DataHelper: Minor efficiency improvements in Properties methods

core/java/src/net/i2p/data/DataHelper.java

@@ -148,10 +148,12 @@ public class DataHelper {
      */
     public static Properties readProperties(InputStream rawStream, Properties props) 
         throws DataFormatException, IOException {
-        long size = readLong(rawStream, 2);
+        int size = (int) readLong(rawStream, 2);
-        byte data[] = new byte[(int) size];
+        if (size == 0)
-        int read = read(rawStream, data);
+            return props;
-        if (read != size) throw new DataFormatException("Not enough data to read the properties, expected " + size + " but got " + read);
+        byte data[] = new byte[size];
+        // full read guaranteed
+        read(rawStream, data);
         ByteArrayInputStream in = new ByteArrayInputStream(data);
         while (in.available() > 0) {
             String key = readString(in);
@@ -213,7 +215,7 @@ public class DataHelper {
      */
     public static void writeProperties(OutputStream rawStream, Properties props, boolean utf8) 
             throws DataFormatException, IOException {
-        writeProperties(rawStream, props, utf8, props != null && !(props instanceof OrderedProperties));
+        writeProperties(rawStream, props, utf8, props != null && props.size() > 1 && !(props instanceof OrderedProperties));
     }
 
     /**
@@ -242,7 +244,7 @@ public class DataHelper {
             throws DataFormatException, IOException {
         if (props != null && !props.isEmpty()) {
             Properties p;
-            if (sort) {
+            if (sort && props.size() > 1) {
                 p = new OrderedProperties();
                 p.putAll(props);
             } else {
@@ -866,9 +868,8 @@ public class DataHelper {
             return "";   // reduce object proliferation
         size &= 0xff;
         byte raw[] = new byte[size];
-        int read = read(in, raw);
+        // full read guaranteed
-        // was DataFormatException
+        read(in, raw);
-        if (read != size) throw new EOFException("EOF reading string");
         // the following constructor throws an UnsupportedEncodingException which is an IOException,
         // but that's only if UTF-8 is not supported. Other encoding errors are not thrown.
         return new String(raw, "UTF-8");

history.txt

@@ -1,3 +1,14 @@
+2018-12-01 zzz
+ * I2CP: Add preliminary support for LS2 (proposal #123)
+ * Router: More support for LS2 types (proposal #123)
+
+2018-11-30 zzz
+ * Crypto: Move X25519 primitives from router to core (proposal #144)
+ * Data: Update LS2 sign/verify to match spec changes (proposal #123)
+
+2018-11-25 zzz
+ * Utils: Catch ProviderException in SelfSignedGenerator (ticket #2344)
+
 2018-11-20 zzz
  * GeoIP: Add support for Maxmind GeoLite2 format (ticket #2268)
 

router/java/src/net/i2p/router/RouterVersion.java

@@ -18,7 +18,7 @@ public class RouterVersion {
     /** deprecated */
     public final static String ID = "Monotone";
     public final static String VERSION = CoreVersion.VERSION;
-    public final static long BUILD = 6;
+    public final static long BUILD = 7;
 
     /** for example "-test" */
     public final static String EXTRA = "";