From ffa39f51fa5215263fc820a88a3a3d33f1a09d53 Mon Sep 17 00:00:00 2001
From: Maxim Belkin <maxim.belkin@gmail.com>
Date: Mon, 26 Apr 2021 16:36:10 -0500
Subject: [PATCH] Update Java installation scripts

---
 scripts/install_java.sh             |  82 ----------------
 scripts/install_java_linux.sh       | 143 ++++++++++++++++++++++++++++
 scripts/install_java_macos.sh       |  60 ++++++++++++
 seednode/install_seednode_debian.sh |   4 +-
 4 files changed, 205 insertions(+), 84 deletions(-)
 delete mode 100755 scripts/install_java.sh
 create mode 100644 scripts/install_java_linux.sh
 create mode 100644 scripts/install_java_macos.sh

diff --git a/scripts/install_java.sh b/scripts/install_java.sh
deleted file mode 100755
index 5b06dfe3a8..0000000000
--- a/scripts/install_java.sh
+++ /dev/null
@@ -1,82 +0,0 @@
-#!/usr/bin/env bash
-# This script will download and install the appropriate JDK for use with Bisq development.
-# It will also configure it as the default system JDK.
-# If you need to change to another default JDK for another purpose later, you can use the
-# following commands and select the default JDK:
-# Linux:
-#     update-alternatives --config java
-#     update-alternatives --config javac
-# MacOS:
-#     echo 'export JAVA_HOME=/Library/Java/JavaVirtualMachines/<ENTER_NEW_JDK>/Contents/Home' >>~/.bash_profile
-#     echo 'export PATH=$JAVA_HOME/bin:$PATH' >>~/.bash_profile
-#     source ~/.bash_profile
-set -e
-
-unameOut="$(uname -s)"
-case "${unameOut}" in
-    Linux*)
-        JAVA_HOME=/usr/lib/jvm/openjdk-11.0.2
-        JDK_FILENAME=openjdk-11.0.2_linux-x64_bin.tar.gz
-        JDK_URL=https://download.java.net/java/GA/jdk11/9/GPL/openjdk-11.0.2_linux-x64_bin.tar.gz
-
-        # Determine which package manager to use depending on the distribution
-        declare -A osInfo;
-        osInfo[/etc/redhat-release]=yum
-        osInfo[/etc/arch-release]=pacman
-        osInfo[/etc/gentoo-release]=emerge
-        osInfo[/etc/SuSE-release]=zypp
-        osInfo[/etc/debian_version]=apt-get
-
-        for f in "${!osInfo[@]}"
-        do
-            if [[ -f $f ]]; then
-                PACKAGE_MANAGER=${osInfo[$f]}
-                break
-            fi
-        done
-
-        if [ ! -d "$JAVA_HOME" ]; then
-            # Ensure curl is installed since it may not be
-            $PACKAGE_MANAGER -y install curl
-
-            curl -L -O $JDK_URL
-            mkdir -p $JAVA_HOME
-            tar -zxf $JDK_FILENAME -C $JAVA_HOME --strip 1
-            rm $JDK_FILENAME
-
-            update-alternatives --install /usr/bin/java java $JAVA_HOME/bin/java 2000
-            update-alternatives --install /usr/bin/javac javac $JAVA_HOME/bin/javac 2000
-        fi
-
-        update-alternatives --set java $JAVA_HOME/bin/java
-        update-alternatives --set javac $JAVA_HOME/bin/javac
-        ;;
-    Darwin*)
-        JAVA_HOME=/Library/Java/JavaVirtualMachines/openjdk-11.0.2.jdk/Contents/Home
-        JDK_FILENAME=openjdk-11.0.2_osx-x64_bin.tar.gz
-        JDK_URL=https://download.java.net/java/GA/jdk11/9/GPL/openjdk-11.0.2_osx-x64_bin.tar.gz
-        if [ ! -d "$JAVA_HOME" ]; then
-            if [[ $(command -v brew) == "" ]]; then
-                echo "Installing Homebrew"
-                /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
-            else
-                echo "Updating Homebrew"
-                brew update
-            fi
-
-            brew install curl
-            curl -L -O $JDK_URL
-            sudo mkdir /Library/Java/JavaVirtualMachines/openjdk-11.0.2.jdk | sudo bash
-            gunzip -c $JDK_FILENAME | tar xopf -
-            sudo mv jdk-11.0.2.jdk/* /Library/Java/JavaVirtualMachines/openjdk-11.0.2.jdk
-            sudo rmdir jdk-11.0.2.jdk
-            rm $JDK_FILENAME
-        fi
-
-        echo export JAVA_HOME=$JAVA_HOME >>~/.bash_profile
