PHP实现清除wordpress里恶意代码
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。
恶意代码示例
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恶意代码清理程序
<?php
/**
*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('@<\?php\s*if\(\!isset\(\$GLOBALS\["\\\x61\\\156\\\x75\\\156\\\x61"\]\)\).*\$bssaiikhvn=\$jtgibaqypx-1;\s*\?>@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($filelistas$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($search_count);die;
echosprintf('从%s里共搜索到%s个符合条件的文件，其中%s个存在恶意代码，已处理结束',$path,count($search_count['all_file']),count($search_count['search_file1']));die;
########################
##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
*
*@accesspublic
*@paramstringfolder目录路径。不能使用相对于网站根目录的URL
*
*@returnbool
*/
functionmake_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$reval;
}
########获取目录下所有文件，包括子目录开始################
functionlistDir($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################
删除FTP里恶意代码(支持任意数量的文件处理)
<?php
/**
*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('@<\?php\s*if\(\!isset\(\$GLOBALS\["\\\x61\\\156\\\x75\\\156\\\x61"\]\)\).*\$bssaiikhvn=\$jtgibaqypx-1;\s*\?>@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($search_count);die;
echosprintf('从%s里共搜索到%s个符合条件的文件，其中%s个存在恶意代码已清理，原始文件保存在%s',$path,($file_count['all_file']),($file_count['filter_file']),$bak_path);die;
functionreplaceUnwantedCode($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);
returntrue;
}
########################
##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
*
*@accesspublic
*@paramstringfolder目录路径。不能使用相对于网站根目录的URL
*
*@returnbool
*/
functionmake_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;
}