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 15:05:44 2015 +0000
Revision:
14:4b83670854f0
Parent:
13:4f9c09d3da13
Child:
15:0865fa4b046a
Improving robustness

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 12:c14ffd4ec125 7 #define RDWEB_DEBUG 5
Bobty 12:c14ffd4ec125 8
Bobty 0:b5b4d07f7827 9 #include "RdWebServer.h"
Bobty 0:b5b4d07f7827 10
Bobty 1:75bb184de749 11 #define MAX_CMDSTR_LEN 100
Bobty 1:75bb184de749 12 #define MAX_ARGSTR_LEN 100
Bobty 13:4f9c09d3da13 13 #define MAX_FILENAME_LEN (MAX_ARGSTR_LEN + 20)
Bobty 14:4b83670854f0 14 #define MAX_MIMETYPE_LEN 50
Bobty 1:75bb184de749 15
Bobty 0:b5b4d07f7827 16 RdWebServer::RdWebServer()
Bobty 0:b5b4d07f7827 17 {
Bobty 0:b5b4d07f7827 18 _serverIsListening = 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 0:b5b4d07f7827 31 _port = port;
Bobty 0:b5b4d07f7827 32 _pStatusLed = pStatusLed;
Bobty 4:6afb3bbf20a4 33 _pBaseWebFolder = pBaseWebFolder;
Bobty 0:b5b4d07f7827 34
Bobty 6:46285c519af2 35 _socketSrv.set_blocking(true);
Bobty 0:b5b4d07f7827 36
Bobty 0:b5b4d07f7827 37 //setup tcp socket
Bobty 0:b5b4d07f7827 38 if(_socketSrv.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 0:b5b4d07f7827 43 else
Bobty 0:b5b4d07f7827 44 {
Bobty 11:cec51b430b20 45 RD_DBG("TCP server bind success\n\r");
Bobty 0:b5b4d07f7827 46 _serverIsListening = true;
Bobty 0:b5b4d07f7827 47 }
Bobty 0:b5b4d07f7827 48
Bobty 0:b5b4d07f7827 49 if(_socketSrv.listen(1) < 0)
Bobty 0:b5b4d07f7827 50 {
Bobty 11:cec51b430b20 51 RD_WARN("TCP server listen fail\n\r");
Bobty 0:b5b4d07f7827 52 return false;
Bobty 0:b5b4d07f7827 53 }
Bobty 0:b5b4d07f7827 54 else
Bobty 0:b5b4d07f7827 55 {
Bobty 11:cec51b430b20 56 RD_INFO("TCP server is listening...\r\n");
Bobty 6:46285c519af2 57 }
Bobty 6:46285c519af2 58
Bobty 6:46285c519af2 59 return true;
Bobty 6:46285c519af2 60 }
Bobty 6:46285c519af2 61
Bobty 14:4b83670854f0 62 bool RdWebServer::handleReceivedHttp(TCPSocketConnection &client)
Bobty 6:46285c519af2 63 {
Bobty 14:4b83670854f0 64 bool closeConn = true;
Bobty 11:cec51b430b20 65 RD_DBG("Received Data: %d\n\r\n\r%.*s\n\r",strlen(_buffer),strlen(_buffer),_buffer);
Bobty 7:fe7c33f7fbb8 66 int method = METHOD_OTHER;
Bobty 6:46285c519af2 67 if (strncmp(_buffer, "GET ", 4) == 0)
Bobty 7:fe7c33f7fbb8 68 method = METHOD_GET;
Bobty 7:fe7c33f7fbb8 69 if (strncmp(_buffer, "POST", 4) == 0)
Bobty 7:fe7c33f7fbb8 70 method = METHOD_POST;
Bobty 7:fe7c33f7fbb8 71
Bobty 7:fe7c33f7fbb8 72 char cmdStr[MAX_CMDSTR_LEN];
Bobty 7:fe7c33f7fbb8 73 char argStr[MAX_ARGSTR_LEN];
Bobty 7:fe7c33f7fbb8 74 if (extractCmdArgs(_buffer+3, cmdStr, MAX_CMDSTR_LEN, argStr, MAX_ARGSTR_LEN))
Bobty 6:46285c519af2 75 {
Bobty 11:cec51b430b20 76 RD_DBG("CmdStr %s\n\r", cmdStr);
Bobty 11:cec51b430b20 77 RD_DBG("ArgStr %s\n\r", argStr);
Bobty 7:fe7c33f7fbb8 78 bool cmdFound = false;
Bobty 7:fe7c33f7fbb8 79 for (std::vector<RdWebServerCmdDef*>::iterator it = _commands.begin() ; it != _commands.end(); ++it)
Bobty 6:46285c519af2 80 {
