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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/***
Copyright © 2017 Intel Corporation. All rights reserved.
***/
#include <netinet/icmp6.h>
#include <arpa/inet.h>
#include <unistd.h>
#include "sd-radv.h"
#include "alloc-util.h"
#include "hexdecoct.h"
#include "icmp6-test-util.h"
#include "radv-internal.h"
#include "socket-util.h"
#include "strv.h"
#include "tests.h"
static struct ether_addr mac_addr = {
.ether_addr_octet = { 0x78, 0x2b, 0xcb, 0xb3, 0x6d, 0x53 }
};
static bool test_stopped;
static struct {
struct in6_addr address;
unsigned char prefixlen;
uint32_t valid;
uint32_t preferred;
bool successful;
} prefix[] = {
{ { { { 0x20, 0x01, 0x0d, 0xb8, 0xde, 0xad, 0xbe, 0xef,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 64,
500, 440, true },
{ { { { 0x20, 0x01, 0x0d, 0xb8, 0x0b, 0x16, 0xd0, 0x0d,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 64,
/* indicate default valid and preferred lifetimes for the test code */
0, 0, true },
{ { { { 0x20, 0x01, 0x0d, 0xb8, 0x0b, 0x16, 0xd0, 0x0d,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 58,
0, 0,
/* indicate that this prefix already exists */
false },
{ { { { 0x20, 0x01, 0x0d, 0xb8, 0x0b, 0x16, 0xd0, 0x0d,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 120,
0, 0,
/* indicate that this prefix already exists */
false },
{ { { { 0x20, 0x01, 0x0d, 0xb8, 0x0b, 0x16, 0xd0, 0x0d,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 12,
0, 0,
/* indicate that this prefix already exists */
false },
{ { { { 0x20, 0x01, 0x0d, 0xb8, 0xc0, 0x01, 0x0d, 0xad,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 48,
0, 0, true },
{ { { { 0x20, 0x01, 0x0d, 0xb8, 0xc0, 0x01, 0x0d, 0xad,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 60,
0, 0,
/* indicate that this prefix already exists */
false },
};
static const struct in6_addr test_rdnss = { { { 0x20, 0x01, 0x0d, 0xb8,
0xde, 0xad, 0xbe, 0xef,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x01 } } };
static const char *test_dnssl[] = { "lab.intra",
NULL };
TEST(radv) {
sd_radv *ra;
assert_se(sd_radv_new(&ra) >= 0);
assert_se(ra);
ASSERT_RETURN_EXPECTED_SE(sd_radv_set_ifindex(NULL, 0) < 0);
ASSERT_RETURN_EXPECTED_SE(sd_radv_set_ifindex(ra, 0) < 0);
ASSERT_RETURN_EXPECTED_SE(sd_radv_set_ifindex(ra, -1) < 0);
ASSERT_RETURN_EXPECTED_SE(sd_radv_set_ifindex(ra, -2) < 0);
assert_se(sd_radv_set_ifindex(ra, 42) >= 0);
/* header */
ASSERT_RETURN_EXPECTED_SE(sd_radv_set_hop_limit(NULL, 0) < 0);
assert_se(sd_radv_set_hop_limit(ra, 0) >= 0);
assert_se(sd_radv_set_hop_limit(ra, ~0) >= 0);
ASSERT_RETURN_EXPECTED_SE(sd_radv_set_router_lifetime(NULL, 0) < 0);
assert_se(sd_radv_set_router_lifetime(ra, 0) >= 0);
assert_se(sd_radv_set_router_lifetime(ra, USEC_INFINITY) < 0);
assert_se(sd_radv_set_router_lifetime(ra, USEC_PER_YEAR) < 0);
assert_se(sd_radv_set_router_lifetime(ra, 300 * USEC_PER_SEC) >= 0);
ASSERT_RETURN_EXPECTED_SE(sd_radv_set_preference(NULL, 0) < 0);
assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_LOW) >= 0);
assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_MEDIUM) >= 0);
assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_HIGH) >= 0);
ASSERT_RETURN_EXPECTED_SE(sd_radv_set_preference(ra, ~0) < 0);
ASSERT_RETURN_EXPECTED_SE(sd_radv_set_managed_information(NULL, true) < 0);
assert_se(sd_radv_set_managed_information(ra, true) >= 0);
assert_se(sd_radv_set_managed_information(ra, false) >= 0);
ASSERT_RETURN_EXPECTED_SE(sd_radv_set_other_information(NULL, true) < 0);
assert_se(sd_radv_set_other_information(ra, true) >= 0);