-        echo export PATH=$JAVA_HOME/bin:"$PATH" >>~/.bash_profile
-        source "$HOME/.bash_profile"
-        ;;
-    *)
-esac
-java -version
diff --git a/scripts/install_java_linux.sh b/scripts/install_java_linux.sh
new file mode 100644
index 0000000000..ebb541b8db
--- /dev/null
+++ b/scripts/install_java_linux.sh
@@ -0,0 +1,143 @@
+#!/bin/bash
+
+# Install OpenJDK 11.0.2 on Linux
+
+set -eu
+
+# Download and install locations
+JDK_URL=https://download.java.net/java/GA/jdk11/9/GPL/openjdk-11.0.2_linux-x64_bin.tar.gz
+JAVA_HOME_DIR=/usr/lib/jvm/openjdk-11.0.2
+
+alpine_openjdk_package=openjdk11
+alpine_openjdk_location=/usr/lib/jvm/java-11-openjdk
+
+
+OS=$(uname)
+if [ "$OS" != Linux ]
+then
+    echo This script supports Linux only >&2
+    exit 1
+fi
+
+PACKAGE_MANAGER=
+for tool in apk yum pacman emerge zypper apt-get dnf
+do
+    if command -v $tool >/dev/null
+    then
+        PACKAGE_MANAGER=$tool
+        break
+    fi
+done
+
+if [ -z "$PACKAGE_MANAGER" ]
+then
+    echo "Unknown OS" >&2
+fi
+
+missing=
+for cmd in curl tar gzip
+do
+    if ! command -v $cmd >/dev/null
+    then
+        missing="${missing+$missing }$cmd"
+        if [ "$cmd" = curl ]
+        then
+            missing="$missing ca-certificates"
+        fi
+    fi
+done
+
+sudo_exec () {
+    if [ "${EID-500}" -eq 0 ] || [ "${HOME-/home}" = /root ]
+    then
+        "$@"
+    elif command -v sudo
+    then
+        sudo "$@"
+    else
+        echo "Can't execute with elevated priviliges: $*" >&2
+        exit 1
+    fi
+}
+
+# Install missing packages
+if [ -n "$missing" ]
+then
+    case "$PACKAGE_MANAGER" in
+        apk)
+            : no need to install missing packages, because
+            : we will install OpenJDK using apk
+            ;;
+        pacman)
+            sudo_exec pacman -Syy --noconfirm "$missing"
+            ;;
+        apt-get)
+            sudo_exec apt-get update
+            # shellcheck disable=SC2086
+            sudo_exec apt-get install -y --no-install-recommends $missing
+            ;;
+        dnf|emerge|yum|zypper)
+            sudo_exec "$PACKAGE_MANAGER" update
+            # shellcheck disable=SC2086
+            sudo_exec "$PACKAGE_MANAGER" install -y $missing
+            ;;
+        *)
+            echo "The following packages are missing from your system: $missing" >&2
+            echo "Please install these packages before proceeding" >&2
+            exit 1;
+            ;;
+    esac
+fi
+
+if [ "$PACKAGE_MANAGER" = apk ]
+then
+    if sudo_exec apk add --no-cache ${alpine_openjdk_package}
+    then
+        echo "Installed Java to $alpine_openjdk_location"
+        echo "To start using 'javac', add $alpine_openjdk_location/bin to your PATH:"
+        echo "export PATH=$alpine_openjdk_location/bin:\$PATH"
+    fi
+    exit
+fi
+
+
+JDK_FILENAME=$(basename "$JDK_URL")
+tmpdir=$(mktemp -d)
+trap -- 'rm -rf "$tmpdir"' EXIT
+
+mkdir "$tmpdir/JAVA_HOME_DIR"
+curl -L -o "$tmpdir/$JDK_FILENAME" "$JDK_URL"
+tar -xf "$tmpdir/$JDK_FILENAME" -C "$tmpdir/JAVA_HOME_DIR" --strip-components=1
+
+if [ -d "$tmpdir/JAVA_HOME_DIR/bin" ]
+then
+    sudo_exec rm -rf "$JAVA_HOME_DIR"
+    sudo_exec mkdir -p "$(dirname "$JAVA_HOME_DIR")"
+    sudo_exec mv "$tmpdir/JAVA_HOME_DIR" "$JAVA_HOME_DIR"
+else
+    echo "Error extracting archive contents" >&2
+    exit 1
+fi
+
+echo "Java has been installed in $JAVA_HOME_DIR"
+
+if command -v update-alternatives >/dev/null
+then
+    update-alternatives --install /usr/bin/java java "$JAVA_HOME_DIR/bin/java" 2000
+    update-alternatives --install /usr/bin/javac javac "$JAVA_HOME_DIR/bin/javac" 2000
+    update-alternatives --set java "$JAVA_HOME_DIR/bin/java"
+    update-alternatives --set javac "$JAVA_HOME_DIR/bin/javac"
+
+    echo "and configured as the default JDK using 'update-alternatives'."
