402 lines
20 KiB
PHP
402 lines
20 KiB
PHP
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<?php
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/**
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* This file is a part of the phpMussel package.
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* Homepage: https://phpmussel.github.io/
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*
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* PHPMUSSEL COPYRIGHT 2013 AND BEYOND BY THE PHPMUSSEL TEAM.
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*
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* Authors:
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* @see PEOPLE.md
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*
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* License: GNU/GPLv2
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* @see LICENSE.txt
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*
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* This file: Upload handler (last modified: 2017.10.26).
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*/
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/** Prevents execution from outside of phpMussel. */
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if (!defined('phpMussel')) {
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die('[phpMussel] This should not be accessed directly.');
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}
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/** Sets default error handler for the upload handler. */
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set_error_handler($phpMussel['ErrorHandler_1']);
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/** Create an array for our working data. */
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$phpMussel['upload'] = [];
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/**
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* We need to count the number of elements contained by the $_FILES array, to
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* know if there are any file uploads to be scanned during execution of the
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* script.
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*/
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$phpMussel['upload']['count'] = empty($_FILES) ? 0 : count($_FILES);
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/** Only continue if there are uploads to deal with. */
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if ($phpMussel['upload']['count'] > 0 && !$phpMussel['Config']['general']['maintenance_mode']) {
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/**
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* Whenever something is detected in a file being scanned, a human-readable
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* description of what has been detected is appended to
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* $phpMussel['whyflagged']; This variable contains the "Detected ... !"
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* message you see on the "Upload Denied!" page generated whenever a file
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* upload has been blocked.
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*
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* The $phpMussel['killdata'] variable contains a hash reference to every
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* file upload blocked and to every file where something has been detected
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* in that file, in the form of "FILE-MD5-HASH:FILESIZE:FILENAME".
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*
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* If the file being scanned happens to be a PE file, in addition to the
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* information appended to $phpMussel['whyflagged'] and
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* $phpMussel['killdata'], reconstructed references to the PE sections of
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* that PE file will be appended to the $phpMussel['PEData'] variable.
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*
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* If logging is enabled, the information contained by these three
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* variables will all be logged as per the specified by the logging-related
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* directives of the phpMussel configuration file.
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*/
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$phpMussel['whyflagged'] = $phpMussel['killdata'] = $phpMussel['PEData'] = '';
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/** Create an array for our hash cache data. */
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$phpMussel['HashCache'] = [];
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/** Fetch the hash cache (a record of recently scanned files). */
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$phpMussel['HashCache']['Data'] = (
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$phpMussel['upload']['count'] > 0 && $phpMussel['Config']['general']['scan_cache_expiry'] > 0
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) ? $phpMussel['FetchCache']('HashCache') : '';
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/** Process the hash cache. */
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if (!empty($phpMussel['HashCache']['Data'])) {
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$phpMussel['HashCache']['Data'] = explode(';', $phpMussel['HashCache']['Data']);
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$phpMussel['HashCache']['Build'] = [];
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foreach ($phpMussel['HashCache']['Data'] as &$phpMussel['HashCache']['This']) {
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if (strpos($phpMussel['HashCache']['This'], ':') !== false) {
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$phpMussel['HashCache']['This'] = explode(':', $phpMussel['HashCache']['This'], 4);
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if ($phpMussel['Time'] <= $phpMussel['HashCache']['This'][1]) {
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$phpMussel['HashCache']['Build'][$phpMussel['HashCache']['This'][0]] =
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$phpMussel['HashCache']['This'];
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}
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}
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}
