src/message_port_remote.c

   1 /*
   2  * Copyright (c) 2017 Samsung Electronics Co., Ltd All Rights Reserved
   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 #define _GNU_SOURCE
  18
  19 #include <bundle.h>
  20 #include <bundle_internal.h>
  21 #include <aul.h>
  22
  23 #include <sys/socket.h>
  24 #include <stdlib.h>
  25 #include <stdio.h>
  26
  27 #include <glib.h>
  28 #include <gio/gio.h>
  29 #include <gio/gunixfdlist.h>
  30 #include <glib-unix.h>
  31
  32 #include "message_port_log.h"
  33 #include "message_port_common.h"
  34 #include "message_port_remote.h"
  35
  36
  37 #define MAX_PACKAGE_STR_SIZE 512
  38
  39 #define DBUS_RELEASE_NAME_REPLY_RELEASED        1 /* *< Service was released from the given name */
  40 #define DBUS_RELEASE_NAME_REPLY_NON_EXISTENT    2 /* *< The given name does not exist on the bus */
  41 #define DBUS_RELEASE_NAME_REPLY_NOT_OWNER       3 /* *< Service is not an owner of the given name */
  42
  43 #define MAX_RETRY_CNT 10
  44 #define SOCK_PAIR_SENDER 0
  45 #define SOCK_PAIR_RECEIVER 1
  46
  47 static bool _initialized = false;
  48 static GHashTable *__local_port_info;
  49 static GHashTable *__trusted_app_list_hash;
  50 static GHashTable *__callback_info_hash;
  51 static GHashTable *__sender_appid_hash;
  52
  53 typedef struct message_port_pkt {
  54         int remote_port_name_len;
  55         char *remote_port_name;
  56         bool is_bidirection;
  57         bool is_trusted;
  58         int data_len;
  59         unsigned char *data;
  60 } message_port_pkt_s;
  61
  62 typedef struct message_port_callback_info {
  63         message_port_local_port_info_s *local_info;
  64         int local_id;
  65         char *remote_app_id;
  66         GIOChannel *gio_read;
  67         int g_src_id;
  68 } message_port_callback_info_s;
  69
  70 typedef struct callback_key_info {
  71         int local_id;
  72         message_port_callback_info_s *callback_info;
  73 } callback_key_info_s;
  74
  75 static void __callback_info_free(gpointer data)
  76 {
  77         message_port_callback_info_s *callback_info = (message_port_callback_info_s *)data;
  78         GError *error = NULL;
  79         if (callback_info == NULL)
  80                 return;
  81
  82         if (callback_info->remote_app_id)
  83                 FREE_AND_NULL(callback_info->remote_app_id);
  84
  85         if (callback_info->local_info) {
  86                 if (callback_info->local_info->port_name)
  87                                 FREE_AND_NULL(callback_info->local_info->port_name);
  88
  89                 FREE_AND_NULL(callback_info->local_info);
  90         }
  91
  92         if (callback_info->gio_read != NULL) {
  93                 g_io_channel_shutdown(callback_info->gio_read, TRUE, &error);
  94                 if (error) {
  95                         _LOGE("g_io_channel_shutdown error : %s", error->message);
  96                         g_error_free(error);
  97                 }
  98                 g_io_channel_unref(callback_info->gio_read);
  99                 callback_info->gio_read = NULL;
 100         }
 101
 102         if (callback_info->g_src_id != 0) {
 103                 g_source_remove(callback_info->g_src_id);
 104                 callback_info->g_src_id = 0;
 105         }
 106
 107         FREE_AND_NULL(callback_info);
 108 }
 109
 110 /* LCOV_EXCL_START */
 111 static void __callback_info_free_by_info(message_port_callback_info_s *callback_info)
 112 {
 113         GList *callback_info_list = g_hash_table_lookup(__callback_info_hash, GUINT_TO_POINTER(callback_info->local_id));
 114         GList *find_list;
 115
 116         if (callback_info_list == NULL)
 117                 return;
 118
 119         find_list = g_list_find(callback_info_list, callback_info);
 120         if (find_list == NULL)
 121                 return;
 122
 123         callback_info_list = g_list_remove_link(callback_info_list, find_list);
 124         __callback_info_free(callback_info);
 125         g_list_free(find_list);
 126 }
 127 /* LCOV_EXCL_STOP */
 128
 129 static void __hash_destroy_callback_info(gpointer data)
 130 {
 131         GList *callback_list = (GList *)data;
 132
 133         if (callback_list != NULL)
 134                 g_list_free_full(callback_list, __callback_info_free);
 135 }
 136
 137 /* LCOV_EXCL_START */
 138 static void __hash_destory_local_value(gpointer data)
 139 {
 140         message_port_local_port_info_s *mli = (message_port_local_port_info_s *)data;
 141         if (mli) {
 142                 if (mli->port_name)
 143                         free(mli->port_name);
 144                 free(mli);
 145         }
 146 }
 147 /* LCOV_EXCL_STOP */
 148
 149 static bool __initialize(void)
 150 {
 151         if (!initialized_common) {
 152                 if (!initialize_common())
 153                         return false;
 154         }
 155
 156         if (__local_port_info == NULL) {
 157                 __local_port_info = g_hash_table_new_full(g_direct_hash,  g_direct_equal, NULL, __hash_destory_local_value);
 158                 retvm_if(!__local_port_info, false, "fail to create __local_port_info");
 159         }
 160
 161         if (__sender_appid_hash == NULL) {
