[PATCH nft 4/4] src: evaluate: catch invalid 'meta day' values in eval step

[Florian Westphal <fw@strlen.de>]

Signed-off-by: Florian Westphal <fw@strlen.de>
---
 src/evaluate.c      | 17 +++++++++++++----
 tests/py/any/meta.t |  4 ++++
 2 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/src/evaluate.c b/src/evaluate.c
index 8d5f5f8014b8..b8bcf4866d8d 100644
--- a/src/evaluate.c
+++ b/src/evaluate.c
@@ -1863,11 +1863,20 @@ static int expr_evaluate_meta(struct eval_ctx *ctx, struct expr **exprp)
 {
 	struct expr *meta = *exprp;
 
-	if (ctx->pctx.family != NFPROTO_INET &&
-	    meta->flags & EXPR_F_PROTOCOL &&
-	    meta->meta.key == NFT_META_NFPROTO)
-		return expr_error(ctx->msgs, meta,
+	switch (meta->meta.key) {
+	case NFT_META_NFPROTO:
+		if (ctx->pctx.family != NFPROTO_INET &&
+		    meta->flags & EXPR_F_PROTOCOL)
+			return expr_error(ctx->msgs, meta,
 					  "meta nfproto is only useful in the inet family");
+		break;
+	case NFT_META_TIME_DAY:
+		__expr_set_context(&ctx->ectx, meta->dtype, meta->byteorder,
+				   meta->len, 6);
+		return 0;
+	default:
+		break;
+	}
 
 	return expr_evaluate_primary(ctx, exprp);
 }
diff --git a/tests/py/any/meta.t b/tests/py/any/meta.t
index 5911b74ac060..86e5d258605d 100644
--- a/tests/py/any/meta.t
+++ b/tests/py/any/meta.t
@@ -218,3 +218,7 @@ meta hour "17:00:00" drop;ok;meta hour "17:00" drop
 meta hour "17:00:01" drop;ok
 meta hour "00:00" drop;ok
 meta hour "00:01" drop;ok
+
+meta time "meh";fail
+meta hour "24:00" drop;fail
+meta day 7 drop;fail
-- 
2.21.0