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ðŸ“ ..
ðŸ“ auth
ðŸ“„ body_proxy.rb(1.3 KB)
ðŸ“„ builder.rb(8.56 KB)
ðŸ“„ cascade.rb(2.25 KB)
ðŸ“„ chunked.rb(3.3 KB)
ðŸ“„ common_logger.rb(3.12 KB)
ðŸ“„ conditional_get.rb(2.99 KB)
ðŸ“„ config.rb(410 B)
ðŸ“„ constants.rb(2.47 KB)
ðŸ“„ content_length.rb(806 B)
ðŸ“„ content_type.rb(695 B)
ðŸ“„ deflater.rb(5.51 KB)
ðŸ“„ directory.rb(6.02 KB)
ðŸ“„ etag.rb(1.87 KB)
ðŸ“„ events.rb(4.8 KB)
ðŸ“„ file.rb(167 B)
ðŸ“„ files.rb(5.66 KB)
ðŸ“„ head.rb(524 B)
ðŸ“„ headers.rb(2.96 KB)
ðŸ“„ lint.rb(36.09 KB)
ðŸ“„ lock.rb(573 B)
ðŸ“„ logger.rb(414 B)
ðŸ“„ media_type.rb(1.4 KB)
ðŸ“„ method_override.rb(1.45 KB)
ðŸ“„ mime.rb(32.69 KB)
ðŸ“„ mock.rb(63 B)
ðŸ“„ mock_request.rb(5.37 KB)
ðŸ“„ mock_response.rb(3.28 KB)
ðŸ“ multipart
ðŸ“„ multipart.rb(1.17 KB)
ðŸ“„ null_logger.rb(1.18 KB)
ðŸ“„ query_parser.rb(8.37 KB)
ðŸ“„ recursive.rb(1.78 KB)
ðŸ“„ reloader.rb(3.02 KB)
ðŸ“„ request.rb(24.57 KB)
ðŸ“„ response.rb(10.72 KB)
ðŸ“„ rewindable_input.rb(3.12 KB)
ðŸ“„ runtime.rb(870 B)
ðŸ“„ sendfile.rb(5.55 KB)
ðŸ“„ show_exceptions.rb(13.73 KB)
ðŸ“„ show_status.rb(3.58 KB)
ðŸ“„ static.rb(6 KB)
ðŸ“„ tempfile_reaper.rb(778 B)
ðŸ“„ urlmap.rb(2.81 KB)
ðŸ“„ utils.rb(21.1 KB)
ðŸ“„ version.rb(958 B)

Editing: files.rb

# frozen_string_literal: true

require 'time'

require_relative 'constants'
require_relative 'head'
require_relative 'utils'
require_relative 'request'
require_relative 'mime'

module Rack
  # Rack::Files serves files below the +root+ directory given, according to the
  # path info of the Rack request.
  # e.g. when Rack::Files.new("/etc") is used, you can access 'passwd' file
  # as http://localhost:9292/passwd
  #
  # Handlers can detect if bodies are a Rack::Files, and use mechanisms
  # like sendfile on the +path+.

class Files
    ALLOWED_VERBS = %w[GET HEAD OPTIONS]
    ALLOW_HEADER = ALLOWED_VERBS.join(', ')
    MULTIPART_BOUNDARY = 'AaB03x'

attr_reader :root

def initialize(root, headers = {}, default_mime = 'text/plain')
      @root = (::File.expand_path(root) if root)
      @headers = headers
      @default_mime = default_mime
      @head = Rack::Head.new(lambda { |env| get env })
    end

def call(env)
      # HEAD requests drop the response body, including 4xx error messages.
      @head.call env
    end

def get(env)
      request = Rack::Request.new env
      unless ALLOWED_VERBS.include? request.request_method
        return fail(405, "Method Not Allowed", { 'allow' => ALLOW_HEADER })
      end

path_info = Utils.unescape_path request.path_info
      return fail(400, "Bad Request") unless Utils.valid_path?(path_info)

clean_path_info = Utils.clean_path_info(path_info)
      path = ::File.join(@root, clean_path_info)

