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/HTTPRequestHandler.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 "HTTPRequestHandler.h"
ICTFBI 0:4edb816d21e1 26
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 #define HTTP_REQUEST_TIMEOUT 5000
ICTFBI 0:4edb816d21e1 33
ICTFBI 0:4edb816d21e1 34 HTTPRequestHandler::HTTPRequestHandler(const char* rootPath, const char* path, TCPSocket* pTCPSocket) : NetService(),
ICTFBI 0:4edb816d21e1 35 m_pTCPSocket(pTCPSocket), m_reqHeaders(), m_respHeaders(),
ICTFBI 0:4edb816d21e1 36 m_rootPath(rootPath), m_path(path), m_errc(200),
ICTFBI 0:4edb816d21e1 37 m_watchdog(), m_timeout(0), m_closed(false), m_headersSent(false) //OK
ICTFBI 0:4edb816d21e1 38 {
ICTFBI 0:4edb816d21e1 39 //Read & parse headers
ICTFBI 0:4edb816d21e1 40 readHeaders();
ICTFBI 0:4edb816d21e1 41 m_pTCPSocket->setOnEvent(this, &HTTPRequestHandler::onTCPSocketEvent);
ICTFBI 0:4edb816d21e1 42 setTimeout(HTTP_REQUEST_TIMEOUT);
ICTFBI 0:4edb816d21e1 43 }
ICTFBI 0:4edb816d21e1 44
ICTFBI 0:4edb816d21e1 45 HTTPRequestHandler::~HTTPRequestHandler()
ICTFBI 0:4edb816d21e1 46 {
ICTFBI 0:4edb816d21e1 47 close();
ICTFBI 0:4edb816d21e1 48 }
ICTFBI 0:4edb816d21e1 49
ICTFBI 0:4edb816d21e1 50 void HTTPRequestHandler::onTimeout() //Connection has timed out
ICTFBI 0:4edb816d21e1 51 {
ICTFBI 0:4edb816d21e1 52 close();
ICTFBI 0:4edb816d21e1 53 }
ICTFBI 0:4edb816d21e1 54
ICTFBI 0:4edb816d21e1 55 void HTTPRequestHandler::close() //Close socket and destroy data
ICTFBI 0:4edb816d21e1 56 {
ICTFBI 0:4edb816d21e1 57 if(m_closed)
ICTFBI 0:4edb816d21e1 58 return;
ICTFBI 0:4edb816d21e1 59 m_closed = true; //Prevent recursive calling or calling on an object being destructed by someone else
ICTFBI 0:4edb816d21e1 60 m_watchdog.detach();
ICTFBI 0:4edb816d21e1 61 onClose();
ICTFBI 0:4edb816d21e1 62 m_pTCPSocket->resetOnEvent();
ICTFBI 0:4edb816d21e1 63 m_pTCPSocket->close();
ICTFBI 0:4edb816d21e1 64 delete m_pTCPSocket; //Can safely destroy socket
ICTFBI 0:4edb816d21e1 65 NetService::close();
ICTFBI 0:4edb816d21e1 66 }
ICTFBI 0:4edb816d21e1 67
ICTFBI 0:4edb816d21e1 68 map<string, string>& HTTPRequestHandler::reqHeaders() //const
ICTFBI 0:4edb816d21e1 69 {
ICTFBI 0:4edb816d21e1 70 return m_reqHeaders;
ICTFBI 0:4edb816d21e1 71 }
ICTFBI 0:4edb816d21e1 72
ICTFBI 0:4edb816d21e1 73 string& HTTPRequestHandler::path() //const
ICTFBI 0:4edb816d21e1 74 {
ICTFBI 0:4edb816d21e1 75 return m_path;
ICTFBI 0:4edb816d21e1 76 }
ICTFBI 0:4edb816d21e1 77
ICTFBI 0:4edb816d21e1 78 int HTTPRequestHandler::dataLen() const
ICTFBI 0:4edb816d21e1 79 {
