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

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   Copyright © 2017 Intel Corporation. All rights reserved.
   4 ***/
   5
   6 #include <netinet/icmp6.h>
   7 #include <arpa/inet.h>
   8
   9 #include "sd-radv.h"
  10
  11 #include "alloc-util.h"
  12 #include "hexdecoct.h"
  13 #include "icmp6-util.h"
  14 #include "socket-util.h"
  15 #include "strv.h"
  16 #include "tests.h"
  17
  18 static struct ether_addr mac_addr = {
  19         .ether_addr_octet = { 0x78, 0x2b, 0xcb, 0xb3, 0x6d, 0x53 }
  20 };
  21
  22 static uint8_t advertisement[] = {
  23         /* ICMPv6 Router Advertisement, no checksum */
  24         0x86, 0x00, 0x00, 0x00,  0x40, 0xc0, 0x00, 0xb4,
  25         0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00,
  26         /* Source Link Layer Address Option */
  27         0x01, 0x01, 0x78, 0x2b,  0xcb, 0xb3, 0x6d, 0x53,
  28         /* Prefix Information Option */
  29         0x03, 0x04, 0x40, 0xc0,  0x00, 0x00, 0x01, 0xf4,
  30         0x00, 0x00, 0x01, 0xb8,  0x00, 0x00, 0x00, 0x00,
  31         0x20, 0x01, 0x0d, 0xb8,  0xde, 0xad, 0xbe, 0xef,
  32         0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00,
  33         /* Prefix Information Option */
  34         0x03, 0x04, 0x40, 0xc0,  0x00, 0x27, 0x8d, 0x00,
  35         0x00, 0x09, 0x3a, 0x80,  0x00, 0x00, 0x00, 0x00,
  36         0x20, 0x01, 0x0d, 0xb8,  0x0b, 0x16, 0xd0, 0x0d,
  37         0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00,
  38         /* Prefix Information Option */
  39         0x03, 0x04, 0x30, 0xc0,  0x00, 0x27, 0x8d, 0x00,
  40         0x00, 0x09, 0x3a, 0x80,  0x00, 0x00, 0x00, 0x00,
  41         0x20, 0x01, 0x0d, 0xb8,  0xc0, 0x01, 0x0d, 0xad,
  42         0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00,
  43         /* Recursive DNS Server Option */
  44         0x19, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c,
  45         0x20, 0x01, 0x0d, 0xb8, 0xde, 0xad, 0xbe, 0xef,
  46         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
  47         /* DNS Search List Option */
  48         0x1f, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c,
  49         0x03, 0x6c, 0x61, 0x62, 0x05, 0x69, 0x6e, 0x74,
  50         0x72, 0x61, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  51 };
  52
  53 static sd_event_source *test_hangcheck;
  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 succesful;
  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 static int test_rs_hangcheck(sd_event_source *s, uint64_t usec,
 104                              void *userdata) {
 105         assert_se(false);
 106
 107         return 0;
 108 }
 109
 110 static void test_radv_prefix(void) {
 111         sd_radv_prefix *p;
 112
 113         printf("* %s\n", __FUNCTION__);
 114
 115         assert_se(sd_radv_prefix_new(&p) >= 0);
 116
 117         assert_se(sd_radv_prefix_set_onlink(NULL, true) < 0);
 118         assert_se(sd_radv_prefix_set_onlink(p, true) >= 0);
 119         assert_se(sd_radv_prefix_set_onlink(p, false) >= 0);
 120
 121         assert_se(sd_radv_prefix_set_address_autoconfiguration(NULL, true) < 0);
 122         assert_se(sd_radv_prefix_set_address_autoconfiguration(p, true) >= 0);
 123         assert_se(sd_radv_prefix_set_address_autoconfiguration(p, false) >= 0);
 124
 125         assert_se(sd_radv_prefix_set_valid_lifetime(NULL, true) < 0);
 126         assert_se(sd_radv_prefix_set_valid_lifetime(p, ~0) >= 0);
 127         assert_se(sd_radv_prefix_set_valid_lifetime(p, 42) >= 0);
 128         assert_se(sd_radv_prefix_set_valid_lifetime(p, 0) >= 0);
 129
 130         assert_se(sd_radv_prefix_set_preferred_lifetime(NULL, true) < 0);
 131         assert_se(sd_radv_prefix_set_preferred_lifetime(p, ~0) >= 0);
 132         assert_se(sd_radv_prefix_set_preferred_lifetime(p, 42) >= 0);
 133         assert_se(sd_radv_prefix_set_preferred_lifetime(p, 0) >= 0);
 134
 135         assert_se(sd_radv_prefix_set_prefix(NULL, NULL, 0) < 0);
 136         assert_se(sd_radv_prefix_set_prefix(p, NULL, 0) < 0);
 137
 138         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 64) >= 0);
 139         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 0) < 0);
 140         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 1) < 0);
 141         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 2) < 0);
 142         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 3) >= 0);