 162                 __sender_appid_hash = g_hash_table_new_full(g_str_hash, g_str_equal, free, free);
 163                 retvm_if(!__sender_appid_hash, false, "fail to create __sender_appid_hash");
 164         }
 165
 166         if (__trusted_app_list_hash == NULL) {
 167                 __trusted_app_list_hash = g_hash_table_new_full(g_str_hash, g_str_equal, free, NULL);
 168                 retvm_if(!__trusted_app_list_hash, false, "fail to create __trusted_app_list_hash");
 169         }
 170
 171         if (__callback_info_hash == NULL) {
 172                 __callback_info_hash = g_hash_table_new_full(g_direct_hash, g_direct_equal, NULL, __hash_destroy_callback_info);
 173                 retvm_if(!__callback_info_hash, false, "fail to create __callback_info_hash");
 174         }
 175
 176         _initialized = true;
 177
 178         return true;
 179 }
 180
 181 bool is_local_port_registed(const char *local_port, bool trusted, int *local_id, message_port_local_port_info_s **lpi)
 182 {
 183         GHashTableIter iter;
 184         gpointer key, value;
 185
 186         g_hash_table_iter_init(&iter, __local_port_info);
 187         while (g_hash_table_iter_next(&iter, &key, &value)) {
 188                 message_port_local_port_info_s *mi = (message_port_local_port_info_s *)value;
 189
 190                 if ((mi->is_trusted == trusted) && strcmp(mi->port_name, local_port) == 0) {
 191                         *local_id = mi->local_id;
 192                         if (lpi != NULL)
 193                                 *lpi = mi;
 194                         return true;
 195                 }
 196         }
 197         return false;
 198 }
 199
 200 static int __get_sender_pid(GDBusConnection *conn, const char *sender_name)
 201 {
 202         GDBusMessage *msg = NULL;
 203         GDBusMessage *reply = NULL;
 204         GError *err = NULL;
 205         GVariant *body;
 206         int pid = 0;
 207
 208         msg = g_dbus_message_new_method_call("org.freedesktop.DBus", "/org/freedesktop/DBus",
 209                         "org.freedesktop.DBus", "GetConnectionUnixProcessID");
 210         if (!msg) {
 211                 _LOGE("Can't allocate new method call");
 212                 goto out;
 213         }
 214
 215         g_dbus_message_set_body(msg, g_variant_new("(s)", sender_name));
 216         reply = g_dbus_connection_send_message_with_reply_sync(conn, msg,
 217                                                         G_DBUS_SEND_MESSAGE_FLAGS_NONE, -1, NULL, NULL, &err);
 218
 219         if (!reply) {
 220                 if (err != NULL) {
 221                         _LOGE("Failed to get pid [%s]", err->message);
 222                         g_error_free(err);
 223                 }
 224                 goto out;
 225         }
 226
 227         body = g_dbus_message_get_body(reply);
 228         g_variant_get(body, "(u)", &pid);
 229
 230 out:
 231         if (msg)
 232                 g_object_unref(msg);
 233         if (reply)
 234                 g_object_unref(reply);
 235
 236         return pid;
 237 }
 238
 239 static message_port_pkt_s *__message_port_recv_raw(int fd)
 240 {
 241         message_port_pkt_s *pkt = NULL;
 242         unsigned int nb;
 243
 244         pkt = (message_port_pkt_s *)calloc(sizeof(message_port_pkt_s), 1);
 245         if (pkt == NULL) {
 246                 close(fd);
 247                 return NULL;
 248         }
 249
 250         if (read_string_from_socket(fd, (char **)&pkt->remote_port_name, &pkt->remote_port_name_len) != MESSAGE_PORT_ERROR_NONE) {
 251 /* LCOV_EXCL_START */
 252                 LOGE("read socket fail: port_name");
 253                 free(pkt->remote_port_name);
 254                 free(pkt);
 255                 return NULL;
 256 /* LCOV_EXCL_STOP */
 257         }
 258
 259         if (read_socket(fd, (char *)&pkt->is_bidirection, sizeof(pkt->is_bidirection), &nb) != MESSAGE_PORT_ERROR_NONE) {
 260 /* LCOV_EXCL_START */
 261                 LOGE("read socket fail: is_bidirection");
 262                 free(pkt->remote_port_name);
 263                 free(pkt);
 264                 return NULL;
 265 /* LCOV_EXCL_STOP */
 266         }
 267
 268         if (read_socket(fd, (char *)&pkt->is_trusted, sizeof(pkt->is_trusted), &nb) != MESSAGE_PORT_ERROR_NONE) {
 269 /* LCOV_EXCL_START */
 270                 LOGE("read socket fail: is_trusted");
 271                 free(pkt->remote_port_name);
 272                 free(pkt);
 273                 return NULL;
 274 /* LCOV_EXCL_STOP */
 275         }
 276
 277         if (read_string_from_socket(fd, (char **)&pkt->data, &pkt->data_len) != MESSAGE_PORT_ERROR_NONE) {
 278 /* LCOV_EXCL_START */
 279                 LOGE("read socket fail: data");
 280                 if (pkt->data)
 281                         free(pkt->data);
 282                 free(pkt->remote_port_name);
 283                 free(pkt);
 284                 return NULL;
 285 /* LCOV_EXCL_STOP */
 286         }
 287
 288         return pkt;
 289 }
 290
 291 static bool __validate_callback_info(callback_key_info_s *key_info)
 292 {
 293         GList *cb_list;
 294
 295         cb_list = g_hash_table_lookup(__callback_info_hash,
 296                         GUINT_TO_POINTER(key_info->local_id));
