source: trunk-3.0/source/nsswitch/winbindd_sid.c@ 103

Last change on this file since 103 was 30, checked in by Paul Smedley, 19 years ago

Code updated to Samba 3.0.25rc2 level
File size: 14.7 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3
4 Winbind daemon - sid related functions
5
6 Copyright (C) Tim Potter 2000
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 2 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, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21*/
22
23#include "includes.h"
24#include "winbindd.h"
25
26#undef DBGC_CLASS
27#define DBGC_CLASS DBGC_WINBIND
28
29/* Convert a string */
30
31static void lookupsid_recv(void *private_data, BOOL success,
32 const char *dom_name, const char *name,
33 enum lsa_SidType type);
34
35void winbindd_lookupsid(struct winbindd_cli_state *state)
36{
37 DOM_SID sid;
38
39 /* Ensure null termination */
40 state->request.data.sid[sizeof(state->request.data.sid)-1]='\0';
41
42 DEBUG(3, ("[%5lu]: lookupsid %s\n", (unsigned long)state->pid,
43 state->request.data.sid));
44
45 if (!string_to_sid(&sid, state->request.data.sid)) {
46 DEBUG(5, ("%s not a SID\n", state->request.data.sid));
47 request_error(state);
48 return;
49 }
50
51 winbindd_lookupsid_async(state->mem_ctx, &sid, lookupsid_recv, state);
52}
53
54static void lookupsid_recv(void *private_data, BOOL success,
55 const char *dom_name, const char *name,
56 enum lsa_SidType type)
57{
58 struct winbindd_cli_state *state =
59 talloc_get_type_abort(private_data, struct winbindd_cli_state);
60
61 if (!success) {
62 DEBUG(5, ("lookupsid returned an error\n"));
63 request_error(state);
64 return;
65 }
66
67 fstrcpy(state->response.data.name.dom_name, dom_name);
68 fstrcpy(state->response.data.name.name, name);
69 state->response.data.name.type = type;
70 request_ok(state);
71}
72
73/**
74 * Look up the SID for a qualified name.
75 **/
76
77static void lookupname_recv(void *private_data, BOOL success,
78 const DOM_SID *sid, enum lsa_SidType type);
79
80void winbindd_lookupname(struct winbindd_cli_state *state)
81{
82 char *name_domain, *name_user;
83 char *p;
84
85 /* Ensure null termination */
86 state->request.data.name.dom_name[sizeof(state->request.data.name.dom_name)-1]='\0';
87
88 /* Ensure null termination */
89 state->request.data.name.name[sizeof(state->request.data.name.name)-1]='\0';
90
91 /* cope with the name being a fully qualified name */
92 p = strstr(state->request.data.name.name, lp_winbind_separator());
93 if (p) {
94 *p = 0;
95 name_domain = state->request.data.name.name;
96 name_user = p+1;
97 } else {
98 name_domain = state->request.data.name.dom_name;
99 name_user = state->request.data.name.name;
100 }
101
102 DEBUG(3, ("[%5lu]: lookupname %s%s%s\n", (unsigned long)state->pid,
103 name_domain, lp_winbind_separator(), name_user));
104
105 winbindd_lookupname_async(state->mem_ctx, name_domain, name_user,
106 lookupname_recv, state);
107}
108
109static void lookupname_recv(void *private_data, BOOL success,
110 const DOM_SID *sid, enum lsa_SidType type)
111{
112 struct winbindd_cli_state *state =
113 talloc_get_type_abort(private_data, struct winbindd_cli_state);
114
115 if (!success) {
116 DEBUG(5, ("lookupname returned an error\n"));
117 request_error(state);
118 return;
119 }
120
121 sid_to_string(state->response.data.sid.sid, sid);
122 state->response.data.sid.type = type;
123 request_ok(state);
124 return;
125}
126
127void winbindd_lookuprids(struct winbindd_cli_state *state)
128{
129 struct winbindd_domain *domain;
130 DOM_SID domain_sid;
131
132 /* Ensure null termination */
133 state->request.data.sid[sizeof(state->request.data.sid)-1]='\0';
134
135 DEBUG(10, ("lookup_rids: %s\n", state->request.data.sid));
136
137 if (!string_to_sid(&domain_sid, state->request.data.sid)) {
138 DEBUG(5, ("Could not convert %s to SID\n",
139 state->request.data.sid));
140 request_error(state);
141 return;
142 }
143
144 domain = find_lookup_domain_from_sid(&domain_sid);
145 if (domain == NULL) {
146 DEBUG(10, ("Could not find domain for name %s\n",
147 state->request.domain_name));
148 request_error(state);
149 return;
150 }
151
152 sendto_domain(state, domain);
153}
154
155static struct winbindd_child static_idmap_child;
156
157void init_idmap_child(void)
158{
159 setup_domain_child(NULL, &static_idmap_child, "idmap");
160}
161
162struct winbindd_child *idmap_child(void)
163{
164 return &static_idmap_child;
