#!/bin/sh

set -e

. /usr/share/debconf/confmodule


### Variables
VER='0.7'

# Folders
J_INSTALL_DIR=/usr/lib/jvm/java-7-oracle/jre/lib/security
OLDDIR=/usr/lib/oracle-jdk7-installer-unpackdir
NEWDIR=/var/cache/oracle-jdk7-installer

SHA256SUM_TGZ="7a8d790e7bd9c2f82a83baddfae765797a4a56ea603c9150c87b7cdb7800194d"
J_DIR=UnlimitedJCEPolicy
FILENAME=UnlimitedJCEPolicyJDK7.zip
PARTNER_URL=http://download.oracle.com/otn-pub/java/jce/7/$FILENAME

### Functions
fp_exit_with_error() {
	echo $1
	echo "Unlimited JCE Policy for Oracle Java 7 is NOT installed."
	db_fset oracle-java7-unlimited-jce-policy/local seen false
	exit 1
}

fp_download_and_unpack() {
	cd /var/cache/oracle-jdk7-installer

	db_get oracle-java7-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

		# 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 = 2" >> wgetrc

		# downloading jdk7
		echo "Downloading Unlimited JCE Policy for Oracle Java 7..."
		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 # end if local file

	# Removing outdated cached downloads
	echo "Removing outdated cached downloads..."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 7"
}

### Main

# Create dirs
mkdir -p /var/cache/oracle-jdk7-installer /usr/lib/jvm /usr/lib/oracle-jdk7-installer-unpackdir

fp_download_and_unpack

# Copy it to the right dir
if [ -e /usr/lib/jvm/java-7-oracle/jre/lib/security ]; then
	cp -rf $NEWDIR/$J_DIR/*.jar /usr/lib/jvm/java-7-oracle/jre/lib/security/
fi

db_fset oracle-java7-unlimited-jce-policy/local seen false

echo "Unlimited JCE Policy for Oracle Java 7 istalled"

#DEBHELPER#

exit 0

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