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:
Mon May 11 11:17:15 2015 +0000
Revision:
17:080f2bed8b36
Parent:
16:0248bbfdb6c1
Child:
18:5de680c4cfcb
Improved settings

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 17:080f2bed8b36 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 1:75bb184de749 14
Bobty 0:b5b4d07f7827 15 RdWebServer::RdWebServer()
Bobty 0:b5b4d07f7827 16 {
Bobty 15:0865fa4b046a 17 _initOk = false;
Bobty 0:b5b4d07f7827 18 _pStatusLed = NULL;
Bobty 0:b5b4d07f7827 19 }
Bobty 0:b5b4d07f7827 20
Bobty 0:b5b4d07f7827 21 RdWebServer::~RdWebServer()
Bobty 0:b5b4d07f7827 22 {
Bobty 2:9d8793c23b46 23 // Clean-up - probably never called as we're on a microcontroller!
Bobty 2:9d8793c23b46 24 for (std::vector<RdWebServerCmdDef*>::iterator it = _commands.begin() ; it != _commands.end(); ++it)
Bobty 2:9d8793c23b46 25 delete (*it);
Bobty 0:b5b4d07f7827 26 }
Bobty 0:b5b4d07f7827 27
Bobty 4:6afb3bbf20a4 28 bool RdWebServer::init(int port, DigitalOut* pStatusLed, char* pBaseWebFolder)
Bobty 0:b5b4d07f7827 29 {
Bobty 15:0865fa4b046a 30 // Settings
Bobty 0:b5b4d07f7827 31 _port = port;
Bobty 0:b5b4d07f7827 32 _pStatusLed = pStatusLed;
Bobty 4:6afb3bbf20a4 33 _pBaseWebFolder = pBaseWebFolder;
Bobty 0:b5b4d07f7827 34
Bobty 17:080f2bed8b36 35 // The sample web server on MBED site turns off blocking after the accept has happened
Bobty 17:080f2bed8b36 36 // I've tried this but it doesn't seem to yield a reliable server
Bobty 17:080f2bed8b36 37 _blockingOnAccept = true;
Bobty 17:080f2bed8b36 38 _blockingOnReceive = true;
Bobty 17:080f2bed8b36 39
Bobty 17:080f2bed8b36 40 // This is the same as the default in the socket.cpp file
Bobty 17:080f2bed8b36 41 _timeoutOnBlocking = 1500;
Bobty 17:080f2bed8b36 42
Bobty 17:080f2bed8b36 43 // Currently tested using close connection after send with a single file which works fine
Bobty 17:080f2bed8b36 44 // If closeConnAfterSend is set false then the socket connection remains open and only
Bobty 17:080f2bed8b36 45 // one client can access the server at a time
Bobty 17:080f2bed8b36 46 // Need to test with the closeConnAfterSend seetting true when trying to download multiple files
Bobty 17:080f2bed8b36 47 // for a website as previous experience would indicate that requests might be missed in this scenario
Bobty 17:080f2bed8b36 48 // although all other settings may not have been the same
Bobty 17:080f2bed8b36 49 _closeConnAfterSend = true;
Bobty 17:080f2bed8b36 50 _closeConnOnReceiveFail = true;
Bobty 17:080f2bed8b36 51
Bobty 15:0865fa4b046a 52 // Setup tcp socket
Bobty 15:0865fa4b046a 53 _serverSocket.set_blocking(true);
Bobty 15:0865fa4b046a 54 if(_serverSocket.bind(port)< 0)
Bobty 0:b5b4d07f7827 55 {
Bobty 11:cec51b430b20 56 RD_WARN("TCP server bind fail\n\r");
Bobty 0:b5b4d07f7827 57 return false;
Bobty 0:b5b4d07f7827 58 }
Bobty 15:0865fa4b046a 59 if(_serverSocket.listen(1) < 0)
Bobty 0:b5b4d07f7827 60 {
Bobty 11:cec51b430b20 61 RD_WARN("TCP server listen fail\n\r");
Bobty 0:b5b4d07f7827 62 return false;
Bobty 0:b5b4d07f7827 63 }
Bobty 15:0865fa4b046a 64 RD_INFO("TCP server is listening...\r\n");
Bobty 15:0865fa4b046a 65 _initOk = true;
Bobty 6:46285c519af2 66 return true;
Bobty 6:46285c519af2 67 }
Bobty 6:46285c519af2 68
Bobty 15:0865fa4b046a 69 void RdWebServer::run()
Bobty 15:0865fa4b046a 70 {
Bobty 15:0865fa4b046a 71 // Check initialised ok
Bobty 15:0865fa4b046a 72 if (!_initOk)
Bobty 15:0865fa4b046a 73 return;
Bobty 15:0865fa4b046a 74
Bobty 15:0865fa4b046a 75 // Start accepting connections
Bobty 15:0865fa4b046a 76 while (true)
Bobty 15:0865fa4b046a 77 {
Bobty 15:0865fa4b046a 78 TCPSocketConnection clientSocketConn;
Bobty 15:0865fa4b046a 79 // Accept connection if available
Bobty 15:0865fa4b046a 80 RD_INFO("Waiting for TCP connection\r\n");
Bobty 17:080f2bed8b36 81 clientSocketConn.set_blocking(_blockingOnAccept, _timeoutOnBlocking);
