2 Unix SMB/CIFS implementation.
4 Winbind daemon - pam auth funcions
6 Copyright (C) Andrew Tridgell 2000
7 Copyright (C) Tim Potter 2001
8 Copyright (C) Andrew Bartlett 2001-2002
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 #define DBGC_CLASS DBGC_WINBIND
30 static NTSTATUS append_info3_as_ndr(TALLOC_CTX *mem_ctx,
31 struct winbindd_cli_state *state,
32 NET_USER_INFO_3 *info3)
36 if (!prs_init(&ps, 256 /* Random, non-zero number */, mem_ctx, MARSHALL)) {
37 return NT_STATUS_NO_MEMORY;
39 if (!net_io_user_info3("", info3, &ps, 1, 3)) {
41 return NT_STATUS_UNSUCCESSFUL;
44 size = prs_data_size(&ps);
45 state->response.extra_data = malloc(size);
46 if (!state->response.extra_data) {
48 return NT_STATUS_NO_MEMORY;
50 prs_copy_all_data_out(state->response.extra_data, &ps);
51 state->response.length += size;
56 /* Return a password structure from a username. */
58 enum winbindd_result winbindd_pam_auth(struct winbindd_cli_state *state)
61 fstring name_domain, name_user;
62 unsigned char trust_passwd[16];
63 time_t last_change_time;
64 uint32 sec_channel_type;
65 NET_USER_INFO_3 info3;
66 struct cli_state *cli = NULL;
68 TALLOC_CTX *mem_ctx = NULL;
72 /* Ensure null termination */
73 state->request.data.auth.user[sizeof(state->request.data.auth.user)-1]='\0';
75 /* Ensure null termination */
76 state->request.data.auth.pass[sizeof(state->request.data.auth.pass)-1]='\0';
78 DEBUG(3, ("[%5d]: pam auth %s\n", state->pid,
79 state->request.data.auth.user));
81 if (!(mem_ctx = talloc_init("winbind pam auth for %s", state->request.data.auth.user))) {
82 DEBUG(0, ("winbindd_pam_auth: could not talloc_init()!\n"));
83 result = NT_STATUS_NO_MEMORY;
87 /* Parse domain and username */
89 if (!parse_domain_user(state->request.data.auth.user, name_domain,
91 DEBUG(5,("no domain separator (%s) in username (%s) - failing auth\n", lp_winbind_separator(), state->request.data.auth.user));
92 result = NT_STATUS_INVALID_PARAMETER;
97 unsigned char local_lm_response[24];
98 unsigned char local_nt_response[24];
100 generate_random_buffer(chal, 8, False);
101 SMBencrypt(state->request.data.auth.pass, chal, local_lm_response);
103 SMBNTencrypt(state->request.data.auth.pass, chal, local_nt_response);
105 lm_resp = data_blob_talloc(mem_ctx, local_lm_response, sizeof(local_lm_response));
106 nt_resp = data_blob_talloc(mem_ctx, local_nt_response, sizeof(local_nt_response));
110 * Get the machine account password for our primary domain
113 if (!secrets_fetch_trust_account_password(
114 lp_workgroup(), trust_passwd, &last_change_time,
115 &sec_channel_type)) {
116 DEBUG(0, ("winbindd_pam_auth: could not fetch trust account "
117 "password for domain %s\n", lp_workgroup()));
118 result = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
124 /* Don't shut this down - it belongs to the connection cache code */
125 result = cm_get_netlogon_cli(lp_workgroup(), trust_passwd,
129 if (!NT_STATUS_IS_OK(result)) {
130 DEBUG(3, ("could not open handle to NETLOGON pipe\n"));
134 result = cli_netlogon_sam_network_logon(cli, mem_ctx,
135 name_user, name_domain,
136 global_myname(), chal,
140 uni_group_cache_store_netlogon(mem_ctx, &info3);
143 /* give us a more useful (more correct?) error code */
144 if ((NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND) || (NT_STATUS_EQUAL(result, NT_STATUS_UNSUCCESSFUL)))) {
145 result = NT_STATUS_NO_LOGON_SERVERS;
148 state->response.data.auth.nt_status = NT_STATUS_V(result);
149 fstrcpy(state->response.data.auth.nt_status_string, nt_errstr(result));
