Bitcoin::hash160ToAddress()   A
last analyzed

Complexity

Conditions 1
Paths 1

Size

Total Lines 8

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 0
CRAP Score 2

Importance

Changes 0
Metric Value
dl 0
loc 8
ccs 0
cts 8
cp 0
rs 10
c 0
b 0
f 0
cc 1
nc 1
nop 2
crap 2
1
<?php
2
$defflip = (!cfip()) ? exit(header('HTTP/1.1 401 Unauthorized')) : 1;
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/**
5
 * Bitcoin classes
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 *
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 * By Mike Gogulski - All rights reversed http://www.unlicense.org/ (public domain)
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 *
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 * If you find this library useful, your donation of Bitcoins to address
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 * 1E3d6EWLgwisXY2CWXDcdQQP2ivRN7e9r9 would be greatly appreciated. Thanks!
11
 *
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 * PHPDoc is available at http://code.gogulski.com/
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 *
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 * @author Mike Gogulski - http://www.nostate.com/ http://www.gogulski.com/
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 * @author theymos - theymos @ http://bitcoin.org/smf
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 */
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define("BITCOIN_ADDRESS_VERSION", "00");// this is a hex byte
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/**
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 * Bitcoin utility functions class
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 *
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 * @author theymos (functionality)
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 * @author Mike Gogulski
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 * 	http://www.gogulski.com/ http://www.nostate.com/
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 *  (encapsulation, string abstraction, PHPDoc)
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 */
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class Bitcoin {
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  /*
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   * Bitcoin utility functions by theymos
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   * Via http://www.bitcoin.org/smf/index.php?topic=1844.0
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   * hex input must be in uppercase, with no leading 0x
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   */
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  private static $hexchars = "0123456789ABCDEF";
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  private static $base58chars = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
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  /**
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   * Convert a hex string into a (big) integer
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   *
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   * @param string $hex
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   * @return int
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   * @access private
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   */
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  private function decodeHex($hex) {
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    $hex = strtoupper($hex);
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    $return = "0";
47 View Code Duplication
    for ($i = 0; $i < strlen($hex); $i++) {
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Duplication introduced by
This code seems to be duplicated across your project.

Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.

You can also find more detailed suggestions in the “Code” section of your repository.

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48
      $current = (string) strpos(self::$hexchars, $hex[$i]);
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      $return = (string) bcmul($return, "16", 0);
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      $return = (string) bcadd($return, $current, 0);
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    }
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    return $return;
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  }
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  /**
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   * Convert an integer into a hex string
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   *
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   * @param int $dec
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   * @return string
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   * @access private
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   */
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  private function encodeHex($dec) {
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    $return = "";
64 View Code Duplication
    while (bccomp($dec, 0) == 1) {
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Duplication introduced by
This code seems to be duplicated across your project.

Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.

You can also find more detailed suggestions in the “Code” section of your repository.

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65
      $dv = (string) bcdiv($dec, "16", 0);
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      $rem = (integer) bcmod($dec, "16");
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      $dec = $dv;
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      $return = $return . self::$hexchars[$rem];
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    }
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    return strrev($return);
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  }
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  /**
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   * Convert a Base58-encoded integer into the equivalent hex string representation
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   *
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   * @param string $base58
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   * @return string
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   * @access private
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   */
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  private function decodeBase58($base58) {
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    $origbase58 = $base58;
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    $return = "0";
84 View Code Duplication
    for ($i = 0; $i < strlen($base58); $i++) {
0 ignored issues
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Duplication introduced by
This code seems to be duplicated across your project.

Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.

You can also find more detailed suggestions in the “Code” section of your repository.

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85
      $current = (string) strpos(Bitcoin::$base58chars, $base58[$i]);
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      $return = (string) bcmul($return, "58", 0);
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      $return = (string) bcadd($return, $current, 0);
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    }
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    $return = self::encodeHex($return);
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    //leading zeros
93 View Code Duplication
    for ($i = 0; $i < strlen($origbase58) && $origbase58[$i] == "1"; $i++) {
0 ignored issues
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Duplication introduced by
This code seems to be duplicated across your project.

Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.

You can also find more detailed suggestions in the “Code” section of your repository.

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94
      $return = "00" . $return;
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    }
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    if (strlen($return) % 2 != 0) {
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      $return = "0" . $return;
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    }
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    return $return;
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  }
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  /**
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   * Convert a hex string representation of an integer into the equivalent Base58 representation
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   *
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   * @param string $hex
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   * @return string
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   * @access private
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   */
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  private function encodeBase58($hex) {
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    if (strlen($hex) % 2 != 0) {
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      die("encodeBase58: uneven number of hex characters");
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    }
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    $orighex = $hex;
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    $hex = self::decodeHex($hex);
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    $return = "";
119 View Code Duplication
    while (bccomp($hex, 0) == 1) {
0 ignored issues
show
Duplication introduced by
This code seems to be duplicated across your project.

Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.

You can also find more detailed suggestions in the “Code” section of your repository.

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120
      $dv = (string) bcdiv($hex, "58", 0);
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      $rem = (integer) bcmod($hex, "58");
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      $hex = $dv;
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      $return = $return . self::$base58chars[$rem];
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    }
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    $return = strrev($return);
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    //leading zeros
128 View Code Duplication
    for ($i = 0; $i < strlen($orighex) && substr($orighex, $i, 2) == "00"; $i += 2) {
0 ignored issues
show
Duplication introduced by
This code seems to be duplicated across your project.

Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.

You can also find more detailed suggestions in the “Code” section of your repository.

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129
      $return = "1" . $return;
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    }
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    return $return;
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  }
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  /**
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   * Convert a 160-bit Bitcoin hash to a Bitcoin address
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   *
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   * @author theymos
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   * @param string $hash160
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   * @param string $addressversion
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   * @return string Bitcoin address
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   * @access public
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   */
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  public static function hash160ToAddress($hash160, $addressversion = BITCOIN_ADDRESS_VERSION) {
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    $hash160 = $addressversion . $hash160;
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    $check = pack("H*", $hash160);
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    $check = hash("sha256", hash("sha256", $check, true));
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    $check = substr($check, 0, 8);
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    $hash160 = strtoupper($hash160 . $check);
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    return self::encodeBase58($hash160);
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  }
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  /**
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   * Convert a Bitcoin address to a 160-bit Bitcoin hash
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   *
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   * @author theymos
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   * @param string $addr
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   * @return string Bitcoin hash
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   * @access public
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   */
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  public static function addressToHash160($addr) {
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    $addr = self::decodeBase58($addr);
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    $addr = substr($addr, 2, strlen($addr) - 10);
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    return $addr;
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  }
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  /**
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   * Determine if a string is a valid Bitcoin address
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   *
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   * @author theymos
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   * @param string $addr String to test
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   * @param string $addressversion
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   * @return boolean
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   * @access public
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   */
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  public static function checkAddress($addr, $addressversion = BITCOIN_ADDRESS_VERSION) {
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    $addr = self::decodeBase58($addr);
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    if (strlen($addr) != 50) {
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      return false;
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    }
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    $version = substr($addr, 0, 2);
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    if (hexdec($version) > hexdec($addressversion)) {
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      return false;
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    }
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    $check = substr($addr, 0, strlen($addr) - 8);
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    $check = pack("H*", $check);
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    $check = strtoupper(hash("sha256", hash("sha256", $check, true)));
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    $check = substr($check, 0, 8);
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    return $check == substr($addr, strlen($addr) - 8);
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  }
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  /**
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   * Convert the input to its 160-bit Bitcoin hash
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   *
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   * @param string $data
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   * @return string
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   * @access private
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   */
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  private function hash160($data) {
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    $data = pack("H*", $data);
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    return strtoupper(hash("ripemd160", hash("sha256", $data, true)));
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  }
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  /**
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   * Convert a Bitcoin public key to a 160-bit Bitcoin hash
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   *
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   * @param string $pubkey
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   * @return string
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   * @access public
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   */
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  public static function pubKeyToAddress($pubkey) {
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    return self::hash160ToAddress(self::hash160($pubkey));
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  }
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  /**
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   * Remove leading "0x" from a hex value if present.
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   *
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   * @param string $string
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   * @return string
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   * @access public
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   */
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  public static function remove0x($string) {
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    if (substr($string, 0, 2) == "0x" || substr($string, 0, 2) == "0X") {
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      $string = substr($string, 2);
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    }
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    return $string;
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  }
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}
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require_once(INCLUDE_DIR . "/lib/jsonRPCClient.php");
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/**
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 * Bitcoin client class for access to a Bitcoin server via JSON-RPC-HTTP[S]
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 *
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 * Implements the methods documented at https://www.bitcoin.org/wiki/doku.php?id=api
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 *
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 * @version 0.3.19
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 * @author Mike Gogulski
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 * 	http://www.gogulski.com/ http://www.nostate.com/
240
 */
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class BitcoinClient extends jsonRPCClient {
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  /**
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   * Create a jsonrpc_client object to talk to the bitcoin server and return it,
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   * or false on failure.
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   *
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   * @param string $scheme
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   * 	"http" or "https"
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   * @param string $username
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   * 	User name to use in connection the Bitcoin server's JSON-RPC interface
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   * @param string $password
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   * 	Server password
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   * @param string $address
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   * 	Server hostname or IP address
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   * @param mixed $port
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Bug introduced by
There is no parameter named $port. Was it maybe removed?

