FormViewHelper.php

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<?php
namespace TYPO3\CMS\Fluid\ViewHelpers;

/*                                                                        *
 * This script is backported from the TYPO3 Flow package "TYPO3.Fluid".   *
 *                                                                        *
 * It is free software; you can redistribute it and/or modify it under    *
 * the terms of the GNU General Public License as published by the Free   *
 * Software Foundation, either version 3 of the License, or (at your      *
 *                                                                        *
 *                                                                        *
 * This script is distributed in the hope that it will be useful, but     *
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHAN-    *
 * TABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General      *
 * Public License for more details.                                       *
 *                                                                        *
 * You should have received a copy of the GNU General Public License      *
 * along with the script.                                                 *
 * If not, see http://www.gnu.org/licenses/gpl.html                       *
 *                                                                        *
 * The TYPO3 project - inspiring people to share!                         *
 *                                                                        */
class FormViewHelper extends \TYPO3\CMS\Fluid\ViewHelpers\Form\AbstractFormViewHelper
{
    protected $tagName = 'form';

    protected $hashService;

    protected $mvcPropertyMappingConfigurationService;

    protected $extensionService;

    protected $formActionUriArguments;

    public function initializeArguments()
    {
        $this->registerTagAttribute('enctype', 'string', 'MIME type with which the form is submitted');
        $this->registerTagAttribute('method', 'string', 'Transfer type (GET or POST)');
        $this->registerTagAttribute('name', 'string', 'Name of form');
        $this->registerTagAttribute('onreset', 'string', 'JavaScript: On reset of the form');
        $this->registerTagAttribute('onsubmit', 'string', 'JavaScript: On submit of the form');
        $this->registerUniversalTagAttributes();
    }

    public function render($action = null, array $arguments = array(), $controller = null, $extensionName = null, $pluginName = null, $pageUid = null, $object = null, $pageType = 0, $noCache = false, $noCacheHash = false, $section = '', $format = '', array $additionalParams = array(), $absolute = false, $addQueryString = false, array $argumentsToBeExcludedFromQueryString = array(), $fieldNamePrefix = null, $actionUri = null, $objectName = null, $hiddenFieldClassName = null)
    {
        $this->setFormActionUri();
        if (strtolower($this->arguments['method']) === 'get') {
            $this->tag->addAttribute('method', 'get');
        } else {
            $this->tag->addAttribute('method', 'post');
        }
        $this->addFormObjectNameToViewHelperVariableContainer();
        $this->addFormObjectToViewHelperVariableContainer();
        $this->addFieldNamePrefixToViewHelperVariableContainer();
        $this->addFormFieldNamesToViewHelperVariableContainer();
        $formContent = $this->renderChildren();

        if ($this->arguments['hiddenFieldClassName'] !== null) {
            $content = LF . '<div class="' . htmlspecialchars($this->arguments['hiddenFieldClassName']) . '">';
        } else {
            $content = LF . '<div>';
        }

        $content .= $this->renderHiddenIdentityField($this->arguments['object'], $this->getFormObjectName());
        $content .= $this->renderAdditionalIdentityFields();
        $content .= $this->renderHiddenReferrerFields();

        // Render the trusted list of all properties after everything else has been rendered
        $content .= $this->renderTrustedPropertiesField();

        $content .= LF . '</div>' . LF;
        $content .= $formContent;
        $this->tag->setContent($content);
        $this->removeFieldNamePrefixFromViewHelperVariableContainer();
        $this->removeFormObjectFromViewHelperVariableContainer();
        $this->removeFormObjectNameFromViewHelperVariableContainer();
        $this->removeFormFieldNamesFromViewHelperVariableContainer();
        $this->removeCheckboxFieldNamesFromViewHelperVariableContainer();
        return $this->tag->render();
    }

