FBI FRATER / Mbed 2 deprecated InetTest

Library for Bert van Dam's book "ARM MICROCONTROLLERS" For all chapters with internet.

Dependencies:   mbed

NetServices/services/http/server/HTTPRequestDispatcher.cpp@0:4edb816d21e1, 2015-10-16 (annotated)

Committer:
ICTFBI
Date:
Fri Oct 16 14:28:26 2015 +0000
Revision:
0:4edb816d21e1
Pre-update 16-10-15

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ICTFBI 0:4edb816d21e1 1
ICTFBI 0:4edb816d21e1 2 /*
ICTFBI 0:4edb816d21e1 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
ICTFBI 0:4edb816d21e1 4
ICTFBI 0:4edb816d21e1 5 Permission is hereby granted, free of charge, to any person obtaining a copy
ICTFBI 0:4edb816d21e1 6 of this software and associated documentation files (the "Software"), to deal
ICTFBI 0:4edb816d21e1 7 in the Software without restriction, including without limitation the rights
ICTFBI 0:4edb816d21e1 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
ICTFBI 0:4edb816d21e1 9 copies of the Software, and to permit persons to whom the Software is
ICTFBI 0:4edb816d21e1 10 furnished to do so, subject to the following conditions:
ICTFBI 0:4edb816d21e1 11
ICTFBI 0:4edb816d21e1 12 The above copyright notice and this permission notice shall be included in
ICTFBI 0:4edb816d21e1 13 all copies or substantial portions of the Software.
ICTFBI 0:4edb816d21e1 14
ICTFBI 0:4edb816d21e1 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
ICTFBI 0:4edb816d21e1 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
ICTFBI 0:4edb816d21e1 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
ICTFBI 0:4edb816d21e1 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
ICTFBI 0:4edb816d21e1 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
ICTFBI 0:4edb816d21e1 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
ICTFBI 0:4edb816d21e1 21 THE SOFTWARE.
ICTFBI 0:4edb816d21e1 22 */
ICTFBI 0:4edb816d21e1 23
ICTFBI 0:4edb816d21e1 24 #include "core/netservice.h"
ICTFBI 0:4edb816d21e1 25 #include "HTTPRequestDispatcher.h"
ICTFBI 0:4edb816d21e1 26 #include "HTTPRequestHandler.h"
ICTFBI 0:4edb816d21e1 27 #include <string.h>
ICTFBI 0:4edb816d21e1 28
ICTFBI 0:4edb816d21e1 29 //#define __DEBUG
ICTFBI 0:4edb816d21e1 30 #include "dbg/dbg.h"
ICTFBI 0:4edb816d21e1 31
ICTFBI 0:4edb816d21e1 32 HTTPRequestDispatcher::HTTPRequestDispatcher(HTTPServer* pSvr, TCPSocket* pTCPSocket) : NetService(), m_pSvr(pSvr), m_pTCPSocket(pTCPSocket), m_watchdog(), m_closed(false)
ICTFBI 0:4edb816d21e1 33 {
ICTFBI 0:4edb816d21e1 34 m_pTCPSocket->setOnEvent(this, &HTTPRequestDispatcher::onTCPSocketEvent);
ICTFBI 0:4edb816d21e1 35 m_watchdog.attach_us<HTTPRequestDispatcher>(this, &HTTPRequestDispatcher::onTimeout, HTTP_REQUEST_TIMEOUT * 1000);
ICTFBI 0:4edb816d21e1 36 }
ICTFBI 0:4edb816d21e1 37
ICTFBI 0:4edb816d21e1 38 HTTPRequestDispatcher::~HTTPRequestDispatcher()
