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s3-lib/util: fix logic inside set_namearray loops.
[Samba.git] / source3 / lib / util.c
blob7095da9bbd99f3f1476c223ec97636ba7b24a0e7
1 /*
2 Unix SMB/CIFS implementation.
3 Samba utility functions
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Jeremy Allison 2001-2007
6 Copyright (C) Simo Sorce 2001
7 Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
8 Copyright (C) James Peach 2006
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 #include "system/passwd.h"
26 #include "system/filesys.h"
27 #include "util_tdb.h"
28 #include "ctdbd_conn.h"
29 #include "../lib/util/util_pw.h"
30 #include "messages.h"
31 #include <ccan/hash/hash.h>
32 #include "libcli/security/security.h"
33 #include "serverid.h"
34
35 #ifdef HAVE_SYS_PRCTL_H
36 #include <sys/prctl.h>
37 #endif
38
39 /* Max allowable allococation - 256mb - 0x10000000 */
40 #define MAX_ALLOC_SIZE (1024*1024*256)
41
42 #if (defined(HAVE_NETGROUP) && defined (WITH_AUTOMOUNT))
43 #ifdef WITH_NISPLUS_HOME
44 #ifdef BROKEN_NISPLUS_INCLUDE_FILES
45 /*
46 * The following lines are needed due to buggy include files
47 * in Solaris 2.6 which define GROUP in both /usr/include/sys/acl.h and
48 * also in /usr/include/rpcsvc/nis.h. The definitions conflict. JRA.
49 * Also GROUP_OBJ is defined as 0x4 in /usr/include/sys/acl.h and as
50 * an enum in /usr/include/rpcsvc/nis.h.
51 */
52
53 #if defined(GROUP)
54 #undef GROUP
55 #endif
56
57 #if defined(GROUP_OBJ)
58 #undef GROUP_OBJ
59 #endif
60
61 #endif /* BROKEN_NISPLUS_INCLUDE_FILES */
62
63 #include <rpcsvc/nis.h>
64
65 #endif /* WITH_NISPLUS_HOME */
66 #endif /* HAVE_NETGROUP && WITH_AUTOMOUNT */
67
68 static enum protocol_types Protocol = PROTOCOL_COREPLUS;
69
70 enum protocol_types get_Protocol(void)
71 {
72 return Protocol;
73 }
74
75 void set_Protocol(enum protocol_types p)
76 {
77 Protocol = p;
78 }
79
80 static enum remote_arch_types ra_type = RA_UNKNOWN;
81
82 void gfree_all( void )
83 {
84 gfree_names();
85 gfree_loadparm();
86 gfree_charcnv();
87 gfree_interfaces();
88 gfree_debugsyms();
89 }
90
91 /*******************************************************************
92 Check if a file exists - call vfs_file_exist for samba files.
93 ********************************************************************/
94
95 bool file_exist_stat(const char *fname,SMB_STRUCT_STAT *sbuf,
96 bool fake_dir_create_times)
97 {
98 SMB_STRUCT_STAT st;
99 if (!sbuf)
100 sbuf = &st;
101
102 if (sys_stat(fname, sbuf, fake_dir_create_times) != 0)
103 return(False);
104
105 return((S_ISREG(sbuf->st_ex_mode)) || (S_ISFIFO(sbuf->st_ex_mode)));
106 }
107
108 /*******************************************************************
109 Check if a unix domain socket exists - call vfs_file_exist for samba files.
110 ********************************************************************/
111
112 bool socket_exist(const char *fname)
113 {
114 SMB_STRUCT_STAT st;
115 if (sys_stat(fname, &st, false) != 0)
116 return(False);
117
118 return S_ISSOCK(st.st_ex_mode);
119 }
120
121 /*******************************************************************
122 Returns the size in bytes of the named given the stat struct.
123 ********************************************************************/
124
125 uint64_t get_file_size_stat(const SMB_STRUCT_STAT *sbuf)
126 {
127 return sbuf->st_ex_size;
128 }
129
130 /****************************************************************************
131 Check two stats have identical dev and ino fields.
132 ****************************************************************************/
133
134 bool check_same_dev_ino(const SMB_STRUCT_STAT *sbuf1,
135 const SMB_STRUCT_STAT *sbuf2)
136 {
137 if (sbuf1->st_ex_dev != sbuf2->st_ex_dev ||
138 sbuf1->st_ex_ino != sbuf2->st_ex_ino) {
139 return false;
140 }
141 return true;
142 }
143
144 /****************************************************************************
145 Check if a stat struct is identical for use.
146 ****************************************************************************/
147
148 bool check_same_stat(const SMB_STRUCT_STAT *sbuf1,
149 const SMB_STRUCT_STAT *sbuf2)
150 {
151 if (sbuf1->st_ex_uid != sbuf2->st_ex_uid ||
152 sbuf1->st_ex_gid != sbuf2->st_ex_gid ||
153 !check_same_dev_ino(sbuf1, sbuf2)) {
154 return false;
155 }
156 return true;
157 }
158
159 /*******************************************************************
160 Show a smb message structure.
161 ********************************************************************/
162
163 void show_msg(const char *buf)
164 {
165 int i;
166 int bcc=0;
167
168 if (!DEBUGLVL(5))
169 return;
170
171 DEBUG(5,("size=%d\nsmb_com=0x%x\nsmb_rcls=%d\nsmb_reh=%d\nsmb_err=%d\nsmb_flg=%d\nsmb_flg2=%d\n",
172 smb_len(buf),
173 (int)CVAL(buf,smb_com),
174 (int)CVAL(buf,smb_rcls),
175 (int)CVAL(buf,smb_reh),
176 (int)SVAL(buf,smb_err),
177 (int)CVAL(buf,smb_flg),
178 (int)SVAL(buf,smb_flg2)));
179 DEBUGADD(5,("smb_tid=%d\nsmb_pid=%d\nsmb_uid=%d\nsmb_mid=%d\n",
180 (int)SVAL(buf,smb_tid),
181 (int)SVAL(buf,smb_pid),
182 (int)SVAL(buf,smb_uid),
183 (int)SVAL(buf,smb_mid)));
184 DEBUGADD(5,("smt_wct=%d\n",(int)CVAL(buf,smb_wct)));
185
186 for (i=0;i<(int)CVAL(buf,smb_wct);i++)
187 DEBUGADD(5,("smb_vwv[%2d]=%5d (0x%X)\n",i,
188 SVAL(buf,smb_vwv+2*i),SVAL(buf,smb_vwv+2*i)));
189
190 bcc = (int)SVAL(buf,smb_vwv+2*(CVAL(buf,smb_wct)));
191
192 DEBUGADD(5,("smb_bcc=%d\n",bcc));
193
194 if (DEBUGLEVEL < 10)
195 return;
196
197 if (DEBUGLEVEL < 50)
198 bcc = MIN(bcc, 512);
199
200 dump_data(10, (const uint8 *)smb_buf_const(buf), bcc);
201 }
202
203 /*******************************************************************
204 Setup only the byte count for a smb message.
205 ********************************************************************/
206
207 int set_message_bcc(char *buf,int num_bytes)
208 {
209 int num_words = CVAL(buf,smb_wct);
210 SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes);
211 _smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4);
212 return (smb_size + num_words*2 + num_bytes);
213 }
214
215 /*******************************************************************
216 Add a data blob to the end of a smb_buf, adjusting bcc and smb_len.
217 Return the bytes added
218 ********************************************************************/
219
220 ssize_t message_push_blob(uint8 **outbuf, DATA_BLOB blob)
221 {
222 size_t newlen = smb_len(*outbuf) + 4 + blob.length;
223 uint8 *tmp;
224
225 if (!(tmp = talloc_realloc(NULL, *outbuf, uint8, newlen))) {
226 DEBUG(0, ("talloc failed\n"));
227 return -1;
228 }
229 *outbuf = tmp;
230
231 memcpy(tmp + smb_len(tmp) + 4, blob.data, blob.length);
232 set_message_bcc((char *)tmp, smb_buflen(tmp) + blob.length);
233 return blob.length;
234 }
235
236 /*******************************************************************
237 Reduce a file name, removing .. elements.
238 ********************************************************************/
239
240 static char *dos_clean_name(TALLOC_CTX *ctx, const char *s)
241 {
242 char *p = NULL;
243 char *str = NULL;
244
245 DEBUG(3,("dos_clean_name [%s]\n",s));
246
247 /* remove any double slashes */
248 str = talloc_all_string_sub(ctx, s, "\\\\", "\\");
249 if (!str) {
250 return NULL;
251 }
252
253 /* Remove leading .\\ characters */
254 if(strncmp(str, ".\\", 2) == 0) {
255 trim_string(str, ".\\", NULL);
256 if(*str == 0) {
257 str = talloc_strdup(ctx, ".\\");
258 if (!str) {
259 return NULL;
260 }
261 }
262 }
263
264 while ((p = strstr_m(str,"\\..\\")) != NULL) {
265 char *s1;
266
267 *p = 0;
268 s1 = p+3;
269
270 if ((p=strrchr_m(str,'\\')) != NULL) {
271 *p = 0;
272 } else {
273 *str = 0;
274 }
275 str = talloc_asprintf(ctx,
276 "%s%s",
277 str,
278 s1);
279 if (!str) {
280 return NULL;
281 }
282 }
283
284 trim_string(str,NULL,"\\..");
285 return talloc_all_string_sub(ctx, str, "\\.\\", "\\");
