/* 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/dlinklist.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 assoicated 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 assoicated with a VUID * (assoicated 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; /* only return an unfinished session */ sess = talloc_get_type(p, struct smbsrv_session); if (sess && !sess->session_info) { return sess; } return NULL; } /* * 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; /* Ensure no vuid gets registered in share level security. */ if (smb_conn->config.security == SEC_SHARE) return NULL; 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, 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; }