Line data Source code
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 : /**
25 : * @brief Small functions that don't fit anywhere else
26 : * @file util.c
27 : */
28 :
29 : #include "includes.h"
30 : #include "system/passwd.h"
31 : #include "system/filesys.h"
32 : #include "lib/util/server_id.h"
33 : #include "lib/util/memcache.h"
34 : #include "util_tdb.h"
35 : #include "ctdbd_conn.h"
36 : #include "../lib/util/util_pw.h"
37 : #include "messages.h"
38 : #include "lib/messaging/messages_dgm.h"
39 : #include "libcli/security/security.h"
40 : #include "serverid.h"
41 : #include "lib/util/sys_rw.h"
42 : #include "lib/util/sys_rw_data.h"
43 : #include "lib/util/util_process.h"
44 : #include "lib/dbwrap/dbwrap_ctdb.h"
45 : #include "lib/gencache.h"
46 : #include "lib/util/string_wrappers.h"
47 :
48 : #ifdef HAVE_SYS_PRCTL_H
49 : #include <sys/prctl.h>
50 : #endif
51 :
52 : /* Max allowable allococation - 256mb - 0x10000000 */
53 : #define MAX_ALLOC_SIZE (1024*1024*256)
54 :
55 : static enum protocol_types Protocol = PROTOCOL_COREPLUS;
56 :
57 1219017 : enum protocol_types get_Protocol(void)
58 : {
59 1219017 : return Protocol;
60 : }
61 :
62 30491 : void set_Protocol(enum protocol_types p)
63 : {
64 30491 : Protocol = p;
65 30491 : }
66 :
67 : static enum remote_arch_types ra_type = RA_UNKNOWN;
68 :
69 14017 : void gfree_all( void )
70 : {
71 14017 : gfree_loadparm();
72 14017 : gfree_charcnv();
73 14017 : gfree_interfaces();
74 14017 : gfree_debugsyms();
75 14017 : gfree_memcache();
76 :
77 14017 : }
78 :
79 : /*******************************************************************
80 : Check if a file exists - call vfs_file_exist for samba files.
81 : ********************************************************************/
82 :
83 1011 : bool file_exist_stat(const char *fname,SMB_STRUCT_STAT *sbuf,
84 : bool fake_dir_create_times)
85 : {
86 0 : SMB_STRUCT_STAT st;
87 1011 : if (!sbuf)
88 0 : sbuf = &st;
89 :
90 1011 : if (sys_stat(fname, sbuf, fake_dir_create_times) != 0)
91 0 : return(False);
92 :
93 1011 : return((S_ISREG(sbuf->st_ex_mode)) || (S_ISFIFO(sbuf->st_ex_mode)));
94 : }
95 :
96 : /*******************************************************************
97 : Check if a unix domain socket exists - call vfs_file_exist for samba files.
98 : ********************************************************************/
99 :
100 0 : bool socket_exist(const char *fname)
101 : {
102 0 : SMB_STRUCT_STAT st;
103 0 : if (sys_stat(fname, &st, false) != 0)
104 0 : return(False);
105 :
106 0 : return S_ISSOCK(st.st_ex_mode);
107 : }
108 :
109 : /*******************************************************************
110 : Returns the size in bytes of the named given the stat struct.
111 : ********************************************************************/
112 :
113 2339445 : uint64_t get_file_size_stat(const SMB_STRUCT_STAT *sbuf)
114 : {
115 2339445 : return sbuf->st_ex_size;
116 : }
117 :
118 : /****************************************************************************
119 : Check two stats have identical dev and ino fields.
120 : ****************************************************************************/
121 :
122 289994 : bool check_same_dev_ino(const SMB_STRUCT_STAT *sbuf1,
123 : const SMB_STRUCT_STAT *sbuf2)
124 : {
125 579275 : return ((sbuf1->st_ex_dev == sbuf2->st_ex_dev) &&
126 289994 : (sbuf1->st_ex_ino == sbuf2->st_ex_ino));
127 : }
128 :
129 : /****************************************************************************
130 : Check if a stat struct is identical for use.
131 : ****************************************************************************/
132 :
133 2 : bool check_same_stat(const SMB_STRUCT_STAT *sbuf1,
134 : const SMB_STRUCT_STAT *sbuf2)
135 : {
136 4 : return ((sbuf1->st_ex_uid == sbuf2->st_ex_uid) &&
137 4 : (sbuf1->st_ex_gid == sbuf2->st_ex_gid) &&
138 2 : check_same_dev_ino(sbuf1, sbuf2));
139 : }
140 :
141 : /*******************************************************************
142 : Show a smb message structure.
143 : ********************************************************************/
144 :
145 1306774 : void show_msg(const char *buf)
146 : {
147 15942 : int i;
148 1306774 : int bcc=0;
149 :
150 1306774 : if (!DEBUGLVL(5))
151 1306774 : return;
152 :
153 0 : DEBUG(5,("size=%d\nsmb_com=0x%x\nsmb_rcls=%d\nsmb_reh=%d\nsmb_err=%d\nsmb_flg=%d\nsmb_flg2=%d\n",
154 : smb_len(buf),
155 : (int)CVAL(buf,smb_com),
156 : (int)CVAL(buf,smb_rcls),
157 : (int)CVAL(buf,smb_reh),
158 : (int)SVAL(buf,smb_err),
159 : (int)CVAL(buf,smb_flg),
160 : (int)SVAL(buf,smb_flg2)));
161 0 : DEBUGADD(5,("smb_tid=%d\nsmb_pid=%d\nsmb_uid=%d\nsmb_mid=%d\n",
162 : (int)SVAL(buf,smb_tid),
163 : (int)SVAL(buf,smb_pid),
164 : (int)SVAL(buf,smb_uid),
165 : (int)SVAL(buf,smb_mid)));
166 0 : DEBUGADD(5,("smt_wct=%d\n",(int)CVAL(buf,smb_wct)));
167 :
168 0 : for (i=0;i<(int)CVAL(buf,smb_wct);i++)
169 0 : DEBUGADD(5,("smb_vwv[%2d]=%5d (0x%X)\n",i,
170 : SVAL(buf,smb_vwv+2*i),SVAL(buf,smb_vwv+2*i)));
171 :
172 0 : bcc = (int)SVAL(buf,smb_vwv+2*(CVAL(buf,smb_wct)));
173 :
174 0 : DEBUGADD(5,("smb_bcc=%d\n",bcc));
175 :
176 0 : if (DEBUGLEVEL < 10)
177 0 : return;
178 :
179 0 : if (DEBUGLEVEL < 50)
180 0 : bcc = MIN(bcc, 512);
181 :
182 0 : dump_data(10, (const uint8_t *)smb_buf_const(buf), bcc);
183 : }
184 :
185 : /*******************************************************************
186 : Setup only the byte count for a smb message.
187 : ********************************************************************/
188 :
189 90648 : int set_message_bcc(char *buf,int num_bytes)
190 : {
191 90648 : int num_words = CVAL(buf,smb_wct);
192 90648 : SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes);
193 90648 : _smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4);
194 90648 : return (smb_size + num_words*2 + num_bytes);
195 : }
196 :
197 : /*******************************************************************
198 : Add a data blob to the end of a smb_buf, adjusting bcc and smb_len.
199 : Return the bytes added
200 : ********************************************************************/
201 :
202 37845 : ssize_t message_push_blob(uint8_t **outbuf, DATA_BLOB blob)
203 : {
204 37845 : size_t newlen = smb_len(*outbuf) + 4 + blob.length;
205 266 : uint8_t *tmp;
206 :
207 37845 : if (!(tmp = talloc_realloc(NULL, *outbuf, uint8_t, newlen))) {
208 0 : DEBUG(0, ("talloc failed\n"));
209 0 : return -1;
210 : }
211 37845 : *outbuf = tmp;
212 :
213 37845 : memcpy(tmp + smb_len(tmp) + 4, blob.data, blob.length);
214 37845 : set_message_bcc((char *)tmp, smb_buflen(tmp) + blob.length);
215 37845 : return blob.length;
216 : }
217 :
218 : /*******************************************************************
219 : Reduce a file name, removing .. elements.
220 : ********************************************************************/
221 :
222 15283 : static char *dos_clean_name(TALLOC_CTX *ctx, const char *s)
223 : {
224 15283 : char *p = NULL;
225 15283 : char *str = NULL;
226 :
227 15283 : DEBUG(3,("dos_clean_name [%s]\n",s));
228 :
229 : /* remove any double slashes */
230 15283 : str = talloc_all_string_sub(ctx, s, "\\\\", "\\");
231 15283 : if (!str) {
232 0 : return NULL;
233 : }
234 :
235 : /* Remove leading .\\ characters */
236 15283 : if(strncmp(str, ".\\", 2) == 0) {
237 0 : trim_string(str, ".\\", NULL);
238 0 : if(*str == 0) {
239 0 : str = talloc_strdup(ctx, ".\\");
240 0 : if (!str) {
241 0 : return NULL;
242 : }
243 : }
244 : }
245 :
246 15345 : while ((p = strstr_m(str,"\\..\\")) != NULL) {
247 0 : char *s1;
248 :
249 62 : *p = 0;
250 62 : s1 = p+3;
251 :
252 62 : if ((p=strrchr_m(str,'\\')) != NULL) {
253 60 : *p = 0;
254 : } else {
255 2 : *str = 0;
256 : }
257 62 : str = talloc_asprintf(ctx,
258 : "%s%s",
259 : str,
260 : s1);
261 62 : if (!str) {
262 0 : return NULL;
263 : }
264 : }
265 :
266 15283 : trim_string(str,NULL,"\\..");
267 15283 : return talloc_all_string_sub(ctx, str, "\\.\\", "\\");
268 : }
269 :
270 : /*******************************************************************
271 : Reduce a file name, removing .. elements.
