/usr/lib/ruby/vendor_ruby/cookiejar/jar.rb is in ruby-cookiejar 0.3.2-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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module CookieJar
# A cookie store for client side usage.
# - Enforces cookie validity rules
# - Returns just the cookies valid for a given URI
# - Handles expiration of cookies
# - Allows for persistence of cookie data (with or without session)
#
#--
#
# Internal format:
#
# Internally, the data structure is a set of nested hashes.
# Domain Level:
# At the domain level, the hashes are of individual domains,
# down-cased and without any leading period. For instance, imagine cookies
# for .foo.com, .bar.com, and .auth.bar.com:
#
# {
# "foo.com" : (host data),
# "bar.com" : (host data),
# "auth.bar.com" : (host data)
# }
#
# Lookups are done both for the matching entry, and for an entry without
# the first segment up to the dot, ie. for /^\.?[^\.]+\.(.*)$/.
# A lookup of auth.bar.com would match both bar.com and
# auth.bar.com, but not entries for com or www.auth.bar.com.
#
# Host Level:
# Entries are in an hash, with keys of the path and values of a hash of
# cookie names to cookie object
#
# {
# "/" : {"session" : (Cookie object), "cart_id" : (Cookie object)}
# "/protected" : {"authentication" : (Cookie Object)}
# }
#
# Paths are given a straight prefix string comparison to match.
# Further filters <secure, http only, ports> are not represented in this
# heirarchy.
#
# Cookies returned are ordered solely by specificity (length) of the
# path.
class Jar
# Create a new empty Jar
def initialize
@domains = {}
end
# Given a request URI and a literal Set-Cookie header value, attempt to
# add the cookie(s) to the cookie store.
#
# @param [String, URI] request_uri the resource returning the header
# @param [String] cookie_header_value the contents of the Set-Cookie
# @return [Cookie] which was created and stored
# @raise [InvalidCookieError] if the cookie header did not validate
def set_cookie request_uri, cookie_header_values
cookie_header_values.split(/, (?=[\w]+=)/).each do |cookie_header_value|
cookie = Cookie.from_set_cookie request_uri, cookie_header_value
add_cookie cookie
end
end
# Given a request URI and a literal Set-Cookie2 header value, attempt to
# add the cookie to the cookie store.
#
# @param [String, URI] request_uri the resource returning the header
# @param [String] cookie_header_value the contents of the Set-Cookie2
# @return [Cookie] which was created and stored
# @raise [InvalidCookieError] if the cookie header did not validate
def set_cookie2 request_uri, cookie_header_value
cookie = Cookie.from_set_cookie2 request_uri, cookie_header_value
add_cookie cookie
end
# Given a request URI and some HTTP headers, attempt to add the cookie(s)
# (from Set-Cookie or Set-Cookie2 headers) to the cookie store. If a
# cookie is defined (by equivalent name, domain, and path) via Set-Cookie
# and Set-Cookie2, the Set-Cookie version is ignored.
#
# @param [String, URI] request_uri the resource returning the header
# @param [Hash<String,[String,Array<String>]>] http_headers a Hash
# which may have a key of "Set-Cookie" or "Set-Cookie2", and values of
# either strings or arrays of strings
# @return [Array<Cookie>,nil] the cookies created, or nil if none found.
# @raise [InvalidCookieError] if one of the cookie headers contained
# invalid formatting or data
def set_cookies_from_headers request_uri, http_headers
set_cookie_key = http_headers.keys.detect { |k| /\ASet-Cookie\Z/i.match k }
cookies = gather_header_values http_headers[set_cookie_key] do |value|
begin
Cookie.from_set_cookie request_uri, value
rescue InvalidCookieError
end
end
set_cookie2_key = http_headers.keys.detect { |k| /\ASet-Cookie2\Z/i.match k }
cookies += gather_header_values(http_headers[set_cookie2_key]) do |value|
begin
Cookie.from_set_cookie2 request_uri, value
rescue InvalidCookieError
end
end
# build the list of cookies, using a Jar. Since Set-Cookie2 values
# come second, they will replace the Set-Cookie versions.
jar = Jar.new
cookies.each do |cookie|
jar.add_cookie cookie
end
cookies = jar.to_a
# now add them all to our own store.
cookies.each do |cookie|
add_cookie cookie
end
cookies
end
# Add a pre-existing cookie object to the jar.
#
# @param [Cookie] cookie a pre-existing cookie object
# @return [Cookie] the cookie added to the store
def add_cookie cookie
domain_paths = find_or_add_domain_for_cookie cookie
add_cookie_to_path domain_paths, cookie
cookie
end
