PHP解析Android APK包的XML文件
来源：互联网 发布：python 自动测试框架 编辑：程序博客网 时间：2024/06/05 03:18
最近做的一个项目需要用PHP直接读取apk包中的信息，如：包名，入口地址，版本号等信息。这些信息都保存在apk包中的AndroidManifest.xml文件中。但是在编译apk包的过程中，所有XML文件都经过了压缩编码，直接读取xml文件内容是无法解析出需要的信息的。
Google搜索了一下没有找到这个功能的PHP实现，只有找到一个Java工具AXMLPrinter，可以还原经过压缩后的XML文件内容。于是就参考了这个Java工具的源码，按照这个压缩后的XML文件格式写了一个PHP的还原功能类。
类实现了直接读取apk包中指定的XML文件内容（使用PHP的zip功能函数直接解压apk包），无需手动解压apk获取文件。
类功能不多，所有供外部调用的方法都表明了公开，私有函数均是解码函数，不推荐直接调用。
使用例子：
<?phprequire('apk_parser.php');$p= new ApkParser();$res= $p->open('android_app.apk');echo $p->getXML();?>apk_parser.php源代码：
<?php/****************************************************** * Android APK File Parser * Author: Katana * Version: v0.1 * Web: http://www.win-ing.cn * * 功能：解析安卓apk包中的压缩XML文件，还原和读取XML内容 * * 依赖功能：需要PHP的ZIP包函数支持。 ******************************************************/ class ApkParser{//----------------------// 公共函数，供外部调用//---------------------- public function open($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; }}?>原文地址：点击打开链接
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