plugins/openconnect.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 <stdlib.h>
  27 #include <string.h>
  28 #include <errno.h>
  29 #include <unistd.h>
  30 #include <net/if.h>
  31
  32 #include <glib.h>
  33
  34 #define CONNMAN_API_SUBJECT_TO_CHANGE
  35 #include <connman/plugin.h>
  36 #include <connman/provider.h>
  37 #include <connman/log.h>
  38 #include <connman/task.h>
  39 #include <connman/ipconfig.h>
  40
  41 #include "vpn.h"
  42
  43 static int oc_notify(DBusMessage *msg, struct connman_provider *provider)
  44 {
  45         DBusMessageIter iter, dict;
  46         const char *reason, *key, *value;
  47         const char *domain = NULL;
  48         char *addressv4 = NULL, *addressv6 = NULL;
  49         char *netmask = NULL, *gateway = NULL;
  50         unsigned char prefix_len = 0;
  51         struct connman_ipaddress *ipaddress;
  52
  53         dbus_message_iter_init(msg, &iter);
  54
  55         dbus_message_iter_get_basic(&iter, &reason);
  56         dbus_message_iter_next(&iter);
  57
  58         if (!provider) {
  59                 connman_error("No provider found");
  60                 return VPN_STATE_FAILURE;
  61         }
  62
  63         if (strcmp(reason, "connect"))
  64                 return VPN_STATE_DISCONNECT;
  65
  66         domain = connman_provider_get_string(provider, "VPN.Domain");
  67
  68         dbus_message_iter_recurse(&iter, &dict);
  69
  70         while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
  71                 DBusMessageIter entry;
  72
  73                 dbus_message_iter_recurse(&dict, &entry);
  74                 dbus_message_iter_get_basic(&entry, &key);
  75                 dbus_message_iter_next(&entry);
  76                 dbus_message_iter_get_basic(&entry, &value);
  77
  78                 if (strcmp(key, "CISCO_CSTP_OPTIONS"))
  79                         DBG("%s = %s", key, value);
  80
  81                 if (!strcmp(key, "VPNGATEWAY"))
  82                         gateway = g_strdup(value);
  83
  84                 if (!strcmp(key, "INTERNAL_IP4_ADDRESS"))
  85                         addressv4 = g_strdup(value);
  86
  87                 if (!strcmp(key, "INTERNAL_IP6_ADDRESS")) {
  88                         addressv6 = g_strdup(value);
  89                         prefix_len = 128;
  90                 }
  91
  92                 if (!strcmp(key, "INTERNAL_IP4_NETMASK"))
  93                         netmask = g_strdup(value);
  94
  95                 if (!strcmp(key, "INTERNAL_IP6_NETMASK")) {
  96                         char *sep;
  97
  98                         /* The netmask contains the address and the prefix */
  99                         sep = strchr(value, '/');
 100                         if (sep != NULL) {
 101                                 unsigned char ip_len = sep - value;
 102
 103                                 addressv6 = g_strndup(value, ip_len);
 104                                 prefix_len = (unsigned char)
 105                                                 strtol(sep + 1, NULL, 10);
 106                         }
 107                 }
 108
 109                 if (!strcmp(key, "INTERNAL_IP4_DNS") ||
 110                                 !strcmp(key, "INTERNAL_IP6_DNS"))
 111                         connman_provider_set_nameservers(provider, value);
 112
 113                 if (!strcmp(key, "CISCO_PROXY_PAC"))
 114                         connman_provider_set_pac(provider, value);
 115
 116                 if (domain == NULL && !strcmp(key, "CISCO_DEF_DOMAIN"))
 117                         domain = value;
 118
 119                 if (g_str_has_prefix(key, "CISCO_SPLIT_INC") == TRUE ||
 120                         g_str_has_prefix(key, "CISCO_IPV6_SPLIT_INC") == TRUE)
 121                         connman_provider_append_route(provider, key, value);
 122
 123                 dbus_message_iter_next(&dict);
 124         }
 125
 126         DBG("%p %p", addressv4, addressv6);
 127
 128         if (addressv4 != NULL)
 129                 ipaddress = connman_ipaddress_alloc(AF_INET);
 130         else if (addressv6 != NULL)
 131                 ipaddress = connman_ipaddress_alloc(AF_INET6);
 132         else
 133                 ipaddress = NULL;
 134
 135         if (ipaddress == NULL) {
 136                 g_free(addressv4);
 137                 g_free(addressv6);
 138                 g_free(netmask);
 139                 g_free(gateway);
 140
 141                 return VPN_STATE_FAILURE;
 142         }
 143
 144         if (addressv4 != NULL)
 145                 connman_ipaddress_set_ipv4(ipaddress, addressv4,
 146                                                 netmask, gateway);
 147         else
 148                 connman_ipaddress_set_ipv6(ipaddress, addressv6,
 149                                                 prefix_len, gateway);
 150         connman_provider_set_ipaddress(provider, ipaddress);
 151         connman_provider_set_domain(provider, domain);