 297         if (cb_list == NULL) {
 298                 _LOGI("local_info : %d is already released", key_info->local_id);
 299                 return false;
 300         }
 301
 302         cb_list = g_list_find(cb_list, key_info->callback_info);
 303         if (cb_list == NULL) {
 304                 _LOGI("local_info : %d is already released", key_info->local_id);
 305                 return false;
 306         }
 307
 308         return true;
 309 }
 310
 311 static bool __validate_local_info(callback_key_info_s *key_info)
 312 {
 313         GList *cb_list;
 314
 315         cb_list = g_hash_table_lookup(__local_port_info,
 316                         GUINT_TO_POINTER(key_info->local_id));
 317         if (cb_list == NULL) {
 318                 _LOGI("local_info : %d is already released", key_info->local_id);
 319                 return false;
 320         }
 321
 322         return true;
 323 }
 324
 325 static gboolean __socket_request_handler(GIOChannel *gio,
 326                 GIOCondition cond,
 327                 gpointer data)
 328 {
 329         int fd = 0;
 330         message_port_callback_info_s *mi = NULL;
 331         callback_key_info_s *key_info;
 332         message_port_pkt_s *pkt = NULL;
 333         message_port_local_port_info_s *local_port_info;
 334         bundle *kb = NULL;
 335         bool ret = true;
 336         bool existed = true;
 337
 338         key_info = (callback_key_info_s *)data;
 339         if (key_info == NULL)
 340                 return FALSE;
 341
 342         message_port_lock_mutex();
 343         if (__validate_callback_info(key_info) == false) {
 344                 ret = FALSE;
 345                 existed = FALSE;
 346                 message_port_unlock_mutex();
 347                 goto out;
 348         }
 349
 350         if (__validate_local_info(key_info) == false) {
 351                 ret = FALSE;
 352                 message_port_unlock_mutex();
 353                 goto out;
 354         }
 355         message_port_unlock_mutex();
 356
 357         mi = key_info->callback_info;
 358
 359         local_port_info = mi->local_info;
 360         if (local_port_info == NULL || local_port_info->callback == NULL) {
 361                 _LOGE("Failed to get callback info");
 362                 ret = FALSE;
 363                 goto out;
 364         }
 365
 366         if (cond == G_IO_HUP) {
 367                 _LOGI("socket G_IO_HUP");
 368                 ret = FALSE;
 369                 goto out;
 370         }
 371
 372         fd = g_io_channel_unix_get_fd(gio);
 373         if (fd < 0) {
 374                 _LOGE("fail to get fd from io channel");
 375                 ret = FALSE;
 376                 goto out;
 377         }
 378
 379         pkt = __message_port_recv_raw(fd);
 380         if (pkt == NULL) {
 381                 _LOGE("recv error on SOCKET");
 382                 ret = FALSE;
 383                 goto out;
 384         }
 385
 386         kb = bundle_decode(pkt->data, pkt->data_len);
 387         if (!kb) {
 388                 _LOGE("Invalid argument : message");
 389                 ret = FALSE;
 390                 goto out;
 391         }
 392
 393         if (pkt->is_bidirection)
 394                 local_port_info->callback(mi->local_id, mi->remote_app_id,
 395                         pkt->remote_port_name, pkt->is_trusted, kb, local_port_info->user_data);
 396         else
 397                 local_port_info->callback(mi->local_id, mi->remote_app_id,
 398                         NULL, pkt->is_trusted, kb, local_port_info->user_data);
 399
 400         bundle_free(kb);
 401
 402 out:
 403         if (pkt) {
 404                 if (pkt->remote_port_name)
 405                         free(pkt->remote_port_name);
 406                 if (pkt->data)
 407                         free(pkt->data);
 408                 free(pkt);
 409         }
 410
 411         if (mi && ret == FALSE && existed == TRUE) {
 412                 message_port_lock_mutex();
 413                 __callback_info_free_by_info(mi);
 414                 message_port_unlock_mutex();
 415         }
 416
 417         return ret;
 418 }
 419
 420
 421 static void __socket_destroy_handler(gpointer data)
 422 {
 423         _LOGI("__socket_destroy_handler");
 424         callback_key_info_s *key_info = (callback_key_info_s *)data;
 425         free(key_info);
 426 }
 427
 428 static callback_key_info_s *__create_callback_key_info(message_port_callback_info_s *callback_info)
 429 {
 430         callback_key_info_s *_key_info = (callback_key_info_s *)
 431                 calloc(1, sizeof(callback_key_info_s));
 432
 433         if (_key_info == NULL) {
 434                 _LOGE("out of memory");
 435                 return NULL;
 436         }
 437
 438         _key_info->local_id = callback_info->local_id;
 439         _key_info->callback_info = callback_info;
 440
 441         return _key_info;
 442 }
 443
 444 static message_port_callback_info_s *__create_callback_info(message_port_local_port_info_s *mi, char *local_appid)
 445 {
 446         message_port_local_port_info_s *local_info = NULL;
 447         message_port_callback_info_s *callback_info = NULL;
 448         bool ret = true;
 449
