| /* |
| * Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com> |
| * Copyright (c) 2017-2018 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 <arpa/inet.h> |
| #include <net/if.h> |
| #include <netinet/tcp.h> |
| #include "test_nlattr.h" |
| #include <linux/inet_diag.h> |
| #include <linux/rtnetlink.h> |
| #include <linux/sock_diag.h> |
| |
| static const char address[] = "10.11.12.13"; |
| |
| static void |
| init_inet_diag_req(struct nlmsghdr *const nlh, const unsigned int msg_len) |
| { |
| SET_STRUCT(struct nlmsghdr, nlh, |
| .nlmsg_len = msg_len, |
| .nlmsg_type = TCPDIAG_GETSOCK, |
| .nlmsg_flags = NLM_F_REQUEST |
| ); |
| |
| struct inet_diag_req *const req = NLMSG_DATA(nlh); |
| SET_STRUCT(struct inet_diag_req, req, |
| .idiag_family = AF_INET, |
| .idiag_ext = 1 << (INET_DIAG_TOS - 1), |
| .idiag_states = 1 << TCP_LAST_ACK, |
| .id.idiag_if = ifindex_lo() |
| ); |
| |
| if (!inet_pton(AF_INET, address, req->id.idiag_src) || |
| !inet_pton(AF_INET, address, req->id.idiag_dst)) |
| perror_msg_and_skip("inet_pton"); |
| } |
| |
| static void |
| print_inet_diag_req(const unsigned int msg_len) |
| { |
| printf("{len=%u, type=TCPDIAG_GETSOCK, flags=NLM_F_REQUEST" |
| ", seq=0, pid=0}, {idiag_family=AF_INET" |
| ", idiag_src_len=0, idiag_dst_len=0" |
| ", idiag_ext=1<<(INET_DIAG_TOS-1)" |
| ", id={idiag_sport=htons(0), idiag_dport=htons(0)" |
| ", idiag_src=inet_addr(\"%s\")" |
| ", idiag_dst=inet_addr(\"%s\")" |
| ", idiag_if=" IFINDEX_LO_STR |
| ", idiag_cookie=[0, 0]}" |
| ", idiag_states=1<<TCP_LAST_ACK, idiag_dbs=0}", |
| msg_len, address, address); |
| } |
| |
| int |
| main(void) |
| { |
| skip_if_unavailable("/proc/self/fd/"); |
| |
| int fd = create_nl_socket(NETLINK_SOCK_DIAG); |
| const unsigned int hdrlen = sizeof(struct inet_diag_req); |
| void *nlh0 = midtail_alloc(NLMSG_SPACE(hdrlen), NLA_HDRLEN + 4); |
| |
| static char pattern[4096]; |
| fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1); |
| |
| char nla_type_str[256]; |
| sprintf(nla_type_str, "%#x /* INET_DIAG_REQ_??? */", |
| INET_DIAG_REQ_BYTECODE + 1); |
| TEST_NLATTR_(fd, nlh0, hdrlen, |
| init_inet_diag_req, print_inet_diag_req, |
| INET_DIAG_REQ_BYTECODE + 1, nla_type_str, |
| 4, pattern, 4, |
| print_quoted_hex(pattern, 4)); |
| |
| puts("+++ exited with 0 +++"); |
| return 0; |
| } |