+    echo "If you need to change to another JDK later, you can do so like so:"
+    echo "    update-alternatives --config java"
+    echo "    update-alternatives --config javac"
+else
+    echo "To start using it, please set/update your 'JAVA_HOME' and 'PATH' environment variables like so:"
+    echo
+    echo "export JAVA_HOME=\"$JAVA_HOME_DIR\""
+    echo "export PATH=\"$JAVA_HOME_DIR/bin:\$PATH\""
+    echo
+    echo "Consider adding the above lines to one of your personal initialization files"
+    echo " like ~/.bashrc, ~/.bash_profile, ~/.profile, or similar."
+fi
diff --git a/scripts/install_java_macos.sh b/scripts/install_java_macos.sh
new file mode 100644
index 0000000000..d672e34d13
--- /dev/null
+++ b/scripts/install_java_macos.sh
@@ -0,0 +1,60 @@
+#!/bin/bash
+
+# Install OpenJDK 11.0.2 on macOS
+
+set -eu
+
+# Download and install locations
+JDK_URL=https://download.java.net/java/GA/jdk11/9/GPL/openjdk-11.0.2_osx-x64_bin.tar.gz
+JAVA_HOME_DIR=/Library/Java/JavaVirtualMachines/openjdk-11.0.2.jdk
+
+
+OS=$(uname)
+if [[ $OS != Darwin ]]
+then
+    echo This script supports macOS only >&2
+    exit 1
+fi
+
+command -v curl >/dev/null || { echo "cURL is not available" >&2; exit 1; }
+command -v tar >/dev/null || { echo "tar is not available" >&2; exit 1; }
+
+sudo_exec () {
+    if [[ $EUID -eq 0 ]]
+    then
+        "$@"
+    else
+        sudo "$@"
+    fi
+}
+
+JDK_FILENAME=$(basename "$JDK_URL")
+
+tmpdir=$(mktemp -d)
+trap -- 'rm -rf "$tmpdir"' EXIT
+
+mkdir "$tmpdir/JAVA_HOME_DIR"
+curl -L -o "$tmpdir/$JDK_FILENAME" "$JDK_URL"
+tar -xf "$tmpdir/$JDK_FILENAME" -C "$tmpdir/JAVA_HOME_DIR" --strip-components=2
+
+if [[ -d "$tmpdir/JAVA_HOME_DIR/Contents" ]]
+then
+    sudo_exec rm -rf "$JAVA_HOME_DIR"
+    sudo_exec mkdir -p "$(dirname "$JAVA_HOME_DIR")"
+    sudo_exec mv "$tmpdir/JAVA_HOME_DIR" "$JAVA_HOME_DIR"
+else
+    echo "Error extracting archive contents" >&2
+    exit 1
+fi
+
+echo "Java has been installed in $JAVA_HOME_DIR"
+echo "To start using it, please set/update your 'JAVA_HOME' and 'PATH' environment variables like so:"
+echo
+echo "    export JAVA_HOME=\"$JAVA_HOME_DIR/Contents/Home\""
+echo "    export PATH=\"$JAVA_HOME_DIR/Contents/Home/bin:\$PATH\""
+echo
+echo "Consider adding the above lines to one of your personal initialization files."
+echo "(~/.bashrc, ~/.bash_profile, ~/.profile, or similar)."
+
+export JAVA_HOME="$JAVA_HOME_DIR/Contents/Home"
+export PATH="$JAVA_HOME_DIR/Contents/Home/bin":$PATH
diff --git a/seednode/install_seednode_debian.sh b/seednode/install_seednode_debian.sh
index 995b1e6ec7..b0d665833f 100755
--- a/seednode/install_seednode_debian.sh
+++ b/seednode/install_seednode_debian.sh
@@ -123,8 +123,8 @@ echo "[*] Moving Bisq repo"
 sudo -H -i -u "${ROOT_USER}" mv "${ROOT_HOME}/${BISQ_REPO_NAME}" "${BISQ_HOME}/${BISQ_REPO_NAME}"
 sudo -H -i -u "${ROOT_USER}" chown -R "${BISQ_USER}:${BISQ_GROUP}" "${BISQ_HOME}/${BISQ_REPO_NAME}"
 
-echo "[*] Installing OpenJDK 10.0.2 from Bisq repo"
-sudo -H -i -u "${ROOT_USER}" "${BISQ_HOME}/${BISQ_REPO_NAME}/scripts/install_java.sh"
+echo "[*] Installing OpenJDK 11.0.2 from Bisq repo"
+sudo -H -i -u "${ROOT_USER}" "${BISQ_HOME}/${BISQ_REPO_NAME}/scripts/install_java_linux.sh"
 
 echo "[*] Installing Bisq init script"
 sudo -H -i -u "${ROOT_USER}" install -c -o "${ROOT_USER}" -g "${ROOT_GROUP}" -m 644 "${BISQ_HOME}/${BISQ_REPO_NAME}/seednode/bisq.service" "${SYSTEMD_SERVICE_HOME}/bisq.service"