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[rails.git] / app / controllers / api_controller.rb

diff --git a/app/controllers/api_controller.rb b/app/controllers/api_controller.rb
index 579af27cf4d8fcac9683cab09feaf640d7df5f64..c905b24ce8c9b890facb97c9951b7f107813765a 100644 (file)
--- a/app/controllers/api_controller.rb
+++ b/app/controllers/api_controller.rb
@@ -3,6 +3,49 @@ class ApiController < ApplicationController
 
   private
 
+  ##
+  # Set allowed request formats if no explicit format has been
+  # requested via a URL suffix. Allowed formats are taken from
+  # any HTTP Accept header with XML as the default.
+  def set_request_formats
+    unless params[:format]
+      accept_header = request.headers["HTTP_ACCEPT"]
+
+      if accept_header
+        # Some clients (such asJOSM) send Accept headers which cannot be
+        # parse by Rails, for example:
+        #
+        #   Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
+        #
+        # where both "*" and ".2" as a quality do not adhere to the syntax
+        # described in RFC 7231, section 5.3.1, etc.
+        #
+        # As a workaround, and for back compatibility, default to XML format.
+        mimetypes = begin
+          Mime::Type.parse(accept_header)
+        rescue Mime::Type::InvalidMimeType
+          Array(Mime[:xml])
+        end
+
+        # Allow XML and JSON formats, and treat an all formats wildcard
+        # as XML for backwards compatibility - all other formats are discarded
+        # which will result in a 406 Not Acceptable response being sent
+        formats = mimetypes.map do |mime|
+          if mime.symbol == :xml then :xml
+          elsif mime.symbol == :json then :json
+          elsif mime == "*/*" then :xml
+          end
+        end
+      else
+        # Default to XML if no accept header was sent - this includes
+        # the unit tests which don't set one by default
+        formats = Array(:xml)
+      end
+
+      request.formats = formats.compact
+    end
+  end
+
   def authorize(realm = "Web Password", errormessage = "Couldn't authenticate you")
     # make the current_user object from any auth sources we have
     setup_user_auth
@@ -12,7 +55,16 @@ class ApiController < ApplicationController
       # no auth, the user does not exist or the password was wrong
       response.headers["WWW-Authenticate"] = "Basic realm=\"#{realm}\""
       render :plain => errormessage, :status => :unauthorized
-      return false
+      false
+    end
+  end
+
+  def current_ability
+    # Use capabilities from the oauth token if it exists and is a valid access token
+    if Authenticator.new(self, [:token]).allow?
+      ApiAbility.new(nil).merge(ApiCapability.new(current_token))
+    else
+      ApiAbility.new(current_user)
     end
   end