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Diffstat (limited to 'includes/dhcp.h')
| -rw-r--r-- | includes/dhcp.h | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/includes/dhcp.h b/includes/dhcp.h new file mode 100644 index 0000000..f916468 --- /dev/null +++ b/includes/dhcp.h @@ -0,0 +1,203 @@ +/* dhcp.h + + Protocol structures... */ + +/* + * Copyright (c) 2011-2012,2014 by Internet Systems Consortium, Inc. ("ISC") + * Copyright (c) 2004-2009 by Internet Systems Consortium, Inc. ("ISC") + * Copyright (c) 1995-2003 by Internet Software Consortium + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT + * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * Internet Systems Consortium, Inc. + * 950 Charter Street + * Redwood City, CA 94063 + * <info@isc.org> + * https://www.isc.org/ + * + */ + +#ifndef DHCP_H +#define DHCP_H + +#define DHCP_UDP_OVERHEAD (20 + /* IP header */ \ + 8) /* UDP header */ +#define DHCP_SNAME_LEN 64 +#define DHCP_FILE_LEN 128 +#define DHCP_FIXED_NON_UDP 236 +#define DHCP_FIXED_LEN (DHCP_FIXED_NON_UDP + DHCP_UDP_OVERHEAD) + /* Everything but options. */ +#define BOOTP_MIN_LEN 300 + +#define DHCP_MTU_MAX 1500 +#define DHCP_MTU_MIN 576 + +#define DHCP_MAX_OPTION_LEN (DHCP_MTU_MAX - DHCP_FIXED_LEN) +#define DHCP_MIN_OPTION_LEN (DHCP_MTU_MIN - DHCP_FIXED_LEN) + +struct dhcp_packet { + u_int8_t op; /* 0: Message opcode/type */ + u_int8_t htype; /* 1: Hardware addr type (net/if_types.h) */ + u_int8_t hlen; /* 2: Hardware addr length */ + u_int8_t hops; /* 3: Number of relay agent hops from client */ + u_int32_t xid; /* 4: Transaction ID */ + u_int16_t secs; /* 8: Seconds since client started looking */ + u_int16_t flags; /* 10: Flag bits */ + struct in_addr ciaddr; /* 12: Client IP address (if already in use) */ + struct in_addr yiaddr; /* 16: Client IP address */ + struct in_addr siaddr; /* 18: IP address of next server to talk to */ + struct in_addr giaddr; /* 20: DHCP relay agent IP address */ + unsigned char chaddr [16]; /* 24: Client hardware address */ + char sname [DHCP_SNAME_LEN]; /* 40: Server name */ + char file [DHCP_FILE_LEN]; /* 104: Boot filename */ + unsigned char options [DHCP_MAX_OPTION_LEN]; + /* 212: Optional parameters + (actual length dependent on MTU). */ +}; + +/* BOOTP (rfc951) message types */ +#define BOOTREQUEST 1 +#define BOOTREPLY 2 + +/* Possible values for flags field... */ +#define BOOTP_BROADCAST 32768L + +/* Possible values for hardware type (htype) field... */ +#define HTYPE_ETHER 1 /* Ethernet 10Mbps */ +#define HTYPE_IEEE802 6 /* IEEE 802.2 Token Ring... */ +#define HTYPE_FDDI 8 /* FDDI... */ +#define HTYPE_INFINIBAND 32 /* IP over Infiniband */ +#define HTYPE_IPMP 255 /* IPMP - random hw address - there + * is no standard for this so we + * just steal a type */ + +/* Magic cookie validating dhcp options field (and bootp vendor + extensions field). */ +#define DHCP_OPTIONS_COOKIE "\143\202\123\143" + +/* DHCP Option codes: */ + +#define DHO_PAD 0 +#define DHO_SUBNET_MASK 1 +#define DHO_TIME_OFFSET 2 +#define DHO_ROUTERS 3 +#define DHO_TIME_SERVERS 4 +#define DHO_NAME_SERVERS 5 +#define DHO_DOMAIN_NAME_SERVERS 6 +#define