src/agent.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 <gdbus.h>
  31
  32 #include "connman.h"
  33
  34 static DBusConnection *connection = NULL;
  35 static guint agent_watch = 0;
  36 static gchar *agent_path = NULL;
  37 static gchar *agent_sender = NULL;
  38
  39 static void agent_free(void)
  40 {
  41         agent_watch = 0;
  42
  43         g_free(agent_sender);
  44         agent_sender = NULL;
  45
  46         g_free(agent_path);
  47         agent_path = NULL;
  48 }
  49
  50 static void agent_disconnect(DBusConnection *connection, void *data)
  51 {
  52         DBG("data %p", data);
  53
  54         agent_free();
  55 }
  56
  57 int __connman_agent_register(const char *sender, const char *path)
  58 {
  59         DBG("sender %s path %s", sender, path);
  60
  61         if (agent_path != NULL)
  62                 return -EEXIST;
  63
  64         agent_sender = g_strdup(sender);
  65         agent_path = g_strdup(path);
  66
  67         agent_watch = g_dbus_add_disconnect_watch(connection, sender,
  68                                                 agent_disconnect, NULL, NULL);
  69
  70         return 0;
  71 }
  72
  73 int __connman_agent_unregister(const char *sender, const char *path)
  74 {
  75         DBG("sender %s path %s", sender, path);
  76
  77         if (agent_path == NULL)
  78                 return -ESRCH;
  79
  80         if (agent_watch > 0)
  81                 g_dbus_remove_watch(connection, agent_watch);
  82
  83         agent_free();
  84
  85         return 0;
  86 }
  87
  88 struct request_input_reply {
  89         struct connman_service *service;
  90         passphrase_cb_t callback;
  91         void *user_data;
  92 };
  93
  94 static void request_input_passphrase_reply(DBusPendingCall *call, void *user_data)
  95 {
  96         struct request_input_reply *passphrase_reply = user_data;
  97         connman_bool_t wps = FALSE;
  98         char *identity = NULL;
  99         char *passphrase = NULL;
 100         char *wpspin = NULL;
 101         char *key;
 102         DBusMessageIter iter, dict;
 103         DBusMessage *reply = dbus_pending_call_steal_reply(call);
 104
 105         if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR)
 106                 goto done;
 107
 108         dbus_message_iter_init(reply, &iter);
 109         dbus_message_iter_recurse(&iter, &dict);
 110         while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
 111                 DBusMessageIter entry, value;
 112
 113                 dbus_message_iter_recurse(&dict, &entry);
 114                 if (dbus_message_iter_get_arg_type(&entry) != DBUS_TYPE_STRING)
 115                         break;
 116
 117                 dbus_message_iter_get_basic(&entry, &key);
 118
 119                 if (g_str_equal(key, "Identity")) {
 120                         dbus_message_iter_next(&entry);
 121                         if (dbus_message_iter_get_arg_type(&entry)
 122                                                         != DBUS_TYPE_VARIANT)
 123                                 break;
 124                         dbus_message_iter_recurse(&entry, &value);
 125                         dbus_message_iter_get_basic(&value, &identity);
 126
 127                 } else if (g_str_equal(key, "Passphrase")) {
 128                         dbus_message_iter_next(&entry);
 129                         if (dbus_message_iter_get_arg_type(&entry) != DBUS_TYPE_VARIANT)
 130                                 break;
 131                         dbus_message_iter_recurse(&entry, &value);
 132                         dbus_message_iter_get_basic(&value, &passphrase);
 133
 134                 } else if (g_str_equal(key, "WPS")) {
 135                         wps = TRUE;
 136
 137                         dbus_message_iter_next(&entry);
 138                         if (dbus_message_iter_get_arg_type(&entry)
 139                                                         != DBUS_TYPE_VARIANT)
 140                                 break;
 141                         dbus_message_iter_recurse(&entry, &value);
 142                         dbus_message_iter_get_basic(&value, &wpspin);
 143                         break;
 144                 }
 145                 dbus_message_iter_next(&dict);
 146         }
 147
 148         if (wps == TRUE) {
 149                 struct connman_network *network;
 150
 151                 network = __connman_service_get_network(
 152                                                 passphrase_reply->service);
 153                 if (network == NULL)
 154                         goto done;
 155
 156                 connman_network_set_bool(network, "WiFi.UseWPS", wps);
 157
 158                 if (wpspin != NULL && strlen(wpspin) > 0)
 159                         connman_network_set_string(network,
 160                                                 "WiFi.PinWPS", wpspin);
 161                 else
 162                         connman_network_set_string(network,
 163                                                 "WiFi.PinWPS", NULL);
 164         }
 165
 166 done:
 167         passphrase_reply->callback(passphrase_reply->service, identity,
 168                                 passphrase, passphrase_reply->user_data);
 169         connman_service_unref(passphrase_reply->service);
 170         dbus_message_unref(reply);
 171         g_free(passphrase_reply);
