#!/bin/bash
#
# install.sh
#
# Copyright (C) 2011-2012 Cesnet z.s.p.o
#
# Use of this source is governed by a BSD-style license, see LICENSE file.


VERSION="2.1"

#-------------------------------------------------------------------------------
#				FUNCTIONS
#-------------------------------------------------------------------------------
usage()
{
	echo "Usage: `basename $0` [-d <directory>] [-k <ssl_key_file>] [-c <ssl_cert_file>] [-a <ssl_ca_file>] [-hV]"
	echo "-d <directory>            installation directory (default: /opt)"
	echo "-k <ssl_key_file>         path to SSL certificate key file"
	echo "-c <ssl_cert_file>        path to SSL certificate file"
	echo "-a <ssl_ca_file>          path to CA certificate file"
	echo "-h                        print this help"
	echo "-V                        print script version number and exit"
	echo
	echo "Example: # ./`basename $0` -d /opt -k /etc/ssl/private/server.key -c /etc/ssl/certs/server.pem -a /etc/ssl/certs/tcs-ca-bundle.pem"
	echo
	echo "Note: You must be root for running this script."
	echo "      For more information about installation process, see README file (section Installation)."
	echo
	exit 0
}


version()
{
	echo "`basename ${0}` - current version is $VERSION"
	exit 0
}


err()
{
	echo "FAILED!"
	cat $err
	rm -rf $err
	echo
	echo "Installation of $package_version package FAILED!!!"
	exit 1
}


err_clean()
{
	echo "FAILED!"
	echo " -> Uninstalling server package ... OK"
	rm -rf $server_path > /dev/null 2>&1
	cat $err
	rm -rf $err
	echo
	echo "Installation of $package_version package FAILED!!!"
	exit 1
}


root_chck()
{
	if [ $UID -ne 0 ]; then
		echo "You must be root for running this script!"
		exit 1
	fi
}


params_chck()
{
	if [ -z $prefix ]; then
		prefix=/opt
		echo "Warning: parameter -d <directory> is not set - default installation directory is ${prefix}!"
	fi
	if [ -z $key ]; then
		echo "Parameter -k <ssl_key_file> is not set!"
		exit 1
	fi
	if [ -z $cert ]; then
		echo "Parameter -c <ssl_cert_file> is not set!"
		exit 1
	fi
	if [ -z $ca_file ]; then
		echo "Parameter -a <ssl_ca_file> is not set!"
		exit 1
	fi
}


old_package_chck()
{
	old_package_version_file="${etc}/package_version"
	if [ -f $old_package_version_file ]; then
		old_package_version=`cat $old_package_version_file`
		echo "Sorry, but $old_package_version package is installed!"
		echo "For update of warden server package please use update.sh"
		exit 1
	fi
}


perl_chck()
{
	echo -n "Checking Perl interpreter ... "
	if which perl 1> /dev/null; then
		echo "OK"
	else
		echo "FAILED!"
		echo "Error: Perl interpreter is not installed!"
		exit 1
	fi
}

modules_chck()
{
	for module in ${modules[@]};
	do
		echo -n "Checking $module module ... "
		if perl -e "use $module" 2> $err; then
			echo "OK"
		else
			err
		fi
	done
}


make_warden_dir()
{
	echo -n "Creating Warden server directory ... "
	test -d $prefix || mkdir -p $prefix
	if cp -R ${dirname}/warden-server $prefix 2> $err; then
		echo "OK"
	else
		err_clean
	fi

	files=(AUTHORS CHANGELOG INSTALL LICENSE README)
	for file in ${files[@]};
	do
		cp ${dirname}/$file ${server_path}/doc
	done
	cp ${dirname}/uninstall.sh $server_path
}


make_client_conf()
{
	echo -n "Creating client configuration file ... "
	echo "#
# warden-client.conf - configuration file for the warden sender/receiver client
#

#-------------------------------------------------------------------------------
# URI - URI address of Warden server
#-------------------------------------------------------------------------------
\$URI = \"https://${hostname}:443/Warden\";

#-------------------------------------------------------------------------------
# SSL_KEY_FILE - path to client SSL certificate key file
#-------------------------------------------------------------------------------
\$SSL_KEY_FILE = \"${key}\";

#-------------------------------------------------------------------------------
# SSL_CERT_FILE - path to client SSL certificate file
#-------------------------------------------------------------------------------
\$SSL_CERT_FILE = \"${cert}\";

#-------------------------------------------------------------------------------
# SSL_CA_FILE - path to CA certificate file
#-------------------------------------------------------------------------------
\$SSL_CA_FILE = \"${ca_file}\";
" > $client_conf 2> $err; ret_val=`echo $?`

	if [ $ret_val -eq 0 ]; then
		echo "OK"
	else
		err_clean
	fi
}


make_server_conf()
{
	echo -n "Creating server configuration file ... "
	echo "# 
# warden-server.conf - configuration file for Warden server
#

#-------------------------------------------------------------------------------
# BASEDIR - base directory of Warden server
#-------------------------------------------------------------------------------
\$BASEDIR = \'${server_path}\';

#-------------------------------------------------------------------------------
# SYSLOG - enable/disable syslog logging
#-------------------------------------------------------------------------------
\$SYSLOG = 1;