165}
166
167/* Convert a sid to a uid. We assume we only have one rid attached to the
168 sid. */
169
170static void sid2uid_recv(void *private_data, BOOL success, uid_t uid)
171{
172 struct winbindd_cli_state *state =
173 talloc_get_type_abort(private_data, struct winbindd_cli_state);
174
175 if (!success) {
176 DEBUG(5, ("Could not convert sid %s\n",
177 state->request.data.sid));
178 request_error(state);
179 return;
180 }
181
182 state->response.data.uid = uid;
183 request_ok(state);
184}
185
186static void sid2uid_lookupsid_recv( void *private_data, BOOL success,
187 const char *domain_name,
188 const char *name,
189 enum lsa_SidType type)
190{
191 struct winbindd_cli_state *state =
192 talloc_get_type_abort(private_data, struct winbindd_cli_state);
193 DOM_SID sid;
194
195 if (!success) {
196 DEBUG(5, ("sid2uid_lookupsid_recv Could not convert get sid type for %s\n",
197 state->request.data.sid));
198 request_error(state);
199 return;
200 }
201
202 if ( (type!=SID_NAME_USER) && (type!=SID_NAME_COMPUTER) ) {
203 DEBUG(5,("sid2uid_lookupsid_recv: Sid %s is not a user or a computer.\n",
204 state->request.data.sid));
205 request_error(state);
206 return;
207 }
208
209 if (!string_to_sid(&sid, state->request.data.sid)) {
210 DEBUG(1, ("sid2uid_lookupsid_recv: Could not get convert sid %s from string\n",
211 state->request.data.sid));
212 request_error(state);
213 return;
214 }
215
216 /* always use the async interface (may block) */
217 winbindd_sid2uid_async(state->mem_ctx, &sid, sid2uid_recv, state);
218}
219
220void winbindd_sid_to_uid(struct winbindd_cli_state *state)
221{
222 DOM_SID sid;
223
224 /* Ensure null termination */
225 state->request.data.sid[sizeof(state->request.data.sid)-1]='\0';
226
227 DEBUG(3, ("[%5lu]: sid to uid %s\n", (unsigned long)state->pid,
228 state->request.data.sid));
229
230 if (!string_to_sid(&sid, state->request.data.sid)) {
231 DEBUG(1, ("Could not get convert sid %s from string\n",
232 state->request.data.sid));
233 request_error(state);
234 return;
235 }
236
237 /* Validate the SID as a user. Hopefully this will hit cache.
238 Needed to prevent DoS by exhausting the uid allocation
239 range from random SIDs. */
240
241 winbindd_lookupsid_async( state->mem_ctx, &sid, sid2uid_lookupsid_recv, state );
242}
243
244/* Convert a sid to a gid. We assume we only have one rid attached to the
245 sid.*/
246
247static void sid2gid_recv(void *private_data, BOOL success, gid_t gid)
248{
249 struct winbindd_cli_state *state =
250 talloc_get_type_abort(private_data, struct winbindd_cli_state);
251
252 if (!success) {
253 DEBUG(5, ("Could not convert sid %s\n",
254 state->request.data.sid));
255 request_error(state);
256 return;
257 }
258
259 state->response.data.gid = gid;
260 request_ok(state);
261}
262
263static void sid2gid_lookupsid_recv( void *private_data, BOOL success,
264 const char *domain_name,
265 const char *name,
266 enum lsa_SidType type)
267{
268 struct winbindd_cli_state *state =
269 talloc_get_type_abort(private_data, struct winbindd_cli_state);
270 DOM_SID sid;
271
272 if (!success) {
273 DEBUG(5, ("sid2gid_lookupsid_recv: Could not convert get sid type for %s\n",
274 state->request.data.sid));
275 request_error(state);
276 return;
277 }
278
279 if ( (type!=SID_NAME_DOM_GRP) &&
280 (type!=SID_NAME_ALIAS) &&
281 (type!=SID_NAME_WKN_GRP) )
282 {
283 DEBUG(5,("sid2gid_lookupsid_recv: Sid %s is not a group.\n",
284 state->request.data.sid));
285 request_error(state);
286 return;
287 }
288
289 if (!string_to_sid(&sid, state->request.data.sid)) {
290 DEBUG(1, ("sid2gid_lookupsid_recv: Could not get convert sid %s from string\n",
291 state->request.data.sid));
292 request_error(state);
293 return;
294 }
295
296 /* always use the async interface (may block) */
297 winbindd_sid2gid_async(state->mem_ctx, &sid, sid2gid_recv, state);
298}
299
300void winbindd_sid_to_gid(struct winbindd_cli_state *state)
301{
302 DOM_SID sid;
303
304 /* Ensure null termination */
305 state->request.data.sid[sizeof(state->request.data.sid)-1]='\0';
306
307 DEBUG(3, ("[%5lu]: sid to gid %s\n", (unsigned long)state->pid,
308 state->request.data.sid));
309
310 if (!string_to_sid(&sid, state->request.data.sid)) {
311 DEBUG(1, ("Could not get convert sid %s from string\n",
312 state->request.data.sid));
313 request_error(state);
314 return;
315 }
316
317 /* Validate the SID as a group. Hopefully this will hit cache.
