mirror of
https://github.com/ruby/ruby.git
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811 lines
25 KiB
Ruby
811 lines
25 KiB
Ruby
# frozen_string_literal: true
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require 'uri'
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require 'stringio'
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require 'time'
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module URI
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# Allows the opening of various resources including URIs.
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#
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# If the first argument responds to the 'open' method, 'open' is called on
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# it with the rest of the arguments.
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#
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# If the first argument is a string that begins with <code>(protocol)://<code>, it is parsed by
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# URI.parse. If the parsed object responds to the 'open' method,
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# 'open' is called on it with the rest of the arguments.
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#
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# Otherwise, Kernel#open is called.
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#
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# OpenURI::OpenRead#open provides URI::HTTP#open, URI::HTTPS#open and
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# URI::FTP#open, Kernel#open.
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#
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# We can accept URIs and strings that begin with http://, https:// and
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# ftp://. In these cases, the opened file object is extended by OpenURI::Meta.
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def self.open(name, *rest, &block)
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if name.respond_to?(:open)
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name.open(*rest, &block)
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elsif name.respond_to?(:to_str) &&
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%r{\A[A-Za-z][A-Za-z0-9+\-\.]*://} =~ name &&
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(uri = URI.parse(name)).respond_to?(:open)
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uri.open(*rest, &block)
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else
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super
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end
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end
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end
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# OpenURI is an easy-to-use wrapper for Net::HTTP, Net::HTTPS and Net::FTP.
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#
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# == Example
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#
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# It is possible to open an http, https or ftp URL as though it were a file:
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#
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# URI.open("http://www.ruby-lang.org/") {|f|
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# f.each_line {|line| p line}
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# }
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#
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# The opened file has several getter methods for its meta-information, as
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# follows, since it is extended by OpenURI::Meta.
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#
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# URI.open("http://www.ruby-lang.org/en") {|f|
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# f.each_line {|line| p line}
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# p f.base_uri # <URI::HTTP:0x40e6ef2 URL:http://www.ruby-lang.org/en/>
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# p f.content_type # "text/html"
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# p f.charset # "iso-8859-1"
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# p f.content_encoding # []
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# p f.last_modified # Thu Dec 05 02:45:02 UTC 2002
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# }
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#
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# Additional header fields can be specified by an optional hash argument.
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#
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# URI.open("http://www.ruby-lang.org/en/",
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# "User-Agent" => "Ruby/#{RUBY_VERSION}",
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# "From" => "foo@bar.invalid",
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# "Referer" => "http://www.ruby-lang.org/") {|f|
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# # ...
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# }
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#
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# The environment variables such as http_proxy, https_proxy and ftp_proxy
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# are in effect by default. Here we disable proxy:
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#
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# URI.open("http://www.ruby-lang.org/en/", :proxy => nil) {|f|
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# # ...
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# }
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#
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# See OpenURI::OpenRead.open and URI.open for more on available options.
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#
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# URI objects can be opened in a similar way.
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#
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# uri = URI.parse("http://www.ruby-lang.org/en/")
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# uri.open {|f|
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# # ...
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# }
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#
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# URI objects can be read directly. The returned string is also extended by
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# OpenURI::Meta.
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#
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# str = uri.read
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# p str.base_uri
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#
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# Author:: Tanaka Akira <akr@m17n.org>
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module OpenURI
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Options = {
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:proxy => true,
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:proxy_http_basic_authentication => true,
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:progress_proc => true,
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:content_length_proc => true,
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:http_basic_authentication => true,
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:read_timeout => true,
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:open_timeout => true,
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:ssl_ca_cert => nil,
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:ssl_verify_mode => nil,
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:ftp_active_mode => false,
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:redirect => true,
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:encoding => nil,
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}
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def OpenURI.check_options(options) # :nodoc:
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options.each {|k, v|
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next unless Symbol === k
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unless Options.include? k
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raise ArgumentError, "unrecognized option: #{k}"
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end
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}
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end
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def OpenURI.scan_open_optional_arguments(*rest) # :nodoc:
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if !rest.empty? && (String === rest.first || Integer === rest.first)
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mode = rest.shift
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if !rest.empty? && Integer === rest.first
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perm = rest.shift
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end
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end
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return mode, perm, rest
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end
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def OpenURI.open_uri(name, *rest) # :nodoc:
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uri = URI::Generic === name ? name : URI.parse(name)
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mode, _, rest = OpenURI.scan_open_optional_arguments(*rest)
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options = rest.shift if !rest.empty? && Hash === rest.first
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raise ArgumentError.new("extra arguments") if !rest.empty?
