Lorcan Smith / Mbed 2 deprecated Enet_SPI

SNMP agent attached to SPI slave

Dependencies:   mbed

services/http/server/HTTPRequestDispatcher.cpp@0:2a53a4c3238c, 2012-08-13 (annotated)

Committer:
lorcansmith
Date:
Mon Aug 13 15:07:40 2012 +0000
Revision:
0:2a53a4c3238c
v1.1 release includes ioAlarm traps

Who changed what in which revision?

UserRevisionLine numberNew contents of line
lorcansmith 0:2a53a4c3238c 1
lorcansmith 0:2a53a4c3238c 2 /*
lorcansmith 0:2a53a4c3238c 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
lorcansmith 0:2a53a4c3238c 4
lorcansmith 0:2a53a4c3238c 5 Permission is hereby granted, free of charge, to any person obtaining a copy
lorcansmith 0:2a53a4c3238c 6 of this software and associated documentation files (the "Software"), to deal
lorcansmith 0:2a53a4c3238c 7 in the Software without restriction, including without limitation the rights
lorcansmith 0:2a53a4c3238c 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
lorcansmith 0:2a53a4c3238c 9 copies of the Software, and to permit persons to whom the Software is
lorcansmith 0:2a53a4c3238c 10 furnished to do so, subject to the following conditions:
lorcansmith 0:2a53a4c3238c 11
lorcansmith 0:2a53a4c3238c 12 The above copyright notice and this permission notice shall be included in
lorcansmith 0:2a53a4c3238c 13 all copies or substantial portions of the Software.
lorcansmith 0:2a53a4c3238c 14
lorcansmith 0:2a53a4c3238c 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
lorcansmith 0:2a53a4c3238c 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
lorcansmith 0:2a53a4c3238c 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
lorcansmith 0:2a53a4c3238c 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
lorcansmith 0:2a53a4c3238c 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
lorcansmith 0:2a53a4c3238c 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
lorcansmith 0:2a53a4c3238c 21 THE SOFTWARE.
lorcansmith 0:2a53a4c3238c 22 */
lorcansmith 0:2a53a4c3238c 23
lorcansmith 0:2a53a4c3238c 24 #include "core/netservice.h"
lorcansmith 0:2a53a4c3238c 25 #include "HTTPRequestDispatcher.h"
lorcansmith 0:2a53a4c3238c 26 #include "HTTPRequestHandler.h"
lorcansmith 0:2a53a4c3238c 27 #include <string.h>
lorcansmith 0:2a53a4c3238c 28
lorcansmith 0:2a53a4c3238c 29 //#define __DEBUG
lorcansmith 0:2a53a4c3238c 30 #include "dbg/dbg.h"
lorcansmith 0:2a53a4c3238c 31
lorcansmith 0:2a53a4c3238c 32 HTTPRequestDispatcher::HTTPRequestDispatcher(HTTPServer* pSvr, TCPSocket* pTCPSocket) : NetService(), m_pSvr(pSvr), m_pTCPSocket(pTCPSocket), m_watchdog(), m_closed(false)
lorcansmith 0:2a53a4c3238c 33 {
lorcansmith 0:2a53a4c3238c 34 m_pTCPSocket->setOnEvent(this, &HTTPRequestDispatcher::onTCPSocketEvent);
lorcansmith 0:2a53a4c3238c 35 m_watchdog.attach_us<HTTPRequestDispatcher>(this, &HTTPRequestDispatcher::onTimeout, HTTP_REQUEST_TIMEOUT * 1000);
lorcansmith 0:2a53a4c3238c 36 }
lorcansmith 0:2a53a4c3238c 37
lorcansmith 0:2a53a4c3238c 38 HTTPRequestDispatcher::~HTTPRequestDispatcher()
lorcansmith 0:2a53a4c3238c 39 {
lorcansmith 0:2a53a4c3238c 40 close();
lorcansmith 0:2a53a4c3238c 41 }
lorcansmith 0:2a53a4c3238c 42