Bobty 15:0865fa4b046a 82 if(_serverSocket.accept(clientSocketConn)<0)
Bobty 15:0865fa4b046a 83 {
Bobty 15:0865fa4b046a 84 RD_WARN("TCP Socket failed to accept connection\n\r");
Bobty 15:0865fa4b046a 85 continue;
Bobty 15:0865fa4b046a 86 }
Bobty 15:0865fa4b046a 87
Bobty 15:0865fa4b046a 88 // Connection
Bobty 15:0865fa4b046a 89 RD_INFO("Connection from IP: %s\n\r", clientSocketConn.get_address());
Bobty 15:0865fa4b046a 90 if (_pStatusLed != NULL)
Bobty 15:0865fa4b046a 91 *_pStatusLed = true;
Bobty 15:0865fa4b046a 92
Bobty 15:0865fa4b046a 93 // While connected
Bobty 15:0865fa4b046a 94 bool forcedClosed = false;
Bobty 15:0865fa4b046a 95 while(clientSocketConn.is_connected() && !forcedClosed)
Bobty 15:0865fa4b046a 96 {
Bobty 15:0865fa4b046a 97 // Receive data
Bobty 17:080f2bed8b36 98 clientSocketConn.set_blocking(_blockingOnReceive, _timeoutOnBlocking);
Bobty 15:0865fa4b046a 99 int rxLen = clientSocketConn.receive(_buffer, HTTPD_MAX_REQ_LENGTH);
Bobty 15:0865fa4b046a 100 if (rxLen == -1)
Bobty 15:0865fa4b046a 101 {
Bobty 15:0865fa4b046a 102 RD_DBG("clientSocketConn.receive() returned %d\r\n", rxLen);
Bobty 17:080f2bed8b36 103 if (_closeConnOnReceiveFail)
Bobty 15:0865fa4b046a 104 {
Bobty 15:0865fa4b046a 105 int closeRet = clientSocketConn.close();
Bobty 15:0865fa4b046a 106 RD_DBG("Failed receive connection close() ret %d is connected %d\r\n", closeRet, clientSocketConn.is_connected());
Bobty 15:0865fa4b046a 107 forcedClosed = true;
Bobty 15:0865fa4b046a 108 }
Bobty 15:0865fa4b046a 109 continue;
Bobty 15:0865fa4b046a 110 }
Bobty 15:0865fa4b046a 111 if (rxLen == 0)
Bobty 15:0865fa4b046a 112 {
Bobty 16:0248bbfdb6c1 113 RD_DBG("clientSocketConn.receive() returned %d - ignoring - is connected %d\r\n", rxLen, clientSocketConn.is_connected());
Bobty 15:0865fa4b046a 114 continue;
Bobty 15:0865fa4b046a 115 }
Bobty 15:0865fa4b046a 116 if (rxLen > HTTPD_MAX_REQ_LENGTH)
Bobty 15:0865fa4b046a 117 {
Bobty 15:0865fa4b046a 118 RD_DBG("clientSocketConn.receive() returned %d - too long\r\n", rxLen);
Bobty 17:080f2bed8b36 119 formHTTPHeader("413 Request Entity Too Large", "text/plain", 0);
Bobty 17:080f2bed8b36 120 // sprintf(_httpHeader,"HTTP/1.1 413 Request Entity Too Large \r\nContent-Type: text\r\nContent-Length: 0\r\n%s\r\n", closeConnAfterSend ? closeConnStr : "");
Bobty 17:080f2bed8b36 121 int sentRet = clientSocketConn.send(_httpHeader,strlen(_httpHeader));
Bobty 15:0865fa4b046a 122 continue;
Bobty 15:0865fa4b046a 123 }
Bobty 15:0865fa4b046a 124
Bobty 15:0865fa4b046a 125 RD_DBG("Received len %d\r\n", rxLen);
Bobty 15:0865fa4b046a 126 _buffer[rxLen] = '\0';
Bobty 15:0865fa4b046a 127 RD_DBG("%s\r\n", _buffer);
Bobty 15:0865fa4b046a 128
Bobty 15:0865fa4b046a 129 // Send a response
Bobty 17:080f2bed8b36 130 // char* content = "HELLO\r\n";
Bobty 17:080f2bed8b36 131 // int sz = strlen(content);
Bobty 17:080f2bed8b36 132 // 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 17:080f2bed8b36 133 // int sentRet = clientSocketConn.send(_httpHeader,strlen(_httpHeader));
Bobty 17:080f2bed8b36 134 // int sentRet2 = clientSocketConn.send(content, strlen(content));
Bobty 17:080f2bed8b36 135 // RD_DBG("Sent %s header ret %d content ret %d now connected %d\r\n", content, sentRet, sentRet2, clientSocketConn.is_connected());
Bobty 17:080f2bed8b36 136
Bobty 17:080f2bed8b36 137 // Handle received message
Bobty 17:080f2bed8b36 138 if (handleReceivedHttp(clientSocketConn))
Bobty 17:080f2bed8b36 139 {
Bobty 17:080f2bed8b36 140 // OK
Bobty 17:080f2bed8b36 141 }
Bobty 17:080f2bed8b36 142 else
Bobty 17:080f2bed8b36 143 {
Bobty 17:080f2bed8b36 144 // FAIL
Bobty 17:080f2bed8b36 145 }
Bobty 15:0865fa4b046a 146
Bobty 17:080f2bed8b36 147 // Close connection if required
Bobty 17:080f2bed8b36 148 if (_closeConnAfterSend)
Bobty 15:0865fa4b046a 149 {
Bobty 15:0865fa4b046a 150 int closeRet = clientSocketConn.close();
