--- /dev/null
+/*\r
+ LUFA Library\r
+ Copyright (C) Dean Camera, 2009.\r
+ \r
+ dean [at] fourwalledcubicle [dot] com\r
+ www.fourwalledcubicle.com\r
+*/\r
+\r
+/*\r
+ Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
+\r
+ Permission to use, copy, modify, and distribute this software\r
+ and its documentation for any purpose and without fee is hereby\r
+ granted, provided that the above copyright notice appear in all\r
+ copies and that both that the copyright notice and this\r
+ permission notice and warranty disclaimer appear in supporting\r
+ documentation, and that the name of the author not be used in\r
+ advertising or publicity pertaining to distribution of the\r
+ software without specific, written prior permission.\r
+\r
+ The author disclaim all warranties with regard to this\r
+ software, including all implied warranties of merchantability\r
+ and fitness. In no event shall the author be liable for any\r
+ special, indirect or consequential damages or any damages\r
+ whatsoever resulting from loss of use, data or profits, whether\r
+ in an action of contract, negligence or other tortious action,\r
+ arising out of or in connection with the use or performance of\r
+ this software.\r
+*/\r
+\r
+/** \file\r
+ *\r
+ * Simple webserver application for demonstrating the RNDIS demo and TCP/IP stack. This\r
+ * application will serve up a static HTTP webpage when requested by the host.\r
+ */\r
+\r
+#include "Webserver.h"\r
+\r
+/** HTTP server response header, for transmission before the page contents. This indicates to the host that a page exists at the\r
+ * given location, and gives extra connection information.\r
+ */\r
+char PROGMEM HTTPHeader[] = "HTTP/1.1 200 OK\r\n"\r
+ "Server: LUFA RNDIS\r\n"\r
+ "Content-type: text/html\r\n"\r
+ "Connection: close\r\n\r\n";\r
+\r
+/** 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\r
+ * broken up into smaller blocks and sent as a series of packets each time the webserver application callback is run.\r
+ */\r
+char PROGMEM HTTPPage[] = \r
+ "<html>"\r
+ " <head>"\r
+ " <title>"\r
+ " LUFA Webserver Demo"\r
+ " </title>"\r
+ " </head>"\r
+ " <body>"\r
+ " <h1>Hello from your USB AVR!</h1>"\r
+ " <p>"\r
+ " 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."\r
+ " <br /><br />"\r
+ " <small>Project Information: <a href=\"http://www.fourwalledcubicle.com/LUFA.php\">http://www.fourwalledcubicle.com/LUFA.php</a>.</small>"\r
+ " <hr />"\r
+ " <i>LUFA Version: </i>" LUFA_VERSION_STRING\r
+ " </p>"\r
+ " </body>"\r
+ "</html>";\r
+\r
+\r
+/** Initializes the Webserver application, opening the appropriate HTTP port in the TCP handler and registering the application\r
+ * callback routine for packets sent to the HTTP protocol port.\r
+ */\r
+void Webserver_Init(void)\r
+{\r
+ /* Open the HTTP port in the TCP protocol so that HTTP connections to the device can be established */\r
+ TCP_SetPortState(TCP_PORT_HTTP, TCP_Port_Open, Webserver_ApplicationCallback);\r
+}\r
+\r
+/** Indicates if a given request equals the given HTTP command.\r
+ *\r
+ * \param RequestHeader HTTP request made by the host\r
+ * \param Command HTTP command to compare the request to\r
+ *\r
+ * \return Boolean true if the command matches the request, false otherwise\r
+ */\r
+static bool IsHTTPCommand(uint8_t* RequestHeader, char* Command)\r
+{\r
+ /* Returns true if the non null terminated string in RequestHeader matches the null terminated string Command */\r
+ return (strncmp((char*)RequestHeader, Command, strlen(Command)) == 0);\r
+}\r
+\r
+/** Application callback routine, executed each time the TCP processing task runs. This callback determines what request\r
+ * has been made (if any), and serves up appropriate responses.\r
+ *\r
+ * \param ConnectionState Pointer to a TCP Connection State structure giving connection information\r
+ * \param Buffer Pointer to the application's send/receive packet buffer\r
+ */\r
+void Webserver_ApplicationCallback(TCP_ConnectionState_t* ConnectionState, TCP_ConnectionBuffer_t* Buffer)\r
+{\r
+ char* BufferDataStr = (char*)Buffer->Data;\r
+ static uint8_t PageBlock = 0;\r
+ \r
+ /* Check to see if a packet has been received on the HTTP port from a remote host */\r
+ if (TCP_APP_HAS_RECEIVED_PACKET(Buffer))\r
+ {\r
+ if (IsHTTPCommand(Buffer->Data, "GET"))\r
+ {\r
+ PageBlock = 0;\r
+\r
+ /* Copy the HTTP response header into the packet buffer */\r
+ strcpy_P(BufferDataStr, HTTPHeader);\r
+ \r
+ /* Send the buffer contents to the host */\r
+ TCP_APP_SEND_BUFFER(Buffer, strlen(BufferDataStr));\r
+\r
+ /* Lock the buffer to Device->Host transmissions only while we send the page contents */\r
+ TCP_APP_CAPTURE_BUFFER(Buffer);\r
+ }\r
+ else if (IsHTTPCommand(Buffer->Data, "HEAD"))\r
+ {\r
+ /* Copy the HTTP response header into the packet buffer */\r
+ strcpy_P(BufferDataStr, HTTPHeader);\r
+\r
+ /* Send the buffer contents to the host */\r
+ TCP_APP_SEND_BUFFER(Buffer, strlen(BufferDataStr));\r
+ }\r
+ else if (IsHTTPCommand(Buffer->Data, "TRACE"))\r
+ {\r
+ /* Echo the host's query back to the host */\r
+ TCP_APP_SEND_BUFFER(Buffer, Buffer->Length);\r
+ }\r
+ else\r
+ {\r
+ /* Unknown request, just clear the buffer (drop the packet) */\r
+ TCP_APP_CLEAR_BUFFER(Buffer);\r
+ }\r
+ }\r
+ else if (TCP_APP_HAVE_CAPTURED_BUFFER(Buffer))\r
+ {\r
+ uint16_t RemLength = strlen_P(&HTTPPage[PageBlock * HTTP_REPLY_BLOCK_SIZE]);\r
+ uint16_t Length;\r
+ \r
+ /* Determine the length of the loaded block */\r
+ Length = ((RemLength > HTTP_REPLY_BLOCK_SIZE) ? HTTP_REPLY_BLOCK_SIZE : RemLength);\r
+\r
+ /* Copy the next buffer sized block of the page to the packet buffer */\r
+ strncpy_P(BufferDataStr, &HTTPPage[PageBlock * HTTP_REPLY_BLOCK_SIZE], Length);\r
+ \r
+ /* Send the buffer contents to the host */\r
+ TCP_APP_SEND_BUFFER(Buffer, Length);\r
+\r
+ /* Check to see if the entire page has been sent */\r
+ if (PageBlock++ == (sizeof(HTTPPage) / HTTP_REPLY_BLOCK_SIZE))\r
+ {\r
+ /* Unlock the buffer so that the host can fill it with future packets */\r
+ TCP_APP_RELEASE_BUFFER(Buffer);\r
+ \r
+ /* Close the connection to the host */\r
+ TCP_APP_CLOSECONNECTION(ConnectionState);\r
+ }\r
+ }\r
+}\r
projects / pub / lufa.git / blobdiff