1852 lines
52 KiB
C
1852 lines
52 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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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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* Copyright 2014 Norbert Federa <norbert.federa@thincast.com>
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* Copyright 2014 DI (FH) Martin Haimberger <martin.haimberger@thincast.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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <winpr/crt.h>
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#include <freerdp/log.h>
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#include "gcc.h"
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#include "certificate.h"
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#define TAG FREERDP_TAG("core.gcc")
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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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* ConferenceCreateResponse ::= SEQUENCE
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* {
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* nodeID UserID,
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* tag INTEGER,
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* result ENUMERATED
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* {
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* success (0),
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* userRejected (1),
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* resourcesNotAvailable (2),
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* rejectedForSymmetryBreaking (3),
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* lockedConferenceNotSupported (4)
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* },
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* userData UserData OPTIONAL,
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* ...
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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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* UserID ::= DynamicChannelID
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*
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* ChannelID ::= INTEGER (1..65535)
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* StaticChannelID ::= INTEGER (1..1000)
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* DynamicChannelID ::= INTEGER (1001..65535)
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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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BYTE t124_02_98_oid[6] = { 0, 0, 20, 124, 0, 1 };
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BYTE h221_cs_key[4] = "Duca";
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BYTE h221_sc_key[4] = "McDn";
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/**
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* Read a GCC Conference Create Request.\n
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* @msdn{cc240836}
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* @param s stream
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* @param settings rdp settings
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*/
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BOOL gcc_read_conference_create_request(wStream* s, rdpMcs* mcs)
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{
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UINT16 length;
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BYTE choice;
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BYTE number;
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BYTE selection;
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/* ConnectData */
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if (!per_read_choice(s, &choice))
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return FALSE;
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if (!per_read_object_identifier(s, t124_02_98_oid))
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return FALSE;
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/* ConnectData::connectPDU (OCTET_STRING) */
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if (!per_read_length(s, &length))
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return FALSE;
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/* ConnectGCCPDU */
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if (!per_read_choice(s, &choice))
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return FALSE;
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if (!per_read_selection(s, &selection))
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return FALSE;
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/* ConferenceCreateRequest::conferenceName */
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if (!per_read_numeric_string(s, 1)) /* ConferenceName::numeric */
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return FALSE;
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if (!per_read_padding(s, 1)) /* padding */
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return FALSE;
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/* UserData (SET OF SEQUENCE) */
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if (!per_read_number_of_sets(s, &number) || number != 1) /* one set of UserData */
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return FALSE;
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if (!per_read_choice(s, &choice) || choice != 0xC0) /* UserData::value present + select h221NonStandard (1) */
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return FALSE;
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/* h221NonStandard */
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if (!per_read_octet_string(s, h221_cs_key, 4, 4)) /* h221NonStandard, client-to-server H.221 key, "Duca" */
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return FALSE;
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/* userData::value (OCTET_STRING) */
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if (!per_read_length(s, &length))
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return FALSE;
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if (Stream_GetRemainingLength(s) < length)
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return FALSE;
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if (!gcc_read_client_data_blocks(s, mcs, length))
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return FALSE;
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return TRUE;
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}
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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 gcc_write_conference_create_request(wStream* s, wStream* userData)
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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_GetPosition(userData) + 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, (BYTE*)"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, h221_cs_key, 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, userData->buffer, Stream_GetPosition(userData), 0); /* array of client data blocks */
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}
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BOOL gcc_read_conference_create_response(wStream* s, rdpMcs* mcs)
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{
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UINT16 length;
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UINT32 tag;
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UINT16 nodeID;
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BYTE result;
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BYTE choice;
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BYTE number;
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/* ConnectData */
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if (!per_read_choice(s, &choice) ||
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!per_read_object_identifier(s, t124_02_98_oid))
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return FALSE;
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/* ConnectData::connectPDU (OCTET_STRING) */
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if (!per_read_length(s, &length))
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return FALSE;
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/* ConnectGCCPDU */
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if (!per_read_choice(s, &choice))
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return FALSE;
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/* ConferenceCreateResponse::nodeID (UserID) */
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if (!per_read_integer16(s, &nodeID, 1001))
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return FALSE;
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/* ConferenceCreateResponse::tag (INTEGER) */
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if (!per_read_integer(s, &tag))
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return FALSE;
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/* ConferenceCreateResponse::result (ENUMERATED) */
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if (!per_read_enumerated(s, &result, MCS_Result_enum_length))
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return FALSE;
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/* number of UserData sets */
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if (!per_read_number_of_sets(s, &number))
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return FALSE;
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/* UserData::value present + select h221NonStandard (1) */
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if (!per_read_choice(s, &choice))
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return FALSE;
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/* h221NonStandard */
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if (!per_read_octet_string(s, h221_sc_key, 4, 4)) /* h221NonStandard, server-to-client H.221 key, "McDn" */
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return FALSE;
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/* userData (OCTET_STRING) */
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if (!per_read_length(s, &length))
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return FALSE;
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if (!gcc_read_server_data_blocks(s, mcs, length))
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{
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WLog_ERR(TAG, "gcc_read_conference_create_response: gcc_read_server_data_blocks failed");
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return FALSE;
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}
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return TRUE;
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}
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void gcc_write_conference_create_response(wStream* s, wStream* userData)
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{
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/* ConnectData */
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per_write_choice(s, 0);
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per_write_object_identifier(s, t124_02_98_oid);
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/* ConnectData::connectPDU (OCTET_STRING) */
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/* This length MUST be ignored by the client according to [MS-RDPBCGR] */
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per_write_length(s, 0x2A);
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/* ConnectGCCPDU */
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per_write_choice(s, 0x14);
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/* ConferenceCreateResponse::nodeID (UserID) */
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per_write_integer16(s, 0x79F3, 1001);
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/* ConferenceCreateResponse::tag (INTEGER) */
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per_write_integer(s, 1);
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/* ConferenceCreateResponse::result (ENUMERATED) */
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per_write_enumerated(s, 0, MCS_Result_enum_length);
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/* number of UserData sets */
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per_write_number_of_sets(s, 1);
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/* UserData::value present + select h221NonStandard (1) */
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per_write_choice(s, 0xC0);
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/* h221NonStandard */
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per_write_octet_string(s, h221_sc_key, 4, 4); /* h221NonStandard, server-to-client H.221 key, "McDn" */
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/* userData (OCTET_STRING) */
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per_write_octet_string(s, userData->buffer, Stream_GetPosition(userData), 0); /* array of server data blocks */
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}
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BOOL gcc_read_client_data_blocks(wStream* s, rdpMcs* mcs, int length)
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{
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UINT16 type;
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UINT16 blockLength;
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int begPos, endPos;
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while (length > 0)
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{
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begPos = Stream_GetPosition(s);
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if (!gcc_read_user_data_header(s, &type, &blockLength))
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return FALSE;
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if (Stream_GetRemainingLength(s) < (size_t) (blockLength - 4))
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return FALSE;
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switch (type)
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{
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case CS_CORE:
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if (!gcc_read_client_core_data(s, mcs, blockLength - 4))
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return FALSE;
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break;
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case CS_SECURITY:
