2013-12-09 22:43:09 +01:00
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/*-*- 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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2013-12-09 22:43:16 +01:00
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#include <stdio.h>
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2013-12-09 22:43:09 +01:00
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2013-12-09 22:43:21 +01:00
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#include "util.h"
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2013-12-09 22:43:09 +01:00
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#include "dhcp-protocol.h"
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2013-12-09 22:43:21 +01:00
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#include "dhcp-internal.h"
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2013-12-09 22:43:09 +01:00
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#include "sd-dhcp-client.h"
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2013-12-09 22:43:21 +01:00
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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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2013-12-09 22:43:09 +01:00
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static void test_request_basic(void)
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{
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sd_dhcp_client *client;
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client = sd_dhcp_client_new();
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assert(client);
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assert(sd_dhcp_client_set_request_option(NULL, 0) == -EINVAL);
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assert(sd_dhcp_client_set_request_address(NULL, NULL) == -EINVAL);
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assert(sd_dhcp_client_set_index(NULL, 0) == -EINVAL);
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assert(sd_dhcp_client_set_index(client, 15) == 0);
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assert(sd_dhcp_client_set_index(client, -42) == -EINVAL);
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assert(sd_dhcp_client_set_index(client, -1) == 0);
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assert(sd_dhcp_client_set_request_option(client,
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DHCP_OPTION_SUBNET_MASK) == -EEXIST);
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assert(sd_dhcp_client_set_request_option(client,
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DHCP_OPTION_ROUTER) == -EEXIST);
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assert(sd_dhcp_client_set_request_option(client,
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DHCP_OPTION_HOST_NAME) == -EEXIST);
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assert(sd_dhcp_client_set_request_option(client,
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DHCP_OPTION_DOMAIN_NAME) == -EEXIST);
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assert(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(sd_dhcp_client_set_request_option(client,
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DHCP_OPTION_NTP_SERVER) == -EEXIST);
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assert(sd_dhcp_client_set_request_option(client,
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DHCP_OPTION_PAD) == -EINVAL);
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assert(sd_dhcp_client_set_request_option(client,
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DHCP_OPTION_END) == -EINVAL);
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assert(sd_dhcp_client_set_request_option(client,
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DHCP_OPTION_MESSAGE_TYPE) == -EINVAL);
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assert(sd_dhcp_client_set_request_option(client,
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DHCP_OPTION_OVERLOAD) == -EINVAL);
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assert(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(sd_dhcp_client_set_request_option(client, 33) == 0);
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assert(sd_dhcp_client_set_request_option(client, 33) == -EEXIST);
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assert(sd_dhcp_client_set_request_option(client, 44) == 0);
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}
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2013-12-09 22:43:16 +01:00
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static uint16_t client_checksum(void *buf, int len)
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{
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uint32_t sum;
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uint16_t *check;
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int i;
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uint8_t *odd;
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sum = 0;
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check = buf;
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for (i = 0; i < len / 2 ; i++)
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sum += check[i];
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if (len & 0x01) {
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odd = buf;
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sum += odd[len];
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}
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return ~((sum & 0xffff) + (sum >> 16));
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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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uint8_t check[2] = {
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0x78, 0xae
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};
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uint16_t *val = (uint16_t *)check;
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assert(client_checksum(&buf, 20) == *val);
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}
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2013-12-09 22:43:21 +01:00
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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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return 0;
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}
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int dhcp_network_send_raw_packet(int index, 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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int res;
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assert(index == 42);
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assert(packet);
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size = sizeof(DHCPPacket) + 4;
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assert(len > size);
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discover = memdup(packet, len);
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assert(memcmp(discover->dhcp.chaddr,
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&mac_addr.ether_addr_octet, 6) == 0);
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assert(discover->ip.ttl == IPDEFTTL);
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assert(discover->ip.protocol == IPPROTO_UDP);
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assert(discover->ip.saddr == INADDR_ANY);
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assert(discover->ip.daddr == INADDR_BROADCAST);
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assert(discover->udp.source == ntohs(DHCP_PORT_CLIENT));
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assert(discover->udp.dest == ntohs(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 = ~client_checksum(&discover->ip.ttl, len - 8);
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assert(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 = ~client_checksum(&discover->ip, sizeof(discover->ip));
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assert(ip_check == 0xffff);
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size = len - sizeof(struct iphdr) - sizeof(struct udphdr);
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res = dhcp_option_parse(&discover->dhcp, size, check_options, NULL);
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if (res < 0)
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return res;
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return 575;
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}
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static void test_discover_message(void)
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{
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sd_dhcp_client *client;
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int res;
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client = sd_dhcp_client_new();
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assert(client);
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assert(sd_dhcp_client_set_index(client, 42) >= 0);
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assert(sd_dhcp_client_set_mac(client, &mac_addr) >= 0);
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assert(sd_dhcp_client_set_request_option(client, 248) >= 0);
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res = sd_dhcp_client_start(client);
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assert(res == 0 || res == -EINPROGRESS);
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}
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2013-12-09 22:43:09 +01:00
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int main(int argc, char *argv[])
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{
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test_request_basic();
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2013-12-09 22:43:16 +01:00
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test_checksum();
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2013-12-09 22:43:09 +01:00
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2013-12-09 22:43:21 +01:00
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test_discover_message();
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2013-12-09 22:43:09 +01:00
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return 0;
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}
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