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#!/bin/bash
# This script is based on one written Fedor Karpelevitch for "oops"
# to reconfigure the proxy to set the upstream proxy. I have now
# modified it to also handle "Squid", since I decided to switch
# my local proxy to that instead.
UPSTREAM="$@"
#
# If several proxies are installed we try and deal to all of them
# because it's just too damn much work to figure which one has control!
#
# The proxies we know how to deal with...
PROXIES="oops squid"
RELOADACTION="force-reload"
modify_conffile() {
CONFIGURATION="$1"
shift
NEWPROXY="$@"
PROXYCOMMAND="$1"
if [ "${UPSTREAM}" != "none" ]; then
echo "${NEWPROXY}" > ${CONFIGURATION}.N
fi
grep -v "^${PROXYCOMMAND} " ${CONFIGURATION} >> ${CONFIGURATION}.N
mv ${CONFIGURATION}.N ${CONFIGURATION}
}
stopit() {
echo "Stopping ${PROXY}"
/etc/init.d/${PROXY} stop
}
startit() {
echo "Starting ${PROXY}"
/etc/init.d/${PROXY} start
}
reloadit() {
echo "Reloading ${PROXY}"
/etc/init.d/${PROXY} ${RELOADACTION}
}
redirect_oops() {
echo "Setting OOPS upstream proxy host ($UPSTREAM)"
modify_conffile /etc/oops/oops.cfg parent ${UPSTREAM}
}
redirect_squid() {
PARENT=$1
TYPE=$2
# This bit of mucking around lets us handle things in an
# appropriate way if we just have "setproxy <parent> <port>
# as we would if we switched from OOPS -> Squid...
if [ "${TYPE}" = "parent" -o "${TYPE}" = "sibling" ] ; then
shift
else
TYPE=parent
fi
PORT=${2:-"3128"}
ICP_PORT=${3:-"3130"}
OPTIONS=${4:-"default"}
echo "Setting Squid upstream proxy host (${PARENT}:${PORT})"
modify_conffile /etc/squid/squid.conf cache_peer ${PARENT} ${TYPE} ${PORT} ${ICP_PORT} ${OPTIONS}
}
for PROXY in ${PROXIES} ; do
if [ -x /usr/sbin/${PROXY} ] ; then
if [ "$UPSTREAM" = "start" ]; then
startit
elif [ "$UPSTREAM" = "stop" ]; then
stopit
else
redirect_${PROXY} ${UPSTREAM}
reloadit
fi
fi
done
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