1/* @(#) $Header: /tcpdump/master/tcpdump/bootp.h,v 1.19 2008-04-22 09:46:03 hannes Exp $ (LBL) */ 2/* 3 * Bootstrap Protocol (BOOTP). RFC951 and RFC1048. 4 * 5 * This file specifies the "implementation-independent" BOOTP protocol 6 * information which is common to both client and server. 7 * 8 * Copyright 1988 by Carnegie Mellon. 9 * 10 * Permission to use, copy, modify, and distribute this program for any 11 * purpose and without fee is hereby granted, provided that this copyright 12 * and permission notice appear on all copies and supporting documentation, 13 * the name of Carnegie Mellon not be used in advertising or publicity 14 * pertaining to distribution of the program without specific prior 15 * permission, and notice be given in supporting documentation that copying 16 * and distribution is by permission of Carnegie Mellon and Stanford 17 * University. Carnegie Mellon makes no representations about the 18 * suitability of this software for any purpose. It is provided "as is" 19 * without express or implied warranty. 20 */ 21 22 23struct bootp { 24 u_int8_t bp_op; /* packet opcode type */ 25 u_int8_t bp_htype; /* hardware addr type */ 26 u_int8_t bp_hlen; /* hardware addr length */ 27 u_int8_t bp_hops; /* gateway hops */ 28 u_int32_t bp_xid; /* transaction ID */ 29 u_int16_t bp_secs; /* seconds since boot began */ 30 u_int16_t bp_flags; /* flags - see bootp_flag_values[] 31 in print-bootp.c */ 32 struct in_addr bp_ciaddr; /* client IP address */ 33 struct in_addr bp_yiaddr; /* 'your' IP address */ 34 struct in_addr bp_siaddr; /* server IP address */ 35 struct in_addr bp_giaddr; /* gateway IP address */ 36 u_int8_t bp_chaddr[16]; /* client hardware address */ 37 u_int8_t bp_sname[64]; /* server host name */ 38 u_int8_t bp_file[128]; /* boot file name */ 39 u_int8_t bp_vend[64]; /* vendor-specific area */ 40} UNALIGNED; 41 42/* 43 * UDP port numbers, server and client. 44 */ 45#define IPPORT_BOOTPS 67 46#define IPPORT_BOOTPC 68 47 48#define BOOTPREPLY 2 49#define BOOTPREQUEST 1 50 51/* 52 * Vendor magic cookie (v_magic) for CMU 53 */ 54#define VM_CMU "CMU" 55 56/* 57 * Vendor magic cookie (v_magic) for RFC1048 58 */ 59#define VM_RFC1048 { 99, 130, 83, 99 } 60 61 62 63/* 64 * RFC1048 tag values used to specify what information is being supplied in 65 * the vendor field of the packet. 66 */ 67 68#define TAG_PAD ((u_int8_t) 0) 69#define TAG_SUBNET_MASK ((u_int8_t) 1) 70#define TAG_TIME_OFFSET ((u_int8_t) 2) 71#define TAG_GATEWAY ((u_int8_t) 3) 72#define TAG_TIME_SERVER ((u_int8_t) 4) 73#define TAG_NAME_SERVER ((u_int8_t) 5) 74#define TAG_DOMAIN_SERVER ((u_int8_t) 6) 75#define TAG_LOG_SERVER ((u_int8_t) 7) 76#define TAG_COOKIE_SERVER ((u_int8_t) 8) 77#define TAG_LPR_SERVER ((u_int8_t) 9) 78#define TAG_IMPRESS_SERVER ((u_int8_t) 10) 79#define TAG_RLP_SERVER ((u_int8_t) 11) 80#define TAG_HOSTNAME ((u_int8_t) 12) 81#define TAG_BOOTSIZE ((u_int8_t) 13) 82#define TAG_END ((u_int8_t) 255) 83/* RFC1497 tags */ 84#define TAG_DUMPPATH ((u_int8_t) 14) 85#define TAG_DOMAINNAME ((u_int8_t) 15) 86#define TAG_SWAP_SERVER ((u_int8_t) 16) 87#define TAG_ROOTPATH ((u_int8_t) 17) 88#define TAG_EXTPATH ((u_int8_t) 18) 89/* RFC2132 */ 90#define TAG_IP_FORWARD ((u_int8_t) 19) 91#define TAG_NL_SRCRT ((u_int8_t) 20) 92#define TAG_PFILTERS ((u_int8_t) 21) 93#define TAG_REASS_SIZE ((u_int8_t) 22) 94#define TAG_DEF_TTL ((u_int8_t) 23) 95#define TAG_MTU_TIMEOUT ((u_int8_t) 24) 96#define TAG_MTU_TABLE ((u_int8_t) 25) 97#define TAG_INT_MTU ((u_int8_t) 26) 98#define TAG_LOCAL_SUBNETS ((u_int8_t) 27) 99#define TAG_BROAD_ADDR ((u_int8_t) 28) 100#define TAG_DO_MASK_DISC ((u_int8_t) 29) 101#define TAG_SUPPLY_MASK ((u_int8_t) 30) 102#define TAG_DO_RDISC ((u_int8_t) 31) 103#define TAG_RTR_SOL_ADDR ((u_int8_t) 32) 104#define TAG_STATIC_ROUTE ((u_int8_t) 33) 105#define TAG_USE_TRAILERS ((u_int8_t) 34) 106#define TAG_ARP_TIMEOUT ((u_int8_t) 35) 107#define TAG_ETH_ENCAP ((u_int8_t) 36) 108#define TAG_TCP_TTL ((u_int8_t) 37) 109#define TAG_TCP_KEEPALIVE ((u_int8_t) 38) 110#define TAG_KEEPALIVE_GO ((u_int8_t) 39) 111#define TAG_NIS_DOMAIN ((u_int8_t) 40) 112#define TAG_NIS_SERVERS ((u_int8_t) 41) 113#define TAG_NTP_SERVERS ((u_int8_t) 42) 114#define TAG_VENDOR_OPTS ((u_int8_t) 43) 115#define TAG_NETBIOS_NS ((u_int8_t) 44) 116#define TAG_NETBIOS_DDS ((u_int8_t) 45) 117#define TAG_NETBIOS_NODE ((u_int8_t) 46) 118#define TAG_NETBIOS_SCOPE ((u_int8_t) 47) 119#define TAG_XWIN_FS ((u_int8_t) 48) 120#define TAG_XWIN_DM ((u_int8_t) 49) 121#define TAG_NIS_P_DOMAIN ((u_int8_t) 64) 122#define TAG_NIS_P_SERVERS ((u_int8_t) 65) 123#define TAG_MOBILE_HOME ((u_int8_t) 68) 124#define TAG_SMPT_SERVER ((u_int8_t) 69) 125#define TAG_POP3_SERVER ((u_int8_t) 70) 126#define TAG_NNTP_SERVER ((u_int8_t) 71) 127#define TAG_WWW_SERVER ((u_int8_t) 72) 128#define TAG_FINGER_SERVER ((u_int8_t) 73) 129#define TAG_IRC_SERVER ((u_int8_t) 74) 130#define TAG_STREETTALK_SRVR ((u_int8_t) 75) 131#define TAG_STREETTALK_STDA ((u_int8_t) 76) 132/* DHCP options */ 133#define TAG_REQUESTED_IP ((u_int8_t) 50) 134#define TAG_IP_LEASE ((u_int8_t) 51) 135#define TAG_OPT_OVERLOAD ((u_int8_t) 52) 136#define TAG_TFTP_SERVER ((u_int8_t) 66) 137#define TAG_BOOTFILENAME ((u_int8_t) 67) 138#define TAG_DHCP_MESSAGE ((u_int8_t) 53) 139#define TAG_SERVER_ID ((u_int8_t) 54) 140#define TAG_PARM_REQUEST ((u_int8_t) 55) 141#define TAG_MESSAGE ((u_int8_t) 56) 142#define TAG_MAX_MSG_SIZE ((u_int8_t) 57) 143#define TAG_RENEWAL_TIME ((u_int8_t) 58) 144#define TAG_REBIND_TIME ((u_int8_t) 59) 145#define TAG_VENDOR_CLASS ((u_int8_t) 60) 146#define TAG_CLIENT_ID ((u_int8_t) 61) 147/* RFC 2241 */ 148#define TAG_NDS_SERVERS ((u_int8_t) 85) 149#define TAG_NDS_TREE_NAME ((u_int8_t) 86) 150#define