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options ||= {}
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OpenURI.check_options(options)
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if /\Arb?(?:\Z|:([^:]+))/ =~ mode
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encoding, = $1,Encoding.find($1) if $1
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mode = nil
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end
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if options.has_key? :encoding
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if !encoding.nil?
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raise ArgumentError, "encoding specified twice"
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end
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encoding = Encoding.find(options[:encoding])
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end
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unless mode == nil ||
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mode == 'r' || mode == 'rb' ||
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mode == File::RDONLY
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raise ArgumentError.new("invalid access mode #{mode} (#{uri.class} resource is read only.)")
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end
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io = open_loop(uri, options)
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io.set_encoding(encoding) if encoding
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if block_given?
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begin
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yield io
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ensure
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if io.respond_to? :close!
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io.close! # Tempfile
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else
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io.close if !io.closed?
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end
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end
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else
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io
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end
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end
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def OpenURI.open_loop(uri, options) # :nodoc:
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proxy_opts = []
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proxy_opts << :proxy_http_basic_authentication if options.include? :proxy_http_basic_authentication
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proxy_opts << :proxy if options.include? :proxy
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proxy_opts.compact!
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if 1 < proxy_opts.length
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raise ArgumentError, "multiple proxy options specified"
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end
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case proxy_opts.first
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when :proxy_http_basic_authentication
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opt_proxy, proxy_user, proxy_pass = options.fetch(:proxy_http_basic_authentication)
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proxy_user = proxy_user.to_str
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proxy_pass = proxy_pass.to_str
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if opt_proxy == true
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raise ArgumentError.new("Invalid authenticated proxy option: #{options[:proxy_http_basic_authentication].inspect}")
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end
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when :proxy
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opt_proxy = options.fetch(:proxy)
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proxy_user = nil
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proxy_pass = nil
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when nil
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opt_proxy = true
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proxy_user = nil
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proxy_pass = nil
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end
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case opt_proxy
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when true
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find_proxy = lambda {|u| pxy = u.find_proxy; pxy ? [pxy, nil, nil] : nil}
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when nil, false
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find_proxy = lambda {|u| nil}
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when String
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opt_proxy = URI.parse(opt_proxy)
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find_proxy = lambda {|u| [opt_proxy, proxy_user, proxy_pass]}
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when URI::Generic
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find_proxy = lambda {|u| [opt_proxy, proxy_user, proxy_pass]}
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else
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raise ArgumentError.new("Invalid proxy option: #{opt_proxy}")
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end
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uri_set = {}
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buf = nil
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while true
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redirect = catch(:open_uri_redirect) {
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buf = Buffer.new
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uri.buffer_open(buf, find_proxy.call(uri), options)
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nil
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}
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if redirect
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if redirect.relative?
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# Although it violates RFC2616, Location: field may have relative
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# URI. It is converted to absolute URI using uri as a base URI.
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redirect = uri + redirect
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end
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if !options.fetch(:redirect, true)
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raise HTTPRedirect.new(buf.io.status.join(' '), buf.io, redirect)
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end
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unless OpenURI.redirectable?(uri, redirect)
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raise "redirection forbidden: #{uri} -> #{redirect}"
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end
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if options.include? :http_basic_authentication
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# send authentication only for the URI directly specified.
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options = options.dup
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options.delete :http_basic_authentication
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end
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uri = redirect
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raise "HTTP redirection loop: #{uri}" if uri_set.include? uri.to_s
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uri_set[uri.to_s] = true
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else
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break
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end
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end
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io = buf.io
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io.base_uri = uri
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io
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end
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def OpenURI.redirectable?(uri1, uri2) # :nodoc:
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# This test is intended to forbid a redirection from http://... to
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# file:///etc/passwd, file:///dev/zero, etc. CVE-2011-1521
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# https to http redirect is also forbidden intentionally.
