src/monitor/stc-monitor.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 <linux/netlink.h>
  18
  19 #include "stc-default-connection.h"
  20 #include "helper-nl.h"
  21 #include "helper-nfacct-rule.h"
  22 #include "helper-net-cls.h"
  23 #include "helper-cgroup.h"
  24 #include "counter.h"
  25 #include "table-statistics.h"
  26 #include "table-counters.h"
  27 #include "stc-monitor.h"
  28 #include "stc-manager-plugin.h"
  29
  30 #define MAX_INT_LENGTH 128
  31
  32 typedef struct {
  33         stc_app_key_s *app_key;
  34         stc_process_key_s *proc_key;
  35         gboolean entry_removed;
  36 } remove_pid_context_s;
  37
  38 typedef struct {
  39         struct nfacct_rule *counter;
  40         int64_t bytes;
  41         gboolean in_limit_reached;
  42         gboolean out_limit_reached;
  43 } classid_bytes_context_s;
  44
  45 static stc_system_s *g_system = NULL;
  46
  47 static nfacct_rule_jump __get_jump_by_intend(struct nfacct_rule *counter)
  48 {
  49         if (counter->intend == NFACCT_WARN)
  50                 return NFACCT_JUMP_ACCEPT;
  51         else if (counter->intend == NFACCT_BLOCK)
  52                 return NFACCT_JUMP_REJECT;
  53
  54         return NFACCT_JUMP_UNKNOWN;
  55 }
  56
  57 static stc_error_e __add_iptables_in(struct nfacct_rule *counter)
  58 {
  59         return produce_net_rule(counter, 0, 0,
  60                 NFACCT_ACTION_INSERT, __get_jump_by_intend(counter),
  61                 NFACCT_COUNTER_IN);
  62 }
  63
  64 static stc_error_e __add_iptables_out(struct nfacct_rule *counter)
  65 {
  66         return produce_net_rule(counter, 0, 0,
  67                 NFACCT_ACTION_INSERT, __get_jump_by_intend(counter),
  68                 NFACCT_COUNTER_OUT);
  69 }
  70
  71 static stc_error_e __del_iptables_in(struct nfacct_rule *counter)
  72 {
  73         return produce_net_rule(counter, 0, 0,
  74                 NFACCT_ACTION_DELETE, __get_jump_by_intend(counter),
  75                 NFACCT_COUNTER_IN);
  76 }
  77
  78 static stc_error_e __del_iptables_out(struct nfacct_rule *counter)
  79 {
  80         return produce_net_rule(counter, 0, 0,
  81                 NFACCT_ACTION_DELETE, __get_jump_by_intend(counter),
  82                 NFACCT_COUNTER_OUT);
  83 }
  84
  85 static int __processes_tree_key_compare(gconstpointer a, gconstpointer b,
  86                                         gpointer UNUSED user_data)
  87 {
  88         stc_process_key_s *key_a = (stc_process_key_s *)a;
  89         stc_process_key_s *key_b = (stc_process_key_s *)b;
  90
  91         return key_a->pid - key_b->pid;
  92 }
  93
  94 static void __processes_tree_value_free(gpointer data)
  95 {
  96         stc_process_value_s *value = (stc_process_value_s *)data;
  97
  98         FREE(value);
  99 }
 100
 101 static void __processes_tree_key_free(gpointer data)
 102 {
 103         stc_process_key_s *key = (stc_process_key_s *)data;
 104
 105         FREE(key);
 106 }
 107
 108 static int __apps_tree_key_compare(gconstpointer a, gconstpointer b,
 109                                    gpointer UNUSED user_data)
 110 {
 111         stc_app_key_s *key_a = (stc_app_key_s *)a;
 112         stc_app_key_s *key_b = (stc_app_key_s *)b;
 113         gint ret;
 114
 115         ret = g_strcmp0(key_a->pkg_id, key_b->pkg_id);
 116         if (ret)
 117                 return ret;
 118
 119         return g_strcmp0(key_a->app_id, key_b->app_id);
 120 }
 121
 122 static void __apps_tree_value_free(gpointer data)
 123 {
 124         stc_app_value_s *value = (stc_app_value_s *)data;
 125
 126         g_tree_destroy(value->processes);
 127         value->processes = NULL;
 128
 129         FREE(value);
 130 }
 131
 132 static void __apps_tree_key_free(gpointer data)
 133 {
 134         stc_app_key_s *key = (stc_app_key_s *)data;
 135
 136         g_free(key->pkg_id);
 137         g_free(key->app_id);
 138         FREE(key);
 139 }
 140
 141 static int __rstns_tree_key_compare(gconstpointer a, gconstpointer b,
 142                                     gpointer UNUSED user_data)
 143 {
 144         stc_rstn_key_s *key_a = (stc_rstn_key_s *)a;
 145         stc_rstn_key_s *key_b = (stc_rstn_key_s *)b;
 146         int ret;
 147
 148         ret = g_strcmp0(key_a->app_id, key_b->app_id);
 149         if (ret != 0)
 150                 return ret;
 151
 152         ret = g_strcmp0(key_a->ifname, key_b->ifname);
 153         if (ret != 0)
 154                 return ret;
 155
 156         ret = g_strcmp0(key_a->imsi, key_b->imsi);
 157         if (ret != 0)
 158                 return ret;
 159
 160         ret = key_a->iftype - key_b->iftype;
 161         if (ret != 0)
 162                 return ret;
 163
 164         return 0;
 165 }
 166
 167 static void __rstns_tree_value_free(gpointer data)
 168 {
 169         stc_rstn_value_s *value = (stc_rstn_value_s *)data;
 170
 171         FREE(value);
 172 }
 173
 174 static void __rstns_tree_key_free(gpointer data)
 175 {
 176         stc_rstn_key_s *key = (stc_rstn_key_s *)data;
 177
 178         FREE(key->app_id);
 179         FREE(key->ifname);
 180         FREE(key->imsi);
 181         FREE(key);
 182 }
 183
 184 static gboolean __processes_tree_foreach_print(gpointer key, gpointer value,
 185                                                gpointer data)
 186 {
 187         stc_process_key_s *proc_key = (stc_process_key_s *)key;
 188         stc_process_value_s *proc_value = (stc_process_value_s *)value;
 189
 190         STC_LOGD("Process entry => PID [%d], Ground state [%d]",
 191                  proc_key->pid, proc_value->ground);
 192         return FALSE;
 193 }
 194
 195 static void __processes_tree_printall(GTree *processes)
 196 {
 197         g_tree_foreach(processes, __processes_tree_foreach_print, NULL);
 198 }
 199
 200 static gboolean __apps_tree_foreach_print(gpointer key, gpointer value,
 201                                           gpointer data)
 202 {
 203         stc_app_key_s *app_key = (stc_app_key_s *)key;
 204         stc_app_value_s *app_value = (stc_app_value_s *)value;
 205
 206         STC_LOGD("Application info => Pkg ID [%s], App ID [%s],"
 207                  " Type [%d], classid [%d],"
 208                  " counter [ in (%lld), out (%lld)]",
 209                  app_key->pkg_id, app_key->app_id,
 210                  app_value->type, app_value->classid,
 211                  app_value->data_usage.in_bytes, app_value->data_usage.out_bytes);
 212
 213         __processes_tree_printall(app_value->processes);
 214         return FALSE;
 215 }
 216
 217 #if 0
 218 static void __apps_tree_printall(void)
 219 {
 220         g_tree_foreach(g_system->apps, __apps_tree_foreach_print, NULL);
 221 }
 222 #endif
 223
 224 static gboolean __apps_tree_foreach_remove_pid(gpointer key, gpointer value,
 225                                                gpointer data)
 226 {
 227         remove_pid_context_s *context = (remove_pid_context_s *)data;
 228         stc_app_value_s *app_value = (stc_app_value_s *)value;
 229
 230         if (!g_tree_remove(app_value->processes, context->proc_key)) {
 231                 STC_LOGD("key not found");
 232                 return FALSE;
 233         }
 234
 235         context->entry_removed = TRUE;
 236         context->app_key = (stc_app_key_s *)key;
 237
 238         return TRUE;
 239 }
 240
 241 static stc_app_value_s * __application_lookup(GTree *apps,
 242                                               const stc_app_key_s *key)
 243 {
 244         stc_app_value_s *lookup;
 245
 246         ret_value_msg_if(apps == NULL, NULL, "apps is null!");
