source: branches/samba-3.2.x/source/winbindd/winbindd_sid.c@ 201

Last change on this file since 201 was 133, checked in by Paul Smedley, 18 years ago

Update trunk to 3.2.0pre3
File size: 13.2 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 3 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, see <http://www.gnu.org/licenses/>.
20*/
21
22#include "includes.h"
23#include "winbindd.h"
24
25#undef DBGC_CLASS
26#define DBGC_CLASS DBGC_WINBIND
27
28/* Convert a string */
29
30static void lookupsid_recv(void *private_data, bool success,
31 const char *dom_name, const char *name,
32 enum lsa_SidType type);
33
34void winbindd_lookupsid(struct winbindd_cli_state *state)
35{
36 DOM_SID sid;
37
38 /* Ensure null termination */
39 state->request.data.sid[sizeof(state->request.data.sid)-1]='\0';
40
41 DEBUG(3, ("[%5lu]: lookupsid %s\n", (unsigned long)state->pid,
42 state->request.data.sid));
43
44 if (!string_to_sid(&sid, state->request.data.sid)) {
45 DEBUG(5, ("%s not a SID\n", state->request.data.sid));
46 request_error(state);
47 return;
48 }
49
50 winbindd_lookupsid_async(state->mem_ctx, &sid, lookupsid_recv, state);
51}
52
53static void lookupsid_recv(void *private_data, bool success,
54 const char *dom_name, const char *name,
55 enum lsa_SidType type)
56{
57 struct winbindd_cli_state *state =
58 talloc_get_type_abort(private_data, struct winbindd_cli_state);
59
60 if (!success) {
61 DEBUG(5, ("lookupsid returned an error\n"));
62 request_error(state);
63 return;
64 }
65
66 fstrcpy(state->response.data.name.dom_name, dom_name);
67 fstrcpy(state->response.data.name.name, name);
68 state->response.data.name.type = type;
69 request_ok(state);
70}
71
72/**
73 * Look up the SID for a qualified name.
74 **/
75
76static void lookupname_recv(void *private_data, bool success,
77 const DOM_SID *sid, enum lsa_SidType type);
78
79void winbindd_lookupname(struct winbindd_cli_state *state)
80{
81 char *name_domain, *name_user;
82 char *p;
83
84 /* Ensure null termination */
85 state->request.data.name.dom_name[sizeof(state->request.data.name.dom_name)-1]='\0';
86
87 /* Ensure null termination */
88 state->request.data.name.name[sizeof(state->request.data.name.name)-1]='\0';
89
90 /* cope with the name being a fully qualified name */
91 p = strstr(state->request.data.name.name, lp_winbind_separator());
92 if (p) {
93 *p = 0;
94 name_domain = state->request.data.name.name;
95 name_user = p+1;
96 } else {
97 name_domain = state->request.data.name.dom_name;
98 name_user = state->request.data.name.name;
99 }
100
101 DEBUG(3, ("[%5lu]: lookupname %s%s%s\n", (unsigned long)state->pid,
102 name_domain, lp_winbind_separator(), name_user));
103
104 winbindd_lookupname_async(state->mem_ctx, name_domain, name_user,
105 lookupname_recv, WINBINDD_LOOKUPNAME,
106 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_fstring(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
155/* Convert a sid to a uid. We assume we only have one rid attached to the
156 sid. */
157
158static void sid2uid_recv(void *private_data, bool success, uid_t uid)
159{
160 struct winbindd_cli_state *state =
161 talloc_get_type_abort(private_data, struct winbindd_cli_state);
162
163 if (!success) {
164 DEBUG(5, ("Could not convert sid %s\n",
165 state->request.data.sid));
166 request_error(state);
167 return;
168 }
169
170 state->response.data.uid = uid;
171 request_ok(state);
172}
173
174static void sid2uid_lookupsid_recv( void *private_data, bool success,
175 const char *domain_name,
176 const char *name,
177 enum lsa_SidType type)
178{
179 struct winbindd_cli_state *state =
180 talloc_get_type_abort(private_data, struct winbindd_cli_state);
181 DOM_SID sid;
182
183 if (!success) {
184 DEBUG(5, ("sid2uid_lookupsid_recv Could not convert get sid type for %s\n",
185 state->request.data.sid));
186 request_error(state);
187 return;
188 }
189
190 if ( (type!=SID_NAME_USER) && (type!=SID_NAME_COMPUTER) ) {
191 DEBUG(5,("sid2uid_lookupsid_recv: Sid %s is not a user or a computer.\n",
192 state->request.data.sid));
193 request_error(state);
194 return;
195 }
196
197 if (!string_to_sid(&sid, state->request.data.sid)) {
198 DEBUG(1, ("sid2uid_lookupsid_recv: Could not get convert sid %s from string\n",
199 state->request.data.sid));
200 request_error(state);
201 return;
202 }
203
204 /* always use the async interface (may block) */
205 winbindd_sid2uid_async(state->mem_ctx, &sid, sid2uid_recv, state);
206}
207
208void winbindd_sid_to_uid(struct winbindd_cli_state *state)
209{
210 DOM_SID sid;
211
212 /* Ensure null termination */
213 state->request.data.sid[sizeof(state->request.data.sid)-1]='\0';
214
215 DEBUG(3, ("[%5lu]: sid to uid %s\n", (unsigned long)state->pid,
216 state->request.data.sid));
217
218 if (!string_to_sid(&sid, state->request.data.sid)) {
219 DEBUG(1, ("Could not get convert sid %s from string\n",
220 state->request.data.sid));
221 request_error(state);
222 return;
223 }
224
225 /* Validate the SID as a user. Hopefully this will hit cache.
