公司一些wordpress网站由于下载的插件存在恶意代码,导致整个服务器所有网站PHP文件都存在恶意代码,就写了个简单的脚本清除。
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/**
- * 文件名:delUnwantedCode.php
- * 功能:删除FTP里恶意代码
- * 使用说明:
- * 请将文件上传到需要清除恶意代码的目录,然后通过CLI或浏览器访问即可,原有被感染的文件会自动备份
- */
-
-
- $path = dirname(__FILE__); #定义需要处理的目录
- $bak_path = $path.DIRECTORY_SEPARATOR.basename(__FILE__,'.php'); #定义源文件备份目录,程序过滤恶意代码前,先按原有的路径备份文档到此目录
- $fileType = array('php'); #定义需要处理的文件类型(后缀名),小写
- $search = array('@@si'); #定义需要过滤的恶意代码规则
- $search_count = array(
- 'all_file'=>array(), #所有文件
- 'search_file0'=>array(), #没有恶意代码文件
- 'search_file1'=>array() #含有恶意代码文件
- );
-
-
- $filelist = listDir($path,$fileType,false); #读取目录里符合条件文件列表
- if(!empty($filelist)){
- foreach ($filelist as $file){
- $file = (isset($file['name'])?$file['name']:$file);
- $search_count['all_file'][] = $file;
- $fileContent = file_get_contents($file);
- $compile_fileContent = preg_replace($search, '', $fileContent);
- if(strlen($fileContent) != strlen($compile_fileContent) && str_replace($bak_path, '', $file)==$file){
- #过滤后文件长度不一致,则表示含有恶意代码(备份文件所在目录不过滤)
- $search_count['search_file1'][] = $file;
-
- ############备份原有文件 开始###############
- $bakFile = str_replace($path, $bak_path, $file);
- @make_dir(dirname($bakFile));
- @file_put_contents($bakFile, $fileContent);
- ############备份原有文件 结束###############
-
- #重新写入过滤后的内容到原有的PHP文件
- @file_put_contents($file, $compile_fileContent);
- }else{
- $search_count['search_file0'][] = $file;
- }
- }
- }
-
- #print_r($search_count);die;
- echo sprintf('从%s里共搜索到%s个符合条件的文件,其中%s个存在恶意代码,已处理结束',$path,count($search_count['all_file']), count($search_count['search_file1']));die;
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-
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-
-
-
-
-
-
-
-
-
-
-
-
- ########################
- ## 辅助函数
- ########################
-
- /**
- * 检查目标文件夹是否存在,如果不存在则自动创建该目录
- *
- * @access public
- * @param string folder 目录路径。不能使用相对于网站根目录的URL
- *
- * @return bool
- */
- function make_dir($folder){
- $reval = false;
- if (!file_exists($folder)){
- #如果目录不存在则尝试创建该目录
- @umask(0);
-
- #将目录路径拆分成数组
- preg_match_all('/([^\/]*)\/?/i', $folder, $atmp);
-
- #如果第一个字符为/则当作物理路径处理
- $base = ($atmp[0][0] == '/') ? '/' : '';
-
- #遍历包含路径信息的数组
- foreach ($atmp[1] AS $val){
- if ('' != $val){
- $base .= $val;
- if ('..' == $val || '.' == $val){
- #如果目录为.或者..则直接补/继续下一个循环
- $base .= '/';
- continue;
- }
- }else{
- continue;
- }
-
- $base .= '/';
-
- if (!file_exists($base)){
- #尝试创建目录,如果创建失败则继续循环
- if (@mkdir(rtrim($base, '/'), 0777)){
- @chmod($base, 0777);
- $reval = true;
- }
- }
- }
- }else{
- #路径已经存在。返回该路径是不是一个目录
- $reval = is_dir($folder);
- }
-
- clearstatcache();
-
- return $reval;
- }
-
-
- ########获取目录下所有文件,包括子目录 开始################
- function listDir($path,$fileType=array(),$fileInfo=true){
- $path = str_replace(array('/','\\'), DIRECTORY_SEPARATOR, $path);
- if(!file_exists($path)||!is_dir($path)){
- return '';
- }
- if(substr($path, -1,1)==DIRECTORY_SEPARATOR){
- $path = substr($path, 0,-1);
- }
- $dirList=array();
- $dir=opendir($path);
- while($file=readdir($dir)){
- #若有定义$fileType,并且文件类型不在$fileType范围内或文件是一个目录,则跳过
- if($file!=='.'&&$file!=='..'){
- $file = $path.DIRECTORY_SEPARATOR.$file;
- if(is_dir($file)){
- if(empty($fileType)){
- $dirList[] = ($fileInfo==true?array('name'=>$file,'isDir'=>intval(is_dir($file))):$file);
- }
- $dirList = array_merge($dirList,listDir($file,$fileType));
- }elseif(!empty($fileType) && (in_array(pathinfo($file, PATHINFO_EXTENSION), $fileType))){
