source: trunk/src/sh_utils.c@ 565

Last change on this file since 565 was 560, checked in by katerina, 4 years ago

Fix for ticket #449 (gcc 10 compile issues).
File size: 54.5 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 /* cppcheck-suppress uninitvar */
830 h2 = sh_tiger_hash_uint32 ( inner, TIGER_DATA,
831 (unsigned long) KEY_BLOCK+textlen,
832 kbuf, KEY_BYT/sizeof(UINT32));
833 for (i = KEY_LEN/8; i < (KEY_LEN/4); ++i)
834 copy_four ( (unsigned char *) &(cc[i]), h2[i - (KEY_LEN/8)]);
835
836 /* cppcheck-suppress uninitvar */
837 SH_FREE(inner);
838
839 (void) sh_tiger_hash ((char *) &cc[0],
840 TIGER_DATA,
841 (unsigned long) (KEY_LEN/4 * sizeof(UINT32)),
842 hashbuf, sizeof(hashbuf));
843
844 sl_strlcpy(res, hashbuf, len);
845 SL_RETURN(res, _("sh_util_hmac_tiger"));
846}
847
848static char * sh_util_hash_tiger ( char * hexkey,
849 char * text, size_t textlen,
850 char * res, size_t len)
851{
852 char h2[2*KEY_LEN+1];
853 char hashbuf[KEYBUF_SIZE];
854
855 SL_ENTER(_("sh_util_hash_tiger"));
856
857 (void) sl_strlcpy(h2, hexkey, KEY_LEN+1);
858 (void) sl_strlcat(h2,
859 sh_tiger_hash(text, TIGER_DATA,
860 (unsigned long) textlen,
861 hashbuf, sizeof(hashbuf)),
862 2*KEY_LEN+1
863 );
864
865 (void) sh_tiger_hash(h2, TIGER_DATA, 2*KEY_LEN, hashbuf, sizeof(hashbuf));
866
867 sl_strlcpy(res, hashbuf, len);
868 SL_RETURN(res, _("sh_util_hash_tiger"));
869}
870
871/* --- compute signature on data ---
872 */
873#define TYPE_HMAC 0
874#define TYPE_HASH 1
875
876static int sigtype = TYPE_HMAC;
877
878int sh_util_sigtype (const char * c)
879{
880 SL_ENTER(_("sh_util_sigtype"));
881 if (c == NULL)
882 SL_RETURN( -1, _("sh_util_sigtype"));
883
884 if (0 == strcmp(_("HMAC-TIGER"), c))
885 sigtype = TYPE_HMAC;
886 else if (0 == strcmp(_("HASH-TIGER"), c))
887 sigtype = TYPE_HASH;
888 else
889 SL_RETURN( -1, _("sh_util_sigtype"));
890
891 SL_RETURN( 0, _("sh_util_sigtype"));
892}
893
894char * sh_util_siggen (char * hexkey,
895 char * text, size_t textlen,
896 char * res, size_t len)
897{
898 char * p;
899
900 SL_ENTER(_("sh_util_siggen"));
901 if (sigtype == TYPE_HMAC)
902 p = sh_util_hmac_tiger (hexkey,
903 text, textlen, res, len);
904 else
905 p = sh_util_hash_tiger (hexkey,
906 text, textlen, res, len);
907 SL_RETURN(p, _("sh_util_siggen"));
908}
909
910
911/* a simple compressor
912 */
913size_t sh_util_compress (char * dest, char * src, size_t dest_size)
914{
915 char * add;
916 char * get;
917 size_t count = 0;
918 size_t dest_end;
919
920 SL_ENTER(_("sh_util_compress"));
921
922 if (dest_size == 0)
923 SL_RETURN((0), _("sh_util_compress"));
924
925 if ((dest == NULL) || (src == NULL))
926 SL_RETURN((0), _("sh_util_compress"));
927
928 dest_end = sl_strlen(dest);
929
930 if (dest_end > dest_size)
931 SL_RETURN((0), _("sh_util_compress"));
932
933 add = &dest[dest_end];
934 get = src;
935
936 while (count < (dest_size-dest_end))
937 {
938 if (isalnum((int) *get))
939 {
940 *add = *get;
941 ++add;
942 ++count;
943 }
944 ++get;
945 if (*get == '\0' && (count < (dest_size-dest_end)))
946 /* end of src reached */
947 {
948 *add = *get; /* copy the '\0' */
949 break; /* and stop copying */
950 }
951 }
952
953 dest[dest_size-1] = '\0'; /* paranoia */
954 SL_RETURN((count), _("sh_util_compress")); /* no of chars copied */
955}
956
957
958/* copy the four least significant bytes
959 */
960void sh_util_cpylong (char * dest, const char * src, int len )
961{
962 int i, j;
963 union
964 {
965 long l;
966 char c[sizeof(long)];
967 } u;
968#ifdef WORDS_BIGENDIAN
969 unsigned char swap;
970 unsigned char * ii = (unsigned char *) dest;
971#endif
972
973 SL_ENTER(_("sh_util_cpylong"));
974
975 u.l = 1;
976
977 /* MSB is first
978 */
979 if (sizeof(long)>4 &&/*@+charint@*/(u.c[sizeof(long)-1] == 1)/*@-charint@*/)
980 {
981 j = (int) (sizeof(long)-4);
982 for (i = 0; i < j; ++i) ++src;
983 }
984
985 i = 0;
986
987 while (i < 4)
988 {
989 *dest = (*src);
990 ++dest; ++src;
991 if (i == (len-1)) break;
992 ++i;
993 }
994#ifdef WORDS_BIGENDIAN
995 swap = ii[0]; ii[0] = ii[3]; ii[3] = swap;
996 swap = ii[1]; ii[1] = ii[2]; ii[2] = swap;
997#endif
998 SL_RET0(_("sh_util_cpylong"));
999}
1000
1001/* This is a maximally equidistributed combined Tausworthe
1002 * generator. The sequence is,
1003 *
1004 * x_n = (s1_n ^ s2_n ^ s3_n)
1005 *
1006 * s1_{n+1} = (((s1_n & 4294967294) <<12) ^ (((s1_n <<13) ^ s1_n) >>19))
1007 * s2_{n+1} = (((s2_n & 4294967288) << 4) ^ (((s2_n << 2) ^ s2_n) >>25))
1008 * s3_{n+1} = (((s3_n & 4294967280) <<17) ^ (((s3_n << 3) ^ s3_n) >>11))
1009 *
1010 * computed modulo 2^32. In the three formulas above '^' means
1011 * exclusive-or (C-notation), not exponentiation. Note that the
1012 * algorithm relies on the properties of 32-bit unsigned integers (it
1013 * is formally defined on bit-vectors of length 32).
1014 *
1015 * Stolen from GSL (GNU scientific library) and modified somewhat.
1016 * I am using UINT32, which is guaranteed to be 32 bits. Also made
1017 * sure that the initialization vector is valid.
