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sh_utils.c@ 577

Last change on this file since 577 was 570, checked in by katerina, 3 years ago
Fixes for some compile/cppcheck warnings, version 4.4.6.
File size: 54.5 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	{
[504]	226	/* cppcheck-suppress leakReturnValNotUsed */
[1]	227	if (NULL == freopen(ttyname(STDERR_FILENO), "r", stdin))
	228	{
	229	sh_error_handle ((-1), FIL__, __LINE__, 0,
	230	MSG_E_SUBGEN,
	231	_("Cannot continue: stdin is not a terminal"),
	232	_("sh_util_ask_update"));
	233	exit(EXIT_FAILURE);
	234	}
	235	}
	236	else
	237	{
	238	sh_error_handle ((-1), FIL__, __LINE__, 0,
	239	MSG_E_SUBGEN,
	240	_("Cannot continue: stdin is not a terminal"),
	241	_("sh_util_ask_update"));
	242	exit(EXIT_FAILURE);
	243	}
	244	}
	245	#endif
	246
	247	if (sh_ask_update == S_TRUE)
	248	{
	249	tmp = sh_util_safe_name (path);
	250	fprintf (stderr, _("Update %s [Y/n] ? "), tmp);
	251	SH_FREE(tmp);
	252	while (1 == 1)
	253	{
	254	c = fgetc(stdin); inchar = c;
	255	/@+charintliteral@/
	256	while (c != '\n' && c != EOF)
	257	c = fgetc(stdin);
	258	/* fprintf(stderr, "CHAR (1): %c\n", inchar); */
	259	if (inchar == 'Y' \|\| inchar == 'y' \|\| inchar == '\n')
	260	{
	261	break;
	262	}
	263	else if (inchar == 'n' \|\| inchar == 'N')
	264	{
	265	i = S_FALSE;
	266	break;
	267	}
	268	else
	269	{
[210]	270	fprintf(stderr, "%s", _("Please answer y(es) or n(o)\n"));
[1]	271	}
	272	/@-charintliteral@/
	273	}
	274	}
	275
	276	SL_RETURN(i, _("sh_util_ask_update"));
	277	}
	278
[22]	279	int sh_util_hidesetup(const char * c)
[1]	280	{
	281	int i;
	282	SL_ENTER(_("sh_util_hidesetup"));
	283	i = sh_util_flagval(c, &(sh.flag.hidefile));
	284
	285	SL_RETURN(i, _("sh_util_hidesetup"));
	286	}
[68]	287
	288	char * sh_util_acl_compact(char * buf, ssize_t len)
	289	{
	290	unsigned char * p = (unsigned char *) buf;
	291	int state = 0;
	292	ssize_t rem = 0;
	293	char * out;
	294
	295	SH_VALIDATE_NE(buf, NULL);
	296	SH_VALIDATE_GE(len, 0);
	297
	298	out = SH_ALLOC(len + 1);
	299
	300	while (*p != '\0') {
	301
	302	/* -- not at start or after newline
	303	*/
	304	if (state == 1) {
	305	if (p == '\n' \|\| p == ' ' \|\| p == '\t' \|\| p == '#') {
	306	while (*p != '\n') {
	307	++p;
	308	if (*p == '\0') {
	309	goto exit_it;
	310	}
	311	}
[481]	312	out[rem] = ','; ++rem; /* <-- ensures (rem > 0) is true */
	313	while (p[1] == '\n') ++p; /* scan over consecutive newlines */
[68]	314	state = 0;
	315	if (p[1] == '\0') {
[481]	316	out[rem-1] = '\0'; /* rem > 0 because of 4 lines above */
[68]	317	break;
	318	}
	319	}
	320	else {
	321	if (p <= 0x7F && isgraph((int) p)) {
	322	out[rem] = (char) *p; ++rem;
	323	}
	324	}
	325	}
	326
	327	/* -- at start or after newline
	328	*/
	329	else /* if (state == 0) */ {
	330	if (0 == strncmp((char *) p, "user", 4)) {
	331	out[rem] = 'u'; ++rem;
[382]	332	p += 3;
[68]	333	} else if (0 == strncmp((char *) p, "group", 5)) {
	334	out[rem] = 'g'; ++rem;
[382]	335	p += 4;
[68]	336	} else if (0 == strncmp((char *) p, "mask", 4)) {
	337	out[rem] = 'm'; ++rem;
[382]	338	p += 3;
[68]	339	} else if (0 == strncmp((char *) p, "other", 5)) {
	340	out[rem] = 'o';
[382]	341	p += 4; ++rem;
[68]	342	} else if (*p == '\0') {
	343	if (rem > 0) { out[rem-1] = '\0'; }
	344	break;
	345	} else {
	346	if (p <= 0x7F && isprint((int) p)) {
	347	out[rem] = (char) *p; ++rem;
	348	}
	349	}
	350	state = 1;
	351	}
	352	++p;
	353	}
	354	exit_it:
	355	out[rem] = '\0';
	356	return out;
	357	}
[76]	358
	359
	360	char * sh_util_strdup_l (const char * str, size_t len)
	361	{
	362	char * p = NULL;
	363
	364	SL_ENTER(_("sh_util_strdup_l"));
	365
	366	SH_VALIDATE_NE(str, NULL);
	367	SH_VALIDATE_NE(len, 0);
	368
[382]	369	if (str && sl_ok_adds (len, 1))
[76]	370	{
	371	p = SH_ALLOC (len + 1);
[167]	372	(void) memcpy (p, str, len+1);
[76]	373	}
	374	else
	375	{
	376	safe_fatal(_("integer overflow in sh_util_strdup_l"), FIL__, __LINE__);
	377	}
	378	SL_RETURN( p, _("sh_util_strdup_l"));
	379	}
	380
[1]	381	char * sh_util_strdup (const char * str)
	382	{
	383	char * p = NULL;
	384	size_t len;
	385
	386	SL_ENTER(_("sh_util_strdup"));
	387
[25]	388	SH_VALIDATE_NE(str, NULL);
	389
[382]	390	if (str)
	391	{
	392	len = sl_strlen(str);
	393	p = SH_ALLOC (len + 1);
	394	(void) memcpy (p, str, len+1);
	395	}
[1]	396	SL_RETURN( p, _("sh_util_strdup"));
	397	}
	398
[382]	399	char * sh_util_strdup_track (const char * str, char * file, int line)
	400	{
	401	char * p = NULL;
	402	size_t len;
	403
	404	SL_ENTER(_("sh_util_strdup_track"));
	405
	406	SH_VALIDATE_NE(str, NULL);
	407
	408	if (str)
	409	{
	410	len = sl_strlen(str);
	411	p = SH_OALLOC (len + 1, file, line);
	412	(void) memcpy (p, str, len+1);
	413	}
	414	SL_RETURN( p, _("sh_util_strdup_track"));
	415	}
	416
[1]	417	/* by the eircom.net computer incident
	418	* response team
	419	*/
	420	char * sh_util_strsep (char *str, const char delim)
	421	{
[170]	422	char ret, c;
	423	const char *d;
[1]	424
	425	SL_ENTER(_("sh_util_strsep"));
	426	ret = *str;
	427
[25]	428	SH_VALIDATE_NE(ret, NULL);
[1]	429
[382]	430	if (*str)
	431	{
	432	for (c = str; c != '\0'; c++) {
	433	for (d = delim; *d != '\0'; d++) {
	434	if (c == d) {
	435	*c = '\0';
	436	*str = c + 1;
	437	SL_RETURN(ret, _("sh_util_strsep"));
	438	}
	439	}
[1]	440	}
	441	}
	442
	443	/* If we get to here, there's no delimiters in the string */
	444	*str = NULL;
	445	SL_RETURN(ret, _("sh_util_strsep"));
	446	}
	447
	448
[13]	449	/* returned string must be free'd by caller.
