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:
Fri Feb 06 14:17:47 2015 +0000
Revision:
6:46285c519af2
Parent:
5:e6286b529d6b
Child:
7:fe7c33f7fbb8
Working with threaded server and SD card stack extended to stop crashes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Bobty 3:594136d34a32 1 /* RdWebServer.cpp
Bobty 3:594136d34a32 2 Rob Dobson 2013
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 0:b5b4d07f7827 7 #include "RdWebServer.h"
Bobty 0:b5b4d07f7827 8
Bobty 1:75bb184de749 9 #define MAX_CMDSTR_LEN 100
Bobty 1:75bb184de749 10 #define MAX_ARGSTR_LEN 100
Bobty 1:75bb184de749 11
Bobty 0:b5b4d07f7827 12 RdWebServer::RdWebServer()
Bobty 0:b5b4d07f7827 13 {
Bobty 0:b5b4d07f7827 14 _serverIsListening = false;
Bobty 0:b5b4d07f7827 15 _pStatusLed = NULL;
Bobty 0:b5b4d07f7827 16 }
Bobty 0:b5b4d07f7827 17
Bobty 0:b5b4d07f7827 18 RdWebServer::~RdWebServer()
Bobty 0:b5b4d07f7827 19 {
Bobty 2:9d8793c23b46 20 // Clean-up - probably never called as we're on a microcontroller!
Bobty 2:9d8793c23b46 21 for (std::vector<RdWebServerCmdDef*>::iterator it = _commands.begin() ; it != _commands.end(); ++it)
Bobty 2:9d8793c23b46 22 delete (*it);
Bobty 0:b5b4d07f7827 23 }
Bobty 0:b5b4d07f7827 24
Bobty 4:6afb3bbf20a4 25 bool RdWebServer::init(int port, DigitalOut* pStatusLed, char* pBaseWebFolder)
Bobty 0:b5b4d07f7827 26 {
Bobty 0:b5b4d07f7827 27 _port = port;
Bobty 0:b5b4d07f7827 28 _pStatusLed = pStatusLed;
Bobty 4:6afb3bbf20a4 29 _pBaseWebFolder = pBaseWebFolder;
Bobty 0:b5b4d07f7827 30
Bobty 6:46285c519af2 31 _socketSrv.set_blocking(true);
Bobty 0:b5b4d07f7827 32
Bobty 0:b5b4d07f7827 33 //setup tcp socket
Bobty 0:b5b4d07f7827 34 if(_socketSrv.bind(port)< 0)
Bobty 0:b5b4d07f7827 35 {
Bobty 6:46285c519af2 36 pc.printf("TCP server bind fail\n\r");
Bobty 0:b5b4d07f7827 37 return false;
Bobty 0:b5b4d07f7827 38 }
Bobty 0:b5b4d07f7827 39 else
Bobty 0:b5b4d07f7827 40 {
Bobty 6:46285c519af2 41 // pc.printf("TCP server bind success\n\r");
Bobty 0:b5b4d07f7827 42 _serverIsListening = true;
Bobty 0:b5b4d07f7827 43 }
Bobty 0:b5b4d07f7827 44
Bobty 0:b5b4d07f7827 45 if(_socketSrv.listen(1) < 0)
Bobty 0:b5b4d07f7827 46 {
Bobty 6:46285c519af2 47 pc.printf("TCP server listen fail\n\r");
Bobty 0:b5b4d07f7827 48 return false;
Bobty 0:b5b4d07f7827 49 }
Bobty 0:b5b4d07f7827 50 else
Bobty 0:b5b4d07f7827 51 {
Bobty 6:46285c519af2 52 pc.printf("TCP server is listening...\r\n");
Bobty 6:46285c519af2 53 }
Bobty 6:46285c519af2 54
Bobty 6:46285c519af2 55 return true;
Bobty 6:46285c519af2 56 }
Bobty 6:46285c519af2 57
Bobty 6:46285c519af2 58 void RdWebServer::handleReceivedHttp(TCPSocketConnection &client)
Bobty 6:46285c519af2 59 {
Bobty 6:46285c519af2 60 pc.printf("Received Data: %d\n\r\n\r%.*s\n\r",strlen(_buffer),strlen(_buffer),_buffer);
Bobty 6:46285c519af2 61 if (strncmp(_buffer, "GET ", 4) == 0)
Bobty 6:46285c519af2 62 {
Bobty 6:46285c519af2 63 pc.printf("GET request\n\r");
Bobty 6:46285c519af2 64 char cmdStr[MAX_CMDSTR_LEN];
Bobty 6:46285c519af2 65 char argStr[MAX_ARGSTR_LEN];
Bobty 6:46285c519af2 66 if (extractCmdArgs(_buffer+3, cmdStr, MAX_CMDSTR_LEN, argStr, MAX_ARGSTR_LEN))
Bobty 6:46285c519af2 67 {
Bobty 6:46285c519af2 68 pc.printf("CmdStr %s\n\r", cmdStr);
Bobty 6:46285c519af2 69 pc.printf("ArgStr %s\n\r", argStr);
Bobty 6:46285c519af2 70 bool cmdFound = false;
Bobty 6:46285c519af2 71 for (std::vector<RdWebServerCmdDef*>::iterator it = _commands.begin() ; it != _commands.end(); ++it)
