/usr/lib/ruby/2.5.0/webrick/cgi.rb is in libruby2.5 2.5.1-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 | # frozen_string_literal: false
#
# cgi.rb -- Yet another CGI library
#
# Author: IPR -- Internet Programming with Ruby -- writers
# Copyright (c) 2003 Internet Programming with Ruby writers. All rights
# reserved.
#
# $Id: cgi.rb 63006 2018-03-28 12:50:56Z naruse $
require "webrick/httprequest"
require "webrick/httpresponse"
require "webrick/config"
require "stringio"
module WEBrick
# A CGI library using WEBrick requests and responses.
#
# Example:
#
# class MyCGI < WEBrick::CGI
# def do_GET req, res
# res.body = 'it worked!'
# res.status = 200
# end
# end
#
# MyCGI.new.start
class CGI
# The CGI error exception class
CGIError = Class.new(StandardError)
##
# The CGI configuration. This is based on WEBrick::Config::HTTP
attr_reader :config
##
# The CGI logger
attr_reader :logger
##
# Creates a new CGI interface.
#
# The first argument in +args+ is a configuration hash which would update
# WEBrick::Config::HTTP.
#
# Any remaining arguments are stored in the <code>@options</code> instance
# variable for use by a subclass.
def initialize(*args)
if defined?(MOD_RUBY)
unless ENV.has_key?("GATEWAY_INTERFACE")
Apache.request.setup_cgi_env
end
end
if %r{HTTP/(\d+\.\d+)} =~ ENV["SERVER_PROTOCOL"]
httpv = $1
end
@config = WEBrick::Config::HTTP.dup.update(
:ServerSoftware => ENV["SERVER_SOFTWARE"] || "null",
:HTTPVersion => HTTPVersion.new(httpv || "1.0"),
:RunOnCGI => true, # to detect if it runs on CGI.
:NPH => false # set true to run as NPH script.
)
if config = args.shift
@config.update(config)
end
@config[:Logger] ||= WEBrick::BasicLog.new($stderr)
@logger = @config[:Logger]
@options = args
end
##
# Reads +key+ from the configuration
def [](key)
@config[key]
end
##
# Starts the CGI process with the given environment +env+ and standard
# input and output +stdin+ and +stdout+.
def start(env=ENV, stdin=$stdin, stdout=$stdout)
sock = WEBrick::CGI::Socket.new(@config, env, stdin, stdout)
req = HTTPRequest.new(@config)
res = HTTPResponse.new(@config)
unless @config[:NPH] or defined?(MOD_RUBY)
def res.setup_header
unless @header["status"]
phrase = HTTPStatus::reason_phrase(@status)
@header["status"] = "#{@status} #{phrase}"
end
super
end
def res.status_line
""
end
end
begin
req.parse(sock)
req.script_name = (env["SCRIPT_NAME"] || File.expand_path($0)).dup
req.path_info = (env["PATH_INFO"] || "").dup
req.query_string = env["QUERY_STRING"]
req.user = env["REMOTE_USER"]
res.request_method = req.request_method
res.request_uri = req.request_uri
res.request_http_version = req.http_version
res.keep_alive = req.keep_alive?
self.service(req, res)
rescue HTTPStatus::Error => ex
res.set_error(ex)
rescue HTTPStatus::Status => ex
res.status = ex.code
rescue Exception => ex
@logger.error(ex)
res.set_error(ex, true)
ensure
req.fixup
if defined?(MOD_RUBY)
res.setup_header
Apache.request.status_line = "#{res.status} #{res.reason_phrase}"
Apache.request.status = res.status
table = Apache.request.headers_out
res.header.each{|key, val|
case key
when /^content-encoding$/i
Apache::request.content_encoding = val
when /^content-type$/i
Apache::request.content_type = val
else
table[key] = val.to_s
end
}
res.cookies.each{|cookie|
table.add("Set-Cookie", cookie.to_s)
}
Apache.request.send_http_header
res.send_body(sock)
else
res.send_response(sock)
end
end
end
##
# Services the request +req+ which will fill in the response +res+. See
# WEBrick::HTTPServlet::AbstractServlet#service for details.
def service(req, res)
method_name = "do_" + req.request_method.gsub(/-/, "_")
if respond_to?(method_name)
__send__(method_name, req, res)
else
raise HTTPStatus::MethodNotAllowed,
"unsupported method `#{req.request_method}'."
