#ifndef _APP_CONFIG_H_
#define _APP_CONFIG_H_
- #define CLIENT_IP_ADDRESS { 10, 0, 0, 1}
- #define SERVER_IP_ADDRESS { 10, 0, 0, 2}
-
#define ADAPTER_MAC_ADDRESS {0x02, 0x00, 0x02, 0x00, 0x02, 0x00}
- #define SERVER_MAC_ADDRESS {0x00, 0x01, 0x00, 0x01, 0x00, 0x01}
-
- #define NO_DECODE_ETHERNET
- #define NO_DECODE_ARP
- #define NO_DECODE_IP
- #define NO_DECODE_ICMP
- #define NO_DECODE_TCP
- #define NO_DECODE_UDP
- #define NO_DECODE_DHCP
#endif
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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
- *
- * Address Resolution Protocol (ARP) packet handling routines. This protocol handles the
- * conversion of physical MAC addresses to protocol IP addresses between the host and the
- * device.
- */
-
-#include "ARP.h"
-
-/** Processes an ARP packet inside an Ethernet frame, and writes the appropriate response
- * to the output Ethernet frame if the host is requesting the IP or MAC address of the
- * virtual server device on the network.
- *
- * \param[in] InDataStart Pointer to the start of the incoming packet's ARP header
- * \param[out] OutDataStart Pointer to the start of the outgoing packet's ARP header
- *
- * \return The number of bytes written to the out Ethernet frame if any, NO_RESPONSE otherwise
- */
-int16_t ARP_ProcessARPPacket(void* InDataStart,
- void* OutDataStart)
-{
- DecodeARPHeader(InDataStart);
-
- ARP_Header_t* ARPHeaderIN = (ARP_Header_t*)InDataStart;
- ARP_Header_t* ARPHeaderOUT = (ARP_Header_t*)OutDataStart;
-
- /* Ensure that the ARP request is a IPv4 request packet */
- if ((SwapEndian_16(ARPHeaderIN->ProtocolType) == ETHERTYPE_IPV4) &&
- (SwapEndian_16(ARPHeaderIN->Operation) == ARP_OPERATION_REQUEST))
- {
- /* If the ARP packet is requesting the MAC or IP of the virtual webserver, return the response */
- if (IP_COMPARE(&ARPHeaderIN->TPA, &ServerIPAddress) ||
- MAC_COMPARE(&ARPHeaderIN->THA, &ServerMACAddress))
- {
- /* Fill out the ARP response header */
- ARPHeaderOUT->HardwareType = ARPHeaderIN->HardwareType;
- ARPHeaderOUT->ProtocolType = ARPHeaderIN->ProtocolType;
- ARPHeaderOUT->HLEN = ARPHeaderIN->HLEN;
- ARPHeaderOUT->PLEN = ARPHeaderIN->PLEN;
- ARPHeaderOUT->Operation = SwapEndian_16(ARP_OPERATION_REPLY);
-
- /* Copy over the sender MAC/IP to the target fields for the response */
- ARPHeaderOUT->THA = ARPHeaderIN->SHA;
- ARPHeaderOUT->TPA = ARPHeaderIN->SPA;
-
- /* Copy over the new sender MAC/IP - MAC and IP addresses of the virtual webserver */
- ARPHeaderOUT->SHA = ServerMACAddress;
- ARPHeaderOUT->SPA = ServerIPAddress;
-
- /* Return the size of the response so far */
- return sizeof(ARP_Header_t);
- }
- }
-
- return NO_RESPONSE;
-}
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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 ARP.c.
- */
-
-#ifndef _ARP_H_
-#define _ARP_H_
-
- /* Includes: */
- #include <avr/io.h>
- #include <string.h>
-
- #include "EthernetProtocols.h"
- #include "Ethernet.h"
- #include "ProtocolDecoders.h"
-
- /* Macros: */
- /** ARP header operation constant, indicating a request from a host for an address translation. */
- #define ARP_OPERATION_REQUEST 1
-
- /** ARP header operation constant, indicating a reply from a host giving an address translation. */
- #define ARP_OPERATION_REPLY 2
-
- /* Type Defines: */
- /** Type define for an ARP packet inside an Ethernet frame. */
- typedef struct
- {
- uint16_t HardwareType; /**< Hardware type constant, indicating the hardware used */
- uint16_t ProtocolType; /**< Protocol being resolved, usually ETHERTYPE_IPV4 */
-
- uint8_t HLEN; /**< Length in bytes of the source/destination hardware addresses */
- uint8_t PLEN; /**< Length in bytes of the source/destination protocol addresses */
- uint16_t Operation; /**< Type of operation, either ARP_OPERATION_REQUEST or ARP_OPERATION_REPLY */
-
- MAC_Address_t SHA; /**< Sender's hardware address */
- IP_Address_t SPA; /**< Sender's protocol address */
- MAC_Address_t THA; /**< Target's hardware address */
- IP_Address_t TPA; /**< Target's protocol address */
- } ARP_Header_t;
-
- /* Function Prototypes: */
- int16_t ARP_ProcessARPPacket(void* InDataStart,
- void* OutDataStart);
-
-#endif
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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
- *
- * Dynamic Host Configuration Protocol (DHCP) packet handling routines. This protocol
- * handles the automatic IP negotiation to the host, so that the host will use the provided
- * IP address given to it by the device.
- */
-
-#include "DHCP.h"
-
-/** Processes a DHCP packet inside an Ethernet frame, and writes the appropriate response
- * to the output Ethernet frame if the host is requesting or accepting an IP address.
- *
- * \param[in] IPHeaderInStart Pointer to the start of the incoming packet's IP header
- * \param[in] DHCPHeaderInStart Pointer to the start of the incoming packet's DHCP header
- * \param[out] DHCPHeaderOutStart Pointer to the start of the outgoing packet's DHCP header
- *
- * \return The number of bytes written to the out Ethernet frame if any, NO_RESPONSE otherwise
- */
-int16_t DHCP_ProcessDHCPPacket(void* IPHeaderInStart,
- void* DHCPHeaderInStart,
- void* DHCPHeaderOutStart)
-{
- IP_Header_t* IPHeaderIN = (IP_Header_t*)IPHeaderInStart;
- DHCP_Header_t* DHCPHeaderIN = (DHCP_Header_t*)DHCPHeaderInStart;
- DHCP_Header_t* DHCPHeaderOUT = (DHCP_Header_t*)DHCPHeaderOutStart;
-
- uint8_t* DHCPOptionsINStart = ((uint8_t*)DHCPHeaderInStart + sizeof(DHCP_Header_t));
- uint8_t* DHCPOptionsOUTStart = ((uint8_t*)DHCPHeaderOutStart + sizeof(DHCP_Header_t));
-
- DecodeDHCPHeader(DHCPHeaderInStart);
-
- /* Zero out the response DHCP packet, as much of it is legacy and left at 0 */
- memset(DHCPHeaderOUT, 0, sizeof(DHCP_Header_t));
-
- /* Fill out the response DHCP packet */
- DHCPHeaderOUT->HardwareType = DHCPHeaderIN->HardwareType;
- DHCPHeaderOUT->Operation = DHCP_OP_BOOTREPLY;
- DHCPHeaderOUT->HardwareAddressLength = DHCPHeaderIN->HardwareAddressLength;
- DHCPHeaderOUT->Hops = 0;
- DHCPHeaderOUT->TransactionID = DHCPHeaderIN->TransactionID;
- DHCPHeaderOUT->ElapsedSeconds = 0;
- DHCPHeaderOUT->Flags = DHCPHeaderIN->Flags;
- DHCPHeaderOUT->YourIP = ClientIPAddress;
- memmove(&DHCPHeaderOUT->ClientHardwareAddress, &DHCPHeaderIN->ClientHardwareAddress, sizeof(MAC_Address_t));
- DHCPHeaderOUT->Cookie = SwapEndian_32(DHCP_MAGIC_COOKIE);
-
- /* Alter the incoming IP packet header so that the corrected IP source and destinations are used - this means that
- when the response IP header is generated, it will use the corrected addresses and not the null/broatcast addresses */
- IPHeaderIN->SourceAddress = ClientIPAddress;
- IPHeaderIN->DestinationAddress = ServerIPAddress;
-
- /* Process the incoming DHCP packet options */
- while (DHCPOptionsINStart[0] != DHCP_OPTION_END)
- {
- /* Find the Message Type DHCP option, to determine the type of DHCP packet */
- if (DHCPOptionsINStart[0] == DHCP_OPTION_MESSAGETYPE)
- {
- if ((DHCPOptionsINStart[2] == DHCP_MESSAGETYPE_DISCOVER) || (DHCPOptionsINStart[2] == DHCP_MESSAGETYPE_REQUEST))
- {
- /* Fill out the response DHCP packet options for a DHCP OFFER or ACK response */
-
- *(DHCPOptionsOUTStart++) = DHCP_OPTION_MESSAGETYPE;
- *(DHCPOptionsOUTStart++) = 1;
- *(DHCPOptionsOUTStart++) = (DHCPOptionsINStart[2] == DHCP_MESSAGETYPE_DISCOVER) ? DHCP_MESSAGETYPE_OFFER
- : DHCP_MESSAGETYPE_ACK;
-
- *(DHCPOptionsOUTStart++) = DHCP_OPTION_SUBNETMASK;
- *(DHCPOptionsOUTStart++) = sizeof(IP_Address_t);
- *(DHCPOptionsOUTStart++) = 0xFF;
- *(DHCPOptionsOUTStart++) = 0xFF;
- *(DHCPOptionsOUTStart++) = 0xFF;
- *(DHCPOptionsOUTStart++) = 0x00;
-
- *(DHCPOptionsOUTStart++) = DHCP_OPTION_LEASETIME;
- *(DHCPOptionsOUTStart++) = sizeof(uint32_t);
- /* Lease Time 86400s (ONE_DAY) */
- *(DHCPOptionsOUTStart++) = 0x00;
- *(DHCPOptionsOUTStart++) = 0x01;
- *(DHCPOptionsOUTStart++) = 0x51;
- *(DHCPOptionsOUTStart++) = 0x80;
-
- *(DHCPOptionsOUTStart++) = DHCP_OPTION_DHCPSERVER;
- *(DHCPOptionsOUTStart++) = sizeof(IP_Address_t);
- memcpy(DHCPOptionsOUTStart, &ServerIPAddress, sizeof(IP_Address_t));
- DHCPOptionsOUTStart += sizeof(IP_Address_t);
-
- *(DHCPOptionsOUTStart++) = DHCP_OPTION_END;
-
- return (sizeof(DHCP_Header_t) + 18 + sizeof(IP_Address_t));
- }
- }
-
- /* Go to the next DHCP option - skip one byte if option is a padding byte, else skip the complete option's size */
- DHCPOptionsINStart += ((DHCPOptionsINStart[0] == DHCP_OPTION_PAD) ? 1 : (DHCPOptionsINStart[1] + 2));
- }
-
- return NO_RESPONSE;
-}
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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 DHCP.c.
- */
-
-#ifndef _DHCP_H_
-#define _DHCP_H_
-
- /* Includes: */
- #include <avr/io.h>
- #include <string.h>
-
- #include "EthernetProtocols.h"
- #include "Ethernet.h"
- #include "ProtocolDecoders.h"
-
- /* Macros: */
- /** DHCP operation constant, indicating a request from a host to a DHCP server. */
- #define DHCP_OP_BOOTREQUEST 0x01
-
- /** DHCP operation constant, indicating a reply from a DHCP server to a host. */
- #define DHCP_OP_BOOTREPLY 0x02
-
- /** Hardware type constant, indicating Ethernet as a carrier. */
- #define DHCP_HTYPE_ETHERNET 0x01
-
- /** Magic boot protocol "cookie", inserted into all BOOTP packets (BOOTP is the carrier of DHCP). */
- #define DHCP_MAGIC_COOKIE 0x63825363
-
- /** DHCP option list entry header, indicating that a subnet mask will follow. */
- #define DHCP_OPTION_SUBNETMASK 1
-
- /** DHCP option list entry header, indicating that the Lease Time will follow. */
- #define DHCP_OPTION_LEASETIME 51
-
- /** DHCP option list entry header, indicating that the DHCP message type constant will follow. */
- #define DHCP_OPTION_MESSAGETYPE 53
-
- /** DHCP option list entry header, indicating that the IP address of the DHCP server will follow. */
- #define DHCP_OPTION_DHCPSERVER 54
-
- /** DHCP option list entry header, used to pad out option data. */
- #define DHCP_OPTION_PAD 0
-
- /** DHCP option list entry header, indicating the end of option data. */
- #define DHCP_OPTION_END 255
-
- /** Message type constant, used in the DHCP option data field, requesting that a DHCP server offer an IP address. */
- #define DHCP_MESSAGETYPE_DISCOVER 1
-
- /** Message type constant, used in the DHCP option data field, indicating that a DHCP server is offering an IP address. */
- #define DHCP_MESSAGETYPE_OFFER 2
-
- /** Message type constant, used in the DHCP option data field, requesting that a DHCP server lease a given IP address. */
- #define DHCP_MESSAGETYPE_REQUEST 3
-
- /** Message type constant, used in the DHCP option data field, declining an offered DHCP server IP address lease. */
- #define DHCP_MESSAGETYPE_DECLINE 4
-
- /** Message type constant, used in the DHCP option data field, ACKing a host IP lease request. */
- #define DHCP_MESSAGETYPE_ACK 5
-
- /** Message type constant, used in the DHCP option data field, NACKing a host IP lease request. */
- #define DHCP_MESSAGETYPE_NACK 6
-
- /** Message type constant, used in the DHCP option data field, indicating that a host is releasing a leased IP address. */
- #define DHCP_MESSAGETYPE_RELEASE 7
-
- /* 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 */
-
- IP_Address_t ClientIP; /**< Client IP address, if already leased an IP */
- IP_Address_t YourIP; /**< Client IP address */
- IP_Address_t NextServerIP; /**< Legacy BOOTP protocol field, unused for DHCP */
- IP_Address_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 */
- } DHCP_Header_t;
-
- /* Function Prototypes: */
- int16_t DHCP_ProcessDHCPPacket(void* IPHeaderInStart,
- void* DHCPHeaderInStart,
- void* DHCPHeaderOutStart);
-
-#endif
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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
- *
- * Ethernet frame packet handling routines. This protocol handles the processing of raw Ethernet
- * frames sent and received, deferring the processing of sub-packet protocols to the appropriate
- * protocol handlers, such as DHCP or ARP.
- */
-
-#include "Ethernet.h"
-
-/** Constant for convenience when checking against or setting a MAC address to the virtual server MAC address. */
-const MAC_Address_t ServerMACAddress = {SERVER_MAC_ADDRESS};
-
-/** Constant for convenience when checking against or setting an IP address to the virtual server IP address. */
-const IP_Address_t ServerIPAddress = {SERVER_IP_ADDRESS};
-
-/** Constant for convenience when checking against or setting a MAC address to the broadcast MAC address. */
-const MAC_Address_t BroadcastMACAddress = {BROADCAST_MAC_ADDRESS};
-
-/** Constant for convenience when checking against or setting a IP address to the broadcast IP address. */
-const IP_Address_t BroadcastIPAddress = {BROADCAST_IP_ADDRESS};
-
-/** Constant for convenience when checking against or setting an IP address to the client (host) IP address. */
-const IP_Address_t ClientIPAddress = {CLIENT_IP_ADDRESS};
-
-
-/** Processes an incoming Ethernet frame, and writes the appropriate response to the output Ethernet
- * frame buffer if the sub protocol handlers create a valid response.
- */
-void Ethernet_ProcessPacket(Ethernet_Frame_Info_t* const FrameIN,
- Ethernet_Frame_Info_t* const FrameOUT)
-{
- DecodeEthernetFrameHeader(FrameIN->FrameData);
-
- /* Cast the incoming Ethernet frame to the Ethernet header type */
- Ethernet_Frame_Header_t* FrameINHeader = (Ethernet_Frame_Header_t*)&FrameIN->FrameData;
- Ethernet_Frame_Header_t* FrameOUTHeader = (Ethernet_Frame_Header_t*)&FrameOUT->FrameData;
-
- int16_t RetSize = NO_RESPONSE;
-
- /* Ensure frame is addressed to either all (broadcast) or the virtual webserver, and is a type II frame */
- if ((MAC_COMPARE(&FrameINHeader->Destination, &ServerMACAddress) ||
- MAC_COMPARE(&FrameINHeader->Destination, &BroadcastMACAddress)) &&
- (SwapEndian_16(FrameIN->FrameLength) > ETHERNET_VER2_MINSIZE))
- {
- /* Process the packet depending on its protocol */
- switch (SwapEndian_16(FrameINHeader->EtherType))
- {
- case ETHERTYPE_ARP:
- RetSize = ARP_ProcessARPPacket(&FrameIN->FrameData[sizeof(Ethernet_Frame_Header_t)],
- &FrameOUT->FrameData[sizeof(Ethernet_Frame_Header_t)]);
- break;
- case ETHERTYPE_IPV4:
- RetSize = IP_ProcessIPPacket(FrameIN,
- &FrameIN->FrameData[sizeof(Ethernet_Frame_Header_t)],
- &FrameOUT->FrameData[sizeof(Ethernet_Frame_Header_t)]);
- break;
- }
-
- /* Protocol processing routine has filled a response, complete the ethernet frame header */
- if (RetSize > 0)
- {
- /* Fill out the response Ethernet frame header */
- FrameOUTHeader->Source = ServerMACAddress;
- FrameOUTHeader->Destination = FrameINHeader->Source;
- FrameOUTHeader->EtherType = FrameINHeader->EtherType;
-
- /* Set the response length in the buffer and indicate that a response is ready to be sent */
- FrameOUT->FrameLength = (sizeof(Ethernet_Frame_Header_t) + RetSize);
- }
- }
-
- /* Check if the packet was processed */
- if (RetSize != NO_PROCESS)
- {
- /* Clear the frame buffer */
- FrameIN->FrameLength = 0;
- }
-}
-
-/** Calculates the appropriate ethernet checksum, consisting of the addition of the one's
- * compliment of each word, complimented.
- *
- * \param[in] Data Pointer to the packet buffer data whose checksum must be calculated
- * \param[in] Bytes Number of bytes in the data buffer to process
- *
- * \return A 16-bit Ethernet checksum value
- */
-uint16_t Ethernet_Checksum16(void* Data,
- uint16_t Bytes)
-{
- uint16_t* Words = (uint16_t*)Data;
- uint32_t Checksum = 0;
-
- for (uint16_t CurrWord = 0; CurrWord < (Bytes >> 1); CurrWord++)
- Checksum += Words[CurrWord];
-
- while (Checksum & 0xFFFF0000)
- Checksum = ((Checksum & 0xFFFF) + (Checksum >> 16));
-
- return ~Checksum;
-}
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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 Ethernet.c.
- */
-
-#ifndef _ETHERNET_H_
-#define _ETHERNET_H_
-
- /* Includes: */
- #include <avr/io.h>
- #include <string.h>
-
- #include <LUFA/Drivers/USB/USB.h>
-
- #include "Config/AppConfig.h"
-
- #include "EthernetProtocols.h"
- #include "ProtocolDecoders.h"
- #include "ICMP.h"
- #include "TCP.h"
- #include "UDP.h"
- #include "DHCP.h"
- #include "ARP.h"
- #include "IP.h"
-
- /* Macros: */
- /** Physical MAC address of the network broadcast address. */
- #define BROADCAST_MAC_ADDRESS {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}
-
- /** Performs a comparison between two MAC addresses, indicating if they are identical.
- *
- * \param[in] MAC1 First MAC address
- * \param[in] MAC2 Second MAC address
- *
- * \return True if the addresses match, \c false otherwise
- */
- #define MAC_COMPARE(MAC1, MAC2) (memcmp(MAC1, MAC2, sizeof(MAC_Address_t)) == 0)
-
- /** Minimum size of an Ethernet packet in bytes, to conform to the Ethernet V2 packet standard. */
- #define ETHERNET_VER2_MINSIZE 0x0600
-
- /** Return value for all sub protocol handling routines, indicating that no response packet has been generated. */
- #define NO_RESPONSE 0
-
- /** Return value for all sub protocol handling routines, indicating that the packet has not yet been handled. */
- #define NO_PROCESS -1
-
- /* Type Defines: */
- /** Type define for an Ethernet frame header. */
- typedef struct
- {
- MAC_Address_t Destination; /**< Physical MAC address of the packet recipient */
- MAC_Address_t Source; /**< Physics MAC address of the packet source */
- uint16_t EtherType; /**< Ethernet packet sub-protocol type, for Ethernet V2 packets */
- } Ethernet_Frame_Header_t;
-
- /* External Variables: */
- extern const MAC_Address_t ServerMACAddress;
- extern const IP_Address_t ServerIPAddress;
- extern const MAC_Address_t BroadcastMACAddress;
- extern const IP_Address_t BroadcastIPAddress;
- extern const IP_Address_t ClientIPAddress;
-
- /* Function Prototypes: */
- void Ethernet_ProcessPacket(Ethernet_Frame_Info_t* const FrameIN,
- Ethernet_Frame_Info_t* const FrameOUT);
- uint16_t Ethernet_Checksum16(void* Data,
- uint16_t Bytes);
-
-#endif
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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
- *
- * General Ethernet protocol constants and type defines, for use by
- * all network protocol portions of the TCP/IP stack.
- */
-
-#ifndef _ETHERNET_PROTOCOLS_H_
-#define _ETHERNET_PROTOCOLS_H_
-
- /* Includes: */
- #include <LUFA/Drivers/USB/USB.h>
-
- /* Macros: */
- #define ETHERTYPE_IPV4 0x0800
- #define ETHERTYPE_ARP 0x0806
- #define ETHERTYPE_RARP 0x8035
- #define ETHERTYPE_APPLETALK 0x809b
- #define ETHERTYPE_APPLETALKARP 0x80f3
- #define ETHERTYPE_IEEE8021Q 0x8100
- #define ETHERTYPE_NOVELLIPX 0x8137
- #define ETHERTYPE_NOVELL 0x8138
- #define ETHERTYPE_IPV6 0x86DD
- #define ETHERTYPE_COBRANET 0x8819
- #define ETHERTYPE_PROVIDERBRIDGING 0x88a8
- #define ETHERTYPE_MPLSUNICAST 0x8847
- #define ETHERTYPE_MPLSMULTICAST 0x8848
- #define ETHERTYPE_PPPoEDISCOVERY 0x8863
- #define ETHERTYPE_PPPoESESSION 0x8864
- #define ETHERTYPE_EAPOVERLAN 0x888E
- #define ETHERTYPE_HYPERSCSI 0x889A
- #define ETHERTYPE_ATAOVERETHERNET 0x88A2
- #define ETHERTYPE_ETHERCAT 0x88A4
- #define ETHERTYPE_SERCOSIII 0x88CD
- #define ETHERTYPE_CESoE 0x88D8
- #define ETHERTYPE_MACSECURITY 0x88E5
- #define ETHERTYPE_FIBRECHANNEL 0x8906
- #define ETHERTYPE_QINQ 0x9100
- #define ETHERTYPE_VLLT 0xCAFE
-
- #define PROTOCOL_ICMP 1
- #define PROTOCOL_IGMP 2
- #define PROTOCOL_TCP 6
- #define PROTOCOL_UDP 17
- #define PROTOCOL_OSPF 89
- #define PROTOCOL_SCTP 132
-
- /* Type Defines: */
- /** Type define for an Ethernet frame buffer data and information structure. */
- typedef struct
- {
- uint8_t FrameData[ETHERNET_FRAME_SIZE_MAX]; /**< Ethernet frame contents. */
- uint16_t FrameLength; /**< Length in bytes of the Ethernet frame stored in the buffer. */
- } Ethernet_Frame_Info_t;
-
- /** Type define for a protocol IP address of a device on a network. */
- typedef struct
- {
- uint8_t Octets[4]; /**< Individual bytes of an IP address */
- } IP_Address_t;
-
-#endif
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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
- *
- * Internet Control Message Protocol (ICMP) packet handling routines. This protocol handles
- * Echo requests from the host, to indicate a successful network connection between the host
- * and the virtual server.
- */
-
-#include "ICMP.h"
-
-/** Processes an ICMP packet inside an Ethernet frame, and writes the appropriate response
- * to the output Ethernet frame if the host is issuing a ICMP ECHO request.
- *
- * \param[in] FrameIN Pointer to the incoming Ethernet frame information structure
- * \param[in] InDataStart Pointer to the start of the incoming packet's ICMP header
- * \param[out] OutDataStart Pointer to the start of the outgoing packet's ICMP header
- *
- * \return The number of bytes written to the out Ethernet frame if any, NO_RESPONSE otherwise
- */
-int16_t ICMP_ProcessICMPPacket(Ethernet_Frame_Info_t* const FrameIN,
- void* InDataStart,
- void* OutDataStart)
-{
- ICMP_Header_t* ICMPHeaderIN = (ICMP_Header_t*)InDataStart;
- ICMP_Header_t* ICMPHeaderOUT = (ICMP_Header_t*)OutDataStart;
-
- DecodeICMPHeader(InDataStart);
-
- /* Determine if the ICMP packet is an echo request (ping) */
- if (ICMPHeaderIN->Type == ICMP_TYPE_ECHOREQUEST)
- {
- /* Fill out the ICMP response packet */
- ICMPHeaderOUT->Type = ICMP_TYPE_ECHOREPLY;
- ICMPHeaderOUT->Code = 0;
- ICMPHeaderOUT->Checksum = 0;
- ICMPHeaderOUT->Id = ICMPHeaderIN->Id;
- ICMPHeaderOUT->Sequence = ICMPHeaderIN->Sequence;
-
- intptr_t DataSize = FrameIN->FrameLength - ((((intptr_t)InDataStart + sizeof(ICMP_Header_t)) - (intptr_t)FrameIN->FrameData));
-
- /* Copy the remaining payload to the response - echo requests should echo back any sent data */
- memmove(&((uint8_t*)OutDataStart)[sizeof(ICMP_Header_t)],
- &((uint8_t*)InDataStart)[sizeof(ICMP_Header_t)],
- DataSize);
-
- ICMPHeaderOUT->Checksum = Ethernet_Checksum16(ICMPHeaderOUT, (DataSize + sizeof(ICMP_Header_t)));
-
- /* Return the size of the response so far */
- return (DataSize + sizeof(ICMP_Header_t));
- }
-
- return NO_RESPONSE;
-}
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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 ICMP.c.
