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source: trunk/src/sh_mail.c@ 275

Last change on this file since 275 was 275, checked in by katerina, 15 years ago
Fix for ticket #195 (broken immediate mailing of highest priority messages).
File size: 44.9 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	#include <stdio.h>
	23	#include <stdlib.h>
	24	#include <string.h>
	25	#include <unistd.h>
	26	#include <pwd.h>
	27	#include <sys/types.h>
	28	#include <sys/stat.h>
	29	#include <fcntl.h>
	30	#include <errno.h>
	31	#include <signal.h>
	32	#include <setjmp.h>
	33
	34	#if defined(SH_WITH_MAIL)
	35
	36	#if TIME_WITH_SYS_TIME
	37	#include <sys/time.h>
	38	#include <time.h>
	39	#else
	40	#if HAVE_SYS_TIME_H
	41	#include <sys/time.h>
	42	#else
	43	#include <time.h>
	44	#endif
	45	#endif
	46
	47
	48	#ifdef HAVE_MEMORY_H
	49	#include <memory.h>
	50	#endif
	51
	52	#include "samhain.h"
	53	#include "sh_error.h"
	54	#include "sh_unix.h"
	55	#include "sh_tiger.h"
	56	#include "sh_mail.h"
	57	#include "sh_utils.h"
	58	#include "sh_fifo.h"
	59	#include "sh_tools.h"
[137]	60	#include "sh_pthread.h"
[215]	61	#include "sh_filter.h"
[214]	62	#include "sh_mail_int.h"
	63	#include "sh_nmail.h"
[1]	64
	65	#undef FIL__
	66	#define FIL__ _("sh_mail.c")
	67	#undef GOOD
	68	#undef BAD
	69
	70	static int failedMail = SL_FALSE;
	71
	72	static dnsrep * return_mx (char *domain);
	73
	74	/*********************************************
	75	* utility function for verifying mails
	76	*********************************************/
	77
	78	typedef struct mail_trail_struct {
	79	char trail_id[2*SH_MINIBUF];
	80	char trail_key[KEY_LEN+1];
	81	struct mail_trail_struct * next;
	82	} mail_trail_type;
	83
	84	static mail_trail_type * mail_trail = NULL;
	85
[20]	86	int sh_mail_sigverify (const char * s)
[1]	87	{
	88	SL_TICKET fd;
	89	long i;
	90	char * buf;
	91	char * bufc;
	92	char key[81];
	93	char number[2*SH_MINIBUF];
	94	char audit_id[2 * SH_MINIBUF];
	95	long numsig;
	96	char key2[KEY_LEN+1];
	97
	98	char * theSig;
	99
	100	mail_trail_type * mail_trail_ptr = NULL;
	101
	102	sh_error_logoff();
	103
	104	ASSERT((s != NULL && sl_strlen(s) < PATH_MAX),
	105	_("(s != NULL && sl_strlen(s) < PATH_MAX)"));
	106
	107	if (s == NULL \|\| sl_strlen(s) >= PATH_MAX)
	108	_exit (EXIT_FAILURE);
	109
	110	/* open the file, then check it
	111	*/
	112	if (0 != sl_is_suid())
	113	{
	114	fprintf(stderr, _("Cannot open file %s in suid mode\n"), s);
	115	_exit (EXIT_FAILURE);
	116	}
[248]	117	if ( SL_ISERROR(fd = sl_open_read (FIL__, __LINE__, s, SL_NOPRIV)))
[1]	118	{
	119	fprintf(stderr, _("Could not open file %s\n"), s);
	120	_exit (EXIT_FAILURE);
	121	}
	122
[170]	123	buf = SH_ALLOC( (size_t)(SH_MSG_BUF+SH_BUFSIZE+1));
	124	bufc = SH_ALLOC( (size_t)(SH_MSG_BUF+SH_MAXBUF+1));
[1]	125
	126	while (1 == 1)
	127	{
	128	buf[0] = '\0';
	129	bufc[0] = '\0';
	130
	131	/* find start of next message
	132	*/
	133	while (0 != sl_strncmp(buf, _("-----BEGIN MESSAGE-----"),
	134	sizeof("-----BEGIN MESSAGE-----")-1))
	135	{
[170]	136	(void) sh_unix_getline (fd, buf, SH_MSG_BUF+SH_BUFSIZE);
[1]	137	if (buf[0] == '\0')
	138	{
	139	/* End of mailbox reached, exit.
	140	*/
	141	(void) fflush(stdout);
	142	_exit (EXIT_SUCCESS);
	143
	144	/* Fix for AIX cc complaint.
	145	*/
	146	/@notreached@/
	147	return 0;
	148	}
	149	}
	150
	151	/* Read message, compress into bufc.
	152	*/
	153	while (1 == 1)
	154	{
[170]	155	(void) sh_unix_getline (fd, buf, SH_MSG_BUF+SH_BUFSIZE);
[1]	156	if (0 == sl_strncmp(buf, _("-----BEGIN SIGNATURE-----"),
	157	sizeof("-----BEGIN SIGNATURE-----")-1))
	158	break;
	159	if (buf[0] == '\0')
	160	_exit (EXIT_FAILURE);
[170]	161	(void) sh_util_compress(bufc, buf, SH_MSG_BUF+SH_MAXBUF-KEY_LEN);
[1]	162	}
	163
	164	/* get signature and number
	165	*/
[34]	166	(void) sh_unix_getline (fd, key, (int)sizeof(key));
[1]	167	key[KEY_LEN] = '\0';
	168
[34]	169	(void) sh_unix_getline (fd, number, (int)sizeof(number));
[1]	170	number[(2*SH_MINIBUF) - 2] = '\0';
	171	numsig = atol (number);
	172	(void) sl_strlcpy (audit_id, &number[7], 2*SH_MINIBUF);
	173
	174	fprintf(stderr, _("Message %06ld Trail %s\n"),
	175	numsig, /@-usedef@/ audit_id /@+usedef@/);
	176
	177	mail_trail_ptr = mail_trail;
	178	while (mail_trail_ptr)
	179	{
	180	if (0 == sl_strcmp(mail_trail_ptr->trail_id, audit_id))
	181	break;
	182	mail_trail_ptr = mail_trail_ptr->next;
	183	}
	184
	185	if (!mail_trail_ptr)
	186	{
	187	if (numsig > 0)
	188	{
[210]	189	fprintf (stderr, "%s",_("ERROR (no key -- cannot check)\n"));
[1]	190	continue;
	191	}
	192	else
	193	{
	194	mail_trail_ptr = SH_ALLOC (sizeof(mail_trail_type));
	195	mail_trail_ptr->next = mail_trail;
	196	mail_trail = mail_trail_ptr;
	197	(void) sl_strlcpy (mail_trail_ptr->trail_id,
	198	audit_id, 2*SH_MINIBUF);
	199	}
	200	}
	201	else if (numsig == 0)
	202	{
[210]	203	fprintf (stderr, "%s",_("ERROR (repeated audit trail)\n"));
[1]	204	continue;
	205	}
	206
	207
	208	if (numsig == 0)
	209	{
	210	sh_util_encode(key, bufc, 1, 'A');
	211	(void) sl_strlcpy (mail_trail_ptr->trail_key, key, KEY_LEN+1);
[210]	212	fprintf (stderr, "%s",_("(unchecked)\n"));
[1]	213	}
	214	else
	215	{
[133]	216	char sigbuf[KEYBUF_SIZE];
	217
[1]	218	/* iterate key
	219	*/
	220	(void) sl_strlcpy(key2, mail_trail_ptr->trail_key, KEY_LEN+1);
	221	for (i = 0; i < numsig; ++i)
	222	{
[133]	223	char hashbuf[KEYBUF_SIZE];
[1]	224	(void) sl_strlcpy (key2,
[133]	225	sh_tiger_hash (key2, TIGER_DATA, KEY_LEN,
	226	hashbuf, sizeof(hashbuf)),
[1]	227	KEY_LEN+1);
	228	}
	229
	230
[133]	231	theSig = sh_util_siggen (key2, bufc, sl_strlen(bufc), sigbuf, sizeof(sigbuf));
[1]	232	if (sl_strncmp (key,
	233	theSig,
	234	KEY_LEN) != 0)
	235	{
[210]	236	fprintf (stderr, "%s",_("(FAILED)\n"));
[1]	237	}
	238	else
	239	{
[210]	240	fprintf (stderr, "%s",_("(passed)\n"));
[1]	241	}
	242
	243	}
	244
	245	} /* end scan mailbox */