 247
 248         lookup = g_tree_lookup(apps, key);
 249
 250         return lookup;
 251 }
 252
 253 static stc_process_value_s * __process_lookup(GTree *processes,
 254                                               const stc_process_key_s *key)
 255 {
 256         stc_process_value_s *lookup;
 257
 258         ret_value_msg_if(processes == NULL, NULL, "processes is null!");
 259
 260         lookup = g_tree_lookup(processes, key);
 261
 262         return lookup;
 263 }
 264
 265 static gboolean __processes_tree_check_empty(gpointer key, gpointer value,
 266                                              gpointer data)
 267 {
 268         guint *pid_count = (guint *)data;
 269         (*pid_count)++;
 270         return TRUE;
 271 }
 272
 273 static gboolean __add_application_monitor(gpointer key, gpointer value,
 274                                           gpointer data)
 275 {
 276         stc_app_value_s *app_value = (stc_app_value_s *)value;
 277         default_connection_s *connection = (default_connection_s *)data;
 278         stc_s *stc = stc_get_manager();
 279
 280         if (stc && connection && connection->ifname) {
 281                 struct nfacct_rule counter;
 282
 283                 if (!stc->carg) {
 284                         stc->carg = MALLOC0(counter_arg_s, 1);
 285                         stc->carg->sock = stc_monitor_get_counter_socket();
 286                 }
 287
 288                 memset(&counter, 0, sizeof(struct nfacct_rule));
 289
 290                 counter.carg = stc->carg;
 291                 counter.classid = app_value->classid;
 292                 counter.intend = NFACCT_COUNTER;
 293                 g_strlcpy(counter.ifname, connection->ifname, MAX_IFACE_LENGTH);
 294
 295                 __add_iptables_in(&counter);
 296                 __add_iptables_out(&counter);
 297         }
 298
 299         return FALSE;
 300 }
 301
 302 static gboolean __remove_application_monitor(gpointer key, gpointer value,
 303                                              gpointer data)
 304 {
 305         stc_app_value_s *app_value = (stc_app_value_s *)value;
 306         default_connection_s *connection = (default_connection_s *)data;
 307         stc_s *stc = stc_get_manager();
 308
 309         if (stc && connection && connection->ifname) {
 310                 struct nfacct_rule counter;
 311
 312                 if (!stc->carg) {
 313                         stc->carg = MALLOC0(counter_arg_s, 1);
 314                         stc->carg->sock = stc_monitor_get_counter_socket();
 315                 }
 316
 317                 memset(&counter, 0, sizeof(struct nfacct_rule));
 318
 319                 counter.carg = stc->carg;
 320                 counter.classid = app_value->classid;
 321                 counter.intend = NFACCT_COUNTER;
 322                 g_strlcpy(counter.ifname, connection->ifname, MAX_IFACE_LENGTH);
 323
 324                 __del_iptables_in(&counter);
 325                 __del_iptables_out(&counter);
 326         }
 327
 328         return FALSE;
 329 }
 330
 331 static void __print_rstn(stc_rstn_key_s *rstn_key, stc_rstn_value_s *rstn_value)
 332 {
 333         STC_LOGI("rstn info => rstn_id [%llu], "
 334                  "app_id [%s], classid [%lu], ifname [%s], "
 335                  "iftype [%d], rst_state [%d], "
 336                  "limit [ in (%lld), out (%lld)], "
 337                  "warn_limit [ in (%lld), out (%lld)], "
 338                  "counter [ in (%lld), out (%lld)], "
 339                  "roaming [%d], imsi [%s]",
 340                  rstn_value->restriction_id,
 341                  rstn_key->app_id, rstn_value->classid , rstn_key->ifname,
 342                  rstn_key->iftype, rstn_value->rst_state,
 343                  rstn_value->limit.in_bytes, rstn_value->limit.out_bytes,
 344                  rstn_value->warn_limit.in_bytes,
 345                  rstn_value->warn_limit.out_bytes,
 346                  rstn_value->counter.in_bytes, rstn_value->counter.out_bytes,
 347                  rstn_key->roaming, rstn_key->imsi);
 348 }
 349
 350 static void __process_restriction(enum traffic_restriction_type rst_type,
 351                                   stc_rstn_key_s *rstn_key,
 352                                   stc_rstn_value_s *rstn_value, void *data)
 353 {
 354         stc_data_counter_s effective_limit, effective_warn_limit;
 355         default_connection_s *old_connection = (default_connection_s *)data;
 356         default_connection_s *connection = NULL;
 357
 358         if (old_connection != NULL)
 359                 connection = old_connection;
 360         else
 361                 connection = stc_get_default_connection();
 362
 363         /* no default ifname */
 364         if (connection->ifname == NULL)
 365                 return;
 366
 367         /* rstn not applicable for this interface */
 368         if (rstn_key->ifname != NULL && g_strcmp0("", rstn_key->ifname) != 0 &&
 369             g_strcmp0(connection->ifname, rstn_key->ifname) != 0)
 370                 return;
 371
 372         /* classid is invalid */
 373         if (rstn_value->classid == STC_UNKNOWN_CLASSID)
 374                 return;
 375
 376         effective_limit.out_bytes = rstn_value->limit.out_bytes;
 377         effective_limit.in_bytes = rstn_value->limit.in_bytes;
 378         effective_warn_limit.out_bytes = rstn_value->warn_limit.out_bytes;
 379         effective_warn_limit.in_bytes = rstn_value->warn_limit.in_bytes;
 380
 381         if (rst_type == RST_SET) {
 382                 /* TODO: Change this to runtime memory */
 383                 table_counters_info info;
 384
 385                 memset(&info, 0, sizeof(table_counters_info));
 386                 table_counters_get(rstn_value->restriction_id, &info);
 387
 388                 effective_limit.out_bytes -= info.sent_bytes;
 389                 effective_limit.in_bytes -= info.rcv_bytes;
 390                 effective_warn_limit.out_bytes -= info.sent_bytes;
 391                 effective_warn_limit.in_bytes -= info.rcv_bytes;
 392
 393                 if (effective_limit.in_bytes < 0) {
 394                         effective_limit.in_bytes = 0;
 395                         rstn_value->in_limit_reached = TRUE;
 396                 }
 397
 398                 if (effective_limit.out_bytes < 0) {
 399                         effective_limit.out_bytes = 0;
 400                         rstn_value->out_limit_reached = TRUE;
 401                 }
 402
 403                 if (effective_warn_limit.in_bytes < 0)
 404                         effective_warn_limit.in_bytes = 0;
 405
 406                 if (effective_warn_limit.out_bytes < 0)
 407                         effective_warn_limit.out_bytes = 0;
 408                  STC_LOGD("datausage [in: %lld, out: %lld]",
 409                           info.rcv_bytes, info.sent_bytes);
 410         }
 411
 412         STC_LOGD("rstn_id [%llu], effective limit [in: %lld, out: %lld], "
 413                  "effective warn limit [in: %lld, out: %lld], "
 414                  "datausage [in: %lld, out: %lld]",
 415                  rstn_value->restriction_id,
 416                  effective_limit.in_bytes, effective_limit.out_bytes,
 417                  effective_warn_limit.in_bytes, effective_warn_limit.out_bytes);
 418
 419         send_net_restriction(rst_type,
 420                              rstn_value->classid,
 421                              0 /*quota_id*/,
 422                              connection->type,
 423                              effective_limit.out_bytes,
