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source: trunk/src/sh_utils.c@ 138

Last change on this file since 138 was 137, checked in by rainer, 17 years ago
Fix compile errors.
File size: 48.7 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;
	109
[1]	110	sh_unix_setnodeamon(NULL);
	111
	112	return 0;
	113	}
	114
	115	#if !defined(STDIN_FILENO)
	116	#define STDIN_FILENO 0
	117	#endif
	118	#if !defined(STDERR_FILENO)
	119	#define STDERR_FILENO 0
	120	#endif
	121
	122	int sh_util_ask_update(char * path)
	123	{
	124	int inchar, c;
	125	int i = S_TRUE;
	126	char * tmp = NULL;
	127
	128	SL_ENTER(_("sh_util_ask_update"));
	129
	130	if (sh_ask_update != S_TRUE)
	131	{
	132	SL_RETURN(i, _("sh_util_ask_update"));
	133	}
	134
	135	#ifdef HAVE_TTYNAME
	136	if (!ttyname(STDIN_FILENO))
	137	{
	138	if (NULL != ttyname(STDERR_FILENO))
	139	{
	140	if (NULL == freopen(ttyname(STDERR_FILENO), "r", stdin))
	141	{
	142	sh_error_handle ((-1), FIL__, __LINE__, 0,
	143	MSG_E_SUBGEN,
	144	_("Cannot continue: stdin is not a terminal"),
	145	_("sh_util_ask_update"));
	146	exit(EXIT_FAILURE);
	147	}
	148	}
	149	else
	150	{
	151	sh_error_handle ((-1), FIL__, __LINE__, 0,
	152	MSG_E_SUBGEN,
	153	_("Cannot continue: stdin is not a terminal"),
	154	_("sh_util_ask_update"));
	155	exit(EXIT_FAILURE);
	156	}
	157	}
	158	#endif
	159
	160	if (sh_ask_update == S_TRUE)
	161	{
	162	tmp = sh_util_safe_name (path);
	163	fprintf (stderr, _("Update %s [Y/n] ? "), tmp);
	164	SH_FREE(tmp);
	165	while (1 == 1)
	166	{
	167	c = fgetc(stdin); inchar = c;
	168	/@+charintliteral@/
	169	while (c != '\n' && c != EOF)
	170	c = fgetc(stdin);
	171	/* fprintf(stderr, "CHAR (1): %c\n", inchar); */
	172	if (inchar == 'Y' \|\| inchar == 'y' \|\| inchar == '\n')
	173	{
	174	break;
	175	}
	176	else if (inchar == 'n' \|\| inchar == 'N')
	177	{
	178	i = S_FALSE;
	179	break;
	180	}
	181	else
	182	{
	183	fprintf(stderr, _("Please answer y(es) or n(o)\n"));
	184	}
	185	/@-charintliteral@/
	186	}
	187	}
	188
	189	SL_RETURN(i, _("sh_util_ask_update"));
	190	}
	191
[22]	192	int sh_util_hidesetup(const char * c)
[1]	193	{
	194	int i;
	195	SL_ENTER(_("sh_util_hidesetup"));
	196	i = sh_util_flagval(c, &(sh.flag.hidefile));
	197
	198	SL_RETURN(i, _("sh_util_hidesetup"));
	199	}
[68]	200
	201	char * sh_util_acl_compact(char * buf, ssize_t len)
	202	{
	203	unsigned char * p = (unsigned char *) buf;
	204	int state = 0;
	205	ssize_t rem = 0;
	206	char * out;
	207
	208	SH_VALIDATE_NE(buf, NULL);
	209	SH_VALIDATE_GE(len, 0);
	210
	211	out = SH_ALLOC(len + 1);
	212
	213	while (*p != '\0') {
	214
	215	/* -- not at start or after newline
	216	*/
	217	if (state == 1) {
	218	if (p == '\n' \|\| p == ' ' \|\| p == '\t' \|\| p == '#') {
	219	while (*p != '\n') {
	220	++p;
	221	if (*p == '\0') {
	222	goto exit_it;
	223	}
	224	}
	225	out[rem] = ','; ++rem;
	226	while (p[1] == '\n') ++p; /* scan over consecutive newlines */
	227	state = 0;
	228	if (p[1] == '\0') {
	229	if (rem > 0) out[rem-1] = '\0';
	230	break;
	231	}
	232	}
	233	else {
	234	if (p <= 0x7F && isgraph((int) p)) {
	235	out[rem] = (char) *p; ++rem;
	236	}
	237	}
	238	}
	239
	240	/* -- at start or after newline
	241	*/
	242	else /* if (state == 0) */ {
	243	if (0 == strncmp((char *) p, "user", 4)) {
	244	out[rem] = 'u'; ++rem;
	245	p += 3; state = 1;
	246	} else if (0 == strncmp((char *) p, "group", 5)) {
	247	out[rem] = 'g'; ++rem;
	248	p += 4; state = 1;
	249	} else if (0 == strncmp((char *) p, "mask", 4)) {
	250	out[rem] = 'm'; ++rem;
	251	p += 3; state = 1;
	252	} else if (0 == strncmp((char *) p, "other", 5)) {
	253	out[rem] = 'o';
	254	p += 4; state = 1; ++rem;
	255	} else if (*p == '\0') {
	256	if (rem > 0) { out[rem-1] = '\0'; }
	257	break;
	258	} else {
	259	if (p <= 0x7F && isprint((int) p)) {
	260	out[rem] = (char) *p; ++rem;
	261	}
	262	}
	263	state = 1;
	264	}
	265	++p;
	266	}
	267	exit_it:
	268	out[rem] = '\0';
	269	return out;
	270	}
[76]	271
	272
	273	char * sh_util_strdup_l (const char * str, size_t len)
	274	{
	275	char * p = NULL;
	276
	277	SL_ENTER(_("sh_util_strdup_l"));
	278
	279	SH_VALIDATE_NE(str, NULL);
	280	SH_VALIDATE_NE(len, 0);
	281
	282	if (sl_ok_adds (len, 1))
	283	{
	284	p = SH_ALLOC (len + 1);
	285	(void) sl_strlcpy (p, str, len+1);
	286	}
	287	else
	288	{
	289	safe_fatal(_("integer overflow in sh_util_strdup_l"), FIL__, __LINE__);
	290	}
	291	SL_RETURN( p, _("sh_util_strdup_l"));
	292	}
	293
[1]	294	char * sh_util_strdup (const char * str)
	295	{
	296	char * p = NULL;
	297	size_t len;
	298
	299	SL_ENTER(_("sh_util_strdup"));
	300
[25]	301	SH_VALIDATE_NE(str, NULL);
	302
	303	len = sl_strlen(str);
	304	p = SH_ALLOC (len + 1);
	305	(void) sl_strlcpy (p, str, len+1);
	306
[1]	307	SL_RETURN( p, _("sh_util_strdup"));
	308	}
	309
	310	/* by the eircom.net computer incident
	311	* response team
	312	*/
	313	char * sh_util_strsep (char *str, const char delim)
	314	{
	315	char ret, c, *d;
	316
	317	SL_ENTER(_("sh_util_strsep"));
	318	ret = *str;
	319
[25]	320	SH_VALIDATE_NE(ret, NULL);
[1]	321
	322	for (c = str; c != '\0'; c++) {
	323	for (d = (char ) delim; d != '\0'; d++) {
	324	if (c == d) {
	325	*c = '\0';
	326	*str = c + 1;
	327	SL_RETURN(ret, _("sh_util_strsep"));
	328	}
	329	}
	330	}
	331
	332	/* If we get to here, there's no delimiters in the string */
	333	*str = NULL;
	334	SL_RETURN(ret, _("sh_util_strsep"));
	335	}
	336
	337
[13]	338	/* returned string must be free'd by caller.