 450         callback_info = (message_port_callback_info_s *)calloc(1, sizeof(message_port_callback_info_s));
 451         if (callback_info == NULL) {
 452                 _LOGE("out of memory");
 453                 return NULL;
 454         }
 455
 456         local_info = (message_port_local_port_info_s *)calloc(1, sizeof(message_port_local_port_info_s));
 457         if (local_info == NULL) {
 458                 ret = false;
 459                 _LOGE("out of memory");
 460                 goto out;
 461         }
 462
 463         callback_info->local_id = mi->local_id;
 464         callback_info->local_info = local_info;
 465         callback_info->remote_app_id = strdup(local_appid);
 466         if (callback_info->remote_app_id == NULL) {
 467                 ret = false;
 468                 _LOGE("out of memory");
 469                 goto out;
 470         }
 471
 472         local_info->port_name = strdup(mi->port_name);
 473         if (local_info->port_name == NULL) {
 474                 ret = false;
 475                 _LOGE("out of memory");
 476                 goto out;
 477         }
 478
 479         local_info->callback = mi->callback;
 480         local_info->is_trusted = mi->is_trusted;
 481         local_info->local_id = mi->local_id;
 482         local_info->user_data = mi->user_data;
 483
 484 out:
 485         if (ret == false) {
 486                 __callback_info_free(callback_info);
 487                 return NULL;
 488         }
 489
 490         return callback_info;
 491 }
 492
 493 static bool __callback_info_append(message_port_callback_info_s *callback_info)
 494 {
 495         GList *callback_info_list = NULL;
 496         message_port_callback_info_s *head_callback_info;
 497
 498         callback_info_list = g_hash_table_lookup(__callback_info_hash, GUINT_TO_POINTER(callback_info->local_id));
 499         if (callback_info_list == NULL) {
 500                 head_callback_info = (message_port_callback_info_s *)calloc(1, sizeof(message_port_callback_info_s));
 501                 if (head_callback_info == NULL) {
 502                         _LOGE("fail to alloc head_callback_info");
 503                         return false;
 504                 }
 505                 head_callback_info->local_id = 0;
 506                 head_callback_info->remote_app_id = NULL;
 507                 head_callback_info->local_info = NULL;
 508                 head_callback_info->gio_read = NULL;
 509                 head_callback_info->g_src_id = 0;
 510                 callback_info_list = g_list_append(callback_info_list, head_callback_info);
 511                 callback_info_list = g_list_append(callback_info_list, callback_info);
 512                 g_hash_table_insert(__callback_info_hash, GUINT_TO_POINTER(callback_info->local_id), callback_info_list);
 513         } else {
 514                 callback_info_list = g_list_append(callback_info_list, callback_info);
 515         }
 516
 517         return true;
 518 }
 519
 520 static void __callback_info_update_user_data(int local_id, message_port_message_cb callback, void *user_data)
 521 {
 522         GList *callback_info_list;
 523         GList *iter;
 524         message_port_callback_info_s *callback_info;
 525
 526         callback_info_list = g_hash_table_lookup(__callback_info_hash, GUINT_TO_POINTER(local_id));
 527         if (callback_info_list != NULL) {
 528                 for (iter = callback_info_list; iter != NULL; iter = iter->next) {
 529                         callback_info = (message_port_callback_info_s *)iter->data;
 530                         if (callback_info->local_info != NULL) {
 531                                 callback_info->local_info->callback = callback;
 532                                 callback_info->local_info->user_data = user_data;
 533                         }
 534                 }
 535         } else {
 536                 _LOGE("fail to find local_id %d ", local_id);
 537         }
 538 }
 539
 540 static bool __receive_message(GVariant *parameters, GDBusMethodInvocation *invocation)
 541 {
 542         char *local_port = NULL;
 543         char *local_appid = NULL;
 544         char *remote_appid = NULL;
 545         char *remote_port = NULL;
 546         gboolean local_trusted = false;
 547         gboolean remote_trusted = false;
 548         gboolean bi_dir = false;
 549         int len = 0;
 550
 551         bundle *data = NULL;
 552         bundle_raw *raw = NULL;
 553         message_port_local_port_info_s *mi;
 554         int local_reg_id = 0;
 555         message_port_callback_info_s *callback_info = NULL;
 556         callback_key_info_s *key_info;
 557
 558         char buf[1024];
 559         GDBusMessage *msg;
 560         GUnixFDList *fd_list;
 561         int fd_len;
 562         int *returned_fds = NULL;
 563         int fd;
 564         bool ret = false;
 565         char *key_appid;
 566
 567         g_variant_get(parameters, "(&s&sbb&s&sbu&s)", &local_appid, &local_port, &local_trusted, &bi_dir,
 568                         &remote_appid, &remote_port, &remote_trusted, &len, &raw);
 569
 570         if (!remote_port) {
 571                 _LOGE("Invalid argument : remote_port is NULL");
 572                 goto out;
 573         }
 574         if (!remote_appid) {
