jbigi: Save and report extracted library name

core/java/src/net/i2p/util/NativeBigInteger.java

@@ -96,9 +96,11 @@ import net.i2p.crypto.CryptoConstants;
  */
 public class NativeBigInteger extends BigInteger {
     /** did we load the native lib correctly? */
-    private static boolean _nativeOk = false;
+    private static boolean _nativeOk;
     private static String _loadStatus = "uninitialized";
     private static String _cpuModel = "uninitialized";
+    private static String _extractedResource;
+
     /** 
      * do we want to dump some basic success/failure info to stderr during 
      * initialization?  this would otherwise use the Log component, but this makes
@@ -340,10 +342,24 @@ public class NativeBigInteger extends BigInteger {
         return _nativeOk;
     }
  
+    /**
+     * @return A string suitable for display to the user
+     */
     public static String loadStatus() {
         return _loadStatus;
     }
  
+    /**
+     *  The name of the library loaded, if known.
+     *  Null if unknown or not loaded.
+     *  Currently non-null only if extracted from jbigi.jar.
+     *
+     *  @since 0.9.17
+     */
+    public static String getLoadedResourceName() {
+        return _extractedResource;
+    }
+ 
     public static String cpuType() {
         if (sCPUType != null)
             return sCPUType;
@@ -459,6 +475,10 @@ public class NativeBigInteger extends BigInteger {
                 boolean loaded = loadGeneric("jbigi");
                 if (loaded) {
                     _nativeOk = true;
+                    String s = I2PAppContext.getGlobalContext().getProperty("jbigi.loadedResource");
+                    if (s != null)
+                        info("Locally optimized library " + s + " loaded from file");
+                    else
                         info("Locally optimized native BigInteger library loaded from file");
                 } else {
                     List<String> toTry = getResourceList();
@@ -467,6 +487,7 @@ public class NativeBigInteger extends BigInteger {
                         debug("trying loadResource " + s);
                         if (loadFromResource(s)) {
                             _nativeOk = true;
+                            _extractedResource = s;
                             info("Native BigInteger library " + s + " loaded from resource");
                             break;
                         }

router/java/src/net/i2p/router/Router.java

@@ -49,6 +49,7 @@ import net.i2p.util.FortunaRandomSource;
 import net.i2p.util.I2PAppThread;
 import net.i2p.util.I2PThread;
 import net.i2p.util.Log;
+import net.i2p.util.NativeBigInteger;
 import net.i2p.util.OrderedProperties;
 import net.i2p.util.SecureFileOutputStream;
 import net.i2p.util.SimpleByteCache;
@@ -102,6 +103,7 @@ public class Router implements RouterClock.ClockShiftListener {
     public final static String PROP_SHUTDOWN_IN_PROGRESS = "__shutdownInProgress";
     public final static String DNS_CACHE_TIME = "" + (5*60);
     private static final String EVENTLOG = "eventlog.txt";
+    private static final String PROP_JBIGI = "jbigi.loadedResource";
         
     private static final String originalTimeZoneID;
     static {
@@ -750,6 +752,9 @@ public class Router implements RouterClock.ClockShiftListener {
         _context.random().nextBoolean();
         // Instantiate to fire up the YK refiller thread
         _context.elGamalEngine();
+        String loaded = NativeBigInteger.getLoadedResourceName();
+        if (loaded != null)
+            saveConfig(PROP_JBIGI, loaded);
     }
     
     private void startupQueue() {