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source: trunk/src/sh_utils.c@ 456

Last change on this file since 456 was 454, checked in by katerina, 10 years ago
Fix for ticket #355 (use calloc instead of malloc).
File size: 54.4 KB

Rev	Line
[1]	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"
[137]	47	#include "sh_pthread.h"
[1]	48
	49	#undef FIL__
	50	#define FIL__ _("sh_utils.c")
	51
	52	UINT32 ErrFlag[2];
	53
[20]	54	int sh_util_flagval(const char * c, int * fval)
[1]	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
	74	int 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
	102	static int sh_ask_update = S_FALSE;
	103
[20]	104	int sh_util_set_interactive(const char * str)
[1]	105	{
[20]	106	(void) str;
[1]	107
[20]	108	sh_ask_update = S_TRUE;
[1]	109	sh_unix_setnodeamon(NULL);
	110
	111	return 0;
	112	}
	113
[355]	114	static char * sh_update_file = NULL;
	115
	116	int 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
[1]	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
[355]	153	/* Returns S_FALSE if no update desired
	154	*/
	155	int 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	*/
[305]	202	int sh_util_ask_update(const char * path)
[1]	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
[355]	215	if (sh_update_file)
	216	{
	217	i = sh_util_update_checkfile(path);
	218	SL_RETURN(i, _("sh_util_ask_update"));
	219	}
	220
[1]	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	{
[210]	269	fprintf(stderr, "%s", _("Please answer y(es) or n(o)\n"));
[1]	270	}
	271	/@-charintliteral@/
	272	}
	273	}
	274
	275	SL_RETURN(i, _("sh_util_ask_update"));
	276	}
	277
[22]	278	int sh_util_hidesetup(const char * c)
[1]	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	}
[68]	286
	287	char * 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;
	312	while (p[1] == '\n') ++p; /* scan over consecutive newlines */
	313	state = 0;
	314	if (p[1] == '\0') {
	315	if (rem > 0) out[rem-1] = '\0';
	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;
[382]	331	p += 3;
[68]	332	} else if (0 == strncmp((char *) p, "group", 5)) {
	333	out[rem] = 'g'; ++rem;
[382]	334	p += 4;
[68]	335	} else if (0 == strncmp((char *) p, "mask", 4)) {
	336	out[rem] = 'm'; ++rem;
[382]	337	p += 3;
[68]	338	} else if (0 == strncmp((char *) p, "other", 5)) {
	339	out[rem] = 'o';
[382]	340	p += 4; ++rem;
[68]	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	}
[76]	357
	358
	359	char * 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
[382]	368	if (str && sl_ok_adds (len, 1))
[76]	369	{
	370	p = SH_ALLOC (len + 1);
[167]	371	(void) memcpy (p, str, len+1);
[76]	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
[1]	380	char * sh_util_strdup (const char * str)
	381	{
	382	char * p = NULL;
	383	size_t len;
	384
	385	SL_ENTER(_("sh_util_strdup"));
	386
[25]	387	SH_VALIDATE_NE(str, NULL);
	388
[382]	389	if (str)
	390	{
	391	len = sl_strlen(str);
	392	p = SH_ALLOC (len + 1);
	393	(void) memcpy (p, str, len+1);
	394	}
[1]	395	SL_RETURN( p, _("sh_util_strdup"));
	396	}
	397
[382]	398	char * 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
[1]	416	/* by the eircom.net computer incident
	417	* response team
	418	*/
	419	char * sh_util_strsep (char *str, const char delim)
	420	{
[170]	421	char ret, c;
	422	const char *d;
[1]	423
	424	SL_ENTER(_("sh_util_strsep"));
	425	ret = *str;
	426
[25]	427	SH_VALIDATE_NE(ret, NULL);
[1]	428
[382]	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	}
[1]	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
[13]	448	/* returned string must be free'd by caller.
[1]	449	*/
	450	char * 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
[13]	463	char * clist[16] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	464	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL };
[1]	465	int nn = 0;
	466
	467	SL_ENTER(_("sh_util_formatted"));
	468
[13]	469	if (formatt == NULL \|\| ftab == NULL \|\| *formatt == '\0')
[1]	470	SL_RETURN(NULL, _("sh_util_formatted"));
	471
	472	/* -- save the format (we overwrite it !!) --
	473	*/
	474	size = sl_strlen(formatt);
	475
[34]	476	if (!sl_ok_adds(size, 1))
	477	SL_RETURN(NULL, _("sh_util_formatted"));
[13]	478
[34]	479	++size;
	480	fmt = SH_ALLOC(size);
	481	(void) sl_strlcpy(fmt, formatt, size);
	482
[1]	483	p = fmt;
	484
	485	j = 0;
[13]	486	while (ftab[j].fchar != '\0') {
	487	if (ftab[j].type != S_FMT_STRING)
	488	ftab[j].data_str = NULL;
	489	++j;
	490	}
	491
[1]	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
[13]	524	switch(ftab[j].type) {
	525
	526	case S_FMT_STRING:
[1]	527	{
	528	isiz = sl_strlen(ftab[j].data_str);
[34]	529	if (isiz > 0 && sl_ok_adds(size, isiz))
[1]	530	{
	531	size += isiz;
	532	clist[nn] = ftab[j].data_str;
	533	++nn;
	534	}
	535	else
	536	*q = '%';
[13]	537	goto endsrch;
[1]	538	}
[13]	539	break;
	540
	541	case S_FMT_ULONG:
[1]	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);
[34]	549	if (isiz > 0 && sl_ok_adds(size, isiz))
[1]	550	{
	551	size += isiz;
	552	clist[nn] = ftab[j].data_str;
	553	++nn;
	554	}
	555	else
	556	*q = '%';
[13]	557	goto endsrch;
[1]	558	}
[13]	559	break;
	560
	561	case S_FMT_LONG:
[1]	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);
[34]	569	if (isiz > 0 && sl_ok_adds(size, isiz))
[1]	570	{
	571	size += isiz;
	572	clist[nn] = ftab[j].data_str;
	573	++nn;
	574	}
	575	else
	576	*q = '%';
[13]	577	goto endsrch;
[1]	578	}
[13]	579	break;
	580
	581	case S_FMT_TIME:
[1]	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);
[34]	601	if (isiz > 0 && sl_ok_adds(size, isiz))
[1]	602	{
	603	size += isiz;
	604	clist[nn] = ftab[j].data_str;
	605	++nn;
	606	}
	607	else
	608	*q = '%';
[13]	609	goto endsrch;
[1]	610	}
[13]	611	break;
[1]	612
[13]	613	default:
	614	/* do nothing */;
	615	}
	616
[1]	617	}
[13]	618	++j;
[1]	619	}
	620
[13]	621	endsrch:
	622
	623	p = q;
	624
[1]	625	/* -- not found -- */
	626	if (i == 0)
	627	{
	628	*q = '%';
	629	++p;
	630	}
[13]	631
[1]	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	*/
[34]	641	if (sl_ok_adds(size, 1))
	642	size++;
[1]	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]);
[34]	652	outstr[size-1] = '\0';
	653
[1]	654	/* -- cleanup --
	655	*/
	656	j = 0;
[13]	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	}
[1]	662	SH_FREE(fmt);
	663
	664	SL_RETURN(outstr, _("sh_util_formatted"));
	665	}
	666
[93]	667	/* read a hexchar, return int value (0-15)
	668	* can't inline (AIX)
[1]	669	*/
[12]	670	int sh_util_hexchar( const char c )
[1]	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
[137]	683	char * sh_util_charhex( unsigned char i , char * i2h)
[93]	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
[1]	699	/* read a hexadecimal key, convert to binary
	700	*/
[12]	701	int sh_util_hextobinary (char * binary, const char * hex, int bytes)
[1]	702	{
	703	int i = 0, j, k, l = 0;
[13]	704	char c;
[1]	705
[13]	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
[1]	718	SL_ENTER(_("sh_util_hextobinary"));
	719
[34]	720	if (bytes < 2)
	721	SL_RETURN((-1), _("sh_util_hextobinary"));
	722
	723	while (i < (bytes-1))
[1]	724	{
[13]	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;