 424                              effective_limit.in_bytes,
 425                              effective_warn_limit.out_bytes,
 426                              effective_warn_limit.in_bytes,
 427                              connection->ifname);
 428         switch (rst_type) {
 429         case RST_SET:
 430                 rstn_value->rst_state = STC_RESTRICTION_ACTIVATED;
 431                 rstn_value->in_limit_reached = FALSE;
 432                 rstn_value->out_limit_reached = FALSE;
 433                 break;
 434         case RST_EXCLUDE:
 435                 ;//Do Nothing
 436                 break;
 437         case RST_UNSET:
 438                 rstn_value->rst_state = STC_RESTRICTION_REMOVED;
 439                 rstn_value->in_limit_reached = FALSE;
 440                 rstn_value->out_limit_reached = FALSE;
 441                 break;
 442         default:
 443                 ;//Do Nothing
 444         }
 445 }
 446
 447 static gboolean __remove_rstns_foreach_application(gpointer key,
 448                                                    gpointer value,
 449                                                    gpointer data)
 450 {
 451         stc_rstn_key_s *rstn_key = (stc_rstn_key_s *)key;
 452         stc_rstn_value_s *rstn_value = (stc_rstn_value_s *)value;
 453         gchar *app_id = (gchar *)data;
 454
 455         /* rstn rule is not for applications */
 456         if (rstn_key->app_id == NULL)
 457                 goto out;
 458
 459         /* rstn rule is not for this application */
 460         if (g_strcmp0(rstn_key->app_id, app_id) != 0)
 461                 goto out;
 462
 463         /* rstn rule is already removed */
 464         if (rstn_value->rst_state == STC_RESTRICTION_REMOVED)
 465                 goto out;
 466
 467         /* remove restriction from system */
 468         __process_restriction(RST_UNSET, rstn_key, rstn_value, data);
 469
 470         __print_rstn(rstn_key, rstn_value);
 471 out:
 472         return FALSE;
 473 }
 474
 475 static void __remove_rstns_for_application(gchar *app_id)
 476 {
 477         g_tree_foreach(g_system->rstns, __remove_rstns_foreach_application,
 478                        app_id);
 479 }
 480
 481 static stc_error_e __application_remove_if_empty(const stc_app_key_s *app_key)
 482 {
 483         stc_error_e ret = STC_ERROR_NONE;
 484         guint pid_count = 0;
 485         stc_app_value_s *lookup;
 486
 487         ret_value_msg_if(g_system == NULL, STC_ERROR_FAIL, "stc monitor not initialized!");
 488
 489         lookup = __application_lookup(g_system->apps, app_key);
 490         if (!lookup) {
 491                 STC_LOGE("app_key not found");
 492                 return STC_ERROR_NO_DATA;
 493         }
 494
 495         g_tree_foreach(lookup->processes, __processes_tree_check_empty,
 496                        &pid_count);
 497
 498         if (!pid_count) {
 499                 /* remove nfacct rule for this classid */
 500                 __remove_application_monitor((gpointer) app_key, lookup,
 501                                              stc_get_default_connection());
 502                 __remove_rstns_for_application(app_key->app_id);
 503         }
 504
 505         if (!g_tree_remove(g_system->apps, app_key)) {
 506                 ret = STC_ERROR_NO_DATA;
 507                 STC_LOGE("key not found");
 508         }
 509
 510         return ret;
 511 }
 512
 513 static stc_error_e __close_contr_sock(stc_system_s *system)
 514 {
 515         ret_value_msg_if(system == NULL, STC_ERROR_INVALID_PARAMETER, "invalid parameter");
 516
 517         /* close netlink socket for updating kernel counters */
 518         if (g_system->contr_sock != -1) {
 519                 close(g_system->contr_sock);
 520                 g_system->contr_sock = -1;
 521         }
 522
 523         if (g_system->contr_gsource_id != 0) {
 524                 g_source_remove(g_system->contr_gsource_id);
 525                 g_system->contr_gsource_id = 0;
 526         }
 527
 528         return STC_ERROR_NONE;
 529 }
 530
 531 static gboolean __rstn_counter_update_foreach_classid(gpointer key,
 532                                                       gpointer value,
 533                                                       gpointer data)
 534 {
 535         stc_rstn_key_s *rstn_key = (stc_rstn_key_s *)key;
 536         stc_rstn_value_s *rstn_value = (stc_rstn_value_s *)value;
 537         classid_bytes_context_s *context = (classid_bytes_context_s *)data;
 538
 539         if (context->counter->intend != NFACCT_COUNTER)
 540                 goto try_next_callback;
 541
 542         if (rstn_value->classid != context->counter->classid)
 543                 goto try_next_callback;
 544
 545         if (rstn_value->in_limit_reached == TRUE) {
 546                 context->in_limit_reached = TRUE;
 547                 goto try_next_callback;
 548         }
 549
 550         if (rstn_value->out_limit_reached == TRUE) {
 551                 context->out_limit_reached = TRUE;
 552                 goto try_next_callback;
 553         }
 554
 555         switch (context->counter->iotype) {
 556         case NFACCT_COUNTER_IN:
 557                 rstn_value->counter.in_bytes += context->bytes;
 558
 559                 if (rstn_value->counter.in_bytes >= rstn_value->warn_limit.in_bytes
 560                     && rstn_value->warn_limit_crossed_notified == FALSE) {
 561                         gboolean rv = FALSE;
 562                         char iftype[MAX_INT_LENGTH];
 563                         char byte[MAX_INT_LENGTH];
 564                         stc_s *stc = (stc_s *)stc_get_manager();
 565                         ret_value_msg_if(stc == NULL, FALSE, "failed to get stc data");
 566
 567                         rv = stc_manager_dbus_emit_signal(stc->connection,
 568                                                           STC_DBUS_SERVICE_RESTRICTION_PATH,
 569                                                           STC_DBUS_INTERFACE_RESTRICTION,
 570                                                           "WarnThresholdCrossed",
 571                                                           g_variant_new("(s)", rstn_key->app_id));
 572                         if (rv == TRUE)
 573                                 rstn_value->warn_limit_crossed_notified = TRUE;
 574
 575                         snprintf(iftype, MAX_INT_LENGTH, "%d", rstn_key->iftype);
 576                         snprintf(byte, MAX_INT_LENGTH, "%lld", rstn_value->limit.in_bytes);
 577                         stc_send_warn_message_to_net_popup("warn threshold crossed",
 578                                 "warning_noti", rstn_key->app_id, iftype, byte);
 579                 }
 580
 581                 /* block immediately */
 582                 if (rstn_value->counter.in_bytes >= rstn_value->limit.in_bytes) {
 583                         context->counter->intend = NFACCT_BLOCK;
 584                         __del_iptables_in(context->counter);
 585                         __add_iptables_in(context->counter);
 586                         context->counter->intend = NFACCT_COUNTER;
 587                         rstn_value->in_limit_reached = TRUE;
 588
 589                         if (rstn_value->rstn_limit_crossed_notified == FALSE) {
 590                                 gboolean rv = FALSE;
 591                                 int ret = 0;
 592                                 char iftype[MAX_INT_LENGTH];
 593                                 char byte[MAX_INT_LENGTH];
 594                                 stc_s *stc = (stc_s *)stc_get_manager();