Bobty 6:46285c519af2 72 {
Bobty 6:46285c519af2 73 // pc.printf("Testing <<%s>> with <<%s>>\r\n", (*it)->_pCmdStr, cmdStr);
Bobty 6:46285c519af2 74 if (strcasecmp((*it)->_pCmdStr, cmdStr) == 0)
Bobty 6:46285c519af2 75 {
Bobty 6:46285c519af2 76 pc.printf("FoundCmd <%s> Type %d\n\r", cmdStr, (*it)->_cmdType);
Bobty 6:46285c519af2 77 cmdFound = true;
Bobty 6:46285c519af2 78 if ((*it)->_cmdType == RdWebServerCmdDef::CMD_CALLBACK)
Bobty 6:46285c519af2 79 {
Bobty 6:46285c519af2 80 char* respStr = ((*it)->_callback)(cmdStr, argStr);
Bobty 6:46285c519af2 81 client.send(respStr, strlen(respStr));
Bobty 6:46285c519af2 82 }
Bobty 6:46285c519af2 83 else if ((*it)->_cmdType == RdWebServerCmdDef::CMD_LOCALFILE)
Bobty 6:46285c519af2 84 {
Bobty 6:46285c519af2 85 if ((*it)->_substFileName[0] != '\0')
Bobty 6:46285c519af2 86 handleLocalFileRequest((*it)->_substFileName, argStr, client, _httpHeader, (*it)->_bCacheIfPossible);
Bobty 6:46285c519af2 87 else
Bobty 6:46285c519af2 88 handleLocalFileRequest(cmdStr, argStr, client, _httpHeader, (*it)->_bCacheIfPossible);
Bobty 6:46285c519af2 89 }
Bobty 6:46285c519af2 90 else if ((*it)->_cmdType == RdWebServerCmdDef::CMD_SDORUSBFILE)
Bobty 6:46285c519af2 91 {
Bobty 6:46285c519af2 92 if ((*it)->_substFileName[0] != '\0')
Bobty 6:46285c519af2 93 handleSDFileRequest((*it)->_substFileName, argStr, client, _httpHeader);
Bobty 6:46285c519af2 94 else
Bobty 6:46285c519af2 95 handleSDFileRequest(cmdStr, argStr, client, _httpHeader);
Bobty 6:46285c519af2 96 }
Bobty 6:46285c519af2 97 break;
Bobty 6:46285c519af2 98 }
Bobty 6:46285c519af2 99 }
Bobty 6:46285c519af2 100 // If command not found see if it is a local file
Bobty 6:46285c519af2 101 if (!cmdFound)
Bobty 6:46285c519af2 102 handleSDFileRequest(cmdStr, argStr, client, _httpHeader);
Bobty 6:46285c519af2 103 }
Bobty 6:46285c519af2 104 }
Bobty 6:46285c519af2 105 }
Bobty 6:46285c519af2 106
Bobty 6:46285c519af2 107 void RdWebServer::run()
Bobty 6:46285c519af2 108 {
Bobty 6:46285c519af2 109
Bobty 6:46285c519af2 110 while (1)
Bobty 6:46285c519af2 111 {
Bobty 6:46285c519af2 112 TCPSocketConnection client;
Bobty 6:46285c519af2 113 pc.printf("Waiting for TCP connection\r\n");
Bobty 6:46285c519af2 114 if(_socketSrv.accept(client)<0)
Bobty 6:46285c519af2 115 {
Bobty 6:46285c519af2 116 pc.printf("TCP Socket failed to accept connection\n\r");
Bobty 6:46285c519af2 117 }
Bobty 6:46285c519af2 118 else
Bobty 6:46285c519af2 119 {
Bobty 6:46285c519af2 120 pc.printf("Connection from IP: %s\n\r",client.get_address());
Bobty 6:46285c519af2 121 if (_pStatusLed != NULL)
Bobty 6:46285c519af2 122 *_pStatusLed = true;
Bobty 6:46285c519af2 123
Bobty 6:46285c519af2 124 // Get received data
Bobty 6:46285c519af2 125 int rxLen = client.receive(_buffer, HTTPD_MAX_REQ_LENGTH);
Bobty 6:46285c519af2 126 if (rxLen == -1)
Bobty 6:46285c519af2 127 {
Bobty 6:46285c519af2 128 continue;
Bobty 6:46285c519af2 129 }
Bobty 6:46285c519af2 130 else if (rxLen == 0)
Bobty 6:46285c519af2 131 {
Bobty 6:46285c519af2 132 pc.printf("received buffer is empty.\n\r");
Bobty 6:46285c519af2 133 continue;
Bobty 6:46285c519af2 134 }
Bobty 6:46285c519af2 135 else if (rxLen > HTTPD_MAX_REQ_LENGTH)
Bobty 6:46285c519af2 136 {
Bobty 6:46285c519af2 137 sprintf(_httpHeader,"HTTP/1.1 413 Request Entity Too Large \r\nContent-Type: text\r\nConnection: Close\r\n\r\n");
Bobty 6:46285c519af2 138 client.send(_httpHeader,strlen(_httpHeader));
