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#  Phusion Passenger - https://www.phusionpassenger.com/
#  Copyright (c) 2013-2017 Phusion Holding B.V.
#
#  "Passenger", "Phusion Passenger" and "Union Station" are registered
#  trademarks of Phusion Holding B.V.
#
#  Permission is hereby granted, free of charge, to any person obtaining a copy
#  of this software and associated documentation files (the "Software"), to deal
#  in the Software without restriction, including without limitation the rights
#  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#  copies of the Software, and to permit persons to whom the Software is
#  furnished to do so, subject to the following conditions:
#
#  The above copyright notice and this permission notice shall be included in
#  all copies or substantial portions of the Software.
#
#  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
#  THE SOFTWARE.

LOCATIONS_INI = ENV['LOCATIONS_INI']
abort "Please set the LOCATIONS_INI environment variable to the right locations.ini" if !LOCATIONS_INI

PACKAGING_METHOD = ENV['NATIVE_PACKAGING_METHOD'] || ENV['PACKAGING_METHOD']
if !["deb", "rpm", "homebrew"].include?(PACKAGING_METHOD)
  abort "Please set PACKAGING_METHOD to either 'deb', 'rpm' or 'homebrew'"
end

# Clean Bundler environment variables. We don't want to start Passenger Standalone
# with Bundler.
if defined?(Bundler)
  clean_env = nil
  Bundler.with_clean_env do
    clean_env = ENV.to_hash
  end
  ENV.replace(clean_env)
end

source_root = File.expand_path("../..", File.dirname(__FILE__))
$LOAD_PATH.unshift("#{source_root}/src/ruby_supportlib")
require 'phusion_passenger'
PhusionPassenger.locate_directories
PhusionPassenger.require_passenger_lib 'constants'
PhusionPassenger.require_passenger_lib 'platform_info/operating_system'
PhusionPassenger.require_passenger_lib 'config/validate_install_command'
require 'tmpdir'
require 'fileutils'
require 'open-uri'
require 'pathname'


# Ensure that the natively installed tools are in PATH.
ENV['PATH'] = "#{ENV['PATH']}:/usr/bin:/usr/sbin"
# Force Rake to redirect stderr to stdout so that we can capture all output.
ENV['STDERR_TO_STDOUT'] = '1'


module PhusionPassenger

case PACKAGING_METHOD
when "deb"
  BINDIR = "/usr/bin"
  SBINDIR = "/usr/sbin"
  INCLUDEDIR = "/usr/share/#{GLOBAL_NAMESPACE_DIRNAME}/include"
  NGINX_ADDON_DIR = "/usr/share/#{GLOBAL_NAMESPACE_DIRNAME}/ngx_http_passenger_module"
  DOCDIR = "/usr/share/doc/passenger"
  HELPER_SCRIPTS_DIR = "/usr/share/#{GLOBAL_NAMESPACE_DIRNAME}/helper-scripts"
  RUBY_EXTENSION_SOURCE_DIR = "/usr/share/#{GLOBAL_NAMESPACE_DIRNAME}/ruby_extension_source"
  SUPPORT_BINARIES_DIR = "/usr/lib/#{GLOBAL_NAMESPACE_DIRNAME}/support-binaries"
  APACHE2_MODULE_PATH = "/usr/lib/apache2/modules/mod_passenger.so"
  SUPPORTS_COMPILING_APACHE_MODULE = false

  if File.exist?("/usr/bin/apxs")
    APXS2 = "/usr/bin/apxs"
  else
    APXS2 = "/usr/bin/apxs2"
  end
  APACHE2 = "/usr/sbin/apache2"
  APACHE2CTL = "/usr/sbin/apache2ctl"
  APACHE_CONFIG_FILE = "/etc/apache2/apache2.conf"
  APACHE_ERROR_LOG = "/var/log/apache2/error.log"
when "rpm"
  File.read("/etc/redhat-release") =~ /release ([0-9]+)/
  redhat_major_release = $1.to_i