#-------------------------------------------------------------------------------
# SYSLOG_VERBOSE - enable/disable logging in verbose mode (stack info added)
#-------------------------------------------------------------------------------
\$SYSLOG_VERBOSE = 1;

#-------------------------------------------------------------------------------
# SYSLOG_FACILITY - syslog facility
#-------------------------------------------------------------------------------
\$YSLOG_FACILITY = \'local7\';

#-------------------------------------------------------------------------------
# DB_NAME - MySQL database name of Warden server
#-------------------------------------------------------------------------------
\$DB_NAME = \'warden\';

#-------------------------------------------------------------------------------
# DB_USER - MySQL database user of Warden server
#-------------------------------------------------------------------------------
\$DB_USER = \'username\';

#-------------------------------------------------------------------------------
# DB_PASS - MySQL database password of Warden server
#-------------------------------------------------------------------------------
\$DB_PASS = \'\';

#-------------------------------------------------------------------------------
# DB_HOST - MySQL database host
#-------------------------------------------------------------------------------
\$DB_HOST = \'localhost\';

#-------------------------------------------------------------------------------
# MAX_EVENTS_LIMIT - server limit of maximum number of events that can be
#                    delivered to one client in one batch
#-------------------------------------------------------------------------------
\$MAX_EVENTS_LIMIT = \'1000000\';

#-------------------------------------------------------------------------------
# VALID_STRINGS - validation hash containing allowed event attributes
#-------------------------------------------------------------------------------
\%VALID_STRINGS = ( 
  \'type\' => [\'portscan\', \'bruteforce\', \'probe\', \'spam\', \'phishing\', \'botnet_c_c\', \'dos\', \'malware\', \'copyright\', \'webattack\', \'test\', \'other\', \'_any_\'],
  \'source_type' => ['IP', 'URL', 'Reply-To:']
);
" > $server_conf 2> $err; ret_val=`echo $?`

	if [ $ret_val -eq 0 ]; then
		echo "OK"
	else
		err_clean
	fi
}


changeServerPath()
{
	echo "Update server path ...";
	for file in `ls -1 $bin`
	do
		echo "- update server path: ${bin}/$file"
		perl -pi -e "s#/opt#${prefix}#" ${bin}/$file
	done

	echo "- update server path: $apache_conf"
	perl -pi -e "s#/opt#${prefix}#" $apache_conf

	echo "- update server path: ${lib}/Warden.pm"
	perl -pi -e "s#/opt#${prefix}#" ${lib}/Warden.pm
	
}


updateCertsPath()
{

	echo "- update certs path: $apache_conf"
	perl -pi -e "s#server-cert.pem#${cert}#" $apache_conf
	perl -pi -e "s#server-key.pem#${key}#" $apache_conf
	perl -pi -e "s#ca-cert.pem#${ca_file}#" $apache_conf
}


create_symlinks()
{
	echo "Creating symbolic links ..."
	for file in `ls -1 $bin`
	do
		echo "- making symlink: ${local_bin}/$file -> ${bin}/$file"
		ln -s ${bin}/$file ${local_bin}/$file
	done
}


#-------------------------------------------------------------------------------
#				MAIN
#-------------------------------------------------------------------------------

# list of used Perl modules
modules=(SOAP::Lite SOAP::Transport::HTTP DBI DBD::mysql Format::Human::Bytes Sys::Syslog File::Basename Net::CIDR::Lite DateTime Getopt::Std Switch IO::Socket::SSL MIME::Base64 Crypt::X509 Carp)

# read input
while getopts "d:k:c:a:Vh" options; do
	case $options in
		d ) prefix=$OPTARG;;
		k ) key=$OPTARG;;
		c ) cert=$OPTARG;;
		a ) ca_file=$OPTARG;;
		h ) usage;;
		V ) version;;
		* ) usage;;
	esac
done

# root test
root_chck

# params test
params_chck

# create variables
dirname=`dirname $0`
hostname=`hostname`
key_file=`basename $key`
cert_file=`basename $cert`
package_version=`cat ${dirname}/warden-server/etc/package_version`

[[ $prefix == */ ]] && prefix="${prefix%?}" # remove last char (slash) from prefix
server_path="${prefix}/warden-server"
bin="${server_path}/bin"
local_bin="/usr/local/bin"
etc="${server_path}/etc"
client_conf="${etc}/warden-client.conf"
server_conf="${etc}/warden-server.conf"
apache_conf="${etc}/warden-apache.conf"
var="${server_path}/var"
lib="${server_path}/lib"
err="/tmp/warden-err"

# check if warden-server is installed
old_package_chck

echo
echo "------------------------- Dependencies check-in -------------------------"

# Perl interpreter test
perl_chck

# Perl modules test
modules_chck

echo
echo "------------------------- Installation process --------------------------"

# make warden client directory
make_warden_dir

# create client configuration file
make_client_conf

# create server configuration file
make_server_conf

#update paths in utilities
changeServerPath

#update paths in apachefile
updateCertsPath

# crate symlinks from warden server bin directory to /usr/local/bin
create_symlinks

echo
echo "Please check client configuration file in ${client_conf}!"
echo "Please check server configuration file in ${server_conf}!"
echo "Please check Apache configuration file in ${apache_conf}!"
echo
echo "Warden server directory: $server_path"
echo
echo "Installation of $package_version package was SUCCESSFUL!!!"

# cleanup section
rm -rf $err

exit 0