[1]	339	*/
	340	char * sh_util_formatted (const char * formatt, st_format * ftab)
	341	{
	342	struct tm * time_ptr;
	343	size_t size;
	344	size_t isiz;
	345	char * fmt = NULL;
	346	char * p;
	347	char * q;
	348	char * outstr;
	349	int i;
	350	int j;
	351	time_t inpp;
	352
[13]	353	char * clist[16] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	354	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL };
[1]	355	int nn = 0;
	356
	357	SL_ENTER(_("sh_util_formatted"));
	358
[13]	359	if (formatt == NULL \|\| ftab == NULL \|\| *formatt == '\0')
[1]	360	SL_RETURN(NULL, _("sh_util_formatted"));
	361
	362	/* -- save the format (we overwrite it !!) --
	363	*/
	364	size = sl_strlen(formatt);
	365
[34]	366	if (!sl_ok_adds(size, 1))
	367	SL_RETURN(NULL, _("sh_util_formatted"));
[13]	368
[34]	369	++size;
	370	fmt = SH_ALLOC(size);
	371	(void) sl_strlcpy(fmt, formatt, size);
	372
[1]	373	p = fmt;
	374
	375	j = 0;
[13]	376	while (ftab[j].fchar != '\0') {
	377	if (ftab[j].type != S_FMT_STRING)
	378	ftab[j].data_str = NULL;
	379	++j;
	380	}
	381
[1]	382	while (p != NULL && *p != '\0' && NULL != (q = strchr(p, '%')))
	383	{
	384	++q;
	385
	386	/* fprintf(stderr, "p == %s q == %s\n", p, q); */
	387
	388	/* -- end of string is a '%' --
	389	*/
	390	if (*q == '\0')
	391	{
	392	--q;
	393	*q = '\0';
	394	break;
	395	}
	396
	397	i = 0;
	398	j = 0;
	399
	400	/* -- search the format char in input table --
	401	* put (nn < 16) here -> all remaining %foo will be
	402	* converted to %%
	403	*/
	404	while (ftab[j].fchar != '\0' && nn < 16)
	405	{
	406	if (ftab[j].fchar == *q)
	407	{
	408	/* -- Convert it to a string format (%s). --
	409	*/
	410	*q = 's'
	411	;
	412	i = 1;
	413
[13]	414	switch(ftab[j].type) {
	415
	416	case S_FMT_STRING:
[1]	417	{
	418	isiz = sl_strlen(ftab[j].data_str);
[34]	419	if (isiz > 0 && sl_ok_adds(size, isiz))
[1]	420	{
	421	size += isiz;
	422	clist[nn] = ftab[j].data_str;
	423	++nn;
	424	}
	425	else
	426	*q = '%';
[13]	427	goto endsrch;
[1]	428	}
[13]	429	break;
	430
	431	case S_FMT_ULONG:
[1]	432	{
	433	ftab[j].data_str = (char *) SH_ALLOC(64);
	434	/@-bufferoverflowhigh@/
	435	sprintf (ftab[j].data_str, "%lu", /* known to fit */
	436	ftab[j].data_ulong);
	437	/@+bufferoverflowhigh@/
	438	isiz = sl_strlen(ftab[j].data_str);
[34]	439	if (isiz > 0 && sl_ok_adds(size, isiz))
[1]	440	{
	441	size += isiz;
	442	clist[nn] = ftab[j].data_str;
	443	++nn;
	444	}
	445	else
	446	*q = '%';
[13]	447	goto endsrch;
[1]	448	}
[13]	449	break;
	450
	451	case S_FMT_LONG:
[1]	452	{
	453	ftab[j].data_str = (char *) SH_ALLOC(64);
	454	/@-bufferoverflowhigh@/
	455	sprintf (ftab[j].data_str, "%ld", /* known to fit */
	456	ftab[j].data_long);
	457	/@+bufferoverflowhigh@/
	458	isiz = sl_strlen(ftab[j].data_str);
[34]	459	if (isiz > 0 && sl_ok_adds(size, isiz))
[1]	460	{
	461	size += isiz;
	462	clist[nn] = ftab[j].data_str;
	463	++nn;
	464	}
	465	else
	466	*q = '%';
[13]	467	goto endsrch;
[1]	468	}
[13]	469	break;
	470
	471	case S_FMT_TIME:
[1]	472	{
	473	ftab[j].data_str = (char *) SH_ALLOC(64);
	474	inpp = (time_t)ftab[j].data_ulong;
	475	if (inpp != 0)
	476	{
	477	time_ptr = localtime (&(inpp));
	478	if (time_ptr != NULL)
	479	(void) strftime(ftab[j].data_str, 64,
	480	_("%d-%m-%Y %H:%M:%S"), time_ptr);
	481	else
	482	(void) sl_strlcpy(ftab[j].data_str,
	483	_("00-00-0000 00:00:00"), 64);
	484	}
	485	else
	486	{
	487	(void) sl_strlcpy(ftab[j].data_str,
	488	_("(None)"), 64);
	489	}
	490	isiz = sl_strlen(ftab[j].data_str);
[34]	491	if (isiz > 0 && sl_ok_adds(size, isiz))
[1]	492	{
	493	size += isiz;
	494	clist[nn] = ftab[j].data_str;
	495	++nn;
	496	}
	497	else
	498	*q = '%';
[13]	499	goto endsrch;
[1]	500	}
[13]	501	break;
[1]	502
[13]	503	default:
	504	/* do nothing */;
	505	}
	506
[1]	507	}
[13]	508	++j;
[1]	509	}
	510
[13]	511	endsrch:
	512
	513	p = q;
	514
[1]	515	/* -- not found -- */
	516	if (i == 0)
	517	{
	518	*q = '%';
	519	++p;
	520	}
[13]	521
[1]	522	}
	523
	524	/* -- Format string evaluated.
	525	clist[] List of strings
	526	size Total size of format string + clist[] strings
	527	-- */
	528
	529	/* -- closing '\0' --
	530	*/
[34]	531	if (sl_ok_adds(size, 1))
	532	size++;
[1]	533	outstr = (char *) SH_ALLOC(size);
	534
	535	/* -- print it --
	536	*/
	537	(void) sl_snprintf( outstr, size, fmt,
	538	clist[0], clist[1], clist[2], clist[3],
	539	clist[4], clist[5], clist[6], clist[7],
	540	clist[8], clist[9], clist[10], clist[11],
	541	clist[12], clist[13], clist[14], clist[15]);
[34]	542	outstr[size-1] = '\0';
	543
[1]	544	/* -- cleanup --
	545	*/
	546	j = 0;
[13]	547	while (ftab[j].fchar != '\0') {
	548	if (ftab[j].type != S_FMT_STRING && ftab[j].data_str != NULL)
	549	SH_FREE(ftab[j].data_str);
	550	++j;
	551	}
[1]	552	SH_FREE(fmt);
	553
	554	SL_RETURN(outstr, _("sh_util_formatted"));
	555	}
	556
[93]	557	/* read a hexchar, return int value (0-15)
	558	* can't inline (AIX)
[1]	559	*/
[12]	560	int sh_util_hexchar( const char c )
[1]	561	{
	562	/@+charint@/
	563	if ( c >= '0' && c <= '9' )
	564	return c - '0';
	565	else if ( c >= 'a' && c <= 'f' )
	566	return c - 'a' + 10;
	567	else if ( c >= 'A' && c <= 'F' )
	568	return c - 'A' + 10;
	569	else return -1;
	570	/@-charint@/
	571	}
	572
[137]	573	char * sh_util_charhex( unsigned char i , char * i2h)
[93]	574	{
	575	int j, k;
	576
	577	j = i / 16;
	578	k = i - (j*16);
	579
	580	if (j < 10) i2h[0] = '0'+j;
	581	else i2h[0] = 'A'+(j-10);
	582
	583	if (k < 10) i2h[1] = '0'+k;
	584	else i2h[1] = 'A'+(k-10);
	585
	586	return i2h;
	587	}
	588
[1]	589	/* read a hexadecimal key, convert to binary
	590	*/
[12]	591	int sh_util_hextobinary (char * binary, const char * hex, int bytes)
[1]	592	{
	593	int i = 0, j, k, l = 0;
[13]	594	char c;
[1]	595
[13]	596	#define SH_HEXCHAR(x, y) \
	597	c = (x); \
	598	if ( c >= '0' && c <= '9' ) \
	599	y = c - '0'; \
	600	else if ( c >= 'a' && c <= 'f' ) \
	601	y = c - 'a' + 10; \
	602	else if ( c >= 'A' && c <= 'F' ) \
	603	y = c - 'A' + 10; \
	604	else \
	605	SL_RETURN((-1), _("sh_util_hextobinary"))
	606
	607
[1]	608	SL_ENTER(_("sh_util_hextobinary"));
	609
[34]	610	if (bytes < 2)
	611	SL_RETURN((-1), _("sh_util_hextobinary"));
	612
	613	while (i < (bytes-1))
[1]	614	{
[13]	615	SH_HEXCHAR(hex[i], k);
	616	SH_HEXCHAR(hex[i+1], j);
	617
	618	binary[l] = (char)(k * 16 + j);
	619	++l; i+= 2;
[1]	620	}
	621
	622	SL_RETURN((0), _("sh_util_hextobinary"));
	623	}
	624
	625	static void copy_four (unsigned char * dest, UINT32 in)
	626	{
	627	UINT32 i, j;
	628	int count;
	629
	630	SL_ENTER(_("copy_four"));
	631	for (count = 0; count < 4; ++count)
	632	{
	633	i = in / 256;
	634	j = in - (i*256);
	635	dest[count] = (unsigned char) j;
	636	in = i;
	637	}
	638	SL_RET0(_("copy_four"));
	639	}
	640
	641	/* compute HMAC-TIGER
	642	*/
	643	static char * sh_util_hmac_tiger (char * hexkey,
[133]	644	char * text, size_t textlen,
	645	char * res, size_t len)
[1]	646	{
	647	static char opad[KEY_BLOCK] = {
	648	(char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C,
	649	(char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C,
	650	(char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C,
	651	(char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C
	652	};
	653	static char ipad[KEY_BLOCK] = {
