Donatien Garnier
NetServices Stack source
Dependents: HelloWorld ServoInterfaceBoardExample1 4180_Lab4
services/http/server/HTTPRequestDispatcher.cpp@1:abb442332fa8, 2010-06-14 (annotated)
- Committer:
- donatien
- Date:
- Mon Jun 14 10:33:54 2010 +0000
- Revision:
- 1:abb442332fa8
- Parent:
- 0:632c9925f013
- Child:
- 2:a4f97773c90f
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| donatien | 0:632c9925f013 | 1 | |
| donatien | 0:632c9925f013 | 2 | /* |
| donatien | 0:632c9925f013 | 3 | Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com) |
| donatien | 0:632c9925f013 | 4 | |
| donatien | 0:632c9925f013 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy |
| donatien | 0:632c9925f013 | 6 | of this software and associated documentation files (the "Software"), to deal |
| donatien | 0:632c9925f013 | 7 | in the Software without restriction, including without limitation the rights |
| donatien | 0:632c9925f013 | 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| donatien | 0:632c9925f013 | 9 | copies of the Software, and to permit persons to whom the Software is |
| donatien | 0:632c9925f013 | 10 | furnished to do so, subject to the following conditions: |
| donatien | 0:632c9925f013 | 11 | |
| donatien | 0:632c9925f013 | 12 | The above copyright notice and this permission notice shall be included in |
| donatien | 0:632c9925f013 | 13 | all copies or substantial portions of the Software. |
| donatien | 0:632c9925f013 | 14 | |
| donatien | 0:632c9925f013 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| donatien | 0:632c9925f013 | 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| donatien | 0:632c9925f013 | 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| donatien | 0:632c9925f013 | 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| donatien | 0:632c9925f013 | 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| donatien | 0:632c9925f013 | 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| donatien | 0:632c9925f013 | 21 | THE SOFTWARE. |
| donatien | 0:632c9925f013 | 22 | */ |
| donatien | 0:632c9925f013 | 23 | |
| donatien | 0:632c9925f013 | 24 | #include "HTTPRequestDispatcher.h" |
| donatien | 0:632c9925f013 | 25 | #include "HTTPRequestHandler.h" |
| donatien | 0:632c9925f013 | 26 | #include <string.h> |
| donatien | 0:632c9925f013 | 27 | |
| donatien | 0:632c9925f013 | 28 | //#define __DEBUG |
| donatien | 0:632c9925f013 | 29 | #include "dbg/dbg.h" |
| donatien | 0:632c9925f013 | 30 | |
| donatien | 0:632c9925f013 | 31 | HTTPRequestDispatcher::HTTPRequestDispatcher(HTTPServer* pSvr, TCPSocket* pTCPSocket) : NetService(), m_pSvr(pSvr), m_pTCPSocket(pTCPSocket), m_watchdog(), m_closed(false) |
| donatien | 0:632c9925f013 | 32 | { |
| donatien | 0:632c9925f013 | 33 | m_pTCPSocket->setOnEvent(this, &HTTPRequestDispatcher::onTCPSocketEvent); |
| donatien | 0:632c9925f013 | 34 | m_watchdog.attach_us<HTTPRequestDispatcher>(this, &HTTPRequestDispatcher::onTimeout, HTTP_REQUEST_TIMEOUT * 1000); |
| donatien | 0:632c9925f013 | 35 | } |
| donatien | 0:632c9925f013 | 36 | |
| donatien | 0:632c9925f013 | 37 | HTTPRequestDispatcher::~HTTPRequestDispatcher() |
| donatien | 0:632c9925f013 | 38 | { |
| donatien | 0:632c9925f013 | 39 | close(); |
| donatien | 0:632c9925f013 | 40 | } |
| donatien | 0:632c9925f013 | 41 | |
| donatien | 0:632c9925f013 | 42 | void HTTPRequestDispatcher::dispatchRequest() |
| donatien | 0:632c9925f013 | 43 | { |
