source: trunk/src/sh_utils.c@ 497

Last change on this file since 497 was 481, checked in by katerina, 9 years ago

Enhancements and fixes for tickets #374, #375, #376, #377, #378, and #379.
File size: 54.3 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 if (NULL == freopen(ttyname(STDERR_FILENO), "r", stdin))
227 {
228 sh_error_handle ((-1), FIL__, __LINE__, 0,
229 MSG_E_SUBGEN,
230 _("Cannot continue: stdin is not a terminal"),
231 _("sh_util_ask_update"));
232 exit(EXIT_FAILURE);
233 }
234 }
235 else
236 {
237 sh_error_handle ((-1), FIL__, __LINE__, 0,
238 MSG_E_SUBGEN,
239 _("Cannot continue: stdin is not a terminal"),
240 _("sh_util_ask_update"));
241 exit(EXIT_FAILURE);
242 }
243 }
244#endif
245
246 if (sh_ask_update == S_TRUE)
247 {
248 tmp = sh_util_safe_name (path);
249 fprintf (stderr, _("Update %s [Y/n] ? "), tmp);
250 SH_FREE(tmp);
251 while (1 == 1)
252 {
253 c = fgetc(stdin); inchar = c;
254 /*@+charintliteral@*/
255 while (c != '\n' && c != EOF)
256 c = fgetc(stdin);
257 /* fprintf(stderr, "CHAR (1): %c\n", inchar); */
258 if (inchar == 'Y' || inchar == 'y' || inchar == '\n')
259 {
260 break;
261 }
262 else if (inchar == 'n' || inchar == 'N')
263 {
264 i = S_FALSE;
265 break;
266 }
267 else
268 {
269 fprintf(stderr, "%s", _("Please answer y(es) or n(o)\n"));
270 }
271 /*@-charintliteral@*/
272 }
273 }
274
275 SL_RETURN(i, _("sh_util_ask_update"));
276}
277
278int sh_util_hidesetup(const char * c)
279{
280 int i;
281 SL_ENTER(_("sh_util_hidesetup"));
282 i = sh_util_flagval(c, &(sh.flag.hidefile));
283
284 SL_RETURN(i, _("sh_util_hidesetup"));
285}
286
287char * sh_util_acl_compact(char * buf, ssize_t len)
288{
289 unsigned char * p = (unsigned char *) buf;
290 int state = 0;
291 ssize_t rem = 0;
292 char * out;
293
294 SH_VALIDATE_NE(buf, NULL);
295 SH_VALIDATE_GE(len, 0);
296
297 out = SH_ALLOC(len + 1);
298
299 while (*p != '\0') {
300
301 /* -- not at start or after newline
302 */
303 if (state == 1) {
304 if (*p == '\n' || *p == ' ' || *p == '\t' || *p == '#') {
305 while (*p != '\n') {
306 ++p;
307 if (*p == '\0') {
308 goto exit_it;
309 }
310 }
311 out[rem] = ','; ++rem; /* <-- ensures (rem > 0) is true */
312 while (p[1] == '\n') ++p; /* scan over consecutive newlines */
313 state = 0;
314 if (p[1] == '\0') {
315 out[rem-1] = '\0'; /* rem > 0 because of 4 lines above */
316 break;
317 }
318 }
319 else {
320 if (*p <= 0x7F && isgraph((int) *p)) {
321 out[rem] = (char) *p; ++rem;
322 }
323 }
324 }
325
326 /* -- at start or after newline
327 */
328 else /* if (state == 0) */ {
329 if (0 == strncmp((char *) p, "user", 4)) {
330 out[rem] = 'u'; ++rem;
331 p += 3;
332 } else if (0 == strncmp((char *) p, "group", 5)) {
333 out[rem] = 'g'; ++rem;
334 p += 4;
335 } else if (0 == strncmp((char *) p, "mask", 4)) {
336 out[rem] = 'm'; ++rem;
337 p += 3;
338 } else if (0 == strncmp((char *) p, "other", 5)) {
339 out[rem] = 'o';
340 p += 4; ++rem;
341 } else if (*p == '\0') {
342 if (rem > 0) { out[rem-1] = '\0'; }
343 break;
344 } else {
345 if (*p <= 0x7F && isprint((int) *p)) {
346 out[rem] = (char) *p; ++rem;
347 }
348 }
349 state = 1;
350 }
351 ++p;
352 }
353 exit_it:
354 out[rem] = '\0';
355 return out;
356}
357
358
359char * sh_util_strdup_l (const char * str, size_t len)
360{
361 char * p = NULL;
362
363 SL_ENTER(_("sh_util_strdup_l"));
364
365 SH_VALIDATE_NE(str, NULL);
366 SH_VALIDATE_NE(len, 0);
367
368 if (str && sl_ok_adds (len, 1))
369 {
370 p = SH_ALLOC (len + 1);
371 (void) memcpy (p, str, len+1);
372 }
373 else
374 {
375 safe_fatal(_("integer overflow in sh_util_strdup_l"), FIL__, __LINE__);
376 }
377 SL_RETURN( p, _("sh_util_strdup_l"));
378}
379
380char * sh_util_strdup (const char * str)
381{
382 char * p = NULL;
383 size_t len;
384
385 SL_ENTER(_("sh_util_strdup"));
386
387 SH_VALIDATE_NE(str, NULL);
388
389 if (str)
390 {
391 len = sl_strlen(str);
392 p = SH_ALLOC (len + 1);
393 (void) memcpy (p, str, len+1);
394 }
395 SL_RETURN( p, _("sh_util_strdup"));
396}
397
398char * sh_util_strdup_track (const char * str, char * file, int line)
399{
400 char * p = NULL;
401 size_t len;
402
403 SL_ENTER(_("sh_util_strdup_track"));
404
405 SH_VALIDATE_NE(str, NULL);
406
407 if (str)
408 {
409 len = sl_strlen(str);
410 p = SH_OALLOC (len + 1, file, line);
411 (void) memcpy (p, str, len+1);
412 }
413 SL_RETURN( p, _("sh_util_strdup_track"));
414}
415
416/* by the eircom.net computer incident
417 * response team
418 */
419char * sh_util_strsep (char **str, const char *delim)
420{
421 char *ret, *c;
422 const char *d;
423
424 SL_ENTER(_("sh_util_strsep"));
425 ret = *str;
426
427 SH_VALIDATE_NE(ret, NULL);
428
429 if (*str)
430 {
431 for (c = *str; *c != '\0'; c++) {
432 for (d = delim; *d != '\0'; d++) {
433 if (*c == *d) {
434 *c = '\0';
435 *str = c + 1;
436 SL_RETURN(ret, _("sh_util_strsep"));
437 }
438 }
439 }
440 }
441
442 /* If we get to here, there's no delimiters in the string */
443 *str = NULL;
444 SL_RETURN(ret, _("sh_util_strsep"));
445}
446
447
448/* returned string must be free'd by caller.
