340 lines
9.8 KiB
C
340 lines
9.8 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Client
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* T.124 Generic Conference Control (GCC)
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*
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* Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "gcc.h"
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/**
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* T.124 GCC is defined in:
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*
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* http://www.itu.int/rec/T-REC-T.124-199802-S/en
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* ITU-T T.124 (02/98): Generic Conference Control
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*/
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/**
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* ConnectData ::= SEQUENCE
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* {
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* t124Identifier Key,
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* connectPDU OCTET_STRING
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* }
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*
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* Key ::= CHOICE
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* {
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* object OBJECT_IDENTIFIER,
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* h221NonStandard H221NonStandardIdentifier
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* }
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*
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* ConnectGCCPDU ::= CHOICE
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* {
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* conferenceCreateRequest ConferenceCreateRequest,
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* conferenceCreateResponse ConferenceCreateResponse,
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* conferenceQueryRequest ConferenceQueryRequest,
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* conferenceQueryResponse ConferenceQueryResponse,
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* conferenceJoinRequest ConferenceJoinRequest,
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* conferenceJoinResponse ConferenceJoinResponse,
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* conferenceInviteRequest ConferenceInviteRequest,
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* conferenceInviteResponse ConferenceInviteResponse,
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* ...
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* }
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*
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* ConferenceCreateRequest ::= SEQUENCE
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* {
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* conferenceName ConferenceName,
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* convenerPassword Password OPTIONAL,
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* password Password OPTIONAL,
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* lockedConference BOOLEAN,
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* listedConference BOOLEAN,
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* conductibleConference BOOLEAN,
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* terminationMethod TerminationMethod,
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* conductorPrivileges SET OF Privilege OPTIONAL,
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* conductedPrivileges SET OF Privilege OPTIONAL,
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* nonConductedPrivileges SET OF Privilege OPTIONAL,
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* conferenceDescription TextString OPTIONAL,
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* callerIdentifier TextString OPTIONAL,
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* userData UserData OPTIONAL,
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* ...,
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* conferencePriority ConferencePriority OPTIONAL,
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* conferenceMode ConferenceMode OPTIONAL
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* }
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*
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* ConferenceName ::= SEQUENCE
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* {
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* numeric SimpleNumericString
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* text SimpleTextString OPTIONAL,
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* ...
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* }
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*
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* SimpleNumericString ::= NumericString (SIZE (1..255)) (FROM ("0123456789"))
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*
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* UserData ::= SET OF SEQUENCE
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* {
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* key Key,
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* value OCTET_STRING OPTIONAL
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* }
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*
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* H221NonStandardIdentifier ::= OCTET STRING (SIZE (4..255))
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*
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*/
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/*
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* OID = 0.0.20.124.0.1
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* { itu-t(0) recommendation(0) t(20) t124(124) version(0) 1 }
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* v.1 of ITU-T Recommendation T.124 (Feb 1998): "Generic Conference Control"
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*/
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uint8 t124_02_98_oid[6] = { 0, 0, 20, 124, 0, 1 };
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/**
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* Write a GCC Conference Create Request.\n
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* @msdn{cc240836}
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* @param s stream
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* @param user_data client data blocks
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*/
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void
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gcc_write_create_conference_request(STREAM* s, STREAM* user_data)
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{
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/* ConnectData */
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per_write_choice(s, 0); /* From Key select object (0) of type OBJECT_IDENTIFIER */
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per_write_object_identifier(s, t124_02_98_oid); /* ITU-T T.124 (02/98) OBJECT_IDENTIFIER */
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/* ConnectData::connectPDU (OCTET_STRING) */
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per_write_length(s, stream_get_length(user_data) + 14); /* connectPDU length */
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/* ConnectGCCPDU */
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per_write_choice(s, 0); /* From ConnectGCCPDU select conferenceCreateRequest (0) of type ConferenceCreateRequest */
