Rahol Rajan / NetServices-Traffic

Used in Live Traffic Update Nokia LCD Display Project

Fork of NetServices by Segundo Equipo

services/http/server/impl/FSHandler.cpp@8:92b57208ab99, 2013-03-06 (annotated)

Committer:
rrajan8
Date:
Wed Mar 06 19:07:23 2013 +0000
Revision:
8:92b57208ab99
Parent:
0:ac1725ba162c 
This project utilizes mbed's networking features to display live traffic updates on the Nokia LCD using the MapQuest API's Traffic Web Service.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
segundo 0:ac1725ba162c 1
segundo 0:ac1725ba162c 2 /*
segundo 0:ac1725ba162c 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
segundo 0:ac1725ba162c 4
segundo 0:ac1725ba162c 5 Permission is hereby granted, free of charge, to any person obtaining a copy
segundo 0:ac1725ba162c 6 of this software and associated documentation files (the "Software"), to deal
segundo 0:ac1725ba162c 7 in the Software without restriction, including without limitation the rights
segundo 0:ac1725ba162c 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
segundo 0:ac1725ba162c 9 copies of the Software, and to permit persons to whom the Software is
segundo 0:ac1725ba162c 10 furnished to do so, subject to the following conditions:
segundo 0:ac1725ba162c 11
segundo 0:ac1725ba162c 12 The above copyright notice and this permission notice shall be included in
segundo 0:ac1725ba162c 13 all copies or substantial portions of the Software.
segundo 0:ac1725ba162c 14
segundo 0:ac1725ba162c 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
segundo 0:ac1725ba162c 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
segundo 0:ac1725ba162c 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
segundo 0:ac1725ba162c 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
segundo 0:ac1725ba162c 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
segundo 0:ac1725ba162c 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
segundo 0:ac1725ba162c 21 THE SOFTWARE.
segundo 0:ac1725ba162c 22 */
segundo 0:ac1725ba162c 23
segundo 0:ac1725ba162c 24 #include "FSHandler.h"
segundo 0:ac1725ba162c 25
segundo 0:ac1725ba162c 26 //#define __DEBUG
segundo 0:ac1725ba162c 27 #include "dbg/dbg.h"
segundo 0:ac1725ba162c 28
segundo 0:ac1725ba162c 29 #define CHUNK_SIZE 128
segundo 0:ac1725ba162c 30
segundo 0:ac1725ba162c 31 #define DEFAULT_PAGE "/index.htm"
segundo 0:ac1725ba162c 32
segundo 0:ac1725ba162c 33 FSHandler::FSHandler(const char* rootPath, const char* path, TCPSocket* pTCPSocket) : HTTPRequestHandler(rootPath, path, pTCPSocket), m_err404(false)
segundo 0:ac1725ba162c 34 {}
segundo 0:ac1725ba162c 35
segundo 0:ac1725ba162c 36 FSHandler::~FSHandler()
segundo 0:ac1725ba162c 37 {
segundo 0:ac1725ba162c 38 if(m_fp)
segundo 0:ac1725ba162c 39 fclose(m_fp);
segundo 0:ac1725ba162c 40 DBG("\r\nHandler destroyed\r\n");
segundo 0:ac1725ba162c 41 }
segundo 0:ac1725ba162c 42
segundo 0:ac1725ba162c 43 //static init
segundo 0:ac1725ba162c 44 map<string,string> FSHandler::m_lFsPath = map<string,string>();
segundo 0:ac1725ba162c 45
segundo 0:ac1725ba162c 46 void FSHandler::mount(const string& fsPath, const string& rootPath)
segundo 0:ac1725ba162c 47 {
segundo 0:ac1725ba162c 48 m_lFsPath[rootPath]=fsPath;
segundo 0:ac1725ba162c 49 }
segundo 0:ac1725ba162c 50
segundo 0:ac1725ba162c 51 void FSHandler::doGet()
segundo 0:ac1725ba162c 52 {
segundo 0:ac1725ba162c 53 DBG("\r\nIn FSHandler::doGet() - rootPath=%s, path=%s\r\n", rootPath().c_str(), path().c_str());
segundo 0:ac1725ba162c 54 //FIXME: Translate path to local/path
segundo 0:ac1725ba162c 55 string checkedRootPath = rootPath();
segundo 0:ac1725ba162c 56 if(checkedRootPath.empty())
segundo 0:ac1725ba162c 57 checkedRootPath="/";
segundo 0:ac1725ba162c 58 string filePath = m_lFsPath[checkedRootPath];
segundo 0:ac1725ba162c 59 if (path().size() > 1)
segundo 0:ac1725ba162c 60 {
segundo 0:ac1725ba162c 61 filePath += path();
segundo 0:ac1725ba162c 62 }
segundo 0:ac1725ba162c 63 else
segundo 0:ac1725ba162c 64 {
segundo 0:ac1725ba162c 65 filePath += DEFAULT_PAGE;
segundo 0:ac1725ba162c 66 }
segundo 0:ac1725ba162c 67
