class.tx_ter_api.php 70 KB
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<?php
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/*
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 * This file is part of the TYPO3 CMS project.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 *
 * The TYPO3 project - inspiring people to share!
 */
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/**
 * SOAP server for the TYPO3 Extension Repository
 *
 * @author    Robert Lemke <robert@typo3.org>
 */
use TYPO3\CMS\Core\Utility\ExtensionManagementUtility;
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use TYPO3\CMS\Core\Utility\GeneralUtility;
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require_once(ExtensionManagementUtility::extPath('ter') . 'class.tx_ter_helper.php');

/**
 * TYPO3 Extension Repository, SOAP Server
 *
 * @author     Robert Lemke <robert@typo3.org>
 */
class tx_ter_api
{
    /**
     * @var tx_ter_helper
     */
    protected $helperObj;

    /**
     * @var object
     */
    protected $parentObj;

    /**
     * @var \TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer
     */
    protected $cObj;

    /**
     * @var \TYPO3\CMS\Core\DataHandling\DataHandler
     */
    protected $tce;

    /**
     * 30MB Maximum upload size for extensions
     *
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     * @var int
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     */
    protected $extensionMaxUploadSize = 31457280;

    /**
     * Constructor
     *
     * @param object $parentObj : Reference to parent object
     *
     * @access public
     */
    public function __construct($parentObj)
    {
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        $this->helperObj = new tx_ter_helper($parentObj);
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        $this->parentObj = $parentObj;
        $this->cObj = $parentObj->cObj;
    }

    /*********************************************************
     *
     * PUBLIC API
     *
     *********************************************************/

    /**
     * Test method which just returns the given valued prepended with "pong"
     *
     * @param    string $value
     *
     * @return    string        $value prepended with "pong"
     * @access    public
     * @since     2.0.0
     */
    public function ping($value)
    {
        return 'pong' . $value;
    }

    /**
     * Checks for valid account data
     *
     * @param object $accountData : Username and passwords for auth check
     *
     * @return bool
     * @access public
     * @since 2.0.0
     */
    public function login($accountData)
    {
        return $this->helperObj->checkValidUser($accountData);
    }

    /**
     * Method for uploading an extension to the repository
     *
     * @param    object $accountData : Username and passwords for upload the extension
     * @param    object $extensionInfoData : The general extension information as received by the SOAP server
     * @param    array $filesData : The array of file data objects as received by the SOAP server
     *
     * @return    object        uploadExtensionResult object if upload was successful, otherwise an exception is thrown.
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     * @throws \T3o\Ter\Exception\Exception
     * @throws \T3o\Ter\Exception\VersionExistsException
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     * @access    public
     * @since     2.0.0
     */
    public function uploadExtension(
        $accountData,
        $extensionInfoData,
        $filesData
    ) {// When the extension has only one dependency, $extensionInfoData->technicalData->dependencies is a stdObj instead of an array
        // All following code will then fail, because it is tested if it was an array.
        // To make it work, we wrap the object into an array, so that the following code works as expected
        if (!empty($extensionInfoData->technicalData->dependencies) && is_object(
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            $extensionInfoData->technicalData->dependencies
        )
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        ) {
            $extensionInfoData->technicalData->dependencies = [$extensionInfoData->technicalData->dependencies];
        }
        $extensionKey = strtolower($extensionInfoData->extensionKey);
        if (TYPO3_DLOG) {
            GeneralUtility::devLog(
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                'tx_ter_api->uploadExtension()',
                'ter',
                0,
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                'Upload of extension ' . $extensionKey . ' (' . $extensionInfoData->version . ') by user ' . $accountData->username
            );
        }

        $uploadUserRecordArr = $this->helperObj->getValidUser($accountData);
        $extensionKeyRecordArr = $this->helperObj->getExtensionKeyRecord($extensionKey);
        if ($extensionKeyRecordArr == false) {
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            throw new \T3o\Ter\Exception\NotFoundException('Extension "' . $extensionKey . '" does not exist.', TX_TER_ERROR_UPLOADEXTENSION_EXTENSIONDOESNTEXIST);
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        }
        if (strtolower($extensionKeyRecordArr['ownerusername']) !== strtolower(
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            $accountData->username
        ) && $uploadUserRecordArr['admin'] !== true
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        ) {
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            throw new \T3o\Ter\Exception\UnauthorizedException('Access denied.', TX_TER_ERROR_UPLOADEXTENSION_ACCESSDENIED);
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        }

        // check for a valid version number
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        if (preg_match('/^(0|[1-9]\d{0,2})\.(0|[1-9]\d{0,2})\.(0|[1-9]\d{0,2})$/', $extensionInfoData->version) == false) {
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            throw new \T3o\Ter\Exception\Exception(
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                'Your version number "' . htmlspecialchars(
                    $extensionInfoData->version
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                ) . '" is invalid. Allowed are three numbers with maximum 999, e.g. "7.8.999".',
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            );
        }

        if ($this->checkUploadedExtensionVersionExistsInRepository($extensionInfoData)) {
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            throw new \T3o\Ter\Exception\VersionExistsException(
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                'Version number ' . $extensionInfoData->version . ' already exists in repository.',
                TX_TER_ERROR_UPLOADEXTENSION_EXTENSIONVERSIONEXISTS
            );
        }

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        if (trim((string)$extensionInfoData->infoData->uploadComment) === '') {
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            throw new \T3o\Ter\Exception\NoUploadCommentException(
                'You need to set an upload comment!',
                TX_TER_ERROR_UPLOADEXTENSION_NOUPLOADCOMMENT
            );
        }

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        if (($typo3DependencyCheck = static::checkExtensionDependencyOnSupportedTypo3Version($extensionInfoData)) !== true && $uploadUserRecordArr['admin'] !== true) {
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            switch ($typo3DependencyCheck) {
                case TX_TER_ERROR_UPLOADEXTENSION_TYPO3DEPENDENCYINCORRECT:
                    $message = 'Extension does not have a dependency for a supported version of TYPO3. See http://typo3.org/news/article/announcing-ter-cleanup-process/ for how to fix this.';
                    break;
                case TX_TER_ERROR_UPLOADEXTENSION_TYPO3DEPENDENCYCHECKFAILED:
                default:
                    $message = 'Check on dependency for a supported version of TYPO3 failed due to technical reasons';
                    break;
            }
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            throw new \T3o\Ter\Exception\FailedDependencyException($message, $typo3DependencyCheck);
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        }

        $this->uploadExtension_writeExtensionAndIconFile($extensionInfoData, $filesData);
        $this->uploadExtension_writeExtensionInfoToDB($accountData, $extensionInfoData, $filesData);
        $this->helperObj->requestUpdateOfExtensionIndexFile();

        static::notifyExtensionVersionUpload($extensionInfoData);

        return [
            'resultCode' => TX_TER_RESULT_EXTENSIONSUCCESSFULLYUPLOADED,
            'resultMessages' => [
                'Please note that it might take a while (up to an hour) until your extension and the documentation appear on TYPO3.org.'
            ],
            'version' => $extensionInfoData->version,
        ];
    }

    /**
     * notify message queue server of uploaded extension
     *
     * has to be static because uploadExtensionWithoutSoap() is static
     *
     * @param $extensionInfoData
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     * @deprecated The method used to notifiy via Tx_Amqp_Service_ProducerService, which is no longer available
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     */
    protected static function notifyExtensionVersionUpload($extensionInfoData)
    {
    }

    /**
     * Method for manually uploading an extension to the repository
     *
     * @param string $username Username for upload the extension
     * @param object $extensionInfoData The general extension information
     * @param array $filesData The array of file data objects
     *
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     * @return bool TRUE on success
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     *
     * @throws \T3o\Ter\Exception\Exception
     * @throws \T3o\Ter\Exception\NotFoundException
     * @throws \T3o\Ter\Exception\UnauthorizedException
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     */
    public static function uploadExtensionWithoutSoap($username, $extensionInfoData, $filesData)
    {
        // Make an instance of the api
        $extConf = unserialize($GLOBALS['TYPO3_CONF_VARS']['EXT']['extConf']['ter']);
        $dummyParentObject = (object)[
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            'cObj' => GeneralUtility::makeInstance(\TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer::class),
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            'extensionsPID' => $GLOBALS['TSFE']->tmpl->setup['plugin.']['tx_ter_pi1.']['pid'],
            'repositoryDir' => $extConf['repositoryDir'],
            'conf' => $GLOBALS['TSFE']->tmpl->setup['plugin.']['tx_ter_pi1.'],
        ];
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        $instance = GeneralUtility::makeInstance(\tx_ter_api::class, $dummyParentObject);
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        $accountData = (object)['username' => $username];
        // Load extension
        $extensionKeyRecordArr = $instance->helperObj->getExtensionKeyRecord(strtolower($extensionInfoData->extensionKey));
        if ($extensionKeyRecordArr == false) {
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            throw new \T3o\Ter\Exception\NotFoundException('Extension does not exist.', TX_TER_ERROR_UPLOADEXTENSION_EXTENSIONDOESNTEXIST);
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        }
        if (strtolower($extensionKeyRecordArr['ownerusername']) !== strtolower($username)) {
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            throw new \T3o\Ter\Exception\UnauthorizedException('Access denied.', TX_TER_ERROR_UPLOADEXTENSION_ACCESSDENIED);
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        }

