libfreerdp-core/gcc.c

   1 /**
   2  * FreeRDP: A Remote Desktop Protocol Client
   3  * T.124 Generic Conference Control (GCC)
   4  *
   5  * Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>
   6  *
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *     http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  */
  19
  20 #include "gcc.h"
  21
  22 /**
  23  * T.124 GCC is defined in:
  24  *
  25  * http://www.itu.int/rec/T-REC-T.124-199802-S/en
  26  * ITU-T T.124 (02/98): Generic Conference Control
  27  */
  28
  29 /**
  30  * ConnectData ::= SEQUENCE
  31  * {
  32  *      t124Identifier  Key,
  33  *      connectPDU      OCTET_STRING
  34  * }
  35  *
  36  * Key ::= CHOICE
  37  * {
  38  *      object                          OBJECT_IDENTIFIER,
  39  *      h221NonStandard                 H221NonStandardIdentifier
  40  * }
  41  *
  42  * ConnectGCCPDU ::= CHOICE
  43  * {
  44  *      conferenceCreateRequest         ConferenceCreateRequest,
  45  *      conferenceCreateResponse        ConferenceCreateResponse,
  46  *      conferenceQueryRequest          ConferenceQueryRequest,
  47  *      conferenceQueryResponse         ConferenceQueryResponse,
  48  *      conferenceJoinRequest           ConferenceJoinRequest,
  49  *      conferenceJoinResponse          ConferenceJoinResponse,
  50  *      conferenceInviteRequest         ConferenceInviteRequest,
  51  *      conferenceInviteResponse        ConferenceInviteResponse,
  52  *      ...
  53  * }
  54  *
  55  * ConferenceCreateRequest ::= SEQUENCE
  56  * {
  57  *      conferenceName                  ConferenceName,
  58  *      convenerPassword                Password OPTIONAL,
  59  *      password                        Password OPTIONAL,
  60  *      lockedConference                BOOLEAN,
  61  *      listedConference                BOOLEAN,
  62  *      conductibleConference           BOOLEAN,
  63  *      terminationMethod               TerminationMethod,
  64  *      conductorPrivileges             SET OF Privilege OPTIONAL,
  65  *      conductedPrivileges             SET OF Privilege OPTIONAL,
  66  *      nonConductedPrivileges          SET OF Privilege OPTIONAL,
  67  *      conferenceDescription           TextString OPTIONAL,
  68  *      callerIdentifier                TextString OPTIONAL,
  69  *      userData                        UserData OPTIONAL,
  70  *      ...,
  71  *      conferencePriority              ConferencePriority OPTIONAL,
  72  *      conferenceMode                  ConferenceMode OPTIONAL
  73  * }
  74  *
  75  * ConferenceCreateResponse ::= SEQUENCE
  76  * {
  77  *      nodeID                          UserID,
  78  *      tag                             INTEGER,
  79  *      result                          ENUMERATED
  80  *      {
  81  *              success                         (0),
  82  *              userRejected                    (1),
  83  *              resourcesNotAvailable           (2),
  84  *              rejectedForSymmetryBreaking     (3),
  85  *              lockedConferenceNotSupported    (4)
  86  *      },
  87  *      userData                        UserData OPTIONAL,
  88  *      ...
  89  * }
  90  *
  91  * ConferenceName ::= SEQUENCE
  92  * {
  93  *      numeric                         SimpleNumericString
  94  *      text                            SimpleTextString OPTIONAL,
  95  *      ...
