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cgi.rb
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cgi.rb
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#
# cgi.rb - cgi support library
#
# Copyright (C) 2000 Network Applied Communication Laboratory, Inc.
#
# Copyright (C) 2000 Information-technology Promotion Agency, Japan
#
# Author: Wakou Aoyama <wakou@ruby-lang.org>
#
# Documentation: Wakou Aoyama (RDoc'd and embellished by William Webber)
#
# == Overview
#
# The Common Gateway Interface (CGI) is a simple protocol
# for passing an HTTP request from a web server to a
# standalone program, and returning the output to the web
# browser. Basically, a CGI program is called with the
# parameters of the request passed in either in the
# environment (GET) or via $stdin (POST), and everything
# it prints to $stdout is returned to the client.
#
# This file holds the +CGI+ class. This class provides
# functionality for retrieving HTTP request parameters,
# managing cookies, and generating HTML output. See the
# class documentation for more details and examples of use.
#
# The file cgi/session.rb provides session management
# functionality; see that file for more details.
#
# See http://www.w3.org/CGI/ for more information on the CGI
# protocol.
raise "Please, use ruby 1.5.4 or later." if RUBY_VERSION < "1.5.4"
require 'English'
# CGI class. See documentation for the file cgi.rb for an overview
# of the CGI protocol.
#
# == Introduction
#
# CGI is a large class, providing several categories of methods, many of which
# are mixed in from other modules. Some of the documentation is in this class,
# some in the modules CGI::QueryExtension and CGI::HtmlExtension. See
# CGI::Cookie for specific information on handling cookies, and cgi/session.rb
# (CGI::Session) for information on sessions.
#
# For queries, CGI provides methods to get at environmental variables,
# parameters, cookies, and multipart request data. For responses, CGI provides
# methods for writing output and generating HTML.
#
# Read on for more details. Examples are provided at the bottom.
#
# == Queries
#
# The CGI class dynamically mixes in parameter and cookie-parsing
# functionality, environmental variable access, and support for
# parsing multipart requests (including uploaded files) from the
# CGI::QueryExtension module.
#
# === Environmental Variables
#
# The standard CGI environmental variables are available as read-only
# attributes of a CGI object. The following is a list of these variables:
#
#
# AUTH_TYPE HTTP_HOST REMOTE_IDENT
# CONTENT_LENGTH HTTP_NEGOTIATE REMOTE_USER
# CONTENT_TYPE HTTP_PRAGMA REQUEST_METHOD
# GATEWAY_INTERFACE HTTP_REFERER SCRIPT_NAME
# HTTP_ACCEPT HTTP_USER_AGENT SERVER_NAME
# HTTP_ACCEPT_CHARSET PATH_INFO SERVER_PORT
# HTTP_ACCEPT_ENCODING PATH_TRANSLATED SERVER_PROTOCOL
# HTTP_ACCEPT_LANGUAGE QUERY_STRING SERVER_SOFTWARE
# HTTP_CACHE_CONTROL REMOTE_ADDR
# HTTP_FROM REMOTE_HOST
#
#
# For each of these variables, there is a corresponding attribute with the
# same name, except all lower case and without a preceding HTTP_.
# +content_length+ and +server_port+ are integers; the rest are strings.
#
# === Parameters
#
# The method #params() returns a hash of all parameters in the request as
# name/value-list pairs, where the value-list is an Array of one or more
# values. The CGI object itself also behaves as a hash of parameter names
# to values, but only returns a single value (as a String) for each
# parameter name.
