Add nodecode functions for get_domain and parse_question

 Also make sure get_domain always returns lowercase.

Signed-off-by: Laurent Bercot <ska@appnovation.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/src/libs6dns/s6dns_message_parse_question_nodecode.c b/src/libs6dns/s6dns_message_parse_question_nodecode.c
new file mode 100644
index 0000000..f6cc4a7
--- /dev/null
+++ b/src/libs6dns/s6dns_message_parse_question_nodecode.c
@@ -0,0 +1,28 @@
+/* ISC license. */
+
+#include <stdint.h>
+#include <errno.h>
+
+#include <skalibs/posixishard.h>
+#include <skalibs/uint16.h>
+
+#include <s6-dns/s6dns-constants.h>
+#include <s6-dns/s6dns-domain.h>
+#include <s6-dns/s6dns-message.h>
+
+int s6dns_message_parse_question_nodecode (s6dns_message_counts_t *counts, s6dns_domain_t *name, uint16_t *qtypep, char const *packet, unsigned int packetlen, unsigned int *pos)
+{
+  s6dns_domain_t d ;
+  uint16_t qtype ;
+  uint16_t qclass ;
+  if (!counts->qd) return (errno = EINVAL, 0) ;
+  if (!s6dns_message_get_domain_nodecode(&d, packet, packetlen, pos)) return 0 ;
+  if (*pos + 4 > packetlen) return (errno = EPROTO, 0) ;
+  uint16_unpack_big(packet + *pos, &qtype) ; *pos += 2 ;
+  uint16_unpack_big(packet + *pos, &qclass) ; *pos += 2 ;
+  if (qclass != S6DNS_C_IN) return (errno = ENOTSUP, 0) ;
+  counts->qd-- ;
+  *name = d ;
+  *qtypep = qtype ;
+  return 1 ;
+}