	246
	247	/@notreached@/
	248	}
	249
[22]	250	int sh_mail_setNum (const char * str)
[1]	251	{
	252	int i = atoi (str);
	253
	254	SL_ENTER(_("sh_mail_setNum"));
	255
	256	if (i >= 0 && i < SH_FIFO_MAX)
	257	sh.mailNum.alarm_interval = (time_t) i;
	258	else
	259	SL_RETURN ((-1), _("sh_mail_setNum"));
	260	SL_RETURN( (0), _("sh_mail_setNum"));
	261	}
	262
	263
[214]	264	int sh_mail_all_in_one = S_FALSE;
[1]	265
[22]	266	int sh_mail_setFlag (const char * str)
[1]	267	{
	268	int i;
	269	SL_ENTER(_("sh_mail_setFlag"));
[214]	270	i = sh_util_flagval(str, &sh_mail_all_in_one);
[1]	271	SL_RETURN(i, _("sh_mail_setFlag"));
	272	}
	273
	274	static char * mail_subject = NULL;
	275
[22]	276	int set_mail_subject (const char * str)
[1]	277	{
	278	SL_ENTER(_("set_mail_subject"));
	279	if (!str)
	280	SL_RETURN( (-1), _("set_mail_subject"));
	281
	282	if (mail_subject != NULL)
	283	SH_FREE(mail_subject);
	284
	285	if (0 == sl_strncmp(str, _("NULL"), 4))
	286	{
	287	mail_subject = NULL;
	288	SL_RETURN( 0, _("set_mail_subject"));
	289	}
	290
	291	mail_subject = sh_util_strdup(str);
	292	SL_RETURN( (0), _("set_mail_subject"));
	293	}
	294
[214]	295	SH_MUTEX_INIT(mutex_fifo_mail, PTHREAD_MUTEX_INITIALIZER);
[1]	296
[214]	297	SH_FIFO * fifo_mail = NULL;
[1]	298
	299	static
	300	void sh_mail_emptystack (void)
	301	{
	302	char * msg;
	303	size_t len;
	304
	305	SL_ENTER(_("sh_mail_emptystack"));
	306
	307	if (fifo_mail == NULL)
	308	SL_RET0(_("sh_mail_emptystack"));
	309
[214]	310	SH_MUTEX_LOCK(mutex_fifo_mail);
[1]	311	while (NULL != (msg = pop_list(fifo_mail)))
	312	{
	313	len = sl_strlen(msg);
	314	memset(msg, 0, len);
	315	SH_FREE(msg);
	316	}
[214]	317	SH_MUTEX_UNLOCK(mutex_fifo_mail);
[1]	318
	319	SL_RET0(_("sh_mail_emptystack"));
	320	}
	321
	322	/* insert "\r\n" after each 998 char
	323	*/
[214]	324	static char * split_string(const char * str);
[1]	325
[214]	326	/* fixes warning: variable âpâ might be clobbered by âlongjmpâ or âvforkâ*/
	327	static char ** p_dummy;
	328
	329	int sh_mail_pushstack (int severity, const char * msg, const char * alias)
[1]	330	{
	331	char * p;
[214]	332	volatile int retval = 0;
[1]	333	int status;
	334
	335	SL_ENTER(_("sh_mail_pushstack"));
	336
[214]	337	if (msg == NULL \|\| failedMail == SL_TRUE /* \|\| sh.srvmail.name[0] == '\0' */)
[1]	338	SL_RETURN((0), (_("sh_mail_pushstack")));
	339
[214]	340	p = split_string(msg);
	341	/* fixes "variable âpâ might be clobbered by âlongjmpâ or âvforkâ" */
	342	p_dummy = &p;
[1]	343
[214]	344	SH_MUTEX_LOCK(mutex_fifo_mail);
[1]	345
	346	if (fifo_mail == NULL)
	347	{
	348	fifo_mail = SH_ALLOC(sizeof(SH_FIFO));
	349	fifo_init(fifo_mail);
	350	}
[214]	351	status = push_list (fifo_mail, p, severity, alias);
	352	SH_MUTEX_UNLOCK(mutex_fifo_mail);
[1]	353
	354	if (status >= 0)
	355	++sh.mailNum.alarm_last;
	356
	357	SH_FREE(p);
	358
	359	if (sh.mailNum.alarm_last >= sh.mailNum.alarm_interval)
	360	{
[214]	361	BREAKEXIT(sh_nmail_flush);
	362	retval = sh_nmail_flush ();
[1]	363	}
	364
	365	if (status == SH_FIFO_MAX)
	366	retval = -2;
	367	SL_RETURN(retval, (_("sh_mail_pushstack")));
	368	}
	369
	370
	371	/* The mailer.
	372	*/
[131]	373	static int sh_mail_end_conn (FILE * connfile, int fd);
[214]	374	static FILE * sh_mail_start_conn (struct alias * address, int * fd, int * anum);
[1]	375
	376	static
[214]	377	void sh_mail_get_subject(const char * message,
[1]	378	char * mheader, size_t len)
	379	{
	380	st_format rep_serv_tab[] = {
	381	{ 'T', S_FMT_TIME, 0, 0, NULL},
	382	{ 'H', S_FMT_STRING, 0, 0, NULL},
	383	{ 'M', S_FMT_STRING, 0, 0, NULL},
	384	{ 'S', S_FMT_STRING, 0, 0, NULL},
	385	{'\0', S_FMT_ULONG, 0, 0, NULL},
	386	};
	387
	388	char * p;
	389	char * mptr;
	390	char sev[8];
[214]	391	char * msg;
[1]	392
	393	SL_ENTER(_("sh_mail_get_subject"));
	394
	395	(void) sl_strlcpy(mheader, _("Subject: "), len);
	396	if (NULL == strchr(mail_subject, '%'))
	397	{
	398	(void) sl_strlcat(mheader, mail_subject, len);
	399	SL_RET0(_("sh_mail_get_subject"));
	400	}
	401
	402
	403	rep_serv_tab[0].data_ulong = (unsigned long) time(NULL);
	404	rep_serv_tab[1].data_str = sh.host.name;
	405
	406	/* fast forward to the important part
	407	*/
[214]	408	msg = sh_util_strdup(message);
	409
	410	mptr = sl_strstr(msg, _("msg="));
[1]	411	if (mptr)
	412	{
	413	mptr += 4;
	414	rep_serv_tab[2].data_str = mptr;
	415	}
	416	else
[214]	417	rep_serv_tab[2].data_str = msg;
[1]	418
[214]	419	mptr = sl_strstr(msg, _("sev="));
[1]	420	if (mptr)
	421	{
	422	mptr += 5;
	423	sev[0] = *mptr; ++mptr;
	424	sev[1] = *mptr; ++mptr;
	425	sev[2] = *mptr; ++mptr;
	426	sev[3] = *mptr; ++mptr;
	427	sev[4] = '\0';
	428	}
	429	else
	430	{
[214]	431	mptr = msg;
[1]	432	sev[0] = *mptr; ++mptr;
	433	sev[1] = *mptr; ++mptr;
	434	sev[2] = *mptr; ++mptr;
	435	sev[3] = *mptr; ++mptr;
	436	if (*mptr == ' ') {
	437	sev[4] = '\0';
	438	} else {
	439	sev[4] = *mptr; ++mptr;
	440	if (*mptr == ' ') {
	441	sev[5] = '\0';
	442	} else {
	443	sev[5] = *mptr;
	444	sev[6] = '\0';
	445	}
	446	}
	447	}
	448	rep_serv_tab[3].data_str = sev;
	449
	450
	451	p = sh_util_formatted(mail_subject, rep_serv_tab);
	452	(void) sl_strlcat(mheader, p, len);
	453	SH_FREE(p);
[214]	454	SH_FREE(msg);
[1]	455	SL_RET0(_("sh_mail_get_subject"));
	456	}
	457
[214]	458	void sh_mail_signature_block (sh_string * sigMsg, char * recipient,
	459	char * bufcompress)
[1]	460	{
[214]	461	time_t id_audit;
	462	char * theSig;
	463	char ibuf[80];
	464	unsigned int count;
[1]	465
[214]	466	/* ------ signature block ------------------------------------ */
	467
	468	sigMsg = sh_string_add_from_char(sigMsg,
	469	_("-----BEGIN SIGNATURE-----\r\n"));
	470
	471	count = sh_nmail_get_mailkey (recipient, skey->mailkey_new, KEY_LEN+1,
	472	&id_audit);
	473
	474	if (count != 0)
[34]	475	{
[214]	476	char sigbuf[KEYBUF_SIZE];
	477
	478	/* Sign the message with the signature key.
