src/libsystemd-network/test-ndisc-ra.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2 /***
   3   Copyright © 2017 Intel Corporation. All rights reserved.
   4 ***/
   5
   6 #include <netinet/icmp6.h>
   7 #include <arpa/inet.h>
   8 #include <unistd.h>
   9
  10 #include "sd-radv.h"
  11
  12 #include "alloc-util.h"
  13 #include "hexdecoct.h"
  14 #include "icmp6-util.h"
  15 #include "socket-util.h"
  16 #include "strv.h"
  17 #include "tests.h"
  18
  19 static struct ether_addr mac_addr = {
  20         .ether_addr_octet = { 0x78, 0x2b, 0xcb, 0xb3, 0x6d, 0x53 }
  21 };
  22
  23 static uint8_t advertisement[] = {
  24         /* ICMPv6 Router Advertisement, no checksum */
  25         0x86, 0x00, 0x00, 0x00,  0x40, 0xc0, 0x00, 0xb4,
  26         0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00,
  27         /* Source Link Layer Address Option */
  28         0x01, 0x01, 0x78, 0x2b,  0xcb, 0xb3, 0x6d, 0x53,
  29         /* Prefix Information Option */
  30         0x03, 0x04, 0x40, 0xc0,  0x00, 0x00, 0x01, 0xf4,
  31         0x00, 0x00, 0x01, 0xb8,  0x00, 0x00, 0x00, 0x00,
  32         0x20, 0x01, 0x0d, 0xb8,  0xde, 0xad, 0xbe, 0xef,
  33         0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00,
  34         /* Prefix Information Option */
  35         0x03, 0x04, 0x40, 0xc0,  0x00, 0x00, 0x0e, 0x10,
  36         0x00, 0x00, 0x07, 0x08,  0x00, 0x00, 0x00, 0x00,
  37         0x20, 0x01, 0x0d, 0xb8,  0x0b, 0x16, 0xd0, 0x0d,
  38         0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00,
  39         /* Prefix Information Option */
  40         0x03, 0x04, 0x30, 0xc0,  0x00, 0x00, 0x0e, 0x10,
  41         0x00, 0x00, 0x07, 0x08,  0x00, 0x00, 0x00, 0x00,
  42         0x20, 0x01, 0x0d, 0xb8,  0xc0, 0x01, 0x0d, 0xad,
  43         0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00,
  44         /* Recursive DNS Server Option */
  45         0x19, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c,
  46         0x20, 0x01, 0x0d, 0xb8, 0xde, 0xad, 0xbe, 0xef,
  47         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
  48         /* DNS Search List Option */
  49         0x1f, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c,
  50         0x03, 0x6c, 0x61, 0x62, 0x05, 0x69, 0x6e, 0x74,
  51         0x72, 0x61, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  52 };
  53
  54 static bool test_stopped;
  55 static int test_fd[2];
  56 static sd_event_source *recv_router_advertisement;
  57 static struct {
  58         struct in6_addr address;
  59         unsigned char prefixlen;
  60         uint32_t valid;
  61         uint32_t preferred;
  62         bool successful;
  63 } prefix[] = {
  64         { { { { 0x20, 0x01, 0x0d, 0xb8, 0xde, 0xad, 0xbe, 0xef,
  65                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 64,
  66           500, 440, true },
  67         { { { { 0x20, 0x01, 0x0d, 0xb8, 0x0b, 0x16, 0xd0, 0x0d,
  68                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 64,
  69           /* indicate default valid and preferred lifetimes for the test code */
  70           0, 0, true },
  71         { { { { 0x20, 0x01, 0x0d, 0xb8, 0x0b, 0x16, 0xd0, 0x0d,
  72                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 58,
  73           0, 0,
  74           /* indicate that this prefix already exists */
  75           false },
  76         { { { { 0x20, 0x01, 0x0d, 0xb8, 0x0b, 0x16, 0xd0, 0x0d,
  77                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 120,
  78           0, 0,
  79           /* indicate that this prefix already exists */
  80           false },
  81         { { { { 0x20, 0x01, 0x0d, 0xb8, 0x0b, 0x16, 0xd0, 0x0d,
  82                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 12,
  83           0, 0,
  84           /* indicate that this prefix already exists */