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# It avoids sending secure cookie or referer by non-secure HTTP protocol.
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# (RFC 2109 4.3.1, RFC 2965 3.3, RFC 2616 15.1.3)
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# However this is ad hoc. It should be extensible/configurable.
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uri1.scheme.downcase == uri2.scheme.downcase ||
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(/\A(?:http|ftp)\z/i =~ uri1.scheme && /\A(?:https?|ftp)\z/i =~ uri2.scheme)
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end
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def OpenURI.open_http(buf, target, proxy, options) # :nodoc:
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if proxy
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proxy_uri, proxy_user, proxy_pass = proxy
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raise "Non-HTTP proxy URI: #{proxy_uri}" if proxy_uri.class != URI::HTTP
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end
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if target.userinfo
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raise ArgumentError, "userinfo not supported. [RFC3986]"
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end
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header = {}
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options.each {|k, v| header[k] = v if String === k }
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require 'net/http'
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klass = Net::HTTP
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if URI::HTTP === target
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# HTTP or HTTPS
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if proxy
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unless proxy_user && proxy_pass
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proxy_user, proxy_pass = proxy_uri.userinfo.split(':') if proxy_uri.userinfo
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end
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if proxy_user && proxy_pass
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klass = Net::HTTP::Proxy(proxy_uri.hostname, proxy_uri.port, proxy_user, proxy_pass)
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else
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klass = Net::HTTP::Proxy(proxy_uri.hostname, proxy_uri.port)
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end
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end
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target_host = target.hostname
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target_port = target.port
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request_uri = target.request_uri
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else
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# FTP over HTTP proxy
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target_host = proxy_uri.hostname
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target_port = proxy_uri.port
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request_uri = target.to_s
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if proxy_user && proxy_pass
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header["Proxy-Authorization"] =
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'Basic ' + ["#{proxy_user}:#{proxy_pass}"].pack('m0')
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end
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end
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http = proxy ? klass.new(target_host, target_port) : klass.new(target_host, target_port, nil)
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if target.class == URI::HTTPS
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require 'net/https'
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http.use_ssl = true
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http.verify_mode = options[:ssl_verify_mode] || OpenSSL::SSL::VERIFY_PEER
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store = OpenSSL::X509::Store.new
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if options[:ssl_ca_cert]
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Array(options[:ssl_ca_cert]).each do |cert|
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if File.directory? cert
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store.add_path cert
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else
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store.add_file cert
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end
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end
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else
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store.set_default_paths
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end
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http.cert_store = store
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end
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if options.include? :read_timeout
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http.read_timeout = options[:read_timeout]
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end
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if options.include? :open_timeout
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http.open_timeout = options[:open_timeout]
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end
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resp = nil
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http.start {
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req = Net::HTTP::Get.new(request_uri, header)
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if options.include? :http_basic_authentication
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user, pass = options[:http_basic_authentication]
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req.basic_auth user, pass
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end
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http.request(req) {|response|
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resp = response
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if options[:content_length_proc] && Net::HTTPSuccess === resp
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if resp.key?('Content-Length')
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options[:content_length_proc].call(resp['Content-Length'].to_i)
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else
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options[:content_length_proc].call(nil)
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end
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end
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resp.read_body {|str|
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buf << str
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if options[:progress_proc] && Net::HTTPSuccess === resp
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options[:progress_proc].call(buf.size)
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end
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str.clear
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}
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}
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}
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io = buf.io
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io.rewind
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io.status = [resp.code, resp.message]
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resp.each_name {|name| buf.io.meta_add_field2 name, resp.get_fields(name) }
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case resp
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when Net::HTTPSuccess
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when Net::HTTPMovedPermanently, # 301
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Net::HTTPFound, # 302
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Net::HTTPSeeOther, # 303
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Net::HTTPTemporaryRedirect # 307
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begin
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loc_uri = URI.parse(resp['location'])
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rescue URI::InvalidURIError
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raise OpenURI::HTTPError.new(io.status.join(' ') + ' (Invalid Location URI)', io)
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end
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throw :open_uri_redirect, loc_uri
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else
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raise OpenURI::HTTPError.new(io.status.join(' '), io)
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end
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end
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class HTTPError < StandardError
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def initialize(message, io)
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super(message)
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@io = io
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end
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attr_reader :io
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end
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# Raised on redirection,
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# only occurs when +redirect+ option for HTTP is +false+.
