src/wispr.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
  29 #include <gweb/gweb.h>
  30
  31 #include "connman.h"
  32
  33 #define STATUS_URL  "http://www.connman.net/online/status.html"
  34
  35 struct connman_wispr_message {
  36         gboolean has_error;
  37         const char *current_element;
  38         int message_type;
  39         int response_code;
  40         char *login_url;
  41         char *abort_login_url;
  42         char *logoff_url;
  43         char *access_procedure;
  44         char *access_location;
  45         char *location_name;
  46 };
  47
  48 struct connman_wispr_portal_context {
  49         struct connman_service *service;
  50         enum connman_ipconfig_type type;
  51
  52         /* Portal/WISPr common */
  53         GWeb *web;
  54         unsigned int token;
  55         guint request_id;
  56
  57         /* WISPr specific */
  58         GWebParser *wispr_parser;
  59         struct connman_wispr_message wispr_msg;
  60 };
  61
  62 struct connman_wispr_portal {
  63         struct connman_wispr_portal_context *ipv4_context;
  64         struct connman_wispr_portal_context *ipv6_context;
  65 };
  66
  67 static GHashTable *wispr_portal_list = NULL;
  68
  69 static void connman_wispr_message_init(struct connman_wispr_message *msg)
  70 {
  71         DBG("");
  72
  73         msg->has_error = FALSE;
  74         msg->current_element = NULL;
  75
  76         msg->message_type = -1;
  77         msg->response_code = -1;
  78
  79         g_free(msg->login_url);
  80         msg->login_url = NULL;
  81
  82         g_free(msg->abort_login_url);
  83         msg->abort_login_url = NULL;
  84
  85         g_free(msg->logoff_url);
  86         msg->logoff_url = NULL;
  87
  88         g_free(msg->access_procedure);
  89         msg->access_procedure = NULL;
  90
  91         g_free(msg->access_location);
  92         msg->access_location = NULL;
  93
  94         g_free(msg->location_name);
  95         msg->location_name = NULL;
  96 }
  97
  98 static void free_connman_wispr_portal_context(struct connman_wispr_portal_context *wp_context)
  99 {
 100         DBG("");
 101
 102         if (wp_context == NULL)
 103                 return;
 104
 105         if (wp_context->token > 0)
 106                 connman_proxy_lookup_cancel(wp_context->token);
 107
 108         if (wp_context->request_id > 0)
 109                 g_web_cancel_request(wp_context->web, wp_context->request_id);
 110
 111         g_web_unref(wp_context->web);
 112
 113         g_web_parser_unref(wp_context->wispr_parser);
 114         connman_wispr_message_init(&wp_context->wispr_msg);
 115
 116         g_free(wp_context);
 117 }
 118
 119 static void free_connman_wispr_portal(gpointer data)
 120 {
 121         struct connman_wispr_portal *wispr_portal = data;
 122
 123         DBG("");
 124
 125         if (wispr_portal == NULL)
 126                 return;
 127
 128         free_connman_wispr_portal_context(wispr_portal->ipv4_context);
 129         free_connman_wispr_portal_context(wispr_portal->ipv6_context);
 130
 131         g_free(wispr_portal);
 132 }
 133
 134 static struct {
 135         const char *str;
 136         enum {
 137                 WISPR_ELEMENT_NONE              = 0,
 138                 WISPR_ELEMENT_ACCESS_PROCEDURE  = 1,
 139                 WISPR_ELEMENT_ACCESS_LOCATION   = 2,
 140                 WISPR_ELEMENT_LOCATION_NAME     = 3,
 141                 WISPR_ELEMENT_LOGIN_URL         = 4,
 142                 WISPR_ELEMENT_ABORT_LOGIN_URL   = 5,
 143                 WISPR_ELEMENT_MESSAGE_TYPE      = 6,
 144                 WISPR_ELEMENT_RESPONSE_CODE     = 7,
 145                 WISPR_ELEMENT_NEXT_URL          = 8,
 146                 WISPR_ELEMENT_DELAY             = 9,
 147                 WISPR_ELEMENT_REPLY_MESSAGE     = 10,
 148                 WISPR_ELEMENT_LOGIN_RESULTS_URL = 11,
 149                 WISPR_ELEMENT_LOGOFF_URL        = 12,
 150         } element;
 151 } wispr_element_map[] = {
