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73cdcdfe09
FreeRDP/libfreerdp/core/gateway/rts_signature.c
akallabeth 73cdcdfe09
Logging and parser fixes (#7796) 
* Fixed remdesk settings pointer

* Fixed sign warnings in display_write_monitor_layout_pdu

* Use freerdp_abort_connect_context and freerdp_shall_disconnect_context

* Added and updates settings

* info assert/dynamic timezone

* mcs assert/log/flags

* Fixed and added assertions for wStream

* Unified stream length checks

* Added new function to check for lenght and log
* Replace all usages with this new function

* Cleaned up PER, added parser logging

* Cleaned up BER, added parser logging

* log messages

* Modified Stream_CheckAndLogRequiredLengthEx

* Allow custom format and options
* Add Stream_CheckAndLogRequiredLengthExVa for prepared va_list

* Improved Stream_CheckAndLogRequiredLength

* Now have log level adjustable
* Added function equivalents for existing logger
* Added a backtrace in case of a failure is detected

* Fixed public API input checks
2022-04-19 14:29:17 +02:00

406 lines
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/**
* FreeRDP: A Remote Desktop Protocol Implementation
* Request To Send (RTS) PDU Signatures
*
* Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <winpr/assert.h>
#include <winpr/stream.h>
#include <freerdp/log.h>
#include "rts_signature.h"
#define TAG FREERDP_TAG("core.gateway.rts")
const RtsPduSignature RTS_PDU_CONN_A1_SIGNATURE = {
RTS_FLAG_NONE,
4,
{ RTS_CMD_VERSION, RTS_CMD_COOKIE, RTS_CMD_COOKIE, RTS_CMD_RECEIVE_WINDOW_SIZE, 0, 0, 0, 0 }
};
const RtsPduSignature RTS_PDU_CONN_A2_SIGNATURE = { RTS_FLAG_OUT_CHANNEL,
5,
{ RTS_CMD_VERSION, RTS_CMD_COOKIE,
RTS_CMD_COOKIE, RTS_CMD_CHANNEL_LIFETIME,
RTS_CMD_RECEIVE_WINDOW_SIZE, 0, 0, 0 } };
const RtsPduSignature RTS_PDU_CONN_A3_SIGNATURE = {
RTS_FLAG_NONE, 1, { RTS_CMD_CONNECTION_TIMEOUT, 0, 0, 0, 0, 0, 0, 0 }
};
const RtsPduSignature RTS_PDU_CONN_B1_SIGNATURE = {
RTS_FLAG_NONE,
6,
{ RTS_CMD_VERSION, RTS_CMD_COOKIE, RTS_CMD_COOKIE, RTS_CMD_CHANNEL_LIFETIME,
RTS_CMD_CLIENT_KEEPALIVE, RTS_CMD_ASSOCIATION_GROUP_ID, 0, 0 }
};
const RtsPduSignature RTS_PDU_CONN_B2_SIGNATURE = {
