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r10656: BIG merge from trunk. Features not copied over
[Samba/nascimento.git] / source3 / lib / util.c
bloba5cfe95b660fd931b168bdee55db0a82862aa03e
1 /*
2 Unix SMB/CIFS implementation.
3 Samba utility functions
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Jeremy Allison 2001-2002
6 Copyright (C) Simo Sorce 2001
7 Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 */
23
24 #include "includes.h"
25
26 extern fstring local_machine;
27 extern char *global_clobber_region_function;
28 extern unsigned int global_clobber_region_line;
29 extern fstring remote_arch;
30
31 /* Max allowable allococation - 256mb - 0x10000000 */
32 #define MAX_ALLOC_SIZE (1024*1024*256)
33
34 #if (defined(HAVE_NETGROUP) && defined (WITH_AUTOMOUNT))
35 #ifdef WITH_NISPLUS_HOME
36 #ifdef BROKEN_NISPLUS_INCLUDE_FILES
37 /*
38 * The following lines are needed due to buggy include files
39 * in Solaris 2.6 which define GROUP in both /usr/include/sys/acl.h and
40 * also in /usr/include/rpcsvc/nis.h. The definitions conflict. JRA.
41 * Also GROUP_OBJ is defined as 0x4 in /usr/include/sys/acl.h and as
42 * an enum in /usr/include/rpcsvc/nis.h.
43 */
44
45 #if defined(GROUP)
46 #undef GROUP
47 #endif
48
49 #if defined(GROUP_OBJ)
50 #undef GROUP_OBJ
51 #endif
52
53 #endif /* BROKEN_NISPLUS_INCLUDE_FILES */
54
55 #include <rpcsvc/nis.h>
56
57 #endif /* WITH_NISPLUS_HOME */
58 #endif /* HAVE_NETGROUP && WITH_AUTOMOUNT */
59
60 enum protocol_types Protocol = PROTOCOL_COREPLUS;
61
62 /* a default finfo structure to ensure all fields are sensible */
63 file_info def_finfo = {-1,0,0,0,0,0,0,"",""};
64
65 /* this is used by the chaining code */
66 int chain_size = 0;
67
68 int trans_num = 0;
69
70 static enum remote_arch_types ra_type = RA_UNKNOWN;
71 pstring user_socket_options=DEFAULT_SOCKET_OPTIONS;
72
73 /***********************************************************************
74 Definitions for all names.
75 ***********************************************************************/
76
77 static char *smb_myname;
78 static char *smb_myworkgroup;
79 static char *smb_scope;
80 static int smb_num_netbios_names;
81 static char **smb_my_netbios_names;
82
83 /***********************************************************************
84 Allocate and set myname. Ensure upper case.
85 ***********************************************************************/
86
87 BOOL set_global_myname(const char *myname)
88 {
89 SAFE_FREE(smb_myname);
90 smb_myname = SMB_STRDUP(myname);
91 if (!smb_myname)
92 return False;
93 strupper_m(smb_myname);
94 return True;
95 }
96
97 const char *global_myname(void)
98 {
99 return smb_myname;
100 }
101
102 /***********************************************************************
103 Allocate and set myworkgroup. Ensure upper case.
104 ***********************************************************************/
105
106 BOOL set_global_myworkgroup(const char *myworkgroup)
107 {
108 SAFE_FREE(smb_myworkgroup);
109 smb_myworkgroup = SMB_STRDUP(myworkgroup);
110 if (!smb_myworkgroup)
111 return False;
112 strupper_m(smb_myworkgroup);
113 return True;
114 }
115
116 const char *lp_workgroup(void)
117 {
118 return smb_myworkgroup;
119 }
120
121 /***********************************************************************
122 Allocate and set scope. Ensure upper case.
123 ***********************************************************************/
124
125 BOOL set_global_scope(const char *scope)
126 {
127 SAFE_FREE(smb_scope);
128 smb_scope = SMB_STRDUP(scope);
129 if (!smb_scope)
130 return False;
131 strupper_m(smb_scope);
132 return True;
133 }
134
135 /*********************************************************************
136 Ensure scope is never null string.
137 *********************************************************************/
138
139 const char *global_scope(void)
140 {
141 if (!smb_scope)
142 set_global_scope("");
143 return smb_scope;
144 }
145
146 static void free_netbios_names_array(void)
147 {
148 int i;
149
150 for (i = 0; i < smb_num_netbios_names; i++)
151 SAFE_FREE(smb_my_netbios_names[i]);
152
153 SAFE_FREE(smb_my_netbios_names);
154 smb_num_netbios_names = 0;
155 }
156
157 static BOOL allocate_my_netbios_names_array(size_t number)
158 {
159 free_netbios_names_array();
160
161 smb_num_netbios_names = number + 1;
162 smb_my_netbios_names = SMB_MALLOC_ARRAY( char *, smb_num_netbios_names );
163
164 if (!smb_my_netbios_names)
165 return False;
166
167 memset(smb_my_netbios_names, '\0', sizeof(char *) * smb_num_netbios_names);
168 return True;
169 }
170
171 static BOOL set_my_netbios_names(const char *name, int i)
172 {
173 SAFE_FREE(smb_my_netbios_names[i]);
174
175 smb_my_netbios_names[i] = SMB_STRDUP(name);
176 if (!smb_my_netbios_names[i])
177 return False;
178 strupper_m(smb_my_netbios_names[i]);
179 return True;
180 }
181
182 const char *my_netbios_names(int i)
183 {
184 return smb_my_netbios_names[i];
185 }
186
187 BOOL set_netbios_aliases(const char **str_array)
188 {
189 size_t namecount;
190
191 /* Work out the max number of netbios aliases that we have */
192 for( namecount=0; str_array && (str_array[namecount] != NULL); namecount++ )
193 ;
194
195 if ( global_myname() && *global_myname())
196 namecount++;
197
198 /* Allocate space for the netbios aliases */
199 if (!allocate_my_netbios_names_array(namecount))
200 return False;
201
202 /* Use the global_myname string first */
203 namecount=0;
204 if ( global_myname() && *global_myname()) {
205 set_my_netbios_names( global_myname(), namecount );
206 namecount++;
207 }
208
209 if (str_array) {
210 size_t i;
211 for ( i = 0; str_array[i] != NULL; i++) {
212 size_t n;
213 BOOL duplicate = False;
214
215 /* Look for duplicates */
216 for( n=0; n<namecount; n++ ) {
217 if( strequal( str_array[i], my_netbios_names(n) ) ) {
218 duplicate = True;
219 break;
220 }
221 }
222 if (!duplicate) {
223 if (!set_my_netbios_names(str_array[i], namecount))
224 return False;
225 namecount++;
226 }
227 }
228 }
229 return True;
230 }
231
232 /****************************************************************************
233 Common name initialization code.
234 ****************************************************************************/
235
236 BOOL init_names(void)
237 {
238 char *p;
239 int n;
240
241 if (global_myname() == NULL || *global_myname() == '\0') {
242 if (!set_global_myname(myhostname())) {
243 DEBUG( 0, ( "init_structs: malloc fail.\n" ) );
244 return False;
245 }
246 }
247
248 if (!set_netbios_aliases(lp_netbios_aliases())) {
249 DEBUG( 0, ( "init_structs: malloc fail.\n" ) );
250 return False;
251 }
252
253 fstrcpy( local_machine, global_myname() );
254 trim_char( local_machine, ' ', ' ' );
255 p = strchr( local_machine, ' ' );
256 if (p)
257 *p = 0;
258 strlower_m( local_machine );
259
260 DEBUG( 5, ("Netbios name list:-\n") );
261 for( n=0; my_netbios_names(n); n++ )
262 DEBUGADD( 5, ( "my_netbios_names[%d]=\"%s\"\n", n, my_netbios_names(n) ) );
263
264 return( True );
265 }
266
267 /**************************************************************************n
268 Find a suitable temporary directory. The result should be copied immediately
269 as it may be overwritten by a subsequent call.
270 ****************************************************************************/
271
272 const char *tmpdir(void)
273 {
274 char *p;
275 if ((p = getenv("TMPDIR")))
276 return p;
277 return "/tmp";
278 }
279
280 /****************************************************************************
281 Add a gid to an array of gids if it's not already there.
282 ****************************************************************************/
283
284 void add_gid_to_array_unique(TALLOC_CTX *mem_ctx, gid_t gid,
285 gid_t **gids, int *num)
286 {
287 int i;
288
289 for (i=0; i<*num; i++) {
290 if ((*gids)[i] == gid)
291 return;
292 }
293
294 if (mem_ctx != NULL)
295 *gids = TALLOC_REALLOC_ARRAY(mem_ctx, *gids, gid_t, *num+1);
296 else
297 *gids = SMB_REALLOC_ARRAY(*gids, gid_t, *num+1);
298
299 if (*gids == NULL)
300 return;
301
302 (*gids)[*num] = gid;
303 *num += 1;
304 }
305
306 /****************************************************************************
307 Like atoi but gets the value up to the separator character.
308 ****************************************************************************/
309
310 static const char *Atoic(const char *p, int *n, const char *c)
311 {
312 if (!isdigit((int)*p)) {
313 DEBUG(5, ("Atoic: malformed number\n"));
314 return NULL;
315 }
316
317 (*n) = atoi(p);
318
319 while ((*p) && isdigit((int)*p))
320 p++;
321
322 if (strchr_m(c, *p) == NULL) {
323 DEBUG(5, ("Atoic: no separator characters (%s) not found\n", c));
324 return NULL;
325 }
326
327 return p;
328 }
329
330 /*************************************************************************
331 Reads a list of numbers.
332 *************************************************************************/
333
334 const char *get_numlist(const char *p, uint32 **num, int *count)
335 {
336 int val;
337
338 if (num == NULL || count == NULL)
339 return NULL;
340
341 (*count) = 0;
342 (*num ) = NULL;
343
344 while ((p = Atoic(p, &val, ":,")) != NULL && (*p) != ':') {
345 uint32 *tn;
346
347 tn = SMB_REALLOC_ARRAY((*num), uint32, (*count)+1);
348 if (tn == NULL) {
349 SAFE_FREE(*num);
350 return NULL;
351 } else
352 (*num) = tn;
353 (*num)[(*count)] = val;
354 (*count)++;
355 p++;
356 }
357
358 return p;
359 }
360
361 /*******************************************************************
362 Check if a file exists - call vfs_file_exist for samba files.
363 ********************************************************************/
364
365 BOOL file_exist(const char *fname,SMB_STRUCT_STAT *sbuf)
366 {
367 SMB_STRUCT_STAT st;
368 if (!sbuf)
369 sbuf = &st;
370
371 if (sys_stat(fname,sbuf) != 0)
372 return(False);
373
374 return((S_ISREG(sbuf->st_mode)) || (S_ISFIFO(sbuf->st_mode)));
