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Add RNDIS Device support to the Webserver project, so that the files stored on the device can be viewed from a web-browser while the board is plugged into a host machine.

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This commit is contained in:
Dean Camera 2011-05-22 08:28:40 +00:00
parent e349974aa9
commit 3cba88e4c0
27 changed files with 939 additions and 251 deletions
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87
Projects/Webserver/Lib/DHCPClientApp.c
View file

@ -43,13 +43,13 @@
void DHCPClientApp_Init(void)
{
/* Create a new UDP connection to the DHCP server port for the DHCP solicitation */
struct uip_udp_conn* Connection = uip_udp_new(&uip_broadcast_addr, HTONS(DHCPC_SERVER_PORT));
struct uip_udp_conn* Connection = uip_udp_new(&uip_broadcast_addr, HTONS(DHCP_SERVER_PORT));
/* If the connection was successfully created, bind it to the local DHCP client port */
if (Connection != NULL)
{
uip_udp_appstate_t* const AppState = &Connection->appstate;
uip_udp_bind(Connection, HTONS(DHCPC_CLIENT_PORT));
uip_udp_bind(Connection, HTONS(DHCP_CLIENT_PORT));
/* Set the initial client state */
AppState->DHCPClient.CurrentState = DHCP_STATE_SendDiscover;
@ -80,8 +80,8 @@ void DHCPClientApp_Callback(void)
/* Add the required DHCP options list to the packet */
uint8_t RequiredOptionList[] = {DHCP_OPTION_SUBNET_MASK, DHCP_OPTION_ROUTER, DHCP_OPTION_DNS_SERVER};
AppDataSize += DHCPClientApp_SetOption(AppData->Options, DHCP_OPTION_REQ_LIST, sizeof(RequiredOptionList),
RequiredOptionList);
AppDataSize += DHCPCommon_SetOption(AppData->Options, DHCP_OPTION_REQ_LIST, sizeof(RequiredOptionList),
RequiredOptionList);
/* Send the DHCP DISCOVER packet */
uip_udp_send(AppDataSize);
@ -103,14 +103,14 @@ void DHCPClientApp_Callback(void)
uint8_t OfferResponse_MessageType;
if ((AppData->TransactionID == DHCP_TRANSACTION_ID) &&
DHCPClientApp_GetOption(AppData->Options, DHCP_OPTION_MSG_TYPE, &OfferResponse_MessageType) &&
DHCPCommon_GetOption(AppData->Options, DHCP_OPTION_MSG_TYPE, &OfferResponse_MessageType) &&
(OfferResponse_MessageType == DHCP_OFFER))
{
/* Received a DHCP offer for an IP address, copy over values for later request */
memcpy(&AppState->DHCPClient.DHCPOffer_Data.AllocatedIP, &AppData->YourIP, sizeof(uip_ipaddr_t));
DHCPClientApp_GetOption(AppData->Options, DHCP_OPTION_SUBNET_MASK, &AppState->DHCPClient.DHCPOffer_Data.Netmask);
DHCPClientApp_GetOption(AppData->Options, DHCP_OPTION_ROUTER, &AppState->DHCPClient.DHCPOffer_Data.GatewayIP);
DHCPClientApp_GetOption(AppData->Options, DHCP_OPTION_SERVER_ID, &AppState->DHCPClient.DHCPOffer_Data.ServerIP);
DHCPCommon_GetOption(AppData->Options, DHCP_OPTION_SUBNET_MASK, &AppState->DHCPClient.DHCPOffer_Data.Netmask);
DHCPCommon_GetOption(AppData->Options, DHCP_OPTION_ROUTER, &AppState->DHCPClient.DHCPOffer_Data.GatewayIP);
DHCPCommon_GetOption(AppData->Options, DHCP_OPTION_SERVER_ID, &AppState->DHCPClient.DHCPOffer_Data.ServerIP);
timer_reset(&AppState->DHCPClient.Timeout);
AppState->DHCPClient.CurrentState = DHCP_STATE_SendRequest;
@ -122,12 +122,12 @@ void DHCPClientApp_Callback(void)
AppDataSize += DHCPClientApp_FillDHCPHeader(AppData, DHCP_REQUEST, AppState);
/* Add the DHCP REQUESTED IP ADDRESS option to the packet */
AppDataSize += DHCPClientApp_SetOption(AppData->Options, DHCP_OPTION_REQ_IPADDR, sizeof(uip_ipaddr_t),
&AppState->DHCPClient.DHCPOffer_Data.AllocatedIP);
