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systemd-stable/src/libsystemd-network/test-ndisc-ra.c
Yu Watanabe 0945767012 sd-radv: router lifetime must be 0 or between 4 seconds and 9000 seconds 
See RFC 4861 section 6.2.1.
2021-10-27 19:27:07 +09:00

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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-util.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 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, 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,
/* Prefix Information Option */
0x03, 0x04, 0x40, 0xc0, 0x00, 0x27, 0x8d, 0x00,
0x00, 0x09, 0x3a, 0x80, 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, 0x30, 0xc0, 0x00, 0x27, 0x8d, 0x00,
0x00, 0x09, 0x3a, 0x80, 0x00, 0x00, 0x00, 0x00,
0x20, 0x01, 0x0d, 0xb8, 0xc0, 0x01, 0x0d, 0xad,
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,
};
static sd_event_source *test_hangcheck;
static bool test_stopped;
static int test_fd[2];
static sd_event_source *recv_router_advertisement;
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 };
static int test_rs_hangcheck(sd_event_source *s, uint64_t usec,
void *userdata) {
assert_se(false);
return 0;
}
static void test_radv_prefix(void) {
sd_radv_prefix *p;
printf("* %s\n", __func__);
assert_se(sd_radv_prefix_new(&p) >= 0);
assert_se(sd_radv_prefix_set_onlink(NULL, true) < 0);
assert_se(sd_radv_prefix_set_onlink(p, true) >= 0);
assert_se(sd_radv_prefix_set_onlink(p, false) >= 0);
assert_se(sd_radv_prefix_set_address_autoconfiguration(NULL, true) < 0);
assert_se(sd_radv_prefix_set_address_autoconfiguration(p, true) >= 0);
assert_se(sd_radv_prefix_set_address_autoconfiguration(p, false) >= 0);
assert_se(sd_radv_prefix_set_valid_lifetime(NULL, true) < 0);
assert_se(sd_radv_prefix_set_valid_lifetime(p, ~0) >= 0);
assert_se(sd_radv_prefix_set_valid_lifetime(p, 42) >= 0);
assert_se(sd_radv_prefix_set_valid_lifetime(p, 0) >= 0);
assert_se(sd_radv_prefix_set_preferred_lifetime(NULL, true) < 0);
assert_se(sd_radv_prefix_set_preferred_lifetime(p, ~0) >= 0);
assert_se(sd_radv_prefix_set_preferred_lifetime(p, 42) >= 0);
assert_se(sd_radv_prefix_set_preferred_lifetime(p, 0) >= 0);
assert_se(sd_radv_prefix_set_prefix(NULL, NULL, 0) < 0);
assert_se(sd_radv_prefix_set_prefix(p, NULL, 0) < 0);
assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 64) >= 0);
assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 0) < 0);
assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 1) < 0);
assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 2) < 0);
assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 3) >= 0);
assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 125) >= 0);
assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 128) >= 0);
assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 129) < 0);
assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 255) < 0);
p = sd_radv_prefix_unref(p);
assert_se(!p);
}
static void test_radv(void) {
sd_radv *ra;
printf("* %s\n", __func__);
assert_se(sd_radv_new(&ra) >= 0);
assert_se(ra);
assert_se(sd_radv_set_ifindex(NULL, 0) < 0);
assert_se(sd_radv_set_ifindex(ra, 0) < 0);
assert_se(sd_radv_set_ifindex(ra, -1) < 0);
assert_se(sd_radv_set_ifindex(ra, -2) < 0);
assert_se(sd_radv_set_ifindex(ra, 42) >= 0);
assert_se(sd_radv_set_mac(NULL, NULL) < 0);
assert_se(sd_radv_set_mac(ra, NULL) >= 0);
assert_se(sd_radv_set_mac(ra, &mac_addr) >= 0);
assert_se(sd_radv_set_mtu(NULL, 0) < 0);
assert_se(sd_radv_set_mtu(ra, 0) < 0);
assert_se(sd_radv_set_mtu(ra, 1279) < 0);
assert_se(sd_radv_set_mtu(ra, 1280) >= 0);
assert_se(sd_radv_set_mtu(ra, ~0) >= 0);
assert_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_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_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_se(sd_radv_set_preference(ra, ~0) < 0);
assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_HIGH) >= 0);