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class HTTPRedirect < HTTPError
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def initialize(message, io, uri)
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super(message, io)
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@uri = uri
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end
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attr_reader :uri
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end
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class Buffer # :nodoc: all
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def initialize
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@io = StringIO.new
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@size = 0
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end
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attr_reader :size
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StringMax = 10240
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def <<(str)
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@io << str
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@size += str.length
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if StringIO === @io && StringMax < @size
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require 'tempfile'
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io = Tempfile.new('open-uri')
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io.binmode
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Meta.init io, @io if Meta === @io
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io << @io.string
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@io = io
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end
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end
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def io
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Meta.init @io unless Meta === @io
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@io
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end
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end
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# Mixin for holding meta-information.
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module Meta
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def Meta.init(obj, src=nil) # :nodoc:
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obj.extend Meta
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obj.instance_eval {
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@base_uri = nil
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@meta = {} # name to string. legacy.
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@metas = {} # name to array of strings.
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}
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if src
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obj.status = src.status
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obj.base_uri = src.base_uri
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src.metas.each {|name, values|
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obj.meta_add_field2(name, values)
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}
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end
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end
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# returns an Array that consists of status code and message.
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attr_accessor :status
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# returns a URI that is the base of relative URIs in the data.
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# It may differ from the URI supplied by a user due to redirection.
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attr_accessor :base_uri
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# returns a Hash that represents header fields.
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# The Hash keys are downcased for canonicalization.
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# The Hash values are a field body.
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# If there are multiple field with same field name,
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# the field values are concatenated with a comma.
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attr_reader :meta
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# returns a Hash that represents header fields.
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# The Hash keys are downcased for canonicalization.
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# The Hash value are an array of field values.
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attr_reader :metas
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def meta_setup_encoding # :nodoc:
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charset = self.charset
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enc = nil
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if charset
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begin
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enc = Encoding.find(charset)
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rescue ArgumentError
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end
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end
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enc = Encoding::ASCII_8BIT unless enc
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if self.respond_to? :force_encoding
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self.force_encoding(enc)
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elsif self.respond_to? :string
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self.string.force_encoding(enc)
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else # Tempfile
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self.set_encoding enc
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end
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end
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def meta_add_field2(name, values) # :nodoc:
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name = name.downcase
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@metas[name] = values
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@meta[name] = values.join(', ')
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meta_setup_encoding if name == 'content-type'
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end
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def meta_add_field(name, value) # :nodoc:
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meta_add_field2(name, [value])
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end
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# returns a Time that represents the Last-Modified field.
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def last_modified
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if vs = @metas['last-modified']
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v = vs.join(', ')
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Time.httpdate(v)
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else
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nil
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end
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end
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# :stopdoc:
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RE_LWS = /[\r\n\t ]+/n
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RE_TOKEN = %r{[^\x00- ()<>@,;:\\"/\[\]?={}\x7f]+}n
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RE_QUOTED_STRING = %r{"(?:[\r\n\t !#-\[\]-~\x80-\xff]|\\[\x00-\x7f])*"}n
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RE_PARAMETERS = %r{(?:;#{RE_LWS}?#{RE_TOKEN}#{RE_LWS}?=#{RE_LWS}?(?:#{RE_TOKEN}|#{RE_QUOTED_STRING})#{RE_LWS}?)*}n
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# :startdoc:
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def content_type_parse # :nodoc:
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vs = @metas['content-type']
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# The last (?:;#{RE_LWS}?)? matches extra ";" which violates RFC2045.
