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.

Committer:
Bobty
Date:
Tue May 05 20:27:33 2015 +0000
Revision:
15:0865fa4b046a
Parent:
14:4b83670854f0
Child:
16:0248bbfdb6c1
Pared back for work on stability - ok on LPC1768

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Bobty 3:594136d34a32 1 /* RdWebServer.cpp
Bobty 15:0865fa4b046a 2 Rob Dobson 2013-2015
Bobty 3:594136d34a32 3 Inspired by Jasper Schuurmans multi-threaded web server for Netduino http://www.schuurmans.cc/multi-threaded-web-server-for-netduino-plus
Bobty 3:594136d34a32 4 More details at http://robdobson.com/2013/10/moving-my-window-shades-control-to-mbed/
Bobty 3:594136d34a32 5 */
Bobty 3:594136d34a32 6
Bobty 12:c14ffd4ec125 7 #define RDWEB_DEBUG 5
Bobty 12:c14ffd4ec125 8
Bobty 0:b5b4d07f7827 9 #include "RdWebServer.h"
Bobty 0:b5b4d07f7827 10
Bobty 15:0865fa4b046a 11 const int MAX_CMDSTR_LEN = 100;
Bobty 15:0865fa4b046a 12 const int MAX_ARGSTR_LEN = 100;
Bobty 15:0865fa4b046a 13 const int MAX_FILENAME_LEN = (MAX_ARGSTR_LEN + 20);
Bobty 15:0865fa4b046a 14 const int MAX_MIMETYPE_LEN = 50;
Bobty 1:75bb184de749 15
Bobty 0:b5b4d07f7827 16 RdWebServer::RdWebServer()
Bobty 0:b5b4d07f7827 17 {
Bobty 15:0865fa4b046a 18 _initOk = false;
Bobty 0:b5b4d07f7827 19 _pStatusLed = NULL;
Bobty 0:b5b4d07f7827 20 }
Bobty 0:b5b4d07f7827 21
Bobty 0:b5b4d07f7827 22 RdWebServer::~RdWebServer()
Bobty 0:b5b4d07f7827 23 {
Bobty 2:9d8793c23b46 24 // Clean-up - probably never called as we're on a microcontroller!
Bobty 2:9d8793c23b46 25 for (std::vector<RdWebServerCmdDef*>::iterator it = _commands.begin() ; it != _commands.end(); ++it)
Bobty 2:9d8793c23b46 26 delete (*it);
Bobty 0:b5b4d07f7827 27 }
Bobty 0:b5b4d07f7827 28
Bobty 4:6afb3bbf20a4 29 bool RdWebServer::init(int port, DigitalOut* pStatusLed, char* pBaseWebFolder)
Bobty 0:b5b4d07f7827 30 {
Bobty 15:0865fa4b046a 31 // Settings
Bobty 0:b5b4d07f7827 32 _port = port;
Bobty 0:b5b4d07f7827 33 _pStatusLed = pStatusLed;
Bobty 4:6afb3bbf20a4 34 _pBaseWebFolder = pBaseWebFolder;
Bobty 0:b5b4d07f7827 35
Bobty 15:0865fa4b046a 36 // Setup tcp socket
Bobty 15:0865fa4b046a 37 _serverSocket.set_blocking(true);
Bobty 15:0865fa4b046a 38 if(_serverSocket.bind(port)< 0)
Bobty 0:b5b4d07f7827 39 {
Bobty 11:cec51b430b20 40 RD_WARN("TCP server bind fail\n\r");
Bobty 0:b5b4d07f7827 41 return false;
Bobty 0:b5b4d07f7827 42 }
Bobty 15:0865fa4b046a 43 if(_serverSocket.listen(1) < 0)
Bobty 0:b5b4d07f7827 44 {
Bobty 11:cec51b430b20 45 RD_WARN("TCP server listen fail\n\r");
Bobty 0:b5b4d07f7827 46 return false;
Bobty 0:b5b4d07f7827 47 }
Bobty 15:0865fa4b046a 48 RD_INFO("TCP server is listening...\r\n");
Bobty 15:0865fa4b046a 49 _initOk = true;
Bobty 6:46285c519af2 50 return true;
Bobty 6:46285c519af2 51 }
Bobty 6:46285c519af2 52
Bobty 15:0865fa4b046a 53 void RdWebServer::run()
Bobty 15:0865fa4b046a 54 {
Bobty 15:0865fa4b046a 55 // Check initialised ok
Bobty 15:0865fa4b046a 56 if (!_initOk)
Bobty 15:0865fa4b046a 57 return;
Bobty 15:0865fa4b046a 58
Bobty 15:0865fa4b046a 59 bool blockingOnAccept = true;
Bobty 15:0865fa4b046a 60 bool blockingOnReceive = true;
Bobty 15:0865fa4b046a 61 int timeoutOnBlocking = 2000;
Bobty 15:0865fa4b046a 62 const char* closeConnStr = "Connection: Close\r\n";
Bobty 15:0865fa4b046a 63 bool closeConnAfterSend = false;
Bobty 15:0865fa4b046a 64 bool closeConnOnReceiveFail = true;
Bobty 15:0865fa4b046a 65
Bobty 15:0865fa4b046a 66 // Start accepting connections
Bobty 15:0865fa4b046a 67 while (true)
Bobty 15:0865fa4b046a 68 {
Bobty 15:0865fa4b046a 69 TCPSocketConnection clientSocketConn;
Bobty 15:0865fa4b046a 70 // Accept connection if available