[1]	730	}
	731
	732	SL_RETURN((0), _("sh_util_hextobinary"));
	733	}
	734
	735	static 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	*/
	753	static char * sh_util_hmac_tiger (char * hexkey,
[133]	754	char * text, size_t textlen,
	755	char * res, size_t len)
[1]	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	};
[11]	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	};
[1]	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];
[133]	781	UINT32 kbuf[KEY_BYT/sizeof(UINT32)];
	782	char hashbuf[KEYBUF_SIZE];
[1]	783
[133]	784
[1]	785	size_t i;
	786
	787	SL_ENTER(_("sh_util_hmac_tiger"));
	788	ASSERT((KEY_BLOCK <= (KEY_LEN/2)), _("KEY_BLOCK <= (KEY_LEN/2)"))
	789
	790	if (KEY_BLOCK > (KEY_LEN/2))
	791	{
[137]	792	(void) sh_tiger_hash (NULL, TIGER_DATA, 0, hashbuf, sizeof(hashbuf));
	793	sl_strlcpy(res, hashbuf, len);
[1]	794	SL_RETURN(res, _("sh_util_hmac_tiger"));
	795	}
	796
[11]	797	memcpy (K, zap, KEY_BLOCK);
[1]	798
	799	if (sh_util_hextobinary (K, hexkey, KEY_LEN) < 0)
	800	{
[137]	801	(void) sh_tiger_hash (NULL, TIGER_DATA, 0, hashbuf, sizeof(hashbuf));
	802	sl_strlcpy(res, hashbuf, len);
[1]	803	SL_RETURN(res, _("sh_util_hmac_tiger"));
	804	}
	805
[34]	806	if (sl_ok_adds(textlen, KEY_BLOCK))
	807	{
	808	inner = (char *) SH_ALLOC (textlen + KEY_BLOCK);
[1]	809
[34]	810	for (i = 0; i < KEY_BLOCK; ++i)
	811	{
	812	outer[i] = K[i] ^ opad[i];
	813	inner[i] = K[i] ^ ipad[i];
	814	}
	815	for (i = KEY_BLOCK; i < (KEY_BLOCK+textlen); ++i)
	816	{
	817	inner[i] = text[i - KEY_BLOCK];
	818	}
[1]	819	}
[34]	820	else
[1]	821	{
[34]	822	sh_error_handle((-1), FIL__, __LINE__, -1, MSG_E_SUBGEN,
	823	_("integer overflow"),
	824	_("sh_util_hmac_tiger"));
[137]	825	(void) sh_tiger_hash (NULL, TIGER_DATA, 0, hashbuf, sizeof(hashbuf));
	826	sl_strlcpy(res, hashbuf, len);
[34]	827	SL_RETURN(res, _("sh_util_hmac_tiger"));
[1]	828	}
	829
	830	/* now compute the hash
	831	*/
	832	h1 = sh_tiger_hash_uint32 ( outer,
	833	TIGER_DATA,
[133]	834	KEY_BLOCK,
	835	kbuf, KEY_BYT/sizeof(UINT32));
[1]	836	for (i = 0; i < (KEY_LEN/8); ++i)
	837	{
	838	/* cc[i] = h1[i]; */
	839	copy_four ( (unsigned char *) &(cc[i]), h1[i]);
	840	}
	841
	842	h2 = sh_tiger_hash_uint32 ( inner,
	843	TIGER_DATA,
[133]	844	(unsigned long) KEY_BLOCK+textlen,
	845	kbuf, KEY_BYT/sizeof(UINT32));
[1]	846	for (i = KEY_LEN/8; i < (KEY_LEN/4); ++i)
	847	{
	848	copy_four ( (unsigned char *) &(cc[i]), h2[i - (KEY_LEN/8)]);
	849	/* cc[i] = h2[i - (KEY_LEN/8)]; */
	850	}
	851	SH_FREE(inner);
	852
[133]	853	(void) sh_tiger_hash ((char *) &cc[0],
	854	TIGER_DATA,
	855	(unsigned long) (KEY_LEN/4 * sizeof(UINT32)),
	856	hashbuf, sizeof(hashbuf));
[1]	857
[133]	858	sl_strlcpy(res, hashbuf, len);
[1]	859	SL_RETURN(res, _("sh_util_hmac_tiger"));
	860	}
	861
	862	static char * sh_util_hash_tiger ( char * hexkey,
[137]	863	char * text, size_t textlen,
[133]	864	char * res, size_t len)
[1]	865	{
	866	char h2[2*KEY_LEN+1];
[137]	867	char hashbuf[KEYBUF_SIZE];
	868
[1]	869	SL_ENTER(_("sh_util_hash_tiger"));
	870
	871	(void) sl_strlcpy(h2, hexkey, KEY_LEN+1);
[133]	872	(void) sl_strlcat(h2,
	873	sh_tiger_hash(text, TIGER_DATA,
	874	(unsigned long) textlen,
	875	hashbuf, sizeof(hashbuf)),
[137]	876	2*KEY_LEN+1
[133]	877	);
[1]	878
[133]	879	(void) sh_tiger_hash(h2, TIGER_DATA, 2*KEY_LEN, hashbuf, sizeof(hashbuf));
[1]	880
[133]	881	sl_strlcpy(res, hashbuf, len);
[1]	882	SL_RETURN(res, _("sh_util_hash_tiger"));
	883	}
	884
	885	/* --- compute signature on data ---
	886	*/
	887	#define TYPE_HMAC 0
	888	#define TYPE_HASH 1
	889
	890	static int sigtype = TYPE_HMAC;
	891
[22]	892	int sh_util_sigtype (const char * c)
[1]	893	{
	894	SL_ENTER(_("sh_util_sigtype"));
	895	if (c == NULL)
	896	SL_RETURN( -1, _("sh_util_sigtype"));
	897
	898	if (0 == strcmp(_("HMAC-TIGER"), c))
	899	sigtype = TYPE_HMAC;
	900	else if (0 == strcmp(_("HASH-TIGER"), c))
	901	sigtype = TYPE_HASH;
	902	else
	903	SL_RETURN( -1, _("sh_util_sigtype"));
	904
	905	SL_RETURN( 0, _("sh_util_sigtype"));
	906	}
	907
	908	char * sh_util_siggen (char * hexkey,
[133]	909	char * text, size_t textlen,
	910	char * res, size_t len)
[1]	911	{
	912	char * p;
	913
	914	SL_ENTER(_("sh_util_siggen"));
	915	if (sigtype == TYPE_HMAC)
	916	p = sh_util_hmac_tiger (hexkey,
[133]	917	text, textlen, res, len);
[1]	918	else
	919	p = sh_util_hash_tiger (hexkey,
[133]	920	text, textlen, res, len);
[1]	921	SL_RETURN(p, _("sh_util_siggen"));
	922	}
	923
	924
	925	/* a simple compressor
	926	*/
[214]	927	size_t sh_util_compress (char * dest, char * src, size_t dest_size)
[1]	928	{
	929	char * add;
	930	char * get;
	931	size_t count = 0;
	932	size_t dest_end;
	933
	934	SL_ENTER(_("sh_util_compress"));
	935
	936	if (dest_size == 0)
	937	SL_RETURN((0), _("sh_util_compress"));
	938
	939	if ((dest == NULL) \|\| (src == NULL))
	940	SL_RETURN((0), _("sh_util_compress"));
	941
	942	dest_end = sl_strlen(dest);
	943
	944	if (dest_end > dest_size)
	945	SL_RETURN((0), _("sh_util_compress"));
	946
	947	add = &dest[dest_end];
	948	get = src;
	949
	950	while (count < (dest_size-dest_end))
	951	{
	952	if (isalnum((int) *get))
	953	{
	954	add = get;
	955	++add;
	956	++count;
	957	}
	958	++get;
	959	if (*get == '\0' && (count < (dest_size-dest_end)))
	960	/* end of src reached */
	961	{
	962	add = get; /* copy the '\0' */
	963	break; /* and stop copying */
	964	}
	965	}
	966
	967	dest[dest_size-1] = '\0'; /* paranoia */
[214]	968	SL_RETURN((count), _("sh_util_compress")); /* no of chars copied */
[1]	969	}
	970
	971
	972	/* copy the four least significant bytes
	973	*/
	974	void sh_util_cpylong (char * dest, const char * src, int len )
	975	{
	976	int i, j;
	977	union
	978	{
	979	long l;
	980	char c[sizeof(long)];
	981	} u;
[290]	982	#ifdef WORDS_BIGENDIAN
	983	unsigned char swap;
	984	unsigned char * ii = (unsigned char *) dest;
	985	#endif
[1]	986
	987	SL_ENTER(_("sh_util_cpylong"));
	988
	989	u.l = 1;
	990
	991	/* MSB is first
	992	*/
	993	if (sizeof(long)>4 &&/@+charint@/(u.c[sizeof(long)-1] == 1)/@-charint@/)
	994	{
	995	j = (int) (sizeof(long)-4);
	996	for (i = 0; i < j; ++i) ++src;
	997	}
	998
	999	i = 0;
	1000
	1001	while (i < 4)
	1002	{
	1003	dest = (src);
	1004	++dest; ++src;
	1005	if (i == (len-1)) break;
	1006	++i;
	1007	}
[290]	1008	#ifdef WORDS_BIGENDIAN
	1009	swap = ii[0]; ii[0] = ii[3]; ii[3] = swap;
	1010	swap = ii[1]; ii[1] = ii[2]; ii[2] = swap;
	1011	#endif
[1]	1012	SL_RET0(_("sh_util_cpylong"));
	1013	}
	1014
	1015	/* This is a maximally equidistributed combined Tausworthe
	1016	* generator. The sequence is,
	1017	*
	1018	* x_n = (s1_n ^ s2_n ^ s3_n)
	1019	*
	1020	* s1_{n+1} = (((s1_n & 4294967294) <<12) ^ (((s1_n <<13) ^ s1_n) >>19))
	1021	* s2_{n+1} = (((s2_n & 4294967288) << 4) ^ (((s2_n << 2) ^ s2_n) >>25))
	1022	* s3_{n+1} = (((s3_n & 4294967280) <<17) ^ (((s3_n << 3) ^ s3_n) >>11))
	1023	*
	1024	* computed modulo 2^32. In the three formulas above '^' means
	1025	* exclusive-or (C-notation), not exponentiation. Note that the
	1026	* algorithm relies on the properties of 32-bit unsigned integers (it
	1027	* is formally defined on bit-vectors of length 32).