RTS_FLAG_IN_CHANNEL,
7,
{ RTS_CMD_VERSION, RTS_CMD_COOKIE, RTS_CMD_COOKIE, RTS_CMD_RECEIVE_WINDOW_SIZE,
RTS_CMD_CONNECTION_TIMEOUT, RTS_CMD_ASSOCIATION_GROUP_ID, RTS_CMD_CLIENT_ADDRESS, 0 }
};
const RtsPduSignature RTS_PDU_CONN_B3_SIGNATURE = {
RTS_FLAG_NONE, 2, { RTS_CMD_RECEIVE_WINDOW_SIZE, RTS_CMD_VERSION, 0, 0, 0, 0, 0, 0 }
};
const RtsPduSignature RTS_PDU_CONN_C1_SIGNATURE = { RTS_FLAG_NONE,
3,
{ RTS_CMD_VERSION, RTS_CMD_RECEIVE_WINDOW_SIZE,
RTS_CMD_CONNECTION_TIMEOUT, 0, 0, 0, 0, 0 } };
const RtsPduSignature RTS_PDU_CONN_C2_SIGNATURE = { RTS_FLAG_NONE,
3,
{ RTS_CMD_VERSION, RTS_CMD_RECEIVE_WINDOW_SIZE,
RTS_CMD_CONNECTION_TIMEOUT, 0, 0, 0, 0, 0 } };
const RtsPduSignature RTS_PDU_IN_R1_A1_SIGNATURE = {
RTS_FLAG_RECYCLE_CHANNEL,
4,
{ RTS_CMD_VERSION, RTS_CMD_COOKIE, RTS_CMD_COOKIE, RTS_CMD_COOKIE, 0, 0, 0, 0 }
};
const RtsPduSignature RTS_PDU_IN_R1_A2_SIGNATURE = {
RTS_FLAG_NONE,
4,
{ RTS_CMD_VERSION, RTS_CMD_COOKIE, RTS_CMD_COOKIE, RTS_CMD_COOKIE, RTS_CMD_RECEIVE_WINDOW_SIZE,
RTS_CMD_CONNECTION_TIMEOUT, 0, 0 }
};
const RtsPduSignature RTS_PDU_IN_R1_A3_SIGNATURE = { RTS_FLAG_NONE,
4,
{ RTS_CMD_DESTINATION, RTS_CMD_VERSION,
RTS_CMD_RECEIVE_WINDOW_SIZE,
RTS_CMD_CONNECTION_TIMEOUT, 0, 0, 0, 0 } };
const RtsPduSignature RTS_PDU_IN_R1_A4_SIGNATURE = { RTS_FLAG_NONE,
4,
{ RTS_CMD_DESTINATION, RTS_CMD_VERSION,
RTS_CMD_RECEIVE_WINDOW_SIZE,
RTS_CMD_CONNECTION_TIMEOUT, 0, 0, 0, 0 } };
const RtsPduSignature RTS_PDU_IN_R1_A5_SIGNATURE = { RTS_FLAG_NONE,
1,
{ RTS_CMD_COOKIE, 0, 0, 0, 0, 0, 0, 0 } };
const RtsPduSignature RTS_PDU_IN_R1_A6_SIGNATURE = { RTS_FLAG_NONE,
1,
{ RTS_CMD_COOKIE, 0, 0, 0, 0, 0, 0, 0 } };
const RtsPduSignature RTS_PDU_IN_R1_B1_SIGNATURE = { RTS_FLAG_NONE,
1,
{ RTS_CMD_EMPTY, 0, 0, 0, 0, 0, 0, 0 } };
const RtsPduSignature RTS_PDU_IN_R1_B2_SIGNATURE = {
RTS_FLAG_NONE, 1, { RTS_CMD_RECEIVE_WINDOW_SIZE, 0, 0, 0, 0, 0, 0, 0 }
};
const RtsPduSignature RTS_PDU_IN_R2_A1_SIGNATURE = {
RTS_FLAG_RECYCLE_CHANNEL,
4,
{ RTS_CMD_VERSION, RTS_CMD_COOKIE, RTS_CMD_COOKIE, RTS_CMD_COOKIE, 0, 0, 0, 0 }
};
const RtsPduSignature RTS_PDU_IN_R2_A2_SIGNATURE = { RTS_FLAG_NONE,
1,
{ RTS_CMD_COOKIE, 0, 0, 0, 0, 0, 0, 0 } };
