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
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.
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.
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/>.
23 #include "auth/auth.h"
24 #include "auth/credentials/credentials.h"
25 #include "libcli/security/security.h"
26 #include "libcli/smb_composite/smb_composite.h"
27 #include "param/param.h"
28 #include "libcli/resolve/resolve.h"
30 /* This version of 'security=server' rewirtten from scratch for Samba4
31 * libraries in 2008 */
34 static NTSTATUS server_want_check(struct auth_method_context *ctx,
36 const struct auth_usersupplied_info *user_info)
41 * The challenge from the target server, when operating in security=server
43 static NTSTATUS server_get_challenge(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, DATA_BLOB *_blob)
45 struct smb_composite_connect io;
46 struct smbcli_options smb_options;
47 const char **host_list;
50 /* Make a connection to the target server, found by 'password server' in smb.conf */
52 lp_smbcli_options(ctx->auth_ctx->lp_ctx, &smb_options);
54 /* Make a negprot, WITHOUT SPNEGO, so we get a challenge nice an easy */
55 io.in.options.use_spnego = false;
57 /* Hope we don't get * (the default), as this won't work... */
58 host_list = lp_passwordserver(ctx->auth_ctx->lp_ctx);
60 return NT_STATUS_INTERNAL_ERROR;
62 io.in.dest_host = host_list[0];
63 if (strequal(io.in.dest_host, "*")) {
64 return NT_STATUS_INTERNAL_ERROR;
66 io.in.dest_ports = lp_smb_ports(ctx->auth_ctx->lp_ctx);
67 io.in.socket_options = lp_socket_options(ctx->auth_ctx->lp_ctx);
68 io.in.gensec_settings = lp_gensec_settings(mem_ctx, ctx->auth_ctx->lp_ctx);
70 io.in.called_name = strupper_talloc(mem_ctx, io.in.dest_host);
72 /* We don't want to get as far as the session setup */
73 io.in.credentials = cli_credentials_init_anon(mem_ctx);
74 cli_credentials_set_workstation(io.in.credentials,
75 lp_netbios_name(ctx->auth_ctx->lp_ctx),
80 io.in.workgroup = ""; /* only used with SPNEGO, disabled above */
82 io.in.options = smb_options;
84 io.in.iconv_convenience = lp_iconv_convenience(ctx->auth_ctx->lp_ctx);
85 lp_smbcli_session_options(ctx->auth_ctx->lp_ctx, &io.in.session_options);
87 status = smb_composite_connect(&io, mem_ctx, lp_resolve_context(ctx->auth_ctx->lp_ctx),
88 ctx->auth_ctx->event_ctx);
89 NT_STATUS_NOT_OK_RETURN(status);
91 *_blob = io.out.tree->session->transport->negotiate.secblob;
92 ctx->private_data = talloc_steal(ctx, io.out.tree->session);
97 * Return an error based on username
99 * This function allows the testing of obsure errors, as well as the generation
100 * of NT_STATUS -> DOS error mapping tables.
102 * This module is of no value to end-users.
104 * The password is ignored.
106 * @return An NTSTATUS value based on the username
109 static NTSTATUS server_check_password(struct auth_method_context *ctx,
111 const struct auth_usersupplied_info *user_info,
112 struct auth_serversupplied_info **_server_info)
115 struct auth_serversupplied_info *server_info;
116 struct cli_credentials *creds;
117 struct smb_composite_sesssetup session_setup;
119 struct smbcli_session *session = talloc_get_type(ctx->private_data, struct smbcli_session);
121 creds = cli_credentials_init(mem_ctx);
123 NT_STATUS_HAVE_NO_MEMORY(creds);
125 cli_credentials_set_username(creds, user_info->client.account_name, CRED_SPECIFIED);
126 cli_credentials_set_domain(creds, user_info->client.domain_name, CRED_SPECIFIED);
128 switch (user_info->password_state) {
129 case AUTH_PASSWORD_PLAIN:
130 cli_credentials_set_password(creds, user_info->password.plaintext,
133 case AUTH_PASSWORD_HASH:
134 cli_credentials_set_nt_hash(creds, user_info->password.hash.nt,
138 case AUTH_PASSWORD_RESPONSE:
139 cli_credentials_set_ntlm_response(creds, &user_info->password.response.lanman, &user_info->password.response.nt, CRED_SPECIFIED);
143 session_setup.in.sesskey = session->transport->negotiate.sesskey;
144 session_setup.in.capabilities = session->transport->negotiate.capabilities;
146 session_setup.in.credentials = creds;
147 session_setup.in.workgroup = ""; /* Only used with SPNEGO, which we are not doing */
148 session_setup.in.gensec_settings = lp_gensec_settings(session, ctx->auth_ctx->lp_ctx);
150 /* Check password with remove server - this should be async some day */
151 nt_status = smb_composite_sesssetup(session, &session_setup);
153 if (!NT_STATUS_IS_OK(nt_status)) {
157 server_info = talloc(mem_ctx, struct auth_serversupplied_info);
158 NT_STATUS_HAVE_NO_MEMORY(server_info);
160 server_info->account_sid = dom_sid_parse_talloc(server_info, SID_NT_ANONYMOUS);
161 NT_STATUS_HAVE_NO_MEMORY(server_info->account_sid);
163 /* is this correct? */
164 server_info->primary_group_sid = dom_sid_parse_talloc(server_info, SID_BUILTIN_GUESTS);
165 NT_STATUS_HAVE_NO_MEMORY(server_info->primary_group_sid);
167 server_info->n_domain_groups = 0;
168 server_info->domain_groups = NULL;
170 /* annoying, but the Anonymous really does have a session key,
171 and it is all zeros! */
172 server_info->user_session_key = data_blob(NULL, 0);
173 server_info->lm_session_key = data_blob(NULL, 0);
175 server_info->account_name = talloc_strdup(server_info, user_info->client.account_name);
176 NT_STATUS_HAVE_NO_MEMORY(server_info->account_name);
178 server_info->domain_name = talloc_strdup(server_info, user_info->client.domain_name);
179 NT_STATUS_HAVE_NO_MEMORY(server_info->domain_name);
181 server_info->full_name = NULL;
183 server_info->logon_script = talloc_strdup(server_info, "");
184 NT_STATUS_HAVE_NO_MEMORY(server_info->logon_script);
186 server_info->profile_path = talloc_strdup(server_info, "");
187 NT_STATUS_HAVE_NO_MEMORY(server_info->profile_path);
189 server_info->home_directory = talloc_strdup(server_info, "");
190 NT_STATUS_HAVE_NO_MEMORY(server_info->home_directory);
192 server_info->home_drive = talloc_strdup(server_info, "");
193 NT_STATUS_HAVE_NO_MEMORY(server_info->home_drive);
195 server_info->last_logon = 0;
196 server_info->last_logoff = 0;
197 server_info->acct_expiry = 0;
198 server_info->last_password_change = 0;
199 server_info->allow_password_change = 0;
200 server_info->force_password_change = 0;
202 server_info->logon_count = 0;
203 server_info->bad_password_count = 0;
205 server_info->acct_flags = ACB_NORMAL;
207 server_info->authenticated = false;
209 *_server_info = server_info;
214 static const struct auth_operations server_auth_ops = {
216 .get_challenge = server_get_challenge,
217 .want_check = server_want_check,
218 .check_password = server_check_password
221 _PUBLIC_ NTSTATUS auth_server_init(void)
225 ret = auth_register(&server_auth_ops);
226 if (!NT_STATUS_IS_OK(ret)) {
227 DEBUG(0,("Failed to register 'server' auth backend!\n"));