  85           false },
  86         { { { { 0x20, 0x01, 0x0d, 0xb8, 0xc0, 0x01, 0x0d, 0xad,
  87                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 48,
  88           0, 0, true },
  89         { { { { 0x20, 0x01, 0x0d, 0xb8, 0xc0, 0x01, 0x0d, 0xad,
  90                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 60,
  91           0, 0,
  92           /* indicate that this prefix already exists */
  93           false },
  94 };
  95
  96 static const struct in6_addr test_rdnss = { { { 0x20, 0x01, 0x0d, 0xb8,
  97                                                 0xde, 0xad, 0xbe, 0xef,
  98                                                 0x00, 0x00, 0x00, 0x00,
  99                                                 0x00, 0x00, 0x00, 0x01 } } };
 100 static const char *test_dnssl[] = { "lab.intra",
 101                                     NULL };
 102
 103 TEST(radv_prefix) {
 104         sd_radv_prefix *p;
 105
 106         assert_se(sd_radv_prefix_new(&p) >= 0);
 107
 108         assert_se(sd_radv_prefix_set_onlink(NULL, true) < 0);
 109         assert_se(sd_radv_prefix_set_onlink(p, true) >= 0);
 110         assert_se(sd_radv_prefix_set_onlink(p, false) >= 0);
 111
 112         assert_se(sd_radv_prefix_set_address_autoconfiguration(NULL, true) < 0);
 113         assert_se(sd_radv_prefix_set_address_autoconfiguration(p, true) >= 0);
 114         assert_se(sd_radv_prefix_set_address_autoconfiguration(p, false) >= 0);
 115
 116         assert_se(sd_radv_prefix_set_valid_lifetime(NULL, 1, 1) < 0);
 117         assert_se(sd_radv_prefix_set_valid_lifetime(p, 0, 0) >= 0);
 118         assert_se(sd_radv_prefix_set_valid_lifetime(p, 300 * USEC_PER_SEC, USEC_INFINITY) >= 0);
 119         assert_se(sd_radv_prefix_set_valid_lifetime(p, 300 * USEC_PER_SEC, USEC_PER_YEAR) >= 0);
 120
 121         assert_se(sd_radv_prefix_set_preferred_lifetime(NULL, 1, 1) < 0);
 122         assert_se(sd_radv_prefix_set_preferred_lifetime(p, 0, 0) >= 0);
 123         assert_se(sd_radv_prefix_set_preferred_lifetime(p, 300 * USEC_PER_SEC, USEC_INFINITY) >= 0);
 124         assert_se(sd_radv_prefix_set_preferred_lifetime(p, 300 * USEC_PER_SEC, USEC_PER_YEAR) >= 0);
 125
 126         assert_se(sd_radv_prefix_set_prefix(NULL, NULL, 0) < 0);
 127         assert_se(sd_radv_prefix_set_prefix(p, NULL, 0) < 0);
 128
 129         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 64) >= 0);
 130         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 0) < 0);
 131         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 1) < 0);
 132         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 2) < 0);
 133         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 3) >= 0);
 134         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 125) >= 0);
 135         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 128) >= 0);
 136         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 129) < 0);
 137         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 255) < 0);
 138
 139         p = sd_radv_prefix_unref(p);
 140         assert_se(!p);
 141 }
 142
 143 TEST(radv) {
 144         sd_radv *ra;
 145
 146         assert_se(sd_radv_new(&ra) >= 0);
 147         assert_se(ra);
 148
 149         assert_se(sd_radv_set_ifindex(NULL, 0) < 0);
 150         assert_se(sd_radv_set_ifindex(ra, 0) < 0);
 151         assert_se(sd_radv_set_ifindex(ra, -1) < 0);
 152         assert_se(sd_radv_set_ifindex(ra, -2) < 0);
 153         assert_se(sd_radv_set_ifindex(ra, 42) >= 0);
 154
 155         assert_se(sd_radv_set_mac(NULL, NULL) < 0);
 156         assert_se(sd_radv_set_mac(ra, NULL) >= 0);
 157         assert_se(sd_radv_set_mac(ra, &mac_addr) >= 0);
 158
 159         assert_se(sd_radv_set_mtu(NULL, 0) < 0);
 160         assert_se(sd_radv_set_mtu(ra, 0) < 0);
 161         assert_se(sd_radv_set_mtu(ra, 1279) < 0);
