406 lines
17 KiB
C
406 lines
17 KiB
C
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/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* Request To Send (RTS) PDU Signatures
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*
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* Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <assert.h>
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#include <winpr/stream.h>
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#include <freerdp/log.h>
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#include "rts_signature.h"
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#define TAG FREERDP_TAG("core.gateway.rts")
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const RtsPduSignature RTS_PDU_CONN_A1_SIGNATURE = {
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RTS_FLAG_NONE,
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4,
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{ RTS_CMD_VERSION, RTS_CMD_COOKIE, RTS_CMD_COOKIE, RTS_CMD_RECEIVE_WINDOW_SIZE, 0, 0, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_CONN_A2_SIGNATURE = { RTS_FLAG_OUT_CHANNEL,
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5,
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{ RTS_CMD_VERSION, RTS_CMD_COOKIE,
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RTS_CMD_COOKIE, RTS_CMD_CHANNEL_LIFETIME,
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RTS_CMD_RECEIVE_WINDOW_SIZE, 0, 0, 0 } };
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const RtsPduSignature RTS_PDU_CONN_A3_SIGNATURE = {
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RTS_FLAG_NONE, 1, { RTS_CMD_CONNECTION_TIMEOUT, 0, 0, 0, 0, 0, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_CONN_B1_SIGNATURE = {
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RTS_FLAG_NONE,
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6,
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{ RTS_CMD_VERSION, RTS_CMD_COOKIE, RTS_CMD_COOKIE, RTS_CMD_CHANNEL_LIFETIME,
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RTS_CMD_CLIENT_KEEPALIVE, RTS_CMD_ASSOCIATION_GROUP_ID, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_CONN_B2_SIGNATURE = {
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RTS_FLAG_IN_CHANNEL,
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7,
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{ RTS_CMD_VERSION, RTS_CMD_COOKIE, RTS_CMD_COOKIE, RTS_CMD_RECEIVE_WINDOW_SIZE,
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RTS_CMD_CONNECTION_TIMEOUT, RTS_CMD_ASSOCIATION_GROUP_ID, RTS_CMD_CLIENT_ADDRESS, 0 }
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};
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const RtsPduSignature RTS_PDU_CONN_B3_SIGNATURE = {
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RTS_FLAG_NONE, 2, { RTS_CMD_RECEIVE_WINDOW_SIZE, RTS_CMD_VERSION, 0, 0, 0, 0, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_CONN_C1_SIGNATURE = { RTS_FLAG_NONE,
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3,
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{ RTS_CMD_VERSION, RTS_CMD_RECEIVE_WINDOW_SIZE,
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RTS_CMD_CONNECTION_TIMEOUT, 0, 0, 0, 0, 0 } };
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const RtsPduSignature RTS_PDU_CONN_C2_SIGNATURE = { RTS_FLAG_NONE,
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3,
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{ RTS_CMD_VERSION, RTS_CMD_RECEIVE_WINDOW_SIZE,
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RTS_CMD_CONNECTION_TIMEOUT, 0, 0, 0, 0, 0 } };
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const RtsPduSignature RTS_PDU_IN_R1_A1_SIGNATURE = {
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RTS_FLAG_RECYCLE_CHANNEL,
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4,
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{ RTS_CMD_VERSION, RTS_CMD_COOKIE, RTS_CMD_COOKIE, RTS_CMD_COOKIE, 0, 0, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_IN_R1_A2_SIGNATURE = {
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RTS_FLAG_NONE,
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4,
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{ RTS_CMD_VERSION, RTS_CMD_COOKIE, RTS_CMD_COOKIE, RTS_CMD_COOKIE, RTS_CMD_RECEIVE_WINDOW_SIZE,
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RTS_CMD_CONNECTION_TIMEOUT, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_IN_R1_A3_SIGNATURE = { RTS_FLAG_NONE,
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4,
