From: Guus Sliepen <guus@tinc-vpn.org>
Date: Tue, 15 Oct 2013 12:09:42 +0000 (+0200)
Subject: Fix sending empty SPTPS records.
X-Git-Tag: release-1.1pre10~46
X-Git-Url: https://tinc-vpn.org/git/browse?a=commitdiff_plain;h=9b2eaebdf6eb46321403bfc6af1145d051d3bbdc;p=tinc

Fix sending empty SPTPS records.
---

diff --git a/src/openssl/cipher.c b/src/openssl/cipher.c
index b01f5267..5172d82e 100644
--- a/src/openssl/cipher.c
+++ b/src/openssl/cipher.c
@@ -160,7 +160,7 @@ bool cipher_gcm_encrypt_start(cipher_t *cipher, const void *indata, size_t inlen
 
 bool cipher_gcm_encrypt_finish(cipher_t *cipher, const void *indata, size_t inlen, void *outdata, size_t *outlen) {
 	int len = 0, pad = 0;
-	if(!(inlen && EVP_EncryptUpdate(&cipher->ctx, (unsigned char *)outdata, &len, (unsigned char *)indata, inlen))
+	if((inlen && !EVP_EncryptUpdate(&cipher->ctx, (unsigned char *)outdata, &len, (unsigned char *)indata, inlen))
 			|| !EVP_EncryptFinal(&cipher->ctx, (unsigned char *)outdata + len, &pad)) {
 		logger(DEBUG_ALWAYS, LOG_ERR, "Error while encrypting: %s", ERR_error_string(ERR_get_error(), NULL));
 		return false;