From c04904a4f54f8949a6a7821a0859e2732366259b Mon Sep 17 00:00:00 2001
From: licunlong <licunlong1@huawei.com>
Date: Tue, 24 Nov 2020 19:57:38 +0800
Subject: [PATCH] treat hyphen as valid hostname char

---
 src/basic/hostname-util.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/src/basic/hostname-util.c b/src/basic/hostname-util.c
index 5bfa028..b80a2b8 100644
--- a/src/basic/hostname-util.c
+++ b/src/basic/hostname-util.c
@@ -77,6 +77,16 @@ bool valid_ldh_char(char c) {
                 c == '-';
 }
 
+static bool hostname_valid_char(char c) {
+        return
+                (c >= 'a' && c <= 'z') ||
+                (c >= 'A' && c <= 'Z') ||
+                (c >= '0' && c <= '9') ||
+                c == '-' ||
+                c == '_' ||
+                c == '.';
+}
+
 bool hostname_is_valid(const char *s, ValidHostnameFlags flags) {
         unsigned n_dots = 0;
         const char *p;
@@ -117,7 +127,7 @@ bool hostname_is_valid(const char *s, bool allow_trailing_dot) {
                         hyphen = true;
 
                 } else {
-                        if (!valid_ldh_char(*p))
+                        if (!hostname_valid_char(*p))
                                 return false;
 
                         dot = false;
@@ -160,7 +170,7 @@ char* hostname_cleanup(char *s) {
                         dot = false;
                         hyphen = true;
 
-                } else if (valid_ldh_char(*p)) {
+                } else if (hostname_valid_char(*p)) {
                         *(d++) = *p;
                         dot = false;
                         hyphen = false;
-- 
2.23.0