[1]	450	*/
	451	char * sh_util_formatted (const char * formatt, st_format * ftab)
	452	{
	453	struct tm * time_ptr;
	454	size_t size;
	455	size_t isiz;
	456	char * fmt = NULL;
	457	char * p;
	458	char * q;
	459	char * outstr;
	460	int i;
	461	int j;
	462	time_t inpp;
	463
[13]	464	char * clist[16] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	465	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL };
[1]	466	int nn = 0;
	467
	468	SL_ENTER(_("sh_util_formatted"));
	469
[13]	470	if (formatt == NULL \|\| ftab == NULL \|\| *formatt == '\0')
[1]	471	SL_RETURN(NULL, _("sh_util_formatted"));
	472
	473	/* -- save the format (we overwrite it !!) --
	474	*/
	475	size = sl_strlen(formatt);
	476
[34]	477	if (!sl_ok_adds(size, 1))
	478	SL_RETURN(NULL, _("sh_util_formatted"));
[13]	479
[34]	480	++size;
	481	fmt = SH_ALLOC(size);
	482	(void) sl_strlcpy(fmt, formatt, size);
	483
[1]	484	p = fmt;
	485
	486	j = 0;
[13]	487	while (ftab[j].fchar != '\0') {
	488	if (ftab[j].type != S_FMT_STRING)
	489	ftab[j].data_str = NULL;
	490	++j;
	491	}
	492
[1]	493	while (p != NULL && *p != '\0' && NULL != (q = strchr(p, '%')))
	494	{
	495	++q;
	496
	497	/* fprintf(stderr, "p == %s q == %s\n", p, q); */
	498
	499	/* -- end of string is a '%' --
	500	*/
	501	if (*q == '\0')
	502	{
	503	--q;
	504	*q = '\0';
	505	break;
	506	}
	507
	508	i = 0;
	509	j = 0;
	510
	511	/* -- search the format char in input table --
	512	* put (nn < 16) here -> all remaining %foo will be
	513	* converted to %%
	514	*/
	515	while (ftab[j].fchar != '\0' && nn < 16)
	516	{
	517	if (ftab[j].fchar == *q)
	518	{
	519	/* -- Convert it to a string format (%s). --
	520	*/
	521	*q = 's'
	522	;
	523	i = 1;
	524
[13]	525	switch(ftab[j].type) {
	526
	527	case S_FMT_STRING:
[1]	528	{
	529	isiz = sl_strlen(ftab[j].data_str);
[34]	530	if (isiz > 0 && sl_ok_adds(size, isiz))
[1]	531	{
	532	size += isiz;
	533	clist[nn] = ftab[j].data_str;
	534	++nn;
	535	}
	536	else
	537	*q = '%';
[13]	538	goto endsrch;
[1]	539	}
[13]	540	break;
	541
	542	case S_FMT_ULONG:
[1]	543	{
	544	ftab[j].data_str = (char *) SH_ALLOC(64);
	545	/@-bufferoverflowhigh@/
	546	sprintf (ftab[j].data_str, "%lu", /* known to fit */
	547	ftab[j].data_ulong);
	548	/@+bufferoverflowhigh@/
	549	isiz = sl_strlen(ftab[j].data_str);
[34]	550	if (isiz > 0 && sl_ok_adds(size, isiz))
[1]	551	{
	552	size += isiz;
	553	clist[nn] = ftab[j].data_str;
	554	++nn;
	555	}
	556	else
	557	*q = '%';
[13]	558	goto endsrch;
[1]	559	}
[13]	560	break;
	561
	562	case S_FMT_LONG:
[1]	563	{
	564	ftab[j].data_str = (char *) SH_ALLOC(64);
	565	/@-bufferoverflowhigh@/
	566	sprintf (ftab[j].data_str, "%ld", /* known to fit */
	567	ftab[j].data_long);
	568	/@+bufferoverflowhigh@/
	569	isiz = sl_strlen(ftab[j].data_str);
[34]	570	if (isiz > 0 && sl_ok_adds(size, isiz))
[1]	571	{
	572	size += isiz;
	573	clist[nn] = ftab[j].data_str;
	574	++nn;
	575	}
	576	else
	577	*q = '%';
[13]	578	goto endsrch;
[1]	579	}
[13]	580	break;
	581
	582	case S_FMT_TIME:
[1]	583	{
	584	ftab[j].data_str = (char *) SH_ALLOC(64);
	585	inpp = (time_t)ftab[j].data_ulong;
	586	if (inpp != 0)
	587	{
	588	time_ptr = localtime (&(inpp));
	589	if (time_ptr != NULL)
	590	(void) strftime(ftab[j].data_str, 64,
	591	_("%d-%m-%Y %H:%M:%S"), time_ptr);
	592	else
	593	(void) sl_strlcpy(ftab[j].data_str,
	594	_("00-00-0000 00:00:00"), 64);
	595	}
	596	else
	597	{
	598	(void) sl_strlcpy(ftab[j].data_str,
	599	_("(None)"), 64);
	600	}
	601	isiz = sl_strlen(ftab[j].data_str);
[34]	602	if (isiz > 0 && sl_ok_adds(size, isiz))
[1]	603	{
	604	size += isiz;
	605	clist[nn] = ftab[j].data_str;
	606	++nn;
	607	}
	608	else
	609	*q = '%';
[13]	610	goto endsrch;
[1]	611	}
[13]	612	break;
[1]	613
[13]	614	default:
	615	/* do nothing */;
	616	}
	617
[1]	618	}
[13]	619	++j;
[1]	620	}
	621
[13]	622	endsrch:
	623
	624	p = q;
	625
[1]	626	/* -- not found -- */
	627	if (i == 0)
	628	{
	629	*q = '%';
	630	++p;
	631	}
[13]	632
[1]	633	}
	634
	635	/* -- Format string evaluated.
	636	clist[] List of strings
	637	size Total size of format string + clist[] strings
	638	-- */
	639
	640	/* -- closing '\0' --
	641	*/
[34]	642	if (sl_ok_adds(size, 1))
	643	size++;
[1]	644	outstr = (char *) SH_ALLOC(size);
	645
	646	/* -- print it --
	647	*/
	648	(void) sl_snprintf( outstr, size, fmt,
	649	clist[0], clist[1], clist[2], clist[3],
	650	clist[4], clist[5], clist[6], clist[7],
	651	clist[8], clist[9], clist[10], clist[11],
	652	clist[12], clist[13], clist[14], clist[15]);
[34]	653	outstr[size-1] = '\0';
	654
[1]	655	/* -- cleanup --
	656	*/
	657	j = 0;
[13]	658	while (ftab[j].fchar != '\0') {
	659	if (ftab[j].type != S_FMT_STRING && ftab[j].data_str != NULL)
	660	SH_FREE(ftab[j].data_str);
	661	++j;
	662	}
[1]	663	SH_FREE(fmt);
	664
	665	SL_RETURN(outstr, _("sh_util_formatted"));
	666	}
	667
[93]	668	/* read a hexchar, return int value (0-15)
	669	* can't inline (AIX)
[1]	670	*/
[12]	671	int sh_util_hexchar( const char c )
[1]	672	{
	673	/@+charint@/
	674	if ( c >= '0' && c <= '9' )
	675	return c - '0';
	676	else if ( c >= 'a' && c <= 'f' )
	677	return c - 'a' + 10;
	678	else if ( c >= 'A' && c <= 'F' )
	679	return c - 'A' + 10;
	680	else return -1;
	681	/@-charint@/
	682	}
	683
[137]	684	char * sh_util_charhex( unsigned char i , char * i2h)
[93]	685	{
	686	int j, k;
	687
	688	j = i / 16;
	689	k = i - (j*16);
	690
	691	if (j < 10) i2h[0] = '0'+j;
	692	else i2h[0] = 'A'+(j-10);
	693
	694	if (k < 10) i2h[1] = '0'+k;
	695	else i2h[1] = 'A'+(k-10);
	696
	697	return i2h;
	698	}
	699
[1]	700	/* read a hexadecimal key, convert to binary
	701	*/
[12]	702	int sh_util_hextobinary (char * binary, const char * hex, int bytes)
[1]	703	{
	704	int i = 0, j, k, l = 0;
[13]	705	char c;
[1]	706
[13]	707	#define SH_HEXCHAR(x, y) \
	708	c = (x); \
	709	if ( c >= '0' && c <= '9' ) \
	710	y = c - '0'; \
	711	else if ( c >= 'a' && c <= 'f' ) \
	712	y = c - 'a' + 10; \
	713	else if ( c >= 'A' && c <= 'F' ) \
	714	y = c - 'A' + 10; \
	715	else \
	716	SL_RETURN((-1), _("sh_util_hextobinary"))
	717
	718
[1]	719	SL_ENTER(_("sh_util_hextobinary"));
	720
[34]	721	if (bytes < 2)
	722	SL_RETURN((-1), _("sh_util_hextobinary"));
	723
	724	while (i < (bytes-1))
[1]	725	{
[13]	726	SH_HEXCHAR(hex[i], k);
	727	SH_HEXCHAR(hex[i+1], j);
	728
	729	binary[l] = (char)(k * 16 + j);
	730	++l; i+= 2;
[1]	731	}
	732
	733	SL_RETURN((0), _("sh_util_hextobinary"));
	734	}
	735
	736	static void copy_four (unsigned char * dest, UINT32 in)
	737	{
	738	UINT32 i, j;
	739	int count;
	740
	741	SL_ENTER(_("copy_four"));
	742	for (count = 0; count < 4; ++count)
	743	{
	744	i = in / 256;
	745	j = in - (i*256);
	746	dest[count] = (unsigned char) j;
	747	in = i;
	748	}
	749	SL_RET0(_("copy_four"));
	750	}
	751
	752	/* compute HMAC-TIGER
	753	*/
	754	static char * sh_util_hmac_tiger (char * hexkey,
[133]	755	char * text, size_t textlen,
	756	char * res, size_t len)
[1]	757	{
	758	static char opad[KEY_BLOCK] = {
	759	(char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C,
	760	(char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C,
	761	(char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C,
	762	(char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C, (char)0x5C
	763	};
	764	static char ipad[KEY_BLOCK] = {
	765	(char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36,
	766	(char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36,
	767	(char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36,
	768	(char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36, (char)0x36
	769	};
[11]	770	static char zap[KEY_BLOCK] = {
	771	(char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00,