  BINDIR = "/usr/bin"
  SBINDIR = "/usr/sbin"
  INCLUDEDIR = "/usr/share/#{GLOBAL_NAMESPACE_DIRNAME}/include"
  NGINX_ADDON_DIR = "/usr/share/#{GLOBAL_NAMESPACE_DIRNAME}/ngx_http_passenger_module"
  DOCDIR = "/usr/share/doc/passenger"
  HELPER_SCRIPTS_DIR = "/usr/share/#{GLOBAL_NAMESPACE_DIRNAME}/helper-scripts"
  RUBY_EXTENSION_SOURCE_DIR = "/usr/share/#{GLOBAL_NAMESPACE_DIRNAME}/ruby_extension_source"
  SUPPORT_BINARIES_DIR = "/usr/lib64/#{GLOBAL_NAMESPACE_DIRNAME}/support-binaries"
  APACHE2_MODULE_PATH = "/usr/lib64/httpd/modules/mod_passenger.so"
  SUPPORTS_COMPILING_APACHE_MODULE = false

  if redhat_major_release >= 7
    APXS2 = "/usr/bin/apxs"
  else
    APXS2 = "/usr/sbin/apxs"
  end
  APACHE2 = "/usr/sbin/httpd"
  APACHE2CTL = "/usr/sbin/apachectl"
  APACHE_CONFIG_FILE = "/etc/httpd/conf/httpd.conf"
  APACHE_ERROR_LOG = "/etc/httpd/logs/error_log"
when "homebrew"
  # Ensure that the Homebrew-installed Phusion Passenger is the first in PATH.
  brew_prefix = `env -P /usr/local/bin:/opt/homebrew/bin brew --prefix`
  ENV['PATH'] = "#{brew_prefix}/bin:#{ENV['PATH']}"
  root = "#{brew_prefix}/Cellar/passenger/#{VERSION_STRING}/libexec"

  BINDIR = "#{root}/bin"
  SBINDIR = BINDIR
  INCLUDEDIR = "#{root}/src"
  NGINX_ADDON_DIR = "#{root}/src/nginx_module"
  DOCDIR = "#{root}/doc"
  HELPER_SCRIPTS_DIR = "#{root}/src/helper-scripts"
  RUBY_EXTENSION_SOURCE_DIR = "#{root}/src/ruby_native_extension"
  SUPPORT_BINARIES_DIR = "#{root}/buildout/support-binaries"
  APACHE2_MODULE_PATH = "#{root}/buildout/apache2/mod_passenger.so"
  SUPPORTS_COMPILING_APACHE_MODULE = true

  if PhusionPassenger::PlatformInfo.os_version >= '10.13'
    APXS2 = nil
  else
    APXS2 = "/usr/sbin/apxs"
  end
  APACHE2 = "/usr/sbin/httpd"
  APACHE2CTL = "/usr/sbin/apachectl"
  APACHE_CONFIG_FILE = "/private/etc/apache2/httpd.conf"
  APACHE_ERROR_LOG = "/private/var/log/apache2/error_log"
end

describe "A natively packaged Phusion Passenger" do
  def capture_output(command)
    output = `#{command}`.strip
    if output.respond_to?(:force_encoding)
      output.force_encoding('utf-8')
    end
    if $?.exitstatus == 0
      return output
    else
      filename = `mktemp /tmp/output.XXXXXX`.strip
      File.open(filename, "w:utf-8") do |f|
        f.write(output)
      end
      STDERR.puts "Command #{command} exited with status #{$?.exitstatus}. Output written to #{filename}"
      if ENV['PRINT_FAILED_COMMAND_OUTPUT']
        STDERR.puts output
      end
      abort
    end
  end

  def which(command)
    return capture_output("which #{command}")
  end

  def realpath(path)
    Pathname.new(path).realpath.to_s
  end

  def sh(*command)
    if !system(*command)
      abort "Command failed: #{command.join(' ')}"
    end
  end