 172 }
 173
 174 static void request_input_append_alternates(DBusMessageIter *iter,
 175                                                         void *user_data)
 176 {
 177         const char *str = user_data;
 178         char **alternates, **alternative;
 179
 180         if (str == NULL)
 181                 return;
 182
 183         alternates = g_strsplit(str, ",", 0);
 184         if (alternates == NULL)
 185                 return;
 186
 187         for (alternative = alternates; *alternative != NULL; alternative++)
 188                 dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING,
 189                                                                 alternative);
 190
 191         g_strfreev(alternates);
 192 }
 193
 194 static void request_input_append_identity(DBusMessageIter *iter,
 195                                                         void *user_data)
 196 {
 197         char *str = "string";
 198
 199         connman_dbus_dict_append_basic(iter, "Type",
 200                                 DBUS_TYPE_STRING, &str);
 201         str = "Mandatory";
 202         connman_dbus_dict_append_basic(iter, "Requirement",
 203                                 DBUS_TYPE_STRING, &str);
 204 }
 205
 206 static void request_input_append_passphrase(DBusMessageIter *iter,
 207                                                         void *user_data)
 208 {
 209         struct connman_service *service = user_data;
 210         char *value;
 211         const char *phase2;
 212
 213         switch (__connman_service_get_security(service)) {
 214         case CONNMAN_SERVICE_SECURITY_WEP:
 215                 value = "wep";
 216                 break;
 217         case CONNMAN_SERVICE_SECURITY_PSK:
 218                 value = "psk";
 219                 break;
 220         case CONNMAN_SERVICE_SECURITY_8021X:
 221                 phase2 = __connman_service_get_phase2(service);
 222
 223                 if (phase2 != NULL && (
 224                                 g_str_has_suffix(phase2, "GTC") == TRUE ||
 225                                 g_str_has_suffix(phase2, "OTP") == TRUE))
 226                         value = "response";
 227                 else
 228                         value = "passphrase";
 229
 230                 break;
 231         default:
 232                 value = "string";
 233                 break;
 234         }
 235         connman_dbus_dict_append_basic(iter, "Type",
 236                                 DBUS_TYPE_STRING, &value);
 237         value = "Mandatory";
 238         connman_dbus_dict_append_basic(iter, "Requirement",
 239                                 DBUS_TYPE_STRING, &value);
 240
 241         if (__connman_service_wps_enabled(service) == TRUE) {
 242                 connman_dbus_dict_append_array(iter, "Alternates",
 243                                         DBUS_TYPE_STRING,
 244                                         request_input_append_alternates,
 245                                         "WPS");
 246         }
 247 }
 248
 249 static void request_input_append_wps(DBusMessageIter *iter, void *user_data)
 250 {
 251         const char *str = "wpspin";
 252
 253         connman_dbus_dict_append_basic(iter, "Type",
 254                                 DBUS_TYPE_STRING, &str);
 255         str = "alternate";
 256         connman_dbus_dict_append_basic(iter, "Requirement",
 257                                 DBUS_TYPE_STRING, &str);
 258 }
 259
 260 int __connman_agent_request_input(struct connman_service *service,
 261                                 passphrase_cb_t callback, void *user_data)
 262 {
 263         DBusMessage *message;
 264         const char *path;
 265         DBusMessageIter iter;
 266         DBusMessageIter dict;
 267         DBusPendingCall *call;
 268         struct request_input_reply *passphrase_reply;
 269
 270         if (service == NULL || agent_path == NULL || callback == NULL)
 271                 return -ESRCH;
 272
 273         message = dbus_message_new_method_call(agent_sender, agent_path,
 274                                         CONNMAN_AGENT_INTERFACE,
 275                                         "RequestInput");
 276         if (message == NULL)
 277                 return -ENOMEM;
 278
 279         dbus_message_iter_init_append(message, &iter);
 280
 281         path = __connman_service_get_path(service);
 282         dbus_message_iter_append_basic(&iter,
 283                                 DBUS_TYPE_OBJECT_PATH, &path);
 284
 285         connman_dbus_dict_open(&iter, &dict);
 286
 287         if (__connman_service_get_security(service) ==
 288                         CONNMAN_SERVICE_SECURITY_8021X) {
 289                 connman_dbus_dict_append_dict(&dict, "Identity",
 290                                         request_input_append_identity, service);
 291         }
 292
 293         connman_dbus_dict_append_dict(&dict, "Passphrase",
 294                                 request_input_append_passphrase, service);
 295
 296         if (__connman_service_wps_enabled(service) == TRUE) {
 297             connman_dbus_dict_append_dict(&dict, "WPS",
 298                                 request_input_append_wps, NULL);
 299         }
 300
 301         connman_dbus_dict_close(&iter, &dict);
 302
 303         passphrase_reply = g_try_new0(struct request_input_reply, 1);
 304         if (passphrase_reply == NULL) {
