source: trunk/src/sh_utils.c@ 526

Last change on this file since 526 was 504, checked in by katerina, 9 years ago

Fix for ticket #399 (spurious errors raised by cppcheck).
File size: 54.4 KB
Line 
1/* SAMHAIN file system integrity testing */
2/* Copyright (C) 1999, 2000 Rainer Wichmann */
3/* */
4/* This program is free software; you can redistribute it */
5/* and/or modify */
6/* it under the terms of the GNU General Public License as */
7/* published by */
8/* the Free Software Foundation; either version 2 of the License, or */
9/* (at your option) any later version. */
10/* */
11/* This program is distributed in the hope that it will be useful, */
12/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
13/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
14/* GNU General Public License for more details. */
15/* */
16/* You should have received a copy of the GNU General Public License */
17/* along with this program; if not, write to the Free Software */
18/* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
19
20#include "config_xor.h"
21
22
23#include <stdlib.h>
24#include <stdio.h>
25#include <string.h>
26#include <ctype.h>
27#include <unistd.h>
28
29#if TIME_WITH_SYS_TIME
30#include <sys/time.h>
31#include <time.h>
32#else
33#if HAVE_SYS_TIME_H
34#include <sys/time.h>
35#else
36#include <time.h>
37#endif
38#endif
39
40
41#include "samhain.h"
42#include "sh_error.h"
43#include "sh_utils.h"
44#include "sh_unix.h"
45#include "sh_tiger.h"
46#include "sh_entropy.h"
47#include "sh_pthread.h"
48
49#undef FIL__
50#define FIL__ _("sh_utils.c")
51
52UINT32 ErrFlag[2];
53
54int sh_util_flagval(const char * c, int * fval)
55{
56 SL_ENTER(_("sh_util_flagval"));
57 if (c == NULL)
58 SL_RETURN( (-1), _("sh_util_flagval"));
59 if ( c[0] == '1' || c[0] == 'y' || c[0] == 'Y' ||
60 c[0] == 't' || c[0] == 'T')
61 {
62 *fval = S_TRUE;
63 SL_RETURN( (0), _("sh_util_flagval"));
64 }
65 if ( c[0] == '0' || c[0] == 'n' || c[0] == 'N' ||
66 c[0] == 'f' || c[0] == 'F')
67 {
68 *fval = S_FALSE;
69 SL_RETURN( (0), _("sh_util_flagval"));
70 }
71 SL_RETURN( (-1), _("sh_util_flagval"));
72}
73
74int sh_util_timeout_check (SH_TIMEOUT * sh_timer)
75{
76 UINT64 now = (UINT64) time(NULL);
77 UINT64 dif;
78
79 if (sh_timer->flag_ok == S_FALSE)
80 {
81 /* first time
82 */
83 if (sh_timer->time_last == 0)
84 {
85 sh_timer->time_last = now;
86 return S_TRUE;
87 }
88 /* later on
89 */
90 dif = now - sh_timer->time_last;
91 if (dif < sh_timer->time_dist)
92 {
93 return S_FALSE;
94 }
95 sh_timer->time_last = now;
96 return S_TRUE;
97 }
98 sh_timer->time_last = now;
99 return S_FALSE;
100}
101
102static int sh_ask_update = S_FALSE;
103
104int sh_util_set_interactive(const char * str)
105{
106 (void) str;
107
108 sh_ask_update = S_TRUE;
109 sh_unix_setnodeamon(NULL);
110
111 return 0;
112}
113
114static char * sh_update_file = NULL;
115
116int sh_util_update_file (const char * str)
117{
118 if (str)
119 {
120 if (0 == access(str, R_OK)) /* flawfinder: ignore */
121 {
122 if (NULL != sh_update_file)
123 SH_FREE(sh_update_file);
124 sh_update_file = sh_util_strdup(str);
125 sh_ask_update = S_TRUE;
126 sh_unix_setnodeamon(NULL);
127 return 0;
128 }
129 else
130 {
131 char ebuf[SH_ERRBUF_SIZE];
132 int errnum = errno;
133
134 sh_error_message(errnum, ebuf, sizeof(ebuf));
135 sh_error_handle (SH_ERR_ERR, FIL__, __LINE__, errnum, MSG_E_SUBGEN,
136 ebuf, _("sh_util_update_file") );
137
138 return -1;
139 }
140 }
141
142 return -1;
143}
144
145
146#if !defined(STDIN_FILENO)
147#define STDIN_FILENO 0
148#endif
149#if !defined(STDERR_FILENO)
150#define STDERR_FILENO 0
151#endif
152
153/* Returns S_FALSE if no update desired
154 */
155int sh_util_update_checkfile(const char * path)
156{
157 FILE * fd = fopen(sh_update_file, "r");
158 char * line;
159
160 if (!fd)
161 {
162 uid_t euid;
163 int errnum = errno;
164 sl_get_euid(&euid);
165 sh_error_handle (SH_ERR_ERR, FIL__, __LINE__, errnum, MSG_NOACCESS,
166 (long) euid, sh_update_file);
167 aud_exit (FIL__, __LINE__, EXIT_FAILURE);
168 return S_FALSE;
169 }
170
171 line = SH_ALLOC(8192);
172
173 while (NULL != fgets(line, 8192, fd))
174 {
175 char * nl = strrchr(line, '\n');
176
177 if (nl)
178 {
179 *nl = '\0';
180
181 /* Check for MS Windows line terminator
182 */
183 if (nl > line) --nl;
184 if (*nl == '\r')
185 *nl = '\0';
186 }
187
188 if (0 == sl_strcmp(line, path))
189 {
190 SH_FREE(line);
191 fclose(fd);
192 return S_TRUE;
193 }
194 }
195 SH_FREE(line);
196 fclose(fd);
197 return S_FALSE;
198}
199
200/* Returns S_FALSE if no update desired
201 */
202int sh_util_ask_update(const char * path)
203{
204 int inchar, c;
205 int i = S_TRUE;
206 char * tmp = NULL;
207
208 SL_ENTER(_("sh_util_ask_update"));
209
210 if (sh_ask_update != S_TRUE)
211 {
212 SL_RETURN(i, _("sh_util_ask_update"));
213 }
214
215 if (sh_update_file)
216 {
217 i = sh_util_update_checkfile(path);
218 SL_RETURN(i, _("sh_util_ask_update"));
219 }
220
221#ifdef HAVE_TTYNAME
222 if (!ttyname(STDIN_FILENO))
223 {
224 if (NULL != ttyname(STDERR_FILENO))
225 {
226 /* cppcheck-suppress leakReturnValNotUsed */
227 if (NULL == freopen(ttyname(STDERR_FILENO), "r", stdin))
228 {
229 sh_error_handle ((-1), FIL__, __LINE__, 0,
230 MSG_E_SUBGEN,
231 _("Cannot continue: stdin is not a terminal"),
232 _("sh_util_ask_update"));
233 exit(EXIT_FAILURE);
234 }
235 }
236 else
237 {
238 sh_error_handle ((-1), FIL__, __LINE__, 0,
239 MSG_E_SUBGEN,
240 _("Cannot continue: stdin is not a terminal"),
241 _("sh_util_ask_update"));
242 exit(EXIT_FAILURE);
243 }
244 }
245#endif
246
247 if (sh_ask_update == S_TRUE)
248 {
249 tmp = sh_util_safe_name (path);
250 fprintf (stderr, _("Update %s [Y/n] ? "), tmp);
251 SH_FREE(tmp);
252 while (1 == 1)
253 {
254 c = fgetc(stdin); inchar = c;
255 /*@+charintliteral@*/
256 while (c != '\n' && c != EOF)
257 c = fgetc(stdin);
258 /* fprintf(stderr, "CHAR (1): %c\n", inchar); */
259 if (inchar == 'Y' || inchar == 'y' || inchar == '\n')
260 {
261 break;
262 }
263 else if (inchar == 'n' || inchar == 'N')
264 {
265 i = S_FALSE;
266 break;
267 }
268 else
269 {
270 fprintf(stderr, "%s", _("Please answer y(es) or n(o)\n"));
271 }
272 /*@-charintliteral@*/
273 }
274 }
275
276 SL_RETURN(i, _("sh_util_ask_update"));
277}
278
279int sh_util_hidesetup(const char * c)
280{
281 int i;
282 SL_ENTER(_("sh_util_hidesetup"));
283 i = sh_util_flagval(c, &(sh.flag.hidefile));
284
285 SL_RETURN(i, _("sh_util_hidesetup"));
286}
287
288char * sh_util_acl_compact(char * buf, ssize_t len)
289{
290 unsigned char * p = (unsigned char *) buf;
291 int state = 0;
292 ssize_t rem = 0;
293 char * out;
294
295 SH_VALIDATE_NE(buf, NULL);
296 SH_VALIDATE_GE(len, 0);
297
298 out = SH_ALLOC(len + 1);
299
300 while (*p != '\0') {
301