  96  * }
  97  *
  98  * SimpleNumericString ::= NumericString (SIZE (1..255)) (FROM ("0123456789"))
  99  *
 100  * UserData ::= SET OF SEQUENCE
 101  * {
 102  *      key                             Key,
 103  *      value                           OCTET_STRING OPTIONAL
 104  * }
 105  *
 106  * H221NonStandardIdentifier ::= OCTET STRING (SIZE (4..255))
 107  *
 108  * UserID ::= DynamicChannelID
 109  *
 110  * ChannelID ::= INTEGER (1..65535)
 111  * StaticChannelID ::= INTEGER (1..1000)
 112  * DynamicChannelID ::= INTEGER (1001..65535)
 113  *
 114  */
 115
 116 /*
 117  * OID = 0.0.20.124.0.1
 118  * { itu-t(0) recommendation(0) t(20) t124(124) version(0) 1 }
 119  * v.1 of ITU-T Recommendation T.124 (Feb 1998): "Generic Conference Control"
 120  */
 121 uint8 t124_02_98_oid[6] = { 0, 0, 20, 124, 0, 1 };
 122
 123 uint8 h221_cs_key[4] = "Duca";
 124 uint8 h221_sc_key[4] = "McDn";
 125
 126 /**
 127  * Read a GCC Conference Create Request.\n
 128  * @msdn{cc240836}
 129  * @param s stream
 130  * @param settings rdp settings
 131  */
 132
 133 boolean gcc_read_conference_create_request(STREAM* s, rdpSettings* settings)
 134 {
 135         uint16 length;
 136         uint8 choice;
 137         uint8 number;
 138         uint8 selection;
 139
 140         /* ConnectData */
 141         if (!per_read_choice(s, &choice))
 142                 return False;
 143         if (!per_read_object_identifier(s, t124_02_98_oid))
 144                 return False;
 145
 146         /* ConnectData::connectPDU (OCTET_STRING) */
 147         if (!per_read_length(s, &length))
 148                 return False;
 149
 150         /* ConnectGCCPDU */
 151         if (!per_read_choice(s, &choice))
 152                 return False;
 153         if (!per_read_selection(s, &selection))
 154                 return False;
 155
 156         /* ConferenceCreateRequest::conferenceName */
 157         if (!per_read_numeric_string(s, 1)) /* ConferenceName::numeric */
 158                 return False;
 159         if (!per_read_padding(s, 1)) /* padding */
 160                 return False;
 161
 162         /* UserData (SET OF SEQUENCE) */
 163         if (!per_read_number_of_sets(s, &number) || number != 1) /* one set of UserData */
 164                 return False;
 165         if (!per_read_choice(s, &choice) || choice != 0xC0) /* UserData::value present + select h221NonStandard (1) */
 166                 return False;
 167
 168         /* h221NonStandard */
 169         if (!per_read_octet_string(s, h221_cs_key, 4, 4)) /* h221NonStandard, client-to-server H.221 key, "Duca" */
 170                 return False;
 171
 172         /* userData::value (OCTET_STRING) */
 173         if (!per_read_length(s, &length))
 174                 return False;
 175         if (stream_get_left(s) < length)
 176                 return False;
 177         if (!gcc_read_client_data_blocks(s, settings, length))
 178                 return False;
 179
 180         return True;
 181 }
 182
 183 /**
 184  * Write a GCC Conference Create Request.\n
 185  * @msdn{cc240836}
 186  * @param s stream
 187  * @param user_data client data blocks
 188  */
 189
 190 void gcc_write_conference_create_request(STREAM* s, STREAM* user_data)
 191 {
 192         /* ConnectData */
 193         per_write_choice(s, 0); /* From Key select object (0) of type OBJECT_IDENTIFIER */
 194         per_write_object_identifier(s, t124_02_98_oid); /* ITU-T T.124 (02/98) OBJECT_IDENTIFIER */
 195
 196         /* ConnectData::connectPDU (OCTET_STRING) */
 197         per_write_length(s, stream_get_length(user_data) + 14); /* connectPDU length */
 198
 199         /* ConnectGCCPDU */
 200         per_write_choice(s, 0); /* From ConnectGCCPDU select conferenceCreateRequest (0) of type ConferenceCreateRequest */
 201         per_write_selection(s, 0x08); /* select optional userData from ConferenceCreateRequest */
 202
 203         /* ConferenceCreateRequest::conferenceName */
 204         per_write_numeric_string(s, (uint8*)"1", 1, 1); /* ConferenceName::numeric */
 205         per_write_padding(s, 1); /* padding */
 206