| donatien | 0:632c9925f013 | 44 | string rootPath; |
| donatien | 1:abb442332fa8 | 45 | string subPath; |
| donatien | 0:632c9925f013 | 46 | string meth; |
| donatien | 0:632c9925f013 | 47 | HTTP_METH methCode; |
| donatien | 0:632c9925f013 | 48 | |
| donatien | 0:632c9925f013 | 49 | DBG("\r\nDispatching req\r\n"); |
| donatien | 0:632c9925f013 | 50 | |
| donatien | 1:abb442332fa8 | 51 | if( !getRequest(&rootPath, &subPath, &meth ) ) |
| donatien | 0:632c9925f013 | 52 | { |
| donatien | 0:632c9925f013 | 53 | close(); |
| donatien | 0:632c9925f013 | 54 | return; //Invalid request |
| donatien | 0:632c9925f013 | 55 | } |
| donatien | 0:632c9925f013 | 56 | |
| donatien | 0:632c9925f013 | 57 | if( !meth.compare("GET") ) |
| donatien | 0:632c9925f013 | 58 | { |
| donatien | 0:632c9925f013 | 59 | methCode = HTTP_GET; |
| donatien | 0:632c9925f013 | 60 | } |
| donatien | 0:632c9925f013 | 61 | else if( !meth.compare("POST") ) |
| donatien | 0:632c9925f013 | 62 | { |
| donatien | 0:632c9925f013 | 63 | methCode = HTTP_POST; |
| donatien | 0:632c9925f013 | 64 | } |
| donatien | 0:632c9925f013 | 65 | else if( !meth.compare("HEAD") ) |
| donatien | 0:632c9925f013 | 66 | { |
| donatien | 0:632c9925f013 | 67 | methCode = HTTP_HEAD; |
| donatien | 0:632c9925f013 | 68 | } |
| donatien | 0:632c9925f013 | 69 | else |
| donatien | 0:632c9925f013 | 70 | { |
| donatien | 0:632c9925f013 | 71 | close(); //Parse error |
| donatien | 0:632c9925f013 | 72 | return; |
| donatien | 0:632c9925f013 | 73 | } |
| donatien | 0:632c9925f013 | 74 | |
| donatien | 0:632c9925f013 | 75 | DBG("\r\nLooking for a handler\r\n"); |
| donatien | 0:632c9925f013 | 76 | |
| donatien | 0:632c9925f013 | 77 | map< string, HTTPRequestHandler*(*)(const char*, const char*, TCPSocket*) >::iterator it; |
| donatien | 0:632c9925f013 | 78 | it = m_pSvr->m_lpHandlers.find(rootPath); //We are friends so we can do that |
| donatien | 0:632c9925f013 | 79 | if(it == m_pSvr->m_lpHandlers.end()) |
| donatien | 0:632c9925f013 | 80 | { |
| donatien | 0:632c9925f013 | 81 | it = m_pSvr->m_lpHandlers.find(""); //Use default handler if it exists |
| donatien | 0:632c9925f013 | 82 | } |
| donatien | 0:632c9925f013 | 83 | if(it == m_pSvr->m_lpHandlers.end()) |
| donatien | 0:632c9925f013 | 84 | { |
| donatien | 0:632c9925f013 | 85 | close(); //No handler found |
| donatien | 0:632c9925f013 | 86 | return; |
| donatien | 0:632c9925f013 | 87 | } |
| donatien | 0:632c9925f013 | 88 | |
| donatien | 0:632c9925f013 | 89 | DBG("\r\nHandler found.\r\n"); |
| donatien | 0:632c9925f013 | 90 | |
| donatien | 1:abb442332fa8 | 91 | HTTPRequestHandler* pHdlr = (*it).second(rootPath.c_str(), subPath.c_str(), m_pTCPSocket); |
| donatien | 0:632c9925f013 | 92 | m_pTCPSocket = NULL; //We don't own it anymore |
| donatien | 0:632c9925f013 | 93 | |
| donatien | 0:632c9925f013 | 94 | switch(methCode) |
| donatien | 0:632c9925f013 | 95 | { |
| donatien | 0:632c9925f013 | 96 | case HTTP_GET: |
| donatien | 0:632c9925f013 | 97 | pHdlr->doGet(); |
| donatien | 0:632c9925f013 | 98 | break; |
| donatien | 0:632c9925f013 | 99 | case HTTP_POST: |
| donatien | 0:632c9925f013 | 100 | pHdlr->doPost(); |
| donatien | 0:632c9925f013 | 101 | break; |
| donatien | 0:632c9925f013 | 102 | case HTTP_HEAD: |
| donatien | 0:632c9925f013 | 103 | pHdlr->doHead(); |
| donatien | 0:632c9925f013 | 104 | break; |
| donatien | 0:632c9925f013 | 105 | } |
| donatien | 0:632c9925f013 | 106 | |