Bobty 11:cec51b430b20 81 RD_DBG("Testing <<%s>> with <<%s>>\r\n", (*it)->_pCmdStr, cmdStr);
Bobty 7:fe7c33f7fbb8 82 if (strcasecmp((*it)->_pCmdStr, cmdStr) == 0)
Bobty 7:fe7c33f7fbb8 83 {
Bobty 11:cec51b430b20 84 RD_DBG("FoundCmd <%s> Type %d\n\r", cmdStr, (*it)->_cmdType);
Bobty 7:fe7c33f7fbb8 85 cmdFound = true;
Bobty 7:fe7c33f7fbb8 86 if ((*it)->_cmdType == RdWebServerCmdDef::CMD_CALLBACK)
Bobty 7:fe7c33f7fbb8 87 {
Bobty 7:fe7c33f7fbb8 88 char* respStr = ((*it)->_callback)(method, cmdStr, argStr);
Bobty 14:4b83670854f0 89 client.send_all(respStr, strlen(respStr));
Bobty 6:46285c519af2 90 }
Bobty 7:fe7c33f7fbb8 91 else if ((*it)->_cmdType == RdWebServerCmdDef::CMD_LOCALFILE)
Bobty 7:fe7c33f7fbb8 92 {
Bobty 7:fe7c33f7fbb8 93 if ((*it)->_substFileName[0] != '\0')
Bobty 13:4f9c09d3da13 94 {
Bobty 13:4f9c09d3da13 95 char combinedFileName[MAX_FILENAME_LEN];
Bobty 13:4f9c09d3da13 96 strcpy(combinedFileName, (*it)->_substFileName);
Bobty 13:4f9c09d3da13 97 if (combinedFileName[strlen(combinedFileName)-1] == '*')
Bobty 13:4f9c09d3da13 98 strcpy(combinedFileName+strlen(combinedFileName)-1, argStr);
Bobty 13:4f9c09d3da13 99 handleLocalFileRequest(combinedFileName, argStr, client, _httpHeader, (*it)->_bCacheIfPossible);
Bobty 13:4f9c09d3da13 100 }
Bobty 7:fe7c33f7fbb8 101 else
Bobty 13:4f9c09d3da13 102 {
Bobty 7:fe7c33f7fbb8 103 handleLocalFileRequest(cmdStr, argStr, client, _httpHeader, (*it)->_bCacheIfPossible);
Bobty 13:4f9c09d3da13 104 }
Bobty 7:fe7c33f7fbb8 105 }
Bobty 7:fe7c33f7fbb8 106 else if ((*it)->_cmdType == RdWebServerCmdDef::CMD_SDORUSBFILE)
Bobty 7:fe7c33f7fbb8 107 {
Bobty 7:fe7c33f7fbb8 108 if ((*it)->_substFileName[0] != '\0')
Bobty 13:4f9c09d3da13 109 {
Bobty 13:4f9c09d3da13 110 char combinedFileName[MAX_FILENAME_LEN];
Bobty 13:4f9c09d3da13 111 strcpy(combinedFileName, (*it)->_substFileName);
Bobty 13:4f9c09d3da13 112 if (combinedFileName[strlen(combinedFileName)-1] == '*')
Bobty 13:4f9c09d3da13 113 strcpy(combinedFileName+strlen(combinedFileName)-1, argStr);
Bobty 14:4b83670854f0 114 closeConn = handleSDFileRequest(combinedFileName, argStr, client, _httpHeader);
Bobty 13:4f9c09d3da13 115 }
Bobty 7:fe7c33f7fbb8 116 else
Bobty 13:4f9c09d3da13 117 {
Bobty 14:4b83670854f0 118 closeConn = handleSDFileRequest(cmdStr, argStr, client, _httpHeader);
Bobty 13:4f9c09d3da13 119 }
Bobty 7:fe7c33f7fbb8 120 }
Bobty 7:fe7c33f7fbb8 121 break;
Bobty 6:46285c519af2 122 }
Bobty 6:46285c519af2 123 }
Bobty 7:fe7c33f7fbb8 124 // If command not found see if it is a local file
Bobty 7:fe7c33f7fbb8 125 if (!cmdFound)
Bobty 14:4b83670854f0 126 closeConn = handleSDFileRequest(cmdStr, argStr, client, _httpHeader);
Bobty 6:46285c519af2 127 }
Bobty 14:4b83670854f0 128 return closeConn;
Bobty 6:46285c519af2 129 }
Bobty 6:46285c519af2 130
Bobty 6:46285c519af2 131 void RdWebServer::run()
Bobty 6:46285c519af2 132 {
Bobty 8:de915bd70ec1 133 TCPSocketConnection client;
Bobty 8:de915bd70ec1 134 Timer connectLimitTimer;
