src/libsystemd-network/test-dhcp-client.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright (C) 2013 Intel Corporation. All rights reserved.
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU Lesser General Public License as published by
  10   the Free Software Foundation; either version 2.1 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   Lesser General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include <stdlib.h>
  23 #include <assert.h>
  24 #include <errno.h>
  25 #include <stdio.h>
  26 #include <sys/types.h>
  27 #include <sys/socket.h>
  28 #include <unistd.h>
  29
  30 #include "util.h"
  31 #include "socket-util.h"
  32
  33 #include "dhcp-protocol.h"
  34 #include "dhcp-internal.h"
  35 #include "sd-dhcp-client.h"
  36
  37 static struct ether_addr mac_addr = {
  38         .ether_addr_octet = {'A', 'B', 'C', '1', '2', '3'}
  39 };
  40
  41 typedef int (*test_callback_recv_t)(size_t size, DHCPMessage *dhcp);
  42
  43 static bool verbose = false;
  44 static int test_fd[2];
  45 static test_callback_recv_t callback_recv;
  46 static be32_t xid;
  47 static sd_event_source *test_hangcheck;
  48
  49 static int test_dhcp_hangcheck(sd_event_source *s, uint64_t usec,
  50                                void *userdata)
  51 {
  52         assert_not_reached("Test case should have completed in 2 seconds");
  53
  54         return 0;
  55 }
  56
  57 static void test_request_basic(sd_event *e)
  58 {
  59         int r;
  60
  61         sd_dhcp_client *client;
  62
  63         if (verbose)
  64                 printf("* %s\n", __FUNCTION__);
  65
  66         r = sd_dhcp_client_new(&client);
  67
  68         assert_se(r >= 0);
  69         assert_se(client);
  70
  71         r = sd_dhcp_client_attach_event(client, e, 0);
  72         assert_se(r >= 0);
  73
  74         assert_se(sd_dhcp_client_set_request_option(NULL, 0) == -EINVAL);
  75         assert_se(sd_dhcp_client_set_request_address(NULL, NULL) == -EINVAL);
  76         assert_se(sd_dhcp_client_set_index(NULL, 0) == -EINVAL);
  77
  78         assert_se(sd_dhcp_client_set_index(client, 15) == 0);
  79         assert_se(sd_dhcp_client_set_index(client, -42) == -EINVAL);
  80         assert_se(sd_dhcp_client_set_index(client, -1) == 0);
  81
  82         assert_se(sd_dhcp_client_set_request_option(client,
  83                                         DHCP_OPTION_SUBNET_MASK) == -EEXIST);
  84         assert_se(sd_dhcp_client_set_request_option(client,
  85                                         DHCP_OPTION_ROUTER) == -EEXIST);
  86         assert_se(sd_dhcp_client_set_request_option(client,
  87                                         DHCP_OPTION_HOST_NAME) == -EEXIST);
  88         assert_se(sd_dhcp_client_set_request_option(client,
  89                                         DHCP_OPTION_DOMAIN_NAME) == -EEXIST);
  90         assert_se(sd_dhcp_client_set_request_option(client,
  91                                         DHCP_OPTION_DOMAIN_NAME_SERVER)
  92                         == -EEXIST);
  93         assert_se(sd_dhcp_client_set_request_option(client,
  94                                         DHCP_OPTION_NTP_SERVER) == -EEXIST);
  95
  96         assert_se(sd_dhcp_client_set_request_option(client,
  97                                         DHCP_OPTION_PAD) == -EINVAL);
  98         assert_se(sd_dhcp_client_set_request_option(client,
  99                                         DHCP_OPTION_END) == -EINVAL);
 100         assert_se(sd_dhcp_client_set_request_option(client,
 101                                         DHCP_OPTION_MESSAGE_TYPE) == -EINVAL);
 102         assert_se(sd_dhcp_client_set_request_option(client,
 103                                         DHCP_OPTION_OVERLOAD) == -EINVAL);
 104         assert_se(sd_dhcp_client_set_request_option(client,
 105                                         DHCP_OPTION_PARAMETER_REQUEST_LIST)
 106                         == -EINVAL);