AppDataSize += DHCPCommon_SetOption(AppData->Options, DHCP_OPTION_REQ_IPADDR, sizeof(uip_ipaddr_t),
&AppState->DHCPClient.DHCPOffer_Data.AllocatedIP);
/* Add the DHCP SERVER IP ADDRESS option to the packet */
AppDataSize += DHCPClientApp_SetOption(AppData->Options, DHCP_OPTION_SERVER_ID, sizeof(uip_ipaddr_t),
&AppState->DHCPClient.DHCPOffer_Data.ServerIP);
AppDataSize += DHCPCommon_SetOption(AppData->Options, DHCP_OPTION_SERVER_ID, sizeof(uip_ipaddr_t),
&AppState->DHCPClient.DHCPOffer_Data.ServerIP);
/* Send the DHCP REQUEST packet */
uip_udp_send(AppDataSize);
@ -149,7 +149,7 @@ void DHCPClientApp_Callback(void)
uint8_t RequestResponse_MessageType;
if ((AppData->TransactionID == DHCP_TRANSACTION_ID) &&
DHCPClientApp_GetOption(AppData->Options, DHCP_OPTION_MSG_TYPE, &RequestResponse_MessageType) &&
DHCPCommon_GetOption(AppData->Options, DHCP_OPTION_MSG_TYPE, &RequestResponse_MessageType) &&
(RequestResponse_MessageType == DHCP_ACK))
{
/* Set the new network parameters from the DHCP server */
@ -207,66 +207,5 @@ static uint16_t DHCPClientApp_FillDHCPHeader(DHCP_Header_t* const DHCPHeader,
return (sizeof(DHCP_Header_t) + 4);
}
/** Sets the given DHCP option in the DHCP packet's option list. This automatically moves the
* end of options terminator past the new option in the options list.
*
* \param[in,out] DHCPOptionList Pointer to the start of the DHCP packet's options list
* \param[in] Option DHCP option to add to the list
* \param[in] DataLen Size in bytes of the option data to add
* \param[in] OptionData Buffer where the option's data is to be sourced from
*
* \return Number of bytes added to the DHCP packet
*/
static uint8_t DHCPClientApp_SetOption(uint8_t* DHCPOptionList,
const uint8_t Option,
const uint8_t DataLen,
void* const OptionData)
{
/* Skip through the DHCP options list until the terminator option is found */
while (*DHCPOptionList != DHCP_OPTION_END)
DHCPOptionList += (DHCPOptionList[1] + 2);
/* Overwrite the existing terminator with the new option, add a new terminator at the end of the list */
DHCPOptionList[0] = Option;
DHCPOptionList[1] = DataLen;
memcpy(&DHCPOptionList[2], OptionData, DataLen);
DHCPOptionList[2 + DataLen] = DHCP_OPTION_END;
/* Calculate the total number of bytes added to the outgoing packet */
return (2 + DataLen);
}
/** Retrieves the given option's data (if present) from the DHCP packet's options list.
*
* \param[in,out] DHCPOptionList Pointer to the start of the DHCP packet's options list
* \param[in] Option DHCP option to retrieve to the list
* \param[out] Destination Buffer where the option's data is to be written to if found
*
* \return Boolean true if the option was found in the DHCP packet's options list, false otherwise
*/
static bool DHCPClientApp_GetOption(const uint8_t* DHCPOptionList,
const uint8_t Option,
void* const Destination)
{
/* Look through the incoming DHCP packet's options list for the requested option */
while (*DHCPOptionList != DHCP_OPTION_END)
{
/* Check if the current DHCP option in the packet is the one requested */
if (DHCPOptionList[0] == Option)
{
/* Copy request option's data to the destination buffer */
memcpy(Destination, &DHCPOptionList[2], DHCPOptionList[1]);
/* Indicate that the requested option data was successfully retrieved */
return true;
}
/* Skip to next DHCP option in the options list */
DHCPOptionList += (DHCPOptionList[1] + 2);
}
/* Requested option not found in the incoming packet's DHCP options list */
return false;
}
#endif

