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<?php |
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namespace TraderBot\Service; |
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use Fabiang\Xmpp\Options; |
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6
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7
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class SocksProxy extends SocketClient |
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{ |
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/** @var string */ |
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private $realAddress; |
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/** @var string */ |
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private $username; |
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/** @var string */ |
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private $password; |
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public function __construct(Options $options) |
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{ |
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$contextOptions = $options->getContextOptions(); |
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$contextOptions['ssl']['verify_peer_name'] = false; |
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$addr = explode('@', ltrim('tcp://', $options->getSocksProxyAddress())); |
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if (count($addr) > 1) { |
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$socksAddr = $addr[1]; |
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list($this->username, $this->password) = explode(':', $addr[0]); |
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} else { |
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$socksAddr = $addr[0]; |
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} |
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parent::__construct($socksAddr, $contextOptions); |
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$this->realAddress = ltrim('tcp://', $options->getAddress()); |
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} |
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public function connect($timeout = 30, $persistent = false) |
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{ |
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parent::connect($timeout, $persistent); |
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$methods = chr(0); |
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if ($this->username) { |
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$methods .= chr(2); |
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} |
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$this->write(chr(5).chr(strlen($methods)).$methods); |
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$version = ord($this->read(1)); |
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$method = ord($this->read(1)); |
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if ($version !== 5) { |
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throw new \Exception("Wrong SOCKS5 version: $version"); |
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} |
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if ($method === 2) { |
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$this->write(chr(1).chr(strlen($this->username)).$this->username.chr(strlen($this->password)).$this->password); |
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$version = ord($this->read(1)); |
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if ($version !== 1) { |
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throw new \Exception("Wrong authorized SOCKS version: $version"); |
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} |
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$result = ord($this->read(1)); |
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if ($result !== 0) { |
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throw new \Exception("Wrong authorization status: $result"); |
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} |
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} elseif ($method !== 0) { |
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throw new \Exception("Wrong method: $method"); |
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} |
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list($address, $port) = explode(':', $this->realAddress); |
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$payload = pack('C5', 0x05, 0x01, 0x00, 0x03, strlen($address)).$address; |
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$payload .= pack('n', $port); |
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$this->write($payload); |
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65
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$version = ord($this->read(1)); |
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if ($version !== 5) { |
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throw new \Exception("Wrong SOCKS5 version after CONNECT: $version"); |
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} |
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$rep = ord($this->read(1)); |
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if ($rep !== 0) { |
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throw new \Exception("Wrong SOCKS5 rep after CONNECT: $rep"); |
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} |
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$rsv = ord($this->read(1)); |
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if ($rsv !== 0) { |
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throw new \Exception("Wrong socks5 final RSV after CONNECT: $rsv"); |
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} |
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switch (ord($this->read(1))) { |
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case 1: |
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$ip = inet_ntop($this->read(4)); |
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80
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break; |
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case 4: |
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$ip = inet_ntop($this->read(16)); |
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83
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break; |
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84
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case 3: |
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$ip = $this->read(ord($this->read(1))); |
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86
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break; |
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87
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} |
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$port = unpack('n', $this->read(2))[1]; |
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89
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} |
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90
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} |
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91
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fabiang /
xmpp
Loading history...
This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVarassignment in line 1 and the$higherassignment in line 2 are dead. The first because$myVaris never used and the second because$higheris always overwritten for every possible time line.