Richard Blimmel / Mbed 2 deprecated CIG_HTTPClient

HTTPClient using static IP

Dependencies:   mbed

NetServices/services/http/server/HTTPRequestDispatcher.cpp@0:d8f2f7d5f31b, 2011-05-30 (annotated)

Committer:
mr_q
Date:
Mon May 30 11:53:37 2011 +0000
Revision:
0:d8f2f7d5f31b
v0.01 Draft

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mr_q 0:d8f2f7d5f31b 1
mr_q 0:d8f2f7d5f31b 2 /*
mr_q 0:d8f2f7d5f31b 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
mr_q 0:d8f2f7d5f31b 4
mr_q 0:d8f2f7d5f31b 5 Permission is hereby granted, free of charge, to any person obtaining a copy
mr_q 0:d8f2f7d5f31b 6 of this software and associated documentation files (the "Software"), to deal
mr_q 0:d8f2f7d5f31b 7 in the Software without restriction, including without limitation the rights
mr_q 0:d8f2f7d5f31b 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
mr_q 0:d8f2f7d5f31b 9 copies of the Software, and to permit persons to whom the Software is
mr_q 0:d8f2f7d5f31b 10 furnished to do so, subject to the following conditions:
mr_q 0:d8f2f7d5f31b 11
mr_q 0:d8f2f7d5f31b 12 The above copyright notice and this permission notice shall be included in
mr_q 0:d8f2f7d5f31b 13 all copies or substantial portions of the Software.
mr_q 0:d8f2f7d5f31b 14
mr_q 0:d8f2f7d5f31b 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
mr_q 0:d8f2f7d5f31b 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
mr_q 0:d8f2f7d5f31b 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
mr_q 0:d8f2f7d5f31b 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
mr_q 0:d8f2f7d5f31b 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
mr_q 0:d8f2f7d5f31b 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
mr_q 0:d8f2f7d5f31b 21 THE SOFTWARE.
mr_q 0:d8f2f7d5f31b 22 */
mr_q 0:d8f2f7d5f31b 23
mr_q 0:d8f2f7d5f31b 24 #include "core/netservice.h"
mr_q 0:d8f2f7d5f31b 25 #include "HTTPRequestDispatcher.h"
mr_q 0:d8f2f7d5f31b 26 #include "HTTPRequestHandler.h"
mr_q 0:d8f2f7d5f31b 27 #include <string.h>
mr_q 0:d8f2f7d5f31b 28
mr_q 0:d8f2f7d5f31b 29 //#define __DEBUG
mr_q 0:d8f2f7d5f31b 30 #include "dbg/dbg.h"
mr_q 0:d8f2f7d5f31b 31
mr_q 0:d8f2f7d5f31b 32 HTTPRequestDispatcher::HTTPRequestDispatcher(HTTPServer* pSvr, TCPSocket* pTCPSocket) : NetService(), m_pSvr(pSvr), m_pTCPSocket(pTCPSocket), m_watchdog(), m_closed(false)
mr_q 0:d8f2f7d5f31b 33 {
mr_q 0:d8f2f7d5f31b 34 m_pTCPSocket->setOnEvent(this, &HTTPRequestDispatcher::onTCPSocketEvent);
mr_q 0:d8f2f7d5f31b 35 m_watchdog.attach_us<HTTPRequestDispatcher>(this, &HTTPRequestDispatcher::onTimeout, HTTP_REQUEST_TIMEOUT * 1000);
mr_q 0:d8f2f7d5f31b 36 }
mr_q 0:d8f2f7d5f31b 37
mr_q 0:d8f2f7d5f31b 38 HTTPRequestDispatcher::~HTTPRequestDispatcher()
mr_q 0:d8f2f7d5f31b 39 {
