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@ -41,15 +41,29 @@ if (!is_array($files_list)) {
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$files_list = [$files];
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}
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/**
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* @psalm-taint-escape cookie
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*/
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function cleanCookieInput(string $value): string {
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if (strlen($value) > 32) {
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return '';
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}
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if (preg_match('!^[a-zA-Z0-9]+$!', $_GET['downloadStartSecret']) !== 1) {
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return '';
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}
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return $value;
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}
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/**
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* this sets a cookie to be able to recognize the start of the download
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* the content must not be longer than 32 characters and must only contain
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* alphanumeric characters
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*/
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if (isset($_GET['downloadStartSecret'])
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&& !isset($_GET['downloadStartSecret'][32])
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&& preg_match('!^[a-zA-Z0-9]+$!', $_GET['downloadStartSecret']) === 1) {
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setcookie('ocDownloadStarted', $_GET['downloadStartSecret'], time() + 20, '/');
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if (isset($_GET['downloadStartSecret'])) {
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$value = cleanCookieInput($_GET['downloadStartSecret']);
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if ($value !== '') {
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setcookie('ocDownloadStarted', $value, time() + 20, '/');
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}
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}
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$server_params = [ 'head' => \OC::$server->getRequest()->getMethod() === 'HEAD' ];
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