Initial commit

1 files changed, 22 insertions, 0 deletions

diff --git a/src/libs6dns/s6dns_analyze_record_mx.c b/src/libs6dns/s6dns_analyze_record_mx.c
new file mode 100644
index 0000000..adf9995
--- /dev/null
+++ b/src/libs6dns/s6dns_analyze_record_mx.c
@@ -0,0 +1,22 @@
+/* ISC license. */
+
+#include <errno.h>
+#include <skalibs/error.h>
+#include <skalibs/genwrite.h>
+#include <s6-dns/s6dns-message.h>
+#include <s6-dns/s6dns-fmt.h>
+#include <s6-dns/s6dns-analyze.h>
+
+int s6dns_analyze_record_mx (genwrite_t *gp, s6dns_message_rr_t const *rr, char const *packet, unsigned int packetlen, unsigned int start)
+{
+  s6dns_message_rr_mx_t mx ;
+  char buf[S6DNS_FMT_MX] ;
+  unsigned int pos = start ;
+  unsigned int len ;
+  if (!s6dns_message_get_mx(&mx, packet, packetlen, &pos)) return 0 ;
+  if (rr->rdlength != pos - start) return (errno = EPROTO, 0) ;
+  len = s6dns_fmt_mx(buf, S6DNS_FMT_MX, &mx) ;
+  if (!len) return 0 ;
+  if ((*gp->put)(gp->target, buf, len) < 0) return 0 ;
+  return 1 ;
+}