4461144031
Autodetect packets can be transported either in TCP TPKT packets or be contained in multi-transport subheaders (transported on UDP). These changes do the appropriate modifications so that in further developments we can take the transport type in account when treating / writing these packets.
975 lines
36 KiB
C
975 lines
36 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* Auto-Detect PDUs
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*
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* Copyright 2014 Dell Software <Mike.McDonald@software.dell.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <freerdp/config.h>
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#include <winpr/crypto.h>
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#include <winpr/assert.h>
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#include "autodetect.h"
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#define TYPE_ID_AUTODETECT_REQUEST 0x00
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#define TYPE_ID_AUTODETECT_RESPONSE 0x01
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#define RDP_RTT_REQUEST_TYPE_CONTINUOUS 0x0001
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#define RDP_RTT_REQUEST_TYPE_CONNECTTIME 0x1001
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#define RDP_RTT_RESPONSE_TYPE 0x0000
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#define RDP_BW_START_REQUEST_TYPE_CONTINUOUS 0x0014
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#define RDP_BW_START_REQUEST_TYPE_TUNNEL 0x0114
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#define RDP_BW_START_REQUEST_TYPE_CONNECTTIME 0x1014
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#define RDP_BW_PAYLOAD_REQUEST_TYPE 0x0002
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#define RDP_BW_STOP_REQUEST_TYPE_CONNECTTIME 0x002B
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#define RDP_BW_STOP_REQUEST_TYPE_CONTINUOUS 0x0429
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#define RDP_BW_STOP_REQUEST_TYPE_TUNNEL 0x0629
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#define RDP_BW_RESULTS_RESPONSE_TYPE_CONNECTTIME 0x0003
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#define RDP_BW_RESULTS_RESPONSE_TYPE_CONTINUOUS 0x000B
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#define RDP_NETCHAR_SYNC_RESPONSE_TYPE 0x0018
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#define RDP_NETCHAR_RESULTS_0x0840 0x0840U
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#define RDP_NETCHAR_RESULTS_0x0880 0x0880U
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#define RDP_NETCHAR_RESULTS_0x08C0 0x08C0U
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typedef struct
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{
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UINT8 headerLength;
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UINT8 headerTypeId;
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UINT16 sequenceNumber;
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UINT16 requestType;
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} AUTODETECT_REQ_PDU;
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typedef struct
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{
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UINT8 headerLength;
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UINT8 headerTypeId;
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UINT16 sequenceNumber;
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UINT16 responseType;
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} AUTODETECT_RSP_PDU;
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static const char* autodetect_request_type_to_string(UINT32 requestType)
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{
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switch (requestType)
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{
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case RDP_RTT_RESPONSE_TYPE:
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return "RDP_RTT_RESPONSE_TYPE";
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case RDP_BW_RESULTS_RESPONSE_TYPE_CONNECTTIME:
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return "RDP_BW_RESULTS_RESPONSE_TYPE_CONNECTTIME";
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case RDP_BW_RESULTS_RESPONSE_TYPE_CONTINUOUS:
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return "RDP_BW_RESULTS_RESPONSE_TYPE_CONTINUOUS";
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case RDP_RTT_REQUEST_TYPE_CONTINUOUS:
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return "RDP_RTT_REQUEST_TYPE_CONTINUOUS";
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case RDP_RTT_REQUEST_TYPE_CONNECTTIME:
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return "RDP_RTT_REQUEST_TYPE_CONNECTTIME";
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case RDP_BW_START_REQUEST_TYPE_CONTINUOUS:
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return "RDP_BW_START_REQUEST_TYPE_CONTINUOUS";
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case RDP_BW_START_REQUEST_TYPE_TUNNEL:
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return "RDP_BW_START_REQUEST_TYPE_TUNNEL";
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case RDP_BW_START_REQUEST_TYPE_CONNECTTIME:
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return "RDP_BW_START_REQUEST_TYPE_CONNECTTIME";
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case RDP_BW_PAYLOAD_REQUEST_TYPE:
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return "RDP_BW_PAYLOAD_REQUEST_TYPE";
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case RDP_BW_STOP_REQUEST_TYPE_CONNECTTIME:
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return "RDP_BW_STOP_REQUEST_TYPE_CONNECTTIME";
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case RDP_BW_STOP_REQUEST_TYPE_CONTINUOUS:
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return "RDP_BW_STOP_REQUEST_TYPE_CONTINUOUS";
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case RDP_BW_STOP_REQUEST_TYPE_TUNNEL:
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return "RDP_BW_STOP_REQUEST_TYPE_TUNNEL";
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case RDP_NETCHAR_RESULTS_0x0840:
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return "RDP_NETCHAR_RESULTS_0x0840";