        // check for a valid version number
        if (preg_match('/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$/', $extensionInfoData->version) == false) {
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            throw new \T3o\Ter\Exception\Exception(
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                'Your version number "' . htmlspecialchars(
                    $extensionInfoData->version
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                ) . '" is invalid. Allowed are three numbers with maximum 999, e.g. "7.8.999".',
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            );
        }

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        if (($typo3DependencyCheck = static::checkExtensionDependencyOnSupportedTypo3Version($extensionInfoData)) !== true) {
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            switch ($typo3DependencyCheck) {
                case TX_TER_ERROR_UPLOADEXTENSION_TYPO3DEPENDENCYINCORRECT:
                    $message = 'Extension does not have a dependency for a supported version of TYPO3. See http://typo3.org/news/article/announcing-ter-cleanup-process/ for how to fix this.';
                    break;
                case TX_TER_ERROR_UPLOADEXTENSION_TYPO3DEPENDENCYCHECKFAILED:
                    // same behaviour as default
                default:
                    $message = 'Check on dependency for a supported version of TYPO3 failed due to technical reasons';
                    break;
            }
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            throw new \T3o\Ter\Exception\Exception($message, $typo3DependencyCheck);
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        }
        // Upload...
        $instance->uploadExtension_writeExtensionAndIconFile($extensionInfoData, $filesData);
        $instance->uploadExtension_writeExtensionInfoToDB($accountData, $extensionInfoData, $filesData);
        $instance->helperObj->requestUpdateOfExtensionIndexFile();

        static::notifyExtensionVersionUpload($extensionInfoData);

        return true;
    }

    /**
     * Method for deleting an extension version from the repository
     *
     * @param object $accountData : Username and passwords for upload the extension (admin account required)
     * @param string $extensionKey : Extension key of the extension version to delete
     * @param string $version : Version string of the extension version to delete
     *
     * @return object simpleResult object if extension could be deleted, otherwise an exception is thrown.
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     * @throws \T3o\Ter\Exception\UnauthorizedException
     * @throws \T3o\Ter\Exception\NotFoundException
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     * @access public
     * @since  2.0.1
     */
    public function deleteExtension($accountData, $extensionKey, $version)
    {
        if (TYPO3_DLOG) {
            GeneralUtility::devLog(
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                'tx_ter_api->deleteExtension()',
                'ter',
                0,
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                'Deletion of extension ' . $extensionKey . ' (' . $version . ') by user ' . $accountData->username
            );
        }

        $userRecordArr = $this->helperObj->getValidUser($accountData);
        if ($userRecordArr['admin'] !== true) {
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            throw new \T3o\Ter\Exception\UnauthorizedException(
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                'Access denied. You must be administrator in order to delete extensions',
                TX_TER_ERROR_DELETEEXTENSION_ACCESS_DENIED
            );
        }
        $extensionKeyRecordArr = $this->helperObj->getExtensionKeyRecord($extensionKey);
        if ($extensionKeyRecordArr == false) {
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            throw new \T3o\Ter\Exception\NotFoundException(
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                'Extension does not exist.',
                TX_TER_ERROR_DELETEEXTENSION_EXTENSIONDOESNTEXIST
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            );
        }

        $this->deleteExtension_deleteFromDBAndRemoveFiles($extensionKey, $version);
        $this->helperObj->requestUpdateOfExtensionIndexFile();

        return [
            'resultCode' => TX_TER_RESULT_EXTENSIONSUCCESSFULLYDELETED,
            'resultMessages' => []
        ];
    }

    /**
     * Checks if an extension key already exists
     *
     * @param    object $accountData : A valid username and password
     * @param    string $extensionKey : The extension key to check
     *
     * @return    array simpleResult object if key could be checked, otherwise an exception is thrown.
     * @access    public
     * @since     2.0.0
     */
    public function checkExtensionKey($accountData, $extensionKey)
    {
        if ($this->checkExtensionKey_extensionKeyIsFormallyValid($extensionKey)) {
            $resultCode = $this->helperObj->extensionKeyIsAvailable(
                $extensionKey
            ) ? TX_TER_RESULT_EXTENSIONKEYDOESNOTEXIST : TX_TER_RESULT_EXTENSIONKEYALREADYEXISTS;
        } else {
            $resultCode = TX_TER_RESULT_EXTENSIONKEYNOTVALID;
        }

        return [
            'resultCode' => $resultCode,
            'resultMessages' => [],
        ];
    }

    /**
     * Registers an extension key
     *
     * @param    object $accountData : A valid username and password
     * @param    object $registerExtensionKeyData : The extension key and other information
     *
     * @return    array simpleResult object if key was registered, otherwise an exception is thrown.
     * @access    public
     * @since     2.0.0
     */
    public function registerExtensionKey($accountData, $registerExtensionKeyData)
    {
        if ($this->checkExtensionKey_extensionKeyIsFormallyValid($registerExtensionKeyData->extensionKey)) {
            if ($this->helperObj->extensionKeyIsAvailable($registerExtensionKeyData->extensionKey)) {
                $this->registerExtensionKey_writeExtensionKeyInfoToDB($accountData, $registerExtensionKeyData);
                $resultCode = TX_TER_RESULT_EXTENSIONKEYSUCCESSFULLYREGISTERED;
            } else {
                $this->notifyExtensionKeyRegistration($registerExtensionKeyData);
                $resultCode = TX_TER_RESULT_EXTENSIONKEYALREADYEXISTS;
            }
        } else {
            $resultCode = TX_TER_RESULT_EXTENSIONKEYNOTVALID;
        }

        return [
            'resultCode' => $resultCode,
            'resultMessages' => [],
        ];
    }

    /**
     * notify message queue server of registered extension key
     *
     * @param $registerExtensionKeyData
     * @return mixed
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     * @deprecated The method used to notifiy via Tx_Amqp_Service_ProducerService, which is no longer available
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     */
    protected function notifyExtensionKeyRegistration($registerExtensionKeyData)
    {
    }

    /**
     * Returns a list of extension key records filtered by certain
     * criteria.
     *
     * @param    object $accountData : A valid username and password
     * @param    object $extensionKeyFilterOptions : Result will be filtered by fields set in these filter options
     *
     * @return    array getExtensionKeyRepsonse-object if key(s) could be fetched (might also be an empty result). An exception
     *     is thrown if an error ocurred.
     * @access    public
     * @since     2.0.0
     */
    public function getExtensionKeys($accountData, $extensionKeyFilterOptions)
    {
        $extensionKeyDataArr = [];

        $whereClause = 'pid=' . (int)$this->parentObj->extensionsPID;
        if (!empty($extensionKeyFilterOptions->username)) {
            $whereClause .= ' AND ownerusername = ' . $GLOBALS['TYPO3_DB']->fullQuoteStr(
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                $extensionKeyFilterOptions->username,
                'tx_ter_extensionkeys'
            );
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        }
        if (!empty($extensionKeyFilterOptions->title)) {
            $whereClause .= ' AND title = ' . $GLOBALS['TYPO3_DB']->fullQuoteStr(
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                $extensionKeyFilterOptions->title,
                'tx_ter_extensionkeys'
            );
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        }
        if (!empty($extensionKeyFilterOptions->description)) {
            $whereClause .= ' AND description = ' . $GLOBALS['TYPO3_DB']->fullQuoteStr(
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                $extensionKeyFilterOptions->description,
                'tx_ter_extensionkeys'
            );
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        }
        if (!empty($extensionKeyFilterOptions->extensionKey)) {
            $whereClause .= ' AND extensionkey = ' . $GLOBALS['TYPO3_DB']->fullQuoteStr(
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                $extensionKeyFilterOptions->extensionKey,
                'tx_ter_extensionkeys'
            );
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        }