Bobty 6:46285c519af2 139 client.send(_buffer, rxLen);
Bobty 6:46285c519af2 140 continue;
Bobty 6:46285c519af2 141 }
Bobty 6:46285c519af2 142 _buffer[rxLen] = '\0';
Bobty 6:46285c519af2 143
Bobty 6:46285c519af2 144 // Handle buffer
Bobty 6:46285c519af2 145 handleReceivedHttp(client);
Bobty 6:46285c519af2 146 // const char * msg = "Hello World\n\r\n\r";
Bobty 6:46285c519af2 147 // 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));
Bobty 6:46285c519af2 148 // client.send(_buffer,strlen(_buffer));
Bobty 6:46285c519af2 149 // client.send( const_cast<char*>(msg), strlen(msg));
Bobty 6:46285c519af2 150 }
Bobty 0:b5b4d07f7827 151 }
Bobty 0:b5b4d07f7827 152
Bobty 6:46285c519af2 153 // while (1)
Bobty 6:46285c519af2 154 // {
Bobty 6:46285c519af2 155 // TCPSocketConnection Clnt;
Bobty 6:46285c519af2 156 // printf("Accept\n");
Bobty 6:46285c519af2 157 // int ret = _socketSrv.accept(Clnt);
Bobty 6:46285c519af2 158 // if ( ret < 0) {
Bobty 6:46285c519af2 159 // printf("no connection\n");
Bobty 6:46285c519af2 160 // } else {
Bobty 6:46285c519af2 161 // printf("Client (IP=%s) is connected\n", Clnt.get_address());
Bobty 6:46285c519af2 162 // char buff[512];
Bobty 6:46285c519af2 163 // int result = Clnt.receive(buff, 511);
Bobty 6:46285c519af2 164 // if(result < 0 )
Bobty 6:46285c519af2 165 // printf("The horror\n ");
Bobty 6:46285c519af2 166 // else {
Bobty 6:46285c519af2 167 // if(result >= 511)
Bobty 6:46285c519af2 168 // buff[511] = 0;
Bobty 6:46285c519af2 169 // else
Bobty 6:46285c519af2 170 // buff[result + 1] = 0;
Bobty 6:46285c519af2 171 //
Bobty 6:46285c519af2 172 // printf("%s\n",buff);
Bobty 6:46285c519af2 173 // }
Bobty 6:46285c519af2 174 // const char * msg = "Hello World\n\r\n\r";
Bobty 6:46285c519af2 175 // 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));
Bobty 6:46285c519af2 176 // Clnt.send(buff,strlen(buff));
Bobty 6:46285c519af2 177 // Clnt.send( const_cast<char*>(msg), strlen(msg));
Bobty 6:46285c519af2 178 // }
Bobty 6:46285c519af2 179 // }
Bobty 6:46285c519af2 180 //
Bobty 6:46285c519af2 181 // //listening for http GET request
Bobty 6:46285c519af2 182 // while (isListening())
Bobty 6:46285c519af2 183 // {
Bobty 6:46285c519af2 184 // //blocking mode(never timeout)
Bobty 6:46285c519af2 185 // if(_socketSrv.accept(client)<0)
Bobty 6:46285c519af2 186 // {
Bobty 6:46285c519af2 187 // pc.printf("TCP Socket failed to accept connection\n\r");
Bobty 6:46285c519af2 188 // }
Bobty 6:46285c519af2 189 // else
Bobty 6:46285c519af2 190 // {
Bobty 6:46285c519af2 191 // client.set_blocking(false, 1000);
Bobty 6:46285c519af2 192 // pc.printf("Connection from IP: %s\n\r",client.get_address());
Bobty 6:46285c519af2 193 // if (_pStatusLed != NULL)
Bobty 6:46285c519af2 194 // *_pStatusLed = true;
Bobty 6:46285c519af2 195 // Timer connectLimitTimer;
Bobty 6:46285c519af2 196 // connectLimitTimer.start();
Bobty 6:46285c519af2 197 //
Bobty 6:46285c519af2 198 // while(connectLimitTimer.read() < 5) // 5 seconds timeout on HTTP operation
Bobty 6:46285c519af2 199 // {
Bobty 6:46285c519af2 200 // int rxLen = client.receive(buffer, 1023);
Bobty 6:46285c519af2 201 // if (rxLen == -1)
Bobty 6:46285c519af2 202 // {
Bobty 6:46285c519af2 203 // continue;
Bobty 6:46285c519af2 204 // }
Bobty 6:46285c519af2 205 // else if (rxLen == 0)
Bobty 6:46285c519af2 206 // {
Bobty 6:46285c519af2 207 // pc.printf("received buffer is empty.\n\r");
Bobty 6:46285c519af2 208 // break;
