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source: trunk/src/sh_tools.c@ 525

Last change on this file since 525 was 481, checked in by katerina, 9 years ago
Enhancements and fixes for tickets #374, #375, #376, #377, #378, and #379.
File size: 53.9 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 <stdio.h>
	24	#include <stdlib.h>
	25	#include <string.h>
	26	#include <ctype.h>
	27
	28	/* Must be early on FreeBSD
	29	*/
	30	#include <sys/types.h>
	31
	32	#ifdef HAVE_MEMORY_H
	33	#include <memory.h>
	34	#endif
	35
	36	#ifdef HAVE_SYS_SELECT_H
	37	#include <sys/select.h>
	38	#endif
	39
	40	#ifdef HAVE_UNISTD_H
	41	#include <errno.h>
	42	#include <signal.h>
	43	#include <setjmp.h>
	44	#include <pwd.h>
	45	#include <grp.h>
	46	#include <sys/stat.h>
	47	#include <sys/resource.h>
	48	#include <fcntl.h>
	49	#include <sys/wait.h>
	50	#include <unistd.h>
	51	#endif
	52
	53	#include <sys/socket.h>
	54
	55	#ifdef HOST_IS_HPUX
	56	#define _XOPEN_SOURCE_EXTENDED
	57	#endif
	58	#include <netinet/in.h>
	59	#include <arpa/inet.h>
	60	#include <netdb.h>
	61
	62	#ifndef FD_SET
	63	#define NFDBITS 32
	64	#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] \|= (1 << ((n) % NFDBITS)))
	65	#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS)))
	66	#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS)))
	67	#endif /* !FD_SET */
	68	#ifndef FD_SETSIZE
	69	#define FD_SETSIZE 32
	70	#endif
	71	#ifndef FD_ZERO
	72	#define FD_ZERO(p) memset((char )(p), '\0', sizeof((p)))
	73	#endif
	74
	75
	76	#if defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK)
	77	#include <sys/mman.h>
	78	#endif
	79
[11]	80	#define SH_REAL_SET
	81
[1]	82	#include "samhain.h"
	83	#include "sh_mem.h"
	84	#include "sh_error.h"
	85	#include "sh_tools.h"
	86	#include "sh_utils.h"
	87	#include "sh_tiger.h"
	88	#define SH_NEED_GETHOSTBYXXX
	89	#include "sh_static.h"
[137]	90	#include "sh_pthread.h"
[295]	91	#include "sh_ipvx.h"
[1]	92
	93	#undef FIL__
	94	#define FIL__ _("sh_tools.c")
	95
[472]	96	static int tools_debug = 0;
	97
[1]	98	#ifdef SH_ENCRYPT
	99	#include "rijndael-api-fst.h"
[132]	100	char * errorExplain (int err_num, char * buffer, size_t len)
[1]	101	{
[132]	102	char * p;
	103
[1]	104	if (err_num == BAD_KEY_DIR)
[132]	105	p = (_("Key direction is invalid"));
[1]	106	else if (err_num == BAD_KEY_MAT)
[132]	107	p = (_("Key material not of correct length"));
[1]	108	else if (err_num == BAD_KEY_INSTANCE)
[132]	109	p = (_("Key passed is not valid"));
[1]	110	else if (err_num == BAD_CIPHER_MODE)
[481]	111	p = (_("Params struct passed to rijndael_cipherInit invalid"));
[1]	112	else if (err_num == BAD_CIPHER_STATE)
[132]	113	p = (_("Cipher in wrong state"));
[1]	114	else if (err_num == BAD_BLOCK_LENGTH)
[132]	115	p = (_("Bad block length"));
[1]	116	else if (err_num == BAD_CIPHER_INSTANCE)
[132]	117	p = (_("Bad cipher instance"));
[1]	118	else if (err_num == BAD_DATA)
[132]	119	p = (_("Data contents are invalid"));
[1]	120	else
[132]	121	p = (_("Unknown error"));
	122	sl_strlcpy (buffer, p, len);
	123	return buffer;
[1]	124	}
	125
	126	#endif
	127
[197]	128	/* --- check for an interface ---
	129	*/
	130	int sh_tools_iface_is_present(char *str)
	131	{
[295]	132	#if defined(USE_IPVX)
	133	struct addrinfo *ai;
	134	struct addrinfo hints;
	135	int res;
	136
	137	memset (&hints, '\0', sizeof (hints));
	138	hints.ai_flags = AI_PASSIVE \| AI_ADDRCONFIG;
	139	hints.ai_socktype = SOCK_STREAM;
	140	res = getaddrinfo (str, _("2543"), &hints, &ai);
	141
	142	if (res == 0)
	143	{
	144	struct addrinfo *p = ai;
	145	while (p != NULL)
	146	{
	147	int fd = socket (p->ai_family, p->ai_socktype,
	148	p->ai_protocol);
	149
	150	if (fd < 0)
	151	{
	152	freeaddrinfo (ai);
	153	return 0;
	154	}
	155
	156	if (bind (fd, p->ai_addr, p->ai_addrlen) != 0)
	157	{
	158	/* bind() fails for access reasons, iface exists
	159	*/
	160	if (errno == EACCES \|\| errno == EADDRINUSE)
	161	{
	162	sl_close_fd (FIL__, __LINE__, fd);
	163	freeaddrinfo (ai);
	164	return 1;
	165	}
	166
	167	sl_close_fd (FIL__, __LINE__, fd);
	168	freeaddrinfo (ai);
	169	return 0;
	170	}
	171
	172	sl_close_fd (FIL__, __LINE__, fd);
	173	freeaddrinfo (ai);
	174	return 1;
	175	/* p = p->ai_next; */
	176	}
	177	}
	178	#else
[197]	179	struct sockaddr_in sin;
	180	int sd;
	181
	182	memset(&sin, '\0', sizeof(sin));
	183	sin.sin_family = AF_INET;
	184	if (inet_aton(str, &(sin.sin_addr)))
	185	{
	186	sin.sin_port = htons(2543);
	187
	188	if (-1 == (sd = socket(AF_INET, SOCK_STREAM, 0)))
	189	{
	190	return 0;
	191	}
	192
	193	if (-1 == bind(sd, (struct sockaddr *)&sin, sizeof(sin)))
	194	{
	195	int retval = 0;
	196
	197	/* bind() fails for access reasons, iface exists
	198	*/
	199	if (errno == EACCES \|\| errno == EADDRINUSE)
	200	retval = 1;
[252]	201	sl_close_fd (FIL__, __LINE__, sd);
[197]	202	return retval;
	203	}
	204
	205	/* bind() succeeds, iface exists
	206	*/
[252]	207	sl_close_fd(FIL__, __LINE__, sd);
[197]	208	return 1;
	209	}
[295]	210	#endif
[197]	211	return 0;
	212	}
	213
[407]	214	/* --- recode all \blah escapes to qp (quoted printable) '=XX' format, and
	215	* also code all remaining unprintable chars ---
[1]	216	*/
[12]	217	#define SH_PUT_4(p, a, b, c) (p)[0] = (a); (p)[1] = (b); (p)[2] = (c);
	218
[1]	219	char * sh_tools_safe_name (const char * instr, int flag)
	220	{
[18]	221	unsigned char c, d;
[1]	222	const char * p;
	223	char tmp[4];
	224	char * outstr;
[34]	225	size_t len = 1;
[1]	226	int i = 0;
	227	unsigned char val_octal = '\0';
[18]	228	static char ctable[16] = { '0', '1', '2', '3', '4', '5', '6', '7',
	229	'8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
[1]	230
	231	SL_ENTER(_("sh_tools_safe_name"));
	232
	233	if (instr)
[34]	234	{
	235	len = strlen(instr);
	236	if (sl_ok_muls (3, len) && sl_ok_adds ((3*len), 4))
	237	{
	238	len = (3 * len) + 4;
	239	p = instr;
	240	}
	241	else
	242	{
	243	len = 1;
	244	p = NULL;
	245	}
	246	}
	247	else
	248	{
	249	p = NULL;
	250	}
[1]	251
	252	outstr = SH_ALLOC(len);
	253
	254	outstr[0] = '\0';
	255	tmp[3] = '\0';
	256
[11]	257	#if !defined(SH_USE_XML)
	258	(void) flag; /* fix compiler warning */
	259	#endif
	260
	261	if (!p)
	262	goto end;
	263
	264	while (*p)
[1]	265	{
	266	c = *p;
	267
	268	if (*p == '\n')
	269	{
	270	outstr[i] = ' '; ++i; ++p;
	271	continue;
	272	}
	273
	274	#ifdef SH_USE_XML
[11]	275	if (flag == 1)
	276	{
	277	if ((*p) == '"')
	278	{
[12]	279	SH_PUT_4(&outstr[i], '=', '2', '2');
	280	i+=3; ++p;
[11]	281	continue;
	282	}
	283	else if ((*p) == '&')
	284	{
[12]	285	SH_PUT_4(&outstr[i], '=', '2', '6');
	286	i+=3; ++p;
[11]	287	continue;
	288	}
	289	else if ((*p) == '<')
	290	{ /* left angle */
[12]	291	SH_PUT_4(&outstr[i], '=', '3', 'c');
	292	i+=3; ++p;
[11]	293	continue;
	294	}
	295	else if ((*p) == '>')
	296	{ /* right angle */
[12]	297	SH_PUT_4(&outstr[i], '=', '3', 'e');
	298	i+=3; ++p;
[11]	299	continue;
	300	}
[1]	301	}
	302	#endif
	303
[12]	304	if ( (p) != '\\' && (p) != '&' && (p) != '=' && (p) != '\'')
[1]	305	{
[11]	306	outstr[i] = *p; ++i;
	307	++p;
	308
[81]	309	if (c < 32 \|\| c > 126)
[1]	310	{
[11]	311	--i;
[18]	312	d = c % 16; c = c / 16;
	313	outstr[i] = '='; ++i;
	314	outstr[i] = ctable[c]; ++i;
	315	outstr[i] = ctable[d]; ++i;
[1]	316	}
[11]	317
[1]	318	continue;
	319	}
	320	else if ((*p) == '\'')
	321	{
[12]	322	SH_PUT_4(&outstr[i], '=', '2', '7');
	323	i+=3; ++p;
[1]	324	}
	325	else if (*p == '=')
	326	{
	327	if (p[1] != '"' && p[1] != '<')
	328	{
[12]	329	SH_PUT_4(&outstr[i], '=', '3', 'd');
	330	i+=3; ++p;
[1]	331	}
	332	else
	333	{ outstr[i] = *p; ++i; ++p; }
	334	}
	335	else if (*p == '\\')
	336	{
	337	++p;
	338	if (!p)
	339	break;
	340	if (!(*p))
	341	break;
