diff options
Diffstat (limited to 'Projects/Webserver/Lib/HTTPServerApp.c')
-rw-r--r-- | Projects/Webserver/Lib/HTTPServerApp.c | 578 |
1 files changed, 289 insertions, 289 deletions
diff --git a/Projects/Webserver/Lib/HTTPServerApp.c b/Projects/Webserver/Lib/HTTPServerApp.c index 08d8494337..646410f3d7 100644 --- a/Projects/Webserver/Lib/HTTPServerApp.c +++ b/Projects/Webserver/Lib/HTTPServerApp.c @@ -1,289 +1,289 @@ -/*
- LUFA Library
- Copyright (C) Dean Camera, 2010.
-
- dean [at] fourwalledcubicle [dot] com
- www.fourwalledcubicle.com
-*/
-
-/*
- Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
-
- Permission to use, copy, modify, distribute, and sell this
- software and its documentation for any purpose is hereby granted
- without fee, provided that the above copyright notice appear in
- all copies and that both that the copyright notice and this
- permission notice and warranty disclaimer appear in supporting
- documentation, and that the name of the author not be used in
- advertising or publicity pertaining to distribution of the
- software without specific, written prior permission.
-
- The author disclaim all warranties with regard to this
- software, including all implied warranties of merchantability
- and fitness. In no event shall the author be liable for any
- special, indirect or consequential damages or any damages
- whatsoever resulting from loss of use, data or profits, whether
- in an action of contract, negligence or other tortious action,
- arising out of or in connection with the use or performance of
- this software.
-*/
-
-/** \file
- *
- * Simple HTTP Webserver Application. When connected to the uIP stack,
- * this will serve out files to HTTP clients on port 80.
- */
-
-#define INCLUDE_FROM_HTTPSERVERAPP_C
-#include "HTTPServerApp.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 " LUFA_VERSION_STRING "\r\n"
- "Connection: close\r\n"
- "MIME-version: 1.0\r\n"
- "Content-Type: ";
-
-/** 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 " LUFA_VERSION_STRING "\r\n"
- "Connection: close\r\n"
- "MIME-version: 1.0\r\n"
- "Content-Type: text/plain\r\n\r\n"
- "Error 404: File Not Found: /";
-
-/** Default filename to fetch when a directory is requested */
-const char PROGMEM DefaultDirFileName[] = "index.htm";
-
-/** Default MIME type sent if no other MIME type can be determined. */
-const char PROGMEM DefaultMIMEType[] = "text/plain";
-
-/** List of MIME types for each supported file extension. */
-const MIME_Type_t MIMETypes[] =
- {
- {.Extension = "htm", .MIMEType = "text/html"},
- {.Extension = "jpg", .MIMEType = "image/jpeg"},
- {.Extension = "gif", .MIMEType = "image/gif"},
- {.Extension = "bmp", .MIMEType = "image/bmp"},
- {.Extension = "png", .MIMEType = "image/png"},
- {.Extension = "ico", .MIMEType = "image/x-icon"},
- {.Extension = "exe", .MIMEType = "application/octet-stream"},
- {.Extension = "gz", .MIMEType = "application/x-gzip"},
- {.Extension = "zip", .MIMEType = "application/zip"},
- {.Extension = "pdf", .MIMEType = "application/pdf"},
- };
-
-/** FATFs structure to hold the internal state of the FAT driver for the dataflash contents. */
-FATFS DiskFATState;
-
-
-/** Initialization function for the simple HTTP webserver. */
-void HTTPServerApp_Init(void)
-{
- /* Listen on port 80 for HTTP connections from hosts */
- uip_listen(HTONS(HTTP_SERVER_PORT));
-
- /* Mount the dataflash disk via FatFS */
- f_mount(0, &DiskFATState);
-}
-
-/** uIP stack application callback for the simple HTTP webserver. This function must be called each time the
- * TCP/IP stack needs a TCP packet to be processed.
