diff options
Diffstat (limited to 'actionpack/lib/action_controller/metal/http_authentication.rb')
| -rw-r--r-- | actionpack/lib/action_controller/metal/http_authentication.rb | 131 |
1 files changed, 69 insertions, 62 deletions
diff --git a/actionpack/lib/action_controller/metal/http_authentication.rb b/actionpack/lib/action_controller/metal/http_authentication.rb index 3d46163b74..03b8d8db1a 100644 --- a/actionpack/lib/action_controller/metal/http_authentication.rb +++ b/actionpack/lib/action_controller/metal/http_authentication.rb @@ -1,9 +1,9 @@ require 'base64' -require 'active_support/core_ext/object/blank' module ActionController + # Makes it dead easy to do HTTP Basic, Digest and Token authentication. module HttpAuthentication - # Makes it dead easy to do HTTP \Basic and \Digest authentication. + # Makes it dead easy to do HTTP \Basic authentication. # # === Simple \Basic example # @@ -60,47 +60,6 @@ module ActionController # # assert_equal 200, status # end - # - # === Simple \Digest example - # - # require 'digest/md5' - # class PostsController < ApplicationController - # REALM = "SuperSecret" - # USERS = {"dhh" => "secret", #plain text password - # "dap" => Digest::MD5.hexdigest(["dap",REALM,"secret"].join(":"))} #ha1 digest password - # - # before_filter :authenticate, :except => [:index] - # - # def index - # render :text => "Everyone can see me!" - # end - # - # def edit - # render :text => "I'm only accessible if you know the password" - # end - # - # private - # def authenticate - # authenticate_or_request_with_http_digest(REALM) do |username| - # USERS[username] - # end - # end - # end - # - # === Notes - # - # The +authenticate_or_request_with_http_digest+ block must return the user's password - # or the ha1 digest hash so the framework can appropriately hash to check the user's - # credentials. Returning +nil+ will cause authentication to fail. - # - # Storing the ha1 hash: MD5(username:realm:password), is better than storing a plain password. If - # the password file or database is compromised, the attacker would be able to use the ha1 hash to - # authenticate as the user at this +realm+, but would not have the user's password to try using at - # other sites. - # - # In rare instances, web servers or front proxies strip authorization headers before - # they reach your application. You can debug this situation by logging all environment - # variables, and check for HTTP_AUTHORIZATION, amongst others. module Basic extend self @@ -155,6 +114,48 @@ module ActionController end end + # Makes it dead easy to do HTTP \Digest authentication. + # + # === Simple \Digest example + # + # require 'digest/md5' + # class PostsController < ApplicationController + # REALM = "SuperSecret" + # USERS = {"dhh" => "secret", #plain text password + # "dap" => Digest::MD5.hexdigest(["dap",REALM,"secret"].join(":"))} #ha1 digest password + # + # before_filter :authenticate, :except => [:index] + # + # def index + # render :text => "Everyone can see me!" + # end + # + # def edit + # render :text => "I'm only accessible if you know the password" + # end + # + # private + # def authenticate + # authenticate_or_request_with_http_digest(REALM) do |username| + # USERS[username] + # end + # end + # end + # + # === Notes + # + # The +authenticate_or_request_with_http_digest+ block must return the user's password + # or the ha1 digest hash so the framework can appropriately hash to check the user's + # credentials. Returning +nil+ will cause authentication to fail. + # + # Storing the ha1 hash: MD5(username:realm:password), is better than storing a plain password. If + # the password file or database is compromised, the attacker would be able to use the ha1 hash to + # authenticate as the user at this +realm+, but would not have the user's password to try using at + # other sites. + # + # In rare instances, web servers or front proxies strip authorization headers before + # they reach your application. You can debug this situation by logging all environment + # variables, and check for HTTP_AUTHORIZATION, amongst others. module Digest extend self @@ -192,7 +193,7 @@ module ActionController return false unless