	342
	343
[383]	344
[1]	345	switch (*p) {
	346	case '\\':
[12]	347	SH_PUT_4(&outstr[i], '=', '5', 'c');
	348	i+=3; ++p;
[1]	349	break;
	350	case 'n':
[12]	351	SH_PUT_4(&outstr[i], '=', '0', 'a');
[1]	352	i+=3; ++p;
	353	break;
	354	case 'b':
[12]	355	SH_PUT_4(&outstr[i], '=', '0', '8');
[1]	356	i+=3; ++p;
	357	break;
	358	case 'r':
[12]	359	SH_PUT_4(&outstr[i], '=', '0', 'd');
[1]	360	i+=3; ++p;
	361	break;
	362	case 't':
[12]	363	SH_PUT_4(&outstr[i], '=', '0', '9');
[1]	364	i+=3; ++p;
	365	break;
	366	case 'v':
[12]	367	SH_PUT_4(&outstr[i], '=', '0', 'b');
[1]	368	i+=3; ++p;
	369	break;
	370	case 'f':
[12]	371	SH_PUT_4(&outstr[i], '=', '0', 'c');
[1]	372	i+=3; ++p;
	373	break;
	374	case '\'':
[12]	375	SH_PUT_4(&outstr[i], '=', '2', '7');
[1]	376	i+=3; ++p;
	377	break;
[12]	378	case '"': /* also encode quoted '"' */
	379	SH_PUT_4(&outstr[i], '=', '2', '2');
[1]	380	i+=3; ++p;
	381	break;
	382	case ' ':
[12]	383	SH_PUT_4(&outstr[i], '=', '2', '0');
[1]	384	i+=3; ++p;
	385	break;
	386	default:
[18]	387	if (strlen(p) < 3) /* certainly not an octal number, skip */
[1]	388	{
	389	p += strlen(p);
	390	}
	391	else
	392	{
	393	tmp[0] = p[0]; tmp[1] = p[1]; tmp[2] = p[2];
	394	val_octal = (unsigned char) strtoul(tmp, (char **)NULL, 8);
	395	if (val_octal != '\0') {
	396	c = val_octal;
[18]	397	d = c % 16; c = c / 16;
	398	outstr[i] = '='; ++i;
	399	outstr[i] = ctable[c]; ++i;
	400	outstr[i] = ctable[d]; ++i;
[1]	401	}
	402	p += 3;
	403	}
	404	}
	405	}
[11]	406	else if (*p == '&')
[1]	407	{
	408	++p;
[18]	409	if (!p \|\| !(*p))
	410	{
	411	outstr[i] = '&'; ++i;
	412	break;
	413	}
[1]	414
	415	if (p[0] == 'a' && p[1] == 'm' && p[2] == 'p' && p[3] == ';')
	416	{
[12]	417	SH_PUT_4(&outstr[i], '=', '2', '6');
[1]	418	i+=3; p += 4;
	419	}
	420	else if (p[0] == 'q' && p[1] == 'u' && p[2] == 'o' && p[3] == 't' &&
	421	p[4] == ';')
	422	{
[12]	423	SH_PUT_4(&outstr[i], '=', '2', '2');
[1]	424	i+=3; p += 5;
	425	}
	426	else if (p[0] == 'l' && p[1] == 't' && p[2] == ';')
	427	{
[12]	428	SH_PUT_4(&outstr[i], '=', '3', 'c');
[1]	429	i+=3; p += 3;
	430	}
	431	else if (p[0] == 'g' && p[1] == 't' && p[2] == ';')
	432	{
[12]	433	SH_PUT_4(&outstr[i], '=', '3', 'e');
[1]	434	i+=3; p += 3;
	435	}
	436	else /* conserve the '&' */
	437	{
	438	outstr[i] = '&'; ++i;
	439	}
[11]	440	}
	441	else
	442	{
	443	outstr[i] = *p; ++i;
	444	++p;
	445	}
[1]	446	} /* while (p && p) /
[11]	447
	448	end:
[1]	449
	450	outstr[i] = '\0';
	451	SL_RETURN( outstr, _("sh_tools_safe_name"));
	452	}
	453
	454
	455	/* extern int h_errno; */
	456
[132]	457	char * sh_tools_errmessage (int tellme, char * errbuf, size_t len)
[1]	458	{
[132]	459	char * p = NULL;
[1]	460	#ifdef HOST_NOT_FOUND
	461	if (tellme == HOST_NOT_FOUND)
[132]	462	p = _("The specified host is unknown: ");
[1]	463	#endif
	464	#ifdef NO_ADDRESS
	465	if (tellme == NO_ADDRESS)
[132]	466	p = _("The requested name is valid but does not have an IP address: ");
[1]	467	#endif
	468	#ifdef NO_RECOVERY
	469	if (tellme == NO_RECOVERY)
[132]	470	p = _("A non-recoverable name server error occurred: ");
[1]	471	#endif
	472	#ifdef TRY_AGAIN
	473	if (tellme == TRY_AGAIN)
[132]	474	p = _("A temporary error occurred on an authoritative name server. The specified host is unknown: ");
[1]	475	#endif
[132]	476	if (!p) p = _("Unknown error");
	477	sl_strlcpy(errbuf, p, len);
	478	return errbuf;
[1]	479	}
	480
	481	#if defined (SH_WITH_SERVER)
	482
	483	int get_open_max ()
	484	{
	485	int value;
	486
	487	#ifdef _SC_OPEN_MAX
	488	value = sysconf (_SC_OPEN_MAX);
	489	#else
	490	#ifdef OPEN_MAX
	491	value = OPEN_MAX;
	492	#else
	493	value = _POSIX_OPEN_MAX;
	494	#endif
	495	#endif
	496
	497	if (value < 0)
	498	value = 8; /* POSIX lower limit */
	499
	500	if (value > 4096)
	501	value = 4096;
	502
	503	return value;
	504	}
	505
	506	#endif
	507
	508	typedef struct _sin_cache {
	509	char * address;
[295]	510	struct sh_sockaddr saddr;
[1]	511	struct _sin_cache * next;
	512	} sin_cache;
	513
	514	static sin_cache * conn_cache = NULL;
	515	static int cached_addr = 0;
	516
	517	void delete_cache()
	518	{
	519	sin_cache * check_cache = conn_cache;
[383]	520	sin_cache * old_entry;
[1]	521
	522	SL_ENTER(_("delete_cache"));
	523
	524	while (check_cache != NULL)
	525	{
	526	old_entry = check_cache;
	527	check_cache = check_cache->next;
	528	SH_FREE(old_entry->address);
	529	SH_FREE(old_entry);
	530	}
	531
	532	cached_addr = 0;
	533
	534	conn_cache = NULL;
	535	SL_RET0(_("delete_cache"));
	536	}
	537
	538	int DoReverseLookup = S_TRUE;
	539
[22]	540	int set_reverse_lookup (const char * c)
[1]	541	{
	542	return sh_util_flagval(c, &DoReverseLookup);
	543	}
	544
[295]	545	#if !defined(USE_IPVX)
[1]	546	int connect_port (char * address, int port,
	547	char * ecall, int * errnum, char * errmsg, int errsiz)
	548	{
	549	struct in_addr haddr; /* host address from numeric */
	550	/* host details returned by the DNS */
	551	struct hostent *host_entry = NULL;
	552	struct sockaddr_in sinr; /* socket to the remote host */
	553
	554	char * host_name;
	555
[170]	556	volatile int fd = (-1);
[1]	557	int status;
[170]	558	volatile int fail = 0;
[1]	559	int cached = 0;
	560
	561	int retval;
[132]	562	char errbuf[SH_ERRBUF_SIZE];
[1]	563
	564	sin_cache * check_cache = conn_cache;
	565
	566	SL_ENTER(_("connect_port"));
	567
[472]	568	if (tools_debug)
	569	fprintf(stderr, _("-00- <%s> <%d> no IPv6 support\n"), address, port);
	570
[352]	571	if (errsiz > 0) errmsg[0] = '\0';
	572
[1]	573	/* paranoia -- should not happen
	574	*/
	575	if (cached_addr > 128)
	576	delete_cache();
	577
	578	if (check_cache != NULL)
	579	{
	580	while (check_cache && check_cache->address)
	581	{
[472]	582	if (tools_debug)
	583	fprintf(stderr, _("-01- <%s> <%s>\n"),
	584	address, check_cache->address);
	585
[1]	586	if ( 0 == sl_strncmp(check_cache->address,
[313]	587	address, sl_strlen(address)) )
[1]	588	{
[295]	589	memcpy (&sinr, &((check_cache->saddr).sin), sizeof(struct sockaddr_in));
[1]	590	sinr.sin_family = AF_INET;
	591	sinr.sin_port = htons (port);
	592	cached = 1;
	593	break;
	594	}
[472]	595	if (tools_debug)
	596	{
	597	char eaddr[SH_IP_BUF];
	598	sl_strlcpy(eaddr,
	599	inet_ntoa((struct in_addr ) &(sinr.sin_addr)),
	600	sizeof(eaddr));
	601	fprintf(stderr, _("-02- <AF_INET> <%s> <%d> <%d>\n"),
	602	eaddr,
	603	port, cached);
	604	}
[1]	605	if (check_cache->next)
	606	check_cache = check_cache->next;
	607	else
	608	check_cache = NULL;
	609	}
	610	}
	611
	612	/* only use gethostbyname() if neccessary
	613	*/
	614	if (cached == 0)
	615	{
[472]	616	if (tools_debug)
	617	fputs(_("-03- not cached\n"), stderr);
[1]	618	#ifdef HAVE_INET_ATON
	619	if (0 == inet_aton(address, &haddr))
	620	#else
	621	if ((unsigned long)-1 == (haddr.s_addr = inet_addr(address)))
	622	#endif
	623	{
[170]	624	SH_MUTEX_LOCK(mutex_resolv);
	625
[143]	626	host_name = NULL;
	627
[1]	628	host_entry = sh_gethostbyname(address);
	629
	630	if (host_entry == NULL \|\| host_entry->h_addr == NULL)
	631	{
	632	sl_strlcpy(ecall, _("gethostbyname"), SH_MINIBUF);
	633	#ifndef NO_H_ERRNO
	634	*errnum = h_errno;
	635	#else
	636	*errnum = 666;
	637	#endif
[132]	638	(void) sh_tools_errmessage (*errnum, errmsg, errsiz);
[1]	639	sl_strlcat(errmsg, address, errsiz);
	640	fail = (-1);
	641	}
	642	else
	643	{
	644	sinr.sin_family = AF_INET;
	645	sinr.sin_port = htons (port);
	646	sinr.sin_addr = (struct in_addr ) host_entry->h_addr;
	647
[472]	648	if (tools_debug)
	649	fprintf(stderr,
	650	_("-04- <%s> <%s> hostent->h_name %s <%s> hostent->h_addr\n"),
	651	address,
	652	(host_entry->h_name == NULL) ? _("NULL") : host_entry->h_name,
	653	(host_entry->h_addrtype == AF_INET) ? _("AF_INET") : _("AF_INET6"),