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if (!gcc_read_client_security_data(s, mcs, blockLength - 4))
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return FALSE;
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break;
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case CS_NET:
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if (!gcc_read_client_network_data(s, mcs, blockLength - 4))
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return FALSE;
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break;
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case CS_CLUSTER:
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if (!gcc_read_client_cluster_data(s, mcs, blockLength - 4))
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return FALSE;
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break;
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case CS_MONITOR:
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if (!gcc_read_client_monitor_data(s, mcs, blockLength - 4))
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return FALSE;
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break;
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case CS_MCS_MSGCHANNEL:
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if (!gcc_read_client_message_channel_data(s, mcs, blockLength - 4))
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return FALSE;
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break;
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case CS_MONITOR_EX:
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if (!gcc_read_client_monitor_extended_data(s, mcs, blockLength - 4))
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return FALSE;
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break;
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case 0xC009:
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case CS_MULTITRANSPORT:
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if (!gcc_read_client_multitransport_channel_data(s, mcs, blockLength - 4))
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return FALSE;
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break;
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default:
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WLog_ERR(TAG, "Unknown GCC client data block: 0x%04X", type);
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Stream_Seek(s, blockLength - 4);
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break;
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}
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endPos = Stream_GetPosition(s);
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if (endPos != (begPos + blockLength))
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{
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WLog_ERR(TAG, "Error parsing GCC client data block 0x%04X: Actual Offset: %d Expected Offset: %d",
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type, endPos, begPos + blockLength);
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}
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length -= blockLength;
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Stream_SetPosition(s, begPos + blockLength);
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}
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return TRUE;
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}
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void gcc_write_client_data_blocks(wStream* s, rdpMcs* mcs)
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{
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rdpSettings* settings = mcs->settings;
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gcc_write_client_core_data(s, mcs);
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gcc_write_client_cluster_data(s, mcs);
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gcc_write_client_security_data(s, mcs);
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gcc_write_client_network_data(s, mcs);
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/* extended client data supported */
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if (settings->NegotiationFlags & EXTENDED_CLIENT_DATA_SUPPORTED)
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{
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if (settings->UseMultimon && !settings->SpanMonitors)
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{
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gcc_write_client_monitor_data(s, mcs);
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gcc_write_client_monitor_extended_data(s, mcs);
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}
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gcc_write_client_message_channel_data(s, mcs);
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gcc_write_client_multitransport_channel_data(s, mcs);
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}
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else
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{
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if (settings->UseMultimon && !settings->SpanMonitors)
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{
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WLog_ERR(TAG, "WARNING: true multi monitor support was not advertised by server!");
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if (settings->ForceMultimon)
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{
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WLog_ERR(TAG, "Sending multi monitor information anyway (may break connectivity!)");
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gcc_write_client_monitor_data(s, mcs);
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gcc_write_client_monitor_extended_data(s, mcs);
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}
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else
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{
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WLog_ERR(TAG, "Use /multimon:force to force sending multi monitor information");
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}
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}
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}
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}
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BOOL gcc_read_server_data_blocks(wStream* s, rdpMcs* mcs, int length)
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{
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UINT16 type;
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UINT16 offset = 0;
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UINT16 blockLength;
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BYTE* holdp;
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while (offset < length)
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{
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holdp = Stream_Pointer(s);
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if (!gcc_read_user_data_header(s, &type, &blockLength))
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{
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WLog_ERR(TAG, "gcc_read_server_data_blocks: gcc_read_user_data_header failed");
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return FALSE;
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}
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|
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switch (type)
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{
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case SC_CORE:
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if (!gcc_read_server_core_data(s, mcs))
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{
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WLog_ERR(TAG, "gcc_read_server_data_blocks: gcc_read_server_core_data failed");
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return FALSE;
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}
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break;
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case SC_SECURITY:
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if (!gcc_read_server_security_data(s, mcs))
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{
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WLog_ERR(TAG, "gcc_read_server_data_blocks: gcc_read_server_security_data failed");
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return FALSE;
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}
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break;
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case SC_NET:
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if (!gcc_read_server_network_data(s, mcs))
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{
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WLog_ERR(TAG, "gcc_read_server_data_blocks: gcc_read_server_network_data failed");
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return FALSE;
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}
|
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break;
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case SC_MCS_MSGCHANNEL:
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if (!gcc_read_server_message_channel_data(s, mcs))
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{
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WLog_ERR(TAG, "gcc_read_server_data_blocks: gcc_read_server_message_channel_data failed");
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return FALSE;
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}
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break;
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case SC_MULTITRANSPORT:
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if (!gcc_read_server_multitransport_channel_data(s, mcs))
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{
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WLog_ERR(TAG, "gcc_read_server_data_blocks: gcc_read_server_multitransport_channel_data failed");
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return FALSE;
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}
|
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break;
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|
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default:
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WLog_ERR(TAG, "gcc_read_server_data_blocks: ignoring type=%hu", type);
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break;
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}
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offset += blockLength;
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Stream_Pointer(s) = holdp + blockLength;
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}
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return TRUE;
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}
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|
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BOOL gcc_write_server_data_blocks(wStream* s, rdpMcs* mcs)
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{
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return gcc_write_server_core_data(s, mcs) && /* serverCoreData */
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gcc_write_server_network_data(s, mcs) && /* serverNetworkData */
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gcc_write_server_security_data(s, mcs) && /* serverSecurityData */
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gcc_write_server_message_channel_data(s, mcs); /* serverMessageChannelData */
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/* TODO: Send these GCC data blocks only when the client sent them */
|
|
//gcc_write_server_multitransport_channel_data(s, settings); /* serverMultitransportChannelData */
|
|
}
|
|
|
|
BOOL gcc_read_user_data_header(wStream* s, UINT16* type, UINT16* length)
|
|
{
|
|
if (Stream_GetRemainingLength(s) < 4)
|
|
return FALSE;
|
|
|
|
Stream_Read_UINT16(s, *type); /* type */
|
|
Stream_Read_UINT16(s, *length); /* length */
|
|
|
|
if (Stream_GetRemainingLength(s) < (size_t) (*length - 4))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Write a user data header (TS_UD_HEADER).\n
|
|
* @msdn{cc240509}
|
|
* @param s stream
|
|
* @param type data block type
|
|
* @param length data block length
|
|
*/
|
|
|
|
void gcc_write_user_data_header(wStream* s, UINT16 type, UINT16 length)
|
|
{
|
|
Stream_Write_UINT16(s, type); /* type */
|
|
Stream_Write_UINT16(s, length); /* length */
|
|
}
|
|
|
|
/**
|
|
* Read a client core data block (TS_UD_CS_CORE).\n
|
|
* @msdn{cc240510}
|
|
* @param s stream
|
|
* @param settings rdp settings
|
|
*/
|
|
|
|
BOOL gcc_read_client_core_data(wStream* s, rdpMcs* mcs, UINT16 blockLength)
|
|
{
|
|
char* str = NULL;
|
|
UINT32 version;
|
|
BYTE connectionType = 0;
|
|
UINT32 clientColorDepth;
|
|
UINT16 colorDepth = 0;
|
|
UINT16 postBeta2ColorDepth = 0;
|
|
UINT16 highColorDepth = 0;
|
|
UINT16 supportedColorDepths = 0;
|
|
UINT32 serverSelectedProtocol = 0;
|
|
UINT16 earlyCapabilityFlags = 0;
|
|
rdpSettings* settings = mcs->settings;
|
|
|
|
/* Length of all required fields, until imeFileName */
|
|
if (blockLength < 128)
|
|
return FALSE;
|
|
|
|
Stream_Read_UINT32(s, version); /* version (4 bytes) */
|
|
settings->RdpVersion = (version == RDP_VERSION_4 ? 4 : 7);
|
|
|
|
Stream_Read_UINT16(s, settings->DesktopWidth); /* DesktopWidth (2 bytes) */
|
|
Stream_Read_UINT16(s, settings->DesktopHeight); /* DesktopHeight (2 bytes) */
|
|
Stream_Read_UINT16(s, colorDepth); /* ColorDepth (2 bytes) */
|
|
Stream_Seek_UINT16(s); /* SASSequence (Secure Access Sequence) (2 bytes) */
|
|
Stream_Read_UINT32(s, settings->KeyboardLayout); /* KeyboardLayout (4 bytes) */
|
|
Stream_Read_UINT32(s, settings->ClientBuild); /* ClientBuild (4 bytes) */
|
|
|
|
/* clientName (32 bytes, null-terminated unicode, truncated to 15 characters) */
|
|
ConvertFromUnicode(CP_UTF8, 0, (WCHAR*) Stream_Pointer(s), 32 / 2, &str, 0, NULL, NULL);
|
|
Stream_Seek(s, 32);
|
|
sprintf_s(settings->ClientHostname, 31, "%s", str);
|
|
settings->ClientHostname[31] = 0;
|
|
free(str);
|
|
str = NULL;
|
|
|
|
Stream_Read_UINT32(s, settings->KeyboardType); /* KeyboardType (4 bytes) */
|
|
Stream_Read_UINT32(s, settings->KeyboardSubType); /* KeyboardSubType (4 bytes) */
|
|
Stream_Read_UINT32(s, settings->KeyboardFunctionKey); /* KeyboardFunctionKey (4 bytes) */
|
|
|
|
Stream_Seek(s, 64); /* imeFileName (64 bytes) */
|
|
|
|
blockLength -= 128;
|
|
|
|
/**
|
|
* The following fields are all optional. If one field is present, all of the preceding
|
|
* fields MUST also be present. If one field is not present, all of the subsequent fields
|
|
* MUST NOT be present.
|
|
* We must check the bytes left before reading each field.