	1028	*
	1029	* Stolen from GSL (GNU scientific library) and modified somewhat.
	1030	* I am using UINT32, which is guaranteed to be 32 bits. Also made
	1031	* sure that the initialization vector is valid.
	1032	*/
	1033
	1034
	1035	/* interval [0, 4294967296]
	1036	*/
	1037	static UINT32 taus_get_long (void *vstate)
	1038	{
	1039	UINT32 * state = (UINT32 *) vstate;
	1040
[137]	1041	/*
[1]	1042	if (skey->rngI == BAD)
	1043	(void)taus_seed();
[137]	1044	*/
[1]	1045
	1046	#define TAUSWORTHE(s,a,b,c,d) ((s &c) <<d) ^ (((s <<a) ^s) >>b)
	1047	/@+ignorequals@/
	1048	state[0] = TAUSWORTHE (state[0], 13, 19, 4294967294UL, 12);
	1049	state[1] = TAUSWORTHE (state[1], 2, 25, 4294967288UL, 4);
	1050	state[2] = TAUSWORTHE (state[2], 3, 11, 4294967280UL, 17);
	1051	/@-ignorequals@/
	1052	return (state[0] ^ state[1] ^ state[2]);
	1053	}
	1054
	1055	/* Hide the internal state of the PRNG by using its output as
	1056	* input for a one-way hash function.
	1057	*/
[11]	1058
[137]	1059	UINT32 taus_get ()
[1]	1060	{
[156]	1061	#define TAUS_SAMPLE 12
	1062
	1063	UINT32 taus_svec[TAUS_SAMPLE];
[1]	1064	UINT32 retval;
	1065	UINT32 * res;
[156]	1066	UINT32 * res_vec = &(skey->res_vec[0]);
[13]	1067	static int res_num = 0;
[1]	1068	register int i;
[133]	1069	UINT32 kbuf[KEY_BYT/sizeof(UINT32)];
[1]	1070
[137]	1071	SH_MUTEX_LOCK_UNSAFE(mutex_skey);
[13]	1072	if (res_num > 0)
	1073	{
	1074	retval = res_vec[res_num];
	1075	res_num = (res_num == 5) ? 0 : (res_num + 1);
[137]	1076	SH_MUTEX_UNLOCK_UNSAFE(mutex_skey); /* alternative path */
[13]	1077	return retval;
	1078	}
[137]	1079	SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
[13]	1080
[137]	1081	(void)taus_seed();
[1]	1082
[137]	1083	SH_MUTEX_LOCK_UNSAFE(mutex_skey);
[156]	1084	for (i = 0; i < (TAUS_SAMPLE/3); ++i)
	1085	{
	1086	taus_svec[i*3] = taus_get_long (&(skey->rng0[0]));
	1087	taus_svec[i*3+1] = taus_get_long (&(skey->rng1[0]));
	1088	taus_svec[i*3+2] = taus_get_long (&(skey->rng2[0]));
	1089	}
[137]	1090	SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
	1091
[11]	1092	res = sh_tiger_hash_uint32 ( (char *) &taus_svec[0],
[1]	1093	TIGER_DATA,
[156]	1094	(unsigned long)(TAUS_SAMPLE * sizeof(UINT32)),
[133]	1095	kbuf, KEY_BYT/sizeof(UINT32));
[1]	1096
[137]	1097	SH_MUTEX_LOCK_UNSAFE(mutex_skey);
[13]	1098	for (i = 1; i < 6; ++i)
[11]	1099	{
[13]	1100	res_vec[i] = res[i];
[11]	1101	}
[156]	1102	retval = res[0];
[13]	1103	res_num = 1;
[137]	1104	SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
[1]	1105
[156]	1106	memset(taus_svec, '\0', TAUS_SAMPLE * sizeof(UINT32));
[1]	1107
	1108	return retval;
	1109	}
	1110
	1111	/* interval [0,1)
	1112	*/
	1113	double taus_get_double (void *vstate)
	1114	{
	1115	return taus_get_long (vstate) / (4294967296.0 + 1.0) ;
	1116	}
	1117
	1118	#define LCG(n) ((69069 * n) & 0xffffffffUL)
	1119
	1120	/* TAKE CARE: state[0], state[1], state[2] must be > 2,8,16, respectively
	1121	*/
	1122	static void taus_set_from_ulong (void *vstate, unsigned long int s)
	1123	{
	1124	UINT32 state = (UINT32 ) vstate;
	1125
	1126	if (s == 0)
	1127	s = 1; /* default seed is 1 */
	1128
	1129	state[0] = (UINT32)(LCG (s) \| (UINT32) 0x03);
	1130	state[1] = (UINT32)(LCG (state[0]) \| (UINT32) 0x09);
	1131	state[2] = (UINT32)(LCG (state[1]) \| (UINT32) 0x17);
	1132
	1133	/* 'warm up'
	1134	*/
	1135	(void) taus_get_long (state);
	1136	(void) taus_get_long (state);
	1137	(void) taus_get_long (state);
	1138	(void) taus_get_long (state);
	1139	(void) taus_get_long (state);
	1140	(void) taus_get_long (state);
	1141
	1142	return;
	1143	}
	1144
	1145	static void taus_set_from_state (void vstate, void init_state)
	1146	{
	1147	UINT32 state = (UINT32 ) vstate;
	1148	UINT32 state0 = (UINT32 ) init_state;
	1149
	1150	state[0] = state0[0] \| (UINT32) 0x03;
	1151	state[1] = state0[1] \| (UINT32) 0x09;
	1152	state[2] = state0[2] \| (UINT32) 0x17;
	1153
	1154	return;
	1155	}
	1156
	1157
	1158	int taus_seed ()
	1159	{
	1160	char bufx[9 * sizeof(UINT32) + 1];
	1161	int status;
	1162	static unsigned long seed_time = 0;
[137]	1163	unsigned long gtime;
[1]	1164
	1165	SL_ENTER(_("taus_seed"));
	1166
	1167	if (skey->rngI == GOOD)
	1168	{
[137]	1169	if ( (sh_unix_longtime () - seed_time) < 7200)
[1]	1170	SL_RETURN( (0), _("taus_seed"));
	1171	}
	1172
	1173	seed_time = sh_unix_longtime ();
	1174
	1175	status = sh_entropy (24, bufx);
	1176
	1177	if (!SL_ISERROR(status))
	1178	{
[137]	1179	SH_MUTEX_LOCK_UNSAFE(mutex_skey);
[1]	1180	memcpy (&skey->rng0[0], &bufx[0], 2*sizeof(UINT32));
	1181	memcpy (&skey->rng1[0], &bufx[2sizeof(UINT32)], 2sizeof(UINT32));
	1182	memcpy (&skey->rng2[0], &bufx[4sizeof(UINT32)], 2sizeof(UINT32));
	1183	memset (bufx, 0, 9 * sizeof(UINT32) + 1);
	1184
	1185	skey->rng0[2] = 0;
	1186	skey->rng1[2] = 0;
	1187	skey->rng2[2] = 0;
	1188
	1189	taus_set_from_state( &(skey->rng0[0]), &(skey->rng0[0]));
	1190	taus_set_from_state( &(skey->rng1[0]), &(skey->rng1[0]));
	1191	taus_set_from_state( &(skey->rng2[0]), &(skey->rng2[0]));
	1192
[137]	1193	skey->rngI = GOOD;
	1194	SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
[1]	1195	SL_RETURN( (0), _("taus_seed"));
	1196	}
	1197
	1198	sh_error_handle ((-1), FIL__, __LINE__, status, MSG_ES_ENT,
	1199	_("sh_entropy"));
	1200
	1201	/* emergency backup - unsafe !