	654	(char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36,
	655	(char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36,
	656	(char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36,
	657	(char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36
	658	};
[11]	659	static char zap[KEY_BLOCK] = {
	660	(char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00,
	661	(char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00,
	662	(char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00,
	663	(char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00
	664	};
[1]	665	char K[KEY_BLOCK];
	666	char outer[KEY_BLOCK];
	667	char * inner;
	668	UINT32 * h1;
	669	UINT32 * h2;
	670	UINT32 cc[KEY_LEN/4];
[133]	671	UINT32 kbuf[KEY_BYT/sizeof(UINT32)];
	672	char hashbuf[KEYBUF_SIZE];
[1]	673
[133]	674
[1]	675	size_t i;
	676
	677	SL_ENTER(_("sh_util_hmac_tiger"));
	678	ASSERT((KEY_BLOCK <= (KEY_LEN/2)), _("KEY_BLOCK <= (KEY_LEN/2)"))
	679
	680	if (KEY_BLOCK > (KEY_LEN/2))
	681	{
[137]	682	(void) sh_tiger_hash (NULL, TIGER_DATA, 0, hashbuf, sizeof(hashbuf));
	683	sl_strlcpy(res, hashbuf, len);
[1]	684	SL_RETURN(res, _("sh_util_hmac_tiger"));
	685	}
	686
[11]	687	memcpy (K, zap, KEY_BLOCK);
[1]	688
	689	if (sh_util_hextobinary (K, hexkey, KEY_LEN) < 0)
	690	{
[137]	691	(void) sh_tiger_hash (NULL, TIGER_DATA, 0, hashbuf, sizeof(hashbuf));
	692	sl_strlcpy(res, hashbuf, len);
[1]	693	SL_RETURN(res, _("sh_util_hmac_tiger"));
	694	}
	695
[34]	696	if (sl_ok_adds(textlen, KEY_BLOCK))
	697	{
	698	inner = (char *) SH_ALLOC (textlen + KEY_BLOCK);
[1]	699
[34]	700	for (i = 0; i < KEY_BLOCK; ++i)
	701	{
	702	outer[i] = K[i] ^ opad[i];
	703	inner[i] = K[i] ^ ipad[i];
	704	}
	705	for (i = KEY_BLOCK; i < (KEY_BLOCK+textlen); ++i)
	706	{
	707	inner[i] = text[i - KEY_BLOCK];
	708	}
[1]	709	}
[34]	710	else
[1]	711	{
[34]	712	sh_error_handle((-1), FIL__, __LINE__, -1, MSG_E_SUBGEN,
	713	_("integer overflow"),
	714	_("sh_util_hmac_tiger"));
[137]	715	(void) sh_tiger_hash (NULL, TIGER_DATA, 0, hashbuf, sizeof(hashbuf));
	716	sl_strlcpy(res, hashbuf, len);
[34]	717	SL_RETURN(res, _("sh_util_hmac_tiger"));
[1]	718	}
	719
	720	/* now compute the hash
	721	*/
	722	h1 = sh_tiger_hash_uint32 ( outer,
	723	TIGER_DATA,
[133]	724	KEY_BLOCK,
	725	kbuf, KEY_BYT/sizeof(UINT32));
[1]	726	for (i = 0; i < (KEY_LEN/8); ++i)
	727	{
	728	/* cc[i] = h1[i]; */
	729	copy_four ( (unsigned char *) &(cc[i]), h1[i]);
	730	}
	731
	732	h2 = sh_tiger_hash_uint32 ( inner,
	733	TIGER_DATA,
[133]	734	(unsigned long) KEY_BLOCK+textlen,
	735	kbuf, KEY_BYT/sizeof(UINT32));
[1]	736	for (i = KEY_LEN/8; i < (KEY_LEN/4); ++i)
	737	{
	738	copy_four ( (unsigned char *) &(cc[i]), h2[i - (KEY_LEN/8)]);
	739	/* cc[i] = h2[i - (KEY_LEN/8)]; */
	740	}
	741	SH_FREE(inner);
	742
[133]	743	(void) sh_tiger_hash ((char *) &cc[0],
	744	TIGER_DATA,
	745	(unsigned long) (KEY_LEN/4 * sizeof(UINT32)),
	746	hashbuf, sizeof(hashbuf));
[1]	747
[133]	748	sl_strlcpy(res, hashbuf, len);
[1]	749	SL_RETURN(res, _("sh_util_hmac_tiger"));
	750	}
	751
	752	static char * sh_util_hash_tiger ( char * hexkey,
[137]	753	char * text, size_t textlen,
[133]	754	char * res, size_t len)
[1]	755	{
	756	char h2[2*KEY_LEN+1];
[137]	757	char hashbuf[KEYBUF_SIZE];
	758
[1]	759	SL_ENTER(_("sh_util_hash_tiger"));
	760
	761	(void) sl_strlcpy(h2, hexkey, KEY_LEN+1);
[133]	762	(void) sl_strlcat(h2,
	763	sh_tiger_hash(text, TIGER_DATA,
	764	(unsigned long) textlen,
	765	hashbuf, sizeof(hashbuf)),
[137]	766	2*KEY_LEN+1
[133]	767	);
[1]	768
[133]	769	(void) sh_tiger_hash(h2, TIGER_DATA, 2*KEY_LEN, hashbuf, sizeof(hashbuf));
[1]	770
[133]	771	sl_strlcpy(res, hashbuf, len);
[1]	772	SL_RETURN(res, _("sh_util_hash_tiger"));
	773	}
	774
	775	/* --- compute signature on data ---
	776	*/
	777	#define TYPE_HMAC 0
	778	#define TYPE_HASH 1
	779
	780	static int sigtype = TYPE_HMAC;
	781
[22]	782	int sh_util_sigtype (const char * c)
[1]	783	{
	784	SL_ENTER(_("sh_util_sigtype"));
	785	if (c == NULL)
	786	SL_RETURN( -1, _("sh_util_sigtype"));
	787
	788	if (0 == strcmp(_("HMAC-TIGER"), c))
	789	sigtype = TYPE_HMAC;
	790	else if (0 == strcmp(_("HASH-TIGER"), c))
	791	sigtype = TYPE_HASH;
	792	else
	793	SL_RETURN( -1, _("sh_util_sigtype"));
	794
	795	SL_RETURN( 0, _("sh_util_sigtype"));
	796	}
	797
	798	char * sh_util_siggen (char * hexkey,
[133]	799	char * text, size_t textlen,
	800	char * res, size_t len)
[1]	801	{
	802	char * p;
	803
	804	SL_ENTER(_("sh_util_siggen"));
	805	if (sigtype == TYPE_HMAC)
	806	p = sh_util_hmac_tiger (hexkey,
[133]	807	text, textlen, res, len);
[1]	808	else
	809	p = sh_util_hash_tiger (hexkey,
[133]	810	text, textlen, res, len);
[1]	811	SL_RETURN(p, _("sh_util_siggen"));
	812	}
	813
	814
	815	/* a simple compressor
	816	*/
	817	long sh_util_compress (char * dest, char * src, size_t dest_size)
	818	{
	819	char * add;
	820	char * get;
	821	size_t count = 0;
	822	size_t dest_end;
	823
	824	SL_ENTER(_("sh_util_compress"));
	825
	826	if (dest_size == 0)
	827	SL_RETURN((0), _("sh_util_compress"));
	828
	829	if ((dest == NULL) \|\| (src == NULL))
	830	SL_RETURN((0), _("sh_util_compress"));
	831
	832	dest_end = sl_strlen(dest);
	833
	834	if (dest_end > dest_size)
	835	SL_RETURN((0), _("sh_util_compress"));
	836
	837	add = &dest[dest_end];
	838	get = src;
	839
	840	while (count < (dest_size-dest_end))
	841	{
	842	if (isalnum((int) *get))
	843	{
	844	add = get;
	845	++add;
	846	++count;
	847	}
	848	++get;
	849	if (*get == '\0' && (count < (dest_size-dest_end)))
	850	/* end of src reached */
	851	{
	852	add = get; /* copy the '\0' */
	853	break; /* and stop copying */
	854	}
	855	}
	856
	857	dest[dest_size-1] = '\0'; /* paranoia */
	858	SL_RETURN(((long)count), _("sh_util_compress")); /* no of chars copied */
	859	}
	860
	861
	862	/* copy the four least significant bytes
	863	*/
	864	void sh_util_cpylong (char * dest, const char * src, int len )
	865	{
	866	int i, j;
	867	union
	868	{
	869	long l;
	870	char c[sizeof(long)];
	871	} u;
	872
	873	SL_ENTER(_("sh_util_cpylong"));
	874
	875	u.l = 1;
	876
	877	/* MSB is first
	878	*/
	879	if (sizeof(long)>4 &&/@+charint@/(u.c[sizeof(long)-1] == 1)/@-charint@/)
	880	{
	881	j = (int) (sizeof(long)-4);
	882	for (i = 0; i < j; ++i) ++src;
	883	}
	884
	885	i = 0;
	886
	887	while (i < 4)
	888	{
	889	dest = (src);
	890	++dest; ++src;
	891	if (i == (len-1)) break;
	892	++i;
	893	}
	894	SL_RET0(_("sh_util_cpylong"));
	895	}
	896
	897	/* This is a maximally equidistributed combined Tausworthe
	898	* generator. The sequence is,
	899	*
	900	* x_n = (s1_n ^ s2_n ^ s3_n)
	901	*
	902	* s1_{n+1} = (((s1_n & 4294967294) <<12) ^ (((s1_n <<13) ^ s1_n) >>19))
	903	* s2_{n+1} = (((s2_n & 4294967288) << 4) ^ (((s2_n << 2) ^ s2_n) >>25))
	904	* s3_{n+1} = (((s3_n & 4294967280) <<17) ^ (((s3_n << 3) ^ s3_n) >>11))
	905	*
	906	* computed modulo 2^32. In the three formulas above '^' means
	907	* exclusive-or (C-notation), not exponentiation. Note that the
	908	* algorithm relies on the properties of 32-bit unsigned integers (it
	909	* is formally defined on bit-vectors of length 32).
	910	*
	911	* Stolen from GSL (GNU scientific library) and modified somewhat.
	912	* I am using UINT32, which is guaranteed to be 32 bits. Also made
	913	* sure that the initialization vector is valid.