226 Needed to prevent DoS by exhausting the uid allocation
227 range from random SIDs. */
228
229 winbindd_lookupsid_async( state->mem_ctx, &sid, sid2uid_lookupsid_recv, state );
230}
231
232/* Convert a sid to a gid. We assume we only have one rid attached to the
233 sid.*/
234
235static void sid2gid_recv(void *private_data, bool success, gid_t gid)
236{
237 struct winbindd_cli_state *state =
238 talloc_get_type_abort(private_data, struct winbindd_cli_state);
239
240 if (!success) {
241 DEBUG(5, ("Could not convert sid %s\n",
242 state->request.data.sid));
243 request_error(state);
244 return;
245 }
246
247 state->response.data.gid = gid;
248 request_ok(state);
249}
250
251static void sid2gid_lookupsid_recv( void *private_data, bool success,
252 const char *domain_name,
253 const char *name,
254 enum lsa_SidType type)
255{
256 struct winbindd_cli_state *state =
257 talloc_get_type_abort(private_data, struct winbindd_cli_state);
258 DOM_SID sid;
259
260 if (!success) {
261 DEBUG(5, ("sid2gid_lookupsid_recv: Could not get sid type for %s\n",
262 state->request.data.sid));
263 request_error(state);
264 return;
265 }
266
267 if ( (type!=SID_NAME_DOM_GRP) &&
268 (type!=SID_NAME_ALIAS) &&
269 (type!=SID_NAME_WKN_GRP) )
270 {
271 DEBUG(5,("sid2gid_lookupsid_recv: Sid %s is not a group.\n",
272 state->request.data.sid));
273 request_error(state);
274 return;
275 }
276
277 if (!string_to_sid(&sid, state->request.data.sid)) {
278 DEBUG(1, ("sid2gid_lookupsid_recv: Could not get convert sid %s from string\n",
279 state->request.data.sid));
280 request_error(state);
281 return;
282 }
283
284 /* always use the async interface (may block) */
285 winbindd_sid2gid_async(state->mem_ctx, &sid, sid2gid_recv, state);
286}
287
288void winbindd_sid_to_gid(struct winbindd_cli_state *state)
289{
290 DOM_SID sid;
291
292 /* Ensure null termination */
293 state->request.data.sid[sizeof(state->request.data.sid)-1]='\0';
294
295 DEBUG(3, ("[%5lu]: sid to gid %s\n", (unsigned long)state->pid,
296 state->request.data.sid));
297
298 if (!string_to_sid(&sid, state->request.data.sid)) {
299 DEBUG(1, ("Could not get convert sid %s from string\n",
300 state->request.data.sid));
301 request_error(state);
302 return;
303 }
304
305 /* Validate the SID as a group. Hopefully this will hit cache.
306 Needed to prevent DoS by exhausting the uid allocation
307 range from random SIDs. */
308
309 winbindd_lookupsid_async( state->mem_ctx, &sid, sid2gid_lookupsid_recv, state );
310}
311
312static void sids2xids_recv(void *private_data, bool success, void *data, int len)
313{
314 struct winbindd_cli_state *state =
315 talloc_get_type_abort(private_data, struct winbindd_cli_state);
316
317 if (!success) {
318 DEBUG(5, ("Could not convert sids to xids\n"));
319 request_error(state);
320 return;
321 }
322
323 state->response.extra_data.data = data;
324 state->response.length = sizeof(state->response) + len;
325 request_ok(state);
326}
327
328void winbindd_sids_to_unixids(struct winbindd_cli_state *state)
329{
330 DEBUG(3, ("[%5lu]: sids to xids\n", (unsigned long)state->pid));
331
332 winbindd_sids2xids_async(state->mem_ctx,
333 state->request.extra_data.data,
334 state->request.extra_len,
335 sids2xids_recv, state);
336}
337
338static void set_mapping_recv(void *private_data, bool success)
339{
340 struct winbindd_cli_state *state =
341 talloc_get_type_abort(private_data, struct winbindd_cli_state);
342
343 if (!success) {
344 DEBUG(5, ("Could not set sid mapping\n"));
345 request_error(state);
346 return;
347 }
348
349 request_ok(state);
350}
351
352void winbindd_set_mapping(struct winbindd_cli_state *state)
353{
354 struct id_map map;
355 DOM_SID sid;
356
357 DEBUG(3, ("[%5lu]: set id map\n", (unsigned long)state->pid));
358
359 if ( ! state->privileged) {
360 DEBUG(0, ("Only root is allowed to set mappings!\n"));
361 request_error(state);
362 return;
363 }
364
365 if (!string_to_sid(&sid, state->request.data.dual_idmapset.sid)) {
366 DEBUG(1, ("Could not get convert sid %s from string\n",
367 state->request.data.sid));