| donatien | 0:632c9925f013 | 107 | DBG("\r\nReq handled (or being handled)\r\n"); |
| donatien | 0:632c9925f013 | 108 | close(); |
| donatien | 0:632c9925f013 | 109 | } |
| donatien | 0:632c9925f013 | 110 | |
| donatien | 0:632c9925f013 | 111 | void HTTPRequestDispatcher::close() //Close socket and destroy data |
| donatien | 0:632c9925f013 | 112 | { |
| donatien | 0:632c9925f013 | 113 | if(m_closed) |
| donatien | 0:632c9925f013 | 114 | return; |
| donatien | 0:632c9925f013 | 115 | m_closed = true; //Prevent recursive calling or calling on an object being destructed by someone else |
| donatien | 0:632c9925f013 | 116 | m_watchdog.detach(); |
| donatien | 0:632c9925f013 | 117 | if(m_pTCPSocket) //m_pTCPSocket Should only be destroyed if ownership not passed to an handler |
| donatien | 0:632c9925f013 | 118 | { |
| donatien | 0:632c9925f013 | 119 | m_pTCPSocket->resetOnEvent(); |
| donatien | 0:632c9925f013 | 120 | m_pTCPSocket->close(); |
| donatien | 0:632c9925f013 | 121 | delete m_pTCPSocket; //This fn might have been called by this socket (through an event), so DO NOT DESTROY IT HERE |
| donatien | 0:632c9925f013 | 122 | } |
| donatien | 0:632c9925f013 | 123 | NetService::close(); |
| donatien | 0:632c9925f013 | 124 | } |
| donatien | 0:632c9925f013 | 125 | |
| donatien | 0:632c9925f013 | 126 | |
| donatien | 0:632c9925f013 | 127 | void HTTPRequestDispatcher::onTimeout() //Connection has timed out |
| donatien | 0:632c9925f013 | 128 | { |
| donatien | 0:632c9925f013 | 129 | close(); |
| donatien | 0:632c9925f013 | 130 | } |
| donatien | 0:632c9925f013 | 131 | |
| donatien | 1:abb442332fa8 | 132 | bool HTTPRequestDispatcher::getRequest(string* rootPath, string* subPath, string* meth) |
| donatien | 0:632c9925f013 | 133 | { |
| donatien | 0:632c9925f013 | 134 | char req[128]; |
| donatien | 0:632c9925f013 | 135 | char c_path[128]; |
| donatien | 0:632c9925f013 | 136 | char c_meth[128]; |
| donatien | 0:632c9925f013 | 137 | const int maxLen = 128; |
| donatien | 0:632c9925f013 | 138 | char* p = req; |
| donatien | 0:632c9925f013 | 139 | //Read Line |
| donatien | 0:632c9925f013 | 140 | int ret; |
| donatien | 0:632c9925f013 | 141 | int len = 0; |
| donatien | 0:632c9925f013 | 142 | for(int i = 0; i < maxLen - 1; i++) |
| donatien | 0:632c9925f013 | 143 | { |
| donatien | 0:632c9925f013 | 144 | ret = m_pTCPSocket->recv(p, 1); |
| donatien | 0:632c9925f013 | 145 | if(!ret) |
| donatien | 0:632c9925f013 | 146 | { |
| donatien | 0:632c9925f013 | 147 | break; |
| donatien | 0:632c9925f013 | 148 | } |
| donatien | 0:632c9925f013 | 149 | if( (len > 1) && *(p-1)=='\r' && *p=='\n' ) |
| donatien | 0:632c9925f013 | 150 | { |
| donatien | 0:632c9925f013 | 151 | p--; |
| donatien | 0:632c9925f013 | 152 | len-=2; |
| donatien | 0:632c9925f013 | 153 | break; |
| donatien | 0:632c9925f013 | 154 | } |
| donatien | 0:632c9925f013 | 155 | else if( *p=='\n' ) |
| donatien | 0:632c9925f013 | 156 | { |
| donatien | 0:632c9925f013 | 157 | len--; |
| donatien | 0:632c9925f013 | 158 | break; |
| donatien | 0:632c9925f013 | 159 | } |
| donatien | 0:632c9925f013 | 160 | p++; |
| donatien | 0:632c9925f013 | 161 | len++; |
| donatien | 0:632c9925f013 | 162 | } |
| donatien | 0:632c9925f013 | 163 | *p = 0; |
| donatien | 0:632c9925f013 | 164 | |
| donatien | 0:632c9925f013 | 165 | DBG("\r\nParsing request : %s\r\n", req); |
| donatien | 0:632c9925f013 | 166 | |
