[PATCH v3 4/6] tests: check decoding of NETLINK_NETFILTER message types

[JingPiao Chen]

* tests/netlink_netfilter.c: New file.
* tests/gen_tests.in (netlink_netfilter): New entry.
* tests/pure_executables.list: Add netlink_netfilter.
* tests/.gitignore: Likewise.
---
 tests/.gitignore            |  1 +
 tests/gen_tests.in          |  1 +
 tests/netlink_netfilter.c   | 81 +++++++++++++++++++++++++++++++++++++++++++++
 tests/pure_executables.list |  1 +
 4 files changed, 84 insertions(+)
 create mode 100644 tests/netlink_netfilter.c

diff --git a/tests/.gitignore b/tests/.gitignore
index 8428c66..e4903aa 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -199,6 +199,7 @@ net-yy-netlink
 net-yy-unix
 netlink_audit
 netlink_inet_diag
+netlink_netfilter
 netlink_netlink_diag
 netlink_protocol
 netlink_route
diff --git a/tests/gen_tests.in b/tests/gen_tests.in
index 31244b5..745a301 100644
--- a/tests/gen_tests.in
+++ b/tests/gen_tests.in
@@ -186,6 +186,7 @@ net-icmp_filter	-e trace=getsockopt,setsockopt
 net-sockaddr	-a24 -e trace=connect
 netlink_protocol	-e trace=%network
 netlink_audit	+netlink_sock_diag.test
+netlink_netfilter	+netlink_sock_diag.test
 netlink_route	+netlink_sock_diag.test
 newfstatat	-a32 -v -P stat.sample -P /dev/full
 old_mmap	-a11 -e trace=mmap
diff --git a/tests/netlink_netfilter.c b/tests/netlink_netfilter.c
new file mode 100644
index 0000000..811585a
--- /dev/null
+++ b/tests/netlink_netfilter.c
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2017 JingPiao Chen <chenjingpiao at gmail.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "tests.h"
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <linux/netfilter/nfnetlink.h>
+#include <linux/netlink.h>
+
+static void
+test_nlmsg_type(const int fd)
+{
+	long rc;
+	struct nlmsghdr nlh = {
+		.nlmsg_len = sizeof(nlh),
+		.nlmsg_flags = NLM_F_REQUEST,
+	};
+
+#ifdef NFNL_MSG_BATCH_BEGIN
+	nlh.nlmsg_type = NFNL_MSG_BATCH_BEGIN;
+	rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0);
+	printf("sendto(%d, {{len=%u, type=NFNL_MSG_BATCH_BEGIN"
+	       ", flags=NLM_F_REQUEST, seq=0, pid=0}}"
+	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+	       fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc));
+
+	nlh.nlmsg_type = (NFNL_SUBSYS_CTNETLINK << 8) | NFNL_MSG_BATCH_BEGIN;
+	rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0);
+	printf("sendto(%d, {{len=%u, type=NFNL_SUBSYS_CTNETLINK<<8|%#x"
+	       ", flags=NLM_F_REQUEST, seq=0, pid=0}}"
+	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+	       fd, nlh.nlmsg_len, NFNL_MSG_BATCH_BEGIN,
+	       (unsigned) sizeof(nlh), sprintrc(rc));
+#endif
+
+	nlh.nlmsg_type = (NFNL_SUBSYS_CTNETLINK << 8);
+	rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0);
+	printf("sendto(%d, {{len=%u, type=NFNL_SUBSYS_CTNETLINK<<8|0"
+	       ", flags=NLM_F_REQUEST, seq=0, pid=0}}"
+	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+	       fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc));
+}
+
+int main(void)
+{
+	skip_if_unavailable("/proc/self/fd/");
+
+	int fd = create_nl_socket(NETLINK_NETFILTER);
+
+	test_nlmsg_type(fd);
+
+	printf("+++ exited with 0 +++\n");
+
+	return 0;
+}
diff --git a/tests/pure_executables.list b/tests/pure_executables.list
index 8f0ec6e..ffe0d17 100755
--- a/tests/pure_executables.list
+++ b/tests/pure_executables.list
@@ -166,6 +166,7 @@ net-yy-inet
 net-yy-netlink
 net-yy-unix
 netlink_audit
+netlink_netfilter
 netlink_protocol
 netlink_route
 netlink_sock_diag
-- 
2.7.4