--- /dev/null
+/*
+ * 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, 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, 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, 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, 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, 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, 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, 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, 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, 2,
+ printf("%s", agms[i].str));
+ }
+
+
+ puts("+++ exited with 0 +++");
+ return 0;
+}
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