source: trunk/server/source3/utils/smbcacls.c@ 559

Last change on this file since 559 was 414, checked in by Herwig Bauernfeind, 16 years ago

Samba 3.5.0: Initial import
File size: 26.4 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3 ACL get/set utility
4
5 Copyright (C) Andrew Tridgell 2000
6 Copyright (C) Tim Potter 2000
7 Copyright (C) Jeremy Allison 2000
8 Copyright (C) Jelmer Vernooij 2003
9
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 3 of the License, or
13 (at your option) any later version.
14
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.
19
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
22*/
23
24#include "includes.h"
25
26extern bool AllowDebugChange;
27
28static int test_args;
29
30#define CREATE_ACCESS_READ READ_CONTROL_ACCESS
31
32/* numeric is set when the user wants numeric SIDs and ACEs rather
33 than going via LSA calls to resolve them */
34static int numeric;
35
36enum acl_mode {SMB_ACL_SET, SMB_ACL_DELETE, SMB_ACL_MODIFY, SMB_ACL_ADD };
37enum chown_mode {REQUEST_NONE, REQUEST_CHOWN, REQUEST_CHGRP};
38enum exit_values {EXIT_OK, EXIT_FAILED, EXIT_PARSE_ERROR};
39
40struct perm_value {
41 const char *perm;
42 uint32 mask;
43};
44
45/* These values discovered by inspection */
46
47static const struct perm_value special_values[] = {
48 { "R", 0x00120089 },
49 { "W", 0x00120116 },
50 { "X", 0x001200a0 },
51 { "D", 0x00010000 },
52 { "P", 0x00040000 },
53 { "O", 0x00080000 },
54 { NULL, 0 },
55};
56
57static const struct perm_value standard_values[] = {
58 { "READ", 0x001200a9 },
59 { "CHANGE", 0x001301bf },
60 { "FULL", 0x001f01ff },
61 { NULL, 0 },
62};
63
64/* Open cli connection and policy handle */
65
66static NTSTATUS cli_lsa_lookup_sid(struct cli_state *cli,
67 const DOM_SID *sid,
68 TALLOC_CTX *mem_ctx,
69 enum lsa_SidType *type,
70 char **domain, char **name)
71{
72 uint16 orig_cnum = cli->cnum;
73 struct rpc_pipe_client *p = NULL;
74 struct policy_handle handle;
75 NTSTATUS status;
76 TALLOC_CTX *frame = talloc_stackframe();
77 enum lsa_SidType *types;
78 char **domains;
79 char **names;
80
81 status = cli_tcon_andx(cli, "IPC$", "?????", "", 0);
82 if (!NT_STATUS_IS_OK(status)) {
83 return status;
84 }
85
86 status = cli_rpc_pipe_open_noauth(cli, &ndr_table_lsarpc.syntax_id,
87 &p);
88 if (!NT_STATUS_IS_OK(status)) {
89 goto fail;
90 }
91
92 status = rpccli_lsa_open_policy(p, talloc_tos(), True,
93 GENERIC_EXECUTE_ACCESS, &handle);
94 if (!NT_STATUS_IS_OK(status)) {
95 goto fail;
96 }
97
98 status = rpccli_lsa_lookup_sids(p, talloc_tos(), &handle, 1, sid,
99 &domains, &names, &types);
100 if (!NT_STATUS_IS_OK(status)) {
101 goto fail;
102 }
103
104 *type = types[0];
105 *domain = talloc_move(mem_ctx, &domains[0]);
106 *name = talloc_move(mem_ctx, &names[0]);
107
108 status = NT_STATUS_OK;
109 fail:
110 TALLOC_FREE(p);
111 cli_tdis(cli);
112 cli->cnum = orig_cnum;
113 TALLOC_FREE(frame);
114 return status;
115}
116
117static NTSTATUS cli_lsa_lookup_name(struct cli_state *cli,
118 const char *name,
119 enum lsa_SidType *type,
120 DOM_SID *sid)
121{
122 uint16 orig_cnum = cli->cnum;
123 struct rpc_pipe_client *p;
124 struct policy_handle handle;
125 NTSTATUS status;
126 TALLOC_CTX *frame = talloc_stackframe();
127 DOM_SID *sids;
128 enum lsa_SidType *types;
129
130 status = cli_tcon_andx(cli, "IPC$", "?????", "", 0);
131 if (!NT_STATUS_IS_OK(status)) {
132 return status;
133 }
134
135 status = cli_rpc_pipe_open_noauth(cli, &ndr_table_lsarpc.syntax_id,
136 &p);
137 if (!NT_STATUS_IS_OK(status)) {
138 goto fail;
139 }
140
141 status = rpccli_lsa_open_policy(p, talloc_tos(), True,
142 GENERIC_EXECUTE_ACCESS, &handle);
143 if (!NT_STATUS_IS_OK(status)) {
144 goto fail;
145 }
146
147 status = rpccli_lsa_lookup_names(p, talloc_tos(), &handle, 1, &name,
