From: Nick Owens <nick.owens@coreos.com>
Date: Tue, 2 Jun 2015 23:29:39 +0000 (-0700)
Subject: shared: add convenience function for validating dns names
X-Git-Tag: v221~126^2~1
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=df6cfeeff7b66856dd20956efe97d87faf8ce1c3;p=thirdparty%2Fsystemd.git

shared: add convenience function for validating dns names
---

diff --git a/src/shared/dns-domain.h b/src/shared/dns-domain.h
index 516d244f7a3..00caf5d7001 100644
--- a/src/shared/dns-domain.h
+++ b/src/shared/dns-domain.h
@@ -35,6 +35,15 @@ int dns_label_apply_idna(const char *encoded, size_t encoded_size, char *decoded
 int dns_label_undo_idna(const char *encoded, size_t encoded_size, char *decoded, size_t decoded_max);
 
 int dns_name_normalize(const char *s, char **_ret);
+static inline int dns_name_is_valid(const char *s) {
+        int r;
+        r = dns_name_normalize(s, NULL);
+        if (r == -EINVAL)
+                return 0;
+        if (r < 0)
+                return r;
+        return 1;
+}
 
 unsigned long dns_name_hash_func(const void *s, const uint8_t hash_key[HASH_KEY_SIZE]);
 int dns_name_compare_func(const void *a, const void *b);