	479	*/
	480	theSig = sh_util_siggen (skey->mailkey_new,
	481	bufcompress, sl_strlen(bufcompress),
	482	sigbuf, sizeof(sigbuf));
	483	sigMsg = sh_string_add_from_char(sigMsg, theSig);
	484	}
	485	else
	486	{
	487	/* reveal first signature key
	488	*/
	489	/* flawfinder: ignore */
	490	(void) sl_strlcpy(skey->crypt, skey->mailkey_new, KEY_LEN+1);
	491
	492	BREAKEXIT(sh_util_encode);
	493	/* flawfinder: ignore */
	494	sh_util_encode(skey->crypt, bufcompress, 0, 'A');
	495
	496	/* flawfinder: ignore */
	497	sigMsg = sh_string_add_from_char(sigMsg, skey->crypt);
	498
	499	/* flawfinder: ignore */
	500	memset (skey->crypt, 0, KEY_LEN);
	501	}
[1]	502
[214]	503	sigMsg = sh_string_add_from_char(sigMsg, "\r\n");
[1]	504
[214]	505	sl_snprintf(ibuf, sizeof(ibuf), _("%06u %010lu::%s\r\n"),
	506	count, (unsigned long) id_audit, sh.host.name);
[1]	507
[214]	508	sigMsg = sh_string_add_from_char(sigMsg, ibuf);
	509	sigMsg = sh_string_add_from_char(sigMsg, _("-----END MESSAGE-----"));
[34]	510
[214]	511	return;
[1]	512	}
	513
[214]	514	int sh_mail_msg (const char * message)
[1]	515	{
	516	char subject[32+32+SH_MINIBUF+2+3+SH_PATHBUF];
	517	char mheader[32+32+SH_MINIBUF+2+3];
	518
[214]	519	sh_string * mailMsg;
	520	sh_string * compMsg;
	521	int status = 0;
	522	volatile int errcount;
[1]	523	size_t wrlen;
[214]	524	volatile int retval = -1;
[1]	525
	526	char * bufcompress;
[214]	527	size_t compressed;
	528
[1]	529	static int failcount = 0;
	530	FILE * connfile = NULL;
	531
	532	struct sigaction old_act;
	533	struct sigaction new_act;
	534
	535	static time_t fail_time = 0;
	536	static time_t success_time = 0;
	537
[131]	538	int ma_socket = -1;
	539
[214]	540	int address_num = 0;
	541	sh_string * theMsg = NULL;
[1]	542
	543	/* #define SH_MAILBUF (256) */
[214]	544	#define SH_MAILBUF 4096
[1]	545
[132]	546	char timebuf[81];
[1]	547
	548	SL_ENTER(_("sh_mail_msg"));
	549
[214]	550	/*
	551	* Return if we cannot mail.
[1]	552	*/
	553	if (failedMail == SL_TRUE)
	554	SL_RETURN((-1), _("sh_mail_msg"));
	555
[214]	556	/*
	557	* Final failure, can't mail for SH_MAX_FAIL hours.
	558	*/
[1]	559	if ( (success_time > 0) && (fail_time > 0) &&
	560	(time(NULL) - success_time) > 3600*SH_MAX_FAIL)
	561	{
	562	sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_SRV_FAIL,
[214]	563	_("mail"),
	564	sh_string_str(all_recipients->recipient));
[1]	565	sh_mail_emptystack();
	566	sh.mailNum.alarm_last = 0;
	567	failedMail = SL_TRUE;
	568	SL_RETURN((-1), _("sh_mail_msg"));
	569	}
	570
[214]	571	/*
	572	* Try at most every three seconds to mail if there was a failure.
[1]	573	*/
	574	if ((fail_time > 0) && (time(NULL) - fail_time) < 3/600/)
	575	{
	576	if (failcount > 3)
	577	{
[214]	578	/* -- Save for later. Changed: done by caller. --
	579	* sh_nmail_pushstack (severity, message, alias);
[1]	580	*/
	581	++failcount;
	582
[275]	583	SL_RETURN((-2), _("sh_mail_msg"));
[1]	584	}
	585	else
	586	{
	587	(void) retry_msleep(2, 0);
	588	++failcount;
	589	}
	590	}
	591
	592	/* -- Reset time of last failure. --
	593	*/
	594	fail_time = 0;
	595
	596
[214]	597	/* --------- Build complete message. ------------------------ */
[1]	598
[214]	599	/* Don't flush the queue here, because tag_list doesn't know
	600	* how to filter messages. */
[1]	601
[214]	602	theMsg = sh_string_new_from_lchar(message, strlen(message));
[1]	603
	604	/* ---------- Header ---------------------------------------- */
	605
	606	if (mail_subject == NULL)
	607	{
	608	(void) sl_strlcpy(mheader, _("Subject: "), sizeof(mheader)-5);
[214]	609	(void) sl_strlcat(mheader,
	610	sh_unix_time (0, timebuf, sizeof(timebuf)),
[132]	611	sizeof(mheader)-5);
[1]	612	(void) sl_strlcat(mheader, " ", sizeof(mheader)-5);
	613	(void) sl_strlcat(mheader, sh.host.name, sizeof(mheader)-5);
	614	}
	615	else
	616	{
	617
	618	if (message)
	619	{
	620	sh_mail_get_subject(message, mheader, sizeof(mheader)-5);
	621	}
	622	else
	623	{
	624	(void) sl_strlcpy(mheader, _("Subject: "), sizeof(mheader)-5);
[214]	625	(void) sl_strlcat(mheader,
	626	sh_unix_time (0, timebuf, sizeof(timebuf)),
[132]	627	sizeof(mheader)-5);
[1]	628	(void) sl_strlcat(mheader, " ", sizeof(mheader)-5);
	629	(void) sl_strlcat(mheader, sh.host.name, sizeof(mheader)-5);
	630	}
	631	}
	632
	633	/* RFC 821: Header is terminated by an empty line
	634	*/
	635	(void) sl_strlcat(mheader, "\015\012\015\012", sizeof(mheader));
	636
	637	/* ---------- Message --------------------------------------- */
	638
[132]	639	(void) sl_strlcpy(subject, sh_unix_time (0, timebuf, sizeof(timebuf)),
	640	sizeof(subject));
[1]	641	(void) sl_strlcat(subject, " ", sizeof(subject));
	642	(void) sl_strlcat(subject, sh.host.name, sizeof(subject));
	643	(void) sl_strlcat(subject, "\r\n", sizeof(subject));
	644
	645
[214]	646	mailMsg = sh_string_new (SH_MAILBUF);
	647	compMsg = sh_string_new (SH_MAILBUF);
[1]	648
[214]	649	mailMsg = sh_string_add_from_char(mailMsg, mheader);
	650	mailMsg = sh_string_add_from_char(mailMsg,
	651	_("-----BEGIN MESSAGE-----\r\n"));
[1]	652
[214]	653	mailMsg = sh_string_add_from_char(mailMsg, subject);
	654	mailMsg = sh_string_add (mailMsg, theMsg);
	655	mailMsg = sh_string_add_from_char(mailMsg, "\r\n");
[1]	656
[214]	657	/* ---------- Compressed Message ---------------------------- */
[1]	658
[214]	659	compMsg = sh_string_add_from_char(compMsg, subject);
	660	compMsg = sh_string_add (compMsg, theMsg);
	661	compMsg = sh_string_add_from_char(compMsg, "\r\n");
[1]	662
[214]	663	bufcompress = SH_ALLOC(sh_string_len(compMsg) + KEY_LEN + 1);
	664	bufcompress[0] = '\0';
[1]	665
[214]	666	compressed = sh_util_compress (bufcompress,
	667	sh_string_str(compMsg),
	668	sh_string_len(compMsg) + 1);
[1]	669
	670	/* ---------- Connect ---------------------------------------- */
	671
	672	/* -- Catch (ignore) 'broken pipe'.