 575                 _LOGE("Invalid argument : remote_appid is NULL");
 576                 goto out;
 577         }
 578
 579         if (!local_appid) {
 580                 _LOGE("Invalid argument : local_appid");
 581                 goto out;
 582         }
 583
 584         message_port_lock_mutex();
 585         if (!is_local_port_registed(remote_port, remote_trusted, &local_reg_id, &mi)) {
 586                 _LOGE("Invalid argument : remote_port:(%s) trusted(%d)", remote_port, remote_trusted);
 587                 message_port_unlock_mutex();
 588                 goto out;
 589         }
 590
 591         callback_info = __create_callback_info(mi, local_appid);
 592         if (callback_info == NULL) {
 593                 message_port_unlock_mutex();
 594                 goto out;
 595         }
 596         message_port_unlock_mutex();
 597
 598         if (!local_port) {
 599                 _LOGE("Invalid argument : local_port");
 600                 goto out;
 601         }
 602         if (strcmp(remote_appid, app_id) != 0) {
 603                 _LOGE("Invalid argument : remote_appid (%s)", remote_appid);
 604                 goto out;
 605         }
 606         if (strcmp(remote_port, callback_info->local_info->port_name) != 0) {
 607                 _LOGE("Invalid argument : remote_port (%s)", remote_port);
 608                 goto out;
 609         }
 610         if (!len) {
 611                 _LOGE("Invalid argument : data_len");
 612                 goto out;
 613         }
 614         if (remote_trusted) {
 615                 if (g_hash_table_lookup(__trusted_app_list_hash, (gpointer)local_appid) == NULL) {
 616                         if (!is_preloaded(local_appid, remote_appid)) {
 617                                 int ret = check_certificate(local_appid, remote_appid);
 618                                 if (ret == MESSAGE_PORT_ERROR_NONE) {
 619                                         key_appid = strdup(local_appid);
 620                                         if (key_appid)
 621                                                 g_hash_table_insert(__trusted_app_list_hash, key_appid, "TRUE");
 622                                 } else {
 623                                         _LOGE("The application (%s) is not signed with the same certificate",
 624                                                         local_appid);
 625                                         goto out;
 626                                 }
 627                         }
 628                 }
 629         }
 630
 631         data = bundle_decode(raw, len);
 632         if (!data) {
 633                 _LOGE("Invalid argument : message");
 634                 goto out;
 635         }
 636
 637         LOGD("call calback %s", local_appid);
 638         if (bi_dir)
 639                 callback_info->local_info->callback(callback_info->local_info->local_id,
 640                         local_appid, local_port, local_trusted, data, callback_info->local_info->user_data);
 641         else
 642                 callback_info->local_info->callback(callback_info->local_info->local_id,
 643                         local_appid, NULL, false, data, callback_info->local_info->user_data);
 644         bundle_free(data);
 645
 646         ret = true;
 647
 648         msg = g_dbus_method_invocation_get_message(invocation);
 649         fd_list = g_dbus_message_get_unix_fd_list(msg);
 650
 651         /* When application send message to self fd_list is NULL */
 652         if (fd_list != NULL) {
 653                 returned_fds = g_unix_fd_list_steal_fds(fd_list, &fd_len);
 654                 if (returned_fds == NULL) {
 655                         _LOGE("fail to get fds");
 656                         ret = false;
 657                         goto out;
 658                 }
 659                 fd = returned_fds[0];
 660
 661                 LOGI("g_unix_fd_list_get %d fd: [%d]", fd_len, fd);
 662                 if (fd > 0) {
 663                         callback_info->gio_read = g_io_channel_unix_new(fd);
 664                         if (!callback_info->gio_read) {
 665                                 _LOGE("Error is %s\n", strerror_r(errno, buf, sizeof(buf)));
 666                                 ret = false;
 667                                 goto out;
 668                         }
 669
 670                         key_info = __create_callback_key_info(callback_info);
 671                         if (key_info == NULL) {
 672                                 _LOGE("out of memory");
 673                                 ret = false;
 674                                 goto out;
 675                         }
 676
 677                         callback_info->g_src_id = g_io_add_watch_full(
 678                                         callback_info->gio_read,
 679                                         G_PRIORITY_DEFAULT,
 680                                         G_IO_IN | G_IO_HUP,
 681                                         __socket_request_handler,
 682                                         (gpointer)key_info,
 683                                         __socket_destroy_handler);
 684                         if (callback_info->g_src_id == 0) {
 685                                 _LOGE("fail to add watch on socket");
