plugins/pacrunner.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 <string.h>
  28
  29 #include <gdbus.h>
  30
  31 #define CONNMAN_API_SUBJECT_TO_CHANGE
  32 #include <connman/plugin.h>
  33 #include <connman/notifier.h>
  34 #include <connman/dbus.h>
  35 #include <connman/log.h>
  36 #include <connman/proxy.h>
  37
  38 #define PACRUNNER_SERVICE       "org.pacrunner"
  39 #define PACRUNNER_INTERFACE     "org.pacrunner.Manager"
  40 #define PACRUNNER_PATH          "/org/pacrunner/manager"
  41
  42 #define PACRUNNER_CLIENT_INTERFACE      "org.pacrunner.Client"
  43 #define PACRUNNER_CLIENT_PATH           "/org/pacrunner/client"
  44
  45 #define DBUS_TIMEOUT    5000
  46
  47 struct proxy_data {
  48         struct connman_service *service;
  49         char *url;
  50 };
  51
  52 static DBusConnection *connection;
  53 static dbus_bool_t daemon_running = FALSE;
  54
  55 static struct connman_service *default_service = NULL;
  56 static char *current_config = NULL;
  57
  58 static void create_config_reply(DBusPendingCall *call, void *user_data)
  59 {
  60         DBusMessage *reply = dbus_pending_call_steal_reply(call);
  61         const char *path;
  62
  63         DBG("");
  64
  65         if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR) {
  66                 connman_error("Failed to create proxy configuration");
  67                 goto done;
  68         }
  69
  70         if (dbus_message_get_args(reply, NULL, DBUS_TYPE_OBJECT_PATH, &path,
  71                                                 DBUS_TYPE_INVALID) == FALSE)
  72                 goto done;
  73
  74         g_free(current_config);
  75         current_config = g_strdup(path);
  76
  77 done:
  78         dbus_message_unref(reply);
  79 }
  80
  81 static void append_string(DBusMessageIter *iter, void *user_data)
  82 {
  83         dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, user_data);
  84 }
  85
  86 static void append_string_list(DBusMessageIter *iter, void *user_data)
  87 {
  88         char **list = user_data;
  89         int i;
  90
  91         for (i = 0; list[i] != NULL; i++)
  92                 dbus_message_iter_append_basic(iter,
  93                                         DBUS_TYPE_STRING, &list[i]);
  94 }
  95
  96 static void create_proxy_configuration(void)
  97 {
  98         DBusMessage *msg;
  99         DBusMessageIter iter, dict;
 100         DBusPendingCall *call;
 101         dbus_bool_t result;
 102         char *interface;
 103         const char *method;
 104         const char *str;
 105         char **str_list;
 106
 107         if (default_service == NULL)
 108                 return;
 109
 110         DBG("");
 111
 112         msg = dbus_message_new_method_call(PACRUNNER_SERVICE, PACRUNNER_PATH,
 113                         PACRUNNER_INTERFACE, "CreateProxyConfiguration");
 114         if (msg == NULL)
 115                 return;
 116
 117         dbus_message_set_auto_start(msg, FALSE);
 118
 119         dbus_message_iter_init_append(msg, &iter);
 120         connman_dbus_dict_open(&iter, &dict);
 121
 122         switch(connman_service_get_proxy_method(default_service)) {
 123         case CONNMAN_SERVICE_PROXY_METHOD_UNKNOWN:
 124                 goto done;
 125         case CONNMAN_SERVICE_PROXY_METHOD_DIRECT:
 126                 method= "direct";
 127                 break;
 128         case CONNMAN_SERVICE_PROXY_METHOD_MANUAL:
 129                 method = "manual";
 130
 131                 str_list = connman_service_get_proxy_servers(default_service);
 132                 if (str_list == NULL)
 133                         goto done;
 134
 135                 connman_dbus_dict_append_array(&dict, "Servers",
 136                                         DBUS_TYPE_STRING, append_string_list,
 137                                         str_list);
 138                 g_strfreev(str_list);
 139
 140                 str_list = connman_service_get_proxy_excludes(default_service);
 141                 if (str_list == NULL)
 142                         break;
 143
 144                 connman_dbus_dict_append_array(&dict, "Excludes",
 145                                         DBUS_TYPE_STRING, append_string_list,
 146                                         str_list);
 147                 g_strfreev(str_list);
 148
 149                 break;
 150         case CONNMAN_SERVICE_PROXY_METHOD_AUTO:
 151                 method = "auto";
 152
 153                 str = connman_service_get_proxy_url(default_service);
 154                 if (str == NULL) {
 155                         str = connman_service_get_proxy_autoconfig(
 156                                                         default_service);
 157                         if (str == NULL)
 158                                 goto done;
 159                 }
 160
 161                 connman_dbus_dict_append_basic(&dict, "URL",
 162                                         DBUS_TYPE_STRING, &str);
 163                 break;
 164         }
 165
