source: branches/samba-3.3.x/source/auth/auth_builtin.c

Last change on this file was 206, checked in by Herwig Bauernfeind, 16 years ago

Import Samba 3.3 branch at 3.0.0 level (psmedley's port)
File size: 5.2 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3 Generic authentication types
4 Copyright (C) Andrew Bartlett 2001-2002
5 Copyright (C) Jelmer Vernooij 2002
6
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.
11
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.
16
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/>.
19*/
20
21#include "includes.h"
22
23#undef DBGC_CLASS
24#define DBGC_CLASS DBGC_AUTH
25
26/**
27 * Return a guest logon for guest users (username = "")
28 *
29 * Typically used as the first module in the auth chain, this allows
30 * guest logons to be dealt with in one place. Non-guest logons 'fail'
31 * and pass onto the next module.
32 **/
33
34static NTSTATUS check_guest_security(const struct auth_context *auth_context,
35 void *my_private_data,
36 TALLOC_CTX *mem_ctx,
37 const auth_usersupplied_info *user_info,
38 auth_serversupplied_info **server_info)
39{
40 /* mark this as 'not for me' */
41 NTSTATUS nt_status = NT_STATUS_NOT_IMPLEMENTED;
42
43 if (!(user_info->internal_username
44 && *user_info->internal_username)) {
45 nt_status = make_server_info_guest(NULL, server_info);
46 }
47
48 return nt_status;
49}
50
51/* Guest modules initialisation */
52
53static NTSTATUS auth_init_guest(struct auth_context *auth_context, const char *options, auth_methods **auth_method)
54{
55 if (!make_auth_methods(auth_context, auth_method))
56 return NT_STATUS_NO_MEMORY;
57
58 (*auth_method)->auth = check_guest_security;
59 (*auth_method)->name = "guest";
60 return NT_STATUS_OK;
61}
62
63#ifdef DEVELOPER
64/**
65 * Return an error based on username
66 *
67 * This function allows the testing of obsure errors, as well as the generation
68 * of NT_STATUS -> DOS error mapping tables.
69 *
70 * This module is of no value to end-users.
71 *
72 * The password is ignored.
73 *
74 * @return An NTSTATUS value based on the username
75 **/
76
77static NTSTATUS check_name_to_ntstatus_security(const struct auth_context *auth_context,
78 void *my_private_data,
79 TALLOC_CTX *mem_ctx,
80 const auth_usersupplied_info *user_info,
81 auth_serversupplied_info **server_info)
82{
83 NTSTATUS nt_status;
84 fstring user;
85 long error_num;
86 fstrcpy(user, user_info->smb_name);
87
88 if (strnequal("NT_STATUS", user, strlen("NT_STATUS"))) {
89 strupper_m(user);
90 return nt_status_string_to_code(user);
91 }
92
93 strlower_m(user);
94 error_num = strtoul(user, NULL, 16);
95
96 DEBUG(5,("check_name_to_ntstatus_security: Error for user %s was %lx\n", user, error_num));
97
98 nt_status = NT_STATUS(error_num);
99
100 return nt_status;
101}
102
103/** Module initialisation function */
104
105static NTSTATUS auth_init_name_to_ntstatus(struct auth_context *auth_context, const char *param, auth_methods **auth_method)
106{
107 if (!make_auth_methods(auth_context, auth_method))
108 return NT_STATUS_NO_MEMORY;
109
110 (*auth_method)->auth = check_name_to_ntstatus_security;
111 (*auth_method)->name = "name_to_ntstatus";
112 return NT_STATUS_OK;
113}
114
115/**
116 * Return a 'fixed' challenge instead of a variable one.
117 *
118 * The idea of this function is to make packet snifs consistant
119 * with a fixed challenge, so as to aid debugging.
120 *
121 * This module is of no value to end-users.
122 *
123 * This module does not actually authenticate the user, but
124 * just pretenteds to need a specified challenge.
125 * This module removes *all* security from the challenge-response system
126 *
127 * @return NT_STATUS_UNSUCCESSFUL
128 **/
129
130static NTSTATUS check_fixed_challenge_security(const struct auth_context *auth_context,
131 void *my_private_data,
132 TALLOC_CTX *mem_ctx,
133 const auth_usersupplied_info *user_info,
134 auth_serversupplied_info **server_info)
135{
136 return NT_STATUS_NOT_IMPLEMENTED;
137}
138
139/****************************************************************************
140 Get the challenge out of a password server.
141****************************************************************************/
142
143static DATA_BLOB auth_get_fixed_challenge(const struct auth_context *auth_context,
144 void **my_private_data,
145 TALLOC_CTX *mem_ctx)
146{
147 const char *challenge = "I am a teapot";
148 return data_blob(challenge, 8);
149}
150
151
152/** Module initailisation function */
153
154static NTSTATUS auth_init_fixed_challenge(struct auth_context *auth_context, const char *param, auth_methods **auth_method)
155{
156 if (!make_auth_methods(auth_context, auth_method))
157 return NT_STATUS_NO_MEMORY;
158
159 (*auth_method)->auth = check_fixed_challenge_security;
160 (*auth_method)->get_chal = auth_get_fixed_challenge;
161 (*auth_method)->name = "fixed_challenge";
162 return NT_STATUS_OK;
163}
164#endif /* DEVELOPER */
165
166NTSTATUS auth_builtin_init(void)
167{
168 smb_register_auth(AUTH_INTERFACE_VERSION, "guest", auth_init_guest);
169#ifdef DEVELOPER
170 smb_register_auth(AUTH_INTERFACE_VERSION, "fixed_challenge", auth_init_fixed_challenge);
171 smb_register_auth(AUTH_INTERFACE_VERSION, "name_to_ntstatus", auth_init_name_to_ntstatus);
172#endif
173 return NT_STATUS_OK;
174}
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