272 : ********************************************************************/
273 :
274 15715 : char *unix_clean_name(TALLOC_CTX *ctx, const char *s)
275 : {
276 15715 : char *p = NULL;
277 15715 : char *str = NULL;
278 :
279 15715 : DEBUG(3,("unix_clean_name [%s]\n",s));
280 :
281 : /* remove any double slashes */
282 15715 : str = talloc_all_string_sub(ctx, s, "//","/");
283 15715 : if (!str) {
284 0 : return NULL;
285 : }
286 :
287 : /* Remove leading ./ characters */
288 15715 : if(strncmp(str, "./", 2) == 0) {
289 0 : trim_string(str, "./", NULL);
290 0 : if(*str == 0) {
291 0 : str = talloc_strdup(ctx, "./");
292 0 : if (!str) {
293 0 : return NULL;
294 : }
295 : }
296 : }
297 :
298 15715 : while ((p = strstr_m(str,"/../")) != NULL) {
299 0 : char *s1;
300 :
301 0 : *p = 0;
302 0 : s1 = p+3;
303 :
304 0 : if ((p=strrchr_m(str,'/')) != NULL) {
305 0 : *p = 0;
306 : } else {
307 0 : *str = 0;
308 : }
309 0 : str = talloc_asprintf(ctx,
310 : "%s%s",
311 : str,
312 : s1);
313 0 : if (!str) {
314 0 : return NULL;
315 : }
316 : }
317 :
318 15715 : trim_string(str,NULL,"/..");
319 15715 : return talloc_all_string_sub(ctx, str, "/./", "/");
320 : }
321 :
322 15283 : char *clean_name(TALLOC_CTX *ctx, const char *s)
323 : {
324 15283 : char *str = dos_clean_name(ctx, s);
325 15283 : if (!str) {
326 0 : return NULL;
327 : }
328 15283 : return unix_clean_name(ctx, str);
329 : }
330 :
331 : /*******************************************************************
332 : Write data into an fd at a given offset. Ignore seek errors.
333 : ********************************************************************/
334 :
335 0 : ssize_t write_data_at_offset(int fd, const char *buffer, size_t N, off_t pos)
336 : {
337 0 : size_t total=0;
338 0 : ssize_t ret;
339 :
340 0 : if (pos == (off_t)-1) {
341 0 : return write_data(fd, buffer, N);
342 : }
343 : #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
344 0 : while (total < N) {
345 0 : ret = sys_pwrite(fd,buffer + total,N - total, pos);
346 0 : if (ret == -1 && errno == ESPIPE) {
347 0 : return write_data(fd, buffer + total,N - total);
348 : }
349 0 : if (ret == -1) {
350 0 : DEBUG(0,("write_data_at_offset: write failure. Error = %s\n", strerror(errno) ));
351 0 : return -1;
352 : }
353 0 : if (ret == 0) {
354 0 : return total;
355 : }
356 0 : total += ret;
357 0 : pos += ret;
358 : }
359 0 : return (ssize_t)total;
360 : #else
361 : /* Use lseek and write_data. */
362 : if (lseek(fd, pos, SEEK_SET) == -1) {
363 : if (errno != ESPIPE) {
364 : return -1;
365 : }
366 : }
367 : return write_data(fd, buffer, N);
368 : #endif
369 : }
370 :
371 : static int reinit_after_fork_pipe[2] = { -1, -1 };
372 :
373 80 : NTSTATUS init_before_fork(void)
374 : {
375 0 : int ret;
376 :
377 80 : ret = pipe(reinit_after_fork_pipe);
378 80 : if (ret == -1) {
379 0 : NTSTATUS status;
380 :
381 0 : status = map_nt_error_from_unix_common(errno);
382 :
383 0 : DEBUG(0, ("Error creating child_pipe: %s\n",
384 : nt_errstr(status)));
385 :
386 0 : return status;
387 : }
388 :
389 80 : return NT_STATUS_OK;
390 : }
391 :
392 : /**
393 : * @brief Get a fd to watch for our parent process to exit
394 : *
395 : * Samba parent processes open a pipe that naturally closes when the
396 : * parent exits. Child processes can watch the read end of the pipe
397 : * for readability: Readability with 0 bytes to read means the parent
398 : * has exited and the child process might also want to exit.
399 : */
400 :
401 0 : int parent_watch_fd(void)
402 : {
403 0 : return reinit_after_fork_pipe[0];
404 : }
405 :
406 : /**
407 : * Detect died parent by detecting EOF on the pipe
408 : */
409 13 : static void reinit_after_fork_pipe_handler(struct tevent_context *ev,
410 : struct tevent_fd *fde,
411 : uint16_t flags,
412 : void *private_data)
413 : {
414 0 : char c;
415 :
416 13 : if (sys_read(reinit_after_fork_pipe[0], &c, 1) != 1) {
417 : /*
418 : * we have reached EOF on stdin, which means the
419 : * parent has exited. Shutdown the server
420 : */
421 13 : TALLOC_FREE(fde);
422 13 : (void)kill(getpid(), SIGTERM);
423 : }
424 13 : }
425 :
426 :
427 31285 : NTSTATUS reinit_after_fork(struct messaging_context *msg_ctx,
428 : struct tevent_context *ev_ctx,
429 : bool parent_longlived)
430 : {
431 31285 : NTSTATUS status = NT_STATUS_OK;
432 850 : int ret;
433 :
434 : /*
435 : * The main process thread should never
436 : * allow per_thread_cwd_enable() to be
437 : * called.
438 : */
439 31285 : per_thread_cwd_disable();
440 :
441 31285 : if (reinit_after_fork_pipe[1] != -1) {
442 31052 : close(reinit_after_fork_pipe[1]);
443 31052 : reinit_after_fork_pipe[1] = -1;
444 : }
445 :
446 : /* tdb needs special fork handling */
447 31285 : if (tdb_reopen_all(parent_longlived ? 1 : 0) != 0) {
448 0 : DEBUG(0,("tdb_reopen_all failed.\n"));
449 0 : status = NT_STATUS_OPEN_FAILED;
450 0 : goto done;
451 : }
452 :
453 31285 : if (ev_ctx != NULL) {
454 : /*
455 : * The parent can have different private data for the callbacks,
456 : * which are gone in the child. Reset the callbacks to be safe.
457 : */
458 31285 : tevent_set_trace_callback(ev_ctx, NULL, NULL);
459 31285 : tevent_set_trace_fd_callback(ev_ctx, NULL, NULL);
460 31285 : tevent_set_trace_signal_callback(ev_ctx, NULL, NULL);
461 31285 : tevent_set_trace_timer_callback(ev_ctx, NULL, NULL);
462 31285 : tevent_set_trace_immediate_callback(ev_ctx, NULL, NULL);
463 31285 : tevent_set_trace_queue_callback(ev_ctx, NULL, NULL);
464 31285 : if (tevent_re_initialise(ev_ctx) != 0) {
465 0 : smb_panic(__location__ ": Failed to re-initialise event context");
466 : }
467 : }
468 :
469 31285 : if (reinit_after_fork_pipe[0] != -1) {
470 842 : struct tevent_fd *fde;
471 :
472 31052 : fde = tevent_add_fd(ev_ctx, ev_ctx /* TALLOC_CTX */,
473 : reinit_after_fork_pipe[0], TEVENT_FD_READ,
474 : reinit_after_fork_pipe_handler, NULL);
475 31052 : if (fde == NULL) {
476 0 : smb_panic(__location__ ": Failed to add reinit_after_fork pipe event");
477 : }
478 : }
479 :
480 31285 : if (msg_ctx) {
481 : /*
482 : * For clustering, we need to re-init our ctdbd connection after the
483 : * fork
484 : */
485 31285 : status = messaging_reinit(msg_ctx);
486 31285 : if (!NT_STATUS_IS_OK(status)) {
487 0 : DEBUG(0,("messaging_reinit() failed: %s\n",
488 : nt_errstr(status)));
489 : }
490 :
491 31285 : if (lp_clustering()) {
492 0 : ret = ctdb_async_ctx_reinit(
493 : NULL, messaging_tevent_context(msg_ctx));
494 0 : if (ret != 0) {
495 0 : DBG_ERR("db_ctdb_async_ctx_reinit failed: %s\n",
496 : strerror(errno));
497 0 : return map_nt_error_from_unix(ret);
498 : }
499 : }
500 : }
501 :
502 31285 : done:
503 31285 : return status;
504 : }
505 :
506 : /****************************************************************************
507 : (Hopefully) efficient array append.