Bobty 16:0248bbfdb6c1 151 RD_DBG("After send connection close() ret %d is connected %d\r\n", closeRet, clientSocketConn.is_connected());
Bobty 16:0248bbfdb6c1 152 forcedClosed = true;
Bobty 15:0865fa4b046a 153 }
Bobty 15:0865fa4b046a 154 }
Bobty 15:0865fa4b046a 155 }
Bobty 15:0865fa4b046a 156 }
Bobty 15:0865fa4b046a 157
Bobty 15:0865fa4b046a 158 // connectLimitTimer.reset();
Bobty 15:0865fa4b046a 159 // connectLimitTimer.start();
Bobty 15:0865fa4b046a 160 // while(true)
Bobty 15:0865fa4b046a 161 // {
Bobty 15:0865fa4b046a 162 // // Check connection timer - 10 seconds timeout on HTTP operation
Bobty 15:0865fa4b046a 163 // if (connectLimitTimer.read() >= 10)
Bobty 15:0865fa4b046a 164 // {
Bobty 15:0865fa4b046a 165 // RD_WARN("Connection timed out\n\r");
Bobty 15:0865fa4b046a 166 // break;
Bobty 15:0865fa4b046a 167 // }
Bobty 15:0865fa4b046a 168 // // Get received data
Bobty 15:0865fa4b046a 169 // int rxLen = clientSocketConn.receive(_buffer, HTTPD_MAX_REQ_LENGTH);
Bobty 15:0865fa4b046a 170 // if (rxLen == -1)
Bobty 15:0865fa4b046a 171 // {
Bobty 15:0865fa4b046a 172 // RD_WARN("Nothing received\n\r");
Bobty 15:0865fa4b046a 173 // continue;
Bobty 15:0865fa4b046a 174 // }
Bobty 15:0865fa4b046a 175 // else if (rxLen == 0)
Bobty 15:0865fa4b046a 176 // {
Bobty 15:0865fa4b046a 177 // RD_WARN("received buffer is empty.\n\r");
Bobty 15:0865fa4b046a 178 // break;
Bobty 15:0865fa4b046a 179 // }
Bobty 15:0865fa4b046a 180 // else if (rxLen > HTTPD_MAX_REQ_LENGTH)
Bobty 15:0865fa4b046a 181 // {
Bobty 15:0865fa4b046a 182 // sprintf(_httpHeader,"HTTP/1.1 413 Request Entity Too Large \r\nContent-Type: text\r\nConnection: Close\r\n\r\n");
Bobty 17:080f2bed8b36 183 // clientSocketConn.send(_httpHeader,strlen(_httpHeader));
Bobty 17:080f2bed8b36 184 // clientSocketConn.send(_buffer, rxLen);
Bobty 15:0865fa4b046a 185 // break;
Bobty 15:0865fa4b046a 186 // }
Bobty 15:0865fa4b046a 187 // _buffer[rxLen] = '\0';
Bobty 15:0865fa4b046a 188 //
Bobty 15:0865fa4b046a 189 // // Handle buffer
Bobty 15:0865fa4b046a 190 // if (handleReceivedHttp(clientSocketConn))
Bobty 15:0865fa4b046a 191 // {
Bobty 15:0865fa4b046a 192 // break;
Bobty 15:0865fa4b046a 193 // }
Bobty 15:0865fa4b046a 194 // else
Bobty 15:0865fa4b046a 195 // {
Bobty 15:0865fa4b046a 196 // connectLimitTimer.reset();
Bobty 15:0865fa4b046a 197 // connectLimitTimer.start();
Bobty 15:0865fa4b046a 198 // }
Bobty 15:0865fa4b046a 199 // }
Bobty 15:0865fa4b046a 200 //
Bobty 15:0865fa4b046a 201 // // Connection now closed
Bobty 15:0865fa4b046a 202 // RD_INFO("Connection closed ...\r\n");
Bobty 15:0865fa4b046a 203 // clientSocketConn.close();
Bobty 15:0865fa4b046a 204 // if (_pStatusLed != NULL)
Bobty 15:0865fa4b046a 205 // *_pStatusLed = false;
Bobty 15:0865fa4b046a 206 // }
Bobty 15:0865fa4b046a 207 //
Bobty 15:0865fa4b046a 208 // }
Bobty 15:0865fa4b046a 209 //}
Bobty 15:0865fa4b046a 210 //
Bobty 15:0865fa4b046a 211 bool RdWebServer::handleReceivedHttp(TCPSocketConnection &clientSocketConn)
Bobty 6:46285c519af2 212 {
Bobty 17:080f2bed8b36 213 bool handledOk = false;
Bobty 11:cec51b430b20 214 RD_DBG("Received Data: %d\n\r\n\r%.*s\n\r",strlen(_buffer),strlen(_buffer),_buffer);
Bobty 7:fe7c33f7fbb8 215 int method = METHOD_OTHER;
Bobty 6:46285c519af2 216 if (strncmp(_buffer, "GET ", 4) == 0)
Bobty 7:fe7c33f7fbb8 217 method = METHOD_GET;
Bobty 7:fe7c33f7fbb8 218 if (strncmp(_buffer, "POST", 4) == 0)
Bobty 7:fe7c33f7fbb8 219 method = METHOD_POST;
Bobty 7:fe7c33f7fbb8 220
Bobty 7:fe7c33f7fbb8 221 char cmdStr[MAX_CMDSTR_LEN];
Bobty 7:fe7c33f7fbb8 222 char argStr[MAX_ARGSTR_LEN];
Bobty 7:fe7c33f7fbb8 223 if (extractCmdArgs(_buffer+3, cmdStr, MAX_CMDSTR_LEN, argStr, MAX_ARGSTR_LEN))
Bobty 6:46285c519af2 224 {
Bobty 11:cec51b430b20 225 RD_DBG("CmdStr %s\n\r", cmdStr);
Bobty 11:cec51b430b20 226 RD_DBG("ArgStr %s\n\r", argStr);
Bobty 7:fe7c33f7fbb8 227 bool cmdFound = false;