 107
 108         assert_se(sd_dhcp_client_set_request_option(client, 33) == 0);
 109         assert_se(sd_dhcp_client_set_request_option(client, 33) == -EEXIST);
 110         assert_se(sd_dhcp_client_set_request_option(client, 44) == 0);
 111         assert_se(sd_dhcp_client_set_request_option(client, 33) == -EEXIST);
 112 }
 113
 114 static void test_checksum(void)
 115 {
 116         uint8_t buf[20] = {
 117                 0x45, 0x00, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00,
 118                 0x40, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 119                 0xff, 0xff, 0xff, 0xff
 120         };
 121
 122         if (verbose)
 123                 printf("* %s\n", __FUNCTION__);
 124
 125         assert_se(dhcp_packet_checksum(&buf, 20) == be16toh(0x78ae));
 126 }
 127
 128 static int check_options(uint8_t code, uint8_t len, const uint8_t *option,
 129                 void *user_data)
 130 {
 131         switch(code) {
 132         case DHCP_OPTION_CLIENT_IDENTIFIER:
 133                 assert_se(len == 7);
 134                 assert_se(option[0] == 0x01);
 135                 assert_se(memcmp(&option[1], &mac_addr, ETH_ALEN) == 0);
 136                 break;
 137
 138         default:
 139                 break;
 140         }
 141
 142         return 0;
 143 }
 144
 145 int dhcp_network_send_raw_socket(int s, const union sockaddr_union *link,
 146                                  const void *packet, size_t len)
 147 {
 148         size_t size;
 149         _cleanup_free_ DHCPPacket *discover;
 150         uint16_t ip_check, udp_check;
 151
 152         assert_se(s >= 0);
 153         assert_se(packet);
 154
 155         size = sizeof(DHCPPacket);
 156         assert_se(len > size);
 157
 158         discover = memdup(packet, len);
 159
 160         assert_se(discover->ip.ttl == IPDEFTTL);
 161         assert_se(discover->ip.protocol == IPPROTO_UDP);
 162         assert_se(discover->ip.saddr == INADDR_ANY);
 163         assert_se(discover->ip.daddr == INADDR_BROADCAST);
 164         assert_se(discover->udp.source == be16toh(DHCP_PORT_CLIENT));
 165         assert_se(discover->udp.dest == be16toh(DHCP_PORT_SERVER));
 166
 167         ip_check = discover->ip.check;
 168
 169         discover->ip.ttl = 0;
 170         discover->ip.check = discover->udp.len;
 171
 172         udp_check = ~dhcp_packet_checksum(&discover->ip.ttl, len - 8);
 173         assert_se(udp_check == 0xffff);
 174
 175         discover->ip.ttl = IPDEFTTL;
 176         discover->ip.check = ip_check;
 177
 178         ip_check = ~dhcp_packet_checksum(&discover->ip, sizeof(discover->ip));
 179         assert_se(ip_check == 0xffff);
 180
 181         assert_se(discover->dhcp.xid);
 182         assert_se(memcmp(discover->dhcp.chaddr,
 183                       &mac_addr.ether_addr_octet, 6) == 0);
 184
 185         size = len - sizeof(struct iphdr) - sizeof(struct udphdr);
 186
 187         assert_se(callback_recv);
 188         callback_recv(size, &discover->dhcp);
 189
 190         return 575;
 191 }
 192
 193 int dhcp_network_bind_raw_socket(int index, union sockaddr_union *link, uint32_t id)
 194 {
 195         if (socketpair(AF_UNIX, SOCK_STREAM, 0, test_fd) < 0)
 196                 return -errno;
 197
 198         return test_fd[0];
 199 }
 200
 201 int dhcp_network_bind_udp_socket(int index, be32_t address, uint16_t port)
 202 {
 203         return 0;
 204 }
 205
 206 int dhcp_network_send_udp_socket(int s, be32_t address, uint16_t port,
 207                                  const void *packet, size_t len)
 208 {
 209         return 0;
 210 }
 211
 212 static int test_discover_message_verify(size_t size, struct DHCPMessage *dhcp)
 213 {
 214         int res;
 215
 216         res = dhcp_option_parse(dhcp, size, check_options, NULL);
 217         assert_se(res == DHCP_DISCOVER);
 218
 219         if (verbose)
 220                 printf("  recv DHCP Discover 0x%08x\n", be32toh(dhcp->xid));