508 : ****************************************************************************/
509 :
510 2631 : void add_to_large_array(TALLOC_CTX *mem_ctx, size_t element_size,
511 : void *element, void *_array, uint32_t *num_elements,
512 : ssize_t *array_size)
513 : {
514 2631 : void **array = (void **)_array;
515 :
516 2631 : if (*array_size < 0) {
517 0 : return;
518 : }
519 :
520 2631 : if (*array == NULL) {
521 43 : if (*array_size == 0) {
522 43 : *array_size = 128;
523 : }
524 :
525 43 : if (*array_size >= MAX_ALLOC_SIZE/element_size) {
526 0 : goto error;
527 : }
528 :
529 43 : *array = TALLOC(mem_ctx, element_size * (*array_size));
530 43 : if (*array == NULL) {
531 0 : goto error;
532 : }
533 : }
534 :
535 2631 : if (*num_elements == *array_size) {
536 16 : *array_size *= 2;
537 :
538 16 : if (*array_size >= MAX_ALLOC_SIZE/element_size) {
539 0 : goto error;
540 : }
541 :
542 16 : *array = TALLOC_REALLOC(mem_ctx, *array,
543 : element_size * (*array_size));
544 :
545 16 : if (*array == NULL) {
546 0 : goto error;
547 : }
548 : }
549 :
550 2631 : memcpy((char *)(*array) + element_size*(*num_elements),
551 : element, element_size);
552 2631 : *num_elements += 1;
553 :
554 2631 : return;
555 :
556 0 : error:
557 0 : *num_elements = 0;
558 0 : *array_size = -1;
559 : }
560 :
561 : /****************************************************************************
562 : Get my own domain name, or "" if we have none.
563 : ****************************************************************************/
564 :
565 58499 : char *get_mydnsdomname(TALLOC_CTX *ctx)
566 : {
567 0 : const char *domname;
568 0 : char *p;
569 :
570 58499 : domname = get_mydnsfullname();
571 58499 : if (!domname) {
572 0 : return NULL;
573 : }
574 :
575 58499 : p = strchr_m(domname, '.');
576 58499 : if (p) {
577 58499 : p++;
578 58499 : return talloc_strdup(ctx, p);
579 : } else {
580 0 : return talloc_strdup(ctx, "");
581 : }
582 : }
583 :
584 62 : bool process_exists(const struct server_id pid)
585 : {
586 62 : return serverid_exists(&pid);
587 : }
588 :
589 : /*******************************************************************
590 : Convert a uid into a user name.
591 : ********************************************************************/
592 :
593 176 : const char *uidtoname(uid_t uid)
594 : {
595 176 : TALLOC_CTX *ctx = talloc_tos();
596 176 : char *name = NULL;
597 176 : struct passwd *pass = NULL;
598 :
599 176 : pass = getpwuid_alloc(ctx,uid);
600 176 : if (pass) {
601 46 : name = talloc_strdup(ctx,pass->pw_name);
602 46 : TALLOC_FREE(pass);
603 : } else {
604 130 : name = talloc_asprintf(ctx,
605 : "%ld",
606 : (long int)uid);
607 : }
608 176 : return name;
609 : }
610 :
611 : /*******************************************************************
612 : Convert a gid into a group name.
613 : ********************************************************************/
614 :
615 60 : char *gidtoname(gid_t gid)
616 : {
617 4 : struct group *grp;
618 :
619 60 : grp = getgrgid(gid);
620 60 : if (grp) {
621 60 : return talloc_strdup(talloc_tos(), grp->gr_name);
622 : }
623 : else {
624 0 : return talloc_asprintf(talloc_tos(),
625 : "%d",
626 : (int)gid);
627 : }
628 : }
629 :
630 : /*******************************************************************
631 : Convert a user name into a uid.
632 : ********************************************************************/
633 :
634 368 : uid_t nametouid(const char *name)
635 : {
636 0 : struct passwd *pass;
637 0 : char *p;
638 0 : uid_t u;
639 :
640 368 : pass = Get_Pwnam_alloc(talloc_tos(), name);
641 368 : if (pass) {
642 368 : u = pass->pw_uid;
643 368 : TALLOC_FREE(pass);
644 368 : return u;
645 : }
646 :
647 0 : u = (uid_t)strtol(name, &p, 0);
648 0 : if ((p != name) && (*p == '\0'))
649 0 : return u;
650 :
651 0 : return (uid_t)-1;
652 : }
653 :
654 : /*******************************************************************
655 : Convert a name to a gid_t if possible. Return -1 if not a group.
656 : ********************************************************************/
657 :
658 185 : gid_t nametogid(const char *name)
659 : {
660 0 : struct group *grp;
661 0 : char *p;
662 0 : gid_t g;
663 :
664 185 : g = (gid_t)strtol(name, &p, 0);
665 185 : if ((p != name) && (*p == '\0'))
666 0 : return g;
667 :
668 185 : grp = getgrnam(name);
669 185 : if (grp)
670 185 : return(grp->gr_gid);
671 0 : return (gid_t)-1;
672 : }
673 :
674 : /*******************************************************************
675 : Something really nasty happened - panic !
676 : ********************************************************************/
677 :
678 0 : void smb_panic_s3(const char *why)
679 : {
680 0 : const struct loadparm_substitution *lp_sub =
681 0 : loadparm_s3_global_substitution();
682 0 : char *cmd;
683 0 : int result;
684 :
685 : #if defined(HAVE_PRCTL) && defined(PR_SET_PTRACER)
686 : /*
687 : * Make sure all children can attach a debugger.
688 : */
689 0 : prctl(PR_SET_PTRACER, getpid(), 0, 0, 0);
690 : #endif
691 :
692 0 : cmd = lp_panic_action(talloc_tos(), lp_sub);
693 0 : if (cmd && *cmd) {
694 0 : DEBUG(0, ("smb_panic(): calling panic action [%s]\n", cmd));
695 0 : result = system(cmd);
696 :
697 0 : if (result == -1)
698 0 : DEBUG(0, ("smb_panic(): fork failed in panic action: %s\n",
699 : strerror(errno)));
700 : else
701 0 : DEBUG(0, ("smb_panic(): action returned status %d\n",
702 : WEXITSTATUS(result)));
703 : }
704 :
705 0 : dump_core();
706 : }
707 :
708 : /*******************************************************************
709 : A readdir wrapper which just returns the file name.
710 : ********************************************************************/
711 :
712 0 : const char *readdirname(DIR *p)
713 : {
714 0 : struct dirent *ptr;
715 0 : char *dname;
716 :
717 0 : if (!p)
718 0 : return(NULL);
719 :
720 0 : ptr = (struct dirent *)readdir(p);
721 0 : if (!ptr)
722 0 : return(NULL);
723 :
724 0 : dname = ptr->d_name;
725 :
726 0 : return talloc_strdup(talloc_tos(), dname);
727 : }
728 :
729 : /*******************************************************************
730 : Utility function used to decide if the last component
731 : of a path matches a (possibly wildcarded) entry in a namelist.
732 : ********************************************************************/
733 :
734 6189316 : bool is_in_path(const char *name, name_compare_entry *namelist, bool case_sensitive)
735 : {
736 23300 : const char *last_component;
737 :
738 : /* if we have no list it's obviously not in the path */
739 6189316 : if ((namelist == NULL) || (namelist[0].name == NULL)) {
740 6165522 : return False;
741 : }
742 :
743 : /* Do not reject path components if namelist is set to '.*' */
744 508 : if (ISDOT(name) || ISDOTDOT(name)) {
745 70 : return false;
746 : }
747 :
748 438 : DEBUG(8, ("is_in_path: %s\n", name));
749 :
750 : /* Get the last component of the unix name. */
751 438 : last_component = strrchr_m(name, '/');
752 438 : if (!last_component) {
753 422 : last_component = name;
754 : } else {
755 30 : last_component++; /* Go past '/' */
756 : }
757 :
758 806 : for(; namelist->name != NULL; namelist++) {
759 457 : if(namelist->is_wild) {
760 431 : if (mask_match(last_component, namelist->name, case_sensitive)) {
761 78 : DEBUG(8,("is_in_path: mask match succeeded\n"));
762 78 : return True;
763 : }
764 : } else {
765 26 : if((case_sensitive && (strcmp(last_component, namelist->name) == 0))||
766 21 : (!case_sensitive && (strcasecmp_m(last_component, namelist->name) == 0))) {
767 11 : DEBUG(8,("is_in_path: match succeeded\n"));
768 11 : return True;
769 : }
770 : }
771 : }
772 349 : DEBUG(8,("is_in_path: match not found\n"));
773 344 : return False;
774 : }
775 :
776 : /*******************************************************************
777 : Strip a '/' separated list into an array of
778 : name_compare_enties structures suitable for
779 : passing to is_in_path(). We do this for
780 : speed so we can pre-parse all the names in the list
781 : and don't do it for each call to is_in_path().
782 : We also check if the entry contains a wildcard to
783 : remove a potentially expensive call to mask_match
784 : if possible.
785 : ********************************************************************/
786 :
787 87277 : void set_namearray(name_compare_entry **ppname_array, const char *namelist_in)
788 : {
789 1437 : char *name_end;
790 1437 : char *namelist;
791 1437 : char *namelist_end;
792 1437 : char *nameptr;
793 87277 : int num_entries = 0;
794 1437 : int i;
795 :
796 87277 : (*ppname_array) = NULL;
797 :
798 87277 : if((namelist_in == NULL ) || ((namelist_in != NULL) && (*namelist_in == '\0')))
799 85736 : return;
800 :
801 105 : namelist = talloc_strdup(talloc_tos(), namelist_in);
802 105 : if (namelist == NULL) {
803 0 : DEBUG(0,("set_namearray: talloc fail\n"));
804 0 : return;
805 : }
806 105 : nameptr = namelist;
807 :
808 105 : namelist_end = &namelist[strlen(namelist)];
809 :
810 : /* We need to make two passes over the string. The
811 : first to count the number of elements, the second
812 : to split it.
