A simple web server mainly based on ideas from Jasper Schuurmans Netduino web server
Dependents: RdBlindsServer SpideyWallWeb RdGasUseMonitor
A fast and reliable web server for MBED! http://robdobson.com/2015/08/a-reliable-mbed-webserver/
It has a very neat way to implement REST commands and can serve files from local storage (on LPC1768 for instance) and from SD cards. It also has a caching facility which is particularly useful for serving files from local storage.
The server can be run in the main() thread (and has a sub-2ms response time if this is done) or in a mbed-rtos thread which increases the response time to (a still respectable) 30ms or so.
The latest project that uses this is here - https://developer.mbed.org/users/Bobty/code/SpideyWallWeb/
int main (void) { // Ethernet interface EthernetInterface::init(); // Connect ethernet EthernetInterface::connect(); // Init the web server pc.printf("Starting web server\r\n"); char* baseWebFolder = "/sd/"; // should be /sd/ for SDcard files - not used for local file system RdWebServer webServer; // Add commands to handle the home page and favicon webServer.addCommand("", RdWebServerCmdDef::CMD_LOCALFILE, NULL, "index.htm", true); webServer.addCommand("favicon.ico", RdWebServerCmdDef::CMD_LOCALFILE, NULL, NULL, true); // Add the lightwall control commands webServer.addCommand("name", RdWebServerCmdDef::CMD_CALLBACK, &lightwallGetSystemName); webServer.addCommand("clear", RdWebServerCmdDef::CMD_CALLBACK, &lightwallClear); webServer.addCommand("rawfill", RdWebServerCmdDef::CMD_CALLBACK, &lightwallRawFill); webServer.addCommand("fill", RdWebServerCmdDef::CMD_CALLBACK, &lightwallFill); webServer.addCommand("showleds", RdWebServerCmdDef::CMD_CALLBACK, &lightwallShowLeds); // Start the server webServer.init(WEBPORT, &led4, baseWebFolder); webServer.run(); } // Get system name - No arguments required char* lightwallGetSystemName(int method, char*cmdStr, char* argStr, char* msgBuffer, int msgLen, int contentLen, unsigned char* pPayload, int payloadLen, int splitPayloadPos) { // Perform any required actions here .... // ... // Return the system name return systemName; }
This server was originally based on a Netduino web server from Jasper Schuurmans but has been optimised for speed.
Diff: RdWebServer.cpp
- Revision:
- 6:46285c519af2
- Parent:
- 5:e6286b529d6b
- Child:
- 7:fe7c33f7fbb8
--- a/RdWebServer.cpp Tue Feb 03 12:08:12 2015 +0000 +++ b/RdWebServer.cpp Fri Feb 06 14:17:47 2015 +0000 @@ -9,57 +9,6 @@ #define MAX_CMDSTR_LEN 100 #define MAX_ARGSTR_LEN 100 -bool RdFileCacheEntry::readLocalFileIntoCache(char* fileName) -{ - printf("Reading into cache %s\n\r", fileName); - LocalFileSystem local("local"); - FILE* fp = fopen(fileName, "r"); - if (fp == NULL) - { - printf("Failed to open file\n\r"); - return false; - } - printf("Seeking\n\r"); - fseek(fp, 0, SEEK_END); - _nFileLen = (int)ftell(fp); - _pFileContent = new char[_nFileLen]; - printf("Len %d Buf %08x\n\r", _nFileLen, _pFileContent); - if (!