end
end
##
# Provides HTTP socket emulation from the CGI environment
class Socket # :nodoc:
include Enumerable
private
def initialize(config, env, stdin, stdout)
@config = config
@env = env
@header_part = StringIO.new
@body_part = stdin
@out_port = stdout
@out_port.binmode
@server_addr = @env["SERVER_ADDR"] || "0.0.0.0"
@server_name = @env["SERVER_NAME"]
@server_port = @env["SERVER_PORT"]
@remote_addr = @env["REMOTE_ADDR"]
@remote_host = @env["REMOTE_HOST"] || @remote_addr
@remote_port = @env["REMOTE_PORT"] || 0
begin
@header_part << request_line << CRLF
setup_header
@header_part << CRLF
@header_part.rewind
rescue Exception
raise CGIError, "invalid CGI environment"
end
end
def request_line
meth = @env["REQUEST_METHOD"] || "GET"
unless url = @env["REQUEST_URI"]
url = (@env["SCRIPT_NAME"] || File.expand_path($0)).dup
url << @env["PATH_INFO"].to_s
url = WEBrick::HTTPUtils.escape_path(url)
if query_string = @env["QUERY_STRING"]
unless query_string.empty?
url << "?" << query_string
end
end
end
# we cannot get real HTTP version of client ;)
httpv = @config[:HTTPVersion]
return "#{meth} #{url} HTTP/#{httpv}"
end
def setup_header
@env.each{|key, value|
case key
when "CONTENT_TYPE", "CONTENT_LENGTH"
add_header(key.gsub(/_/, "-"), value)
when /^HTTP_(.*)/
add_header($1.gsub(/_/, "-"), value)
end
}
end
def add_header(hdrname, value)
unless value.empty?
@header_part << hdrname << ": " << value << CRLF
end
end
def input
@header_part.eof? ? @body_part : @header_part
end
public
def peeraddr
[nil, @remote_port, @remote_host, @remote_addr]
end
def addr
[nil, @server_port, @server_name, @server_addr]
end
def gets(eol=LF, size=nil)
input.gets(eol, size)
end
def read(size=nil)
input.read(size)
end
def each
input.each{|line| yield(line) }
end
def eof?
input.eof?
end
def <<(data)
@out_port << data
end
def write(data)
@out_port.write(data)
end
def cert
return nil unless defined?(OpenSSL)
if pem = @env["SSL_SERVER_CERT"]
OpenSSL::X509::Certificate.new(pem) unless pem.empty?
end
end
def peer_cert
return nil unless defined?(OpenSSL)
if pem = @env["SSL_CLIENT_CERT"]
OpenSSL::X509::Certificate.new(pem) unless pem.empty?
end
end
def peer_cert_chain
return nil unless defined?(OpenSSL)
if @env["SSL_CLIENT_CERT_CHAIN_0"]
keys = @env.keys
certs = keys.sort.collect{|k|
if /^SSL_CLIENT_CERT_CHAIN_\d+$/ =~ k
if pem = @env[k]
OpenSSL::X509::Certificate.new(pem) unless pem.empty?
end
end
}
certs.compact
end
end
def cipher
return nil unless defined?(OpenSSL)
if cipher = @env["SSL_CIPHER"]
ret = [ cipher ]
ret << @env["SSL_PROTOCOL"]
ret << @env["SSL_CIPHER_USEKEYSIZE"]
ret << @env["SSL_CIPHER_ALGKEYSIZE"]
ret
end
end
end
end
end
|