813 : */
814 :
815 309 : while(nameptr <= namelist_end) {
816 309 : if ( *nameptr == '/' ) {
817 : /* cope with multiple (useless) /s) */
818 97 : nameptr++;
819 97 : continue;
820 : }
821 : /* anything left? */
822 212 : if ( *nameptr == '\0' )
823 104 : break;
824 :
825 : /* find the next '/' or consume remaining */
826 107 : name_end = strchr_m(nameptr, '/');
827 107 : if (name_end == NULL) {
828 : /* Point nameptr at the terminating '\0' */
829 8 : nameptr += strlen(nameptr);
830 : } else {
831 : /* next segment please */
832 99 : nameptr = name_end + 1;
833 : }
834 107 : num_entries++;
835 : }
836 :
837 105 : if(num_entries == 0) {
838 0 : talloc_free(namelist);
839 0 : return;
840 : }
841 :
842 105 : if(( (*ppname_array) = SMB_MALLOC_ARRAY(name_compare_entry, num_entries + 1)) == NULL) {
843 0 : DEBUG(0,("set_namearray: malloc fail\n"));
844 0 : talloc_free(namelist);
845 0 : return;
846 : }
847 :
848 : /* Now copy out the names */
849 104 : nameptr = namelist;
850 104 : i = 0;
851 309 : while(nameptr <= namelist_end) {
852 309 : if ( *nameptr == '/' ) {
853 : /* cope with multiple (useless) /s) */
854 97 : nameptr++;
855 97 : continue;
856 : }
857 : /* anything left? */
858 212 : if ( *nameptr == '\0' )
859 104 : break;
860 :
861 : /* find the next '/' or consume remaining */
862 107 : name_end = strchr_m(nameptr, '/');
863 107 : if (name_end != NULL) {
864 99 : *name_end = '\0';
865 : }
866 :
867 107 : (*ppname_array)[i].is_wild = ms_has_wild(nameptr);
868 107 : if(((*ppname_array)[i].name = SMB_STRDUP(nameptr)) == NULL) {
869 0 : DEBUG(0,("set_namearray: malloc fail (1)\n"));
870 0 : talloc_free(namelist);
871 0 : return;
872 : }
873 :
874 107 : if (name_end == NULL) {
875 : /* Point nameptr at the terminating '\0' */
876 8 : nameptr += strlen(nameptr);
877 : } else {
878 : /* next segment please */
879 99 : nameptr = name_end + 1;
880 : }
881 107 : i++;
882 : }
883 :
884 105 : (*ppname_array)[i].name = NULL;
885 :
886 105 : talloc_free(namelist);
887 105 : return;
888 : }
889 :
890 : #undef DBGC_CLASS
891 : #define DBGC_CLASS DBGC_LOCKING
892 :
893 : /****************************************************************************
894 : Simple routine to query existing file locks. Cruft in NFS and 64->32 bit mapping
895 : is dealt with in posix.c
896 : Returns True if we have information regarding this lock region (and returns
897 : F_UNLCK in *ptype if the region is unlocked). False if the call failed.
898 : ****************************************************************************/
899 :
900 205696 : bool fcntl_getlock(int fd, int op, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid)
901 : {
902 113 : struct flock lock;
903 113 : int ret;
904 :
905 205696 : DEBUG(8,("fcntl_getlock fd=%d op=%d offset=%.0f count=%.0f type=%d\n",
906 : fd,op,(double)*poffset,(double)*pcount,*ptype));
907 :
908 205696 : lock.l_type = *ptype;
909 205696 : lock.l_whence = SEEK_SET;
910 205696 : lock.l_start = *poffset;
911 205696 : lock.l_len = *pcount;
912 205696 : lock.l_pid = 0;
913 :
914 205696 : ret = sys_fcntl_ptr(fd,op,&lock);
915 :
916 205696 : if (ret == -1) {
917 0 : int saved_errno = errno;
918 0 : DEBUG(3,("fcntl_getlock: lock request failed at offset %.0f count %.0f type %d (%s)\n",
919 : (double)*poffset,(double)*pcount,*ptype,strerror(errno)));
920 0 : errno = saved_errno;
921 0 : return False;
922 : }
923 :
924 205696 : *ptype = lock.l_type;
925 205696 : *poffset = lock.l_start;
926 205696 : *pcount = lock.l_len;
927 205696 : *ppid = lock.l_pid;
928 :
929 205696 : DEBUG(3,("fcntl_getlock: fd %d is returned info %d pid %u\n",
930 : fd, (int)lock.l_type, (unsigned int)lock.l_pid));
931 205583 : return True;
932 : }
933 :
934 : #if defined(HAVE_OFD_LOCKS)
935 211376 : int map_process_lock_to_ofd_lock(int op)
936 : {
937 211376 : switch (op) {
938 205583 : case F_GETLK:
939 : case F_OFD_GETLK:
940 205583 : op = F_OFD_GETLK;
941 205583 : break;
942 5680 : case F_SETLK:
943 : case F_OFD_SETLK:
944 5680 : op = F_OFD_SETLK;
945 5680 : break;
946 0 : case F_SETLKW:
947 : case F_OFD_SETLKW:
948 0 : op = F_OFD_SETLKW;
949 0 : break;
950 0 : default:
951 0 : return -1;
952 : }
953 211229 : return op;
954 : }
955 : #else /* HAVE_OFD_LOCKS */
956 : int map_process_lock_to_ofd_lock(int op)
957 : {
958 : return op;
959 : }
960 : #endif /* HAVE_OFD_LOCKS */
961 :
962 : #undef DBGC_CLASS
963 : #define DBGC_CLASS DBGC_ALL
964 :
965 : /*******************************************************************
966 : Is the name specified one of my netbios names.
967 : Returns true if it is equal, false otherwise.
968 : ********************************************************************/
969 :
970 20522 : static bool nb_name_equal(const char *s1, const char *s2)
971 : {
972 20522 : int cmp = strncasecmp_m(s1, s2, MAX_NETBIOSNAME_LEN-1);
973 20522 : return (cmp == 0);
974 : }
975 :
976 17744 : bool is_myname(const char *s)
977 : {
978 17744 : const char **aliases = NULL;
979 17744 : bool ok = false;
980 :
981 17744 : ok = nb_name_equal(lp_netbios_name(), s);
982 17744 : if (ok) {
983 1802 : goto done;
984 : }
985 :
986 15942 : aliases = lp_netbios_aliases();
987 15942 : if (aliases == NULL) {
988 14535 : goto done;
989 : }
990 :
991 4113 : while (*aliases != NULL) {
992 2778 : ok = nb_name_equal(*aliases, s);
993 2778 : if (ok) {
994 72 : goto done;
995 : }
996 2706 : aliases += 1;
997 : }
998 :
999 1335 : done:
1000 17744 : DBG_DEBUG("is_myname(\"%s\") returns %d\n", s, (int)ok);
1001 17744 : return ok;
1002 : }
1003 :
1004 : /*******************************************************************
1005 : we distinguish between 2K and XP by the "Native Lan Manager" string
1006 : WinXP => "Windows 2002 5.1"
1007 : WinXP 64bit => "Windows XP 5.2"
1008 : Win2k => "Windows 2000 5.0"
1009 : NT4 => "Windows NT 4.0"
1010 : Win9x => "Windows 4.0"
1011 : Windows 2003 doesn't set the native lan manager string but
1012 : they do set the domain to "Windows 2003 5.2" (probably a bug).
1013 : ********************************************************************/
1014 :
1015 0 : void ra_lanman_string( const char *native_lanman )
1016 : {
1017 0 : if ( strcmp( native_lanman, "Windows 2002 5.1" ) == 0 )
1018 0 : set_remote_arch( RA_WINXP );
1019 0 : else if ( strcmp( native_lanman, "Windows XP 5.2" ) == 0 )
1020 0 : set_remote_arch( RA_WINXP64 );
1021 0 : else if ( strcmp( native_lanman, "Windows Server 2003 5.2" ) == 0 )
1022 0 : set_remote_arch( RA_WIN2K3 );
1023 0 : }
1024 :
1025 : static const char *remote_arch_strings[] = {
1026 : [RA_UNKNOWN] = "UNKNOWN",
1027 : [RA_WFWG] = "WfWg",
1028 : [RA_OS2] = "OS2",
1029 : [RA_WIN95] = "Win95",
1030 : [RA_WINNT] = "WinNT",
1031 : [RA_WIN2K] = "Win2K",
1032 : [RA_WINXP] = "WinXP",
1033 : [RA_WIN2K3] = "Win2K3",
1034 : [RA_VISTA] = "Vista",
1035 : [RA_SAMBA] = "Samba",
1036 : [RA_CIFSFS] = "CIFSFS",
1037 : [RA_WINXP64] = "WinXP64",
1038 : [RA_OSX] = "OSX",
1039 : };
1040 :
1041 17329 : const char *get_remote_arch_str(void)
1042 : {
1043 17329 : if (ra_type >= ARRAY_SIZE(remote_arch_strings)) {
1044 : /*
1045 : * set_remote_arch() already checks this so ra_type
1046 : * should be in the allowed range, but anyway, let's
1047 : * do another bound check here.