|
|
*/
|
|
|
|
do
|
|
{
|
|
if (blockLength < 2)
|
|
break;
|
|
Stream_Read_UINT16(s, postBeta2ColorDepth); /* postBeta2ColorDepth (2 bytes) */
|
|
blockLength -= 2;
|
|
|
|
if (blockLength < 2)
|
|
break;
|
|
Stream_Seek_UINT16(s); /* clientProductID (2 bytes) */
|
|
blockLength -= 2;
|
|
|
|
if (blockLength < 4)
|
|
break;
|
|
Stream_Seek_UINT32(s); /* serialNumber (4 bytes) */
|
|
blockLength -= 4;
|
|
|
|
if (blockLength < 2)
|
|
break;
|
|
Stream_Read_UINT16(s, highColorDepth); /* highColorDepth (2 bytes) */
|
|
blockLength -= 2;
|
|
|
|
if (blockLength < 2)
|
|
break;
|
|
Stream_Read_UINT16(s, supportedColorDepths); /* supportedColorDepths (2 bytes) */
|
|
blockLength -= 2;
|
|
|
|
if (blockLength < 2)
|
|
break;
|
|
Stream_Read_UINT16(s, earlyCapabilityFlags); /* earlyCapabilityFlags (2 bytes) */
|
|
settings->EarlyCapabilityFlags = (UINT32) earlyCapabilityFlags;
|
|
blockLength -= 2;
|
|
|
|
if (blockLength < 64)
|
|
break;
|
|
|
|
ConvertFromUnicode(CP_UTF8, 0, (WCHAR*) Stream_Pointer(s), 64 / 2, &str, 0, NULL, NULL);
|
|
Stream_Seek(s, 64); /* clientDigProductId (64 bytes) */
|
|
sprintf_s(settings->ClientProductId, 32, "%s", str);
|
|
free(str);
|
|
blockLength -= 64;
|
|
|
|
if (blockLength < 1)
|
|
break;
|
|
Stream_Read_UINT8(s, connectionType); /* connectionType (1 byte) */
|
|
blockLength -= 1;
|
|
|
|
if (blockLength < 1)
|
|
break;
|
|
Stream_Seek_UINT8(s); /* pad1octet (1 byte) */
|
|
blockLength -= 1;
|
|
|
|
if (blockLength < 4)
|
|
break;
|
|
Stream_Read_UINT32(s, serverSelectedProtocol); /* serverSelectedProtocol (4 bytes) */
|
|
blockLength -= 4;
|
|
|
|
if (blockLength < 4)
|
|
break;
|
|
Stream_Read_UINT32(s, settings->DesktopPhysicalWidth); /* desktopPhysicalWidth (4 bytes) */
|
|
blockLength -= 4;
|
|
|
|
if (blockLength < 4)
|
|
break;
|
|
Stream_Read_UINT32(s, settings->DesktopPhysicalHeight); /* desktopPhysicalHeight (4 bytes) */
|
|
blockLength -= 4;
|
|
|
|
if (blockLength < 2)
|
|
break;
|
|
Stream_Read_UINT16(s, settings->DesktopOrientation); /* desktopOrientation (2 bytes) */
|
|
blockLength -= 2;
|
|
|
|
if (blockLength < 4)
|
|
break;
|
|
Stream_Read_UINT32(s, settings->DesktopScaleFactor); /* desktopScaleFactor (4 bytes) */
|
|
blockLength -= 4;
|
|
|
|
if (blockLength < 4)
|
|
break;
|
|
Stream_Read_UINT32(s, settings->DeviceScaleFactor); /* deviceScaleFactor (4 bytes) */
|
|
blockLength -= 4;
|
|
|
|
if (settings->SelectedProtocol != serverSelectedProtocol)
|
|
return FALSE;
|
|
} while (0);
|
|
|
|
if (highColorDepth > 0)
|
|
{
|
|
if (earlyCapabilityFlags & RNS_UD_CS_WANT_32BPP_SESSION)
|
|
clientColorDepth = 32;
|
|
else
|
|
clientColorDepth = highColorDepth;
|
|
}
|
|
else if (postBeta2ColorDepth > 0)
|
|
{
|
|
switch (postBeta2ColorDepth)
|
|
{
|
|
case RNS_UD_COLOR_4BPP:
|
|
clientColorDepth = 4;
|
|
break;
|
|
case RNS_UD_COLOR_8BPP:
|
|
clientColorDepth = 8;
|
|
break;
|
|
case RNS_UD_COLOR_16BPP_555:
|
|
clientColorDepth = 15;
|
|
break;
|
|
case RNS_UD_COLOR_16BPP_565:
|
|
clientColorDepth = 16;
|
|
break;
|
|
case RNS_UD_COLOR_24BPP:
|
|
clientColorDepth = 24;
|
|
break;
|
|
default:
|
|
return FALSE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
switch (colorDepth)
|
|
{
|
|
case RNS_UD_COLOR_4BPP:
|
|
clientColorDepth = 4;
|
|
break;
|
|
case RNS_UD_COLOR_8BPP:
|
|
clientColorDepth = 8;
|
|
break;
|
|
default:
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If we are in server mode, accept client's color depth only if
|
|
* it is smaller than ours. This is what Windows server does.
|
|
*/
|
|
if ((clientColorDepth < settings->ColorDepth) || !settings->ServerMode)
|
|
settings->ColorDepth = clientColorDepth;
|
|
|
|
if (settings->NetworkAutoDetect)
|
|
settings->NetworkAutoDetect = (earlyCapabilityFlags & RNS_UD_CS_SUPPORT_NETWORK_AUTODETECT) ? TRUE : FALSE;
|
|
|
|
if (settings->SupportHeartbeatPdu)
|
|
settings->SupportHeartbeatPdu = (earlyCapabilityFlags & RNS_UD_CS_SUPPORT_HEARTBEAT_PDU) ? TRUE : FALSE;
|
|
|
|
if (settings->SupportGraphicsPipeline)
|
|
settings->SupportGraphicsPipeline = (earlyCapabilityFlags & RNS_UD_CS_SUPPORT_DYNVC_GFX_PROTOCOL) ? TRUE : FALSE;
|
|
|
|
if (settings->SupportDynamicTimeZone)
|
|
settings->SupportDynamicTimeZone = (earlyCapabilityFlags & RNS_UD_CS_SUPPORT_DYNAMIC_TIME_ZONE) ? TRUE : FALSE;
|
|
|
|
if (!(earlyCapabilityFlags & RNS_UD_CS_VALID_CONNECTION_TYPE))
|
|
connectionType = 0;
|
|
|
|
settings->SupportErrorInfoPdu = earlyCapabilityFlags & RNS_UD_CS_SUPPORT_ERRINFO_PDU;
|
|
|
|
settings->ConnectionType = connectionType;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Write a client core data block (TS_UD_CS_CORE).\n
|
|
* @msdn{cc240510}
|
|
* @param s stream
|
|
* @param settings rdp settings
|
|
*/
|
|
|
|
void gcc_write_client_core_data(wStream* s, rdpMcs* mcs)
|
|
{
|
|
UINT32 version;
|
|
WCHAR* clientName = NULL;
|
|
int clientNameLength;
|
|
BYTE connectionType;
|
|
UINT16 highColorDepth;
|
|
UINT16 supportedColorDepths;
|
|
UINT16 earlyCapabilityFlags;
|
|
WCHAR* clientDigProductId = NULL;
|
|
int clientDigProductIdLength;
|
|
rdpSettings* settings = mcs->settings;
|
|
|
|
gcc_write_user_data_header(s, CS_CORE, 234);
|
|
|
|
version = settings->RdpVersion >= 5 ? RDP_VERSION_5_PLUS : RDP_VERSION_4;
|
|
|
|
clientNameLength = ConvertToUnicode(CP_UTF8, 0, settings->ClientHostname, -1, &clientName, 0);
|
|
clientDigProductIdLength = ConvertToUnicode(CP_UTF8, 0, settings->ClientProductId, -1, &clientDigProductId, 0);
|
|
|
|
Stream_Write_UINT32(s, version); /* Version */
|
|
Stream_Write_UINT16(s, settings->DesktopWidth); /* DesktopWidth */
|
|
Stream_Write_UINT16(s, settings->DesktopHeight); /* DesktopHeight */
|
|
Stream_Write_UINT16(s, RNS_UD_COLOR_8BPP); /* ColorDepth, ignored because of postBeta2ColorDepth */
|
|
Stream_Write_UINT16(s, RNS_UD_SAS_DEL); /* SASSequence (Secure Access Sequence) */
|
|
Stream_Write_UINT32(s, settings->KeyboardLayout); /* KeyboardLayout */
|
|
Stream_Write_UINT32(s, settings->ClientBuild); /* ClientBuild */
|
|
|
|
/* clientName (32 bytes, null-terminated unicode, truncated to 15 characters) */
|
|
|
|
if (clientNameLength >= 16)
|
|
{
|
|
clientNameLength = 16;
|
|