150 fstrcpy(state->response.data.auth.error_string, get_friendly_nt_error_msg(result));
151 state->response.data.auth.pam_error = nt_status_to_pam(result);
153 DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2, ("Plain-text authentication for user %s returned %s (PAM: %d)\n",
154 state->request.data.auth.user,
155 state->response.data.auth.nt_status_string,
156 state->response.data.auth.pam_error));
159 talloc_destroy(mem_ctx);
161 return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
164 /* Challenge Response Authentication Protocol */
166 enum winbindd_result winbindd_pam_auth_crap(struct winbindd_cli_state *state)
169 unsigned char trust_passwd[16];
170 time_t last_change_time;
171 uint32 sec_channel_type;
172 NET_USER_INFO_3 info3;
173 struct cli_state *cli = NULL;
174 TALLOC_CTX *mem_ctx = NULL;
176 const char *domain = NULL;
177 const char *contact_domain;
178 const char *workstation;
180 DATA_BLOB lm_resp, nt_resp;
182 if (!state->privileged) {
183 DEBUG(2, ("winbindd_pam_auth_crap: non-privileged access denied!\n"));
184 /* send a better message than ACCESS_DENIED */
185 push_utf8_fstring(state->response.data.auth.error_string, "winbind client not authorized to use winbindd_pam_auth_crap");
186 result = NT_STATUS_ACCESS_DENIED;
190 /* Ensure null termination */
191 state->request.data.auth_crap.user[sizeof(state->request.data.auth_crap.user)-1]='\0';
193 /* Ensure null termination */
194 state->request.data.auth_crap.domain[sizeof(state->request.data.auth_crap.domain)-1]='\0';
196 if (!(mem_ctx = talloc_init("winbind pam auth crap for (utf8) %s", state->request.data.auth_crap.user))) {
197 DEBUG(0, ("winbindd_pam_auth_crap: could not talloc_init()!\n"));
198 result = NT_STATUS_NO_MEMORY;
202 if (pull_utf8_talloc(mem_ctx, &user, state->request.data.auth_crap.user) == (size_t)-1) {
203 DEBUG(0, ("winbindd_pam_auth_crap: pull_utf8_talloc failed!\n"));
206 if (*state->request.data.auth_crap.domain) {
208 if (pull_utf8_talloc(mem_ctx, &dom, state->request.data.auth_crap.domain) == (size_t)-1) {
209 DEBUG(0, ("winbindd_pam_auth_crap: pull_utf8_talloc failed!\n"));
212 } else if (lp_winbind_use_default_domain()) {
213 domain = lp_workgroup();
215 DEBUG(5,("no domain specified with username (%s) - failing auth\n",
217 result = NT_STATUS_INVALID_PARAMETER;
221 DEBUG(3, ("[%5d]: pam auth crap domain: %s user: %s\n", state->pid,
224 if (lp_allow_trusted_domains() && (state->request.data.auth_crap.flags & WINBIND_PAM_CONTACT_TRUSTDOM)) {
225 contact_domain = domain;
227 contact_domain = lp_workgroup();
230 if (*state->request.data.auth_crap.workstation) {
232 if (pull_utf8_talloc(mem_ctx, &wrk, state->request.data.auth_crap.workstation) == (size_t)-1) {
233 DEBUG(0, ("winbindd_pam_auth_crap: pull_utf8_talloc failed!\n"));
237 workstation = global_myname();
240 if (state->request.data.auth_crap.lm_resp_len > sizeof(state->request.data.auth_crap.lm_resp)
241 || state->request.data.auth_crap.nt_resp_len > sizeof(state->request.data.auth_crap.nt_resp)) {
242 DEBUG(0, ("winbindd_pam_auth_crap: invalid password length %u/%u\n",
243 state->request.data.auth_crap.lm_resp_len,
244 state->request.data.auth_crap.nt_resp_len));
245 result = NT_STATUS_INVALID_PARAMETER;
249 lm_resp = data_blob_talloc(mem_ctx, state->request.data.auth_crap.lm_resp, state->request.data.auth_crap.lm_resp_len);
250 nt_resp = data_blob_talloc(mem_ctx, state->request.data.auth_crap.nt_resp, state->request.data.auth_crap.nt_resp_len);
253 * Get the machine account password for the domain to contact.