 162         assert_se(sd_radv_set_mtu(ra, 1280) >= 0);
 163         assert_se(sd_radv_set_mtu(ra, ~0) >= 0);
 164
 165         assert_se(sd_radv_set_hop_limit(NULL, 0) < 0);
 166         assert_se(sd_radv_set_hop_limit(ra, 0) >= 0);
 167         assert_se(sd_radv_set_hop_limit(ra, ~0) >= 0);
 168
 169         assert_se(sd_radv_set_router_lifetime(NULL, 0) < 0);
 170         assert_se(sd_radv_set_router_lifetime(ra, 0) >= 0);
 171         assert_se(sd_radv_set_router_lifetime(ra, USEC_INFINITY) < 0);
 172         assert_se(sd_radv_set_router_lifetime(ra, USEC_PER_YEAR) < 0);
 173         assert_se(sd_radv_set_router_lifetime(ra, 300 * USEC_PER_SEC) >= 0);
 174
 175         assert_se(sd_radv_set_preference(NULL, 0) < 0);
 176         assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_LOW) >= 0);
 177         assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_MEDIUM) >= 0);
 178         assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_HIGH) >= 0);
 179         assert_se(sd_radv_set_preference(ra, ~0) < 0);
 180
 181         assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_HIGH) >= 0);
 182         assert_se(sd_radv_set_router_lifetime(ra, 300 * USEC_PER_SEC) >= 0);
 183         assert_se(sd_radv_set_router_lifetime(ra, 0) < 0);
 184         assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_MEDIUM) >= 0);
 185         assert_se(sd_radv_set_router_lifetime(ra, 0) >= 0);
 186
 187         assert_se(sd_radv_set_managed_information(NULL, true) < 0);
 188         assert_se(sd_radv_set_managed_information(ra, true) >= 0);
 189         assert_se(sd_radv_set_managed_information(ra, false) >= 0);
 190
 191         assert_se(sd_radv_set_other_information(NULL, true) < 0);
 192         assert_se(sd_radv_set_other_information(ra, true) >= 0);
 193         assert_se(sd_radv_set_other_information(ra, false) >= 0);
 194
 195         assert_se(sd_radv_set_rdnss(NULL, 0, NULL, 0) < 0);
 196         assert_se(sd_radv_set_rdnss(ra, 0, NULL, 0) >= 0);
 197         assert_se(sd_radv_set_rdnss(ra, 0, NULL, 128) < 0);
 198         assert_se(sd_radv_set_rdnss(ra, 600, &test_rdnss, 0) >= 0);
 199         assert_se(sd_radv_set_rdnss(ra, 600, &test_rdnss, 1) >= 0);
 200         assert_se(sd_radv_set_rdnss(ra, 0, &test_rdnss, 1) >= 0);
 201         assert_se(sd_radv_set_rdnss(ra, 0, NULL, 0) >= 0);
 202
 203         assert_se(sd_radv_set_dnssl(ra, 0, NULL) >= 0);
 204         assert_se(sd_radv_set_dnssl(ra, 600, NULL) >= 0);
 205         assert_se(sd_radv_set_dnssl(ra, 0, (char **)test_dnssl) >= 0);
 206         assert_se(sd_radv_set_dnssl(ra, 600, (char **)test_dnssl) >= 0);
 207
 208         ra = sd_radv_unref(ra);
 209         assert_se(!ra);
 210 }
 211
 212 int icmp6_bind_router_solicitation(int ifindex) {
 213         return -ENOSYS;
 214 }
 215
 216 int icmp6_bind_router_advertisement(int ifindex) {
 217         assert_se(ifindex == 42);
 218
 219         return test_fd[1];
 220 }
 221
 222 int icmp6_send_router_solicitation(int s, const struct ether_addr *ether_addr) {
 223
 224         return 0;
 225 }
 226
 227 int icmp6_receive(int fd, void *iov_base, size_t iov_len,
 228                   struct in6_addr *dst, triple_timestamp *timestamp) {
 229         assert_se(read (fd, iov_base, iov_len) == (ssize_t)iov_len);
 230
 231         if (timestamp)
 232                 triple_timestamp_get(timestamp);
 233
 234         return 0;
 235 }
 236
 237 static int radv_recv(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
 238         sd_radv *ra = userdata;
 239         unsigned char buf[168];
 240         size_t i;
 241
 242         assert_se(read(test_fd[0], &buf, sizeof(buf)) == sizeof(buf));
 243
 244         /* router lifetime must be zero when test is stopped */
 245         if (test_stopped) {
 246                 advertisement[6] = 0x00;
