2007-09-30 05:08:02 +02:00
|
|
|
/** @file
|
2009-01-16 01:09:52 +01:00
|
|
|
To validate, parse and process the DHCP options.
|
|
|
|
|
|
|
|
Copyright (c) 2006, Intel Corporation.<BR>
|
2007-09-30 05:08:02 +02:00
|
|
|
All rights reserved. This program and the accompanying materials
|
|
|
|
are licensed and made available under the terms and conditions of the BSD License
|
|
|
|
which accompanies this distribution. The full text of the license may be found at
|
|
|
|
http://opensource.org/licenses/bsd-license.php
|
|
|
|
|
|
|
|
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
|
|
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
|
|
|
|
|
|
**/
|
|
|
|
|
|
|
|
#ifndef __EFI_DHCP4_OPTION_H__
|
|
|
|
#define __EFI_DHCP4_OPTION_H__
|
|
|
|
|
2008-11-14 10:16:11 +01:00
|
|
|
///
|
|
|
|
/// DHCP option tags (types)
|
|
|
|
///
|
2008-06-30 09:20:33 +02:00
|
|
|
typedef enum {
|
2007-09-30 05:08:02 +02:00
|
|
|
//
|
|
|
|
// RFC1497 vendor extensions
|
|
|
|
//
|
|
|
|
DHCP_TAG_PAD = 0, // Pad Option
|
|
|
|
DHCP_TAG_EOP = 255, // End Option
|
|
|
|
DHCP_TAG_NETMASK = 1, // Subnet Mask
|
|
|
|
DHCP_TAG_TIME_OFFSET = 2, // Time Offset from UTC
|
|
|
|
DHCP_TAG_ROUTER = 3, // Router option,
|
|
|
|
DHCP_TAG_TIME_SERVER = 4, // Time Server
|
|
|
|
DHCP_TAG_NAME_SERVER = 5, // Name Server
|
|
|
|
DHCP_TAG_DNS_SERVER = 6, // Domain Name Server
|
|
|
|
DHCP_TAG_LOG_SERVER = 7, // Log Server
|
|
|
|
DHCP_TAG_COOKIE_SERVER = 8, // Cookie Server
|
|
|
|
DHCP_TAG_LPR_SERVER = 9, // LPR Print Server
|
|
|
|
DHCP_TAG_IMPRESS_SERVER = 10, // Impress Server
|
|
|
|
DHCP_TAG_RL_SERVER = 11, // Resource Location Server
|
|
|
|
DHCP_TAG_HOSTNAME = 12, // Host Name
|
|
|
|
DHCP_TAG_BOOTFILE_LEN = 13, // Boot File Size
|
|
|
|
DHCP_TAG_DUMP = 14, // Merit Dump File
|
|
|
|
DHCP_TAG_DOMAINNAME = 15, // Domain Name
|
|
|
|
DHCP_TAG_SWAP_SERVER = 16, // Swap Server
|
|
|
|
DHCP_TAG_ROOTPATH = 17, // Root path
|
|
|
|
DHCP_TAG_EXTEND_PATH = 18, // Extensions Path
|
|
|
|
|
|
|
|
//
|
|
|
|
// IP Layer Parameters per Host
|
|
|
|
//
|
|
|
|
DHCP_TAG_IPFORWARD = 19, // IP Forwarding Enable/Disable
|
|
|
|
DHCP_TAG_NONLOCAL_SRR = 20, // on-Local Source Routing Enable/Disable
|
|
|
|
DHCP_TAG_POLICY_SRR = 21, // Policy Filter
|
|
|
|
DHCP_TAG_EMTU = 22, // Maximum Datagram Reassembly Size
|
|
|
|