clientName[clientNameLength - 1] = 0;
|
|
}
|
|
|
|
Stream_Write(s, clientName, (clientNameLength * 2));
|
|
Stream_Zero(s, 32 - (clientNameLength * 2));
|
|
free(clientName);
|
|
|
|
Stream_Write_UINT32(s, settings->KeyboardType); /* KeyboardType */
|
|
Stream_Write_UINT32(s, settings->KeyboardSubType); /* KeyboardSubType */
|
|
Stream_Write_UINT32(s, settings->KeyboardFunctionKey); /* KeyboardFunctionKey */
|
|
|
|
Stream_Zero(s, 64); /* imeFileName */
|
|
|
|
Stream_Write_UINT16(s, RNS_UD_COLOR_8BPP); /* postBeta2ColorDepth */
|
|
Stream_Write_UINT16(s, 1); /* clientProductID */
|
|
Stream_Write_UINT32(s, 0); /* serialNumber (should be initialized to 0) */
|
|
|
|
highColorDepth = MIN(settings->ColorDepth, 24);
|
|
|
|
supportedColorDepths =
|
|
RNS_UD_24BPP_SUPPORT |
|
|
RNS_UD_16BPP_SUPPORT |
|
|
RNS_UD_15BPP_SUPPORT;
|
|
|
|
earlyCapabilityFlags = RNS_UD_CS_SUPPORT_ERRINFO_PDU;
|
|
|
|
if (settings->NetworkAutoDetect)
|
|
settings->ConnectionType = CONNECTION_TYPE_AUTODETECT;
|
|
|
|
if (settings->RemoteFxCodec && !settings->NetworkAutoDetect)
|
|
settings->ConnectionType = CONNECTION_TYPE_LAN;
|
|
|
|
connectionType = settings->ConnectionType;
|
|
|
|
if (connectionType)
|
|
earlyCapabilityFlags |= RNS_UD_CS_VALID_CONNECTION_TYPE;
|
|
|
|
if (settings->ColorDepth == 32)
|
|
{
|
|
supportedColorDepths |= RNS_UD_32BPP_SUPPORT;
|
|
earlyCapabilityFlags |= RNS_UD_CS_WANT_32BPP_SESSION;
|
|
}
|
|
|
|
if (settings->NetworkAutoDetect)
|
|
earlyCapabilityFlags |= RNS_UD_CS_SUPPORT_NETWORK_AUTODETECT;
|
|
|
|
if (settings->SupportHeartbeatPdu)
|
|
earlyCapabilityFlags |= RNS_UD_CS_SUPPORT_HEARTBEAT_PDU;
|
|
|
|
if (settings->SupportGraphicsPipeline)
|
|
earlyCapabilityFlags |= RNS_UD_CS_SUPPORT_DYNVC_GFX_PROTOCOL;
|
|
|
|
if (settings->SupportDynamicTimeZone)
|
|
earlyCapabilityFlags |= RNS_UD_CS_SUPPORT_DYNAMIC_TIME_ZONE;
|
|
|
|
Stream_Write_UINT16(s, highColorDepth); /* highColorDepth */
|
|
Stream_Write_UINT16(s, supportedColorDepths); /* supportedColorDepths */
|
|
|
|
Stream_Write_UINT16(s, earlyCapabilityFlags); /* earlyCapabilityFlags */
|
|
|
|
/* clientDigProductId (64 bytes, null-terminated unicode, truncated to 31 characters) */
|
|
if (clientDigProductIdLength >= 32)
|
|
{
|
|
clientDigProductIdLength = 32;
|
|
clientDigProductId[clientDigProductIdLength - 1] = 0;
|
|
}
|
|
Stream_Write(s, clientDigProductId, (clientDigProductIdLength * 2) );
|
|
Stream_Zero(s, 64 - (clientDigProductIdLength * 2) );
|
|
free(clientDigProductId);
|
|
|
|
Stream_Write_UINT8(s, connectionType); /* connectionType */
|
|
Stream_Write_UINT8(s, 0); /* pad1octet */
|
|
|
|
Stream_Write_UINT32(s, settings->SelectedProtocol); /* serverSelectedProtocol */
|
|
|
|
Stream_Write_UINT32(s, settings->DesktopPhysicalWidth); /* desktopPhysicalWidth */
|
|
Stream_Write_UINT32(s, settings->DesktopPhysicalHeight); /* desktopPhysicalHeight */
|
|
Stream_Write_UINT16(s, settings->DesktopOrientation); /* desktopOrientation */
|
|
Stream_Write_UINT32(s, settings->DesktopScaleFactor); /* desktopScaleFactor */
|
|
Stream_Write_UINT32(s, settings->DeviceScaleFactor); /* deviceScaleFactor */
|
|
}
|
|
|
|
BOOL gcc_read_server_core_data(wStream* s, rdpMcs* mcs)
|
|
{
|
|
UINT32 version;
|
|
UINT32 clientRequestedProtocols;
|
|
UINT32 earlyCapabilityFlags;
|
|
rdpSettings* settings = mcs->settings;
|
|
|
|
if (Stream_GetRemainingLength(s) < 4)
|
|
return FALSE;
|
|
|
|
Stream_Read_UINT32(s, version); /* version */
|
|
|
|
if (version == RDP_VERSION_4 && settings->RdpVersion > 4)
|
|
settings->RdpVersion = 4;
|
|
else if (version == RDP_VERSION_5_PLUS && settings->RdpVersion < 5)
|
|
settings->RdpVersion = 7;
|
|
|
|
if (Stream_GetRemainingLength(s) >= 4)
|
|
{
|
|
Stream_Read_UINT32(s, clientRequestedProtocols); /* clientRequestedProtocols */
|
|
}
|
|
|
|
if (Stream_GetRemainingLength(s) >= 4)
|
|
{
|
|
Stream_Read_UINT32(s, earlyCapabilityFlags); /* earlyCapabilityFlags */
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
BOOL gcc_write_server_core_data(wStream* s, rdpMcs* mcs)
|
|
{
|
|
UINT32 version;
|
|
UINT32 earlyCapabilityFlags = 0;
|
|
rdpSettings* settings = mcs->settings;
|
|
|
|
if (!Stream_EnsureRemainingCapacity(s, 20))
|
|
return FALSE;
|
|
|
|
gcc_write_user_data_header(s, SC_CORE, 16);
|
|
|
|
version = settings->RdpVersion == 4 ? RDP_VERSION_4 : RDP_VERSION_5_PLUS;
|
|
|
|
if (settings->SupportDynamicTimeZone)
|
|
earlyCapabilityFlags |= RNS_UD_SC_DYNAMIC_DST_SUPPORTED;
|
|
|
|
Stream_Write_UINT32(s, version); /* version (4 bytes) */
|
|
Stream_Write_UINT32(s, settings->RequestedProtocols); /* clientRequestedProtocols (4 bytes) */
|
|
Stream_Write_UINT32(s, earlyCapabilityFlags); /* earlyCapabilityFlags (4 bytes) */
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Read a client security data block (TS_UD_CS_SEC).\n
|
|
* @msdn{cc240511}
|
|
* @param s stream
|
|
* @param settings rdp settings
|
|
*/
|
|
|
|
BOOL gcc_read_client_security_data(wStream* s, rdpMcs* mcs, UINT16 blockLength)
|
|
{
|
|
rdpSettings* settings = mcs->settings;
|
|
|
|
if (blockLength < 8)
|
|
return FALSE;
|
|
|
|
if (settings->UseRdpSecurityLayer)
|
|
{
|
|
Stream_Read_UINT32(s, settings->EncryptionMethods); /* encryptionMethods */
|
|
if (settings->EncryptionMethods == 0)
|
|
Stream_Read_UINT32(s, settings->EncryptionMethods); /* extEncryptionMethods */
|
|
else
|
|
Stream_Seek(s, 4);
|
|
}
|
|
else
|
|
{
|
|
Stream_Seek(s, 8);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Write a client security data block (TS_UD_CS_SEC).\n
|
|
* @msdn{cc240511}
|
|
* @param s stream
|
|
* @param settings rdp settings
|
|
*/
|
|
|
|
void gcc_write_client_security_data(wStream* s, rdpMcs* mcs)
|
|
{
|
|
rdpSettings* settings = mcs->settings;
|
|
|
|
gcc_write_user_data_header(s, CS_SECURITY, 12);
|
|
|
|
if (settings->UseRdpSecurityLayer)
|
|
{
|
|
Stream_Write_UINT32(s, settings->EncryptionMethods); /* encryptionMethods */
|
|
Stream_Write_UINT32(s, 0); /* extEncryptionMethods */
|
|
}
|
|
else
|
|
{
|
|
/* French locale, disable encryption */
|
|
Stream_Write_UINT32(s, 0); /* encryptionMethods */
|
|
Stream_Write_UINT32(s, settings->EncryptionMethods); /* extEncryptionMethods */
