/**
* List all files inside wp-content that have been modified in the last days.
*
* @return void
*/
function sucuriscan_modified_files()
{
$valid_day_ranges = array(1, 3, 7, 30, 60);
$template_variables = array('ModifiedFiles.List' => '', 'ModifiedFiles.SelectOptions' => '', 'ModifiedFiles.NoFilesVisibility' => 'visible', 'ModifiedFiles.DisabledVisibility' => 'hidden', 'ModifiedFiles.Days' => 0);
// Find files modified in the last days.
$back_days = SucuriScanRequest::post(':last_days', '[0-9]+');
if ($back_days !== false) {
if ($back_days <= 0) {
$back_days = 1;
} elseif ($back_days >= 60) {
$back_days = 60;
}
} else {
$back_days = 7;
}
// Fix data type for the back days variable.
$back_days = intval($back_days);
$template_variables['ModifiedFiles.Days'] = $back_days;
// Generate the options for the select field of the page form.
foreach ($valid_day_ranges as $day) {
$selected_option = $back_days == $day ? 'selected="selected"' : '';
$template_variables['ModifiedFiles.SelectOptions'] .= sprintf('<option value="%d" %s>%d</option>', $day, $selected_option, $day);
}
// The scanner for modified files can be disabled from the settings page.
if (SucuriScanOption::is_enabled(':scan_modfiles')) {
// Search modified files among the project's files.
$content_hashes = sucuriscan_get_integrity_tree(WP_CONTENT_DIR, true);
if (!empty($content_hashes)) {
$back_days = current_time('timestamp') - $back_days * 86400;
$counter = 0;
foreach ($content_hashes as $file_path => $file_info) {
if (isset($file_info['modified_at']) && $file_info['modified_at'] >= $back_days) {
$css_class = $counter % 2 == 0 ? '' : 'alternate';
$mod_date = SucuriScan::datetime($file_info['modified_at']);
$template_variables['ModifiedFiles.List'] .= SucuriScanTemplate::get_snippet('integrity-modifiedfiles', array('ModifiedFiles.CssClass' => $css_class, 'ModifiedFiles.CheckSum' => $file_info['checksum'], 'ModifiedFiles.FilePath' => SucuriScan::escape($file_path), 'ModifiedFiles.DateTime' => $mod_date, 'ModifiedFiles.FileSize' => $file_info['filesize'], 'ModifiedFiles.FileSizeHuman' => SucuriScan::human_filesize($file_info['filesize']), 'ModifiedFiles.FileSizeNumber' => number_format($file_info['filesize'])));
$counter += 1;
}
}
if ($counter > 0) {
$template_variables['ModifiedFiles.NoFilesVisibility'] = 'hidden';
}
}
} else {
$template_variables['ModifiedFiles.DisabledVisibility'] = 'visible';
}
return SucuriScanTemplate::get_section('integrity-modifiedfiles', $template_variables);
}
/**
* Check whether the core WordPress files where modified, removed or if any file
* was added to the core folders. This function returns an associative array with
* these keys:
*
* <ul>
* <li>modified: Files with a different checksum according to the official WordPress archives,</li>
* <li>stable: Files with the same checksums than the official files,</li>
* <li>removed: Official files which are not present in the local project,</li>
* <li>added: Files present in the local project but not in the official WordPress packages.</li>
* </ul>
*
* @param integer $version Valid version number of the WordPress project.
* @return array Associative array with these keys: modified, stable, removed, added.
*/
function sucuriscan_check_core_integrity($version = 0)
{
$latest_hashes = SucuriScanAPI::getOfficialChecksums($version);
$base_content_dir = defined('WP_CONTENT_DIR') ? basename(rtrim(WP_CONTENT_DIR, '/')) : '';
if (!$latest_hashes) {
return false;
}
$output = array('added' => array(), 'removed' => array(), 'modified' => array(), 'stable' => array());
// Get current filesystem tree.
$wp_top_hashes = sucuriscan_get_integrity_tree(ABSPATH, false);
$wp_admin_hashes = sucuriscan_get_integrity_tree(ABSPATH . 'wp-admin', true);
$wp_includes_hashes = sucuriscan_get_integrity_tree(ABSPATH . 'wp-includes', true);
$wp_core_hashes = array_merge($wp_top_hashes, $wp_admin_hashes, $wp_includes_hashes);
// Compare remote and local checksums and search removed files.
foreach ($latest_hashes as $file_path => $remote_checksum) {
if (sucuriscan_ignore_integrity_filepath($file_path)) {
continue;
}
$full_filepath = sprintf('%s/%s', ABSPATH, $file_path);
// Patch for custom content directory path.
if (!file_exists($full_filepath) && strpos($file_path, 'wp-content') !== false && defined('WP_CONTENT_DIR')) {
$file_path = str_replace('wp-content', $base_content_dir, $file_path);
$dir_content_dir = dirname(rtrim(WP_CONTENT_DIR, '/'));
$full_filepath = sprintf('%s/%s', $dir_content_dir, $file_path);
}
// Check whether the official file exists or not.
if (file_exists($full_filepath)) {
$local_checksum = @md5_file($full_filepath);
if ($local_checksum !== false && $local_checksum === $remote_checksum) {
$output['stable'][] = array('filepath' => $file_path, 'is_fixable' => false, 'modified_at' => 0);
} else {
$modified_at = @filemtime($full_filepath);
$is_fixable = (bool) is_writable($full_filepath);
$output['modified'][] = array('filepath' => $file_path, 'is_fixable' => $is_fixable, 'modified_at' => $modified_at);
}
} else {
$is_fixable = is_writable(dirname($full_filepath));
$output['removed'][] = array('filepath' => $file_path, 'is_fixable' => $is_fixable, 'modified_at' => 0);
}
}
// Search added files (files not common in a normal wordpress installation).
foreach ($wp_core_hashes as $file_path => $extra_info) {
$file_path = str_replace(DIRECTORY_SEPARATOR, '/', $file_path);
$file_path = @preg_replace('/^\\.\\/(.*)/', '$1', $file_path);
if (sucuriscan_ignore_integrity_filepath($file_path)) {
continue;
}
if (!array_key_exists($file_path, $latest_hashes)) {
$full_filepath = ABSPATH . '/' . $file_path;
$modified_at = @filemtime($full_filepath);
$is_fixable = (bool) is_writable($full_filepath);
$output['added'][] = array('filepath' => $file_path, 'is_fixable' => $is_fixable, 'modified_at' => $modified_at);
}
}
return $output;
}