148 NULL, 1, &sids, &types);
149 if (!NT_STATUS_IS_OK(status)) {
150 goto fail;
151 }
152
153 *type = types[0];
154 *sid = sids[0];
155
156 status = NT_STATUS_OK;
157 fail:
158 TALLOC_FREE(p);
159 cli_tdis(cli);
160 cli->cnum = orig_cnum;
161 TALLOC_FREE(frame);
162 return status;
163}
164
165/* convert a SID to a string, either numeric or username/group */
166static void SidToString(struct cli_state *cli, fstring str, const DOM_SID *sid)
167{
168 char *domain = NULL;
169 char *name = NULL;
170 enum lsa_SidType type;
171 NTSTATUS status;
172
173 sid_to_fstring(str, sid);
174
175 if (numeric) {
176 return;
177 }
178
179 status = cli_lsa_lookup_sid(cli, sid, talloc_tos(), &type,
180 &domain, &name);
181
182 if (!NT_STATUS_IS_OK(status)) {
183 return;
184 }
185
186 if (*domain) {
187 slprintf(str, sizeof(fstring) - 1, "%s%s%s",
188 domain, lp_winbind_separator(), name);
189 } else {
190 fstrcpy(str, name);
191 }
192}
193
194/* convert a string to a SID, either numeric or username/group */
195static bool StringToSid(struct cli_state *cli, DOM_SID *sid, const char *str)
196{
197 enum lsa_SidType type;
198
199 if (strncmp(str, "S-", 2) == 0) {
200 return string_to_sid(sid, str);
201 }
202
203 return NT_STATUS_IS_OK(cli_lsa_lookup_name(cli, str, &type, sid));
204}
205
206static void print_ace_flags(FILE *f, uint8_t flags)
207{
208 char *str = talloc_strdup(NULL, "");
209
210 if (!str) {
211 goto out;
212 }
213
214 if (flags & SEC_ACE_FLAG_OBJECT_INHERIT) {
215 str = talloc_asprintf(str, "%s%s",
216 str, "OI|");
217 if (!str) {
218 goto out;
219 }
220 }
221 if (flags & SEC_ACE_FLAG_CONTAINER_INHERIT) {
222 str = talloc_asprintf(str, "%s%s",
223 str, "CI|");
224 if (!str) {
225 goto out;
226 }
227 }
228 if (flags & SEC_ACE_FLAG_NO_PROPAGATE_INHERIT) {
229 str = talloc_asprintf(str, "%s%s",
230 str, "NP|");
231 if (!str) {
232 goto out;
233 }
234 }
235 if (flags & SEC_ACE_FLAG_INHERIT_ONLY) {
236 str = talloc_asprintf(str, "%s%s",
237 str, "IO|");
238 if (!str) {
239 goto out;
240 }
241 }
242 if (flags & SEC_ACE_FLAG_INHERITED_ACE) {
243 str = talloc_asprintf(str, "%s%s",
244 str, "I|");
245 if (!str) {
246 goto out;
247 }
248 }
249 /* Ignore define SEC_ACE_FLAG_SUCCESSFUL_ACCESS ( 0x40 )
250 and SEC_ACE_FLAG_FAILED_ACCESS ( 0x80 ) as they're
251 audit ace flags. */
252
253 if (str[strlen(str)-1] == '|') {
254 str[strlen(str)-1] = '\0';
255 fprintf(f, "/%s/", str);
256 } else {
257 fprintf(f, "/0x%x/", flags);
258 }
259 TALLOC_FREE(str);
260 return;
261
262 out:
263 fprintf(f, "/0x%x/", flags);
264}
265
266/* print an ACE on a FILE, using either numeric or ascii representation */
267static void print_ace(struct cli_state *cli, FILE *f, SEC_ACE *ace)
268{
269 const struct perm_value *v;
270 fstring sidstr;
271 int do_print = 0;
272 uint32 got_mask;
273
274 SidToString(cli, sidstr, &ace->trustee);
275
276 fprintf(f, "%s:", sidstr);
277
278 if (numeric) {
279 fprintf(f, "%d/0x%x/0x%08x",
280 ace->type, ace->flags, ace->access_mask);
281 return;
282 }
283
284 /* Ace type */
285
286 if (ace->type == SEC_ACE_TYPE_ACCESS_ALLOWED) {
287 fprintf(f, "ALLOWED");
288 } else if (ace->type == SEC_ACE_TYPE_ACCESS_DENIED) {
289 fprintf(f, "DENIED");
290 } else {
291 fprintf(f, "%d", ace->type);
292 }
293
294 print_ace_flags(f, ace->flags);
295
296 /* Standard permissions */
297
298 for (v = standard_values; v->perm; v++) {
299 if (ace->access_mask == v->mask) {
300 fprintf(f, "%s", v->perm);
301 return;
302 }
303 }
304
305 /* Special permissions. Print out a hex value if we have
306 leftover bits in the mask. */
307
308 got_mask = ace->access_mask;
309
310 again:
311 for (v = special_values; v->perm; v++) {
312 if ((ace->access_mask & v->mask) == v->mask) {
313 if (do_print) {
314 fprintf(f, "%s", v->perm);
315 }
316 got_mask &= ~v->mask;
