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mirror of https://github.com/systemd/systemd-stable.git synced 2024-12-22 13:33:56 +03:00
systemd-stable/src/libsystemd-network/test-ndisc-rs.c
Zbigniew Jędrzejewski-Szmek ca78ad1de9 headers: remove unneeded includes from util.h
This means we need to include many more headers in various files that simply
included util.h before, but it seems cleaner to do it this way.
2019-03-27 11:53:12 +01:00

419 lines
13 KiB
C

/* SPDX-License-Identifier: LGPL-2.1+ */
/***
Copyright © 2014 Intel Corporation. All rights reserved.
***/
#include <netinet/icmp6.h>
#include <arpa/inet.h>
#include <unistd.h>
#include "sd-ndisc.h"
#include "alloc-util.h"
#include "hexdecoct.h"
#include "icmp6-util.h"
#include "socket-util.h"
#include "strv.h"
#include "ndisc-internal.h"
#include "tests.h"
static struct ether_addr mac_addr = {
.ether_addr_octet = {'A', 'B', 'C', '1', '2', '3'}
};
static bool verbose = false;
static sd_event_source *test_hangcheck;
static int test_fd[2];
static sd_ndisc *test_timeout_nd;
typedef int (*send_ra_t)(uint8_t flags);
static send_ra_t send_ra_function;
static void router_dump(sd_ndisc_router *rt) {
struct in6_addr addr;
char buf[FORMAT_TIMESTAMP_MAX];
uint8_t hop_limit;
uint64_t t, flags;
uint32_t mtu;
uint16_t lifetime;
unsigned preference;
int r;
assert_se(rt);
log_info("--");
assert_se(sd_ndisc_router_get_address(rt, &addr) == -ENODATA);
assert_se(sd_ndisc_router_get_timestamp(rt, CLOCK_REALTIME, &t) >= 0);
log_info("Timestamp: %s", format_timestamp(buf, sizeof(buf), t));
assert_se(sd_ndisc_router_get_timestamp(rt, CLOCK_MONOTONIC, &t) >= 0);
log_info("Monotonic: %" PRIu64, t);
if (sd_ndisc_router_get_hop_limit(rt, &hop_limit) < 0)
log_info("No hop limit set");
else
log_info("Hop limit: %u", hop_limit);
assert_se(sd_ndisc_router_get_flags(rt, &flags) >= 0);
log_info("Flags: <%s|%s>",
flags & ND_RA_FLAG_OTHER ? "OTHER" : "",
flags & ND_RA_FLAG_MANAGED ? "MANAGED" : "");
assert_se(sd_ndisc_router_get_preference(rt, &preference) >= 0);
log_info("Preference: %s",
preference == SD_NDISC_PREFERENCE_LOW ? "low" :
preference == SD_NDISC_PREFERENCE_HIGH ? "high" : "medium");
assert_se(sd_ndisc_router_get_lifetime(rt, &lifetime) >= 0);
log_info("Lifetime: %" PRIu16, lifetime);
if (sd_ndisc_router_get_mtu(rt, &mtu) < 0)
log_info("No MTU set");
else
log_info("MTU: %" PRIu32, mtu);
r = sd_ndisc_router_option_rewind(rt);
for (;;) {
uint8_t type;
assert_se(r >= 0);
if (r == 0)
break;
assert_se(sd_ndisc_router_option_get_type(rt, &type) >= 0);
log_info(">> Option %u", type);
switch (type) {
case SD_NDISC_OPTION_SOURCE_LL_ADDRESS:
case SD_NDISC_OPTION_TARGET_LL_ADDRESS: {
_cleanup_free_ char *c = NULL;
const void *p;
size_t n;
assert_se(sd_ndisc_router_option_get_raw(rt, &p, &n) >= 0);
assert_se(n > 2);
assert_se(c = hexmem((uint8_t*) p + 2, n - 2));
log_info("Address: %s", c);
break;
}
case SD_NDISC_OPTION_PREFIX_INFORMATION: {
uint32_t lifetime_valid, lifetime_preferred;
unsigned prefix_len;
uint8_t pfl;
struct in6_addr a;
char buff[INET6_ADDRSTRLEN];
assert_se(sd_ndisc_router_prefix_get_valid_lifetime(rt, &lifetime_valid) >= 0);
log_info("Valid Lifetime: %" PRIu32, lifetime_valid);
assert_se(sd_ndisc_router_prefix_get_preferred_lifetime(rt, &lifetime_preferred) >= 0);