	914	*/
	915
	916
	917	/* interval [0, 4294967296]
	918	*/
	919	static UINT32 taus_get_long (void *vstate)
	920	{
	921	UINT32 * state = (UINT32 *) vstate;
	922
[137]	923	/*
[1]	924	if (skey->rngI == BAD)
	925	(void)taus_seed();
[137]	926	*/
[1]	927
	928	#define TAUSWORTHE(s,a,b,c,d) ((s &c) <<d) ^ (((s <<a) ^s) >>b)
	929	/@+ignorequals@/
	930	state[0] = TAUSWORTHE (state[0], 13, 19, 4294967294UL, 12);
	931	state[1] = TAUSWORTHE (state[1], 2, 25, 4294967288UL, 4);
	932	state[2] = TAUSWORTHE (state[2], 3, 11, 4294967280UL, 17);
	933	/@-ignorequals@/
	934	return (state[0] ^ state[1] ^ state[2]);
	935	}
	936
	937	/* Hide the internal state of the PRNG by using its output as
	938	* input for a one-way hash function.
	939	*/
[11]	940
[137]	941	UINT32 taus_get ()
[1]	942	{
[137]	943	UINT32 taus_svec[6];
[1]	944	UINT32 retval;
	945	UINT32 * res;
[13]	946	static UINT32 res_vec[6];
	947	static int res_num = 0;
[1]	948	register int i;
[133]	949	UINT32 kbuf[KEY_BYT/sizeof(UINT32)];
[1]	950
[137]	951	SH_MUTEX_LOCK_UNSAFE(mutex_skey);
[13]	952	if (res_num > 0)
	953	{
	954	retval = res_vec[res_num];
	955	res_num = (res_num == 5) ? 0 : (res_num + 1);
[137]	956	SH_MUTEX_UNLOCK_UNSAFE(mutex_skey); /* alternative path */
[13]	957	return retval;
	958	}
[137]	959	SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
[13]	960
[137]	961	(void)taus_seed();
[1]	962
[137]	963	SH_MUTEX_LOCK_UNSAFE(mutex_skey);
	964	taus_svec[0] = taus_get_long (&(skey->rng0[0]));
	965	taus_svec[1] = taus_get_long (&(skey->rng1[0]));
	966	taus_svec[2] = taus_get_long (&(skey->rng2[2]));
	967	taus_svec[3] = taus_get_long (&(skey->rng0[0]));
	968	taus_svec[4] = taus_get_long (&(skey->rng1[0]));
	969	taus_svec[5] = taus_get_long (&(skey->rng2[0]));
	970	SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
	971
[11]	972	res = sh_tiger_hash_uint32 ( (char *) &taus_svec[0],
[1]	973	TIGER_DATA,
[133]	974	(unsigned long)(6 * sizeof(UINT32)),
	975	kbuf, KEY_BYT/sizeof(UINT32));
[1]	976
[137]	977	SH_MUTEX_LOCK_UNSAFE(mutex_skey);
[13]	978	for (i = 1; i < 6; ++i)
[11]	979	{
[13]	980	res_vec[i] = res[i];
[11]	981	}
[13]	982	retval = taus_svec[0];
	983	res_num = 1;
[137]	984	SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
[1]	985
[11]	986	taus_svec[0] = 0; taus_svec[1] = 0; taus_svec[2] = 0;
	987	taus_svec[3] = 0; taus_svec[4] = 0; taus_svec[5] = 0;
[1]	988
	989	return retval;
	990	}
	991
	992	/* interval [0,1)
	993	*/
	994	double taus_get_double (void *vstate)
	995	{
	996	return taus_get_long (vstate) / (4294967296.0 + 1.0) ;
	997	}
	998
	999	#define LCG(n) ((69069 * n) & 0xffffffffUL)
	1000
	1001	/* TAKE CARE: state[0], state[1], state[2] must be > 2,8,16, respectively
	1002	*/
	1003	static void taus_set_from_ulong (void *vstate, unsigned long int s)
	1004	{
	1005	UINT32 state = (UINT32 ) vstate;
	1006
	1007	if (s == 0)
	1008	s = 1; /* default seed is 1 */
	1009
	1010	state[0] = (UINT32)(LCG (s) \| (UINT32) 0x03);
	1011	state[1] = (UINT32)(LCG (state[0]) \| (UINT32) 0x09);
	1012	state[2] = (UINT32)(LCG (state[1]) \| (UINT32) 0x17);
	1013
	1014	/* 'warm up'
	1015	*/
	1016	(void) taus_get_long (state);
	1017	(void) taus_get_long (state);
	1018	(void) taus_get_long (state);
	1019	(void) taus_get_long (state);
	1020	(void) taus_get_long (state);
	1021	(void) taus_get_long (state);
	1022
	1023	return;
	1024	}
	1025
	1026	static void taus_set_from_state (void vstate, void init_state)
	1027	{
	1028	UINT32 state = (UINT32 ) vstate;
	1029	UINT32 state0 = (UINT32 ) init_state;
	1030
	1031	state[0] = state0[0] \| (UINT32) 0x03;
	1032	state[1] = state0[1] \| (UINT32) 0x09;
	1033	state[2] = state0[2] \| (UINT32) 0x17;
	1034
	1035	return;
	1036	}
	1037
	1038
	1039	int taus_seed ()
	1040	{
	1041	char bufx[9 * sizeof(UINT32) + 1];
	1042	int status;
	1043	static unsigned long seed_time = 0;
[137]	1044	unsigned long gtime;
[1]	1045
	1046	SL_ENTER(_("taus_seed"));
	1047
	1048	if (skey->rngI == GOOD)
	1049	{
[137]	1050	if ( (sh_unix_longtime () - seed_time) < 7200)
[1]	1051	SL_RETURN( (0), _("taus_seed"));
	1052	}
	1053
	1054	seed_time = sh_unix_longtime ();
	1055
	1056	status = sh_entropy (24, bufx);
	1057
	1058	if (!SL_ISERROR(status))
	1059	{
[137]	1060	SH_MUTEX_LOCK_UNSAFE(mutex_skey);
[1]	1061	memcpy (&skey->rng0[0], &bufx[0], 2*sizeof(UINT32));
	1062	memcpy (&skey->rng1[0], &bufx[2sizeof(UINT32)], 2sizeof(UINT32));
	1063	memcpy (&skey->rng2[0], &bufx[4sizeof(UINT32)], 2sizeof(UINT32));
	1064	memset (bufx, 0, 9 * sizeof(UINT32) + 1);
	1065
	1066	skey->rng0[2] = 0;
	1067	skey->rng1[2] = 0;
	1068	skey->rng2[2] = 0;
	1069
	1070	taus_set_from_state( &(skey->rng0[0]), &(skey->rng0[0]));
	1071	taus_set_from_state( &(skey->rng1[0]), &(skey->rng1[0]));
	1072	taus_set_from_state( &(skey->rng2[0]), &(skey->rng2[0]));
	1073
[137]	1074	skey->rngI = GOOD;
	1075	SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
[1]	1076	SL_RETURN( (0), _("taus_seed"));
	1077	}
	1078
	1079	sh_error_handle ((-1), FIL__, __LINE__, status, MSG_ES_ENT,
	1080	_("sh_entropy"));
	1081
	1082	/* emergency backup - unsafe !