- */
-
-#ifndef _ICMP_H_
-#define _ICMP_H_
-
- /* Includes: */
- #include <avr/io.h>
- #include <string.h>
-
- #include "EthernetProtocols.h"
- #include "Ethernet.h"
- #include "ProtocolDecoders.h"
-
- /* Macros: */
- /** ICMP message type constant, indicating an ICMP ECHO Reply message. */
- #define ICMP_TYPE_ECHOREPLY 0
-
- /** ICMP message type constant, indicating a packet destination is unreachable. */
- #define ICMP_TYPE_DESTINATIONUNREACHABLE 3
-
- /** ICMP message type constant, indicating an ICMP Source Quench message. */
- #define ICMP_TYPE_SOURCEQUENCH 4
-
- /** ICMP message type constant, indicating an ICMP Redirect message. */
- #define ICMP_TYPE_REDIRECTMESSAGE 5
-
- /** ICMP message type constant, indicating an ICMP ECHO Request message. */
- #define ICMP_TYPE_ECHOREQUEST 8
-
- /** ICMP message type constant, indicating an ICMP Time Exceeded message. */
- #define ICMP_TYPE_TIMEEXCEEDED 11
-
- /* Type Defines: */
- /** Type define for an ICMP message header. */
- typedef struct
- {
- uint8_t Type; /**< ICMP message type, an \c ICMP_TYPE_* constant */
- uint8_t Code; /**< ICMP message code, indicating the message value */
- uint16_t Checksum; /**< Ethernet checksum of the ICMP message */
- uint16_t Id; /**< Id of the ICMP message */
- uint16_t Sequence; /**< Sequence number of the ICMP message, to link together message responses */
- } ICMP_Header_t;
-
- /* Function Prototypes: */
- int16_t ICMP_ProcessICMPPacket(Ethernet_Frame_Info_t* const FrameIN,
- void* InDataStart,
- void* OutDataStart);
-
-#endif
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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
- *
- * Internet Protocol (IP) packet handling routines. This protocol handles IP packets from the
- * host which typically encapsulate other protocols such as ICMP, UDP and TCP.
- */
-
-#include "IP.h"
-
-/** Processes an IP packet inside an Ethernet frame, and writes the appropriate response
- * to the output Ethernet frame if one is created by a sub-protocol handler.
- *
- * \param[in] FrameIN Pointer to the incoming Ethernet frame information structure
- * \param[in] InDataStart Pointer to the start of the incoming packet's IP header
- * \param[out] OutDataStart Pointer to the start of the outgoing packet's IP header
- *
- * \return The number of bytes written to the out Ethernet frame if any, NO_RESPONSE if no
- * response was generated, NO_PROCESS if the packet processing was deferred until the
- * next Ethernet packet handler iteration
- */
-int16_t IP_ProcessIPPacket(Ethernet_Frame_Info_t* const FrameIN,
- void* InDataStart,
- void* OutDataStart)
-{
- DecodeIPHeader(InDataStart);
-
- IP_Header_t* IPHeaderIN = (IP_Header_t*)InDataStart;
- IP_Header_t* IPHeaderOUT = (IP_Header_t*)OutDataStart;
-
- /* Header length is specified in number of longs in the packet header, convert to bytes */
- uint16_t HeaderLengthBytes = (IPHeaderIN->HeaderLength * sizeof(uint32_t));
-
- int16_t RetSize = NO_RESPONSE;
-
- /* Check to ensure the IP packet is addressed to the virtual webserver's IP or the broadcast IP address */
- if (!(IP_COMPARE(&IPHeaderIN->DestinationAddress, &ServerIPAddress)) &&
- !(IP_COMPARE(&IPHeaderIN->DestinationAddress, &BroadcastIPAddress)))
- {
- return NO_RESPONSE;
- }
-
- /* Pass off the IP payload to the appropriate protocol processing routine */
- switch (IPHeaderIN->Protocol)
- {
- case PROTOCOL_ICMP:
- RetSize = ICMP_ProcessICMPPacket(FrameIN,
- &((uint8_t*)InDataStart)[HeaderLengthBytes],
- &((uint8_t*)OutDataStart)[sizeof(IP_Header_t)]);
- break;
- case PROTOCOL_TCP:
- RetSize = TCP_ProcessTCPPacket(InDataStart,
- &((uint8_t*)InDataStart)[HeaderLengthBytes],
- &((uint8_t*)OutDataStart)[sizeof(IP_Header_t)]);
- break;
- case PROTOCOL_UDP:
- RetSize = UDP_ProcessUDPPacket(InDataStart,
- &((uint8_t*)InDataStart)[HeaderLengthBytes],
- &((uint8_t*)OutDataStart)[sizeof(IP_Header_t)]);
- break;
- }
-
- /* Check to see if the protocol processing routine has filled out a response */
- if (RetSize > 0)
- {
- /* Fill out the response IP packet header */
- IPHeaderOUT->TotalLength = SwapEndian_16(sizeof(IP_Header_t) + RetSize);
- IPHeaderOUT->TypeOfService = 0;
- IPHeaderOUT->HeaderLength = (sizeof(IP_Header_t) / sizeof(uint32_t));
- IPHeaderOUT->Version = 4;
- IPHeaderOUT->Flags = 0;
- IPHeaderOUT->FragmentOffset = 0;
- IPHeaderOUT->Identification = 0;
- IPHeaderOUT->HeaderChecksum = 0;
- IPHeaderOUT->Protocol = IPHeaderIN->Protocol;
- IPHeaderOUT->TTL = DEFAULT_TTL;
- IPHeaderOUT->SourceAddress = IPHeaderIN->DestinationAddress;
- IPHeaderOUT->DestinationAddress = IPHeaderIN->SourceAddress;
-
- IPHeaderOUT->HeaderChecksum = Ethernet_Checksum16(IPHeaderOUT, sizeof(IP_Header_t));
-
- /* Return the size of the response so far */
- return (sizeof(IP_Header_t) + RetSize);
- }
-
- return RetSize;
-}
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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 IP.c.
- */
-
-#ifndef _IP_H_
-#define _IP_H_
-
- /* Includes: */
- #include <avr/io.h>
- #include <string.h>
-
- #include "EthernetProtocols.h"
- #include "Ethernet.h"
- #include "ProtocolDecoders.h"
- #include "Config/AppConfig.h"
-
- /* Macros: */
- /** Protocol IP address of the broadcast address. */
- #define BROADCAST_IP_ADDRESS {0xFF, 0xFF, 0xFF, 0xFF}
-
- /** Default Time To Live (TTL) value for sent packets, indicating the maximum allowable hops until their destination
- * is reached.
- */
- #define DEFAULT_TTL 128
-
- /** Performs a comparison between two IP addresses, indicating if they are identical.
- *
- * \param[in] IP1 First IP address
- * \param[in] IP2 Second IP address
- *
- * \return True if the addresses match, \c false otherwise
- */
- #define IP_COMPARE(IP1, IP2) (memcmp(IP1, IP2, sizeof(IP_Address_t)) == 0)
-
- /* Type Defines: */
- /** Type define of an IP packet header. */
- typedef struct
- {
- unsigned HeaderLength : 4; /**< Total length of the packet header, in 4-byte blocks */
- unsigned Version : 4; /**< IP protocol version */
- uint8_t TypeOfService; /**< Special service type identifier, indicating delay/throughput/reliability levels */
- uint16_t TotalLength; /**< Total length of the IP packet, in bytes */
-
- uint16_t Identification; /**< Identification value for identifying fragmented packets */
- unsigned FragmentOffset : 13; /**< Offset of this IP fragment */
- unsigned Flags : 3; /**< Fragment flags, to indicate if a packet is fragmented */
-
- uint8_t TTL; /**< Maximum allowable number of hops to reach the packet destination */
- uint8_t Protocol; /**< Encapsulated protocol type */
- uint16_t HeaderChecksum; /**< Ethernet checksum of the IP header */
-
- IP_Address_t SourceAddress; /**< Source protocol IP address of the packet */
- IP_Address_t DestinationAddress; /**< Destination protocol IP address of the packet */
- } IP_Header_t;
-
- /* Function Prototypes: */
- int16_t IP_ProcessIPPacket(Ethernet_Frame_Info_t* const FrameIN,
- void* InDataStart,
- void* OutDataStart);
-
-#endif
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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.
-*/
-
-/* Protocol decoders for Ethernet, TCP, IP, ICMP and ARP. Each of these routines
- accepts a header to the appropriate protocol and prints out pertinent information
- on the packet through the serial port.
-
- To disable printing of a specific protocol, define the token NO_DECODE_{Protocol}
- in the project makefile, and pass it to the compiler using the -D switch.
-*/
-
-/** \file
- *
- * Protocol decoding routines, for the plain-text decoding of Ethernet frames for debugging purposes.
- * Enabled protocol decoders will print incoming Ethernet frame contents through the USART in a human
- * readable format.
- *
- * Note that the USART is a slow transmission medium, and will slow down packet processing considerably.
- * Packet decoding routines can be disabled by defining NO_DECODE_{Protocol Name} in the project makefile
- * and passing it to the compiler via the -D switch.
- */
-
-#include "ProtocolDecoders.h"
-
-/** Decodes an Ethernet frame header and prints its contents to through the USART in a human readable format.
- *
- * \param[in] InDataStart Pointer to the start of an Ethernet frame of data
- */
-void DecodeEthernetFrameHeader(void* InDataStart)
-{
- #if !defined(NO_DECODE_ETHERNET)
- Ethernet_Frame_Header_t* FrameHeader = (Ethernet_Frame_Header_t*)InDataStart;
-
- printf_P(PSTR("\r\n"));
-
- printf_P(PSTR(" ETHERNET\r\n"));
-
- if (!(MAC_COMPARE(&FrameHeader->Destination, &ServerMACAddress)) &&
- !(MAC_COMPARE(&FrameHeader->Destination, &BroadcastMACAddress)))
- {
- printf_P(PSTR(" + NOT ADDRESSED TO DEVICE\r\n"));
- return;
- }
-
- printf_P(PSTR(" + MAC Source : %02X:%02X:%02X:%02X:%02X:%02X\r\n"), FrameHeader->Source.Octets[0],
- FrameHeader->Source.Octets[1],
- FrameHeader->Source.Octets[2],
- FrameHeader->Source.Octets[3],
- FrameHeader->Source.Octets[4],
- FrameHeader->Source.Octets[5]);
-
- printf_P(PSTR(" + MAC Dest: %02X:%02X:%02X:%02X:%02X:%02X\r\n"), FrameHeader->Destination.Octets[0],
- FrameHeader->Destination.Octets[1],
- FrameHeader->Destination.Octets[2],
- FrameHeader->Destination.Octets[3],
- FrameHeader->Destination.Octets[4],
- FrameHeader->Destination.Octets[5]);
-
- printf_P(PSTR(" + Protocol: 0x%04x\r\n"), SwapEndian_16(FrameHeader->EtherType));
- #endif
-}
-
-/** Decodes an ARP header and prints its contents to through the USART in a human readable format.
- *
- * \param[in] InDataStart Pointer to the start of an ARP packet header
- */
-void DecodeARPHeader(void* InDataStart)
-{
- #if !defined(NO_DECODE_ARP)
- ARP_Header_t* ARPHeader = (ARP_Header_t*)InDataStart;
-
- printf_P(PSTR(" \\\r\n ARP\r\n"));
-
- if (!(IP_COMPARE(&ARPHeader->TPA, &ServerIPAddress)) &&
- !(MAC_COMPARE(&ARPHeader->THA, &ServerMACAddress)))
- {
- printf_P(PSTR(" + NOT ADDRESSED TO DEVICE\r\n"));
- return;
- }
-
- printf_P(PSTR(" + Protocol: %x\r\n"), SwapEndian_16(ARPHeader->ProtocolType));
- printf_P(PSTR(" + Operation: %u\r\n"), SwapEndian_16(ARPHeader->Operation));
-
- if (SwapEndian_16(ARPHeader->ProtocolType) == ETHERTYPE_IPV4)
- {
- printf_P(PSTR(" + SHA MAC: %02X:%02X:%02X:%02X:%02X:%02X\r\n"), ARPHeader->SHA.Octets[0],
- ARPHeader->SHA.Octets[1],
- ARPHeader->SHA.Octets[2],
- ARPHeader->SHA.Octets[3],
- ARPHeader->SHA.Octets[4],
- ARPHeader->SHA.Octets[5]);
-
- printf_P(PSTR(" + SPA IP: %u.%u.%u.%u\r\n"), ARPHeader->SPA.Octets[0],
- ARPHeader->SPA.Octets[1],
- ARPHeader->SPA.Octets[2],
- ARPHeader->SPA.Octets[3]);
-
- printf_P(PSTR(" + THA MAC: %02X:%02X:%02X:%02X:%02X:%02X\r\n"), ARPHeader->THA.Octets[0],
- ARPHeader->THA.Octets[1],
- ARPHeader->THA.Octets[2],
- ARPHeader->THA.Octets[3],
- ARPHeader->THA.Octets[4],
- ARPHeader->THA.Octets[5]);
-
- printf_P(PSTR(" + TPA IP: %u.%u.%u.%u\r\n"), ARPHeader->TPA.Octets[0],
- ARPHeader->TPA.Octets[1],
- ARPHeader->TPA.Octets[2],
- ARPHeader->TPA.Octets[3]);
- }
- #endif
-}
-
-/** Decodes an IP header and prints its contents to through the USART in a human readable format.
- *
- * \param[in] InDataStart Pointer to the start of an IP packet header
- */
-void DecodeIPHeader(void* InDataStart)
-{
- #if !defined(NO_DECODE_IP)
- IP_Header_t* IPHeader = (IP_Header_t*)InDataStart;
-
- uint16_t HeaderLengthBytes = (IPHeader->HeaderLength * sizeof(uint32_t));
-
- printf_P(PSTR(" \\\r\n IP\r\n"));
-
- if (!(IP_COMPARE(&IPHeader->DestinationAddress, &ServerIPAddress)))
- {
- printf_P(PSTR(" + NOT ADDRESSED TO DEVICE\r\n"));
- return;
- }
-
- printf_P(PSTR(" + Header Length: %u Bytes\r\n"), HeaderLengthBytes);
- printf_P(PSTR(" + Packet Version: %u\r\n"), IPHeader->Version);
- printf_P(PSTR(" + Total Length: %u\r\n"), SwapEndian_16(IPHeader->TotalLength));
-
- printf_P(PSTR(" + Protocol: %u\r\n"), IPHeader->Protocol);
- printf_P(PSTR(" + TTL: %u\r\n"), IPHeader->TTL);
-
- printf_P(PSTR(" + IP Src: %u.%u.%u.%u\r\n"), IPHeader->SourceAddress.Octets[0],
- IPHeader->SourceAddress.Octets[1],
- IPHeader->SourceAddress.Octets[2],
- IPHeader->SourceAddress.Octets[3]);
-
- printf_P(PSTR(" + IP Dst: %u.%u.%u.%u\r\n"), IPHeader->DestinationAddress.Octets[0],
- IPHeader->DestinationAddress.Octets[1],
- IPHeader->DestinationAddress.Octets[2],
- IPHeader->DestinationAddress.Octets[3]);
- #endif
-}
-
-/** Decodes an ICMP header and prints its contents to through the USART in a human readable format.
- *
- * \param[in] InDataStart Pointer to the start of an ICMP packet header
- */
-void DecodeICMPHeader(void* InDataStart)
-{
- #if !defined(NO_DECODE_ICMP)
- ICMP_Header_t* ICMPHeader = (ICMP_Header_t*)InDataStart;
-
- printf_P(PSTR(" \\\r\n ICMP\r\n"));
-
- printf_P(PSTR(" + Type: %u\r\n"), ICMPHeader->Type);
- printf_P(PSTR(" + Code: %u\r\n"), ICMPHeader->Code);
- #endif
-}
-
-/** Decodes a TCP header and prints its contents to through the USART in a human readable format.
- *
- * \param[in] InDataStart Pointer to the start of a TCP packet header
- */
-void DecodeTCPHeader(void* InDataStart)
-{
- #if !defined(NO_DECODE_TCP)
- TCP_Header_t* TCPHeader = (TCP_Header_t*)InDataStart;
-
- uint16_t HeaderLengthBytes = (TCPHeader->DataOffset * sizeof(uint32_t));
-
- printf_P(PSTR(" \\\r\n TCP\r\n"));
-
- printf_P(PSTR(" + Header Length: %u Bytes\r\n"), HeaderLengthBytes);
-
- printf_P(PSTR(" + Source Port: %u\r\n"), SwapEndian_16(TCPHeader->SourcePort));
- printf_P(PSTR(" + Destination Port: %u\r\n"), SwapEndian_16(TCPHeader->DestinationPort));
-
- printf_P(PSTR(" + Sequence Number: %lu\r\n"), SwapEndian_32(TCPHeader->SequenceNumber));
- printf_P(PSTR(" + Acknowledgment Number: %lu\r\n"), SwapEndian_32(TCPHeader->AcknowledgmentNumber));
-
- printf_P(PSTR(" + Flags: 0x%02X\r\n"), TCPHeader->Flags);
-
- if (TCP_GetPortState(TCPHeader->DestinationPort) == TCP_Port_Closed)
- printf_P(PSTR(" + NOT LISTENING ON DESTINATION PORT\r\n"));
- #endif
-}
-
-/** Decodes an UDP header and prints its contents to through the USART in a human readable format.
- *
- * \param[in] InDataStart Pointer to the start of a UDP packet header
- */
-void DecodeUDPHeader(void* InDataStart)
-{
- #if !defined(NO_DECODE_UDP)
- UDP_Header_t* UDPHeader = (UDP_Header_t*)InDataStart;
-
- printf_P(PSTR(" \\\r\n UDP\r\n"));
-
- printf_P(PSTR(" + Source Port: %u\r\n"), SwapEndian_16(UDPHeader->SourcePort));
- printf_P(PSTR(" + Destination Port: %u\r\n"), SwapEndian_16(UDPHeader->DestinationPort));
-
- printf_P(PSTR(" + Data Length: %d\r\n"), SwapEndian_16(UDPHeader->Length));
- #endif
-}
-
-/** Decodes an DHCP header and prints its contents to through the USART in a human readable format.
- *
- * \param[in] InDataStart Pointer to the start of a DHCP packet header
- */
-void DecodeDHCPHeader(void* InDataStart)
-{
- #if !defined(NO_DECODE_DHCP)
- uint8_t* DHCPOptions = ((uint8_t*)InDataStart + sizeof(DHCP_Header_t));
-
- printf_P(PSTR(" \\\r\n DHCP\r\n"));
-
- while (DHCPOptions[0] != DHCP_OPTION_END)
- {
- if (DHCPOptions[0] == DHCP_OPTION_MESSAGETYPE)
- {
- switch (DHCPOptions[2])
- {
- case DHCP_MESSAGETYPE_DISCOVER:
- printf_P(PSTR(" + DISCOVER\r\n"));
- break;
- case DHCP_MESSAGETYPE_REQUEST:
- printf_P(PSTR(" + REQUEST\r\n"));
- break;
- case DHCP_MESSAGETYPE_RELEASE:
- printf_P(PSTR(" + RELEASE\r\n"));
- break;
- case DHCP_MESSAGETYPE_DECLINE:
- printf_P(PSTR(" + DECLINE\r\n"));
- break;
- }
- }
-
- DHCPOptions += ((DHCPOptions[0] == DHCP_OPTION_PAD) ? 1 : (DHCPOptions[1] + 2));
- }
-
- #endif
-}
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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 ProtocolDecoders.c.
- */
-
-#ifndef _PROTOCOL_DECODERS_H_
-#define _PROTOCOL_DECODERS_H_
-
- /* Includes: */
- #include <avr/io.h>
- #include <avr/pgmspace.h>
- #include <stdio.h>
-
- #include <LUFA/Drivers/Peripheral/Serial.h>
-
- #include "EthernetProtocols.h"
- #include "Ethernet.h"
- #include "Config/AppConfig.h"
-
- /* Function Prototypes: */
- void DecodeEthernetFrameHeader(void* InDataStart);
- void DecodeARPHeader(void* InDataStart);
- void DecodeIPHeader(void* InDataStart);
- void DecodeICMPHeader(void* InDataStart);
- void DecodeTCPHeader(void* InDataStart);
- void DecodeUDPHeader(void* InDataStart);
- void DecodeDHCPHeader(void* InDataStart);
-
-#endif
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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
- *
- * Transmission Control Protocol (TCP) packet handling routines. This protocol handles the reliable in-order transmission
- * and reception of packets to and from devices on a network, to "ports" on the device. It is used in situations where data
- * delivery must be reliable and correct, e.g. HTTP, TELNET and most other non-streaming protocols.
- */
-
-#define INCLUDE_FROM_TCP_C
-#include "TCP.h"
-
-/** Port state table array. This contains the current status of TCP ports in the device. To save on space, only open ports are
- * stored - closed ports may be overwritten at any time, and the system will assume any ports not present in the array are closed. This
- * allows for MAX_OPEN_TCP_PORTS to be less than the number of ports used by the application if desired.
- */
-TCP_PortState_t PortStateTable[MAX_OPEN_TCP_PORTS];
-
-/** Connection state table array. This contains the current status of TCP connections in the device. To save on space, only active
- * (non-closed) connections are stored - closed connections may be overwritten at any time, and the system will assume any connections
- * not present in the array are closed.
- */
-TCP_ConnectionState_t ConnectionStateTable[MAX_TCP_CONNECTIONS];
-
-
-/** Task to handle the calling of each registered application's callback function, to process and generate TCP packets at the application
- * level. If an application produces a response, this task constructs the appropriate Ethernet frame and places it into the Ethernet OUT
- * buffer for later transmission.
- */
-void TCP_TCPTask(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo,
- Ethernet_Frame_Info_t* const FrameOUT)
-{
- /* Run each application in sequence, to process incoming and generate outgoing packets */
- for (uint8_t CSTableEntry = 0; CSTableEntry < MAX_TCP_CONNECTIONS; CSTableEntry++)
- {
- /* Find the corresponding port entry in the port table */
- for (uint8_t PTableEntry = 0; PTableEntry < MAX_OPEN_TCP_PORTS; PTableEntry++)
- {
- /* Run the application handler for the port */
- if ((PortStateTable[PTableEntry].Port == ConnectionStateTable[CSTableEntry].Port) &&
- (PortStateTable[PTableEntry].State == TCP_Port_Open))
- {
- PortStateTable[PTableEntry].ApplicationHandler(&ConnectionStateTable[CSTableEntry],
- &ConnectionStateTable[CSTableEntry].Info.Buffer);
- }
- }
- }
-
- /* Bail out early if there is already a frame waiting to be sent in the Ethernet OUT buffer */
- if (FrameOUT->FrameLength)
- return;
-
- /* Send response packets from each application as the TCP packet buffers are filled by the applications */
- for (uint8_t CSTableEntry = 0; CSTableEntry < MAX_TCP_CONNECTIONS; CSTableEntry++)
- {
- /* For each completely received packet, pass it along to the listening application */
- if ((ConnectionStateTable[CSTableEntry].Info.Buffer.Direction == TCP_PACKETDIR_OUT) &&
- (ConnectionStateTable[CSTableEntry].Info.Buffer.Ready))
- {
- Ethernet_Frame_Header_t* FrameOUTHeader = (Ethernet_Frame_Header_t*)&FrameOUT->FrameData;
- IP_Header_t* IPHeaderOUT = (IP_Header_t*)&FrameOUT->FrameData[sizeof(Ethernet_Frame_Header_t)];
- TCP_Header_t* TCPHeaderOUT = (TCP_Header_t*)&FrameOUT->FrameData[sizeof(Ethernet_Frame_Header_t) +
- sizeof(IP_Header_t)];
- void* TCPDataOUT = &FrameOUT->FrameData[sizeof(Ethernet_Frame_Header_t) +
- sizeof(IP_Header_t) +
- sizeof(TCP_Header_t)];
-
- uint16_t PacketSize = ConnectionStateTable[CSTableEntry].Info.Buffer.Length;
-
- /* Fill out the TCP data */
- TCPHeaderOUT->SourcePort = ConnectionStateTable[CSTableEntry].Port;
- TCPHeaderOUT->DestinationPort = ConnectionStateTable[CSTableEntry].RemotePort;
- TCPHeaderOUT->SequenceNumber = SwapEndian_32(ConnectionStateTable[CSTableEntry].Info.SequenceNumberOut);
- TCPHeaderOUT->AcknowledgmentNumber = SwapEndian_32(ConnectionStateTable[CSTableEntry].Info.SequenceNumberIn);
- TCPHeaderOUT->DataOffset = (sizeof(TCP_Header_t) / sizeof(uint32_t));
- TCPHeaderOUT->WindowSize = SwapEndian_16(TCP_WINDOW_SIZE);
-
- TCPHeaderOUT->Flags = TCP_FLAG_ACK;
- TCPHeaderOUT->UrgentPointer = 0;
- TCPHeaderOUT->Checksum = 0;
- TCPHeaderOUT->Reserved = 0;
-
- memcpy(TCPDataOUT, ConnectionStateTable[CSTableEntry].Info.Buffer.Data, PacketSize);
-
- ConnectionStateTable[CSTableEntry].Info.SequenceNumberOut += PacketSize;
-
- TCPHeaderOUT->Checksum = TCP_Checksum16(TCPHeaderOUT, &ServerIPAddress,
- &ConnectionStateTable[CSTableEntry].RemoteAddress,
- (sizeof(TCP_Header_t) + PacketSize));
-
- PacketSize += sizeof(TCP_Header_t);
-
- /* Fill out the response IP header */
- IPHeaderOUT->TotalLength = SwapEndian_16(sizeof(IP_Header_t) + PacketSize);
- IPHeaderOUT->TypeOfService = 0;
- IPHeaderOUT->HeaderLength = (sizeof(IP_Header_t) / sizeof(uint32_t));
- IPHeaderOUT->Version = 4;
- IPHeaderOUT->Flags = 0;
- IPHeaderOUT->FragmentOffset = 0;
- IPHeaderOUT->Identification = 0;
- IPHeaderOUT->HeaderChecksum = 0;
- IPHeaderOUT->Protocol = PROTOCOL_TCP;
- IPHeaderOUT->TTL = DEFAULT_TTL;
- IPHeaderOUT->SourceAddress = ServerIPAddress;
- IPHeaderOUT->DestinationAddress = ConnectionStateTable[CSTableEntry].RemoteAddress;
-
- IPHeaderOUT->HeaderChecksum = Ethernet_Checksum16(IPHeaderOUT, sizeof(IP_Header_t));
-
- PacketSize += sizeof(IP_Header_t);
-
- /* Fill out the response Ethernet frame header */
- FrameOUTHeader->Source = ServerMACAddress;
- FrameOUTHeader->Destination = (MAC_Address_t){{0x02, 0x00, 0x02, 0x00, 0x02, 0x00}};
- FrameOUTHeader->EtherType = SwapEndian_16(ETHERTYPE_IPV4);
-
- PacketSize += sizeof(Ethernet_Frame_Header_t);
-
- /* Set the response length in the buffer and indicate that a response is ready to be sent */
- FrameOUT->FrameLength = PacketSize;
-
- ConnectionStateTable[CSTableEntry].Info.Buffer.Ready = false;
-
- break;
- }
- }
-}
-
-/** Initializes the TCP protocol handler, clearing the port and connection state tables. This must be called before TCP packets are
- * processed.
