1 files changed, 16 insertions, 0 deletions
diff --git a/src/libs6dns/s6dns_message_get_string_internal.c b/src/libs6dns/s6dns_message_get_string_internal.c
new file mode 100644
index 0000000..4f6eb0c
--- /dev/null
+++ b/src/libs6dns/s6dns_message_get_string_internal.c
@@ -0,0 +1,16 @@
+/* ISC license. */
+
+#include <errno.h>
+#include <skalibs/error.h>
+#include <skalibs/bytestr.h>
+#include "s6dns-message-internal.h"
+
+int s6dns_message_get_string_internal (char *s, unsigned int max, char const *packet, unsigned int packetlen, unsigned int *pos)
+{
+  register unsigned char len = ((unsigned char const *)packet)[*pos] ;
+  if (*pos + len + 1 > packetlen) return (errno = EPROTO, -1) ;
+  if (len > max) return (errno = ENAMETOOLONG, -1) ;
+  byte_copy(s, len, packet + *pos + 1) ;
+  *pos += len + 1 ;
+  return (int)len ;
+}