Bobty 6:46285c519af2 209 // }
Bobty 6:46285c519af2 210 // else if (rxLen >= 1024)
Bobty 6:46285c519af2 211 // {
Bobty 6:46285c519af2 212 // sprintf(httpHeader,"HTTP/1.1 413 Request Entity Too Large \r\nContent-Type: text\r\nConnection: Close\r\n\r\n");
Bobty 6:46285c519af2 213 // client.send(httpHeader,strlen(httpHeader));
Bobty 6:46285c519af2 214 // client.send(buffer, rxLen);
Bobty 6:46285c519af2 215 // break;
Bobty 6:46285c519af2 216 // }
Bobty 6:46285c519af2 217 // buffer[rxLen] = '\0';
Bobty 6:46285c519af2 218 //// pc.printf("Received Data: %d\n\r\n\r%.*s\n\r",strlen(buffer),strlen(buffer),buffer);
Bobty 6:46285c519af2 219 // if (strncmp(buffer, "GET ", 4) == 0)
Bobty 6:46285c519af2 220 // {
Bobty 6:46285c519af2 221 //// pc.printf("GET request\n\r");
Bobty 6:46285c519af2 222 // char cmdStr[MAX_CMDSTR_LEN];
Bobty 6:46285c519af2 223 // char argStr[MAX_ARGSTR_LEN];
Bobty 6:46285c519af2 224 // if (extractCmdArgs(buffer+3, cmdStr, MAX_CMDSTR_LEN, argStr, MAX_ARGSTR_LEN))
Bobty 6:46285c519af2 225 // {
Bobty 6:46285c519af2 226 // pc.printf("CmdStr %s\n\r", cmdStr);
Bobty 6:46285c519af2 227 // pc.printf("ArgStr %s\n\r", argStr);
Bobty 6:46285c519af2 228 // bool cmdFound = false;
Bobty 6:46285c519af2 229 // for (std::vector<RdWebServerCmdDef*>::iterator it = _commands.begin() ; it != _commands.end(); ++it)
Bobty 6:46285c519af2 230 // {
Bobty 6:46285c519af2 231 //// pc.printf("Testing <<%s>> with <<%s>>\r\n", (*it)->_pCmdStr, cmdStr);
Bobty 6:46285c519af2 232 // if (strcasecmp((*it)->_pCmdStr, cmdStr) == 0)
Bobty 6:46285c519af2 233 // {
Bobty 6:46285c519af2 234 // pc.printf("FoundCmd <%s> Type %d\n\r", cmdStr, (*it)->_cmdType);
Bobty 6:46285c519af2 235 // cmdFound = true;
Bobty 6:46285c519af2 236 // if ((*it)->_cmdType == RdWebServerCmdDef::CMD_CALLBACK)
Bobty 6:46285c519af2 237 // {
Bobty 6:46285c519af2 238 // char* respStr = ((*it)->_callback)(cmdStr, argStr);
Bobty 6:46285c519af2 239 // client.send(respStr, strlen(respStr));
Bobty 6:46285c519af2 240 // }
Bobty 6:46285c519af2 241 // else if ((*it)->_cmdType == RdWebServerCmdDef::CMD_LOCALFILE)
Bobty 6:46285c519af2 242 // {
Bobty 6:46285c519af2 243 // if ((*it)->_substFileName[0] != '\0')
Bobty 6:46285c519af2 244 // handleLocalFileRequest((*it)->_substFileName, argStr, &client, httpHeader, (*it)->_bCacheIfPossible);
Bobty 6:46285c519af2 245 // else
Bobty 6:46285c519af2 246 // handleLocalFileRequest(cmdStr, argStr, &client, httpHeader, (*it)->_bCacheIfPossible);
Bobty 6:46285c519af2 247 // }
Bobty 6:46285c519af2 248 // else if ((*it)->_cmdType == RdWebServerCmdDef::CMD_SDORUSBFILE)
Bobty 6:46285c519af2 249 // {
Bobty 6:46285c519af2 250 // if ((*it)->_substFileName[0] != '\0')
Bobty 6:46285c519af2 251 // handleSDFileRequest((*it)->_substFileName, argStr, &client, httpHeader);
Bobty 6:46285c519af2 252 // else
Bobty 6:46285c519af2 253 // handleSDFileRequest(cmdStr, argStr, &client, httpHeader);
Bobty 6:46285c519af2 254 // }
Bobty 6:46285c519af2 255 // break;
Bobty 6:46285c519af2 256 // }
Bobty 6:46285c519af2 257 // }
Bobty 6:46285c519af2 258 // // If command not found see if it is a local file
Bobty 6:46285c519af2 259 // if (!cmdFound)
Bobty 6:46285c519af2 260 // handleLocalFileRequest(cmdStr, argStr, &client, httpHeader, false);
Bobty 6:46285c519af2 261 // }
Bobty 6:46285c519af2 262 //
Bobty 6:46285c519af2 263 // break;
Bobty 6:46285c519af2 264 // }
Bobty 6:46285c519af2 265 //
Bobty 6:46285c519af2 266 // }
