Hendrik Vincent / Mbed 2 deprecated Weerstation

Leest de waarde van een sensor binnen een maakt deze beschikbaar via internet

Dependencies:   NTPClient_NetServices mbed

NetServices/services/http/server/HTTPRequestDispatcher.cpp@0:05ccbd4f84f1, 2013-12-02 (annotated)

Committer:
hendrikvincent
Date:
Mon Dec 02 09:01:23 2013 +0000
Revision:
0:05ccbd4f84f1
eerste programma;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hendrikvincent 0:05ccbd4f84f1 1
hendrikvincent 0:05ccbd4f84f1 2 /*
hendrikvincent 0:05ccbd4f84f1 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
hendrikvincent 0:05ccbd4f84f1 4
hendrikvincent 0:05ccbd4f84f1 5 Permission is hereby granted, free of charge, to any person obtaining a copy
hendrikvincent 0:05ccbd4f84f1 6 of this software and associated documentation files (the "Software"), to deal
hendrikvincent 0:05ccbd4f84f1 7 in the Software without restriction, including without limitation the rights
hendrikvincent 0:05ccbd4f84f1 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
hendrikvincent 0:05ccbd4f84f1 9 copies of the Software, and to permit persons to whom the Software is
hendrikvincent 0:05ccbd4f84f1 10 furnished to do so, subject to the following conditions:
hendrikvincent 0:05ccbd4f84f1 11
hendrikvincent 0:05ccbd4f84f1 12 The above copyright notice and this permission notice shall be included in
hendrikvincent 0:05ccbd4f84f1 13 all copies or substantial portions of the Software.
hendrikvincent 0:05ccbd4f84f1 14
hendrikvincent 0:05ccbd4f84f1 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
hendrikvincent 0:05ccbd4f84f1 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
hendrikvincent 0:05ccbd4f84f1 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
hendrikvincent 0:05ccbd4f84f1 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
hendrikvincent 0:05ccbd4f84f1 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
hendrikvincent 0:05ccbd4f84f1 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
hendrikvincent 0:05ccbd4f84f1 21 THE SOFTWARE.
hendrikvincent 0:05ccbd4f84f1 22 */
hendrikvincent 0:05ccbd4f84f1 23
hendrikvincent 0:05ccbd4f84f1 24 #include "core/netservice.h"
hendrikvincent 0:05ccbd4f84f1 25 #include "HTTPRequestDispatcher.h"
hendrikvincent 0:05ccbd4f84f1 26 #include "HTTPRequestHandler.h"
hendrikvincent 0:05ccbd4f84f1 27 #include <string.h>
hendrikvincent 0:05ccbd4f84f1 28
hendrikvincent 0:05ccbd4f84f1 29 //#define __DEBUG
hendrikvincent 0:05ccbd4f84f1 30 #include "dbg/dbg.h"
hendrikvincent 0:05ccbd4f84f1 31
hendrikvincent 0:05ccbd4f84f1 32 HTTPRequestDispatcher::HTTPRequestDispatcher(HTTPServer* pSvr, TCPSocket* pTCPSocket) : NetService(), m_pSvr(pSvr), m_pTCPSocket(pTCPSocket), m_watchdog(), m_closed(false)
hendrikvincent 0:05ccbd4f84f1 33 {
hendrikvincent 0:05ccbd4f84f1 34 m_pTCPSocket->setOnEvent(this, &HTTPRequestDispatcher::onTCPSocketEvent);