302 /* -- not at start or after newline
303 */
304 if (state == 1) {
305 if (*p == '\n' || *p == ' ' || *p == '\t' || *p == '#') {
306 while (*p != '\n') {
307 ++p;
308 if (*p == '\0') {
309 goto exit_it;
310 }
311 }
312 out[rem] = ','; ++rem; /* <-- ensures (rem > 0) is true */
313 while (p[1] == '\n') ++p; /* scan over consecutive newlines */
314 state = 0;
315 if (p[1] == '\0') {
316 out[rem-1] = '\0'; /* rem > 0 because of 4 lines above */
317 break;
318 }
319 }
320 else {
321 if (*p <= 0x7F && isgraph((int) *p)) {
322 out[rem] = (char) *p; ++rem;
323 }
324 }
325 }
326
327 /* -- at start or after newline
328 */
329 else /* if (state == 0) */ {
330 if (0 == strncmp((char *) p, "user", 4)) {
331 out[rem] = 'u'; ++rem;
332 p += 3;
333 } else if (0 == strncmp((char *) p, "group", 5)) {
334 out[rem] = 'g'; ++rem;
335 p += 4;
336 } else if (0 == strncmp((char *) p, "mask", 4)) {
337 out[rem] = 'm'; ++rem;
338 p += 3;
339 } else if (0 == strncmp((char *) p, "other", 5)) {
340 out[rem] = 'o';
341 p += 4; ++rem;
342 } else if (*p == '\0') {
343 if (rem > 0) { out[rem-1] = '\0'; }
344 break;
345 } else {
346 if (*p <= 0x7F && isprint((int) *p)) {
347 out[rem] = (char) *p; ++rem;
348 }
349 }
350 state = 1;
351 }
352 ++p;
353 }
354 exit_it:
355 out[rem] = '\0';
356 return out;
357}
358
359
360char * sh_util_strdup_l (const char * str, size_t len)
361{
362 char * p = NULL;
363
364 SL_ENTER(_("sh_util_strdup_l"));
365
366 SH_VALIDATE_NE(str, NULL);
367 SH_VALIDATE_NE(len, 0);
368
369 if (str && sl_ok_adds (len, 1))
370 {
371 p = SH_ALLOC (len + 1);
372 (void) memcpy (p, str, len+1);
373 }
374 else
375 {
376 safe_fatal(_("integer overflow in sh_util_strdup_l"), FIL__, __LINE__);
377 }
378 SL_RETURN( p, _("sh_util_strdup_l"));
379}
380
381char * sh_util_strdup (const char * str)
382{
383 char * p = NULL;
384 size_t len;
385
386 SL_ENTER(_("sh_util_strdup"));
387
388 SH_VALIDATE_NE(str, NULL);
389
390 if (str)
391 {
392 len = sl_strlen(str);
393 p = SH_ALLOC (len + 1);
394 (void) memcpy (p, str, len+1);
395 }
396 SL_RETURN( p, _("sh_util_strdup"));
397}
398
399char * sh_util_strdup_track (const char * str, char * file, int line)
400{
401 char * p = NULL;
402 size_t len;
403
404 SL_ENTER(_("sh_util_strdup_track"));
405
406 SH_VALIDATE_NE(str, NULL);
407
408 if (str)
409 {
410 len = sl_strlen(str);
411 p = SH_OALLOC (len + 1, file, line);
412 (void) memcpy (p, str, len+1);
413 }
414 SL_RETURN( p, _("sh_util_strdup_track"));
415}
416
417/* by the eircom.net computer incident
418 * response team
419 */
420char * sh_util_strsep (char **str, const char *delim)
421{
422 char *ret, *c;
423 const char *d;
424
425 SL_ENTER(_("sh_util_strsep"));
426 ret = *str;
427
428 SH_VALIDATE_NE(ret, NULL);
429
430 if (*str)
431 {
432 for (c = *str; *c != '\0'; c++) {
433 for (d = delim; *d != '\0'; d++) {
434 if (*c == *d) {
435 *c = '\0';
436 *str = c + 1;
437 SL_RETURN(ret, _("sh_util_strsep"));
438 }
439 }
440 }
441 }
442
443 /* If we get to here, there's no delimiters in the string */
444 *str = NULL;
445 SL_RETURN(ret, _("sh_util_strsep"));
446}
447
448
449/* returned string must be free'd by caller.
450 */
451char * sh_util_formatted (const char * formatt, st_format * ftab)
452{
453 struct tm * time_ptr;
454 size_t size;
455 size_t isiz;
456 char * fmt = NULL;
457 char * p;
458 char * q;
459 char * outstr;
460 int i;
461 int j;
462 time_t inpp;
463
464 char * clist[16] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
465 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL };
466 int nn = 0;
467
468 SL_ENTER(_("sh_util_formatted"));
469
470 if (formatt == NULL || ftab == NULL || *formatt == '\0')
471 SL_RETURN(NULL, _("sh_util_formatted"));
472
473 /* -- save the format (we overwrite it !!) --
474 */
475 size = sl_strlen(formatt);
476
477 if (!sl_ok_adds(size, 1))
478 SL_RETURN(NULL, _("sh_util_formatted"));
479
480 ++size;
481 fmt = SH_ALLOC(size);
482 (void) sl_strlcpy(fmt, formatt, size);
483
484 p = fmt;
485
486 j = 0;
487 while (ftab[j].fchar != '\0') {
488 if (ftab[j].type != S_FMT_STRING)
489 ftab[j].data_str = NULL;
490 ++j;
491 }
492
493 while (p != NULL && *p != '\0' && NULL != (q = strchr(p, '%')))
494 {
495 ++q;
496
497 /* fprintf(stderr, "p == %s q == %s\n", p, q); */
498
499 /* -- end of string is a '%' --
500 */
501 if (*q == '\0')
502 {
503 --q;
504 *q = '\0';
505 break;
506 }
507
508 i = 0;
509 j = 0;
510
511 /* -- search the format char in input table --
512 * put (nn < 16) here -> all remaining %foo will be
513 * converted to %%
514 */
515 while (ftab[j].fchar != '\0' && nn < 16)
516 {
517 if (ftab[j].fchar == *q)
518 {
519 /* -- Convert it to a string format (%s). --
520 */
521 *q = 's'
522;
523 i = 1;
524
525 switch(ftab[j].type) {
526
527 case S_FMT_STRING:
528 {
529 isiz = sl_strlen(ftab[j].data_str);
530 if (isiz > 0 && sl_ok_adds(size, isiz))
531 {
532 size += isiz;
533 clist[nn] = ftab[j].data_str;
534 ++nn;
535 }
536 else
537 *q = '%';
538 goto endsrch;
539 }
540 break;
541
542 case S_FMT_ULONG:
543 {
544 ftab[j].data_str = (char *) SH_ALLOC(64);
545 /*@-bufferoverflowhigh@*/
546 sprintf (ftab[j].data_str, "%lu", /* known to fit */
547 ftab[j].data_ulong);
548 /*@+bufferoverflowhigh@*/
549 isiz = sl_strlen(ftab[j].data_str);
550 if (isiz > 0 && sl_ok_adds(size, isiz))
551 {
552 size += isiz;
553 clist[nn] = ftab[j].data_str;
554 ++nn;
555 }
556 else
557 *q = '%';
558 goto endsrch;
559 }
560 break;
561
562 case S_FMT_LONG:
563 {
564 ftab[j].data_str = (char *) SH_ALLOC(64);
565 /*@-bufferoverflowhigh@*/
566 sprintf (ftab[j].data_str, "%ld", /* known to fit */
567 ftab[j].data_long);
568 /*@+bufferoverflowhigh@*/
569 isiz = sl_strlen(ftab[j].data_str);
570 if (isiz > 0 && sl_ok_adds(size, isiz))
571 {
572 size += isiz;
573 clist[nn] = ftab[j].data_str;
574 ++nn;
575 }
576 else
577 *q = '%';
578 goto endsrch;
579 }
580 break;
581
582 case S_FMT_TIME:
583 {
584 ftab[j].data_str = (char *) SH_ALLOC(64);
585 inpp = (time_t)ftab[j].data_ulong;
586 if (inpp != 0)
587 {
588 time_ptr = localtime (&(inpp));
589 if (time_ptr != NULL)
590 (void) strftime(ftab[j].data_str, 64,
591 _("%d-%m-%Y %H:%M:%S"), time_ptr);
592 else
593 (void) sl_strlcpy(ftab[j].data_str,
594 _("00-00-0000 00:00:00"), 64);
595 }
596 else
597 {
598 (void) sl_strlcpy(ftab[j].data_str,
599 _("(None)"), 64);
600 }
601 isiz = sl_strlen(ftab[j].data_str);
602 if (isiz > 0 && sl_ok_adds(size, isiz))
603 {
604 size += isiz;
605 clist[nn] = ftab[j].data_str;
606 ++nn;
607 }
608 else
609 *q = '%';
610 goto endsrch;
611 }
612 break;
613
614 default:
615 /* do nothing */;
616 }
617
618 }
619 ++j;
620 }
621
622 endsrch:
623
624 p = q;
625
626 /* -- not found -- */
627 if (i == 0)
628 {
629 *q = '%';
630 ++p;
631 }
632
633 }
634
635 /* -- Format string evaluated.