const RtsPduSignature RTS_PDU_IN_R2_A3_SIGNATURE = { RTS_FLAG_NONE,
1,
{ RTS_CMD_DESTINATION, 0, 0, 0, 0, 0, 0, 0 } };
const RtsPduSignature RTS_PDU_IN_R2_A4_SIGNATURE = { RTS_FLAG_NONE,
1,
{ RTS_CMD_DESTINATION, 0, 0, 0, 0, 0, 0, 0 } };
const RtsPduSignature RTS_PDU_IN_R2_A5_SIGNATURE = { RTS_FLAG_NONE,
1,
{ RTS_CMD_COOKIE, 0, 0, 0, 0, 0, 0, 0 } };
const RtsPduSignature RTS_PDU_OUT_R1_A1_SIGNATURE = {
RTS_FLAG_RECYCLE_CHANNEL, 1, { RTS_CMD_DESTINATION, 0, 0, 0, 0, 0, 0, 0 }
};
const RtsPduSignature RTS_PDU_OUT_R1_A2_SIGNATURE = {
RTS_FLAG_RECYCLE_CHANNEL, 1, { RTS_CMD_DESTINATION, 0, 0, 0, 0, 0, 0, 0 }
};
const RtsPduSignature RTS_PDU_OUT_R1_A3_SIGNATURE = { RTS_FLAG_RECYCLE_CHANNEL,
5,
{ RTS_CMD_VERSION, RTS_CMD_COOKIE,
RTS_CMD_COOKIE, RTS_CMD_COOKIE,
RTS_CMD_RECEIVE_WINDOW_SIZE, 0, 0, 0 } };
const RtsPduSignature RTS_PDU_OUT_R1_A4_SIGNATURE = {
RTS_FLAG_RECYCLE_CHANNEL | RTS_FLAG_OUT_CHANNEL,
7,
{ RTS_CMD_VERSION, RTS_CMD_COOKIE, RTS_CMD_COOKIE, RTS_CMD_COOKIE, RTS_CMD_CHANNEL_LIFETIME,
RTS_CMD_RECEIVE_WINDOW_SIZE, RTS_CMD_CONNECTION_TIMEOUT, 0 }
};
const RtsPduSignature RTS_PDU_OUT_R1_A5_SIGNATURE = {
RTS_FLAG_OUT_CHANNEL,
3,
{ RTS_CMD_DESTINATION, RTS_CMD_VERSION, RTS_CMD_CONNECTION_TIMEOUT, 0, 0, 0, 0, 0 }
};
const RtsPduSignature RTS_PDU_OUT_R1_A6_SIGNATURE = {
RTS_FLAG_OUT_CHANNEL,
3,
{ RTS_CMD_DESTINATION, RTS_CMD_VERSION, RTS_CMD_CONNECTION_TIMEOUT, 0, 0, 0, 0, 0 }
};
const RtsPduSignature RTS_PDU_OUT_R1_A7_SIGNATURE = {
RTS_FLAG_OUT_CHANNEL, 2, { RTS_CMD_DESTINATION, RTS_CMD_COOKIE, 0, 0, 0, 0, 0, 0 }
};
const RtsPduSignature RTS_PDU_OUT_R1_A8_SIGNATURE = {
RTS_FLAG_OUT_CHANNEL, 2, { RTS_CMD_DESTINATION, RTS_CMD_COOKIE, 0, 0, 0, 0, 0, 0 }
};
const RtsPduSignature RTS_PDU_OUT_R1_A9_SIGNATURE = { RTS_FLAG_NONE,
1,
{ RTS_CMD_ANCE, 0, 0, 0, 0, 0, 0, 0 } };
const RtsPduSignature RTS_PDU_OUT_R1_A10_SIGNATURE = { RTS_FLAG_NONE,
1,
{ RTS_CMD_ANCE, 0, 0, 0, 0, 0, 0, 0 } };
const RtsPduSignature RTS_PDU_OUT_R1_A11_SIGNATURE = { RTS_FLAG_NONE,
1,
{ RTS_CMD_ANCE, 0, 0, 0, 0, 0, 0, 0 } };
const RtsPduSignature RTS_PDU_OUT_R2_A1_SIGNATURE = {
RTS_FLAG_RECYCLE_CHANNEL, 1, { RTS_CMD_DESTINATION, 0, 0, 0, 0, 0, 0, 0 }
};