  def install_apache2_module
    orig_mtime = File.stat(APACHE2_MODULE_PATH).mtime
    output = capture_output("passenger-install-apache2-module --auto 2>&1")
    output.should include("Almost there!")
    output.should include("LoadModule passenger_module #{APACHE2_MODULE_PATH}\n")
    output.should include("PassengerRoot #{LOCATIONS_INI}\n")
    File.stat(APACHE2_MODULE_PATH).mtime.should_not == orig_mtime
  end

  def install_nginx_module
    Dir.mktmpdir do |path|
      output = capture_output("passenger-install-nginx-module --auto --prefix=#{path} --auto-download 2>&1")
      output.should include("passenger_root #{LOCATIONS_INI};")
      File.exist?("#{path}/sbin/nginx").should be_truthy
    end
  end

  specify "locations.ini only refers to existent filesystem locations" do
    File.read(LOCATIONS_INI).split("\n").each do |line|
      if line =~ /=/
        name, filename = line.split('=', 2)
        if filename =~ /^\// && !File.exist?(filename)
          raise "#{filename} does not exist"
        end
      end
    end
  end

  specify "locations.ini sets packaging_method to #{PACKAGING_METHOD}" do
    File.read(LOCATIONS_INI).should =~ /^packaging_method=#{PACKAGING_METHOD}$/
  end

  specify "passenger-status is in #{SBINDIR}" do
    realpath(which("passenger-status")).should == "#{SBINDIR}/passenger-status"
  end

  specify "the Nginx runtime library headers exist" do
    File.directory?(INCLUDEDIR).should be_truthy
    Dir["#{INCLUDEDIR}/cxx_supportlib/*.h"].should_not be_empty
  end

  specify "the Nginx addon directory exists" do
    File.directory?(NGINX_ADDON_DIR).should be_truthy
    File.file?("#{NGINX_ADDON_DIR}/ngx_http_passenger_module.c")
  end

  specify "the helper-scripts directory exists" do
    File.directory?(HELPER_SCRIPTS_DIR).should be_truthy
    File.file?("#{HELPER_SCRIPTS_DIR}/rack-loader.rb").should be_truthy
  end

  specify "the Ruby extension source directory exists" do
    File.directory?(RUBY_EXTENSION_SOURCE_DIR).should be_truthy
    File.file?("#{RUBY_EXTENSION_SOURCE_DIR}/extconf.rb").should be_truthy
  end

  specify "the support-binaries directory exists" do
    File.directory?(SUPPORT_BINARIES_DIR).should be_truthy
    File.file?("#{SUPPORT_BINARIES_DIR}/#{AGENT_EXE}").should be_truthy
    File.executable?("#{SUPPORT_BINARIES_DIR}/#{AGENT_EXE}").should be_truthy
  end

  specify "the Apache 2 module exists" do
    File.file?(APACHE2_MODULE_PATH).should be_truthy
  end

  describe "passenger-config" do
    it "passenger-config is in #{BINDIR}" do
      realpath(which("passenger-config")).should == "#{BINDIR}/passenger-config"
    end

    it "shows the path to locations.ini" do
      capture_output("passenger-config --root").should == LOCATIONS_INI
    end

    it "recognizes the runtime libraries as compiled" do
      system("passenger-config --compiled").should be_truthy
    end

    it "recognizes the install as custom packaged" do
      system("passenger-config --custom-packaged").should be_truthy
    end

    it "recognizes the install as coming from an official package" do
      system("passenger-config --installed-from-release-package").should be_truthy
    end

