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321 lines
9.8 KiB
Bash
321 lines
9.8 KiB
Bash
5 years ago
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#!/usr/bin/env bash
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#
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# Install JDK for Linux and Mac OS
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#
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# This script determines the most recent early-access build number,
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# downloads the JDK archive to the user home directory and extracts
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# it there.
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#
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# Exported environment variables (when sourcing this script)
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#
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# JAVA_HOME is set to the extracted JDK directory
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# PATH is prepended with ${JAVA_HOME}/bin
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#
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# (C) 2020 Christian Stein
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#
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# https://github.com/sormuras/bach/blob/master/install-jdk.sh
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#
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set -o errexit
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#set -o nounset # https://github.com/travis-ci/travis-ci/issues/5434
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#set -o xtrace
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function initialize() {
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readonly script_name="$(basename "${BASH_SOURCE[0]}")"
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readonly script_version='2020-03-17'
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dry=false
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silent=false
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verbose=false
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emit_java_home=false
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feature='ea'
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license='GPL' # Force GPLv2+CE
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os='?'
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url='?'
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workspace="${HOME}"
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target='?'
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cacerts=false
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}
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function usage() {
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cat << EOF
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Usage: ${script_name} [OPTION]...
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Download and extract latest-and-greatest JDK from https://jdk.java.net
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Version: ${script_version}
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Options:
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-h|--help Displays this help
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-d|--dry-run Activates dry-run mode
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-s|--silent Displays no output
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-e|--emit-java-home Print value of "JAVA_HOME" to stdout (ignores silent mode)
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-v|--verbose Displays verbose output
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-f|--feature 11|12|...|ea JDK feature release number, defaults to "ea"
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-o|--os linux-x64|osx-x64 Operating system identifier
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-u|--url "https://..." Use custom JDK archive (provided as .tar.gz file)
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-w|--workspace PATH Working directory defaults to \${HOME} [${HOME}]
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-t|--target PATH Target directory, defaults to first component of the tarball
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-c|--cacerts Link system CA certificates (currently only Debian/Ubuntu is supported)
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EOF
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}
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function script_exit() {
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if [[ $# -eq 1 ]]; then
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printf '%s\n' "$1"
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exit 0
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fi
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if [[ $# -eq 2 && $2 =~ ^[0-9]+$ ]]; then
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printf '%b\n' "$1"
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exit "$2"
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fi
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script_exit 'Invalid arguments passed to script_exit()!' 2
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}
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function say() {
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if [[ ${silent} != true ]]; then
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echo "$@"
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fi
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}
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function verbose() {
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if [[ ${verbose} == true ]]; then
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echo "$@"
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fi
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}
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function parse_options() {
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local option
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while [[ $# -gt 0 ]]; do
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option="$1"
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shift
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case ${option} in
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-h|-H|--help)
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usage
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exit 0
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;;
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-v|-V|--verbose)
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verbose=true
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;;
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-s|-S|--silent)
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silent=true
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verbose "Silent mode activated"
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;;
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-d|-D|--dry-run)
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dry=true
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verbose "Dry-run mode activated"
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;;
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-e|-E|--emit-java-home)
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emit_java_home=true
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verbose "Emitting JAVA_HOME"
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;;
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-f|-F|--feature)
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feature="$1"
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verbose "feature=${feature}"
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shift
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;;
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-l|-L|--license)
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# license="$1"
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say "Ignoring license option: $1 -- using GPLv2+CE by default"
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verbose "license=${license}"
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shift
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;;
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-o|-O|--os)
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os="$1"
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verbose "os=${os}"
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shift
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;;
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-u|-U|--url)
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url="$1"
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verbose "url=${url}"
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shift
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;;
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-w|-W|--workspace)
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workspace="$1"
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verbose "workspace=${workspace}"
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shift
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;;
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-t|-T|--target)
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target="$1"
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verbose "target=${target}"
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shift
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;;
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-c|-C|--cacerts)
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cacerts=true
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verbose "Linking system CA certificates"
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;;
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*)
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script_exit "Invalid argument was provided: ${option}" 2
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;;
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esac
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done
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}
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function determine_latest_jdk() {
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local number
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local curl_result
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local url
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number=15
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verbose "Determine latest JDK feature release number, starting with ${number}"
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while [[ ${number} != 99 ]]
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do
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url="https://jdk.java.net/${number}"
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curl_result=$(curl -o /dev/null --silent --head --write-out %{http_code} ${url})
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if [[ ${curl_result} -ge 400 ]]; then
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break
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fi
