X-Git-Url: https://git.distorted.org.uk/~mdw/tripe/blobdiff_plain/7cd79da096ced70c89af673bc0c87990eaa68528..f43df819b3b11fa95a68f6feb58070268d40b1a8:/keyset.c

diff --git a/keyset.c b/keyset.c
index 9b804ea6..bb2397fc 100644
--- a/keyset.c
+++ b/keyset.c
@@ -250,30 +250,6 @@ static int dodecrypt(keyset *ks, unsigned ty, buf *b, buf *bb, uint32 *seq)
   return (0);
 }
 
-/* --- @dosequence@ --- *
- *
- * Arguments:	@keyset *ks@ = pointer to a keyset
- *		@uint32 seq@ = a sequence number from a packet
- *
- * Returns:	Zero if the sequence number is OK, nonzero if it's not.
- *
- * Use:		Checks a sequence number.  The data in the keyset which keeps
- *		track of valid sequence numbers is updated if the sequence
- *		number given is good.  It's assumed that the sequence number
- *		has already been checked for authenticity.
- */
-
-static int dosequence(keyset *ks, uint32 seq)
-{
-  switch (seq_check(&ks->iseq, seq)) {
-    case SEQ_OK: break;
-    case SEQ_OLD: a_warn("SYMM replay old-sequence"); return (-1);
-    case SEQ_REPLAY: a_warn("SYMM replay duplicated-sequence"); return (-1);
-    default: abort();
-  }
-  return (0);
-}
-
 /*----- Operations on a single keyset -------------------------------------*/
 
 /* --- @ks_drop@ --- *
@@ -468,7 +444,7 @@ int ks_decrypt(keyset *ks, unsigned ty, buf *b, buf *bb)
   if (!KEYOK(ks, now) ||
       buf_ensure(bb, BLEN(b)) ||
       dodecrypt(ks, ty, b, bb, &seq) ||
-      dosequence(ks, seq))
+      seq_check(&ks->iseq, seq, "SYMM"))
     return (-1);
   return (0);
 }
@@ -612,7 +588,7 @@ int ksl_decrypt(keyset **ksroot, unsigned ty, buf *b, buf *bb)
 		 ks->seq); )
 	ks->f &= ~KSF_LISTEN;
       }
-      return (dosequence(ks, seq));
+      return (seq_check(&ks->iseq, seq, "SYMM"));
     }
   }
   T( trace(T_KEYSET, "keyset: no matching keys, or incorrect MAC"); )