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samba-mirror/source4/smb_server/session.c

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first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
/*
Unix SMB/CIFS implementation.
Password and authentication handling
Copyright (C) Andrew Tridgell 1992-1998
r6270: Move the VUID handling to a IDR tree. This should avoid O(n) behaviour on session setups, and because we no longer need do deal with the linked list as much, the code is much simpiler too. We may be able to compleatly remove the tid and vuid linked lists, but I need to check. This patch also tries to clean up the VUID handling and session setups in general. To avoid security issues, we now have a distinction between VUIDs allocated for the session setup (to tie togeather the multiple round trips) and those used after authentication. Andrew Bartlett (This used to be commit 3e5775146d9ce6f0ac43aecae7e899b5324399ad)
2005-04-10 07:39:51 +00:00
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
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"
r3466: split out request.h, signing.h, and smb_server.h (This used to be commit 7c4e6ebf05790dd6e29896dd316db0fff613aa4e)
2004-11-02 07:18:24 +00:00
#include "smb_server/smb_server.h"
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
/****************************************************************************
r6270: Move the VUID handling to a IDR tree. This should avoid O(n) behaviour on session setups, and because we no longer need do deal with the linked list as much, the code is much simpiler too. We may be able to compleatly remove the tid and vuid linked lists, but I need to check. This patch also tries to clean up the VUID handling and session setups in general. To avoid security issues, we now have a distinction between VUIDs allocated for the session setup (to tie togeather the multiple round trips) and those used after authentication. Andrew Bartlett (This used to be commit 3e5775146d9ce6f0ac43aecae7e899b5324399ad)
2005-04-10 07:39:51 +00:00
init the tcon structures
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
****************************************************************************/
r6270: Move the VUID handling to a IDR tree. This should avoid O(n) behaviour on session setups, and because we no longer need do deal with the linked list as much, the code is much simpiler too. We may be able to compleatly remove the tid and vuid linked lists, but I need to check. This patch also tries to clean up the VUID handling and session setups in general. To avoid security issues, we now have a distinction between VUIDs allocated for the session setup (to tie togeather the multiple round trips) and those used after authentication. Andrew Bartlett (This used to be commit 3e5775146d9ce6f0ac43aecae7e899b5324399ad)
2005-04-10 07:39:51 +00:00
void smbsrv_vuid_init(struct smbsrv_connection *smb_conn)
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
{
r6270: Move the VUID handling to a IDR tree. This should avoid O(n) behaviour on session setups, and because we no longer need do deal with the linked list as much, the code is much simpiler too. We may be able to compleatly remove the tid and vuid linked lists, but I need to check. This patch also tries to clean up the VUID handling and session setups in general. To avoid security issues, we now have a distinction between VUIDs allocated for the session setup (to tie togeather the multiple round trips) and those used after authentication. Andrew Bartlett (This used to be commit 3e5775146d9ce6f0ac43aecae7e899b5324399ad)
2005-04-10 07:39:51 +00:00
smb_conn->sessions.idtree_vuid = idr_init(smb_conn);
}
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
r6270: Move the VUID handling to a IDR tree. This should avoid O(n) behaviour on session setups, and because we no longer need do deal with the linked list as much, the code is much simpiler too. We may be able to compleatly remove the tid and vuid linked lists, but I need to check. This patch also tries to clean up the VUID handling and session setups in general. To avoid security issues, we now have a distinction between VUIDs allocated for the session setup (to tie togeather the multiple round trips) and those used after authentication. Andrew Bartlett (This used to be commit 3e5775146d9ce6f0ac43aecae7e899b5324399ad)
2005-04-10 07:39:51 +00:00
/****************************************************************************
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;