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$phpMussel['HashCache']['Data'] = $phpMussel['HashCache']['Build'];
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unset($phpMussel['HashCache']['This'], $phpMussel['HashCache']['Build']);
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}
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/** Reset the $_FILES caret. */
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reset($_FILES);
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/** File upload scan start time. */
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$phpMussel['memCache']['start_time'] = time() + ($phpMussel['Config']['general']['timeOffset'] * 60);
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/** Create an array for normalising the $_FILES data. */
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$phpMussel['upload']['FilesData'] = [];
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/** Generate "HONEYPOT EVENT" header (if "honeypot_mode" is enabled). */
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if ($phpMussel['Config']['general']['honeypot_mode']) {
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$phpMussel['memCache']['Handle'] = ['qdata' =>
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"== HONEYPOT EVENT ==\nDATE: " . $phpMussel['TimeFormat'](
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$phpMussel['memCache']['start_time'],
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$phpMussel['Config']['general']['timeFormat']
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) . "\nIP ADDRESS: " . $_SERVER[$phpMussel['Config']['general']['ipaddr']] . "\n"
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];
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}
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for (
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$phpMussel['upload']['FilesData']['i'] = 0;
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$phpMussel['upload']['FilesData']['i'] < $phpMussel['upload']['count'];
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$phpMussel['upload']['FilesData']['i']++
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) {
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$phpMussel['upload']['FilesData']['k'] = key($_FILES);
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if (!isset($_FILES[$phpMussel['upload']['FilesData']['k']]['error'])) {
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next($_FILES);
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continue;
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}
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/** Begin normalising the $_FILES data to the "FilesData" array. */
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if (!is_array($_FILES[$phpMussel['upload']['FilesData']['k']]['error'])) {
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$phpMussel['upload']['FilesData']['FileSet'] = [
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'name' => [$_FILES[$phpMussel['upload']['FilesData']['k']]['name']],
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'type' => [$_FILES[$phpMussel['upload']['FilesData']['k']]['type']],
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'tmp_name' => [$_FILES[$phpMussel['upload']['FilesData']['k']]['tmp_name']],
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'error' => [$_FILES[$phpMussel['upload']['FilesData']['k']]['error']],
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'size' => [$_FILES[$phpMussel['upload']['FilesData']['k']]['size']]
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];
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} else {
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$phpMussel['upload']['FilesData']['FileSet'] =
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$_FILES[$phpMussel['upload']['FilesData']['k']];
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}
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$phpMussel['upload']['FilesData']['FileSet']['c'] = count(
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$phpMussel['upload']['FilesData']['FileSet']['error']
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);
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for (
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$phpMussel['upload']['FilesData']['FileSet']['i'] = 0, $phpMussel['SkipSerial'] = true;
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$phpMussel['upload']['FilesData']['FileSet']['i'] < $phpMussel['upload']['FilesData']['FileSet']['c'];
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$phpMussel['upload']['FilesData']['FileSet']['i']++
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) {
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if (!isset($phpMussel['upload']['FilesData']['FileSet']['name'][$phpMussel['upload']['FilesData']['FileSet']['i']])) {
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$phpMussel['upload']['FilesData']['FileSet']['name'][$phpMussel['upload']['FilesData']['FileSet']['i']] = '';
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}
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if (!isset($phpMussel['upload']['FilesData']['FileSet']['type'][$phpMussel['upload']['FilesData']['FileSet']['i']])) {
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$phpMussel['upload']['FilesData']['FileSet']['type'][$phpMussel['upload']['FilesData']['FileSet']['i']] = '';
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}
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if (!isset($phpMussel['upload']['FilesData']['FileSet']['tmp_name'][$phpMussel['upload']['FilesData']['FileSet']['i']])) {
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$phpMussel['upload']['FilesData']['FileSet']['tmp_name'][$phpMussel['upload']['FilesData']['FileSet']['i']] = '';
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}
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if (!isset($phpMussel['upload']['FilesData']['FileSet']['error'][$phpMussel['upload']['FilesData']['FileSet']['i']])) {
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$phpMussel['upload']['FilesData']['FileSet']['error'][$phpMussel['upload']['FilesData']['FileSet']['i']] = 0;
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}
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if (!isset($phpMussel['upload']['FilesData']['FileSet']['size'][$phpMussel['upload']['FilesData']['FileSet']['i']])) {
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$phpMussel['upload']['FilesData']['FileSet']['size'][$phpMussel['upload']['FilesData']['FileSet']['i']] = 0;
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}
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unset($phpMussel['upload']['ThisError']);