ICTFBI 0:4edb816d21e1 39 {
ICTFBI 0:4edb816d21e1 40 close();
ICTFBI 0:4edb816d21e1 41 }
ICTFBI 0:4edb816d21e1 42
ICTFBI 0:4edb816d21e1 43 void HTTPRequestDispatcher::dispatchRequest()
ICTFBI 0:4edb816d21e1 44 {
ICTFBI 0:4edb816d21e1 45 string path;
ICTFBI 0:4edb816d21e1 46 string meth;
ICTFBI 0:4edb816d21e1 47 HTTP_METH methCode;
ICTFBI 0:4edb816d21e1 48
ICTFBI 0:4edb816d21e1 49 DBG("Dispatching req\r\n");
ICTFBI 0:4edb816d21e1 50
ICTFBI 0:4edb816d21e1 51 if( !getRequest(&path, &meth ) )
ICTFBI 0:4edb816d21e1 52 {
ICTFBI 0:4edb816d21e1 53 close();
ICTFBI 0:4edb816d21e1 54 return; //Invalid request
ICTFBI 0:4edb816d21e1 55 }
ICTFBI 0:4edb816d21e1 56
ICTFBI 0:4edb816d21e1 57 if( !meth.compare("GET") )
ICTFBI 0:4edb816d21e1 58 {
ICTFBI 0:4edb816d21e1 59 methCode = HTTP_GET;
ICTFBI 0:4edb816d21e1 60 }
ICTFBI 0:4edb816d21e1 61 else if( !meth.compare("POST") )
ICTFBI 0:4edb816d21e1 62 {
ICTFBI 0:4edb816d21e1 63 methCode = HTTP_POST;
ICTFBI 0:4edb816d21e1 64 }
ICTFBI 0:4edb816d21e1 65 else if( !meth.compare("HEAD") )
ICTFBI 0:4edb816d21e1 66 {
ICTFBI 0:4edb816d21e1 67 methCode = HTTP_HEAD;
ICTFBI 0:4edb816d21e1 68 }
ICTFBI 0:4edb816d21e1 69 else
ICTFBI 0:4edb816d21e1 70 {
ICTFBI 0:4edb816d21e1 71 close(); //Parse error
ICTFBI 0:4edb816d21e1 72 return;
ICTFBI 0:4edb816d21e1 73 }
ICTFBI 0:4edb816d21e1 74
ICTFBI 0:4edb816d21e1 75 DBG("Looking for a handler\r\n");
ICTFBI 0:4edb816d21e1 76
ICTFBI 0:4edb816d21e1 77 map< string, HTTPRequestHandler*(*)(const char*, const char*, TCPSocket*) >::iterator it;
ICTFBI 0:4edb816d21e1 78 // it = m_pSvr->m_lpHandlers.find(rootPath); //We are friends so we can do that
ICTFBI 0:4edb816d21e1 79 // NEW CODE START:
ICTFBI 0:4edb816d21e1 80 int root_len = 0;
ICTFBI 0:4edb816d21e1 81 for (it = m_pSvr->m_lpHandlers.begin(); it != m_pSvr->m_lpHandlers.end(); it++)
ICTFBI 0:4edb816d21e1 82 {
ICTFBI 0:4edb816d21e1 83 DBG("Checking %s...\n", (*it).first.c_str());
ICTFBI 0:4edb816d21e1 84 root_len = (*it).first.length();
ICTFBI 0:4edb816d21e1 85 if ( root_len &&
ICTFBI 0:4edb816d21e1 86 !path.compare( 0, root_len, (*it).first ) &&
ICTFBI 0:4edb816d21e1 87 (path[root_len] == '/' || path[root_len] == '\0'))
ICTFBI 0:4edb816d21e1 88 {
ICTFBI 0:4edb816d21e1 89 DBG("Found (%s)\n", (*it).first.c_str());
ICTFBI 0:4edb816d21e1 90 // Found!
ICTFBI 0:4edb816d21e1 91 break; // for
ICTFBI 0:4edb816d21e1 92 }
ICTFBI 0:4edb816d21e1 93 }
ICTFBI 0:4edb816d21e1 94 // NEW CODE END
ICTFBI 0:4edb816d21e1 95 if((it == m_pSvr->m_lpHandlers.end()) && !(m_pSvr->m_lpHandlers.empty()))
ICTFBI 0:4edb816d21e1 96 {
ICTFBI 0:4edb816d21e1 97 DBG("Using default handler\n");
ICTFBI 0:4edb816d21e1 98 it = m_pSvr->m_lpHandlers.end();
ICTFBI 0:4edb816d21e1 99 it--; //Get the last element
ICTFBI 0:4edb816d21e1 100 if( ! (((*it).first.length() == 0) || !(*it).first.compare("/")) ) //This is not the default handler