TAG_NDS_CONTEXT ((u_int8_t) 87) 151/* RFC 2242 */ 152#define TAG_NDS_IPDOMAIN ((u_int8_t) 62) 153#define TAG_NDS_IPINFO ((u_int8_t) 63) 154/* RFC 2485 */ 155#define TAG_OPEN_GROUP_UAP ((u_int8_t) 98) 156/* RFC 2563 */ 157#define TAG_DISABLE_AUTOCONF ((u_int8_t) 116) 158/* RFC 2610 */ 159#define TAG_SLP_DA ((u_int8_t) 78) 160#define TAG_SLP_SCOPE ((u_int8_t) 79) 161/* RFC 2937 */ 162#define TAG_NS_SEARCH ((u_int8_t) 117) 163/* RFC 3011 */ 164#define TAG_IP4_SUBNET_SELECT ((u_int8_t) 118) 165/* RFC 3442 */ 166#define TAG_CLASSLESS_STATIC_RT ((u_int8_t) 121) 167#define TAG_CLASSLESS_STA_RT_MS ((u_int8_t) 249) 168/* ftp://ftp.isi.edu/.../assignments/bootp-dhcp-extensions */ 169#define TAG_USER_CLASS ((u_int8_t) 77) 170#define TAG_SLP_NAMING_AUTH ((u_int8_t) 80) 171#define TAG_CLIENT_FQDN ((u_int8_t) 81) 172#define TAG_AGENT_CIRCUIT ((u_int8_t) 82) 173#define TAG_AGENT_REMOTE ((u_int8_t) 83) 174#define TAG_AGENT_MASK ((u_int8_t) 84) 175#define TAG_TZ_STRING ((u_int8_t) 88) 176#define TAG_FQDN_OPTION ((u_int8_t) 89) 177#define TAG_AUTH ((u_int8_t) 90) 178#define TAG_VINES_SERVERS ((u_int8_t) 91) 179#define TAG_SERVER_RANK ((u_int8_t) 92) 180#define TAG_CLIENT_ARCH ((u_int8_t) 93) 181#define TAG_CLIENT_NDI ((u_int8_t) 94) 182#define TAG_CLIENT_GUID ((u_int8_t) 97) 183#define TAG_LDAP_URL ((u_int8_t) 95) 184#define TAG_6OVER4 ((u_int8_t) 96) 185#define TAG_PRINTER_NAME ((u_int8_t) 100) 186#define TAG_MDHCP_SERVER ((u_int8_t) 101) 187#define TAG_IPX_COMPAT ((u_int8_t) 110) 188#define TAG_NETINFO_PARENT ((u_int8_t) 112) 189#define TAG_NETINFO_PARENT_TAG ((u_int8_t) 113) 190#define TAG_URL ((u_int8_t) 114) 191#define TAG_FAILOVER ((u_int8_t) 115) 192#define TAG_EXTENDED_REQUEST ((u_int8_t) 126) 193#define TAG_EXTENDED_OPTION ((u_int8_t) 127) 194 195 196/* DHCP Message types (values for TAG_DHCP_MESSAGE option) */ 197#define DHCPDISCOVER 1 198#define DHCPOFFER 2 199#define DHCPREQUEST 3 200#define DHCPDECLINE 4 201#define DHCPACK 5 202#define DHCPNAK 6 203#define DHCPRELEASE 7 204#define DHCPINFORM 8 205 206 207/* 208 * "vendor" data permitted for CMU bootp clients. 209 */ 210 211struct cmu_vend { 212 u_int8_t v_magic[4]; /* magic number */ 213 u_int32_t v_flags; /* flags/opcodes, etc. */ 214 struct in_addr v_smask; /* Subnet mask */ 215 struct in_addr v_dgate; /* Default gateway */ 216 struct in_addr v_dns1, v_dns2; /* Domain name servers */ 217 struct in_addr v_ins1, v_ins2; /* IEN-116 name servers */ 218 struct in_addr v_ts1, v_ts2; /* Time servers */ 219 u_int8_t v_unused[24]; /* currently unused */ 220} UNALIGNED; 221 222 223/* v_flags values */ 224#define VF_SMASK 1 /* Subnet mask field contains valid data */ 225 226/* RFC 4702 DHCP Client FQDN Option */ 227 228#define CLIENT_FQDN_FLAGS_S 0x01 229#define CLIENT_FQDN_FLAGS_O 0x02 230#define CLIENT_FQDN_FLAGS_E 0x04 231#define CLIENT_FQDN_FLAGS_N 0x08 232