Line data Source code
1 : /*
2 : Unix SMB/CIFS implementation.
3 : Password and authentication handling
4 : Copyright (C) Andrew Tridgell 1992-2005
5 : Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
6 : Copyright (C) Stefan Metzmacher 2005-2006
7 :
8 : This program is free software; you can redistribute it and/or modify
9 : it under the terms of the GNU General Public License as published by
10 : the Free Software Foundation; either version 3 of the License, or
11 : (at your option) any later version.
12 :
13 : This program is distributed in the hope that it will be useful,
14 : but WITHOUT ANY WARRANTY; without even the implied warranty of
15 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 : GNU General Public License for more details.
17 :
18 : You should have received a copy of the GNU General Public License
19 : along with this program. If not, see <http://www.gnu.org/licenses/>.
20 : */
21 :
22 : #include "includes.h"
23 : #include "smb_server/smb_server.h"
24 :
25 :
26 : /*
27 : * init the sessions structures
28 : */
29 3907 : NTSTATUS smbsrv_init_sessions(struct smbsrv_connection *smb_conn, uint64_t limit)
30 : {
31 : /*
32 : * the idr_* functions take 'int' as limit,
33 : * and only work with a max limit 0x00FFFFFF
34 : */
35 3907 : limit &= 0x00FFFFFF;
36 :
37 3907 : smb_conn->sessions.idtree_vuid = idr_init(smb_conn);
38 3907 : NT_STATUS_HAVE_NO_MEMORY(smb_conn->sessions.idtree_vuid);
39 3907 : smb_conn->sessions.idtree_limit = limit;
40 3907 : smb_conn->sessions.list = NULL;
41 :
42 3907 : return NT_STATUS_OK;
43 : }
44 :
45 : /*
46 : * Find the session structure associated with a VUID
47 : * (not one from an in-progress session setup)
48 : */
49 831568 : struct smbsrv_session *smbsrv_session_find(struct smbsrv_connection *smb_conn,
50 : uint64_t vuid, struct timeval request_time)
51 : {
52 : void *p;
53 : struct smbsrv_session *sess;
54 :
55 831568 : if (vuid == 0) return NULL;
56 :
57 826196 : if (vuid > smb_conn->sessions.idtree_limit) return NULL;
58 :
59 826196 : p = idr_find(smb_conn->sessions.idtree_vuid, vuid);
60 826196 : if (!p) return NULL;
61 :
62 : /* only return a finished session */
63 826172 : sess = talloc_get_type(p, struct smbsrv_session);
64 826172 : if (sess && sess->session_info) {
65 825792 : sess->statistics.last_request_time = request_time;
66 825792 : return sess;
67 : }
68 :
69 380 : return NULL;
70 : }
71 :
72 : /*
73 : * Find the session structure associated with a VUID
74 : * (associated with an in-progress session setup)
75 : */
76 383 : struct smbsrv_session *smbsrv_session_find_sesssetup(struct smbsrv_connection *smb_conn, uint64_t vuid)
77 : {
78 : void *p;
79 : struct smbsrv_session *sess;
80 :
81 383 : if (vuid == 0) return NULL;
82 :
83 383 : if (vuid > smb_conn->sessions.idtree_limit) return NULL;
84 :
85 383 : p = idr_find(smb_conn->sessions.idtree_vuid, vuid);
86 383 : if (!p) return NULL;
87 :
88 382 : sess = talloc_get_type_abort(p, struct smbsrv_session);
89 :
90 382 : return sess;
91 : }
92 :
93 : /*
94 : * the session will be marked as valid for usage
95 : * by attaching a auth_session_info to the session.
96 : *
97 : * session_info will be talloc_stealed
98 : */
99 2628 : NTSTATUS smbsrv_session_sesssetup_finished(struct smbsrv_session *sess,
100 : struct auth_session_info *session_info)
101 : {
102 : /* this check is to catch programmer errors */
103 2628 : if (!session_info) {
104 0 : talloc_free(sess);
105 0 : return NT_STATUS_ACCESS_DENIED;
106 : }
107 :
108 : /* mark the session as successful authenticated */
109 2628 : sess->session_info = talloc_steal(sess, session_info);
110 :
111 : /* now fill in some statistics */
112 2628 : sess->statistics.auth_time = timeval_current();
113 :
114 2628 : return NT_STATUS_OK;
115 : }
116 :
117 : /****************************************************************************
118 : destroy a session structure
119 : ****************************************************************************/
120 2741 : static int smbsrv_session_destructor(struct smbsrv_session *sess)
121 : {
122 2741 : struct smbsrv_connection *smb_conn = sess->smb_conn;
123 :
124 2741 : idr_remove(smb_conn->sessions.idtree_vuid, sess->vuid);
125 2741 : DLIST_REMOVE(smb_conn->sessions.list, sess);
126 2741 : return 0;
127 : }
128 :
129 : /*
130 : * allocate a new session structure with a VUID.
131 : * gensec_ctx is optional, but talloc_steal'ed when present
132 : */
133 2741 : struct smbsrv_session *smbsrv_session_new(struct smbsrv_connection *smb_conn,
134 : TALLOC_CTX *mem_ctx,
135 : struct gensec_security *gensec_ctx)
136 : {
137 2741 : struct smbsrv_session *sess = NULL;
138 : int i;
139 :
140 2741 : sess = talloc_zero(mem_ctx, struct smbsrv_session);
141 2741 : if (!sess) return NULL;
142 2741 : sess->smb_conn = smb_conn;
143 :
144 2741 : i = idr_get_new_random(smb_conn->sessions.idtree_vuid, sess, smb_conn->sessions.idtree_limit);
145 2741 : if (i == -1) {
146 0 : DEBUG(1,("ERROR! Out of connection structures\n"));
147 0 : talloc_free(sess);
148 0 : return NULL;
149 : }
150 2741 : sess->vuid = i;
151 :
152 : /* use this to keep tabs on all our info from the authentication */
153 2741 : sess->gensec_ctx = talloc_steal(sess, gensec_ctx);
154 :
155 2741 : DLIST_ADD(smb_conn->sessions.list, sess);
156 2741 : talloc_set_destructor(sess, smbsrv_session_destructor);
157 :
158 : /* now fill in some statistics */
159 2741 : sess->statistics.connect_time = timeval_current();
160 :
161 2741 : return sess;
162 : }
|