286 }
287
288 /*******************************************************************
289 Reduce a file name, removing .. elements.
290 ********************************************************************/
291
292 char *unix_clean_name(TALLOC_CTX *ctx, const char *s)
293 {
294 char *p = NULL;
295 char *str = NULL;
296
297 DEBUG(3,("unix_clean_name [%s]\n",s));
298
299 /* remove any double slashes */
300 str = talloc_all_string_sub(ctx, s, "//","/");
301 if (!str) {
302 return NULL;
303 }
304
305 /* Remove leading ./ characters */
306 if(strncmp(str, "./", 2) == 0) {
307 trim_string(str, "./", NULL);
308 if(*str == 0) {
309 str = talloc_strdup(ctx, "./");
310 if (!str) {
311 return NULL;
312 }
313 }
314 }
315
316 while ((p = strstr_m(str,"/../")) != NULL) {
317 char *s1;
318
319 *p = 0;
320 s1 = p+3;
321
322 if ((p=strrchr_m(str,'/')) != NULL) {
323 *p = 0;
324 } else {
325 *str = 0;
326 }
327 str = talloc_asprintf(ctx,
328 "%s%s",
329 str,
330 s1);
331 if (!str) {
332 return NULL;
333 }
334 }
335
336 trim_string(str,NULL,"/..");
337 return talloc_all_string_sub(ctx, str, "/./", "/");
338 }
339
340 char *clean_name(TALLOC_CTX *ctx, const char *s)
341 {
342 char *str = dos_clean_name(ctx, s);
343 if (!str) {
344 return NULL;
345 }
346 return unix_clean_name(ctx, str);
347 }
348
349 /*******************************************************************
350 Write data into an fd at a given offset. Ignore seek errors.
351 ********************************************************************/
352
353 ssize_t write_data_at_offset(int fd, const char *buffer, size_t N, off_t pos)
354 {
355 size_t total=0;
356 ssize_t ret;
357
358 if (pos == (off_t)-1) {
359 return write_data(fd, buffer, N);
360 }
361 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
362 while (total < N) {
363 ret = sys_pwrite(fd,buffer + total,N - total, pos);
364 if (ret == -1 && errno == ESPIPE) {
365 return write_data(fd, buffer + total,N - total);
366 }
367 if (ret == -1) {
368 DEBUG(0,("write_data_at_offset: write failure. Error = %s\n", strerror(errno) ));
369 return -1;
370 }
371 if (ret == 0) {
372 return total;
373 }
374 total += ret;
375 pos += ret;
376 }
377 return (ssize_t)total;
378 #else
379 /* Use lseek and write_data. */
380 if (lseek(fd, pos, SEEK_SET) == -1) {
381 if (errno != ESPIPE) {
382 return -1;
383 }
384 }
385 return write_data(fd, buffer, N);
386 #endif
387 }
388
389 static int reinit_after_fork_pipe[2] = { -1, -1 };
390
391 NTSTATUS init_before_fork(void)
392 {
393 int ret;
394
395 ret = pipe(reinit_after_fork_pipe);
396 if (ret == -1) {
397 NTSTATUS status;
398
399 status = map_nt_error_from_unix_common(errno);
400
401 DEBUG(0, ("Error creating child_pipe: %s\n",
402 nt_errstr(status)));
403
404 return status;
405 }
406
407 return NT_STATUS_OK;
408 }
409
410 /**
411 * Detect died parent by detecting EOF on the pipe
412 */
413 static void reinit_after_fork_pipe_handler(struct tevent_context *ev,
414 struct tevent_fd *fde,
415 uint16_t flags,
416 void *private_data)
417 {
418 char c;
419
420 if (sys_read(reinit_after_fork_pipe[0], &c, 1) != 1) {
421 /*
422 * we have reached EOF on stdin, which means the
423 * parent has exited. Shutdown the server
424 */
425 (void)kill(getpid(), SIGTERM);
426 }
427 }
428
429
430 NTSTATUS reinit_after_fork(struct messaging_context *msg_ctx,
431 struct event_context *ev_ctx,
432 bool parent_longlived)
433 {
434 NTSTATUS status = NT_STATUS_OK;
435
436 if (reinit_after_fork_pipe[1] != -1) {
437 close(reinit_after_fork_pipe[1]);
438 reinit_after_fork_pipe[1] = -1;
439 }
440
441 /* Reset the state of the random
442 * number generation system, so
443 * children do not get the same random
444 * numbers as each other */
445 set_need_random_reseed();
446
447 /* tdb needs special fork handling */
448 if (tdb_reopen_all(parent_longlived ? 1 : 0) != 0) {
449 DEBUG(0,("tdb_reopen_all failed.\n"));
450 status = NT_STATUS_OPEN_FAILED;
451 goto done;
452 }
453
454 if (ev_ctx && tevent_re_initialise(ev_ctx) != 0) {
455 smb_panic(__location__ ": Failed to re-initialise event context");
456 }
457
458 if (reinit_after_fork_pipe[0] != -1) {
459 struct tevent_fd *fde;
460
461 fde = tevent_add_fd(ev_ctx, ev_ctx /* TALLOC_CTX */,
462 reinit_after_fork_pipe[0], TEVENT_FD_READ,
463 reinit_after_fork_pipe_handler, NULL);
464 if (fde == NULL) {
465 smb_panic(__location__ ": Failed to add reinit_after_fork pipe event");
466 }
467 }
468
469 if (msg_ctx) {
470 /*
471 * For clustering, we need to re-init our ctdbd connection after the
472 * fork
473 */
474 status = messaging_reinit(msg_ctx);
475 if (!NT_STATUS_IS_OK(status)) {
476 DEBUG(0,("messaging_reinit() failed: %s\n",
477 nt_errstr(status)));
478 }
479 }
480 done:
481 return status;
482 }
483
484 /****************************************************************************
485 (Hopefully) efficient array append.
486 ****************************************************************************/
487
488 void add_to_large_array(TALLOC_CTX *mem_ctx, size_t element_size,
489 void *element, void *_array, uint32 *num_elements,
490 ssize_t *array_size)
491 {
492 void **array = (void **)_array;
493
494 if (*array_size < 0) {
495 return;
496 }
497
498 if (*array == NULL) {
499 if (*array_size == 0) {
500 *array_size = 128;
501 }
502
503 if (*array_size >= MAX_ALLOC_SIZE/element_size) {
504 goto error;
505 }
506
507 *array = TALLOC(mem_ctx, element_size * (*array_size));
508 if (*array == NULL) {
509 goto error;
510 }
511 }
512
513 if (*num_elements == *array_size) {
514 *array_size *= 2;
515
516 if (*array_size >= MAX_ALLOC_SIZE/element_size) {
517 goto error;
518 }
519
520 *array = TALLOC_REALLOC(mem_ctx, *array,
521 element_size * (*array_size));
522
523 if (*array == NULL) {
524 goto error;
525 }
526 }
527
528 memcpy((char *)(*array) + element_size*(*num_elements),
529 element, element_size);
530 *num_elements += 1;
531
532 return;
533
534 error:
535 *num_elements = 0;
536 *array_size = -1;
537 }
538
539 /****************************************************************************
540 Get my own domain name, or "" if we have none.
541 ****************************************************************************/
542
543 char *get_mydnsdomname(TALLOC_CTX *ctx)
544 {
545 const char *domname;
546 char *p;
547
548 domname = get_mydnsfullname();
549 if (!domname) {
550 return NULL;
551 }
552
553 p = strchr_m(domname, '.');
554 if (p) {
555 p++;
556 return talloc_strdup(ctx, p);
557 } else {
558 return talloc_strdup(ctx, "");
559 }
560 }
561
562 /****************************************************************************
563 Interpret a protocol description string, with a default.
564 ****************************************************************************/
565
566 int interpret_protocol(const char *str,int def)
567 {
568 if (strequal(str,"NT1"))
569 return(PROTOCOL_NT1);
570 if (strequal(str,"LANMAN2"))
571 return(PROTOCOL_LANMAN2);
572 if (strequal(str,"LANMAN1"))
573 return(PROTOCOL_LANMAN1);
574 if (strequal(str,"CORE"))
575 return(PROTOCOL_CORE);
576 if (strequal(str,"COREPLUS"))
577 return(PROTOCOL_COREPLUS);
578 if (strequal(str,"CORE+"))
579 return(PROTOCOL_COREPLUS);
580
581 DEBUG(0,("Unrecognised protocol level %s\n",str));
582
583 return(def);
584 }
585
586
587 #if (defined(HAVE_NETGROUP) && defined(WITH_AUTOMOUNT))
588 /******************************************************************
589 Remove any mount options such as -rsize=2048,wsize=2048 etc.
590 Based on a fix from <Thomas.Hepper@icem.de>.
591 Returns a malloc'ed string.
592 *******************************************************************/
593
594 static char *strip_mount_options(TALLOC_CTX *ctx, const char *str)
595 {
596 if (*str == '-') {
597 const char *p = str;
598 while(*p && !isspace(*p))
599 p++;
600 while(*p && isspace(*p))
601 p++;
602 if(*p) {
603 return talloc_strdup(ctx, p);
604 }
605 }
606 return NULL;
607 }
608
609 /*******************************************************************
610 Patch from jkf@soton.ac.uk
611 Split Luke's automount_server into YP lookup and string splitter
612 so can easily implement automount_path().
