Linux/Mailserver/Fetchmail

• source: http://fnxweb.com/blog/2012/07/14/using-multiple-fetchmail-instances-for-instant-gratification/

#!/bin/sh
#
# Fetchmail2 init script
# Latest change: Oct 14 2012
#
### BEGIN INIT INFO
# Provides: fetchmail
# Required-Start: $network $local_fs $remote_fs $syslog
# Required-Stop: $remote_fs
# Should-Start: $mail-transport-agent exim4 $named
# Should-Stop: $mail-transport-agent exim4
# Default-Start: 2 3 4 5
# Default-Stop:
# Short-Description: init-Script for system wide fetchmail daemon
### END INIT INFO
#
# A fetchmailrc file containg hosts and passwords for all local users should be
# placed in /etc/fetchmailrc. Remember to make the /etc/fetchmailrc mode 600
# to avoid disclosing the users' passwords.
#
# This is a modified version designed to start multiple instances of fetchmail
# Creates an instance for each conf file in /etc/fetchmail.conf.d
#

set -e

# Defaults
PATH=/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/bin/fetchmail
fetchmailuser=fetchmail
fetchmailgroup=nogroup
OPTIONS="-v "

fetchmailddir="/var/run/fetchmail"
UIDL="/var/lib/fetchmail/.fetchmail-UIDL-cache"
START_DAEMON="no"

. /lib/lsb/init-functions

if [ -r /etc/default/fetchmail ]; then
. /etc/default/fetchmail
fi

if [ ! "x$START_DAEMON" = "xyes" -a ! "$1" = "status" ]; then
echo "Edit /etc/default/fetchmail to start/stop fetchmail"
exit 0
fi

test -f $DAEMON || exit 0

case "$1" in
start)
for conffile in /etc/fetchmail.conf.d/*.conf; do
bname=$(basename "$conffile")
fetchmailddirsub=$fetchmailddir/$bname
if [ ! -d "$fetchmailddirsub" ]; then
mkdir -p "$fetchmailddirsub"
chown $fetchmailuser:$fetchmailgroup "$fetchmailddirsub"
chmod 700 "$fetchmailddirsub"
fi
PIDFILE=$fetchmailddirsub/fetchmail.pid
OPTIONS2="$OPTIONS --fetchmailrc $conffile"
echo "start $conffile"
FETCHMAILHOME=$fetchmailddirsub start-stop-daemon -S -o -q -p $PIDFILE -x $DAEMON -u $fetchmailuser -c $fetchmailuser -- $OPTIONS2
done
;;
stop)
for instance in $fetchmailddir/*/*.pid; do
fetchmailddirsub=$(dirname $instance)
if [ -f "$instance" ]; then
pid=$(head -1 "$instance")
PIDFILE=$fetchmailddirsub/fetchmail.pid
FETCHMAILHOME=$fetchmailddirsub start-stop-daemon -K -o -p $instance -x $DAEMON -u $fetchmailuser
# FETCHMAILHOME=$fetchmailddirsub su $fetchmailuser -c '/usr/bin/fetchmail --pidfile "$instance" --quit' > /dev/null 2>&1
fi
rmdir $fetchmailddirsub
done
for instance in $fetchmailddir/*.pid; do
if [ -f "$instance" ]; then
su $fetchmailuser -c '/usr/bin/fetchmail --pidfile "$instance" --quit' > /dev/null 2>&1
fi
done
rm -f /var/lock/subsys/fetchmail
success "fetchmail stopped"
echo
;;
force-reload|restart)
log_begin_msg "Restarting mail retriever agent:" "fetchmail"
if ! start-stop-daemon -K -o -q -p $PIDFILE -x $DAEMON -u $USER; then
log_end_msg 1
exit 1
fi
sleep 1
if start-stop-daemon -S -q -p $PIDFILE -x $DAEMON -u $USER -c $USER -- $OPTIONS; then
log_end_msg 0
else
log_end_msg 1
exit 1
fi
;;
try-restart)
if test -e $PIDFILE ; then
pid=`cat $PIDFILE | sed -e 's/\s.*//'|head -n1`
PIDDIR=/proc/$pid
if [ -d ${PIDDIR} -a "$(readlink -f ${PIDDIR}/exe)" = "${DAEMON}" ]; then
$0 restart
exit 0
fi
fi
test -f /etc/rc`/sbin/runlevel | cut -d' ' -f2`.d/S*fetchmail* && $0 start
;;
awaken)
log_begin_msg "Awakening mail retriever agent:" "fetchmail"
if [ -s $PIDFILE ]; then
start-stop-daemon -K -s 10 -q -p $PIDFILE -x $DAEMON
log_end_msg 0
exit 0
else
log_end_msg 1
exit 1
fi
;;
debug-run)
echo "$0: Initiating debug run of system-wide fetchmail service..." 1>&2
echo "$0: script will be run in debug mode, all output to forced to" 1>&2
echo "$0: stdout. This is not enough to debug failures that only" 1>&2
echo "$0: happen in daemon mode." 1>&2
echo "$0: You might want to direct output to a file, and tail -f it." 1>&2
if [ "$2" = "strace" ]; then
echo "$0: (running debug mode under strace. See strace(1) for options)" 1>&2
echo "$0: WARNING: strace output may contain security-sensitive info, such as" 1>&2
echo "$0: passwords; please clobber them before sending the strace file to a" 1>&2
echo "$0: public bug tracking system, such as Debian's." 1>&2
fi
echo "$0: Stopping the service..." 1>&2
"$0" stop
echo "$0: exit status of service stop was: $?"
echo "$0: RUNUSER is $USER"
echo "$0: OPTIONS would be $OPTIONS"
echo "$0: Starting service in nodetach mode, hit ^C (SIGINT/intr) to finish run..." 1>&2
if [ "$2" = "strace" ] ; then
shift
shift
[ $# -ne 0 ] && echo "$0: (strace options are: -tt $@)" 1>&2
su -s /bin/sh -c "/usr/bin/strace -tt $* $DAEMON $OPTIONS --nosyslog --nodetach -v -v" $USER &1
else
su -s /bin/sh -c "$DAEMON $OPTIONS --nosyslog --nodetach -v -v" $USER &1
fi
echo "$0: End of service run. Exit status was: $?"
exit 0
;;
*)
log_warning_msg "Usage: /etc/init.d/fetchmail {start|stop|restart|force-reload|awaken|debug-run}"
log_warning_msg " start - starts system-wide fetchmail service"
log_warning_msg " stop - stops system-wide fetchmail service"
log_warning_msg " restart, force-reload - starts a new system-wide fetchmail service"
log_warning_msg " awaken - tell system-wide fetchmail to start a poll cycle immediately"
log_warning_msg " debug-run [strace [strace options...]] - start a debug run of the"
log_warning_msg " system-wide fetchmail service, optionally running it under strace"
exit 1
;;
esac

exit 0