	654	inet_ntoa((struct in_addr ) &(sinr.sin_addr)));
[1]	655
	656	/* reverse DNS lookup
	657	*/
	658	if (DoReverseLookup == S_TRUE)
	659	{
	660	if (host_entry->h_name == NULL)
	661	{
	662	host_name = SH_ALLOC(1);
	663	host_name[0] = '\0';
	664	}
	665	else
	666	{
[34]	667	host_name = sh_util_strdup(host_entry->h_name);
[1]	668	}
	669
	670	host_entry = sh_gethostbyaddr ((char *) &sinr.sin_addr,
	671	sizeof(struct in_addr),
	672	AF_INET);
	673	if (host_entry == NULL \|\| host_entry->h_name == NULL)
	674	{
	675	sl_strlcpy(ecall, _("gethostbyaddr"), SH_MINIBUF);
	676	#ifndef NO_H_ERRNO
	677	*errnum = h_errno;
	678	#else
	679	*errnum = 666;
	680	#endif
[132]	681	(void) sh_tools_errmessage (*errnum, errmsg, errsiz);
[1]	682	sl_strlcat(errmsg,
	683	inet_ntoa ((struct in_addr ) &(sinr.sin_addr)),
	684	errsiz);
	685	fail = (-1);
	686	}
	687	else
	688	{
	689	*errnum = 0;
	690	if (sl_strlen(host_entry->h_name) == 0 \|\|
[169]	691	(*errnum = sl_strcasecmp(host_name,host_entry->h_name)) != 0)
[1]	692	{
	693	if (*errnum)
	694	sl_strlcpy(ecall, _("strcmp"), SH_MINIBUF);
	695	else
	696	sl_strlcpy(ecall, _("strlen"), SH_MINIBUF);
[161]	697	sl_strlcpy(errmsg, _("Reverse lookup failed: "),
[1]	698	errsiz);
	699	sl_strlcat(errmsg, address, errsiz);
	700	sl_strlcat(errmsg, _(" vs "), errsiz);
	701	sl_strlcat(errmsg,
	702	inet_ntoa ((struct in_addr ) &(sinr.sin_addr)),
	703	errsiz);
	704	fail = -1;
	705	}
	706	}
	707	}
	708	}
[134]	709	SH_MUTEX_UNLOCK(mutex_resolv);
[143]	710	if (host_name) SH_FREE(host_name);
[1]	711	}
	712
	713	else /* address was numeric */
	714	{
	715	sinr.sin_family = AF_INET;
	716	sinr.sin_port = htons (port);
	717	sinr.sin_addr = haddr;
[472]	718
	719	if (tools_debug)
	720	fprintf(stderr,
	721	_("-04- <%s> is_numeric AF_INET <%s> \n"),
	722	address,
	723	inet_ntoa((struct in_addr ) &(sinr.sin_addr)));
[1]	724	}
	725
	726
	727	if (fail != -1)
	728	{
	729	/* put it into the cache
	730	*/
	731	check_cache = SH_ALLOC(sizeof(sin_cache));
	732	check_cache->address = SH_ALLOC(sl_strlen(address) + 1);
	733	sl_strlcpy (check_cache->address, address, sl_strlen(address) + 1);
[295]	734
	735	sh_ipvx_save(&(check_cache->saddr), AF_INET, (struct sockaddr *) &sinr);
	736
[1]	737	++cached_addr;
	738
	739	if (conn_cache)
	740	{
	741	if (conn_cache->next)
	742	check_cache->next = conn_cache->next;
	743	else
	744	check_cache->next = NULL;
	745	conn_cache->next = check_cache;
	746	}
	747	else
	748	{
	749	check_cache->next = NULL;
	750	conn_cache = check_cache;
	751	}
	752	}
	753	}
	754
	755
	756	if (fail != (-1))
	757	{
	758	fd = socket(AF_INET, SOCK_STREAM, 0);
	759	if (fd < 0) {
	760	fail = (-1);
	761	status = errno;
	762	sl_strlcpy(ecall, _("socket"), SH_MINIBUF);
	763	*errnum = status;
[132]	764	sl_strlcpy(errmsg, sh_error_message (status, errbuf, sizeof(errbuf)), errsiz);
[1]	765	sl_strlcat(errmsg, _(", address "), errsiz);
	766	sl_strlcat(errmsg, address, errsiz);
	767	}
	768	}
	769
	770	if (fail != (-1)) {
	771
	772	if ( retry_connect(FIL__, __LINE__, fd,
	773	(struct sockaddr *) &sinr, sizeof(sinr)) < 0)
	774	{
	775	status = errno;
	776	sl_strlcpy(ecall, _("connect"), SH_MINIBUF);
	777	*errnum = status;
[132]	778	sl_strlcpy(errmsg, sh_error_message (status, errbuf, sizeof(errbuf)), errsiz);
[472]	779	sl_strlcat(errmsg,
	780	(sinr.sin_family == AF_INET) ? _(", AF_INET ") : _(", AF_INET6 "),
	781	errsiz);
[1]	782	sl_strlcat(errmsg, _(", address "), errsiz);
	783	sl_strlcat(errmsg, address, errsiz);
[252]	784	sl_close_fd(FIL__, __LINE__, fd);
[1]	785	fail = (-1);
	786	}
	787	}
	788
	789	retval = (fail < 0) ? (-1) : fd;
	790	SL_RETURN(retval, _("connect_port"));
	791	}
[295]	792	#else
	793	int connect_port (char * address, int port,
	794	char * ecall, int * errnum, char * errmsg, int errsiz)
	795	{
	796	struct sockaddr_in *sin;
	797	struct sockaddr_in6 *sin6;
	798	struct sh_sockaddr ss;
	799	sin_cache * check_cache = conn_cache;
	800	int cached = 0;
	801	int fail = 0;
	802	int fd = -1;
	803	int status = 0;
[1]	804
[295]	805	int retval;
	806	char errbuf[SH_ERRBUF_SIZE];
	807
	808	SL_ENTER(_("connect_port"));
	809
	810	/* paranoia -- should not happen
	811	*/
	812	if (cached_addr > 128)
	813	delete_cache();
	814
[472]	815	if (tools_debug)
	816	fprintf(stderr, _("-00- <%s> <%d>\n"), address, port);
	817
[295]	818	if (check_cache != NULL)
	819	{
	820	while (check_cache && check_cache->address)
	821	{
[472]	822	if (tools_debug)
	823	fprintf(stderr, _("-01- <%s> <%s>\n"),
	824	address, check_cache->address);
	825
[313]	826	if ( 0 == sl_strcmp(check_cache->address, address) )
[295]	827	{
	828	memcpy (&ss, &(check_cache->saddr), sizeof(struct sh_sockaddr));
	829	switch (ss.ss_family)
	830	{
	831	case AF_INET:
	832	sin = &(ss.sin);
	833	sin->sin_port = htons (port);
[313]	834	cached = 1;
	835	break;
[295]	836	case AF_INET6:
	837	sin6 = &(ss.sin6);
	838	sin6->sin6_port = htons (port);
[313]	839	cached = 1;
	840	break;
	841	default:
	842	break;
[295]	843	}
[472]	844	if (tools_debug)
	845	{
	846	char eaddr[SH_IP_BUF];
	847	sh_ipvx_ntoa(eaddr, sizeof(eaddr), &ss);
	848	fprintf(stderr, _("-02- <%s> <%s> <%d> <%d>\n"),
	849	(ss.ss_family == AF_INET) ? _("AF_INET") : _("AF_INET6"),
	850	eaddr,
	851	port, cached);
	852	}
[295]	853	break;
	854	}
	855	if (check_cache->next)
	856	check_cache = check_cache->next;
	857	else
	858	check_cache = NULL;
	859	}
	860	}
	861
	862	if (cached != 0)
	863	{
[472]	864	if (tools_debug)
	865	fputs(_("-03- cached\n"), stderr);
[295]	866	fd = socket(ss.ss_family, SOCK_STREAM, 0);
	867	if (fd < 0)
	868	{
	869	status = errno;
	870	fail = (-1);
	871	sl_strlcpy(ecall, _("socket"), SH_MINIBUF);
	872	*errnum = status;
	873	sl_strlcpy(errmsg, sh_error_message (status, errbuf, sizeof(errbuf)), errsiz);
	874	sl_strlcat(errmsg, _(", address "), errsiz);
	875	sl_strlcat(errmsg, address, errsiz);
	876	}
[313]	877
	878
[295]	879	if (fail != (-1))
	880	{
	881	int addrlen = SH_SS_LEN(ss);
	882
	883	if ( retry_connect(FIL__, __LINE__, fd,
	884	sh_ipvx_sockaddr_cast(&ss), addrlen) < 0)
	885	{
	886	status = errno;
	887	sl_strlcpy(ecall, _("connect"), SH_MINIBUF);
	888	*errnum = status;
	889	sl_strlcpy(errmsg, sh_error_message (status, errbuf, sizeof(errbuf)), errsiz);
	890	sl_strlcat(errmsg, _(", address "), errsiz);
	891	sl_strlcat(errmsg, address, errsiz);
	892	sl_close_fd(FIL__, __LINE__, fd);
	893	fail = (-1);
	894	}
	895	}
	896
	897	if (fail != 0)
	898	{
	899	delete_cache();
	900	cached = 0;
	901	}
	902	}
	903
	904	if (cached == 0)
	905	{
	906	int res;
	907	char sport[32];
	908	struct addrinfo *ai;
	909	struct addrinfo hints;
	910
[472]	911	if (tools_debug)
	912	fputs(_("-03- not cached\n"), stderr);
	913
[295]	914	memset (&hints, '\0', sizeof (hints));
	915	hints.ai_flags = AI_ADDRCONFIG;
	916	#if defined(AI_CANONNAME)
	917	hints.ai_flags \|= AI_CANONNAME;
	918	#endif
[313]	919	hints.ai_family = AF_UNSPEC;
[295]	920	hints.ai_socktype = SOCK_STREAM;
	921	sl_snprintf(sport, sizeof(sport), "%d", port);
	922
	923	res = getaddrinfo (address, sport, &hints, &ai);
	924	if (res != 0)
	925	{
	926	fail = (-1);
	927	status = errno;
	928	sl_strlcpy(ecall, _("getaddrinfo"), SH_MINIBUF);
	929	*errnum = status;
	930	sl_strlcpy(errmsg, gai_strerror (res), errsiz);
	931	sl_strlcat(errmsg, _(", address "), errsiz);
	932	sl_strlcat(errmsg, address, errsiz);
	933	}
	934
	935	if (fail != (-1) && (DoReverseLookup == S_TRUE) && !sh_ipvx_is_numeric(address))
	936	{
	937	struct addrinfo *p = ai;
	938	int success = 0;
	939	char hostname[SH_BUFSIZE];
	940	const char * canonical;
	941
[472]	942
[295]	943	#if defined(AI_CANONNAME)
	944	if (ai->ai_canonname && strlen(ai->ai_canonname) > 0)
	945	{
