diff options
Diffstat (limited to 'source4/smb_server/session.c')
| -rw-r--r-- | source4/smb_server/session.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/source4/smb_server/session.c b/source4/smb_server/session.c new file mode 100644 index 0000000..2effa78 --- /dev/null +++ b/source4/smb_server/session.c @@ -0,0 +1,166 @@ +/* + Unix SMB/CIFS implementation. + Password and authentication handling + Copyright (C) Andrew Tridgell 1992-2005 + Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005 + Copyright (C) Stefan Metzmacher 2005-2006 + + 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 3 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, see <http://www.gnu.org/licenses/>. +*/ + +#include "includes.h" +#include "smb_server/smb_server.h" +#include "lib/util/idtree_random.h" + +/* + * init the sessions structures + */ +NTSTATUS smbsrv_init_sessions(struct smbsrv_connection *smb_conn, uint64_t limit) +{ + /* + * the idr_* functions take 'int' as limit, + * and only work with a max limit 0x00FFFFFF + */ + limit &= 0x00FFFFFF; + + smb_conn->sessions.idtree_vuid = idr_init(smb_conn); + NT_STATUS_HAVE_NO_MEMORY(smb_conn->sessions.idtree_vuid); + smb_conn->sessions.idtree_limit = limit; + smb_conn->sessions.list = NULL; + + return NT_STATUS_OK; +} + +/* + * Find the session structure associated with a VUID + * (not one from an in-progress session setup) + */ +struct smbsrv_session *smbsrv_session_find(struct smbsrv_connection *smb_conn, + uint64_t vuid, struct timeval request_time) +{ + void *p; + struct smbsrv_session *sess; + + if (vuid == 0) return NULL; + + if (vuid > smb_conn->sessions.idtree_limit) return NULL; + + p = idr_find(smb_conn->sessions.idtree_vuid, vuid); + if (!p) return NULL; + + /* only return a finished session */ + sess = talloc_get_type(p, struct smbsrv_session); + if (sess && sess->session_info) { + sess->statistics.last_request_time = request_time; + return sess; + } + + return NULL; +} + +/* + * Find the session structure associated with a VUID + * (associated with an in-progress session setup) + */ +struct smbsrv_session *smbsrv_session_find_sesssetup(struct smbsrv_connection *smb_conn, uint64_t vuid) +{ + void *p; + struct smbsrv_session *sess; + + if (vuid == 0) return NULL; + + if (vuid > smb_conn->sessions.idtree_limit) return NULL; + + p = idr_find(smb_conn->sessions.idtree_vuid, vuid); + if (!p) return NULL; + + sess = talloc_get_type_abort(p, struct smbsrv_session); + + return sess; +} + +/* + * the session will be marked as valid for usage + * by attaching a auth_session_info to the session. + * + * session_info will be talloc_stealed + */ +NTSTATUS smbsrv_session_sesssetup_finished(struct smbsrv_session *sess, + struct auth_session_info *session_info) +{ + /* this check is to catch programmer errors */ + if (!session_info) { + talloc_free(sess); + return NT_STATUS_ACCESS_DENIED; + } + + /* mark the session as successful authenticated */ + sess->session_info = talloc_steal(sess, session_info); + + /* now fill in some statistics */ + sess->statistics.auth_time = timeval_current(); + + return NT_STATUS_OK; +} + +/**************************************************************************** +destroy a session structure +****************************************************************************/ +static int smbsrv_session_destructor(struct smbsrv_session *sess) +{ + struct smbsrv_connection *smb_conn = sess->smb_conn; + + idr_remove(smb_conn->sessions.idtree_vuid, sess->vuid); + DLIST_REMOVE(smb_conn->sessions.list, sess); + return 0; +} + +/* + * allocate a new session structure with a VUID. + * gensec_ctx is optional, but talloc_steal'ed when present + */ +struct smbsrv_session *smbsrv_session_new(struct smbsrv_connection *smb_conn, + TALLOC_CTX *mem_ctx, + struct gensec_security *gensec_ctx) +{ + struct smbsrv_session *sess = NULL; + int i; + + sess = talloc_zero(mem_ctx, struct smbsrv_session); + if (!sess) return NULL; + sess->smb_conn = smb_conn; + + i = idr_get_new_random( + smb_conn->sessions.idtree_vuid, + sess, + 1, + smb_conn->sessions.idtree_limit); + if (i == -1) { + DEBUG(1,("ERROR! Out of connection structures\n")); + talloc_free(sess); + return NULL; + } + sess->vuid = i; + + /* use this to keep tabs on all our info from the authentication */ + sess->gensec_ctx = talloc_steal(sess, gensec_ctx); + + DLIST_ADD(smb_conn->sessions.list, sess); + talloc_set_destructor(sess, smbsrv_session_destructor); + + /* now fill in some statistics */ + sess->statistics.connect_time = timeval_current(); + + return sess; +} |