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case RDP_NETCHAR_RESULTS_0x0880:
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return "RDP_NETCHAR_RESULTS_0x0880";
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case RDP_NETCHAR_RESULTS_0x08C0:
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return "RDP_NETCHAR_RESULTS_0x08C0";
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default:
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return "UNKNOWN";
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}
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}
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static BOOL autodetect_send_rtt_measure_request(rdpAutoDetect* autodetect,
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RDP_TRANSPORT_TYPE transport, UINT16 sequenceNumber,
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UINT16 requestType)
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{
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wStream* s;
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WINPR_ASSERT(autodetect);
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WINPR_ASSERT(autodetect->context);
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s = rdp_message_channel_pdu_init(autodetect->context->rdp);
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if (!s)
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return FALSE;
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WLog_VRB(AUTODETECT_TAG, "sending RTT Measure Request PDU");
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Stream_Write_UINT8(s, 0x06); /* headerLength (1 byte) */
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Stream_Write_UINT8(s, TYPE_ID_AUTODETECT_REQUEST); /* headerTypeId (1 byte) */
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Stream_Write_UINT16(s, sequenceNumber); /* sequenceNumber (2 bytes) */
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Stream_Write_UINT16(s, requestType); /* requestType (2 bytes) */
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autodetect->rttMeasureStartTime = GetTickCount64();
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return rdp_send_message_channel_pdu(autodetect->context->rdp, s, SEC_AUTODETECT_REQ);
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}
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static BOOL autodetect_send_continuous_rtt_measure_request(rdpAutoDetect* autodetect,
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RDP_TRANSPORT_TYPE transport,
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UINT16 sequenceNumber)
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{
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return autodetect_send_rtt_measure_request(autodetect, transport, sequenceNumber,
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RDP_RTT_REQUEST_TYPE_CONTINUOUS);
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}
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BOOL autodetect_send_connecttime_rtt_measure_request(rdpAutoDetect* autodetect,
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RDP_TRANSPORT_TYPE transport,
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UINT16 sequenceNumber)
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{
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return autodetect_send_rtt_measure_request(autodetect, transport, sequenceNumber,
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RDP_RTT_REQUEST_TYPE_CONNECTTIME);
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}
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static BOOL autodetect_send_rtt_measure_response(rdpAutoDetect* autodetect, UINT16 sequenceNumber)
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{
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wStream* s;
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WINPR_ASSERT(autodetect);
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WINPR_ASSERT(autodetect->context);
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/* Send the response PDU to the server */
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s = rdp_message_channel_pdu_init(autodetect->context->rdp);
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if (!s)
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return FALSE;
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WLog_VRB(AUTODETECT_TAG, "sending RTT Measure Response PDU (seqNumber=0x%" PRIx16 ")",
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sequenceNumber);
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Stream_Write_UINT8(s, 0x06); /* headerLength (1 byte) */
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Stream_Write_UINT8(s, TYPE_ID_AUTODETECT_RESPONSE); /* headerTypeId (1 byte) */
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Stream_Write_UINT16(s, sequenceNumber); /* sequenceNumber (2 bytes) */
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Stream_Write_UINT16(s, RDP_RTT_RESPONSE_TYPE); /* responseType (1 byte) */
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return rdp_send_message_channel_pdu(autodetect->context->rdp, s, SEC_AUTODETECT_RSP);
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}
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static BOOL autodetect_send_bandwidth_measure_start(rdpAutoDetect* autodetect,
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RDP_TRANSPORT_TYPE transport,
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UINT16 sequenceNumber, UINT16 requestType)
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{
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wStream* s;
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WINPR_ASSERT(autodetect);
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WINPR_ASSERT(autodetect->context);
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s = rdp_message_channel_pdu_init(autodetect->context->rdp);
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if (!s)
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return FALSE;
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WLog_VRB(AUTODETECT_TAG, "sending Bandwidth Measure Start PDU(seqNumber=%" PRIu16 ")",
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sequenceNumber);
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Stream_Write_UINT8(s, 0x06); /* headerLength (1 byte) */