Bobty 15:0865fa4b046a 71 RD_INFO("Waiting for TCP connection\r\n");
Bobty 15:0865fa4b046a 72 clientSocketConn.set_blocking(blockingOnAccept, timeoutOnBlocking);
Bobty 15:0865fa4b046a 73 if(_serverSocket.accept(clientSocketConn)<0)
Bobty 15:0865fa4b046a 74 {
Bobty 15:0865fa4b046a 75 RD_WARN("TCP Socket failed to accept connection\n\r");
Bobty 15:0865fa4b046a 76 continue;
Bobty 15:0865fa4b046a 77 }
Bobty 15:0865fa4b046a 78
Bobty 15:0865fa4b046a 79 // Connection
Bobty 15:0865fa4b046a 80 RD_INFO("Connection from IP: %s\n\r", clientSocketConn.get_address());
Bobty 15:0865fa4b046a 81 if (_pStatusLed != NULL)
Bobty 15:0865fa4b046a 82 *_pStatusLed = true;
Bobty 15:0865fa4b046a 83
Bobty 15:0865fa4b046a 84 // While connected
Bobty 15:0865fa4b046a 85 bool forcedClosed = false;
Bobty 15:0865fa4b046a 86 while(clientSocketConn.is_connected() && !forcedClosed)
Bobty 15:0865fa4b046a 87 {
Bobty 15:0865fa4b046a 88 // Receive data
Bobty 15:0865fa4b046a 89 clientSocketConn.set_blocking(blockingOnReceive, timeoutOnBlocking);
Bobty 15:0865fa4b046a 90 int rxLen = clientSocketConn.receive(_buffer, HTTPD_MAX_REQ_LENGTH);
Bobty 15:0865fa4b046a 91 if (rxLen == -1)
Bobty 15:0865fa4b046a 92 {
Bobty 15:0865fa4b046a 93 RD_DBG("clientSocketConn.receive() returned %d\r\n", rxLen);
Bobty 15:0865fa4b046a 94 if (closeConnOnReceiveFail)
Bobty 15:0865fa4b046a 95 {
Bobty 15:0865fa4b046a 96 int closeRet = clientSocketConn.close();
Bobty 15:0865fa4b046a 97 RD_DBG("Failed receive connection close() ret %d is connected %d\r\n", closeRet, clientSocketConn.is_connected());
Bobty 15:0865fa4b046a 98 forcedClosed = true;
Bobty 15:0865fa4b046a 99 }
Bobty 15:0865fa4b046a 100 continue;
Bobty 15:0865fa4b046a 101 }
Bobty 15:0865fa4b046a 102 if (rxLen == 0)
Bobty 15:0865fa4b046a 103 {
Bobty 15:0865fa4b046a 104 RD_DBG("clientSocketConn.receive() returned %d - ignoring\r\n", rxLen);
Bobty 15:0865fa4b046a 105 continue;
Bobty 15:0865fa4b046a 106 }
Bobty 15:0865fa4b046a 107 if (rxLen > HTTPD_MAX_REQ_LENGTH)
Bobty 15:0865fa4b046a 108 {
Bobty 15:0865fa4b046a 109 RD_DBG("clientSocketConn.receive() returned %d - too long\r\n", rxLen);
Bobty 15:0865fa4b046a 110 continue;
Bobty 15:0865fa4b046a 111 }
Bobty 15:0865fa4b046a 112
Bobty 15:0865fa4b046a 113 RD_DBG("Received len %d\r\n", rxLen);
Bobty 15:0865fa4b046a 114 _buffer[rxLen] = '\0';
Bobty 15:0865fa4b046a 115 RD_DBG("%s\r\n", _buffer);
Bobty 15:0865fa4b046a 116
Bobty 15:0865fa4b046a 117 // Send a response
Bobty 15:0865fa4b046a 118 char* content = "HELLO\r\n";
Bobty 15:0865fa4b046a 119 int sz = strlen(content);
Bobty 15:0865fa4b046a 120 sprintf(_httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nContent-Length: %d\r\n%s\r\n", sz, closeConnAfterSend ? closeConnStr : "");
Bobty 15:0865fa4b046a 121 int sentRet = clientSocketConn.send(_httpHeader,strlen(_httpHeader));
Bobty 15:0865fa4b046a 122 int sentRet2 = clientSocketConn.send(content, strlen(content));
Bobty 15:0865fa4b046a 123
Bobty 15:0865fa4b046a 124 RD_DBG("Sent %s header ret %d content ret %d now connected %d\r\n", content, sentRet, sentRet2, clientSocketConn.is_connected());
Bobty 15:0865fa4b046a 125
Bobty 15:0865fa4b046a 126 if (closeConnAfterSend)
Bobty 15:0865fa4b046a 127 {
Bobty 15:0865fa4b046a 128 int closeRet = clientSocketConn.close();
Bobty 15:0865fa4b046a 129 RD_DBG("After send connection close() ret %d\r\n", closeRet);
Bobty 15:0865fa4b046a 130 }
Bobty 15:0865fa4b046a 131 }
Bobty 15:0865fa4b046a 132 }
Bobty 15:0865fa4b046a 133 }
Bobty 15:0865fa4b046a 134
Bobty 15:0865fa4b046a 135 // connectLimitTimer.reset();
Bobty 15:0865fa4b046a 136 // connectLimitTimer.start();
Bobty 15:0865fa4b046a 137 // while(true)
Bobty 15:0865fa4b046a 138 // {