1018 */
1019
1020
1021/* interval [0, 4294967295]
1022 */
1023static UINT32 taus_get_long (void *vstate)
1024{
1025 UINT32 * state = (UINT32 *) vstate;
1026
1027 /*
1028 if (skey->rngI == BAD)
1029 (void)taus_seed();
1030 */
1031
1032#define TAUSWORTHE(s,a,b,c,d) ((s &c) <<d) ^ (((s <<a) ^s) >>b)
1033 /*@+ignorequals@*/
1034 state[0] = TAUSWORTHE (state[0], 13, 19, 4294967294UL, 12);
1035 state[1] = TAUSWORTHE (state[1], 2, 25, 4294967288UL, 4);
1036 state[2] = TAUSWORTHE (state[2], 3, 11, 4294967280UL, 17);
1037 /*@-ignorequals@*/
1038 return (state[0] ^ state[1] ^ state[2]);
1039}
1040
1041/* Hide the internal state of the PRNG by using its output as
1042 * input for a one-way hash function.
1043 */
1044
1045UINT32 taus_get ()
1046{
1047#define TAUS_SAMPLE 12
1048
1049 UINT32 taus_svec[TAUS_SAMPLE];
1050 UINT32 retval;
1051 UINT32 * res;
1052 UINT32 * res_vec = &(skey->res_vec[0]);
1053 static int res_num = 0;
1054 register int i;
1055 UINT32 kbuf[KEY_BYT/sizeof(UINT32)];
1056
1057 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1058 if (res_num > 0)
1059 {
1060 retval = res_vec[res_num];
1061 res_num = (res_num == 5) ? 0 : (res_num + 1);
1062 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey); /* alternative path */
1063 return retval;
1064 }
1065 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1066
1067 (void)taus_seed();
1068
1069 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1070 for (i = 0; i < (TAUS_SAMPLE/3); ++i)
1071 {
1072 taus_svec[i*3] = taus_get_long (&(skey->rng0[0]));
1073 taus_svec[i*3+1] = taus_get_long (&(skey->rng1[0]));
1074 taus_svec[i*3+2] = taus_get_long (&(skey->rng2[0]));
1075 }
1076 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1077
1078 res = sh_tiger_hash_uint32 ( (char *) &taus_svec[0],
1079 TIGER_DATA,
1080 (unsigned long)(TAUS_SAMPLE * sizeof(UINT32)),
1081 kbuf, KEY_BYT/sizeof(UINT32));
1082
1083 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1084 for (i = 1; i < 6; ++i)
1085 {
1086 res_vec[i] = res[i];
1087 }
1088 retval = res[0];
1089 res_num = 1;
1090 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1091
1092 memset(taus_svec, 0, TAUS_SAMPLE * sizeof(UINT32));
1093
1094 return retval;
1095}
1096
1097/* interval [0,1)
1098 */
1099double taus_get_double (void *vstate)
1100{
1101 return taus_get_long (vstate) / (4294967296.0 + 1.0) ;
1102}
1103
1104#define LCG(n) ((69069 * n) & 0xffffffffUL)
1105
1106/* TAKE CARE: state[0], state[1], state[2] must be > 2,8,16, respectively
1107 */
1108static void taus_set_from_ulong (void *vstate, unsigned long int s)
1109{
1110 UINT32 *state = (UINT32 *) vstate;
1111
1112 if (s == 0)
1113 s = 1; /* default seed is 1 */
1114
1115 state[0] = (UINT32)(LCG (s) | (UINT32) 0x03);
1116 state[1] = (UINT32)(LCG (state[0]) | (UINT32) 0x09);
1117 state[2] = (UINT32)(LCG (state[1]) | (UINT32) 0x17);
1118
1119 /* 'warm up'
1120 */
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 (void) taus_get_long (state);
1126 (void) taus_get_long (state);
1127
1128 return;
1129}
1130
1131static void taus_set_from_state (void *vstate, void *init_state)
1132{
1133 UINT32 *state = (UINT32 *) vstate;
1134 UINT32 *state0 = (UINT32 *) init_state;
1135
1136 state[0] = state0[0] | (UINT32) 0x03;
1137 state[1] = state0[1] | (UINT32) 0x09;
1138 state[2] = state0[2] | (UINT32) 0x17;
1139
1140 return;
1141}
1142
1143
1144int taus_seed ()
1145{
1146 char bufx[9 * sizeof(UINT32) + 1];
1147 int status;
1148 static unsigned long seed_time = 0;
1149 static unsigned long seed_counter = 3000;
1150 unsigned long gtime;
1151
1152 SL_ENTER(_("taus_seed"));
1153
1154 if (skey->rngI == GOOD)
1155 {
1156 ++seed_counter;
1157
1158 if ( ((sh_unix_longtime () - seed_time) < 1800) &&
1159 ( seed_counter < 3000))
1160 SL_RETURN( (0), _("taus_seed"));
1161 }
1162
1163 seed_time = sh_unix_longtime ();
1164 seed_counter = 0;
1165
1166 status = sh_entropy (24, bufx);
1167
1168 if (!SL_ISERROR(status))
1169 {
1170 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1171 memcpy (&skey->rng0[0], &bufx[0], 2*sizeof(UINT32));
1172 memcpy (&skey->rng1[0], &bufx[2*sizeof(UINT32)], 2*sizeof(UINT32));
1173 memcpy (&skey->rng2[0], &bufx[4*sizeof(UINT32)], 2*sizeof(UINT32));
1174 memset (bufx, 0, 9 * sizeof(UINT32) + 1);
1175
1176 skey->rng0[2] = 0;
1177 skey->rng1[2] = 0;
1178 skey->rng2[2] = 0;
1179
1180 taus_set_from_state( &(skey->rng0[0]), &(skey->rng0[0]));
1181 taus_set_from_state( &(skey->rng1[0]), &(skey->rng1[0]));
1182 taus_set_from_state( &(skey->rng2[0]), &(skey->rng2[0]));
1183
1184 skey->rngI = GOOD;
1185 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1186 SL_RETURN( (0), _("taus_seed"));
1187 }
1188
1189 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_ES_ENT,
1190 _("sh_entropy"));
1191
1192 /* emergency backup - unsafe !