hendrikvincent 0:05ccbd4f84f1 35 m_watchdog.attach_us<HTTPRequestDispatcher>(this, &HTTPRequestDispatcher::onTimeout, HTTP_REQUEST_TIMEOUT * 1000);
hendrikvincent 0:05ccbd4f84f1 36 }
hendrikvincent 0:05ccbd4f84f1 37
hendrikvincent 0:05ccbd4f84f1 38 HTTPRequestDispatcher::~HTTPRequestDispatcher()
hendrikvincent 0:05ccbd4f84f1 39 {
hendrikvincent 0:05ccbd4f84f1 40 close();
hendrikvincent 0:05ccbd4f84f1 41 }
hendrikvincent 0:05ccbd4f84f1 42
hendrikvincent 0:05ccbd4f84f1 43 void HTTPRequestDispatcher::dispatchRequest()
hendrikvincent 0:05ccbd4f84f1 44 {
hendrikvincent 0:05ccbd4f84f1 45 string path;
hendrikvincent 0:05ccbd4f84f1 46 string meth;
hendrikvincent 0:05ccbd4f84f1 47 HTTP_METH methCode;
hendrikvincent 0:05ccbd4f84f1 48
hendrikvincent 0:05ccbd4f84f1 49 DBG("Dispatching req\r\n");
hendrikvincent 0:05ccbd4f84f1 50
hendrikvincent 0:05ccbd4f84f1 51 if( !getRequest(&path, &meth ) )
hendrikvincent 0:05ccbd4f84f1 52 {
hendrikvincent 0:05ccbd4f84f1 53 close();
hendrikvincent 0:05ccbd4f84f1 54 return; //Invalid request
hendrikvincent 0:05ccbd4f84f1 55 }
hendrikvincent 0:05ccbd4f84f1 56
hendrikvincent 0:05ccbd4f84f1 57 if( !meth.compare("GET") )
hendrikvincent 0:05ccbd4f84f1 58 {
hendrikvincent 0:05ccbd4f84f1 59 methCode = HTTP_GET;
hendrikvincent 0:05ccbd4f84f1 60 }
hendrikvincent 0:05ccbd4f84f1 61 else if( !meth.compare("POST") )
hendrikvincent 0:05ccbd4f84f1 62 {
hendrikvincent 0:05ccbd4f84f1 63 methCode = HTTP_POST;
hendrikvincent 0:05ccbd4f84f1 64 }
hendrikvincent 0:05ccbd4f84f1 65 else if( !meth.compare("HEAD") )
hendrikvincent 0:05ccbd4f84f1 66 {
hendrikvincent 0:05ccbd4f84f1 67 methCode = HTTP_HEAD;
hendrikvincent 0:05ccbd4f84f1 68 }
hendrikvincent 0:05ccbd4f84f1 69 else
hendrikvincent 0:05ccbd4f84f1 70 {
hendrikvincent 0:05ccbd4f84f1 71 close(); //Parse error
hendrikvincent 0:05ccbd4f84f1 72 return;
hendrikvincent 0:05ccbd4f84f1 73 }
hendrikvincent 0:05ccbd4f84f1 74
hendrikvincent 0:05ccbd4f84f1 75 DBG("Looking for a handler\r\n");
hendrikvincent 0:05ccbd4f84f1 76
hendrikvincent 0:05ccbd4f84f1 77 map< string, HTTPRequestHandler*(*)(const char*, const char*, TCPSocket*) >::iterator it;
hendrikvincent 0:05ccbd4f84f1 78 // it = m_pSvr->m_lpHandlers.find(rootPath); //We are friends so we can do that
hendrikvincent 0:05ccbd4f84f1 79 // NEW CODE START:
hendrikvincent 0:05ccbd4f84f1 80 int root_len = 0;
hendrikvincent 0:05ccbd4f84f1 81 for (it = m_pSvr->m_lpHandlers.begin(); it != m_pSvr->m_lpHandlers.end(); it++)
hendrikvincent 0:05ccbd4f84f1 82 {
hendrikvincent 0:05ccbd4f84f1 83 DBG("Checking %s...\n", (*it).first.c_str());
hendrikvincent 0:05ccbd4f84f1 84 root_len = (*it).first.length();
hendrikvincent 0:05ccbd4f84f1 85 if ( root_len &&
hendrikvincent 0:05ccbd4f84f1 86 !path.compare( 0, root_len, (*it).first ) &&
hendrikvincent 0:05ccbd4f84f1 87 (path[root_len] == '/' || path[root_len] == '\0'))
hendrikvincent 0:05ccbd4f84f1 88 {
hendrikvincent 0:05ccbd4f84f1 89 DBG("Found (%s)\n", (*it).first.c_str());
hendrikvincent 0:05ccbd4f84f1 90 // Found!
