Enable indexes by default, and re-enable groth16, which must be initialized together with sapling param files

src/connection.cpp

@@ -183,11 +183,15 @@ void ConnectionLoader::createZcashConf() {
 
     QTextStream out(&file);
 
+    out << "# Autogenerated by Silent Dragon\n";
     out << "server=1\n";
     out << "rpcuser=hush\n";
     out << "rpcpassword=" % randomPassword() << "\n";
     out << "rpcport=18031\n";
     out << "txindex=1\n";
+    out << "addressindex=1\n";
+    out << "spentindex=1\n";
+    out << "timestampindex=1\n";
     out << "rpcworkqueue=256\n";
     out << "rpcallowip=127.0.0.1\n";
 
@@ -210,11 +214,9 @@ void ConnectionLoader::downloadParams(std::function<void(void)> cb) {
     // Add all the files to the download queue
     downloadQueue = new QQueue<QUrl>();
     client = new QNetworkAccessManager(main);   
-    
+
     downloadQueue->enqueue(QUrl("https://z.cash/downloads/sapling-output.params"));
-    downloadQueue->enqueue(QUrl("https://z.cash/downloads/sapling-spend.params"));    
-    downloadQueue->enqueue(QUrl("https://z.cash/downloads/sprout-proving.key"));
-    downloadQueue->enqueue(QUrl("https://z.cash/downloads/sprout-verifying.key"));
+    downloadQueue->enqueue(QUrl("https://z.cash/downloads/sapling-spend.params"));
     downloadQueue->enqueue(QUrl("https://z.cash/downloads/sprout-groth16.params"));
 
     doNextDownload(cb);    
@@ -569,11 +571,10 @@ bool ConnectionLoader::verifyParams() {
 
     if (!QFile(paramsDir.filePath("sapling-output.params")).exists()) return false;
     if (!QFile(paramsDir.filePath("sapling-spend.params")).exists()) return false;
-    //TODO: sprout probably not needed
-    if (!QFile(paramsDir.filePath("sprout-proving.key")).exists()) return false;
-    if (!QFile(paramsDir.filePath("sprout-verifying.key")).exists()) return false;
     if (!QFile(paramsDir.filePath("sprout-groth16.params")).exists()) return false;
 
+    qDebug() << "All param files found!";
+
     return true;
 }