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-rw-r--r--src/libsystemd-network/test-dhcp-client.c496
1 files changed, 496 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 0000000000..8061e5fa83
--- /dev/null
+++ b/src/libsystemd-network/test-dhcp-client.c
@@ -0,0 +1,496 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright (C) 2013 Intel Corporation. All rights reserved.
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdlib.h>
+#include <assert.h>
+#include <errno.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+#include "util.h"
+#include "socket-util.h"
+
+#include "dhcp-protocol.h"
+#include "dhcp-internal.h"
+#include "sd-dhcp-client.h"
+
+static struct ether_addr mac_addr = {
+ .ether_addr_octet = {'A', 'B', 'C', '1', '2', '3'}
+};
+
+typedef int (*test_callback_recv_t)(size_t size, DHCPMessage *dhcp);
+
+static bool verbose = false;
+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", __FUNCTION__);
+
+ r = sd_dhcp_client_new(&client);
+
+ 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_index(NULL, 0) == -EINVAL);
+
+ assert_se(sd_dhcp_client_set_index(client, 15) == 0);
+ assert_se(sd_dhcp_client_set_index(client, -42) == -EINVAL);
+ assert_se(sd_dhcp_client_set_index(client, -1) == 0);
+
+ assert_se(sd_dhcp_client_set_request_option(client,
+ DHCP_OPTION_SUBNET_MASK) == -EEXIST);
+ assert_se(sd_dhcp_client_set_request_option(client,
+ DHCP_OPTION_ROUTER) == -EEXIST);
+ assert_se(sd_dhcp_client_set_request_option(client,
+ DHCP_OPTION_HOST_NAME) == -EEXIST);
+ assert_se(sd_dhcp_client_set_request_option(client,
+ DHCP_OPTION_DOMAIN_NAME) == -EEXIST);
+ assert_se(sd_dhcp_client_set_request_option(client,
+ DHCP_OPTION_DOMAIN_NAME_SERVER)
+ == -EEXIST);
+ assert_se(sd_dhcp_client_set_request_option(client,
+ DHCP_OPTION_NTP_SERVER) == -EEXIST);
+
+ assert_se(sd_dhcp_client_set_request_option(client,
+ DHCP_OPTION_PAD) == -EINVAL);
+ assert_se(sd_dhcp_client_set_request_option(client,
+ DHCP_OPTION_END) == -EINVAL);
+ assert_se(sd_dhcp_client_set_request_option(client,
+ DHCP_OPTION_MESSAGE_TYPE) == -EINVAL);
+ assert_se(sd_dhcp_client_set_request_option(client,
+ DHCP_OPTION_OVERLOAD) == -EINVAL);
+ assert_se(sd_dhcp_client_set_request_option(client,
+ DHCP_OPTION_PARAMETER_REQUEST_LIST)
+ == -EINVAL);
+
+ assert_se(sd_dhcp_client_set_request_option(client, 33) == 0);
+ assert_se(sd_dhcp_client_set_request_option(client, 33) == -EEXIST);
+ assert_se(sd_dhcp_client_set_request_option(client, 44) == 0);
+ assert_se(sd_dhcp_client_set_request_option(client, 33) == -EEXIST);
+}
+
+static uint16_t client_checksum(void *buf, int len)
+{
+ uint32_t sum;
+ uint16_t *check;
+ int i;
+ uint8_t *odd;
+
+ sum = 0;
+ check = buf;
+
+ for (i = 0; i < len / 2 ; i++)
+ sum += check[i];
+
+ if (len & 0x01) {
+ odd = buf;
+ sum += odd[len - 1];
+ }
+
+ while (sum >> 16)
+ sum = (sum & 0xffff) + (sum >> 16);
+
+ return ~sum;
+}
+
+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", __FUNCTION__);
+
+ assert_se(client_checksum(&buf, 20) == be16toh(0x78ae));
+}
+
+static int check_options(uint8_t code, uint8_t len, const uint8_t *option,
+ void *user_data)
+{
+ 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;
+ uint16_t ip_check, udp_check;
+
+ assert_se(s >= 0);
+ assert_se(packet);
+
+ size = sizeof(DHCPPacket) + 4;
