47 lines
1017 B
PHP
47 lines
1017 B
PHP
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<?php
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class DownloadHandler
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{
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public static function doDownload() {
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if (isset($_GET["token"])) {
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$token = $_GET["token"];
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} else {
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return false;
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}
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if (isset($_GET["filename"])) {
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$filename = $_GET["filename"];
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} else {
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return false;
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}
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// validate token
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if (!ctype_alnum($token)) { // token is a md5 hash
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return false;
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}
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$file = PLUGIN_CONTACTIMPORTER_TMP_UPLOAD . "vcf_" . $token . ".vcf";
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if(!file_exists($file)) { // invalid token
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return false;
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}
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// set headers here
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header('Content-Disposition: attachment; filename="' . $filename . '"');
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// no caching
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header('Expires: 0'); // set expiration time
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header('Content-Description: File Transfer');
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header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
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header('Content-Length: ' . filesize($file));
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header('Content-Type: application/octet-stream');
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header('Pragma: public');
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flush();
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// print the downloaded file
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readfile($file);
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ignore_user_abort(true);
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unlink($file);
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}
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}
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