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         g_signal_connect(pcap, "handle-get-all",
 266                          G_CALLBACK(handle_pcap_get_all),
 267                          stc);
 268
 269         /* Export the object (@manager takes its own reference to @object) */
 270         g_dbus_object_manager_server_export(stc->obj_mgr,
 271                                             G_DBUS_OBJECT_SKELETON(object));
 272         g_object_unref(object);
 273
 274         stc->pcap_obj = (gpointer)pcap;
 275
 276         __STC_LOG_FUNC_EXIT__;
 277         return ret;
 278 }
 279
 280 static gboolean __stc_manager_gdbus_manager_init(stc_s *stc)
 281 {
 282         __STC_LOG_FUNC_ENTER__;
 283         gboolean ret = TRUE;
 284         gchar *s = NULL;
 285
 286         StcObjectSkeleton *object = NULL;
 287         StcManager *manager = NULL;
 288         s = g_strdup_printf(STC_DBUS_SERVICE_MANAGER_PATH);
 289
 290         object = stc_object_skeleton_new(s);
 291         g_free(s);
 292
 293         manager = stc_manager_skeleton_new();
 294         stc_object_skeleton_set_manager(object, manager);
 295         g_object_unref(manager);
 296
 297         g_signal_connect(manager, "handle-stop",
 298                          G_CALLBACK(handle_manager_stop), stc);
 299
 300         g_signal_connect(manager, "handle-commit-iptables",
 301                          G_CALLBACK(handle_manager_commit_iptables), stc);
 302
 303         g_signal_connect(manager, "handle-commit-ip6tables",
 304                          G_CALLBACK(handle_manager_commit_ip6tables), stc);
 305
 306         g_dbus_object_manager_server_export(stc->obj_mgr,
 307                                             G_DBUS_OBJECT_SKELETON(object));
 308         g_object_unref(object);
 309
 310         stc->manager_obj = (gpointer)manager;
 311
 312         __STC_LOG_FUNC_EXIT__;
 313         return ret;
 314 }
 315
 316
 317 static void __stc_manager_gdbus_on_bus_acquired(GDBusConnection *connection,
 318                                                 const gchar *name,
 319                                                 gpointer user_data)
 320 {
 321         __STC_LOG_FUNC_ENTER__;
 322         stc_s* stc = (stc_s*)user_data;
 323
 324         stc->obj_mgr = g_dbus_object_manager_server_new("/net/stc");
 325
 326         STC_LOGD("path : %s", name);
 327
 328         stc->connection = connection;
 329
 330         if (__stc_manager_gdbus_statistics_init(stc) == FALSE) {
 331                 STC_LOGE("Can not signal connect to statistics"); //LCOV_EXCL_LINE
 332                 /* Deinitialize and quit manager */
 333         }
 334
 335         if (__stc_manager_gdbus_restriction_init(stc) == FALSE) {
 336                 STC_LOGE("Cannot signal connect to restriction"); //LCOV_EXCL_LINE
 337                 /* Deinitialize and quit manager */
 338         }
 339
 340         if (__stc_manager_gdbus_firewall_init(stc) == FALSE) {
 341                 STC_LOGE("Cannot signal connect to firewall"); //LCOV_EXCL_LINE
 342                 /* Deinitialize and quit manager */
 343         }
 344
 345         if (__stc_manager_gdbus_pcap_init(stc) == FALSE) {
 346                 STC_LOGE("Cannot signal connect to pcap"); //LCOV_EXCL_LINE
 347                 /* Deinitialize and quit manager */
 348         }
 349
 350         if (__stc_manager_gdbus_manager_init(stc) == FALSE) {
 351                 STC_LOGE("Cannot signal connect to manager"); //LCOV_EXCL_LINE
 352                 /* Deinitialize and quit manager */
 353         }
 354
 355         g_dbus_object_manager_server_set_connection(stc->obj_mgr,
 356                                                     stc->connection);
 357
 358         iptables_init();
 359         stc_plugin_firewall_update();
 360         stc_plugin_monitor_init_connection(stc);
 361
 362         stc_plugin_appstatus_register_state_changed_cb(stc,
 363                         stc_plugin_procfs_app_status_changed, NULL);
 364
 365         __STC_LOG_FUNC_EXIT__;
 366 }
 367
 368 static void __stc_manager_gdbus_on_name_acquired(GDBusConnection *connection,
 369                                                  const gchar *name,
 370                                                  gpointer user_data)
 371 {
 372         STC_LOGD("name : %s", name);
 373 }
 374
 375 //LCOV_EXCL_START
 376 static void __stc_manager_gdbus_on_name_lost(GDBusConnection *connection,
 377                                              const gchar *name,
 378                                              gpointer user_data)
 379 {
 380         STC_LOGD("name : %s", name);
 381 }
 382 //LCOV_EXCL_STOP
 383
 384 void stc_manager_gdbus_init(gpointer stc_data)
 385 {
 386         __STC_LOG_FUNC_ENTER__;
 387         stc_s *stc = (stc_s *)stc_data;
 388
 389         stc->gdbus_owner_id = g_bus_own_name(G_BUS_TYPE_SYSTEM,
 390                                              STC_DBUS_SERVICE,
 391                                              G_BUS_NAME_OWNER_FLAGS_NONE,
 392                                              __stc_manager_gdbus_on_bus_acquired,
