FreeBSD-5.3/usr.bin/mail/send.c
/*
* Copyright (c) 1980, 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
#if 0
static char sccsid[] = "@(#)send.c 8.1 (Berkeley) 6/6/93";
#endif
#endif /* not lint */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/usr.bin/mail/send.c,v 1.14 2004/02/29 20:44:44 mikeh Exp $");
#include "rcv.h"
#include "extern.h"
/*
* Mail -- a mail program
*
* Mail to others.
*/
/*
* Send message described by the passed pointer to the
* passed output buffer. Return -1 on error.
* Adjust the status: field if need be.
* If doign is given, suppress ignored header fields.
* prefix is a string to prepend to each output line.
*/
int
sendmessage(mp, obuf, doign, prefix)
struct message *mp;
FILE *obuf;
struct ignoretab *doign;
char *prefix;
{
long count;
FILE *ibuf;
char *cp, *cp2, line[LINESIZE];
int ishead, infld, ignoring, dostat, firstline;
int c, length, prefixlen;
/*
* Compute the prefix string, without trailing whitespace
*/
if (prefix != NULL) {
cp2 = 0;
for (cp = prefix; *cp != '\0'; cp++)
if (*cp != ' ' && *cp != '\t')
cp2 = cp;
prefixlen = cp2 == NULL ? 0 : cp2 - prefix + 1;
}
ibuf = setinput(mp);
count = mp->m_size;
ishead = 1;
dostat = doign == 0 || !isign("status", doign);
infld = 0;
firstline = 1;
/*
* Process headers first
*/
while (count > 0 && ishead) {
if (fgets(line, sizeof(line), ibuf) == NULL)
break;
count -= length = strlen(line);
if (firstline) {
/*
* First line is the From line, so no headers
* there to worry about
*/
firstline = 0;
ignoring = doign == ignoreall;
} else if (line[0] == '\n') {
/*
* If line is blank, we've reached end of
* headers, so force out status: field
* and note that we are no longer in header
* fields
*/
if (dostat) {
statusput(mp, obuf, prefix);
dostat = 0;
}
ishead = 0;
ignoring = doign == ignoreall;
} else if (infld && (line[0] == ' ' || line[0] == '\t')) {
/*
* If this line is a continuation (via space or tab)
* of a previous header field, just echo it
* (unless the field should be ignored).
* In other words, nothing to do.
*/
} else {
/*
* Pick up the header field if we have one.
*/
for (cp = line; (c = *cp++) != '\0' && c != ':' &&
!isspace((unsigned char)c);)
;
cp2 = --cp;
while (isspace((unsigned char)*cp++))
;
if (cp[-1] != ':') {
/*
* Not a header line, force out status:
* This happens in uucp style mail where
* there are no headers at all.
*/
if (dostat) {
statusput(mp, obuf, prefix);
dostat = 0;
}
if (doign != ignoreall)
/* add blank line */
(void)putc('\n', obuf);
ishead = 0;
ignoring = 0;
} else {
/*
* If it is an ignored field and
* we care about such things, skip it.
*/
*cp2 = '\0'; /* temporarily null terminate */
if (doign && isign(line, doign))
ignoring = 1;
else if ((line[0] == 's' || line[0] == 'S') &&
strcasecmp(line, "status") == 0) {
/*
* If the field is "status," go compute
* and print the real Status: field
*/
if (dostat) {
statusput(mp, obuf, prefix);
dostat = 0;
}
ignoring = 1;
} else {
ignoring = 0;
*cp2 = c; /* restore */
}
infld = 1;
}
}
if (!ignoring) {
/*
* Strip trailing whitespace from prefix
* if line is blank.
*/
if (prefix != NULL) {
if (length > 1)
fputs(prefix, obuf);
else
(void)fwrite(prefix, sizeof(*prefix),
prefixlen, obuf);
}
(void)fwrite(line, sizeof(*line), length, obuf);
if (ferror(obuf))
return (-1);
}
}
/*
* Copy out message body
*/
if (doign == ignoreall)
count--; /* skip final blank line */
if (prefix != NULL)
while (count > 0) {
if (fgets(line, sizeof(line), ibuf) == NULL) {
c = 0;
break;
}
count -= c = strlen(line);
/*
* Strip trailing whitespace from prefix
* if line is blank.
*/
if (c > 1)
fputs(prefix, obuf);
else
(void)fwrite(prefix, sizeof(*prefix),
prefixlen, obuf);
(void)fwrite(line, sizeof(*line), c, obuf);
if (ferror(obuf))
return (-1);
}
else
while (count > 0) {
c = count < LINESIZE ? count : LINESIZE;
if ((c = fread(line, sizeof(*line), c, ibuf)) <= 0)
break;
count -= c;
if (fwrite(line, sizeof(*line), c, obuf) != c)
return (-1);
}
if (doign == ignoreall && c > 0 && line[c - 1] != '\n')
/* no final blank line */
if ((c = getc(ibuf)) != EOF && putc(c, obuf) == EOF)
return (-1);
return (0);
}
/*
* Output a reasonable looking status field.
