src/stc-manager-gdbus.c

   1 /*
   2  * Copyright (c) 2016 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include "stc-manager-gdbus.h"
  18 #include "stc-manager.h"
  19 #include "stc-statistics.h"
  20 #include "stc-restriction.h"
  21 #include "stc-firewall.h"
  22 #include "stc-pcap.h"
  23 #include "stc-manager-util.h"
  24 #include "stc-manager-plugin-appstatus.h"
  25 #include "stc-manager-plugin-procfs.h"
  26 #include "stc-manager-plugin-monitor.h"
  27 #include "stc-manager-plugin-firewall.h"
  28 #include "helper-iptables.h"
  29
  30 #define MANAGER_DBUS_ERROR_NAME "net.stc.manager.Error.Failed"
  31
  32 #define STC_MANAGER_DBUS_REPLY_ERROR(invocation, err_num) \
  33         g_dbus_method_invocation_return_dbus_error((invocation), \
  34                                                    MANAGER_DBUS_ERROR_NAME, \
  35                                                    stc_err_strs[-(err_num)])
  36
  37 static const gchar *stc_err_strs[] = {
  38         "ERROR_NONE",
  39         "FAIL",
  40         "DB_FAILED",
  41         "OUT_OF_MEMORY",
  42         "INVALID_PARAMETER",
  43         "NO_DATA",
  44         "ALREADY_DATA",
  45         "UNINITIALIZED",
  46         "PERMISSION_DENIED",
  47         "NOTIMPL"
  48 };
  49
  50 static gboolean __stc_manager_gdbus_statistics_init(stc_s *stc)
  51 {
  52         __STC_LOG_FUNC_ENTER__;
  53         gboolean ret = TRUE;
  54         gchar *s = NULL;
  55
  56         StcObjectSkeleton *object = NULL;
  57         StcStatistics *statistics = NULL;
  58         s = g_strdup_printf(STC_DBUS_SERVICE_STATISTICS_PATH);
  59
  60         /* Add interface to default object path */
  61         object = stc_object_skeleton_new(s);
  62         g_free(s);
  63
  64         /* Make the newly created object export the interface
  65          * net.stc.statistics (note
  66          * that @object takes its own reference to @statistics).
  67          */
  68
  69         statistics = stc_statistics_skeleton_new();
  70         stc_object_skeleton_set_statistics(object, statistics);
  71         g_object_unref(statistics);
  72
  73         /* Register for method callbacks as signal callbacks */
  74
  75         g_signal_connect(statistics, "handle-init",
  76                          G_CALLBACK(handle_statistics_init),
  77                          stc);
  78
  79         g_signal_connect(statistics, "handle-get",
  80                          G_CALLBACK(handle_statistics_get),
  81                          stc);
  82
  83         g_signal_connect(statistics, "handle-get-all",
  84                          G_CALLBACK(handle_statistics_get_all),
  85                          stc);
  86
  87         g_signal_connect(statistics, "handle-reset",
  88                          G_CALLBACK(handle_statistics_reset),
  89                          stc);
  90
  91         /* Export the object (@manager takes its own reference to @object) */
  92         g_dbus_object_manager_server_export(stc->obj_mgr,
  93                                             G_DBUS_OBJECT_SKELETON(object));
  94         g_object_unref(object);
  95
  96         stc->statistics_obj = (gpointer)statistics;
  97
  98         __STC_LOG_FUNC_EXIT__;
  99         return ret;
 100 }
 101
 102 static gboolean __stc_manager_gdbus_restriction_init(stc_s *stc)
 103 {
 104         __STC_LOG_FUNC_ENTER__;
 105         gboolean ret = TRUE;
 106         gchar *s = NULL;
 107
 108         StcObjectSkeleton *object = NULL;
 109         StcRestriction *restriction = NULL;
 110         s = g_strdup_printf(STC_DBUS_SERVICE_RESTRICTION_PATH);
 111
 112         /* Add interface to default object path */
 113         object = stc_object_skeleton_new(s);
 114         g_free(s);
 115
 116         /* Make the newly created object export the interface
 117          * net.stc.restriction (note
 118          * that @object takes its own reference to @restriction).