 393                                              __stc_manager_gdbus_on_name_acquired,
 394                                              __stc_manager_gdbus_on_name_lost,
 395                                              stc,
 396                                              NULL);
 397
 398         __STC_LOG_FUNC_EXIT__;
 399 }
 400
 401 void stc_manager_gdbus_deinit(gpointer stc_data)
 402 {
 403         __STC_LOG_FUNC_ENTER__;
 404         stc_s *stc = (stc_s *)stc_data;
 405
 406         stc_plugin_appstatus_deregister_state_changed_cb(stc);
 407         stc_plugin_monitor_deinit_connection(stc);
 408
 409         g_bus_unown_name(stc->gdbus_owner_id);
 410
 411         stc->statistics_obj = NULL;
 412         stc->restriction_obj = NULL;
 413         stc->firewall_obj = NULL;
 414         stc->pcap_obj = NULL;
 415         stc->manager_obj = NULL;
 416         __STC_LOG_FUNC_EXIT__;
 417 }
 418
 419 API GVariant *stc_manager_gdbus_call_sync(GDBusConnection *connection,
 420                                       const char *dest, const char *path,
 421                                       const char *interface_name,
 422                                       const char *method, GVariant *params)
 423 {
 424         GError *error = NULL;
 425         GVariant *reply = NULL;
 426
 427         if (connection == NULL) {
 428                 STC_LOGE("Failed to get GDBusconnection"); //LCOV_EXCL_LINE
 429                 return reply; //LCOV_EXCL_LINE
 430         }
 431
 432         reply = g_dbus_connection_call_sync(connection,
 433                                             dest,
 434                                             path,
 435                                             interface_name,
 436                                             method,
 437                                             params,
 438                                             NULL,
 439                                             G_DBUS_CALL_FLAGS_NONE,
 440                                             (5 * 1000),  /* 5 seconds timeout */
 441                                             NULL,
 442                                             &error);
 443
 444         if (reply == NULL) {
 445                 if (error != NULL) {
 446                         STC_LOGE("g_dbus_connection_call_sync() failed" //LCOV_EXCL_LINE
 447                                  " error [%d: %s]", error->code, error->message);
 448                         g_error_free(error); //LCOV_EXCL_LINE
 449                 } else {
 450                         STC_LOGE("g_dbus_connection_call_sync() failed"); //LCOV_EXCL_LINE
 451                 }
 452
 453                 return NULL;
 454         }
 455
 456         return reply;
 457 }
 458
 459 API guint stc_manager_gdbus_subscribe_signal(GDBusConnection *connection,
 460                                          const gchar *sender,
 461                                          const gchar *interface_name,
 462                                          const gchar *member,
 463                                          const gchar *object_path,
 464                                          const gchar *arg0,
 465                                          GDBusSignalFlags flags,
 466                                          GDBusSignalCallback callback,
 467                                          gpointer user_data,
 468                                          GDestroyNotify user_data_free_func)
 469 {
 470         if (connection == NULL) {
 471                 STC_LOGE("Failed to get GDBusconnection"); //LCOV_EXCL_LINE
 472                 return 0; //LCOV_EXCL_LINE
 473         }
 474
 475         return g_dbus_connection_signal_subscribe(connection,
 476                                                   sender,
 477                                                   interface_name,
 478                                                   member,
 479                                                   object_path,
 480                                                   NULL,
 481                                                   G_DBUS_SIGNAL_FLAGS_NONE,
 482                                                   callback,
 483                                                   user_data,
 484                                                   user_data_free_func);
 485 }
 486
 487 API void stc_manager_gdbus_unsubscribe_signal(GDBusConnection *connection,
 488                                           guint subscription_id)
 489 {
 490         if (connection == NULL) {
 491                 STC_LOGE("Failed to get GDBusconnection"); //LCOV_EXCL_LINE
 492                 return; //LCOV_EXCL_LINE
 493         }
 494
 495         g_dbus_connection_signal_unsubscribe(connection, subscription_id);
 496 }
 497
 498 API void stc_manager_gdbus_dict_foreach(GVariantIter *iter, dbus_dict_cb cb,
 499                                     void *user_data)
 500 {
 501         __STC_LOG_FUNC_ENTER__;
 502
 503         gchar *key = NULL;
 504         GVariant *value = NULL;
 505
 506         if (!cb) {
 507                 __STC_LOG_FUNC_EXIT__; //LCOV_EXCL_LINE
