source: branches/samba-3.5.x/source4/auth/ntlm/auth_server.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 16 years ago

Samba 3.5.0: Initial import
File size: 7.6 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3 Authenticate by using a remote server
4 Copyright (C) Andrew Bartlett 2001-2002, 2008
5 Copyright (C) Jelmer Vernooij 2002
6 Copyright (C) Stefan Metzmacher 2005
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
20*/
21
22#include "includes.h"
23#include "auth/auth.h"
24#include "auth/ntlm/auth_proto.h"
25#include "auth/credentials/credentials.h"
26#include "libcli/security/security.h"
27#include "librpc/gen_ndr/ndr_samr.h"
28#include "libcli/smb_composite/smb_composite.h"
29#include "param/param.h"
30#include "libcli/resolve/resolve.h"
31
32/* This version of 'security=server' rewirtten from scratch for Samba4
33 * libraries in 2008 */
34
35
36static NTSTATUS server_want_check(struct auth_method_context *ctx,
37 TALLOC_CTX *mem_ctx,
38 const struct auth_usersupplied_info *user_info)
39{
40 return NT_STATUS_OK;
41}
42/**
43 * The challenge from the target server, when operating in security=server
44 **/
45static NTSTATUS server_get_challenge(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, DATA_BLOB *_blob)
46{
47 struct smb_composite_connect io;
48 struct smbcli_options smb_options;
49 const char **host_list;
50 NTSTATUS status;
51
52 /* Make a connection to the target server, found by 'password server' in smb.conf */
53
54 lp_smbcli_options(ctx->auth_ctx->lp_ctx, &smb_options);
55
56 /* Make a negprot, WITHOUT SPNEGO, so we get a challenge nice an easy */
57 io.in.options.use_spnego = false;
58
59 /* Hope we don't get * (the default), as this won't work... */
60 host_list = lp_passwordserver(ctx->auth_ctx->lp_ctx);
61 if (!host_list) {
62 return NT_STATUS_INTERNAL_ERROR;
63 }
64 io.in.dest_host = host_list[0];
65 if (strequal(io.in.dest_host, "*")) {
66 return NT_STATUS_INTERNAL_ERROR;
67 }
68 io.in.dest_ports = lp_smb_ports(ctx->auth_ctx->lp_ctx);
69 io.in.socket_options = lp_socket_options(ctx->auth_ctx->lp_ctx);
70 io.in.gensec_settings = lp_gensec_settings(mem_ctx, ctx->auth_ctx->lp_ctx);
71
72 io.in.called_name = strupper_talloc(mem_ctx, io.in.dest_host);
73
74 /* We don't want to get as far as the session setup */
75 io.in.credentials = cli_credentials_init_anon(mem_ctx);
76 cli_credentials_set_workstation(io.in.credentials,
77 lp_netbios_name(ctx->auth_ctx->lp_ctx),
78 CRED_SPECIFIED);
79
80 io.in.service = NULL;
81
82 io.in.workgroup = ""; /* only used with SPNEGO, disabled above */
83
84 io.in.options = smb_options;
85
86 io.in.iconv_convenience = lp_iconv_convenience(ctx->auth_ctx->lp_ctx);
87 lp_smbcli_session_options(ctx->auth_ctx->lp_ctx, &io.in.session_options);
88
89 status = smb_composite_connect(&io, mem_ctx, lp_resolve_context(ctx->auth_ctx->lp_ctx),
90 ctx->auth_ctx->event_ctx);
91 NT_STATUS_NOT_OK_RETURN(status);
92
93 *_blob = io.out.tree->session->transport->negotiate.secblob;
94 ctx->private_data = talloc_steal(ctx, io.out.tree->session);
95 return NT_STATUS_OK;
96}
97
98/**
99 * Return an error based on username
100 *
101 * This function allows the testing of obsure errors, as well as the generation
102 * of NT_STATUS -> DOS error mapping tables.
103 *
104 * This module is of no value to end-users.
105 *
106 * The password is ignored.
