joshua Elsdon / Mbed 2 deprecated Email2Screen

Mac addr added ICRS

Dependencies:   mbed

Fork of Email2Screen by Oliver Mattos

NetServicesProxy/services/http/server/HTTPRequestDispatcher.cpp@1:b38b745d1ea8, 2013-11-20 (annotated)

Committer:
je310
Date:
Wed Nov 20 21:22:22 2013 +0000
Revision:
1:b38b745d1ea8
Parent:
0:1619a6b826d7 
This is a maced version of olivers code ICRS

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Hello1024 0:1619a6b826d7 1
Hello1024 0:1619a6b826d7 2 /*
Hello1024 0:1619a6b826d7 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
Hello1024 0:1619a6b826d7 4
Hello1024 0:1619a6b826d7 5 Permission is hereby granted, free of charge, to any person obtaining a copy
Hello1024 0:1619a6b826d7 6 of this software and associated documentation files (the "Software"), to deal
Hello1024 0:1619a6b826d7 7 in the Software without restriction, including without limitation the rights
Hello1024 0:1619a6b826d7 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
Hello1024 0:1619a6b826d7 9 copies of the Software, and to permit persons to whom the Software is
Hello1024 0:1619a6b826d7 10 furnished to do so, subject to the following conditions:
Hello1024 0:1619a6b826d7 11
Hello1024 0:1619a6b826d7 12 The above copyright notice and this permission notice shall be included in
Hello1024 0:1619a6b826d7 13 all copies or substantial portions of the Software.
Hello1024 0:1619a6b826d7 14
Hello1024 0:1619a6b826d7 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
Hello1024 0:1619a6b826d7 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
Hello1024 0:1619a6b826d7 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
Hello1024 0:1619a6b826d7 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
Hello1024 0:1619a6b826d7 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Hello1024 0:1619a6b826d7 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
Hello1024 0:1619a6b826d7 21 THE SOFTWARE.
Hello1024 0:1619a6b826d7 22 */
Hello1024 0:1619a6b826d7 23
Hello1024 0:1619a6b826d7 24 #include "core/netservice.h"
Hello1024 0:1619a6b826d7 25 #include "HTTPRequestDispatcher.h"
Hello1024 0:1619a6b826d7 26 #include "HTTPRequestHandler.h"
Hello1024 0:1619a6b826d7 27 #include <string.h>
Hello1024 0:1619a6b826d7 28
Hello1024 0:1619a6b826d7 29 //#define __DEBUG
Hello1024 0:1619a6b826d7 30 #include "dbg/dbg.h"
Hello1024 0:1619a6b826d7 31
Hello1024 0:1619a6b826d7 32 HTTPRequestDispatcher::HTTPRequestDispatcher(HTTPServer* pSvr, TCPSocket* pTCPSocket) : NetService(), m_pSvr(pSvr), m_pTCPSocket(pTCPSocket), m_watchdog(), m_closed(false)
Hello1024 0:1619a6b826d7 33 {
Hello1024 0:1619a6b826d7 34 m_pTCPSocket->setOnEvent(this, &HTTPRequestDispatcher::onTCPSocketEvent);
Hello1024 0:1619a6b826d7 35 m_watchdog.attach_us<HTTPRequestDispatcher>(this, &HTTPRequestDispatcher::onTimeout, HTTP_REQUEST_TIMEOUT * 1000);
Hello1024 0:1619a6b826d7 36 }
Hello1024 0:1619a6b826d7 37
Hello1024 0:1619a6b826d7 38 HTTPRequestDispatcher::~HTTPRequestDispatcher()
Hello1024 0:1619a6b826d7 39 {