ICTFBI 0:4edb816d21e1 80 map<string,string>::iterator it;
ICTFBI 0:4edb816d21e1 81 it = m_reqHeaders.find("Content-Length");
ICTFBI 0:4edb816d21e1 82 if( it == m_reqHeaders.end() )
ICTFBI 0:4edb816d21e1 83 {
ICTFBI 0:4edb816d21e1 84 return 0;
ICTFBI 0:4edb816d21e1 85 }
ICTFBI 0:4edb816d21e1 86 return atoi((*it).second.c_str()); //return 0 if parse fails, so that's fine
ICTFBI 0:4edb816d21e1 87 }
ICTFBI 0:4edb816d21e1 88
ICTFBI 0:4edb816d21e1 89 int HTTPRequestHandler::readData(char* buf, int len)
ICTFBI 0:4edb816d21e1 90 {
ICTFBI 0:4edb816d21e1 91 return m_pTCPSocket->recv(buf, len);
ICTFBI 0:4edb816d21e1 92 }
ICTFBI 0:4edb816d21e1 93
ICTFBI 0:4edb816d21e1 94 string& HTTPRequestHandler::rootPath() //const
ICTFBI 0:4edb816d21e1 95 {
ICTFBI 0:4edb816d21e1 96 return m_rootPath;
ICTFBI 0:4edb816d21e1 97 }
ICTFBI 0:4edb816d21e1 98
ICTFBI 0:4edb816d21e1 99 void HTTPRequestHandler::setErrCode(int errc)
ICTFBI 0:4edb816d21e1 100 {
ICTFBI 0:4edb816d21e1 101 m_errc = errc;
ICTFBI 0:4edb816d21e1 102 }
ICTFBI 0:4edb816d21e1 103
ICTFBI 0:4edb816d21e1 104 void HTTPRequestHandler::setContentLen(int len)
ICTFBI 0:4edb816d21e1 105 {
ICTFBI 0:4edb816d21e1 106 char len_str[6] = {0};
ICTFBI 0:4edb816d21e1 107 sprintf(len_str, "%d", len);
ICTFBI 0:4edb816d21e1 108 respHeaders()["Content-Length"] = len_str;
ICTFBI 0:4edb816d21e1 109 }
ICTFBI 0:4edb816d21e1 110
ICTFBI 0:4edb816d21e1 111 map<string, string>& HTTPRequestHandler::respHeaders()
ICTFBI 0:4edb816d21e1 112 {
ICTFBI 0:4edb816d21e1 113 return m_respHeaders;
ICTFBI 0:4edb816d21e1 114 }
ICTFBI 0:4edb816d21e1 115
ICTFBI 0:4edb816d21e1 116 int HTTPRequestHandler::writeData(const char* buf, int len)
ICTFBI 0:4edb816d21e1 117 {
ICTFBI 0:4edb816d21e1 118 if(!m_headersSent)
ICTFBI 0:4edb816d21e1 119 {
ICTFBI 0:4edb816d21e1 120 m_headersSent = true;
ICTFBI 0:4edb816d21e1 121 writeHeaders();
ICTFBI 0:4edb816d21e1 122 }
ICTFBI 0:4edb816d21e1 123
ICTFBI 0:4edb816d21e1 124 return m_pTCPSocket->send(buf, len);
ICTFBI 0:4edb816d21e1 125 }
ICTFBI 0:4edb816d21e1 126
ICTFBI 0:4edb816d21e1 127 void HTTPRequestHandler::setTimeout(int ms)
ICTFBI 0:4edb816d21e1 128 {
ICTFBI 0:4edb816d21e1 129 m_timeout = 1000*ms;
ICTFBI 0:4edb816d21e1 130 resetTimeout();
ICTFBI 0:4edb816d21e1 131 }
ICTFBI 0:4edb816d21e1 132
ICTFBI 0:4edb816d21e1 133 void HTTPRequestHandler::resetTimeout()
ICTFBI 0:4edb816d21e1 134 {
ICTFBI 0:4edb816d21e1 135 m_watchdog.detach();
ICTFBI 0:4edb816d21e1 136 m_watchdog.attach_us<HTTPRequestHandler>(this, &HTTPRequestHandler::onTimeout, m_timeout);
ICTFBI 0:4edb816d21e1 137 }
