Adding upstream version 255.4.upstream/255.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 562 insertions, 0 deletions

diff --git a/src/libsystemd-network/test-dhcp-client.c b/src/libsystemd-network/test-dhcp-client.c
new file mode 100644
index 0000000..e3f148d
--- /dev/null
+++ b/src/libsystemd-network/test-dhcp-client.c
@@ -0,0 +1,562 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/***
+  Copyright © 2013 Intel Corporation. All rights reserved.
+***/
+
+#include <errno.h>
+#include <net/if.h>
+#include <net/if_arp.h>
+#include <stdio.h>
+#include <sys/socket.h>
+#include <unistd.h>
+#if HAVE_VALGRIND_VALGRIND_H
+#  include <valgrind/valgrind.h>
+#endif
+
+#include "sd-dhcp-client.h"
+#include "sd-event.h"
+
+#include "alloc-util.h"
+#include "dhcp-identifier.h"
+#include "dhcp-network.h"
+#include "dhcp-option.h"
+#include "dhcp-packet.h"
+#include "ether-addr-util.h"
+#include "fd-util.h"
+#include "random-util.h"
+#include "tests.h"
+
+static struct hw_addr_data hw_addr = {
+        .length = ETH_ALEN,
+        .ether = {{ 'A', 'B', 'C', '1', '2', '3' }},
+}, bcast_addr = {
+        .length = ETH_ALEN,
+        .ether = {{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }},
+};
+typedef int (*test_callback_recv_t)(size_t size, DHCPMessage *dhcp);
+
+static bool verbose = true;
+static int test_fd[2];
+static test_callback_recv_t callback_recv;
+static be32_t xid;
+
+static void test_request_basic(sd_event *e) {
+        int r;
+
+        sd_dhcp_client *client;
+
+        if (verbose)
+                printf("* %s\n", __func__);
+
+        /* Initialize client without Anonymize settings. */
+        r = sd_dhcp_client_new(&client, false);
+
+        assert_se(r >= 0);
+        assert_se(client);
+
+        r = sd_dhcp_client_attach_event(client, e, 0);
+        assert_se(r >= 0);
+
+        assert_se(sd_dhcp_client_set_request_option(NULL, 0) == -EINVAL);
+        assert_se(sd_dhcp_client_set_request_address(NULL, NULL) == -EINVAL);
+        assert_se(sd_dhcp_client_set_ifindex(NULL, 0) == -EINVAL);
+
+        assert_se(sd_dhcp_client_set_ifindex(client, 15) == 0);
+        assert_se(sd_dhcp_client_set_ifindex(client, -42) == -EINVAL);
+        assert_se(sd_dhcp_client_set_ifindex(client, -1) == -EINVAL);
+        assert_se(sd_dhcp_client_set_ifindex(client, 0) == -EINVAL);
+        assert_se(sd_dhcp_client_set_ifindex(client, 1) == 0);
+
+        assert_se(sd_dhcp_client_set_hostname(client, "host") == 1);
+        assert_se(sd_dhcp_client_set_hostname(client, "host.domain") == 1);
+        assert_se(sd_dhcp_client_set_hostname(client, NULL) == 1);
+        assert_se(sd_dhcp_client_set_hostname(client, "~host") == -EINVAL);
+        assert_se(sd_dhcp_client_set_hostname(client, "~host.domain") == -EINVAL);
+
+        assert_se(sd_dhcp_client_set_request_option(client, SD_DHCP_OPTION_SUBNET_MASK) == 0);
+        assert_se(sd_dhcp_client_set_request_option(client, SD_DHCP_OPTION_ROUTER) == 0);
+        /* This PRL option is not set when using Anonymize, but in this test
+         * Anonymize settings are not being used. */
+        assert_se(sd_dhcp_client_set_request_option(client, SD_DHCP_OPTION_HOST_NAME) == 0);
+        assert_se(sd_dhcp_client_set_request_option(client, SD_DHCP_OPTION_DOMAIN_NAME) == 0);
+        assert_se(sd_dhcp_client_set_request_option(client, SD_DHCP_OPTION_DOMAIN_NAME_SERVER) == 0);
+
+        assert_se(sd_dhcp_client_set_request_option(client, SD_DHCP_OPTION_PAD) == -EINVAL);
+        assert_se(sd_dhcp_client_set_request_option(client, SD_DHCP_OPTION_END) == -EINVAL);
+        assert_se(sd_dhcp_client_set_request_option(client, SD_DHCP_OPTION_MESSAGE_TYPE) == -EINVAL);
+        assert_se(sd_dhcp_client_set_request_option(client, SD_DHCP_OPTION_OVERLOAD) == -EINVAL);
+        assert_se(sd_dhcp_client_set_request_option(client, SD_DHCP_OPTION_PARAMETER_REQUEST_LIST) == -EINVAL);
+
+        /* RFC7844: option 33 (SD_DHCP_OPTION_STATIC_ROUTE) is set in the
+         * default PRL when using Anonymize, so it is changed to other option
+         * that is not set by default, to check that it was set successfully.
