X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/59a49a6ef5e5f0e287a1974b1abecc96e4b13709..8dc16bd8dbd362a0e823f8abd989d871ce5de32f:/app/controllers/application_controller.rb

diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 655017847..aec612080 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -1,19 +1,19 @@
-# Filters added to this controller will be run for all controllers in the application.
-# Likewise, all the methods added will be available for all controllers.
 class ApplicationController < ActionController::Base
+  include SessionPersistence
 
-  if STATUS == :database_readonly or STATUS == :database_offline
-    session :off
+  protect_from_forgery
 
-    def self.cache_sweeper(*sweepers)
-    end
-  end
+  before_filter :fetch_body
 
   def authorize_web
     if session[:user]
-      @user = User.find(session[:user], :conditions => {:status => ["active", "confirmed", "suspended"]})
+      @user = User.where(:id => session[:user]).where("status IN ('active', 'confirmed', 'suspended')").first
 
-      if @user.status == "suspended"
+      if @user.display_name != cookies["_osm_username"]
+        logger.info "Session user '#{@user.display_name}' does not match cookie user '#{cookies['_osm_username']}'"
+        reset_session
+        @user = nil
+      elsif @user.status == "suspended"
         session.delete(:user)
         session_expires_automatically
 
@@ -26,20 +26,32 @@ class ApplicationController < ActionController::Base
         if params[:referer]
           redirect_to :controller => "user", :action => "terms", :referer => params[:referer]
         else
-          redirect_to :controller => "user", :action => "terms", :referer => request.request_uri
+          redirect_to :controller => "user", :action => "terms", :referer => request.fullpath
         end
       end
     elsif session[:token]
-      @user = User.authenticate(:token => session[:token])
-      session[:user] = @user.id
+      if @user = User.authenticate(:token => session[:token])
+        session[:user] = @user.id
+      end
     end
   rescue Exception => ex
     logger.info("Exception authorizing user: #{ex.to_s}")
+    reset_session
     @user = nil
   end
 
   def require_user
-    redirect_to :controller => 'user', :action => 'login', :referer => request.request_uri unless @user
+    unless @user
+      if request.get?
+        redirect_to :controller => 'user', :action => 'login', :referer => request.fullpath
+      else
+        render :text => "", :status => :forbidden
+      end
+    end
+  end
+
+  def require_oauth
+    @oauth = @user.access_token(OAUTH_KEY) if @user and defined? OAUTH_KEY
   end
 
   ##
@@ -99,6 +111,23 @@ class ApplicationController < ActionController::Base
   def require_allow_write_gpx
     require_capability(:allow_write_gpx)
   end
+  def require_allow_write_notes
+    require_capability(:allow_write_notes)
+  end
+
+  ##
+  # require that the user is a moderator, or fill out a helpful error message
+  # and return them to the index for the controller this is wrapped from.
+  def require_moderator
+    unless @user.moderator?
+      if request.get?
+        flash[:error] = t('application.require_moderator.not_a_moderator')
+        redirect_to :action => 'index'
+      else
+        render :text => "", :status => :forbidden
+      end
+    end
+  end
 
   ##
   # sets up the @user object for use by other methods. this is mostly called
@@ -106,9 +135,7 @@ class ApplicationController < ActionController::Base
   # is optional.
   def setup_user_auth
     # try and setup using OAuth
-    if oauthenticate
-      @user = current_token.user
-    else
+    if not Authenticator.new(self, [:token]).allow?
       username, passwd = get_auth_data # parse from headers
       # authenticate per-scheme
       if username.nil?
@@ -123,7 +150,7 @@ class ApplicationController < ActionController::Base
     # have we identified the user?
     if @user
       # check if the user has been banned
-      if not  @user.active_blocks.empty?
+      if @user.blocks.active.exists?
         # NOTE: need slightly more helpful message than this.
         report_error t('application.setup_user_auth.blocked'), :forbidden
       end
@@ -151,6 +178,22 @@ class ApplicationController < ActionController::Base
     end 
   end 
 
