Initial commit

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

1 files changed, 48 insertions, 0 deletions

diff --git a/src/server/shibari_packet_add_glue.c b/src/server/shibari_packet_add_glue.c
new file mode 100644
index 0000000..4a0abf1
--- /dev/null
+++ b/src/server/shibari_packet_add_glue.c
@@ -0,0 +1,48 @@
+/* ISC license. */
+
+#include <skalibs/cdb.h>
+
+#include <shibari/constants.h>
+#include <shibari/util.h>
+#include <shibari/tdb.h>
+#include <shibari/packet.h>
+
+static int shibari_packet_add_glue_for_rr (shibari_packet *pkt, cdb const *tdb, char const *s, uint16_t len, uint16_t prefixlen, uint16_t offset, char const *loc, tain const *stamp)
+{
+  cdb_find_state state = CDB_FIND_STATE_ZERO ;
+  for (;;)
+  {
+    shibari_tdb_entry entry ;
+    int r = shibari_tdb_read_entry(tdb, &state, &entry, s, len, SHIBARI_T_ANY, 0, loc, stamp, 0) ;
+    if (r == -1) return 2 ;
+    if (!r) break ;
+    if (entry.type != SHIBARI_T_A && entry.type != SHIBARI_T_AAAA) continue ;
+    if (!shibari_packet_add_rr(pkt, &entry, prefixlen, offset, 4))
+    {
+      pkt->hdr.tc = 1 ;
+      return 0 ;
+    }
+  }
+  return -1 ;
+}
+
+unsigned int shibari_packet_add_glue (shibari_packet *pkt, cdb const *tdb, char const *s, uint16_t len, uint16_t qtype, char const *z, uint16_t zlen, uint16_t zoffset, uint16_t wildpos, char const *loc, tain const *stamp)
+{
+  cdb_find_state state = CDB_FIND_STATE_ZERO ;
+  for (;;)
+  {
+    shibari_tdb_entry entry ;
+    cdb_data domain ;
+    int zprefixlen, sprefixlen ;
+    int r = shibari_tdb_read_entry(tdb, &state, &entry, s + wildpos, len - wildpos, qtype, !!wildpos, loc, stamp, 0) ;
+    if (r == -1) return 2 ;
+    if (!r) break ;
+    if (!shibari_tdb_extract_domain(&entry, &domain)) continue ;
+    zprefixlen = shibari_util_get_prefixlen(domain.s, domain.len, z, zlen) ;
+    if (zprefixlen == -1) continue ;
+    sprefixlen = shibari_util_get_prefixlen(domain.s, domain.len, s, len) ;
+    r = shibari_packet_add_glue_for_rr(pkt, tdb, domain.s, domain.len, sprefixlen == -1 ? zprefixlen : sprefixlen, sprefixlen == -1 ? zoffset : 0, loc, stamp) ;
+    if (r >= 0) return r ;
+  }
+  return 0 ;
+}