636 clist[] List of strings
637 size Total size of format string + clist[] strings
638 -- */
639
640 /* -- closing '\0' --
641 */
642 if (sl_ok_adds(size, 1))
643 size++;
644 outstr = (char *) SH_ALLOC(size);
645
646 /* -- print it --
647 */
648 (void) sl_snprintf( outstr, size, fmt,
649 clist[0], clist[1], clist[2], clist[3],
650 clist[4], clist[5], clist[6], clist[7],
651 clist[8], clist[9], clist[10], clist[11],
652 clist[12], clist[13], clist[14], clist[15]);
653 outstr[size-1] = '\0';
654
655 /* -- cleanup --
656 */
657 j = 0;
658 while (ftab[j].fchar != '\0') {
659 if (ftab[j].type != S_FMT_STRING && ftab[j].data_str != NULL)
660 SH_FREE(ftab[j].data_str);
661 ++j;
662 }
663 SH_FREE(fmt);
664
665 SL_RETURN(outstr, _("sh_util_formatted"));
666}
667
668/* read a hexchar, return int value (0-15)
669 * can't inline (AIX)
670 */
671int sh_util_hexchar( const char c )
672{
673 /*@+charint@*/
674 if ( c >= '0' && c <= '9' )
675 return c - '0';
676 else if ( c >= 'a' && c <= 'f' )
677 return c - 'a' + 10;
678 else if ( c >= 'A' && c <= 'F' )
679 return c - 'A' + 10;
680 else return -1;
681 /*@-charint@*/
682}
683
684char * sh_util_charhex( unsigned char i , char * i2h)
685{
686 int j, k;
687
688 j = i / 16;
689 k = i - (j*16);
690
691 if (j < 10) i2h[0] = '0'+j;
692 else i2h[0] = 'A'+(j-10);
693
694 if (k < 10) i2h[1] = '0'+k;
695 else i2h[1] = 'A'+(k-10);
696
697 return i2h;
698}
699
700/* read a hexadecimal key, convert to binary
701 */
702int sh_util_hextobinary (char * binary, const char * hex, int bytes)
703{
704 int i = 0, j, k, l = 0;
705 char c;
706
707#define SH_HEXCHAR(x, y) \
708 c = (x); \
709 if ( c >= '0' && c <= '9' ) \
710 y = c - '0'; \
711 else if ( c >= 'a' && c <= 'f' ) \
712 y = c - 'a' + 10; \
713 else if ( c >= 'A' && c <= 'F' ) \
714 y = c - 'A' + 10; \
715 else \
716 SL_RETURN((-1), _("sh_util_hextobinary"))
717
718
719 SL_ENTER(_("sh_util_hextobinary"));
720
721 if (bytes < 2)
722 SL_RETURN((-1), _("sh_util_hextobinary"));
723
724 while (i < (bytes-1))
725 {
726 SH_HEXCHAR(hex[i], k);
727 SH_HEXCHAR(hex[i+1], j);
728
729 binary[l] = (char)(k * 16 + j);
730 ++l; i+= 2;
731 }
732
733 SL_RETURN((0), _("sh_util_hextobinary"));
734}
735
736static void copy_four (unsigned char * dest, UINT32 in)
737{
738 UINT32 i, j;
739 int count;
740
741 SL_ENTER(_("copy_four"));
742 for (count = 0; count < 4; ++count)
743 {
744 i = in / 256;
745 j = in - (i*256);
746 dest[count] = (unsigned char) j;
747 in = i;
748 }
749 SL_RET0(_("copy_four"));
750}
751
752/* compute HMAC-TIGER
753 */
754static char * sh_util_hmac_tiger (char * hexkey,
755 char * text, size_t textlen,
756 char * res, size_t len)
757{
758 static char opad[KEY_BLOCK] = {
759 (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C,
760 (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C,
761 (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C,
762 (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C
763 };
764 static char ipad[KEY_BLOCK] = {
765 (char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36,
766 (char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36,
767 (char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36,
768 (char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36
769 };
770 static char zap[KEY_BLOCK] = {
771 (char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00,
772 (char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00,
773 (char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00,
774 (char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00
775 };
776 char K[KEY_BLOCK];
777 char outer[KEY_BLOCK];
778 char * inner;
779 UINT32 * h1;
780 UINT32 * h2;
781 UINT32 cc[KEY_LEN/4];
782 UINT32 kbuf[KEY_BYT/sizeof(UINT32)];
783 char hashbuf[KEYBUF_SIZE];
784
785 int result;
786 size_t i;
787
788 SL_ENTER(_("sh_util_hmac_tiger"));
789
790 ASSERT((KEY_BLOCK <= (KEY_LEN/2)), _("KEY_BLOCK <= (KEY_LEN/2)"));
791
792 memcpy (K, zap, KEY_BLOCK);
793
794 result = sh_util_hextobinary (K, hexkey, KEY_LEN);
795
796 ASSERT((result >= 0), _("result >= 0"));
797
798 if ((result >= 0) && sl_ok_adds(textlen, KEY_BLOCK))
799 {
800 inner = (char *) SH_ALLOC (textlen + KEY_BLOCK);
801
802 for (i = 0; i < KEY_BLOCK; ++i)
803 {
804 outer[i] = K[i] ^ opad[i];
805 inner[i] = K[i] ^ ipad[i];
806 }
807 for (i = KEY_BLOCK; i < (KEY_BLOCK+textlen); ++i)
808 {
809 inner[i] = text[i - KEY_BLOCK];
810 }
811 }
812 else
813 {
814 sh_error_handle((-1), FIL__, __LINE__, -1, MSG_E_SUBGEN,
815 _("integer overflow"),
816 _("sh_util_hmac_tiger"));
817 (void) sh_tiger_hash (NULL, TIGER_DATA, 0, hashbuf, sizeof(hashbuf));
818 sl_strlcpy(res, hashbuf, len);
819 SL_RETURN(res, _("sh_util_hmac_tiger"));
820 }
821
822 /* now compute the hash
823 */
824 h1 = sh_tiger_hash_uint32 ( outer, TIGER_DATA, KEY_BLOCK,
825 kbuf, KEY_BYT/sizeof(UINT32));
826 for (i = 0; i < (KEY_LEN/8); ++i)
827 copy_four ( (unsigned char *) &(cc[i]), h1[i]);
828
829 h2 = sh_tiger_hash_uint32 ( inner, TIGER_DATA,
830 (unsigned long) KEY_BLOCK+textlen,
831 kbuf, KEY_BYT/sizeof(UINT32));
832 for (i = KEY_LEN/8; i < (KEY_LEN/4); ++i)
833 copy_four ( (unsigned char *) &(cc[i]), h2[i - (KEY_LEN/8)]);
834
835 SH_FREE(inner);
836
837 (void) sh_tiger_hash ((char *) &cc[0],
838 TIGER_DATA,
839 (unsigned long) (KEY_LEN/4 * sizeof(UINT32)),
840 hashbuf, sizeof(hashbuf));
841
842 sl_strlcpy(res, hashbuf, len);
843 SL_RETURN(res, _("sh_util_hmac_tiger"));
844}
845
846static char * sh_util_hash_tiger ( char * hexkey,
847 char * text, size_t textlen,
848 char * res, size_t len)
849{
850 char h2[2*KEY_LEN+1];
851 char hashbuf[KEYBUF_SIZE];
852
853 SL_ENTER(_("sh_util_hash_tiger"));
854
855 (void) sl_strlcpy(h2, hexkey, KEY_LEN+1);
856 (void) sl_strlcat(h2,
857 sh_tiger_hash(text, TIGER_DATA,
858 (unsigned long) textlen,
859 hashbuf, sizeof(hashbuf)),
860 2*KEY_LEN+1
861 );
862
863 (void) sh_tiger_hash(h2, TIGER_DATA, 2*KEY_LEN, hashbuf, sizeof(hashbuf));
864
865 sl_strlcpy(res, hashbuf, len);
866 SL_RETURN(res, _("sh_util_hash_tiger"));
867}
868
869/* --- compute signature on data ---
870 */
871#define TYPE_HMAC 0
872#define TYPE_HASH 1
873
874static int sigtype = TYPE_HMAC;
875
876int sh_util_sigtype (const char * c)
877{
878 SL_ENTER(_("sh_util_sigtype"));
879 if (c == NULL)
880 SL_RETURN( -1, _("sh_util_sigtype"));
881
882 if (0 == strcmp(_("HMAC-TIGER"), c))
883 sigtype = TYPE_HMAC;
884 else if (0 == strcmp(_("HASH-TIGER"), c))
885 sigtype = TYPE_HASH;
886 else
887 SL_RETURN( -1, _("sh_util_sigtype"));
888
889 SL_RETURN( 0, _("sh_util_sigtype"));
890}
891
892char * sh_util_siggen (char * hexkey,
893 char * text, size_t textlen,
894 char * res, size_t len)
895{
896 char * p;
897
898 SL_ENTER(_("sh_util_siggen"));
899 if (sigtype == TYPE_HMAC)
900 p = sh_util_hmac_tiger (hexkey,
901 text, textlen, res, len);
902 else
903 p = sh_util_hash_tiger (hexkey,
904 text, textlen, res, len);
905 SL_RETURN(p, _("sh_util_siggen"));
906}
907
908
909/* a simple compressor
910 */
911size_t sh_util_compress (char * dest, char * src, size_t dest_size)
912{
913 char * add;
914 char * get;
915 size_t count = 0;
916 size_t dest_end;
917
918 SL_ENTER(_("sh_util_compress"));
919
920 if (dest_size == 0)
921 SL_RETURN((0), _("sh_util_compress"));
922
923 if ((dest == NULL) || (src == NULL))
924 SL_RETURN((0), _("sh_util_compress"));
925
926 dest_end = sl_strlen(dest);
927
928 if (dest_end > dest_size)
929 SL_RETURN((0), _("sh_util_compress"));
930
931 add = &dest[dest_end];
932 get = src;
933
934 while (count < (dest_size-dest_end))
935 {
936 if (isalnum((int) *get))
937 {
938 *add = *get;
939 ++add;
940 ++count;
941 }
942 ++get;
943 if (*get == '\0' && (count < (dest_size-dest_end)))
944 /* end of src reached */
945 {
946 *add = *get; /* copy the '\0' */
947 break; /* and stop copying */
948 }
949 }
950
951 dest[dest_size-1] = '\0'; /* paranoia */
952 SL_RETURN((count), _("sh_util_compress")); /* no of chars copied */
953}
954
955
956/* copy the four least significant bytes
957 */
958void sh_util_cpylong (char * dest, const char * src, int len )
959{
960 int i, j;
961 union
962 {
963 long l;
964 char c[sizeof(long)];
965 } u;
966#ifdef WORDS_BIGENDIAN
967 unsigned char swap;
968 unsigned char * ii = (unsigned char *) dest;
969#endif
970
971 SL_ENTER(_("sh_util_cpylong"));
972
973 u.l = 1;
974
975 /* MSB is first
976 */
977 if (sizeof(long)>4 &&/*@+charint@*/(u.c[sizeof(long)-1] == 1)/*@-charint@*/)
978 {
979 j = (int) (sizeof(long)-4);
980 for (i = 0; i < j; ++i) ++src;
981 }
982
983 i = 0;
984
985 while (i < 4)
986 {
987 *dest = (*src);
988 ++dest; ++src;
989 if (i == (len-1)) break;
990 ++i;
991 }
992#ifdef WORDS_BIGENDIAN
993 swap = ii[0]; ii[0] = ii[3]; ii[3] = swap;
994 swap = ii[1]; ii[1] = ii[2]; ii[2] = swap;
995#endif
996 SL_RET0(_("sh_util_cpylong"));
997}
998
999/* This is a maximally equidistributed combined Tausworthe
1000 * generator. The sequence is,
1001 *
1002 * x_n = (s1_n ^ s2_n ^ s3_n)
1003 *
1004 * s1_{n+1} = (((s1_n & 4294967294) <<12) ^ (((s1_n <<13) ^ s1_n) >>19))
1005 * s2_{n+1} = (((s2_n & 4294967288) << 4) ^ (((s2_n << 2) ^ s2_n) >>25))
1006 * s3_{n+1} = (((s3_n & 4294967280) <<17) ^ (((s3_n << 3) ^ s3_n) >>11))
1007 *
1008 * computed modulo 2^32. In the three formulas above '^' means
1009 * exclusive-or (C-notation), not exponentiation. Note that the
1010 * algorithm relies on the properties of 32-bit unsigned integers (it
1011 * is formally defined on bit-vectors of length 32).