Bobty 7:fe7c33f7fbb8 228 for (std::vector<RdWebServerCmdDef*>::iterator it = _commands.begin() ; it != _commands.end(); ++it)
Bobty 6:46285c519af2 229 {
Bobty 11:cec51b430b20 230 RD_DBG("Testing <<%s>> with <<%s>>\r\n", (*it)->_pCmdStr, cmdStr);
Bobty 7:fe7c33f7fbb8 231 if (strcasecmp((*it)->_pCmdStr, cmdStr) == 0)
Bobty 7:fe7c33f7fbb8 232 {
Bobty 11:cec51b430b20 233 RD_DBG("FoundCmd <%s> Type %d\n\r", cmdStr, (*it)->_cmdType);
Bobty 7:fe7c33f7fbb8 234 cmdFound = true;
Bobty 7:fe7c33f7fbb8 235 if ((*it)->_cmdType == RdWebServerCmdDef::CMD_CALLBACK)
Bobty 7:fe7c33f7fbb8 236 {
Bobty 7:fe7c33f7fbb8 237 char* respStr = ((*it)->_callback)(method, cmdStr, argStr);
Bobty 17:080f2bed8b36 238 clientSocketConn.send(respStr, strlen(respStr));
Bobty 6:46285c519af2 239 }
Bobty 17:080f2bed8b36 240 else if ( ((*it)->_cmdType == RdWebServerCmdDef::CMD_LOCALFILE) ||
Bobty 17:080f2bed8b36 241 ((*it)->_cmdType == RdWebServerCmdDef::CMD_SDORUSBFILE) )
Bobty 7:fe7c33f7fbb8 242 {
Bobty 17:080f2bed8b36 243 char combinedFileName[MAX_FILENAME_LEN];
Bobty 17:080f2bed8b36 244 strcpy(combinedFileName, (*it)->_substFileName);
Bobty 17:080f2bed8b36 245 if (strlen(combinedFileName) == 0)
Bobty 17:080f2bed8b36 246 strcpy(combinedFileName, cmdStr);
Bobty 17:080f2bed8b36 247 else if (combinedFileName[strlen(combinedFileName)-1] == '*')
Bobty 17:080f2bed8b36 248 strcpy(combinedFileName+strlen(combinedFileName)-1, argStr);
Bobty 17:080f2bed8b36 249 if ((*it)->_cmdType == RdWebServerCmdDef::CMD_LOCALFILE)
Bobty 17:080f2bed8b36 250 handledOk = handleLocalFileRequest(combinedFileName, argStr, clientSocketConn, (*it)->_bCacheIfPossible);
Bobty 7:fe7c33f7fbb8 251 else
Bobty 17:080f2bed8b36 252 handledOk = handleSDFileRequest(combinedFileName, argStr, clientSocketConn);
Bobty 17:080f2bed8b36 253
Bobty 7:fe7c33f7fbb8 254 }
Bobty 7:fe7c33f7fbb8 255 break;
Bobty 6:46285c519af2 256 }
Bobty 6:46285c519af2 257 }
Bobty 7:fe7c33f7fbb8 258 // If command not found see if it is a local file
Bobty 7:fe7c33f7fbb8 259 if (!cmdFound)
Bobty 17:080f2bed8b36 260 {
Bobty 17:080f2bed8b36 261 char combinedFileName[MAX_FILENAME_LEN];
Bobty 17:080f2bed8b36 262 strcpy(combinedFileName, cmdStr);
Bobty 17:080f2bed8b36 263 strcat(combinedFileName, "/");
Bobty 17:080f2bed8b36 264 strcat(combinedFileName, argStr);
Bobty 17:080f2bed8b36 265 handledOk = handleSDFileRequest(cmdStr, argStr, clientSocketConn);
Bobty 17:080f2bed8b36 266 }
Bobty 6:46285c519af2 267 }
Bobty 17:080f2bed8b36 268 return handledOk;
Bobty 6:46285c519af2 269 }
Bobty 6:46285c519af2 270
Bobty 6:46285c519af2 271 void RdWebServer::addCommand(char* pCmdStr, int cmdType, CmdCallbackType callback, char* substFileName, bool cacheIfPossible)
Bobty 6:46285c519af2 272 {
Bobty 6:46285c519af2 273 _commands.push_back(new RdWebServerCmdDef(pCmdStr, cmdType, callback, substFileName, cacheIfPossible));
Bobty 6:46285c519af2 274 }
Bobty 6:46285c519af2 275
Bobty 17:080f2bed8b36 276 void RdWebServer::formHTTPHeader(const char* rsltCode, const char* contentType, int contentLen)
Bobty 17:080f2bed8b36 277 {
Bobty 17:080f2bed8b36 278 const char* closeConnStr = "\r\nConnection: Close";
Bobty 17:080f2bed8b36 279 if(contentLen != -1)
Bobty 17:080f2bed8b36 280 sprintf(_httpHeader, "HTTP/1.1 %s\r\nContent-Type: %s\r\nContent-Length: %d%s\r\n\r\n", rsltCode, contentType, contentLen, _closeConnAfterSend ? closeConnStr : "");
Bobty 17:080f2bed8b36 281 else
Bobty 17:080f2bed8b36 282 sprintf(_httpHeader, "HTTP/1.1 %s\r\nContent-Type: %s%s\r\n\r\n", rsltCode, contentType, _closeConnAfterSend ? closeConnStr : "");
Bobty 17:080f2bed8b36 283 }
Bobty 17:080f2bed8b36 284
Bobty 17:080f2bed8b36 285 char* getMimeTypeStr(char* filename)
Bobty 6:46285c519af2 286 {
Bobty 17:080f2bed8b36 287 char* mimeType = "text/plain";
Bobty 17:080f2bed8b36 288 char *pDot = strrchr(filename, '.');