111
Projects/Webserver/Lib/DHCPClientApp.h
View file

@ -42,111 +42,11 @@
#include <uip.h>
#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;
#include "DHCPCommon.h"
/* Enums: */
/** States for each DHCP connection to a DHCP client. */
enum DHCP_States_t
enum DHCP_Client_States_t
{
DHCP_STATE_SendDiscover, /**< Send DISCOVER packet to retrieve DHCP lease offers */
DHCP_STATE_WaitForOffer, /**< Waiting for OFFER packet giving available DHCP leases */
@ -163,13 +63,6 @@
static uint16_t DHCPClientApp_FillDHCPHeader(DHCP_Header_t* const DHCPHeader,
const uint8_t DHCPMessageType,
uip_udp_appstate_t* const AppState);
static uint8_t DHCPClientApp_SetOption(uint8_t* DHCPOptionList,
const uint8_t Option,
const uint8_t DataLen,
void* const OptionData);
static bool DHCPClientApp_GetOption(const uint8_t* DHCPOptionList,
const uint8_t Option,
void* const Destination);
#endif
#endif

102
Projects/Webserver/Lib/DHCPCommon.c Normal file
View file

@ -0,0 +1,102 @@
/*
LUFA Library
Copyright (C) Dean Camera, 2011.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2011 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.
*/
#if defined(ENABLE_DHCP_CLIENT) || defined(ENABLE_DHCP_SERVER) || defined(__DOXYGEN__)
/** \file
*
* Common DHCP routines to manage DHCP packet data.
*/
#include "DHCPCommon.h"
/** Sets the given DHCP option in the DHCP packet's option list. This automatically moves the
* end of options terminator past the new option in the options list.
*
* \param[in,out] DHCPOptionList Pointer to the start of the DHCP packet's options list
* \param[in] Option DHCP option to add to the list
* \param[in] DataLen Size in bytes of the option data to add
* \param[in] OptionData Buffer where the option's data is to be sourced from
*
* \return Number of bytes added to the DHCP packet
*/
uint8_t DHCPCommon_SetOption(uint8_t* DHCPOptionList,
const uint8_t Option,
const uint8_t DataLen,
void* const OptionData)
{
/* Skip through the DHCP options list until the terminator option is found */
while (*DHCPOptionList != DHCP_OPTION_END)
DHCPOptionList += (DHCPOptionList[1] + 2);
/* Overwrite the existing terminator with the new option, add a new terminator at the end of the list */
DHCPOptionList[0] = Option;
DHCPOptionList[1] = DataLen;
memcpy(&DHCPOptionList[2], OptionData, DataLen);
DHCPOptionList[2 + DataLen] = DHCP_OPTION_END;
/* Calculate the total number of bytes added to the outgoing packet */
return (2 + DataLen);
}
/** Retrieves the given option's data (if present) from the DHCP packet's options list.
*
* \param[in,out] DHCPOptionList Pointer to the start of the DHCP packet's options list
* \param[in] Option DHCP option to retrieve to the list
* \param[out] Destination Buffer where the option's data is to be written to if found
*
* \return Boolean true if the option was found in the DHCP packet's options list, false otherwise
*/
bool DHCPCommon_GetOption(const uint8_t* DHCPOptionList,
const uint8_t Option,
void* const Destination)
{
/* Look through the incoming DHCP packet's options list for the requested option */
while (*DHCPOptionList != DHCP_OPTION_END)
{
/* Check if the current DHCP option in the packet is the one requested */
if (DHCPOptionList[0] == Option)
{
/* Copy request option's data to the destination buffer */
memcpy(Destination, &DHCPOptionList[2], DHCPOptionList[1]);
/* Indicate that the requested option data was successfully retrieved */
return true;
}
/* Skip to next DHCP option in the options list */
DHCPOptionList += (DHCPOptionList[1] + 2);
}
/* Requested option not found in the incoming packet's DHCP options list */
return false;
}
#endif

157
Projects/Webserver/Lib/DHCPCommon.h Normal file
View file

@ -0,0 +1,157 @@
/*
LUFA Library
Copyright (C) Dean Camera, 2011.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2011 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 common DHCP defines.
*/
#ifndef _DHCP_COMMON_H_
#define _DHCP_COMMON_H_
/* Includes: */
#include <stdint.h>
#include <stdbool.h>
#include <string.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

