X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/c6bf21a9d054f29d788272767b7a77d58fe56aec..dcf56d9376680f924b080ad46ac547e3b7fb7324:/app/controllers/application_controller.rb

diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 6dbe9165c..97ab5abfc 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -1,25 +1,57 @@
-# 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 OSM_STATUS == :database_readonly or OSM_STATUS == :database_offline
-    session :off
-  end
+  protect_from_forgery
+
+  before_filter :fetch_body
 
   def authorize_web
     if session[:user]
-      @user = User.find(session[:user], :conditions => {:visible => true})
+      @user = User.where(:id => session[:user]).where("status IN ('active', 'confirmed', 'suspended')").first
+
+      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
+
+        redirect_to :controller => "user", :action => "suspended"
+
+        # don't allow access to any auth-requiring part of the site unless
+        # the new CTs have been seen (and accept/decline chosen).
+      elsif !@user.terms_seen and flash[:skip_terms].nil?
+        flash[:notice] = t 'user.terms.you need to accept or decline'
+        if params[:referer]
+          redirect_to :controller => "user", :action => "terms", :referer => params[:referer]
+        else
+          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
 
   ##
@@ -33,12 +65,28 @@ class ApplicationController < ActionController::Base
     # 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
+        report_error "OAuth token doesn't have that capability.", :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?
+        session[:cookie_test] = true
+        redirect_to params.merge(:cookie_test => "true")
+        return false
+      else
+        flash.now[:warning] = t 'application.require_cookies.cookies_needed'
+      end
+    else
+      session.delete(:cookie_test)
+    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)
@@ -51,6 +99,11 @@ class ApplicationController < ActionController::Base
   end
   def require_allow_write_api
     require_capability(:allow_write_api)
+
+    if REQUIRE_TERMS_AGREED and @user.terms_agreed.nil?
+      report_error "You must accept the contributor terms before you can edit.", :forbidden
+      return false
+    end
   end
   def require_allow_read_gpx
     require_capability(:allow_read_gpx)
@@ -58,6 +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
@@ -65,9 +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?
@@ -78,6 +146,23 @@ class ApplicationController < ActionController::Base
         @user = User.authenticate(:username => username, :password => passwd) # basic auth
       end
     end
+
+    # have we identified the user?
+    if @user
+      # check if the user has been banned
+      if @user.blocks.active.exists?
+        # NOTE: need slightly more helpful message than this.
+        report_error t('application.setup_user_auth.blocked'), :forbidden
+      end
+
+      # if the user hasn't seen the contributor terms then don't
+      # allow editing - they have to go to the web site and see
+      # (but can decline) the CTs to continue.
+      if REQUIRE_TERMS_SEEN and not @user.terms_seen and flash[:skip_terms].nil?
+        set_locale
+        report_error t('application.setup_user_auth.need_to_see_terms'), :forbidden
+      end
+    end
   end
 
   def authorize(realm='Web Password', errormessage="Couldn't authenticate you") 
@@ -93,40 +178,82 @@ 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 OSM_STATUS == :database_offline or (need_api and OSM_STATUS == :api_offline)
+    if STATUS == :database_offline or (need_api and STATUS == :api_offline)
       redirect_to :controller => 'site', :action => 'offline'
     end
   end
 
   def check_database_writable(need_api = false)
-    if OSM_STATUS == :database_offline or OSM_STATUS == :database_readonly or
-       (need_api and (OSM_STATUS == :api_offline or OSM_STATUS == :api_readonly))
+    if STATUS == :database_offline or STATUS == :database_readonly or
+       (need_api and (STATUS == :api_offline or STATUS == :api_readonly))
       redirect_to :controller => 'site', :action => 'offline'
     end
   end
 
   def check_api_readable
-    if OSM_STATUS == :database_offline or OSM_STATUS == :api_offline
-      response.headers['Error'] = "Database offline for maintenance"
-      render :nothing => true, :status => :service_unavailable
+    if api_status == :offline
+      report_error "Database offline for maintenance", :service_unavailable
       return false
     end
   end
 
   def check_api_writable
-    if OSM_STATUS == :database_offline or OSM_STATUS == :database_readonly or
-       OSM_STATUS == :api_offline or OSM_STATUS == :api_readonly
-      response.headers['Error'] = "Database offline for maintenance"
-      render :nothing => true, :status => :service_unavailable
+    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?
-      response.headers['Error'] = "You must make your edits public to upload new data"
-      render :nothing => true, :status => :forbidden
+      report_error "You must make your edits public to upload new data", :forbidden
       return false
     end
   end
@@ -139,32 +266,66 @@ class ApplicationController < ActionController::Base
   def report_error(message, status = :bad_request)
     # Todo: some sort of escaping of problem characters in the message
     response.headers['Error'] = message
-    render :text => message, :status => status
+
+    if request.headers['X-Error-Format'] and
+       request.headers['X-Error-Format'].downcase == "xml"
+      result = OSM::API.new.get_xml_doc
+      result.root.name = "osmError"
+      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, :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?
+      http_accept_language.user_preferred_languages = @user.languages
+      response.header['Vary'] = '*'
     end
 
-    I18n.locale = request.compatible_language_from(I18n.available_locales)
+    I18n.locale = select_locale
+
+    if @user && @user.languages.empty? && !http_accept_language.user_preferred_languages.empty?
+      @user.languages = http_accept_language.user_preferred_languages
+      @user.save
+    end
 
     response.headers['Content-Language'] = I18n.locale.to_s
   end
 
+  def select_locale(locales = I18n.available_locales)
+    if params[:locale]
+      http_accept_language.user_preferred_languages = [ params[:locale] ]
+    end
+
+    if http_accept_language.compatible_language_from(locales).nil?
+      http_accept_language.user_preferred_languages = http_accept_language.user_preferred_languages.collect do |pl|
+        pls = [ pl ]
+
+        while pl.match(/^(.*)-[^-]+$/)
+          pls.push($1) if locales.include?($1) or locales.include?($1.to_sym)
+          pl = $1
+        end
+
+        pls
+      end.flatten
+    end
+
+    http_accept_language.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
@@ -173,7 +334,11 @@ class ApplicationController < ActionController::Base
       report_error message, :bad_request
     rescue OSM::APIError => ex
       report_error ex.message, ex.status
+    rescue AbstractController::ActionNotFound => 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
@@ -186,13 +351,101 @@ class ApplicationController < ActionController::Base
     raise OSM::APIBadMethodError.new(method) unless ok
   end
 
+  ##
+  # wrap an api call in a timeout
   def api_call_timeout
-    Timeout::timeout(APP_CONFIG['api_timeout'], OSM::APITimeoutError) do
+    OSM::Timer.timeout(API_TIMEOUT) do
       yield
     end
+  rescue Timeout::Error
+    raise OSM::APITimeoutError
+  end
+
+  ##
+  # wrap a web page in a timeout
+  def web_timeout
+    OSM::Timer.timeout(WEB_TIMEOUT) do
+      yield
+    end
+  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
+    end
+  rescue Timeout::Error
+    render :action => "timeout"
+  end
+
+  ##
+  # is the requestor logged in?
+  def logged_in?
+    !@user.nil?
+  end
+
+  ##
+  # 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
+
+  ##
+  # 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
+
+  ##
+  # 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 map_layout
+    request.xhr? ? false : 'map'
+  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
   def get_auth_data 
     if request.env.has_key? 'X-HTTP_AUTHORIZATION'          # where mod_rewrite might have put it 
@@ -209,4 +462,18 @@ 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