src: generate set members using integer_type in the appropriate byteorder

Rules with header fields that rely on the generic integer datatype
from sets are not matching, eg.

 nft add rule filter input udp length { 9 } counter

This set member is an integer represented in host byte order, which
obviously doesn't match the header field (in network byte order).

Since the integer datatype has no specific byteorder, we have to rely
on the expression byteorder instead when configuring the context,
before we evaluate the list of set members.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/src/evaluate.c b/src/evaluate.c
index 00e55b7d..07326607 100644
--- a/src/evaluate.c
+++ b/src/evaluate.c
@@ -238,6 +238,7 @@ static int expr_evaluate_value(struct eval_ctx *ctx, struct expr **expr)
 			mpz_clear(mask);
 			return -1;
 		}
+		(*expr)->byteorder = ctx->ectx.byteorder;
 		(*expr)->len = ctx->ectx.len;
 		mpz_clear(mask);
 		break;
@@ -261,7 +262,8 @@ static int expr_evaluate_value(struct eval_ctx *ctx, struct expr **expr)
  */
 static int expr_evaluate_primary(struct eval_ctx *ctx, struct expr **expr)
 {
-	expr_set_context(&ctx->ectx, (*expr)->dtype, (*expr)->len);
+	__expr_set_context(&ctx->ectx, (*expr)->dtype, (*expr)->byteorder,
+			   (*expr)->len);
 	return 0;
 }