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$phpMussel['upload']['ThisError'] = &$phpMussel['upload']['FilesData']['FileSet']['error'][$phpMussel['upload']['FilesData']['FileSet']['i']];
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/** Handle upload errors. */
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if ($phpMussel['upload']['ThisError'] > 0) {
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if (
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$phpMussel['Config']['compatibility']['ignore_upload_errors'] ||
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$phpMussel['upload']['ThisError'] > 8 ||
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$phpMussel['upload']['ThisError'] === 5
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) {
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continue;
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}
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$phpMussel['killdata'] .= sprintf(
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"---------UPLOAD-ERROR-%d---------:%d:%s\n",
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$phpMussel['upload']['ThisError'],
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$phpMussel['upload']['FilesData']['FileSet']['size'][$phpMussel['upload']['FilesData']['FileSet']['i']],
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$phpMussel['upload']['FilesData']['FileSet']['name'][$phpMussel['upload']['FilesData']['FileSet']['i']]
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);
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$phpMussel['whyflagged'] .= (
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$phpMussel['upload']['ThisError'] === 3 || $phpMussel['upload']['ThisError'] === 4
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) ? $phpMussel['lang']['upload_error_34'] : $phpMussel['lang']['upload_error_' . $phpMussel['upload']['ThisError']];
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if (
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($phpMussel['upload']['ThisError'] === 1 || $phpMussel['upload']['ThisError'] === 2) &&
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$phpMussel['Config']['general']['delete_on_sight'] &&
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is_uploaded_file($phpMussel['upload']['FilesData']['FileSet']['tmp_name'][$phpMussel['upload']['FilesData']['FileSet']['i']]) &&
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is_readable($phpMussel['upload']['FilesData']['FileSet']['tmp_name'][$phpMussel['upload']['FilesData']['FileSet']['i']])
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) {
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unlink($phpMussel['upload']['FilesData']['FileSet']['tmp_name'][$phpMussel['upload']['FilesData']['FileSet']['i']]);
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}
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continue;
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}
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/** Protection against upload spoofing. */
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if (!is_uploaded_file($phpMussel['upload']['FilesData']['FileSet']['tmp_name'][$phpMussel['upload']['FilesData']['FileSet']['i']])) {
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$phpMussel['killdata'] .= sprintf(
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"UNAUTHORISED-FILE-UPLOAD-NO-HASH:%d:%s\n",
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$phpMussel['upload']['FilesData']['FileSet']['size'][$phpMussel['upload']['FilesData']['FileSet']['i']],
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$phpMussel['upload']['FilesData']['FileSet']['name'][$phpMussel['upload']['FilesData']['FileSet']['i']]
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);
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$phpMussel['whyflagged'] .= sprintf(
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'%s (%s)%s',
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$phpMussel['lang']['scan_unauthorised_upload'],
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$phpMussel['upload']['FilesData']['FileSet']['name'][$phpMussel['upload']['FilesData']['FileSet']['i']],
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$phpMussel['lang']['_exclamation']
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);
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} elseif (
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!$phpMussel['upload']['FilesData']['FileSet']['name'][$phpMussel['upload']['FilesData']['FileSet']['i']] ||
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!$phpMussel['upload']['FilesData']['FileSet']['tmp_name'][$phpMussel['upload']['FilesData']['FileSet']['i']]
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) {
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$phpMussel['killdata'] .= "-UNAUTHORISED-UPLOAD-MISCONFIG-:?:?\n";
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$phpMussel['whyflagged'] .= $phpMussel['lang']['scan_unauthorised_upload_or_misconfig'];
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} else {
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/** Honeypot code. */
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if (
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$phpMussel['Config']['general']['honeypot_mode'] &&
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$phpMussel['Config']['general']['quarantine_key']
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) {
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$phpMussel['ReadFile-For-Honeypot'](
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$phpMussel['memCache']['Handle'],
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$phpMussel['upload']['FilesData']['FileSet']['tmp_name'][$phpMussel['upload']['FilesData']['FileSet']['i']]
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);
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}
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/** Process this block if the number of files being uploaded exceeds "max_uploads". */
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if (
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$phpMussel['upload']['count'] > $phpMussel['Config']['files']['max_uploads'] &&
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$phpMussel['Config']['files']['max_uploads'] >= 1
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) {
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$phpMussel['KillAndUnlink']();
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continue;
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}
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/** Used for serialised logging. */