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per_write_selection(s, 0x08); /* select optional userData from ConferenceCreateRequest */
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/* ConferenceCreateRequest::conferenceName */
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per_write_numeric_string(s, "1", 1, 1); /* ConferenceName::numeric */
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per_write_padding(s, 1); /* padding */
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/* UserData (SET OF SEQUENCE) */
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per_write_number_of_sets(s, 1); /* one set of UserData */
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per_write_choice(s, 0xC0); /* UserData::value present + select h221NonStandard (1) */
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/* h221NonStandard */
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per_write_octet_string(s, "Duca", 4, 4); /* h221NonStandard, client-to-server H.221 key, "Duca" */
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/* userData::value (OCTET_STRING) */
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per_write_octet_string(s, user_data->data, stream_get_length(user_data), 0); /* array of client data blocks */
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}
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/**
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* Write a user data header (TS_UD_HEADER).\n
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* @msdn{cc240509}
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* @param s stream
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* @param type data block type
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* @param length data block length
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*/
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void
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gcc_write_user_data_header(STREAM* s, uint16 type, uint16 length)
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{
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stream_write_uint16(s, type); /* type */
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stream_write_uint16(s, length); /* length */
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}
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/**
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* Write a client core data block (TS_UD_CS_CORE).\n
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* @msdn{cc240510}
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* @param s stream
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* @param settings rdp settings
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*/
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void
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gcc_write_client_core_data(STREAM* s, rdpSettings *settings)
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{
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uint32 version;
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uint16 highColorDepth;
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uint16 supportedColorDepths;
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uint16 earlyCapabilityFlags;
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uint8 connectionType;
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gcc_write_user_data_header(s, CS_CORE, 216);
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version = settings->rdp_version >= 5 ? RDP_VERSION_5_PLUS : RDP_VERSION_4;
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stream_write_uint32(s, version); /* version */
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stream_write_uint16(s, settings->width); /* desktopWidth */
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stream_write_uint16(s, settings->height); /* desktopHeight */
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stream_write_uint16(s, RNS_UD_COLOR_8BPP); /* colorDepth, ignored because of postBeta2ColorDepth */
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stream_write_uint16(s, RNS_UD_SAS_DEL); /* SASSequence (Secure Access Sequence) */
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stream_write_uint32(s, settings->kbd_layout); /* keyboardLayout */
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stream_write_uint32(s, 2600); /* clientBuild */
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stream_write_zero(s, 32); /* clientName */
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stream_write_uint32(s, settings->kbd_type); /* keyboardType */
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stream_write_uint32(s, settings->kbd_subtype); /* keyboardSubType */
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stream_write_uint32(s, settings->kbd_fn_keys); /* keyboardFunctionKey */
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stream_write_zero(s, 64); /* imeFileName */
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stream_write_uint16(s, RNS_UD_COLOR_8BPP); /* postBeta2ColorDepth */
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stream_write_uint16(s, 1); /* clientProductID */
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stream_write_uint16(s, 0); /* serialNumber (should be initialized to 0) */
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highColorDepth = MIN(settings->color_depth, 24);
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supportedColorDepths = RNS_UD_32BPP_SUPPORT | RNS_UD_24BPP_SUPPORT | RNS_UD_16BPP_SUPPORT | RNS_UD_15BPP_SUPPORT;
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stream_write_uint16(s, highColorDepth); /* highColorDepth */
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stream_write_uint16(s, supportedColorDepths); /* supportedColorDepths */
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connectionType = 0;
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earlyCapabilityFlags = RNS_UD_CS_SUPPORT_ERRINFO_PDU;
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if (settings->performance_flags == PERF_FLAG_NONE)
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{
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earlyCapabilityFlags |= RNS_UD_CS_VALID_CONNECTION_TYPE;
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connectionType = CONNECTION_TYPE_LAN;
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}
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if (settings->color_depth == 32)
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earlyCapabilityFlags |= RNS_UD_CS_WANT_32BPP_SESSION;
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stream_write_uint16(s, earlyCapabilityFlags); /* earlyCapabilityFlags */
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stream_write_zero(s, 64); /* clientDigProductId (64 bytes) */
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stream_write_uint8(s, connectionType); /* connectionType */
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stream_write_uint8(s, 0); /* pad1octet */
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stream_write_uint32(s, settings->selected_protocol); /* serverSelectedProtocol */
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}
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/**
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* Write a client security data block (TS_UD_CS_SEC).\n
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* @msdn{cc240511}
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* @param s stream
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* @param settings rdp settings
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*/