const RtsPduSignature RTS_PDU_OUT_R2_A2_SIGNATURE = {
RTS_FLAG_RECYCLE_CHANNEL, 1, { RTS_CMD_DESTINATION, 0, 0, 0, 0, 0, 0, 0 }
};
const RtsPduSignature RTS_PDU_OUT_R2_A3_SIGNATURE = { RTS_FLAG_RECYCLE_CHANNEL,
5,
{ RTS_CMD_VERSION, RTS_CMD_COOKIE,
RTS_CMD_COOKIE, RTS_CMD_COOKIE,
RTS_CMD_RECEIVE_WINDOW_SIZE, 0, 0, 0 } };
const RtsPduSignature RTS_PDU_OUT_R2_A4_SIGNATURE = { RTS_FLAG_NONE,
1,
{ RTS_CMD_COOKIE, 0, 0, 0, 0, 0, 0, 0 } };
const RtsPduSignature RTS_PDU_OUT_R2_A5_SIGNATURE = {
RTS_FLAG_NONE, 2, { RTS_CMD_DESTINATION, RTS_CMD_ANCE, 0, 0, 0, 0, 0, 0 }
};
const RtsPduSignature RTS_PDU_OUT_R2_A6_SIGNATURE = {
RTS_FLAG_NONE, 2, { RTS_CMD_DESTINATION, RTS_CMD_ANCE, 0, 0, 0, 0, 0, 0 }
};
const RtsPduSignature RTS_PDU_OUT_R2_A7_SIGNATURE = {
RTS_FLAG_NONE, 3, { RTS_CMD_DESTINATION, RTS_CMD_COOKIE, RTS_CMD_VERSION, 0, 0, 0, 0, 0 }
};
const RtsPduSignature RTS_PDU_OUT_R2_A8_SIGNATURE = {
RTS_FLAG_OUT_CHANNEL, 2, { RTS_CMD_DESTINATION, RTS_CMD_COOKIE, 0, 0, 0, 0, 0, 0 }
};
const RtsPduSignature RTS_PDU_OUT_R2_B1_SIGNATURE = { RTS_FLAG_NONE,
1,
{ RTS_CMD_ANCE, 0, 0, 0, 0, 0, 0, 0 } };
const RtsPduSignature RTS_PDU_OUT_R2_B2_SIGNATURE = {
RTS_FLAG_NONE, 1, { RTS_CMD_NEGATIVE_ANCE, 0, 0, 0, 0, 0, 0, 0 }
};
const RtsPduSignature RTS_PDU_OUT_R2_B3_SIGNATURE = { RTS_FLAG_EOF,
1,
{ RTS_CMD_ANCE, 0, 0, 0, 0, 0, 0, 0 } };
const RtsPduSignature RTS_PDU_OUT_R2_C1_SIGNATURE = { RTS_FLAG_PING,
1,
{ 0, 0, 0, 0, 0, 0, 0, 0 } };
const RtsPduSignature RTS_PDU_KEEP_ALIVE_SIGNATURE = {
RTS_FLAG_OTHER_CMD, 1, { RTS_CMD_CLIENT_KEEPALIVE, 0, 0, 0, 0, 0, 0, 0 }
};
const RtsPduSignature RTS_PDU_PING_TRAFFIC_SENT_NOTIFY_SIGNATURE = {
RTS_FLAG_OTHER_CMD, 1, { RTS_CMD_PING_TRAFFIC_SENT_NOTIFY, 0, 0, 0, 0, 0, 0, 0 }
};
const RtsPduSignature RTS_PDU_ECHO_SIGNATURE = { RTS_FLAG_ECHO, 0, { 0, 0, 0, 0, 0, 0, 0, 0 } };
const RtsPduSignature RTS_PDU_PING_SIGNATURE = { RTS_FLAG_PING, 0, { 0, 0, 0, 0, 0, 0, 0, 0 } };
const RtsPduSignature RTS_PDU_FLOW_CONTROL_ACK_SIGNATURE = {
RTS_FLAG_OTHER_CMD, 1, { RTS_CMD_FLOW_CONTROL_ACK, 0, 0, 0, 0, 0, 0, 0 }
};
const RtsPduSignature RTS_PDU_FLOW_CONTROL_ACK_WITH_DESTINATION_SIGNATURE = {
