Initial commit

lib/opendax/renderer.rb

@@ -0,0 +1,79 @@
+# frozen_string_literal: true
+
+require 'openssl'
+require 'sshkey'
+require 'pathname'
+require 'yaml'
+require 'base64'
+require 'fileutils'
+
+module Opendax
+  # Renderer is class for rendering Opendax templates.
+  class Renderer
+    TEMPLATE_PATH = Pathname.new('./templates')
+
+    BARONG_KEY = 'config/secrets/barong.key'
+    APPLOGIC_KEY = 'config/secrets/applogic.key'
+    SSH_KEY = 'config/secrets/app.key'
+
+    def render
+      @config ||= config
+      @utils  ||= utils
+      @name ||= @config['app']['name'].downcase
+      @barong_key ||= OpenSSL::PKey::RSA.new(File.read(BARONG_KEY), '')
+      @applogic_key ||= OpenSSL::PKey::RSA.new(File.read(APPLOGIC_KEY), '')
+      @barong_private_key ||= Base64.urlsafe_encode64(@barong_key.to_pem)
+      @barong_public_key  ||= Base64.urlsafe_encode64(@barong_key.public_key.to_pem)
+      @applogic_private_key ||= Base64.urlsafe_encode64(@applogic_key.to_pem)
+      @applogic_public_key ||= Base64.urlsafe_encode64(@applogic_key.public_key.to_pem)
+
+      Dir.glob("#{TEMPLATE_PATH}/**/*.erb", File::FNM_DOTMATCH).each do |file|
+        output_file = template_name(file)
+        FileUtils.chmod 0o644, output_file if File.exist?(output_file)
+        render_file(file, output_file)
+        FileUtils.chmod 0o444, output_file if @config['render_protect']
+      end
+    end
+
+    def render_file(file, out_file)
+      puts "Rendering #{out_file}"
+      result = ERB.new(File.read(file), trim_mode: '-').result(binding)
+      dir = File.dirname(out_file)
+      FileUtils.mkdir(dir) unless Dir.exist?(dir)
+      File.write(out_file, result)
+    end
+
+    def ssl_helper(arg)
+      @config['ssl']['enabled'] ? arg << 's' : arg
+    end
+
+    def template_name(file)
+      path = Pathname.new(file)
+      out_path = path.relative_path_from(TEMPLATE_PATH).sub('.erb', '')
+
+      File.join('.', out_path)
+    end
+
+    def render_keys
+      generate_key(BARONG_KEY)
+      generate_key(APPLOGIC_KEY)
+      generate_key(SSH_KEY, public: true)
+    end
+
+    def generate_key(filename, public: false)
+      return if File.file?(filename)
+
+      key = SSHKey.generate(type: 'RSA', bits: 2048)
+      File.write(filename, key.private_key)
+      File.write("#{filename}.pub", key.ssh_public_key) if public
+    end
+
+    def config
+      Opendax::ConfigLoader.load
+    end
+
+    def utils
+      YAML.load_file('./config/utils.yml')
+    end
+  end
+end