[FrameworkBundle] Use more sophisticated validation and configuration.

src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php

@@ -184,10 +184,15 @@ class Configuration implements ConfigurationInterface
                     ->info('session configuration')
                     ->canBeUnset()
                     ->children()
-                        ->booleanNode('auto_start')->info('Flag for SessionListener to start session')
-                                                   ->defaultValue(true)->end()
-                        ->scalarNode('on_demand_mode')->info('Start session on demand (on access), 0 - off, 1 - on (strict), 2 - off (lax)')
-                                                             ->defaultValue(1)->end()
+                        ->booleanNode('auto_start')
+                            ->defaultTrue()
+                            ->info('Flag for SessionListener to start session')
+                        ->end()
+                        ->enumNode('on_demand_mode')
+                            ->values(array('off', 'on', 'off_lax'))
+                            ->defaultValue('on')
+                            ->info('Start session on demand: off, on, or off_lax')
+                        ->end()
                         ->scalarNode('mock_name')->defaultValue('MOCKSESSID')->end()
                         ->scalarNode('storage_id')->defaultValue('session.storage.native')->end()
                         ->scalarNode('handler_id')->defaultValue('session.handler.native_file')->end()

src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php

@@ -18,6 +18,7 @@ use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
 use Symfony\Component\Config\Resource\FileResource;
 use Symfony\Component\Config\Resource\DirectoryResource;
 use Symfony\Component\Finder\Finder;
+use Symfony\Component\HttpFoundation\Session\Storage\SessionStorageInterface;
 use Symfony\Component\HttpKernel\DependencyInjection\Extension;
 use Symfony\Component\Config\FileLocator;
 
@@ -318,7 +319,18 @@ class FrameworkExtension extends Extension
         $container->setParameter('session.auto_start', $config['auto_start']);
 
         // this controls the session start on demand feature
-        $container->setParameter('session.storage.on_demand_mode', $config['on_demand_mode']);
+        switch ($config['on_demand_mode']) {
+            // already validated
+            case 'on':
+                $demand = SessionStorageInterface::START_ON_DEMAND;
+                break;
+            case 'off':
+                $demand = SessionStorageInterface::NO_START_ON_DEMAND_STRICT;
+                break;
+            case 'off_lax':
+                $demand = SessionStorageInterface::NO_START_ON_DEMAND_LAX;
+        }
+        $container->setParameter('session.storage.on_demand_mode', $demand);
 
         $container->setParameter('session.storage.mock_name', $config['mock_name']);
 

src/Symfony/Bundle/FrameworkBundle/Resources/config/schema/symfony-1.0.xsd

@@ -79,6 +79,7 @@
     <xsd:complexType name="session">
         <xsd:attribute name="auto-start" type="xsd:boolean" />
         <xsd:attribute name="on-demand-mode" type="xsd:string" />
+        <xsd:attribute name="mock-name" type="xsd:string" />
         <xsd:attribute name="storage-id" type="xsd:string" />
         <xsd:attribute name="handler-id" type="xsd:string" />
         <xsd:attribute name="name" type="xsd:string" />

src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/full.php

@@ -24,7 +24,7 @@ $container->loadFromExtension('framework', array(
     'session' => array(
         'storage_id'      => 'session.storage.native',
         'handler_id'      => 'session.handler.native_file',
-        'on_demand_mode'  => 1,
+        'on_demand_mode'  => 'on',
         'name'            => '_SYMFONY',
         'cookie_lifetime' => 86400,
         'cookie_path'     => '/',

src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/xml/full.xml

@@ -12,7 +12,7 @@
         <framework:esi enabled="true" />
         <framework:profiler only-exceptions="true" enabled="false" />
         <framework:router resource="%kernel.root_dir%/config/routing.xml" type="xml" />
-        <framework:session gc-maxlifetime="90000" gc-probability="1" gc-divisor="108" storage-id="session.storage.native" handler-id="session.handler.native_file" name="_SYMFONY" cookie-lifetime="86400" cookie-path="/" cookie-domain="example.com" cookie-secure="true" cookie-httponly="true" save-path="/path/to/sessions" auto-start="true" on-demand-mode="1" />
+        <framework:session gc-maxlifetime="90000" gc-probability="1" gc-divisor="108" storage-id="session.storage.native" handler-id="session.handler.native_file" name="_SYMFONY" cookie-lifetime="86400" cookie-path="/" cookie-domain="example.com" cookie-secure="true" cookie-httponly="true" save-path="/path/to/sessions" auto-start="true" on-demand-mode="on" />
         <framework:templating assets-version="SomeVersionScheme" cache="/path/to/cache" >
             <framework:loader>loader.foo</framework:loader>
             <framework:loader>loader.bar</framework:loader>

src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/yml/full.yml

@@ -18,7 +18,7 @@ framework:
     session:
         storage_id:      session.storage.native
         handler_id:      session.handler.native_file
-        on_demand_mode:  1
+        on_demand_mode:  on
         name:            _SYMFONY
         cookie_lifetime:  86400
         cookie_path:      /