_pFileContent) - { - printf("Failed to allocate %lu\n\r", _nFileLen); - fclose(fp); - return false; - } - printf("Allocated\n\r"); - memset(_pFileContent, 0, _nFileLen); - fseek(fp, 0, SEEK_SET); - char* pMem = _pFileContent; - char fileBuf[100]; - int totCnt = 0; - int rdCnt = 0; - printf("Reading\n\r"); - while (true) - { - int toRead = _nFileLen - totCnt; - if (toRead > sizeof(fileBuf)) - toRead = sizeof(fileBuf); - if (toRead <= 0) - break; - rdCnt = fread(fileBuf, sizeof(char), toRead, fp); - if (rdCnt <= 0) - break; - printf("Read %d tot %d of %d\n\r", rdCnt, totCnt, _nFileLen); - memcpy(pMem, fileBuf, rdCnt); - pMem += rdCnt; - totCnt += rdCnt; - } - printf("Done read\n\r"); - fclose(fp); - printf("Success in caching %d bytes (read %d)\n\r", _nFileLen, totCnt); - _bCacheValid = true; - return true; -} - RdWebServer::RdWebServer() { _serverIsListening = false; @@ -79,31 +28,468 @@ _pStatusLed = pStatusLed; _pBaseWebFolder = pBaseWebFolder; -// _socketSrv.set_blocking(true); - + _socketSrv.set_blocking(true); //setup tcp socket if(_socketSrv.bind(port)< 0) { - printf("TCP server bind fail\n\r"); + pc.printf("TCP server bind fail\n\r"); return false; } else { -// printf("TCP server bind success\n\r"); +// pc.printf("TCP server bind success\n\r"); _serverIsListening = true; } if(_socketSrv.listen(1) < 0) { - printf("TCP server listen fail\n\r"); + pc.printf("TCP server listen fail\n\r"); return false; } else { - printf("TCP server is listening...\r\n"); + pc.printf("TCP server is listening...\r\n"); + } + + return true; +} + +void RdWebServer::handleReceivedHttp(TCPSocketConnection &client) +{ + pc.printf("Received Data: %d\n\r\n\r%.*s\n\r",strlen(_buffer),strlen(_buffer),_buffer); + if (strncmp(_buffer, "GET ", 4) == 0) + { + pc.printf("GET request\n\r"); + char cmdStr[MAX_CMDSTR_LEN]; + char argStr[MAX_ARGSTR_LEN]; + if (extractCmdArgs(_buffer+3, cmdStr, MAX_CMDSTR_LEN, argStr, MAX_ARGSTR_LEN)) + { + pc.printf("CmdStr %s\n\r", cmdStr); + pc.printf("ArgStr %s\n\r", argStr); + bool cmdFound = false; + for (std::vector<RdWebServerCmdDef*>::iterator it = _commands.begin() ; it != _commands.end(); ++it) + { + // pc.printf("Testing <<%s>> with <<%s>>\r\n", (*it)->_pCmdStr, cmdStr); + if (strcasecmp((*it)->_pCmdStr, cmdStr) == 0) + { + pc.printf("FoundCmd <%s> Type %d\n\r", cmdStr, (*it)->_cmdType); + cmdFound = true; + if ((*it)->_cmdType == RdWebServerCmdDef::CMD_CALLBACK) + { + char* respStr = ((*it)->_callback)(cmdStr, argStr); + client.send(respStr, strlen(respStr)); + } + else if ((*it)->_cmdType == RdWebServerCmdDef::CMD_LOCALFILE) + { + if ((*it)->_substFileName[0] != '\0') + handleLocalFileRequest((*it)->_substFileName, argStr, client, _httpHeader, (*it)->_bCacheIfPossible); + else + handleLocalFileRequest(cmdStr, argStr, client, _httpHeader, (*it)->_bCacheIfPossible); + } + else if ((*it)->_cmdType == RdWebServerCmdDef::CMD_SDORUSBFILE) + { + if ((*it)->_substFileName[0] != '\0') + handleSDFileRequest((*it)->_substFileName, argStr, client, _httpHeader); + else + handleSDFileRequest(cmdStr, argStr, client, _httpHeader); + } + break; + } + } + // If command not found see if it is a local file + if (!cmdFound) + handleSDFileRequest(cmdStr, argStr, client, _httpHeader); + } + } +} + +void RdWebServer::run() +{ + + while (1) + { + TCPSocketConnection client; + pc.printf("Waiting for TCP connection\r\n"); + if(_socketSrv.accept(client)<0) + { + pc.printf("TCP Socket failed to accept connection\n\r"); + } + else + { + pc.printf("Connection from IP: %s\n\r",client.get_address()); + if (_pStatusLed != NULL) + *_pStatusLed = true; + + // Get received data + int rxLen = client.receive(_buffer, HTTPD_MAX_REQ_LENGTH); + if (rxLen == -1) + { + continue; + } + else if (rxLen == 0) + { + pc.printf("received buffer is empty.