505 lines
17 KiB
C
505 lines
17 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright (C) 2013 Intel Corporation. All rights reserved.
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <stdlib.h>
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#include <assert.h>
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#include <errno.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <unistd.h>
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#include "util.h"
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#include "socket-util.h"
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#include "dhcp-protocol.h"
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#include "dhcp-internal.h"
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#include "sd-dhcp-client.h"
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static struct ether_addr mac_addr = {
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.ether_addr_octet = {'A', 'B', 'C', '1', '2', '3'}
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};
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typedef int (*test_callback_recv_t)(size_t size, DHCPMessage *dhcp);
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static bool verbose = false;
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static int test_fd[2];
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static test_callback_recv_t callback_recv;
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static be32_t xid;
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static sd_event_source *test_hangcheck;
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static int test_dhcp_hangcheck(sd_event_source *s, uint64_t usec,
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void *userdata)
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{
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assert_not_reached("Test case should have completed in 2 seconds");
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return 0;
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}
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static void test_request_basic(sd_event *e)
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{
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int r;
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sd_dhcp_client *client;
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if (verbose)
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printf("* %s\n", __FUNCTION__);
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r = sd_dhcp_client_new(&client);
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assert_se(r >= 0);
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assert_se(client);
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r = sd_dhcp_client_attach_event(client, e, 0);
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assert_se(r >= 0);
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assert_se(sd_dhcp_client_set_request_option(NULL, 0) == -EINVAL);
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assert_se(sd_dhcp_client_set_request_address(NULL, NULL) == -EINVAL);
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assert_se(sd_dhcp_client_set_index(NULL, 0) == -EINVAL);
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assert_se(sd_dhcp_client_set_index(client, 15) == 0);
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assert_se(sd_dhcp_client_set_index(client, -42) == -EINVAL);
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assert_se(sd_dhcp_client_set_index(client, -1) == 0);
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assert_se(sd_dhcp_client_set_request_option(client,
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DHCP_OPTION_SUBNET_MASK) == -EEXIST);
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assert_se(sd_dhcp_client_set_request_option(client,
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DHCP_OPTION_ROUTER) == -EEXIST);
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assert_se(sd_dhcp_client_set_request_option(client,
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DHCP_OPTION_HOST_NAME) == -EEXIST);
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assert_se(sd_dhcp_client_set_request_option(client,
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DHCP_OPTION_DOMAIN_NAME) == -EEXIST);
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assert_se(sd_dhcp_client_set_request_option(client,
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DHCP_OPTION_DOMAIN_NAME_SERVER)
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== -EEXIST);
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assert_se(sd_dhcp_client_set_request_option(client,
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DHCP_OPTION_NTP_SERVER) == -EEXIST);
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assert_se(sd_dhcp_client_set_request_option(client,
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DHCP_OPTION_PAD) == -EINVAL);
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assert_se(sd_dhcp_client_set_request_option(client,
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DHCP_OPTION_END) == -EINVAL);
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assert_se(sd_dhcp_client_set_request_option(client,
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DHCP_OPTION_MESSAGE_TYPE) == -EINVAL);
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assert_se(sd_dhcp_client_set_request_option(client,
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DHCP_OPTION_OVERLOAD) == -EINVAL);
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assert_se(sd_dhcp_client_set_request_option(client,
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DHCP_OPTION_PARAMETER_REQUEST_LIST)
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== -EINVAL);
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assert_se(sd_dhcp_client_set_request_option(client, 33) == 0);
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assert_se(sd_dhcp_client_set_request_option(client, 33) == -EEXIST);
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assert_se(sd_dhcp_client_set_request_option(client, 44) == 0);
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assert_se(sd_dhcp_client_set_request_option(client, 33) == -EEXIST);
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}
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static void test_checksum(void)
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{
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uint8_t buf[20] = {
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0x45, 0x00, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00,
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0x40, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0xff, 0xff, 0xff, 0xff
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};
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if (verbose)
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printf("* %s\n", __FUNCTION__);
