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test: split out {dump,verify}_ra_message()

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Then, let's not modify the global object.
This commit is contained in:
Yu Watanabe 2024-02-19 02:21:31 +09:00
parent 36653443f7
commit a860df82b4
1 changed files with 66 additions and 55 deletions
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121
src/libsystemd-network/test-ndisc-ra.c
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@ -20,37 +20,6 @@ static struct ether_addr mac_addr = {
.ether_addr_octet = { 0x78, 0x2b, 0xcb, 0xb3, 0x6d, 0x53 } .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, 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, 0x30, 0xc0, 0x00, 0x00, 0x0e, 0x10,
0x00, 0x00, 0x07, 0x08, 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 bool test_stopped; static bool test_stopped;
static struct { static struct {
struct in6_addr address; struct in6_addr address;
@ -271,49 +240,91 @@ TEST(radv) {
assert_se(!ra); assert_se(!ra);
} }
static int radv_recv(sd_event_source *s, int fd, uint32_t revents, void *userdata) { static void dump_message(const uint8_t *buf, size_t len) {
sd_radv *ra = userdata; assert(len >= sizeof(struct nd_router_advert));
unsigned char buf[168];
size_t i;
assert_se(read(test_fd[0], &buf, sizeof(buf)) == sizeof(buf)); printf("Received Router Advertisement with lifetime %i sec\n",
(buf[6] << 8) + buf[7]);
/* router lifetime must be zero when test is stopped */ for (size_t i = 0; i < len; i++) {
if (test_stopped) {
advertisement[6] = 0x00;
advertisement[7] = 0x00;
}
printf ("Received Router Advertisement with lifetime %i\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)) if (!(i % 8))
printf("%3zu: ", i); printf("%3zu: ", i);
printf("0x%02x", buf[i]); printf("0x%02x", buf[i]);
assert_se(buf[i] == advertisement[i]);
if ((i + 1) % 8) if ((i + 1) % 8)
printf(", "); printf(", ");
else else
printf("\n"); 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, 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, 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, 0x30, 0xc0, 0x00, 0x00, 0x0e, 0x10,
0x00, 0x00, 0x07, 0x08, 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,
};
/* 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)
switch (i) {
case 6 ... 7: /* router lifetime must be zero on stop. */
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) { if (test_stopped) {
sd_event *e; assert_se(sd_event_exit(sd_radv_get_event(ra), 0) >= 0);
e = sd_radv_get_event(ra);
sd_event_exit(e, 0);
return 0; return 0;
} }
assert_se(sd_radv_stop(ra) >= 0); assert_se(sd_radv_stop(ra) >= 0);
test_stopped = true; test_stopped = true;
return 0; return 0;
} }