Bobty 15:0865fa4b046a 139 // // Check connection timer - 10 seconds timeout on HTTP operation
Bobty 15:0865fa4b046a 140 // if (connectLimitTimer.read() >= 10)
Bobty 15:0865fa4b046a 141 // {
Bobty 15:0865fa4b046a 142 // RD_WARN("Connection timed out\n\r");
Bobty 15:0865fa4b046a 143 // break;
Bobty 15:0865fa4b046a 144 // }
Bobty 15:0865fa4b046a 145 // // Get received data
Bobty 15:0865fa4b046a 146 // int rxLen = clientSocketConn.receive(_buffer, HTTPD_MAX_REQ_LENGTH);
Bobty 15:0865fa4b046a 147 // if (rxLen == -1)
Bobty 15:0865fa4b046a 148 // {
Bobty 15:0865fa4b046a 149 // RD_WARN("Nothing received\n\r");
Bobty 15:0865fa4b046a 150 // continue;
Bobty 15:0865fa4b046a 151 // }
Bobty 15:0865fa4b046a 152 // else if (rxLen == 0)
Bobty 15:0865fa4b046a 153 // {
Bobty 15:0865fa4b046a 154 // RD_WARN("received buffer is empty.\n\r");
Bobty 15:0865fa4b046a 155 // break;
Bobty 15:0865fa4b046a 156 // }
Bobty 15:0865fa4b046a 157 // else if (rxLen > HTTPD_MAX_REQ_LENGTH)
Bobty 15:0865fa4b046a 158 // {
Bobty 15:0865fa4b046a 159 // sprintf(_httpHeader,"HTTP/1.1 413 Request Entity Too Large \r\nContent-Type: text\r\nConnection: Close\r\n\r\n");
Bobty 15:0865fa4b046a 160 // clientSocketConn.send_all(_httpHeader,strlen(_httpHeader));
Bobty 15:0865fa4b046a 161 // clientSocketConn.send_all(_buffer, rxLen);
Bobty 15:0865fa4b046a 162 // break;
Bobty 15:0865fa4b046a 163 // }
Bobty 15:0865fa4b046a 164 // _buffer[rxLen] = '\0';
Bobty 15:0865fa4b046a 165 //
Bobty 15:0865fa4b046a 166 // // Handle buffer
Bobty 15:0865fa4b046a 167 // if (handleReceivedHttp(clientSocketConn))
Bobty 15:0865fa4b046a 168 // {
Bobty 15:0865fa4b046a 169 // break;
Bobty 15:0865fa4b046a 170 // }
Bobty 15:0865fa4b046a 171 // else
Bobty 15:0865fa4b046a 172 // {
Bobty 15:0865fa4b046a 173 // connectLimitTimer.reset();
Bobty 15:0865fa4b046a 174 // connectLimitTimer.start();
Bobty 15:0865fa4b046a 175 // }
Bobty 15:0865fa4b046a 176 // }
Bobty 15:0865fa4b046a 177 //
Bobty 15:0865fa4b046a 178 // // Connection now closed
Bobty 15:0865fa4b046a 179 // RD_INFO("Connection closed ...\r\n");
Bobty 15:0865fa4b046a 180 // clientSocketConn.close();
Bobty 15:0865fa4b046a 181 // if (_pStatusLed != NULL)
Bobty 15:0865fa4b046a 182 // *_pStatusLed = false;
Bobty 15:0865fa4b046a 183 // }
Bobty 15:0865fa4b046a 184 //
Bobty 15:0865fa4b046a 185 // }
Bobty 15:0865fa4b046a 186 //}
Bobty 15:0865fa4b046a 187 //
Bobty 15:0865fa4b046a 188 bool RdWebServer::handleReceivedHttp(TCPSocketConnection &clientSocketConn)
Bobty 6:46285c519af2 189 {
Bobty 14:4b83670854f0 190 bool closeConn = true;
Bobty 11:cec51b430b20 191 RD_DBG("Received Data: %d\n\r\n\r%.*s\n\r",strlen(_buffer),strlen(_buffer),_buffer);
Bobty 7:fe7c33f7fbb8 192 int method = METHOD_OTHER;
Bobty 6:46285c519af2 193 if (strncmp(_buffer, "GET ", 4) == 0)
Bobty 7:fe7c33f7fbb8 194 method = METHOD_GET;
Bobty 7:fe7c33f7fbb8 195 if (strncmp(_buffer, "POST", 4) == 0)
Bobty 7:fe7c33f7fbb8 196 method = METHOD_POST;
Bobty 7:fe7c33f7fbb8 197
Bobty 7:fe7c33f7fbb8 198 char cmdStr[MAX_CMDSTR_LEN];
Bobty 7:fe7c33f7fbb8 199 char argStr[MAX_ARGSTR_LEN];
Bobty 7:fe7c33f7fbb8 200 if (extractCmdArgs(_buffer+3, cmdStr, MAX_CMDSTR_LEN, argStr, MAX_ARGSTR_LEN))
Bobty 6:46285c519af2 201 {
Bobty 11:cec51b430b20 202 RD_DBG("CmdStr %s\n\r", cmdStr);
Bobty 11:cec51b430b20 203 RD_DBG("ArgStr %s\n\r", argStr);
Bobty 7:fe7c33f7fbb8 204 bool cmdFound = false;
Bobty 7:fe7c33f7fbb8 205 for (std::vector<RdWebServerCmdDef*>::iterator it = _commands.begin() ; it != _commands.end(); ++it)
Bobty 6:46285c519af2 206 {
Bobty 11:cec51b430b20 207 RD_DBG("Testing <<%s>> with <<%s>>\r\n", (*it)->_pCmdStr, cmdStr);