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
}
return NULL;
}
/****************************************************************************
r6270: Move the VUID handling to a IDR tree. This should avoid O(n) behaviour on session setups, and because we no longer need do deal with the linked list as much, the code is much simpiler too. We may be able to compleatly remove the tid and vuid linked lists, but I need to check. This patch also tries to clean up the VUID handling and session setups in general. To avoid security issues, we now have a distinction between VUIDs allocated for the session setup (to tie togeather the multiple round trips) and those used after authentication. Andrew Bartlett (This used to be commit 3e5775146d9ce6f0ac43aecae7e899b5324399ad)
2005-04-10 07:39:51 +00:00
Find a VUID assoicated with an in-progress session setup
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
****************************************************************************/
r6270: Move the VUID handling to a IDR tree. This should avoid O(n) behaviour on session setups, and because we no longer need do deal with the linked list as much, the code is much simpiler too. We may be able to compleatly remove the tid and vuid linked lists, but I need to check. This patch also tries to clean up the VUID handling and session setups in general. To avoid security issues, we now have a distinction between VUIDs allocated for the session setup (to tie togeather the multiple round trips) and those used after authentication. Andrew Bartlett (This used to be commit 3e5775146d9ce6f0ac43aecae7e899b5324399ad)
2005-04-10 07:39:51 +00:00
struct smbsrv_session *smbsrv_session_find_sesssetup(struct smbsrv_connection *smb_conn, uint16_t vuid)
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
{
r6270: Move the VUID handling to a IDR tree. This should avoid O(n) behaviour on session setups, and because we no longer need do deal with the linked list as much, the code is much simpiler too. We may be able to compleatly remove the tid and vuid linked lists, but I need to check. This patch also tries to clean up the VUID handling and session setups in general. To avoid security issues, we now have a distinction between VUIDs allocated for the session setup (to tie togeather the multiple round trips) and those used after authentication. Andrew Bartlett (This used to be commit 3e5775146d9ce6f0ac43aecae7e899b5324399ad)
2005-04-10 07:39:51 +00:00
struct smbsrv_session *sess = idr_find(smb_conn->sessions.idtree_vuid, vuid);
if (sess && !sess->finished_sesssetup) {
return sess;
}
return NULL;
}
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
r6270: Move the VUID handling to a IDR tree. This should avoid O(n) behaviour on session setups, and because we no longer need do deal with the linked list as much, the code is much simpiler too. We may be able to compleatly remove the tid and vuid linked lists, but I need to check. This patch also tries to clean up the VUID handling and session setups in general. To avoid security issues, we now have a distinction between VUIDs allocated for the session setup (to tie togeather the multiple round trips) and those used after authentication. Andrew Bartlett (This used to be commit 3e5775146d9ce6f0ac43aecae7e899b5324399ad)
2005-04-10 07:39:51 +00:00
/****************************************************************************
invalidate a session
****************************************************************************/
static int smbsrv_session_destructor(void *p)
{
struct smbsrv_session *sess = p;
struct smbsrv_connection *smb_conn = sess->smb_conn;
r443: Update Samba4 to the auth and NTLMSSP code from Samba3. Not all the auth code is merged - only those parts that are actually being used in Samba4. There is a lot more work to do in the NTLMSSP area, and I hope to develop that work here. There is a start on this here - splitting NTLMSSP into two parts that my operate in an async fashion (before and after the actual authentication) Andrew Bartlett (This used to be commit 5876c78806e6a6c44613a1354e8d564b427d0c9f)
2004-05-02 08:45:00 +00:00
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
/* clear the vuid from the 'cache' on each connection, and
from the vuid 'owner' of connections */
/* REWRITE: conn_clear_vuid_cache(smb, vuid); */
r1499: combine struct user_struct and struct smbsrv_user to a struct smbsrv_session that the same as cli_session for the client we need a gensec_security pointer there (spnego support will follow) prefix some related functions with smbsrv_ metze (This used to be commit f276378157bb9994c4c91ce46150a510de5c33f8)
