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/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Jay Sorg 2004-2022
*
* 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_sync.c
* @brief scp definitions (synchronous calls)
* @author Matt Burt
*
*/
#if defined(HAVE_CONFIG_H)
#include "config_ac.h"
#endif
//nclude "tools_common.h"
//nclude "trans.h"
#include "os_calls.h"
#include "log.h"
#include "scp.h"
#include "scp_sync.h"
/*****************************************************************************/
int
scp_sync_wait_specific(struct trans *t, enum scp_msg_code wait_msgno)
{
int rv = 0;
int available = 0;
while (rv == 0 && !available)
{
if ((rv = scp_msg_in_wait_available(t)) != 0)
{
LOG(LOG_LEVEL_ERROR, "Error waiting on sesman transport");
}
else
{
enum scp_msg_code reply_msgno = scp_msg_in_get_msgno(t);
available = 1;
if (reply_msgno != wait_msgno)
{
char buff[64];
scp_msgno_to_str(reply_msgno, buff, sizeof(buff));
LOG(LOG_LEVEL_WARNING,
"Ignoring unexpected message %s", buff);
scp_msg_in_reset(t);
available = 0;
}
}
}
return rv;
}
/*****************************************************************************/
int
scp_sync_uds_login_request(struct trans *t)
{
int rv = scp_send_uds_login_request(t);
if (rv == 0)
{
if ((rv = scp_sync_wait_specific(t, E_SCP_LOGIN_RESPONSE)) == 0)
{
enum scp_login_status login_result;
int server_closed;
rv = scp_get_login_response(t, &login_result, &server_closed, NULL);
if (rv == 0 && login_result != E_SCP_LOGIN_OK)
{
char msg[256];
scp_login_status_to_str(login_result, msg, sizeof(msg));
g_printf("Login failed; %s\n", msg);
rv = 1;
if (!server_closed)
{
(void)scp_send_close_connection_request(t);
}
}
scp_msg_in_reset(t); // Done with this message
}
}
return rv;
}
/*****************************************************************************/
struct list *
scp_sync_list_sessions_request(struct trans *t)
{
struct list *sessions = list_create();
if (sessions == NULL)
{
LOG(LOG_LEVEL_ERROR, "Out of memory for sessions list");
}
else
{
int end_of_list = 0;
enum scp_list_sessions_status status;
struct scp_session_info *p;
int rv = scp_send_list_sessions_request(t);
sessions->auto_free = 1;
while (rv == 0 && !end_of_list)
{
rv = scp_sync_wait_specific(t, E_SCP_LIST_SESSIONS_RESPONSE);
if (rv != 0)
{
break;
}
rv = scp_get_list_sessions_response(t, &status, &p);
if (rv != 0)
{
break;
}
switch (status)
{
case E_SCP_LS_SESSION_INFO:
if (!list_add_item(sessions, (tintptr)p))
{
g_free(p);
LOG(LOG_LEVEL_ERROR, "Out of memory for session item");
rv = 1;
}
break;
case E_SCP_LS_END_OF_LIST:
end_of_list = 1;
break;
default:
LOG(LOG_LEVEL_ERROR,
"Unexpected return code %d for session item", status);
rv = 1;
}
scp_msg_in_reset(t);
}
if (rv != 0)
{
list_delete(sessions);
sessions = NULL;
}
}
return sessions;
}
/*****************************************************************************/
int
scp_sync_create_sockdir_request(struct trans *t)
{
int rv = scp_send_create_sockdir_request(t);
if (rv == 0)
{
rv = scp_sync_wait_specific(t, E_SCP_CREATE_SOCKDIR_RESPONSE);
if (rv == 0)
{
enum scp_create_sockdir_status status;
rv = scp_get_create_sockdir_response(t, &status);
if (rv == 0)
{
switch (status)
{
case E_SCP_CS_OK:
break;
case E_SCP_CS_NOT_LOGGED_IN:
LOG(LOG_LEVEL_ERROR, "sesman reported not-logged-in");
rv = 1;
break;
case E_SCP_CS_OTHER_ERROR:
LOG(LOG_LEVEL_ERROR,
"sesman reported fail on create directory");
rv = 1;
break;
}
}
scp_msg_in_reset(t); // Done with this message
if (!rv)
{
(void)scp_send_close_connection_request(t);
}
}
}
return rv;
}
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