#!/bin/sh
################################################################################
# WeBWorK Online Homework Delivery System
# Copyright © 2000-2007 The WeBWorK Project, http://openwebwork.sf.net/
# $CVSHeader: webwork2/bin/wwapachectl.dist,v 1.17 2006/05/31 18:25:18 sh002i Exp $
# 
# This program is free software; you can redistribute it and/or modify it under
# the terms of either: (a) the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any later
# version, or (b) the "Artistic License" which comes with this package.
# 
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.  See either the GNU General Public License or the
# Artistic License for more details.
################################################################################

# This is a wrapper for the apachectl utility suitable for use when doing
# development on the WeBWorK 2 system. This setup allows each developer to run
# an independent Apache server under their own UID, using their own working copy
# of the WeBWorK code.

################################################################################
# Configuration
################################################################################

# The path to the Apache binary
HTTPD=/usr/local/sbin/httpd

# The path to your personal webwork2 directory
WEBWORKROOT=$HOME/webwork2

# If you're sharing files with systems being run by other users, uncomment this
#umask 2

# if you want to use SSL, uncomment this line
#SSL=-DSSL

# Change these only if you need to customize the locations
PID=$WEBWORKROOT/logs/httpd.pid
CONFIG_GLOBAL=$WEBWORKROOT/conf/global.conf
CONFIG_DATABASE=$WEBWORKROOT/conf/database.conf
CONFIG_DEVEL=$WEBWORKROOT/conf/devel.apache-config
CONFIG_DEVEL_SITE=$WEBWORKROOT/conf/devel-site.apache-config
CONFIG_WEBWORK=$WEBWORKROOT/conf/webwork.apache-config
CONFIG_THISFILE=$WEBWORKROOT/bin/wwapachectl

################################################################################
# Implementation
################################################################################

usage() {
	echo "$0 { start | stop | restart | graceful | configtest }"
}

checkpid() {
	if [ ! -e $PID ]; then
		echo "$PID: not found. (Perhaps the server is not running?)"
		exit
	fi
}

checknopid() {
	if [ -e $PID ]; then
		echo "$PID: exists. (Perhaps the server is already running?)"
		exit
	fi
}

checkconfs() {
	for conf in "$@"; do
		checkconf "$conf"
	done
}

checkconf() {
	if [ $1.dist -nt $1 ]; then
		echo "WARNING: "`basename $1.dist`" is newer than "`basename $1`": UPDATE "`basename $1`"!"
	fi
}

case $1 in
	start)
		checknopid
		checkconfs "$CONFIG_GLOBAL" "$CONFIG_DATABASE" "$CONFIG_DEVEL" "$CONFIG_DEVEL_SITE" "$CONFIG_WEBWORK" "$CONFIG_THISFILE"
		mkdir -pv "$WEBWORKROOT"/run # hack for httpd.mm
		"$HTTPD" -f "$CONFIG_DEVEL" -d "$WEBWORKROOT" "$SSL"
		;;
	stop)
		checkpid
		kill -TERM `cat "$PID"`
		;;
	restart)
		checkpid
		checkconfs "$CONFIG_GLOBAL" "$CONFIG_DATABASE" "$CONFIG_DEVEL" "$CONFIG_DEVEL_SITE" "$CONFIG_WEBWORK" "$CONFIG_THISFILE"
		kill -HUP `cat "$PID"`
		;;
	graceful)
		checkpid
		checkconfs "$CONFIG_GLOBAL" "$CONFIG_DATABASE" "$CONFIG_DEVEL" "$CONFIG_DEVEL_SITE" "$CONFIG_WEBWORK" "$CONFIG_THISFILE"
		kill -USR1 `cat "$PID"`
		;;
	configtest)
		"$HTTPD" -t -f "$CONFIG_DEVEL" -d "$WEBWORKROOT" "$SSL"
		;;
	*)
		usage
		;;
esac