375 }
376
377 /*******************************************************************
378 Check a files mod time.
379 ********************************************************************/
380
381 time_t file_modtime(const char *fname)
382 {
383 SMB_STRUCT_STAT st;
384
385 if (sys_stat(fname,&st) != 0)
386 return(0);
387
388 return(st.st_mtime);
389 }
390
391 /*******************************************************************
392 Check if a directory exists.
393 ********************************************************************/
394
395 BOOL directory_exist(char *dname,SMB_STRUCT_STAT *st)
396 {
397 SMB_STRUCT_STAT st2;
398 BOOL ret;
399
400 if (!st)
401 st = &st2;
402
403 if (sys_stat(dname,st) != 0)
404 return(False);
405
406 ret = S_ISDIR(st->st_mode);
407 if(!ret)
408 errno = ENOTDIR;
409 return ret;
410 }
411
412 /*******************************************************************
413 Returns the size in bytes of the named file.
414 ********************************************************************/
415
416 SMB_OFF_T get_file_size(char *file_name)
417 {
418 SMB_STRUCT_STAT buf;
419 buf.st_size = 0;
420 if(sys_stat(file_name,&buf) != 0)
421 return (SMB_OFF_T)-1;
422 return(buf.st_size);
423 }
424
425 /*******************************************************************
426 Return a string representing an attribute for a file.
427 ********************************************************************/
428
429 char *attrib_string(uint16 mode)
430 {
431 static fstring attrstr;
432
433 attrstr[0] = 0;
434
435 if (mode & aVOLID) fstrcat(attrstr,"V");
436 if (mode & aDIR) fstrcat(attrstr,"D");
437 if (mode & aARCH) fstrcat(attrstr,"A");
438 if (mode & aHIDDEN) fstrcat(attrstr,"H");
439 if (mode & aSYSTEM) fstrcat(attrstr,"S");
440 if (mode & aRONLY) fstrcat(attrstr,"R");
441
442 return(attrstr);
443 }
444
445 /*******************************************************************
446 Show a smb message structure.
447 ********************************************************************/
448
449 void show_msg(char *buf)
450 {
451 int i;
452 int bcc=0;
453
454 if (!DEBUGLVL(5))
455 return;
456
457 DEBUG(5,("size=%d\nsmb_com=0x%x\nsmb_rcls=%d\nsmb_reh=%d\nsmb_err=%d\nsmb_flg=%d\nsmb_flg2=%d\n",
458 smb_len(buf),
459 (int)CVAL(buf,smb_com),
460 (int)CVAL(buf,smb_rcls),
461 (int)CVAL(buf,smb_reh),
462 (int)SVAL(buf,smb_err),
463 (int)CVAL(buf,smb_flg),
464 (int)SVAL(buf,smb_flg2)));
465 DEBUGADD(5,("smb_tid=%d\nsmb_pid=%d\nsmb_uid=%d\nsmb_mid=%d\n",
466 (int)SVAL(buf,smb_tid),
467 (int)SVAL(buf,smb_pid),
468 (int)SVAL(buf,smb_uid),
469 (int)SVAL(buf,smb_mid)));
470 DEBUGADD(5,("smt_wct=%d\n",(int)CVAL(buf,smb_wct)));
471
472 for (i=0;i<(int)CVAL(buf,smb_wct);i++)
473 DEBUGADD(5,("smb_vwv[%2d]=%5d (0x%X)\n",i,
474 SVAL(buf,smb_vwv+2*i),SVAL(buf,smb_vwv+2*i)));
475
476 bcc = (int)SVAL(buf,smb_vwv+2*(CVAL(buf,smb_wct)));
477
478 DEBUGADD(5,("smb_bcc=%d\n",bcc));
479
480 if (DEBUGLEVEL < 10)
481 return;
482
483 if (DEBUGLEVEL < 50)
484 bcc = MIN(bcc, 512);
485
486 dump_data(10, smb_buf(buf), bcc);
487 }
488
489 /*******************************************************************
490 Set the length and marker of an smb packet.
491 ********************************************************************/
492
493 void smb_setlen(char *buf,int len)
494 {
495 _smb_setlen(buf,len);
496
497 SCVAL(buf,4,0xFF);
498 SCVAL(buf,5,'S');
499 SCVAL(buf,6,'M');
500 SCVAL(buf,7,'B');
501 }
502
503 /*******************************************************************
504 Setup the word count and byte count for a smb message.
505 ********************************************************************/
506
507 int set_message(char *buf,int num_words,int num_bytes,BOOL zero)
508 {
509 if (zero)
510 memset(buf + smb_size,'\0',num_words*2 + num_bytes);
511 SCVAL(buf,smb_wct,num_words);
512 SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes);
513 smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4);
514 return (smb_size + num_words*2 + num_bytes);
515 }
516
517 /*******************************************************************
518 Setup only the byte count for a smb message.
519 ********************************************************************/
520
521 int set_message_bcc(char *buf,int num_bytes)
522 {
523 int num_words = CVAL(buf,smb_wct);
524 SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes);
525 smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4);
526 return (smb_size + num_words*2 + num_bytes);
527 }
528
529 /*******************************************************************
530 Setup only the byte count for a smb message, using the end of the
531 message as a marker.
532 ********************************************************************/
533
534 int set_message_end(void *outbuf,void *end_ptr)
535 {
536 return set_message_bcc((char *)outbuf,PTR_DIFF(end_ptr,smb_buf((char *)outbuf)));
537 }
538
539 /*******************************************************************
540 Reduce a file name, removing .. elements.
541 ********************************************************************/
542
543 void dos_clean_name(char *s)
544 {
545 char *p=NULL;
546
547 DEBUG(3,("dos_clean_name [%s]\n",s));
548
549 /* remove any double slashes */
550 all_string_sub(s, "\\\\", "\\", 0);
551
552 while ((p = strstr_m(s,"\\..\\")) != NULL) {
553 pstring s1;
554
555 *p = 0;
556 pstrcpy(s1,p+3);
557
558 if ((p=strrchr_m(s,'\\')) != NULL)
559 *p = 0;
560 else
561 *s = 0;
562 pstrcat(s,s1);
563 }
564
565 trim_string(s,NULL,"\\..");
566
567 all_string_sub(s, "\\.\\", "\\", 0);
568 }
569
570 /*******************************************************************
571 Reduce a file name, removing .. elements.
572 ********************************************************************/
573
574 void unix_clean_name(char *s)
575 {
576 char *p=NULL;
577
578 DEBUG(3,("unix_clean_name [%s]\n",s));
579
580 /* remove any double slashes */
581 all_string_sub(s, "//","/", 0);
582
583 /* Remove leading ./ characters */
584 if(strncmp(s, "./", 2) == 0) {
585 trim_string(s, "./", NULL);
586 if(*s == 0)
587 pstrcpy(s,"./");
588 }
589
590 while ((p = strstr_m(s,"/../")) != NULL) {
591 pstring s1;
592
593 *p = 0;
594 pstrcpy(s1,p+3);
595
596 if ((p=strrchr_m(s,'/')) != NULL)
597 *p = 0;
598 else
599 *s = 0;
600 pstrcat(s,s1);
601 }
602
603 trim_string(s,NULL,"/..");
604 }
605
606 /*******************************************************************
607 Close the low 3 fd's and open dev/null in their place.
608 ********************************************************************/
609
610 void close_low_fds(BOOL stderr_too)
611 {
612 #ifndef VALGRIND
613 int fd;
614 int i;
615
616 close(0);
617 close(1);
618
619 if (stderr_too)
620 close(2);
621
622 /* try and use up these file descriptors, so silly
623 library routines writing to stdout etc won't cause havoc */
624 for (i=0;i<3;i++) {
625 if (i == 2 && !stderr_too)
626 continue;
627
628 fd = sys_open("/dev/null",O_RDWR,0);
629 if (fd < 0)
630 fd = sys_open("/dev/null",O_WRONLY,0);
631 if (fd < 0) {
632 DEBUG(0,("Can't open /dev/null\n"));
633 return;
634 }
635 if (fd != i) {
636 DEBUG(0,("Didn't get file descriptor %d\n",i));
637 return;
638 }
639 }
640 #endif
641 }
642
643 /*******************************************************************
644 Write data into an fd at a given offset. Ignore seek errors.
645 ********************************************************************/
646
647 ssize_t write_data_at_offset(int fd, const char *buffer, size_t N, SMB_OFF_T pos)
648 {
649 size_t total=0;
650 ssize_t ret;
651
652 if (pos == (SMB_OFF_T)-1) {
653 return write_data(fd, buffer, N);
654 }
655 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
656 while (total < N) {
657 ret = sys_pwrite(fd,buffer + total,N - total, pos);
658 if (ret == -1 && errno == ESPIPE) {
659 return write_data(fd, buffer + total,N - total);
660 }
661 if (ret == -1) {
662 DEBUG(0,("write_data_at_offset: write failure. Error = %s\n", strerror(errno) ));
663 return -1;
664 }
665 if (ret == 0) {
666 return total;
667 }
668 total += ret;
669 pos += ret;
670 }
671 return (ssize_t)total;
672 #else
673 /* Use lseek and write_data. */
674 if (sys_lseek(fd, pos, SEEK_SET) == -1) {
675 if (errno != ESPIPE) {
676 return -1;
677 }
678 }
679 return write_data(fd, buffer, N);
680 #endif
681 }
682
683 /****************************************************************************
684 Set a fd into blocking/nonblocking mode. Uses POSIX O_NONBLOCK if available,
685 else
686 if SYSV use O_NDELAY
687 if BSD use FNDELAY
688 ****************************************************************************/
689
690 int set_blocking(int fd, BOOL set)
691 {
692 int val;
693 #ifdef O_NONBLOCK
694 #define FLAG_TO_SET O_NONBLOCK
695 #else
696 #ifdef SYSV
697 #define FLAG_TO_SET O_NDELAY
698 #else /* BSD */
699 #define FLAG_TO_SET FNDELAY
700 #endif
701 #endif
702
703 if((val = sys_fcntl_long(fd, F_GETFL, 0)) == -1)
704 return -1;
705 if(set) /* Turn blocking on - ie. clear nonblock flag */
706 val &= ~FLAG_TO_SET;
707 else
708 val |= FLAG_TO_SET;
709 return sys_fcntl_long( fd, F_SETFL, val);
710 #undef FLAG_TO_SET
711 }
712
713 /****************************************************************************
