From 16ea5aa7a2e5f326f8ff129e740a19bb3fb7829f Mon Sep 17 00:00:00 2001 From: Dean Camera Date: Wed, 3 Feb 2010 10:39:33 +0000 Subject: Add a TELNET server to the webserver project, which currently can list active TCP connections. --- Projects/Webserver/Lib/DHCPClientApp.h | 166 +++++++++++++++++++++++++++++++++ 1 file changed, 166 insertions(+) create mode 100644 Projects/Webserver/Lib/DHCPClientApp.h (limited to 'Projects/Webserver/Lib/DHCPClientApp.h') diff --git a/Projects/Webserver/Lib/DHCPClientApp.h b/Projects/Webserver/Lib/DHCPClientApp.h new file mode 100644 index 000000000..947151d0b --- /dev/null +++ b/Projects/Webserver/Lib/DHCPClientApp.h @@ -0,0 +1,166 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2010. + + dean [at] fourwalledcubicle [dot] com + www.fourwalledcubicle.com +*/ + +/* + Copyright 2010 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 disclaim 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 DHCPClientApp.c. + */ + +#ifndef _DHCPCLIENT_APP_H_ +#define _DHCPCLIENT_APP_H_ + + /* Includes: */ + #include + + #include + + #include "../Webserver.h" + + /* Macros: */ + /** UDP listen port for a BOOTP server */ + #define DHCPC_SERVER_PORT 67 + + /** UDP listen port for a BOOTP client */ + #define DHCPC_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; + + /* Enums: */ + /** States for each DHCP connection to a DHCP client. */ + enum DHCP_States_t + { + DHCP_STATE_SendDiscover, /**< Send DISCOVER packet to retrieve DHCP lease offers */ + DHCP_STATE_WaitForOffer, /**< Waiting for OFFER packet giving available DHCP leases */ + DHCP_STATE_SendRequest, /**< Send REQUEST packet to request a DHCP lease */ + DHCP_STATE_WaitForACK, /**< Wait for ACK packet to complete the DHCP lease */ + DHCP_STATE_AddressLeased, /**< DHCP address has been leased from a DHCP server */ + }; + + /* Function Prototypes: */ + void DHCPClientApp_Init(void); + void DHCPClientApp_Callback(void); + + uint16_t DHCPClientApp_FillDHCPHeader(DHCP_Header_t* DHCPHeader, uint8_t DHCPMessageType, uip_udp_appstate_t* AppState); + uint8_t DHCPClientApp_SetOption(uint8_t* DHCPOptionList, uint8_t Option, uint8_t DataLen, void* OptionData); + bool DHCPClientApp_GetOption(uint8_t* DHCPOptionList, uint8_t Option, void* Destination); + +#endif -- cgit v1.2.3