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Description
Ultibo DHCP/BOOTP Protocol client unit
To be documented
Constants
[Expand]
DHCP specific constants BOOTP_*
BOOTP_DELAY = 1000;
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(Previously 0)
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BOOTP_TIMEOUT = 8000;
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(Previously 4000) We wait for 8 seconds for a BOOTP reply
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BOOTP_RETRIES = 6;
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(Previously 4) Try the request 6 times
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BOOTP_MIN_DELAY = 0;
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BOOTP_MAX_DELAY = 10000;
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BOOTP_MIN_TIMEOUT = 500;
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BOOTP_MAX_TIMEOUT = 15000;
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BOOTP_MIN_RETRIES = 1;
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BOOTP_MAX_RETRIES = 100;
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DHCP_DELAY = 1000;
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(Previously 0)
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DHCP_TIMEOUT = 8000;
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(Previously 4000) We wait for 8 seconds for a DHCP reply
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DHCP_RETRIES = 6;
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(Previously 4) Try the request 6 times
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DHCP_MIN_DELAY = 0;
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DHCP_MAX_DELAY = 10000;
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DHCP_MIN_TIMEOUT = 500;
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DHCP_MAX_TIMEOUT = 15000;
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DHCP_MIN_RETRIES = 1;
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DHCP_MAX_RETRIES = 100;
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BOOTP_VENDOR_SIZE = 64;
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Size of the Vendor area
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DHCP_OPTIONS_SIZE = 312;
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Size of the Options area
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DHCP_MESSAGE_SIZE = 576;
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Size of the max message
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[Expand]
BOOTP/DHCP request constants BOOTP_REQUEST*
BOOTP_REQUEST = 1;
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BOOTP_REPLY = 2;
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[Expand]
DHCP message constants DHCP_*
DHCP_DISCOVER = 1;
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DHCP_OFFER = 2;
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DHCP_REQUEST = 3;
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DHCP_DECLINE = 4;
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DHCP_ACK = 5;
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DHCP_NAK = 6;
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DHCP_RELEASE = 7;
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DHCP_INFORM = 8;
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DHCP_RENEWAL_TO = 1;
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DHCP_REBIND_TO = 2;
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[Expand]
BOOTP/DHCP constants
PAD_OPT = 0;
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END_OPT = 255;
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SUBNET_MASK = 1;
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TIME_OFFSET = 2;
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ROUTERS_ON_SNET = 3;
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TIME_SRV = 4;
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NAME_SRV = 5;
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DNS_SRV = 6;
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LOG_SRV = 7;
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COOKIE_SRV = 8;
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LPR_SRV = 9;
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IMPRESS_SRV = 10;
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RES_LOCATION_SRV = 11;
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HOST_NAME = 12;
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BOOT_FSIZE = 13;
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MERIT_DUMPFILE = 14;
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DOMAIN_NAME = 15;
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SWAP_SRV = 16;
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ROOT_PATH = 17;
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EXTENTIONS_PATH = 18;
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IP_FORWARDING = 19;
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NON_LOCAL_SRC_ROUTE = 20;
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POLICY_FILTER = 21;
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MAX_DGRAM_REASM_SIZE = 22;
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IP_DEFAULT_TTL = 23;
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PATH_MTU_AGING_TIMEOUT = 24;
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PATH_MTU_PLATEAU_TABLE = 25;
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IF_MTU = 26;
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ALL_SUBNETS_LOCAL = 27;
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BROADCAST_ADDR = 28;
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PERFORM_MASK_DISCOVERY = 29;
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MASK_SUPPLIER = 30;
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PERFORM_ROUTER_DISCOVERY = 31;
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ROUTER_SOLICITATION_ADDR = 32;
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STATIC_ROUTE = 33;
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TRAILER_ENCAPSULATION = 34;
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ARP_CACHE_TIMEOUT = 35;
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ETHERNET_ENCAPSULATION = 36;
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TCP_DEFAULT_TTL = 37;
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TCP_KEEPALIVE_INTERVAL = 38;
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TCP_KEEPALIVE_GARBAGE = 39;
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NIS_DOMAIN_NAME = 40;
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NIS_SRVS = 41;
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NTP_SRVS = 42;
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VENDOR_SPECIFIC_INFO = 43;
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NBIOS_NAME_SRV = 44;
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NBIOS_DGRAM_DIST_SRV = 45;
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NBIOS_NODE_TYPE = 46;
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NBIOS_SCOPE = 47;
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XFONT_SRV = 48;
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XDISPLAY_MANAGER = 49;
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| DHCP Options
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DHCP_REQUESTED_IP_ADDR = 50;
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DHCP_IP_ADDR_LEASE_TIME = 51;
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DHCP_OPT_OVERLOAD = 52;
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DHCP_MSG_TYPE = 53;
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DHCP_SRV_IDENTIFIER = 54;
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DHCP_PARAM_REQUEST = 55;
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DHCP_MSG = 56;
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DHCP_MAX_MSG_SIZE = 57;
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DHCP_T1_VALUE = 58;
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DHCP_T2_VALUE = 59;
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DHCP_CLASS_ID = 60;
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DHCP_CLIENT_ID = 61;
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DHCP_NIS_DOMAIN_OPT = 64;
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DHCP_NIS_SRV_OPT = 65;