- */
-void TCP_Init(void)
-{
- /* Initialize the port state table with all CLOSED entries */
- for (uint8_t PTableEntry = 0; PTableEntry < MAX_OPEN_TCP_PORTS; PTableEntry++)
- PortStateTable[PTableEntry].State = TCP_Port_Closed;
-
- /* Initialize the connection table with all CLOSED entries */
- for (uint8_t CSTableEntry = 0; CSTableEntry < MAX_TCP_CONNECTIONS; CSTableEntry++)
- ConnectionStateTable[CSTableEntry].State = TCP_Connection_Closed;
-}
-
-/** Sets the state and callback handler of the given port, specified in big endian to the given state.
- *
- * \param[in] Port Port whose state and callback function to set, specified in big endian
- * \param[in] State New state of the port, a value from the \ref TCP_PortStates_t enum
- * \param[in] Handler Application callback handler for the port
- *
- * \return Boolean \c true if the port state was set, \c false otherwise (no more space in the port state table)
- */
-bool TCP_SetPortState(const uint16_t Port,
- const uint8_t State,
- void (*Handler)(TCP_ConnectionState_t*, TCP_ConnectionBuffer_t*))
-{
- /* Note, Port number should be specified in BIG endian to simplify network code */
-
- /* Check to see if the port entry is already in the port state table */
- for (uint8_t PTableEntry = 0; PTableEntry < MAX_OPEN_TCP_PORTS; PTableEntry++)
- {
- /* Find existing entry for the port in the table, update it if found */
- if (PortStateTable[PTableEntry].Port == Port)
- {
- PortStateTable[PTableEntry].State = State;
- PortStateTable[PTableEntry].ApplicationHandler = Handler;
- return true;
- }
- }
-
- /* Check if trying to open the port -- if so we need to find an unused (closed) entry and replace it */
- if (State == TCP_Port_Open)
- {
- for (uint8_t PTableEntry = 0; PTableEntry < MAX_OPEN_TCP_PORTS; PTableEntry++)
- {
- /* Find a closed port entry in the table, change it to the given port and state */
- if (PortStateTable[PTableEntry].State == TCP_Port_Closed)
- {
- PortStateTable[PTableEntry].Port = Port;
- PortStateTable[PTableEntry].State = State;
- PortStateTable[PTableEntry].ApplicationHandler = Handler;
- return true;
- }
- }
-
- /* Port not in table and no room to add it, return failure */
- return false;
- }
- else
- {
- /* Port not in table but trying to close it, so operation successful */
- return true;
- }
-}
-
-/** Retrieves the current state of a given TCP port, specified in big endian.
- *
- * \param[in] Port TCP port whose state is to be retrieved, given in big-endian
- *
- * \return A value from the \ref TCP_PortStates_t enum
- */
-uint8_t TCP_GetPortState(const uint16_t Port)
-{
- /* Note, Port number should be specified in BIG endian to simplify network code */
-
- for (uint8_t PTableEntry = 0; PTableEntry < MAX_OPEN_TCP_PORTS; PTableEntry++)
- {
- /* Find existing entry for the port in the table, return the port status if found */
- if (PortStateTable[PTableEntry].Port == Port)
- return PortStateTable[PTableEntry].State;
- }
-
- /* Port not in table, assume closed */
- return TCP_Port_Closed;
-}
-
-/** Sets the connection state of the given port, remote address and remote port to the given TCP connection state. If the
- * connection exists in the connection state table it is updated, otherwise it is created if possible.
- *
- * \param[in] Port TCP port of the connection on the device, specified in big endian
- * \param[in] RemoteAddress Remote protocol IP address of the connected device
- * \param[in] RemotePort TCP port of the remote device in the connection, specified in big endian
- * \param[in] State TCP connection state, a value from the \ref TCP_ConnectionStates_t enum
- *
- * \return Boolean \c true if the connection was updated or created, \c false otherwise (no more space in the connection state table)
- */
-bool TCP_SetConnectionState(const uint16_t Port,
- const IP_Address_t* RemoteAddress,
- const uint16_t RemotePort,
- const uint8_t State)
-{
- /* Note, Port number should be specified in BIG endian to simplify network code */
-
- for (uint8_t CSTableEntry = 0; CSTableEntry < MAX_TCP_CONNECTIONS; CSTableEntry++)
- {
- /* Find port entry in the table */
- if ((ConnectionStateTable[CSTableEntry].Port == Port) &&
- IP_COMPARE(&ConnectionStateTable[CSTableEntry].RemoteAddress, RemoteAddress) &&
- ConnectionStateTable[CSTableEntry].RemotePort == RemotePort)
- {
- ConnectionStateTable[CSTableEntry].State = State;
- return true;
- }
- }
-
- for (uint8_t CSTableEntry = 0; CSTableEntry < MAX_TCP_CONNECTIONS; CSTableEntry++)
- {
- /* Find empty entry in the table */
- if (ConnectionStateTable[CSTableEntry].State == TCP_Connection_Closed)
- {
- ConnectionStateTable[CSTableEntry].Port = Port;
- ConnectionStateTable[CSTableEntry].RemoteAddress = *RemoteAddress;
- ConnectionStateTable[CSTableEntry].RemotePort = RemotePort;
- ConnectionStateTable[CSTableEntry].State = State;
- return true;
- }
- }
-
- return false;
-}
-
-/** Retrieves the current state of a given TCP connection to a host.
- *
- * \param[in] Port TCP port on the device in the connection, specified in big endian
- * \param[in] RemoteAddress Remote protocol IP address of the connected host
- * \param[in] RemotePort Remote TCP port of the connected host, specified in big endian
- *
- * \return A value from the \ref TCP_ConnectionStates_t enum
- */
-uint8_t TCP_GetConnectionState(const uint16_t Port,
- const IP_Address_t* RemoteAddress,
- const uint16_t RemotePort)
-{
- /* Note, Port number should be specified in BIG endian to simplify network code */
-
- for (uint8_t CSTableEntry = 0; CSTableEntry < MAX_TCP_CONNECTIONS; CSTableEntry++)
- {
- /* Find port entry in the table */
- if ((ConnectionStateTable[CSTableEntry].Port == Port) &&
- IP_COMPARE(&ConnectionStateTable[CSTableEntry].RemoteAddress, RemoteAddress) &&
- ConnectionStateTable[CSTableEntry].RemotePort == RemotePort)
-
- {
- return ConnectionStateTable[CSTableEntry].State;
- }
- }
-
- return TCP_Connection_Closed;
-}
-
-/** Retrieves the connection info structure of a given connection to a host.
- *
- * \param[in] Port TCP port on the device in the connection, specified in big endian
- * \param[in] RemoteAddress Remote protocol IP address of the connected host
- * \param[in] RemotePort Remote TCP port of the connected host, specified in big endian
- *
- * \return ConnectionInfo structure of the connection if found, NULL otherwise
- */
-TCP_ConnectionInfo_t* TCP_GetConnectionInfo(const uint16_t Port,
- const IP_Address_t* RemoteAddress,
- const uint16_t RemotePort)
-{
- /* Note, Port number should be specified in BIG endian to simplify network code */
-
- for (uint8_t CSTableEntry = 0; CSTableEntry < MAX_TCP_CONNECTIONS; CSTableEntry++)
- {
- /* Find port entry in the table */
- if ((ConnectionStateTable[CSTableEntry].Port == Port) &&
- IP_COMPARE(&ConnectionStateTable[CSTableEntry].RemoteAddress, RemoteAddress) &&
- ConnectionStateTable[CSTableEntry].RemotePort == RemotePort)
- {
- return &ConnectionStateTable[CSTableEntry].Info;
- }
- }
-
- return NULL;
-}
-
-/** Processes a TCP packet inside an Ethernet frame, and writes the appropriate response
- * to the output Ethernet frame if one is created by a application handler.
- *
- * \param[in] IPHeaderInStart Pointer to the start of the incoming packet's IP header
- * \param[in] TCPHeaderInStart Pointer to the start of the incoming packet's TCP header
- * \param[out] TCPHeaderOutStart Pointer to the start of the outgoing packet's TCP header
- *
- * \return The number of bytes written to the out Ethernet frame if any, NO_RESPONSE if no
- * response was generated, NO_PROCESS if the packet processing was deferred until the
- * next Ethernet packet handler iteration
- */
-int16_t TCP_ProcessTCPPacket(void* IPHeaderInStart,
- void* TCPHeaderInStart,
- void* TCPHeaderOutStart)
-{
- IP_Header_t* IPHeaderIN = (IP_Header_t*)IPHeaderInStart;
- TCP_Header_t* TCPHeaderIN = (TCP_Header_t*)TCPHeaderInStart;
- TCP_Header_t* TCPHeaderOUT = (TCP_Header_t*)TCPHeaderOutStart;
-
- TCP_ConnectionInfo_t* ConnectionInfo;
-
- DecodeTCPHeader(TCPHeaderInStart);
-
- bool PacketResponse = false;
-
- /* Check if the destination port is open and allows incoming connections */
- if (TCP_GetPortState(TCPHeaderIN->DestinationPort) == TCP_Port_Open)
- {
- /* Detect SYN from host to start a connection */
- if (TCPHeaderIN->Flags & TCP_FLAG_SYN)
- TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress, TCPHeaderIN->SourcePort, TCP_Connection_Listen);
-
- /* Detect RST from host to abort existing connection */
- if (TCPHeaderIN->Flags & TCP_FLAG_RST)
- {
- if (TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort, TCP_Connection_Closed))
- {
- TCPHeaderOUT->Flags = (TCP_FLAG_RST | TCP_FLAG_ACK);
- PacketResponse = true;
- }
- }
- else
- {
- /* Process the incoming TCP packet based on the current connection state for the sender and port */
- switch (TCP_GetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress, TCPHeaderIN->SourcePort))
- {
- case TCP_Connection_Listen:
- if (TCPHeaderIN->Flags == TCP_FLAG_SYN)
- {
- /* SYN connection starts a connection with a peer */
- if (TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort, TCP_Connection_SYNReceived))
- {
- TCPHeaderOUT->Flags = (TCP_FLAG_SYN | TCP_FLAG_ACK);
-
- ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress, TCPHeaderIN->SourcePort);
-
- ConnectionInfo->SequenceNumberIn = (SwapEndian_32(TCPHeaderIN->SequenceNumber) + 1);
- ConnectionInfo->SequenceNumberOut = 0;
- ConnectionInfo->Buffer.InUse = false;
- }
- else
- {
- TCPHeaderOUT->Flags = TCP_FLAG_RST;
- }
-
- PacketResponse = true;
- }
-
- break;
- case TCP_Connection_SYNReceived:
- if (TCPHeaderIN->Flags == TCP_FLAG_ACK)
- {
- /* ACK during the connection process completes the connection to a peer */
-
- TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort, TCP_Connection_Established);
-
- ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort);
-
- ConnectionInfo->SequenceNumberOut++;
- }
-
- break;
- case TCP_Connection_Established:
- if (TCPHeaderIN->Flags == (TCP_FLAG_FIN | TCP_FLAG_ACK))
- {
- /* FIN ACK when connected to a peer starts the finalization process */
-
- TCPHeaderOUT->Flags = (TCP_FLAG_FIN | TCP_FLAG_ACK);
- PacketResponse = true;
-
- TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort, TCP_Connection_CloseWait);
-
- ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort);
-
- ConnectionInfo->SequenceNumberIn++;
- ConnectionInfo->SequenceNumberOut++;
- }
- else if ((TCPHeaderIN->Flags == TCP_FLAG_ACK) || (TCPHeaderIN->Flags == (TCP_FLAG_ACK | TCP_FLAG_PSH)))
- {
- ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort);
-
- /* Check if the buffer is currently in use either by a buffered data to send, or receive */
- if ((ConnectionInfo->Buffer.InUse == false) && (ConnectionInfo->Buffer.Ready == false))
- {
- ConnectionInfo->Buffer.Direction = TCP_PACKETDIR_IN;
- ConnectionInfo->Buffer.InUse = true;
- ConnectionInfo->Buffer.Length = 0;
- }
-
- /* Check if the buffer has been claimed by us to read in data from the peer */
- if ((ConnectionInfo->Buffer.Direction == TCP_PACKETDIR_IN) &&
- (ConnectionInfo->Buffer.Length != TCP_WINDOW_SIZE))
- {
- uint16_t IPOffset = (IPHeaderIN->HeaderLength * sizeof(uint32_t));
- uint16_t TCPOffset = (TCPHeaderIN->DataOffset * sizeof(uint32_t));
- uint16_t DataLength = (SwapEndian_16(IPHeaderIN->TotalLength) - IPOffset - TCPOffset);
-
- /* Copy the packet data into the buffer */
- memcpy(&ConnectionInfo->Buffer.Data[ConnectionInfo->Buffer.Length],
- &((uint8_t*)TCPHeaderInStart)[TCPOffset],
- DataLength);
-
- ConnectionInfo->SequenceNumberIn += DataLength;
- ConnectionInfo->Buffer.Length += DataLength;
-
- /* Check if the buffer is full or if the PSH flag is set, if so indicate buffer ready */
- if ((!(TCP_WINDOW_SIZE - ConnectionInfo->Buffer.Length)) || (TCPHeaderIN->Flags & TCP_FLAG_PSH))
- {
- ConnectionInfo->Buffer.InUse = false;
- ConnectionInfo->Buffer.Ready = true;
-
- TCPHeaderOUT->Flags = TCP_FLAG_ACK;
- PacketResponse = true;
- }
- }
- else
- {
- /* Buffer is currently in use by the application, defer processing of the incoming packet */
- return NO_PROCESS;
- }
- }
-
- break;
- case TCP_Connection_Closing:
- ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort);
-
- TCPHeaderOUT->Flags = (TCP_FLAG_ACK | TCP_FLAG_FIN);
- PacketResponse = true;
-
- ConnectionInfo->Buffer.InUse = false;
-
- TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort, TCP_Connection_FINWait1);
-
- break;
- case TCP_Connection_FINWait1:
- if (TCPHeaderIN->Flags == (TCP_FLAG_FIN | TCP_FLAG_ACK))
- {
- ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort);
-
- TCPHeaderOUT->Flags = TCP_FLAG_ACK;
- PacketResponse = true;
-
- ConnectionInfo->SequenceNumberIn++;
- ConnectionInfo->SequenceNumberOut++;
-
- TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort, TCP_Connection_Closed);
- }
- else if (TCPHeaderIN->Flags == TCP_FLAG_ACK)
- {
- TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort, TCP_Connection_FINWait2);
- }
-
- break;
- case TCP_Connection_FINWait2:
- if (TCPHeaderIN->Flags == (TCP_FLAG_FIN | TCP_FLAG_ACK))
- {
- ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort);
-
- TCPHeaderOUT->Flags = TCP_FLAG_ACK;
- PacketResponse = true;
-
- ConnectionInfo->SequenceNumberIn++;
- ConnectionInfo->SequenceNumberOut++;
-
- TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort, TCP_Connection_Closed);
- }
-
- break;
- case TCP_Connection_CloseWait:
- if (TCPHeaderIN->Flags == TCP_FLAG_ACK)
- {
- TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort, TCP_Connection_Closed);
- }
-
- break;
- }
- }
- }
- else
- {
- /* Port is not open, indicate via a RST/ACK response to the sender */
- TCPHeaderOUT->Flags = (TCP_FLAG_RST | TCP_FLAG_ACK);
- PacketResponse = true;
- }
-
- /* Check if we need to respond to the sent packet */
- if (PacketResponse)
- {
- ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort);
-
- TCPHeaderOUT->SourcePort = TCPHeaderIN->DestinationPort;
- TCPHeaderOUT->DestinationPort = TCPHeaderIN->SourcePort;
- TCPHeaderOUT->SequenceNumber = SwapEndian_32(ConnectionInfo->SequenceNumberOut);
- TCPHeaderOUT->AcknowledgmentNumber = SwapEndian_32(ConnectionInfo->SequenceNumberIn);
- TCPHeaderOUT->DataOffset = (sizeof(TCP_Header_t) / sizeof(uint32_t));
-
- if (!(ConnectionInfo->Buffer.InUse))
- TCPHeaderOUT->WindowSize = SwapEndian_16(TCP_WINDOW_SIZE);
- else
- TCPHeaderOUT->WindowSize = SwapEndian_16(TCP_WINDOW_SIZE - ConnectionInfo->Buffer.Length);
-
- TCPHeaderOUT->UrgentPointer = 0;
- TCPHeaderOUT->Checksum = 0;
- TCPHeaderOUT->Reserved = 0;
-
- TCPHeaderOUT->Checksum = TCP_Checksum16(TCPHeaderOUT, &IPHeaderIN->DestinationAddress,
- &IPHeaderIN->SourceAddress, sizeof(TCP_Header_t));
-
- return sizeof(TCP_Header_t);
- }
-
- return NO_RESPONSE;
-}
-
-/** Calculates the appropriate TCP checksum, consisting of the addition of the one's compliment of each word,
- * complimented.
- *
- * \param[in] TCPHeaderOutStart Pointer to the start of the packet's outgoing TCP header
- * \param[in] SourceAddress Source protocol IP address of the outgoing IP header
- * \param[in] DestinationAddress Destination protocol IP address of the outgoing IP header
- * \param[in] TCPOutSize Size in bytes of the TCP data header and payload
- *
- * \return A 16-bit TCP checksum value
- */
-static uint16_t TCP_Checksum16(void* TCPHeaderOutStart,
- const IP_Address_t* SourceAddress,
- const IP_Address_t* DestinationAddress,
- uint16_t TCPOutSize)
-{
- uint32_t Checksum = 0;
-
- /* TCP/IP checksums are the addition of the one's compliment of each word including the IP pseudo-header,
- complimented */
-
- Checksum += ((uint16_t*)SourceAddress)[0];
- Checksum += ((uint16_t*)SourceAddress)[1];
- Checksum += ((uint16_t*)DestinationAddress)[0];
- Checksum += ((uint16_t*)DestinationAddress)[1];
- Checksum += SwapEndian_16(PROTOCOL_TCP);
- Checksum += SwapEndian_16(TCPOutSize);
-
- for (uint16_t CurrWord = 0; CurrWord < (TCPOutSize >> 1); CurrWord++)
- Checksum += ((uint16_t*)TCPHeaderOutStart)[CurrWord];
-
- if (TCPOutSize & 0x01)
- Checksum += (((uint16_t*)TCPHeaderOutStart)[TCPOutSize >> 1] & 0x00FF);
-
- while (Checksum & 0xFFFF0000)
- Checksum = ((Checksum & 0xFFFF) + (Checksum >> 16));
-
- return ~Checksum;
-}
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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 TCP.c.
- */
-
-#ifndef _TCP_H_
-#define _TCP_H_
-
- /* Includes: */
- #include <avr/io.h>
- #include <stdbool.h>
-
- #include "EthernetProtocols.h"
- #include "Ethernet.h"
- #include "ProtocolDecoders.h"
-
- /* Macros: */
- /** Maximum number of TCP ports which can be open at the one time. */
- #define MAX_OPEN_TCP_PORTS 1
-
- /** Maximum number of TCP connections which can be sustained at the one time. */
- #define MAX_TCP_CONNECTIONS 3
-
- /** TCP window size, giving the maximum number of bytes which can be buffered at the one time. */
- #define TCP_WINDOW_SIZE 512
-
- /** Port number for HTTP transmissions. */
- #define TCP_PORT_HTTP SwapEndian_16(80)
-
- /** Data direction indicator for a TCP application buffer, indicating data from host-to-device. */
- #define TCP_PACKETDIR_IN false
-
- /** Data direction indicator for a TCP application buffer, indicating data from device-to-host. */
- #define TCP_PACKETDIR_OUT true
-
- /** Congestion Window Reduced TCP flag mask. */
- #define TCP_FLAG_CWR (1 << 7)
-
- /** Explicit Congestion Notification TCP flag mask. */
- #define TCP_FLAG_ECE (1 << 6)
-
- /** Urgent TCP flag mask. */
- #define TCP_FLAG_URG (1 << 5)
-
- /** Data Acknowledge TCP flag mask. */
- #define TCP_FLAG_ACK (1 << 4)
-
- /** Data Push TCP flag mask. */
- #define TCP_FLAG_PSH (1 << 3)
-
- /** Reset TCP flag mask. */
- #define TCP_FLAG_RST (1 << 2)
-
- /** Synchronize TCP flag mask. */
- #define TCP_FLAG_SYN (1 << 1)
-
- /** Connection Finalize TCP flag mask. */
- #define TCP_FLAG_FIN (1 << 0)
-
- /** Application macro: Determines if the given application buffer contains a packet received from the host
- *
- * \param[in] Buffer Application buffer to check
- *
- * \return Boolean \c true if the buffer contains a packet from the host, \c false otherwise
- */
- #define TCP_APP_HAS_RECEIVED_PACKET(Buffer) (Buffer->Ready && (Buffer->Direction == TCP_PACKETDIR_IN))
-
- /** Application macro: Indicates if the application buffer is currently locked by the application for device-to-host transfers.
- *
- * \param[in] Buffer Application buffer to check
- *
- * \return Boolean \c true if the buffer has been captured by the application for device-to-host transmissions, \c false otherwise
- */
- #define TCP_APP_HAVE_CAPTURED_BUFFER(Buffer) (!(Buffer->Ready) && Buffer->InUse && (Buffer->Direction == TCP_PACKETDIR_OUT))
-
- /** Application macro: Indicates if the application can lock the buffer for multiple continued device-to-host transmissions.
- *
- * \param[in] Buffer Application buffer to check
- *
- * \return Boolean \c true if the buffer may be captured by the application for device-to-host transmissions, \c false otherwise
- */
- #define TCP_APP_CAN_CAPTURE_BUFFER(Buffer) Buffer->InUse
-
- /** Application macro: Captures the application buffer, locking it for device-to-host transmissions only. This should be
- * performed when the application needs to transmit several packets worth of data in succession with no interruptions from the host.
- *
- * \pre The application must check that the buffer can be locked first using TCP_APP_CAN_CAPTURE_BUFFER().
- *
- * \param[in] Buffer Application buffer to lock
- */
- #define TCP_APP_CAPTURE_BUFFER(Buffer) do { Buffer->Direction = TCP_PACKETDIR_OUT; Buffer->InUse = true; } while (0)
-
- /** Application macro: Releases a captured application buffer, allowing for host-to-device packets to be received.
- *
- * \param[in] Buffer Application buffer to release
- */
- #define TCP_APP_RELEASE_BUFFER(Buffer) do { Buffer->InUse = false; } while (0)
-
- /** Application macro: Sends the contents of the given application buffer to the host.
- *
- * \param[in] Buffer Application buffer to send
- * \param[in] Len Length of data contained in the buffer
- */
- #define TCP_APP_SEND_BUFFER(Buffer, Len) do { Buffer->Direction = TCP_PACKETDIR_OUT; Buffer->Length = Len; Buffer->Ready = true; } while (0)
-
- /** Application macro: Clears the application buffer, ready for a packet to be written to it.
- *
- * \param[in] Buffer Application buffer to clear
- */
- #define TCP_APP_CLEAR_BUFFER(Buffer) do { Buffer->Ready = false; Buffer->Length = 0; } while (0)
-
- /** Application macro: Closes an open connection to a host.