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{ RTS_CMD_DESTINATION, RTS_CMD_VERSION,
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RTS_CMD_RECEIVE_WINDOW_SIZE,
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RTS_CMD_CONNECTION_TIMEOUT, 0, 0, 0, 0 } };
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const RtsPduSignature RTS_PDU_IN_R1_A4_SIGNATURE = { RTS_FLAG_NONE,
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4,
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{ RTS_CMD_DESTINATION, RTS_CMD_VERSION,
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RTS_CMD_RECEIVE_WINDOW_SIZE,
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RTS_CMD_CONNECTION_TIMEOUT, 0, 0, 0, 0 } };
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const RtsPduSignature RTS_PDU_IN_R1_A5_SIGNATURE = { RTS_FLAG_NONE,
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1,
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{ RTS_CMD_COOKIE, 0, 0, 0, 0, 0, 0, 0 } };
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const RtsPduSignature RTS_PDU_IN_R1_A6_SIGNATURE = { RTS_FLAG_NONE,
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1,
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{ RTS_CMD_COOKIE, 0, 0, 0, 0, 0, 0, 0 } };
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const RtsPduSignature RTS_PDU_IN_R1_B1_SIGNATURE = { RTS_FLAG_NONE,
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1,
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{ RTS_CMD_EMPTY, 0, 0, 0, 0, 0, 0, 0 } };
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const RtsPduSignature RTS_PDU_IN_R1_B2_SIGNATURE = {
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RTS_FLAG_NONE, 1, { RTS_CMD_RECEIVE_WINDOW_SIZE, 0, 0, 0, 0, 0, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_IN_R2_A1_SIGNATURE = {
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RTS_FLAG_RECYCLE_CHANNEL,
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4,
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{ RTS_CMD_VERSION, RTS_CMD_COOKIE, RTS_CMD_COOKIE, RTS_CMD_COOKIE, 0, 0, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_IN_R2_A2_SIGNATURE = { RTS_FLAG_NONE,
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1,
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{ RTS_CMD_COOKIE, 0, 0, 0, 0, 0, 0, 0 } };
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const RtsPduSignature RTS_PDU_IN_R2_A3_SIGNATURE = { RTS_FLAG_NONE,
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1,
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{ RTS_CMD_DESTINATION, 0, 0, 0, 0, 0, 0, 0 } };
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const RtsPduSignature RTS_PDU_IN_R2_A4_SIGNATURE = { RTS_FLAG_NONE,
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1,
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{ RTS_CMD_DESTINATION, 0, 0, 0, 0, 0, 0, 0 } };
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const RtsPduSignature RTS_PDU_IN_R2_A5_SIGNATURE = { RTS_FLAG_NONE,
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1,
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{ RTS_CMD_COOKIE, 0, 0, 0, 0, 0, 0, 0 } };
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const RtsPduSignature RTS_PDU_OUT_R1_A1_SIGNATURE = {
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RTS_FLAG_RECYCLE_CHANNEL, 1, { RTS_CMD_DESTINATION, 0, 0, 0, 0, 0, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_OUT_R1_A2_SIGNATURE = {
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RTS_FLAG_RECYCLE_CHANNEL, 1, { RTS_CMD_DESTINATION, 0, 0, 0, 0, 0, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_OUT_R1_A3_SIGNATURE = { RTS_FLAG_RECYCLE_CHANNEL,
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5,
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{ RTS_CMD_VERSION, RTS_CMD_COOKIE,
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RTS_CMD_COOKIE, RTS_CMD_COOKIE,
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RTS_CMD_RECEIVE_WINDOW_SIZE, 0, 0, 0 } };
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const RtsPduSignature RTS_PDU_OUT_R1_A4_SIGNATURE = {
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RTS_FLAG_RECYCLE_CHANNEL | RTS_FLAG_OUT_CHANNEL,
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7,
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{ RTS_CMD_VERSION, RTS_CMD_COOKIE, RTS_CMD_COOKIE, RTS_CMD_COOKIE, RTS_CMD_CHANNEL_LIFETIME,
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RTS_CMD_RECEIVE_WINDOW_SIZE, RTS_CMD_CONNECTION_TIMEOUT, 0 }
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};