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DHCP_TFTP_SERVER = 66;
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DHCP_BOOT_FILENAME = 67;
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DHCP_MOBIP_HOME_AGENTS = 68;
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DHCP_SMTP_SRVS = 69;
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DHCP_POP3_SRVS = 70;
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DHCP_NNTP_SRVS = 71;
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DHCP_WWW_SRVS = 72;
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DHCP_FINGER_SRVS = 73;
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DHCP_IRC_SRVS = 74;
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DHCP_STREET_TALK_SRVS = 75;
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DHCP_STDA_SRVS = 76;
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[Expand]
DHCP flag constants DHCP_FLAG_*
DHCP_FLAG_BROADCAST = $8000;
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[Expand]
ARP config constants ARP_CONFIG_*
ARP_CONFIG_START = $C0A86401;
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192.168.100.1
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ARP_CONFIG_STOP = $C0A864FE;
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192.168.100.254
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Type definitions
DHCP specific types
[Expand]
PBOOTPHeader = ^TBOOTPHeader;
TBOOTPHeader = packed record
Opcode:Byte;
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packet op code / message type
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HardwareType:Byte;
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hardware address type, 1 = 10 mb ethernet
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HardwareLength:Byte;
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hardware address len, eg '6' for 10mb eth
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Hops:Byte;
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client sets to zero, optionally used by gateways in cross-gateway booting
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Identifier:LongWord;
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transaction ID, a random number
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Seconds:Word;
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filled in by client, seconds elapsed since client started trying to boot
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Reserved:Word;
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ClientIP:TInAddr;
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client IP address filled in by client if known
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YourIP:TInAddr;
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'your' (client) IP address filled by server if client doesn't know
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ServerIP:TInAddr;
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server IP address returned in bootreply
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GatewayIP:TInAddr;
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gateway IP address, used in optional cross-gateway booting
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ClientHardware:array[0..15] of Byte;
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client hardware address, filled by client
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ClientHardware:THardwareAddress;
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client hardware address, filled by client
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DummyData:array[0..9] of Byte;
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dummy to fill out remaining bytes of above
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ServerName:array[0..63] of Byte;
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optional server host name, null terminated
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FileName:array[0..127] of Byte;
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boot file name, null terminated string 'generic' name or null in bootrequest, fully qualified directory-path name in bootreply
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VendorData:array[0..63] of Byte;
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optional vendor-specific area
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VendorData:array[0..BOOTP_VENDOR_SIZE - 1] of Byte;
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optional vendor-specific area
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DHCP header types
[Expand]
PDHCPHeader = ^TDHCPHeader;
TDHCPHeader = packed record
Opcode:Byte;
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packet op code / message type
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HardwareType:Byte;
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hardware address type, 1 = 10 mb ethernet
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HardwareLength:Byte;
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hardware address len, eg '6' for 10mb eth
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Hops:Byte;
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client sets to zero, optionally used by gateways in cross-gateway booting
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Identifier:LongWord;
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transaction ID, a random number
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Seconds:Word;
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filled in by client, seconds elapsed since client started trying to boot
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Flags:Word;
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ClientIP:TInAddr;
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client IP address filled in by client if known
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YourIP:TInAddr;
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'your' (client) IP address filled by server if client doesn't know
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ServerIP:TInAddr;
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server IP address returned in bootreply
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GatewayIP:TInAddr;
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gateway IP address, used in optional cross-gateway booting
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ClientHardware:array[0..15] of Byte;
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client hardware address, filled by client
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ClientHardware:THardwareAddress;
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client hardware address, filled by client
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DummyData:array[0..9] of Byte;
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dummy to fill out remaining bytes of above
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ServerName:array[0..63] of Byte;
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optional server host name, null terminated
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FileName:array[0..127] of Byte;
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boot file name, null terminated string 'generic' name or null in bootrequest, fully qualified directory-path name in bootreply
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Options:array[0..311] of Byte;
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DHCP options area (minimum 312 bytes)
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Options:array[0..DHCP_OPTIONS_SIZE - 1] of Byte;
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DHCP options area (minimum 312 bytes)
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DHCP client Id types
[Expand]
PDHCPClientId = ^TDHCPClientId;
TDHCPClientId = packed record
Tag:Byte;
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Hardware:THardwareAddress;
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Class definitions
To be documented
Public variables
None defined
Function declarations
Initialization functions
[Expand]
procedure DHCPInit;
Description: To be documented
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