    protected function setFormActionUri()
    {
        if ($this->hasArgument('actionUri')) {
            $formActionUri = $this->arguments['actionUri'];
        } else {
            $uriBuilder = $this->controllerContext->getUriBuilder();
            $formActionUri = $uriBuilder->reset()->setTargetPageUid($this->arguments['pageUid'])->setTargetPageType($this->arguments['pageType'])->setNoCache($this->arguments['noCache'])->setUseCacheHash(!$this->arguments['noCacheHash'])->setSection($this->arguments['section'])->setCreateAbsoluteUri($this->arguments['absolute'])->setArguments((array)$this->arguments['additionalParams'])->setAddQueryString($this->arguments['addQueryString'])->setArgumentsToBeExcludedFromQueryString((array)$this->arguments['argumentsToBeExcludedFromQueryString'])->setFormat($this->arguments['format'])->uriFor($this->arguments['action'], $this->arguments['arguments'], $this->arguments['controller'], $this->arguments['extensionName'], $this->arguments['pluginName']);
            $this->formActionUriArguments = $uriBuilder->getArguments();
        }
        $this->tag->addAttribute('action', $formActionUri);
    }

    protected function renderAdditionalIdentityFields()
    {
        if ($this->viewHelperVariableContainer->exists(\TYPO3\CMS\Fluid\ViewHelpers\FormViewHelper::class, 'additionalIdentityProperties')) {
            $additionalIdentityProperties = $this->viewHelperVariableContainer->get(\TYPO3\CMS\Fluid\ViewHelpers\FormViewHelper::class, 'additionalIdentityProperties');
            $output = '';
            foreach ($additionalIdentityProperties as $identity) {
                $output .= LF . $identity;
            }
            return $output;
        }
        return '';
    }

    protected function renderHiddenReferrerFields()
    {
        $request = $this->controllerContext->getRequest();
        $extensionName = $request->getControllerExtensionName();
        $vendorName = $request->getControllerVendorName();
        $controllerName = $request->getControllerName();
        $actionName = $request->getControllerActionName();
        $result = LF;
        $result .= '<input type="hidden" name="' . $this->prefixFieldName('__referrer[@extension]') . '" value="' . $extensionName . '" />' . LF;
        if ($vendorName !== null) {
            $result .= '<input type="hidden" name="' . $this->prefixFieldName('__referrer[@vendor]') . '" value="' . $vendorName . '" />' . LF;
        }
        $result .= '<input type="hidden" name="' . $this->prefixFieldName('__referrer[@controller]') . '" value="' . $controllerName . '" />' . LF;
        $result .= '<input type="hidden" name="' . $this->prefixFieldName('__referrer[@action]') . '" value="' . $actionName . '" />' . LF;
        $result .= '<input type="hidden" name="' . $this->prefixFieldName('__referrer[arguments]') . '" value="' . htmlspecialchars($this->hashService->appendHmac(base64_encode(serialize($request->getArguments())))) . '" />' . LF;

        return $result;
    }

    protected function addFormObjectNameToViewHelperVariableContainer()
    {
        $formObjectName = $this->getFormObjectName();
        if ($formObjectName !== null) {
            $this->viewHelperVariableContainer->add(\TYPO3\CMS\Fluid\ViewHelpers\FormViewHelper::class, 'formObjectName', $formObjectName);
        }
    }

    protected function removeFormObjectNameFromViewHelperVariableContainer()
    {
        $formObjectName = $this->getFormObjectName();
        if ($formObjectName !== null) {
            $this->viewHelperVariableContainer->remove(\TYPO3\CMS\Fluid\ViewHelpers\FormViewHelper::class, 'formObjectName');
        }
    }

    protected function getFormObjectName()
    {
        $formObjectName = null;
        if ($this->hasArgument('objectName')) {
            $formObjectName = $this->arguments['objectName'];
        } elseif ($this->hasArgument('name')) {
            $formObjectName = $this->arguments['name'];
        }
        return $formObjectName;
    }

    protected function addFormObjectToViewHelperVariableContainer()
    {
        if ($this->hasArgument('object')) {
            $this->viewHelperVariableContainer->add(\TYPO3\CMS\Fluid\ViewHelpers\FormViewHelper::class, 'formObject', $this->arguments['object']);
            $this->viewHelperVariableContainer->add(\TYPO3\CMS\Fluid\ViewHelpers\FormViewHelper::class, 'additionalIdentityProperties', array());
        }
    }

    protected function removeFormObjectFromViewHelperVariableContainer()
    {
        if ($this->hasArgument('object')) {
            $this->viewHelperVariableContainer->remove(\TYPO3\CMS\Fluid\ViewHelpers\FormViewHelper::class, 'formObject');
            $this->viewHelperVariableContainer->remove(\TYPO3\CMS\Fluid\ViewHelpers\FormViewHelper::class, 'additionalIdentityProperties');
        }
    }