714 Transfer some data between two fd's.
715 ****************************************************************************/
716
717 #ifndef TRANSFER_BUF_SIZE
718 #define TRANSFER_BUF_SIZE 65536
719 #endif
720
721 ssize_t transfer_file_internal(int infd, int outfd, size_t n, ssize_t (*read_fn)(int, void *, size_t),
722 ssize_t (*write_fn)(int, const void *, size_t))
723 {
724 char *buf;
725 size_t total = 0;
726 ssize_t read_ret;
727 ssize_t write_ret;
728 size_t num_to_read_thistime;
729 size_t num_written = 0;
730
731 if ((buf = SMB_MALLOC(TRANSFER_BUF_SIZE)) == NULL)
732 return -1;
733
734 while (total < n) {
735 num_to_read_thistime = MIN((n - total), TRANSFER_BUF_SIZE);
736
737 read_ret = (*read_fn)(infd, buf, num_to_read_thistime);
738 if (read_ret == -1) {
739 DEBUG(0,("transfer_file_internal: read failure. Error = %s\n", strerror(errno) ));
740 SAFE_FREE(buf);
741 return -1;
742 }
743 if (read_ret == 0)
744 break;
745
746 num_written = 0;
747
748 while (num_written < read_ret) {
749 write_ret = (*write_fn)(outfd,buf + num_written, read_ret - num_written);
750
751 if (write_ret == -1) {
752 DEBUG(0,("transfer_file_internal: write failure. Error = %s\n", strerror(errno) ));
753 SAFE_FREE(buf);
754 return -1;
755 }
756 if (write_ret == 0)
757 return (ssize_t)total;
758
759 num_written += (size_t)write_ret;
760 }
761
762 total += (size_t)read_ret;
763 }
764
765 SAFE_FREE(buf);
766 return (ssize_t)total;
767 }
768
769 SMB_OFF_T transfer_file(int infd,int outfd,SMB_OFF_T n)
770 {
771 return (SMB_OFF_T)transfer_file_internal(infd, outfd, (size_t)n, sys_read, sys_write);
772 }
773
774 /*******************************************************************
775 Sleep for a specified number of milliseconds.
776 ********************************************************************/
777
778 void smb_msleep(unsigned int t)
779 {
780 #if defined(HAVE_NANOSLEEP)
781 struct timespec tval;
782 int ret;
783
784 tval.tv_sec = t/1000;
785 tval.tv_nsec = 1000000*(t%1000);
786
787 do {
788 errno = 0;
789 ret = nanosleep(&tval, &tval);
790 } while (ret < 0 && errno == EINTR && (tval.tv_sec > 0 || tval.tv_nsec > 0));
791 #else
792 unsigned int tdiff=0;
793 struct timeval tval,t1,t2;
794 fd_set fds;
795
796 GetTimeOfDay(&t1);
797 t2 = t1;
798
799 while (tdiff < t) {
800 tval.tv_sec = (t-tdiff)/1000;
801 tval.tv_usec = 1000*((t-tdiff)%1000);
802
803 /* Never wait for more than 1 sec. */
804 if (tval.tv_sec > 1) {
805 tval.tv_sec = 1;
806 tval.tv_usec = 0;
807 }
808
809 FD_ZERO(&fds);
810 errno = 0;
811 sys_select_intr(0,&fds,NULL,NULL,&tval);
812
813 GetTimeOfDay(&t2);
814 if (t2.tv_sec < t1.tv_sec) {
815 /* Someone adjusted time... */
816 t1 = t2;
817 }
818
819 tdiff = TvalDiff(&t1,&t2);
820 }
821 #endif
822 }
823
824 /****************************************************************************
825 Become a daemon, discarding the controlling terminal.
826 ****************************************************************************/
827
828 void become_daemon(BOOL Fork)
829 {
830 if (Fork) {
831 if (sys_fork()) {
832 _exit(0);
833 }
834 }
835
836 /* detach from the terminal */
837 #ifdef HAVE_SETSID
838 setsid();
839 #elif defined(TIOCNOTTY)
840 {
841 int i = sys_open("/dev/tty", O_RDWR, 0);
842 if (i != -1) {
843 ioctl(i, (int) TIOCNOTTY, (char *)0);
844 close(i);
845 }
846 }
847 #endif /* HAVE_SETSID */
848
849 /* Close fd's 0,1,2. Needed if started by rsh */
850 close_low_fds(False); /* Don't close stderr, let the debug system
851 attach it to the logfile */
852 }
853
854 /****************************************************************************
855 Put up a yes/no prompt.
856 ****************************************************************************/
857
858 BOOL yesno(char *p)
859 {
860 pstring ans;
861 printf("%s",p);
862
863 if (!fgets(ans,sizeof(ans)-1,stdin))
864 return(False);
865
866 if (*ans == 'y' || *ans == 'Y')
867 return(True);
868
869 return(False);
870 }
871
872 #if defined(PARANOID_MALLOC_CHECKER)
873
874 /****************************************************************************
875 Internal malloc wrapper. Externally visible.
876 ****************************************************************************/
877
878 void *malloc_(size_t size)
879 {
880 #undef malloc
881 return malloc(size);
882 #define malloc(s) __ERROR_DONT_USE_MALLOC_DIRECTLY
883 }
884
885 /****************************************************************************
886 Internal calloc wrapper. Not externally visible.
887 ****************************************************************************/
888
889 static void *calloc_(size_t count, size_t size)
890 {
891 #undef calloc
892 return calloc(count, size);
893 #define calloc(n,s) __ERROR_DONT_USE_CALLOC_DIRECTLY
894 }
895
896 /****************************************************************************
897 Internal realloc wrapper. Not externally visible.
898 ****************************************************************************/
899
900 static void *realloc_(void *ptr, size_t size)
901 {
902 #undef realloc
903 return realloc(ptr, size);
904 #define realloc(p,s) __ERROR_DONT_USE_RELLOC_DIRECTLY
905 }
906
907 #endif /* PARANOID_MALLOC_CHECKER */
908
909 /****************************************************************************
910 Type-safe malloc.
911 ****************************************************************************/
912
913 void *malloc_array(size_t el_size, unsigned int count)
914 {
915 if (count >= MAX_ALLOC_SIZE/el_size) {
916 return NULL;
917 }
918
919 #if defined(PARANOID_MALLOC_CHECKER)
920 return malloc_(el_size*count);
921 #else
922 return malloc(el_size*count);
923 #endif
924 }
925
926 /****************************************************************************
927 Type-safe calloc.
928 ****************************************************************************/
929
930 void *calloc_array(size_t size, size_t nmemb)
931 {
932 if (nmemb >= MAX_ALLOC_SIZE/size) {
933 return NULL;
934 }
935 #if defined(PARANOID_MALLOC_CHECKER)
936 return calloc_(nmemb, size);
937 #else
938 return calloc(nmemb, size);
939 #endif
940 }
941
942 /****************************************************************************
943 Expand a pointer to be a particular size.
944 ****************************************************************************/
945
946 void *Realloc(void *p,size_t size)
947 {
948 void *ret=NULL;
949
950 if (size == 0) {
951 SAFE_FREE(p);
952 DEBUG(5,("Realloc asked for 0 bytes\n"));
953 return NULL;
954 }
955
956 #if defined(PARANOID_MALLOC_CHECKER)
957 if (!p)
958 ret = (void *)malloc_(size);
959 else
960 ret = (void *)realloc_(p,size);
961 #else
962 if (!p)
963 ret = (void *)malloc(size);
964 else
965 ret = (void *)realloc(p,size);
966 #endif
967
968 if (!ret)
969 DEBUG(0,("Memory allocation error: failed to expand to %d bytes\n",(int)size));
970
971 return(ret);
972 }
973
974 /****************************************************************************
975 Type-safe realloc.
976 ****************************************************************************/
977
978 void *realloc_array(void *p,size_t el_size, unsigned int count)
979 {
980 if (count >= MAX_ALLOC_SIZE/el_size) {
981 return NULL;
982 }
983 return Realloc(p,el_size*count);
984 }
985
986 /****************************************************************************
987 (Hopefully) efficient array append
988 ****************************************************************************/
989 void add_to_large_array(TALLOC_CTX *mem_ctx, size_t element_size,
990 void *element, void **array, uint32 *num_elements,
991 ssize_t *array_size)
992 {
993 if (*array_size < 0)
994 return;
995
996 if (*array == NULL) {
997 if (*array_size == 0) {
998 *array_size = 128;
999 }
1000
1001 if (*array_size >= MAX_ALLOC_SIZE/element_size) {
1002 goto error;
1003 }
1004
1005 if (mem_ctx != NULL)
1006 *array = TALLOC(mem_ctx, element_size * (*array_size));
1007 else
1008 *array = SMB_MALLOC(element_size * (*array_size));
1009
1010 if (*array == NULL)
1011 goto error;
1012 }
1013
1014 if (*num_elements == *array_size) {
1015 *array_size *= 2;
1016
1017 if (*array_size >= MAX_ALLOC_SIZE/element_size) {
1018 goto error;
1019 }
1020
1021 if (mem_ctx != NULL)
1022 *array = TALLOC_REALLOC(mem_ctx, *array,
1023 element_size * (*array_size));
1024 else
1025 *array = SMB_REALLOC(*array,
1026 element_size * (*array_size));
1027
1028 if (*array == NULL)
1029 goto error;
1030 }
1031
1032 memcpy((char *)(*array) + element_size*(*num_elements),
1033 element, element_size);
1034 *num_elements += 1;
1035
1036 return;
1037
1038 error:
1039 *num_elements = 0;
1040 *array_size = -1;
1041 }
1042
1043 /****************************************************************************
1044 Free memory, checks for NULL.
1045 Use directly SAFE_FREE()
1046 Exists only because we need to pass a function pointer somewhere --SSS
1047 ****************************************************************************/
1048
1049 void safe_free(void *p)
1050 {
1051 SAFE_FREE(p);
1052 }
1053
1054 /****************************************************************************
1055 Get my own name and IP.
1056 ****************************************************************************/
1057
1058 BOOL get_myname(char *my_name)
1059 {
1060 pstring hostname;
1061
1062 *hostname = 0;
1063
1064 /* get my host name */
1065 if (gethostname(hostname, sizeof(hostname)) == -1) {
1066 DEBUG(0,("gethostname failed\n"));
1067 return False;
1068 }
1069
1070 /* Ensure null termination. */
1071 hostname[sizeof(hostname)-1] = '\0';
1072
1073 if (my_name) {
1074 /* split off any parts after an initial . */
1075 char *p = strchr_m(hostname,'.');
1076
1077 if (p)
1078 *p = 0;
1079
1080 fstrcpy(my_name,hostname);
1081 }
1082
1083 return(True);
1084 }
1085
1086 /****************************************************************************
1087 Get my own canonical name, including domain.
1088 ****************************************************************************/
1089
1090 BOOL get_mydnsfullname(fstring my_dnsname)
1091 {
1092 static fstring dnshostname;
1093 struct hostent *hp;
1094
1095 if (!*dnshostname) {
1096 /* get my host name */
1097 if (gethostname(dnshostname, sizeof(dnshostname)) == -1) {
1098 *dnshostname = '\0';
1099 DEBUG(0,("gethostname failed\n"));
1100 return False;
1101 }
1102
1103 /* Ensure null termination. */
1104 dnshostname[sizeof(dnshostname)-1] = '\0';
1105
1106 /* Ensure we get the cannonical name. */
1107 if (!(hp = sys_gethostbyname(dnshostname))) {
1108 *dnshostname = '\0';
1109 return False;
1110 }
1111 fstrcpy(dnshostname, hp->h_name);
1112 }
1113 fstrcpy(my_dnsname, dnshostname);
1114 return True;
1115 }
1116
1117 /****************************************************************************