449 */
450char * sh_util_formatted (const char * formatt, st_format * ftab)
451{
452 struct tm * time_ptr;
453 size_t size;
454 size_t isiz;
455 char * fmt = NULL;
456 char * p;
457 char * q;
458 char * outstr;
459 int i;
460 int j;
461 time_t inpp;
462
463 char * clist[16] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
464 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL };
465 int nn = 0;
466
467 SL_ENTER(_("sh_util_formatted"));
468
469 if (formatt == NULL || ftab == NULL || *formatt == '\0')
470 SL_RETURN(NULL, _("sh_util_formatted"));
471
472 /* -- save the format (we overwrite it !!) --
473 */
474 size = sl_strlen(formatt);
475
476 if (!sl_ok_adds(size, 1))
477 SL_RETURN(NULL, _("sh_util_formatted"));
478
479 ++size;
480 fmt = SH_ALLOC(size);
481 (void) sl_strlcpy(fmt, formatt, size);
482
483 p = fmt;
484
485 j = 0;
486 while (ftab[j].fchar != '\0') {
487 if (ftab[j].type != S_FMT_STRING)
488 ftab[j].data_str = NULL;
489 ++j;
490 }
491
492 while (p != NULL && *p != '\0' && NULL != (q = strchr(p, '%')))
493 {
494 ++q;
495
496 /* fprintf(stderr, "p == %s q == %s\n", p, q); */
497
498 /* -- end of string is a '%' --
499 */
500 if (*q == '\0')
501 {
502 --q;
503 *q = '\0';
504 break;
505 }
506
507 i = 0;
508 j = 0;
509
510 /* -- search the format char in input table --
511 * put (nn < 16) here -> all remaining %foo will be
512 * converted to %%
513 */
514 while (ftab[j].fchar != '\0' && nn < 16)
515 {
516 if (ftab[j].fchar == *q)
517 {
518 /* -- Convert it to a string format (%s). --
519 */
520 *q = 's'
521;
522 i = 1;
523
524 switch(ftab[j].type) {
525
526 case S_FMT_STRING:
527 {
528 isiz = sl_strlen(ftab[j].data_str);
529 if (isiz > 0 && sl_ok_adds(size, isiz))
530 {
531 size += isiz;
532 clist[nn] = ftab[j].data_str;
533 ++nn;
534 }
535 else
536 *q = '%';
537 goto endsrch;
538 }
539 break;
540
541 case S_FMT_ULONG:
542 {
543 ftab[j].data_str = (char *) SH_ALLOC(64);
544 /*@-bufferoverflowhigh@*/
545 sprintf (ftab[j].data_str, "%lu", /* known to fit */
546 ftab[j].data_ulong);
547 /*@+bufferoverflowhigh@*/
548 isiz = sl_strlen(ftab[j].data_str);
549 if (isiz > 0 && sl_ok_adds(size, isiz))
550 {
551 size += isiz;
552 clist[nn] = ftab[j].data_str;
553 ++nn;
554 }
555 else
556 *q = '%';
557 goto endsrch;
558 }
559 break;
560
561 case S_FMT_LONG:
562 {
563 ftab[j].data_str = (char *) SH_ALLOC(64);
564 /*@-bufferoverflowhigh@*/
565 sprintf (ftab[j].data_str, "%ld", /* known to fit */
566 ftab[j].data_long);
567 /*@+bufferoverflowhigh@*/
568 isiz = sl_strlen(ftab[j].data_str);
569 if (isiz > 0 && sl_ok_adds(size, isiz))
570 {
571 size += isiz;
572 clist[nn] = ftab[j].data_str;
573 ++nn;
574 }
575 else
576 *q = '%';
577 goto endsrch;
578 }
579 break;
580
581 case S_FMT_TIME:
582 {
583 ftab[j].data_str = (char *) SH_ALLOC(64);
584 inpp = (time_t)ftab[j].data_ulong;
585 if (inpp != 0)
586 {
587 time_ptr = localtime (&(inpp));
588 if (time_ptr != NULL)
589 (void) strftime(ftab[j].data_str, 64,
590 _("%d-%m-%Y %H:%M:%S"), time_ptr);
591 else
592 (void) sl_strlcpy(ftab[j].data_str,
593 _("00-00-0000 00:00:00"), 64);
594 }
595 else
596 {
597 (void) sl_strlcpy(ftab[j].data_str,
598 _("(None)"), 64);
599 }
600 isiz = sl_strlen(ftab[j].data_str);
601 if (isiz > 0 && sl_ok_adds(size, isiz))
602 {
603 size += isiz;
604 clist[nn] = ftab[j].data_str;
605 ++nn;
606 }
607 else
608 *q = '%';
609 goto endsrch;
610 }
611 break;
612
613 default:
614 /* do nothing */;
615 }
616
617 }
618 ++j;
619 }
620
621 endsrch:
622
623 p = q;
624
625 /* -- not found -- */
626 if (i == 0)
627 {
628 *q = '%';
629 ++p;
630 }
631
632 }
633
634 /* -- Format string evaluated.
635 clist[] List of strings
636 size Total size of format string + clist[] strings
637 -- */
638
639 /* -- closing '\0' --
640 */
641 if (sl_ok_adds(size, 1))
642 size++;
643 outstr = (char *) SH_ALLOC(size);
644
645 /* -- print it --
646 */
647 (void) sl_snprintf( outstr, size, fmt,
648 clist[0], clist[1], clist[2], clist[3],
649 clist[4], clist[5], clist[6], clist[7],
650 clist[8], clist[9], clist[10], clist[11],
651 clist[12], clist[13], clist[14], clist[15]);
652 outstr[size-1] = '\0';
653
654 /* -- cleanup --
655 */
656 j = 0;
657 while (ftab[j].fchar != '\0') {
658 if (ftab[j].type != S_FMT_STRING && ftab[j].data_str != NULL)
659 SH_FREE(ftab[j].data_str);
660 ++j;
661 }
662 SH_FREE(fmt);
663
664 SL_RETURN(outstr, _("sh_util_formatted"));
665}
666
667/* read a hexchar, return int value (0-15)
668 * can't inline (AIX)
669 */
670int sh_util_hexchar( const char c )
671{
672 /*@+charint@*/
673 if ( c >= '0' && c <= '9' )
674 return c - '0';
675 else if ( c >= 'a' && c <= 'f' )
676 return c - 'a' + 10;
677 else if ( c >= 'A' && c <= 'F' )
678 return c - 'A' + 10;
679 else return -1;
680 /*@-charint@*/
681}
682
683char * sh_util_charhex( unsigned char i , char * i2h)
684{
685 int j, k;
686
687 j = i / 16;
688 k = i - (j*16);
689
690 if (j < 10) i2h[0] = '0'+j;
691 else i2h[0] = 'A'+(j-10);
692
693 if (k < 10) i2h[1] = '0'+k;
694 else i2h[1] = 'A'+(k-10);
695
696 return i2h;
697}
698
699/* read a hexadecimal key, convert to binary
700 */
701int sh_util_hextobinary (char * binary, const char * hex, int bytes)
702{
703 int i = 0, j, k, l = 0;
704 char c;
705
706#define SH_HEXCHAR(x, y) \
707 c = (x); \
708 if ( c >= '0' && c <= '9' ) \
709 y = c - '0'; \
710 else if ( c >= 'a' && c <= 'f' ) \
711 y = c - 'a' + 10; \
712 else if ( c >= 'A' && c <= 'F' ) \
713 y = c - 'A' + 10; \
714 else \
715 SL_RETURN((-1), _("sh_util_hextobinary"))
716
717
718 SL_ENTER(_("sh_util_hextobinary"));
719
720 if (bytes < 2)
721 SL_RETURN((-1), _("sh_util_hextobinary"));
722
723 while (i < (bytes-1))
724 {
725 SH_HEXCHAR(hex[i], k);
726 SH_HEXCHAR(hex[i+1], j);
727
728 binary[l] = (char)(k * 16 + j);
729 ++l; i+= 2;
730 }
731
732 SL_RETURN((0), _("sh_util_hextobinary"));
733}
734
735static void copy_four (unsigned char * dest, UINT32 in)
736{
737 UINT32 i, j;
738 int count;
739
740 SL_ENTER(_("copy_four"));
741 for (count = 0; count < 4; ++count)
742 {
743 i = in / 256;
744 j = in - (i*256);
745 dest[count] = (unsigned char) j;
746 in = i;
747 }
748 SL_RET0(_("copy_four"));
749}
750
751/* compute HMAC-TIGER
752 */
753static char * sh_util_hmac_tiger (char * hexkey,
754 char * text, size_t textlen,
755 char * res, size_t len)
756{
757 static char opad[KEY_BLOCK] = {
758 (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C,
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 };
763 static char ipad[KEY_BLOCK] = {
764 (char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36,
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 };
769 static char zap[KEY_BLOCK] = {
770 (char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00,
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 };