DHCP_TAG_TTL = 23, // Default IP Time-to-live
|
|
|
|
DHCP_TAG_PATHMTU_AGE = 24, // Path MTU Aging Timeout
|
|
|
|
DHCP_TAG_PATHMTU_PLATEAU = 25, // Path MTU Plateau Table
|
|
|
|
|
|
|
|
//
|
|
|
|
// IP Layer Parameters per Interface
|
|
|
|
//
|
|
|
|
DHCP_TAG_IFMTU = 26, // Interface MTU
|
|
|
|
DHCP_TAG_SUBNET_LOCAL = 27, // All Subnets are Local
|
|
|
|
DHCP_TAG_BROADCAST = 28, // Broadcast Address
|
|
|
|
DHCP_TAG_DISCOVER_MASK = 29, // Perform Mask Discovery
|
|
|
|
DHCP_TAG_SUPPLY_MASK = 30, // Mask Supplier
|
|
|
|
DHCP_TAG_DISCOVER_ROUTE = 31, // Perform Router Discovery
|
|
|
|
DHCP_TAG_ROUTER_SOLICIT = 32, // Router Solicitation Address
|
|
|
|
DHCP_TAG_STATIC_ROUTE = 33, // Static Route
|
|
|
|
|
|
|
|
//
|
|
|
|
// Link Layer Parameters per Interface
|
|
|
|
//
|
|
|
|
DHCP_TAG_TRAILER = 34, // Trailer Encapsulation
|
|
|
|
DHCP_TAG_ARPAGE = 35, // ARP Cache Timeout
|
|
|
|
DHCP_TAG_ETHER_ENCAP = 36, // Ethernet Encapsulation
|
|
|
|
|
|
|
|
//
|
|
|
|
// TCP Parameters
|
|
|
|
//
|
|
|
|
DHCP_TAG_TCP_TTL = 37, // TCP Default TTL
|
|
|
|
DHCP_TAG_KEEP_INTERVAL = 38, // TCP Keepalive Interval
|
|
|
|
DHCP_TAG_KEEP_GARBAGE = 39, // TCP Keepalive Garbage
|
|
|
|
|
|
|
|
//
|
|
|
|
// Application and Service Parameters
|
|
|
|
//
|
|
|
|
DHCP_TAG_NIS_DOMAIN = 40, // Network Information Service Domain
|
|
|
|
DHCP_TAG_NIS_SERVER = 41, // Network Information Servers
|
|
|
|
DHCP_TAG_NTP_SERVER = 42, // Network Time Protocol Servers
|
|
|
|
DHCP_TAG_VENDOR = 43, // Vendor Specific Information
|
|
|
|
DHCP_TAG_NBNS = 44, // NetBIOS over TCP/IP Name Server
|
|
|
|
DHCP_TAG_NBDD = 45, // NetBIOS Datagram Distribution Server
|
|
|
|
DHCP_TAG_NBTYPE = 46, // NetBIOS over TCP/IP Node Type
|
|
|
|
DHCP_TAG_NBSCOPE = 47, // NetBIOS over TCP/IP Scope
|
|
|
|
DHCP_TAG_XFONT = 48, // X Window System Font Server
|
|
|
|
DHCP_TAG_XDM = 49, // X Window System Display Manager
|
|
|
|
DHCP_TAG_NISPLUS = 64, // Network Information Service+ Domain
|
|
|
|
DHCP_TAG_NISPLUS_SERVER = 65, // Network Information Service+ Servers
|
|
|
|
DHCP_TAG_MOBILEIP = 68, // Mobile IP Home Agent
|
|
|
|
DHCP_TAG_SMTP = 69, // Simple Mail Transport Protocol Server
|
|
|
|
DHCP_TAG_POP3 = 70, // Post Office Protocol (POP3) Server
|
|
|
|
DHCP_TAG_NNTP = 71, // Network News Transport Protocol Server
|
|
|
|
DHCP_TAG_WWW = 72, // Default World Wide Web (WWW) Server