1118 Get my own domain name.
1119 ****************************************************************************/
1120
1121 BOOL get_mydnsdomname(fstring my_domname)
1122 {
1123 fstring domname;
1124 char *p;
1125
1126 *my_domname = '\0';
1127 if (!get_mydnsfullname(domname)) {
1128 return False;
1129 }
1130 p = strchr_m(domname, '.');
1131 if (p) {
1132 p++;
1133 fstrcpy(my_domname, p);
1134 }
1135
1136 return False;
1137 }
1138
1139 /****************************************************************************
1140 Interpret a protocol description string, with a default.
1141 ****************************************************************************/
1142
1143 int interpret_protocol(const char *str,int def)
1144 {
1145 if (strequal(str,"NT1"))
1146 return(PROTOCOL_NT1);
1147 if (strequal(str,"LANMAN2"))
1148 return(PROTOCOL_LANMAN2);
1149 if (strequal(str,"LANMAN1"))
1150 return(PROTOCOL_LANMAN1);
1151 if (strequal(str,"CORE"))
1152 return(PROTOCOL_CORE);
1153 if (strequal(str,"COREPLUS"))
1154 return(PROTOCOL_COREPLUS);
1155 if (strequal(str,"CORE+"))
1156 return(PROTOCOL_COREPLUS);
1157
1158 DEBUG(0,("Unrecognised protocol level %s\n",str));
1159
1160 return(def);
1161 }
1162
1163 /****************************************************************************
1164 Return true if a string could be a pure IP address.
1165 ****************************************************************************/
1166
1167 BOOL is_ipaddress(const char *str)
1168 {
1169 BOOL pure_address = True;
1170 int i;
1171
1172 for (i=0; pure_address && str[i]; i++)
1173 if (!(isdigit((int)str[i]) || str[i] == '.'))
1174 pure_address = False;
1175
1176 /* Check that a pure number is not misinterpreted as an IP */
1177 pure_address = pure_address && (strchr_m(str, '.') != NULL);
1178
1179 return pure_address;
1180 }
1181
1182 /****************************************************************************
1183 Interpret an internet address or name into an IP address in 4 byte form.
1184 ****************************************************************************/
1185
1186 uint32 interpret_addr(const char *str)
1187 {
1188 struct hostent *hp;
1189 uint32 res;
1190
1191 if (strcmp(str,"0.0.0.0") == 0)
1192 return(0);
1193 if (strcmp(str,"255.255.255.255") == 0)
1194 return(0xFFFFFFFF);
1195
1196 /* if it's in the form of an IP address then get the lib to interpret it */
1197 if (is_ipaddress(str)) {
1198 res = inet_addr(str);
1199 } else {
1200 /* otherwise assume it's a network name of some sort and use
1201 sys_gethostbyname */
1202 if ((hp = sys_gethostbyname(str)) == 0) {
1203 DEBUG(3,("sys_gethostbyname: Unknown host. %s\n",str));
1204 return 0;
1205 }
1206
1207 if(hp->h_addr == NULL) {
1208 DEBUG(3,("sys_gethostbyname: host address is invalid for host %s\n",str));
1209 return 0;
1210 }
1211 putip((char *)&res,(char *)hp->h_addr);
1212 }
1213
1214 if (res == (uint32)-1)
1215 return(0);
1216
1217 return(res);
1218 }
1219
1220 /*******************************************************************
1221 A convenient addition to interpret_addr().
1222 ******************************************************************/
1223
1224 struct in_addr *interpret_addr2(const char *str)
1225 {
1226 static struct in_addr ret;
1227 uint32 a = interpret_addr(str);
1228 ret.s_addr = a;
1229 return(&ret);
1230 }
1231
1232 /*******************************************************************
1233 Check if an IP is the 0.0.0.0.
1234 ******************************************************************/
1235
1236 BOOL is_zero_ip(struct in_addr ip)
1237 {
1238 uint32 a;
1239 putip((char *)&a,(char *)&ip);
1240 return(a == 0);
1241 }
1242
1243 /*******************************************************************
1244 Set an IP to 0.0.0.0.
1245 ******************************************************************/
1246
1247 void zero_ip(struct in_addr *ip)
1248 {
1249 static BOOL init;
1250 static struct in_addr ipzero;
1251
1252 if (!init) {
1253 ipzero = *interpret_addr2("0.0.0.0");
1254 init = True;
1255 }
1256
1257 *ip = ipzero;
1258 }
1259
1260 #if (defined(HAVE_NETGROUP) && defined(WITH_AUTOMOUNT))
1261 /******************************************************************
1262 Remove any mount options such as -rsize=2048,wsize=2048 etc.
1263 Based on a fix from <Thomas.Hepper@icem.de>.
1264 *******************************************************************/
1265
1266 static void strip_mount_options( pstring *str)
1267 {
1268 if (**str == '-') {
1269 char *p = *str;
1270 while(*p && !isspace(*p))
1271 p++;
1272 while(*p && isspace(*p))
1273 p++;
1274 if(*p) {
1275 pstring tmp_str;
1276
1277 pstrcpy(tmp_str, p);
1278 pstrcpy(*str, tmp_str);
1279 }
1280 }
1281 }
1282
1283 /*******************************************************************
1284 Patch from jkf@soton.ac.uk
1285 Split Luke's automount_server into YP lookup and string splitter
1286 so can easily implement automount_path().
1287 As we may end up doing both, cache the last YP result.
1288 *******************************************************************/
1289
1290 #ifdef WITH_NISPLUS_HOME
1291 char *automount_lookup( char *user_name)
1292 {
1293 static fstring last_key = "";
1294 static pstring last_value = "";
1295
1296 char *nis_map = (char *)lp_nis_home_map_name();
1297
1298 char buffer[NIS_MAXATTRVAL + 1];
1299 nis_result *result;
1300 nis_object *object;
1301 entry_obj *entry;
1302
1303 if (strcmp(user_name, last_key)) {
1304 slprintf(buffer, sizeof(buffer)-1, "[key=%s],%s", user_name, nis_map);
1305 DEBUG(5, ("NIS+ querystring: %s\n", buffer));
1306
1307 if (result = nis_list(buffer, FOLLOW_PATH|EXPAND_NAME|HARD_LOOKUP, NULL, NULL)) {
1308 if (result->status != NIS_SUCCESS) {
1309 DEBUG(3, ("NIS+ query failed: %s\n", nis_sperrno(result->status)));
1310 fstrcpy(last_key, ""); pstrcpy(last_value, "");
1311 } else {
1312 object = result->objects.objects_val;
1313 if (object->zo_data.zo_type == ENTRY_OBJ) {
1314 entry = &object->zo_data.objdata_u.en_data;
1315 DEBUG(5, ("NIS+ entry type: %s\n", entry->en_type));
1316 DEBUG(3, ("NIS+ result: %s\n", entry->en_cols.en_cols_val[1].ec_value.ec_value_val));
1317
1318 pstrcpy(last_value, entry->en_cols.en_cols_val[1].ec_value.ec_value_val);
1319 pstring_sub(last_value, "&", user_name);
1320 fstrcpy(last_key, user_name);
1321 }
1322 }
1323 }
1324 nis_freeresult(result);
1325 }
1326
1327 strip_mount_options(&last_value);
1328
1329 DEBUG(4, ("NIS+ Lookup: %s resulted in %s\n", user_name, last_value));
1330 return last_value;
1331 }
1332 #else /* WITH_NISPLUS_HOME */
1333
1334 char *automount_lookup( char *user_name)
1335 {
1336 static fstring last_key = "";
1337 static pstring last_value = "";
1338
1339 int nis_error; /* returned by yp all functions */
1340 char *nis_result; /* yp_match inits this */
1341 int nis_result_len; /* and set this */
1342 char *nis_domain; /* yp_get_default_domain inits this */
1343 char *nis_map = (char *)lp_nis_home_map_name();
1344
1345 if ((nis_error = yp_get_default_domain(&nis_domain)) != 0) {
1346 DEBUG(3, ("YP Error: %s\n", yperr_string(nis_error)));
1347 return last_value;
1348 }
1349
1350 DEBUG(5, ("NIS Domain: %s\n", nis_domain));
1351
1352 if (!strcmp(user_name, last_key)) {
1353 nis_result = last_value;
1354 nis_result_len = strlen(last_value);
1355 nis_error = 0;
1356 } else {
1357 if ((nis_error = yp_match(nis_domain, nis_map, user_name, strlen(user_name),
1358 &nis_result, &nis_result_len)) == 0) {
1359 if (!nis_error && nis_result_len >= sizeof(pstring)) {
1360 nis_result_len = sizeof(pstring)-1;
1361 }
1362 fstrcpy(last_key, user_name);
1363 strncpy(last_value, nis_result, nis_result_len);
1364 last_value[nis_result_len] = '\0';
1365 strip_mount_options(&last_value);
1366
1367 } else if(nis_error == YPERR_KEY) {
1368
1369 /* If Key lookup fails user home server is not in nis_map
1370 use default information for server, and home directory */
1371 last_value[0] = 0;
1372 DEBUG(3, ("YP Key not found: while looking up \"%s\" in map \"%s\"\n",
1373 user_name, nis_map));
1374 DEBUG(3, ("using defaults for server and home directory\n"));
1375 } else {
1376 DEBUG(3, ("YP Error: \"%s\" while looking up \"%s\" in map \"%s\"\n",
1377 yperr_string(nis_error), user_name, nis_map));
1378 }
1379 }
1380
1381 DEBUG(4, ("YP Lookup: %s resulted in %s\n", user_name, last_value));
1382 return last_value;
1383 }
1384 #endif /* WITH_NISPLUS_HOME */
1385 #endif
1386
1387 /*******************************************************************
1388 Are two IPs on the same subnet?
1389 ********************************************************************/
1390
1391 BOOL same_net(struct in_addr ip1,struct in_addr ip2,struct in_addr mask)
1392 {
1393 uint32 net1,net2,nmask;
1394
1395 nmask = ntohl(mask.s_addr);
1396 net1 = ntohl(ip1.s_addr);
1397 net2 = ntohl(ip2.s_addr);
1398
1399 return((net1 & nmask) == (net2 & nmask));
1400 }
1401
1402
1403 /****************************************************************************
1404 Check if a process exists. Does this work on all unixes?
1405 ****************************************************************************/
1406
1407 BOOL process_exists(const struct process_id pid)
1408 {
1409 if (!procid_is_local(&pid)) {
1410 /* This *SEVERELY* needs fixing. */
1411 return True;
1412 }
1413
1414 /* Doing kill with a non-positive pid causes messages to be
1415 * sent to places we don't want. */
1416 SMB_ASSERT(pid.pid > 0);
1417 return(kill(pid.pid,0) == 0 || errno != ESRCH);
1418 }
1419
1420 BOOL process_exists_by_pid(pid_t pid)
1421 {
1422 return process_exists(pid_to_procid(pid));