# Return an array of all cookie objects in the jar
#
# @return [Array<Cookie>] all cookies. Includes any expired cookies
# which have not yet been removed with expire_cookies
def to_a
result = []
@domains.values.each do |paths|
paths.values.each do |cookies|
cookies.values.inject result, :<<
end
end
result
end
# Return a JSON 'object' for the various data values. Allows for
# persistence of the cookie information
#
# @param [Array] a options controlling output JSON text
# (usually a State and a depth)
# @return [String] JSON representation of object data
def to_json *a
{
'json_class' => self.class.name,
'cookies' => to_a.to_json(*a)
}.to_json(*a)
end
# Create a new Jar from a JSON-backed hash
#
# @param o [Hash] the expanded JSON object
# @return [CookieJar] a new CookieJar instance
def self.json_create o
if o.is_a? String
o = JSON.parse(o)
end
if o.is_a? Hash
o = o['cookies']
end
cookies = o.inject([]) do |result, cookie_json|
result << (Cookie.json_create cookie_json)
end
self.from_a cookies
end
# Create a new Jar from an array of Cookie objects. Expired cookies
# will still be added to the archive, and conflicting cookies will
# be overwritten by the last cookie in the array.
#
# @param [Array<Cookie>] cookies array of cookie objects
# @return [CookieJar] a new CookieJar instance
def self.from_a cookies
jar = new
cookies.each do |cookie|
jar.add_cookie cookie
end
jar
end
# Look through the jar for any cookies which have passed their expiration
# date, or session cookies from a previous session
#
# @param session [Boolean] whether session cookies should be expired,
# or just cookies past their expiration date.
def expire_cookies session = false
@domains.delete_if do |domain, paths|
paths.delete_if do |path, cookies|
cookies.delete_if do |cookie_name, cookie|
cookie.expired? || (session && cookie.session?)
end
cookies.empty?
end
paths.empty?
end
end
# Given a request URI, return a sorted list of Cookie objects. Cookies
# will be in order per RFC 2965 - sorted by longest path length, but
# otherwise unordered.
#
# @param [String, URI] request_uri the address the HTTP request will be
# sent to
# @param [Hash] opts options controlling returned cookies
# @option opts [Boolean] :script (false) Cookies marked HTTP-only will be ignored
# if true
# @return [Array<Cookie>] cookies which should be sent in the HTTP request
def get_cookies request_uri, opts = { }
uri = to_uri request_uri
hosts = Cookie.compute_search_domains uri
results = []
hosts.each do |host|
domain = find_domain host
domain.each do |path, cookies|
if uri.path.start_with? path
results += cookies.values.select do |cookie|
cookie.should_send? uri, opts[:script]
end
end
end
end
#Sort by path length, longest first
results.sort do |lhs, rhs|
rhs.path.length <=> lhs.path.length
end
end
# Given a request URI, return a string Cookie header.Cookies will be in
# order per RFC 2965 - sorted by longest path length, but otherwise
# unordered.
#
# @param [String, URI] request_uri the address the HTTP request will be
# sent to
# @param [Hash] opts options controlling returned cookies
# @option opts [Boolean] :script (false) Cookies marked HTTP-only will be ignored
# if true
# @return String value of the Cookie header which should be sent on the
# HTTP request
def get_cookie_header request_uri, opts = { }
cookies = get_cookies request_uri, opts
version = 0
ver = [[],[]]
cookies.each do |cookie|
ver[cookie.version] << cookie
end
if (ver[1].empty?)
# can do a netscape-style cookie header, relish the opportunity
cookies.map do |cookie|
cookie.to_s
end.join ";"
else
# build a RFC 2965-style cookie header. Split the cookies into
# version 0 and 1 groups so that we can reuse the '$Version' header
result = ''
unless ver[0].empty?
result << '$Version=0;'
result << ver[0].map do |cookie|
(cookie.to_s 1,false)
end.join(';')
# separate version 0 and 1 with a comma
result << ','
end
result << '$Version=1;'
ver[1].map do |cookie|
result << (cookie.to_s 1,false)
end
result
end
end
protected
def gather_header_values http_header_value, &block
result = []
if http_header_value.is_a? Array
http_header_value.each do |value|
result << block.call(value)
end
elsif http_header_value.is_a? String
result << block.call(http_header_value)
end
result.compact
end
def to_uri request_uri
(request_uri.is_a? URI)? request_uri : (URI.parse request_uri)
end
def find_domain host
@domains[host] || {}
end
def find_or_add_domain_for_cookie cookie
@domains[cookie.domain] ||= {}
end
def add_cookie_to_path paths, cookie
path_entry = (paths[cookie.path] ||= {})
path_entry[cookie.name] = cookie
end
end
end
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