From e01a1ccd94c9d8ba0a3c8aa05a767761b90a1d6d Mon Sep 17 00:00:00 2001
From: Stephen Seo <seo.disparate@gmail.com>
Date: Fri, 6 Mar 2020 13:03:47 +0900
Subject: [PATCH] Fix compilation fail on no libsodium

---
 src/UDPC_Defines.hpp  | 4 +++-
 src/UDPConnection.cpp | 4 ++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/UDPC_Defines.hpp b/src/UDPC_Defines.hpp
index 16c3c29..416fe19 100644
--- a/src/UDPC_Defines.hpp
+++ b/src/UDPC_Defines.hpp
@@ -35,7 +35,9 @@
 #include "TSLQueue.hpp"
 #include "UDPC.h"
 
-#include <sodium.h>
+#ifdef UDPC_LIBSODIUM_ENABLED
+# include <sodium.h>
+#endif
 
 #define UDPC_MIN_HEADER_SIZE 20
 #define UDPC_CON_HEADER_SIZE (UDPC_MIN_HEADER_SIZE+4)
diff --git a/src/UDPConnection.cpp b/src/UDPConnection.cpp
index 36d0932..1e0d28f 100644
--- a/src/UDPConnection.cpp
+++ b/src/UDPConnection.cpp
@@ -2349,11 +2349,15 @@ int UDPC_set_libsodium_keys(UDPC_HContext ctx, const unsigned char *sk, const un
 }
 
 int UDPC_set_libsodium_key_easy(UDPC_HContext ctx, const unsigned char *sk) {
+#ifndef UDPC_LIBSODIUM_ENABLED
+    return 0;
+#else
     unsigned char pk[crypto_sign_PUBLICKEYBYTES];
     if(crypto_sign_ed25519_sk_to_pk(pk, sk) != 0) {
         return 0;
     }
     return UDPC_set_libsodium_keys(ctx, sk, pk);
+#endif
 }
 
 int UDPC_unset_libsodium_keys(UDPC_HContext ctx) {