 595                                 ret_value_msg_if(stc == NULL, FALSE, "failed to get stc data");
 596
 597                                 rv = stc_manager_dbus_emit_signal(stc->connection,
 598                                                                   STC_DBUS_SERVICE_RESTRICTION_PATH,
 599                                                                   STC_DBUS_INTERFACE_RESTRICTION,
 600                                                                   "RestrictionThresholdCrossed",
 601                                                                   g_variant_new("(s)", rstn_key->app_id));
 602                                 if (rv == TRUE)
 603                                         rstn_value->rstn_limit_crossed_notified = TRUE;
 604
 605                                 snprintf(iftype, MAX_INT_LENGTH, "%d", rstn_key->iftype);
 606                                 snprintf(byte, MAX_INT_LENGTH, "%lld", rstn_value->limit.in_bytes);
 607                                 stc_send_restriction_message_to_net_popup("restriction threshold crossed",
 608                                         "restriction_noti", rstn_key->app_id, iftype, byte);
 609                         }
 610                 }
 611
 612                 g_system->rstns_tree_updated = TRUE;
 613                 __print_rstn(rstn_key, rstn_value);
 614                 break;
 615         case NFACCT_COUNTER_OUT:
 616                 rstn_value->counter.out_bytes += context->bytes;
 617
 618                 if (rstn_value->counter.out_bytes >= rstn_value->limit.out_bytes
 619                     && rstn_value->warn_limit_crossed_notified == FALSE) {
 620                         gboolean rv = FALSE;
 621                         char iftype[MAX_INT_LENGTH];
 622                         char byte[MAX_INT_LENGTH];
 623                         stc_s *stc = (stc_s *)stc_get_manager();
 624                         ret_value_msg_if(stc == NULL, FALSE, "failed to get stc data");
 625
 626                         rv = stc_manager_dbus_emit_signal(stc->connection,
 627                                                           STC_DBUS_SERVICE_RESTRICTION_PATH,
 628                                                           STC_DBUS_INTERFACE_RESTRICTION,
 629                                                           "WarnThresholdCrossed",
 630                                                           g_variant_new("(s)", rstn_key->app_id));
 631                         if (rv == TRUE)
 632                                 rstn_value->warn_limit_crossed_notified = TRUE;
 633
 634                         snprintf(iftype, MAX_INT_LENGTH, "%d", rstn_key->iftype);
 635                         snprintf(byte, MAX_INT_LENGTH, "%lld", rstn_value->limit.out_bytes);
 636                         stc_send_warn_message_to_net_popup("warn threshold crossed",
 637                                 "warning_noti", rstn_key->app_id, iftype, byte);
 638                 }
 639
 640                 /* block immediately */
 641                 if (rstn_value->counter.out_bytes >= rstn_value->limit.out_bytes) {
 642                         context->counter->intend = NFACCT_BLOCK;
 643                         __del_iptables_out(context->counter);
 644                         __add_iptables_out(context->counter);
 645                         context->counter->intend = NFACCT_COUNTER;
 646                         rstn_value->out_limit_reached = TRUE;
 647
 648                         if (rstn_value->rstn_limit_crossed_notified == FALSE) {
 649                                 gboolean rv = FALSE;
 650                                 char iftype[MAX_INT_LENGTH];
 651                                 char byte[MAX_INT_LENGTH];
 652                                 stc_s *stc = (stc_s *)stc_get_manager();
 653                                 ret_value_msg_if(stc == NULL, FALSE, "failed to get stc data");
 654
 655                                 rv = stc_manager_dbus_emit_signal(stc->connection,
 656                                                                   STC_DBUS_SERVICE_RESTRICTION_PATH,
 657                                                                   STC_DBUS_INTERFACE_RESTRICTION,
 658                                                                   "RestrictionThresholdCrossed",
 659                                                                   g_variant_new("(s)", rstn_key->app_id));
 660                                 if (rv == TRUE)
 661                                         rstn_value->rstn_limit_crossed_notified = TRUE;
 662
 663                                 snprintf(iftype, MAX_INT_LENGTH, "%d", rstn_key->iftype);
 664                                 snprintf(byte, MAX_INT_LENGTH, "%lld", rstn_value->limit.out_bytes);
 665                                 stc_send_restriction_message_to_net_popup("restriction threshold crossed",
 666                                         "restriction_noti", rstn_key->app_id, iftype, byte);
 667                         }
 668                 }
 669
 670                 g_system->rstns_tree_updated = TRUE;
 671                 __print_rstn(rstn_key, rstn_value);
 672                 break;
 673         default:
 674                 STC_LOGE("unknown iotype");
 675         }
 676
 677
 678 try_next_callback:
 679         return FALSE;
 680 }
 681
 682 static gboolean __update_app_statistics(gpointer key, gpointer value,
 683                                         gpointer data)
 684 {
 685         stc_app_key_s *app_key = (stc_app_key_s *)key;
 686         stc_app_value_s *app_value = (stc_app_value_s *)value;
 687         time_t *touch_time = (time_t *)data;
 688         stc_db_classid_iftype_key stat_key;
 689         stc_db_app_stats stat;
 690         char *default_ifname = stc_default_connection_get_ifname();
 691
 692         memset(&stat_key, 0, sizeof(stc_db_classid_iftype_key));
 693         memset(&stat, 0 , sizeof(stc_db_app_stats));
 694
 695         stat_key.classid = app_value->classid;
 696         stat_key.iftype = stc_default_connection_get_type();
 697         if (STC_IFACE_DATACALL == stat_key.iftype)
 698                 stat_key.imsi = g_strdup("unknown");
 699         else
 700                 stat_key.imsi = g_strdup("noneimsi");
 701         g_strlcpy(stat_key.ifname, default_ifname, MAX_IFACE_LENGTH);
 702
 703         stat.app_id = g_strdup(app_key->app_id);
 704         stat.snd_count = app_value->counter.out_bytes;
 705         stat.rcv_count = app_value->counter.in_bytes;
 706         stat.delta_snd = 0;
 707         stat.delta_rcv = 0;
 708         stat.is_roaming = stc_default_connection_get_roaming();
 709         stat.ground = STC_APP_STATE_UNKNOWN;
 710
 711         table_statistics_insert(&stat_key, &stat, *touch_time);
 712
 713         app_value->counter.out_bytes = 0;
 714         app_value->counter.in_bytes = 0;
 715
 716         FREE(stat.app_id);
 717         FREE(stat_key.imsi);
 718         FREE(default_ifname);
 719
 720         return FALSE;
 721 }
 722
 723 static gboolean __flush_apps_stats_to_database(gpointer user_data)
 724 {
 725         time_t current_time = time(0);
 726
 727         if (g_system->apps_tree_updated == FALSE)
 728                 return G_SOURCE_REMOVE;
 729
 730         g_system->apps_tree_updated = FALSE;
 731
 732         if (g_system->apps)
 733                 g_tree_foreach(g_system->apps,
 734                                __update_app_statistics,
 735                                &current_time);
 736
 737         STC_LOGI("Flushed app stats to database");
 738         return G_SOURCE_REMOVE;
