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/*
Unix SMB/CIFS implementation.
Password and authentication handling
Copyright (C) Andrew Tridgell 1992-2005
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
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.
*/
#include "includes.h"
#include "smb_server/smb_server.h"
#include "dlinklist.h"
/****************************************************************************
init the tcon structures
****************************************************************************/
void smbsrv_vuid_init(struct smbsrv_connection *smb_conn)
{
smb_conn->sessions.idtree_vuid = idr_init(smb_conn);
}
/****************************************************************************
Find the session structure assoicated with a VUID (not one from an in-progress session setup)
****************************************************************************/
struct smbsrv_session *smbsrv_session_find(struct smbsrv_connection *smb_conn, uint16_t vuid)
{
struct smbsrv_session *sess = idr_find(smb_conn->sessions.idtree_vuid, vuid);
if (sess && sess->finished_sesssetup) {
return sess;
}
return NULL;
}
/****************************************************************************
Find a VUID assoicated with an in-progress session setup
****************************************************************************/
struct smbsrv_session *smbsrv_session_find_sesssetup(struct smbsrv_connection *smb_conn, uint16_t vuid)
{
struct smbsrv_session *sess = idr_find(smb_conn->sessions.idtree_vuid, vuid);
if (sess && !sess->finished_sesssetup) {
return sess;
}
return NULL;
}
/****************************************************************************
invalidate a session
****************************************************************************/
static int smbsrv_session_destructor(void *p)
{
struct smbsrv_session *sess = talloc_get_type(p, struct smbsrv_session);
struct smbsrv_connection *smb_conn = sess->smb_conn;
/* clear the vuid from the 'cache' on each connection, and
from the vuid 'owner' of connections */
/* REWRITE: conn_clear_vuid_cache(smb, vuid); */
smb_conn->sessions.num_validated_vuids--;
idr_remove(smb_conn->sessions.idtree_vuid, sess->vuid);
DLIST_REMOVE(smb_conn->sessions.list, sess);
return 0;
}
/****************************************************************************
invalidate a uid
****************************************************************************/
void smbsrv_invalidate_vuid(struct smbsrv_connection *smb_conn, uint16_t vuid)
{
struct smbsrv_session *sess = smbsrv_session_find(smb_conn, vuid);
talloc_free(sess);
}
/**
* register that a valid login has been performed, establish 'session'.
* @param session_info The token returned from the authentication process (if the authentication has completed)
* (now 'owned' by register_vuid)
*
* @param smb_name The untranslated name of the user
*
* @return Newly allocated vuid, biased by an offset. (This allows us to
* tell random client vuid's (normally zero) from valid vuids.)
*
*/
struct smbsrv_session *smbsrv_register_session(struct smbsrv_connection *smb_conn,
struct auth_session_info *session_info,
struct gensec_security *gensec_ctx)
{
struct smbsrv_session *sess = NULL;
int i;
/* Ensure no vuid gets registered in share level security. */
if (smb_conn->config.security == SEC_SHARE) return NULL;
sess = talloc(smb_conn, struct smbsrv_session);
if (sess == NULL) {
DEBUG(0,("talloc(smb_conn->mem_ctx, struct smbsrv_session) failed\n"));
return sess;
}
ZERO_STRUCTP(sess);
i = idr_get_new_random(smb_conn->sessions.idtree_vuid, sess, UINT16_MAX);
if (i == -1) {
DEBUG(1,("ERROR! Out of connection structures\n"));
talloc_free(sess);
return NULL;
}
sess->vuid = i;
smb_conn->sessions.num_validated_vuids++;
/* use this to keep tabs on all our info from the authentication */
sess->session_info = talloc_reference(sess, session_info);
sess->gensec_ctx = talloc_reference(sess, gensec_ctx);
sess->smb_conn = smb_conn;
sess->connect_time = timeval_current();
DLIST_ADD(smb_conn->sessions.list, sess);
talloc_set_destructor(sess, smbsrv_session_destructor);
return sess;
}
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