+         * Options not set by default (using or not anonymize) are option 17
+         * (SD_DHCP_OPTION_ROOT_PATH) and 42 (SD_DHCP_OPTION_NTP_SERVER) */
+        assert_se(sd_dhcp_client_set_request_option(client, 17) == 1);
+        assert_se(sd_dhcp_client_set_request_option(client, 17) == 0);
+        assert_se(sd_dhcp_client_set_request_option(client, 42) == 1);
+        assert_se(sd_dhcp_client_set_request_option(client, 17) == 0);
+
+        sd_dhcp_client_unref(client);
+}
+
+static void test_request_anonymize(sd_event *e) {
+        int r;
+
+        sd_dhcp_client *client;
+
+        if (verbose)
+                printf("* %s\n", __func__);
+
+        /* Initialize client with Anonymize settings. */
+        r = sd_dhcp_client_new(&client, true);
+
+        assert_se(r >= 0);
+        assert_se(client);
+
+        r = sd_dhcp_client_attach_event(client, e, 0);
+        assert_se(r >= 0);
+
+        assert_se(sd_dhcp_client_set_request_option(client, SD_DHCP_OPTION_NETBIOS_NAME_SERVER) == 0);
+        /* This PRL option is not set when using Anonymize */
+        assert_se(sd_dhcp_client_set_request_option(client, SD_DHCP_OPTION_HOST_NAME) == 1);
+        assert_se(sd_dhcp_client_set_request_option(client, SD_DHCP_OPTION_PARAMETER_REQUEST_LIST) == -EINVAL);
+
+        /* RFC7844: option 101 (SD_DHCP_OPTION_NEW_TZDB_TIMEZONE) is not set in the
+         * default PRL when using Anonymize, */
+        assert_se(sd_dhcp_client_set_request_option(client, 101) == 1);
+        assert_se(sd_dhcp_client_set_request_option(client, 101) == 0);
+
+        sd_dhcp_client_unref(client);
+}
+
+static void test_checksum(void) {
+        uint8_t buf[20] = {
+                0x45, 0x00, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00,
+                0x40, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                0xff, 0xff, 0xff, 0xff
+        };
+
+        if (verbose)
+                printf("* %s\n", __func__);
+
+        assert_se(dhcp_packet_checksum((uint8_t*)&buf, 20) == be16toh(0x78ae));
+}
+
+static void test_dhcp_identifier_set_iaid(void) {
+        uint32_t iaid_legacy;
+        be32_t iaid;
+
+        assert_se(dhcp_identifier_set_iaid(NULL, &hw_addr, /* legacy = */ true, &iaid_legacy) >= 0);
+        assert_se(dhcp_identifier_set_iaid(NULL, &hw_addr, /* legacy = */ false, &iaid) >= 0);
+
+        /* we expect, that the MAC address was hashed. The legacy value is in native
+         * endianness. */
+        assert_se(iaid_legacy == 0x8dde4ba8u);
+        assert_se(iaid  == htole32(0x8dde4ba8u));
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+        assert_se(iaid == iaid_legacy);
+#else
+        assert_se(iaid == bswap_32(iaid_legacy));
+#endif
+}
+
+static int check_options(uint8_t code, uint8_t len, const void *option, void *userdata) {
+        switch (code) {
+        case SD_DHCP_OPTION_CLIENT_IDENTIFIER:
+        {
+                uint32_t iaid;
+                struct duid duid;
+                size_t duid_len;
+
+                assert_se(dhcp_identifier_set_duid_en(&duid, &duid_len) >= 0);
+                assert_se(dhcp_identifier_set_iaid(NULL, &hw_addr, /* legacy = */ true, &iaid) >= 0);
+
+                assert_se(len == sizeof(uint8_t) + sizeof(uint32_t) + duid_len);
+                assert_se(len == 19);
+                assert_se(((uint8_t*) option)[0] == 0xff);
+
+                assert_se(memcmp((uint8_t*) option + 1, &iaid, sizeof(iaid)) == 0);
+                assert_se(memcmp((uint8_t*) option + 5, &duid, duid_len) == 0);
+                break;
+        }
+
+        default:
+                break;