+  ##
+  # to be used as a before_filter *after* authorize. this checks that
+  # the user is a moderator and, if not, returns a forbidden error.
+  #
+  # NOTE: this isn't a very good way of doing it - it duplicates logic
+  # from require_moderator - but what we really need to do is a fairly
+  # drastic refactoring based on :format and respond_to? but not a 
+  # good idea to do that in this branch.
+  def authorize_moderator(errormessage="Access restricted to moderators") 
+    # check user is a moderator
+    unless @user.moderator?
+      render :text => errormessage, :status => :forbidden
+      return false
+    end 
+  end 
+
   def check_database_readable(need_api = false)
     if STATUS == :database_offline or (need_api and STATUS == :api_offline)
       redirect_to :controller => 'site', :action => 'offline'
@@ -165,20 +208,49 @@ class ApplicationController < ActionController::Base
   end
 
   def check_api_readable
-    if STATUS == :database_offline or STATUS == :api_offline
+    if api_status == :offline
       report_error "Database offline for maintenance", :service_unavailable
       return false
     end
   end
 
   def check_api_writable
-    if STATUS == :database_offline or STATUS == :database_readonly or
-       STATUS == :api_offline or STATUS == :api_readonly
+    unless api_status == :online
       report_error "Database offline for maintenance", :service_unavailable
       return false
     end
   end
 
+  def database_status
+    if STATUS == :database_offline
+      :offline
+    elsif STATUS == :database_readonly
+      :readonly
+    else 
+      :online
+    end
+  end
+
+  def api_status
+    status = database_status
+    if status == :online
+      if STATUS == :api_offline
+        status = :offline
+      elsif STATUS == :api_readonly
+        status = :readonly
+      end
+    end
+    return status
+  end
+
+  def gpx_status
+    status = database_status
+    if status == :online
+      status = :offline if STATUS == :gpx_offline
+    end
+    return status
+  end
+
   def require_public_data
     unless @user.data_public?
       report_error "You must make your edits public to upload new data", :forbidden
@@ -199,56 +271,61 @@ class ApplicationController < ActionController::Base
        request.headers['X-Error-Format'].downcase == "xml"
       result = OSM::API.new.get_xml_doc
       result.root.name = "osmError"
-      result.root << (XML::Node.new("status") << interpret_status(status))
+      result.root << (XML::Node.new("status") << "#{Rack::Utils.status_code(status)} #{Rack::Utils::HTTP_STATUS_CODES[status]}")
       result.root << (XML::Node.new("message") << message)
 
       render :text => result.to_s, :content_type => "text/xml"
     else
-      render :text => message, :status => status
+      render :text => message, :status => status, :content_type => "text/plain"
     end
   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
+    if @user && !@user.languages.empty?
+      request.user_preferred_languages = @user.languages
+      response.header['Vary'] = '*'
+    end
+
+    I18n.locale = select_locale
+
+    if @user && @user.languages.empty? && !request.user_preferred_languages.empty?
+      @user.languages = request.user_preferred_languages
+      @user.save
     end
 
-    if request.compatible_language_from(I18n.available_locales).nil?
+    response.headers['Content-Language'] = I18n.locale.to_s
+  end
+
+  def select_locale(locales = I18n.available_locales)
+    if params[:locale]
+      request.user_preferred_languages = [ params[:locale] ]
+    end
+
+    if request.compatible_language_from(locales).nil?
       request.user_preferred_languages = request.user_preferred_languages.collect do |pl|
         pls = [ pl ]
 
         while pl.match(/^(.*)-[^-]+$/)
-          pls.push($1) if I18n.available_locales.include?($1.to_sym)
+          pls.push($1) if locales.include?($1) or locales.include?($1.to_sym)
           pl = $1
         end
 
         pls
       end.flatten
-
-      if @user and not request.compatible_language_from(I18n.available_locales).nil?
-        @user.languages = request.user_preferred_languages
-        @user.save        
-      end
     end
 
-    I18n.locale = request.compatible_language_from(I18n.available_locales)
-
-    response.headers['Content-Language'] = I18n.locale.to_s
+    request.compatible_language_from(locales) || I18n.default_locale
   end
 
