postinst is in privoxy 3.0.21-2.
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 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 | #! /bin/sh
# postinst script for privoxy
#
# see: dh_installdeb(1)
set -e
# summary of how this script can be called:
#        * <postinst> `configure' <most-recently-configured-version>
#        * <old-postinst> `abort-upgrade' <new version>
#        * <conflictor's-postinst> `abort-remove' `in-favour' <package>
#          <new-version>
#        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
#          <failed-install-package> <version> `removing'
#          <conflicting-package> <version>
# for details, see http://www.debian.org/doc/debian-policy/ or
# the debian-policy package
#
# quoting from the policy:
#     Any necessary prompting should almost always be confined to the
#     post-installation script, and should be protected with a conditional
#     so that unnecessary prompting doesn't happen if a package's
#     installation fails and the `postinst' is called with `abort-upgrade',
#     `abort-remove' or `abort-deconfigure'.
CONFDIR=/etc/privoxy
CONFIG=$CONFDIR/config
case "$1" in
    configure)
        adduser --quiet --system --home $CONFDIR --no-create-home \
	    --ingroup nogroup --disabled-password privoxy
        chown -R privoxy:adm /var/log/privoxy
        chmod 750 /var/log/privoxy
	chown privoxy $CONFDIR/user.action $CONFDIR/trust
	[ -f $CONFDIR/match-all.action ] \
	    && chown privoxy $CONFDIR/match-all.action
	if [ "x$2" != "x" ] && dpkg --compare-versions "$2" lt "3.0.4"
	then
	    # Upgrading from a 3.0.3* version
	    chown root $CONFDIR/default.action
	fi
	if [ "x$2" != "x" ] && dpkg --compare-versions "$2" lt "3.0.7" \
	    && grep -q '^actionsfile [a-z]*[[:space:]]*#.*$' $CONFIG
	then
	    # Upgrading from version before 3.0.7 where the user kept his old 
	    # (modified) config file:
	    # Try to change   "actionsfile foo"  to  "actionsfile foo.action"
	    # as needed in 3.0.7:
	    sed 's/^actionsfile \([a-z]*\)\([ 	]*\#\)/actionsfile \1.action\2/' \
		-i.bak $CONFIG
	fi
	if [ "x$2" != "x" ] && dpkg --compare-versions "$2" lt "3.0.11"
	then
	    # Upgrading from a version before 3.0.11
	    # Try to work around problems with missing action files
	    if grep -q '^actionsfile.*global.action' $CONFIG
	    then
		if [ -e $CONFDIR/global.action ]
		then
		    mv $CONFDIR/global.action $CONFDIR/global.action.dpkg-old
		fi
		(cd $CONFDIR; ln -s match-all.action global.action)
	    fi
	    if grep -q '^actionsfile.*standard.action' $CONFIG
	    then
		if [ -e $CONFDIR/standard.action ]
		then
		    if ! grep -q migration $CONFDIR/standard.action
		    then
			mv $CONFDIR/standard.action \
			    $CONFDIR/standard.action.dpkg-old
			echo "# migration file. Not used in 3.0.11 and newer" \
			    > $CONFDIR/standard.action
		    fi
		else
		    echo "# migration file. Not used in 3.0.11 and newer" \
			> $CONFDIR/standard.action
		fi
	    fi
	fi
    ;;
    abort-upgrade|abort-remove|abort-deconfigure)
    ;;
    *)
        echo "postinst called with unknown argument \`$1'" >&2
        exit 1
    ;;
esac
# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.
# Automatically added by dh_systemd_enable
# This will only remove masks created by d-s-h on package removal.
deb-systemd-helper unmask privoxy.service >/dev/null || true
# was-enabled defaults to true, so new installations run enable.
if deb-systemd-helper --quiet was-enabled privoxy.service; then
	# Enables the unit on first installation, creates new
	# symlinks on upgrades if the unit file has changed.
	deb-systemd-helper enable privoxy.service >/dev/null || true
else
	# Update the statefile to add new symlinks (if any), which need to be
	# cleaned up on purge. Also remove old symlinks.
	deb-systemd-helper update-state privoxy.service >/dev/null || true
fi
# End automatically added section
# Automatically added by dh_installinit
if [ -x "/etc/init.d/privoxy" ] || [ -e "/etc/init/privoxy.conf" ]; then
	if [ ! -e "/etc/init/privoxy.conf" ]; then
		update-rc.d privoxy defaults >/dev/null
	fi
	invoke-rc.d privoxy start || exit $?
fi
# End automatically added section
exit 0
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