18478992f3e1714c43cdce3a909a237bbb29e08a
[tprouty/samba.git] / source / nsswitch / winbindd_misc.c
1 /* 
2    Unix SMB/CIFS implementation.
3
4    Winbind daemon - miscellaneous other functions
5
6    Copyright (C) Tim Potter      2000
7    Copyright (C) Andrew Bartlett 2002
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 #include "winbindd.h"
26
27 #undef DBGC_CLASS
28 #define DBGC_CLASS DBGC_WINBIND
29
30 /* Check the machine account password is valid */
31
32 enum winbindd_result winbindd_check_machine_acct(struct winbindd_cli_state *state)
33 {
34         NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
35         uchar trust_passwd[16];
36         int num_retries = 0;
37         struct cli_state *cli;
38         uint32 sec_channel_type;
39         struct winbindd_domain *contact_domain;
40
41         DEBUG(3, ("[%5lu]: check machine account\n", (unsigned long)state->pid));
42
43         /* Get trust account password */
44
45  again:
46         if (!secrets_fetch_trust_account_password(
47                     lp_workgroup(), trust_passwd, NULL, &sec_channel_type)) {
48                 result = NT_STATUS_INTERNAL_ERROR;
49                 goto done;
50         }
51
52
53         contact_domain = find_our_domain();
54         if (!contact_domain) {
55                 result = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
56                 DEBUG(1, ("Cannot find our own domain!\n"));
57                 goto done;
58         }
59         
60         /* This call does a cli_nt_setup_creds() which implicitly checks
61            the trust account password. */
62         /* Don't shut this down - it belongs to the connection cache code */
63         
64         result = cm_get_netlogon_cli(contact_domain,
65                 trust_passwd, sec_channel_type, True, &cli);
66
67         if (!NT_STATUS_IS_OK(result)) {
68                 DEBUG(3, ("could not open handle to NETLOGON pipe\n"));
69                 goto done;
70         }
71
72         /* There is a race condition between fetching the trust account
73            password and the periodic machine password change.  So it's 
74            possible that the trust account password has been changed on us.  
75            We are returned NT_STATUS_ACCESS_DENIED if this happens. */
76
77 #define MAX_RETRIES 8
78
79         if ((num_retries < MAX_RETRIES) && 
80             NT_STATUS_V(result) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED)) {
81                 num_retries++;
82                 goto again;
83         }
84
85         /* Pass back result code - zero for success, other values for
86            specific failures. */
87
88         DEBUG(3, ("secret is %s\n", NT_STATUS_IS_OK(result) ?  
89                   "good" : "bad"));
90
91  done:
92         state->response.data.auth.nt_status = NT_STATUS_V(result);
93         fstrcpy(state->response.data.auth.nt_status_string, nt_errstr(result));
94         fstrcpy(state->response.data.auth.error_string, nt_errstr(result));
95         state->response.data.auth.pam_error = nt_status_to_pam(result);
96
97         DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2, ("Checking the trust account password returned %s\n", 
98                                                 state->response.data.auth.nt_status_string));
99
100         return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
101 }
102
103 enum winbindd_result winbindd_list_trusted_domains(struct winbindd_cli_state
104                                                    *state)
105 {
106         struct winbindd_domain *domain;
107         int total_entries = 0, extra_data_len = 0;
108         char *ted, *extra_data = NULL;
109
110         DEBUG(3, ("[%5lu]: list trusted domains\n", (unsigned long)state->pid));
111
112         /* We need to refresh the trusted domain list as the domains may
113            have changed since we last looked.  There may be a sequence
114            number or something we should use but I haven't found it yet. */
115
116         if (!init_domain_list()) {
117                 DEBUG(1, ("winbindd_list_trusted_domains: could not "
118                           "refresh trusted domain list\n"));
119                 return WINBINDD_ERROR;
120         }
121
122         for(domain = domain_list(); domain; domain = domain->next) {
123
124                 /* Skip own domain */
125
126                 if (domain->primary) continue;
127
128                 /* Add domain to list */
129
130                 total_entries++;
131                 ted = Realloc(extra_data, sizeof(fstring) * 
132                               total_entries);
133
134                 if (!ted) {
135                         DEBUG(0,("winbindd_list_trusted_domains: failed to enlarge buffer!\n"));
136                         SAFE_FREE(extra_data);
137                         return WINBINDD_ERROR;
138                 } else 
139                         extra_data = ted;
140
141                 memcpy(&extra_data[extra_data_len], domain->name,
142                        strlen(domain->name));
143
144                 extra_data_len  += strlen(domain->name);
145                 extra_data[extra_data_len++] = ',';
146         }
147
148         if (extra_data) {
149                 if (extra_data_len > 1) 
150                         extra_data[extra_data_len - 1] = '\0';
151                 state->response.extra_data = extra_data;
152                 state->response.length += extra_data_len;
153         }
154
155         return WINBINDD_OK;
156 }
157
158