Bobty 6:46285c519af2 135
Bobty 8:de915bd70ec1 136 while (isListening())
Bobty 6:46285c519af2 137 {
Bobty 11:cec51b430b20 138 RD_INFO("Waiting for TCP connection\r\n");
Bobty 6:46285c519af2 139 if(_socketSrv.accept(client)<0)
Bobty 6:46285c519af2 140 {
Bobty 11:cec51b430b20 141 RD_WARN("TCP Socket failed to accept connection\n\r");
Bobty 6:46285c519af2 142 }
Bobty 6:46285c519af2 143 else
Bobty 6:46285c519af2 144 {
Bobty 9:35668248199b 145 client.set_blocking(false, 2000);
Bobty 11:cec51b430b20 146 RD_INFO("Connection from IP: %s\n\r",client.get_address());
Bobty 6:46285c519af2 147 if (_pStatusLed != NULL)
Bobty 6:46285c519af2 148 *_pStatusLed = true;
Bobty 8:de915bd70ec1 149
Bobty 8:de915bd70ec1 150 connectLimitTimer.reset();
Bobty 8:de915bd70ec1 151 connectLimitTimer.start();
Bobty 8:de915bd70ec1 152 while(true)
Bobty 6:46285c519af2 153 {
Bobty 8:de915bd70ec1 154 // Check connection timer - 10 seconds timeout on HTTP operation
Bobty 8:de915bd70ec1 155 if (connectLimitTimer.read() >= 10)
Bobty 8:de915bd70ec1 156 {
Bobty 11:cec51b430b20 157 RD_WARN("Connection timed out\n\r");
Bobty 8:de915bd70ec1 158 break;
Bobty 8:de915bd70ec1 159 }
Bobty 8:de915bd70ec1 160 // Get received data
Bobty 8:de915bd70ec1 161 int rxLen = client.receive(_buffer, HTTPD_MAX_REQ_LENGTH);
Bobty 8:de915bd70ec1 162 if (rxLen == -1)
Bobty 8:de915bd70ec1 163 {
Bobty 13:4f9c09d3da13 164 RD_WARN("Nothing received\n\r");
Bobty 8:de915bd70ec1 165 continue;
Bobty 8:de915bd70ec1 166 }
Bobty 8:de915bd70ec1 167 else if (rxLen == 0)
Bobty 8:de915bd70ec1 168 {
Bobty 11:cec51b430b20 169 RD_WARN("received buffer is empty.\n\r");
Bobty 14:4b83670854f0 170 break;
Bobty 8:de915bd70ec1 171 }
Bobty 8:de915bd70ec1 172 else if (rxLen > HTTPD_MAX_REQ_LENGTH)
Bobty 8:de915bd70ec1 173 {
Bobty 8:de915bd70ec1 174 sprintf(_httpHeader,"HTTP/1.1 413 Request Entity Too Large \r\nContent-Type: text\r\nConnection: Close\r\n\r\n");
Bobty 14:4b83670854f0 175 client.send_all(_httpHeader,strlen(_httpHeader));
Bobty 14:4b83670854f0 176 client.send_all(_buffer, rxLen);
Bobty 14:4b83670854f0 177 break;
Bobty 8:de915bd70ec1 178 }
Bobty 8:de915bd70ec1 179 _buffer[rxLen] = '\0';
Bobty 8:de915bd70ec1 180
Bobty 8:de915bd70ec1 181 // Handle buffer
Bobty 14:4b83670854f0 182 if (handleReceivedHttp(client))
Bobty 14:4b83670854f0 183 {
Bobty 14:4b83670854f0 184 break;
Bobty 14:4b83670854f0 185 }
Bobty 14:4b83670854f0 186 else
Bobty 14:4b83670854f0 187 {
Bobty 14:4b83670854f0 188 connectLimitTimer.reset();
Bobty 14:4b83670854f0 189 connectLimitTimer.start();
Bobty 14:4b83670854f0 190 }
Bobty 6:46285c519af2 191 }
Bobty 8:de915bd70ec1 192
Bobty 8:de915bd70ec1 193 // Connection now closed
Bobty 11:cec51b430b20 194 RD_INFO("Connection closed ...\r\n");
Bobty 8:de915bd70ec1 195 client.close();
Bobty 8:de915bd70ec1 196 if (_pStatusLed != NULL)
Bobty 8:de915bd70ec1 197 *_pStatusLed = false;
Bobty 6:46285c519af2 198 }
Bobty 8:de915bd70ec1 199
Bobty 0:b5b4d07f7827 200 }