1048 : */
1049 0 : DBG_ERR("Remote arch info out of sync [%d] missing\n", ra_type);
1050 0 : ra_type = RA_UNKNOWN;
1051 : }
1052 17329 : return remote_arch_strings[ra_type];
1053 : }
1054 :
1055 710 : enum remote_arch_types get_remote_arch_from_str(const char *remote_arch_string)
1056 : {
1057 2 : int i;
1058 :
1059 6390 : for (i = 0; i < ARRAY_SIZE(remote_arch_strings); i++) {
1060 6390 : if (strcmp(remote_arch_string, remote_arch_strings[i]) == 0) {
1061 710 : return i;
1062 : }
1063 : }
1064 0 : return RA_UNKNOWN;
1065 : }
1066 :
1067 : /*******************************************************************
1068 : Set the horrid remote_arch string based on an enum.
1069 : ********************************************************************/
1070 :
1071 30495 : void set_remote_arch(enum remote_arch_types type)
1072 : {
1073 30495 : if (ra_type >= ARRAY_SIZE(remote_arch_strings)) {
1074 : /*
1075 : * This protects against someone adding values to enum
1076 : * remote_arch_types without updating
1077 : * remote_arch_strings array.
1078 : */
1079 0 : DBG_ERR("Remote arch info out of sync [%d] missing\n", ra_type);
1080 0 : ra_type = RA_UNKNOWN;
1081 0 : return;
1082 : }
1083 :
1084 30495 : ra_type = type;
1085 30495 : DEBUG(10,("set_remote_arch: Client arch is \'%s\'\n",
1086 : get_remote_arch_str()));
1087 : }
1088 :
1089 : /*******************************************************************
1090 : Get the remote_arch type.
1091 : ********************************************************************/
1092 :
1093 2197677 : enum remote_arch_types get_remote_arch(void)
1094 : {
1095 2197677 : return ra_type;
1096 : }
1097 :
1098 : #define RA_CACHE_TTL 7*24*3600
1099 :
1100 26035 : static bool remote_arch_cache_key(const struct GUID *client_guid,
1101 : fstring key)
1102 : {
1103 755 : struct GUID_txt_buf guid_buf;
1104 26035 : const char *guid_string = NULL;
1105 :
1106 26035 : guid_string = GUID_buf_string(client_guid, &guid_buf);
1107 26035 : if (guid_string == NULL) {
1108 0 : return false;
1109 : }
1110 :
1111 26035 : fstr_sprintf(key, "RA/%s", guid_string);
1112 26035 : return true;
1113 : }
1114 :
1115 : struct ra_parser_state {
1116 : bool found;
1117 : enum remote_arch_types ra;
1118 : };
1119 :
1120 710 : static void ra_parser(const struct gencache_timeout *t,
1121 : DATA_BLOB blob,
1122 : void *priv_data)
1123 : {
1124 710 : struct ra_parser_state *state = (struct ra_parser_state *)priv_data;
1125 710 : const char *ra_str = NULL;
1126 :
1127 710 : if (gencache_timeout_expired(t)) {
1128 0 : return;
1129 : }
1130 :
1131 710 : if ((blob.length == 0) || (blob.data[blob.length-1] != '\0')) {
1132 0 : DBG_ERR("Remote arch cache key not a string\n");
1133 0 : return;
1134 : }
1135 :
1136 710 : ra_str = (const char *)blob.data;
1137 710 : DBG_INFO("Got remote arch [%s] from cache\n", ra_str);
1138 :
1139 710 : state->ra = get_remote_arch_from_str(ra_str);
1140 710 : state->found = true;
1141 710 : return;
1142 : }
1143 :
1144 8561 : static bool remote_arch_cache_get(const struct GUID *client_guid)
1145 : {
1146 307 : bool ok;
1147 307 : fstring ra_key;
1148 8561 : struct ra_parser_state state = (struct ra_parser_state) {
1149 : .found = false,
1150 : .ra = RA_UNKNOWN,
1151 : };
1152 :
1153 8561 : ok = remote_arch_cache_key(client_guid, ra_key);
1154 8561 : if (!ok) {
1155 0 : return false;
1156 : }
1157 :
1158 8561 : ok = gencache_parse(ra_key, ra_parser, &state);
1159 8561 : if (!ok || !state.found) {
1160 7546 : return true;
1161 : }
1162 :
1163 710 : if (state.ra == RA_UNKNOWN) {
1164 0 : return true;
1165 : }
1166 :
1167 710 : set_remote_arch(state.ra);
1168 710 : return true;
1169 : }
1170 :
1171 17327 : static bool remote_arch_cache_set(const struct GUID *client_guid)
1172 : {
1173 442 : bool ok;
1174 442 : fstring ra_key;
1175 17327 : const char *ra_str = NULL;
1176 :
1177 17327 : if (get_remote_arch() == RA_UNKNOWN) {
1178 0 : return true;
1179 : }
1180 :
1181 17327 : ok = remote_arch_cache_key(client_guid, ra_key);
1182 17327 : if (!ok) {
1183 0 : return false;
1184 : }
1185 :
1186 17327 : ra_str = get_remote_arch_str();
1187 17327 : if (ra_str == NULL) {
1188 0 : return false;
1189 : }
1190 :
1191 17327 : ok = gencache_set(ra_key, ra_str, time(NULL) + RA_CACHE_TTL);
1192 17327 : if (!ok) {
1193 0 : return false;
1194 : }
1195 :
1196 16885 : return true;
1197 : }
1198 :
1199 25888 : bool remote_arch_cache_update(const struct GUID *client_guid)
1200 : {
1201 749 : bool ok;
1202 :
1203 25888 : if (get_remote_arch() == RA_UNKNOWN) {
1204 :
1205 8561 : become_root();
1206 8561 : ok = remote_arch_cache_get(client_guid);
1207 8561 : unbecome_root();
1208 :
1209 8561 : return ok;
1210 : }
1211 :
1212 17327 : become_root();
1213 17327 : ok = remote_arch_cache_set(client_guid);
1214 17327 : unbecome_root();
1215 :
1216 17327 : return ok;
1217 : }
1218 :
1219 147 : bool remote_arch_cache_delete(const struct GUID *client_guid)
1220 : {
1221 6 : bool ok;
1222 6 : fstring ra_key;
1223 :
1224 147 : ok = remote_arch_cache_key(client_guid, ra_key);
1225 147 : if (!ok) {
1226 0 : return false;
1227 : }
1228 :
1229 147 : become_root();
1230 147 : ok = gencache_del(ra_key);
1231 147 : unbecome_root();
1232 :
1233 147 : if (!ok) {
1234 135 : return false;
1235 : }
1236 :
1237 10 : return true;
1238 : }
1239 :
1240 :
1241 : /*****************************************************************************
1242 : Provide a checksum on a string
1243 :
1244 : Input: s - the null-terminated character string for which the checksum
1245 : will be calculated.
1246 :
1247 : Output: The checksum value calculated for s.
1248 : *****************************************************************************/
1249 :
1250 507 : int str_checksum(const char *s)
1251 : {
1252 0 : TDB_DATA key;
1253 507 : if (s == NULL)
1254 0 : return 0;
1255 :
1256 507 : key = (TDB_DATA) { .dptr = discard_const_p(uint8_t, s),
1257 507 : .dsize = strlen(s) };
1258 :
1259 507 : return tdb_jenkins_hash(&key);
1260 : }
1261 :
1262 : /*****************************************************************
1263 : Zero a memory area then free it. Used to catch bugs faster.
1264 : *****************************************************************/
1265 :
1266 28 : void zero_free(void *p, size_t size)
1267 : {
1268 28 : memset(p, 0, size);
1269 28 : SAFE_FREE(p);
1270 28 : }
1271 :
1272 : /*****************************************************************
1273 : Set our open file limit to a requested max and return the limit.
1274 : *****************************************************************/
1275 :
1276 135 : int set_maxfiles(int requested_max)
1277 : {
1278 : #if (defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE))
1279 0 : struct rlimit rlp;
1280 0 : int saved_current_limit;
1281 :
1282 135 : if(getrlimit(RLIMIT_NOFILE, &rlp)) {
1283 0 : DEBUG(0,("set_maxfiles: getrlimit (1) for RLIMIT_NOFILE failed with error %s\n",
1284 : strerror(errno) ));
1285 : /* just guess... */
1286 0 : return requested_max;
1287 : }
1288 :
1289 : /*
1290 : * Set the fd limit to be real_max_open_files + MAX_OPEN_FUDGEFACTOR to
1291 : * account for the extra fd we need
1292 : * as well as the log files and standard
1293 : * handles etc. Save the limit we want to set in case
1294 : * we are running on an OS that doesn't support this limit (AIX)
1295 : * which always returns RLIM_INFINITY for rlp.rlim_max.