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if ($phpMussel['upload']['FilesData']['FileSet']['i'] === ($phpMussel['upload']['FilesData']['FileSet']['c'] - 1)) {
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unset($phpMussel['SkipSerial']);
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}
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/** Execute the scan! */
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try {
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$r = $phpMussel['Scan'](
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$phpMussel['upload']['FilesData']['FileSet']['tmp_name'][$phpMussel['upload']['FilesData']['FileSet']['i']],
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true,
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true,
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0,
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$phpMussel['upload']['FilesData']['FileSet']['name'][$phpMussel['upload']['FilesData']['FileSet']['i']]
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);
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} catch (\Exception $e) {
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die($e->getMessage());
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}
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}
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}
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next($_FILES);
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}
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/** Honeypot code. */
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if (
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$phpMussel['Config']['general']['honeypot_mode'] &&
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$phpMussel['Config']['general']['scan_kills'] &&
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is_array($phpMussel['memCache']['Handle'])
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) {
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$phpMussel['memCache']['Handle']['File'] = $phpMussel['TimeFormat']($phpMussel['Time'], $phpMussel['Config']['general']['scan_kills']);
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if (!file_exists($phpMussel['Vault'] . $phpMussel['memCache']['Handle']['File'])) {
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$phpMussel['memCache']['Handle']['qdata'] =
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$phpMussel['safety'] . "\n\n" . $phpMussel['memCache']['Handle']['qdata'];
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}
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$phpMussel['memCache']['Handle']['Stream'] =
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fopen($phpMussel['Vault'] . $phpMussel['memCache']['Handle']['File'], 'a');
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fwrite($phpMussel['memCache']['Handle']['Stream'], $phpMussel['memCache']['Handle']['qdata']);
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fclose($phpMussel['memCache']['Handle']['Stream']);
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$phpMussel['memCache']['Handle'] = '';
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}
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/** Update the hash cache. */
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if ($phpMussel['Config']['general']['scan_cache_expiry'] > 0 && !empty($phpMussel['HashCache']['Data']) && is_array($phpMussel['HashCache']['Data'])) {
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$phpMussel['HashCache']['Data'] = array_map(function ($Item) {
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return is_array($Item) ? implode(':', $Item) . ';' : $Item;
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}, $phpMussel['HashCache']['Data']);
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$phpMussel['HashCache']['Data'] = implode('', $phpMussel['HashCache']['Data']);
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$phpMussel['HashCache']['Data'] = $phpMussel['SaveCache'](
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'HashCache',
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$phpMussel['Time'] + $phpMussel['Config']['general']['scan_cache_expiry'],
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$phpMussel['HashCache']['Data']
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);
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unset($phpMussel['HashCache']);
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}
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/** File upload scan finish time. */
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$phpMussel['memCache']['end_time'] = time() + ($phpMussel['Config']['general']['timeOffset'] * 60);
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/** Trim trailing whitespace. */
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$phpMussel['whyflagged'] = trim($phpMussel['whyflagged']);
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/** Reset the $_FILES caret. */
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reset($_FILES);
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/** Begin processing file upload detections. */
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if ($phpMussel['whyflagged']) {
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/** A fix for correctly displaying LTR/RTL text. */
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if (empty($phpMussel['lang']['textDir']) || $phpMussel['lang']['textDir'] !== 'rtl') {
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$phpMussel['lang']['textDir'] = 'ltr';
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}
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/** Merging parsable variables for the template data. */
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$phpMussel['TemplateData'] = $phpMussel['lang'] + $phpMussel['Config']['template_data'];
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$phpMussel['TemplateData']['detected'] = $phpMussel['whyflagged'];
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$phpMussel['TemplateData']['phpmusselversion'] = $phpMussel['ScriptIdent'];
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$phpMussel['TemplateData']['favicon'] = $phpMussel['favicon'];
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$phpMussel['TemplateData']['xmlLang'] = $phpMussel['Config']['general']['lang'];
|
||
|
|
|
||
|
|
/** Determine which template file to use, if this hasn't already been determined. */
|
||
|
|
if (!isset($phpMussel['memCache']['template_file'])) {
|
||
|
|
$phpMussel['memCache']['template_file'] = !$phpMussel['Config']['template_data']['css_url'] ?