317 }
318 }
319
320 if (!do_print) {
321 if (got_mask != 0) {
322 fprintf(f, "0x%08x", ace->access_mask);
323 } else {
324 do_print = 1;
325 goto again;
326 }
327 }
328}
329
330static bool parse_ace_flags(const char *str, unsigned int *pflags)
331{
332 const char *p = str;
333 *pflags = 0;
334
335 while (*p) {
336 if (strnequal(p, "OI", 2)) {
337 *pflags |= SEC_ACE_FLAG_OBJECT_INHERIT;
338 p += 2;
339 } else if (strnequal(p, "CI", 2)) {
340 *pflags |= SEC_ACE_FLAG_CONTAINER_INHERIT;
341 p += 2;
342 } else if (strnequal(p, "NP", 2)) {
343 *pflags |= SEC_ACE_FLAG_NO_PROPAGATE_INHERIT;
344 p += 2;
345 } else if (strnequal(p, "IO", 2)) {
346 *pflags |= SEC_ACE_FLAG_INHERIT_ONLY;
347 p += 2;
348 } else if (*p == 'I') {
349 *pflags |= SEC_ACE_FLAG_INHERITED_ACE;
350 p += 1;
351 } else if (*p) {
352 return false;
353 }
354
355 if (*p != '|' && *p != '\0') {
356 return false;
357 }
358 }
359 return true;
360}
361
362/* parse an ACE in the same format as print_ace() */
363static bool parse_ace(struct cli_state *cli, SEC_ACE *ace,
364 const char *orig_str)
365{
366 char *p;
367 const char *cp;
368 char *tok;
369 unsigned int atype = 0;
370 unsigned int aflags = 0;
371 unsigned int amask = 0;
372 DOM_SID sid;
373 uint32_t mask;
374 const struct perm_value *v;
375 char *str = SMB_STRDUP(orig_str);
376 TALLOC_CTX *frame = talloc_stackframe();
377
378 if (!str) {
379 TALLOC_FREE(frame);
380 return False;
381 }
382
383 ZERO_STRUCTP(ace);
384 p = strchr_m(str,':');
385 if (!p) {
386 printf("ACE '%s': missing ':'.\n", orig_str);
387 SAFE_FREE(str);
388 TALLOC_FREE(frame);
389 return False;
390 }
391 *p = '\0';
392 p++;
393 /* Try to parse numeric form */
394
395 if (sscanf(p, "%i/%i/%i", &atype, &aflags, &amask) == 3 &&
396 StringToSid(cli, &sid, str)) {
397 goto done;
398 }
399
400 /* Try to parse text form */
401
402 if (!StringToSid(cli, &sid, str)) {
403 printf("ACE '%s': failed to convert '%s' to SID\n",
404 orig_str, str);
405 SAFE_FREE(str);
406 TALLOC_FREE(frame);
407 return False;
408 }
409
410 cp = p;
411 if (!next_token_talloc(frame, &cp, &tok, "/")) {
412 printf("ACE '%s': failed to find '/' character.\n",
413 orig_str);
414 SAFE_FREE(str);
415 TALLOC_FREE(frame);
416 return False;
417 }
418
419 if (strncmp(tok, "ALLOWED", strlen("ALLOWED")) == 0) {
420 atype = SEC_ACE_TYPE_ACCESS_ALLOWED;
421 } else if (strncmp(tok, "DENIED", strlen("DENIED")) == 0) {
422 atype = SEC_ACE_TYPE_ACCESS_DENIED;
423 } else {
424 printf("ACE '%s': missing 'ALLOWED' or 'DENIED' entry at '%s'\n",
425 orig_str, tok);
426 SAFE_FREE(str);
427 TALLOC_FREE(frame);
428 return False;
429 }
430
431 /* Only numeric form accepted for flags at present */
432
433 if (!next_token_talloc(frame, &cp, &tok, "/")) {
434 printf("ACE '%s': bad flags entry at '%s'\n",
435 orig_str, tok);
436 SAFE_FREE(str);
437 TALLOC_FREE(frame);
438 return False;
439 }
440
441 if (tok[0] < '0' || tok[0] > '9') {
442 if (!parse_ace_flags(tok, &aflags)) {
443 printf("ACE '%s': bad named flags entry at '%s'\n",
444 orig_str, tok);
445 SAFE_FREE(str);
446 TALLOC_FREE(frame);
447 return False;
448 }
449 } else if (strnequal(tok, "0x", 2)) {
450 if (!sscanf(tok, "%x", &aflags)) {
451 printf("ACE '%s': bad hex flags entry at '%s'\n",
452 orig_str, tok);
453 SAFE_FREE(str);
454 TALLOC_FREE(frame);
455 return False;
456 }
457 } else {
458 if (!sscanf(tok, "%i", &aflags)) {
459 printf("ACE '%s': bad integer flags entry at '%s'\n",
460 orig_str, tok);
461 SAFE_FREE(str);
462 TALLOC_FREE(frame);
463 return False;
464 }
465 }
466
467 if (!next_token_talloc(frame, &cp, &tok, "/")) {
468 printf("ACE '%s': missing / at '%s'\n",
469 orig_str, tok);
470 SAFE_FREE(str);
471 TALLOC_FREE(frame);
472 return False;
473 }
474
475 if (strncmp(tok, "0x", 2) == 0) {