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if vs && %r{\A#{RE_LWS}?(#{RE_TOKEN})#{RE_LWS}?/(#{RE_TOKEN})#{RE_LWS}?(#{RE_PARAMETERS})(?:;#{RE_LWS}?)?\z}no =~ vs.join(', ')
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type = $1.downcase
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subtype = $2.downcase
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parameters = []
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$3.scan(/;#{RE_LWS}?(#{RE_TOKEN})#{RE_LWS}?=#{RE_LWS}?(?:(#{RE_TOKEN})|(#{RE_QUOTED_STRING}))/no) {|att, val, qval|
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if qval
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val = qval[1...-1].gsub(/[\r\n\t !#-\[\]-~\x80-\xff]+|(\\[\x00-\x7f])/n) { $1 ? $1[1,1] : $& }
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end
|
|
parameters << [att.downcase, val]
|
|
}
|
|
["#{type}/#{subtype}", *parameters]
|
|
else
|
|
nil
|
|
end
|
|
end
|
|
|
|
# returns "type/subtype" which is MIME Content-Type.
|
|
# It is downcased for canonicalization.
|
|
# Content-Type parameters are stripped.
|
|
def content_type
|
|
type, *_ = content_type_parse
|
|
type || 'application/octet-stream'
|
|
end
|
|
|
|
# returns a charset parameter in Content-Type field.
|
|
# It is downcased for canonicalization.
|
|
#
|
|
# If charset parameter is not given but a block is given,
|
|
# the block is called and its result is returned.
|
|
# It can be used to guess charset.
|
|
#
|
|
# If charset parameter and block is not given,
|
|
# nil is returned except text type.
|
|
# In that case, "utf-8" is returned as defined by RFC6838 4.2.1
|
|
def charset
|
|
type, *parameters = content_type_parse
|
|
if pair = parameters.assoc('charset')
|
|
pair.last.downcase
|
|
elsif block_given?
|
|
yield
|
|
elsif type && %r{\Atext/} =~ type
|
|
"utf-8" # RFC6838 4.2.1
|
|
else
|
|
nil
|
|
end
|
|
end
|
|
|
|
# Returns a list of encodings in Content-Encoding field as an array of
|
|
# strings.
|
|
#
|
|
# The encodings are downcased for canonicalization.
|
|
def content_encoding
|
|
vs = @metas['content-encoding']
|
|
if vs && %r{\A#{RE_LWS}?#{RE_TOKEN}#{RE_LWS}?(?:,#{RE_LWS}?#{RE_TOKEN}#{RE_LWS}?)*}o =~ (v = vs.join(', '))
|
|
v.scan(RE_TOKEN).map {|content_coding| content_coding.downcase}
|
|
else
|
|
[]
