[unix-history] / usr.sbin / sendmail / src / collect.c

/*
 * Copyright (c) 1983 Eric P. Allman
 * Copyright (c) 1988, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
static char sccsid[] = "@(#)collect.c	8.6 (Berkeley) 10/27/93";
#endif /* not lint */

# include <errno.h>
# include "sendmail.h"

/*
**  COLLECT -- read & parse message header & make temp file.
**
**	Creates a temporary file name and copies the standard
**	input to that file.  Leading UNIX-style "From" lines are
**	stripped off (after important information is extracted).
**
**	Parameters:
**		smtpmode -- if set, we are running SMTP: give an RFC821
**			style message to say we are ready to collect
**			input, and never ignore a single dot to mean
**			end of message.
**		requeueflag -- this message will be requeued later, so
**			don't do final processing on it.
**		e -- the current envelope.
**
**	Returns:
**		none.
**
**	Side Effects:
**		Temp file is created and filled.
**		The from person may be set.
*/

collect(smtpmode, requeueflag, e)
	bool smtpmode;
	bool requeueflag;
	register ENVELOPE *e;
{
	register FILE *tf;
	bool ignrdot = smtpmode ? FALSE : IgnrDot;
	char buf[MAXLINE], buf2[MAXLINE];
	register char *workbuf, *freebuf;
	bool inputerr = FALSE;
	extern char *hvalue();
	extern bool isheader(), flusheol();

	/*
	**  Create the temp file name and create the file.
	*/

	e->e_df = queuename(e, 'd');
	e->e_df = newstr(e->e_df);
	if ((tf = dfopen(e->e_df, O_WRONLY|O_CREAT, FileMode)) == NULL)
	{
		syserr("Cannot create %s", e->e_df);
		NoReturn = TRUE;
		finis();
	}

	/*
	**  Tell ARPANET to go ahead.
	*/

	if (smtpmode)
		message("354 Enter mail, end with \".\" on a line by itself");

	/*
	**  Try to read a UNIX-style From line
	*/

	if (sfgets(buf, MAXLINE, InChannel, TimeOuts.to_datablock,
			"initial message read") == NULL)
		goto readerr;
	fixcrlf(buf, FALSE);
# ifndef NOTUNIX
	if (!SaveFrom && strncmp(buf, "From ", 5) == 0)
	{
		if (!flusheol(buf, InChannel))
			goto readerr;
		eatfrom(buf, e);
		if (sfgets(buf, MAXLINE, InChannel, TimeOuts.to_datablock,
				"message header read") == NULL)
			goto readerr;
		fixcrlf(buf, FALSE);
	}
# endif /* NOTUNIX */

	/*
	**  Copy InChannel to temp file & do message editing.
	**	To keep certain mailers from getting confused,
	**	and to keep the output clean, lines that look
	**	like UNIX "From" lines are deleted in the header.
	*/

	workbuf = buf;		/* `workbuf' contains a header field */
	freebuf = buf2;		/* `freebuf' can be used for read-ahead */
	for (;;)
	{
		char *curbuf;
		int curbuffree;
		register int curbuflen;
		char *p;

		/* first, see if the header is over */
		if (!isheader(workbuf))
		{
			fixcrlf(workbuf, TRUE);
			break;
		}

		/* if the line is too long, throw the rest away */
		if (!flusheol(workbuf, InChannel))
			goto readerr;

		/* it's okay to toss '\n' now (flusheol() needed it) */
		fixcrlf(workbuf, TRUE);

		curbuf = workbuf;
		curbuflen = strlen(curbuf);
		curbuffree = MAXLINE - curbuflen;
		p = curbuf + curbuflen;

		/* get the rest of this field */
		for (;;)
		{
			int clen;

			if (sfgets(freebuf, MAXLINE, InChannel,
					TimeOuts.to_datablock,
					"message header read") == NULL)
				goto readerr;

			/* is this a continuation line? */
			if (*freebuf != ' ' && *freebuf != '\t')
				break;

			if (!flusheol(freebuf, InChannel))
				goto readerr;

			fixcrlf(freebuf, TRUE);
			clen = strlen(freebuf) + 1;

