Update Horizen (ZEN)

assets/src/main/java/bisq/asset/coins/Horizen.java

@@ -0,0 +1,69 @@
+/*
+ * This file is part of Bisq.
+ *
+ * Bisq is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * Bisq is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Bisq. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package bisq.asset.coins;
+
+import bisq.asset.AddressValidationResult;
+import bisq.asset.AddressValidator;
+import bisq.asset.Coin;
+
+import org.bitcoinj.core.AddressFormatException;
+import org.bitcoinj.core.Base58;
+
+public class Horizen extends Coin {
+
+    public Horizen() {
+        super("Horizen", "ZEN", new HorizenAddressValidator());
+    }
+
+
+    public static class HorizenAddressValidator implements AddressValidator {
+
+        @Override
+        public AddressValidationResult validate(String address) {
+            byte[] byteAddress;
+            try {
+                // Get the non Base58 form of the address and the bytecode of the first two bytes
+                byteAddress = Base58.decodeChecked(address);
+            } catch (AddressFormatException e) {
+                // Unhandled Exception (probably a checksum error)
+                return AddressValidationResult.invalidAddress(e);
+            }
+            int version0 = byteAddress[0] & 0xFF;
+            int version1 = byteAddress[1] & 0xFF;
+
+            // We only support public ("zn" (0x20,0x89), "t1" (0x1C,0xB8))
+            // and multisig ("zs" (0x20,0x96), "t3" (0x1C,0xBD)) addresses
+
+            // Fail for private addresses
+            if (version0 == 0x16 && version1 == 0x9A)
+                // Address starts with "zc"
+                return AddressValidationResult.invalidAddress("", "validation.altcoin.zAddressesNotSupported");
+
+            if (version0 == 0x1C && (version1 == 0xB8 || version1 == 0xBD))
+                // "t1" or "t3" address
+                return AddressValidationResult.validAddress();
+
+            if (version0 == 0x20 && (version1 == 0x89 || version1 == 0x96))
+                // "zn" or "zs" address
+                return AddressValidationResult.validAddress();
+
+            // Unknown Type
+            return AddressValidationResult.invalidStructure();
+        }
+    }
+}

assets/src/test/java/bisq/asset/coins/HorizenTest.java

@@ -0,0 +1,45 @@
+/*
+ * This file is part of Bisq.
+ *
+ * Bisq is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * Bisq is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Bisq. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package bisq.asset.coins;
+
+import bisq.asset.AbstractAssetTest;
+
+import org.junit.Test;
+
+public class HorizenTest extends AbstractAssetTest {
+
+    public HorizenTest() {
+        super(new Horizen());
+    }
+
+    @Test
+    public void testValidAddresses() {
+        assertValidAddress("znk62Ey7ptTyHgYLaLDTEwhLF6uN1DXTBfa");
+        assertValidAddress("znTqzi5rTXf6KJnX5tLaC5CMGHfeWJwy1c7");
+        assertValidAddress("t1V9h2P9n4sYg629Xn4jVDPySJJxGmPb1HK");
+        assertValidAddress("t3Ut4KUq2ZSMTPNE67pBU5LqYCi2q36KpXQ");
+    }
+
+    @Test
+    public void testInvalidAddresses() {
+        assertInvalidAddress("zcKffBrza1cirFY47aKvXiV411NZMscf7zUY5bD1HwvkoQvKHgpxLYUHtMCLqBAeif1VwHmMjrMAKNrdCknCVqCzRNizHUq");
+        assertInvalidAddress("AFTqzi5rTXf6KJnX5tLaC5CMGHfeWJwy1c7");
+        assertInvalidAddress("zig-zag");
+        assertInvalidAddress("0123456789");
+    }
+}