1 /* 2 * Bootstrap Protocol (BOOTP). RFC951 and RFC1048. 3 * 4 * This file specifies the "implementation-independent" BOOTP protocol 5 * information which is common to both client and server. 6 * 7 * Copyright 1988 by Carnegie Mellon. 8 * 9 * Permission to use, copy, modify, and distribute this program for any 10 * purpose and without fee is hereby granted, provided that this copyright 11 * and permission notice appear on all copies and supporting documentation, 12 * the name of Carnegie Mellon not be used in advertising or publicity 13 * pertaining to distribution of the program without specific prior 14 * permission, and notice be given in supporting documentation that copying 15 * and distribution is by permission of Carnegie Mellon and Stanford 16 * University. Carnegie Mellon makes no representations about the 17 * suitability of this software for any purpose. It is provided "as is" 18 * without express or implied warranty. 19 */ 20 21 #ifndef _BOOTP_H_ 22 #define _BOOTP_H_ 23 24 #include <netinet/in.h> 25 26 struct bootp { 27 unsigned char bp_op; /* packet opcode type */ 28 unsigned char bp_htype; /* hardware addr type */ 29 unsigned char bp_hlen; /* hardware addr length */ 30 unsigned char bp_hops; /* gateway hops */ 31 unsigned int bp_xid; /* transaction ID */ 32 unsigned short bp_secs; /* seconds since boot began */ 33 unsigned short bp_flags; 34 struct in_addr bp_ciaddr; /* client IP address */ 35 struct in_addr bp_yiaddr; /* 'your' IP address */ 36 struct in_addr bp_siaddr; /* server IP address */ 37 struct in_addr bp_giaddr; /* gateway IP address */ 38 unsigned char bp_chaddr[16]; /* client hardware address */ 39 unsigned char bp_sname[64]; /* server host name */ 40 char bp_file[128]; /* boot file name */ 41 #ifdef SUPPORT_DHCP 42 #define BOOTP_VENDSIZE 312 43 #else 44 #define BOOTP_VENDSIZE 64 45 #endif 46 unsigned char bp_vend[BOOTP_VENDSIZE]; /* vendor-specific area */ 47 }; 48 49 /* 50 * UDP port numbers, server and client. 51 */ 52 #define IPPORT_BOOTPS 67 53 #define IPPORT_BOOTPC 68 54 55 #define BOOTREPLY 2 56 #define BOOTREQUEST 1 57 58 59 /* 60 * Vendor magic cookie (v_magic) for CMU 61 */ 62 #define VM_CMU "CMU" 63 64 /* 65 * Vendor magic cookie (v_magic) for RFC1048 66 */ 67 #define VM_RFC1048 { 99, 130, 83, 99 } 68 69 /* 70 * RFC1048 tag values used to specify what information is being supplied in 71 * the vendor field of the packet. 72 */ 73 74 #define TAG_PAD ((unsigned char) 0) 75 #define TAG_SUBNET_MASK ((unsigned char) 1) 76 #define TAG_TIME_OFFSET ((unsigned char) 2) 77 #define TAG_GATEWAY ((unsigned char) 3) 78 #define TAG_TIME_SERVER ((unsigned char) 4) 79 #define TAG_NAME_SERVER ((unsigned char) 5) 80 #define TAG_DOMAIN_SERVER ((unsigned char) 6) 81 #define TAG_LOG_SERVER ((unsigned char) 7) 82 #define TAG_COOKIE_SERVER ((unsigned char) 8) 83 #define TAG_LPR_SERVER ((unsigned char) 9) 84 #define TAG_IMPRESS_SERVER ((unsigned char) 10) 85 #define TAG_RLP_SERVER ((unsigned char) 11) 86 #define TAG_HOSTNAME ((unsigned char) 12) 87 #define TAG_BOOTSIZE ((unsigned char) 13) 88 #define TAG_DUMPFILE ((unsigned char) 14) 89 #define TAG_DOMAINNAME ((unsigned char) 15) 90 #define TAG_SWAPSERVER ((unsigned char) 16) 91 #define TAG_ROOTPATH ((unsigned char) 17) 92 #define TAG_INTF_MTU ((unsigned char) 26) 93 94 #ifdef SUPPORT_DHCP 95 #define TAG_REQ_ADDR ((unsigned char) 50) 96 #define TAG_LEASETIME ((unsigned char) 51) 97 #define TAG_OVERLOAD ((unsigned char) 52) 98 #define TAG_DHCP_MSGTYPE ((unsigned char) 53) 99 #define TAG_SERVERID ((unsigned char) 54) 100 #define TAG_PARAM_REQ ((unsigned char) 55) 101 #define TAG_MSG ((unsigned char) 56) 102 #define TAG_MAXSIZE ((unsigned char) 57) 103 #define TAG_T1 ((unsigned char) 58) 104 #define TAG_T2 ((unsigned char) 59) 105 #define TAG_CLASSID ((unsigned char) 60) 106 #define TAG_CLIENTID ((unsigned char) 61) 107 #define TAG_USER_CLASS ((unsigned char) 77) 108 #endif 109 110 #define TAG_END ((unsigned char) 255) 111 112 #ifdef SUPPORT_DHCP 113 #define DHCPDISCOVER 1 114 #define DHCPOFFER 2 115 #define DHCPREQUEST 3 116 #define DHCPDECLINE 4 117 #define DHCPACK 5 118 #define DHCPNAK 6 119 #define DHCPRELEASE 7 120 #endif 121 122 /* 123 * "vendor" data permitted for CMU bootp clients. 124 */ 125 126 struct cmu_vend { 127 unsigned char v_magic[4]; /* magic number */ 128 unsigned int v_flags; /* flags/opcodes, etc. */ 129 struct in_addr v_smask; /* Subnet mask */ 130 struct in_addr v_dgate; /* Default gateway */ 131 struct in_addr v_dns1, v_dns2; /* Domain name servers */ 132 struct in_addr v_ins1, v_ins2; /* IEN-116 name servers */ 133 struct in_addr v_ts1, v_ts2; /* Time servers */ 134 unsigned char v_unused[25]; /* currently unused */ 135 }; 136 137 138 /* v_flags values */ 139 #define VF_SMASK 1 /* Subnet mask field contains valid data */ 140 141 /* cached bootp response/dhcp ack */ 142 extern struct bootp *bootp_response; 143 extern size_t bootp_response_size; 144 145 #endif /* _BOOTP_H_ */ 146