	946	canonical = ai->ai_canonname;
[472]	947	if (tools_debug)
	948	fprintf(stderr, _("-04- <%s> <%s> ai->ai_canonname\n"),
	949	address, canonical);
[295]	950	}
	951	else
	952	{
	953	canonical = address;
[472]	954	if (tools_debug)
	955	fprintf(stderr, _("-04- <%s> <%s> defined ai_canonname\n"),
	956	address, canonical);
[295]	957	}
	958	#else
	959	canonical = address;
[472]	960	if (tools_debug)
	961	fprintf(stderr, _("-04- <%s> <%s> not defined ai_canonname\n"),
	962	address, canonical);
[295]	963	#endif
	964
	965	while (p != NULL)
	966	{
	967	int e = getnameinfo (p->ai_addr, p->ai_addrlen,
	968	hostname, sizeof(hostname),
	969	NULL, 0, NI_NAMEREQD);
	970
	971	if (e == 0)
	972	{
[472]	973	if (tools_debug)
	974	{
	975	fprintf(stderr, _("-05- <%s> <%s> <%s>\n"),
	976	(p->ai_family == AF_INET) ? _("AF_INET") : _("AF_INET6"),
	977	sh_ipvx_print_sockaddr (p->ai_addr, p->ai_family),
	978	hostname);
	979	}
	980
[295]	981	if (sl_strcasecmp(hostname, canonical) == 0)
	982	{
[472]	983	if (tools_debug)
	984	fprintf(stderr, _("-06- <%s> <%s> match\n"),
	985	hostname, canonical);
[295]	986	success = 1;
	987	break;
	988	}
[472]	989
[295]	990	}
	991
	992	p = p->ai_next;
	993	}
	994
	995	if (success == 0)
	996	{
	997	sl_strlcpy(ecall, _("strcmp"), SH_MINIBUF);
	998	sl_strlcpy(errmsg, _("Reverse lookup failed: "),
	999	errsiz);
	1000	sl_strlcat(errmsg, address, errsiz);
	1001	fail = -1;
	1002	freeaddrinfo (ai);
	1003	}
	1004	}
	1005
	1006	if (fail != (-1))
	1007	{
	1008	struct addrinfo *p = ai;
	1009
	1010	while (p != NULL)
	1011	{
[313]	1012	if ( (SOCK_STREAM == p->ai_socktype) &&
	1013	((p->ai_family == AF_INET) \|\| (p->ai_family == AF_INET6)) )
[295]	1014	{
[313]	1015
	1016	fd = socket(p->ai_family, SOCK_STREAM, 0);
	1017
	1018	if (fd != (-1))
[295]	1019	{
[313]	1020	if (retry_connect(FIL__, __LINE__, fd,
	1021	p->ai_addr, p->ai_addrlen) >= 0)
[295]	1022	{
[313]	1023	/* put it into the cache
	1024	*/
	1025	check_cache = SH_ALLOC(sizeof(sin_cache));
	1026	check_cache->address = SH_ALLOC(sl_strlen(address) + 1);
	1027	sl_strlcpy (check_cache->address, address, sl_strlen(address) + 1);
	1028
	1029	sh_ipvx_save(&(check_cache->saddr), p->ai_family, p->ai_addr);
	1030
	1031	++cached_addr;
	1032
	1033	if (conn_cache)
	1034	{
	1035	if (conn_cache->next)
	1036	check_cache->next = conn_cache->next;
	1037	else
	1038	check_cache->next = NULL;
	1039	conn_cache->next = check_cache;
	1040	}
[295]	1041	else
[313]	1042	{
	1043	check_cache->next = NULL;
	1044	conn_cache = check_cache;
	1045	}
	1046
	1047	freeaddrinfo (ai);
	1048	goto end;
[295]	1049	}
[313]	1050	status = errno;
	1051	sl_close_fd(FIL__, __LINE__, fd);
[295]	1052	}
[313]	1053	else
	1054	{
	1055	status = errno;
	1056	}
[295]	1057	}
	1058	p = p->ai_next;
	1059	}
	1060	fail = (-1);
	1061	freeaddrinfo (ai);
	1062
	1063	sl_strlcpy(ecall, _("connect"), SH_MINIBUF);
	1064	*errnum = status;
	1065	sl_strlcpy(errmsg, sh_error_message (status, errbuf, sizeof(errbuf)), errsiz);
	1066	sl_strlcat(errmsg, _(", address "), errsiz);
	1067	sl_strlcat(errmsg, address, errsiz);
	1068	}
	1069	}
	1070
	1071	end:
	1072	retval = (fail < 0) ? (-1) : fd;
	1073	SL_RETURN(retval, _("connect_port"));
	1074
	1075	}
	1076	#endif
	1077
[1]	1078	int connect_port_2 (char * address1, char * address2, int port,
	1079	char * ecall, int * errnum, char * errmsg, int errsiz)
	1080	{
	1081	int retval = (-1);
	1082
	1083	SL_ENTER(_("connect_port_2"));
	1084
	1085	errmsg[0] = '\0';
	1086	*errnum = 0;
	1087
	1088	if (address1 != NULL && address1[0] != '\0')
	1089	retval = connect_port (address1, port,
	1090	ecall, errnum,
	1091	errmsg, errsiz);
	1092
	1093	if (retval < 0 && address2 != NULL && address2[0] != '\0')
	1094	{
	1095	/* can't use sh_error_handle here, as this would cause an infinite
	1096	* loop if called from sh_unix_time
	1097	*/
	1098	TPT(( 0, FIL__, __LINE__, _("msg=<Using alternative server %s.>\n"),
	1099	address2));
	1100	retval = connect_port (address2, port,
	1101	ecall, errnum,
	1102	errmsg, errsiz);
	1103	}
	1104
	1105	if ((retval < 0) &&
	1106	(address1 == NULL \|\| address1[0] == '\0') &&
	1107	(address1 == NULL \|\| address1[0] == '\0'))
	1108	{
	1109	sl_strlcpy(ecall, _("connect_port_2"), SH_MINIBUF);
	1110	sl_strlcpy(errmsg, _("No server address known"), errsiz);
	1111	}
	1112	SL_RETURN(retval, _("connect_port_2"));
	1113	/* return retval; */
	1114	}
	1115
[27]	1116	#if defined(HAVE_NTIME) \|\| defined(SH_WITH_CLIENT) \|\| defined(SH_WITH_SERVER)
[1]	1117	static
	1118	int sh_write_select(int type, int sockfd,
	1119	char *buf, int nbytes,
	1120	int * w_error, int timeout)
	1121	{
	1122	int countbytes, count;
	1123	fd_set fds;
	1124	struct timeval tv;
	1125	int select_now;
	1126	int num_sel;
	1127
[132]	1128	char errbuf[SH_ERRBUF_SIZE];
[1]	1129
	1130	SL_ENTER(_("sh_write_select"));
	1131
	1132	FD_ZERO(&fds);
	1133	FD_SET(sockfd, &fds);
	1134
	1135	countbytes = 0;
	1136	tv.tv_sec = 1;
	1137	tv.tv_usec = 0;
	1138	select_now = 0;
	1139
	1140	*w_error = 0;
	1141
	1142	while ( countbytes < nbytes ) {
	1143
	1144	FD_ZERO(&fds);
	1145	FD_SET(sockfd, &fds);
	1146
	1147	if (type == SH_DO_WRITE)
	1148	{
	1149	if ( (num_sel = select (sockfd+1, NULL, &fds, NULL, &tv)) == -1)
	1150	{
	1151	if (sig_raised == 1)
	1152	{
	1153	sig_raised = 2;
	1154	continue;
	1155	}
[171]	1156	if ( errno == EINTR \|\| errno == EINPROGRESS ) /* try again */
[1]	1157	continue;
	1158	*w_error = errno;
[379]	1159
[171]	1160	sh_error_message(*w_error, errbuf, sizeof(errbuf));
	1161	sh_error_handle (SH_ERR_INFO, FIL__, __LINE__, errno, MSG_E_SUBGEN,
	1162	errbuf,
	1163	_("sh_write_select (ws)") );
	1164	TPT(( 0, FIL__, __LINE__, _("msg=<select: %s>\n"), errbuf ));
[1]	1165	SL_RETURN( countbytes, _("sh_write_select"));
	1166	}
	1167	}
	1168	else
	1169	{
	1170	if ( (num_sel = select (sockfd+1, &fds, NULL, NULL, &tv)) == -1)
	1171	{
	1172	if (sig_raised == 1)
	1173	{
	1174	sig_raised = 2;
	1175	continue;
	1176	}
[171]	1177	if ( errno == EINTR \|\| errno == EINPROGRESS ) /* try again */
[1]	1178	continue;
	1179	*w_error = errno;
[379]	1180
[171]	1181	sh_error_message(*w_error, errbuf, sizeof(errbuf));
	1182	sh_error_handle (SH_ERR_INFO, FIL__, __LINE__, errno, MSG_E_SUBGEN,
	1183	errbuf,
	1184	_("sh_write_select (rs)") );
	1185	TPT(( 0, FIL__, __LINE__, _("msg=<select: %s>\n"), errbuf ));
[1]	1186	SL_RETURN( countbytes, _("sh_write_select"));
	1187	}
	1188	}
	1189
	1190	/* on Linux, timeout is modified to reflect the amount of
	1191	* time not slept
	1192	*/
	1193	tv.tv_sec = 1;
	1194	tv.tv_usec = 0;
	1195
	1196
	1197	/* let's not hang on forever
	1198	*/
	1199	if (num_sel == 0)
	1200	{
	1201	++select_now; /* timeout */
	1202	if ( select_now > timeout ) /* 5 minutes */
	1203	{
	1204	#ifdef ETIMEDOUT
	1205	*w_error = ETIMEDOUT;
	1206	#else
	1207	*w_error = 0;
	1208	#endif
[379]	1209
[1]	1210	TPT(( 0, FIL__, __LINE__, _("msg=<Timeout>\n")));
	1211	SL_RETURN( countbytes, _("sh_write_select"));
	1212	}
	1213	}
	1214
	1215	if ( FD_ISSET (sockfd, &fds) )
	1216	{
	1217	if (type == SH_DO_WRITE)
	1218	count = write (sockfd, buf, nbytes-countbytes);
	1219	else
	1220	count = read (sockfd, buf, nbytes-countbytes);
	1221
	1222	if (count > 0)
	1223	{
	1224	countbytes += count;
	1225	buf += count; /* move buffer pointer forward */
	1226	if (countbytes < nbytes) FD_SET( sockfd, &fds );
	1227	}
	1228	else if (count < 0 && errno == EINTR)
	1229	{
	1230	FD_SET( sockfd, &fds );
	1231	}
	1232	else if (count < 0)
	1233	{
	1234	*w_error = errno;
[379]	1235
[171]	1236	sh_error_message(*w_error, errbuf, sizeof(errbuf));
	1237	sh_error_handle (SH_ERR_INFO, FIL__, __LINE__, errno, MSG_E_SUBGEN,
	1238	errbuf,
	1239	(type == SH_DO_WRITE) ?
