src: add set element catch-all support

Add a catchall expression (EXPR_SET_ELEM_CATCHALL).

Use the asterisk (*) to represent the catch-all set element, e.g.

 table x {
     set y {
	type ipv4_addr
	counter
	elements = { 1.2.3.4 counter packets 0 bytes 0, * counter packets 0 bytes 0 }
     }
 }

Special handling for segtree: zap the catch-all element from the set
element list and re-add it after processing.

Remove wildcard_expr deadcode in src/parser_bison.y

This patch also adds several tests for the tests/py and tests/shell
infrastructures.

Acked-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/evaluate.c b/src/evaluate.c
index b5dcdd35..95189180 100644
--- a/src/evaluate.c
+++ b/src/evaluate.c
@@ -2201,6 +2201,8 @@ static int expr_evaluate(struct eval_ctx *ctx, struct expr **expr)
 		return expr_evaluate_hash(ctx, expr);
 	case EXPR_XFRM:
 		return expr_evaluate_xfrm(ctx, expr);
+	case EXPR_SET_ELEM_CATCHALL:
+		return 0;
 	default:
 		BUG("unknown expression type %s\n", expr_name(*expr));
 	}