password method = request.env['rack.methodoverride.original_method'] || request.env['REQUEST_METHOD'] - uri = credentials[:uri][0,1] == '/' ? request.original_fullpath : request.original_url + uri = credentials[:uri] [true, false].any? do |trailing_question_mark| [true, false].any? do |password_is_ha1| @@ -227,9 +228,9 @@ module ActionController end def decode_credentials(header) - Hash[header.to_s.gsub(/^Digest\s+/,'').split(',').map do |pair| + HashWithIndifferentAccess[header.to_s.gsub(/^Digest\s+/,'').split(',').map do |pair| key, value = pair.split('=', 2) - [key.strip.to_sym, value.to_s.gsub(/^"|"$/,'').gsub(/'/, '')] + [key.strip, value.to_s.gsub(/^"|"$/,'').delete('\'')] end] end @@ -263,7 +264,7 @@ module ActionController # The quality of the implementation depends on a good choice. # A nonce might, for example, be constructed as the base 64 encoding of # - # => time-stamp H(time-stamp ":" ETag ":" private-key) + # time-stamp H(time-stamp ":" ETag ":" private-key) # # where time-stamp is a server-generated time or other non-repeating value, # ETag is the value of the HTTP ETag header associated with the requested entity, @@ -279,7 +280,7 @@ module ActionController # # An implementation might choose not to accept a previously used nonce or a previously used digest, in order to # protect against a replay attack. Or, an implementation might choose to use one-time nonces or digests for - # POST or PUT requests and a time-stamp for GET requests. For more details on the issues involved see Section 4 + # POST, PUT, or PATCH requests and a time-stamp for GET requests. For more details on the issues involved see Section 4 # of this document. # # The nonce is opaque to the client. Composed of Time, and hash of Time with secret @@ -293,7 +294,7 @@ module ActionController end # Might want a shorter timeout depending on whether the request - # is a PUT or POST, and if client is browser or web service. + # is a PATCH, PUT, or POST, and if client is browser or web service. # Can be much shorter if the Stale directive is implemented. This would # allow a user to use new nonce without prompting user again for their # username and password. @@ -370,7 +371,7 @@ module ActionController # def test_access_granted_from_xml # get( # "/notes/1.xml", nil, - # :authorization => ActionController::HttpAuthentication::Token.encode_credentials(users(:dhh).token) + # 'HTTP_AUTHORIZATION' => ActionController::HttpAuthentication::Token.encode_credentials(users(:dhh).token) # ) # # assert_equal 200, status @@ -399,16 +400,20 @@ module ActionController end end - # If token Authorization header is present, call the login procedure with - # the present token and options. + # If token Authorization header is present, call the login + # procedure with the present token and options. # - # controller - ActionController::Base instance for the current request. - # login_procedure - Proc to call if a token is present. The Proc should - # take 2 arguments: - # authenticate(controller) { |token, options| ... } + # [controller] + # ActionController::Base instance for the current request. # - # Returns the return value of `&login_procedure` if a token is found. - # Returns nil if no token is found. + # [login_procedure] + # Proc to call if a token is present. The Proc should take two arguments: + # + # authenticate(controller) { |token, options| ... } + # + # Returns the return value of <tt>login_procedure</tt> if a + # token is found. Returns <tt>nil</tt> if no token is found. + def authenticate(controller, &login_procedure) token, options = token_and_options(controller.request) unless token.blank? @@ -430,10 +435,12 @@ module ActionController values = Hash[$1.split(',').map do |value| value.strip! # remove any spaces between commas and values key, value = value.split(/\=\"?/) # split key=value pairs - value.chomp!('"') # chomp trailing " in value - value.gsub!(/\\\"/, '"') # unescape remaining quotes - [key, value] - end] + if value + value.chomp!('"') # chomp trailing " in value + value.gsub!(/\\\"/, '"') # unescape remaining quotes + [key, value] + end + end.compact] [values.delete("token"), values.with_indifferent_access] end end |