/src/main/java/info/blockchain/wallet/util/FormatsUtil.java

https://gitlab.com/admin-github-cloud/My-Wallet-V3-jar · Java · 209 lines · 163 code · 43 blank · 3 comment · 22 complexity · 352a9d335f9c58db7a930821dbb23eba MD5 · raw file 

    

  1. package info.blockchain.wallet.util;
    2. 

  2. 

  3. import java.util.regex.Pattern;
    4. 

  4. import java.nio.ByteBuffer;
    5. 

  5. 

  6. import org.bitcoinj.params.MainNetParams;
    7. 

  7. import org.bitcoinj.uri.BitcoinURI;
    8. 

  8. import org.bitcoinj.uri.BitcoinURIParseException;
    9. 

  9. import org.bitcoinj.core.Address;
    10. 

  10. import org.bitcoinj.core.AddressFormatException;
    11. 

  11. import org.bitcoinj.core.Base58;
    12. 

  12. import org.bitcoinj.params.MainNetParams;
    13. 

  13. import org.bitcoinj.core.WrongNetworkException;
    14. 

  14. 

  15. public class FormatsUtil {
    16. 

  16. 

  17. 	private Pattern emailPattern = Pattern.compile("(?:(?:\\r\\n)?[ \\t])*(?:(?:(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*))*@(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*))*|(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*)*\\<(?:(?:\\r\\n)?[ \\t])*(?:@(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*))*(?:,@(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*))*)*:(?:(?:\\r\\n)?[ \\t])*)?(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*))*@(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*))*\\>(?:(?:\\r\\n)?[ \\t])*)|(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*)*:(?:(?:\\r\\n)?[ \\t])*(?:(?:(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*))*@(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*))*|(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*)*\\<(?:(?:\\r\\n)?[ \\t])*(?:@(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*))*(?:,@(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*))*)*:(?:(?:\\r\\n)?[ \\t])*)?(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*))*@(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*))*\\>(?:(?:\\r\\n)?[ \\t])*)(?:,\\s*(?:(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*))*@(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*))*|(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*)*\\<(?:(?:\\r\\n)?[ \\t])*(?:@(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*))*(?:,@(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*))*)*:(?:(?:\\r\\n)?[ \\t])*)?(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\"(?:[^\\\"\\r\\\\]|\\\\.|(?:(?:\\r\\n)?[ \\t]))*\"(?:(?:\\r\\n)?[ \\t])*))*@(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*)(?:\\.(?:(?:\\r\\n)?[ \\t])*(?:[^()<>@,;:\\\\\".\\[\\] \\000-\\031]+(?:(?:(?:\\r\\n)?[ \\t])+|\\Z|(?=[\\[\"()<>@,;:\\\\\".\\[\\]]))|\\[([^\\[\\]\\r\\\\]|\\\\.)*\\](?:(?:\\r\\n)?[ \\t])*))*\\>(?:(?:\\r\\n)?[ \\t])*))*)?;\\s*)");
    18. 

  18. 	private Pattern phonePattern = Pattern.compile("(\\+[1-9]{1}[0-9]{1,2}+|00[1-9]{1}[0-9]{1,2}+)[\\(\\)\\.\\-\\s\\d]{6,16}");
    19. 

  19. 

  20. 	private static FormatsUtil instance = null;
    21. 

  21. 

  22. 	private FormatsUtil() { ; }
    23. 

  23. 

  24. 	public static FormatsUtil getInstance() {
    25. 

  25. 

  26. 		if(instance == null) {
    27. 

  27. 			instance = new FormatsUtil();
    28. 

  28. 		}
    29. 

  29. 

  30. 		return instance;
    31. 

  31. 	}
    32. 

  32. 

  33. 	public String validateBitcoinAddress(final String address) {
    34. 

  34. 

  35. 		if(isValidBitcoinAddress(address)) {
    36. 

  36. 			return address;
    37. 

  37. 		}
    38. 

  38. 		else {
    39. 

  39. 			String addr = uri2BitcoinAddress(address);
    40. 

  40. 			if(addr != null) {
    41. 

  41. 				return addr;
    42. 

  42. 			}
    43. 

  43. 			else {
    44. 

  44. 				return null;
    45. 

  45. 			}
    46. 

  46. 		}
    47. 

  47. 	}
    48. 

  48. 

  49. 	public boolean isBitcoinUri(final String s) {
    50. 

  50. 

  51. 		boolean ret = false;
    52. 

  52. 		BitcoinURI uri = null;
    53. 

  53. 

  54. 		try {
    55. 

  55. 			uri = new BitcoinURI(s);
    56. 

  56. 			ret = true;
    57. 

  57. 		}
    58. 

  58. 		catch(BitcoinURIParseException bupe) {
    59. 

  59. 			ret = false;
    60. 

  60. 		}
    61. 

  61. 

  62. 		return ret;
    63. 

  63. 	}
    64. 

  64. 

  65. 	public String getBitcoinUri(final String s) {
    66. 

  66. 

  67. 		String ret = null;
    68. 

  68. 		BitcoinURI uri = null;
    69. 

  69. 

  70. 		try {
    71. 

  71. 			uri = new BitcoinURI(s);
    72. 

  72. 			ret = uri.toString();
    73. 

  73. 		}
    74. 

  74. 		catch(BitcoinURIParseException bupe) {
    75. 

  75. 			ret = null;
    76. 

  76. 		}
    77. 

  77. 

  78. 		return ret;
    79. 