log_info("Preferred Lifetime: %" PRIu32, lifetime_preferred);
assert_se(sd_ndisc_router_prefix_get_flags(rt, &pfl) >= 0);
log_info("Flags: <%s|%s>",
pfl & ND_OPT_PI_FLAG_ONLINK ? "ONLINK" : "",
pfl & ND_OPT_PI_FLAG_AUTO ? "AUTO" : "");
assert_se(sd_ndisc_router_prefix_get_prefixlen(rt, &prefix_len) >= 0);
log_info("Prefix Length: %u", prefix_len);
assert_se(sd_ndisc_router_prefix_get_address(rt, &a) >= 0);
log_info("Prefix: %s", inet_ntop(AF_INET6, &a, buff, sizeof(buff)));
break;
}
case SD_NDISC_OPTION_RDNSS: {
const struct in6_addr *a;
uint32_t lt;
int n, i;
n = sd_ndisc_router_rdnss_get_addresses(rt, &a);
assert_se(n > 0);
for (i = 0; i < n; i++) {
char buff[INET6_ADDRSTRLEN];
log_info("DNS: %s", inet_ntop(AF_INET6, a + i, buff, sizeof(buff)));
}
assert_se(sd_ndisc_router_rdnss_get_lifetime(rt, &lt) >= 0);
log_info("Lifetime: %" PRIu32, lt);
break;
}
case SD_NDISC_OPTION_DNSSL: {
_cleanup_strv_free_ char **l = NULL;
uint32_t lt;
int n, i;
n = sd_ndisc_router_dnssl_get_domains(rt, &l);
assert_se(n > 0);
for (i = 0; i < n; i++)
log_info("Domain: %s", l[i]);
assert_se(sd_ndisc_router_dnssl_get_lifetime(rt, &lt) >= 0);
log_info("Lifetime: %" PRIu32, lt);
break;
}}
r = sd_ndisc_router_option_next(rt);
}
}
static int test_rs_hangcheck(sd_event_source *s, uint64_t usec,
void *userdata) {
assert_se(false);
return 0;
}
int icmp6_bind_router_solicitation(int index) {
assert_se(index == 42);
if (socketpair(AF_UNIX, SOCK_DGRAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0, test_fd) < 0)
return -errno;
return test_fd[0];
}
int icmp6_bind_router_advertisement(int index) {
return -ENOSYS;
}
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 send_ra(uint8_t flags) {
uint8_t advertisement[] = {
0x86, 0x00, 0xde, 0x83, 0x40, 0xc0, 0x00, 0xb4,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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,
0x19, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c,
0x20, 0x01, 0x0d, 0xb8, 0xde, 0xad, 0xbe, 0xef,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
0x1f, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c,
0x03, 0x6c, 0x61, 0x62, 0x05, 0x69, 0x6e, 0x74,
0x72, 0x61, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 0x01, 0x78, 0x2b, 0xcb, 0xb3, 0x6d, 0x53,
};
advertisement[5] = flags;
assert_se(write(test_fd[1], advertisement, sizeof(advertisement)) ==
sizeof(advertisement));
if (verbose)
printf(" sent RA with flag 0x%02x\n", flags);
return 0;
}
int icmp6_send_router_solicitation(int s, const struct ether_addr *ether_addr) {
if (!send_ra_function)
return 0;
return send_ra_function(0);
}
static void test_callback(sd_ndisc *nd, sd_ndisc_event event, sd_ndisc_router *rt, void *userdata) {
sd_event *e = userdata;
static unsigned idx = 0;
uint64_t flags_array[] = {
0,
0,
0,
ND_RA_FLAG_OTHER,
ND_RA_FLAG_MANAGED
};
uint64_t flags;
uint32_t mtu;
assert_se(nd);
if (event != SD_NDISC_EVENT_ROUTER)
return;
router_dump(rt);
assert_se(sd_ndisc_router_get_flags(rt, &flags) >= 0);
assert_se(flags == flags_array[idx]);
idx++;
if (verbose)
printf(" got event 0x%02" PRIx64 "\n", flags);
if (idx < ELEMENTSOF(flags_array)) {
send_ra(flags_array[idx]);
return;
}
assert_se(sd_ndisc_get_mtu(nd, &mtu) == -ENODATA);
sd_event_exit(e, 0);
}
static void test_rs(void) {
sd_event *e;
