1 files changed, 14 insertions, 0 deletions
diff --git a/src/libs6dns/s6dns_message_get_mx.c b/src/libs6dns/s6dns_message_get_mx.c
new file mode 100644
index 0000000..6bca509
--- /dev/null
+++ b/src/libs6dns/s6dns_message_get_mx.c
@@ -0,0 +1,14 @@
+/* ISC license. */
+
+#include <errno.h>
+#include <skalibs/error.h>
+#include <skalibs/uint16.h>
+#include <s6-dns/s6dns-domain.h>
+#include <s6-dns/s6dns-message.h>
+
+int s6dns_message_get_mx (s6dns_message_rr_mx_t *mx, char const *packet, unsigned int packetlen, unsigned int *pos)
+{
+  if (*pos + 3 > packetlen) return (errno = EPROTO, 0) ;
+  uint16_unpack_big(packet + *pos, &mx->preference) ; *pos += 2 ;
+  return s6dns_message_get_domain(&mx->exchange, packet, packetlen, pos) ;
+}