			/* if insufficient room, dynamically allocate buffer */
			if (clen >= curbuffree)
			{
				/* reallocate buffer */
				int nbuflen = ((p - curbuf) + clen) * 2;
				char *nbuf = xalloc(nbuflen);

				p = nbuf + curbuflen;
				curbuffree = nbuflen - curbuflen;
				bcopy(curbuf, nbuf, curbuflen);
				if (curbuf != buf && curbuf != buf2)
					free(curbuf);
				curbuf = nbuf;
			}
			*p++ = '\n';
			bcopy(freebuf, p, clen - 1);
			p += clen - 1;
			curbuffree -= clen;
			curbuflen += clen;
		}
		*p++ = '\0';

		e->e_msgsize += curbuflen;

		/*
		**  The working buffer now becomes the free buffer, since
		**  the free buffer contains a new header field.
		**
		**  This is premature, since we still havent called
		**  chompheader() to process the field we just created
		**  (so the call to chompheader() will use `freebuf').
		**  This convolution is necessary so that if we break out
		**  of the loop due to H_EOH, `workbuf' will always be
		**  the next unprocessed buffer.
		*/

		{
			register char *tmp = workbuf;
			workbuf = freebuf;
			freebuf = tmp;
		}

		/*
		**  Snarf header away.
		*/

		if (bitset(H_EOH, chompheader(curbuf, FALSE, e)))
			break;

		/*
		**  If the buffer was dynamically allocated, free it.
		*/

		if (curbuf != buf && curbuf != buf2)
			free(curbuf);
	}

	if (tTd(30, 1))
		printf("EOH\n");

	if (*workbuf == '\0')
	{
		/* throw away a blank line */
		if (sfgets(buf, MAXLINE, InChannel, TimeOuts.to_datablock,
				"message separator read") == NULL)
			goto readerr;
	}
	else if (workbuf == buf2)	/* guarantee `buf' contains data */
		(void) strcpy(buf, buf2);

	/*
	**  Collect the body of the message.
	*/

	for (;;)
	{
		register char *bp = buf;

		fixcrlf(buf, TRUE);

		/* check for end-of-message */
		if (!ignrdot && buf[0] == '.' && (buf[1] == '\n' || buf[1] == '\0'))
			break;

		/* check for transparent dot */
		if (OpMode == MD_SMTP && bp[0] == '.' && bp[1] == '.')
			bp++;

		/*
		**  Figure message length, output the line to the temp
		**  file, and insert a newline if missing.
		*/

		e->e_msgsize += strlen(bp) + 1;
		fputs(bp, tf);
		fputs("\n", tf);
		if (ferror(tf))
			tferror(tf, e);
		if (sfgets(buf, MAXLINE, InChannel, TimeOuts.to_datablock,
				"message body read") == NULL)
			goto readerr;
	}

	if (feof(InChannel) || ferror(InChannel))
	{
readerr:
		inputerr = TRUE;
	}

	if (fflush(tf) != 0)
		tferror(tf, e);
	if (fsync(fileno(tf)) < 0 || fclose(tf) < 0)
	{
		syserr("cannot sync message data to disk (%s)", e->e_df);
		finis();
	}

	/* An EOF when running SMTP is an error */
	if (inputerr && OpMode == MD_SMTP)
	{
		char *host;
		char *problem;

		host = RealHostName;
		if (host == NULL)
			host = "localhost";

		if (feof(InChannel))
			problem = "unexpected close";
		else if (ferror(InChannel))
			problem = "I/O error";
		else
			problem = "read timeout";
# ifdef LOG
		if (LogLevel > 0 && feof(InChannel))
			syslog(LOG_NOTICE,
			    "collect: %s on connection from %s, sender=%s: %m\n",
			    problem, host, e->e_from.q_paddr);
# endif
		(feof(InChannel) ? usrerr : syserr)
			("451 collect: %s on connection from %s, from=%s",
				problem, host, e->e_from.q_paddr);