RTS_FLAG_OTHER_CMD, 2, { RTS_CMD_DESTINATION, RTS_CMD_FLOW_CONTROL_ACK, 0, 0, 0, 0, 0, 0 }
};
static const RTS_PDU_SIGNATURE_ENTRY RTS_PDU_SIGNATURE_TABLE[] = {
{ RTS_PDU_CONN_A1, FALSE, &RTS_PDU_CONN_A1_SIGNATURE, "CONN/A1" },
{ RTS_PDU_CONN_A2, FALSE, &RTS_PDU_CONN_A2_SIGNATURE, "CONN/A2" },
{ RTS_PDU_CONN_A3, TRUE, &RTS_PDU_CONN_A3_SIGNATURE, "CONN/A3" },
{ RTS_PDU_CONN_B1, FALSE, &RTS_PDU_CONN_B1_SIGNATURE, "CONN/B1" },
{ RTS_PDU_CONN_B2, FALSE, &RTS_PDU_CONN_B2_SIGNATURE, "CONN/B2" },
{ RTS_PDU_CONN_B3, FALSE, &RTS_PDU_CONN_B3_SIGNATURE, "CONN/B3" },
{ RTS_PDU_CONN_C1, FALSE, &RTS_PDU_CONN_C1_SIGNATURE, "CONN/C1" },
{ RTS_PDU_CONN_C2, TRUE, &RTS_PDU_CONN_C2_SIGNATURE, "CONN/C2" },
{ RTS_PDU_IN_R1_A1, FALSE, &RTS_PDU_IN_R1_A1_SIGNATURE, "IN_R1/A1" },
{ RTS_PDU_IN_R1_A2, FALSE, &RTS_PDU_IN_R1_A2_SIGNATURE, "IN_R1/A2" },
{ RTS_PDU_IN_R1_A3, FALSE, &RTS_PDU_IN_R1_A3_SIGNATURE, "IN_R1/A3" },
{ RTS_PDU_IN_R1_A4, TRUE, &RTS_PDU_IN_R1_A4_SIGNATURE, "IN_R1/A4" },
{ RTS_PDU_IN_R1_A5, TRUE, &RTS_PDU_IN_R1_A5_SIGNATURE, "IN_R1/A5" },
{ RTS_PDU_IN_R1_A6, FALSE, &RTS_PDU_IN_R1_A6_SIGNATURE, "IN_R1/A6" },
{ RTS_PDU_IN_R1_B1, FALSE, &RTS_PDU_IN_R1_B1_SIGNATURE, "IN_R1/B1" },
{ RTS_PDU_IN_R1_B2, FALSE, &RTS_PDU_IN_R1_B2_SIGNATURE, "IN_R1/B2" },
{ RTS_PDU_IN_R2_A1, FALSE, &RTS_PDU_IN_R2_A1_SIGNATURE, "IN_R2/A1" },
{ RTS_PDU_IN_R2_A2, FALSE, &RTS_PDU_IN_R2_A2_SIGNATURE, "IN_R2/A2" },
{ RTS_PDU_IN_R2_A3, FALSE, &RTS_PDU_IN_R2_A3_SIGNATURE, "IN_R2/A3" },
{ RTS_PDU_IN_R2_A4, TRUE, &RTS_PDU_IN_R2_A4_SIGNATURE, "IN_R2/A4" },
{ RTS_PDU_IN_R2_A5, FALSE, &RTS_PDU_IN_R2_A5_SIGNATURE, "IN_R2/A5" },
{ RTS_PDU_OUT_R1_A1, FALSE, &RTS_PDU_OUT_R1_A1_SIGNATURE, "OUT_R1/A1" },
{ RTS_PDU_OUT_R1_A2, TRUE, &RTS_PDU_OUT_R1_A2_SIGNATURE, "OUT_R1/A2" },
{ RTS_PDU_OUT_R1_A3, FALSE, &RTS_PDU_OUT_R1_A3_SIGNATURE, "OUT_R1/A3" },
{ RTS_PDU_OUT_R1_A4, FALSE, &RTS_PDU_OUT_R1_A4_SIGNATURE, "OUT_R1/A4" },
{ RTS_PDU_OUT_R1_A5, FALSE, &RTS_PDU_OUT_R1_A5_SIGNATURE, "OUT_R1/A5" },
{ RTS_PDU_OUT_R1_A6, TRUE, &RTS_PDU_OUT_R1_A6_SIGNATURE, "OUT_R1/A6" },
{ RTS_PDU_OUT_R1_A7, FALSE, &RTS_PDU_OUT_R1_A7_SIGNATURE, "OUT_R1/A7" },
{ RTS_PDU_OUT_R1_A8, FALSE, &RTS_PDU_OUT_R1_A8_SIGNATURE, "OUT_R1/A8" },