|
||
|
|
'template_' . $phpMussel['Config']['template_data']['theme'] . '.html' : 'template_custom.html';
|
||
|
|
}
|
||
|
|
|
||
|
|
/** Fallback for themes without default template files. */
|
||
|
|
if (
|
||
|
|
$phpMussel['Config']['template_data']['theme'] !== 'default' &&
|
||
|
|
!$phpMussel['Config']['template_data']['css_url'] &&
|
||
|
|
!file_exists($phpMussel['Vault'] . $phpMussel['memCache']['template_file'])
|
||
|
|
) {
|
||
|
|
$phpMussel['memCache']['template_file'] = 'template_default.html';
|
||
|
|
}
|
||
|
|
|
||
|
|
/** Log "scan_kills" data. */
|
||
|
|
if ($phpMussel['Config']['general']['scan_kills'] && !empty($phpMussel['killdata'])) {
|
||
|
|
$phpMussel['memCache']['Handle'] = [
|
||
|
|
'File' => $phpMussel['TimeFormat']($phpMussel['Time'], $phpMussel['Config']['general']['scan_kills'])
|
||
|
|
];
|
||
|
|
$phpMussel['memCache']['Handle']['WriteMode'] = (
|
||
|
|
!file_exists($phpMussel['Vault'] . $phpMussel['memCache']['Handle']['File']) || (
|
||
|
|
$phpMussel['Config']['general']['truncate'] > 0 &&
|
||
|
|
filesize($phpMussel['Vault'] . $phpMussel['memCache']['Handle']['File']) >= $phpMussel['ReadBytes']($phpMussel['Config']['general']['truncate'])
|
||
|
|
)
|
||
|
|
) ? 'w' : 'a';
|
||
|
|
$phpMussel['memCache']['Handle']['Data'] =
|
||
|
|
!file_exists($phpMussel['Vault'] . $phpMussel['memCache']['Handle']['File']) ? $phpMussel['safety'] . "\n\n" : '';
|
||
|
|
$phpMussel['memCache']['Handle']['Data'] .=
|
||
|
|
'DATE: ' . $phpMussel['TimeFormat']($phpMussel['Time'], $phpMussel['Config']['general']['timeFormat']) .
|
||
|
|
"\nIP ADDRESS: " . $_SERVER[$phpMussel['Config']['general']['ipaddr']] .
|
||
|
|
"\n== SCAN RESULTS / WHY FLAGGED ==\n" .
|
||
|
|
$phpMussel['whyflagged'] .
|
||
|
|
"\n== MD5 SIGNATURE RECONSTRUCTION (FILE-HASH:FILE-SIZE:FILE-NAME) ==\n" .
