1 2#ifndef _NETINET_DHCP_H 3#define _NETINET_DHCP_H 4#include <sys/appleapiopts.h> 5 6/* 7 * Copyright (c) 1999-2007 Apple Inc. All rights reserved. 8 * 9 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 10 * 11 * This file contains Original Code and/or Modifications of Original Code 12 * as defined in and that are subject to the Apple Public Source License 13 * Version 2.0 (the 'License'). You may not use this file except in 14 * compliance with the License. The rights granted to you under the License 15 * may not be used to create, or enable the creation or redistribution of, 16 * unlawful or unlicensed copies of an Apple operating system, or to 17 * circumvent, violate, or enable the circumvention or violation of, any 18 * terms of an Apple operating system software license agreement. 19 * 20 * Please obtain a copy of the License at 21 * http://www.opensource.apple.com/apsl/ and read it before using this file. 22 * 23 * The Original Code and all software distributed under the License are 24 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 25 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 26 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 27 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 28 * Please see the License for the specific language governing rights and 29 * limitations under the License. 30 * 31 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 32 */ 33/* 34 * dhcp.h 35 * - definitions for DHCP (as specified in RFC2132) 36 */ 37#include <sys/types.h> 38#include <netinet/in.h> 39#include <netinet/in_systm.h> 40#include <netinet/ip.h> 41#include <netinet/udp.h> 42 43struct dhcp { 44 u_char dp_op; /* packet opcode type */ 45 u_char dp_htype; /* hardware addr type */ 46 u_char dp_hlen; /* hardware addr length */ 47 u_char dp_hops; /* gateway hops */ 48 u_int32_t dp_xid; /* transaction ID */ 49 u_int16_t dp_secs; /* seconds since boot began */ 50 u_int16_t dp_flags; /* flags */ 51 struct in_addr dp_ciaddr; /* client IP address */ 52 struct in_addr dp_yiaddr; /* 'your' IP address */ 53 struct in_addr dp_siaddr; /* server IP address */ 54 struct in_addr dp_giaddr; /* gateway IP address */ 55 u_char dp_chaddr[16]; /* client hardware address */ 56 u_char dp_sname[64]; /* server host name */ 57 u_char dp_file[128]; /* boot file name */ 58 u_char dp_options[0]; /* variable-length options field */ 59}; 60 61struct dhcp_packet { 62 struct ip ip; 63 struct udphdr udp; 64 struct dhcp dhcp; 65}; 66 67#define DHCP_OPTIONS_MIN 312 68#define DHCP_PACKET_MIN (sizeof(struct dhcp_packet) + DHCP_OPTIONS_MIN) 69#define DHCP_PAYLOAD_MIN (sizeof(struct dhcp) + DHCP_OPTIONS_MIN) 70 71/* dhcp message types */ 72#define DHCPDISCOVER 1 73#define DHCPOFFER 2 74#define DHCPREQUEST 3 75#define DHCPDECLINE 4 76#define DHCPACK 5 77#define DHCPNAK 6 78#define DHCPRELEASE 7 79#define DHCPINFORM 8 80 81enum { 82 dhcp_msgtype_none_e = 0, 83 dhcp_msgtype_discover_e = DHCPDISCOVER, 84 dhcp_msgtype_offer_e = DHCPOFFER, 85 dhcp_msgtype_request_e = DHCPREQUEST, 86 dhcp_msgtype_decline_e = DHCPDECLINE, 87 dhcp_msgtype_ack_e = DHCPACK, 88 dhcp_msgtype_nak_e = DHCPNAK, 89 dhcp_msgtype_release_e = DHCPRELEASE, 90 dhcp_msgtype_inform_e = DHCPINFORM, 91}; 92 93typedef uint8_t dhcp_msgtype_t; 94 95typedef int32_t dhcp_time_secs_t; /* absolute time */ 96typedef int32_t dhcp_lease_t; /* relative time */ 97#define dhcp_time_hton htonl 98#define dhcp_time_ntoh ntohl 99#define dhcp_lease_hton htonl 100#define dhcp_lease_ntoh ntohl 101 102#define DHCP_INFINITE_LEASE ((dhcp_lease_t)-1) 103#define DHCP_INFINITE_TIME ((dhcp_time_secs_t)-1) 104 105#define DHCP_FLAGS_BROADCAST ((u_short)0x0001) 106 107#endif /* _NETINET_DHCP_H */ 108