|
|
|
|
DHCP_TAG_FINGER = 73, // Default Finger Server
|
|
|
|
DHCP_TAG_IRC = 74, // Default Internet Relay Chat (IRC) Server
|
|
|
|
DHCP_TAG_STTALK = 75, // StreetTalk Server
|
|
|
|
DHCP_TAG_STDA = 76, // StreetTalk Directory Assistance Server
|
|
|
|
DHCP_TAG_CLASSLESS_ROUTE = 121, // Classless Route
|
|
|
|
|
|
|
|
//
|
|
|
|
// DHCP Extensions
|
|
|
|
//
|
|
|
|
DHCP_TAG_REQUEST_IP = 50, // Requested IP Address
|
|
|
|
DHCP_TAG_LEASE = 51, // IP Address Lease Time
|
|
|
|
DHCP_TAG_OVERLOAD = 52, // Option Overload
|
|
|
|
DHCP_TAG_TFTP = 66, // TFTP server name
|
|
|
|
DHCP_TAG_BOOTFILE = 67, // Bootfile name
|
|
|
|
DHCP_TAG_TYPE = 53, // DHCP Message Type
|
|
|
|
DHCP_TAG_SERVER_ID = 54, // Server Identifier
|
|
|
|
DHCP_TAG_PARA_LIST = 55, // Parameter Request List
|
|
|
|
DHCP_TAG_MESSAGE = 56, // Message
|
|
|
|
DHCP_TAG_MAXMSG = 57, // Maximum DHCP Message Size
|
|
|
|
DHCP_TAG_T1 = 58, // Renewal (T1) Time Value
|
|
|
|
DHCP_TAG_T2 = 59, // Rebinding (T2) Time Value
|
|
|
|
DHCP_TAG_VENDOR_CLASS = 60, // Vendor class identifier
|
|
|
|
DHCP_TAG_CLIENT_ID = 61 // Client-identifier
|
2008-06-30 09:20:33 +02:00
|
|
|
} DHCP_TAGS;
|
2007-09-30 05:08:02 +02:00
|
|
|
|
2008-06-30 09:20:33 +02:00
|
|
|
#define DHCP_OPTION_MAGIC 0x63538263 // Network byte order
|
|
|
|
#define DHCP_MAX_OPTIONS 256
|
2007-09-30 05:08:02 +02:00
|
|
|
|
2008-06-30 09:20:33 +02:00
|
|
|
typedef enum {
|
2007-09-30 05:08:02 +02:00
|
|
|
//
|
|
|
|
// DHCP option types, this is used to validate the DHCP options.
|
|
|
|
//
|
|
|
|
DHCP_OPTION_SWITCH = 1,
|
|
|
|
DHCP_OPTION_INT8,
|
|
|
|
DHCP_OPTION_INT16,
|
|
|
|
DHCP_OPTION_INT32,
|
|
|
|
DHCP_OPTION_IP,
|
2008-06-30 09:20:33 +02:00
|
|
|
DHCP_OPTION_IPPAIR
|
|
|
|
} DHCP_OPTION_TYPE;
|
2007-09-30 05:08:02 +02:00
|
|
|
|
2008-06-30 09:20:33 +02:00
|
|
|
typedef enum {
|
2007-09-30 05:08:02 +02:00
|
|
|
//
|
|
|
|
// Value of DHCP overload option
|
|
|
|
//
|
|
|
|
DHCP_OVERLOAD_FILENAME = 1,
|
|
|
|
DHCP_OVERLOAD_SVRNAME = 2,
|
|
|
|
DHCP_OVERLOAD_BOTH = 3
|
2008-06-30 09:20:33 +02:00
|
|
|
} DHCP_OVERLOAD_TYPE;
|
2007-09-30 05:08:02 +02:00
|
|
|
|
2008-11-14 10:16:11 +01:00
|
|
|
///
|
|
|
|
/// The DHCP option structure. This structure extends the EFI_DHCP_OPTION
|
|
|
|
/// structure to support options longer than 255 bytes, such as classless route.