	1202	*/
	1203	#ifdef HAVE_GETTIMEOFDAY
[137]	1204	gtime = sh_unix_notime();
[1]	1205	#else
[137]	1206	gtime = seed_time;
[1]	1207	#endif
[137]	1208
	1209	SH_MUTEX_LOCK_UNSAFE(mutex_skey);
	1210	taus_set_from_ulong ( &(skey->rng0[0]), LCG (gtime) );
[1]	1211	taus_set_from_ulong ( &(skey->rng1[0]), LCG (skey->rng0[0]) );
	1212	taus_set_from_ulong ( &(skey->rng2[0]), LCG (skey->rng1[0]) );
	1213	skey->rngI = BAD;
[137]	1214	SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
[1]	1215
	1216	SL_RETURN( (-1), _("taus_seed"));
	1217	}
	1218
	1219	/@+charint@/
	1220	static unsigned char new_key[] = { 0xA7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xA7 };
	1221	/@-charint@/
	1222	static void copy_four (unsigned char * dest, UINT32 in);
	1223
[20]	1224	int sh_util_set_newkey (const char * new_in)
[1]	1225	{
	1226	size_t i, j = 0;
	1227	size_t len;
	1228	SL_TICKET fp;
	1229	SL_TICKET fout;
	1230	char * key;
	1231	char * path;
[22]	1232	char * outpath = NULL;
[1]	1233	unsigned char * image = NULL;
	1234	long s = 0;
	1235	long ilen = 0;
	1236	long ii, k = 0;
	1237	UINT32 * h1;
[22]	1238	char * new = NULL;
[1]	1239
	1240	if (0 != sl_is_suid())
	1241	{
[210]	1242	fprintf(stderr, "%s", _("ERROR: insufficient privilege\n"));
[1]	1243	_exit (EXIT_FAILURE);
	1244	/@notreached@/
	1245	return -1; /* braindead MAC OSX compiler needs this */
	1246	}
	1247
[20]	1248	if (new_in == NULL \|\| new_in[0] == '\0')
[1]	1249	{
[210]	1250	fprintf(stderr, "%s",
[1]	1251	_("ERROR: no key given\n Argument must be 'key@path'\n"));
	1252	_exit (EXIT_FAILURE);
	1253	/@notreached@/
	1254	return -1;
	1255	}
[20]	1256
[454]	1257	if (NULL == (new = calloc(1,strlen(new_in) + 1)))
[20]	1258	goto bail_mem;
	1259	sl_strncpy(new, new_in, strlen(new_in) + 1);
	1260
[1]	1261	key = new;
	1262	len = strlen(new);
	1263	for (i = 1; i < (len-2); ++i)
	1264	{
	1265	if (new[i] == '@' && new[i+1] == '/')
	1266	{
	1267	j = i+1; new[i] = '\0'; break;
	1268	}
	1269	}
	1270	if (j == 0)
	1271	{
[210]	1272	fprintf(stderr, "%s",
[1]	1273	_("ERROR: no path to executable given\n Argument must be 'key@path'\n"));
[22]	1274	free(new);
[1]	1275	_exit (EXIT_FAILURE);
	1276	/@notreached@/
	1277	return -1;
	1278	}
	1279	else
	1280	path = &new[j];
[22]	1281
	1282	len = strlen(path) + 1 + 4;
[1]	1283	/@-usedef@/
[454]	1284	if (NULL == (outpath = calloc(1,len)))
[1]	1285	goto bail_mem;
	1286	/@-usedef@/
[22]	1287	sl_snprintf (outpath, len, _("%s.out"), path);
[1]	1288
[248]	1289	fp = sl_open_read(FIL__, __LINE__, path, SL_NOPRIV);
[1]	1290	if (SL_ISERROR(fp))
	1291	{
	1292	fprintf(stderr,
	1293	_("ERROR: cannot open %s for read (errnum = %ld)\n"), path, fp);
[22]	1294	free(new); free (outpath);
[1]	1295	_exit (EXIT_FAILURE);
	1296	/@notreached@/
	1297	return -1;
	1298	}
	1299
[248]	1300	fout = sl_open_write(FIL__, __LINE__, outpath, SL_NOPRIV);
[1]	1301	if (SL_ISERROR(fout))
	1302	{
	1303	fprintf(stderr,
	1304	_("ERROR: cannot open %s (errnum = %ld)\n"), outpath, fout);
[22]	1305	free(new); free (outpath);
[1]	1306	_exit (EXIT_FAILURE);
	1307	/@notreached@/
	1308	return -1;
	1309	}
	1310
	1311
[454]	1312	image = calloc(1,4096);
[1]	1313	if (!image)
	1314	goto bail_mem;
	1315	while (0 < (ii = sl_read (fp, &image[s], 4096)))
	1316	{
	1317	ilen += ii;
	1318	s += 4096;
	1319	image = realloc (image, (size_t) (4096 + s));
	1320	if (!image)
	1321	goto bail_mem;
	1322	}
	1323
	1324	printf(_("%ld bytes read\n"), ilen);
	1325
	1326
	1327	for (k = 0; k < (ilen - 8); ++k)
	1328	{
	1329	if (image[k] == new_key[0] &&
	1330	image[k+1] == new_key[1] &&
	1331	image[k+2] == new_key[2] &&
	1332	image[k+3] == new_key[3] &&
	1333	image[k+4] == new_key[4] &&
	1334	image[k+5] == new_key[5] &&
	1335	image[k+6] == new_key[6] &&
	1336	image[k+7] == new_key[7])
	1337	{
[133]	1338	UINT32 kbuf[KEY_BYT/sizeof(UINT32)];
	1339
[210]	1340	printf("%s", _("old key found\n"));
[1]	1341	h1 = sh_tiger_hash_uint32 (key, TIGER_DATA,
[133]	1342	(unsigned long)strlen(key),
	1343	kbuf, KEY_BYT/sizeof(UINT32));
[1]	1344	copy_four( (unsigned char *) &(image[k]), h1[0]);
	1345	copy_four( (unsigned char *) &(image[k+4]), h1[1]);
	1346	(void) sl_write (fout, image, ilen);
	1347	(void) sl_close (fout);
	1348	printf(_("new file %s written\n"), outpath);
[22]	1349	free(new); free (outpath); free(image);
[1]	1350	_exit (EXIT_SUCCESS);
	1351	/@notreached@/
	1352	return 0;
	1353	}
	1354	}
	1355
[210]	1356	fprintf(stderr, "%s",
[1]	1357	_("ERROR: old key not found\n"));
[22]	1358	free(new); free (outpath); free(image);
[1]	1359	_exit (EXIT_FAILURE);
	1360	/@notreached@/
	1361	return -1;
	1362
	1363
	1364	bail_mem:
[210]	1365	fprintf(stderr, "%s",
[1]	1366	_("ERROR: out of memory\n"));
[22]	1367	if (new) free(new);
	1368	if (outpath) free (outpath);
	1369	if (image) free (image);
[1]	1370	_exit (EXIT_FAILURE);
	1371	/@notreached@/
	1372	return -1;
	1373	}
	1374
	1375
	1376
	1377
	1378	/* A simple en-/decoder, based on Vernam cipher. We use the
	1379	* message as salt to hide the key by obtaining a different one-time
	1380	* pad each time.
	1381	* Should be safe against a listener on the network, but not against someone
	1382	* with read access to the binary.
	1383	*/
	1384	void sh_util_encode (char * data, char * salt, int mode, char fill)
	1385	{
	1386	static char cc1[17] = N_("0123456789ABCDEF");
	1387	char cc[17] = "\0";
	1388	register int i, j, j1 = 0, j2 = 0, j3;
	1389	char * dez;
[133]	1390	char hashbuf[KEYBUF_SIZE];
[1]	1391
	1392	SL_ENTER(_("sh_util_encode"));
	1393
	1394	/* init
	1395	*/
	1396	(void) sl_strlcpy( cc, _(cc1), sizeof(cc));
	1397
	1398	/* max 128 bits keyspace
	1399	*/
	1400	memset (skey->vernam, (int)fill, KEY_LEN+1);
	1401
	1402	dez = (char *) &(skey->ErrFlag[0]);
	1403	sh_util_cpylong (skey->vernam, dez, 4);
	1404	dez = (char *) &(skey->ErrFlag[1]);
	1405	sh_util_cpylong (&skey->vernam[4], dez, 4);
	1406
	1407	skey->vernam[KEY_LEN] = '\0';
	1408
	1409	(void) sl_strlcpy(skey->vernam,
[133]	1410	sh_tiger_hash(skey->vernam, TIGER_DATA, KEY_LEN,
	1411	hashbuf, sizeof(hashbuf)),
[1]	1412	KEY_LEN+1);
	1413
	1414	(void) sl_strlcpy(skey->vernam,
[133]	1415	sh_util_hmac_tiger (skey->vernam, salt, strlen(salt),
	1416	hashbuf, sizeof(hashbuf)),
	1417	KEY_LEN+1);
[1]	1418
	1419	(void) sl_strlcpy(skey->vernam,
[133]	1420	sh_util_hmac_tiger (skey->vernam, (char*) new_key, 8,
	1421	hashbuf, sizeof(hashbuf)),
[1]	1422	KEY_LEN+1);
	1423
	1424	/* The following routine adds/subtracts data[j] and vernam[j] mod 16.