{ RTS_PDU_OUT_R1_A9, FALSE, &RTS_PDU_OUT_R1_A9_SIGNATURE, "OUT_R1/A9" },
{ RTS_PDU_OUT_R1_A10, TRUE, &RTS_PDU_OUT_R1_A10_SIGNATURE, "OUT_R1/A10" },
{ RTS_PDU_OUT_R1_A11, FALSE, &RTS_PDU_OUT_R1_A11_SIGNATURE, "OUT_R1/A11" },
{ RTS_PDU_OUT_R2_A1, FALSE, &RTS_PDU_OUT_R2_A1_SIGNATURE, "OUT_R2/A1" },
{ RTS_PDU_OUT_R2_A2, TRUE, &RTS_PDU_OUT_R2_A2_SIGNATURE, "OUT_R2/A2" },
{ RTS_PDU_OUT_R2_A3, FALSE, &RTS_PDU_OUT_R2_A3_SIGNATURE, "OUT_R2/A3" },
{ RTS_PDU_OUT_R2_A4, FALSE, &RTS_PDU_OUT_R2_A4_SIGNATURE, "OUT_R2/A4" },
{ RTS_PDU_OUT_R2_A5, FALSE, &RTS_PDU_OUT_R2_A5_SIGNATURE, "OUT_R2/A5" },
{ RTS_PDU_OUT_R2_A6, TRUE, &RTS_PDU_OUT_R2_A6_SIGNATURE, "OUT_R2/A6" },
{ RTS_PDU_OUT_R2_A7, FALSE, &RTS_PDU_OUT_R2_A7_SIGNATURE, "OUT_R2/A7" },
{ RTS_PDU_OUT_R2_A8, FALSE, &RTS_PDU_OUT_R2_A8_SIGNATURE, "OUT_R2/A8" },
{ RTS_PDU_OUT_R2_B1, FALSE, &RTS_PDU_OUT_R2_B1_SIGNATURE, "OUT_R2/B1" },
{ RTS_PDU_OUT_R2_B2, FALSE, &RTS_PDU_OUT_R2_B2_SIGNATURE, "OUT_R2/B2" },
{ RTS_PDU_OUT_R2_B3, TRUE, &RTS_PDU_OUT_R2_B3_SIGNATURE, "OUT_R2/B3" },
{ RTS_PDU_OUT_R2_C1, FALSE, &RTS_PDU_OUT_R2_C1_SIGNATURE, "OUT_R2/C1" },
{ RTS_PDU_KEEP_ALIVE, TRUE, &RTS_PDU_KEEP_ALIVE_SIGNATURE, "Keep-Alive" },
{ RTS_PDU_PING_TRAFFIC_SENT_NOTIFY, TRUE, &RTS_PDU_PING_TRAFFIC_SENT_NOTIFY_SIGNATURE,
"Ping Traffic Sent Notify" },
{ RTS_PDU_ECHO, TRUE, &RTS_PDU_ECHO_SIGNATURE, "Echo" },
{ RTS_PDU_PING, TRUE, &RTS_PDU_PING_SIGNATURE, "Ping" },
{ RTS_PDU_FLOW_CONTROL_ACK, TRUE, &RTS_PDU_FLOW_CONTROL_ACK_SIGNATURE, "FlowControlAck" },
{ RTS_PDU_FLOW_CONTROL_ACK_WITH_DESTINATION, TRUE,
&RTS_PDU_FLOW_CONTROL_ACK_WITH_DESTINATION_SIGNATURE, "FlowControlAckWithDestination" }
};
BOOL rts_match_pdu_signature(const RtsPduSignature* signature, wStream* src,
const rpcconn_hdr_t* header)
{
RtsPduSignature extracted = { 0 };
WINPR_ASSERT(signature);
WINPR_ASSERT(src);
if (!rts_extract_pdu_signature(&extracted, src, header))
return FALSE;
return memcmp(signature, &extracted, sizeof(extracted)) == 0;
}
BOOL rts_extract_pdu_signature(RtsPduSignature* signature, wStream* src,
const rpcconn_hdr_t* header)
{
BOOL rc = FALSE;
UINT16 i;
wStream tmp;
rpcconn_hdr_t rheader = { 0 };
const rpcconn_rts_hdr_t* rts;