1193 */
1194#ifdef HAVE_GETTIMEOFDAY
1195 gtime = sh_unix_notime();
1196#else
1197 gtime = seed_time;
1198#endif
1199
1200 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1201 taus_set_from_ulong ( &(skey->rng0[0]), LCG (gtime) );
1202 taus_set_from_ulong ( &(skey->rng1[0]), LCG (skey->rng0[0]) );
1203 taus_set_from_ulong ( &(skey->rng2[0]), LCG (skey->rng1[0]) );
1204 skey->rngI = BAD;
1205 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1206
1207 SL_RETURN( (-1), _("taus_seed"));
1208}
1209
1210/*@+charint@*/
1211static unsigned char new_key[] = { 0xA7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xA7 };
1212/*@-charint@*/
1213static void copy_four (unsigned char * dest, UINT32 in);
1214
1215int sh_util_set_newkey (const char * new_in)
1216{
1217 size_t i, j = 0;
1218 size_t len;
1219 SL_TICKET fp;
1220 SL_TICKET fout;
1221 char * key;
1222 char * path = NULL;
1223 char * outpath = NULL;
1224 unsigned char * image = NULL;
1225 long s = 0;
1226 long ilen = 0;
1227 long ii, k = 0;
1228 UINT32 * h1;
1229 char * new = NULL;
1230
1231 if (0 != sl_is_suid())
1232 {
1233 fprintf(stderr, "%s", _("ERROR: insufficient privilege\n"));
1234 _exit (EXIT_FAILURE);
1235 /*@notreached@*/
1236 return -1; /* braindead MAC OSX compiler needs this */
1237 }
1238
1239 if (new_in == NULL || new_in[0] == '\0')
1240 {
1241 fprintf(stderr, "%s",
1242 _("ERROR: no key given\n Argument must be 'key@path'\n"));
1243 _exit (EXIT_FAILURE);
1244 /*@notreached@*/
1245 return -1;
1246 }
1247
1248 if (NULL == (new = calloc(1,strlen(new_in) + 1)))
1249 goto bail_mem;
1250 sl_strncpy(new, new_in, strlen(new_in) + 1);
1251
1252 key = new;
1253 len = strlen(new);
1254 for (i = 1; i < (len-2); ++i)
1255 {
1256 if (new[i] == '@' && new[i+1] == '/')
1257 {
1258 j = i+1; new[i] = '\0'; break;
1259 }
1260 }
1261 if (j == 0)
1262 {
1263 fprintf(stderr, "%s",
1264 _("ERROR: no path to executable given\n Argument must be 'key@path'\n"));
1265 free(new);
1266 _exit (EXIT_FAILURE);
1267 /*@notreached@*/
1268 return -1;
1269 }
1270 else
1271 path = &new[j];
1272
1273 len = strlen(path) + 1 + 4;
1274 /*@-usedef@*/
1275 if (NULL == (outpath = calloc(1,len)))
1276 goto bail_mem;
1277 /*@-usedef@*/
1278 sl_snprintf (outpath, len, _("%s.out"), path);
1279
1280 fp = sl_open_read(FIL__, __LINE__, path, SL_NOPRIV);
1281 if (SL_ISERROR(fp))
1282 {
1283 fprintf(stderr,
1284 _("ERROR: cannot open %s for read (errnum = %ld)\n"), path, fp);
1285 free(new); free (outpath);
1286 _exit (EXIT_FAILURE);
1287 /*@notreached@*/
1288 return -1;
1289 }
1290
1291 fout = sl_open_write(FIL__, __LINE__, outpath, SL_NOPRIV);
1292 if (SL_ISERROR(fout))
1293 {
1294 fprintf(stderr,
1295 _("ERROR: cannot open %s (errnum = %ld)\n"), outpath, fout);
1296 free(new); free (outpath);
1297 _exit (EXIT_FAILURE);
1298 /*@notreached@*/
1299 return -1;
1300 }
1301
1302
1303 image = calloc(1,4096);
1304 if (!image)
1305 goto bail_mem;
1306 while (0 < (ii = sl_read (fp, &image[s], 4096)))
1307 {
1308 unsigned char * ptr;
1309 ilen += ii;
1310 s += 4096;
1311 ptr = realloc (image, (size_t) (4096 + s));
1312 if (ptr)
1313 image = ptr;
1314 else
1315 { free(image); image = NULL; }
1316 if (!image)
1317 goto bail_mem;
1318 }
1319
1320 printf(_("%ld bytes read\n"), ilen);
1321
1322
1323 for (k = 0; k < (ilen - 8); ++k)
1324 {
1325 if (image[k] == new_key[0] &&
1326 image[k+1] == new_key[1] &&
1327 image[k+2] == new_key[2] &&
1328 image[k+3] == new_key[3] &&
1329 image[k+4] == new_key[4] &&
1330 image[k+5] == new_key[5] &&
1331 image[k+6] == new_key[6] &&
1332 image[k+7] == new_key[7])
1333 {
1334 UINT32 kbuf[KEY_BYT/sizeof(UINT32)];
1335
1336 printf("%s", _("old key found\n"));
1337 h1 = sh_tiger_hash_uint32 (key, TIGER_DATA,
1338 (unsigned long)strlen(key),
1339 kbuf, KEY_BYT/sizeof(UINT32));
1340 copy_four( (unsigned char *) &(image[k]), h1[0]);
1341 copy_four( (unsigned char *) &(image[k+4]), h1[1]);
1342 (void) sl_write (fout, image, ilen);
1343 (void) sl_close (fout);
1344 printf(_("new file %s written\n"), outpath);
1345 free(new); free (outpath); free(image);
1346 _exit (EXIT_SUCCESS);
1347 /*@notreached@*/
1348 return 0;
1349 }
1350 }
1351
1352 fprintf(stderr, "%s",
1353 _("ERROR: old key not found\n"));
1354 free(new); free (outpath); free(image);
1355 _exit (EXIT_FAILURE);
1356 /*@notreached@*/
1357 return -1;
1358
1359
1360 bail_mem:
1361 fprintf(stderr, "%s",
1362 _("ERROR: out of memory\n"));
1363 if (new) free(new);
1364 if (outpath) free (outpath);
1365 if (image) free (image);
1366 _exit (EXIT_FAILURE);
1367 /*@notreached@*/
1368 return -1;
1369}
1370
1371
1372
1373
1374/* A simple en-/decoder, based on Vernam cipher. We use the
1375 * message as salt to hide the key by obtaining a different one-time
1376 * pad each time.
1377 * Should be safe against a listener on the network, but not against someone
1378 * with read access to the binary.
1379 */
1380void sh_util_encode (char * data, char * salt, int mode, char fill)
1381{
1382 static char cc1[17] = N_("0123456789ABCDEF");
1383 char cc[17] = "\0";
1384 register int i, j, j1 = 0, j2 = 0, j3;
1385 char * dez;
1386 char hashbuf[KEYBUF_SIZE];
1387
1388 SL_ENTER(_("sh_util_encode"));
1389
1390 /* init
1391 */
1392 (void) sl_strlcpy( cc, _(cc1), sizeof(cc));
1393
1394 /* max 128 bits keyspace
1395 */
1396 memset (skey->vernam, (int)fill, KEY_LEN+1);
1397
1398 dez = (char *) &(skey->ErrFlag[0]);
1399 sh_util_cpylong (skey->vernam, dez, 4);
1400 dez = (char *) &(skey->ErrFlag[1]);
1401 sh_util_cpylong (&skey->vernam[4], dez, 4);
1402
1403 skey->vernam[KEY_LEN] = '\0';
1404
1405 (void) sl_strlcpy(skey->vernam,
1406 sh_tiger_hash(skey->vernam, TIGER_DATA, KEY_LEN,
1407 hashbuf, sizeof(hashbuf)),
1408 KEY_LEN+1);
1409
1410 (void) sl_strlcpy(skey->vernam,
1411 sh_util_hmac_tiger (skey->vernam, salt, strlen(salt),
1412 hashbuf, sizeof(hashbuf)),
1413 KEY_LEN+1);
1414
1415 (void) sl_strlcpy(skey->vernam,
1416 sh_util_hmac_tiger (skey->vernam, (char*) new_key, 8,
1417 hashbuf, sizeof(hashbuf)),
1418 KEY_LEN+1);
1419
1420 /* The following routine adds/subtracts data[j] and vernam[j] mod 16.
