[PATCH v2 09/16] tests: check decoding of AF_INET diag attribute
JingPiao Chen
chenjingpiao at gmail.com
Sun Jun 18 05:18:36 UTC 2017
* tests/sock_diag_inet_attrs.c: New file.
* tests/gen_tests.in (sock_diag_inet_attrs): New entry.
* tests/pure_executables.list: Add sock_diag_inet_attrs.
* tests/.gitignore: Likewise.
---
tests/.gitignore | 1 +
tests/gen_tests.in | 1 +
tests/pure_executables.list | 1 +
tests/sock_diag_inet_attrs.c | 137 +++++++++++++++++++++++++++++++++++++++++++
4 files changed, 140 insertions(+)
create mode 100644 tests/sock_diag_inet_attrs.c
diff --git a/tests/.gitignore b/tests/.gitignore
index 59ce4c2..34d3909 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -344,6 +344,7 @@ sigprocmask
sigreturn
sigsuspend
sleep
+sock_diag_inet_attrs
sock_diag_netlink_attrs
sock_diag_packet_attrs
sock_diag_unix_attrs
diff --git a/tests/gen_tests.in b/tests/gen_tests.in
index c1f9985..5fc653c 100644
--- a/tests/gen_tests.in
+++ b/tests/gen_tests.in
@@ -295,6 +295,7 @@ sigpending -a15
sigprocmask -a34
sigreturn -esignal='!USR1'
sigsuspend -a19 -esignal=none
+sock_diag_inet_attrs +netlink_sock_diag.test
sock_diag_netlink_attrs +netlink_sock_diag.test
sock_diag_packet_attrs +netlink_sock_diag.test
sock_diag_unix_attrs +netlink_sock_diag.test
diff --git a/tests/pure_executables.list b/tests/pure_executables.list
index 2590bdf..df8937a 100755
--- a/tests/pure_executables.list
+++ b/tests/pure_executables.list
@@ -283,6 +283,7 @@ sigpending
sigprocmask
sigreturn
sigsuspend
+sock_diag_inet_attrs
sock_diag_netlink_attrs
sock_diag_packet_attrs
sock_diag_unix_attrs
diff --git a/tests/sock_diag_inet_attrs.c b/tests/sock_diag_inet_attrs.c
new file mode 100644
index 0000000..43e9bc7
--- /dev/null
+++ b/tests/sock_diag_inet_attrs.c
@@ -0,0 +1,137 @@
+/*
+ * Copyright (c) 2017 JingPiao Chen <chenjingpiao at gmail.com>
+ * Copyright (c) 2017 The strace developers.
+ * 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 <sys/socket.h>
+#include <netinet/tcp.h>
+#include <arpa/inet.h>
+#include <linux/inet_diag.h>
+#include <linux/netlink.h>
+#include <linux/rtnetlink.h>
+#include <linux/sock_diag.h>
+
+#if !defined NETLINK_SOCK_DIAG && defined NETLINK_INET_DIAG
+# define NETLINK_SOCK_DIAG NETLINK_INET_DIAG
+#endif
+
+static void
+test_inet_diag_none(int fd)
+{
+ const char address[] = "12.34.56.78";
+ struct nlmsghdr *nlh;
+ struct inet_diag_msg *msg;
+ struct nlattr *nla;
+ void *const nlh0 = tail_alloc(NLMSG_SPACE(sizeof(*msg)));
+ int nla_len;
+ long rc;
+
+ /* struct nlattr */
+ nla_len = NLA_HDRLEN;
+ nlh = nlh0 - nla_len;
+ *nlh = (struct nlmsghdr) {
+ .nlmsg_len = NLMSG_SPACE(sizeof(*msg)) + nla_len,
+ .nlmsg_type = SOCK_DIAG_BY_FAMILY,
+ .nlmsg_flags = NLM_F_DUMP
+ };
+
+ msg = NLMSG_DATA(nlh);
+ *msg = (struct inet_diag_msg) {
+ .idiag_family = AF_INET,
+ .idiag_state = TCP_LISTEN
+ };
+ nlh->nlmsg_len = NLMSG_SPACE(sizeof(*msg)) + nla_len;
+
+ nla = (void *) nlh + NLMSG_SPACE(sizeof(*msg));
+ *nla = (struct nlattr) {
+ .nla_len = nla_len,
+ .nla_type = INET_DIAG_NONE
+ };
+
+ if (!inet_pton(AF_INET, address, msg->id.idiag_src))
+ perror_msg_and_skip("sendto");
+ if (!inet_pton(AF_INET, address, msg->id.idiag_dst))
+ perror_msg_and_skip("sendto");
+
+ rc = sendto(fd, nlh, nlh->nlmsg_len, MSG_DONTWAIT, NULL, 0);
+
+ printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+ ", flags=NLM_F_DUMP, seq=0, pid=0}, {idiag_family=AF_INET"
+ ", idiag_state=TCP_LISTEN, idiag_timer=0, idiag_retrans=0"
+ ", id={idiag_sport=htons(0), idiag_dport=htons(0)"
+ ", inet_pton(AF_INET, \"%s\", &idiag_src)"
+ ", inet_pton(AF_INET, \"%s\", &idiag_dst)"
+ ", idiag_if=0, idiag_cookie=[0, 0]}, idiag_expires=0"
+ ", idiag_rqueue=0, idiag_wqueue=0, idiag_uid=0"
+ ", idiag_inode=0}, {{nla_len=%u, nla_type=INET_DIAG_NONE}}}"
+ ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, nlh->nlmsg_len, address, address, nla->nla_len,
+ nlh->nlmsg_len, sprintrc(rc));
+
+ /* struct nlattr and some data */
+ nla_len = NLA_HDRLEN + 4;
+ memmove(nlh0 - nla_len, nlh, NLMSG_SPACE(sizeof(*msg)));
+ nlh = nlh0 - nla_len;
+ nlh->nlmsg_len = NLMSG_SPACE(sizeof(*msg)) + nla_len;
+
+ nla = (void *) nlh + NLMSG_SPACE(sizeof(*msg));
+ *nla = (struct nlattr) {
+ .nla_len = nla_len,
+ .nla_type = INET_DIAG_NONE
+ };
+ memcpy(RTA_DATA(nla), "1234", 4);
+
+ rc = sendto(fd, nlh, nlh->nlmsg_len, MSG_DONTWAIT, NULL, 0);
+
+ printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+ ", flags=NLM_F_DUMP, seq=0, pid=0}, {idiag_family=AF_INET"
+ ", idiag_state=TCP_LISTEN, idiag_timer=0, idiag_retrans=0"
+ ", id={idiag_sport=htons(0), idiag_dport=htons(0)"
+ ", inet_pton(AF_INET, \"%s\", &idiag_src)"
+ ", inet_pton(AF_INET, \"%s\", &idiag_dst)"
+ ", idiag_if=0, idiag_cookie=[0, 0]}, idiag_expires=0"
+ ", idiag_rqueue=0, idiag_wqueue=0, idiag_uid=0"
+ ", idiag_inode=0}, {{nla_len=%u, nla_type=INET_DIAG_NONE}"
+ ", \"1234\"}}, %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, nlh->nlmsg_len, address, address, nla->nla_len,
+ nlh->nlmsg_len, sprintrc(rc));
+}
+
+int main(void)
+{
+ skip_if_unavailable("/proc/self/fd/");
+
+ int fd = create_nl_socket(NETLINK_SOCK_DIAG);
+
+ test_inet_diag_none(fd);
+
+ printf("+++ exited with 0 +++\n");
+
+ return 0;
+}
--
2.7.4
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