476 if (sscanf(tok, "%i", &amask) != 1) {
477 printf("ACE '%s': bad hex number at '%s'\n",
478 orig_str, tok);
479 SAFE_FREE(str);
480 TALLOC_FREE(frame);
481 return False;
482 }
483 goto done;
484 }
485
486 for (v = standard_values; v->perm; v++) {
487 if (strcmp(tok, v->perm) == 0) {
488 amask = v->mask;
489 goto done;
490 }
491 }
492
493 p = tok;
494
495 while(*p) {
496 bool found = False;
497
498 for (v = special_values; v->perm; v++) {
499 if (v->perm[0] == *p) {
500 amask |= v->mask;
501 found = True;
502 }
503 }
504
505 if (!found) {
506 printf("ACE '%s': bad permission value at '%s'\n",
507 orig_str, p);
508 SAFE_FREE(str);
509 TALLOC_FREE(frame);
510 return False;
511 }
512 p++;
513 }
514
515 if (*p) {
516 TALLOC_FREE(frame);
517 SAFE_FREE(str);
518 return False;
519 }
520
521 done:
522 mask = amask;
523 init_sec_ace(ace, &sid, atype, mask, aflags);
524 TALLOC_FREE(frame);
525 SAFE_FREE(str);
526 return True;
527}
528
529/* add an ACE to a list of ACEs in a SEC_ACL */
530static bool add_ace(SEC_ACL **the_acl, SEC_ACE *ace)
531{
532 SEC_ACL *new_ace;
533 SEC_ACE *aces;
534 if (! *the_acl) {
535 return (((*the_acl) = make_sec_acl(talloc_tos(), 3, 1, ace))
536 != NULL);
537 }
538
539 if (!(aces = SMB_CALLOC_ARRAY(SEC_ACE, 1+(*the_acl)->num_aces))) {
540 return False;
541 }
542 memcpy(aces, (*the_acl)->aces, (*the_acl)->num_aces * sizeof(SEC_ACE));
543 memcpy(aces+(*the_acl)->num_aces, ace, sizeof(SEC_ACE));
544 new_ace = make_sec_acl(talloc_tos(),(*the_acl)->revision,1+(*the_acl)->num_aces, aces);
545 SAFE_FREE(aces);
546 (*the_acl) = new_ace;
547 return True;
548}
549
550/* parse a ascii version of a security descriptor */
551static SEC_DESC *sec_desc_parse(TALLOC_CTX *ctx, struct cli_state *cli, char *str)
552{
553 const char *p = str;
554 char *tok;
555 SEC_DESC *ret = NULL;
556 size_t sd_size;
557 DOM_SID *grp_sid=NULL, *owner_sid=NULL;
558 SEC_ACL *dacl=NULL;
559 int revision=1;
560
561 while (next_token_talloc(ctx, &p, &tok, "\t,\r\n")) {
562 if (strncmp(tok,"REVISION:", 9) == 0) {
563 revision = strtol(tok+9, NULL, 16);
564 continue;
565 }
566
567 if (strncmp(tok,"OWNER:", 6) == 0) {
568 if (owner_sid) {
569 printf("Only specify owner once\n");
570 goto done;
571 }
572 owner_sid = SMB_CALLOC_ARRAY(DOM_SID, 1);
573 if (!owner_sid ||
574 !StringToSid(cli, owner_sid, tok+6)) {
575 printf("Failed to parse owner sid\n");
576 goto done;
577 }
578 continue;
579 }
580
581 if (strncmp(tok,"GROUP:", 6) == 0) {
582 if (grp_sid) {
583 printf("Only specify group once\n");
584 goto done;
585 }
586 grp_sid = SMB_CALLOC_ARRAY(DOM_SID, 1);
587 if (!grp_sid ||
588 !StringToSid(cli, grp_sid, tok+6)) {
589 printf("Failed to parse group sid\n");
590 goto done;
591 }
592 continue;
593 }
594
595 if (strncmp(tok,"ACL:", 4) == 0) {
596 SEC_ACE ace;
597 if (!parse_ace(cli, &ace, tok+4)) {
598 goto done;
599 }
600 if(!add_ace(&dacl, &ace)) {
601 printf("Failed to add ACL %s\n", tok);
602 goto done;
603 }
604 continue;
605 }
606
607 printf("Failed to parse token '%s' in security descriptor,\n", tok);
608 goto done;
609 }
610
611 ret = make_sec_desc(ctx,revision, SEC_DESC_SELF_RELATIVE, owner_sid, grp_sid,
612 NULL, dacl, &sd_size);
613
614 done:
615 SAFE_FREE(grp_sid);
616 SAFE_FREE(owner_sid);
617
618 return ret;
619}
620
621
622/* print a ascii version of a security descriptor on a FILE handle */
623static void sec_desc_print(struct cli_state *cli, FILE *f, SEC_DESC *sd)
624{
625 fstring sidstr;
626 uint32 i;
627
628 fprintf(f, "REVISION:%d\n", sd->revision);
629 fprintf(f, "CONTROL:0x%x\n", sd->type);
630
631 /* Print owner and group sid */
632
633 if (sd->owner_sid) {
634 SidToString(cli, sidstr, sd->owner_sid);
635 } else {
636 fstrcpy(sidstr, "");
637 }
638
639 fprintf(f, "OWNER:%s\n", sidstr);
640
641 if (sd->group_sid) {