613 Returns a malloc'ed string.
614 *******************************************************************/
615
616 #ifdef WITH_NISPLUS_HOME
617 char *automount_lookup(TALLOC_CTX *ctx, const char *user_name)
618 {
619 char *value = NULL;
620
621 char *nis_map = (char *)lp_nis_home_map_name();
622
623 char buffer[NIS_MAXATTRVAL + 1];
624 nis_result *result;
625 nis_object *object;
626 entry_obj *entry;
627
628 snprintf(buffer, sizeof(buffer), "[key=%s],%s", user_name, nis_map);
629 DEBUG(5, ("NIS+ querystring: %s\n", buffer));
630
631 if (result = nis_list(buffer, FOLLOW_PATH|EXPAND_NAME|HARD_LOOKUP, NULL, NULL)) {
632 if (result->status != NIS_SUCCESS) {
633 DEBUG(3, ("NIS+ query failed: %s\n", nis_sperrno(result->status)));
634 } else {
635 object = result->objects.objects_val;
636 if (object->zo_data.zo_type == ENTRY_OBJ) {
637 entry = &object->zo_data.objdata_u.en_data;
638 DEBUG(5, ("NIS+ entry type: %s\n", entry->en_type));
639 DEBUG(3, ("NIS+ result: %s\n", entry->en_cols.en_cols_val[1].ec_value.ec_value_val));
640
641 value = talloc_strdup(ctx,
642 entry->en_cols.en_cols_val[1].ec_value.ec_value_val);
643 if (!value) {
644 nis_freeresult(result);
645 return NULL;
646 }
647 value = talloc_string_sub(ctx,
648 value,
649 "&",
650 user_name);
651 }
652 }
653 }
654 nis_freeresult(result);
655
656 if (value) {
657 value = strip_mount_options(ctx, value);
658 DEBUG(4, ("NIS+ Lookup: %s resulted in %s\n",
659 user_name, value));
660 }
661 return value;
662 }
663 #else /* WITH_NISPLUS_HOME */
664
665 char *automount_lookup(TALLOC_CTX *ctx, const char *user_name)
666 {
667 char *value = NULL;
668
669 int nis_error; /* returned by yp all functions */
670 char *nis_result; /* yp_match inits this */
671 int nis_result_len; /* and set this */
672 char *nis_domain; /* yp_get_default_domain inits this */
673 char *nis_map = lp_nis_home_map_name(talloc_tos());
674
675 if ((nis_error = yp_get_default_domain(&nis_domain)) != 0) {
676 DEBUG(3, ("YP Error: %s\n", yperr_string(nis_error)));
677 return NULL;
678 }
679
680 DEBUG(5, ("NIS Domain: %s\n", nis_domain));
681
682 if ((nis_error = yp_match(nis_domain, nis_map, user_name,
683 strlen(user_name), &nis_result,
684 &nis_result_len)) == 0) {
685 if (nis_result_len > 0 && nis_result[nis_result_len] == '\n') {
686 nis_result[nis_result_len] = '\0';
687 }
688 value = talloc_strdup(ctx, nis_result);
689 if (!value) {
690 return NULL;
691 }
692 value = strip_mount_options(ctx, value);
693 } else if(nis_error == YPERR_KEY) {
694 DEBUG(3, ("YP Key not found: while looking up \"%s\" in map \"%s\"\n",
695 user_name, nis_map));
696 DEBUG(3, ("using defaults for server and home directory\n"));
697 } else {
698 DEBUG(3, ("YP Error: \"%s\" while looking up \"%s\" in map \"%s\"\n",
699 yperr_string(nis_error), user_name, nis_map));
700 }
701
702 if (value) {
703 DEBUG(4, ("YP Lookup: %s resulted in %s\n", user_name, value));
704 }
705 return value;
706 }
707 #endif /* WITH_NISPLUS_HOME */
708 #endif
709
710 bool process_exists(const struct server_id pid)
711 {
712 return serverid_exists(&pid);
713 }
714
715 /*******************************************************************
716 Convert a uid into a user name.
717 ********************************************************************/
718
719 const char *uidtoname(uid_t uid)
720 {
721 TALLOC_CTX *ctx = talloc_tos();
722 char *name = NULL;
723 struct passwd *pass = NULL;
724
725 pass = getpwuid_alloc(ctx,uid);
726 if (pass) {
727 name = talloc_strdup(ctx,pass->pw_name);
728 TALLOC_FREE(pass);
729 } else {
730 name = talloc_asprintf(ctx,
731 "%ld",
732 (long int)uid);
733 }
734 return name;
735 }
736
737 /*******************************************************************
738 Convert a gid into a group name.
739 ********************************************************************/
740
741 char *gidtoname(gid_t gid)
742 {
743 struct group *grp;
744
745 grp = getgrgid(gid);
746 if (grp) {
747 return talloc_strdup(talloc_tos(), grp->gr_name);
748 }
749 else {
750 return talloc_asprintf(talloc_tos(),
751 "%d",
752 (int)gid);
753 }
754 }
755
756 /*******************************************************************
757 Convert a user name into a uid.
758 ********************************************************************/
759
760 uid_t nametouid(const char *name)
761 {
762 struct passwd *pass;
763 char *p;
764 uid_t u;
765
766 pass = Get_Pwnam_alloc(talloc_tos(), name);
767 if (pass) {
768 u = pass->pw_uid;
769 TALLOC_FREE(pass);
770 return u;
771 }
772
773 u = (uid_t)strtol(name, &p, 0);
774 if ((p != name) && (*p == '\0'))
775 return u;
776
777 return (uid_t)-1;
778 }
779
780 /*******************************************************************
781 Convert a name to a gid_t if possible. Return -1 if not a group.
782 ********************************************************************/
783
784 gid_t nametogid(const char *name)
785 {
786 struct group *grp;
787 char *p;
788 gid_t g;
789
790 g = (gid_t)strtol(name, &p, 0);
791 if ((p != name) && (*p == '\0'))
792 return g;
793
794 grp = getgrnam(name);
795 if (grp)
796 return(grp->gr_gid);
797 return (gid_t)-1;
798 }
799
800 /*******************************************************************
801 Something really nasty happened - panic !
802 ********************************************************************/
803
804 void smb_panic_s3(const char *why)
805 {
806 char *cmd;
807 int result;
808
809 DEBUG(0,("PANIC (pid %llu): %s\n",
810 (unsigned long long)getpid(), why));
811 log_stack_trace();
812
813 #if defined(HAVE_PRCTL) && defined(PR_SET_PTRACER)
814 /*
815 * Make sure all children can attach a debugger.
816 */
817 prctl(PR_SET_PTRACER, getpid(), 0, 0, 0);
818 #endif
819
820 cmd = lp_panic_action(talloc_tos());
821 if (cmd && *cmd) {
822 DEBUG(0, ("smb_panic(): calling panic action [%s]\n", cmd));
823 result = system(cmd);
824
825 if (result == -1)
826 DEBUG(0, ("smb_panic(): fork failed in panic action: %s\n",
827 strerror(errno)));
828 else
829 DEBUG(0, ("smb_panic(): action returned status %d\n",
830 WEXITSTATUS(result)));
831 }
832
833 dump_core();
834 }
835
836 /*******************************************************************
837 Print a backtrace of the stack to the debug log. This function
838 DELIBERATELY LEAKS MEMORY. The expectation is that you should
839 exit shortly after calling it.
840 ********************************************************************/
841
842 #ifdef HAVE_LIBUNWIND_H
843 #include <libunwind.h>
844 #endif
845
846 #ifdef HAVE_EXECINFO_H
847 #include <execinfo.h>
848 #endif
849
850 #ifdef HAVE_LIBEXC_H
851 #include <libexc.h>
852 #endif
853
854 void log_stack_trace(void)
855 {
856 #ifdef HAVE_LIBUNWIND
857 /* Try to use libunwind before any other technique since on ia64
858 * libunwind correctly walks the stack in more circumstances than
859 * backtrace.
860 */
861 unw_cursor_t cursor;
862 unw_context_t uc;
863 unsigned i = 0;
864
865 char procname[256];
866 unw_word_t ip, sp, off;
867
868 procname[sizeof(procname) - 1] = '\0';
869
870 if (unw_getcontext(&uc) != 0) {
871 goto libunwind_failed;
872 }
873
874 if (unw_init_local(&cursor, &uc) != 0) {
875 goto libunwind_failed;
876 }
877
878 DEBUG(0, ("BACKTRACE:\n"));
879
880 do {
881 ip = sp = 0;
882 unw_get_reg(&cursor, UNW_REG_IP, &ip);
883 unw_get_reg(&cursor, UNW_REG_SP, &sp);
884
885 switch (unw_get_proc_name(&cursor,
886 procname, sizeof(procname) - 1, &off) ) {
887 case 0:
888 /* Name found. */
889 case -UNW_ENOMEM:
890 /* Name truncated. */
891 DEBUGADD(0, (" #%u %s + %#llx [ip=%#llx] [sp=%#llx]\n",
892 i, procname, (long long)off,
893 (long long)ip, (long long) sp));
894 break;
895 default:
896 /* case -UNW_ENOINFO: */
897 /* case -UNW_EUNSPEC: */
898 /* No symbol name found. */
899 DEBUGADD(0, (" #%u %s [ip=%#llx] [sp=%#llx]\n",
900 i, "<unknown symbol>",
901 (long long)ip, (long long) sp));
902 }
903 ++i;
904 } while (unw_step(&cursor) > 0);
905
906 return;
907
908 libunwind_failed:
909 DEBUG(0, ("unable to produce a stack trace with libunwind\n"));
910
911 #elif HAVE_BACKTRACE_SYMBOLS
912 void *backtrace_stack[BACKTRACE_STACK_SIZE];
913 size_t backtrace_size;
914 char **backtrace_strings;
915
916 /* get the backtrace (stack frames) */
917 backtrace_size = backtrace(backtrace_stack,BACKTRACE_STACK_SIZE);
918 backtrace_strings = backtrace_symbols(backtrace_stack, backtrace_size);
919
920 DEBUG(0, ("BACKTRACE: %lu stack frames:\n",
921 (unsigned long)backtrace_size));
922
923 if (backtrace_strings) {
924 int i;
925
926 for (i = 0; i < backtrace_size; i++)
927 DEBUGADD(0, (" #%u %s\n", i, backtrace_strings[i]));
928
929 /* Leak the backtrace_strings, rather than risk what free() might do */
930 }
931
932 #elif HAVE_LIBEXC
933
934 /* The IRIX libexc library provides an API for unwinding the stack. See
935 * libexc(3) for details. Apparantly trace_back_stack leaks memory, but
936 * since we are about to abort anyway, it hardly matters.