WINPR_ASSERT(signature);
WINPR_ASSERT(src);
Stream_StaticInit(&tmp, Stream_Pointer(src), Stream_GetRemainingLength(src));
if (!header)
{
if (!rts_read_pdu_header(&tmp, &rheader))
goto fail;
header = &rheader;
}
rts = &header->rts;
if (rts->header.frag_length < sizeof(rpcconn_rts_hdr_t))
goto fail;
signature->Flags = rts->Flags;
signature->NumberOfCommands = rts->NumberOfCommands;
for (i = 0; i < rts->NumberOfCommands; i++)
{
UINT32 CommandType;
size_t CommandLength;
if (!Stream_CheckAndLogRequiredLength(TAG, &tmp, 4))
goto fail;
Stream_Read_UINT32(&tmp, CommandType); /* CommandType (4 bytes) */
/* We only need this for comparison against known command types */
if (i < ARRAYSIZE(signature->CommandTypes))
signature->CommandTypes[i] = CommandType;
if (!rts_command_length(CommandType, &tmp, &CommandLength))
goto fail;
if (!Stream_SafeSeek(&tmp, CommandLength))
goto fail;
}
rc = TRUE;
fail:
rts_free_pdu_header(&rheader, FALSE);
Stream_Free(&tmp, FALSE);
return rc;
}
UINT32 rts_identify_pdu_signature(const RtsPduSignature* signature,
const RTS_PDU_SIGNATURE_ENTRY** entry)
{
size_t i, j;
if (entry)
*entry = NULL;
for (i = 0; i < ARRAYSIZE(RTS_PDU_SIGNATURE_TABLE); i++)
{
const RTS_PDU_SIGNATURE_ENTRY* current = &RTS_PDU_SIGNATURE_TABLE[i];
const RtsPduSignature* pSignature = current->Signature;
if (!current->SignatureClient)
continue;
if (signature->Flags != pSignature->Flags)
continue;
if (signature->NumberOfCommands != pSignature->NumberOfCommands)
continue;
for (j = 0; j < signature->NumberOfCommands; j++)
{
if (signature->CommandTypes[j] != pSignature->CommandTypes[j])
continue;
}
if (entry)
*entry = current;
return current->SignatureId;
}
return 0;
}
BOOL rts_print_pdu_signature(const RtsPduSignature* signature)
{
UINT32 SignatureId;
const RTS_PDU_SIGNATURE_ENTRY* entry;
if (!signature)
return FALSE;
WLog_INFO(TAG, "RTS PDU Signature: Flags: 0x%04" PRIX16 " NumberOfCommands: %" PRIu16 "",
signature->Flags, signature->NumberOfCommands);
SignatureId = rts_identify_pdu_signature(signature, &entry);
if (SignatureId)
WLog_ERR(TAG, "Identified %s RTS PDU", entry->PduName);
return TRUE;
}
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