642 SidToString(cli, sidstr, sd->group_sid);
643 } else {
644 fstrcpy(sidstr, "");
645 }
646
647 fprintf(f, "GROUP:%s\n", sidstr);
648
649 /* Print aces */
650 for (i = 0; sd->dacl && i < sd->dacl->num_aces; i++) {
651 SEC_ACE *ace = &sd->dacl->aces[i];
652 fprintf(f, "ACL:");
653 print_ace(cli, f, ace);
654 fprintf(f, "\n");
655 }
656
657}
658
659/*****************************************************
660dump the acls for a file
661*******************************************************/
662static int cacl_dump(struct cli_state *cli, char *filename)
663{
664 int result = EXIT_FAILED;
665 uint16_t fnum = (uint16_t)-1;
666 SEC_DESC *sd;
667
668 if (test_args)
669 return EXIT_OK;
670
671 if (!NT_STATUS_IS_OK(cli_ntcreate(cli, filename, 0, CREATE_ACCESS_READ, 0,
672 FILE_SHARE_READ|FILE_SHARE_WRITE, FILE_OPEN, 0x0, 0x0, &fnum))) {
673 printf("Failed to open %s: %s\n", filename, cli_errstr(cli));
674 goto done;
675 }
676
677 sd = cli_query_secdesc(cli, fnum, talloc_tos());
678
679 if (!sd) {
680 printf("ERROR: secdesc query failed: %s\n", cli_errstr(cli));
681 goto done;
682 }
683
684 sec_desc_print(cli, stdout, sd);
685
686 result = EXIT_OK;
687
688done:
689 if (fnum != (uint16_t)-1)
690 cli_close(cli, fnum);
691
692 return result;
693}
694
695/*****************************************************
696Change the ownership or group ownership of a file. Just
697because the NT docs say this can't be done :-). JRA.
698*******************************************************/
699
700static int owner_set(struct cli_state *cli, enum chown_mode change_mode,
701 const char *filename, const char *new_username)
702{
703 uint16_t fnum;
704 DOM_SID sid;
705 SEC_DESC *sd, *old;
706 size_t sd_size;
707
708 if (!NT_STATUS_IS_OK(cli_ntcreate(cli, filename, 0, CREATE_ACCESS_READ, 0,
709 FILE_SHARE_READ|FILE_SHARE_WRITE, FILE_OPEN, 0x0, 0x0, &fnum))) {
710 printf("Failed to open %s: %s\n", filename, cli_errstr(cli));
711 return EXIT_FAILED;
712 }
713
714 if (!StringToSid(cli, &sid, new_username))
715 return EXIT_PARSE_ERROR;
716
717 old = cli_query_secdesc(cli, fnum, talloc_tos());
718
719 cli_close(cli, fnum);
720
721 if (!old) {
722 printf("owner_set: Failed to query old descriptor\n");
723 return EXIT_FAILED;
724 }
725
726 sd = make_sec_desc(talloc_tos(),old->revision, old->type,
727 (change_mode == REQUEST_CHOWN) ? &sid : NULL,
728 (change_mode == REQUEST_CHGRP) ? &sid : NULL,
729 NULL, NULL, &sd_size);
730
731 if (!NT_STATUS_IS_OK(cli_ntcreate(cli, filename, 0, WRITE_OWNER_ACCESS, 0,
732 FILE_SHARE_READ|FILE_SHARE_WRITE, FILE_OPEN, 0x0, 0x0, &fnum))) {
733 printf("Failed to open %s: %s\n", filename, cli_errstr(cli));
734 return EXIT_FAILED;
735 }
736
737 if (!cli_set_secdesc(cli, fnum, sd)) {
738 printf("ERROR: secdesc set failed: %s\n", cli_errstr(cli));
739 cli_close(cli, fnum);
740 return EXIT_FAILED;
741 }
742
743 cli_close(cli, fnum);
744
745 return EXIT_OK;
746}
747
748
749/* The MSDN is contradictory over the ordering of ACE entries in an
750 ACL. However NT4 gives a "The information may have been modified
751 by a computer running Windows NT 5.0" if denied ACEs do not appear
752 before allowed ACEs. At
753 http://technet.microsoft.com/en-us/library/cc781716.aspx the
754 canonical order is specified as "Explicit Deny, Explicit Allow,
755 Inherited ACEs unchanged" */
756
757static int ace_compare(SEC_ACE *ace1, SEC_ACE *ace2)
758{
759 if (sec_ace_equal(ace1, ace2))
760 return 0;
761
762 if ((ace1->flags & SEC_ACE_FLAG_INHERITED_ACE) &&
763 !(ace2->flags & SEC_ACE_FLAG_INHERITED_ACE))
764 return 1;
765 if (!(ace1->flags & SEC_ACE_FLAG_INHERITED_ACE) &&
766 (ace2->flags & SEC_ACE_FLAG_INHERITED_ACE))
767 return -1;
768 if ((ace1->flags & SEC_ACE_FLAG_INHERITED_ACE) &&
769 (ace2->flags & SEC_ACE_FLAG_INHERITED_ACE))