\n\r"); + continue; + } + else if (rxLen > HTTPD_MAX_REQ_LENGTH) + { + sprintf(_httpHeader,"HTTP/1.1 413 Request Entity Too Large \r\nContent-Type: text\r\nConnection: Close\r\n\r\n"); + client.send(_httpHeader,strlen(_httpHeader)); + client.send(_buffer, rxLen); + continue; + } + _buffer[rxLen] = '\0'; + + // Handle buffer + handleReceivedHttp(client); +// const char * msg = "Hello World\n\r\n\r"; +// sprintf(_buffer,"HTTP/1.1 200 OK\n\rContent-Length: %d\n\rContent-Type: text/html\n\rConnection: Close\n\r\n\r", strlen(msg)); +// client.send(_buffer,strlen(_buffer)); +// client.send( const_cast<char*>(msg), strlen(msg)); + } } +// while (1) +// { +// TCPSocketConnection Clnt; +// printf("Accept\n"); +// int ret = _socketSrv.accept(Clnt); +// if ( ret < 0) { +// printf("no connection\n"); +// } else { +// printf("Client (IP=%s) is connected\n", Clnt.get_address()); +// char buff[512]; +// int result = Clnt.receive(buff, 511); +// if(result < 0 ) +// printf("The horror\n "); +// else { +// if(result >= 511) +// buff[511] = 0; +// else +// buff[result + 1] = 0; +// +// printf("%s\n",buff); +// } +// const char * msg = "Hello World\n\r\n\r"; +// sprintf(buff,"HTTP/1.1 200 OK\n\rContent-Length: %d\n\rContent-Type: text/html\n\rConnection: Close\n\r\n\r", strlen(msg)); +// Clnt.send(buff,strlen(buff)); +// Clnt.send( const_cast<char*>(msg), strlen(msg)); +// } +// } +// +// //listening for http GET request +// while (isListening()) +// { +// //blocking mode(never timeout) +// if(_socketSrv.accept(client)<0) +// { +// pc.printf("TCP Socket failed to accept connection\n\r"); +// } +// else +// { +// client.set_blocking(false, 1000); +// pc.printf("Connection from IP: %s\n\r",client.get_address()); +// if (_pStatusLed != NULL) +// *_pStatusLed = true; +// Timer connectLimitTimer; +// connectLimitTimer.start(); +// +// while(connectLimitTimer.read() < 5) // 5 seconds timeout on HTTP operation +// { +// int rxLen = client.receive(buffer, 1023); +// if (rxLen == -1) +// { +// continue; +// } +// else if (rxLen == 0) +// { +// pc.printf("received buffer is empty.\n\r"); +// break; +// } +// else if (rxLen >= 1024) +// { +// sprintf(httpHeader,"HTTP/1.1 413 Request Entity Too Large \r\nContent-Type: text\r\nConnection: Close\r\n\r\n"); +// client.send(httpHeader,strlen(httpHeader)); +// client.send(buffer, rxLen); +// break; +// } +// buffer[rxLen] = '\0'; +//// pc.printf("Received Data: %d\n\r\n\r%.