Bobty 6:46285c519af2 267 // pc.printf("Connection closed ... TCP server is listening...\r\n");
Bobty 6:46285c519af2 268 // client.close();
Bobty 6:46285c519af2 269 // if (_pStatusLed != NULL)
Bobty 6:46285c519af2 270 // *_pStatusLed = false;
Bobty 6:46285c519af2 271 // }
Bobty 6:46285c519af2 272 // }
Bobty 6:46285c519af2 273 }
Bobty 6:46285c519af2 274
Bobty 6:46285c519af2 275 void RdWebServer::addCommand(char* pCmdStr, int cmdType, CmdCallbackType callback, char* substFileName, bool cacheIfPossible)
Bobty 6:46285c519af2 276 {
Bobty 6:46285c519af2 277 _commands.push_back(new RdWebServerCmdDef(pCmdStr, cmdType, callback, substFileName, cacheIfPossible));
Bobty 6:46285c519af2 278 }
Bobty 6:46285c519af2 279
Bobty 6:46285c519af2 280 void RdWebServer::handleSDFileRequest(char* inFileName, char* argStr, TCPSocketConnection &client, char* httpHeader)
Bobty 6:46285c519af2 281 {
Bobty 6:46285c519af2 282 const int HTTPD_MAX_FNAME_LENGTH = 127;
Bobty 6:46285c519af2 283 char filename[HTTPD_MAX_FNAME_LENGTH+1];
Bobty 6:46285c519af2 284
Bobty 6:46285c519af2 285 pc.printf("Requesting file %s\n\r", inFileName);
Bobty 6:46285c519af2 286
Bobty 6:46285c519af2 287 char *lstchr = strrchr(inFileName, NULL) -1;
Bobty 6:46285c519af2 288 if ('/' == *lstchr)
Bobty 6:46285c519af2 289 {
Bobty 6:46285c519af2 290 pc.printf("Request file %s%s\n", _pBaseWebFolder, inFileName);
Bobty 6:46285c519af2 291 *lstchr = 0;
Bobty 6:46285c519af2 292 sprintf(filename, "%s%s", _pBaseWebFolder, inFileName);
Bobty 6:46285c519af2 293 DIR *d = opendir(filename);
Bobty 6:46285c519af2 294 if (d != NULL) {
Bobty 6:46285c519af2 295 sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n");
Bobty 6:46285c519af2 296 client.send(httpHeader,strlen(httpHeader));
Bobty 6:46285c519af2 297 sprintf(httpHeader,"<html><head><title>Directory Listing</title></head><body><h1>%s</h1><ul>", inFileName);
Bobty 6:46285c519af2 298 client.send(httpHeader,strlen(httpHeader));
Bobty 6:46285c519af2 299 struct dirent *p;
Bobty 6:46285c519af2 300 while((p = readdir(d)) != NULL) {
Bobty 6:46285c519af2 301 pc.printf("%s\n", p->d_name);
Bobty 6:46285c519af2 302 sprintf(httpHeader,"<li>%s</li>", p->d_name);
Bobty 6:46285c519af2 303 client.send(httpHeader,strlen(httpHeader));
Bobty 6:46285c519af2 304 }
Bobty 6:46285c519af2 305 }
Bobty 6:46285c519af2 306 closedir(d);
Bobty 6:46285c519af2 307 // pc.printf("Directory closed\n");
Bobty 6:46285c519af2 308 sprintf(httpHeader,"</ul></body></html>");
Bobty 6:46285c519af2 309 client.send(httpHeader,strlen(httpHeader));
Bobty 6:46285c519af2 310 }
Bobty 6:46285c519af2 311 else
Bobty 6:46285c519af2 312 {
Bobty 6:46285c519af2 313 sprintf(filename, "%s%s", _pBaseWebFolder, inFileName);
Bobty 6:46285c519af2 314 pc.printf ("Filename %s\r\n", filename);
Bobty 6:46285c519af2 315
Bobty 6:46285c519af2 316 FILE* fp = fopen(filename, "r");
Bobty 6:46285c519af2 317 if (fp == NULL)
Bobty 6:46285c519af2 318 {
Bobty 6:46285c519af2 319 pc.printf ("Filename %s not found\r\n", filename);
Bobty 6:46285c519af2 320 sprintf(httpHeader,"HTTP/1.1 404 Not Found \r\nContent-Type: text\r\nConnection: Close\r\n\r\n");
Bobty 6:46285c519af2 321 client.send(httpHeader,strlen(httpHeader));
Bobty 6:46285c519af2 322 client.send(inFileName,strlen(inFileName));
Bobty 6:46285c519af2 323 }
Bobty 6:46285c519af2 324 else
Bobty 6:46285c519af2 325 {
Bobty 6:46285c519af2 326 pc.printf ("Sending file %s\r\n", filename);