368 request_error(state);
369 return;
370 }
371
372 map.sid = &sid;
373 map.xid.id = state->request.data.dual_idmapset.id;
374 map.xid.type = state->request.data.dual_idmapset.type;
375
376 winbindd_set_mapping_async(state->mem_ctx, &map,
377 set_mapping_recv, state);
378}
379
380static void set_hwm_recv(void *private_data, bool success)
381{
382 struct winbindd_cli_state *state =
383 talloc_get_type_abort(private_data, struct winbindd_cli_state);
384
385 if (!success) {
386 DEBUG(5, ("Could not set sid mapping\n"));
387 request_error(state);
388 return;
389 }
390
391 request_ok(state);
392}
393
394void winbindd_set_hwm(struct winbindd_cli_state *state)
395{
396 struct unixid xid;
397
398 DEBUG(3, ("[%5lu]: set hwm\n", (unsigned long)state->pid));
399
400 if ( ! state->privileged) {
401 DEBUG(0, ("Only root is allowed to set mappings!\n"));
402 request_error(state);
403 return;
404 }
405
406 xid.id = state->request.data.dual_idmapset.id;
407 xid.type = state->request.data.dual_idmapset.type;
408
409 winbindd_set_hwm_async(state->mem_ctx, &xid, set_hwm_recv, state);
410}
411
412/* Convert a uid to a sid */
413
414static void uid2sid_recv(void *private_data, bool success, const char *sid)
415{
416 struct winbindd_cli_state *state =
417 (struct winbindd_cli_state *)private_data;
418
419 if (success) {
420 DEBUG(10,("uid2sid: uid %lu has sid %s\n",
421 (unsigned long)(state->request.data.uid), sid));
422 fstrcpy(state->response.data.sid.sid, sid);
423 state->response.data.sid.type = SID_NAME_USER;
424 request_ok(state);
425 return;
426 }
427
428 request_error(state);
429 return;
430}
431
432void winbindd_uid_to_sid(struct winbindd_cli_state *state)
433{
434 DEBUG(3, ("[%5lu]: uid to sid %lu\n", (unsigned long)state->pid,
435 (unsigned long)state->request.data.uid));
436
437 /* always go via the async interface (may block) */
438 winbindd_uid2sid_async(state->mem_ctx, state->request.data.uid, uid2sid_recv, state);
439}
440
441/* Convert a gid to a sid */
442
443static void gid2sid_recv(void *private_data, bool success, const char *sid)
444{
445 struct winbindd_cli_state *state =
446 (struct winbindd_cli_state *)private_data;
447
448 if (success) {
449 DEBUG(10,("gid2sid: gid %lu has sid %s\n",
450 (unsigned long)(state->request.data.gid), sid));
451 fstrcpy(state->response.data.sid.sid, sid);
452 state->response.data.sid.type = SID_NAME_DOM_GRP;
453 request_ok(state);
454 return;
455 }
456
457 request_error(state);
458 return;
459}
460
461
462void winbindd_gid_to_sid(struct winbindd_cli_state *state)
463{
464 DEBUG(3, ("[%5lu]: gid to sid %lu\n", (unsigned long)state->pid,
465 (unsigned long)state->request.data.gid));
466
467 /* always use async calls (may block) */
468 winbindd_gid2sid_async(state->mem_ctx, state->request.data.gid, gid2sid_recv, state);
469}
470
471void winbindd_allocate_uid(struct winbindd_cli_state *state)
472{
473 if ( !state->privileged ) {
474 DEBUG(2, ("winbindd_allocate_uid: non-privileged access "
475 "denied!\n"));
476 request_error(state);
477 return;
478 }
479
480 sendto_child(state, idmap_child());
481}
482
483enum winbindd_result winbindd_dual_allocate_uid(struct winbindd_domain *domain,
484 struct winbindd_cli_state *state)
485{
486 struct unixid xid;
487
488 if (!NT_STATUS_IS_OK(idmap_allocate_uid(&xid))) {
489 return WINBINDD_ERROR;
490 }
491 state->response.data.uid = xid.id;
492 return WINBINDD_OK;
493}
494
495void winbindd_allocate_gid(struct winbindd_cli_state *state)
496{
497 if ( !state->privileged ) {
498 DEBUG(2, ("winbindd_allocate_gid: non-privileged access "
499 "denied!\n"));
500 request_error(state);
501 return;
502 }
503
504 sendto_child(state, idmap_child());
505}
506
507enum winbindd_result winbindd_dual_allocate_gid(struct winbindd_domain *domain,
508 struct winbindd_cli_state *state)
509{
510 struct unixid xid;
511
512 if (!NT_STATUS_IS_OK(idmap_allocate_gid(&xid))) {
513 return WINBINDD_ERROR;
514 }
515 state->response.data.gid = xid.id;
516 return WINBINDD_OK;
517}
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