Bobty 7:fe7c33f7fbb8 208 if (strcasecmp((*it)->_pCmdStr, cmdStr) == 0)
Bobty 7:fe7c33f7fbb8 209 {
Bobty 11:cec51b430b20 210 RD_DBG("FoundCmd <%s> Type %d\n\r", cmdStr, (*it)->_cmdType);
Bobty 7:fe7c33f7fbb8 211 cmdFound = true;
Bobty 7:fe7c33f7fbb8 212 if ((*it)->_cmdType == RdWebServerCmdDef::CMD_CALLBACK)
Bobty 7:fe7c33f7fbb8 213 {
Bobty 7:fe7c33f7fbb8 214 char* respStr = ((*it)->_callback)(method, cmdStr, argStr);
Bobty 15:0865fa4b046a 215 clientSocketConn.send_all(respStr, strlen(respStr));
Bobty 6:46285c519af2 216 }
Bobty 7:fe7c33f7fbb8 217 else if ((*it)->_cmdType == RdWebServerCmdDef::CMD_LOCALFILE)
Bobty 7:fe7c33f7fbb8 218 {
Bobty 15:0865fa4b046a 219 #ifdef SUPPORT_LOCAL_FILE_CACHE
Bobty 7:fe7c33f7fbb8 220 if ((*it)->_substFileName[0] != '\0')
Bobty 13:4f9c09d3da13 221 {
Bobty 13:4f9c09d3da13 222 char combinedFileName[MAX_FILENAME_LEN];
Bobty 13:4f9c09d3da13 223 strcpy(combinedFileName, (*it)->_substFileName);
Bobty 13:4f9c09d3da13 224 if (combinedFileName[strlen(combinedFileName)-1] == '*')
Bobty 13:4f9c09d3da13 225 strcpy(combinedFileName+strlen(combinedFileName)-1, argStr);
Bobty 15:0865fa4b046a 226 handleLocalFileRequest(combinedFileName, argStr, clientSocketConn, _httpHeader, (*it)->_bCacheIfPossible);
Bobty 13:4f9c09d3da13 227 }
Bobty 7:fe7c33f7fbb8 228 else
Bobty 15:0865fa4b046a 229 #endif
Bobty 13:4f9c09d3da13 230 {
Bobty 15:0865fa4b046a 231 handleLocalFileRequest(cmdStr, argStr, clientSocketConn, _httpHeader, (*it)->_bCacheIfPossible);
Bobty 13:4f9c09d3da13 232 }
Bobty 7:fe7c33f7fbb8 233 }
Bobty 7:fe7c33f7fbb8 234 else if ((*it)->_cmdType == RdWebServerCmdDef::CMD_SDORUSBFILE)
Bobty 7:fe7c33f7fbb8 235 {
Bobty 15:0865fa4b046a 236 #ifdef SUPPORT_LOCAL_FILE_CACHE
Bobty 7:fe7c33f7fbb8 237 if ((*it)->_substFileName[0] != '\0')
Bobty 13:4f9c09d3da13 238 {
Bobty 13:4f9c09d3da13 239 char combinedFileName[MAX_FILENAME_LEN];
Bobty 13:4f9c09d3da13 240 strcpy(combinedFileName, (*it)->_substFileName);
Bobty 13:4f9c09d3da13 241 if (combinedFileName[strlen(combinedFileName)-1] == '*')
Bobty 13:4f9c09d3da13 242 strcpy(combinedFileName+strlen(combinedFileName)-1, argStr);
Bobty 15:0865fa4b046a 243 closeConn = handleSDFileRequest(combinedFileName, argStr, clientSocketConn, _httpHeader);
Bobty 13:4f9c09d3da13 244 }
Bobty 7:fe7c33f7fbb8 245 else
Bobty 15:0865fa4b046a 246 #endif
Bobty 13:4f9c09d3da13 247 {
Bobty 15:0865fa4b046a 248 closeConn = handleSDFileRequest(cmdStr, argStr, clientSocketConn, _httpHeader);
Bobty 13:4f9c09d3da13 249 }
Bobty 7:fe7c33f7fbb8 250 }
Bobty 7:fe7c33f7fbb8 251 break;
Bobty 6:46285c519af2 252 }
Bobty 6:46285c519af2 253 }
Bobty 7:fe7c33f7fbb8 254 // If command not found see if it is a local file
Bobty 7:fe7c33f7fbb8 255 if (!cmdFound)
Bobty 15:0865fa4b046a 256 closeConn = handleSDFileRequest(cmdStr, argStr, clientSocketConn, _httpHeader);
Bobty 6:46285c519af2 257 }
Bobty 14:4b83670854f0 258 return closeConn;
Bobty 6:46285c519af2 259 }
Bobty 6:46285c519af2 260
Bobty 6:46285c519af2 261 void RdWebServer::addCommand(char* pCmdStr, int cmdType, CmdCallbackType callback, char* substFileName, bool cacheIfPossible)
Bobty 6:46285c519af2 262 {
Bobty 6:46285c519af2 263 _commands.push_back(new RdWebServerCmdDef(pCmdStr, cmdType, callback, substFileName, cacheIfPossible));
Bobty 6:46285c519af2 264 }
Bobty 6:46285c519af2 265
Bobty 15:0865fa4b046a 266 bool RdWebServer::handleSDFileRequest(char* inFileName, char* argStr, TCPSocketConnection &clientSocketConn, char* httpHeader)
Bobty 6:46285c519af2 267 {
Bobty 14:4b83670854f0 268 bool closeConn = true;
Bobty 6:46285c519af2 269 const int HTTPD_MAX_FNAME_LENGTH = 127;
Bobty 6:46285c519af2 270 char filename[HTTPD_MAX_FNAME_LENGTH+1];
