#!/bin/sh

set -e

. /usr/share/debconf/confmodule


### Variables
VER='0.7'

# Folders
J_INSTALL_DIR=/usr/lib/jvm/java-8-oracle/jre/lib/security
OLDDIR=/usr/lib/oracle-jdk8-installer-unpackdir
NEWDIR=/var/cache/oracle-jdk8-installer

SHA256SUM_TGZ="f3020a3922efd6626c2fff45695d527f34a8020e938a49292561f18ad1320b59"
J_DIR=UnlimitedJCEPolicyJDK8
FILENAME=jce_policy-8.zip
PARTNER_URL=http://download.oracle.com/otn-pub/java/jce/8/$FILENAME


### Functions
fp_exit_with_error() {
	echo $1
	echo "Unlimited JCE Policy for Oracle Java 8."
	db_fset oracle-java8-unlimited-jce-policy/local seen false
	exit 1
}

fp_download_and_unpack() {
	cd /var/cache/oracle-jdk8-installer

	db_get oracle-java8-unlimited-jce-policy/local
	if [ -d "$RET" -a -f "$RET"/$FILENAME ]; then
		echo "Installing from local file $RET/$FILENAME"
		cp -f -p "$RET"/$FILENAME ${FILENAME}_TEMP
		mv -f ${FILENAME}_TEMP $FILENAME
	else # no local file
		# use apt proxy
		APT_PROXIES=$(apt-config shell \
		http_proxy Acquire::http::Proxy \
		https_proxy Acquire::https::Proxy \
		ftp_proxy Acquire::ftp::Proxy \
		dl_direct Acquire::http::Proxy::download.oracle.com \
		)

		[ -n "$APT_PROXIES" ] && eval export $APT_PROXIES

		if [ "$dl_direct" = "DIRECT" ]; then
			unset http_proxy
			unset https_proxy
			unset ftp_proxy
		fi

		# if /var/cache/oracle-jdk8-installer/wgetrc exists, use it for downloading java
		if [ -f /var/cache/oracle-jdk8-installer/wgetrc ]; then

			# downloading Unlimited JCE Policy for Oracle Java 8
			echo "Using wget settings from /var/cache/oracle-jdk8-installer/wgetrc"
			echo "Downloading Unlimited JCE Policy for Oracle Java 8..."
			WGETRC=wgetrc wget --continue --no-check-certificate -O $FILENAME --header "Cookie: oraclelicense=a" $PARTNER_URL \
				|| fp_exit_with_error "download failed"
			echo "Download done."

		#if it's not, use the settings below (which also creates /var/cache/oracle-jdk8-installer/wgetrc)
		else

			# setting wget options
			:> wgetrc
			echo "noclobber = off" >> wgetrc
			echo "dir_prefix = ." >> wgetrc
			echo "dirstruct = off" >> wgetrc
			echo "verbose = on" >> wgetrc
			echo "progress = dot:mega" >> wgetrc
			echo "tries = 5" >> wgetrc

			# downloading Unlimited JCE Policy for Oracle Java 8
			echo "No /var/cache/oracle-jdk8-installer/wgetrc file found."
			echo "Creating /var/cache/oracle-jdk8-installer/wgetrc and"
			echo "using default oracle-java8-installer wgetrc settings for it."
			echo "Downloading Unlimited JCE Policy for Oracle Java 8..."
			WGETRC=wgetrc wget --continue --no-check-certificate -O $FILENAME --header "Cookie: oraclelicense=a" $PARTNER_URL \
				|| fp_exit_with_error "download failed"
			echo "Download done."

		fi
	fi

	# Removing outdated cached downloads
	echo "Removing outdated cached downloads..."
	rm -vrf $J_DIR

	# Verify SHA256 checksum of (copied or downloaded) tarball
        echo "$SHA256SUM_TGZ  $FILENAME" | sha256sum -c > /dev/null 2>&1 \
		|| fp_exit_with_error "sha256sum mismatch $FILENAME"

	# Unpacking and checking the plugin
	unzip $FILENAME || fp_exit_with_error "Cannot unpack Unlimited JCE Policy for Oracle Java 8"
}

### Main

# Create dirs
mkdir -p /var/cache/oracle-jdk8-installer /usr/lib/jvm /usr/lib/oracle-jdk8-installer-unpackdir

fp_download_and_unpack

# Copy it to the right dir
if [ -e /usr/lib/jvm/java-8-oracle/jre/lib/security ]; then
	cp -rf $NEWDIR/$J_DIR/*.jar /usr/lib/jvm/java-8-oracle/jre/lib/security/
fi

db_fset oracle-java8-unlimited-jce-policy/local seen false

echo "Unlimited JCE Policy for Oracle Java 8 istalled"

#DEBHELPER#

exit 0

# vim: ts=2 sw=2