 152
 153         g_free(addressv4);
 154         g_free(addressv6);
 155         g_free(netmask);
 156         g_free(gateway);
 157         connman_ipaddress_free(ipaddress);
 158
 159         return VPN_STATE_CONNECT;
 160 }
 161
 162 static int oc_connect(struct connman_provider *provider,
 163                         struct connman_task *task, const char *if_name)
 164 {
 165         const char *vpnhost, *vpncookie, *cafile, *certsha1, *mtu;
 166         int fd, err;
 167
 168         vpnhost = connman_provider_get_string(provider, "Host");
 169         if (!vpnhost) {
 170                 connman_error("Host not set; cannot enable VPN");
 171                 return -EINVAL;
 172         }
 173
 174         vpncookie = connman_provider_get_string(provider, "OpenConnect.Cookie");
 175         if (!vpncookie) {
 176                 connman_error("OpenConnect.Cookie not set; cannot enable VPN");
 177                 return -EINVAL;
 178         }
 179
 180         certsha1 = connman_provider_get_string(provider,
 181                                                 "OpenConnect.ServerCert");
 182         if (certsha1)
 183                 connman_task_add_argument(task, "--servercert",
 184                                                         (char *)certsha1);
 185
 186         cafile = connman_provider_get_string(provider, "OpenConnect.CACert");
 187         mtu = connman_provider_get_string(provider, "VPN.MTU");
 188
 189         if (cafile)
 190                 connman_task_add_argument(task, "--cafile",
 191                                                         (char *)cafile);
 192         if (mtu)
 193                 connman_task_add_argument(task, "--mtu", (char *)mtu);
 194
 195         connman_task_add_argument(task, "--syslog", NULL);
 196         connman_task_add_argument(task, "--cookie-on-stdin", NULL);
 197
 198         connman_task_add_argument(task, "--script",
 199                                   SCRIPTDIR "/openconnect-script");
 200
 201         connman_task_add_argument(task, "--interface", if_name);
 202
 203         connman_task_add_argument(task, (char *)vpnhost, NULL);
 204
 205         err = connman_task_run(task, vpn_died, provider,
 206                                &fd, NULL, NULL);
 207         if (err < 0) {
 208                 connman_error("openconnect failed to start");
 209                 return -EIO;
 210         }
 211
 212         if (write(fd, vpncookie, strlen(vpncookie)) !=
 213                         (ssize_t)strlen(vpncookie) ||
 214                         write(fd, "\n", 1) != 1) {
 215                 connman_error("openconnect failed to take cookie on stdin");
 216                 return -EIO;
 217         }
 218
 219         return 0;
 220 }
 221
 222 static int oc_save (struct connman_provider *provider, GKeyFile *keyfile)
 223 {
 224         const char *setting;
 225
 226         setting = connman_provider_get_string(provider,
 227                                         "OpenConnect.ServerCert");
 228         if (setting != NULL)
 229                 g_key_file_set_string(keyfile,
 230                                 connman_provider_get_save_group(provider),
 231                                 "OpenConnect.ServerCert", setting);
 232
 233         setting = connman_provider_get_string(provider,
 234                                         "OpenConnect.CACert");
 235         if (setting != NULL)
 236                 g_key_file_set_string(keyfile,
 237                                 connman_provider_get_save_group(provider),
 238                                 "OpenConnect.CACert", setting);
 239
 240         setting = connman_provider_get_string(provider,
 241                                         "VPN.MTU");
 242         if (setting != NULL)
 243                 g_key_file_set_string(keyfile,
 244                                 connman_provider_get_save_group(provider),
 245                                 "VPN.MTU", setting);
 246
 247         return 0;
 248 }
 249
 250 static int oc_error_code(int exit_code)
 251 {
 252
 253         switch (exit_code) {
 254         case 1:
 255                 return CONNMAN_PROVIDER_ERROR_CONNECT_FAILED;
 256         case 2:
 257                 return CONNMAN_PROVIDER_ERROR_LOGIN_FAILED;
 258         default:
 259                 return CONNMAN_PROVIDER_ERROR_UNKNOWN;
 260         }
 261 }
 262
 263 static struct vpn_driver vpn_driver = {
 264         .notify         = oc_notify,
 265         .connect        = oc_connect,
 266         .error_code     = oc_error_code,
 267         .save           = oc_save,
 268 };
 269
 270 static int openconnect_init(void)
 271 {
 272         return vpn_register("openconnect", &vpn_driver, OPENCONNECT);
 273 }
 274
 275 static void openconnect_exit(void)
 276 {
 277         vpn_unregister("openconnect");
 278 }
 279
 280 CONNMAN_PLUGIN_DEFINE(openconnect, "OpenConnect VPN plugin", VERSION,
 281         CONNMAN_PLUGIN_PRIORITY_DEFAULT, openconnect_init, openconnect_exit)