	673	*/
	674	new_act.sa_handler = SIG_IGN;
	675	sigemptyset( &new_act.sa_mask ); /* set an empty mask */
	676	new_act.sa_flags = 0; /* init sa_flags */
	677
	678	(void) sigaction (SIGPIPE, &new_act, &old_act);
	679
	680	errcount = 0;
	681
[214]	682	if (sh_mail_all_in_one == S_FALSE)
[1]	683	{
[214]	684	struct alias * address_list;
	685
	686	address_list = all_recipients;
	687
	688	while (address_list)
[1]	689	{
[214]	690	if (address_list->send_mail == 1)
	691	{
	692	connfile = sh_mail_start_conn (address_list,
	693	&ma_socket, &address_num);
[1]	694
[214]	695	if (NULL != connfile)
	696	{
	697	wrlen = fwrite (sh_string_str(mailMsg), 1,
	698	sh_string_len(mailMsg), connfile);
	699	wrlen -= sh_string_len(mailMsg);
	700
	701	if (wrlen == 0)
	702	{
	703	sh_string * sigMsg = sh_string_new (0);
	704
	705	sh_mail_signature_block (sigMsg,
	706	sh_string_str(address_list->recipient),
	707	bufcompress);
	708
	709	wrlen = fwrite (sh_string_str(sigMsg), 1,
	710	sh_string_len(sigMsg), connfile);
	711	wrlen -= sh_string_len(sigMsg);
	712
	713	sh_string_destroy(&sigMsg);
	714	}
	715
	716	if (wrlen == 0)
	717	status = sh_mail_end_conn (connfile, ma_socket);
	718	else
	719	status = -1;
	720	}
	721	if (NULL == connfile \|\| status != 0)
	722	{
	723	sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_SRV_FAIL,
	724	_("mail"),
	725	sh_string_str(address_list->recipient));
	726	++errcount;
	727	++sh.statistics.mail_failed;
	728	}
[1]	729	else
[214]	730	{
	731	++sh.statistics.mail_success;
	732	}
	733
	734	if (connfile != NULL)
	735	{
[252]	736	(void) sl_fclose (FIL__, __LINE__, connfile);
[214]	737	connfile = NULL;
	738	}
[1]	739	}
[214]	740	address_list = address_list->all_next;
[1]	741	}
	742	}
	743	else
	744	{
[214]	745	connfile = sh_mail_start_conn (NULL, &ma_socket, &address_num);
	746
[1]	747	if (NULL != connfile)
	748	{
[214]	749	wrlen = fwrite (sh_string_str(mailMsg), 1,
	750	sh_string_len(mailMsg), connfile);
	751	wrlen -= sh_string_len(mailMsg);
	752
[1]	753	if (wrlen == 0)
[214]	754	{
	755	sh_string * sigMsg = sh_string_new (0);
	756
	757	sh_mail_signature_block (sigMsg,
	758	NULL,
	759	bufcompress);
	760
	761	wrlen = fwrite (sh_string_str(sigMsg), 1,
	762	sh_string_len(sigMsg), connfile);
	763	wrlen -= sh_string_len(sigMsg);
	764
	765	sh_string_destroy(&sigMsg);
	766	}
	767
	768	if (wrlen == 0)
[131]	769	status = sh_mail_end_conn (connfile, ma_socket);
[1]	770	else
	771	status = -1;
	772	}
[214]	773
	774	if (NULL == connfile \|\| status != 0)
[1]	775	{
[214]	776	struct alias* ma_address = all_recipients;
	777
	778	while (ma_address)
	779	{
	780	if (ma_address->send_mail == 1)
	781	break;
	782	ma_address = ma_address->all_next;
	783	}
	784
[1]	785	sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_SRV_FAIL,
[214]	786	_("mail"), sh_string_str(ma_address->recipient));
[1]	787	errcount = address_num;
	788	++sh.statistics.mail_failed;
	789	}
	790	else
	791	{
	792	++sh.statistics.mail_success;
	793	}
	794
	795	if (connfile != NULL)
	796	{
[252]	797	(void) sl_fclose (FIL__, __LINE__, connfile);
[1]	798	connfile = NULL;
	799	}
	800	}
	801
[214]	802	memset (bufcompress, 0, compressed);
[1]	803	SH_FREE(bufcompress);
	804
[214]	805	memset (sh_string_str(mailMsg), 0, sh_string_len(mailMsg));
	806	memset (sh_string_str(compMsg), 0, sh_string_len(compMsg));
	807	memset (sh_string_str(theMsg), 0, sh_string_len(theMsg));
[1]	808
[214]	809	sh_string_destroy(&mailMsg);
	810	sh_string_destroy(&compMsg);
	811	sh_string_destroy(&theMsg);
	812
[1]	813	/* --- Stay responsible for delivery in case of failure --- */
	814
[214]	815	if (errcount == address_num)
[1]	816	{
[214]	817	rollback_list(fifo_mail);
[275]	818	retval = -3;
[1]	819	}
[214]	820	else
[1]	821	{
[214]	822	mark_list(fifo_mail);
[1]	823	}
	824
	825	/* --- Reset signal. ---
	826	*/
	827	(void) sigaction (SIGPIPE, &old_act, NULL);
	828
	829	if (errcount == address_num)
	830	{
	831	fail_time = time(NULL);
	832	SL_RETURN((retval), _("sh_mail_msg"));
	833	}
[214]	834
[1]	835	success_time = time(NULL);
	836	failcount = 0;
	837
	838	SL_RETURN((0), _("sh_mail_msg"));
	839	}
	840
	841
	842	/*
	843	*
	844	* SMTP CODE BELOW
	845	*
	846	*
	847	*/
	848
	849	#include <ctype.h>
	850	#ifdef HOST_IS_HPUX
	851	#define _XOPEN_SOURCE_EXTENDED
	852	#endif
	853	#include <netdb.h>
	854	#include <sys/types.h>
	855	#include <sys/socket.h>
	856	#include <netinet/in.h>
	857	#ifndef S_SPLINT_S
	858	#include <arpa/inet.h>
	859	#else
	860	#define AF_INET 2
	861	#endif
	862
	863	#define SH_NEED_GETHOSTBYXXX
	864	#include "sh_static.h"
	865
	866	/* missing on HP-UX 10.20 */
	867	#ifndef IPPORT_SMTP
	868	#define IPPORT_SMTP 25
	869	#endif
	870
[137]	871	static int sh_mail_wait(int code, int ma_socket);
[1]	872
	873	static char * relay_host = NULL;
	874
[22]	875	int sh_mail_set_relay (const char * str_s)
[1]	876	{
	877	SL_ENTER(_("sh_mail_set_relay"));
	878
	879	if (str_s == NULL)
	880	SL_RETURN( -1, _("sh_mail_set_relay"));
	881
	882	if (relay_host != NULL)
[34]	883	{
	884	SH_FREE (relay_host);
	885	relay_host = NULL;
	886	}
[1]	887
	888	if (0 == sl_strncmp(str_s, _("NULL"), 4))
	889	{
	890	SL_RETURN( 0, _("sh_mail_set_relay"));
	891	}
	892
[34]	893	relay_host = sh_util_strdup(str_s);
	894
[1]	895	SL_RETURN( 0, _("sh_mail_set_relay"));
	896	}
	897
	898	static char * mail_sender = NULL;
	899
[22]	900	int sh_mail_set_sender (const char *str)
[1]	901	{
	902	if (mail_sender != NULL)
	903	{
	904	SH_FREE (mail_sender);
	905	mail_sender = NULL;
	906	}
	907	if (str != NULL)
	908	{
	909	mail_sender = sh_util_strdup (str);
	910	}
	911	if (mail_sender == NULL)
	912	{
	913	return -1;
	914	}
	915	return 0;
	916	}
	917
[216]	918	static int sh_mail_port = IPPORT_SMTP;
[1]	919
[216]	920	int sh_mail_set_port (const char * str)
	921	{
	922	int i = atoi (str);
	923
	924	SL_ENTER(_("sh_mail_set_port"));
	925
	926	if (i >= 0 && i < 65535)
	927	{
	928	sh_mail_port = i;
	929	}
	930	else
	931	{
	932	sh_mail_port = IPPORT_SMTP;
	933	SL_RETURN ((-1), _("sh_mail_set_port"));
	934	}
	935
	936	SL_RETURN( (0), _("sh_mail_set_port"));
	937	}
	938
[1]	939	/*************************
	940	*
	941	* start connection
[214]	942	* for details on SMTP, see RFC 821
	943	*
	944	* If ma_address == NULL, will send to all marked with
	945	* send_mail=1 in recipient list, else to ma_address.
[1]	946	*/
	947
	948	static time_t time_wait = 300;
[272]	949	static void report_smtp (char * reply);
[1]	950
[214]	951	static FILE * sh_mail_start_conn (struct alias * ma_address,