1423 }
1424
1425 /*******************************************************************
1426 Convert a uid into a user name.
1427 ********************************************************************/
1428
1429 const char *uidtoname(uid_t uid)
1430 {
1431 static fstring name;
1432 struct passwd *pass;
1433
1434 pass = getpwuid_alloc(uid);
1435 if (pass) {
1436 fstrcpy(name, pass->pw_name);
1437 passwd_free(&pass);
1438 } else {
1439 slprintf(name, sizeof(name) - 1, "%ld",(long int)uid);
1440 }
1441 return name;
1442 }
1443
1444
1445 /*******************************************************************
1446 Convert a gid into a group name.
1447 ********************************************************************/
1448
1449 char *gidtoname(gid_t gid)
1450 {
1451 static fstring name;
1452 struct group *grp;
1453
1454 grp = getgrgid(gid);
1455 if (grp)
1456 return(grp->gr_name);
1457 slprintf(name,sizeof(name) - 1, "%d",(int)gid);
1458 return(name);
1459 }
1460
1461 /*******************************************************************
1462 Convert a user name into a uid.
1463 ********************************************************************/
1464
1465 uid_t nametouid(const char *name)
1466 {
1467 struct passwd *pass;
1468 char *p;
1469 uid_t u;
1470
1471 pass = getpwnam_alloc(name);
1472 if (pass) {
1473 u = pass->pw_uid;
1474 passwd_free(&pass);
1475 return u;
1476 }
1477
1478 u = (uid_t)strtol(name, &p, 0);
1479 if ((p != name) && (*p == '\0'))
1480 return u;
1481
1482 return (uid_t)-1;
1483 }
1484
1485 /*******************************************************************
1486 Convert a name to a gid_t if possible. Return -1 if not a group.
1487 ********************************************************************/
1488
1489 gid_t nametogid(const char *name)
1490 {
1491 struct group *grp;
1492 char *p;
1493 gid_t g;
1494
1495 g = (gid_t)strtol(name, &p, 0);
1496 if ((p != name) && (*p == '\0'))
1497 return g;
1498
1499 grp = sys_getgrnam(name);
1500 if (grp)
1501 return(grp->gr_gid);
1502 return (gid_t)-1;
1503 }
1504
1505 /*******************************************************************
1506 legacy wrapper for smb_panic2()
1507 ********************************************************************/
1508 void smb_panic( const char *why )
1509 {
1510 smb_panic2( why, True );
1511 }
1512
1513 /*******************************************************************
1514 Something really nasty happened - panic !
1515 ********************************************************************/
1516
1517 #ifdef HAVE_LIBEXC_H
1518 #include <libexc.h>
1519 #endif
1520
1521 void smb_panic2(const char *why, BOOL decrement_pid_count )
1522 {
1523 char *cmd;
1524 int result;
1525 #ifdef HAVE_BACKTRACE_SYMBOLS
1526 void *backtrace_stack[BACKTRACE_STACK_SIZE];
1527 size_t backtrace_size;
1528 char **backtrace_strings;
1529 #endif
1530
1531 #ifdef DEVELOPER
1532 {
1533
1534 if (global_clobber_region_function) {
1535 DEBUG(0,("smb_panic: clobber_region() last called from [%s(%u)]\n",
1536 global_clobber_region_function,
1537 global_clobber_region_line));
1538 }
1539 }
1540 #endif
1541
1542 /* only smbd needs to decrement the smbd counter in connections.tdb */
1543 if ( decrement_pid_count )
1544 decrement_smbd_process_count();
1545
1546 cmd = lp_panic_action();
1547 if (cmd && *cmd) {
1548 DEBUG(0, ("smb_panic(): calling panic action [%s]\n", cmd));
1549 result = system(cmd);
1550
1551 if (result == -1)
1552 DEBUG(0, ("smb_panic(): fork failed in panic action: %s\n",
1553 strerror(errno)));
1554 else
1555 DEBUG(0, ("smb_panic(): action returned status %d\n",
1556 WEXITSTATUS(result)));
1557 }
1558 DEBUG(0,("PANIC: %s\n", why));
1559
1560 #ifdef HAVE_BACKTRACE_SYMBOLS
1561 /* get the backtrace (stack frames) */
1562 backtrace_size = backtrace(backtrace_stack,BACKTRACE_STACK_SIZE);
1563 backtrace_strings = backtrace_symbols(backtrace_stack, backtrace_size);
1564
1565 DEBUG(0, ("BACKTRACE: %lu stack frames:\n",
1566 (unsigned long)backtrace_size));
1567
1568 if (backtrace_strings) {
1569 int i;
1570
1571 for (i = 0; i < backtrace_size; i++)
1572 DEBUGADD(0, (" #%u %s\n", i, backtrace_strings[i]));
1573
1574 /* Leak the backtrace_strings, rather than risk what free() might do */
1575 }
1576
1577 #elif HAVE_LIBEXC
1578
1579 #define NAMESIZE 32 /* Arbitrary */
1580
1581 /* The IRIX libexc library provides an API for unwinding the stack. See
1582 * libexc(3) for details. Apparantly trace_back_stack leaks memory, but
1583 * since we are about to abort anyway, it hardly matters.
1584 *
1585 * Note that if we paniced due to a SIGSEGV or SIGBUS (or similar) this
1586 * will fail with a nasty message upon failing to open the /proc entry.
1587 */
1588 {
1589 __uint64_t addrs[BACKTRACE_STACK_SIZE];
1590 char * names[BACKTRACE_STACK_SIZE];
1591 char namebuf[BACKTRACE_STACK_SIZE * NAMESIZE];
1592
1593 int i;
1594 int levels;
1595
1596 ZERO_ARRAY(addrs);
1597 ZERO_ARRAY(names);
1598 ZERO_ARRAY(namebuf);
1599
1600 /* We need to be root so we can open our /proc entry to walk
1601 * our stack. It also helps when we want to dump core.
1602 */
1603 become_root();
1604
1605 for (i = 0; i < BACKTRACE_STACK_SIZE; i++) {
1606 names[i] = namebuf + (i * NAMESIZE);
1607 }
1608
1609 levels = trace_back_stack(0, addrs, names,
1610 BACKTRACE_STACK_SIZE, NAMESIZE - 1);
1611
1612 DEBUG(0, ("BACKTRACE: %d stack frames:\n", levels));
1613 for (i = 0; i < levels; i++) {
1614 DEBUGADD(0, (" #%d 0x%llx %s\n", i, addrs[i], names[i]));
1615 }
1616 }
1617 #undef NAMESIZE
1618 #endif
1619
1620 dbgflush();
1621 #ifdef SIGABRT
1622 CatchSignal(SIGABRT,SIGNAL_CAST SIG_DFL);
1623 #endif
1624 abort();
1625 }
1626
1627 /*******************************************************************
1628 A readdir wrapper which just returns the file name.
1629 ********************************************************************/
1630
1631 const char *readdirname(SMB_STRUCT_DIR *p)
1632 {
1633 SMB_STRUCT_DIRENT *ptr;
1634 char *dname;
1635
1636 if (!p)
1637 return(NULL);
1638
1639 ptr = (SMB_STRUCT_DIRENT *)sys_readdir(p);
1640 if (!ptr)
1641 return(NULL);
1642
1643 dname = ptr->d_name;
1644
1645 #ifdef NEXT2
1646 if (telldir(p) < 0)
1647 return(NULL);
1648 #endif
1649
1650 #ifdef HAVE_BROKEN_READDIR
1651 /* using /usr/ucb/cc is BAD */
1652 dname = dname - 2;
1653 #endif
1654
1655 {
1656 static pstring buf;
1657 int len = NAMLEN(ptr);
1658 memcpy(buf, dname, len);
1659 buf[len] = 0;
1660 dname = buf;
1661 }
1662
1663 return(dname);
1664 }
1665
1666 /*******************************************************************
1667 Utility function used to decide if the last component
1668 of a path matches a (possibly wildcarded) entry in a namelist.
1669 ********************************************************************/
1670
1671 BOOL is_in_path(const char *name, name_compare_entry *namelist, BOOL case_sensitive)
1672 {
1673 pstring last_component;
1674 char *p;
1675
1676 /* if we have no list it's obviously not in the path */
1677 if((namelist == NULL ) || ((namelist != NULL) && (namelist[0].name == NULL))) {
1678 return False;
1679 }
1680
1681 DEBUG(8, ("is_in_path: %s\n", name));
1682
1683 /* Get the last component of the unix name. */
1684 p = strrchr_m(name, '/');
1685 strncpy(last_component, p ? ++p : name, sizeof(last_component)-1);
1686 last_component[sizeof(last_component)-1] = '\0';
1687
1688 for(; namelist->name != NULL; namelist++) {
1689 if(namelist->is_wild) {
1690 if (mask_match(last_component, namelist->name, case_sensitive)) {
1691 DEBUG(8,("is_in_path: mask match succeeded\n"));
1692 return True;
1693 }
1694 } else {
1695 if((case_sensitive && (strcmp(last_component, namelist->name) == 0))||
1696 (!case_sensitive && (StrCaseCmp(last_component, namelist->name) == 0))) {
1697 DEBUG(8,("is_in_path: match succeeded\n"));
1698 return True;
1699 }
1700 }
1701 }
1702 DEBUG(8,("is_in_path: match not found\n"));
1703
1704 return False;
1705 }
1706
1707 /*******************************************************************
1708 Strip a '/' separated list into an array of
1709 name_compare_enties structures suitable for
1710 passing to is_in_path(). We do this for
1711 speed so we can pre-parse all the names in the list
1712 and don't do it for each call to is_in_path().
1713 namelist is modified here and is assumed to be
1714 a copy owned by the caller.
1715 We also check if the entry contains a wildcard to
1716 remove a potentially expensive call to mask_match
1717 if possible.
1718 ********************************************************************/
1719
1720 void set_namearray(name_compare_entry **ppname_array, char *namelist)
1721 {
1722 char *name_end;
1723 char *nameptr = namelist;
1724 int num_entries = 0;
1725 int i;
1726
1727 (*ppname_array) = NULL;
1728
1729 if((nameptr == NULL ) || ((nameptr != NULL) && (*nameptr == '\0')))
1730 return;
1731
1732 /* We need to make two passes over the string. The
1733 first to count the number of elements, the second
1734 to split it.