assert_se(sd_radv_set_router_lifetime(ra, 300 * USEC_PER_SEC) >= 0);
assert_se(sd_radv_set_router_lifetime(ra, 0) < 0);
assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_MEDIUM) >= 0);
assert_se(sd_radv_set_router_lifetime(ra, 0) >= 0);
assert_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_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_se(sd_radv_set_rdnss(NULL, 0, NULL, 0) < 0);
assert_se(sd_radv_set_rdnss(ra, 0, NULL, 0) >= 0);
assert_se(sd_radv_set_rdnss(ra, 0, NULL, 128) < 0);
assert_se(sd_radv_set_rdnss(ra, 600, &test_rdnss, 0) >= 0);
assert_se(sd_radv_set_rdnss(ra, 600, &test_rdnss, 1) >= 0);
assert_se(sd_radv_set_rdnss(ra, 0, &test_rdnss, 1) >= 0);
assert_se(sd_radv_set_rdnss(ra, 0, NULL, 0) >= 0);
assert_se(sd_radv_set_dnssl(ra, 0, NULL) >= 0);
assert_se(sd_radv_set_dnssl(ra, 600, NULL) >= 0);
assert_se(sd_radv_set_dnssl(ra, 0, (char **)test_dnssl) >= 0);
assert_se(sd_radv_set_dnssl(ra, 600, (char **)test_dnssl) >= 0);
ra = sd_radv_unref(ra);
assert_se(!ra);
}
int icmp6_bind_router_solicitation(int ifindex) {
return -ENOSYS;
}
int icmp6_bind_router_advertisement(int ifindex) {
assert_se(ifindex == 42);
return test_fd[1];
}
int icmp6_send_router_solicitation(int s, const struct ether_addr *ether_addr) {
return 0;
}
int icmp6_receive(int fd, void *iov_base, size_t iov_len,
struct in6_addr *dst, triple_timestamp *timestamp) {
assert_se(read (fd, iov_base, iov_len) == (ssize_t)iov_len);
if (timestamp)
triple_timestamp_get(timestamp);
return 0;
}
static int radv_recv(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
sd_radv *ra = userdata;
unsigned char buf[168];
size_t i;
assert_se(read(test_fd[0], &buf, sizeof(buf)) == sizeof(buf));
/* router lifetime must be zero when test is stopped */
if (test_stopped) {
advertisement[6] = 0x00;
advertisement[7] = 0x00;
}
printf ("Received Router Advertisement with lifetime %u\n",
(advertisement[6] << 8) + advertisement[7]);
/* test only up to buf size, rest is not yet implemented */
for (i = 0; i < sizeof(buf); i++) {
if (!(i % 8))
printf("%3zd: ", i);
printf("0x%02x", buf[i]);
assert_se(buf[i] == advertisement[i]);
if ((i + 1) % 8)
printf(", ");
else
printf("\n");
}
if (test_stopped) {
sd_event *e;
e = sd_radv_get_event(ra);
sd_event_exit(e, 0);
return 0;
}
assert_se(sd_radv_stop(ra) >= 0);
test_stopped = true;
return 0;
}
static void test_ra(void) {
sd_event *e;
sd_radv *ra;
unsigned i;
printf("* %s\n", __func__);
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_mac(ra, &mac_addr) >= 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_rdnss(ra, 60, &test_rdnss, 1) >= 0);
assert_se(sd_radv_set_dnssl(ra, 60, (char **)test_dnssl) >= 0);
for (i = 0; i < ELEMENTSOF(prefix); i++) {
sd_radv_prefix *p;
printf("Test prefix %u\n", i);
assert_se(sd_radv_prefix_new(&p) >= 0);
assert_se(sd_radv_prefix_set_prefix(p, &prefix[i].address,
prefix[i].prefixlen) >= 0);
if (prefix[i].valid)
assert_se(sd_radv_prefix_set_valid_lifetime(p, prefix[i].valid) >= 0);
if (prefix[i].preferred)
assert_se(sd_radv_prefix_set_preferred_lifetime(p, prefix[i].preferred) >= 0);
assert_se((sd_radv_add_prefix(ra, p, false) >= 0) == prefix[i].successful);
assert_se(sd_radv_add_prefix(ra, p, false) < 0);
p = sd_radv_prefix_unref(p);
assert_se(!p);
}
assert_se(sd_event_add_io(e, &recv_router_advertisement, test_fd[0],
EPOLLIN, radv_recv, ra) >= 0);
assert_se(sd_event_add_time_relative(
e, &test_hangcheck, clock_boottime_or_monotonic(),
2 *USEC_PER_SEC, 0,
test_rs_hangcheck, NULL) >= 0);
assert_se(sd_radv_start(ra) >= 0);
sd_event_loop(e);
test_hangcheck = sd_event_source_unref(test_hangcheck);
ra = sd_radv_unref(ra);
assert_se(!ra);
close(test_fd[0]);
sd_event_unref(e);
}
int main(int argc, char *argv[]) {
test_setup_logging(LOG_DEBUG);
test_radv_prefix();
test_radv();
test_ra();
printf("* done\n");
return 0;
}
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