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/*
* Copyright (c) 2015-2016 Dmitry V. Levin <ldv@strace.io>
* Copyright (c) 2015-2021 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <netinet/in.h>
#if defined IP_ADD_MEMBERSHIP && defined IPV6_ADD_MEMBERSHIP \
&& defined IPV6_JOIN_ANYCAST
# include <limits.h>
# include <stdio.h>
# include <unistd.h>
# include <sys/socket.h>
# include <arpa/inet.h>
# include <net/if.h>
# define multi4addr "224.0.0.3"
# define multi6addr "ff01::c"
# define interface "127.0.0.1"
int
main(void)
{
TAIL_ALLOC_OBJECT_CONST_PTR(struct ip_mreq, m4);
TAIL_ALLOC_OBJECT_CONST_PTR(struct ipv6_mreq, m6);
int rc;
inet_pton(AF_INET, multi4addr, &m4->imr_multiaddr);
inet_pton(AF_INET, interface, &m4->imr_interface);
inet_pton(AF_INET6, multi6addr, &m6->ipv6mr_multiaddr);
m6->ipv6mr_interface = ifindex_lo();
if (!m6->ipv6mr_interface)
perror_msg_and_skip("lo");
(void) close(0);
if (socket(AF_INET, SOCK_DGRAM, 0))
perror_msg_and_skip("socket");
struct {
const int level;
const char *const str_level;
const int name;
const char *str_name;
const void *const val;
unsigned int size;
const char *const addr;
} opts[] = {
{
ARG_STR(SOL_IP), ARG_STR(IP_ADD_MEMBERSHIP),
m4, sizeof(*m4),
"{imr_multiaddr=inet_addr(\"" multi4addr
"\"), imr_interface=inet_addr(\"" interface "\")}"
},
{
ARG_STR(SOL_IP), ARG_STR(IP_DROP_MEMBERSHIP),
m4, sizeof(*m4),
"{imr_multiaddr=inet_addr(\"" multi4addr
"\"), imr_interface=inet_addr(\"" interface "\")}"
},
{
ARG_STR(SOL_IPV6), ARG_STR(IPV6_ADD_MEMBERSHIP),
m6, sizeof(*m6),
"{inet_pton(AF_INET6, \"" multi6addr
"\", &ipv6mr_multiaddr)"
", ipv6mr_interface=" IFINDEX_LO_STR "}"
},
{
ARG_STR(SOL_IPV6), ARG_STR(IPV6_DROP_MEMBERSHIP),
m6, sizeof(*m6),
"{inet_pton(AF_INET6, \"" multi6addr
"\", &ipv6mr_multiaddr)"
", ipv6mr_interface=" IFINDEX_LO_STR "}"
},
{
ARG_STR(SOL_IPV6), ARG_STR(IPV6_JOIN_ANYCAST),
m6, sizeof(*m6),
"{inet_pton(AF_INET6, \"" multi6addr
"\", &ipv6mr_multiaddr)"
", ipv6mr_interface=" IFINDEX_LO_STR "}"
},
{
ARG_STR(SOL_IPV6), ARG_STR(IPV6_LEAVE_ANYCAST),
m6, sizeof(*m6),
"{inet_pton(AF_INET6, \"" multi6addr
"\", &ipv6mr_multiaddr)"
", ipv6mr_interface=" IFINDEX_LO_STR "}"
}
};
for (unsigned int i = 0; i < ARRAY_SIZE(opts); ++i) {
/* optlen < 0, EINVAL */
rc = setsockopt(0, opts[i].level, opts[i].name,
opts[i].val, -1);
printf("setsockopt(0, %s, %s, %p, -1) = %s\n",
opts[i].str_level, opts[i].str_name,
opts[i].val, sprintrc(rc));
/* optlen < sizeof(struct), EINVAL */
rc = setsockopt(0, opts[i].level, opts[i].name,
opts[i].val, opts[i].size - 1);
printf("setsockopt(0, %s, %s, %p, %u) = %s\n",
opts[i].str_level, opts[i].str_name,
opts[i].val, opts[i].size - 1, sprintrc(rc));
/* optval EFAULT */
rc = setsockopt(0, opts[i].level, opts[i].name,
opts[i].val + 1, opts[i].size);
printf("setsockopt(0, %s, %s, %p, %u) = %s\n",
opts[i].str_level, opts[i].str_name,
opts[i].val + 1, opts[i].size, sprintrc(rc));
/* classic */
rc = setsockopt(0, opts[i].level, opts[i].name,
opts[i].val, opts[i].size);
printf("setsockopt(0, %s, %s, %s, %u) = %s\n",
opts[i].str_level, opts[i].str_name,
opts[i].addr, opts[i].size, sprintrc(rc));
/* optlen > sizeof(struct), shortened */
rc = setsockopt(0, opts[i].level, opts[i].name,
opts[i].val, INT_MAX);
printf("setsockopt(0, %s, %s, %s, %u) = %s\n",
opts[i].str_level, opts[i].str_name,
opts[i].addr, INT_MAX, sprintrc(rc));
}
puts("+++ exited with 0 +++");
return 0;
}
#else
SKIP_MAIN_UNDEFINED("IP_ADD_MEMBERSHIP && IPV6_ADD_MEMBERSHIP"
" && IPV6_JOIN_ANYCAST")
#endif
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