1735 */
1736
1737 while(*nameptr) {
1738 if ( *nameptr == '/' ) {
1739 /* cope with multiple (useless) /s) */
1740 nameptr++;
1741 continue;
1742 }
1743 /* find the next / */
1744 name_end = strchr_m(nameptr, '/');
1745
1746 /* oops - the last check for a / didn't find one. */
1747 if (name_end == NULL)
1748 break;
1749
1750 /* next segment please */
1751 nameptr = name_end + 1;
1752 num_entries++;
1753 }
1754
1755 if(num_entries == 0)
1756 return;
1757
1758 if(( (*ppname_array) = SMB_MALLOC_ARRAY(name_compare_entry, num_entries + 1)) == NULL) {
1759 DEBUG(0,("set_namearray: malloc fail\n"));
1760 return;
1761 }
1762
1763 /* Now copy out the names */
1764 nameptr = namelist;
1765 i = 0;
1766 while(*nameptr) {
1767 if ( *nameptr == '/' ) {
1768 /* cope with multiple (useless) /s) */
1769 nameptr++;
1770 continue;
1771 }
1772 /* find the next / */
1773 if ((name_end = strchr_m(nameptr, '/')) != NULL)
1774 *name_end = 0;
1775
1776 /* oops - the last check for a / didn't find one. */
1777 if(name_end == NULL)
1778 break;
1779
1780 (*ppname_array)[i].is_wild = ms_has_wild(nameptr);
1781 if(((*ppname_array)[i].name = SMB_STRDUP(nameptr)) == NULL) {
1782 DEBUG(0,("set_namearray: malloc fail (1)\n"));
1783 return;
1784 }
1785
1786 /* next segment please */
1787 nameptr = name_end + 1;
1788 i++;
1789 }
1790
1791 (*ppname_array)[i].name = NULL;
1792
1793 return;
1794 }
1795
1796 /****************************************************************************
1797 Routine to free a namearray.
1798 ****************************************************************************/
1799
1800 void free_namearray(name_compare_entry *name_array)
1801 {
1802 int i;
1803
1804 if(name_array == NULL)
1805 return;
1806
1807 for(i=0; name_array[i].name!=NULL; i++)
1808 SAFE_FREE(name_array[i].name);
1809 SAFE_FREE(name_array);
1810 }
1811
1812 #undef DBGC_CLASS
1813 #define DBGC_CLASS DBGC_LOCKING
1814
1815 /****************************************************************************
1816 Simple routine to do POSIX file locking. Cruft in NFS and 64->32 bit mapping
1817 is dealt with in posix.c
1818 ****************************************************************************/
1819
1820 BOOL fcntl_lock(int fd, int op, SMB_OFF_T offset, SMB_OFF_T count, int type)
1821 {
1822 SMB_STRUCT_FLOCK lock;
1823 int ret;
1824
1825 DEBUG(8,("fcntl_lock %d %d %.0f %.0f %d\n",fd,op,(double)offset,(double)count,type));
1826
1827 lock.l_type = type;
1828 lock.l_whence = SEEK_SET;
1829 lock.l_start = offset;
1830 lock.l_len = count;
1831 lock.l_pid = 0;
1832
1833 ret = sys_fcntl_ptr(fd,op,&lock);
1834
1835 if (ret == -1 && errno != 0)
1836 DEBUG(3,("fcntl_lock: fcntl lock gave errno %d (%s)\n",errno,strerror(errno)));
1837
1838 /* a lock query */
1839 if (op == SMB_F_GETLK) {
1840 if ((ret != -1) &&
1841 (lock.l_type != F_UNLCK) &&
1842 (lock.l_pid != 0) &&
1843 (lock.l_pid != sys_getpid())) {
1844 DEBUG(3,("fcntl_lock: fd %d is locked by pid %d\n",fd,(int)lock.l_pid));
1845 return(True);
1846 }
1847
1848 /* it must be not locked or locked by me */
1849 return(False);
1850 }
1851
1852 /* a lock set or unset */
1853 if (ret == -1) {
1854 DEBUG(3,("fcntl_lock: lock failed at offset %.0f count %.0f op %d type %d (%s)\n",
1855 (double)offset,(double)count,op,type,strerror(errno)));
1856 return(False);
1857 }
1858
1859 /* everything went OK */
1860 DEBUG(8,("fcntl_lock: Lock call successful\n"));
1861
1862 return(True);
1863 }
1864
1865 #undef DBGC_CLASS
1866 #define DBGC_CLASS DBGC_ALL
1867
1868 /*******************************************************************
1869 Is the name specified one of my netbios names.
1870 Returns true if it is equal, false otherwise.
1871 ********************************************************************/
1872
1873 BOOL is_myname(const char *s)
1874 {
1875 int n;
1876 BOOL ret = False;
1877
1878 for (n=0; my_netbios_names(n); n++) {
1879 if (strequal(my_netbios_names(n), s)) {
1880 ret=True;
1881 break;
1882 }
1883 }
1884 DEBUG(8, ("is_myname(\"%s\") returns %d\n", s, ret));
1885 return(ret);
1886 }
1887
1888 BOOL is_myname_or_ipaddr(const char *s)
1889 {
1890 fstring name, dnsname;
1891 char *servername;
1892
1893 if ( !s )
1894 return False;
1895
1896 /* santize the string from '\\name' */
1897
1898 fstrcpy( name, s );
1899
1900 servername = strrchr_m( name, '\\' );
1901 if ( !servername )
1902 servername = name;
1903 else
1904 servername++;
1905
1906 /* optimize for the common case */
1907
1908 if (strequal(servername, global_myname()))
1909 return True;
1910
1911 /* check for an alias */
1912
1913 if (is_myname(servername))
1914 return True;
1915
1916 /* check for loopback */
1917
1918 if (strequal(servername, "localhost"))
1919 return True;
1920
1921 /* maybe it's my dns name */
1922
1923 if ( get_mydnsfullname( dnsname ) )
1924 if ( strequal( servername, dnsname ) )
1925 return True;
1926
1927 /* handle possible CNAME records */
1928
1929 if ( !is_ipaddress( servername ) ) {
1930 /* use DNS to resolve the name, but only the first address */
1931 struct hostent *hp;
1932
1933 if (((hp = sys_gethostbyname(name)) != NULL) && (hp->h_addr != NULL)) {
1934 struct in_addr return_ip;
1935 putip( (char*)&return_ip, (char*)hp->h_addr );
1936 fstrcpy( name, inet_ntoa( return_ip ) );
1937 servername = name;
1938 }
1939 }
1940
1941 /* maybe its an IP address? */
1942 if (is_ipaddress(servername)) {
1943 struct iface_struct nics[MAX_INTERFACES];
1944 int i, n;
1945 uint32 ip;
1946
1947 ip = interpret_addr(servername);
1948 if ((ip==0) || (ip==0xffffffff))
1949 return False;
1950
1951 n = get_interfaces(nics, MAX_INTERFACES);
1952 for (i=0; i<n; i++) {
1953 if (ip == nics[i].ip.s_addr)
1954 return True;
1955 }
1956 }
1957
1958 /* no match */
1959 return False;
1960 }
1961
1962 /*******************************************************************
1963 Is the name specified our workgroup/domain.
1964 Returns true if it is equal, false otherwise.
1965 ********************************************************************/
1966
1967 BOOL is_myworkgroup(const char *s)
1968 {
1969 BOOL ret = False;
1970
1971 if (strequal(s, lp_workgroup())) {
1972 ret=True;
1973 }
1974
1975 DEBUG(8, ("is_myworkgroup(\"%s\") returns %d\n", s, ret));
1976 return(ret);
1977 }
1978
1979 /*******************************************************************
1980 we distinguish between 2K and XP by the "Native Lan Manager" string
1981 WinXP => "Windows 2002 5.1"
1982 Win2k => "Windows 2000 5.0"
1983 NT4 => "Windows NT 4.0"
1984 Win9x => "Windows 4.0"
1985 Windows 2003 doesn't set the native lan manager string but
1986 they do set the domain to "Windows 2003 5.2" (probably a bug).
1987 ********************************************************************/
1988
1989 void ra_lanman_string( const char *native_lanman )
1990 {
1991 if ( strcmp( native_lanman, "Windows 2002 5.1" ) == 0 )
1992 set_remote_arch( RA_WINXP );
1993 else if ( strcmp( native_lanman, "Windows Server 2003 5.2" ) == 0 )
1994 set_remote_arch( RA_WIN2K3 );
1995 }
1996
1997 /*******************************************************************
1998 Set the horrid remote_arch string based on an enum.
1999 ********************************************************************/
2000
2001 void set_remote_arch(enum remote_arch_types type)
2002 {
2003 ra_type = type;
2004 switch( type ) {
2005 case RA_WFWG:
2006 fstrcpy(remote_arch, "WfWg");
2007 break;
2008 case RA_OS2:
2009 fstrcpy(remote_arch, "OS2");
2010 break;
2011 case RA_WIN95:
2012 fstrcpy(remote_arch, "Win95");
2013 break;
2014 case RA_WINNT:
2015 fstrcpy(remote_arch, "WinNT");
2016 break;
2017 case RA_WIN2K:
2018 fstrcpy(remote_arch, "Win2K");
2019 break;
2020 case RA_WINXP:
2021 fstrcpy(remote_arch, "WinXP");
2022 break;
2023 case RA_WIN2K3:
2024 fstrcpy(remote_arch, "Win2K3");
2025 break;
2026 case RA_SAMBA:
2027 fstrcpy(remote_arch,"Samba");
2028 break;
2029 case RA_CIFSFS:
2030 fstrcpy(remote_arch,"CIFSFS");
2031 break;
2032 default:
2033 ra_type = RA_UNKNOWN;
2034 fstrcpy(remote_arch, "UNKNOWN");
2035 break;
2036 }
2037
2038 DEBUG(10,("set_remote_arch: Client arch is \'%s\'\n", remote_arch));
2039 }
2040
2041 /*******************************************************************
2042 Get the remote_arch type.
2043 ********************************************************************/
2044
2045 enum remote_arch_types get_remote_arch(void)
2046 {
2047 return ra_type;
2048 }
2049
2050 void print_asc(int level, const unsigned char *buf,int len)
2051 {
2052 int i;
2053 for (i=0;i<len;i++)
2054 DEBUG(level,("%c", isprint(buf[i])?buf[i]:'.'));
2055 }
2056
2057 void dump_data(int level, const char *buf1,int len)
2058 {
2059 const unsigned char *buf = (const unsigned char *)buf1;
2060 int i=0;
2061 if (len<=0) return;
2062
2063 if (!DEBUGLVL(level)) return;
2064
2065 DEBUGADD(level,("[%03X] ",i));
2066 for (i=0;i<len;) {
2067 DEBUGADD(level,("%02X ",(int)buf[i]));
2068 i++;
2069 if (i%8 == 0) DEBUGADD(level,(" "));
2070 if (i%16 == 0) {
2071 print_asc(level,&buf[i-16],8); DEBUGADD(level,(" "));
2072 print_asc(level,&buf[i-8],8); DEBUGADD(level,("\n"));
2073 if (i<len) DEBUGADD(level,("[%03X] ",i));
2074 }
2075 }
2076 if (i%16) {
2077 int n;
2078 n = 16 - (i%16);
2079 DEBUGADD(level,(" "));
2080 if (n>8) DEBUGADD(level,(" "));
2081 while (n--) DEBUGADD(level,(" "));
2082 n = MIN(8,i%16);
2083 print_asc(level,&buf[i-(i%16)],n); DEBUGADD(level,( " " ));
2084 n = (i%16) - n;
2085 if (n>0) print_asc(level,&buf[i-n],n);
2086 DEBUGADD(level,("\n"));
2087 }
2088 }
2089
2090 void dump_data_pw(const char *msg, const uchar * data, size_t len)
2091 {
2092 #ifdef DEBUG_PASSWORD
2093 DEBUG(11, ("%s", msg));
2094 if (data != NULL && len > 0)
2095 {
2096 dump_data(11, data, len);
2097 }
2098 #endif
2099 }
2100
2101 char *tab_depth(int depth)
2102 {
2103 static pstring spaces;
2104 memset(spaces, ' ', depth * 4);
2105 spaces[depth * 4] = 0;
2106 return spaces;
2107 }
2108
2109 /*****************************************************************************
2110 Provide a checksum on a string
2111
2112 Input: s - the null-terminated character string for which the checksum
2113 will be calculated.