775 char K[KEY_BLOCK];
776 char outer[KEY_BLOCK];
777 char * inner;
778 UINT32 * h1;
779 UINT32 * h2;
780 UINT32 cc[KEY_LEN/4];
781 UINT32 kbuf[KEY_BYT/sizeof(UINT32)];
782 char hashbuf[KEYBUF_SIZE];
783
784 int result;
785 size_t i;
786
787 SL_ENTER(_("sh_util_hmac_tiger"));
788
789 ASSERT((KEY_BLOCK <= (KEY_LEN/2)), _("KEY_BLOCK <= (KEY_LEN/2)"));
790
791 memcpy (K, zap, KEY_BLOCK);
792
793 result = sh_util_hextobinary (K, hexkey, KEY_LEN);
794
795 ASSERT((result >= 0), _("result >= 0"));
796
797 if ((result >= 0) && sl_ok_adds(textlen, KEY_BLOCK))
798 {
799 inner = (char *) SH_ALLOC (textlen + KEY_BLOCK);
800
801 for (i = 0; i < KEY_BLOCK; ++i)
802 {
803 outer[i] = K[i] ^ opad[i];
804 inner[i] = K[i] ^ ipad[i];
805 }
806 for (i = KEY_BLOCK; i < (KEY_BLOCK+textlen); ++i)
807 {
808 inner[i] = text[i - KEY_BLOCK];
809 }
810 }
811 else
812 {
813 sh_error_handle((-1), FIL__, __LINE__, -1, MSG_E_SUBGEN,
814 _("integer overflow"),
815 _("sh_util_hmac_tiger"));
816 (void) sh_tiger_hash (NULL, TIGER_DATA, 0, hashbuf, sizeof(hashbuf));
817 sl_strlcpy(res, hashbuf, len);
818 SL_RETURN(res, _("sh_util_hmac_tiger"));
819 }
820
821 /* now compute the hash
822 */
823 h1 = sh_tiger_hash_uint32 ( outer, TIGER_DATA, KEY_BLOCK,
824 kbuf, KEY_BYT/sizeof(UINT32));
825 for (i = 0; i < (KEY_LEN/8); ++i)
826 copy_four ( (unsigned char *) &(cc[i]), h1[i]);
827
828 h2 = sh_tiger_hash_uint32 ( inner, TIGER_DATA,
829 (unsigned long) KEY_BLOCK+textlen,
830 kbuf, KEY_BYT/sizeof(UINT32));
831 for (i = KEY_LEN/8; i < (KEY_LEN/4); ++i)
832 copy_four ( (unsigned char *) &(cc[i]), h2[i - (KEY_LEN/8)]);
833
834 SH_FREE(inner);
835
836 (void) sh_tiger_hash ((char *) &cc[0],
837 TIGER_DATA,
838 (unsigned long) (KEY_LEN/4 * sizeof(UINT32)),
839 hashbuf, sizeof(hashbuf));
840
841 sl_strlcpy(res, hashbuf, len);
842 SL_RETURN(res, _("sh_util_hmac_tiger"));
843}
844
845static char * sh_util_hash_tiger ( char * hexkey,
846 char * text, size_t textlen,
847 char * res, size_t len)
848{
849 char h2[2*KEY_LEN+1];
850 char hashbuf[KEYBUF_SIZE];
851
852 SL_ENTER(_("sh_util_hash_tiger"));
853
854 (void) sl_strlcpy(h2, hexkey, KEY_LEN+1);
855 (void) sl_strlcat(h2,
856 sh_tiger_hash(text, TIGER_DATA,
857 (unsigned long) textlen,
858 hashbuf, sizeof(hashbuf)),
859 2*KEY_LEN+1
860 );
861
862 (void) sh_tiger_hash(h2, TIGER_DATA, 2*KEY_LEN, hashbuf, sizeof(hashbuf));
863
864 sl_strlcpy(res, hashbuf, len);
865 SL_RETURN(res, _("sh_util_hash_tiger"));
866}
867
868/* --- compute signature on data ---
869 */
870#define TYPE_HMAC 0
871#define TYPE_HASH 1
872
873static int sigtype = TYPE_HMAC;
874
875int sh_util_sigtype (const char * c)
876{
877 SL_ENTER(_("sh_util_sigtype"));
878 if (c == NULL)
879 SL_RETURN( -1, _("sh_util_sigtype"));
880
881 if (0 == strcmp(_("HMAC-TIGER"), c))
882 sigtype = TYPE_HMAC;
883 else if (0 == strcmp(_("HASH-TIGER"), c))
884 sigtype = TYPE_HASH;
885 else
886 SL_RETURN( -1, _("sh_util_sigtype"));
887
888 SL_RETURN( 0, _("sh_util_sigtype"));
889}
890
891char * sh_util_siggen (char * hexkey,
892 char * text, size_t textlen,
893 char * res, size_t len)
894{
895 char * p;
896
897 SL_ENTER(_("sh_util_siggen"));
898 if (sigtype == TYPE_HMAC)
899 p = sh_util_hmac_tiger (hexkey,
900 text, textlen, res, len);
901 else
902 p = sh_util_hash_tiger (hexkey,
903 text, textlen, res, len);
904 SL_RETURN(p, _("sh_util_siggen"));
905}
906
907
908/* a simple compressor
909 */
910size_t sh_util_compress (char * dest, char * src, size_t dest_size)
911{
912 char * add;
913 char * get;
914 size_t count = 0;
915 size_t dest_end;
916
917 SL_ENTER(_("sh_util_compress"));
918
919 if (dest_size == 0)
920 SL_RETURN((0), _("sh_util_compress"));
921
922 if ((dest == NULL) || (src == NULL))
923 SL_RETURN((0), _("sh_util_compress"));
924
925 dest_end = sl_strlen(dest);
926
927 if (dest_end > dest_size)
928 SL_RETURN((0), _("sh_util_compress"));
929
930 add = &dest[dest_end];
931 get = src;
932
933 while (count < (dest_size-dest_end))
934 {
935 if (isalnum((int) *get))
936 {
937 *add = *get;
938 ++add;
939 ++count;
940 }
941 ++get;
942 if (*get == '\0' && (count < (dest_size-dest_end)))
943 /* end of src reached */
944 {
945 *add = *get; /* copy the '\0' */
946 break; /* and stop copying */
947 }
948 }
949
950 dest[dest_size-1] = '\0'; /* paranoia */
951 SL_RETURN((count), _("sh_util_compress")); /* no of chars copied */
952}
953
954
955/* copy the four least significant bytes
956 */
957void sh_util_cpylong (char * dest, const char * src, int len )
958{
959 int i, j;
960 union
961 {
962 long l;
963 char c[sizeof(long)];
964 } u;
965#ifdef WORDS_BIGENDIAN
966 unsigned char swap;
967 unsigned char * ii = (unsigned char *) dest;
968#endif
969
970 SL_ENTER(_("sh_util_cpylong"));
971
972 u.l = 1;
973
974 /* MSB is first
975 */
976 if (sizeof(long)>4 &&/*@+charint@*/(u.c[sizeof(long)-1] == 1)/*@-charint@*/)
977 {
978 j = (int) (sizeof(long)-4);
979 for (i = 0; i < j; ++i) ++src;
980 }
981
982 i = 0;
983
984 while (i < 4)
985 {
986 *dest = (*src);
987 ++dest; ++src;
988 if (i == (len-1)) break;
989 ++i;
990 }
991#ifdef WORDS_BIGENDIAN
992 swap = ii[0]; ii[0] = ii[3]; ii[3] = swap;
993 swap = ii[1]; ii[1] = ii[2]; ii[2] = swap;
994#endif
995 SL_RET0(_("sh_util_cpylong"));
996}
997
998/* This is a maximally equidistributed combined Tausworthe
999 * generator. The sequence is,
1000 *
1001 * x_n = (s1_n ^ s2_n ^ s3_n)
1002 *
1003 * s1_{n+1} = (((s1_n & 4294967294) <<12) ^ (((s1_n <<13) ^ s1_n) >>19))
1004 * s2_{n+1} = (((s2_n & 4294967288) << 4) ^ (((s2_n << 2) ^ s2_n) >>25))
1005 * s3_{n+1} = (((s3_n & 4294967280) <<17) ^ (((s3_n << 3) ^ s3_n) >>11))
1006 *
1007 * computed modulo 2^32. In the three formulas above '^' means
1008 * exclusive-or (C-notation), not exponentiation. Note that the
1009 * algorithm relies on the properties of 32-bit unsigned integers (it
1010 * is formally defined on bit-vectors of length 32).
1011 *
1012 * Stolen from GSL (GNU scientific library) and modified somewhat.
1013 * I am using UINT32, which is guaranteed to be 32 bits. Also made
1014 * sure that the initialization vector is valid.
1015 */
1016
1017
1018/* interval [0, 4294967295]
1019 */
1020static UINT32 taus_get_long (void *vstate)
1021{
1022 UINT32 * state = (UINT32 *) vstate;
1023
1024 /*
1025 if (skey->rngI == BAD)
1026 (void)taus_seed();
1027 */
1028
1029#define TAUSWORTHE(s,a,b,c,d) ((s &c) <<d) ^ (((s <<a) ^s) >>b)
1030 /*@+ignorequals@*/
1031 state[0] = TAUSWORTHE (state[0], 13, 19, 4294967294UL, 12);
1032 state[1] = TAUSWORTHE (state[1], 2, 25, 4294967288UL, 4);
1033 state[2] = TAUSWORTHE (state[2], 3, 11, 4294967280UL, 17);
1034 /*@-ignorequals@*/
1035 return (state[0] ^ state[1] ^ state[2]);
1036}
1037
1038/* Hide the internal state of the PRNG by using its output as
1039 * input for a one-way hash function.