	1240	_("sh_write_select (w)") : _("sh_write_select (r)"));
[1]	1241	TPT(( 0, FIL__, __LINE__, _("msg=<count < 0>\n")));
	1242	SL_RETURN( countbytes, _("sh_write_select"));
	1243	}
	1244	else /* count == 0 */
	1245	{
	1246	*w_error = errno;
[379]	1247
[1]	1248	TPT(( 0, FIL__, __LINE__, _("msg=<count == 0>\n")));
	1249	SL_RETURN( countbytes, _("sh_write_select"));
	1250	}
	1251	}
	1252	}
	1253
	1254	*w_error = 0;
	1255
	1256	TPT(( 0, FIL__, __LINE__, _("msg=<count = %d>\n"), countbytes));
	1257	SL_RETURN( countbytes, _("sh_write_select"));
	1258	}
	1259	#endif
	1260
[27]	1261	#if defined (SH_WITH_CLIENT) \|\| defined(SH_WITH_SERVER)
[1]	1262	unsigned long write_port (int sockfd, char *buf, unsigned long nbytes,
	1263	int * w_error, int timeout)
	1264	{
	1265	unsigned long bytes;
	1266
	1267	SL_ENTER(_("write_port"));
	1268
	1269	bytes = sh_write_select(SH_DO_WRITE, sockfd, buf, nbytes, w_error, timeout);
	1270	if (*w_error != 0)
	1271	{
[132]	1272	char errbuf[SH_ERRBUF_SIZE];
[1]	1273	sh_error_handle((-1), FIL__, __LINE__, *w_error, MSG_TCP_NETRP,
[132]	1274	sh_error_message (*w_error, errbuf, sizeof(errbuf)),
	1275	(long) sockfd, _("write_port"));
[1]	1276	}
	1277	SL_RETURN( bytes, _("write_port"));
	1278	}
	1279	#endif
	1280
[27]	1281	#if defined(HAVE_NTIME) \|\| defined(SH_WITH_CLIENT) \|\| defined(SH_WITH_SERVER)
[1]	1282
	1283	unsigned long read_port (int sockfd, char *buf, unsigned long nbytes,
	1284	int * w_error, int timeout)
	1285	{
	1286	unsigned long bytes;
	1287
	1288	SL_ENTER(_("read_port"));
	1289
	1290	bytes = sh_write_select(SH_DO_READ, sockfd, buf, nbytes, w_error, timeout);
	1291	if (*w_error != 0)
	1292	{
[132]	1293	char errbuf[SH_ERRBUF_SIZE];
[1]	1294	sh_error_handle((-1), FIL__, __LINE__, *w_error, MSG_TCP_NETRP,
[132]	1295	sh_error_message (*w_error, errbuf, sizeof(errbuf)),
	1296	(long) sockfd, _("read_port"));
[1]	1297	}
	1298	SL_RETURN( bytes, _("read_port"));
	1299	}
	1300	#endif
	1301
	1302	#if defined(SH_WITH_CLIENT) \|\| defined(SH_WITH_SERVER)
	1303
	1304	int check_request_nerr (char * have, char * need)
	1305	{
	1306	SL_ENTER(_("check_request_nerr"));
	1307	ASSERT_RET((have != NULL && need != NULL),
	1308	_("have != NULL && need != NULL"), (-1))
	1309
	1310	if ( (have[0] == need[0]) && (have[1] == need[1]) &&
	1311	(have[2] == need[2]) && (have[3] == need[3]))
	1312	SL_RETURN(0, _("check_request_nerr"));
	1313	SL_RETURN((-1), _("check_request_nerr"));
	1314	}
	1315	#endif
	1316
[27]	1317	#if defined (SH_WITH_CLIENT) \|\| defined(SH_WITH_SERVER)
[1]	1318
	1319	int check_request (char * have, char * need)
	1320	{
	1321	char first[21], second[5];
	1322	int i;
	1323
	1324	SL_ENTER(_("check_request"));
	1325	i = check_request_nerr (have, need);
	1326
	1327	if (i == 0)
	1328	SL_RETURN(0, _("check_request"));
	1329
	1330	for (i = 0; i < 4; ++i)
	1331	{
	1332	second[i] = need[i];
	1333	sprintf(&first[i4], _("%c%03o"), / known to fit */
	1334	'\\', (unsigned char) have[i]);
	1335	}
	1336
	1337	first[20] = '\0'; second[4] = '\0';
	1338
	1339	sh_error_handle((-1), FIL__, __LINE__, EINVAL, MSG_E_NETST,
	1340	second, first);
	1341	SL_RETURN((-1), _("check_request"));
	1342	}
	1343	#endif
	1344
	1345	#if defined (SH_WITH_SERVER)
	1346
	1347	int check_request_s (char * have, char * need, char * clt)
	1348	{
	1349	char first[21], second[5];
	1350	int i;
	1351
	1352	SL_ENTER(_("check_request_s"));
	1353	i = check_request_nerr (have, need);
	1354
	1355	if (i == 0)
	1356	SL_RETURN( (0), _("check_request_s"));
	1357
	1358	for (i = 0; i < 4; ++i)
	1359	{
	1360	second[i] = need[i];
	1361	sprintf(&first[i4], _("%c%03o"), / known to fit */
	1362	'\\', (unsigned char) have[i]);
	1363	}
	1364	first[20] = '\0'; second[4] = '\0';
	1365	sh_error_handle((-1), FIL__, __LINE__, EINVAL, MSG_E_NETST1,
	1366	second, first, clt);
	1367	SL_RETURN( (-1), _("check_request_s"));
	1368	}
	1369	#endif
	1370
[27]	1371	#if defined (SH_WITH_CLIENT) \|\| defined (SH_WITH_SERVER)
[1]	1372
[481]	1373	#if defined (SH_WITH_CLIENT)
	1374
	1375	static int probe_done = S_FALSE;
	1376	static unsigned char probe_flag = '\0';
	1377
	1378	void sh_tools_probe_reset()
	1379	{
	1380	probe_done = S_FALSE;
	1381	probe_flag = '\0';
	1382	return;
	1383	}
	1384
	1385	static int probe_ok(int flag)
	1386	{
	1387	(void) flag;
	1388	if ((probe_flag & SH_PROTO_IVA) != 0)
	1389	return S_TRUE;
	1390	return S_FALSE;
	1391	}
	1392
	1393	static unsigned char probe_header_set(unsigned char protocol)
	1394	{
	1395	if (probe_done \|\| (protocol & SH_PROTO_SRP) == 0)
	1396	return 0;
	1397
	1398	return (char) SH_PROTO_IVA;
	1399	}
	1400
	1401	static void probe_header_get(unsigned char protocol)
	1402	{
	1403	if (probe_done \|\| (protocol & SH_PROTO_SRP) == 0)
	1404	return;
	1405
	1406	/* If the server doesn't know about it,
	1407	* it will simply mirror it back. */
	1408
	1409	if ((protocol & SH_PROTO_IVA) != 0)
	1410	{
	1411	/* probe was mirrored */;
	1412	}
	1413	else
	1414	{
	1415	/* probe was UNset */
	1416	probe_flag \|= SH_PROTO_IVA;
	1417	}
	1418	probe_done = S_TRUE;
	1419	return;
	1420	}
	1421
	1422	#else
	1423	static unsigned char probe_header_set(unsigned char protocol) {
	1424	(void) protocol; return 0; }
	1425	static void probe_header_get(unsigned char protocol) {
	1426	(void) protocol; return; }
	1427	void sh_tools_probe_reset() { return; }
	1428
	1429	unsigned char sh_tools_probe_store(unsigned char protocol, int * probe_flag)
	1430	{
	1431	if ((protocol & SH_PROTO_SRP) == 0)
	1432	return protocol;
	1433
	1434	if ((protocol & SH_PROTO_IVA) != 0)
	1435	{
	1436	/* probe received */
	1437	*probe_flag \|= SH_PROTO_IVA;
	1438	protocol &= ~SH_PROTO_IVA;
	1439	}
	1440	return protocol;
	1441	}
	1442
	1443	static int probe_ok(int flag)
	1444	{
	1445	if ((flag & SH_PROTO_IVA) != 0)
	1446	return S_TRUE;
	1447	return S_FALSE;
	1448	}
	1449	#endif
	1450
	1451
[1]	1452	void get_header (unsigned char * head, unsigned long * bytes, char * u)
	1453	{
	1454	SL_ENTER(_("get_header"));
	1455
[481]	1456	probe_header_get(head[0]);
	1457
[1]	1458	*bytes =
	1459	(256 * (unsigned int)head[1] + (unsigned int)head[2]);
	1460
	1461	if (u != NULL)
	1462	{
	1463	u[0] = head[3];
	1464	u[1] = head[4];
	1465	u[2] = head[5];
	1466	u[3] = head[6];
	1467	u[4] = '\0';
	1468	}
	1469
	1470	SL_RET0(_("get_header"));
	1471	}
	1472	#endif
	1473
	1474	#if defined(SH_WITH_CLIENT) \|\| defined(SH_WITH_SERVER)
	1475
[481]	1476	#ifdef SH_ENCRYPT
[1]	1477	#define TRANS_BYTES 65120
	1478	#else
	1479	#define TRANS_BYTES 65280
	1480	#endif
	1481
[481]	1482	void put_header (unsigned char * head, const int protocol,
[1]	1483	unsigned long * length, char * u)
	1484	{
[481]	1485	unsigned char probe = probe_header_set(protocol);
[1]	1486
	1487	/* static long transfer_limit = (8 * SH_BUFSIZE); V0.8 */
	1488	static unsigned long transfer_limit = TRANS_BYTES + 6 + KEY_LEN;
	1489
	1490	SL_ENTER(_("put_header"));
	1491
[481]	1492	head[0] = protocol\|probe;
[1]	1493
	1494	ASSERT((length < transfer_limit), _("length < transfer_limit"))
	1495
	1496	if (*length > transfer_limit)
	1497	*length = transfer_limit;
	1498
	1499	head[1] = (unsigned int)(*length/256);
	1500	head[2] = (unsigned int)(length-256 head[1]);
	1501	if (u == NULL)
	1502	{
	1503	head[3] = 0x01;
	1504	head[4] = 0x01;
	1505	head[5] = 0x01;
	1506	head[6] = 0x01;
	1507	}
	1508	else
	1509	{
	1510	head[3] = u[0];
	1511	head[4] = u[1];
	1512	head[5] = u[2];
	1513	head[6] = u[3];
	1514	}
	1515
	1516	SL_RET0(_("put_header"));
	1517	}
	1518
	1519	/* ------------------------------------------