  79. 	}
    80. 

  80. 

  81. 	public String getBitcoinAddress(final String s) {
    82. 

  82. 

  83. 		String ret = null;
    84. 

  84. 		BitcoinURI uri = null;
    85. 

  85. 

  86. 		try {
    87. 

  87. 			uri = new BitcoinURI(s);
    88. 

  88. 			ret = uri.getAddress().toString();
    89. 

  89. 		}
    90. 

  90. 		catch(BitcoinURIParseException bupe) {
    91. 

  91. 			ret = null;
    92. 

  92. 		}
    93. 

  93. 

  94. 		return ret;
    95. 

  95. 	}
    96. 

  96. 

  97. 	public String getBitcoinAmount(final String s) {
    98. 

  98. 

  99. 		String ret = null;
    100. 

  100. 		BitcoinURI uri = null;
    101. 

  101. 

  102. 		try {
    103. 

  103. 			uri = new BitcoinURI(s);
    104. 

  104. 			if(uri.getAmount() != null) {
    105. 

  105. 				ret = uri.getAmount().toString();
    106. 

  106. 			}
    107. 

  107. 			else {
    108. 

  108. 				ret = "0.0000";
    109. 

  109. 			}
    110. 

  110. 		}
    111. 

  111. 		catch(BitcoinURIParseException bupe) {
    112. 

  112. 			ret = null;
    113. 

  113. 		}
    114. 

  114. 

  115. 		return ret;
    116. 

  116. 	}
    117. 

  117. 

  118. 	public boolean isValidBitcoinAddress(final String address) {
    119. 

  119. 

  120. 		boolean ret = false;
    121. 

  121. 		Address addr = null;
    122. 

  122. 

  123. 		try {
    124. 

  124. 			addr = new Address(MainNetParams.get(), address);
    125. 

  125. 			if(addr != null) {
    126. 

  126. 				ret = true;
    127. 

  127. 			}
    128. 

  128. 		}
    129. 

  129. 		catch(WrongNetworkException wne) {
    130. 

  130. 			ret = false;
    131. 

  131. 		}
    132. 

  132. 		catch(AddressFormatException afe) {
    133. 

  133. 			ret = false;
    134. 

  134. 		}
    135. 

  135. 

  136. 		return ret;
    137. 

  137. 	}
    138. 

  138. 

  139. 	public boolean isValidEmailAddress(final String address) {
    140. 

  140. 		if(emailPattern.matcher(address).matches()) {
    141. 

  141. 			return true;
    142. 

  142. 		}
    143. 

  143. 		else {
    144. 

  144. 			return false;
    145. 

  145. 		}
    146. 

  146. 	}
    147. 

  147. 

  148. 	public boolean isValidMobileNumber(final String mobile) {
    149. 

  149. 		if(phonePattern.matcher(mobile).matches()) {
    150. 

  150. 			return true;
    151. 

  151. 		}
    152. 

  152. 		else {
    153. 

  153. 			return false;
    154. 

  154. 		}
    155. 

  155. 	}
    156. 

  156. 

  157. 	private String uri2BitcoinAddress(final String address) {
    158. 

  158. 

  159. 		String ret = null;
    160. 

  160. 		BitcoinURI uri = null;
    161. 

  161. 

  162. 		try {
    163. 

  163. 			uri = new BitcoinURI(address);
    164. 

  164. 			ret = uri.getAddress().toString();
    165. 

  165. 		}
    166. 

  166. 		catch(BitcoinURIParseException bupe) {
    167. 

  167. 			ret = null;
    168. 

  168. 		}
    169. 

  169. 

  170. 		return ret;
    171. 

  171. 	}
    172. 

  172. 

  173. 	public boolean isValidXpub(String xpub){
    174. 

  174. 

  175. 			try {
    176. 

  176. 					byte[] xpubBytes = Base58.decodeChecked(xpub);
    177. 

  177. 

  178. 					ByteBuffer byteBuffer = ByteBuffer.wrap(xpubBytes);
    179. 

  179. 					if(byteBuffer.getInt() != 0x0488B21E)   {
    180. 

  180. 							throw new AddressFormatException("invalid version: " + xpub);
    181. 

  181. 					}
    182. 

  182. 					else	{
    183. 

  183. 

  184. 							byte[] chain = new byte[32];
    185. 

  185. 							byte[] pub = new byte[33];
    186. 

  186. 							// depth:
    187. 

  187. 							byteBuffer.get();
    188. 

  188. 							// parent fingerprint:
    189. 

  189. 							byteBuffer.getInt();
    190. 

  190. 							// child no.
    191. 

  191. 							byteBuffer.getInt();
    192. 

  192. 							byteBuffer.get(chain);
    193. 

  193. 							byteBuffer.get(pub);
    194. 

  194. 

  195. 							ByteBuffer pubBytes = ByteBuffer.wrap(pub);
    196. 

  196. 							int firstByte = pubBytes.get();
    197. 

  197. 							if(firstByte == 0x02 || firstByte == 0x03){
    198. 

  198. 									return true;
    199. 

  199. 							}else{
    200. 

  200. 									throw new AddressFormatException("invalid format: " + xpub);
    201. 

  201. 							}
    202. 

  202. 					}
    203. 

  203. 			}
    204. 

  204. 			catch(Exception e)	{
    205. 

  205. 					return false;
    206. 

  206. 			}
    207. 

  207. 	}
    208. 

  208. 

  209. }
    210.