1012 *
1013 * Stolen from GSL (GNU scientific library) and modified somewhat.
1014 * I am using UINT32, which is guaranteed to be 32 bits. Also made
1015 * sure that the initialization vector is valid.
1016 */
1017
1018
1019/* interval [0, 4294967295]
1020 */
1021static UINT32 taus_get_long (void *vstate)
1022{
1023 UINT32 * state = (UINT32 *) vstate;
1024
1025 /*
1026 if (skey->rngI == BAD)
1027 (void)taus_seed();
1028 */
1029
1030#define TAUSWORTHE(s,a,b,c,d) ((s &c) <<d) ^ (((s <<a) ^s) >>b)
1031 /*@+ignorequals@*/
1032 state[0] = TAUSWORTHE (state[0], 13, 19, 4294967294UL, 12);
1033 state[1] = TAUSWORTHE (state[1], 2, 25, 4294967288UL, 4);
1034 state[2] = TAUSWORTHE (state[2], 3, 11, 4294967280UL, 17);
1035 /*@-ignorequals@*/
1036 return (state[0] ^ state[1] ^ state[2]);
1037}
1038
1039/* Hide the internal state of the PRNG by using its output as
1040 * input for a one-way hash function.
1041 */
1042
1043UINT32 taus_get ()
1044{
1045#define TAUS_SAMPLE 12
1046
1047 UINT32 taus_svec[TAUS_SAMPLE];
1048 UINT32 retval;
1049 UINT32 * res;
1050 UINT32 * res_vec = &(skey->res_vec[0]);
1051 static int res_num = 0;
1052 register int i;
1053 UINT32 kbuf[KEY_BYT/sizeof(UINT32)];
1054
1055 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1056 if (res_num > 0)
1057 {
1058 retval = res_vec[res_num];
1059 res_num = (res_num == 5) ? 0 : (res_num + 1);
1060 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey); /* alternative path */
1061 return retval;
1062 }
1063 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1064
1065 (void)taus_seed();
1066
1067 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1068 for (i = 0; i < (TAUS_SAMPLE/3); ++i)
1069 {
1070 taus_svec[i*3] = taus_get_long (&(skey->rng0[0]));
1071 taus_svec[i*3+1] = taus_get_long (&(skey->rng1[0]));
1072 taus_svec[i*3+2] = taus_get_long (&(skey->rng2[0]));
1073 }
1074 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1075
1076 res = sh_tiger_hash_uint32 ( (char *) &taus_svec[0],
1077 TIGER_DATA,
1078 (unsigned long)(TAUS_SAMPLE * sizeof(UINT32)),
1079 kbuf, KEY_BYT/sizeof(UINT32));
1080
1081 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1082 for (i = 1; i < 6; ++i)
1083 {
1084 res_vec[i] = res[i];
1085 }
1086 retval = res[0];
1087 res_num = 1;
1088 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1089
1090 memset(taus_svec, '\0', TAUS_SAMPLE * sizeof(UINT32));
1091
1092 return retval;
1093}
1094
1095/* interval [0,1)
1096 */
1097double taus_get_double (void *vstate)
1098{
1099 return taus_get_long (vstate) / (4294967296.0 + 1.0) ;
1100}
1101
1102#define LCG(n) ((69069 * n) & 0xffffffffUL)
1103
1104/* TAKE CARE: state[0], state[1], state[2] must be > 2,8,16, respectively
1105 */
1106static void taus_set_from_ulong (void *vstate, unsigned long int s)
1107{
1108 UINT32 *state = (UINT32 *) vstate;
1109
1110 if (s == 0)
1111 s = 1; /* default seed is 1 */
1112
1113 state[0] = (UINT32)(LCG (s) | (UINT32) 0x03);
1114 state[1] = (UINT32)(LCG (state[0]) | (UINT32) 0x09);
1115 state[2] = (UINT32)(LCG (state[1]) | (UINT32) 0x17);
1116
1117 /* 'warm up'
1118 */
1119 (void) taus_get_long (state);
1120 (void) taus_get_long (state);
1121 (void) taus_get_long (state);
1122 (void) taus_get_long (state);
1123 (void) taus_get_long (state);
1124 (void) taus_get_long (state);
1125
1126 return;
1127}
1128
1129static void taus_set_from_state (void *vstate, void *init_state)
1130{
1131 UINT32 *state = (UINT32 *) vstate;
1132 UINT32 *state0 = (UINT32 *) init_state;
1133
1134 state[0] = state0[0] | (UINT32) 0x03;
1135 state[1] = state0[1] | (UINT32) 0x09;
1136 state[2] = state0[2] | (UINT32) 0x17;
1137
1138 return;
1139}
1140
1141
1142int taus_seed ()
1143{
1144 char bufx[9 * sizeof(UINT32) + 1];
1145 int status;
1146 static unsigned long seed_time = 0;
1147 static unsigned long seed_counter = 3000;
1148 unsigned long gtime;
1149
1150 SL_ENTER(_("taus_seed"));
1151
1152 if (skey->rngI == GOOD)
1153 {
1154 ++seed_counter;
1155
1156 if ( ((sh_unix_longtime () - seed_time) < 1800) &&
1157 ( seed_counter < 3000))
1158 SL_RETURN( (0), _("taus_seed"));
1159 }
1160
1161 seed_time = sh_unix_longtime ();
1162 seed_counter = 0;
1163
1164 status = sh_entropy (24, bufx);
1165
1166 if (!SL_ISERROR(status))
1167 {
1168 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1169 memcpy (&skey->rng0[0], &bufx[0], 2*sizeof(UINT32));
1170 memcpy (&skey->rng1[0], &bufx[2*sizeof(UINT32)], 2*sizeof(UINT32));
1171 memcpy (&skey->rng2[0], &bufx[4*sizeof(UINT32)], 2*sizeof(UINT32));
1172 memset (bufx, 0, 9 * sizeof(UINT32) + 1);
1173
1174 skey->rng0[2] = 0;
1175 skey->rng1[2] = 0;
1176 skey->rng2[2] = 0;
1177
1178 taus_set_from_state( &(skey->rng0[0]), &(skey->rng0[0]));
1179 taus_set_from_state( &(skey->rng1[0]), &(skey->rng1[0]));
1180 taus_set_from_state( &(skey->rng2[0]), &(skey->rng2[0]));
1181
1182 skey->rngI = GOOD;
1183 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1184 SL_RETURN( (0), _("taus_seed"));
1185 }
1186
1187 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_ES_ENT,
1188 _("sh_entropy"));
1189
1190 /* emergency backup - unsafe !