Bobty 6:46285c519af2 201 }
Bobty 6:46285c519af2 202
Bobty 6:46285c519af2 203 void RdWebServer::addCommand(char* pCmdStr, int cmdType, CmdCallbackType callback, char* substFileName, bool cacheIfPossible)
Bobty 6:46285c519af2 204 {
Bobty 6:46285c519af2 205 _commands.push_back(new RdWebServerCmdDef(pCmdStr, cmdType, callback, substFileName, cacheIfPossible));
Bobty 6:46285c519af2 206 }
Bobty 6:46285c519af2 207
Bobty 14:4b83670854f0 208 bool RdWebServer::handleSDFileRequest(char* inFileName, char* argStr, TCPSocketConnection &client, char* httpHeader)
Bobty 6:46285c519af2 209 {
Bobty 14:4b83670854f0 210 bool closeConn = true;
Bobty 6:46285c519af2 211 const int HTTPD_MAX_FNAME_LENGTH = 127;
Bobty 6:46285c519af2 212 char filename[HTTPD_MAX_FNAME_LENGTH+1];
Bobty 6:46285c519af2 213
Bobty 11:cec51b430b20 214 RD_INFO("Requesting file %s\n\r", inFileName);
Bobty 6:46285c519af2 215
Bobty 12:c14ffd4ec125 216 #ifdef SUPPORT_FOLDER_VIEW
Bobty 10:b4b9d4d5e5be 217 if ((strlen(inFileName) > 0) && (inFileName[strlen(inFileName)-1] == '/'))
Bobty 6:46285c519af2 218 {
Bobty 11:cec51b430b20 219 RD_INFO("Request directory %s%s\r\n", _pBaseWebFolder, inFileName);
Bobty 6:46285c519af2 220 sprintf(filename, "%s%s", _pBaseWebFolder, inFileName);
Bobty 6:46285c519af2 221 DIR *d = opendir(filename);
Bobty 11:cec51b430b20 222 if (d != NULL)
Bobty 11:cec51b430b20 223 {
Bobty 6:46285c519af2 224 sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n");
Bobty 14:4b83670854f0 225 client.send_all(httpHeader,strlen(httpHeader));
Bobty 6:46285c519af2 226 sprintf(httpHeader,"<html><head><title>Directory Listing</title></head><body><h1>%s</h1><ul>", inFileName);
Bobty 14:4b83670854f0 227 client.send_all(httpHeader,strlen(httpHeader));
Bobty 6:46285c519af2 228 struct dirent *p;
Bobty 11:cec51b430b20 229 while((p = readdir(d)) != NULL)
Bobty 11:cec51b430b20 230 {
Bobty 11:cec51b430b20 231 RD_INFO("%s\r\n", p->d_name);
Bobty 6:46285c519af2 232 sprintf(httpHeader,"<li>%s</li>", p->d_name);
Bobty 14:4b83670854f0 233 client.send_all(httpHeader,strlen(httpHeader));
Bobty 6:46285c519af2 234 }
Bobty 6:46285c519af2 235 }
Bobty 6:46285c519af2 236 closedir(d);
Bobty 11:cec51b430b20 237 RD_DBG("Directory closed\n");
Bobty 6:46285c519af2 238 sprintf(httpHeader,"</ul></body></html>");
Bobty 14:4b83670854f0 239 client.send_all(httpHeader,strlen(httpHeader));
Bobty 6:46285c519af2 240 }
Bobty 6:46285c519af2 241 else
Bobty 12:c14ffd4ec125 242 #endif
Bobty 6:46285c519af2 243 {
Bobty 6:46285c519af2 244 sprintf(filename, "%s%s", _pBaseWebFolder, inFileName);
Bobty 11:cec51b430b20 245 RD_INFO("Filename %s\r\n", filename);
Bobty 6:46285c519af2 246
Bobty 6:46285c519af2 247 FILE* fp = fopen(filename, "r");
Bobty 6:46285c519af2 248 if (fp == NULL)
Bobty 6:46285c519af2 249 {
Bobty 11:cec51b430b20 250 RD_WARN("Filename %s not found\r\n", filename);
Bobty 14:4b83670854f0 251 sprintf(httpHeader,"HTTP/1.1 404 Not Found \r\nContent-Type: text\r\nContent-Length: 0\r\n\r\n");