        $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
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            'extensionkey,title,description,ownerusername',
            'tx_ter_extensionkeys',
            $whereClause
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        );

        if ($res) {
            while (($row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res))) {
                $extensionKeyDataArr[] = $row;
            }
            $resultCode = TX_TER_RESULT_GENERAL_OK;
        } else {
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            throw new \T3o\Ter\Exception\InternalServerErrorException(
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                'Database error while fetching extension keys.',
                TX_TER_ERROR_GENERAL_DATABASEERROR
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            );
        }

        return [
            'simpleResult' => [
                'resultCode' => $resultCode,
                'resultMessages' => []
            ],
            'extensionKeyData' => $extensionKeyDataArr
        ];
    }

    /**
     * Deletes an extension key. Only possible if no uploaded versions exist.
     *
     * @param object $accountData : A valid username and password
     * @param string $extensionKey : The extension key to delete
     *
     * @return object simpleResponse-object. An exception is thrown if a fatal error ocurred.
     * @access public
     * @since  2.0.0
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     * @throws \T3o\Ter\Exception\InternalServerErrorException
     * @throws \T3o\Ter\Exception\UnauthorizedException
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     */
    public function deleteExtensionKey($accountData, $extensionKey)
    {
        $userRecordArr = $this->helperObj->getValidUser($accountData);
        $extensionKeyRecordArr = $this->helperObj->getExtensionKeyRecord($extensionKey);

        if (is_array($extensionKeyRecordArr)) {
            if (strtolower($extensionKeyRecordArr['ownerusername']) != strtolower(
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                $accountData->username
            ) && $userRecordArr['admin'] !== true
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            ) {
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                throw new \T3o\Ter\Exception\UnauthorizedException('Access denied.', TX_TER_ERROR_DELETEEXTENSIONKEY_ACCESSDENIED);
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            }

            $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
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                'extensionkey',
                'tx_ter_extensions',
                'extensionkey=' . $GLOBALS['TYPO3_DB']->fullQuoteStr(
                    $extensionKey,
                    'tx_ter_extensions'
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                ) . ' AND pid=' . (int)$this->parentObj->extensionsPID
            );

            if ($res) {
                if ($GLOBALS['TYPO3_DB']->sql_num_rows($res) > 0) {
                    $resultCode = TX_TER_ERROR_DELETEEXTENSIONKEY_CANTDELETEBECAUSEVERSIONSEXIST;
                } else {
                    $res = $GLOBALS['TYPO3_DB']->exec_DELETEquery(
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                        'tx_ter_extensionkeys',
                        'extensionkey=' . $GLOBALS['TYPO3_DB']->fullQuoteStr(
                            $extensionKey,
                            'tx_ter_extensions'
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                        ) . ' AND pid=' . (int)$this->parentObj->extensionsPID
                    );
                    if (!$res) {
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                        throw new \T3o\Ter\Exception\InternalServerErrorException(
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                            'Database error while deleting extension key.',
                            TX_TER_ERROR_GENERAL_DATABASEERROR
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                        );
                    }

                    $resultCode = TX_TER_RESULT_GENERAL_OK;
                    $this->notifyExtensionKeyDelete($extensionKey);
                }
            } else {
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                throw new \T3o\Ter\Exception\InternalServerErrorException(
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                    'Database error while fetching versions.',
                    TX_TER_ERROR_GENERAL_DATABASEERROR
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                );
            }
        } else {
            $resultCode = TX_TER_ERROR_DELETEEXTENSIONKEY_KEYDOESNOTEXIST;
        }

        return [
            'resultCode' => $resultCode,
            'resultMessages' => []
        ];
    }

    /**
     * notify message queue server of deleted extension key
     *
     * @param $extensionKey
     * @return mixed
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     * @deprecated The method used to notifiy via Tx_Amqp_Service_ProducerService, which is no longer available
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     */
    protected function notifyExtensionKeyDelete($extensionKey)
    {
    }

    /**
     * Modifies an extension key.
     *
     * @param object $accountData : A valid username and password
     * @param object $modifyExtensionKeyData : Fields which should be changed, "extensionKey" is mandatory.
     *
     * @return object simpleResponse-object. An exception is thrown if a fatal error ocurred.
     * @access public
     * @since  2.0.0
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     * @throws \T3o\Ter\Exception\UnauthorizedException
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     */
    public function modifyExtensionKey($accountData, $modifyExtensionKeyData)
    {
        $userRecordArr = $this->helperObj->getValidUser($accountData);
        $extensionKeyRecordArr = $this->helperObj->getExtensionKeyRecord($modifyExtensionKeyData->extensionKey);

        if (is_array($extensionKeyRecordArr)) {
            if (strtolower($extensionKeyRecordArr['ownerusername']) != strtolower(
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                $accountData->username
            ) && $userRecordArr['admin'] !== true
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            ) {
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                throw new \T3o\Ter\Exception\UnauthorizedException('Access denied.', TX_TER_ERROR_MODIFYEXTENSIONKEY_ACCESSDENIED);
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            }
            $resultCode = $this->modifyExtensionKey_writeModifiedKeyRecordIntoDB($accountData, $modifyExtensionKeyData);
            $this->helperObj->requestUpdateOfExtensionIndexFile();
        } else {
            $resultCode = TX_TER_ERROR_MODIFYEXTENSIONKEY_KEYDOESNOTEXIST;
        }

        return [
            'resultCode' => $resultCode,
            'resultMessages' => []
        ];
    }

    /**
     * Sets the review state of an extension version
     *
     * @param    object $accountData : A valid username and password
     * @param    object $setReviewStateData : The extension key, version number and the new review state (integer)
     *
     * @return    array simpleResponse-object. An exception is thrown if a fatal error ocurred.
     * @access    public
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     * @throws    \T3o\Ter\Exception\InternalServerErrorException
     * @throws    \T3o\Ter\Exception\UnauthorizedException
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     * @since     2.0.0
     */
    public function setReviewState($accountData, $setReviewStateData)
    {
        $userRecordArr = $this->helperObj->getValidUser($accountData);
        $reviewersFrontendUsergroupUid = (int)$this->parentObj->conf['reviewersFrontendUsergroupUid'];

        if ($reviewersFrontendUsergroupUid == 0) {
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            throw new \T3o\Ter\Exception\InternalServerErrorException(
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                'Warning: No usergroup for reviewers has been defined on the server side. Aborting ...',
                TX_TER_ERROR_SETREVIEWSTATE_NOUSERGROUPDEFINED
            );
        }
        if (!GeneralUtility::inList($userRecordArr['usergroup'], $reviewersFrontendUsergroupUid)) {
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            throw new \T3o\Ter\Exception\UnauthorizedException('Access denied.', TX_TER_ERROR_SETREVIEWSTATE_ACCESSDENIED);
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        }

        $this->setReviewState_writeNewStateIntoDB($setReviewStateData);

        //Regeneration of index file is currently deactived:
        //$this->helperObj->requestUpdateOfExtensionIndexFile();

        return [
            'resultCode' => TX_TER_RESULT_GENERAL_OK,
            'resultMessages' => []
        ];
    }

    /**
     * Increases the download counters of several extension version
     *
     * @param    object $accountData : A valid username and password
     * @param    object $extensionVersionsAndIncrementors : An array of extension keys, version numbers and the incrementor
     *
     * @return    object        simpleResponse-object. An exception is thrown if a fatal error ocurred.
     * @access    public
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     * @throws    \T3o\Ter\Exception\InternalServerErrorException
     * @throws    \T3o\Ter\Exception\UnauthorizedException
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     * @since     2.0.0
     */
    public function increaseExtensionDownloadCounters($accountData, $extensionVersionsAndIncrementors)
    {
        $errorMessages = [];

        GeneralUtility::devLog(
            'DownloadCounter: Trying to increase extension download counters - user "' . $accountData->username . '" connected from IP "' . GeneralUtility::getIndpEnv(
                'REMOTE_ADDR'
            ) . '" - number of results: ' . count($extensionVersionsAndIncrementors->extensionVersionAndIncrementor),
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            'tx_ter_api',
            0
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        );

