json: add set statement list support

When listing a set with statements with JSON support, the statements were
ignored.

Output example:

{
  "set": {
    "op": "add",
    "elem": {
      "payload": {
        "protocol": "ip",
        "field": "saddr"
      }
    },
    "stmt": [
      {
        "limit": {
          "rate": 10,
          "burst": 5,
          "per": "second"
        }
      },
      {
        "counter": {
          "packets": 0,
          "bytes": 0
        }
      }
    ],
    "set": "@my_ssh_meter"
  }
}

Link: https://bugzilla.netfilter.org/show_bug.cgi?id=1495
Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

2 files changed, 21 insertions, 0 deletions

diff --git a/tests/shell/testcases/json/0001set_statements_0 b/tests/shell/testcases/json/0001set_statements_0
new file mode 100755
index 00000000..1c72d35b
--- /dev/null
+++ b/tests/shell/testcases/json/0001set_statements_0
@@ -0,0 +1,9 @@
+#!/bin/bash
+
+set -e
+
+$NFT flush ruleset
+
+RULESET='{"nftables": [{"metainfo": {"version": "1.0.5", "release_name": "Lester Gooch #4", "json_schema_version": 1}}, {"table": {"family": "ip", "name": "testt", "handle": 3}}, {"set": {"family": "ip", "name": "ssh_meter", "table": "testt", "type": "ipv4_addr", "handle": 2, "size": 65535}}, {"chain": {"family": "ip", "table": "testt", "name": "testc", "handle": 1, "type": "filter", "hook": "input", "prio": 0, "policy": "accept"}}, {"rule": {"family": "ip", "table": "testt", "chain": "testc", "handle": 3, "expr": [{"match": {"op": "==", "left": {"payload": {"protocol": "tcp", "field": "dport"}}, "right": 22}}, {"match": {"op": "in", "left": {"ct": {"key": "state"}}, "right": "new"}}, {"set": {"op": "add", "elem": {"payload": {"protocol": "ip", "field": "saddr"}}, "stmt": [{"limit": {"rate": 10, "burst": 5, "per": "second"}}], "set": "@ssh_meter"}}, {"accept": null}]}}]}'
+
+$NFT -j -f - <<< $RULESET
diff --git a/tests/shell/testcases/json/dumps/0001set_statements_0.nft b/tests/shell/testcases/json/dumps/0001set_statements_0.nft
new file mode 100644
index 00000000..ee4a8670
--- /dev/null
+++ b/tests/shell/testcases/json/dumps/0001set_statements_0.nft
@@ -0,0 +1,12 @@
+table ip testt {
+	set ssh_meter {
+		type ipv4_addr
+		size 65535
+		flags dynamic
+	}
+
+	chain testc {
+		type filter hook input priority filter; policy accept;
+		tcp dport 22 ct state new add @ssh_meter { ip saddr limit rate 10/second } accept
+	}
+}