/* @(#) $Header: /tcpdump/master/tcpdump/bootp.h,v 1.8 1999/10/17 23:35:46 mcr 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 { unsigned char bp_op; /* packet opcode type */ unsigned char bp_htype; /* hardware addr type */ unsigned char bp_hlen; /* hardware addr length */ unsigned char bp_hops; /* gateway hops */ u_int32_t bp_xid; /* transaction ID */ unsigned short bp_secs; /* seconds since boot began */ unsigned short 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 */ unsigned char bp_chaddr[16]; /* client hardware address */ unsigned char bp_sname[64]; /* server host name */ unsigned char bp_file[128]; /* boot file name */ unsigned char 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 ((unsigned char) 0) #define TAG_SUBNET_MASK ((unsigned char) 1) #define TAG_TIME_OFFSET ((unsigned char) 2) #define TAG_GATEWAY ((unsigned char) 3) #define TAG_TIME_SERVER ((unsigned char) 4) #define TAG_NAME_SERVER ((unsigned char) 5) #define TAG_DOMAIN_SERVER ((unsigned char) 6) #define TAG_LOG_SERVER ((unsigned char) 7) #define TAG_COOKIE_SERVER ((unsigned char) 8) #define TAG_LPR_SERVER ((unsigned char) 9) #define TAG_IMPRESS_SERVER ((unsigned char) 10) #define TAG_RLP_SERVER ((unsigned char) 11) #define TAG_HOSTNAME ((unsigned char) 12) #define TAG_BOOTSIZE ((unsigned char) 13) #define TAG_END ((unsigned char) 255) /* RFC1497 tags */ #define TAG_DUMPPATH ((unsigned char) 14) #define TAG_DOMAINNAME ((unsigned char) 15) #define TAG_SWAP_SERVER ((unsigned char) 16) #define TAG_ROOTPATH ((unsigned char) 17) #define TAG_EXTPATH ((unsigned char) 18) /* RFC2132 */ #define TAG_IP_FORWARD ((unsigned char) 19) #define TAG_NL_SRCRT ((unsigned char) 20) #define TAG_PFILTERS ((unsigned char) 21) #define TAG_REASS_SIZE ((unsigned char) 22) #define TAG_DEF_TTL ((unsigned char) 23) #define TAG_MTU_TIMEOUT ((unsigned char) 24) #define TAG_MTU_TABLE ((unsigned char) 25) #define TAG_INT_MTU ((unsigned char) 26) #define TAG_LOCAL_SUBNETS ((unsigned char) 27) #define TAG_BROAD_ADDR ((unsigned char) 28) #define TAG_DO_MASK_DISC ((unsigned char) 29) #define TAG_SUPPLY_MASK ((unsigned char) 30) #define TAG_DO_RDISC ((unsigned char) 31) #define TAG_RTR_SOL_ADDR ((unsigned char) 32) #define TAG_STATIC_ROUTE ((unsigned char) 33) #define TAG_USE_TRAILERS ((unsigned char) 34) #define TAG_ARP_TIMEOUT ((unsigned char) 35) #define TAG_ETH_ENCAP ((unsigned char) 36) #define TAG_TCP_TTL ((unsigned char) 37) #define TAG_TCP_KEEPALIVE ((unsigned char) 38) #define TAG_KEEPALIVE_GO ((unsigned char) 39) #define TAG_NIS_DOMAIN ((unsigned char) 40) #define TAG_NIS_SERVERS ((unsigned char) 41) #define TAG_NTP_SERVERS ((unsigned char) 42) #define TAG_VENDOR_OPTS ((unsigned char) 43) #define TAG_NETBIOS_NS ((unsigned char) 44) #define TAG_NETBIOS_DDS ((unsigned char) 45) #define TAG_NETBIOS_NODE ((unsigned char) 46) #define TAG_NETBIOS_SCOPE ((unsigned char) 47) #define TAG_XWIN_FS ((unsigned char) 48) #define TAG_XWIN_DM ((unsigned char) 49) #define TAG_NIS_P_DOMAIN ((unsigned char) 64) #define TAG_NIS_P_SERVERS ((unsigned char) 65) #define TAG_MOBILE_HOME ((unsigned char) 68) #define TAG_SMPT_SERVER ((unsigned char) 69) #define TAG_POP3_SERVER ((unsigned char) 70) #define TAG_NNTP_SERVER ((unsigned char) 71) #define TAG_WWW_SERVER ((unsigned char) 72) #define TAG_FINGER_SERVER ((unsigned char) 73) #define TAG_IRC_SERVER ((unsigned char) 74) #define TAG_STREETTALK_SRVR ((unsigned char) 75) #define TAG_STREETTALK_STDA ((unsigned char) 76) /* DHCP options */ #define TAG_REQUESTED_IP ((unsigned char) 50) #define TAG_IP_LEASE ((unsigned char) 51) #define TAG_OPT_OVERLOAD ((unsigned char) 52) #define TAG_TFTP_SERVER ((unsigned char) 66) #define TAG_BOOTFILENAME ((unsigned char) 67) #define TAG_DHCP_MESSAGE ((unsigned char) 53) #define TAG_SERVER_ID ((unsigned char) 54) #define TAG_PARM_REQUEST ((unsigned char) 55) #define TAG_MESSAGE ((unsigned char) 56) #define TAG_MAX_MSG_SIZE ((unsigned char) 57) #define TAG_RENEWAL_TIME ((unsigned char) 58) #define TAG_REBIND_TIME ((unsigned char) 59) #define TAG_VENDOR_CLASS ((unsigned char) 60) #define TAG_CLIENT_ID ((unsigned char) 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 { unsigned char 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 */ unsigned char v_unused[24]; /* currently unused */ }; /* v_flags values */ #define VF_SMASK 1 /* Subnet mask field contains valid data */