	952	int * ma_socket, int * anum)
[1]	953	{
	954	char * address;
[214]	955	int aFlag = 0;
[1]	956
	957	int ecount;
	958
	959	char this_address[256];
	960	char ma_machine[256];
	961	char ma_user[256];
	962	char error_msg[256];
	963	char error_call[SH_MINIBUF];
	964	int error_num = 0;
	965	register int i, j, k;
	966	FILE * connFile = NULL;
	967	struct tm * my_tm;
[131]	968	#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
	969	struct tm time_tm;
	970	#endif
[1]	971	time_t my_time;
	972	char my_tbuf[128];
	973
	974	int fd;
	975
	976	dnsrep * answers;
	977	mx * result;
	978
	979	SL_ENTER(_("sh_mail_start_conn"));
	980
[131]	981	*ma_socket = -1;
	982	time_wait = 300;
[1]	983
[214]	984	if (ma_address == NULL)
	985	{
	986	aFlag = 1;
	987	ma_address = all_recipients;
[1]	988
[214]	989	while (ma_address)
	990	{
	991	if (ma_address->send_mail == 1)
	992	break;
	993	ma_address = ma_address->all_next;
	994	}
	995	}
[1]	996
[214]	997	if (!ma_address)
[1]	998	{
	999	SL_RETURN( NULL, _("sh_mail_start_conn"));
	1000	}
[214]	1001
	1002	address = sh_string_str(ma_address->recipient);
	1003
	1004	TPT(( 0, FIL__, __LINE__, _("msg=<address %s>\n"),
	1005	address));
	1006
	1007	/* ------- split adress ------------------ */
	1008
[1]	1009	if (strchr (address, '@') == NULL) {
	1010	(void) sl_strlcpy(ma_user, address, 256);
	1011	(void) sl_strlcpy(ma_machine, _("localhost"), 256);
	1012	} else {
	1013	i = 0;
	1014	while (i < 255 && address[i] != '@') {
	1015	ma_user[i] = address[i];
	1016	++i;
	1017	}
[214]	1018
[1]	1019	/* adress[i] = '@'
	1020	*/
	1021	ma_user[i] = '\0';
	1022	j = i + 1; k = i; i = 0;
	1023	while (i < 255 && address[i+j] != '\0') {
	1024	ma_machine[i] = address[i+j];
	1025	++i;
	1026	}
	1027	ma_machine[i] = '\0';
	1028	if (address[k] != '@' \|\| address[k+i+1] != '\0')
	1029	{
	1030	SL_RETURN( NULL, _("sh_mail_start_conn"));
	1031	}
	1032	}
	1033
	1034
	1035	if (relay_host != NULL)
	1036	{
	1037	(void) sl_strlcpy (ma_machine, relay_host, sizeof(ma_machine));
	1038	TPT((0, FIL__, __LINE__, _("msg=<user %s machine %s>\n"),
	1039	ma_user, ma_machine));
[216]	1040	fd = connect_port (ma_machine, sh_mail_port,
[1]	1041	error_call, &error_num, error_msg, 256);
	1042	}
	1043	else
	1044	{
[214]	1045	answers = ma_address->mx_list;
	1046	if (!answers)
	1047	{
	1048	answers = return_mx (ma_machine);
	1049	ma_address->mx_list = answers;
	1050	}
	1051
[1]	1052	if (answers)
	1053	{
	1054	result = answers->reply;
	1055	fd = -1;
	1056	for (i = 0; i < answers->count; ++i)
	1057	{
	1058	(void) sl_strlcpy(ma_machine, result[i].address,
	1059	sizeof(ma_machine));
	1060	TPT((0, FIL__, __LINE__,
	1061	_("msg=<user %s mx %s pref %d>\n"),
	1062	ma_user, ma_machine, result[i].pref));
[216]	1063	fd = connect_port (ma_machine, sh_mail_port,
[1]	1064	error_call, &error_num, error_msg, 256);
	1065	if (fd >= 0)
	1066	break;
	1067	}
	1068	}
	1069	else
	1070	{
	1071	(void) sl_strlcpy(error_call, _("return_mx"), SH_MINIBUF);
	1072	(void) sl_strlcpy(error_msg, _("The specified host is unknown: "),
	1073	256);
	1074	(void) sl_strlcat(error_msg, ma_machine, 256);
	1075	fd = -1;
	1076	}
	1077	}
	1078
	1079
	1080	if (fd < 0)
	1081	{
	1082	sh_error_handle ((-1), FIL__, __LINE__, error_num,
	1083	MSG_E_NET, error_msg, error_call,
	1084	_("email"), ma_machine);
	1085	SL_RETURN( NULL, _("sh_mail_start_conn"));
	1086	}
	1087
	1088	/* associate a FILE structure with it
	1089	*/
	1090	connFile = fdopen (fd, "r+");
	1091	if (connFile == NULL)
	1092	{
	1093	TPT(( 0, FIL__, __LINE__, _("msg=<fdopen() failed>\n")));
[252]	1094	(void) sl_close_fd(FIL__, __LINE__, fd);
[1]	1095	SL_RETURN( NULL, _("sh_mail_start_conn"));
	1096	}
	1097
	1098
	1099	/* say HELO to the other socket
	1100	*/
[131]	1101	if (0 == sh_mail_wait (220, fd))
[1]	1102	{
	1103	sh_error_handle((-1), FIL__, __LINE__, 0, MSG_E_NET,
	1104	_("Timeout on SMTP session init"),
	1105	_("sh_mail_start_conn"),
	1106	_("mail"), sh.host.name);
	1107	TPT(( 0, FIL__, __LINE__, _("msg=<Timeout>\n")));
[252]	1108	(void) sl_fclose(FIL__, __LINE__, connFile);
[1]	1109	SL_RETURN( NULL, _("sh_mail_start_conn"));
	1110	}
	1111
	1112	(void) fflush(connFile);
	1113
	1114	if (0 != is_numeric(sh.host.name))
	1115	{
[272]	1116	sl_snprintf(error_msg, sizeof(error_msg), "HELO [%s]",
	1117	sh.host.name);
[1]	1118	}
	1119	else
	1120	{
[272]	1121	sl_snprintf(error_msg, sizeof(error_msg), "HELO %s",
	1122	sh.host.name);
[1]	1123	}
[272]	1124	report_smtp(error_msg);
	1125
[1]	1126	if (0 != is_numeric(sh.host.name))
	1127	fprintf(connFile, _("HELO [%s]%c%c"), sh.host.name, 13, 10);
	1128	else
	1129	fprintf(connFile, _("HELO %s%c%c"), sh.host.name, 13, 10);
	1130
	1131	(void) fflush(connFile);
	1132
[131]	1133	if (0 == sh_mail_wait(250, fd))
[1]	1134	{
	1135	sh_error_handle((-1), FIL__, __LINE__, 0, MSG_E_NET,
	1136	_("HELO failed"), _("sh_mail_start_conn"),
	1137	_("mail"), sh.host.name);
	1138
	1139	TPT(( 0, FIL__, __LINE__, _("msg=<Timeout.>\n")));
[252]	1140	(void) sl_fclose(FIL__, __LINE__, connFile);
[1]	1141	SL_RETURN( NULL, _("sh_mail_start_conn"));
	1142	}
	1143
	1144	/* tell them who we are
	1145	*/
	1146	(void) sl_strlcpy (this_address,
	1147	mail_sender ? mail_sender : DEFAULT_SENDER, 256);
	1148	if (NULL == strchr(this_address, '@'))
	1149	{
	1150	(void) sl_strlcat (this_address, "@", 256);
	1151	if (0 != is_numeric(sh.host.name))
	1152	(void) sl_strlcat (this_address, _("example.com"), 256);
	1153	else
	1154	(void) sl_strlcat (this_address, sh.host.name, 256);
	1155	}
	1156
[272]	1157	sl_snprintf(error_msg, sizeof(error_msg), "MAIL FROM:<%s>",
	1158	this_address);
	1159	report_smtp(error_msg);
[1]	1160
	1161	(void) fflush(connFile);
	1162	/@-usedef@/
	1163	fprintf(connFile, _("MAIL FROM:<%s>%c%c"), this_address, 13, 10);
	1164	/@+usedef@/
	1165	(void) fflush(connFile);
	1166
[131]	1167	if (0 == sh_mail_wait(250, fd))
[1]	1168	{
	1169	sh_error_handle((-1), FIL__, __LINE__, 0, MSG_E_NET,
	1170	_("MAIL FROM failed"), _("sh_mail_start_conn"),
	1171	_("mail"), this_address);
	1172	TPT(( 0, FIL__, __LINE__, _("msg=<Timeout.>\n")));
[252]	1173	(void) sl_fclose(FIL__, __LINE__, connFile);
[1]	1174	SL_RETURN( NULL, _("sh_mail_start_conn"));
	1175	}
	1176
	1177	/* tell them who to send mail to
	1178	*/
[214]	1179	if (aFlag == 0)
[1]	1180	{
[272]	1181	sl_snprintf(error_msg, sizeof(error_msg), "RCPT TO:<%s>",
	1182	address);
	1183	report_smtp(error_msg);
[1]	1184
	1185	(void) fflush(connFile);