770 return ace1 - ace2;
771
772 if (ace1->type != ace2->type)
773 return ace2->type - ace1->type;
774
775 if (sid_compare(&ace1->trustee, &ace2->trustee))
776 return sid_compare(&ace1->trustee, &ace2->trustee);
777
778 if (ace1->flags != ace2->flags)
779 return ace1->flags - ace2->flags;
780
781 if (ace1->access_mask != ace2->access_mask)
782 return ace1->access_mask - ace2->access_mask;
783
784 if (ace1->size != ace2->size)
785 return ace1->size - ace2->size;
786
787 return memcmp(ace1, ace2, sizeof(SEC_ACE));
788}
789
790static void sort_acl(SEC_ACL *the_acl)
791{
792 uint32 i;
793 if (!the_acl) return;
794
795 qsort(the_acl->aces, the_acl->num_aces, sizeof(the_acl->aces[0]), QSORT_CAST ace_compare);
796
797 for (i=1;i<the_acl->num_aces;) {
798 if (sec_ace_equal(&the_acl->aces[i-1], &the_acl->aces[i])) {
799 int j;
800 for (j=i; j<the_acl->num_aces-1; j++) {
801 the_acl->aces[j] = the_acl->aces[j+1];
802 }
803 the_acl->num_aces--;
804 } else {
805 i++;
806 }
807 }
808}
809
810/*****************************************************
811set the ACLs on a file given an ascii description
812*******************************************************/
813
814static int cacl_set(struct cli_state *cli, char *filename,
815 char *the_acl, enum acl_mode mode)
816{
817 uint16_t fnum;
818 SEC_DESC *sd, *old;
819 uint32 i, j;
820 size_t sd_size;
821 int result = EXIT_OK;
822
823 sd = sec_desc_parse(talloc_tos(), cli, the_acl);
824
825 if (!sd) return EXIT_PARSE_ERROR;
826 if (test_args) return EXIT_OK;
827
828 /* The desired access below is the only one I could find that works
829 with NT4, W2KP and Samba */
830
831 if (!NT_STATUS_IS_OK(cli_ntcreate(cli, filename, 0, CREATE_ACCESS_READ, 0,
832 FILE_SHARE_READ|FILE_SHARE_WRITE, FILE_OPEN, 0x0, 0x0, &fnum))) {
833 printf("cacl_set failed to open %s: %s\n", filename, cli_errstr(cli));
834 return EXIT_FAILED;
835 }
836
837 old = cli_query_secdesc(cli, fnum, talloc_tos());
838
839 if (!old) {
840 printf("calc_set: Failed to query old descriptor\n");
841 return EXIT_FAILED;
842 }
843
844 cli_close(cli, fnum);
845
846 /* the logic here is rather more complex than I would like */
847 switch (mode) {
848 case SMB_ACL_DELETE:
849 for (i=0;sd->dacl && i<sd->dacl->num_aces;i++) {
850 bool found = False;
851
852 for (j=0;old->dacl && j<old->dacl->num_aces;j++) {
853 if (sec_ace_equal(&sd->dacl->aces[i],
854 &old->dacl->aces[j])) {
855 uint32 k;
856 for (k=j; k<old->dacl->num_aces-1;k++) {
857 old->dacl->aces[k] = old->dacl->aces[k+1];
858 }
859 old->dacl->num_aces--;
860 found = True;
861 break;
862 }
863 }
864
865 if (!found) {
866 printf("ACL for ACE:");
867 print_ace(cli, stdout, &sd->dacl->aces[i]);
868 printf(" not found\n");
869 }
870 }
871 break;
872
873 case SMB_ACL_MODIFY:
874 for (i=0;sd->dacl && i<sd->dacl->num_aces;i++) {
875 bool found = False;
876
877 for (j=0;old->dacl && j<old->dacl->num_aces;j++) {
878 if (sid_equal(&sd->dacl->aces[i].trustee,
879 &old->dacl->aces[j].trustee)) {
880 old->dacl->aces[j] = sd->dacl->aces[i];
881 found = True;
882 }
883 }
884
885 if (!found) {
886 fstring str;
887
888 SidToString(cli, str,
889 &sd->dacl->aces[i].trustee);
890 printf("ACL for SID %s not found\n", str);
891 }
892 }
893
894 if (sd->owner_sid) {
895 old->owner_sid = sd->owner_sid;
896 }
897
898 if (sd->group_sid) {
899 old->group_sid = sd->group_sid;
900 }
901
902 break;
903
904 case SMB_ACL_ADD:
905 for (i=0;sd->dacl && i<sd->dacl->num_aces;i++) {
906 add_ace(&old->dacl, &sd->dacl->aces[i]);
907 }
908 break;
909
910 case SMB_ACL_SET:
911 old = sd;
912 break;
913 }
914
915 /* Denied ACE entries must come before allowed ones */
916 sort_acl(old->dacl);
917
918 /* Create new security descriptor and set it */
919
920 /* We used to just have "WRITE_DAC_ACCESS" without WRITE_OWNER.