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assert_se(dhcp_packet_checksum(&buf, 20) == be16toh(0x78ae));
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}
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static int check_options(uint8_t code, uint8_t len, const uint8_t *option,
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void *user_data)
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{
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switch(code) {
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case DHCP_OPTION_CLIENT_IDENTIFIER:
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assert_se(len == 7);
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assert_se(option[0] == 0x01);
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assert_se(memcmp(&option[1], &mac_addr, ETH_ALEN) == 0);
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break;
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default:
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break;
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}
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return 0;
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}
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int dhcp_network_send_raw_socket(int s, const union sockaddr_union *link,
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const void *packet, size_t len)
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{
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size_t size;
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_cleanup_free_ DHCPPacket *discover;
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uint16_t ip_check, udp_check;
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assert_se(s >= 0);
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assert_se(packet);
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size = sizeof(DHCPPacket) + 4;
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assert_se(len > size);
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discover = memdup(packet, len);
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assert_se(discover->ip.ttl == IPDEFTTL);
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assert_se(discover->ip.protocol == IPPROTO_UDP);
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assert_se(discover->ip.saddr == INADDR_ANY);
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assert_se(discover->ip.daddr == INADDR_BROADCAST);
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assert_se(discover->udp.source == be16toh(DHCP_PORT_CLIENT));
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assert_se(discover->udp.dest == be16toh(DHCP_PORT_SERVER));
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ip_check = discover->ip.check;
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discover->ip.ttl = 0;
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discover->ip.check = discover->udp.len;
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udp_check = ~dhcp_packet_checksum(&discover->ip.ttl, len - 8);
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assert_se(udp_check == 0xffff);
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discover->ip.ttl = IPDEFTTL;
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discover->ip.check = ip_check;
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ip_check = ~dhcp_packet_checksum(&discover->ip, sizeof(discover->ip));
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assert_se(ip_check == 0xffff);
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assert_se(discover->dhcp.xid);
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assert_se(memcmp(discover->dhcp.chaddr,
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&mac_addr.ether_addr_octet, 6) == 0);
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size = len - sizeof(struct iphdr) - sizeof(struct udphdr);
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assert_se(callback_recv);
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callback_recv(size, &discover->dhcp);
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return 575;
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}
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int dhcp_network_bind_raw_socket(int index, union sockaddr_union *link)
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{
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if (socketpair(AF_UNIX, SOCK_STREAM, 0, test_fd) < 0)
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return -errno;
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return test_fd[0];
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}
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int dhcp_network_bind_udp_socket(int index, be32_t address, uint16_t port)
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{
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return 0;
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}
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int dhcp_network_send_udp_socket(int s, be32_t address, uint16_t port,
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const void *packet, size_t len)
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{
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return 0;
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}
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static int test_discover_message_verify(size_t size, struct DHCPMessage *dhcp)
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{
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int res;
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res = dhcp_option_parse(dhcp, size, check_options, NULL);
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assert_se(res == DHCP_DISCOVER);
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if (verbose)
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printf(" recv DHCP Discover 0x%08x\n", be32toh(dhcp->xid));
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return 0;
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}
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static void test_discover_message(sd_event *e)
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{
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sd_dhcp_client *client;
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int res, r;
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if (verbose)
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printf("* %s\n", __FUNCTION__);
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r = sd_dhcp_client_new(&client);
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assert_se(r >= 0);
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assert_se(client);
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r = sd_dhcp_client_attach_event(client, e, 0);
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assert_se(r >= 0);
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assert_se(sd_dhcp_client_set_index(client, 42) >= 0);