937 */
938
939 #define NAMESIZE 32 /* Arbitrary */
940
941 __uint64_t addrs[BACKTRACE_STACK_SIZE];
942 char * names[BACKTRACE_STACK_SIZE];
943 char namebuf[BACKTRACE_STACK_SIZE * NAMESIZE];
944
945 int i;
946 int levels;
947
948 ZERO_ARRAY(addrs);
949 ZERO_ARRAY(names);
950 ZERO_ARRAY(namebuf);
951
952 /* We need to be root so we can open our /proc entry to walk
953 * our stack. It also helps when we want to dump core.
954 */
955 become_root();
956
957 for (i = 0; i < BACKTRACE_STACK_SIZE; i++) {
958 names[i] = namebuf + (i * NAMESIZE);
959 }
960
961 levels = trace_back_stack(0, addrs, names,
962 BACKTRACE_STACK_SIZE, NAMESIZE - 1);
963
964 DEBUG(0, ("BACKTRACE: %d stack frames:\n", levels));
965 for (i = 0; i < levels; i++) {
966 DEBUGADD(0, (" #%d 0x%llx %s\n", i, addrs[i], names[i]));
967 }
968 #undef NAMESIZE
969
970 #else
971 DEBUG(0, ("unable to produce a stack trace on this platform\n"));
972 #endif
973 }
974
975 /*******************************************************************
976 A readdir wrapper which just returns the file name.
977 ********************************************************************/
978
979 const char *readdirname(DIR *p)
980 {
981 struct dirent *ptr;
982 char *dname;
983
984 if (!p)
985 return(NULL);
986
987 ptr = (struct dirent *)readdir(p);
988 if (!ptr)
989 return(NULL);
990
991 dname = ptr->d_name;
992
993 #ifdef NEXT2
994 if (telldir(p) < 0)
995 return(NULL);
996 #endif
997
998 #ifdef HAVE_BROKEN_READDIR_NAME
999 /* using /usr/ucb/cc is BAD */
1000 dname = dname - 2;
1001 #endif
1002
1003 return talloc_strdup(talloc_tos(), dname);
1004 }
1005
1006 /*******************************************************************
1007 Utility function used to decide if the last component
1008 of a path matches a (possibly wildcarded) entry in a namelist.
1009 ********************************************************************/
1010
1011 bool is_in_path(const char *name, name_compare_entry *namelist, bool case_sensitive)
1012 {
1013 const char *last_component;
1014
1015 /* if we have no list it's obviously not in the path */
1016 if((namelist == NULL ) || ((namelist != NULL) && (namelist[0].name == NULL))) {
1017 return False;
1018 }
1019
1020 DEBUG(8, ("is_in_path: %s\n", name));
1021
1022 /* Get the last component of the unix name. */
1023 last_component = strrchr_m(name, '/');
1024 if (!last_component) {
1025 last_component = name;
1026 } else {
1027 last_component++; /* Go past '/' */
1028 }
1029
1030 for(; namelist->name != NULL; namelist++) {
1031 if(namelist->is_wild) {
1032 if (mask_match(last_component, namelist->name, case_sensitive)) {
1033 DEBUG(8,("is_in_path: mask match succeeded\n"));
1034 return True;
1035 }
1036 } else {
1037 if((case_sensitive && (strcmp(last_component, namelist->name) == 0))||
1038 (!case_sensitive && (strcasecmp_m(last_component, namelist->name) == 0))) {
1039 DEBUG(8,("is_in_path: match succeeded\n"));
1040 return True;
1041 }
1042 }
1043 }
1044 DEBUG(8,("is_in_path: match not found\n"));
1045 return False;
1046 }
1047
1048 /*******************************************************************
1049 Strip a '/' separated list into an array of
1050 name_compare_enties structures suitable for
1051 passing to is_in_path(). We do this for
1052 speed so we can pre-parse all the names in the list
1053 and don't do it for each call to is_in_path().
1054 We also check if the entry contains a wildcard to
1055 remove a potentially expensive call to mask_match
1056 if possible.
1057 ********************************************************************/
1058
1059 void set_namearray(name_compare_entry **ppname_array, const char *namelist_in)
1060 {
1061 char *name_end;
1062 char *namelist;
1063 char *namelist_end;
1064 char *nameptr;
1065 int num_entries = 0;
1066 int i;
1067
1068 (*ppname_array) = NULL;
1069
1070 if((namelist_in == NULL ) || ((namelist_in != NULL) && (*namelist_in == '\0')))
1071 return;
1072
1073 namelist = talloc_strdup(talloc_tos(), namelist_in);
1074 if (namelist == NULL) {
1075 DEBUG(0,("set_namearray: talloc fail\n"));
1076 return;
1077 }
1078 nameptr = namelist;
1079
1080 namelist_end = &namelist[strlen(namelist)];
1081
1082 /* We need to make two passes over the string. The
1083 first to count the number of elements, the second
1084 to split it.
1085 */
1086
1087 while(nameptr <= namelist_end) {
1088 if ( *nameptr == '/' ) {
1089 /* cope with multiple (useless) /s) */
1090 nameptr++;
1091 continue;
1092 }
1093 /* anything left? */
1094 if ( *nameptr == '\0' )
1095 break;
1096
1097 /* find the next '/' or consume remaining */
1098 name_end = strchr_m(nameptr, '/');
1099 if (name_end == NULL) {
1100 /* Point nameptr at the terminating '\0' */
1101 nameptr += strlen(nameptr);
1102 } else {
1103 /* next segment please */
1104 nameptr = name_end + 1;
1105 }
1106 num_entries++;
1107 }
1108
1109 if(num_entries == 0) {
1110 talloc_free(namelist);
1111 return;
1112 }
1113
1114 if(( (*ppname_array) = SMB_MALLOC_ARRAY(name_compare_entry, num_entries + 1)) == NULL) {
1115 DEBUG(0,("set_namearray: malloc fail\n"));
1116 talloc_free(namelist);
1117 return;
1118 }
1119
1120 /* Now copy out the names */
1121 nameptr = namelist;
1122 i = 0;
1123 while(nameptr <= namelist_end) {
1124 if ( *nameptr == '/' ) {
1125 /* cope with multiple (useless) /s) */
1126 nameptr++;
1127 continue;
1128 }
1129 /* anything left? */
1130 if ( *nameptr == '\0' )
1131 break;
1132
1133 /* find the next '/' or consume remaining */
1134 name_end = strchr_m(nameptr, '/');
1135 if (name_end != NULL) {
1136 *name_end = '\0';
1137 }
1138
1139 (*ppname_array)[i].is_wild = ms_has_wild(nameptr);
1140 if(((*ppname_array)[i].name = SMB_STRDUP(nameptr)) == NULL) {
1141 DEBUG(0,("set_namearray: malloc fail (1)\n"));
1142 talloc_free(namelist);
1143 return;
1144 }
1145
1146 if (name_end == NULL) {
1147 /* Point nameptr at the terminating '\0' */
1148 nameptr += strlen(nameptr);
1149 } else {
1150 /* next segment please */
1151 nameptr = name_end + 1;
1152 }
1153 i++;
1154 }
1155
1156 (*ppname_array)[i].name = NULL;
1157
1158 talloc_free(namelist);
1159 return;
1160 }
1161
1162 #undef DBGC_CLASS
1163 #define DBGC_CLASS DBGC_LOCKING
1164
1165 /****************************************************************************
1166 Simple routine to query existing file locks. Cruft in NFS and 64->32 bit mapping
1167 is dealt with in posix.c
1168 Returns True if we have information regarding this lock region (and returns
1169 F_UNLCK in *ptype if the region is unlocked). False if the call failed.
1170 ****************************************************************************/
1171
1172 bool fcntl_getlock(int fd, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid)
1173 {
1174 struct flock lock;
1175 int ret;
1176
1177 DEBUG(8,("fcntl_getlock fd=%d offset=%.0f count=%.0f type=%d\n",
1178 fd,(double)*poffset,(double)*pcount,*ptype));
1179
1180 lock.l_type = *ptype;
1181 lock.l_whence = SEEK_SET;
1182 lock.l_start = *poffset;
1183 lock.l_len = *pcount;
1184 lock.l_pid = 0;
1185
1186 ret = sys_fcntl_ptr(fd,F_GETLK,&lock);
1187
1188 if (ret == -1) {
1189 int sav = errno;
1190 DEBUG(3,("fcntl_getlock: lock request failed at offset %.0f count %.0f type %d (%s)\n",
1191 (double)*poffset,(double)*pcount,*ptype,strerror(errno)));
1192 errno = sav;
1193 return False;
1194 }
1195
1196 *ptype = lock.l_type;
1197 *poffset = lock.l_start;
1198 *pcount = lock.l_len;
1199 *ppid = lock.l_pid;
1200
1201 DEBUG(3,("fcntl_getlock: fd %d is returned info %d pid %u\n",
1202 fd, (int)lock.l_type, (unsigned int)lock.l_pid));
1203 return True;
1204 }
1205
1206 #undef DBGC_CLASS
1207 #define DBGC_CLASS DBGC_ALL
1208
1209 /*******************************************************************
1210 Is the name specified one of my netbios names.
1211 Returns true if it is equal, false otherwise.
1212 ********************************************************************/
1213
1214 bool is_myname(const char *s)
1215 {
1216 int n;
1217 bool ret = False;
1218
1219 for (n=0; my_netbios_names(n); n++) {
1220 if (strequal(my_netbios_names(n), s)) {
1221 ret=True;
1222 break;
1223 }
1224 }
1225 DEBUG(8, ("is_myname(\"%s\") returns %d\n", s, ret));
1226 return(ret);
1227 }
1228
1229 /*******************************************************************
1230 we distinguish between 2K and XP by the "Native Lan Manager" string
1231 WinXP => "Windows 2002 5.1"
1232 WinXP 64bit => "Windows XP 5.2"
1233 Win2k => "Windows 2000 5.0"
1234 NT4 => "Windows NT 4.0"
1235 Win9x => "Windows 4.0"
1236 Windows 2003 doesn't set the native lan manager string but
1237 they do set the domain to "Windows 2003 5.2" (probably a bug).