|
|
}
|
|
}
|
|
|
|
BOOL gcc_read_server_security_data(wStream* s, rdpMcs* mcs)
|
|
{
|
|
BYTE* data;
|
|
UINT32 length;
|
|
rdpSettings* settings = mcs->settings;
|
|
BOOL validCryptoConfig = FALSE;
|
|
UINT32 serverEncryptionMethod;
|
|
|
|
if (Stream_GetRemainingLength(s) < 8)
|
|
return FALSE;
|
|
|
|
Stream_Read_UINT32(s, serverEncryptionMethod); /* encryptionMethod */
|
|
Stream_Read_UINT32(s, settings->EncryptionLevel); /* encryptionLevel */
|
|
|
|
/* Only accept valid/known encryption methods */
|
|
switch (serverEncryptionMethod)
|
|
{
|
|
case ENCRYPTION_METHOD_NONE:
|
|
WLog_DBG(TAG, "Server rdp encryption method: NONE");
|
|
break;
|
|
case ENCRYPTION_METHOD_40BIT:
|
|
WLog_DBG(TAG, "Server rdp encryption method: 40BIT");
|
|
break;
|
|
case ENCRYPTION_METHOD_56BIT:
|
|
WLog_DBG(TAG, "Server rdp encryption method: 56BIT");
|
|
break;
|
|
case ENCRYPTION_METHOD_128BIT:
|
|
WLog_DBG(TAG, "Server rdp encryption method: 128BIT");
|
|
break;
|
|
case ENCRYPTION_METHOD_FIPS:
|
|
WLog_DBG(TAG, "Server rdp encryption method: FIPS");
|
|
break;
|
|
default:
|
|
WLog_ERR(TAG, "Received unknown encryption method %08X", serverEncryptionMethod);
|
|
return FALSE;
|
|
}
|
|
|
|
if (settings->UseRdpSecurityLayer && !(settings->EncryptionMethods & serverEncryptionMethod))
|
|
{
|
|
WLog_WARN(TAG, "Server uses non-advertised encryption method 0x%08X", serverEncryptionMethod);
|
|
/* FIXME: Should we return FALSE; in this case ?? */
|
|
}
|
|
|
|
settings->EncryptionMethods = serverEncryptionMethod;
|
|
|
|
/* Verify encryption level/method combinations according to MS-RDPBCGR Section 5.3.2 */
|
|
switch (settings->EncryptionLevel)
|
|
{
|
|
case ENCRYPTION_LEVEL_NONE:
|
|
if (settings->EncryptionMethods == ENCRYPTION_METHOD_NONE)
|
|
{
|
|
validCryptoConfig = TRUE;
|
|
}
|
|
break;
|
|
case ENCRYPTION_LEVEL_FIPS:
|
|
if (settings->EncryptionMethods == ENCRYPTION_METHOD_FIPS)
|
|
{
|
|
validCryptoConfig = TRUE;
|
|
}
|
|
break;
|
|
case ENCRYPTION_LEVEL_LOW:
|
|
case ENCRYPTION_LEVEL_HIGH:
|
|
case ENCRYPTION_LEVEL_CLIENT_COMPATIBLE:
|
|
if (settings->EncryptionMethods == ENCRYPTION_METHOD_40BIT ||
|
|
settings->EncryptionMethods == ENCRYPTION_METHOD_56BIT ||
|
|
settings->EncryptionMethods == ENCRYPTION_METHOD_128BIT ||
|
|
settings->EncryptionMethods == ENCRYPTION_METHOD_FIPS)
|
|
{
|
|
validCryptoConfig = TRUE;
|
|
}
|
|
break;
|
|
default:
|
|
WLog_ERR(TAG, "Received unknown encryption level %08X", settings->EncryptionLevel);
|
|
}
|
|
|
|
if (!validCryptoConfig)
|
|
{
|
|
WLog_ERR(TAG, "Received invalid cryptographic configuration (level=0x%08X method=0x%08X)",
|
|
settings->EncryptionLevel, settings->EncryptionMethods);
|
|
return FALSE;
|
|
}
|
|
|
|
if (settings->EncryptionLevel == ENCRYPTION_LEVEL_NONE)
|
|
{
|
|
/* serverRandomLen and serverCertLen must not be present */
|
|
settings->UseRdpSecurityLayer = FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
if (Stream_GetRemainingLength(s) < 8)
|
|
return FALSE;
|
|
|
|
Stream_Read_UINT32(s, settings->ServerRandomLength); /* serverRandomLen */
|
|
Stream_Read_UINT32(s, settings->ServerCertificateLength); /* serverCertLen */
|
|
|
|
if (Stream_GetRemainingLength(s) < settings->ServerRandomLength + settings->ServerCertificateLength)
|
|
return FALSE;
|
|
|
|
if ((settings->ServerRandomLength <= 0) || (settings->ServerCertificateLength <= 0))
|
|
return FALSE;
|
|
|
|
/* serverRandom */
|
|
settings->ServerRandom = (BYTE*) malloc(settings->ServerRandomLength);
|
|
if (!settings->ServerRandom)
|
|
return FALSE;
|
|
Stream_Read(s, settings->ServerRandom, settings->ServerRandomLength);
|
|
|
|
|
|
/* serverCertificate */
|
|
settings->ServerCertificate = (BYTE*) malloc(settings->ServerCertificateLength);
|
|
if (!settings->ServerCertificate)
|
|
return FALSE;
|
|
Stream_Read(s, settings->ServerCertificate, settings->ServerCertificateLength);
|
|
|
|
certificate_free(settings->RdpServerCertificate);
|
|
settings->RdpServerCertificate = certificate_new();
|
|
if (!settings->RdpServerCertificate)
|
|
return FALSE;
|
|
|
|
data = settings->ServerCertificate;
|
|
length = settings->ServerCertificateLength;
|
|
|
|
return certificate_read_server_certificate(settings->RdpServerCertificate, data, length);
|
|
}
|
|
|
|
static const BYTE initial_signature[] =
|
|
{
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x01
|
|
};
|
|
|
|
/*
|
|
* Terminal Services Signing Keys.
|
|
* Yes, Terminal Services Private Key is publicly available.
|
|
*/
|
|
|
|
const BYTE tssk_modulus[] =
|
|
{
|
|
0x3d, 0x3a, 0x5e, 0xbd, 0x72, 0x43, 0x3e, 0xc9,
|
|
0x4d, 0xbb, 0xc1, 0x1e, 0x4a, 0xba, 0x5f, 0xcb,
|
|
0x3e, 0x88, 0x20, 0x87, 0xef, 0xf5, 0xc1, 0xe2,
|
|
0xd7, 0xb7, 0x6b, 0x9a, 0xf2, 0x52, 0x45, 0x95,
|
|
0xce, 0x63, 0x65, 0x6b, 0x58, 0x3a, 0xfe, 0xef,
|
|
0x7c, 0xe7, 0xbf, 0xfe, 0x3d, 0xf6, 0x5c, 0x7d,
|
|
0x6c, 0x5e, 0x06, 0x09, 0x1a, 0xf5, 0x61, 0xbb,
|
|
0x20, 0x93, 0x09, 0x5f, 0x05, 0x6d, 0xea, 0x87
|
|
};
|
|
|
|
const BYTE tssk_privateExponent[] =
|
|
{
|
|
0x87, 0xa7, 0x19, 0x32, 0xda, 0x11, 0x87, 0x55,
|
|
0x58, 0x00, 0x16, 0x16, 0x25, 0x65, 0x68, 0xf8,
|
|
0x24, 0x3e, 0xe6, 0xfa, 0xe9, 0x67, 0x49, 0x94,
|
|
0xcf, 0x92, 0xcc, 0x33, 0x99, 0xe8, 0x08, 0x60,
|
|
0x17, 0x9a, 0x12, 0x9f, 0x24, 0xdd, 0xb1, 0x24,
|
|
0x99, 0xc7, 0x3a, 0xb8, 0x0a, 0x7b, 0x0d, 0xdd,
|
|
0x35, 0x07, 0x79, 0x17, 0x0b, 0x51, 0x9b, 0xb3,
|
|
0xc7, 0x10, 0x01, 0x13, 0xe7, 0x3f, 0xf3, 0x5f
|
|
};
|
|
|
|
const BYTE tssk_exponent[] =
|
|
{
|
|
0x5b, 0x7b, 0x88, 0xc0
|
|
};
|
|
|
|
BOOL gcc_write_server_security_data(wStream* s, rdpMcs* mcs)
|
|
{
|
|
CryptoMd5 md5;
|
|
BYTE* sigData;
|
|
int expLen, keyLen, sigDataLen;
|
|
BYTE encryptedSignature[TSSK_KEY_LENGTH];
|
|
BYTE signature[sizeof(initial_signature)];
|
|
UINT32 headerLen, serverRandomLen, serverCertLen, wPublicKeyBlobLen;
|
|
rdpSettings* settings = mcs->settings;
|
|
|
|
/**
|
|
* Re: settings->EncryptionLevel:
|
|
* This is configured/set by the server implementation and serves the same
|
|
* purpose as the "Encryption Level" setting in the RDP-Tcp configuration
|
|
* dialog of Microsoft's Remote Desktop Session Host Configuration.