	1425	*/
	1426	j = 0;
	1427	while (j < KEY_LEN)
	1428	{
	1429	for (i = 0; i < 16; ++i)
	1430	{
	1431	if (cc[i] == data[j]) j1 = i;
	1432	if (cc[i] == skey->vernam[j]) j2 = i;
	1433	}
	1434	if (mode == 0)
	1435	{
	1436	j3 = j1 + j2;
	1437	if (j3 > 15) j3 -= 16;
	1438	data[j] = cc[j3];
	1439	}
	1440	else
	1441	{
	1442	j3 = j1 - j2;
	1443	if (j3 < 0) j3 += 16;
	1444	data[j] = cc[j3];
	1445	}
	1446	++j;
	1447	}
	1448	SL_RET0(_("sh_util_encode"));
	1449	}
	1450
	1451	/* server mode
	1452	*/
[20]	1453	int sh_util_setserver (const char * dummy)
[1]	1454	{
	1455	SL_ENTER(_("sh_util_setserver"));
	1456
[20]	1457	(void) dummy;
	1458	sh.flag.isserver = GOOD;
[1]	1459	SL_RETURN((0),_("sh_util_setserver"));
	1460	}
	1461
	1462
[20]	1463	int sh_util_setlooptime (const char * str)
[1]	1464	{
	1465	int i = atoi (str);
	1466
	1467	SL_ENTER(_("sh_util_setlooptime"));
	1468
	1469	if (i >= 0 && i < INT_MAX) {
	1470	sh.looptime = i;
	1471	SL_RETURN((0),_("sh_util_setlooptime"));
	1472	} else {
	1473	sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
	1474	_("loop time"), str);
	1475	SL_RETURN((-1),_("sh_util_setlooptime"));
	1476	}
	1477	}
	1478
	1479	#if defined (SH_WITH_CLIENT) \|\| defined (SH_STANDALONE)
[20]	1480	int sh_util_setchecksum (const char * str)
[1]	1481	{
	1482	static int reject = 0;
	1483
	1484	SL_ENTER(_("sh_util_setchecksum"));
	1485
	1486	if (reject == 1)
	1487	SL_RETURN((0), _("sh_util_setchecksum"));
	1488	reject = 1;
	1489
	1490	if (sl_strncmp (str, _("init"), sizeof("init")-1) == 0)
	1491	{
	1492	sh.flag.checkSum = SH_CHECK_INIT;
	1493	}
	1494	else if (sl_strncmp (str, _("update"), sizeof("update")-1) == 0)
	1495	{
	1496	if (S_TRUE == file_is_remote())
	1497	{
	1498	sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
	1499	_("checksum testing"), str);
	1500	SL_RETURN((-1), _("sh_util_setchecksum"));
	1501	}
	1502	else
	1503	{
	1504	sh.flag.checkSum = SH_CHECK_CHECK;
	1505	sh.flag.update = S_TRUE;
	1506	}
	1507	}
	1508	else if (sl_strncmp (str, _("check"), sizeof("check")-1) == 0)
	1509	{
	1510	sh.flag.checkSum = SH_CHECK_CHECK;
	1511	}
	1512	/*
	1513	else if (sl_strncmp (str, _("update"), sizeof("update")-1) == 0)
	1514	{
	1515	sh.flag.checkSum = SH_CHECK_INIT;
	1516	sh.flag.update = S_TRUE;
	1517	}
	1518	*/
	1519	else if (sl_strncmp (str, _("none"), sizeof("none")-1) == 0)
	1520	{
	1521	sh.flag.checkSum = SH_CHECK_NONE;
	1522	}
	1523	else
	1524	{
	1525	sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
	1526	_("checksum testing"), str);
	1527	SL_RETURN((-1), _("sh_util_setchecksum"));
	1528	}
	1529	SL_RETURN((0), _("sh_util_setchecksum"));
	1530	}
	1531	#endif
	1532
	1533	/@+charint@/
	1534	unsigned char TcpFlag[8][PW_LEN+1] = {
	1535	#if (POS_TF == 1)
	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 == 2)
	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 == 3)
	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 == 4)
	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 == 5)
	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 == 6)
	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 == 7)
	1560	{ 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
	1561	#endif
	1562	{ 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
	1563	#if (POS_TF == 8)
	1564	{ 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
	1565	#endif
	1566	};
	1567	/@-charint@/
	1568
	1569	/* initialize a key to a random value
	1570	* rev 0.8
	1571	*/
	1572	int sh_util_keyinit (char * buf, long size)
	1573	{
	1574	UINT32 bufy[6];
	1575	int i;
	1576	int status = 0;
	1577	char * p;
[133]	1578	char hashbuf[KEYBUF_SIZE];
[1]	1579
	1580	SL_ENTER(_("sh_util_keyinit"));
	1581
	1582	ASSERT((size <= KEY_LEN+1), _("size <= KEY_LEN+1"))
	1583
	1584	if (size > KEY_LEN+1)
	1585	size = KEY_LEN+1;
	1586
	1587	/* seed / re-seed the PRNG if required
	1588	*/
	1589	status = taus_seed ();
	1590
	1591	if (status == -1)
	1592	sh_error_handle ((-1), FIL__, __LINE__, -1, MSG_ES_KEY1,
	1593	_("taus_seed"));
	1594
	1595	for (i = 0; i < 6; ++i)
[170]	1596	bufy[i] = taus_get();
[1]	1597
	1598	p = sh_tiger_hash ((char *) bufy, TIGER_DATA,
[133]	1599	(unsigned long)(6*sizeof(UINT32)),
	1600	hashbuf, sizeof(hashbuf));
[1]	1601
	1602	i = sl_strlcpy(buf, p, (size_t)size);
	1603
	1604	memset (bufy, 0, 6*sizeof(UINT32));
	1605
	1606	if ((status == 0) && (!SL_ISERROR(i)) )
	1607	SL_RETURN((0),_("sh_util_keyinit"));
	1608
	1609	if (SL_ISERROR(i))
	1610	sh_error_handle ((-1), FIL__, __LINE__, i, MSG_ES_KEY2,
	1611	_("sl_strlcpy"));
	1612
	1613	SL_RETURN((-1),_("sh_util_keyinit"));
	1614	}
	1615
	1616	#if defined(SH_WITH_CLIENT) \|\| defined(SH_STANDALONE)
	1617
	1618	static unsigned char sh_obscure_index[256];
[76]	1619	static int sh_obscure_no_check = S_FALSE;
[1]	1620
[68]	1621	int sh_util_valid_utf8 (const unsigned char * str)
	1622	{
[76]	1623	const int sh_val_utf8_1 = 1;
	1624	const int sh_val_utf8_2 = 2;
	1625	const int sh_val_utf8_3 = 3;
	1626	const int sh_val_utf8_4 = 4;
	1627
[170]	1628	size_t len = strlen((const char *)str);
[68]	1629	size_t l = 0;
[76]	1630	int typ = 0;
	1631	unsigned char c = '\0';
	1632	unsigned char c2[2] = { 0x00, 0x00 };
	1633	unsigned char c3[3] = { 0x00, 0x00, 0x00 };
[68]	1634
[76]	1635
[68]	1636	#define SH_VAL_UTF8_1 ((c != '\0') && ((c & 0x80) == 0x00))
	1637	#define SH_VAL_UTF8_2 ((c != '\0') && ((c & 0xE0) == 0xC0)) /* 110x xxxx */
	1638	#define SH_VAL_UTF8_3 ((c != '\0') && ((c & 0xF0) == 0xE0)) /* 1110 xxxx */
	1639	#define SH_VAL_UTF8_4 ((c != '\0') && ((c & 0xF8) == 0xF0)) /* 1111 0xxx */
	1640	#define SH_VAL_UTF8_N ((c != '\0') && ((c & 0xC0) == 0x80)) /* 10xx xxxx */
[76]	1641	#define SH_VAL_BAD ((c == '"') \|\| (c == '\t') \|\| (c == '\b') \|\| \
	1642	(c == '\f') \|\| (c == '\n') \|\| \
[68]	1643	(c == '\r') \|\| (c == '\v') \|\| iscntrl((int) c) \|\| \
	1644	(c != ' ' && !isgraph ((int) c)))
	1645
	1646	while(l < len)
	1647	{
	1648	c = str[l];
	1649
	1650	if (SH_VAL_UTF8_1)
	1651	{
[76]	1652	if (!(SH_VAL_BAD && (sh_obscure_index[c] != 1)))
	1653	{
	1654	typ = sh_val_utf8_1;
	1655	++l; continue;
	1656	}
	1657	else
	1658	{
	1659	return S_FALSE;
	1660	}
[68]	1661	}
	1662	else if (SH_VAL_UTF8_2)
	1663	{
[76]	1664	typ = sh_val_utf8_2;
	1665	c2[0] = c;
	1666	if ((c & 0x3e) != 0x00) /* !(overlong 2-byte seq.) */
	1667	{
	1668	++l;
	1669	if (l != len) {
	1670	c = str[l];
	1671	if(SH_VAL_UTF8_N) {
	1672	c2[1] = c;
	1673	++l; continue;
	1674	}
	1675	else {
	1676	return S_FALSE;
	1677	}
	1678	}
	1679	else {
	1680	return S_FALSE;
	1681	}
	1682	}
	1683	else
	1684	{
	1685	return S_FALSE; /* overlong 2-byte seq. */
	1686	}
[68]	1687	}
	1688	else if (SH_VAL_UTF8_3)