#
# For instance, suppose the request contains the parameter
# "favourite_colours" with the multiple values "blue" and "green". The
# following behaviour would occur:
#
# cgi.params["favourite_colours"] # => ["blue", "green"]
# cgi["favourite_colours"] # => "blue"
#
# If a parameter does not exist, the former method will return an empty
# array, the latter an empty string. The simplest way to test for existence
# of a parameter is by the #has_key? method.
#
# === Cookies
#
# HTTP Cookies are automatically parsed from the request. They are available
# from the #cookies() accessor, which returns a hash from cookie name to
# CGI::Cookie object.
#
# === Multipart requests
#
# If a request's method is POST and its content type is multipart/form-data,
# then it may contain uploaded files. These are stored by the QueryExtension
# module in the parameters of the request. The parameter name is the name
# attribute of the file input field, as usual. However, the value is not
# a string, but an IO object, either an IOString for small files, or a
# Tempfile for larger ones. This object also has the additional singleton
# methods:
#
# #local_path():: the path of the uploaded file on the local filesystem
# #original_filename():: the name of the file on the client computer
# #content_type():: the content type of the file
#
# == Responses
#
# The CGI class provides methods for sending header and content output to
# the HTTP client, and mixes in methods for programmatic HTML generation
# from CGI::HtmlExtension and CGI::TagMaker modules. The precise version of HTML
# to use for HTML generation is specified at object creation time.
#
# === Writing output
#
# The simplest way to send output to the HTTP client is using the #out() method.
# This takes the HTTP headers as a hash parameter, and the body content
# via a block. The headers can be generated as a string using the #header()
# method. The output stream can be written directly to using the #print()
# method.
#
# === Generating HTML
#
# Each HTML element has a corresponding method for generating that
# element as a String. The name of this method is the same as that
# of the element, all lowercase. The attributes of the element are
# passed in as a hash, and the body as a no-argument block that evaluates
# to a String. The HTML generation module knows which elements are
# always empty, and silently drops any passed-in body. It also knows
# which elements require matching closing tags and which don't. However,
# it does not know what attributes are legal for which elements.
#
# There are also some additional HTML generation methods mixed in from
# the CGI::HtmlExtension module. These include individual methods for the
# different types of form inputs, and methods for elements that commonly
# take particular attributes where the attributes can be directly specified
# as arguments, rather than via a hash.
#
# == Examples of use
#
# === Get form values
#
# require "cgi"
# cgi = CGI.new
# value = cgi['field_name'] # <== value string for 'field_name'
# # if not 'field_name' included, then return "".
# fields = cgi.keys # <== array of field names
#
# # returns true if form has 'field_name'
# cgi.has_key?('field_name')
# cgi.has_key?('field_name')
# cgi.include?('field_name')
#
# CAUTION! cgi['field_name'] returned an Array with the old
# cgi.rb(included in ruby 1.6)
#
# === Get form values as hash
#
# require "cgi"
# cgi = CGI.new
# params = cgi.params
#
# cgi.params is a hash.