|
|
end
|
|
end
|
|
end
|
|
|
|
# Mixin for HTTP and FTP URIs.
|
|
module OpenRead
|
|
# OpenURI::OpenRead#open provides `open' for URI::HTTP and URI::FTP.
|
|
#
|
|
# OpenURI::OpenRead#open takes optional 3 arguments as:
|
|
#
|
|
# OpenURI::OpenRead#open([mode [, perm]] [, options]) [{|io| ... }]
|
|
#
|
|
# OpenURI::OpenRead#open returns an IO-like object if block is not given.
|
|
# Otherwise it yields the IO object and return the value of the block.
|
|
# The IO object is extended with OpenURI::Meta.
|
|
#
|
|
# +mode+ and +perm+ are the same as Kernel#open.
|
|
#
|
|
# However, +mode+ must be read mode because OpenURI::OpenRead#open doesn't
|
|
# support write mode (yet).
|
|
# Also +perm+ is ignored because it is meaningful only for file creation.
|
|
#
|
|
# +options+ must be a hash.
|
|
#
|
|
# Each option with a string key specifies an extra header field for HTTP.
|
|
# I.e., it is ignored for FTP without HTTP proxy.
|
|
#
|
|
# The hash may include other options, where keys are symbols:
|
|
#
|
|
# [:proxy]
|
|
# Synopsis:
|
|
# :proxy => "http://proxy.foo.com:8000/"
|
|
# :proxy => URI.parse("http://proxy.foo.com:8000/")
|
|
# :proxy => true
|
|
# :proxy => false
|
|
# :proxy => nil
|
|
#
|
|
# If :proxy option is specified, the value should be String, URI,
|
|
# boolean or nil.
|
|
#
|
|
# When String or URI is given, it is treated as proxy URI.
|
|
#
|
|
# When true is given or the option itself is not specified,
|
|
# environment variable `scheme_proxy' is examined.
|
|
# `scheme' is replaced by `http', `https' or `ftp'.
|
|
#
|
|
# When false or nil is given, the environment variables are ignored and
|
|
# connection will be made to a server directly.
|
|
#
|
|
# [:proxy_http_basic_authentication]
|
|
# Synopsis:
|
|
# :proxy_http_basic_authentication =>
|
|
# ["http://proxy.foo.com:8000/", "proxy-user", "proxy-password"]
|
|
# :proxy_http_basic_authentication =>
|
|
# [URI.parse("http://proxy.foo.com:8000/"),
|
|
# "proxy-user", "proxy-password"]
|
|
#
|
|
# If :proxy option is specified, the value should be an Array with 3
|
|
# elements. It should contain a proxy URI, a proxy user name and a proxy
|
|
# password. The proxy URI should be a String, an URI or nil. The proxy
|
|
# user name and password should be a String.
|
|
#
|
|
# If nil is given for the proxy URI, this option is just ignored.
|
|
#
|
|
# If :proxy and :proxy_http_basic_authentication is specified,
|
|
# ArgumentError is raised.
|
|
#
|
|
# [:http_basic_authentication]
|
|
# Synopsis:
|
|
# :http_basic_authentication=>[user, password]
|
|
#
|
|
# If :http_basic_authentication is specified,
|
|
# the value should be an array which contains 2 strings:
|
|
# username and password.
|
|
# It is used for HTTP Basic authentication defined by RFC 2617.
|
|
#
|
|
# [:content_length_proc]
|
|
# Synopsis:
|
|
# :content_length_proc => lambda {|content_length| ... }
|
|
#
|
|
# If :content_length_proc option is specified, the option value procedure
|
|
# is called before actual transfer is started.
|
|
# It takes one argument, which is expected content length in bytes.
|
|
#
|
|
# If two or more transfers are performed by HTTP redirection, the
|
|
# procedure is called only once for the last transfer.
|
|
#
|
|
# When expected content length is unknown, the procedure is called with
|
|
# nil. This happens when the HTTP response has no Content-Length header.
|
|
#
|
|
# [:progress_proc]
|
|
# Synopsis:
|
|
# :progress_proc => lambda {|size| ...}
|
|
#
|
|
# If :progress_proc option is specified, the proc is called with one
|
|
# argument each time when `open' gets content fragment from network.
|
|
# The argument +size+ is the accumulated transferred size in bytes.
|
|
#
|
|
# If two or more transfer is done by HTTP redirection, the procedure
|
|
# is called only one for a last transfer.
|
|
#
|
|
# :progress_proc and :content_length_proc are intended to be used for
|
|
# progress bar.
|
|
# For example, it can be implemented as follows using Ruby/ProgressBar.
|
|
#
|
|
# pbar = nil
|
|
# open("http://...",
|
|
# :content_length_proc => lambda {|t|
|
