client/ClientChannel.cpp

   1 /*
   2  * Copyright (c) 2012, 2013 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 /* standard library header */
  18 #include <stdlib.h>
  19 #include <unistd.h>
  20 #include <string.h>
  21 #ifdef USE_GDBUS
  22 #include <glib.h>
  23 #endif
  24
  25 /* SLP library header */
  26
  27 /* local header */
  28 #include "Debug.h"
  29 #include "ClientChannel.h"
  30 #include "ReaderHelper.h"
  31 #include "APDUHelper.h"
  32 #ifdef USE_GDBUS
  33 #include "ClientGDBus.h"
  34 #else
  35 #include "Message.h"
  36 #include "ClientIPC.h"
  37 #endif
  38
  39 #ifndef EXTERN_API
  40 #define EXTERN_API __attribute__((visibility("default")))
  41 #endif
  42
  43 namespace smartcard_service_api
  44 {
  45         ClientChannel::ClientChannel(void *context, Session *session,
  46                 int channelNum, const ByteArray &selectResponse, void *handle)
  47                 : Channel(session)
  48         {
  49                 this->channelNum = -1;
  50                 this->handle = NULL;
  51                 this->context = NULL;
  52
  53                 if (handle == NULL)
  54                 {
  55                         _ERR("ClientIPC::getInstance() failed");
  56
  57                         return;
  58                 }
  59
  60                 this->channelNum = channelNum;
  61                 this->handle = handle;
  62                 this->selectResponse = selectResponse;
  63                 this->context = context;
  64 #ifdef USE_GDBUS
  65                 /* initialize client */
  66                 if (!g_thread_supported())
  67                 {
  68                         g_thread_init(NULL);
  69                 }
  70
  71                 g_type_init();
  72
  73                 /* init default context */
  74                 GError *error = NULL;
  75
  76                 proxy = smartcard_service_channel_proxy_new_for_bus_sync(
  77                         G_BUS_TYPE_SYSTEM, G_DBUS_PROXY_FLAGS_NONE,
  78                         "org.tizen.SmartcardService",
  79                         "/org/tizen/SmartcardService/Channel",
  80                         NULL, &error);
  81                 if (proxy == NULL)
  82                 {
  83                         _ERR("Can not create proxy : %s", error->message);
  84                         g_error_free(error);
  85                         return;
  86                 }
  87 #endif
  88         }
  89
  90         ClientChannel::~ClientChannel()
  91         {
  92                 closeSync();
  93         }
  94
  95 #ifdef USE_GDBUS
  96         void ClientChannel::channel_transmit_cb(GObject *source_object,
  97                 GAsyncResult *res, gpointer user_data)
  98         {
  99                 CallbackParam *param = (CallbackParam *)user_data;
 100                 transmitCallback callback;
 101                 gint result;
 102                 GVariant *var_response;
 103                 GError *error = NULL;
 104                 ByteArray response;
 105
 106                 _INFO("MSG_REQUEST_TRANSMIT");
 107
 108                 if (param == NULL) {
 109                         _ERR("null parameter!!!");
 110                         return;
 111                 }
 112
 113                 callback = (transmitCallback)param->callback;
 114
 115                 if (smartcard_service_channel_call_transmit_finish(
 116                         SMARTCARD_SERVICE_CHANNEL(source_object),
 117                         &result, &var_response, res, &error) == true) {
 118                         if (result == SCARD_ERROR_OK) {
 119                                 GDBusHelper::convertVariantToByteArray(var_response, response);
 120                         } else {
 121                                 _ERR("smartcard_service_channel_call_transmit failed, [%d]", result);
 122                         }
 123                 } else {
 124                         _ERR("smartcard_service_channel_call_transmit failed, [%s]", error->message);
 125                         g_error_free(error);
 126
 127                         result = SCARD_ERROR_IPC_FAILED;
 128                 }
 129
 130                 if (callback != NULL) {
 131                         callback(response.getBuffer(),
 132                                 response.size(),
 133                                 result, param->user_param);
 134                 }
 135
 136                 delete param;
 137         }
 138
 139         void ClientChannel::channel_close_cb(GObject *source_object,
 140                 GAsyncResult *res, gpointer user_data)
 141         {
 142                 CallbackParam *param = (CallbackParam *)user_data;
 143                 ClientChannel *channel;
 144                 closeChannelCallback callback;
 145                 gint result;
 146                 GError *error = NULL;
 147
 148                 _INFO("MSG_REQUEST_CLOSE_CHANNEL");
 149
 150                 if (param == NULL) {
 151                         _ERR("null parameter!!!");
 152                         return;
 153                 }
 154
 155                 channel = (ClientChannel *)param->instance;
 156                 callback = (closeChannelCallback)param->callback;
 157
 158                 if (smartcard_service_channel_call_close_channel_finish(
 159                         SMARTCARD_SERVICE_CHANNEL(source_object),
 160                         &result, res, &error) == true) {
 161                         if (result == SCARD_ERROR_OK) {
 162                                 channel->channelNum = -1;
 163                         } else {
 164                                 _ERR("smartcard_service_channel_call_close_channel failed, [%d]", result);
 165                         }
 166                 } else {
 167                         _ERR("smartcard_service_channel_call_close_channel failed, [%s]", error->message);
 168                         g_error_free(error);
 169
 170                         result = SCARD_ERROR_IPC_FAILED;
 171                 }
 172
 173                 if (callback != NULL) {