 119          */
 120
 121         restriction = stc_restriction_skeleton_new();
 122         stc_object_skeleton_set_restriction(object, restriction);
 123         g_object_unref(restriction);
 124
 125         /* Register for method callbacks as signal callbacks */
 126
 127         g_signal_connect(restriction, "handle-set",
 128                          G_CALLBACK(handle_restriction_set), stc);
 129
 130         g_signal_connect(restriction, "handle-get",
 131                          G_CALLBACK(handle_restriction_get), stc);
 132
 133         g_signal_connect(restriction, "handle-get-all",
 134                          G_CALLBACK(handle_restriction_get_all), stc);
 135
 136         g_signal_connect(restriction, "handle-get-type",
 137                          G_CALLBACK(handle_restriction_get_type),
 138                          stc);
 139
 140         g_signal_connect(restriction, "handle-unset",
 141                          G_CALLBACK(handle_restriction_unset), stc);
 142
 143         /* Export the object (@manager takes its own reference to @object) */
 144         g_dbus_object_manager_server_export(stc->obj_mgr,
 145                                             G_DBUS_OBJECT_SKELETON(object));
 146         g_object_unref(object);
 147
 148         stc->restriction_obj = (gpointer)restriction;
 149
 150         __STC_LOG_FUNC_EXIT__;
 151         return ret;
 152 }
 153
 154 static gboolean __stc_manager_gdbus_firewall_init(stc_s *stc)
 155 {
 156         __STC_LOG_FUNC_ENTER__;
 157         gboolean ret = TRUE;
 158         gchar *s = NULL;
 159
 160         StcObjectSkeleton *object = NULL;
 161         StcFirewall *firewall = NULL;
 162         s = g_strdup_printf(STC_DBUS_SERVICE_FIREWALL_PATH);
 163
 164         /* Add interface to default object path */
 165         object = stc_object_skeleton_new(s);
 166         g_free(s);
 167
 168         firewall = stc_firewall_skeleton_new();
 169         stc_object_skeleton_set_firewall(object, firewall);
 170         g_object_unref(firewall);
 171
 172         /* Register for method callbacks as signal callbacks */
 173
 174         g_signal_connect(firewall, "handle-lock",
 175                          G_CALLBACK(handle_firewall_lock),
 176                          stc);
 177
 178         g_signal_connect(firewall, "handle-unlock",
 179                          G_CALLBACK(handle_firewall_unlock),
 180                          stc);
 181
 182         g_signal_connect(firewall, "handle-get-lock",
 183                          G_CALLBACK(handle_firewall_get_lock),
 184                          stc);
 185
 186         g_signal_connect(firewall, "handle-add-chain",
 187                          G_CALLBACK(handle_firewall_add_chain),
 188                          stc);
 189
 190         g_signal_connect(firewall, "handle-remove-chain",
 191                          G_CALLBACK(handle_firewall_remove_chain),
 192                          stc);
 193
 194         g_signal_connect(firewall, "handle-flush-chain",
 195                          G_CALLBACK(handle_firewall_flush_chain),
 196                          stc);
 197
 198         g_signal_connect(firewall, "handle-get-all-chain",
 199                          G_CALLBACK(handle_firewall_get_all_chain),
 200                          stc);
 201
 202         g_signal_connect(firewall, "handle-set-chain",
 203                          G_CALLBACK(handle_firewall_set_chain),
 204                          stc);
 205
 206         g_signal_connect(firewall, "handle-unset-chain",
 207                          G_CALLBACK(handle_firewall_unset_chain),
 208                          stc);
 209
 210         g_signal_connect(firewall, "handle-add-rule",
 211                          G_CALLBACK(handle_firewall_add_rule),
 212                          stc);
 213
 214         g_signal_connect(firewall, "handle-remove-rule",
 215                          G_CALLBACK(handle_firewall_remove_rule),
 216                          stc);
 217
 218         g_signal_connect(firewall, "handle-update-rule",
 219                          G_CALLBACK(handle_firewall_update_rule),
 220                          stc);
 221
