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#!/usr/bin/env ruby # Phusion Passenger - https://www.phusionpassenger.com/ # Copyright (c) 2010-2025 Asynchronous B.V. # # "Passenger", "Phusion Passenger" and "Union Station" are registered # trademarks of Asynchronous B.V. # # 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. STDOUT.sync = true STDERR.sync = true require 'uri' require 'socket' require 'timeout' require 'base64' class PrespawnLocation class InvalidURLError < RuntimeError def initialize(url) @url = url end def to_s message end def message "'#{@url}' is not a valid URL." end end def self.parse(url) uri = uri_for(url) if uri.scheme == 'unix' \|\| uri.host == 'unix' location = UNIXPrespawnLocation.new(uri) else case uri.scheme when 'http' location = TCPPrespawnLocation.new(uri) when 'https' location = SSLPrespawnLocation.new(uri) end end unless location raise InvalidURLError, url end location end def self.uri_for(url) URI.parse(url) rescue URI::InvalidURIError raise InvalidURLError, url end def initialize(uri) @uri = uri end def request_path @uri.path.empty? ? '/' : @uri.path end def request_host @uri.host end def socket @socket \|\|= connect end if Base64.respond_to?(:strict_encode64) def base64(data) Base64.strict_encode64(data) end else # Base64-encodes the given data. Newlines are removed. # This is like `Base64.strict_encode64`, but also works # on Ruby 1.8 which doesn't have that method. def base64(data) result = Base64.encode64(data) result.delete!("\n") result end end def head_request socket.write("HEAD #{request_path} HTTP/1.1\r\n") socket.write("Host: #{request_host}\r\n") socket.write("User-Agent: Passenger Prespawn Script\r\n") socket.write("Authorization: Basic " + base64(@uri.userinfo) + "\r\n") if @uri.userinfo socket.write("Connection: close\r\n") socket.write("\r\n") begin Timeout.timeout(10) do socket.read end rescue Timeout::Error end end end class TCPPrespawnLocation < PrespawnLocation def request_port @uri.port end def connect TCPSocket.new('127.0.0.1', request_port) rescue Errno::ECONNREFUSED TCPSocket.new('::1', request_port) end end class SSLPrespawnLocation < TCPPrespawnLocation def connect require 'openssl' socket = OpenSSL::SSL::SSLSocket.new(super) socket.sync_close = true socket.connect socket end end class UNIXPrespawnLocation < PrespawnLocation def request_path super.split(':', 2).last end def request_host '_' end def socket_path @uri.path.split(':', 2).first end def connect UNIXSocket.new(socket_path) end end url = ARGV[0] begin prespawn_location = PrespawnLocation.parse(url) rescue PrespawnLocation::InvalidURLError => e STDERR.puts "*** ERROR: #{e}" exit 1 end prespawn_location.head_request