 174                         callback(result, param->user_param);
 175                 }
 176
 177                 delete param;
 178         }
 179 #endif
 180         void ClientChannel::closeSync()
 181                 throw(ExceptionBase &, ErrorIO &, ErrorSecurity &,
 182                         ErrorIllegalState &, ErrorIllegalParameter &)
 183         {
 184                 if (isClosed() == false)
 185                 {
 186                         if (getSession()->getReader()->isSecureElementPresent() == true)
 187                         {
 188 #ifdef USE_GDBUS
 189                                 gint ret;
 190                                 GError *error = NULL;
 191
 192                                 if (proxy == NULL) {
 193                                         _ERR("dbus proxy is not initialized yet");
 194                                         throw ErrorIllegalState(SCARD_ERROR_NOT_INITIALIZED);
 195                                 }
 196
 197                                 if (smartcard_service_channel_call_close_channel_sync(
 198                                         (SmartcardServiceChannel *)proxy,
 199                                         GPOINTER_TO_UINT(context),
 200                                         GPOINTER_TO_UINT(handle),
 201                                         &ret, NULL, &error) == true) {
 202                                         if (ret != SCARD_ERROR_OK) {
 203                                                 _ERR("smartcard_service_channel_call_close_channel_sync failed, [%d]", ret);
 204                                                 THROW_ERROR(ret);
 205                                         }
 206                                 } else {
 207                                         _ERR("smartcard_service_channel_call_close_channel_sync failed, [%s]", error->message);
 208                                         g_error_free(error);
 209
 210                                         throw ErrorIO(SCARD_ERROR_IPC_FAILED);
 211                                 }
 212 #else
 213                                 Message msg;
 214                                 int rv;
 215
 216 #ifdef CLIENT_IPC_THREAD
 217                                 /* send message to server */
 218                                 msg.message = Message::MSG_REQUEST_CLOSE_CHANNEL;
 219                                 msg.param1 = (unsigned long)handle;
 220                                 msg.error = (unsigned long)context; /* using error to context */
 221                                 msg.caller = (void *)this;
 222                                 msg.callback = (void *)this; /* if callback is class instance, it means synchronized call */
 223
 224                                 syncLock();
 225                                 if (ClientIPC::getInstance().sendMessage(msg) == true)
 226                                 {
 227                                         rv = waitTimedCondition(0);
 228                                         if (rv < 0)
 229                                         {
 230                                                 _ERR("timeout [%d]", rv);
 231                                                 this->error = SCARD_ERROR_OPERATION_TIMEOUT;
 232                                         }
 233                                 }
 234                                 else
 235                                 {
 236                                         _ERR("sendMessage failed");
 237                                         this->error = SCARD_ERROR_IPC_FAILED;
 238                                 }
 239                                 syncUnlock();
 240
 241                                 channelNum = -1;
 242
 243                                 if (this->error != SCARD_ERROR_OK)
 244                                 {
 245                                         ThrowError::throwError(this->error);
 246                                 }
 247 #endif
 248 #endif
 249                         }
 250                         else
 251                         {
 252                                 _INFO("unavailable channel");
 253                         }
 254                 }
 255         }
 256
 257         int ClientChannel::close(closeChannelCallback callback, void *userParam)
 258         {
 259                 int result = SCARD_ERROR_OK;
 260
 261                 if (isClosed() == false)
 262                 {
 263                         if (getSession()->getReader()->isSecureElementPresent() == true)
 264                         {
 265 #ifdef USE_GDBUS
 266                                 CallbackParam *param = new CallbackParam();
 267
 268                                 param->instance = this;
 269                                 param->callback = (void *)callback;
 270                                 param->user_param = userParam;
 271
 272                                 smartcard_service_channel_call_close_channel(
 273                                         (SmartcardServiceChannel *)proxy,
 274                                         GPOINTER_TO_UINT(context),
 275                                         GPOINTER_TO_UINT(handle), NULL,
 276                                         &ClientChannel::channel_close_cb, param);
 277 #else
 278                                 Message msg;
 279                                 channelNum = -1;
 280
 281                                 /* send message to server */
 282                                 msg.message = Message::MSG_REQUEST_CLOSE_CHANNEL;
 283                                 msg.param1 = (unsigned long)handle;
 284                                 msg.error = (unsigned long)context; /* using error to context */
 285                                 msg.caller = (void *)this;
 286                                 msg.callback = (void *)callback;
 287                                 msg.userParam = userParam;
 288
 289                                 if (ClientIPC::getInstance().sendMessage(msg) == false)
 290                                 {