 152         { "AccessProcedure",    WISPR_ELEMENT_ACCESS_PROCEDURE  },
 153         { "AccessLocation",     WISPR_ELEMENT_ACCESS_LOCATION   },
 154         { "LocationName",       WISPR_ELEMENT_LOCATION_NAME     },
 155         { "LoginURL",           WISPR_ELEMENT_LOGIN_URL         },
 156         { "AbortLoginURL",      WISPR_ELEMENT_ABORT_LOGIN_URL   },
 157         { "MessageType",        WISPR_ELEMENT_MESSAGE_TYPE      },
 158         { "ResponseCode",       WISPR_ELEMENT_RESPONSE_CODE     },
 159         { "NextURL",            WISPR_ELEMENT_NEXT_URL          },
 160         { "Delay",              WISPR_ELEMENT_DELAY             },
 161         { "ReplyMessage",       WISPR_ELEMENT_REPLY_MESSAGE     },
 162         { "LoginResultsURL",    WISPR_ELEMENT_LOGIN_RESULTS_URL },
 163         { "LogoffURL",          WISPR_ELEMENT_LOGOFF_URL        },
 164         { NULL,                 WISPR_ELEMENT_NONE              },
 165 };
 166
 167 static void xml_wispr_start_element_handler(GMarkupParseContext *context,
 168                                         const gchar *element_name,
 169                                         const gchar **attribute_names,
 170                                         const gchar **attribute_values,
 171                                         gpointer user_data, GError **error)
 172 {
 173         struct connman_wispr_message *msg = user_data;
 174
 175         msg->current_element = element_name;
 176 }
 177
 178 static void xml_wispr_end_element_handler(GMarkupParseContext *context,
 179                                         const gchar *element_name,
 180                                         gpointer user_data, GError **error)
 181 {
 182         struct connman_wispr_message *msg = user_data;
 183
 184         msg->current_element = NULL;
 185 }
 186
 187 static void xml_wispr_text_handler(GMarkupParseContext *context,
 188                                         const gchar *text, gsize text_len,
 189                                         gpointer user_data, GError **error)
 190 {
 191         struct connman_wispr_message *msg = user_data;
 192         int i;
 193
 194         if (msg->current_element == NULL)
 195                 return;
 196
 197         for (i = 0; wispr_element_map[i].str; i++) {
 198                 if (g_str_equal(wispr_element_map[i].str,
 199                                         msg->current_element) == FALSE)
 200                         continue;
 201
 202                 switch (wispr_element_map[i].element) {
 203                 case WISPR_ELEMENT_NONE:
 204                 case WISPR_ELEMENT_ACCESS_PROCEDURE:
 205                         g_free(msg->access_procedure);
 206                         msg->access_procedure = g_strdup(text);
 207                         break;
 208                 case WISPR_ELEMENT_ACCESS_LOCATION:
 209                         g_free(msg->access_location);
 210                         msg->access_location = g_strdup(text);
 211                         break;
 212                 case WISPR_ELEMENT_LOCATION_NAME:
 213                         g_free(msg->location_name);
 214                         msg->location_name = g_strdup(text);
 215                         break;
 216                 case WISPR_ELEMENT_LOGIN_URL:
 217                         g_free(msg->login_url);
 218                         msg->login_url = g_strdup(text);
 219                         break;
 220                 case WISPR_ELEMENT_ABORT_LOGIN_URL:
 221                         g_free(msg->abort_login_url);
 222                         msg->abort_login_url = g_strdup(text);
 223                         break;
 224                 case WISPR_ELEMENT_MESSAGE_TYPE:
 225                         msg->message_type = atoi(text);
 226                         break;
 227                 case WISPR_ELEMENT_RESPONSE_CODE:
 228                         msg->response_code = atoi(text);
 229                         break;
 230                 case WISPR_ELEMENT_NEXT_URL:
 231                 case WISPR_ELEMENT_DELAY:
 232                 case WISPR_ELEMENT_REPLY_MESSAGE:
 233                 case WISPR_ELEMENT_LOGIN_RESULTS_URL:
 234                         break;
 235                 case WISPR_ELEMENT_LOGOFF_URL:
 236                         g_free(msg->logoff_url);
 237                         msg->logoff_url = g_strdup(text);
 238                         break;
 239                 }
 240         }
 241 }
 242
 243 static void xml_wispr_error_handler(GMarkupParseContext *context,
 244                                         GError *error, gpointer user_data)
 245 {
 246         struct connman_wispr_message *msg = user_data;
 247
 248         msg->has_error = TRUE;
 249 }
 250
 251 static const GMarkupParser xml_wispr_parser_handlers = {
 252         xml_wispr_start_element_handler,
 253         xml_wispr_end_element_handler,
 254         xml_wispr_text_handler,
 255         NULL,
 256         xml_wispr_error_handler,
 257 };
 258
 259 static void xml_wispr_parser_callback(const char *str, gpointer user_data)
 260 {
 261         struct connman_wispr_portal_context *wp_context = user_data;
 262         GMarkupParseContext *parser_context = NULL;
 263         gboolean result;
 264
 265         DBG("");
 266
 267         parser_context = g_markup_parse_context_new(&xml_wispr_parser_handlers,
 268                                         G_MARKUP_TREAT_CDATA_AS_TEXT,
 269                                         &(wp_context->wispr_msg), NULL);
 270
 271         result = g_markup_parse_context_parse(parser_context,
 272                                         str, strlen(str), NULL);
 273         if (result == TRUE)
 274                 result = g_markup_parse_context_end_parse(parser_context, NULL);
 275
 276         g_markup_parse_context_free(parser_context);
 277 }
 278
 279 static void web_debug(const char *str, void *data)
 280 {
 281         connman_info("%s: %s\n", (const char *) data, str);
 282 }
 283
 284 static void wispr_portal_error(struct connman_wispr_portal_context *wp_context)
 285 {
 286         DBG("Failed to proceed wispr/portal web request");
 287 }
 288
 289 static void portal_manage_status(GWebResult *result,
 290                         struct connman_wispr_portal_context *wp_context)
 291 {
 292         const char *str = NULL;
 293
 294         DBG("");
 295
 296         /* We currently don't do anything with this info */
 297         if (g_web_result_get_header(result, "X-ConnMan-Client-IP",
 298                                 &str) == TRUE)
 299                 connman_info("Client-IP: %s", str);
 300
 301         if (g_web_result_get_header(result, "X-ConnMan-Client-Country",
 302                                 &str) == TRUE)
 303                 connman_info("Client-Country: %s", str);
 304
 305         if (g_web_result_get_header(result, "X-ConnMan-Client-Region",
 306                                 &str) == TRUE)
 307                 connman_info("Client-Region: %s", str);
 308
 309         __connman_service_ipconfig_indicate_state(wp_context->service,
 310                                                 CONNMAN_SERVICE_STATE_ONLINE,
 311                                                 wp_context->type);
 312 }
 313
 314 static gboolean wispr_portal_web_result(GWebResult *result, gpointer user_data)
 315 {
 316         struct connman_wispr_portal_context *wp_context = user_data;
 317         const char *redirect = NULL;
 318         const guint8 *chunk = NULL;
 319         const char *str = NULL;
 320         guint16 status;
 321         gsize length;
 322
 323         DBG("");
 324
 325         if (wp_context->request_id == 0)
 326                 return FALSE;
 327
 328         g_web_result_get_chunk(result, &chunk, &length);
 329
 330         if (length > 0) {
 331                 g_web_parser_feed_data(wp_context->wispr_parser,
 332                                                         chunk, length);
 333                 return TRUE;
 334         }
 335