		/* don't return an error indication */
		e->e_to = NULL;
		e->e_flags &= ~EF_FATALERRS;
		e->e_flags |= EF_CLRQUEUE;

		/* and don't try to deliver the partial message either */
		if (InChild)
			ExitStat = EX_QUIT;
		finis();
	}

	/*
	**  Find out some information from the headers.
	**	Examples are who is the from person & the date.
	*/

	eatheader(e, !requeueflag);

	/* collect statistics */
	if (OpMode != MD_VERIFY)
		markstats(e, (ADDRESS *) NULL);

	/*
	**  Add an Apparently-To: line if we have no recipient lines.
	*/

	if (hvalue("to", e) == NULL && hvalue("cc", e) == NULL &&
	    hvalue("bcc", e) == NULL && hvalue("apparently-to", e) == NULL)
	{
		register ADDRESS *q;

		/* create an Apparently-To: field */
		/*    that or reject the message.... */
		for (q = e->e_sendqueue; q != NULL; q = q->q_next)
		{
			if (q->q_alias != NULL)
				continue;
			if (tTd(30, 3))
				printf("Adding Apparently-To: %s\n", q->q_paddr);
			addheader("Apparently-To", q->q_paddr, e);
		}
	}

	/* check for message too large */
	if (MaxMessageSize > 0 && e->e_msgsize > MaxMessageSize)
	{
		usrerr("552 Message exceeds maximum fixed size (%ld)",
			MaxMessageSize);
	}

	if ((e->e_dfp = fopen(e->e_df, "r")) == NULL)
	{
		/* we haven't acked receipt yet, so just chuck this */
		syserr("Cannot reopen %s", e->e_df);
		finis();
	}
}
\f/*
**  FLUSHEOL -- if not at EOL, throw away rest of input line.
**
**	Parameters:
**		buf -- last line read in (checked for '\n'),
**		fp -- file to be read from.
**
**	Returns:
**		FALSE on error from sfgets(), TRUE otherwise.
**
**	Side Effects:
**		none.
*/

bool
flusheol(buf, fp)
	char *buf;
	FILE *fp;
{
	register char *p = buf;
	bool printmsg = TRUE;
	char junkbuf[MAXLINE];

	while (strchr(p, '\n') == NULL)
	{
		if (printmsg)
			usrerr("553 header line too long");
		printmsg = FALSE;
		if (sfgets(junkbuf, MAXLINE, fp, TimeOuts.to_datablock,
				"long line flush") == NULL)
			return (FALSE);
		p = junkbuf;
	}

	return (TRUE);
}
\f/*
**  TFERROR -- signal error on writing the temporary file.
**
**	Parameters:
**		tf -- the file pointer for the temporary file.
**
**	Returns:
**		none.
**
**	Side Effects:
**		Gives an error message.
**		Arranges for following output to go elsewhere.
*/

tferror(tf, e)
	FILE *tf;
	register ENVELOPE *e;
{
	if (errno == ENOSPC)
	{
		(void) freopen(e->e_df, "w", tf);
		fputs("\nMAIL DELETED BECAUSE OF LACK OF DISK SPACE\n\n", tf);
		usrerr("452 Out of disk space for temp file");
	}
	else
		syserr("collect: Cannot write %s", e->e_df);
	(void) freopen("/dev/null", "w", tf);
}
\f/*
**  EATFROM -- chew up a UNIX style from line and process
**
**	This does indeed make some assumptions about the format
**	of UNIX messages.
**
**	Parameters:
**		fm -- the from line.
**
**	Returns:
**		none.
**
**	Side Effects:
**		extracts what information it can from the header,
**		such as the date.
*/

# ifndef NOTUNIX

char	*DowList[] =
{
	"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", NULL
};

char	*MonthList[] =
{
	"Jan", "Feb", "Mar", "Apr", "May", "Jun",
	"Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
	NULL
};

eatfrom(fm, e)
	char *fm;
	register ENVELOPE *e;
{
	register char *p;
	register char **dt;

	if (tTd(30, 2))
		printf("eatfrom(%s)\n", fm);