 291                                         _ERR("sendMessage failed");
 292                                         result = SCARD_ERROR_IPC_FAILED;
 293                                 }
 294 #endif
 295                         }
 296                         else
 297                         {
 298                                 _ERR("unavailable channel");
 299                                 result = SCARD_ERROR_ILLEGAL_STATE;
 300                         }
 301                 }
 302
 303                 return result;
 304         }
 305
 306         int ClientChannel::transmitSync(const ByteArray &command, ByteArray &result)
 307                 throw(ExceptionBase &, ErrorIO &, ErrorIllegalState &,
 308                         ErrorIllegalParameter &, ErrorSecurity &)
 309         {
 310                 int rv = SCARD_ERROR_OK;
 311
 312                 if (getSession()->getReader()->isSecureElementPresent() == true)
 313                 {
 314 #ifdef USE_GDBUS
 315                         GVariant *var_command = NULL, *var_response = NULL;
 316                         GError *error = NULL;
 317
 318                         var_command = GDBusHelper::convertByteArrayToVariant(command);
 319
 320                         if (smartcard_service_channel_call_transmit_sync(
 321                                 (SmartcardServiceChannel *)proxy,
 322                                 GPOINTER_TO_UINT(context),
 323                                 GPOINTER_TO_UINT(handle),
 324                                 var_command, &rv, &var_response,
 325                                 NULL, &error) == true) {
 326
 327                                 if (rv == SCARD_ERROR_OK) {
 328                                         GDBusHelper::convertVariantToByteArray(var_response, result);
 329                                 } else {
 330                                         _ERR("smartcard_service_session_call_get_atr_sync failed, [%d]", rv);
 331                                         THROW_ERROR(rv);
 332                                 }
 333                         } else {
 334                                 _ERR("smartcard_service_session_call_get_atr_sync failed, [%s]", error->message);
 335                                 g_error_free(error);
 336
 337                                 throw ErrorIO(SCARD_ERROR_IPC_FAILED);
 338                         }
 339 #else
 340                         Message msg;
 341 #ifdef CLIENT_IPC_THREAD
 342                         /* send message to server */
 343                         msg.message = Message::MSG_REQUEST_TRANSMIT;
 344                         msg.param1 = (unsigned long)handle;
 345                         msg.param2 = 0;
 346                         msg.data = command;
 347                         msg.error = (unsigned long)context; /* using error to context */
 348                         msg.caller = (void *)this;
 349                         msg.callback = (void *)this; /* if callback is class instance, it means synchronized call */
 350
 351                         syncLock();
 352                         if (ClientIPC::getInstance().sendMessage(msg) == true)
 353                         {
 354                                 rv = waitTimedCondition(0);
 355                                 if (rv >= 0)
 356                                 {
 357                                         result = response;
 358                                         rv = SCARD_ERROR_OK;
 359                                 }
 360                                 else
 361                                 {
 362                                         _ERR("timeout [%d]", rv);
 363                                         this->error = SCARD_ERROR_OPERATION_TIMEOUT;
 364                                 }
 365                         }
 366                         else
 367                         {
 368                                 _ERR("sendMessage failed");
 369                         }
 370                         syncUnlock();
 371
 372                         if (this->error != SCARD_ERROR_OK)
 373                         {
 374                                 ThrowError::throwError(this->error);
 375                         }
 376 #endif
 377 #endif
 378                 }
 379                 else
 380                 {
 381                         _ERR("unavailable channel");
 382                         throw ErrorIllegalState(SCARD_ERROR_UNAVAILABLE);
 383                 }
 384
 385                 return rv;
 386         }
 387
 388         int ClientChannel::transmit(const ByteArray &command, transmitCallback callback, void *userParam)
 389         {
 390                 int result;
 391
 392                 if (getSession()->getReader()->isSecureElementPresent() == true)
 393                 {
 394 #ifdef USE_GDBUS
 395                         GVariant *var_command;
 396                         CallbackParam *param = new CallbackParam();
 397
 398                         param->instance = this;
 399                         param->callback = (void *)callback;
 400                         param->user_param = userParam;
 401
 402                         var_command = GDBusHelper::convertByteArrayToVariant(command);
 403
 404                         smartcard_service_channel_call_transmit(
 405                                 (SmartcardServiceChannel *)proxy,
 406                                 GPOINTER_TO_UINT(context),
 407                                 GPOINTER_TO_UINT(handle),
 408                                 var_command, NULL,
 409                                 &ClientChannel::channel_transmit_cb, param);
 410
 411                         result = SCARD_ERROR_OK;
 412 #else
 413                         Message msg;
 414
 415                         /* send message to server */
 416                         msg.message = Message::MSG_REQUEST_TRANSMIT;
 417                         msg.param1 = (unsigned long)handle;
 418                         msg.param2 = 0;
 419                         msg.data = command;