 686                                 free(key_info);
 687                                 ret = false;
 688                                 goto out;
 689                         }
 690
 691                         message_port_lock_mutex();
 692                         if (__callback_info_append(callback_info) == false) {
 693                                 _LOGE("fail to append callback_info");
 694                                 ret = false;
 695                         }
 696                         message_port_unlock_mutex();
 697                 }
 698         }
 699
 700 out:
 701         if (ret == false)
 702                 __callback_info_free(callback_info);
 703
 704         if (returned_fds)
 705                 free(returned_fds);
 706
 707         return ret;
 708 }
 709
 710 static void __on_sender_name_appeared(GDBusConnection *connection,
 711                 const gchar     *name,
 712                 const gchar     *name_owner,
 713                 gpointer         user_data)
 714 {
 715         _LOGI("sender name appeared : %s", name);
 716 }
 717
 718 static void __on_sender_name_vanished(GDBusConnection *connection,
 719                 const gchar     *name,
 720                 gpointer         user_data)
 721 {
 722         int *watcher_id = (int *)user_data;
 723         char *local_appid;
 724
 725         local_appid = (char *)g_hash_table_lookup(__sender_appid_hash, name);
 726         if (local_appid) {
 727                 g_hash_table_remove(__trusted_app_list_hash, (gpointer)local_appid);
 728                 g_hash_table_remove(__sender_appid_hash, (gpointer)name);
 729         }
 730
 731         if (watcher_id) {
 732                 if (*watcher_id > 0)
 733                         g_bus_unwatch_name(*watcher_id);
 734                 else
 735                         LOGE("Invalid watcher_id %d", *watcher_id);
 736                 free(watcher_id);
 737         } else {
 738                 LOGE("watcher_id is NULL");
 739         }
 740 }
 741
 742 static bool __check_sender_validation(GVariant *parameters, const char *sender, GDBusConnection *conn)
 743 {
 744         int ret = 0;
 745         char buffer[MAX_PACKAGE_STR_SIZE] = {0, };
 746         char *local_appid = NULL;
 747         int pid = __get_sender_pid(conn, sender);
 748         int *watcher_id = (int *)calloc(1, sizeof(int));
 749         char *_sender;
 750         char *_appid;
 751         retvm_if(!watcher_id, false, "Malloc failed");
 752
 753         ret = aul_app_get_appid_bypid(pid, buffer, sizeof(buffer));
 754         if (ret != AUL_R_OK) {
 755                 _LOGE("Failed to get the sender ID: (%s) (%d)", sender, pid);
 756                 free(watcher_id);
 757                 return false;
 758         }
 759
 760         g_variant_get_child(parameters, 0, "&s", &local_appid);
 761         if (local_appid == NULL) {
 762                 _LOGE("appid is NULL : (%s) (%d)", sender, pid);
 763                 free(watcher_id);
 764                 return false;
 765         }
 766
 767         if (strncmp(buffer, local_appid, MAX_PACKAGE_STR_SIZE) == 0) {
 768                 _LOGD("insert sender !!!!! %s", sender);
 769                 _sender = strdup(sender);
 770                 if (_sender == NULL) {
 771                         _LOGE("out of memory");
 772                         free(watcher_id);
 773                         return false;
 774                 }
 775
 776                 _appid = strdup(local_appid);
 777                 if (_appid == NULL) {
 778                         _LOGE("out of memory");
 779                         free(watcher_id);
 780                         free(_sender);
 781                         return false;
 782                 }
 783
 784                 g_hash_table_insert(__sender_appid_hash, (gpointer)_sender, (gpointer)_appid);
 785                 *watcher_id = g_bus_watch_name_on_connection(
 786                                         gdbus_conn,
 787                                         sender,
 788                                         G_BUS_NAME_WATCHER_FLAGS_NONE,
 789                                         __on_sender_name_appeared,
 790                                         __on_sender_name_vanished,
 791                                         watcher_id,
 792                                         NULL);
 793         } else {
 794                 free(watcher_id);
 795                 return false;
 796         }
 797         return true;
 798 }
 799
 800 static void __dbus_method_call_handler(GDBusConnection *conn,
 801                                 const gchar *sender, const gchar *object_path,
 802                                 const gchar *iface_name, const gchar *method_name,
 803                                 GVariant *parameters, GDBusMethodInvocation *invocation,
 804                                 gpointer user_data)
 805 {
 806         _LOGI("method_name: %s, sender: %s", method_name, sender);
 807         gpointer sender_appid = g_hash_table_lookup(__sender_appid_hash, sender);
 808         if (sender_appid == NULL) {
 809                 if (!__check_sender_validation(parameters, sender, conn))
 810                         goto out;
 811         }