 739 }
 740
 741 static gboolean __update_counter_statistics(gpointer key, gpointer value,
 742                                             gpointer data)
 743 {
 744         stc_rstn_value_s *rstn_value = (stc_rstn_value_s *)value;
 745         table_counters_info info = {
 746                 .restriction_id = rstn_value->restriction_id,
 747                 .sent_bytes = rstn_value->counter.out_bytes,
 748                 .rcv_bytes = rstn_value->counter.in_bytes
 749         };
 750
 751         table_counters_update_counters(&info);
 752
 753         return FALSE;
 754 }
 755
 756 static gboolean __flush_rstns_counter_to_database(gpointer user_data)
 757 {
 758         time_t current_time = time(0);
 759
 760         if (g_system->rstns_tree_updated == FALSE)
 761                 return G_SOURCE_REMOVE;
 762
 763         g_system->rstns_tree_updated = FALSE;
 764
 765         if (g_system->rstns)
 766                 g_tree_foreach(g_system->rstns,
 767                                __update_counter_statistics,
 768                                &current_time);
 769
 770         STC_LOGI("Flushed rstns counters to database");
 771         return G_SOURCE_REMOVE;
 772 }
 773
 774 static gboolean __apps_counter_update_foreach_classid(gpointer key,
 775                                                       gpointer value,
 776                                                       gpointer data)
 777 {
 778         stc_app_key_s *app_key = (stc_app_key_s *)key;
 779         stc_app_value_s *app_value = (stc_app_value_s *)value;
 780         classid_bytes_context_s *context = (classid_bytes_context_s *)data;
 781
 782         if (context->counter->intend != NFACCT_COUNTER)
 783                 goto try_next_callback;
 784
 785         if (app_value->classid != context->counter->classid)
 786                 goto try_next_callback;
 787
 788         switch (context->counter->iotype) {
 789         case NFACCT_COUNTER_IN:
 790                 app_value->data_usage.in_bytes += context->bytes;
 791                 app_value->counter.in_bytes = context->bytes;
 792                 g_system->apps_tree_updated = TRUE;
 793
 794                 __apps_tree_foreach_print(app_key, app_value, NULL);
 795                 break;
 796         case NFACCT_COUNTER_OUT:
 797                 app_value->data_usage.out_bytes += context->bytes;
 798                 app_value->counter.out_bytes = context->bytes;
 799                 g_system->apps_tree_updated = TRUE;
 800
 801                 __apps_tree_foreach_print(app_key, app_value, NULL);
 802                 break;
 803         default:
 804                 STC_LOGE("unknown iotype");
 805         }
 806
 807 try_next_callback:
 808         return FALSE;
 809 }
 810
 811 static void __fill_nfacct_result(char *cnt_name, int64_t bytes,
 812                                  struct counter_arg *carg)
 813 {
 814         struct nfacct_rule counter = {
 815                 .carg = carg,
 816                 .name = {0},
 817                 .ifname = {0},
 818                 0
 819         };
 820
 821         classid_bytes_context_s context = {
 822                 .counter = &counter,
 823                 .bytes = bytes,
 824                 .in_limit_reached = FALSE,
 825                 .out_limit_reached = FALSE
 826         };
 827
 828         STC_LOGD("cnt_name %s", cnt_name);
 829
 830         if (!recreate_counter_by_name(cnt_name, &counter)) {
 831                 STC_LOGE("Can't parse counter name %s", cnt_name);
 832                 return;
 833         }
 834
 835         STC_LOGI("classid %lu, iftype %u, iotype %d, intend %d, ifname %s, bytes %lld",
 836                  context.counter->classid, context.counter->iftype,
 837                  context.counter->iotype, context.counter->intend,
 838                  context.counter->ifname, context.bytes);
 839
 840         if (g_system->rstns)
 841                 g_tree_foreach(g_system->rstns,
 842                                __rstn_counter_update_foreach_classid,
 843                                &context);
 844
 845         if (g_system->apps)
 846                 g_tree_foreach(g_system->apps,
 847                                __apps_counter_update_foreach_classid,
 848                                &context);
 849 }
 850
 851 static int __fill_counters(struct rtattr *attr_list[__NFACCT_MAX],
 852                            void *user_data)
 853 {
 854         struct counter_arg *carg = user_data;
 855         char *cnt_name = (char *)RTA_DATA(attr_list[NFACCT_NAME]);
 856         if (carg->initiate) {
 857                 /**
 858                  * TODO: this will be used when daemon starts to update existing
 859                  * counter data if present.
 860                  *
 861                  populate_counters(cnt_name, carg);
 862                  */
 863         } else {
 864                 int64_t *bytes_p =
 865                         (int64_t *)RTA_DATA(attr_list[NFACCT_BYTES]);
 866                 int bytes = be64toh(*bytes_p);
 867                 if (bytes) {
 868                         ++carg->serialized_counters;
 869                         __fill_nfacct_result(cnt_name, bytes, carg);
 870                 }
 871         }
 872
 873         return 0;
 874 }
 875
 876 static int __post_fill_counters(void *user_data)
 877 {
 878         struct counter_arg *carg = user_data;
 879
 880         if (carg->initiate)
 881                 carg->initiate = 0;
 882
 883         return 0;
 884 }
 885
 886 static void __process_network_counter(struct genl *ans,
 887                                       struct counter_arg *carg)
 888 {
 889         struct netlink_serialization_params ser_params = {
 890                 .carg = carg,
 891                 .ans = ans,
 892                 .eval_attr = __fill_counters,
 893                 .post_eval_attr = __post_fill_counters,
 894         };
 895
 896         netlink_serialization_command *netlink =
 897                 netlink_create_command(&ser_params);
 898         if (!netlink) {
 899                 STC_LOGE("Can not create command");
 900                 return;
 901         }
 902
 903         netlink->deserialize_answer(&(netlink->params));
 904 }
 905
 906 static gboolean __process_contr_reply(GIOChannel *source,
 907                                       GIOCondition condition,
 908                                       gpointer user_data)
 909 {
 910         int sock = g_io_channel_unix_get_fd(source);
 911         struct genl ans;
 912         int ret;
 913         stc_s *stc = stc_get_manager();
 914
 915         if ((condition & G_IO_ERR) ||
 916             (condition & G_IO_HUP) ||
 917             (condition & G_IO_NVAL)) {
 918                 /* G_IO_ERR/G_IO_HUP/G_IO_NVAL received */
 919
 920                 __close_contr_sock(g_system);
 921                 return FALSE;
 922         }
 923
 924         if (stc == NULL) {
 925                 STC_LOGE("Can't get stc data");
 926                 goto out;
 927         }
 928
 929         ret = read_netlink(sock,
 930                            &ans, sizeof(struct genl));
 931         STC_LOGD("Counter data received ret [%d]", ret);
 932         if (ret == 0)
 933                 goto out;
 934
 935         stc->carg->ans_len = ret;
 936         __process_network_counter(&ans, stc->carg);
 937
 938         g_idle_add(__flush_apps_stats_to_database, NULL);
 939         g_idle_add(__flush_rstns_counter_to_database, NULL);
 940 out:
 941         return TRUE;
 942 }
 943
 944 static gboolean __update_contr_cb(void *user_data)