 420                         msg.error = (unsigned long)context; /* using error to context */
 421                         msg.caller = (void *)this;
 422                         msg.callback = (void *)callback;
 423                         msg.userParam = userParam;
 424
 425                         if (ClientIPC::getInstance().sendMessage(msg) == true)
 426                         {
 427                                 result = SCARD_ERROR_OK;
 428                         }
 429                         else
 430                         {
 431                                 _ERR("sendMessage failed");
 432                                 result = SCARD_ERROR_IPC_FAILED;
 433                         }
 434 #endif
 435                 }
 436                 else
 437                 {
 438                         _ERR("unavailable channel");
 439                         result = SCARD_ERROR_ILLEGAL_STATE;
 440                 }
 441
 442                 return result;
 443         }
 444
 445 #ifndef USE_GDBUS
 446         bool ClientChannel::dispatcherCallback(void *message)
 447         {
 448                 Message *msg = (Message *)message;
 449                 ClientChannel *channel = NULL;
 450                 bool result = false;
 451
 452                 if (msg == NULL)
 453                 {
 454                         _ERR("message is null");
 455                         return result;
 456                 }
 457
 458                 channel = (ClientChannel *)msg->caller;
 459
 460                 switch (msg->message)
 461                 {
 462                 case Message::MSG_REQUEST_TRANSMIT :
 463                         {
 464                                 /* transmit result */
 465                                 _INFO("MSG_REQUEST_TRANSMIT");
 466
 467                                 if (msg->isSynchronousCall() == true) /* synchronized call */
 468                                 {
 469                                         /* sync call */
 470                                         channel->syncLock();
 471
 472                                         /* copy result */
 473                                         channel->error = msg->error;
 474                                         channel->response = msg->data;
 475
 476                                         channel->signalCondition();
 477                                         channel->syncUnlock();
 478                                 }
 479                                 else if (msg->callback != NULL)
 480                                 {
 481                                         transmitCallback cb = (transmitCallback)msg->callback;
 482
 483                                         /* async call */
 484                                         cb(msg->data.getBuffer(),
 485                                                 msg->data.size(),
 486                                                 msg->error,
 487                                                 msg->userParam);
 488                                 }
 489                         }
 490                         break;
 491
 492                 case Message::MSG_REQUEST_CLOSE_CHANNEL :
 493                         {
 494                                 _INFO("MSG_REQUEST_CLOSE_CHANNEL");
 495
 496                                 if (msg->isSynchronousCall() == true) /* synchronized call */
 497                                 {
 498                                         /* sync call */
 499                                         channel->syncLock();
 500
 501                                         channel->error = msg->error;
 502
 503                                         channel->signalCondition();
 504                                         channel->syncUnlock();
 505                                 }
 506                                 else if (msg->callback != NULL)
 507                                 {
 508                                         closeChannelCallback cb = (closeChannelCallback)msg->callback;
 509
 510                                         /* async call */
 511                                         cb(msg->error, msg->userParam);
 512                                 }
 513                         }
 514                         break;
 515
 516                 default:
 517                         _DBG("Unknown message : %s", msg->toString().c_str());
 518                         break;
 519                 }
 520
 521                 delete msg;
 522
 523                 return result;
 524         }
 525 #endif /* USE_GDBUS */
 526 } /* namespace smartcard_service_api */
 527
 528 /* export C API */
 529 #define CHANNEL_EXTERN_BEGIN \
 530         if (handle != NULL) \
 531         { \
 532                 ClientChannel *channel = (ClientChannel *)handle;
 533
 534 #define CHANNEL_EXTERN_END \
 535         } \
 536         else \
 537         { \
 538                 _ERR("Invalid param"); \
 539         }
 540
 541 using namespace smartcard_service_api;
 542
 543 EXTERN_API int channel_close(channel_h handle, channel_close_cb callback, void *userParam)
 544 {
 545         int result = -1;
 546
 547         CHANNEL_EXTERN_BEGIN;
 548         result = channel->close((closeChannelCallback)callback, userParam);
 549         CHANNEL_EXTERN_END;
 550
 551         return result;
 552 }
 553
 554 EXTERN_API int channel_transmit(channel_h handle, unsigned char *command,
 555         unsigned int length, channel_transmit_cb callback, void *userParam)
 556 {
 557         int result = -1;
 558
 559         CHANNEL_EXTERN_BEGIN;
 560         ByteArray temp;
 561
 562         temp.assign(command, length);
 563         result = channel->transmit(temp, (transmitCallback)callback, userParam);
 564         CHANNEL_EXTERN_END;
 565
 566         return result;
 567 }
 568
 569 EXTERN_API void channel_close_sync(channel_h handle)
 570 {
 571 #ifdef CLIENT_IPC_THREAD
 572         CHANNEL_EXTERN_BEGIN;
 573         try
 574         {
 575                 channel->closeSync();
 576         }
 577         catch (...)
