1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
/*
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 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 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(void *p)
{
struct smbsrv_session *sess = talloc_get_type(p, struct smbsrv_session);
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,
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(smb_conn, 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;
}
|