1040 */
1041
1042UINT32 taus_get ()
1043{
1044#define TAUS_SAMPLE 12
1045
1046 UINT32 taus_svec[TAUS_SAMPLE];
1047 UINT32 retval;
1048 UINT32 * res;
1049 UINT32 * res_vec = &(skey->res_vec[0]);
1050 static int res_num = 0;
1051 register int i;
1052 UINT32 kbuf[KEY_BYT/sizeof(UINT32)];
1053
1054 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1055 if (res_num > 0)
1056 {
1057 retval = res_vec[res_num];
1058 res_num = (res_num == 5) ? 0 : (res_num + 1);
1059 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey); /* alternative path */
1060 return retval;
1061 }
1062 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1063
1064 (void)taus_seed();
1065
1066 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1067 for (i = 0; i < (TAUS_SAMPLE/3); ++i)
1068 {
1069 taus_svec[i*3] = taus_get_long (&(skey->rng0[0]));
1070 taus_svec[i*3+1] = taus_get_long (&(skey->rng1[0]));
1071 taus_svec[i*3+2] = taus_get_long (&(skey->rng2[0]));
1072 }
1073 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1074
1075 res = sh_tiger_hash_uint32 ( (char *) &taus_svec[0],
1076 TIGER_DATA,
1077 (unsigned long)(TAUS_SAMPLE * sizeof(UINT32)),
1078 kbuf, KEY_BYT/sizeof(UINT32));
1079
1080 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1081 for (i = 1; i < 6; ++i)
1082 {
1083 res_vec[i] = res[i];
1084 }
1085 retval = res[0];
1086 res_num = 1;
1087 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1088
1089 memset(taus_svec, '\0', TAUS_SAMPLE * sizeof(UINT32));
1090
1091 return retval;
1092}
1093
1094/* interval [0,1)
1095 */
1096double taus_get_double (void *vstate)
1097{
1098 return taus_get_long (vstate) / (4294967296.0 + 1.0) ;
1099}
1100
1101#define LCG(n) ((69069 * n) & 0xffffffffUL)
1102
1103/* TAKE CARE: state[0], state[1], state[2] must be > 2,8,16, respectively
1104 */
1105static void taus_set_from_ulong (void *vstate, unsigned long int s)
1106{
1107 UINT32 *state = (UINT32 *) vstate;
1108
1109 if (s == 0)
1110 s = 1; /* default seed is 1 */
1111
1112 state[0] = (UINT32)(LCG (s) | (UINT32) 0x03);
1113 state[1] = (UINT32)(LCG (state[0]) | (UINT32) 0x09);
1114 state[2] = (UINT32)(LCG (state[1]) | (UINT32) 0x17);
1115
1116 /* 'warm up'
1117 */
1118 (void) taus_get_long (state);
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
1125 return;
1126}
1127
1128static void taus_set_from_state (void *vstate, void *init_state)
1129{
1130 UINT32 *state = (UINT32 *) vstate;
1131 UINT32 *state0 = (UINT32 *) init_state;
1132
1133 state[0] = state0[0] | (UINT32) 0x03;
1134 state[1] = state0[1] | (UINT32) 0x09;
1135 state[2] = state0[2] | (UINT32) 0x17;
1136
1137 return;
1138}
1139
1140
1141int taus_seed ()
1142{
1143 char bufx[9 * sizeof(UINT32) + 1];
1144 int status;
1145 static unsigned long seed_time = 0;
1146 static unsigned long seed_counter = 3000;
1147 unsigned long gtime;
1148
1149 SL_ENTER(_("taus_seed"));
1150
1151 if (skey->rngI == GOOD)
1152 {
1153 ++seed_counter;
1154
1155 if ( ((sh_unix_longtime () - seed_time) < 1800) &&
1156 ( seed_counter < 3000))
1157 SL_RETURN( (0), _("taus_seed"));
1158 }
1159
1160 seed_time = sh_unix_longtime ();
1161 seed_counter = 0;
1162
1163 status = sh_entropy (24, bufx);
1164
1165 if (!SL_ISERROR(status))
1166 {
1167 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1168 memcpy (&skey->rng0[0], &bufx[0], 2*sizeof(UINT32));
1169 memcpy (&skey->rng1[0], &bufx[2*sizeof(UINT32)], 2*sizeof(UINT32));
1170 memcpy (&skey->rng2[0], &bufx[4*sizeof(UINT32)], 2*sizeof(UINT32));
1171 memset (bufx, 0, 9 * sizeof(UINT32) + 1);
1172
1173 skey->rng0[2] = 0;
1174 skey->rng1[2] = 0;
1175 skey->rng2[2] = 0;
1176
1177 taus_set_from_state( &(skey->rng0[0]), &(skey->rng0[0]));
1178 taus_set_from_state( &(skey->rng1[0]), &(skey->rng1[0]));
1179 taus_set_from_state( &(skey->rng2[0]), &(skey->rng2[0]));
1180
1181 skey->rngI = GOOD;
1182 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1183 SL_RETURN( (0), _("taus_seed"));
1184 }
1185
1186 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_ES_ENT,
1187 _("sh_entropy"));
1188
1189 /* emergency backup - unsafe !
1190 */
1191#ifdef HAVE_GETTIMEOFDAY
1192 gtime = sh_unix_notime();
1193#else
1194 gtime = seed_time;
1195#endif
1196
1197 SH_MUTEX_LOCK_UNSAFE(mutex_skey);
1198 taus_set_from_ulong ( &(skey->rng0[0]), LCG (gtime) );
1199 taus_set_from_ulong ( &(skey->rng1[0]), LCG (skey->rng0[0]) );
1200 taus_set_from_ulong ( &(skey->rng2[0]), LCG (skey->rng1[0]) );
1201 skey->rngI = BAD;
1202 SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
1203
1204 SL_RETURN( (-1), _("taus_seed"));
1205}
1206
1207/*@+charint@*/
1208static unsigned char new_key[] = { 0xA7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xA7 };
1209/*@-charint@*/
1210static void copy_four (unsigned char * dest, UINT32 in);
1211
1212int sh_util_set_newkey (const char * new_in)
1213{
1214 size_t i, j = 0;
1215 size_t len;
1216 SL_TICKET fp;
1217 SL_TICKET fout;
1218 char * key;
1219 char * path;
1220 char * outpath = NULL;
1221 unsigned char * image = NULL;
1222 long s = 0;
1223 long ilen = 0;
1224 long ii, k = 0;
1225 UINT32 * h1;
1226 char * new = NULL;
1227
1228 if (0 != sl_is_suid())
1229 {
1230 fprintf(stderr, "%s", _("ERROR: insufficient privilege\n"));
1231 _exit (EXIT_FAILURE);
1232 /*@notreached@*/
1233 return -1; /* braindead MAC OSX compiler needs this */
1234 }
1235
1236 if (new_in == NULL || new_in[0] == '\0')
1237 {
1238 fprintf(stderr, "%s",
1239 _("ERROR: no key given\n Argument must be 'key@path'\n"));
1240 _exit (EXIT_FAILURE);
1241 /*@notreached@*/
1242 return -1;
1243 }
1244
1245 if (NULL == (new = calloc(1,strlen(new_in) + 1)))
1246 goto bail_mem;
1247 sl_strncpy(new, new_in, strlen(new_in) + 1);
1248
1249 key = new;
1250 len = strlen(new);
1251 for (i = 1; i < (len-2); ++i)
1252 {
1253 if (new[i] == '@' && new[i+1] == '/')
1254 {
1255 j = i+1; new[i] = '\0'; break;
1256 }
1257 }
1258 if (j == 0)
1259 {
1260 fprintf(stderr, "%s",
1261 _("ERROR: no path to executable given\n Argument must be 'key@path'\n"));
1262 free(new);
1263 _exit (EXIT_FAILURE);
1264 /*@notreached@*/
1265 return -1;
1266 }
1267 else
1268 path = &new[j];
1269
1270 len = strlen(path) + 1 + 4;
1271 /*@-usedef@*/
1272 if (NULL == (outpath = calloc(1,len)))
1273 goto bail_mem;
1274 /*@-usedef@*/
1275 sl_snprintf (outpath, len, _("%s.out"), path);
1276
1277 fp = sl_open_read(FIL__, __LINE__, path, SL_NOPRIV);
1278 if (SL_ISERROR(fp))
1279 {
1280 fprintf(stderr,
1281 _("ERROR: cannot open %s for read (errnum = %ld)\n"), path, fp);
1282 free(new); free (outpath);
1283 _exit (EXIT_FAILURE);
1284 /*@notreached@*/
1285 return -1;
1286 }
1287
1288 fout = sl_open_write(FIL__, __LINE__, outpath, SL_NOPRIV);
1289 if (SL_ISERROR(fout))
1290 {
1291 fprintf(stderr,
1292 _("ERROR: cannot open %s (errnum = %ld)\n"), outpath, fout);
1293 free(new); free (outpath);
1294 _exit (EXIT_FAILURE);
1295 /*@notreached@*/
1296 return -1;
1297 }
1298
1299
1300 image = calloc(1,4096);
1301 if (!image)
1302 goto bail_mem;
1303 while (0 < (ii = sl_read (fp, &image[s], 4096)))
1304 {
1305 unsigned char * ptr;
1306 ilen += ii;
1307 s += 4096;
1308 ptr = realloc (image, (size_t) (4096 + s));
1309 if (ptr)
1310 image = ptr;
1311 else
1312 { free(image); image = NULL; }
1313 if (!image)
1314 goto bail_mem;
1315 }
1316
1317 printf(_("%ld bytes read\n"), ilen);
1318
1319
1320 for (k = 0; k < (ilen - 8); ++k)
1321 {
1322 if (image[k] == new_key[0] &&
1323 image[k+1] == new_key[1] &&
1324 image[k+2] == new_key[2] &&
1325 image[k+3] == new_key[3] &&
1326 image[k+4] == new_key[4] &&
1327 image[k+5] == new_key[5] &&
1328 image[k+6] == new_key[6] &&
1329 image[k+7] == new_key[7])
1330 {
1331 UINT32 kbuf[KEY_BYT/sizeof(UINT32)];
1332
1333 printf("%s", _("old key found\n"));
1334 h1 = sh_tiger_hash_uint32 (key, TIGER_DATA,
1335 (unsigned long)strlen(key),
1336 kbuf, KEY_BYT/sizeof(UINT32));
1337 copy_four( (unsigned char *) &(image[k]), h1[0]);
1338 copy_four( (unsigned char *) &(image[k+4]), h1[1]);
1339 (void) sl_write (fout, image, ilen);
1340 (void) sl_close (fout);
1341 printf(_("new file %s written\n"), outpath);
1342 free(new); free (outpath); free(image);
1343 _exit (EXIT_SUCCESS);
1344 /*@notreached@*/
1345 return 0;
1346 }
1347 }
1348
1349 fprintf(stderr, "%s",
1350 _("ERROR: old key not found\n"));
1351 free(new); free (outpath); free(image);
1352 _exit (EXIT_FAILURE);
1353 /*@notreached@*/
1354 return -1;
1355
1356
1357 bail_mem:
1358 fprintf(stderr, "%s",
1359 _("ERROR: out of memory\n"));
1360 if (new) free(new);
1361 if (outpath) free (outpath);
1362 if (image) free (image);
1363 _exit (EXIT_FAILURE);
1364 /*@notreached@*/
1365 return -1;
1366}
1367
1368
1369
1370
1371/* A simple en-/decoder, based on Vernam cipher. We use the
1372 * message as salt to hide the key by obtaining a different one-time
1373 * pad each time.
