/* @(#) $Header: /tcpdump/master/tcpdump/bootp.h,v 1.9 2000-10-03 02:54:54 itojun Exp $ (LBL) */ /* * Bootstrap Protocol (BOOTP). RFC951 and RFC1048. * * This file specifies the "implementation-independent" BOOTP protocol * information which is common to both client and server. * * Copyright 1988 by Carnegie Mellon. * * Permission to use, copy, modify, and distribute this program for any * purpose and without fee is hereby granted, provided that this copyright * and permission notice appear on all copies and supporting documentation, * the name of Carnegie Mellon not be used in advertising or publicity * pertaining to distribution of the program without specific prior * permission, and notice be given in supporting documentation that copying * and distribution is by permission of Carnegie Mellon and Stanford * University. Carnegie Mellon makes no representations about the * suitability of this software for any purpose. It is provided "as is" * without express or implied warranty. */ struct bootp { u_int8_t bp_op; /* packet opcode type */ u_int8_t bp_htype; /* hardware addr type */ u_int8_t bp_hlen; /* hardware addr length */ u_int8_t bp_hops; /* gateway hops */ u_int32_t bp_xid; /* transaction ID */ u_int16_t bp_secs; /* seconds since boot began */ u_int16_t bp_flags; /* flags: 0x8000 is broadcast */ struct in_addr bp_ciaddr; /* client IP address */ struct in_addr bp_yiaddr; /* 'your' IP address */ struct in_addr bp_siaddr; /* server IP address */ struct in_addr bp_giaddr; /* gateway IP address */ u_int8_t bp_chaddr[16]; /* client hardware address */ u_int8_t bp_sname[64]; /* server host name */ u_int8_t bp_file[128]; /* boot file name */ u_int8_t bp_vend[64]; /* vendor-specific area */ }; /* * UDP port numbers, server and client. */ #define IPPORT_BOOTPS 67 #define IPPORT_BOOTPC 68 #define BOOTREPLY 2 #define BOOTREQUEST 1 /* * Vendor magic cookie (v_magic) for CMU */ #define VM_CMU "CMU" /* * Vendor magic cookie (v_magic) for RFC1048 */ #define VM_RFC1048 { 99, 130, 83, 99 } /* * RFC1048 tag values used to specify what information is being supplied in * the vendor field of the packet. */ #define TAG_PAD ((u_int8_t) 0) #define TAG_SUBNET_MASK ((u_int8_t) 1) #define TAG_TIME_OFFSET ((u_int8_t) 2) #define TAG_GATEWAY ((u_int8_t) 3) #define TAG_TIME_SERVER ((u_int8_t) 4) #define TAG_NAME_SERVER ((u_int8_t) 5) #define TAG_DOMAIN_SERVER ((u_int8_t) 6) #define TAG_LOG_SERVER ((u_int8_t) 7) #define TAG_COOKIE_SERVER ((u_int8_t) 8) #define TAG_LPR_SERVER ((u_int8_t) 9) #define TAG_IMPRESS_SERVER ((u_int8_t) 10) #define TAG_RLP_SERVER ((u_int8_t) 11) #define TAG_HOSTNAME ((u_int8_t) 12) #define TAG_BOOTSIZE ((u_int8_t) 13) #define TAG_END ((u_int8_t) 255) /* RFC1497 tags */ #define TAG_DUMPPATH ((u_int8_t) 14) #define TAG_DOMAINNAME ((u_int8_t) 15) #define TAG_SWAP_SERVER ((u_int8_t) 16) #define TAG_ROOTPATH ((u_int8_t) 17) #define TAG_EXTPATH ((u_int8_t) 18) /* RFC2132 */ #define TAG_IP_FORWARD ((u_int8_t) 19) #define