|
|
|
/**
|
|
|
|
* xrdp: A Remote Desktop Protocol server.
|
|
|
|
*
|
|
|
|
* Copyright (C) Jay Sorg 2004-2012
|
|
|
|
*
|
|
|
|
* 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.
|
|
|
|
*/
|
|
|
|
|
|
|
|
/**
|
|
|
|
*
|
|
|
|
* @file scp.c
|
|
|
|
* @brief scp (sesman control protocol) common code
|
|
|
|
* scp (sesman control protocol) common code
|
|
|
|
* This code controls which version is being used and starts the
|
|
|
|
* appropriate process
|
|
|
|
* @author Jay Sorg, Simone Fedele
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include "sesman.h"
|
|
|
|
|
|
|
|
extern int g_thread_sck; /* in thread.c */
|
|
|
|
extern struct config_sesman *g_cfg; /* in sesman.c */
|
|
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
void *DEFAULT_CC
|
|
|
|
scp_process_start(void *sck)
|
|
|
|
{
|
|
|
|
struct SCP_CONNECTION scon;
|
|
|
|
struct SCP_SESSION *sdata;
|
|
|
|
|
|
|
|
/* making a local copy of the socket (it's on the stack) */
|
|
|
|
/* probably this is just paranoia */
|
|
|
|
scon.in_sck = g_thread_sck;
|
|
|
|
LOG_DBG("started scp thread on socket %d", scon.in_sck);
|
|
|
|
|
|
|
|
/* unlocking g_thread_sck */
|
|
|
|
lock_socket_release();
|
|
|
|
|
|
|
|
make_stream(scon.in_s);
|
|
|
|
make_stream(scon.out_s);
|
|
|
|
|
|
|
|
init_stream(scon.in_s, 8192);
|
|
|
|
init_stream(scon.out_s, 8192);
|
|
|
|
|
|
|
|
switch (scp_vXs_accept(&scon, &(sdata)))
|
|
|
|
{
|
|
|
|
case SCP_SERVER_STATE_OK:
|
|
|
|
|
|
|
|
if (sdata->version == 0)
|
|
|
|
{
|
|
|
|
/* starts processing an scp v0 connection */
|
|
|
|
LOG_DBG("accept ok, go on with scp v0\n", 0);
|
|
|
|
scp_v0_process(&scon, sdata);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
LOG_DBG("accept ok, go on with scp v1\n", 0);
|
|
|
|
/*LOG_DBG("user: %s\npass: %s",sdata->username, sdata->password);*/
|
|
|
|
scp_v1_process(&scon, sdata);
|
|
|
|
}
|
|
|
|
|
|
|
|
break;
|
|
|
|
case SCP_SERVER_STATE_START_MANAGE:
|
|
|
|
/* starting a management session */
|
|
|
|
log_message(LOG_LEVEL_WARNING,
|
|
|
|
"starting a sesman management session...");
|
|
|
|
scp_v1_mng_process(&scon, sdata);
|
|
|
|
break;
|
|
|
|
case SCP_SERVER_STATE_VERSION_ERR:
|
|
|
|
/* an unknown scp version was requested, so we shut down the */
|
|
|
|
/* connection (and log the fact) */
|
|
|
|
log_message(LOG_LEVEL_WARNING,
|
|
|
|
"unknown protocol version specified. connection refused.");
|
|
|
|
break;
|
|
|
|
case SCP_SERVER_STATE_NETWORK_ERR:
|
|
|
|
log_message(LOG_LEVEL_WARNING, "libscp network error.");
|
|
|
|
break;
|
|
|
|
case SCP_SERVER_STATE_SEQUENCE_ERR:
|
|
|
|
log_message(LOG_LEVEL_WARNING, "libscp sequence error.");
|
|
|
|
break;
|
|
|
|
case SCP_SERVER_STATE_INTERNAL_ERR:
|
|
|
|
/* internal error occurred (eg. malloc() error, ecc.) */
|
|
|
|
log_message(LOG_LEVEL_ERROR, "libscp internal error occurred.");
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
log_message(LOG_LEVEL_ALWAYS, "unknown return from scp_vXs_accept()");
|
|
|
|
}
|
|
|
|
|
|
|
|
g_tcp_close(scon.in_sck);
|
|
|
|
free_stream(scon.in_s);
|
|
|
|
free_stream(scon.out_s);
|
|
|
|
return 0;
|
|
|
|
}
|