	1689	{
[76]	1690	typ = sh_val_utf8_3;
	1691	c3[0] = c;
[68]	1692	++l; if (l == len) return S_FALSE; c = str[l];
	1693	if(!SH_VAL_UTF8_N) return S_FALSE;
	1694	if (((str[l-1] & 0x1F) == 0x00) && ((c & 0x60) == 0x00))
	1695	return S_FALSE; /* overlong 3-byte seq. */
[76]	1696	c3[1] = c;
[68]	1697	++l; if (l == len) return S_FALSE; c = str[l];
	1698	if(!SH_VAL_UTF8_N) return S_FALSE;
[76]	1699	c3[2] = c;
[68]	1700	++l; continue;
	1701	}
	1702	else if (SH_VAL_UTF8_4)
	1703	{
[76]	1704	typ = sh_val_utf8_4;
[68]	1705	++l; if (l == len) return S_FALSE; c = str[l];
	1706	if(!SH_VAL_UTF8_N) return S_FALSE;
	1707	if (((str[l-1] & 0x0F) == 0x00) && ((c & 0x70) == 0x00))
	1708	return S_FALSE; /* overlong 4-byte seq. */
	1709	++l; if (l == len) return S_FALSE; c = str[l];
	1710	if(!SH_VAL_UTF8_N) return S_FALSE;
	1711	++l; if (l == len) return S_FALSE; c = str[l];
	1712	if(!SH_VAL_UTF8_N) return S_FALSE;
	1713	++l; continue;
	1714	}
	1715	return S_FALSE;
	1716	}
[76]	1717
	1718	/* last character is invisible (space or else)
	1719	*/
	1720	if (typ == sh_val_utf8_1)
	1721	{
	1722	if (c != ' ')
	1723	return S_TRUE;
	1724	else
	1725	return S_FALSE;
	1726	}
	1727	else if (typ == sh_val_utf8_2)
	1728	{
	1729	if (c2[0] == 0xC2 && c2[1] == 0xA0) /* nbsp */
	1730	return S_FALSE;
	1731	else
	1732	return S_TRUE;
	1733	}
	1734	else if (typ == sh_val_utf8_3)
	1735	{
	1736	if (c3[0] == 0xE2)
	1737	{
	1738	if (c3[1] == 0x80 && c3[2] >= 0x80 && c3[2] <= 0x8F)
	1739	return S_FALSE; /* various spaces, left-to-right, right-to-left */
	1740	else if (c3[1] == 0x80 && (c3[2] == 0xA8 \|\| c3[2] == 0xA9 \|\|
	1741	c3[2] == 0xAD \|\| c3[2] == 0xAF))
	1742	return S_FALSE; /* line sep, para sep, zw word joiner, nnbsp */
	1743	else if (c3[1] == 0x81 && (c3[2] == 0xA0 \|\| c3[2] == 0xA1 \|\|
	1744	c3[2] == 0x9F))
	1745	return S_FALSE; /* word joiner, function app, math space */
	1746	else
	1747	return S_TRUE;
	1748	}
	1749	else if (c3[0] == 0xE3 && c3[1] == 0x80 && c3[2] == 0x80)
	1750	{
	1751	return S_FALSE; /* ideographic space */
	1752	}
	1753	else if (c3[0] == 0xEF && c3[1] == 0xBB && c3[2] == 0xBF)
	1754	{
	1755	return S_FALSE; /* zwnbsp */
	1756	}
	1757	else
	1758	{
	1759	return S_TRUE;
	1760	}
	1761	}
	1762	else
	1763	{
	1764	return S_TRUE;
	1765	}
[68]	1766	}
	1767
	1768
[22]	1769	int sh_util_obscure_ok (const char * str)
[1]	1770	{
	1771	unsigned long i;
[22]	1772	char * endptr = NULL;
[1]	1773
[29]	1774	SL_ENTER(_("sh_util_obscure_ok"));
[1]	1775
	1776	if (0 == sl_strncmp("all", str, 3))
	1777	{
	1778	for (i = 0; i < 255; ++i)
	1779	{
	1780	sh_obscure_index[i] = (unsigned char)1;
	1781	}
[76]	1782	sh_obscure_no_check = S_TRUE;
[29]	1783	SL_RETURN(0, _("sh_util_obscure_ok"));
[1]	1784	}
	1785
[76]	1786	sh_obscure_no_check = S_FALSE;
	1787
[1]	1788	for (i = 0; i < 255; ++i)
	1789	{
	1790	sh_obscure_index[i] = (unsigned char)0;
	1791	}
	1792
[22]	1793	i = strtoul (str, &endptr, 0);
	1794	if (i > 255)
	1795	{
[29]	1796	SL_RETURN(-1, _("sh_util_obscure_ok"));
[22]	1797	}
	1798	sh_obscure_index[i] = (unsigned char)1;
	1799	if (*endptr == ',')
	1800	++endptr;
	1801
[1]	1802	while (*endptr != '\0')
	1803	{
	1804	i = strtoul (endptr, &endptr, 0);
	1805	if (i > 255)
	1806	{
[29]	1807	SL_RETURN(-1, _("sh_util_obscure_ok"));
[1]	1808	}
	1809	sh_obscure_index[i] = (unsigned char)1;
	1810	if (*endptr == ',')
	1811	++endptr;
	1812	}
[29]	1813	SL_RETURN(0, _("sh_util_obscure_ok"));
[1]	1814	}
	1815
[68]	1816	static int sh_obscure_check_utf8 = S_FALSE;
	1817
	1818	int sh_util_obscure_utf8 (const char * c)
	1819	{
	1820	int i;
	1821	SL_ENTER(_("sh_util_obscure_utf8"));
	1822	i = sh_util_flagval(c, &(sh_obscure_check_utf8));
[76]	1823	if (sh_obscure_check_utf8 == S_TRUE)
	1824	sh_obscure_no_check = S_FALSE;
[68]	1825	SL_RETURN(i, _("sh_util_obscure_utf8"));
	1826	}
	1827
	1828
[373]	1829	int sh_util_obscurename (ShErrLevel level, const char * name_orig, int flag)
[1]	1830	{
[373]	1831	const unsigned char * name = (unsigned char *) name_orig;
[1]	1832	char * safe;
	1833	unsigned int i;
[76]	1834	size_t len = 0;
[1]	1835
	1836	SL_ENTER(_("sh_util_obscurename"));
	1837
	1838	ASSERT_RET((name != NULL), _("name != NULL"), (0))
	1839
[76]	1840	if (sh_obscure_no_check == S_FALSE)
[68]	1841	{
[76]	1842	if (sh_obscure_check_utf8 != S_TRUE)
[68]	1843	{
[76]	1844	/* -- Check name. --
	1845	*/
	1846	while (*name != '\0')
	1847	{
	1848	if ( (name) > 0x7F \|\| (name) == '"' \|\| (*name) == '\t' \|\|
	1849	(name) == '\b' \|\| (name) == '\f' \|\|
	1850	(name) == '\n' \|\| (name) == '\r' \|\|
	1851	(name) == '\v' \|\| iscntrl((int) name) \|\|
	1852	((name) != ' ' && !isgraph ((int) name)) )
	1853	{
	1854	i = (unsigned char) *name;
	1855	if (sh_obscure_index[i] != (unsigned char)1)
	1856	{
	1857	goto err;
	1858	}
	1859	}
	1860	name++; ++len;
	1861	}
	1862
	1863	/* Check for blank at end of name
	1864	*/
	1865	if ((len > 0) && (name_orig[len-1] == ' '))
	1866	{
	1867	goto err;
	1868	}
[68]	1869	}
[76]	1870	else
[1]	1871	{
[76]	1872	if (S_FALSE == sh_util_valid_utf8(name))
[1]	1873	{
[68]	1874	goto err;
[1]	1875	}
[76]	1876	SL_RETURN((0),_("sh_util_obscurename"));
[1]	1877	}
	1878	}
[76]	1879
[1]	1880	SL_RETURN((0),_("sh_util_obscurename"));
[68]	1881
	1882	err:
[76]	1883
[68]	1884	if (flag == S_TRUE)
	1885	{
	1886	safe = sh_util_safe_name (name_orig);
	1887	sh_error_handle (level, FIL__, __LINE__, 0, MSG_FI_OBSC,
	1888	safe);
	1889	SH_FREE(safe);
	1890	}
	1891	SL_RETURN((-1),_("sh_util_obscurename"));
[1]	1892	}
[68]	1893
[1]	1894	#endif
	1895
	1896	/* returns freshly allocated memory, return value should be free'd
	1897	*/
[34]	1898	char * sh_util_dirname(const char * fullpath)
[1]	1899	{
	1900	char * retval;
[34]	1901	size_t len;
[93]	1902	char * tmp;
[1]	1903
[34]	1904	SL_ENTER(_("sh_util_dirname"));
[1]	1905
	1906	ASSERT_RET ((fullpath != NULL), _("fullpath != NULL"), (NULL))
[93]	1907	ASSERT_RET ((fullpath == '/'), _("fullpath == '/'"), (NULL))
[1]	1908
[93]	1909	retval = sh_util_strdup(fullpath);
[1]	1910
[93]	1911	tmp = retval;
	1912	while (*tmp == '/') ++tmp;
[34]	1913
[93]	1914	/* (1) only leading slashes -- return exact copy
	1915	*/
	1916	if (*tmp == '\0')
	1917	{
	1918	SL_RETURN(retval, _("sh_util_dirname"));
	1919	}
	1920
	1921	/* (2) there are non-slash characters, so delete trailing slashes
	1922	*/
	1923	len = sl_strlen (retval); /* retval[len] is terminating '\0' */
	1924
	1925	while (len > 1 && retval[len-1] == '/') /* delete trailing slash */
	1926	{
	1927	retval[len-1] = '\0';
	1928	--len;
	1929	}
	1930
	1931	/* (3) now delete all non-slash characters up to the preceding slash
	1932	*/
	1933	while (len > 1 && retval[len-1] != '/') {