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assert_se(sd_dhcp_client_set_mac(client, &mac_addr) >= 0);
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assert_se(sd_dhcp_client_set_request_option(client, 248) >= 0);
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callback_recv = test_discover_message_verify;
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res = sd_dhcp_client_start(client);
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assert_se(res == 0 || res == -EINPROGRESS);
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sd_event_run(e, (uint64_t) -1);
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sd_dhcp_client_stop(client);
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sd_dhcp_client_free(client);
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test_fd[1] = safe_close(test_fd[1]);
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callback_recv = NULL;
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}
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static uint8_t test_addr_acq_offer[] = {
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0x45, 0x10, 0x01, 0x48, 0x00, 0x00, 0x00, 0x00,
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0x80, 0x11, 0xb3, 0x84, 0xc0, 0xa8, 0x02, 0x01,
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0xc0, 0xa8, 0x02, 0xbf, 0x00, 0x43, 0x00, 0x44,
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0x01, 0x34, 0x00, 0x00, 0x02, 0x01, 0x06, 0x00,
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0x6f, 0x95, 0x2f, 0x30, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0xc0, 0xa8, 0x02, 0xbf,
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0xc0, 0xa8, 0x02, 0x01, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x63, 0x82, 0x53, 0x63, 0x35, 0x01, 0x02, 0x36,
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0x04, 0xc0, 0xa8, 0x02, 0x01, 0x33, 0x04, 0x00,
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0x00, 0x02, 0x58, 0x01, 0x04, 0xff, 0xff, 0xff,
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0x00, 0x2a, 0x04, 0xc0, 0xa8, 0x02, 0x01, 0x0f,
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0x09, 0x6c, 0x61, 0x62, 0x2e, 0x69, 0x6e, 0x74,
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0x72, 0x61, 0x03, 0x04, 0xc0, 0xa8, 0x02, 0x01,
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0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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};
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static uint8_t test_addr_acq_ack[] = {
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0x45, 0x10, 0x01, 0x48, 0x00, 0x00, 0x00, 0x00,
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0x80, 0x11, 0xb3, 0x84, 0xc0, 0xa8, 0x02, 0x01,
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0xc0, 0xa8, 0x02, 0xbf, 0x00, 0x43, 0x00, 0x44,
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0x01, 0x34, 0x00, 0x00, 0x02, 0x01, 0x06, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0xc0, 0xa8, 0x02, 0xbf,
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0xc0, 0xa8, 0x02, 0x01, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x63, 0x82, 0x53, 0x63, 0x35, 0x01, 0x05, 0x36,
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0x04, 0xc0, 0xa8, 0x02, 0x01, 0x33, 0x04, 0x00,
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0x00, 0x02, 0x58, 0x01, 0x04, 0xff, 0xff, 0xff,
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0x00, 0x2a, 0x04, 0xc0, 0xa8, 0x02, 0x01, 0x0f,
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0x09, 0x6c, 0x61, 0x62, 0x2e, 0x69, 0x6e, 0x74,
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0x72, 0x61, 0x03, 0x04, 0xc0, 0xa8, 0x02, 0x01,
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0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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};
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static void test_addr_acq_acquired(sd_dhcp_client *client, int event,
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void *userdata)
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{
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sd_event *e = userdata;
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sd_dhcp_lease *lease;
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struct in_addr addr;
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assert_se(client);
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assert_se(event == DHCP_EVENT_IP_ACQUIRE);
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assert_se(sd_dhcp_client_get_lease(client, &lease) >= 0);
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assert_se(lease);
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assert_se(sd_dhcp_lease_get_address(lease, &addr) >= 0);
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assert_se(memcmp(&addr.s_addr, &test_addr_acq_ack[44],
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sizeof(addr.s_addr)) == 0);
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assert_se(sd_dhcp_lease_get_netmask(lease, &addr) >= 0);
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assert_se(memcmp(&addr.s_addr, &test_addr_acq_ack[285],
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sizeof(addr.s_addr)) == 0);
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assert_se(sd_dhcp_lease_get_router(lease, &addr) >= 0);
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assert_se(memcmp(&addr.s_addr, &test_addr_acq_ack[308],
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sizeof(addr.s_addr)) == 0);
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if (verbose)
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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;
|
|
uint8_t *msg_bytes = (uint8_t *)request;
|
|
int res;
|
|
|
|
res = dhcp_option_parse(request, size, check_options, NULL);
|
|
assert_se(res == DHCP_REQUEST);
|
|
assert_se(xid == request->xid);
|
|
|
|
assert_se(msg_bytes[size - 1] == 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], &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;
|
|
uint8_t *msg_bytes = (uint8_t *)discover;
|
|
int res;
|
|
|
|
res = dhcp_option_parse(discover, size, check_options, NULL);
|
|
assert_se(res == DHCP_DISCOVER);
|
|
|
|
assert_se(msg_bytes[size - 1] == 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], &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)
|
|
{
|
|
usec_t time_now = now(CLOCK_MONOTONIC);
|
|
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;
|
|
|
|
assert_se(sd_event_add_time(e, &test_hangcheck,
|
|
CLOCK_MONOTONIC,
|
|
time_now + 2 * USEC_PER_SEC, 0,
|
|
test_dhcp_hangcheck, NULL) >= 0);
|
|
|
|
res = sd_dhcp_client_start(client);
|
|
assert_se(res == 0 || res == -EINPROGRESS);
|
|
|
|
sd_event_loop(e);
|
|
|
|
test_hangcheck = sd_event_source_unref(test_hangcheck);
|
|
|
|
sd_dhcp_client_set_callback(client, NULL, NULL);
|
|
sd_dhcp_client_stop(client);
|
|
sd_dhcp_client_free(client);
|
|
|
|
test_fd[1] = safe_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;
|
|
}
|