php获取apk包信息的方法

有时候在使用php上传安卓apk包的时候，我们需要获取安卓apk包内的信息，本文以实例形式讲述了php获取apk包信息的方法。具体实现方法如下：

<?php
/*解析安卓apk包中的压缩xml文件，还原和读取xml内容
依赖功能：需要php的zip包函数支持。*/
include('./apkparser.php');
$appobj  = new apkparser(); 
$targetfile = a.apk;//apk所在的路径地址
$res   = $appobj->open($targetfile);
$appobj->getappname();     // 应用名称
$appobj->getpackage();    // 应用包名
$appobj->getversionname();  // 版本名称
$appobj->getversioncode();  // 版本代码
?>

以下是apkparser类包，把以下代码复制出来保存为apkparser.php就可以执行以上代码

<?php
//-------------------------------
//apkparser类包开始
//-------------------------------
class apkparser{
//----------------------
// 公共函数，供外部调用
//----------------------
  public function open($apk_file, $xml_file='androidmanifest.xml'){
    $zip = new \ziparchive;
    if ($zip->open($apk_file) === true) {
      $xml = $zip->getfromname($xml_file);
      $zip->close();
      if ($xml){
        try {
          return $this->parsestring($xml);
        }catch (exception $e){
        }
      }
    }
    return false;
  }
  public function parsestring($xml){
    $this->xml = $xml;
    $this->length = strlen($xml);
    $this->root = $this->parseblock(self::axml_file);
    return true;
  }
  public function getxml($node=null, $lv=-1){
    if ($lv == -1) $node = $this->root;
    if (!$node) return '';
    if ($node['type'] == self::end_tag) $lv--;
    $xml = @($node['line'] == 0 || $node['line'] == $this->line) ? '' : "\n".str_repeat(' ', $lv);
    $xml .= $node['tag'];
    $this->line = @$node['line'];
    foreach ($node['child'] as $c){
      $xml .= $this->getxml($c, $lv+1);
    }
    return $xml;
  }
  public function getpackage(){
    return $this->getattribute('manifest', 'package');
  }
  public function getversionname(){
    return $this->getattribute('manifest', 'android:versionname');
  }
  public function getversioncode(){
    return $this->getattribute('manifest', 'android:versioncode');
  }
  public function getappname(){
    return $this->getattribute('manifest/application', 'android:name');
  }
  public function getmainactivity(){
    for ($id=0; true; $id++){
      $act = $this->getattribute("manifest/application/activity[{$id}]/intent-filter/action", 'android:name');
      if (!$act) break;
      if ($act == 'android.intent.action.main') return $this->getactivity($id);
    }
    return null;
  }
  public function getactivity($idx=0){
    $idx = intval($idx);
    return $this->getattribute("manifest/application/activity[{$idx}]", 'android:name');
  }
  public function getattribute($path, $name){
    $r = $this->getelement($path);
    if (is_null($r)) return null;
    if (isset($r['attrs'])){
      foreach ($r['attrs'] as $a){
        if ($a['ns_name'] == $name) return $this->getattributevalue($a);
      }
    }
    return null;
  }
//----------------------
// 类型常量定义
//----------------------
  const axml_file       = 0x00080003;
  const string_block     = 0x001c0001;
  const resourceids      = 0x00080180;
  const start_namespace    = 0x00100100;
  const end_namespace     = 0x00100101;
  const start_tag       = 0x00100102;
  const end_tag        = 0x00100103;
  const text         = 0x00100104;
  const type_null       =0;
  const type_reference    =1;
  const type_attribute    =2;
  const type_string      =3;
  const type_float      =4;
  const type_dimension    =5;
  const type_fraction     =6;
  const type_int_dec     =16;
  const type_int_hex     =17;
  const type_int_boolean   =18;
  const type_int_color_argb8 =28;
  const type_int_color_rgb8  =29;
  const type_int_color_argb4 =30;
  const type_int_color_rgb4  =31;
  const unit_mask       = 15;
  private static $radix_mults = array(0.00390625, 3.051758e-005, 1.192093e-007, 4.656613e-010);
  private static $dimension_units = array("px","dip","sp","pt","in","mm","","");
  private static $fraction_units = array("%","%p","","","","","","");
  private $xml='';
  private $length = 0;
  private $stringcount = 0;
  private $stylecount = 0;
  private $stringtab = array();
  private $styletab = array();
  private $resourceids = array();
  private $ns = array();
  private $cur_ns = null;
  private $root = null;
  private $line = 0;
//----------------------
// 内部私有函数
//----------------------
  private function getelement($path){
    if (!$this->root) return null;
    $ps = explode('/', $path);
    $r = $this->root;
