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<?php |
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namespace BitWasp\Bitcoin\Network; |
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use BitWasp\Bitcoin\Exceptions\InvalidNetworkParameter; |
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use BitWasp\Bitcoin\Exceptions\MissingBase58Prefix; |
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use BitWasp\Bitcoin\Exceptions\MissingBech32Prefix; |
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use BitWasp\Bitcoin\Exceptions\MissingBip32Prefix; |
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use BitWasp\Bitcoin\Exceptions\MissingNetworkParameter; |
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class Network implements NetworkInterface |
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{ |
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const BECH32_PREFIX_SEGWIT = "segwit"; |
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const BASE58_ADDRESS_P2PKH = "p2pkh"; |
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const BASE58_ADDRESS_P2SH = "p2sh"; |
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const BASE58_WIF = "wif"; |
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const BIP32_PREFIX_XPUB = "xpub"; |
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const BIP32_PREFIX_XPRV = "xprv"; |
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/** |
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* @var array map of base58 address type to byte |
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*/ |
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protected $base58PrefixMap = []; |
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/** |
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* @var array map of bech32 address type to HRP |
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*/ |
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protected $bech32PrefixMap = []; |
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/** |
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* @var array map of bip32 type to bytes |
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*/ |
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protected $bip32PrefixMap = []; |
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/** |
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* @var array map of bip32 key type to script type |
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*/ |
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protected $bip32ScriptTypeMap = []; |
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/** |
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* @var string - message prefix for bitcoin signed messages |
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*/ |
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protected $signedMessagePrefix; |
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/** |
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* @var string - 4 bytes for p2p magic |
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*/ |
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protected $p2pMagic; |
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/** |
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* @param string $field - name of field being validated |
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* @param mixed $value - we check this value |
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* @param int $length - length we require |
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* @throws InvalidNetworkParameter |
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*/ |
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private function validateHexString($field, $value, $length) |
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{ |
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if (!is_string($value) || strlen($value) !== 2 * $length) { |
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throw new InvalidNetworkParameter("{$field} must be a {$length} byte hex string"); |
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} |
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if (!ctype_xdigit($value)) { |
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throw new InvalidNetworkParameter("{$field} prefix must be a valid hex string"); |
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} |
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} |
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/** |
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* Network constructor. |
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* @throws InvalidNetworkParameter |
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*/ |
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public function __construct() |
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{ |
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if (null !== $this->p2pMagic) { |
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$this->validateHexString("P2P magic", $this->p2pMagic, 4); |
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} |
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foreach ($this->base58PrefixMap as $type => $byte) { |
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$this->validateHexString("{$type} base58 prefix", $byte, 1); |
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} |
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foreach ($this->bip32PrefixMap as $type => $bytes) { |
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$this->validateHexString("{$type} bip32 prefix", $bytes, 4); |
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} |
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if (count($this->bip32ScriptTypeMap) !== count($this->bip32PrefixMap)) { |
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throw new InvalidNetworkParameter("BIP32 prefixes not configured correctly"); |
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} |
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} |
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/** |
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* @param string $prefixType |
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* @return bool |
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*/ |
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protected function hasBase58Prefix($prefixType) |
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{ |
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return array_key_exists($prefixType, $this->base58PrefixMap); |
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} |
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/** |
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* @param string $prefixType |
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* @return string |
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* @throws MissingBase58Prefix |
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*/ |
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protected function getBase58Prefix($prefixType) |
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{ |
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if (!$this->hasBase58Prefix($prefixType)) { |
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throw new MissingBase58Prefix(); |
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} |
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return $this->base58PrefixMap[$prefixType]; |
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} |
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/** |
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* @param string $prefixType |
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* @return bool |
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*/ |
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protected function hasBech32Prefix($prefixType) |
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{ |
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return array_key_exists($prefixType, $this->bech32PrefixMap); |
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} |
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/** |
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* @param string $prefixType |
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* @return string |
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* @throws MissingBech32Prefix |
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*/ |
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protected function getBech32Prefix($prefixType) |
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{ |
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if (!$this->hasBech32Prefix($prefixType)) { |
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throw new MissingBech32Prefix(); |
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} |
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return $this->bech32PrefixMap[$prefixType]; |
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} |
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/** |
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* @param string $prefixType |
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* @return bool |
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*/ |
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protected function hasBip32Prefix($prefixType) |
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{ |
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return array_key_exists($prefixType, $this->bip32PrefixMap); |
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} |
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/** |
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* @param $prefixType |
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* @return mixed |
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* @throws MissingBip32Prefix |
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*/ |
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protected function getBip32Prefix($prefixType) |
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{ |
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if (!$this->hasBip32Prefix($prefixType)) { |
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throw new MissingBip32Prefix(); |
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} |
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return $this->bip32PrefixMap[$prefixType]; |
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} |
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/** |
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* @return string |
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* @throws MissingNetworkParameter |
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* @see NetworkInterface::getSignedMessageMagic |
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*/ |
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public function getSignedMessageMagic() |
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{ |
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if (null === $this->signedMessagePrefix) { |
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throw new MissingNetworkParameter("Missing magic string for signed message"); |
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} |
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return $this->signedMessagePrefix; |
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} |
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/** |
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* @return string |
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* @throws MissingNetworkParameter |
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* @see NetworkInterface::getNetMagicBytes() |
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*/ |
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public function getNetMagicBytes() |
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{ |
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if (null === $this->p2pMagic) { |
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throw new MissingNetworkParameter("Missing network magic bytes"); |
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} |
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return $this->p2pMagic; |
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} |
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/** |
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* @return string |
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* @throws MissingBase58Prefix |
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*/ |
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public function getPrivByte() |
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{ |
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return $this->getBase58Prefix(self::BASE58_WIF); |
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} |
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/** |
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* @return string |
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* @throws MissingBase58Prefix |
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* @see NetworkInterface::getAddressByte() |
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*/ |
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public function getAddressByte() |
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{ |
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return $this->getBase58Prefix(self::BASE58_ADDRESS_P2PKH); |
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} |
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/** |
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* @return string |
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* @throws MissingBase58Prefix |
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* @see NetworkInterface::getP2shByte() |
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*/ |
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public function getP2shByte() |
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{ |
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return $this->getBase58Prefix(self::BASE58_ADDRESS_P2SH); |
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} |
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/** |
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* @return mixed|string |
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* @throws MissingBip32Prefix |
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* @see NetworkInterface::getHDPubByte() |
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*/ |
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public function getHDPubByte() |
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{ |
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return $this->getBip32Prefix(self::BIP32_PREFIX_XPUB); |
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} |
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/** |
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* @return mixed|string |
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* @throws MissingBip32Prefix |
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* @see NetworkInterface::getHDPrivByte() |
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*/ |
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public function getHDPrivByte() |
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{ |
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return $this->getBip32Prefix(self::BIP32_PREFIX_XPRV); |
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} |
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/** |
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* @return string |
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* @throws MissingBech32Prefix |
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* @see NetworkInterface::getSegwitBech32Prefix() |
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*/ |
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public function getSegwitBech32Prefix() |
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{ |
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return $this->getBech32Prefix(self::BECH32_PREFIX_SEGWIT); |
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} |
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} |
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Bit-Wasp /
bitcoin-php