hendrikvincent 0:05ccbd4f84f1 91 break; // for
hendrikvincent 0:05ccbd4f84f1 92 }
hendrikvincent 0:05ccbd4f84f1 93 }
hendrikvincent 0:05ccbd4f84f1 94 // NEW CODE END
hendrikvincent 0:05ccbd4f84f1 95 if((it == m_pSvr->m_lpHandlers.end()) && !(m_pSvr->m_lpHandlers.empty()))
hendrikvincent 0:05ccbd4f84f1 96 {
hendrikvincent 0:05ccbd4f84f1 97 DBG("Using default handler\n");
hendrikvincent 0:05ccbd4f84f1 98 it = m_pSvr->m_lpHandlers.end();
hendrikvincent 0:05ccbd4f84f1 99 it--; //Get the last element
hendrikvincent 0:05ccbd4f84f1 100 if( ! (((*it).first.length() == 0) || !(*it).first.compare("/")) ) //This is not the default handler
hendrikvincent 0:05ccbd4f84f1 101 it = m_pSvr->m_lpHandlers.end();
hendrikvincent 0:05ccbd4f84f1 102 root_len = 0;
hendrikvincent 0:05ccbd4f84f1 103 }
hendrikvincent 0:05ccbd4f84f1 104 if(it == m_pSvr->m_lpHandlers.end())
hendrikvincent 0:05ccbd4f84f1 105 {
hendrikvincent 0:05ccbd4f84f1 106 DBG("No handler found\n");
hendrikvincent 0:05ccbd4f84f1 107 close(); //No handler found
hendrikvincent 0:05ccbd4f84f1 108 return;
hendrikvincent 0:05ccbd4f84f1 109 }
hendrikvincent 0:05ccbd4f84f1 110
hendrikvincent 0:05ccbd4f84f1 111 DBG("Handler found.\r\n");
hendrikvincent 0:05ccbd4f84f1 112
hendrikvincent 0:05ccbd4f84f1 113 //HTTPRequestHandler* pHdlr = (*it).second(rootPath.c_str(), subPath.c_str(), m_pTCPSocket);
hendrikvincent 0:05ccbd4f84f1 114 //NEW CODE 1 LINE:
hendrikvincent 0:05ccbd4f84f1 115 HTTPRequestHandler* pHdlr = (*it).second((*it).first.c_str(), path.c_str() + root_len, m_pTCPSocket);
hendrikvincent 0:05ccbd4f84f1 116 m_pTCPSocket = NULL; //We don't own it anymore
hendrikvincent 0:05ccbd4f84f1 117
hendrikvincent 0:05ccbd4f84f1 118 switch(methCode)
hendrikvincent 0:05ccbd4f84f1 119 {
hendrikvincent 0:05ccbd4f84f1 120 case HTTP_GET:
hendrikvincent 0:05ccbd4f84f1 121 pHdlr->doGet();
hendrikvincent 0:05ccbd4f84f1 122 break;
hendrikvincent 0:05ccbd4f84f1 123 case HTTP_POST:
hendrikvincent 0:05ccbd4f84f1 124 pHdlr->doPost();
hendrikvincent 0:05ccbd4f84f1 125 break;
hendrikvincent 0:05ccbd4f84f1 126 case HTTP_HEAD:
hendrikvincent 0:05ccbd4f84f1 127 pHdlr->doHead();
hendrikvincent 0:05ccbd4f84f1 128 break;
hendrikvincent 0:05ccbd4f84f1 129 }
hendrikvincent 0:05ccbd4f84f1 130
hendrikvincent 0:05ccbd4f84f1 131 DBG("Req handled (or being handled)\r\n");
hendrikvincent 0:05ccbd4f84f1 132 close();
hendrikvincent 0:05ccbd4f84f1 133 }
hendrikvincent 0:05ccbd4f84f1 134