	1520	*
	1521	* version 2 client/server protocol
	1522	*
	1523	* ------------------------------------------
	1524	*
	1525	* header : flag size[2]
	1526	*
	1527	* payload: random_pad[8] protocol[4] size[4] payload[payload_size] padding
	1528	*
	1529	* full_size <= 8192; payload_size <= 8176 (51116); msg_size <= 8128 (50816)
	1530	* (msg_size = payload_size - key_len = payload_size - 48)
	1531	*/
[27]	1532
	1533	/*
	1534	* only SH_V2_FULLSIZE is used, and only once
	1535	*/
[481]	1536
[1]	1537	#define SH_V2_FULLSIZE 1024
	1538
	1539	#ifdef SH_ENCRYPT
	1540	#include "rijndael-api-fst.h"
	1541	#endif
	1542
	1543	void sh_tools_show_header (unsigned char * head, char sign)
	1544	{
	1545	#define SH_IS_ASCII(c) (((c) & ~0x7f) == 0)
	1546
	1547
	1548	int msg_size = (256 * (unsigned int)head[1] + (unsigned int)head[2]);
	1549	char code[32];
	1550	char * p = &code[0];
	1551
	1552	memset (code, ' ', 32); /* space */
	1553
	1554	if ((head[0] & SH_PROTO_SRP) != 0) { p[0]='S';p[1]='R';p[2]='P';}
	1555	p += 4;
	1556	if ((head[0] & SH_PROTO_MSG) != 0) { p[0]='M';p[1]='S';p[2]='G';}
	1557	p += 4;
	1558	if ((head[0] & SH_PROTO_BIG) != 0) { p[0]='B';p[1]='I';p[2]='G';}
	1559	p += 4;
	1560	if ((head[0] & SH_PROTO_END) != 0) { p[0]='E';p[1]='N';p[2]='D';}
	1561	p += 4;
	1562	if ((head[0] & SH_PROTO_ENC) != 0) { p[0]='E';p[1]='N';p[2]='C';}
	1563	p += 4;
	1564	if ((head[0] & SH_PROTO_EN2) != 0) { p[0]='E';p[1]='N';p[2]='2';}
	1565	code[23] = '\0';
	1566
	1567	if (SH_IS_ASCII(head[3]) && isalpha(head[3]) &&
	1568	SH_IS_ASCII(head[4]) && isalpha(head[4]) &&
	1569	SH_IS_ASCII(head[5]) && isalpha(head[5]) &&
	1570	SH_IS_ASCII(head[6]) && isalpha(head[6])) {
[472]	1571	fprintf(stderr, _("%c %3o %s %5d %c %c %c %c\n"), sign,
[1]	1572	head[0], code, msg_size, head[3], head[4], head[5], head[6]);
	1573	} else {
[472]	1574	fprintf(stderr, _("%c %3o %s %5d %2X %2X %2X %2X\n"), sign,
[1]	1575	head[0], code, msg_size, head[3], head[4], head[5], head[6]);
	1576	}
	1577	return;
	1578	}
	1579
	1580	#ifdef SH_ENCRYPT
[481]	1581
[1]	1582	/*
	1583	* #define DEBUG_EN2
	1584	*
	1585	* ingest version 1 7-byte header and payload, return version2 header/payload
	1586	* last 4 bytes of outgoing header are set to dummy value
	1587	*/
[481]	1588	char * sh_tools_makePack (unsigned char * header, int flag,
[34]	1589	char * payload, unsigned long payload_size,
[1]	1590	keyInstance * keyInstE)
	1591	{
[481]	1592	BYTE inBlock[B_SIZ];
	1593	BYTE outBlock[B_SIZ];
	1594	char ivBlock[B_SIZ];
	1595
	1596	UINT32 rpad[3];
[1]	1597	unsigned char head[16];
[481]	1598	double epad;
	1599	unsigned long i_epad = 0;
	1600	unsigned long i_blk = payload_size / 16;
	1601	unsigned long i_blkmax = SH_V2_FULLSIZE / 16;
	1602	unsigned long pads = 0;
	1603	size_t full_size;
	1604	char * full_ret;
[1]	1605
[481]	1606	unsigned char * p;
	1607	int j;
	1608	cipherInstance cipherInst;
	1609	int err_num;
	1610	int blkfac;
	1611	int oflow = 0;
	1612	char expbuf[SH_ERRBUF_SIZE];
[1]	1613
	1614	/*
	1615	SL_REQUIRE (i_blk*16 == payload_size, _("payload_size % 16 != 0"));
	1616	*/
	1617	if ((i_blk * 16) != payload_size) ++i_blk;
[481]	1618
[1]	1619	/* random_pad
	1620	*/
[137]	1621	rpad[1] = taus_get ();
[1]	1622	memcpy (head, &rpad[1], 4);
[137]	1623	rpad[0] = taus_get ();
[1]	1624	memcpy (&head[4], &rpad[0], 4);
[137]	1625	rpad[2] = taus_get ();
[1]	1626	memcpy (&head[8], &rpad[2], 4);
	1627
	1628	/* size (payload)
	1629	*/
	1630	head[12] = header[1];
	1631	head[13] = header[2];
	1632	head[14] = '\0';
	1633	head[15] = '\0';
	1634
	1635	if (i_blk < i_blkmax)
	1636	{
[481]	1637	pads = i_blkmax - i_blk;
	1638	epad = taus_get_double (&rpad);
[34]	1639	i_epad = (unsigned long) (pads * epad);
[1]	1640	}
	1641
[34]	1642	full_size = 16; /* head */
	1643	if (sl_ok_muls(i_blk, 16) && sl_ok_adds(full_size, (i_blk*16)))
	1644	full_size = full_size + (i_blk16); / payload */
	1645	else
	1646	oflow = 1;
	1647	if (sl_ok_adds(full_size, (i_epad*16)))
	1648	full_size = full_size + (i_epad16); / pad */
	1649	else
	1650	i_epad = 0;
[1]	1651
[34]	1652	if (oflow)
	1653	{
	1654	sh_error_handle((-1), FIL__, __LINE__, -1, MSG_E_SUBGEN,
	1655	_("integer overflow"),
	1656	_("sh_tools_makePack"));
	1657	}
	1658
[1]	1659	full_ret = SH_ALLOC(full_size);
[481]	1660
[1]	1661	memcpy(full_ret, head, 16);
[34]	1662	if (payload != NULL && !oflow)
[481]	1663	memcpy(&full_ret[16], payload, payload_size);
	1664
[34]	1665	if ((i_blk*16) > payload_size && !oflow)
[1]	1666	{
	1667	memset(&full_ret[16+payload_size], '\0', (i_blk*16) - payload_size);
	1668	payload_size = i_blk * 16;
	1669	}
	1670	memset(&full_ret[16+payload_size], '\0', i_epad*16);
	1671
	1672	/* rewrite header
	1673	*/
	1674	header[1] = (unsigned int)(full_size/256);
	1675	header[2] = (unsigned int)(full_size - (256 * header[1]));
	1676
[481]	1677	p = (unsigned char *) full_ret;
	1678	blkfac = full_size / B_SIZ;
	1679
	1680	err_num = rijndael_cipherInit (&cipherInst, MODE_CBC, NULL);
[1]	1681
[481]	1682	if (err_num < 0) {
	1683	sh_error_handle((-1), FIL__, __LINE__, -1, MSG_E_SUBGEN,
	1684	errorExplain(err_num, expbuf, sizeof(expbuf)),
	1685	_("sh_tools_makePack: rijndael_cipherInit")); }
	1686
	1687	if (probe_ok(flag)) {
	1688	memcpy(inBlock, p, B_SIZ);
	1689	err_num = rijndael_blockEncrypt(&cipherInst, keyInstE,
	1690	inBlock, 128, outBlock);
	1691	if (err_num >= 0) {
	1692	memcpy(p, outBlock, B_SIZ); p += B_SIZ;
	1693	memcpy(ivBlock, outBlock, sizeof(ivBlock));
	1694	err_num = rijndael_cipherInit (&cipherInst, MODE_CBC, ivBlock);
	1695	if (err_num >= 0) {
	1696	err_num = rijndael_blockEncrypt(&cipherInst, keyInstE,
	1697	p, 128*(blkfac-1), p);
	1698	}
[1]	1699	}
[481]	1700	}
	1701
	1702	else {
	1703	for (j = 0; j < blkfac; ++j) {
[1]	1704	memcpy(inBlock, p, B_SIZ);
[481]	1705	err_num = rijndael_blockEncrypt(&cipherInst, keyInstE,
	1706	inBlock, 128, outBlock);
	1707
	1708	if (err_num < 0) {
	1709	sh_error_handle((-1), FIL__, __LINE__, -1, MSG_E_SUBGEN,
	1710	errorExplain(err_num, expbuf, sizeof(expbuf)),
	1711	_("sh_tools_makePack: rijndael_blockEncrypt"));
	1712	break; }
	1713
[1]	1714	memcpy(p, outBlock, B_SIZ);
	1715	p += B_SIZ;
	1716	}
[481]	1717	}
[1]	1718
	1719	return full_ret;
	1720	}
	1721
	1722	/* write a 7-byte header and return payload as expected by version 1
	1723	* last 4 bytes of incoming header are dummy
	1724	*/
[481]	1725	char * sh_tools_revertPack (unsigned char * header, int flag, char * message,
[1]	1726	keyInstance * keyInstD,
	1727	unsigned long message_size)
	1728	{
[481]	1729	BYTE inBlock[B_SIZ];
	1730	BYTE outBlock[B_SIZ];
	1731	char ivBlock[B_SIZ];
[1]	1732	unsigned long msg_size;
	1733	char * msg_ret;
	1734
[481]	1735	unsigned char * p;
[1]	1736	int j;
	1737	cipherInstance cipherInst;
	1738	int err_num;
	1739	int blkfac;
[132]	1740	char expbuf[SH_ERRBUF_SIZE];
[1]	1741
	1742	msg_size = (256 * (unsigned int)header[1] + (unsigned int)header[2]);
[481]	1743	if (msg_size > message_size)
[1]	1744	msg_size = message_size;
	1745
[481]	1746	p = (unsigned char *) message; blkfac = msg_size / 16;
[1]	1747
[481]	1748	err_num = rijndael_cipherInit (&cipherInst, MODE_CBC, NULL);
[1]	1749
	1750	if (err_num < 0)
	1751	{
	1752	sh_error_handle((-1), FIL__, __LINE__, -1, MSG_E_SUBGEN,
[132]	1753	errorExplain(err_num, expbuf, sizeof(expbuf)),
[481]	1754	_("sh_tools_revertPack: rijndael_cipherInit"));
[1]	1755	}
[481]	1756
	1757	if (probe_ok(flag)) {
	1758	memcpy(inBlock, p, B_SIZ);
	1759	err_num = rijndael_blockDecrypt(&cipherInst, keyInstD,
	1760	inBlock, 128, outBlock);