	1186	fprintf(connFile, _("RCPT TO:<%s>%c%c"), address, 13, 10);
	1187	(void) fflush(connFile);
	1188
[131]	1189	if (0 == sh_mail_wait(250, fd))
[1]	1190	{
	1191	sh_error_handle((-1), FIL__, __LINE__, 0, MSG_E_NET,
	1192	_("RCPT TO failed"), _("sh_mail_start_conn"),
	1193	_("mail"), address);
	1194	TPT(( 0, FIL__, __LINE__, _("msg=<Timeout.>\n")));
[252]	1195	(void) sl_fclose(FIL__, __LINE__, connFile);
[1]	1196	SL_RETURN( NULL, _("sh_mail_start_conn"));
	1197	}
[214]	1198	*anum = 1;
[1]	1199	}
	1200	else
	1201	{
[214]	1202	int address_num = 0;
	1203	ecount = 0;
	1204
	1205	ma_address = all_recipients;
	1206
	1207	while (ma_address)
[1]	1208	{
[214]	1209	if (ma_address->send_mail != 1)
	1210	{
	1211	ma_address = ma_address->next;
	1212	continue;
	1213	}
	1214
	1215	++address_num;
	1216
[272]	1217	sl_snprintf(error_msg, sizeof(error_msg), "RCPT TO:<%s>",
	1218	sh_string_str(ma_address->recipient));
	1219	report_smtp(error_msg);
[1]	1220
	1221	(void) fflush(connFile);
[214]	1222	fprintf(connFile, _("RCPT TO:<%s>%c%c"),
	1223	sh_string_str(ma_address->recipient), 13, 10);
[1]	1224	(void) fflush(connFile);
	1225
[131]	1226	if (0 == sh_mail_wait(250, fd))
[1]	1227	{
	1228	sh_error_handle((-1), FIL__, __LINE__, 0, MSG_E_NET,
	1229	_("RCPT TO failed"), _("sh_mail_start_conn"),
[214]	1230	_("mail"), sh_string_str(ma_address->recipient));
[1]	1231
	1232	TPT(( 0, FIL__, __LINE__, _("msg=<Timeout.>\n")));
	1233	++ecount;
	1234	}
[214]	1235	ma_address = ma_address->next;
[1]	1236	}
[214]	1237
	1238	*anum += address_num;
	1239
[1]	1240	if (ecount == address_num)
	1241	{
[252]	1242	(void) sl_fclose(FIL__, __LINE__, connFile);
[1]	1243	SL_RETURN( NULL, _("sh_mail_start_conn"));
	1244	}
	1245	}
	1246
	1247	/* Send the message
	1248	*/
[272]	1249	report_smtp(_("DATA"));
[1]	1250
	1251	(void) fflush(connFile);
	1252	fprintf(connFile, _("DATA%c%c"), 13, 10);
	1253	(void) fflush(connFile);
	1254
[131]	1255	if (0 == sh_mail_wait(354, fd))
[1]	1256	{
	1257	sh_error_handle((-1), FIL__, __LINE__, 0, MSG_E_NET,
	1258	_("DATA failed"), _("sh_mail_start_conn"),
	1259	_("mail"), address);
	1260	TPT(( 0, FIL__, __LINE__, _("msg=<Timeout.>\n")));
[252]	1261	(void) sl_fclose(FIL__, __LINE__, connFile);
[1]	1262	SL_RETURN( NULL, _("sh_mail_start_conn"));
	1263	}
	1264
	1265
	1266	my_time = time(NULL);
[131]	1267	#if defined(HAVE_PTHREAD) && defined (_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_LOCALTIME_R)
	1268	my_tm = localtime_r(&my_time, &time_tm);
	1269	#else
[1]	1270	my_tm = localtime(&my_time);
[131]	1271	#endif
[238]	1272
	1273	#if defined(HAVE_STRFTIME_Z)
	1274	(void) strftime(my_tbuf, 127, _("%a, %d %b %Y %H:%M:%S %z"), my_tm);
	1275	#else
[1]	1276	(void) strftime(my_tbuf, 127, _("%a, %d %b %Y %H:%M:%S %Z"), my_tm);
[238]	1277	#endif
[1]	1278
	1279	TPT(( 0, FIL__, __LINE__, _("msg=<From: <%s>%c%cTo: <%s>%c%cDate: %s>%c%c"),
	1280	this_address, 13, 10, address, 13, 10, my_tbuf, 13, 10));
	1281
[272]	1282	report_smtp(_("sending data.."));
	1283
[1]	1284	(void) fflush(connFile);
	1285	fprintf(connFile,
	1286	_("From: <%s>%c%c"\
	1287	"To: <%s>%c%c"\
	1288	"Date: %s%c%c"),
	1289	this_address, 13, 10,
	1290	address, 13, 10,
	1291	my_tbuf, 13, 10);
	1292
[131]	1293	*ma_socket = fd;
[1]	1294	SL_RETURN( connFile, _("sh_mail_start_conn"));
	1295	}
	1296
	1297	/*************************
	1298	*
	1299	* end connection
	1300	*
	1301	*/
	1302
[131]	1303	static int sh_mail_end_conn (FILE * connFile, int fd)
[1]	1304	{
	1305	SL_ENTER(_("sh_mail_end_conn"));
	1306
	1307	time_wait = 300;
	1308
[272]	1309	report_smtp(_("."));
	1310
[1]	1311	(void) fflush(connFile);
	1312	fprintf(connFile, _("%c%c.%c%c"), 13, 10, 13, 10);
	1313	(void) fflush(connFile);
	1314
[131]	1315	if (0 != sh_mail_wait(250, fd))
[1]	1316	{
	1317	(void) fflush(connFile);
	1318	fprintf(connFile, _("QUIT%c%c"), 13, 10);
	1319	(void) fflush(connFile);
	1320	TPT(( 0, FIL__, __LINE__, _("msg=<exit>\n")));
	1321
	1322	SL_RETURN (0, _("sh_mail_end_conn"));
	1323	}
	1324
	1325	sh_error_handle((-1), FIL__, __LINE__, 0, MSG_E_NET,
	1326	_("QUIT failed"), _("sh_mail_end_conn"),
	1327	_("mail"), _("SMTP server"));
	1328
	1329	TPT(( 0, FIL__, __LINE__, _("msg=<abnormal exit>\n")));
	1330
	1331	SL_RETURN ((-1), _("sh_mail_end_conn"));
	1332	}
	1333
	1334
	1335
	1336	/****************************
	1337	*
	1338	* Handle server replies
	1339	*
	1340	*
	1341	*/
[272]	1342	extern int flag_err_debug;
[1]	1343
[272]	1344	static void report_smtp (char * reply)
	1345	{
	1346	char * tmp;
	1347
	1348	if (flag_err_debug == SL_TRUE)
	1349	{
	1350	tmp = sh_util_safe_name_keepspace(reply);
	1351
	1352	sh_error_handle (SH_ERR_ALL, FIL__, __LINE__, 0, MSG_E_SUBGEN,
	1353	tmp,
	1354	_("report_smtp") );
	1355	SH_FREE(tmp);
	1356	}
	1357	return;
	1358	}
	1359
	1360
[131]	1361	static int sh_mail_wait(int code, int ma_socket)
[1]	1362	{
[131]	1363	int rcode, g;
[1]	1364
[131]	1365	char c;
[1]	1366
[272]	1367	char errmsg[194];
	1368	char reply[128];
	1369	unsigned int ireply = 0;
[1]	1370
	1371	enum {
	1372	WAIT_CODE_START,
	1373	WAIT_CODE,
	1374	WAIT_NL,
	1375	WAIT_NL_CONT
	1376	} state;
	1377
	1378	time_t waited_time;
	1379
	1380	SL_ENTER(_("mail_wait"));
	1381
	1382	waited_time = time(NULL);
	1383
	1384	/* timeout after 5 minutes
	1385	*/
	1386
[272]	1387	rcode = 0;
	1388	state = WAIT_CODE_START;
	1389	reply[0] = '\0';
[1]	1390
[131]	1391	while (sl_read_timeout_fd (ma_socket, &c, 1, time_wait, SL_FALSE) > 0) {
[1]	1392
[272]	1393	if (ireply < (sizeof(reply) - 1))
	1394	{
	1395	if (c != '\n' && c != '\r')
	1396	{
	1397	reply[ireply] = c;
	1398	++ireply;
	1399	reply[ireply] = '\0';
	1400	}
	1401	}
	1402
[131]	1403	g = (int) c;
	1404
[137]	1405	/*
	1406	if (g == EOF)
[1]	1407	{
	1408	TPT((0, FIL__, __LINE__, _("msg=<mail_wait: EOF>\n")));
	1409	SL_RETURN( 0, _("mail_wait"));
	1410	}
[137]	1411	*/
[1]	1412
	1413	switch(state) {
	1414
	1415	/* wait for start of a numerical code
	1416	*/
	1417	case WAIT_CODE_START:
	1418	if (0 != isspace(g))
	1419	break; /* Skip white space */
[272]	1420	if (0 == isdigit(g))
	1421	{
	1422	report_smtp(reply);
	1423	SL_RETURN( 0, _("mail_wait")); /* No leading number */
	1424	}
[1]	1425	rcode = g-(int)'0'; /* convert to number */
	1426	state = WAIT_CODE;
	1427	break;
	1428
	1429	/* wait for completion of numerical code
	1430	*/
	1431	case WAIT_CODE:
	1432	if (0 != isdigit(g)) {
	1433	rcode = rcode * 10 + (g-(int)'0'); /* next digit */
	1434	break;
	1435	}
	1436	/@+charintliteral@/