 336         g_web_parser_end_data(wp_context->wispr_parser);
 337
 338         status = g_web_result_get_status(result);
 339
 340         DBG("status: %03u", status);
 341
 342         switch (status) {
 343         case 200:
 344                 if (wp_context->wispr_msg.message_type >= 0)
 345                         break;
 346
 347                 if (g_web_result_get_header(result, "X-ConnMan-Status",
 348                                                                 &str) == TRUE)
 349                         portal_manage_status(result, wp_context);
 350
 351                 break;
 352         case 302:
 353                 if (g_web_result_get_header(result, "Location",
 354                                                 &redirect) == FALSE)
 355                         break;
 356
 357                 DBG("Redirect URL: %s", redirect);
 358
 359                 wp_context->request_id = g_web_request_get(wp_context->web,
 360                                 redirect, wispr_portal_web_result, wp_context);
 361
 362                 goto done;
 363         case 404:
 364                 wispr_portal_error(wp_context);
 365
 366                 break;
 367         default:
 368                 break;
 369         }
 370
 371         wp_context->request_id = 0;
 372 done:
 373         wp_context->wispr_msg.message_type = -1;
 374         return FALSE;
 375 }
 376
 377 static void wispr_portal_request_portal(struct connman_wispr_portal_context *wp_context)
 378 {
 379         DBG("");
 380
 381         wp_context->request_id = g_web_request_get(wp_context->web,
 382                         STATUS_URL, wispr_portal_web_result, wp_context);
 383
 384         if (wp_context->request_id == 0)
 385                 wispr_portal_error(wp_context);
 386 }
 387
 388 static void proxy_callback(const char *proxy, void *user_data)
 389 {
 390         struct connman_wispr_portal_context *wp_context = user_data;
 391
 392         DBG("proxy %s", proxy);
 393
 394         wp_context->token = 0;
 395
 396         if (proxy == NULL)
 397                 proxy = getenv("http_proxy");
 398
 399         if (getenv("CONNMAN_WEB_DEBUG"))
 400                 g_web_set_debug(wp_context->web, web_debug, "WEB");
 401
 402         if (proxy != NULL && g_strcmp0(proxy, "DIRECT") != 0)
 403                 g_web_set_proxy(wp_context->web, proxy);
 404
 405         g_web_set_accept(wp_context->web, NULL);
 406         g_web_set_user_agent(wp_context->web, "ConnMan/%s", VERSION);
 407         g_web_set_close_connection(wp_context->web, TRUE);
 408
 409         connman_wispr_message_init(&wp_context->wispr_msg);
 410
 411         wp_context->wispr_parser = g_web_parser_new(
 412                                         "<WISPAccessGatewayParam",
 413                                         "WISPAccessGatewayParam>",
 414                                         xml_wispr_parser_callback, wp_context);
 415
 416         wispr_portal_request_portal(wp_context);
 417 }
 418
 419 static int wispr_portal_detect(struct connman_wispr_portal_context *wp_context)
 420 {
 421         enum connman_service_type service_type;
 422         char *interface = NULL;
 423         int err = 0;
 424
 425         DBG("wispr/portal context %p", wp_context);
 426         DBG("service %p", wp_context->service);
 427
 428         service_type = connman_service_get_type(wp_context->service);
 429
 430         switch (service_type) {
 431         case CONNMAN_SERVICE_TYPE_ETHERNET:
 432         case CONNMAN_SERVICE_TYPE_WIFI:
 433         case CONNMAN_SERVICE_TYPE_WIMAX:
 434         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 435         case CONNMAN_SERVICE_TYPE_CELLULAR:
 436                 break;
 437         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 438         case CONNMAN_SERVICE_TYPE_SYSTEM:
 439         case CONNMAN_SERVICE_TYPE_GPS:
 440         case CONNMAN_SERVICE_TYPE_VPN:
 441         case CONNMAN_SERVICE_TYPE_GADGET:
 442                 return -EOPNOTSUPP;
 443         }
 444