	1761	if (err_num >= 0) {
	1762	memcpy(p, outBlock, B_SIZ); p += B_SIZ;
	1763	memcpy(ivBlock, inBlock, sizeof(ivBlock));
	1764	err_num = rijndael_cipherInit (&cipherInst, MODE_CBC, ivBlock);
	1765	if (err_num >= 0) {
	1766	err_num = rijndael_blockDecrypt(&cipherInst, keyInstD,
	1767	p, 128*(blkfac-1), p);
	1768	}
	1769	}
	1770	}
	1771
	1772	else {
	1773	for (j = 0; j < blkfac; ++j) {
[1]	1774	memcpy(inBlock, p, B_SIZ);
[481]	1775	err_num = rijndael_blockDecrypt(&cipherInst, keyInstD,
	1776	inBlock, 128, outBlock);
	1777
	1778	if (err_num < 0) {
	1779	sh_error_handle((-1), FIL__, __LINE__, -1, MSG_E_SUBGEN,
	1780	errorExplain(err_num, expbuf, sizeof(expbuf)),
	1781	_("sh_tools_revertPack: rijndael_blockDecrypt"));
	1782	break; }
	1783
[1]	1784	memcpy(p, outBlock, B_SIZ);
	1785	p += B_SIZ;
	1786	}
[481]	1787	}
	1788
[1]	1789	/* rewrite size in header
	1790	*/
	1791	header[1] = message[12];
	1792	header[2] = message[13];
	1793	msg_size = (256 * (unsigned int)header[1] + (unsigned int)header[2]);
	1794
	1795	if (msg_size > (message_size-16))
	1796	{
	1797	msg_size = message_size-16;
	1798	header[1] = (unsigned int)(msg_size/256);
	1799	header[2] = (unsigned int)(msg_size - (256 * header[1]));
	1800	}
	1801
	1802	/* payload
	1803	*/
	1804	msg_ret = SH_ALLOC(msg_size+1);
	1805	if (msg_size > 0)
[481]	1806	memcpy(msg_ret, &message[16], msg_size);
[1]	1807	msg_ret[msg_size] = '\0';
[481]	1808
[1]	1809	SH_FREE(message);
	1810	return msg_ret;
	1811	}
[481]	1812	#endif /* #ifdef SH_ENCRYPT */
[1]	1813
	1814	int sh_tools_hash_add(char * key, char * buf, int buflen)
	1815	{
	1816	char * theSig;
[133]	1817	char sigbuf[KEYBUF_SIZE];
[1]	1818
	1819	SL_ENTER(_("sh_tools_hash_add"));
	1820
[133]	1821	theSig = sh_util_siggen (key, buf, buflen, sigbuf, sizeof(sigbuf));
[1]	1822	sl_strlcat(buf, theSig, buflen + KEY_LEN + 1);
	1823
	1824	SL_RETURN((0), _("sh_tools_hash_add"));
	1825	}
	1826
	1827
	1828	/* return 0 (== FALSE) if no match, else 1 (== TRUE)
	1829	*/
	1830	int sh_tools_hash_vfy(char * key, char * buf, int buflen)
	1831	{
	1832	char hash[KEY_LEN+1];
	1833	register int i;
	1834	char * theSig;
[133]	1835	char sigbuf[KEYBUF_SIZE];
[1]	1836
	1837	SL_ENTER(_("sh_tools_hash_vfy"));
	1838
[133]	1839	theSig = sh_util_siggen (key, buf, buflen, sigbuf, sizeof(sigbuf));
[1]	1840	sl_strlcpy(hash, theSig, KEY_LEN+1);
	1841
	1842	for (i = 0; i < KEY_LEN; ++i)
	1843	{
	1844	if (buf[buflen + i] != hash[i])
	1845	SL_RETURN((0), _("sh_tools_hash_vfy"));
	1846	}
	1847
	1848	SL_RETURN((1), _("sh_tools_hash_vfy"));
	1849	}
	1850
[481]	1851	#endif /* defined(SH_WITH_CLIENT) \|\| defined(SH_WITH_SERVER) */
	1852
	1853
[1]	1854	/* ------------------------------------------ */
	1855
	1856	#if defined (SH_WITH_SERVER)
	1857
	1858	/* add a checksum to a buffer; put checksum in front
	1859	*/
	1860	char * hash_me (char * key, char * buf, int buflen)
	1861	{
	1862	char hash[KEY_LEN+1];
[34]	1863	char * temp = NULL;
[1]	1864	register int i;
	1865	int total = 0;
	1866	char * theSig;
[133]	1867	char sigbuf[KEYBUF_SIZE];
[1]	1868
	1869
	1870	SL_ENTER(_("hash_me"));
	1871
	1872	#ifdef DEBUG_EN2
	1873	fprintf(stderr, "hash_me <%s> <%d>\n",
	1874	(key == NULL) ? "NULL" : key, buflen);
	1875	#endif
	1876	/* key = H(NSRV,NCLT,SK)
	1877	*/
	1878	ASSERT_RET((key != NULL), _("key != NULL"), (NULL));
	1879	ASSERT_RET((buflen >= 0), _("buflen >= 0"), (NULL));
	1880
[133]	1881	theSig = sh_util_siggen (key, buf, buflen, sigbuf, sizeof(sigbuf));
[1]	1882	sl_strlcpy(hash, theSig, KEY_LEN+1);
	1883
[34]	1884	if (sl_ok_adds(buflen, KEY_LEN))
	1885	{
	1886	total = KEY_LEN + buflen;
	1887	temp = SH_ALLOC (total);
[1]	1888
[34]	1889	for (i = 0; i < KEY_LEN; ++i)
	1890	temp[i] = hash[i];
[1]	1891
[34]	1892	for (i = 0; i < buflen; ++i)
	1893	temp[i+KEY_LEN] = buf[i];
	1894	}
	1895	else
	1896	{
	1897	sh_error_handle((-1), FIL__, __LINE__, -1, MSG_E_SUBGEN,
	1898	_("integer overflow"),
	1899	_("hash_me"));
	1900	temp = sh_util_strdup(buf);
	1901	}
[1]	1902	SL_RETURN(temp, _("hash_me"));
	1903	}
	1904	#endif
	1905
[27]	1906	#if defined(SH_WITH_CLIENT) \|\| defined(SH_WITH_SERVER)
[1]	1907
	1908	/* verify the checksum of a buffer; checksum comes first
	1909	*/
	1910	int hash_check(char * key,
	1911	char * buf, int buflen)
	1912	{
	1913	char hash[KEY_LEN+1];
	1914	register int i;
	1915	char * theSig;
[133]	1916	char sigbuf[KEYBUF_SIZE];
[1]	1917
	1918	SL_ENTER(_("hash_check"));
	1919
	1920	#ifdef DEBUG_EN2
	1921	fprintf(stderr, "hash_check <%s> <%d>\n",
	1922	(key == NULL) ? "NULL" : key, buflen);
	1923	#endif
[133]	1924	theSig = sh_util_siggen (key, &buf[KEY_LEN], buflen-KEY_LEN,
	1925	sigbuf, sizeof(sigbuf));
[1]	1926	sl_strlcpy(hash, theSig, KEY_LEN+1);
	1927
	1928	for (i = 0; i < KEY_LEN; ++i)
	1929	{
	1930	if (buf[i] != hash[i])
	1931	SL_RETURN((-1), _("hash_check"));
	1932	}
	1933	SL_RETURN((0), _("hash_check"));
	1934	}
	1935
	1936	#endif
	1937
	1938	#if defined (SH_WITH_SERVER)
	1939
[481]	1940	char * get_client_conf_file (const char * peer, unsigned long * length)
[1]	1941	{
	1942	char * ret;
[34]	1943	int status;
[1]	1944	struct stat buf;
	1945	char * base;
	1946
	1947	SL_ENTER(_("get_client_conf_file"));
	1948
[34]	1949	base = sh_util_strdup(DEFAULT_DATAROOT);
[481]	1950	ret = sh_util_strconcat(base, _("/rc."), peer, NULL);
	1951	if (!ret)
	1952	{ SH_FREE(base); *length = 0; SL_RETURN(NULL, _("get_client_conf_file")); }
[1]	1953
	1954	status = retry_stat (FIL__, __LINE__, ret, &buf);
	1955	if (status == 0)
	1956	goto lab_end;
	1957	else
	1958	sh_error_handle(SH_ERR_WARN, FIL__, __LINE__, status, MSG_E_ACCESS,
	1959	(long) sh.effective.uid, ret);
	1960
[481]	1961	SH_FREE(ret); ret = sh_util_strconcat(base, _("/rc"), NULL);
	1962	if (!ret)
	1963	{ SH_FREE(base); *length = 0; SL_RETURN(NULL, _("get_client_conf_file")); }
[1]	1964
	1965	status = retry_stat (FIL__, __LINE__, ret, &buf);
	1966	if (status == 0)
	1967	goto lab_end;
	1968	else
	1969	sh_error_handle(SH_ERR_ERR, FIL__, __LINE__, status, MSG_E_ACCESS,
	1970	(long) sh.effective.uid, ret);
	1971
[481]	1972	SH_FREE(base); SH_FREE(ret); *length=0;
[1]	1973	SL_RETURN(NULL, _("get_client_conf_file"));
	1974
	1975	lab_end:
	1976	if (buf.st_size > 0x7fffffff)
	1977	{
	1978	sh_error_handle(SH_ERR_ERR, FIL__, __LINE__, status, MSG_E_SUBGEN,
	1979	_("File too large"), _("get_client_conf_file"));
[481]	1980	SH_FREE(base); SH_FREE(ret); *length = 0;
[1]	1981	SL_RETURN(NULL, _("get_client_conf_file"));
	1982	}
[481]	1983
	1984	SH_FREE(base); *length = (unsigned long) buf.st_size;
[1]	1985	SL_RETURN(ret, _("get_client_conf_file"));
	1986	}
	1987
[481]	1988	char * get_client_data_file (const char * peer, unsigned long * length)
[1]	1989	{
	1990	char * ret;
[34]	1991	int status;
[1]	1992	struct stat buf;
	1993	char * base;
	1994
	1995	SL_ENTER(_("get_client_data_file"));
	1996
[34]	1997	base = sh_util_strdup(DEFAULT_DATAROOT);
[481]	1998	ret = sh_util_strconcat(base, _("/file."), peer, NULL);
	1999	if (!ret)
	2000	{ SH_FREE(base); *length = 0; SL_RETURN(NULL, _("get_client_data_file")); }
[1]	2001
	2002	status = retry_stat (FIL__, __LINE__, ret, &buf);
	2003	if (status == 0)
	2004	goto lab1_end;
	2005	else
	2006	sh_error_handle(SH_ERR_WARN, FIL__, __LINE__, status, MSG_E_ACCESS,
	2007	(long) sh.effective.uid, ret);
	2008
[481]	2009	SH_FREE(ret);
	2010	ret = sh_util_strconcat(base, _("/file"), NULL);
	2011	if (!ret)
	2012	{ SH_FREE(base); *length = 0; SL_RETURN(NULL, _("get_client_data_file")); }
[1]	2013
	2014	status = retry_stat (FIL__, __LINE__, ret, &buf);