1374 * Should be safe against a listener on the network, but not against someone
1375 * with read access to the binary.
1376 */
1377void sh_util_encode (char * data, char * salt, int mode, char fill)
1378{
1379 static char cc1[17] = N_("0123456789ABCDEF");
1380 char cc[17] = "\0";
1381 register int i, j, j1 = 0, j2 = 0, j3;
1382 char * dez;
1383 char hashbuf[KEYBUF_SIZE];
1384
1385 SL_ENTER(_("sh_util_encode"));
1386
1387 /* init
1388 */
1389 (void) sl_strlcpy( cc, _(cc1), sizeof(cc));
1390
1391 /* max 128 bits keyspace
1392 */
1393 memset (skey->vernam, (int)fill, KEY_LEN+1);
1394
1395 dez = (char *) &(skey->ErrFlag[0]);
1396 sh_util_cpylong (skey->vernam, dez, 4);
1397 dez = (char *) &(skey->ErrFlag[1]);
1398 sh_util_cpylong (&skey->vernam[4], dez, 4);
1399
1400 skey->vernam[KEY_LEN] = '\0';
1401
1402 (void) sl_strlcpy(skey->vernam,
1403 sh_tiger_hash(skey->vernam, TIGER_DATA, KEY_LEN,
1404 hashbuf, sizeof(hashbuf)),
1405 KEY_LEN+1);
1406
1407 (void) sl_strlcpy(skey->vernam,
1408 sh_util_hmac_tiger (skey->vernam, salt, strlen(salt),
1409 hashbuf, sizeof(hashbuf)),
1410 KEY_LEN+1);
1411
1412 (void) sl_strlcpy(skey->vernam,
1413 sh_util_hmac_tiger (skey->vernam, (char*) new_key, 8,
1414 hashbuf, sizeof(hashbuf)),
1415 KEY_LEN+1);
1416
1417 /* The following routine adds/subtracts data[j] and vernam[j] mod 16.
1418 */
1419 j = 0;
1420 while (j < KEY_LEN)
1421 {
1422 for (i = 0; i < 16; ++i)
1423 {
1424 if (cc[i] == data[j]) j1 = i;
1425 if (cc[i] == skey->vernam[j]) j2 = i;
1426 }
1427 if (mode == 0)
1428 {
1429 j3 = j1 + j2;
1430 if (j3 > 15) j3 -= 16;
1431 data[j] = cc[j3];
1432 }
1433 else
1434 {
1435 j3 = j1 - j2;
1436 if (j3 < 0) j3 += 16;
1437 data[j] = cc[j3];
1438 }
1439 ++j;
1440 }
1441 SL_RET0(_("sh_util_encode"));
1442}
1443
1444/* server mode
1445 */
1446int sh_util_setserver (const char * dummy)
1447{
1448 SL_ENTER(_("sh_util_setserver"));
1449
1450 (void) dummy;
1451 sh.flag.isserver = GOOD;
1452 SL_RETURN((0),_("sh_util_setserver"));
1453}
1454
1455
1456int sh_util_setlooptime (const char * str)
1457{
1458 int i = atoi (str);
1459
1460 SL_ENTER(_("sh_util_setlooptime"));
1461
1462 if (i >= 0 && i < INT_MAX) {
1463 sh.looptime = i;
1464 SL_RETURN((0),_("sh_util_setlooptime"));
1465 } else {
1466 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
1467 _("loop time"), str);
1468 SL_RETURN((-1),_("sh_util_setlooptime"));
1469 }
1470}
1471
1472#if defined (SH_WITH_CLIENT) || defined (SH_STANDALONE)
1473int sh_util_setchecksum (const char * str)
1474{
1475 static int reject = 0;
1476
1477 SL_ENTER(_("sh_util_setchecksum"));
1478
1479 if (reject == 1)
1480 SL_RETURN((0), _("sh_util_setchecksum"));
1481 reject = 1;
1482
1483 if (sl_strncmp (str, _("init"), sizeof("init")-1) == 0)
1484 {
1485 sh.flag.checkSum = SH_CHECK_INIT;
1486 }
1487 else if (sl_strncmp (str, _("update"), sizeof("update")-1) == 0)
1488 {
1489 if (S_TRUE == file_is_remote())
1490 {
1491 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
1492 _("checksum testing"), str);
1493 SL_RETURN((-1), _("sh_util_setchecksum"));
1494 }
1495 else
1496 {
1497 sh.flag.checkSum = SH_CHECK_CHECK;
1498 sh.flag.update = S_TRUE;
1499 }
1500 }
1501 else if (sl_strncmp (str, _("check"), sizeof("check")-1) == 0)
1502 {
1503 sh.flag.checkSum = SH_CHECK_CHECK;
1504 }
1505 /*
1506 else if (sl_strncmp (str, _("update"), sizeof("update")-1) == 0)
1507 {
1508 sh.flag.checkSum = SH_CHECK_INIT;
1509 sh.flag.update = S_TRUE;
1510 }
1511 */
1512 else if (sl_strncmp (str, _("none"), sizeof("none")-1) == 0)
1513 {
1514 sh.flag.checkSum = SH_CHECK_NONE;
1515 }
1516 else
1517 {
1518 sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
1519 _("checksum testing"), str);
1520 SL_RETURN((-1), _("sh_util_setchecksum"));
1521 }
1522 SL_RETURN((0), _("sh_util_setchecksum"));
1523}
1524#endif
1525
1526/*@+charint@*/
1527unsigned char TcpFlag[8][PW_LEN+1] = {
1528#if (POS_TF == 1)
1529 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1530#endif
1531 { 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
1532#if (POS_TF == 2)
1533 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1534#endif
1535 { 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
1536#if (POS_TF == 3)
1537 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1538#endif
1539 { 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
1540#if (POS_TF == 4)
1541 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1542#endif
1543 { 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
1544#if (POS_TF == 5)
1545 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1546#endif
1547 { 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
1548#if (POS_TF == 6)
1549 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1550#endif
1551 { 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
1552#if (POS_TF == 7)
1553 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1554#endif
1555 { 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
1556#if (POS_TF == 8)
1557 { 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
1558#endif
1559};
1560/*@-charint@*/
1561
1562/* initialize a key to a random value
1563 * rev 0.8
1564 */
1565int sh_util_keyinit (char * buf, long size)
1566{
1567 UINT32 bufy[6];
1568 int i;
1569 int status = 0;
1570 char * p;
1571 char hashbuf[KEYBUF_SIZE];
1572
1573 SL_ENTER(_("sh_util_keyinit"));
1574
1575 ASSERT((size <= KEY_LEN+1), _("size <= KEY_LEN+1"))
1576
1577 if (size > KEY_LEN+1)
1578 size = KEY_LEN+1;
1579
1580 /* seed / re-seed the PRNG if required
1581 */
1582 status = taus_seed ();
1583
1584 if (status == -1)
1585 sh_error_handle ((-1), FIL__, __LINE__, -1, MSG_ES_KEY1,
1586 _("taus_seed"));
1587
1588 for (i = 0; i < 6; ++i)
1589 bufy[i] = taus_get();
1590
1591 p = sh_tiger_hash ((char *) bufy, TIGER_DATA,
1592 (unsigned long)(6*sizeof(UINT32)),
1593 hashbuf, sizeof(hashbuf));
1594
1595 i = sl_strlcpy(buf, p, (size_t)size);
1596
1597 memset (bufy, 0, 6*sizeof(UINT32));
1598
1599 if ((status == 0) && (!SL_ISERROR(i)) )
1600 SL_RETURN((0),_("sh_util_keyinit"));
1601
1602 if (SL_ISERROR(i))
1603 sh_error_handle ((-1), FIL__, __LINE__, i, MSG_ES_KEY2,
1604 _("sl_strlcpy"));
1605
1606 SL_RETURN((-1),_("sh_util_keyinit"));
1607}
1608
1609#if defined(SH_WITH_CLIENT) || defined(SH_STANDALONE)
1610
1611static unsigned char sh_obscure_index[256];
1612static int sh_obscure_no_check = S_FALSE;
1613
1614int sh_util_valid_utf8 (const unsigned char * str)
1615{
1616 const int sh_val_utf8_1 = 1;
1617 const int sh_val_utf8_2 = 2;
1618 const int sh_val_utf8_3 = 3;
1619 const int sh_val_utf8_4 = 4;
1620
1621 size_t len = strlen((const char *)str);
1622 size_t l = 0;
1623 int typ = 0;
1624 unsigned char c = '\0';
1625 unsigned char c2[2] = { 0x00, 0x00 };
1626 unsigned char c3[3] = { 0x00, 0x00, 0x00 };
1627