 207         /* UserData (SET OF SEQUENCE) */
 208         per_write_number_of_sets(s, 1); /* one set of UserData */
 209         per_write_choice(s, 0xC0); /* UserData::value present + select h221NonStandard (1) */
 210
 211         /* h221NonStandard */
 212         per_write_octet_string(s, h221_cs_key, 4, 4); /* h221NonStandard, client-to-server H.221 key, "Duca" */
 213
 214         /* userData::value (OCTET_STRING) */
 215         per_write_octet_string(s, user_data->data, stream_get_length(user_data), 0); /* array of client data blocks */
 216 }
 217
 218 void gcc_read_conference_create_response(STREAM* s, rdpSettings* settings)
 219 {
 220         uint16 length;
 221         uint32 tag;
 222         uint16 nodeID;
 223         uint8 result;
 224         uint8 choice;
 225         uint8 number;
 226
 227         /* ConnectData */
 228         per_read_choice(s, &choice);
 229         per_read_object_identifier(s, t124_02_98_oid);
 230
 231         /* ConnectData::connectPDU (OCTET_STRING) */
 232         per_read_length(s, &length);
 233
 234         /* ConnectGCCPDU */
 235         per_read_choice(s, &choice);
 236
 237         /* ConferenceCreateResponse::nodeID (UserID) */
 238         per_read_integer16(s, &nodeID, 1001);
 239
 240         /* ConferenceCreateResponse::tag (INTEGER) */
 241         per_read_integer(s, &tag);
 242
 243         /* ConferenceCreateResponse::result (ENUMERATED) */
 244         per_read_enumerated(s, &result, MCS_Result_enum_length);
 245
 246         /* number of UserData sets */
 247         per_read_number_of_sets(s, &number);
 248
 249         /* UserData::value present + select h221NonStandard (1) */
 250         per_read_choice(s, &choice);
 251
 252         /* h221NonStandard */
 253         per_read_octet_string(s, h221_sc_key, 4, 4); /* h221NonStandard, server-to-client H.221 key, "McDn" */
 254
 255         /* userData (OCTET_STRING) */
 256         per_read_length(s, &length);
 257         gcc_read_server_data_blocks(s, settings, length);
 258 }
 259
 260 boolean gcc_read_client_data_blocks(STREAM* s, rdpSettings *settings, int length)
 261 {
 262         uint16 type;
 263         uint16 blockLength;
 264         int pos;
 265
 266         while (length > 0)
 267         {
 268                 pos = stream_get_pos(s);
 269                 gcc_read_user_data_header(s, &type, &blockLength);
 270
 271                 switch (type)
 272                 {
 273                         case CS_CORE:
 274                                 if (!gcc_read_client_core_data(s, settings, blockLength - 4))
 275                                         return False;
 276                                 break;
 277
 278                         case CS_SECURITY:
 279                                 if (!gcc_read_client_security_data(s, settings))
 280                                         return False;
 281                                 break;
 282
 283                         case CS_NET:
 284                                 if (!gcc_read_client_network_data(s, settings))
 285                                         return False;
 286                                 break;
 287
 288                         case CS_CLUSTER:
 289                                 if (!gcc_read_client_cluster_data(s, settings))
 290                                         return False;
 291                                 break;
 292
 293                         case CS_MONITOR:
 294                                 if (!gcc_read_client_monitor_data(s, settings))
 295                                         return False;
 296                                 break;
 297
 298                         default:
 299                                 break;
 300                 }
 301
 302                 length -= blockLength;
 303                 stream_set_pos(s, pos + blockLength);
 304         }
 305
 306         return True;
 307 }
 308
 309 void gcc_write_client_data_blocks(STREAM* s, rdpSettings *settings)
 310 {
 311         gcc_write_client_core_data(s, settings);
 312         gcc_write_client_cluster_data(s, settings);
 313         gcc_write_client_security_data(s, settings);
