/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ #pragma once /*** This file is part of systemd. Copyright (C) 2013 Intel Corporation. All rights reserved. Copyright (C) 2014 Tom Gundersen 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 <stdint.h> #include <linux/if_packet.h> #include <net/if_arp.h> #include <net/ethernet.h> #include "socket-util.h" #include "sd-dhcp-client.h" #include "dhcp-protocol.h" int dhcp_network_bind_raw_socket(int index, union sockaddr_union *link, uint32_t xid, const uint8_t *mac_addr, size_t mac_addr_len, uint16_t arp_type); int dhcp_network_bind_udp_socket(be32_t address, uint16_t port); int dhcp_network_send_raw_socket(int s, const union sockaddr_union *link, const void *packet, size_t len); int dhcp_network_send_udp_socket(int s, be32_t address, uint16_t port, const void *packet, size_t len); int dhcp_option_append(DHCPMessage *message, size_t size, size_t *offset, uint8_t overload, uint8_t code, size_t optlen, const void *optval); typedef int (*dhcp_option_cb_t)(uint8_t code, uint8_t len, const uint8_t *option, void *user_data); int dhcp_option_parse(DHCPMessage *message, size_t len, dhcp_option_cb_t cb, void *user_data); int dhcp_message_init(DHCPMessage *message, uint8_t op, uint32_t xid, uint8_t type, uint16_t arp_type, size_t optlen, size_t *optoffset); uint16_t dhcp_packet_checksum(uint8_t *buf, size_t len); void dhcp_packet_append_ip_headers(DHCPPacket *packet, be32_t source_addr, uint16_t source, be32_t destination_addr, uint16_t destination, uint16_t len); int dhcp_packet_verify_headers(DHCPPacket *packet, size_t len, bool checksum); DEFINE_TRIVIAL_CLEANUP_FUNC(sd_dhcp_client*, sd_dhcp_client_unref); #define _cleanup_dhcp_client_unref_ _cleanup_(sd_dhcp_client_unrefp) /* If we are invoking callbacks of a dhcp-client, ensure unreffing the * client from the callback doesn't destroy the object we are working * on */ #define DHCP_CLIENT_DONT_DESTROY(client) \ _cleanup_dhcp_client_unref_ _unused_ sd_dhcp_client *_dont_destroy_##client = sd_dhcp_client_ref(client) #define log_dhcp_client(client, fmt, ...) log_internal(LOG_DEBUG, 0, __FILE__, __LINE__, __func__, "DHCP CLIENT (0x%x): " fmt, client->xid, ##__VA_ARGS__)