2114
2115 Output: The checksum value calculated for s.
2116 *****************************************************************************/
2117
2118 int str_checksum(const char *s)
2119 {
2120 int res = 0;
2121 int c;
2122 int i=0;
2123
2124 while(*s) {
2125 c = *s;
2126 res ^= (c << (i % 15)) ^ (c >> (15-(i%15)));
2127 s++;
2128 i++;
2129 }
2130 return(res);
2131 }
2132
2133 /*****************************************************************
2134 Zero a memory area then free it. Used to catch bugs faster.
2135 *****************************************************************/
2136
2137 void zero_free(void *p, size_t size)
2138 {
2139 memset(p, 0, size);
2140 SAFE_FREE(p);
2141 }
2142
2143 /*****************************************************************
2144 Set our open file limit to a requested max and return the limit.
2145 *****************************************************************/
2146
2147 int set_maxfiles(int requested_max)
2148 {
2149 #if (defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE))
2150 struct rlimit rlp;
2151 int saved_current_limit;
2152
2153 if(getrlimit(RLIMIT_NOFILE, &rlp)) {
2154 DEBUG(0,("set_maxfiles: getrlimit (1) for RLIMIT_NOFILE failed with error %s\n",
2155 strerror(errno) ));
2156 /* just guess... */
2157 return requested_max;
2158 }
2159
2160 /*
2161 * Set the fd limit to be real_max_open_files + MAX_OPEN_FUDGEFACTOR to
2162 * account for the extra fd we need
2163 * as well as the log files and standard
2164 * handles etc. Save the limit we want to set in case
2165 * we are running on an OS that doesn't support this limit (AIX)
2166 * which always returns RLIM_INFINITY for rlp.rlim_max.
2167 */
2168
2169 /* Try raising the hard (max) limit to the requested amount. */
2170
2171 #if defined(RLIM_INFINITY)
2172 if (rlp.rlim_max != RLIM_INFINITY) {
2173 int orig_max = rlp.rlim_max;
2174
2175 if ( rlp.rlim_max < requested_max )
2176 rlp.rlim_max = requested_max;
2177
2178 /* This failing is not an error - many systems (Linux) don't
2179 support our default request of 10,000 open files. JRA. */
2180
2181 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
2182 DEBUG(3,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d max files failed with error %s\n",
2183 (int)rlp.rlim_max, strerror(errno) ));
2184
2185 /* Set failed - restore original value from get. */
2186 rlp.rlim_max = orig_max;
2187 }
2188 }
2189 #endif
2190
2191 /* Now try setting the soft (current) limit. */
2192
2193 saved_current_limit = rlp.rlim_cur = MIN(requested_max,rlp.rlim_max);
2194
2195 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
2196 DEBUG(0,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d files failed with error %s\n",
2197 (int)rlp.rlim_cur, strerror(errno) ));
2198 /* just guess... */
2199 return saved_current_limit;
2200 }
2201
2202 if(getrlimit(RLIMIT_NOFILE, &rlp)) {
2203 DEBUG(0,("set_maxfiles: getrlimit (2) for RLIMIT_NOFILE failed with error %s\n",
2204 strerror(errno) ));
2205 /* just guess... */
2206 return saved_current_limit;
2207 }
2208
2209 #if defined(RLIM_INFINITY)
2210 if(rlp.rlim_cur == RLIM_INFINITY)
2211 return saved_current_limit;
2212 #endif
2213
2214 if((int)rlp.rlim_cur > saved_current_limit)
2215 return saved_current_limit;
2216
2217 return rlp.rlim_cur;
2218 #else /* !defined(HAVE_GETRLIMIT) || !defined(RLIMIT_NOFILE) */
2219 /*
2220 * No way to know - just guess...
2221 */
2222 return requested_max;
2223 #endif
2224 }
2225
2226 /*****************************************************************
2227 Possibly replace mkstemp if it is broken.
2228 *****************************************************************/
2229
2230 int smb_mkstemp(char *name_template)
2231 {
2232 #if HAVE_SECURE_MKSTEMP
2233 return mkstemp(name_template);
2234 #else
2235 /* have a reasonable go at emulating it. Hope that
2236 the system mktemp() isn't completly hopeless */
2237 char *p = mktemp(name_template);
2238 if (!p)
2239 return -1;
2240 return open(p, O_CREAT|O_EXCL|O_RDWR, 0600);
2241 #endif
2242 }
2243
2244 /*****************************************************************
2245 malloc that aborts with smb_panic on fail or zero size.
2246 *****************************************************************/
2247
2248 void *smb_xmalloc_array(size_t size, unsigned int count)
2249 {
2250 void *p;
2251 if (size == 0)
2252 smb_panic("smb_xmalloc_array: called with zero size.\n");
2253 if (count >= MAX_ALLOC_SIZE/size) {
2254 smb_panic("smb_xmalloc: alloc size too large.\n");
2255 }
2256 if ((p = SMB_MALLOC(size*count)) == NULL) {
2257 DEBUG(0, ("smb_xmalloc_array failed to allocate %lu * %lu bytes\n",
2258 (unsigned long)size, (unsigned long)count));
2259 smb_panic("smb_xmalloc_array: malloc fail.\n");
2260 }
2261 return p;
2262 }
2263
2264 /**
2265 Memdup with smb_panic on fail.
2266 **/
2267
2268 void *smb_xmemdup(const void *p, size_t size)
2269 {
2270 void *p2;
2271 p2 = SMB_XMALLOC_ARRAY(unsigned char,size);
2272 memcpy(p2, p, size);
2273 return p2;
2274 }
2275
2276 /**
2277 strdup that aborts on malloc fail.
2278 **/
2279
2280 char *smb_xstrdup(const char *s)
2281 {
2282 #if defined(PARANOID_MALLOC_CHECKER)
2283 #ifdef strdup
2284 #undef strdup
2285 #endif
2286 #endif
2287 char *s1 = strdup(s);
2288 #if defined(PARANOID_MALLOC_CHECKER)
2289 #define strdup(s) __ERROR_DONT_USE_STRDUP_DIRECTLY
2290 #endif
2291 if (!s1)
2292 smb_panic("smb_xstrdup: malloc fail\n");
2293 return s1;
2294
2295 }
2296
2297 /**
2298 strndup that aborts on malloc fail.
2299 **/
2300
2301 char *smb_xstrndup(const char *s, size_t n)
2302 {
2303 #if defined(PARANOID_MALLOC_CHECKER)
2304 #ifdef strndup
2305 #undef strndup
2306 #endif
2307 #endif
2308 char *s1 = strndup(s, n);
2309 #if defined(PARANOID_MALLOC_CHECKER)
2310 #define strndup(s,n) __ERROR_DONT_USE_STRNDUP_DIRECTLY
2311 #endif
2312 if (!s1)
2313 smb_panic("smb_xstrndup: malloc fail\n");
2314 return s1;
2315 }
2316
2317 /*
2318 vasprintf that aborts on malloc fail
2319 */
2320
2321 int smb_xvasprintf(char **ptr, const char *format, va_list ap)
2322 {
2323 int n;
2324 va_list ap2;
2325
2326 VA_COPY(ap2, ap);
2327
2328 n = vasprintf(ptr, format, ap2);
2329 if (n == -1 || ! *ptr)
2330 smb_panic("smb_xvasprintf: out of memory");
2331 return n;
2332 }
2333
2334 /*****************************************************************
2335 Like strdup but for memory.
2336 *****************************************************************/
2337
2338 void *memdup(const void *p, size_t size)
2339 {
2340 void *p2;
2341 if (size == 0)
2342 return NULL;
2343 p2 = SMB_MALLOC(size);
2344 if (!p2)
2345 return NULL;
2346 memcpy(p2, p, size);
2347 return p2;
2348 }
2349
2350 /*****************************************************************
2351 Get local hostname and cache result.
2352 *****************************************************************/
2353
2354 char *myhostname(void)
2355 {
2356 static pstring ret;
2357 if (ret[0] == 0)
2358 get_myname(ret);
2359 return ret;
2360 }
2361
2362 /*****************************************************************
2363 A useful function for returning a path in the Samba lock directory.
2364 *****************************************************************/
2365
2366 char *lock_path(const char *name)
2367 {
2368 static pstring fname;
2369
2370 pstrcpy(fname,lp_lockdir());
2371 trim_char(fname,'\0','/');
2372
2373 if (!directory_exist(fname,NULL))
2374 mkdir(fname,0755);
2375
2376 pstrcat(fname,"/");
2377 pstrcat(fname,name);
2378
2379 return fname;
2380 }
2381
2382 /*****************************************************************
2383 A useful function for returning a path in the Samba pid directory.
2384 *****************************************************************/
2385
2386 char *pid_path(const char *name)
2387 {
2388 static pstring fname;
2389
2390 pstrcpy(fname,lp_piddir());
2391 trim_char(fname,'\0','/');
2392
2393 if (!directory_exist(fname,NULL))
2394 mkdir(fname,0755);
2395
2396 pstrcat(fname,"/");
2397 pstrcat(fname,name);
2398
2399 return fname;
2400 }
2401
2402 /**
2403 * @brief Returns an absolute path to a file in the Samba lib directory.
2404 *
2405 * @param name File to find, relative to LIBDIR.
2406 *
2407 * @retval Pointer to a static #pstring containing the full path.
2408 **/
2409
2410 char *lib_path(const char *name)
2411 {
2412 static pstring fname;
2413 fstr_sprintf(fname, "%s/%s", dyn_LIBDIR, name);
2414 return fname;
2415 }
2416
2417 /**
2418 * @brief Returns the platform specific shared library extension.
2419 *
2420 * @retval Pointer to a static #fstring containing the extension.
2421 **/
2422
2423 const char *shlib_ext(void)
2424 {
2425 return dyn_SHLIBEXT;
2426 }
2427
2428 /*******************************************************************
2429 Given a filename - get its directory name
2430 NB: Returned in static storage. Caveats:
2431 o Not safe in thread environment.
2432 o Caller must not free.
2433 o If caller wishes to preserve, they should copy.