	1083	*/
	1084	#ifdef HAVE_GETTIMEOFDAY
[137]	1085	gtime = sh_unix_notime();
[1]	1086	#else
[137]	1087	gtime = seed_time;
[1]	1088	#endif
[137]	1089
	1090	SH_MUTEX_LOCK_UNSAFE(mutex_skey);
	1091	taus_set_from_ulong ( &(skey->rng0[0]), LCG (gtime) );
[1]	1092	taus_set_from_ulong ( &(skey->rng1[0]), LCG (skey->rng0[0]) );
	1093	taus_set_from_ulong ( &(skey->rng2[0]), LCG (skey->rng1[0]) );
	1094	skey->rngI = BAD;
[137]	1095	SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
[1]	1096
	1097	SL_RETURN( (-1), _("taus_seed"));
	1098	}
	1099
	1100	/@+charint@/
	1101	static unsigned char new_key[] = { 0xA7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xA7 };
	1102	/@-charint@/
	1103	static void copy_four (unsigned char * dest, UINT32 in);
	1104
[20]	1105	int sh_util_set_newkey (const char * new_in)
[1]	1106	{
	1107	size_t i, j = 0;
	1108	size_t len;
	1109	SL_TICKET fp;
	1110	SL_TICKET fout;
	1111	char * key;
	1112	char * path;
[22]	1113	char * outpath = NULL;
[1]	1114	unsigned char * image = NULL;
	1115	long s = 0;
	1116	long ilen = 0;
	1117	long ii, k = 0;
	1118	UINT32 * h1;
[22]	1119	char * new = NULL;
[1]	1120
	1121	if (0 != sl_is_suid())
	1122	{
	1123	fprintf(stderr, _("ERROR: insufficient privilege\n"));
	1124	_exit (EXIT_FAILURE);
	1125	/@notreached@/
	1126	return -1; /* braindead MAC OSX compiler needs this */
	1127	}
	1128
[20]	1129	if (new_in == NULL \|\| new_in[0] == '\0')
[1]	1130	{
	1131	fprintf(stderr,
	1132	_("ERROR: no key given\n Argument must be 'key@path'\n"));
	1133	_exit (EXIT_FAILURE);
	1134	/@notreached@/
	1135	return -1;
	1136	}
[20]	1137
	1138	if (NULL == (new = malloc(strlen(new_in) + 1)))
	1139	goto bail_mem;
	1140	sl_strncpy(new, new_in, strlen(new_in) + 1);
	1141
[1]	1142	key = new;
	1143	len = strlen(new);
	1144	for (i = 1; i < (len-2); ++i)
	1145	{
	1146	if (new[i] == '@' && new[i+1] == '/')
	1147	{
	1148	j = i+1; new[i] = '\0'; break;
	1149	}
	1150	}
	1151	if (j == 0)
	1152	{
	1153	fprintf(stderr,
	1154	_("ERROR: no path to executable given\n Argument must be 'key@path'\n"));
[22]	1155	free(new);
[1]	1156	_exit (EXIT_FAILURE);
	1157	/@notreached@/
	1158	return -1;
	1159	}
	1160	else
	1161	path = &new[j];
[22]	1162
	1163	len = strlen(path) + 1 + 4;
[1]	1164	/@-usedef@/
[22]	1165	if (NULL == (outpath = malloc(len)))
[1]	1166	goto bail_mem;
	1167	/@-usedef@/
[22]	1168	sl_snprintf (outpath, len, _("%s.out"), path);
[1]	1169
	1170	fp = sl_open_read(path, SL_NOPRIV);
	1171	if (SL_ISERROR(fp))
	1172	{
	1173	fprintf(stderr,
	1174	_("ERROR: cannot open %s for read (errnum = %ld)\n"), path, fp);
[22]	1175	free(new); free (outpath);
[1]	1176	_exit (EXIT_FAILURE);
	1177	/@notreached@/
	1178	return -1;
	1179	}
	1180
	1181	fout = sl_open_write(outpath, SL_NOPRIV);
	1182	if (SL_ISERROR(fout))
	1183	{
	1184	fprintf(stderr,
	1185	_("ERROR: cannot open %s (errnum = %ld)\n"), outpath, fout);
[22]	1186	free(new); free (outpath);
[1]	1187	_exit (EXIT_FAILURE);
	1188	/@notreached@/
	1189	return -1;
	1190	}
	1191
	1192
	1193	image = malloc (4096);
	1194	if (!image)
	1195	goto bail_mem;
	1196	while (0 < (ii = sl_read (fp, &image[s], 4096)))
	1197	{
	1198	ilen += ii;
	1199	s += 4096;
	1200	image = realloc (image, (size_t) (4096 + s));
	1201	if (!image)
	1202	goto bail_mem;
	1203	}
	1204
	1205	printf(_("%ld bytes read\n"), ilen);
	1206
	1207
	1208	for (k = 0; k < (ilen - 8); ++k)
	1209	{
	1210	if (image[k] == new_key[0] &&
	1211	image[k+1] == new_key[1] &&
	1212	image[k+2] == new_key[2] &&
	1213	image[k+3] == new_key[3] &&
	1214	image[k+4] == new_key[4] &&
	1215	image[k+5] == new_key[5] &&
	1216	image[k+6] == new_key[6] &&
	1217	image[k+7] == new_key[7])
	1218	{
[133]	1219	UINT32 kbuf[KEY_BYT/sizeof(UINT32)];
	1220
[1]	1221	printf(_("old key found\n"));
	1222	h1 = sh_tiger_hash_uint32 (key, TIGER_DATA,
[133]	1223	(unsigned long)strlen(key),
	1224	kbuf, KEY_BYT/sizeof(UINT32));
[1]	1225	copy_four( (unsigned char *) &(image[k]), h1[0]);
	1226	copy_four( (unsigned char *) &(image[k+4]), h1[1]);
	1227	(void) sl_write (fout, image, ilen);
	1228	(void) sl_close (fout);
	1229	printf(_("new file %s written\n"), outpath);
[22]	1230	free(new); free (outpath); free(image);
[1]	1231	_exit (EXIT_SUCCESS);
	1232	/@notreached@/
	1233	return 0;
	1234	}
	1235	}
	1236
	1237	fprintf(stderr,
	1238	_("ERROR: old key not found\n"));
[22]	1239	free(new); free (outpath); free(image);
[1]	1240	_exit (EXIT_FAILURE);
	1241	/@notreached@/
	1242	return -1;
	1243
	1244
	1245	bail_mem:
	1246	fprintf(stderr,
	1247	_("ERROR: out of memory\n"));
[22]	1248	if (new) free(new);
	1249	if (outpath) free (outpath);
	1250	if (image) free (image);
[1]	1251	_exit (EXIT_FAILURE);
	1252	/@notreached@/
	1253	return -1;
	1254	}
	1255
	1256
	1257
	1258
	1259	/* A simple en-/decoder, based on Vernam cipher. We use the
	1260	* message as salt to hide the key by obtaining a different one-time
	1261	* pad each time.
	1262	* Should be safe against a listener on the network, but not against someone
	1263	* with read access to the binary.
	1264	*/
	1265	void sh_util_encode (char * data, char * salt, int mode, char fill)
	1266	{
	1267	static char cc1[17] = N_("0123456789ABCDEF");
	1268	char cc[17] = "\0";
	1269	register int i, j, j1 = 0, j2 = 0, j3;
	1270	char * dez;
[133]	1271	char hashbuf[KEYBUF_SIZE];
[1]	1272
	1273	SL_ENTER(_("sh_util_encode"));
	1274
	1275	/* init
	1276	*/
	1277	(void) sl_strlcpy( cc, _(cc1), sizeof(cc));
	1278
	1279	/* max 128 bits keyspace
	1280	*/
	1281	memset (skey->vernam, (int)fill, KEY_LEN+1);
	1282
	1283	dez = (char *) &(skey->ErrFlag[0]);
	1284	sh_util_cpylong (skey->vernam, dez, 4);
	1285	dez = (char *) &(skey->ErrFlag[1]);
	1286	sh_util_cpylong (&skey->vernam[4], dez, 4);
	1287
	1288	skey->vernam[KEY_LEN] = '\0';
	1289
	1290	(void) sl_strlcpy(skey->vernam,
[133]	1291	sh_tiger_hash(skey->vernam, TIGER_DATA, KEY_LEN,
	1292	hashbuf, sizeof(hashbuf)),
[1]	1293	KEY_LEN+1);
	1294
	1295	(void) sl_strlcpy(skey->vernam,
[133]	1296	sh_util_hmac_tiger (skey->vernam, salt, strlen(salt),
	1297	hashbuf, sizeof(hashbuf)),
	1298	KEY_LEN+1);
[1]	1299
	1300	(void) sl_strlcpy(skey->vernam,
[133]	1301	sh_util_hmac_tiger (skey->vernam, (char*) new_key, 8,
	1302	hashbuf, sizeof(hashbuf)),
[1]	1303	KEY_LEN+1);
	1304
	1305	/* The following routine adds/subtracts data[j] and vernam[j] mod 16.
	1306	*/
	1307	j = 0;
	1308	while (j < KEY_LEN)
	1309	{
	1310	for (i = 0; i < 16; ++i)
	1311	{
	1312	if (cc[i] == data[j]) j1 = i;
	1313	if (cc[i] == skey->vernam[j]) j2 = i;
	1314	}
	1315	if (mode == 0)
	1316	{
	1317	j3 = j1 + j2;
	1318	if (j3 > 15) j3 -= 16;
	1319	data[j] = cc[j3];
	1320	}
	1321	else
	1322	{
	1323	j3 = j1 - j2;
	1324	if (j3 < 0) j3 += 16;
	1325	data[j] = cc[j3];
	1326	}
	1327	++j;
	1328	}
	1329	SL_RET0(_("sh_util_encode"));
	1330	}
	1331
	1332	/* server mode
	1333	*/
[20]	1334	int sh_util_setserver (const char * dummy)
[1]	1335	{
	1336	SL_ENTER(_("sh_util_setserver"));
	1337
[20]	1338	(void) dummy;
	1339	sh.flag.isserver = GOOD;
[1]	1340	SL_RETURN((0),_("sh_util_setserver"));
	1341	}
	1342
	1343
[20]	1344	int sh_util_setlooptime (const char * str)