|
|
|
|
///
|
2007-09-30 05:08:02 +02:00
|
|
|
typedef struct {
|
|
|
|
UINT8 Tag;
|
|
|
|
UINT16 Len;
|
|
|
|
UINT8 *Data;
|
|
|
|
} DHCP_OPTION;
|
|
|
|
|
2008-11-14 10:16:11 +01:00
|
|
|
///
|
|
|
|
/// Structures used to parse the DHCP options with RFC3396 support.
|
|
|
|
///
|
2007-09-30 05:08:02 +02:00
|
|
|
typedef struct {
|
|
|
|
UINT8 Index;
|
|
|
|
UINT16 Offset;
|
|
|
|
} DHCP_OPTION_COUNT;
|
|
|
|
|
|
|
|
typedef struct {
|
|
|
|
DHCP_OPTION_COUNT *OpCount;
|
|
|
|
DHCP_OPTION *Options;
|
|
|
|
UINT8 *Buf;
|
|
|
|
} DHCP_OPTION_CONTEXT;
|
|
|
|
|
2008-11-14 10:16:11 +01:00
|
|
|
///
|
|
|
|
/// The options that matters to DHCP driver itself. The user of
|
|
|
|
/// DHCP clients may be interested in other options, such as
|
|
|
|
/// classless route, who can parse the DHCP offer to get them.
|
|
|
|
///
|
2007-09-30 05:08:02 +02:00
|
|
|
typedef struct {
|
|
|
|
IP4_ADDR NetMask; // DHCP_TAG_NETMASK
|
|
|
|
IP4_ADDR Router; // DHCP_TAG_ROUTER, only the first router is used
|
|
|
|
|
|
|
|
//
|
|
|
|
// DHCP specific options
|
|
|
|
//
|
|
|
|
UINT8 DhcpType; // DHCP_TAG_TYPE
|
|
|
|
UINT8 Overload; // DHCP_TAG_OVERLOAD
|
|
|
|
IP4_ADDR ServerId; // DHCP_TAG_SERVER_ID
|
|
|
|
UINT32 Lease; // DHCP_TAG_LEASE
|
|
|
|
UINT32 T1; // DHCP_TAG_T1
|
|
|
|
UINT32 T2; // DHCP_TAG_T2
|
|
|
|
} DHCP_PARAMETER;
|
|
|
|
|
2008-11-14 10:16:11 +01:00
|
|
|
///
|
|
|
|
/// Structure used to describe and validate the format of DHCP options.
|
|
|
|
/// Type is the options' data type, such as DHCP_OPTION_INT8. MinOccur
|
|
|
|
/// is the minium occurance of this data type. MaxOccur is defined
|
|
|
|
/// similarly. If MaxOccur is -1, it means that there is no limit on the
|
|
|
|
/// maximum occurance. Alert tells whether DHCP client should further
|
|
|
|
/// inspect the option to parse DHCP_PARAMETER.
|
|
|
|
///
|
2007-09-30 05:08:02 +02:00
|
|
|
typedef struct {
|
|
|
|
UINT8 Tag;
|
|
|
|
INTN Type;
|
|
|
|
INTN MinOccur;
|
|
|
|
INTN MaxOccur;
|
|
|
|
BOOLEAN Alert;
|
|
|
|
} DHCP_OPTION_FORMAT;
|
|
|
|
|
|
|
|
typedef
|
|
|
|
EFI_STATUS
|
|
|
|
(*DHCP_CHECK_OPTION) (
|
|
|
|
IN UINT8 Tag,
|
|
|
|
IN UINT8 Len,
|
|
|
|
IN UINT8 *Data,
|
|
|
|
IN VOID *Context
|
|
|
|
);
|
|
|
|
|
2008-06-30 09:20:33 +02:00
|
|
|
/**
|
|
|
|
Iterate through a DHCP message to visit each option. First inspect
|
|
|
|
all the options in the OPTION field. Then if overloaded, inspect
|
|
|
|
the options in FILENAME and SERVERNAME fields. One option may be
|
|
|
|
encoded in several places. See RFC 3396 Encoding Long Options in DHCP
|
|
|
|
|
2009-01-16 01:09:52 +01:00
|
|
|
@param[in] Packet The DHCP packet to check the options for
|
|
|
|
@param[in] Check The callback function to be called for each option
|
