1/* @(#) $Header: /tcpdump/master/tcpdump/bootp.h,v 1.15.4.3 2007/08/21 22:02:08 guy 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[] in print-bootp.c */ 31 struct in_addr bp_ciaddr; /* client IP address */ 32 struct in_addr bp_yiaddr; /* 'your' IP address */ 33 struct in_addr bp_siaddr; /* server IP address */ 34 struct in_addr bp_giaddr; /* gateway IP address */ 35 u_int8_t bp_chaddr[16]; /* client hardware address */ 36 u_int8_t bp_sname[64]; /* server host name */ 37 u_int8_t bp_file[128]; /* boot file name */ 38 u_int8_t bp_vend[64]; /* vendor-specific area */ 39}; 40 41/* 42 * UDP port numbers, server and client. 43 */ 44#define IPPORT_BOOTPS 67 45#define IPPORT_BOOTPC 68 46 47#define BOOTPREPLY 2 48#define BOOTPREQUEST 1 49 50/* 51 * Vendor magic cookie (v_magic) for CMU 52 */ 53#define VM_CMU "CMU" 54 55/* 56 * Vendor magic cookie (v_magic) for RFC1048 57 */ 58#define VM_RFC1048 { 99, 130, 83, 99 } 59 60 61 62/* 63 * RFC1048 tag values used to specify what information is being supplied in 64 * the vendor field of the packet. 65 */ 66 67#define TAG_PAD ((u_int8_t) 0) 68#define TAG_SUBNET_MASK ((u_int8_t) 1) 69#define TAG_TIME_OFFSET ((u_int8_t) 2) 70#define TAG_GATEWAY ((u_int8_t) 3) 71#define TAG_TIME_SERVER ((u_int8_t) 4) 72#define TAG_NAME_SERVER ((u_int8_t) 5) 73#define TAG_DOMAIN_SERVER ((u_int8_t) 6) 74#define TAG_LOG_SERVER ((u_int8_t) 7) 75#define TAG_COOKIE_SERVER ((u_int8_t) 8) 76#define TAG_LPR_SERVER ((u_int8_t) 9) 77#define TAG_IMPRESS_SERVER ((u_int8_t) 10) 78#define TAG_RLP_SERVER ((u_int8_t) 11) 79#define TAG_HOSTNAME ((u_int8_t) 12) 80#define TAG_BOOTSIZE ((u_int8_t) 13) 81#define TAG_END ((u_int8_t) 255) 82/* RFC1497 tags */ 83#define TAG_DUMPPATH ((u_int8_t) 14) 84#define TAG_DOMAINNAME ((u_int8_t) 15) 85#define TAG_SWAP_SERVER ((u_int8_t) 16) 86#define TAG_ROOTPATH ((u_int8_t) 17) 87#define TAG_EXTPATH ((u_int8_t) 18) 88/* RFC2132 */ 89#define TAG_IP_FORWARD ((u_int8_t) 19) 90#define TAG_NL_SRCRT ((u_int8_t) 20) 91#define TAG_PFILTERS ((u_int8_t) 21) 92#define TAG_REASS_SIZE ((u_int8_t) 22) 93#define TAG_DEF_TTL ((u_int8_t) 23) 94#define TAG_MTU_TIMEOUT ((u_int8_t) 24) 95#define TAG_MTU_TABLE ((u_int8_t) 25) 96#define TAG_INT_MTU ((u_int8_t) 26) 97#define TAG_LOCAL_SUBNETS ((u_int8_t) 27) 98#define TAG_BROAD_ADDR ((u_int8_t) 28) 99#define TAG_DO_MASK_DISC ((u_int8_t) 29) 100#define TAG_SUPPLY_MASK ((u_int8_t) 30) 101#define TAG_DO_RDISC ((u_int8_t) 31) 102#define TAG_RTR_SOL_ADDR ((u_int8_t) 32) 103#define TAG_STATIC_ROUTE ((u_int8_t) 33) 104#define TAG_USE_TRAILERS ((u_int8_t) 34) 105#define TAG_ARP_TIMEOUT ((u_int8_t) 35) 106#define TAG_ETH_ENCAP ((u_int8_t) 36) 107#define TAG_TCP_TTL ((u_int8_t) 37) 108#define TAG_TCP_KEEPALIVE ((u_int8_t) 38) 109#define TAG_KEEPALIVE_GO ((u_int8_t) 39) 110#define TAG_NIS_DOMAIN ((u_int8_t) 40) 111#define TAG_NIS_SERVERS ((u_int8_t) 41) 112#define TAG_NTP_SERVERS ((u_int8_t) 42) 113#define TAG_VENDOR_OPTS ((u_int8_t) 43) 114#define TAG_NETBIOS_NS ((u_int8_t) 44) 115#define TAG_NETBIOS_DDS ((u_int8_t) 45) 116#define TAG_NETBIOS_NODE ((u_int8_t) 46) 117#define TAG_NETBIOS_SCOPE ((u_int8_t) 47) 118#define TAG_XWIN_FS ((u_int8_t) 48) 119#define TAG_XWIN_DM ((u_int8_t) 49) 120#define TAG_NIS_P_DOMAIN ((u_int8_t) 64) 121#define TAG_NIS_P_SERVERS ((u_int8_t) 65) 122#define TAG_MOBILE_HOME ((u_int8_t) 68) 123#define TAG_SMPT_SERVER ((u_int8_t) 69) 124#define TAG_POP3_SERVER ((u_int8_t) 70) 125#define TAG_NNTP_SERVER ((u_int8_t) 71) 126#define TAG_WWW_SERVER ((u_int8_t) 72) 127#define TAG_FINGER_SERVER ((u_int8_t) 73) 128#define TAG_IRC_SERVER ((u_int8_t) 74) 129#define TAG_STREETTALK_SRVR ((u_int8_t) 75) 130#define TAG_STREETTALK_STDA ((u_int8_t) 76) 131/* DHCP options */ 132#define TAG_REQUESTED_IP ((u_int8_t) 50) 133#define TAG_IP_LEASE ((u_int8_t) 51) 134#define TAG_OPT_OVERLOAD ((u_int8_t) 52) 135#define TAG_TFTP_SERVER ((u_int8_t) 66) 136#define TAG_BOOTFILENAME ((u_int8_t) 67) 137#define TAG_DHCP_MESSAGE ((u_int8_t) 53) 138#define TAG_SERVER_ID ((u_int8_t) 54) 139#define TAG_PARM_REQUEST ((u_int8_t) 55) 140#define TAG_MESSAGE ((u_int8_t) 56) 141#define TAG_MAX_MSG_SIZE ((u_int8_t) 57) 142#define TAG_RENEWAL_TIME ((u_int8_t) 58) 143#define TAG_REBIND_TIME ((u_int8_t) 59) 144#define TAG_VENDOR_CLASS ((u_int8_t) 60) 145#define TAG_CLIENT_ID ((u_int8_t) 61) 146/* RFC 2241 */ 147#define TAG_NDS_SERVERS ((u_int8_t) 85) 148#define TAG_NDS_TREE_NAME ((u_int8_t) 86) 149#define TAG_NDS_CONTEXT ((u_int8_t) 87) 150/* RFC 2242 */ 151#define TAG_NDS_IPDOMAIN ((u_int8_t) 62) 152#define TAG_NDS_IPINFO ((u_int8_t) 63) 153/* RFC 2485 */ 154#define TAG_OPEN_GROUP_UAP ((u_int8_t) 98) 155/* RFC 2563 */ 156#define TAG_DISABLE_AUTOCONF ((u_int8_t) 116) 157/* RFC 2610 */ 158#define TAG_SLP_DA ((u_int8_t) 78) 159#define TAG_SLP_SCOPE ((u_int8_t) 79) 160/* RFC 2937 */ 161#define TAG_NS_SEARCH ((u_int8_t) 