source: trunk-3.0/source/auth/auth_ntlmssp.c@ 101

Last change on this file since 101 was 1, checked in by Paul Smedley, 18 years ago

Initial code import
File size: 7.3 KB
Line 
1/*
2 Unix SMB/Netbios implementation.
3 Version 3.0
4 handle NLTMSSP, server side
5
6 Copyright (C) Andrew Tridgell 2001
7 Copyright (C) Andrew Bartlett 2001-2003
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22*/
23
24#include "includes.h"
25
26/**
27 * Return the challenge as determined by the authentication subsystem
28 * @return an 8 byte random challenge
29 */
30
31static const uint8 *auth_ntlmssp_get_challenge(const struct ntlmssp_state *ntlmssp_state)
32{
33 AUTH_NTLMSSP_STATE *auth_ntlmssp_state =
34 (AUTH_NTLMSSP_STATE *)ntlmssp_state->auth_context;
35 return auth_ntlmssp_state->auth_context->get_ntlm_challenge(auth_ntlmssp_state->auth_context);
36}
37
38/**
39 * Some authentication methods 'fix' the challenge, so we may not be able to set it
40 *
41 * @return If the effective challenge used by the auth subsystem may be modified
42 */
43static BOOL auth_ntlmssp_may_set_challenge(const struct ntlmssp_state *ntlmssp_state)
44{
45 AUTH_NTLMSSP_STATE *auth_ntlmssp_state =
46 (AUTH_NTLMSSP_STATE *)ntlmssp_state->auth_context;
47 struct auth_context *auth_context = auth_ntlmssp_state->auth_context;
48
49 return auth_context->challenge_may_be_modified;
50}
51
52/**
53 * NTLM2 authentication modifies the effective challenge,
54 * @param challenge The new challenge value
55 */
56static NTSTATUS auth_ntlmssp_set_challenge(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *challenge)
57{
58 AUTH_NTLMSSP_STATE *auth_ntlmssp_state =
59 (AUTH_NTLMSSP_STATE *)ntlmssp_state->auth_context;
60 struct auth_context *auth_context = auth_ntlmssp_state->auth_context;
61
62 SMB_ASSERT(challenge->length == 8);
63
64 auth_context->challenge = data_blob_talloc(auth_context->mem_ctx,
65 challenge->data, challenge->length);
66
67 auth_context->challenge_set_by = "NTLMSSP callback (NTLM2)";
68
69 DEBUG(5, ("auth_context challenge set by %s\n", auth_context->challenge_set_by));
70 DEBUG(5, ("challenge is: \n"));
71 dump_data(5, (const char *)auth_context->challenge.data, auth_context->challenge.length);
72 return NT_STATUS_OK;
73}
74
75/**
76 * Check the password on an NTLMSSP login.
77 *
78 * Return the session keys used on the connection.
79 */
80
81static NTSTATUS auth_ntlmssp_check_password(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *user_session_key, DATA_BLOB *lm_session_key)
82{
83 AUTH_NTLMSSP_STATE *auth_ntlmssp_state =
84 (AUTH_NTLMSSP_STATE *)ntlmssp_state->auth_context;
85 auth_usersupplied_info *user_info = NULL;
86 NTSTATUS nt_status;
87 BOOL username_was_mapped;
88
89 /* the client has given us its machine name (which we otherwise would not get on port 445).
