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 = memdup(prs_data_p(&ps), size);
46 if (!state->response.extra_data) {
48 return NT_STATUS_NO_MEMORY;
50 state->response.length += size;
55 /* Return a password structure from a username. */
57 enum winbindd_result winbindd_pam_auth(struct winbindd_cli_state *state)
60 fstring name_domain, name_user;
61 unsigned char trust_passwd[16];
62 time_t last_change_time;
64 NET_USER_INFO_3 info3;
65 struct cli_state *cli = NULL;
67 TALLOC_CTX *mem_ctx = NULL;
71 /* Ensure null termination */
72 state->request.data.auth.user[sizeof(state->request.data.auth.user)-1]='\0';
74 /* Ensure null termination */
75 state->request.data.auth.pass[sizeof(state->request.data.auth.pass)-1]='\0';
77 DEBUG(3, ("[%5d]: pam auth %s\n", state->pid,
78 state->request.data.auth.user));
80 if (!(mem_ctx = talloc_init_named("winbind pam auth for %s", state->request.data.auth.user))) {
81 DEBUG(0, ("winbindd_pam_auth: could not talloc_init()!\n"));
82 result = NT_STATUS_NO_MEMORY;
86 /* Parse domain and username */
88 if (!parse_domain_user(state->request.data.auth.user, name_domain,
90 DEBUG(5,("no domain separator (%s) in username (%s) - failing auth\n", lp_winbind_separator(), state->request.data.auth.user));
91 result = NT_STATUS_INVALID_PARAMETER;
96 unsigned char local_lm_response[24];
97 unsigned char local_nt_response[24];
99 generate_random_buffer(chal, 8, False);
100 SMBencrypt(state->request.data.auth.pass, chal, local_lm_response);
102 SMBNTencrypt(state->request.data.auth.pass, chal, local_nt_response);
104 lm_resp = data_blob_talloc(mem_ctx, local_lm_response, sizeof(local_lm_response));
105 nt_resp = data_blob_talloc(mem_ctx, local_nt_response, sizeof(local_nt_response));
109 * Get the machine account password for our primary domain
112 if (!secrets_fetch_trust_account_password(
113 lp_workgroup(), trust_passwd, &last_change_time)) {
114 DEBUG(0, ("winbindd_pam_auth: could not fetch trust account "
115 "password for domain %s\n", lp_workgroup()));
116 result = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
120 /* We really don't care what LUID we give the user. */
122 generate_random_buffer( (unsigned char *)&smb_uid_low, 4, False);
126 /* Don't shut this down - it belongs to the connection cache code */
127 result = cm_get_netlogon_cli(lp_workgroup(), trust_passwd, &cli);
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 state->response.data.auth.nt_status = NT_STATUS_V(result);
144 fstrcpy(state->response.data.auth.nt_status_string, nt_errstr(result));
145 fstrcpy(state->response.data.auth.error_string, nt_errstr(result));
146 state->response.data.auth.pam_error = nt_status_to_pam(result);
148 DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2, ("Plain-text authentication for user %s returned %s (PAM: %d)\n",
149 state->request.data.auth.user,
150 state->response.data.auth.nt_status_string,
151 state->response.data.auth.pam_error));
154 talloc_destroy(mem_ctx);
156 return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
159 /* Challenge Response Authentication Protocol */
161 enum winbindd_result winbindd_pam_auth_crap(struct winbindd_cli_state *state)
164 unsigned char trust_passwd[16];
165 time_t last_change_time;
166 NET_USER_INFO_3 info3;
167 struct cli_state *cli = NULL;
168 TALLOC_CTX *mem_ctx = NULL;
170 const char *domain = NULL;
171 const char *contact_domain;
172 const char *workstation;
174 DATA_BLOB lm_resp, nt_resp;
176 /* Ensure null termination */
177 state->request.data.auth_crap.user[sizeof(state->request.data.auth_crap.user)-1]='\0';
179 /* Ensure null termination */
180 state->request.data.auth_crap.domain[sizeof(state->request.data.auth_crap.domain)-1]='\0';
182 if (!(mem_ctx = talloc_init_named("winbind pam auth crap for (utf8) %s", state->request.data.auth_crap.user))) {
183 DEBUG(0, ("winbindd_pam_auth_crap: could not talloc_init()!\n"));
184 result = NT_STATUS_NO_MEMORY;
188 if (pull_utf8_talloc(mem_ctx, &user, state->request.data.auth_crap.user) < 0) {
189 DEBUG(0, ("winbindd_pam_auth_crap: pull_utf8_talloc failed!\n"));
192 if (*state->request.data.auth_crap.domain) {
194 if (pull_utf8_talloc(mem_ctx, &dom, state->request.data.auth_crap.domain) < 0) {
195 DEBUG(0, ("winbindd_pam_auth_crap: pull_utf8_talloc failed!\n"));
198 } else if (lp_winbind_use_default_domain()) {
199 domain = lp_workgroup();
201 DEBUG(5,("no domain specified with username (%s) - failing auth\n",
203 result = NT_STATUS_INVALID_PARAMETER;
207 DEBUG(3, ("[%5d]: pam auth crap domain: %s user: %s\n", state->pid,
210 if (lp_allow_trusted_domains() && (state->request.data.auth_crap.flags & WINBIND_PAM_CONTACT_TRUSTDOM)) {
211 contact_domain = domain;
213 contact_domain = lp_workgroup();
216 if (*state->request.data.auth_crap.workstation) {
218 if (pull_utf8_talloc(mem_ctx, &wrk, state->request.data.auth_crap.workstation) < 0) {
219 DEBUG(0, ("winbindd_pam_auth_crap: pull_utf8_talloc failed!\n"));
223 workstation = global_myname();
226 if (state->request.data.auth_crap.lm_resp_len > sizeof(state->request.data.auth_crap.lm_resp)
227 || state->request.data.auth_crap.nt_resp_len > sizeof(state->request.data.auth_crap.nt_resp)) {
228 DEBUG(0, ("winbindd_pam_auth_crap: invalid password length %u/%u\n",
229 state->request.data.auth_crap.lm_resp_len,
230 state->request.data.auth_crap.nt_resp_len));
231 result = NT_STATUS_INVALID_PARAMETER;
235 lm_resp = data_blob_talloc(mem_ctx, state->request.data.auth_crap.lm_resp, state->request.data.auth_crap.lm_resp_len);
236 nt_resp = data_blob_talloc(mem_ctx, state->request.data.auth_crap.nt_resp, state->request.data.auth_crap.nt_resp_len);
239 * Get the machine account password for the domain to contact.