 508                 return; //LCOV_EXCL_LINE
 509         }
 510
 511         while (g_variant_iter_loop(iter, "{sv}", &key, &value)) {
 512                 /* DEBUG_GDBUS_KEY_VALUE(key, value); */
 513                 if (key)
 514                         cb(key, value, user_data);
 515         }
 516
 517         __STC_LOG_FUNC_EXIT__;
 518 }
 519
 520 API gboolean stc_manager_dbus_emit_signal(GDBusConnection *connection,
 521                                       const gchar *object_path,
 522                                       const gchar *interface_name,
 523                                       const gchar *signal_name,
 524                                       GVariant *parameters)
 525 {
 526         gboolean rv = FALSE;
 527         GError *error = NULL;
 528
 529         if (connection == NULL) {
 530                 STC_LOGE("GDBusconnection is NULL"); //LCOV_EXCL_LINE
 531                 return 0;
 532         }
 533
 534         DEBUG_GDBUS_VARIANT("Signal params: ", parameters);
 535
 536         rv = g_dbus_connection_emit_signal(connection,
 537                                            NULL,
 538                                            object_path,
 539                                            interface_name,
 540                                            signal_name,
 541                                            parameters,
 542                                            &error);
 543         if (rv != TRUE) {
 544                 STC_LOGE("Failed to emit signal [%s] interface [%s] Error [%s]", //LCOV_EXCL_LINE
 545                          signal_name, interface_name, error->message);
 546                 g_error_free(error); //LCOV_EXCL_LINE
 547         } else {
 548                 STC_LOGD("[%s] signal sent on [%s] interface", signal_name,
 549                          interface_name);
 550         }
 551
 552         return rv;
 553 }
 554
 555 gboolean handle_manager_stop(StcManager *object,
 556                                GDBusMethodInvocation *invocation)
 557 {
 558         __STC_LOG_FUNC_ENTER__;
 559         GVariant *return_parameters = NULL;
 560
 561         STC_LOGI("stc manager stop");
 562
 563         return_parameters = g_variant_new("(i)", STC_ERROR_NONE);
 564
 565         DEBUG_GDBUS_VARIANT("Return parameters: ", return_parameters);
 566         STC_DBUS_REPLY(invocation, return_parameters);
 567
 568         stc_stop_manager();
 569
 570         __STC_LOG_FUNC_EXIT__;
 571         return TRUE;
 572 }
 573
 574 gboolean handle_manager_commit_iptables(StcManager *object,
 575                                         GDBusMethodInvocation *invocation,
 576                                         const gchar *option,
 577                                         void *user_data)
 578 {
 579         __STC_LOG_FUNC_ENTER__;
 580         GVariant *return_parameters = NULL;
 581         int ret = STC_ERROR_NONE;
 582         int err_num = 0;
 583         char *err_str = NULL;
 584         char cmd[STC_CMD_SIZE] = { 0, };
 585
 586         if (option == NULL) {
 587                 STC_MANAGER_DBUS_REPLY_ERROR(invocation,
 588                                                  STC_ERROR_INVALID_PARAMETER);
 589                 __STC_LOG_FUNC_EXIT__;
 590                 return TRUE;
 591         }
 592
 593         STC_LOGD("[%s]", option);
 594         g_snprintf(cmd, STC_CMD_SIZE, "%s %s", STC_IPTABLES, option);
 595
 596         ret = stc_commit_iptables(cmd, &err_num, &err_str);
 597
 598         return_parameters = g_variant_new("(iis)", ret, err_num, err_str);
 599
 600         DEBUG_GDBUS_VARIANT("Return parameters: ", return_parameters);
 601         STC_DBUS_REPLY(invocation, return_parameters);
 602
 603         __STC_LOG_FUNC_EXIT__;
 604         return TRUE;
 605 }
 606
 607 gboolean handle_manager_commit_ip6tables(StcManager *object,
 608                                         GDBusMethodInvocation *invocation,
 609                                         const gchar *option,
 610                                         void *user_data)
 611 {
 612         __STC_LOG_FUNC_ENTER__;
 613         GVariant *return_parameters = NULL;
 614         int ret = STC_ERROR_NONE;
 615         int err_num = 0;
 616         char *err_str = NULL;
 617         char cmd[STC_CMD_SIZE] = { 0, };
 618
 619         if (option == NULL) {
 620                 STC_MANAGER_DBUS_REPLY_ERROR(invocation,
 621                                                  STC_ERROR_INVALID_PARAMETER);
 622                 __STC_LOG_FUNC_EXIT__;
 623                 return TRUE;
 624         }
 625
 626         STC_LOGD("[%s]", option);
 627         g_snprintf(cmd, STC_CMD_SIZE, "%s %s", STC_IP6TABLES, option);
 628
 629         ret = stc_commit_iptables(cmd, &err_num, &err_str);
 630
 631         return_parameters = g_variant_new("(iis)", ret, err_num, err_str);
 632
 633         DEBUG_GDBUS_VARIANT("Return parameters: ", return_parameters);
 634         STC_DBUS_REPLY(invocation, return_parameters);
 635
 636         __STC_LOG_FUNC_EXIT__;
 637         return TRUE;
 638 }