	772	(char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00,
	773	(char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00,
	774	(char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00, (char)0x00
	775	};
[1]	776	char K[KEY_BLOCK];
	777	char outer[KEY_BLOCK];
	778	char * inner;
	779	UINT32 * h1;
	780	UINT32 * h2;
	781	UINT32 cc[KEY_LEN/4];
[133]	782	UINT32 kbuf[KEY_BYT/sizeof(UINT32)];
	783	char hashbuf[KEYBUF_SIZE];
[1]	784
[481]	785	int result;
[1]	786	size_t i;
	787
	788	SL_ENTER(_("sh_util_hmac_tiger"));
	789
[481]	790	ASSERT((KEY_BLOCK <= (KEY_LEN/2)), _("KEY_BLOCK <= (KEY_LEN/2)"));
[1]	791
[11]	792	memcpy (K, zap, KEY_BLOCK);
[1]	793
[481]	794	result = sh_util_hextobinary (K, hexkey, KEY_LEN);
[1]	795
[481]	796	ASSERT((result >= 0), _("result >= 0"));
	797
	798	if ((result >= 0) && sl_ok_adds(textlen, KEY_BLOCK))
[34]	799	{
	800	inner = (char *) SH_ALLOC (textlen + KEY_BLOCK);
[1]	801
[34]	802	for (i = 0; i < KEY_BLOCK; ++i)
	803	{
	804	outer[i] = K[i] ^ opad[i];
	805	inner[i] = K[i] ^ ipad[i];
	806	}
	807	for (i = KEY_BLOCK; i < (KEY_BLOCK+textlen); ++i)
	808	{
	809	inner[i] = text[i - KEY_BLOCK];
	810	}
[1]	811	}
[34]	812	else
[1]	813	{
[34]	814	sh_error_handle((-1), FIL__, __LINE__, -1, MSG_E_SUBGEN,
	815	_("integer overflow"),
	816	_("sh_util_hmac_tiger"));
[137]	817	(void) sh_tiger_hash (NULL, TIGER_DATA, 0, hashbuf, sizeof(hashbuf));
	818	sl_strlcpy(res, hashbuf, len);
[34]	819	SL_RETURN(res, _("sh_util_hmac_tiger"));
[1]	820	}
	821
	822	/* now compute the hash
	823	*/
[481]	824	h1 = sh_tiger_hash_uint32 ( outer, TIGER_DATA, KEY_BLOCK,
[133]	825	kbuf, KEY_BYT/sizeof(UINT32));
[1]	826	for (i = 0; i < (KEY_LEN/8); ++i)
[481]	827	copy_four ( (unsigned char *) &(cc[i]), h1[i]);
[1]	828
[560]	829	/* cppcheck-suppress uninitvar */
[481]	830	h2 = sh_tiger_hash_uint32 ( inner, TIGER_DATA,
[133]	831	(unsigned long) KEY_BLOCK+textlen,
	832	kbuf, KEY_BYT/sizeof(UINT32));
[1]	833	for (i = KEY_LEN/8; i < (KEY_LEN/4); ++i)
[481]	834	copy_four ( (unsigned char *) &(cc[i]), h2[i - (KEY_LEN/8)]);
	835
[560]	836	/* cppcheck-suppress uninitvar */
[1]	837	SH_FREE(inner);
	838
[133]	839	(void) sh_tiger_hash ((char *) &cc[0],
	840	TIGER_DATA,
	841	(unsigned long) (KEY_LEN/4 * sizeof(UINT32)),
	842	hashbuf, sizeof(hashbuf));
[1]	843
[133]	844	sl_strlcpy(res, hashbuf, len);
[1]	845	SL_RETURN(res, _("sh_util_hmac_tiger"));
	846	}
	847
	848	static char * sh_util_hash_tiger ( char * hexkey,
[137]	849	char * text, size_t textlen,
[133]	850	char * res, size_t len)
[1]	851	{
	852	char h2[2*KEY_LEN+1];
[137]	853	char hashbuf[KEYBUF_SIZE];
	854
[1]	855	SL_ENTER(_("sh_util_hash_tiger"));
	856
	857	(void) sl_strlcpy(h2, hexkey, KEY_LEN+1);
[133]	858	(void) sl_strlcat(h2,
	859	sh_tiger_hash(text, TIGER_DATA,
	860	(unsigned long) textlen,
	861	hashbuf, sizeof(hashbuf)),
[137]	862	2*KEY_LEN+1
[133]	863	);
[1]	864
[133]	865	(void) sh_tiger_hash(h2, TIGER_DATA, 2*KEY_LEN, hashbuf, sizeof(hashbuf));
[1]	866
[133]	867	sl_strlcpy(res, hashbuf, len);
[1]	868	SL_RETURN(res, _("sh_util_hash_tiger"));
	869	}
	870
	871	/* --- compute signature on data ---
	872	*/
	873	#define TYPE_HMAC 0
	874	#define TYPE_HASH 1
	875
	876	static int sigtype = TYPE_HMAC;
	877
[22]	878	int sh_util_sigtype (const char * c)
[1]	879	{
	880	SL_ENTER(_("sh_util_sigtype"));
	881	if (c == NULL)
	882	SL_RETURN( -1, _("sh_util_sigtype"));
	883
	884	if (0 == strcmp(_("HMAC-TIGER"), c))
	885	sigtype = TYPE_HMAC;
	886	else if (0 == strcmp(_("HASH-TIGER"), c))
	887	sigtype = TYPE_HASH;
	888	else
	889	SL_RETURN( -1, _("sh_util_sigtype"));
	890
	891	SL_RETURN( 0, _("sh_util_sigtype"));
	892	}
	893
	894	char * sh_util_siggen (char * hexkey,
[133]	895	char * text, size_t textlen,
	896	char * res, size_t len)
[1]	897	{
	898	char * p;
	899
	900	SL_ENTER(_("sh_util_siggen"));
	901	if (sigtype == TYPE_HMAC)
	902	p = sh_util_hmac_tiger (hexkey,
[133]	903	text, textlen, res, len);
[1]	904	else
	905	p = sh_util_hash_tiger (hexkey,
[133]	906	text, textlen, res, len);
[1]	907	SL_RETURN(p, _("sh_util_siggen"));
	908	}
	909
	910
	911	/* a simple compressor
	912	*/
[214]	913	size_t sh_util_compress (char * dest, char * src, size_t dest_size)
[1]	914	{
	915	char * add;
	916	char * get;
	917	size_t count = 0;
	918	size_t dest_end;
	919
	920	SL_ENTER(_("sh_util_compress"));
	921
	922	if (dest_size == 0)
	923	SL_RETURN((0), _("sh_util_compress"));
	924
	925	if ((dest == NULL) \|\| (src == NULL))
	926	SL_RETURN((0), _("sh_util_compress"));
	927
	928	dest_end = sl_strlen(dest);
	929
	930	if (dest_end > dest_size)
	931	SL_RETURN((0), _("sh_util_compress"));
	932
	933	add = &dest[dest_end];
	934	get = src;
	935
	936	while (count < (dest_size-dest_end))
	937	{
	938	if (isalnum((int) *get))
	939	{
	940	add = get;
	941	++add;
	942	++count;
	943	}
	944	++get;
	945	if (*get == '\0' && (count < (dest_size-dest_end)))
	946	/* end of src reached */
	947	{
	948	add = get; /* copy the '\0' */
	949	break; /* and stop copying */
	950	}
	951	}
	952
	953	dest[dest_size-1] = '\0'; /* paranoia */
[214]	954	SL_RETURN((count), _("sh_util_compress")); /* no of chars copied */
[1]	955	}
	956
	957
	958	/* copy the four least significant bytes
	959	*/
	960	void sh_util_cpylong (char * dest, const char * src, int len )
	961	{
	962	int i, j;
	963	union
	964	{
	965	long l;
	966	char c[sizeof(long)];
	967	} u;
[290]	968	#ifdef WORDS_BIGENDIAN
	969	unsigned char swap;
	970	unsigned char * ii = (unsigned char *) dest;
	971	#endif
[1]	972
	973	SL_ENTER(_("sh_util_cpylong"));
	974
	975	u.l = 1;
	976
	977	/* MSB is first
	978	*/
	979	if (sizeof(long)>4 &&/@+charint@/(u.c[sizeof(long)-1] == 1)/@-charint@/)
	980	{
	981	j = (int) (sizeof(long)-4);
	982	for (i = 0; i < j; ++i) ++src;
	983	}
	984
	985	i = 0;
	986
	987	while (i < 4)
	988	{
	989	dest = (src);
	990	++dest; ++src;
	991	if (i == (len-1)) break;
	992	++i;
	993	}
[290]	994	#ifdef WORDS_BIGENDIAN
	995	swap = ii[0]; ii[0] = ii[3]; ii[3] = swap;
	996	swap = ii[1]; ii[1] = ii[2]; ii[2] = swap;
	997	#endif
[1]	998	SL_RET0(_("sh_util_cpylong"));
	999	}
	1000
	1001	/* This is a maximally equidistributed combined Tausworthe
	1002	* generator. The sequence is,
	1003	*
	1004	* x_n = (s1_n ^ s2_n ^ s3_n)
	1005	*
	1006	* s1_{n+1} = (((s1_n & 4294967294) <<12) ^ (((s1_n <<13) ^ s1_n) >>19))
	1007	* s2_{n+1} = (((s2_n & 4294967288) << 4) ^ (((s2_n << 2) ^ s2_n) >>25))
	1008	* s3_{n+1} = (((s3_n & 4294967280) <<17) ^ (((s3_n << 3) ^ s3_n) >>11))
	1009	*
	1010	* computed modulo 2^32. In the three formulas above '^' means
	1011	* exclusive-or (C-notation), not exponentiation. Note that the
	1012	* algorithm relies on the properties of 32-bit unsigned integers (it
	1013	* is formally defined on bit-vectors of length 32).
	1014	*
	1015	* Stolen from GSL (GNU scientific library) and modified somewhat.
	1016	* I am using UINT32, which is guaranteed to be 32 bits. Also made
	1017	* sure that the initialization vector is valid.
	1018	*/
	1019
	1020
[481]	1021	/* interval [0, 4294967295]
[1]	1022	*/
	1023	static UINT32 taus_get_long (void *vstate)
	1024	{
	1025	UINT32 * state = (UINT32 *) vstate;
	1026
[137]	1027	/*
[1]	1028	if (skey->rngI == BAD)
	1029	(void)taus_seed();
[137]	1030	*/
[1]	1031
	1032	#define TAUSWORTHE(s,a,b,c,d) ((s &c) <<d) ^ (((s <<a) ^s) >>b)
	1033	/@+ignorequals@/
	1034	state[0] = TAUSWORTHE (state[0], 13, 19, 4294967294UL, 12);
	1035	state[1] = TAUSWORTHE (state[1], 2, 25, 4294967288UL, 4);
	1036	state[2] = TAUSWORTHE (state[2], 3, 11, 4294967280UL, 17);
	1037	/@-ignorequals@/
	1038	return (state[0] ^ state[1] ^ state[2]);
	1039	}
	1040
	1041	/* Hide the internal state of the PRNG by using its output as
	1042	* input for a one-way hash function.