 314         gcc_write_client_network_data(s, settings);
 315         gcc_write_client_monitor_data(s, settings);
 316 }
 317
 318 void gcc_read_server_data_blocks(STREAM* s, rdpSettings *settings, int length)
 319 {
 320         uint16 type;
 321         uint16 offset = 0;
 322         uint16 blockLength;
 323
 324         while (offset < length)
 325         {
 326                 gcc_read_user_data_header(s, &type, &blockLength);
 327
 328                 switch (type)
 329                 {
 330                         case SC_CORE:
 331                                 gcc_read_server_core_data(s, settings);
 332                                 break;
 333
 334                         case SC_SECURITY:
 335                                 gcc_read_server_security_data(s, settings);
 336                                 break;
 337
 338                         case SC_NET:
 339                                 gcc_read_server_network_data(s, settings);
 340                                 break;
 341
 342                         default:
 343                                 break;
 344                 }
 345
 346                 offset += blockLength;
 347         }
 348 }
 349
 350 void gcc_read_user_data_header(STREAM* s, uint16* type, uint16* length)
 351 {
 352         stream_read_uint16(s, *type); /* type */
 353         stream_read_uint16(s, *length); /* length */
 354 }
 355
 356 /**
 357  * Write a user data header (TS_UD_HEADER).\n
 358  * @msdn{cc240509}
 359  * @param s stream
 360  * @param type data block type
 361  * @param length data block length
 362  */
 363
 364 void gcc_write_user_data_header(STREAM* s, uint16 type, uint16 length)
 365 {
 366         stream_write_uint16(s, type); /* type */
 367         stream_write_uint16(s, length); /* length */
 368 }
 369
 370 /**
 371  * Read a client core data block (TS_UD_CS_CORE).\n
 372  * @msdn{cc240510}
 373  * @param s stream
 374  * @param settings rdp settings
 375  */
 376
 377 boolean gcc_read_client_core_data(STREAM* s, rdpSettings *settings, uint16 blockLength)
 378 {
 379         uint32 version;
 380         uint16 colorDepth = 0;
 381         uint16 postBeta2ColorDepth = 0;
 382         uint16 highColorDepth = 0;
 383         uint16 supportedColorDepths = 0;
 384         uint16 earlyCapabilityFlags = 0;
 385         uint32 serverSelectedProtocol = 0;
 386         char* str;
 387
 388         /* Length of all required fields, until imeFileName */
 389         if (blockLength < 128)
 390                 return False;
 391
 392         stream_read_uint32(s, version); /* version */
 393         settings->rdp_version = (version == RDP_VERSION_4 ? 5 : 4);
 394
 395         stream_read_uint16(s, settings->width); /* desktopWidth */
 396         stream_read_uint16(s, settings->height); /* desktopHeight */
 397         stream_read_uint16(s, colorDepth); /* colorDepth */
 398         stream_seek_uint16(s); /* SASSequence (Secure Access Sequence) */
 399         stream_read_uint32(s, settings->kbd_layout); /* keyboardLayout */
 400         stream_read_uint32(s, settings->client_build); /* clientBuild */
 401
 402         /* clientName (32 bytes, null-terminated unicode, truncated to 15 characters) */
 403         str = freerdp_uniconv_in(settings->uniconv, stream_get_tail(s), 32);
 404         stream_seek(s, 32);
 405         snprintf(settings->client_hostname, sizeof(settings->client_hostname), "%s", str);
 406         xfree(str);
 407
 408         stream_read_uint32(s, settings->kbd_type); /* keyboardType */
 409         stream_read_uint32(s, settings->kbd_subtype); /* keyboardSubType */
 410         stream_read_uint32(s, settings->kbd_fn_keys); /* keyboardFunctionKey */
 411
 412         stream_seek(s, 64); /* imeFileName */
 413
 414         blockLength -= 128;
 415
 416         /**
 417          * The following fields are all optional. If one field is present, all of the preceding
 418          * fields MUST also be present. If one field is not present, all of the subsequent fields
 419          * MUST NOT be present.
 420          * We must check the bytes left before reading each field.