assert_se(sd_radv_set_other_information(ra, false) >= 0);
ASSERT_RETURN_EXPECTED_SE(sd_radv_set_reachable_time(NULL, 10 * USEC_PER_MSEC) < 0);
assert_se(sd_radv_set_reachable_time(ra, 10 * USEC_PER_MSEC) >= 0);
assert_se(sd_radv_set_reachable_time(ra, 0) >= 0);
assert_se(sd_radv_set_reachable_time(ra, USEC_INFINITY) >= 0);
ASSERT_RETURN_EXPECTED_SE(sd_radv_set_retransmit(NULL, 10 * USEC_PER_MSEC) < 0);
assert_se(sd_radv_set_retransmit(ra, 10 * USEC_PER_MSEC) >= 0);
assert_se(sd_radv_set_retransmit(ra, 0) >= 0);
assert_se(sd_radv_set_retransmit(ra, USEC_INFINITY) >= 0);
/* options */
ASSERT_RETURN_EXPECTED_SE(sd_radv_set_mac(NULL, NULL) < 0);
ASSERT_RETURN_EXPECTED_SE(sd_radv_set_mac(ra, NULL) >= 0);
assert_se(sd_radv_set_mac(ra, &mac_addr) >= 0);
sd_radv_unset_mac(ra);
ASSERT_RETURN_EXPECTED_SE(sd_radv_set_mtu(NULL, 0) < 0);
ASSERT_RETURN_EXPECTED_SE(sd_radv_set_mtu(ra, 0) < 0);
ASSERT_RETURN_EXPECTED_SE(sd_radv_set_mtu(ra, 1279) < 0);
assert_se(sd_radv_set_mtu(ra, 1280) >= 0);
assert_se(sd_radv_set_mtu(ra, 9999) >= 0);
sd_radv_unset_mtu(ra);
ASSERT_RETURN_EXPECTED_SE(sd_radv_add_rdnss(NULL, 0, NULL, 0, 0) < 0);
ASSERT_RETURN_EXPECTED_SE(sd_radv_add_rdnss(ra, 0, NULL, 0, 0) < 0);
assert_se(sd_radv_add_rdnss(ra, 0, &test_rdnss, 600 * USEC_PER_SEC, USEC_INFINITY) < 0);
assert_se(sd_radv_add_rdnss(ra, 1, &test_rdnss, 600 * USEC_PER_SEC, USEC_INFINITY) >= 0);
assert_se(sd_radv_add_rdnss(ra, 1, &test_rdnss, 0, 0) >= 0);
sd_radv_clear_rdnss(ra);
ASSERT_RETURN_EXPECTED_SE(sd_radv_add_dnssl(NULL, NULL, 0, 0) < 0);
assert_se(sd_radv_add_dnssl(ra, NULL, 0, 0) < 0);
assert_se(sd_radv_add_dnssl(ra, NULL, 600 * USEC_PER_SEC, USEC_INFINITY) < 0);
assert_se(sd_radv_add_dnssl(ra, (char**) test_dnssl, 600 * USEC_PER_SEC, USEC_INFINITY) >= 0);
assert_se(sd_radv_add_dnssl(ra, (char**) test_dnssl, 0, 0) >= 0);
sd_radv_clear_dnssl(ra);
ASSERT_RETURN_EXPECTED_SE(sd_radv_set_home_agent(NULL, 0, 0, 0) < 0);
assert_se(sd_radv_set_home_agent(ra, 0, 0, 0) >= 0);
assert_se(sd_radv_set_home_agent(ra, 10, 300 * USEC_PER_SEC, USEC_INFINITY) >= 0);
sd_radv_unset_home_agent(ra);
ra = sd_radv_unref(ra);
assert_se(!ra);
}
static void dump_message(const uint8_t *buf, size_t len) {
assert(len >= sizeof(struct nd_router_advert));
printf("Received Router Advertisement with lifetime %i sec\n",
(buf[6] << 8) + buf[7]);
for (size_t i = 0; i < len; i++) {
if (!(i % 8))
printf("%3zu: ", i);
printf("0x%02x", buf[i]);
if ((i + 1) % 8)
printf(", ");
else
printf("\n");
}
}
static void verify_message(const uint8_t *buf, size_t len) {
static const uint8_t advertisement[] = {
/* ICMPv6 Router Advertisement, no checksum */
0x86, 0x00, 0x00, 0x00, 0x40, 0xc0, 0x00, 0xb4,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* Source Link Layer Address Option */
0x01, 0x01, 0x78, 0x2b, 0xcb, 0xb3, 0x6d, 0x53,
/* Prefix Information Option */
0x03, 0x04, 0x30, 0xc0, 0x00, 0x00, 0x0e, 0x10,
0x00, 0x00, 0x07, 0x08, 0x00, 0x00, 0x00, 0x00,
0x20, 0x01, 0x0d, 0xb8, 0xc0, 0x01, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* Prefix Information Option */
0x03, 0x04, 0x40, 0xc0, 0x00, 0x00, 0x0e, 0x10,
0x00, 0x00, 0x07, 0x08, 0x00, 0x00, 0x00, 0x00,
0x20, 0x01, 0x0d, 0xb8, 0x0b, 0x16, 0xd0, 0x0d,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* Prefix Information Option */
0x03, 0x04, 0x40, 0xc0, 0x00, 0x00, 0x01, 0xf4,
0x00, 0x00, 0x01, 0xb8, 0x00, 0x00, 0x00, 0x00,
0x20, 0x01, 0x0d, 0xb8, 0xde, 0xad, 0xbe, 0xef,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* Recursive DNS Server Option */
