- Fix dup torrent msg with magnets (tickets #433 and #504)

- Fix state when storage dies during transition out of magnet mode
    - Fix NPE in magnet mode
    - Error logging improvements
    - Support add-torrent with infohash alone
    - CSS tweaks

apps/i2psnark/java/src/org/klomp/snark/Snark.java

@@ -1031,6 +1031,8 @@ public class Snark
     stopTorrent();
     if (t != null)
         s += ": " + t;
+    if (completeListener != null)
+        completeListener.fatal(this, s);
     throw new RuntimeException(s, t);
   }
 
@@ -1058,10 +1060,12 @@ public class Snark
    * @since 0.8.4
    */
   public void gotMetaInfo(PeerCoordinator coordinator, MetaInfo metainfo) {
-      meta = metainfo;
       try {
-          storage = new Storage(_util, meta, this);
+          // The following two may throw IOE...
+          storage = new Storage(_util, metainfo, this);
           storage.check(rootDataDir);
+          // ... so don't set meta until here
+          meta = metainfo;
           if (completeListener != null) {
               String newName = completeListener.gotMetaInfo(this);
               if (newName != null)
@@ -1169,6 +1173,11 @@ public class Snark
      */
     public String gotMetaInfo(Snark snark);
 
+    /**
+     * @since 0.9
+     */
+    public void fatal(Snark snark, String error);
+
     // not really listeners but the easiest way to get back to an optional SnarkManager
     public long getSavedTorrentTime(Snark snark);
     public BitField getSavedTorrentBitField(Snark snark);

apps/i2psnark/java/src/org/klomp/snark/SnarkManager.java

@@ -1280,8 +1280,11 @@ public class SnarkManager implements Snark.CompleteListener {
                 return null;
             }
             saveTorrentStatus(meta, storage.getBitField(), null); // no file priorities
-            String name = (new File(getDataDir(), storage.getBaseName() + ".torrent")).getAbsolutePath();
+            // temp for addMessage() in case canonical throws
+            String name = storage.getBaseName();
             try {
+                // _snarks must use canonical
+                name = (new File(getDataDir(), storage.getBaseName() + ".torrent")).getCanonicalPath();
                 // put the announce URL in the file
                 String announce = snark.getTrackerURL();
                 if (announce != null)
@@ -1305,6 +1308,14 @@ public class SnarkManager implements Snark.CompleteListener {
         return null;
     }
 
+    /**
+     * A Snark.CompleteListener method.
+     * @since 0.9
+     */
+    public void fatal(Snark snark, String error) {
+        addMessage(_("Error on torrent {0}", snark.getName()) + ": " + error);
+    }
+    
     // End Snark.CompleteListeners
 
     /**

apps/i2psnark/java/src/org/klomp/snark/TrackerClient.java

@@ -348,7 +348,7 @@ public class TrackerClient extends I2PAppThread
             }  // *** end of trackers loop here
 
             // Get peers from PEX
-            if (left > 0 && coordinator.needPeers() && (!meta.isPrivate()) && !stop) {
+            if (left > 0 && coordinator.needPeers() && (meta == null || !meta.isPrivate()) && !stop) {
                 Set<PeerID> pids = coordinator.getPEXPeers();
                 if (!pids.isEmpty()) {
                     _util.debug("Got " + pids.size() + " from PEX", Snark.INFO);
@@ -370,7 +370,7 @@ public class TrackerClient extends I2PAppThread
 
             // Get peers from DHT
             // FIXME this needs to be in its own thread
-            if (_util.getDHT() != null && (!meta.isPrivate()) && !stop) {
+            if (_util.getDHT() != null && (meta == null || !meta.isPrivate()) && !stop) {
                 int numwant;
                 if (left == 0 || event.equals(STOPPED_EVENT) || !coordinator.needPeers())
                     numwant = 1;

apps/i2psnark/java/src/org/klomp/snark/web/I2PSnarkServlet.java

@@ -544,6 +544,8 @@ public class I2PSnarkServlet extends DefaultServlet {
                     fetch.start();
                 } else if (newURL.startsWith(MAGNET) || newURL.startsWith(MAGGOT)) {
                     addMagnet(newURL);
+                } else if (newURL.length() == 40 && newURL.replaceAll("[a-fA-F0-9]", "").length() == 0) {
+                    addMagnet(MAGNET_FULL + newURL);
                 } else {
                     _manager.addMessage(_("Invalid URL: Must start with \"http://\", \"{0}\", or \"{1}\"", MAGNET, MAGGOT));
                 }
@@ -1316,7 +1318,7 @@ public class I2PSnarkServlet extends DefaultServlet {
         out.write(_("From URL"));
         out.write(":<td><input type=\"text\" name=\"newURL\" size=\"85\" value=\"" + newURL + "\"");
         out.write(" title=\"");
-        out.write(_("Enter the torrent file download URL (I2P only), magnet link, or maggot link"));
+        out.write(_("Enter the torrent file download URL (I2P only), magnet link, maggot link, or info hash"));
         out.write("\"> \n");
         // not supporting from file at the moment, since the file name passed isn't always absolute (so it may not resolve)
         //out.write("From file: <input type=\"file\" name=\"newFile\" size=\"50\" value=\"" + newFile + "\" /><br>");
@@ -1509,11 +1511,11 @@ public class I2PSnarkServlet extends DefaultServlet {
                   "<tr><td>");
         out.write(_("Up bandwidth limit"));
         out.write(": <td><input type=\"text\" name=\"upBW\" class=\"r\" value=\""
-                  + _manager.util().getMaxUpBW() + "\" size=\"3\" maxlength=\"3\" > KBps <i>(");
+                  + _manager.util().getMaxUpBW() + "\" size=\"3\" maxlength=\"3\" > KBps <i>");
         out.write(_("Half available bandwidth recommended."));
-        out.write(" <a href=\"/config.jsp\" target=\"blank\">");
+        out.write("<br><a href=\"/config.jsp\" target=\"blank\">");
         out.write(_("View or change router bandwidth"));
-        out.write("</a>)</i><br>\n" +
+        out.write("</a></i><br>\n" +
         
                   "<tr><td>");
         out.write(_("Use open trackers also"));