s3:smbd: s/struct timed_event/struct tevent_timer
[Samba/gebeck_regimport.git] / source3 / smbd / password.c
blob3a64d1b13845307d7dab05bfd8d565c492f65deb
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 /* Fix up prototypes for OSX 10.4, where they're missing */
30 #ifndef HAVE_SETNETGRENT_PROTOTYPE
31 extern int setnetgrent(const char* netgroup);
32 #endif
33 #ifndef HAVE_GETNETGRENT_PROTOTYPE
34 extern int getnetgrent(char **host, char **user, char **domain);
35 #endif
36 #ifndef HAVE_ENDNETGRENT_PROTOTYPE
37 extern void endnetgrent(void);
38 #endif
40 enum server_allocated_state { SERVER_ALLOCATED_REQUIRED_YES,
41 SERVER_ALLOCATED_REQUIRED_NO,
42 SERVER_ALLOCATED_REQUIRED_ANY};
44 static struct user_struct *get_valid_user_struct_internal(
45 struct smbd_server_connection *sconn,
46 uint64_t vuid,
47 enum server_allocated_state server_allocated)
49 struct user_struct *usp;
50 int count=0;
52 if (vuid == UID_FIELD_INVALID)
53 return NULL;
55 usp=sconn->users;
56 for (;usp;usp=usp->next,count++) {
57 if (vuid == usp->vuid) {
58 switch (server_allocated) {
59 case SERVER_ALLOCATED_REQUIRED_YES:
60 if (usp->session_info == NULL) {
61 continue;
63 break;
64 case SERVER_ALLOCATED_REQUIRED_NO:
65 if (usp->session_info != NULL) {
66 continue;
68 case SERVER_ALLOCATED_REQUIRED_ANY:
69 break;
71 if (count > 10) {
72 DLIST_PROMOTE(sconn->users, usp);
74 return usp;
78 return NULL;
81 /****************************************************************************
82 Check if a uid has been validated, and return an pointer to the user_struct
83 if it has. NULL if not. vuid is biased by an offset. This allows us to
84 tell random client vuid's (normally zero) from valid vuids.
85 ****************************************************************************/
87 struct user_struct *get_valid_user_struct(struct smbd_server_connection *sconn,
88 uint64_t vuid)
90 return get_valid_user_struct_internal(sconn, vuid,
91 SERVER_ALLOCATED_REQUIRED_YES);
94 /****************************************************************************
95 Invalidate a uid.
96 ****************************************************************************/
98 void invalidate_vuid(struct smbd_server_connection *sconn, uint64_t vuid)
100 struct user_struct *vuser = NULL;
102 vuser = get_valid_user_struct_internal(sconn, vuid,
103 SERVER_ALLOCATED_REQUIRED_ANY);
104 if (vuser == NULL) {
105 return;
108 session_yield(vuser->session);
110 DLIST_REMOVE(sconn->users, vuser);
111 SMB_ASSERT(sconn->num_users > 0);
112 sconn->num_users--;
114 /* clear the vuid from the 'cache' on each connection, and
115 from the vuid 'owner' of connections */
116 conn_clear_vuid_caches(sconn, vuid);
118 TALLOC_FREE(vuser);
121 int register_homes_share(const char *username)
123 int result;
124 struct passwd *pwd;
126 result = lp_servicenumber(username);
127 if (result != -1) {
128 DEBUG(3, ("Using static (or previously created) service for "
129 "user '%s'; path = '%s'\n", username,
130 lp_pathname(talloc_tos(), result)));
131 return result;
134 pwd = Get_Pwnam_alloc(talloc_tos(), username);
136 if ((pwd == NULL) || (pwd->pw_dir[0] == '\0')) {
137 DEBUG(3, ("No home directory defined for user '%s'\n",
138 username));
139 TALLOC_FREE(pwd);
140 return -1;
143 DEBUG(3, ("Adding homes service for user '%s' using home directory: "
144 "'%s'\n", username, pwd->pw_dir));
146 result = add_home_service(username, username, pwd->pw_dir);
148 TALLOC_FREE(pwd);
149 return result;