From 4b228e007f3580b0aeaf0d6b7b70f456be92f7d9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stefan=20B=C3=BChler?= <stbuehler@web.de>
Date: Sat, 7 Mar 2020 17:10:12 +0100
Subject: [PATCH] DEL (0x7f) character needs to be escaped (not printable) in
 output

---
 lib/dnsbox-base/src/records/powerdns_tests.rs | 6 ++++++
 lib/dnsbox-base/src/ser/text/quoted.rs        | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/lib/dnsbox-base/src/records/powerdns_tests.rs b/lib/dnsbox-base/src/records/powerdns_tests.rs
index eea65fd..ba12d06 100644
--- a/lib/dnsbox-base/src/records/powerdns_tests.rs
+++ b/lib/dnsbox-base/src/records/powerdns_tests.rs
@@ -304,6 +304,12 @@ fn test_TXT() {
 		None,
 		b"\x0e\xc3\x85LAND ISLANDS",
 	);
+	check(
+		types::TXT,
+		"\"text with DEL in there: \\127\"",
+		None,
+		b"\x19text with DEL in there: \x7f",
+	);
 	check(
 		types::TXT,
 		"\"\u{00c5}LAND ISLANDS\"",
diff --git a/lib/dnsbox-base/src/ser/text/quoted.rs b/lib/dnsbox-base/src/ser/text/quoted.rs
index 761b86f..f8ea5a1 100644
--- a/lib/dnsbox-base/src/ser/text/quoted.rs
+++ b/lib/dnsbox-base/src/ser/text/quoted.rs
@@ -43,7 +43,7 @@ impl<'a> Iterator for EncodeIterator<'a> {
 		}
 		let b = self.data[0];
 		self.data = &self.data[1..];
-		if b < 32 || b > 127 || (self.encode_whitespace && is_ascii_whitespace(b)) {
+		if b < 32 || b >= 127 || (self.encode_whitespace && is_ascii_whitespace(b)) {
 			// `\ddd`
 			let d1 = b / 100;
 			let d2 = (b / 10) % 10;