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Stream_Write_UINT8(s, TYPE_ID_AUTODETECT_REQUEST); /* headerTypeId (1 byte) */
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Stream_Write_UINT16(s, sequenceNumber); /* sequenceNumber (2 bytes) */
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Stream_Write_UINT16(s, requestType); /* requestType (2 bytes) */
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return rdp_send_message_channel_pdu(autodetect->context->rdp, s, SEC_AUTODETECT_REQ);
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}
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static BOOL autodetect_send_continuous_bandwidth_measure_start(rdpAutoDetect* autodetect,
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RDP_TRANSPORT_TYPE transport,
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UINT16 sequenceNumber)
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{
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return autodetect_send_bandwidth_measure_start(autodetect, transport, sequenceNumber,
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RDP_BW_START_REQUEST_TYPE_CONTINUOUS);
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}
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BOOL autodetect_send_connecttime_bandwidth_measure_start(rdpAutoDetect* autodetect,
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RDP_TRANSPORT_TYPE transport,
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UINT16 sequenceNumber)
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{
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return autodetect_send_bandwidth_measure_start(autodetect, transport, sequenceNumber,
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RDP_BW_START_REQUEST_TYPE_CONNECTTIME);
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}
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BOOL autodetect_send_bandwidth_measure_payload(rdpAutoDetect* autodetect,
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RDP_TRANSPORT_TYPE transport, UINT16 payloadLength,
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UINT16 sequenceNumber)
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{
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wStream* s;
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WINPR_ASSERT(autodetect);
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WINPR_ASSERT(autodetect->context);
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s = rdp_message_channel_pdu_init(autodetect->context->rdp);
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if (!s)
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return FALSE;
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WLog_VRB(AUTODETECT_TAG, "sending Bandwidth Measure Payload PDU -> payloadLength=%" PRIu16 "",
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payloadLength);
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/* 4-bytes aligned */
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payloadLength &= ~3;
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if (!Stream_EnsureRemainingCapacity(s, 8 + payloadLength))
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{
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WLog_ERR(AUTODETECT_TAG, "Failed to ensure %" PRIuz " bytes in stream",
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8ull + payloadLength);
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Stream_Release(s);
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return FALSE;
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}
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Stream_Write_UINT8(s, 0x08); /* headerLength (1 byte) */
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Stream_Write_UINT8(s, TYPE_ID_AUTODETECT_REQUEST); /* headerTypeId (1 byte) */
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Stream_Write_UINT16(s, sequenceNumber); /* sequenceNumber (2 bytes) */
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Stream_Write_UINT16(s, RDP_BW_PAYLOAD_REQUEST_TYPE); /* requestType (2 bytes) */
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Stream_Write_UINT16(s, payloadLength); /* payloadLength (2 bytes) */
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/* Random data (better measurement in case the line is compressed) */
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winpr_RAND(Stream_Pointer(s), payloadLength);
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Stream_Seek(s, payloadLength);
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return rdp_send_message_channel_pdu(autodetect->context->rdp, s, SEC_AUTODETECT_REQ);
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}
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static BOOL autodetect_send_bandwidth_measure_stop(rdpAutoDetect* autodetect,
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RDP_TRANSPORT_TYPE transport,
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UINT16 payloadLength, UINT16 sequenceNumber,
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UINT16 requestType)
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{
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wStream* s;
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WINPR_ASSERT(autodetect);
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WINPR_ASSERT(autodetect->context);
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s = rdp_message_channel_pdu_init(autodetect->context->rdp);
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if (!s)
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return FALSE;
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WLog_VRB(AUTODETECT_TAG, "sending Bandwidth Measure Stop PDU -> payloadLength=%" PRIu16 "",
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payloadLength);
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/* 4-bytes aligned */
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payloadLength &= ~3;
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Stream_Write_UINT8(s, requestType == RDP_BW_STOP_REQUEST_TYPE_CONNECTTIME
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? 0x08
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: 0x06); /* headerLength (1 byte) */
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Stream_Write_UINT8(s, TYPE_ID_AUTODETECT_REQUEST); /* headerTypeId (1 byte) */
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Stream_Write_UINT16(s, sequenceNumber); /* sequenceNumber (2 bytes) */