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const RtsPduSignature RTS_PDU_OUT_R1_A5_SIGNATURE = {
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RTS_FLAG_OUT_CHANNEL,
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3,
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{ RTS_CMD_DESTINATION, RTS_CMD_VERSION, RTS_CMD_CONNECTION_TIMEOUT, 0, 0, 0, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_OUT_R1_A6_SIGNATURE = {
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RTS_FLAG_OUT_CHANNEL,
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3,
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{ RTS_CMD_DESTINATION, RTS_CMD_VERSION, RTS_CMD_CONNECTION_TIMEOUT, 0, 0, 0, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_OUT_R1_A7_SIGNATURE = {
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RTS_FLAG_OUT_CHANNEL, 2, { RTS_CMD_DESTINATION, RTS_CMD_COOKIE, 0, 0, 0, 0, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_OUT_R1_A8_SIGNATURE = {
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RTS_FLAG_OUT_CHANNEL, 2, { RTS_CMD_DESTINATION, RTS_CMD_COOKIE, 0, 0, 0, 0, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_OUT_R1_A9_SIGNATURE = { RTS_FLAG_NONE,
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1,
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{ RTS_CMD_ANCE, 0, 0, 0, 0, 0, 0, 0 } };
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const RtsPduSignature RTS_PDU_OUT_R1_A10_SIGNATURE = { RTS_FLAG_NONE,
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1,
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{ RTS_CMD_ANCE, 0, 0, 0, 0, 0, 0, 0 } };
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const RtsPduSignature RTS_PDU_OUT_R1_A11_SIGNATURE = { RTS_FLAG_NONE,
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1,
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{ RTS_CMD_ANCE, 0, 0, 0, 0, 0, 0, 0 } };
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const RtsPduSignature RTS_PDU_OUT_R2_A1_SIGNATURE = {
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RTS_FLAG_RECYCLE_CHANNEL, 1, { RTS_CMD_DESTINATION, 0, 0, 0, 0, 0, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_OUT_R2_A2_SIGNATURE = {
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RTS_FLAG_RECYCLE_CHANNEL, 1, { RTS_CMD_DESTINATION, 0, 0, 0, 0, 0, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_OUT_R2_A3_SIGNATURE = { RTS_FLAG_RECYCLE_CHANNEL,
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5,
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{ RTS_CMD_VERSION, RTS_CMD_COOKIE,
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RTS_CMD_COOKIE, RTS_CMD_COOKIE,
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RTS_CMD_RECEIVE_WINDOW_SIZE, 0, 0, 0 } };
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const RtsPduSignature RTS_PDU_OUT_R2_A4_SIGNATURE = { RTS_FLAG_NONE,
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1,
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{ RTS_CMD_COOKIE, 0, 0, 0, 0, 0, 0, 0 } };
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const RtsPduSignature RTS_PDU_OUT_R2_A5_SIGNATURE = {
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RTS_FLAG_NONE, 2, { RTS_CMD_DESTINATION, RTS_CMD_ANCE, 0, 0, 0, 0, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_OUT_R2_A6_SIGNATURE = {
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RTS_FLAG_NONE, 2, { RTS_CMD_DESTINATION, RTS_CMD_ANCE, 0, 0, 0, 0, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_OUT_R2_A7_SIGNATURE = {
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RTS_FLAG_NONE, 3, { RTS_CMD_DESTINATION, RTS_CMD_COOKIE, RTS_CMD_VERSION, 0, 0, 0, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_OUT_R2_A8_SIGNATURE = {
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RTS_FLAG_OUT_CHANNEL, 2, { RTS_CMD_DESTINATION, RTS_CMD_COOKIE, 0, 0, 0, 0, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_OUT_R2_B1_SIGNATURE = { RTS_FLAG_NONE,
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1,
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{ RTS_CMD_ANCE, 0, 0, 0, 0, 0, 0, 0 } };
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const RtsPduSignature RTS_PDU_OUT_R2_B2_SIGNATURE = {
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RTS_FLAG_NONE, 1, { RTS_CMD_NEGATIVE_ANCE, 0, 0, 0, 0, 0, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_OUT_R2_B3_SIGNATURE = { RTS_FLAG_EOF,
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1,
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{ RTS_CMD_ANCE, 0, 0, 0, 0, 0, 0, 0 } };
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const RtsPduSignature RTS_PDU_OUT_R2_C1_SIGNATURE = { RTS_FLAG_PING,