1421 */
1422 j = 0;
1423 while (j < KEY_LEN)
1424 {
1425 for (i = 0; i < 16; ++i)
1426 {
1427 if (cc[i] == data[j]) j1 = i;
1428 if (cc[i] == skey->vernam[j]) j2 = i;
1429 }
1430 if (mode == 0)
1431 {
1432 j3 = j1 + j2;
1433 if (j3 > 15) j3 -= 16;
1434 data[j] = cc[j3];
1435 }
1436 else
1437 {
1438 j3 = j1 - j2;
1439 if (j3 < 0) j3 += 16;
1440 data[j] = cc[j3];
1441 }
1442 ++j;
1443 }
1444 SL_RET0(_("sh_util_encode"));
1445}
1446
1447/* server mode
1448 */
1449int sh_util_setserver (const char * dummy)
1450{
1451 SL_ENTER(_("sh_util_setserver"));
1452
1453 (void) dummy;
1454 sh.flag.isserver = GOOD;
1455 SL_RETURN((0),_("sh_util_setserver"));
1456}
1457
1458
1459int sh_util_setlooptime (const char * str)
1460{
1461 int i = atoi (str);
1462
1463 SL_ENTER(_("sh_util_setlooptime"));
1464
1465 if (i >= 0 && i < INT_MAX) {
1466 sh.looptime = i;
1467 SL_RETURN((0),_("sh_util_setlooptime"));
1468 } else {
1469 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
1470 _("loop time"), str);
1471 SL_RETURN((-1),_("sh_util_setlooptime"));
1472 }
1473}
1474
1475#if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE)
1476int sh_util_setchecksum (const char * str)
1477{
1478 static int reject = 0;
1479
1480 SL_ENTER(_("sh_util_setchecksum"));
1481
1482 if (reject == 1)
1483 SL_RETURN((0), _("sh_util_setchecksum"));
1484 reject = 1;
1485
1486 if (sl_strncmp (str, _("init"), sizeof("init")-1) == 0)
1487 {
1488 sh.flag.checkSum = SH_CHECK_INIT;
1489 }
1490 else if (sl_strncmp (str, _("update"), sizeof("update")-1) == 0)
1491 {
1492 if (S_TRUE == file_is_remote())
1493 {
1494 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
1495 _("checksum testing"), str);
1496 SL_RETURN((-1), _("sh_util_setchecksum"));
1497 }
1498 else
1499 {
1500 sh.flag.checkSum = SH_CHECK_CHECK;
1501 sh.flag.update = S_TRUE;
1502 }
1503 }
1504 else if (sl_strncmp (str, _("check"), sizeof("check")-1) == 0)
1505 {
1506 sh.flag.checkSum = SH_CHECK_CHECK;
1507 }
1508 /*
1509 else if (sl_strncmp (str, _("update"), sizeof("update")-1) == 0)
1510 {
1511 sh.flag.checkSum = SH_CHECK_INIT;
1512 sh.flag.update = S_TRUE;
1513 }
1514 */
1515 else if (sl_strncmp (str, _("none"), sizeof("none")-1) == 0)
1516 {
1517 sh.flag.checkSum = SH_CHECK_NONE;
1518 }
1519 else
1520 {
1521 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
1522 _("checksum testing"), str);
1523 SL_RETURN((-1), _("sh_util_setchecksum"));
1524 }
1525 SL_RETURN((0), _("sh_util_setchecksum"));
1526}
1527#endif
1528
1529/*@+charint@*/
1530unsigned char TcpFlag[8][PW_LEN+1] = {
1531#if (POS_TF == 1)
1532 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1533#endif
1534 { 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
1535#if (POS_TF == 2)
1536 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1537#endif
1538 { 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
1539#if (POS_TF == 3)
1540 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1541#endif
1542 { 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
1543#if (POS_TF == 4)
1544 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1545#endif
1546 { 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
1547#if (POS_TF == 5)
1548 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1549#endif
1550 { 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
1551#if (POS_TF == 6)
1552 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1553#endif
1554 { 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
1555#if (POS_TF == 7)
1556 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1557#endif
1558 { 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
1559#if (POS_TF == 8)
1560 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1561#endif
1562};
1563/*@-charint@*/
1564
1565/* initialize a key to a random value
1566 * rev 0.8
1567 */
1568int sh_util_keyinit (char * buf, long size)
1569{
1570 UINT32 bufy[6];
1571 int i;
1572 int status = 0;
1573 char * p;
1574 char hashbuf[KEYBUF_SIZE];
1575
1576 SL_ENTER(_("sh_util_keyinit"));
1577
1578 ASSERT((size <= KEY_LEN+1), _("size <= KEY_LEN+1"))
1579
1580 if (size > KEY_LEN+1)
1581 size = KEY_LEN+1;
1582
1583 /* seed / re-seed the PRNG if required
1584 */
1585 status = taus_seed ();
1586
1587 if (status == -1)
1588 sh_error_handle ((-1), FIL__, __LINE__, -1, MSG_ES_KEY1,
1589 _("taus_seed"));
1590
1591 for (i = 0; i < 6; ++i)
1592 bufy[i] = taus_get();
1593
1594 p = sh_tiger_hash ((char *) bufy, TIGER_DATA,
1595 (unsigned long)(6*sizeof(UINT32)),
1596 hashbuf, sizeof(hashbuf));
1597
1598 i = sl_strlcpy(buf, p, (size_t)size);
1599
1600 memset (bufy, 0, 6*sizeof(UINT32));
1601
1602 if ((status == 0) && (!SL_ISERROR(i)) )
1603 SL_RETURN((0),_("sh_util_keyinit"));
1604
1605 if (SL_ISERROR(i))