sd_ndisc *nd;
usec_t time_now = now(clock_boottime_or_monotonic());
if (verbose)
printf("* %s\n", __FUNCTION__);
send_ra_function = send_ra;
assert_se(sd_event_new(&e) >= 0);
assert_se(sd_ndisc_new(&nd) >= 0);
assert_se(nd);
assert_se(sd_ndisc_attach_event(nd, e, 0) >= 0);
assert_se(sd_ndisc_set_ifindex(nd, 42) >= 0);
assert_se(sd_ndisc_set_mac(nd, &mac_addr) >= 0);
assert_se(sd_ndisc_set_callback(nd, test_callback, e) >= 0);
assert_se(sd_event_add_time(e, &test_hangcheck, clock_boottime_or_monotonic(),
time_now + 2 *USEC_PER_SEC, 0,
test_rs_hangcheck, NULL) >= 0);
assert_se(sd_ndisc_stop(nd) >= 0);
assert_se(sd_ndisc_start(nd) >= 0);
assert_se(sd_ndisc_stop(nd) >= 0);
assert_se(sd_ndisc_start(nd) >= 0);
sd_event_loop(e);
test_hangcheck = sd_event_source_unref(test_hangcheck);
nd = sd_ndisc_unref(nd);
assert_se(!nd);
close(test_fd[1]);
sd_event_unref(e);
}
static int test_timeout_value(uint8_t flags) {
static int count = 0;
static usec_t last = 0;
sd_ndisc *nd = test_timeout_nd;
usec_t min, max;
char time_string_min[FORMAT_TIMESPAN_MAX];
char time_string_nd[FORMAT_TIMESPAN_MAX];
char time_string_max[FORMAT_TIMESPAN_MAX];
assert_se(nd);
assert_se(nd->event);
if (++count >= 20)
sd_event_exit(nd->event, 0);
if (last == 0) {
/* initial RT = IRT + RAND*IRT */
min = NDISC_ROUTER_SOLICITATION_INTERVAL -
NDISC_ROUTER_SOLICITATION_INTERVAL / 10;
max = NDISC_ROUTER_SOLICITATION_INTERVAL +
NDISC_ROUTER_SOLICITATION_INTERVAL / 10;
} else {
/* next RT = 2*RTprev + RAND*RTprev */
min = 2 * last - last / 10;
max = 2 * last + last / 10;
}
/* final RT > MRT */
if (last * 2 > NDISC_MAX_ROUTER_SOLICITATION_INTERVAL) {
min = NDISC_MAX_ROUTER_SOLICITATION_INTERVAL -
NDISC_MAX_ROUTER_SOLICITATION_INTERVAL / 10;
max = NDISC_MAX_ROUTER_SOLICITATION_INTERVAL +
NDISC_MAX_ROUTER_SOLICITATION_INTERVAL / 10;
}
format_timespan(time_string_min, FORMAT_TIMESPAN_MAX,
min, USEC_PER_MSEC);
format_timespan(time_string_nd, FORMAT_TIMESPAN_MAX,
nd->retransmit_time, USEC_PER_MSEC);
format_timespan(time_string_max, FORMAT_TIMESPAN_MAX,
max, USEC_PER_MSEC);
log_info("backoff timeout interval %2d %s%s <= %s <= %s",
count,
(last * 2 > NDISC_MAX_ROUTER_SOLICITATION_INTERVAL)? "(max) ": "",
time_string_min, time_string_nd, time_string_max);
assert_se(min <= nd->retransmit_time);
assert_se(max >= nd->retransmit_time);
last = nd->retransmit_time;
assert_se(sd_event_source_set_time(nd->timeout_event_source, 0) >= 0);
return 0;
}
static void test_timeout(void) {
sd_event *e;
sd_ndisc *nd;
usec_t time_now = now(clock_boottime_or_monotonic());
if (verbose)
printf("* %s\n", __FUNCTION__);
send_ra_function = test_timeout_value;
assert_se(sd_event_new(&e) >= 0);
assert_se(sd_ndisc_new(&nd) >= 0);
assert_se(nd);
test_timeout_nd = nd;
assert_se(sd_ndisc_attach_event(nd, e, 0) >= 0);
assert_se(sd_ndisc_set_ifindex(nd, 42) >= 0);
assert_se(sd_ndisc_set_mac(nd, &mac_addr) >= 0);
assert_se(sd_event_add_time(e, &test_hangcheck, clock_boottime_or_monotonic(),
time_now + 2U * USEC_PER_SEC, 0,
test_rs_hangcheck, NULL) >= 0);
assert_se(sd_ndisc_start(nd) >= 0);
sd_event_loop(e);
test_hangcheck = sd_event_source_unref(test_hangcheck);
nd = sd_ndisc_unref(nd);
sd_event_unref(e);
}
int main(int argc, char *argv[]) {
test_setup_logging(LOG_DEBUG);
test_rs();
test_timeout();
return 0;
}