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path: root/src/libs6dns/s6dns_message_parse.c
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Diffstat (limited to 'src/libs6dns/s6dns_message_parse.c')
-rw-r--r--src/libs6dns/s6dns_message_parse.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/src/libs6dns/s6dns_message_parse.c b/src/libs6dns/s6dns_message_parse.c
new file mode 100644
index 0000000..f4af437
--- /dev/null
+++ b/src/libs6dns/s6dns_message_parse.c
@@ -0,0 +1,37 @@
+/* ISC license. */
+
+#include <errno.h>
+#include <skalibs/error.h>
+#include <s6-dns/s6dns-constants.h>
+#include <s6-dns/s6dns-message.h>
+
+int s6dns_message_parse (s6dns_message_header_t *h, char const *packet, unsigned int packetlen, s6dns_message_rr_func_t_ref f, void *data)
+{
+ s6dns_message_counts_t counts ;
+ unsigned int pos ;
+ unsigned int section ;
+ if (!s6dns_message_parse_init(h, &counts, packet, packetlen, &pos)) return 0 ;
+ switch (h->rcode)
+ {
+ case 0 : break ;
+ case 1 : return (errno = EBADMSG, 0) ;
+ case 2 : return (errno = EBUSY, 0) ;
+ case 3 : return (errno = ENOENT, 0) ;
+ case 4 : return (errno = ENOTSUP, 0) ;
+ case 5 : return (errno = ECONNREFUSED, 0) ;
+ default: return (errno = EIO, 0) ;
+ }
+ section = s6dns_message_parse_skipqd(&counts, packet, packetlen, &pos) ;
+ while (section)
+ {
+ s6dns_message_rr_t rr ;
+ if (!s6dns_message_parse_getrr(&rr, packet, packetlen, &pos)) return 0 ;
+ if (rr.rclass == S6DNS_C_IN)
+ {
+ register int r = (*f)(&rr, packet, packetlen, pos, section, data) ;
+ if (r < 1) return r ;
+ }
+ section = s6dns_message_parse_next(&counts, &rr, packet, packetlen, &pos) ;
+ }
+ return 1 ;
+}