|
||
|
|
$phpMussel['killdata'];
|
||
|
|
if ($phpMussel['PEData']) {
|
||
|
|
$phpMussel['memCache']['Handle']['Data'] .=
|
||
|
|
"== PE SECTIONAL SIGNATURES RECONSTRUCTION (SECTION-SIZE:SECTION-HASH:FILE-NAME--SECTION-NAME) ==\n" .
|
||
|
|
$phpMussel['PEData'];
|
||
|
|
}
|
||
|
|
$phpMussel['memCache']['Handle']['Data'] .= "\n";
|
||
|
|
$phpMussel['memCache']['Handle']['Stream'] =
|
||
|
|
fopen($phpMussel['Vault'] . $phpMussel['memCache']['Handle']['File'], $phpMussel['memCache']['Handle']['WriteMode']);
|
||
|
|
fwrite($phpMussel['memCache']['Handle']['Stream'], $phpMussel['memCache']['Handle']['Data']);
|
||
|
|
fclose($phpMussel['memCache']['Handle']['Stream']);
|
||
|
|
$phpMussel['memCache']['Handle'] = '';
|
||
|
|
}
|
||
|
|
|
||
|
|
/** Fallback to use if the HTML template file is missing. */
|
||
|
|
if (!file_exists($phpMussel['Vault'] . $phpMussel['memCache']['template_file'])) {
|
||
|
|
header('Content-Type: text/plain');
|
||
|
|
die('[phpMussel] ' . $phpMussel['lang']['denied'] . ' ' . $phpMussel['TemplateData']['detected']);
|
||
|
|
}
|
||
|
|
|
||
|
|
/** Send a 403 FORBIDDEN status code to the client if "forbid_on_block" is enabled. */
|
||
|
|
if ($phpMussel['Config']['general']['forbid_on_block']) {
|
||
|
|
header('HTTP/1.0 403 Forbidden');
|
||
|
|
header('HTTP/1.1 403 Forbidden');
|
||
|
|
header('Status: 403 Forbidden');
|
||
|
|
}
|
||
|
|
|
||
|
|
/** Generate HTML output. */
|
||
|
|
$phpMussel['HTML'] = $phpMussel['ParseVars'](
|
||
|
|
$phpMussel['TemplateData'],
|
||
|
|
$phpMussel['ReadFile']($phpMussel['Vault'] . $phpMussel['memCache']['template_file'], 0, true)
|
||
|
|
);
|
||
|
|
|
||
|
|
/** Plugin hook: "before_html_out". */
|
||
|
|
$phpMussel['Execute_Hook']('before_html_out');
|
||
|
|
|
||
|
|
/** Handle webfonts. */
|
||
|
|
if (empty($phpMussel['Config']['general']['disable_webfonts'])) {
|
||
|
|
$phpMussel['HTML'] = str_replace(['<!-- WebFont Begin -->', '<!-- WebFont End -->'], '', $phpMussel['HTML']);
|
||
|
|
} else {
|
||
|
|
$phpMussel['WebFontPos'] = [
|
||
|
|
'Begin' => strpos($phpMussel['HTML'], '<!-- WebFont Begin -->'),
|
||
|
|
'End' => strpos($phpMussel['HTML'], '<!-- WebFont End -->')
|
||
|
|
];
|
||
|
|
$phpMussel['HTML'] =
|
||
|
|
substr($phpMussel['HTML'], 0, $phpMussel['WebFontPos']['Begin']) . substr($phpMussel['HTML'], $phpMussel['WebFontPos']['End'] + 20);
|
||
|
|
unset($phpMussel['WebFontPos']);
|
||
|
|
}
|
||
|
|
|
||
|
|
/** Send HTML output and the kill the script. */
|
||
|
|
die($phpMussel['HTML']);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/** Exit the upload handler cleanly. */
|
||
|
|
unset($phpMussel['upload']);
|
||
|
|
|
||
|
|
/** Restores default error handler. */
|
||
|
|
restore_error_handler();
|