 143         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 125) >= 0);
 144         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 128) >= 0);
 145         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 129) < 0);
 146         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 255) < 0);
 147
 148         p = sd_radv_prefix_unref(p);
 149         assert_se(!p);
 150 }
 151
 152 static void test_radv(void) {
 153         sd_radv *ra;
 154
 155         printf("* %s\n", __FUNCTION__);
 156
 157         assert_se(sd_radv_new(&ra) >= 0);
 158         assert_se(ra);
 159
 160         assert_se(sd_radv_set_ifindex(NULL, 0) < 0);
 161         assert_se(sd_radv_set_ifindex(ra, 0) >= 0);
 162         assert_se(sd_radv_set_ifindex(ra, -1) >= 0);
 163         assert_se(sd_radv_set_ifindex(ra, -2) < 0);
 164         assert_se(sd_radv_set_ifindex(ra, 42) >= 0);
 165
 166         assert_se(sd_radv_set_mac(NULL, NULL) < 0);
 167         assert_se(sd_radv_set_mac(ra, NULL) >= 0);
 168         assert_se(sd_radv_set_mac(ra, &mac_addr) >= 0);
 169
 170         assert_se(sd_radv_set_mtu(NULL, 0) < 0);
 171         assert_se(sd_radv_set_mtu(ra, 0) < 0);
 172         assert_se(sd_radv_set_mtu(ra, 1279) < 0);
 173         assert_se(sd_radv_set_mtu(ra, 1280) >= 0);
 174         assert_se(sd_radv_set_mtu(ra, ~0) >= 0);
 175
 176         assert_se(sd_radv_set_hop_limit(NULL, 0) < 0);
 177         assert_se(sd_radv_set_hop_limit(ra, 0) >= 0);
 178         assert_se(sd_radv_set_hop_limit(ra, ~0) >= 0);
 179
 180         assert_se(sd_radv_set_router_lifetime(NULL, 0) < 0);
 181         assert_se(sd_radv_set_router_lifetime(ra, 0) >= 0);
 182         assert_se(sd_radv_set_router_lifetime(ra, ~0) >= 0);
 183
 184         assert_se(sd_radv_set_preference(NULL, 0) < 0);
 185         assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_LOW) >= 0);
 186         assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_MEDIUM) >= 0);
 187         assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_HIGH) >= 0);
 188         assert_se(sd_radv_set_preference(ra, ~0) < 0);
 189
 190         assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_HIGH) >= 0);
 191         assert_se(sd_radv_set_router_lifetime(ra, 42000) >= 0);
 192         assert_se(sd_radv_set_router_lifetime(ra, 0) < 0);
 193         assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_MEDIUM) >= 0);
 194         assert_se(sd_radv_set_router_lifetime(ra, 0) >= 0);
 195
 196         assert_se(sd_radv_set_managed_information(NULL, true) < 0);
 197         assert_se(sd_radv_set_managed_information(ra, true) >= 0);
 198         assert_se(sd_radv_set_managed_information(ra, false) >= 0);
 199
 200         assert_se(sd_radv_set_other_information(NULL, true) < 0);
 201         assert_se(sd_radv_set_other_information(ra, true) >= 0);
 202         assert_se(sd_radv_set_other_information(ra, false) >= 0);
 203
 204         assert_se(sd_radv_set_rdnss(NULL, 0, NULL, 0) < 0);
 205         assert_se(sd_radv_set_rdnss(ra, 0, NULL, 0) >= 0);
 206         assert_se(sd_radv_set_rdnss(ra, 0, NULL, 128) < 0);
 207         assert_se(sd_radv_set_rdnss(ra, 600, &test_rdnss, 0) >= 0);
 208         assert_se(sd_radv_set_rdnss(ra, 600, &test_rdnss, 1) >= 0);
 209         assert_se(sd_radv_set_rdnss(ra, 0, &test_rdnss, 1) >= 0);
 210         assert_se(sd_radv_set_rdnss(ra, 0, NULL, 0) >= 0);
 211
 212         assert_se(sd_radv_set_dnssl(ra, 0, NULL) >= 0);
 213         assert_se(sd_radv_set_dnssl(ra, 600, NULL) >= 0);
 214         assert_se(sd_radv_set_dnssl(ra, 0, (char **)test_dnssl) >= 0);
 215         assert_se(sd_radv_set_dnssl(ra, 600, (char **)test_dnssl) >= 0);
 216
 217         ra = sd_radv_unref(ra);
 218         assert_se(!ra);
 219 }
 220
 221 int icmp6_bind_router_solicitation(int index) {
 222         return -ENOSYS;
 223 }
 224
 225 int icmp6_bind_router_advertisement(int index) {
 226         assert_se(index == 42);
 227
 228         return test_fd[1];
 229 }
 230
 231 int icmp6_send_router_solicitation(int s, const struct ether_addr *ether_addr) {
 232
 233         return 0;
 234 }
 235
 236 int icmp6_receive(int fd, void *iov_base, size_t iov_len,
 237                   struct in6_addr *dst, triple_timestamp *timestamp) {
 238         assert_se(read (fd, iov_base, iov_len) == (ssize_t)iov_len);
 239
 240         if (timestamp)
 241                 triple_timestamp_get(timestamp);
 242
