nextcloud/apps/files/ajax/upload.php

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<?php
// Init owncloud
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// Firefox and Konqueror tries to download application/json for me. --Arthur
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OCP\JSON::setContentTypeHeader('text/plain');
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OCP\JSON::checkLoggedIn();
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OCP\JSON::callCheck();
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if (!isset($_FILES['files'])) {
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OCP\JSON::error(array("data" => array( "message" => "No file was uploaded. Unknown error" )));
exit();
}
foreach ($_FILES['files']['error'] as $error) {
if ($error != 0) {
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$l=OC_L10N::get('files');
$errors = array(
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UPLOAD_ERR_OK=>$l->t("There is no error, the file uploaded with success"),
UPLOAD_ERR_INI_SIZE=>$l->t("The uploaded file exceeds the upload_max_filesize directive in php.ini").ini_get('upload_max_filesize'),
UPLOAD_ERR_FORM_SIZE=>$l->t("The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form"),
UPLOAD_ERR_PARTIAL=>$l->t("The uploaded file was only partially uploaded"),
UPLOAD_ERR_NO_FILE=>$l->t("No file was uploaded"),
UPLOAD_ERR_NO_TMP_DIR=>$l->t("Missing a temporary folder"),
UPLOAD_ERR_CANT_WRITE=>$l->t('Failed to write to disk'),
);
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OCP\JSON::error(array("data" => array( "message" => $errors[$error] )));
exit();
}
}
$files=$_FILES['files'];
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$dir = $_POST['dir'];
$error='';
$totalSize=0;
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foreach($files['size'] as $size) {
$totalSize+=$size;
}
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if($totalSize>OC_Filesystem::free_space('/')) {
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OCP\JSON::error(array("data" => array( "message" => "Not enough space available" )));
exit();
}
$result=array();
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if(strpos($dir, '..') === false) {
$fileCount=count($files['name']);
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for($i=0;$i<$fileCount;$i++) {
$target = OCP\Files::buildNotExistingFileName(stripslashes($dir), $files['name'][$i]);
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if(is_uploaded_file($files['tmp_name'][$i]) and OC_Filesystem::fromTmpFile($files['tmp_name'][$i], $target)) {
$meta = OC_FileCache::get($target);
$result[]=array( "status" => "success", 'mime'=>$meta['mimetype'],'size'=>$meta['size'],'name'=>basename($target));
}
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}
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OCP\JSON::encodedPrint($result);
exit();
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} else {
$error='invalid dir';
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}
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OCP\JSON::error(array('data' => array('error' => $error, "file" => $fileName)));