237
Projects/Webserver/Lib/DHCPServerApp.c Normal file
View file

@ -0,0 +1,237 @@
/*
LUFA Library
Copyright (C) Dean Camera, 2011.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2011 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.
*/
#if defined(ENABLE_DHCP_SERVER) || defined(__DOXYGEN__)
/** \file
*
* DHCP Server Application. When connected to the uIP stack, this will send IP configuration settings to a
* DHCP client on the network.
*/
#define INCLUDE_FROM_DHCPSERVERAPP_C
#include "DHCPServerApp.h"
struct uip_conn* BroadcastConnection;
uint8_t LeasedIPs[255 / 8];
/** Initialization function for the DHCP server. */
void DHCPServerApp_Init(void)
{
/* Listen on port 67 for DHCP server connections from hosts */
uip_listen(HTONS(DHCP_SERVER_PORT));
/* Create a new UDP connection to the DHCP server port for the DHCP solicitation */
struct uip_udp_conn* BroadcastConnection = uip_udp_new(&uip_broadcast_addr, HTONS(DHCP_CLIENT_PORT));
/* If the connection was successfully created, bind it to the local DHCP client port */
if (BroadcastConnection != NULL)
uip_udp_bind(BroadcastConnection, HTONS(DHCP_SERVER_PORT));
/* Set all IP addresses as unleased */
memset(LeasedIPs, 0x00, sizeof(LeasedIPs));
}
/** uIP stack application callback for the DHCP server. This function must be called each time the TCP/IP stack
* needs a UDP packet to be processed.
*/
void DHCPServerApp_Callback(void)
{
DHCP_Header_t* const AppData = (DHCP_Header_t*)uip_appdata;
uint16_t AppDataSize = 0;
uint8_t DHCPMessageType;
if (!(DHCPCommon_GetOption(AppData->Options, DHCP_OPTION_MSG_TYPE, &DHCPMessageType)))
return;
uip_ipaddr_t Netmask, GatewayIPAddress;
struct uip_eth_addr RemoteMACAddress;
uint32_t TransactionID;
memcpy(&RemoteMACAddress, &AppData->ClientHardwareAddress, sizeof(struct uip_eth_addr));
uip_getnetmask(&Netmask);
uip_getdraddr(&GatewayIPAddress);
TransactionID = AppData->TransactionID;
switch (DHCPMessageType)
{
case DHCP_DISCOVER:
AppDataSize += DHCPServerApp_FillDHCPHeader(AppData, DHCP_OFFER, &RemoteMACAddress, TransactionID);
AppDataSize += DHCPCommon_SetOption(AppData->Options, DHCP_OPTION_SUBNET_MASK,
sizeof(uip_ipaddr_t), &Netmask);
AppDataSize += DHCPCommon_SetOption(AppData->Options, DHCP_OPTION_ROUTER,
sizeof(uip_ipaddr_t), &GatewayIPAddress);
/* Send the DHCP OFFER packet */
uip_poll_conn(BroadcastConnection);
memcpy(&uip_udp_conn->ripaddr, &uip_broadcast_addr, sizeof(uip_ipaddr_t));
uip_udp_send(AppDataSize);
break;
case DHCP_REQUEST:
if (!(DHCPServerApp_CheckIfIPLeased(&AppData->YourIP)))
{
AppDataSize += DHCPServerApp_FillDHCPHeader(AppData, DHCP_ACK, &RemoteMACAddress, TransactionID);
AppDataSize += DHCPCommon_SetOption(AppData->Options, DHCP_OPTION_SUBNET_MASK,
sizeof(uip_ipaddr_t), &Netmask);
AppDataSize += DHCPCommon_SetOption(AppData->Options, DHCP_OPTION_ROUTER,
sizeof(uip_ipaddr_t), &GatewayIPAddress);
DHCPServerApp_LeaseIP(&AppData->YourIP);
}
else
{
AppDataSize += DHCPServerApp_FillDHCPHeader(AppData, DHCP_NAK, &RemoteMACAddress, TransactionID);
}
/* Send the DHCP ACK or NAK packet */
uip_poll_conn(BroadcastConnection);
memcpy(&uip_udp_conn->ripaddr, &uip_broadcast_addr, sizeof(uip_ipaddr_t));
uip_udp_send(AppDataSize);
break;
case DHCP_RELEASE:
/* Mark the IP address as released in the allocation table */
DHCPServerApp_UnleaseIP(&uip_udp_conn->ripaddr);
break;
}
}
/** Fills the DHCP packet response with the appropriate BOOTP header for DHCP. This fills out all the required
* fields, leaving only the additional DHCP options to be added to the packet before it is sent to the DHCP client.
*