Bobty 6:46285c519af2 271
Bobty 11:cec51b430b20 272 RD_INFO("Requesting file %s\n\r", inFileName);
Bobty 6:46285c519af2 273
Bobty 12:c14ffd4ec125 274 #ifdef SUPPORT_FOLDER_VIEW
Bobty 10:b4b9d4d5e5be 275 if ((strlen(inFileName) > 0) && (inFileName[strlen(inFileName)-1] == '/'))
Bobty 6:46285c519af2 276 {
Bobty 11:cec51b430b20 277 RD_INFO("Request directory %s%s\r\n", _pBaseWebFolder, inFileName);
Bobty 6:46285c519af2 278 sprintf(filename, "%s%s", _pBaseWebFolder, inFileName);
Bobty 6:46285c519af2 279 DIR *d = opendir(filename);
Bobty 11:cec51b430b20 280 if (d != NULL)
Bobty 11:cec51b430b20 281 {
Bobty 6:46285c519af2 282 sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n");
Bobty 15:0865fa4b046a 283 clientSocketConn.send_all(httpHeader,strlen(httpHeader));
Bobty 6:46285c519af2 284 sprintf(httpHeader,"<html><head><title>Directory Listing</title></head><body><h1>%s</h1><ul>", inFileName);
Bobty 15:0865fa4b046a 285 clientSocketConn.send_all(httpHeader,strlen(httpHeader));
Bobty 6:46285c519af2 286 struct dirent *p;
Bobty 11:cec51b430b20 287 while((p = readdir(d)) != NULL)
Bobty 11:cec51b430b20 288 {
Bobty 11:cec51b430b20 289 RD_INFO("%s\r\n", p->d_name);
Bobty 6:46285c519af2 290 sprintf(httpHeader,"<li>%s</li>", p->d_name);
Bobty 15:0865fa4b046a 291 clientSocketConn.send_all(httpHeader,strlen(httpHeader));
Bobty 6:46285c519af2 292 }
Bobty 6:46285c519af2 293 }
Bobty 6:46285c519af2 294 closedir(d);
Bobty 11:cec51b430b20 295 RD_DBG("Directory closed\n");
Bobty 6:46285c519af2 296 sprintf(httpHeader,"</ul></body></html>");
Bobty 15:0865fa4b046a 297 clientSocketConn.send_all(httpHeader,strlen(httpHeader));
Bobty 6:46285c519af2 298 }
Bobty 6:46285c519af2 299 else
Bobty 12:c14ffd4ec125 300 #endif
Bobty 6:46285c519af2 301 {
Bobty 6:46285c519af2 302 sprintf(filename, "%s%s", _pBaseWebFolder, inFileName);
Bobty 11:cec51b430b20 303 RD_INFO("Filename %s\r\n", filename);
Bobty 6:46285c519af2 304
Bobty 6:46285c519af2 305 FILE* fp = fopen(filename, "r");
Bobty 6:46285c519af2 306 if (fp == NULL)
Bobty 6:46285c519af2 307 {
Bobty 11:cec51b430b20 308 RD_WARN("Filename %s not found\r\n", filename);
Bobty 14:4b83670854f0 309 sprintf(httpHeader,"HTTP/1.1 404 Not Found \r\nContent-Type: text\r\nContent-Length: 0\r\n\r\n");
Bobty 15:0865fa4b046a 310 clientSocketConn.send_all(httpHeader,strlen(httpHeader));
Bobty 14:4b83670854f0 311 closeConn = false;
Bobty 6:46285c519af2 312 }
Bobty 6:46285c519af2 313 else
Bobty 6:46285c519af2 314 {
Bobty 11:cec51b430b20 315 RD_INFO("Sending file %s\r\n", filename);
Bobty 14:4b83670854f0 316 fseek(fp, 0L, SEEK_END);
Bobty 14:4b83670854f0 317 int sz = ftell(fp);
Bobty 14:4b83670854f0 318 fseek(fp, 0L, SEEK_SET);
Bobty 14:4b83670854f0 319 sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nContent-Length: %d\r\n\r\n", sz);
Bobty 15:0865fa4b046a 320 clientSocketConn.send_all(httpHeader,strlen(httpHeader));
Bobty 14:4b83670854f0 321 // MIME type
Bobty 14:4b83670854f0 322 char *pDot = strrchr(filename, '.');
Bobty 14:4b83670854f0 323 char mimeType[MAX_MIMETYPE_LEN+1];
Bobty 14:4b83670854f0 324 if (pDot && (!strcmp(pDot, ".html") || !strcmp(pDot, ".htm")))
Bobty 14:4b83670854f0 325 strcpy(mimeType, "Content-Type: text/html\r\n");
Bobty 14:4b83670854f0 326 else if (pDot && !strcmp(pDot, ".css"))
Bobty 14:4b83670854f0 327 strcpy(mimeType, "Content-Type: text/css\r\n");
Bobty 14:4b83670854f0 328 if (pDot && !strcmp(pDot, ".js"))
Bobty 14:4b83670854f0 329 strcpy(mimeType, "Content-Type: application/javascript\r\n");
Bobty 15:0865fa4b046a 330 // clientSocketConn.send_all(mimeType,strlen(mimeType));
Bobty 14:4b83670854f0 331 RD_INFO("MIME TYPE %s", mimeType);