 421          */
 422
 423         do
 424         {
 425                 if (blockLength < 2)
 426                         break;
 427                 stream_read_uint16(s, postBeta2ColorDepth); /* postBeta2ColorDepth */
 428                 blockLength -= 2;
 429
 430                 if (blockLength < 2)
 431                         break;
 432                 stream_seek_uint16(s); /* clientProductID */
 433                 blockLength -= 2;
 434
 435                 if (blockLength < 4)
 436                         break;
 437                 stream_seek_uint32(s); /* serialNumber */
 438                 blockLength -= 4;
 439
 440                 if (blockLength < 2)
 441                         break;
 442                 stream_read_uint16(s, highColorDepth); /* highColorDepth */
 443                 blockLength -= 2;
 444
 445                 if (blockLength < 2)
 446                         break;
 447                 stream_read_uint16(s, supportedColorDepths); /* supportedColorDepths */
 448                 blockLength -= 2;
 449
 450                 if (blockLength < 2)
 451                         break;
 452                 stream_read_uint16(s, earlyCapabilityFlags); /* earlyCapabilityFlags */
 453                 blockLength -= 2;
 454
 455                 if (blockLength < 64)
 456                         break;
 457                 str = freerdp_uniconv_in(settings->uniconv, stream_get_tail(s), 64);
 458                 stream_seek(s, 64);
 459                 snprintf(settings->client_product_id, sizeof(settings->client_product_id), "%s", str);
 460                 xfree(str);
 461                 blockLength -= 64;
 462
 463                 if (blockLength < 1)
 464                         break;
 465                 stream_read_uint8(s, settings->performance_flags); /* connectionType */
 466                 blockLength -= 1;
 467
 468                 if (blockLength < 1)
 469                         break;
 470                 stream_seek_uint8(s); /* pad1octet */
 471                 blockLength -= 1;
 472
 473                 if (blockLength < 4)
 474                         break;
 475                 stream_read_uint32(s, serverSelectedProtocol); /* serverSelectedProtocol */
 476                 blockLength -= 4;
 477
 478                 if (settings->selected_protocol != serverSelectedProtocol)
 479                         return False;
 480         } while (0);
 481
 482         return True;
 483 }
 484
 485 /**
 486  * Write a client core data block (TS_UD_CS_CORE).\n
 487  * @msdn{cc240510}
 488  * @param s stream
 489  * @param settings rdp settings
 490  */
 491
 492 void gcc_write_client_core_data(STREAM* s, rdpSettings *settings)
 493 {
 494         uint32 version;
 495         char* clientName;
 496         size_t clientNameLength;
 497         uint8 connectionType;
 498         uint16 highColorDepth;
 499         uint16 supportedColorDepths;
 500         uint16 earlyCapabilityFlags;
 501         char* clientDigProductId;
 502         size_t clientDigProductIdLength;
 503
 504         gcc_write_user_data_header(s, CS_CORE, 216);
 505
 506         version = settings->rdp_version >= 5 ? RDP_VERSION_5_PLUS : RDP_VERSION_4;
 507         clientName = freerdp_uniconv_out(settings->uniconv, settings->client_hostname, &clientNameLength);
 508         clientDigProductId = freerdp_uniconv_out(settings->uniconv, settings->client_product_id, &clientDigProductIdLength);
 509
 510         stream_write_uint32(s, version); /* version */
 511         stream_write_uint16(s, settings->width); /* desktopWidth */
 512         stream_write_uint16(s, settings->height); /* desktopHeight */
 513         stream_write_uint16(s, RNS_UD_COLOR_8BPP); /* colorDepth, ignored because of postBeta2ColorDepth */
 514         stream_write_uint16(s, RNS_UD_SAS_DEL); /* SASSequence (Secure Access Sequence) */