 222         g_signal_connect(firewall, "handle-get-all-rule",
 223                          G_CALLBACK(handle_firewall_get_all_rule),
 224                          stc);
 225
 226         /* Export the object (@manager takes its own reference to @object) */
 227         g_dbus_object_manager_server_export(stc->obj_mgr,
 228                                             G_DBUS_OBJECT_SKELETON(object));
 229         g_object_unref(object);
 230
 231         stc->firewall_obj = (gpointer)firewall;
 232
 233         __STC_LOG_FUNC_EXIT__;
 234         return ret;
 235 }
 236
 237 static gboolean __stc_manager_gdbus_pcap_init(stc_s *stc)
 238 {
 239         __STC_LOG_FUNC_ENTER__;
 240         gboolean ret = TRUE;
 241         gchar *s = NULL;
 242
 243         StcObjectSkeleton *object = NULL;
 244         StcPcap *pcap = NULL;
 245         s = g_strdup_printf(STC_DBUS_SERVICE_PCAP_PATH);
 246
 247         /* Add interface to default object path */
 248         object = stc_object_skeleton_new(s);
 249         g_free(s);
 250
 251         pcap = stc_pcap_skeleton_new();
 252         stc_object_skeleton_set_pcap(object, pcap);
 253         g_object_unref(pcap);
 254
 255         /* Register for method callbacks as signal callbacks */
 256
 257         g_signal_connect(pcap, "handle-start",
 258                          G_CALLBACK(handle_pcap_start),
 259                          stc);
 260
 261         g_signal_connect(pcap, "handle-stop",
 262                          G_CALLBACK(handle_pcap_stop),
 263                          stc);
 264
 265         /* Export the object (@manager takes its own reference to @object) */
 266         g_dbus_object_manager_server_export(stc->obj_mgr,
 267                                             G_DBUS_OBJECT_SKELETON(object));
 268         g_object_unref(object);
 269
 270         stc->pcap_obj = (gpointer)pcap;
 271
 272         __STC_LOG_FUNC_EXIT__;
 273         return ret;
 274 }
 275
 276 static gboolean __stc_manager_gdbus_manager_init(stc_s *stc)
 277 {
 278         __STC_LOG_FUNC_ENTER__;
 279         gboolean ret = TRUE;
 280         gchar *s = NULL;
 281
 282         StcObjectSkeleton *object = NULL;
 283         StcManager *manager = NULL;
 284         s = g_strdup_printf(STC_DBUS_SERVICE_MANAGER_PATH);
 285
 286         object = stc_object_skeleton_new(s);
 287         g_free(s);
 288
 289         manager = stc_manager_skeleton_new();
 290         stc_object_skeleton_set_manager(object, manager);
 291         g_object_unref(manager);
 292
 293         g_signal_connect(manager, "handle-stop",
 294                          G_CALLBACK(handle_manager_stop), stc);
 295
 296         g_signal_connect(manager, "handle-commit-iptables",
 297                          G_CALLBACK(handle_manager_commit_iptables), stc);
 298
 299         g_signal_connect(manager, "handle-commit-ip6tables",
 300                          G_CALLBACK(handle_manager_commit_ip6tables), stc);
 301
 302         g_dbus_object_manager_server_export(stc->obj_mgr,
 303                                             G_DBUS_OBJECT_SKELETON(object));
 304         g_object_unref(object);
 305
 306         stc->manager_obj = (gpointer)manager;
 307
 308         __STC_LOG_FUNC_EXIT__;
 309         return ret;
 310 }
 311
 312
 313 static void __stc_manager_gdbus_on_bus_acquired(GDBusConnection *connection,
 314                                                 const gchar *name,
 315                                                 gpointer user_data)
 316 {
 317         __STC_LOG_FUNC_ENTER__;
 318         stc_s* stc = (stc_s*)user_data;
 319
 320         stc->obj_mgr = g_dbus_object_manager_server_new("/net/stc");
 321
 322         STC_LOGD("path : %s", name);
 323
 324         stc->connection = connection;
 325
 326         if (__stc_manager_gdbus_statistics_init(stc) == FALSE) {
 327                 STC_LOGE("Can not signal connect to statistics"); //LCOV_EXCL_LINE
 328                 /* Deinitialize and quit manager */
 329         }
 330
 331         if (__stc_manager_gdbus_restriction_init(stc) == FALSE) {
 332                 STC_LOGE("Cannot signal connect to restriction"); //LCOV_EXCL_LINE
