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/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Jay Sorg 2004-2015
*
* 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_v0.c
* @brief scp version 0 implementation
* @author Jay Sorg, Simone Fedele
*
*/
#if defined(HAVE_CONFIG_H)
#include <config_ac.h>
#endif
#include "sesman.h"
extern struct config_sesman *g_cfg; /* in sesman.c */
/******************************************************************************/
void
scp_v0_process(struct SCP_CONNECTION *c, struct SCP_SESSION *s)
{
int display = 0;
tbus data;
struct session_item *s_item;
int errorcode = 0;
bool_t do_auth_end = 1;
data = auth_userpass(s->username, s->password, &errorcode);
if (s->type == SCP_GW_AUTHENTICATION)
{
/* this is just authentication in a gateway situation */
/* g_writeln("SCP_GW_AUTHENTICATION message received"); */
if (data)
{
if (1 == access_login_allowed(s->username))
{
/* the user is member of the correct groups. */
scp_v0s_replyauthentication(c, errorcode);
log_message(LOG_LEVEL_INFO, "Access permitted for user: %s",
s->username);
/* g_writeln("Connection allowed"); */
}
else
{
scp_v0s_replyauthentication(c, 32 + 3); /* all first 32 are reserved for PAM errors */
log_message(LOG_LEVEL_INFO, "Username okey but group problem for "
"user: %s", s->username);
/* g_writeln("user password ok, but group problem"); */
}
}
else
{
/* g_writeln("username or password error"); */
log_message(LOG_LEVEL_INFO, "Username or password error for user: %s",
s->username);
scp_v0s_replyauthentication(c, errorcode);
}
}
else if (data)
{
s_item = session_get_bydata(s->username, s->width, s->height,
s->bpp, s->type, s->client_ip);
if (s_item != 0)
{
display = s_item->display;
g_memcpy(s->guid, s_item->guid, 16);
if (0 != s->client_ip)
{
log_message( LOG_LEVEL_INFO, "++ reconnected session: username %s, "
"display :%d.0, session_pid %d, ip %s",
s->username, display, s_item->pid, s->client_ip);
}
else
{
log_message(LOG_LEVEL_INFO, "++ reconnected session: username %s, "
"display :%d.0, session_pid %d", s->username, display,
s_item->pid);
}
session_reconnect(display, s->username);
}
else
{
LOG_DBG("pre auth");
if (1 == access_login_allowed(s->username))
{
tui8 guid[16];
g_random((char*)guid, 16);
scp_session_set_guid(s, guid);
if (0 != s->client_ip)
{
log_message(LOG_LEVEL_INFO, "++ created session (access granted): "
"username %s, ip %s", s->username, s->client_ip);
}
else
{
log_message(LOG_LEVEL_INFO, "++ created session (access granted): "
"username %s", s->username);
}
if (SCP_SESSION_TYPE_XVNC == s->type)
{
log_message( LOG_LEVEL_INFO, "starting Xvnc session...");
display = session_start(data, SESMAN_SESSION_TYPE_XVNC, c, s);
}
else if (SCP_SESSION_TYPE_XRDP == s->type)
{
log_message(LOG_LEVEL_INFO, "starting X11rdp session...");
display = session_start(data, SESMAN_SESSION_TYPE_XRDP, c, s);
}
else if (SCP_SESSION_TYPE_XORG == s->type)
{
/* type is SCP_SESSION_TYPE_XORG */
log_message(LOG_LEVEL_INFO, "starting Xorg session...");
display = session_start(data, SESMAN_SESSION_TYPE_XORG, c, s);
}
/* if the session started up ok, auth_end will be called on
sig child */
do_auth_end = display == 0;
}
else
{
display = 0;
}
}
if (display == 0)
{
scp_v0s_deny_connection(c);
}
else
{
scp_v0s_allow_connection(c, display, s->guid);
}
}
else
{
scp_v0s_deny_connection(c);
}
if (do_auth_end)
{
auth_end(data);
}
}
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