2004-07-14 12:44:31 +00:00
smb_conn->sessions.num_validated_vuids--;
r6270: Move the VUID handling to a IDR tree. This should avoid O(n) behaviour on session setups, and because we no longer need do deal with the linked list as much, the code is much simpiler too. We may be able to compleatly remove the tid and vuid linked lists, but I need to check. This patch also tries to clean up the VUID handling and session setups in general. To avoid security issues, we now have a distinction between VUIDs allocated for the session setup (to tie togeather the multiple round trips) and those used after authentication. Andrew Bartlett (This used to be commit 3e5775146d9ce6f0ac43aecae7e899b5324399ad)
2005-04-10 07:39:51 +00:00
idr_remove(smb_conn->sessions.idtree_vuid, sess->vuid);
return 0;
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
}
/****************************************************************************
r6270: Move the VUID handling to a IDR tree. This should avoid O(n) behaviour on session setups, and because we no longer need do deal with the linked list as much, the code is much simpiler too. We may be able to compleatly remove the tid and vuid linked lists, but I need to check. This patch also tries to clean up the VUID handling and session setups in general. To avoid security issues, we now have a distinction between VUIDs allocated for the session setup (to tie togeather the multiple round trips) and those used after authentication. Andrew Bartlett (This used to be commit 3e5775146d9ce6f0ac43aecae7e899b5324399ad)
2005-04-10 07:39:51 +00:00
invalidate a uid
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
****************************************************************************/
r6270: Move the VUID handling to a IDR tree. This should avoid O(n) behaviour on session setups, and because we no longer need do deal with the linked list as much, the code is much simpiler too. We may be able to compleatly remove the tid and vuid linked lists, but I need to check. This patch also tries to clean up the VUID handling and session setups in general. To avoid security issues, we now have a distinction between VUIDs allocated for the session setup (to tie togeather the multiple round trips) and those used after authentication. Andrew Bartlett (This used to be commit 3e5775146d9ce6f0ac43aecae7e899b5324399ad)
2005-04-10 07:39:51 +00:00
void smbsrv_invalidate_vuid(struct smbsrv_connection *smb_conn, uint16_t vuid)
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
{
r6270: Move the VUID handling to a IDR tree. This should avoid O(n) behaviour on session setups, and because we no longer need do deal with the linked list as much, the code is much simpiler too. We may be able to compleatly remove the tid and vuid linked lists, but I need to check. This patch also tries to clean up the VUID handling and session setups in general. To avoid security issues, we now have a distinction between VUIDs allocated for the session setup (to tie togeather the multiple round trips) and those used after authentication. Andrew Bartlett (This used to be commit 3e5775146d9ce6f0ac43aecae7e899b5324399ad)
2005-04-10 07:39:51 +00:00
struct smbsrv_session *sess = smbsrv_session_find(smb_conn, vuid);
talloc_free(sess);
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
}
/**
* register that a valid login has been performed, establish 'session'.
r1726: Fix up the comments and indenting. Andrew Bartlett (This used to be commit 30275764d8f22c47d46195e155d07c106ca3beba)
2004-08-11 16:16:28 +00:00
* @param session_info The token returned from the authentication process (if the authentication has completed)
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
* (now 'owned' by register_vuid)
*
r443: Update Samba4 to the auth and NTLMSSP code from Samba3. Not all the auth code is merged - only those parts that are actually being used in Samba4. There is a lot more work to do in the NTLMSSP area, and I hope to develop that work here. There is a start on this here - splitting NTLMSSP into two parts that my operate in an async fashion (before and after the actual authentication) Andrew Bartlett (This used to be commit 5876c78806e6a6c44613a1354e8d564b427d0c9f)
2004-05-02 08:45:00 +00:00
* @param smb_name The untranslated name of the user
*
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
* @return Newly allocated vuid, biased by an offset. (This allows us to
* tell random client vuid's (normally zero) from valid vuids.)