 333                 /* Deinitialize and quit manager */
 334         }
 335
 336         if (__stc_manager_gdbus_firewall_init(stc) == FALSE) {
 337                 STC_LOGE("Cannot signal connect to firewall"); //LCOV_EXCL_LINE
 338                 /* Deinitialize and quit manager */
 339         }
 340
 341         if (__stc_manager_gdbus_pcap_init(stc) == FALSE) {
 342                 STC_LOGE("Cannot signal connect to pcap"); //LCOV_EXCL_LINE
 343                 /* Deinitialize and quit manager */
 344         }
 345
 346         if (__stc_manager_gdbus_manager_init(stc) == FALSE) {
 347                 STC_LOGE("Cannot signal connect to manager"); //LCOV_EXCL_LINE
 348                 /* Deinitialize and quit manager */
 349         }
 350
 351         g_dbus_object_manager_server_set_connection(stc->obj_mgr,
 352                                                     stc->connection);
 353
 354         iptables_init();
 355         stc_plugin_firewall_update();
 356         stc_plugin_monitor_init_connection(stc);
 357
 358         stc_plugin_appstatus_register_state_changed_cb(stc,
 359                         stc_plugin_procfs_app_status_changed, NULL);
 360
 361         __STC_LOG_FUNC_EXIT__;
 362 }
 363
 364 static void __stc_manager_gdbus_on_name_acquired(GDBusConnection *connection,
 365                                                  const gchar *name,
 366                                                  gpointer user_data)
 367 {
 368         STC_LOGD("name : %s", name);
 369 }
 370
 371 //LCOV_EXCL_START
 372 static void __stc_manager_gdbus_on_name_lost(GDBusConnection *connection,
 373                                              const gchar *name,
 374                                              gpointer user_data)
 375 {
 376         STC_LOGD("name : %s", name);
 377 }
 378 //LCOV_EXCL_STOP
 379
 380 void stc_manager_gdbus_init(gpointer stc_data)
 381 {
 382         __STC_LOG_FUNC_ENTER__;
 383         stc_s *stc = (stc_s *)stc_data;
 384
 385         stc->gdbus_owner_id = g_bus_own_name(G_BUS_TYPE_SYSTEM,
 386                                              STC_DBUS_SERVICE,
 387                                              G_BUS_NAME_OWNER_FLAGS_NONE,
 388                                              __stc_manager_gdbus_on_bus_acquired,
 389                                              __stc_manager_gdbus_on_name_acquired,
 390                                              __stc_manager_gdbus_on_name_lost,
 391                                              stc,
 392                                              NULL);
 393
 394         __STC_LOG_FUNC_EXIT__;
 395 }
 396
 397 void stc_manager_gdbus_deinit(gpointer stc_data)
 398 {
 399         __STC_LOG_FUNC_ENTER__;
 400         stc_s *stc = (stc_s *)stc_data;
 401
 402         stc_plugin_appstatus_deregister_state_changed_cb(stc);
 403         stc_plugin_monitor_deinit_connection(stc);
 404
 405         g_bus_unown_name(stc->gdbus_owner_id);
 406
 407         stc->statistics_obj = NULL;
 408         stc->restriction_obj = NULL;
 409         stc->firewall_obj = NULL;
 410         stc->pcap_obj = NULL;
 411         stc->manager_obj = NULL;
 412         __STC_LOG_FUNC_EXIT__;
 413 }
 414
 415 API GVariant *stc_manager_gdbus_call_sync(GDBusConnection *connection,
 416                                       const char *dest, const char *path,
 417                                       const char *interface_name,
 418                                       const char *method, GVariant *params)
 419 {
 420         GError *error = NULL;
 421         GVariant *reply = NULL;
 422
 423         if (connection == NULL) {
 424                 STC_LOGE("Failed to get GDBusconnection"); //LCOV_EXCL_LINE
 425                 return reply; //LCOV_EXCL_LINE
 426         }
 427
 428         reply = g_dbus_connection_call_sync(connection,
 429                                             dest,
 430                                             path,
 431                                             interface_name,
 432                                             method,
 433                                             params,
 434                                             NULL,