Bobty 14:4b83670854f0 332 // Read file in blocks and send
Bobty 6:46285c519af2 333 int rdCnt = 0;
Bobty 6:46285c519af2 334 char fileBuf[1024];
Bobty 6:46285c519af2 335 while ((rdCnt = fread(fileBuf, sizeof( char ), 1024, fp)) == 1024)
Bobty 6:46285c519af2 336 {
Bobty 15:0865fa4b046a 337 clientSocketConn.send_all(fileBuf, rdCnt);
Bobty 6:46285c519af2 338 }
Bobty 15:0865fa4b046a 339 clientSocketConn.send_all(fileBuf, rdCnt);
Bobty 6:46285c519af2 340 fclose(fp);
Bobty 14:4b83670854f0 341 closeConn = false;
Bobty 6:46285c519af2 342 }
Bobty 6:46285c519af2 343 }
Bobty 14:4b83670854f0 344 return closeConn;
Bobty 6:46285c519af2 345 }
Bobty 6:46285c519af2 346
Bobty 15:0865fa4b046a 347 #ifdef SUPPORT_LOCAL_FILE_CACHE
Bobty 15:0865fa4b046a 348
Bobty 15:0865fa4b046a 349 void RdWebServer::sendFromCache(RdFileCacheEntry* pCacheEntry, TCPSocketConnection &clientSocketConn, char* httpHeader)
Bobty 6:46285c519af2 350 {
Bobty 11:cec51b430b20 351 RD_INFO("Sending file %s from cache %d bytes\r\n", pCacheEntry->_fileName, pCacheEntry->_nFileLen);
Bobty 6:46285c519af2 352 sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n");
Bobty 15:0865fa4b046a 353 clientSocketConn.send_all(httpHeader,strlen(httpHeader));
Bobty 6:46285c519af2 354 char* pMem = pCacheEntry->_pFileContent;
Bobty 6:46285c519af2 355 int nLenLeft = pCacheEntry->_nFileLen;
Bobty 6:46285c519af2 356 int blkSize = 2048;
Bobty 6:46285c519af2 357 while(nLenLeft > 0)
Bobty 6:46285c519af2 358 {
Bobty 6:46285c519af2 359 if (blkSize > nLenLeft)
Bobty 6:46285c519af2 360 blkSize = nLenLeft;
Bobty 15:0865fa4b046a 361 clientSocketConn.send_all(pMem, blkSize);
Bobty 6:46285c519af2 362 pMem += blkSize;
Bobty 6:46285c519af2 363 nLenLeft -= blkSize;
Bobty 6:46285c519af2 364 }
Bobty 6:46285c519af2 365 }
Bobty 15:0865fa4b046a 366 #endif
Bobty 6:46285c519af2 367
Bobty 15:0865fa4b046a 368 void RdWebServer::handleLocalFileRequest(char* inFileName, char* argStr, TCPSocketConnection &clientSocketConn, char* httpHeader, bool bCacheIfPossible)
Bobty 6:46285c519af2 369 {
Bobty 12:c14ffd4ec125 370
Bobty 12:c14ffd4ec125 371 #ifdef SUPPORT_LOCAL_FILESYSTEM
Bobty 12:c14ffd4ec125 372
Bobty 6:46285c519af2 373 const int HTTPD_MAX_FNAME_LENGTH = 127;
Bobty 6:46285c519af2 374 char localFilename[HTTPD_MAX_FNAME_LENGTH+1];
Bobty 6:46285c519af2 375 char reqFileNameStr[HTTPD_MAX_FNAME_LENGTH+1];
Bobty 6:46285c519af2 376
Bobty 11:cec51b430b20 377 RD_INFO("Requesting local file %s\n\r", inFileName);
Bobty 6:46285c519af2 378 sprintf(reqFileNameStr, "/%s", inFileName);
Bobty 6:46285c519af2 379 sprintf(localFilename, "/local/%s", inFileName);
Bobty 6:46285c519af2 380
Bobty 6:46285c519af2 381 if (bCacheIfPossible)
Bobty 6:46285c519af2 382 {
Bobty 6:46285c519af2 383 // Check if file already cached
Bobty 6:46285c519af2 384 bool bTryToCache = true;
Bobty 6:46285c519af2 385 for (std::vector<RdFileCacheEntry*>::iterator it = _cachedFiles.begin() ; it != _cachedFiles.end(); ++it)
Bobty 6:46285c519af2 386 {
Bobty 6:46285c519af2 387 if (strcmp(inFileName, (*it)->_fileName) == 0)
Bobty 6:46285c519af2 388 {
Bobty 6:46285c519af2 389 if ((*it)->_bCacheValid)
Bobty 6:46285c519af2 390 {
Bobty 15:0865fa4b046a 391 sendFromCache(*it, clientSocketConn, httpHeader);
Bobty 6:46285c519af2 392 return;
Bobty 6:46285c519af2 393 }
Bobty 6:46285c519af2 394 bTryToCache = false; // don't try to cache as cacheing must have already failed
Bobty 6:46285c519af2 395 }
Bobty 6:46285c519af2 396 }
Bobty 6:46285c519af2 397
Bobty 6:46285c519af2 398 // See if we can cache the file
Bobty 6:46285c519af2 399 if (bTryToCache)
Bobty 6:46285c519af2 400 {
Bobty 6:46285c519af2 401 RdFileCacheEntry* pCacheEntry = new RdFileCacheEntry(inFileName);