- */
-void HTTPServerApp_Callback(void)
-{
- uip_tcp_appstate_t* const AppState = &uip_conn->appstate;
-
- if (uip_aborted() || uip_timedout() || uip_closed())
- {
- /* Lock to the closed state so that no further processing will occur on the connection */
- AppState->HTTPServer.CurrentState = WEBSERVER_STATE_Closing;
- AppState->HTTPServer.NextState = WEBSERVER_STATE_Closing;
- }
-
- if (uip_connected())
- {
- /* New connection - initialize connection state values */
- AppState->HTTPServer.CurrentState = WEBSERVER_STATE_OpenRequestedFile;
- AppState->HTTPServer.NextState = WEBSERVER_STATE_OpenRequestedFile;
- AppState->HTTPServer.FileOpen = false;
- AppState->HTTPServer.ACKedFilePos = 0;
- AppState->HTTPServer.SentChunkSize = 0;
- }
-
- if (uip_acked())
- {
- /* Add the amount of ACKed file data to the total sent file bytes counter */
- AppState->HTTPServer.ACKedFilePos += AppState->HTTPServer.SentChunkSize;
-
- /* Progress to the next state once the current state's data has been ACKed */
- AppState->HTTPServer.CurrentState = AppState->HTTPServer.NextState;
- }
-
- if (uip_rexmit())
- {
- /* Return file pointer to the last ACKed position */
- f_lseek(&AppState->HTTPServer.FileHandle, AppState->HTTPServer.ACKedFilePos);
- }
-
- if (uip_rexmit() || uip_acked() || uip_newdata() || uip_connected() || uip_poll())
- {
- switch (AppState->HTTPServer.CurrentState)
- {
- case WEBSERVER_STATE_OpenRequestedFile:
- HTTPServerApp_OpenRequestedFile();
- break;
- case WEBSERVER_STATE_SendResponseHeader:
- HTTPServerApp_SendResponseHeader();
- break;
- case WEBSERVER_STATE_SendData:
- HTTPServerApp_SendData();
- break;
- case WEBSERVER_STATE_Closing:
- /* Connection is being terminated for some reason - close file handle */
- f_close(&AppState->HTTPServer.FileHandle);
- AppState->HTTPServer.FileOpen = false;
-
- /* If connection is not already closed, close it */
- uip_close();
-
- AppState->HTTPServer.CurrentState = WEBSERVER_STATE_Closed;
- AppState->HTTPServer.NextState = WEBSERVER_STATE_Closed;
- break;
- }
- }
-}
-
-/** HTTP Server State handler for the Request Process state. This state manages the processing of incoming HTTP
- * GET requests to the server from the receiving HTTP client.
- */
-static void HTTPServerApp_OpenRequestedFile(void)
-{
- uip_tcp_appstate_t* const AppState = &uip_conn->appstate;
- char* const AppData = (char*)uip_appdata;
-
- /* No HTTP header received from the client, abort processing */
- if (!(uip_newdata()))
- return;
-
- char* RequestToken = strtok(AppData, " ");
- char* RequestedFileName = strtok(NULL, " ");
-
- /* Must be a GET request, abort otherwise */
- if (strcmp_P(RequestToken, PSTR("GET")) != 0)
- {
- uip_abort();
- return;
- }
-
- /* Copy over the requested filename */
- strncpy(AppState->HTTPServer.FileName, &RequestedFileName[1], (sizeof(AppState->HTTPServer.FileName) - 1));
-
- /* Ensure filename is null-terminated */
- AppState->HTTPServer.FileName[sizeof(AppState->HTTPServer.FileName) - 1] = 0x00;
-
- /* Determine the length of the URI so that it can be checked to see if it is a directory */
- uint8_t FileNameLen = strlen(AppState->HTTPServer.FileName);
-
- /* If the URI is a directory, append the default filename */
- if (AppState->HTTPServer.FileName[FileNameLen - 1] == '/')
- {
- strncpy_P(&AppState->HTTPServer.FileName[FileNameLen], DefaultDirFileName,
- (sizeof(AppState->HTTPServer.FileName) - FileNameLen));
-
- /* Ensure altered filename is still null-terminated */
- AppState->HTTPServer.FileName[sizeof(AppState->HTTPServer.FileName) - 1] = 0x00;
- }
-
- /* Try to open the file from the Dataflash disk */
- AppState->HTTPServer.FileOpen = (f_open(&AppState->HTTPServer.FileHandle, AppState->HTTPServer.FileName,
- (FA_OPEN_EXISTING | FA_READ)) == FR_OK);
-
- /* Lock to the SendResponseHeader state until connection terminated */
- AppState->HTTPServer.CurrentState = WEBSERVER_STATE_SendResponseHeader;
- AppState->HTTPServer.NextState = WEBSERVER_STATE_SendResponseHeader;
-}
-
-/** HTTP Server State handler for the HTTP Response Header Send state. This state manages the transmission of
- * the HTTP response header to the receiving HTTP client.