1606 sh_error_handle ((-1), FIL__, __LINE__, i, MSG_ES_KEY2,
1607 _("sl_strlcpy"));
1608
1609 SL_RETURN((-1),_("sh_util_keyinit"));
1610}
1611
1612#if defined(SH_WITH_CLIENT) || defined(SH_STANDALONE)
1613
1614static unsigned char sh_obscure_index[256];
1615static int sh_obscure_no_check = S_FALSE;
1616
1617int sh_util_valid_utf8 (const unsigned char * str)
1618{
1619 const int sh_val_utf8_1 = 1;
1620 const int sh_val_utf8_2 = 2;
1621 const int sh_val_utf8_3 = 3;
1622 const int sh_val_utf8_4 = 4;
1623
1624 size_t len = strlen((const char *)str);
1625 size_t l = 0;
1626 int typ = 0;
1627 unsigned char c = '\0';
1628 unsigned char c2[2] = { 0x00, 0x00 };
1629 unsigned char c3[3] = { 0x00, 0x00, 0x00 };
1630
1631
1632#define SH_VAL_UTF8_1 ((c != '\0') && ((c & 0x80) == 0x00))
1633#define SH_VAL_UTF8_2 ((c != '\0') && ((c & 0xE0) == 0xC0)) /* 110x xxxx */
1634#define SH_VAL_UTF8_3 ((c != '\0') && ((c & 0xF0) == 0xE0)) /* 1110 xxxx */
1635#define SH_VAL_UTF8_4 ((c != '\0') && ((c & 0xF8) == 0xF0)) /* 1111 0xxx */
1636#define SH_VAL_UTF8_N ((c != '\0') && ((c & 0xC0) == 0x80)) /* 10xx xxxx */
1637#define SH_VAL_BAD ((c == '"') || (c == '\t') || (c == '\b') || \
1638 (c == '\f') || (c == '\n') || \
1639 (c == '\r') || (c == '\v') || iscntrl((int) c) || \
1640 (c != ' ' && !isgraph ((int) c)))
1641
1642 while(l < len)
1643 {
1644 c = str[l];
1645
1646 if (SH_VAL_UTF8_1)
1647 {
1648 if (!(SH_VAL_BAD && (sh_obscure_index[c] != 1)))
1649 {
1650 typ = sh_val_utf8_1;
1651 ++l; continue;
1652 }
1653 else
1654 {
1655 return S_FALSE;
1656 }
1657 }
1658 else if (SH_VAL_UTF8_2)
1659 {
1660 typ = sh_val_utf8_2;
1661 c2[0] = c;
1662 if ((c & 0x3e) != 0x00) /* !(overlong 2-byte seq.) */
1663 {
1664 ++l;
1665 if (l != len) {
1666 c = str[l];
1667 if(SH_VAL_UTF8_N) {
1668 c2[1] = c;
1669 ++l; continue;
1670 }
1671 else {
1672 return S_FALSE;
1673 }
1674 }
1675 else {
1676 return S_FALSE;
1677 }
1678 }
1679 else
1680 {
1681 return S_FALSE; /* overlong 2-byte seq. */
1682 }
1683 }
1684 else if (SH_VAL_UTF8_3)
1685 {
1686 typ = sh_val_utf8_3;
1687 c3[0] = c;
1688 ++l; if (l == len) return S_FALSE; c = str[l];
1689 if(!SH_VAL_UTF8_N) return S_FALSE;
1690 if (((str[l-1] & 0x1F) == 0x00) && ((c & 0x60) == 0x00))
1691 return S_FALSE; /* overlong 3-byte seq. */
1692 c3[1] = c;
1693 ++l; if (l == len) return S_FALSE; c = str[l];
1694 if(!SH_VAL_UTF8_N) return S_FALSE;
1695 c3[2] = c;
1696 ++l; continue;
1697 }
1698 else if (SH_VAL_UTF8_4)
1699 {
1700 typ = sh_val_utf8_4;
1701 ++l; if (l == len) return S_FALSE; c = str[l];
1702 if(!SH_VAL_UTF8_N) return S_FALSE;
1703 if (((str[l-1] & 0x0F) == 0x00) && ((c & 0x70) == 0x00))
1704 return S_FALSE; /* overlong 4-byte seq. */
1705 ++l; if (l == len) return S_FALSE; c = str[l];
1706 if(!SH_VAL_UTF8_N) return S_FALSE;
1707 ++l; if (l == len) return S_FALSE; c = str[l];
1708 if(!SH_VAL_UTF8_N) return S_FALSE;
1709 ++l; continue;
1710 }
1711 return S_FALSE;
1712 }
1713
1714 /* last character is invisible (space or else)
1715 */
1716 if (typ == sh_val_utf8_1)
1717 {
1718 if (c != ' ')
1719 return S_TRUE;
1720 else
1721 return S_FALSE;
1722 }
1723 else if (typ == sh_val_utf8_2)
1724 {
1725 if (c2[0] == 0xC2 && c2[1] == 0xA0) /* nbsp */
1726 return S_FALSE;
1727 else
1728 return S_TRUE;
1729 }
1730 else if (typ == sh_val_utf8_3)
1731 {
1732 if (c3[0] == 0xE2)
1733 {
1734 if (c3[1] == 0x80 && c3[2] >= 0x80 && c3[2] <= 0x8F)
1735 return S_FALSE; /* various spaces, left-to-right, right-to-left */
1736 else if (c3[1] == 0x80 && (c3[2] == 0xA8 || c3[2] == 0xA9 ||
1737 c3[2] == 0xAD || c3[2] == 0xAF))
1738 return S_FALSE; /* line sep, para sep, zw word joiner, nnbsp */
1739 else if (c3[1] == 0x81 && (c3[2] == 0xA0 || c3[2] == 0xA1 ||
1740 c3[2] == 0x9F))
1741 return S_FALSE; /* word joiner, function app, math space */
1742 else
1743 return S_TRUE;
1744 }
1745 else if (c3[0] == 0xE3 && c3[1] == 0x80 && c3[2] == 0x80)
1746 {
1747 return S_FALSE; /* ideographic space */
1748 }
1749 else if (c3[0] == 0xEF && c3[1] == 0xBB && c3[2] == 0xBF)
1750 {
1751 return S_FALSE; /* zwnbsp */
1752 }
1753 else
1754 {
1755 return S_TRUE;
1756 }
1757 }
1758 else
1759 {
1760 return S_TRUE;
1761 }
1762}
1763
1764
1765int sh_util_obscure_ok (const char * str)
1766{
1767 unsigned long i;
1768 char * endptr = NULL;
1769
1770 SL_ENTER(_("sh_util_obscure_ok"));
1771
1772 if (0 == sl_strncmp("all", str, 3))
1773 {
1774 for (i = 0; i < 255; ++i)
1775 {
1776 sh_obscure_index[i] = (unsigned char)1;
1777 }
1778 sh_obscure_no_check = S_TRUE;
1779 SL_RETURN(0, _("sh_util_obscure_ok"));
1780 }
1781
1782 sh_obscure_no_check = S_FALSE;
1783
1784 for (i = 0; i < 255; ++i)
1785 {
1786 sh_obscure_index[i] = (unsigned char)0;
1787 }
1788
1789 i = strtoul (str, &endptr, 0);
1790 if (i > 255)
1791 {