segundo 0:ac1725ba162c 68 DBG("Trying to open %s\n", filePath.c_str());
segundo 0:ac1725ba162c 69
segundo 0:ac1725ba162c 70 m_fp = fopen(filePath.c_str(), "r"); //FIXME: if null, error 404
segundo 0:ac1725ba162c 71
segundo 0:ac1725ba162c 72 if(!m_fp)
segundo 0:ac1725ba162c 73 {
segundo 0:ac1725ba162c 74 m_err404 = true;
segundo 0:ac1725ba162c 75 setErrCode(404);
segundo 0:ac1725ba162c 76 const char* msg = "File not found.";
segundo 0:ac1725ba162c 77 setContentLen(strlen(msg));
segundo 0:ac1725ba162c 78 respHeaders()["Content-Type"] = "text/html";
segundo 0:ac1725ba162c 79 respHeaders()["Connection"] = "close";
segundo 0:ac1725ba162c 80 writeData(msg,strlen(msg)); //Only send header
segundo 0:ac1725ba162c 81 DBG("\r\nExit FSHandler::doGet() w Error 404\r\n");
segundo 0:ac1725ba162c 82 return;
segundo 0:ac1725ba162c 83 }
segundo 0:ac1725ba162c 84
segundo 0:ac1725ba162c 85 //Seek EOF to get length
segundo 0:ac1725ba162c 86 fseek(m_fp, 0, SEEK_END);
segundo 0:ac1725ba162c 87 setContentLen( ftell(m_fp) );
segundo 0:ac1725ba162c 88 fseek(m_fp, 0, SEEK_SET); //Goto SOF
segundo 0:ac1725ba162c 89
segundo 0:ac1725ba162c 90 respHeaders()["Connection"] = "close";
segundo 0:ac1725ba162c 91 onWriteable();
segundo 0:ac1725ba162c 92 DBG("\r\nExit SimpleHandler::doGet()\r\n");
segundo 0:ac1725ba162c 93 }
segundo 0:ac1725ba162c 94
segundo 0:ac1725ba162c 95 void FSHandler::doPost()
segundo 0:ac1725ba162c 96 {
segundo 0:ac1725ba162c 97
segundo 0:ac1725ba162c 98 }
segundo 0:ac1725ba162c 99
segundo 0:ac1725ba162c 100 void FSHandler::doHead()
segundo 0:ac1725ba162c 101 {
segundo 0:ac1725ba162c 102
segundo 0:ac1725ba162c 103 }
segundo 0:ac1725ba162c 104
segundo 0:ac1725ba162c 105 void FSHandler::onReadable() //Data has been read
segundo 0:ac1725ba162c 106 {
segundo 0:ac1725ba162c 107
segundo 0:ac1725ba162c 108 }
segundo 0:ac1725ba162c 109
segundo 0:ac1725ba162c 110 void FSHandler::onWriteable() //Data has been written & buf is free
segundo 0:ac1725ba162c 111 {
segundo 0:ac1725ba162c 112 DBG("\r\nFSHandler::onWriteable() event\r\n");
segundo 0:ac1725ba162c 113 if(m_err404)
segundo 0:ac1725ba162c 114 {
segundo 0:ac1725ba162c 115 //Error has been served, now exit
segundo 0:ac1725ba162c 116 close();
segundo 0:ac1725ba162c 117 return;
segundo 0:ac1725ba162c 118 }
segundo 0:ac1725ba162c 119
segundo 0:ac1725ba162c 120 static char rBuf[CHUNK_SIZE];
segundo 0:ac1725ba162c 121 while(true)
segundo 0:ac1725ba162c 122 {
segundo 0:ac1725ba162c 123 int len = fread(rBuf, 1, CHUNK_SIZE, m_fp);
segundo 0:ac1725ba162c 124 if(len>0)
segundo 0:ac1725ba162c 125 {
segundo 0:ac1725ba162c 126 int writtenLen = writeData(rBuf, len);
segundo 0:ac1725ba162c 127 if(writtenLen < 0) //Socket error
segundo 0:ac1725ba162c 128 {
segundo 0:ac1725ba162c 129 DBG("FSHandler: Socket error %d\n", writtenLen);
segundo 0:ac1725ba162c 130 if(writtenLen == TCPSOCKET_MEM)
segundo 0:ac1725ba162c 131 {
segundo 0:ac1725ba162c 132 fseek(m_fp, -len, SEEK_CUR);
segundo 0:ac1725ba162c 133 return; //Wait for the queued TCP segments to be transmitted
segundo 0:ac1725ba162c 134 }
segundo 0:ac1725ba162c 135 else
segundo 0:ac1725ba162c 136 {
segundo 0:ac1725ba162c 137 //This is a critical error
segundo 0:ac1725ba162c 138 close();
segundo 0:ac1725ba162c 139 return;
segundo 0:ac1725ba162c 140 }
segundo 0:ac1725ba162c 141 }
segundo 0:ac1725ba162c 142 else if(writtenLen < len) //Short write, socket's buffer is full
segundo 0:ac1725ba162c 143 {
segundo 0:ac1725ba162c 144 fseek(m_fp, writtenLen - len, SEEK_CUR);
segundo 0:ac1725ba162c 145 return;
segundo 0:ac1725ba162c 146 }
segundo 0:ac1725ba162c 147 }
segundo 0:ac1725ba162c 148 else
segundo 0:ac1725ba162c 149 {
segundo 0:ac1725ba162c 150 close(); //Data written, we can close the connection
segundo 0:ac1725ba162c 151 return;
segundo 0:ac1725ba162c 152 }
segundo 0:ac1725ba162c 153 }
segundo 0:ac1725ba162c 154 }
segundo 0:ac1725ba162c 155
segundo 0:ac1725ba162c 156 void FSHandler::onClose() //Connection is closing
segundo 0:ac1725ba162c 157 {
segundo 0:ac1725ba162c 158 if(m_fp)
segundo 0:ac1725ba162c 159 fclose(m_fp);
segundo 0:ac1725ba162c 160 }