        $userRecordArr = $this->helperObj->getValidUser($accountData);
        $mirrorsFrontendUsergroupUid = (int)$this->parentObj->conf['mirrorsFrontendUsergroupUid'];

        if ($mirrorsFrontendUsergroupUid == 0) {
            GeneralUtility::devLog(
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                'DownloadCounter: No usergroup for mirrors has been defined on the server side. Aborting ...',
                'tx_ter_api',
                3
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            );
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            throw new \T3o\Ter\Exception\InternalServerErrorException(
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                'Warning: No usergroup for mirrors has been defined on the server side. Aborting ...',
                TX_TER_ERROR_INCREASEEXTENSIONDOWNLOADCOUNTER_NOUSERGROUPDEFINED
            );
        }
        if (!GeneralUtility::inList($userRecordArr['usergroup'], $mirrorsFrontendUsergroupUid)) {
            GeneralUtility::devLog(
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                'DownloadCounter: Access denied for user ' . $accountData->username,
                'tx_ter_api',
                3,
                $userRecordArr
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            );
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            throw new \T3o\Ter\Exception\UnauthorizedException('Access denied.', TX_TER_ERROR_INCREASEEXTENSIONDOWNLOADCOUNTER_ACCESSDENIED);
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        }

        $counter = 0;
        if (is_array($extensionVersionsAndIncrementors->extensionVersionAndIncrementor)) {
            foreach ($extensionVersionsAndIncrementors->extensionVersionAndIncrementor as $extensionVersionAndIncrementor) {
                try {
                    $this->increaseExtensionDownloadCounter_increaseCounterInDB($extensionVersionAndIncrementor);
                    $counter++;
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                } catch (Exception $exception) {
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                    $errorMessages[] = '[' . $extensionVersionAndIncrementor->extensionKey . '][' . $extensionVersionAndIncrementor->version . '] ' . $exception->faultstring;
                }
            }
        } else {
            try {
                $extensionVersionAndIncrementor = $extensionVersionsAndIncrementors->extensionVersionAndIncrementor;
                $this->increaseExtensionDownloadCounter_increaseCounterInDB($extensionVersionAndIncrementor);
                $counter++;
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            } catch (Exception $exception) {
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                $errorMessages[] = '[' . $extensionVersionAndIncrementor->extensionKey . '][' . $extensionVersionAndIncrementor->version . '] ' . $exception->faultstring;
            }
        }

        GeneralUtility::devLog(
            'DownloadCounter: Increased download counter for ' . $counter . ' extensions. User "' . $accountData->username . '".',
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            'tx_ter_api',
            0
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        );
        // Update extension index file
        $this->helperObj->requestUpdateOfExtensionIndexFile();

        // Return results including list of error messages if any
        if (!empty($errorMessages)) {
            GeneralUtility::devLog(
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                'DownloadCounter: Errors occured for user "' . $accountData->username . '".',
                'tx_ter_api',
                2,
                $errorMessages
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            );
            $result = [
                'resultCode' => TX_TER_RESULT_ERRORS_OCCURRED,
                'resultMessages' => $errorMessages
            ];
        } else {
            GeneralUtility::devLog('DownloadCounter: Everything OK. User "' . $accountData->username . '".', 'tx_ter_api', -1);
            $result = [
                'resultCode' => TX_TER_RESULT_GENERAL_OK,
                'resultMessages' => []
            ];
        }

        return $result;
    }

    /*********************************************************
     *
     * uploadExtension helper functions
     *
     *********************************************************/

    /**
     * Creates a T3X file by using the extension info data and the files data and
     * writes the file to the repository's directory. By default this function creates
     * gzip compressed T3X files.
     *
     * After writing the extension, some files specific data (like the file size) is
     * added to $extensionInfoData for later informational use.
     *
     * This function additionally extracts the preview images and the extension icon by calling
     * saveImages().
     *
     * @param object $extensionInfoData : The general extension information as received by the SOAP server
     * @param object $filesData : The array of file data objects as received by the SOAP server
     *
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     * @throws \T3o\Ter\Exception\InternalServerErrorException
     * @throws \T3o\Ter\Exception\NotFoundException
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     * @access protected
     */
    public function uploadExtension_writeExtensionAndIconFile(&$extensionInfoData, $filesData)
    {
        if (!@is_dir($this->parentObj->repositoryDir)) {
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            throw new \T3o\Ter\Exception\InternalServerErrorException(
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                'Extension repository directory does not exist.',
                TX_TER_ERROR_GENERAL_EXTREPDIRDOESNTEXIST
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            );
        }
        if (!is_array($filesData->fileData)) {
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            throw new \T3o\Ter\Exception\NotFoundException('Extension contains no files.', TX_TER_ERROR_GENERAL_EXTENSIONCONTAINSNOFILES);
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        }

        // Prepare Files Data Array:
        $preparedFilesDataArr = [];
        foreach ($filesData->fileData as $fileData) {
            $decodedContent = base64_decode($fileData->content);
            if ($fileData->contentMD5 != md5($decodedContent)) {
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                throw new \T3o\Ter\Exception\NotFoundException(
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                    'MD5 does not match for file ' . (string)$fileData->name,
                    TX_TER_ERROR_UPLOADEXTENSION_FILEMD5DOESNOTMATCH
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                );
            }

            $preparedFilesDataArr[$fileData->name] = [
                'name' => $fileData->name,
                'size' => $fileData->size,
                'mtime' => $fileData->modificationTime,
                'is_executable' => $fileData->isExecutable,
                'content' => $decodedContent,
                'content_md5' => md5($decodedContent)
            ];
        }

        $extensionKey = strtolower($extensionInfoData->extensionKey);
        $constraints = [];

        if (is_array($extensionInfoData->technicalData->dependencies)) {
            foreach ($extensionInfoData->technicalData->dependencies as $dependency) {
                $dependency = json_decode(json_encode($dependency), true);
                if (!empty($dependency['kind']) && !empty($dependency['extensionKey']) && in_array(
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                    $dependency['kind'],
                    ['depends', 'conflicts', 'suggests'],
                    true
                )
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                ) {
                    $constraints[$dependency['kind']][$dependency['extensionKey']] = (string)$dependency['versionRange'];
                }
            }
        }

        // Prepare EM_CONF Array:
        $preparedEMConfArr = [
            'title' => $extensionInfoData->metaData->title,
            'description' => $extensionInfoData->metaData->description,
            'category' => $extensionInfoData->metaData->category,
            'shy' => in_array(strtolower((string)$extensionInfoData->technicalData->shy), ['1', 'false'], true),
            'version' => $extensionInfoData->version,
            'priority' => $extensionInfoData->technicalData->priority,
            'loadOrder' => $extensionInfoData->technicalData->loadOrder,
            'module' => $extensionInfoData->technicalData->modules,
            'state' => $extensionInfoData->metaData->state,
            'uploadfolder' => in_array(strtolower((string)$extensionInfoData->technicalData->uploadFolder), ['1', 'false'], true),
            'createDirs' => $extensionInfoData->technicalData->createDirs,
            'modify_tables' => $extensionInfoData->technicalData->modifyTables,
            'clearcacheonload' => in_array(
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                strtolower((string)$extensionInfoData->technicalData->clearCacheOnLoad),
                ['1', 'false'],
                true
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            ),
            'lockType' => $extensionInfoData->technicalData->lockType,
            'author' => $extensionInfoData->metaData->authorName,
            'author_email' => $extensionInfoData->metaData->authorEmail,
            'author_company' => $extensionInfoData->metaData->authorCompany,
            'CGLcompliance' => $extensionInfoData->infoData->codingGuidelineCompliance,
            'CGLcompliance_note' => $extensionInfoData->infoData->codeingGuidelineComplianceNote,
            'constraints' => $constraints
        ];

        // Compile T3X Data Array:
        $dataArr = [
            'extKey' => $extensionKey,
            'EM_CONF' => $preparedEMConfArr,
            'misc' => [],
            'techInfo' => [],
            'FILES' => $preparedFilesDataArr
        ];

        $t3xFileUncompressedData = serialize($dataArr);
        $t3xFileData = md5($t3xFileUncompressedData) . ':gzcompress:' . gzcompress($t3xFileUncompressedData);

        // Check if size of t3x file is too big:
        if (strlen($t3xFileData) > $this->extensionMaxUploadSize) {
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            throw new \T3o\Ter\Exception\NotFoundException(
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                'The extension size exceeded ' . $this->extensionMaxUploadSize . ' bytes which is the maximum for extension uploads.',
                TX_TER_ERROR_UPLOADEXTENSION_EXTENSIONTOOBIG
            );
        }