*
*/
r6270: Move the VUID handling to a IDR tree. This should avoid O(n) behaviour on session setups, and because we no longer need do deal with the linked list as much, the code is much simpiler too. We may be able to compleatly remove the tid and vuid linked lists, but I need to check. This patch also tries to clean up the VUID handling and session setups in general. To avoid security issues, we now have a distinction between VUIDs allocated for the session setup (to tie togeather the multiple round trips) and those used after authentication. Andrew Bartlett (This used to be commit 3e5775146d9ce6f0ac43aecae7e899b5324399ad)
2005-04-10 07:39:51 +00:00
struct smbsrv_session *smbsrv_register_session(struct smbsrv_connection *smb_conn,
struct auth_session_info *session_info,
struct gensec_security *gensec_ctx)
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
{
r1499: combine struct user_struct and struct smbsrv_user to a struct smbsrv_session that the same as cli_session for the client we need a gensec_security pointer there (spnego support will follow) prefix some related functions with smbsrv_ metze (This used to be commit f276378157bb9994c4c91ce46150a510de5c33f8)
2004-07-14 12:44:31 +00:00
struct smbsrv_session *sess = NULL;
r6270: Move the VUID handling to a IDR tree. This should avoid O(n) behaviour on session setups, and because we no longer need do deal with the linked list as much, the code is much simpiler too. We may be able to compleatly remove the tid and vuid linked lists, but I need to check. This patch also tries to clean up the VUID handling and session setups in general. To avoid security issues, we now have a distinction between VUIDs allocated for the session setup (to tie togeather the multiple round trips) and those used after authentication. Andrew Bartlett (This used to be commit 3e5775146d9ce6f0ac43aecae7e899b5324399ad)
2005-04-10 07:39:51 +00:00
int i;
/* Ensure no vuid gets registered in share level security. */
/* TODO: replace lp_security with a flag in smbsrv_connection */
if (lp_security() == SEC_SHARE)
return UID_FIELD_INVALID;
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
r5037: got rid of all of the TALLOC_DEPRECATED stuff. My apologies for the large commit. I thought this was worthwhile to get done for consistency. (This used to be commit ec32b22ed5ec224f6324f5e069d15e92e38e15c0)
2005-01-27 07:08:20 +00:00
sess = talloc(smb_conn, struct smbsrv_session);
r6270: Move the VUID handling to a IDR tree. This should avoid O(n) behaviour on session setups, and because we no longer need do deal with the linked list as much, the code is much simpiler too. We may be able to compleatly remove the tid and vuid linked lists, but I need to check. This patch also tries to clean up the VUID handling and session setups in general. To avoid security issues, we now have a distinction between VUIDs allocated for the session setup (to tie togeather the multiple round trips) and those used after authentication. Andrew Bartlett (This used to be commit 3e5775146d9ce6f0ac43aecae7e899b5324399ad)
2005-04-10 07:39:51 +00:00
if (sess == NULL) {
r5037: got rid of all of the TALLOC_DEPRECATED stuff. My apologies for the large commit. I thought this was worthwhile to get done for consistency. (This used to be commit ec32b22ed5ec224f6324f5e069d15e92e38e15c0)
2005-01-27 07:08:20 +00:00
DEBUG(0,("talloc(smb_conn->mem_ctx, struct smbsrv_session) failed\n"));
r6270: Move the VUID handling to a IDR tree. This should avoid O(n) behaviour on session setups, and because we no longer need do deal with the linked list as much, the code is much simpiler too. We may be able to compleatly remove the tid and vuid linked lists, but I need to check. This patch also tries to clean up the VUID handling and session setups in general. To avoid security issues, we now have a distinction between VUIDs allocated for the session setup (to tie togeather the multiple round trips) and those used after authentication. Andrew Bartlett (This used to be commit 3e5775146d9ce6f0ac43aecae7e899b5324399ad)
2005-04-10 07:39:51 +00:00
return sess;
r1499: combine struct user_struct and struct smbsrv_user to a struct smbsrv_session that the same as cli_session for the client we need a gensec_security pointer there (spnego support will follow) prefix some related functions with smbsrv_ metze (This used to be commit f276378157bb9994c4c91ce46150a510de5c33f8)
2004-07-14 12:44:31 +00:00
}
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
r1499: combine struct user_struct and struct smbsrv_user to a struct smbsrv_session that the same as cli_session for the client we need a gensec_security pointer there (spnego support will follow) prefix some related functions with smbsrv_ metze (This used to be commit f276378157bb9994c4c91ce46150a510de5c33f8)