- */
-static void HTTPServerApp_SendResponseHeader(void)
-{
- uip_tcp_appstate_t* const AppState = &uip_conn->appstate;
- char* const AppData = (char*)uip_appdata;
-
- char* Extension = strpbrk(AppState->HTTPServer.FileName, ".");
- bool FoundMIMEType = false;
-
- /* If the file isn't already open, it wasn't found - send back a 404 error response and abort */
- if (!(AppState->HTTPServer.FileOpen))
- {
- /* Copy over the HTTP 404 response header and send it to the receiving client */
- strcpy_P(AppData, HTTP404Header);
- strcpy(&AppData[strlen(AppData)], AppState->HTTPServer.FileName);
- uip_send(AppData, strlen(AppData));
-
- AppState->HTTPServer.NextState = WEBSERVER_STATE_Closing;
- return;
- }
-
- /* Copy over the HTTP 200 response header and send it to the receiving client */
- strcpy_P(AppData, HTTP200Header);
-
- /* Check to see if a MIME type for the requested file's extension was found */
- if (Extension != NULL)
- {
- /* Look through the MIME type list, copy over the required MIME type if found */
- for (uint8_t i = 0; i < (sizeof(MIMETypes) / sizeof(MIMETypes[0])); i++)
- {
- if (strcmp(&Extension[1], MIMETypes[i].Extension) == 0)
- {
- strcpy(&AppData[strlen(AppData)], MIMETypes[i].MIMEType);
- FoundMIMEType = true;
- break;
- }
- }
- }
-
- /* Check if a MIME type was found and copied to the output buffer */
- if (!(FoundMIMEType))
- {
- /* MIME type not found - copy over the default MIME type */
- strcpy_P(&AppData[strlen(AppData)], DefaultMIMEType);
- }
-
- /* Add the end-of-line terminator and end-of-headers terminator after the MIME type */
- strcpy_P(&AppData[strlen(AppData)], PSTR("\r\n\r\n"));
-
- /* Send the MIME header to the receiving client */
- uip_send(AppData, strlen(AppData));
-
- /* When the MIME header is ACKed, progress to the data send stage */
- AppState->HTTPServer.NextState = WEBSERVER_STATE_SendData;
-}
-
-/** HTTP Server State handler for the Data Send state. This state manages the transmission of file chunks
- * to the receiving HTTP client.
- */
-static void HTTPServerApp_SendData(void)
-{
- uip_tcp_appstate_t* const AppState = &uip_conn->appstate;
- char* const AppData = (char*)uip_appdata;
-
- /* Get the maximum segment size for the current packet */
- uint16_t MaxChunkSize = uip_mss();
-
- /* Read the next chunk of data from the open file */
- f_read(&AppState->HTTPServer.FileHandle, AppData, MaxChunkSize, &AppState->HTTPServer.SentChunkSize);
-
- /* Send the next file chunk to the receiving client */
- uip_send(AppData, AppState->HTTPServer.SentChunkSize);
-
- /* Check if we are at the last chunk of the file, if so next ACK should close the connection */
- if (MaxChunkSize != AppState->HTTPServer.SentChunkSize)
- AppState->HTTPServer.NextState = WEBSERVER_STATE_Closing;
-}
+/* + LUFA Library + Copyright (C) Dean Camera, 2010. + + dean [at] fourwalledcubicle [dot] com + www.fourwalledcubicle.com +*/ + +/* + Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com) + + Permission to use, copy, modify, distribute, and sell this + software and its documentation for any purpose is hereby granted + without fee, provided that the above copyright notice appear in + all copies and that both that the copyright notice and this + permission notice and warranty disclaimer appear in supporting + documentation, and that the name of the author not be used in + advertising or publicity pertaining to distribution of the + software without specific, written prior permission. + + The author disclaim all warranties with regard to this + software, including all implied warranties of merchantability + and fitness. In no event shall the author be liable for any + special, indirect or consequential damages or any damages + whatsoever resulting from loss of use, data or profits, whether + in an action of contract, negligence or other tortious action, + arising out of or in connection with the use or performance of + this software. +*/ + +/** \file + * + * Simple HTTP Webserver Application. When connected to the uIP stack, + * this will serve out files to HTTP clients on port 80. + */ + +#define INCLUDE_FROM_HTTPSERVERAPP_C +#include "HTTPServerApp.