240 * This is either our own domain for a workstation, or possibly
241 * any domain for a PDC with trusted domains.
244 if (!secrets_fetch_trust_account_password (
245 contact_domain, trust_passwd, &last_change_time)) {
246 DEBUG(0, ("winbindd_pam_auth: could not fetch trust account "
247 "password for domain %s\n", contact_domain));
248 result = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
254 /* Don't shut this down - it belongs to the connection cache code */
255 result = cm_get_netlogon_cli(contact_domain, trust_passwd, &cli);
257 if (!NT_STATUS_IS_OK(result)) {
258 DEBUG(3, ("could not open handle to NETLOGON pipe (error: %s)\n", nt_errstr(result)));
262 result = cli_netlogon_sam_network_logon(cli, mem_ctx,
264 workstation, state->request.data.auth_crap.chal,
268 if (NT_STATUS_IS_OK(result)) {
269 uni_group_cache_store_netlogon(mem_ctx, &info3);
270 if (state->request.data.auth_crap.flags & WINBIND_PAM_INFO3_NDR) {
271 result = append_info3_as_ndr(mem_ctx, state, &info3);
275 /* we don't currently do this stuff right */
276 if (state->request.data.auth_crap.flags & WINBIND_PAM_NTKEY) {
277 SMB_ASSERT(sizeof(state->response.data.auth.nt_session_key) == sizeof(info3.user_sess_key));
278 memcpy(state->response.data.auth.nt_session_key, info3.user_sess_key, sizeof(state->response.data.auth.nt_session_key) /* 16 */);
280 if (state->request.data.auth_crap.flags & WINBIND_PAM_LMKEY) {
281 SMB_ASSERT(sizeof(state->response.data.auth.nt_session_key) <= sizeof(info3.user_sess_key));
282 memcpy(state->response.data.auth.first_8_lm_hash, info3.padding, sizeof(state->response.data.auth.nt_session_key) /* 16 */);
289 state->response.data.auth.nt_status = NT_STATUS_V(result);
290 push_utf8_fstring(state->response.data.auth.nt_status_string, nt_errstr(result));
291 push_utf8_fstring(state->response.data.auth.error_string, nt_errstr(result));
292 state->response.data.auth.pam_error = nt_status_to_pam(result);
294 DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2,
295 ("NTLM CRAP authentication for user [%s]\\[%s] returned %s (PAM: %d)\n",
298 state->response.data.auth.nt_status_string,
299 state->response.data.auth.pam_error));
302 talloc_destroy(mem_ctx);
304 return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
307 /* Change a user password */
309 enum winbindd_result winbindd_pam_chauthtok(struct winbindd_cli_state *state)
312 char *oldpass, *newpass;
313 fstring domain, user;
316 DEBUG(3, ("[%5d]: pam chauthtok %s\n", state->pid,
317 state->request.data.chauthtok.user));
322 return WINBINDD_ERROR;
324 if (!parse_domain_user(state->request.data.chauthtok.user, domain,
326 result = NT_STATUS_INVALID_PARAMETER;
330 /* Change password */
332 oldpass = state->request.data.chauthtok.oldpass;
333 newpass = state->request.data.chauthtok.newpass;
337 if (!(hnd = cm_get_sam_handle(domain))) {
338 DEBUG(1, ("could not get SAM handle on DC for %s\n", domain));
339 result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
343 if (!cli_oem_change_password(hnd->cli, user, newpass, oldpass)) {
344 DEBUG(1, ("password change failed for user %s/%s\n", domain,
346 result = NT_STATUS_WRONG_PASSWORD;
348 result = NT_STATUS_OK;
352 state->response.data.auth.nt_status = NT_STATUS_V(result);
353 fstrcpy(state->response.data.auth.nt_status_string, nt_errstr(result));
354 fstrcpy(state->response.data.auth.error_string, nt_errstr(result));
355 state->response.data.auth.pam_error = nt_status_to_pam(result);
357 DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2,
358 ("Password change for user [%s]\\[%s] returned %s (PAM: %d)\n",
361 state->response.data.auth.nt_status_string,
362 state->response.data.auth.pam_error));
364 return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;