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Diffstat (limited to 'Projects/Webserver/Lib/DHCPCommon.h')
| -rw-r--r-- | Projects/Webserver/Lib/DHCPCommon.h | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/Projects/Webserver/Lib/DHCPCommon.h b/Projects/Webserver/Lib/DHCPCommon.h new file mode 100644 index 0000000000..8f54c16717 --- /dev/null +++ b/Projects/Webserver/Lib/DHCPCommon.h @@ -0,0 +1,159 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2017. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com) + + Permission to use, copy, modify, distribute, and sell this + software and its documentation for any purpose is hereby granted + without fee, provided that the above copyright notice appear in + all copies and that both that the copyright notice and this + permission notice and warranty disclaimer appear in supporting + documentation, and that the name of the author not be used in + advertising or publicity pertaining to distribution of the + software without specific, written prior permission. + + The author disclaims all warranties with regard to this + software, including all implied warranties of merchantability + and fitness. In no event shall the author be liable for any + special, 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. +*/ + +/** \file + * + * Header file for common DHCP defines. + */ + +#ifndef _DHCP_COMMON_H_ +#define _DHCP_COMMON_H_ + + /* Includes: */ + #include <stdint.h> + #include <stdbool.h> + #include <string.h> + + #include "Config/AppConfig.h" + + #include <uip.h> + + /* Macros: */ + /** UDP listen port for a BOOTP server. */ + #define DHCP_SERVER_PORT 67 + + /** UDP listen port for a BOOTP client. */ + #define DHCP_CLIENT_PORT 68 + + /** BOOTP message type for a BOOTP REQUEST message. */ + #define DHCP_OP_BOOTREQUEST 0x01 + + /** BOOTP message type for a BOOTP REPLY message. */ + #define DHCP_OP_BOOTREPLY 0x02 + + /** BOOTP flag for a BOOTP broadcast message. */ + #define BOOTP_BROADCAST 0x8000 + + /** Magic DHCP cookie for a BOOTP message to identify it as a DHCP message. */ + #define DHCP_MAGIC_COOKIE 0x63538263 + + /** Unique transaction ID used to identify DHCP responses to the client. */ + #define DHCP_TRANSACTION_ID 0x13245466 + + /** DHCP message type for a DISCOVER message. */ + #define DHCP_DISCOVER 1 + + /** DHCP message type for an OFFER message. */ + #define DHCP_OFFER 2 + + /** DHCP message type for a REQUEST message. */ + #define DHCP_REQUEST 3 + + /** DHCP message type for a DECLINE message. */ + #define DHCP_DECLINE 4 + + /** DHCP message type for an ACK message. */ + #define DHCP_ACK 5 + + /** DHCP message type for a NAK message. */ + #define DHCP_NAK 6 + + /** DHCP message type for a RELEASE message. */ + #define DHCP_RELEASE 7 + + /** DHCP medium type for standard Ethernet. */ + #define DHCP_HTYPE_ETHERNET 1 + + /** DHCP message option for the network subnet mask. */ + #define DHCP_OPTION_SUBNET_MASK 1 + + /** DHCP message option for the network gateway IP. */ + #define DHCP_OPTION_ROUTER 3 + + /** DHCP message option for the network DNS server. */ + #define DHCP_OPTION_DNS_SERVER 6 + + /** DHCP message option for the requested client IP address. */ + #define DHCP_OPTION_REQ_IPADDR 50 + + /** DHCP message option for the IP address lease time. */ + #define DHCP_OPTION_LEASE_TIME 51 + + /** DHCP message option for the DHCP message type. */ + #define DHCP_OPTION_MSG_TYPE 53 + + /** DHCP message option for the DHCP server IP. */ + #define DHCP_OPTION_SERVER_ID 54 + + /** DHCP message option for the list of required options from the server. */ + #define DHCP_OPTION_REQ_LIST 55 + + /** DHCP message option for the options list terminator. */ + #define DHCP_OPTION_END 255 + + /* Type Defines: */ + /** Type define for a DHCP packet inside an Ethernet frame. */ + typedef struct + { + uint8_t Operation; /**< DHCP operation, either DHCP_OP_BOOTREQUEST or DHCP_OP_BOOTREPLY */ + uint8_t HardwareType; /**< Hardware carrier type constant */ + uint8_t HardwareAddressLength; /**< Length in bytes of a hardware (MAC) address on the network */ + uint8_t Hops; /**< Number of hops required to reach the server, unused */ + + uint32_t TransactionID; /**< Unique ID of the DHCP packet, for positive matching between sent and received packets */ + + uint16_t ElapsedSeconds; /**< Elapsed seconds since the request was made */ + uint16_t Flags; /**< BOOTP packet flags */ + + uip_ipaddr_t ClientIP; /**< Client IP address, if already leased an IP */ + uip_ipaddr_t YourIP; /**< Client IP address */ + uip_ipaddr_t NextServerIP; /**< Legacy BOOTP protocol field, unused for DHCP */ + uip_ipaddr_t RelayAgentIP; /**< Legacy BOOTP protocol field, unused for DHCP */ + + uint8_t ClientHardwareAddress[16]; /**< Hardware (MAC) address of the client making a request to the DHCP server */ + uint8_t ServerHostnameString[64]; /**< Legacy BOOTP protocol field, unused for DHCP */ + uint8_t BootFileName[128]; /**< Legacy BOOTP protocol field, unused for DHCP */ + + uint32_t Cookie; /**< Magic BOOTP protocol cookie to indicate a valid packet */ + + uint8_t Options[]; /**< DHCP message options */ + } DHCP_Header_t; + + /* Function Prototypes: */ + uint8_t DHCPCommon_SetOption(uint8_t* DHCPOptionList, + const uint8_t Option, + const uint8_t DataLen, + void* const OptionData); + bool DHCPCommon_GetOption(const uint8_t* DHCPOptionList, + const uint8_t Option, + void* const Destination); + +#endif + |