 247                 advertisement[7] = 0x00;
 248         }
 249
 250         printf ("Received Router Advertisement with lifetime %u\n",
 251                 (advertisement[6] << 8) + advertisement[7]);
 252
 253         /* test only up to buf size, rest is not yet implemented */
 254         for (i = 0; i < sizeof(buf); i++) {
 255                 if (!(i % 8))
 256                         printf("%3zd: ", i);
 257
 258                 printf("0x%02x", buf[i]);
 259
 260                 assert_se(buf[i] == advertisement[i]);
 261
 262                 if ((i + 1) % 8)
 263                         printf(", ");
 264                 else
 265                         printf("\n");
 266         }
 267
 268         if (test_stopped) {
 269                 sd_event *e;
 270
 271                 e = sd_radv_get_event(ra);
 272                 sd_event_exit(e, 0);
 273
 274                 return 0;
 275         }
 276
 277         assert_se(sd_radv_stop(ra) >= 0);
 278         test_stopped = true;
 279
 280         return 0;
 281 }
 282
 283 TEST(ra) {
 284         sd_event *e;
 285         sd_radv *ra;
 286         unsigned i;
 287
 288         assert_se(socketpair(AF_UNIX, SOCK_SEQPACKET | SOCK_CLOEXEC | SOCK_NONBLOCK, 0, test_fd) >= 0);
 289
 290         assert_se(sd_event_new(&e) >= 0);
 291
 292         assert_se(sd_radv_new(&ra) >= 0);
 293         assert_se(ra);
 294
 295         assert_se(sd_radv_attach_event(ra, e, 0) >= 0);
 296
 297         assert_se(sd_radv_set_ifindex(ra, 42) >= 0);
 298         assert_se(sd_radv_set_mac(ra, &mac_addr) >= 0);
 299         assert_se(sd_radv_set_router_lifetime(ra, 180 * USEC_PER_SEC) >= 0);
 300         assert_se(sd_radv_set_hop_limit(ra, 64) >= 0);
 301         assert_se(sd_radv_set_managed_information(ra, true) >= 0);
 302         assert_se(sd_radv_set_other_information(ra, true) >= 0);
 303         assert_se(sd_radv_set_rdnss(ra, 60, &test_rdnss, 1) >= 0);
 304         assert_se(sd_radv_set_dnssl(ra, 60, (char **)test_dnssl) >= 0);
 305
 306         for (i = 0; i < ELEMENTSOF(prefix); i++) {
 307                 sd_radv_prefix *p;
 308
 309                 printf("Test prefix %u\n", i);
 310                 assert_se(sd_radv_prefix_new(&p) >= 0);
 311
 312                 assert_se(sd_radv_prefix_set_prefix(p, &prefix[i].address,
 313                                                     prefix[i].prefixlen) >= 0);
 314                 if (prefix[i].valid > 0)
 315                         assert_se(sd_radv_prefix_set_valid_lifetime(p, prefix[i].valid * USEC_PER_SEC, USEC_INFINITY) >= 0);
 316                 if (prefix[i].preferred > 0)
 317                         assert_se(sd_radv_prefix_set_preferred_lifetime(p, prefix[i].preferred * USEC_PER_SEC, USEC_INFINITY) >= 0);
 318
 319                 assert_se((sd_radv_add_prefix(ra, p) >= 0) == prefix[i].successful);
 320                 /* If the previous sd_radv_add_prefix() succeeds, then also the second call should also succeed. */
 321                 assert_se((sd_radv_add_prefix(ra, p) >= 0) == prefix[i].successful);
 322
 323                 p = sd_radv_prefix_unref(p);
 324                 assert_se(!p);
 325         }
 326
 327         assert_se(sd_event_add_io(e, &recv_router_advertisement, test_fd[0],
 328                                   EPOLLIN, radv_recv, ra) >= 0);
 329
 330         assert_se(sd_event_add_time_relative(e, NULL, clock_boottime_or_monotonic(),
 331                                              2 * USEC_PER_SEC, 0,
 332                                              NULL, INT_TO_PTR(-ETIMEDOUT)) >= 0);
 333
 334         assert_se(sd_radv_start(ra) >= 0);
 335
 336         assert_se(sd_event_loop(e) >= 0);
 337
 338         ra = sd_radv_unref(ra);
 339         assert_se(!ra);
 340
 341         close(test_fd[0]);
 342
 343         sd_event_unref(e);
 344 }
 345
 346 DEFINE_TEST_MAIN(LOG_DEBUG);