Bobty 17:080f2bed8b36 289 if (pDot && (!strcmp(pDot, ".html") || !strcmp(pDot, ".htm")))
Bobty 17:080f2bed8b36 290 mimeType = "text/html";
Bobty 17:080f2bed8b36 291 else if (pDot && !strcmp(pDot, ".css"))
Bobty 17:080f2bed8b36 292 mimeType = "text/css";
Bobty 17:080f2bed8b36 293 else if (pDot && !strcmp(pDot, ".js"))
Bobty 17:080f2bed8b36 294 mimeType = "application/javascript";
Bobty 17:080f2bed8b36 295 else if (pDot && !strcmp(pDot, ".png"))
Bobty 17:080f2bed8b36 296 mimeType = "image/png";
Bobty 17:080f2bed8b36 297 else if (pDot && (!strcmp(pDot, ".jpeg") || !strcmp(pDot, ".jpeg")))
Bobty 17:080f2bed8b36 298 mimeType = "image/jpeg";
Bobty 17:080f2bed8b36 299 return mimeType;
Bobty 17:080f2bed8b36 300 }
Bobty 17:080f2bed8b36 301
Bobty 17:080f2bed8b36 302 bool RdWebServer::handleSDFileRequest(char* inFileName, char* argStr, TCPSocketConnection &clientSocketConn)
Bobty 17:080f2bed8b36 303 {
Bobty 17:080f2bed8b36 304 bool handledOk = false;
Bobty 6:46285c519af2 305 const int HTTPD_MAX_FNAME_LENGTH = 127;
Bobty 6:46285c519af2 306 char filename[HTTPD_MAX_FNAME_LENGTH+1];
Bobty 6:46285c519af2 307
Bobty 11:cec51b430b20 308 RD_INFO("Requesting file %s\n\r", inFileName);
Bobty 6:46285c519af2 309
Bobty 12:c14ffd4ec125 310 #ifdef SUPPORT_FOLDER_VIEW
Bobty 10:b4b9d4d5e5be 311 if ((strlen(inFileName) > 0) && (inFileName[strlen(inFileName)-1] == '/'))
Bobty 6:46285c519af2 312 {
Bobty 11:cec51b430b20 313 RD_INFO("Request directory %s%s\r\n", _pBaseWebFolder, inFileName);
Bobty 6:46285c519af2 314 sprintf(filename, "%s%s", _pBaseWebFolder, inFileName);
Bobty 6:46285c519af2 315 DIR *d = opendir(filename);
Bobty 11:cec51b430b20 316 if (d != NULL)
Bobty 11:cec51b430b20 317 {
Bobty 17:080f2bed8b36 318 formHTTPHeader("200 OK", "text/html", -1);
Bobty 17:080f2bed8b36 319 clientSocketConn.send(_httpHeader,strlen(_httpHeader));
Bobty 17:080f2bed8b36 320 sprintf(_httpHeader,"<html><head><title>Directory Listing</title></head><body><h1>%s</h1><ul>", inFileName);
Bobty 17:080f2bed8b36 321 clientSocketConn.send(_httpHeader,strlen(_httpHeader));
Bobty 6:46285c519af2 322 struct dirent *p;
Bobty 11:cec51b430b20 323 while((p = readdir(d)) != NULL)
Bobty 11:cec51b430b20 324 {
Bobty 11:cec51b430b20 325 RD_INFO("%s\r\n", p->d_name);
Bobty 17:080f2bed8b36 326 sprintf(_httpHeader,"<li>%s</li>", p->d_name);
Bobty 17:080f2bed8b36 327 clientSocketConn.send(_httpHeader,strlen(_httpHeader));
Bobty 6:46285c519af2 328 }
Bobty 6:46285c519af2 329 }
Bobty 6:46285c519af2 330 closedir(d);
Bobty 11:cec51b430b20 331 RD_DBG("Directory closed\n");
Bobty 17:080f2bed8b36 332 sprintf(_httpHeader,"</ul></body></html>");
Bobty 17:080f2bed8b36 333 clientSocketConn.send(_httpHeader,strlen(_httpHeader));
Bobty 17:080f2bed8b36 334 handledOk = true;
Bobty 6:46285c519af2 335 }
Bobty 6:46285c519af2 336 else
Bobty 12:c14ffd4ec125 337 #endif
Bobty 6:46285c519af2 338 {
Bobty 6:46285c519af2 339 sprintf(filename, "%s%s", _pBaseWebFolder, inFileName);
Bobty 11:cec51b430b20 340 RD_INFO("Filename %s\r\n", filename);
Bobty 6:46285c519af2 341
Bobty 6:46285c519af2 342 FILE* fp = fopen(filename, "r");
Bobty 6:46285c519af2 343 if (fp == NULL)
Bobty 6:46285c519af2 344 {
Bobty 11:cec51b430b20 345 RD_WARN("Filename %s not found\r\n", filename);
Bobty 17:080f2bed8b36 346 formHTTPHeader("404 Not Found", "text/plain", 0);
Bobty 17:080f2bed8b36 347 clientSocketConn.send(_httpHeader,strlen(_httpHeader));
Bobty 17:080f2bed8b36 348 handledOk = true;
Bobty 6:46285c519af2 349 }
Bobty 6:46285c519af2 350 else
Bobty 6:46285c519af2 351 {
Bobty 11:cec51b430b20 352 RD_INFO("Sending file %s\r\n", filename);
Bobty 17:080f2bed8b36 353 // Find file length
Bobty 14:4b83670854f0 354 fseek(fp, 0L, SEEK_END);
Bobty 14:4b83670854f0 355 int sz = ftell(fp);
Bobty 14:4b83670854f0 356 fseek(fp, 0L, SEEK_SET);
Bobty 17:080f2bed8b36 357 // Get mime type
Bobty 17:080f2bed8b36 358 char* mimeType = getMimeTypeStr(filename);