 221
 222         return 0;
 223 }
 224
 225 static void test_discover_message(sd_event *e)
 226 {
 227         sd_dhcp_client *client;
 228         int res, r;
 229
 230         if (verbose)
 231                 printf("* %s\n", __FUNCTION__);
 232
 233         r = sd_dhcp_client_new(&client);
 234         assert_se(r >= 0);
 235         assert_se(client);
 236
 237         r = sd_dhcp_client_attach_event(client, e, 0);
 238         assert_se(r >= 0);
 239
 240         assert_se(sd_dhcp_client_set_index(client, 42) >= 0);
 241         assert_se(sd_dhcp_client_set_mac(client, &mac_addr) >= 0);
 242
 243         assert_se(sd_dhcp_client_set_request_option(client, 248) >= 0);
 244
 245         callback_recv = test_discover_message_verify;
 246
 247         res = sd_dhcp_client_start(client);
 248
 249         assert_se(res == 0 || res == -EINPROGRESS);
 250
 251         sd_event_run(e, (uint64_t) -1);
 252
 253         sd_dhcp_client_stop(client);
 254         sd_dhcp_client_unref(client);
 255
 256         test_fd[1] = safe_close(test_fd[1]);
 257
 258         callback_recv = NULL;
 259 }
 260
 261 static uint8_t test_addr_acq_offer[] = {
 262         0x45, 0x10, 0x01, 0x48, 0x00, 0x00, 0x00, 0x00,
 263         0x80, 0x11, 0xb3, 0x84, 0xc0, 0xa8, 0x02, 0x01,
 264         0xc0, 0xa8, 0x02, 0xbf, 0x00, 0x43, 0x00, 0x44,
 265         0x01, 0x34, 0x00, 0x00, 0x02, 0x01, 0x06, 0x00,
 266         0x6f, 0x95, 0x2f, 0x30, 0x00, 0x00, 0x00, 0x00,
 267         0x00, 0x00, 0x00, 0x00, 0xc0, 0xa8, 0x02, 0xbf,
 268         0xc0, 0xa8, 0x02, 0x01, 0x00, 0x00, 0x00, 0x00,
 269         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 270         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 271         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 272         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 273         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 274         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 275         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 276         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 277         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 278         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 279         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 280         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 281         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 282         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 283         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 284         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 285         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 286         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 287         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 288         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 289         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 290         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 291         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 292         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 293         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 294         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 295         0x63, 0x82, 0x53, 0x63, 0x35, 0x01, 0x02, 0x36,
 296         0x04, 0xc0, 0xa8, 0x02, 0x01, 0x33, 0x04, 0x00,
 297         0x00, 0x02, 0x58, 0x01, 0x04, 0xff, 0xff, 0xff,
 298         0x00, 0x2a, 0x04, 0xc0, 0xa8, 0x02, 0x01, 0x0f,
 299         0x09, 0x6c, 0x61, 0x62, 0x2e, 0x69, 0x6e, 0x74,
 300         0x72, 0x61, 0x03, 0x04, 0xc0, 0xa8, 0x02, 0x01,
 301         0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 302         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 303 };
 304
 305 static uint8_t test_addr_acq_ack[] = {
 306         0x45, 0x10, 0x01, 0x48, 0x00, 0x00, 0x00, 0x00,