254 * This is either our own domain for a workstation, or possibly
255 * any domain for a PDC with trusted domains.
258 if (!secrets_fetch_trust_account_password (
259 contact_domain, trust_passwd, &last_change_time,
260 &sec_channel_type)) {
261 DEBUG(0, ("winbindd_pam_auth: could not fetch trust account "
262 "password for domain %s\n", contact_domain));
263 result = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
269 /* Don't shut this down - it belongs to the connection cache code */
270 result = cm_get_netlogon_cli(contact_domain, trust_passwd, sec_channel_type, &cli);
272 if (!NT_STATUS_IS_OK(result)) {
273 DEBUG(3, ("could not open handle to NETLOGON pipe (error: %s)\n", nt_errstr(result)));
277 result = cli_netlogon_sam_network_logon(cli, mem_ctx,
279 workstation, state->request.data.auth_crap.chal,
283 if (NT_STATUS_IS_OK(result)) {
284 uni_group_cache_store_netlogon(mem_ctx, &info3);
285 if (state->request.data.auth_crap.flags & WINBIND_PAM_INFO3_NDR) {
286 result = append_info3_as_ndr(mem_ctx, state, &info3);
289 if (state->request.data.auth_crap.flags & WINBIND_PAM_NTKEY) {
290 memcpy(state->response.data.auth.nt_session_key, info3.user_sess_key, sizeof(state->response.data.auth.nt_session_key) /* 16 */);
292 if (state->request.data.auth_crap.flags & WINBIND_PAM_LMKEY) {
293 memcpy(state->response.data.auth.first_8_lm_hash, info3.padding, sizeof(state->response.data.auth.first_8_lm_hash) /* 8 */);
299 /* give us a more useful (more correct?) error code */
300 if ((NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND) || (NT_STATUS_EQUAL(result, NT_STATUS_UNSUCCESSFUL)))) {
301 result = NT_STATUS_NO_LOGON_SERVERS;
304 state->response.data.auth.nt_status = NT_STATUS_V(result);
305 push_utf8_fstring(state->response.data.auth.nt_status_string, nt_errstr(result));
306 if (!*state->response.data.auth.error_string)
307 push_utf8_fstring(state->response.data.auth.error_string, get_friendly_nt_error_msg(result));
308 state->response.data.auth.pam_error = nt_status_to_pam(result);
310 DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2,
311 ("NTLM CRAP authentication for user [%s]\\[%s] returned %s (PAM: %d)\n",
314 state->response.data.auth.nt_status_string,
315 state->response.data.auth.pam_error));
318 talloc_destroy(mem_ctx);
320 return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
323 /* Change a user password */
325 enum winbindd_result winbindd_pam_chauthtok(struct winbindd_cli_state *state)
328 char *oldpass, *newpass;
329 fstring domain, user;
332 DEBUG(3, ("[%5d]: pam chauthtok %s\n", state->pid,
333 state->request.data.chauthtok.user));
338 return WINBINDD_ERROR;
340 if (!parse_domain_user(state->request.data.chauthtok.user, domain,
342 result = NT_STATUS_INVALID_PARAMETER;
346 /* Change password */
348 oldpass = state->request.data.chauthtok.oldpass;
349 newpass = state->request.data.chauthtok.newpass;
353 if (!(hnd = cm_get_sam_handle(domain))) {
354 DEBUG(1, ("could not get SAM handle on DC for %s\n", domain));
355 result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
359 if (!cli_oem_change_password(hnd->cli, user, newpass, oldpass)) {
360 DEBUG(1, ("password change failed for user %s/%s\n", domain,
362 result = NT_STATUS_WRONG_PASSWORD;
364 result = NT_STATUS_OK;
368 state->response.data.auth.nt_status = NT_STATUS_V(result);
369 fstrcpy(state->response.data.auth.nt_status_string, nt_errstr(result));
370 fstrcpy(state->response.data.auth.error_string, nt_errstr(result));
371 state->response.data.auth.pam_error = nt_status_to_pam(result);
373 DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2,
374 ("Password change for user [%s]\\[%s] returned %s (PAM: %d)\n",
377 state->response.data.auth.nt_status_string,
378 state->response.data.auth.pam_error));
380 return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;