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 " LUFA_VERSION_STRING "\r\n" + "Connection: close\r\n" + "MIME-version: 1.0\r\n" + "Content-Type: "; + +/** 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 " LUFA_VERSION_STRING "\r\n" + "Connection: close\r\n" + "MIME-version: 1.0\r\n" + "Content-Type: text/plain\r\n\r\n" + "Error 404: File Not Found: /"; + +/** Default filename to fetch when a directory is requested */ +const char PROGMEM DefaultDirFileName[] = "index.htm"; + +/** Default MIME type sent if no other MIME type can be determined. */ +const char PROGMEM DefaultMIMEType[] = "text/plain"; + +/** List of MIME types for each supported file extension. */ +const MIME_Type_t MIMETypes[] = + { + {.Extension = "htm", .MIMEType = "text/html"}, + {.Extension = "jpg", .MIMEType = "image/jpeg"}, + {.Extension = "gif", .MIMEType = "image/gif"}, + {.Extension = "bmp", .MIMEType = "image/bmp"}, + {.Extension = "png", .MIMEType = "image/png"}, + {.Extension = "ico", .MIMEType = "image/x-icon"}, + {.Extension = "exe", .MIMEType = "application/octet-stream"}, + {.Extension = "gz", .MIMEType = "application/x-gzip"}, + {.Extension = "zip", .MIMEType = "application/zip"}, + {.Extension = "pdf", .MIMEType = "application/pdf"}, + }; + +/** FATFs structure to hold the internal state of the FAT driver for the dataflash contents. */ +FATFS DiskFATState; + + +/** Initialization function for the simple HTTP webserver. */ +void HTTPServerApp_Init(void) +{ + /* Listen on port 80 for HTTP connections from hosts */ + uip_listen(HTONS(HTTP_SERVER_PORT)); + + /* Mount the dataflash disk via FatFS */ + f_mount(0, &DiskFATState); +} + +/** uIP stack application callback for the simple HTTP webserver. This function must be called each time the + * TCP/IP stack needs a TCP packet to be processed. + */ +void HTTPServerApp_Callback(void) +{ + uip_tcp_appstate_t* const AppState = &uip_conn->appstate; + + if (uip_aborted() || uip_timedout() || uip_closed()) + { + /* Lock to the closed state so that no further processing will occur on the connection */ + AppState->HTTPServer.CurrentState = WEBSERVER_STATE_Closing; + AppState->HTTPServer.NextState = WEBSERVER_STATE_Closing; + } + + if (uip_connected()) + { + /* New connection - initialize connection state values */ + AppState->HTTPServer.CurrentState = WEBSERVER_STATE_OpenRequestedFile; + AppState->HTTPServer.NextState = WEBSERVER_STATE_OpenRequestedFile; + AppState->HTTPServer.FileOpen = false; + AppState->HTTPServer.ACKedFilePos = 0; + AppState->HTTPServer.SentChunkSize = 0; + } + + if (uip_acked()) + { + /* Add the amount of ACKed file data to the total sent file bytes counter */ + AppState->HTTPServer.ACKedFilePos += AppState->HTTPServer.SentChunkSize; + + /* Progress to the next state once the current state's data has been ACKed */ + AppState->HTTPServer.CurrentState = AppState->HTTPServer.NextState; + } + + if (uip_rexmit()) + { + /* Return file pointer to the last ACKed position */ + f_lseek(&AppState->HTTPServer.FileHandle, AppState->HTTPServer.ACKedFilePos); + } + + if (uip_rexmit() || uip_acked() || uip_newdata() || uip_connected() || uip_poll()) + { + switch (AppState->HTTPServer.CurrentState) + { + case WEBSERVER_STATE_OpenRequestedFile: + HTTPServerApp_OpenRequestedFile(); + break; + case WEBSERVER_STATE_SendResponseHeader: + HTTPServerApp_SendResponseHeader(); + break; + case WEBSERVER_STATE_SendData: + HTTPServerApp_SendData(); + break; + case WEBSERVER_STATE_Closing: + /* Connection is being terminated for some reason - close file handle */ + f_close(&AppState->HTTPServer.FileHandle); + AppState->HTTPServer.FileOpen = false; + + /* If connection is not already closed, close it */ + uip_close(); + + AppState->HTTPServer.CurrentState = WEBSERVER_STATE_Closed; + AppState->HTTPServer.NextState = WEBSERVER_STATE_Closed; + break; + } + } +} + +/** HTTP Server State handler for the Request Process state. This state manages the processing of incoming HTTP + * GET requests to the server from the receiving HTTP client. + */ +static void HTTPServerApp_OpenRequestedFile(void) +{ + uip_tcp_appstate_t* const AppState = &uip_conn->appstate; + char* const AppData = (char*)uip_appdata; + + /* No HTTP header received from the client, abort processing */ + if (!