323 lines
9.4 KiB
C
323 lines
9.4 KiB
C
/*
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* IFLA_AF_SPEC netlink attribute decoding check.
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*
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* Copyright (c) 2018 The strace developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "tests.h"
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#include <inttypes.h>
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#include <stdio.h>
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#include <stddef.h>
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#include "test_nlattr.h"
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#include <linux/if.h>
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#include <linux/if_arp.h>
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#ifdef HAVE_LINUX_IF_LINK_H
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# include <linux/if_link.h>
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#endif
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#include <linux/rtnetlink.h>
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#if !HAVE_DECL_IFLA_AF_SPEC
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enum { IFLA_AF_SPEC = 26 };
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#endif
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#define XLAT_MACROS_ONLY
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# include "xlat/rtnl_ifla_af_spec_inet_attrs.h"
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# include "xlat/rtnl_ifla_af_spec_inet6_attrs.h"
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#undef XLAT_MACROS_ONLY
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#ifndef HAVE_STRUCT_IFLA_CACHEINFO
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struct ifla_cacheinfo {
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uint32_t max_reasm_len;
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uint32_t tstamp;
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uint32_t reachable_time;
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uint32_t retrans_time;
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};
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#endif
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#define IFLA_ATTR IFLA_AF_SPEC
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#include "nlattr_ifla.h"
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#define AF_SPEC_FUNCS(family_) \
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static void \
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init_##family_##_msg(struct nlmsghdr *const nlh, \
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const unsigned int msg_len) \
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{ \
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init_ifinfomsg(nlh, msg_len); \
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\
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struct nlattr *nla = NLMSG_ATTR(nlh, hdrlen); \
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nla += 1; \
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SET_STRUCT(struct nlattr, nla, \
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.nla_len = msg_len - NLMSG_SPACE(hdrlen) \
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- NLA_HDRLEN, \
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.nla_type = family_, \
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); \
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} \
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\
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static void \
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print_##family_##_msg(const unsigned int msg_len) \
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{ \
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print_ifinfomsg(msg_len); \
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printf(", {{nla_len=%u, nla_type=" #family_ "}", \
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msg_len - NLMSG_SPACE(hdrlen) - NLA_HDRLEN); \
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} \
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/* end of AF_SPEC_FUNCS definition */
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AF_SPEC_FUNCS(AF_INET)
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AF_SPEC_FUNCS(AF_INET6)
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static void
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print_arr_val(uint32_t *val, size_t idx, const char *idx_str)
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{
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if (idx_str)
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printf("[%s] = ", idx_str);
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else
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printf("[%zu] = ", idx);
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printf("%d", *val);
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}
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static void
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print_arr_uval(uint64_t *val, size_t idx, const char *idx_str)
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{
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if (idx_str)
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printf("[%s] = ", idx_str);
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else
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printf("[%zu] = ", idx);
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printf("%" PRIu64, *val);
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}
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static void
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print_inet_conf_val(uint32_t *val, size_t idx)
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{
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static const char * const strs[] = {
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"IPV4_DEVCONF_FORWARDING-1",
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"IPV4_DEVCONF_MC_FORWARDING-1",
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};
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print_arr_val(val, idx, idx < ARRAY_SIZE(strs) ? strs[idx] : NULL);
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}
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static void
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print_inet6_conf_val(uint32_t *val, size_t idx)
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{
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static const char * const strs[] = {
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"DEVCONF_FORWARDING",
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"DEVCONF_HOPLIMIT",