 578         {
 579         }
 580         CHANNEL_EXTERN_END;
 581 #endif
 582 }
 583
 584 EXTERN_API int channel_transmit_sync(channel_h handle, unsigned char *command,
 585         unsigned int cmd_len, unsigned char **response, unsigned int *resp_len)
 586 {
 587         int result = -1;
 588
 589 #ifdef CLIENT_IPC_THREAD
 590         if (command == NULL || cmd_len == 0 || response == NULL || resp_len == NULL)
 591                 return result;
 592
 593         CHANNEL_EXTERN_BEGIN;
 594         ByteArray temp, resp;
 595
 596         temp.assign(command, cmd_len);
 597
 598         try
 599         {
 600                 result = channel->transmitSync(temp, resp);
 601                 if (resp.size() > 0)
 602                 {
 603                         *resp_len = resp.size();
 604                         *response = (unsigned char *)calloc(1, *resp_len);
 605                         memcpy(*response, resp.getBuffer(), *resp_len);
 606                 }
 607         }
 608         catch (...)
 609         {
 610                 result = -1;
 611         }
 612         CHANNEL_EXTERN_END;
 613 #endif
 614
 615         return result;
 616 }
 617
 618 EXTERN_API bool channel_is_basic_channel(channel_h handle)
 619 {
 620         bool result = false;
 621
 622         CHANNEL_EXTERN_BEGIN;
 623         result = channel->isBasicChannel();
 624         CHANNEL_EXTERN_END;
 625
 626         return result;
 627 }
 628
 629 EXTERN_API bool channel_is_closed(channel_h handle)
 630 {
 631         bool result = false;
 632
 633         CHANNEL_EXTERN_BEGIN;
 634         result = channel->isClosed();
 635         CHANNEL_EXTERN_END;
 636
 637         return result;
 638 }
 639
 640 EXTERN_API unsigned int channel_get_select_response_length(channel_h handle)
 641 {
 642         unsigned int result = 0;
 643
 644         CHANNEL_EXTERN_BEGIN;
 645         result = channel->getSelectResponse().size();
 646         CHANNEL_EXTERN_END;
 647
 648         return result;
 649 }
 650
 651 EXTERN_API bool channel_get_select_response(channel_h handle,
 652         unsigned char *buffer, unsigned int length)
 653 {
 654         bool result = false;
 655
 656         if (buffer == NULL || length == 0)
 657         {
 658                 return result;
 659         }
 660
 661         CHANNEL_EXTERN_BEGIN;
 662         ByteArray response;
 663
 664         response = channel->getSelectResponse();
 665         if (response.size() > 0)
 666         {
 667                 memcpy(buffer, response.getBuffer(), MIN(length, response.size()));
 668                 result = true;
 669         }
 670         CHANNEL_EXTERN_END;
 671
 672         return result;
 673 }
 674
 675 EXTERN_API session_h channel_get_session(channel_h handle)
 676 {
 677         session_h session = NULL;
 678
 679         CHANNEL_EXTERN_BEGIN;
 680         session = channel->getSession();
 681         CHANNEL_EXTERN_END;
 682
 683         return session;
 684 }
 685
 686 EXTERN_API void channel_destroy_instance(channel_h handle)
 687 {
 688         /* do nothing */
 689 }