TAG_NL_SRCRT ((u_int8_t) 20) #define TAG_PFILTERS ((u_int8_t) 21) #define TAG_REASS_SIZE ((u_int8_t) 22) #define TAG_DEF_TTL ((u_int8_t) 23) #define TAG_MTU_TIMEOUT ((u_int8_t) 24) #define TAG_MTU_TABLE ((u_int8_t) 25) #define TAG_INT_MTU ((u_int8_t) 26) #define TAG_LOCAL_SUBNETS ((u_int8_t) 27) #define TAG_BROAD_ADDR ((u_int8_t) 28) #define TAG_DO_MASK_DISC ((u_int8_t) 29) #define TAG_SUPPLY_MASK ((u_int8_t) 30) #define TAG_DO_RDISC ((u_int8_t) 31) #define TAG_RTR_SOL_ADDR ((u_int8_t) 32) #define TAG_STATIC_ROUTE ((u_int8_t) 33) #define TAG_USE_TRAILERS ((u_int8_t) 34) #define TAG_ARP_TIMEOUT ((u_int8_t) 35) #define TAG_ETH_ENCAP ((u_int8_t) 36) #define TAG_TCP_TTL ((u_int8_t) 37) #define TAG_TCP_KEEPALIVE ((u_int8_t) 38) #define TAG_KEEPALIVE_GO ((u_int8_t) 39) #define TAG_NIS_DOMAIN ((u_int8_t) 40) #define TAG_NIS_SERVERS ((u_int8_t) 41) #define TAG_NTP_SERVERS ((u_int8_t) 42) #define TAG_VENDOR_OPTS ((u_int8_t) 43) #define TAG_NETBIOS_NS ((u_int8_t) 44) #define TAG_NETBIOS_DDS ((u_int8_t) 45) #define TAG_NETBIOS_NODE ((u_int8_t) 46) #define TAG_NETBIOS_SCOPE ((u_int8_t) 47) #define TAG_XWIN_FS ((u_int8_t) 48) #define TAG_XWIN_DM ((u_int8_t) 49) #define TAG_NIS_P_DOMAIN ((u_int8_t) 64) #define TAG_NIS_P_SERVERS ((u_int8_t) 65) #define TAG_MOBILE_HOME ((u_int8_t) 68) #define TAG_SMPT_SERVER ((u_int8_t) 69) #define TAG_POP3_SERVER ((u_int8_t) 70) #define TAG_NNTP_SERVER ((u_int8_t) 71) #define TAG_WWW_SERVER ((u_int8_t) 72) #define TAG_FINGER_SERVER ((u_int8_t) 73) #define TAG_IRC_SERVER ((u_int8_t) 74) #define TAG_STREETTALK_SRVR ((u_int8_t) 75) #define TAG_STREETTALK_STDA ((u_int8_t) 76) /* DHCP options */ #define TAG_REQUESTED_IP ((u_int8_t) 50) #define TAG_IP_LEASE ((u_int8_t) 51) #define TAG_OPT_OVERLOAD ((u_int8_t) 52) #define TAG_TFTP_SERVER ((u_int8_t) 66) #define TAG_BOOTFILENAME ((u_int8_t) 67) #define TAG_DHCP_MESSAGE ((u_int8_t) 53) #define TAG_SERVER_ID ((u_int8_t) 54) #define TAG_PARM_REQUEST ((u_int8_t) 55) #define TAG_MESSAGE ((u_int8_t) 56) #define TAG_MAX_MSG_SIZE ((u_int8_t) 57) #define TAG_RENEWAL_TIME ((u_int8_t) 58) #define TAG_REBIND_TIME ((u_int8_t) 59) #define TAG_VENDOR_CLASS ((u_int8_t) 60) #define TAG_CLIENT_ID ((u_int8_t) 61) /* DHCP Message types (values for TAG_DHCP_MESSAGE option) */ #define DHCPDISCOVER 1 #define DHCPOFFER 2 #define DHCPREQUEST 3 #define DHCPDECLINE 4 #define DHCPACK 5 #define DHCPNAK 6 #define DHCPRELEASE 7 #define DHCPINFORM 8 /* * "vendor" data permitted for CMU bootp clients. */ struct cmu_vend { u_int8_t v_magic[4]; /* magic number */ u_int32_t v_flags; /* flags/opcodes, etc. */ struct in_addr v_smask; /* Subnet mask */ struct in_addr v_dgate; /* Default gateway */ struct in_addr v_dns1, v_dns2; /* Domain name servers */ struct in_addr v_ins1, v_ins2; /* IEN-116 name servers */ struct in_addr v_ts1, v_ts2; /* Time servers */ u_int8_t v_unused[24]; /* currently unused */ }; /* v_flags values */ #define VF_SMASK 1 /* Subnet mask field contains valid data */