 305                 dbus_message_unref(message);
 306                 return -ENOMEM;
 307         }
 308
 309         if (dbus_connection_send_with_reply(connection, message,
 310                                                 &call, -1) == FALSE) {
 311                 dbus_message_unref(message);
 312                 g_free(passphrase_reply);
 313                 return -ESRCH;
 314         }
 315
 316         if (call == NULL) {
 317                 dbus_message_unref(message);
 318                 g_free(passphrase_reply);
 319                 return -ESRCH;
 320         }
 321
 322         passphrase_reply->service = connman_service_ref(service);
 323         passphrase_reply->callback = callback;
 324         passphrase_reply->user_data = user_data;
 325
 326         dbus_pending_call_set_notify(call, request_input_passphrase_reply,
 327                                 passphrase_reply, NULL);
 328
 329         dbus_message_unref(message);
 330
 331         return -EIO;
 332 }
 333
 334 struct report_error_data {
 335         struct connman_service *service;
 336         report_error_cb_t callback;
 337         void *user_data;
 338 };
 339
 340 static void report_error_reply(DBusPendingCall *call, void *user_data)
 341 {
 342         struct report_error_data *report_error = user_data;
 343         DBusMessage *reply = dbus_pending_call_steal_reply(call);
 344         gboolean retry = FALSE;
 345         const char *dbus_err;
 346
 347         if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR) {
 348                 dbus_err = dbus_message_get_error_name(reply);
 349                 if (dbus_err != NULL &&
 350                         strcmp(dbus_err,
 351                                 CONNMAN_AGENT_INTERFACE ".Error.Retry") == 0)
 352                         retry = TRUE;
 353         }
 354
 355         report_error->callback(report_error->service, retry,
 356                         report_error->user_data);
 357         connman_service_unref(report_error->service);
 358         g_free(report_error);
 359         dbus_message_unref(reply);
 360 }
 361
 362 int __connman_agent_report_error(struct connman_service *service,
 363                                 const char *error,
 364                                 report_error_cb_t callback, void *user_data)
 365 {
 366         DBusMessage *message;
 367         DBusMessageIter iter;
 368         const char *path;
 369         struct report_error_data *report_error;
 370         DBusPendingCall *call;
 371
 372         if (service == NULL || agent_path == NULL || error == NULL ||
 373                 callback == NULL)
 374                 return -ESRCH;
 375
 376         message = dbus_message_new_method_call(agent_sender, agent_path,
 377                                         CONNMAN_AGENT_INTERFACE,
 378                                         "ReportError");
 379         if (message == NULL)
 380                 return -ENOMEM;
 381
 382         dbus_message_iter_init_append(message, &iter);
 383
 384         path = __connman_service_get_path(service);
 385         dbus_message_iter_append_basic(&iter,
 386                                 DBUS_TYPE_OBJECT_PATH, &path);
 387         dbus_message_iter_append_basic(&iter,
 388                                 DBUS_TYPE_STRING, &error);
 389
 390         report_error = g_try_new0(struct report_error_data, 1);
 391         if (report_error == NULL) {
 392                 dbus_message_unref(message);
 393                 return -ENOMEM;
 394         }
 395
 396         if (dbus_connection_send_with_reply(connection, message,
 397                                                 &call, -1) == FALSE) {
 398                 dbus_message_unref(message);
 399                 g_free(report_error);
 400                 return -ESRCH;
 401         }
 402
 403         if (call == NULL) {
 404                 dbus_message_unref(message);
 405                 g_free(report_error);
 406                 return -ESRCH;
 407         }
 408
 409         report_error->service = connman_service_ref(service);
 410         report_error->callback = callback;
 411         report_error->user_data = user_data;
 412         dbus_pending_call_set_notify(call, report_error_reply,
 413                                 report_error, NULL);
 414         dbus_message_unref(message);
 415
 416         return -EIO;
 417 }
 418
 419 int __connman_agent_init(void)
 420 {
 421         DBG("");
 422
 423         connection = connman_dbus_get_connection();
 424         if (connection == NULL)
 425                 return -1;
 426
 427         return 0;
 428 }
 429
 430 void __connman_agent_cleanup(void)
 431 {
 432         DBusMessage *message;
 433
 434         DBG("");
 435
 436         if (connection == NULL)
 437                 return;
 438
 439         if (agent_watch > 0)
 440                 g_dbus_remove_watch(connection, agent_watch);
 441
 442         if (agent_path == NULL)
 443                 return;
 444
 445         message = dbus_message_new_method_call(agent_sender, agent_path,
 446                                         CONNMAN_AGENT_INTERFACE, "Release");
 447         if (message == NULL)
 448                 return;
 449
 450         dbus_message_set_no_reply(message, TRUE);
 451
 452         g_dbus_send_message(connection, message);
 453
 454         agent_free();
 455
 456         dbus_connection_unref(connection);
 457 }