+        }
+
+        return 0;
+}
+
+int dhcp_network_send_raw_socket(int s, const union sockaddr_union *link, const void *packet, size_t len) {
+        size_t size;
+        _cleanup_free_ DHCPPacket *discover = NULL;
+        uint16_t ip_check, udp_check;
+
+        assert_se(s >= 0);
+        assert_se(packet);
+
+        size = sizeof(DHCPPacket);
+        assert_se(len > size);
+
+        discover = memdup(packet, len);
+
+        assert_se(discover->ip.ttl == IPDEFTTL);
+        assert_se(discover->ip.protocol == IPPROTO_UDP);
+        assert_se(discover->ip.saddr == INADDR_ANY);
+        assert_se(discover->ip.daddr == INADDR_BROADCAST);
+        assert_se(discover->udp.source == be16toh(DHCP_PORT_CLIENT));
+        assert_se(discover->udp.dest == be16toh(DHCP_PORT_SERVER));
+
+        ip_check = discover->ip.check;
+
+        discover->ip.ttl = 0;
+        discover->ip.check = discover->udp.len;
+
+        udp_check = ~dhcp_packet_checksum((uint8_t*)&discover->ip.ttl, len - 8);
+        assert_se(udp_check == 0xffff);
+
+        discover->ip.ttl = IPDEFTTL;
+        discover->ip.check = ip_check;
+
+        ip_check = ~dhcp_packet_checksum((uint8_t*)&discover->ip, sizeof(discover->ip));
+        assert_se(ip_check == 0xffff);
+
+        assert_se(discover->dhcp.xid);
+        assert_se(memcmp(discover->dhcp.chaddr, hw_addr.bytes, hw_addr.length) == 0);
+
+        size = len - sizeof(struct iphdr) - sizeof(struct udphdr);
+
+        assert_se(callback_recv);
+        callback_recv(size, &discover->dhcp);
+
+        return 575;
+}
+
+int dhcp_network_bind_raw_socket(
+                int ifindex,
+                union sockaddr_union *link,
+                uint32_t id,
+                const struct hw_addr_data *_hw_addr,
+                const struct hw_addr_data *_bcast_addr,
+                uint16_t arp_type,
+                uint16_t port,
+                bool so_priority_set,
+                int so_priority) {
+
+        if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0, test_fd) < 0)
+                return -errno;
+
+        return test_fd[0];
+}
+
+int dhcp_network_bind_udp_socket(int ifindex, be32_t address, uint16_t port, int ip_service_type) {
+        int fd;
+
+        fd = socket(AF_INET, SOCK_DGRAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0);
+        if (fd < 0)
+                return -errno;
+
+        return fd;
+}
+
+int dhcp_network_send_udp_socket(int s, be32_t address, uint16_t port, const void *packet, size_t len) {
+        return 0;
+}
+
+static int test_discover_message_verify(size_t size, struct DHCPMessage *dhcp) {
+        int res;
+
+        res = dhcp_option_parse(dhcp, size, check_options, NULL, NULL);
+        assert_se(res == DHCP_DISCOVER);
+
+        if (verbose)
+                printf("  recv DHCP Discover 0x%08x\n", be32toh(dhcp->xid));
+
+        return 0;
+}
+
+static void test_discover_message(sd_event *e) {
+        sd_dhcp_client *client;
+        int res, r;
+
+        if (verbose)
+                printf("* %s\n", __func__);
+
+        r = sd_dhcp_client_new(&client, false);
+        assert_se(r >= 0);
+        assert_se(client);
+
+        r = sd_dhcp_client_attach_event(client, e, 0);
+        assert_se(r >= 0);
+
+        assert_se(sd_dhcp_client_set_ifindex(client, 42) >= 0);
+        assert_se(sd_dhcp_client_set_mac(client, hw_addr.bytes, bcast_addr.bytes, hw_addr.length, ARPHRD_ETHER) >= 0);
+
+        assert_se(sd_dhcp_client_set_request_option(client, 248) >= 0);
+
+        callback_recv = test_discover_message_verify;
+
+        res = sd_dhcp_client_start(client);