2434 ********************************************************************/
2435
2436 char *parent_dirname(const char *path)
2437 {
2438 static pstring dirpath;
2439 char *p;
2440
2441 if (!path)
2442 return(NULL);
2443
2444 pstrcpy(dirpath, path);
2445 p = strrchr_m(dirpath, '/'); /* Find final '/', if any */
2446 if (!p) {
2447 pstrcpy(dirpath, "."); /* No final "/", so dir is "." */
2448 } else {
2449 if (p == dirpath)
2450 ++p; /* For root "/", leave "/" in place */
2451 *p = '\0';
2452 }
2453 return dirpath;
2454 }
2455
2456
2457 /*******************************************************************
2458 Determine if a pattern contains any Microsoft wildcard characters.
2459 *******************************************************************/
2460
2461 BOOL ms_has_wild(const char *s)
2462 {
2463 char c;
2464
2465 if (lp_posix_pathnames()) {
2466 /* With posix pathnames no characters are wild. */
2467 return False;
2468 }
2469
2470 while ((c = *s++)) {
2471 switch (c) {
2472 case '*':
2473 case '?':
2474 case '<':
2475 case '>':
2476 case '"':
2477 return True;
2478 }
2479 }
2480 return False;
2481 }
2482
2483 BOOL ms_has_wild_w(const smb_ucs2_t *s)
2484 {
2485 smb_ucs2_t c;
2486 if (!s) return False;
2487 while ((c = *s++)) {
2488 switch (c) {
2489 case UCS2_CHAR('*'):
2490 case UCS2_CHAR('?'):
2491 case UCS2_CHAR('<'):
2492 case UCS2_CHAR('>'):
2493 case UCS2_CHAR('"'):
2494 return True;
2495 }
2496 }
2497 return False;
2498 }
2499
2500 /*******************************************************************
2501 A wrapper that handles case sensitivity and the special handling
2502 of the ".." name.
2503 *******************************************************************/
2504
2505 BOOL mask_match(const char *string, char *pattern, BOOL is_case_sensitive)
2506 {
2507 if (strcmp(string,"..") == 0)
2508 string = ".";
2509 if (strcmp(pattern,".") == 0)
2510 return False;
2511
2512 return ms_fnmatch(pattern, string, Protocol <= PROTOCOL_LANMAN2, is_case_sensitive) == 0;
2513 }
2514
2515 /*******************************************************************
2516 A wrapper that handles case sensitivity and the special handling
2517 of the ".." name. Varient that is only called by old search code which requires
2518 pattern translation.
2519 *******************************************************************/
2520
2521 BOOL mask_match_search(const char *string, char *pattern, BOOL is_case_sensitive)
2522 {
2523 if (strcmp(string,"..") == 0)
2524 string = ".";
2525 if (strcmp(pattern,".") == 0)
2526 return False;
2527
2528 return ms_fnmatch(pattern, string, True, is_case_sensitive) == 0;
2529 }
2530
2531 /*******************************************************************
2532 A wrapper that handles a list of patters and calls mask_match()
2533 on each. Returns True if any of the patterns match.
2534 *******************************************************************/
2535
2536 BOOL mask_match_list(const char *string, char **list, int listLen, BOOL is_case_sensitive)
2537 {
2538 while (listLen-- > 0) {
2539 if (mask_match(string, *list++, is_case_sensitive))
2540 return True;
2541 }
2542 return False;
2543 }
2544
2545 /*********************************************************
2546 Recursive routine that is called by unix_wild_match.
2547 *********************************************************/
2548
2549 static BOOL unix_do_match(const char *regexp, const char *str)
2550 {
2551 const char *p;
2552
2553 for( p = regexp; *p && *str; ) {
2554
2555 switch(*p) {
2556 case '?':
2557 str++;
2558 p++;
2559 break;
2560
2561 case '*':
2562
2563 /*
2564 * Look for a character matching
2565 * the one after the '*'.
2566 */
2567 p++;
2568 if(!*p)
2569 return True; /* Automatic match */
2570 while(*str) {
2571
2572 while(*str && (*p != *str))
2573 str++;
2574
2575 /*
2576 * Patch from weidel@multichart.de. In the case of the regexp
2577 * '*XX*' we want to ensure there are at least 2 'X' characters
2578 * in the string after the '*' for a match to be made.
2579 */
2580
2581 {
2582 int matchcount=0;
2583
2584 /*
2585 * Eat all the characters that match, but count how many there were.
2586 */
2587
2588 while(*str && (*p == *str)) {
2589 str++;
2590 matchcount++;
2591 }
2592
2593 /*
2594 * Now check that if the regexp had n identical characters that
2595 * matchcount had at least that many matches.
2596 */
2597
2598 while ( *(p+1) && (*(p+1) == *p)) {
2599 p++;
2600 matchcount--;
2601 }
2602
2603 if ( matchcount <= 0 )
2604 return False;
2605 }
2606
2607 str--; /* We've eaten the match char after the '*' */
2608
2609 if(unix_do_match(p, str))
2610 return True;
2611
2612 if(!*str)
2613 return False;
2614 else
2615 str++;
2616 }
2617 return False;
2618
2619 default:
2620 if(*str != *p)
2621 return False;
2622 str++;
2623 p++;
2624 break;
2625 }
2626 }
2627
2628 if(!*p && !*str)
2629 return True;
2630
2631 if (!*p && str[0] == '.' && str[1] == 0)
2632 return(True);
2633
2634 if (!*str && *p == '?') {
2635 while (*p == '?')
2636 p++;
2637 return(!*p);
2638 }
2639
2640 if(!*str && (*p == '*' && p[1] == '\0'))
2641 return True;
2642
2643 return False;
2644 }
2645
2646 /*******************************************************************
2647 Simple case insensitive interface to a UNIX wildcard matcher.
2648 *******************************************************************/
2649
2650 BOOL unix_wild_match(const char *pattern, const char *string)
2651 {
2652 pstring p2, s2;
2653 char *p;
2654
2655 pstrcpy(p2, pattern);
2656 pstrcpy(s2, string);
2657 strlower_m(p2);
2658 strlower_m(s2);
2659
2660 /* Remove any *? and ** from the pattern as they are meaningless */
2661 for(p = p2; *p; p++)
2662 while( *p == '*' && (p[1] == '?' ||p[1] == '*'))
2663 pstrcpy( &p[1], &p[2]);
2664
2665 if (strequal(p2,"*"))
2666 return True;
2667
2668 return unix_do_match(p2, s2) == 0;
2669 }
2670
2671 /**********************************************************************
2672 Converts a name to a fully qalified domain name.
2673 ***********************************************************************/
2674
2675 void name_to_fqdn(fstring fqdn, const char *name)
2676 {
2677 struct hostent *hp = sys_gethostbyname(name);
2678 if ( hp && hp->h_name && *hp->h_name ) {
2679 DEBUG(10,("name_to_fqdn: lookup for %s -> %s.\n", name, hp->h_name));
2680 fstrcpy(fqdn,hp->h_name);
2681 } else {
2682 DEBUG(10,("name_to_fqdn: lookup for %s failed.\n", name));
2683 fstrcpy(fqdn, name);
2684 }
2685 }
2686
2687 /**********************************************************************
2688 Extension to talloc_get_type: Abort on type mismatch
2689 ***********************************************************************/
2690
2691 void *talloc_check_name_abort(const void *ptr, const char *name)
2692 {
2693 void *result;
2694
2695 if (ptr == NULL)
2696 return NULL;
2697
2698 result = talloc_check_name(ptr, name);
2699 if (result != NULL)
2700 return result;
2701
2702 DEBUG(0, ("Talloc type mismatch, expected %s, got %s\n",
2703 name, talloc_get_name(ptr)));
2704 smb_panic("aborting");
2705 /* Keep the compiler happy */
2706 return NULL;
2707 }
2708
2709
2710 #ifdef __INSURE__
2711
2712 /*******************************************************************
2713 This routine is a trick to immediately catch errors when debugging
2714 with insure. A xterm with a gdb is popped up when insure catches
2715 a error. It is Linux specific.
2716 ********************************************************************/
2717
2718 int _Insure_trap_error(int a1, int a2, int a3, int a4, int a5, int a6)
2719 {
2720 static int (*fn)();
2721 int ret;
2722 char pidstr[10];
2723 /* you can get /usr/bin/backtrace from
2724 http://samba.org/ftp/unpacked/junkcode/backtrace */
2725 pstring cmd = "/usr/bin/backtrace %d";
2726
2727 slprintf(pidstr, sizeof(pidstr)-1, "%d", sys_getpid());
2728 pstring_sub(cmd, "%d", pidstr);
2729
2730 if (!fn) {
2731 static void *h;
2732 h = dlopen("/usr/local/parasoft/insure++lite/lib.linux2/libinsure.so", RTLD_LAZY);
2733 fn = dlsym(h, "_Insure_trap_error");
2734
2735 if (!h || h == _Insure_trap_error) {
2736 h = dlopen("/usr/local/parasoft/lib.linux2/libinsure.so", RTLD_LAZY);
2737 fn = dlsym(h, "_Insure_trap_error");
2738 }
2739 }
2740
2741 ret = fn(a1, a2, a3, a4, a5, a6);
2742
2743 system(cmd);
2744
2745 return ret;
2746 }
2747 #endif
2748
2749 uint32 map_share_mode_to_deny_mode(uint32 share_access, uint32 private_options)
2750 {
2751 switch (share_access & ~FILE_SHARE_DELETE) {
2752 case FILE_SHARE_NONE:
2753 return DENY_ALL;
2754 case FILE_SHARE_READ:
2755 return DENY_WRITE;
2756 case FILE_SHARE_WRITE:
2757 return DENY_READ;
2758 case FILE_SHARE_READ|FILE_SHARE_WRITE:
2759 return DENY_NONE;
2760 }
2761 if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) {
2762 return DENY_DOS;
2763 } else if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_FCB) {
2764 return DENY_FCB;
2765 }
2766
2767 return (uint32)-1;
2768 }
2769
2770 pid_t procid_to_pid(const struct process_id *proc)
2771 {
2772 return proc->pid;
2773 }
2774
2775 struct process_id pid_to_procid(pid_t pid)
2776 {
2777 struct process_id result;
2778 result.pid = pid;
2779 return result;
2780 }
2781
2782 struct process_id procid_self(void)
2783 {
2784 return pid_to_procid(sys_getpid());
2785 }
2786
2787 BOOL procid_equal(const struct process_id *p1, const struct process_id *p2)
2788 {
2789 return (p1->pid == p2->pid);
2790 }
2791
2792 BOOL procid_is_me(const struct process_id *pid)
2793 {
2794 return (pid->pid == sys_getpid());
2795 }
2796
2797 struct process_id interpret_pid(const char *pid_string)
2798 {
2799 return pid_to_procid(atoi(pid_string));
2800 }
2801
2802 char *procid_str_static(const struct process_id *pid)
2803 {
2804 static fstring str;
2805 fstr_sprintf(str, "%d", pid->pid);
2806 return str;
2807 }
2808
2809 char *procid_str(TALLOC_CTX *mem_ctx, const struct process_id *pid)
2810 {
2811 return talloc_strdup(mem_ctx, procid_str_static(pid));
2812 }
2813
2814 BOOL procid_valid(const struct process_id *pid)
2815 {
2816 return (pid->pid != -1);
2817 }
2818
2819 BOOL procid_is_local(const struct process_id *pid)
2820 {
2821 return True;
2822 }