mr_q 0:d8f2f7d5f31b 40 close();
mr_q 0:d8f2f7d5f31b 41 }
mr_q 0:d8f2f7d5f31b 42
mr_q 0:d8f2f7d5f31b 43 void HTTPRequestDispatcher::dispatchRequest()
mr_q 0:d8f2f7d5f31b 44 {
mr_q 0:d8f2f7d5f31b 45 string path;
mr_q 0:d8f2f7d5f31b 46 string meth;
mr_q 0:d8f2f7d5f31b 47 HTTP_METH methCode;
mr_q 0:d8f2f7d5f31b 48
mr_q 0:d8f2f7d5f31b 49 DBG("Dispatching req\r\n");
mr_q 0:d8f2f7d5f31b 50
mr_q 0:d8f2f7d5f31b 51 if( !getRequest(&path, &meth ) )
mr_q 0:d8f2f7d5f31b 52 {
mr_q 0:d8f2f7d5f31b 53 close();
mr_q 0:d8f2f7d5f31b 54 return; //Invalid request
mr_q 0:d8f2f7d5f31b 55 }
mr_q 0:d8f2f7d5f31b 56
mr_q 0:d8f2f7d5f31b 57 if( !meth.compare("GET") )
mr_q 0:d8f2f7d5f31b 58 {
mr_q 0:d8f2f7d5f31b 59 methCode = HTTP_GET;
mr_q 0:d8f2f7d5f31b 60 }
mr_q 0:d8f2f7d5f31b 61 else if( !meth.compare("POST") )
mr_q 0:d8f2f7d5f31b 62 {
mr_q 0:d8f2f7d5f31b 63 methCode = HTTP_POST;
mr_q 0:d8f2f7d5f31b 64 }
mr_q 0:d8f2f7d5f31b 65 else if( !meth.compare("HEAD") )
mr_q 0:d8f2f7d5f31b 66 {
mr_q 0:d8f2f7d5f31b 67 methCode = HTTP_HEAD;
mr_q 0:d8f2f7d5f31b 68 }
mr_q 0:d8f2f7d5f31b 69 else
mr_q 0:d8f2f7d5f31b 70 {
mr_q 0:d8f2f7d5f31b 71 close(); //Parse error
mr_q 0:d8f2f7d5f31b 72 return;
mr_q 0:d8f2f7d5f31b 73 }
mr_q 0:d8f2f7d5f31b 74
mr_q 0:d8f2f7d5f31b 75 DBG("Looking for a handler\r\n");
mr_q 0:d8f2f7d5f31b 76
mr_q 0:d8f2f7d5f31b 77 map< string, HTTPRequestHandler*(*)(const char*, const char*, TCPSocket*) >::iterator it;
mr_q 0:d8f2f7d5f31b 78 // it = m_pSvr->m_lpHandlers.find(rootPath); //We are friends so we can do that
mr_q 0:d8f2f7d5f31b 79 // NEW CODE START:
mr_q 0:d8f2f7d5f31b 80 int root_len = 0;
mr_q 0:d8f2f7d5f31b 81 for (it = m_pSvr->m_lpHandlers.begin(); it != m_pSvr->m_lpHandlers.end(); it++)
mr_q 0:d8f2f7d5f31b 82 {
mr_q 0:d8f2f7d5f31b 83 DBG("Checking %s...\n", (*it).first.c_str());
mr_q 0:d8f2f7d5f31b 84 root_len = (*it).first.length();
mr_q 0:d8f2f7d5f31b 85 if ( root_len &&
mr_q 0:d8f2f7d5f31b 86 !path.compare( 0, root_len, (*it).first ) &&
mr_q 0:d8f2f7d5f31b 87 (path[root_len] == '/' || path[root_len] == '\0'))
mr_q 0:d8f2f7d5f31b 88 {
mr_q 0:d8f2f7d5f31b 89 DBG("Found (%s)\n", (*it).first.c_str());
mr_q 0:d8f2f7d5f31b 90 // Found!
mr_q 0:d8f2f7d5f31b 91 break; // for
mr_q 0:d8f2f7d5f31b 92 }
mr_q 0:d8f2f7d5f31b 93 }
mr_q 0:d8f2f7d5f31b 94 // NEW CODE END
mr_q 0:d8f2f7d5f31b 95 if((it == m_pSvr->m_lpHandlers.end()) && !(m_pSvr->m_lpHandlers.empty()))
mr_q 0:d8f2f7d5f31b 96 {
mr_q 0:d8f2f7d5f31b 97 DBG("Using default handler\n");
mr_q 0:d8f2f7d5f31b 98 it = m_pSvr->m_lpHandlers.end();
mr_q 0:d8f2f7d5f31b 99 it--; //Get the last element
mr_q 0:d8f2f7d5f31b 100 if( ! (((*it).first.length() == 0) || !(*it).first.compare("/")) ) //This is not the default handler