#
# cgi.params['new_field_name'] = ["value"] # add new param
# cgi.params['field_name'] = ["new_value"] # change value
# cgi.params.delete('field_name') # delete param
# cgi.params.clear # delete all params
#
#
# === Save form values to file
#
# require "pstore"
# db = PStore.new("query.db")
# db.transaction do
# db["params"] = cgi.params
# end
#
#
# === Restore form values from file
#
# require "pstore"
# db = PStore.new("query.db")
# db.transaction do
# cgi.params = db["params"]
# end
#
#
# === Get multipart form values
#
# require "cgi"
# cgi = CGI.new
# value = cgi['field_name'] # <== value string for 'field_name'
# value.read # <== body of value
# value.local_path # <== path to local file of value
# value.original_filename # <== original filename of value
# value.content_type # <== content_type of value
#
# and value has StringIO or Tempfile class methods.
#
# === Get cookie values
#
# require "cgi"
# cgi = CGI.new
# values = cgi.cookies['name'] # <== array of 'name'
# # if not 'name' included, then return [].
# names = cgi.cookies.keys # <== array of cookie names
#
# and cgi.cookies is a hash.
#
# === Get cookie objects
#
# require "cgi"
# cgi = CGI.new
# for name, cookie in cgi.cookies
# cookie.expires = Time.now + 30
# end
# cgi.out("cookie" => cgi.cookies) {"string"}
#
# cgi.cookies # { "name1" => cookie1, "name2" => cookie2, ... }
#
# require "cgi"
# cgi = CGI.new
# cgi.cookies['name'].expires = Time.now + 30
# cgi.out("cookie" => cgi.cookies['name']) {"string"}
#
# === Print http header and html string to $DEFAULT_OUTPUT ($>)
#
# require "cgi"
# cgi = CGI.new("html3") # add HTML generation methods
# cgi.out() do
# cgi.html() do
# cgi.head{ cgi.title{"TITLE"} } +
# cgi.body() do
# cgi.form() do
# cgi.textarea("get_text") +
# cgi.br +
# cgi.submit
# end +
# cgi.pre() do
# CGI::escapeHTML(
# "params: " + cgi.params.inspect + "\n" +
# "cookies: " + cgi.cookies.inspect + "\n" +
# ENV.collect() do |key, value|
# key + " --> " + value + "\n"
# end.join("")
# )
# end
# end
# end
# end
#
# # add HTML generation methods
# CGI.new("html3") # html3.2
# CGI.new("html4") # html4.01 (Strict)
# CGI.new("html4Tr") # html4.01 Transitional
# CGI.new("html4Fr") # html4.01 Frameset
#
class CGI
# :stopdoc:
# String for carriage return
CR = "\015"
# String for linefeed
LF = "\012"
# Standard internet newline sequence
EOL = CR + LF
REVISION = '$Id$' #:nodoc:
NEEDS_BINMODE = true if /WIN/ni.match(RUBY_PLATFORM)
# Path separators in different environments.
PATH_SEPARATOR = {'UNIX'=>'/', 'WINDOWS'=>'\\', 'MACINTOSH'=>':'}
# HTTP status codes.
HTTP_STATUS = {
"OK" => "200 OK",
"PARTIAL_CONTENT" => "206 Partial Content",
"MULTIPLE_CHOICES" => "300 Multiple Choices",
"MOVED" => "301 Moved Permanently",
"REDIRECT" => "302 Found",
"NOT_MODIFIED" => "304 Not Modified",
"BAD_REQUEST" => "400 Bad Request",
"AUTH_REQUIRED" => "401 Authorization Required",
"FORBIDDEN" => "403 Forbidden",
"NOT_FOUND" => "404 Not Found",
"METHOD_NOT_ALLOWED" => "405 Method Not Allowed",
"NOT_ACCEPTABLE" => "406 Not Acceptable",
"LENGTH_REQUIRED" => "411 Length Required",
"PRECONDITION_FAILED" => "412 Precondition Failed",
"SERVER_ERROR" => "500 Internal Server Error",
"NOT_IMPLEMENTED" => "501 Method Not Implemented",
"BAD_GATEWAY" => "502 Bad Gateway",
"VARIANT_ALSO_VARIES" => "506 Variant Also Negotiates"
}
# Abbreviated day-of-week names specified by RFC 822
RFC822_DAYS = %w[ Sun Mon Tue Wed Thu Fri Sat ]
# Abbreviated month names specified by RFC 822
RFC822_MONTHS = %w[ Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ]
# :startdoc:
def env_table
ENV
end
def stdinput
$stdin
end
def stdoutput
$DEFAULT_OUTPUT
end
private :env_table, :stdinput, :stdoutput
# URL-encode a string.
# url_encoded_string = CGI::escape("'Stop!' said Fred")
# # => "%27Stop%21%27+said+Fred"
def CGI::escape(string)
string.gsub(/([^ a-zA-Z0-9_.-]+)/n) do
'%' + $1.unpack('H2' * $1.size).join('%').upcase
end.tr(' ', '+')