* \param[out] DHCPHeader Location in the packet buffer where the BOOTP header should be written to
* \param[in] DHCPMessageType DHCP Message type, such as DHCP_DISCOVER
* \param[in] ClientHardwareAddress Client MAC address the created transaction should be directed to
* \param[in] TransactionID Transaction ID the created transaction should be associated with
*
* \return Size in bytes of the created DHCP packet
*/
static uint16_t DHCPServerApp_FillDHCPHeader(DHCP_Header_t* const DHCPHeader,
const uint8_t DHCPMessageType,
struct uip_eth_addr* ClientHardwareAddress,
uint32_t TransactionID)
{
/* Erase existing packet data so that we start will all 0x00 DHCP header data */
memset(DHCPHeader, 0, sizeof(DHCP_Header_t));
DHCPHeader->Operation = DHCPMessageType;
DHCPHeader->HardwareType = DHCP_HTYPE_ETHERNET;
DHCPHeader->HardwareAddressLength = sizeof(MACAddress);
DHCPHeader->Hops = 0;
DHCPHeader->TransactionID = TransactionID;
DHCPHeader->ElapsedSeconds = 0;
DHCPHeader->Flags = 0;
memcpy(&DHCPHeader->NextServerIP, &uip_hostaddr, sizeof(uip_ipaddr_t));
if (uip_ipaddr_cmp(&DHCPHeader->YourIP, &uip_all_zeroes_addr))
DHCPServerApp_GetUnleasedIP(&DHCPHeader->YourIP);
memcpy(&DHCPHeader->ClientHardwareAddress, ClientHardwareAddress, sizeof(struct uip_eth_addr));
DHCPHeader->Cookie = DHCP_MAGIC_COOKIE;
/* Add a DHCP message type and terminator options to the start of the DHCP options field */
DHCPHeader->Options[0] = DHCP_OPTION_MSG_TYPE;
DHCPHeader->Options[1] = 1;
DHCPHeader->Options[2] = DHCPMessageType;
DHCPHeader->Options[3] = DHCP_OPTION_END;
/* Calculate the total number of bytes added to the outgoing packet */
return (sizeof(DHCP_Header_t) + 4);
}
/** Checks to see if the nominated IP address has already been allocated to a client.
*
* \param[in] IPAddress IP Address whose lease status should be checked
*
* \pre The IP address must be within the same /24 subnet as the virtual webserver.
*
* \return Boolean true if the IP has already been leased to a client, false otherwise.
*/
static bool DHCPServerApp_CheckIfIPLeased(uip_ipaddr_t* IPAddress)
{
uint8_t Byte = (IPAddress->u8[3] / 8);
uint8_t Mask = (1 << (IPAddress->u8[3] % 8));
if (!(IPAddress->u8[3] == uip_hostaddr.u8[3]) && !(LeasedIPs[Byte] & Mask))
return false;
else
return true;
}
/** Retrieves the next unleased IP in the IP address pool.
*
* \param[out] NewIPAddress Location where the generated IP Address should be stored
*/
static void DHCPServerApp_GetUnleasedIP(uip_ipaddr_t* NewIPAddress)
{
uip_ipaddr_copy(NewIPAddress, &uip_hostaddr);
for (uint8_t IP = 1; IP < 254; IP++)
{
NewIPAddress->u8[3] = IP;
if (!(DHCPServerApp_CheckIfIPLeased(NewIPAddress)))
return;
}
}
/** Marks the given IP Address as leased in the address pool, so that it will not be
* allocated to another client unless it is first released.
*
* \param[in] IPAddress IP Address to mark as leased
*
* \pre The IP address must be within the same /24 subnet as the virtual webserver.
*/
static void DHCPServerApp_LeaseIP(uip_ipaddr_t* IPAddress)
{
uint8_t Byte = (IPAddress->u8[3] / 8);
uint8_t Mask = (1 << (IPAddress->u8[3] % 8));
LeasedIPs[Byte] |= Mask;
}
/** Marks the given IP Address as not leased in the address pool, so that it can be
* allocated to another client upon request.
*
* \param[in] IPAddress IP Address to mark as not leased
*
* \pre The IP address must be within the same /24 subnet as the virtual webserver.
*/
static void DHCPServerApp_UnleaseIP(uip_ipaddr_t* IPAddress)
{
uint8_t Byte = (IPAddress->u8[3] / 8);
uint8_t Mask = (1 << (IPAddress->u8[3] % 8));
LeasedIPs[Byte] &= ~Mask;
}
#endif