mr_q 0:d8f2f7d5f31b 101 it = m_pSvr->m_lpHandlers.end();
mr_q 0:d8f2f7d5f31b 102 root_len = 0;
mr_q 0:d8f2f7d5f31b 103 }
mr_q 0:d8f2f7d5f31b 104 if(it == m_pSvr->m_lpHandlers.end())
mr_q 0:d8f2f7d5f31b 105 {
mr_q 0:d8f2f7d5f31b 106 DBG("No handler found\n");
mr_q 0:d8f2f7d5f31b 107 close(); //No handler found
mr_q 0:d8f2f7d5f31b 108 return;
mr_q 0:d8f2f7d5f31b 109 }
mr_q 0:d8f2f7d5f31b 110
mr_q 0:d8f2f7d5f31b 111 DBG("Handler found.\r\n");
mr_q 0:d8f2f7d5f31b 112
mr_q 0:d8f2f7d5f31b 113 //HTTPRequestHandler* pHdlr = (*it).second(rootPath.c_str(), subPath.c_str(), m_pTCPSocket);
mr_q 0:d8f2f7d5f31b 114 //NEW CODE 1 LINE:
mr_q 0:d8f2f7d5f31b 115 HTTPRequestHandler* pHdlr = (*it).second((*it).first.c_str(), path.c_str() + root_len, m_pTCPSocket);
mr_q 0:d8f2f7d5f31b 116 m_pTCPSocket = NULL; //We don't own it anymore
mr_q 0:d8f2f7d5f31b 117
mr_q 0:d8f2f7d5f31b 118 switch(methCode)
mr_q 0:d8f2f7d5f31b 119 {
mr_q 0:d8f2f7d5f31b 120 case HTTP_GET:
mr_q 0:d8f2f7d5f31b 121 pHdlr->doGet();
mr_q 0:d8f2f7d5f31b 122 break;
mr_q 0:d8f2f7d5f31b 123 case HTTP_POST:
mr_q 0:d8f2f7d5f31b 124 pHdlr->doPost();
mr_q 0:d8f2f7d5f31b 125 break;
mr_q 0:d8f2f7d5f31b 126 case HTTP_HEAD:
mr_q 0:d8f2f7d5f31b 127 pHdlr->doHead();
mr_q 0:d8f2f7d5f31b 128 break;
mr_q 0:d8f2f7d5f31b 129 }
mr_q 0:d8f2f7d5f31b 130
mr_q 0:d8f2f7d5f31b 131 DBG("Req handled (or being handled)\r\n");
mr_q 0:d8f2f7d5f31b 132 close();
mr_q 0:d8f2f7d5f31b 133 }
mr_q 0:d8f2f7d5f31b 134
mr_q 0:d8f2f7d5f31b 135 void HTTPRequestDispatcher::close() //Close socket and destroy data
mr_q 0:d8f2f7d5f31b 136 {
mr_q 0:d8f2f7d5f31b 137 if(m_closed)
mr_q 0:d8f2f7d5f31b 138 return;
mr_q 0:d8f2f7d5f31b 139 m_closed = true; //Prevent recursive calling or calling on an object being destructed by someone else
mr_q 0:d8f2f7d5f31b 140 m_watchdog.detach();
mr_q 0:d8f2f7d5f31b 141 if(m_pTCPSocket) //m_pTCPSocket Should only be destroyed if ownership not passed to an handler
mr_q 0:d8f2f7d5f31b 142 {
mr_q 0:d8f2f7d5f31b 143 m_pTCPSocket->resetOnEvent();
mr_q 0:d8f2f7d5f31b 144 m_pTCPSocket->close();
mr_q 0:d8f2f7d5f31b 145 delete m_pTCPSocket; //This fn might have been called by this socket (through an event), so DO NOT DESTROY IT HERE
mr_q 0:d8f2f7d5f31b 146 }
mr_q 0:d8f2f7d5f31b 147 NetService::close();
mr_q 0:d8f2f7d5f31b 148 }
mr_q 0:d8f2f7d5f31b 149
mr_q 0:d8f2f7d5f31b 150
mr_q 0:d8f2f7d5f31b 151 void HTTPRequestDispatcher::onTimeout() //Connection has timed out
mr_q 0:d8f2f7d5f31b 152 {
mr_q 0:d8f2f7d5f31b 153 close();
mr_q 0:d8f2f7d5f31b 154 }
mr_q 0:d8f2f7d5f31b 155
mr_q 0:d8f2f7d5f31b 156 bool HTTPRequestDispatcher::getRequest(string* path, string* meth)
mr_q 0:d8f2f7d5f31b 157 {
mr_q 0:d8f2f7d5f31b 158 char req[128];
