Class: Gem::Request

Inherits:
Object
  • Object
show all
Extended by:
UserInteraction
Includes:
UserInteraction
Defined in:
lib/rubygems/request.rb

Defined Under Namespace

Classes: ConnectionPools, HTTPPool, HTTPSPool

Class Method Summary collapse

Instance Method Summary collapse

Methods included from UserInteraction

alert, alert_error, alert_warning, ask, ask_for_password, ask_yes_no, choose_from_list, say, terminate_interaction, verbose

Methods included from DefaultUserInteraction

ui, #ui, #ui=, ui=, use_ui, #use_ui

Methods included from Text

#clean_text, #format_text, #levenshtein_distance, #min3, #truncate_text

Constructor Details

#initialize(uri, request_class, last_modified, pool) ⇒ Request

Returns a new instance of Request.


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# File 'lib/rubygems/request.rb', line 30

def initialize(uri, request_class, last_modified, pool)
  @uri = uri
  @request_class = request_class
  @last_modified = last_modified
  @requests = Hash.new 0
  @user_agent = user_agent

  @connection_pool = pool
end

Class Method Details

.configure_connection_for_https(connection, cert_files) ⇒ Object


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# File 'lib/rubygems/request.rb', line 48

def self.configure_connection_for_https(connection, cert_files)
  require 'net/https'
  connection.use_ssl = true
  connection.verify_mode =
    Gem.configuration.ssl_verify_mode || OpenSSL::SSL::VERIFY_PEER
  store = OpenSSL::X509::Store.new

  if Gem.configuration.ssl_client_cert
    pem = File.read Gem.configuration.ssl_client_cert
    connection.cert = OpenSSL::X509::Certificate.new pem
    connection.key = OpenSSL::PKey::RSA.new pem
  end

  store.set_default_paths
  cert_files.each do |ssl_cert_file|
    store.add_file ssl_cert_file
  end
  if Gem.configuration.ssl_ca_cert
    if File.directory? Gem.configuration.ssl_ca_cert
      store.add_path Gem.configuration.ssl_ca_cert
    else
      store.add_file Gem.configuration.ssl_ca_cert
    end
  end
  connection.cert_store = store

  connection.verify_callback = proc do |preverify_ok, store_context|
    verify_certificate store_context unless preverify_ok

    preverify_ok
  end

  connection
rescue LoadError => e
  raise unless (e.respond_to?(:path) && e.path == 'openssl') ||
               e.message =~ / -- openssl$/

  raise Gem::Exception.new(
          'Unable to require openssl, install OpenSSL and rebuild Ruby (preferred) or use non-HTTPS sources')
end

.create_with_proxy(uri, request_class, last_modified, proxy) ⇒ Object

Legacy. This is used in tests.


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# File 'lib/rubygems/request.rb', line 13

def self.create_with_proxy(uri, request_class, last_modified, proxy) # :nodoc:
  cert_files = get_cert_files
  proxy ||= get_proxy_from_env(uri.scheme)
  pool = ConnectionPools.new proxy_uri(proxy), cert_files

  new(uri, request_class, last_modified, pool.pool_for(uri))
end

.get_cert_filesObject


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# File 'lib/rubygems/request.rb', line 43

def self.get_cert_files
  pattern = File.expand_path("./ssl_certs/*/*.pem", File.dirname(__FILE__))
  Dir.glob(pattern)
end

.get_proxy_from_env(scheme = 'http') ⇒ Object

Returns a proxy URI for the given scheme if one is set in the environment variables.


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# File 'lib/rubygems/request.rb', line 165

def self.get_proxy_from_env(scheme = 'http')
  _scheme = scheme.downcase
  _SCHEME = scheme.upcase
  env_proxy = ENV["#{_scheme}_proxy"] || ENV["#{_SCHEME}_PROXY"]

  no_env_proxy = env_proxy.nil? || env_proxy.empty?

  if no_env_proxy
    return (_scheme == 'https' || _scheme == 'http') ?
      :no_proxy : get_proxy_from_env('http')
  end

  require "uri"
  uri = URI(Gem::UriFormatter.new(env_proxy).normalize)

  if uri and uri.user.nil? and uri.password.nil?
    user     = ENV["#{_scheme}_proxy_user"] || ENV["#{_SCHEME}_PROXY_USER"]
    password = ENV["#{_scheme}_proxy_pass"] || ENV["#{_SCHEME}_PROXY_PASS"]

    uri.user     = Gem::UriFormatter.new(user).escape
    uri.password = Gem::UriFormatter.new(password).escape
  end

  uri
end

.proxy_uri(proxy) ⇒ Object

:nodoc:


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# File 'lib/rubygems/request.rb', line 21

def self.proxy_uri(proxy) # :nodoc:
  require "uri"
  case proxy
  when :no_proxy then nil
  when URI::HTTP then proxy
  else URI.parse(proxy)
  end
end