159 enum winbindd_result winbindd_show_sequence(struct winbindd_cli_state *state)
160 {
161         struct winbindd_domain *domain;
162         char *extra_data = NULL;
163         const char *which_domain;
164
165         DEBUG(3, ("[%5lu]: show sequence\n", (unsigned long)state->pid));
166
167         /* Ensure null termination */
168         state->request.domain_name[sizeof(state->request.domain_name)-1]='\0';  
169         which_domain = state->request.domain_name;
170
171         extra_data = strdup("");
172
173         /* this makes for a very simple data format, and is easily parsable as well
174            if that is ever needed */
175         for (domain = domain_list(); domain; domain = domain->next) {
176                 char *s;
177
178                 /* if we have a domain name restricting the request and this
179                    one in the list doesn't match, then just bypass the remainder
180                    of the loop */
181
182                 if ( *which_domain && !strequal(which_domain, domain->name) )
183                         continue;
184
185                 domain->methods->sequence_number(domain, &domain->sequence_number);
186                 
187                 if (DOM_SEQUENCE_NONE == (unsigned)domain->sequence_number) {
188                         asprintf(&s,"%s%s : DISCONNECTED\n", extra_data, 
189                                  domain->name);
190                 } else {
191                         asprintf(&s,"%s%s : %u\n", extra_data, 
192                                  domain->name, (unsigned)domain->sequence_number);
193                 }
194                 free(extra_data);
195                 extra_data = s;
196         }
197
198         state->response.extra_data = extra_data;
199         /* must add one to length to copy the 0 for string termination */
200         state->response.length += strlen(extra_data) + 1;
201
202         return WINBINDD_OK;
203 }
204
205 enum winbindd_result winbindd_domain_info(struct winbindd_cli_state *state)
206 {
207         struct winbindd_domain *domain;
208
209         DEBUG(3, ("[%5lu]: domain_info [%s]\n", (unsigned long)state->pid,
210                   state->request.domain_name));
211
212         domain = find_domain_from_name(state->request.domain_name);
213
214         if (domain == NULL) {
215                 DEBUG(3, ("Did not find domain [%s]\n",
216                           state->request.domain_name));
217                 return WINBINDD_ERROR;
218         }
219
220         fstrcpy(state->response.data.domain_info.name, domain->name);
221         fstrcpy(state->response.data.domain_info.alt_name, domain->alt_name);
222         fstrcpy(state->response.data.domain_info.sid,
223                 sid_string_static(&domain->sid));
224         
225         state->response.data.domain_info.native_mode = domain->native_mode;
226         state->response.data.domain_info.active_directory = domain->active_directory;
227         state->response.data.domain_info.primary = domain->primary;
228
229         state->response.data.domain_info.sequence_number =
230                 domain->sequence_number;
231
232         return WINBINDD_OK;
233 }
234
235 enum winbindd_result winbindd_ping(struct winbindd_cli_state
236                                                    *state)
237 {
238         DEBUG(3, ("[%5lu]: ping\n", (unsigned long)state->pid));
239
240         return WINBINDD_OK;
241 }
242
243 /* List various tidbits of information */
244
245 enum winbindd_result winbindd_info(struct winbindd_cli_state *state)
246 {
247
248         DEBUG(3, ("[%5lu]: request misc info\n", (unsigned long)state->pid));
249
250         state->response.data.info.winbind_separator = *lp_winbind_separator();
251         fstrcpy(state->response.data.info.samba_version, SAMBA_VERSION_STRING);
252
253         return WINBINDD_OK;
254 }
255
256 /* Tell the client the current interface version */
257
258 enum winbindd_result winbindd_interface_version(struct winbindd_cli_state *state)
259 {
260
261         DEBUG(3, ("[%5lu]: request interface version\n", (unsigned long)state->pid));
262         
263         state->response.data.interface_version = WINBIND_INTERFACE_VERSION;
264
265         return WINBINDD_OK;
266 }
267
268 /* What domain are we a member of? */
269
270 enum winbindd_result winbindd_domain_name(struct winbindd_cli_state *state)
271 {
272
273         DEBUG(3, ("[%5lu]: request domain name\n", (unsigned long)state->pid));
274         
275         fstrcpy(state->response.data.domain_name, lp_workgroup());
276
277         return WINBINDD_OK;
278 }
279
280 /* What's my name again? */
281
282 enum winbindd_result winbindd_netbios_name(struct winbindd_cli_state *state)
283 {
284
285         DEBUG(3, ("[%5lu]: request netbios name\n", (unsigned long)state->pid));
286         
287         fstrcpy(state->response.data.netbios_name, global_myname());
288
289         return WINBINDD_OK;
290 }
291
292 /* Where can I find the privilaged pipe? */
293
294 enum winbindd_result winbindd_priv_pipe_dir(struct winbindd_cli_state *state)
295 {
296
297         DEBUG(3, ("[%5lu]: request location of privileged pipe\n", (unsigned long)state->pid));
298         
299         state->response.extra_data = strdup(get_winbind_priv_pipe_dir());
300         if (!state->response.extra_data)
301                 return WINBINDD_ERROR;
302
303         /* must add one to length to copy the 0 for string termination */
304         state->response.length += strlen((char *)state->response.extra_data) + 1;
305
306         return WINBINDD_OK;
307 }