 515         stream_write_uint32(s, settings->kbd_layout); /* keyboardLayout */
 516         stream_write_uint32(s, settings->client_build); /* clientBuild */
 517
 518         /* clientName (32 bytes, null-terminated unicode, truncated to 15 characters) */
 519         if (clientNameLength > 30)
 520         {
 521                 clientNameLength = 30;
 522                 clientName[clientNameLength] = 0;
 523                 clientName[clientNameLength + 1] = 0;
 524         }
 525         stream_write(s, clientName, clientNameLength + 2);
 526         stream_write_zero(s, 32 - clientNameLength - 2);
 527         xfree(clientName);
 528
 529         stream_write_uint32(s, settings->kbd_type); /* keyboardType */
 530         stream_write_uint32(s, settings->kbd_subtype); /* keyboardSubType */
 531         stream_write_uint32(s, settings->kbd_fn_keys); /* keyboardFunctionKey */
 532
 533         stream_write_zero(s, 64); /* imeFileName */
 534
 535         stream_write_uint16(s, RNS_UD_COLOR_8BPP); /* postBeta2ColorDepth */
 536         stream_write_uint16(s, 1); /* clientProductID */
 537         stream_write_uint32(s, 0); /* serialNumber (should be initialized to 0) */
 538
 539         highColorDepth = MIN(settings->color_depth, 24);
 540
 541         supportedColorDepths =
 542                         RNS_UD_24BPP_SUPPORT |
 543                         RNS_UD_16BPP_SUPPORT |
 544                         RNS_UD_15BPP_SUPPORT;
 545
 546         connectionType = 0;
 547         earlyCapabilityFlags = RNS_UD_CS_SUPPORT_ERRINFO_PDU;
 548
 549         if (settings->performance_flags == PERF_FLAG_NONE)
 550         {
 551                 earlyCapabilityFlags |= RNS_UD_CS_VALID_CONNECTION_TYPE;
 552                 connectionType = CONNECTION_TYPE_LAN;
 553         }
 554
 555         if (settings->color_depth == 32)
 556         {
 557                 supportedColorDepths |= RNS_UD_32BPP_SUPPORT;
 558                 earlyCapabilityFlags |= RNS_UD_CS_WANT_32BPP_SESSION;
 559         }
 560
 561         stream_write_uint16(s, highColorDepth); /* highColorDepth */
 562         stream_write_uint16(s, supportedColorDepths); /* supportedColorDepths */
 563
 564         stream_write_uint16(s, earlyCapabilityFlags); /* earlyCapabilityFlags */
 565
 566         /* clientDigProductId (64 bytes, null-terminated unicode, truncated to 30 characters) */
 567         if (clientDigProductIdLength > 62)
 568         {
 569                 clientDigProductIdLength = 62;
 570                 clientDigProductId[clientDigProductIdLength] = 0;
 571                 clientDigProductId[clientDigProductIdLength + 1] = 0;
 572         }
 573         stream_write(s, clientDigProductId, clientDigProductIdLength + 2);
 574         stream_write_zero(s, 64 - clientDigProductIdLength - 2);
 575         xfree(clientDigProductId);
 576
 577         stream_write_uint8(s, connectionType); /* connectionType */
 578         stream_write_uint8(s, 0); /* pad1octet */
 579
 580         stream_write_uint32(s, settings->selected_protocol); /* serverSelectedProtocol */
 581 }
 582
 583 void gcc_read_server_core_data(STREAM* s, rdpSettings *settings)
 584 {
 585         uint32 version;
 586         uint32 clientRequestedProtocols;
 587
 588         stream_read_uint32(s, version); /* version */
 589         stream_read_uint32(s, clientRequestedProtocols); /* clientRequestedProtocols */
 590
 591         if (version == RDP_VERSION_4 && settings->rdp_version > 4)
 592                 settings->rdp_version = 4;
 593         else if (version == RDP_VERSION_5_PLUS && settings->rdp_version < 5)
 594                 settings->rdp_version = 7;
 595 }
 596
 597 /**
 598  * Read a client security data block (TS_UD_CS_SEC).\n
 599  * @msdn{cc240511}
 600  * @param s stream
 601  * @param settings rdp settings
 602  */
 603
