/* SPDX-License-Identifier: LGPL-2.1-or-later */ /*** Copyright © 2017 Intel Corporation. All rights reserved. ***/ #include #include #include #include "sd-radv.h" #include "alloc-util.h" #include "hexdecoct.h" #include "icmp6-test-util.h" #include "radv-internal.h" #include "socket-util.h" #include "strv.h" #include "tests.h" static struct ether_addr mac_addr = { .ether_addr_octet = { 0x78, 0x2b, 0xcb, 0xb3, 0x6d, 0x53 } }; static bool test_stopped; static struct { struct in6_addr address; unsigned char prefixlen; uint32_t valid; uint32_t preferred; bool successful; } prefix[] = { { { { { 0x20, 0x01, 0x0d, 0xb8, 0xde, 0xad, 0xbe, 0xef, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 64, 500, 440, true }, { { { { 0x20, 0x01, 0x0d, 0xb8, 0x0b, 0x16, 0xd0, 0x0d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 64, /* indicate default valid and preferred lifetimes for the test code */ 0, 0, true }, { { { { 0x20, 0x01, 0x0d, 0xb8, 0x0b, 0x16, 0xd0, 0x0d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 58, 0, 0, /* indicate that this prefix already exists */ false }, { { { { 0x20, 0x01, 0x0d, 0xb8, 0x0b, 0x16, 0xd0, 0x0d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 120, 0, 0, /* indicate that this prefix already exists */ false }, { { { { 0x20, 0x01, 0x0d, 0xb8, 0x0b, 0x16, 0xd0, 0x0d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 12, 0, 0, /* indicate that this prefix already exists */ false }, { { { { 0x20, 0x01, 0x0d, 0xb8, 0xc0, 0x01, 0x0d, 0xad, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 48, 0, 0, true }, { { { { 0x20, 0x01, 0x0d, 0xb8, 0xc0, 0x01, 0x0d, 0xad, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 60, 0, 0, /* indicate that this prefix already exists */ false }, }; static const struct in6_addr test_rdnss = { { { 0x20, 0x01, 0x0d, 0xb8, 0xde, 0xad, 0xbe, 0xef, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 } } }; static const char *test_dnssl[] = { "lab.intra", NULL }; TEST(radv) { sd_radv *ra; assert_se(sd_radv_new(&ra) >= 0); assert_se(ra); ASSERT_RETURN_EXPECTED_SE(sd_radv_set_ifindex(NULL, 0) < 0); ASSERT_RETURN_EXPECTED_SE(sd_radv_set_ifindex(ra, 0) < 0); ASSERT_RETURN_EXPECTED_SE(sd_radv_set_ifindex(ra, -1) < 0); ASSERT_RETURN_EXPECTED_SE(sd_radv_set_ifindex(ra, -2) < 0); assert_se(sd_radv_set_ifindex(ra, 42) >= 0); /* header */ ASSERT_RETURN_EXPECTED_SE(sd_radv_set_hop_limit(NULL, 0) < 0); assert_se(sd_radv_set_hop_limit(ra, 0) >= 0); assert_se(sd_radv_set_hop_limit(ra, ~0) >= 0); ASSERT_RETURN_EXPECTED_SE(sd_radv_set_router_lifetime(NULL, 0) < 0); assert_se(sd_radv_set_router_lifetime(ra, 0) >= 0); assert_se(sd_radv_set_router_lifetime(ra, USEC_INFINITY) < 0); assert_se(sd_radv_set_router_lifetime(ra, USEC_PER_YEAR) < 0); assert_se(sd_radv_set_router_lifetime(ra, 300 * USEC_PER_SEC) >= 0); ASSERT_RETURN_EXPECTED_SE(sd_radv_set_preference(NULL, 0) < 0); assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_LOW) >= 0); assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_MEDIUM) >= 0); assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_HIGH) >= 0); ASSERT_RETURN_EXPECTED_SE(sd_radv_set_preference(ra, ~0) < 0); ASSERT_RETURN_EXPECTED_SE(sd_radv_set_managed_information(NULL, true) < 0); assert_se(sd_radv_set_managed_information(ra, true) >= 0); assert_se(sd_radv_set_managed_information(ra, false) >= 0); ASSERT_RETURN_EXPECTED_SE(sd_radv_set_other_information(NULL, true) < 0); assert_se(sd_radv_set_other_information(ra, true) >= 0); assert_se(sd_radv_set_other_information(ra, false) >= 0); ASSERT_RETURN_EXPECTED_SE(sd_radv_set_reachable_time(NULL, 10 * USEC_PER_MSEC) < 0); assert_se(sd_radv_set_reachable_time(ra, 10 * USEC_PER_MSEC) >= 0); assert_se(sd_radv_set_reachable_time(ra, 0) >= 0); assert_se(sd_radv_set_reachable_time(ra, USEC_INFINITY) >= 0); ASSERT_RETURN_EXPECTED_SE(sd_radv_set_retransmit(NULL, 10 * USEC_PER_MSEC) < 0); assert_se(sd_radv_set_retransmit(ra, 10 * USEC_PER_MSEC) >= 0); assert_se(sd_radv_set_retransmit(ra, 0) >= 0); assert_se(sd_radv_set_retransmit(ra, USEC_INFINITY) >= 0); /* options */ ASSERT_RETURN_EXPECTED_SE(sd_radv_set_mac(NULL, NULL) < 0); ASSERT_RETURN_EXPECTED_SE(sd_radv_set_mac(ra, NULL) >= 0); assert_se(sd_radv_set_mac(ra, &mac_addr) >= 0); sd_radv_unset_mac(ra); ASSERT_RETURN_EXPECTED_SE(sd_radv_set_mtu(NULL, 0) < 0); ASSERT_RETURN_EXPECTED_SE(sd_radv_set_mtu(ra, 0) < 0); ASSERT_RETURN_EXPECTED_SE(sd_radv_set_mtu(ra, 1279) < 0); assert_se(sd_radv_set_mtu(ra, 1280) >= 0); assert_se(sd_radv_set_mtu(ra, 9999) >= 0); sd_radv_unset_mtu(ra); ASSERT_RETURN_EXPECTED_SE(sd_radv_add_rdnss(NULL, 0, NULL, 0, 0) < 0); ASSERT_RETURN_EXPECTED_SE(sd_radv_add_rdnss(ra, 0, NULL, 0, 0) < 0); assert_se(sd_radv_add_rdnss(ra, 0, &test_rdnss, 600 * USEC_PER_SEC, USEC_INFINITY) < 0); assert_se(sd_radv_add_rdnss(ra, 1, &test_rdnss, 600 * USEC_PER_SEC, USEC_INFINITY) >= 0); assert_se(sd_radv_add_rdnss(ra, 1, &test_rdnss, 0, 0) >= 0); sd_radv_clear_rdnss(ra); ASSERT_RETURN_EXPECTED_SE(sd_radv_add_dnssl(NULL, NULL, 0, 0) < 0); assert_se(sd_radv_add_dnssl(ra, NULL, 0, 0) < 0); assert_se(sd_radv_add_dnssl(ra, NULL, 600 * USEC_PER_SEC, USEC_INFINITY) < 0); assert_se(sd_radv_add_dnssl(ra, (char**) test_dnssl, 600 * USEC_PER_SEC, USEC_INFINITY) >= 0); assert_se(sd_radv_add_dnssl(ra, (char**) test_dnssl, 0, 0) >= 0); sd_radv_clear_dnssl(ra); ASSERT_RETURN_EXPECTED_SE(sd_radv_set_home_agent(NULL, 0, 0, 0) < 0); assert_se(sd_radv_set_home_agent(ra, 0, 0, 0) >= 0); assert_se(sd_radv_set_home_agent(ra, 10, 300 * USEC_PER_SEC, USEC_INFINITY) >= 0); sd_radv_unset_home_agent(ra); ra = sd_radv_unref(ra); assert_se(!ra); } static void dump_message(const uint8_t *buf, size_t len) { assert(len >= sizeof(struct nd_router_advert)); printf("Received Router Advertisement with lifetime %i sec\n", (buf[6] << 8) + buf[7]); for (size_t i = 0; i < len; i++) { if (!