mirror of
https://github.com/qmk/qmk_firmware.git
synced 2024-12-24 18:39:53 +00:00
204 lines
7.3 KiB
C
204 lines
7.3 KiB
C
|
/*
|
||
|
|
LUFA Library
|
||
|
|
Copyright (C) Dean Camera, 2017.
|
||
|
|
|
||
|
|
dean [at] fourwalledcubicle [dot] com
|
||
|
|
www.lufa-lib.org
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com)
|
||
|
|
|
||
|
|
Permission to use, copy, modify, distribute, and sell this
|
||
|
|
software and its documentation for any purpose is hereby granted
|
||
|
|
without fee, provided that the above copyright notice appear in
|
||
|
|
all copies and that both that the copyright notice and this
|
||
|
|
permission notice and warranty disclaimer appear in supporting
|
||
|
|
documentation, and that the name of the author not be used in
|
||
|
|
advertising or publicity pertaining to distribution of the
|
||
|
|
software without specific, written prior permission.
|
||
|
|
|
||
|
|
The author disclaims all warranties with regard to this
|
||
|
|
software, including all implied warranties of merchantability
|
||
|
|
and fitness. In no event shall the author be liable for any
|
||
|
|
special, indirect or consequential damages or any damages
|
||
|
|
whatsoever resulting from loss of use, data or profits, whether
|
||
|
|
in an action of contract, negligence or other tortious action,
|
||
|
|
arising out of or in connection with the use or performance of
|
||
|
|
this software.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/** \file
|
||
|
|
*
|
||
|
|
* 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);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|