0x19, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c,
0x20, 0x01, 0x0d, 0xb8, 0xde, 0xad, 0xbe, 0xef,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
/* DNS Search List Option */
0x1f, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c,
0x03, 0x6c, 0x61, 0x62, 0x05, 0x69, 0x6e, 0x74,
0x72, 0x61, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
/* verify only up to known options, rest is not yet implemented */
for (size_t i = 0, m = MIN(len, sizeof(advertisement)); i < m; i++) {
if (test_stopped)
/* on stop, many header fields are zero */
switch (i) {
case 4: /* hop limit */
case 5: /* flags */
case 6 ... 7: /* router lifetime */
case 8 ... 11: /* reachable time */
case 12 ... 15: /* retrans timer */
assert_se(buf[i] == 0);
continue;
}
assert_se(buf[i] == advertisement[i]);
}
}
static int radv_recv(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
sd_radv *ra = ASSERT_PTR(userdata);
_cleanup_free_ uint8_t *buf = NULL;
ssize_t buflen;
buflen = next_datagram_size_fd(fd);
assert_se(buflen >= 0);
assert_se(buf = new0(uint8_t, buflen));
assert_se(read(fd, buf, buflen) == buflen);
dump_message(buf, buflen);
verify_message(buf, buflen);
if (test_stopped) {
assert_se(sd_event_exit(sd_radv_get_event(ra), 0) >= 0);
return 0;
}
assert_se(sd_radv_stop(ra) >= 0);
test_stopped = true;
return 0;
}
TEST(ra) {
_cleanup_(sd_event_unrefp) sd_event *e = NULL;
_cleanup_(sd_event_source_unrefp) sd_event_source *recv_router_advertisement = NULL;
_cleanup_(sd_radv_unrefp) sd_radv *ra = NULL;
assert_se(socketpair(AF_UNIX, SOCK_SEQPACKET | SOCK_CLOEXEC | SOCK_NONBLOCK, 0, test_fd) >= 0);
assert_se(sd_event_new(&e) >= 0);
assert_se(sd_radv_new(&ra) >= 0);
assert_se(ra);
assert_se(sd_radv_attach_event(ra, e, 0) >= 0);
assert_se(sd_radv_set_ifindex(ra, 42) >= 0);
assert_se(sd_radv_set_router_lifetime(ra, 180 * USEC_PER_SEC) >= 0);
assert_se(sd_radv_set_hop_limit(ra, 64) >= 0);
assert_se(sd_radv_set_managed_information(ra, true) >= 0);
assert_se(sd_radv_set_other_information(ra, true) >= 0);
assert_se(sd_radv_set_mac(ra, &mac_addr) >= 0);
assert_se(sd_radv_add_rdnss(ra, 1, &test_rdnss, 60 * USEC_PER_SEC, USEC_INFINITY) >= 0);
assert_se(sd_radv_add_dnssl(ra, (char**) test_dnssl, 60 * USEC_PER_SEC, USEC_INFINITY) >= 0);
FOREACH_ARRAY(p, prefix, ELEMENTSOF(prefix)) {
printf("Test prefix %s\n", IN6_ADDR_PREFIX_TO_STRING(&p->address, p->prefixlen));
assert_se((sd_radv_add_prefix(
ra,
&p->address,
p->prefixlen,
ND_OPT_PI_FLAG_ONLINK | ND_OPT_PI_FLAG_AUTO,
p->valid > 0 ? p->valid * USEC_PER_SEC : RADV_DEFAULT_VALID_LIFETIME_USEC,
p->preferred > 0 ? p->preferred * USEC_PER_SEC : RADV_DEFAULT_PREFERRED_LIFETIME_USEC,
USEC_INFINITY,
USEC_INFINITY) >= 0) == p->successful);
/* If the previous sd_radv_add_prefix() succeeds, then also the second call should also succeed. */
assert_se((sd_radv_add_prefix(
ra,
&p->address,
p->prefixlen,
ND_OPT_PI_FLAG_ONLINK | ND_OPT_PI_FLAG_AUTO,
p->valid > 0 ? p->valid * USEC_PER_SEC : RADV_DEFAULT_VALID_LIFETIME_USEC,
p->preferred > 0 ? p->preferred * USEC_PER_SEC : RADV_DEFAULT_PREFERRED_LIFETIME_USEC,
USEC_INFINITY,
USEC_INFINITY) >= 0) == p->successful);
}
assert_se(sd_event_add_io(e, &recv_router_advertisement, test_fd[0], EPOLLIN, radv_recv, ra) >= 0);
assert_se(sd_event_source_set_io_fd_own(recv_router_advertisement, true) >= 0);
assert_se(sd_event_add_time_relative(e, NULL, CLOCK_BOOTTIME,
30 * USEC_PER_SEC, 0,
NULL, INT_TO_PTR(-ETIMEDOUT)) >= 0);
assert_se(sd_radv_start(ra) >= 0);
assert_se(sd_event_loop(e) >= 0);
}
DEFINE_TEST_MAIN(LOG_DEBUG);
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