    foreach ($ps as $v){
      if (preg_match('/([^\[]+)\[([0-9]+)\]$/', $v, $ms)){
        $v = $ms[1];
        $off = $ms[2];
      }else {
        $off = 0;
      }
      foreach ($r['child'] as $c){
        if ($c['type'] == self::start_tag && $c['ns_name'] == $v){
          if ($off == 0){
            $r = $c; continue 2;
          }else {
            $off--;
          }
        }
      }
      // 没有找到节点
      return null;
    }
    return $r;
  }
  private function parseblock($need = 0){
    $o = 0;
    $type = $this->get32($o);
    if ($need && $type != $need) throw new exception('block type error', 1);
    $size = $this->get32($o);
    if ($size < 8 || $size > $this->length) throw new exception('block size error', 2);
    $left = $this->length - $size;
    $props = false;
    switch ($type){
      case self::axml_file:
        $props = array(
          'line' => 0,
          'tag' => '<?xml version="1.0" encoding="utf-8"?>'
        );
      break;
      case self::string_block:
        $this->stringcount = $this->get32($o);
        $this->stylecount = $this->get32($o);
        $o += 4;
        $stroffset = $this->get32($o);
        $styoffset = $this->get32($o);
        $strlistoffset = $this->get32array($o, $this->stringcount);
        $stylistoffset = $this->get32array($o, $this->stylecount);
        $this->stringtab = $this->stringcount > 0 ? $this->getstringtab($stroffset, $strlistoffset) : array();
        $this->styletab = $this->stylecount > 0 ? $this->getstringtab($styoffset, $stylistoffset) : array();
        $o = $size;
      break;
      case self::resourceids:
        $count = $size / 4 - 2;
        $this->resourceids = $this->get32array($o, $count);
      break;
      case self::start_namespace:
        $o += 8;
        $prefix = $this->get32($o);
        $uri = $this->get32($o);
        if (empty($this->cur_ns)){
          $this->cur_ns = array();
          $this->ns[] = &$this->cur_ns;
        }
        $this->cur_ns[$uri] = $prefix;
      break;
      case self::end_namespace:
        $o += 8;
        $prefix = $this->get32($o);
        $uri = $this->get32($o);
        if (empty($this->cur_ns)) break;
        unset($this->cur_ns[$uri]);
      break;
      case self::start_tag:
        $line = $this->get32($o);
        $o += 4;
        $attrs = array();
        $props = array(
          'line' => $line,
          'ns' => $this->getnamespace($this->get32($o)),
          'name' => $this->getstring($this->get32($o)),
          'flag' => $this->get32($o),
          'count' => $this->get16($o),
          'id' => $this->get16($o)-1,
          'class' => $this->get16($o)-1,
          'style' => $this->get16($o)-1,
          'attrs' => &$attrs
        );
        $props['ns_name'] = $props['ns'].$props['name'];
        for ($i=0; $i < $props['count']; $i++){
          $a = array(
            'ns' => $this->getnamespace($this->get32($o)),
            'name' => $this->getstring($this->get32($o)),
            'val_str' => $this->get32($o),
            'val_type' => $this->get32($o),
            'val_data' => $this->get32($o)
          );
          $a['ns_name'] = $a['ns'].$a['name'];
          $a['val_type'] >>= 24;
          $attrs[] = $a;
        }
        // 处理tag字符串
        $tag = "<{$props['ns_name']}";
        foreach ($this->cur_ns as $uri => $prefix){
          $uri = $this->getstring($uri);
          $prefix = $this->getstring($prefix);
          $tag .= " xmlns:{$prefix}=\"{$uri}\"";
        }
        foreach ($props['attrs'] as $a){
          $tag .= " {$a['ns_name']}=\"".
              $this->getattributevalue($a).
              '"';
        }
        $tag .= '>';
        $props['tag'] = $tag;
        unset($this->cur_ns);
        $this->cur_ns = array();
        $this->ns[] = &$this->cur_ns;
        $left = -1;
      break;
      case self::end_tag:
        $line = $this->get32($o);
        $o += 4;
        $props = array(
          'line' => $line,
          'ns' => $this->getnamespace($this->get32($o)),
          'name' => $this->getstring($this->get32($o))
        );
        $props['ns_name'] = $props['ns'].$props['name'];
        $props['tag'] = "</{$props['ns_name']}>";
        if (count($this->ns) > 1){
          array_pop($this->ns);
          unset($this->cur_ns);
          $this->cur_ns = array_pop($this->ns);