1238 ********************************************************************/
1239
1240 void ra_lanman_string( const char *native_lanman )
1241 {
1242 if ( strcmp( native_lanman, "Windows 2002 5.1" ) == 0 )
1243 set_remote_arch( RA_WINXP );
1244 else if ( strcmp( native_lanman, "Windows XP 5.2" ) == 0 )
1245 set_remote_arch( RA_WINXP64 );
1246 else if ( strcmp( native_lanman, "Windows Server 2003 5.2" ) == 0 )
1247 set_remote_arch( RA_WIN2K3 );
1248 }
1249
1250 static const char *remote_arch_str;
1251
1252 const char *get_remote_arch_str(void)
1253 {
1254 if (!remote_arch_str) {
1255 return "UNKNOWN";
1256 }
1257 return remote_arch_str;
1258 }
1259
1260 /*******************************************************************
1261 Set the horrid remote_arch string based on an enum.
1262 ********************************************************************/
1263
1264 void set_remote_arch(enum remote_arch_types type)
1265 {
1266 ra_type = type;
1267 switch( type ) {
1268 case RA_WFWG:
1269 remote_arch_str = "WfWg";
1270 break;
1271 case RA_OS2:
1272 remote_arch_str = "OS2";
1273 break;
1274 case RA_WIN95:
1275 remote_arch_str = "Win95";
1276 break;
1277 case RA_WINNT:
1278 remote_arch_str = "WinNT";
1279 break;
1280 case RA_WIN2K:
1281 remote_arch_str = "Win2K";
1282 break;
1283 case RA_WINXP:
1284 remote_arch_str = "WinXP";
1285 break;
1286 case RA_WINXP64:
1287 remote_arch_str = "WinXP64";
1288 break;
1289 case RA_WIN2K3:
1290 remote_arch_str = "Win2K3";
1291 break;
1292 case RA_VISTA:
1293 remote_arch_str = "Vista";
1294 break;
1295 case RA_SAMBA:
1296 remote_arch_str = "Samba";
1297 break;
1298 case RA_CIFSFS:
1299 remote_arch_str = "CIFSFS";
1300 break;
1301 case RA_OSX:
1302 remote_arch_str = "OSX";
1303 break;
1304 default:
1305 ra_type = RA_UNKNOWN;
1306 remote_arch_str = "UNKNOWN";
1307 break;
1308 }
1309
1310 DEBUG(10,("set_remote_arch: Client arch is \'%s\'\n",
1311 remote_arch_str));
1312 }
1313
1314 /*******************************************************************
1315 Get the remote_arch type.
1316 ********************************************************************/
1317
1318 enum remote_arch_types get_remote_arch(void)
1319 {
1320 return ra_type;
1321 }
1322
1323 const char *tab_depth(int level, int depth)
1324 {
1325 if( CHECK_DEBUGLVL(level) ) {
1326 dbgtext("%*s", depth*4, "");
1327 }
1328 return "";
1329 }
1330
1331 /*****************************************************************************
1332 Provide a checksum on a string
1333
1334 Input: s - the null-terminated character string for which the checksum
1335 will be calculated.
1336
1337 Output: The checksum value calculated for s.
1338 *****************************************************************************/
1339
1340 int str_checksum(const char *s)
1341 {
1342 if (s == NULL)
1343 return 0;
1344 return hash(s, strlen(s), 0);
1345 }
1346
1347 /*****************************************************************
1348 Zero a memory area then free it. Used to catch bugs faster.
1349 *****************************************************************/
1350
1351 void zero_free(void *p, size_t size)
1352 {
1353 memset(p, 0, size);
1354 SAFE_FREE(p);
1355 }
1356
1357 /*****************************************************************
1358 Set our open file limit to a requested max and return the limit.
1359 *****************************************************************/
1360
1361 int set_maxfiles(int requested_max)
1362 {
1363 #if (defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE))
1364 struct rlimit rlp;
1365 int saved_current_limit;
1366
1367 if(getrlimit(RLIMIT_NOFILE, &rlp)) {
1368 DEBUG(0,("set_maxfiles: getrlimit (1) for RLIMIT_NOFILE failed with error %s\n",
1369 strerror(errno) ));
1370 /* just guess... */
1371 return requested_max;
1372 }
1373
1374 /*
1375 * Set the fd limit to be real_max_open_files + MAX_OPEN_FUDGEFACTOR to
1376 * account for the extra fd we need
1377 * as well as the log files and standard
1378 * handles etc. Save the limit we want to set in case
1379 * we are running on an OS that doesn't support this limit (AIX)
1380 * which always returns RLIM_INFINITY for rlp.rlim_max.
1381 */
1382
1383 /* Try raising the hard (max) limit to the requested amount. */
1384
1385 #if defined(RLIM_INFINITY)
1386 if (rlp.rlim_max != RLIM_INFINITY) {
1387 int orig_max = rlp.rlim_max;
1388
1389 if ( rlp.rlim_max < requested_max )
1390 rlp.rlim_max = requested_max;
1391
1392 /* This failing is not an error - many systems (Linux) don't
1393 support our default request of 10,000 open files. JRA. */
1394
1395 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
1396 DEBUG(3,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d max files failed with error %s\n",
1397 (int)rlp.rlim_max, strerror(errno) ));
1398
1399 /* Set failed - restore original value from get. */
1400 rlp.rlim_max = orig_max;
1401 }
1402 }
1403 #endif
1404
1405 /* Now try setting the soft (current) limit. */
1406
1407 saved_current_limit = rlp.rlim_cur = MIN(requested_max,rlp.rlim_max);
1408
1409 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
1410 DEBUG(0,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d files failed with error %s\n",
1411 (int)rlp.rlim_cur, strerror(errno) ));
1412 /* just guess... */
1413 return saved_current_limit;
1414 }
1415
1416 if(getrlimit(RLIMIT_NOFILE, &rlp)) {
1417 DEBUG(0,("set_maxfiles: getrlimit (2) for RLIMIT_NOFILE failed with error %s\n",
1418 strerror(errno) ));
1419 /* just guess... */
1420 return saved_current_limit;
1421 }
1422
1423 #if defined(RLIM_INFINITY)
1424 if(rlp.rlim_cur == RLIM_INFINITY)
1425 return saved_current_limit;
1426 #endif
1427
1428 if((int)rlp.rlim_cur > saved_current_limit)
1429 return saved_current_limit;
1430
1431 return rlp.rlim_cur;
1432 #else /* !defined(HAVE_GETRLIMIT) || !defined(RLIMIT_NOFILE) */
1433 /*
1434 * No way to know - just guess...
1435 */
1436 return requested_max;
1437 #endif
1438 }
1439
1440 /*****************************************************************
1441 malloc that aborts with smb_panic on fail or zero size.
1442 *****************************************************************/
1443
1444 void *smb_xmalloc_array(size_t size, unsigned int count)
1445 {
1446 void *p;
1447 if (size == 0) {
1448 smb_panic("smb_xmalloc_array: called with zero size");
1449 }
1450 if (count >= MAX_ALLOC_SIZE/size) {
1451 smb_panic("smb_xmalloc_array: alloc size too large");
1452 }
1453 if ((p = SMB_MALLOC(size*count)) == NULL) {
1454 DEBUG(0, ("smb_xmalloc_array failed to allocate %lu * %lu bytes\n",
1455 (unsigned long)size, (unsigned long)count));
1456 smb_panic("smb_xmalloc_array: malloc failed");
1457 }
1458 return p;
1459 }
1460
1461 /*
1462 vasprintf that aborts on malloc fail
1463 */
1464
1465 int smb_xvasprintf(char **ptr, const char *format, va_list ap)
1466 {
1467 int n;
1468 va_list ap2;
1469
1470 va_copy(ap2, ap);
1471
1472 n = vasprintf(ptr, format, ap2);
1473 va_end(ap2);
1474 if (n == -1 || ! *ptr) {
1475 smb_panic("smb_xvasprintf: out of memory");
1476 }
1477 return n;
1478 }
1479
1480 /*****************************************************************
1481 Get local hostname and cache result.
1482 *****************************************************************/
1483
1484 char *myhostname(void)
1485 {
1486 static char *ret;
1487 if (ret == NULL) {
1488 ret = get_myname(NULL);
1489 }
1490 return ret;
1491 }
1492
1493 /*****************************************************************
1494 Get local hostname and cache result.
1495 *****************************************************************/
1496
1497 char *myhostname_upper(void)
1498 {
1499 static char *ret;
1500 if (ret == NULL) {
1501 char *name = get_myname(NULL);
1502 if (name == NULL) {
1503 return NULL;
1504 }
1505 ret = strupper_talloc(NULL, name);
1506 talloc_free(name);
1507 }
1508 return ret;
1509 }
1510
1511 /**
1512 * @brief Returns an absolute path to a file concatenating the provided
1513 * @a rootpath and @a basename
1514 *
1515 * @param name Filename, relative to @a rootpath
1516 *
1517 * @retval Pointer to a string containing the full path.