	1437	state = ((g == '-') ? WAIT_NL_CONT : WAIT_NL);
	1438	/@-charintliteral@/
	1439	break;
	1440
	1441	/* wait for newline, then return with status code
	1442	*/
	1443	case WAIT_NL:
	1444	/@+charintliteral@/
	1445	if (g != '\n')
	1446	break;
	1447	/@-charintliteral@/
	1448
	1449	TPT((0, FIL__, __LINE__,
	1450	_("msg=<mail_wait: OK got %d (%d) need %d (%d)>\n"),
	1451	rcode, (int)(rcode/100), code, (int)(code/100) ));
	1452	g = ((int)(rcode/100) == (int)(code/100)) ? 1 : 0;
	1453	if (g != 1)
	1454	{
[272]	1455	char * tmp = sh_util_safe_name_keepspace(reply);
[22]	1456	sl_snprintf(errmsg, sizeof(errmsg),
[272]	1457	_("Bad response (%s), expected %d"), tmp, code);
	1458	SH_FREE(tmp);
[22]	1459
[1]	1460	sh_error_handle((-1), FIL__, __LINE__, 0, MSG_E_NET,
	1461	errmsg, _("sh_mail_wait"),
	1462	_("mail"), _("SMTP server"));
	1463	}
[272]	1464	else
	1465	{
	1466	report_smtp(reply);
	1467	}
[1]	1468	waited_time = time(NULL) - waited_time;
	1469	time_wait -= waited_time;
	1470	TPT((0, FIL__, __LINE__,
	1471	_("msg=<mail_wait: time_wait reduced to %d sec>\n"),
	1472	(int) time_wait));
	1473	SL_RETURN( (g), _("mail_wait")) ;
	1474
	1475	/* wait for continuation line
	1476	*/
	1477	/@fallthrough@//* no, but splint doesn't understand */
	1478	case WAIT_NL_CONT:
	1479	/@+charintliteral@/
	1480	if (g == '\n')
	1481	state = WAIT_CODE_START; /* There is a continuation line */
	1482	/@-charintliteral@/
	1483	break;
	1484
	1485	default:
	1486
	1487	TPT((0, FIL__, __LINE__, _("msg=<mail_wait: bad>\n")));
[272]	1488	report_smtp(reply);
[1]	1489	SL_RETURN( 0, _("mail_wait"));
	1490
	1491	}
	1492	}
	1493
	1494	TPT((0, FIL__, __LINE__, _("msg=<mail_wait: failed>\n")));
	1495
	1496	/* Failed, EOF or error on socket */
[272]	1497	report_smtp(reply);
[1]	1498	SL_RETURN( 0, _("mail_wait"));
	1499	}
	1500
	1501	/* -- function to insert "\r\n" after each 998 chars --
	1502	*/
	1503
	1504	#define SPLIT_AT 998
	1505
[214]	1506	static char * split_string(const char * str)
[1]	1507	{
	1508	size_t size;
	1509	size_t blocks;
	1510	int count = 0;
	1511
	1512	char * p, * p0;
[214]	1513	const char * q;
[1]	1514
	1515	if (!str)
	1516	return NULL;
	1517
[34]	1518	size = strlen(str) + 1;
[1]	1519	blocks = 1 + (size / SPLIT_AT);
	1520
[34]	1521	if (sl_ok_muls(2, blocks) && sl_ok_adds(size, (2*blocks)))
	1522	{
	1523	size = size + (2*blocks);
	1524	}
	1525	else
	1526	{
	1527	/* integer overflow, do not split */
	1528	p = sh_util_strdup(str);
	1529	return p;
	1530	}
	1531
[1]	1532	p = SH_ALLOC(size);
	1533	memset(p, 0, size);
[34]	1534
[1]	1535	p0 = p;
	1536
	1537	q = str;
	1538	while (*q != '\0') {
	1539	p = q;
	1540	++p;
	1541	++q;
	1542	++count;
	1543	if (0 == (count % SPLIT_AT)) {
	1544	count = 0;
	1545	*p = '\r';
	1546	++p;
	1547	*p = '\n';
	1548	++p;
	1549	}
	1550	}
	1551	/* fprintf(stderr, "used = %d\n", strlen(p0)); */
	1552
	1553	return p0;
	1554	}
	1555
	1556
	1557
	1558	/*****************************************************************
	1559	*
	1560	* MX Resolver Routines
	1561	*
	1562	*****************************************************************/
	1563
	1564	#if defined(HAVE_ARPA_NAMESER_H)
	1565
	1566	#include <netinet/in.h>
	1567	#ifdef __APPLE__
	1568	#define BIND_8_COMPAT 1
	1569	#endif
	1570	#ifndef S_SPLINT_S
	1571	#include <arpa/nameser.h>
	1572	#include <resolv.h>
	1573	#endif
	1574	#include <netdb.h>
	1575	#include <sys/socket.h>
	1576	#ifndef S_SPLINT_S
	1577	#include <arpa/inet.h>
	1578	#endif
	1579
	1580	#include "sh_tools.h"
	1581
	1582	#ifndef HFIXEDSZ
	1583	#define HFIXEDSZ 12
	1584	#endif
	1585	#ifndef QFIXEDSZ
	1586	#define QFIXEDSZ 4
	1587	#endif
	1588
	1589	/@unused@//* used in get_mx() which is not parsed by splint */
	1590	static unsigned int get_short (unsigned char * loc)
	1591	{
	1592	unsigned int retval = 0;
	1593	if (loc)
	1594	{
	1595	/* byte order: MSB first
	1596	*/
	1597	/@+charint@/
	1598	retval = (((unsigned char) * loc) * 256) \| ((unsigned char) * (loc + 1));
	1599	/@-charint@/
	1600	}
	1601	return (retval);
	1602	}
	1603
	1604	/* parser errors with splint */
	1605	#ifndef S_SPLINT_S
	1606	static dnsrep * get_mx (char *hostname)
	1607	{
	1608	int ret, length, status;
	1609	mx * result;
[22]	1610	size_t len;
[1]	1611
	1612	typedef union
	1613	{
	1614	HEADER head;
	1615	unsigned char buffer[4096];
	1616	} querybuf;
	1617
[171]	1618	querybuf * reply;
[1]	1619	char expanded[1024];
	1620	unsigned char * comp_dn, * eom;
	1621	HEADER * header;
[34]	1622	int type, rdlength, pref;
[170]	1623	unsigned int count, theindex;
[1]	1624	dnsrep * retval;
	1625
	1626	SL_ENTER(_("get_mx"));
	1627
	1628	if (0 != res_init ())
	1629	SL_RETURN (NULL, _("get_mx"));
	1630
[171]	1631	reply = SH_ALLOC(sizeof(querybuf));
	1632
[1]	1633	errno = 0;
	1634	length = res_query (hostname, C_IN, T_MX,
[171]	1635	(unsigned char *) reply, 4095);
[240]	1636
[1]	1637	if (length < 1)
	1638	{
[132]	1639	char errbuf[SH_ERRBUF_SIZE];
	1640
[1]	1641	/* error handling
	1642	*/
	1643	if (length == -1)
	1644	{
	1645	if (errno == ECONNREFUSED)
	1646	status = ECONNREFUSED;
	1647	else
	1648	status = h_errno;
	1649
	1650	#ifdef FIL__
	1651	sh_error_handle (SH_ERR_ALL, FIL__, __LINE__, status, MSG_E_SUBGEN,
	1652	(errno == ECONNREFUSED) ?
[132]	1653	sh_error_message (status, errbuf, sizeof(errbuf)) :
	1654	sh_tools_errmessage(status, errbuf, sizeof(errbuf)),
[1]	1655	_("res_query"));
	1656	#else
	1657	if (errno == ECONNREFUSED)
[132]	1658	fprintf(stderr, " ERROR: %s: \n", strerror(errno)); /* TESTONLY */
[1]	1659	else
[132]	1660	fprintf(stderr, "HERROR: %s\n", hstrerror(h_errno));/* TESTONLY */
[1]	1661	#endif
	1662	}
[171]	1663	SH_FREE(reply);
[1]	1664	SL_RETURN (NULL, _("get_mx"));
	1665	}
	1666
	1667	ret = 0;
[171]	1668	header = (HEADER *) reply;
[1]	1669
	1670	/* start of data section
	1671	*/
[171]	1672	comp_dn = (unsigned char *) reply + HFIXEDSZ;
[1]	1673
	1674	/* end-of-message
	1675	*/
[171]	1676	eom = (unsigned char *) reply + length;
[1]	1677
	1678	/* HEADER NAME -- must be skipped or decompressed
	1679	* TYPE -- type of data we got back, 16 bit integer
	1680	* CLASS -- class we got back, also a 16 bit integer
	1681	* TTL -- 32 bit time-to-live. just skip this
	1682	* RDLENGTH -- length of the data to follow
	1683	* RDATA -- the data:
	1684	* PREF -- 16 bit preference
	1685	* MX -- name of mail exchanger, must be decompressed
	1686	*/
	1687
	1688	/* Skip the query data.
	1689	* QDCOUNT is the number of entries (unsigned 16 bit int).
