d59c0a49c3
When some channels are filtered, some misalignement of channel ids could happen. This patch keeps track of the back and front channel ids to correctly identify a channel and send packets with the correct channel id.
186 lines
6.0 KiB
C
186 lines
6.0 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* T.125 Multipoint Communication Service (MCS) Protocol
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*
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* Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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* Copyright 2015 Thincast Technologies GmbH
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* Copyright 2015 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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#ifndef FREERDP_LIB_CORE_MCS_H
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#define FREERDP_LIB_CORE_MCS_H
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typedef struct rdp_mcs rdpMcs;
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#include "transport.h"
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#include <freerdp/crypto/ber.h>
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#include <freerdp/api.h>
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#include <freerdp/types.h>
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#include <winpr/stream.h>
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#include <winpr/wtsapi.h>
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enum MCS_Result
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{
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MCS_Result_successful = 0,
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MCS_Result_domain_merging = 1,
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MCS_Result_domain_not_hierarchical = 2,
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MCS_Result_no_such_channel = 3,
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MCS_Result_no_such_domain = 4,
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MCS_Result_no_such_user = 5,
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MCS_Result_not_admitted = 6,
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MCS_Result_other_user_id = 7,
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MCS_Result_parameters_unacceptable = 8,
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MCS_Result_token_not_available = 9,
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MCS_Result_token_not_possessed = 10,
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MCS_Result_too_many_channels = 11,
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MCS_Result_too_many_tokens = 12,
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MCS_Result_too_many_users = 13,
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MCS_Result_unspecified_failure = 14,
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MCS_Result_user_rejected = 15,
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MCS_Result_enum_length = 16
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};
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typedef enum
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{
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DomainMCSPDU_invalid = -1,
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DomainMCSPDU_PlumbDomainIndication = 0,
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DomainMCSPDU_ErectDomainRequest = 1,
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DomainMCSPDU_MergeChannelsRequest = 2,
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DomainMCSPDU_MergeChannelsConfirm = 3,
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DomainMCSPDU_PurgeChannelsIndication = 4,
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DomainMCSPDU_MergeTokensRequest = 5,
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DomainMCSPDU_MergeTokensConfirm = 6,
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DomainMCSPDU_PurgeTokensIndication = 7,
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DomainMCSPDU_DisconnectProviderUltimatum = 8,
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DomainMCSPDU_RejectMCSPDUUltimatum = 9,
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DomainMCSPDU_AttachUserRequest = 10,
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DomainMCSPDU_AttachUserConfirm = 11,
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DomainMCSPDU_DetachUserRequest = 12,
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DomainMCSPDU_DetachUserIndication = 13,
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DomainMCSPDU_ChannelJoinRequest = 14,
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DomainMCSPDU_ChannelJoinConfirm = 15,
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DomainMCSPDU_ChannelLeaveRequest = 16,
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DomainMCSPDU_ChannelConveneRequest = 17,
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DomainMCSPDU_ChannelConveneConfirm = 18,
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DomainMCSPDU_ChannelDisbandRequest = 19,
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DomainMCSPDU_ChannelDisbandIndication = 20,
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DomainMCSPDU_ChannelAdmitRequest = 21,
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DomainMCSPDU_ChannelAdmitIndication = 22,
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DomainMCSPDU_ChannelExpelRequest = 23,
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DomainMCSPDU_ChannelExpelIndication = 24,
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DomainMCSPDU_SendDataRequest = 25,
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DomainMCSPDU_SendDataIndication = 26,
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DomainMCSPDU_UniformSendDataRequest = 27,
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DomainMCSPDU_UniformSendDataIndication = 28,
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DomainMCSPDU_TokenGrabRequest = 29,
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DomainMCSPDU_TokenGrabConfirm = 30,
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DomainMCSPDU_TokenInhibitRequest = 31,
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DomainMCSPDU_TokenInhibitConfirm = 32,
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DomainMCSPDU_TokenGiveRequest = 33,
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DomainMCSPDU_TokenGiveIndication = 34,
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DomainMCSPDU_TokenGiveResponse = 35,
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DomainMCSPDU_TokenGiveConfirm = 36,