1518 **/
1519
1520 static char *xx_path(const char *name, const char *rootpath)
1521 {
1522 char *fname = NULL;
1523
1524 fname = talloc_strdup(talloc_tos(), rootpath);
1525 if (!fname) {
1526 return NULL;
1527 }
1528 trim_string(fname,"","/");
1529
1530 if (!directory_exist(fname)) {
1531 if (!mkdir(fname,0755))
1532 DEBUG(1, ("Unable to create directory %s for file %s. "
1533 "Error was %s\n", fname, name, strerror(errno)));
1534 }
1535
1536 return talloc_asprintf(talloc_tos(),
1537 "%s/%s",
1538 fname,
1539 name);
1540 }
1541
1542 /**
1543 * @brief Returns an absolute path to a file in the Samba lock directory.
1544 *
1545 * @param name File to find, relative to LOCKDIR.
1546 *
1547 * @retval Pointer to a talloc'ed string containing the full path.
1548 **/
1549
1550 char *lock_path(const char *name)
1551 {
1552 return xx_path(name, lp_lockdir());
1553 }
1554
1555 /**
1556 * @brief Returns an absolute path to a file in the Samba state directory.
1557 *
1558 * @param name File to find, relative to STATEDIR.
1559 *
1560 * @retval Pointer to a talloc'ed string containing the full path.
1561 **/
1562
1563 char *state_path(const char *name)
1564 {
1565 return xx_path(name, lp_statedir());
1566 }
1567
1568 /**
1569 * @brief Returns an absolute path to a file in the Samba cache directory.
1570 *
1571 * @param name File to find, relative to CACHEDIR.
1572 *
1573 * @retval Pointer to a talloc'ed string containing the full path.
1574 **/
1575
1576 char *cache_path(const char *name)
1577 {
1578 return xx_path(name, lp_cachedir());
1579 }
1580
1581 /*******************************************************************
1582 Given a filename - get its directory name
1583 ********************************************************************/
1584
1585 bool parent_dirname(TALLOC_CTX *mem_ctx, const char *dir, char **parent,
1586 const char **name)
1587 {
1588 char *p;
1589 ptrdiff_t len;
1590
1591 p = strrchr_m(dir, '/'); /* Find final '/', if any */
1592
1593 if (p == NULL) {
1594 if (!(*parent = talloc_strdup(mem_ctx, "."))) {
1595 return False;
1596 }
1597 if (name) {
1598 *name = dir;
1599 }
1600 return True;
1601 }
1602
1603 len = p-dir;
1604
1605 if (!(*parent = (char *)talloc_memdup(mem_ctx, dir, len+1))) {
1606 return False;
1607 }
1608 (*parent)[len] = '\0';
1609
1610 if (name) {
1611 *name = p+1;
1612 }
1613 return True;
1614 }
1615
1616 /*******************************************************************
1617 Determine if a pattern contains any Microsoft wildcard characters.
1618 *******************************************************************/
1619
1620 bool ms_has_wild(const char *s)
1621 {
1622 char c;
1623
1624 if (lp_posix_pathnames()) {
1625 /* With posix pathnames no characters are wild. */
1626 return False;
1627 }
1628
1629 while ((c = *s++)) {
1630 switch (c) {
1631 case '*':
1632 case '?':
1633 case '<':
1634 case '>':
1635 case '"':
1636 return True;
1637 }
1638 }
1639 return False;
1640 }
1641
1642 bool ms_has_wild_w(const smb_ucs2_t *s)
1643 {
1644 smb_ucs2_t c;
1645 if (!s) return False;
1646 while ((c = *s++)) {
1647 switch (c) {
1648 case UCS2_CHAR('*'):
1649 case UCS2_CHAR('?'):
1650 case UCS2_CHAR('<'):
1651 case UCS2_CHAR('>'):
1652 case UCS2_CHAR('"'):
1653 return True;
1654 }
1655 }
1656 return False;
1657 }
1658
1659 /*******************************************************************
1660 A wrapper that handles case sensitivity and the special handling
1661 of the ".." name.
1662 *******************************************************************/
1663
1664 bool mask_match(const char *string, const char *pattern, bool is_case_sensitive)
1665 {
1666 if (ISDOTDOT(string))
1667 string = ".";
1668 if (ISDOT(pattern))
1669 return False;
1670
1671 return ms_fnmatch(pattern, string, Protocol <= PROTOCOL_LANMAN2, is_case_sensitive) == 0;
1672 }
1673
1674 /*******************************************************************
1675 A wrapper that handles case sensitivity and the special handling
1676 of the ".." name. Varient that is only called by old search code which requires
1677 pattern translation.
1678 *******************************************************************/
1679
1680 bool mask_match_search(const char *string, const char *pattern, bool is_case_sensitive)
1681 {
1682 if (ISDOTDOT(string))
1683 string = ".";
1684 if (ISDOT(pattern))
1685 return False;
1686
1687 return ms_fnmatch(pattern, string, True, is_case_sensitive) == 0;
1688 }
1689
1690 /*******************************************************************
1691 A wrapper that handles a list of patters and calls mask_match()
1692 on each. Returns True if any of the patterns match.
1693 *******************************************************************/
1694
1695 bool mask_match_list(const char *string, char **list, int listLen, bool is_case_sensitive)
1696 {
1697 while (listLen-- > 0) {
1698 if (mask_match(string, *list++, is_case_sensitive))
1699 return True;
1700 }
1701 return False;
1702 }
1703
1704 /*********************************************************
1705 Recursive routine that is called by unix_wild_match.
1706 *********************************************************/
1707
1708 static bool unix_do_match(const char *regexp, const char *str)
1709 {
1710 const char *p;
1711
1712 for( p = regexp; *p && *str; ) {
1713
1714 switch(*p) {
1715 case '?':
1716 str++;
1717 p++;
1718 break;
1719
1720 case '*':
1721
1722 /*
1723 * Look for a character matching
1724 * the one after the '*'.
1725 */
1726 p++;
1727 if(!*p)
1728 return true; /* Automatic match */
1729 while(*str) {
1730
1731 while(*str && (*p != *str))
1732 str++;
1733
1734 /*
1735 * Patch from weidel@multichart.de. In the case of the regexp
1736 * '*XX*' we want to ensure there are at least 2 'X' characters
1737 * in the string after the '*' for a match to be made.
1738 */
1739
1740 {
1741 int matchcount=0;
1742
1743 /*
1744 * Eat all the characters that match, but count how many there were.
1745 */
1746
1747 while(*str && (*p == *str)) {
1748 str++;
1749 matchcount++;
1750 }
1751
1752 /*
1753 * Now check that if the regexp had n identical characters that
1754 * matchcount had at least that many matches.
1755 */
1756
1757 while ( *(p+1) && (*(p+1) == *p)) {
1758 p++;
1759 matchcount--;
1760 }
1761
1762 if ( matchcount <= 0 )
1763 return false;
1764 }
1765
1766 str--; /* We've eaten the match char after the '*' */
1767
1768 if(unix_do_match(p, str))
1769 return true;
1770
1771 if(!*str)
1772 return false;
1773 else
1774 str++;
1775 }
1776 return false;
1777
1778 default:
1779 if(*str != *p)
1780 return false;
1781 str++;
1782 p++;
1783 break;
1784 }
1785 }
1786
1787 if(!*p && !*str)
1788 return true;
1789
1790 if (!*p && str[0] == '.' && str[1] == 0)
1791 return true;
1792
1793 if (!*str && *p == '?') {
1794 while (*p == '?')
1795 p++;
1796 return(!*p);
1797 }
1798
1799 if(!*str && (*p == '*' && p[1] == '\0'))
1800 return true;
1801
1802 return false;
1803 }
1804
1805 /*******************************************************************
1806 Simple case insensitive interface to a UNIX wildcard matcher.
1807 Returns True if match, False if not.
1808 *******************************************************************/
1809
1810 bool unix_wild_match(const char *pattern, const char *string)
1811 {
1812 TALLOC_CTX *ctx = talloc_stackframe();
1813 char *p2;
1814 char *s2;
1815 char *p;
1816 bool ret = false;
1817
1818 p2 = talloc_strdup(ctx,pattern);
1819 s2 = talloc_strdup(ctx,string);
1820 if (!p2 || !s2) {
1821 TALLOC_FREE(ctx);
1822 return false;
1823 }
1824 if (!strlower_m(p2)) {
1825 TALLOC_FREE(ctx);
1826 return false;
1827 }
1828 if (!strlower_m(s2)) {
1829 TALLOC_FREE(ctx);
1830 return false;
1831 }
1832
1833 /* Remove any *? and ** from the pattern as they are meaningless */
1834 for(p = p2; *p; p++) {
1835 while( *p == '*' && (p[1] == '?' ||p[1] == '*')) {
1836 memmove(&p[1], &p[2], strlen(&p[2])+1);
1837 }
1838 }
1839
1840 if (strequal(p2,"*")) {
1841 TALLOC_FREE(ctx);
1842 return true;
1843 }
1844
1845 ret = unix_do_match(p2, s2);
1846 TALLOC_FREE(ctx);
1847 return ret;
1848 }
1849
1850 /**********************************************************************
1851 Converts a name to a fully qualified domain name.
1852 Returns true if lookup succeeded, false if not (then fqdn is set to name)
1853 Note we deliberately use gethostbyname here, not getaddrinfo as we want
1854 to examine the h_aliases and I don't know how to do that with getaddrinfo.