1191 */
1192#ifdef HAVE_GETTIMEOFDAY
1193 gtime = sh_unix_notime();
1194#else
1195 gtime = seed_time;
1196#endif
1197
1198 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1199 taus_set_from_ulong ( &(skey->rng0[0]), LCG (gtime) );
1200 taus_set_from_ulong ( &(skey->rng1[0]), LCG (skey->rng0[0]) );
1201 taus_set_from_ulong ( &(skey->rng2[0]), LCG (skey->rng1[0]) );
1202 skey->rngI = BAD;
1203 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1204
1205 SL_RETURN( (-1), _("taus_seed"));
1206}
1207
1208/*@+charint@*/
1209static unsigned char new_key[] = { 0xA7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xA7 };
1210/*@-charint@*/
1211static void copy_four (unsigned char * dest, UINT32 in);
1212
1213int sh_util_set_newkey (const char * new_in)
1214{
1215 size_t i, j = 0;
1216 size_t len;
1217 SL_TICKET fp;
1218 SL_TICKET fout;
1219 char * key;
1220 char * path = NULL;
1221 char * outpath = NULL;
1222 unsigned char * image = NULL;
1223 long s = 0;
1224 long ilen = 0;
1225 long ii, k = 0;
1226 UINT32 * h1;
1227 char * new = NULL;
1228
1229 if (0 != sl_is_suid())
1230 {
1231 fprintf(stderr, "%s", _("ERROR: insufficient privilege\n"));
1232 _exit (EXIT_FAILURE);
1233 /*@notreached@*/
1234 return -1; /* braindead MAC OSX compiler needs this */
1235 }
1236
1237 if (new_in == NULL || new_in[0] == '\0')
1238 {
1239 fprintf(stderr, "%s",
1240 _("ERROR: no key given\n Argument must be 'key@path'\n"));
1241 _exit (EXIT_FAILURE);
1242 /*@notreached@*/
1243 return -1;
1244 }
1245
1246 if (NULL == (new = calloc(1,strlen(new_in) + 1)))
1247 goto bail_mem;
1248 sl_strncpy(new, new_in, strlen(new_in) + 1);
1249
1250 key = new;
1251 len = strlen(new);
1252 for (i = 1; i < (len-2); ++i)
1253 {
1254 if (new[i] == '@' && new[i+1] == '/')
1255 {
1256 j = i+1; new[i] = '\0'; break;
1257 }
1258 }
1259 if (j == 0)
1260 {
1261 fprintf(stderr, "%s",
1262 _("ERROR: no path to executable given\n Argument must be 'key@path'\n"));
1263 free(new);
1264 _exit (EXIT_FAILURE);
1265 /*@notreached@*/
1266 return -1;
1267 }
1268 else
1269 path = &new[j];
1270
1271 len = strlen(path) + 1 + 4;
1272 /*@-usedef@*/
1273 if (NULL == (outpath = calloc(1,len)))
1274 goto bail_mem;
1275 /*@-usedef@*/
1276 sl_snprintf (outpath, len, _("%s.out"), path);
1277
1278 fp = sl_open_read(FIL__, __LINE__, path, SL_NOPRIV);
1279 if (SL_ISERROR(fp))
1280 {
1281 fprintf(stderr,
1282 _("ERROR: cannot open %s for read (errnum = %ld)\n"), path, fp);
1283 free(new); free (outpath);
1284 _exit (EXIT_FAILURE);
1285 /*@notreached@*/
1286 return -1;
1287 }
1288
1289 fout = sl_open_write(FIL__, __LINE__, outpath, SL_NOPRIV);
1290 if (SL_ISERROR(fout))
1291 {
1292 fprintf(stderr,
1293 _("ERROR: cannot open %s (errnum = %ld)\n"), outpath, fout);
1294 free(new); free (outpath);
1295 _exit (EXIT_FAILURE);
1296 /*@notreached@*/
1297 return -1;
1298 }
1299
1300
1301 image = calloc(1,4096);
1302 if (!image)
1303 goto bail_mem;
1304 while (0 < (ii = sl_read (fp, &image[s], 4096)))
1305 {
1306 unsigned char * ptr;
1307 ilen += ii;
1308 s += 4096;
1309 ptr = realloc (image, (size_t) (4096 + s));
1310 if (ptr)
1311 image = ptr;
1312 else
1313 { free(image); image = NULL; }
1314 if (!image)
1315 goto bail_mem;
1316 }
1317
1318 printf(_("%ld bytes read\n"), ilen);
1319
1320
1321 for (k = 0; k < (ilen - 8); ++k)
1322 {
1323 if (image[k] == new_key[0] &&
1324 image[k+1] == new_key[1] &&
1325 image[k+2] == new_key[2] &&
1326 image[k+3] == new_key[3] &&
1327 image[k+4] == new_key[4] &&
1328 image[k+5] == new_key[5] &&
1329 image[k+6] == new_key[6] &&
1330 image[k+7] == new_key[7])
1331 {
1332 UINT32 kbuf[KEY_BYT/sizeof(UINT32)];
1333
1334 printf("%s", _("old key found\n"));
1335 h1 = sh_tiger_hash_uint32 (key, TIGER_DATA,
1336 (unsigned long)strlen(key),
1337 kbuf, KEY_BYT/sizeof(UINT32));
1338 copy_four( (unsigned char *) &(image[k]), h1[0]);
1339 copy_four( (unsigned char *) &(image[k+4]), h1[1]);
1340 (void) sl_write (fout, image, ilen);
1341 (void) sl_close (fout);
1342 printf(_("new file %s written\n"), outpath);
1343 free(new); free (outpath); free(image);
1344 _exit (EXIT_SUCCESS);
1345 /*@notreached@*/
1346 return 0;
1347 }
1348 }
1349
1350 fprintf(stderr, "%s",
1351 _("ERROR: old key not found\n"));
1352 free(new); free (outpath); free(image);
1353 _exit (EXIT_FAILURE);
1354 /*@notreached@*/
1355 return -1;
1356
1357
1358 bail_mem:
1359 fprintf(stderr, "%s",
1360 _("ERROR: out of memory\n"));
1361 if (new) free(new);
1362 if (outpath) free (outpath);
1363 if (image) free (image);
1364 _exit (EXIT_FAILURE);
1365 /*@notreached@*/
1366 return -1;
1367}
1368
1369
1370
1371
1372/* A simple en-/decoder, based on Vernam cipher. We use the
1373 * message as salt to hide the key by obtaining a different one-time
1374 * pad each time.
1375 * Should be safe against a listener on the network, but not against someone
1376 * with read access to the binary.
1377 */
1378void sh_util_encode (char * data, char * salt, int mode, char fill)
1379{
1380 static char cc1[17] = N_("0123456789ABCDEF");
1381 char cc[17] = "\0";
1382 register int i, j, j1 = 0, j2 = 0, j3;
1383 char * dez;
1384 char hashbuf[KEYBUF_SIZE];
1385
1386 SL_ENTER(_("sh_util_encode"));
1387
1388 /* init
1389 */
1390 (void) sl_strlcpy( cc, _(cc1), sizeof(cc));
1391
1392 /* max 128 bits keyspace
1393 */
1394 memset (skey->vernam, (int)fill, KEY_LEN+1);
1395
1396 dez = (char *) &(skey->ErrFlag[0]);
1397 sh_util_cpylong (skey->vernam, dez, 4);
1398 dez = (char *) &(skey->ErrFlag[1]);
1399 sh_util_cpylong (&skey->vernam[4], dez, 4);
1400
1401 skey->vernam[KEY_LEN] = '\0';
1402
1403 (void) sl_strlcpy(skey->vernam,
1404 sh_tiger_hash(skey->vernam, TIGER_DATA, KEY_LEN,
1405 hashbuf, sizeof(hashbuf)),
1406 KEY_LEN+1);
1407
1408 (void) sl_strlcpy(skey->vernam,
1409 sh_util_hmac_tiger (skey->vernam, salt, strlen(salt),
1410 hashbuf, sizeof(hashbuf)),
1411 KEY_LEN+1);
1412
1413 (void) sl_strlcpy(skey->vernam,
1414 sh_util_hmac_tiger (skey->vernam, (char*) new_key, 8,
1415 hashbuf, sizeof(hashbuf)),
1416 KEY_LEN+1);
1417
1418 /* The following routine adds/subtracts data[j] and vernam[j] mod 16.
1419 */
1420 j = 0;
1421 while (j < KEY_LEN)
1422 {
1423 for (i = 0; i < 16; ++i)
1424 {
1425 if (cc[i] == data[j]) j1 = i;
1426 if (cc[i] == skey->vernam[j]) j2 = i;
1427 }
1428 if (mode == 0)
1429 {
1430 j3 = j1 + j2;
1431 if (j3 > 15) j3 -= 16;
1432 data[j] = cc[j3];
1433 }
1434 else
1435 {
1436 j3 = j1 - j2;
1437 if (j3 < 0) j3 += 16;
1438 data[j] = cc[j3];
1439 }
1440 ++j;
1441 }
1442 SL_RET0(_("sh_util_encode"));
1443}
1444
1445/* server mode
1446 */
1447int sh_util_setserver (const char * dummy)
1448{
1449 SL_ENTER(_("sh_util_setserver"));
1450
1451 (void) dummy;
1452 sh.flag.isserver = GOOD;
1453 SL_RETURN((0),_("sh_util_setserver"));
1454}
1455
1456
1457int sh_util_setlooptime (const char * str)
1458{
1459 int i = atoi (str);
1460
1461 SL_ENTER(_("sh_util_setlooptime"));
1462
1463 if (i >= 0 && i < INT_MAX) {
1464 sh.looptime = i;
1465 SL_RETURN((0),_("sh_util_setlooptime"));
1466 } else {
1467 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
1468 _("loop time"), str);
1469 SL_RETURN((-1),_("sh_util_setlooptime"));
1470 }
1471}
1472
1473#if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE)
1474int sh_util_setchecksum (const char * str)
1475{
1476 static int reject = 0;
1477
1478 SL_ENTER(_("sh_util_setchecksum"));
1479
1480 if (reject == 1)
1481 SL_RETURN((0), _("sh_util_setchecksum"));
1482 reject = 1;
1483
1484 if (sl_strncmp (str, _("init"), sizeof("init")-1) == 0)
1485 {
1486 sh.flag.checkSum = SH_CHECK_INIT;
1487 }
1488 else if (sl_strncmp (str, _("update"), sizeof("update")-1) == 0)
1489 {
1490 if (S_TRUE == file_is_remote())
1491 {
1492 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
1493 _("checksum testing"), str);
1494 SL_RETURN((-1), _("sh_util_setchecksum"));
1495 }
1496 else
1497 {
1498 sh.flag.checkSum = SH_CHECK_CHECK;
1499 sh.flag.update = S_TRUE;
1500 }
1501 }
1502 else if (sl_strncmp (str, _("check"), sizeof("check")-1) == 0)
1503 {
1504 sh.flag.checkSum = SH_CHECK_CHECK;
1505 }
1506 /*
1507 else if (sl_strncmp (str, _("update"), sizeof("update")-1) == 0)
1508 {
1509 sh.flag.checkSum = SH_CHECK_INIT;
1510 sh.flag.update = S_TRUE;
1511 }
1512 */
1513 else if (sl_strncmp (str, _("none"), sizeof("none")-1) == 0)
1514 {
1515 sh.flag.checkSum = SH_CHECK_NONE;
1516 }
1517 else
1518 {
