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-unix.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 struct {
  56         struct in6_addr address;
  57         unsigned char prefixlen;
  58         uint32_t valid;
  59         uint32_t preferred;
  60         bool successful;
  61 } prefix[] = {
  62         { { { { 0x20, 0x01, 0x0d, 0xb8, 0xde, 0xad, 0xbe, 0xef,
  63                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 64,
  64           500, 440, true },
  65         { { { { 0x20, 0x01, 0x0d, 0xb8, 0x0b, 0x16, 0xd0, 0x0d,
  66                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 64,
  67           /* indicate default valid and preferred lifetimes for the test code */
  68           0, 0, true },
  69         { { { { 0x20, 0x01, 0x0d, 0xb8, 0x0b, 0x16, 0xd0, 0x0d,
  70                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 58,
  71           0, 0,
  72           /* indicate that this prefix already exists */
  73           false },
  74         { { { { 0x20, 0x01, 0x0d, 0xb8, 0x0b, 0x16, 0xd0, 0x0d,
  75                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 120,
  76           0, 0,
  77           /* indicate that this prefix already exists */
  78           false },
  79         { { { { 0x20, 0x01, 0x0d, 0xb8, 0x0b, 0x16, 0xd0, 0x0d,
  80                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 12,
  81           0, 0,
  82           /* indicate that this prefix already exists */
  83           false },
  84         { { { { 0x20, 0x01, 0x0d, 0xb8, 0xc0, 0x01, 0x0d, 0xad,
  85                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 48,
  86           0, 0, true },
  87         { { { { 0x20, 0x01, 0x0d, 0xb8, 0xc0, 0x01, 0x0d, 0xad,
  88                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 60,
  89           0, 0,
  90           /* indicate that this prefix already exists */
  91           false },
  92 };
  93
  94 static const struct in6_addr test_rdnss = { { { 0x20, 0x01, 0x0d, 0xb8,
  95                                                 0xde, 0xad, 0xbe, 0xef,
  96                                                 0x00, 0x00, 0x00, 0x00,
  97                                                 0x00, 0x00, 0x00, 0x01 } } };
  98 static const char *test_dnssl[] = { "lab.intra",
  99                                     NULL };
 100
 101 TEST(radv_prefix) {
 102         sd_radv_prefix *p;
 103
 104         assert_se(sd_radv_prefix_new(&p) >= 0);
 105
 106         assert_se(sd_radv_prefix_set_onlink(NULL, true) < 0);
 107         assert_se(sd_radv_prefix_set_onlink(p, true) >= 0);
 108         assert_se(sd_radv_prefix_set_onlink(p, false) >= 0);
 109
 110         assert_se(sd_radv_prefix_set_address_autoconfiguration(NULL, true) < 0);
 111         assert_se(sd_radv_prefix_set_address_autoconfiguration(p, true) >= 0);
 112         assert_se(sd_radv_prefix_set_address_autoconfiguration(p, false) >= 0);
 113
 114         assert_se(sd_radv_prefix_set_valid_lifetime(NULL, 1, 1) < 0);
 115         assert_se(sd_radv_prefix_set_valid_lifetime(p, 0, 0) >= 0);
 116         assert_se(sd_radv_prefix_set_valid_lifetime(p, 300 * USEC_PER_SEC, USEC_INFINITY) >= 0);
 117         assert_se(sd_radv_prefix_set_valid_lifetime(p, 300 * USEC_PER_SEC, USEC_PER_YEAR) >= 0);
 118
 119         assert_se(sd_radv_prefix_set_preferred_lifetime(NULL, 1, 1) < 0);
 120         assert_se(sd_radv_prefix_set_preferred_lifetime(p, 0, 0) >= 0);
 121         assert_se(sd_radv_prefix_set_preferred_lifetime(p, 300 * USEC_PER_SEC, USEC_INFINITY) >= 0);
 122         assert_se(sd_radv_prefix_set_preferred_lifetime(p, 300 * USEC_PER_SEC, USEC_PER_YEAR) >= 0);
 123
 124         assert_se(sd_radv_prefix_set_prefix(NULL, NULL, 0) < 0);
 125         assert_se(sd_radv_prefix_set_prefix(p, NULL, 0) < 0);
 126
 127         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 64) >= 0);
 128         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 0) < 0);
 129         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 1) < 0);
 130         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 2) < 0);