	/* find the date part */
	p = fm;
	while (*p != '\0')
	{
		/* skip a word */
		while (*p != '\0' && *p != ' ')
			p++;
		while (*p == ' ')
			p++;
		if (!(isascii(*p) && isupper(*p)) ||
		    p[3] != ' ' || p[13] != ':' || p[16] != ':')
			continue;

		/* we have a possible date */
		for (dt = DowList; *dt != NULL; dt++)
			if (strncmp(*dt, p, 3) == 0)
				break;
		if (*dt == NULL)
			continue;

		for (dt = MonthList; *dt != NULL; dt++)
			if (strncmp(*dt, &p[4], 3) == 0)
				break;
		if (*dt != NULL)
			break;
	}

	if (*p != '\0')
	{
		char *q;
		extern char *arpadate();

		/* we have found a date */
		q = xalloc(25);
		(void) strncpy(q, p, 25);
		q[24] = '\0';
		q = arpadate(q);
		define('a', newstr(q), e);
	}
}

# endif /* NOTUNIX */
Commit	Line	Data
15637ed4 RG	1	/*
15637ed4 RG	2	* Copyright (c) 1983 Eric P. Allman
6f14531a RG	3	* Copyright (c) 1988, 1993
6f14531a RG	4	* The Regents of the University of California. All rights reserved.
15637ed4 RG	5	*
	6	* Redistribution and use in source and binary forms, with or without
	7	* modification, are permitted provided that the following conditions
	8	* are met:
	9	* 1. Redistributions of source code must retain the above copyright
	10	* notice, this list of conditions and the following disclaimer.
	11	* 2. Redistributions in binary form must reproduce the above copyright
	12	* notice, this list of conditions and the following disclaimer in the
	13	* documentation and/or other materials provided with the distribution.
	14	* 3. All advertising materials mentioning features or use of this software
	15	* must display the following acknowledgement:
	16	* This product includes software developed by the University of
	17	* California, Berkeley and its contributors.
	18	* 4. Neither the name of the University nor the names of its contributors
	19	* may be used to endorse or promote products derived from this software
	20	* without specific prior written permission.
	21	*
	22	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	23	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	24	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	25	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	26	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	27	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	28	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	29	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	30	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	31	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	32	* SUCH DAMAGE.
	33	*/
	34
	35	#ifndef lint
69fc843f	36	static char sccsid[] = "@(#)collect.c 8.6 (Berkeley) 10/27/93";
15637ed4 RG	37	#endif /* not lint */
	38
	39	# include <errno.h>
	40	# include "sendmail.h"
	41
	42	/*
	43	** COLLECT -- read & parse message header & make temp file.
	44	**
	45	** Creates a temporary file name and copies the standard
	46	** input to that file. Leading UNIX-style "From" lines are
	47	** stripped off (after important information is extracted).
	48	**
	49	** Parameters:
6f14531a RG	50	** smtpmode -- if set, we are running SMTP: give an RFC821
	51	** style message to say we are ready to collect
	52	** input, and never ignore a single dot to mean