+
+        assert_se(IN_SET(res, 0, -EINPROGRESS));
+
+        sd_event_run(e, UINT64_MAX);
+
+        sd_dhcp_client_stop(client);
+        sd_dhcp_client_unref(client);
+
+        test_fd[1] = safe_close(test_fd[1]);
+
+        callback_recv = NULL;
+}
+
+static uint8_t test_addr_acq_offer[] = {
+        0x45, 0x10, 0x01, 0x48, 0x00, 0x00, 0x00, 0x00,
+        0x80, 0x11, 0xb3, 0x84, 0xc0, 0xa8, 0x02, 0x01,
+        0xc0, 0xa8, 0x02, 0xbf, 0x00, 0x43, 0x00, 0x44,
+        0x01, 0x34, 0x00, 0x00, 0x02, 0x01, 0x06, 0x00,
+        0x6f, 0x95, 0x2f, 0x30, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0xc0, 0xa8, 0x02, 0xbf,
+        0xc0, 0xa8, 0x02, 0x01, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x63, 0x82, 0x53, 0x63, 0x35, 0x01, 0x02, 0x36,
+        0x04, 0xc0, 0xa8, 0x02, 0x01, 0x33, 0x04, 0x00,
+        0x00, 0x02, 0x58, 0x01, 0x04, 0xff, 0xff, 0xff,
+        0x00, 0x2a, 0x04, 0xc0, 0xa8, 0x02, 0x01, 0x0f,
+        0x09, 0x6c, 0x61, 0x62, 0x2e, 0x69, 0x6e, 0x74,
+        0x72, 0x61, 0x03, 0x04, 0xc0, 0xa8, 0x02, 0x01,
+        0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+};
+
+static uint8_t test_addr_acq_ack[] = {
+        0x45, 0x10, 0x01, 0x48, 0x00, 0x00, 0x00, 0x00,
+        0x80, 0x11, 0xb3, 0x84, 0xc0, 0xa8, 0x02, 0x01,
+        0xc0, 0xa8, 0x02, 0xbf, 0x00, 0x43, 0x00, 0x44,
+        0x01, 0x34, 0x00, 0x00, 0x02, 0x01, 0x06, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0xc0, 0xa8, 0x02, 0xbf,
+        0xc0, 0xa8, 0x02, 0x01, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x63, 0x82, 0x53, 0x63, 0x35, 0x01, 0x05, 0x36,
+        0x04, 0xc0, 0xa8, 0x02, 0x01, 0x33, 0x04, 0x00,
+        0x00, 0x02, 0x58, 0x01, 0x04, 0xff, 0xff, 0xff,
+        0x00, 0x2a, 0x04, 0xc0, 0xa8, 0x02, 0x01, 0x0f,
+        0x09, 0x6c, 0x61, 0x62, 0x2e, 0x69, 0x6e, 0x74,
+        0x72, 0x61, 0x03, 0x04, 0xc0, 0xa8, 0x02, 0x01,
+        0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+};
+
+static int test_addr_acq_acquired(sd_dhcp_client *client, int event,
+                                   void *userdata) {
+        sd_event *e = userdata;
+        sd_dhcp_lease *lease;
+        struct in_addr addr;
+        const struct in_addr *addrs;
+
+        assert_se(client);
+        assert_se(IN_SET(event, SD_DHCP_CLIENT_EVENT_IP_ACQUIRE, SD_DHCP_CLIENT_EVENT_SELECTING));
+
+        assert_se(sd_dhcp_client_get_lease(client, &lease) >= 0);
+        assert_se(lease);
+
+        assert_se(sd_dhcp_lease_get_address(lease, &addr) >= 0);
+        assert_se(memcmp(&addr.s_addr, &test_addr_acq_ack[44],
+                      sizeof(addr.s_addr)) == 0);
+
+        assert_se(sd_dhcp_lease_get_netmask(lease, &addr) >= 0);
+        assert_se(memcmp(&addr.s_addr, &test_addr_acq_ack[285],
+                      sizeof(addr.s_addr)) == 0);
+
+        assert_se(sd_dhcp_lease_get_router(lease, &addrs) == 1);
+        assert_se(memcmp(&addrs[0].s_addr, &test_addr_acq_ack[308],
+                         sizeof(addrs[0].s_addr)) == 0);
+
+        if (verbose)
+                printf("  DHCP address acquired\n");
+
+        sd_event_exit(e, 0);
+
+        return 0;
+}
+
+static int test_addr_acq_recv_request(size_t size, DHCPMessage *request) {
+        uint16_t udp_check = 0;
+        uint8_t *msg_bytes = (uint8_t *)request;
+        int res;
+
+        res = dhcp_option_parse(request, size, check_options, NULL, NULL);
+        assert_se(res == DHCP_REQUEST);
+        assert_se(xid == request->xid);
+
+        assert_se(msg_bytes[size - 1] == SD_DHCP_OPTION_END);
+
+        if (verbose)
+                printf("  recv DHCP Request  0x%08x\n", be32toh(xid));