 435                                             G_DBUS_CALL_FLAGS_NONE,
 436                                             (5 * 1000),  /* 5 seconds timeout */
 437                                             NULL,
 438                                             &error);
 439
 440         if (reply == NULL) {
 441                 if (error != NULL) {
 442                         STC_LOGE("g_dbus_connection_call_sync() failed" //LCOV_EXCL_LINE
 443                                  " error [%d: %s]", error->code, error->message);
 444                         g_error_free(error); //LCOV_EXCL_LINE
 445                 } else {
 446                         STC_LOGE("g_dbus_connection_call_sync() failed"); //LCOV_EXCL_LINE
 447                 }
 448
 449                 return NULL;
 450         }
 451
 452         return reply;
 453 }
 454
 455 API guint stc_manager_gdbus_subscribe_signal(GDBusConnection *connection,
 456                                          const gchar *sender,
 457                                          const gchar *interface_name,
 458                                          const gchar *member,
 459                                          const gchar *object_path,
 460                                          const gchar *arg0,
 461                                          GDBusSignalFlags flags,
 462                                          GDBusSignalCallback callback,
 463                                          gpointer user_data,
 464                                          GDestroyNotify user_data_free_func)
 465 {
 466         if (connection == NULL) {
 467                 STC_LOGE("Failed to get GDBusconnection"); //LCOV_EXCL_LINE
 468                 return 0; //LCOV_EXCL_LINE
 469         }
 470
 471         return g_dbus_connection_signal_subscribe(connection,
 472                                                   sender,
 473                                                   interface_name,
 474                                                   member,
 475                                                   object_path,
 476                                                   NULL,
 477                                                   G_DBUS_SIGNAL_FLAGS_NONE,
 478                                                   callback,
 479                                                   user_data,
 480                                                   user_data_free_func);
 481 }
 482
 483 API void stc_manager_gdbus_unsubscribe_signal(GDBusConnection *connection,
 484                                           guint subscription_id)
 485 {
 486         if (connection == NULL) {
 487                 STC_LOGE("Failed to get GDBusconnection"); //LCOV_EXCL_LINE
 488                 return; //LCOV_EXCL_LINE
 489         }
 490
 491         g_dbus_connection_signal_unsubscribe(connection, subscription_id);
 492 }
 493
 494 API void stc_manager_gdbus_dict_foreach(GVariantIter *iter, dbus_dict_cb cb,
 495                                     void *user_data)
 496 {
 497         __STC_LOG_FUNC_ENTER__;
 498
 499         gchar *key = NULL;
 500         GVariant *value = NULL;
 501
 502         if (!cb) {
 503                 __STC_LOG_FUNC_EXIT__; //LCOV_EXCL_LINE
 504                 return; //LCOV_EXCL_LINE
 505         }
 506
 507         while (g_variant_iter_loop(iter, "{sv}", &key, &value)) {
 508                 /* DEBUG_GDBUS_KEY_VALUE(key, value); */
 509                 if (key)
 510                         cb(key, value, user_data);
 511         }
 512
 513         __STC_LOG_FUNC_EXIT__;
 514 }
 515
 516 API gboolean stc_manager_dbus_emit_signal(GDBusConnection *connection,
 517                                       const gchar *object_path,
 518                                       const gchar *interface_name,
 519                                       const gchar *signal_name,
 520                                       GVariant *parameters)
 521 {
 522         gboolean rv = FALSE;
 523         GError *error = NULL;
 524
 525         if (connection == NULL) {
 526                 STC_LOGE("GDBusconnection is NULL"); //LCOV_EXCL_LINE
 527                 return 0;
