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/*
* sensible-mda.c
* Copyright (c) 1998, Johnie Ingram.
* Copyright (c) 1998, Richard Nelson <cowboy@debian.org>.
* Time-stamp: <1998/08/13 10:00:00 cowboy>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <unistd.h>
#include <pwd.h>
#include <sys/types.h>
// TODO: declare -x TCPREMOTEIP="$3"
#define PROCMAIL "/usr/bin/procmail"
#define DELIVER "/usr/bin/deliver"
#define PROCMAILRCS "/etc/procmailrcs/"
static struct stat MDA_stat;
static struct stat procmailrc_stat;
static int done = 1;
static struct passwd* passwd_entry;
int
main (int argc, char *argv[])
{
char *procmailrc;
if (!stat(PROCMAIL, &MDA_stat)) {
if (MDA_stat.st_mode & S_ISUID) {
procmailrc=malloc(strlen(PROCMAILRCS)+strlen(argv[2])+1);
sprintf(procmailrc,"%s%s",PROCMAILRCS,argv[2]);
passwd_entry=getpwnam(argv[2]);
if (passwd_entry && !stat(procmailrc, &procmailrc_stat) && procmailrc_stat.st_uid==passwd_entry->pw_uid) {
done = 0;
execl (PROCMAIL, PROCMAIL, "-t", "-f",
argv[1], "-m", procmailrc, NULL);
} else {
done = 0;
execl (PROCMAIL, PROCMAIL, "-t", "-f",
argv[1], "-d", argv[2], NULL);
}
}
else
fprintf(stderr, "Ack!?! %s is not setuid!\n", PROCMAIL);
}
if (done && !stat(DELIVER, &MDA_stat)) {
if (MDA_stat.st_mode & S_ISUID) {
done = 0;
execl (DELIVER, DELIVER, "-r", argv[1], argv[2], NULL);
}
else
fprintf(stderr, "Ack!?! %s is not setuid!\n", DELIVER);
}
fprintf (stderr, "Huh? Neither %s nor %s was found (or was suid)!\n",
PROCMAIL, DELIVER);
return (75);
}
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