1 /* 2 * Copyright (c) 2017 JingPiao Chen <chenjingpiao (at) gmail.com> 3 * Copyright (c) 2017 The strace developers. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include "tests.h" 30 31 #include <stdio.h> 32 #include <netinet/in.h> 33 #include <arpa/inet.h> 34 #include "test_nlattr.h" 35 #ifdef HAVE_LINUX_NEIGHBOUR_H 36 # include <linux/neighbour.h> 37 #endif 38 #include <linux/rtnetlink.h> 39 40 #define NDA_PORT 6 41 42 static void 43 init_ndmsg(struct nlmsghdr *const nlh, const unsigned int msg_len) 44 { 45 SET_STRUCT(struct nlmsghdr, nlh, 46 .nlmsg_len = msg_len, 47 .nlmsg_type = RTM_GETNEIGH, 48 .nlmsg_flags = NLM_F_DUMP 49 ); 50 51 struct ndmsg *const msg = NLMSG_DATA(nlh); 52 SET_STRUCT(struct ndmsg, msg, 53 .ndm_family = AF_UNIX, 54 .ndm_ifindex = ifindex_lo(), 55 .ndm_state = NUD_PERMANENT, 56 .ndm_flags = NTF_PROXY, 57 .ndm_type = RTN_UNSPEC 58 ); 59 } 60 61 static void 62 print_ndmsg(const unsigned int msg_len) 63 { 64 printf("{len=%u, type=RTM_GETNEIGH, flags=NLM_F_DUMP" 65 ", seq=0, pid=0}, {ndm_family=AF_UNIX" 66 ", ndm_ifindex=" IFINDEX_LO_STR 67 ", ndm_state=NUD_PERMANENT" 68 ", ndm_flags=NTF_PROXY" 69 ", ndm_type=RTN_UNSPEC}", 70 msg_len); 71 } 72 73 int 74 main(void) 75 { 76 skip_if_unavailable("/proc/self/fd/"); 77 78 const int fd = create_nl_socket(NETLINK_ROUTE); 79 const unsigned int hdrlen = sizeof(struct ndmsg); 80 void *nlh0 = tail_alloc(NLMSG_SPACE(hdrlen)); 81 82 static char pattern[4096]; 83 fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1); 84 85 const unsigned int nla_type = 0xffff & NLA_TYPE_MASK; 86 char nla_type_str[256]; 87 sprintf(nla_type_str, "%#x /* NDA_??? */", nla_type); 88 TEST_NLATTR_(fd, nlh0, hdrlen, 89 init_ndmsg, print_ndmsg, 90 nla_type, nla_type_str, 91 4, pattern, 4, 92 print_quoted_hex(pattern, 4)); 93 94 TEST_NLATTR(fd, nlh0, hdrlen, 95 init_ndmsg, print_ndmsg, 96 NDA_DST, 4, pattern, 4, 97 print_quoted_hex(pattern, 4)); 98 99 static const struct nda_cacheinfo ci = { 100 .ndm_confirmed = 0xabcdedad, 101 .ndm_used = 0xbcdaedad, 102 .ndm_updated = 0xcdbadeda, 103 .ndm_refcnt = 0xdeadbeda 104 }; 105 106 TEST_NLATTR_OBJECT(fd, nlh0, hdrlen, 107 init_ndmsg, print_ndmsg, 108 NDA_CACHEINFO, pattern, ci, 109 PRINT_FIELD_U("{", ci, ndm_confirmed); 110 PRINT_FIELD_U(", ", ci, ndm_used); 111 PRINT_FIELD_U(", ", ci, ndm_updated); 112 PRINT_FIELD_U(", ", ci, ndm_refcnt); 113 printf("}")); 114 115 const uint16_t port = 0xabcd; 116 TEST_NLATTR_OBJECT(fd, nlh0, hdrlen, 117 init_ndmsg, print_ndmsg, 118 NDA_PORT, pattern, port, 119 printf("htons(%u)", ntohs(port))); 120 121 puts("+++ exited with 0 +++"); 122 return 0; 123 } 124
