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Add libipm interfaces to sesman 

Add modules to sesman to handle incoming EICP and ERCP messages
This commit is contained in:
matt335672 2023-03-23 12:50:14 +00:00
parent 9c2c43693c
commit 3895954b75
4 changed files with 295 additions and 0 deletions
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111
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/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Jay Sorg 2004-2023
*
* 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 eicp_process.c
* @brief eicp (executive initialisation control protocol) handler function
* @author Matt Burt
*
*/
#if defined(HAVE_CONFIG_H)
#include <config_ac.h>
#endif
#include "trans.h"
#include "eicp.h"
#include "eicp_process.h"
#include "os_calls.h"
#include "pre_session_list.h"
#include "scp.h"
#include "sesman.h"
/******************************************************************************/
static int
process_sys_login_response(struct pre_session_item *psi)
{
int rv;
int is_logged_in;
uid_t uid;
int scp_fd;
rv = eicp_get_sys_login_response(psi->sesexec_trans, &is_logged_in,
&uid, &scp_fd);
if (rv == 0)
{
LOG(LOG_LEVEL_INFO, "Received sys login status for %s : %s",
psi->username,
(is_logged_in) ? "logged in" : "not logged in");
if (!is_logged_in)
{
// This shouldn't happen. Close the connection to the
// client immediately.
psi->dispatcher_action = E_PSD_TERMINATE_PRE_SESSION;
}
else
{
/* We've been handed back the client connection */
psi->client_trans = scp_init_trans_from_fd(scp_fd,
TRANS_TYPE_SERVER,
sesman_is_term);
if (psi->client_trans == NULL)
{
LOG(LOG_LEVEL_ERROR, "Can't re-create client connection");
g_file_close(scp_fd);
psi->dispatcher_action = E_PSD_TERMINATE_PRE_SESSION;
}
else
{
psi->client_trans->trans_data_in = sesman_scp_data_in;
psi->client_trans->callback_data = (void *)psi;
psi->login_state = E_PS_LOGIN_SYS;
psi->uid = uid;
}
}
}
return rv;
}
/******************************************************************************/
int
eicp_process(struct pre_session_item *psi)
{
enum eicp_msg_code msgno;
int rv = 0;
switch ((msgno = eicp_msg_in_get_msgno(psi->sesexec_trans)))
{
case E_EICP_SYS_LOGIN_RESPONSE:
rv = process_sys_login_response(psi);
break;
default:
{
char buff[64];
eicp_msgno_to_str(msgno, buff, sizeof(buff));
LOG(LOG_LEVEL_ERROR, "Ignored EICP message %s", buff);
}
}
return rv;
}

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/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Jay Sorg 2004-2023
*
* 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 eicp_process.h
* @brief eicp (executive initialisation control protocol) handler function
* @author Matt Burt
*
*/
#ifndef EICP_PROCESS_H
#define EICP_PROCESS_H
struct pre_session_item;
/**
*
* @brief Processes an EICP message
* @param sc the sesman connection
*
*/
int
eicp_process(struct pre_session_item *psi);
#endif

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/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Jay Sorg 2004-2023
*
* 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 ercp_process.c
* @brief ERCP (executive run-time control protocol) handler function
* @author Matt Burt
*
*/
#if defined(HAVE_CONFIG_H)
#include <config_ac.h>
#endif
#include <stdio.h>
#include "trans.h"
#include "ercp.h"
#include "ercp_process.h"
#include "session_list.h"
/******************************************************************************/
static int
process_session_announce_event(struct session_item *si)
{
int rv;
const char *start_ip_addr;
rv = ercp_get_session_announce_event(si->sesexec_trans,
NULL,
&si->uid,
&si->type,
&si->start_width,
&si->start_height,
&si->bpp,
&si->guid,
&start_ip_addr,
&si->start_time);
if (rv == 0)
{
snprintf(si->start_ip_addr, sizeof(si->start_ip_addr),
"%s", start_ip_addr);
si->state = E_SESSION_RUNNING;
}
return rv;
}
/******************************************************************************/
static void
process_session_finished_event(struct session_item *si)
{
LOG(LOG_LEVEL_INFO, "Session on display %d has finished.",
si->display);
// Setting the transport down will remove this connection from the list
si->sesexec_trans->status = TRANS_STATUS_DOWN;
}
/******************************************************************************/
int
ercp_process(struct session_item *si)
{
enum ercp_msg_code msgno;
int rv = 0;
switch ((msgno = ercp_msg_in_get_msgno(si->sesexec_trans)))
{
case E_ERCP_SESSION_ANNOUNCE_EVENT:
rv = process_session_announce_event(si);
break;
case E_ERCP_SESSION_FINISHED_EVENT:
process_session_finished_event(si);
break;
default:
{
char buff[64];
ercp_msgno_to_str(msgno, buff, sizeof(buff));
LOG(LOG_LEVEL_ERROR, "Ignored EICP message %s", buff);
}
}
return rv;
}

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/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Jay Sorg 2004-2023
*
* 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 ercp_process.h
* @brief ERCP (executive run-time control protocol) handler function
* @author Matt Burt
*
*/
#ifndef ERCP_PROCESS_H
#define ERCP_PROCESS_H
struct session_item;
/**
*
* @brief Processes an ERCP message
* @param sc the sesman connection
*
*/
int
ercp_process(struct session_item *si);
#endif // ERCP_PROCESS_H