|
|
|
found
|
|
|
|
@param[in] Context The opaque parameter for Check
|
2008-06-30 09:20:33 +02:00
|
|
|
|
|
|
|
@retval EFI_SUCCESS The DHCP packet's options are well formated
|
2008-11-18 15:30:46 +01:00
|
|
|
@retval EFI_INVALID_PARAMETER The DHCP packet's options are not well formated
|
2008-06-30 09:20:33 +02:00
|
|
|
|
|
|
|
**/
|
2007-09-30 05:08:02 +02:00
|
|
|
EFI_STATUS
|
|
|
|
DhcpIterateOptions (
|
|
|
|
IN EFI_DHCP4_PACKET *Packet,
|
2009-01-16 01:16:17 +01:00
|
|
|
IN DHCP_CHECK_OPTION Check OPTIONAL,
|
2007-09-30 05:08:02 +02:00
|
|
|
IN VOID *Context
|
|
|
|
);
|
|
|
|
|
2008-06-30 09:20:33 +02:00
|
|
|
/**
|
|
|
|
Validate the packet's options. If necessary, allocate
|
|
|
|
and fill in the interested parameters.
|
|
|
|
|
2009-01-16 01:09:52 +01:00
|
|
|
@param[in] Packet The packet to validate the options
|
|
|
|
@param[out] Para The variable to save the DHCP parameters.
|
2008-06-30 09:20:33 +02:00
|
|
|
|
|
|
|
@retval EFI_OUT_OF_RESOURCES Failed to allocate memory to validate the packet.
|
|
|
|
@retval EFI_INVALID_PARAMETER The options are mal-formated
|
|
|
|
@retval EFI_SUCCESS The options are parsed into OptionPoint
|
|
|
|
|
|
|
|
**/
|
2007-09-30 05:08:02 +02:00
|
|
|
EFI_STATUS
|
|
|
|
DhcpValidateOptions (
|
|
|
|
IN EFI_DHCP4_PACKET *Packet,
|
2008-11-18 15:30:46 +01:00
|
|
|
OUT DHCP_PARAMETER **Para OPTIONAL
|
2007-09-30 05:08:02 +02:00
|
|
|
);
|
|
|
|
|
2008-06-30 09:20:33 +02:00
|
|
|
/**
|
|
|
|
Parse the options of a DHCP packet. It supports RFC 3396: Encoding
|
|
|
|
Long Options in DHCP. That is, it will combine all the option value
|
|
|
|
of all the occurances of each option.
|
|
|
|
A little bit of implemenation:
|
|
|
|
It adopts the "Key indexed counting" algorithm. First, it allocates
|
|
|
|
an array of 256 DHCP_OPTION_COUNTs because DHCP option tag is encoded
|
|
|
|
as a UINT8. It then iterates the DHCP packet to get data length of
|
|
|
|
each option by calling DhcpIterOptions with DhcpGetOptionLen. Now, it
|
|
|
|
knows the number of present options and their length. It allocates a
|
2008-11-18 15:30:46 +01:00
|
|
|
array of DHCP_OPTION and a continuous buffer after the array to put
|
2008-06-30 09:20:33 +02:00
|
|
|
all the options' data. Each option's data is pointed to by the Data
|
|
|
|
field in DHCP_OPTION structure. At last, it call DhcpIterateOptions
|
|
|
|
with DhcpFillOption to fill each option's data to its position in the
|
|
|
|
buffer.
|
|
|
|
|
2009-01-16 01:09:52 +01:00
|
|
|
@param[in] Packet The DHCP packet to parse the options
|
|
|
|
@param[out] Count The number of valid dhcp options present in the
|
|
|
|
packet
|
|
|
|
@param[out] OptionPoint The array that contains the DHCP options. Caller
|
|
|
|
should free it.