Hello1024 0:1619a6b826d7 40 close();
Hello1024 0:1619a6b826d7 41 }
Hello1024 0:1619a6b826d7 42
Hello1024 0:1619a6b826d7 43 void HTTPRequestDispatcher::dispatchRequest()
Hello1024 0:1619a6b826d7 44 {
Hello1024 0:1619a6b826d7 45 string path;
Hello1024 0:1619a6b826d7 46 string meth;
Hello1024 0:1619a6b826d7 47 HTTP_METH methCode;
Hello1024 0:1619a6b826d7 48
Hello1024 0:1619a6b826d7 49 DBG("Dispatching req\r\n");
Hello1024 0:1619a6b826d7 50
Hello1024 0:1619a6b826d7 51 if( !getRequest(&path, &meth ) )
Hello1024 0:1619a6b826d7 52 {
Hello1024 0:1619a6b826d7 53 close();
Hello1024 0:1619a6b826d7 54 return; //Invalid request
Hello1024 0:1619a6b826d7 55 }
Hello1024 0:1619a6b826d7 56
Hello1024 0:1619a6b826d7 57 if( !meth.compare("GET") )
Hello1024 0:1619a6b826d7 58 {
Hello1024 0:1619a6b826d7 59 methCode = HTTP_GET;
Hello1024 0:1619a6b826d7 60 }
Hello1024 0:1619a6b826d7 61 else if( !meth.compare("POST") )
Hello1024 0:1619a6b826d7 62 {
Hello1024 0:1619a6b826d7 63 methCode = HTTP_POST;
Hello1024 0:1619a6b826d7 64 }
Hello1024 0:1619a6b826d7 65 else if( !meth.compare("HEAD") )
Hello1024 0:1619a6b826d7 66 {
Hello1024 0:1619a6b826d7 67 methCode = HTTP_HEAD;
Hello1024 0:1619a6b826d7 68 }
Hello1024 0:1619a6b826d7 69 else
Hello1024 0:1619a6b826d7 70 {
Hello1024 0:1619a6b826d7 71 close(); //Parse error
Hello1024 0:1619a6b826d7 72 return;
Hello1024 0:1619a6b826d7 73 }
Hello1024 0:1619a6b826d7 74
Hello1024 0:1619a6b826d7 75 DBG("Looking for a handler\r\n");
Hello1024 0:1619a6b826d7 76
Hello1024 0:1619a6b826d7 77 map< string, HTTPRequestHandler*(*)(const char*, const char*, TCPSocket*) >::iterator it;
Hello1024 0:1619a6b826d7 78 // it = m_pSvr->m_lpHandlers.find(rootPath); //We are friends so we can do that
Hello1024 0:1619a6b826d7 79 // NEW CODE START:
Hello1024 0:1619a6b826d7 80 int root_len = 0;
Hello1024 0:1619a6b826d7 81 for (it = m_pSvr->m_lpHandlers.begin(); it != m_pSvr->m_lpHandlers.end(); it++)
Hello1024 0:1619a6b826d7 82 {
Hello1024 0:1619a6b826d7 83 DBG("Checking %s...\n", (*it).first.c_str());
Hello1024 0:1619a6b826d7 84 root_len = (*it).first.length();
Hello1024 0:1619a6b826d7 85 if ( root_len &&
Hello1024 0:1619a6b826d7 86 !path.compare( 0, root_len, (*it).first ) &&
Hello1024 0:1619a6b826d7 87 (path[root_len] == '/' || path[root_len] == '\0'))
Hello1024 0:1619a6b826d7 88 {
Hello1024 0:1619a6b826d7 89 DBG("Found (%s)\n", (*it).first.c_str());
Hello1024 0:1619a6b826d7 90 // Found!
Hello1024 0:1619a6b826d7 91 break; // for
Hello1024 0:1619a6b826d7 92 }
Hello1024 0:1619a6b826d7 93 }
Hello1024 0:1619a6b826d7 94 // NEW CODE END
Hello1024 0:1619a6b826d7 95 if((it == m_pSvr->m_lpHandlers.end()) && !(m_pSvr->m_lpHandlers.empty()))
Hello1024 0:1619a6b826d7 96 {
Hello1024 0:1619a6b826d7 97 DBG("Using default handler\n");
Hello1024 0:1619a6b826d7 98 it = m_pSvr->m_lpHandlers.end();
Hello1024 0:1619a6b826d7 99 it--; //Get the last element
Hello1024 0:1619a6b826d7 100 if( ! (((*it).first.length() == 0) || !(*it).first.compare("/")) ) //This is not the default handler
Hello1024 0:1619a6b826d7 101 it = m_pSvr->m_lpHandlers.end();