- *
- * \param[in] Connection Open TCP connection to close
- */
- #define TCP_APP_CLOSECONNECTION(Connection) do { Connection->State = TCP_Connection_Closing; } while (0)
-
- /* Enums: */
- /** Enum for possible TCP port states. */
- enum TCP_PortStates_t
- {
- TCP_Port_Closed = 0, /**< TCP port closed, no connections to a host may be made on this port. */
- TCP_Port_Open = 1, /**< TCP port open, connections to a host may be made on this port. */
- };
-
- /** Enum for possible TCP connection states. */
- enum TCP_ConnectionStates_t
- {
- TCP_Connection_Listen = 0, /**< Listening for a connection from a host */
- TCP_Connection_SYNSent = 1, /**< Unused */
- TCP_Connection_SYNReceived = 2, /**< SYN received, waiting for ACK */
- TCP_Connection_Established = 3, /**< Connection established in both directions */
- TCP_Connection_FINWait1 = 4, /**< Closing, waiting for ACK */
- TCP_Connection_FINWait2 = 5, /**< Closing, waiting for FIN ACK */
- TCP_Connection_CloseWait = 6, /**< Closing, waiting for ACK */
- TCP_Connection_Closing = 7, /**< Unused */
- TCP_Connection_LastACK = 8, /**< Unused */
- TCP_Connection_TimeWait = 9, /**< Unused */
- TCP_Connection_Closed = 10, /**< Connection closed in both directions */
- };
-
- /* Type Defines: */
- /** Type define for a TCP connection buffer structure, including size, data and direction. */
- typedef struct
- {
- uint16_t Length; /**< Length of data in the TCP application buffer */
- uint8_t Data[TCP_WINDOW_SIZE]; /**< TCP application data buffer */
- bool Direction; /**< Buffer transmission direction, either TCP_PACKETDIR_IN or TCP_PACKETDIR_OUT */
- bool Ready; /**< If data from host, indicates buffer ready to be read, otherwise indicates
- * buffer ready to be sent to the host
- */
- bool InUse; /**< Indicates if the buffer is locked to to the current direction, and cannot be changed */
- } TCP_ConnectionBuffer_t;
-
- /** Type define for a TCP connection information structure. */
- typedef struct
- {
- uint32_t SequenceNumberIn; /**< Current TCP sequence number for host-to-device */
- uint32_t SequenceNumberOut; /**< Current TCP sequence number for device-to-host */
- TCP_ConnectionBuffer_t Buffer; /**< Connection application data buffer */
- } TCP_ConnectionInfo_t;
-
- /** Type define for a complete TCP connection state. */
- typedef struct
- {
- uint16_t Port; /**< Connection port number on the device */
- uint16_t RemotePort; /**< Connection port number on the host */
- IP_Address_t RemoteAddress; /**< Connection protocol IP address of the host */
- TCP_ConnectionInfo_t Info; /**< Connection information, including application buffer */
- uint8_t State; /**< Current connection state, a value from the \ref TCP_ConnectionStates_t enum */
- } TCP_ConnectionState_t;
-
- /** Type define for a TCP port state. */
- typedef struct
- {
- uint16_t Port; /**< TCP port number on the device */
- uint8_t State; /**< Current port state, a value from the \ref TCP_PortStates_t enum */
- void (*ApplicationHandler) (TCP_ConnectionState_t* ConnectionState,
- TCP_ConnectionBuffer_t* Buffer); /**< Port application handler */
- } TCP_PortState_t;
-
- /** Type define for a TCP packet header. */
- typedef struct
- {
- uint16_t SourcePort; /**< Source port of the TCP packet */
- uint16_t DestinationPort; /**< Destination port of the TCP packet */
-
- uint32_t SequenceNumber; /**< Data sequence number of the packet */
- uint32_t AcknowledgmentNumber; /**< Data acknowledgment number of the packet */
-
- unsigned Reserved : 4; /**< Reserved, must be all 0 */
- unsigned DataOffset : 4; /**< Offset of the data from the start of the header, in 4 byte chunks */
- uint8_t Flags; /**< TCP packet flags */
- uint16_t WindowSize; /**< Current data window size (bytes remaining in reception buffer) */
-
- uint16_t Checksum; /**< TCP checksum */
- uint16_t UrgentPointer; /**< Urgent data pointer */
- } TCP_Header_t;
-
- /* Function Prototypes: */
- void TCP_TCPTask(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo,
- Ethernet_Frame_Info_t* const FrameOUT);
- void TCP_Init(void);
- bool TCP_SetPortState(const uint16_t Port,
- const uint8_t State,
- void (*Handler)(TCP_ConnectionState_t*, TCP_ConnectionBuffer_t*));
- uint8_t TCP_GetPortState(const uint16_t Port);
- bool TCP_SetConnectionState(const uint16_t Port,
- const IP_Address_t* RemoteAddress,
- const uint16_t RemotePort,
- const uint8_t State);
- uint8_t TCP_GetConnectionState(const uint16_t Port,
- const IP_Address_t* RemoteAddress,
- const uint16_t RemotePort);
- TCP_ConnectionInfo_t* TCP_GetConnectionInfo(const uint16_t Port,
- const IP_Address_t* RemoteAddress,
- const uint16_t RemotePort);
- int16_t TCP_ProcessTCPPacket(void* IPHeaderInStart,
- void* TCPHeaderInStart,
- void* TCPHeaderOutStart);
-
- #if defined(INCLUDE_FROM_TCP_C)
- static uint16_t TCP_Checksum16(void* TCPHeaderOutStart,
- const IP_Address_t* SourceAddress,
- const IP_Address_t* DestinationAddress,
- uint16_t TCPOutSize);
- #endif
-
-#endif
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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
- *
- * User Datagram Protocol (UDP) packet handling routines. This protocol handles high throughput, low
- * reliability packets which are typically used to encapsulate streaming data.
- */
-
-#define INCLUDE_FROM_UDP_C
-#include "UDP.h"
-
-/** Processes a UDP packet inside an Ethernet frame, and writes the appropriate response
- * to the output Ethernet frame if a sub-protocol handler has created a response packet.
- *
- * \param[in] IPHeaderInStart Pointer to the start of the incoming packet's IP header
- * \param[in] UDPHeaderInStart Pointer to the start of the incoming packet's UDP header
- * \param[out] UDPHeaderOutStart Pointer to the start of the outgoing packet's UDP header
- *
- * \return The number of bytes written to the out Ethernet frame if any, NO_RESPONSE otherwise
- */
-int16_t UDP_ProcessUDPPacket(void* IPHeaderInStart,
- void* UDPHeaderInStart,
- void* UDPHeaderOutStart)
-{
- UDP_Header_t* UDPHeaderIN = (UDP_Header_t*)UDPHeaderInStart;
- UDP_Header_t* UDPHeaderOUT = (UDP_Header_t*)UDPHeaderOutStart;
-
- int16_t RetSize = NO_RESPONSE;
-
- DecodeUDPHeader(UDPHeaderInStart);
-
- switch (SwapEndian_16(UDPHeaderIN->DestinationPort))
- {
- case UDP_PORT_DHCP_REQUEST:
- RetSize = DHCP_ProcessDHCPPacket(IPHeaderInStart,
- &((uint8_t*)UDPHeaderInStart)[sizeof(UDP_Header_t)],
- &((uint8_t*)UDPHeaderOutStart)[sizeof(UDP_Header_t)]);
- break;
- }
-
- /* Check to see if the protocol processing routine has filled out a response */
- if (RetSize > 0)
- {
- /* Fill out the response UDP packet header */
- UDPHeaderOUT->SourcePort = UDPHeaderIN->DestinationPort;
- UDPHeaderOUT->DestinationPort = UDPHeaderIN->SourcePort;
- UDPHeaderOUT->Checksum = 0;
- UDPHeaderOUT->Length = SwapEndian_16(sizeof(UDP_Header_t) + RetSize);
-
- /* Return the size of the response so far */
- return (sizeof(UDP_Header_t) + RetSize);
- }
-
- return NO_RESPONSE;
-}
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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 UDP.c.
- */
-
-#ifndef _UDP_H_
-#define _UDP_H_
-
- /* Includes: */
- #include <avr/io.h>
-
- #include "EthernetProtocols.h"
- #include "Ethernet.h"
- #include "ProtocolDecoders.h"
- #include "DHCP.h"
-
- /* Macros: */
- /** Source UDP port for a DHCP request. */
- #define UDP_PORT_DHCP_REQUEST 67
-
- /** Destination UDP port for a DHCP reply. */
- #define UDP_PORT_DHCP_REPLY 68
-
- /* Type Defines: */
- /** Type define for a UDP packet header. */
- typedef struct
- {
- uint16_t SourcePort; /**< Packet source port */
- uint16_t DestinationPort; /**< Packet destination port */
- uint16_t Length; /**< Total packet length, in bytes */
- uint16_t Checksum; /**< Optional UDP packet checksum */
- } UDP_Header_t;
-
- /* Function Prototypes: */
- int16_t UDP_ProcessUDPPacket(void* IPHeaderInStart,
- void* UDPHeaderInStart,
- void* UDPHeaderOutStart);
-
-#endif
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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
- *
- * Simple webserver application for demonstrating the RNDIS demo and TCP/IP stack. This
- * application will serve up a static HTTP web page when requested by the host.
- */
-
-#include "Webserver.h"
-
-/** HTTP server response header, for transmission before the page contents. This indicates to the host that a page exists at the
- * given location, and gives extra connection information.
- */
-const char HTTP200Header[] PROGMEM = "HTTP/1.1 200 OK\r\n"
- "Server: LUFA RNDIS\r\n"
- "Content-type: text/html\r\n"
- "Connection: close\r\n\r\n";
-
-/** HTTP server response header, for transmission before a resource not found error. This indicates to the host that the given
- * given URL is invalid, and gives extra error information.
- */
-const char HTTP404Header[] PROGMEM = "HTTP/1.1 404 Not Found\r\n"
- "Server: LUFA RNDIS\r\n"
- "Connection: close\r\n\r\n";
-
-/** HTTP page to serve to the host when a HTTP request is made. This page is too long for a single response, thus it is automatically
- * broken up into smaller blocks and sent as a series of packets each time the webserver application callback is run.
- */
-const char HTTPPage[] PROGMEM =
- "<html>"
- " <head>"
- " <title>"
- " LUFA Webserver Demo"
- " </title>"
- " </head>"
- " <body>"
- " <h1>Hello from your USB AVR!</h1>"
- " <p>"
- " Hello! Welcome to the LUFA RNDIS Demo Webserver test page, running on your USB AVR via the LUFA library. This demonstrates the HTTP webserver, TCP/IP stack and RNDIS demo all running atop the LUFA USB stack."
- " <br /><br />"
- " <small>Project Information: <a href=\"http://www.lufa-lib.org\">http://www.lufa-lib.org</a>.</small>"
- " <hr />"
- " <i>LUFA Version: </i>" LUFA_VERSION_STRING
- " </p>"
- " </body>"
- "</html>";
-
-
-/** Initializes the Webserver application, opening the appropriate HTTP port in the TCP handler and registering the application
- * callback routine for packets sent to the HTTP protocol port.
- */
-void Webserver_Init(void)
-{
- /* Open the HTTP port in the TCP protocol so that HTTP connections to the device can be established */
- TCP_SetPortState(TCP_PORT_HTTP, TCP_Port_Open, Webserver_ApplicationCallback);
-}
-
-/** Indicates if a given request equals the given HTTP command.
- *
- * \param[in] RequestHeader HTTP request made by the host
- * \param[in] Command HTTP command to compare the request to
- *
- * \return Boolean \c true if the command matches the request, \c false otherwise
- */
-static bool IsHTTPCommand(uint8_t* RequestHeader,
- char* Command)
-{
- /* Returns true if the non null terminated string in RequestHeader matches the null terminated string Command */
- return (strncmp((char*)RequestHeader, Command, strlen(Command)) == 0);
-}
-
-/** Application callback routine, executed each time the TCP processing task runs. This callback determines what request
- * has been made (if any), and serves up appropriate responses.
- *
- * \param[in] ConnectionState Pointer to a TCP Connection State structure giving connection information
- * \param[in,out] Buffer Pointer to the application's send/receive packet buffer
- */
-void Webserver_ApplicationCallback(TCP_ConnectionState_t* const ConnectionState,
- TCP_ConnectionBuffer_t* const Buffer)
-{
- char* BufferDataStr = (char*)Buffer->Data;
- static uint8_t PageBlock = 0;
-
- /* Check to see if a packet has been received on the HTTP port from a remote host */
- if (TCP_APP_HAS_RECEIVED_PACKET(Buffer))
- {
- if (IsHTTPCommand(Buffer->Data, "GET"))
- {
- if (IsHTTPCommand(Buffer->Data, "GET / "))
- {
- PageBlock = 0;
-
- /* Copy the HTTP 200 response header into the packet buffer */
- strcpy_P(BufferDataStr, HTTP200Header);
-
- /* Send the buffer contents to the host */
- TCP_APP_SEND_BUFFER(Buffer, strlen(BufferDataStr));
-
- /* Lock the buffer to Device->Host transmissions only while we send the page contents */
- TCP_APP_CAPTURE_BUFFER(Buffer);
- }
- else
- {
- /* Copy the HTTP 404 response header into the packet buffer */
- strcpy_P(BufferDataStr, HTTP404Header);
-
- /* Send the buffer contents to the host */
- TCP_APP_SEND_BUFFER(Buffer, strlen(BufferDataStr));
-
- /* All data sent, close the connection */
- TCP_APP_CLOSECONNECTION(ConnectionState);
- }
- }
- else if (IsHTTPCommand(Buffer->Data, "HEAD"))
- {
- if (IsHTTPCommand(Buffer->Data, "HEAD / "))
- {
- /* Copy the HTTP response header into the packet buffer */
- strcpy_P(BufferDataStr, HTTP200Header);
-
- /* Send the buffer contents to the host */
- TCP_APP_SEND_BUFFER(Buffer, strlen(BufferDataStr));
- }
- else
- {
- /* Copy the HTTP response header into the packet buffer */
- strcpy_P(BufferDataStr, HTTP404Header);
-
- /* Send the buffer contents to the host */
- TCP_APP_SEND_BUFFER(Buffer, strlen(BufferDataStr));
- }
-
- /* All data sent, close the connection */
- TCP_APP_CLOSECONNECTION(ConnectionState);
- }
- else if (IsHTTPCommand(Buffer->Data, "TRACE"))
- {
- /* Echo the host's query back to the host */
- TCP_APP_SEND_BUFFER(Buffer, Buffer->Length);
-
- /* All data sent, close the connection */
- TCP_APP_CLOSECONNECTION(ConnectionState);
- }
- else
- {
- /* Unknown request, just clear the buffer (drop the packet) */
- TCP_APP_CLEAR_BUFFER(Buffer);
- }
- }
- else if (TCP_APP_HAVE_CAPTURED_BUFFER(Buffer))
- {
- uint16_t RemLength = strlen_P(&HTTPPage[PageBlock * HTTP_REPLY_BLOCK_SIZE]);
- uint16_t Length;
-
- /* Determine the length of the loaded block */
- Length = ((RemLength > HTTP_REPLY_BLOCK_SIZE) ? HTTP_REPLY_BLOCK_SIZE : RemLength);
-
- /* Copy the next buffer sized block of the page to the packet buffer */
- strncpy_P(BufferDataStr, &HTTPPage[PageBlock * HTTP_REPLY_BLOCK_SIZE], Length);
-
- /* Send the buffer contents to the host */
- TCP_APP_SEND_BUFFER(Buffer, Length);
-
- /* Check to see if the entire page has been sent */
- if (PageBlock++ == (sizeof(HTTPPage) / HTTP_REPLY_BLOCK_SIZE))
- {
- /* Unlock the buffer so that the host can fill it with future packets */
- TCP_APP_RELEASE_BUFFER(Buffer);
-
- /* Close the connection to the host */
- TCP_APP_CLOSECONNECTION(ConnectionState);
- }
- }
-}
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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 Webserver.c.
- */
-
-#ifndef _WEBSERVER_H_
-#define _WEBSERVER_H_
-
- /* Includes: */
- #include <avr/io.h>
- #include <avr/pgmspace.h>
-
- #include <LUFA/Version.h>
-
- #include "TCP.h"
-
- /* Macros: */
- /** Maximum size of a HTTP response per transmission */
- #define HTTP_REPLY_BLOCK_SIZE 128
-
- /* Function Prototypes: */
- void Webserver_Init(void);
- void Webserver_ApplicationCallback(TCP_ConnectionState_t* const ConnectionState,
- TCP_ConnectionBuffer_t* const Buffer);
-
-#endif
-
{
SetupHardware();
- TCP_Init();
- Webserver_Init();
-
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
GlobalInterruptEnable();
{
LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
- RNDIS_Device_ReadPacket(&Ethernet_RNDIS_Interface, &FrameIN.FrameData, &FrameIN.FrameLength);
- Ethernet_ProcessPacket(&FrameIN, &FrameOUT);
+ RNDIS_Device_ReadPacket(&Ethernet_RNDIS_Interface, FrameIN.FrameData, sizeof(FrameIN.FrameData), &FrameIN.FrameLength);
+
+ // TODO: Process FrameIN here, and optionally fill FrameOUT.
if (FrameOUT.FrameLength)
{
LEDs_SetAllLEDs(LEDMASK_USB_READY);
}
- TCP_TCPTask(&Ethernet_RNDIS_Interface, &FrameOUT);
-
RNDIS_Device_USBTask(&Ethernet_RNDIS_Interface);
USB_USBTask();
}
#include "Descriptors.h"
- #include "Lib/Ethernet.h"
- #include "Lib/TCP.h"
- #include "Lib/ARP.h"
- #include "Lib/Webserver.h"
#include "Config/AppConfig.h"
#include <LUFA/Drivers/Board/LEDs.h>
/** LED mask for the library LED driver, to indicate that the USB interface is busy. */
#define LEDMASK_USB_BUSY LEDS_LED2
+ /* Type Defines: */
+ /** Type define for an Ethernet frame buffer data and information structure. */
+ typedef struct
+ {
+ uint8_t FrameData[ETHERNET_FRAME_SIZE_MAX]; /**< Ethernet frame contents. */
+ uint16_t FrameLength; /**< Length in bytes of the Ethernet frame stored in the buffer. */
+ } Ethernet_Frame_Info_t;
+
/* Function Prototypes: */
void SetupHardware(void);
* documentation pages. It is not a project source file.
*/
-/** \mainpage RNDIS Class Ethernet Demo (with Webserver/Telnet)
+/** \mainpage RNDIS Class Ethernet Demo
*
* \section Sec_Compat Demo Compatibility:
*
* This gives a simple reference application for implementing
* a CDC RNDIS device acting as a simple network interface for
* ethernet packet exchange. RNDIS is a proprietary Microsoft
- * standard; this demo will only work on Windows 2000 (manually
- * patched with the Microsoft RNDIS hotfix) and above (with no
- * manual patches), or on the latest Linux kernels.
+ * standard; this demo will only work on Windows XP, or on modern
+ * Linux kernels.
*
* Before running, you will need to install the INF file that
* is located in the RNDISEthernet project directory. This will
*
* When enumerated, this demo will install as a new network
* adapter which ethernet packets can be sent to and received
- * from. Running on top of the adapter is a very simple TCP/IP
- * stack with a HTTP webserver and TELNET host which can be
- * accessed through a web browser at IP address 10.0.0.2:80 or
- * through a TELNET client at 10.0.0.2:25. This device also supports
- * ping echos via the ICMP protocol.
- *
- * \note The TCP/IP stack in this demo has a number of limitations
- * and should serve as an example only - it is not fully featured nor
- * compliant to the TCP/IP specification. For complete projects, it is
- * recommended that it be replaced with an external open source TCP/IP
- * stack that is feature complete, such as the uIP stack.
+ * from. When packets are received from the host, the on-board LEDs should
+ * flash.
*
* \section Sec_Options Project Options
*
* <th><b>Description:</b></th>
* </tr>
* <tr>
- * <td>CLIENT_IP_ADDRESS</td>
- * <td>AppConfig.h</td>
- * <td>Configures the IP address given to the client (PC) via the DHCP server.</td>
- * </tr>
- * <tr>
- * <td>SERVER_IP_ADDRESS</td>
- * <td>AppConfig.h</td>
- * <td>Configures the IP address of the virtual server.</td>
- * </tr>
- * <tr>
* <td>ADAPTER_MAC_ADDRESS</td>
* <td>AppConfig.h</td>
* <td>Configures the MAC address of the RNDIS adapter on the host (PC) side.</td>
* </tr>
- * <tr>
- * <td>SERVER_MAC_ADDRESS</td>
- * <td>AppConfig.h</td>
- * <td>Configures the MAC address of the virtual server on the network.</td>
- * </tr>
- * <tr>
- * <td>NO_DECODE_ETHERNET</td>
- * <td>AppConfig.h</td>
- * <td>When defined, received Ethernet headers will not be decoded and printed to the device serial port.</td>
- * </tr>
- * <tr>
- * <td>NO_DECODE_ARP</td>
- * <td>AppConfig.h</td>
- * <td>When defined, received ARP headers will not be decoded and printed to the device serial port.</td>
- * </tr>
- * <tr>
- * <td>NO_DECODE_IP</td>
- * <td>AppConfig.h</td>
- * <td>When defined, received IP headers will not be decoded and printed to the device serial port.</td>
- * </tr>
- * <tr>
- * <td>NO_DECODE_ICMP</td>
- * <td>AppConfig.h</td>
- * <td>When defined, received ICMP headers will not be decoded and printed to the device serial port.</td>
- * </tr>
- * <tr>
- * <td>NO_DECODE_TCP</td>
- * <td>AppConfig.h</td>
- * <td>When defined, received TCP headers will not be decoded and printed to the device serial port.</td>
- * </tr>
- * <tr>
- * <td>NO_DECODE_UDP</td>
- * <td>AppConfig.h</td>
- * <td>When defined, received UDP headers will not be decoded and printed to the device serial port.</td>
- * </tr>
- * <tr>
- * <td>NO_DECODE_DHCP</td>
- * <td>AppConfig.h</td>
- * <td>When defined, received DHCP headers will not be decoded and printed to the device serial port.</td>
- * </tr>
* </table>
*/
F_USB = $(F_CPU)
OPTIMIZATION = s
TARGET = RNDISEthernet
-SRC = $(TARGET).c Descriptors.c Lib/Ethernet.c Lib/ProtocolDecoders.c Lib/ICMP.c Lib/TCP.c Lib/UDP.c Lib/DHCP.c Lib/ARP.c \
- Lib/IP.c Lib/Webserver.c $(LUFA_SRC_USB) $(LUFA_SRC_USBCLASS) $(LUFA_SRC_SERIAL)
+SRC = $(TARGET).c Descriptors.c $(LUFA_SRC_USB) $(LUFA_SRC_USBCLASS) $(LUFA_SRC_SERIAL)
LUFA_PATH = ../../../../LUFA
CC_FLAGS = -DUSE_LUFA_CONFIG_HEADER -IConfig/
LD_FLAGS =
#ifndef _APP_CONFIG_H_
#define _APP_CONFIG_H_
- #define CLIENT_IP_ADDRESS { 10, 0, 0, 1}
- #define SERVER_IP_ADDRESS { 10, 0, 0, 2}
-
#define ADAPTER_MAC_ADDRESS {0x02, 0x00, 0x02, 0x00, 0x02, 0x00}
- #define SERVER_MAC_ADDRESS {0x00, 0x01, 0x00, 0x01, 0x00, 0x01}
-
- #define NO_DECODE_ETHERNET
- #define NO_DECODE_ARP
- #define NO_DECODE_IP
- #define NO_DECODE_ICMP
- #define NO_DECODE_TCP
- #define NO_DECODE_UDP
- #define NO_DECODE_DHCP
#endif
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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
- *
- * Address Resolution Protocol (ARP) packet handling routines. This protocol handles the
- * conversion of physical MAC addresses to protocol IP addresses between the host and the
- * device.
- */
-
-#include "ARP.h"
-
-/** Processes an ARP packet inside an Ethernet frame, and writes the appropriate response
- * to the output Ethernet frame if the host is requesting the IP or MAC address of the
- * virtual server device on the network.
- *
- * \param[in] InDataStart Pointer to the start of the incoming packet's ARP header
- * \param[out] OutDataStart Pointer to the start of the outgoing packet's ARP header
- *
- * \return The number of bytes written to the out Ethernet frame if any, NO_RESPONSE otherwise
- */
-int16_t ARP_ProcessARPPacket(void* InDataStart,
- void* OutDataStart)
-{
- DecodeARPHeader(InDataStart);
-
- ARP_Header_t* ARPHeaderIN = (ARP_Header_t*)InDataStart;
- ARP_Header_t* ARPHeaderOUT = (ARP_Header_t*)OutDataStart;
-
- /* Ensure that the ARP request is a IPv4 request packet */
- if ((SwapEndian_16(ARPHeaderIN->ProtocolType) == ETHERTYPE_IPV4) &&
- (SwapEndian_16(ARPHeaderIN->Operation) == ARP_OPERATION_REQUEST))
- {
- /* If the ARP packet is requesting the MAC or IP of the virtual webserver, return the response */
- if (IP_COMPARE(&ARPHeaderIN->TPA, &ServerIPAddress) ||
- MAC_COMPARE(&ARPHeaderIN->THA, &ServerMACAddress))
- {
- /* Fill out the ARP response header */
- ARPHeaderOUT->HardwareType = ARPHeaderIN->HardwareType;
- ARPHeaderOUT->ProtocolType = ARPHeaderIN->ProtocolType;
- ARPHeaderOUT->HLEN = ARPHeaderIN->HLEN;
- ARPHeaderOUT->PLEN = ARPHeaderIN->PLEN;
- ARPHeaderOUT->Operation = SwapEndian_16(ARP_OPERATION_REPLY);
-
- /* Copy over the sender MAC/IP to the target fields for the response */
- ARPHeaderOUT->THA = ARPHeaderIN->SHA;
- ARPHeaderOUT->TPA = ARPHeaderIN->SPA;
-
- /* Copy over the new sender MAC/IP - MAC and IP addresses of the virtual webserver */
- ARPHeaderOUT->SHA = ServerMACAddress;
- ARPHeaderOUT->SPA = ServerIPAddress;
-
- /* Return the size of the response so far */
- return sizeof(ARP_Header_t);
- }
- }
-
- return NO_RESPONSE;
-}
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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 ARP.c.