+
+        memcpy(&test_addr_acq_ack[26], &udp_check, sizeof(udp_check));
+        memcpy(&test_addr_acq_ack[32], &xid, sizeof(xid));
+        memcpy(&test_addr_acq_ack[56], hw_addr.bytes, hw_addr.length);
+
+        callback_recv = NULL;
+
+        res = write(test_fd[1], test_addr_acq_ack,
+                    sizeof(test_addr_acq_ack));
+        assert_se(res == sizeof(test_addr_acq_ack));
+
+        if (verbose)
+                printf("  send DHCP Ack\n");
+
+        return 0;
+};
+
+static int test_addr_acq_recv_discover(size_t size, DHCPMessage *discover) {
+        uint16_t udp_check = 0;
+        uint8_t *msg_bytes = (uint8_t *)discover;
+        int res;
+
+        res = dhcp_option_parse(discover, size, check_options, NULL, NULL);
+        assert_se(res == DHCP_DISCOVER);
+
+        assert_se(msg_bytes[size - 1] == SD_DHCP_OPTION_END);
+
+        xid = discover->xid;
+
+        if (verbose)
+                printf("  recv DHCP Discover 0x%08x\n", be32toh(xid));
+
+        memcpy(&test_addr_acq_offer[26], &udp_check, sizeof(udp_check));
+        memcpy(&test_addr_acq_offer[32], &xid, sizeof(xid));
+        memcpy(&test_addr_acq_offer[56], hw_addr.bytes, hw_addr.length);
+
+        callback_recv = test_addr_acq_recv_request;
+
+        res = write(test_fd[1], test_addr_acq_offer,
+                    sizeof(test_addr_acq_offer));
+        assert_se(res == sizeof(test_addr_acq_offer));
+
+        if (verbose)
+                printf("  sent DHCP Offer\n");
+
+        return 0;
+}
+
+static void test_addr_acq(sd_event *e) {
+        sd_dhcp_client *client;
+        int res, r;
+
+        if (verbose)
+                printf("* %s\n", __func__);
+
+        r = sd_dhcp_client_new(&client, false);
+        assert_se(r >= 0);
+        assert_se(client);
+
+        r = sd_dhcp_client_attach_event(client, e, 0);
+        assert_se(r >= 0);
+
+        assert_se(sd_dhcp_client_set_ifindex(client, 42) >= 0);
+        assert_se(sd_dhcp_client_set_mac(client, hw_addr.bytes, bcast_addr.bytes, hw_addr.length, ARPHRD_ETHER) >= 0);
+
+        assert_se(sd_dhcp_client_set_callback(client, test_addr_acq_acquired, e) >= 0);
+
+        callback_recv = test_addr_acq_recv_discover;
+
+        assert_se(sd_event_add_time_relative(e, NULL, CLOCK_BOOTTIME,
+                                             2 * USEC_PER_SEC, 0,
+                                             NULL, INT_TO_PTR(-ETIMEDOUT)) >= 0);
+
+        res = sd_dhcp_client_start(client);
+        assert_se(IN_SET(res, 0, -EINPROGRESS));
+
+        assert_se(sd_event_loop(e) >= 0);
+
+        assert_se(sd_dhcp_client_set_callback(client, NULL, NULL) >= 0);
+        assert_se(sd_dhcp_client_stop(client) >= 0);
+        sd_dhcp_client_unref(client);
+
+        test_fd[1] = safe_close(test_fd[1]);
+
+        callback_recv = NULL;
+        xid = 0;
+}
+
+int main(int argc, char *argv[]) {
+        _cleanup_(sd_event_unrefp) sd_event *e;
+
+        assert_se(setenv("SYSTEMD_NETWORK_TEST_MODE", "1", 1) >= 0);
+
+        test_setup_logging(LOG_DEBUG);
+
+        assert_se(sd_event_new(&e) >= 0);
+
+        test_request_basic(e);
+        test_request_anonymize(e);
+        test_checksum();
+        test_dhcp_identifier_set_iaid();
+
+        test_discover_message(e);
+        test_addr_acq(e);
+
+#if HAVE_VALGRIND_VALGRIND_H
+        /* Make sure the async_close thread has finished.
+         * valgrind would report some of the phread_* structures
+         * as not cleaned up properly. */
+        if (RUNNING_ON_VALGRIND)
+                sleep(1);
+#endif
+
+        return 0;
+}