Hello1024 0:1619a6b826d7 102 root_len = 0;
Hello1024 0:1619a6b826d7 103 }
Hello1024 0:1619a6b826d7 104 if(it == m_pSvr->m_lpHandlers.end())
Hello1024 0:1619a6b826d7 105 {
Hello1024 0:1619a6b826d7 106 DBG("No handler found\n");
Hello1024 0:1619a6b826d7 107 close(); //No handler found
Hello1024 0:1619a6b826d7 108 return;
Hello1024 0:1619a6b826d7 109 }
Hello1024 0:1619a6b826d7 110
Hello1024 0:1619a6b826d7 111 DBG("Handler found.\r\n");
Hello1024 0:1619a6b826d7 112
Hello1024 0:1619a6b826d7 113 //HTTPRequestHandler* pHdlr = (*it).second(rootPath.c_str(), subPath.c_str(), m_pTCPSocket);
Hello1024 0:1619a6b826d7 114 //NEW CODE 1 LINE:
Hello1024 0:1619a6b826d7 115 HTTPRequestHandler* pHdlr = (*it).second((*it).first.c_str(), path.c_str() + root_len, m_pTCPSocket);
Hello1024 0:1619a6b826d7 116 m_pTCPSocket = NULL; //We don't own it anymore
Hello1024 0:1619a6b826d7 117
Hello1024 0:1619a6b826d7 118 switch(methCode)
Hello1024 0:1619a6b826d7 119 {
Hello1024 0:1619a6b826d7 120 case HTTP_GET:
Hello1024 0:1619a6b826d7 121 pHdlr->doGet();
Hello1024 0:1619a6b826d7 122 break;
Hello1024 0:1619a6b826d7 123 case HTTP_POST:
Hello1024 0:1619a6b826d7 124 pHdlr->doPost();
Hello1024 0:1619a6b826d7 125 break;
Hello1024 0:1619a6b826d7 126 case HTTP_HEAD:
Hello1024 0:1619a6b826d7 127 pHdlr->doHead();
Hello1024 0:1619a6b826d7 128 break;
Hello1024 0:1619a6b826d7 129 }
Hello1024 0:1619a6b826d7 130
Hello1024 0:1619a6b826d7 131 DBG("Req handled (or being handled)\r\n");
Hello1024 0:1619a6b826d7 132 close();
Hello1024 0:1619a6b826d7 133 }
Hello1024 0:1619a6b826d7 134
Hello1024 0:1619a6b826d7 135 void HTTPRequestDispatcher::close() //Close socket and destroy data
Hello1024 0:1619a6b826d7 136 {
Hello1024 0:1619a6b826d7 137 if(m_closed)
Hello1024 0:1619a6b826d7 138 return;
Hello1024 0:1619a6b826d7 139 m_closed = true; //Prevent recursive calling or calling on an object being destructed by someone else
Hello1024 0:1619a6b826d7 140 m_watchdog.detach();
Hello1024 0:1619a6b826d7 141 if(m_pTCPSocket) //m_pTCPSocket Should only be destroyed if ownership not passed to an handler
Hello1024 0:1619a6b826d7 142 {
Hello1024 0:1619a6b826d7 143 m_pTCPSocket->resetOnEvent();
Hello1024 0:1619a6b826d7 144 m_pTCPSocket->close();
Hello1024 0:1619a6b826d7 145 delete m_pTCPSocket; //This fn might have been called by this socket (through an event), so DO NOT DESTROY IT HERE
Hello1024 0:1619a6b826d7 146 }
Hello1024 0:1619a6b826d7 147 NetService::close();
Hello1024 0:1619a6b826d7 148 }
Hello1024 0:1619a6b826d7 149
Hello1024 0:1619a6b826d7 150
Hello1024 0:1619a6b826d7 151 void HTTPRequestDispatcher::onTimeout() //Connection has timed out
Hello1024 0:1619a6b826d7 152 {
Hello1024 0:1619a6b826d7 153 close();
Hello1024 0:1619a6b826d7 154 }
Hello1024 0:1619a6b826d7 155
Hello1024 0:1619a6b826d7 156 bool HTTPRequestDispatcher::getRequest(string* path, string* meth)
Hello1024 0:1619a6b826d7 157 {
Hello1024 0:1619a6b826d7 158 char req[128];
Hello1024 0:1619a6b826d7 159 char c_path[128];
Hello1024 0:1619a6b826d7 160 char c_meth[128];