lorcansmith 0:2a53a4c3238c 43 void HTTPRequestDispatcher::dispatchRequest()
lorcansmith 0:2a53a4c3238c 44 {
lorcansmith 0:2a53a4c3238c 45 string path;
lorcansmith 0:2a53a4c3238c 46 string meth;
lorcansmith 0:2a53a4c3238c 47 HTTP_METH methCode;
lorcansmith 0:2a53a4c3238c 48
lorcansmith 0:2a53a4c3238c 49 DBG("Dispatching req\r\n");
lorcansmith 0:2a53a4c3238c 50
lorcansmith 0:2a53a4c3238c 51 if( !getRequest(&path, &meth ) )
lorcansmith 0:2a53a4c3238c 52 {
lorcansmith 0:2a53a4c3238c 53 close();
lorcansmith 0:2a53a4c3238c 54 return; //Invalid request
lorcansmith 0:2a53a4c3238c 55 }
lorcansmith 0:2a53a4c3238c 56
lorcansmith 0:2a53a4c3238c 57 if( !meth.compare("GET") )
lorcansmith 0:2a53a4c3238c 58 {
lorcansmith 0:2a53a4c3238c 59 methCode = HTTP_GET;
lorcansmith 0:2a53a4c3238c 60 }
lorcansmith 0:2a53a4c3238c 61 else if( !meth.compare("POST") )
lorcansmith 0:2a53a4c3238c 62 {
lorcansmith 0:2a53a4c3238c 63 methCode = HTTP_POST;
lorcansmith 0:2a53a4c3238c 64 }
lorcansmith 0:2a53a4c3238c 65 else if( !meth.compare("HEAD") )
lorcansmith 0:2a53a4c3238c 66 {
lorcansmith 0:2a53a4c3238c 67 methCode = HTTP_HEAD;
lorcansmith 0:2a53a4c3238c 68 }
lorcansmith 0:2a53a4c3238c 69 else
lorcansmith 0:2a53a4c3238c 70 {
lorcansmith 0:2a53a4c3238c 71 close(); //Parse error
lorcansmith 0:2a53a4c3238c 72 return;
lorcansmith 0:2a53a4c3238c 73 }
lorcansmith 0:2a53a4c3238c 74
lorcansmith 0:2a53a4c3238c 75 DBG("Looking for a handler\r\n");
lorcansmith 0:2a53a4c3238c 76
lorcansmith 0:2a53a4c3238c 77 map< string, HTTPRequestHandler*(*)(const char*, const char*, TCPSocket*) >::iterator it;
lorcansmith 0:2a53a4c3238c 78 // it = m_pSvr->m_lpHandlers.find(rootPath); //We are friends so we can do that
lorcansmith 0:2a53a4c3238c 79 // NEW CODE START:
lorcansmith 0:2a53a4c3238c 80 int root_len = 0;
lorcansmith 0:2a53a4c3238c 81 for (it = m_pSvr->m_lpHandlers.begin(); it != m_pSvr->m_lpHandlers.end(); it++)
lorcansmith 0:2a53a4c3238c 82 {
lorcansmith 0:2a53a4c3238c 83 DBG("Checking %s...\n", (*it).first.c_str());
lorcansmith 0:2a53a4c3238c 84 root_len = (*it).first.length();
lorcansmith 0:2a53a4c3238c 85 if ( root_len &&
lorcansmith 0:2a53a4c3238c 86 !path.compare( 0, root_len, (*it).first ) &&
lorcansmith 0:2a53a4c3238c 87 (path[root_len] == '/' || path[root_len] == '\0'))
lorcansmith 0:2a53a4c3238c 88 {
lorcansmith 0:2a53a4c3238c 89 DBG("Found (%s)\n", (*it).first.c_str());
lorcansmith 0:2a53a4c3238c 90 // Found!
lorcansmith 0:2a53a4c3238c 91 break; // for
lorcansmith 0:2a53a4c3238c 92 }
lorcansmith 0:2a53a4c3238c 93 }
lorcansmith 0:2a53a4c3238c 94 // NEW CODE END
lorcansmith 0:2a53a4c3238c 95 if((it == m_pSvr->m_lpHandlers.end()) && !(m_pSvr->m_lpHandlers.empty()))
lorcansmith 0:2a53a4c3238c 96 {
lorcansmith 0:2a53a4c3238c 97 DBG("Using default handler\n");
lorcansmith 0:2a53a4c3238c 98 it = m_pSvr->m_lpHandlers.end();
lorcansmith 0:2a53a4c3238c 99 it--; //Get the last element
lorcansmith 0:2a53a4c3238c 100 if( ! (((*it).first.length() == 0) || !(*it).first.compare("/")) ) //This is not the default handler
lorcansmith 0:2a53a4c3238c 101 it = m_pSvr->m_lpHandlers.end();
lorcansmith 0:2a53a4c3238c 102 root_len = 0;
