s4:libcli: split out smb_raw_negotiate_fill_transport()
[Samba.git] / source3 / smbd / password.c
blobf472bda2c70e03eddbafc22e8259198194bcdc0c
1 /*
2 Unix SMB/CIFS implementation.
3 Password and authentication handling
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Jeremy Allison 2007.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
21 #include "includes.h"
22 #include "system/passwd.h"
23 #include "smbd/smbd.h"
24 #include "smbd/globals.h"
25 #include "../librpc/gen_ndr/netlogon.h"
26 #include "auth.h"
27 #include "../libcli/security/security.h"
29 enum server_allocated_state { SERVER_ALLOCATED_REQUIRED_YES,
30 SERVER_ALLOCATED_REQUIRED_NO,
31 SERVER_ALLOCATED_REQUIRED_ANY};
33 static struct user_struct *get_valid_user_struct_internal(
34 struct smbd_server_connection *sconn,
35 uint64_t vuid,
36 enum server_allocated_state server_allocated)
38 struct user_struct *usp;
39 int count=0;
41 if (vuid == UID_FIELD_INVALID)
42 return NULL;
44 usp=sconn->users;
45 for (;usp;usp=usp->next,count++) {
46 if (vuid == usp->vuid) {
47 switch (server_allocated) {
48 case SERVER_ALLOCATED_REQUIRED_YES:
49 if (usp->session_info == NULL) {
50 continue;
52 break;
53 case SERVER_ALLOCATED_REQUIRED_NO:
54 if (usp->session_info != NULL) {
55 continue;
57 case SERVER_ALLOCATED_REQUIRED_ANY:
58 break;
60 if (count > 10) {
61 DLIST_PROMOTE(sconn->users, usp);
63 return usp;
67 return NULL;
70 /****************************************************************************
71 Check if a uid has been validated, and return an pointer to the user_struct
72 if it has. NULL if not. vuid is biased by an offset. This allows us to
73 tell random client vuid's (normally zero) from valid vuids.
74 ****************************************************************************/
76 struct user_struct *get_valid_user_struct(struct smbd_server_connection *sconn,
77 uint64_t vuid)
79 return get_valid_user_struct_internal(sconn, vuid,
80 SERVER_ALLOCATED_REQUIRED_YES);
83 /****************************************************************************
84 Invalidate a uid.
85 ****************************************************************************/
87 void invalidate_vuid(struct smbd_server_connection *sconn, uint64_t vuid)
89 struct user_struct *vuser = NULL;
91 vuser = get_valid_user_struct_internal(sconn, vuid,
92 SERVER_ALLOCATED_REQUIRED_ANY);
93 if (vuser == NULL) {
94 return;
97 session_yield(vuser->session);
99 DLIST_REMOVE(sconn->users, vuser);
100 SMB_ASSERT(sconn->num_users > 0);
101 sconn->num_users--;
103 /* clear the vuid from the 'cache' on each connection, and
104 from the vuid 'owner' of connections */
105 conn_clear_vuid_caches(sconn, vuid);
107 TALLOC_FREE(vuser);
110 int register_homes_share(const char *username)
112 int result;
113 struct passwd *pwd;
115 result = lp_servicenumber(username);
116 if (result != -1) {
117 DEBUG(3, ("Using static (or previously created) service for "
118 "user '%s'; path = '%s'\n", username,
119 lp_path(talloc_tos(), result)));
120 return result;
123 pwd = Get_Pwnam_alloc(talloc_tos(), username);
125 if ((pwd == NULL) || (pwd->pw_dir[0] == '\0')) {
126 DEBUG(3, ("No home directory defined for user '%s'\n",
127 username));
128 TALLOC_FREE(pwd);
129 return -1;
132 DEBUG(3, ("Adding homes service for user '%s' using home directory: "
133 "'%s'\n", username, pwd->pw_dir));
135 result = add_home_service(username, username, pwd->pw_dir);
137 TALLOC_FREE(pwd);
138 return result;