include/classes/bitcoin.class.php
<?php
$defflip = (!cfip()) ? exit(header('HTTP/1.1 401 Unauthorized')) : 1;
/**
* Bitcoin classes
*
* By Mike Gogulski - All rights reversed http://www.unlicense.org/ (public domain)
*
* If you find this library useful, your donation of Bitcoins to address
* 1E3d6EWLgwisXY2CWXDcdQQP2ivRN7e9r9 would be greatly appreciated. Thanks!
*
* PHPDoc is available at http://code.gogulski.com/
*
* @author Mike Gogulski - http://www.nostate.com/ http://www.gogulski.com/
* @author theymos - theymos @ http://bitcoin.org/smf
*/
define("BITCOIN_ADDRESS_VERSION", "00");// this is a hex byte
/**
* Bitcoin utility functions class
*
* @author theymos (functionality)
* @author Mike Gogulski
* http://www.gogulski.com/ http://www.nostate.com/
* (encapsulation, string abstraction, PHPDoc)
*/
class Bitcoin {
/*
* Bitcoin utility functions by theymos
* Via http://www.bitcoin.org/smf/index.php?topic=1844.0
* hex input must be in uppercase, with no leading 0x
*/
private static $hexchars = "0123456789ABCDEF";
private static $base58chars = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
/**
* Convert a hex string into a (big) integer
*
* @param string $hex
* @return int
* @access private
*/
private function decodeHex($hex) {
$hex = strtoupper($hex);
$return = "0";
for ($i = 0; $i < strlen($hex); $i++) {
$current = (string) strpos(self::$hexchars, $hex[$i]);
$return = (string) bcmul($return, "16", 0);
$return = (string) bcadd($return, $current, 0);
}
return $return;
}
/**
* Convert an integer into a hex string
*
* @param int $dec
* @return string
* @access private
*/
private function encodeHex($dec) {
$return = "";
while (bccomp($dec, 0) == 1) {
$dv = (string) bcdiv($dec, "16", 0);
$rem = (integer) bcmod($dec, "16");
$dec = $dv;
$return = $return . self::$hexchars[$rem];
}
return strrev($return);
}
/**
* Convert a Base58-encoded integer into the equivalent hex string representation
*
* @param string $base58
* @return string
* @access private
*/
private function decodeBase58($base58) {
$origbase58 = $base58;
$return = "0";
for ($i = 0; $i < strlen($base58); $i++) {
$current = (string) strpos(Bitcoin::$base58chars, $base58[$i]);
$return = (string) bcmul($return, "58", 0);
$return = (string) bcadd($return, $current, 0);
}
$return = self::encodeHex($return);
//leading zeros
for ($i = 0; $i < strlen($origbase58) && $origbase58[$i] == "1"; $i++) {
$return = "00" . $return;
}
if (strlen($return) % 2 != 0) {
$return = "0" . $return;
}
return $return;
}
/**
* Convert a hex string representation of an integer into the equivalent Base58 representation
*
* @param string $hex
* @return string
* @access private
*/
private function encodeBase58($hex) {
if (strlen($hex) % 2 != 0) {
die("encodeBase58: uneven number of hex characters");
}
$orighex = $hex;
$hex = self::decodeHex($hex);
$return = "";
while (bccomp($hex, 0) == 1) {
$dv = (string) bcdiv($hex, "58", 0);
$rem = (integer) bcmod($hex, "58");
$hex = $dv;
$return = $return . self::$base58chars[$rem];
}
$return = strrev($return);
//leading zeros
for ($i = 0; $i < strlen($orighex) && substr($orighex, $i, 2) == "00"; $i += 2) {
$return = "1" . $return;
}
return $return;
}
/**
* Convert a 160-bit Bitcoin hash to a Bitcoin address
*
* @author theymos
* @param string $hash160
* @param string $addressversion
* @return string Bitcoin address
* @access public
*/
public static function hash160ToAddress($hash160, $addressversion = BITCOIN_ADDRESS_VERSION) {
$hash160 = $addressversion . $hash160;
$check = pack("H*", $hash160);
$check = hash("sha256", hash("sha256", $check, true));
$check = substr($check, 0, 8);
$hash160 = strtoupper($hash160 . $check);
return self::encodeBase58($hash160);
}
/**
* Convert a Bitcoin address to a 160-bit Bitcoin hash
*
* @author theymos
* @param string $addr
* @return string Bitcoin hash
* @access public
*/
public static function addressToHash160($addr) {
$addr = self::decodeBase58($addr);
$addr = substr($addr, 2, strlen($addr) - 10);
return $addr;
}
/**
* Determine if a string is a valid Bitcoin address