318 Needed to prevent DoS by exhausting the uid allocation
319 range from random SIDs. */
320
321 winbindd_lookupsid_async( state->mem_ctx, &sid, sid2gid_lookupsid_recv, state );
322}
323
324static void sids2xids_recv(void *private_data, BOOL success, void *data, int len)
325{
326 struct winbindd_cli_state *state =
327 talloc_get_type_abort(private_data, struct winbindd_cli_state);
328
329 if (!success) {
330 DEBUG(5, ("Could not convert sids to xids\n"));
331 request_error(state);
332 return;
333 }
334
335 state->response.extra_data.data = data;
336 state->response.length = sizeof(state->response) + len;
337 request_ok(state);
338}
339
340void winbindd_sids_to_unixids(struct winbindd_cli_state *state)
341{
342 DEBUG(3, ("[%5lu]: sids to xids\n", (unsigned long)state->pid));
343
344 winbindd_sids2xids_async(state->mem_ctx,
345 state->request.extra_data.data,
346 state->request.extra_len,
347 sids2xids_recv, state);
348}
349
350static void set_mapping_recv(void *private_data, BOOL success)
351{
352 struct winbindd_cli_state *state =
353 talloc_get_type_abort(private_data, struct winbindd_cli_state);
354
355 if (!success) {
356 DEBUG(5, ("Could not set sid mapping\n"));
357 request_error(state);
358 return;
359 }
360
361 request_ok(state);
362}
363
364void winbindd_set_mapping(struct winbindd_cli_state *state)
365{
366 struct id_map map;
367 DOM_SID sid;
368
369 DEBUG(3, ("[%5lu]: set id map\n", (unsigned long)state->pid));
370
371 if ( ! state->privileged) {
372 DEBUG(0, ("Only root is allowed to set mappings!\n"));
373 request_error(state);
374 return;
375 }
376
377 if (!string_to_sid(&sid, state->request.data.dual_idmapset.sid)) {
378 DEBUG(1, ("Could not get convert sid %s from string\n",
379 state->request.data.sid));
380 request_error(state);
381 return;
382 }
383
384 map.sid = &sid;
385 map.xid.id = state->request.data.dual_idmapset.id;
386 map.xid.type = state->request.data.dual_idmapset.type;
387
388 winbindd_set_mapping_async(state->mem_ctx, &map,
389 set_mapping_recv, state);
390}
391
392static void set_hwm_recv(void *private_data, BOOL success)
393{
394 struct winbindd_cli_state *state =
395 talloc_get_type_abort(private_data, struct winbindd_cli_state);
396
397 if (!success) {
398 DEBUG(5, ("Could not set sid mapping\n"));
399 request_error(state);
400 return;
401 }
402
403 request_ok(state);
404}
405
406void winbindd_set_hwm(struct winbindd_cli_state *state)
407{
408 struct unixid xid;
409
410 DEBUG(3, ("[%5lu]: set hwm\n", (unsigned long)state->pid));
411
412 if ( ! state->privileged) {
413 DEBUG(0, ("Only root is allowed to set mappings!\n"));
414 request_error(state);
415 return;
416 }
417
418 xid.id = state->request.data.dual_idmapset.id;
419 xid.type = state->request.data.dual_idmapset.type;
420
421 winbindd_set_hwm_async(state->mem_ctx, &xid, set_hwm_recv, state);
422}
423
424/* Convert a uid to a sid */
425
426static void uid2sid_recv(void *private_data, BOOL success, const char *sid)
427{
428 struct winbindd_cli_state *state =
429 (struct winbindd_cli_state *)private_data;
430
431 if (success) {
432 DEBUG(10,("uid2sid: uid %lu has sid %s\n",
433 (unsigned long)(state->request.data.uid), sid));
434 fstrcpy(state->response.data.sid.sid, sid);
435 state->response.data.sid.type = SID_NAME_USER;