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Stream_Write_UINT16(s, requestType); /* requestType (2 bytes) */
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if (requestType == RDP_BW_STOP_REQUEST_TYPE_CONNECTTIME)
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{
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Stream_Write_UINT16(s, payloadLength); /* payloadLength (2 bytes) */
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if (payloadLength > 0)
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{
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if (!Stream_EnsureRemainingCapacity(s, payloadLength))
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{
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WLog_ERR(AUTODETECT_TAG, "Failed to ensure %" PRIuz " bytes in stream",
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payloadLength);
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Stream_Release(s);
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return FALSE;
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}
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/* Random data (better measurement in case the line is compressed) */
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winpr_RAND(Stream_Pointer(s), payloadLength);
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Stream_Seek(s, payloadLength);
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}
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}
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return rdp_send_message_channel_pdu(autodetect->context->rdp, s, SEC_AUTODETECT_REQ);
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}
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static BOOL autodetect_send_continuous_bandwidth_measure_stop(rdpAutoDetect* autodetect,
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RDP_TRANSPORT_TYPE transport,
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UINT16 sequenceNumber)
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{
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return autodetect_send_bandwidth_measure_stop(autodetect, transport, 0, sequenceNumber,
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RDP_BW_STOP_REQUEST_TYPE_CONTINUOUS);
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}
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BOOL autodetect_send_connecttime_bandwidth_measure_stop(rdpAutoDetect* autodetect,
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RDP_TRANSPORT_TYPE transport,
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UINT16 payloadLength, UINT16 sequenceNumber)
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{
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return autodetect_send_bandwidth_measure_stop(
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autodetect, transport, payloadLength, sequenceNumber, RDP_BW_STOP_REQUEST_TYPE_CONNECTTIME);
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}
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static BOOL autodetect_send_bandwidth_measure_results(rdpAutoDetect* autodetect,
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RDP_TRANSPORT_TYPE transport,
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UINT16 responseType, UINT16 sequenceNumber)
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{
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BOOL success = TRUE;
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wStream* s;
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UINT64 timeDelta = GetTickCount64();
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WINPR_ASSERT(autodetect);
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WINPR_ASSERT(autodetect->context);
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/* Compute the total time */
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if (autodetect->bandwidthMeasureStartTime > timeDelta)
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{
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WLog_WARN(AUTODETECT_TAG,
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"Invalid bandwidthMeasureStartTime %" PRIu64 " > current %" PRIu64
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", trimming to 0",
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autodetect->bandwidthMeasureStartTime, timeDelta);
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timeDelta = 0;
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}
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else
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timeDelta -= autodetect->bandwidthMeasureStartTime;
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/* Send the result PDU to the server */
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s = rdp_message_channel_pdu_init(autodetect->context->rdp);
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if (!s)
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return FALSE;
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WLog_VRB(AUTODETECT_TAG,
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"sending Bandwidth Measure Results PDU -> timeDelta=%" PRIu64 ", byteCount=%" PRIu32
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"",
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timeDelta, autodetect->bandwidthMeasureByteCount);
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Stream_Write_UINT8(s, 0x0E); /* headerLength (1 byte) */
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Stream_Write_UINT8(s, TYPE_ID_AUTODETECT_RESPONSE); /* headerTypeId (1 byte) */
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Stream_Write_UINT16(s, sequenceNumber); /* sequenceNumber (2 bytes) */
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Stream_Write_UINT16(s, responseType); /* responseType (1 byte) */
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Stream_Write_UINT32(s, (UINT32)MIN(timeDelta, UINT32_MAX)); /* timeDelta (4 bytes) */
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Stream_Write_UINT32(s, autodetect->bandwidthMeasureByteCount); /* byteCount (4 bytes) */
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IFCALLRET(autodetect->ClientBandwidthMeasureResult, success, autodetect, transport,
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responseType, sequenceNumber, (UINT32)MIN(timeDelta, UINT32_MAX),