end
# URL-decode a string.
# string = CGI::unescape("%27Stop%21%27+said+Fred")
# # => "'Stop!' said Fred"
def CGI::unescape(string)
string.tr('+', ' ').gsub(/((?:%[0-9a-fA-F]{2})+)/n) do
[$1.delete('%')].pack('H*')
end
end
# Escape special characters in HTML, namely &\"<>
# CGI::escapeHTML('Usage: foo "bar" <baz>')
# # => "Usage: foo "bar" <baz>"
def CGI::escapeHTML(string)
string.gsub(/&/n, '&').gsub(/\"/n, '"').gsub(/>/n, '>').gsub(/</n, '<')
end
# Unescape a string that has been HTML-escaped
# CGI::unescapeHTML("Usage: foo "bar" <baz>")
# # => "Usage: foo \"bar\" <baz>"
def CGI::unescapeHTML(string)
string.gsub(/&(amp|quot|gt|lt|\#[0-9]+|\#x[0-9A-Fa-f]+);/n) do
match = $1.dup
case match
when 'amp' then '&'
when 'quot' then '"'
when 'gt' then '>'
when 'lt' then '<'
when /\A#0*(\d+)\z/n then
if Integer($1) < 256
Integer($1).chr
else
if Integer($1) < 65536 and ($KCODE[0] == ?u or $KCODE[0] == ?U)
[Integer($1)].pack("U")
else
"&##{$1};"
end
end
when /\A#x([0-9a-f]+)\z/ni then
if $1.hex < 256
$1.hex.chr
else
if $1.hex < 65536 and ($KCODE[0] == ?u or $KCODE[0] == ?U)
[$1.hex].pack("U")
else
"&#x#{$1};"
end
end
else
"&#{match};"
end
end
end
# Escape only the tags of certain HTML elements in +string+.
#
# Takes an element or elements or array of elements. Each element
# is specified by the name of the element, without angle brackets.
# This matches both the start and the end tag of that element.
# The attribute list of the open tag will also be escaped (for
# instance, the double-quotes surrounding attribute values).
#
# print CGI::escapeElement('<BR><A HREF="url"></A>', "A", "IMG")
# # "<BR><A HREF="url"></A>"
#
# print CGI::escapeElement('<BR><A HREF="url"></A>', ["A", "IMG"])
# # "<BR><A HREF="url"></A>"
def CGI::escapeElement(string, *elements)
elements = elements[0] if elements[0].kind_of?(Array)
unless elements.empty?
string.gsub(/<\/?(?:#{elements.join("|")})(?!\w)(?:.|\n)*?>/ni) do
CGI::escapeHTML($&)
end
else
string
end
end
# Undo escaping such as that done by CGI::escapeElement()
#
# print CGI::unescapeElement(
# CGI::escapeHTML('<BR><A HREF="url"></A>'), "A", "IMG")
# # "<BR><A HREF="url"></A>"
#
# print CGI::unescapeElement(
# CGI::escapeHTML('<BR><A HREF="url"></A>'), ["A", "IMG"])
# # "<BR><A HREF="url"></A>"
def CGI::unescapeElement(string, *elements)
elements = elements[0] if elements[0].kind_of?(Array)
unless elements.empty?
string.gsub(/<\/?(?:#{elements.join("|")})(?!\w)(?:.|\n)*?>/ni) do
CGI::unescapeHTML($&)
end
else
string
end
end
# Format a +Time+ object as a String using the format specified by RFC 1123.
#
# CGI::rfc1123_date(Time.now)
# # Sat, 01 Jan 2000 00:00:00 GMT
def CGI::rfc1123_date(time)
t = time.clone.gmtime
return format("%s, %.2d %s %.4d %.2d:%.2d:%.2d GMT",
RFC822_DAYS[t.wday], t.day, RFC822_MONTHS[t.month-1], t.year,
t.hour, t.min, t.sec)