 604 boolean gcc_read_client_security_data(STREAM* s, rdpSettings *settings)
 605 {
 606         printf("CS_SECURITY\n");
 607         return True;
 608 }
 609
 610 /**
 611  * Write a client security data block (TS_UD_CS_SEC).\n
 612  * @msdn{cc240511}
 613  * @param s stream
 614  * @param settings rdp settings
 615  */
 616
 617 void gcc_write_client_security_data(STREAM* s, rdpSettings *settings)
 618 {
 619         gcc_write_user_data_header(s, CS_SECURITY, 12);
 620
 621         if (settings->encryption > 0)
 622         {
 623                 stream_write_uint32(s, settings->encryption_method); /* encryptionMethods */
 624                 stream_write_uint32(s, 0); /* extEncryptionMethods */
 625         }
 626         else
 627         {
 628                 /* French locale, disable encryption */
 629                 stream_write_uint32(s, 0); /* encryptionMethods */
 630                 stream_write_uint32(s, settings->encryption_method); /* extEncryptionMethods */
 631         }
 632 }
 633
 634 void gcc_read_server_security_data(STREAM* s, rdpSettings *settings)
 635 {
 636         uint32 encryptionMethod;
 637         uint32 encryptionLevel;
 638         uint32 serverRandomLen;
 639         uint32 serverCertLen;
 640
 641         stream_read_uint32(s, encryptionMethod); /* encryptionMethod */
 642         stream_read_uint32(s, encryptionLevel); /* encryptionLevel */
 643         stream_read_uint32(s, serverRandomLen); /* serverRandomLen */
 644         stream_read_uint32(s, serverCertLen); /* serverCertLen */
 645
 646         if (encryptionMethod == 0 && encryptionLevel == 0)
 647         {
 648                 /* serverRandom and serverRandom must not be present */
 649                 return;
 650         }
 651
 652         if (serverRandomLen > 0)
 653         {
 654                 /* serverRandom */
 655                 freerdp_blob_alloc(&settings->server_random, serverRandomLen);
 656                 memcpy(settings->server_random.data, s->p, serverRandomLen);
 657                 stream_seek(s, serverRandomLen);
 658         }
 659
 660         if (serverCertLen > 0)
 661         {
 662                 /* serverCertificate */
 663                 freerdp_blob_alloc(&settings->server_certificate, serverCertLen);
 664                 memcpy(settings->server_certificate.data, s->p, serverCertLen);
 665                 stream_seek(s, serverCertLen);
 666         }
 667 }
 668
 669 /**
 670  * Read a client network data block (TS_UD_CS_NET).\n
 671  * @msdn{cc240512}
 672  * @param s stream
 673  * @param settings rdp settings
 674  */
 675
 676 boolean gcc_read_client_network_data(STREAM* s, rdpSettings *settings)
 677 {
 678         printf("CS_NETWORK\n");
 679         return True;
 680 }
 681
 682 /**
 683  * Write a client network data block (TS_UD_CS_NET).\n
 684  * @msdn{cc240512}
 685  * @param s stream
 686  * @param settings rdp settings
 687  */
 688
 689 void gcc_write_client_network_data(STREAM* s, rdpSettings *settings)
 690 {
 691         int i;
 692         uint16 length;
 693
 694         if (settings->num_channels > 0)
 695         {
 696                 length = settings->num_channels * 12 + 8;
 697                 gcc_write_user_data_header(s, CS_NET, length);
 698
 699                 stream_write_uint32(s, settings->num_channels); /* channelCount */
 700
 701                 /* channelDefArray */
 702                 for (i = 0; i < settings->num_channels; i++)
 703                 {
 704                         /* CHANNEL_DEF */
 705                         stream_write(s, settings->channels[i].name, 8); /* name (8 bytes) */
 706                         stream_write_uint32(s, settings->channels[i].options); /* options (4 bytes) */
 707                 }
 708         }
 709 }
 710
 711 void gcc_read_server_network_data(STREAM* s, rdpSettings *settings)