	1043	*/
[11]	1044
[137]	1045	UINT32 taus_get ()
[1]	1046	{
[156]	1047	#define TAUS_SAMPLE 12
	1048
	1049	UINT32 taus_svec[TAUS_SAMPLE];
[1]	1050	UINT32 retval;
	1051	UINT32 * res;
[156]	1052	UINT32 * res_vec = &(skey->res_vec[0]);
[13]	1053	static int res_num = 0;
[1]	1054	register int i;
[133]	1055	UINT32 kbuf[KEY_BYT/sizeof(UINT32)];
[1]	1056
[137]	1057	SH_MUTEX_LOCK_UNSAFE(mutex_skey);
[13]	1058	if (res_num > 0)
	1059	{
	1060	retval = res_vec[res_num];
	1061	res_num = (res_num == 5) ? 0 : (res_num + 1);
[137]	1062	SH_MUTEX_UNLOCK_UNSAFE(mutex_skey); /* alternative path */
[13]	1063	return retval;
	1064	}
[137]	1065	SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
[13]	1066
[137]	1067	(void)taus_seed();
[1]	1068
[137]	1069	SH_MUTEX_LOCK_UNSAFE(mutex_skey);
[156]	1070	for (i = 0; i < (TAUS_SAMPLE/3); ++i)
	1071	{
	1072	taus_svec[i*3] = taus_get_long (&(skey->rng0[0]));
	1073	taus_svec[i*3+1] = taus_get_long (&(skey->rng1[0]));
	1074	taus_svec[i*3+2] = taus_get_long (&(skey->rng2[0]));
	1075	}
[137]	1076	SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
	1077
[11]	1078	res = sh_tiger_hash_uint32 ( (char *) &taus_svec[0],
[1]	1079	TIGER_DATA,
[156]	1080	(unsigned long)(TAUS_SAMPLE * sizeof(UINT32)),
[133]	1081	kbuf, KEY_BYT/sizeof(UINT32));
[1]	1082
[137]	1083	SH_MUTEX_LOCK_UNSAFE(mutex_skey);
[13]	1084	for (i = 1; i < 6; ++i)
[11]	1085	{
[13]	1086	res_vec[i] = res[i];
[11]	1087	}
[156]	1088	retval = res[0];
[13]	1089	res_num = 1;
[137]	1090	SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
[1]	1091
[541]	1092	memset(taus_svec, 0, TAUS_SAMPLE * sizeof(UINT32));
[1]	1093
	1094	return retval;
	1095	}
	1096
	1097	/* interval [0,1)
	1098	*/
	1099	double taus_get_double (void *vstate)
	1100	{
	1101	return taus_get_long (vstate) / (4294967296.0 + 1.0) ;
	1102	}
	1103
	1104	#define LCG(n) ((69069 * n) & 0xffffffffUL)
	1105
	1106	/* TAKE CARE: state[0], state[1], state[2] must be > 2,8,16, respectively
	1107	*/
	1108	static void taus_set_from_ulong (void *vstate, unsigned long int s)
	1109	{
	1110	UINT32 state = (UINT32 ) vstate;
	1111
	1112	if (s == 0)
	1113	s = 1; /* default seed is 1 */
	1114
	1115	state[0] = (UINT32)(LCG (s) \| (UINT32) 0x03);
	1116	state[1] = (UINT32)(LCG (state[0]) \| (UINT32) 0x09);
	1117	state[2] = (UINT32)(LCG (state[1]) \| (UINT32) 0x17);
	1118
	1119	/* 'warm up'
	1120	*/
	1121	(void) taus_get_long (state);
	1122	(void) taus_get_long (state);
	1123	(void) taus_get_long (state);
	1124	(void) taus_get_long (state);
	1125	(void) taus_get_long (state);
	1126	(void) taus_get_long (state);
	1127
	1128	return;
	1129	}
	1130
	1131	static void taus_set_from_state (void vstate, void init_state)
	1132	{
	1133	UINT32 state = (UINT32 ) vstate;
	1134	UINT32 state0 = (UINT32 ) init_state;
	1135
	1136	state[0] = state0[0] \| (UINT32) 0x03;
	1137	state[1] = state0[1] \| (UINT32) 0x09;
	1138	state[2] = state0[2] \| (UINT32) 0x17;
	1139
	1140	return;
	1141	}
	1142
	1143
	1144	int taus_seed ()
	1145	{
	1146	char bufx[9 * sizeof(UINT32) + 1];
	1147	int status;
[481]	1148	static unsigned long seed_time = 0;
	1149	static unsigned long seed_counter = 3000;
[137]	1150	unsigned long gtime;
[1]	1151
	1152	SL_ENTER(_("taus_seed"));
	1153
	1154	if (skey->rngI == GOOD)
	1155	{
[481]	1156	++seed_counter;
	1157
	1158	if ( ((sh_unix_longtime () - seed_time) < 1800) &&
	1159	( seed_counter < 3000))
[1]	1160	SL_RETURN( (0), _("taus_seed"));
	1161	}
	1162
[481]	1163	seed_time = sh_unix_longtime ();
	1164	seed_counter = 0;
[1]	1165
	1166	status = sh_entropy (24, bufx);
	1167
	1168	if (!SL_ISERROR(status))
	1169	{
[137]	1170	SH_MUTEX_LOCK_UNSAFE(mutex_skey);
[1]	1171	memcpy (&skey->rng0[0], &bufx[0], 2*sizeof(UINT32));
	1172	memcpy (&skey->rng1[0], &bufx[2sizeof(UINT32)], 2sizeof(UINT32));
	1173	memcpy (&skey->rng2[0], &bufx[4sizeof(UINT32)], 2sizeof(UINT32));
	1174	memset (bufx, 0, 9 * sizeof(UINT32) + 1);
	1175
	1176	skey->rng0[2] = 0;
	1177	skey->rng1[2] = 0;
	1178	skey->rng2[2] = 0;
	1179
	1180	taus_set_from_state( &(skey->rng0[0]), &(skey->rng0[0]));
	1181	taus_set_from_state( &(skey->rng1[0]), &(skey->rng1[0]));
	1182	taus_set_from_state( &(skey->rng2[0]), &(skey->rng2[0]));
	1183
[137]	1184	skey->rngI = GOOD;
	1185	SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
[1]	1186	SL_RETURN( (0), _("taus_seed"));
	1187	}
	1188
	1189	sh_error_handle ((-1), FIL__, __LINE__, status, MSG_ES_ENT,
	1190	_("sh_entropy"));
	1191
	1192	/* emergency backup - unsafe !
	1193	*/
	1194	#ifdef HAVE_GETTIMEOFDAY
[137]	1195	gtime = sh_unix_notime();
[1]	1196	#else
[137]	1197	gtime = seed_time;
[1]	1198	#endif
[137]	1199
	1200	SH_MUTEX_LOCK_UNSAFE(mutex_skey);
	1201	taus_set_from_ulong ( &(skey->rng0[0]), LCG (gtime) );
[1]	1202	taus_set_from_ulong ( &(skey->rng1[0]), LCG (skey->rng0[0]) );
	1203	taus_set_from_ulong ( &(skey->rng2[0]), LCG (skey->rng1[0]) );
	1204	skey->rngI = BAD;
[137]	1205	SH_MUTEX_UNLOCK_UNSAFE(mutex_skey);
[1]	1206
	1207	SL_RETURN( (-1), _("taus_seed"));
	1208	}
	1209
	1210	/@+charint@/
	1211	static unsigned char new_key[] = { 0xA7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xA7 };
	1212	/@-charint@/
	1213	static void copy_four (unsigned char * dest, UINT32 in);
	1214
[20]	1215	int sh_util_set_newkey (const char * new_in)
[1]	1216	{
	1217	size_t i, j = 0;
	1218	size_t len;
	1219	SL_TICKET fp;
	1220	SL_TICKET fout;
	1221	char * key;
[504]	1222	char * path = NULL;
[22]	1223	char * outpath = NULL;
[1]	1224	unsigned char * image = NULL;
	1225	long s = 0;
	1226	long ilen = 0;
	1227	long ii, k = 0;
	1228	UINT32 * h1;
[22]	1229	char * new = NULL;
[1]	1230
	1231	if (0 != sl_is_suid())
	1232	{
[210]	1233	fprintf(stderr, "%s", _("ERROR: insufficient privilege\n"));
[1]	1234	_exit (EXIT_FAILURE);
	1235	/@notreached@/
	1236	return -1; /* braindead MAC OSX compiler needs this */
	1237	}
	1238
[20]	1239	if (new_in == NULL \|\| new_in[0] == '\0')
[1]	1240	{
[210]	1241	fprintf(stderr, "%s",
[1]	1242	_("ERROR: no key given\n Argument must be 'key@path'\n"));
	1243	_exit (EXIT_FAILURE);
	1244	/@notreached@/
	1245	return -1;
	1246	}
[20]	1247
[570]	1248	len = strlen(new_in) + 1;
	1249	if (NULL == (new = calloc(1, len)))
[20]	1250	goto bail_mem;
[570]	1251	memcpy(new, new_in, len);
[20]	1252
[1]	1253	key = new;
	1254	len = strlen(new);
	1255	for (i = 1; i < (len-2); ++i)
	1256	{
	1257	if (new[i] == '@' && new[i+1] == '/')
	1258	{
	1259	j = i+1; new[i] = '\0'; break;
	1260	}
	1261	}
	1262	if (j == 0)
	1263	{
[210]	1264	fprintf(stderr, "%s",
[1]	1265	_("ERROR: no path to executable given\n Argument must be 'key@path'\n"));
[22]	1266	free(new);
[1]	1267	_exit (EXIT_FAILURE);
	1268	/@notreached@/
	1269	return -1;
	1270	}
	1271	else
	1272	path = &new[j];
[22]	1273
	1274	len = strlen(path) + 1 + 4;
[1]	1275	/@-usedef@/
[454]	1276	if (NULL == (outpath = calloc(1,len)))
[1]	1277	goto bail_mem;
	1278	/@-usedef@/
[22]	1279	sl_snprintf (outpath, len, _("%s.out"), path);
[1]	1280
[248]	1281	fp = sl_open_read(FIL__, __LINE__, path, SL_NOPRIV);
[1]	1282	if (SL_ISERROR(fp))
	1283	{
	1284	fprintf(stderr,
	1285	_("ERROR: cannot open %s for read (errnum = %ld)\n"), path, fp);
[22]	1286	free(new); free (outpath);
[1]	1287	_exit (EXIT_FAILURE);
	1288	/@notreached@/
	1289	return -1;
	1290	}
	1291
[248]	1292	fout = sl_open_write(FIL__, __LINE__, outpath, SL_NOPRIV);
[1]	1293	if (SL_ISERROR(fout))
	1294	{
	1295	fprintf(stderr,
	1296	_("ERROR: cannot open %s (errnum = %ld)\n"), outpath, fout);
[22]	1297	free(new); free (outpath);
[1]	1298	_exit (EXIT_FAILURE);
	1299	/@notreached@/
	1300	return -1;
	1301	}
	1302
	1303
[454]	1304	image = calloc(1,4096);
[1]	1305	if (!image)
	1306	goto bail_mem;
	1307	while (0 < (ii = sl_read (fp, &image[s], 4096)))
	1308	{
[473]	1309	unsigned char * ptr;
[1]	1310	ilen += ii;
	1311	s += 4096;
[473]	1312	ptr = realloc (image, (size_t) (4096 + s));
	1313	if (ptr)
	1314	image = ptr;
	1315	else
	1316	{ free(image); image = NULL; }
[1]	1317	if (!image)
	1318	goto bail_mem;
	1319	}
	1320
	1321	printf(_("%ld bytes read\n"), ilen);
	1322
	1323
	1324	for (k = 0; k < (ilen - 8); ++k)
	1325	{
	1326	if (image[k] == new_key[0] &&
	1327	image[k+1] == new_key[1] &&
	1328	image[k+2] == new_key[2] &&
	1329	image[k+3] == new_key[3] &&
	1330	image[k+4] == new_key[4] &&
	1331	image[k+5] == new_key[5] &&
	1332	image[k+6] == new_key[6] &&
	1333	image[k+7] == new_key[7])
	1334	{
[133]	1335	UINT32 kbuf[KEY_BYT/sizeof(UINT32)];
	1336
[210]	1337	printf("%s", _("old key found\n"));
[1]	1338	h1 = sh_tiger_hash_uint32 (key, TIGER_DATA,
[133]	1339	(unsigned long)strlen(key),
	1340	kbuf, KEY_BYT/sizeof(UINT32));
[1]	1341	copy_four( (unsigned char *) &(image[k]), h1[0]);
	1342	copy_four( (unsigned char *) &(image[k+4]), h1[1]);
	1343	(void) sl_write (fout, image, ilen);
	1344	(void) sl_close (fout);
	1345	printf(_("new file %s written\n"), outpath);
[22]	1346	free(new); free (outpath); free(image);
[1]	1347	_exit (EXIT_SUCCESS);
	1348	/@notreached@/
	1349	return 0;
	1350	}
	1351	}
	1352
[210]	1353	fprintf(stderr, "%s",
[1]	1354	_("ERROR: old key not found\n"));
[22]	1355	free(new); free (outpath); free(image);
[1]	1356	_exit (EXIT_FAILURE);
	1357	/@notreached@/
	1358	return -1;
	1359
	1360
	1361	bail_mem:
[210]	1362	fprintf(stderr, "%s",
[1]	1363	_("ERROR: out of memory\n"));
[22]	1364	if (new) free(new);
	1365	if (outpath) free (outpath);
	1366	if (image) free (image);
[1]	1367	_exit (EXIT_FAILURE);
	1368	/@notreached@/
	1369	return -1;
	1370	}
	1371
	1372
	1373
	1374
	1375	/* A simple en-/decoder, based on Vernam cipher. We use the
	1376	* message as salt to hide the key by obtaining a different one-time
	1377	* pad each time.