1628
1629#define SH_VAL_UTF8_1 ((c != '\0') && ((c & 0x80) == 0x00))
1630#define SH_VAL_UTF8_2 ((c != '\0') && ((c & 0xE0) == 0xC0)) /* 110x xxxx */
1631#define SH_VAL_UTF8_3 ((c != '\0') && ((c & 0xF0) == 0xE0)) /* 1110 xxxx */
1632#define SH_VAL_UTF8_4 ((c != '\0') && ((c & 0xF8) == 0xF0)) /* 1111 0xxx */
1633#define SH_VAL_UTF8_N ((c != '\0') && ((c & 0xC0) == 0x80)) /* 10xx xxxx */
1634#define SH_VAL_BAD ((c == '"') || (c == '\t') || (c == '\b') || \
1635 (c == '\f') || (c == '\n') || \
1636 (c == '\r') || (c == '\v') || iscntrl((int) c) || \
1637 (c != ' ' && !isgraph ((int) c)))
1638
1639 while(l < len)
1640 {
1641 c = str[l];
1642
1643 if (SH_VAL_UTF8_1)
1644 {
1645 if (!(SH_VAL_BAD && (sh_obscure_index[c] != 1)))
1646 {
1647 typ = sh_val_utf8_1;
1648 ++l; continue;
1649 }
1650 else
1651 {
1652 return S_FALSE;
1653 }
1654 }
1655 else if (SH_VAL_UTF8_2)
1656 {
1657 typ = sh_val_utf8_2;
1658 c2[0] = c;
1659 if ((c & 0x3e) != 0x00) /* !(overlong 2-byte seq.) */
1660 {
1661 ++l;
1662 if (l != len) {
1663 c = str[l];
1664 if(SH_VAL_UTF8_N) {
1665 c2[1] = c;
1666 ++l; continue;
1667 }
1668 else {
1669 return S_FALSE;
1670 }
1671 }
1672 else {
1673 return S_FALSE;
1674 }
1675 }
1676 else
1677 {
1678 return S_FALSE; /* overlong 2-byte seq. */
1679 }
1680 }
1681 else if (SH_VAL_UTF8_3)
1682 {
1683 typ = sh_val_utf8_3;
1684 c3[0] = c;
1685 ++l; if (l == len) return S_FALSE; c = str[l];
1686 if(!SH_VAL_UTF8_N) return S_FALSE;
1687 if (((str[l-1] & 0x1F) == 0x00) && ((c & 0x60) == 0x00))
1688 return S_FALSE; /* overlong 3-byte seq. */
1689 c3[1] = c;
1690 ++l; if (l == len) return S_FALSE; c = str[l];
1691 if(!SH_VAL_UTF8_N) return S_FALSE;
1692 c3[2] = c;
1693 ++l; continue;
1694 }
1695 else if (SH_VAL_UTF8_4)
1696 {
1697 typ = sh_val_utf8_4;
1698 ++l; if (l == len) return S_FALSE; c = str[l];
1699 if(!SH_VAL_UTF8_N) return S_FALSE;
1700 if (((str[l-1] & 0x0F) == 0x00) && ((c & 0x70) == 0x00))
1701 return S_FALSE; /* overlong 4-byte seq. */
1702 ++l; if (l == len) return S_FALSE; c = str[l];
1703 if(!SH_VAL_UTF8_N) return S_FALSE;
1704 ++l; if (l == len) return S_FALSE; c = str[l];
1705 if(!SH_VAL_UTF8_N) return S_FALSE;
1706 ++l; continue;
1707 }
1708 return S_FALSE;
1709 }
1710
1711 /* last character is invisible (space or else)
1712 */
1713 if (typ == sh_val_utf8_1)
1714 {
1715 if (c != ' ')
1716 return S_TRUE;
1717 else
1718 return S_FALSE;
1719 }
1720 else if (typ == sh_val_utf8_2)
1721 {
1722 if (c2[0] == 0xC2 && c2[1] == 0xA0) /* nbsp */
1723 return S_FALSE;
1724 else
1725 return S_TRUE;
1726 }
1727 else if (typ == sh_val_utf8_3)
1728 {
1729 if (c3[0] == 0xE2)
1730 {
1731 if (c3[1] == 0x80 && c3[2] >= 0x80 && c3[2] <= 0x8F)
1732 return S_FALSE; /* various spaces, left-to-right, right-to-left */
1733 else if (c3[1] == 0x80 && (c3[2] == 0xA8 || c3[2] == 0xA9 ||
1734 c3[2] == 0xAD || c3[2] == 0xAF))
1735 return S_FALSE; /* line sep, para sep, zw word joiner, nnbsp */
1736 else if (c3[1] == 0x81 && (c3[2] == 0xA0 || c3[2] == 0xA1 ||
1737 c3[2] == 0x9F))
1738 return S_FALSE; /* word joiner, function app, math space */
1739 else
1740 return S_TRUE;
1741 }
1742 else if (c3[0] == 0xE3 && c3[1] == 0x80 && c3[2] == 0x80)
1743 {
1744 return S_FALSE; /* ideographic space */
1745 }
1746 else if (c3[0] == 0xEF && c3[1] == 0xBB && c3[2] == 0xBF)
1747 {
1748 return S_FALSE; /* zwnbsp */
1749 }
1750 else
1751 {
1752 return S_TRUE;
1753 }
1754 }
1755 else
1756 {
1757 return S_TRUE;
1758 }
1759}
1760
1761
1762int sh_util_obscure_ok (const char * str)
1763{
1764 unsigned long i;
1765 char * endptr = NULL;
1766
1767 SL_ENTER(_("sh_util_obscure_ok"));
1768
1769 if (0 == sl_strncmp("all", str, 3))
1770 {
1771 for (i = 0; i < 255; ++i)
1772 {
1773 sh_obscure_index[i] = (unsigned char)1;
1774 }
1775 sh_obscure_no_check = S_TRUE;
1776 SL_RETURN(0, _("sh_util_obscure_ok"));
1777 }
1778
1779 sh_obscure_no_check = S_FALSE;
1780
1781 for (i = 0; i < 255; ++i)
1782 {
1783 sh_obscure_index[i] = (unsigned char)0;
1784 }
1785
1786 i = strtoul (str, &endptr, 0);
1787 if (i > 255)
1788 {
1789 SL_RETURN(-1, _("sh_util_obscure_ok"));
1790 }
1791 sh_obscure_index[i] = (unsigned char)1;
1792 if (*endptr == ',')
1793 ++endptr;
1794
1795 while (*endptr != '\0')
1796 {
1797 i = strtoul (endptr, &endptr, 0);
1798 if (i > 255)
1799 {
1800 SL_RETURN(-1, _("sh_util_obscure_ok"));
1801 }
1802 sh_obscure_index[i] = (unsigned char)1;
1803 if (*endptr == ',')
1804 ++endptr;
1805 }
1806 SL_RETURN(0, _("sh_util_obscure_ok"));
1807}
1808
1809static int sh_obscure_check_utf8 = S_FALSE;
1810
1811int sh_util_obscure_utf8 (const char * c)
1812{
1813 int i;
1814 SL_ENTER(_("sh_util_obscure_utf8"));
1815 i = sh_util_flagval(c, &(sh_obscure_check_utf8));
1816 if (sh_obscure_check_utf8 == S_TRUE)
1817 sh_obscure_no_check = S_FALSE;
1818 SL_RETURN(i, _("sh_util_obscure_utf8"));
1819}
1820
1821
1822int sh_util_obscurename (ShErrLevel level, const char * name_orig, int flag)
1823{
1824 const unsigned char * name = (const unsigned char *) name_orig;
1825 char * safe;
1826 unsigned int i;
1827 size_t len = 0;
1828
1829 SL_ENTER(_("sh_util_obscurename"));
1830
1831 ASSERT_RET((name != NULL), _("name != NULL"), (0))
1832
1833 if (sh_obscure_no_check == S_FALSE)
1834 {
1835 if (sh_obscure_check_utf8 != S_TRUE)
1836 {
1837 /* -- Check name. --
1838 */
1839 while (*name != '\0')
1840 {
1841 if ( (*name) > 0x7F || (*name) == '"' || (*name) == '\t' ||
1842 (*name) == '\b' || (*name) == '\f' ||
1843 (*name) == '\n' || (*name) == '\r' ||
1844 (*name) == '\v' || iscntrl((int) *name) ||
1845 ((*name) != ' ' && !isgraph ((int) *name)) )
1846 {
1847 i = (unsigned char) *name;
1848 if (sh_obscure_index[i] != (unsigned char)1)
1849 {
1850 goto err;
1851 }
1852 }
1853 name++; ++len;
1854 }
1855
1856 /* Check for blank at end of name
1857 */
1858 if ((len > 0) && (name_orig[len-1] == ' '))
1859 {
1860 goto err;
1861 }
1862 }
1863 else
1864 {
1865 if (S_FALSE == sh_util_valid_utf8(name))
1866 {
1867 goto err;
1868 }
1869 SL_RETURN((0),_("sh_util_obscurename"));
1870 }
1871 }
1872
1873 SL_RETURN((0),_("sh_util_obscurename"));
1874
1875 err:
1876
1877 if (flag == S_TRUE)
1878 {
1879 safe = sh_util_safe_name (name_orig);
1880 sh_error_handle (level, FIL__, __LINE__, 0, MSG_FI_OBSC,
1881 safe);
1882 SH_FREE(safe);
1883 }
1884 SL_RETURN((-1),_("sh_util_obscurename"));
1885}
1886
1887#endif
1888
1889/* returns freshly allocated memory, return value should be free'd
1890 */
1891char * sh_util_dirname(const char * fullpath)
1892{
1893 char * retval;
1894 size_t len;
1895 char * tmp;
1896
1897 SL_ENTER(_("sh_util_dirname"));
1898
1899 ASSERT_RET ((fullpath != NULL), _("fullpath != NULL"), (NULL))
1900 ASSERT_RET ((*fullpath == '/'), _("*fullpath == '/'"), (NULL))
1901
1902 retval = sh_util_strdup(fullpath);
1903