Hello1024 0:1619a6b826d7 161 const int maxLen = 128;
Hello1024 0:1619a6b826d7 162 char* p = req;
Hello1024 0:1619a6b826d7 163 //Read Line
Hello1024 0:1619a6b826d7 164 int ret;
Hello1024 0:1619a6b826d7 165 int len = 0;
Hello1024 0:1619a6b826d7 166 for(int i = 0; i < maxLen - 1; i++)
Hello1024 0:1619a6b826d7 167 {
Hello1024 0:1619a6b826d7 168 ret = m_pTCPSocket->recv(p, 1);
Hello1024 0:1619a6b826d7 169 if(!ret)
Hello1024 0:1619a6b826d7 170 {
Hello1024 0:1619a6b826d7 171 break;
Hello1024 0:1619a6b826d7 172 }
Hello1024 0:1619a6b826d7 173 if( (len > 1) && *(p-1)=='\r' && *p=='\n' )
Hello1024 0:1619a6b826d7 174 {
Hello1024 0:1619a6b826d7 175 p--;
Hello1024 0:1619a6b826d7 176 len-=2;
Hello1024 0:1619a6b826d7 177 break;
Hello1024 0:1619a6b826d7 178 }
Hello1024 0:1619a6b826d7 179 else if( *p=='\n' )
Hello1024 0:1619a6b826d7 180 {
Hello1024 0:1619a6b826d7 181 len--;
Hello1024 0:1619a6b826d7 182 break;
Hello1024 0:1619a6b826d7 183 }
Hello1024 0:1619a6b826d7 184 p++;
Hello1024 0:1619a6b826d7 185 len++;
Hello1024 0:1619a6b826d7 186 }
Hello1024 0:1619a6b826d7 187 *p = 0;
Hello1024 0:1619a6b826d7 188
Hello1024 0:1619a6b826d7 189 DBG("Parsing request : %s\r\n", req);
Hello1024 0:1619a6b826d7 190
Hello1024 0:1619a6b826d7 191 ret = sscanf(req, "%s %s HTTP/%*d.%*d", c_meth, c_path);
Hello1024 0:1619a6b826d7 192 if(ret !=2)
Hello1024 0:1619a6b826d7 193 return false;
Hello1024 0:1619a6b826d7 194
Hello1024 0:1619a6b826d7 195 *meth = string(c_meth);
Hello1024 0:1619a6b826d7 196 // NEW CODE (old code removed):
Hello1024 0:1619a6b826d7 197 *path = string(c_path);
Hello1024 0:1619a6b826d7 198 return true;
Hello1024 0:1619a6b826d7 199 }
Hello1024 0:1619a6b826d7 200
Hello1024 0:1619a6b826d7 201
Hello1024 0:1619a6b826d7 202
Hello1024 0:1619a6b826d7 203 void HTTPRequestDispatcher::onTCPSocketEvent(TCPSocketEvent e)
Hello1024 0:1619a6b826d7 204 {
Hello1024 0:1619a6b826d7 205
Hello1024 0:1619a6b826d7 206 DBG("\r\nEvent %d\r\n", e);
Hello1024 0:1619a6b826d7 207
Hello1024 0:1619a6b826d7 208 if(m_closed)
Hello1024 0:1619a6b826d7 209 {
Hello1024 0:1619a6b826d7 210 DBG("\r\nWARN: Discarded\r\n");
Hello1024 0:1619a6b826d7 211 return;
Hello1024 0:1619a6b826d7 212 }
Hello1024 0:1619a6b826d7 213
Hello1024 0:1619a6b826d7 214 switch(e)
Hello1024 0:1619a6b826d7 215 {
Hello1024 0:1619a6b826d7 216 case TCPSOCKET_READABLE:
Hello1024 0:1619a6b826d7 217 m_watchdog.detach();
Hello1024 0:1619a6b826d7 218 m_pTCPSocket->resetOnEvent();
Hello1024 0:1619a6b826d7 219 //Req arrived, dispatch :
Hello1024 0:1619a6b826d7 220 dispatchRequest();
Hello1024 0:1619a6b826d7 221 break;
Hello1024 0:1619a6b826d7 222 case TCPSOCKET_CONTIMEOUT:
Hello1024 0:1619a6b826d7 223 case TCPSOCKET_CONRST:
Hello1024 0:1619a6b826d7 224 case TCPSOCKET_CONABRT:
Hello1024 0:1619a6b826d7 225 case TCPSOCKET_ERROR:
Hello1024 0:1619a6b826d7 226 case TCPSOCKET_DISCONNECTED:
Hello1024 0:1619a6b826d7 227 close();
Hello1024 0:1619a6b826d7 228 break;
Hello1024 0:1619a6b826d7 229 }
Hello1024 0:1619a6b826d7 230
Hello1024 0:1619a6b826d7 231 }