Bobty 14:4b83670854f0 359 RD_INFO("MIME TYPE %s", mimeType);
Bobty 17:080f2bed8b36 360 // Form header
Bobty 17:080f2bed8b36 361 formHTTPHeader("200 OK", mimeType, sz);
Bobty 17:080f2bed8b36 362 clientSocketConn.send(_httpHeader,strlen(_httpHeader));
Bobty 14:4b83670854f0 363 // Read file in blocks and send
Bobty 6:46285c519af2 364 int rdCnt = 0;
Bobty 6:46285c519af2 365 char fileBuf[1024];
Bobty 6:46285c519af2 366 while ((rdCnt = fread(fileBuf, sizeof( char ), 1024, fp)) == 1024)
Bobty 6:46285c519af2 367 {
Bobty 17:080f2bed8b36 368 clientSocketConn.send(fileBuf, rdCnt);
Bobty 6:46285c519af2 369 }
Bobty 17:080f2bed8b36 370 clientSocketConn.send(fileBuf, rdCnt);
Bobty 6:46285c519af2 371 fclose(fp);
Bobty 17:080f2bed8b36 372 handledOk = true;
Bobty 6:46285c519af2 373 }
Bobty 6:46285c519af2 374 }
Bobty 17:080f2bed8b36 375 return handledOk;
Bobty 6:46285c519af2 376 }
Bobty 6:46285c519af2 377
Bobty 15:0865fa4b046a 378 #ifdef SUPPORT_LOCAL_FILE_CACHE
Bobty 15:0865fa4b046a 379
Bobty 17:080f2bed8b36 380 void RdWebServer::sendFromCache(RdFileCacheEntry* pCacheEntry, TCPSocketConnection &clientSocketConn)
Bobty 6:46285c519af2 381 {
Bobty 11:cec51b430b20 382 RD_INFO("Sending file %s from cache %d bytes\r\n", pCacheEntry->_fileName, pCacheEntry->_nFileLen);
Bobty 17:080f2bed8b36 383 // Get mime type
Bobty 17:080f2bed8b36 384 char* mimeType = getMimeTypeStr(pCacheEntry->_fileName);
Bobty 17:080f2bed8b36 385 RD_INFO("MIME TYPE %s", mimeType);
Bobty 17:080f2bed8b36 386 // Form header
Bobty 17:080f2bed8b36 387 formHTTPHeader("200 OK", mimeType, pCacheEntry->_nFileLen);
Bobty 17:080f2bed8b36 388 clientSocketConn.send(_httpHeader,strlen(_httpHeader));
Bobty 6:46285c519af2 389 char* pMem = pCacheEntry->_pFileContent;
Bobty 6:46285c519af2 390 int nLenLeft = pCacheEntry->_nFileLen;
Bobty 6:46285c519af2 391 int blkSize = 2048;
Bobty 6:46285c519af2 392 while(nLenLeft > 0)
Bobty 6:46285c519af2 393 {
Bobty 6:46285c519af2 394 if (blkSize > nLenLeft)
Bobty 6:46285c519af2 395 blkSize = nLenLeft;
Bobty 17:080f2bed8b36 396 clientSocketConn.send(pMem, blkSize);
Bobty 6:46285c519af2 397 pMem += blkSize;
Bobty 6:46285c519af2 398 nLenLeft -= blkSize;
Bobty 6:46285c519af2 399 }
Bobty 6:46285c519af2 400 }
Bobty 15:0865fa4b046a 401 #endif
Bobty 6:46285c519af2 402
Bobty 17:080f2bed8b36 403 bool RdWebServer::handleLocalFileRequest(char* inFileName, char* argStr, TCPSocketConnection &clientSocketConn, bool bCacheIfPossible)
Bobty 6:46285c519af2 404 {
Bobty 12:c14ffd4ec125 405
Bobty 12:c14ffd4ec125 406 #ifdef SUPPORT_LOCAL_FILESYSTEM
Bobty 12:c14ffd4ec125 407
Bobty 6:46285c519af2 408 const int HTTPD_MAX_FNAME_LENGTH = 127;
Bobty 6:46285c519af2 409 char localFilename[HTTPD_MAX_FNAME_LENGTH+1];
Bobty 6:46285c519af2 410 char reqFileNameStr[HTTPD_MAX_FNAME_LENGTH+1];
Bobty 6:46285c519af2 411
Bobty 11:cec51b430b20 412 RD_INFO("Requesting local file %s\n\r", inFileName);
Bobty 6:46285c519af2 413 sprintf(reqFileNameStr, "/%s", inFileName);
Bobty 6:46285c519af2 414 sprintf(localFilename, "/local/%s", inFileName);
Bobty 6:46285c519af2 415
Bobty 6:46285c519af2 416 if (bCacheIfPossible)
Bobty 6:46285c519af2 417 {
Bobty 6:46285c519af2 418 // Check if file already cached
Bobty 6:46285c519af2 419 bool bTryToCache = true;
Bobty 6:46285c519af2 420 for (std::vector<RdFileCacheEntry*>::iterator it = _cachedFiles.begin() ; it != _cachedFiles.end(); ++it)
Bobty 6:46285c519af2 421 {
Bobty 6:46285c519af2 422 if (strcmp(inFileName, (*it)->_fileName) == 0)
Bobty 6:46285c519af2 423 {
Bobty 6:46285c519af2 424 if ((*it)->_bCacheValid)
Bobty 6:46285c519af2 425 {
Bobty 15:0865fa4b046a 426 sendFromCache(*it, clientSocketConn, httpHeader);
Bobty 17:080f2bed8b36 427 return true;
Bobty 6:46285c519af2 428 }
Bobty 6:46285c519af2 429 bTryToCache = false; // don't try to cache as cacheing must have already failed
Bobty 6:46285c519af2 430 }
Bobty 6:46285c519af2 431 }