available = begin
        ::File.file?(path) && ::File.readable?(path)
      rescue SystemCallError
        # Not sure in what conditions this exception can occur, but this
        # is a safe way to handle such an error.
        # :nocov:
        false
        # :nocov:
      end

if available
        serving(request, path)
      else
        fail(404, "File not found: #{path_info}")
      end
    end

def serving(request, path)
      if request.options?
        return [200, { 'allow' => ALLOW_HEADER, CONTENT_LENGTH => '0' }, []]
      end
      last_modified = ::File.mtime(path).httpdate
      return [304, {}, []] if request.get_header('HTTP_IF_MODIFIED_SINCE') == last_modified

headers = { "last-modified" => last_modified }
      mime_type = mime_type path, @default_mime
      headers[CONTENT_TYPE] = mime_type if mime_type

# Set custom headers
      headers.merge!(@headers) if @headers

status = 200
      size = filesize path

ranges = Rack::Utils.get_byte_ranges(request.get_header('HTTP_RANGE'), size)
      if ranges.nil?
        # No ranges:
        ranges = [0..size - 1]
      elsif ranges.empty?
        # Unsatisfiable. Return error, and file size:
        response = fail(416, "Byte range unsatisfiable")
        response[1]["content-range"] = "bytes */#{size}"
        return response
      else
        # Partial content
        partial_content = true

if ranges.size == 1
          range = ranges[0]
          headers["content-range"] = "bytes #{range.begin}-#{range.end}/#{size}"
        else
          headers[CONTENT_TYPE] = "multipart/byteranges; boundary=#{MULTIPART_BOUNDARY}"
        end

status = 206
        body = BaseIterator.new(path, ranges, mime_type: mime_type, size: size)
        size = body.bytesize
      end

headers[CONTENT_LENGTH] = size.to_s

if request.head?
        body = []
      elsif !partial_content
        body = Iterator.new(path, ranges, mime_type: mime_type, size: size)
      end

[status, headers, body]
    end

class BaseIterator
      attr_reader :path, :ranges, :options

def initialize(path, ranges, options)
        @path = path
        @ranges = ranges
        @options = options
      end

def each
        ::File.open(path, "rb") do |file|
          ranges.each do |range|
            yield multipart_heading(range) if multipart?

each_range_part(file, range) do |part|
              yield part
            end
          end

yield "\r\n--#{MULTIPART_BOUNDARY}--\r\n" if multipart?
        end
      end

def bytesize
        size = ranges.inject(0) do |sum, range|
          sum += multipart_heading(range).bytesize if multipart?
          sum += range.size
        end
        size += "\r\n--#{MULTIPART_BOUNDARY}--\r\n".bytesize if multipart?
        size
      end

def close; end

private

def multipart?
        ranges.size > 1
      end

def multipart_heading(range)
<<-EOF
\r
--#{MULTIPART_BOUNDARY}\r
content-type: #{options[:mime_type]}\r
content-range: bytes #{range.begin}-#{range.end}/#{options[:size]}\r
\r
EOF
      end

def each_range_part(file, range)
        file.seek(range.begin)
        remaining_len = range.end - range.begin + 1
        while remaining_len > 0
          part = file.read([8192, remaining_len].min)
          break unless part
          remaining_len -= part.length

yield part
        end
      end
    end

class Iterator < BaseIterator
      alias :to_path :path
    end

private

def fail(status, body, headers = {})
      body += "\n"

[
        status,
        {
          CONTENT_TYPE   => "text/plain",
          CONTENT_LENGTH => body.size.to_s,
          "x-cascade" => "pass"
        }.merge!(headers),
        [body]
      ]
    end

# The MIME type for the contents of the file located at @path
    def mime_type(path, default_mime)
      Mime.mime_type(::File.extname(path), default_mime)
    end

def filesize(path)
      #   We check via File::size? whether this file provides size info
      #   via stat (e.g. /proc files often don't), otherwise we have to
      #   figure it out by reading the whole file into memory.
      ::File.size?(path) || ::File.read(path).bytesize
    end
  end
end

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