 131         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 3) >= 0);
 132         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 125) >= 0);
 133         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 128) >= 0);
 134         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 129) < 0);
 135         assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 255) < 0);
 136
 137         p = sd_radv_prefix_unref(p);
 138         assert_se(!p);
 139 }
 140
 141 TEST(radv) {
 142         sd_radv *ra;
 143
 144         assert_se(sd_radv_new(&ra) >= 0);
 145         assert_se(ra);
 146
 147         assert_se(sd_radv_set_ifindex(NULL, 0) < 0);
 148         assert_se(sd_radv_set_ifindex(ra, 0) < 0);
 149         assert_se(sd_radv_set_ifindex(ra, -1) < 0);
 150         assert_se(sd_radv_set_ifindex(ra, -2) < 0);
 151         assert_se(sd_radv_set_ifindex(ra, 42) >= 0);
 152
 153         assert_se(sd_radv_set_mac(NULL, NULL) < 0);
 154         assert_se(sd_radv_set_mac(ra, NULL) >= 0);
 155         assert_se(sd_radv_set_mac(ra, &mac_addr) >= 0);
 156
 157         assert_se(sd_radv_set_mtu(NULL, 0) < 0);
 158         assert_se(sd_radv_set_mtu(ra, 0) < 0);
 159         assert_se(sd_radv_set_mtu(ra, 1279) < 0);
 160         assert_se(sd_radv_set_mtu(ra, 1280) >= 0);
 161         assert_se(sd_radv_set_mtu(ra, ~0) >= 0);
 162
 163         assert_se(sd_radv_set_hop_limit(NULL, 0) < 0);
 164         assert_se(sd_radv_set_hop_limit(ra, 0) >= 0);
 165         assert_se(sd_radv_set_hop_limit(ra, ~0) >= 0);
 166
 167         assert_se(sd_radv_set_router_lifetime(NULL, 0) < 0);
 168         assert_se(sd_radv_set_router_lifetime(ra, 0) >= 0);
 169         assert_se(sd_radv_set_router_lifetime(ra, USEC_INFINITY) < 0);
 170         assert_se(sd_radv_set_router_lifetime(ra, USEC_PER_YEAR) < 0);
 171         assert_se(sd_radv_set_router_lifetime(ra, 300 * USEC_PER_SEC) >= 0);
 172
 173         assert_se(sd_radv_set_preference(NULL, 0) < 0);
 174         assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_LOW) >= 0);
 175         assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_MEDIUM) >= 0);
 176         assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_HIGH) >= 0);
 177         assert_se(sd_radv_set_preference(ra, ~0) < 0);
 178
 179         assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_HIGH) >= 0);
 180         assert_se(sd_radv_set_router_lifetime(ra, 300 * USEC_PER_SEC) >= 0);
 181         assert_se(sd_radv_set_router_lifetime(ra, 0) < 0);
 182         assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_MEDIUM) >= 0);
 183         assert_se(sd_radv_set_router_lifetime(ra, 0) >= 0);
 184
 185         assert_se(sd_radv_set_managed_information(NULL, true) < 0);
 186         assert_se(sd_radv_set_managed_information(ra, true) >= 0);
 187         assert_se(sd_radv_set_managed_information(ra, false) >= 0);
 188
 189         assert_se(sd_radv_set_other_information(NULL, true) < 0);
 190         assert_se(sd_radv_set_other_information(ra, true) >= 0);
 191         assert_se(sd_radv_set_other_information(ra, false) >= 0);
 192
 193         assert_se(sd_radv_set_rdnss(NULL, 0, NULL, 0) < 0);
 194         assert_se(sd_radv_set_rdnss(ra, 0, NULL, 0) >= 0);
 195         assert_se(sd_radv_set_rdnss(ra, 0, NULL, 128) < 0);
 196         assert_se(sd_radv_set_rdnss(ra, 600 * USEC_PER_SEC, &test_rdnss, 0) >= 0);
 197         assert_se(sd_radv_set_rdnss(ra, 600 * USEC_PER_SEC, &test_rdnss, 1) >= 0);
 198         assert_se(sd_radv_set_rdnss(ra, 0, &test_rdnss, 1) >= 0);
 199         assert_se(sd_radv_set_rdnss(ra, 0, NULL, 0) >= 0);
 200
 201         assert_se(sd_radv_set_dnssl(ra, 0, NULL) >= 0);
 202         assert_se(sd_radv_set_dnssl(ra, 600 * USEC_PER_SEC, NULL) >= 0);
 203         assert_se(sd_radv_set_dnssl(ra, 0, (char **)test_dnssl) >= 0);
 204         assert_se(sd_radv_set_dnssl(ra, 600 * USEC_PER_SEC, (char **)test_dnssl) >= 0);
 205
 206         ra = sd_radv_unref(ra);
 207         assert_se(!ra);
 208 }
 209
 210 static int radv_recv(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
 211         sd_radv *ra = userdata;
 212         unsigned char buf[168];
 213         size_t i;
 214