62
Projects/Webserver/Lib/DHCPServerApp.h Normal file
View file

@ -0,0 +1,62 @@
/*
LUFA Library
Copyright (C) Dean Camera, 2011.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2011 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 DHCPServerApp.c.
*/
#ifndef _DHCPSERVER_APP_H_
#define _DHCPSERVER_APP_H_
/* Includes: */
#include <stdio.h>
#include <uip.h>
#include "../Webserver.h"
#include "DHCPCommon.h"
/* Function Prototypes: */
void DHCPServerApp_Init(void);
void DHCPServerApp_Callback(void);
#if defined(INCLUDE_FROM_DHCPSERVERAPP_C)
static uint16_t DHCPServerApp_FillDHCPHeader(DHCP_Header_t* const DHCPHeader,
const uint8_t DHCPMessageType,
struct uip_eth_addr* ClientHardwareAddress,
uint32_t TransactionID);
static bool DHCPServerApp_CheckIfIPLeased(uip_ipaddr_t* IPAddress);
static void DHCPServerApp_GetUnleasedIP(uip_ipaddr_t* NewIPAddress);
static void DHCPServerApp_LeaseIP(uip_ipaddr_t* IPAddress);
static void DHCPServerApp_UnleaseIP(uip_ipaddr_t* IPAddress);
#endif
#endif

6
Projects/Webserver/Lib/HTTPServerApp.c
View file

@ -181,7 +181,7 @@ static void HTTPServerApp_OpenRequestedFile(void)
}
/* Copy over the requested filename */
strncpy(AppState->HTTPServer.FileName, &RequestedFileName[1], (sizeof(AppState->HTTPServer.FileName) - 1));
strncpy(AppState->HTTPServer.FileName, &RequestedFileName[1], sizeof(AppState->HTTPServer.FileName));
/* Ensure filename is null-terminated */
AppState->HTTPServer.FileName[sizeof(AppState->HTTPServer.FileName) - 1] = 0x00;
@ -190,11 +190,11 @@ static void HTTPServerApp_OpenRequestedFile(void)
uint8_t FileNameLen = strlen(AppState->HTTPServer.FileName);
/* If the URI is a directory, append the default filename */
if (AppState->HTTPServer.FileName[FileNameLen - 1] == '/')
if ((AppState->HTTPServer.FileName[FileNameLen - 1] == '/') || !(FileNameLen))
{
strncpy_P(&AppState->HTTPServer.FileName[FileNameLen], DefaultDirFileName,
(sizeof(AppState->HTTPServer.FileName) - FileNameLen));
/* Ensure altered filename is still null-terminated */
AppState->HTTPServer.FileName[sizeof(AppState->HTTPServer.FileName) - 1] = 0x00;
}

