rts_signature.c

 
#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)
{
  return rts_match_pdu_signature_ex(signature, src, header, NULL, FALSE);
}
 
BOOL rts_match_pdu_signature_ex(const RtsPduSignature* signature, wStream* src,
                                const rpcconn_hdr_t* header, RtsPduSignature* found_signature,
                                BOOL silent)
{
  RtsPduSignature extracted = { 0 };
 
  WINPR_ASSERT(signature);
  WINPR_ASSERT(src);
 
  if (!rts_extract_pdu_signature_ex(&extracted, src, header, silent))
    return FALSE;
 
  if (found_signature)
    *found_signature = extracted;
  return memcmp(signature, &extracted, sizeof(extracted)) == 0;
}
 
BOOL rts_extract_pdu_signature(RtsPduSignature* signature, wStream* src,
                               const rpcconn_hdr_t* header)
{
  return rts_extract_pdu_signature_ex(signature, src, header, FALSE);
}
 
BOOL rts_extract_pdu_signature_ex(RtsPduSignature* signature, wStream* src,
                                  const rpcconn_hdr_t* header, BOOL silent)
{
  BOOL rc = FALSE;
  wStream sbuffer = { 0 };
  rpcconn_hdr_t rheader = { 0 };
  const rpcconn_rts_hdr_t* rts = NULL;
 
  WINPR_ASSERT(signature);
  WINPR_ASSERT(src);
 
  wStream* s = Stream_StaticInit(&sbuffer, Stream_Pointer(src), Stream_GetRemainingLength(src));
  if (!header)
  {
    if (!rts_read_pdu_header_ex(s, &rheader, silent))
      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 (UINT16 i = 0; i < rts->NumberOfCommands; i++)
  {
    UINT32 CommandType = 0;
    size_t CommandLength = 0;
 
    if (!Stream_ConditionalCheckAndLogRequiredLength(TAG, s, 4, silent))
      goto fail;
 
    Stream_Read_UINT32(s, 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, s, &CommandLength, silent))
      goto fail;
    if (!Stream_ConditionalSafeSeek(s, CommandLength, silent))
      goto fail;
  }
 
  rc = TRUE;
fail:
  rts_free_pdu_header(&rheader, FALSE);
  return rc;
}
 
UINT32 rts_identify_pdu_signature(const RtsPduSignature* signature,
                                  const RTS_PDU_SIGNATURE_ENTRY** entry)
{
  if (entry)
    *entry = NULL;
 
  for (size_t 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 (size_t 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(wLog* log, DWORD level, const RtsPduSignature* signature)
{
  UINT32 SignatureId = 0;
  const RTS_PDU_SIGNATURE_ENTRY* entry = NULL;
 
  if (!signature)
    return FALSE;
 
  WLog_Print(log, level,
             "RTS PDU Signature: Flags: 0x%04" PRIX16 " NumberOfCommands: %" PRIu16 "",
             signature->Flags, signature->NumberOfCommands);
  SignatureId = rts_identify_pdu_signature(signature, &entry);
 
  if (SignatureId)
    WLog_Print(log, level, "Identified %s RTS PDU", entry->PduName);
 
  return TRUE;
}