	53	** end of message.
	54	** requeueflag -- this message will be requeued later, so
	55	** don't do final processing on it.
	56	** e -- the current envelope.
15637ed4 RG	57	**
	58	** Returns:
	59	** none.
	60	**
	61	** Side Effects:
	62	** Temp file is created and filled.
	63	** The from person may be set.
	64	*/
	65
6f14531a RG	66	collect(smtpmode, requeueflag, e)
	67	bool smtpmode;
	68	bool requeueflag;
	69	register ENVELOPE *e;
15637ed4 RG	70	{
15637ed4 RG	71	register FILE *tf;
6f14531a RG	72	bool ignrdot = smtpmode ? FALSE : IgnrDot;
6f14531a RG	73	char buf[MAXLINE], buf2[MAXLINE];
15637ed4	74	register char workbuf, freebuf;
d747e748	75	bool inputerr = FALSE;
15637ed4 RG	76	extern char *hvalue();
	77	extern bool isheader(), flusheol();
	78
	79	/*
	80	** Create the temp file name and create the file.
	81	*/
	82
d747e748 JH	83	e->e_df = queuename(e, 'd');
d747e748 JH	84	e->e_df = newstr(e->e_df);
6f14531a	85	if ((tf = dfopen(e->e_df, O_WRONLY\|O_CREAT, FileMode)) == NULL)
15637ed4	86	{
6f14531a	87	syserr("Cannot create %s", e->e_df);
15637ed4 RG	88	NoReturn = TRUE;
	89	finis();
	90	}
15637ed4 RG	91
	92	/*
	93	** Tell ARPANET to go ahead.
	94	*/
	95
6f14531a RG	96	if (smtpmode)
6f14531a RG	97	message("354 Enter mail, end with \".\" on a line by itself");
15637ed4 RG	98
	99	/*
	100	** Try to read a UNIX-style From line
	101	*/
	102
6f14531a RG	103	if (sfgets(buf, MAXLINE, InChannel, TimeOuts.to_datablock,
6f14531a RG	104	"initial message read") == NULL)
15637ed4 RG	105	goto readerr;
	106	fixcrlf(buf, FALSE);
	107	# ifndef NOTUNIX
	108	if (!SaveFrom && strncmp(buf, "From ", 5) == 0)
	109	{
	110	if (!flusheol(buf, InChannel))
	111	goto readerr;
6f14531a RG	112	eatfrom(buf, e);
	113	if (sfgets(buf, MAXLINE, InChannel, TimeOuts.to_datablock,
	114	"message header read") == NULL)
15637ed4 RG	115	goto readerr;
	116	fixcrlf(buf, FALSE);
	117	}
6f14531a	118	# endif /* NOTUNIX */
15637ed4 RG	119
	120	/*
	121	** Copy InChannel to temp file & do message editing.
	122	** To keep certain mailers from getting confused,
	123	** and to keep the output clean, lines that look
	124	** like UNIX "From" lines are deleted in the header.
	125	*/
	126
	127	workbuf = buf; /* `workbuf' contains a header field */
	128	freebuf = buf2; /* `freebuf' can be used for read-ahead */
	129	for (;;)
	130	{
6f14531a RG	131	char *curbuf;
	132	int curbuffree;
	133	register int curbuflen;
	134	char *p;
	135
15637ed4 RG	136	/* first, see if the header is over */
	137	if (!isheader(workbuf))
	138	{
	139	fixcrlf(workbuf, TRUE);
	140	break;
	141	}
	142
	143	/* if the line is too long, throw the rest away */
	144	if (!flusheol(workbuf, InChannel))
	145	goto readerr;
	146
	147	/* it's okay to toss '\n' now (flusheol() needed it) */
	148	fixcrlf(workbuf, TRUE);
	149
6f14531a RG	150	curbuf = workbuf;
	151	curbuflen = strlen(curbuf);
	152	curbuffree = MAXLINE - curbuflen;
	153	p = curbuf + curbuflen;
15637ed4 RG	154
	155	/* get the rest of this field */
	156	for (;;)
	157	{
6f14531a RG	158	int clen;
	159
	160	if (sfgets(freebuf, MAXLINE, InChannel,
	161	TimeOuts.to_datablock,
	162	"message header read") == NULL)
15637ed4 RG	163	goto readerr;
	164