 528         }
 529
 530         DEBUG_GDBUS_VARIANT("Signal params: ", parameters);
 531
 532         rv = g_dbus_connection_emit_signal(connection,
 533                                            NULL,
 534                                            object_path,
 535                                            interface_name,
 536                                            signal_name,
 537                                            parameters,
 538                                            &error);
 539         if (rv != TRUE) {
 540                 STC_LOGE("Failed to emit signal [%s] interface [%s] Error [%s]", //LCOV_EXCL_LINE
 541                          signal_name, interface_name, error->message);
 542                 g_error_free(error); //LCOV_EXCL_LINE
 543         } else {
 544                 STC_LOGD("[%s] signal sent on [%s] interface", signal_name,
 545                          interface_name);
 546         }
 547
 548         return rv;
 549 }
 550
 551 gboolean handle_manager_stop(StcManager *object,
 552                                GDBusMethodInvocation *invocation)
 553 {
 554         __STC_LOG_FUNC_ENTER__;
 555         GVariant *return_parameters = NULL;
 556
 557         STC_LOGI("stc manager stop");
 558
 559         return_parameters = g_variant_new("(i)", STC_ERROR_NONE);
 560
 561         DEBUG_GDBUS_VARIANT("Return parameters: ", return_parameters);
 562         STC_DBUS_REPLY(invocation, return_parameters);
 563
 564         stc_stop_manager();
 565
 566         __STC_LOG_FUNC_EXIT__;
 567         return TRUE;
 568 }
 569
 570 gboolean handle_manager_commit_iptables(StcManager *object,
 571                                         GDBusMethodInvocation *invocation,
 572                                         const gchar *option,
 573                                         void *user_data)
 574 {
 575         __STC_LOG_FUNC_ENTER__;
 576         GVariant *return_parameters = NULL;
 577         int ret = STC_ERROR_NONE;
 578         int err_num = 0;
 579         char *err_str = NULL;
 580         char cmd[STC_CMD_SIZE] = { 0, };
 581
 582         if (option == NULL) {
 583                 STC_MANAGER_DBUS_REPLY_ERROR(invocation,
 584                                                  STC_ERROR_INVALID_PARAMETER);
 585                 __STC_LOG_FUNC_EXIT__;
 586                 return TRUE;
 587         }
 588
 589         STC_LOGD("[%s]", option);
 590         g_snprintf(cmd, STC_CMD_SIZE, "%s %s", STC_IPTABLES, option);
 591
 592         ret = stc_commit_iptables(cmd, &err_num, &err_str);
 593
 594         return_parameters = g_variant_new("(iis)", ret, err_num, err_str);
 595
 596         DEBUG_GDBUS_VARIANT("Return parameters: ", return_parameters);
 597         STC_DBUS_REPLY(invocation, return_parameters);
 598
 599         __STC_LOG_FUNC_EXIT__;
 600         return TRUE;
 601 }
 602
 603 gboolean handle_manager_commit_ip6tables(StcManager *object,
 604                                         GDBusMethodInvocation *invocation,
 605                                         const gchar *option,
 606                                         void *user_data)
 607 {
 608         __STC_LOG_FUNC_ENTER__;
 609         GVariant *return_parameters = NULL;
 610         int ret = STC_ERROR_NONE;
 611         int err_num = 0;
 612         char *err_str = NULL;
 613         char cmd[STC_CMD_SIZE] = { 0, };
 614
 615         if (option == NULL) {
 616                 STC_MANAGER_DBUS_REPLY_ERROR(invocation,
 617                                                  STC_ERROR_INVALID_PARAMETER);
 618                 __STC_LOG_FUNC_EXIT__;
 619                 return TRUE;
 620         }
 621
 622         STC_LOGD("[%s]", option);
 623         g_snprintf(cmd, STC_CMD_SIZE, "%s %s", STC_IP6TABLES, option);
 624
 625         ret = stc_commit_iptables(cmd, &err_num, &err_str);
 626
 627         return_parameters = g_variant_new("(iis)", ret, err_num, err_str);
 628
 629         DEBUG_GDBUS_VARIANT("Return parameters: ", return_parameters);
 630         STC_DBUS_REPLY(invocation, return_parameters);
 631
 632         __STC_LOG_FUNC_EXIT__;
 633         return TRUE;
 634 }