resolved: make sure domain name hash function deals nicely with NUL embedded in labels

diff --git a/src/shared/dns-domain.c b/src/shared/dns-domain.c
index 3848a0518d040a526d51d0afff625a071354638b..729508e6a514a398e9994e97655b1bfc87cac2f1 100644 (file)
--- a/src/shared/dns-domain.c
+++ b/src/shared/dns-domain.c
@@ -503,10 +503,8 @@ void dns_name_hash_func(const void *s, struct siphash *state) {
                 if (r == 0)
                         break;
 
-                label[r] = 0;
-                ascii_strlower(label);
-
-                string_hash_func(label, state);
+                ascii_strlower_n(label, r);
+                siphash24_compress(label, r, state);
         }
 
         /* enforce that all names are terminated by the empty label */