From 74298f8ca11dc8d3b0359d1d4e124d6494c3eeac Mon Sep 17 00:00:00 2001 From: Nicolas Schodet Date: Fri, 10 Apr 2009 01:15:42 +0200 Subject: * digital/avr/modules/usb: - imported LUFA. --- .../usb/lufa/Demos/RNDISEthernet/Webserver.c | 162 +++++++++++++++++++++ 1 file changed, 162 insertions(+) create mode 100644 digital/avr/modules/usb/lufa/Demos/RNDISEthernet/Webserver.c (limited to 'digital/avr/modules/usb/lufa/Demos/RNDISEthernet/Webserver.c') diff --git a/digital/avr/modules/usb/lufa/Demos/RNDISEthernet/Webserver.c b/digital/avr/modules/usb/lufa/Demos/RNDISEthernet/Webserver.c new file mode 100644 index 00000000..c07f2c8b --- /dev/null +++ b/digital/avr/modules/usb/lufa/Demos/RNDISEthernet/Webserver.c @@ -0,0 +1,162 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2009. + + dean [at] fourwalledcubicle [dot] com + www.fourwalledcubicle.com +*/ + +/* + Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com) + + Permission to use, copy, modify, and distribute this software + and its documentation for any purpose and without fee is hereby + granted, provided that the above copyright notice appear in all + copies and that both that the copyright notice and this + permission notice and warranty disclaimer appear in supporting + documentation, and that the name of the author not be used in + advertising or publicity pertaining to distribution of the + software without specific, written prior permission. + + The author disclaim all warranties with regard to this + software, including all implied warranties of merchantability + and fitness. In no event shall the author be liable for any + special, indirect or consequential damages or any damages + whatsoever resulting from loss of use, data or profits, whether + in an action of contract, negligence or other tortious action, + arising out of or in connection with the use or performance of + this software. +*/ + +/** \file + * + * 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. + */ +char PROGMEM HTTPHeader[] = "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 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. + */ +char PROGMEM HTTPPage[] = + "" + " " + " " + " LUFA Webserver Demo" + " " + " " + " " + "

Hello from your USB AVR!

" + "

" + " 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." + "

" + " Project Information: http://www.fourwalledcubicle.com/LUFA.php." + "


" + " LUFA Version: " LUFA_VERSION_STRING + "

" + " " + ""; + + +/** 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 RequestHeader HTTP request made by the host + * \param Command HTTP command to compare the request to + * + * \return Boolean true if the command matches the request, 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 ConnectionState Pointer to a TCP Connection State structure giving connection information + * \param Buffer Pointer to the application's send/receive packet buffer + */ +void Webserver_ApplicationCallback(TCP_ConnectionState_t* ConnectionState, TCP_ConnectionBuffer_t* 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")) + { + PageBlock = 0; + + /* Copy the HTTP response header into the packet buffer */ + strcpy_P(BufferDataStr, HTTPHeader); + + /* 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 if (IsHTTPCommand(Buffer->Data, "HEAD")) + { + /* Copy the HTTP response header into the packet buffer */ + strcpy_P(BufferDataStr, HTTPHeader); + + /* Send the buffer contents to the host */ + TCP_APP_SEND_BUFFER(Buffer, strlen(BufferDataStr)); + } + else if (IsHTTPCommand(Buffer->Data, "TRACE")) + { + /* Echo the host's query back to the host */ + TCP_APP_SEND_BUFFER(Buffer, Buffer->Length); + } + 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); + } + } +} -- cgit v1.2.3