From 579550468cba65770a28c5bf13fd6a23dd9afabd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Juhani=20Krekel=C3=A4?= <juhani@krekelä.fi>
Date: Mon, 15 Jul 2019 00:30:53 +0300
Subject: [PATCH] Fix bug in check_utf8() where it would allow all C0 control
 codes other than LF

---
 ethermess-backend.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ethermess-backend.c b/ethermess-backend.c
index 812ddf1..a28677d 100644
--- a/ethermess-backend.c
+++ b/ethermess-backend.c
@@ -589,7 +589,7 @@ bool check_utf8(const unsigned char *data, size_t data_length, bool newline_allo
 			// Reject control characters
 			if (codepoint <= 0x1f) {
 				// C0 control character
-				if (!newline_allowed || codepoint == 0x0a) {
+				if (!newline_allowed || codepoint != 0x0a) {
 					return false;
 				}
 			} else if (0x80 <= codepoint && codepoint <= 0x9f) {