 945 {
 946         /* Here we just sent command, answer we receive in another callback */
 947         stc_s *stc = stc_get_manager();
 948         ret_value_msg_if(stc == NULL, STC_ERROR_FAIL, "Can't get stc data");
 949         if (!stc->carg) {
 950                 stc->carg = MALLOC0(counter_arg_s, 1);
 951                 stc->carg->sock = stc_monitor_get_counter_socket();
 952         }
 953
 954         STC_LOGD("Get all counters");
 955         nfacct_send_get_all(stc->carg);
 956
 957         /* we need to continue the timer */
 958         return TRUE;
 959 }
 960 #if 0
 961 static gboolean __rstn_tree_foreach_print(gpointer key, gpointer value,
 962                                           gpointer data)
 963 {
 964         stc_rstn_key_s *rstn_key = (stc_rstn_key_s *)key;
 965         stc_rstn_value_s *rstn_value = (stc_rstn_value_s *)value;
 966
 967         __print_rstn(rstn_key, rstn_value);
 968         return FALSE;
 969 }
 970
 971 static void __rstn_tree_printall(void)
 972 {
 973         g_tree_foreach(g_system->rstns, __rstn_tree_foreach_print, NULL);
 974 }
 975 #endif
 976 static stc_rstn_value_s * __rstn_lookup(GTree *rstns_tree,
 977                                         const stc_rstn_key_s *key)
 978 {
 979         stc_rstn_value_s *lookup;
 980
 981         ret_value_msg_if(rstns_tree == NULL, NULL, "rstns_tree is null!");
 982
 983         lookup = g_tree_lookup(rstns_tree, key);
 984
 985         return lookup;
 986 }
 987
 988 static gboolean __remove_restriction(gpointer key, gpointer value,
 989                                      gpointer data)
 990 {
 991         stc_rstn_key_s *rstn_key = (stc_rstn_key_s *)key;
 992         stc_rstn_value_s *rstn_value = (stc_rstn_value_s *)value;
 993
 994         /* rstn rule is already removed */
 995         if (rstn_value->rst_state == STC_RESTRICTION_REMOVED)
 996                 return FALSE;
 997
 998         __process_restriction(RST_UNSET, rstn_key, rstn_value, data);
 999         __print_rstn(rstn_key, rstn_value);
1000         return FALSE;
1001 }
1002
1003 static gboolean __add_restriction_debug(gpointer key, gpointer value,
1004                                         gpointer data)
1005 {
1006         stc_rstn_key_s *rstn_key = (stc_rstn_key_s *)key;
1007         stc_rstn_value_s *rstn_value = (stc_rstn_value_s *)value;
1008
1009         /* rstn rule is activated */
1010         if (rstn_value->rst_state == STC_RESTRICTION_ACTIVATED)
1011                 return FALSE;
1012
1013         if (rstn_value->rst_state == STC_RESTRICTION_EXCLUDED)
1014                 __process_restriction(RST_EXCLUDE, rstn_key, rstn_value, data);
1015         else
1016                 __process_restriction(RST_SET, rstn_key, rstn_value, data);
1017
1018         __print_rstn(rstn_key, rstn_value);
1019
1020         return FALSE;
1021 }
1022
1023 static gboolean __add_restriction(gpointer key, gpointer value, gpointer data)
1024 {
1025         stc_rstn_key_s *rstn_key = (stc_rstn_key_s *)key;
1026         stc_rstn_value_s *rstn_value = (stc_rstn_value_s *)value;
1027
1028         /* rstn rule is activated */
1029         if (rstn_value->rst_state == STC_RESTRICTION_ACTIVATED)
1030                 return FALSE;
1031
1032         if (rstn_value->rst_state == STC_RESTRICTION_EXCLUDED)
1033                 __process_restriction(RST_EXCLUDE, rstn_key, rstn_value, data);
1034         else
1035                 __process_restriction(RST_SET, rstn_key, rstn_value, data);
1036
1037         return FALSE;
1038 }
1039
1040 static stc_error_e __rstn_tree_remove(stc_rstn_key_s *key)
1041 {
1042         stc_rstn_value_s *lookup_value;
1043
1044         ret_value_msg_if(g_system == NULL, STC_ERROR_FAIL, "stc monitor not initialized!");
1045
1046         lookup_value = __rstn_lookup(g_system->rstns, key);
1047         if (!lookup_value) {
1048                 STC_LOGE("key not found");
1049                 return STC_ERROR_NO_DATA;
1050         }
1051
1052         __remove_restriction(key, lookup_value, NULL);
1053
1054         /* remove counter also */
1055         table_counters_delete(lookup_value->restriction_id);
1056
1057         if (!g_tree_remove(g_system->rstns, key)) {
1058                 STC_LOGD("key not found");
1059                 return STC_ERROR_NO_DATA;
1060         }
1061
1062         return STC_ERROR_NONE;
1063 }
1064
1065 static stc_error_e __rstn_tree_add(stc_rstn_key_s *key,
1066                                    stc_rstn_value_s *value, gboolean debug)
1067 {
1068         stc_rstn_value_s *rstn_value;
1069
1070         ret_value_msg_if(g_system == NULL, STC_ERROR_FAIL, "stc monitor not initialized!");
1071
1072         rstn_value = __rstn_lookup(g_system->rstns, key);
1073         if (!rstn_value) {
1074                 stc_rstn_key_s *rstn_key = MALLOC0(stc_rstn_key_s, 1);
1075                 if (!rstn_key) {
1076                         STC_LOGE("rstn_key allocation failed");
1077                         return STC_ERROR_OUT_OF_MEMORY;
1078                 }
1079
1080                 rstn_value = MALLOC0(stc_rstn_value_s, 1);
1081                 if (!rstn_value) {
1082                         STC_LOGE("rstn_value allocation failed");
1083                         FREE(rstn_key);
1084                         return STC_ERROR_OUT_OF_MEMORY;
1085                 }
1086
1087                 rstn_key->app_id = g_strdup(key->app_id);
1088                 rstn_key->ifname = g_strdup(key->ifname);
1089                 rstn_key->imsi = g_strdup(key->imsi);
1090                 rstn_key->iftype = key->iftype;
1091                 rstn_key->roaming = key->roaming;
1092
1093                 g_tree_insert(g_system->rstns, rstn_key, rstn_value);
1094         }
1095
1096         rstn_value->restriction_id = value->restriction_id;
1097         rstn_value->rst_state = value->rst_state;
1098         rstn_value->classid = value->classid;
1099         rstn_value->limit.in_bytes = value->limit.in_bytes;
1100         rstn_value->limit.out_bytes = value->limit.out_bytes;
1101         rstn_value->warn_limit.in_bytes = value->warn_limit.in_bytes;
1102         rstn_value->warn_limit.out_bytes = value->warn_limit.out_bytes;
1103         rstn_value->counter.in_bytes = 0;
1104         rstn_value->counter.out_bytes = 0;
1105         rstn_value->warn_limit_crossed_notified = FALSE;
1106         rstn_value->rstn_limit_crossed_notified = FALSE;
1107
1108         if (debug == TRUE)
1109                 __add_restriction_debug(key, rstn_value, NULL);
1110         else
1111                 __add_restriction(key, rstn_value, NULL);
1112
1113         return STC_ERROR_NONE;
1114 }
1115
1116 static stc_cb_ret_e __insert_restriction_cb(const table_restrictions_info *info,
1117                                             void *user_data)
1118 {
1119         stc_cb_ret_e ret = STC_CONTINUE;
1120
1121         stc_rstn_key_s key;
1122         stc_rstn_value_s value;
1123
1124         memset(&key, 0, sizeof(stc_rstn_key_s));
1125         memset(&value, 0, sizeof(stc_rstn_value_s));
1126
1127         key.app_id = g_strdup(info->app_id);
1128         key.ifname = g_strdup(info->ifname);
1129         key.imsi = g_strdup(info->imsi);
1130         key.iftype = info->iftype;
1131         key.roaming = info->roaming;
1132
1133         value.rst_state = info->rst_state;
1134         value.restriction_id = info->restriction_id;
1135
1136         if (value.rst_state != STC_RESTRICTION_EXCLUDED && info->app_id)
1137                 value.classid = get_classid_by_app_id(info->app_id, TRUE);
1138         else
1139                 value.classid = STC_UNKNOWN_CLASSID;