[1]	1345	{
	1346	int i = atoi (str);
	1347
	1348	SL_ENTER(_("sh_util_setlooptime"));
	1349
	1350	if (i >= 0 && i < INT_MAX) {
	1351	sh.looptime = i;
	1352	SL_RETURN((0),_("sh_util_setlooptime"));
	1353	} else {
	1354	sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
	1355	_("loop time"), str);
	1356	SL_RETURN((-1),_("sh_util_setlooptime"));
	1357	}
	1358	}
	1359
	1360	#if defined (SH_WITH_CLIENT) \|\| defined (SH_STANDALONE)
[20]	1361	int sh_util_setchecksum (const char * str)
[1]	1362	{
	1363	static int reject = 0;
	1364
	1365	SL_ENTER(_("sh_util_setchecksum"));
	1366
	1367	if (reject == 1)
	1368	SL_RETURN((0), _("sh_util_setchecksum"));
	1369	reject = 1;
	1370
	1371	if (sl_strncmp (str, _("init"), sizeof("init")-1) == 0)
	1372	{
	1373	sh.flag.checkSum = SH_CHECK_INIT;
	1374	}
	1375	else if (sl_strncmp (str, _("update"), sizeof("update")-1) == 0)
	1376	{
	1377	if (S_TRUE == file_is_remote())
	1378	{
	1379	sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
	1380	_("checksum testing"), str);
	1381	SL_RETURN((-1), _("sh_util_setchecksum"));
	1382	}
	1383	else
	1384	{
	1385	sh.flag.checkSum = SH_CHECK_CHECK;
	1386	sh.flag.update = S_TRUE;
	1387	}
	1388	}
	1389	else if (sl_strncmp (str, _("check"), sizeof("check")-1) == 0)
	1390	{
	1391	sh.flag.checkSum = SH_CHECK_CHECK;
	1392	}
	1393	/*
	1394	else if (sl_strncmp (str, _("update"), sizeof("update")-1) == 0)
	1395	{
	1396	sh.flag.checkSum = SH_CHECK_INIT;
	1397	sh.flag.update = S_TRUE;
	1398	}
	1399	*/
	1400	else if (sl_strncmp (str, _("none"), sizeof("none")-1) == 0)
	1401	{
	1402	sh.flag.checkSum = SH_CHECK_NONE;
	1403	}
	1404	else
	1405	{
	1406	sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
	1407	_("checksum testing"), str);
	1408	SL_RETURN((-1), _("sh_util_setchecksum"));
	1409	}
	1410	SL_RETURN((0), _("sh_util_setchecksum"));
	1411	}
	1412	#endif
	1413
	1414	/@+charint@/
	1415	unsigned char TcpFlag[8][PW_LEN+1] = {
	1416	#if (POS_TF == 1)
	1417	{ 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
	1418	#endif
	1419	{ 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
	1420	#if (POS_TF == 2)
	1421	{ 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
	1422	#endif
	1423	{ 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
	1424	#if (POS_TF == 3)
	1425	{ 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
	1426	#endif
	1427	{ 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
	1428	#if (POS_TF == 4)
	1429	{ 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
	1430	#endif
	1431	{ 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
	1432	#if (POS_TF == 5)
	1433	{ 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
	1434	#endif
	1435	{ 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
	1436	#if (POS_TF == 6)
	1437	{ 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
	1438	#endif
	1439	{ 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
	1440	#if (POS_TF == 7)
	1441	{ 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
	1442	#endif
	1443	{ 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
	1444	#if (POS_TF == 8)
	1445	{ 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
	1446	#endif
	1447	};
	1448	/@-charint@/
	1449
	1450	/* initialize a key to a random value
	1451	* rev 0.8
	1452	*/
	1453	int sh_util_keyinit (char * buf, long size)
	1454	{
	1455	UINT32 bufy[6];
	1456	int i;
	1457	int status = 0;
	1458	char * p;
[133]	1459	char hashbuf[KEYBUF_SIZE];
[1]	1460
	1461	SL_ENTER(_("sh_util_keyinit"));
	1462
	1463	ASSERT((size <= KEY_LEN+1), _("size <= KEY_LEN+1"))
	1464
	1465	if (size > KEY_LEN+1)
	1466	size = KEY_LEN+1;
	1467
	1468	/* seed / re-seed the PRNG if required
	1469	*/
	1470	status = taus_seed ();
	1471
	1472	if (status == -1)
	1473	sh_error_handle ((-1), FIL__, __LINE__, -1, MSG_ES_KEY1,
	1474	_("taus_seed"));
	1475
	1476	for (i = 0; i < 6; ++i)
	1477	bufy[i] = taus_get(&(skey->rng0[0]), &(skey->rng1[0]), &(skey->rng2[0]));
	1478
	1479	p = sh_tiger_hash ((char *) bufy, TIGER_DATA,
[133]	1480	(unsigned long)(6*sizeof(UINT32)),
	1481	hashbuf, sizeof(hashbuf));
[1]	1482
	1483	i = sl_strlcpy(buf, p, (size_t)size);
	1484
	1485	memset (bufy, 0, 6*sizeof(UINT32));
	1486
	1487	if ((status == 0) && (!SL_ISERROR(i)) )
	1488	SL_RETURN((0),_("sh_util_keyinit"));
	1489
	1490	if (SL_ISERROR(i))
	1491	sh_error_handle ((-1), FIL__, __LINE__, i, MSG_ES_KEY2,
	1492	_("sl_strlcpy"));
	1493
	1494	SL_RETURN((-1),_("sh_util_keyinit"));
	1495	}
	1496
	1497	#if defined(SH_WITH_CLIENT) \|\| defined(SH_STANDALONE)
	1498
	1499	static unsigned char sh_obscure_index[256];
[76]	1500	static int sh_obscure_no_check = S_FALSE;
[1]	1501
[68]	1502	int sh_util_valid_utf8 (const unsigned char * str)
	1503	{
[76]	1504	const int sh_val_utf8_1 = 1;
	1505	const int sh_val_utf8_2 = 2;
	1506	const int sh_val_utf8_3 = 3;
	1507	const int sh_val_utf8_4 = 4;
	1508
[68]	1509	size_t len = strlen((char *)str);
	1510	size_t l = 0;
[76]	1511	int typ = 0;
	1512	unsigned char c = '\0';
	1513	unsigned char c2[2] = { 0x00, 0x00 };
	1514	unsigned char c3[3] = { 0x00, 0x00, 0x00 };
[68]	1515
[76]	1516
[68]	1517	#define SH_VAL_UTF8_1 ((c != '\0') && ((c & 0x80) == 0x00))
	1518	#define SH_VAL_UTF8_2 ((c != '\0') && ((c & 0xE0) == 0xC0)) /* 110x xxxx */
	1519	#define SH_VAL_UTF8_3 ((c != '\0') && ((c & 0xF0) == 0xE0)) /* 1110 xxxx */
	1520	#define SH_VAL_UTF8_4 ((c != '\0') && ((c & 0xF8) == 0xF0)) /* 1111 0xxx */
	1521	#define SH_VAL_UTF8_N ((c != '\0') && ((c & 0xC0) == 0x80)) /* 10xx xxxx */
[76]	1522	#define SH_VAL_BAD ((c == '"') \|\| (c == '\t') \|\| (c == '\b') \|\| \
	1523	(c == '\f') \|\| (c == '\n') \|\| \
[68]	1524	(c == '\r') \|\| (c == '\v') \|\| iscntrl((int) c) \|\| \
	1525	(c != ' ' && !isgraph ((int) c)))
	1526
	1527	while(l < len)
	1528	{
	1529	c = str[l];
	1530
	1531	if (SH_VAL_UTF8_1)
	1532	{
[76]	1533	if (!(SH_VAL_BAD && (sh_obscure_index[c] != 1)))
	1534	{
	1535	typ = sh_val_utf8_1;
	1536	++l; continue;
	1537	}
	1538	else
	1539	{
	1540	return S_FALSE;
	1541	}
[68]	1542	}
	1543	else if (SH_VAL_UTF8_2)
	1544	{
[76]	1545	typ = sh_val_utf8_2;
	1546	c2[0] = c;
	1547	if ((c & 0x3e) != 0x00) /* !(overlong 2-byte seq.) */
	1548	{
	1549	++l;
	1550	if (l != len) {
	1551	c = str[l];
	1552	if(SH_VAL_UTF8_N) {
	1553	c2[1] = c;
	1554	++l; continue;
	1555	}
	1556	else {
	1557	return S_FALSE;
	1558	}
	1559	}
	1560	else {
	1561	return S_FALSE;
	1562	}
	1563	}
	1564	else
	1565	{
	1566	return S_FALSE; /* overlong 2-byte seq. */
	1567	}
[68]	1568	}
	1569	else if (SH_VAL_UTF8_3)
	1570	{
[76]	1571	typ = sh_val_utf8_3;
	1572	c3[0] = c;
[68]	1573	++l; if (l == len) return S_FALSE; c = str[l];
	1574	if(!SH_VAL_UTF8_N) return S_FALSE;
	1575	if (((str[l-1] & 0x1F) == 0x00) && ((c & 0x60) == 0x00))
	1576	return S_FALSE; /* overlong 3-byte seq. */
[76]	1577	c3[1] = c;
[68]	1578	++l; if (l == len) return S_FALSE; c = str[l];
	1579	if(!SH_VAL_UTF8_N) return S_FALSE;
[76]	1580	c3[2] = c;
[68]	1581	++l; continue;
	1582	}
	1583	else if (SH_VAL_UTF8_4)
	1584	{
[76]	1585	typ = sh_val_utf8_4;
[68]	1586	++l; if (l == len) return S_FALSE; c = str[l];
	1587	if(!SH_VAL_UTF8_N) return S_FALSE;