	165	/* is this a continuation line? */
	166	if (freebuf != ' ' && freebuf != '\t')
	167	break;
	168
	169	if (!flusheol(freebuf, InChannel))
	170	goto readerr;
	171
6f14531a RG	172	fixcrlf(freebuf, TRUE);
	173	clen = strlen(freebuf) + 1;
	174
	175	/* if insufficient room, dynamically allocate buffer */
	176	if (clen >= curbuffree)
15637ed4	177	{
6f14531a RG	178	/* reallocate buffer */
	179	int nbuflen = ((p - curbuf) + clen) * 2;
	180	char *nbuf = xalloc(nbuflen);
	181
	182	p = nbuf + curbuflen;
	183	curbuffree = nbuflen - curbuflen;
	184	bcopy(curbuf, nbuf, curbuflen);
	185	if (curbuf != buf && curbuf != buf2)
	186	free(curbuf);
	187	curbuf = nbuf;
15637ed4	188	}
6f14531a RG	189	*p++ = '\n';
	190	bcopy(freebuf, p, clen - 1);
	191	p += clen - 1;
	192	curbuffree -= clen;
	193	curbuflen += clen;
15637ed4	194	}
6f14531a	195	*p++ = '\0';
15637ed4	196
6f14531a	197	e->e_msgsize += curbuflen;
15637ed4 RG	198
	199	/*
	200	** The working buffer now becomes the free buffer, since
	201	** the free buffer contains a new header field.
	202	**
	203	** This is premature, since we still havent called
	204	** chompheader() to process the field we just created
	205	** (so the call to chompheader() will use `freebuf').
	206	** This convolution is necessary so that if we break out
	207	** of the loop due to H_EOH, `workbuf' will always be
	208	** the next unprocessed buffer.
	209	*/
	210
	211	{
	212	register char *tmp = workbuf;
	213	workbuf = freebuf;
	214	freebuf = tmp;
	215	}
	216
	217	/*
	218	** Snarf header away.
	219	*/
	220
6f14531a	221	if (bitset(H_EOH, chompheader(curbuf, FALSE, e)))
15637ed4	222	break;
6f14531a RG	223
	224	/*
	225	** If the buffer was dynamically allocated, free it.
	226	*/
	227
	228	if (curbuf != buf && curbuf != buf2)
	229	free(curbuf);
15637ed4 RG	230	}
	231
	232	if (tTd(30, 1))
	233	printf("EOH\n");
	234
	235	if (*workbuf == '\0')
	236	{
	237	/* throw away a blank line */
6f14531a RG	238	if (sfgets(buf, MAXLINE, InChannel, TimeOuts.to_datablock,
6f14531a RG	239	"message separator read") == NULL)
15637ed4 RG	240	goto readerr;
	241	}
	242	else if (workbuf == buf2) /* guarantee `buf' contains data */
	243	(void) strcpy(buf, buf2);
	244
	245	/*
	246	** Collect the body of the message.
	247	*/
	248
d747e748	249	for (;;)
15637ed4 RG	250	{
	251	register char *bp = buf;
	252
	253	fixcrlf(buf, TRUE);
	254
	255	/* check for end-of-message */
6f14531a	256	if (!ignrdot && buf[0] == '.' && (buf[1] == '\n' \|\| buf[1] == '\0'))
15637ed4 RG	257	break;
	258
	259	/* check for transparent dot */
6f14531a	260	if (OpMode == MD_SMTP && bp[0] == '.' && bp[1] == '.')
15637ed4 RG	261	bp++;
	262
	263	/*
	264	** Figure message length, output the line to the temp
	265	** file, and insert a newline if missing.
	266	*/
	267
6f14531a	268	e->e_msgsize += strlen(bp) + 1;
15637ed4 RG	269	fputs(bp, tf);
	270	fputs("\n", tf);
	271	if (ferror(tf))
6f14531a	272	tferror(tf, e);
d747e748 JH	273	if (sfgets(buf, MAXLINE, InChannel, TimeOuts.to_datablock,
	274	"message body read") == NULL)
	275	goto readerr;
	276	}
15637ed4	277
d747e748 JH	278	if (feof(InChannel) \|\| ferror(InChannel))
d747e748 JH	279	{
15637ed4	280	readerr:
d747e748 JH	281	inputerr = TRUE;
	282	}
	283