        // Create directories and build filenames:
        $firstLetter = strtolower(substr($extensionInfoData->extensionKey, 0, 1));
        $secondLetter = strtolower(substr($extensionInfoData->extensionKey, 1, 1));
        $fullPath = $this->parentObj->repositoryDir . $firstLetter . '/' . $secondLetter . '/';

        if (@!is_dir($this->parentObj->repositoryDir . $firstLetter)) {
            mkdir($this->parentObj->repositoryDir . $firstLetter);
        }
        if (@!is_dir($this->parentObj->repositoryDir . $firstLetter . '/' . $secondLetter)) {
            mkdir($this->parentObj->repositoryDir . $firstLetter . '/' . $secondLetter);
        }

        list($majorVersion, $minorVersion, $devVersion) = GeneralUtility::intExplode(
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            '.',
            $extensionInfoData->version
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        );
        $t3xFileName = $extensionKey . '_' . $majorVersion . '.' . $minorVersion . '.' . $devVersion . '.t3x';

        // Write the files
        $fh = @fopen($fullPath . $t3xFileName, 'wb');
        if (!$fh) {
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            throw new \T3o\Ter\Exception\InternalServerErrorException(
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                'Write error while writing .t3x file: ' . $fullPath . $t3xFileName,
                TX_TER_ERROR_UPLOADEXTENSION_WRITEERRORWHILEWRITINGFILES
            );
        }
        fwrite($fh, $t3xFileData);
        fclose($fh);

        $imageBaseName = $extensionKey . '_' . $majorVersion . '.' . $minorVersion . '.' . $devVersion;
        $this->saveImages($preparedFilesDataArr, $imageBaseName, $fullPath);

        // Write some data back to $extensionInfoData:
        $extensionInfoData->t3xFileMD5 = md5($t3xFileData);
        $extensionInfoData->infoData->dataSize = strlen($t3xFileUncompressedData);
        $extensionInfoData->infoData->dataSizeCompressed = strlen($t3xFileData);
    }

    /**
     * Extracts information from the extension information and stores it as a record in the database
     * tables. These tables are used for quickly getting information about extensions for display
     * in the TER frontend plugin.
     *
     * Note: All data written to the database (like everywhere else in the TER handling) is assumed to be
     * utf-8 encoded!
     *
     * @param    object $accountData : Username and passwords
     * @param    object $extensionInfoData : The general extension information as received by the SOAP server
     * @param    array $filesData : The array of file data objects as received by the SOAP server
     *
     * @access    public
     */
    public function uploadExtension_writeExtensionInfoToDB($accountData, $extensionInfoData, $filesData)
    {
        // Prepare information about files
        $extensionInfoData->technicalData->isManualIncluded = 0;
        $composerInfo = [];
        foreach ($filesData->fileData as $fileData) {
            $extensionInfoData->infoData->files[$fileData->name] = [
                'filename' => $fileData->name,
                'size' => $fileData->size,
                'mtime' => $fileData->modificationTime,
                'is_executable' => $fileData->isExecutable,
            ];

            switch (trim($fileData->name, '/\\')) {
                case 'doc/manual.sxw':
                    $extensionInfoData->technicalData->isManualIncluded = 1;
                    break;
                case 'ext_emconf.php':
                    $autoload = [];
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                    if (is_callable(\T3o\TerFe2\Utility\ArchiveUtility::class . '::extractEmConf')) {
                        $emConfData = \T3o\TerFe2\Utility\ArchiveUtility::extractEmConf(base64_decode($fileData->content));
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                        if (!empty($emConfData['autoload'])) {
                            $autoload = $emConfData['autoload'];
                        }
                    }
                    break;
                case 'composer.json':
                    $composerJsonData = json_decode(base64_decode($fileData->content), true);
                    if (!empty($composerJsonData['autoload'])) {
                        $composerInfo['autoload'] = $composerJsonData['autoload'];
                    }
                    $composerInfo['name'] = $composerJsonData['name'];
                    break;
                default:
                    // Nothing to do here
            }
        }
        if (empty($composerInfo) && !empty($autoload)) {
            $composerInfo = ['autoload' => $autoload];
        }
        $extensionInfoData->technicalData->composerInfo = $composerInfo;
        $extensionKey = strtolower($extensionInfoData->extensionKey);

        // Prepare the new records
        $extensionRow = [
            'tstamp' => $GLOBALS['SIM_EXEC_TIME'],
            'crdate' => $GLOBALS['SIM_EXEC_TIME'],
            'pid' => (int)$this->parentObj->extensionsPID,
            'extensionkey' => $extensionKey,
            'version' => $extensionInfoData->version,
            'title' => $extensionInfoData->metaData->title,
            'description' => $extensionInfoData->metaData->description,
            'state' => $extensionInfoData->metaData->state,
            'category' => $extensionInfoData->metaData->category,
            'ismanualincluded' => $extensionInfoData->technicalData->isManualIncluded,
            't3xfilemd5' => $extensionInfoData->t3xFileMD5,
            'reviewstate' => 0,
        ];

        // Update an existing or insert a new extension record
        $table = 'tx_ter_extensions';
        $where = 'extensionkey = ' . $GLOBALS['TYPO3_DB']->fullQuoteStr($extensionKey, $table) . '
				  AND version  = ' . $GLOBALS['TYPO3_DB']->fullQuoteStr($extensionInfoData->version, $table);
        $extensionUid = $this->updateOrInsertRecord($table, $extensionRow, $where);

        // Get dependencies
        $dependenciesArr = [];
        if (is_array($extensionInfoData->technicalData->dependencies)) {
            foreach ($extensionInfoData->technicalData->dependencies as $dependency) {
                $dependencyAsArray = (array)$dependency;
                if ($dependencyAsArray['extensionKey']) {
                    $dependenciesArr[] = [
                        'kind' => $dependencyAsArray['kind'],
                        'extensionKey' => $dependencyAsArray['extensionKey'],
                        'versionRange' => $dependencyAsArray['versionRange']
                    ];
                }
            }
        }

        // Cleanup some attributes
        $attributes = ['shy', 'uploadFolder', 'clearCacheOnLoad'];
        foreach ($attributes as $attribute) {
            if (empty($extensionInfoData->technicalData->$attribute) || $extensionInfoData->technicalData->$attribute === 'false') {
                $extensionInfoData->technicalData->$attribute = false;
            } else {
                $extensionInfoData->technicalData->$attribute = true;
            }
        }

        // Prepare details row
        $extensionDetailsRow = [
            'pid' => (int)$this->parentObj->extensionsPID,
            'extensionuid' => (int)$extensionUid,
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            'uploadcomment' => (string)$extensionInfoData->infoData->uploadComment,
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            'lastuploadbyusername' => $accountData->username,
            'lastuploaddate' => $GLOBALS['SIM_EXEC_TIME'],
            'datasize' => $extensionInfoData->infoData->dataSize,
            'datasizecompressed' => $extensionInfoData->infoData->dataSizeCompressed,
            'files' => serialize($extensionInfoData->infoData->files),
            'codelines' => $extensionInfoData->infoData->codeLines,
            'codebytes' => $extensionInfoData->infoData->codeBytes,
            'techinfo' => serialize($extensionInfoData->infoData->techInfo),
            'composerinfo' => json_encode($extensionInfoData->technicalData->composerInfo),
            'shy' => (int)$extensionInfoData->technicalData->shy,
            'dependencies' => serialize($dependenciesArr),
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            'createdirs' => (string)$extensionInfoData->technicalData->createDirs,
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            'priority' => $extensionInfoData->technicalData->priority,
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            'modules' => (string)$extensionInfoData->technicalData->modules,
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            'uploadfolder' => (int)$extensionInfoData->technicalData->uploadFolder,
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            'modifytables' => (string)$extensionInfoData->technicalData->modifyTables,
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            'clearcacheonload' => (int)$extensionInfoData->technicalData->clearCacheOnLoad,
            'locktype' => $extensionInfoData->technicalData->lockType,
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            'authorname' => (string)$extensionInfoData->metaData->authorName,
            'authoremail' => (string)$extensionInfoData->metaData->authorEmail,
            'authorcompany' => (string)$extensionInfoData->metaData->authorCompany,
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            'codingguidelinescompliance' => $extensionInfoData->infoData->codingGuidelinesCompliance,
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            'codingguidelinescompliancenote' => (string)$extensionInfoData->infoData->codingGuidelinesComplianceNote,
            'loadorder' => (string)$extensionInfoData->technicalData->loadOrder,
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        ];