lorcansmith 0:2a53a4c3238c 103 }
lorcansmith 0:2a53a4c3238c 104 if(it == m_pSvr->m_lpHandlers.end())
lorcansmith 0:2a53a4c3238c 105 {
lorcansmith 0:2a53a4c3238c 106 DBG("No handler found\n");
lorcansmith 0:2a53a4c3238c 107 close(); //No handler found
lorcansmith 0:2a53a4c3238c 108 return;
lorcansmith 0:2a53a4c3238c 109 }
lorcansmith 0:2a53a4c3238c 110
lorcansmith 0:2a53a4c3238c 111 DBG("Handler found.\r\n");
lorcansmith 0:2a53a4c3238c 112
lorcansmith 0:2a53a4c3238c 113 //HTTPRequestHandler* pHdlr = (*it).second(rootPath.c_str(), subPath.c_str(), m_pTCPSocket);
lorcansmith 0:2a53a4c3238c 114 //NEW CODE 1 LINE:
lorcansmith 0:2a53a4c3238c 115 HTTPRequestHandler* pHdlr = (*it).second((*it).first.c_str(), path.c_str() + root_len, m_pTCPSocket);
lorcansmith 0:2a53a4c3238c 116 m_pTCPSocket = NULL; //We don't own it anymore
lorcansmith 0:2a53a4c3238c 117
lorcansmith 0:2a53a4c3238c 118 switch(methCode)
lorcansmith 0:2a53a4c3238c 119 {
lorcansmith 0:2a53a4c3238c 120 case HTTP_GET:
lorcansmith 0:2a53a4c3238c 121 pHdlr->doGet();
lorcansmith 0:2a53a4c3238c 122 break;
lorcansmith 0:2a53a4c3238c 123 case HTTP_POST:
lorcansmith 0:2a53a4c3238c 124 pHdlr->doPost();
lorcansmith 0:2a53a4c3238c 125 break;
lorcansmith 0:2a53a4c3238c 126 case HTTP_HEAD:
lorcansmith 0:2a53a4c3238c 127 pHdlr->doHead();
lorcansmith 0:2a53a4c3238c 128 break;
lorcansmith 0:2a53a4c3238c 129 }
lorcansmith 0:2a53a4c3238c 130
lorcansmith 0:2a53a4c3238c 131 DBG("Req handled (or being handled)\r\n");
lorcansmith 0:2a53a4c3238c 132 close();
lorcansmith 0:2a53a4c3238c 133 }
lorcansmith 0:2a53a4c3238c 134
lorcansmith 0:2a53a4c3238c 135 void HTTPRequestDispatcher::close() //Close socket and destroy data
lorcansmith 0:2a53a4c3238c 136 {
lorcansmith 0:2a53a4c3238c 137 if(m_closed)
lorcansmith 0:2a53a4c3238c 138 return;
lorcansmith 0:2a53a4c3238c 139 m_closed = true; //Prevent recursive calling or calling on an object being destructed by someone else
lorcansmith 0:2a53a4c3238c 140 m_watchdog.detach();
lorcansmith 0:2a53a4c3238c 141 if(m_pTCPSocket) //m_pTCPSocket Should only be destroyed if ownership not passed to an handler
lorcansmith 0:2a53a4c3238c 142 {
lorcansmith 0:2a53a4c3238c 143 m_pTCPSocket->resetOnEvent();
lorcansmith 0:2a53a4c3238c 144 m_pTCPSocket->close();
lorcansmith 0:2a53a4c3238c 145 delete m_pTCPSocket; //This fn might have been called by this socket (through an event), so DO NOT DESTROY IT HERE
lorcansmith 0:2a53a4c3238c 146 }
lorcansmith 0:2a53a4c3238c 147 NetService::close();
lorcansmith 0:2a53a4c3238c 148 }
lorcansmith 0:2a53a4c3238c 149
lorcansmith 0:2a53a4c3238c 150
lorcansmith 0:2a53a4c3238c 151 void HTTPRequestDispatcher::onTimeout() //Connection has timed out
lorcansmith 0:2a53a4c3238c 152 {
lorcansmith 0:2a53a4c3238c 153 close();
lorcansmith 0:2a53a4c3238c 154 }
lorcansmith 0:2a53a4c3238c 155
lorcansmith 0:2a53a4c3238c 156 bool HTTPRequestDispatcher::getRequest(string* path, string* meth)
lorcansmith 0:2a53a4c3238c 157 {
lorcansmith 0:2a53a4c3238c 158 char req[128];
lorcansmith 0:2a53a4c3238c 159 char c_path[128];
lorcansmith 0:2a53a4c3238c 160 char c_meth[128];