	1378	* Should be safe against a listener on the network, but not against someone
	1379	* with read access to the binary.
	1380	*/
	1381	void sh_util_encode (char * data, char * salt, int mode, char fill)
	1382	{
	1383	static char cc1[17] = N_("0123456789ABCDEF");
	1384	char cc[17] = "\0";
	1385	register int i, j, j1 = 0, j2 = 0, j3;
	1386	char * dez;
[133]	1387	char hashbuf[KEYBUF_SIZE];
[1]	1388
	1389	SL_ENTER(_("sh_util_encode"));
	1390
	1391	/* init
	1392	*/
	1393	(void) sl_strlcpy( cc, _(cc1), sizeof(cc));
	1394
	1395	/* max 128 bits keyspace
	1396	*/
	1397	memset (skey->vernam, (int)fill, KEY_LEN+1);
	1398
	1399	dez = (char *) &(skey->ErrFlag[0]);
	1400	sh_util_cpylong (skey->vernam, dez, 4);
	1401	dez = (char *) &(skey->ErrFlag[1]);
	1402	sh_util_cpylong (&skey->vernam[4], dez, 4);
	1403
	1404	skey->vernam[KEY_LEN] = '\0';
	1405
	1406	(void) sl_strlcpy(skey->vernam,
[133]	1407	sh_tiger_hash(skey->vernam, TIGER_DATA, KEY_LEN,
	1408	hashbuf, sizeof(hashbuf)),
[1]	1409	KEY_LEN+1);
	1410
	1411	(void) sl_strlcpy(skey->vernam,
[133]	1412	sh_util_hmac_tiger (skey->vernam, salt, strlen(salt),
	1413	hashbuf, sizeof(hashbuf)),
	1414	KEY_LEN+1);
[1]	1415
	1416	(void) sl_strlcpy(skey->vernam,
[133]	1417	sh_util_hmac_tiger (skey->vernam, (char*) new_key, 8,
	1418	hashbuf, sizeof(hashbuf)),
[1]	1419	KEY_LEN+1);
	1420
	1421	/* The following routine adds/subtracts data[j] and vernam[j] mod 16.
	1422	*/
	1423	j = 0;
	1424	while (j < KEY_LEN)
	1425	{
	1426	for (i = 0; i < 16; ++i)
	1427	{
	1428	if (cc[i] == data[j]) j1 = i;
	1429	if (cc[i] == skey->vernam[j]) j2 = i;
	1430	}
	1431	if (mode == 0)
	1432	{
	1433	j3 = j1 + j2;
	1434	if (j3 > 15) j3 -= 16;
	1435	data[j] = cc[j3];
	1436	}
	1437	else
	1438	{
	1439	j3 = j1 - j2;
	1440	if (j3 < 0) j3 += 16;
	1441	data[j] = cc[j3];
	1442	}
	1443	++j;
	1444	}
	1445	SL_RET0(_("sh_util_encode"));
	1446	}
	1447
	1448	/* server mode
	1449	*/
[20]	1450	int sh_util_setserver (const char * dummy)
[1]	1451	{
	1452	SL_ENTER(_("sh_util_setserver"));
	1453
[20]	1454	(void) dummy;
	1455	sh.flag.isserver = GOOD;
[1]	1456	SL_RETURN((0),_("sh_util_setserver"));
	1457	}
	1458
	1459
[20]	1460	int sh_util_setlooptime (const char * str)
[1]	1461	{
	1462	int i = atoi (str);
	1463
	1464	SL_ENTER(_("sh_util_setlooptime"));
	1465
	1466	if (i >= 0 && i < INT_MAX) {
	1467	sh.looptime = i;
	1468	SL_RETURN((0),_("sh_util_setlooptime"));
	1469	} else {
	1470	sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
	1471	_("loop time"), str);
	1472	SL_RETURN((-1),_("sh_util_setlooptime"));
	1473	}
	1474	}
	1475
	1476	#if defined (SH_WITH_CLIENT) \|\| defined (SH_STANDALONE)
[20]	1477	int sh_util_setchecksum (const char * str)
[1]	1478	{
	1479	static int reject = 0;
	1480
	1481	SL_ENTER(_("sh_util_setchecksum"));
	1482
	1483	if (reject == 1)
	1484	SL_RETURN((0), _("sh_util_setchecksum"));
	1485	reject = 1;
	1486
	1487	if (sl_strncmp (str, _("init"), sizeof("init")-1) == 0)
	1488	{
	1489	sh.flag.checkSum = SH_CHECK_INIT;
	1490	}
	1491	else if (sl_strncmp (str, _("update"), sizeof("update")-1) == 0)
	1492	{
	1493	if (S_TRUE == file_is_remote())
	1494	{
	1495	sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
	1496	_("checksum testing"), str);
	1497	SL_RETURN((-1), _("sh_util_setchecksum"));
	1498	}
	1499	else
	1500	{
	1501	sh.flag.checkSum = SH_CHECK_CHECK;
	1502	sh.flag.update = S_TRUE;
	1503	}
	1504	}
	1505	else if (sl_strncmp (str, _("check"), sizeof("check")-1) == 0)
	1506	{
	1507	sh.flag.checkSum = SH_CHECK_CHECK;
	1508	}
	1509	/*
	1510	else if (sl_strncmp (str, _("update"), sizeof("update")-1) == 0)
	1511	{
	1512	sh.flag.checkSum = SH_CHECK_INIT;
	1513	sh.flag.update = S_TRUE;
	1514	}
	1515	*/
	1516	else if (sl_strncmp (str, _("none"), sizeof("none")-1) == 0)
	1517	{
	1518	sh.flag.checkSum = SH_CHECK_NONE;
	1519	}
	1520	else
	1521	{
	1522	sh_error_handle ((-1), FIL__, __LINE__, EINVAL, MSG_EINVALS,
	1523	_("checksum testing"), str);
	1524	SL_RETURN((-1), _("sh_util_setchecksum"));
	1525	}
	1526	SL_RETURN((0), _("sh_util_setchecksum"));
	1527	}
	1528	#endif
	1529
	1530	/@+charint@/
	1531	unsigned char TcpFlag[8][PW_LEN+1] = {
	1532	#if (POS_TF == 1)
	1533	{ 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
	1534	#endif
	1535	{ 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
	1536	#if (POS_TF == 2)
	1537	{ 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
	1538	#endif
	1539	{ 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
	1540	#if (POS_TF == 3)
	1541	{ 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
	1542	#endif
	1543	{ 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
	1544	#if (POS_TF == 4)
	1545	{ 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
	1546	#endif
	1547	{ 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
	1548	#if (POS_TF == 5)
	1549	{ 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
	1550	#endif
	1551	{ 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
	1552	#if (POS_TF == 6)
	1553	{ 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
	1554	#endif
	1555	{ 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
	1556	#if (POS_TF == 7)
	1557	{ 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
	1558	#endif
	1559	{ 0xFF,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xFF,0x00 },
	1560	#if (POS_TF == 8)
	1561	{ 0xF7,0xC3,0x12,0xAA,0xAA,0x12,0xC3,0xF7,0x00 },
	1562	#endif
	1563	};
	1564	/@-charint@/
	1565
	1566	/* initialize a key to a random value
	1567	* rev 0.8
	1568	*/
	1569	int sh_util_keyinit (char * buf, long size)
	1570	{
	1571	UINT32 bufy[6];
	1572	int i;
	1573	int status = 0;
	1574	char * p;
[133]	1575	char hashbuf[KEYBUF_SIZE];
[1]	1576
	1577	SL_ENTER(_("sh_util_keyinit"));
	1578
	1579	ASSERT((size <= KEY_LEN+1), _("size <= KEY_LEN+1"))
	1580
	1581	if (size > KEY_LEN+1)
	1582	size = KEY_LEN+1;
	1583
	1584	/* seed / re-seed the PRNG if required
	1585	*/
	1586	status = taus_seed ();
	1587
	1588	if (status == -1)
	1589	sh_error_handle ((-1), FIL__, __LINE__, -1, MSG_ES_KEY1,
	1590	_("taus_seed"));
	1591
	1592	for (i = 0; i < 6; ++i)
[170]	1593	bufy[i] = taus_get();
[1]	1594
	1595	p = sh_tiger_hash ((char *) bufy, TIGER_DATA,
[133]	1596	(unsigned long)(6*sizeof(UINT32)),
	1597	hashbuf, sizeof(hashbuf));
[1]	1598
	1599	i = sl_strlcpy(buf, p, (size_t)size);
	1600
	1601	memset (bufy, 0, 6*sizeof(UINT32));
	1602
	1603	if ((status == 0) && (!SL_ISERROR(i)) )
	1604	SL_RETURN((0),_("sh_util_keyinit"));
	1605
	1606	if (SL_ISERROR(i))
	1607	sh_error_handle ((-1), FIL__, __LINE__, i, MSG_ES_KEY2,
	1608	_("sl_strlcpy"));
	1609
	1610	SL_RETURN((-1),_("sh_util_keyinit"));
	1611	}
	1612
	1613	#if defined(SH_WITH_CLIENT) \|\| defined(SH_STANDALONE)
	1614
	1615	static unsigned char sh_obscure_index[256];
[76]	1616	static int sh_obscure_no_check = S_FALSE;
[1]	1617
[68]	1618	int sh_util_valid_utf8 (const unsigned char * str)
	1619	{
[76]	1620	const int sh_val_utf8_1 = 1;
	1621	const int sh_val_utf8_2 = 2;
	1622	const int sh_val_utf8_3 = 3;
	1623	const int sh_val_utf8_4 = 4;
	1624
[170]	1625	size_t len = strlen((const char *)str);
[68]	1626	size_t l = 0;
[76]	1627	int typ = 0;
	1628	unsigned char c = '\0';
	1629	unsigned char c2[2] = { 0x00, 0x00 };
	1630	unsigned char c3[3] = { 0x00, 0x00, 0x00 };
[68]	1631
[76]	1632
[68]	1633	#define SH_VAL_UTF8_1 ((c != '\0') && ((c & 0x80) == 0x00))
