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libfreerdp-core: fix RTS and RPC header length values

This commit is contained in:
Marc-André Moreau 2012-11-16 15:51:12 -05:00
parent da0b3f88c6
commit 07d820cf04
3 changed files with 56 additions and 28 deletions
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9
libfreerdp/core/rpc.c
View File

@ -674,8 +674,8 @@ int rpc_out_read(rdpRpc* rpc, BYTE* data, int length)
//if (rpc->VirtualConnection->DefaultOutChannel->ReceiverAvailableWindow < 0x00008FFF) /* Just a simple workaround */
// rts_send_flow_control_ack_pdu(rpc); /* Send FlowControlAck every time AvailableWindow reaches the half */
/* read first 20 bytes to get RPC PDU Header */
status = tls_read(rpc->TlsOut, data, 20);
/* Read common header fields */
status = tls_read(rpc->TlsOut, data, RPC_COMMON_FIELDS_LENGTH);
if (status <= 0)
return status;
@ -684,7 +684,8 @@ int rpc_out_read(rdpRpc* rpc, BYTE* data, int length)
rpc_pdu_header_print(header);
status = tls_read(rpc->TlsOut, &data[20], header->common.frag_length - 20);
status = tls_read(rpc->TlsOut, &data[RPC_COMMON_FIELDS_LENGTH],
header->common.frag_length - RPC_COMMON_FIELDS_LENGTH);
if (status < 0)
return status;
@ -792,7 +793,7 @@ int rpc_recv_pdu_header(rdpRpc* rpc, BYTE* header)
int bytesRead;
UINT32 offset;
/* read first 20 bytes to get RPC common fields */
/* Read common header fields */
bytesRead = 0;

58
libfreerdp/core/rts.c
View File

@ -151,7 +151,7 @@ BOOL rts_connect(rdpRpc* rpc)
return FALSE;
}
if (!rts_send_CONN_A1_pdu(rpc))
if (rts_send_CONN_A1_pdu(rpc) != 0)
{
printf("rpc_send_CONN_A1_pdu error!\n");
return FALSE;
@ -163,7 +163,7 @@ BOOL rts_connect(rdpRpc* rpc)
return FALSE;
}
if (!rts_send_CONN_B1_pdu(rpc))
if (rts_send_CONN_B1_pdu(rpc) != 0)
{
printf("rpc_send_CONN_B1_pdu error!\n");
return FALSE;
@ -245,7 +245,7 @@ BOOL rts_connect(rdpRpc* rpc)
return FALSE;
}
rts_recv_pdu_commands(rpc, rts);
rts_recv_CONN_A3_pdu(rpc, rpc->buffer, rpc->length);
rpc->VirtualConnection->State = VIRTUAL_CONNECTION_STATE_WAIT_C2;
DEBUG_RTS("VIRTUAL_CONNECTION_STATE_WAIT_C2");
@ -284,7 +284,7 @@ BOOL rts_connect(rdpRpc* rpc)
return FALSE;
}
rts_recv_pdu_commands(rpc, rts);
rts_recv_CONN_C2_pdu(rpc, rpc->buffer, rpc->length);
rpc->VirtualConnection->State = VIRTUAL_CONNECTION_STATE_OPENED;
DEBUG_RTS("VIRTUAL_CONNECTION_STATE_OPENED");
@ -403,10 +403,10 @@ int rts_flow_control_ack_command_write(BYTE* buffer, UINT32 BytesReceived, UINT3
return 28;
}
int rts_connection_timeout_command_read(rdpRpc* rpc, BYTE* buffer, UINT32 length)
int rts_connection_timeout_command_read(rdpRpc* rpc, BYTE* buffer, UINT32 length, UINT32* ConnectionTimeout)
{
/* ConnectionTimeout (4 bytes) */
if (ConnectionTimeout)
*ConnectionTimeout = *((UINT32*) &buffer[0]); /* ConnectionTimeout (4 bytes) */
return 4;
}
@ -672,7 +672,9 @@ void rts_generate_cookie(BYTE* cookie)
RAND_pseudo_bytes(cookie, 16);
}
BOOL rts_send_CONN_A1_pdu(rdpRpc* rpc)
/* CONN/A Sequence */
int rts_send_CONN_A1_pdu(rdpRpc* rpc)
{
BYTE* buffer;
rpcconn_rts_hdr_t header;
@ -706,10 +708,21 @@ BOOL rts_send_CONN_A1_pdu(rdpRpc* rpc)
free(buffer);
return TRUE;
return 0;
}
BOOL rts_send_CONN_B1_pdu(rdpRpc* rpc)
int rts_recv_CONN_A3_pdu(rdpRpc* rpc, BYTE* buffer, UINT32 length)
{
UINT32 ConnectionTimeout;
rts_connection_timeout_command_read(rpc, &buffer[24], length - 24, &ConnectionTimeout);
return 0;
}
/* CONN/B Sequence */
int rts_send_CONN_B1_pdu(rdpRpc* rpc)
{
BYTE* buffer;
rpcconn_rts_hdr_t header;
@ -747,10 +760,19 @@ BOOL rts_send_CONN_B1_pdu(rdpRpc* rpc)
free(buffer);
return TRUE;
return 0;
}
BOOL rts_send_keep_alive_pdu(rdpRpc* rpc)
/* CONN/C Sequence */
int rts_recv_CONN_C2_pdu(rdpRpc* rpc, BYTE* buffer, UINT32 length)
{
return 0;
}
/* Out-of-Sequence PDUs */
int rts_send_keep_alive_pdu(rdpRpc* rpc)
{
BYTE* buffer;
rpcconn_rts_hdr_t header;
@ -770,10 +792,10 @@ BOOL rts_send_keep_alive_pdu(rdpRpc* rpc)
free(buffer);
return TRUE;
return 0;
}
BOOL rts_send_flow_control_ack_pdu(rdpRpc* rpc)
int rts_send_flow_control_ack_pdu(rdpRpc* rpc)
{
BYTE* buffer;
rpcconn_rts_hdr_t header;
@ -804,10 +826,10 @@ BOOL rts_send_flow_control_ack_pdu(rdpRpc* rpc)
free(buffer);
return TRUE;
return 0;
}
BOOL rts_send_ping_pdu(rdpRpc* rpc)
int rts_send_ping_pdu(rdpRpc* rpc)
{
BYTE* buffer;
rpcconn_rts_hdr_t header;
@ -827,7 +849,7 @@ BOOL rts_send_ping_pdu(rdpRpc* rpc)
free(buffer);
return TRUE;
return 0;
}
static RtsPduSignature RTS_PDU_CONN_A1_SIGNATURE = { RTS_FLAG_NONE, 4,
@ -1182,7 +1204,7 @@ int rts_recv_pdu_commands(rdpRpc* rpc, rpcconn_rts_hdr_t* rts)
break;
case RTS_CMD_CONNECTION_TIMEOUT:
offset += rts_connection_timeout_command_read(rpc, &buffer[offset], length);
offset += rts_connection_timeout_command_read(rpc, &buffer[offset], length, NULL);
break;
case RTS_CMD_COOKIE:

17
libfreerdp/core/rts.h
View File

@ -171,7 +171,7 @@ int rts_receive_window_size_command_write(BYTE* buffer, UINT32 ReceiveWindowSize
int rts_flow_control_ack_command_read(rdpRpc* rpc, BYTE* buffer, UINT32 length);
int rts_flow_control_ack_command_write(BYTE* buffer, UINT32 BytesReceived, UINT32 AvailableWindow, BYTE* ChannelCookie);
int rts_connection_timeout_command_read(rdpRpc* rpc, BYTE* buffer, UINT32 length);
int rts_connection_timeout_command_read(rdpRpc* rpc, BYTE* buffer, UINT32 length, UINT32* ConnectionTimeout);
int rts_connection_timeout_command_write(BYTE* buffer, UINT32 ConnectionTimeout);
int rts_cookie_command_read(rdpRpc* rpc, BYTE* buffer, UINT32 length);
@ -210,11 +210,16 @@ int rts_destination_command_write(BYTE* buffer, UINT32 Destination);
int rts_ping_traffic_sent_notify_command_read(rdpRpc* rpc, BYTE* buffer, UINT32 length);
int rts_ping_traffic_sent_notify_command_write(BYTE* buffer, UINT32 PingTrafficSent);
BOOL rts_send_CONN_A1_pdu(rdpRpc* rpc);
BOOL rts_send_CONN_B1_pdu(rdpRpc* rpc);
BOOL rts_send_keep_alive_pdu(rdpRpc* rpc);
BOOL rts_send_flow_control_ack_pdu(rdpRpc* rpc);
BOOL rts_send_ping_pdu(rdpRpc* rpc);
int rts_send_CONN_A1_pdu(rdpRpc* rpc);
int rts_recv_CONN_A3_pdu(rdpRpc* rpc, BYTE* buffer, UINT32 length);
int rts_send_CONN_B1_pdu(rdpRpc* rpc);
int rts_recv_CONN_C2_pdu(rdpRpc* rpc, BYTE* buffer, UINT32 length);
int rts_send_keep_alive_pdu(rdpRpc* rpc);
int rts_send_flow_control_ack_pdu(rdpRpc* rpc);
int rts_send_ping_pdu(rdpRpc* rpc);
int rts_recv_pdu(rdpRpc* rpc);