1792 SL_RETURN(-1, _("sh_util_obscure_ok"));
1793 }
1794 sh_obscure_index[i] = (unsigned char)1;
1795 if (*endptr == ',')
1796 ++endptr;
1797
1798 while (*endptr != '\0')
1799 {
1800 i = strtoul (endptr, &endptr, 0);
1801 if (i > 255)
1802 {
1803 SL_RETURN(-1, _("sh_util_obscure_ok"));
1804 }
1805 sh_obscure_index[i] = (unsigned char)1;
1806 if (*endptr == ',')
1807 ++endptr;
1808 }
1809 SL_RETURN(0, _("sh_util_obscure_ok"));
1810}
1811
1812static int sh_obscure_check_utf8 = S_FALSE;
1813
1814int sh_util_obscure_utf8 (const char * c)
1815{
1816 int i;
1817 SL_ENTER(_("sh_util_obscure_utf8"));
1818 i = sh_util_flagval(c, &(sh_obscure_check_utf8));
1819 if (sh_obscure_check_utf8 == S_TRUE)
1820 sh_obscure_no_check = S_FALSE;
1821 SL_RETURN(i, _("sh_util_obscure_utf8"));
1822}
1823
1824
1825int sh_util_obscurename (ShErrLevel level, const char * name_orig, int flag)
1826{
1827 const unsigned char * name = (const unsigned char *) name_orig;
1828 char * safe;
1829 unsigned int i;
1830 size_t len = 0;
1831
1832 SL_ENTER(_("sh_util_obscurename"));
1833
1834 ASSERT_RET((name != NULL), _("name != NULL"), (0))
1835
1836 if (sh_obscure_no_check == S_FALSE)
1837 {
1838 if (sh_obscure_check_utf8 != S_TRUE)
1839 {
1840 /* -- Check name. --
1841 */
1842 while (*name != '\0')
1843 {
1844 if ( (*name) > 0x7F || (*name) == '"' || (*name) == '\t' ||
1845 (*name) == '\b' || (*name) == '\f' ||
1846 (*name) == '\n' || (*name) == '\r' ||
1847 (*name) == '\v' || iscntrl((int) *name) ||
1848 ((*name) != ' ' && !isgraph ((int) *name)) )
1849 {
1850 i = (unsigned char) *name;
1851 if (sh_obscure_index[i] != (unsigned char)1)
1852 {
1853 goto err;
1854 }
1855 }
1856 name++; ++len;
1857 }
1858
1859 /* Check for blank at end of name
1860 */
1861 if ((len > 0) && (name_orig[len-1] == ' '))
1862 {
1863 goto err;
1864 }
1865 }
1866 else
1867 {
1868 if (S_FALSE == sh_util_valid_utf8(name))
1869 {
1870 goto err;
1871 }
1872 SL_RETURN((0),_("sh_util_obscurename"));
1873 }
1874 }
1875
1876 SL_RETURN((0),_("sh_util_obscurename"));
1877
1878 err:
1879
1880 if (flag == S_TRUE)
1881 {
1882 safe = sh_util_safe_name (name_orig);
1883 sh_error_handle (level, FIL__, __LINE__, 0, MSG_FI_OBSC,
1884 safe);
1885 SH_FREE(safe);
1886 }
1887 SL_RETURN((-1),_("sh_util_obscurename"));
1888}
1889
1890#endif
1891
1892/* returns freshly allocated memory, return value should be free'd
1893 */
1894char * sh_util_dirname(const char * fullpath)
1895{
1896 char * retval;
1897 size_t len;
1898 char * tmp;
1899
1900 SL_ENTER(_("sh_util_dirname"));
1901
1902 ASSERT_RET ((fullpath != NULL), _("fullpath != NULL"), (NULL))
1903 ASSERT_RET ((*fullpath == '/'), _("*fullpath == '/'"), (NULL))
1904
1905 retval = sh_util_strdup(fullpath);
1906
1907 tmp = retval;
1908 while (*tmp == '/') ++tmp;
1909
1910 /* (1) only leading slashes -- return exact copy
1911 */
1912 if (*tmp == '\0')
1913 {
1914 SL_RETURN(retval, _("sh_util_dirname"));
1915 }
1916
1917 /* (2) there are non-slash characters, so delete trailing slashes
1918 */
1919 len = sl_strlen (retval); /* retval[len] is terminating '\0' */
1920
1921 while (len > 1 && retval[len-1] == '/') /* delete trailing slash */
1922 {
1923 retval[len-1] = '\0';
1924 --len;
1925 }
1926
1927 /* (3) now delete all non-slash characters up to the preceding slash
1928 */
1929 while (len > 1 && retval[len-1] != '/') {
1930 retval[len-1] = '\0';
1931 --len;
1932 }
1933
1934 /* (4a) only leading slashes left, so return this
1935 */
1936 if (&(retval[len]) == tmp)
1937 {
1938 SL_RETURN(retval, _("sh_util_dirname"));
1939 }
1940
1941 /* (4b) strip trailing slash(es) of parent directory
1942 */
1943 while (len > 1 && retval[len-1] == '/') {
1944 retval[len-1] = '\0';
1945 --len;
1946 }
1947 SL_RETURN(retval, _("sh_util_dirname"));
1948
1949}
1950
1951/* returns freshly allocated memory, return value should be free'd
1952 */
1953char * sh_util_basename(const char * fullpath)
1954{
1955 char * retval = NULL;
1956 const char * tmp;
1957 char * tmp2;
1958 char * c;
1959 size_t len;
1960
1961 SL_ENTER(_("sh_util_basename"));
1962
1963 ASSERT_RET ((fullpath != NULL), _("fullpath != NULL"), (NULL))
1964
1965 tmp = fullpath; while (*tmp == '/') ++tmp;
1966 if (*tmp == '\0')
1967 {
1968 retval = sh_util_strdup(fullpath);
1969 }
1970 else
1971 {
1972 tmp2 = sh_util_strdup(tmp);
1973 len = sl_strlen (tmp2);
1974
1975 while (len > 1 && tmp2[len-1] == '/')
1976 {
1977 tmp2[len-1] = '\0';
1978 --len;
1979 }
1980
1981 if (tmp2) /* for llvm/clang analyzer */
1982 {
1983 c = strrchr(tmp2, '/');
1984 if (c)
1985 {
1986 retval = sh_util_strdup(++c);
1987 SH_FREE(tmp2);
1988 }
1989 else
1990 {
1991 retval = tmp2;
1992 }
1993 }
1994 }
1995
1996 SL_RETURN(retval, _("sh_util_basename"));
1997}
1998
1999#define SH_ESCAPE_SPACE 1