	1634	#define SH_VAL_UTF8_2 ((c != '\0') && ((c & 0xE0) == 0xC0)) /* 110x xxxx */
	1635	#define SH_VAL_UTF8_3 ((c != '\0') && ((c & 0xF0) == 0xE0)) /* 1110 xxxx */
	1636	#define SH_VAL_UTF8_4 ((c != '\0') && ((c & 0xF8) == 0xF0)) /* 1111 0xxx */
	1637	#define SH_VAL_UTF8_N ((c != '\0') && ((c & 0xC0) == 0x80)) /* 10xx xxxx */
[76]	1638	#define SH_VAL_BAD ((c == '"') \|\| (c == '\t') \|\| (c == '\b') \|\| \
	1639	(c == '\f') \|\| (c == '\n') \|\| \
[68]	1640	(c == '\r') \|\| (c == '\v') \|\| iscntrl((int) c) \|\| \
	1641	(c != ' ' && !isgraph ((int) c)))
	1642
	1643	while(l < len)
	1644	{
	1645	c = str[l];
	1646
	1647	if (SH_VAL_UTF8_1)
	1648	{
[76]	1649	if (!(SH_VAL_BAD && (sh_obscure_index[c] != 1)))
	1650	{
	1651	typ = sh_val_utf8_1;
	1652	++l; continue;
	1653	}
	1654	else
	1655	{
	1656	return S_FALSE;
	1657	}
[68]	1658	}
	1659	else if (SH_VAL_UTF8_2)
	1660	{
[76]	1661	typ = sh_val_utf8_2;
	1662	c2[0] = c;
	1663	if ((c & 0x3e) != 0x00) /* !(overlong 2-byte seq.) */
	1664	{
	1665	++l;
	1666	if (l != len) {
	1667	c = str[l];
	1668	if(SH_VAL_UTF8_N) {
	1669	c2[1] = c;
	1670	++l; continue;
	1671	}
	1672	else {
	1673	return S_FALSE;
	1674	}
	1675	}
	1676	else {
	1677	return S_FALSE;
	1678	}
	1679	}
	1680	else
	1681	{
	1682	return S_FALSE; /* overlong 2-byte seq. */
	1683	}
[68]	1684	}
	1685	else if (SH_VAL_UTF8_3)
	1686	{
[76]	1687	typ = sh_val_utf8_3;
	1688	c3[0] = c;
[68]	1689	++l; if (l == len) return S_FALSE; c = str[l];
	1690	if(!SH_VAL_UTF8_N) return S_FALSE;
	1691	if (((str[l-1] & 0x1F) == 0x00) && ((c & 0x60) == 0x00))
	1692	return S_FALSE; /* overlong 3-byte seq. */
[76]	1693	c3[1] = c;
[68]	1694	++l; if (l == len) return S_FALSE; c = str[l];
	1695	if(!SH_VAL_UTF8_N) return S_FALSE;
[76]	1696	c3[2] = c;
[68]	1697	++l; continue;
	1698	}
	1699	else if (SH_VAL_UTF8_4)
	1700	{
[76]	1701	typ = sh_val_utf8_4;
[68]	1702	++l; if (l == len) return S_FALSE; c = str[l];
	1703	if(!SH_VAL_UTF8_N) return S_FALSE;
	1704	if (((str[l-1] & 0x0F) == 0x00) && ((c & 0x70) == 0x00))
	1705	return S_FALSE; /* overlong 4-byte seq. */
	1706	++l; if (l == len) return S_FALSE; c = str[l];
	1707	if(!SH_VAL_UTF8_N) return S_FALSE;
	1708	++l; if (l == len) return S_FALSE; c = str[l];
	1709	if(!SH_VAL_UTF8_N) return S_FALSE;
	1710	++l; continue;
	1711	}
	1712	return S_FALSE;
	1713	}
[76]	1714
	1715	/* last character is invisible (space or else)
	1716	*/
	1717	if (typ == sh_val_utf8_1)
	1718	{
	1719	if (c != ' ')
	1720	return S_TRUE;
	1721	else
	1722	return S_FALSE;
	1723	}
	1724	else if (typ == sh_val_utf8_2)
	1725	{
	1726	if (c2[0] == 0xC2 && c2[1] == 0xA0) /* nbsp */
	1727	return S_FALSE;
	1728	else
	1729	return S_TRUE;
	1730	}
	1731	else if (typ == sh_val_utf8_3)
	1732	{
	1733	if (c3[0] == 0xE2)
	1734	{
	1735	if (c3[1] == 0x80 && c3[2] >= 0x80 && c3[2] <= 0x8F)
	1736	return S_FALSE; /* various spaces, left-to-right, right-to-left */
	1737	else if (c3[1] == 0x80 && (c3[2] == 0xA8 \|\| c3[2] == 0xA9 \|\|
	1738	c3[2] == 0xAD \|\| c3[2] == 0xAF))
	1739	return S_FALSE; /* line sep, para sep, zw word joiner, nnbsp */
	1740	else if (c3[1] == 0x81 && (c3[2] == 0xA0 \|\| c3[2] == 0xA1 \|\|
	1741	c3[2] == 0x9F))
	1742	return S_FALSE; /* word joiner, function app, math space */
	1743	else
	1744	return S_TRUE;
	1745	}
	1746	else if (c3[0] == 0xE3 && c3[1] == 0x80 && c3[2] == 0x80)
	1747	{
	1748	return S_FALSE; /* ideographic space */
	1749	}
	1750	else if (c3[0] == 0xEF && c3[1] == 0xBB && c3[2] == 0xBF)
	1751	{
	1752	return S_FALSE; /* zwnbsp */
	1753	}
	1754	else
	1755	{
	1756	return S_TRUE;
	1757	}
	1758	}
	1759	else
	1760	{
	1761	return S_TRUE;
	1762	}
[68]	1763	}
	1764
	1765
[22]	1766	int sh_util_obscure_ok (const char * str)
[1]	1767	{
	1768	unsigned long i;
[22]	1769	char * endptr = NULL;
[1]	1770
[29]	1771	SL_ENTER(_("sh_util_obscure_ok"));
[1]	1772
	1773	if (0 == sl_strncmp("all", str, 3))
	1774	{
	1775	for (i = 0; i < 255; ++i)
	1776	{
	1777	sh_obscure_index[i] = (unsigned char)1;
	1778	}
[76]	1779	sh_obscure_no_check = S_TRUE;
[29]	1780	SL_RETURN(0, _("sh_util_obscure_ok"));
[1]	1781	}
	1782
[76]	1783	sh_obscure_no_check = S_FALSE;
	1784
[1]	1785	for (i = 0; i < 255; ++i)
	1786	{
	1787	sh_obscure_index[i] = (unsigned char)0;
	1788	}
	1789
[22]	1790	i = strtoul (str, &endptr, 0);
	1791	if (i > 255)
	1792	{
[29]	1793	SL_RETURN(-1, _("sh_util_obscure_ok"));
[22]	1794	}
	1795	sh_obscure_index[i] = (unsigned char)1;
	1796	if (*endptr == ',')
	1797	++endptr;
	1798
[1]	1799	while (*endptr != '\0')
	1800	{
	1801	i = strtoul (endptr, &endptr, 0);
	1802	if (i > 255)
	1803	{
[29]	1804	SL_RETURN(-1, _("sh_util_obscure_ok"));
[1]	1805	}
	1806	sh_obscure_index[i] = (unsigned char)1;
	1807	if (*endptr == ',')
	1808	++endptr;
	1809	}
[29]	1810	SL_RETURN(0, _("sh_util_obscure_ok"));
[1]	1811	}
	1812
[68]	1813	static int sh_obscure_check_utf8 = S_FALSE;
	1814
	1815	int sh_util_obscure_utf8 (const char * c)
	1816	{
	1817	int i;
	1818	SL_ENTER(_("sh_util_obscure_utf8"));
	1819	i = sh_util_flagval(c, &(sh_obscure_check_utf8));
[76]	1820	if (sh_obscure_check_utf8 == S_TRUE)
	1821	sh_obscure_no_check = S_FALSE;
[68]	1822	SL_RETURN(i, _("sh_util_obscure_utf8"));
	1823	}
	1824
	1825
[373]	1826	int sh_util_obscurename (ShErrLevel level, const char * name_orig, int flag)
[1]	1827	{
[481]	1828	const unsigned char * name = (const unsigned char *) name_orig;
[1]	1829	char * safe;
	1830	unsigned int i;
[76]	1831	size_t len = 0;
[1]	1832
	1833	SL_ENTER(_("sh_util_obscurename"));
	1834
	1835	ASSERT_RET((name != NULL), _("name != NULL"), (0))
	1836
[76]	1837	if (sh_obscure_no_check == S_FALSE)
[68]	1838	{
[76]	1839	if (sh_obscure_check_utf8 != S_TRUE)
[68]	1840	{
[76]	1841	/* -- Check name. --
	1842	*/
	1843	while (*name != '\0')
	1844	{
	1845	if ( (name) > 0x7F \|\| (name) == '"' \|\| (*name) == '\t' \|\|
	1846	(name) == '\b' \|\| (name) == '\f' \|\|
	1847	(name) == '\n' \|\| (name) == '\r' \|\|
	1848	(name) == '\v' \|\| iscntrl((int) name) \|\|
	1849	((name) != ' ' && !isgraph ((int) name)) )
	1850	{
	1851	i = (unsigned char) *name;
	1852	if (sh_obscure_index[i] != (unsigned char)1)
	1853	{
	1854	goto err;
	1855	}
	1856	}
	1857	name++; ++len;
	1858	}
	1859
	1860	/* Check for blank at end of name
	1861	*/
	1862	if ((len > 0) && (name_orig[len-1] == ' '))
	1863	{
	1864	goto err;
	1865	}
[68]	1866	}
[76]	1867	else
[1]	1868	{
[76]	1869	if (S_FALSE == sh_util_valid_utf8(name))
[1]	1870	{
[68]	1871	goto err;
[1]	1872	}
[76]	1873	SL_RETURN((0),_("sh_util_obscurename"));
[1]	1874	}
	1875	}
[76]	1876
[1]	1877	SL_RETURN((0),_("sh_util_obscurename"));
[68]	1878
	1879	err:
[76]	1880
[68]	1881	if (flag == S_TRUE)
	1882	{
	1883	safe = sh_util_safe_name (name_orig);
	1884	sh_error_handle (level, FIL__, __LINE__, 0, MSG_FI_OBSC,
	1885	safe);
	1886	SH_FREE(safe);
	1887	}
	1888	SL_RETURN((-1),_("sh_util_obscurename"));
[1]	1889	}
[68]	1890
[1]	1891	#endif
	1892
	1893	/* returns freshly allocated memory, return value should be free'd
	1894	*/
[34]	1895	char * sh_util_dirname(const char * fullpath)
[1]	1896	{
	1897	char * retval;
[34]	1898	size_t len;
[93]	1899	char * tmp;
[1]	1900
[34]	1901	SL_ENTER(_("sh_util_dirname"));
[1]	1902
	1903	ASSERT_RET ((fullpath != NULL), _("fullpath != NULL"), (NULL))
[93]	1904	ASSERT_RET ((fullpath == '/'), _("fullpath == '/'"), (NULL))
[1]	1905
