#!/bin/bash

#
# webd httpd server
# Copyright (c) 2006 Target Creation Ltd
#

dynamic_request ()
{
	export QUERY_STRING="$query"
	echo -e "HTTP/1.1 200 OK\r"
	"$filename"
	echo -e "\r"
	exit 0
}

static_request()
{
	echo -e "HTTP/1.1 200 OK\r"
	echo -e "Content-Type: `/usr/bin/file -bi \"$filename\"`\r"

	echo -e "\r"
	cat "$filename"
	echo -e "\r"
}

dir_list()
{
	echo -e "HTTP/1.1 200 OK\r"
	echo -e "Content-Type: text/html;charset=UTF-8\r"
	echo -e "\r"
	tmpl_header;
	echo -e "<h1>Listing of $url</h1>\r"
	echo -e "<pre>Details								Name</pre>\r"
	echo -e "<pre>"

	( cd "$filename"
		for f in `ls`; do
			#desc=`ls -ld "$f"`
			desc=`ls -ld "$f"`
			desc="${desc% $f}"
			href="${url%/}/$f"

			echo -e "$desc			<a href=\"$f\">$f</a>"
		done
	)

	echo "</pre>"
	echo -e "\r"
	echo -e "\r"
	tmpl_footer;
	echo -e "\r"
}

404_page ()
{
	echo -e "HTTP/1.1 404 Not Found\r"
	echo -e "Content-Type: text/html;charset=UTF-8\r"
	echo -e "\r"
	tmpl_header;
	echo -e "<h1>404: Resource Not Found</h1>\r"
	echo -e "The resource you requested could not be found on this server. Please \r"
	echo -e "ensure you typed the address/url correctly and try again.\r"
	tmpl_footer;
	echo -e "\r"
}

tmpl_header ()
{
	cat "/var/www/webd/header.html"
}

tmpl_footer ()
{
	cat "/var/www/webd/footer.html"
}

base=/var/www

read request

while /bin/true; do
	read header
	[ "$header" == $'\r' ] && break;
done

url="${request#GET }"
url="${url% HTTP/*}"
query="${url#*\?}"
url="${url%%\?*}"
filename="$base$url"

if [ "$query" != "$url" -a -x "$filename" ]; then
	dynamic_request;
fi

if [ -f "$filename" ]; then
	if [ -x "$filename" ]; then
		dynamic_request;
	fi

	static_request;
else
	if [ -d "$filename" ]; then
		if [ -f "$filename/index.pl" ]; then
			filename="${filename}/index.pl"
			if [ -x "$filename" ]; then
				dynamic_request;
			fi

			static_request;
		else
			dir_list;
		fi
	else
		404_page;
	fi
fi