Bobty 6:46285c519af2 327 sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n");
Bobty 6:46285c519af2 328 client.send(httpHeader,strlen(httpHeader));
Bobty 6:46285c519af2 329 int rdCnt = 0;
Bobty 6:46285c519af2 330 char fileBuf[1024];
Bobty 6:46285c519af2 331 while ((rdCnt = fread(fileBuf, sizeof( char ), 1024, fp)) == 1024)
Bobty 6:46285c519af2 332 {
Bobty 6:46285c519af2 333 client.send(fileBuf, rdCnt);
Bobty 6:46285c519af2 334 }
Bobty 6:46285c519af2 335 client.send(fileBuf, rdCnt);
Bobty 6:46285c519af2 336 fclose(fp);
Bobty 6:46285c519af2 337 }
Bobty 6:46285c519af2 338 }
Bobty 6:46285c519af2 339 // FILE* fp = fopen("/sd/index.htm", "r");
Bobty 6:46285c519af2 340 // if (fp == NULL)
Bobty 6:46285c519af2 341 // {
Bobty 6:46285c519af2 342 // pc.printf ("Filename %s not found\r\n", inFileName);
Bobty 6:46285c519af2 343 // }
Bobty 6:46285c519af2 344 // else
Bobty 6:46285c519af2 345 // {
Bobty 6:46285c519af2 346 // pc.printf ("Sending file %s\r\n", inFileName);
Bobty 6:46285c519af2 347 // fclose(fp);
Bobty 6:46285c519af2 348 // }
Bobty 6:46285c519af2 349
Bobty 6:46285c519af2 350 // const char * msg = "Hello World\n\r\n\r";
Bobty 6:46285c519af2 351 // 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));
Bobty 6:46285c519af2 352 // client.send(_buffer,strlen(_buffer));
Bobty 6:46285c519af2 353 // client.send( const_cast<char*>(msg), strlen(msg));
Bobty 6:46285c519af2 354 }
Bobty 6:46285c519af2 355
Bobty 6:46285c519af2 356 void RdWebServer::sendFromCache(RdFileCacheEntry* pCacheEntry, TCPSocketConnection &client, char* httpHeader)
Bobty 6:46285c519af2 357 {
Bobty 6:46285c519af2 358 pc.printf ("Sending file %s from cache %d bytes\r\n", pCacheEntry->_fileName, pCacheEntry->_nFileLen);
Bobty 6:46285c519af2 359 sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n");
Bobty 6:46285c519af2 360 client.send(httpHeader,strlen(httpHeader));
Bobty 6:46285c519af2 361 char* pMem = pCacheEntry->_pFileContent;
Bobty 6:46285c519af2 362 int nLenLeft = pCacheEntry->_nFileLen;
Bobty 6:46285c519af2 363 int blkSize = 2048;
Bobty 6:46285c519af2 364 while(nLenLeft > 0)
Bobty 6:46285c519af2 365 {
Bobty 6:46285c519af2 366 if (blkSize > nLenLeft)
Bobty 6:46285c519af2 367 blkSize = nLenLeft;
Bobty 6:46285c519af2 368 client.send_all(pMem, blkSize);
Bobty 6:46285c519af2 369 pMem += blkSize;
Bobty 6:46285c519af2 370 nLenLeft -= blkSize;
Bobty 6:46285c519af2 371 }
Bobty 6:46285c519af2 372 }
Bobty 6:46285c519af2 373
Bobty 6:46285c519af2 374 void RdWebServer::handleLocalFileRequest(char* inFileName, char* argStr, TCPSocketConnection &client, char* httpHeader, bool bCacheIfPossible)
Bobty 6:46285c519af2 375 {
Bobty 6:46285c519af2 376 const int HTTPD_MAX_FNAME_LENGTH = 127;
Bobty 6:46285c519af2 377 char localFilename[HTTPD_MAX_FNAME_LENGTH+1];
Bobty 6:46285c519af2 378 char reqFileNameStr[HTTPD_MAX_FNAME_LENGTH+1];
Bobty 6:46285c519af2 379
Bobty 6:46285c519af2 380 pc.printf("Requesting local file %s\n\r", inFileName);
Bobty 6:46285c519af2 381 sprintf(reqFileNameStr, "/%s", inFileName);
Bobty 6:46285c519af2 382 sprintf(localFilename, "/local/%s", inFileName);
Bobty 6:46285c519af2 383
Bobty 6:46285c519af2 384 if (bCacheIfPossible)
Bobty 6:46285c519af2 385 {
Bobty 6:46285c519af2 386 // Check if file already cached
Bobty 6:46285c519af2 387 bool bTryToCache = true;
Bobty 6:46285c519af2 388 for (std::vector<RdFileCacheEntry*>::iterator it = _cachedFiles.begin() ; it != _cachedFiles.end(); ++it)
Bobty 6:46285c519af2 389 {