436 request_ok(state);
437 return;
438 }
439
440 request_error(state);
441 return;
442}
443
444void winbindd_uid_to_sid(struct winbindd_cli_state *state)
445{
446 DEBUG(3, ("[%5lu]: uid to sid %lu\n", (unsigned long)state->pid,
447 (unsigned long)state->request.data.uid));
448
449 /* always go via the async interface (may block) */
450 winbindd_uid2sid_async(state->mem_ctx, state->request.data.uid, uid2sid_recv, state);
451}
452
453/* Convert a gid to a sid */
454
455static void gid2sid_recv(void *private_data, BOOL success, const char *sid)
456{
457 struct winbindd_cli_state *state =
458 (struct winbindd_cli_state *)private_data;
459
460 if (success) {
461 DEBUG(10,("gid2sid: gid %lu has sid %s\n",
462 (unsigned long)(state->request.data.gid), sid));
463 fstrcpy(state->response.data.sid.sid, sid);
464 state->response.data.sid.type = SID_NAME_DOM_GRP;
465 request_ok(state);
466 return;
467 }
468
469 request_error(state);
470 return;
471}
472
473
474void winbindd_gid_to_sid(struct winbindd_cli_state *state)
475{
476 DEBUG(3, ("[%5lu]: gid to sid %lu\n", (unsigned long)state->pid,
477 (unsigned long)state->request.data.gid));
478
479 /* always use async calls (may block) */
480 winbindd_gid2sid_async(state->mem_ctx, state->request.data.gid, gid2sid_recv, state);
481}
482
483void winbindd_allocate_uid(struct winbindd_cli_state *state)
484{
485 if ( !state->privileged ) {
486 DEBUG(2, ("winbindd_allocate_uid: non-privileged access "
487 "denied!\n"));
488 request_error(state);
489 return;
490 }
491
492 sendto_child(state, idmap_child());
493}
494
495enum winbindd_result winbindd_dual_allocate_uid(struct winbindd_domain *domain,
496 struct winbindd_cli_state *state)
497{
498 struct unixid xid;
499
500 if (!NT_STATUS_IS_OK(idmap_allocate_uid(&xid))) {
501 return WINBINDD_ERROR;
502 }
503 state->response.data.uid = xid.id;
504 return WINBINDD_OK;
505}
506
507void winbindd_allocate_gid(struct winbindd_cli_state *state)
508{
509 if ( !state->privileged ) {
510 DEBUG(2, ("winbindd_allocate_gid: non-privileged access "
511 "denied!\n"));
512 request_error(state);
513 return;
514 }
515
516 sendto_child(state, idmap_child());
517}
518
519enum winbindd_result winbindd_dual_allocate_gid(struct winbindd_domain *domain,
520 struct winbindd_cli_state *state)
521{
522 struct unixid xid;
523
524 if (!NT_STATUS_IS_OK(idmap_allocate_gid(&xid))) {
525 return WINBINDD_ERROR;
526 }
527 state->response.data.gid = xid.id;
528 return WINBINDD_OK;
529}
530
531static void dump_maps_recv(void *private_data, BOOL success)
532{
533 struct winbindd_cli_state *state =
534 talloc_get_type_abort(private_data, struct winbindd_cli_state);
535
536 if (!success) {
537 DEBUG(5, ("Could not dump maps\n"));
538 request_error(state);
539 return;
540 }
541
542 request_ok(state);
543}
544
545void winbindd_dump_maps(struct winbindd_cli_state *state)
546{
547 if ( ! state->privileged) {
548 DEBUG(0, ("Only root is allowed to ask for an idmap dump!\n"));
549 request_error(state);
550 return;
551 }
552
553 DEBUG(3, ("[%5lu]: dump maps\n", (unsigned long)state->pid));
554
555 winbindd_dump_maps_async(state->mem_ctx,
556 state->request.extra_data.data,
557 state->request.extra_len,
558 dump_maps_recv, state);
559}
560
Note: See TracBrowser for help on using the repository browser.