921 But if we're sending an owner, even if it's the same as the one
922 that already exists then W2K3 insists we open with WRITE_OWNER access.
923 I need to check that setting a SD with no owner set works against WNT
924 and W2K. JRA.
925 */
926
927 sd = make_sec_desc(talloc_tos(),old->revision, old->type,
928 old->owner_sid, old->group_sid,
929 NULL, old->dacl, &sd_size);
930
931 if (!NT_STATUS_IS_OK(cli_ntcreate(cli, filename, 0, WRITE_DAC_ACCESS|WRITE_OWNER_ACCESS, 0,
932 FILE_SHARE_READ|FILE_SHARE_WRITE, FILE_OPEN, 0x0, 0x0, &fnum))) {
933 printf("cacl_set failed to open %s: %s\n", filename, cli_errstr(cli));
934 return EXIT_FAILED;
935 }
936
937 if (!cli_set_secdesc(cli, fnum, sd)) {
938 printf("ERROR: secdesc set failed: %s\n", cli_errstr(cli));
939 result = EXIT_FAILED;
940 }
941
942 /* Clean up */
943
944 cli_close(cli, fnum);
945
946 return result;
947}
948
949
950/*****************************************************
951 Return a connection to a server.
952*******************************************************/
953static struct cli_state *connect_one(struct user_auth_info *auth_info,
954 const char *server, const char *share)
955{
956 struct cli_state *c = NULL;
957 struct sockaddr_storage ss;
958 NTSTATUS nt_status;
959 uint32_t flags = 0;
960
961 zero_sockaddr(&ss);
962
963 if (get_cmdline_auth_info_use_kerberos(auth_info)) {
964 flags |= CLI_FULL_CONNECTION_USE_KERBEROS |
965 CLI_FULL_CONNECTION_FALLBACK_AFTER_KERBEROS;
966 }
967
968 if (get_cmdline_auth_info_use_machine_account(auth_info) &&
969 !set_cmdline_auth_info_machine_account_creds(auth_info)) {
970 return NULL;
971 }
972
973 set_cmdline_auth_info_getpass(auth_info);
974
975 nt_status = cli_full_connection(&c, global_myname(), server,
976 &ss, 0,
977 share, "?????",
978 get_cmdline_auth_info_username(auth_info),
979 lp_workgroup(),
980 get_cmdline_auth_info_password(auth_info),
981 flags,
982 get_cmdline_auth_info_signing_state(auth_info),
983 NULL);
984 if (!NT_STATUS_IS_OK(nt_status)) {
985 DEBUG(0,("cli_full_connection failed! (%s)\n", nt_errstr(nt_status)));
986 return NULL;
987 }
988
989 if (get_cmdline_auth_info_smb_encrypt(auth_info)) {
990 nt_status = cli_cm_force_encryption(c,
991 get_cmdline_auth_info_username(auth_info),
992 get_cmdline_auth_info_password(auth_info),
993 lp_workgroup(),
994 share);
995 if (!NT_STATUS_IS_OK(nt_status)) {
996 cli_shutdown(c);
997 c = NULL;
998 }
999 }
1000
1001 return c;
1002}
1003
1004/****************************************************************************
1005 main program
1006****************************************************************************/
1007 int main(int argc, const char *argv[])
1008{
1009 char *share;
1010 int opt;
1011 enum acl_mode mode = SMB_ACL_SET;
1012 static char *the_acl = NULL;
1013 enum chown_mode change_mode = REQUEST_NONE;
1014 int result;
1015 char *path;
1016 char *filename = NULL;
1017 poptContext pc;
1018 struct poptOption long_options[] = {
1019 POPT_AUTOHELP
1020 { "delete", 'D', POPT_ARG_STRING, NULL, 'D', "Delete an acl", "ACL" },
1021 { "modify", 'M', POPT_ARG_STRING, NULL, 'M', "Modify an acl", "ACL" },
1022 { "add", 'a', POPT_ARG_STRING, NULL, 'a', "Add an acl", "ACL" },
1023 { "set", 'S', POPT_ARG_STRING, NULL, 'S', "Set acls", "ACLS" },
1024 { "chown", 'C', POPT_ARG_STRING, NULL, 'C', "Change ownership of a file", "USERNAME" },
1025 { "chgrp", 'G', POPT_ARG_STRING, NULL, 'G', "Change group ownership of a file", "GROUPNAME" },