| donatien | 0:632c9925f013 | 167 | ret = sscanf(req, "%s %s HTTP/%*d.%*d", c_meth, c_path); |
| donatien | 0:632c9925f013 | 168 | if(ret !=2) |
| donatien | 0:632c9925f013 | 169 | return false; |
| donatien | 0:632c9925f013 | 170 | |
| donatien | 0:632c9925f013 | 171 | *meth = string(c_meth); |
| donatien | 1:abb442332fa8 | 172 | *subPath = string(c_path); |
| donatien | 0:632c9925f013 | 173 | |
| donatien | 0:632c9925f013 | 174 | c_path[0]= '/'; |
| donatien | 1:abb442332fa8 | 175 | if(!strchr(c_path+1, '/')) |
| donatien | 1:abb442332fa8 | 176 | { |
| donatien | 1:abb442332fa8 | 177 | //Not found, so this is the root path |
| donatien | 1:abb442332fa8 | 178 | c_path[1]=0; |
| donatien | 1:abb442332fa8 | 179 | *rootPath = string(c_path); |
| donatien | 1:abb442332fa8 | 180 | } |
| donatien | 1:abb442332fa8 | 181 | else |
| donatien | 0:632c9925f013 | 182 | { |
| donatien | 1:abb442332fa8 | 183 | ret = sscanf(req, "%*s /%[^/ ]/%*s HTTP/%*d.%*d", c_path+1); |
| donatien | 1:abb442332fa8 | 184 | if(ret !=1) |
| donatien | 1:abb442332fa8 | 185 | { |
| donatien | 1:abb442332fa8 | 186 | //This is the root path |
| donatien | 1:abb442332fa8 | 187 | DBG("Default path\n"); |
| donatien | 1:abb442332fa8 | 188 | } |
| donatien | 1:abb442332fa8 | 189 | *rootPath = string(c_path); |
| donatien | 1:abb442332fa8 | 190 | subPath->erase(0,rootPath->length()); |
| donatien | 0:632c9925f013 | 191 | } |
| donatien | 1:abb442332fa8 | 192 | |
| donatien | 0:632c9925f013 | 193 | |
| donatien | 1:abb442332fa8 | 194 | DBG("\r\nParse OK :\r\nRoot Path: %s\r\nSub Path: %s\r\nMethod: %s\r\n", rootPath->c_str(), subPath->c_str(), meth->c_str()); |
| donatien | 0:632c9925f013 | 195 | |
| donatien | 0:632c9925f013 | 196 | return true; |
| donatien | 0:632c9925f013 | 197 | |
| donatien | 0:632c9925f013 | 198 | } |
| donatien | 0:632c9925f013 | 199 | |
| donatien | 0:632c9925f013 | 200 | |
| donatien | 0:632c9925f013 | 201 | void HTTPRequestDispatcher::onTCPSocketEvent(TCPSocketEvent e) |
| donatien | 0:632c9925f013 | 202 | { |
| donatien | 0:632c9925f013 | 203 | |
| donatien | 0:632c9925f013 | 204 | DBG("\r\nEvent %d\r\n", e); |
| donatien | 0:632c9925f013 | 205 | |
| donatien | 0:632c9925f013 | 206 | if(m_closed) |
| donatien | 0:632c9925f013 | 207 | { |
| donatien | 0:632c9925f013 | 208 | DBG("\r\nWARN: Discarded\r\n"); |
| donatien | 0:632c9925f013 | 209 | return; |
| donatien | 0:632c9925f013 | 210 | } |
| donatien | 0:632c9925f013 | 211 | |
| donatien | 0:632c9925f013 | 212 | switch(e) |
| donatien | 0:632c9925f013 | 213 | { |
| donatien | 0:632c9925f013 | 214 | case TCPSOCKET_READABLE: |
| donatien | 0:632c9925f013 | 215 | m_watchdog.detach(); |
| donatien | 0:632c9925f013 | 216 | m_pTCPSocket->resetOnEvent(); |
| donatien | 0:632c9925f013 | 217 | //Req arrived, dispatch : |
| donatien | 0:632c9925f013 | 218 | dispatchRequest(); |
| donatien | 0:632c9925f013 | 219 | break; |
| donatien | 0:632c9925f013 | 220 | case TCPSOCKET_CONTIMEOUT: |
| donatien | 0:632c9925f013 | 221 | case TCPSOCKET_CONRST: |
| donatien | 0:632c9925f013 | 222 | case TCPSOCKET_CONABRT: |
| donatien | 0:632c9925f013 | 223 | case TCPSOCKET_ERROR: |
| donatien | 0:632c9925f013 | 224 | case TCPSOCKET_DISCONNECTED: |
| donatien | 0:632c9925f013 | 225 | close(); |
| donatien | 0:632c9925f013 | 226 | break; |
| donatien | 0:632c9925f013 | 227 | } |
| donatien | 0:632c9925f013 | 228 | |
| donatien | 0:632c9925f013 | 229 | } |