lorcansmith 0:2a53a4c3238c 161 const int maxLen = 128;
lorcansmith 0:2a53a4c3238c 162 char* p = req;
lorcansmith 0:2a53a4c3238c 163 //Read Line
lorcansmith 0:2a53a4c3238c 164 int ret;
lorcansmith 0:2a53a4c3238c 165 int len = 0;
lorcansmith 0:2a53a4c3238c 166 for(int i = 0; i < maxLen - 1; i++)
lorcansmith 0:2a53a4c3238c 167 {
lorcansmith 0:2a53a4c3238c 168 ret = m_pTCPSocket->recv(p, 1);
lorcansmith 0:2a53a4c3238c 169 if(!ret)
lorcansmith 0:2a53a4c3238c 170 {
lorcansmith 0:2a53a4c3238c 171 break;
lorcansmith 0:2a53a4c3238c 172 }
lorcansmith 0:2a53a4c3238c 173 if( (len > 1) && *(p-1)=='\r' && *p=='\n' )
lorcansmith 0:2a53a4c3238c 174 {
lorcansmith 0:2a53a4c3238c 175 p--;
lorcansmith 0:2a53a4c3238c 176 len-=2;
lorcansmith 0:2a53a4c3238c 177 break;
lorcansmith 0:2a53a4c3238c 178 }
lorcansmith 0:2a53a4c3238c 179 else if( *p=='\n' )
lorcansmith 0:2a53a4c3238c 180 {
lorcansmith 0:2a53a4c3238c 181 len--;
lorcansmith 0:2a53a4c3238c 182 break;
lorcansmith 0:2a53a4c3238c 183 }
lorcansmith 0:2a53a4c3238c 184 p++;
lorcansmith 0:2a53a4c3238c 185 len++;
lorcansmith 0:2a53a4c3238c 186 }
lorcansmith 0:2a53a4c3238c 187 *p = 0;
lorcansmith 0:2a53a4c3238c 188
lorcansmith 0:2a53a4c3238c 189 DBG("Parsing request : %s\r\n", req);
lorcansmith 0:2a53a4c3238c 190
lorcansmith 0:2a53a4c3238c 191 ret = sscanf(req, "%s %s HTTP/%*d.%*d", c_meth, c_path);
lorcansmith 0:2a53a4c3238c 192 if(ret !=2)
lorcansmith 0:2a53a4c3238c 193 return false;
lorcansmith 0:2a53a4c3238c 194
lorcansmith 0:2a53a4c3238c 195 *meth = string(c_meth);
lorcansmith 0:2a53a4c3238c 196 // NEW CODE (old code removed):
lorcansmith 0:2a53a4c3238c 197 *path = string(c_path);
lorcansmith 0:2a53a4c3238c 198 return true;
lorcansmith 0:2a53a4c3238c 199 }
lorcansmith 0:2a53a4c3238c 200
lorcansmith 0:2a53a4c3238c 201
lorcansmith 0:2a53a4c3238c 202
lorcansmith 0:2a53a4c3238c 203 void HTTPRequestDispatcher::onTCPSocketEvent(TCPSocketEvent e)
lorcansmith 0:2a53a4c3238c 204 {
lorcansmith 0:2a53a4c3238c 205
lorcansmith 0:2a53a4c3238c 206 DBG("\r\nEvent %d\r\n", e);
lorcansmith 0:2a53a4c3238c 207
lorcansmith 0:2a53a4c3238c 208 if(m_closed)
lorcansmith 0:2a53a4c3238c 209 {
lorcansmith 0:2a53a4c3238c 210 DBG("\r\nWARN: Discarded\r\n");
lorcansmith 0:2a53a4c3238c 211 return;
lorcansmith 0:2a53a4c3238c 212 }
lorcansmith 0:2a53a4c3238c 213
lorcansmith 0:2a53a4c3238c 214 switch(e)
lorcansmith 0:2a53a4c3238c 215 {
lorcansmith 0:2a53a4c3238c 216 case TCPSOCKET_READABLE:
lorcansmith 0:2a53a4c3238c 217 m_watchdog.detach();
lorcansmith 0:2a53a4c3238c 218 m_pTCPSocket->resetOnEvent();
lorcansmith 0:2a53a4c3238c 219 //Req arrived, dispatch :
lorcansmith 0:2a53a4c3238c 220 dispatchRequest();
lorcansmith 0:2a53a4c3238c 221 break;
lorcansmith 0:2a53a4c3238c 222 case TCPSOCKET_CONTIMEOUT:
lorcansmith 0:2a53a4c3238c 223 case TCPSOCKET_CONRST:
lorcansmith 0:2a53a4c3238c 224 case TCPSOCKET_CONABRT:
lorcansmith 0:2a53a4c3238c 225 case TCPSOCKET_ERROR:
lorcansmith 0:2a53a4c3238c 226 case TCPSOCKET_DISCONNECTED:
lorcansmith 0:2a53a4c3238c 227 close();
lorcansmith 0:2a53a4c3238c 228 break;
lorcansmith 0:2a53a4c3238c 229 }
lorcansmith 0:2a53a4c3238c 230
lorcansmith 0:2a53a4c3238c 231 }