 712 {
 713         int i;
 714         uint16 MCSChannelId;
 715         uint16 channelCount;
 716         uint16 channelId;
 717
 718         stream_read_uint16(s, MCSChannelId); /* MCSChannelId */
 719         stream_read_uint16(s, channelCount); /* channelCount */
 720
 721         if (channelCount != settings->num_channels)
 722         {
 723                 printf("requested %d channels, got %d instead\n",
 724                                 settings->num_channels, channelCount);
 725         }
 726
 727         for (i = 0; i < channelCount; i++)
 728         {
 729                 stream_read_uint16(s, channelId); /* channelId */
 730                 settings->channels[i].chan_id = channelId;
 731         }
 732
 733         if (channelCount % 2 == 1)
 734                 stream_seek(s, 2); /* padding */
 735 }
 736
 737 /**
 738  * Read a client cluster data block (TS_UD_CS_CLUSTER).\n
 739  * @msdn{cc240514}
 740  * @param s stream
 741  * @param settings rdp settings
 742  */
 743
 744 boolean gcc_read_client_cluster_data(STREAM* s, rdpSettings *settings)
 745 {
 746         printf("CS_CLUSTER\n");
 747         return True;
 748 }
 749
 750 /**
 751  * Write a client cluster data block (TS_UD_CS_CLUSTER).\n
 752  * @msdn{cc240514}
 753  * @param s stream
 754  * @param settings rdp settings
 755  */
 756
 757 void gcc_write_client_cluster_data(STREAM* s, rdpSettings *settings)
 758 {
 759         uint32 flags;
 760
 761         gcc_write_user_data_header(s, CS_CLUSTER, 12);
 762
 763         flags = REDIRECTION_SUPPORTED | (REDIRECTION_VERSION4 << 2);
 764
 765         if (settings->console_session || settings->redirected_session_id)
 766                 flags |= REDIRECTED_SESSIONID_FIELD_VALID;
 767
 768         stream_write_uint32(s, flags); /* flags */
 769         stream_write_uint32(s, settings->redirected_session_id); /* redirectedSessionID */
 770 }
 771
 772 /**
 773  * Read a client monitor data block (TS_UD_CS_MONITOR).\n
 774  * @msdn{dd305336}
 775  * @param s stream
 776  * @param settings rdp settings
 777  */
 778
 779 boolean gcc_read_client_monitor_data(STREAM* s, rdpSettings *settings)
 780 {
 781         printf("CS_MONITOR\n");
 782         return True;
 783 }
 784
 785 /**
 786  * Write a client monitor data block (TS_UD_CS_MONITOR).\n
 787  * @msdn{dd305336}
 788  * @param s stream
 789  * @param settings rdp settings
 790  */
 791
 792 void gcc_write_client_monitor_data(STREAM* s, rdpSettings *settings)
 793 {
 794         int i;
 795         uint16 length;
 796         uint32 left, top, right, bottom, flags;
 797
 798         if (settings->num_monitors > 1)
 799         {
 800                 length = (20 * settings->num_monitors) + 12;
 801                 gcc_write_user_data_header(s, CS_MONITOR, length);
 802
 803                 stream_write_uint32(s, 0); /* flags */
 804                 stream_write_uint32(s, settings->num_monitors); /* monitorCount */
 805
 806                 for (i = 0; i < settings->num_monitors; i++)
 807                 {
 808                         left = settings->monitors[i].x;
 809                         top = settings->monitors[i].y;
 810                         right = settings->monitors[i].x + settings->monitors[i].width - 1;
 811                         bottom = settings->monitors[i].y + settings->monitors[i].height - 1;
 812                         flags = settings->monitors[i].is_primary ? MONITOR_PRIMARY : 0;
 813
 814                         stream_write_uint32(s, left); /* left */
 815                         stream_write_uint32(s, top); /* top */
 816                         stream_write_uint32(s, right); /* right */
 817                         stream_write_uint32(s, bottom); /* bottom */
 818                         stream_write_uint32(s, flags); /* flags */
 819                 }
 820         }
 821 }
 822