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, 4 insertions, 0 deletions

diff --git a/src/mergesort.c b/src/mergesort.c
index 41f35856..152b0556 100644
--- a/src/mergesort.c
+++ b/src/mergesort.c
@@ -44,6 +44,10 @@ static void expr_msort_value(const struct expr *expr, mpz_t value)
 	case EXPR_CONCAT:
 		concat_expr_msort_value(expr, value);
 		break;
+	case EXPR_SET_ELEM_CATCHALL:
+		/* max value to ensure listing shows it in the last position */
+		mpz_bitmask(value, expr->len);
+		break;
 	default:
 		BUG("Unknown expression %s\n", expr_name(expr));
 	}