96
Projects/Webserver/Lib/uIPManagement.c
View file

@ -61,22 +61,49 @@ void uIPManagement_Init(void)
/* uIP Stack Initialization */
uip_init();
uip_arp_init();
uip_setethaddr(MACAddress);
/* DHCP/Server IP Settings Initialization */
#if defined(ENABLE_DHCP_CLIENT)
HaveIPConfiguration = false;
DHCPClientApp_Init();
#else
HaveIPConfiguration = true;
uip_ipaddr_t IPAddress, Netmask, GatewayIPAddress;
uip_ipaddr(&IPAddress, DEVICE_IP_ADDRESS[0], DEVICE_IP_ADDRESS[1], DEVICE_IP_ADDRESS[2], DEVICE_IP_ADDRESS[3]);
uip_ipaddr(&Netmask, DEVICE_NETMASK[0], DEVICE_NETMASK[1], DEVICE_NETMASK[2], DEVICE_NETMASK[3]);
uip_ipaddr(&GatewayIPAddress, DEVICE_GATEWAY[0], DEVICE_GATEWAY[1], DEVICE_GATEWAY[2], DEVICE_GATEWAY[3]);
uip_sethostaddr(&IPAddress);
uip_setnetmask(&Netmask);
uip_setdraddr(&GatewayIPAddress);
#endif
if (USB_CurrentMode == USB_MODE_Device)
{
MACAddress.addr[0] = SERVER_MAC_ADDRESS[0];
MACAddress.addr[1] = SERVER_MAC_ADDRESS[1];
MACAddress.addr[2] = SERVER_MAC_ADDRESS[2];
MACAddress.addr[3] = SERVER_MAC_ADDRESS[3];
MACAddress.addr[4] = SERVER_MAC_ADDRESS[4];
MACAddress.addr[5] = SERVER_MAC_ADDRESS[5];
#if defined(ENABLE_DHCP_SERVER)
DHCPServerApp_Init();
#endif
HaveIPConfiguration = true;
uip_ipaddr_t IPAddress, Netmask, GatewayIPAddress;
uip_ipaddr(&IPAddress, DEVICE_IP_ADDRESS[0], DEVICE_IP_ADDRESS[1], DEVICE_IP_ADDRESS[2], DEVICE_IP_ADDRESS[3]);
uip_ipaddr(&Netmask, DEVICE_NETMASK[0], DEVICE_NETMASK[1], DEVICE_NETMASK[2], DEVICE_NETMASK[3]);
uip_ipaddr(&GatewayIPAddress, DEVICE_GATEWAY[0], DEVICE_GATEWAY[1], DEVICE_GATEWAY[2], DEVICE_GATEWAY[3]);
uip_sethostaddr(&IPAddress);
uip_setnetmask(&Netmask);
uip_setdraddr(&GatewayIPAddress);
}
else
{
#if defined(ENABLE_DHCP_CLIENT)
HaveIPConfiguration = false;
DHCPClientApp_Init();
#else
HaveIPConfiguration = true;
uip_ipaddr_t IPAddress, Netmask, GatewayIPAddress;
uip_ipaddr(&IPAddress, DEVICE_IP_ADDRESS[0], DEVICE_IP_ADDRESS[1], DEVICE_IP_ADDRESS[2], DEVICE_IP_ADDRESS[3]);
uip_ipaddr(&Netmask, DEVICE_NETMASK[0], DEVICE_NETMASK[1], DEVICE_NETMASK[2], DEVICE_NETMASK[3]);
uip_ipaddr(&GatewayIPAddress, DEVICE_GATEWAY[0], DEVICE_GATEWAY[1], DEVICE_GATEWAY[2], DEVICE_GATEWAY[3]);
uip_sethostaddr(&IPAddress);
uip_setnetmask(&Netmask);
uip_setdraddr(&GatewayIPAddress);
#endif
}
/* Virtual Webserver Ethernet Address Configuration */
uip_setethaddr(MACAddress);
/* HTTP Webserver Initialization */
HTTPServerApp_Init();
@ -92,7 +119,8 @@ void uIPManagement_Init(void)
*/
void uIPManagement_ManageNetwork(void)
{
if ((USB_CurrentMode == USB_MODE_Host) && (USB_HostState == HOST_STATE_Configured))
if (((USB_CurrentMode == USB_MODE_Host) && (USB_HostState == HOST_STATE_Configured)) ||
((USB_CurrentMode == USB_MODE_Device) && (USB_DeviceState == DEVICE_STATE_Configured)))
{
uIPManagement_ProcessIncomingPacket();
uIPManagement_ManageConnections();
@ -126,24 +154,46 @@ void uIPManagement_UDPCallback(void)
/* Call the correct UDP application based on the port number the connection is listening on */
switch (uip_udp_conn->lport)
{
case HTONS(DHCPC_CLIENT_PORT):
#if defined(ENABLE_DHCP_CLIENT)
case HTONS(DHCP_CLIENT_PORT):
DHCPClientApp_Callback();
break;
#endif
#if defined(ENABLE_DHCP_SERVER)
case HTONS(DHCP_SERVER_PORT):
DHCPServerApp_Callback();
break;
#endif
}
}
/** Processes Incoming packets to the server from the connected RNDIS device, creating responses as needed. */
static void uIPManagement_ProcessIncomingPacket(void)
{
/* If no packet received, exit processing routine */
if (!(RNDIS_Host_IsPacketReceived(&Ethernet_RNDIS_Interface)))
return;
/* Determine which USB mode the system is currently initialised in */
if (USB_CurrentMode == USB_MODE_Device)
{
/* If no packet received, exit processing routine */
if (!(RNDIS_Device_IsPacketReceived(&Ethernet_RNDIS_Interface_Device)))
return;
LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
/* Read the Incoming packet straight into the UIP packet buffer */
RNDIS_Host_ReadPacket(&Ethernet_RNDIS_Interface, uip_buf, &uip_len);
/* Read the Incoming packet straight into the UIP packet buffer */
RNDIS_Device_ReadPacket(&Ethernet_RNDIS_Interface_Device, uip_buf, &uip_len);
}
else
{
/* If no packet received, exit processing routine */
if (!(RNDIS_Host_IsPacketReceived(&Ethernet_RNDIS_Interface_Host)))
return;
LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
/* Read the Incoming packet straight into the UIP packet buffer */
RNDIS_Host_ReadPacket(&Ethernet_RNDIS_Interface_Host, uip_buf, &uip_len);
}
/* If the packet contains an Ethernet frame, process it */
if (uip_len > 0)
{

