MvcPropertyMappingConfigurationService.php

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<?php
namespace TYPO3\CMS\Extbase\Mvc\Controller;

class MvcPropertyMappingConfigurationService implements \TYPO3\CMS\Core\SingletonInterface {

    protected $hashService;

    public function generateTrustedPropertiesToken($formFieldNames, $fieldNamePrefix = '') {
        $formFieldArray = array();
        foreach ($formFieldNames as $formField) {
            $formFieldParts = explode('[', $formField);
            $currentPosition = &$formFieldArray;
            for ($i = 0; $i < count($formFieldParts); $i++) {
                $formFieldPart = $formFieldParts[$i];
                $formFieldPart = rtrim($formFieldPart, ']');
                if (!is_array($currentPosition)) {
                    throw new \TYPO3\CMS\Extbase\Security\Exception\InvalidArgumentForHashGenerationException('The form field "' . $formField . '" is declared as array, but it collides with a previous form field of the same name which declared the field as string. This is an inconsistency you need to fix inside your Fluid form. (String overridden by Array)', 1255072196);
                }
                if ($i === count($formFieldParts) - 1) {
                    if (isset($currentPosition[$formFieldPart]) && is_array($currentPosition[$formFieldPart])) {
                        throw new \TYPO3\CMS\Extbase\Security\Exception\InvalidArgumentForHashGenerationException('The form field "' . $formField . '" is declared as string, but it collides with a previous form field of the same name which declared the field as array. This is an inconsistency you need to fix inside your Fluid form. (Array overridden by String)', 1255072587);
                    }
                    // Last iteration - add a string
                    if ($formFieldPart === '') {
                        $currentPosition[] = 1;
                    } else {
                        $currentPosition[$formFieldPart] = 1;
                    }
                } else {
                    if ($formFieldPart === '') {
                        throw new \TYPO3\CMS\Extbase\Security\Exception\InvalidArgumentForHashGenerationException('The form field "' . $formField . '" is invalid. Reason: "[]" used not as last argument, but somewhere in the middle (like foo[][bar]).', 1255072832);
                    }
                    if (!isset($currentPosition[$formFieldPart])) {
                        $currentPosition[$formFieldPart] = array();
                    }
                    $currentPosition = &$currentPosition[$formFieldPart];
                }
            }
        }
        if ($fieldNamePrefix !== '') {
            $formFieldArray = (isset($formFieldArray[$fieldNamePrefix]) ? $formFieldArray[$fieldNamePrefix] : array());
        }
        return $this->serializeAndHashFormFieldArray($formFieldArray);
    }

    protected function serializeAndHashFormFieldArray(array $formFieldArray) {
        $serializedFormFieldArray = serialize($formFieldArray);
        return $this->hashService->appendHmac($serializedFormFieldArray);
    }

    public function initializePropertyMappingConfigurationFromRequest(\TYPO3\CMS\Extbase\Mvc\Request $request, \TYPO3\CMS\Extbase\Mvc\Controller\Arguments $controllerArguments) {
        $trustedPropertiesToken = $request->getInternalArgument('__trustedProperties');
        if (!is_string($trustedPropertiesToken)) {
            return;
        }

        $serializedTrustedProperties = $this->hashService->validateAndStripHmac($trustedPropertiesToken);
        $trustedProperties = unserialize($serializedTrustedProperties);
        foreach ($trustedProperties as $propertyName => $propertyConfiguration) {
            if (!$controllerArguments->hasArgument($propertyName)) {
                continue;
            }
            $propertyMappingConfiguration = $controllerArguments->getArgument($propertyName)->getPropertyMappingConfiguration();
            $this->modifyPropertyMappingConfiguration($propertyConfiguration, $propertyMappingConfiguration);
        }
    }

    protected function modifyPropertyMappingConfiguration($propertyConfiguration, \TYPO3\CMS\Extbase\Property\PropertyMappingConfiguration $propertyMappingConfiguration) {
        if (!is_array($propertyConfiguration)) {
            return;
        }

        if (isset($propertyConfiguration['__identity'])) {
            $propertyMappingConfiguration->setTypeConverterOption('TYPO3\CMS\Extbase\Property\TypeConverter\PersistentObjectConverter', \TYPO3\CMS\Extbase\Property\TypeConverter\PersistentObjectConverter::CONFIGURATION_MODIFICATION_ALLOWED, TRUE);
            unset($propertyConfiguration['__identity']);
        } else {
            $propertyMappingConfiguration->setTypeConverterOption('TYPO3\CMS\Extbase\Property\TypeConverter\PersistentObjectConverter', \TYPO3\CMS\Extbase\Property\TypeConverter\PersistentObjectConverter::CONFIGURATION_CREATION_ALLOWED, TRUE);
        }

        foreach ($propertyConfiguration as $innerKey => $innerValue) {
            if (is_array($innerValue)) {
                $this->modifyPropertyMappingConfiguration($innerValue, $propertyMappingConfiguration->forProperty($innerKey));
            }
            $propertyMappingConfiguration->allowProperties($innerKey);
        }
    }
}