|
|
* Re: settings->EncryptionMethods:
|
|
* at this point this setting contains the client's supported encryption
|
|
* methods we've received in gcc_read_client_security_data()
|
|
*/
|
|
|
|
if (!settings->UseRdpSecurityLayer)
|
|
{
|
|
/* TLS/NLA is used: disable rdp style encryption */
|
|
settings->EncryptionLevel = ENCRYPTION_LEVEL_NONE;
|
|
}
|
|
|
|
/* verify server encryption level value */
|
|
switch (settings->EncryptionLevel)
|
|
{
|
|
case ENCRYPTION_LEVEL_NONE:
|
|
WLog_INFO(TAG, "Active rdp encryption level: NONE");
|
|
break;
|
|
case ENCRYPTION_LEVEL_FIPS:
|
|
WLog_INFO(TAG, "Active rdp encryption level: FIPS Compliant");
|
|
break;
|
|
case ENCRYPTION_LEVEL_HIGH:
|
|
WLog_INFO(TAG, "Active rdp encryption level: HIGH");
|
|
break;
|
|
case ENCRYPTION_LEVEL_LOW:
|
|
WLog_INFO(TAG, "Active rdp encryption level: LOW");
|
|
break;
|
|
case ENCRYPTION_LEVEL_CLIENT_COMPATIBLE:
|
|
WLog_INFO(TAG, "Active rdp encryption level: CLIENT-COMPATIBLE");
|
|
break;
|
|
default:
|
|
WLog_ERR(TAG, "Invalid server encryption level 0x%08X", settings->EncryptionLevel);
|
|
WLog_ERR(TAG, "Switching to encryption level CLIENT-COMPATIBLE");
|
|
settings->EncryptionLevel = ENCRYPTION_LEVEL_CLIENT_COMPATIBLE;
|
|
}
|
|
|
|
/* choose rdp encryption method based on server level and client methods */
|
|
switch (settings->EncryptionLevel)
|
|
{
|
|
case ENCRYPTION_LEVEL_NONE:
|
|
/* The only valid method is NONE in this case */
|
|
settings->EncryptionMethods = ENCRYPTION_METHOD_NONE;
|
|
break;
|
|
case ENCRYPTION_LEVEL_FIPS:
|
|
/* The only valid method is FIPS in this case */
|
|
if (!(settings->EncryptionMethods & ENCRYPTION_METHOD_FIPS))
|
|
{
|
|
WLog_WARN(TAG, "client does not support FIPS as required by server configuration");
|
|
}
|
|
settings->EncryptionMethods = ENCRYPTION_METHOD_FIPS;
|
|
break;
|
|
case ENCRYPTION_LEVEL_HIGH:
|
|
/* Maximum key strength supported by the server must be used (128 bit)*/
|
|
if (!(settings->EncryptionMethods & ENCRYPTION_METHOD_128BIT))
|
|
{
|
|
WLog_WARN(TAG, "client does not support 128 bit encryption method as required by server configuration");
|
|
}
|
|
settings->EncryptionMethods = ENCRYPTION_METHOD_128BIT;
|
|
break;
|
|
case ENCRYPTION_LEVEL_LOW:
|
|
case ENCRYPTION_LEVEL_CLIENT_COMPATIBLE:
|
|
/* Maximum key strength supported by the client must be used */
|
|
if (settings->EncryptionMethods & ENCRYPTION_METHOD_128BIT)
|
|
settings->EncryptionMethods = ENCRYPTION_METHOD_128BIT;
|
|
else if (settings->EncryptionMethods & ENCRYPTION_METHOD_56BIT)
|
|
settings->EncryptionMethods = ENCRYPTION_METHOD_56BIT;
|
|
else if (settings->EncryptionMethods & ENCRYPTION_METHOD_40BIT)
|
|
settings->EncryptionMethods = ENCRYPTION_METHOD_40BIT;
|
|
else if (settings->EncryptionMethods & ENCRYPTION_METHOD_FIPS)
|
|
settings->EncryptionMethods = ENCRYPTION_METHOD_FIPS;
|
|
else
|
|
{
|
|
WLog_WARN(TAG, "client has not announced any supported encryption methods");
|
|
settings->EncryptionMethods = ENCRYPTION_METHOD_128BIT;
|
|
}
|
|
break;
|
|
default:
|
|
WLog_ERR(TAG, "internal error: unknown encryption level");
|
|
return FALSE;
|
|
}
|
|
|
|
/* log selected encryption method */
|
|
switch (settings->EncryptionMethods)
|
|
{
|
|
case ENCRYPTION_METHOD_NONE:
|
|
WLog_INFO(TAG, "Selected rdp encryption method: NONE");
|
|
break;
|
|
case ENCRYPTION_METHOD_40BIT:
|
|
WLog_INFO(TAG, "Selected rdp encryption method: 40BIT");
|
|
break;
|
|
case ENCRYPTION_METHOD_56BIT:
|
|
WLog_INFO(TAG, "Selected rdp encryption method: 56BIT");
|
|
break;
|
|
case ENCRYPTION_METHOD_128BIT:
|
|
WLog_INFO(TAG, "Selected rdp encryption method: 128BIT");
|
|
break;
|
|
case ENCRYPTION_METHOD_FIPS:
|
|
WLog_INFO(TAG, "Selected rdp encryption method: FIPS");
|
|
break;
|
|
default:
|
|
WLog_ERR(TAG, "internal error: unknown encryption method");
|
|
return FALSE;
|
|
}
|
|
|
|
headerLen = 12;
|
|
keyLen = 0;
|
|
wPublicKeyBlobLen = 0;
|
|
serverRandomLen = 0;
|
|
serverCertLen = 0;
|
|
|
|
if (settings->EncryptionMethods != ENCRYPTION_METHOD_NONE)
|
|
{
|
|
serverRandomLen = 32;
|
|
|
|
keyLen = settings->RdpServerRsaKey->ModulusLength;
|
|
expLen = sizeof(settings->RdpServerRsaKey->exponent);
|
|
wPublicKeyBlobLen = 4; /* magic (RSA1) */
|
|
wPublicKeyBlobLen += 4; /* keylen */
|
|
wPublicKeyBlobLen += 4; /* bitlen */
|
|
wPublicKeyBlobLen += 4; /* datalen */
|
|
wPublicKeyBlobLen += expLen;
|
|
wPublicKeyBlobLen += keyLen;
|
|
wPublicKeyBlobLen += 8; /* 8 bytes of zero padding */
|
|
|
|
serverCertLen = 4; /* dwVersion */
|
|
serverCertLen += 4; /* dwSigAlgId */
|
|
serverCertLen += 4; /* dwKeyAlgId */
|
|
serverCertLen += 2; /* wPublicKeyBlobType */
|
|
serverCertLen += 2; /* wPublicKeyBlobLen */
|
|
serverCertLen += wPublicKeyBlobLen;
|
|
serverCertLen += 2; /* wSignatureBlobType */
|
|
serverCertLen += 2; /* wSignatureBlobLen */
|
|
serverCertLen += sizeof(encryptedSignature); /* SignatureBlob */
|
|
serverCertLen += 8; /* 8 bytes of zero padding */
|
|
|
|
headerLen += sizeof(serverRandomLen);
|
|
headerLen += sizeof(serverCertLen);
|
|
headerLen += serverRandomLen;
|
|
headerLen += serverCertLen;
|
|
}
|
|
|
|
if (!Stream_EnsureRemainingCapacity(s, headerLen + 4))
|
|
return FALSE;
|
|
gcc_write_user_data_header(s, SC_SECURITY, headerLen);
|
|
|
|
Stream_Write_UINT32(s, settings->EncryptionMethods); /* encryptionMethod */
|
|
Stream_Write_UINT32(s, settings->EncryptionLevel); /* encryptionLevel */
|
|
|
|
if (settings->EncryptionMethods == ENCRYPTION_METHOD_NONE)
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
Stream_Write_UINT32(s, serverRandomLen); /* serverRandomLen */
|
|
Stream_Write_UINT32(s, serverCertLen); /* serverCertLen */
|
|
|
|
settings->ServerRandomLength = serverRandomLen;
|
|
settings->ServerRandom = (BYTE*) malloc(serverRandomLen);
|
|
crypto_nonce(settings->ServerRandom, serverRandomLen);
|
|
Stream_Write(s, settings->ServerRandom, serverRandomLen);
|
|
|
|
sigData = Stream_Pointer(s);
|
|
|
|
Stream_Write_UINT32(s, CERT_CHAIN_VERSION_1); /* dwVersion (4 bytes) */
|
|
Stream_Write_UINT32(s, SIGNATURE_ALG_RSA); /* dwSigAlgId */
|
|
Stream_Write_UINT32(s, KEY_EXCHANGE_ALG_RSA); /* dwKeyAlgId */
|
|
Stream_Write_UINT16(s, BB_RSA_KEY_BLOB); /* wPublicKeyBlobType */
|
|
|
|
Stream_Write_UINT16(s, wPublicKeyBlobLen); /* wPublicKeyBlobLen */
|
|
Stream_Write(s, "RSA1", 4); /* magic */
|
|
Stream_Write_UINT32(s, keyLen + 8); /* keylen */
|
|
Stream_Write_UINT32(s, keyLen * 8); /* bitlen */
|
|
Stream_Write_UINT32(s, keyLen - 1); /* datalen */
|
|
|
|
Stream_Write(s, settings->RdpServerRsaKey->exponent, expLen);
|
|
Stream_Write(s, settings->RdpServerRsaKey->Modulus, keyLen);
|
|
Stream_Zero(s, 8);
|
|
|
|
sigDataLen = Stream_Pointer(s) - sigData;
|
|
|
|
Stream_Write_UINT16(s, BB_RSA_SIGNATURE_BLOB); /* wSignatureBlobType */
|
|
Stream_Write_UINT16(s, sizeof(encryptedSignature) + 8); /* wSignatureBlobLen */
|
