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Copy pathBinTreeNodeWriter.php
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Copy pathBinTreeNodeWriter.php
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383 lines (342 loc) · 9.8 KB
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<?php
class BinTreeNodeWriter
{
private $output;
/** @var $key KeyStream */
private $key;
public function resetKey()
{
$this->key = null;
}
public function setKey($key)
{
$this->key = $key;
}
/*public function ResetStreamNewStanza(){
return "\x00\x00\x00";
}*/
/*public function NewStreamReset(){
$this->output = "\x00\x00\x00\x00\x00\x00";
}*/
public function StartStream($domain, $resource)
{
$attributes = [];
$attributes['to'] = $domain;
$attributes['resource'] = $resource;
$this->writeListStart(count($attributes) * 2 + 1);
$this->output .= "\x01";
$this->writeAttributes($attributes);
//echo "tx "se. "WA" . $this->writeInt8(1) . $this->writeInt8(6)."\n";
return 'WA'.$this->writeInt8(1).$this->writeInt8(6).$this->flushBuffer();
}
/**
* @param ProtocolNode $node
* @param bool $encrypt
*
* @return string
*/
public function write($node, $encrypt = true)
{
if ($node == null) {
$this->output .= "\x00";
} else {
$this->writeInternal($node);
}
return $this->flushBuffer($encrypt);
}
/**
* @param ProtocolNode $node
*/
/*protected function writeInternal($node)
{
$len = 1;
if ($node->getAttributes() != null) {
$len += count($node->getAttributes()) * 2;
}
if (count($node->getChildren()) > 0) {
$len += 1;
}
if (strlen($node->getData()) > 0) {
$len += 1;
}
$this->writeListStart($len);
$this->writeString($node->getTag());
$this->writeAttributes($node->getAttributes());
if (strlen($node->getData()) > 0) {
$this->writeBytes($node->getData());
}
if ($node->getChildren()) {
$this->writeListStart(count($node->getChildren()));
foreach ($node->getChildren() as $child) {
$this->writeInternal($child);
}
}
}*/
private function writeInternal($protocolTreeNode)
{
$len = 1;
if ($protocolTreeNode->getAttributes() != null) {
$len += count($protocolTreeNode->getAttributes()) * 2;
}
if (count($protocolTreeNode->getChildren()) > 0) {
$len += 1;
}
if (strlen($protocolTreeNode->getData()) > 0) {
$len += 1;
}
$this->writeListStart($len);
$this->writeString($protocolTreeNode->getTag());
$this->writeAttributes($protocolTreeNode->getAttributes());
if (strlen($protocolTreeNode->getData()) > 0) {
$this->writeBytes($protocolTreeNode->getData());
}
if ($protocolTreeNode->getChildren()) {
$this->writeListStart(count($protocolTreeNode->getChildren()));
foreach ($protocolTreeNode->getChildren() as $child) {
$this->writeInternal($child);
}
}
}
protected function parseInt24($data)
{
$ret = ord(substr($data, 0, 1)) << 16;
$ret |= ord(substr($data, 1, 1)) << 8;
$ret |= ord(substr($data, 2, 1)) << 0;
return $ret;
}
private static function packHex($n)
{
switch ($n) {
case 48:
case 49:
case 50:
case 51:
case 52:
case 53:
case 54:
case 55:
case 56:
case 57:
return $n - 48;
case 65:
case 66:
case 67:
case 68:
case 69:
case 70:
return 10 + ($n - 65);
default:
return -1;
}
}
private static function packNibble($n)
{
switch ($n) {
case 45:
case 46:
return 10 + ($n - 45);
case 48:
case 49:
case 50:
case 51:
case 52:
case 53:
case 54:
case 55:
case 56:
case 57:
return $n - 48;
default:
return -1;
}
}
protected function flushBuffer($encrypt = true)
{
$size = strlen($this->output);
$data = $this->output;
if ($this->key != null && $encrypt) {
$bsize = $this->getInt24($size);
$data = $this->key->EncodeMessage($data, $size, 0, $size);
$len = strlen($data);
$bsize[0] = chr((8 << 4) | (($len & 16711680) >> 16));
$bsize[1] = chr(($len & 65280) >> 8);