Bobty 14:4b83670854f0 252 client.send_all(httpHeader,strlen(httpHeader));
Bobty 14:4b83670854f0 253 closeConn = false;
Bobty 6:46285c519af2 254 }
Bobty 6:46285c519af2 255 else
Bobty 6:46285c519af2 256 {
Bobty 11:cec51b430b20 257 RD_INFO("Sending file %s\r\n", filename);
Bobty 14:4b83670854f0 258 fseek(fp, 0L, SEEK_END);
Bobty 14:4b83670854f0 259 int sz = ftell(fp);
Bobty 14:4b83670854f0 260 fseek(fp, 0L, SEEK_SET);
Bobty 14:4b83670854f0 261 sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nContent-Length: %d\r\n\r\n", sz);
Bobty 14:4b83670854f0 262 client.send_all(httpHeader,strlen(httpHeader));
Bobty 14:4b83670854f0 263 // MIME type
Bobty 14:4b83670854f0 264 char *pDot = strrchr(filename, '.');
Bobty 14:4b83670854f0 265 char mimeType[MAX_MIMETYPE_LEN+1];
Bobty 14:4b83670854f0 266 if (pDot && (!strcmp(pDot, ".html") || !strcmp(pDot, ".htm")))
Bobty 14:4b83670854f0 267 strcpy(mimeType, "Content-Type: text/html\r\n");
Bobty 14:4b83670854f0 268 else if (pDot && !strcmp(pDot, ".css"))
Bobty 14:4b83670854f0 269 strcpy(mimeType, "Content-Type: text/css\r\n");
Bobty 14:4b83670854f0 270 if (pDot && !strcmp(pDot, ".js"))
Bobty 14:4b83670854f0 271 strcpy(mimeType, "Content-Type: application/javascript\r\n");
Bobty 14:4b83670854f0 272 // client.send_all(mimeType,strlen(mimeType));
Bobty 14:4b83670854f0 273 RD_INFO("MIME TYPE %s", mimeType);
Bobty 14:4b83670854f0 274 // Read file in blocks and send
Bobty 6:46285c519af2 275 int rdCnt = 0;
Bobty 6:46285c519af2 276 char fileBuf[1024];
Bobty 6:46285c519af2 277 while ((rdCnt = fread(fileBuf, sizeof( char ), 1024, fp)) == 1024)
Bobty 6:46285c519af2 278 {
Bobty 9:35668248199b 279 client.send_all(fileBuf, rdCnt);
Bobty 6:46285c519af2 280 }
Bobty 14:4b83670854f0 281 client.send_all(fileBuf, rdCnt);
Bobty 6:46285c519af2 282 fclose(fp);
Bobty 14:4b83670854f0 283 closeConn = false;
Bobty 6:46285c519af2 284 }
Bobty 6:46285c519af2 285 }
Bobty 14:4b83670854f0 286 return closeConn;
Bobty 6:46285c519af2 287 }
Bobty 6:46285c519af2 288
Bobty 6:46285c519af2 289 void RdWebServer::sendFromCache(RdFileCacheEntry* pCacheEntry, TCPSocketConnection &client, char* httpHeader)
Bobty 6:46285c519af2 290 {
Bobty 11:cec51b430b20 291 RD_INFO("Sending file %s from cache %d bytes\r\n", pCacheEntry->_fileName, pCacheEntry->_nFileLen);
Bobty 6:46285c519af2 292 sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n");
Bobty 14:4b83670854f0 293 client.send_all(httpHeader,strlen(httpHeader));
Bobty 6:46285c519af2 294 char* pMem = pCacheEntry->_pFileContent;
Bobty 6:46285c519af2 295 int nLenLeft = pCacheEntry->_nFileLen;
Bobty 6:46285c519af2 296 int blkSize = 2048;
Bobty 6:46285c519af2 297 while(nLenLeft > 0)
Bobty 6:46285c519af2 298 {
Bobty 6:46285c519af2 299 if (blkSize > nLenLeft)
Bobty 6:46285c519af2 300 blkSize = nLenLeft;
Bobty 6:46285c519af2 301 client.send_all(pMem, blkSize);
Bobty 6:46285c519af2 302 pMem += blkSize;
Bobty 6:46285c519af2 303 nLenLeft -= blkSize;
Bobty 6:46285c519af2 304 }
