import

Author: ksylvest

.gitignore

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+.bundle
+pkg
+tmp
+coverage

.rspec

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+--color

.travis.yml

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+language: ruby
+rvm:
+  - 2.3.1

Gemfile

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+source "https://rubygems.org"
+
+gemspec

Gemfile.lock

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+PATH
+  remote: .
+  specs:
+    rhino (0.0.1)
+      rack
+      slop
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    coveralls (0.8.15)
+      json (>= 1.8, < 3)
+      simplecov (~> 0.12.0)
+      term-ansicolor (~> 1.3)
+      thor (~> 0.19.1)
+      tins (>= 1.6.0, < 2)
+    diff-lcs (1.2.5)
+    docile (1.1.5)
+    json (2.0.2)
+    rack (2.0.1)
+    rake (11.3.0)
+    rspec (3.5.0)
+      rspec-core (~> 3.5.0)
+      rspec-expectations (~> 3.5.0)
+      rspec-mocks (~> 3.5.0)
+    rspec-core (3.5.3)
+      rspec-support (~> 3.5.0)
+    rspec-expectations (3.5.0)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.5.0)
+    rspec-mocks (3.5.0)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.5.0)
+    rspec-support (3.5.0)
+    simplecov (0.12.0)
+      docile (~> 1.1.0)
+      json (>= 1.8, < 3)
+      simplecov-html (~> 0.10.0)
+    simplecov-html (0.10.0)
+    slop (4.4.1)
+    term-ansicolor (1.3.2)
+      tins (~> 1.0)
+    thor (0.19.1)
+    tins (1.12.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  bundler
+  coveralls
+  rhino!
+  rake
+  rspec
+
+BUNDLED WITH
+   1.13.1

LICENSE

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+Copyright (c) 2015 - 2016 Kevin Sylvestre
+
+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.

README.rdoc

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+= Rhino
+
+Rhino is a simple Ruby server that can run rack apps. It is written as a fun experiment.
+
+== Installation
+
+    gem install rhino
+
+== Usage
+
+    rhino
+
+== Advanced
+
+    rhino [options] [./config.ru]
+        -h, --help     help
+        -v, --version  version
+        -b, --bind     bind (default: 0.0.0.0)
+        -p, --port     port (default: 5000)
+        --backlog      backlog (default: 64)
+        --reuseaddr    reuseaddr (default: true)
+
+== Status
+
+{<img src="https://img.shields.io/travis/ksylvest/rhino.svg" />}[https://travis-ci.org/ksylvest/rhino]
+{<img src="https://img.shields.io/gemnasium/ksylvest/rhino.svg" />}[https://gemnasium.com/ksylvest/rhino]
+{<img src="https://img.shields.io/coveralls/ksylvest/rhino.svg" />}[https://coveralls.io/r/ksylvest/rhino]
+{<img src="https://img.shields.io/codeclimate/github/ksylvest/rhino.svg" />}[https://codeclimate.com/github/ksylvest/rhino]
+
+== Copyright
+
+Copyright (c) 2015 - 2016 Kevin Sylvestre. See LICENSE for details.

Rakefile

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+require "bundler/gem_tasks"
+require "rspec/core/rake_task"
+
+RSpec::Core::RakeTask.new(:spec)
+
+task default: :spec

bin/rhino

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+#!/usr/bin/env ruby
+
+require 'rhino'
+
+cli = Rhino::CLI.new
+cli.parse

lib/rhino.rb

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+require "rack"
+
+require "rhino/cli"
+require "rhino/config"
+require "rhino/http"
+require "rhino/launcher"
+require "rhino/logger"
+require "rhino/server"
+require "rhino/version"
+
+module Rhino
+  def self.config
+    @@config ||= Rhino::Config.new
+  end
+
+  def self.logger
+    @@logger ||= Rhino::Logger.new
+  end
+end

lib/rhino/cli.rb

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+require "slop"
+
+module Rhino
+
+  # A wrapper for command line interaction that encompasses option parsing, version, help, and execution. This class is
+  # instantiated from the binary. The class also handles bootstrapping the launcher.
+  #
+  # Usage:
+  #
+  #   cli = Rhino::CLI.new
+  #   cli.parse()
+  #
+  class CLI
+    BANNER = "usage: rhino [options] [./config.ru]".freeze
+
+    def parse(items = ARGV)
+      config = Slop.parse(items) do |options|
+        options.banner = BANNER
+
+        options.on "-h", "--help", 'help' do
+          return help(options)
+        end
+
+        options.on "-v", "--version", 'version' do
+          version
+          exit
+        end
+
+        options.string "-b", "--bind", 'bind (default: 0.0.0.0)', default: "0.0.0.0"
+        options.integer "-p", "--port", 'port (default: 5000)', default: 5000
+        options.integer "--backlog", 'backlog (default: 64)', default: 64
+        options.boolean "--reuseaddr", 'reuseaddr (default: true)', default: true
+      end
+
+      run(config)
+    end
+
+  private
+
+    def help(options)
+      Rhino.logger.log("#{options}")
+    end
+
+    def version
+      Rhino.logger.log("#{VERSION}")
+    end
+
+    def run(options)
+      config, _ = options.arguments
+      Launcher.new(options[:port], options[:bind], options[:reuseaddr], options[:backlog], config || './config.ru').run
+    end
+
+  end
+end