$bsize[2] = chr($len & 255);
$size = $this->parseInt24($bsize);
}
$ret = $this->writeInt24($size).$data;
$this->output = '';
return $ret;
}
protected function getInt24($length)
{
$ret = '';
$ret .= chr((($length & 0xf0000) >> 16));
$ret .= chr((($length & 0xff00) >> 8));
$ret .= chr(($length & 0xff));
return $ret;
}
protected function writeToken($token)
{
if ($token <= 255 && $token >= 0) {
$this->output .= chr($token);
} else {
throw new Exception('Invalid token.');
}
/*elseif ($token <= 0x1f4) {
$this->output .= "\xfe" . chr($token - 0xf5);
}*/
}
protected function writeJid($user, $server)
{
$this->output .= "\xfa"; // 250
if (strlen($user) > 0) {
$this->writeString($user, true);
} else {
$this->writeToken(0);
}
$this->writeString($server);
}
protected function writeInt8($v)
{
$ret = chr($v & 0xff);
return $ret;
}
protected function writeInt16($v)
{
$ret = chr(($v & 0xff00) >> 8);
$ret .= chr(($v & 0x00ff) >> 0);
return $ret;
}
protected function writeInt20($v)
{
$ret = chr((0xF0000 & $v) >> 16);
$ret .= chr((0xFF00 & $v) >> 8);
$ret .= chr(($v & 0xFF) >> 0);
return $ret;
}
private function writeInt31($v)
{
$ret = chr((0x7F000000 & $v) >> 24);
$ret .= chr((0xFF0000 & $v) >> 16);
$ret .= chr((0xFF00 & $v) >> 8);
$ret .= chr(($v & 0xFF) >> 0);
return $ret;
}
protected function writeInt24($v)
{
$ret = chr(($v & 0xff0000) >> 16);
$ret .= chr(($v & 0x00ff00) >> 8);
$ret .= chr(($v & 0x0000ff) >> 0);
return $ret;
}
protected function writeBytes($bytes, $b = false)
{
$len = strlen($bytes);
$toWrite = $bytes;
if ($len >= 0x100000) {
$this->output .= "\xfe";
$this->output .= $this->writeInt31($len);
} elseif ($len >= 0x100) {
$this->output .= "\xfd";
$this->output .= $this->writeInt20($len);
} else {
$r = '';
if ($b) {
if ($len < 128) {
$r = $this->tryPackAndWriteHeader(255, $bytes);
if ($r == '') {
$r = $this->tryPackAndWriteHeader(251, $bytes);
}
}
}
if ($r == '') {
$this->output .= "\xfc";
$this->output .= $this->writeInt8($len);
} else {
$toWrite = $r;
}
}
$this->output .= $toWrite;
}
protected function writeString($tag, $packed = false)
{
$intVal = -1;
$subdict = false;
if (TokenMap::TryGetToken($tag, $subdict, $intVal)) {
if ($subdict) {
$this->writeToken(236);
}
$this->writeToken($intVal);
return;
}
$index = strpos($tag, '@');
if ($index) {
$server = substr($tag, $index + 1);
$user = substr($tag, 0, $index);
$this->writeJid($user, $server);
} else {
if ($packed) {
$this->writeBytes($tag, true);
} else {
$this->writeBytes($tag);
}
}
}
protected function writeAttributes($attributes)
{
if ($attributes) {
foreach ($attributes as $key => $value) {
$this->writeString($key);
$this->writeString($value, true);
}
}
}
private function packByte($v, $n2)
{
switch ($v) {
case 251:
return $this->packHex($n2);
case 255:
return $this->packNibble($n2);
default:
return -1;
}
}
private function tryPackAndWriteHeader($v, $data)
{
$length = strlen($data);
if ($length >= 128) {
return '';
}
$array2 = array_fill(0, floor(($length + 1) / 2), 0);
for ($i = 0; $i < $length; $i++) {
$packByte = $this->packByte($v, ord($data[$i]));
if ($packByte == -1) {
$array2 = [];
break;
}
$n2 = floor($i / 2);
$array2[$n2] |= ($packByte << 4 * (1 - $i % 2));
}
if (count($array2) > 0) {
if ($length % 2 == 1) {
$array2[count($array2) - 1] |= 0xF;
}
$string = implode(array_map('chr', $array2));
$this->output .= chr($v);
$this->output .= $this->writeInt8($length % 2 << 7 | strlen($string));
return $string;
}
return '';
}
protected function writeListStart($len)
{
if ($len == 0) {
$this->output .= "\x00";
} elseif ($len < 256) {
$this->output .= "\xf8".chr($len);
} else {
$this->output .= "\xf9".$this->writeInt16($len);
}
}
}