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verbose " Found ${url} [${curl_result}]"
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latest_jdk=${number}
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number=$[$number +1]
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done
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verbose "Latest JDK feature release number is: ${latest_jdk}"
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}
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function perform_sanity_checks() {
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if [[ ${feature} == '?' ]] || [[ ${feature} == 'ea' ]]; then
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feature=${latest_jdk}
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fi
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if [[ ${feature} -lt 9 ]] || [[ ${feature} -gt ${latest_jdk} ]]; then
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script_exit "Expected feature release number in range of 9 to ${latest_jdk}, but got: ${feature}" 3
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fi
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if [[ -d "$target" ]]; then
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script_exit "Target directory must not exist, but it does: $(du -hs '${target}')" 3
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fi
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}
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function determine_url() {
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local JAVA_NET="https://jdk.java.net/${feature}"
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local DOWNLOAD='https://download.java.net/java'
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# An official GA build or an archived feature? Use predefined URL
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case "${feature}" in
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9) url="${DOWNLOAD}/GA/jdk9/9.0.4/binaries/openjdk-9.0.4_${os}_bin.tar.gz"; return;;
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10) url="${DOWNLOAD}/GA/jdk10/10.0.2/19aef61b38124481863b1413dce1855f/13/openjdk-10.0.2_${os}_bin.tar.gz"; return;;
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11) url="${DOWNLOAD}/GA/jdk11/9/GPL/openjdk-11.0.2_${os}_bin.tar.gz"; return;;
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12) url="${DOWNLOAD}/GA/jdk12.0.2/e482c34c86bd4bf8b56c0b35558996b9/10/GPL/openjdk-12.0.2_${os}_bin.tar.gz"; return;;
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13) url="${DOWNLOAD}/GA/jdk13.0.2/d4173c853231432d94f001e99d882ca7/8/GPL/openjdk-13.0.2_${os}_bin.tar.gz"; return;;
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14) url="${DOWNLOAD}/GA/jdk14/076bab302c7b4508975440c56f6cc26a/36/GPL/openjdk-14_${os}_bin.tar.gz"; return;;
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# 15) is still available from its EA/RC location determined below
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esac
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# EA or RC build? Grab URL from HTML source of jdk.java.net/${feature}
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local candidates=$(wget --quiet --output-document - ${JAVA_NET} | grep -Eo 'href[[:space:]]*=[[:space:]]*"[^\"]+"' | grep -Eo '(http|https)://[^"]+')
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url=$(echo "${candidates}" | grep -Eo "${DOWNLOAD}/.+/jdk${feature}/.*${license}/.*jdk-${feature}.+${os}_bin(.tar.gz|.zip)$" || true)
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if [[ -z ${url} ]]; then
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script_exit "Couldn't determine a download url for ${feature}-${license} on ${os}" 1
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fi
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}
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function prepare_variables() {
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if [[ ${os} == '?' ]]; then
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if [[ "$OSTYPE" == "darwin"* ]]; then
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os='osx-x64'
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else
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os='linux-x64'
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fi
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fi
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if [[ ${url} == '?' ]]; then
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determine_latest_jdk
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perform_sanity_checks
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determine_url
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else
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feature='<overridden by custom url>'
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license='<overridden by custom url>'
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os='<overridden by custom url>'
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fi
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status=$(curl -o /dev/null --silent --head --write-out %{http_code} ${url})
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}
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function print_variables() {
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cat << EOF
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Variables:
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feature = ${feature}
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os = ${os}
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url = ${url}
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status = ${status}
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EOF
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}
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function download_and_extract_and_set_target() {
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local quiet='--quiet'; if [[ ${verbose} == true ]]; then quiet=''; fi
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local local="--directory-prefix ${workspace} --output-document=jdk.tar.gz"
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local remote='--timestamping --continue'
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local wget_options="${quiet} ${local} ${remote}"
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local tar_options="--file jdk.tar.gz"
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say "Downloading JDK from ${url}..."
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verbose "Using wget options: ${wget_options}"
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wget ${wget_options} ${url}
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if [[ ${os} == 'windows-x64' ]]; then
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script_exit "Extracting archives on Windows isn't supported, yet" 4
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fi
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verbose "Using tar options: ${tar_options}"
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if [[ ${target} == '?' ]]; then
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tar --extract ${tar_options} -C "${workspace}"
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if [[ "$OSTYPE" != "darwin"* ]]; then
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target="${workspace}"/$(tar --list ${tar_options} | grep 'bin/javac' | tr '/' '\n' | tail -3 | head -1)
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else
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target="${workspace}"/$(tar --list ${tar_options} | head -2 | tail -1 | cut -f 2 -d '/' -)/Contents/Home
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fi
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verbose "Set target to: ${target}"
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else
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echo "Using custom target: ${target}"
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if [[ "$OSTYPE" != "darwin"* ]]; then
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mkdir --parents "${target}"
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tar --extract ${tar_options} -C "${target}" --strip-components=1
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else
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mkdir -p "${target}"
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tar --extract ${tar_options} -C "${target}" --strip-components=4
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fi
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fi
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if [[ ${verbose} == true ]]; then
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echo "Content of target directory:"
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ls "${target}"
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echo "Content of release file:"
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[[ ! -f "${target}/release" ]] || cat "${target}/release"
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fi
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# Link to system certificates
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# https://openjdk.java.net/jeps/319
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# https://bugs.openjdk.java.net/browse/JDK-8196141
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if [[ ${cacerts} == true ]]; then
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local directory="${target}/lib/security/cacerts"
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if [[ -f "${directory}" ]]; then
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mv "${directory}" "${directory}.jdk"
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ln -s /etc/ssl/certs/java/cacerts "${directory}"
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else
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verbose "Directory ${directory} doesn't exist, didn't link system CA certificates."
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fi
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fi
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}
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function main() {
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initialize
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parse_options "$@"
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say "$script_name $script_version"
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prepare_variables
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if [[ ${silent} == false ]]; then print_variables; fi
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if [[ ${dry} == true ]]; then exit 0; fi
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download_and_extract_and_set_target
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export JAVA_HOME=$(cd "${target}"; pwd)
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export PATH=${JAVA_HOME}/bin:$PATH
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if [[ ${silent} == false ]]; then java -Xmx100m -version; fi
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if [[ ${emit_java_home} == true ]]; then echo "${JAVA_HOME}"; fi
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}
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main "$@"
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