mr_q 0:d8f2f7d5f31b 159 char c_path[128];
mr_q 0:d8f2f7d5f31b 160 char c_meth[128];
mr_q 0:d8f2f7d5f31b 161 const int maxLen = 128;
mr_q 0:d8f2f7d5f31b 162 char* p = req;
mr_q 0:d8f2f7d5f31b 163 //Read Line
mr_q 0:d8f2f7d5f31b 164 int ret;
mr_q 0:d8f2f7d5f31b 165 int len = 0;
mr_q 0:d8f2f7d5f31b 166 for(int i = 0; i < maxLen - 1; i++)
mr_q 0:d8f2f7d5f31b 167 {
mr_q 0:d8f2f7d5f31b 168 ret = m_pTCPSocket->recv(p, 1);
mr_q 0:d8f2f7d5f31b 169 if(!ret)
mr_q 0:d8f2f7d5f31b 170 {
mr_q 0:d8f2f7d5f31b 171 break;
mr_q 0:d8f2f7d5f31b 172 }
mr_q 0:d8f2f7d5f31b 173 if( (len > 1) && *(p-1)=='\r' && *p=='\n' )
mr_q 0:d8f2f7d5f31b 174 {
mr_q 0:d8f2f7d5f31b 175 p--;
mr_q 0:d8f2f7d5f31b 176 len-=2;
mr_q 0:d8f2f7d5f31b 177 break;
mr_q 0:d8f2f7d5f31b 178 }
mr_q 0:d8f2f7d5f31b 179 else if( *p=='\n' )
mr_q 0:d8f2f7d5f31b 180 {
mr_q 0:d8f2f7d5f31b 181 len--;
mr_q 0:d8f2f7d5f31b 182 break;
mr_q 0:d8f2f7d5f31b 183 }
mr_q 0:d8f2f7d5f31b 184 p++;
mr_q 0:d8f2f7d5f31b 185 len++;
mr_q 0:d8f2f7d5f31b 186 }
mr_q 0:d8f2f7d5f31b 187 *p = 0;
mr_q 0:d8f2f7d5f31b 188
mr_q 0:d8f2f7d5f31b 189 DBG("Parsing request : %s\r\n", req);
mr_q 0:d8f2f7d5f31b 190
mr_q 0:d8f2f7d5f31b 191 ret = sscanf(req, "%s %s HTTP/%*d.%*d", c_meth, c_path);
mr_q 0:d8f2f7d5f31b 192 if(ret !=2)
mr_q 0:d8f2f7d5f31b 193 return false;
mr_q 0:d8f2f7d5f31b 194
mr_q 0:d8f2f7d5f31b 195 *meth = string(c_meth);
mr_q 0:d8f2f7d5f31b 196 // NEW CODE (old code removed):
mr_q 0:d8f2f7d5f31b 197 *path = string(c_path);
mr_q 0:d8f2f7d5f31b 198 return true;
mr_q 0:d8f2f7d5f31b 199 }
mr_q 0:d8f2f7d5f31b 200
mr_q 0:d8f2f7d5f31b 201
mr_q 0:d8f2f7d5f31b 202
mr_q 0:d8f2f7d5f31b 203 void HTTPRequestDispatcher::onTCPSocketEvent(TCPSocketEvent e)
mr_q 0:d8f2f7d5f31b 204 {
mr_q 0:d8f2f7d5f31b 205
mr_q 0:d8f2f7d5f31b 206 DBG("\r\nEvent %d\r\n", e);
mr_q 0:d8f2f7d5f31b 207
mr_q 0:d8f2f7d5f31b 208 if(m_closed)
mr_q 0:d8f2f7d5f31b 209 {
mr_q 0:d8f2f7d5f31b 210 DBG("\r\nWARN: Discarded\r\n");
mr_q 0:d8f2f7d5f31b 211 return;
mr_q 0:d8f2f7d5f31b 212 }
mr_q 0:d8f2f7d5f31b 213
mr_q 0:d8f2f7d5f31b 214 switch(e)
mr_q 0:d8f2f7d5f31b 215 {
mr_q 0:d8f2f7d5f31b 216 case TCPSOCKET_READABLE:
mr_q 0:d8f2f7d5f31b 217 m_watchdog.detach();
mr_q 0:d8f2f7d5f31b 218 m_pTCPSocket->resetOnEvent();
mr_q 0:d8f2f7d5f31b 219 //Req arrived, dispatch :
mr_q 0:d8f2f7d5f31b 220 dispatchRequest();
mr_q 0:d8f2f7d5f31b 221 break;
mr_q 0:d8f2f7d5f31b 222 case TCPSOCKET_CONTIMEOUT:
mr_q 0:d8f2f7d5f31b 223 case TCPSOCKET_CONRST:
mr_q 0:d8f2f7d5f31b 224 case TCPSOCKET_CONABRT:
mr_q 0:d8f2f7d5f31b 225 case TCPSOCKET_ERROR:
mr_q 0:d8f2f7d5f31b 226 case TCPSOCKET_DISCONNECTED:
mr_q 0:d8f2f7d5f31b 227 close();
mr_q 0:d8f2f7d5f31b 228 break;
mr_q 0:d8f2f7d5f31b 229 }
mr_q 0:d8f2f7d5f31b 230
mr_q 0:d8f2f7d5f31b 231 }