[93]	1906	retval = sh_util_strdup(fullpath);
[1]	1907
[93]	1908	tmp = retval;
	1909	while (*tmp == '/') ++tmp;
[34]	1910
[93]	1911	/* (1) only leading slashes -- return exact copy
	1912	*/
	1913	if (*tmp == '\0')
	1914	{
	1915	SL_RETURN(retval, _("sh_util_dirname"));
	1916	}
	1917
	1918	/* (2) there are non-slash characters, so delete trailing slashes
	1919	*/
	1920	len = sl_strlen (retval); /* retval[len] is terminating '\0' */
	1921
	1922	while (len > 1 && retval[len-1] == '/') /* delete trailing slash */
	1923	{
	1924	retval[len-1] = '\0';
	1925	--len;
	1926	}
	1927
	1928	/* (3) now delete all non-slash characters up to the preceding slash
	1929	*/
	1930	while (len > 1 && retval[len-1] != '/') {
	1931	retval[len-1] = '\0';
[34]	1932	--len;
[1]	1933	}
	1934
[93]	1935	/* (4a) only leading slashes left, so return this
[1]	1936	*/
[93]	1937	if (&(retval[len]) == tmp)
	1938	{
	1939	SL_RETURN(retval, _("sh_util_dirname"));
[34]	1940	}
[1]	1941
[93]	1942	/* (4b) strip trailing slash(es) of parent directory
	1943	*/
	1944	while (len > 1 && retval[len-1] == '/') {
	1945	retval[len-1] = '\0';
	1946	--len;
	1947	}
	1948	SL_RETURN(retval, _("sh_util_dirname"));
[1]	1949
	1950	}
	1951
	1952	/* returns freshly allocated memory, return value should be free'd
	1953	*/
[34]	1954	char * sh_util_basename(const char * fullpath)
[1]	1955	{
[93]	1956	char * retval = NULL;
	1957	const char * tmp;
	1958	char * tmp2;
	1959	char * c;
	1960	size_t len;
[1]	1961
[34]	1962	SL_ENTER(_("sh_util_basename"));
[1]	1963
	1964	ASSERT_RET ((fullpath != NULL), _("fullpath != NULL"), (NULL))
	1965
[93]	1966	tmp = fullpath; while (*tmp == '/') ++tmp;
	1967	if (*tmp == '\0')
[34]	1968	{
[93]	1969	retval = sh_util_strdup(fullpath);
[34]	1970	}
	1971	else
	1972	{
[93]	1973	tmp2 = sh_util_strdup(tmp);
	1974	len = sl_strlen (tmp2);
	1975
	1976	while (len > 1 && tmp2[len-1] == '/')
[34]	1977	{
[93]	1978	tmp2[len-1] = '\0';
	1979	--len;
	1980	}
	1981
[382]	1982	if (tmp2) /* for llvm/clang analyzer */
[93]	1983	{
[382]	1984	c = strrchr(tmp2, '/');
	1985	if (c)
	1986	{
	1987	retval = sh_util_strdup(++c);
	1988	SH_FREE(tmp2);
	1989	}
	1990	else
	1991	{
	1992	retval = tmp2;
	1993	}
[34]	1994	}
	1995	}
[1]	1996
[34]	1997	SL_RETURN(retval, _("sh_util_basename"));
[1]	1998	}
	1999
[185]	2000	#define SH_ESCAPE_SPACE 1
	2001	#define SH_DONT_ESCAPE_SPACE 0
	2002	char * sh_util_safe_name_int (const char * name, int escape_space);
	2003
	2004	char * sh_util_safe_name (const char * name)
	2005	{
	2006	return sh_util_safe_name_int (name, SH_ESCAPE_SPACE);
	2007	}
	2008
	2009	char * sh_util_safe_name_keepspace (const char * name)
	2010	{
	2011	return sh_util_safe_name_int (name, SH_DONT_ESCAPE_SPACE);
	2012	}
	2013
[1]	2014	/* returns freshly allocated memory, return value should be free'd
	2015	*/
[185]	2016	char * sh_util_safe_name_int (const char * name, int escape_space)
[1]	2017	{
	2018	register int i = 0;
	2019	const char * p;
	2020	char * retval;
	2021	char oct[32];
	2022	char format[16];
[34]	2023	size_t len;
[1]	2024
	2025	SL_ENTER(_("sh_util_safe_name"));
	2026
	2027	if (name == NULL)
	2028	{
	2029	/* return an allocated array
	2030	*/
	2031	retval = SH_ALLOC(7);
	2032	(void) sl_strlcpy(retval, _("(null)"), 7);
	2033	SL_RETURN(retval, _("sh_util_safe_name"));
	2034	}
	2035
	2036	/*
	2037	ASSERT_RET ((name != NULL), _("name != NULL"), _("NULL"))
	2038	*/
	2039
[34]	2040	len = sl_strlen(name);
	2041	p = name;
	2042
[1]	2043	#ifdef SH_USE_XML
[34]	2044	if (sl_ok_muls (6, len) && sl_ok_adds ((6*len), 2))
	2045	{ retval = SH_ALLOC(6 * len + 2); }
	2046	else
	2047	{
	2048	/* return an allocated array
	2049	*/
	2050	retval = SH_ALLOC(11);
	2051	(void) sl_strlcpy(retval, _("(overflow)"), 11);
	2052	SL_RETURN(retval, _("sh_util_safe_name"));
	2053	}
[1]	2054	#else
[34]	2055	if (sl_ok_muls (4, len) && sl_ok_adds ((4*len), 2))
	2056	{ retval = SH_ALLOC(4 * len + 2); }
	2057	else
	2058	{
	2059	/* return an allocated array
	2060	*/
	2061	retval = SH_ALLOC(11);
	2062	(void) sl_strlcpy(retval, _("(overflow)"), 11);
	2063	SL_RETURN(retval, _("sh_util_safe_name"));
	2064	}
[1]	2065	#endif
	2066
	2067	(void) sl_strncpy(format, _("%c%03o"), 16);
	2068
	2069	while (*p != '\0') {
	2070	/* Most frequent cases first
	2071	*/
	2072	if ( ((p) >= 'a' && (p) <= 'z') \|\| ((p) == '/') \|\| ((p) == '.') \|\|
	2073	((p) >= '0' && (p) <= '9') \|\|
	2074	((p) >= 'A' && (p) <= 'Z')) {
	2075	retval[i] = *p;
	2076	} else if ( (p) == '\\') { / backslash */
	2077	retval[i] = '\\'; ++i;
	2078	retval[i] = '\\';
	2079	} else if ( (p) == '\n') { / newline */
	2080	retval[i] = '\\'; ++i;
	2081	retval[i] = 'n';
	2082	} else if ( (p) == '\b') { / backspace */
	2083	retval[i] = '\\'; ++i;
	2084	retval[i] = 'b';
	2085	} else if ( (p) == '\r') { / carriage return */
	2086	retval[i] = '\\'; ++i;
	2087	retval[i] = 'r';
	2088	} else if ( (p) == '\t') { / horizontal tab */
	2089	retval[i] = '\\'; ++i;
	2090	retval[i] = 't';
	2091	} else if ( (p) == '\v') { / vertical tab */
	2092	retval[i] = '\\'; ++i;
	2093	retval[i] = 'v';
	2094	} else if ( (p) == '\f') { / form-feed */
	2095	retval[i] = '\\'; ++i;
	2096	retval[i] = 'f';
	2097	#ifdef WITH_DATABASE
	2098	} else if ( (p) == '\'') { / single quote */
	2099	retval[i] = '\\'; ++i;
	2100	retval[i] = '\'';
	2101	#endif
	2102	} else if ( (p) == ' ') { / space */
[185]	2103	if (escape_space) {
	2104	retval[i] = '\\'; ++i;
	2105	retval[i] = ' ';
	2106	}
	2107	else {
	2108	retval[i] = *p;
	2109	}
[1]	2110	#ifdef SH_USE_XML
	2111	} else if ( (p) == '"') { / double quote */
	2112	retval[i] = '&'; ++i;
	2113	retval[i] = 'q'; ++i;
	2114	retval[i] = 'u'; ++i;
	2115	retval[i] = 'o'; ++i;
	2116	retval[i] = 't'; ++i;
	2117	retval[i] = ';';
	2118	} else if ( (p) == '&') { / ampersand */
	2119	retval[i] = '&'; ++i;
	2120	retval[i] = 'a'; ++i;
	2121	retval[i] = 'm'; ++i;
	2122	retval[i] = 'p'; ++i;
	2123	retval[i] = ';';
	2124	} else if ( (p) == '<') { / left angle */
	2125	retval[i] = '&'; ++i;
	2126	retval[i] = 'l'; ++i;
	2127	retval[i] = 't'; ++i;
	2128	retval[i] = ';';
	2129	} else if ( (p) == '>') { / right angle */
	2130	retval[i] = '&'; ++i;
	2131	retval[i] = 'g'; ++i;
	2132	retval[i] = 't'; ++i;
	2133	retval[i] = ';';
	2134	#else
	2135	} else if ( (p) == '"') { / double quote */
	2136	retval[i] = '\\'; ++i;
	2137	retval[i] = '\"';
	2138	#endif
	2139	} else if (!isgraph ((int) p)) { / not printable */
	2140	/@-bufferoverflowhigh -formatconst@/
[22]	2141	/* flawfinder: ignore */
[1]	2142	sprintf(oct, format, '\\', /* known to fit */
	2143	(unsigned char) *p);
	2144	/@+bufferoverflowhigh +formatconst@/
	2145	retval[i] = oct[0]; ++i;
	2146	retval[i] = oct[1]; ++i;
	2147	retval[i] = oct[2]; ++i;
	2148	retval[i] = oct[3];
	2149	} else {
	2150	retval[i] = *p;
	2151	}
	2152	++p;
	2153	++i;
	2154	}
	2155	retval[i] = '\0';
	2156	SL_RETURN(retval, _("sh_util_safe_name"));
	2157	}
	2158
[149]	2159	int sh_util_isnum (const char *str)
[1]	2160	{
[149]	2161	const char *p = str;
[1]	2162
	2163	SL_ENTER(_("sh_util_isnum"));
	2164
	2165	ASSERT_RET ((str != NULL), _("str != NULL"), (-1))
	2166
	2167	while (p) {
	2168	if (!isdigit((int) *p) )
	2169	SL_RETURN((-1), _("sh_util_isnum"));
	2170	++p;
	2171	}
	2172	SL_RETURN((0), _("sh_util_isnum"));
	2173	}
	2174
[149]	2175	char * sh_util_strconcat (const char * arg1, ...)