 445         interface = connman_service_get_interface(wp_context->service);
 446         if (interface == NULL)
 447                 return -EINVAL;
 448
 449         DBG("interface %s", interface);
 450
 451         wp_context->web = g_web_new(0);
 452         if (wp_context->web == NULL) {
 453                 err = -ENOMEM;
 454                 goto done;
 455         }
 456
 457         if (wp_context->type == CONNMAN_IPCONFIG_TYPE_IPV4)
 458                 g_web_set_address_family(wp_context->web, AF_INET);
 459         else
 460                 g_web_set_address_family(wp_context->web, AF_INET6);
 461
 462         wp_context->token = connman_proxy_lookup(interface,
 463                                         STATUS_URL, wp_context->service,
 464                                         proxy_callback, wp_context);
 465         if (wp_context->token == 0)
 466                 err = -EINVAL;
 467
 468 done:
 469         g_free(interface);
 470         return err;
 471 }
 472
 473 int __connman_wispr_start(struct connman_service *service,
 474                                         enum connman_ipconfig_type type)
 475 {
 476         struct connman_wispr_portal_context *wp_context = NULL;
 477         struct connman_wispr_portal *wispr_portal = NULL;
 478         int index;
 479
 480         DBG("service %p", service);
 481
 482         if (wispr_portal_list == NULL)
 483                 return -EINVAL;
 484
 485         index = __connman_service_get_index(service);
 486         if (index < 0)
 487                 return -EINVAL;
 488
 489         wispr_portal = g_hash_table_lookup(wispr_portal_list,
 490                                         GINT_TO_POINTER(index));
 491         if (wispr_portal == NULL) {
 492                 wispr_portal = g_try_new0(struct connman_wispr_portal, 1);
 493                 if (wispr_portal == NULL)
 494                         return -ENOMEM;
 495
 496                 g_hash_table_replace(wispr_portal_list,
 497                                         GINT_TO_POINTER(index), wispr_portal);
 498         }
 499
 500         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
 501                 wp_context = wispr_portal->ipv4_context;
 502         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
 503                 wp_context = wispr_portal->ipv6_context;
 504         else
 505                 return -EINVAL;
 506
 507         if (wp_context == NULL) {
 508                 wp_context = g_try_new0(struct connman_wispr_portal_context, 1);
 509                 if (wp_context == NULL)
 510                         return -ENOMEM;
 511
 512                 wp_context->service = service;
 513                 wp_context->type = type;
 514
 515                 if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
 516                         wispr_portal->ipv4_context = wp_context;
 517                 else
 518                         wispr_portal->ipv6_context = wp_context;
 519
 520                 return wispr_portal_detect(wp_context);
 521         }
 522
 523         return 0;
 524 }
 525
 526 void __connman_wispr_stop(struct connman_service *service)
 527 {
 528         int index;
 529
 530         DBG("service %p", service);
 531
 532         if (wispr_portal_list == NULL)
 533                 return;
 534
 535         index = __connman_service_get_index(service);
 536         if (index < 0)
 537                 return;
 538
 539         g_hash_table_remove(wispr_portal_list, GINT_TO_POINTER(index));
 540 }
 541
 542 int __connman_wispr_init(void)
 543 {
 544         DBG("");
 545
 546         wispr_portal_list = g_hash_table_new_full(g_direct_hash,
 547                                                 g_direct_equal, NULL,
 548                                                 free_connman_wispr_portal);
 549
 550         return 0;
 551 }
 552
 553 void __connman_wispr_cleanup(void)
 554 {
 555         DBG("");
 556
 557         g_hash_table_destroy(wispr_portal_list);
 558         wispr_portal_list = NULL;
 559 }