239 lines
4.8 KiB
C
239 lines
4.8 KiB
C
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/*++
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Copyright (c) 1998, Microsoft Corporation
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Module Name:
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dhcpmsg.h
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Abstract:
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This module contains declarations related to the DHCP allocator's
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message-processing.
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Author:
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Abolade Gbadegesin (aboladeg) 6-Mar-1998
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Revision History:
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--*/
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#ifndef _NATHLP_DHCPMSG_H_
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#define _NATHLP_DHCPMSG_H_
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//
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// CONSTANT DECLARATIONS
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//
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#define DHCP_MAXIMUM_RENEWAL_TIME (5 * 60)
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#define DHCP_NBT_NODE_TYPE_B 1
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#define DHCP_NBT_NODE_TYPE_P 2
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#define DHCP_NBT_NODE_TYPE_M 4
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#define DHCP_NBT_NODE_TYPE_H 8
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//
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// DHCP message format
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//
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#include <pshpack1.h>
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//
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// Disable "zero-sized array in struct/union" warning
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//
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#pragma warning(push)
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#pragma warning(disable : 4200)
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typedef struct _DHCP_OPTION {
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UCHAR Tag;
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UCHAR Length;
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UCHAR Option[];
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} DHCP_OPTION, *PDHCP_OPTION;
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typedef struct _DHCP_FOOTER {
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UCHAR Cookie[4];
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} DHCP_FOOTER, *PDHCP_FOOTER;
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typedef struct _DHCP_HEADER {
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UCHAR Operation;
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UCHAR HardwareAddressType;
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UCHAR HardwareAddressLength;
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UCHAR HopCount;
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ULONG TransactionId;
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USHORT SecondsSinceBoot;
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USHORT Flags;
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ULONG ClientAddress;
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ULONG AssignedAddress;
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ULONG BootstrapServerAddress;
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ULONG RelayAgentAddress;
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UCHAR HardwareAddress[16];
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UCHAR ServerHostName[64];
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UCHAR BootFile[128];
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DHCP_FOOTER Footer[];
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} DHCP_HEADER, *PDHCP_HEADER;
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#pragma warning(pop)
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#include <poppack.h>
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//
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// MACRO DECLARATIONS
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//
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//
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// BOOTP operation codes
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//
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#define BOOTP_OPERATION_REQUEST 1
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#define BOOTP_OPERATION_REPLY 2
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//
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// BOOTP flags
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//
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#define BOOTP_FLAG_BROADCAST 0x0080
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//
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// BOOTP maximum option-area size
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//
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#define BOOTP_VENDOR_LENGTH 64
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//
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// Internal transaction ID for DHCP server detection
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//
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#define DHCP_DETECTION_TRANSACTION_ID 'MSFT'
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//
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// DHCP magic cookie
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//
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#define DHCP_MAGIC_COOKIE ((99 << 24) | (83 << 16) | (130 << 8) | (99))
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#define DHCP_MAGIC_COOKIE_SIZE 4
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//
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// DHCP option tag values
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//
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#define DHCP_TAG_PAD 0
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#define DHCP_TAG_SUBNET_MASK 1
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#define DHCP_TAG_ROUTER 3
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#define DHCP_TAG_DNS_SERVER 6
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#define DHCP_TAG_HOST_NAME 12
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#define DHCP_TAG_DOMAIN_NAME 15
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#define DHCP_TAG_STATIC_ROUTE 33
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#define DHCP_TAG_WINS_SERVER 44
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#define DHCP_TAG_NBT_NODE_TYPE 46
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#define DHCP_TAG_NBT_SCOPE 47
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#define DHCP_TAG_REQUESTED_ADDRESS 50
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#define DHCP_TAG_LEASE_TIME 51
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#define DHCP_TAG_OPTION_OVERLOAD 52
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#define DHCP_TAG_MESSAGE_TYPE 53
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#define DHCP_TAG_SERVER_IDENTIFIER 54
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#define DHCP_TAG_PARAMETER_REQUEST_LIST 55
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#define DHCP_TAG_ERROR_MESSAGE 56
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#define DHCP_TAG_MAXIMUM_MESSAGE_SIZE 57
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#define DHCP_TAG_RENEWAL_TIME 58
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#define DHCP_TAG_REBINDING_TIME 59
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#define DHCP_TAG_VENDOR_CLASS 60
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#define DHCP_TAG_CLIENT_IDENTIFIER 61
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#define DHCP_TAG_DYNAMIC_DNS 81
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#define DHCP_TAG_END 255
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//
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// Enumeration: DHCP_OPTION_INDEX
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//
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// The following enumerates the options of interest to the DHCP allocator.
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// The enumeration aids in the processing of the options.
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// (See 'DhcpExtractOptionsFromMessage').
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//
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typedef enum {
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DhcpOptionClientIdentifier,
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DhcpOptionMessageType,
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DhcpOptionRequestedAddress,
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DhcpOptionParameterRequestList,
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DhcpOptionErrorMessage,
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DhcpOptionDynamicDns,
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DhcpOptionHostName,
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DhcpOptionCount
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} DHCP_OPTION_INDEX;
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//
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// DHCP message type values
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//
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#define DHCP_MESSAGE_BOOTP 0
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#define DHCP_MESSAGE_DISCOVER 1
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#define DHCP_MESSAGE_OFFER 2
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#define DHCP_MESSAGE_REQUEST 3
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#define DHCP_MESSAGE_DECLINE 4
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#define DHCP_MESSAGE_ACK 5
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#define DHCP_MESSAGE_NAK 6
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#define DHCP_MESSAGE_RELEASE 7
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#define DHCP_MESSAGE_INFORM 8
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//
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// IP/1394 support (RFC 2855)
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//
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#define IP1394_HTYPE 0x18
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//
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// FUNCTION DECLARATIONS
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//
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ULONG
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DhcpExtractOptionsFromMessage(
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PDHCP_HEADER Headerp,
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ULONG MessageSize,
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DHCP_OPTION UNALIGNED* OptionArray[]
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);
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VOID
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DhcpProcessBootpMessage(
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PDHCP_INTERFACE Interfacep,
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PNH_BUFFER Bufferp,
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DHCP_OPTION UNALIGNED* OptionArray[]
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);
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VOID
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DhcpProcessDiscoverMessage(
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PDHCP_INTERFACE Interfacep,
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PNH_BUFFER Bufferp,
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DHCP_OPTION UNALIGNED* OptionArray[]
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);
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VOID
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DhcpProcessInformMessage(
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PDHCP_INTERFACE Interfacep,
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PNH_BUFFER Bufferp,
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DHCP_OPTION UNALIGNED* OptionArray[]
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);
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VOID
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DhcpProcessMessage(
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PDHCP_INTERFACE Interfacep,
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PNH_BUFFER Bufferp
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);
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VOID
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DhcpProcessRequestMessage(
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PDHCP_INTERFACE Interfacep,
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PNH_BUFFER Bufferp,
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DHCP_OPTION UNALIGNED* OptionArray[]
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);
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ULONG
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DhcpWriteClientRequestMessage(
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PDHCP_INTERFACE Interfacep,
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PDHCP_BINDING Binding
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);
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#endif // _NATHLP_DHCPMSG_H_
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