 307         0x80, 0x11, 0xb3, 0x84, 0xc0, 0xa8, 0x02, 0x01,
 308         0xc0, 0xa8, 0x02, 0xbf, 0x00, 0x43, 0x00, 0x44,
 309         0x01, 0x34, 0x00, 0x00, 0x02, 0x01, 0x06, 0x00,
 310         0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00,
 311         0x00, 0x00, 0x00, 0x00, 0xc0, 0xa8, 0x02, 0xbf,
 312         0xc0, 0xa8, 0x02, 0x01, 0x00, 0x00, 0x00, 0x00,
 313         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 314         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 315         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 316         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 317         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 318         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 319         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 320         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 321         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 322         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 323         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 324         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 325         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 326         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 327         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 328         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 329         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 330         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 331         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 332         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 333         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 334         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 335         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 336         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 337         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 338         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 339         0x63, 0x82, 0x53, 0x63, 0x35, 0x01, 0x05, 0x36,
 340         0x04, 0xc0, 0xa8, 0x02, 0x01, 0x33, 0x04, 0x00,
 341         0x00, 0x02, 0x58, 0x01, 0x04, 0xff, 0xff, 0xff,
 342         0x00, 0x2a, 0x04, 0xc0, 0xa8, 0x02, 0x01, 0x0f,
 343         0x09, 0x6c, 0x61, 0x62, 0x2e, 0x69, 0x6e, 0x74,
 344         0x72, 0x61, 0x03, 0x04, 0xc0, 0xa8, 0x02, 0x01,
 345         0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 346         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 347 };
 348
 349 static void test_addr_acq_acquired(sd_dhcp_client *client, int event,
 350                                    void *userdata) {
 351         sd_event *e = userdata;
 352         sd_dhcp_lease *lease;
 353         struct in_addr addr;
 354
 355         assert_se(client);
 356         assert_se(event == DHCP_EVENT_IP_ACQUIRE);
 357
 358         assert_se(sd_dhcp_client_get_lease(client, &lease) >= 0);
 359         assert_se(lease);
 360
 361         assert_se(sd_dhcp_lease_get_address(lease, &addr) >= 0);
 362         assert_se(memcmp(&addr.s_addr, &test_addr_acq_ack[44],
 363                       sizeof(addr.s_addr)) == 0);
 364
 365         assert_se(sd_dhcp_lease_get_netmask(lease, &addr) >= 0);
 366         assert_se(memcmp(&addr.s_addr, &test_addr_acq_ack[285],
 367                       sizeof(addr.s_addr)) == 0);
 368
 369         assert_se(sd_dhcp_lease_get_router(lease, &addr) >= 0);
 370         assert_se(memcmp(&addr.s_addr, &test_addr_acq_ack[308],
 371                       sizeof(addr.s_addr)) == 0);
 372
 373         if (verbose)
 374                 printf("  DHCP address acquired\n");
 375
 376         sd_event_exit(e, 0);
 377 }
 378
 379 static int test_addr_acq_recv_request(size_t size, DHCPMessage *request) {
 380         uint16_t udp_check = 0;
 381         uint8_t *msg_bytes = (uint8_t *)request;
 382         int res;