*/
void
statusput(mp, obuf, prefix)
struct message *mp;
FILE *obuf;
char *prefix;
{
char statout[3];
char *cp = statout;
if (mp->m_flag & MREAD)
*cp++ = 'R';
if ((mp->m_flag & MNEW) == 0)
*cp++ = 'O';
*cp = '\0';
if (statout[0] != '\0')
fprintf(obuf, "%sStatus: %s\n",
prefix == NULL ? "" : prefix, statout);
}
/*
* Interface between the argument list and the mail1 routine
* which does all the dirty work.
*/
int
mail(to, cc, bcc, smopts, subject, replyto)
struct name *to, *cc, *bcc, *smopts;
char *subject, *replyto;
{
struct header head;
head.h_to = to;
head.h_subject = subject;
head.h_cc = cc;
head.h_bcc = bcc;
head.h_smopts = smopts;
head.h_replyto = replyto;
head.h_inreplyto = NULL;
mail1(&head, 0);
return (0);
}
/*
* Send mail to a bunch of user names. The interface is through
* the mail routine below.
*/
int
sendmail(str)
char *str;
{
struct header head;
head.h_to = extract(str, GTO);
head.h_subject = NULL;
head.h_cc = NULL;
head.h_bcc = NULL;
head.h_smopts = NULL;
head.h_replyto = value("REPLYTO");
head.h_inreplyto = NULL;
mail1(&head, 0);
return (0);
}
/*
* Mail a message on standard input to the people indicated
* in the passed header. (Internal interface).
*/
void
mail1(hp, printheaders)
struct header *hp;
int printheaders;
{
char *cp;
char *nbuf;
int pid;
char **namelist;
struct name *to, *nsto;
FILE *mtf;
/*
* Collect user's mail from standard input.
* Get the result as mtf.
*/
if ((mtf = collect(hp, printheaders)) == NULL)
return;
if (value("interactive") != NULL) {
if (value("askcc") != NULL || value("askbcc") != NULL) {
if (value("askcc") != NULL)
grabh(hp, GCC);
if (value("askbcc") != NULL)
grabh(hp, GBCC);
} else {
printf("EOT\n");
(void)fflush(stdout);
}
}
if (fsize(mtf) == 0) {
if (value("dontsendempty") != NULL)
goto out;
if (hp->h_subject == NULL)
printf("No message, no subject; hope that's ok\n");
else
printf("Null message body; hope that's ok\n");
}
/*
* Now, take the user names from the combined
* to and cc lists and do all the alias
* processing.
*/
senderr = 0;
to = usermap(cat(hp->h_bcc, cat(hp->h_to, hp->h_cc)));
if (to == NULL) {
printf("No recipients specified\n");
senderr++;
}
/*
* Look through the recipient list for names with /'s
* in them which we write to as files directly.
*/
to = outof(to, mtf, hp);
if (senderr)
savedeadletter(mtf);
to = elide(to);
if (count(to) == 0)
goto out;
if (value("recordrecip") != NULL) {
/*
* Before fixing the header, save old To:.
* We do this because elide above has sorted To: list, and
* we would like to save message in a file named by the first
* recipient the user has entered, not the one being the first
* after sorting happened.
*/
if ((nsto = malloc(sizeof(struct name))) == NULL)
err(1, "Out of memory");
bcopy(hp->h_to, nsto, sizeof(struct name));
}
fixhead(hp, to);
if ((mtf = infix(hp, mtf)) == NULL) {
fprintf(stderr, ". . . message lost, sorry.\n");
return;
}
namelist = unpack(cat(hp->h_smopts, to));
if (debug) {
char **t;
printf("Sendmail arguments:");
for (t = namelist; *t != NULL; t++)
printf(" \"%s\"", *t);
printf("\n");
goto out;
}
if (value("recordrecip") != NULL) {
/*
* Extract first recipient username from saved To: and use it
* as a filename.
*/
if ((nbuf = malloc(strlen(detract(nsto, 0)) + 1)) == NULL)
err(1, "Out of memory");
if ((cp = yanklogin(detract(nsto, 0), nbuf)) != NULL)
(void)savemail(expand(nbuf), mtf);
free(nbuf);
free(nsto);
} else if ((cp = value("record")) != NULL)
(void)savemail(expand(cp), mtf);
/*
* Fork, set up the temporary mail file as standard
* input for "mail", and exec with the user list we generated
* far above.
*/
pid = fork();
if (pid == -1) {
warn("fork");
savedeadletter(mtf);
goto out;
}
if (pid == 0) {
sigset_t nset;
(void)sigemptyset(&nset);
(void)sigaddset(&nset, SIGHUP);
(void)sigaddset(&nset, SIGINT);
(void)sigaddset(&nset, SIGQUIT);
(void)sigaddset(&nset, SIGTSTP);
(void)sigaddset(&nset, SIGTTIN);
(void)sigaddset(&nset, SIGTTOU);
prepare_child(&nset, fileno(mtf), -1);
if ((cp = value("sendmail")) != NULL)
cp = expand(cp);
else
cp = _PATH_SENDMAIL;
execv(cp, namelist);
warn("%s", cp);
_exit(1);
}
if (value("verbose") != NULL)
(void)wait_child(pid);
else
free_child(pid);
out:
(void)Fclose(mtf);
}
/*
* Fix the header by glopping all of the expanded names from
* the distribution list into the appropriate fields.
