Merge remote-tracking branch 'upstream/pull/4876'

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

diff --git a/app/controllers/api_controller.rb b/app/controllers/api_controller.rb
index a138976409bba94bb259fbc1caac61935aa1f325..ff7f694c5eb63bac0ac23c7e00ba454630f7ac69 100644 (file)
--- a/app/controllers/api_controller.rb
+++ b/app/controllers/api_controller.rb
@@ -1,6 +1,8 @@
 class ApiController < ApplicationController
   skip_before_action :verify_authenticity_token
 
+  before_action :check_api_readable
+
   private
 
   ##
@@ -31,9 +33,8 @@ class ApiController < ApplicationController
         # 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
+          if mime.symbol == :xml || mime == "*/*" then :xml
           elsif mime.symbol == :json then :json
-          elsif mime == "*/*" then :xml
           end
         end
       else
@@ -53,8 +54,13 @@ class ApiController < ApplicationController
     # handle authenticate pass/fail
     unless current_user
       # no auth, the user does not exist or the password was wrong
-      response.headers["WWW-Authenticate"] = "Basic realm=\"#{realm}\""
-      render :plain => errormessage, :status => :unauthorized
+      if Settings.basic_auth_support
+        response.headers["WWW-Authenticate"] = "Basic realm=\"#{realm}\""
+        render :plain => errormessage, :status => :unauthorized
+      else
+        render :plain => errormessage, :status => :forbidden
+      end
+
       false
     end
   end
@@ -76,11 +82,13 @@ class ApiController < ApplicationController
       report_error t("oauth.permissions.missing"), :forbidden
     elsif current_user
       head :forbidden
-    else
+    elsif Settings.basic_auth_support
       realm = "Web Password"
       errormessage = "Couldn't authenticate you"
       response.headers["WWW-Authenticate"] = "Basic realm=\"#{realm}\""
       render :plain => errormessage, :status => :unauthorized
+    else
+      render :plain => errormessage, :status => :forbidden
     end
   end
 
@@ -95,21 +103,32 @@ class ApiController < ApplicationController
   # from the authorize method, but can be called elsewhere if authorisation
   # is optional.
   def setup_user_auth
+    logger.info " setup_user_auth"
     # try and setup using OAuth
     if doorkeeper_token&.accessible?
       self.current_user = User.find(doorkeeper_token.resource_owner_id)
     elsif Authenticator.new(self, [:token]).allow?
-      # self.current_user setup by OAuth
+      if Settings.oauth_10a_support
+        # self.current_user setup by OAuth
+      else
+        report_error t("application.oauth_10a_disabled", :link => t("application.auth_disabled_link")), :forbidden
+      end
     else
-      username, passwd = get_auth_data # parse from headers
+      username, passwd = auth_data # parse from headers
       # authenticate per-scheme
       self.current_user = if username.nil?
                             nil # no authentication provided - perhaps first connect (client should retry after 401)
-                          elsif username == "token"
-                            User.authenticate(:token => passwd) # preferred - random token for user from db, passed in basic auth
                           else
                             User.authenticate(:username => username, :password => passwd) # basic auth
                           end
+      if username && current_user
+        if Settings.basic_auth_support
+          # log if we have authenticated using basic auth
+          logger.info "Authenticated as user #{current_user.id} using basic authentication"
+        else
+          report_error t("application.basic_auth_disabled", :link => t("application.auth_disabled_link")), :forbidden
+        end
+      end
     end
 
     # have we identified the user?
@@ -134,4 +153,55 @@ class ApiController < ApplicationController
       end
     end
   end
+
+  def api_call_handle_error
+    yield
+  rescue ActionController::UnknownFormat
+    head :not_acceptable
+  rescue ActiveRecord::RecordNotFound => e
+    head :not_found
+  rescue LibXML::XML::Error, ArgumentError => e
+    report_error e.message, :bad_request
+  rescue ActiveRecord::RecordInvalid => e
+    message = "#{e.record.class} #{e.record.id}: "
+    e.record.errors.each { |error| message << "#{error.attribute}: #{error.message} (#{e.record[error.attribute].inspect})" }
+    report_error message, :bad_request
+  rescue OSM::APIError => e
+    report_error e.message, e.status
+  rescue AbstractController::ActionNotFound => e
+    raise
+  rescue StandardError => e
+    logger.info("API threw unexpected #{e.class} exception: #{e.message}")
+    e.backtrace.each { |l| logger.info(l) }
+    report_error "#{e.class}: #{e.message}", :internal_server_error
+  end
+
+  ##
+  # wrap an api call in a timeout
+  def api_call_timeout(&block)
+    Timeout.timeout(Settings.api_timeout, &block)
+  rescue ActionView::Template::Error => e
+    e = e.cause
+
+    if e.is_a?(Timeout::Error) ||
+       (e.is_a?(ActiveRecord::StatementInvalid) && e.message.include?("execution expired"))
+      ActiveRecord::Base.connection.raw_connection.cancel
+      raise OSM::APITimeoutError
+    else
+      raise
+    end
+  rescue Timeout::Error
+    ActiveRecord::Base.connection.raw_connection.cancel
+    raise OSM::APITimeoutError
+  end
+
+  ##
+  # check the api change rate limit
+  def check_rate_limit(new_changes = 1)
+    max_changes = ActiveRecord::Base.connection.select_value(
+      "SELECT api_rate_limit($1)", "api_rate_limit", [current_user.id]
+    )
+
+    raise OSM::APIRateLimitExceeded if new_changes > max_changes
+  end
 end