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1,
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{ 0, 0, 0, 0, 0, 0, 0, 0 } };
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const RtsPduSignature RTS_PDU_KEEP_ALIVE_SIGNATURE = {
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RTS_FLAG_OTHER_CMD, 1, { RTS_CMD_CLIENT_KEEPALIVE, 0, 0, 0, 0, 0, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_PING_TRAFFIC_SENT_NOTIFY_SIGNATURE = {
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RTS_FLAG_OTHER_CMD, 1, { RTS_CMD_PING_TRAFFIC_SENT_NOTIFY, 0, 0, 0, 0, 0, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_ECHO_SIGNATURE = { RTS_FLAG_ECHO, 0, { 0, 0, 0, 0, 0, 0, 0, 0 } };
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const RtsPduSignature RTS_PDU_PING_SIGNATURE = { RTS_FLAG_PING, 0, { 0, 0, 0, 0, 0, 0, 0, 0 } };
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const RtsPduSignature RTS_PDU_FLOW_CONTROL_ACK_SIGNATURE = {
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RTS_FLAG_OTHER_CMD, 1, { RTS_CMD_FLOW_CONTROL_ACK, 0, 0, 0, 0, 0, 0, 0 }
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};
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const RtsPduSignature RTS_PDU_FLOW_CONTROL_ACK_WITH_DESTINATION_SIGNATURE = {
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RTS_FLAG_OTHER_CMD, 2, { RTS_CMD_DESTINATION, RTS_CMD_FLOW_CONTROL_ACK, 0, 0, 0, 0, 0, 0 }
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};
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static const RTS_PDU_SIGNATURE_ENTRY RTS_PDU_SIGNATURE_TABLE[] = {
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{ RTS_PDU_CONN_A1, FALSE, &RTS_PDU_CONN_A1_SIGNATURE, "CONN/A1" },
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{ RTS_PDU_CONN_A2, FALSE, &RTS_PDU_CONN_A2_SIGNATURE, "CONN/A2" },
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{ RTS_PDU_CONN_A3, TRUE, &RTS_PDU_CONN_A3_SIGNATURE, "CONN/A3" },
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{ RTS_PDU_CONN_B1, FALSE, &RTS_PDU_CONN_B1_SIGNATURE, "CONN/B1" },
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{ RTS_PDU_CONN_B2, FALSE, &RTS_PDU_CONN_B2_SIGNATURE, "CONN/B2" },
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{ RTS_PDU_CONN_B3, FALSE, &RTS_PDU_CONN_B3_SIGNATURE, "CONN/B3" },
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{ RTS_PDU_CONN_C1, FALSE, &RTS_PDU_CONN_C1_SIGNATURE, "CONN/C1" },
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{ RTS_PDU_CONN_C2, TRUE, &RTS_PDU_CONN_C2_SIGNATURE, "CONN/C2" },
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{ RTS_PDU_IN_R1_A1, FALSE, &RTS_PDU_IN_R1_A1_SIGNATURE, "IN_R1/A1" },
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{ RTS_PDU_IN_R1_A2, FALSE, &RTS_PDU_IN_R1_A2_SIGNATURE, "IN_R1/A2" },
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{ RTS_PDU_IN_R1_A3, FALSE, &RTS_PDU_IN_R1_A3_SIGNATURE, "IN_R1/A3" },
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{ RTS_PDU_IN_R1_A4, TRUE, &RTS_PDU_IN_R1_A4_SIGNATURE, "IN_R1/A4" },
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{ RTS_PDU_IN_R1_A5, TRUE, &RTS_PDU_IN_R1_A5_SIGNATURE, "IN_R1/A5" },
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{ RTS_PDU_IN_R1_A6, FALSE, &RTS_PDU_IN_R1_A6_SIGNATURE, "IN_R1/A6" },
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{ RTS_PDU_IN_R1_B1, FALSE, &RTS_PDU_IN_R1_B1_SIGNATURE, "IN_R1/B1" },
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{ RTS_PDU_IN_R1_B2, FALSE, &RTS_PDU_IN_R1_B2_SIGNATURE, "IN_R1/B2" },
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{ RTS_PDU_IN_R2_A1, FALSE, &RTS_PDU_IN_R2_A1_SIGNATURE, "IN_R2/A1" },
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{ RTS_PDU_IN_R2_A2, FALSE, &RTS_PDU_IN_R2_A2_SIGNATURE, "IN_R2/A2" },
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{ RTS_PDU_IN_R2_A3, FALSE, &RTS_PDU_IN_R2_A3_SIGNATURE, "IN_R2/A3" },
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{ RTS_PDU_IN_R2_A4, TRUE, &RTS_PDU_IN_R2_A4_SIGNATURE, "IN_R2/A4" },
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{ RTS_PDU_IN_R2_A5, FALSE, &RTS_PDU_IN_R2_A5_SIGNATURE, "IN_R2/A5" },
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{ 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 };
|
||
|
|
|
||
|
|
assert(signature);
|
||
|
|
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;
|
||
|
|
|
||
|
|
assert(signature);
|
||
|
|
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_GetRemainingLength(&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;
|
||
|
|
}
|