	1588	if (((str[l-1] & 0x0F) == 0x00) && ((c & 0x70) == 0x00))
	1589	return S_FALSE; /* overlong 4-byte seq. */
	1590	++l; if (l == len) return S_FALSE; c = str[l];
	1591	if(!SH_VAL_UTF8_N) return S_FALSE;
	1592	++l; if (l == len) return S_FALSE; c = str[l];
	1593	if(!SH_VAL_UTF8_N) return S_FALSE;
	1594	++l; continue;
	1595	}
	1596	return S_FALSE;
	1597	}
[76]	1598
	1599	/* last character is invisible (space or else)
	1600	*/
	1601	if (typ == sh_val_utf8_1)
	1602	{
	1603	if (c != ' ')
	1604	return S_TRUE;
	1605	else
	1606	return S_FALSE;
	1607	}
	1608	else if (typ == sh_val_utf8_2)
	1609	{
	1610	if (c2[0] == 0xC2 && c2[1] == 0xA0) /* nbsp */
	1611	return S_FALSE;
	1612	else
	1613	return S_TRUE;
	1614	}
	1615	else if (typ == sh_val_utf8_3)
	1616	{
	1617	if (c3[0] == 0xE2)
	1618	{
	1619	if (c3[1] == 0x80 && c3[2] >= 0x80 && c3[2] <= 0x8F)
	1620	return S_FALSE; /* various spaces, left-to-right, right-to-left */
	1621	else if (c3[1] == 0x80 && (c3[2] == 0xA8 \|\| c3[2] == 0xA9 \|\|
	1622	c3[2] == 0xAD \|\| c3[2] == 0xAF))
	1623	return S_FALSE; /* line sep, para sep, zw word joiner, nnbsp */
	1624	else if (c3[1] == 0x81 && (c3[2] == 0xA0 \|\| c3[2] == 0xA1 \|\|
	1625	c3[2] == 0x9F))
	1626	return S_FALSE; /* word joiner, function app, math space */
	1627	else
	1628	return S_TRUE;
	1629	}
	1630	else if (c3[0] == 0xE3 && c3[1] == 0x80 && c3[2] == 0x80)
	1631	{
	1632	return S_FALSE; /* ideographic space */
	1633	}
	1634	else if (c3[0] == 0xEF && c3[1] == 0xBB && c3[2] == 0xBF)
	1635	{
	1636	return S_FALSE; /* zwnbsp */
	1637	}
	1638	else
	1639	{
	1640	return S_TRUE;
	1641	}
	1642	}
	1643	else
	1644	{
	1645	return S_TRUE;
	1646	}
[68]	1647	}
	1648
	1649
[22]	1650	int sh_util_obscure_ok (const char * str)
[1]	1651	{
	1652	unsigned long i;
[22]	1653	char * endptr = NULL;
[1]	1654
[29]	1655	SL_ENTER(_("sh_util_obscure_ok"));
[1]	1656
	1657	if (0 == sl_strncmp("all", str, 3))
	1658	{
	1659	for (i = 0; i < 255; ++i)
	1660	{
	1661	sh_obscure_index[i] = (unsigned char)1;
	1662	}
[76]	1663	sh_obscure_no_check = S_TRUE;
[29]	1664	SL_RETURN(0, _("sh_util_obscure_ok"));
[1]	1665	}
	1666
[76]	1667	sh_obscure_no_check = S_FALSE;
	1668
[1]	1669	for (i = 0; i < 255; ++i)
	1670	{
	1671	sh_obscure_index[i] = (unsigned char)0;
	1672	}
	1673
[22]	1674	i = strtoul (str, &endptr, 0);
	1675	if (i > 255)
	1676	{
[29]	1677	SL_RETURN(-1, _("sh_util_obscure_ok"));
[22]	1678	}
	1679	sh_obscure_index[i] = (unsigned char)1;
	1680	if (*endptr == ',')
	1681	++endptr;
	1682
[1]	1683	while (*endptr != '\0')
	1684	{
	1685	i = strtoul (endptr, &endptr, 0);
	1686	if (i > 255)
	1687	{
[29]	1688	SL_RETURN(-1, _("sh_util_obscure_ok"));
[1]	1689	}
	1690	sh_obscure_index[i] = (unsigned char)1;
	1691	if (*endptr == ',')
	1692	++endptr;
	1693	}
[29]	1694	SL_RETURN(0, _("sh_util_obscure_ok"));
[1]	1695	}
	1696
[68]	1697	static int sh_obscure_check_utf8 = S_FALSE;
	1698
	1699	int sh_util_obscure_utf8 (const char * c)
	1700	{
	1701	int i;
	1702	SL_ENTER(_("sh_util_obscure_utf8"));
	1703	i = sh_util_flagval(c, &(sh_obscure_check_utf8));
[76]	1704	if (sh_obscure_check_utf8 == S_TRUE)
	1705	sh_obscure_no_check = S_FALSE;
[68]	1706	SL_RETURN(i, _("sh_util_obscure_utf8"));
	1707	}
	1708
	1709
[1]	1710	int sh_util_obscurename (ShErrLevel level, char * name_orig, int flag)
	1711	{
[29]	1712	unsigned char * name = (unsigned char *) name_orig;
[1]	1713	char * safe;
	1714	unsigned int i;
[76]	1715	size_t len = 0;
[1]	1716
	1717	SL_ENTER(_("sh_util_obscurename"));
	1718
	1719	ASSERT_RET((name != NULL), _("name != NULL"), (0))
	1720
[76]	1721	if (sh_obscure_no_check == S_FALSE)
[68]	1722	{
[76]	1723	if (sh_obscure_check_utf8 != S_TRUE)
[68]	1724	{
[76]	1725	/* -- Check name. --
	1726	*/
	1727	while (*name != '\0')
	1728	{
	1729	if ( (name) > 0x7F \|\| (name) == '"' \|\| (*name) == '\t' \|\|
	1730	(name) == '\b' \|\| (name) == '\f' \|\|
	1731	(name) == '\n' \|\| (name) == '\r' \|\|
	1732	(name) == '\v' \|\| iscntrl((int) name) \|\|
	1733	((name) != ' ' && !isgraph ((int) name)) )
	1734	{
	1735	i = (unsigned char) *name;
	1736	if (sh_obscure_index[i] != (unsigned char)1)
	1737	{
	1738	goto err;
	1739	}
	1740	}
	1741	name++; ++len;
	1742	}
	1743
	1744	/* Check for blank at end of name
	1745	*/
	1746	if ((len > 0) && (name_orig[len-1] == ' '))
	1747	{
	1748	goto err;
	1749	}
[68]	1750	}
[76]	1751	else
[1]	1752	{
[76]	1753	if (S_FALSE == sh_util_valid_utf8(name))
[1]	1754	{
[68]	1755	goto err;
[1]	1756	}
[76]	1757	SL_RETURN((0),_("sh_util_obscurename"));
[1]	1758	}
	1759	}
[76]	1760
[1]	1761	SL_RETURN((0),_("sh_util_obscurename"));
[68]	1762
	1763	err:
[76]	1764
[68]	1765	if (flag == S_TRUE)
	1766	{
	1767	safe = sh_util_safe_name (name_orig);
	1768	sh_error_handle (level, FIL__, __LINE__, 0, MSG_FI_OBSC,
	1769	safe);
	1770	SH_FREE(safe);
	1771	}
	1772	SL_RETURN((-1),_("sh_util_obscurename"));
[1]	1773	}
[68]	1774
[1]	1775	#endif
	1776
	1777	/* returns freshly allocated memory, return value should be free'd
	1778	*/
[34]	1779	char * sh_util_dirname(const char * fullpath)
[1]	1780	{
	1781	char * retval;
[34]	1782	size_t len;
[93]	1783	char * tmp;
[1]	1784
[34]	1785	SL_ENTER(_("sh_util_dirname"));
[1]	1786
	1787	ASSERT_RET ((fullpath != NULL), _("fullpath != NULL"), (NULL))
[93]	1788	ASSERT_RET ((fullpath == '/'), _("fullpath == '/'"), (NULL))
[1]	1789
[93]	1790	retval = sh_util_strdup(fullpath);
[1]	1791
[93]	1792	tmp = retval;
	1793	while (*tmp == '/') ++tmp;
[34]	1794
[93]	1795	/* (1) only leading slashes -- return exact copy
	1796	*/
	1797	if (*tmp == '\0')
	1798	{
	1799	SL_RETURN(retval, _("sh_util_dirname"));
	1800	}
	1801
	1802	/* (2) there are non-slash characters, so delete trailing slashes
	1803	*/
	1804	len = sl_strlen (retval); /* retval[len] is terminating '\0' */
	1805
	1806	while (len > 1 && retval[len-1] == '/') /* delete trailing slash */
	1807	{
	1808	retval[len-1] = '\0';
	1809	--len;
	1810	}
	1811
	1812	/* (3) now delete all non-slash characters up to the preceding slash
	1813	*/
	1814	while (len > 1 && retval[len-1] != '/') {
	1815	retval[len-1] = '\0';
[34]	1816	--len;
[1]	1817	}
	1818
[93]	1819	/* (4a) only leading slashes left, so return this
[1]	1820	*/
[93]	1821	if (&(retval[len]) == tmp)
	1822	{
	1823	SL_RETURN(retval, _("sh_util_dirname"));
[34]	1824	}
[1]	1825
[93]	1826	/* (4b) strip trailing slash(es) of parent directory
	1827	*/
	1828	while (len > 1 && retval[len-1] == '/') {
	1829	retval[len-1] = '\0';
	1830	--len;
	1831	}
	1832	SL_RETURN(retval, _("sh_util_dirname"));
[1]	1833
	1834	}
	1835
	1836	/* returns freshly allocated memory, return value should be free'd
	1837	*/
[34]	1838	char * sh_util_basename(const char * fullpath)
[1]	1839	{
[93]	1840	char * retval = NULL;
	1841	const char * tmp;
	1842	char * tmp2;
	1843	char * c;
	1844	size_t len;
[1]	1845
[34]	1846	SL_ENTER(_("sh_util_basename"));
[1]	1847
	1848	ASSERT_RET ((fullpath != NULL), _("fullpath != NULL"), (NULL))
	1849
[93]	1850	tmp = fullpath; while (*tmp == '/') ++tmp;
	1851	if (*tmp == '\0')
[34]	1852	{
[93]	1853	retval = sh_util_strdup(fullpath);
[34]	1854	}
	1855	else
	1856	{
