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 <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         g_resolv_unref(wpad->resolv);
  53
  54         g_strfreev(wpad->addrlist);
  55         g_free(wpad->hostname);
  56         g_free(wpad);
  57 }
  58
  59 static void download_pac(struct connman_wpad *wpad, const char *target)
  60 {
  61 }
  62
  63 static void wpad_result(GResolvResultStatus status,
  64                                         char **results, gpointer user_data)
  65 {
  66         struct connman_wpad *wpad = user_data;
  67         const char *ptr;
  68         char *hostname;
  69
  70         DBG("status %d", status);
  71
  72         if (status == G_RESOLV_RESULT_STATUS_SUCCESS) {
  73                 char *url;
  74
  75                 if (results == NULL || g_strv_length(results) == 0)
  76                         goto failed;
  77
  78                 url = g_strdup_printf("http://%s/wpad.dat", wpad->hostname);
  79
  80                 __connman_service_set_proxy_autoconfig(wpad->service, url);
  81
  82                 wpad->addrlist = g_strdupv(results);
  83                 if (wpad->addrlist != NULL)
  84                         download_pac(wpad, "wpad.dat");
  85
  86                 g_free(url);
  87
  88                 return;
  89         }
  90
  91         hostname = wpad->hostname;
  92
  93         if (strlen(hostname) < 6)
  94                 goto failed;
  95
  96         ptr = strchr(hostname + 5, '.');
  97         if (ptr == NULL || strlen(ptr) < 2)
  98                 goto failed;
  99
 100         if (strchr(ptr + 1, '.') == NULL)
 101                 goto failed;
 102
 103         wpad->hostname = g_strdup_printf("wpad.%s", ptr + 1);
 104         g_free(hostname);
 105
 106         DBG("hostname %s", wpad->hostname);
 107
 108         g_resolv_lookup_hostname(wpad->resolv, wpad->hostname,
 109                                                         wpad_result, wpad);
 110
 111         return;
 112
 113 failed:
 114         connman_service_set_proxy_method(wpad->service,
 115                                 CONNMAN_SERVICE_PROXY_METHOD_DIRECT);
 116 }
 117
 118 int __connman_wpad_start(struct connman_service *service)
 119 {
 120         struct connman_wpad *wpad;
 121         const char *domainname;
 122         char **nameservers;
 123         int index;
 124         int i;
 125
 126         DBG("service %p", service);
 127
 128         if (wpad_list == NULL)
 129                 return -EINVAL;
 130
 131         index = __connman_service_get_index(service);
 132         if (index < 0)
 133                 return -EINVAL;
 134
 135         domainname = connman_service_get_domainname(service);
 136         if (domainname == NULL)
 137                 return -EINVAL;
 138
 139         nameservers = connman_service_get_nameservers(service);
 140         if (nameservers == NULL)
 141                 return -EINVAL;
 142
 143         wpad = g_try_new0(struct connman_wpad, 1);
 144         if (wpad == NULL)
 145                 return -ENOMEM;
 146
 147         wpad->service = service;
 148         wpad->resolv = g_resolv_new(index);
 149         if (wpad->resolv == NULL) {
 150                 g_free(wpad);
 151                 return -ENOMEM;
 152         }
 153
 154         if (getenv("CONNMAN_RESOLV_DEBUG"))
 155                 g_resolv_set_debug(wpad->resolv, resolv_debug, "RESOLV");
 156
 157         for (i = 0; nameservers[i] != NULL; i++)
 158                 g_resolv_add_nameserver(wpad->resolv, nameservers[i], 53, 0);
 159
 160         wpad->hostname = g_strdup_printf("wpad.%s", domainname);
 161
 162         DBG("hostname %s", wpad->hostname);
 163
 164         g_resolv_lookup_hostname(wpad->resolv, wpad->hostname,
 165                                                         wpad_result, wpad);
 166
 167         g_hash_table_replace(wpad_list, GINT_TO_POINTER(index), wpad);
 168
 169         return 0;
 170 }
 171
 172 void __connman_wpad_stop(struct connman_service *service)
 173 {
 174         int index;
 175
 176         DBG("service %p", service);
 177
 178         if (wpad_list == NULL)
 179                 return;
 180
 181         index = __connman_service_get_index(service);
 182         if (index < 0)
 183                 return;
 184
 185         g_hash_table_remove(wpad_list, GINT_TO_POINTER(index));
 186 }
 187
 188 int __connman_wpad_init(void)
 189 {
 190         DBG("");
 191
 192         wpad_list = g_hash_table_new_full(g_direct_hash, g_direct_equal,
 193                                                         NULL, free_wpad);
 194
 195         return 0;
 196 }
 197
 198 void __connman_wpad_cleanup(void)
 199 {
 200         DBG("");
 201
 202         g_hash_table_destroy(wpad_list);
 203         wpad_list = NULL;
 204 }