	1934	retval[len-1] = '\0';
[34]	1935	--len;
[1]	1936	}
	1937
[93]	1938	/* (4a) only leading slashes left, so return this
[1]	1939	*/
[93]	1940	if (&(retval[len]) == tmp)
	1941	{
	1942	SL_RETURN(retval, _("sh_util_dirname"));
[34]	1943	}
[1]	1944
[93]	1945	/* (4b) strip trailing slash(es) of parent directory
	1946	*/
	1947	while (len > 1 && retval[len-1] == '/') {
	1948	retval[len-1] = '\0';
	1949	--len;
	1950	}
	1951	SL_RETURN(retval, _("sh_util_dirname"));
[1]	1952
	1953	}
	1954
	1955	/* returns freshly allocated memory, return value should be free'd
	1956	*/
[34]	1957	char * sh_util_basename(const char * fullpath)
[1]	1958	{
[93]	1959	char * retval = NULL;
	1960	const char * tmp;
	1961	char * tmp2;
	1962	char * c;
	1963	size_t len;
[1]	1964
[34]	1965	SL_ENTER(_("sh_util_basename"));
[1]	1966
	1967	ASSERT_RET ((fullpath != NULL), _("fullpath != NULL"), (NULL))
	1968
[93]	1969	tmp = fullpath; while (*tmp == '/') ++tmp;
	1970	if (*tmp == '\0')
[34]	1971	{
[93]	1972	retval = sh_util_strdup(fullpath);
[34]	1973	}
	1974	else
	1975	{
[93]	1976	tmp2 = sh_util_strdup(tmp);
	1977	len = sl_strlen (tmp2);
	1978
	1979	while (len > 1 && tmp2[len-1] == '/')
[34]	1980	{
[93]	1981	tmp2[len-1] = '\0';
	1982	--len;
	1983	}
	1984
[382]	1985	if (tmp2) /* for llvm/clang analyzer */
[93]	1986	{
[382]	1987	c = strrchr(tmp2, '/');
	1988	if (c)
	1989	{
	1990	retval = sh_util_strdup(++c);
	1991	SH_FREE(tmp2);
	1992	}
	1993	else
	1994	{
	1995	retval = tmp2;
	1996	}
[34]	1997	}
	1998	}
[1]	1999
[34]	2000	SL_RETURN(retval, _("sh_util_basename"));
[1]	2001	}
	2002
[185]	2003	#define SH_ESCAPE_SPACE 1
	2004	#define SH_DONT_ESCAPE_SPACE 0
	2005	char * sh_util_safe_name_int (const char * name, int escape_space);
	2006
	2007	char * sh_util_safe_name (const char * name)
	2008	{
	2009	return sh_util_safe_name_int (name, SH_ESCAPE_SPACE);
	2010	}
	2011
	2012	char * sh_util_safe_name_keepspace (const char * name)
	2013	{
	2014	return sh_util_safe_name_int (name, SH_DONT_ESCAPE_SPACE);
	2015	}
	2016
[1]	2017	/* returns freshly allocated memory, return value should be free'd
	2018	*/
[185]	2019	char * sh_util_safe_name_int (const char * name, int escape_space)
[1]	2020	{
	2021	register int i = 0;
	2022	const char * p;
	2023	char * retval;
	2024	char oct[32];
	2025	char format[16];
[34]	2026	size_t len;
[1]	2027
	2028	SL_ENTER(_("sh_util_safe_name"));
	2029
	2030	if (name == NULL)
	2031	{
	2032	/* return an allocated array
	2033	*/
	2034	retval = SH_ALLOC(7);
	2035	(void) sl_strlcpy(retval, _("(null)"), 7);
	2036	SL_RETURN(retval, _("sh_util_safe_name"));
	2037	}
	2038
	2039	/*
	2040	ASSERT_RET ((name != NULL), _("name != NULL"), _("NULL"))
	2041	*/
	2042
[34]	2043	len = sl_strlen(name);
	2044	p = name;
	2045
[1]	2046	#ifdef SH_USE_XML
[34]	2047	if (sl_ok_muls (6, len) && sl_ok_adds ((6*len), 2))
	2048	{ retval = SH_ALLOC(6 * len + 2); }
	2049	else
	2050	{
	2051	/* return an allocated array
	2052	*/
	2053	retval = SH_ALLOC(11);
	2054	(void) sl_strlcpy(retval, _("(overflow)"), 11);
	2055	SL_RETURN(retval, _("sh_util_safe_name"));
	2056	}
[1]	2057	#else
[34]	2058	if (sl_ok_muls (4, len) && sl_ok_adds ((4*len), 2))
	2059	{ retval = SH_ALLOC(4 * len + 2); }
	2060	else
	2061	{
	2062	/* return an allocated array
	2063	*/
	2064	retval = SH_ALLOC(11);
	2065	(void) sl_strlcpy(retval, _("(overflow)"), 11);
	2066	SL_RETURN(retval, _("sh_util_safe_name"));
	2067	}
[1]	2068	#endif
	2069
	2070	(void) sl_strncpy(format, _("%c%03o"), 16);
	2071
	2072	while (*p != '\0') {
	2073	/* Most frequent cases first
	2074	*/
	2075	if ( ((p) >= 'a' && (p) <= 'z') \|\| ((p) == '/') \|\| ((p) == '.') \|\|
	2076	((p) >= '0' && (p) <= '9') \|\|
	2077	((p) >= 'A' && (p) <= 'Z')) {
	2078	retval[i] = *p;
	2079	} else if ( (p) == '\\') { / backslash */
	2080	retval[i] = '\\'; ++i;
	2081	retval[i] = '\\';
	2082	} else if ( (p) == '\n') { / newline */
	2083	retval[i] = '\\'; ++i;
	2084	retval[i] = 'n';
	2085	} else if ( (p) == '\b') { / backspace */
	2086	retval[i] = '\\'; ++i;
	2087	retval[i] = 'b';
	2088	} else if ( (p) == '\r') { / carriage return */
	2089	retval[i] = '\\'; ++i;
	2090	retval[i] = 'r';
	2091	} else if ( (p) == '\t') { / horizontal tab */
	2092	retval[i] = '\\'; ++i;
	2093	retval[i] = 't';
	2094	} else if ( (p) == '\v') { / vertical tab */
	2095	retval[i] = '\\'; ++i;
	2096	retval[i] = 'v';
	2097	} else if ( (p) == '\f') { / form-feed */
	2098	retval[i] = '\\'; ++i;
	2099	retval[i] = 'f';
	2100	#ifdef WITH_DATABASE
	2101	} else if ( (p) == '\'') { / single quote */
	2102	retval[i] = '\\'; ++i;
	2103	retval[i] = '\'';
	2104	#endif
	2105	} else if ( (p) == ' ') { / space */
[185]	2106	if (escape_space) {
	2107	retval[i] = '\\'; ++i;
	2108	retval[i] = ' ';
	2109	}
	2110	else {
	2111	retval[i] = *p;
	2112	}
[1]	2113	#ifdef SH_USE_XML
	2114	} else if ( (p) == '"') { / double quote */
	2115	retval[i] = '&'; ++i;
	2116	retval[i] = 'q'; ++i;
	2117	retval[i] = 'u'; ++i;
	2118	retval[i] = 'o'; ++i;
	2119	retval[i] = 't'; ++i;
	2120	retval[i] = ';';
	2121	} else if ( (p) == '&') { / ampersand */
	2122	retval[i] = '&'; ++i;
	2123	retval[i] = 'a'; ++i;
	2124	retval[i] = 'm'; ++i;
	2125	retval[i] = 'p'; ++i;
	2126	retval[i] = ';';
	2127	} else if ( (p) == '<') { / left angle */
	2128	retval[i] = '&'; ++i;
	2129	retval[i] = 'l'; ++i;
	2130	retval[i] = 't'; ++i;
	2131	retval[i] = ';';
	2132	} else if ( (p) == '>') { / right angle */
	2133	retval[i] = '&'; ++i;
	2134	retval[i] = 'g'; ++i;
	2135	retval[i] = 't'; ++i;
	2136	retval[i] = ';';
	2137	#else
	2138	} else if ( (p) == '"') { / double quote */
	2139	retval[i] = '\\'; ++i;
	2140	retval[i] = '\"';
	2141	#endif
	2142	} else if (!isgraph ((int) p)) { / not printable */
	2143	/@-bufferoverflowhigh -formatconst@/
[22]	2144	/* flawfinder: ignore */
[1]	2145	sprintf(oct, format, '\\', /* known to fit */
	2146	(unsigned char) *p);
	2147	/@+bufferoverflowhigh +formatconst@/
	2148	retval[i] = oct[0]; ++i;
	2149	retval[i] = oct[1]; ++i;
	2150	retval[i] = oct[2]; ++i;
	2151	retval[i] = oct[3];
	2152	} else {
	2153	retval[i] = *p;
	2154	}
	2155	++p;
	2156	++i;
	2157	}
	2158	retval[i] = '\0';
	2159	SL_RETURN(retval, _("sh_util_safe_name"));
	2160	}
	2161
[149]	2162	int sh_util_isnum (const char *str)
[1]	2163	{
[149]	2164	const char *p = str;
[1]	2165
	2166	SL_ENTER(_("sh_util_isnum"));
	2167
	2168	ASSERT_RET ((str != NULL), _("str != NULL"), (-1))
	2169
	2170	while (p) {
	2171	if (!isdigit((int) *p) )
	2172	SL_RETURN((-1), _("sh_util_isnum"));
	2173	++p;
	2174	}
	2175	SL_RETURN((0), _("sh_util_isnum"));
	2176	}
	2177
[149]	2178	char * sh_util_strconcat (const char * arg1, ...)