1140
1141         value.limit.in_bytes = info->rcv_limit;
1142         value.limit.out_bytes = info->send_limit;
1143         value.warn_limit.in_bytes = info->rcv_warn_limit;
1144         value.warn_limit.out_bytes = info->send_warn_limit;
1145
1146         if (__rstn_tree_add(&key, &value, FALSE) != STC_ERROR_NONE)
1147                 ret = STC_CANCEL;
1148
1149         FREE(key.app_id);
1150         FREE(key.ifname);
1151         FREE(key.imsi);
1152         return ret;
1153 }
1154
1155 static void __fill_restritions_list(void)
1156 {
1157         table_restrictions_foreach(__insert_restriction_cb, NULL);
1158         //__rstn_tree_printall();
1159 }
1160
1161 static gboolean __add_rstn_foreach_application(gpointer key,
1162                                                gpointer value,
1163                                                gpointer data)
1164 {
1165         stc_rstn_key_s *rstn_key = (stc_rstn_key_s *)key;
1166         stc_rstn_value_s *rstn_value = (stc_rstn_value_s *)value;
1167         gchar *app_id = (gchar *)data;
1168
1169         /* rstn rule is not for applications */
1170         if (rstn_key->app_id == NULL)
1171                 goto out;
1172
1173         /* rstn rule is not for this application */
1174         if (g_strcmp0(rstn_key->app_id, app_id) != 0)
1175                 goto out;
1176
1177         /* rstn rule is already applied */
1178         if (rstn_value->rst_state == STC_RESTRICTION_ACTIVATED)
1179                 goto out;
1180
1181         /* add restriction to system */
1182         if (rstn_value->rst_state == STC_RESTRICTION_EXCLUDED)
1183                 __process_restriction(RST_EXCLUDE, rstn_key, rstn_value, data);
1184         else
1185                 __process_restriction(RST_SET, rstn_key, rstn_value, data);
1186
1187         __print_rstn(rstn_key, rstn_value);
1188 out:
1189         return FALSE;
1190 }
1191
1192 static void __add_rstns_for_application(gchar *app_id)
1193 {
1194         g_tree_foreach(g_system->rstns, __add_rstn_foreach_application,
1195                        app_id);
1196 }
1197
1198 stc_error_e stc_monitor_init(void)
1199 {
1200         stc_system_s *system = MALLOC0(stc_system_s, 1);
1201         GIOChannel *gio = NULL;
1202
1203         ret_value_msg_if(system == NULL, STC_ERROR_OUT_OF_MEMORY, "stc_system_s malloc fail!");
1204
1205         /* initializing cgroups */
1206         cgroup_init();
1207
1208         /* creating monitored application tree */
1209         system->apps = g_tree_new_full(__apps_tree_key_compare, NULL,
1210                                        __apps_tree_key_free,
1211                                        __apps_tree_value_free);
1212
1213         system->rstns = g_tree_new_full(__rstns_tree_key_compare, NULL,
1214                                         __rstns_tree_key_free,
1215                                         __rstns_tree_value_free);
1216
1217         /* create netlink socket for updating kernel counters */
1218         system->contr_sock = create_netlink(NETLINK_NETFILTER, 0);
1219         if (!(system->contr_sock)) {
1220                 STC_LOGE("failed to open socket");
1221                 FREE(system);
1222                 return STC_ERROR_FAIL;
1223         }
1224
1225         gio = g_io_channel_unix_new(system->contr_sock);
1226         system->contr_gsource_id =
1227                 g_io_add_watch(gio, G_IO_IN | G_IO_ERR | G_IO_HUP,
1228                                (GIOFunc) __process_contr_reply,
1229                                NULL);
1230         g_io_channel_unref(gio);
1231
1232         g_system = system;
1233
1234         /* creating restriction rules tree */
1235         __update_contr_cb(NULL);
1236
1237         /* registering periodic kernel counters update callback */
1238         g_system->contr_timer_id = g_timeout_add_seconds(CONTR_TIMER_INTERVAL,
1239                                                          __update_contr_cb,
1240                                                          NULL);
1241         if (g_system->contr_timer_id == 0) {
1242                 STC_LOGE("Failed to register kernel counters update timer");
1243                 __close_contr_sock(g_system);
1244                 return STC_ERROR_FAIL;
1245         }
1246
1247         __fill_restritions_list();
1248
1249         return STC_ERROR_NONE;
1250 }
1251
1252 stc_error_e stc_monitor_deinit(void)
1253 {
1254         ret_value_msg_if(g_system == NULL, STC_ERROR_FAIL, "stc monitor not initialized!");
1255
1256         /* close netlink socket for updating kernel counters */
1257         __close_contr_sock(g_system);
1258
1259         /* remove kernel counters update timer */
1260         if (g_system->contr_timer_id > 0) {
1261                 g_source_remove(g_system->contr_timer_id);
1262                 g_system->contr_timer_id = 0;
1263         }
1264
1265         /* destroy monitored application tree */
1266         g_tree_destroy(g_system->apps);
1267         g_system->apps = NULL;
1268
1269         /* destroy restriction rules tree */
1270         g_tree_destroy(g_system->rstns);
1271         g_system->rstns = NULL;
1272
1273         FREE(g_system);
1274
1275         return STC_ERROR_NONE;
1276 }
1277
1278 stc_error_e stc_monitor_application_add(const stc_app_key_s app_key,
1279                                         const stc_app_value_s app_value)
1280 {
1281         stc_error_e ret = STC_ERROR_NONE;
1282         stc_app_key_s *key;
1283         stc_app_value_s *value;
1284         stc_app_value_s *lookup;
1285
1286         ret_value_msg_if(g_system == NULL, STC_ERROR_FAIL, "stc monitor not initialized!");
1287
1288         lookup = __application_lookup(g_system->apps, &app_key);
1289         if (lookup) {
1290                 STC_LOGD("app_key already present");
1291                 return STC_ERROR_NONE;
1292         }
1293
1294         key = MALLOC0(stc_app_key_s, 1);
1295         if (!key) {
1296                 STC_LOGE("key allocation failed");
1297                 return STC_ERROR_OUT_OF_MEMORY;
1298         }
1299
1300         value = MALLOC0(stc_app_value_s, 1);
1301         if (!value) {
1302                 STC_LOGE("value allocation failed");
1303                 FREE(key);
1304                 return STC_ERROR_OUT_OF_MEMORY;
1305         }
1306
1307         key->app_id = g_strdup(app_key.app_id);
1308         key->pkg_id = g_strdup(app_key.pkg_id);
1309
1310         value->type = app_value.type;
1311         value->counter.in_bytes = app_value.counter.in_bytes;
1312         value->counter.out_bytes = app_value.counter.out_bytes;
1313
1314         value->processes = g_tree_new_full(__processes_tree_key_compare, NULL,
1315                                            __processes_tree_key_free,
1316                                            __processes_tree_value_free);
1317
1318         /* create cgroup and update classid */
1319         value->classid = get_classid_by_app_id(app_key.app_id, TRUE);
1320
1321         g_tree_insert(g_system->apps, key, value);
1322
1323         /* add nfacct rule for this classid */
1324         __add_application_monitor(key, value, stc_get_default_connection());
1325         __add_rstns_for_application(app_key.app_id);
1326
1327         return ret;
1328 }
1329
1330 stc_error_e stc_monitor_process_add(const stc_app_key_s app_key,
1331                                     const stc_process_key_s proc_key,
1332                                     const stc_process_value_s proc_value)
1333 {
1334         stc_error_e ret = STC_ERROR_NONE;
1335         stc_app_value_s *app_lookup;
1336         stc_process_key_s *key;