1855 ***********************************************************************/
1856
1857 bool name_to_fqdn(fstring fqdn, const char *name)
1858 {
1859 char *full = NULL;
1860 struct hostent *hp = gethostbyname(name);
1861
1862 if (!hp || !hp->h_name || !*hp->h_name) {
1863 DEBUG(10,("name_to_fqdn: lookup for %s failed.\n", name));
1864 fstrcpy(fqdn, name);
1865 return false;
1866 }
1867
1868 /* Find out if the fqdn is returned as an alias
1869 * to cope with /etc/hosts files where the first
1870 * name is not the fqdn but the short name */
1871 if (hp->h_aliases && (! strchr_m(hp->h_name, '.'))) {
1872 int i;
1873 for (i = 0; hp->h_aliases[i]; i++) {
1874 if (strchr_m(hp->h_aliases[i], '.')) {
1875 full = hp->h_aliases[i];
1876 break;
1877 }
1878 }
1879 }
1880 if (full && (strcasecmp_m(full, "localhost.localdomain") == 0)) {
1881 DEBUG(1, ("WARNING: your /etc/hosts file may be broken!\n"));
1882 DEBUGADD(1, (" Specifing the machine hostname for address 127.0.0.1 may lead\n"));
1883 DEBUGADD(1, (" to Kerberos authentication problems as localhost.localdomain\n"));
1884 DEBUGADD(1, (" may end up being used instead of the real machine FQDN.\n"));
1885 full = hp->h_name;
1886 }
1887 if (!full) {
1888 full = hp->h_name;
1889 }
1890
1891 DEBUG(10,("name_to_fqdn: lookup for %s -> %s.\n", name, full));
1892 fstrcpy(fqdn, full);
1893 return true;
1894 }
1895
1896 /**********************************************************************
1897 Append a DATA_BLOB to a talloc'ed object
1898 ***********************************************************************/
1899
1900 void *talloc_append_blob(TALLOC_CTX *mem_ctx, void *buf, DATA_BLOB blob)
1901 {
1902 size_t old_size = 0;
1903 char *result;
1904
1905 if (blob.length == 0) {
1906 return buf;
1907 }
1908
1909 if (buf != NULL) {
1910 old_size = talloc_get_size(buf);
1911 }
1912
1913 result = (char *)TALLOC_REALLOC(mem_ctx, buf, old_size + blob.length);
1914 if (result == NULL) {
1915 return NULL;
1916 }
1917
1918 memcpy(result + old_size, blob.data, blob.length);
1919 return result;
1920 }
1921
1922 uint32 map_share_mode_to_deny_mode(uint32 share_access, uint32 private_options)
1923 {
1924 switch (share_access & ~FILE_SHARE_DELETE) {
1925 case FILE_SHARE_NONE:
1926 return DENY_ALL;
1927 case FILE_SHARE_READ:
1928 return DENY_WRITE;
1929 case FILE_SHARE_WRITE:
1930 return DENY_READ;
1931 case FILE_SHARE_READ|FILE_SHARE_WRITE:
1932 return DENY_NONE;
1933 }
1934 if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) {
1935 return DENY_DOS;
1936 } else if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_FCB) {
1937 return DENY_FCB;
1938 }
1939
1940 return (uint32)-1;
1941 }
1942
1943 pid_t procid_to_pid(const struct server_id *proc)
1944 {
1945 return proc->pid;
1946 }
1947
1948 static uint32 my_vnn = NONCLUSTER_VNN;
1949
1950 void set_my_vnn(uint32 vnn)
1951 {
1952 DEBUG(10, ("vnn pid %d = %u\n", (int)getpid(), (unsigned int)vnn));
1953 my_vnn = vnn;
1954 }
1955
1956 uint32 get_my_vnn(void)
1957 {
1958 return my_vnn;
1959 }
1960
1961 static uint64_t my_unique_id = 0;
1962
1963 void set_my_unique_id(uint64_t unique_id)
1964 {
1965 my_unique_id = unique_id;
1966 }
1967
1968 struct server_id pid_to_procid(pid_t pid)
1969 {
1970 struct server_id result;
1971 result.pid = pid;
1972 result.task_id = 0;
1973 result.unique_id = my_unique_id;
1974 result.vnn = my_vnn;
1975 return result;
1976 }
1977
1978 struct server_id procid_self(void)
1979 {
1980 return pid_to_procid(getpid());
1981 }
1982
1983 static struct idr_context *task_id_tree;
1984
1985 static int free_task_id(struct server_id *server_id)
1986 {
1987 idr_remove(task_id_tree, server_id->task_id);
1988 return 0;
1989 }
1990
1991 /* Return a server_id with a unique task_id element. Free the
1992 * returned pointer to de-allocate the task_id via a talloc destructor
1993 * (ie, use talloc_free()) */
1994 struct server_id *new_server_id_task(TALLOC_CTX *mem_ctx)
1995 {
1996 struct server_id *server_id;
1997 int task_id;
1998 if (!task_id_tree) {
1999 task_id_tree = idr_init(NULL);
2000 if (!task_id_tree) {
2001 return NULL;
2002 }
2003 }
2004
2005 server_id = talloc(mem_ctx, struct server_id);
2006
2007 if (!server_id) {
2008 return NULL;
2009 }
2010 *server_id = procid_self();
2011
2012 /* 0 is the default server_id, so we need to start with 1 */
2013 task_id = idr_get_new_above(task_id_tree, server_id, 1, INT32_MAX);
2014
2015 if (task_id == -1) {
2016 talloc_free(server_id);
2017 return NULL;
2018 }
2019
2020 talloc_set_destructor(server_id, free_task_id);
2021 server_id->task_id = task_id;
2022 return server_id;
2023 }
2024
2025 bool procid_is_me(const struct server_id *pid)
2026 {
2027 if (pid->pid != getpid())
2028 return False;
2029 if (pid->task_id != 0)
2030 return False;
2031 if (pid->vnn != my_vnn)
2032 return False;
2033 return True;
2034 }
2035
2036 struct server_id interpret_pid(const char *pid_string)
2037 {
2038 return server_id_from_string(get_my_vnn(), pid_string);
2039 }
2040
2041 char *procid_str_static(const struct server_id *pid)
2042 {
2043 return server_id_str(talloc_tos(), pid);
2044 }
2045
2046 bool procid_valid(const struct server_id *pid)
2047 {
2048 return (pid->pid != (uint64_t)-1);
2049 }
2050
2051 bool procid_is_local(const struct server_id *pid)
2052 {
2053 return pid->vnn == my_vnn;
2054 }
2055
2056 /****************************************************************
2057 Check if an offset into a buffer is safe.
2058 If this returns True it's safe to indirect into the byte at
2059 pointer ptr+off.
2060 ****************************************************************/
2061
2062 bool is_offset_safe(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2063 {
2064 const char *end_base = buf_base + buf_len;
2065 char *end_ptr = ptr + off;
2066
2067 if (!buf_base || !ptr) {
2068 return False;
2069 }
2070
2071 if (end_base < buf_base || end_ptr < ptr) {
2072 return False; /* wrap. */
2073 }
2074
2075 if (end_ptr < end_base) {
2076 return True;
2077 }
2078 return False;
2079 }
2080
2081 /****************************************************************
2082 Return a safe pointer into a buffer, or NULL.
2083 ****************************************************************/
2084
2085 char *get_safe_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2086 {
2087 return is_offset_safe(buf_base, buf_len, ptr, off) ?
2088 ptr + off : NULL;
2089 }
2090
2091 /****************************************************************
2092 Return a safe pointer into a string within a buffer, or NULL.
2093 ****************************************************************/
2094
2095 char *get_safe_str_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2096 {
2097 if (!is_offset_safe(buf_base, buf_len, ptr, off)) {
2098 return NULL;
2099 }
2100 /* Check if a valid string exists at this offset. */
2101 if (skip_string(buf_base,buf_len, ptr + off) == NULL) {
2102 return NULL;
2103 }
2104 return ptr + off;
2105 }
2106
2107 /****************************************************************
2108 Return an SVAL at a pointer, or failval if beyond the end.
2109 ****************************************************************/
2110
2111 int get_safe_SVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
2112 {
2113 /*
2114 * Note we use off+1 here, not off+2 as SVAL accesses ptr[0] and ptr[1],
2115 * NOT ptr[2].
2116 */
2117 if (!is_offset_safe(buf_base, buf_len, ptr, off+1)) {
2118 return failval;
2119 }
2120 return SVAL(ptr,off);
2121 }
2122
2123 /****************************************************************
2124 Return an IVAL at a pointer, or failval if beyond the end.
2125 ****************************************************************/
2126
2127 int get_safe_IVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
2128 {
2129 /*
2130 * Note we use off+3 here, not off+4 as IVAL accesses
2131 * ptr[0] ptr[1] ptr[2] ptr[3] NOT ptr[4].
2132 */
2133 if (!is_offset_safe(buf_base, buf_len, ptr, off+3)) {
2134 return failval;
2135 }
2136 return IVAL(ptr,off);
2137 }
2138
2139 /****************************************************************
2140 Split DOM\user into DOM and user. Do not mix with winbind variants of that
2141 call (they take care of winbind separator and other winbind specific settings).