1296 : */
1297 :
1298 : /* Try raising the hard (max) limit to the requested amount. */
1299 :
1300 : #if defined(RLIM_INFINITY)
1301 135 : if (rlp.rlim_max != RLIM_INFINITY) {
1302 135 : int orig_max = rlp.rlim_max;
1303 :
1304 135 : if ( rlp.rlim_max < requested_max )
1305 0 : rlp.rlim_max = requested_max;
1306 :
1307 : /* This failing is not an error - many systems (Linux) don't
1308 : support our default request of 10,000 open files. JRA. */
1309 :
1310 135 : if(setrlimit(RLIMIT_NOFILE, &rlp)) {
1311 0 : DEBUG(3,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d max files failed with error %s\n",
1312 : (int)rlp.rlim_max, strerror(errno) ));
1313 :
1314 : /* Set failed - restore original value from get. */
1315 0 : rlp.rlim_max = orig_max;
1316 : }
1317 : }
1318 : #endif
1319 :
1320 : /* Now try setting the soft (current) limit. */
1321 :
1322 135 : saved_current_limit = rlp.rlim_cur = MIN(requested_max,rlp.rlim_max);
1323 :
1324 135 : if(setrlimit(RLIMIT_NOFILE, &rlp)) {
1325 0 : DEBUG(0,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d files failed with error %s\n",
1326 : (int)rlp.rlim_cur, strerror(errno) ));
1327 : /* just guess... */
1328 0 : return saved_current_limit;
1329 : }
1330 :
1331 135 : if(getrlimit(RLIMIT_NOFILE, &rlp)) {
1332 0 : DEBUG(0,("set_maxfiles: getrlimit (2) for RLIMIT_NOFILE failed with error %s\n",
1333 : strerror(errno) ));
1334 : /* just guess... */
1335 0 : return saved_current_limit;
1336 : }
1337 :
1338 : #if defined(RLIM_INFINITY)
1339 135 : if(rlp.rlim_cur == RLIM_INFINITY)
1340 0 : return saved_current_limit;
1341 : #endif
1342 :
1343 135 : if((int)rlp.rlim_cur > saved_current_limit)
1344 0 : return saved_current_limit;
1345 :
1346 135 : return rlp.rlim_cur;
1347 : #else /* !defined(HAVE_GETRLIMIT) || !defined(RLIMIT_NOFILE) */
1348 : /*
1349 : * No way to know - just guess...
1350 : */
1351 : return requested_max;
1352 : #endif
1353 : }
1354 :
1355 : /*****************************************************************
1356 : malloc that aborts with smb_panic on fail or zero size.
1357 : *****************************************************************/
1358 :
1359 490779 : void *smb_xmalloc_array(size_t size, unsigned int count)
1360 : {
1361 12740 : void *p;
1362 490779 : if (size == 0) {
1363 0 : smb_panic("smb_xmalloc_array: called with zero size");
1364 : }
1365 490779 : if (count >= MAX_ALLOC_SIZE/size) {
1366 0 : smb_panic("smb_xmalloc_array: alloc size too large");
1367 : }
1368 490779 : if ((p = SMB_MALLOC(size*count)) == NULL) {
1369 0 : DEBUG(0, ("smb_xmalloc_array failed to allocate %lu * %lu bytes\n",
1370 : (unsigned long)size, (unsigned long)count));
1371 0 : smb_panic("smb_xmalloc_array: malloc failed");
1372 : }
1373 490779 : return p;
1374 : }
1375 :
1376 : /*****************************************************************
1377 : Get local hostname and cache result.
1378 : *****************************************************************/
1379 :
1380 2 : char *myhostname(void)
1381 : {
1382 0 : static char *ret;
1383 2 : if (ret == NULL) {
1384 2 : ret = get_myname(NULL);
1385 : }
1386 2 : return ret;
1387 : }
1388 :
1389 : /*****************************************************************
1390 : Get local hostname and cache result.
1391 : *****************************************************************/
1392 :
1393 85669 : char *myhostname_upper(void)
1394 : {
1395 211 : static char *ret;
1396 85669 : if (ret == NULL) {
1397 38990 : char *name = get_myname(NULL);
1398 38990 : if (name == NULL) {
1399 0 : return NULL;
1400 : }
1401 38990 : ret = strupper_talloc(NULL, name);
1402 38990 : talloc_free(name);
1403 : }
1404 85669 : return ret;
1405 : }
1406 :
1407 : /*******************************************************************
1408 : Given a filename - get its directory name
1409 : ********************************************************************/
1410 :
1411 11782 : bool parent_dirname(TALLOC_CTX *mem_ctx, const char *dir, char **parent,
1412 : const char **name)
1413 : {
1414 36 : char *p;
1415 36 : ptrdiff_t len;
1416 :
1417 11782 : p = strrchr_m(dir, '/'); /* Find final '/', if any */
1418 :
1419 11782 : if (p == NULL) {
1420 5656 : if (!(*parent = talloc_strdup(mem_ctx, "."))) {
1421 0 : return False;
1422 : }
1423 5656 : if (name) {
1424 5252 : *name = dir;
1425 : }
1426 5656 : return True;
1427 : }
1428 :
1429 6126 : len = p-dir;
1430 :
1431 6126 : *parent = talloc_strndup(mem_ctx, dir, len);
1432 6126 : if (*parent == NULL) {
1433 0 : return False;
1434 : }
1435 :
1436 6126 : if (name) {
1437 4610 : *name = p+1;
1438 : }
1439 6094 : return True;
1440 : }
1441 :
1442 : /*******************************************************************
1443 : Determine if a pattern contains any Microsoft wildcard characters.
1444 : *******************************************************************/
1445 :
1446 1636614 : bool ms_has_wild(const char *s)
1447 : {
1448 1636614 : const char *found = strpbrk(s, "*?<>\"");
1449 1636614 : return (found != NULL);
1450 : }
1451 :
1452 0 : bool ms_has_wild_w(const smb_ucs2_t *s)
1453 : {
1454 0 : smb_ucs2_t c;
1455 0 : if (!s) return False;
1456 0 : while ((c = *s++)) {
1457 0 : switch (c) {
1458 0 : case UCS2_CHAR('*'):
1459 : case UCS2_CHAR('?'):
1460 : case UCS2_CHAR('<'):
1461 : case UCS2_CHAR('>'):
1462 : case UCS2_CHAR('"'):
1463 0 : return True;
1464 : }
1465 : }
1466 0 : return False;
1467 : }
1468 :
1469 : /*******************************************************************
1470 : A wrapper that handles case sensitivity and the special handling
1471 : of the ".." name.
1472 : *******************************************************************/
1473 :
1474 912828 : bool mask_match(const char *string, const char *pattern, bool is_case_sensitive)
1475 : {
1476 912828 : if (ISDOTDOT(string))
1477 18063 : string = ".";
1478 912828 : if (ISDOT(pattern))
1479 72 : return False;
1480 :
1481 912756 : return ms_fnmatch_protocol(pattern, string, Protocol, is_case_sensitive) == 0;
1482 : }
1483 :
1484 : /*******************************************************************
1485 : A wrapper that handles a list of patterns and calls mask_match()
1486 : on each. Returns True if any of the patterns match.
1487 : *******************************************************************/
1488 :
1489 296 : bool mask_match_list(const char *string, char **list, int listLen, bool is_case_sensitive)
1490 : {
1491 752 : while (listLen-- > 0) {
1492 516 : if (mask_match(string, *list++, is_case_sensitive))
1493 60 : return True;
1494 : }
1495 236 : return False;
1496 : }
1497 :
1498 : /**********************************************************************
1499 : Converts a name to a fully qualified domain name.
1500 : Returns true if lookup succeeded, false if not (then fqdn is set to name)
1501 : Uses getaddrinfo() with AI_CANONNAME flag to obtain the official
1502 : canonical name of the host. getaddrinfo() may use a variety of sources
1503 : including /etc/hosts to obtain the domainname. It expects aliases in
1504 : /etc/hosts to NOT be the FQDN. The FQDN should come first.
1505 : ************************************************************************/
1506 :
1507 48 : bool name_to_fqdn(fstring fqdn, const char *name)
1508 : {
1509 48 : char *full = NULL;
1510 0 : struct addrinfo hints;
1511 0 : struct addrinfo *result;
1512 0 : int s;
1513 :
1514 : /* Configure hints to obtain canonical name */
1515 :
1516 48 : memset(&hints, 0, sizeof(struct addrinfo));
1517 48 : hints.ai_family = AF_UNSPEC; /* Allow IPv4 or IPv6 */
1518 48 : hints.ai_socktype = SOCK_DGRAM; /* Datagram socket */
1519 48 : hints.ai_flags = AI_CANONNAME; /* Get host's FQDN */
1520 48 : hints.ai_protocol = 0; /* Any protocol */
1521 :
1522 48 : s = getaddrinfo(name, NULL, &hints, &result);
1523 48 : if (s != 0) {
1524 26 : DBG_WARNING("getaddrinfo lookup for %s failed: %s\n",
1525 : name,
1526 : gai_strerror(s));
1527 26 : fstrcpy(fqdn, name);
1528 26 : return false;
1529 : }
1530 22 : full = result->ai_canonname;
1531 :
1532 : /* Find out if the FQDN is returned as an alias
1533 : * to cope with /etc/hosts files where the first
1534 : * name is not the FQDN but the short name.