1026 { "numeric", 0, POPT_ARG_NONE, &numeric, 1, "Don't resolve sids or masks to names" },
1027 { "test-args", 't', POPT_ARG_NONE, &test_args, 1, "Test arguments"},
1028 POPT_COMMON_SAMBA
1029 POPT_COMMON_CONNECTION
1030 POPT_COMMON_CREDENTIALS
1031 POPT_TABLEEND
1032 };
1033
1034 struct cli_state *cli;
1035 TALLOC_CTX *frame = talloc_stackframe();
1036 const char *owner_username = "";
1037 char *server;
1038 struct user_auth_info *auth_info;
1039
1040 load_case_tables();
1041
1042
1043 /* set default debug level to 1 regardless of what smb.conf sets */
1044 setup_logging( "smbcacls", True );
1045 DEBUGLEVEL_CLASS[DBGC_ALL] = 1;
1046 dbf = x_stderr;
1047 x_setbuf( x_stderr, NULL );
1048 AllowDebugChange = false;
1049
1050 setlinebuf(stdout);
1051
1052 lp_load(get_dyn_CONFIGFILE(),True,False,False,True);
1053 load_interfaces();
1054
1055 auth_info = user_auth_info_init(frame);
1056 if (auth_info == NULL) {
1057 exit(1);
1058 }
1059 popt_common_set_auth_info(auth_info);
1060
1061 pc = poptGetContext("smbcacls", argc, argv, long_options, 0);
1062
1063 poptSetOtherOptionHelp(pc, "//server1/share1 filename\nACLs look like: "
1064 "'ACL:user:[ALLOWED|DENIED]/flags/permissions'");
1065
1066 while ((opt = poptGetNextOpt(pc)) != -1) {
1067 switch (opt) {
1068 case 'S':
1069 the_acl = smb_xstrdup(poptGetOptArg(pc));
1070 mode = SMB_ACL_SET;
1071 break;
1072
1073 case 'D':
1074 the_acl = smb_xstrdup(poptGetOptArg(pc));
1075 mode = SMB_ACL_DELETE;
1076 break;
1077
1078 case 'M':
1079 the_acl = smb_xstrdup(poptGetOptArg(pc));
1080 mode = SMB_ACL_MODIFY;
1081 break;
1082
1083 case 'a':
1084 the_acl = smb_xstrdup(poptGetOptArg(pc));
1085 mode = SMB_ACL_ADD;
1086 break;
1087
1088 case 'C':
1089 owner_username = poptGetOptArg(pc);
1090 change_mode = REQUEST_CHOWN;
1091 break;
1092
1093 case 'G':
1094 owner_username = poptGetOptArg(pc);
1095 change_mode = REQUEST_CHGRP;
1096 break;
1097 }
1098 }
1099
1100 /* Make connection to server */
1101 if(!poptPeekArg(pc)) {
1102 poptPrintUsage(pc, stderr, 0);
1103 return -1;
1104 }
1105
1106 path = talloc_strdup(frame, poptGetArg(pc));
1107 if (!path) {
1108 return -1;
1109 }
1110
1111 if(!poptPeekArg(pc)) {
1112 poptPrintUsage(pc, stderr, 0);
1113 return -1;
1114 }
1115
1116 filename = talloc_strdup(frame, poptGetArg(pc));
1117 if (!filename) {
1118 return -1;
1119 }
1120
1121 string_replace(path,'/','\\');
1122
1123 server = talloc_strdup(frame, path+2);
1124 if (!server) {
1125 return -1;
1126 }
1127 share = strchr_m(server,'\\');
1128 if (!share) {
1129 printf("Invalid argument: %s\n", share);
1130 return -1;
1131 }
1132
1133 *share = 0;
1134 share++;
1135
1136 if (!test_args) {
1137 cli = connect_one(auth_info, server, share);
1138 if (!cli) {
1139 exit(EXIT_FAILED);
1140 }
1141 } else {
1142 exit(0);
1143 }
1144
1145 string_replace(filename, '/', '\\');
1146 if (filename[0] != '\\') {
1147 filename = talloc_asprintf(frame,
1148 "\\%s",
1149 filename);
1150 if (!filename) {
1151 return -1;
1152 }
1153 }
1154
1155 /* Perform requested action */
1156
1157 if (change_mode != REQUEST_NONE) {
1158 result = owner_set(cli, change_mode, filename, owner_username);
1159 } else if (the_acl) {
1160 result = cacl_set(cli, filename, the_acl, mode);
1161 } else {
1162 result = cacl_dump(cli, filename);
1163 }
1164
1165 TALLOC_FREE(frame);
1166
1167 return result;
1168}
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