Bobty 6:46285c519af2 432
Bobty 6:46285c519af2 433 // See if we can cache the file
Bobty 6:46285c519af2 434 if (bTryToCache)
Bobty 6:46285c519af2 435 {
Bobty 6:46285c519af2 436 RdFileCacheEntry* pCacheEntry = new RdFileCacheEntry(inFileName);
Bobty 6:46285c519af2 437 if (pCacheEntry)
Bobty 6:46285c519af2 438 {
Bobty 6:46285c519af2 439 bool bCacheSuccess = pCacheEntry->readLocalFileIntoCache(localFilename);
Bobty 6:46285c519af2 440 // 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 441 _cachedFiles.push_back(pCacheEntry);
Bobty 6:46285c519af2 442 if (bCacheSuccess)
Bobty 6:46285c519af2 443 {
Bobty 15:0865fa4b046a 444 sendFromCache(pCacheEntry, clientSocketConn, httpHeader);
Bobty 17:080f2bed8b36 445 return true;
Bobty 6:46285c519af2 446 }
Bobty 6:46285c519af2 447 }
Bobty 6:46285c519af2 448 }
Bobty 6:46285c519af2 449 }
Bobty 6:46285c519af2 450
Bobty 6:46285c519af2 451 LocalFileSystem local("local");
Bobty 6:46285c519af2 452
Bobty 6:46285c519af2 453 FILE* fp = fopen(localFilename, "r");
Bobty 6:46285c519af2 454 if (fp == NULL)
Bobty 6:46285c519af2 455 {
Bobty 11:cec51b430b20 456 RD_WARN("Local file %s not found\r\n", localFilename);
Bobty 17:080f2bed8b36 457 formHTTPHeader("404 Not Found", "text/plain", 0);
Bobty 17:080f2bed8b36 458 clientSocketConn.send(_httpHeader,strlen(_httpHeader));
Bobty 17:080f2bed8b36 459 return true;
Bobty 6:46285c519af2 460 }
Bobty 6:46285c519af2 461 else
Bobty 6:46285c519af2 462 {
Bobty 11:cec51b430b20 463 RD_INFO("Sending file %s from disk\r\n", localFilename);
Bobty 17:080f2bed8b36 464 // Find file length
Bobty 17:080f2bed8b36 465 fseek(fp, 0L, SEEK_END);
Bobty 17:080f2bed8b36 466 int sz = ftell(fp);
Bobty 17:080f2bed8b36 467 fseek(fp, 0L, SEEK_SET);
Bobty 17:080f2bed8b36 468 // Get mime type
Bobty 17:080f2bed8b36 469 char* mimeType = getMimeTypeStr(localFilename);
Bobty 17:080f2bed8b36 470 RD_INFO("MIME TYPE %s", mimeType);
Bobty 17:080f2bed8b36 471 // Form header
Bobty 17:080f2bed8b36 472 formHTTPHeader("200 OK", mimeType, sz);
Bobty 17:080f2bed8b36 473 clientSocketConn.send(_httpHeader,strlen(_httpHeader));
Bobty 6:46285c519af2 474 int rdCnt = 0;
Bobty 17:080f2bed8b36 475 while ((rdCnt = fread(_httpHeader, sizeof( char ), sizeof(_httpHeader), fp)) == sizeof(_httpHeader))
Bobty 6:46285c519af2 476 {
Bobty 17:080f2bed8b36 477 clientSocketConn.send(_httpHeader, rdCnt);
Bobty 6:46285c519af2 478 }
Bobty 17:080f2bed8b36 479 if (rdCnt != 0)
Bobty 17:080f2bed8b36 480 clientSocketConn.send(_httpHeader, rdCnt);
Bobty 6:46285c519af2 481 fclose(fp);
Bobty 17:080f2bed8b36 482 return true;
Bobty 6:46285c519af2 483 }
Bobty 12:c14ffd4ec125 484
Bobty 12:c14ffd4ec125 485 #else
Bobty 12:c14ffd4ec125 486
Bobty 12:c14ffd4ec125 487 RD_WARN("Local file system not supported\r\n");
Bobty 17:080f2bed8b36 488 formHTTPHeader("404 Not Found", "text/plain", 0);
Bobty 17:080f2bed8b36 489 clientSocketConn.send(_httpHeader,strlen(_httpHeader));
Bobty 17:080f2bed8b36 490 return true;
Bobty 12:c14ffd4ec125 491
Bobty 12:c14ffd4ec125 492 #endif
Bobty 6:46285c519af2 493 }
Bobty 6:46285c519af2 494
Bobty 15:0865fa4b046a 495 #ifdef SUPPORT_LOCAL_FILE_CACHE
Bobty 15:0865fa4b046a 496
Bobty 6:46285c519af2 497 bool RdFileCacheEntry::readLocalFileIntoCache(char* fileName)
Bobty 6:46285c519af2 498 {
Bobty 12:c14ffd4ec125 499 #ifdef SUPPORT_LOCAL_FILESYSTEM
Bobty 12:c14ffd4ec125 500
Bobty 11:cec51b430b20 501 RD_INFO("Reading into cache %s\n\r", fileName);
Bobty 6:46285c519af2 502 LocalFileSystem local("local");
Bobty 6:46285c519af2 503 FILE* fp = fopen(fileName, "r");
Bobty 6:46285c519af2 504 if (fp == NULL)
Bobty 6:46285c519af2 505 {
Bobty 11:cec51b430b20 506 RD_WARN("Failed to open file\n\r");
Bobty 6:46285c519af2 507 return false;
Bobty 6:46285c519af2 508 }
Bobty 11:cec51b430b20 509 RD_DBG("Seeking\n\r");
Bobty 6:46285c519af2 510 fseek(fp, 0, SEEK_END);
Bobty 6:46285c519af2 511 _nFileLen = (int)ftell(fp);