DHO_LOG_SERVERS 7 +#define DHO_COOKIE_SERVERS 8 +#define DHO_LPR_SERVERS 9 +#define DHO_IMPRESS_SERVERS 10 +#define DHO_RESOURCE_LOCATION_SERVERS 11 +#define DHO_HOST_NAME 12 +#define DHO_BOOT_SIZE 13 +#define DHO_MERIT_DUMP 14 +#define DHO_DOMAIN_NAME 15 +#define DHO_SWAP_SERVER 16 +#define DHO_ROOT_PATH 17 +#define DHO_EXTENSIONS_PATH 18 +#define DHO_IP_FORWARDING 19 +#define DHO_NON_LOCAL_SOURCE_ROUTING 20 +#define DHO_POLICY_FILTER 21 +#define DHO_MAX_DGRAM_REASSEMBLY 22 +#define DHO_DEFAULT_IP_TTL 23 +#define DHO_PATH_MTU_AGING_TIMEOUT 24 +#define DHO_PATH_MTU_PLATEAU_TABLE 25 +#define DHO_INTERFACE_MTU 26 +#define DHO_ALL_SUBNETS_LOCAL 27 +#define DHO_BROADCAST_ADDRESS 28 +#define DHO_PERFORM_MASK_DISCOVERY 29 +#define DHO_MASK_SUPPLIER 30 +#define DHO_ROUTER_DISCOVERY 31 +#define DHO_ROUTER_SOLICITATION_ADDRESS 32 +#define DHO_STATIC_ROUTES 33 +#define DHO_TRAILER_ENCAPSULATION 34 +#define DHO_ARP_CACHE_TIMEOUT 35 +#define DHO_IEEE802_3_ENCAPSULATION 36 +#define DHO_DEFAULT_TCP_TTL 37 +#define DHO_TCP_KEEPALIVE_INTERVAL 38 +#define DHO_TCP_KEEPALIVE_GARBAGE 39 +#define DHO_NIS_DOMAIN 40 +#define DHO_NIS_SERVERS 41 +#define DHO_NTP_SERVERS 42 +#define DHO_VENDOR_ENCAPSULATED_OPTIONS 43 +#define DHO_NETBIOS_NAME_SERVERS 44 +#define DHO_NETBIOS_DD_SERVER 45 +#define DHO_NETBIOS_NODE_TYPE 46 +#define DHO_NETBIOS_SCOPE 47 +#define DHO_FONT_SERVERS 48 +#define DHO_X_DISPLAY_MANAGER 49 +#define DHO_DHCP_REQUESTED_ADDRESS 50 +#define DHO_DHCP_LEASE_TIME 51 +#define DHO_DHCP_OPTION_OVERLOAD 52 +#define DHO_DHCP_MESSAGE_TYPE 53 +#define DHO_DHCP_SERVER_IDENTIFIER 54 +#define DHO_DHCP_PARAMETER_REQUEST_LIST 55 +#define DHO_DHCP_MESSAGE 56 +#define DHO_DHCP_MAX_MESSAGE_SIZE 57 +#define DHO_DHCP_RENEWAL_TIME 58 +#define DHO_DHCP_REBINDING_TIME 59 +#define DHO_VENDOR_CLASS_IDENTIFIER 60 +#define DHO_DHCP_CLIENT_IDENTIFIER 61 +#define DHO_NWIP_DOMAIN_NAME 62 +#define DHO_NWIP_SUBOPTIONS 63 +#define DHO_USER_CLASS 77 +#define DHO_FQDN 81 +#define DHO_DHCP_AGENT_OPTIONS 82 +#define DHO_AUTHENTICATE 90 /* RFC3118, was 210 */ +#define DHO_CLIENT_LAST_TRANSACTION_TIME 91 +#define DHO_ASSOCIATED_IP 92 +#define DHO_SUBNET_SELECTION 118 /* RFC3011! */ +#define DHO_DOMAIN_SEARCH 119 /* RFC3397 */ +#define DHO_VIVCO_SUBOPTIONS 124 +#define DHO_VIVSO_SUBOPTIONS 125 + +#define DHO_END 255 + +/* DHCP message types. */ +#define DHCPDISCOVER 1 +#define DHCPOFFER 2 +#define DHCPREQUEST 3 +#define DHCPDECLINE 4 +#define DHCPACK 5 +#define DHCPNAK 6 +#define DHCPRELEASE 7 +#define DHCPINFORM 8 +#define DHCPLEASEQUERY 10 +#define DHCPLEASEUNASSIGNED 11 +#define DHCPLEASEUNKNOWN 12 +#define DHCPLEASEACTIVE 13 + + +/* Relay Agent Information option subtypes: */ +#define RAI_CIRCUIT_ID 1 +#define RAI_REMOTE_ID 2 +#define RAI_AGENT_ID 3 +#define RAI_LINK_SELECT 5 + +/* FQDN suboptions: */ +#define FQDN_NO_CLIENT_UPDATE 1 +#define FQDN_SERVER_UPDATE 2 +#define FQDN_ENCODED 3 +#define FQDN_RCODE1 4 +#define FQDN_RCODE2 5 +#define FQDN_HOSTNAME 6 +#define FQDN_DOMAINNAME 7 +#define FQDN_FQDN 8 +#define FQDN_SUBOPTION_COUNT 8 + +/* Enterprise Suboptions: */ +#define VENDOR_ISC_SUBOPTIONS 2495 + +#endif /* DHCP_H */ + |