(uip_newdata())) + return; + + char* RequestToken = strtok(AppData, " "); + char* RequestedFileName = strtok(NULL, " "); + + /* Must be a GET request, abort otherwise */ + if (strcmp_P(RequestToken, PSTR("GET")) != 0) + { + uip_abort(); + return; + } + + /* Copy over the requested filename */ + strncpy(AppState->HTTPServer.FileName, &RequestedFileName[1], (sizeof(AppState->HTTPServer.FileName) - 1)); + + /* Ensure filename is null-terminated */ + AppState->HTTPServer.FileName[sizeof(AppState->HTTPServer.FileName) - 1] = 0x00; + + /* Determine the length of the URI so that it can be checked to see if it is a directory */ + uint8_t FileNameLen = strlen(AppState->HTTPServer.FileName); + + /* If the URI is a directory, append the default filename */ + if (AppState->HTTPServer.FileName[FileNameLen - 1] == '/') + { + strncpy_P(&AppState->HTTPServer.FileName[FileNameLen], DefaultDirFileName, + (sizeof(AppState->HTTPServer.FileName) - FileNameLen)); + + /* Ensure altered filename is still null-terminated */ + AppState->HTTPServer.FileName[sizeof(AppState->HTTPServer.FileName) - 1] = 0x00; + } + + /* Try to open the file from the Dataflash disk */ + AppState->HTTPServer.FileOpen = (f_open(&AppState->HTTPServer.FileHandle, AppState->HTTPServer.FileName, + (FA_OPEN_EXISTING | FA_READ)) == FR_OK); + + /* Lock to the SendResponseHeader state until connection terminated */ + AppState->HTTPServer.CurrentState = WEBSERVER_STATE_SendResponseHeader; + AppState->HTTPServer.NextState = WEBSERVER_STATE_SendResponseHeader; +} + +/** HTTP Server State handler for the HTTP Response Header Send state. This state manages the transmission of + * the HTTP response header to the receiving HTTP client. + */ +static void HTTPServerApp_SendResponseHeader(void) +{ + uip_tcp_appstate_t* const AppState = &uip_conn->appstate; + char* const AppData = (char*)uip_appdata; + + char* Extension = strpbrk(AppState->HTTPServer.FileName, "."); + bool FoundMIMEType = false; + + /* If the file isn't already open, it wasn't found - send back a 404 error response and abort */ + if (!(AppState->HTTPServer.FileOpen)) + { + /* Copy over the HTTP 404 response header and send it to the receiving client */ + strcpy_P(AppData, HTTP404Header); + strcpy(&AppData[strlen(AppData)], AppState->HTTPServer.FileName); + uip_send(AppData, strlen(AppData)); + + AppState->HTTPServer.NextState = WEBSERVER_STATE_Closing; + return; + } + + /* Copy over the HTTP 200 response header and send it to the receiving client */ + strcpy_P(AppData, HTTP200Header); + + /* Check to see if a MIME type for the requested file's extension was found */ + if (Extension != NULL) + { + /* Look through the MIME type list, copy over the required MIME type if found */ + for (uint8_t i = 0; i < (sizeof(MIMETypes) / sizeof(MIMETypes[0])); i++) + { + if (strcmp(&Extension[1], MIMETypes[i].Extension) == 0) + { + strcpy(&AppData[strlen(AppData)], MIMETypes[i].MIMEType); + FoundMIMEType = true; + break; + } + } + } + + /* Check if a MIME type was found and copied to the output buffer */ + if (!(FoundMIMEType)) + { + /* MIME type not found - copy over the default MIME type */ + strcpy_P(&AppData[strlen(AppData)], DefaultMIMEType); + } + + /* Add the end-of-line terminator and end-of-headers terminator after the MIME type */ + strcpy_P(&AppData[strlen(AppData)], PSTR("\r\n\r\n")); + + /* Send the MIME header to the receiving client */ + uip_send(AppData, strlen(AppData)); + + /* When the MIME header is ACKed, progress to the data send stage */ + AppState->HTTPServer.NextState = WEBSERVER_STATE_SendData; +} + +/** HTTP Server State handler for the Data Send state. This state manages the transmission of file chunks + * to the receiving HTTP client. + */ +static void HTTPServerApp_SendData(void) +{ + uip_tcp_appstate_t* const AppState = &uip_conn->appstate; + char* const AppData = (char*)uip_appdata; + + /* Get the maximum segment size for the current packet */ + uint16_t MaxChunkSize = uip_mss(); + + /* Read the next chunk of data from the open file */ + f_read(&AppState->HTTPServer.FileHandle, AppData, MaxChunkSize, &AppState->HTTPServer.SentChunkSize); + + /* Send the next file chunk to the receiving client */ + uip_send(AppData, AppState->HTTPServer.SentChunkSize); + + /* Check if we are at the last chunk of the file, if so next ACK should close the connection */ + if (MaxChunkSize != AppState->HTTPServer.SentChunkSize) + AppState->HTTPServer.NextState = WEBSERVER_STATE_Closing; +} |