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<?php |
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/** |
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* Class AIDXReader |
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* |
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* @link https://github.com/Narthorn/Halon/blob/master/halon.py |
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* |
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* @filesource AIDXReader.php |
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* @created 06.01.2019 |
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* @package codemasher\WildstarDB\Archive |
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* @author smiley <[email protected]> |
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* @copyright 2019 smiley |
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* @license MIT |
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*/ |
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namespace codemasher\WildstarDB\Archive; |
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use codemasher\WildstarDB\WSDBException; |
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use function array_fill, array_merge, fread, fseek, ftell, strpos, substr, unpack; |
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/** |
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* @property array $dirs |
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*/ |
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final class AIDXReader extends PACKReaderAbstract{ |
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private const AIDX_ROOT = 'a4ArchiveType/LVersion/LBuildnumber/LIndex'; |
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private const AIDX_DATA = 'LNameOffset/LFlags/QFiletime/QSizeUncompressed/QSizeCompressed/a20Hash/x4'; |
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/** @var array */ |
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protected $dirs; |
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/** |
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* @inheritDoc |
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*/ |
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protected function readData():void{ |
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// get the root info block of the AIDX file (4+4+4+4 = 16 bytes) |
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$rootInfo = unpack($this::AIDX_ROOT, fread($this->fh, 16)); |
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if($rootInfo['ArchiveType'] !== "\x58\x44\x49\x41"){ // XDIA |
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throw new WSDBException('invalid AIDX'); |
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} |
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$this->dirs = []; |
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$this->data = $this->getBlock($this->blocktable[$rootInfo['Index']]); |
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} |
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/** |
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* @param array $blockInfo |
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* @param string $parent |
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* |
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* @return array |
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*/ |
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private function getBlock(array $blockInfo, string $parent = ''):array{ |
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// add the current path to the collection |
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$this->dirs[] = $parent; |
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// find the info block |
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fseek($this->fh, $blockInfo['Offset']); |
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// get the count of directories and files in that block (4+4 = 8 bytes) |
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$n = unpack('Ldirs/Lfiles', fread($this->fh, 8)); |
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$dirs = array_fill(0, $n['dirs'], null); |
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$files = array_fill(0, $n['files'], null); |
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// create a directory object for each dir (4+4 = 8 bytes) |
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foreach($dirs as $i => $_){ |
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$dirs[$i] = new Directory(unpack('LNameOffset/LBlockIndex', fread($this->fh, 8)), $parent); |
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} |
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// create a file object for each file (4+4+8+8+8+20+4 = 56 bytes) |
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foreach($files as $i => $_){ |
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$files[$i] = new File(unpack($this::AIDX_DATA, fread($this->fh, 56)), $parent); |
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} |
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// read the list of names from the remaining data |
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$names = fread($this->fh, $blockInfo['Size'] - (ftell($this->fh) - $blockInfo['Offset'])); |
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$getname = function(ItemAbstract $e) use ($names){ |
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return '/'.substr($names, $e->NameOffset, strpos($names, "\x00", $e->NameOffset) - $e->NameOffset); |
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}; |
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// apply the names to each object in the block |
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foreach($dirs as $i => $e){ |
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$dirs[$i]->Name = $getname($e); |
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} |
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foreach($files as $i => $e){ |
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$files[$i]->Name = $getname($e); |
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} |
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// loop through the directory stucture recursively and add the block data |
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foreach($dirs as $i => $info){ |
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if(isset($this->blocktable[$info->BlockIndex])){ |
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$dirs[$i]->Content = $this->getBlock($this->blocktable[$info->BlockIndex], $parent.$info->Name); |
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} |
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} |
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return array_merge($dirs, $files); |
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} |
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} |
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codemasher /
wildstar-database
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