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void
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gcc_write_client_security_data(STREAM* s, rdpSettings *settings)
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{
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uint16 encryptionMethods;
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gcc_write_user_data_header(s, CS_SECURITY, 12);
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encryptionMethods = ENCRYPTION_40BIT_FLAG | ENCRYPTION_128BIT_FLAG;
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if (settings->encryption)
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{
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stream_write_uint32(s, encryptionMethods); /* encryptionMethods */
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stream_write_uint32(s, 0); /* extEncryptionMethods */
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}
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else
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{
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/* French locale, disable encryption */
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stream_write_uint32(s, 0); /* encryptionMethods */
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stream_write_uint32(s, encryptionMethods); /* extEncryptionMethods */
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}
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}
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/**
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* Write a client network data block (TS_UD_CS_NET).\n
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* @msdn{cc240512}
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* @param s stream
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* @param settings rdp settings
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*/
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void
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gcc_write_client_network_data(STREAM* s, rdpSettings *settings)
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{
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int i;
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uint16 length;
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if (settings->num_channels > 0)
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{
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length = settings->num_channels * 12 + 8;
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gcc_write_user_data_header(s, CS_NET, length);
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stream_write_uint32(s, settings->num_channels); /* channelCount */
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/* channelDefArray */
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for (i = 0; i < settings->num_channels; i++)
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{
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/* CHANNEL_DEF */
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stream_write(s, settings->channels[i].name, 8); /* name (8 bytes) */
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stream_write_uint32(s, settings->channels[i].options); /* options (4 bytes) */
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}
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}
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}
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/**
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* Write a client cluster data block (TS_UD_CS_CLUSTER).\n
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* @msdn{cc240514}
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* @param s stream
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* @param settings rdp settings
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*/
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void
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gcc_write_client_cluster_data(STREAM* s, rdpSettings *settings)
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{
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uint32 flags;
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uint32 redirectedSessionID;
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gcc_write_user_data_header(s, CS_CLUSTER, 12);
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flags = REDIRECTION_SUPPORTED | REDIRECTION_VERSION4;
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if (settings->console_session || settings->session_id)
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flags |= REDIRECTED_SESSIONID_FIELD_VALID;
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stream_write_uint32(s, flags); /* flags */
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stream_write_uint32(s, settings->session_id); /* redirectedSessionID */
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}
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/**
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* Write a client monitor data block (TS_UD_CS_MONITOR).\n
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* @msdn{dd305336}
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* @param s stream
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* @param settings rdp settings
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*/
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void
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gcc_write_client_monitor_data(STREAM* s, rdpSettings *settings)
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{
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int i;
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uint16 length;
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uint32 left, top, right, bottom, flags;
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if (settings->num_monitors > 1)
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{
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length = (20 * settings->num_monitors) + 12;
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gcc_write_user_data_header(s, CS_MONITOR, length);
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stream_write_uint32(s, 0); /* flags */
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stream_write_uint32(s, settings->num_monitors); /* monitorCount */
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for (i = 0; i < settings->num_monitors; i++)
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{
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left = settings->monitors[i].x;
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top = settings->monitors[i].y;
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right = settings->monitors[i].x + settings->monitors[i].width - 1;
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bottom = settings->monitors[i].y + settings->monitors[i].height - 1;
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flags = settings->monitors[i].is_primary ? MONITOR_PRIMARY : 0;
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stream_write_uint32(s, left); /* left */
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stream_write_uint32(s, top); /* top */
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stream_write_uint32(s, right); /* right */
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stream_write_uint32(s, bottom); /* bottom */
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stream_write_uint32(s, flags); /* flags */
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}
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}
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}
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