.verify_certificate(store_context) ⇒ Object


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# File 'lib/rubygems/request.rb', line 89

def self.verify_certificate(store_context)
  depth  = store_context.error_depth
  error  = store_context.error_string
  number = store_context.error
  cert   = store_context.current_cert

  ui.alert_error "SSL verification error at depth #{depth}: #{error} (#{number})"

  extra_message = verify_certificate_message number, cert

  ui.alert_error extra_message if extra_message
end

.verify_certificate_message(error_number, cert) ⇒ Object


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# File 'lib/rubygems/request.rb', line 102

def self.verify_certificate_message(error_number, cert)
  return unless cert
  case error_number
  when OpenSSL::X509::V_ERR_CERT_HAS_EXPIRED then
    "Certificate #{cert.subject} expired at #{cert.not_after.iso8601}"
  when OpenSSL::X509::V_ERR_CERT_NOT_YET_VALID then
    "Certificate #{cert.subject} not valid until #{cert.not_before.iso8601}"
  when OpenSSL::X509::V_ERR_CERT_REJECTED then
    "Certificate #{cert.subject} is rejected"
  when OpenSSL::X509::V_ERR_CERT_UNTRUSTED then
    "Certificate #{cert.subject} is not trusted"
  when OpenSSL::X509::V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT then
    "Certificate #{cert.issuer} is not trusted"
  when OpenSSL::X509::V_ERR_INVALID_CA then
    "Certificate #{cert.subject} is an invalid CA certificate"
  when OpenSSL::X509::V_ERR_INVALID_PURPOSE then
    "Certificate #{cert.subject} has an invalid purpose"
  when OpenSSL::X509::V_ERR_SELF_SIGNED_CERT_IN_CHAIN then
    "Root certificate is not trusted (#{cert.subject})"
  when OpenSSL::X509::V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY then
    "You must add #{cert.issuer} to your local trusted store"
  when
    OpenSSL::X509::V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE then
    "Cannot verify certificate issued by #{cert.issuer}"
  end
end

Instance Method Details

#cert_filesObject


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# File 'lib/rubygems/request.rb', line 41

def cert_files; @connection_pool.cert_files; end

#connection_for(uri) ⇒ Object

Creates or an HTTP connection based on uri, or retrieves an existing connection, using a proxy if needed.


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# File 'lib/rubygems/request.rb', line 133

def connection_for(uri)
  @connection_pool.checkout
rescue defined?(OpenSSL::SSL) ? OpenSSL::SSL::SSLError : Errno::EHOSTDOWN,
       Errno::EHOSTDOWN => e
  raise Gem::RemoteFetcher::FetchError.new(e.message, uri)
end

#fetch {|request| ... } ⇒ Object

Yields:

  • (request)

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# File 'lib/rubygems/request.rb', line 140

def fetch
  request = @request_class.new @uri.request_uri

  unless @uri.nil? || @uri.user.nil? || @uri.user.empty?
    request.basic_auth Gem::UriFormatter.new(@uri.user).unescape,
                       Gem::UriFormatter.new(@uri.password).unescape
  end

  request.add_field 'User-Agent', @user_agent
  request.add_field 'Connection', 'keep-alive'
  request.add_field 'Keep-Alive', '30'

  if @last_modified
    request.add_field 'If-Modified-Since', @last_modified.httpdate
  end

  yield request if block_given?

  perform_request request
end

#perform_request(request) ⇒ Object

:nodoc:


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# File 'lib/rubygems/request.rb', line 191

def perform_request(request) # :nodoc:
  connection = connection_for @uri

  retried = false
  bad_response = false

  begin
    @requests[connection.object_id] += 1

    verbose "#{request.method} #{@uri}"

    file_name = File.basename(@uri.path)
    # perform download progress reporter only for gems
    if request.response_body_permitted? && file_name =~ /\.gem$/
      reporter = ui.download_reporter
      response = connection.request(request) do |incomplete_response|
        if Net::HTTPOK === incomplete_response
          reporter.fetch(file_name, incomplete_response.content_length)
          downloaded = 0
          data = String.new

          incomplete_response.read_body do |segment|
            data << segment
            downloaded += segment.length
            reporter.update(downloaded)
          end
          reporter.done
          if incomplete_response.respond_to? :body=
            incomplete_response.body = data
          else
            incomplete_response.instance_variable_set(:@body, data)
          end
        end
      end
    else
      response = connection.request request
    end

    verbose "#{response.code} #{response.message}"

  rescue Net::HTTPBadResponse
    verbose "bad response"

    reset connection

    raise Gem::RemoteFetcher::FetchError.new('too many bad responses', @uri) if bad_response

    bad_response = true
    retry
  rescue Net::HTTPFatalError
    verbose "fatal error"

    raise Gem::RemoteFetcher::FetchError.new('fatal error', @uri)
  # HACK work around EOFError bug in Net::HTTP
  # NOTE Errno::ECONNABORTED raised a lot on Windows, and make impossible
  # to install gems.
  rescue EOFError, Timeout::Error,
         Errno::ECONNABORTED, Errno::ECONNRESET, Errno::EPIPE

    requests = @requests[connection.object_id]
    verbose "connection reset after #{requests} requests, retrying"

    raise Gem::RemoteFetcher::FetchError.new('too many connection resets', @uri) if retried

    reset connection

    retried = true
    retry
  end

  response
ensure
  @connection_pool.checkin connection
end

#proxy_uriObject


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# File 'lib/rubygems/request.rb', line 40

def proxy_uri; @connection_pool.proxy_uri; end

#reset(connection) ⇒ Object

Resets HTTP connection connection.


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# File 'lib/rubygems/request.rb', line 269

def reset(connection)
  @requests.delete connection.object_id

  connection.finish
  connection.start
end

#user_agentObject


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# File 'lib/rubygems/request.rb', line 276

def user_agent
  ua = "RubyGems/#{Gem::VERSION} #{Gem::Platform.local}".dup

  ruby_version = RUBY_VERSION
  ruby_version += 'dev' if RUBY_PATCHLEVEL == -1

  ua << " Ruby/#{ruby_version} (#{RUBY_RELEASE_DATE}"
  if RUBY_PATCHLEVEL >= 0
    ua << " patchlevel #{RUBY_PATCHLEVEL}"
  elsif defined?(RUBY_REVISION)
    ua << " revision #{RUBY_REVISION}"
  end
  ua << ")"

  ua << " #{RUBY_ENGINE}" if RUBY_ENGINE != 'ruby'

  ua
end