 166         connman_dbus_dict_append_basic(&dict, "Method",
 167                                 DBUS_TYPE_STRING, &method);
 168
 169         interface = connman_service_get_interface(default_service);
 170         if (interface != NULL) {
 171                 connman_dbus_dict_append_basic(&dict, "Interface",
 172                                                 DBUS_TYPE_STRING, &interface);
 173                 g_free(interface);
 174         }
 175
 176         str = connman_service_get_domainname(default_service);
 177         if (str != NULL)
 178                 connman_dbus_dict_append_array(&dict, "Domains",
 179                                         DBUS_TYPE_STRING, append_string, &str);
 180
 181         str = connman_service_get_nameserver(default_service);
 182         if (str != NULL)
 183                 connman_dbus_dict_append_array(&dict, "Nameservers",
 184                                         DBUS_TYPE_STRING, append_string, &str);
 185
 186         connman_dbus_dict_close(&iter, &dict);
 187
 188         result = dbus_connection_send_with_reply(connection, msg,
 189                                                         &call, DBUS_TIMEOUT);
 190
 191         if (result == FALSE || call == NULL)
 192                 goto done;
 193
 194         dbus_pending_call_set_notify(call, create_config_reply, NULL, NULL);
 195
 196         dbus_pending_call_unref(call);
 197
 198 done:
 199         dbus_message_unref(msg);
 200 }
 201
 202 static void destroy_config_reply(DBusPendingCall *call, void *user_data)
 203 {
 204         DBusMessage *reply = dbus_pending_call_steal_reply(call);
 205
 206         DBG("");
 207
 208         if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR)
 209                 connman_error("Failed to destoy proxy configuration");
 210
 211         dbus_message_unref(reply);
 212 }
 213
 214 static void destroy_proxy_configuration(void)
 215 {
 216         DBusMessage *msg;
 217         DBusPendingCall *call;
 218         dbus_bool_t result;
 219
 220         if (current_config == NULL)
 221                 return;
 222
 223         DBG("");
 224
 225         msg = dbus_message_new_method_call(PACRUNNER_SERVICE, PACRUNNER_PATH,
 226                         PACRUNNER_INTERFACE, "DestroyProxyConfiguration");
 227         if (msg == NULL)
 228                 return;
 229
 230         dbus_message_set_auto_start(msg, FALSE);
 231
 232         dbus_message_append_args(msg, DBUS_TYPE_OBJECT_PATH, &current_config,
 233                                                         DBUS_TYPE_INVALID);
 234
 235         result = dbus_connection_send_with_reply(connection, msg,
 236                                                         &call, DBUS_TIMEOUT);
 237
 238         dbus_message_unref(msg);
 239
 240         if (result == FALSE || call == NULL)
 241                 return;
 242
 243         dbus_pending_call_set_notify(call, destroy_config_reply, NULL, NULL);
 244
 245         dbus_pending_call_unref(call);
 246
 247         g_free(current_config);
 248         current_config = NULL;
 249 }
 250
 251 static void default_service_changed(struct connman_service *service)
 252 {
 253         DBG("service %p", service);
 254
 255         if (service == default_service)
 256                 return;
 257
 258         default_service = service;
 259
 260         if (daemon_running == FALSE)
 261                 return;
 262
 263         destroy_proxy_configuration();
 264
 265         create_proxy_configuration();
 266 }
 267
 268 static void proxy_changed(struct connman_service *service)
 269 {
 270         DBG("service %p", service);
 271
 272         if (service != default_service)
 273                 return;
 274
 275         if (daemon_running == FALSE)
 276                 return;
 277
 278         destroy_proxy_configuration();
 279
 280         create_proxy_configuration();
 281 }
 282
 283 static struct connman_notifier pacrunner_notifier = {
 284         .name                   = "pacrunner",
 285         .default_changed        = default_service_changed,
 286         .proxy_changed          = proxy_changed,
 287 };
 288
 289 static void pacrunner_connect(DBusConnection *conn, void *user_data)
 290 {
 291         DBG("");
 292
 293         daemon_running = TRUE;
 294
 295         create_proxy_configuration();
 296 }
 297
 298 static void pacrunner_disconnect(DBusConnection *conn, void *user_data)
 299 {
 300         DBG("");
 301
 302         daemon_running = FALSE;
 303
 304         g_free(current_config);
 305         current_config = NULL;
 306 }
 307
 308 static char * parse_url(const char *url)
 309 {
 310         char *scheme, *host, *path, *host_ret;
 311
 312         scheme = g_strdup(url);
 313         if (scheme == NULL)
 314                 return NULL;
 315
 316         if (host_ret == NULL)
 317                 return NULL;
 318
 319         host = strstr(scheme, "://");
 320         if (host != NULL) {
 321                 *host = '\0';
 322                 host += 3;
 323         } else
 324                 host = scheme;
 325