	2015	if (status == 0)
	2016	goto lab1_end;
	2017	else
	2018	sh_error_handle(SH_ERR_WARN, FIL__, __LINE__, status, MSG_E_ACCESS,
	2019	(long) sh.effective.uid, ret);
	2020
[481]	2021	*length = 0; SH_FREE(base); SH_FREE(ret);
[1]	2022	SL_RETURN(NULL, _("get_client_data_file"));
	2023
	2024	lab1_end:
	2025	if (buf.st_size > 0x7fffffff)
	2026	{
	2027	sh_error_handle(SH_ERR_ERR, FIL__, __LINE__, status, MSG_E_SUBGEN,
	2028	_("File too large"), _("get_client_data_file"));
[481]	2029	SH_FREE(base); SH_FREE(ret); *length = 0;
[1]	2030	SL_RETURN(NULL, _("get_client_data_file"));
	2031	}
[481]	2032
	2033	*length = (unsigned long) buf.st_size; SH_FREE(base);
[1]	2034	SL_RETURN(ret, _("get_client_data_file"));
	2035	}
[481]	2036
	2037	char * get_client_uuid_file (const char * peer, unsigned long * length, const char * uuid)
	2038	{
	2039	char * ret;
	2040	int status;
	2041	struct stat buf;
	2042	char * base;
	2043
	2044	SL_ENTER(_("get_client_uuid_file"));
	2045
	2046	base = sh_util_strdup(DEFAULT_DATAROOT);
	2047	ret = sh_util_strconcat(base, _("/file."), peer, ".", uuid, NULL);
	2048	SH_FREE(base);
	2049	if (!ret)
	2050	{ *length = 0; SL_RETURN(NULL, _("get_client_uuid_file")); }
	2051
	2052	status = retry_stat (FIL__, __LINE__, ret, &buf);
	2053	if (status != 0)
	2054	{
	2055	sh_error_handle(SH_ERR_ERR, FIL__, __LINE__, status, MSG_E_ACCESS,
	2056	(long) sh.effective.uid, ret);
	2057	SH_FREE(ret); *length = 0;
	2058	SL_RETURN(NULL, _("get_client_uuid_file"));
	2059	}
	2060	else if (buf.st_size > 0x7fffffff)
	2061	{
	2062	sh_error_handle(SH_ERR_ERR, FIL__, __LINE__, status, MSG_E_SUBGEN,
	2063	_("File too large"), _("get_client_uuid_file"));
	2064	SH_FREE(ret); *length = 0;
	2065	SL_RETURN(NULL, _("get_client_data_file"));
	2066	}
	2067
	2068	*length = (unsigned long) buf.st_size;
	2069	SL_RETURN(ret, _("get_client_uuid_file"));
	2070	}
	2071
[1]	2072	#endif
	2073
[27]	2074	#if defined(SH_WITH_CLIENT) \|\| defined(SH_WITH_SERVER) \|\| defined(SH_STEALTH) \|\| defined(WITH_GPG) \|\| defined(WITH_PGP)
[1]	2075
	2076	/* --------- secure temporary file ------------ */
	2077
	2078	SL_TICKET open_tmp ()
	2079	{
	2080	SL_TICKET fd;
	2081	UINT32 ticks;
	2082	char * file;
	2083	struct stat buf;
	2084	int error;
	2085	int status = BAD;
	2086	char * my_tmp_dir;
[133]	2087	char hashbuf[KEYBUF_SIZE];
[1]	2088
	2089	SL_ENTER(_("open_tmp"));
	2090
	2091	#if defined(SH_TMPDIR)
[34]	2092	my_tmp_dir = sh_util_strdup(SH_TMPDIR);
[1]	2093	#else
	2094	#if defined(SH_WITH_SERVER)
[34]	2095	my_tmp_dir = sh_util_strdup(DEFAULT_LOGDIR);
[1]	2096	#else
[34]	2097	my_tmp_dir = sh_util_strdup(sh.effective.home);
[1]	2098	#endif
	2099	#endif
	2100
	2101	if (0 != tf_trust_check (my_tmp_dir, SL_YESPRIV))
	2102	{
	2103	dlog(1, FIL__, __LINE__,
	2104	_("The directory for temporary files: %s is untrusted, i.e. an\nuntrusted user owns or can write to some directory in the path.\n"),
	2105	my_tmp_dir);
	2106	sh_error_handle ((-1), FIL__, __LINE__, EACCES, MSG_TRUST,
	2107	(long) sh.effective.uid,
	2108	my_tmp_dir);
	2109	SH_FREE(my_tmp_dir);
	2110	aud_exit (FIL__, __LINE__, EXIT_FAILURE);
	2111	}
	2112
	2113	do {
	2114
	2115	/* create random filename in effective users home directory
	2116	*/
[137]	2117	ticks = taus_get ();
[1]	2118	if (my_tmp_dir[0] == '/' && my_tmp_dir[1] == '\0')
	2119	file = sh_util_strconcat (my_tmp_dir,
[133]	2120	sh_tiger_hash( (char *) &ticks, TIGER_DATA, 4,
	2121	hashbuf, sizeof(hashbuf)),
[1]	2122	NULL);
	2123	else
	2124	file = sh_util_strconcat (my_tmp_dir,
	2125	"/",
[133]	2126	sh_tiger_hash( (char *) &ticks, TIGER_DATA, 4,
	2127	hashbuf, sizeof(hashbuf)),
[1]	2128	NULL);
	2129
	2130	/* check whether it already exists (paranoia)
	2131	*/
	2132	errno = 0;
	2133	status = retry_lstat(FIL__, __LINE__, file, &buf);
	2134	error = errno;
	2135
	2136	if ( (status < 0) && (error == ENOENT) ) /* file does not exist */
	2137	status = GOOD;
	2138	else if (status < 0) /* unexpected error condition */
	2139	{
	2140	SH_FREE (file);
	2141	SH_FREE(my_tmp_dir);
[169]	2142	sh_error_handle(SH_ERR_ALL, FIL__, __LINE__, status, MSG_E_SUBGEN,
	2143	_("Error (lstat) while opening temporary file"), _("open_tmp"));
[1]	2144	TPT(( 0, FIL__, __LINE__, _("msg=<Unexpected error %d>\n"), error));
	2145	SL_RETURN((-1), _("open_tmp"));
	2146	}
	2147	else /* file exists */
	2148	{
	2149	status = BAD;
	2150	TPT(( 0, FIL__, __LINE__, _("msg=<Temporary file exists already>\n")));
	2151	}
	2152
	2153	if (status == GOOD)
	2154	{
	2155	if (0 == tf_trust_check (file, SL_YESPRIV))
	2156	status = GOOD;
	2157	else
	2158	{
	2159	status = BAD;
	2160	TPT(( 0, FIL__, __LINE__, _("msg=<Temporary file untrusted>\n")));
	2161	}
	2162	}
	2163
	2164	if (status == BAD)
	2165	SH_FREE (file);
	2166
	2167	} while (status == BAD);
	2168
[248]	2169	fd = sl_open_safe_rdwr (FIL__, __LINE__, file, SL_YESPRIV);
[1]	2170	if (SL_ISERROR(fd))
	2171	{
[481]	2172	sh_error_handle((-1), FIL__, __LINE__, fd, MSG_E_SUBGEN,
[1]	2173	_("Error opening temporary file"), _("open_tmp"));
	2174	TPT(( 0, FIL__, __LINE__, _("msg=<Error %d temporary file %s>\n"),
	2175	fd, file));
	2176	}
	2177
	2178	SH_FREE (file);
	2179	SH_FREE(my_tmp_dir);
	2180
	2181	if (!SL_ISERROR(fd)) {
	2182	sl_unlink(fd);
	2183	}
	2184
	2185	if (!SL_ISERROR(fd))
	2186	SL_RETURN((fd), _("open_tmp"));
	2187	else
	2188	SL_RETURN((-1), _("open_tmp"));
	2189	}
	2190
	2191
	2192	int close_tmp (SL_TICKET fd)
	2193	{
	2194	SL_ENTER(_("close_tmp"));
	2195
	2196	if (SL_ISERROR(sl_close (fd)))
	2197	SL_RETURN((-1), _("close_tmp"));
	2198	SL_RETURN((0), _("close_tmp"));
	2199	}
	2200
	2201	int rewind_tmp (SL_TICKET fd)
	2202	{
	2203	SL_ENTER(_("rewind_tmp"));
	2204
	2205	if (SL_ISERROR(sl_rewind (fd)))
	2206	SL_RETURN((-1), _("rewind_tmp"));
	2207	SL_RETURN((0), _("rewind_tmp"));
	2208	}
	2209	#endif
[425]	2210
	2211	/********************************************************
	2212	* Search rotated logfile
	2213	*/
	2214	#include <unistd.h>
	2215	#include <libgen.h>
	2216	#include <dirent.h>
	2217
	2218	char * sh_rotated_log_search(const char * path, struct stat * buf)
	2219	{
	2220
	2221	size_t size;
	2222	int i;
	2223	char * searchpath;
	2224	struct stat sbuf;
	2225	DIR * dp;
	2226	char * dname;
	2227	char * bname;
	2228
	2229	dname = sh_util_dirname(path);
	2230	bname = sh_util_basename(path);
	2231
	2232	size = strlen(dname) + strlen(bname) + 4;
	2233	searchpath = SH_ALLOC(size);
	2234
	2235	for (i = 0; i < 2; ++i)
	2236	{
	2237	snprintf(searchpath, size, "%s/%s.%1d", dname, bname, i);
	2238	if (0 == stat(searchpath, &sbuf) && sbuf.st_ino == buf->st_ino)
	2239	{
	2240	SH_FREE(dname);
	2241	SH_FREE(bname);
	2242	return searchpath;
	2243	}
	2244	}
	2245
	2246	SH_FREE(searchpath);
	2247
	2248	if (NULL != (dp = opendir(dname)))
	2249	{
	2250	struct dirent * de;
	2251
	2252	while (NULL != (de = readdir(dp)))
	2253	{
	2254	if (0 == strcmp(de->d_name, ".") \|\| 0 == strcmp(de->d_name, ".."))
	2255	continue;
	2256
	2257	size = strlen(dname) + strlen(de->d_name) + 2;
	2258	searchpath = SH_ALLOC(size);
	2259	snprintf(searchpath, size, "%s/%s", dname, de->d_name);
	2260
	2261	if (0 == stat(searchpath, &sbuf) && sbuf.st_ino == buf->st_ino)
	2262	{
	2263	SH_FREE(dname);
	2264	SH_FREE(bname);
	2265	closedir(dp);
	2266	return searchpath;
	2267	}
	2268
	2269	SH_FREE(searchpath);
	2270	}
	2271	closedir(dp);
	2272	}
	2273
	2274	SH_FREE(dname);
	2275	SH_FREE(bname);
	2276
	2277	return NULL;
	2278	}
	2279

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