end
# Create an HTTP header block as a string.
#
# Includes the empty line that ends the header block.
#
# +options+ can be a string specifying the Content-Type (defaults
# to text/html), or a hash of header key/value pairs. The following
# header keys are recognized:
#
# type:: the Content-Type header. Defaults to "text/html"
# charset:: the charset of the body, appended to the Content-Type header.
# nph:: a boolean value. If true, prepend protocol string and status code, and
# date; and sets default values for "server" and "connection" if not
# explicitly set.
# status:: the HTTP status code, returned as the Status header. See the
# list of available status codes below.
# server:: the server software, returned as the Server header.
# connection:: the connection type, returned as the Connection header (for
# instance, "close".
# length:: the length of the content that will be sent, returned as the
# Content-Length header.
# language:: the language of the content, returned as the Content-Language
# header.
# expires:: the time on which the current content expires, as a +Time+
# object, returned as the Expires header.
# cookie:: a cookie or cookies, returned as one or more Set-Cookie headers.
# The value can be the literal string of the cookie; a CGI::Cookie
# object; an Array of literal cookie strings or Cookie objects; or a
# hash all of whose values are literal cookie strings or Cookie objects.
# These cookies are in addition to the cookies held in the
# @output_cookies field.
#
# Other header lines can also be set; they are appended as key: value.
#
# header
# # Content-Type: text/html
#
# header("text/plain")
# # Content-Type: text/plain
#
# header("nph" => true,
# "status" => "OK", # == "200 OK"
# # "status" => "200 GOOD",
# "server" => ENV['SERVER_SOFTWARE'],
# "connection" => "close",
# "type" => "text/html",
# "charset" => "iso-2022-jp",
# # Content-Type: text/html; charset=iso-2022-jp
# "length" => 103,
# "language" => "ja",
# "expires" => Time.now + 30,
# "cookie" => [cookie1, cookie2],
# "my_header1" => "my_value"
# "my_header2" => "my_value")
#
# The status codes are:
#
# "OK" --> "200 OK"
# "PARTIAL_CONTENT" --> "206 Partial Content"
# "MULTIPLE_CHOICES" --> "300 Multiple Choices"
# "MOVED" --> "301 Moved Permanently"
# "REDIRECT" --> "302 Found"
# "NOT_MODIFIED" --> "304 Not Modified"
# "BAD_REQUEST" --> "400 Bad Request"
# "AUTH_REQUIRED" --> "401 Authorization Required"
# "FORBIDDEN" --> "403 Forbidden"
# "NOT_FOUND" --> "404 Not Found"
# "METHOD_NOT_ALLOWED" --> "405 Method Not Allowed"
# "NOT_ACCEPTABLE" --> "406 Not Acceptable"
# "LENGTH_REQUIRED" --> "411 Length Required"
# "PRECONDITION_FAILED" --> "412 Precondition Failed"
# "SERVER_ERROR" --> "500 Internal Server Error"
# "NOT_IMPLEMENTED" --> "501 Method Not Implemented"
# "BAD_GATEWAY" --> "502 Bad Gateway"
# "VARIANT_ALSO_VARIES" --> "506 Variant Also Negotiates"
#
# This method does not perform charset conversion.
#
def header(options = "text/html")