117) 162/* RFC 3011 */ 163#define TAG_IP4_SUBNET_SELECT ((u_int8_t) 118) 164/* RFC 3442 */ 165#define TAG_CLASSLESS_STATIC_RT ((u_int8_t) 121) 166#define TAG_CLASSLESS_STA_RT_MS ((u_int8_t) 249) 167/* ftp://ftp.isi.edu/.../assignments/bootp-dhcp-extensions */ 168#define TAG_USER_CLASS ((u_int8_t) 77) 169#define TAG_SLP_NAMING_AUTH ((u_int8_t) 80) 170#define TAG_CLIENT_FQDN ((u_int8_t) 81) 171#define TAG_AGENT_CIRCUIT ((u_int8_t) 82) 172#define TAG_AGENT_REMOTE ((u_int8_t) 83) 173#define TAG_AGENT_MASK ((u_int8_t) 84) 174#define TAG_TZ_STRING ((u_int8_t) 88) 175#define TAG_FQDN_OPTION ((u_int8_t) 89) 176#define TAG_AUTH ((u_int8_t) 90) 177#define TAG_VINES_SERVERS ((u_int8_t) 91) 178#define TAG_SERVER_RANK ((u_int8_t) 92) 179#define TAG_CLIENT_ARCH ((u_int8_t) 93) 180#define TAG_CLIENT_NDI ((u_int8_t) 94) 181#define TAG_CLIENT_GUID ((u_int8_t) 97) 182#define TAG_LDAP_URL ((u_int8_t) 95) 183#define TAG_6OVER4 ((u_int8_t) 96) 184#define TAG_PRINTER_NAME ((u_int8_t) 100) 185#define TAG_MDHCP_SERVER ((u_int8_t) 101) 186#define TAG_IPX_COMPAT ((u_int8_t) 110) 187#define TAG_NETINFO_PARENT ((u_int8_t) 112) 188#define TAG_NETINFO_PARENT_TAG ((u_int8_t) 113) 189#define TAG_URL ((u_int8_t) 114) 190#define TAG_FAILOVER ((u_int8_t) 115) 191#define TAG_EXTENDED_REQUEST ((u_int8_t) 126) 192#define TAG_EXTENDED_OPTION ((u_int8_t) 127) 193 194 195/* DHCP Message types (values for TAG_DHCP_MESSAGE option) */ 196#define DHCPDISCOVER 1 197#define DHCPOFFER 2 198#define DHCPREQUEST 3 199#define DHCPDECLINE 4 200#define DHCPACK 5 201#define DHCPNAK 6 202#define DHCPRELEASE 7 203#define DHCPINFORM 8 204 205 206/* 207 * "vendor" data permitted for CMU bootp clients. 208 */ 209 210struct cmu_vend { 211 u_int8_t v_magic[4]; /* magic number */ 212 u_int32_t v_flags; /* flags/opcodes, etc. */ 213 struct in_addr v_smask; /* Subnet mask */ 214 struct in_addr v_dgate; /* Default gateway */ 215 struct in_addr v_dns1, v_dns2; /* Domain name servers */ 216 struct in_addr v_ins1, v_ins2; /* IEN-116 name servers */ 217 struct in_addr v_ts1, v_ts2; /* Time servers */ 218 u_int8_t v_unused[24]; /* currently unused */ 219}; 220 221 222/* v_flags values */ 223#define VF_SMASK 1 /* Subnet mask field contains valid data */ 224 225/* RFC 4702 DHCP Client FQDN Option */ 226 227#define CLIENT_FQDN_FLAGS_S 0x01 228#define CLIENT_FQDN_FLAGS_O 0x02 229#define CLIENT_FQDN_FLAGS_E 0x04 230#define CLIENT_FQDN_FLAGS_N 0x08 231