    it "recognizes the system's Apache" do
      output = capture_output("passenger-config --detect-apache2")
      output.gsub!(/.*Final autodetection results\n/m, '')
      output.scan(/\* Found Apache .*\!/).size.should eq(1), "Output didn't contain 'Found Apache', was:\n\n#{output}\n\n"
      if APXS2
        output.should include("apxs2          : #{APXS2}\n")
      else
        output.should include("apxs2          : N/A\n")
      end
      output.should include("Main executable: #{APACHE2}\n")
      output.should include("Control command: #{APACHE2CTL}\n")
      output.should include("Config file    : #{APACHE_CONFIG_FILE}\n")
      output.should include("Error log file : #{APACHE_ERROR_LOG}\n")
      output.should include(%Q{
   To start, stop or restart this specific Apache version:
      #{APACHE2CTL} start
      #{APACHE2CTL} stop
      #{APACHE2CTL} restart})
      output.should include(%Q{
   To troubleshoot, please read the logs in this file:
      #{APACHE_ERROR_LOG}})
    end

    it "shows the directory to the runtime library headers" do
      capture_output("passenger-config --includedir").should == INCLUDEDIR
    end

    it "shows the directory to the Nginx addon" do
      capture_output("passenger-config --nginx-addon-dir").should == NGINX_ADDON_DIR
    end

    it "shows the Nginx runtime libraries" do
      libs = capture_output("passenger-config --nginx-libs").split(" ")
      libs.should_not be_empty
      libs.each do |lib|
        File.file?(lib).should be_truthy
      end
    end

    it "validates the install as working" do
      system("passenger-config validate-install --auto >/dev/null 2>/dev/null")
      [0, Config::ValidateInstallCommand::WARN_EXIT_CODE].should include($?.exitstatus)
    end
  end

  describe "passenger-memory-stats" do
    it "is in #{SBINDIR}" do
      realpath(which("passenger-memory-stats")).should == "#{SBINDIR}/passenger-memory-stats"
    end

    it "works" do
      capture_output("passenger-memory-stats").should =~ /Passenger processes/
    end
  end

  describe "passenger-install-apache2-module" do
    it "is in #{BINDIR}" do
      realpath(which("passenger-install-apache2-module")).should == "#{BINDIR}/passenger-install-apache2-module"
    end

    if SUPPORTS_COMPILING_APACHE_MODULE
      it "is able to compile the Apache module and doesn't break passenger-install-nginx-module" do
        install_apache2_module
        install_nginx_module
      end
    else
      it "checks whether the Apache module is installed" do
        output = capture_output("passenger-install-apache2-module --auto 2>&1")
        output.should =~ /Apache module is correctly installed/
      end
    end
  end

  describe "passenger-install-nginx-module" do
    it "is in #{BINDIR}" do
      realpath(which("passenger-install-nginx-module")).should == "#{BINDIR}/passenger-install-nginx-module"
    end

    if SUPPORTS_COMPILING_APACHE_MODULE
      it "is able to compile Nginx and doesn't break passenger-install-apache2-module" do
        install_nginx_module
        install_apache2_module
      end
    else
      it "is able to compile Nginx" do
        install_nginx_module
      end
    end
  end

  describe "Passenger Standalone" do
    it "is in #{BINDIR}" do
      realpath(which("passenger")).should == "#{BINDIR}/passenger"
    end

    it "works" do
      Dir.mktmpdir do |dir|
        File.chmod(0755, dir)
        Dir.chdir(dir) do
          File.open("config.ru", "w") do |f|
            f.write(%Q{
              app = lambda do |env|
                [200, { "Content-Type" => "text/plain" }, ["ok"]]
              end
              run app
            })
          end
          Dir.mkdir("public")
          Dir.mkdir("tmp")
          sh("passenger start --no-install-runtime --port 4000 --daemonize >/dev/null")
          begin
            if RUBY_VERSION >= '2.5'
              URI.open("http://127.0.0.1:4000/") do |f|
                f.read.should == "ok"
              end
            else
              open("http://127.0.0.1:4000/") do |f|
                f.read.should == "ok"
              end
            end
          ensure
            sh("passenger stop -p 4000")
          end
        end
      end
    end
  end
end

end # module PhusionPassenger