buf = ""
case options
when String
options = { "type" => options }
when Hash
options = options.dup
end
unless options.has_key?("type")
options["type"] = "text/html"
end
if options.has_key?("charset")
options["type"] += "; charset=" + options.delete("charset")
end
options.delete("nph") if defined?(MOD_RUBY)
if options.delete("nph") or
(/IIS\/(\d+)/n.match(env_table['SERVER_SOFTWARE']) and $1.to_i < 5)
buf += (env_table["SERVER_PROTOCOL"] or "HTTP/1.0") + " " +
(HTTP_STATUS[options["status"]] or options["status"] or "200 OK") +
EOL +
"Date: " + CGI::rfc1123_date(Time.now) + EOL
unless options.has_key?("server")
options["server"] = (env_table['SERVER_SOFTWARE'] or "")
end
unless options.has_key?("connection")
options["connection"] = "close"
end
options.delete("status")
end
if options.has_key?("status")
buf += "Status: " +
(HTTP_STATUS[options["status"]] or options["status"]) + EOL
options.delete("status")
end
if options.has_key?("server")
buf += "Server: " + options.delete("server") + EOL
end
if options.has_key?("connection")
buf += "Connection: " + options.delete("connection") + EOL
end
buf += "Content-Type: " + options.delete("type") + EOL
if options.has_key?("length")
buf += "Content-Length: " + options.delete("length").to_s + EOL
end
if options.has_key?("language")
buf += "Content-Language: " + options.delete("language") + EOL
end
if options.has_key?("expires")
buf += "Expires: " + CGI::rfc1123_date( options.delete("expires") ) + EOL
end
if options.has_key?("cookie")
if options["cookie"].kind_of?(String) or
options["cookie"].kind_of?(Cookie)
buf += "Set-Cookie: " + options.delete("cookie").to_s + EOL
elsif options["cookie"].kind_of?(Array)
options.delete("cookie").each{|cookie|
buf += "Set-Cookie: " + cookie.to_s + EOL
}
elsif options["cookie"].kind_of?(Hash)
options.delete("cookie").each_value{|cookie|
buf += "Set-Cookie: " + cookie.to_s + EOL
}
end
end
if @output_cookies
for cookie in @output_cookies
buf += "Set-Cookie: " + cookie.to_s + EOL
end
end
options.each{|key, value|
buf += key + ": " + value.to_s + EOL
}
if defined?(MOD_RUBY)
table = Apache::request.headers_out
buf.scan(/([^:]+): (.+)#{EOL}/n){ |name, value|
warn sprintf("name:%s value:%s\n", name, value) if $DEBUG
case name
when 'Set-Cookie'
table.add(name, value)
when /^status$/ni
Apache::request.status_line = value
Apache::request.status = value.to_i
when /^content-type$/ni
Apache::request.content_type = value
when /^content-encoding$/ni
Apache::request.content_encoding = value
when /^location$/ni
if Apache::request.status == 200
Apache::request.status = 302
end
Apache::request.headers_out[name] = value
else
Apache::request.headers_out[name] = value
end
}
Apache::request.send_http_header
''
else
buf + EOL
end
end # header()