(i % 8)) printf("%3zu: ", i); printf("0x%02x", buf[i]); if ((i + 1) % 8) printf(", "); else 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, 0x30, 0xc0, 0x00, 0x00, 0x0e, 0x10, 0x00, 0x00, 0x07, 0x08, 0x00, 0x00, 0x00, 0x00, 0x20, 0x01, 0x0d, 0xb8, 0xc0, 0x01, 0x00, 0x00, 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, 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, /* 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) /* on stop, many header fields are zero */ switch (i) { case 4: /* hop limit */ case 5: /* flags */ case 6 ... 7: /* router lifetime */ case 8 ... 11: /* reachable time */ case 12 ... 15: /* retrans timer */ 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) { assert_se(sd_event_exit(sd_radv_get_event(ra), 0) >= 0); return 0; } assert_se(sd_radv_stop(ra) >= 0); test_stopped = true; return 0; } TEST(ra) { _cleanup_(sd_event_unrefp) sd_event *e = NULL; _cleanup_(sd_event_source_unrefp) sd_event_source *recv_router_advertisement = NULL; _cleanup_(sd_radv_unrefp) sd_radv *ra = NULL; assert_se(socketpair(AF_UNIX, SOCK_SEQPACKET | SOCK_CLOEXEC | SOCK_NONBLOCK, 0, test_fd) >= 0); assert_se(sd_event_new(&e) >= 0); assert_se(sd_radv_new(&ra) >= 0); assert_se(ra); assert_se(sd_radv_attach_event(ra, e, 0) >= 0); assert_se(sd_radv_set_ifindex(ra, 42) >= 0); assert_se(sd_radv_set_router_lifetime(ra, 180 * USEC_PER_SEC) >= 0); assert_se(sd_radv_set_hop_limit(ra, 64) >= 0); assert_se(sd_radv_set_managed_information(ra, true) >= 0); assert_se(sd_radv_set_other_information(ra, true) >= 0); assert_se(sd_radv_set_mac(ra, &mac_addr) >= 0); assert_se(sd_radv_add_rdnss(ra, 1, &test_rdnss, 60 * USEC_PER_SEC, USEC_INFINITY) >= 0); assert_se(sd_radv_add_dnssl(ra, (char**) test_dnssl, 60 * USEC_PER_SEC, USEC_INFINITY) >= 0); FOREACH_ARRAY(p, prefix, ELEMENTSOF(prefix)) { printf("Test prefix %s\n", IN6_ADDR_PREFIX_TO_STRING(&p->address, p->prefixlen)); assert_se((sd_radv_add_prefix( ra, &p->address, p->prefixlen, ND_OPT_PI_FLAG_ONLINK | ND_OPT_PI_FLAG_AUTO, p->valid > 0 ? p->valid * USEC_PER_SEC : RADV_DEFAULT_VALID_LIFETIME_USEC, p->preferred > 0 ? p->preferred * USEC_PER_SEC : RADV_DEFAULT_PREFERRED_LIFETIME_USEC, USEC_INFINITY, USEC_INFINITY) >= 0) == p->successful); /* If the previous sd_radv_add_prefix() succeeds, then also the second call should also succeed. */ assert_se((sd_radv_add_prefix( ra, &p->address, p->prefixlen, ND_OPT_PI_FLAG_ONLINK | ND_OPT_PI_FLAG_AUTO, p->valid > 0 ? p->valid * USEC_PER_SEC : RADV_DEFAULT_VALID_LIFETIME_USEC, p->preferred > 0 ? p->preferred * USEC_PER_SEC : RADV_DEFAULT_PREFERRED_LIFETIME_USEC, USEC_INFINITY, USEC_INFINITY) >= 0) == p->successful); } assert_se(sd_event_add_io(e, &recv_router_advertisement, test_fd[0], EPOLLIN, radv_recv, ra) >= 0); assert_se(sd_event_source_set_io_fd_own(recv_router_advertisement, true) >= 0); assert_se(sd_event_add_time_relative(e, NULL, CLOCK_BOOTTIME, 30 * USEC_PER_SEC, 0, NULL, INT_TO_PTR(-ETIMEDOUT)) >= 0); assert_se(sd_radv_start(ra) >= 0); assert_se(sd_event_loop(e) >= 0); } DEFINE_TEST_MAIN(LOG_DEBUG);