[1]	2176	{
[34]	2177	size_t length, l2;
[1]	2178	char * s;
	2179	char * strnew;
	2180	va_list vl;
	2181
	2182	SL_ENTER(_("sh_util_strconcat"));
	2183
	2184	ASSERT_RET ((arg1 != NULL), _("arg1 != NULL"), (NULL))
	2185
	2186	length = sl_strlen (arg1) + 1;
	2187
	2188	va_start (vl, arg1);
	2189	s = va_arg (vl, char * );
	2190	while (s != NULL)
	2191	{
[34]	2192	l2 = sl_strlen (s);
	2193	if (sl_ok_adds(length, l2))
	2194	length += l2;
	2195	else
	2196	SL_RETURN(NULL, _("sh_util_strconcat"));
[1]	2197	s = va_arg (vl, char * );
	2198	}
	2199	va_end (vl);
	2200
[34]	2201	if (sl_ok_adds(length, 2))
	2202	strnew = SH_ALLOC( length + 2 );
	2203	else
	2204	SL_RETURN(NULL, _("sh_util_strconcat"));
	2205
[560]	2206	/* cppcheck-suppress uninitvar */
[1]	2207	strnew[0] = '\0';
	2208
	2209	(void) sl_strlcpy (strnew, arg1, length + 2);
	2210
	2211	va_start (vl, arg1);
	2212	s = va_arg (vl, char * );
	2213	while (s)
	2214	{
	2215	(void) sl_strlcat (strnew, s, length + 2);
	2216	s = va_arg (vl, char * );
	2217	}
	2218	va_end (vl);
	2219
	2220	SL_RETURN(strnew, _("sh_util_strconcat"));
	2221	}
	2222
[167]	2223	static const char bto64_0[] = N_("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789()");
	2224	static char bto64[65] = { '\0' };
[1]	2225
[167]	2226
[226]	2227	size_t sh_util_base64_enc (unsigned char * out,
	2228	const unsigned char * instr,
[167]	2229	size_t lin)
	2230	{
	2231	int ll;
	2232	unsigned char a, b, c;
	2233	size_t len = 0;
	2234	size_t j = 0;
	2235
	2236	start:
	2237	if (bto64[0] != '\0')
	2238	{
[444]	2239	if (instr /* && instr //* need to handle binary data */)
[167]	2240	{
	2241	if (lin == 0)
[170]	2242	lin = strlen((const char *)instr);
[167]	2243
[444]	2244	if (lin > 0)
	2245	{
	2246	do {
	2247	ll = 0;
	2248
	2249	if (len < lin)
	2250	{ a = *instr; ++instr; ++len; ++ll; }
	2251	else
	2252	{ a = 0; }
	2253	if (len < lin)
	2254	{ b = *instr; ++instr; ++len; ++ll; }
	2255	else
	2256	{ b = 0; }
	2257	if (len < lin)
	2258	{ c = *instr; ++instr; ++len; ++ll; }
	2259	else
	2260	{ c = 0; }
	2261
	2262	*out = bto64[ a >> 2 ];
	2263	++j; ++out;
	2264	*out = bto64[ ((a & 0x03) << 4) \| ((b & 0xf0) >> 4) ];
	2265	++j; ++out;
	2266	*out = (unsigned char) (ll > 1 ? bto64[ ((b & 0x0f) << 2) \| ((c & 0xc0) >> 6) ] : '?');
	2267	++j; ++out;
	2268	*out = (unsigned char) (ll > 2 ? bto64[ c & 0x3f ] : '?');
	2269	++j; ++out;
	2270	} while (len < lin);
	2271	}
[167]	2272	}
	2273	*out = '\0';
	2274	return j;
	2275	}
	2276
	2277	memcpy(bto64, _(bto64_0), 65);
	2278	goto start;
	2279	}
	2280
	2281	size_t sh_util_base64_enc_alloc (char *out, const char in, size_t inlen)
	2282	{
	2283	size_t outlen = SH_B64_SIZ(inlen);
	2284
	2285	if (inlen > outlen) /* overflow */
	2286	{
	2287	*out = NULL;
	2288	return 0;
	2289	}
	2290
	2291	*out = SH_ALLOC(outlen);
[170]	2292	return sh_util_base64_enc((unsigned char )out, (const unsigned char *)in, inlen);
[167]	2293	}
	2294
[226]	2295	size_t sh_util_base64_dec (unsigned char *out,
	2296	const unsigned char *in,
[167]	2297	size_t lin)
	2298	{
	2299	size_t i;
	2300	unsigned char c;
	2301	unsigned char b;
	2302	size_t lout = 0;
[481]	2303	unsigned int w = 0;
[167]	2304
	2305	if (out && in)
	2306	{
	2307	if (lin == 0)
[170]	2308	lin = strlen((const char *)in);
[167]	2309
	2310	for (i = 0; i < lin; i++)
	2311	{
	2312	c = *in; ++in;
	2313	b = 0;
	2314
	2315	if ((c >= 'A') && (c <= 'Z'))
	2316	{
	2317	b = (c - 'A');
	2318	}
	2319	else if ((c >= 'a') && (c <= 'z'))
	2320	{
	2321	b = (c - 'a' + 26);
	2322	}
	2323	else if ((c >= '0') && (c <= '9'))
	2324	{
	2325	b = (c - '0' + 52);
	2326	}
	2327	else if (c == '(' \|\| c == '+')
	2328	{
	2329	b = 62;
	2330	}
	2331	else if (c == ')' \|\| c == '/')
	2332	{
[170]	2333	b = 63;
[167]	2334	}
	2335	else if (c == '?' \|\| c == '=')
	2336	{
	2337	/* last byte was written to, but will now get
	2338	* truncated
	2339	*/
	2340	if (lout > 0) --lout;
	2341	break;
	2342	}
	2343
	2344	if (w == 0)
	2345	{
	2346	*out = (b << 2) & 0xfc;
	2347	++lout;
	2348	}
	2349	else if (w == 1)
	2350	{
	2351	*out \|= (b >> 4) & 0x03;
	2352	++out;
	2353	*out = (b << 4) & 0xf0;
	2354	++lout;
	2355	}
	2356	else if (w == 2)
	2357	{
	2358	*out \|= (b >> 2) & 0x0f;
	2359	++out;
	2360	*out = (b << 6) & 0xc0;
	2361	++lout;
	2362	}
	2363	else if (w == 3)
	2364	{
	2365	*out \|= b & 0x3f;
	2366	++out;
	2367	}
	2368
	2369	++w;
	2370
	2371	if (w == 4)
	2372	{
	2373	w = 0;
	2374	}
	2375	}
	2376	*out = '\0';
	2377	}
	2378	return lout;
	2379	}
	2380
	2381	size_t sh_util_base64_dec_alloc (unsigned char *out, const unsigned char in,
	2382	size_t lin)
	2383	{
	2384	size_t lout = 3 * (lin / 4) + 2;
	2385
	2386	*out = SH_ALLOC(lout);
	2387
	2388	return sh_util_base64_dec (*out, in, lin);
	2389	}
	2390
	2391
[1]	2392	#ifdef HAVE_REGEX_H
	2393
	2394	#include <regex.h>
	2395
	2396	int sh_util_regcmp (char * regex_str, char * in_str)
	2397	{
	2398	#if defined(REG_ESPACE)
	2399	int status = REG_ESPACE;
	2400	#else
	2401	int status = -1;
	2402	#endif
	2403	regex_t preg;
	2404	char * errbuf;
	2405
	2406	SL_ENTER(_("sh_util_regcmp"));
	2407
	2408	status = regcomp(&preg, regex_str, REG_NOSUB\|REG_EXTENDED);
	2409
	2410	if (status == 0)
	2411	{
	2412	if ((status = regexec(&preg, in_str, 0, NULL, 0)) == 0)
	2413	{
	2414	regfree (&preg);
	2415	SL_RETURN((0), _("sh_util_regcmp"));
	2416	}
	2417	}
	2418
	2419	if (status != 0 && status != REG_NOMATCH)
	2420	{
[34]	2421	errbuf = SH_ALLOC(BUFSIZ);
[1]	2422	(void) regerror(status, &preg, errbuf, BUFSIZ);
[34]	2423	errbuf[BUFSIZ-1] = '\0';
[1]	2424	sh_error_handle ((-1), FIL__, __LINE__, status, MSG_E_REGEX,
	2425	errbuf, regex_str);
	2426	SH_FREE(errbuf);
	2427	}
	2428
	2429	regfree (&preg);
	2430	SL_RETURN((-1), _("sh_util_regcmp"));
	2431	}
	2432
	2433	#endif
	2434
	2435
	2436
	2437
	2438
	2439
	2440
	2441

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source: trunk/src/sh_utils.c@ 577

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