1519 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
1520 _("checksum testing"), str);
1521 SL_RETURN((-1), _("sh_util_setchecksum"));
1522 }
1523 SL_RETURN((0), _("sh_util_setchecksum"));
1524}
1525#endif
1526
1527/*@+charint@*/
1528unsigned char TcpFlag[8][PW_LEN+1] = {
1529#if (POS_TF == 1)
1530 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1531#endif
1532 { 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
1533#if (POS_TF == 2)
1534 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1535#endif
1536 { 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
1537#if (POS_TF == 3)
1538 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1539#endif
1540 { 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
1541#if (POS_TF == 4)
1542 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1543#endif
1544 { 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
1545#if (POS_TF == 5)
1546 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1547#endif
1548 { 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
1549#if (POS_TF == 6)
1550 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1551#endif
1552 { 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
1553#if (POS_TF == 7)
1554 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1555#endif
1556 { 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
1557#if (POS_TF == 8)
1558 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1559#endif
1560};
1561/*@-charint@*/
1562
1563/* initialize a key to a random value
1564 * rev 0.8
1565 */
1566int sh_util_keyinit (char * buf, long size)
1567{
1568 UINT32 bufy[6];
1569 int i;
1570 int status = 0;
1571 char * p;
1572 char hashbuf[KEYBUF_SIZE];
1573
1574 SL_ENTER(_("sh_util_keyinit"));
1575
1576 ASSERT((size <= KEY_LEN+1), _("size <= KEY_LEN+1"))
1577
1578 if (size > KEY_LEN+1)
1579 size = KEY_LEN+1;
1580
1581 /* seed / re-seed the PRNG if required
1582 */
1583 status = taus_seed ();
1584
1585 if (status == -1)
1586 sh_error_handle ((-1), FIL__, __LINE__, -1, MSG_ES_KEY1,
1587 _("taus_seed"));
1588
1589 for (i = 0; i < 6; ++i)
1590 bufy[i] = taus_get();
1591
1592 p = sh_tiger_hash ((char *) bufy, TIGER_DATA,
1593 (unsigned long)(6*sizeof(UINT32)),
1594 hashbuf, sizeof(hashbuf));
1595
1596 i = sl_strlcpy(buf, p, (size_t)size);
1597
1598 memset (bufy, 0, 6*sizeof(UINT32));
1599
1600 if ((status == 0) && (!SL_ISERROR(i)) )
1601 SL_RETURN((0),_("sh_util_keyinit"));
1602
1603 if (SL_ISERROR(i))
1604 sh_error_handle ((-1), FIL__, __LINE__, i, MSG_ES_KEY2,
1605 _("sl_strlcpy"));
1606
1607 SL_RETURN((-1),_("sh_util_keyinit"));
1608}
1609
1610#if defined(SH_WITH_CLIENT) || defined(SH_STANDALONE)
1611
1612static unsigned char sh_obscure_index[256];
1613static int sh_obscure_no_check = S_FALSE;
1614
1615int sh_util_valid_utf8 (const unsigned char * str)
1616{
1617 const int sh_val_utf8_1 = 1;
1618 const int sh_val_utf8_2 = 2;
1619 const int sh_val_utf8_3 = 3;
1620 const int sh_val_utf8_4 = 4;
1621
1622 size_t len = strlen((const char *)str);
1623 size_t l = 0;
1624 int typ = 0;
1625 unsigned char c = '\0';
1626 unsigned char c2[2] = { 0x00, 0x00 };
1627 unsigned char c3[3] = { 0x00, 0x00, 0x00 };
1628
1629
1630#define SH_VAL_UTF8_1 ((c != '\0') && ((c & 0x80) == 0x00))
1631#define SH_VAL_UTF8_2 ((c != '\0') && ((c & 0xE0) == 0xC0)) /* 110x xxxx */
1632#define SH_VAL_UTF8_3 ((c != '\0') && ((c & 0xF0) == 0xE0)) /* 1110 xxxx */
1633#define SH_VAL_UTF8_4 ((c != '\0') && ((c & 0xF8) == 0xF0)) /* 1111 0xxx */
1634#define SH_VAL_UTF8_N ((c != '\0') && ((c & 0xC0) == 0x80)) /* 10xx xxxx */
1635#define SH_VAL_BAD ((c == '"') || (c == '\t') || (c == '\b') || \
1636 (c == '\f') || (c == '\n') || \
1637 (c == '\r') || (c == '\v') || iscntrl((int) c) || \
1638 (c != ' ' && !isgraph ((int) c)))
1639
1640 while(l < len)
1641 {
1642 c = str[l];
1643
1644 if (SH_VAL_UTF8_1)
1645 {
1646 if (!(SH_VAL_BAD && (sh_obscure_index[c] != 1)))
1647 {
1648 typ = sh_val_utf8_1;
1649 ++l; continue;
1650 }
1651 else
1652 {
1653 return S_FALSE;
1654 }
1655 }
1656 else if (SH_VAL_UTF8_2)
1657 {
1658 typ = sh_val_utf8_2;
1659 c2[0] = c;
1660 if ((c & 0x3e) != 0x00) /* !(overlong 2-byte seq.) */
1661 {
1662 ++l;
1663 if (l != len) {
1664 c = str[l];
1665 if(SH_VAL_UTF8_N) {
1666 c2[1] = c;
1667 ++l; continue;
1668 }
1669 else {
1670 return S_FALSE;
1671 }
1672 }
1673 else {
1674 return S_FALSE;
1675 }
1676 }
1677 else
1678 {
1679 return S_FALSE; /* overlong 2-byte seq. */
1680 }
1681 }
1682 else if (SH_VAL_UTF8_3)
1683 {
1684 typ = sh_val_utf8_3;
1685 c3[0] = c;
1686 ++l; if (l == len) return S_FALSE; c = str[l];
1687 if(!SH_VAL_UTF8_N) return S_FALSE;
1688 if (((str[l-1] & 0x1F) == 0x00) && ((c & 0x60) == 0x00))
1689 return S_FALSE; /* overlong 3-byte seq. */
1690 c3[1] = c;
1691 ++l; if (l == len) return S_FALSE; c = str[l];
1692 if(!SH_VAL_UTF8_N) return S_FALSE;
1693 c3[2] = c;
1694 ++l; continue;
1695 }
1696 else if (SH_VAL_UTF8_4)
1697 {
1698 typ = sh_val_utf8_4;
1699 ++l; if (l == len) return S_FALSE; c = str[l];
1700 if(!SH_VAL_UTF8_N) return S_FALSE;
1701 if (((str[l-1] & 0x0F) == 0x00) && ((c & 0x70) == 0x00))
1702 return S_FALSE; /* overlong 4-byte seq. */
1703 ++l; if (l == len) return S_FALSE; c = str[l];
1704 if(!SH_VAL_UTF8_N) return S_FALSE;
1705 ++l; if (l == len) return S_FALSE; c = str[l];
1706 if(!SH_VAL_UTF8_N) return S_FALSE;
1707 ++l; continue;
1708 }
1709 return S_FALSE;
1710 }
1711
1712 /* last character is invisible (space or else)
1713 */
1714 if (typ == sh_val_utf8_1)
1715 {
1716 if (c != ' ')
1717 return S_TRUE;
1718 else
1719 return S_FALSE;
1720 }
1721 else if (typ == sh_val_utf8_2)
1722 {
1723 if (c2[0] == 0xC2 && c2[1] == 0xA0) /* nbsp */
1724 return S_FALSE;
1725 else
1726 return S_TRUE;
1727 }
1728 else if (typ == sh_val_utf8_3)
1729 {
1730 if (c3[0] == 0xE2)
1731 {
1732 if (c3[1] == 0x80 && c3[2] >= 0x80 && c3[2] <= 0x8F)
1733 return S_FALSE; /* various spaces, left-to-right, right-to-left */
1734 else if (c3[1] == 0x80 && (c3[2] == 0xA8 || c3[2] == 0xA9 ||
1735 c3[2] == 0xAD || c3[2] == 0xAF))
1736 return S_FALSE; /* line sep, para sep, zw word joiner, nnbsp */
1737 else if (c3[1] == 0x81 && (c3[2] == 0xA0 || c3[2] == 0xA1 ||
1738 c3[2] == 0x9F))
1739 return S_FALSE; /* word joiner, function app, math space */
1740 else
1741 return S_TRUE;
1742 }
1743 else if (c3[0] == 0xE3 && c3[1] == 0x80 && c3[2] == 0x80)
1744 {
1745 return S_FALSE; /* ideographic space */
1746 }
1747 else if (c3[0] == 0xEF && c3[1] == 0xBB && c3[2] == 0xBF)
1748 {
1749 return S_FALSE; /* zwnbsp */
1750 }
1751 else
1752 {
1753 return S_TRUE;
1754 }
1755 }
1756 else
1757 {
1758 return S_TRUE;
1759 }
1760}
1761
1762
1763int sh_util_obscure_ok (const char * str)
1764{
1765 unsigned long i;
1766 char * endptr = NULL;
1767
1768 SL_ENTER(_("sh_util_obscure_ok"));
1769
1770 if (0 == sl_strncmp("all", str, 3))
1771 {
1772 for (i = 0; i < 255; ++i)
1773 {
1774 sh_obscure_index[i] = (unsigned char)1;
1775 }
1776 sh_obscure_no_check = S_TRUE;
1777 SL_RETURN(0, _("sh_util_obscure_ok"));
1778 }
1779
1780 sh_obscure_no_check = S_FALSE;
1781
1782 for (i = 0; i < 255; ++i)
1783 {
1784 sh_obscure_index[i] = (unsigned char)0;
1785 }
1786
1787 i = strtoul (str, &endptr, 0);
1788 if (i > 255)
1789 {
1790 SL_RETURN(-1, _("sh_util_obscure_ok"));
1791 }
1792 sh_obscure_index[i] = (unsigned char)1;
1793 if (*endptr == ',')
1794 ++endptr;
1795
1796 while (*endptr != '\0')
1797 {
1798 i = strtoul (endptr, &endptr, 0);
1799 if (i > 255)
1800 {
1801 SL_RETURN(-1, _("sh_util_obscure_ok"));
1802 }
1803 sh_obscure_index[i] = (unsigned char)1;
1804 if (*endptr == ',')
1805 ++endptr;
1806 }
1807 SL_RETURN(0, _("sh_util_obscure_ok"));
1808}
1809
1810static int sh_obscure_check_utf8 = S_FALSE;
1811
1812int sh_util_obscure_utf8 (const char * c)
1813{
1814 int i;
1815 SL_ENTER(_("sh_util_obscure_utf8"));
1816 i = sh_util_flagval(c, &(sh_obscure_check_utf8));
1817 if (sh_obscure_check_utf8 == S_TRUE)
1818 sh_obscure_no_check = S_FALSE;
1819 SL_RETURN(i, _("sh_util_obscure_utf8"));
1820}
1821
1822
1823int sh_util_obscurename (ShErrLevel level, const char * name_orig, int flag)
1824{
1825 const unsigned char * name = (const unsigned char *) name_orig;
1826 char * safe;
1827 unsigned int i;
1828 size_t len = 0;
1829
1830 SL_ENTER(_("sh_util_obscurename"));
1831
1832 ASSERT_RET((name != NULL), _("name != NULL"), (0))
1833
