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         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 || 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)
  84                         download_pac(wpad, "wpad.dat");
  85
  86                 g_free(url);
  87
  88                 __connman_wispr_start(wpad->service,
  89                                         CONNMAN_IPCONFIG_TYPE_IPV4);
  90
  91                 return;
  92         }
  93
  94         hostname = wpad->hostname;
  95
  96         if (strlen(hostname) < 6)
  97                 goto failed;
  98
  99         ptr = strchr(hostname + 5, '.');
 100         if (!ptr || strlen(ptr) < 2)
 101                 goto failed;
 102
 103         if (!strchr(ptr + 1, '.'))
 104                 goto failed;
 105
 106         wpad->hostname = g_strdup_printf("wpad.%s", ptr + 1);
 107         g_free(hostname);
 108
 109         DBG("hostname %s", wpad->hostname);
 110
 111         g_resolv_lookup_hostname(wpad->resolv, wpad->hostname,
 112                                                         wpad_result, wpad);
 113
 114         return;
 115
 116 failed:
 117         connman_service_set_proxy_method(wpad->service,
 118                                 CONNMAN_SERVICE_PROXY_METHOD_DIRECT);
 119
 120         __connman_wispr_start(wpad->service,
 121                                         CONNMAN_IPCONFIG_TYPE_IPV4);
 122 }
 123
 124 int __connman_wpad_start(struct connman_service *service)
 125 {
 126         struct connman_wpad *wpad;
 127         const char *domainname;
 128         char **nameservers;
 129         int index;
 130         int i;
 131
 132         DBG("service %p", service);
 133
 134         if (!wpad_list)
 135                 return -EINVAL;
 136
 137         index = __connman_service_get_index(service);
 138         if (index < 0)
 139                 return -EINVAL;
 140
 141         domainname = connman_service_get_domainname(service);
 142         if (!domainname)
 143                 return -EINVAL;
 144
 145         nameservers = connman_service_get_nameservers(service);
 146         if (!nameservers)
 147                 return -EINVAL;
 148
 149         wpad = g_try_new0(struct connman_wpad, 1);
 150         if (!wpad) {
 151                 g_strfreev(nameservers);
 152                 return -ENOMEM;
 153         }
 154
 155         wpad->service = service;
 156         wpad->resolv = g_resolv_new(index);
 157         if (!wpad->resolv) {
 158                 g_strfreev(nameservers);
 159                 g_free(wpad);
 160                 return -ENOMEM;
 161         }
 162
 163         if (getenv("CONNMAN_RESOLV_DEBUG"))
 164                 g_resolv_set_debug(wpad->resolv, resolv_debug, "RESOLV");
 165
 166         for (i = 0; nameservers[i]; i++)
 167                 g_resolv_add_nameserver(wpad->resolv, nameservers[i], 53, 0);
 168
 169         g_strfreev(nameservers);
 170
 171         wpad->hostname = g_strdup_printf("wpad.%s", domainname);
 172
 173         DBG("hostname %s", wpad->hostname);
 174
 175         g_resolv_lookup_hostname(wpad->resolv, wpad->hostname,
 176                                                         wpad_result, wpad);
 177
 178         connman_service_ref(service);
 179         g_hash_table_replace(wpad_list, GINT_TO_POINTER(index), wpad);
 180
 181         return 0;
 182 }
 183
 184 void __connman_wpad_stop(struct connman_service *service)
 185 {
 186         int index;
 187
 188         DBG("service %p", service);
 189
 190         if (!wpad_list)
 191                 return;
 192
 193         index = __connman_service_get_index(service);
 194         if (index < 0)
 195                 return;
 196
 197         if (g_hash_table_remove(wpad_list, GINT_TO_POINTER(index)))
 198                 connman_service_unref(service);
 199 }
 200
 201 int __connman_wpad_init(void)
 202 {
 203         DBG("");
 204
 205         wpad_list = g_hash_table_new_full(g_direct_hash, g_direct_equal,
 206                                                         NULL, free_wpad);
 207
 208         return 0;
 209 }
 210
 211 void __connman_wpad_cleanup(void)
 212 {
 213         DBG("");
 214
 215         g_hash_table_destroy(wpad_list);
 216         wpad_list = NULL;
 217 }