# Print an HTTP header and body to $DEFAULT_OUTPUT ($>)
#
# The header is provided by +options+, as for #header().
# The body of the document is that returned by the passed-
# in block. This block takes no arguments. It is required.
#
# cgi = CGI.new
# cgi.out{ "string" }
# # Content-Type: text/html
# # Content-Length: 6
# #
# # string
#
# cgi.out("text/plain") { "string" }
# # Content-Type: text/plain
# # Content-Length: 6
# #
# # string
#
# cgi.out("nph" => true,
# "status" => "OK", # == "200 OK"
# "server" => ENV['SERVER_SOFTWARE'],
# "connection" => "close",
# "type" => "text/html",
# "charset" => "iso-2022-jp",
# # Content-Type: text/html; charset=iso-2022-jp
# "language" => "ja",
# "expires" => Time.now + (3600 * 24 * 30),
# "cookie" => [cookie1, cookie2],
# "my_header1" => "my_value",
# "my_header2" => "my_value") { "string" }
#
# Content-Length is automatically calculated from the size of
# the String returned by the content block.
#
# If ENV['REQUEST_METHOD'] == "HEAD", then only the header
# is outputted (the content block is still required, but it
# is ignored).
#
# If the charset is "iso-2022-jp" or "euc-jp" or "shift_jis" then
# the content is converted to this charset, and the language is set
# to "ja".
def out(options = "text/html") # :yield:
options = { "type" => options } if options.kind_of?(String)
content = yield
if options.has_key?("charset")
require "nkf"
case options["charset"]
when /iso-2022-jp/ni
content = NKF::nkf('-m0 -x -j', content)
options["language"] = "ja" unless options.has_key?("language")
when /euc-jp/ni
content = NKF::nkf('-m0 -x -e', content)
options["language"] = "ja" unless options.has_key?("language")
when /shift_jis/ni
content = NKF::nkf('-m0 -x -s', content)
options["language"] = "ja" unless options.has_key?("language")
end
end
options["length"] = content.length.to_s
output = stdoutput
output.binmode if defined? output.binmode
output.print header(options)
output.print content unless "HEAD" == env_table['REQUEST_METHOD']
end
# Print an argument or list of arguments to the default output stream
#
# cgi = CGI.new
# cgi.print # default: cgi.print == $DEFAULT_OUTPUT.print
def print(*options)
stdoutput.print(*options)
end
require "delegate"
# Class representing an HTTP cookie.
#
# In addition to its specific fields and methods, a Cookie instance
# is a delegator to the array of its values.
#
# See RFC 2965.
#
# == Examples of use
# cookie1 = CGI::Cookie::new("name", "value1", "value2", ...)
# cookie1 = CGI::Cookie::new("name" => "name", "value" => "value")
# cookie1 = CGI::Cookie::new('name' => 'name',
# 'value' => ['value1', 'value2', ...],
# 'path' => 'path', # optional
# 'domain' => 'domain', # optional
# 'expires' => Time.now, # optional
# 'secure' => true # optional
# )
#
# cgi.out("cookie" => [cookie1, cookie2]) { "string" }
#
# name = cookie1.name
# values = cookie1.value
# path = cookie1.path
# domain = cookie1.domain
# expires = cookie1.expires
# secure = cookie1.secure
#
# cookie1.name = 'name'
# cookie1.value = ['value1', 'value2', ...]
# cookie1.path = 'path'
# cookie1.domain = 'domain'
# cookie1.expires = Time.now + 30
# cookie1.secure = true
class Cookie < DelegateClass(Array)
# Create a new CGI::Cookie object.
#
# The contents of the cookie can be specified as a +name+ and one
# or more +value+ arguments. Alternatively, the contents can
# be specified as a single hash argument. The possible keywords of
# this hash are as follows:
#
# name:: the name of the cookie. Required.
# value:: the cookie's value or list of values.
# path:: the path for which this cookie applies. Defaults to the
# base directory of the CGI script.
# domain:: the domain for which this cookie applies.
# expires:: the time at which this cookie expires, as a +Time+ object.
# secure:: whether this cookie is a secure cookie or not (default to
# false). Secure cookies are only transmitted to HTTPS
# servers.
#
# These keywords correspond to attributes of the cookie object.
def initialize(name = "", *value)
options = if name.kind_of?(String)
{ "name" => name, "value" => value }
else
name
end
unless options.has_key?("name")
raise ArgumentError, "`name' required"
end
@name = options["name"]
@value = Array(options["value"])
# simple support for IE
if options["path"]
@path = options["path"]
else
%r|^(.*/)|.match(ENV["SCRIPT_NAME"])
@path = ($1 or "")
end
@domain = options["domain"]
@expires = options["expires"]
@secure = options["secure"] == true ? true : false
super(@value)
end
attr_accessor("name", "path", "domain", "expires")
attr_reader("secure", "value")
# Set whether the Cookie is a secure cookie or not.
#
# +val+ must be a boolean.
def secure=(val)
@secure = val if val == true or val == false
@secure
end
# Set the value of the cookie.
def value=(val)
@value.replace(Array(val))
end
# Convert the Cookie to its string representation.
def to_s
buf = ""
buf += @name + '='
buf += @value.map { |v| CGI::escape(v.to_s) }.join("&")
if @domain
buf += '; domain=' + @domain
end
if @path
buf += '; path=' + @path
end
if @expires
buf += '; expires=' + CGI::rfc1123_date(@expires)
end
if @secure == true
buf += '; secure'