|
|
|
memcpy(signature, initial_signature, sizeof(initial_signature));
|
|
|
|
md5 = crypto_md5_init();
|
|
if (!md5)
|
|
{
|
|
WLog_ERR(TAG, "unable to allocate a md5");
|
|
return FALSE;
|
|
}
|
|
|
|
crypto_md5_update(md5, sigData, sigDataLen);
|
|
crypto_md5_final(md5, signature);
|
|
|
|
crypto_rsa_private_encrypt(signature, sizeof(signature), TSSK_KEY_LENGTH,
|
|
tssk_modulus, tssk_privateExponent, encryptedSignature);
|
|
|
|
Stream_Write(s, encryptedSignature, sizeof(encryptedSignature));
|
|
Stream_Zero(s, 8);
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Read a client network data block (TS_UD_CS_NET).\n
|
|
* @msdn{cc240512}
|
|
* @param s stream
|
|
* @param settings rdp settings
|
|
*/
|
|
|
|
BOOL gcc_read_client_network_data(wStream* s, rdpMcs* mcs, UINT16 blockLength)
|
|
{
|
|
UINT32 i;
|
|
|
|
if (blockLength < 4)
|
|
return FALSE;
|
|
|
|
Stream_Read_UINT32(s, mcs->channelCount); /* channelCount */
|
|
|
|
if (blockLength < 4 + mcs->channelCount * 12)
|
|
return FALSE;
|
|
|
|
if (mcs->channelCount > 16)
|
|
return FALSE;
|
|
|
|
/* channelDefArray */
|
|
for (i = 0; i < mcs->channelCount; i++)
|
|
{
|
|
/* CHANNEL_DEF */
|
|
Stream_Read(s, mcs->channels[i].Name, 8); /* name (8 bytes) */
|
|
Stream_Read_UINT32(s, mcs->channels[i].options); /* options (4 bytes) */
|
|
mcs->channels[i].ChannelId = mcs->baseChannelId++;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Write a client network data block (TS_UD_CS_NET).\n
|
|
* @msdn{cc240512}
|
|
* @param s stream
|
|
* @param settings rdp settings
|
|
*/
|
|
|
|
void gcc_write_client_network_data(wStream* s, rdpMcs* mcs)
|
|
{
|
|
UINT32 i;
|
|
UINT16 length;
|
|
|
|
if (mcs->channelCount > 0)
|
|
{
|
|
length = mcs->channelCount * 12 + 8;
|
|
gcc_write_user_data_header(s, CS_NET, length);
|
|
|
|
Stream_Write_UINT32(s, mcs->channelCount); /* channelCount */
|
|
|
|
/* channelDefArray */
|
|
for (i = 0; i < mcs->channelCount; i++)
|
|
{
|
|
/* CHANNEL_DEF */
|
|
Stream_Write(s, mcs->channels[i].Name, 8); /* name (8 bytes) */
|
|
Stream_Write_UINT32(s, mcs->channels[i].options); /* options (4 bytes) */
|
|
}
|
|
}
|
|
}
|
|
|
|
BOOL gcc_read_server_network_data(wStream* s, rdpMcs* mcs)
|
|
{
|
|
int i;
|
|
UINT16 channelId;
|
|
UINT16 MCSChannelId;
|
|
UINT16 channelCount;
|
|
UINT16 parsedChannelCount;
|
|
|
|
if (Stream_GetRemainingLength(s) < 4)
|
|
return FALSE;
|
|
|
|
Stream_Read_UINT16(s, MCSChannelId); /* MCSChannelId */
|
|
Stream_Read_UINT16(s, channelCount); /* channelCount */
|
|
|
|
parsedChannelCount = channelCount;
|
|
|
|
if (channelCount != mcs->channelCount)
|
|
{
|
|
WLog_ERR(TAG, "requested %d channels, got %d instead",
|
|
mcs->channelCount, channelCount);
|
|
|
|
/* we ensure that the response is not bigger than the request */
|
|
|
|
if (channelCount > mcs->channelCount)
|
|
parsedChannelCount = mcs->channelCount;
|
|
}
|
|
|
|
if (Stream_GetRemainingLength(s) < (size_t) channelCount * 2)
|
|
return FALSE;
|
|
|
|
for (i = 0; i < parsedChannelCount; i++)
|
|
{
|
|
Stream_Read_UINT16(s, channelId); /* channelId */
|
|
mcs->channels[i].ChannelId = channelId;
|
|
}
|
|
|
|
if (channelCount % 2 == 1)
|
|
return Stream_SafeSeek(s, 2); /* padding */
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
BOOL gcc_write_server_network_data(wStream* s, rdpMcs* mcs)
|
|
{
|
|
UINT32 i;
|
|
int payloadLen = 8 + mcs->channelCount * 2 + (mcs->channelCount % 2 == 1 ? 2 : 0);
|
|
|
|
if (!Stream_EnsureRemainingCapacity(s, payloadLen + 4))
|
|
return FALSE;
|
|
|
|
gcc_write_user_data_header(s, SC_NET, payloadLen);
|
|
|
|
Stream_Write_UINT16(s, MCS_GLOBAL_CHANNEL_ID); /* MCSChannelId */
|
|
Stream_Write_UINT16(s, mcs->channelCount); /* channelCount */
|
|
|
|
for (i = 0; i < mcs->channelCount; i++)
|
|
{
|
|
Stream_Write_UINT16(s, mcs->channels[i].ChannelId);
|
|
}
|
|
|
|
if (mcs->channelCount % 2 == 1)
|
|
Stream_Write_UINT16(s, 0);
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Read a client cluster data block (TS_UD_CS_CLUSTER).\n
|
|
* @msdn{cc240514}
|
|
* @param s stream
|
|
* @param settings rdp settings
|
|
*/
|
|
|
|
BOOL gcc_read_client_cluster_data(wStream* s, rdpMcs* mcs, UINT16 blockLength)
|
|
{
|
|
UINT32 flags;
|
|
UINT32 redirectedSessionId;
|
|
rdpSettings* settings = mcs->settings;
|
|
|
|
if (blockLength < 8)
|
|
return FALSE;
|
|
|
|
Stream_Read_UINT32(s, flags); /* flags */
|
|
Stream_Read_UINT32(s, redirectedSessionId); /* redirectedSessionId */
|
|
|
|
if (flags & REDIRECTED_SESSIONID_FIELD_VALID)
|
|
settings->RedirectedSessionId = redirectedSessionId;
|
|
|
|
if (blockLength != 8)
|
|
{
|
|
if (Stream_GetRemainingLength(s) >= (blockLength - 8))
|
|
{
|
|
/* The old Microsoft Mac RDP client can send a pad here */
|
|
Stream_Seek(s, (blockLength - 8));
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Write a client cluster data block (TS_UD_CS_CLUSTER).\n
|
|
* @msdn{cc240514}
|
|
* @param s stream
|
|
* @param settings rdp settings
|
|
*/
|
|
|
|
void gcc_write_client_cluster_data(wStream* s, rdpMcs* mcs)
|
|
{
|
|
UINT32 flags;
|
|
rdpSettings* settings = mcs->settings;
|
|
|
|
gcc_write_user_data_header(s, CS_CLUSTER, 12);
|
|
|
|
flags = REDIRECTION_SUPPORTED | (REDIRECTION_VERSION4 << 2);
|
|
|
|
if (settings->ConsoleSession || settings->RedirectedSessionId)
|
|
flags |= REDIRECTED_SESSIONID_FIELD_VALID;
|
|
|
|
Stream_Write_UINT32(s, flags); /* flags */
|
|
Stream_Write_UINT32(s, settings->RedirectedSessionId); /* redirectedSessionID */
|
|
}
|
|
|
|
/**
|
|
* Read a client monitor data block (TS_UD_CS_MONITOR).\n
|
|
* @msdn{dd305336}
|
|
* @param s stream
|
|
* @param settings rdp settings
|
|
*/
|
|
|
|
BOOL gcc_read_client_monitor_data(wStream* s, rdpMcs* mcs, UINT16 blockLength)
|
|
{
|
|
UINT32 index;
|
|
UINT32 flags;
|
|
UINT32 monitorCount;
|
|
UINT32 left, top, right, bottom;
|
|
rdpSettings* settings = mcs->settings;
|
|
|
|
if (blockLength < 8)
|
|
return FALSE;
|
|
|
|
Stream_Read_UINT32(s, flags); /* flags */
|
|
Stream_Read_UINT32(s, monitorCount); /* monitorCount */
|
|
|
|
if (((blockLength - 8) / 20) < monitorCount)
|
|
return FALSE;
|
|
|
|
settings->MonitorCount = monitorCount;
|
|
|
|
for (index = 0; index < monitorCount; index++)
|
|
{
|
|
Stream_Read_UINT32(s, left); /* left */
|
|
Stream_Read_UINT32(s, top); /* top */
|
|
Stream_Read_UINT32(s, right); /* right */
|
|
Stream_Read_UINT32(s, bottom); /* bottom */
|
|
Stream_Read_UINT32(s, flags); /* flags */
|
|
|
|
settings->MonitorDefArray[index].x = left;
|
|
settings->MonitorDefArray[index].y = top;
|
|
settings->MonitorDefArray[index].width = right - left + 1;
|
|
settings->MonitorDefArray[index].height = bottom - top + 1;
|
|
settings->MonitorDefArray[index].is_primary = (flags & MONITOR_PRIMARY);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Write a client monitor data block (TS_UD_CS_MONITOR).\n
|
|
* @msdn{dd305336}
|
|