1904 tmp = retval;
1905 while (*tmp == '/') ++tmp;
1906
1907 /* (1) only leading slashes -- return exact copy
1908 */
1909 if (*tmp == '\0')
1910 {
1911 SL_RETURN(retval, _("sh_util_dirname"));
1912 }
1913
1914 /* (2) there are non-slash characters, so delete trailing slashes
1915 */
1916 len = sl_strlen (retval); /* retval[len] is terminating '\0' */
1917
1918 while (len > 1 && retval[len-1] == '/') /* delete trailing slash */
1919 {
1920 retval[len-1] = '\0';
1921 --len;
1922 }
1923
1924 /* (3) now delete all non-slash characters up to the preceding slash
1925 */
1926 while (len > 1 && retval[len-1] != '/') {
1927 retval[len-1] = '\0';
1928 --len;
1929 }
1930
1931 /* (4a) only leading slashes left, so return this
1932 */
1933 if (&(retval[len]) == tmp)
1934 {
1935 SL_RETURN(retval, _("sh_util_dirname"));
1936 }
1937
1938 /* (4b) strip trailing slash(es) of parent directory
1939 */
1940 while (len > 1 && retval[len-1] == '/') {
1941 retval[len-1] = '\0';
1942 --len;
1943 }
1944 SL_RETURN(retval, _("sh_util_dirname"));
1945
1946}
1947
1948/* returns freshly allocated memory, return value should be free'd
1949 */
1950char * sh_util_basename(const char * fullpath)
1951{
1952 char * retval = NULL;
1953 const char * tmp;
1954 char * tmp2;
1955 char * c;
1956 size_t len;
1957
1958 SL_ENTER(_("sh_util_basename"));
1959
1960 ASSERT_RET ((fullpath != NULL), _("fullpath != NULL"), (NULL))
1961
1962 tmp = fullpath; while (*tmp == '/') ++tmp;
1963 if (*tmp == '\0')
1964 {
1965 retval = sh_util_strdup(fullpath);
1966 }
1967 else
1968 {
1969 tmp2 = sh_util_strdup(tmp);
1970 len = sl_strlen (tmp2);
1971
1972 while (len > 1 && tmp2[len-1] == '/')
1973 {
1974 tmp2[len-1] = '\0';
1975 --len;
1976 }
1977
1978 if (tmp2) /* for llvm/clang analyzer */
1979 {
1980 c = strrchr(tmp2, '/');
1981 if (c)
1982 {
1983 retval = sh_util_strdup(++c);
1984 SH_FREE(tmp2);
1985 }
1986 else
1987 {
1988 retval = tmp2;
1989 }
1990 }
1991 }
1992
1993 SL_RETURN(retval, _("sh_util_basename"));
1994}
1995
1996#define SH_ESCAPE_SPACE 1
1997#define SH_DONT_ESCAPE_SPACE 0
1998char * sh_util_safe_name_int (const char * name, int escape_space);
1999
2000char * sh_util_safe_name (const char * name)
2001{
2002 return sh_util_safe_name_int (name, SH_ESCAPE_SPACE);
2003}
2004
2005char * sh_util_safe_name_keepspace (const char * name)
2006{
2007 return sh_util_safe_name_int (name, SH_DONT_ESCAPE_SPACE);
2008}
2009
2010/* returns freshly allocated memory, return value should be free'd
2011 */
2012char * sh_util_safe_name_int (const char * name, int escape_space)
2013{
2014 register int i = 0;
2015 const char * p;
2016 char * retval;
2017 char oct[32];
2018 char format[16];
2019 size_t len;
2020
2021 SL_ENTER(_("sh_util_safe_name"));
2022
2023 if (name == NULL)
2024 {
2025 /* return an allocated array
2026 */
2027 retval = SH_ALLOC(7);
2028 (void) sl_strlcpy(retval, _("(null)"), 7);
2029 SL_RETURN(retval, _("sh_util_safe_name"));
2030 }
2031
2032 /*
2033 ASSERT_RET ((name != NULL), _("name != NULL"), _("NULL"))
2034 */
2035
2036 len = sl_strlen(name);
2037 p = name;
2038
2039#ifdef SH_USE_XML
2040 if (sl_ok_muls (6, len) && sl_ok_adds ((6*len), 2))
2041 { retval = SH_ALLOC(6 * len + 2); }
2042 else
2043 {
2044 /* return an allocated array
2045 */
2046 retval = SH_ALLOC(11);
2047 (void) sl_strlcpy(retval, _("(overflow)"), 11);
2048 SL_RETURN(retval, _("sh_util_safe_name"));
2049 }
2050#else
2051 if (sl_ok_muls (4, len) && sl_ok_adds ((4*len), 2))
2052 { retval = SH_ALLOC(4 * len + 2); }
2053 else
2054 {
2055 /* return an allocated array
2056 */
2057 retval = SH_ALLOC(11);
2058 (void) sl_strlcpy(retval, _("(overflow)"), 11);
2059 SL_RETURN(retval, _("sh_util_safe_name"));
2060 }
2061#endif
2062
2063 (void) sl_strncpy(format, _("%c%03o"), 16);
2064
2065 while (*p != '\0') {
2066 /* Most frequent cases first
2067 */
2068 if ( ((*p) >= 'a' && (*p) <= 'z') || ((*p) == '/') || ((*p) == '.') ||
2069 ((*p) >= '0' && (*p) <= '9') ||
2070 ((*p) >= 'A' && (*p) <= 'Z')) {
2071 retval[i] = *p;
2072 } else if ( (*p) == '\\') { /* backslash */
2073 retval[i] = '\\'; ++i;
2074 retval[i] = '\\';
2075 } else if ( (*p) == '\n') { /* newline */
2076 retval[i] = '\\'; ++i;
2077 retval[i] = 'n';
2078 } else if ( (*p) == '\b') { /* backspace */
2079 retval[i] = '\\'; ++i;
2080 retval[i] = 'b';
2081 } else if ( (*p) == '\r') { /* carriage return */
2082 retval[i] = '\\'; ++i;
2083 retval[i] = 'r';
2084 } else if ( (*p) == '\t') { /* horizontal tab */
2085 retval[i] = '\\'; ++i;
2086 retval[i] = 't';
2087 } else if ( (*p) == '\v') { /* vertical tab */
2088 retval[i] = '\\'; ++i;
2089 retval[i] = 'v';
2090 } else if ( (*p) == '\f') { /* form-feed */
2091 retval[i] = '\\'; ++i;
2092 retval[i] = 'f';
2093#ifdef WITH_DATABASE
2094 } else if ( (*p) == '\'') { /* single quote */
2095 retval[i] = '\\'; ++i;
2096 retval[i] = '\'';
2097#endif
2098 } else if ( (*p) == ' ') { /* space */
2099 if (escape_space) {
2100 retval[i] = '\\'; ++i;
2101 retval[i] = ' ';
2102 }
2103 else {
2104 retval[i] = *p;
2105 }
2106#ifdef SH_USE_XML
2107 } else if ( (*p) == '"') { /* double quote */
2108 retval[i] = '&'; ++i;
2109 retval[i] = 'q'; ++i;
2110 retval[i] = 'u'; ++i;
2111 retval[i] = 'o'; ++i;
2112 retval[i] = 't'; ++i;
2113 retval[i] = ';';
2114 } else if ( (*p) == '&') { /* ampersand */
2115 retval[i] = '&'; ++i;
2116 retval[i] = 'a'; ++i;
2117 retval[i] = 'm'; ++i;
2118 retval[i] = 'p'; ++i;
2119 retval[i] = ';';
2120 } else if ( (*p) == '<') { /* left angle */
2121 retval[i] = '&'; ++i;
2122 retval[i] = 'l'; ++i;
2123 retval[i] = 't'; ++i;
2124 retval[i] = ';';
2125 } else if ( (*p) == '>') { /* right angle */
2126 retval[i] = '&'; ++i;
2127 retval[i] = 'g'; ++i;
2128 retval[i] = 't'; ++i;
2129 retval[i] = ';';
2130#else
2131 } else if ( (*p) == '"') { /* double quote */
2132 retval[i] = '\\'; ++i;
2133 retval[i] = '\"';
2134#endif
2135 } else if (!isgraph ((int) *p)) { /* not printable */
2136 /*@-bufferoverflowhigh -formatconst@*/
2137 /* flawfinder: ignore */
2138 sprintf(oct, format, '\\', /* known to fit */
2139 (unsigned char) *p);
2140 /*@+bufferoverflowhigh +formatconst@*/
2141 retval[i] = oct[0]; ++i;
2142 retval[i] = oct[1]; ++i;
2143 retval[i] = oct[2]; ++i;
2144 retval[i] = oct[3];
2145 } else {
2146 retval[i] = *p;
2147 }
2148 ++p;
2149 ++i;
2150 }
2151 retval[i] = '\0';
2152 SL_RETURN(retval, _("sh_util_safe_name"));
2153}
2154
2155int sh_util_isnum (const char *str)
2156{
2157 const char *p = str;
2158
2159 SL_ENTER(_("sh_util_isnum"));
2160
2161 ASSERT_RET ((str != NULL), _("str != NULL"), (-1))
2162
2163 while (p) {
2164 if (!isdigit((int) *p) )
2165 SL_RETURN((-1), _("sh_util_isnum"));
2166 ++p;
2167 }
2168 SL_RETURN((0), _("sh_util_isnum"));
2169}
2170
2171char * sh_util_strconcat (const char * arg1, ...)