        // Update an existing or insert a new extension details record
        $table = 'tx_ter_extensiondetails';
        $where = 'extensionuid = ' . (int)$extensionUid;
        $this->updateOrInsertRecord($table, $extensionDetailsRow, $where);

        // Put new extension version into queue
        $extensionQueue = [
            'pid' => (int)$this->parentObj->extensionsPID,
            'extensionuid' => (int)$extensionUid,
            'extensionkey' => $extensionKey,
        ];

        $table = 'tx_ter_extensionqueue';
        $this->updateOrInsertRecord($table, $extensionQueue);
    }

    /*********************************************************
     *
     * deleteExtension helper functions
     *
     *********************************************************/

    /**
     * Deletes an extension version from the database and its files from the repository directory.
     * After the deletion, the extension index is updated.
     *
     * @param string $extensionKey : The extension key
     * @param string $version : Version number of the extension to delete
     *
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     * @throws \T3o\Ter\Exception\InternalServerErrorException
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     * @access protected
     */
    protected function deleteExtension_deleteFromDBAndRemoveFiles($extensionKey, $version)
    {
        if (!@is_dir($this->parentObj->repositoryDir)) {
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            throw new \T3o\Ter\Exception\InternalServerErrorException(
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                'Extension repository directory does not exist.',
                TX_TER_ERROR_GENERAL_EXTREPDIRDOESNTEXIST
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            );
        }

        $result = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
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            'uid',
            'tx_ter_extensions',
            'extensionkey=' . $GLOBALS['TYPO3_DB']->fullQuoteStr(
                $extensionKey,
                'tx_ter_extensions'
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            ) . ' AND version=' . $GLOBALS['TYPO3_DB']->fullQuoteStr(
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                $version,
                'tx_ter_extensions'
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            ) . ' AND pid=' . (int)$this->parentObj->extensionsPID
        );
        if (!$result) {
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            throw new \T3o\Ter\Exception\InternalServerErrorException(
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                'Database error while selecting extension for deletion. (extensionkey: ' . $extensionKey . ' version: ' . $version . ')',
                TX_TER_ERROR_GENERAL_DATABASEERROR
            );
        }
        $extensionRow = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result);
        if (!(int)$extensionRow['uid']) {
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            throw new \T3o\Ter\Exception\InternalServerErrorException(
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                'deleteExtension_deleteFromDBAndRemoveFiles: Extension does not exist. (extensionkey: ' . $extensionKey . ' version: ' . $version . ')',
                TX_TER_ERROR_DELETEEXTENSION_EXTENSIONDOESNTEXIST
            );
        }

        $result = $GLOBALS['TYPO3_DB']->exec_DELETEquery(
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            'tx_ter_extensiondetails',
            'extensionuid = ' . (int)$extensionRow['uid']
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        );
        if (!$result) {
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            throw new \T3o\Ter\Exception\InternalServerErrorException(
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                'Database error while deleting extension details for (extensionkey: ' . $extensionKey . ' uid: ' . $extensionRow['uid'] . ')',
                TX_TER_ERROR_GENERAL_DATABASEERROR
            );
        }
        $result = $GLOBALS['TYPO3_DB']->exec_DELETEquery(
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            'tx_ter_extensions',
            'extensionkey=' . $GLOBALS['TYPO3_DB']->fullQuoteStr(
                $extensionKey,
                'tx_ter_extensions'
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            ) . ' AND version=' . $GLOBALS['TYPO3_DB']->fullquoteStr($version, 'tx_ter_extensions')
        );
        if (!$result) {
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            throw new \T3o\Ter\Exception\InternalServerErrorException(
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                'Database error while deleting extension. (extensionkey: ' . $extensionKey . ' version: ' . $version . ')',
                TX_TER_ERROR_GENERAL_DATABASEERROR
            );
        }

        $firstLetter = strtolower(substr($extensionKey, 0, 1));
        $secondLetter = strtolower(substr($extensionKey, 1, 1));
        $fullPath = $this->parentObj->repositoryDir . $firstLetter . '/' . $secondLetter . '/';

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        list($majorVersion, $minorVersion, $devVersion) = GeneralUtility::intExplode('.', $version);
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        $fullPath .= strtolower($extensionKey) . '_' . $majorVersion . '.' . $minorVersion . '.' . $devVersion;

        $filesToDelete = [
            '.t3x',
            '.gif',
            '.png',
            '_Distribution.png',
            '_DistributionWelcome.png',
        ];
        foreach ($filesToDelete as $file) {
            if (file_exists($fullPath . $file)) {
                @unlink($fullPath . $file);
            }
        }
    }

    /**
     * Checks if the version of the uploaded extension already exists in repository
     *
     * @param $extensionInfoData
     *
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     * @return int|bool
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     */
    protected function checkUploadedExtensionVersionExistsInRepository($extensionInfoData)
    {
        return $GLOBALS['TYPO3_DB']->sql_num_rows(
            $GLOBALS['TYPO3_DB']->exec_SELECTquery(
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                'uid',
                'tx_ter_extensions',
                'extensionkey = ' . $GLOBALS['TYPO3_DB']->fullQuoteStr(
                    strtolower($extensionInfoData->extensionKey),
                    'tx_ter_extensions'
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                ) . ' AND version = ' . $GLOBALS['TYPO3_DB']->fullQuoteStr($extensionInfoData->version, 'tx_ter_extensions')
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            )
        );
    }

    /**
     * Checks if the extension has a dependency on one of the supported TYPO3 versions
     *
     * @param object $extensionInfoData Extension information as received from the SOAP interface
     *
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     * @return bool|int True if success, error code in case of failure
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     */
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    protected static function checkExtensionDependencyOnSupportedTypo3Version($extensionInfoData)
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    {
        $result = TX_TER_ERROR_UPLOADEXTENSION_TYPO3DEPENDENCYCHECKFAILED;
        $coreVersionData = GeneralUtility::getUrl(
            PATH_site . $GLOBALS['TYPO3_CONF_VARS']['BE']['fileadminDir'] . 'currentcoredata.json'
        );
        $currentCores = json_decode($coreVersionData, true);
        if ($currentCores !== null) {
            $result = TX_TER_ERROR_UPLOADEXTENSION_TYPO3DEPENDENCYINCORRECT;
            // Collect currently supported core versions
            $supportedCoreVersions = [];
            $oldestSupportedCoreVersion = '99.99.99';
            $newestCoreVersion = '0.0.0';
            foreach ($currentCores as $version => $coreInfo) {
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                if (is_array($coreInfo) && $coreInfo['active'] === true) {
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                    // Only use keys that represent a branch number
                    if (strpos($version, '.') && preg_match('/^(\d+)\.\d+$/', $version, $matches)) {
                        $latestBranchVersion = $coreInfo['latest'];
                    } else {
                        // Manage core version without branch (>= 7 LTS)
                        $latestBranchVersion = $version . '.99.999';
                    }

                    // Checks the latest version
                    if (!preg_match('/dev|alpha/', $latestBranchVersion)) {
                        $supportedCoreVersions[] = $latestBranchVersion;
                        if (version_compare($newestCoreVersion, $latestBranchVersion, '<')) {
                            $newestCoreVersion = $latestBranchVersion;
                        }
                    }

                    // Check the oldest active version
                    if (version_compare($version . '.0', $oldestSupportedCoreVersion, '<')) {
                        $oldestSupportedCoreVersion = $version;
                    }
                }
            }
            // clean newest core version
            preg_match('/^(\d+)\.(\d+)\.(\d+)/', $newestCoreVersion, $matches);
            $newestCoreVersion = $matches[1] . '.' . $matches[2] . '.999';

            // get first beta of oldest active version
            $oldestSupportedCoreVersionReleases = array_reverse($currentCores[$oldestSupportedCoreVersion]['releases']);
            foreach ($oldestSupportedCoreVersionReleases as $subVersion => $subVersionInfo) {
                if (!preg_match('/dev|alpha/', $subVersion)) {
                    $oldestSupportedCoreVersion = $subVersion;
                    break;
                }
            }