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};
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print_arr_val(val, idx, idx < ARRAY_SIZE(strs) ? strs[idx] : NULL);
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}
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static void
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print_inet6_stats_val(uint64_t *val, size_t idx)
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{
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static const char * const strs[] = {
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"IPSTATS_MIB_NUM",
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"IPSTATS_MIB_INPKTS",
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};
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print_arr_uval(val, idx, idx < ARRAY_SIZE(strs) ? strs[idx] : NULL);
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}
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static void
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print_icmp6_stats_val(uint64_t *val, size_t idx)
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{
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static const char * const strs[] = {
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"ICMP6_MIB_NUM",
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"ICMP6_MIB_INMSGS",
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"ICMP6_MIB_INERRORS",
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"ICMP6_MIB_OUTMSGS",
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"ICMP6_MIB_OUTERRORS",
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"ICMP6_MIB_CSUMERRORS",
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"6 /* ICMP6_MIB_??? */",
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};
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print_arr_uval(val, idx, idx < ARRAY_SIZE(strs) ? strs[idx] : NULL);
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}
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int
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main(void)
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{
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static const uint8_t unknown_msg[] = { 0xab, 0xac, 0xdb, 0xcd };
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skip_if_unavailable("/proc/self/fd/");
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const int fd = create_nl_socket(NETLINK_ROUTE);
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const unsigned int hdrlen = sizeof(struct ifinfomsg);
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void *nlh0 = midtail_alloc(NLMSG_SPACE(hdrlen), 3 * NLA_HDRLEN + 256);
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static char pattern[4096];
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fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
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/* unknown AF_* */
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TEST_NESTED_NLATTR_OBJECT(fd, nlh0, hdrlen,
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init_ifinfomsg, print_ifinfomsg,
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AF_UNIX, pattern, unknown_msg,
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printf("\"\\xab\\xac\\xdb\\xcd\""));
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/* AF_INET */
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TEST_NESTED_NLATTR_OBJECT_EX_(fd, nlh0, hdrlen,
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init_AF_INET_msg, print_AF_INET_msg,
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0, "IFLA_INET_UNSPEC", pattern,
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unknown_msg, print_quoted_hex, 2,
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printf("\"\\xab\\xac\\xdb\\xcd\""));
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TEST_NESTED_NLATTR_OBJECT_EX_(fd, nlh0, hdrlen,
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init_AF_INET_msg, print_AF_INET_msg,
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2, "0x2 /* IFLA_INET_??? */", pattern,
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unknown_msg, print_quoted_hex, 2,
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printf("\"\\xab\\xac\\xdb\\xcd\""));
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/* AF_INET: IFLA_INET_CONF */
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uint32_t inet_conf_vals[] = { 0xdeadc0de, 0xda7aface };
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TEST_NESTED_NLATTR_ARRAY_EX(fd, nlh0, hdrlen,
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init_AF_INET_msg, print_AF_INET_msg,
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IFLA_INET_CONF, pattern,
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inet_conf_vals, 2, print_inet_conf_val);
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/* AF_INET6 */
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TEST_NESTED_NLATTR_OBJECT_EX_(fd, nlh0, hdrlen,
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init_AF_INET6_msg, print_AF_INET6_msg,
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0, "IFLA_INET6_UNSPEC", pattern,
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unknown_msg, print_quoted_hex, 2,
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printf("\"\\xab\\xac\\xdb\\xcd\""));
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TEST_NESTED_NLATTR_OBJECT_EX_(fd, nlh0, hdrlen,
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init_AF_INET6_msg, print_AF_INET6_msg,
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9, "0x9 /* IFLA_INET6_??? */", pattern,
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unknown_msg, print_quoted_hex, 2,
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printf("\"\\xab\\xac\\xdb\\xcd\""));
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/* AF_INET6: IFLA_INET6_FLAGS */
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static const struct {
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uint32_t flags;
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const char *str;
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} inet6_flags[] = {
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{ 0xf, "0xf /* IF_??? */" },
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{ 0x10, "IF_RS_SENT" },
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{ 0xc0, "IF_RA_MANAGED|IF_RA_OTHERCONF" },
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{ 0xdeadc0de, "IF_RS_SENT|IF_RA_MANAGED|IF_RA_OTHERCONF"
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"|IF_READY|0x5eadc00e" },
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};
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for (size_t i = 0; i < ARRAY_SIZE(inet6_flags); i++) {
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TEST_NESTED_NLATTR_OBJECT_EX_(fd, nlh0, hdrlen,