2172{
2173 size_t length, l2;
2174 char * s;
2175 char * strnew;
2176 va_list vl;
2177
2178 SL_ENTER(_("sh_util_strconcat"));
2179
2180 ASSERT_RET ((arg1 != NULL), _("arg1 != NULL"), (NULL))
2181
2182 length = sl_strlen (arg1) + 1;
2183
2184 va_start (vl, arg1);
2185 s = va_arg (vl, char * );
2186 while (s != NULL)
2187 {
2188 l2 = sl_strlen (s);
2189 if (sl_ok_adds(length, l2))
2190 length += l2;
2191 else
2192 SL_RETURN(NULL, _("sh_util_strconcat"));
2193 s = va_arg (vl, char * );
2194 }
2195 va_end (vl);
2196
2197 if (sl_ok_adds(length, 2))
2198 strnew = SH_ALLOC( length + 2 );
2199 else
2200 SL_RETURN(NULL, _("sh_util_strconcat"));
2201
2202 strnew[0] = '\0';
2203
2204 (void) sl_strlcpy (strnew, arg1, length + 2);
2205
2206 va_start (vl, arg1);
2207 s = va_arg (vl, char * );
2208 while (s)
2209 {
2210 (void) sl_strlcat (strnew, s, length + 2);
2211 s = va_arg (vl, char * );
2212 }
2213 va_end (vl);
2214
2215 SL_RETURN(strnew, _("sh_util_strconcat"));
2216}
2217
2218static const char bto64_0[] = N_("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789()");
2219static char bto64[65] = { '\0' };
2220
2221
2222size_t sh_util_base64_enc (unsigned char * out,
2223 const unsigned char * instr,
2224 size_t lin)
2225{
2226 int ll;
2227 unsigned char a, b, c;
2228 size_t len = 0;
2229 size_t j = 0;
2230
2231 start:
2232 if (bto64[0] != '\0')
2233 {
2234 if (instr /* && *instr *//* need to handle binary data */)
2235 {
2236 if (lin == 0)
2237 lin = strlen((const char *)instr);
2238
2239 if (lin > 0)
2240 {
2241 do {
2242 ll = 0;
2243
2244 if (len < lin)
2245 { a = *instr; ++instr; ++len; ++ll; }
2246 else
2247 { a = 0; }
2248 if (len < lin)
2249 { b = *instr; ++instr; ++len; ++ll; }
2250 else
2251 { b = 0; }
2252 if (len < lin)
2253 { c = *instr; ++instr; ++len; ++ll; }
2254 else
2255 { c = 0; }
2256
2257 *out = bto64[ a >> 2 ];
2258 ++j; ++out;
2259 *out = bto64[ ((a & 0x03) << 4) | ((b & 0xf0) >> 4) ];
2260 ++j; ++out;
2261 *out = (unsigned char) (ll > 1 ? bto64[ ((b & 0x0f) << 2) | ((c & 0xc0) >> 6) ] : '?');
2262 ++j; ++out;
2263 *out = (unsigned char) (ll > 2 ? bto64[ c & 0x3f ] : '?');
2264 ++j; ++out;
2265 } while (len < lin);
2266 }
2267 }
2268 *out = '\0';
2269 return j;
2270 }
2271
2272 memcpy(bto64, _(bto64_0), 65);
2273 goto start;
2274}
2275
2276size_t sh_util_base64_enc_alloc (char **out, const char *in, size_t inlen)
2277{
2278 size_t outlen = SH_B64_SIZ(inlen);
2279
2280 if (inlen > outlen) /* overflow */
2281 {
2282 *out = NULL;
2283 return 0;
2284 }
2285
2286 *out = SH_ALLOC(outlen);
2287 return sh_util_base64_enc((unsigned char *)*out, (const unsigned char *)in, inlen);
2288}
2289
2290size_t sh_util_base64_dec (unsigned char *out,
2291 const unsigned char *in,
2292 size_t lin)
2293{
2294 size_t i;
2295 unsigned char c;
2296 unsigned char b;
2297 size_t lout = 0;
2298 unsigned int w = 0;
2299
2300 if (out && in)
2301 {
2302 if (lin == 0)
2303 lin = strlen((const char *)in);
2304
2305 for (i = 0; i < lin; i++)
2306 {
2307 c = *in; ++in;
2308 b = 0;
2309
2310 if ((c >= 'A') && (c <= 'Z'))
2311 {
2312 b = (c - 'A');
2313 }
2314 else if ((c >= 'a') && (c <= 'z'))
2315 {
2316 b = (c - 'a' + 26);
2317 }
2318 else if ((c >= '0') && (c <= '9'))
2319 {
2320 b = (c - '0' + 52);
2321 }
2322 else if (c == '(' || c == '+')
2323 {
2324 b = 62;
2325 }
2326 else if (c == ')' || c == '/')
2327 {
2328 b = 63;
2329 }
2330 else if (c == '?' || c == '=')
2331 {
2332 /* last byte was written to, but will now get
2333 * truncated
2334 */
2335 if (lout > 0) --lout;
2336 break;
2337 }
2338
2339 if (w == 0)
2340 {
2341 *out = (b << 2) & 0xfc;
2342 ++lout;
2343 }
2344 else if (w == 1)
2345 {
2346 *out |= (b >> 4) & 0x03;
2347 ++out;
2348 *out = (b << 4) & 0xf0;
2349 ++lout;
2350 }
2351 else if (w == 2)
2352 {
2353 *out |= (b >> 2) & 0x0f;
2354 ++out;
2355 *out = (b << 6) & 0xc0;
2356 ++lout;
2357 }
2358 else if (w == 3)
2359 {
2360 *out |= b & 0x3f;
2361 ++out;
2362 }
2363
2364 ++w;
2365
2366 if (w == 4)
2367 {
2368 w = 0;
2369 }
2370 }
2371 *out = '\0';
2372 }
2373 return lout;
2374}
2375
2376size_t sh_util_base64_dec_alloc (unsigned char **out, const unsigned char *in,
2377 size_t lin)
2378{
2379 size_t lout = 3 * (lin / 4) + 2;
2380
2381 *out = SH_ALLOC(lout);
2382
2383 return sh_util_base64_dec (*out, in, lin);
2384}
2385
2386
2387#ifdef HAVE_REGEX_H
2388
2389#include <regex.h>
2390
2391int sh_util_regcmp (char * regex_str, char * in_str)
2392{
2393#if defined(REG_ESPACE)
2394 int status = REG_ESPACE;
2395#else
2396 int status = -1;
2397#endif
2398 regex_t preg;
2399 char * errbuf;
2400
2401 SL_ENTER(_("sh_util_regcmp"));
2402
2403 status = regcomp(&preg, regex_str, REG_NOSUB|REG_EXTENDED);
2404
2405 if (status == 0)
2406 {
2407 if ((status = regexec(&preg, in_str, 0, NULL, 0)) == 0)
2408 {
2409 regfree (&preg);
2410 SL_RETURN((0), _("sh_util_regcmp"));
2411 }
2412 }
2413
2414 if (status != 0 && status != REG_NOMATCH)
2415 {
2416 errbuf = SH_ALLOC(BUFSIZ);
2417 (void) regerror(status, &preg, errbuf, BUFSIZ);
2418 errbuf[BUFSIZ-1] = '\0';
2419 sh_error_handle ((-1), FIL__, __LINE__, status, MSG_E_REGEX,
2420 errbuf, regex_str);
2421 SH_FREE(errbuf);
2422 }
2423
2424 regfree (&preg);
2425 SL_RETURN((-1), _("sh_util_regcmp"));
2426}
2427
2428#endif
2429
2430
2431
2432
2433
2434
2435
2436
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