2000#define SH_DONT_ESCAPE_SPACE 0
2001char * sh_util_safe_name_int (const char * name, int escape_space);
2002
2003char * sh_util_safe_name (const char * name)
2004{
2005 return sh_util_safe_name_int (name, SH_ESCAPE_SPACE);
2006}
2007
2008char * sh_util_safe_name_keepspace (const char * name)
2009{
2010 return sh_util_safe_name_int (name, SH_DONT_ESCAPE_SPACE);
2011}
2012
2013/* returns freshly allocated memory, return value should be free'd
2014 */
2015char * sh_util_safe_name_int (const char * name, int escape_space)
2016{
2017 register int i = 0;
2018 const char * p;
2019 char * retval;
2020 char oct[32];
2021 char format[16];
2022 size_t len;
2023
2024 SL_ENTER(_("sh_util_safe_name"));
2025
2026 if (name == NULL)
2027 {
2028 /* return an allocated array
2029 */
2030 retval = SH_ALLOC(7);
2031 (void) sl_strlcpy(retval, _("(null)"), 7);
2032 SL_RETURN(retval, _("sh_util_safe_name"));
2033 }
2034
2035 /*
2036 ASSERT_RET ((name != NULL), _("name != NULL"), _("NULL"))
2037 */
2038
2039 len = sl_strlen(name);
2040 p = name;
2041
2042#ifdef SH_USE_XML
2043 if (sl_ok_muls (6, len) && sl_ok_adds ((6*len), 2))
2044 { retval = SH_ALLOC(6 * len + 2); }
2045 else
2046 {
2047 /* return an allocated array
2048 */
2049 retval = SH_ALLOC(11);
2050 (void) sl_strlcpy(retval, _("(overflow)"), 11);
2051 SL_RETURN(retval, _("sh_util_safe_name"));
2052 }
2053#else
2054 if (sl_ok_muls (4, len) && sl_ok_adds ((4*len), 2))
2055 { retval = SH_ALLOC(4 * len + 2); }
2056 else
2057 {
2058 /* return an allocated array
2059 */
2060 retval = SH_ALLOC(11);
2061 (void) sl_strlcpy(retval, _("(overflow)"), 11);
2062 SL_RETURN(retval, _("sh_util_safe_name"));
2063 }
2064#endif
2065
2066 (void) sl_strncpy(format, _("%c%03o"), 16);
2067
2068 while (*p != '\0') {
2069 /* Most frequent cases first
2070 */
2071 if ( ((*p) >= 'a' && (*p) <= 'z') || ((*p) == '/') || ((*p) == '.') ||
2072 ((*p) >= '0' && (*p) <= '9') ||
2073 ((*p) >= 'A' && (*p) <= 'Z')) {
2074 retval[i] = *p;
2075 } else if ( (*p) == '\\') { /* backslash */
2076 retval[i] = '\\'; ++i;
2077 retval[i] = '\\';
2078 } else if ( (*p) == '\n') { /* newline */
2079 retval[i] = '\\'; ++i;
2080 retval[i] = 'n';
2081 } else if ( (*p) == '\b') { /* backspace */
2082 retval[i] = '\\'; ++i;
2083 retval[i] = 'b';
2084 } else if ( (*p) == '\r') { /* carriage return */
2085 retval[i] = '\\'; ++i;
2086 retval[i] = 'r';
2087 } else if ( (*p) == '\t') { /* horizontal tab */
2088 retval[i] = '\\'; ++i;
2089 retval[i] = 't';
2090 } else if ( (*p) == '\v') { /* vertical tab */
2091 retval[i] = '\\'; ++i;
2092 retval[i] = 'v';
2093 } else if ( (*p) == '\f') { /* form-feed */
2094 retval[i] = '\\'; ++i;
2095 retval[i] = 'f';
2096#ifdef WITH_DATABASE
2097 } else if ( (*p) == '\'') { /* single quote */
2098 retval[i] = '\\'; ++i;
2099 retval[i] = '\'';
2100#endif
2101 } else if ( (*p) == ' ') { /* space */
2102 if (escape_space) {
2103 retval[i] = '\\'; ++i;
2104 retval[i] = ' ';
2105 }
2106 else {
2107 retval[i] = *p;
2108 }
2109#ifdef SH_USE_XML
2110 } else if ( (*p) == '"') { /* double quote */
2111 retval[i] = '&'; ++i;
2112 retval[i] = 'q'; ++i;
2113 retval[i] = 'u'; ++i;
2114 retval[i] = 'o'; ++i;
2115 retval[i] = 't'; ++i;
2116 retval[i] = ';';
2117 } else if ( (*p) == '&') { /* ampersand */
2118 retval[i] = '&'; ++i;
2119 retval[i] = 'a'; ++i;
2120 retval[i] = 'm'; ++i;
2121 retval[i] = 'p'; ++i;
2122 retval[i] = ';';
2123 } else if ( (*p) == '<') { /* left angle */
2124 retval[i] = '&'; ++i;
2125 retval[i] = 'l'; ++i;
2126 retval[i] = 't'; ++i;
2127 retval[i] = ';';
2128 } else if ( (*p) == '>') { /* right angle */
2129 retval[i] = '&'; ++i;
2130 retval[i] = 'g'; ++i;
2131 retval[i] = 't'; ++i;
2132 retval[i] = ';';
2133#else
2134 } else if ( (*p) == '"') { /* double quote */
2135 retval[i] = '\\'; ++i;
2136 retval[i] = '\"';
2137#endif
2138 } else if (!isgraph ((int) *p)) { /* not printable */
2139 /*@-bufferoverflowhigh -formatconst@*/
2140 /* flawfinder: ignore */
2141 sprintf(oct, format, '\\', /* known to fit */
2142 (unsigned char) *p);
2143 /*@+bufferoverflowhigh +formatconst@*/
2144 retval[i] = oct[0]; ++i;
2145 retval[i] = oct[1]; ++i;
2146 retval[i] = oct[2]; ++i;
2147 retval[i] = oct[3];
2148 } else {
2149 retval[i] = *p;
2150 }
2151 ++p;
2152 ++i;
2153 }
2154 retval[i] = '\0';
2155 SL_RETURN(retval, _("sh_util_safe_name"));
2156}
2157
2158int sh_util_isnum (const char *str)
2159{
2160 const char *p = str;
2161
2162 SL_ENTER(_("sh_util_isnum"));
2163
2164 ASSERT_RET ((str != NULL), _("str != NULL"), (-1))
2165
2166 while (p) {
2167 if (!isdigit((int) *p) )
2168 SL_RETURN((-1), _("sh_util_isnum"));
2169 ++p;
2170 }
2171 SL_RETURN((0), _("sh_util_isnum"));
2172}
2173
2174char * sh_util_strconcat (const char * arg1, ...)
