# some library functions for phpbb3 maintainer scripts
# copyright 2010 J.M. Roth <jmroth@iip.lu>

get_webserver_configdata () {
    local package=$1
    local webserver=$2
    local prio=$3

    case "$webserver" in
        "lighttpd" )
            confdir=conf-available
            wfile=${prio}-$package.conf
            ;;
        "apache2" )
            confdir=conf-available
            wfile=$package.conf
            ;;
        * )
            echo "$0 $@: webserver $webserver is not supported." 1>&2
            return 1
            ;;
    esac
}

# picked up from https://wiki.debian.org/Apache/PackagingFor24#Making_web_applications_compatible_to_both.2C_Apache_2.2_and_2.4
COMMON_STATE=$(dpkg-query -f '${Status}' -W 'apache2.2-common' 2>/dev/null | awk '{print $3}' || true)
APACHE2_MAINTSCRIPT_METHOD=$1
APACHE2_MAINTSCRIPT_ARGUMENT=$2

install_webserver_config () {
    local package=$1
    local webserver=$2
    local prio=$3

    get_webserver_configdata $@ || return 1
    # yields: $confdir, $wfile

    if [ -d /etc/$webserver/$confdir ] && [ ! -L /etc/$webserver/$confdir/$wfile ] ; then
        if [ ! -x /usr/sbin/$webserver ] ; then
            echo "$0 $@: webserver $webserver not found, skipping" 1>&2
        else
            ln -s ../../$package/$webserver.conf /etc/$webserver/$confdir/$wfile
            if [ "$webserver" = "lighttpd" ] ; then
                lighty-enable-mod $package >/dev/null
            elif [ "$webserver" = "apache2" ] ; then
		if [ -e /usr/share/apache2/apache2-maintscript-helper ] ; then
		    . /usr/share/apache2/apache2-maintscript-helper
		    apache2_invoke enconf $package
		elif [ "$COMMON_STATE" = "installed" ] || [ "$COMMON_STATE" = "unpacked" ] ; then
		    [ -d /etc/apache2/conf.d/ ] && [ ! -L /etc/apache2/conf.d/$package.conf ] && ln -s ../conf-available/$package.conf /etc/apache2/conf.d/$package.conf
		fi
            fi
        fi
    fi
}

_purge_webserver_config () {
    local package=$1
    local webserver=$2
    local prio=$3

    get_webserver_configdata $@ || return 0
    # yields: $confdir, $wfile

    if [ -d /etc/$webserver/$confdir ] && [ -L /etc/$webserver/$confdir/$wfile ] ; then
        if [ ! -x /usr/sbin/$webserver ] ; then
            echo "$0 $@: webserver $webserver not installed, skipping" 1>&2
        else
            if [ "$webserver" = "lighttpd" ] ; then
                lighty-disable-mod $package >/dev/null
            elif [ "$webserver" = "apache2" ] ; then
		if [ -e /usr/share/apache2/apache2-maintscript-helper ] ; then
		    . /usr/share/apache2/apache2-maintscript-helper
		    apache2_invoke disconf $package
		elif [ "$COMMON_STATE" = "installed" ] || [ "$COMMON_STATE" = "unpacked" ] ; then
		    [ -L /etc/apache2/conf.d/$package.conf ] && rm /etc/apache2/conf.d/$package.conf
		fi
            fi
            rm /etc/$webserver/$confdir/$wfile
        fi
    fi
}

purge_webserver_config () {
    local package=$1
    local webserver=$2
    local prio=$3

    case "$webserver" in
        "all" )
            db_metaget $package/httpd Choices
            for w in $RET ; do
                _purge_webserver_config $package ${w%,} $prio
            done
            ;;
        * )
            _purge_webserver_config $@
            ;;
    esac
}

_reload_webserver () {
    local webserver=$1

    if [ -x /usr/sbin/$webserver ]; then
	# Redirection of fd 3 is needed because Debconf uses it and it might
	# be inherited by webserver. See bug #446324.
        if [ -x /usr/sbin/invoke-rc.d ]; then
            invoke-rc.d $webserver reload 3>/dev/null || true
        else
            /etc/init.d/$webserver reload 3>/dev/null || true
        fi
        echo
    fi
}

reload_webserver () {
    local package=$1
    local webserver=$2

    case "$webserver" in
        "all" )
            db_metaget $package/httpd Choices
            for w in $RET ; do
                _reload_webserver ${w%,}
            done
            ;;
        * )
            _reload_webserver ${webserver%,}
            ;;
    esac
}