hash_table_replace(wpad_list, GINT_TO_POINTER(index), wpad);
 158 }
 159
 160 void __connman_wpad_stop(struct connman_service *service)
 161 {
 162         int index;
 163
 164         DBG("service %p", service);
 165
 166         if (wpad_list == NULL)
 167                 return;
 168
 169         index = __connman_service_get_index(service);
 170         if (index < 0)
 171                 return;
 172
 173         g_hash_table_remove(wpad_list, GINT_TO_POINTER(index));
 174 }
 175
 176 int __connman_wpad_init(void)
 177 {
 178         DBG("");
 179
 180         wpad_list = g_hash_table_new_full(g_direct_hash, g_direct_equal,
 181                                                         NULL, free_wpad);
 182
 183         return 0;
 184 }
 185
 186 void __connman_wpad_cleanup(void)
 187 {
 188         DBG("");
 189
 190         g_hash_table_destroy(wpad_list);
 191         wpad_list = NULL;
 192 }