详解S-CMS企业建站v3几处SQL注入

 $debug=function(){
      $logFile='C:\\Users\\DELL\\Desktop\\debug.txt';   //输出的文件
      $param=func_get_args();           //获取传入函数的参数
      if (count($param)>0){              
        $str=serialize($param);           //序列号
        if($str){                  //存在就写入
          $str=file_get_contents($logFile)."\r\n\r\n".__FILE__.":\t\t".$str;
          file_put_contents($logFile,"\t\t".$str);
        }else{                 //不存在写入Null
          $str=file_get_contents($logFile)."\r\n\r\n".__FILE__.":\r\n".$str;
          file_put_contents($logFile,"\t\tNull");
        }
      }
    };$debug($x,$a,$b);   //这里$x,$a,$b都是要查看的变量。

case "text":
  $debug("select * from SL_text where T_id=" . $S_id, "T_title");
  if (getrs("select * from SL_text where T_id=" . $S_id, "T_title") == "") {
    box("菜单指向的简介已被删除，请到“菜单管理”重新编辑", "back", "error");
  } else {
    $page_info = ReplaceLableFlag(ReplaceWapTag(CreateHTMLReplace(CreateText(ReplaceWapPart(LoadWapTemplate($style, $S_id)) , $S_id))));
  }
  break;

if(isset($_GET["S_id"])){
  $S_id = $_GET["S_id"];
}else{
  $S_id = "0";
}

if($action=="input"){
  if ($_POST["code"]!=$_SESSION["CmsCode"]){
    echo "<div style='height:500px'></div>";
    box(lang("验证码错误！/l/Verification code error"),"back","error");
  }else{
    $R_time=date('Y-m-d H:i:s');
    $R_rid=gen_key(15);
    foreach ($_POST as $x=>$value) {
    if ($x>0){
      if ($_POST[$x]==""){
        box(lang("请填全内容后提交！/l/Please fill in the full content to submit!"),"back","error");
        die();
      }else{
        if (!IsValidStr($_POST[$x])){
        box(lang("您输入的内容有敏感字符，请重新输入！/l/The contents you have entered are sensitive characters, please re-enter!"),"back","error");
        }else{
$debug("Insert into SL_response(R_cid,R_content,R_time,R_rid,R_member) values(".$x.",'".htmlspecialchars($_POST[$x])."','".$R_time."','".$R_rid."',".$M_id.")");
        mysqli_query($conn,"Insert into SL_response(R_cid,R_content,R_time,R_rid,R_member) values(".$x.",'".htmlspecialchars($_POST[$x])."','".$R_time."','".$R_rid."',".$M_id.")");
        }
      }
    }
    }
    if ($F_cq>0){
    mysqli_query($conn,"Insert into SL_query(Q_code,Q_content,Q_sort) values('".$R_rid."','".date('Y-m-d H:i:s')."__用户提交表单，等待处理"."',".$F_cq.")");
    box(lang("提交成功，查询码 ".$R_rid."/l/success!code ".$R_rid.""),$C_dir.$url_to,"success");
  }else{
  box(lang("提交成功！/l/success!code ".$R_rid.""),$C_dir.$url_to,"success");
  }
    sendmail("您的网站有新的表单提交","<h2>您的网站“".lang($C_webtitle)."”有新的表单提交</h2><hr>请进入“网站后台” - “表单系统” - “查看统计”查看详情！",$C_email);

  }
}

if ($action=="query"){
$Q_sort=$_POST["Q_sort"];
$Q_code=$_POST["Q_code"];
  if ($_POST["code"]!=$_SESSION["CmsCode"]){
    echo "<div style='height:500px'></div>";
    box(lang("验证码错误！/l/Verification code error"),"back","error");
  }else{

    $sql="select * from SL_query where Q_sort=".$Q_sort." and Q_code like '".$Q_code."'";
    $result = mysqli_query($conn, $sql);
    $row = mysqli_fetch_assoc($result);