/*
* IFLA_AF_SPEC netlink attribute decoding check.
*
* Copyright (c) 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 <inttypes.h>
#include <stdio.h>
#include <stddef.h>
#include "test_nlattr.h"
#include <linux/if.h>
#include <linux/if_arp.h>
#ifdef HAVE_LINUX_IF_LINK_H
# include <linux/if_link.h>
#endif
#include <linux/rtnetlink.h>
#if !HAVE_DECL_IFLA_AF_SPEC
enum { IFLA_AF_SPEC = 26 };
#endif
#define XLAT_MACROS_ONLY
# include "xlat/rtnl_ifla_af_spec_inet_attrs.h"
# include "xlat/rtnl_ifla_af_spec_inet6_attrs.h"
#undef XLAT_MACROS_ONLY
#ifndef HAVE_STRUCT_IFLA_CACHEINFO
struct ifla_cacheinfo {
uint32_t max_reasm_len;
uint32_t tstamp;
uint32_t reachable_time;
uint32_t retrans_time;
};
#endif
#define IFLA_ATTR IFLA_AF_SPEC
#include "nlattr_ifla.h"
#define AF_SPEC_FUNCS(family_) \
static void \
init_##family_##_msg(struct nlmsghdr *const nlh, \
const unsigned int msg_len) \
{ \
init_ifinfomsg(nlh, msg_len); \
\
struct nlattr *nla = NLMSG_ATTR(nlh, hdrlen); \
nla += 1; \
SET_STRUCT(struct nlattr, nla, \
.nla_len = msg_len - NLMSG_SPACE(hdrlen) \
- NLA_HDRLEN, \
.nla_type = family_, \
); \
} \
\
static void \
print_##family_##_msg(const unsigned int msg_len) \
{ \
print_ifinfomsg(msg_len); \
printf(", {{nla_len=%u, nla_type=" #family_ "}", \
msg_len - NLMSG_SPACE(hdrlen) - NLA_HDRLEN); \
} \
/* end of AF_SPEC_FUNCS definition */
AF_SPEC_FUNCS(AF_INET)
AF_SPEC_FUNCS(AF_INET6)
static void
print_arr_val(uint32_t *val, size_t idx, const char *idx_str)
{
if (idx_str)
printf("[%s] = ", idx_str);
else
printf("[%zu] = ", idx);
printf("%d", *val);
}
static void
print_arr_uval(uint64_t *val, size_t idx, const char *idx_str)
{
if (idx_str)
printf("[%s] = ", idx_str);
else
printf("[%zu] = ", idx);
printf("%" PRIu64, *val);
}
static void
print_inet_conf_val(uint32_t *val, size_t idx)
{
static const char * const strs[] = {
"IPV4_DEVCONF_FORWARDING-1",
"IPV4_DEVCONF_MC_FORWARDING-1",
};
print_arr_val(val, idx, idx < ARRAY_SIZE(strs) ? strs[idx] : NULL);
}
static void
print_inet6_conf_val(uint32_t *val, size_t idx)
{
static const char * const strs[] = {
"DEVCONF_FORWARDING",
"DEVCONF_HOPLIMIT",
};
print_arr_val(val, idx, idx < ARRAY_SIZE(strs) ? strs[idx] : NULL);
}
static void
print_inet6_stats_val(uint64_t *val, size_t idx)
{
static const char * const strs[] = {
"IPSTATS_MIB_NUM",
"IPSTATS_MIB_INPKTS",
};
print_arr_uval(val, idx, idx < ARRAY_SIZE(strs) ? strs[idx] : NULL);
}
static void