2142 ****************************************************************/
2143
2144 void split_domain_user(TALLOC_CTX *mem_ctx,
2145 const char *full_name,
2146 char **domain,
2147 char **user)
2148 {
2149 const char *p = NULL;
2150
2151 p = strchr_m(full_name, '\\');
2152
2153 if (p != NULL) {
2154 *domain = talloc_strndup(mem_ctx, full_name,
2155 PTR_DIFF(p, full_name));
2156 *user = talloc_strdup(mem_ctx, p+1);
2157 } else {
2158 *domain = talloc_strdup(mem_ctx, "");
2159 *user = talloc_strdup(mem_ctx, full_name);
2160 }
2161 }
2162
2163 /****************************************************************
2164 strip off leading '\\' from a hostname
2165 ****************************************************************/
2166
2167 const char *strip_hostname(const char *s)
2168 {
2169 if (!s) {
2170 return NULL;
2171 }
2172
2173 if (strlen_m(s) < 3) {
2174 return s;
2175 }
2176
2177 if (s[0] == '\\') s++;
2178 if (s[0] == '\\') s++;
2179
2180 return s;
2181 }
2182
2183 bool any_nt_status_not_ok(NTSTATUS err1, NTSTATUS err2, NTSTATUS *result)
2184 {
2185 if (!NT_STATUS_IS_OK(err1)) {
2186 *result = err1;
2187 return true;
2188 }
2189 if (!NT_STATUS_IS_OK(err2)) {
2190 *result = err2;
2191 return true;
2192 }
2193 return false;
2194 }
2195
2196 int timeval_to_msec(struct timeval t)
2197 {
2198 return t.tv_sec * 1000 + (t.tv_usec+999) / 1000;
2199 }
2200
2201 /*******************************************************************
2202 Check a given DOS pathname is valid for a share.
2203 ********************************************************************/
2204
2205 char *valid_share_pathname(TALLOC_CTX *ctx, const char *dos_pathname)
2206 {
2207 char *ptr = NULL;
2208
2209 if (!dos_pathname) {
2210 return NULL;
2211 }
2212
2213 ptr = talloc_strdup(ctx, dos_pathname);
2214 if (!ptr) {
2215 return NULL;
2216 }
2217 /* Convert any '\' paths to '/' */
2218 unix_format(ptr);
2219 ptr = unix_clean_name(ctx, ptr);
2220 if (!ptr) {
2221 return NULL;
2222 }
2223
2224 /* NT is braindead - it wants a C: prefix to a pathname ! So strip it. */
2225 if (strlen(ptr) > 2 && ptr[1] == ':' && ptr[0] != '/')
2226 ptr += 2;
2227
2228 /* Only absolute paths allowed. */
2229 if (*ptr != '/')
2230 return NULL;
2231
2232 return ptr;
2233 }
2234
2235 /*******************************************************************
2236 Return True if the filename is one of the special executable types.
2237 ********************************************************************/
2238
2239 bool is_executable(const char *fname)
2240 {
2241 if ((fname = strrchr_m(fname,'.'))) {
2242 if (strequal(fname,".com") ||
2243 strequal(fname,".dll") ||
2244 strequal(fname,".exe") ||
2245 strequal(fname,".sym")) {
2246 return True;
2247 }
2248 }
2249 return False;
2250 }
2251
2252 /****************************************************************************
2253 Open a file with a share mode - old openX method - map into NTCreate.
2254 ****************************************************************************/
2255
2256 bool map_open_params_to_ntcreate(const char *smb_base_fname,
2257 int deny_mode, int open_func,
2258 uint32 *paccess_mask,
2259 uint32 *pshare_mode,
2260 uint32 *pcreate_disposition,
2261 uint32 *pcreate_options,
2262 uint32_t *pprivate_flags)
2263 {
2264 uint32 access_mask;
2265 uint32 share_mode;
2266 uint32 create_disposition;
2267 uint32 create_options = FILE_NON_DIRECTORY_FILE;
2268 uint32_t private_flags = 0;
2269
2270 DEBUG(10,("map_open_params_to_ntcreate: fname = %s, deny_mode = 0x%x, "
2271 "open_func = 0x%x\n",
2272 smb_base_fname, (unsigned int)deny_mode,
2273 (unsigned int)open_func ));
2274
2275 /* Create the NT compatible access_mask. */
2276 switch (GET_OPENX_MODE(deny_mode)) {
2277 case DOS_OPEN_EXEC: /* Implies read-only - used to be FILE_READ_DATA */
2278 case DOS_OPEN_RDONLY:
2279 access_mask = FILE_GENERIC_READ;
2280 break;
2281 case DOS_OPEN_WRONLY:
2282 access_mask = FILE_GENERIC_WRITE;
2283 break;
2284 case DOS_OPEN_RDWR:
2285 case DOS_OPEN_FCB:
2286 access_mask = FILE_GENERIC_READ|FILE_GENERIC_WRITE;
2287 break;
2288 default:
2289 DEBUG(10,("map_open_params_to_ntcreate: bad open mode = 0x%x\n",
2290 (unsigned int)GET_OPENX_MODE(deny_mode)));
2291 return False;
2292 }
2293
2294 /* Create the NT compatible create_disposition. */
2295 switch (open_func) {
2296 case OPENX_FILE_EXISTS_FAIL|OPENX_FILE_CREATE_IF_NOT_EXIST:
2297 create_disposition = FILE_CREATE;
2298 break;
2299
2300 case OPENX_FILE_EXISTS_OPEN:
2301 create_disposition = FILE_OPEN;
2302 break;
2303
2304 case OPENX_FILE_EXISTS_OPEN|OPENX_FILE_CREATE_IF_NOT_EXIST:
2305 create_disposition = FILE_OPEN_IF;
2306 break;
2307
2308 case OPENX_FILE_EXISTS_TRUNCATE:
2309 create_disposition = FILE_OVERWRITE;
2310 break;
2311
2312 case OPENX_FILE_EXISTS_TRUNCATE|OPENX_FILE_CREATE_IF_NOT_EXIST:
2313 create_disposition = FILE_OVERWRITE_IF;
2314 break;
2315
2316 default:
2317 /* From samba4 - to be confirmed. */
2318 if (GET_OPENX_MODE(deny_mode) == DOS_OPEN_EXEC) {
2319 create_disposition = FILE_CREATE;
2320 break;
2321 }
2322 DEBUG(10,("map_open_params_to_ntcreate: bad "
2323 "open_func 0x%x\n", (unsigned int)open_func));
2324 return False;
2325 }
2326
2327 /* Create the NT compatible share modes. */
2328 switch (GET_DENY_MODE(deny_mode)) {
2329 case DENY_ALL:
2330 share_mode = FILE_SHARE_NONE;
2331 break;
2332
2333 case DENY_WRITE:
2334 share_mode = FILE_SHARE_READ;
2335 break;
2336
2337 case DENY_READ:
2338 share_mode = FILE_SHARE_WRITE;
2339 break;
2340
2341 case DENY_NONE:
2342 share_mode = FILE_SHARE_READ|FILE_SHARE_WRITE;
2343 break;
2344
2345 case DENY_DOS:
2346 private_flags |= NTCREATEX_OPTIONS_PRIVATE_DENY_DOS;
2347 if (is_executable(smb_base_fname)) {
2348 share_mode = FILE_SHARE_READ|FILE_SHARE_WRITE;
2349 } else {
2350 if (GET_OPENX_MODE(deny_mode) == DOS_OPEN_RDONLY) {
2351 share_mode = FILE_SHARE_READ;
2352 } else {
2353 share_mode = FILE_SHARE_NONE;
2354 }
2355 }
2356 break;
2357
2358 case DENY_FCB:
2359 private_flags |= NTCREATEX_OPTIONS_PRIVATE_DENY_FCB;
2360 share_mode = FILE_SHARE_NONE;
2361 break;
2362
2363 default:
2364 DEBUG(10,("map_open_params_to_ntcreate: bad deny_mode 0x%x\n",
2365 (unsigned int)GET_DENY_MODE(deny_mode) ));
2366 return False;
2367 }
2368
2369 DEBUG(10,("map_open_params_to_ntcreate: file %s, access_mask = 0x%x, "
2370 "share_mode = 0x%x, create_disposition = 0x%x, "
2371 "create_options = 0x%x private_flags = 0x%x\n",
2372 smb_base_fname,
2373 (unsigned int)access_mask,
2374 (unsigned int)share_mode,
2375 (unsigned int)create_disposition,
2376 (unsigned int)create_options,
2377 (unsigned int)private_flags));
2378
2379 if (paccess_mask) {
2380 *paccess_mask = access_mask;
2381 }
2382 if (pshare_mode) {
2383 *pshare_mode = share_mode;
2384 }
2385 if (pcreate_disposition) {
2386 *pcreate_disposition = create_disposition;
2387 }
2388 if (pcreate_options) {
2389 *pcreate_options = create_options;
2390 }
2391 if (pprivate_flags) {
2392 *pprivate_flags = private_flags;
2393 }
2394
2395 return True;
2396
2397 }
2398
2399 /*************************************************************************
2400 Return a talloced copy of a struct security_unix_token. NULL on fail.
2401 *************************************************************************/
2402
2403 struct security_unix_token *copy_unix_token(TALLOC_CTX *ctx, const struct security_unix_token *tok)
2404 {
2405 struct security_unix_token *cpy;
2406
2407 cpy = talloc(ctx, struct security_unix_token);
2408 if (!cpy) {
2409 return NULL;
2410 }
2411
2412 cpy->uid = tok->uid;
2413 cpy->gid = tok->gid;
2414 cpy->ngroups = tok->ngroups;
2415 if (tok->ngroups) {
2416 /* Make this a talloc child of cpy. */
2417 cpy->groups = (gid_t *)talloc_memdup(
2418 cpy, tok->groups, tok->ngroups * sizeof(gid_t));
2419 if (!cpy->groups) {
2420 TALLOC_FREE(cpy);
2421 return NULL;
2422 }
2423 } else {
2424 cpy->groups = NULL;
2425 }
2426 return cpy;
2427 }
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