- */
-
-#ifndef _ARP_H_
-#define _ARP_H_
-
- /* Includes: */
- #include <avr/io.h>
- #include <string.h>
-
- #include <LUFA/Drivers/USB/USB.h>
-
- #include "EthernetProtocols.h"
- #include "Ethernet.h"
- #include "ProtocolDecoders.h"
-
- /* Macros: */
- /** ARP header operation constant, indicating a request from a host for an address translation. */
- #define ARP_OPERATION_REQUEST 1
-
- /** ARP header operation constant, indicating a reply from a host giving an address translation. */
- #define ARP_OPERATION_REPLY 2
-
- /* Type Defines: */
- /** Type define for an ARP packet inside an Ethernet frame. */
- typedef struct
- {
- uint16_t HardwareType; /**< Hardware type constant, indicating the hardware used */
- uint16_t ProtocolType; /**< Protocol being resolved, usually ETHERTYPE_IPV4 */
-
- uint8_t HLEN; /**< Length in bytes of the source/destination hardware addresses */
- uint8_t PLEN; /**< Length in bytes of the source/destination protocol addresses */
- uint16_t Operation; /**< Type of operation, either ARP_OPERATION_REQUEST or ARP_OPERATION_REPLY */
-
- MAC_Address_t SHA; /**< Sender's hardware address */
- IP_Address_t SPA; /**< Sender's protocol address */
- MAC_Address_t THA; /**< Target's hardware address */
- IP_Address_t TPA; /**< Target's protocol address */
- } ARP_Header_t;
-
- /* Function Prototypes: */
- int16_t ARP_ProcessARPPacket(void* InDataStart,
- void* OutDataStart);
-
-#endif
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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
- *
- * Dynamic Host Configuration Protocol (DHCP) packet handling routines. This protocol
- * handles the automatic IP negotiation to the host, so that the host will use the provided
- * IP address given to it by the device.
- */
-
-#include "DHCP.h"
-
-/** Processes a DHCP packet inside an Ethernet frame, and writes the appropriate response
- * to the output Ethernet frame if the host is requesting or accepting an IP address.
- *
- * \param[in] IPHeaderInStart Pointer to the start of the incoming packet's IP header
- * \param[in] DHCPHeaderInStart Pointer to the start of the incoming packet's DHCP header
- * \param[out] DHCPHeaderOutStart Pointer to the start of the outgoing packet's DHCP header
- *
- * \return The number of bytes written to the out Ethernet frame if any, NO_RESPONSE otherwise
- */
-int16_t DHCP_ProcessDHCPPacket(void* IPHeaderInStart,
- void* DHCPHeaderInStart,
- void* DHCPHeaderOutStart)
-{
- IP_Header_t* IPHeaderIN = (IP_Header_t*)IPHeaderInStart;
- DHCP_Header_t* DHCPHeaderIN = (DHCP_Header_t*)DHCPHeaderInStart;
- DHCP_Header_t* DHCPHeaderOUT = (DHCP_Header_t*)DHCPHeaderOutStart;
-
- uint8_t* DHCPOptionsINStart = ((uint8_t*)DHCPHeaderInStart + sizeof(DHCP_Header_t));
- uint8_t* DHCPOptionsOUTStart = ((uint8_t*)DHCPHeaderOutStart + sizeof(DHCP_Header_t));
-
- DecodeDHCPHeader(DHCPHeaderInStart);
-
- /* Zero out the response DHCP packet, as much of it is legacy and left at 0 */
- memset(DHCPHeaderOUT, 0, sizeof(DHCP_Header_t));
-
- /* Fill out the response DHCP packet */
- DHCPHeaderOUT->HardwareType = DHCPHeaderIN->HardwareType;
- DHCPHeaderOUT->Operation = DHCP_OP_BOOTREPLY;
- DHCPHeaderOUT->HardwareAddressLength = DHCPHeaderIN->HardwareAddressLength;
- DHCPHeaderOUT->Hops = 0;
- DHCPHeaderOUT->TransactionID = DHCPHeaderIN->TransactionID;
- DHCPHeaderOUT->ElapsedSeconds = 0;
- DHCPHeaderOUT->Flags = DHCPHeaderIN->Flags;
- DHCPHeaderOUT->YourIP = ClientIPAddress;
- memmove(&DHCPHeaderOUT->ClientHardwareAddress, &DHCPHeaderIN->ClientHardwareAddress, sizeof(MAC_Address_t));
- DHCPHeaderOUT->Cookie = SwapEndian_32(DHCP_MAGIC_COOKIE);
-
- /* Alter the incoming IP packet header so that the corrected IP source and destinations are used - this means that
- when the response IP header is generated, it will use the corrected addresses and not the null/broatcast addresses */
- IPHeaderIN->SourceAddress = ClientIPAddress;
- IPHeaderIN->DestinationAddress = ServerIPAddress;
-
- /* Process the incoming DHCP packet options */
- while (DHCPOptionsINStart[0] != DHCP_OPTION_END)
- {
- /* Find the Message Type DHCP option, to determine the type of DHCP packet */
- if (DHCPOptionsINStart[0] == DHCP_OPTION_MESSAGETYPE)
- {
- if ((DHCPOptionsINStart[2] == DHCP_MESSAGETYPE_DISCOVER) || (DHCPOptionsINStart[2] == DHCP_MESSAGETYPE_REQUEST))
- {
- /* Fill out the response DHCP packet options for a DHCP OFFER or ACK response */
-
- *(DHCPOptionsOUTStart++) = DHCP_OPTION_MESSAGETYPE;
- *(DHCPOptionsOUTStart++) = 1;
- *(DHCPOptionsOUTStart++) = (DHCPOptionsINStart[2] == DHCP_MESSAGETYPE_DISCOVER) ? DHCP_MESSAGETYPE_OFFER
- : DHCP_MESSAGETYPE_ACK;
-
- *(DHCPOptionsOUTStart++) = DHCP_OPTION_SUBNETMASK;
- *(DHCPOptionsOUTStart++) = sizeof(IP_Address_t);
- *(DHCPOptionsOUTStart++) = 0xFF;
- *(DHCPOptionsOUTStart++) = 0xFF;
- *(DHCPOptionsOUTStart++) = 0xFF;
- *(DHCPOptionsOUTStart++) = 0x00;
-
- *(DHCPOptionsOUTStart++) = DHCP_OPTION_LEASETIME;
- *(DHCPOptionsOUTStart++) = sizeof(uint32_t);
- /* Lease Time 86400s (ONE_DAY) */
- *(DHCPOptionsOUTStart++) = 0x00;
- *(DHCPOptionsOUTStart++) = 0x01;
- *(DHCPOptionsOUTStart++) = 0x51;
- *(DHCPOptionsOUTStart++) = 0x80;
-
- *(DHCPOptionsOUTStart++) = DHCP_OPTION_DHCPSERVER;
- *(DHCPOptionsOUTStart++) = sizeof(IP_Address_t);
- memcpy(DHCPOptionsOUTStart, &ServerIPAddress, sizeof(IP_Address_t));
- DHCPOptionsOUTStart += sizeof(IP_Address_t);
-
- *(DHCPOptionsOUTStart++) = DHCP_OPTION_END;
-
- return (sizeof(DHCP_Header_t) + 18 + sizeof(IP_Address_t));
- }
- }
-
- /* Go to the next DHCP option - skip one byte if option is a padding byte, else skip the complete option's size */
- DHCPOptionsINStart += ((DHCPOptionsINStart[0] == DHCP_OPTION_PAD) ? 1 : (DHCPOptionsINStart[1] + 2));
- }
-
- return NO_RESPONSE;
-}
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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 DHCP.c.
- */
-
-#ifndef _DHCP_H_
-#define _DHCP_H_
-
- /* Includes: */
- #include <avr/io.h>
- #include <string.h>
-
- #include "EthernetProtocols.h"
- #include "Ethernet.h"
- #include "ProtocolDecoders.h"
-
- /* Macros: */
- /** DHCP operation constant, indicating a request from a host to a DHCP server. */
- #define DHCP_OP_BOOTREQUEST 0x01
-
- /** DHCP operation constant, indicating a reply from a DHCP server to a host. */
- #define DHCP_OP_BOOTREPLY 0x02
-
- /** Hardware type constant, indicating Ethernet as a carrier. */
- #define DHCP_HTYPE_ETHERNET 0x01
-
- /** Magic boot protocol "cookie", inserted into all BOOTP packets (BOOTP is the carrier of DHCP). */
- #define DHCP_MAGIC_COOKIE 0x63825363
-
- /** DHCP option list entry header, indicating that a subnet mask will follow. */
- #define DHCP_OPTION_SUBNETMASK 1
-
- /** DHCP option list entry header, indicating that the Lease Time will follow. */
- #define DHCP_OPTION_LEASETIME 51
-
- /** DHCP option list entry header, indicating that the DHCP message type constant will follow. */
- #define DHCP_OPTION_MESSAGETYPE 53
-
- /** DHCP option list entry header, indicating that the IP address of the DHCP server will follow. */
- #define DHCP_OPTION_DHCPSERVER 54
-
- /** DHCP option list entry header, used to pad out option data. */
- #define DHCP_OPTION_PAD 0
-
- /** DHCP option list entry header, indicating the end of option data. */
- #define DHCP_OPTION_END 255
-
- /** Message type constant, used in the DHCP option data field, requesting that a DHCP server offer an IP address. */
- #define DHCP_MESSAGETYPE_DISCOVER 1
-
- /** Message type constant, used in the DHCP option data field, indicating that a DHCP server is offering an IP address. */
- #define DHCP_MESSAGETYPE_OFFER 2
-
- /** Message type constant, used in the DHCP option data field, requesting that a DHCP server lease a given IP address. */
- #define DHCP_MESSAGETYPE_REQUEST 3
-
- /** Message type constant, used in the DHCP option data field, declining an offered DHCP server IP address lease. */
- #define DHCP_MESSAGETYPE_DECLINE 4
-
- /** Message type constant, used in the DHCP option data field, ACKing a host IP lease request. */
- #define DHCP_MESSAGETYPE_ACK 5
-
- /** Message type constant, used in the DHCP option data field, NACKing a host IP lease request. */
- #define DHCP_MESSAGETYPE_NACK 6
-
- /** Message type constant, used in the DHCP option data field, indicating that a host is releasing a leased IP address. */
- #define DHCP_MESSAGETYPE_RELEASE 7
-
- /* 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 */
-
- IP_Address_t ClientIP; /**< Client IP address, if already leased an IP */
- IP_Address_t YourIP; /**< Client IP address */
- IP_Address_t NextServerIP; /**< Legacy BOOTP protocol field, unused for DHCP */
- IP_Address_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 */
- } DHCP_Header_t;
-
- /* Function Prototypes: */
- int16_t DHCP_ProcessDHCPPacket(void* IPHeaderInStart,
- void* DHCPHeaderInStart,
- void* DHCPHeaderOutStart);
-
-#endif
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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
- *
- * Ethernet frame packet handling routines. This protocol handles the processing of raw Ethernet
- * frames sent and received, deferring the processing of sub-packet protocols to the appropriate
- * protocol handlers, such as DHCP or ARP.
- */
-
-#include "Ethernet.h"
-
-/** Ethernet Frame buffer structure, to hold the incoming Ethernet frame from the host. */
-Ethernet_Frame_Info_t FrameIN;
-
-/** Ethernet Frame buffer structure, to hold the outgoing Ethernet frame to the host. */
-Ethernet_Frame_Info_t FrameOUT;
-
-/** Constant for convenience when checking against or setting a MAC address to the virtual server MAC address. */
-const MAC_Address_t ServerMACAddress = {SERVER_MAC_ADDRESS};
-
-/** Constant for convenience when checking against or setting an IP address to the virtual server IP address. */
-const IP_Address_t ServerIPAddress = {SERVER_IP_ADDRESS};
-
-/** Constant for convenience when checking against or setting a MAC address to the broadcast MAC address. */
-const MAC_Address_t BroadcastMACAddress = {BROADCAST_MAC_ADDRESS};
-
-/** Constant for convenience when checking against or setting a IP address to the broadcast IP address. */
-const IP_Address_t BroadcastIPAddress = {BROADCAST_IP_ADDRESS};
-
-/** Constant for convenience when checking against or setting an IP address to the client (host) IP address. */
-const IP_Address_t ClientIPAddress = {CLIENT_IP_ADDRESS};
-
-
-/** Processes an incoming Ethernet frame, and writes the appropriate response to the output Ethernet
- * frame buffer if the sub protocol handlers create a valid response.
- */
-void Ethernet_ProcessPacket(void)
-{
- DecodeEthernetFrameHeader(FrameIN.FrameData);
-
- /* Cast the incoming Ethernet frame to the Ethernet header type */
- Ethernet_Frame_Header_t* FrameINHeader = (Ethernet_Frame_Header_t*)&FrameIN.FrameData;
- Ethernet_Frame_Header_t* FrameOUTHeader = (Ethernet_Frame_Header_t*)&FrameOUT.FrameData;
-
- int16_t RetSize = NO_RESPONSE;
-
- /* Ensure frame is addressed to either all (broadcast) or the virtual webserver, and is a type II frame */
- if ((MAC_COMPARE(&FrameINHeader->Destination, &ServerMACAddress) ||
- MAC_COMPARE(&FrameINHeader->Destination, &BroadcastMACAddress)) &&
- (SwapEndian_16(FrameIN.FrameLength) > ETHERNET_VER2_MINSIZE))
- {
- /* Process the packet depending on its protocol */
- switch (SwapEndian_16(FrameINHeader->EtherType))
- {
- case ETHERTYPE_ARP:
- RetSize = ARP_ProcessARPPacket(&FrameIN.FrameData[sizeof(Ethernet_Frame_Header_t)],
- &FrameOUT.FrameData[sizeof(Ethernet_Frame_Header_t)]);
- break;
- case ETHERTYPE_IPV4:
- RetSize = IP_ProcessIPPacket(&FrameIN.FrameData[sizeof(Ethernet_Frame_Header_t)],
- &FrameOUT.FrameData[sizeof(Ethernet_Frame_Header_t)]);
- break;
- }
-
- /* Protocol processing routine has filled a response, complete the ethernet frame header */
- if (RetSize > 0)
- {
- /* Fill out the response Ethernet frame header */
- FrameOUTHeader->Source = ServerMACAddress;
- FrameOUTHeader->Destination = FrameINHeader->Source;
- FrameOUTHeader->EtherType = FrameINHeader->EtherType;
-
- /* Set the response length in the buffer and indicate that a response is ready to be sent */
- FrameOUT.FrameLength = (sizeof(Ethernet_Frame_Header_t) + RetSize);
- }
- }
-
- /* Check if the packet was processed */
- if (RetSize != NO_PROCESS)
- {
- /* Clear the frame buffer */
- FrameIN.FrameLength = 0;
- }
-}
-
-/** Calculates the appropriate ethernet checksum, consisting of the addition of the one's
- * compliment of each word, complimented.
- *
- * \param[in] Data Pointer to the packet buffer data whose checksum must be calculated
- * \param[in] Bytes Number of bytes in the data buffer to process
- *
- * \return A 16-bit Ethernet checksum value
- */
-uint16_t Ethernet_Checksum16(void* Data,
- uint16_t Bytes)
-{
- uint16_t* Words = (uint16_t*)Data;
- uint32_t Checksum = 0;
-
- for (uint16_t CurrWord = 0; CurrWord < (Bytes >> 1); CurrWord++)
- Checksum += Words[CurrWord];
-
- while (Checksum & 0xFFFF0000)
- Checksum = ((Checksum & 0xFFFF) + (Checksum >> 16));
-
- return ~Checksum;
-}
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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 Ethernet.c.
- */
-
-#ifndef _ETHERNET_H_
-#define _ETHERNET_H_
-
- /* Includes: */
- #include <avr/io.h>
- #include <string.h>
-
- #include "Config/AppConfig.h"
-
- #include "EthernetProtocols.h"
- #include "ProtocolDecoders.h"
- #include "ICMP.h"
- #include "TCP.h"
- #include "UDP.h"
- #include "DHCP.h"
- #include "ARP.h"
- #include "IP.h"
-
- /* Macros: */
- /** Physical MAC address of the network broadcast address. */
- #define BROADCAST_MAC_ADDRESS {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}
-
- /** Performs a comparison between two MAC addresses, indicating if they are identical.
- *
- * \param[in] MAC1 First MAC address
- * \param[in] MAC2 Second MAC address
- *
- * \return True if the addresses match, \c false otherwise
- */
- #define MAC_COMPARE(MAC1, MAC2) (memcmp(MAC1, MAC2, sizeof(MAC_Address_t)) == 0)
-
- /** Maximum size of an incoming or outgoing Ethernet frame in bytes. */
- #define ETHERNET_FRAME_SIZE_MAX 1500
-
- /** Minimum size of an Ethernet packet in bytes, to conform to the Ethernet V2 packet standard. */
- #define ETHERNET_VER2_MINSIZE 0x0600
-
- /** Return value for all sub protocol handling routines, indicating that no response packet has been generated. */
- #define NO_RESPONSE 0
-
- /** Return value for all sub protocol handling routines, indicating that the packet has not yet been handled. */
- #define NO_PROCESS -1
-
- /* Type Defines: */
- /** Type define for an Ethernet frame buffer data and information structure. */
- typedef struct
- {
- uint8_t FrameData[ETHERNET_FRAME_SIZE_MAX]; /**< Ethernet frame contents. */
- uint16_t FrameLength; /**< Length in bytes of the Ethernet frame stored in the buffer. */
- } Ethernet_Frame_Info_t;
-
- /** Type define for an Ethernet frame header. */
- typedef struct
- {
- MAC_Address_t Destination; /**< Physical MAC address of the packet recipient */
- MAC_Address_t Source; /**< Physics MAC address of the packet source */
- uint16_t EtherType; /**< Ethernet packet sub-protocol type, for Ethernet V2 packets */
- } Ethernet_Frame_Header_t;
-
- /* External Variables: */
- extern Ethernet_Frame_Info_t FrameIN;
- extern Ethernet_Frame_Info_t FrameOUT;
-
- extern const MAC_Address_t ServerMACAddress;
- extern const IP_Address_t ServerIPAddress;
- extern const MAC_Address_t BroadcastMACAddress;
- extern const IP_Address_t BroadcastIPAddress;
- extern const IP_Address_t ClientIPAddress;
-
- /* Function Prototypes: */
- void Ethernet_ProcessPacket(void);
- uint16_t Ethernet_Checksum16(void* Data,
- uint16_t Bytes);
-
-#endif
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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
- *
- * General Ethernet protocol constants and type defines, for use by
- * all network protocol portions of the TCP/IP stack.
- */
-
-#ifndef _ETHERNET_PROTOCOLS_H_
-#define _ETHERNET_PROTOCOLS_H_
-
- /* Macros: */
- #define ETHERTYPE_IPV4 0x0800
- #define ETHERTYPE_ARP 0x0806
- #define ETHERTYPE_RARP 0x8035
- #define ETHERTYPE_APPLETALK 0x809b
- #define ETHERTYPE_APPLETALKARP 0x80f3
- #define ETHERTYPE_IEEE8021Q 0x8100
- #define ETHERTYPE_NOVELLIPX 0x8137
- #define ETHERTYPE_NOVELL 0x8138
- #define ETHERTYPE_IPV6 0x86DD
- #define ETHERTYPE_COBRANET 0x8819
- #define ETHERTYPE_PROVIDERBRIDGING 0x88a8
- #define ETHERTYPE_MPLSUNICAST 0x8847
- #define ETHERTYPE_MPLSMULTICAST 0x8848
- #define ETHERTYPE_PPPoEDISCOVERY 0x8863
- #define ETHERTYPE_PPPoESESSION 0x8864
- #define ETHERTYPE_EAPOVERLAN 0x888E
- #define ETHERTYPE_HYPERSCSI 0x889A
- #define ETHERTYPE_ATAOVERETHERNET 0x88A2
- #define ETHERTYPE_ETHERCAT 0x88A4
- #define ETHERTYPE_SERCOSIII 0x88CD
- #define ETHERTYPE_CESoE 0x88D8
- #define ETHERTYPE_MACSECURITY 0x88E5
- #define ETHERTYPE_FIBRECHANNEL 0x8906
- #define ETHERTYPE_QINQ 0x9100
- #define ETHERTYPE_VLLT 0xCAFE
-
- #define PROTOCOL_ICMP 1
- #define PROTOCOL_IGMP 2
- #define PROTOCOL_TCP 6
- #define PROTOCOL_UDP 17
- #define PROTOCOL_OSPF 89
- #define PROTOCOL_SCTP 132
-
- /* Type Defines: */
- /** Type define for a physical MAC address of a device on a network. */
- typedef struct
- {
- uint8_t Octets[6]; /**< Individual bytes of a MAC address */
- } RNDIS_MAC_Address_t;
-
- /** Type define for a protocol IP address of a device on a network. */
- typedef struct
- {
- uint8_t Octets[4]; /**< Individual bytes of an IP address */
- } IP_Address_t;
-
-#endif
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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
- *
- * Internet Control Message Protocol (ICMP) packet handling routines. This protocol handles
- * Echo requests from the host, to indicate a successful network connection between the host
- * and the virtual server.
- */
-
-#include "ICMP.h"
-
-/** Processes an ICMP packet inside an Ethernet frame, and writes the appropriate response
- * to the output Ethernet frame if the host is issuing a ICMP ECHO request.
- *
- * \param[in] InDataStart Pointer to the start of the incoming packet's ICMP header
- * \param[out] OutDataStart Pointer to the start of the outgoing packet's ICMP header
- *
- * \return The number of bytes written to the out Ethernet frame if any, NO_RESPONSE otherwise
- */
-int16_t ICMP_ProcessICMPPacket(void* InDataStart,
- void* OutDataStart)
-{
- ICMP_Header_t* ICMPHeaderIN = (ICMP_Header_t*)InDataStart;
- ICMP_Header_t* ICMPHeaderOUT = (ICMP_Header_t*)OutDataStart;
-
- DecodeICMPHeader(InDataStart);
-
- /* Determine if the ICMP packet is an echo request (ping) */
- if (ICMPHeaderIN->Type == ICMP_TYPE_ECHOREQUEST)
- {
- /* Fill out the ICMP response packet */
- ICMPHeaderOUT->Type = ICMP_TYPE_ECHOREPLY;
- ICMPHeaderOUT->Code = 0;
- ICMPHeaderOUT->Checksum = 0;
- ICMPHeaderOUT->Id = ICMPHeaderIN->Id;
- ICMPHeaderOUT->Sequence = ICMPHeaderIN->Sequence;
-
- intptr_t DataSize = FrameIN.FrameLength - ((((intptr_t)InDataStart + sizeof(ICMP_Header_t)) - (intptr_t)FrameIN.FrameData));
-
- /* Copy the remaining payload to the response - echo requests should echo back any sent data */
- memmove(&((uint8_t*)OutDataStart)[sizeof(ICMP_Header_t)],
- &((uint8_t*)InDataStart)[sizeof(ICMP_Header_t)],
- DataSize);
-
- ICMPHeaderOUT->Checksum = Ethernet_Checksum16(ICMPHeaderOUT, (DataSize + sizeof(ICMP_Header_t)));
-
- /* Return the size of the response so far */
- return (DataSize + sizeof(ICMP_Header_t));
- }
-
- return NO_RESPONSE;
-}
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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 ICMP.c.
- */
-
-#ifndef _ICMP_H_
-#define _ICMP_H_
-
- /* Includes: */
- #include <avr/io.h>
- #include <string.h>
-
- #include "EthernetProtocols.h"
- #include "Ethernet.h"
- #include "ProtocolDecoders.h"
-
- /* Macros: */
- /** ICMP message type constant, indicating an ICMP ECHO Reply message. */
- #define ICMP_TYPE_ECHOREPLY 0
-
- /** ICMP message type constant, indicating a packet destination is unreachable. */
- #define ICMP_TYPE_DESTINATIONUNREACHABLE 3
-
- /** ICMP message type constant, indicating an ICMP Source Quench message. */
- #define ICMP_TYPE_SOURCEQUENCH 4
-
- /** ICMP message type constant, indicating an ICMP Redirect message. */
- #define ICMP_TYPE_REDIRECTMESSAGE 5
-
- /** ICMP message type constant, indicating an ICMP ECHO Request message. */
- #define ICMP_TYPE_ECHOREQUEST 8
-
- /** ICMP message type constant, indicating an ICMP Time Exceeded message. */
- #define ICMP_TYPE_TIMEEXCEEDED 11
-
- /* Type Defines: */
- /** Type define for an ICMP message header. */
- typedef struct
- {
- uint8_t Type; /**< ICMP message type, an \c ICMP_TYPE_* constant */
- uint8_t Code; /**< ICMP message code, indicating the message value */
- uint16_t Checksum; /**< Ethernet checksum of the ICMP message */
- uint16_t Id; /**< Id of the ICMP message */
- uint16_t Sequence; /**< Sequence number of the ICMP message, to link together message responses */
- } ICMP_Header_t;
-
- /* Function Prototypes: */
- int16_t ICMP_ProcessICMPPacket(void* InDataStart,
- void* OutDataStart);
-
-#endif
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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
- *
- * Internet Protocol (IP) packet handling routines. This protocol handles IP packets from the
- * host which typically encapsulate other protocols such as ICMP, UDP and TCP.
- */
-
-#include "IP.h"
-
-/** Processes an IP packet inside an Ethernet frame, and writes the appropriate response
- * to the output Ethernet frame if one is created by a sub-protocol handler.