107 *
108 * @return An NTSTATUS value based on the username
109 **/
110
111static NTSTATUS server_check_password(struct auth_method_context *ctx,
112 TALLOC_CTX *mem_ctx,
113 const struct auth_usersupplied_info *user_info,
114 struct auth_serversupplied_info **_server_info)
115{
116 NTSTATUS nt_status;
117 struct auth_serversupplied_info *server_info;
118 struct cli_credentials *creds;
119 struct smb_composite_sesssetup session_setup;
120
121 struct smbcli_session *session = talloc_get_type(ctx->private_data, struct smbcli_session);
122
123 creds = cli_credentials_init(mem_ctx);
124
125 NT_STATUS_HAVE_NO_MEMORY(creds);
126
127 cli_credentials_set_username(creds, user_info->client.account_name, CRED_SPECIFIED);
128 cli_credentials_set_domain(creds, user_info->client.domain_name, CRED_SPECIFIED);
129
130 switch (user_info->password_state) {
131 case AUTH_PASSWORD_PLAIN:
132 cli_credentials_set_password(creds, user_info->password.plaintext,
133 CRED_SPECIFIED);
134 break;
135 case AUTH_PASSWORD_HASH:
136 cli_credentials_set_nt_hash(creds, user_info->password.hash.nt,
137 CRED_SPECIFIED);
138 break;
139
140 case AUTH_PASSWORD_RESPONSE:
141 cli_credentials_set_ntlm_response(creds, &user_info->password.response.lanman, &user_info->password.response.nt, CRED_SPECIFIED);
142 break;
143 }
144
145 session_setup.in.sesskey = session->transport->negotiate.sesskey;
146 session_setup.in.capabilities = session->transport->negotiate.capabilities;
147
148 session_setup.in.credentials = creds;
149 session_setup.in.workgroup = ""; /* Only used with SPNEGO, which we are not doing */
150 session_setup.in.gensec_settings = lp_gensec_settings(session, ctx->auth_ctx->lp_ctx);
151
152 /* Check password with remove server - this should be async some day */
153 nt_status = smb_composite_sesssetup(session, &session_setup);
154
155 if (!NT_STATUS_IS_OK(nt_status)) {
156 return nt_status;
157 }
158
159 server_info = talloc(mem_ctx, struct auth_serversupplied_info);
160 NT_STATUS_HAVE_NO_MEMORY(server_info);
161
162 server_info->account_sid = dom_sid_parse_talloc(server_info, SID_NT_ANONYMOUS);
163 NT_STATUS_HAVE_NO_MEMORY(server_info->account_sid);
164
165 /* is this correct? */
166 server_info->primary_group_sid = dom_sid_parse_talloc(server_info, SID_BUILTIN_GUESTS);
167 NT_STATUS_HAVE_NO_MEMORY(server_info->primary_group_sid);
168
169 server_info->n_domain_groups = 0;
170 server_info->domain_groups = NULL;
171
172 /* annoying, but the Anonymous really does have a session key,
173 and it is all zeros! */
174 server_info->user_session_key = data_blob(NULL, 0);
175 server_info->lm_session_key = data_blob(NULL, 0);
176
177 server_info->account_name = talloc_strdup(server_info, user_info->client.account_name);
178 NT_STATUS_HAVE_NO_MEMORY(server_info->account_name);
179
180 server_info->domain_name = talloc_strdup(server_info, user_info->client.domain_name);
181 NT_STATUS_HAVE_NO_MEMORY(server_info->domain_name);
182
183 server_info->full_name = NULL;
184
185 server_info->logon_script = talloc_strdup(server_info, "");
186 NT_STATUS_HAVE_NO_MEMORY(server_info->logon_script);
187
188 server_info->profile_path = talloc_strdup(server_info, "");
189 NT_STATUS_HAVE_NO_MEMORY(server_info->profile_path);
190
191 server_info->home_directory = talloc_strdup(server_info, "");
192 NT_STATUS_HAVE_NO_MEMORY(server_info->home_directory);
193
194 server_info->home_drive = talloc_strdup(server_info, "");
195 NT_STATUS_HAVE_NO_MEMORY(server_info->home_drive);
196
197 server_info->last_logon = 0;
198 server_info->last_logoff = 0;
199 server_info->acct_expiry = 0;
200 server_info->last_password_change = 0;
201 server_info->allow_password_change = 0;
202 server_info->force_password_change = 0;
203
204 server_info->logon_count = 0;
205 server_info->bad_password_count = 0;
206
207 server_info->acct_flags = ACB_NORMAL;
208
209 server_info->authenticated = false;
210
211 *_server_info = server_info;
212
213 return nt_status;
214}
215
216static const struct auth_operations server_auth_ops = {
217 .name = "server",
218 .get_challenge = server_get_challenge,
219 .want_check = server_want_check,
220 .check_password = server_check_password
221};
222
223_PUBLIC_ NTSTATUS auth_server_init(void)
224{
225 NTSTATUS ret;
226
227 ret = auth_register(&server_auth_ops);
228 if (!NT_STATUS_IS_OK(ret)) {
229 DEBUG(0,("Failed to register 'server' auth backend!\n"));
230 return ret;
231 }
232
233 return ret;
234}
Note: See TracBrowser for help on using the repository browser.