*s\n\r",strlen(buffer),strlen(buffer),buffer); +// if (strncmp(buffer, "GET ", 4) == 0) +// { +//// pc.printf("GET request\n\r"); +// char cmdStr[MAX_CMDSTR_LEN]; +// char argStr[MAX_ARGSTR_LEN]; +// if (extractCmdArgs(buffer+3, cmdStr, MAX_CMDSTR_LEN, argStr, MAX_ARGSTR_LEN)) +// { +// pc.printf("CmdStr %s\n\r", cmdStr); +// pc.printf("ArgStr %s\n\r", argStr); +// bool cmdFound = false; +// for (std::vector<RdWebServerCmdDef*>::iterator it = _commands.begin() ; it != _commands.end(); ++it) +// { +//// pc.printf("Testing <<%s>> with <<%s>>\r\n", (*it)->_pCmdStr, cmdStr); +// if (strcasecmp((*it)->_pCmdStr, cmdStr) == 0) +// { +// pc.printf("FoundCmd <%s> Type %d\n\r", cmdStr, (*it)->_cmdType); +// cmdFound = true; +// if ((*it)->_cmdType == RdWebServerCmdDef::CMD_CALLBACK) +// { +// char* respStr = ((*it)->_callback)(cmdStr, argStr); +// client.send(respStr, strlen(respStr)); +// } +// else if ((*it)->_cmdType == RdWebServerCmdDef::CMD_LOCALFILE) +// { +// if ((*it)->_substFileName[0] != '\0') +// handleLocalFileRequest((*it)->_substFileName, argStr, &client, httpHeader, (*it)->_bCacheIfPossible); +// else +// handleLocalFileRequest(cmdStr, argStr, &client, httpHeader, (*it)->_bCacheIfPossible); +// } +// else if ((*it)->_cmdType == RdWebServerCmdDef::CMD_SDORUSBFILE) +// { +// if ((*it)->_substFileName[0] != '\0') +// handleSDFileRequest((*it)->_substFileName, argStr, &client, httpHeader); +// else +// handleSDFileRequest(cmdStr, argStr, &client, httpHeader); +// } +// break; +// } +// } +// // If command not found see if it is a local file +// if (!cmdFound) +// handleLocalFileRequest(cmdStr, argStr, &client, httpHeader, false); +// } +// +// break; +// } +// +// } +// pc.printf("Connection closed ... TCP server is listening...\r\n"); +// client.close(); +// if (_pStatusLed != NULL) +// *_pStatusLed = false; +// } +// } +} + +void RdWebServer::addCommand(char* pCmdStr, int cmdType, CmdCallbackType callback, char* substFileName, bool cacheIfPossible) +{ + _commands.push_back(new RdWebServerCmdDef(pCmdStr, cmdType, callback, substFileName, cacheIfPossible)); +} + +void RdWebServer::handleSDFileRequest(char* inFileName, char* argStr, TCPSocketConnection &client, char* httpHeader) +{ + const int HTTPD_MAX_FNAME_LENGTH = 127; + char filename[HTTPD_MAX_FNAME_LENGTH+1]; + + pc.printf("Requesting file %s\n\r", inFileName); + + char *lstchr = strrchr(inFileName, NULL) -1; + if ('/' == *lstchr) + { + pc.printf("Request file %s%s\n", _pBaseWebFolder, inFileName); + *lstchr = 0; + sprintf(filename, "%s%s", _pBaseWebFolder, inFileName); + DIR *d = opendir(filename); + if (d != NULL) { + sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n"); + client.send(httpHeader,strlen(httpHeader)); + sprintf(httpHeader,"<html><head><title>Directory Listing</title></head><body><h1>%s</h1><ul>", inFileName); + client.send(httpHeader,strlen(httpHeader)); + struct dirent *p; + while((p = readdir(d)) != NULL) { + pc.printf("%s\n", p->d_name); + sprintf(httpHeader,"<li>%s</li>", p->d_name); + client.send(httpHeader,strlen(httpHeader)); + } + } + closedir(d); + // pc.printf("Directory closed\n"); + sprintf(httpHeader,"</ul></body></html>"); + client.send(httpHeader,strlen(httpHeader)); + } + else + { + sprintf(filename, "%s%s", _pBaseWebFolder, inFileName); + pc.printf ("Filename %s\r\n", filename); + + FILE* fp = fopen(filename, "r"); + if (fp == NULL) + { + pc.printf ("Filename %s not found\r\n", filename); + sprintf(httpHeader,"HTTP/1.1 404 Not Found \r\nContent-Type: text\r\nConnection: Close\r\n\r\n"); + client.send(httpHeader,strlen(httpHeader)); + client.send(inFileName,strlen(inFileName)); + } + else + { + pc.printf ("Sending file %s\r\n", filename); + sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n"); + client.send(httpHeader,strlen(httpHeader)); + int rdCnt = 0; + char fileBuf[1024]; + while ((rdCnt = fread(fileBuf, sizeof( char ), 1024, fp)) == 1024) + { + client.send(fileBuf, rdCnt); + } + client.send(fileBuf, rdCnt); + fclose(fp); + } + } +// FILE* fp = fopen("/sd/index.htm", "r"); +// if (fp == NULL) +// { +// pc.printf ("Filename %s not found\r\n", inFileName); +// } +// else +// { +// pc.printf ("Sending file %s\r\n", inFileName); +// fclose(fp); +// } + +// const char * msg = "Hello World\n\r\n\r"; +// sprintf(_buffer,"HTTP/1.1 200 OK\n\rContent-Length: %d\n\rContent-Type: text/html\n\rConnection: Close\n\r\n\r", strlen(msg)); +// client.send(_buffer,strlen(_buffer)); +// client.send( const_cast<char*>(msg), strlen(msg)); +} + +void RdWebServer::sendFromCache(RdFileCacheEntry* pCacheEntry, TCPSocketConnection &client, char* httpHeader) +{ + pc.printf ("Sending file %s from cache %d bytes\r\n", pCacheEntry->_fileName, pCacheEntry->_nFileLen); + sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n"); + client.send(httpHeader,strlen(httpHeader)); + char* pMem = pCacheEntry->_pFileContent; + int nLenLeft = pCacheEntry->_nFileLen; + int blkSize = 2048; + while(nLenLeft > 0) + { + if (blkSize > nLenLeft) + blkSize = nLenLeft; + client.send_all(pMem, blkSize); + pMem += blkSize; + nLenLeft -= blkSize; + } +} + +void RdWebServer::handleLocalFileRequest(char* inFileName, char* argStr, TCPSocketConnection &client, char* httpHeader, bool bCacheIfPossible) +{ + const int HTTPD_MAX_FNAME_LENGTH = 127; + char localFilename[HTTPD_MAX_FNAME_LENGTH+1]; + char reqFileNameStr[HTTPD_MAX_FNAME_LENGTH+1]; + + pc.printf("Requesting local file %s\n\r", inFileName); + sprintf(reqFileNameStr, "/%s", inFileName); + sprintf(localFilename, "/local/%s", inFileName); + + if (bCacheIfPossible) + { + // Check if file already cached + bool bTryToCache = true; + for (std::vector<RdFileCacheEntry*>::iterator it = _cachedFiles.begin() ; it != _cachedFiles.end(); ++it) + { + if (strcmp(inFileName, (*it)->_fileName) == 0) + { + if ((*it)->_bCacheValid) + { + sendFromCache(*it, client, httpHeader); + return; + } + bTryToCache = false; // don't try to cache as cacheing must have already failed + } + } + + // See if we can cache the file + if (bTryToCache) + { + RdFileCacheEntry* pCacheEntry = new RdFileCacheEntry(inFileName); + if (pCacheEntry) + { + bool bCacheSuccess = pCacheEntry->readLocalFileIntoCache(localFilename); + // Store the cache entry even if reading failed (mem alloc or file not found, etc) so we don't try to cache again + _cachedFiles.push_back(pCacheEntry); + if (bCacheSuccess) + { + sendFromCache(pCacheEntry, client, httpHeader); + return; + } + } + } + } + + LocalFileSystem local("local"); + + FILE* fp = fopen(localFilename, "r"); + if (fp == NULL) + { + pc.printf ("Local file %s not found\r\n", localFilename); + sprintf(httpHeader,"HTTP/1.1 404 Not Found \r\nContent-Type: text\r\nConnection: Close\r\n\r\n"); + client.send(httpHeader,strlen(httpHeader)); + client.send(reqFileNameStr,strlen(reqFileNameStr)); + } + else + { + pc.printf ("Sending file %s from disk\r\n", localFilename); + sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n"); + client.send(httpHeader,strlen(httpHeader)); + int rdCnt = 0; + char fileBuf[2000]; + while ((rdCnt = fread(fileBuf, sizeof( char ), 2000, fp)) == 2000) + { + client.send_all(fileBuf, rdCnt); + } + client.send_all(fileBuf, rdCnt); + fclose(fp); + } +} + +bool RdFileCacheEntry::readLocalFileIntoCache(char* fileName) +{ + pc.printf("Reading into cache %s\n\r", fileName); + LocalFileSystem local("local"); + FILE* fp = fopen(fileName, "r"); + if (fp == NULL) + { + pc.printf("Failed to open file\n\r"); + return false; + } + pc.printf("Seeking\n\r"); + fseek(fp, 0, SEEK_END); + _nFileLen = (int)ftell(fp); + _pFileContent = new char[_nFileLen]; + pc.printf("Len %d Buf %08x\n\r", _nFileLen, _pFileContent); + if (!_pFileContent) + { + pc.printf("Failed to allocate %lu\n\r", _nFileLen); + fclose(fp); + return false; + } + pc.printf("Allocated\n\r"); + memset(_pFileContent, 0, _nFileLen); + fseek(fp, 0, SEEK_SET); + char* pMem = _pFileContent; + char fileBuf[100]; + int totCnt = 0; + int rdCnt = 0; + pc.printf("Reading\n\r"); + while (true) + { + int toRead = _nFileLen - totCnt; + if (toRead > sizeof(fileBuf)) + toRead = sizeof(fileBuf); + if (toRead <= 0) + break; + rdCnt = fread(fileBuf, sizeof(char), toRead, fp); + if (rdCnt <= 0) + break; + pc.printf("Read %d tot %d of %d\n\r", rdCnt, totCnt, _nFileLen); + memcpy(pMem, fileBuf, rdCnt); + pMem += rdCnt; + totCnt += rdCnt; + } + pc.printf("Done read\n\r"); + fclose(fp); + pc.printf("Success in caching %d bytes (read %d)\n\r", _nFileLen, totCnt); + _bCacheValid = true; return true; } @@ -144,259 +530,3 @@ } return true; } - -void RdWebServer::sendFromCache(RdFileCacheEntry* pCacheEntry, TCPSocketConnection* pClient, char* httpHeader) -{ - printf ("Sending file %s from cache %d bytes\r\n", pCacheEntry->_fileName, pCacheEntry->_nFileLen); - sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n"); - pClient->send(httpHeader,strlen(httpHeader)); - char* pMem = pCacheEntry->_pFileContent; - int nLenLeft = pCacheEntry->_nFileLen; - int blkSize = 2048; - while(nLenLeft > 0) - { - if (blkSize > nLenLeft) - blkSize = nLenLeft; - pClient->send_all(pMem, blkSize); - pMem += blkSize; - nLenLeft -= blkSize; - } -} - -void RdWebServer::handleLocalFileRequest(char* inFileName, char* argStr, TCPSocketConnection* pClient, char* httpHeader, bool bCacheIfPossible) -{ - const int HTTPD_MAX_FNAME_LENGTH = 127; - char localFilename[HTTPD_MAX_FNAME_LENGTH+1]; - char reqFileNameStr[HTTPD_MAX_FNAME_LENGTH+1]; - - printf("Requesting local file %s\n\r", inFileName); - sprintf(reqFileNameStr, "/%s", inFileName); - sprintf(localFilename, "/local/%s", inFileName); - - if (bCacheIfPossible) - { - // Check if file already cached - bool bTryToCache = true; - for (std::vector<RdFileCacheEntry*>::iterator it = _cachedFiles.begin() ; it != _cachedFiles.end(); ++it) - { - if (strcmp(inFileName, (*it)->_fileName) == 0) - { - if ((*it)->_bCacheValid) - { - sendFromCache(*it, pClient, httpHeader); - return; - } - bTryToCache = false; // don't try to cache as cacheing must have already failed - } - } - - // See if we can cache the file - if (bTryToCache) - { - RdFileCacheEntry* pCacheEntry = new RdFileCacheEntry(inFileName); - if (pCacheEntry) - { - bool bCacheSuccess = pCacheEntry->readLocalFileIntoCache(localFilename); - // Store the cache entry even if reading failed (mem alloc or file not found, etc) so we don't try to cache again - _cachedFiles.push_back(pCacheEntry); - if (bCacheSuccess) - { - sendFromCache(pCacheEntry, pClient, httpHeader); - return; - } - } - } - } - - LocalFileSystem local("local"); - - FILE* fp = fopen(localFilename, "r"); - if (fp == NULL) - { - printf ("Local file %s not found\r\n", localFilename); - sprintf(httpHeader,"HTTP/1.1 404 Not Found \r\nContent-Type: text\r\nConnection: Close\r\n\r\n"); - pClient->send(httpHeader,strlen(httpHeader)); - pClient->send(reqFileNameStr,strlen(reqFileNameStr)); - } - else - { - printf ("Sending file %s from disk\r\n", localFilename); - sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n"); - pClient->send(httpHeader,strlen(httpHeader)); - int rdCnt = 0; - char fileBuf[2000]; - while ((rdCnt = fread(fileBuf, sizeof( char ), 2000, fp)) == 2000) - { - pClient->send_all(fileBuf, rdCnt); - } - pClient->send_all(fileBuf, rdCnt); - fclose(fp); - } -} - -void RdWebServer::handleSDFileRequest(char* inFileName, char* argStr, TCPSocketConnection* pClient, char* httpHeader) -{ - const int HTTPD_MAX_FNAME_LENGTH = 127; - char filename[HTTPD_MAX_FNAME_LENGTH+1]; - - printf("Requesting file %s\n\r", inFileName); - - char *lstchr = strrchr(inFileName, NULL) -1; - if ('/' == *lstchr) - { - printf("Request file %s%s\n", _pBaseWebFolder, inFileName); - *lstchr = 0; - sprintf(filename, "%s%s", _pBaseWebFolder, inFileName); - DIR *d = opendir(filename); - if (d != NULL) { - sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n"); - pClient->send(httpHeader,strlen(httpHeader)); - sprintf(httpHeader,"<html><head><title>Directory Listing</title></head><body><h1>%s</h1><ul>", inFileName); - pClient->send(httpHeader,strlen(httpHeader)); - struct dirent *p; - while((p = readdir(d)) != NULL) { - printf("%s\n", p->d_name); - sprintf(httpHeader,"<li>%s</li>", p->d_name); - pClient->send(httpHeader,strlen(httpHeader)); - } - } - closedir(d); - // printf("Directory closed\n"); - sprintf(httpHeader,"</ul></body></html>"); - pClient->send(httpHeader,strlen(httpHeader)); - } - else - { - sprintf(filename, "%s%s", _pBaseWebFolder, inFileName); - printf ("Filename %s\r\n", filename); - FILE* fp = fopen(filename, "r"); - if (fp == NULL) - { - printf ("Filename %s not found\r\n", filename); - sprintf(httpHeader,"HTTP/1.1 404 Not Found \r\nContent-Type: text\r\nConnection: Close\r\n\r\n"); - pClient->send(httpHeader,strlen(httpHeader)); - pClient->send(inFileName,strlen(inFileName)); - } - else - { - printf ("Sending file %s\r\n", filename); - sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n"); - pClient->send(httpHeader,strlen(httpHeader)); - int rdCnt = 0; - char fileBuf[1024]; - while ((rdCnt = fread(fileBuf, sizeof( char ), 1024, fp)) == 