2004-07-14 12:44:31 +00:00
ZERO_STRUCTP(sess);
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
r7676: Make VUID and TID choice random, as this gives us protection against replay attacks under SMB signing, where the session key is a fixed derivitive of the user's password. This removes the VID offset, but I'm not worried about random client bytes mattering here, given the space (and the fact that it applies to very, very old clients). Andrew Bartlett (This used to be commit eb1d37c5a91a6bc4515469e1ae026d28c12d7149)
2005-06-17 06:36:13 +00:00
i = idr_get_new_random(smb_conn->sessions.idtree_vuid, sess, UINT16_MAX);
r6270: Move the VUID handling to a IDR tree. This should avoid O(n) behaviour on session setups, and because we no longer need do deal with the linked list as much, the code is much simpiler too. We may be able to compleatly remove the tid and vuid linked lists, but I need to check. This patch also tries to clean up the VUID handling and session setups in general. To avoid security issues, we now have a distinction between VUIDs allocated for the session setup (to tie togeather the multiple round trips) and those used after authentication. Andrew Bartlett (This used to be commit 3e5775146d9ce6f0ac43aecae7e899b5324399ad)
2005-04-10 07:39:51 +00:00
if (i == -1) {
DEBUG(1,("ERROR! Out of connection structures\n"));
talloc_free(sess);
return NULL;
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
}
r6270: Move the VUID handling to a IDR tree. This should avoid O(n) behaviour on session setups, and because we no longer need do deal with the linked list as much, the code is much simpiler too. We may be able to compleatly remove the tid and vuid linked lists, but I need to check. This patch also tries to clean up the VUID handling and session setups in general. To avoid security issues, we now have a distinction between VUIDs allocated for the session setup (to tie togeather the multiple round trips) and those used after authentication. Andrew Bartlett (This used to be commit 3e5775146d9ce6f0ac43aecae7e899b5324399ad)
2005-04-10 07:39:51 +00:00
sess->vuid = i;
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
r1499: combine struct user_struct and struct smbsrv_user to a struct smbsrv_session that the same as cli_session for the client we need a gensec_security pointer there (spnego support will follow) prefix some related functions with smbsrv_ metze (This used to be commit f276378157bb9994c4c91ce46150a510de5c33f8)
2004-07-14 12:44:31 +00:00
smb_conn->sessions.num_validated_vuids++;
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
/* use this to keep tabs on all our info from the authentication */
r6270: Move the VUID handling to a IDR tree. This should avoid O(n) behaviour on session setups, and because we no longer need do deal with the linked list as much, the code is much simpiler too. We may be able to compleatly remove the tid and vuid linked lists, but I need to check. This patch also tries to clean up the VUID handling and session setups in general. To avoid security issues, we now have a distinction between VUIDs allocated for the session setup (to tie togeather the multiple round trips) and those used after authentication. Andrew Bartlett (This used to be commit 3e5775146d9ce6f0ac43aecae7e899b5324399ad)
2005-04-10 07:39:51 +00:00
sess->session_info = talloc_reference(sess, session_info);
sess->gensec_ctx = talloc_reference(sess, gensec_ctx);
r1499: combine struct user_struct and struct smbsrv_user to a struct smbsrv_session that the same as cli_session for the client we need a gensec_security pointer there (spnego support will follow) prefix some related functions with smbsrv_ metze (This used to be commit f276378157bb9994c4c91ce46150a510de5c33f8)
2004-07-14 12:44:31 +00:00
sess->smb_conn = smb_conn;
r6270: Move the VUID handling to a IDR tree. This should avoid O(n) behaviour on session setups, and because we no longer need do deal with the linked list as much, the code is much simpiler too. We may be able to compleatly remove the tid and vuid linked lists, but I need to check. This patch also tries to clean up the VUID handling and session setups in general. To avoid security issues, we now have a distinction between VUIDs allocated for the session setup (to tie togeather the multiple round trips) and those used after authentication. Andrew Bartlett (This used to be commit 3e5775146d9ce6f0ac43aecae7e899b5324399ad)
2005-04-10 07:39:51 +00:00
talloc_set_destructor(sess, smbsrv_session_destructor);
return sess;
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
}
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