php脚本生成google play url的下载链接，下载apk并自动反编译后获取android版本号

    需求:

    get the offer tracking link
    follow the redirect to get google play url
    Go to http://apps.evozi.com/apk-downloader/
    Enter google play url
    Download APK file
    Decompile APK file using https://code.google.com/p/android-apktool/wiki/ApktoolOptions#Decompile_Options
    Extract this file
    [app name]/smali/com/kochava/android/tracker/Global.smali
    Extract this line
    .field public static final SDK_VERSION:Ljava/lang/String; = "Android20141023"
    This output the Kochava SDK version numbe

脚本的目的就是将上面的操作步骤自动化

运行脚本之前必须在linux里安装apktool和java环境

操作演示：

 上面输入的是应用的包名字，你也可以输入对应的google play url:     https://play.google.com/store/apps/details?hl=en&id=com.priceline.android.negotiator

  以下是代码：

 

 <?php
    fwrite(STDOUT, "please enter the google play url or app package name: ");
    $url = trim(fgets(STDIN));
    $name_reg="/id=([^&]+)/";
    preg_match($name_reg,$url,$name);
    if(empty($name)){
           $packagename=$url;
    }else{
           $packagename=$name[1];
    }
    function getParameter(){
       $url="http://apps.evozi.com/apk-downloader";
          $context=file_get_contents($url);
          preg_match("/var evoziJsData = {(.+)};/",$context,$json);
          $t=explode(",",$json[1]);
          foreach($t as $key=>$value){
              $value=str_replace(' ','',$value);
              $t[$key]=$value;
          }
          $token_value=explode(":",$t[1]);
          $t_value=$token_value[1];
          $dtrken=explode(":",$t[2]);
          $patten="/var ".$dtrken[1]." = '(.+)';/";
          preg_match($patten,$context,$daw);
          $dtrken[1]=$daw[1];
          return array("t"=>$t_value,"dtrken"=>$dtrken);
    }
    function ajaxPost($packagename) {
          $tk=getParameter();
          $t=$tk['t'];
          $dtrken_key=$tk['dtrken'][0];
          $dtrken_value=$tk['dtrken'][1];
             $post_url='http://api.evozi.com/apk-downloader/download';
           $data = 'packagename='.$packagename.'&t='.$t.'&'.$dtrken_key.'='.$dtrken_value.'&fetch=false';
             $ch = curl_init();
             $headers = array('content-type: application/x-www-form-urlencoded;charset=UTF-8');
             curl_setopt($ch, CURLOPT_URL, $post_url);
             curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
             curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
             curl_setopt($ch, CURLOPT_POST, 1);
             curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
             $results = curl_exec($ch);
             curl_close($ch);
             $results = json_decode($results);
             return $results;
         }
         function getVersion($packagename){
               $version="/Android[0-9]+/";
               $path=$packagename."/smali/com/kochava/android/tracker";
               $filename1="Global.smali";
               $filename2="a.smali";
               if(is_dir($path)){
                     $file=scandir($path);
                     foreach($file as $key=>$value){
                           $filename=$value;
                           if(isset($filename)&file_exists($path."/".$filename)){
                                     $context=file_get_contents($path."/".$filename);
                                     preg_match($version,$context,$v);
                                     if(!empty($v)){
                                        $vs=$v[0];
                                        break;
                                     }
                         }
                     }
                     if(isset($vs)){
                           $info=array("status"=>200,"description"=>"success detection in the file:".$filename,"version"=>$vs);
                      }else{
                           $info=array("status"=>203,"description"=>"failure detection in all the .smal file:(".$file."),we can't find the android version number");
                      }
               }else{
                    $info=array("status"=>201,"description"=>"there is no such directory:".$path);
               }
               $info=json_encode($info);
               return $info;
         }
         function getFile($file_path,$file_name){
             exec("sudo wget -O $file_name $file_path");
         }
         function deCompileApk($file_name){
                   print_r("++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++start decompile apk,this may need a long time,please wait...++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++".PHP_EOL);
                   exec("sudo apktool d $file_name");
                   print_r("++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++decompile end++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++".PHP_EOL);
         }
         function delFile($packagename,$file_name){
                   exec("sudo rm -f $file_name");
                   exec("sudo rm -rf $packagename");
         }
         $result=ajaxPost($packagename);
         if($result->status=="success"){
              $file_name=$packagename."."."apk";
            $downloadUrl=$result->url;
            $downloadUrl=preg_replace("/&/i", "\&", $downloadUrl);
        getFile($downloadUrl,$file_name);
        deCompileApk($file_name);
        $info=getVersion($packagename);
        delFile($packagename,$file_name);
         }else{
              $tinfo=array("status"=>204,"description"=>"we can't generate Download Link from http://apps.evozi.com/apk-downloader/,please check your input of google play url or app package name!");
              $info=json_encode($tinfo);
         }
         print_r($info.PHP_EOL);
 ?>