print_icmp6_stats_val(uint64_t *val, size_t idx)
{
static const char * const strs[] = {
"ICMP6_MIB_NUM",
"ICMP6_MIB_INMSGS",
"ICMP6_MIB_INERRORS",
"ICMP6_MIB_OUTMSGS",
"ICMP6_MIB_OUTERRORS",
"ICMP6_MIB_CSUMERRORS",
"6 /* ICMP6_MIB_??? */",
};
print_arr_uval(val, idx, idx < ARRAY_SIZE(strs) ? strs[idx] : NULL);
}
int
main(void)
{
static const uint8_t unknown_msg[] = { 0xab, 0xac, 0xdb, 0xcd };
skip_if_unavailable("/proc/self/fd/");
const int fd = create_nl_socket(NETLINK_ROUTE);
const unsigned int hdrlen = sizeof(struct ifinfomsg);
void *nlh0 = midtail_alloc(NLMSG_SPACE(hdrlen), 3 * NLA_HDRLEN + 256);
static char pattern[4096];
fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
/* unknown AF_* */
TEST_NESTED_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_ifinfomsg, print_ifinfomsg,
AF_UNIX, pattern, unknown_msg,
printf("\"\\xab\\xac\\xdb\\xcd\""));
/* AF_INET */
TEST_NESTED_NLATTR_OBJECT_EX_(fd, nlh0, hdrlen,
init_AF_INET_msg, print_AF_INET_msg,
0, "IFLA_INET_UNSPEC", pattern,
unknown_msg, print_quoted_hex, 2,
printf("\"\\xab\\xac\\xdb\\xcd\""));
TEST_NESTED_NLATTR_OBJECT_EX_(fd, nlh0, hdrlen,
init_AF_INET_msg, print_AF_INET_msg,
2, "0x2 /* IFLA_INET_??? */", pattern,
unknown_msg, print_quoted_hex, 2,
printf("\"\\xab\\xac\\xdb\\xcd\""));
/* AF_INET: IFLA_INET_CONF */
uint32_t inet_conf_vals[] = { 0xdeadc0de, 0xda7aface };
TEST_NESTED_NLATTR_ARRAY_EX(fd, nlh0, hdrlen,
init_AF_INET_msg, print_AF_INET_msg,
IFLA_INET_CONF, pattern,
inet_conf_vals, 2, print_inet_conf_val);
/* AF_INET6 */
TEST_NESTED_NLATTR_OBJECT_EX_(fd, nlh0, hdrlen,
init_AF_INET6_msg, print_AF_INET6_msg,
0, "IFLA_INET6_UNSPEC", pattern,
unknown_msg, print_quoted_hex, 2,
printf("\"\\xab\\xac\\xdb\\xcd\""));
TEST_NESTED_NLATTR_OBJECT_EX_(fd, nlh0, hdrlen,
init_AF_INET6_msg, print_AF_INET6_msg,
9, "0x9 /* IFLA_INET6_??? */", pattern,
unknown_msg, print_quoted_hex, 2,
printf("\"\\xab\\xac\\xdb\\xcd\""));
/* AF_INET6: IFLA_INET6_FLAGS */
static const struct {
uint32_t flags;
const char *str;
} inet6_flags[] = {
{ 0xf, "0xf /* IF_??? */" },
{ 0x10, "IF_RS_SENT" },
{ 0xc0, "IF_RA_MANAGED|IF_RA_OTHERCONF" },
{ 0xdeadc0de, "IF_RS_SENT|IF_RA_MANAGED|IF_RA_OTHERCONF"
"|IF_READY|0x5eadc00e" },
};
for (size_t i = 0; i < ARRAY_SIZE(inet6_flags); i++) {
TEST_NESTED_NLATTR_OBJECT_EX_(fd, nlh0, hdrlen,
init_AF_INET6_msg,
print_AF_INET6_msg,
1, "IFLA_INET6_FLAGS", pattern,
inet6_flags[i].flags,
print_quoted_hex, 2,
printf("%s", inet6_flags[i].str));
}
