preinst is in squid 3.5.27-1ubuntu1.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 | #! /bin/sh
set -e
#
# If the squid3 package was being used previously...
#
if test -d /etc/squid3 ; then
if test ! -d /etc/squid; then
mkdir /etc/squid
fi
#
# Remove obsolete MSNT helper config
#
dpkg-maintscript-helper rm_conffile \
/etc/squid3/msntauth.conf 3.5.4-1~ squid3 -- "$@"
#
# Move old squid3 config files into position
#
dpkg-maintscript-helper mv_conffile \
/etc/squid3/squid.conf /etc/squid/squid.conf 3.5.4-1~ squid3 -- "$@"
dpkg-maintscript-helper mv_conffile \
/etc/squid3/errorpage.css /etc/squid/errorpage.css 3.5.4-1~ squid3 -- "$@"
fi
case "$1" in
upgrade|install)
#
# If the squid (2.7) package was being used previously protect
# the squid.conf file, which was not tracked as a conffile.
# Use '< 2.8' version to catch backports and security versions.
#
# Except, when a squid3 package was used we do want the
# debconf questions to appear as the packages get merged.
#
if dpkg --compare-versions "$2" lt '2.8' && [ ! -f /etc/squid3/squid.conf ] && [ -f /etc/squid/squid.conf ];then
echo "Preserving old /etc/squid/squid.conf"
mv /etc/squid/squid.conf /etc/squid/squid.conf.pre3.5_upgrade
fi
;;
abort-upgrade)
exit 0
;;
esac
#
# Add the "proxy" user/group to /etc/passwd if needed.
#
if ! grep -q "^proxy:" /etc/passwd
then
#
# Let's hope that this works; if /var/spool/squid is
# already present this fails :(
#
adduser --system --home /var/spool/squid --group proxy
#
# Change the shell so that cron jobs will work.
# (They run as root now, but you can never know).
#
chsh -s /bin/sh proxy
fi
disable_profile() {
APP_CONFFILE="/etc/apparmor.d/usr.sbin.squid"
APP_DISABLE="/etc/apparmor.d/disable/usr.sbin.squid"
# Create a symlink to the yet-to-be-unpacked profile
if [ ! -e "$APP_CONFFILE" ]; then
mkdir -p `dirname $APP_DISABLE` 2>/dev/null || true
ln -sf $APP_CONFFILE $APP_DISABLE
fi
}
if [ "$1" = "install" ]; then
# Disable AppArmor profile on install
disable_profile
fi
# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.
exit 0
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