 383
 384         res = dhcp_option_parse(request, size, check_options, NULL);
 385         assert_se(res == DHCP_REQUEST);
 386         assert_se(xid == request->xid);
 387
 388         assert_se(msg_bytes[size - 1] == DHCP_OPTION_END);
 389
 390         if (verbose)
 391                 printf("  recv DHCP Request  0x%08x\n", be32toh(xid));
 392
 393         memcpy(&test_addr_acq_ack[26], &udp_check, sizeof(udp_check));
 394         memcpy(&test_addr_acq_ack[32], &xid, sizeof(xid));
 395         memcpy(&test_addr_acq_ack[56], &mac_addr.ether_addr_octet,
 396                ETHER_ADDR_LEN);
 397
 398         callback_recv = NULL;
 399
 400         res = write(test_fd[1], test_addr_acq_ack,
 401                     sizeof(test_addr_acq_ack));
 402         assert_se(res == sizeof(test_addr_acq_ack));
 403
 404         if (verbose)
 405                 printf("  send DHCP Ack\n");
 406
 407         return 0;
 408 };
 409
 410 static int test_addr_acq_recv_discover(size_t size, DHCPMessage *discover) {
 411         uint16_t udp_check = 0;
 412         uint8_t *msg_bytes = (uint8_t *)discover;
 413         int res;
 414
 415         res = dhcp_option_parse(discover, size, check_options, NULL);
 416         assert_se(res == DHCP_DISCOVER);
 417
 418         assert_se(msg_bytes[size - 1] == DHCP_OPTION_END);
 419
 420         xid = discover->xid;
 421
 422         if (verbose)
 423                 printf("  recv DHCP Discover 0x%08x\n", be32toh(xid));
 424
 425         memcpy(&test_addr_acq_offer[26], &udp_check, sizeof(udp_check));
 426         memcpy(&test_addr_acq_offer[32], &xid, sizeof(xid));
 427         memcpy(&test_addr_acq_offer[56], &mac_addr.ether_addr_octet,
 428                ETHER_ADDR_LEN);
 429
 430         callback_recv = test_addr_acq_recv_request;
 431
 432         res = write(test_fd[1], test_addr_acq_offer,
 433                     sizeof(test_addr_acq_offer));
 434         assert_se(res == sizeof(test_addr_acq_offer));
 435
 436         if (verbose)
 437                 printf("  sent DHCP Offer\n");
 438
 439         return 0;
 440 }
 441
 442 static void test_addr_acq(sd_event *e) {
 443         usec_t time_now = now(CLOCK_MONOTONIC);
 444         sd_dhcp_client *client;
 445         int res, r;
 446
 447         if (verbose)
 448                 printf("* %s\n", __FUNCTION__);
 449
 450         r = sd_dhcp_client_new(&client);
 451         assert_se(r >= 0);
 452         assert_se(client);
 453
 454         r = sd_dhcp_client_attach_event(client, e, 0);
 455         assert_se(r >= 0);
 456
 457         assert_se(sd_dhcp_client_set_index(client, 42) >= 0);
 458         assert_se(sd_dhcp_client_set_mac(client, &mac_addr) >= 0);
 459
 460         assert_se(sd_dhcp_client_set_callback(client, test_addr_acq_acquired, e)
 461                 >= 0);
 462
 463         callback_recv = test_addr_acq_recv_discover;
 464
 465         assert_se(sd_event_add_time(e, &test_hangcheck,
 466                                     CLOCK_MONOTONIC,
 467                                     time_now + 2 * USEC_PER_SEC, 0,
 468                                     test_dhcp_hangcheck, NULL) >= 0);
 469
 470         res = sd_dhcp_client_start(client);
 471         assert_se(res == 0 || res == -EINPROGRESS);
 472
 473         sd_event_loop(e);
 474
 475         test_hangcheck = sd_event_source_unref(test_hangcheck);
 476
 477         sd_dhcp_client_set_callback(client, NULL, NULL);
 478         sd_dhcp_client_stop(client);
 479         sd_dhcp_client_unref(client);
 480
 481         test_fd[1] = safe_close(test_fd[1]);
 482
 483         callback_recv = NULL;
 484         xid = 0;
 485 }
 486
 487 int main(int argc, char *argv[]) {
 488         sd_event *e;
 489
 490         assert_se(sd_event_new(&e) >= 0);
 491
 492         test_request_basic(e);
 493         test_checksum();
 494
 495         test_discover_message(e);
 496         test_addr_acq(e);
 497
 498         return 0;
 499 }