*/
void
fixhead(hp, tolist)
struct header *hp;
struct name *tolist;
{
struct name *np;
hp->h_to = NULL;
hp->h_cc = NULL;
hp->h_bcc = NULL;
for (np = tolist; np != NULL; np = np->n_flink) {
/* Don't copy deleted addresses to the header */
if (np->n_type & GDEL)
continue;
if ((np->n_type & GMASK) == GTO)
hp->h_to =
cat(hp->h_to, nalloc(np->n_name, np->n_type));
else if ((np->n_type & GMASK) == GCC)
hp->h_cc =
cat(hp->h_cc, nalloc(np->n_name, np->n_type));
else if ((np->n_type & GMASK) == GBCC)
hp->h_bcc =
cat(hp->h_bcc, nalloc(np->n_name, np->n_type));
}
}
/*
* Prepend a header in front of the collected stuff
* and return the new file.
*/
FILE *
infix(hp, fi)
struct header *hp;
FILE *fi;
{
FILE *nfo, *nfi;
int c, fd;
char tempname[PATHSIZE];
(void)snprintf(tempname, sizeof(tempname),
"%s/mail.RsXXXXXXXXXX", tmpdir);
if ((fd = mkstemp(tempname)) == -1 ||
(nfo = Fdopen(fd, "w")) == NULL) {
warn("%s", tempname);
return (fi);
}
if ((nfi = Fopen(tempname, "r")) == NULL) {
warn("%s", tempname);
(void)Fclose(nfo);
(void)rm(tempname);
return (fi);
}
(void)rm(tempname);
(void)puthead(hp, nfo,
GTO|GSUBJECT|GCC|GBCC|GREPLYTO|GINREPLYTO|GNL|GCOMMA);
c = getc(fi);
while (c != EOF) {
(void)putc(c, nfo);
c = getc(fi);
}
if (ferror(fi)) {
warnx("read");
rewind(fi);
return (fi);
}
(void)fflush(nfo);
if (ferror(nfo)) {
warn("%s", tempname);
(void)Fclose(nfo);
(void)Fclose(nfi);
rewind(fi);
return (fi);
}
(void)Fclose(nfo);
(void)Fclose(fi);
rewind(nfi);
return (nfi);
}
/*
* Dump the to, subject, cc header on the
* passed file buffer.
*/
int
puthead(hp, fo, w)
struct header *hp;
FILE *fo;
int w;
{
int gotcha;
gotcha = 0;
if (hp->h_to != NULL && w & GTO)
fmt("To:", hp->h_to, fo, w&GCOMMA), gotcha++;
if (hp->h_subject != NULL && w & GSUBJECT)
fprintf(fo, "Subject: %s\n", hp->h_subject), gotcha++;
if (hp->h_cc != NULL && w & GCC)
fmt("Cc:", hp->h_cc, fo, w&GCOMMA), gotcha++;
if (hp->h_bcc != NULL && w & GBCC)
fmt("Bcc:", hp->h_bcc, fo, w&GCOMMA), gotcha++;
if (hp->h_replyto != NULL && w & GREPLYTO)
fprintf(fo, "Reply-To: %s\n", hp->h_replyto), gotcha++;
if (hp->h_inreplyto != NULL && w & GINREPLYTO)
fprintf(fo, "In-Reply-To: <%s>\n", hp->h_inreplyto), gotcha++;
if (gotcha && w & GNL)
(void)putc('\n', fo);
return (0);
}
/*
* Format the given header line to not exceed 72 characters.
*/
void
fmt(str, np, fo, comma)
const char *str;
struct name *np;
FILE *fo;
int comma;
{
int col, len;
comma = comma ? 1 : 0;
col = strlen(str);
if (col)
fputs(str, fo);
for (; np != NULL; np = np->n_flink) {
if (np->n_flink == NULL)
comma = 0;
len = strlen(np->n_name);
col++; /* for the space */
if (col + len + comma > 72 && col > 4) {
fprintf(fo, "\n ");
col = 4;
} else
fprintf(fo, " ");
fputs(np->n_name, fo);
if (comma)
fprintf(fo, ",");
col += len + comma;
}
fprintf(fo, "\n");
}
/*
* Save the outgoing mail on the passed file.
*/
/*ARGSUSED*/
int
savemail(name, fi)
char name[];
FILE *fi;
{
FILE *fo;
char buf[BUFSIZ];
int i;
time_t now;
if ((fo = Fopen(name, "a")) == NULL) {
warn("%s", name);
return (-1);
}
(void)time(&now);
fprintf(fo, "From %s %s", myname, ctime(&now));
while ((i = fread(buf, 1, sizeof(buf), fi)) > 0)
(void)fwrite(buf, 1, i, fo);
fprintf(fo, "\n");
(void)fflush(fo);
if (ferror(fo))
warn("%s", name);
(void)Fclose(fo);
rewind(fi);
return (0);
}