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init_AF_INET6_msg,
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print_AF_INET6_msg,
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1, "IFLA_INET6_FLAGS", pattern,
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inet6_flags[i].flags,
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print_quoted_hex, 2,
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printf("%s", inet6_flags[i].str));
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}
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/* AF_INET6: IFLA_INET6_CONF */
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uint32_t inet6_conf_vals[] = { 0xdeadc0de, 0xda7aface };
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TEST_NESTED_NLATTR_ARRAY_EX(fd, nlh0, hdrlen,
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init_AF_INET6_msg, print_AF_INET6_msg,
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IFLA_INET6_CONF, pattern,
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inet6_conf_vals, 2, print_inet6_conf_val);
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/* AF_INET6: IFLA_INET6_STATS */
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uint64_t inet6_stats_vals[] = { 0xdeadc0deda7aface, 0xdec0deedbadc0ded };
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TEST_NESTED_NLATTR_ARRAY_EX(fd, nlh0, hdrlen,
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init_AF_INET6_msg, print_AF_INET6_msg,
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IFLA_INET6_STATS, pattern,
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inet6_stats_vals, 2, print_inet6_stats_val);
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/* AF_INET6: IFLA_INET6_MCAST */
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TEST_NESTED_NLATTR_OBJECT_EX_(fd, nlh0, hdrlen,
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init_AF_INET6_msg, print_AF_INET6_msg,
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4, "IFLA_INET6_MCAST", pattern,
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unknown_msg, print_quoted_hex, 2,
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printf("\"\\xab\\xac\\xdb\\xcd\""));
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/* AF_INET6: IFLA_INET6_CACHEINFO */
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static const struct ifla_cacheinfo ci = {
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0xbadc0ded, 0xfacebeef, 0xdecafeed, 0xdeadfeed,
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};
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TEST_NESTED_NLATTR_OBJECT_EX_(fd, nlh0, hdrlen,
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init_AF_INET6_msg, print_AF_INET6_msg,
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5, "IFLA_INET6_CACHEINFO", pattern,
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ci, print_quoted_hex, 2,
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PRINT_FIELD_U("{", ci, max_reasm_len);
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PRINT_FIELD_U(", ", ci, tstamp);
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PRINT_FIELD_U(", ", ci, reachable_time);
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PRINT_FIELD_U(", ", ci, retrans_time);
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printf("}"));
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/* AF_INET6: IFLA_INET6_ICMP6STATS */
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uint64_t icmp6_stats_vals[] = {
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0xdeadc0deda7aface, 0xdec0deedbadc0ded, 0xfacebeefdeadfeed,
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0xdeadc0deda7afacd, 0xdec0deedbadc0dee, 0xfacebeefdeadfeef,
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0xdeadc0deda7afacc
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};
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TEST_NESTED_NLATTR_ARRAY_EX(fd, nlh0, hdrlen,
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init_AF_INET6_msg, print_AF_INET6_msg,
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IFLA_INET6_ICMP6STATS, pattern,
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icmp6_stats_vals, 2, print_icmp6_stats_val);
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/* AF_INET6: IFLA_INET6_TOKEN */
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uint8_t inet6_addr[16] = {
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0xba, 0xdc, 0x0d, 0xed, 0xfa, 0xce, 0xbe, 0xef,
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0xde, 0xca, 0xfe, 0xed, 0xde, 0xad, 0xfe, 0xed,
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};
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TEST_NESTED_NLATTR_OBJECT_EX_(fd, nlh0, hdrlen,
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init_AF_INET6_msg, print_AF_INET6_msg,
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7, "IFLA_INET6_TOKEN", pattern,
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inet6_addr, print_quoted_hex, 2,
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printf("badc:ded:face:beef:deca:feed"
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":dead:feed"));
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/* AF_INET6: IFLA_INET6_ */
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static const struct {
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uint8_t flags;
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const char *str;
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} agms[] = {
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{ 0x0, "IN6_ADDR_GEN_MODE_EUI64" },
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{ 0x3, "IN6_ADDR_GEN_MODE_RANDOM" },
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{ 0x4, "0x4 /* IN6_ADDR_GEN_MODE_??? */" },
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{ 0xff, "0xff /* IN6_ADDR_GEN_MODE_??? */" },
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};
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for (size_t i = 0; i < ARRAY_SIZE(agms); i++) {
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TEST_NESTED_NLATTR_OBJECT_EX_(fd, nlh0, hdrlen,
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init_AF_INET6_msg,
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print_AF_INET6_msg,
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8, "IFLA_INET6_ADDR_GEN_MODE",
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pattern, agms[i].flags,
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print_quoted_hex, 2,
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printf("%s", agms[i].str));
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}
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puts("+++ exited with 0 +++");
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return 0;
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}
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