- *
- * \param[in] InDataStart Pointer to the start of the incoming packet's IP header
- * \param[out] OutDataStart Pointer to the start of the outgoing packet's IP header
- *
- * \return The number of bytes written to the out Ethernet frame if any, NO_RESPONSE if no
- * response was generated, NO_PROCESS if the packet processing was deferred until the
- * next Ethernet packet handler iteration
- */
-int16_t IP_ProcessIPPacket(void* InDataStart,
- void* OutDataStart)
-{
- DecodeIPHeader(InDataStart);
-
- IP_Header_t* IPHeaderIN = (IP_Header_t*)InDataStart;
- IP_Header_t* IPHeaderOUT = (IP_Header_t*)OutDataStart;
-
- /* Header length is specified in number of longs in the packet header, convert to bytes */
- uint16_t HeaderLengthBytes = (IPHeaderIN->HeaderLength * sizeof(uint32_t));
-
- int16_t RetSize = NO_RESPONSE;
-
- /* Check to ensure the IP packet is addressed to the virtual webserver's IP or the broadcast IP address */
- if (!(IP_COMPARE(&IPHeaderIN->DestinationAddress, &ServerIPAddress)) &&
- !(IP_COMPARE(&IPHeaderIN->DestinationAddress, &BroadcastIPAddress)))
- {
- return NO_RESPONSE;
- }
-
- /* Pass off the IP payload to the appropriate protocol processing routine */
- switch (IPHeaderIN->Protocol)
- {
- case PROTOCOL_ICMP:
- RetSize = ICMP_ProcessICMPPacket(&((uint8_t*)InDataStart)[HeaderLengthBytes],
- &((uint8_t*)OutDataStart)[sizeof(IP_Header_t)]);
- break;
- case PROTOCOL_TCP:
- RetSize = TCP_ProcessTCPPacket(InDataStart,
- &((uint8_t*)InDataStart)[HeaderLengthBytes],
- &((uint8_t*)OutDataStart)[sizeof(IP_Header_t)]);
- break;
- case PROTOCOL_UDP:
- RetSize = UDP_ProcessUDPPacket(InDataStart,
- &((uint8_t*)InDataStart)[HeaderLengthBytes],
- &((uint8_t*)OutDataStart)[sizeof(IP_Header_t)]);
- break;
- }
-
- /* Check to see if the protocol processing routine has filled out a response */
- if (RetSize > 0)
- {
- /* Fill out the response IP packet header */
- IPHeaderOUT->TotalLength = SwapEndian_16(sizeof(IP_Header_t) + RetSize);
- IPHeaderOUT->TypeOfService = 0;
- IPHeaderOUT->HeaderLength = (sizeof(IP_Header_t) / sizeof(uint32_t));
- IPHeaderOUT->Version = 4;
- IPHeaderOUT->Flags = 0;
- IPHeaderOUT->FragmentOffset = 0;
- IPHeaderOUT->Identification = 0;
- IPHeaderOUT->HeaderChecksum = 0;
- IPHeaderOUT->Protocol = IPHeaderIN->Protocol;
- IPHeaderOUT->TTL = DEFAULT_TTL;
- IPHeaderOUT->SourceAddress = IPHeaderIN->DestinationAddress;
- IPHeaderOUT->DestinationAddress = IPHeaderIN->SourceAddress;
-
- IPHeaderOUT->HeaderChecksum = Ethernet_Checksum16(IPHeaderOUT, sizeof(IP_Header_t));
-
- /* Return the size of the response so far */
- return (sizeof(IP_Header_t) + RetSize);
- }
-
- return RetSize;
-}
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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 IP.c.
- */
-
-#ifndef _IP_H_
-#define _IP_H_
-
- /* Includes: */
- #include <avr/io.h>
- #include <string.h>
-
- #include "EthernetProtocols.h"
- #include "Ethernet.h"
- #include "ProtocolDecoders.h"
- #include "Config/AppConfig.h"
-
- /* Macros: */
- /** Protocol IP address of the broadcast address. */
- #define BROADCAST_IP_ADDRESS {0xFF, 0xFF, 0xFF, 0xFF}
-
- /** Default Time To Live (TTL) value for sent packets, indicating the maximum allowable hops until their destination
- * is reached.
- */
- #define DEFAULT_TTL 128
-
- /** Performs a comparison between two IP addresses, indicating if they are identical.
- *
- * \param[in] IP1 First IP address
- * \param[in] IP2 Second IP address
- *
- * \return True if the addresses match, \c false otherwise
- */
- #define IP_COMPARE(IP1, IP2) (memcmp(IP1, IP2, sizeof(IP_Address_t)) == 0)
-
- /* Type Defines: */
- /** Type define of an IP packet header. */
- typedef struct
- {
- unsigned HeaderLength : 4; /**< Total length of the packet header, in 4-byte blocks */
- unsigned Version : 4; /**< IP protocol version */
- uint8_t TypeOfService; /**< Special service type identifier, indicating delay/throughput/reliability levels */
- uint16_t TotalLength; /**< Total length of the IP packet, in bytes */
-
- uint16_t Identification; /**< Identification value for identifying fragmented packets */
- unsigned FragmentOffset : 13; /**< Offset of this IP fragment */
- unsigned Flags : 3; /**< Fragment flags, to indicate if a packet is fragmented */
-
- uint8_t TTL; /**< Maximum allowable number of hops to reach the packet destination */
- uint8_t Protocol; /**< Encapsulated protocol type */
- uint16_t HeaderChecksum; /**< Ethernet checksum of the IP header */
-
- IP_Address_t SourceAddress; /**< Source protocol IP address of the packet */
- IP_Address_t DestinationAddress; /**< Destination protocol IP address of the packet */
- } IP_Header_t;
-
- /* Function Prototypes: */
- int16_t IP_ProcessIPPacket(void* InDataStart,
- void* OutDataStart);
-
-#endif
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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.
-*/
-
-/* Protocol decoders for Ethernet, TCP, IP, ICMP and ARP. Each of these routines
- accepts a header to the appropriate protocol and prints out pertinent information
- on the packet through the serial port.
-
- To disable printing of a specific protocol, define the token NO_DECODE_{Protocol}
- in the project makefile, and pass it to the compiler using the -D switch.
-*/
-
-/** \file
- *
- * Protocol decoding routines, for the plain-text decoding of Ethernet frames for debugging purposes.
- * Enabled protocol decoders will print incoming Ethernet frame contents through the USART in a human
- * readable format.
- *
- * Note that the USART is a slow transmission medium, and will slow down packet processing considerably.
- * Packet decoding routines can be disabled by defining NO_DECODE_{Protocol Name} in the project makefile
- * and passing it to the compiler via the -D switch.
- */
-
-#include "ProtocolDecoders.h"
-
-/** Decodes an Ethernet frame header and prints its contents to through the USART in a human readable format.
- *
- * \param[in] InDataStart Pointer to the start of an Ethernet frame header
- */
-void DecodeEthernetFrameHeader(void* InDataStart)
-{
- #if !defined(NO_DECODE_ETHERNET)
- Ethernet_Frame_Header_t* FrameHeader = (Ethernet_Frame_Header_t*)InDataStart;
-
- printf_P(PSTR("\r\n"));
-
- printf_P(PSTR(" ETHERNET\r\n"));
-
- if (!(MAC_COMPARE(&FrameHeader->Destination, &ServerMACAddress)) &&
- !(MAC_COMPARE(&FrameHeader->Destination, &BroadcastMACAddress)))
- {
- printf_P(PSTR(" + NOT ADDRESSED TO DEVICE\r\n"));
- return;
- }
-
- printf_P(PSTR(" + MAC Source : %02X:%02X:%02X:%02X:%02X:%02X\r\n"), FrameHeader->Source.Octets[0],
- FrameHeader->Source.Octets[1],
- FrameHeader->Source.Octets[2],
- FrameHeader->Source.Octets[3],
- FrameHeader->Source.Octets[4],
- FrameHeader->Source.Octets[5]);
-
- printf_P(PSTR(" + MAC Dest: %02X:%02X:%02X:%02X:%02X:%02X\r\n"), FrameHeader->Destination.Octets[0],
- FrameHeader->Destination.Octets[1],
- FrameHeader->Destination.Octets[2],
- FrameHeader->Destination.Octets[3],
- FrameHeader->Destination.Octets[4],
- FrameHeader->Destination.Octets[5]);
-
- printf_P(PSTR(" + Protocol: 0x%04x\r\n"), SwapEndian_16(FrameHeader->EtherType));
- #endif
-}
-
-/** Decodes an ARP header and prints its contents to through the USART in a human readable format.
- *
- * \param[in] InDataStart Pointer to the start of an ARP packet header
- */
-void DecodeARPHeader(void* InDataStart)
-{
- #if !defined(NO_DECODE_ARP)
- ARP_Header_t* ARPHeader = (ARP_Header_t*)InDataStart;
-
- printf_P(PSTR(" \\\r\n ARP\r\n"));
-
- if (!(IP_COMPARE(&ARPHeader->TPA, &ServerIPAddress)) &&
- !(MAC_COMPARE(&ARPHeader->THA, &ServerMACAddress)))
- {
- printf_P(PSTR(" + NOT ADDRESSED TO DEVICE\r\n"));
- return;
- }
-
- printf_P(PSTR(" + Protocol: %x\r\n"), SwapEndian_16(ARPHeader->ProtocolType));
- printf_P(PSTR(" + Operation: %u\r\n"), SwapEndian_16(ARPHeader->Operation));
-
- if (SwapEndian_16(ARPHeader->ProtocolType) == ETHERTYPE_IPV4)
- {
- printf_P(PSTR(" + SHA MAC: %02X:%02X:%02X:%02X:%02X:%02X\r\n"), ARPHeader->SHA.Octets[0],
- ARPHeader->SHA.Octets[1],
- ARPHeader->SHA.Octets[2],
- ARPHeader->SHA.Octets[3],
- ARPHeader->SHA.Octets[4],
- ARPHeader->SHA.Octets[5]);
-
- printf_P(PSTR(" + SPA IP: %u.%u.%u.%u\r\n"), ARPHeader->SPA.Octets[0],
- ARPHeader->SPA.Octets[1],
- ARPHeader->SPA.Octets[2],
- ARPHeader->SPA.Octets[3]);
-
- printf_P(PSTR(" + THA MAC: %02X:%02X:%02X:%02X:%02X:%02X\r\n"), ARPHeader->THA.Octets[0],
- ARPHeader->THA.Octets[1],
- ARPHeader->THA.Octets[2],
- ARPHeader->THA.Octets[3],
- ARPHeader->THA.Octets[4],
- ARPHeader->THA.Octets[5]);
-
- printf_P(PSTR(" + TPA IP: %u.%u.%u.%u\r\n"), ARPHeader->TPA.Octets[0],
- ARPHeader->TPA.Octets[1],
- ARPHeader->TPA.Octets[2],
- ARPHeader->TPA.Octets[3]);
- }
- #endif
-}
-
-/** Decodes an IP header and prints its contents to through the USART in a human readable format.
- *
- * \param[in] InDataStart Pointer to the start of an IP packet header
- */
-void DecodeIPHeader(void* InDataStart)
-{
- #if !defined(NO_DECODE_IP)
- IP_Header_t* IPHeader = (IP_Header_t*)InDataStart;
-
- uint16_t HeaderLengthBytes = (IPHeader->HeaderLength * sizeof(uint32_t));
-
- printf_P(PSTR(" \\\r\n IP\r\n"));
-
- if (!(IP_COMPARE(&IPHeader->DestinationAddress, &ServerIPAddress)))
- {
- printf_P(PSTR(" + NOT ADDRESSED TO DEVICE\r\n"));
- return;
- }
-
- printf_P(PSTR(" + Header Length: %u Bytes\r\n"), HeaderLengthBytes);
- printf_P(PSTR(" + Packet Version: %u\r\n"), IPHeader->Version);
- printf_P(PSTR(" + Total Length: %u\r\n"), SwapEndian_16(IPHeader->TotalLength));
-
- printf_P(PSTR(" + Protocol: %u\r\n"), IPHeader->Protocol);
- printf_P(PSTR(" + TTL: %u\r\n"), IPHeader->TTL);
-
- printf_P(PSTR(" + IP Src: %u.%u.%u.%u\r\n"), IPHeader->SourceAddress.Octets[0],
- IPHeader->SourceAddress.Octets[1],
- IPHeader->SourceAddress.Octets[2],
- IPHeader->SourceAddress.Octets[3]);
-
- printf_P(PSTR(" + IP Dst: %u.%u.%u.%u\r\n"), IPHeader->DestinationAddress.Octets[0],
- IPHeader->DestinationAddress.Octets[1],
- IPHeader->DestinationAddress.Octets[2],
- IPHeader->DestinationAddress.Octets[3]);
- #endif
-}
-
-/** Decodes an ICMP header and prints its contents to through the USART in a human readable format.
- *
- * \param[in] InDataStart Pointer to the start of an ICMP packet header
- */
-void DecodeICMPHeader(void* InDataStart)
-{
- #if !defined(NO_DECODE_ICMP)
- ICMP_Header_t* ICMPHeader = (ICMP_Header_t*)InDataStart;
-
- printf_P(PSTR(" \\\r\n ICMP\r\n"));
-
- printf_P(PSTR(" + Type: %u\r\n"), ICMPHeader->Type);
- printf_P(PSTR(" + Code: %u\r\n"), ICMPHeader->Code);
- #endif
-}
-
-/** Decodes a TCP header and prints its contents to through the USART in a human readable format.
- *
- * \param[in] InDataStart Pointer to the start of a TCP packet header
- */
-void DecodeTCPHeader(void* InDataStart)
-{
- #if !defined(NO_DECODE_TCP)
- TCP_Header_t* TCPHeader = (TCP_Header_t*)InDataStart;
-
- uint16_t HeaderLengthBytes = (TCPHeader->DataOffset * sizeof(uint32_t));
-
- printf_P(PSTR(" \\\r\n TCP\r\n"));
-
- printf_P(PSTR(" + Header Length: %u Bytes\r\n"), HeaderLengthBytes);
-
- printf_P(PSTR(" + Source Port: %u\r\n"), SwapEndian_16(TCPHeader->SourcePort));
- printf_P(PSTR(" + Destination Port: %u\r\n"), SwapEndian_16(TCPHeader->DestinationPort));
-
- printf_P(PSTR(" + Sequence Number: %lu\r\n"), SwapEndian_32(TCPHeader->SequenceNumber));
- printf_P(PSTR(" + Acknowledgment Number: %lu\r\n"), SwapEndian_32(TCPHeader->AcknowledgmentNumber));
-
- printf_P(PSTR(" + Flags: 0x%02X\r\n"), TCPHeader->Flags);
-
- if (TCP_GetPortState(TCPHeader->DestinationPort) == TCP_Port_Closed)
- printf_P(PSTR(" + NOT LISTENING ON DESTINATION PORT\r\n"));
- #endif
-}
-
-/** Decodes an UDP header and prints its contents to through the USART in a human readable format.
- *
- * \param[in] InDataStart Pointer to the start of a UDP packet header
- */
-void DecodeUDPHeader(void* InDataStart)
-{
- #if !defined(NO_DECODE_UDP)
- UDP_Header_t* UDPHeader = (UDP_Header_t*)InDataStart;
-
- printf_P(PSTR(" \\\r\n UDP\r\n"));
-
- printf_P(PSTR(" + Source Port: %u\r\n"), SwapEndian_16(UDPHeader->SourcePort));
- printf_P(PSTR(" + Destination Port: %u\r\n"), SwapEndian_16(UDPHeader->DestinationPort));
-
- printf_P(PSTR(" + Data Length: %d\r\n"), SwapEndian_16(UDPHeader->Length));
- #endif
-}
-
-/** Decodes an DHCP header and prints its contents to through the USART in a human readable format.
- *
- * \param[in] InDataStart Pointer to the start of a DHCP packet header
- */
-void DecodeDHCPHeader(void* InDataStart)
-{
- #if !defined(NO_DECODE_DHCP)
- uint8_t* DHCPOptions = ((uint8_t*)InDataStart + sizeof(DHCP_Header_t));
-
- printf_P(PSTR(" \\\r\n DHCP\r\n"));
-
- while (DHCPOptions[0] != DHCP_OPTION_END)
- {
- if (DHCPOptions[0] == DHCP_OPTION_MESSAGETYPE)
- {
- switch (DHCPOptions[2])
- {
- case DHCP_MESSAGETYPE_DISCOVER:
- printf_P(PSTR(" + DISCOVER\r\n"));
- break;
- case DHCP_MESSAGETYPE_REQUEST:
- printf_P(PSTR(" + REQUEST\r\n"));
- break;
- case DHCP_MESSAGETYPE_RELEASE:
- printf_P(PSTR(" + RELEASE\r\n"));
- break;
- case DHCP_MESSAGETYPE_DECLINE:
- printf_P(PSTR(" + DECLINE\r\n"));
- break;
- }
- }
-
- DHCPOptions += ((DHCPOptions[0] == DHCP_OPTION_PAD) ? 1 : (DHCPOptions[1] + 2));
- }
- #endif
-}
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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 ProtocolDecoders.c.
- */
-
-#ifndef _PROTOCOL_DECODERS_H_
-#define _PROTOCOL_DECODERS_H_
-
- /* Includes: */
- #include <avr/io.h>
- #include <avr/pgmspace.h>
- #include <stdio.h>
-
- #include <LUFA/Drivers/Peripheral/Serial.h>
-
- #include "EthernetProtocols.h"
- #include "Ethernet.h"
- #include "Config/AppConfig.h"
-
- /* Function Prototypes: */
- void DecodeEthernetFrameHeader(void* InDataStart);
- void DecodeARPHeader(void* InDataStart);
- void DecodeIPHeader(void* InDataStart);
- void DecodeICMPHeader(void* InDataStart);
- void DecodeTCPHeader(void* InDataStart);
- void DecodeUDPHeader(void* InDataStart);
- void DecodeDHCPHeader(void* InDataStart);
-
-#endif
-
#include <stdbool.h>
#include "../RNDISEthernet.h"
- #include "Ethernet.h"
/* External Variables: */
extern uint8_t RNDISMessageBuffer[];
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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
- *
- * Transmission Control Protocol (TCP) packet handling routines. This protocol handles the reliable in-order transmission
- * and reception of packets to and from devices on a network, to "ports" on the device. It is used in situations where data
- * delivery must be reliable and correct, e.g. HTTP, TELNET and most other non-streaming protocols.
- */
-
-#define INCLUDE_FROM_TCP_C
-#include "TCP.h"
-
-/** Port state table array. This contains the current status of TCP ports in the device. To save on space, only open ports are
- * stored - closed ports may be overwritten at any time, and the system will assume any ports not present in the array are closed. This
- * allows for MAX_OPEN_TCP_PORTS to be less than the number of ports used by the application if desired.
- */
-TCP_PortState_t PortStateTable[MAX_OPEN_TCP_PORTS];
-
-/** Connection state table array. This contains the current status of TCP connections in the device. To save on space, only active
- * (non-closed) connections are stored - closed connections may be overwritten at any time, and the system will assume any connections
- * not present in the array are closed.
- */
-TCP_ConnectionState_t ConnectionStateTable[MAX_TCP_CONNECTIONS];
-
-
-/** Task to handle the calling of each registered application's callback function, to process and generate TCP packets at the application
- * level. If an application produces a response, this task constructs the appropriate Ethernet frame and places it into the Ethernet OUT
- * buffer for later transmission.
- */
-void TCP_Task(void)
-{
- /* Run each application in sequence, to process incoming and generate outgoing packets */
- for (uint8_t CSTableEntry = 0; CSTableEntry < MAX_TCP_CONNECTIONS; CSTableEntry++)
- {
- /* Find the corresponding port entry in the port table */
- for (uint8_t PTableEntry = 0; PTableEntry < MAX_OPEN_TCP_PORTS; PTableEntry++)
- {
- /* Run the application handler for the port */
- if ((PortStateTable[PTableEntry].Port == ConnectionStateTable[CSTableEntry].Port) &&
- (PortStateTable[PTableEntry].State == TCP_Port_Open))
- {
- PortStateTable[PTableEntry].ApplicationHandler(&ConnectionStateTable[CSTableEntry],
- &ConnectionStateTable[CSTableEntry].Info.Buffer);
- }
- }
- }
-
- /* Bail out early if there is already a frame waiting to be sent in the Ethernet OUT buffer */
- if (FrameOUT.FrameLength)
- return;
-
- /* Send response packets from each application as the TCP packet buffers are filled by the applications */
- for (uint8_t CSTableEntry = 0; CSTableEntry < MAX_TCP_CONNECTIONS; CSTableEntry++)
- {
- /* For each completely received packet, pass it along to the listening application */
- if ((ConnectionStateTable[CSTableEntry].Info.Buffer.Direction == TCP_PACKETDIR_OUT) &&
- (ConnectionStateTable[CSTableEntry].Info.Buffer.Ready))
- {
- Ethernet_Frame_Header_t* FrameOUTHeader = (Ethernet_Frame_Header_t*)&FrameOUT.FrameData;
- IP_Header_t* IPHeaderOUT = (IP_Header_t*)&FrameOUT.FrameData[sizeof(Ethernet_Frame_Header_t)];
- TCP_Header_t* TCPHeaderOUT = (TCP_Header_t*)&FrameOUT.FrameData[sizeof(Ethernet_Frame_Header_t) +
- sizeof(IP_Header_t)];
- void* TCPDataOUT = &FrameOUT.FrameData[sizeof(Ethernet_Frame_Header_t) +
- sizeof(IP_Header_t) +
- sizeof(TCP_Header_t)];
-
- uint16_t PacketSize = ConnectionStateTable[CSTableEntry].Info.Buffer.Length;
-
- /* Fill out the TCP data */
- TCPHeaderOUT->SourcePort = ConnectionStateTable[CSTableEntry].Port;
- TCPHeaderOUT->DestinationPort = ConnectionStateTable[CSTableEntry].RemotePort;
- TCPHeaderOUT->SequenceNumber = SwapEndian_32(ConnectionStateTable[CSTableEntry].Info.SequenceNumberOut);
- TCPHeaderOUT->AcknowledgmentNumber = SwapEndian_32(ConnectionStateTable[CSTableEntry].Info.SequenceNumberIn);
- TCPHeaderOUT->DataOffset = (sizeof(TCP_Header_t) / sizeof(uint32_t));
- TCPHeaderOUT->WindowSize = SwapEndian_16(TCP_WINDOW_SIZE);
-
- TCPHeaderOUT->Flags = TCP_FLAG_ACK;
- TCPHeaderOUT->UrgentPointer = 0;
- TCPHeaderOUT->Checksum = 0;
- TCPHeaderOUT->Reserved = 0;
-
- memcpy(TCPDataOUT, ConnectionStateTable[CSTableEntry].Info.Buffer.Data, PacketSize);
-
- ConnectionStateTable[CSTableEntry].Info.SequenceNumberOut += PacketSize;
-
- TCPHeaderOUT->Checksum = TCP_Checksum16(TCPHeaderOUT, &ServerIPAddress,
- &ConnectionStateTable[CSTableEntry].RemoteAddress,
- (sizeof(TCP_Header_t) + PacketSize));
-
- PacketSize += sizeof(TCP_Header_t);
-
- /* Fill out the response IP header */
- IPHeaderOUT->TotalLength = SwapEndian_16(sizeof(IP_Header_t) + PacketSize);
- IPHeaderOUT->TypeOfService = 0;
- IPHeaderOUT->HeaderLength = (sizeof(IP_Header_t) / sizeof(uint32_t));
- IPHeaderOUT->Version = 4;
- IPHeaderOUT->Flags = 0;
- IPHeaderOUT->FragmentOffset = 0;
- IPHeaderOUT->Identification = 0;
- IPHeaderOUT->HeaderChecksum = 0;
- IPHeaderOUT->Protocol = PROTOCOL_TCP;
- IPHeaderOUT->TTL = DEFAULT_TTL;
- IPHeaderOUT->SourceAddress = ServerIPAddress;
- IPHeaderOUT->DestinationAddress = ConnectionStateTable[CSTableEntry].RemoteAddress;
-
- IPHeaderOUT->HeaderChecksum = Ethernet_Checksum16(IPHeaderOUT, sizeof(IP_Header_t));
-
- PacketSize += sizeof(IP_Header_t);
-
- /* Fill out the response Ethernet frame header */
- FrameOUTHeader->Source = ServerMACAddress;
- FrameOUTHeader->Destination = (MAC_Address_t){{0x02, 0x00, 0x02, 0x00, 0x02, 0x00}};
- FrameOUTHeader->EtherType = SwapEndian_16(ETHERTYPE_IPV4);
-
- PacketSize += sizeof(Ethernet_Frame_Header_t);
-
- /* Set the response length in the buffer and indicate that a response is ready to be sent */
- FrameOUT.FrameLength = PacketSize;
-
- ConnectionStateTable[CSTableEntry].Info.Buffer.Ready = false;
-
- break;
- }
- }
-}
-
-/** Initializes the TCP protocol handler, clearing the port and connection state tables. This must be called before TCP packets are
- * processed.
- */
-void TCP_Init(void)
-{
- /* Initialize the port state table with all CLOSED entries */
- for (uint8_t PTableEntry = 0; PTableEntry < MAX_OPEN_TCP_PORTS; PTableEntry++)
- PortStateTable[PTableEntry].State = TCP_Port_Closed;
-
- /* Initialize the connection table with all CLOSED entries */
- for (uint8_t CSTableEntry = 0; CSTableEntry < MAX_TCP_CONNECTIONS; CSTableEntry++)
- ConnectionStateTable[CSTableEntry].State = TCP_Connection_Closed;
-}
-
-/** Sets the state and callback handler of the given port, specified in big endian to the given state.