            // Compare currently supported core version with the dependency in the extension
            $typo3Range = '';
            if (is_array($extensionInfoData->technicalData->dependencies)) {
                foreach ($extensionInfoData->technicalData->dependencies as $dependency) {
                    if (is_object($dependency)) {
                        if ($dependency->kind == 'depends' && $dependency->extensionKey == 'typo3') {
                            $typo3Range = $dependency->versionRange;
                            break;
                        }
                    } else {
                        if ($dependency['kind'] == 'depends' && $dependency['extensionKey'] == 'typo3') {
                            $typo3Range = $dependency['versionRange'];
                            break;
                        }
                    }
                }
                list($lower, $upper) = GeneralUtility::trimExplode('-', $typo3Range);
                $lower = trim($lower);
                $upper = trim($upper);
                if (empty($lower) || empty($upper)) {
                    // Either part of the range is empty
                    $result = TX_TER_ERROR_UPLOADEXTENSION_TYPO3DEPENDENCYINCORRECT;
                } else {
                    if (!preg_match('/^\d+\.\d+\.\d+$/', $lower) || !preg_match('/^\d+\.\d+\.\d+$/', $upper)) {
                        // Either part is not a full version number
                        $result = TX_TER_ERROR_UPLOADEXTENSION_TYPO3DEPENDENCYINCORRECT;
                    } else {
                        if (version_compare($lower, '0.0.0', '<=') || version_compare($upper, '0.0.0', '<=')) {
                            // Either part is a zero version (n < n.0 < n.0.0)
                            $result = TX_TER_ERROR_UPLOADEXTENSION_TYPO3DEPENDENCYINCORRECT;
                        } else {
                            if (version_compare($upper, $oldestSupportedCoreVersion, '<')) {
                                // Upper limit is lower than oldest core version
                                $result = TX_TER_ERROR_UPLOADEXTENSION_TYPO3DEPENDENCYINCORRECT;
                            } else {
                                if (version_compare($upper, $newestCoreVersion, '>')) {
                                    // Upper limit is larger than newest core version
                                    $result = TX_TER_ERROR_UPLOADEXTENSION_TYPO3DEPENDENCYINCORRECT;
                                } else {
                                    if (version_compare($lower, $upper, '>')) {
                                        // Lower limit is higher than upper limit
                                        $result = TX_TER_ERROR_UPLOADEXTENSION_TYPO3DEPENDENCYINCORRECT;
                                    } else {
                                        $result = true;
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }

        return $result;
    }

    /*********************************************************
     *
     * checkExtensionKey helper functions
     *
     *********************************************************/

    /**
     * Checks if an extension key is formally valid
     *
     * @param    string $extensionKey : The extension key to check
     *
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     * @return    bool        TRUE if the extension key is valid
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     * @access    protected
     */
    protected function checkExtensionKey_extensionKeyIsFormallyValid($extensionKey)
    {
        $validKey = true;

        // check for forbidden characters
        if (preg_match('/[^a-z0-9_]/', $extensionKey)) {
            $validKey = false;
        }

        // check for forbidden start and end characters
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        if (preg_match('/^[0-9_]/', $extensionKey) || preg_match('/[_]$/', $extensionKey)) {
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            $validKey = false;
        }

        // Length
        $extensionKeyLength = strlen($extensionKey);
        if ($extensionKeyLength < 3 || $extensionKeyLength > 30) {
            $validKey = false;
        }

        // Bad prefixes:
        $badPrefixesArr = ['tx', 'user_', 'pages', 'tt_', 'sys_', 'ts_language_', 'csh_'];
        foreach ($badPrefixesArr as $prefix) {
            if (GeneralUtility::isFirstPartOfStr($extensionKey, $prefix)) {
                $validKey = false;
                break;
            }
        }

        return $validKey;
    }

    /*********************************************************
     *
     * registerExtensionKey helper functions
     *
     *********************************************************/

    /**
     * Writes extension key information into the database
     *
     * @param    object $accountData : A valid username and password
     * @param    object $extensionKeyData : The extension key and other information
     *
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     * @throws    \T3o\Ter\Exception\InternalServerErrorException
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     * @access    protected
     */
    protected function registerExtensionKey_writeExtensionKeyInfoToDB($accountData, $extensionKeyData)
    {
        $extensionKeysRow = [
            'pid' => $this->parentObj->extensionsPID,
            'tstamp' => time(),
            'crdate' => time(),
            'extensionkey' => $extensionKeyData->extensionKey,
            'title' => $GLOBALS['TSFE']->csConvObj->strtrunc('utf-8', $extensionKeyData->title, 50),
            'description' => $GLOBALS['TSFE']->csConvObj->strtrunc('utf-8', $extensionKeyData->description, 255),
            'ownerusername' => $accountData->username,
            'maxstoresize' => 0
        ];
        $result = $GLOBALS['TYPO3_DB']->exec_INSERTquery('tx_ter_extensionkeys', $extensionKeysRow);
        if (!$result) {
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            throw new \T3o\Ter\Exception\InternalServerErrorException(
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                'Database error while inserting extension key.',
                TX_TER_ERROR_REGISTEREXTENSIONKEY_DBERRORWHILEINSERTINGKEY
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            );
        }
    }

    /*********************************************************
     *
     * modifyExtensionKey helper functions
     *
     *********************************************************/

    /**
     * Writes modified extension key information into the database
     *
     * @param object $accountData : A valid username and password
     * @param object $modifyExtensionKeyData : The extension key field which shall be updated
     *
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     * @return int the result TER result code
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     * @throws \T3o\Ter\Exception\InternalServerErrorException
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     * @access protected
     */
    protected function modifyExtensionKey_writeModifiedKeyRecordIntoDB($accountData, $modifyExtensionKeyData)
    {
        $updateValues = [];

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        if (isset($modifyExtensionKeyData->ownerUsername)) {
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            $modifyExtensionKeyData->ownerUsername;
            $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
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                '*',
                'fe_users',
                'username=' . $GLOBALS['TYPO3_DB']->fullQuoteStr(
                    $modifyExtensionKeyData->ownerUsername,
                    'fe_users'
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                ) . $GLOBALS['TSFE']->sys_page->enableFields('fe_users')
            );
            if ($newOwnerUserRecordArr = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res)) {
                $updateValues['ownerusername'] = $newOwnerUserRecordArr['username'];
            } else {
                return TX_TER_ERROR_GENERAL_USERNOTFOUND;
            }
        }

        $res = $GLOBALS['TYPO3_DB']->exec_UPDATEquery(
            'tx_ter_extensionkeys',
            'extensionkey =' . $GLOBALS['TYPO3_DB']->fullQuoteStr($modifyExtensionKeyData->extensionKey, 'tx_ter_extensionkeys'),
            $updateValues
        );
        if (!$res) {
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            throw new \T3o\Ter\Exception\InternalServerErrorException(
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                'Database error while updating extension key.',
                TX_TER_ERROR_GENERAL_DATABASEERROR
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            );
        }

        return TX_TER_RESULT_GENERAL_OK;
    }

    /*********************************************************
     *
     * setReviewState helper functions
     *
     *********************************************************/

    /**
     * Writes modified review state into the database
     *
     * @param    object $setReviewStateData : Extension key, version number and the new state
     *
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     * @throws    \T3o\Ter\Exception\InternalServerErrorException
     * @throws    \T3o\Ter\Exception\NotFoundException
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     * @access    protected
     */
    protected function setReviewState_writeNewStateIntoDB($setReviewStateData)
    {
        $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
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            'uid',
            'tx_ter_extensions',
            'extensionkey =' . $GLOBALS['TYPO3_DB']->fullQuoteStr(
                $setReviewStateData->extensionKey,
                'tx_ter_extensions'
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            ) . ' AND ' . 'version =' . $GLOBALS['TYPO3_DB']->fullQuoteStr($setReviewStateData->version, 'tx_ter_extensions')
        );
        if (!$res) {
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            throw new \T3o\Ter\Exception\InternalServerErrorException(
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                'Database error while searching for extension record.',
                TX_TER_ERROR_GENERAL_DATABASEERROR
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            );
        }
        if ($GLOBALS['TYPO3_DB']->sql_num_rows($res) != 1) {
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            throw new \T3o\Ter\Exception\NotFoundException(
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                'Extension version does not exist.',
                TX_TER_ERROR_SETREVIEWSTATE_EXTENSIONVERSIONDOESNOTEXIST
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            );
        }

        $res = $GLOBALS['TYPO3_DB']->exec_UPDATEquery(
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            'tx_ter_extensions',
            'extensionkey =' . $GLOBALS['TYPO3_DB']->fullQuoteStr(
                $setReviewStateData->extensionKey,
                'tx_ter_extensions'
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            ) . ' AND ' . 'version =' . $GLOBALS['TYPO3_DB']->fullQuoteStr($setReviewStateData->version, 'tx_ter_extensions'),
            ['reviewstate' => (int)$setReviewStateData->reviewState]
        );
        if (!$res) {
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            throw new \T3o\Ter\Exception\InternalServerErrorException(
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                'Database error while updating extension review state.',
                TX_TER_ERROR_GENERAL_DATABASEERROR
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            );
        }
    }