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DomainMCSPDU_TokenPleaseRequest = 37,
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DomainMCSPDU_TokenPleaseConfirm = 38,
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DomainMCSPDU_TokenReleaseRequest = 39,
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DomainMCSPDU_TokenReleaseConfirm = 40,
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DomainMCSPDU_TokenTestRequest = 41,
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DomainMCSPDU_TokenTestConfirm = 42,
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DomainMCSPDU_enum_length = 43
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} DomainMCSPDU;
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typedef struct
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{
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UINT32 maxChannelIds;
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UINT32 maxUserIds;
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UINT32 maxTokenIds;
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UINT32 numPriorities;
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UINT32 minThroughput;
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UINT32 maxHeight;
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UINT32 maxMCSPDUsize;
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UINT32 protocolVersion;
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} DomainParameters;
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struct rdp_mcs_channel
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{
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char Name[CHANNEL_NAME_LEN + 1];
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UINT32 options;
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UINT16 ChannelId;
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BOOL joined;
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void* handle;
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};
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typedef struct rdp_mcs_channel rdpMcsChannel;
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struct rdp_mcs
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{
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rdpTransport* transport;
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UINT16 userId;
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UINT16 baseChannelId;
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UINT16 messageChannelId;
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UINT32 flags;
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DomainParameters domainParameters;
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DomainParameters targetParameters;
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DomainParameters minimumParameters;
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DomainParameters maximumParameters;
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BOOL userChannelJoined;
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BOOL globalChannelJoined;
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BOOL messageChannelJoined;
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UINT32 channelCount;
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UINT32 channelMaxCount;
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rdpMcsChannel* channels;
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};
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#define MCS_SEND_DATA_HEADER_MAX_LENGTH 8
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#define MCS_TYPE_CONNECT_INITIAL 0x65
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#define MCS_TYPE_CONNECT_RESPONSE 0x66
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const char* mcs_domain_pdu_string(DomainMCSPDU pdu);
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BOOL mcs_server_apply_to_settings(const rdpMcs* msc, rdpSettings* settings);
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FREERDP_LOCAL BOOL mcs_recv_connect_initial(rdpMcs* mcs, wStream* s);
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FREERDP_LOCAL BOOL mcs_recv_connect_response(rdpMcs* mcs, wStream* s);
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FREERDP_LOCAL BOOL mcs_send_connect_response(rdpMcs* mcs);
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FREERDP_LOCAL BOOL mcs_recv_erect_domain_request(rdpMcs* mcs, wStream* s);
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FREERDP_LOCAL BOOL mcs_send_erect_domain_request(rdpMcs* mcs);
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FREERDP_LOCAL BOOL mcs_recv_attach_user_request(rdpMcs* mcs, wStream* s);
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FREERDP_LOCAL BOOL mcs_send_attach_user_request(rdpMcs* mcs);
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FREERDP_LOCAL BOOL mcs_recv_attach_user_confirm(rdpMcs* mcs, wStream* s);
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FREERDP_LOCAL BOOL mcs_send_attach_user_confirm(rdpMcs* mcs);
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FREERDP_LOCAL BOOL mcs_recv_channel_join_request(rdpMcs* mcs, const rdpSettings* settings,
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wStream* s, UINT16* channelId);
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FREERDP_LOCAL BOOL mcs_send_channel_join_request(rdpMcs* mcs, UINT16 channelId);
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FREERDP_LOCAL BOOL mcs_recv_channel_join_confirm(rdpMcs* mcs, wStream* s, UINT16* channelId);
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FREERDP_LOCAL BOOL mcs_send_channel_join_confirm(rdpMcs* mcs, UINT16 channelId);
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FREERDP_LOCAL BOOL mcs_recv_disconnect_provider_ultimatum(rdpMcs* mcs, wStream* s, int* reason);
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FREERDP_LOCAL BOOL mcs_send_disconnect_provider_ultimatum(rdpMcs* mcs);
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FREERDP_LOCAL BOOL mcs_write_domain_mcspdu_header(wStream* s, DomainMCSPDU domainMCSPDU,
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UINT16 length, BYTE options);
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FREERDP_LOCAL BOOL mcs_client_begin(rdpMcs* mcs);
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FREERDP_LOCAL rdpMcs* mcs_new(rdpTransport* transport);
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FREERDP_LOCAL void mcs_free(rdpMcs* mcs);
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#endif /* FREERDP_LIB_CORE_MCS_H */
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