Bobty 6:46285c519af2 305 }
Bobty 6:46285c519af2 306
Bobty 6:46285c519af2 307 void RdWebServer::handleLocalFileRequest(char* inFileName, char* argStr, TCPSocketConnection &client, char* httpHeader, bool bCacheIfPossible)
Bobty 6:46285c519af2 308 {
Bobty 12:c14ffd4ec125 309
Bobty 12:c14ffd4ec125 310 #ifdef SUPPORT_LOCAL_FILESYSTEM
Bobty 12:c14ffd4ec125 311
Bobty 6:46285c519af2 312 const int HTTPD_MAX_FNAME_LENGTH = 127;
Bobty 6:46285c519af2 313 char localFilename[HTTPD_MAX_FNAME_LENGTH+1];
Bobty 6:46285c519af2 314 char reqFileNameStr[HTTPD_MAX_FNAME_LENGTH+1];
Bobty 6:46285c519af2 315
Bobty 11:cec51b430b20 316 RD_INFO("Requesting local file %s\n\r", inFileName);
Bobty 6:46285c519af2 317 sprintf(reqFileNameStr, "/%s", inFileName);
Bobty 6:46285c519af2 318 sprintf(localFilename, "/local/%s", inFileName);
Bobty 6:46285c519af2 319
Bobty 6:46285c519af2 320 if (bCacheIfPossible)
Bobty 6:46285c519af2 321 {
Bobty 6:46285c519af2 322 // Check if file already cached
Bobty 6:46285c519af2 323 bool bTryToCache = true;
Bobty 6:46285c519af2 324 for (std::vector<RdFileCacheEntry*>::iterator it = _cachedFiles.begin() ; it != _cachedFiles.end(); ++it)
Bobty 6:46285c519af2 325 {
Bobty 6:46285c519af2 326 if (strcmp(inFileName, (*it)->_fileName) == 0)
Bobty 6:46285c519af2 327 {
Bobty 6:46285c519af2 328 if ((*it)->_bCacheValid)
Bobty 6:46285c519af2 329 {
Bobty 6:46285c519af2 330 sendFromCache(*it, client, httpHeader);
Bobty 6:46285c519af2 331 return;
Bobty 6:46285c519af2 332 }
Bobty 6:46285c519af2 333 bTryToCache = false; // don't try to cache as cacheing must have already failed
Bobty 6:46285c519af2 334 }
Bobty 6:46285c519af2 335 }
Bobty 6:46285c519af2 336
Bobty 6:46285c519af2 337 // See if we can cache the file
Bobty 6:46285c519af2 338 if (bTryToCache)
Bobty 6:46285c519af2 339 {
Bobty 6:46285c519af2 340 RdFileCacheEntry* pCacheEntry = new RdFileCacheEntry(inFileName);
Bobty 6:46285c519af2 341 if (pCacheEntry)
Bobty 6:46285c519af2 342 {
Bobty 6:46285c519af2 343 bool bCacheSuccess = pCacheEntry->readLocalFileIntoCache(localFilename);
Bobty 6:46285c519af2 344 // 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 345 _cachedFiles.push_back(pCacheEntry);
Bobty 6:46285c519af2 346 if (bCacheSuccess)
Bobty 6:46285c519af2 347 {
Bobty 6:46285c519af2 348 sendFromCache(pCacheEntry, client, httpHeader);
Bobty 6:46285c519af2 349 return;
Bobty 6:46285c519af2 350 }
Bobty 6:46285c519af2 351 }
Bobty 6:46285c519af2 352 }
Bobty 6:46285c519af2 353 }
Bobty 6:46285c519af2 354
Bobty 6:46285c519af2 355 LocalFileSystem local("local");
Bobty 6:46285c519af2 356
Bobty 6:46285c519af2 357 FILE* fp = fopen(localFilename, "r");
Bobty 6:46285c519af2 358 if (fp == NULL)
Bobty 6:46285c519af2 359 {
Bobty 11:cec51b430b20 360 RD_WARN("Local file %s not found\r\n", localFilename);
Bobty 6:46285c519af2 361 sprintf(httpHeader,"HTTP/1.1 404 Not Found \r\nContent-Type: text\r\nConnection: Close\r\n\r\n");
Bobty 14:4b83670854f0 362 client.send_all(httpHeader,strlen(httpHeader));
