tests: nft-rule-test: check for NFTNL_RULE_USERDATA

Modify nft-rule-test.c to check TLV attribute inclusion in nftnl_rule.

Signed-off-by: Carlos Falgueras García <carlosfg@riseup.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/tests/nft-rule-test.c b/tests/nft-rule-test.c
index dff9634209f5965ab2858e5bbf2ca4817b753e40..2f6e35f70b60e5279826e5a385265d7df1816f6f 100644 (file)
--- a/tests/nft-rule-test.c
+++ b/tests/nft-rule-test.c
@@ -15,6 +15,7 @@
 #include <netinet/in.h>
 #include <linux/netfilter/nf_tables.h>
 #include <libnftnl/rule.h>
+#include <libnftnl/udata.h>
 
 static int test_ok = 1;
 
@@ -26,6 +27,9 @@ static void print_err(const char *msg)
 
 static void cmp_nftnl_rule(struct nftnl_rule *a, struct nftnl_rule *b)
 {
+       const void *udata_a, *udata_b;
+       uint32_t len_a, len_b;
+
        if (nftnl_rule_get_u32(a, NFTNL_RULE_FAMILY) !=
            nftnl_rule_get_u32(b, NFTNL_RULE_FAMILY))
                print_err("Rule family mismatches");
@@ -47,10 +51,17 @@ static void cmp_nftnl_rule(struct nftnl_rule *a, struct nftnl_rule *b)
        if (nftnl_rule_get_u64(a, NFTNL_RULE_POSITION) !=
            nftnl_rule_get_u64(b, NFTNL_RULE_POSITION))
                print_err("Rule compat_position mismatches");
+
+       udata_a = nftnl_rule_get_data(a, NFTNL_RULE_USERDATA, &len_a);
+       udata_b = nftnl_rule_get_data(b, NFTNL_RULE_USERDATA, &len_b);
+
+       if (len_a != len_b || memcmp(udata_a, udata_b, len_a) != 0)
+               print_err("Rule userdata mismatches");
 }
 
 int main(int argc, char *argv[])
 {
+       struct nftnl_udata_buf *udata;
        struct nftnl_rule *a, *b;
        char buf[4096];
        struct nlmsghdr *nlh;
@@ -60,6 +71,13 @@ int main(int argc, char *argv[])
        if (a == NULL || b == NULL)
                print_err("OOM");
 
+       udata = nftnl_udata_buf_alloc(NFT_USERDATA_MAXLEN);
+       if (!udata)
+               print_err("OOM");
+
+       if (!nftnl_udata_put_strz(udata, 0, "hello world"))
+               print_err("User data too big");
+
        nftnl_rule_set_u32(a, NFTNL_RULE_FAMILY, AF_INET);
        nftnl_rule_set_str(a, NFTNL_RULE_TABLE, "table");
        nftnl_rule_set_str(a, NFTNL_RULE_CHAIN, "chain");
@@ -67,6 +85,9 @@ int main(int argc, char *argv[])
        nftnl_rule_set_u32(a, NFTNL_RULE_COMPAT_PROTO, 0x12345678);
        nftnl_rule_set_u32(a, NFTNL_RULE_COMPAT_FLAGS, 0x12345678);
        nftnl_rule_set_u64(a, NFTNL_RULE_POSITION, 0x1234567812345678);
+       nftnl_rule_set_data(a, NFTNL_RULE_USERDATA,
+                           nftnl_udata_buf_data(udata),
+                           nftnl_udata_buf_len(udata));
 
        nlh = nftnl_rule_nlmsg_build_hdr(buf, NFT_MSG_NEWRULE, AF_INET, 0, 1234);
        nftnl_rule_nlmsg_build_payload(nlh, a);