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autodetect->bandwidthMeasureByteCount);
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if (!success)
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{
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WLog_ERR(AUTODETECT_TAG, "ClientBandwidthMeasureResult failed");
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return FALSE;
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}
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return rdp_send_message_channel_pdu(autodetect->context->rdp, s, SEC_AUTODETECT_RSP);
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}
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static BOOL autodetect_send_netchar_result(rdpAutoDetect* autodetect, RDP_TRANSPORT_TYPE transport,
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UINT16 sequenceNumber)
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{
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wStream* s;
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WINPR_ASSERT(autodetect);
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WINPR_ASSERT(autodetect->context);
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s = rdp_message_channel_pdu_init(autodetect->context->rdp);
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if (!s)
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return FALSE;
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WLog_VRB(AUTODETECT_TAG, "sending Bandwidth Network Characteristics Result PDU");
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if (autodetect->netCharBandwidth > 0)
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{
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Stream_Write_UINT8(s, 0x12); /* headerLength (1 byte) */
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Stream_Write_UINT8(s, TYPE_ID_AUTODETECT_REQUEST); /* headerTypeId (1 byte) */
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Stream_Write_UINT16(s, sequenceNumber); /* sequenceNumber (2 bytes) */
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Stream_Write_UINT16(s, RDP_NETCHAR_RESULTS_0x08C0); /* requestType (2 bytes) */
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Stream_Write_UINT32(s, autodetect->netCharBaseRTT); /* baseRTT (4 bytes) */
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Stream_Write_UINT32(s, autodetect->netCharBandwidth); /* bandwidth (4 bytes) */
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Stream_Write_UINT32(s, autodetect->netCharAverageRTT); /* averageRTT (4 bytes) */
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}
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else
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{
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Stream_Write_UINT8(s, 0x0E); /* headerLength (1 byte) */
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Stream_Write_UINT8(s, TYPE_ID_AUTODETECT_REQUEST); /* headerTypeId (1 byte) */
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Stream_Write_UINT16(s, sequenceNumber); /* sequenceNumber (2 bytes) */
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Stream_Write_UINT16(s, RDP_NETCHAR_RESULTS_0x0840); /* requestType (2 bytes) */
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Stream_Write_UINT32(s, autodetect->netCharBaseRTT); /* baseRTT (4 bytes) */
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Stream_Write_UINT32(s, autodetect->netCharAverageRTT); /* averageRTT (4 bytes) */
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}
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return rdp_send_message_channel_pdu(autodetect->context->rdp, s, SEC_AUTODETECT_REQ);
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}
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static BOOL autodetect_send_netchar_sync(rdpAutoDetect* autodetect, RDP_TRANSPORT_TYPE transport,
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UINT16 sequenceNumber)
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{
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wStream* s;
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WINPR_ASSERT(autodetect);
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WINPR_ASSERT(autodetect->context);
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WINPR_ASSERT(autodetect->context->rdp);
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/* Send the response PDU to the server */
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s = rdp_message_channel_pdu_init(autodetect->context->rdp);
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if (!s)
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return FALSE;
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WLog_VRB(AUTODETECT_TAG,
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"sending Network Characteristics Sync PDU -> bandwidth=%" PRIu32 ", rtt=%" PRIu32 "",
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autodetect->netCharBandwidth, autodetect->netCharAverageRTT);
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Stream_Write_UINT8(s, 0x0E); /* headerLength (1 byte) */
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Stream_Write_UINT8(s, TYPE_ID_AUTODETECT_RESPONSE); /* headerTypeId (1 byte) */
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Stream_Write_UINT16(s, sequenceNumber); /* sequenceNumber (2 bytes) */
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Stream_Write_UINT16(s, RDP_NETCHAR_SYNC_RESPONSE_TYPE); /* responseType (1 byte) */
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Stream_Write_UINT32(s, autodetect->netCharBandwidth); /* bandwidth (4 bytes) */
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Stream_Write_UINT32(s, autodetect->netCharAverageRTT); /* rtt (4 bytes) */
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return rdp_send_message_channel_pdu(autodetect->context->rdp, s, SEC_AUTODETECT_RSP);
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}
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static BOOL autodetect_recv_rtt_measure_request(rdpAutoDetect* autodetect,
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RDP_TRANSPORT_TYPE transport, wStream* s,
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const AUTODETECT_REQ_PDU* autodetectReqPdu)
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{
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WINPR_ASSERT(autodetect);