- *
- * \param[in] Port Port whose state and callback function to set, specified in big endian
- * \param[in] State New state of the port, a value from the \ref TCP_PortStates_t enum
- * \param[in] Handler Application callback handler for the port
- *
- * \return Boolean \c true if the port state was set, \c false otherwise (no more space in the port state table)
- */
-bool TCP_SetPortState(const uint16_t Port,
- const uint8_t State,
- void (*Handler)(TCP_ConnectionState_t*, TCP_ConnectionBuffer_t*))
-{
- /* Note, Port number should be specified in BIG endian to simplify network code */
-
- /* Check to see if the port entry is already in the port state table */
- for (uint8_t PTableEntry = 0; PTableEntry < MAX_OPEN_TCP_PORTS; PTableEntry++)
- {
- /* Find existing entry for the port in the table, update it if found */
- if (PortStateTable[PTableEntry].Port == Port)
- {
- PortStateTable[PTableEntry].State = State;
- PortStateTable[PTableEntry].ApplicationHandler = Handler;
- return true;
- }
- }
-
- /* Check if trying to open the port -- if so we need to find an unused (closed) entry and replace it */
- if (State == TCP_Port_Open)
- {
- for (uint8_t PTableEntry = 0; PTableEntry < MAX_OPEN_TCP_PORTS; PTableEntry++)
- {
- /* Find a closed port entry in the table, change it to the given port and state */
- if (PortStateTable[PTableEntry].State == TCP_Port_Closed)
- {
- PortStateTable[PTableEntry].Port = Port;
- PortStateTable[PTableEntry].State = State;
- PortStateTable[PTableEntry].ApplicationHandler = Handler;
- return true;
- }
- }
-
- /* Port not in table and no room to add it, return failure */
- return false;
- }
- else
- {
- /* Port not in table but trying to close it, so operation successful */
- return true;
- }
-}
-
-/** Retrieves the current state of a given TCP port, specified in big endian.
- *
- * \param[in] Port TCP port whose state is to be retrieved, given in big-endian
- *
- * \return A value from the \ref TCP_PortStates_t enum
- */
-uint8_t TCP_GetPortState(const uint16_t Port)
-{
- /* Note, Port number should be specified in BIG endian to simplify network code */
-
- for (uint8_t PTableEntry = 0; PTableEntry < MAX_OPEN_TCP_PORTS; PTableEntry++)
- {
- /* Find existing entry for the port in the table, return the port status if found */
- if (PortStateTable[PTableEntry].Port == Port)
- return PortStateTable[PTableEntry].State;
- }
-
- /* Port not in table, assume closed */
- return TCP_Port_Closed;
-}
-
-/** Sets the connection state of the given port, remote address and remote port to the given TCP connection state. If the
- * connection exists in the connection state table it is updated, otherwise it is created if possible.
- *
- * \param[in] Port TCP port of the connection on the device, specified in big endian
- * \param[in] RemoteAddress Remote protocol IP address of the connected device
- * \param[in] RemotePort TCP port of the remote device in the connection, specified in big endian
- * \param[in] State TCP connection state, a value from the \ref TCP_ConnectionStates_t enum
- *
- * \return Boolean \c true if the connection was updated or created, \c false otherwise (no more space in the connection state table)
- */
-bool TCP_SetConnectionState(const uint16_t Port,
- const IP_Address_t* RemoteAddress,
- const uint16_t RemotePort,
- const uint8_t State)
-{
- /* Note, Port number should be specified in BIG endian to simplify network code */
-
- for (uint8_t CSTableEntry = 0; CSTableEntry < MAX_TCP_CONNECTIONS; CSTableEntry++)
- {
- /* Find port entry in the table */
- if ((ConnectionStateTable[CSTableEntry].Port == Port) &&
- IP_COMPARE(&ConnectionStateTable[CSTableEntry].RemoteAddress, RemoteAddress) &&
- ConnectionStateTable[CSTableEntry].RemotePort == RemotePort)
- {
- ConnectionStateTable[CSTableEntry].State = State;
- return true;
- }
- }
-
- for (uint8_t CSTableEntry = 0; CSTableEntry < MAX_TCP_CONNECTIONS; CSTableEntry++)
- {
- /* Find empty entry in the table */
- if (ConnectionStateTable[CSTableEntry].State == TCP_Connection_Closed)
- {
- ConnectionStateTable[CSTableEntry].Port = Port;
- ConnectionStateTable[CSTableEntry].RemoteAddress = *RemoteAddress;
- ConnectionStateTable[CSTableEntry].RemotePort = RemotePort;
- ConnectionStateTable[CSTableEntry].State = State;
- return true;
- }
- }
-
- return false;
-}
-
-/** Retrieves the current state of a given TCP connection to a host.
- *
- * \param[in] Port TCP port on the device in the connection, specified in big endian
- * \param[in] RemoteAddress Remote protocol IP address of the connected host
- * \param[in] RemotePort Remote TCP port of the connected host, specified in big endian
- *
- * \return A value from the \ref TCP_ConnectionStates_t enum
- */
-uint8_t TCP_GetConnectionState(const uint16_t Port,
- const IP_Address_t* RemoteAddress,
- const uint16_t RemotePort)
-{
- /* Note, Port number should be specified in BIG endian to simplify network code */
-
- for (uint8_t CSTableEntry = 0; CSTableEntry < MAX_TCP_CONNECTIONS; CSTableEntry++)
- {
- /* Find port entry in the table */
- if ((ConnectionStateTable[CSTableEntry].Port == Port) &&
- IP_COMPARE(&ConnectionStateTable[CSTableEntry].RemoteAddress, RemoteAddress) &&
- ConnectionStateTable[CSTableEntry].RemotePort == RemotePort)
-
- {
- return ConnectionStateTable[CSTableEntry].State;
- }
- }
-
- return TCP_Connection_Closed;
-}
-
-/** Retrieves the connection info structure of a given connection to a host.
- *
- * \param[in] Port TCP port on the device in the connection, specified in big endian
- * \param[in] RemoteAddress Remote protocol IP address of the connected host
- * \param[in] RemotePort Remote TCP port of the connected host, specified in big endian
- *
- * \return ConnectionInfo structure of the connection if found, NULL otherwise
- */
-TCP_ConnectionInfo_t* TCP_GetConnectionInfo(const uint16_t Port,
- const IP_Address_t* RemoteAddress,
- const uint16_t RemotePort)
-{
- /* Note, Port number should be specified in BIG endian to simplify network code */
-
- for (uint8_t CSTableEntry = 0; CSTableEntry < MAX_TCP_CONNECTIONS; CSTableEntry++)
- {
- /* Find port entry in the table */
- if ((ConnectionStateTable[CSTableEntry].Port == Port) &&
- IP_COMPARE(&ConnectionStateTable[CSTableEntry].RemoteAddress, RemoteAddress) &&
- ConnectionStateTable[CSTableEntry].RemotePort == RemotePort)
- {
- return &ConnectionStateTable[CSTableEntry].Info;
- }
- }
-
- return NULL;
-}
-
-/** Processes a TCP packet inside an Ethernet frame, and writes the appropriate response
- * to the output Ethernet frame if one is created by a application handler.
- *
- * \param[in] IPHeaderInStart Pointer to the start of the incoming packet's IP header
- * \param[in] TCPHeaderInStart Pointer to the start of the incoming packet's TCP header
- * \param[out] TCPHeaderOutStart Pointer to the start of the outgoing packet's TCP header
- *
- * \return The number of bytes written to the out Ethernet frame if any, NO_RESPONSE if no
- * response was generated, NO_PROCESS if the packet processing was deferred until the
- * next Ethernet packet handler iteration
- */
-int16_t TCP_ProcessTCPPacket(void* IPHeaderInStart,
- void* TCPHeaderInStart,
- void* TCPHeaderOutStart)
-{
- IP_Header_t* IPHeaderIN = (IP_Header_t*)IPHeaderInStart;
- TCP_Header_t* TCPHeaderIN = (TCP_Header_t*)TCPHeaderInStart;
- TCP_Header_t* TCPHeaderOUT = (TCP_Header_t*)TCPHeaderOutStart;
-
- TCP_ConnectionInfo_t* ConnectionInfo;
-
- DecodeTCPHeader(TCPHeaderInStart);
-
- bool PacketResponse = false;
-
- /* Check if the destination port is open and allows incoming connections */
- if (TCP_GetPortState(TCPHeaderIN->DestinationPort) == TCP_Port_Open)
- {
- /* Detect SYN from host to start a connection */
- if (TCPHeaderIN->Flags & TCP_FLAG_SYN)
- TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress, TCPHeaderIN->SourcePort, TCP_Connection_Listen);
-
- /* Detect RST from host to abort existing connection */
- if (TCPHeaderIN->Flags & TCP_FLAG_RST)
- {
- if (TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort, TCP_Connection_Closed))
- {
- TCPHeaderOUT->Flags = (TCP_FLAG_RST | TCP_FLAG_ACK);
- PacketResponse = true;
- }
- }
- else
- {
- /* Process the incoming TCP packet based on the current connection state for the sender and port */
- switch (TCP_GetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress, TCPHeaderIN->SourcePort))
- {
- case TCP_Connection_Listen:
- if (TCPHeaderIN->Flags == TCP_FLAG_SYN)
- {
- /* SYN connection starts a connection with a peer */
- if (TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort, TCP_Connection_SYNReceived))
- {
- TCPHeaderOUT->Flags = (TCP_FLAG_SYN | TCP_FLAG_ACK);
-
- ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress, TCPHeaderIN->SourcePort);
-
- ConnectionInfo->SequenceNumberIn = (SwapEndian_32(TCPHeaderIN->SequenceNumber) + 1);
- ConnectionInfo->SequenceNumberOut = 0;
- ConnectionInfo->Buffer.InUse = false;
- }
- else
- {
- TCPHeaderOUT->Flags = TCP_FLAG_RST;
- }
-
- PacketResponse = true;
- }
-
- break;
- case TCP_Connection_SYNReceived:
- if (TCPHeaderIN->Flags == TCP_FLAG_ACK)
- {
- /* ACK during the connection process completes the connection to a peer */
-
- TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort, TCP_Connection_Established);
-
- ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort);
-
- ConnectionInfo->SequenceNumberOut++;
- }
-
- break;
- case TCP_Connection_Established:
- if (TCPHeaderIN->Flags == (TCP_FLAG_FIN | TCP_FLAG_ACK))
- {
- /* FIN ACK when connected to a peer starts the finalization process */
-
- TCPHeaderOUT->Flags = (TCP_FLAG_FIN | TCP_FLAG_ACK);
- PacketResponse = true;
-
- TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort, TCP_Connection_CloseWait);
-
- ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort);
-
- ConnectionInfo->SequenceNumberIn++;
- ConnectionInfo->SequenceNumberOut++;
- }
- else if ((TCPHeaderIN->Flags == TCP_FLAG_ACK) || (TCPHeaderIN->Flags == (TCP_FLAG_ACK | TCP_FLAG_PSH)))
- {
- ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort);
-
- /* Check if the buffer is currently in use either by a buffered data to send, or receive */
- if ((ConnectionInfo->Buffer.InUse == false) && (ConnectionInfo->Buffer.Ready == false))
- {
- ConnectionInfo->Buffer.Direction = TCP_PACKETDIR_IN;
- ConnectionInfo->Buffer.InUse = true;
- ConnectionInfo->Buffer.Length = 0;
- }
-
- /* Check if the buffer has been claimed by us to read in data from the peer */
- if ((ConnectionInfo->Buffer.Direction == TCP_PACKETDIR_IN) &&
- (ConnectionInfo->Buffer.Length != TCP_WINDOW_SIZE))
- {
- uint16_t IPOffset = (IPHeaderIN->HeaderLength * sizeof(uint32_t));
- uint16_t TCPOffset = (TCPHeaderIN->DataOffset * sizeof(uint32_t));
- uint16_t DataLength = (SwapEndian_16(IPHeaderIN->TotalLength) - IPOffset - TCPOffset);
-
- /* Copy the packet data into the buffer */
- memcpy(&ConnectionInfo->Buffer.Data[ConnectionInfo->Buffer.Length],
- &((uint8_t*)TCPHeaderInStart)[TCPOffset],
- DataLength);
-
- ConnectionInfo->SequenceNumberIn += DataLength;
- ConnectionInfo->Buffer.Length += DataLength;
-
- /* Check if the buffer is full or if the PSH flag is set, if so indicate buffer ready */
- if ((!(TCP_WINDOW_SIZE - ConnectionInfo->Buffer.Length)) || (TCPHeaderIN->Flags & TCP_FLAG_PSH))
- {
- ConnectionInfo->Buffer.InUse = false;
- ConnectionInfo->Buffer.Ready = true;
-
- TCPHeaderOUT->Flags = TCP_FLAG_ACK;
- PacketResponse = true;
- }
- }
- else
- {
- /* Buffer is currently in use by the application, defer processing of the incoming packet */
- return NO_PROCESS;
- }
- }
-
- break;
- case TCP_Connection_Closing:
- ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort);
-
- TCPHeaderOUT->Flags = (TCP_FLAG_ACK | TCP_FLAG_FIN);
- PacketResponse = true;
-
- ConnectionInfo->Buffer.InUse = false;
-
- TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort, TCP_Connection_FINWait1);
-
- break;
- case TCP_Connection_FINWait1:
- if (TCPHeaderIN->Flags == (TCP_FLAG_FIN | TCP_FLAG_ACK))
- {
- ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort);
-
- TCPHeaderOUT->Flags = TCP_FLAG_ACK;
- PacketResponse = true;
-
- ConnectionInfo->SequenceNumberIn++;
- ConnectionInfo->SequenceNumberOut++;
-
- TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort, TCP_Connection_Closed);
- }
- else if (TCPHeaderIN->Flags == TCP_FLAG_ACK)
- {
- TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort, TCP_Connection_FINWait2);
- }
-
- break;
- case TCP_Connection_FINWait2:
- if (TCPHeaderIN->Flags == (TCP_FLAG_FIN | TCP_FLAG_ACK))
- {
- ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort);
-
- TCPHeaderOUT->Flags = TCP_FLAG_ACK;
- PacketResponse = true;
-
- ConnectionInfo->SequenceNumberIn++;
- ConnectionInfo->SequenceNumberOut++;
-
- TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort, TCP_Connection_Closed);
- }
-
- break;
- case TCP_Connection_CloseWait:
- if (TCPHeaderIN->Flags == TCP_FLAG_ACK)
- {
- TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort, TCP_Connection_Closed);
- }
-
- break;
- }
- }
- }
- else
- {
- /* Port is not open, indicate via a RST/ACK response to the sender */
- TCPHeaderOUT->Flags = (TCP_FLAG_RST | TCP_FLAG_ACK);
- PacketResponse = true;
- }
-
- /* Check if we need to respond to the sent packet */
- if (PacketResponse)
- {
- ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
- TCPHeaderIN->SourcePort);
-
- TCPHeaderOUT->SourcePort = TCPHeaderIN->DestinationPort;
- TCPHeaderOUT->DestinationPort = TCPHeaderIN->SourcePort;
- TCPHeaderOUT->SequenceNumber = SwapEndian_32(ConnectionInfo->SequenceNumberOut);
- TCPHeaderOUT->AcknowledgmentNumber = SwapEndian_32(ConnectionInfo->SequenceNumberIn);
- TCPHeaderOUT->DataOffset = (sizeof(TCP_Header_t) / sizeof(uint32_t));
-
- if (!(ConnectionInfo->Buffer.InUse))
- TCPHeaderOUT->WindowSize = SwapEndian_16(TCP_WINDOW_SIZE);
- else
- TCPHeaderOUT->WindowSize = SwapEndian_16(TCP_WINDOW_SIZE - ConnectionInfo->Buffer.Length);
-
- TCPHeaderOUT->UrgentPointer = 0;
- TCPHeaderOUT->Checksum = 0;
- TCPHeaderOUT->Reserved = 0;
-
- TCPHeaderOUT->Checksum = TCP_Checksum16(TCPHeaderOUT, &IPHeaderIN->DestinationAddress,
- &IPHeaderIN->SourceAddress, sizeof(TCP_Header_t));
-
- return sizeof(TCP_Header_t);
- }
-
- return NO_RESPONSE;
-}
-
-/** Calculates the appropriate TCP checksum, consisting of the addition of the one's compliment of each word,
- * complimented.
- *
- * \param[in] TCPHeaderOutStart Pointer to the start of the packet's outgoing TCP header
- * \param[in] SourceAddress Source protocol IP address of the outgoing IP header
- * \param[in] DestinationAddress Destination protocol IP address of the outgoing IP header
- * \param[in] TCPOutSize Size in bytes of the TCP data header and payload
- *
- * \return A 16-bit TCP checksum value
- */
-static uint16_t TCP_Checksum16(void* TCPHeaderOutStart,
- const IP_Address_t* SourceAddress,
- const IP_Address_t* DestinationAddress,
- uint16_t TCPOutSize)
-{
- uint32_t Checksum = 0;
-
- /* TCP/IP checksums are the addition of the one's compliment of each word including the IP pseudo-header,
- complimented */
-
- Checksum += ((uint16_t*)SourceAddress)[0];
- Checksum += ((uint16_t*)SourceAddress)[1];
- Checksum += ((uint16_t*)DestinationAddress)[0];
- Checksum += ((uint16_t*)DestinationAddress)[1];
- Checksum += SwapEndian_16(PROTOCOL_TCP);
- Checksum += SwapEndian_16(TCPOutSize);
-
- for (uint16_t CurrWord = 0; CurrWord < (TCPOutSize >> 1); CurrWord++)
- Checksum += ((uint16_t*)TCPHeaderOutStart)[CurrWord];
-
- if (TCPOutSize & 0x01)
- Checksum += (((uint16_t*)TCPHeaderOutStart)[TCPOutSize >> 1] & 0x00FF);
-
- while (Checksum & 0xFFFF0000)
- Checksum = ((Checksum & 0xFFFF) + (Checksum >> 16));
-
- return ~Checksum;
-}
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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 TCP.c.
- */
-
-#ifndef _TCP_H_
-#define _TCP_H_
-
- /* Includes: */
- #include <avr/io.h>
- #include <stdbool.h>
-
- #include "EthernetProtocols.h"
- #include "Ethernet.h"
- #include "ProtocolDecoders.h"
-
- /* Macros: */
- /** Maximum number of TCP ports which can be open at the one time. */
- #define MAX_OPEN_TCP_PORTS 1
-
- /** Maximum number of TCP connections which can be sustained at the one time. */
- #define MAX_TCP_CONNECTIONS 3
-
- /** TCP window size, giving the maximum number of bytes which can be buffered at the one time. */
- #define TCP_WINDOW_SIZE 512
-
- /** Port number for HTTP transmissions. */
- #define TCP_PORT_HTTP SwapEndian_16(80)
-
- /** Data direction indicator for a TCP application buffer, indicating data from host-to-device. */
- #define TCP_PACKETDIR_IN false
-
- /** Data direction indicator for a TCP application buffer, indicating data from device-to-host. */
- #define TCP_PACKETDIR_OUT true
-
- /** Congestion Window Reduced TCP flag mask. */
- #define TCP_FLAG_CWR (1 << 7)
-
- /** Explicit Congestion Notification TCP flag mask. */
- #define TCP_FLAG_ECE (1 << 6)
-
- /** Urgent TCP flag mask. */
- #define TCP_FLAG_URG (1 << 5)
-
- /** Data Acknowledge TCP flag mask. */
- #define TCP_FLAG_ACK (1 << 4)
-
- /** Data Push TCP flag mask. */
- #define TCP_FLAG_PSH (1 << 3)
-
- /** Reset TCP flag mask. */
- #define TCP_FLAG_RST (1 << 2)
-
- /** Synchronize TCP flag mask. */
- #define TCP_FLAG_SYN (1 << 1)
-
- /** Connection Finalize TCP flag mask. */
- #define TCP_FLAG_FIN (1 << 0)
-
- /** Application macro: Determines if the given application buffer contains a packet received from the host
- *
- * \param[in] Buffer Application buffer to check
- *
- * \return Boolean \c true if the buffer contains a packet from the host, \c false otherwise
- */
- #define TCP_APP_HAS_RECEIVED_PACKET(Buffer) (Buffer->Ready && (Buffer->Direction == TCP_PACKETDIR_IN))
-
- /** Application macro: Indicates if the application buffer is currently locked by the application for device-to-host transfers.
- *
- * \param[in] Buffer Application buffer to check
- *
- * \return Boolean \c true if the buffer has been captured by the application for device-to-host transmissions, \c false otherwise
- */
- #define TCP_APP_HAVE_CAPTURED_BUFFER(Buffer) (!(Buffer->Ready) && Buffer->InUse && \
- (Buffer->Direction == TCP_PACKETDIR_OUT))
-
- /** Application macro: Indicates if the application can lock the buffer for multiple continued device-to-host transmissions.
- *
- * \param[in] Buffer Application buffer to check
- *
- * \return Boolean \c true if the buffer may be captured by the application for device-to-host transmissions, \c false otherwise
- */
- #define TCP_APP_CAN_CAPTURE_BUFFER(Buffer) Buffer->InUse
-
- /** Application macro: Captures the application buffer, locking it for device-to-host transmissions only. This should be
- * performed when the application needs to transmit several packets worth of data in succession with no interruptions from the host.
- *
- * \pre The application must check that the buffer can be locked first using TCP_APP_CAN_CAPTURE_BUFFER().
- *
- * \param[in] Buffer Application buffer to lock
- */
- #define TCP_APP_CAPTURE_BUFFER(Buffer) do { Buffer->Direction = TCP_PACKETDIR_OUT; Buffer->InUse = true; } while (0)
-
- /** Application macro: Releases a captured application buffer, allowing for host-to-device packets to be received.
- *
- * \param[in] Buffer Application buffer to release
- */
- #define TCP_APP_RELEASE_BUFFER(Buffer) do { Buffer->InUse = false; } while (0)
-
- /** Application macro: Sends the contents of the given application buffer to the host.
- *
- * \param[in] Buffer Application buffer to send
- * \param[in] Len Length of data contained in the buffer
- */
- #define TCP_APP_SEND_BUFFER(Buffer, Len) do { Buffer->Direction = TCP_PACKETDIR_OUT; Buffer->Length = Len; Buffer->Ready = true; } while (0)
-
- /** Application macro: Clears the application buffer, ready for a packet to be written to it.
- *
- * \param[in] Buffer Application buffer to clear
- */
- #define TCP_APP_CLEAR_BUFFER(Buffer) do { Buffer->Ready = false; Buffer->Length = 0; } while (0)
-
- /** Application macro: Closes an open connection to a host.
- *
- * \param[in] Connection Open TCP connection to close
- */
- #define TCP_APP_CLOSECONNECTION(Connection) do { Connection->State = TCP_Connection_Closing; } while (0)
-
- /* Enums: */
- /** Enum for possible TCP port states. */
- enum TCP_PortStates_t
- {
- TCP_Port_Closed = 0, /**< TCP port closed, no connections to a host may be made on this port. */
- TCP_Port_Open = 1, /**< TCP port open, connections to a host may be made on this port. */
- };
-
- /** Enum for possible TCP connection states. */
- enum TCP_ConnectionStates_t
- {
- TCP_Connection_Listen = 0, /**< Listening for a connection from a host */
- TCP_Connection_SYNSent = 1, /**< Unused */
- TCP_Connection_SYNReceived = 2, /**< SYN received, waiting for ACK */
- TCP_Connection_Established = 3, /**< Connection established in both directions */
- TCP_Connection_FINWait1 = 4, /**< Closing, waiting for ACK */
- TCP_Connection_FINWait2 = 5, /**< Closing, waiting for FIN ACK */
- TCP_Connection_CloseWait = 6, /**< Closing, waiting for ACK */
- TCP_Connection_Closing = 7, /**< Unused */
- TCP_Connection_LastACK = 8, /**< Unused */
- TCP_Connection_TimeWait = 9, /**< Unused */
- TCP_Connection_Closed = 10, /**< Connection closed in both directions */
- };
-
- /* Type Defines: */
- /** Type define for a TCP connection buffer structure, including size, data and direction. */
- typedef struct
- {
- uint16_t Length; /**< Length of data in the TCP application buffer */
- uint8_t Data[TCP_WINDOW_SIZE]; /**< TCP application data buffer */
- bool Direction; /**< Buffer transmission direction, either TCP_PACKETDIR_IN or TCP_PACKETDIR_OUT */
- bool Ready; /**< If data from host, indicates buffer ready to be read, otherwise indicates
- * buffer ready to be sent to the host
- */
- bool InUse; /**< Indicates if the buffer is locked to to the current direction, and cannot be changed */
- } TCP_ConnectionBuffer_t;
-
- /** Type define for a TCP connection information structure. */
- typedef struct
- {
- uint32_t SequenceNumberIn; /**< Current TCP sequence number for host-to-device */
- uint32_t SequenceNumberOut; /**< Current TCP sequence number for device-to-host */
- TCP_ConnectionBuffer_t Buffer; /**< Connection application data buffer */
- } TCP_ConnectionInfo_t;
-
- /** Type define for a complete TCP connection state. */
- typedef struct
- {
- uint16_t Port; /**< Connection port number on the device */
- uint16_t RemotePort; /**< Connection port number on the host */
- IP_Address_t RemoteAddress; /**< Connection protocol IP address of the host */
- TCP_ConnectionInfo_t Info; /**< Connection information, including application buffer */
- uint8_t State; /**< Current connection state, a value from the \ref TCP_ConnectionStates_t enum */
- } TCP_ConnectionState_t;
-
- /** Type define for a TCP port state. */
- typedef struct
- {
- uint16_t Port; /**< TCP port number on the device */
- uint8_t State; /**< Current port state, a value from the \ref TCP_PortStates_t enum */
- void (*ApplicationHandler) (TCP_ConnectionState_t* ConnectionState,
- TCP_ConnectionBuffer_t* Buffer); /**< Port application handler */
- } TCP_PortState_t;
-
- /** Type define for a TCP packet header. */
- typedef struct
- {
- uint16_t SourcePort; /**< Source port of the TCP packet */
- uint16_t DestinationPort; /**< Destination port of the TCP packet */
-
- uint32_t SequenceNumber; /**< Data sequence number of the packet */
- uint32_t AcknowledgmentNumber; /**< Data acknowledgment number of the packet */
-
- unsigned Reserved : 4; /**< Reserved, must be all 0 */
- unsigned DataOffset : 4; /**< Offset of the data from the start of the header, in 4 byte chunks */
- uint8_t Flags; /**< TCP packet flags */
- uint16_t WindowSize; /**< Current data window size (bytes remaining in reception buffer) */
-
- uint16_t Checksum; /**< TCP checksum */
- uint16_t UrgentPointer; /**< Urgent data pointer */
- } TCP_Header_t;
-
- /* Function Prototypes: */
- void TCP_Init(void);
- void TCP_Task(void);
- bool TCP_SetPortState(const uint16_t Port,
- const uint8_t State,
- void (*Handler)(TCP_ConnectionState_t*, TCP_ConnectionBuffer_t*));
- uint8_t TCP_GetPortState(const uint16_t Port);
- bool TCP_SetConnectionState(const uint16_t Port,
- const IP_Address_t* RemoteAddress,
- const uint16_t RemotePort,
- const uint8_t State);
- uint8_t TCP_GetConnectionState(const uint16_t Port,
- const IP_Address_t* RemoteAddress,
- const uint16_t RemotePort);
- TCP_ConnectionInfo_t* TCP_GetConnectionInfo(const uint16_t Port,
- const IP_Address_t* RemoteAddress,
- const uint16_t RemotePort);
- int16_t TCP_ProcessTCPPacket(void* IPHeaderInStart,
- void* TCPHeaderInStart,
- void* TCPHeaderOutStart);
-
- #if defined(INCLUDE_FROM_TCP_C)
- static uint16_t TCP_Checksum16(void* TCPHeaderOutStart,
- const IP_Address_t* SourceAddress,
- const IP_Address_t* DestinationAddress,
- uint16_t TCPOutSize);
- #endif
-
-#endif
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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
- *
- * User Datagram Protocol (UDP) packet handling routines. This protocol handles high throughput, low
- * reliability packets which are typically used to encapsulate streaming data.