|
2008-06-30 09:20:33 +02:00
|
|
|
|
|
|
|
@retval EFI_OUT_OF_RESOURCES Failed to allocate memory to parse the packet.
|
|
|
|
@retval EFI_INVALID_PARAMETER The options are mal-formated
|
|
|
|
@retval EFI_SUCCESS The options are parsed into OptionPoint
|
|
|
|
|
|
|
|
**/
|
2007-09-30 05:08:02 +02:00
|
|
|
EFI_STATUS
|
|
|
|
DhcpParseOption (
|
|
|
|
IN EFI_DHCP4_PACKET *Packet,
|
|
|
|
OUT INTN *Count,
|
|
|
|
OUT DHCP_OPTION **OptionPoint
|
|
|
|
);
|
|
|
|
|
2008-06-30 09:20:33 +02:00
|
|
|
/**
|
|
|
|
Append an option to the memory, if the option is longer than
|
|
|
|
255 bytes, splits it into several options.
|
|
|
|
|
2009-01-16 01:09:52 +01:00
|
|
|
@param[out] Buf The buffer to append the option to
|
|
|
|
@param[in] Tag The option's tag
|
|
|
|
@param[in] DataLen The length of the option's data
|
|
|
|
@param[in] Data The option's data
|
2008-06-30 09:20:33 +02:00
|
|
|
|
|
|
|
@return The position to append the next option
|
|
|
|
|
|
|
|
**/
|
2007-09-30 05:08:02 +02:00
|
|
|
UINT8 *
|
|
|
|
DhcpAppendOption (
|
2008-11-18 15:30:46 +01:00
|
|
|
OUT UINT8 *Buf,
|
|
|
|
IN UINT8 Tag,
|
|
|
|
IN UINT16 DataLen,
|
|
|
|
IN UINT8 *Data
|
2007-09-30 05:08:02 +02:00
|
|
|
);
|
|
|
|
|
2008-06-30 09:20:33 +02:00
|
|
|
/**
|
|
|
|
Build a new DHCP packet from a seed packet. Options may be deleted or
|
|
|
|
appended. The caller should free the NewPacket when finished using it.
|
|
|
|
|
2009-01-16 01:09:52 +01:00
|
|
|
@param[in] SeedPacket The seed packet to start with
|
|
|
|
@param[in] DeleteCount The number of options to delete
|
|
|
|
@param[in] DeleteList The options to delete from the packet
|
|
|
|
@param[in] AppendCount The number of options to append
|
|
|
|
@param[in] AppendList The options to append to the packet
|
|
|
|
@param[out] NewPacket The new packet, allocated and built by this
|
|
|
|
function.
|
2008-06-30 09:20:33 +02:00
|
|
|
|
|
|
|
@retval EFI_OUT_OF_RESOURCES Failed to allocate memory
|
2008-11-18 15:30:46 +01:00
|
|
|
@retval EFI_INVALID_PARAMETER The options in SeekPacket are mal-formated
|
2008-06-30 09:20:33 +02:00
|
|
|
@retval EFI_SUCCESS The packet is build.
|
|
|
|
|
|
|
|
**/
|
2007-09-30 05:08:02 +02:00
|
|
|
EFI_STATUS
|
|
|
|
DhcpBuild (
|
2008-11-18 15:30:46 +01:00
|
|
|
IN EFI_DHCP4_PACKET *SeedPacket,
|
|
|
|
IN UINT32 DeleteCount,
|
|
|
|
IN UINT8 *DeleteList OPTIONAL,
|
|
|
|
IN UINT32 AppendCount,
|
|
|
|
IN EFI_DHCP4_PACKET_OPTION *AppendList[] OPTIONAL,
|
|
|
|
OUT EFI_DHCP4_PACKET **NewPacket
|
2007-09-30 05:08:02 +02:00
|
|
|
);
|
|
|
|
|
|
|
|
#endif
|