15637ed4	284	if (fflush(tf) != 0)
6f14531a	285	tferror(tf, e);
69fc843f AM	286	if (fsync(fileno(tf)) < 0 \|\| fclose(tf) < 0)
	287	{
	288	syserr("cannot sync message data to disk (%s)", e->e_df);
	289	finis();
	290	}
15637ed4 RG	291
15637ed4 RG	292	/* An EOF when running SMTP is an error */
d747e748	293	if (inputerr && OpMode == MD_SMTP)
15637ed4	294	{
6f14531a	295	char *host;
d747e748	296	char *problem;
6f14531a RG	297
	298	host = RealHostName;
	299	if (host == NULL)
	300	host = "localhost";
	301
d747e748 JH	302	if (feof(InChannel))
	303	problem = "unexpected close";
	304	else if (ferror(InChannel))
	305	problem = "I/O error";
	306	else
	307	problem = "read timeout";
15637ed4	308	# ifdef LOG
6f14531a	309	if (LogLevel > 0 && feof(InChannel))
15637ed4	310	syslog(LOG_NOTICE,
d747e748 JH	311	"collect: %s on connection from %s, sender=%s: %m\n",
d747e748 JH	312	problem, host, e->e_from.q_paddr);
15637ed4	313	# endif
6f14531a	314	(feof(InChannel) ? usrerr : syserr)
d747e748 JH	315	("451 collect: %s on connection from %s, from=%s",
d747e748 JH	316	problem, host, e->e_from.q_paddr);
15637ed4 RG	317
15637ed4 RG	318	/* don't return an error indication */
6f14531a RG	319	e->e_to = NULL;
6f14531a RG	320	e->e_flags &= ~EF_FATALERRS;
d747e748	321	e->e_flags \|= EF_CLRQUEUE;
15637ed4 RG	322
15637ed4 RG	323	/* and don't try to deliver the partial message either */
d747e748 JH	324	if (InChild)
d747e748 JH	325	ExitStat = EX_QUIT;
15637ed4 RG	326	finis();
	327	}
	328
	329	/*
	330	** Find out some information from the headers.
	331	** Examples are who is the from person & the date.
	332	*/
	333
6f14531a	334	eatheader(e, !requeueflag);
15637ed4	335
d747e748 JH	336	/* collect statistics */
	337	if (OpMode != MD_VERIFY)
	338	markstats(e, (ADDRESS *) NULL);
	339
15637ed4 RG	340	/*
	341	** Add an Apparently-To: line if we have no recipient lines.
	342	*/
	343
6f14531a RG	344	if (hvalue("to", e) == NULL && hvalue("cc", e) == NULL &&
6f14531a RG	345	hvalue("bcc", e) == NULL && hvalue("apparently-to", e) == NULL)
15637ed4 RG	346	{
	347	register ADDRESS *q;
	348
	349	/* create an Apparently-To: field */
	350	/* that or reject the message.... */
6f14531a	351	for (q = e->e_sendqueue; q != NULL; q = q->q_next)
15637ed4 RG	352	{
	353	if (q->q_alias != NULL)
	354	continue;
	355	if (tTd(30, 3))
	356	printf("Adding Apparently-To: %s\n", q->q_paddr);
6f14531a	357	addheader("Apparently-To", q->q_paddr, e);
15637ed4 RG	358	}
	359	}
	360
6f14531a RG	361	/* check for message too large */
	362	if (MaxMessageSize > 0 && e->e_msgsize > MaxMessageSize)
	363	{
	364	usrerr("552 Message exceeds maximum fixed size (%ld)",
	365	MaxMessageSize);
	366	}
	367
	368	if ((e->e_dfp = fopen(e->e_df, "r")) == NULL)
	369	{
	370	/* we haven't acked receipt yet, so just chuck this */
	371	syserr("Cannot reopen %s", e->e_df);
	372	finis();
	373	}
15637ed4 RG	374	}
	375	\f/*
	376	** FLUSHEOL -- if not at EOL, throw away rest of input line.
	377	**
	378	** Parameters:
	379	** buf -- last line read in (checked for '\n'),
	380	** fp -- file to be read from.
	381	**
	382	** Returns:
	383	** FALSE on error from sfgets(), TRUE otherwise.
	384	**
	385	** Side Effects:
	386	** none.
	387	*/
	388
