#!/bin/sh

set -e

[ "$1" = "configure" ] || exit 0
[ $DEBIAN_SCRIPT_DEBUG ] && set -vx

# Include CARNet functions
. /usr/share/carnet-tools/functions.sh

PKG="squirrelmail-change-pass-cn"
VERSION="3.0.2"
SQCONFDIR="/etc/squirrelmail"
SQCONF="$SQCONFDIR/config.php"
SQCPCONF="$SQCONFDIR/config_change_pass.php"
CPCONF="/usr/share/squirrelmail/plugins/change_pass/config.php"
need_restart=0
min_pass_changed=0


# Configure poppassd to refuse connection from all hosts
# but localhost (127.0.0.1).
#
if [ ! -f /etc/hosts.deny ]; then
    touch /etc/hosts.deny
fi
if ! egrep -q '^poppassd:' /etc/hosts.deny; then
    echo "poppassd: ALL" | cp-update "$PKG" /etc/hosts.deny
fi
if [ ! -f /etc/hosts.allow ]; then
    touch /etc/hosts.allow
fi
if ! egrep -q '^poppassd:' /etc/hosts.allow; then
    echo "poppassd: 127.0.0.1" | cp-update "$PKG" /etc/hosts.allow
fi


# First of all, do the backup.
#
done_backup=0
for cpconf_file in $SQCPCONF $CPCONF; do
    if [ -f "$cpconf_file" ] && [ ! -L "$cpconf_file" ]; then
        cp_echo "CN: Doing backup for $cpconf_file"
        cp_backup_conffile -d "/var/backups/$PKG" -p $cpconf_file
        done_backup=1
    fi
done
if [ $done_backup -eq 1 ]; then
    cp_echo "CN: Backup is located in directory: /var/backups/$PKG/"
fi


# Remove change_pass configuration files if earlier version is
# older than 3.0-1.
#
if [ "$2" ] && dpkg --compare-versions $2 lt 3.0-1; then

    cp_echo "CN: This version of change_pass plugin contains major changes."
    for cpconf_file in $SQCPCONF $CPCONF; do
        if [ -f "$cpconf_file" ] || [ -L "$cpconf_file" ]; then
            rm -f $cpconf_file
            cp_echo "CN: Removed old $cpconf_file"
        fi
    done
fi


# Check for change_pass configuration files and notify user about
# minimum password length configuration.
#
if egrep -q '^\$plugins\[[0-9]+\][\ ]*=[\ ]*'\''change_pass'\' "$SQCONF"; then
    /usr/sbin/squirrelmail-configure --remove-plugin change_pass
fi

if [ ! -f "$SQCPCONF" ]; then

    if [ -f "$CPCONF" ]; then
        cp -f "$CPCONF" "$SQCPCONF"
        cp_echo "CN: $CPCONF copied to $SQCPCONF"
    else

        # Configuration file does not exist.
        cp_echo "CN: Generating new file $SQCPCONF"
        cat > "$SQCPCONF" <<EOF
<?php
    // The default server is the configured IMAP server
    #\$poppass_server = 'localhost';

    // The default port is 106
    #\$poppass_port = 106;

    \$min_pass_length = 8;
    \$max_pass_length = 9999999;
EOF
        min_pass_changed=1
    fi
fi

# Just to be sure.
ln -sf "$SQCPCONF" "$CPCONF"

if [ $min_pass_changed -eq 1 ]; then
    cp_echo "CN: Minimum password length has been set to 8 characters."
fi


# Enable change_pass plugin in SquirrelMail config.php.
#
if ! egrep -q '^\$plugins\[[0-9]+\][\ ]*=[\ ]*'\''change_pass'\' "$SQCONF"; then
    /usr/sbin/squirrelmail-configure --install-plugin change_pass
fi


# Convert poppassd service from inetd.conf to xinetd.conf type.
# Service configuration is saved in /etc/xinetd.d/ directory.
#
if [ -x /etc/init.d/xinetd -a -d /etc/xinetd.d -a -x /usr/sbin/itox ]; then

    if egrep -q '^poppassd' /etc/inetd.conf && \
        [ ! -f /etc/xinetd.d/poppassd ]; then

        cp_echo "CN: Enabling poppassd in /etc/xinetd.d/poppassd"

        touch /etc/xinetd.d/poppassd.$$
        grep "^poppassd" /etc/inetd.conf  | \
            itox -daemon_dir /usr/sbin | cp-update "$PKG" /etc/xinetd.d/poppassd.$$
        cp_mv /etc/xinetd.d/poppassd.$$ /etc/xinetd.d/poppassd

        need_restart=1
    fi
fi


# Restart xinetd if needed.
#
if [ $need_restart -eq 1 ]; then

    if [ -x "/etc/init.d/xinetd" ]; then
        if [ -x "`which invoke-rc.d 2>/dev/null`" ]; then
            invoke-rc.d xinetd restart || exit $?
        else
            /etc/init.d/xinetd restart || exit $?
        fi
    fi
fi


# Mail root
#
cp_mail "$PKG"

#DEBHELPER#

exit 0