1834 if (sh_obscure_no_check == S_FALSE)
1835 {
1836 if (sh_obscure_check_utf8 != S_TRUE)
1837 {
1838 /* -- Check name. --
1839 */
1840 while (*name != '\0')
1841 {
1842 if ( (*name) > 0x7F || (*name) == '"' || (*name) == '\t' ||
1843 (*name) == '\b' || (*name) == '\f' ||
1844 (*name) == '\n' || (*name) == '\r' ||
1845 (*name) == '\v' || iscntrl((int) *name) ||
1846 ((*name) != ' ' && !isgraph ((int) *name)) )
1847 {
1848 i = (unsigned char) *name;
1849 if (sh_obscure_index[i] != (unsigned char)1)
1850 {
1851 goto err;
1852 }
1853 }
1854 name++; ++len;
1855 }
1856
1857 /* Check for blank at end of name
1858 */
1859 if ((len > 0) && (name_orig[len-1] == ' '))
1860 {
1861 goto err;
1862 }
1863 }
1864 else
1865 {
1866 if (S_FALSE == sh_util_valid_utf8(name))
1867 {
1868 goto err;
1869 }
1870 SL_RETURN((0),_("sh_util_obscurename"));
1871 }
1872 }
1873
1874 SL_RETURN((0),_("sh_util_obscurename"));
1875
1876 err:
1877
1878 if (flag == S_TRUE)
1879 {
1880 safe = sh_util_safe_name (name_orig);
1881 sh_error_handle (level, FIL__, __LINE__, 0, MSG_FI_OBSC,
1882 safe);
1883 SH_FREE(safe);
1884 }
1885 SL_RETURN((-1),_("sh_util_obscurename"));
1886}
1887
1888#endif
1889
1890/* returns freshly allocated memory, return value should be free'd
1891 */
1892char * sh_util_dirname(const char * fullpath)
1893{
1894 char * retval;
1895 size_t len;
1896 char * tmp;
1897
1898 SL_ENTER(_("sh_util_dirname"));
1899
1900 ASSERT_RET ((fullpath != NULL), _("fullpath != NULL"), (NULL))
1901 ASSERT_RET ((*fullpath == '/'), _("*fullpath == '/'"), (NULL))
1902
1903 retval = sh_util_strdup(fullpath);
1904
1905 tmp = retval;
1906 while (*tmp == '/') ++tmp;
1907
1908 /* (1) only leading slashes -- return exact copy
1909 */
1910 if (*tmp == '\0')
1911 {
1912 SL_RETURN(retval, _("sh_util_dirname"));
1913 }
1914
1915 /* (2) there are non-slash characters, so delete trailing slashes
1916 */
1917 len = sl_strlen (retval); /* retval[len] is terminating '\0' */
1918
1919 while (len > 1 && retval[len-1] == '/') /* delete trailing slash */
1920 {
1921 retval[len-1] = '\0';
1922 --len;
1923 }
1924
1925 /* (3) now delete all non-slash characters up to the preceding slash
1926 */
1927 while (len > 1 && retval[len-1] != '/') {
1928 retval[len-1] = '\0';
1929 --len;
1930 }
1931
1932 /* (4a) only leading slashes left, so return this
1933 */
1934 if (&(retval[len]) == tmp)
1935 {
1936 SL_RETURN(retval, _("sh_util_dirname"));
1937 }
1938
1939 /* (4b) strip trailing slash(es) of parent directory
1940 */
1941 while (len > 1 && retval[len-1] == '/') {
1942 retval[len-1] = '\0';
1943 --len;
1944 }
1945 SL_RETURN(retval, _("sh_util_dirname"));
1946
1947}
1948
1949/* returns freshly allocated memory, return value should be free'd
1950 */
1951char * sh_util_basename(const char * fullpath)
1952{
1953 char * retval = NULL;
1954 const char * tmp;
1955 char * tmp2;
1956 char * c;
1957 size_t len;
1958
1959 SL_ENTER(_("sh_util_basename"));
1960
1961 ASSERT_RET ((fullpath != NULL), _("fullpath != NULL"), (NULL))
1962
1963 tmp = fullpath; while (*tmp == '/') ++tmp;
1964 if (*tmp == '\0')
1965 {
1966 retval = sh_util_strdup(fullpath);
1967 }
1968 else
1969 {
1970 tmp2 = sh_util_strdup(tmp);
1971 len = sl_strlen (tmp2);
1972
1973 while (len > 1 && tmp2[len-1] == '/')
1974 {
1975 tmp2[len-1] = '\0';
1976 --len;
1977 }
1978
1979 if (tmp2) /* for llvm/clang analyzer */
1980 {
1981 c = strrchr(tmp2, '/');
1982 if (c)
1983 {
1984 retval = sh_util_strdup(++c);
1985 SH_FREE(tmp2);
1986 }
1987 else
1988 {
1989 retval = tmp2;
1990 }
1991 }
1992 }
1993
1994 SL_RETURN(retval, _("sh_util_basename"));
1995}
1996
1997#define SH_ESCAPE_SPACE 1
1998#define SH_DONT_ESCAPE_SPACE 0
1999char * sh_util_safe_name_int (const char * name, int escape_space);
2000
2001char * sh_util_safe_name (const char * name)
2002{
2003 return sh_util_safe_name_int (name, SH_ESCAPE_SPACE);
2004}
2005
2006char * sh_util_safe_name_keepspace (const char * name)
2007{
2008 return sh_util_safe_name_int (name, SH_DONT_ESCAPE_SPACE);
2009}
2010
2011/* returns freshly allocated memory, return value should be free'd
2012 */
2013char * sh_util_safe_name_int (const char * name, int escape_space)
2014{
2015 register int i = 0;
2016 const char * p;
2017 char * retval;
2018 char oct[32];
2019 char format[16];
2020 size_t len;
2021
2022 SL_ENTER(_("sh_util_safe_name"));
2023
2024 if (name == NULL)
2025 {
2026 /* return an allocated array
2027 */
2028 retval = SH_ALLOC(7);
2029 (void) sl_strlcpy(retval, _("(null)"), 7);
2030 SL_RETURN(retval, _("sh_util_safe_name"));
2031 }
2032
2033 /*
2034 ASSERT_RET ((name != NULL), _("name != NULL"), _("NULL"))
2035 */
2036
2037 len = sl_strlen(name);
2038 p = name;
2039
2040#ifdef SH_USE_XML
2041 if (sl_ok_muls (6, len) && sl_ok_adds ((6*len), 2))
2042 { retval = SH_ALLOC(6 * len + 2); }
2043 else
2044 {
2045 /* return an allocated array
2046 */
2047 retval = SH_ALLOC(11);
2048 (void) sl_strlcpy(retval, _("(overflow)"), 11);
2049 SL_RETURN(retval, _("sh_util_safe_name"));
2050 }
2051#else
2052 if (sl_ok_muls (4, len) && sl_ok_adds ((4*len), 2))
2053 { retval = SH_ALLOC(4 * len + 2); }
2054 else
2055 {
2056 /* return an allocated array
2057 */
2058 retval = SH_ALLOC(11);
2059 (void) sl_strlcpy(retval, _("(overflow)"), 11);
2060 SL_RETURN(retval, _("sh_util_safe_name"));
2061 }
2062#endif
2063
2064 (void) sl_strncpy(format, _("%c%03o"), 16);
2065
2066 while (*p != '\0') {
2067 /* Most frequent cases first
2068 */
2069 if ( ((*p) >= 'a' && (*p) <= 'z') || ((*p) == '/') || ((*p) == '.') ||
2070 ((*p) >= '0' && (*p) <= '9') ||
2071 ((*p) >= 'A' && (*p) <= 'Z')) {
2072 retval[i] = *p;
2073 } else if ( (*p) == '\\') { /* backslash */
2074 retval[i] = '\\'; ++i;
2075 retval[i] = '\\';
2076 } else if ( (*p) == '\n') { /* newline */
2077 retval[i] = '\\'; ++i;
2078 retval[i] = 'n';
2079 } else if ( (*p) == '\b') { /* backspace */
2080 retval[i] = '\\'; ++i;
2081 retval[i] = 'b';
2082 } else if ( (*p) == '\r') { /* carriage return */
2083 retval[i] = '\\'; ++i;
2084 retval[i] = 'r';
2085 } else if ( (*p) == '\t') { /* horizontal tab */
2086 retval[i] = '\\'; ++i;
2087 retval[i] = 't';
2088 } else if ( (*p) == '\v') { /* vertical tab */
2089 retval[i] = '\\'; ++i;
2090 retval[i] = 'v';
2091 } else if ( (*p) == '\f') { /* form-feed */
2092 retval[i] = '\\'; ++i;
2093 retval[i] = 'f';
2094#ifdef WITH_DATABASE
2095 } else if ( (*p) == '\'') { /* single quote */
2096 retval[i] = '\\'; ++i;
2097 retval[i] = '\'';
2098#endif
2099 } else if ( (*p) == ' ') { /* space */
2100 if (escape_space) {
2101 retval[i] = '\\'; ++i;
2102 retval[i] = ' ';
2103 }
2104 else {
2105 retval[i] = *p;
2106 }
2107#ifdef SH_USE_XML
2108 } else if ( (*p) == '"') { /* double quote */
2109 retval[i] = '&'; ++i;
2110 retval[i] = 'q'; ++i;
2111 retval[i] = 'u'; ++i;
2112 retval[i] = 'o'; ++i;
2113 retval[i] = 't'; ++i;
2114 retval[i] = ';';
2115 } else if ( (*p) == '&') { /* ampersand */
2116 retval[i] = '&'; ++i;
2117 retval[i] = 'a'; ++i;
2118 retval[i] = 'm'; ++i;
2119 retval[i] = 'p'; ++i;
2120 retval[i] = ';';
2121 } else if ( (*p) == '<') { /* left angle */
2122 retval[i] = '&'; ++i;
2123 retval[i] = 'l'; ++i;
2124 retval[i] = 't'; ++i;
2125 retval[i] = ';';
2126 } else if ( (*p) == '>') { /* right angle */
2127 retval[i] = '&'; ++i;
2128 retval[i] = 'g'; ++i;
2129 retval[i] = 't'; ++i;
2130 retval[i] = ';';
2131#else
2132 } else if ( (*p) == '"') { /* double quote */
2133 retval[i] = '\\'; ++i;
2134 retval[i] = '\"';
2135#endif
2136 } else if (!isgraph ((int) *p)) { /* not printable */
2137 /*@-bufferoverflowhigh -formatconst@*/
2138 /* flawfinder: ignore */
2139 sprintf(oct, format, '\\', /* known to fit */
2140 (unsigned char) *p);
2141 /*@+bufferoverflowhigh +formatconst@*/
2142 retval[i] = oct[0]; ++i;
2143 retval[i] = oct[1]; ++i;
2144 retval[i] = oct[2]; ++i;
2145 retval[i] = oct[3];
2146 } else {
2147 retval[i] = *p;
2148 }
2149 ++p;
2150 ++i;
2151 }
2152 retval[i] = '\0';
2153 SL_RETURN(retval, _("sh_util_safe_name"));
2154}
2155
2156int sh_util_isnum (const char *str)
2157{
2158 const char *p = str;
2159
2160 SL_ENTER(_("sh_util_isnum"));
2161
2162 ASSERT_RET ((str != NULL), _("str != NULL"), (-1))
2163
2164 while (p) {
2165 if (!isdigit((int) *p) )
2166 SL_RETURN((-1), _("sh_util_isnum"));
2167 ++p;
2168 }
2169 SL_RETURN((0), _("sh_util_isnum"));
2170}
2171
2172char * sh_util_strconcat (const char * arg1, ...)