ICTFBI 0:4edb816d21e1 101 it = m_pSvr->m_lpHandlers.end();
ICTFBI 0:4edb816d21e1 102 root_len = 0;
ICTFBI 0:4edb816d21e1 103 }
ICTFBI 0:4edb816d21e1 104 if(it == m_pSvr->m_lpHandlers.end())
ICTFBI 0:4edb816d21e1 105 {
ICTFBI 0:4edb816d21e1 106 DBG("No handler found\n");
ICTFBI 0:4edb816d21e1 107 close(); //No handler found
ICTFBI 0:4edb816d21e1 108 return;
ICTFBI 0:4edb816d21e1 109 }
ICTFBI 0:4edb816d21e1 110
ICTFBI 0:4edb816d21e1 111 DBG("Handler found.\r\n");
ICTFBI 0:4edb816d21e1 112
ICTFBI 0:4edb816d21e1 113 //HTTPRequestHandler* pHdlr = (*it).second(rootPath.c_str(), subPath.c_str(), m_pTCPSocket);
ICTFBI 0:4edb816d21e1 114 //NEW CODE 1 LINE:
ICTFBI 0:4edb816d21e1 115 HTTPRequestHandler* pHdlr = (*it).second((*it).first.c_str(), path.c_str() + root_len, m_pTCPSocket);
ICTFBI 0:4edb816d21e1 116 m_pTCPSocket = NULL; //We don't own it anymore
ICTFBI 0:4edb816d21e1 117
ICTFBI 0:4edb816d21e1 118 switch(methCode)
ICTFBI 0:4edb816d21e1 119 {
ICTFBI 0:4edb816d21e1 120 case HTTP_GET:
ICTFBI 0:4edb816d21e1 121 pHdlr->doGet();
ICTFBI 0:4edb816d21e1 122 break;
ICTFBI 0:4edb816d21e1 123 case HTTP_POST:
ICTFBI 0:4edb816d21e1 124 pHdlr->doPost();
ICTFBI 0:4edb816d21e1 125 break;
ICTFBI 0:4edb816d21e1 126 case HTTP_HEAD:
ICTFBI 0:4edb816d21e1 127 pHdlr->doHead();
ICTFBI 0:4edb816d21e1 128 break;
ICTFBI 0:4edb816d21e1 129 }
ICTFBI 0:4edb816d21e1 130
ICTFBI 0:4edb816d21e1 131 DBG("Req handled (or being handled)\r\n");
ICTFBI 0:4edb816d21e1 132 close();
ICTFBI 0:4edb816d21e1 133 }
ICTFBI 0:4edb816d21e1 134
ICTFBI 0:4edb816d21e1 135 void HTTPRequestDispatcher::close() //Close socket and destroy data
ICTFBI 0:4edb816d21e1 136 {
ICTFBI 0:4edb816d21e1 137 if(m_closed)
ICTFBI 0:4edb816d21e1 138 return;
ICTFBI 0:4edb816d21e1 139 m_closed = true; //Prevent recursive calling or calling on an object being destructed by someone else
ICTFBI 0:4edb816d21e1 140 m_watchdog.detach();
ICTFBI 0:4edb816d21e1 141 if(m_pTCPSocket) //m_pTCPSocket Should only be destroyed if ownership not passed to an handler
ICTFBI 0:4edb816d21e1 142 {
ICTFBI 0:4edb816d21e1 143 m_pTCPSocket->resetOnEvent();
ICTFBI 0:4edb816d21e1 144 m_pTCPSocket->close();
ICTFBI 0:4edb816d21e1 145 delete m_pTCPSocket; //This fn might have been called by this socket (through an event), so DO NOT DESTROY IT HERE
ICTFBI 0:4edb816d21e1 146 }
ICTFBI 0:4edb816d21e1 147 NetService::close();
ICTFBI 0:4edb816d21e1 148 }
ICTFBI 0:4edb816d21e1 149
ICTFBI 0:4edb816d21e1 150
ICTFBI 0:4edb816d21e1 151 void HTTPRequestDispatcher::onTimeout() //Connection has timed out
ICTFBI 0:4edb816d21e1 152 {
ICTFBI 0:4edb816d21e1 153 close();
ICTFBI 0:4edb816d21e1 154 }
ICTFBI 0:4edb816d21e1 155
ICTFBI 0:4edb816d21e1 156 bool HTTPRequestDispatcher::getRequest(string* path, string* meth)
ICTFBI 0:4edb816d21e1 157 {
ICTFBI 0:4edb816d21e1 158 char req[128];
ICTFBI 0:4edb816d21e1 159 char c_path[128];