Bobty 14:4b83670854f0 363 client.send_all(reqFileNameStr,strlen(reqFileNameStr));
Bobty 6:46285c519af2 364 }
Bobty 6:46285c519af2 365 else
Bobty 6:46285c519af2 366 {
Bobty 11:cec51b430b20 367 RD_INFO("Sending file %s from disk\r\n", localFilename);
Bobty 6:46285c519af2 368 sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n");
Bobty 14:4b83670854f0 369 client.send_all(httpHeader,strlen(httpHeader));
Bobty 6:46285c519af2 370 int rdCnt = 0;
Bobty 6:46285c519af2 371 char fileBuf[2000];
Bobty 6:46285c519af2 372 while ((rdCnt = fread(fileBuf, sizeof( char ), 2000, fp)) == 2000)
Bobty 6:46285c519af2 373 {
Bobty 6:46285c519af2 374 client.send_all(fileBuf, rdCnt);
Bobty 6:46285c519af2 375 }
Bobty 6:46285c519af2 376 client.send_all(fileBuf, rdCnt);
Bobty 6:46285c519af2 377 fclose(fp);
Bobty 6:46285c519af2 378 }
Bobty 12:c14ffd4ec125 379
Bobty 12:c14ffd4ec125 380 #else
Bobty 12:c14ffd4ec125 381
Bobty 12:c14ffd4ec125 382 RD_WARN("Local file system not supported\r\n");
Bobty 12:c14ffd4ec125 383 sprintf(httpHeader,"HTTP/1.1 404 Not Found \r\nContent-Type: text\r\nConnection: Close\r\n\r\n");
Bobty 14:4b83670854f0 384 client.send_all(httpHeader,strlen(httpHeader));
Bobty 12:c14ffd4ec125 385 client.send_all(inFileName,strlen(inFileName));
Bobty 12:c14ffd4ec125 386
Bobty 12:c14ffd4ec125 387 #endif
Bobty 6:46285c519af2 388 }
Bobty 6:46285c519af2 389
Bobty 6:46285c519af2 390 bool RdFileCacheEntry::readLocalFileIntoCache(char* fileName)
Bobty 6:46285c519af2 391 {
Bobty 12:c14ffd4ec125 392 #ifdef SUPPORT_LOCAL_FILESYSTEM
Bobty 12:c14ffd4ec125 393
Bobty 11:cec51b430b20 394 RD_INFO("Reading into cache %s\n\r", fileName);
Bobty 6:46285c519af2 395 LocalFileSystem local("local");
Bobty 6:46285c519af2 396 FILE* fp = fopen(fileName, "r");
Bobty 6:46285c519af2 397 if (fp == NULL)
Bobty 6:46285c519af2 398 {
Bobty 11:cec51b430b20 399 RD_WARN("Failed to open file\n\r");
Bobty 6:46285c519af2 400 return false;
Bobty 6:46285c519af2 401 }
Bobty 11:cec51b430b20 402 RD_DBG("Seeking\n\r");
Bobty 6:46285c519af2 403 fseek(fp, 0, SEEK_END);
Bobty 6:46285c519af2 404 _nFileLen = (int)ftell(fp);
Bobty 6:46285c519af2 405 _pFileContent = new char[_nFileLen];
Bobty 11:cec51b430b20 406 RD_DBG("Len %d Buf %08x\n\r", _nFileLen, _pFileContent);
Bobty 6:46285c519af2 407 if (!_pFileContent)
Bobty 6:46285c519af2 408 {
Bobty 11:cec51b430b20 409 RD_WARN("Failed to allocate %lu\n\r", _nFileLen);
Bobty 6:46285c519af2 410 fclose(fp);
Bobty 6:46285c519af2 411 return false;
Bobty 6:46285c519af2 412 }
Bobty 11:cec51b430b20 413 RD_DBG("Allocated\n\r");
Bobty 6:46285c519af2 414 memset(_pFileContent, 0, _nFileLen);
Bobty 6:46285c519af2 415 fseek(fp, 0, SEEK_SET);
Bobty 6:46285c519af2 416 char* pMem = _pFileContent;
Bobty 6:46285c519af2 417 char fileBuf[100];
Bobty 6:46285c519af2 418 int totCnt = 0;
Bobty 6:46285c519af2 419 int rdCnt = 0;
Bobty 11:cec51b430b20 420 RD_DBG("Reading\n\r");
Bobty 6:46285c519af2 421 while (true)