Bobty 6:46285c519af2 402 if (pCacheEntry)
Bobty 6:46285c519af2 403 {
Bobty 6:46285c519af2 404 bool bCacheSuccess = pCacheEntry->readLocalFileIntoCache(localFilename);
Bobty 6:46285c519af2 405 // Store the cache entry even if reading failed (mem alloc or file not found, etc) so we don't try to cache again
Bobty 6:46285c519af2 406 _cachedFiles.push_back(pCacheEntry);
Bobty 6:46285c519af2 407 if (bCacheSuccess)
Bobty 6:46285c519af2 408 {
Bobty 15:0865fa4b046a 409 sendFromCache(pCacheEntry, clientSocketConn, httpHeader);
Bobty 6:46285c519af2 410 return;
Bobty 6:46285c519af2 411 }
Bobty 6:46285c519af2 412 }
Bobty 6:46285c519af2 413 }
Bobty 6:46285c519af2 414 }
Bobty 6:46285c519af2 415
Bobty 6:46285c519af2 416 LocalFileSystem local("local");
Bobty 6:46285c519af2 417
Bobty 6:46285c519af2 418 FILE* fp = fopen(localFilename, "r");
Bobty 6:46285c519af2 419 if (fp == NULL)
Bobty 6:46285c519af2 420 {
Bobty 11:cec51b430b20 421 RD_WARN("Local file %s not found\r\n", localFilename);
Bobty 6:46285c519af2 422 sprintf(httpHeader,"HTTP/1.1 404 Not Found \r\nContent-Type: text\r\nConnection: Close\r\n\r\n");
Bobty 15:0865fa4b046a 423 clientSocketConn.send_all(httpHeader,strlen(httpHeader));
Bobty 15:0865fa4b046a 424 clientSocketConn.send_all(reqFileNameStr,strlen(reqFileNameStr));
Bobty 6:46285c519af2 425 }
Bobty 6:46285c519af2 426 else
Bobty 6:46285c519af2 427 {
Bobty 11:cec51b430b20 428 RD_INFO("Sending file %s from disk\r\n", localFilename);
Bobty 6:46285c519af2 429 sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n");
Bobty 15:0865fa4b046a 430 clientSocketConn.send_all(httpHeader,strlen(httpHeader));
Bobty 6:46285c519af2 431 int rdCnt = 0;
Bobty 6:46285c519af2 432 char fileBuf[2000];
Bobty 6:46285c519af2 433 while ((rdCnt = fread(fileBuf, sizeof( char ), 2000, fp)) == 2000)
Bobty 6:46285c519af2 434 {
Bobty 15:0865fa4b046a 435 clientSocketConn.send_all(fileBuf, rdCnt);
Bobty 6:46285c519af2 436 }
Bobty 15:0865fa4b046a 437 clientSocketConn.send_all(fileBuf, rdCnt);
Bobty 6:46285c519af2 438 fclose(fp);
Bobty 6:46285c519af2 439 }
Bobty 12:c14ffd4ec125 440
Bobty 12:c14ffd4ec125 441 #else
Bobty 12:c14ffd4ec125 442
Bobty 12:c14ffd4ec125 443 RD_WARN("Local file system not supported\r\n");
Bobty 12:c14ffd4ec125 444 sprintf(httpHeader,"HTTP/1.1 404 Not Found \r\nContent-Type: text\r\nConnection: Close\r\n\r\n");
Bobty 15:0865fa4b046a 445 clientSocketConn.send_all(httpHeader,strlen(httpHeader));
Bobty 15:0865fa4b046a 446 clientSocketConn.send_all(inFileName,strlen(inFileName));
Bobty 12:c14ffd4ec125 447
Bobty 12:c14ffd4ec125 448 #endif
Bobty 6:46285c519af2 449 }
Bobty 6:46285c519af2 450
Bobty 15:0865fa4b046a 451 #ifdef SUPPORT_LOCAL_FILE_CACHE
Bobty 15:0865fa4b046a 452
Bobty 6:46285c519af2 453 bool RdFileCacheEntry::readLocalFileIntoCache(char* fileName)
Bobty 6:46285c519af2 454 {
Bobty 12:c14ffd4ec125 455 #ifdef SUPPORT_LOCAL_FILESYSTEM
Bobty 12:c14ffd4ec125 456
Bobty 11:cec51b430b20 457 RD_INFO("Reading into cache %s\n\r", fileName);
Bobty 6:46285c519af2 458 LocalFileSystem local("local");
Bobty 6:46285c519af2 459 FILE* fp = fopen(fileName, "r");
Bobty 6:46285c519af2 460 if (fp == NULL)
Bobty 6:46285c519af2 461 {
Bobty 11:cec51b430b20 462 RD_WARN("Failed to open file\n\r");
Bobty 6:46285c519af2 463 return false;
Bobty 6:46285c519af2 464 }
Bobty 11:cec51b430b20 465 RD_DBG("Seeking\n\r");
Bobty 6:46285c519af2 466 fseek(fp, 0, SEEK_END);
Bobty 6:46285c519af2 467 _nFileLen = (int)ftell(fp);
Bobty 6:46285c519af2 468 _pFileContent = new char[_nFileLen];
Bobty 11:cec51b430b20 469 RD_DBG("Len %d Buf %08x\n\r", _nFileLen, _pFileContent);
Bobty 6:46285c519af2 470 if (!_pFileContent)