This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function.

Consider the following example. The parameter $italy is not defined by the method finale(...).

/**
 * @param array $germany
 * @param array $island
 * @param array $italy
 */
function finale($germany, $island) {
    return "2:1";
}

The most likely cause is that the parameter was removed, but the annotation was not.

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256
   * 	Server port (string or integer)
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   * @param string $certificate_path
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   * 	Path on the local filesystem to server's PEM certificate (ignored if $scheme != "https")
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   * @param integer $debug_level
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Bug introduced by
There is no parameter named $debug_level. Was it maybe removed?

This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function.

Consider the following example. The parameter $italy is not defined by the method finale(...).

/**
 * @param array $germany
 * @param array $island
 * @param array $italy
 */
function finale($germany, $island) {
    return "2:1";
}

The most likely cause is that the parameter was removed, but the annotation was not.

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260
   * 	0 (default) = no debugging;
261
   * 	1 = echo JSON-RPC messages received to stdout;
262
   * 	2 = log transmitted messages also
263
   * @return jsonrpc_client
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Comprehensibility Best Practice introduced by
Adding a @return annotation to constructors is generally not recommended as a constructor does not have a meaningful return value.

Adding a @return annotation to a constructor is not recommended, since a constructor does not have a meaningful return value.

Please refer to the PHP core documentation on constructors.

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264
   * @access public
265
   * @throws BitcoinClientException
266
   */
267
  public function __construct($scheme, $username, $password, $address = "localhost", $certificate_path = '', $debug = false) {
268
    $scheme = strtolower($scheme);
269
    if ($scheme != "http" && $scheme != "https")
270
      throw new Exception("Scheme must be http or https");
271
    if (empty($username))
272
      throw new Exception("Username must be non-blank");
273
    if (empty($password))
274
      throw new Exception("Password must be non-blank");
275
    if (!empty($certificate_path) && !is_readable($certificate_path))
276
      throw new Exception("Certificate file " . $certificate_path . " is not readable");
277
    $uri = $scheme . "://" . $username . ":" . $password . "@" . $address . "/";
278
    parent::__construct($uri, $debug);
279
  }
280
281
  /**
282
   * Test if the connection to the Bitcoin JSON-RPC server is working
283
   *
284
   * The check is done by calling the server's getinfo() method and checking
285
   * for a fault.
286
   *
287
   * To turn code compatible with BTC >= 0.16, getmininginfo() method used instead of getinfo()
288
   *
289
   * @return mixed boolean TRUE if successful, or a fault string otherwise
290
   * @access public
291
   * @throws none
292
   */
293
  public function can_connect() {
294
    try {
295
      $r = $this->getmininginfo();
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Unused Code introduced by
$r is not used, you could remove the assignment.

This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.

$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}

Both the $myVar assignment in line 1 and the $higher assignment in line 2 are dead. The first because $myVar is never used and the second because $higher is always overwritten for every possible time line.

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296
    } catch (Exception $e) {
297
      return $e->getMessage();
298
    }
299
    return true;
300
  }
301
302
  public function validateaddress($coin_address) {
303
    try {
304
      $aStatus = parent::validateaddress($coin_address);
305
      if (!$aStatus['isvalid']) {
306
        return false;
307
      }
308
    } catch (Exception $e) {
309
      return false;
310
    }
311
    return true;
312
  }
313
314
  public function is_testnet() {
315
    try {
316
      $r = parent::getinfo();
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Comprehensibility Bug introduced by
It seems like you call parent on a different method (getinfo() instead of is_testnet()). Are you sure this is correct? If so, you might want to change this to $this->getinfo().

This check looks for a call to a parent method whose name is different than the method from which it is called.

Consider the following code:

class Daddy
{
    protected function getFirstName()
    {
        return "Eidur";
    }

    protected function getSurName()
    {
        return "Gudjohnsen";
    }
}

class Son
{
    public function getFirstName()
    {
        return parent::getSurname();
    }
}

The getFirstName() method in the Son calls the wrong method in the parent class.

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317
      if ($r['testnet']) {
318
        return true;
319
      }
320
    } catch (Exception $e) {
321
      return false;
322
    }
323
    return false;
324
  }
325
}
326