X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/1368f194da3834559c195e6a9e269cd4cb580437..2df3a8d2e25460b1eef06c9189f2677833cbdcac:/app/controllers/application_controller.rb

diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 00104b0a1..0c4117047 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -22,19 +22,80 @@ class ApplicationController < ActionController::Base
     redirect_to :controller => 'user', :action => 'login', :referer => request.request_uri unless @user
   end
 
+  ##
+  # requires the user to be logged in by the token or HTTP methods, or have an 
+  # OAuth token with the right capability. this method is a bit of a pain to call 
+  # directly, since it's cumbersome to call filters with arguments in rails. to
+  # make it easier to read and write the code, there are some utility methods
+  # below.
+  def require_capability(cap)
+    # when the current token is nil, it means the user logged in with a different
+    # method, otherwise an OAuth token was used, which has to be checked.
+    unless current_token.nil?
+      unless current_token.read_attribute(cap)
+        render :text => "OAuth token doesn't have that capability.", :status => :forbidden
+        return false
+      end
+    end
+  end
+
+  ##
+  # require the user to have cookies enabled in their browser
+  def require_cookies
+    if request.cookies["_osm_session"].to_s == ""
+      if params[:cookie_test].nil?
+        redirect_to params.merge(:cookie_test => "true")
+        return false
+      else
+        flash.now[:warning] = t 'application.require_cookies.cookies_needed'
+      end
+    end
+  end
+
+  # Utility methods to make the controller filter methods easier to read and write.
+  def require_allow_read_prefs
+    require_capability(:allow_read_prefs)
+  end
+  def require_allow_write_prefs
+    require_capability(:allow_write_prefs)
+  end
+  def require_allow_write_diary
+    require_capability(:allow_write_diary)
+  end
+  def require_allow_write_api
+    require_capability(:allow_write_api)
+  end
+  def require_allow_read_gpx
+    require_capability(:allow_read_gpx)
+  end
+  def require_allow_write_gpx
+    require_capability(:allow_write_gpx)
+  end
+
   ##
   # sets up the @user object for use by other methods. this is mostly called
   # from the authorize method, but can be called elsewhere if authorisation
   # is optional.
   def setup_user_auth
-    username, passwd = get_auth_data # parse from headers
-    # authenticate per-scheme
-    if username.nil?
-      @user = nil # no authentication provided - perhaps first connect (client should retry after 401)
-    elsif username == 'token' 
-      @user = User.authenticate(:token => passwd) # preferred - random token for user from db, passed in basic auth
+    # try and setup using OAuth
+    if oauthenticate
+      @user = current_token.user
     else
-      @user = User.authenticate(:username => username, :password => passwd) # basic auth
+      username, passwd = get_auth_data # parse from headers
+      # authenticate per-scheme
+      if username.nil?
+        @user = nil # no authentication provided - perhaps first connect (client should retry after 401)
+      elsif username == 'token'
+        @user = User.authenticate(:token => passwd) # preferred - random token for user from db, passed in basic auth
+      else
+        @user = User.authenticate(:username => username, :password => passwd) # basic auth
+      end
+    end
+
+    # check if the user has been banned
+    unless @user.nil? or @user.active_blocks.empty?
+      # NOTE: need slightly more helpful message than this.
+      render :text => t('application.setup_user_auth.blocked'), :status => :forbidden
     end
   end
 
@@ -101,18 +162,20 @@ class ApplicationController < ActionController::Base
   end
   
   def set_locale
+    response.header['Vary'] = 'Accept-Language'
+
     if @user
       if !@user.languages.empty?
         request.user_preferred_languages = @user.languages
+        response.header['Vary'] = '*'
       elsif !request.user_preferred_languages.empty?
         @user.languages = request.user_preferred_languages
         @user.save
       end
     end
 
-    I18n.locale = request.preferred_language_from(I18n.available_locales) ||
-                  request.compatible_language_from(I18n.available_locales)
-    logger.info("Select #{I18n.locale} matching #{request.user_preferred_languages.join(',')} against #{I18n.available_locales.join(',')}")
+    I18n.locale = request.compatible_language_from(I18n.available_locales)
+
     response.headers['Content-Language'] = I18n.locale.to_s
   end
 
@@ -129,7 +192,11 @@ class ApplicationController < ActionController::Base
       report_error message, :bad_request
     rescue OSM::APIError => ex
       report_error ex.message, ex.status
+    rescue ActionController::UnknownAction => ex
+      raise
     rescue Exception => ex
+      logger.info("API threw unexpected #{ex.class} exception: #{ex.message}")
+      ex.backtrace.each { |l| logger.info(l) }
       report_error "#{ex.class}: #{ex.message}", :internal_server_error
     end
   end
@@ -143,12 +210,54 @@ class ApplicationController < ActionController::Base
   end
 
   def api_call_timeout
-    Timeout::timeout(APP_CONFIG['api_timeout'], OSM::APITimeoutError) do
+    SystemTimer.timeout_after(APP_CONFIG['api_timeout']) do
       yield
     end
+  rescue Timeout::Error
+    raise OSM::APITimeoutError
+  end
+
+  ##
+  # extend caches_action to include the parameters, locale and logged in
+  # status in all cache keys
+  def self.caches_action(*actions)
+    options = actions.extract_options!
+    cache_path = options[:cache_path] || Hash.new
+
+    options[:cache_path] = Proc.new do |controller|
+      user = controller.instance_variable_get("@user")
+
+      case
+      when user.nil? then user = :none
+      when user.display_name == controller.params[:display_name] then user = :self
+      when user.administrator? then user = :administrator
+      when user.moderator? then user = :moderator
+      else user = :other
+      end
+
+      cache_path.merge(controller.params).merge(:locale => I18n.locale, :user => user)
+    end
+
+    actions.push(options)
+
+    super *actions
+  end
+
+  ##
+  # extend expire_action to expire all variants
+  def expire_action(options = {})
+    path = ActionCachePath.path_for(self, options, false).gsub('?', '.').gsub(':', '.')
+    expire_fragment(Regexp.new(Regexp.escape(path) + "\\..*"))
+  end
+
+  ##
+  # is the requestor logged in?
+  def logged_in?
+    !@user.nil?
   end
 
 private 
+
   # extract authorisation credentials from headers, returns user = nil if none
   def get_auth_data 
     if request.env.has_key? 'X-HTTP_AUTHORIZATION'          # where mod_rewrite might have put it