lib/rhino/config.rb

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+module Rhino
+  class Config
+    attr_accessor :multithread
+    attr_accessor :multiprocess
+    attr_accessor :run_once
+  end
+end

lib/rhino/http.rb

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+require "uri"
+require "rack"
+require "time"
+
+module Rhino
+  class HTTP
+    RESERVED = /\A(Date|Connection)\Z/i.freeze
+    VERSION = "HTTP/1.1".freeze
+    CRLF = "\r\n".freeze
+
+    class Exception < ::Exception
+    end
+
+    attr_accessor :socket
+
+    def initialize(socket)
+      self.socket = socket
+    end
+
+    def parse
+      rl = socket.gets
+      matches = /\A(?<method>\S+)\s+(?<uri>\S+)\s+(?<version>\S+)#{CRLF}\Z/.match(rl)
+      raise Exception.new("invalid request line: #{rl.inspect}") if !matches
+      begin
+        uri = URI.parse(matches[:uri])
+      rescue URI::InvalidURIError
+        raise Exception.new("invalid URI in request line: #{rl.inspect}")
+      end
+
+      env = {
+        "rack.errors" => $stderr,
+        "rack.input" => socket,
+        "rack.version" => Rack::VERSION,
+        "rack.multithread" => !!Rhino.config.multithread,
+        "rack.multiprocess" => !!Rhino.config.multiprocess,
+        "rack.run_once" => !!Rhino.config.run_once,
+        "rack.url_scheme" => uri.scheme || "http",
+        "REQUEST_METHOD" => matches[:method],
+        "REQUEST_URI" => matches[:uri],
+        "HTTP_VERSION" => matches[:version],
+        "QUERY_STRING" => uri.query || "",
+        "SERVER_PORT" => uri.port || 80,
+        "SERVER_NAME" => uri.host || "localhost",
+        "PATH_INFO" => uri.path || "",
+        "SCRIPT_NAME" => "",
+      }
+
+      while matches = /\A(?<key>[^:]+):\s+(?<value>.*)#{CRLF}\Z/.match(line = socket.gets) do
+
+        case matches[:key]
+        when Rack::CONTENT_TYPE then env["CONTENT_TYPE"] = matches[:value]
+        when Rack::CONTENT_LENGTH then env["CONTENT_LENGTH"] = Integer(matches[:value])
+        else env["HTTP_" + matches[:key].tr("-", "_").upcase] ||= matches[:value]
+        end
+      end
+
+      input = socket.read(env["CONTENT_LENGTH"] || 0)
+
+      env["rack.input"] = StringIO.new(input)
+
+      return env
+    end
+
+    def handle(application)
+      env = parse
+      status, headers, body = application.call(env)
+      time = Time.now.httpdate
+
+      socket.write "#{VERSION} #{status} #{Rack::Utils::HTTP_STATUS_CODES.fetch(status) { 'UNKNOWN' }}#{CRLF}"
+      socket.write "Date: #{time}#{CRLF}"
+      socket.write "Connection: close#{CRLF}"
+
+      headers.each do |key, value|
+        if !RESERVED.match(key)
+          socket.write "#{key}: #{value}#{CRLF}"
+        end
+      end
+
+      socket.write(CRLF)
+
+      body.each do |chunk|
+        socket.write(chunk)
+      end
+
+      Rhino.logger.log("[#{time}] '#{env["REQUEST_METHOD"]} #{env["REQUEST_URI"]} #{env["HTTP_VERSION"]}' #{status}")
+    end
+  end
+end

lib/rhino/launcher.rb

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+module Rhino
+  class Launcher
+    attr_accessor :port
+    attr_accessor :bind
+    attr_accessor :backlog
+    attr_accessor :config
+    attr_accessor :reuseaddr
+
+    def initialize(port, bind, reuseaddr, backlog, config)
+      self.port = port
+      self.bind = bind
+      self.reuseaddr = reuseaddr
+      self.backlog = backlog
+      self.config = config
+    end
+
+    def run
+      Rhino.logger.log("Rhino")
+      Rhino.logger.log("#{bind}:#{port}")
+
+      begin
+        socket = Socket.new(:INET, :STREAM)
+        socket.setsockopt(:SOL_SOCKET, :SO_REUSEADDR, reuseaddr)
+        socket.bind(Addrinfo.tcp(self.bind, self.port))
+        socket.listen(self.backlog)
+
+        server = Rhino::Server.new(application, [socket])
+        server.run
+      ensure
+        socket.close
+      end
+    end
+
+  private
+
+    def application
+      raw = File.read(self.config)
+      builder = <<~BUILDER
+      Rack::Builder.new do
+        #{raw}
+      end
+      BUILDER
+      @application ||= eval(builder, nil, self.config)
+    end
+
+  end
+end

lib/rhino/logger.rb

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+module Rhino
+  class Logger
+    attr_accessor :stream
+
+    def initialize(stream = STDOUT)
+      self.stream = stream
+    end
+
+    def log(message)
+      self.stream.puts "#{message}"
+    end
+
+  end
+end