    protected function addFieldNamePrefixToViewHelperVariableContainer()
    {
        $fieldNamePrefix = $this->getFieldNamePrefix();
        $this->viewHelperVariableContainer->add(\TYPO3\CMS\Fluid\ViewHelpers\FormViewHelper::class, 'fieldNamePrefix', $fieldNamePrefix);
    }

    protected function getFieldNamePrefix()
    {
        if ($this->hasArgument('fieldNamePrefix')) {
            return $this->arguments['fieldNamePrefix'];
        } else {
            return $this->getDefaultFieldNamePrefix();
        }
    }

    protected function removeFieldNamePrefixFromViewHelperVariableContainer()
    {
        $this->viewHelperVariableContainer->remove(\TYPO3\CMS\Fluid\ViewHelpers\FormViewHelper::class, 'fieldNamePrefix');
    }

    protected function addFormFieldNamesToViewHelperVariableContainer()
    {
        $this->viewHelperVariableContainer->add(\TYPO3\CMS\Fluid\ViewHelpers\FormViewHelper::class, 'formFieldNames', array());
    }

    protected function removeFormFieldNamesFromViewHelperVariableContainer()
    {
        $this->viewHelperVariableContainer->remove(\TYPO3\CMS\Fluid\ViewHelpers\FormViewHelper::class, 'formFieldNames');
    }

    protected function renderRequestHashField()
    {
        $formFieldNames = $this->viewHelperVariableContainer->get(\TYPO3\CMS\Fluid\ViewHelpers\FormViewHelper::class, 'formFieldNames');
        $this->postProcessUriArgumentsForRequesthash($this->formActionUriArguments, $formFieldNames);
        $requestHash = $this->requestHashService->generateRequestHash($formFieldNames, $this->getFieldNamePrefix());
        // in v4, we need to prefix __hmac as well to make it show up in the request object.
        return '<input type="hidden" name="' . $this->prefixFieldName('__hmac') . '" value="' . htmlspecialchars($requestHash) . '" />';
    }

    protected function postProcessUriArgumentsForRequestHash($arguments, &$results, $currentPrefix = '', $level = 0)
    {
        if (!count($arguments)) {
            return;
        }
        foreach ($arguments as $argumentName => $argumentValue) {
            if (is_array($argumentValue)) {
                $prefix = $level == 0 ? $argumentName : $currentPrefix . '[' . $argumentName . ']';
                $this->postProcessUriArgumentsForRequestHash($argumentValue, $results, $prefix, $level + 1);
            } else {
                $results[] = $level == 0 ? $argumentName : $currentPrefix . '[' . $argumentName . ']';
            }
        }
    }

    protected function getDefaultFieldNamePrefix()
    {
        $request = $this->controllerContext->getRequest();
        if ($this->hasArgument('extensionName')) {
            $extensionName = $this->arguments['extensionName'];
        } else {
            $extensionName = $request->getControllerExtensionName();
        }
        if ($this->hasArgument('pluginName')) {
            $pluginName = $this->arguments['pluginName'];
        } else {
            $pluginName = $request->getPluginName();
        }
        if ($extensionName !== null && $pluginName != null) {
            return $this->extensionService->getPluginNamespace($extensionName, $pluginName);
        } else {
            return '';
        }
    }

    protected function removeCheckboxFieldNamesFromViewHelperVariableContainer()
    {
        if ($this->viewHelperVariableContainer->exists(\TYPO3\CMS\Fluid\ViewHelpers\Form\CheckboxViewHelper::class, 'checkboxFieldNames')) {
            $this->viewHelperVariableContainer->remove(\TYPO3\CMS\Fluid\ViewHelpers\Form\CheckboxViewHelper::class, 'checkboxFieldNames');
        }
    }

    protected function renderTrustedPropertiesField()
    {
        $formFieldNames = $this->viewHelperVariableContainer->get(\TYPO3\CMS\Fluid\ViewHelpers\FormViewHelper::class, 'formFieldNames');
        $requestHash = $this->mvcPropertyMappingConfigurationService->generateTrustedPropertiesToken($formFieldNames, $this->getFieldNamePrefix());
        return '<input type="hidden" name="' . $this->prefixFieldName('__trustedProperties') . '" value="' . htmlspecialchars($requestHash) . '" />';
    }
}