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WINPR_ASSERT(s);
|
|
WINPR_ASSERT(autodetectReqPdu);
|
|
|
|
if (autodetectReqPdu->headerLength != 0x06)
|
|
{
|
|
WLog_ERR(AUTODETECT_TAG, "autodetectReqPdu->headerLength != 0x06 [0x%02" PRIx8 "]",
|
|
autodetectReqPdu->headerLength);
|
|
return FALSE;
|
|
}
|
|
|
|
WLog_VRB(AUTODETECT_TAG, "received RTT Measure Request PDU");
|
|
/* Send a response to the server */
|
|
return autodetect_send_rtt_measure_response(autodetect, autodetectReqPdu->sequenceNumber);
|
|
}
|
|
|
|
static BOOL autodetect_recv_rtt_measure_response(rdpAutoDetect* autodetect,
|
|
RDP_TRANSPORT_TYPE transport, wStream* s,
|
|
const AUTODETECT_RSP_PDU* autodetectRspPdu)
|
|
{
|
|
BOOL success = TRUE;
|
|
|
|
WINPR_ASSERT(autodetect);
|
|
WINPR_ASSERT(autodetectRspPdu);
|
|
|
|
if (autodetectRspPdu->headerLength != 0x06)
|
|
{
|
|
WLog_ERR(AUTODETECT_TAG, "autodetectRspPdu->headerLength != 0x06 [0x%02" PRIx8 "]",
|
|
autodetectRspPdu->headerLength);
|
|
return FALSE;
|
|
}
|
|
|
|
WLog_VRB(AUTODETECT_TAG, "received RTT Measure Response PDU");
|
|
autodetect->netCharAverageRTT =
|
|
(UINT32)MIN(GetTickCount64() - autodetect->rttMeasureStartTime, UINT32_MAX);
|
|
|
|
if (autodetect->netCharBaseRTT == 0 ||
|
|
autodetect->netCharBaseRTT > autodetect->netCharAverageRTT)
|
|
autodetect->netCharBaseRTT = autodetect->netCharAverageRTT;
|
|
|
|
IFCALLRET(autodetect->RTTMeasureResponse, success, autodetect, transport,
|
|
autodetectRspPdu->sequenceNumber);
|
|
if (!success)
|
|
WLog_WARN(AUTODETECT_TAG, "RTTMeasureResponse failed");
|
|
return success;
|
|
}
|
|
|
|
static BOOL autodetect_recv_bandwidth_measure_start(rdpAutoDetect* autodetect,
|
|
RDP_TRANSPORT_TYPE transport, wStream* s,
|
|
const AUTODETECT_REQ_PDU* autodetectReqPdu)
|
|
{
|
|
WINPR_ASSERT(autodetect);
|
|
WINPR_ASSERT(s);
|
|
WINPR_ASSERT(autodetectReqPdu);
|
|
|
|
if (autodetectReqPdu->headerLength != 0x06)
|
|
{
|
|
WLog_ERR(AUTODETECT_TAG, "autodetectReqPdu->headerLength != 0x06 [0x%02" PRIx8 "]",
|
|
autodetectReqPdu->headerLength);
|
|
return FALSE;
|
|
}
|
|
|
|
WLog_VRB(AUTODETECT_TAG, "received Bandwidth Measure Start PDU - time=%" PRIu64 "",
|
|
GetTickCount64());
|
|
/* Initialize bandwidth measurement parameters */
|
|
autodetect->bandwidthMeasureStartTime = GetTickCount64();
|
|
autodetect->bandwidthMeasureByteCount = 0;
|
|
|
|
/* Continuous Auto-Detection: mark the start of the measurement */
|
|
if (autodetectReqPdu->requestType == RDP_BW_START_REQUEST_TYPE_CONTINUOUS)
|
|
{
|
|
autodetect->bandwidthMeasureStarted = TRUE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static BOOL autodetect_recv_bandwidth_measure_payload(rdpAutoDetect* autodetect,
|
|
RDP_TRANSPORT_TYPE transport, wStream* s,
|
|
const AUTODETECT_REQ_PDU* autodetectReqPdu)
|
|
{
|
|
UINT16 payloadLength;
|
|
|
|
WINPR_ASSERT(autodetect);
|
|
WINPR_ASSERT(s);
|
|
WINPR_ASSERT(autodetectReqPdu);
|
|
|
|
if (autodetectReqPdu->headerLength != 0x08)
|
|
{
|
|
WLog_ERR(AUTODETECT_TAG, "autodetectReqPdu->headerLength != 0x08 [0x%02" PRIx8 "]",
|
|
autodetectReqPdu->headerLength);
|
|
return FALSE;
|
|
}
|
|
|
|
if (!Stream_CheckAndLogRequiredLength(AUTODETECT_TAG, s, 2))
|
|
return FALSE;
|
|
|
|
Stream_Read_UINT16(s, payloadLength); /* payloadLength (2 bytes) */
|
|
if (!Stream_CheckAndLogRequiredLength(AUTODETECT_TAG, s, payloadLength))
|
|
return FALSE;
|
|
Stream_Seek(s, payloadLength);
|
|
|
|
WLog_DBG(AUTODETECT_TAG, "received Bandwidth Measure Payload PDU -> payloadLength=%" PRIu16 "",
|
|
payloadLength);
|
|
/* Add the payload length to the bandwidth measurement parameters */
|
|
autodetect->bandwidthMeasureByteCount += payloadLength;
|
|
return TRUE;
|
|
}
|
|
|
|
static BOOL autodetect_recv_bandwidth_measure_stop(rdpAutoDetect* autodetect,
|
|
RDP_TRANSPORT_TYPE transport, wStream* s,
|
|
const AUTODETECT_REQ_PDU* autodetectReqPdu)
|
|
{
|
|
UINT16 payloadLength;
|
|
UINT16 responseType;
|
|
|
|
WINPR_ASSERT(autodetect);
|
|
WINPR_ASSERT(s);
|
|
WINPR_ASSERT(autodetectReqPdu);
|
|
|
|
if (autodetectReqPdu->requestType == RDP_BW_STOP_REQUEST_TYPE_CONNECTTIME)
|
|
{
|
|
if (autodetectReqPdu->headerLength != 0x08)
|
|
{
|
|
WLog_ERR(AUTODETECT_TAG, "autodetectReqPdu->headerLength != 0x08 [0x%02" PRIx8 "]",
|
|
autodetectReqPdu->headerLength);
|
|
return FALSE;
|
|
}
|
|
|
|
if (!Stream_CheckAndLogRequiredLength(AUTODETECT_TAG, s, 2))
|
|
return FALSE;
|
|
|
|
Stream_Read_UINT16(s, payloadLength); /* payloadLength (2 bytes) */
|
|
}
|
|
else
|
|
{
|
|
if (autodetectReqPdu->headerLength != 0x06)
|
|
{
|
|
WLog_ERR(AUTODETECT_TAG, "autodetectReqPdu->headerLength != 0x06 [0x%02" PRIx8 "]",
|
|
autodetectReqPdu->headerLength);
|
|
return FALSE;
|
|
}
|
|
|
|
payloadLength = 0;
|
|
}
|
|
|
|
if (!Stream_CheckAndLogRequiredLength(AUTODETECT_TAG, s, payloadLength))
|
|
return FALSE;
|
|
Stream_Seek(s, payloadLength);
|
|
|
|
WLog_VRB(AUTODETECT_TAG, "received Bandwidth Measure Stop PDU -> payloadLength=%" PRIu16 "",
|
|
payloadLength);
|
|
/* Add the payload length to the bandwidth measurement parameters */
|
|
autodetect->bandwidthMeasureByteCount += payloadLength;
|
|
|
|
/* Continuous Auto-Detection: mark the stop of the measurement */
|
|
if (autodetectReqPdu->requestType == RDP_BW_STOP_REQUEST_TYPE_CONTINUOUS)
|
|
{
|
|
autodetect->bandwidthMeasureStarted = FALSE;
|
|
}
|
|
|
|
/* Send a response the server */
|
|
responseType = autodetectReqPdu->requestType == RDP_BW_STOP_REQUEST_TYPE_CONNECTTIME
|
|
? RDP_BW_RESULTS_RESPONSE_TYPE_CONNECTTIME
|
|
: RDP_BW_RESULTS_RESPONSE_TYPE_CONTINUOUS;
|
|
IFCALL(autodetect->BandwidthMeasureResults, autodetect, transport, responseType,
|
|
autodetectReqPdu->sequenceNumber);
|
|
return autodetect_send_bandwidth_measure_results(autodetect, transport, responseType,
|
|
autodetectReqPdu->sequenceNumber);
|
|
}
|
|
|
|
static BOOL autodetect_recv_bandwidth_measure_results(rdpAutoDetect* autodetect,
|
|
RDP_TRANSPORT_TYPE transport, wStream* s,
|
|
const AUTODETECT_RSP_PDU* autodetectRspPdu)
|
|
{
|
|
BOOL success = TRUE;
|
|
|
|
WINPR_ASSERT(autodetect);
|
|
WINPR_ASSERT(s);
|
|
WINPR_ASSERT(autodetectRspPdu);
|
|
|
|
if (autodetectRspPdu->headerLength != 0x0E)
|
|
{
|
|
WLog_ERR(AUTODETECT_TAG, "autodetectRspPdu->headerLength != 0x0E [0x%02" PRIx8 "]",
|
|
autodetectRspPdu->headerLength);
|
|
return FALSE;
|
|
}
|
|
|
|
WLog_VRB(AUTODETECT_TAG, "received Bandwidth Measure Results PDU");
|
|