1535 : * getaddrinfo provides no easy way of handling aliases
1536 : * in /etc/hosts. Users should make sure the FQDN
1537 : * comes first in /etc/hosts. */
1538 22 : if (full && (! strchr_m(full, '.'))) {
1539 0 : DEBUG(1, ("WARNING: your /etc/hosts file may be broken!\n"));
1540 0 : DEBUGADD(1, (" Full qualified domain names (FQDNs) should not be specified\n"));
1541 0 : DEBUGADD(1, (" as an alias in /etc/hosts. FQDN should be the first name\n"));
1542 0 : DEBUGADD(1, (" prior to any aliases.\n"));
1543 : }
1544 22 : if (full && (strcasecmp_m(full, "localhost.localdomain") == 0)) {
1545 0 : DEBUG(1, ("WARNING: your /etc/hosts file may be broken!\n"));
1546 0 : DEBUGADD(1, (" Specifying the machine hostname for address 127.0.0.1 may lead\n"));
1547 0 : DEBUGADD(1, (" to Kerberos authentication problems as localhost.localdomain\n"));
1548 0 : DEBUGADD(1, (" may end up being used instead of the real machine FQDN.\n"));
1549 : }
1550 :
1551 22 : DEBUG(10,("name_to_fqdn: lookup for %s -> %s.\n", name, full));
1552 22 : fstrcpy(fqdn, full);
1553 22 : freeaddrinfo(result); /* No longer needed */
1554 22 : return true;
1555 : }
1556 :
1557 198 : struct server_id interpret_pid(const char *pid_string)
1558 : {
1559 198 : return server_id_from_string(get_my_vnn(), pid_string);
1560 : }
1561 :
1562 : /****************************************************************
1563 : Check if an offset into a buffer is safe.
1564 : If this returns True it's safe to indirect into the byte at
1565 : pointer ptr+off.
1566 : ****************************************************************/
1567 :
1568 368 : bool is_offset_safe(const char *buf_base, size_t buf_len, char *ptr, size_t off)
1569 : {
1570 368 : const char *end_base = buf_base + buf_len;
1571 368 : char *end_ptr = ptr + off;
1572 :
1573 368 : if (!buf_base || !ptr) {
1574 0 : return False;
1575 : }
1576 :
1577 368 : if (end_base < buf_base || end_ptr < ptr) {
1578 0 : return False; /* wrap. */
1579 : }
1580 :
1581 368 : if (end_ptr < end_base) {
1582 368 : return True;
1583 : }
1584 0 : return False;
1585 : }
1586 :
1587 : /****************************************************************
1588 : Return a safe pointer into a string within a buffer, or NULL.
1589 : ****************************************************************/
1590 :
1591 116 : char *get_safe_str_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
1592 : {
1593 116 : if (!is_offset_safe(buf_base, buf_len, ptr, off)) {
1594 0 : return NULL;
1595 : }
1596 : /* Check if a valid string exists at this offset. */
1597 116 : if (skip_string(buf_base,buf_len, ptr + off) == NULL) {
1598 0 : return NULL;
1599 : }
1600 116 : return ptr + off;
1601 : }
1602 :
1603 :
1604 : /****************************************************************
1605 : Split DOM\user into DOM and user. Do not mix with winbind variants of that
1606 : call (they take care of winbind separator and other winbind specific settings).
1607 : ****************************************************************/
1608 :
1609 114 : bool split_domain_user(TALLOC_CTX *mem_ctx,
1610 : const char *full_name,
1611 : char **domain,
1612 : char **user)
1613 : {
1614 114 : const char *p = NULL;
1615 :
1616 114 : p = strchr_m(full_name, '\\');
1617 :
1618 114 : if (p != NULL) {
1619 0 : *domain = talloc_strndup(mem_ctx, full_name,
1620 0 : PTR_DIFF(p, full_name));
1621 0 : if (*domain == NULL) {
1622 0 : return false;
1623 : }
1624 0 : *user = talloc_strdup(mem_ctx, p+1);
1625 0 : if (*user == NULL) {
1626 0 : TALLOC_FREE(*domain);
1627 0 : return false;
1628 : }
1629 : } else {
1630 114 : *domain = NULL;
1631 114 : *user = talloc_strdup(mem_ctx, full_name);
1632 114 : if (*user == NULL) {
1633 0 : return false;
1634 : }
1635 : }
1636 :
1637 114 : return true;
1638 : }
1639 :
1640 : /****************************************************************
1641 : strip off leading '\\' from a hostname
1642 : ****************************************************************/
1643 :
1644 160 : const char *strip_hostname(const char *s)
1645 : {
1646 160 : if (!s) {
1647 0 : return NULL;
1648 : }
1649 :
1650 160 : if (strlen_m(s) < 3) {
1651 0 : return s;
1652 : }
1653 :
1654 160 : if (s[0] == '\\') s++;
1655 160 : if (s[0] == '\\') s++;
1656 :
1657 160 : return s;
1658 : }
1659 :
1660 125896 : bool any_nt_status_not_ok(NTSTATUS err1, NTSTATUS err2, NTSTATUS *result)
1661 : {
1662 125896 : if (!NT_STATUS_IS_OK(err1)) {
1663 128 : *result = err1;
1664 128 : return true;
1665 : }
1666 125768 : if (!NT_STATUS_IS_OK(err2)) {
1667 1683 : *result = err2;
1668 1683 : return true;
1669 : }
1670 124085 : return false;
1671 : }
1672 :
1673 0 : int timeval_to_msec(struct timeval t)
1674 : {
1675 0 : return t.tv_sec * 1000 + (t.tv_usec+999) / 1000;
1676 : }
1677 :
1678 : /*******************************************************************
1679 : Check a given DOS pathname is valid for a share.
1680 : ********************************************************************/
1681 :
1682 30 : char *valid_share_pathname(TALLOC_CTX *ctx, const char *dos_pathname)
1683 : {
1684 30 : char *ptr = NULL;
1685 :
1686 30 : if (!dos_pathname) {
1687 0 : return NULL;
1688 : }
1689 :
1690 30 : ptr = talloc_strdup(ctx, dos_pathname);
1691 30 : if (!ptr) {
1692 0 : return NULL;
1693 : }
1694 : /* Convert any '\' paths to '/' */
1695 30 : unix_format(ptr);
1696 30 : ptr = unix_clean_name(ctx, ptr);
1697 30 : if (!ptr) {
1698 0 : return NULL;
1699 : }
1700 :
1701 : /* NT is braindead - it wants a C: prefix to a pathname ! So strip it. */
1702 30 : if (strlen(ptr) > 2 && ptr[1] == ':' && ptr[0] != '/')
1703 3 : ptr += 2;
1704 :
1705 : /* Only absolute paths allowed. */
1706 30 : if (*ptr != '/')
1707 0 : return NULL;
1708 :
1709 30 : return ptr;
1710 : }
1711 :
1712 : /*******************************************************************
1713 : Return True if the filename is one of the special executable types.
1714 : ********************************************************************/
1715 :
1716 1767 : bool is_executable(const char *fname)
1717 : {
1718 1767 : if ((fname = strrchr_m(fname,'.'))) {
1719 2852 : if (strequal(fname,".com") ||
1720 2852 : strequal(fname,".dll") ||
1721 2258 : strequal(fname,".exe") ||
1722 832 : strequal(fname,".sym")) {
1723 594 : return True;
1724 : }
1725 : }
1726 1150 : return False;
1727 : }
1728 :
1729 : /****************************************************************************
1730 : Open a file with a share mode - old openX method - map into NTCreate.