/* AF_INET6: IFLA_INET6_CONF */
uint32_t inet6_conf_vals[] = { 0xdeadc0de, 0xda7aface };
TEST_NESTED_NLATTR_ARRAY_EX(fd, nlh0, hdrlen,
init_AF_INET6_msg, print_AF_INET6_msg,
IFLA_INET6_CONF, pattern,
inet6_conf_vals, 2, print_inet6_conf_val);
/* AF_INET6: IFLA_INET6_STATS */
uint64_t inet6_stats_vals[] = { 0xdeadc0deda7aface, 0xdec0deedbadc0ded };
TEST_NESTED_NLATTR_ARRAY_EX(fd, nlh0, hdrlen,
init_AF_INET6_msg, print_AF_INET6_msg,
IFLA_INET6_STATS, pattern,
inet6_stats_vals, 2, print_inet6_stats_val);
/* AF_INET6: IFLA_INET6_MCAST */
TEST_NESTED_NLATTR_OBJECT_EX_(fd, nlh0, hdrlen,
init_AF_INET6_msg, print_AF_INET6_msg,
4, "IFLA_INET6_MCAST", pattern,
unknown_msg, print_quoted_hex, 2,
printf("\"\\xab\\xac\\xdb\\xcd\""));
/* AF_INET6: IFLA_INET6_CACHEINFO */
static const struct ifla_cacheinfo ci = {
0xbadc0ded, 0xfacebeef, 0xdecafeed, 0xdeadfeed,
};
TEST_NESTED_NLATTR_OBJECT_EX_(fd, nlh0, hdrlen,
init_AF_INET6_msg, print_AF_INET6_msg,
5, "IFLA_INET6_CACHEINFO", pattern,
ci, print_quoted_hex, 2,
PRINT_FIELD_U("{", ci, max_reasm_len);
PRINT_FIELD_U(", ", ci, tstamp);
PRINT_FIELD_U(", ", ci, reachable_time);
PRINT_FIELD_U(", ", ci, retrans_time);
printf("}"));
/* AF_INET6: IFLA_INET6_ICMP6STATS */
uint64_t icmp6_stats_vals[] = {
0xdeadc0deda7aface, 0xdec0deedbadc0ded, 0xfacebeefdeadfeed,
0xdeadc0deda7afacd, 0xdec0deedbadc0dee, 0xfacebeefdeadfeef,
0xdeadc0deda7afacc
};
TEST_NESTED_NLATTR_ARRAY_EX(fd, nlh0, hdrlen,
init_AF_INET6_msg, print_AF_INET6_msg,
IFLA_INET6_ICMP6STATS, pattern,
icmp6_stats_vals, 2, print_icmp6_stats_val);
/* AF_INET6: IFLA_INET6_TOKEN */
uint8_t inet6_addr[16] = {
0xba, 0xdc, 0x0d, 0xed, 0xfa, 0xce, 0xbe, 0xef,
0xde, 0xca, 0xfe, 0xed, 0xde, 0xad, 0xfe, 0xed,
};
TEST_NESTED_NLATTR_OBJECT_EX_(fd, nlh0, hdrlen,
init_AF_INET6_msg, print_AF_INET6_msg,
7, "IFLA_INET6_TOKEN", pattern,
inet6_addr, print_quoted_hex, 2,
printf("badc:ded:face:beef:deca:feed"
":dead:feed"));
/* AF_INET6: IFLA_INET6_ */
static const struct {
uint8_t flags;
const char *str;
} agms[] = {
{ 0x0, "IN6_ADDR_GEN_MODE_EUI64" },
{ 0x3, "IN6_ADDR_GEN_MODE_RANDOM" },
{ 0x4, "0x4 /* IN6_ADDR_GEN_MODE_??? */" },
{ 0xff, "0xff /* IN6_ADDR_GEN_MODE_??? */" },
};
for (size_t i = 0; i < ARRAY_SIZE(agms); i++) {
TEST_NESTED_NLATTR_OBJECT_EX_(fd, nlh0, hdrlen,
init_AF_INET6_msg,
print_AF_INET6_msg,
8, "IFLA_INET6_ADDR_GEN_MODE",
pattern, agms[i].flags,
print_quoted_hex, 2,
printf("%s", agms[i].str));
}
puts("+++ exited with 0 +++");
return 0;
}