 812         if (g_strcmp0(method_name, "send_message") == 0)
 813                 __receive_message(parameters, invocation);
 814 out:
 815         g_dbus_method_invocation_return_value(invocation, NULL);
 816 }
 817
 818 static const GDBusInterfaceVTable interface_vtable = {
 819         __dbus_method_call_handler,
 820         NULL,
 821         NULL
 822 };
 823
 824 static int __register_dbus_interface(const char *port_name, bool is_trusted)
 825 {
 826
 827         GDBusNodeInfo *introspection_data = NULL;
 828         int registration_id = 0;
 829
 830         static gchar introspection_prefix[] =
 831                 "<node>"
 832                 "  <interface name='";
 833
 834         static gchar introspection_postfix[] =
 835                 "'>"
 836                 "        <method name='send_message'>"
 837                 "          <arg type='s' name='local_appid' direction='in'/>"
 838                 "          <arg type='s' name='local_port' direction='in'/>"
 839                 "          <arg type='b' name='local_trusted' direction='in'/>"
 840                 "          <arg type='b' name='bi_dir' direction='in'/>"
 841                 "          <arg type='s' name='remote_appid' direction='in'/>"
 842                 "          <arg type='s' name='remote_port' direction='in'/>"
 843                 "          <arg type='b' name='remote_trusted' direction='in'/>"
 844                 "          <arg type='u' name='data_len' direction='in'/>"
 845                 "          <arg type='s' name='data' direction='in'/>"
 846                 "        </method>"
 847                 "  </interface>"
 848                 "</node>";
 849
 850         char *introspection_xml = NULL;
 851         int introspection_xml_len = 0;
 852
 853
 854         int owner_id = 0;
 855         GError *error = NULL;
 856         char *bus_name = NULL;
 857         char *interface_name = NULL;
 858         GVariant *result = NULL;
 859
 860         bus_name = get_encoded_name(app_id, port_name, is_trusted);
 861         if (!bus_name) {
 862                 _LOGE("Fail to get bus name");
 863                 goto out;
 864         }
 865         interface_name = bus_name;
 866
 867         introspection_xml_len = strlen(introspection_prefix) + strlen(interface_name) +
 868                 strlen(introspection_postfix) + 1;
 869
 870         introspection_xml = (char *)calloc(introspection_xml_len, sizeof(char));
 871         if (!introspection_xml) {
 872                 _LOGE("out of memory");
 873                 goto out;
 874         }
 875
 876
 877         result = g_dbus_connection_call_sync(
 878                         gdbus_conn,
 879                         DBUS_SERVICE_DBUS,
 880                         DBUS_PATH_DBUS,
 881                         DBUS_INTERFACE_DBUS,
 882                         "RequestName",
 883                         g_variant_new("(su)", bus_name, G_BUS_NAME_OWNER_FLAGS_NONE),
 884                         G_VARIANT_TYPE("(u)"),
 885                         G_DBUS_CALL_FLAGS_NONE,
 886                         -1,
 887                         NULL,
 888                         &error);
 889         if (error) {
 890                 _LOGE("RequestName fail : %s", error->message);
 891                 g_error_free(error);
 892                 goto out;
 893         }
 894         if (result == NULL) {
 895                 _LOGE("fail to get name NULL");
 896                 goto out;
 897         }
 898         g_variant_get(result, "(u)", &owner_id);
 899         if (owner_id == 0) {
 900                 _LOGE("Acquiring the own name is failed");
 901                 goto out;
 902         }
 903
 904         _LOGD("Acquiring the own name : %d", owner_id);
 905
 906         snprintf(introspection_xml, introspection_xml_len, "%s%s%s", introspection_prefix, interface_name, introspection_postfix);
 907
 908         introspection_data = g_dbus_node_info_new_for_xml(introspection_xml, NULL);
 909         if (!introspection_data) {
 910                 _LOGE("g_dbus_node_info_new_for_xml() is failed.");
 911                 goto out;
 912         }
 913
 914         registration_id = g_dbus_connection_register_object(gdbus_conn,
 915                                                 MESSAGEPORT_OBJECT_PATH, introspection_data->interfaces[0],
 916                                                 &interface_vtable, NULL, NULL, NULL);
 917
 918         _LOGD("registration_id %d", registration_id);
 919
 920         if (registration_id == 0) {
 921                 _LOGE("Failed to g_dbus_connection_register_object");
 922                 goto out;
 923         }
 924
 925 out:
 926         if (introspection_data)
 927                 g_dbus_node_info_unref(introspection_data);
 928         if (introspection_xml)
 929                 free(introspection_xml);
 930         if (bus_name)
 931                 free(bus_name);
 932         if (result)
 933                 g_variant_unref(result);
 934
 935
 936         return registration_id;
 937 }
 938
 939 static bool __message_port_register_port(const int local_id, const char *local_port, bool is_trusted, message_port_message_cb callback, void *user_data)
 940 {
