| | 1 | /* |
| | 2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 6 | * This file contains Original Code and/or Modifications of Original Code |
| | 7 | * as defined in and that are subject to the Apple Public Source License |
| | 8 | * Version 2.0 (the 'License'). You may not use this file except in |
| | 9 | * compliance with the License. The rights granted to you under the License |
| | 10 | * may not be used to create, or enable the creation or redistribution of, |
| | 11 | * unlawful or unlicensed copies of an Apple operating system, or to |
| | 12 | * circumvent, violate, or enable the circumvention or violation of, any |
| | 13 | * terms of an Apple operating system software license agreement. |
| | 14 | * |
| | 15 | * Please obtain a copy of the License at |
| | 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
| | 17 | * |
| | 18 | * The Original Code and all software distributed under the License are |
| | 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| | 23 | * Please see the License for the specific language governing rights and |
| | 24 | * limitations under the License. |
| | 25 | * |
| | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| | 27 | */ |
| | 28 | /* |
| | 29 | * Bootstrap Protocol (BOOTP). RFC 951. |
| | 30 | */ |
| | 31 | /* |
| | 32 | * HISTORY |
| | 33 | * |
| | 34 | * 14 May 1992 ? at NeXT |
| | 35 | * Added correct padding to struct nextvend. This is |
| | 36 | * needed for the i386 due to alignment differences wrt |
| | 37 | * the m68k. Also adjusted the size of the array fields |
| | 38 | * because the NeXT vendor area was overflowing the bootp |
| | 39 | * packet. |
| | 40 | */ |
| | 41 | |
| | 42 | #include <netinet/udp.h> |
| | 43 | |
| | 44 | #define iaddr_t struct in_addr |
| | 45 | |
| | 46 | struct bootp { |
| | 47 | u_char bp_op; /* packet opcode type */ |
| | 48 | #define BOOTREQUEST 1 |
| | 49 | #define BOOTREPLY 2 |
| | 50 | u_char bp_htype; /* hardware addr type */ |
| | 51 | u_char bp_hlen; /* hardware addr length */ |
| | 52 | u_char bp_hops; /* gateway hops */ |
| | 53 | u_int32_t bp_xid; /* transaction ID */ |
| | 54 | u_short bp_secs; /* seconds since boot began */ |
| | 55 | u_short bp_unused; |
| | 56 | iaddr_t bp_ciaddr; /* client IP address */ |
| | 57 | iaddr_t bp_yiaddr; /* 'your' IP address */ |
| | 58 | iaddr_t bp_siaddr; /* server IP address */ |
| | 59 | iaddr_t bp_giaddr; /* gateway IP address */ |
| | 60 | u_char bp_chaddr[16]; /* client hardware address */ |
| | 61 | u_char bp_sname[64]; /* server host name */ |
| | 62 | u_char bp_file[128]; /* boot file name */ |
| | 63 | u_char bp_vend[64]; /* vendor-specific area */ |
| | 64 | }; |
| | 65 | |
| | 66 | /* |
| | 67 | * UDP port numbers, server and client. |
| | 68 | */ |
| | 69 | #define IPPORT_BOOTPS 67 |
| | 70 | #define IPPORT_BOOTPC 68 |
| | 71 | |
| | 72 | /* |
| | 73 | * "vendor" data permitted for Stanford boot clients. |
| | 74 | */ |
| | 75 | struct vend { |
| | 76 | u_char v_magic[4]; /* magic number */ |
| | 77 | u_int32_t v_flags; /* flags/opcodes, etc. */ |
| | 78 | u_char v_unused[56]; /* currently unused */ |
| | 79 | }; |
| | 80 | #define VM_STANFORD "STAN" /* v_magic for Stanford */ |
| | 81 | |
| | 82 | /* v_flags values */ |
| | 83 | #define VF_PCBOOT 1 /* an IBMPC or Mac wants environment info */ |
| | 84 | #define VF_HELP 2 /* help me, I'm not registered */ |
| | 85 | |
| | 86 | #define NVMAXTEXT 55 /* don't change this, it just fits RFC951 */ |
| | 87 | struct nextvend { |
| | 88 | u_char nv_magic[4]; /* Magic number for vendor specificity */ |
| | 89 | u_char nv_version; /* NeXT protocol version */ |
| | 90 | /* |
| | 91 | * Round the beginning |
| | 92 | * of the union to a 16 |
| | 93 | * bit boundary due to |
| | 94 | * struct/union alignment |
| | 95 | * on the m68k. |
| | 96 | */ |
| | 97 | unsigned short :0; |
| | 98 | union { |
| | 99 | u_char NV0[58]; |
| | 100 | struct { |
| | 101 | u_char NV1_opcode; /* opcode - Version 1 */ |
| | 102 | u_char NV1_xid; /* transcation id */ |
| | 103 | u_char NV1_text[NVMAXTEXT]; /* text */ |
| | 104 | u_char NV1_null; /* null terminator */ |
| | 105 | } NV1; |
| | 106 | } nv_U; |
| | 107 | }; |
| | 108 | #define nv_unused nv_U.NV0 |
| | 109 | #define nv_opcode nv_U.NV1.NV1_opcode |
| | 110 | #define nv_xid nv_U.NV1.NV1_xid |
| | 111 | #define nv_text nv_U.NV1.NV1_text |
| | 112 | #define nv_null nv_U.NV1.NV1_null |
| | 113 | |
| | 114 | /* Magic number */ |
| | 115 | #define VM_NEXT "NeXT" /* v_magic for NeXT, Inc. */ |
| | 116 | |
| | 117 | /* Opcodes */ |
| | 118 | #define BPOP_OK 0 |
| | 119 | #define BPOP_QUERY 1 |
| | 120 | #define BPOP_QUERY_NE 2 |
| | 121 | #define BPOP_ERROR 3 |
| | 122 | |
| | 123 | struct bootp_packet { |
| | 124 | struct ip bp_ip; |
| | 125 | struct udphdr bp_udp; |
| | 126 | struct bootp bp_bootp; |
| | 127 | }; |
| | 128 | |
| | 129 | #define BOOTP_PKTSIZE (sizeof (struct bootp_packet)) |
| | 130 | |
| | 131 | /* backoffs must be masks */ |
| | 132 | #define BOOTP_MIN_BACKOFF 0x7ff /* 2.048 sec */ |
| | 133 | #define BOOTP_MAX_BACKOFF 0xffff /* 65.535 sec */ |
| | 134 | #define BOOTP_RETRY 6 /* # retries */ |
| | 135 | |
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