 326         path = strchr(host, '/');
 327         if (path != NULL)
 328                 *(path++) = '\0';
 329
 330         host_ret = g_strdup(host);
 331
 332         g_free(scheme);
 333
 334         return host_ret;
 335 }
 336
 337 static void request_lookup_reply(DBusPendingCall *call, void *user_data)
 338 {
 339         DBusMessage *reply = dbus_pending_call_steal_reply(call);
 340         struct proxy_data *data = user_data;
 341         const char *proxy;
 342
 343         DBG("");
 344
 345         if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR) {
 346                 connman_error("Failed to find URL:%s", data->url);
 347                 proxy = NULL;
 348                 goto done;
 349         }
 350
 351         if (dbus_message_get_args(reply, NULL, DBUS_TYPE_STRING, &proxy,
 352                                                 DBUS_TYPE_INVALID) == FALSE)
 353                 proxy = NULL;
 354
 355 done:
 356         connman_proxy_driver_lookup_notify(data->service, data->url, proxy);
 357
 358         connman_service_unref(data->service);
 359
 360         g_free(data->url);
 361         g_free(data);
 362
 363         dbus_message_unref(reply);
 364 }
 365
 366 static int request_lookup(struct connman_service *service, const char *url)
 367 {
 368         DBusMessage *msg;
 369         DBusPendingCall *call;
 370         dbus_bool_t result;
 371         char *host;
 372         struct proxy_data *data;
 373
 374         DBG("");
 375
 376         if (daemon_running == FALSE)
 377                 return -EINVAL;
 378
 379         msg = dbus_message_new_method_call(PACRUNNER_SERVICE,
 380                                                 PACRUNNER_CLIENT_PATH,
 381                                                 PACRUNNER_CLIENT_INTERFACE,
 382                                                 "FindProxyForURL");
 383         if (msg == NULL)
 384                 return -1;
 385
 386         host = parse_url(url);
 387         if (host == NULL) {
 388                 dbus_message_unref(msg);
 389                 return -EINVAL;
 390         }
 391
 392         data = g_try_new0(struct proxy_data, 1);
 393         if (data == NULL) {
 394                 dbus_message_unref(msg);
 395                 g_free(host);
 396                 return -ENOMEM;
 397         }
 398
 399         data->url = g_strdup(url);
 400         data->service = connman_service_ref(service);
 401
 402         dbus_message_set_auto_start(msg, FALSE);
 403
 404         dbus_message_append_args(msg, DBUS_TYPE_STRING, &url,
 405                                         DBUS_TYPE_STRING, &host,
 406                                         DBUS_TYPE_INVALID);
 407
 408         result = dbus_connection_send_with_reply(connection, msg,
 409                                                         &call, DBUS_TIMEOUT);
 410
 411         dbus_message_unref(msg);
 412
 413         if (result == FALSE || call == NULL) {
 414                 g_free(host);
 415                 g_free(data->url);
 416                 g_free(data);
 417                 return -EINVAL;
 418         }
 419
 420         dbus_pending_call_set_notify(call, request_lookup_reply,
 421                                                         data, NULL);
 422
 423         dbus_pending_call_unref(call);
 424         g_free(host);
 425
 426         return 0;
 427 }
 428
 429 static void cancel_lookup(struct connman_service *service, const char *url)
 430 {
 431         DBG("");
 432 }
 433
 434 static struct connman_proxy_driver pacrunner_proxy = {
 435         .name           = "pacrunnerproxy",
 436         .priority       = CONNMAN_PROXY_PRIORITY_HIGH,
 437         .request_lookup = request_lookup,
 438         .cancel_lookup  = cancel_lookup,
 439 };
 440
 441 static guint pacrunner_watch;
 442
 443 static int pacrunner_init(void)
 444 {
 445         connection = connman_dbus_get_connection();
 446         if (connection == NULL)
 447                 return -EIO;
 448
 449         pacrunner_watch = g_dbus_add_service_watch(connection,
 450                                         PACRUNNER_SERVICE, pacrunner_connect,
 451                                         pacrunner_disconnect, NULL, NULL);
 452         if (pacrunner_watch == 0) {
 453                 dbus_connection_unref(connection);
 454                 return -EIO;
 455         }
 456
 457         connman_notifier_register(&pacrunner_notifier);
 458
 459         connman_proxy_driver_register(&pacrunner_proxy);
 460
 461         return 0;
 462 }
 463
 464 static void pacrunner_exit(void)
 465 {
 466         connman_proxy_driver_unregister(&pacrunner_proxy);
 467
 468         connman_notifier_unregister(&pacrunner_notifier);
 469
 470         g_dbus_remove_watch(connection, pacrunner_watch);
 471
 472         destroy_proxy_configuration();
 473
 474         dbus_connection_unref(connection);
 475 }
 476
 477 CONNMAN_PLUGIN_DEFINE(pacrunner, "PAC runner proxy plugin", VERSION,
 478                 CONNMAN_PLUGIN_PRIORITY_DEFAULT, pacrunner_init, pacrunner_exit)