Bobty 6:46285c519af2 512 _pFileContent = new char[_nFileLen];
Bobty 11:cec51b430b20 513 RD_DBG("Len %d Buf %08x\n\r", _nFileLen, _pFileContent);
Bobty 6:46285c519af2 514 if (!_pFileContent)
Bobty 6:46285c519af2 515 {
Bobty 11:cec51b430b20 516 RD_WARN("Failed to allocate %lu\n\r", _nFileLen);
Bobty 6:46285c519af2 517 fclose(fp);
Bobty 6:46285c519af2 518 return false;
Bobty 6:46285c519af2 519 }
Bobty 11:cec51b430b20 520 RD_DBG("Allocated\n\r");
Bobty 6:46285c519af2 521 memset(_pFileContent, 0, _nFileLen);
Bobty 6:46285c519af2 522 fseek(fp, 0, SEEK_SET);
Bobty 6:46285c519af2 523 char* pMem = _pFileContent;
Bobty 6:46285c519af2 524 char fileBuf[100];
Bobty 6:46285c519af2 525 int totCnt = 0;
Bobty 6:46285c519af2 526 int rdCnt = 0;
Bobty 11:cec51b430b20 527 RD_DBG("Reading\n\r");
Bobty 6:46285c519af2 528 while (true)
Bobty 6:46285c519af2 529 {
Bobty 6:46285c519af2 530 int toRead = _nFileLen - totCnt;
Bobty 6:46285c519af2 531 if (toRead > sizeof(fileBuf))
Bobty 6:46285c519af2 532 toRead = sizeof(fileBuf);
Bobty 6:46285c519af2 533 if (toRead <= 0)
Bobty 6:46285c519af2 534 break;
Bobty 6:46285c519af2 535 rdCnt = fread(fileBuf, sizeof(char), toRead, fp);
Bobty 6:46285c519af2 536 if (rdCnt <= 0)
Bobty 6:46285c519af2 537 break;
Bobty 11:cec51b430b20 538 RD_DBG("Read %d tot %d of %d\n\r", rdCnt, totCnt, _nFileLen);
Bobty 6:46285c519af2 539 memcpy(pMem, fileBuf, rdCnt);
Bobty 6:46285c519af2 540 pMem += rdCnt;
Bobty 6:46285c519af2 541 totCnt += rdCnt;
Bobty 6:46285c519af2 542 }
Bobty 11:cec51b430b20 543 RD_DBG("Done read\n\r");
Bobty 6:46285c519af2 544 fclose(fp);
Bobty 11:cec51b430b20 545 RD_DBG("Success in caching %d bytes (read %d)\n\r", _nFileLen, totCnt);
Bobty 6:46285c519af2 546 _bCacheValid = true;
Bobty 0:b5b4d07f7827 547 return true;
Bobty 12:c14ffd4ec125 548 #else
Bobty 12:c14ffd4ec125 549 return false;
Bobty 12:c14ffd4ec125 550 #endif
Bobty 0:b5b4d07f7827 551 }
Bobty 0:b5b4d07f7827 552
Bobty 15:0865fa4b046a 553 #endif
Bobty 15:0865fa4b046a 554
Bobty 1:75bb184de749 555 bool RdWebServer::extractCmdArgs(char* buf, char* pCmdStr, int maxCmdStrLen, char* pArgStr, int maxArgStrLen)
Bobty 1:75bb184de749 556 {
Bobty 1:75bb184de749 557 *pCmdStr = '\0';
Bobty 1:75bb184de749 558 *pArgStr = '\0';
Bobty 1:75bb184de749 559 int cmdStrLen = 0;
Bobty 1:75bb184de749 560 int argStrLen = 0;
Bobty 1:75bb184de749 561 if (buf == NULL)
Bobty 1:75bb184de749 562 return false;
Bobty 7:fe7c33f7fbb8 563 // Check for first slash
Bobty 1:75bb184de749 564 char* pSlash1 = strchr(buf, '/');
Bobty 1:75bb184de749 565 if (pSlash1 == NULL)
Bobty 1:75bb184de749 566 return false;
Bobty 1:75bb184de749 567 pSlash1++;
Bobty 7:fe7c33f7fbb8 568 // Extract command
Bobty 1:75bb184de749 569 while(*pSlash1)
Bobty 1:75bb184de749 570 {
Bobty 1:75bb184de749 571 if (cmdStrLen >= maxCmdStrLen-1)
Bobty 1:75bb184de749 572 break;
Bobty 7:fe7c33f7fbb8 573 if ((*pSlash1 == '/') || (*pSlash1 == ' ') || (*pSlash1 == '\n') || (*pSlash1 == '?') || (*pSlash1 == '&'))
Bobty 1:75bb184de749 574 break;
Bobty 1:75bb184de749 575 *pCmdStr++ = *pSlash1++;
Bobty 1:75bb184de749 576 *pCmdStr = '\0';
Bobty 1:75bb184de749 577 cmdStrLen++;
Bobty 1:75bb184de749 578 }
Bobty 1:75bb184de749 579 if ((*pSlash1 == '\0') || (*pSlash1 == ' ') || (*pSlash1 == '\n'))
Bobty 1:75bb184de749 580 return true;
Bobty 7:fe7c33f7fbb8 581 // Now args
Bobty 1:75bb184de749 582 *pSlash1++;
Bobty 1:75bb184de749 583 while(*pSlash1)
Bobty 1:75bb184de749 584 {
Bobty 1:75bb184de749 585 if (argStrLen >= maxArgStrLen-1)
Bobty 1:75bb184de749 586 break;
Bobty 1:75bb184de749 587 if ((*pSlash1 == ' ') || (*pSlash1 == '\n'))
Bobty 1:75bb184de749 588 break;
Bobty 1:75bb184de749 589 *pArgStr++ = *pSlash1++;
Bobty 1:75bb184de749 590 *pArgStr = '\0';
Bobty 1:75bb184de749 591 argStrLen++;
Bobty 1:75bb184de749 592 }
Bobty 1:75bb184de749 593 return true;
Bobty 1:75bb184de749 594 }