11
Projects/Webserver/Lib/uIPManagement.h
View file

@ -45,12 +45,13 @@
#include <timer.h>
#include "Lib/DHCPClientApp.h"
#include "Lib/DHCPServerApp.h"
#include "Lib/HTTPServerApp.h"
#include "Lib/TELNETServerApp.h"
/* Macros: */
/** IP address that the webserver should use once connected to a RNDIS device (when DHCP is disabled). */
#define DEVICE_IP_ADDRESS (uint8_t[]){192, 168, 1, 10}
#define DEVICE_IP_ADDRESS (uint8_t[]){10, 0, 0, 2}
/** Netmask that the webserver should once connected to a RNDIS device (when DHCP is disabled). */
#define DEVICE_NETMASK (uint8_t[]){255, 255, 255, 0}
@ -58,7 +59,13 @@
/** IP address of the default gateway the webserver should use when routing outside the local subnet
* (when DHCP is disabled).
*/
#define DEVICE_GATEWAY (uint8_t[]){192, 168, 1, 1}
#define DEVICE_GATEWAY (uint8_t[]){10, 0, 0, 1}
/** Ethernet MAC address of the virtual webserver. When in device RNDIS mode, the virtual webserver requires
* a unique MAC address that it can use when sending packets to the RNDIS adapter, which contains a seperate
* MAC address as set in the RNDIS class driver configuration structure.
*/
#define SERVER_MAC_ADDRESS (uint8_t[]){1, 0, 1, 0, 1, 0}
/* External Variables: */
extern struct uip_eth_addr MACAddress;

15
Projects/Webserver/Lib/uip/uip-split.c
View file

@ -83,7 +83,10 @@ uip_split_output(void)
#if UIP_CONF_IPV6
tcpip_ipv6_output();
#else
RNDIS_Host_SendPacket(&Ethernet_RNDIS_Interface, uip_buf, uip_len);
if (USB_CurrentMode == USB_MODE_Device)
RNDIS_Device_SendPacket(&Ethernet_RNDIS_Interface_Device, uip_buf, uip_len);
else
RNDIS_Host_SendPacket(&Ethernet_RNDIS_Interface_Host, uip_buf, uip_len);
#endif /* UIP_CONF_IPV6 */
/* Now, create the second packet. To do this, it is not enough to
@ -124,7 +127,10 @@ uip_split_output(void)
#if UIP_CONF_IPV6
tcpip_ipv6_output();
#else
RNDIS_Host_SendPacket(&Ethernet_RNDIS_Interface, uip_buf, uip_len);
if (USB_CurrentMode == USB_MODE_Device)
RNDIS_Device_SendPacket(&Ethernet_RNDIS_Interface_Device, uip_buf, uip_len);
else
RNDIS_Host_SendPacket(&Ethernet_RNDIS_Interface_Host, uip_buf, uip_len);
#endif /* UIP_CONF_IPV6 */
return;
}
@ -134,7 +140,10 @@ uip_split_output(void)
#if UIP_CONF_IPV6
tcpip_ipv6_output();
#else
RNDIS_Host_SendPacket(&Ethernet_RNDIS_Interface, uip_buf, uip_len);
if (USB_CurrentMode == USB_MODE_Device)
RNDIS_Device_SendPacket(&Ethernet_RNDIS_Interface_Device, uip_buf, uip_len);
else
RNDIS_Host_SendPacket(&Ethernet_RNDIS_Interface_Host, uip_buf, uip_len);
#endif /* UIP_CONF_IPV6 */
}

10
Projects/Webserver/Lib/uip/uip.c
View file

@ -904,10 +904,12 @@ uip_process(u8_t flag)
#if UIP_BROADCAST
DEBUG_PRINTF("UDP IP checksum 0x%04x\n", uip_ipchksum());
if(BUF->proto == UIP_PROTO_UDP &&
uip_ipaddr_cmp(&BUF->destipaddr, &uip_broadcast_addr)
/*&&
uip_ipchksum() == 0xffff*/) {
goto udp_input;
uip_ipaddr_cmp(&BUF->destipaddr, &uip_broadcast_addr))
{
if (uip_ipaddr_cmp(&BUF->srcipaddr, &uip_all_zeroes_addr))
uip_ipaddr_copy(&BUF->srcipaddr, &uip_broadcast_addr);
goto udp_input;
}
#endif /* UIP_BROADCAST */