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[core,rdp] log rdp_read_share_control_header

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in rdp_read_share_control_header read and log all available header data
before checking remaining length.
This commit is contained in:
Armin Novak 2023-06-05 09:42:22 +02:00 committed by Martin Fleisz
parent 00b393c094
commit 9a7aa8dbac
1 changed files with 20 additions and 9 deletions
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29
libfreerdp/core/rdp.c
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@ -211,6 +211,11 @@ BOOL rdp_read_share_control_header(rdpRdp* rdp, wStream* s, UINT16* tpktLength,
*tpktLength = 8; /* Flow control PDU is 8 bytes */
if (remainingLength)
*remainingLength = 0;
char buffer[128] = { 0 };
WLog_Print(rdp->log, WLOG_DEBUG,
"[Flow control PDU] type=%s, tpktLength=%" PRIuz ", remainingLength=%" PRIuz,
pdu_type_to_str(*type, buffer, sizeof(buffer)), *tpktLength, *remainingLength);
return TRUE;
}
@ -221,27 +226,33 @@ BOOL rdp_read_share_control_header(rdpRdp* rdp, wStream* s, UINT16* tpktLength,
return FALSE;
}
if (!Stream_CheckAndLogRequiredLengthWLog(rdp->log, s, len - 2))
return FALSE;
if (tpktLength)
*tpktLength = len;
if (!Stream_CheckAndLogRequiredLengthWLog(rdp->log, s, 2))
return FALSE;
Stream_Read_UINT16(s, tmp); /* pduType */
*type = tmp & 0x0F; /* type is in the 4 least significant bits */
size_t remLen = len - 4;
if (len > 5)
{
if (!Stream_CheckAndLogRequiredLengthWLog(rdp->log, s, 2))
return FALSE;
Stream_Read_UINT16(s, *channel_id); /* pduSource */
if (remainingLength)
*remainingLength = len - 6;
remLen = len - 6;
}
else
{
*channel_id = 0; /* Windows XP can send such short DEACTIVATE_ALL PDUs. */
if (remainingLength)
*remainingLength = len - 4;
}
return TRUE;
char buffer[128] = { 0 };
WLog_Print(rdp->log, WLOG_DEBUG, "type=%s, tpktLength=%" PRIuz ", remainingLength=%" PRIuz,
pdu_type_to_str(*type, buffer, sizeof(buffer)), len, remLen);
if (remainingLength)
*remainingLength = remLen;
return Stream_CheckAndLogRequiredLengthWLog(rdp->log, s, remLen);
}
BOOL rdp_write_share_control_header(rdpRdp* rdp, wStream* s, UINT16 length, UINT16 type,