1024) - { - pClient->send(fileBuf, rdCnt); - } - pClient->send(fileBuf, rdCnt); - fclose(fp); - } - } -} - -void RdWebServer::run() -{ - TCPSocketConnection client; - const int HTTPD_MAX_HDR_LENGTH = 255; - char httpHeader[HTTPD_MAX_HDR_LENGTH+1]; - const int HTTPD_MAX_REQ_LENGTH = 1023; - char buffer[HTTPD_MAX_REQ_LENGTH+1]; - - //listening for http GET request - while (isListening()) - { - //blocking mode(never timeout) - if(_socketSrv.accept(client)<0) - { - printf("TCP Socket failed to accept connection\n\r"); - } - else - { - client.set_blocking(false, 1000); - printf("Connection from IP: %s\n\r",client.get_address()); - if (_pStatusLed != NULL) - *_pStatusLed = true; - Timer connectLimitTimer; - connectLimitTimer.start(); - - while(connectLimitTimer.read() < 5) // 5 seconds timeout on HTTP operation - { - int rxLen = client.receive(buffer, 1023); - if (rxLen == -1) - { - continue; - } - else if (rxLen == 0) - { - printf("received buffer is empty.\n\r"); - break; - } - else if (rxLen >= 1024) - { - sprintf(httpHeader,"HTTP/1.1 413 Request Entity Too Large \r\nContent-Type: text\r\nConnection: Close\r\n\r\n"); - client.send(httpHeader,strlen(httpHeader)); - client.send(buffer, rxLen); - break; - } - buffer[rxLen] = '\0'; -// printf("Received Data: %d\n\r\n\r%.*s\n\r",strlen(buffer),strlen(buffer),buffer); - if (strncmp(buffer, "GET ", 4) == 0) - { -// printf("GET request\n\r"); - char cmdStr[MAX_CMDSTR_LEN]; - char argStr[MAX_ARGSTR_LEN]; - if (extractCmdArgs(buffer+3, cmdStr, MAX_CMDSTR_LEN, argStr, MAX_ARGSTR_LEN)) - { - printf("CmdStr %s\n\r", cmdStr); - printf("ArgStr %s\n\r", argStr); - bool cmdFound = false; - for (std::vector<RdWebServerCmdDef*>::iterator it = _commands.begin() ; it != _commands.end(); ++it) - { -// printf("Testing <<%s>> with <<%s>>\r\n", (*it)->_pCmdStr, cmdStr); - if (strcasecmp((*it)->_pCmdStr, cmdStr) == 0) - { - printf("FoundCmd <%s> Type %d\n\r", cmdStr, (*it)->_cmdType); - cmdFound = true; - if ((*it)->_cmdType == RdWebServerCmdDef::CMD_CALLBACK) - { - ((*it)->_callback)(cmdStr, argStr); - } - else if ((*it)->_cmdType == RdWebServerCmdDef::CMD_LOCALFILE) - { - if ((*it)->_substFileName[0] != '\0') - handleLocalFileRequest((*it)->_substFileName, argStr, &client, httpHeader, (*it)->_bCacheIfPossible); - else - handleLocalFileRequest(cmdStr, argStr, &client, httpHeader, (*it)->_bCacheIfPossible); - } - else if ((*it)->_cmdType == RdWebServerCmdDef::CMD_SDORUSBFILE) - { - if ((*it)->_substFileName[0] != '\0') - handleSDFileRequest((*it)->_substFileName, argStr, &client, httpHeader); - else - handleSDFileRequest(cmdStr, argStr, &client, httpHeader); - } - break; - } - } - // If command not found see if it is a local file - if (!cmdFound) - handleLocalFileRequest(cmdStr, argStr, &client, httpHeader, false); - } - - break; - } - - } - printf("Connection closed ... TCP server is listening...\r\n"); - client.close(); - if (_pStatusLed != NULL) - *_pStatusLed = false; - } - } -} - -void RdWebServer::addCommand(char* pCmdStr, int cmdType, CmdCallbackType callback, char* substFileName, bool cacheIfPossible) -{ - _commands.push_back(new RdWebServerCmdDef(pCmdStr, cmdType, callback, substFileName, cacheIfPossible)); -} -