Bobty 6:46285c519af2 422 {
Bobty 6:46285c519af2 423 int toRead = _nFileLen - totCnt;
Bobty 6:46285c519af2 424 if (toRead > sizeof(fileBuf))
Bobty 6:46285c519af2 425 toRead = sizeof(fileBuf);
Bobty 6:46285c519af2 426 if (toRead <= 0)
Bobty 6:46285c519af2 427 break;
Bobty 6:46285c519af2 428 rdCnt = fread(fileBuf, sizeof(char), toRead, fp);
Bobty 6:46285c519af2 429 if (rdCnt <= 0)
Bobty 6:46285c519af2 430 break;
Bobty 11:cec51b430b20 431 RD_DBG("Read %d tot %d of %d\n\r", rdCnt, totCnt, _nFileLen);
Bobty 6:46285c519af2 432 memcpy(pMem, fileBuf, rdCnt);
Bobty 6:46285c519af2 433 pMem += rdCnt;
Bobty 6:46285c519af2 434 totCnt += rdCnt;
Bobty 6:46285c519af2 435 }
Bobty 11:cec51b430b20 436 RD_DBG("Done read\n\r");
Bobty 6:46285c519af2 437 fclose(fp);
Bobty 11:cec51b430b20 438 RD_DBG("Success in caching %d bytes (read %d)\n\r", _nFileLen, totCnt);
Bobty 6:46285c519af2 439 _bCacheValid = true;
Bobty 0:b5b4d07f7827 440 return true;
Bobty 12:c14ffd4ec125 441 #else
Bobty 12:c14ffd4ec125 442 return false;
Bobty 12:c14ffd4ec125 443 #endif
Bobty 0:b5b4d07f7827 444 }
Bobty 0:b5b4d07f7827 445
Bobty 1:75bb184de749 446 bool RdWebServer::extractCmdArgs(char* buf, char* pCmdStr, int maxCmdStrLen, char* pArgStr, int maxArgStrLen)
Bobty 1:75bb184de749 447 {
Bobty 1:75bb184de749 448 *pCmdStr = '\0';
Bobty 1:75bb184de749 449 *pArgStr = '\0';
Bobty 1:75bb184de749 450 int cmdStrLen = 0;
Bobty 1:75bb184de749 451 int argStrLen = 0;
Bobty 1:75bb184de749 452 if (buf == NULL)
Bobty 1:75bb184de749 453 return false;
Bobty 7:fe7c33f7fbb8 454 // Check for first slash
Bobty 1:75bb184de749 455 char* pSlash1 = strchr(buf, '/');
Bobty 1:75bb184de749 456 if (pSlash1 == NULL)
Bobty 1:75bb184de749 457 return false;
Bobty 1:75bb184de749 458 pSlash1++;
Bobty 7:fe7c33f7fbb8 459 // Extract command
Bobty 1:75bb184de749 460 while(*pSlash1)
Bobty 1:75bb184de749 461 {
Bobty 1:75bb184de749 462 if (cmdStrLen >= maxCmdStrLen-1)
Bobty 1:75bb184de749 463 break;
Bobty 7:fe7c33f7fbb8 464 if ((*pSlash1 == '/') || (*pSlash1 == ' ') || (*pSlash1 == '\n') || (*pSlash1 == '?') || (*pSlash1 == '&'))
Bobty 1:75bb184de749 465 break;
Bobty 1:75bb184de749 466 *pCmdStr++ = *pSlash1++;
Bobty 1:75bb184de749 467 *pCmdStr = '\0';
Bobty 1:75bb184de749 468 cmdStrLen++;
Bobty 1:75bb184de749 469 }
Bobty 1:75bb184de749 470 if ((*pSlash1 == '\0') || (*pSlash1 == ' ') || (*pSlash1 == '\n'))
Bobty 1:75bb184de749 471 return true;
Bobty 7:fe7c33f7fbb8 472 // Now args
Bobty 1:75bb184de749 473 *pSlash1++;
Bobty 1:75bb184de749 474 while(*pSlash1)
Bobty 1:75bb184de749 475 {
Bobty 1:75bb184de749 476 if (argStrLen >= maxArgStrLen-1)
Bobty 1:75bb184de749 477 break;
Bobty 1:75bb184de749 478 if ((*pSlash1 == ' ') || (*pSlash1 == '\n'))
Bobty 1:75bb184de749 479 break;
Bobty 1:75bb184de749 480 *pArgStr++ = *pSlash1++;
Bobty 1:75bb184de749 481 *pArgStr = '\0';
Bobty 1:75bb184de749 482 argStrLen++;
Bobty 1:75bb184de749 483 }
Bobty 1:75bb184de749 484 return true;
Bobty 1:75bb184de749 485 }