*
* @author theymos
* @param string $addr String to test
* @param string $addressversion
* @return boolean
* @access public
*/
public static function checkAddress($addr, $addressversion = BITCOIN_ADDRESS_VERSION) {
$addr = self::decodeBase58($addr);
if (strlen($addr) != 50) {
return false;
}
$version = substr($addr, 0, 2);
if (hexdec($version) > hexdec($addressversion)) {
return false;
}
$check = substr($addr, 0, strlen($addr) - 8);
$check = pack("H*", $check);
$check = strtoupper(hash("sha256", hash("sha256", $check, true)));
$check = substr($check, 0, 8);
return $check == substr($addr, strlen($addr) - 8);
}
/**
* Convert the input to its 160-bit Bitcoin hash
*
* @param string $data
* @return string
* @access private
*/
private function hash160($data) {
$data = pack("H*", $data);
return strtoupper(hash("ripemd160", hash("sha256", $data, true)));
}
/**
* Convert a Bitcoin public key to a 160-bit Bitcoin hash
*
* @param string $pubkey
* @return string
* @access public
*/
public static function pubKeyToAddress($pubkey) {
return self::hash160ToAddress(self::hash160($pubkey));
}
/**
* Remove leading "0x" from a hex value if present.
*
* @param string $string
* @return string
* @access public
*/
public static function remove0x($string) {
if (substr($string, 0, 2) == "0x" || substr($string, 0, 2) == "0X") {
$string = substr($string, 2);
}
return $string;
}
}
require_once(INCLUDE_DIR . "/lib/jsonRPCClient.php");
/**
* Bitcoin client class for access to a Bitcoin server via JSON-RPC-HTTP[S]
*
* Implements the methods documented at https://www.bitcoin.org/wiki/doku.php?id=api
*
* @version 0.3.19
* @author Mike Gogulski
* http://www.gogulski.com/ http://www.nostate.com/
*/
class BitcoinClient extends jsonRPCClient {
/**
* Create a jsonrpc_client object to talk to the bitcoin server and return it,
* or false on failure.
*
* @param string $scheme
* "http" or "https"
* @param string $username
* User name to use in connection the Bitcoin server's JSON-RPC interface
* @param string $password
* Server password
* @param string $address
* Server hostname or IP address
* @param mixed $port
* Server port (string or integer)
* @param string $certificate_path
* Path on the local filesystem to server's PEM certificate (ignored if $scheme != "https")
* @param integer $debug_level
* 0 (default) = no debugging;
* 1 = echo JSON-RPC messages received to stdout;
* 2 = log transmitted messages also
* @return jsonrpc_client
* @access public
* @throws BitcoinClientException
*/
public function __construct($scheme, $username, $password, $address = "localhost", $certificate_path = '', $debug = false) {
$scheme = strtolower($scheme);
if ($scheme != "http" && $scheme != "https")
throw new Exception("Scheme must be http or https");
if (empty($username))
throw new Exception("Username must be non-blank");
if (empty($password))
throw new Exception("Password must be non-blank");
if (!empty($certificate_path) && !is_readable($certificate_path))
throw new Exception("Certificate file " . $certificate_path . " is not readable");
$uri = $scheme . "://" . $username . ":" . $password . "@" . $address . "/";
parent::__construct($uri, $debug);
}
/**
* Test if the connection to the Bitcoin JSON-RPC server is working
*
* The check is done by calling the server's getinfo() method and checking
* for a fault.
*
* To turn code compatible with BTC >= 0.16, getmininginfo() method used instead of getinfo()
*
* @return mixed boolean TRUE if successful, or a fault string otherwise
* @access public
* @throws none
*/
public function can_connect() {
try {
$r = $this->getmininginfo();
} catch (Exception $e) {
return $e->getMessage();
}
return true;
}
public function validateaddress($coin_address) {
try {
$aStatus = parent::validateaddress($coin_address);
if (!$aStatus['isvalid']) {
return false;
}
} catch (Exception $e) {
return false;
}
return true;
}
public function is_testnet() {
try {
$r = parent::getinfo();
if ($r['testnet']) {
return true;
}
} catch (Exception $e) {
return false;
}
return false;
}
}