	1690	*/
	1691	count = ntohs (header->qdcount);
[170]	1692	for (theindex = 0; theindex < count; ++theindex)
[1]	1693	{
	1694	ret = dn_skipname (comp_dn, eom);
	1695	comp_dn += ret + QFIXEDSZ;
	1696	if (ret < 1 \|\| comp_dn >= eom)
[171]	1697	{
	1698	SH_FREE(reply);
	1699	SL_RETURN (NULL, _("get_mx"));
	1700	}
[1]	1701	}
[240]	1702
[1]	1703	count = ntohs (header->ancount);
	1704	if (count < 1)
[171]	1705	{
	1706	SH_FREE(reply);
	1707	SL_RETURN (NULL, _("get_mx"));
	1708	}
[1]	1709
	1710	retval = SH_ALLOC (sizeof (dnsrep));
	1711	if (!retval)
[171]	1712	{
	1713	SH_FREE(reply);
	1714	SL_RETURN (NULL, _("get_mx"));
	1715	}
	1716
[1]	1717	retval->count = count;
	1718
	1719	/* allocate space for the results */
	1720
[34]	1721	if (!sl_ok_muls(count, sizeof (mx)))
	1722	{
[171]	1723	SH_FREE(reply);
[34]	1724	SH_FREE (retval);
	1725	SL_RETURN (NULL, _("get_mx"));
	1726	}
	1727
[1]	1728	result = SH_ALLOC (count * sizeof (mx));
[34]	1729
[1]	1730	if (!result)
	1731	{
[171]	1732	SH_FREE(reply);
[1]	1733	SH_FREE (retval);
	1734	SL_RETURN (NULL, _("get_mx"));
	1735	}
	1736	retval->reply = result;
	1737
	1738	do
	1739	{
	1740	/* HEADER NAME
	1741	*/
[240]	1742	ret = dn_expand ((unsigned char *) reply, eom, comp_dn,
[1]	1743	(char *) expanded, 1023);
	1744	comp_dn += ret;
	1745	if (ret < 1 \|\| comp_dn >= eom)
	1746	{
[171]	1747	SH_FREE(reply);
[1]	1748	SH_FREE (result);
	1749	SH_FREE (retval);
	1750	SL_RETURN (NULL, _("get_mx"));
	1751	}
	1752
	1753	/* TYPE
	1754	*/
	1755	type = get_short (comp_dn);
	1756	comp_dn += 2;
	1757	if (type != T_MX \|\| comp_dn >= eom)
	1758	{
[171]	1759	SH_FREE(reply);
[1]	1760	SH_FREE (result);
	1761	SH_FREE (retval);
	1762	SL_RETURN (NULL, _("get_mx"));
	1763	}
	1764
[240]	1765
[1]	1766	/* CLASS (re-use 'type' var)
	1767	*/
	1768	type = get_short (comp_dn);
	1769	comp_dn += 2;
	1770	if (comp_dn >= eom)
	1771	{
[171]	1772	SH_FREE(reply);
[1]	1773	SH_FREE (result);
	1774	SH_FREE (retval);
	1775	SL_RETURN (NULL, _("get_mx"));
	1776	}
	1777
[240]	1778
[1]	1779	/* TTL
	1780	*/
	1781	comp_dn += 4;
	1782	if (comp_dn >= eom)
	1783	{
[171]	1784	SH_FREE(reply);
[1]	1785	SH_FREE (result);
	1786	SH_FREE (retval);
	1787	SL_RETURN (NULL, _("get_mx"));
	1788	}
	1789
	1790	/* RDLENGTH
	1791	*/
	1792	rdlength = get_short (comp_dn);
	1793	comp_dn += 2;
	1794	if (rdlength < 1 \|\| comp_dn >= eom)
	1795	{
[171]	1796	SH_FREE(reply);
[1]	1797	SH_FREE (result);
	1798	SH_FREE (retval);
	1799	SL_RETURN (NULL, _("get_mx"));
	1800	}
	1801
	1802	/* RDATA
	1803	*/
	1804	pref = get_short (comp_dn);
	1805	comp_dn += 2;
	1806	if (comp_dn >= eom)
	1807	{
[171]	1808	SH_FREE(reply);
[1]	1809	SH_FREE (result);
	1810	SH_FREE (retval);
	1811	SL_RETURN (NULL, _("get_mx"));
	1812	}
	1813
[240]	1814	ret = dn_expand ((unsigned char *) reply, eom, comp_dn,
[1]	1815	(char *) expanded, 1023);
	1816	comp_dn += ret;
	1817	if (ret < 1)
	1818	{
[171]	1819	SH_FREE(reply);
[1]	1820	SH_FREE (result);
	1821	SH_FREE (retval);
	1822	SL_RETURN (NULL, _("get_mx"));
	1823	}
	1824	count--;
	1825
	1826	/* fill in the struct
	1827	*/
	1828	result[count].pref = pref;
[22]	1829	len = strlen (expanded) + 1;
	1830	result[count].address = SH_ALLOC (len);
	1831	sl_strlcpy (result[count].address, expanded, len);
[1]	1832	}
	1833	while (ret > 0 && comp_dn < eom && count);
	1834
[171]	1835	SH_FREE(reply);
[1]	1836	SL_RETURN (retval, _("get_mx"));
	1837	}
	1838	/* ifndef S_SPLINT_S */
	1839	#endif
	1840
	1841	/* #if defined(HAVE_ARPA_NAMESER_H) */
	1842	#endif
	1843
	1844
	1845	static int comp_mx_pref (const void * a, const void * b)
	1846	{
	1847	const mx * ax = (const mx *) a;
	1848	const mx * bx = (const mx *) b;
	1849
	1850	if (ax->pref > bx->pref)
	1851	return 1;
	1852	else if (ax->pref < bx->pref)
	1853	return -1;
	1854	else
	1855	return 0;
	1856	}
	1857
	1858	/*
	1859	* return_mx returns a list of valid mail exchangers for domain
	1860	*/
	1861	static dnsrep * return_mx (char *domain)
	1862	{
[170]	1863	struct hostent *host;
[1]	1864	dnsrep * answers = NULL;
	1865	mx * result;
[170]	1866	dnsrep * retval;
[22]	1867	char errmsg[128];
	1868	size_t len;
[1]	1869
	1870	SL_ENTER(_("return_mx"));
	1871
	1872	#if defined(HAVE_ARPA_NAMESER_H)
	1873	if (domain != NULL)
	1874	answers = /@-unrecog@/get_mx (domain)/@+unrecog@/;
	1875	#endif
	1876
	1877	if (answers != NULL && answers->count > 0)
	1878	{
	1879	qsort(answers->reply, (size_t) answers->count, sizeof(mx),
	1880	comp_mx_pref);
	1881	SL_RETURN (answers, _("return_mx"));
	1882	}
	1883	else
	1884	{
	1885	if (domain != NULL)
	1886	{
	1887	#if defined(HAVE_ARPA_NAMESER_H)
	1888	#ifdef FIL__
	1889	(void) sl_strlcpy (errmsg, _("No MX record for domain "), 127);
	1890	(void) sl_strlcat (errmsg, domain, 127);
	1891	sh_error_handle (SH_ERR_ALL, FIL__, __LINE__, 0, MSG_E_SUBGEN,
	1892	errmsg,
	1893	_("get_mx"));
	1894	#else
[22]	1895	/* flawfinder: ignore // test code only */
[1]	1896	strcpy (errmsg, /* known to fit */
	1897	_("No MX record for domain "));
	1898	strncat (errmsg, domain, 100);
	1899	errmsg[122] = '\0';
	1900	fprintf(stderr, "Warning: %s\n", errmsg);
	1901	#endif
	1902	#endif
	1903	}
[134]	1904
	1905	SH_MUTEX_LOCK(mutex_resolv);
[170]	1906
	1907	host = NULL;
	1908	retval = NULL;
	1909
[1]	1910	if (domain != NULL)
	1911	host = /@-unrecog@/sh_gethostbyname (domain)/@+unrecog@/;
[134]	1912
	1913	if (host)
	1914	{
	1915	result = SH_ALLOC (sizeof (mx));
	1916	retval = SH_ALLOC (sizeof (dnsrep));
	1917	retval->reply = result;
	1918	retval->count = 1;
	1919	result->pref = 0;
	1920	/@-type@/
	1921	len = strlen (host->h_name) + 1;
	1922	result->address = SH_ALLOC (len);
	1923	sl_strlcpy (result->address, host->h_name, len);
	1924	/@+type@/
	1925	}
	1926	SH_MUTEX_UNLOCK(mutex_resolv);
	1927
[1]	1928	if (!host)
	1929	{
	1930	#ifdef FIL__
	1931	(void) sl_strlcpy (errmsg, _("Unknown host "), 127);
	1932	(void) sl_strlcat (errmsg, domain, 127);
	1933	sh_error_handle ((-1), FIL__, __LINE__, 0, MSG_E_SUBGEN,
	1934	errmsg,
	1935	_("return_mx"));
	1936	#endif
	1937	SL_RETURN (NULL, _("return_mx"));
	1938	}
[134]	1939
[1]	1940	SL_RETURN (retval, _("return_mx"));
	1941	}
	1942	}
	1943
[214]	1944	int free_mx (dnsrep * answers)
[1]	1945	{
	1946	mx * result;
	1947	int i;
	1948
	1949	SL_ENTER(_("free_mx"));
	1950	if (!answers)
	1951	SL_RETURN (0, _("return_mx"));
	1952
	1953	result = answers->reply;
	1954	for (i = 0; i < answers->count; ++i)
	1955	{
	1956	SH_FREE (result[i].address);
	1957	}
	1958	SH_FREE(result);
	1959	SH_FREE(answers);
	1960	SL_RETURN (0, _("return_mx"));
	1961	}
	1962
	1963	#ifdef TEST_ONLY
	1964	int main(int argc, char * argv[])
	1965	{
	1966	int i;
	1967	dnsrep * answers;
	1968	mx * result;
	1969
	1970	if (argc < 2)
	1971	{
	1972	fprintf(stderr, "Usage: dns <hostname>\n");
	1973	return -1;
	1974	}
	1975	answers = return_mx(argv[1]);
	1976
	1977	if (!answers)
	1978	{
	1979	fprintf(stderr, "No answer\n");
	1980	return -1;
	1981	}
	1982
	1983	if (answers->count > 0)
	1984	{
	1985	result = answers->reply;
	1986	for (i = 0; i < answers->count; ++i)
	1987	{
	1988	fprintf(stderr, "Record %3d: [%3d] %s\n", i,
	1989	result[i].pref, result[i].address);
	1990	}
	1991	}
	1992	else
	1993	{
	1994	fprintf(stderr, "No answer\n");
	1995	free_mx(answers);
	1996	return -1;
	1997	}
	1998	free_mx(answers);
	1999	return (0);
	2000	}
	2001	#endif
	2002
	2003
	2004
	2005	/* if defined(SH_WITH_MAIL) */
	2006	#endif
	2007
	2008
	2009

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