Bobty 6:46285c519af2 390 if (strcmp(inFileName, (*it)->_fileName) == 0)
Bobty 6:46285c519af2 391 {
Bobty 6:46285c519af2 392 if ((*it)->_bCacheValid)
Bobty 6:46285c519af2 393 {
Bobty 6:46285c519af2 394 sendFromCache(*it, client, httpHeader);
Bobty 6:46285c519af2 395 return;
Bobty 6:46285c519af2 396 }
Bobty 6:46285c519af2 397 bTryToCache = false; // don't try to cache as cacheing must have already failed
Bobty 6:46285c519af2 398 }
Bobty 6:46285c519af2 399 }
Bobty 6:46285c519af2 400
Bobty 6:46285c519af2 401 // See if we can cache the file
Bobty 6:46285c519af2 402 if (bTryToCache)
Bobty 6:46285c519af2 403 {
Bobty 6:46285c519af2 404 RdFileCacheEntry* pCacheEntry = new RdFileCacheEntry(inFileName);
Bobty 6:46285c519af2 405 if (pCacheEntry)
Bobty 6:46285c519af2 406 {
Bobty 6:46285c519af2 407 bool bCacheSuccess = pCacheEntry->readLocalFileIntoCache(localFilename);
Bobty 6:46285c519af2 408 // 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 409 _cachedFiles.push_back(pCacheEntry);
Bobty 6:46285c519af2 410 if (bCacheSuccess)
Bobty 6:46285c519af2 411 {
Bobty 6:46285c519af2 412 sendFromCache(pCacheEntry, client, httpHeader);
Bobty 6:46285c519af2 413 return;
Bobty 6:46285c519af2 414 }
Bobty 6:46285c519af2 415 }
Bobty 6:46285c519af2 416 }
Bobty 6:46285c519af2 417 }
Bobty 6:46285c519af2 418
Bobty 6:46285c519af2 419 LocalFileSystem local("local");
Bobty 6:46285c519af2 420
Bobty 6:46285c519af2 421 FILE* fp = fopen(localFilename, "r");
Bobty 6:46285c519af2 422 if (fp == NULL)
Bobty 6:46285c519af2 423 {
Bobty 6:46285c519af2 424 pc.printf ("Local file %s not found\r\n", localFilename);
Bobty 6:46285c519af2 425 sprintf(httpHeader,"HTTP/1.1 404 Not Found \r\nContent-Type: text\r\nConnection: Close\r\n\r\n");
Bobty 6:46285c519af2 426 client.send(httpHeader,strlen(httpHeader));
Bobty 6:46285c519af2 427 client.send(reqFileNameStr,strlen(reqFileNameStr));
Bobty 6:46285c519af2 428 }
Bobty 6:46285c519af2 429 else
Bobty 6:46285c519af2 430 {
Bobty 6:46285c519af2 431 pc.printf ("Sending file %s from disk\r\n", localFilename);
Bobty 6:46285c519af2 432 sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n");
Bobty 6:46285c519af2 433 client.send(httpHeader,strlen(httpHeader));
Bobty 6:46285c519af2 434 int rdCnt = 0;
Bobty 6:46285c519af2 435 char fileBuf[2000];
Bobty 6:46285c519af2 436 while ((rdCnt = fread(fileBuf, sizeof( char ), 2000, fp)) == 2000)
Bobty 6:46285c519af2 437 {
Bobty 6:46285c519af2 438 client.send_all(fileBuf, rdCnt);
Bobty 6:46285c519af2 439 }
Bobty 6:46285c519af2 440 client.send_all(fileBuf, rdCnt);
Bobty 6:46285c519af2 441 fclose(fp);
Bobty 6:46285c519af2 442 }
Bobty 6:46285c519af2 443 }
Bobty 6:46285c519af2 444
Bobty 6:46285c519af2 445 bool RdFileCacheEntry::readLocalFileIntoCache(char* fileName)
Bobty 6:46285c519af2 446 {
Bobty 6:46285c519af2 447 pc.printf("Reading into cache %s\n\r", fileName);
Bobty 6:46285c519af2 448 LocalFileSystem local("local");
Bobty 6:46285c519af2 449 FILE* fp = fopen(fileName, "r");
Bobty 6:46285c519af2 450 if (fp == NULL)
Bobty 6:46285c519af2 451 {
Bobty 6:46285c519af2 452 pc.printf("Failed to open file\n\r");
Bobty 6:46285c519af2 453 return false;
Bobty 6:46285c519af2 454 }
Bobty 6:46285c519af2 455 pc.printf("Seeking\n\r");
Bobty 6:46285c519af2 456 fseek(fp, 0, SEEK_END);
Bobty 6:46285c519af2 457 _nFileLen = (int)ftell(fp);
Bobty 6:46285c519af2 458 _pFileContent = new char[_nFileLen];