- $dirList[] = ($fileInfo==true?array('name'=>$file,'isDir'=>intval(is_dir($file)),'md5_file'=>md5_file($file),'filesize'=>filesize($file),'filemtime'=>filemtime($file)):$file);
- }
- };
- };
- closedir($dir);
- return $dirList;
- }
- ########获取目录下所有文件,包括子目录 结束################
-
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/**
- * 文件名:delAllUnwantedCode.php
- * 功能:删除FTP里恶意代码(支持任意数量的文件处理)
- * 使用说明:
- * 请将文件上传到需要清除恶意代码的目录,然后通过CLI或浏览器访问即可,原有被感染的文件会自动备份
- */
- set_time_limit(0);ignore_user_abort(true);
-
- $path = dirname(__FILE__); #定义需要处理的目录
- $bak_path = $path.DIRECTORY_SEPARATOR.basename(__FILE__,'.php'); #定义源文件备份目录,程序过滤恶意代码前,先按原有的路径备份文档到此目录
- $fileType = array('php'); #定义需要处理的文件类型(后缀名),小写
- $search = array('@@si'); #定义需要过滤的恶意代码规则
- $file_count = array(
- 'all_file'=>0, #所有文件
- 'filter_file'=>0 #含有恶意代码文件
- );
-
- replaceUnwantedCode($path); #执行过滤
-
- #print_r($search_count);die;
- echo sprintf('从%s里共搜索到%s个符合条件的文件,其中%s个存在恶意代码已清理,原始文件保存在%s',$path, ($file_count['all_file']), ($file_count['filter_file']), $bak_path);die;
-
-
-
- function replaceUnwantedCode($path){
- global $bak_path,$fileType,$search,$file_count;
- $path = str_replace(array('/','\\'), DIRECTORY_SEPARATOR, $path);
- if(!file_exists($path)||!is_dir($path)){
- return '';
- }
- if(substr($path, -1,1)==DIRECTORY_SEPARATOR){
- $path = substr($path, 0,-1);
- }
- $dir=opendir($path);
- while($file=readdir($dir)){
- #若有定义$fileType,并且文件类型不在$fileType范围内或文件是一个目录,则跳过
- if($file!=='.'&&$file!=='..'){
- $file = $path.DIRECTORY_SEPARATOR.$file;
- if(is_dir($file)){
- replaceUnwantedCode($file);
- }elseif(!empty($fileType) && (in_array(pathinfo($file, PATHINFO_EXTENSION), $fileType))){
- ################################
- @$file_count['all_file']++;
- $fileContent = file_get_contents($file); #文件原始代码
- $compile_fileContent = preg_replace($search, '', $fileContent); #过滤后的内容
- if(strlen($fileContent) != strlen($compile_fileContent) && str_replace($bak_path, '', $file)==$file){
- #过滤后文件长度不一致,则表示含有恶意代码(备份文件所在目录不过滤)
- $file_count['filter_file']++;
-
- ############备份原有文件 开始###############
- $bakFile = str_replace($path, $bak_path, $file);
- @make_dir(dirname($bakFile));
- @file_put_contents($bakFile, $fileContent);
- ############备份原有文件 结束###############
-
- #重新写入过滤后的内容到原有的PHP文件
- @file_put_contents($file, $compile_fileContent);
- }
- ################################
- unset($fileContent,$compile_fileContent);
- }
- };
- };
- closedir($dir);
- return true;
- }
-
-
-
-
-
- ########################
- ## 辅助函数
- ########################
-
- /**
- * 检查目标文件夹是否存在,如果不存在则自动创建该目录
- *
- * @access public
- * @param string folder 目录路径。不能使用相对于网站根目录的URL
- *
- * @return bool
- */
- function make_dir($folder){
- $reval = false;
- if (!file_exists($folder)){
- #如果目录不存在则尝试创建该目录
- @umask(0);
-
- #将目录路径拆分成数组
- preg_match_all('/([^\/]*)\/?/i', $folder, $atmp);
-
- #如果第一个字符为/则当作物理路径处理
- $base = ($atmp[0][0] == '/') ? '/' : '';
-
- #遍历包含路径信息的数组
- foreach ($atmp[1] AS $val){
- if ('' != $val){
- $base .= $val;
- if ('..' == $val || '.' == $val){
- #如果目录为.或者..则直接补/继续下一个循环
- $base .= '/';
- continue;
- }
- }else{
- continue;
- }
-
- $base .= '/';
-
- if (!file_exists($base)){
- #尝试创建目录,如果创建失败则继续循环
- if (@mkdir(rtrim($base, '/'), 0777)){
- @chmod($base, 0777);
- $reval = true;
- }
- }
- }
- }else{
- #路径已经存在。返回该路径是不是一个目录
- $reval = is_dir($folder);
- }
-
- clearstatcache();
-
- return $reval;
- }
-
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