1337         stc_process_value_s *value;
1338         stc_process_value_s *proc_lookup;
1339
1340         ret_value_msg_if(g_system == NULL, STC_ERROR_FAIL, "stc monitor not initialized!");
1341
1342         app_lookup = __application_lookup(g_system->apps, &app_key);
1343         if (!app_lookup) {
1344                 STC_LOGD("app_key not found");
1345                 return STC_ERROR_FAIL;
1346         }
1347
1348         proc_lookup = __process_lookup(app_lookup->processes, &proc_key);
1349         if (proc_lookup) {
1350                 STC_LOGD("proc_key already present");
1351                 return STC_ERROR_NONE;
1352         }
1353
1354         key = MALLOC0(stc_process_key_s, 1);
1355         if (!key) {
1356                 STC_LOGE("key allocation failed");
1357                 return STC_ERROR_OUT_OF_MEMORY;
1358         }
1359
1360         value = MALLOC0(stc_process_value_s, 1);
1361         if (!value) {
1362                 STC_LOGE("value allocation failed");
1363                 FREE(key);
1364                 return STC_ERROR_OUT_OF_MEMORY;
1365         }
1366
1367         key->pid = proc_key.pid;
1368
1369         value->ground = proc_value.ground;
1370
1371         g_tree_insert(app_lookup->processes, key, value);
1372
1373         /* add pid to application cgroup */
1374         place_pids_to_net_cgroup(proc_key.pid, app_key.app_id);
1375
1376         return ret;
1377 }
1378
1379 stc_error_e stc_monitor_process_remove(pid_t pid)
1380 {
1381         stc_error_e ret = STC_ERROR_NONE;
1382         stc_process_key_s proc_key = {
1383                 .pid = pid
1384         };
1385
1386         remove_pid_context_s context = {
1387                 .app_key = NULL,
1388                 .proc_key = &proc_key,
1389                 .entry_removed = FALSE,
1390         };
1391
1392         ret_value_msg_if(g_system == NULL, STC_ERROR_FAIL, "stc monitor not initialized!");
1393
1394         g_tree_foreach(g_system->apps, __apps_tree_foreach_remove_pid,
1395                        &context);
1396
1397         if (context.entry_removed)
1398                 __application_remove_if_empty(context.app_key);
1399
1400         return ret;
1401 }
1402
1403 stc_error_e stc_monitor_process_update_ground(const stc_app_key_s app_key,
1404                                               const stc_process_key_s proc_key,
1405                                               stc_app_state_e ground)
1406 {
1407         stc_error_e ret = STC_ERROR_NONE;
1408         stc_app_value_s *app_lookup;
1409         stc_process_value_s *proc_lookup;
1410
1411         ret_value_msg_if(g_system == NULL, STC_ERROR_FAIL, "stc monitor not initialized!");
1412
1413         app_lookup = __application_lookup(g_system->apps, &app_key);
1414         if (!app_lookup) {
1415                 STC_LOGD("app_key not found");
1416                 return STC_ERROR_FAIL;
1417         }
1418
1419         proc_lookup = __process_lookup(app_lookup->processes, &proc_key);
1420         if (!proc_lookup) {
1421                 STC_LOGD("proc_key not found");
1422                 return STC_ERROR_FAIL;
1423         }
1424
1425         if (proc_lookup->ground != ground)
1426                 proc_lookup->ground = ground;
1427
1428         if (ground == STC_APP_STATE_BACKGROUND) {
1429                 char *background_app_id = g_strconcat(app_key.app_id,
1430                                                      STC_BACKGROUND_APP_SUFFIX,
1431                                                      NULL);
1432                 place_pids_to_net_cgroup(proc_key.pid, background_app_id);
1433                 g_free(background_app_id);
1434         } else {
1435                 place_pids_to_net_cgroup(proc_key.pid, app_key.app_id);
1436         }
1437
1438         return ret;
1439 }
1440
1441 void stc_monitor_update_rstn_by_default_connection(void *data)
1442 {
1443         static default_connection_s old_connection;
1444         default_connection_s *new_connection = (default_connection_s *)data;
1445
1446         if (old_connection.path != NULL) {
1447                 if (g_system->apps)
1448                         g_tree_foreach(g_system->apps,
1449                                        __remove_application_monitor,
1450                                        (gpointer)&old_connection);
1451
1452                 if (g_system->rstns)
1453                         g_tree_foreach(g_system->rstns,
1454                                        __remove_restriction,
1455                                        (gpointer)&old_connection);
1456         }
1457
1458         FREE(old_connection.path);
1459         FREE(old_connection.ifname);
1460         old_connection.type = 0;
1461         old_connection.roaming = 0;
1462
1463         if (new_connection != NULL && new_connection->path != NULL) {
1464                 if (g_system->apps)
1465                         g_tree_foreach(g_system->apps,
1466                                        __add_application_monitor,
1467                                        (gpointer)new_connection);
1468
1469                 if (g_system->rstns)
1470                         g_tree_foreach(g_system->rstns, __add_restriction,
1471                                        NULL);
1472
1473                 old_connection.path = g_strdup(new_connection->path);
1474                 old_connection.ifname = g_strdup(new_connection->ifname);
1475                 old_connection.type = new_connection->type;
1476                 old_connection.roaming = new_connection->roaming;
1477         }
1478 }
1479
1480 stc_error_e stc_monitor_rstns_tree_add(const table_restrictions_info *info)
1481 {
1482         stc_error_e ret;
1483
1484         stc_rstn_key_s key;
1485         stc_rstn_value_s value;
1486
1487         memset(&key, 0, sizeof(stc_rstn_key_s));
1488         memset(&value, 0, sizeof(stc_rstn_value_s));
1489
1490         key.app_id = g_strdup(info->app_id);
1491         key.ifname = g_strdup(info->ifname);
1492         key.imsi = g_strdup(info->imsi);
1493         key.iftype = info->iftype;
1494         key.roaming = info->roaming;
1495
1496         value.rst_state = info->rst_state;
1497         value.restriction_id = info->restriction_id;
1498
1499         if (value.rst_state != STC_RESTRICTION_EXCLUDED && info->app_id)
1500                 value.classid = get_classid_by_app_id(info->app_id, TRUE);
1501         else
1502                 value.classid = STC_UNKNOWN_CLASSID;
1503
1504         value.limit.in_bytes = info->rcv_limit;
1505         value.limit.out_bytes = info->send_limit;
1506         value.warn_limit.in_bytes = info->rcv_warn_limit;
1507         value.warn_limit.out_bytes = info->send_warn_limit;
1508
1509         ret = __rstn_tree_add(&key, &value, TRUE);
1510
1511         FREE(key.app_id);
1512         FREE(key.ifname);
1513         FREE(key.imsi);
1514         return ret;
1515 }
1516
1517 stc_error_e stc_monitor_rstns_tree_remove(const table_restrictions_info *info)
1518 {
1519         stc_error_e ret;
1520
1521         stc_rstn_key_s key = {
1522                 .app_id = g_strdup(info->app_id),
1523                 .ifname = g_strdup(info->ifname),
1524                 .imsi = g_strdup(info->imsi),
1525                 .iftype = info->iftype,
1526                 .roaming = info->roaming,
1527         };
1528
1529         ret = __rstn_tree_remove(&key);
1530
1531         FREE(key.app_id);
1532         FREE(key.ifname);
1533         FREE(key.imsi);
1534         return ret;
1535 }
1536
1537 int stc_monitor_get_counter_socket(void)
1538 {
1539         return g_system->contr_sock;
1540 }