	389	bool
	390	flusheol(buf, fp)
	391	char *buf;
	392	FILE *fp;
	393	{
15637ed4	394	register char *p = buf;
6f14531a RG	395	bool printmsg = TRUE;
6f14531a RG	396	char junkbuf[MAXLINE];
15637ed4	397
6f14531a RG	398	while (strchr(p, '\n') == NULL)
	399	{
	400	if (printmsg)
	401	usrerr("553 header line too long");
	402	printmsg = FALSE;
	403	if (sfgets(junkbuf, MAXLINE, fp, TimeOuts.to_datablock,
	404	"long line flush") == NULL)
	405	return (FALSE);
15637ed4 RG	406	p = junkbuf;
	407	}
	408
6f14531a	409	return (TRUE);
15637ed4 RG	410	}
	411	\f/*
	412	** TFERROR -- signal error on writing the temporary file.
	413	**
	414	** Parameters:
	415	** tf -- the file pointer for the temporary file.
	416	**
	417	** Returns:
	418	** none.
	419	**
	420	** Side Effects:
	421	** Gives an error message.
	422	** Arranges for following output to go elsewhere.
	423	*/
	424
6f14531a	425	tferror(tf, e)
15637ed4	426	FILE *tf;
6f14531a	427	register ENVELOPE *e;
15637ed4 RG	428	{
	429	if (errno == ENOSPC)
	430	{
6f14531a	431	(void) freopen(e->e_df, "w", tf);
15637ed4 RG	432	fputs("\nMAIL DELETED BECAUSE OF LACK OF DISK SPACE\n\n", tf);
	433	usrerr("452 Out of disk space for temp file");
	434	}
	435	else
6f14531a	436	syserr("collect: Cannot write %s", e->e_df);
15637ed4 RG	437	(void) freopen("/dev/null", "w", tf);
	438	}
	439	\f/*
	440	** EATFROM -- chew up a UNIX style from line and process
	441	**
	442	** This does indeed make some assumptions about the format
	443	** of UNIX messages.
	444	**
	445	** Parameters:
	446	** fm -- the from line.
	447	**
	448	** Returns:
	449	** none.
	450	**
	451	** Side Effects:
	452	** extracts what information it can from the header,
	453	** such as the date.
	454	*/
	455
	456	# ifndef NOTUNIX
	457
	458	char *DowList[] =
	459	{
	460	"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", NULL
	461	};
	462
	463	char *MonthList[] =
	464	{
	465	"Jan", "Feb", "Mar", "Apr", "May", "Jun",
	466	"Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
	467	NULL
	468	};
	469
6f14531a	470	eatfrom(fm, e)
15637ed4	471	char *fm;
6f14531a	472	register ENVELOPE *e;
15637ed4 RG	473	{
	474	register char *p;
	475	register char **dt;
	476
	477	if (tTd(30, 2))
	478	printf("eatfrom(%s)\n", fm);
	479
	480	/* find the date part */
	481	p = fm;
	482	while (*p != '\0')
	483	{
	484	/* skip a word */
	485	while (p != '\0' && p != ' ')
	486	p++;
	487	while (*p == ' ')
	488	p++;
6f14531a RG	489	if (!(isascii(p) && isupper(p)) \|\|
6f14531a RG	490	p[3] != ' ' \|\| p[13] != ':' \|\| p[16] != ':')
15637ed4 RG	491	continue;
	492
	493	/* we have a possible date */
	494	for (dt = DowList; *dt != NULL; dt++)
	495	if (strncmp(*dt, p, 3) == 0)
	496	break;
	497	if (*dt == NULL)
	498	continue;
	499
	500	for (dt = MonthList; *dt != NULL; dt++)
	501	if (strncmp(*dt, &p[4], 3) == 0)
	502	break;
	503	if (*dt != NULL)
	504	break;
	505	}
	506
6f14531a	507	if (*p != '\0')
15637ed4 RG	508	{
	509	char *q;
	510	extern char *arpadate();
	511
	512	/* we have found a date */
	513	q = xalloc(25);
	514	(void) strncpy(q, p, 25);
	515	q[24] = '\0';
15637ed4	516	q = arpadate(q);
6f14531a	517	define('a', newstr(q), e);
15637ed4 RG	518	}
	519	}
	520
6f14531a	521	# endif /* NOTUNIX */