[1]	2179	{
[34]	2180	size_t length, l2;
[1]	2181	char * s;
	2182	char * strnew;
	2183	va_list vl;
	2184
	2185	SL_ENTER(_("sh_util_strconcat"));
	2186
	2187	ASSERT_RET ((arg1 != NULL), _("arg1 != NULL"), (NULL))
	2188
	2189	length = sl_strlen (arg1) + 1;
	2190
	2191	va_start (vl, arg1);
	2192	s = va_arg (vl, char * );
	2193	while (s != NULL)
	2194	{
[34]	2195	l2 = sl_strlen (s);
	2196	if (sl_ok_adds(length, l2))
	2197	length += l2;
	2198	else
	2199	SL_RETURN(NULL, _("sh_util_strconcat"));
[1]	2200	s = va_arg (vl, char * );
	2201	}
	2202	va_end (vl);
	2203
[34]	2204	if (sl_ok_adds(length, 2))
	2205	strnew = SH_ALLOC( length + 2 );
	2206	else
	2207	SL_RETURN(NULL, _("sh_util_strconcat"));
	2208
[1]	2209	strnew[0] = '\0';
	2210
	2211	(void) sl_strlcpy (strnew, arg1, length + 2);
	2212
	2213	va_start (vl, arg1);
	2214	s = va_arg (vl, char * );
	2215	while (s)
	2216	{
	2217	(void) sl_strlcat (strnew, s, length + 2);
	2218	s = va_arg (vl, char * );
	2219	}
	2220	va_end (vl);
	2221
	2222	SL_RETURN(strnew, _("sh_util_strconcat"));
	2223	}
	2224
[167]	2225	static const char bto64_0[] = N_("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789()");
	2226	static char bto64[65] = { '\0' };
[1]	2227
[167]	2228
[226]	2229	size_t sh_util_base64_enc (unsigned char * out,
	2230	const unsigned char * instr,
[167]	2231	size_t lin)
	2232	{
	2233	int ll;
	2234	unsigned char a, b, c;
	2235	size_t len = 0;
	2236	size_t j = 0;
	2237
	2238	start:
	2239	if (bto64[0] != '\0')
	2240	{
[444]	2241	if (instr /* && instr //* need to handle binary data */)
[167]	2242	{
	2243	if (lin == 0)
[170]	2244	lin = strlen((const char *)instr);
[167]	2245
[444]	2246	if (lin > 0)
	2247	{
	2248	do {
	2249	ll = 0;
	2250
	2251	if (len < lin)
	2252	{ a = *instr; ++instr; ++len; ++ll; }
	2253	else
	2254	{ a = 0; }
	2255	if (len < lin)
	2256	{ b = *instr; ++instr; ++len; ++ll; }
	2257	else
	2258	{ b = 0; }
	2259	if (len < lin)
	2260	{ c = *instr; ++instr; ++len; ++ll; }
	2261	else
	2262	{ c = 0; }
	2263
	2264	*out = bto64[ a >> 2 ];
	2265	++j; ++out;
	2266	*out = bto64[ ((a & 0x03) << 4) \| ((b & 0xf0) >> 4) ];
	2267	++j; ++out;
	2268	*out = (unsigned char) (ll > 1 ? bto64[ ((b & 0x0f) << 2) \| ((c & 0xc0) >> 6) ] : '?');
	2269	++j; ++out;
	2270	*out = (unsigned char) (ll > 2 ? bto64[ c & 0x3f ] : '?');
	2271	++j; ++out;
	2272	} while (len < lin);
	2273	}
[167]	2274	}
	2275	*out = '\0';
	2276	return j;
	2277	}
	2278
	2279	memcpy(bto64, _(bto64_0), 65);
	2280	goto start;
	2281	}
	2282
	2283	size_t sh_util_base64_enc_alloc (char *out, const char in, size_t inlen)
	2284	{
	2285	size_t outlen = SH_B64_SIZ(inlen);
	2286
	2287	if (inlen > outlen) /* overflow */
	2288	{
	2289	*out = NULL;
	2290	return 0;
	2291	}
	2292
	2293	*out = SH_ALLOC(outlen);
[170]	2294	return sh_util_base64_enc((unsigned char )out, (const unsigned char *)in, inlen);
[167]	2295	}
	2296
[226]	2297	size_t sh_util_base64_dec (unsigned char *out,
	2298	const unsigned char *in,
[167]	2299	size_t lin)
	2300	{
	2301	size_t i;
	2302	unsigned char c;
	2303	unsigned char b;
	2304	size_t lout = 0;
	2305	int w = 0;
	2306
	2307	if (out && in)
	2308	{
	2309	if (lin == 0)
[170]	2310	lin = strlen((const char *)in);
[167]	2311
	2312	for (i = 0; i < lin; i++)
	2313	{
	2314	c = *in; ++in;
	2315	b = 0;
	2316
	2317	if ((c >= 'A') && (c <= 'Z'))
	2318	{
	2319	b = (c - 'A');
	2320	}
	2321	else if ((c >= 'a') && (c <= 'z'))
	2322	{
	2323	b = (c - 'a' + 26);
	2324	}
	2325	else if ((c >= '0') && (c <= '9'))
	2326	{
	2327	b = (c - '0' + 52);
	2328	}
	2329	else if (c == '(' \|\| c == '+')
	2330	{
	2331	b = 62;
	2332	}
	2333	else if (c == ')' \|\| c == '/')
	2334	{
[170]	2335	b = 63;
[167]	2336	}
	2337	else if (c == '?' \|\| c == '=')
	2338	{
	2339	/* last byte was written to, but will now get
	2340	* truncated
	2341	*/
	2342	if (lout > 0) --lout;
	2343	break;
	2344	}
	2345
	2346	if (w == 0)
	2347	{
	2348	*out = (b << 2) & 0xfc;
	2349	++lout;
	2350	}
	2351	else if (w == 1)
	2352	{
	2353	*out \|= (b >> 4) & 0x03;
	2354	++out;
	2355	*out = (b << 4) & 0xf0;
	2356	++lout;
	2357	}
	2358	else if (w == 2)
	2359	{
	2360	*out \|= (b >> 2) & 0x0f;
	2361	++out;
	2362	*out = (b << 6) & 0xc0;
	2363	++lout;
	2364	}
	2365	else if (w == 3)
	2366	{
	2367	*out \|= b & 0x3f;
	2368	++out;
	2369	}
	2370
	2371	++w;
	2372
	2373	if (w == 4)
	2374	{
	2375	w = 0;
	2376	}
	2377	}
	2378	*out = '\0';
	2379	}
	2380	return lout;
	2381	}
	2382
	2383	size_t sh_util_base64_dec_alloc (unsigned char *out, const unsigned char in,
	2384	size_t lin)
	2385	{
	2386	size_t lout = 3 * (lin / 4) + 2;
	2387
	2388	*out = SH_ALLOC(lout);
	2389
	2390	return sh_util_base64_dec (*out, in, lin);
	2391	}
	2392
	2393
[1]	2394	#ifdef HAVE_REGEX_H
	2395
	2396	#include <regex.h>
	2397
	2398	int sh_util_regcmp (char * regex_str, char * in_str)
	2399	{
	2400	#if defined(REG_ESPACE)
	2401	int status = REG_ESPACE;
	2402	#else
	2403	int status = -1;
	2404	#endif
	2405	regex_t preg;
	2406	char * errbuf;
	2407
	2408	SL_ENTER(_("sh_util_regcmp"));
	2409
	2410	status = regcomp(&preg, regex_str, REG_NOSUB\|REG_EXTENDED);
	2411
	2412	if (status == 0)
	2413	{
	2414	if ((status = regexec(&preg, in_str, 0, NULL, 0)) == 0)
	2415	{
	2416	regfree (&preg);
	2417	SL_RETURN((0), _("sh_util_regcmp"));
	2418	}
	2419	}
	2420
	2421	if (status != 0 && status != REG_NOMATCH)
	2422	{
[34]	2423	errbuf = SH_ALLOC(BUFSIZ);
[1]	2424	(void) regerror(status, &preg, errbuf, BUFSIZ);
[34]	2425	errbuf[BUFSIZ-1] = '\0';
[1]	2426	sh_error_handle ((-1), FIL__, __LINE__, status, MSG_E_REGEX,
	2427	errbuf, regex_str);
	2428	SH_FREE(errbuf);
	2429	}
	2430
	2431	regfree (&preg);
	2432	SL_RETURN((-1), _("sh_util_regcmp"));
	2433	}
	2434
	2435	#endif
	2436
	2437
	2438
	2439
	2440
	2441
	2442
	2443

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