 215         assert_se(read(test_fd[0], &buf, sizeof(buf)) == sizeof(buf));
 216
 217         /* router lifetime must be zero when test is stopped */
 218         if (test_stopped) {
 219                 advertisement[6] = 0x00;
 220                 advertisement[7] = 0x00;
 221         }
 222
 223         printf ("Received Router Advertisement with lifetime %i\n",
 224                 (advertisement[6] << 8) + advertisement[7]);
 225
 226         /* test only up to buf size, rest is not yet implemented */
 227         for (i = 0; i < sizeof(buf); i++) {
 228                 if (!(i % 8))
 229                         printf("%3zu: ", i);
 230
 231                 printf("0x%02x", buf[i]);
 232
 233                 assert_se(buf[i] == advertisement[i]);
 234
 235                 if ((i + 1) % 8)
 236                         printf(", ");
 237                 else
 238                         printf("\n");
 239         }
 240
 241         if (test_stopped) {
 242                 sd_event *e;
 243
 244                 e = sd_radv_get_event(ra);
 245                 sd_event_exit(e, 0);
 246
 247                 return 0;
 248         }
 249
 250         assert_se(sd_radv_stop(ra) >= 0);
 251         test_stopped = true;
 252
 253         return 0;
 254 }
 255
 256 TEST(ra) {
 257         _cleanup_(sd_event_unrefp) sd_event *e = NULL;
 258         _cleanup_(sd_event_source_unrefp) sd_event_source *recv_router_advertisement = NULL;
 259         _cleanup_(sd_radv_unrefp) sd_radv *ra = NULL;
 260
 261         assert_se(socketpair(AF_UNIX, SOCK_SEQPACKET | SOCK_CLOEXEC | SOCK_NONBLOCK, 0, test_fd) >= 0);
 262
 263         assert_se(sd_event_new(&e) >= 0);
 264
 265         assert_se(sd_radv_new(&ra) >= 0);
 266         assert_se(ra);
 267
 268         assert_se(sd_radv_attach_event(ra, e, 0) >= 0);
 269
 270         assert_se(sd_radv_set_ifindex(ra, 42) >= 0);
 271         assert_se(sd_radv_set_mac(ra, &mac_addr) >= 0);
 272         assert_se(sd_radv_set_router_lifetime(ra, 180 * USEC_PER_SEC) >= 0);
 273         assert_se(sd_radv_set_hop_limit(ra, 64) >= 0);
 274         assert_se(sd_radv_set_managed_information(ra, true) >= 0);
 275         assert_se(sd_radv_set_other_information(ra, true) >= 0);
 276         assert_se(sd_radv_set_rdnss(ra, 60 * USEC_PER_SEC, &test_rdnss, 1) >= 0);
 277         assert_se(sd_radv_set_dnssl(ra, 60 * USEC_PER_SEC, (char **)test_dnssl) >= 0);
 278
 279         for (unsigned i = 0; i < ELEMENTSOF(prefix); i++) {
 280                 sd_radv_prefix *p;
 281
 282                 printf("Test prefix %u\n", i);
 283                 assert_se(sd_radv_prefix_new(&p) >= 0);
 284
 285                 assert_se(sd_radv_prefix_set_prefix(p, &prefix[i].address,
 286                                                     prefix[i].prefixlen) >= 0);
 287                 if (prefix[i].valid > 0)
 288                         assert_se(sd_radv_prefix_set_valid_lifetime(p, prefix[i].valid * USEC_PER_SEC, USEC_INFINITY) >= 0);
 289                 if (prefix[i].preferred > 0)
 290                         assert_se(sd_radv_prefix_set_preferred_lifetime(p, prefix[i].preferred * USEC_PER_SEC, USEC_INFINITY) >= 0);
 291
 292                 assert_se((sd_radv_add_prefix(ra, p) >= 0) == prefix[i].successful);
 293                 /* If the previous sd_radv_add_prefix() succeeds, then also the second call should also succeed. */
 294                 assert_se((sd_radv_add_prefix(ra, p) >= 0) == prefix[i].successful);
 295
 296                 p = sd_radv_prefix_unref(p);
 297                 assert_se(!p);
 298         }
 299
 300         assert_se(sd_event_add_io(e, &recv_router_advertisement, test_fd[0], EPOLLIN, radv_recv, ra) >= 0);
 301         assert_se(sd_event_source_set_io_fd_own(recv_router_advertisement, true) >= 0);
 302
 303         assert_se(sd_event_add_time_relative(e, NULL, CLOCK_BOOTTIME,
 304                                              2 * USEC_PER_SEC, 0,
 305                                              NULL, INT_TO_PTR(-ETIMEDOUT)) >= 0);
 306
 307         assert_se(sd_radv_start(ra) >= 0);
 308
 309         assert_se(sd_event_loop(e) >= 0);
 310 }
 311
 312 DEFINE_TEST_MAIN(LOG_DEBUG);