    /*********************************************************
     *
     * increaseExtensionDownloadCounter helper functions
     *
     *********************************************************/

    /**
     * Reads, increases and writes the download counter of an extension version
     * into the database.
     *
     * @param    object $extensionVersionDataAndIncrementor : Extension key and version number and the download count incrementor
     *
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     * @throws    \T3o\Ter\Exception\InternalServerErrorException
     * @throws    \T3o\Ter\Exception\NotFoundException
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     * @access    protected
     */
    protected function increaseExtensionDownloadCounter_increaseCounterInDB($extensionVersionDataAndIncrementor)
    {
        $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
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            'uid, downloadcounter',
            'tx_ter_extensions',
            'extensionkey =' . $GLOBALS['TYPO3_DB']->fullQuoteStr(
                $extensionVersionDataAndIncrementor->extensionKey,
                'tx_ter_extensions'
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            ) . ' AND ' . 'version =' . $GLOBALS['TYPO3_DB']->fullQuoteStr(
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                $extensionVersionDataAndIncrementor->version,
                'tx_ter_extensions'
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            )
        );
        if (!$res) {
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            throw new \T3o\Ter\Exception\InternalServerErrorException(
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                'Database error while searching for extension record.',
                TX_TER_ERROR_GENERAL_DATABASEERROR
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            );
        }
        if ($GLOBALS['TYPO3_DB']->sql_num_rows($res) != 1) {
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            throw new \T3o\Ter\Exception\NotFoundException(
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                'Extension version does not exist.',
                TX_TER_ERROR_INCREASEEXTENSIONDOWNLOADCOUNTER_EXTENSIONVERSIONDOESNOTEXIST
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            );
        }

        $currentRow = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res);
        $incrementor = (int)$extensionVersionDataAndIncrementor->downloadCountIncrementor;
        if ($incrementor !== abs($incrementor)) {
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            throw new \T3o\Ter\Exception\NotFoundException(
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                'The incrementor must be a positive integer value.',
                TX_TER_ERROR_INCREASEEXTENSIONDOWNLOADCOUNTER_INCREMENTORNOTPOSITIVEINTEGER
            );
        }
        $newCounter = $currentRow['downloadcounter'] + $incrementor;

        $res = $GLOBALS['TYPO3_DB']->exec_UPDATEquery(
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            'tx_ter_extensions',
            'uid=' . (int)$currentRow['uid'],
            ['downloadcounter' => $newCounter]
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        );
        if (!$res) {
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            throw new \T3o\Ter\Exception\InternalServerErrorException(
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                'Database error while updating extension download counter.',
                TX_TER_ERROR_GENERAL_DATABASEERROR
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            );
        }

        $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
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            'uid, downloadcounter',
            'tx_ter_extensionkeys',
            'extensionkey =' . $GLOBALS['TYPO3_DB']->fullQuoteStr(
                $extensionVersionDataAndIncrementor->extensionKey,
                'tx_ter_extensions'
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            )
        );
        if (!$res) {
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            throw new \T3o\Ter\Exception\InternalServerErrorException(
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                'Database error while searching for extension key record.',
                TX_TER_ERROR_GENERAL_DATABASEERROR
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            );
        }
        if ($GLOBALS['TYPO3_DB']->sql_num_rows($res) != 1) {
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            throw new \T3o\Ter\Exception\NotFoundException(
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                'Extension key does not exist.',
                TX_TER_ERROR_INCREASEEXTENSIONDOWNLOADCOUNTER_EXTENSIONKEYDOESNOTEXIST
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            );
        }

        $currentRow = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res);
        $newCounter = $currentRow['downloadcounter'] + $incrementor;

        $res = $GLOBALS['TYPO3_DB']->exec_UPDATEquery(
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            'tx_ter_extensionkeys',
            'uid=' . (int)$currentRow['uid'],
            ['downloadcounter' => $newCounter]
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        );
        if (!$res) {
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            throw new \T3o\Ter\Exception\InternalServerErrorException(
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                'Database error while updating extension total download counter.',
                TX_TER_ERROR_GENERAL_DATABASEERROR
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            );
        }
    }

    /**
     * Update an existing or create a new database record
     *
     * @param string $table Table name
     * @param array $recordData Record key <-> value pairs
     * @param string $where Where statement
     *
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     * @return int UID of the new or updated record
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     */
    public function updateOrInsertRecord($table, array $recordData, $where = '')
    {
        if (empty($table) || empty($recordData)) {
            return false;
        }

        // Load environment
        if (empty($this->tce)) {
            $this->helperObj->loadBackendUser(1, '_ter_', true);
            $this->helperObj->loadLang();
            $this->loadTceForm();
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            // Due to the lack of existence of this needed array we define it here to be able to write
            $GLOBALS['PAGES_TYPES']['default']['allowedTables'] = '*';
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        }

        // Check if the record already exists and get UID if not given
        $update = false;
        if (!empty($where)) {
            $result = $GLOBALS['TYPO3_DB']->exec_SELECTgetSingleRow('uid', $table, $where);
            if (!empty($result['uid'])) {
                $update = true;
                if (empty($recordData['uid'])) {
                    $recordData['uid'] = $result['uid'];
                }
            }
        }

        // Get key name
        $key = ($update ? (int)$recordData['uid'] : 'NEW' . uniqid());
        unset($recordData['uid']);

        // Data map for TCEMAIN record
        $data = [
            $table => [
                $key => $recordData,
            ],
        ];

        // Finally update or insert record
        $this->tce->datamap = $data;
        $this->tce->process_datamap();

        // Remap NEW key to real UID
        if (!empty($this->tce->substNEWwithIDs[$key])) {
            $key = $this->tce->substNEWwithIDs[$key];
        }

        return (int)$key;
    }

    /**
     * Load an instance of the TCEMAIN object
     */
    public function loadTceForm()
    {
        $this->tce = GeneralUtility::makeInstance(\TYPO3\CMS\Core\DataHandling\DataHandler::class);
        $this->tce->stripslashes_values = 0;
        $this->tce->workspace = 0;
        $this->tce->bypassWorkspaceRestrictions = true;
        $this->tce->start([], []);
    }

    /**
     * Saves the images that are displayed in the TER listing and detail views
     *
     * @param array $preparedFilesDataArr The array with file names and contents
     * @param string $imageBaseName The prefix for each image, is also the name for the ext_icon file
     * @param string $fullPath The full path to the image folder
     *
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     */
    protected function saveImages(&$preparedFilesDataArr, $imageBaseName, $fullPath)
    {
        // Create a list of allowed images; resulting file names are given
        // as values ($imageBaseName is prepended later on)
        $potentialImagePaths = [];
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        // Extension icon (either SVG, PNG or GIF)
        $potentialImagePaths['ext_icon.svg'] = '.svg';
        $potentialImagePaths['ext_icon.png'] = '.png';
        $potentialImagePaths['ext_icon.gif'] = '.gif';
        $potentialImagePaths['Resources/Public/Icons/Extension.svg'] = '.svg';
        $potentialImagePaths['Resources/Public/Icons/Extension.png'] = '.png';
        $potentialImagePaths['Resources/Public/Icons/Extension.gif'] = '.gif';
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        // Small preview image 220x150
        $potentialImagePaths['Resources/Public/Images/Distribution.png'] = '_Distribution.png';
        // Big welcome image 300x400
        $potentialImagePaths['Resources/Public/Images/DistributionWelcome.png'] = '_DistributionWelcome.png';

        $foundImages = array_intersect_key($preparedFilesDataArr, $potentialImagePaths);
        foreach ($foundImages as $image) {
            $imageName = $potentialImagePaths[$image['name']];
            $imageData = $image['content'];
            $imagePath = $imageBaseName . $imageName;
            if (strlen($imageData)) {
                $fh = @fopen($fullPath . $imagePath, 'wb');
                if (!$fh) {
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                    throw new \T3o\Ter\Exception\InternalServerErrorException(
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                        'Write error while writing file: ' . $fullPath . $imagePath,
                        TX_TER_ERROR_UPLOADEXTENSION_WRITEERRORWHILEWRITINGFILES
                    );
                }
                fwrite($fh, $imageData);
                fclose($fh);
            }
        }
    }
}