Initial support for Alpine linux

Author: yaronr

install.sh

@@ -1,27 +1,37 @@
-#!/bin/bash
+#!/bin/sh
 SOURCE_DIR=/usr/src
 LUA_VERSION=5.4.4
 CWD=$(pwd)
 
-install_luaoauth_var=false
-rhel_based=false
-debian_based=false
-lua_installed=false
+install_luaoauth_var="false"
+rhel_based="false"
+debian_based="false"
+alpine_based="false"
+lua_installed="false"
 lua_dep_dir=/usr/local/share/lua/5.4/
 
 if [ -f /etc/redhat-release ]; then
-    rhel_based=true
+    echo "Red Hat based system detected"
+    rhel_based="true"
 elif [ -f /etc/debian_version ]; then
-    debian_based=true
+    echo "Debian based system detected"
+    debian_based="true"
+elif [ -f /etc/alpine-release ]; then
+    echo "Alpine based system detected"
+    alpine_based="true"
 fi
 
+if [ ! -e $SOURCE_DIR ]; then
+    mkdir -p $SOURCE_DIR;
+fi;
+
 cd $SOURCE_DIR
 
 display_working() {
     pid=$1
     spin='-\|/'
     i=0
-    while kill -0 $pid 2>/dev/null
+    while kill -0 "$pid" 2>/dev/null
     do
         i=$(( (i+1) %4 ))
         printf "\r${spin:$i:1}"
@@ -63,9 +73,44 @@ install_deb_lua() {
     apt-get install -y software-properties-common unzip build-essential libssl-dev lua5.4 liblua5.4-dev >/dev/null 2>&1
 }
 
+install_alpine_lua() {
+    printf "\r[+] Installing Lua\n"
+    apk add --no-cache lua5.4 lua5.4-dev openssl-dev gcc libc-dev git make automake libtool curl unzip >/dev/null 2>&1
+    #?? build-base libc-dev liblua5.4-dev unzip
+}    
+
 # ----------------------------
 # ----------------------------
 
+install_luaoauth_deps_alpine() {
+    printf "\r[+] Installing haproxy-lua-oauth dependencies\n"
+
+    if [ ! -e $lua_dep_dir ]; then
+        mkdir -p $lua_dep_dir;
+    fi;    
+
+    apt-get update >/dev/null 2>&1
+    apk add --no-cache lua5.4 lua5.4-dev openssl-dev gcc libc-dev git make automake libtool curl unzip >/dev/null 2>&1
+
+    cd $SOURCE_DIR
+
+    curl -sLO https://github.com/rxi/json.lua/archive/refs/heads/master.zip
+    unzip -qo master.zip && rm master.zip
+    mv json.lua-master/json.lua $lua_dep_dir 
+
+    curl -sLO https://github.com/lunarmodules/luasocket/archive/refs/heads/master.zip
+    unzip -qo master.zip && rm master.zip
+    cd luasocket-master/
+    make clean all install-both LUAINC=/usr/include/lua5.4/ >/dev/null
+    cd ..
+
+    curl -sLO https://github.com/wahern/luaossl/archive/refs/heads/master.zip
+    unzip -qo master.zip && rm master.zip
+    cd luaossl-master/
+    make install >/dev/null
+    cd ..
+}
+
 install_luaoauth_deps_debian() {
     printf "\r[+] Installing haproxy-lua-oauth dependencies\n"
 
@@ -133,26 +178,36 @@ install_luaoauth() {
         mkdir -p $lua_dep_dir;
     fi;
 
-    cp $CWD/lib/*.lua $lua_dep_dir
+    cp "$CWD"/lib/*.lua $lua_dep_dir
 }
 
 case $1 in
     luaoauth)
-        install_luaoauth_var=true
+        install_luaoauth_var="true"
         ;;
     *)
         echo "Usage: install.sh luaoauth"
+        exit 1
+        ;;
 esac
 
+echo "$rhel_based" 
+
 if $install_luaoauth_var; then
     if $rhel_based; then
-        download_and_install_luaoauth=(install_luaoauth_deps_rhel install_luaoauth)
+        echo "RHEL based system detected"
+        download_and_install_luaoauth="install_luaoauth_deps_rhel install_luaoauth"
     elif $debian_based; then
-        download_and_install_luaoauth=(install_luaoauth_deps_debian install_luaoauth)
+        echo "Debian based system detected"
+        download_and_install_luaoauth="install_luaoauth_deps_debian install_luaoauth"
+    elif $alpine_based; then
+        echo "Alpine based system detected"
+        download_and_install_luaoauth="install_luaoauth_deps_alpine install_luaoauth"
     fi
 
-    for func in ${download_and_install_luaoauth[*]}; do
-        $func &
-        display_working $!
+    for func in $download_and_install_luaoauth; do
+        "$func" &
+        display_working "$!"
     done
 fi
+