- */
-
-#define INCLUDE_FROM_UDP_C
-#include "UDP.h"
-
-/** Processes a UDP packet inside an Ethernet frame, and writes the appropriate response
- * to the output Ethernet frame if a sub-protocol handler has created a response packet.
- *
- * \param[in] IPHeaderInStart Pointer to the start of the incoming packet's IP header
- * \param[in] UDPHeaderInStart Pointer to the start of the incoming packet's UDP header
- * \param[out] UDPHeaderOutStart Pointer to the start of the outgoing packet's UDP header
- *
- * \return The number of bytes written to the out Ethernet frame if any, NO_RESPONSE otherwise
- */
-int16_t UDP_ProcessUDPPacket(void* IPHeaderInStart,
- void* UDPHeaderInStart,
- void* UDPHeaderOutStart)
-{
- UDP_Header_t* UDPHeaderIN = (UDP_Header_t*)UDPHeaderInStart;
- UDP_Header_t* UDPHeaderOUT = (UDP_Header_t*)UDPHeaderOutStart;
-
- int16_t RetSize = NO_RESPONSE;
-
- DecodeUDPHeader(UDPHeaderInStart);
-
- switch (SwapEndian_16(UDPHeaderIN->DestinationPort))
- {
- case UDP_PORT_DHCP_REQUEST:
- RetSize = DHCP_ProcessDHCPPacket(IPHeaderInStart,
- &((uint8_t*)UDPHeaderInStart)[sizeof(UDP_Header_t)],
- &((uint8_t*)UDPHeaderOutStart)[sizeof(UDP_Header_t)]);
- break;
- }
-
- /* Check to see if the protocol processing routine has filled out a response */
- if (RetSize > 0)
- {
- /* Fill out the response UDP packet header */
- UDPHeaderOUT->SourcePort = UDPHeaderIN->DestinationPort;
- UDPHeaderOUT->DestinationPort = UDPHeaderIN->SourcePort;
- UDPHeaderOUT->Checksum = 0;
- UDPHeaderOUT->Length = SwapEndian_16(sizeof(UDP_Header_t) + RetSize);
-
- /* Return the size of the response so far */
- return (sizeof(UDP_Header_t) + RetSize);
- }
-
- return NO_RESPONSE;
-}
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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 UDP.c.
- */
-
-#ifndef _UDP_H_
-#define _UDP_H_
-
- /* Includes: */
- #include <avr/io.h>
-
- #include "EthernetProtocols.h"
- #include "Ethernet.h"
- #include "ProtocolDecoders.h"
- #include "DHCP.h"
-
- /* Macros: */
- /** Source UDP port for a DHCP request. */
- #define UDP_PORT_DHCP_REQUEST 67
-
- /** Destination UDP port for a DHCP reply. */
- #define UDP_PORT_DHCP_REPLY 68
-
- /** Source UDP port for a DNS request/response. */
- #define UDP_PORT_DNS 53
-
- /* Type Defines: */
- /** Type define for a UDP packet header. */
- typedef struct
- {
- uint16_t SourcePort; /**< Packet source port */
- uint16_t DestinationPort; /**< Packet destination port */
- uint16_t Length; /**< Total packet length, in bytes */
- uint16_t Checksum; /**< Optional UDP packet checksum */
- } UDP_Header_t;
-
- /* Function Prototypes: */
- int16_t UDP_ProcessUDPPacket(void* IPHeaderInStart,
- void* UDPHeaderInStart,
- void* UDPHeaderOutStart);
-
-#endif
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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
- *
- * Simple webserver application for demonstrating the RNDIS demo and TCP/IP stack. This
- * application will serve up a static HTTP webpage when requested by the host.
- */
-
-#include "Webserver.h"
-
-/** HTTP server response header, for transmission before the page contents. This indicates to the host that a page exists at the
- * given location, and gives extra connection information.
- */
-const char PROGMEM HTTP200Header[] = "HTTP/1.1 200 OK\r\n"
- "Server: LUFA RNDIS\r\n"
- "Content-type: text/html\r\n"
- "Connection: close\r\n\r\n";
-
-/** HTTP server response header, for transmission before a resource not found error. This indicates to the host that the given
- * given URL is invalid, and gives extra error information.
- */
-const char PROGMEM HTTP404Header[] = "HTTP/1.1 404 Not Found\r\n"
- "Server: LUFA RNDIS\r\n"
- "Connection: close\r\n\r\n";
-
-/** HTTP page to serve to the host when a HTTP request is made. This page is too long for a single response, thus it is automatically
- * broken up into smaller blocks and sent as a series of packets each time the webserver application callback is run.
- */
-const char PROGMEM HTTPPage[] =
- "<html>"
- " <head>"
- " <title>"
- " LUFA Webserver Demo"
- " </title>"
- " </head>"
- " <body>"
- " <h1>Hello from your USB AVR!</h1>"
- " <p>"
- " Hello! Welcome to the LUFA RNDIS Demo Webserver test page, running on your USB AVR via the LUFA library. This demonstrates the HTTP webserver, TCP/IP stack and RNDIS demo all running atop the LUFA USB stack."
- " <br /><br />"
- " <small>Project Information: <a href=\"http://www.lufa-lib.org\">http://www.lufa-lib.org</a>.</small>"
- " <hr />"
- " <i>LUFA Version: </i>" LUFA_VERSION_STRING
- " </p>"
- " </body>"
- "</html>";
-
-
-/** Initializes the Webserver application, opening the appropriate HTTP port in the TCP handler and registering the application
- * callback routine for packets sent to the HTTP protocol port.
- */
-void Webserver_Init(void)
-{
- /* Open the HTTP port in the TCP protocol so that HTTP connections to the device can be established */
- TCP_SetPortState(TCP_PORT_HTTP, TCP_Port_Open, Webserver_ApplicationCallback);
-}
-
-/** Indicates if a given request equals the given HTTP command.
- *
- * \param[in] RequestHeader HTTP request made by the host
- * \param[in] Command HTTP command to compare the request to
- *
- * \return Boolean \c true if the command matches the request, \c false otherwise
- */
-static bool IsHTTPCommand(uint8_t* RequestHeader,
- char* Command)
-{
- /* Returns true if the non null terminated string in RequestHeader matches the null terminated string Command */
- return (strncmp((char*)RequestHeader, Command, strlen(Command)) == 0);
-}
-
-/** Application callback routine, executed each time the TCP processing task runs. This callback determines what request
- * has been made (if any), and serves up appropriate responses.
- *
- * \param[in] ConnectionState Pointer to a TCP Connection State structure giving connection information
- * \param[in,out] Buffer Pointer to the application's send/receive packet buffer
- */
-void Webserver_ApplicationCallback(TCP_ConnectionState_t* const ConnectionState,
- TCP_ConnectionBuffer_t* const Buffer)
-{
- char* BufferDataStr = (char*)Buffer->Data;
- static uint8_t PageBlock = 0;
-
- /* Check to see if a packet has been received on the HTTP port from a remote host */
- if (TCP_APP_HAS_RECEIVED_PACKET(Buffer))
- {
- if (IsHTTPCommand(Buffer->Data, "GET"))
- {
- if (IsHTTPCommand(Buffer->Data, "GET / "))
- {
- PageBlock = 0;
-
- /* Copy the HTTP 200 response header into the packet buffer */
- strcpy_P(BufferDataStr, HTTP200Header);
-
- /* Send the buffer contents to the host */
- TCP_APP_SEND_BUFFER(Buffer, strlen(BufferDataStr));
-
- /* Lock the buffer to Device->Host transmissions only while we send the page contents */
- TCP_APP_CAPTURE_BUFFER(Buffer);
- }
- else
- {
- /* Copy the HTTP 404 response header into the packet buffer */
- strcpy_P(BufferDataStr, HTTP404Header);
-
- /* Send the buffer contents to the host */
- TCP_APP_SEND_BUFFER(Buffer, strlen(BufferDataStr));
-
- /* All data sent, close the connection */
- TCP_APP_CLOSECONNECTION(ConnectionState);
- }
- }
- else if (IsHTTPCommand(Buffer->Data, "HEAD"))
- {
- if (IsHTTPCommand(Buffer->Data, "HEAD / "))
- {
- /* Copy the HTTP response header into the packet buffer */
- strcpy_P(BufferDataStr, HTTP200Header);
-
- /* Send the buffer contents to the host */
- TCP_APP_SEND_BUFFER(Buffer, strlen(BufferDataStr));
- }
- else
- {
- /* Copy the HTTP response header into the packet buffer */
- strcpy_P(BufferDataStr, HTTP404Header);
-
- /* Send the buffer contents to the host */
- TCP_APP_SEND_BUFFER(Buffer, strlen(BufferDataStr));
- }
-
- /* All data sent, close the connection */
- TCP_APP_CLOSECONNECTION(ConnectionState);
- }
- else if (IsHTTPCommand(Buffer->Data, "TRACE"))
- {
- /* Echo the host's query back to the host */
- TCP_APP_SEND_BUFFER(Buffer, Buffer->Length);
-
- /* All data sent, close the connection */
- TCP_APP_CLOSECONNECTION(ConnectionState);
- }
- else
- {
- /* Unknown request, just clear the buffer (drop the packet) */
- TCP_APP_CLEAR_BUFFER(Buffer);
- }
- }
- else if (TCP_APP_HAVE_CAPTURED_BUFFER(Buffer))
- {
- uint16_t RemLength = strlen_P(&HTTPPage[PageBlock * HTTP_REPLY_BLOCK_SIZE]);
- uint16_t Length;
-
- /* Determine the length of the loaded block */
- Length = MIN(RemLength, HTTP_REPLY_BLOCK_SIZE);
-
- /* Copy the next buffer sized block of the page to the packet buffer */
- strncpy_P(BufferDataStr, &HTTPPage[PageBlock * HTTP_REPLY_BLOCK_SIZE], Length);
-
- /* Send the buffer contents to the host */
- TCP_APP_SEND_BUFFER(Buffer, Length);
-
- /* Check to see if the entire page has been sent */
- if (PageBlock++ == (sizeof(HTTPPage) / HTTP_REPLY_BLOCK_SIZE))
- {
- /* Unlock the buffer so that the host can fill it with future packets */
- TCP_APP_RELEASE_BUFFER(Buffer);
-
- /* Close the connection to the host */
- TCP_APP_CLOSECONNECTION(ConnectionState);
- }
- }
-}
-
+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 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 Webserver.c.
- */
-
-#ifndef _WEBSERVER_H_
-#define _WEBSERVER_H_
-
- /* Includes: */
- #include <avr/io.h>
- #include <avr/pgmspace.h>
-
- #include <LUFA/Version.h>
-
- #include "TCP.h"
-
- /* Macros: */
- /** Maximum size of a HTTP response per transmission */
- #define HTTP_REPLY_BLOCK_SIZE 128
-
- /* Function Prototypes: */
- void Webserver_Init(void);
- void Webserver_ApplicationCallback(TCP_ConnectionState_t* const ConnectionState,
- TCP_ConnectionBuffer_t* const Buffer);
-
-#endif
-
#include "RNDISEthernet.h"
+/** Global to store the incoming frame from the host before it is processed by the device. */
+static Ethernet_Frame_Info_t FrameIN;
+
+/** Global to store the outgoing frame created in the device before it is sent to the host. */
+static Ethernet_Frame_Info_t FrameOUT;
+
/** Main program entry point. This routine configures the hardware required by the application, then
* enters a loop to run the application tasks in sequence.
*/
{
SetupHardware();
- /* Webserver Initialization */
- TCP_Init();
- Webserver_Init();
-
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
GlobalInterruptEnable();
for (;;)
{
Ethernet_Task();
- TCP_Task();
RNDIS_Task();
USB_USBTask();
}
/* Indicate packet processing started */
LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
- /* Process the ethernet frame - replace this with your own Ethernet handler code as desired */
- Ethernet_ProcessPacket();
+ // TODO: Process FrameIN here, and optionally fill FrameOUT.
/* Indicate packet processing complete */
LEDs_SetAllLEDs(LEDMASK_USB_READY);
#include "Descriptors.h"
#include "Lib/RNDIS.h"
- #include "Lib/Ethernet.h"
- #include "Lib/TCP.h"
- #include "Lib/ARP.h"
- #include "Lib/Webserver.h"
+
#include "Config/AppConfig.h"
#include <LUFA/Drivers/USB/USB.h>
/** LED mask for the library LED driver, to indicate that the USB interface is busy. */
#define LEDMASK_USB_BUSY LEDS_LED2
+ /* Type Defines: */
+ /** Type define for an Ethernet frame buffer data and information structure. */
+ typedef struct
+ {
+ uint8_t FrameData[ETHERNET_FRAME_SIZE_MAX]; /**< Ethernet frame contents. */
+ uint16_t FrameLength; /**< Length in bytes of the Ethernet frame stored in the buffer. */
+ } Ethernet_Frame_Info_t;
+
/* Function Prototypes: */
void SetupHardware(void);
void RNDIS_Task(void);
* documentation pages. It is not a project source file.
*/
-/** \mainpage RNDIS Class Ethernet Demo (with Webserver/Telnet)
+/** \mainpage RNDIS Class Ethernet Demo
*
* \section Sec_Compat Demo Compatibility:
*
* This gives a simple reference application for implementing
* a CDC RNDIS device acting as a simple network interface for
* ethernet packet exchange. RNDIS is a proprietary Microsoft
- * standard; this demo will only work on Windows 2000 (manually
- * patched with the Microsoft RNDIS hotfix) and above (with no
- * manual patches), or on the latest Linux kernels.
+ * standard; this demo will only work on Windows XP, or on modern
+ * Linux kernels.
*
* Before running, you will need to install the INF file that
* is located in the RNDISEthernet project directory. This will
*
* When enumerated, this demo will install as a new network
* adapter which ethernet packets can be sent to and received
- * from. Running on top of the adapter is a very simple TCP/IP
- * stack with a HTTP webserver and TELNET host which can be
- * accessed through a web browser at IP address 10.0.0.2:80 or
- * through a TELNET client at 10.0.0.2:25. This device also supports
- * ping echos via the ICMP protocol.
- *
- * \note The TCP/IP stack in this demo has a number of limitations
- * and should serve as an example only - it is not fully featured nor
- * compliant to the TCP/IP specification. For complete projects, it is
- * recommended that it be replaced with an external open source TCP/IP
- * stack that is feature complete, such as the uIP stack.
+ * from. When packets are received from the host, the on-board LEDs should
+ * flash.
*
* \section Sec_Options Project Options
*
* <th><b>Description:</b></th>
* </tr>
* <tr>
- * <td>CLIENT_IP_ADDRESS</td>
- * <td>AppConfig.h</td>
- * <td>Configures the IP address given to the client (PC) via the DHCP server.</td>
- * </tr>
- * <tr>
- * <td>SERVER_IP_ADDRESS</td>
- * <td>AppConfig.h</td>
- * <td>Configures the IP address of the virtual server.</td>
- * </tr>
- * <tr>
* <td>ADAPTER_MAC_ADDRESS</td>
* <td>AppConfig.h</td>
* <td>Configures the MAC address of the RNDIS adapter on the host (PC) side.</td>
* </tr>
- * <tr>
- * <td>SERVER_MAC_ADDRESS</td>
- * <td>AppConfig.h</td>
- * <td>Configures the MAC address of the virtual server on the network.</td>
- * </tr>
- * <tr>
- * <td>NO_DECODE_ETHERNET</td>
- * <td>AppConfig.h</td>
- * <td>When defined, received Ethernet headers will not be decoded and printed to the device serial port.</td>
- * </tr>
- * <tr>
- * <td>NO_DECODE_ARP</td>
- * <td>AppConfig.h</td>
- * <td>When defined, received ARP headers will not be decoded and printed to the device serial port.</td>
- * </tr>
- * <tr>
- * <td>NO_DECODE_IP</td>
- * <td>AppConfig.h</td>
- * <td>When defined, received IP headers will not be decoded and printed to the device serial port.</td>
- * </tr>
- * <tr>
- * <td>NO_DECODE_ICMP</td>
- * <td>AppConfig.h</td>
- * <td>When defined, received ICMP headers will not be decoded and printed to the device serial port.</td>
- * </tr>
- * <tr>
- * <td>NO_DECODE_TCP</td>
- * <td>AppConfig.h</td>
- * <td>When defined, received TCP headers will not be decoded and printed to the device serial port.</td>
- * </tr>
- * <tr>
- * <td>NO_DECODE_UDP</td>
- * <td>AppConfig.h</td>
- * <td>When defined, received UDP headers will not be decoded and printed to the device serial port.</td>
- * </tr>
- * <tr>
- * <td>NO_DECODE_DHCP</td>
- * <td>AppConfig.h</td>
- * <td>When defined, received DHCP headers will not be decoded and printed to the device serial port.</td>
- * </tr>
* </table>
*/
F_USB = $(F_CPU)
OPTIMIZATION = s
TARGET = RNDISEthernet
-SRC = $(TARGET).c Descriptors.c Lib/Ethernet.c Lib/ProtocolDecoders.c Lib/RNDIS.c Lib/ICMP.c Lib/TCP.c Lib/UDP.c \
- Lib/DHCP.c Lib/ARP.c Lib/IP.c Lib/Webserver.c $(LUFA_SRC_USB) $(LUFA_SRC_SERIAL)
+SRC = $(TARGET).c Descriptors.c Lib/RNDIS.c $(LUFA_SRC_USB) $(LUFA_SRC_SERIAL)
LUFA_PATH = ../../../../LUFA
CC_FLAGS = -DUSE_LUFA_CONFIG_HEADER -IConfig/
LD_FLAGS =
LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
uint16_t PacketLength;
- RNDIS_Host_ReadPacket(&Ethernet_RNDIS_Interface, &PacketBuffer, &PacketLength);
+ RNDIS_Host_ReadPacket(&Ethernet_RNDIS_Interface, PacketBuffer, sizeof(PacketBuffer), &PacketLength);
printf_P(PSTR("***PACKET (Size %d)***\r\n"), PacketLength);
/** \page Page_ChangeLog Project Changelog
*
* \section Sec_ChangeLogXXXXXX Version XXXXXX
- * No changelog information.
+ * <b>Changed:</b>
+ * - Core:
+ * - RNDIS_Device_ReadPacket() now takes in an explicit destination buffer length, rather than assuming it is ETHERNET_MAX_FRAME_SIZE in length.
+ * - RNDIS_Host_ReadPacket() now takes in an explicit destination buffer length, rather than assuming it is ETHERNET_MAX_FRAME_SIZE in length.
+ * - Library Applications:
+ * - The hand-rolled TCP/IP stack has been removed from the LowLevel and ClassDriver RNDIS examples, as it is incomplete and should be replaced
+ * with a proper network stack anyway.
*
* \section Sec_ChangeLog210130 Version 210130
* <b>New:</b>
* areas relevant to making older projects compatible with the API changes of each new release.
*
* \section Sec_MigrationXXXXXX Version XXXXXX
- * No migration information.
+ * <b>Device Mode</b>
+ * - The \c RNDIS_Device_ReadPacket() function has an additional parameter that should be set to the destination buffer's length.
+ * <b>Host Mode</b>
+ * - The \c RNDIS_Host_ReadPacket() function has an additional parameter that should be set to the destination buffer's length.
*
* \section Sec_Migration210130 Version 210130
* <b>Device Mode</b>
uint8_t RNDIS_Device_ReadPacket(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo,
void* Buffer,
- uint16_t* const PacketLength)
+ const uint16_t BufferSize,
+ uint16_t* PacketLength)
{
if ((USB_DeviceState != DEVICE_STATE_Configured) ||
(RNDISInterfaceInfo->State.CurrRNDISState != RNDIS_Data_Initialized))
return ENDPOINT_RWSTREAM_DeviceDisconnected;
}
- Endpoint_SelectEndpoint(RNDISInterfaceInfo->Config.DataOUTEndpoint.Address);
-
*PacketLength = 0;
+ Endpoint_SelectEndpoint(RNDISInterfaceInfo->Config.DataOUTEndpoint.Address);
+
if (!(Endpoint_IsOUTReceived()))
return ENDPOINT_RWSTREAM_NoError;
return RNDIS_ERROR_LOGICAL_CMD_FAILED;
}
- *PacketLength = (uint16_t)le32_to_cpu(RNDISPacketHeader.DataLength);
+ const size_t ExpectedLength = (uint16_t)le32_to_cpu(RNDISPacketHeader.DataLength);
+
+ if (ExpectedLength > BufferSize)
+ *PacketLength = BufferSize;
+ else
+ *PacketLength = ExpectedLength;
Endpoint_Read_Stream_LE(Buffer, *PacketLength, NULL);
+ if (ExpectedLength > BufferSize)
+ Endpoint_Discard_Stream(ExpectedLength - BufferSize, NULL);
Endpoint_ClearOUT();
return ENDPOINT_RWSTREAM_NoError;
*
* \param[in,out] RNDISInterfaceInfo Pointer to a structure containing an RNDIS Class configuration and state.
* \param[out] Buffer Pointer to a buffer where the packer data is to be written to.
- * \param[out] PacketLength Pointer to where the length in bytes of the read packet is to be stored.
+ * \param[in] BufferSize Size in bytes of the supplied buffer to store the read packet.
+ * \param[out] PacketLength Pointer to a value indicating the length in bytes of the read packet.
*
* \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum.
*/
uint8_t RNDIS_Device_ReadPacket(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo,
void* Buffer,
- uint16_t* const PacketLength) ATTR_NON_NULL_PTR_ARG(1);
+ const uint16_t BufferSize,
+ uint16_t* PacketLength) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2) ATTR_NON_NULL_PTR_ARG(4);
/** Sends the given packet to the attached RNDIS device, after adding a RNDIS packet message header.
*
*/
uint8_t RNDIS_Device_SendPacket(USB_ClassInfo_RNDIS_Device_t* const RNDISInterfaceInfo,
void* Buffer,
- const uint16_t PacketLength) ATTR_NON_NULL_PTR_ARG(1);
+ const uint16_t PacketLength) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
/* Private Interface - For use in library only: */
#if !defined(__DOXYGEN__)
uint8_t RNDIS_Host_ReadPacket(USB_ClassInfo_RNDIS_Host_t* const RNDISInterfaceInfo,
void* Buffer,
+ const uint16_t BufferSize,
uint16_t* const PacketLength)
{
uint8_t ErrorCode;
return ErrorCode;
}
- *PacketLength = (uint16_t)le32_to_cpu(DeviceMessage.DataLength);
-
Pipe_Discard_Stream(le32_to_cpu(DeviceMessage.DataOffset) -
(sizeof(RNDIS_Packet_Message_t) - sizeof(RNDIS_Message_Header_t)),
NULL);
+ const size_t ExpectedLength = (uint16_t)le32_to_cpu(DeviceMessage.DataLength);
+
+ if (ExpectedLength > BufferSize)
+ *PacketLength = BufferSize;
+ else
+ *PacketLength = ExpectedLength;
+
Pipe_Read_Stream_LE(Buffer, *PacketLength, NULL);
+ if (ExpectedLength > BufferSize)
+ Pipe_Discard_Stream(ExpectedLength - BufferSize, NULL);
if (!(Pipe_BytesInPipe()))
Pipe_ClearIN();
*
* \param[in,out] RNDISInterfaceInfo Pointer to a structure containing an RNDIS Class host configuration and state.
* \param[out] Buffer Pointer to a buffer where the packer data is to be written to.
+ * \param[in] BufferSize Size in bytes of the supplied buffer to store the read packet.
* \param[out] PacketLength Pointer to where the length in bytes of the read packet is to be stored.
*
* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
*/
uint8_t RNDIS_Host_ReadPacket(USB_ClassInfo_RNDIS_Host_t* const RNDISInterfaceInfo,
void* Buffer,
+ const uint16_t BufferSize,
uint16_t* const PacketLength) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2)
- ATTR_NON_NULL_PTR_ARG(3);
+ ATTR_NON_NULL_PTR_ARG(4);
/** Sends the given packet to the attached RNDIS device, after adding a RNDIS packet message header.
*
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