if (!Stream_CheckAndLogRequiredLength(AUTODETECT_TAG, s, 8))
|
|
return FALSE;
|
|
Stream_Read_UINT32(s, autodetect->bandwidthMeasureTimeDelta); /* timeDelta (4 bytes) */
|
|
Stream_Read_UINT32(s, autodetect->bandwidthMeasureByteCount); /* byteCount (4 bytes) */
|
|
|
|
if (autodetect->bandwidthMeasureTimeDelta > 0)
|
|
autodetect->netCharBandwidth = (UINT32)MIN(autodetect->bandwidthMeasureByteCount * 8ULL /
|
|
autodetect->bandwidthMeasureTimeDelta,
|
|
UINT32_MAX);
|
|
else
|
|
autodetect->netCharBandwidth = 0;
|
|
|
|
IFCALLRET(autodetect->BandwidthMeasureResults, success, autodetect, transport,
|
|
autodetectRspPdu->responseType, autodetectRspPdu->sequenceNumber);
|
|
if (!success)
|
|
WLog_WARN(AUTODETECT_TAG, "BandwidthMeasureResults failed");
|
|
return success;
|
|
}
|
|
|
|
static BOOL autodetect_recv_netchar_result(rdpAutoDetect* autodetect, RDP_TRANSPORT_TYPE transport,
|
|
wStream* s, const AUTODETECT_RSP_PDU* autodetectRspPdu)
|
|
{
|
|
BOOL success = TRUE;
|
|
|
|
WINPR_ASSERT(autodetect);
|
|
WINPR_ASSERT(s);
|
|
WINPR_ASSERT(autodetectRspPdu);
|
|
|
|
switch (autodetectRspPdu->responseType)
|
|
{
|
|
case RDP_NETCHAR_SYNC_RESPONSE_TYPE:
|
|
/* bandwidth and averageRTT fields are present (baseRTT field is not) */
|
|
if (autodetectRspPdu->headerLength != 0x0E)
|
|
{
|
|
WLog_ERR(AUTODETECT_TAG, "autodetectRspPdu->headerLength != 0x0E [0x%02" PRIx8 "]",
|
|
autodetectRspPdu->headerLength);
|
|
return FALSE;
|
|
}
|
|
if (!Stream_CheckAndLogRequiredLength(AUTODETECT_TAG, s, 8))
|
|
return FALSE;
|
|
|
|
Stream_Read_UINT32(s, autodetect->netCharBandwidth); /* bandwidth (4 bytes) */
|
|
Stream_Read_UINT32(s, autodetect->netCharAverageRTT); /* averageRTT (4 bytes) */
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
WLog_VRB(AUTODETECT_TAG,
|
|
"received Network Characteristics Result PDU -> baseRTT=%" PRIu32
|
|
", bandwidth=%" PRIu32 ", averageRTT=%" PRIu32 "",
|
|
autodetect->netCharBaseRTT, autodetect->netCharBandwidth,
|
|
autodetect->netCharAverageRTT);
|
|
|
|
IFCALLRET(autodetect->NetworkCharacteristicsResult, success, autodetect, transport,
|
|
autodetectRspPdu->sequenceNumber);
|
|
if (!success)
|
|
WLog_WARN(AUTODETECT_TAG, "NetworkCharacteristicsResult failed");
|
|
return success;
|
|
}
|
|
|
|
static BOOL autodetect_recv_netchar_request(rdpAutoDetect* autodetect, RDP_TRANSPORT_TYPE transport,
|
|
wStream* s, const AUTODETECT_REQ_PDU* autodetectReqPdu)
|
|
{
|
|
BOOL success = TRUE;
|
|
|
|
WINPR_ASSERT(autodetect);
|
|
WINPR_ASSERT(s);
|
|
WINPR_ASSERT(autodetectReqPdu);
|
|
|
|
switch (autodetectReqPdu->requestType)
|
|
{
|
|
case RDP_NETCHAR_RESULTS_0x0840:
|
|
|
|
/* baseRTT and averageRTT fields are present (bandwidth field is not) */
|
|
if (autodetectReqPdu->headerLength != 0x0E)
|
|
{
|
|
WLog_ERR(AUTODETECT_TAG, "autodetectReqPdu->headerLength != 0x0E [0x%02" PRIx8 "]",
|
|
autodetectReqPdu->headerLength);
|
|
return FALSE;
|
|
}
|
|
if (!Stream_CheckAndLogRequiredLength(AUTODETECT_TAG, s, 8))
|
|
return FALSE;
|
|
|
|
Stream_Read_UINT32(s, autodetect->netCharBaseRTT); /* baseRTT (4 bytes) */
|
|
Stream_Read_UINT32(s, autodetect->netCharAverageRTT); /* averageRTT (4 bytes) */
|
|
break;
|
|
|
|
case RDP_NETCHAR_RESULTS_0x0880:
|
|
|
|
/* bandwidth and averageRTT fields are present (baseRTT field is not) */
|
|
if (autodetectReqPdu->headerLength != 0x0E)
|
|
{
|
|
WLog_ERR(AUTODETECT_TAG, "autodetectReqPdu->headerLength != 0x0E [0x%02" PRIx8 "]",
|
|
autodetectReqPdu->headerLength);
|
|
return FALSE;
|
|
}
|
|
if (!Stream_CheckAndLogRequiredLength(AUTODETECT_TAG, s, 8))
|
|
return FALSE;
|
|
|
|
Stream_Read_UINT32(s, autodetect->netCharBandwidth); /* bandwidth (4 bytes) */
|
|
Stream_Read_UINT32(s, autodetect->netCharAverageRTT); /* averageRTT (4 bytes) */
|
|
break;
|
|
|
|
case RDP_NETCHAR_RESULTS_0x08C0:
|
|
|
|
/* baseRTT, bandwidth, and averageRTT fields are present */
|
|
if (autodetectReqPdu->headerLength != 0x12)
|
|
{
|
|
WLog_ERR(AUTODETECT_TAG, "autodetectReqPdu->headerLength != 0x012 [0x%02" PRIx8 "]",
|
|
autodetectReqPdu->headerLength);
|
|
return FALSE;
|
|
}
|
|
if (!Stream_CheckAndLogRequiredLength(AUTODETECT_TAG, s, 12))
|
|
return FALSE;
|
|
|
|
Stream_Read_UINT32(s, autodetect->netCharBaseRTT); /* baseRTT (4 bytes) */
|
|
Stream_Read_UINT32(s, autodetect->netCharBandwidth); /* bandwidth (4 bytes) */
|
|
Stream_Read_UINT32(s, autodetect->netCharAverageRTT); /* averageRTT (4 bytes) */
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
WLog_VRB(AUTODETECT_TAG,
|
|
"received Network Characteristics Result PDU -> baseRTT=%" PRIu32
|
|
", bandwidth=%" PRIu32 ", averageRTT=%" PRIu32 "",
|
|
autodetect->netCharBaseRTT, autodetect->netCharBandwidth,
|
|
autodetect->netCharAverageRTT);
|
|
|
|
IFCALLRET(autodetect->NetworkCharacteristicsResult, success, autodetect, transport,
|
|
autodetectReqPdu->sequenceNumber);
|
|
if (!success)
|
|
WLog_WARN(AUTODETECT_TAG, "NetworkCharacteristicsResult failed");
|
|
return success;
|
|
}
|
|
|
|
state_run_t autodetect_recv_request_packet(rdpAutoDetect* autodetect, RDP_TRANSPORT_TYPE transport,
|
|
wStream* s)
|
|
{
|
|
AUTODETECT_REQ_PDU autodetectReqPdu = { 0 };
|
|
const rdpSettings* settings;
|
|
BOOL success = FALSE;
|
|
|
|
WINPR_ASSERT(autodetect);
|
|
WINPR_ASSERT(autodetect->context);
|
|
|
|
settings = autodetect->context->settings;
|
|
WINPR_ASSERT(settings);
|
|
|
|
if (!Stream_CheckAndLogRequiredLength(AUTODETECT_TAG, s, 6))
|
|
return STATE_RUN_FAILED;
|
|
|
|
Stream_Read_UINT8(s, autodetectReqPdu.headerLength); /* headerLength (1 byte) */
|
|
Stream_Read_UINT8(s, autodetectReqPdu.headerTypeId); /* headerTypeId (1 byte) */
|
|
Stream_Read_UINT16(s, autodetectReqPdu.sequenceNumber); /* sequenceNumber (2 bytes) */
|
|
Stream_Read_UINT16(s, autodetectReqPdu.requestType); /* requestType (2 bytes) */
|
|
WLog_VRB(AUTODETECT_TAG,
|
|
"rdp_recv_autodetect_request_packet: headerLength=%" PRIu8 ", headerTypeId=%" PRIu8
|
|
", sequenceNumber=%" PRIu16 ", requestType=%04" PRIx16 "",
|
|
autodetectReqPdu.headerLength, autodetectReqPdu.headerTypeId,
|
|
autodetectReqPdu.sequenceNumber, autodetectReqPdu.requestType);
|
|
|
|
if (!freerdp_settings_get_bool(settings, FreeRDP_NetworkAutoDetect))
|
|
{
|
|
WLog_WARN(AUTODETECT_TAG,
|
|
"Received a [MS-RDPBCGR] 2.2.14.1.1 RTT Measure Request (RDP_RTT_REQUEST) [%s] "
|
|
"message but support was not enabled",
|
|
autodetect_request_type_to_string(autodetectReqPdu.requestType));
|
|
}
|
|
|
|
