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opt
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ruby23
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lib64
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2.3.0
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gems
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rack-1.6.4
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lib
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rack
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Filename :
directory.rb
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require 'time' require 'rack/utils' require 'rack/mime' module Rack # Rack::Directory serves entries below the +root+ given, according to the # path info of the Rack request. If a directory is found, the file's contents # will be presented in an html based index. If a file is found, the env will # be passed to the specified +app+. # # If +app+ is not specified, a Rack::File of the same +root+ will be used. class Directory DIR_FILE = "<tr><td class='name'><a href='%s'>%s</a></td><td class='size'>%s</td><td class='type'>%s</td><td class='mtime'>%s</td></tr>" DIR_PAGE = <<-PAGE <html><head> <title>%s</title> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <style type='text/css'> table { width:100%%; } .name { text-align:left; } .size, .mtime { text-align:right; } .type { width:11em; } .mtime { width:15em; } </style> </head><body> <h1>%s</h1> <hr /> <table> <tr> <th class='name'>Name</th> <th class='size'>Size</th> <th class='type'>Type</th> <th class='mtime'>Last Modified</th> </tr> %s </table> <hr /> </body></html> PAGE attr_reader :files attr_accessor :root, :path def initialize(root, app=nil) @root = F.expand_path(root) @app = app || Rack::File.new(@root) end def call(env) dup._call(env) end F = ::File def _call(env) @env = env @script_name = env[SCRIPT_NAME] @path_info = Utils.unescape(env[PATH_INFO]) if forbidden = check_forbidden forbidden else @path = F.join(@root, @path_info) list_path end end def check_forbidden return unless @path_info.include? ".." body = "Forbidden\n" size = Rack::Utils.bytesize(body) return [403, {"Content-Type" => "text/plain", CONTENT_LENGTH => size.to_s, "X-Cascade" => "pass"}, [body]] end def list_directory @files = [['../','Parent Directory','','','']] glob = F.join(@path, '*') url_head = (@script_name.split('/') + @path_info.split('/')).map do |part| Rack::Utils.escape part end Dir[glob].sort.each do |node| stat = stat(node) next unless stat basename = F.basename(node) ext = F.extname(node) url = F.join(*url_head + [Rack::Utils.escape(basename)]) size = stat.size type = stat.directory? ? 'directory' : Mime.mime_type(ext) size = stat.directory? ? '-' : filesize_format(size) mtime = stat.mtime.httpdate url << '/' if stat.directory? basename << '/' if stat.directory? @files << [ url, basename, size, type, mtime ] end return [ 200, { CONTENT_TYPE =>'text/html; charset=utf-8'}, self ] end def stat(node, max = 10) F.stat(node) rescue Errno::ENOENT, Errno::ELOOP return nil end # TODO: add correct response if not readable, not sure if 404 is the best # option def list_path @stat = F.stat(@path) if @stat.readable? return @app.call(@env) if @stat.file? return list_directory if @stat.directory? else raise Errno::ENOENT, 'No such file or directory' end rescue Errno::ENOENT, Errno::ELOOP return entity_not_found end def entity_not_found body = "Entity not found: #{@path_info}\n" size = Rack::Utils.bytesize(body) return [404, {"Content-Type" => "text/plain", CONTENT_LENGTH => size.to_s, "X-Cascade" => "pass"}, [body]] end def each show_path = Rack::Utils.escape_html(@path.sub(/^#{@root}/,'')) files = @files.map{|f| DIR_FILE % DIR_FILE_escape(*f) }*"\n" page = DIR_PAGE % [ show_path, show_path , files ] page.each_line{|l| yield l } end # Stolen from Ramaze FILESIZE_FORMAT = [ ['%.1fT', 1 << 40], ['%.1fG', 1 << 30], ['%.1fM', 1 << 20], ['%.1fK', 1 << 10], ] def filesize_format(int) FILESIZE_FORMAT.each do |format, size| return format % (int.to_f / size) if int >= size end int.to_s + 'B' end private # Assumes url is already escaped. def DIR_FILE_escape url, *html [url, *html.map { |e| Utils.escape_html(e) }] end end end