[93]	1857	tmp2 = sh_util_strdup(tmp);
	1858	len = sl_strlen (tmp2);
	1859
	1860	while (len > 1 && tmp2[len-1] == '/')
[34]	1861	{
[93]	1862	tmp2[len-1] = '\0';
	1863	--len;
	1864	}
	1865
	1866	c = strrchr(tmp2, '/');
	1867	if (c)
	1868	{
[34]	1869	retval = sh_util_strdup(++c);
[93]	1870	SH_FREE(tmp2);
[34]	1871	}
	1872	else
	1873	{
[93]	1874	retval = tmp2;
[34]	1875	}
	1876	}
[1]	1877
[34]	1878	SL_RETURN(retval, _("sh_util_basename"));
[1]	1879	}
	1880
	1881
	1882	/* returns freshly allocated memory, return value should be free'd
	1883	*/
	1884	char * sh_util_safe_name (const char * name)
	1885	{
	1886	register int i = 0;
	1887	const char * p;
	1888	char * retval;
	1889	char oct[32];
	1890	char format[16];
[34]	1891	size_t len;
[1]	1892
	1893	SL_ENTER(_("sh_util_safe_name"));
	1894
	1895	if (name == NULL)
	1896	{
	1897	/* return an allocated array
	1898	*/
	1899	retval = SH_ALLOC(7);
	1900	(void) sl_strlcpy(retval, _("(null)"), 7);
	1901	SL_RETURN(retval, _("sh_util_safe_name"));
	1902	}
	1903
	1904	/*
	1905	ASSERT_RET ((name != NULL), _("name != NULL"), _("NULL"))
	1906	*/
	1907
[34]	1908	len = sl_strlen(name);
	1909	p = name;
	1910
[1]	1911	#ifdef SH_USE_XML
[34]	1912	if (sl_ok_muls (6, len) && sl_ok_adds ((6*len), 2))
	1913	{ retval = SH_ALLOC(6 * len + 2); }
	1914	else
	1915	{
	1916	/* return an allocated array
	1917	*/
	1918	retval = SH_ALLOC(11);
	1919	(void) sl_strlcpy(retval, _("(overflow)"), 11);
	1920	SL_RETURN(retval, _("sh_util_safe_name"));
	1921	}
[1]	1922	#else
[34]	1923	if (sl_ok_muls (4, len) && sl_ok_adds ((4*len), 2))
	1924	{ retval = SH_ALLOC(4 * len + 2); }
	1925	else
	1926	{
	1927	/* return an allocated array
	1928	*/
	1929	retval = SH_ALLOC(11);
	1930	(void) sl_strlcpy(retval, _("(overflow)"), 11);
	1931	SL_RETURN(retval, _("sh_util_safe_name"));
	1932	}
[1]	1933	#endif
	1934
	1935	(void) sl_strncpy(format, _("%c%03o"), 16);
	1936
	1937	while (*p != '\0') {
	1938	/* Most frequent cases first
	1939	*/
	1940	if ( ((p) >= 'a' && (p) <= 'z') \|\| ((p) == '/') \|\| ((p) == '.') \|\|
	1941	((p) >= '0' && (p) <= '9') \|\|
	1942	((p) >= 'A' && (p) <= 'Z')) {
	1943	retval[i] = *p;
	1944	} else if ( (p) == '\\') { / backslash */
	1945	retval[i] = '\\'; ++i;
	1946	retval[i] = '\\';
	1947	} else if ( (p) == '\n') { / newline */
	1948	retval[i] = '\\'; ++i;
	1949	retval[i] = 'n';
	1950	} else if ( (p) == '\b') { / backspace */
	1951	retval[i] = '\\'; ++i;
	1952	retval[i] = 'b';
	1953	} else if ( (p) == '\r') { / carriage return */
	1954	retval[i] = '\\'; ++i;
	1955	retval[i] = 'r';
	1956	} else if ( (p) == '\t') { / horizontal tab */
	1957	retval[i] = '\\'; ++i;
	1958	retval[i] = 't';
	1959	} else if ( (p) == '\v') { / vertical tab */
	1960	retval[i] = '\\'; ++i;
	1961	retval[i] = 'v';
	1962	} else if ( (p) == '\f') { / form-feed */
	1963	retval[i] = '\\'; ++i;
	1964	retval[i] = 'f';
	1965	#ifdef WITH_DATABASE
	1966	} else if ( (p) == '\'') { / single quote */
	1967	retval[i] = '\\'; ++i;
	1968	retval[i] = '\'';
	1969	#endif
	1970	} else if ( (p) == ' ') { / space */
	1971	retval[i] = '\\'; ++i;
	1972	retval[i] = ' ';
	1973	#ifdef SH_USE_XML
	1974	} else if ( (p) == '"') { / double quote */
	1975	retval[i] = '&'; ++i;
	1976	retval[i] = 'q'; ++i;
	1977	retval[i] = 'u'; ++i;
	1978	retval[i] = 'o'; ++i;
	1979	retval[i] = 't'; ++i;
	1980	retval[i] = ';';
	1981	} else if ( (p) == '&') { / ampersand */
	1982	retval[i] = '&'; ++i;
	1983	retval[i] = 'a'; ++i;
	1984	retval[i] = 'm'; ++i;
	1985	retval[i] = 'p'; ++i;
	1986	retval[i] = ';';
	1987	} else if ( (p) == '<') { / left angle */
	1988	retval[i] = '&'; ++i;
	1989	retval[i] = 'l'; ++i;
	1990	retval[i] = 't'; ++i;
	1991	retval[i] = ';';
	1992	} else if ( (p) == '>') { / right angle */
	1993	retval[i] = '&'; ++i;
	1994	retval[i] = 'g'; ++i;
	1995	retval[i] = 't'; ++i;
	1996	retval[i] = ';';
	1997	#else
	1998	} else if ( (p) == '"') { / double quote */
	1999	retval[i] = '\\'; ++i;
	2000	retval[i] = '\"';
	2001	#endif
	2002	} else if (!isgraph ((int) p)) { / not printable */
	2003	/@-bufferoverflowhigh -formatconst@/
[22]	2004	/* flawfinder: ignore */
[1]	2005	sprintf(oct, format, '\\', /* known to fit */
	2006	(unsigned char) *p);
	2007	/@+bufferoverflowhigh +formatconst@/
	2008	retval[i] = oct[0]; ++i;
	2009	retval[i] = oct[1]; ++i;
	2010	retval[i] = oct[2]; ++i;
	2011	retval[i] = oct[3];
	2012	} else {
	2013	retval[i] = *p;
	2014	}
	2015	++p;
	2016	++i;
	2017	}
	2018	retval[i] = '\0';
	2019	SL_RETURN(retval, _("sh_util_safe_name"));
	2020	}
	2021
	2022	int sh_util_isnum (char *str)
	2023	{
	2024	char *p = str;
	2025
	2026	SL_ENTER(_("sh_util_isnum"));
	2027
	2028	ASSERT_RET ((str != NULL), _("str != NULL"), (-1))
	2029
	2030	while (p) {
	2031	if (!isdigit((int) *p) )
	2032	SL_RETURN((-1), _("sh_util_isnum"));
	2033	++p;
	2034	}
	2035	SL_RETURN((0), _("sh_util_isnum"));
	2036	}
	2037
[76]	2038	char * sh_util_strconcat (const char * arg1, ...)
[1]	2039	{
[34]	2040	size_t length, l2;
[1]	2041	char * s;
	2042	char * strnew;
	2043	va_list vl;
	2044
	2045	SL_ENTER(_("sh_util_strconcat"));
	2046
	2047	ASSERT_RET ((arg1 != NULL), _("arg1 != NULL"), (NULL))
	2048
	2049	length = sl_strlen (arg1) + 1;
	2050
	2051	va_start (vl, arg1);
	2052	s = va_arg (vl, char * );
	2053	while (s != NULL)
	2054	{
[34]	2055	l2 = sl_strlen (s);
	2056	if (sl_ok_adds(length, l2))
	2057	length += l2;
	2058	else
	2059	SL_RETURN(NULL, _("sh_util_strconcat"));
[1]	2060	s = va_arg (vl, char * );
	2061	}
	2062	va_end (vl);
	2063
[34]	2064	if (sl_ok_adds(length, 2))
	2065	strnew = SH_ALLOC( length + 2 );
	2066	else
	2067	SL_RETURN(NULL, _("sh_util_strconcat"));
	2068
[1]	2069	strnew[0] = '\0';
	2070
	2071	(void) sl_strlcpy (strnew, arg1, length + 2);
	2072
	2073	va_start (vl, arg1);
	2074	s = va_arg (vl, char * );
	2075	while (s)
	2076	{
	2077	(void) sl_strlcat (strnew, s, length + 2);
	2078	s = va_arg (vl, char * );
	2079	}
	2080	va_end (vl);
	2081
	2082	SL_RETURN(strnew, _("sh_util_strconcat"));
	2083	}
	2084
	2085
	2086	#ifdef HAVE_REGEX_H
	2087
	2088	#include <regex.h>
	2089
	2090	int sh_util_regcmp (char * regex_str, char * in_str)
	2091	{
	2092	#if defined(REG_ESPACE)
	2093	int status = REG_ESPACE;
	2094	#else
	2095	int status = -1;
	2096	#endif
	2097	regex_t preg;
	2098	char * errbuf;
	2099
	2100	SL_ENTER(_("sh_util_regcmp"));
	2101
	2102	status = regcomp(&preg, regex_str, REG_NOSUB\|REG_EXTENDED);
	2103
	2104	if (status == 0)
	2105	{
	2106	if ((status = regexec(&preg, in_str, 0, NULL, 0)) == 0)
	2107	{
	2108	regfree (&preg);
	2109	SL_RETURN((0), _("sh_util_regcmp"));
	2110	}
	2111	}
	2112
	2113	if (status != 0 && status != REG_NOMATCH)
	2114	{
[34]	2115	errbuf = SH_ALLOC(BUFSIZ);
[1]	2116	(void) regerror(status, &preg, errbuf, BUFSIZ);
[34]	2117	errbuf[BUFSIZ-1] = '\0';
[1]	2118	sh_error_handle ((-1), FIL__, __LINE__, status, MSG_E_REGEX,
	2119	errbuf, regex_str);
	2120	SH_FREE(errbuf);
	2121	}
	2122
	2123	regfree (&preg);
	2124	SL_RETURN((-1), _("sh_util_regcmp"));
	2125	}
	2126
	2127	#endif
	2128
	2129
	2130
	2131
	2132
	2133
	2134
	2135

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