if (autodetectReqPdu.headerTypeId != TYPE_ID_AUTODETECT_REQUEST)
|
|
{
|
|
WLog_ERR(AUTODETECT_TAG,
|
|
"Received a [MS-RDPBCGR] 2.2.14.1.1 RTT Measure Request (RDP_RTT_REQUEST) [%s] "
|
|
"message with invalid headerTypeId=0x%04" PRIx16,
|
|
autodetect_request_type_to_string(autodetectReqPdu.requestType),
|
|
autodetectReqPdu.headerTypeId);
|
|
goto fail;
|
|
}
|
|
|
|
IFCALL(autodetect->RequestReceived, autodetect, transport, autodetectReqPdu.requestType,
|
|
autodetectReqPdu.sequenceNumber);
|
|
switch (autodetectReqPdu.requestType)
|
|
{
|
|
case RDP_RTT_REQUEST_TYPE_CONTINUOUS:
|
|
case RDP_RTT_REQUEST_TYPE_CONNECTTIME:
|
|
/* RTT Measure Request (RDP_RTT_REQUEST) - MS-RDPBCGR 2.2.14.1.1 */
|
|
success =
|
|
autodetect_recv_rtt_measure_request(autodetect, transport, s, &autodetectReqPdu);
|
|
break;
|
|
|
|
case RDP_BW_START_REQUEST_TYPE_CONTINUOUS:
|
|
case RDP_BW_START_REQUEST_TYPE_TUNNEL:
|
|
case RDP_BW_START_REQUEST_TYPE_CONNECTTIME:
|
|
/* Bandwidth Measure Start (RDP_BW_START) - MS-RDPBCGR 2.2.14.1.2 */
|
|
success = autodetect_recv_bandwidth_measure_start(autodetect, transport, s,
|
|
&autodetectReqPdu);
|
|
break;
|
|
|
|
case RDP_BW_PAYLOAD_REQUEST_TYPE:
|
|
/* Bandwidth Measure Payload (RDP_BW_PAYLOAD) - MS-RDPBCGR 2.2.14.1.3 */
|
|
success = autodetect_recv_bandwidth_measure_payload(autodetect, transport, s,
|
|
&autodetectReqPdu);
|
|
break;
|
|
|
|
case RDP_BW_STOP_REQUEST_TYPE_CONNECTTIME:
|
|
case RDP_BW_STOP_REQUEST_TYPE_CONTINUOUS:
|
|
case RDP_BW_STOP_REQUEST_TYPE_TUNNEL:
|
|
/* Bandwidth Measure Stop (RDP_BW_STOP) - MS-RDPBCGR 2.2.14.1.4 */
|
|
success =
|
|
autodetect_recv_bandwidth_measure_stop(autodetect, transport, s, &autodetectReqPdu);
|
|
break;
|
|
|
|
case RDP_NETCHAR_RESULTS_0x0840:
|
|
case RDP_NETCHAR_RESULTS_0x0880:
|
|
case RDP_NETCHAR_RESULTS_0x08C0:
|
|
/* Network Characteristics Result (RDP_NETCHAR_RESULT) - MS-RDPBCGR 2.2.14.1.5 */
|
|
success = autodetect_recv_netchar_request(autodetect, transport, s, &autodetectReqPdu);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
fail:
|
|
if (success)
|
|
autodetect->state = AUTODETECT_STATE_REQUEST;
|
|
else
|
|
autodetect->state = AUTODETECT_STATE_FAIL;
|
|
return success ? STATE_RUN_SUCCESS : STATE_RUN_FAILED;
|
|
}
|
|
|
|
state_run_t autodetect_recv_response_packet(rdpAutoDetect* autodetect, RDP_TRANSPORT_TYPE transport,
|
|
wStream* s)
|
|
{
|
|
AUTODETECT_RSP_PDU autodetectRspPdu = { 0 };
|
|
const rdpSettings* settings;
|
|
BOOL success = FALSE;
|
|
|
|
WINPR_ASSERT(autodetect);
|
|
WINPR_ASSERT(autodetect->context);
|
|
WINPR_ASSERT(s);
|
|
|
|
settings = autodetect->context->settings;
|
|
WINPR_ASSERT(settings);
|
|
|
|
if (!Stream_CheckAndLogRequiredLength(AUTODETECT_TAG, s, 6))
|
|
goto fail;
|
|
|
|
Stream_Read_UINT8(s, autodetectRspPdu.headerLength); /* headerLength (1 byte) */
|
|
Stream_Read_UINT8(s, autodetectRspPdu.headerTypeId); /* headerTypeId (1 byte) */
|
|
Stream_Read_UINT16(s, autodetectRspPdu.sequenceNumber); /* sequenceNumber (2 bytes) */
|
|
Stream_Read_UINT16(s, autodetectRspPdu.responseType); /* responseType (2 bytes) */
|
|
WLog_VRB(AUTODETECT_TAG,
|
|
"rdp_recv_autodetect_response_packet: headerLength=%" PRIu8 ", headerTypeId=%" PRIu8
|
|
", sequenceNumber=%" PRIu16 ", requestType=%04" PRIx16 "",
|
|
autodetectRspPdu.headerLength, autodetectRspPdu.headerTypeId,
|
|
autodetectRspPdu.sequenceNumber, autodetectRspPdu.responseType);
|
|
|
|
if (!freerdp_settings_get_bool(settings, FreeRDP_NetworkAutoDetect))
|
|
{
|
|
WLog_WARN(AUTODETECT_TAG,
|
|
"Received a [MS-RDPBCGR] 2.2.14.2.1 RTT Measure Response (RDP_RTT_RESPONSE) [%s] "
|
|
"message but support was not enabled",
|
|
autodetect_request_type_to_string(autodetectRspPdu.responseType));
|
|
}
|
|
|
|
if (autodetectRspPdu.headerTypeId != TYPE_ID_AUTODETECT_RESPONSE)
|
|
{
|
|
WLog_ERR(AUTODETECT_TAG,
|
|
"Received a [MS-RDPBCGR] 2.2.14.2.1 RTT Measure Response (RDP_RTT_RESPONSE) [%s] "
|
|
"message with invalid headerTypeId=0x%04" PRIx16,
|
|
autodetect_request_type_to_string(autodetectRspPdu.responseType),
|
|
autodetectRspPdu.headerTypeId);
|
|
goto fail;
|
|
}
|
|
|
|
IFCALL(autodetect->ResponseReceived, autodetect, transport, autodetectRspPdu.responseType,
|
|
autodetectRspPdu.sequenceNumber);
|
|
switch (autodetectRspPdu.responseType)
|
|
{
|
|
case RDP_RTT_RESPONSE_TYPE:
|
|
/* RTT Measure Response (RDP_RTT_RESPONSE) - MS-RDPBCGR 2.2.14.2.1 */
|
|
success =
|
|
autodetect_recv_rtt_measure_response(autodetect, transport, s, &autodetectRspPdu);
|
|
break;
|
|
|
|
case RDP_BW_RESULTS_RESPONSE_TYPE_CONNECTTIME:
|
|
case RDP_BW_RESULTS_RESPONSE_TYPE_CONTINUOUS:
|
|
/* Bandwidth Measure Results (RDP_BW_RESULTS) - MS-RDPBCGR 2.2.14.2.2 */
|
|
success = autodetect_recv_bandwidth_measure_results(autodetect, transport, s,
|
|
&autodetectRspPdu);
|
|
break;
|
|
|
|
case RDP_NETCHAR_SYNC_RESPONSE_TYPE:
|
|
success = autodetect_recv_netchar_result(autodetect, transport, s, &autodetectRspPdu);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
fail:
|
|
if (success)
|
|
{
|
|
if (autodetectRspPdu.responseType == RDP_BW_RESULTS_RESPONSE_TYPE_CONNECTTIME)
|
|
autodetect->state = AUTODETECT_STATE_COMPLETE;
|
|
else
|
|
autodetect->state = AUTODETECT_STATE_RESPONSE;
|
|
}
|
|
else
|
|
autodetect->state = AUTODETECT_STATE_FAIL;
|
|
|
|
return success ? STATE_RUN_SUCCESS : STATE_RUN_FAILED;
|
|
}
|
|
|
|
rdpAutoDetect* autodetect_new(rdpContext* context)
|
|
{
|
|
rdpAutoDetect* autoDetect = (rdpAutoDetect*)calloc(1, sizeof(rdpAutoDetect));
|
|
if (!autoDetect)
|
|
return NULL;
|
|
autoDetect->context = context;
|
|
|
|
return autoDetect;
|
|
}
|
|
|
|
void autodetect_free(rdpAutoDetect* autoDetect)
|
|
{
|
|
free(autoDetect);
|
|
}
|
|
|
|
void autodetect_register_server_callbacks(rdpAutoDetect* autodetect)
|
|
{
|
|
WINPR_ASSERT(autodetect);
|
|
|
|
autodetect->RTTMeasureRequest = autodetect_send_continuous_rtt_measure_request;
|
|
autodetect->BandwidthMeasureStart = autodetect_send_continuous_bandwidth_measure_start;
|
|
autodetect->BandwidthMeasureStop = autodetect_send_continuous_bandwidth_measure_stop;
|
|
autodetect->NetworkCharacteristicsResult = autodetect_send_netchar_result;
|
|
}
|
|
|
|
AUTODETECT_STATE autodetect_get_state(rdpAutoDetect* autodetect)
|
|
{
|
|
WINPR_ASSERT(autodetect);
|
|
return autodetect->state;
|
|
}
|
|
|
|
rdpAutoDetect* autodetect_get(rdpContext* context)
|
|
{
|
|
WINPR_ASSERT(context);
|
|
WINPR_ASSERT(context->rdp);
|
|
return context->rdp->autodetect;
|
|
}
|