ICTFBI 0:4edb816d21e1 160 char c_meth[128];
ICTFBI 0:4edb816d21e1 161 const int maxLen = 128;
ICTFBI 0:4edb816d21e1 162 char* p = req;
ICTFBI 0:4edb816d21e1 163 //Read Line
ICTFBI 0:4edb816d21e1 164 int ret;
ICTFBI 0:4edb816d21e1 165 int len = 0;
ICTFBI 0:4edb816d21e1 166 for(int i = 0; i < maxLen - 1; i++)
ICTFBI 0:4edb816d21e1 167 {
ICTFBI 0:4edb816d21e1 168 ret = m_pTCPSocket->recv(p, 1);
ICTFBI 0:4edb816d21e1 169 if(!ret)
ICTFBI 0:4edb816d21e1 170 {
ICTFBI 0:4edb816d21e1 171 break;
ICTFBI 0:4edb816d21e1 172 }
ICTFBI 0:4edb816d21e1 173 if( (len > 1) && *(p-1)=='\r' && *p=='\n' )
ICTFBI 0:4edb816d21e1 174 {
ICTFBI 0:4edb816d21e1 175 p--;
ICTFBI 0:4edb816d21e1 176 len-=2;
ICTFBI 0:4edb816d21e1 177 break;
ICTFBI 0:4edb816d21e1 178 }
ICTFBI 0:4edb816d21e1 179 else if( *p=='\n' )
ICTFBI 0:4edb816d21e1 180 {
ICTFBI 0:4edb816d21e1 181 len--;
ICTFBI 0:4edb816d21e1 182 break;
ICTFBI 0:4edb816d21e1 183 }
ICTFBI 0:4edb816d21e1 184 p++;
ICTFBI 0:4edb816d21e1 185 len++;
ICTFBI 0:4edb816d21e1 186 }
ICTFBI 0:4edb816d21e1 187 *p = 0;
ICTFBI 0:4edb816d21e1 188
ICTFBI 0:4edb816d21e1 189 DBG("Parsing request : %s\r\n", req);
ICTFBI 0:4edb816d21e1 190
ICTFBI 0:4edb816d21e1 191 ret = sscanf(req, "%s %s HTTP/%*d.%*d", c_meth, c_path);
ICTFBI 0:4edb816d21e1 192 if(ret !=2)
ICTFBI 0:4edb816d21e1 193 return false;
ICTFBI 0:4edb816d21e1 194
ICTFBI 0:4edb816d21e1 195 *meth = string(c_meth);
ICTFBI 0:4edb816d21e1 196 // NEW CODE (old code removed):
ICTFBI 0:4edb816d21e1 197 *path = string(c_path);
ICTFBI 0:4edb816d21e1 198 return true;
ICTFBI 0:4edb816d21e1 199 }
ICTFBI 0:4edb816d21e1 200
ICTFBI 0:4edb816d21e1 201
ICTFBI 0:4edb816d21e1 202
ICTFBI 0:4edb816d21e1 203 void HTTPRequestDispatcher::onTCPSocketEvent(TCPSocketEvent e)
ICTFBI 0:4edb816d21e1 204 {
ICTFBI 0:4edb816d21e1 205
ICTFBI 0:4edb816d21e1 206 DBG("\r\nEvent %d\r\n", e);
ICTFBI 0:4edb816d21e1 207
ICTFBI 0:4edb816d21e1 208 if(m_closed)
ICTFBI 0:4edb816d21e1 209 {
ICTFBI 0:4edb816d21e1 210 DBG("\r\nWARN: Discarded\r\n");
ICTFBI 0:4edb816d21e1 211 return;
ICTFBI 0:4edb816d21e1 212 }
ICTFBI 0:4edb816d21e1 213
ICTFBI 0:4edb816d21e1 214 switch(e)
ICTFBI 0:4edb816d21e1 215 {
ICTFBI 0:4edb816d21e1 216 case TCPSOCKET_READABLE:
ICTFBI 0:4edb816d21e1 217 m_watchdog.detach();
ICTFBI 0:4edb816d21e1 218 m_pTCPSocket->resetOnEvent();
ICTFBI 0:4edb816d21e1 219 //Req arrived, dispatch :
ICTFBI 0:4edb816d21e1 220 dispatchRequest();
ICTFBI 0:4edb816d21e1 221 break;
ICTFBI 0:4edb816d21e1 222 case TCPSOCKET_CONTIMEOUT:
ICTFBI 0:4edb816d21e1 223 case TCPSOCKET_CONRST:
ICTFBI 0:4edb816d21e1 224 case TCPSOCKET_CONABRT:
ICTFBI 0:4edb816d21e1 225 case TCPSOCKET_ERROR:
ICTFBI 0:4edb816d21e1 226 case TCPSOCKET_DISCONNECTED:
ICTFBI 0:4edb816d21e1 227 close();
ICTFBI 0:4edb816d21e1 228 break;
ICTFBI 0:4edb816d21e1 229 }
ICTFBI 0:4edb816d21e1 230
ICTFBI 0:4edb816d21e1 231 }