 243         return 0;
 244 }
 245
 246 static int radv_recv(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
 247         sd_radv *ra = userdata;
 248         unsigned char buf[168];
 249         size_t i;
 250
 251         assert_se(read(test_fd[0], &buf, sizeof(buf)) == sizeof(buf));
 252
 253         /* router lifetime must be zero when test is stopped */
 254         if (test_stopped) {
 255                 advertisement[6] = 0x00;
 256                 advertisement[7] = 0x00;
 257         }
 258
 259         printf ("Received Router Advertisement with lifetime %u\n",
 260                 (advertisement[6] << 8) + advertisement[7]);
 261
 262         /* test only up to buf size, rest is not yet implemented */
 263         for (i = 0; i < sizeof(buf); i++) {
 264                 if (!(i % 8))
 265                         printf("%3zd: ", i);
 266
 267                 printf("0x%02x", buf[i]);
 268
 269                 assert_se(buf[i] == advertisement[i]);
 270
 271                 if ((i + 1) % 8)
 272                         printf(", ");
 273                 else
 274                         printf("\n");
 275         }
 276
 277         if (test_stopped) {
 278                 sd_event *e;
 279
 280                 e = sd_radv_get_event(ra);
 281                 sd_event_exit(e, 0);
 282
 283                 return 0;
 284         }
 285
 286         assert_se(sd_radv_stop(ra) >= 0);
 287         test_stopped = true;
 288
 289         return 0;
 290 }
 291
 292 static void test_ra(void) {
 293         sd_event *e;
 294         sd_radv *ra;
 295         usec_t time_now = now(clock_boottime_or_monotonic());
 296         unsigned i;
 297
 298         printf("* %s\n", __FUNCTION__);
 299
 300         assert_se(socketpair(AF_UNIX, SOCK_SEQPACKET, 0, test_fd) >= 0);
 301
 302         assert_se(sd_event_new(&e) >= 0);
 303
 304         assert_se(sd_radv_new(&ra) >= 0);
 305         assert_se(ra);
 306
 307         assert_se(sd_radv_attach_event(ra, e, 0) >= 0);
 308
 309         assert_se(sd_radv_set_ifindex(ra, 42) >= 0);
 310         assert_se(sd_radv_set_mac(ra, &mac_addr) >= 0);
 311         assert_se(sd_radv_set_router_lifetime(ra, 180) >= 0);
 312         assert_se(sd_radv_set_hop_limit(ra, 64) >= 0);
 313         assert_se(sd_radv_set_managed_information(ra, true) >= 0);
 314         assert_se(sd_radv_set_other_information(ra, true) >= 0);
 315         assert_se(sd_radv_set_rdnss(ra, 60, &test_rdnss, 1) >= 0);
 316         assert_se(sd_radv_set_dnssl(ra, 60, (char **)test_dnssl) >= 0);
 317
 318         for (i = 0; i < ELEMENTSOF(prefix); i++) {
 319                 sd_radv_prefix *p;
 320
 321                 printf("Test prefix %u\n", i);
 322                 assert_se(sd_radv_prefix_new(&p) >= 0);
 323
 324                 assert_se(sd_radv_prefix_set_prefix(p, &prefix[i].address,
 325                                                     prefix[i].prefixlen) >= 0);
 326                 if (prefix[i].valid)
 327                         assert_se(sd_radv_prefix_set_valid_lifetime(p, prefix[i].valid) >= 0);
 328                 if (prefix[i].preferred)
 329                         assert_se(sd_radv_prefix_set_preferred_lifetime(p, prefix[i].preferred) >= 0);
 330
 331                 assert_se((sd_radv_add_prefix(ra, p, false) >= 0) == prefix[i].succesful);
 332                 assert_se(sd_radv_add_prefix(ra, p, false) < 0);
 333
 334                 p = sd_radv_prefix_unref(p);
 335                 assert_se(!p);
 336         }
 337
 338         assert_se(sd_event_add_io(e, &recv_router_advertisement, test_fd[0],
 339                                   EPOLLIN, radv_recv, ra) >= 0);
 340
 341         assert_se(sd_event_add_time(e, &test_hangcheck, clock_boottime_or_monotonic(),
 342                                  time_now + 2 *USEC_PER_SEC, 0,
 343                                  test_rs_hangcheck, NULL) >= 0);
 344
 345         assert_se(sd_radv_start(ra) >= 0);
 346
 347         sd_event_loop(e);
 348
 349         test_hangcheck = sd_event_source_unref(test_hangcheck);
 350
 351         ra = sd_radv_unref(ra);
 352         assert_se(!ra);
 353
 354         close(test_fd[0]);
 355
 356         sd_event_unref(e);
 357 }
 358
 359 int main(int argc, char *argv[]) {
 360
 361         test_setup_logging(LOG_DEBUG);
 362
 363         test_radv_prefix();
 364         test_radv();
 365         test_ra();
 366
 367         printf("* done\n");
 368         return 0;
 369 }