copyright and tweaks

res/libsodium/buildlibsodium.sh

@@ -1,7 +1,10 @@
 #!/bin/bash
+# Copyright 2019-2021 The Hush developers
+# Released under the GPLv3
 
 # First thing to do is see if libsodium.a exists in the res folder. If it does, then there's nothing to do
 if [ -f res/libsodium.a ]; then
+    echo "libsodium is already built! Nothing to do"
     exit 0
 fi
 
@@ -10,10 +13,14 @@ echo "Building libsodium"
 # Go into the lib sodium directory
 cd res/libsodium
 if [ ! -f libsodium-1.0.18.tar.gz ]; then
+    echo "Downloading libsodium"
     curl -LO https://github.com/MyHush/libsodium/releases/download/1.0.18/libsodium-1.0.18.tar.gz
 fi
 
+# TODO: check libsodium downloaded correctly
+
 if [ ! -d libsodium-1.0.18 ]; then
+    echo "Unpacking libsodium"
     tar xf libsodium-1.0.18.tar.gz
 fi