Bobty 6:46285c519af2 471 {
Bobty 11:cec51b430b20 472 RD_WARN("Failed to allocate %lu\n\r", _nFileLen);
Bobty 6:46285c519af2 473 fclose(fp);
Bobty 6:46285c519af2 474 return false;
Bobty 6:46285c519af2 475 }
Bobty 11:cec51b430b20 476 RD_DBG("Allocated\n\r");
Bobty 6:46285c519af2 477 memset(_pFileContent, 0, _nFileLen);
Bobty 6:46285c519af2 478 fseek(fp, 0, SEEK_SET);
Bobty 6:46285c519af2 479 char* pMem = _pFileContent;
Bobty 6:46285c519af2 480 char fileBuf[100];
Bobty 6:46285c519af2 481 int totCnt = 0;
Bobty 6:46285c519af2 482 int rdCnt = 0;
Bobty 11:cec51b430b20 483 RD_DBG("Reading\n\r");
Bobty 6:46285c519af2 484 while (true)
Bobty 6:46285c519af2 485 {
Bobty 6:46285c519af2 486 int toRead = _nFileLen - totCnt;
Bobty 6:46285c519af2 487 if (toRead > sizeof(fileBuf))
Bobty 6:46285c519af2 488 toRead = sizeof(fileBuf);
Bobty 6:46285c519af2 489 if (toRead <= 0)
Bobty 6:46285c519af2 490 break;
Bobty 6:46285c519af2 491 rdCnt = fread(fileBuf, sizeof(char), toRead, fp);
Bobty 6:46285c519af2 492 if (rdCnt <= 0)
Bobty 6:46285c519af2 493 break;
Bobty 11:cec51b430b20 494 RD_DBG("Read %d tot %d of %d\n\r", rdCnt, totCnt, _nFileLen);
Bobty 6:46285c519af2 495 memcpy(pMem, fileBuf, rdCnt);
Bobty 6:46285c519af2 496 pMem += rdCnt;
Bobty 6:46285c519af2 497 totCnt += rdCnt;
Bobty 6:46285c519af2 498 }
Bobty 11:cec51b430b20 499 RD_DBG("Done read\n\r");
Bobty 6:46285c519af2 500 fclose(fp);
Bobty 11:cec51b430b20 501 RD_DBG("Success in caching %d bytes (read %d)\n\r", _nFileLen, totCnt);
Bobty 6:46285c519af2 502 _bCacheValid = true;
Bobty 0:b5b4d07f7827 503 return true;
Bobty 12:c14ffd4ec125 504 #else
Bobty 12:c14ffd4ec125 505 return false;
Bobty 12:c14ffd4ec125 506 #endif
Bobty 0:b5b4d07f7827 507 }
Bobty 0:b5b4d07f7827 508
Bobty 15:0865fa4b046a 509 #endif
Bobty 15:0865fa4b046a 510
Bobty 1:75bb184de749 511 bool RdWebServer::extractCmdArgs(char* buf, char* pCmdStr, int maxCmdStrLen, char* pArgStr, int maxArgStrLen)
Bobty 1:75bb184de749 512 {
Bobty 1:75bb184de749 513 *pCmdStr = '\0';
Bobty 1:75bb184de749 514 *pArgStr = '\0';
Bobty 1:75bb184de749 515 int cmdStrLen = 0;
Bobty 1:75bb184de749 516 int argStrLen = 0;
Bobty 1:75bb184de749 517 if (buf == NULL)
Bobty 1:75bb184de749 518 return false;
Bobty 7:fe7c33f7fbb8 519 // Check for first slash
Bobty 1:75bb184de749 520 char* pSlash1 = strchr(buf, '/');
Bobty 1:75bb184de749 521 if (pSlash1 == NULL)
Bobty 1:75bb184de749 522 return false;
Bobty 1:75bb184de749 523 pSlash1++;
Bobty 7:fe7c33f7fbb8 524 // Extract command
Bobty 1:75bb184de749 525 while(*pSlash1)
Bobty 1:75bb184de749 526 {
Bobty 1:75bb184de749 527 if (cmdStrLen >= maxCmdStrLen-1)
Bobty 1:75bb184de749 528 break;
Bobty 7:fe7c33f7fbb8 529 if ((*pSlash1 == '/') || (*pSlash1 == ' ') || (*pSlash1 == '\n') || (*pSlash1 == '?') || (*pSlash1 == '&'))
Bobty 1:75bb184de749 530 break;
Bobty 1:75bb184de749 531 *pCmdStr++ = *pSlash1++;
Bobty 1:75bb184de749 532 *pCmdStr = '\0';
Bobty 1:75bb184de749 533 cmdStrLen++;
Bobty 1:75bb184de749 534 }
Bobty 1:75bb184de749 535 if ((*pSlash1 == '\0') || (*pSlash1 == ' ') || (*pSlash1 == '\n'))
Bobty 1:75bb184de749 536 return true;
Bobty 7:fe7c33f7fbb8 537 // Now args
Bobty 1:75bb184de749 538 *pSlash1++;
Bobty 1:75bb184de749 539 while(*pSlash1)
Bobty 1:75bb184de749 540 {
Bobty 1:75bb184de749 541 if (argStrLen >= maxArgStrLen-1)
Bobty 1:75bb184de749 542 break;
Bobty 1:75bb184de749 543 if ((*pSlash1 == ' ') || (*pSlash1 == '\n'))
Bobty 1:75bb184de749 544 break;
Bobty 1:75bb184de749 545 *pArgStr++ = *pSlash1++;
Bobty 1:75bb184de749 546 *pArgStr = '\0';
Bobty 1:75bb184de749 547 argStrLen++;
Bobty 1:75bb184de749 548 }
Bobty 1:75bb184de749 549 return true;
Bobty 1:75bb184de749 550 }