2175{
2176 size_t length, l2;
2177 char * s;
2178 char * strnew;
2179 va_list vl;
2180
2181 SL_ENTER(_("sh_util_strconcat"));
2182
2183 ASSERT_RET ((arg1 != NULL), _("arg1 != NULL"), (NULL))
2184
2185 length = sl_strlen (arg1) + 1;
2186
2187 va_start (vl, arg1);
2188 s = va_arg (vl, char * );
2189 while (s != NULL)
2190 {
2191 l2 = sl_strlen (s);
2192 if (sl_ok_adds(length, l2))
2193 length += l2;
2194 else
2195 SL_RETURN(NULL, _("sh_util_strconcat"));
2196 s = va_arg (vl, char * );
2197 }
2198 va_end (vl);
2199
2200 if (sl_ok_adds(length, 2))
2201 strnew = SH_ALLOC( length + 2 );
2202 else
2203 SL_RETURN(NULL, _("sh_util_strconcat"));
2204
2205 /* cppcheck-suppress uninitvar */
2206 strnew[0] = '\0';
2207
2208 (void) sl_strlcpy (strnew, arg1, length + 2);
2209
2210 va_start (vl, arg1);
2211 s = va_arg (vl, char * );
2212 while (s)
2213 {
2214 (void) sl_strlcat (strnew, s, length + 2);
2215 s = va_arg (vl, char * );
2216 }
2217 va_end (vl);
2218
2219 SL_RETURN(strnew, _("sh_util_strconcat"));
2220}
2221
2222static const char bto64_0[] = N_("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789()");
2223static char bto64[65] = { '\0' };
2224
2225
2226size_t sh_util_base64_enc (unsigned char * out,
2227 const unsigned char * instr,
2228 size_t lin)
2229{
2230 int ll;
2231 unsigned char a, b, c;
2232 size_t len = 0;
2233 size_t j = 0;
2234
2235 start:
2236 if (bto64[0] != '\0')
2237 {
2238 if (instr /* && *instr *//* need to handle binary data */)
2239 {
2240 if (lin == 0)
2241 lin = strlen((const char *)instr);
2242
2243 if (lin > 0)
2244 {
2245 do {
2246 ll = 0;
2247
2248 if (len < lin)
2249 { a = *instr; ++instr; ++len; ++ll; }
2250 else
2251 { a = 0; }
2252 if (len < lin)
2253 { b = *instr; ++instr; ++len; ++ll; }
2254 else
2255 { b = 0; }
2256 if (len < lin)
2257 { c = *instr; ++instr; ++len; ++ll; }
2258 else
2259 { c = 0; }
2260
2261 *out = bto64[ a >> 2 ];
2262 ++j; ++out;
2263 *out = bto64[ ((a & 0x03) << 4) | ((b & 0xf0) >> 4) ];
2264 ++j; ++out;
2265 *out = (unsigned char) (ll > 1 ? bto64[ ((b & 0x0f) << 2) | ((c & 0xc0) >> 6) ] : '?');
2266 ++j; ++out;
2267 *out = (unsigned char) (ll > 2 ? bto64[ c & 0x3f ] : '?');
2268 ++j; ++out;
2269 } while (len < lin);
2270 }
2271 }
2272 *out = '\0';
2273 return j;
2274 }
2275
2276 memcpy(bto64, _(bto64_0), 65);
2277 goto start;
2278}
2279
2280size_t sh_util_base64_enc_alloc (char **out, const char *in, size_t inlen)
2281{
2282 size_t outlen = SH_B64_SIZ(inlen);
2283
2284 if (inlen > outlen) /* overflow */
2285 {
2286 *out = NULL;
2287 return 0;
2288 }
2289
2290 *out = SH_ALLOC(outlen);
2291 return sh_util_base64_enc((unsigned char *)*out, (const unsigned char *)in, inlen);
2292}
2293
2294size_t sh_util_base64_dec (unsigned char *out,
2295 const unsigned char *in,
2296 size_t lin)
2297{
2298 size_t i;
2299 unsigned char c;
2300 unsigned char b;
2301 size_t lout = 0;
2302 unsigned int w = 0;
2303
2304 if (out && in)
2305 {
2306 if (lin == 0)
2307 lin = strlen((const char *)in);
2308
2309 for (i = 0; i < lin; i++)
2310 {
2311 c = *in; ++in;
2312 b = 0;
2313
2314 if ((c >= 'A') && (c <= 'Z'))
2315 {
2316 b = (c - 'A');
2317 }
2318 else if ((c >= 'a') && (c <= 'z'))
2319 {
2320 b = (c - 'a' + 26);
2321 }
2322 else if ((c >= '0') && (c <= '9'))
2323 {
2324 b = (c - '0' + 52);
2325 }
2326 else if (c == '(' || c == '+')
2327 {
2328 b = 62;
2329 }
2330 else if (c == ')' || c == '/')
2331 {
2332 b = 63;
2333 }
2334 else if (c == '?' || c == '=')
2335 {
2336 /* last byte was written to, but will now get
2337 * truncated
2338 */
2339 if (lout > 0) --lout;
2340 break;
2341 }
2342
2343 if (w == 0)
2344 {
2345 *out = (b << 2) & 0xfc;
2346 ++lout;
2347 }
2348 else if (w == 1)
2349 {
2350 *out |= (b >> 4) & 0x03;
2351 ++out;
2352 *out = (b << 4) & 0xf0;
2353 ++lout;
2354 }
2355 else if (w == 2)
2356 {
2357 *out |= (b >> 2) & 0x0f;
2358 ++out;
2359 *out = (b << 6) & 0xc0;
2360 ++lout;
2361 }
2362 else if (w == 3)
2363 {
2364 *out |= b & 0x3f;
2365 ++out;
2366 }
2367
2368 ++w;
2369
2370 if (w == 4)
2371 {
2372 w = 0;
2373 }
2374 }
2375 *out = '\0';
2376 }
2377 return lout;
2378}
2379
2380size_t sh_util_base64_dec_alloc (unsigned char **out, const unsigned char *in,
2381 size_t lin)
2382{
2383 size_t lout = 3 * (lin / 4) + 2;
2384
2385 *out = SH_ALLOC(lout);
2386
2387 return sh_util_base64_dec (*out, in, lin);
2388}
2389
2390
2391#ifdef HAVE_REGEX_H
2392
2393#include <regex.h>
2394
2395int sh_util_regcmp (char * regex_str, char * in_str)
2396{
2397#if defined(REG_ESPACE)
2398 int status = REG_ESPACE;
2399#else
2400 int status = -1;
2401#endif
2402 regex_t preg;
2403 char * errbuf;
2404
2405 SL_ENTER(_("sh_util_regcmp"));
2406
2407 status = regcomp(&preg, regex_str, REG_NOSUB|REG_EXTENDED);
2408
2409 if (status == 0)
2410 {
2411 if ((status = regexec(&preg, in_str, 0, NULL, 0)) == 0)
2412 {
2413 regfree (&preg);
2414 SL_RETURN((0), _("sh_util_regcmp"));
2415 }
2416 }
2417
2418 if (status != 0 && status != REG_NOMATCH)
2419 {
2420 errbuf = SH_ALLOC(BUFSIZ);
2421 (void) regerror(status, &preg, errbuf, BUFSIZ);
2422 errbuf[BUFSIZ-1] = '\0';
2423 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_E_REGEX,
2424 errbuf, regex_str);
2425 SH_FREE(errbuf);
2426 }
2427
2428 regfree (&preg);
2429 SL_RETURN((-1), _("sh_util_regcmp"));
2430}
2431
2432#endif
2433
2434
2435
2436
2437
2438
2439
2440
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