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- /*
- * Copyright (c) 1983 Eric P. Allman
- * Copyright (c) 1988 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 5.9 (Berkeley) 6/1/90";
- #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:
- ** sayok -- if set, give an ARPANET style message
- ** to say we are ready to collect input.
- **
- ** Returns:
- ** none.
- **
- ** Side Effects:
- ** Temp file is created and filled.
- ** The from person may be set.
- */
-
- collect(sayok)
- bool sayok;
- {
- register FILE *tf;
- char buf[MAXFIELD], buf2[MAXFIELD];
- register char *workbuf, *freebuf;
- register int workbuflen;
- extern char *hvalue();
- extern bool isheader(), flusheol();
-
- /*
- ** Create the temp file name and create the file.
- */
-
- CurEnv->e_df = newstr(queuename(CurEnv, 'd'));
- if ((tf = dfopen(CurEnv->e_df, "w")) == NULL)
- {
- syserr("Cannot create %s", CurEnv->e_df);
- NoReturn = TRUE;
- finis();
- }
- (void) chmod(CurEnv->e_df, FileMode);
-
- /*
- ** Tell ARPANET to go ahead.
- */
-
- if (sayok)
- message("354", "Enter mail, end with \".\" on a line by itself");
-
- /*
- ** Try to read a UNIX-style From line
- */
-
- if (sfgets(buf, MAXFIELD, InChannel) == NULL)
- goto readerr;
- fixcrlf(buf, FALSE);
- # ifndef NOTUNIX
- if (!SaveFrom && strncmp(buf, "From ", 5) == 0)
- {
- if (!flusheol(buf, InChannel))
- goto readerr;
- eatfrom(buf);
- if (sfgets(buf, MAXFIELD, InChannel) == 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 (;;)
- {
- /* 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);
-
- workbuflen = strlen(workbuf);
-
- /* get the rest of this field */
- for (;;)
- {
- if (sfgets(freebuf, MAXFIELD, InChannel) == NULL)
- goto readerr;
-
- /* is this a continuation line? */
- if (*freebuf != ' ' && *freebuf != '\t')
- break;
-
- if (!flusheol(freebuf, InChannel))
- goto readerr;
-
- /* yes; append line to `workbuf' if there's room */
- if (workbuflen < MAXFIELD-3)
- {
- register char *p = workbuf + workbuflen;
- register char *q = freebuf;
-
- /* we have room for more of this field */
- fixcrlf(freebuf, TRUE);
- *p++ = '\n'; workbuflen++;
- while(*q != '\0' && workbuflen < MAXFIELD-1)
- {
- *p++ = *q++;
- workbuflen++;
- }
- *p = '\0';
- }
- }
-
- CurEnv->e_msgsize += workbuflen;
-
- /*
- ** 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(freebuf, FALSE)))
- break;
- }
-
- if (tTd(30, 1))
- printf("EOH\n");
-
- if (*workbuf == '\0')
- {
- /* throw away a blank line */
- if (sfgets(buf, MAXFIELD, InChannel) == NULL)
- goto readerr;
- }
- else if (workbuf == buf2) /* guarantee `buf' contains data */
- (void) strcpy(buf, buf2);
-
- /*
- ** Collect the body of the message.
- */
-
- do
- {
- 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 && !IgnrDot && bp[0] == '.' && bp[1] == '.')
- bp++;
-
- /*
- ** Figure message length, output the line to the temp
- ** file, and insert a newline if missing.
- */
-
- CurEnv->e_msgsize += strlen(bp) + 1;
- fputs(bp, tf);
- fputs("\n", tf);
- if (ferror(tf))
- tferror(tf);
- } while (sfgets(buf, MAXFIELD, InChannel) != NULL);
-
- readerr:
- if (fflush(tf) != 0)
- tferror(tf);
- (void) fclose(tf);
-
- /* An EOF when running SMTP is an error */
- if ((feof(InChannel) || ferror(InChannel)) && OpMode == MD_SMTP)
- {
- int usrerr(), syserr();
- # ifdef LOG
- if (RealHostName != NULL && LogLevel > 0)
- syslog(LOG_NOTICE,
- "collect: unexpected close on connection from %s: %m\n",
- CurEnv->e_from.q_paddr, RealHostName);
- # endif
- (feof(InChannel) ? usrerr: syserr)
- ("collect: unexpected close, from=%s", CurEnv->e_from.q_paddr);
-
- /* don't return an error indication */
- CurEnv->e_to = NULL;
- CurEnv->e_flags &= ~EF_FATALERRS;
-
- /* and don't try to deliver the partial message either */
- finis();
- }
-
- /*
- ** Find out some information from the headers.
- ** Examples are who is the from person & the date.
- */
-
- eatheader(CurEnv);
-
- /*
- ** Add an Apparently-To: line if we have no recipient lines.
- */
-
- if (hvalue("to") == NULL && hvalue("cc") == NULL &&
- hvalue("bcc") == NULL && hvalue("apparently-to") == NULL)
- {
- register ADDRESS *q;
-
- /* create an Apparently-To: field */
- /* that or reject the message.... */
- for (q = CurEnv->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, CurEnv);
- }
- }
-
- if ((CurEnv->e_dfp = fopen(CurEnv->e_df, "r")) == NULL)
- syserr("Cannot reopen %s", CurEnv->e_df);
- }
- /*
- ** 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;
- {
- char junkbuf[MAXLINE], *sfgets();
- register char *p = buf;
-
- while (index(p, '\n') == NULL) {
- if (sfgets(junkbuf,MAXLINE,fp) == NULL)
- return(FALSE);
- p = junkbuf;
- }
-
- return(TRUE);
- }
- /*
- ** 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)
- FILE *tf;
- {
- if (errno == ENOSPC)
- {
- (void) freopen(CurEnv->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", CurEnv->e_df);
- (void) freopen("/dev/null", "w", tf);
- }
- /*
- ** 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)
- char *fm;
- {
- 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 (!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 != NULL)
- {
- char *q;
- extern char *arpadate();
-
- /* we have found a date */
- q = xalloc(25);
- (void) strncpy(q, p, 25);
- q[24] = '\0';
- define('d', q, CurEnv);
- q = arpadate(q);
- define('a', newstr(q), CurEnv);
- }
- }
-
- # endif NOTUNIX
-