Bobty 6:46285c519af2 459 pc.printf("Len %d Buf %08x\n\r", _nFileLen, _pFileContent);
Bobty 6:46285c519af2 460 if (!_pFileContent)
Bobty 6:46285c519af2 461 {
Bobty 6:46285c519af2 462 pc.printf("Failed to allocate %lu\n\r", _nFileLen);
Bobty 6:46285c519af2 463 fclose(fp);
Bobty 6:46285c519af2 464 return false;
Bobty 6:46285c519af2 465 }
Bobty 6:46285c519af2 466 pc.printf("Allocated\n\r");
Bobty 6:46285c519af2 467 memset(_pFileContent, 0, _nFileLen);
Bobty 6:46285c519af2 468 fseek(fp, 0, SEEK_SET);
Bobty 6:46285c519af2 469 char* pMem = _pFileContent;
Bobty 6:46285c519af2 470 char fileBuf[100];
Bobty 6:46285c519af2 471 int totCnt = 0;
Bobty 6:46285c519af2 472 int rdCnt = 0;
Bobty 6:46285c519af2 473 pc.printf("Reading\n\r");
Bobty 6:46285c519af2 474 while (true)
Bobty 6:46285c519af2 475 {
Bobty 6:46285c519af2 476 int toRead = _nFileLen - totCnt;
Bobty 6:46285c519af2 477 if (toRead > sizeof(fileBuf))
Bobty 6:46285c519af2 478 toRead = sizeof(fileBuf);
Bobty 6:46285c519af2 479 if (toRead <= 0)
Bobty 6:46285c519af2 480 break;
Bobty 6:46285c519af2 481 rdCnt = fread(fileBuf, sizeof(char), toRead, fp);
Bobty 6:46285c519af2 482 if (rdCnt <= 0)
Bobty 6:46285c519af2 483 break;
Bobty 6:46285c519af2 484 pc.printf("Read %d tot %d of %d\n\r", rdCnt, totCnt, _nFileLen);
Bobty 6:46285c519af2 485 memcpy(pMem, fileBuf, rdCnt);
Bobty 6:46285c519af2 486 pMem += rdCnt;
Bobty 6:46285c519af2 487 totCnt += rdCnt;
Bobty 6:46285c519af2 488 }
Bobty 6:46285c519af2 489 pc.printf("Done read\n\r");
Bobty 6:46285c519af2 490 fclose(fp);
Bobty 6:46285c519af2 491 pc.printf("Success in caching %d bytes (read %d)\n\r", _nFileLen, totCnt);
Bobty 6:46285c519af2 492 _bCacheValid = true;
Bobty 0:b5b4d07f7827 493 return true;
Bobty 0:b5b4d07f7827 494 }
Bobty 0:b5b4d07f7827 495
Bobty 1:75bb184de749 496 bool RdWebServer::extractCmdArgs(char* buf, char* pCmdStr, int maxCmdStrLen, char* pArgStr, int maxArgStrLen)
Bobty 1:75bb184de749 497 {
Bobty 1:75bb184de749 498 *pCmdStr = '\0';
Bobty 1:75bb184de749 499 *pArgStr = '\0';
Bobty 1:75bb184de749 500 int cmdStrLen = 0;
Bobty 1:75bb184de749 501 int argStrLen = 0;
Bobty 1:75bb184de749 502 if (buf == NULL)
Bobty 1:75bb184de749 503 return false;
Bobty 1:75bb184de749 504 char* pSlash1 = strchr(buf, '/');
Bobty 1:75bb184de749 505 if (pSlash1 == NULL)
Bobty 1:75bb184de749 506 return false;
Bobty 1:75bb184de749 507 pSlash1++;
Bobty 1:75bb184de749 508 while(*pSlash1)
Bobty 1:75bb184de749 509 {
Bobty 1:75bb184de749 510 if (cmdStrLen >= maxCmdStrLen-1)
Bobty 1:75bb184de749 511 break;
Bobty 1:75bb184de749 512 if ((*pSlash1 == '/') || (*pSlash1 == ' ') || (*pSlash1 == '\n'))
Bobty 1:75bb184de749 513 break;
Bobty 1:75bb184de749 514 *pCmdStr++ = *pSlash1++;
Bobty 1:75bb184de749 515 *pCmdStr = '\0';
Bobty 1:75bb184de749 516 cmdStrLen++;
Bobty 1:75bb184de749 517 }
Bobty 1:75bb184de749 518 if ((*pSlash1 == '\0') || (*pSlash1 == ' ') || (*pSlash1 == '\n'))
Bobty 1:75bb184de749 519 return true;
Bobty 1:75bb184de749 520 *pSlash1++;
Bobty 1:75bb184de749 521 while(*pSlash1)
Bobty 1:75bb184de749 522 {
Bobty 1:75bb184de749 523 if (argStrLen >= maxArgStrLen-1)
Bobty 1:75bb184de749 524 break;
Bobty 1:75bb184de749 525 if ((*pSlash1 == ' ') || (*pSlash1 == '\n'))
Bobty 1:75bb184de749 526 break;
Bobty 1:75bb184de749 527 *pArgStr++ = *pSlash1++;
Bobty 1:75bb184de749 528 *pArgStr = '\0';
Bobty 1:75bb184de749 529 argStrLen++;
Bobty 1:75bb184de749 530 }
Bobty 1:75bb184de749 531 return true;
Bobty 1:75bb184de749 532 }