Fix parsing of empty labels and messages, and parsing of labels and messages with an unescaped equals sign in their value.

core/src/main/java/com/google/bitcoin/uri/BitcoinURI.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012 the original author or authors.
+ * Copyright 2012, 2014 the original author or authors.
  * 
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -32,6 +32,7 @@ import java.net.URI;
 import java.net.URISyntaxException;
 import java.net.URLDecoder;
 import java.util.LinkedHashMap;
+import java.util.Locale;
 import java.util.Map;
 
 import static com.google.common.base.Preconditions.checkNotNull;
@@ -192,14 +193,15 @@ public class BitcoinURI {
     private void parseParameters(@Nullable NetworkParameters params, String addressToken, String[] nameValuePairTokens) throws BitcoinURIParseException {
         // Attempt to decode the rest of the tokens into a parameter map.
         for (String nameValuePairToken : nameValuePairTokens) {
-            String[] tokens = nameValuePairToken.split("=");
+            final int sepIndex = nameValuePairToken.indexOf('=');
-            if (tokens.length != 2 || "".equals(tokens[0])) {
+            if (sepIndex == -1)
-                throw new BitcoinURIParseException("Malformed Bitcoin URI - cannot parse name value pair '" +
+                throw new BitcoinURIParseException("Malformed Bitcoin URI - no separator in '" +
                         nameValuePairToken + "'");
-            }
+            if (sepIndex == 0)
-
+                throw new BitcoinURIParseException("Malformed Bitcoin URI - empty name '" +
-            String nameToken = tokens[0].toLowerCase();
+                        nameValuePairToken + "'");
-            String valueToken = tokens[1];
+            final String nameToken = nameValuePairToken.substring(0, sepIndex).toLowerCase(Locale.ENGLISH);
+            final String valueToken = nameValuePairToken.substring(sepIndex + 1);
 
             // Parse the amount.
             if (FIELD_AMOUNT.equals(nameToken)) {
@@ -219,7 +221,8 @@ public class BitcoinURI {
                 } else {
                     // Known fields and unknown parameters that are optional.
                     try {
-                        putWithValidation(nameToken, URLDecoder.decode(valueToken, "UTF-8"));
+                        if (valueToken.length() > 0)
+                            putWithValidation(nameToken, URLDecoder.decode(valueToken, "UTF-8"));
                     } catch (UnsupportedEncodingException e) {
                         // Unreachable.
                         throw new RuntimeException(e);

core/src/test/java/com/google/bitcoin/uri/BitcoinURITest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012 the original author or authors.
+ * Copyright 2012, 2014 the original author or authors.
  * 
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -271,38 +271,16 @@ public class BitcoinURITest {
         }
     }
 
-    /**
-     * Handles a badly formatted label field
-     * 
-     * @throws BitcoinURIParseException
-     *             If something goes wrong
-     */
     @Test
-    public void testBad_Label() throws BitcoinURIParseException {
+    public void testEmpty_Label() throws BitcoinURIParseException {
-        try {
+        assertNull(new BitcoinURI(MainNetParams.get(), BitcoinURI.BITCOIN_SCHEME + ":" + MAINNET_GOOD_ADDRESS
-            testObject = new BitcoinURI(MainNetParams.get(), BitcoinURI.BITCOIN_SCHEME + ":" + MAINNET_GOOD_ADDRESS
+                + "?label=").getLabel());
-                    + "?label=");
-            fail("Expecting BitcoinURIParseException");
-        } catch (BitcoinURIParseException e) {
-            assertTrue(e.getMessage().contains("label"));
-        }
     }
 
-    /**
-     * Handles a badly formatted message field
-     * 
-     * @throws BitcoinURIParseException
-     *             If something goes wrong
-     */
     @Test
-    public void testBad_Message() throws BitcoinURIParseException {
+    public void testEmpty_Message() throws BitcoinURIParseException {
-        try {
+        assertNull(new BitcoinURI(MainNetParams.get(), BitcoinURI.BITCOIN_SCHEME + ":" + MAINNET_GOOD_ADDRESS
-            testObject = new BitcoinURI(MainNetParams.get(), BitcoinURI.BITCOIN_SCHEME + ":" + MAINNET_GOOD_ADDRESS
+                + "?message=").getMessage());
-                    + "?message=");
-            fail("Expecting BitcoinURIParseException");
-        } catch (BitcoinURIParseException e) {
-            assertTrue(e.getMessage().contains("message"));
-        }
     }
 
     /**
@@ -322,21 +300,10 @@ public class BitcoinURITest {
         }
     }
 
-    /**
-     * Handles case when there are too many equals
-     * 
-     * @throws BitcoinURIParseException
-     *             If something goes wrong
-     */
     @Test
-    public void testBad_TooManyEquals() throws BitcoinURIParseException {
+    public void testGood_ManyEquals() throws BitcoinURIParseException {
-        try {
+        assertEquals("aardvark=zebra", new BitcoinURI(MainNetParams.get(), BitcoinURI.BITCOIN_SCHEME + ":"
-            testObject = new BitcoinURI(MainNetParams.get(), BitcoinURI.BITCOIN_SCHEME + ":" + MAINNET_GOOD_ADDRESS
+                + MAINNET_GOOD_ADDRESS + "?label=aardvark=zebra").getLabel());
-                    + "?label=aardvark=zebra");
-            fail("Expecting BitcoinURIParseException");
-        } catch (BitcoinURIParseException e) {
-            assertTrue(e.getMessage().contains("cannot parse name value pair"));
-        }
     }
 
     /**
@@ -377,7 +344,7 @@ public class BitcoinURITest {
                     + "?aardvark");
             fail("Expecting BitcoinURIParseException");
         } catch (BitcoinURIParseException e) {
-            assertTrue(e.getMessage().contains("cannot parse name value pair"));
+            assertTrue(e.getMessage().contains("no separator"));
         }
 
         // Unknown and required field