+ 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 = ~client_checksum(&discover->ip.ttl, len - 8);
+ assert_se(udp_check == 0xffff);
+
+ discover->ip.ttl = IPDEFTTL;
+ discover->ip.check = ip_check;
+
+ ip_check = ~client_checksum(&discover->ip, sizeof(discover->ip));
+ assert_se(ip_check == 0xffff);
+
+ assert_se(discover->dhcp.xid);
+ assert_se(memcmp(discover->dhcp.chaddr,
+ &mac_addr.ether_addr_octet, 6) == 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 index, union sockaddr_union *link)
+{
+ if (socketpair(AF_UNIX, SOCK_STREAM, 0, test_fd) < 0)
+ return -errno;
+
+ return test_fd[0];
+}
+
+int dhcp_network_bind_udp_socket(int index, be32_t address, uint16_t port)
+{
+ return 0;
+}
+
+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);
+ 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", __FUNCTION__);
+
+ r = sd_dhcp_client_new(&client);
+ 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_index(client, 42) >= 0);
+ assert_se(sd_dhcp_client_set_mac(client, &mac_addr) >= 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(res == 0 || res == -EINPROGRESS);
+
+ sd_event_run(e, (uint64_t) -1);
+
+ sd_dhcp_client_stop(client);
+ sd_dhcp_client_free(client);
+
+ close(test_fd[0]);
+ 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 void test_addr_acq_acquired(sd_dhcp_client *client, int event,
+ void *userdata)
+{
+ sd_event *e = userdata;
+ sd_dhcp_lease *lease;
+ struct in_addr addr;
+
+ assert_se(client);
+ assert_se(event == DHCP_EVENT_IP_ACQUIRE);
+
+ 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, &addr) >= 0);
+ assert_se(memcmp(&addr.s_addr, &test_addr_acq_ack[308],
+ sizeof(addr.s_addr)) == 0);
+
+ if (verbose)
+ printf(" DHCP address acquired\n");
+
+ sd_event_exit(e, 0);
+}
+
+static int test_addr_acq_recv_request(size_t size, DHCPMessage *request)
+{
+ uint16_t udp_check = 0;
+ int res;
+
+ res = dhcp_option_parse(request, size, check_options, NULL);
+ assert_se(res == DHCP_REQUEST);
+ assert_se(xid == request->xid);
+
+ 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], &mac_addr.ether_addr_octet,
+ ETHER_ADDR_LEN);
+
+ 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;
+ int res;
+
+ res = dhcp_option_parse(discover, size, check_options, NULL);
+ assert_se(res == DHCP_DISCOVER);
+
+ 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], &mac_addr.ether_addr_octet,
+ ETHER_ADDR_LEN);
+
+ 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(" send 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", __FUNCTION__);
+
+ r = sd_dhcp_client_new(&client);
+ 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_index(client, 42) >= 0);
+ assert_se(sd_dhcp_client_set_mac(client, &mac_addr) >= 0);
+
+ assert_se(sd_dhcp_client_set_callback(client, test_addr_acq_acquired, e)
+ >= 0);
+
+ callback_recv = test_addr_acq_recv_discover;
+
+ res = sd_dhcp_client_start(client);
+ assert_se(res == 0 || res == -EINPROGRESS);
+
+ sd_event_loop(e);
+
+ sd_dhcp_client_set_callback(client, NULL, NULL);
+ sd_dhcp_client_stop(client);
+ sd_dhcp_client_free(client);
+
+ close(test_fd[0]);
+ close(test_fd[1]);
+
+ callback_recv = NULL;
+ xid = 0;
+}
+
+int main(int argc, char *argv[])
+{
+ sd_event *e;
+
+ assert_se(sd_event_new(&e) >= 0);
+
+ test_request_basic(e);
+ test_checksum();
+
+ test_discover_message(e);
+ test_addr_acq(e);
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-02 08:40:27 +0100