+  helper_method :select_locale
+
   def api_call_handle_error
     begin
       yield
     rescue ActiveRecord::RecordNotFound => ex
-      render :nothing => true, :status => :not_found
+      render :text => "", :status => :not_found
     rescue LibXML::XML::Error, ArgumentError => ex
       report_error ex.message, :bad_request
     rescue ActiveRecord::RecordInvalid => ex
@@ -257,7 +334,7 @@ class ApplicationController < ActionController::Base
       report_error message, :bad_request
     rescue OSM::APIError => ex
       report_error ex.message, ex.status
-    rescue ActionController::UnknownAction => ex
+    rescue AbstractController::ActionNotFound => ex
       raise
     rescue Exception => ex
       logger.info("API threw unexpected #{ex.class} exception: #{ex.message}")
@@ -277,7 +354,7 @@ class ApplicationController < ActionController::Base
   ##
   # wrap an api call in a timeout
   def api_call_timeout
-    SystemTimer.timeout_after(API_TIMEOUT) do
+    OSM::Timer.timeout(API_TIMEOUT) do
       yield
     end
   rescue Timeout::Error
@@ -287,11 +364,17 @@ class ApplicationController < ActionController::Base
   ##
   # wrap a web page in a timeout
   def web_timeout
-    SystemTimer.timeout_after(WEB_TIMEOUT) do
+    OSM::Timer.timeout(WEB_TIMEOUT) do
       yield
     end
-  rescue ActionView::TemplateError => ex
-    if ex.original_exception.is_a?(Timeout::Error)
+  rescue ActionView::Template::Error => ex
+    ex = ex.original_exception
+
+    if ex.is_a?(ActiveRecord::StatementInvalid) and ex.message =~ /execution expired/
+      ex = Timeout::Error.new
+    end
+
+    if ex.is_a?(Timeout::Error)
       render :action => "timeout"
     else
       raise
@@ -301,45 +384,62 @@ class ApplicationController < ActionController::Base
   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[:unless] = case options[:unless]
-                       when NilClass then Array.new
-                       when Array then options[:unless]
-                       else unlessp = [ options[:unless] ]
-                       end
-
-    options[:unless].push(Proc.new do |controller|
-      controller.params.include?(:page)
-    end)
-
-    options[:cache_path] = Proc.new do |controller|
-      cache_path.merge(controller.params).merge(:locale => I18n.locale)
-    end
-
-    actions.push(options)
+  # is the requestor logged in?
+  def logged_in?
+    !@user.nil?
+  end
 
-    super *actions
+  ##
+  # ensure that there is a "this_user" instance variable
+  def lookup_this_user
+    unless @this_user = User.active.find_by_display_name(params[:display_name])
+      render_unknown_user params[:display_name]
+    end
   end
 
   ##
-  # extend expire_action to expire all variants
-  def expire_action(options = {})
-    I18n.available_locales.each do |locale|
-      super options.merge(:locale => locale)
+  # render a "no such user" page
+  def render_unknown_user(name)
+    @title = t "user.no_such_user.title"
+    @not_found_user = name
+
+    respond_to do |format|
+      format.html { render :template => "user/no_such_user", :status => :not_found }
+      format.all { render :text => "", :status => :not_found }
     end
   end
 
   ##
-  # is the requestor logged in?
-  def logged_in?
-    !@user.nil?
+  # Unfortunately if a PUT or POST request that has a body fails to
+  # read it then Apache will sometimes fail to return the response it
+  # is given to the client properly, instead erroring:
+  #
+  #   https://issues.apache.org/bugzilla/show_bug.cgi?id=44782
+  #
+  # To work round this we call rewind on the body here, which is added
+  # as a filter, to force it to be fetched from Apache into a file.
+  def fetch_body
+    request.body.rewind
   end
 
+  def preferred_editor
+    editor = if params[:editor]
+      params[:editor]
+    elsif @user and @user.preferred_editor
+      @user.preferred_editor
+    else
+      DEFAULT_EDITOR
+    end
+
+    if request.env['HTTP_USER_AGENT'] =~ /MSIE/ and editor == 'id'
+      editor = 'potlatch2'
+    end
+
+    editor
+  end
+
+  helper_method :preferred_editor
+
 private 
 
   # extract authorisation credentials from headers, returns user = nil if none
@@ -358,4 +458,18 @@ private
     return [user, pass] 
   end 
 
+  # used by oauth plugin to get the current user
+  def current_user
+    @user
+  end
+
+  # used by oauth plugin to set the current user
+  def current_user=(user)
+    @user=user
+  end
+
+  # override to stop oauth plugin sending errors
+  def invalid_oauth_response
+  end
+
 end