2 Unix SMB/CIFS implementation.
3 Generic authenticaion types
4 Copyright (C) Andrew Bartlett 2001-2002
5 Copyright (C) Jelmer Vernooij 2002
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 2 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, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 #define DBGC_CLASS DBGC_AUTH
28 * Return a guest logon for guest users (username = "")
30 * Typically used as the first module in the auth chain, this allows
31 * guest logons to be dealt with in one place. Non-guest logons 'fail'
32 * and pass onto the next module.
35 static NTSTATUS
check_guest_security(const struct auth_context
*auth_context
,
36 void *my_private_data
,
38 const auth_usersupplied_info
*user_info
,
39 auth_serversupplied_info
**server_info
)
41 NTSTATUS nt_status
= NT_STATUS_LOGON_FAILURE
;
43 if (!(user_info
->internal_username
.str
44 && *user_info
->internal_username
.str
)) {
45 nt_status
= make_server_info_guest(server_info
);
51 /* Guest modules initialisation */
53 NTSTATUS
auth_init_guest(struct auth_context
*auth_context
, const char *options
, auth_methods
**auth_method
)
55 if (!make_auth_methods(auth_context
, auth_method
))
56 return NT_STATUS_NO_MEMORY
;
58 (*auth_method
)->auth
= check_guest_security
;
59 (*auth_method
)->name
= "guest";
64 * Return an error based on username
66 * This function allows the testing of obsure errors, as well as the generation
67 * of NT_STATUS -> DOS error mapping tables.
69 * This module is of no value to end-users.
71 * The password is ignored.
73 * @return An NTSTATUS value based on the username
76 static NTSTATUS
check_name_to_ntstatus_security(const struct auth_context
*auth_context
,
77 void *my_private_data
,
79 const auth_usersupplied_info
*user_info
,
80 auth_serversupplied_info
**server_info
)
85 fstrcpy(user
, user_info
->smb_name
.str
);
87 if (strncasecmp("NT_STATUS", user
, strlen("NT_STATUS")) == 0) {
89 return nt_status_string_to_code(user
);
93 error_num
= strtoul(user
, NULL
, 16);
95 DEBUG(5,("check_name_to_ntstatus_security: Error for user %s was %lx\n", user
, error_num
));
97 nt_status
= NT_STATUS(error_num
);
102 /** Module initailisation function */
104 NTSTATUS
auth_init_name_to_ntstatus(struct auth_context
*auth_context
, const char *param
, auth_methods
**auth_method
)
106 if (!make_auth_methods(auth_context
, auth_method
))
107 return NT_STATUS_NO_MEMORY
;
109 (*auth_method
)->auth
= check_name_to_ntstatus_security
;
110 (*auth_method
)->name
= "name_to_ntstatus";
115 * Return a 'fixed' challenge instead of a varaible one.
117 * The idea of this function is to make packet snifs consistant
118 * with a fixed challenge, so as to aid debugging.
120 * This module is of no value to end-users.
122 * This module does not actually authenticate the user, but
123 * just pretenteds to need a specified challenge.
124 * This module removes *all* security from the challenge-response system
126 * @return NT_STATUS_UNSUCCESSFUL
129 static NTSTATUS
check_fixed_challenge_security(const struct auth_context
*auth_context
,
130 void *my_private_data
,
132 const auth_usersupplied_info
*user_info
,
133 auth_serversupplied_info
**server_info
)
135 return NT_STATUS_UNSUCCESSFUL
;
138 /****************************************************************************
139 Get the challenge out of a password server.
140 ****************************************************************************/
142 static DATA_BLOB
auth_get_fixed_challenge(const struct auth_context
*auth_context
,
143 void **my_private_data
,
146 const char *challenge
= "I am a teapot";
147 return data_blob(challenge
, 8);
151 /** Module initailisation function */
153 NTSTATUS
auth_init_fixed_challenge(struct auth_context
*auth_context
, const char *param
, auth_methods
**auth_method
)
155 if (!make_auth_methods(auth_context
, auth_method
))
156 return NT_STATUS_NO_MEMORY
;
158 (*auth_method
)->auth
= check_fixed_challenge_security
;
159 (*auth_method
)->get_chal
= auth_get_fixed_challenge
;
160 (*auth_method
)->name
= "fixed_challenge";
165 * Outsorce an auth module to an external loadable .so
167 * Only works on systems with dlopen() etc.
170 /* Plugin modules initialisation */
172 NTSTATUS
auth_init_plugin(struct auth_context
*auth_context
, const char *param
, auth_methods
**auth_method
)
175 char *plugin_param
, *plugin_name
, *p
;
176 auth_init_function plugin_init
;
179 DEBUG(0, ("auth_init_plugin: The plugin module needs an argument!\n"));
180 return NT_STATUS_UNSUCCESSFUL
;
183 plugin_name
= smb_xstrdup(param
);
184 p
= strchr(plugin_name
, ':');
188 trim_string(plugin_param
, " ", " ");
189 } else plugin_param
= NULL
;
191 trim_string(plugin_name
, " ", " ");
193 DEBUG(5, ("auth_init_plugin: Trying to load auth plugin %s\n", plugin_name
));
194 dl_handle
= sys_dlopen(plugin_name
, RTLD_NOW
);
196 DEBUG(0, ("auth_init_plugin: Failed to load auth plugin %s using sys_dlopen (%s)\n",
197 plugin_name
, sys_dlerror()));
198 return NT_STATUS_UNSUCCESSFUL
;
201 plugin_init
= sys_dlsym(dl_handle
, "auth_init");
203 DEBUG(0, ("Failed to find function 'auth_init' using sys_dlsym in sam plugin %s (%s)\n",
204 plugin_name
, sys_dlerror()));
205 return NT_STATUS_UNSUCCESSFUL
;
208 DEBUG(5, ("Starting sam plugin %s with paramater %s\n", plugin_name
, plugin_param
?plugin_param
:"(null)"));
209 return plugin_init(auth_context
, plugin_param
, auth_method
);