1731 : ****************************************************************************/
1732 :
1733 27090 : bool map_open_params_to_ntcreate(const char *smb_base_fname,
1734 : int deny_mode, int open_func,
1735 : uint32_t *paccess_mask,
1736 : uint32_t *pshare_mode,
1737 : uint32_t *pcreate_disposition,
1738 : uint32_t *pcreate_options,
1739 : uint32_t *pprivate_flags)
1740 : {
1741 122 : uint32_t access_mask;
1742 122 : uint32_t share_mode;
1743 122 : uint32_t create_disposition;
1744 27090 : uint32_t create_options = FILE_NON_DIRECTORY_FILE;
1745 27090 : uint32_t private_flags = 0;
1746 :
1747 27090 : DEBUG(10,("map_open_params_to_ntcreate: fname = %s, deny_mode = 0x%x, "
1748 : "open_func = 0x%x\n",
1749 : smb_base_fname, (unsigned int)deny_mode,
1750 : (unsigned int)open_func ));
1751 :
1752 : /* Create the NT compatible access_mask. */
1753 27090 : switch (GET_OPENX_MODE(deny_mode)) {
1754 4593 : case DOS_OPEN_EXEC: /* Implies read-only - used to be FILE_READ_DATA */
1755 : case DOS_OPEN_RDONLY:
1756 4593 : access_mask = FILE_GENERIC_READ;
1757 4593 : break;
1758 2459 : case DOS_OPEN_WRONLY:
1759 2459 : access_mask = FILE_GENERIC_WRITE;
1760 2459 : break;
1761 20022 : case DOS_OPEN_RDWR:
1762 : case DOS_OPEN_FCB:
1763 20022 : access_mask = FILE_GENERIC_READ|FILE_GENERIC_WRITE;
1764 20022 : break;
1765 0 : default:
1766 0 : DEBUG(10,("map_open_params_to_ntcreate: bad open mode = 0x%x\n",
1767 : (unsigned int)GET_OPENX_MODE(deny_mode)));
1768 0 : return False;
1769 : }
1770 :
1771 : /* Create the NT compatible create_disposition. */
1772 27090 : switch (open_func) {
1773 328 : case OPENX_FILE_EXISTS_FAIL|OPENX_FILE_CREATE_IF_NOT_EXIST:
1774 328 : create_disposition = FILE_CREATE;
1775 328 : break;
1776 :
1777 9939 : case OPENX_FILE_EXISTS_OPEN:
1778 9939 : create_disposition = FILE_OPEN;
1779 9939 : break;
1780 :
1781 14552 : case OPENX_FILE_EXISTS_OPEN|OPENX_FILE_CREATE_IF_NOT_EXIST:
1782 14552 : create_disposition = FILE_OPEN_IF;
1783 14552 : break;
1784 :
1785 36 : case OPENX_FILE_EXISTS_TRUNCATE:
1786 36 : create_disposition = FILE_OVERWRITE;
1787 36 : break;
1788 :
1789 2209 : case OPENX_FILE_EXISTS_TRUNCATE|OPENX_FILE_CREATE_IF_NOT_EXIST:
1790 2209 : create_disposition = FILE_OVERWRITE_IF;
1791 2209 : break;
1792 :
1793 15 : default:
1794 : /* From samba4 - to be confirmed. */
1795 15 : if (GET_OPENX_MODE(deny_mode) == DOS_OPEN_EXEC) {
1796 4 : create_disposition = FILE_CREATE;
1797 4 : break;
1798 : }
1799 10 : DEBUG(10,("map_open_params_to_ntcreate: bad "
1800 : "open_func 0x%x\n", (unsigned int)open_func));
1801 8 : return False;
1802 : }
1803 :
1804 : /* Create the NT compatible share modes. */
1805 27080 : switch (GET_DENY_MODE(deny_mode)) {
1806 1740 : case DENY_ALL:
1807 1740 : share_mode = FILE_SHARE_NONE;
1808 1740 : break;
1809 :
1810 1263 : case DENY_WRITE:
1811 1263 : share_mode = FILE_SHARE_READ;
1812 1263 : break;
1813 :
1814 1244 : case DENY_READ:
1815 1244 : share_mode = FILE_SHARE_WRITE;
1816 1244 : break;
1817 :
1818 19926 : case DENY_NONE:
1819 19926 : share_mode = FILE_SHARE_READ|FILE_SHARE_WRITE;
1820 19926 : break;
1821 :
1822 1630 : case DENY_DOS:
1823 1630 : private_flags |= NTCREATEX_FLAG_DENY_DOS;
1824 1630 : if (is_executable(smb_base_fname)) {
1825 534 : share_mode = FILE_SHARE_READ|FILE_SHARE_WRITE;
1826 : } else {
1827 1096 : if (GET_OPENX_MODE(deny_mode) == DOS_OPEN_RDONLY) {
1828 530 : share_mode = FILE_SHARE_READ;
1829 : } else {
1830 564 : share_mode = FILE_SHARE_NONE;
1831 : }
1832 : }
1833 1608 : break;
1834 :
1835 1263 : case DENY_FCB:
1836 1263 : private_flags |= NTCREATEX_FLAG_DENY_FCB;
1837 1263 : share_mode = FILE_SHARE_NONE;
1838 1263 : break;
1839 :
1840 8 : default:
1841 8 : DEBUG(10,("map_open_params_to_ntcreate: bad deny_mode 0x%x\n",
1842 : (unsigned int)GET_DENY_MODE(deny_mode) ));
1843 8 : return False;
1844 : }
1845 :
1846 27072 : DEBUG(10,("map_open_params_to_ntcreate: file %s, access_mask = 0x%x, "
1847 : "share_mode = 0x%x, create_disposition = 0x%x, "
1848 : "create_options = 0x%x private_flags = 0x%x\n",
1849 : smb_base_fname,
1850 : (unsigned int)access_mask,
1851 : (unsigned int)share_mode,
1852 : (unsigned int)create_disposition,
1853 : (unsigned int)create_options,
1854 : (unsigned int)private_flags));
1855 :
1856 27072 : if (paccess_mask) {
1857 27072 : *paccess_mask = access_mask;
1858 : }
1859 27072 : if (pshare_mode) {
1860 27072 : *pshare_mode = share_mode;
1861 : }
1862 27072 : if (pcreate_disposition) {
1863 27072 : *pcreate_disposition = create_disposition;
1864 : }
1865 27072 : if (pcreate_options) {
1866 27072 : *pcreate_options = create_options;
1867 : }
1868 27072 : if (pprivate_flags) {
1869 23386 : *pprivate_flags = private_flags;
1870 : }
1871 :
1872 26952 : return True;
1873 :
1874 : }
1875 :
1876 : /*************************************************************************
1877 : Return a talloced copy of a struct security_unix_token. NULL on fail.
1878 : *************************************************************************/
1879 :
1880 170351 : struct security_unix_token *copy_unix_token(TALLOC_CTX *ctx, const struct security_unix_token *tok)
1881 : {
1882 340 : struct security_unix_token *cpy;
1883 :
1884 170351 : cpy = talloc(ctx, struct security_unix_token);
1885 170351 : if (!cpy) {
1886 0 : return NULL;
1887 : }
1888 :
1889 170351 : cpy->uid = tok->uid;
1890 170351 : cpy->gid = tok->gid;
1891 170351 : cpy->ngroups = tok->ngroups;
1892 170351 : if (tok->ngroups) {
1893 : /* Make this a talloc child of cpy. */
1894 170351 : cpy->groups = (gid_t *)talloc_memdup(
1895 : cpy, tok->groups, tok->ngroups * sizeof(gid_t));
1896 170351 : if (!cpy->groups) {
1897 0 : TALLOC_FREE(cpy);
1898 0 : return NULL;
1899 : }
1900 : } else {
1901 0 : cpy->groups = NULL;
1902 : }
1903 170011 : return cpy;
1904 : }
1905 :
1906 : /****************************************************************************
1907 : Return a root token
1908 : ****************************************************************************/
1909 :
1910 10076 : struct security_unix_token *root_unix_token(TALLOC_CTX *mem_ctx)
1911 : {
1912 10076 : struct security_unix_token *t = NULL;
1913 :
1914 10076 : t = talloc_zero(mem_ctx, struct security_unix_token);
1915 10076 : if (t == NULL) {
1916 0 : return NULL;
1917 : }
1918 :
1919 : /*
1920 : * This is not needed, but lets make it explicit, not implicit.
1921 : */
1922 10076 : *t = (struct security_unix_token) {
1923 : .uid = 0,
1924 : .gid = 0,
1925 : .ngroups = 0,
1926 : .groups = NULL
1927 : };
1928 :
1929 10076 : return t;
1930 : }
1931 :
1932 152 : char *utok_string(TALLOC_CTX *mem_ctx, const struct security_unix_token *tok)
1933 : {
1934 0 : char *str;
1935 0 : uint32_t i;
1936 :
1937 304 : str = talloc_asprintf(
1938 : mem_ctx,
1939 : "uid=%ju, gid=%ju, %"PRIu32" groups:",
1940 152 : (uintmax_t)(tok->uid),
1941 152 : (uintmax_t)(tok->gid),
1942 152 : tok->ngroups);
1943 :
1944 1108 : for (i=0; i<tok->ngroups; i++) {
1945 956 : talloc_asprintf_addbuf(
1946 956 : &str, " %ju", (uintmax_t)tok->groups[i]);
1947 : }
1948 :
1949 152 : return str;
1950 : }
1951 :
1952 : /****************************************************************************
1953 : Check that a file matches a particular file type.
1954 : ****************************************************************************/
1955 :
1956 1005772 : bool dir_check_ftype(uint32_t mode, uint32_t dirtype)
1957 : {
1958 502 : uint32_t mask;
1959 :
1960 : /* Check the "may have" search bits. */
1961 1005772 : if (((mode & ~dirtype) &
1962 : (FILE_ATTRIBUTE_HIDDEN |
1963 : FILE_ATTRIBUTE_SYSTEM |
1964 : FILE_ATTRIBUTE_DIRECTORY)) != 0) {
1965 8444 : return false;
1966 : }
1967 :
1968 : /* Check the "must have" bits,
1969 : which are the may have bits shifted eight */
1970 : /* If must have bit is set, the file/dir can
1971 : not be returned in search unless the matching
1972 : file attribute is set */
1973 997240 : mask = ((dirtype >> 8) & (FILE_ATTRIBUTE_DIRECTORY|
1974 : FILE_ATTRIBUTE_ARCHIVE|
1975 : FILE_ATTRIBUTE_READONLY|
1976 : FILE_ATTRIBUTE_HIDDEN|
1977 : FILE_ATTRIBUTE_SYSTEM)); /* & 0x37 */
1978 997240 : if(mask) {
1979 16016 : if((mask & (mode & (FILE_ATTRIBUTE_DIRECTORY|
1980 : FILE_ATTRIBUTE_ARCHIVE|
1981 : FILE_ATTRIBUTE_READONLY|
1982 : FILE_ATTRIBUTE_HIDDEN|
1983 16016 : FILE_ATTRIBUTE_SYSTEM))) == mask) {
1984 : /* check if matching attribute present */
1985 8008 : return true;
1986 : } else {
1987 8008 : return false;
1988 : }
1989 : }
1990 :
1991 980810 : return true;
1992 : }
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