* @param s stream
|
|
* @param settings rdp settings
|
|
*/
|
|
|
|
void gcc_write_client_monitor_data(wStream* s, rdpMcs* mcs)
|
|
{
|
|
int i;
|
|
UINT16 length;
|
|
UINT32 left, top, right, bottom, flags;
|
|
rdpSettings* settings = mcs->settings;
|
|
|
|
if (settings->MonitorCount > 1)
|
|
{
|
|
length = (20 * settings->MonitorCount) + 12;
|
|
gcc_write_user_data_header(s, CS_MONITOR, length);
|
|
|
|
Stream_Write_UINT32(s, 0); /* flags */
|
|
Stream_Write_UINT32(s, settings->MonitorCount); /* monitorCount */
|
|
|
|
for (i = 0; i < settings->MonitorCount; i++)
|
|
{
|
|
left = settings->MonitorDefArray[i].x;
|
|
top = settings->MonitorDefArray[i].y;
|
|
right = settings->MonitorDefArray[i].x + settings->MonitorDefArray[i].width - 1;
|
|
bottom = settings->MonitorDefArray[i].y + settings->MonitorDefArray[i].height - 1;
|
|
flags = settings->MonitorDefArray[i].is_primary ? MONITOR_PRIMARY : 0;
|
|
|
|
Stream_Write_UINT32(s, left); /* left */
|
|
Stream_Write_UINT32(s, top); /* top */
|
|
Stream_Write_UINT32(s, right); /* right */
|
|
Stream_Write_UINT32(s, bottom); /* bottom */
|
|
Stream_Write_UINT32(s, flags); /* flags */
|
|
}
|
|
}
|
|
}
|
|
|
|
BOOL gcc_read_client_monitor_extended_data(wStream* s, rdpMcs* mcs, UINT16 blockLength)
|
|
{
|
|
UINT32 index;
|
|
UINT32 flags;
|
|
UINT32 monitorCount;
|
|
UINT32 monitorAttributeSize;
|
|
rdpSettings* settings = mcs->settings;
|
|
|
|
if (blockLength < 12)
|
|
return FALSE;
|
|
|
|
Stream_Read_UINT32(s, flags); /* flags */
|
|
Stream_Read_UINT32(s, monitorAttributeSize); /* monitorAttributeSize */
|
|
Stream_Read_UINT32(s, monitorCount); /* monitorCount */
|
|
|
|
if (monitorAttributeSize != 20)
|
|
return FALSE;
|
|
|
|
if ((blockLength - 12) / monitorAttributeSize < monitorCount)
|
|
return FALSE;
|
|
|
|
if (settings->MonitorCount != monitorCount)
|
|
return FALSE;
|
|
|
|
settings->HasMonitorAttributes = TRUE;
|
|
|
|
for (index = 0; index < monitorCount; index++)
|
|
{
|
|
Stream_Read_UINT32(s, settings->MonitorDefArray[index].attributes.physicalWidth); /* physicalWidth */
|
|
Stream_Read_UINT32(s, settings->MonitorDefArray[index].attributes.physicalHeight); /* physicalHeight */
|
|
Stream_Read_UINT32(s, settings->MonitorDefArray[index].attributes.orientation); /* orientation */
|
|
Stream_Read_UINT32(s, settings->MonitorDefArray[index].attributes.desktopScaleFactor); /* desktopScaleFactor */
|
|
Stream_Read_UINT32(s, settings->MonitorDefArray[index].attributes.deviceScaleFactor); /* deviceScaleFactor */
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void gcc_write_client_monitor_extended_data(wStream* s, rdpMcs* mcs)
|
|
{
|
|
int i;
|
|
UINT16 length;
|
|
rdpSettings* settings = mcs->settings;
|
|
|
|
if (settings->HasMonitorAttributes)
|
|
{
|
|
length = (20 * settings->MonitorCount) + 16;
|
|
gcc_write_user_data_header(s, CS_MONITOR_EX, length);
|
|
|
|
Stream_Write_UINT32(s, 0); /* flags */
|
|
Stream_Write_UINT32(s, 20); /* monitorAttributeSize */
|
|
Stream_Write_UINT32(s, settings->MonitorCount); /* monitorCount */
|
|
|
|
for (i = 0; i < settings->MonitorCount; i++)
|
|
{
|
|
Stream_Write_UINT32(s, settings->MonitorDefArray[i].attributes.physicalWidth); /* physicalWidth */
|
|
Stream_Write_UINT32(s, settings->MonitorDefArray[i].attributes.physicalHeight); /* physicalHeight */
|
|
Stream_Write_UINT32(s, settings->MonitorDefArray[i].attributes.orientation); /* orientation */
|
|
Stream_Write_UINT32(s, settings->MonitorDefArray[i].attributes.desktopScaleFactor); /* desktopScaleFactor */
|
|
Stream_Write_UINT32(s, settings->MonitorDefArray[i].attributes.deviceScaleFactor); /* deviceScaleFactor */
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Read a client message channel data block (TS_UD_CS_MCS_MSGCHANNEL).\n
|
|
* @msdn{jj217627}
|
|
* @param s stream
|
|
* @param settings rdp settings
|
|
*/
|
|
|
|
BOOL gcc_read_client_message_channel_data(wStream* s, rdpMcs* mcs, UINT16 blockLength)
|
|
{
|
|
UINT32 flags;
|
|
|
|
if (blockLength < 4)
|
|
return FALSE;
|
|
|
|
Stream_Read_UINT32(s, flags);
|
|
|
|
mcs->messageChannelId = mcs->baseChannelId++;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Write a client message channel data block (TS_UD_CS_MCS_MSGCHANNEL).\n
|
|
* @msdn{jj217627}
|
|
* @param s stream
|
|
* @param settings rdp settings
|
|
*/
|
|
|
|
void gcc_write_client_message_channel_data(wStream* s, rdpMcs* mcs)
|
|
{
|
|
rdpSettings* settings = mcs->settings;
|
|
|
|
if (settings->NetworkAutoDetect ||
|
|
settings->SupportHeartbeatPdu ||
|
|
settings->SupportMultitransport)
|
|
{
|
|
gcc_write_user_data_header(s, CS_MCS_MSGCHANNEL, 8);
|
|
|
|
Stream_Write_UINT32(s, 0); /* flags */
|
|
}
|
|
}
|
|
|
|
BOOL gcc_read_server_message_channel_data(wStream* s, rdpMcs* mcs)
|
|
{
|
|
UINT16 MCSChannelId;
|
|
|
|
if (Stream_GetRemainingLength(s) < 2)
|
|
return FALSE;
|
|
|
|
Stream_Read_UINT16(s, MCSChannelId); /* MCSChannelId */
|
|
|
|
/* Save the MCS message channel id */
|
|
mcs->messageChannelId = MCSChannelId;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
BOOL gcc_write_server_message_channel_data(wStream* s, rdpMcs* mcs)
|
|
{
|
|
if (mcs->messageChannelId == 0)
|
|
return TRUE;
|
|
|
|
if (!Stream_EnsureRemainingCapacity(s, 2 + 4))
|
|
return FALSE;
|
|
|
|
gcc_write_user_data_header(s, SC_MCS_MSGCHANNEL, 6);
|
|
|
|
Stream_Write_UINT16(s, mcs->messageChannelId); /* mcsChannelId (2 bytes) */
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Read a client multitransport channel data block (TS_UD_CS_MULTITRANSPORT).\n
|
|
* @msdn{jj217498}
|
|
* @param s stream
|
|
* @param settings rdp settings
|
|
*/
|
|
|
|
BOOL gcc_read_client_multitransport_channel_data(wStream* s, rdpMcs* mcs, UINT16 blockLength)
|
|
{
|
|
UINT32 flags;
|
|
|
|
if (blockLength < 4)
|
|
return FALSE;
|
|
|
|
Stream_Read_UINT32(s, flags);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Write a client multitransport channel data block (TS_UD_CS_MULTITRANSPORT).\n
|
|
* @msdn{jj217498}
|
|
* @param s stream
|
|
* @param settings rdp settings
|
|
*/
|
|
|
|
void gcc_write_client_multitransport_channel_data(wStream* s, rdpMcs* mcs)
|
|
{
|
|
rdpSettings* settings = mcs->settings;
|
|
|
|
if (settings->MultitransportFlags != 0)
|
|
{
|
|
gcc_write_user_data_header(s, CS_MULTITRANSPORT, 8);
|
|
|
|
Stream_Write_UINT32(s, settings->MultitransportFlags); /* flags */
|
|
}
|
|
}
|
|
|
|
BOOL gcc_read_server_multitransport_channel_data(wStream* s, rdpMcs* mcs)
|
|
{
|
|
UINT32 flags;
|
|
|
|
if (Stream_GetRemainingLength(s) < 4)
|
|
return FALSE;
|
|
|
|
Stream_Read_UINT32(s, flags); /* flags */
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void gcc_write_server_multitransport_channel_data(wStream* s, rdpMcs* mcs)
|
|
{
|
|
UINT32 flags = 0;
|
|
|
|
gcc_write_user_data_header(s, SC_MULTITRANSPORT, 8);
|
|
|
|
Stream_Write_UINT32(s, flags); /* flags (4 bytes) */
|
|
}
|