90 we need to possibly reload smb.conf if smb.conf includes depend on the machine name */
91
92 set_remote_machine_name(auth_ntlmssp_state->ntlmssp_state->workstation, True);
93
94 /* setup the string used by %U */
95 /* sub_set_smb_name checks for weird internally */
96 sub_set_smb_name(auth_ntlmssp_state->ntlmssp_state->user);
97
98 reload_services(True);
99
100 nt_status = make_user_info_map(&user_info,
101 auth_ntlmssp_state->ntlmssp_state->user,
102 auth_ntlmssp_state->ntlmssp_state->domain,
103 auth_ntlmssp_state->ntlmssp_state->workstation,
104 auth_ntlmssp_state->ntlmssp_state->lm_resp.data ? &auth_ntlmssp_state->ntlmssp_state->lm_resp : NULL,
105 auth_ntlmssp_state->ntlmssp_state->nt_resp.data ? &auth_ntlmssp_state->ntlmssp_state->nt_resp : NULL,
106 NULL, NULL, NULL,
107 True);
108
109 user_info->logon_parameters = MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT | MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT;
110
111 if (!NT_STATUS_IS_OK(nt_status)) {
112 return nt_status;
113 }
114
115 nt_status = auth_ntlmssp_state->auth_context->check_ntlm_password(auth_ntlmssp_state->auth_context,
116 user_info, &auth_ntlmssp_state->server_info);
117
118 username_was_mapped = user_info->was_mapped;
119
120 free_user_info(&user_info);
121
122 if (!NT_STATUS_IS_OK(nt_status)) {
123 return nt_status;
124 }
125
126 auth_ntlmssp_state->server_info->was_mapped |= username_was_mapped;
127
128 nt_status = create_local_token(auth_ntlmssp_state->server_info);
129
130 if (!NT_STATUS_IS_OK(nt_status)) {
131 DEBUG(10, ("create_local_token failed\n"));
132 return nt_status;
133 }
134
135 if (auth_ntlmssp_state->server_info->user_session_key.length) {
136 DEBUG(10, ("Got NT session key of length %u\n",
137 (unsigned int)auth_ntlmssp_state->server_info->user_session_key.length));
138 *user_session_key = data_blob_talloc(auth_ntlmssp_state->mem_ctx,
139 auth_ntlmssp_state->server_info->user_session_key.data,
140 auth_ntlmssp_state->server_info->user_session_key.length);
141 }
142 if (auth_ntlmssp_state->server_info->lm_session_key.length) {
143 DEBUG(10, ("Got LM session key of length %u\n",
144 (unsigned int)auth_ntlmssp_state->server_info->lm_session_key.length));
145 *lm_session_key = data_blob_talloc(auth_ntlmssp_state->mem_ctx,
146 auth_ntlmssp_state->server_info->lm_session_key.data,
147 auth_ntlmssp_state->server_info->lm_session_key.length);
148 }
149 return nt_status;
150}
151
152NTSTATUS auth_ntlmssp_start(AUTH_NTLMSSP_STATE **auth_ntlmssp_state)
153{
154 NTSTATUS nt_status;
155 TALLOC_CTX *mem_ctx;
156
157 mem_ctx = talloc_init("AUTH NTLMSSP context");
158
159 *auth_ntlmssp_state = TALLOC_ZERO_P(mem_ctx, AUTH_NTLMSSP_STATE);
160 if (!*auth_ntlmssp_state) {
161 DEBUG(0,("auth_ntlmssp_start: talloc failed!\n"));
162 talloc_destroy(mem_ctx);
163 return NT_STATUS_NO_MEMORY;
164 }
165
166 ZERO_STRUCTP(*auth_ntlmssp_state);
167
168 (*auth_ntlmssp_state)->mem_ctx = mem_ctx;
169
170 if (!NT_STATUS_IS_OK(nt_status = ntlmssp_server_start(&(*auth_ntlmssp_state)->ntlmssp_state))) {
171 return nt_status;
172 }
173
174 if (!NT_STATUS_IS_OK(nt_status = make_auth_context_subsystem(&(*auth_ntlmssp_state)->auth_context))) {
175 return nt_status;
176 }
177
178 (*auth_ntlmssp_state)->ntlmssp_state->auth_context = (*auth_ntlmssp_state);
179 (*auth_ntlmssp_state)->ntlmssp_state->get_challenge = auth_ntlmssp_get_challenge;
180 (*auth_ntlmssp_state)->ntlmssp_state->may_set_challenge = auth_ntlmssp_may_set_challenge;
181 (*auth_ntlmssp_state)->ntlmssp_state->set_challenge = auth_ntlmssp_set_challenge;
182 (*auth_ntlmssp_state)->ntlmssp_state->check_password = auth_ntlmssp_check_password;
183 (*auth_ntlmssp_state)->ntlmssp_state->server_role = (enum server_types)lp_server_role();
184
185 return NT_STATUS_OK;
186}
187
188void auth_ntlmssp_end(AUTH_NTLMSSP_STATE **auth_ntlmssp_state)
189{
190 TALLOC_CTX *mem_ctx = (*auth_ntlmssp_state)->mem_ctx;
191
192 if ((*auth_ntlmssp_state)->ntlmssp_state) {
193 ntlmssp_end(&(*auth_ntlmssp_state)->ntlmssp_state);
194 }
195 if ((*auth_ntlmssp_state)->auth_context) {
196 ((*auth_ntlmssp_state)->auth_context->free)(&(*auth_ntlmssp_state)->auth_context);
197 }
198 if ((*auth_ntlmssp_state)->server_info) {
199 TALLOC_FREE((*auth_ntlmssp_state)->server_info);
200 }
201 talloc_destroy(mem_ctx);
202 *auth_ntlmssp_state = NULL;
203}
204
205NTSTATUS auth_ntlmssp_update(AUTH_NTLMSSP_STATE *auth_ntlmssp_state,
206 const DATA_BLOB request, DATA_BLOB *reply)
207{
208 return ntlmssp_update(auth_ntlmssp_state->ntlmssp_state, request, reply);
209}
Note: See TracBrowser for help on using the repository browser.