 941         message_port_local_port_info_s *mi = (message_port_local_port_info_s *)calloc(1, sizeof(message_port_local_port_info_s));
 942         retvm_if(!mi, false, "Malloc failed");
 943
 944         mi->callback = callback;
 945         mi->is_trusted = is_trusted;
 946         mi->port_name = strdup(local_port);
 947         if (mi->port_name == NULL) {
 948                 _LOGE("Malloc failed (%s)", local_port);
 949                 free(mi);
 950                 return false;
 951         }
 952         mi->local_id = local_id;
 953         mi->user_data = user_data;
 954
 955         g_hash_table_insert(__local_port_info, GINT_TO_POINTER(mi->local_id), mi);
 956         return true;
 957 }
 958
 959 int get_local_port_info(int id, message_port_local_port_info_s **info)
 960 {
 961         message_port_local_port_info_s *mi = (message_port_local_port_info_s *)g_hash_table_lookup(__local_port_info, GINT_TO_POINTER(id));
 962
 963         if (mi == NULL)
 964                 return MESSAGE_PORT_ERROR_PORT_NOT_FOUND;
 965         *info = mi;
 966
 967         return MESSAGE_PORT_ERROR_NONE;
 968 }
 969
 970 int register_message_port(const char *local_port, bool is_trusted, message_port_message_cb callback, void *user_data)
 971 {
 972         _SECURE_LOGI("local_port : [%s:%s]", local_port, is_trusted ? "trusted" : "non-trusted");
 973
 974         int local_id = 0;
 975         message_port_local_port_info_s *port_info;
 976         if (!_initialized) {
 977                 if (!__initialize())
 978                         return MESSAGE_PORT_ERROR_IO_ERROR;
 979         }
 980
 981         /* Check the message port is already registed */
 982         if (is_local_port_registed(local_port, is_trusted, &local_id, &port_info)) {
 983                 port_info->callback = callback;
 984                 port_info->user_data = user_data;
 985                 __callback_info_update_user_data(local_id, callback, user_data);
 986                 return local_id;
 987         }
 988
 989         local_id = __register_dbus_interface(local_port, is_trusted);
 990         if (local_id < 1) {
 991                 _LOGE("register_dbus_interface fail !!");
 992                 return MESSAGE_PORT_ERROR_OUT_OF_MEMORY;
 993         }
 994
 995         if (!__message_port_register_port(local_id, local_port, is_trusted, callback, user_data))
 996                 return MESSAGE_PORT_ERROR_OUT_OF_MEMORY;
 997
 998         return local_id;
 999 }
1000
1001 int unregister_local_port(int local_port_id, bool trusted_port)
1002 {
1003
1004         GVariant *result;
1005         char *bus_name = NULL;
1006         GError *err = NULL;
1007         int ret = 0;
1008         message_port_local_port_info_s *mi;
1009
1010         _LOGI("unregister : %d", local_port_id);
1011
1012         if (!_initialized) {
1013                 if (!__initialize())
1014                         return MESSAGE_PORT_ERROR_IO_ERROR;
1015         }
1016
1017         mi = (message_port_local_port_info_s *)
1018                 g_hash_table_lookup(__local_port_info, GINT_TO_POINTER(local_port_id));
1019         if (mi == NULL)
1020                 return MESSAGE_PORT_ERROR_PORT_NOT_FOUND;
1021
1022         if (mi->is_trusted != trusted_port)
1023                 return MESSAGE_PORT_ERROR_INVALID_PARAMETER;
1024
1025         g_hash_table_remove(__callback_info_hash, GUINT_TO_POINTER(local_port_id));
1026
1027         bus_name = get_encoded_name(app_id, mi->port_name, mi->is_trusted);
1028         if (bus_name == NULL)
1029                 return MESSAGE_PORT_ERROR_OUT_OF_MEMORY;
1030
1031         g_dbus_connection_unregister_object(gdbus_conn, local_port_id);
1032
1033         result = g_dbus_connection_call_sync(
1034                         gdbus_conn,
1035                         DBUS_SERVICE_DBUS,
1036                         DBUS_PATH_DBUS,
1037                         DBUS_INTERFACE_DBUS,
1038                         "ReleaseName",
1039                         g_variant_new("(s)", bus_name),
1040                         G_VARIANT_TYPE("(u)"),
1041                         G_DBUS_CALL_FLAGS_NONE,
1042                         -1,
1043                         NULL,
1044                         &err);
1045
1046         if (bus_name)
1047                 free(bus_name);
1048
1049         if (err) {
1050                 _LOGE("RequestName fail : %s", err->message);
1051                 g_error_free(err);
1052                 return MESSAGE_PORT_ERROR_PORT_NOT_FOUND;
1053         }
1054         g_variant_get(result, "(u)", &ret);
1055
1056         if (result)
1057                 g_variant_unref(result);
1058
1059         if (ret != DBUS_RELEASE_NAME_REPLY_RELEASED) {
1060
1061                 if (ret == DBUS_RELEASE_NAME_REPLY_NON_EXISTENT) {
1062                         _LOGE("Port Not exist");
1063                         return MESSAGE_PORT_ERROR_PORT_NOT_FOUND;
1064                 } else if (ret == DBUS_RELEASE_NAME_REPLY_NOT_OWNER) {
1065                         _LOGE("Try to release not owned name. MESSAGE_PORT_ERROR_INVALID_PARAMETER");
1066                         return MESSAGE_PORT_ERROR_INVALID_PARAMETER;
1067                 }
1068         }
1069         g_hash_table_remove(__local_port_info, GINT_TO_POINTER(local_port_id));
1070
1071         return MESSAGE_PORT_ERROR_NONE;
1072 }