          $this->ns[] = &$this->cur_ns;
        }
      break;
      case self::text:
        $o += 8;
        $props = array(
          'tag' => $this->getstring($this->get32($o))
        );
        $o += 8;
      break;
      default:
        throw new exception('block type error', 3);
      break;
    }
    $this->skip($o);
    $child = array();
    while ($this->length > $left){
      $c = $this->parseblock();
      if ($props && $c) $child[] = $c;
      if ($left == -1 && $c['type'] == self::end_tag){
        $left = $this->length;
        break;
      }
    }
    if ($this->length != $left) throw new exception('block overflow error', 4);
    if ($props){
      $props['type'] = $type;
      $props['size'] = $size;
      $props['child'] = $child;
      return $props;
    }else {
      return false;
    }
  }
  private function getattributevalue($a){
    $type = &$a['val_type'];
    $data = &$a['val_data'];
    switch ($type){
      case self::type_string:
        return $this->getstring($a['val_str']);
      case self::type_attribute:
        return sprintf('?%s%08x', self::_getpackage($data), $data);
      case self::type_reference:
        return sprintf('@%s%08x', self::_getpackage($data), $data);
      case self::type_int_hex:
        return sprintf('0x%08x', $data);
      case self::type_int_boolean:
        return ($data != 0 ? 'true' : 'false');
      case self::type_int_color_argb8:
      case self::type_int_color_rgb8:
      case self::type_int_color_argb4:
      case self::type_int_color_rgb4:
        return sprintf('#%08x', $data);
      case self::type_dimension:
        return $this->_complextofloat($data).self::$dimension_units[$data & self::unit_mask];
      case self::type_fraction:
        return $this->_complextofloat($data).self::$fraction_units[$data & self::unit_mask];
      case self::type_float:
        return $this->_int2float($data);
    }
    if ($type >=self::type_int_dec && $type < self::type_int_color_argb8){
      return (string)$data;
    }
    return sprintf('<0x%x, type 0x%02x>', $data, $type);
  }
  private function _complextofloat($data){
    return (float)($data & 0xffffff00) * self::$radix_mults[($data>>4) & 3];
  }
  private function _int2float($v) {
    $x = ($v & ((1 << 23) - 1)) + (1 << 23) * ($v >> 31 | 1);
    $exp = ($v >> 23 & 0xff) - 127;
    return $x * pow(2, $exp - 23);
  }
  private static function _getpackage($data){
    return ($data >> 24 == 1) ? 'android:' : '';
  }
  private function getstringtab($base, $list){
    $tab = array();
    foreach ($list as $off){
      $off += $base;
      $len = $this->get16($off);
      $mask = ($len >> 0x8) & 0xff;
      $len = $len & 0xff;
      if ($len == $mask){
        if ($off + $len > $this->length) throw new exception('string table overflow', 11);
        $tab[] = substr($this->xml, $off, $len);
      }else {
        if ($off + $len * 2 > $this->length) throw new exception('string table overflow', 11);
        $str = substr($this->xml, $off, $len * 2);
        $tab[] = mb_convert_encoding($str, 'utf-8', 'ucs-2le');
      }
    }
    return $tab;
  }
  private function getstring($id){
    if ($id > -1 && $id < $this->stringcount){
      return $this->stringtab[$id];
    }else {
      return '';
    }
  }
  private function getnamespace($uri){
    for ($i=count($this->ns); $i > 0; ){
      $ns = $this->ns[--$i];
      if (isset($ns[$uri])){
        $ns = $this->getstring($ns[$uri]);
        if (!empty($ns)) $ns .= ':';
        return $ns;
      }
    }
    return '';
  }
  private function get32(&$off){
    $int = unpack('v', substr($this->xml, $off, 4));
    $off += 4;
    return array_shift($int);
  }
  private function get32array(&$off, $size){
    if ($size <= 0) return null;
    $arr = unpack('v*', substr($this->xml, $off, 4 * $size));
    if (count($arr) != $size) throw new exception('array size error', 10);
    $off += 4 * $size;
    return $arr;
  }
  private function get16(&$off){
    $int = unpack('v', substr($this->xml, $off, 2));
    $off += 2;
    return array_shift($int);
  }
  private function skip($size){
    $this->xml = substr($this->xml, $size);
    $this->length -= $size;
  }
}
//---------------------
//apkparser类包结束 
//---------------------
?>

感兴趣的朋友可以调试运行一下本文实例，相信会对大家的php程序开发带来一定的启发。