You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
231 lines
7.0 KiB
231 lines
7.0 KiB
/*
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
|
xrdp: A Remote Desktop Protocol server.
|
|
Copyright (C) Jay Sorg 2005-2008
|
|
*/
|
|
|
|
/**
|
|
*
|
|
* @file scp_v1.c
|
|
* @brief scp version 1 implementation
|
|
* @author Jay Sorg, Simone Fedele
|
|
*
|
|
*/
|
|
|
|
#include "sesman.h"
|
|
|
|
//#include "libscp_types.h"
|
|
#include "libscp.h"
|
|
|
|
extern struct config_sesman* g_cfg; /* in sesman.c */
|
|
|
|
static void parseCommonStates(enum SCP_SERVER_STATES_E e, char* f);
|
|
|
|
/******************************************************************************/
|
|
void DEFAULT_CC
|
|
scp_v1_process(struct SCP_CONNECTION* c, struct SCP_SESSION* s)
|
|
{
|
|
long data;
|
|
int display;
|
|
int retries;
|
|
int current_try;
|
|
enum SCP_SERVER_STATES_E e;
|
|
struct SCP_DISCONNECTED_SESSION* slist;
|
|
struct session_item* sitem;
|
|
int scount;
|
|
SCP_SID sid;
|
|
|
|
retries = g_cfg->sec.login_retry;
|
|
current_try = retries;
|
|
|
|
data = auth_userpass(s->username, s->password);
|
|
/*LOG_DBG("user: %s\npass: %s", s->username, s->password);*/
|
|
|
|
while ((!data) && ((retries == 0) || (current_try > 0)))
|
|
{
|
|
LOG_DBG("data %d - retry %d - currenttry %d - expr %d", data, retries, current_try, ((!data) && ((retries==0) || (current_try>0))));
|
|
|
|
e=scp_v1s_request_password(c,s,"Wrong username and/or password");
|
|
|
|
switch (e)
|
|
{
|
|
case SCP_SERVER_STATE_OK:
|
|
/* all ok, we got new username and password */
|
|
data = auth_userpass(s->username, s->password);
|
|
/* one try less */
|
|
if (current_try > 0)
|
|
{
|
|
current_try--;
|
|
}
|
|
break;
|
|
default:
|
|
/* we check the other errors */
|
|
parseCommonStates(e, "scp_v1s_list_sessions()");
|
|
scp_session_destroy(s);
|
|
return;
|
|
//break;
|
|
}
|
|
}
|
|
|
|
if (!data)
|
|
{
|
|
scp_v1s_deny_connection(c, "Login failed");
|
|
log_message( LOG_LEVEL_INFO,
|
|
"Login failed for user %s. Connection terminated", s->username);
|
|
scp_session_destroy(s);
|
|
return;
|
|
}
|
|
|
|
/* testing if login is allowed*/
|
|
if (0 == access_login_allowed(s->username))
|
|
{
|
|
scp_v1s_deny_connection(c, "Access to Terminal Server not allowed.");
|
|
log_message(LOG_LEVEL_INFO,
|
|
"User %s not allowed on TS. Connection terminated", s->username);
|
|
scp_session_destroy(s);
|
|
return;
|
|
}
|
|
|
|
//check if we need password change
|
|
|
|
/* list disconnected sessions */
|
|
slist = session_get_byuser(s->username, &scount, SESMAN_SESSION_STATUS_DISCONNECTED);
|
|
|
|
if (scount == 0)
|
|
{
|
|
/* no disconnected sessions - start a new one */
|
|
log_message(LOG_LEVEL_DEBUG,"No disconnected sessions for this user"
|
|
"- we create a new one");
|
|
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(s->width, s->height, s->bpp, s->username,
|
|
s->password, data, SESMAN_SESSION_TYPE_XVNC,
|
|
s->domain, s->program, s->directory, s->client_ip);
|
|
}
|
|
else
|
|
{
|
|
log_message(LOG_LEVEL_INFO, "starting X11rdp session...");
|
|
display = session_start(s->width, s->height, s->bpp, s->username,
|
|
s->password, data, SESMAN_SESSION_TYPE_XRDP,
|
|
s->domain, s->program, s->directory, s->client_ip);
|
|
}
|
|
|
|
e = scp_v1s_connect_new_session(c, display);
|
|
switch (e)
|
|
{
|
|
case SCP_SERVER_STATE_OK:
|
|
/* all ok, we got new username and password */
|
|
break;
|
|
default:
|
|
/* we check the other errors */
|
|
parseCommonStates(e, "scp_v1s_connect_new_session()");
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* one or more disconnected sessions - listing */
|
|
e = scp_v1s_list_sessions(c, scount, slist, &sid);
|
|
|
|
switch (e)
|
|
{
|
|
/*case SCP_SERVER_STATE_FORCE_NEW:*/
|
|
/* we should check for MaxSessions */
|
|
case SCP_SERVER_STATE_SELECTION_CANCEL:
|
|
log_message( LOG_LEVEL_INFO, "Connection cancelled after session listing");
|
|
break;
|
|
case SCP_SERVER_STATE_OK:
|
|
/* ok, reconnecting... */
|
|
sitem=session_get_bypid(sid);
|
|
if (0==sitem)
|
|
{
|
|
e=scp_v1s_connection_error(c, "Internal error");
|
|
log_message(LOG_LEVEL_INFO, "Cannot find session item on the chain");
|
|
}
|
|
else
|
|
{
|
|
display=sitem->display;
|
|
/*e=scp_v1s_reconnect_session(c, sitem, display);*/
|
|
e=scp_v1s_reconnect_session(c, display);
|
|
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, sitem->pid, s->client_ip);
|
|
}
|
|
else
|
|
{
|
|
log_message(LOG_LEVEL_INFO, "++ reconnected session: username %s, display :%d.0, session_pid %d", s->username, display, sitem->pid);
|
|
}
|
|
g_free(sitem);
|
|
}
|
|
break;
|
|
default:
|
|
/* we check the other errors */
|
|
parseCommonStates(e, "scp_v1s_list_sessions()");
|
|
break;
|
|
}
|
|
g_free(slist);
|
|
}
|
|
|
|
/* resource management */
|
|
if ((e == SCP_SERVER_STATE_OK) && (s->rsr))
|
|
{
|
|
/* here goes scp resource sharing code */
|
|
}
|
|
|
|
/* cleanup */
|
|
scp_session_destroy(s);
|
|
auth_end(data);
|
|
}
|
|
|
|
static void parseCommonStates(enum SCP_SERVER_STATES_E e, char* f)
|
|
{
|
|
switch (e)
|
|
{
|
|
case SCP_SERVER_STATE_VERSION_ERR:
|
|
LOG_DBG("version error")
|
|
case SCP_SERVER_STATE_SIZE_ERR:
|
|
/* an unknown scp version was requested, so we shut down the */
|
|
/* connection (and log the fact) */
|
|
log_message(LOG_LEVEL_WARNING,
|
|
"protocol violation. connection closed.");
|
|
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:
|
|
/* dummy: scp_v1s_request_password won't generate any other */
|
|
/* error other than the ones before */
|
|
log_message(LOG_LEVEL_ALWAYS, "unknown return from %s", f);
|
|
break;
|
|
}
|
|
}
|