2173{
2174 size_t length, l2;
2175 char * s;
2176 char * strnew;
2177 va_list vl;
2178
2179 SL_ENTER(_("sh_util_strconcat"));
2180
2181 ASSERT_RET ((arg1 != NULL), _("arg1 != NULL"), (NULL))
2182
2183 length = sl_strlen (arg1) + 1;
2184
2185 va_start (vl, arg1);
2186 s = va_arg (vl, char * );
2187 while (s != NULL)
2188 {
2189 l2 = sl_strlen (s);
2190 if (sl_ok_adds(length, l2))
2191 length += l2;
2192 else
2193 SL_RETURN(NULL, _("sh_util_strconcat"));
2194 s = va_arg (vl, char * );
2195 }
2196 va_end (vl);
2197
2198 if (sl_ok_adds(length, 2))
2199 strnew = SH_ALLOC( length + 2 );
2200 else
2201 SL_RETURN(NULL, _("sh_util_strconcat"));
2202
2203 strnew[0] = '\0';
2204
2205 (void) sl_strlcpy (strnew, arg1, length + 2);
2206
2207 va_start (vl, arg1);
2208 s = va_arg (vl, char * );
2209 while (s)
2210 {
2211 (void) sl_strlcat (strnew, s, length + 2);
2212 s = va_arg (vl, char * );
2213 }
2214 va_end (vl);
2215
2216 SL_RETURN(strnew, _("sh_util_strconcat"));
2217}
2218
2219static const char bto64_0[] = N_("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789()");
2220static char bto64[65] = { '\0' };
2221
2222
2223size_t sh_util_base64_enc (unsigned char * out,
2224 const unsigned char * instr,
2225 size_t lin)
2226{
2227 int ll;
2228 unsigned char a, b, c;
2229 size_t len = 0;
2230 size_t j = 0;
2231
2232 start:
2233 if (bto64[0] != '\0')
2234 {
2235 if (instr /* && *instr *//* need to handle binary data */)
2236 {
2237 if (lin == 0)
2238 lin = strlen((const char *)instr);
2239
2240 if (lin > 0)
2241 {
2242 do {
2243 ll = 0;
2244
2245 if (len < lin)
2246 { a = *instr; ++instr; ++len; ++ll; }
2247 else
2248 { a = 0; }
2249 if (len < lin)
2250 { b = *instr; ++instr; ++len; ++ll; }
2251 else
2252 { b = 0; }
2253 if (len < lin)
2254 { c = *instr; ++instr; ++len; ++ll; }
2255 else
2256 { c = 0; }
2257
2258 *out = bto64[ a >> 2 ];
2259 ++j; ++out;
2260 *out = bto64[ ((a & 0x03) << 4) | ((b & 0xf0) >> 4) ];
2261 ++j; ++out;
2262 *out = (unsigned char) (ll > 1 ? bto64[ ((b & 0x0f) << 2) | ((c & 0xc0) >> 6) ] : '?');
2263 ++j; ++out;
2264 *out = (unsigned char) (ll > 2 ? bto64[ c & 0x3f ] : '?');
2265 ++j; ++out;
2266 } while (len < lin);
2267 }
2268 }
2269 *out = '\0';
2270 return j;
2271 }
2272
2273 memcpy(bto64, _(bto64_0), 65);
2274 goto start;
2275}
2276
2277size_t sh_util_base64_enc_alloc (char **out, const char *in, size_t inlen)
2278{
2279 size_t outlen = SH_B64_SIZ(inlen);
2280
2281 if (inlen > outlen) /* overflow */
2282 {
2283 *out = NULL;
2284 return 0;
2285 }
2286
2287 *out = SH_ALLOC(outlen);
2288 return sh_util_base64_enc((unsigned char *)*out, (const unsigned char *)in, inlen);
2289}
2290
2291size_t sh_util_base64_dec (unsigned char *out,
2292 const unsigned char *in,
2293 size_t lin)
2294{
2295 size_t i;
2296 unsigned char c;
2297 unsigned char b;
2298 size_t lout = 0;
2299 unsigned int w = 0;
2300
2301 if (out && in)
2302 {
2303 if (lin == 0)
2304 lin = strlen((const char *)in);
2305
2306 for (i = 0; i < lin; i++)
2307 {
2308 c = *in; ++in;
2309 b = 0;
2310
2311 if ((c >= 'A') && (c <= 'Z'))
2312 {
2313 b = (c - 'A');
2314 }
2315 else if ((c >= 'a') && (c <= 'z'))
2316 {
2317 b = (c - 'a' + 26);
2318 }
2319 else if ((c >= '0') && (c <= '9'))
2320 {
2321 b = (c - '0' + 52);
2322 }
2323 else if (c == '(' || c == '+')
2324 {
2325 b = 62;
2326 }
2327 else if (c == ')' || c == '/')
2328 {
2329 b = 63;
2330 }
2331 else if (c == '?' || c == '=')
2332 {
2333 /* last byte was written to, but will now get
2334 * truncated
2335 */
2336 if (lout > 0) --lout;
2337 break;
2338 }
2339
2340 if (w == 0)
2341 {
2342 *out = (b << 2) & 0xfc;
2343 ++lout;
2344 }
2345 else if (w == 1)
2346 {
2347 *out |= (b >> 4) & 0x03;
2348 ++out;
2349 *out = (b << 4) & 0xf0;
2350 ++lout;
2351 }
2352 else if (w == 2)
2353 {
2354 *out |= (b >> 2) & 0x0f;
2355 ++out;
2356 *out = (b << 6) & 0xc0;
2357 ++lout;
2358 }
2359 else if (w == 3)
2360 {
2361 *out |= b & 0x3f;
2362 ++out;
2363 }
2364
2365 ++w;
2366
2367 if (w == 4)
2368 {
2369 w = 0;
2370 }
2371 }
2372 *out = '\0';
2373 }
2374 return lout;
2375}
2376
2377size_t sh_util_base64_dec_alloc (unsigned char **out, const unsigned char *in,
2378 size_t lin)
2379{
2380 size_t lout = 3 * (lin / 4) + 2;
2381
2382 *out = SH_ALLOC(lout);
2383
2384 return sh_util_base64_dec (*out, in, lin);
2385}
2386
2387
2388#ifdef HAVE_REGEX_H
2389
2390#include <regex.h>
2391
2392int sh_util_regcmp (char * regex_str, char * in_str)
2393{
2394#if defined(REG_ESPACE)
2395 int status = REG_ESPACE;
2396#else
2397 int status = -1;
2398#endif
2399 regex_t preg;
2400 char * errbuf;
2401
2402 SL_ENTER(_("sh_util_regcmp"));
2403
2404 status = regcomp(&preg, regex_str, REG_NOSUB|REG_EXTENDED);
2405
2406 if (status == 0)
2407 {
2408 if ((status = regexec(&preg, in_str, 0, NULL, 0)) == 0)
2409 {
2410 regfree (&preg);
2411 SL_RETURN((0), _("sh_util_regcmp"));
2412 }
2413 }
2414
2415 if (status != 0 && status != REG_NOMATCH)
2416 {
2417 errbuf = SH_ALLOC(BUFSIZ);
2418 (void) regerror(status, &preg, errbuf, BUFSIZ);
2419 errbuf[BUFSIZ-1] = '\0';
2420 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_E_REGEX,
2421 errbuf, regex_str);
2422 SH_FREE(errbuf);
2423 }
2424
2425 regfree (&preg);
2426 SL_RETURN((-1), _("sh_util_regcmp"));
2427}
2428
2429#endif
2430
2431
2432
2433
2434
2435
2436
2437
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