hendrikvincent 0:05ccbd4f84f1 135 void HTTPRequestDispatcher::close() //Close socket and destroy data
hendrikvincent 0:05ccbd4f84f1 136 {
hendrikvincent 0:05ccbd4f84f1 137 if(m_closed)
hendrikvincent 0:05ccbd4f84f1 138 return;
hendrikvincent 0:05ccbd4f84f1 139 m_closed = true; //Prevent recursive calling or calling on an object being destructed by someone else
hendrikvincent 0:05ccbd4f84f1 140 m_watchdog.detach();
hendrikvincent 0:05ccbd4f84f1 141 if(m_pTCPSocket) //m_pTCPSocket Should only be destroyed if ownership not passed to an handler
hendrikvincent 0:05ccbd4f84f1 142 {
hendrikvincent 0:05ccbd4f84f1 143 m_pTCPSocket->resetOnEvent();
hendrikvincent 0:05ccbd4f84f1 144 m_pTCPSocket->close();
hendrikvincent 0:05ccbd4f84f1 145 delete m_pTCPSocket; //This fn might have been called by this socket (through an event), so DO NOT DESTROY IT HERE
hendrikvincent 0:05ccbd4f84f1 146 }
hendrikvincent 0:05ccbd4f84f1 147 NetService::close();
hendrikvincent 0:05ccbd4f84f1 148 }
hendrikvincent 0:05ccbd4f84f1 149
hendrikvincent 0:05ccbd4f84f1 150
hendrikvincent 0:05ccbd4f84f1 151 void HTTPRequestDispatcher::onTimeout() //Connection has timed out
hendrikvincent 0:05ccbd4f84f1 152 {
hendrikvincent 0:05ccbd4f84f1 153 close();
hendrikvincent 0:05ccbd4f84f1 154 }
hendrikvincent 0:05ccbd4f84f1 155
hendrikvincent 0:05ccbd4f84f1 156 bool HTTPRequestDispatcher::getRequest(string* path, string* meth)
hendrikvincent 0:05ccbd4f84f1 157 {
hendrikvincent 0:05ccbd4f84f1 158 char req[128];
hendrikvincent 0:05ccbd4f84f1 159 char c_path[128];
hendrikvincent 0:05ccbd4f84f1 160 char c_meth[128];
hendrikvincent 0:05ccbd4f84f1 161 const int maxLen = 128;
hendrikvincent 0:05ccbd4f84f1 162 char* p = req;
hendrikvincent 0:05ccbd4f84f1 163 //Read Line
hendrikvincent 0:05ccbd4f84f1 164 int ret;
hendrikvincent 0:05ccbd4f84f1 165 int len = 0;
hendrikvincent 0:05ccbd4f84f1 166 for(int i = 0; i < maxLen - 1; i++)
hendrikvincent 0:05ccbd4f84f1 167 {
hendrikvincent 0:05ccbd4f84f1 168 ret = m_pTCPSocket->recv(p, 1);
hendrikvincent 0:05ccbd4f84f1 169 if(!ret)
hendrikvincent 0:05ccbd4f84f1 170 {
hendrikvincent 0:05ccbd4f84f1 171 break;
hendrikvincent 0:05ccbd4f84f1 172 }
hendrikvincent 0:05ccbd4f84f1 173 if( (len > 1) && *(p-1)=='\r' && *p=='\n' )
hendrikvincent 0:05ccbd4f84f1 174 {
hendrikvincent 0:05ccbd4f84f1 175 p--;
hendrikvincent 0:05ccbd4f84f1 176 len-=2;
hendrikvincent 0:05ccbd4f84f1 177 break;
hendrikvincent 0:05ccbd4f84f1 178 }
hendrikvincent 0:05ccbd4f84f1 179 else if( *p=='\n' )