end
buf
end
end # class Cookie
# Parse a raw cookie string into a hash of cookie-name=>Cookie
# pairs.
#
# cookies = CGI::Cookie::parse("raw_cookie_string")
# # { "name1" => cookie1, "name2" => cookie2, ... }
#
def Cookie::parse(raw_cookie)
cookies = Hash.new([])
return cookies unless raw_cookie
raw_cookie.split(/[;,]\s?/).each do |pairs|
name, values = pairs.split('=',2)
next unless name and values
name = CGI::unescape(name)
values ||= ""
values = values.split('&').collect{|v| CGI::unescape(v) }
if cookies.has_key?(name)
values = cookies[name].value + values
end
cookies[name] = Cookie::new({ "name" => name, "value" => values })
end
cookies
end
# Parse an HTTP query string into a hash of key=>value pairs.
#
# params = CGI::parse("query_string")
# # {"name1" => ["value1", "value2", ...],
# # "name2" => ["value1", "value2", ...], ... }
#
def CGI::parse(query)
params = Hash.new([].freeze)
query.split(/[&;]/n).each do |pairs|
key, value = pairs.split('=',2).collect{|v| CGI::unescape(v) }
if params.has_key?(key)
params[key].push(value)
else
params[key] = [value]
end
end
params
end
# Mixin module. It provides the follow functionality groups:
#
# 1. Access to CGI environment variables as methods. See
# documentation to the CGI class for a list of these variables.
#
# 2. Access to cookies, including the cookies attribute.
#
# 3. Access to parameters, including the params attribute, and overloading
# [] to perform parameter value lookup by key.
#
# 4. The initialize_query method, for initialising the above
# mechanisms, handling multipart forms, and allowing the
# class to be used in "offline" mode.
#
module QueryExtension
%w[ CONTENT_LENGTH SERVER_PORT ].each do |env|
define_method(env.sub(/^HTTP_/n, '').downcase) do
(val = env_table[env]) && Integer(val)
end
end
%w[ AUTH_TYPE CONTENT_TYPE GATEWAY_INTERFACE PATH_INFO
PATH_TRANSLATED QUERY_STRING REMOTE_ADDR REMOTE_HOST
REMOTE_IDENT REMOTE_USER REQUEST_METHOD SCRIPT_NAME
SERVER_NAME SERVER_PROTOCOL SERVER_SOFTWARE
HTTP_ACCEPT HTTP_ACCEPT_CHARSET HTTP_ACCEPT_ENCODING
HTTP_ACCEPT_LANGUAGE HTTP_CACHE_CONTROL HTTP_FROM HTTP_HOST
HTTP_NEGOTIATE HTTP_PRAGMA HTTP_REFERER HTTP_USER_AGENT ].each do |env|
define_method(env.sub(/^HTTP_/n, '').downcase) do
env_table[env]
end
end
# Get the raw cookies as a string.
def raw_cookie
env_table["HTTP_COOKIE"]
end
# Get the raw RFC2965 cookies as a string.
def raw_cookie2
env_table["HTTP_COOKIE2"]
end
# Get the cookies as a hash of cookie-name=>Cookie pairs.
attr_accessor("cookies")
# Get the parameters as a hash of name=>values pairs, where
# values is an Array.
attr("params")
# Set all the parameters.
def params=(hash)
@params.clear
@params.update(hash)
end
def read_multipart(boundary, content_length)
params = Hash.new([])
boundary = "--" + boundary
quoted_boundary = Regexp.quote(boundary, "n")
buf = ""
bufsize = 10 * 1024
boundary_end=""
# start multipart/form-data
stdinput.binmode if defined? stdinput.binmode
boundary_size = boundary.size + EOL.size
content_length -= boundary_size
status = stdinput.read(boundary_size)
if nil == status
raise EOFError, "no content body"
elsif boundary + EOL != status
raise EOFError, "bad content body"
end
loop do
head = nil
if 10240 < content_length
require "tempfile"
body = Tempfile.new("CGI")
else
begin
require "stringio"
body = StringIO.new
rescue LoadError
require "tempfile"
body = Tempfile.new("CGI")
end