|
# if t && 0 < t
|
|
# pbar = ProgressBar.new("...", t)
|
|
# pbar.file_transfer_mode
|
|
# end
|
|
# },
|
|
# :progress_proc => lambda {|s|
|
|
# pbar.set s if pbar
|
|
# }) {|f| ... }
|
|
#
|
|
# [:read_timeout]
|
|
# Synopsis:
|
|
# :read_timeout=>nil (no timeout)
|
|
# :read_timeout=>10 (10 second)
|
|
#
|
|
# :read_timeout option specifies a timeout of read for http connections.
|
|
#
|
|
# [:open_timeout]
|
|
# Synopsis:
|
|
# :open_timeout=>nil (no timeout)
|
|
# :open_timeout=>10 (10 second)
|
|
#
|
|
# :open_timeout option specifies a timeout of open for http connections.
|
|
#
|
|
# [:ssl_ca_cert]
|
|
# Synopsis:
|
|
# :ssl_ca_cert=>filename or an Array of filenames
|
|
#
|
|
# :ssl_ca_cert is used to specify CA certificate for SSL.
|
|
# If it is given, default certificates are not used.
|
|
#
|
|
# [:ssl_verify_mode]
|
|
# Synopsis:
|
|
# :ssl_verify_mode=>mode
|
|
#
|
|
# :ssl_verify_mode is used to specify openssl verify mode.
|
|
#
|
|
# [:ftp_active_mode]
|
|
# Synopsis:
|
|
# :ftp_active_mode=>bool
|
|
#
|
|
# <tt>:ftp_active_mode => true</tt> is used to make ftp active mode.
|
|
# Ruby 1.9 uses passive mode by default.
|
|
# Note that the active mode is default in Ruby 1.8 or prior.
|
|
#
|
|
# [:redirect]
|
|
# Synopsis:
|
|
# :redirect=>bool
|
|
#
|
|
# +:redirect+ is true by default. <tt>:redirect => false</tt> is used to
|
|
# disable all HTTP redirects.
|
|
#
|
|
# OpenURI::HTTPRedirect exception raised on redirection.
|
|
# Using +true+ also means that redirections between http and ftp are
|
|
# permitted.
|
|
#
|
|
def open(*rest, &block)
|
|
OpenURI.open_uri(self, *rest, &block)
|
|
end
|
|
|
|
# OpenURI::OpenRead#read([ options ]) reads a content referenced by self and
|
|
# returns the content as string.
|
|
# The string is extended with OpenURI::Meta.
|
|
# The argument +options+ is same as OpenURI::OpenRead#open.
|
|
def read(options={})
|
|
self.open(options) {|f|
|
|
str = f.read
|
|
Meta.init str, f
|
|
str
|
|
}
|
|
end
|
|
end
|
|
end
|
|
|
|
module URI
|
|
class HTTP
|
|
def buffer_open(buf, proxy, options) # :nodoc:
|
|
OpenURI.open_http(buf, self, proxy, options)
|
|
end
|
|
|
|
include OpenURI::OpenRead
|
|
end
|
|
|
|
class FTP
|
|
def buffer_open(buf, proxy, options) # :nodoc:
|
|
if proxy
|
|
OpenURI.open_http(buf, self, proxy, options)
|
|
return
|
|
end
|
|
|
|
begin
|
|
require 'net/ftp'
|
|
rescue LoadError
|
|
abort "net/ftp is not found. You may need to `gem install net-ftp` to install net/ftp."
|
|
end
|
|
|
|
path = self.path
|
|
path = path.sub(%r{\A/}, '%2F') # re-encode the beginning slash because uri library decodes it.
|
|
directories = path.split(%r{/}, -1)
|
|
directories.each {|d|
|
|
d.gsub!(/%([0-9A-Fa-f][0-9A-Fa-f])/) { [$1].pack("H2") }
|
|
}
|
|
unless filename = directories.pop
|
|
raise ArgumentError, "no filename: #{self.inspect}"
|
|
end
|
|
directories.each {|d|
|
|
if /[\r\n]/ =~ d
|
|
raise ArgumentError, "invalid directory: #{d.inspect}"
|
|
end
|
|
}
|
|
if /[\r\n]/ =~ filename
|
|
raise ArgumentError, "invalid filename: #{filename.inspect}"
|
|
end
|
|
typecode = self.typecode
|
|
if typecode && /\A[aid]\z/ !~ typecode
|
|
raise ArgumentError, "invalid typecode: #{typecode.inspect}"
|
|
end
|
|
|
|
# The access sequence is defined by RFC 1738
|
|
ftp = Net::FTP.new
|
|
ftp.connect(self.hostname, self.port)
|
|
ftp.passive = !options[:ftp_active_mode]
|
|
# todo: extract user/passwd from .netrc.
|
|
user = 'anonymous'
|
|
passwd = nil
|
|
user, passwd = self.userinfo.split(/:/) if self.userinfo
|
|
ftp.login(user, passwd)
|
|
directories.each {|cwd|
|
|
ftp.voidcmd("CWD #{cwd}")
|
|
}
|
|
if typecode
|
|
# xxx: typecode D is not handled.
|
|
ftp.voidcmd("TYPE #{typecode.upcase}")
|
|
end
|
|
if options[:content_length_proc]
|
|
options[:content_length_proc].call(ftp.size(filename))
|
|
end
|
|
ftp.retrbinary("RETR #{filename}", 4096) { |str|
|
|
buf << str
|
|
options[:progress_proc].call(buf.size) if options[:progress_proc]
|
|
}
|
|
ftp.close
|
|
buf.io.rewind
|
|
end
|
|
|
|
include OpenURI::OpenRead
|
|
end
|
|
end
|