hendrikvincent 0:05ccbd4f84f1 180 {
hendrikvincent 0:05ccbd4f84f1 181 len--;
hendrikvincent 0:05ccbd4f84f1 182 break;
hendrikvincent 0:05ccbd4f84f1 183 }
hendrikvincent 0:05ccbd4f84f1 184 p++;
hendrikvincent 0:05ccbd4f84f1 185 len++;
hendrikvincent 0:05ccbd4f84f1 186 }
hendrikvincent 0:05ccbd4f84f1 187 *p = 0;
hendrikvincent 0:05ccbd4f84f1 188
hendrikvincent 0:05ccbd4f84f1 189 DBG("Parsing request : %s\r\n", req);
hendrikvincent 0:05ccbd4f84f1 190
hendrikvincent 0:05ccbd4f84f1 191 ret = sscanf(req, "%s %s HTTP/%*d.%*d", c_meth, c_path);
hendrikvincent 0:05ccbd4f84f1 192 if(ret !=2)
hendrikvincent 0:05ccbd4f84f1 193 return false;
hendrikvincent 0:05ccbd4f84f1 194
hendrikvincent 0:05ccbd4f84f1 195 *meth = string(c_meth);
hendrikvincent 0:05ccbd4f84f1 196 // NEW CODE (old code removed):
hendrikvincent 0:05ccbd4f84f1 197 *path = string(c_path);
hendrikvincent 0:05ccbd4f84f1 198 return true;
hendrikvincent 0:05ccbd4f84f1 199 }
hendrikvincent 0:05ccbd4f84f1 200
hendrikvincent 0:05ccbd4f84f1 201
hendrikvincent 0:05ccbd4f84f1 202
hendrikvincent 0:05ccbd4f84f1 203 void HTTPRequestDispatcher::onTCPSocketEvent(TCPSocketEvent e)
hendrikvincent 0:05ccbd4f84f1 204 {
hendrikvincent 0:05ccbd4f84f1 205
hendrikvincent 0:05ccbd4f84f1 206 DBG("\r\nEvent %d\r\n", e);
hendrikvincent 0:05ccbd4f84f1 207
hendrikvincent 0:05ccbd4f84f1 208 if(m_closed)
hendrikvincent 0:05ccbd4f84f1 209 {
hendrikvincent 0:05ccbd4f84f1 210 DBG("\r\nWARN: Discarded\r\n");
hendrikvincent 0:05ccbd4f84f1 211 return;
hendrikvincent 0:05ccbd4f84f1 212 }
hendrikvincent 0:05ccbd4f84f1 213
hendrikvincent 0:05ccbd4f84f1 214 switch(e)
hendrikvincent 0:05ccbd4f84f1 215 {
hendrikvincent 0:05ccbd4f84f1 216 case TCPSOCKET_READABLE:
hendrikvincent 0:05ccbd4f84f1 217 m_watchdog.detach();
hendrikvincent 0:05ccbd4f84f1 218 m_pTCPSocket->resetOnEvent();
hendrikvincent 0:05ccbd4f84f1 219 //Req arrived, dispatch :
hendrikvincent 0:05ccbd4f84f1 220 dispatchRequest();
hendrikvincent 0:05ccbd4f84f1 221 break;
hendrikvincent 0:05ccbd4f84f1 222 case TCPSOCKET_CONTIMEOUT:
hendrikvincent 0:05ccbd4f84f1 223 case TCPSOCKET_CONRST:
hendrikvincent 0:05ccbd4f84f1 224 case TCPSOCKET_CONABRT:
hendrikvincent 0:05ccbd4f84f1 225 case TCPSOCKET_ERROR:
hendrikvincent 0:05ccbd4f84f1 226 case TCPSOCKET_DISCONNECTED:
hendrikvincent 0:05ccbd4f84f1 227 close();
hendrikvincent 0:05ccbd4f84f1 228 break;
hendrikvincent 0:05ccbd4f84f1 229 }
hendrikvincent 0:05ccbd4f84f1 230
hendrikvincent 0:05ccbd4f84f1 231 }