ICTFBI 0:4edb816d21e1 138
ICTFBI 0:4edb816d21e1 139
ICTFBI 0:4edb816d21e1 140 void HTTPRequestHandler::readHeaders()
ICTFBI 0:4edb816d21e1 141 {
ICTFBI 0:4edb816d21e1 142 static char line[128];
ICTFBI 0:4edb816d21e1 143 static char key[128];
ICTFBI 0:4edb816d21e1 144 static char value[128];
ICTFBI 0:4edb816d21e1 145 while( readLine(line, 128) > 0) //if == 0, it is an empty line = end of headers
ICTFBI 0:4edb816d21e1 146 {
ICTFBI 0:4edb816d21e1 147 int n = sscanf(line, "%[^:]: %[^\n]", key, value);
ICTFBI 0:4edb816d21e1 148 if ( n == 2 )
ICTFBI 0:4edb816d21e1 149 {
ICTFBI 0:4edb816d21e1 150 DBG("\r\nRead header : %s : %s\r\n", key, value);
ICTFBI 0:4edb816d21e1 151 m_reqHeaders[key] = value;
ICTFBI 0:4edb816d21e1 152 }
ICTFBI 0:4edb816d21e1 153 //TODO: Impl n==1 case (part 2 of previous header)
ICTFBI 0:4edb816d21e1 154 }
ICTFBI 0:4edb816d21e1 155 }
ICTFBI 0:4edb816d21e1 156
ICTFBI 0:4edb816d21e1 157 void HTTPRequestHandler::writeHeaders() //Called at the first writeData call
ICTFBI 0:4edb816d21e1 158 {
ICTFBI 0:4edb816d21e1 159 static char line[128];
ICTFBI 0:4edb816d21e1 160
ICTFBI 0:4edb816d21e1 161 //Response line
ICTFBI 0:4edb816d21e1 162 sprintf(line, "HTTP/1.1 %d MbedInfo\r\n", m_errc); //Not a violation of the standard not to include the descriptive text
ICTFBI 0:4edb816d21e1 163 m_pTCPSocket->send(line, strlen(line));
ICTFBI 0:4edb816d21e1 164
ICTFBI 0:4edb816d21e1 165 map<string,string>::iterator it;
ICTFBI 0:4edb816d21e1 166 while( !m_respHeaders.empty() )
ICTFBI 0:4edb816d21e1 167 {
ICTFBI 0:4edb816d21e1 168 it = m_respHeaders.begin();
ICTFBI 0:4edb816d21e1 169 sprintf(line, "%s: %s\r\n", (*it).first.c_str(), (*it).second.c_str() );
ICTFBI 0:4edb816d21e1 170 DBG("\r\n%s", line);
ICTFBI 0:4edb816d21e1 171 m_pTCPSocket->send(line, strlen(line));
ICTFBI 0:4edb816d21e1 172 m_respHeaders.erase(it);
ICTFBI 0:4edb816d21e1 173 }
ICTFBI 0:4edb816d21e1 174 m_pTCPSocket->send("\r\n",2); //End of head
ICTFBI 0:4edb816d21e1 175 }
ICTFBI 0:4edb816d21e1 176
ICTFBI 0:4edb816d21e1 177 int HTTPRequestHandler::readLine(char* str, int maxLen)
ICTFBI 0:4edb816d21e1 178 {
ICTFBI 0:4edb816d21e1 179 int ret;
ICTFBI 0:4edb816d21e1 180 int len = 0;
ICTFBI 0:4edb816d21e1 181 for(int i = 0; i < maxLen - 1; i++)
ICTFBI 0:4edb816d21e1 182 {
ICTFBI 0:4edb816d21e1 183 ret = m_pTCPSocket->recv(str, 1);
ICTFBI 0:4edb816d21e1 184 if(!ret)
ICTFBI 0:4edb816d21e1 185 {
ICTFBI 0:4edb816d21e1 186 break;
ICTFBI 0:4edb816d21e1 187 }
ICTFBI 0:4edb816d21e1 188 if( (len > 1) && *(str-1)=='\r' && *str=='\n' )
ICTFBI 0:4edb816d21e1 189 {
ICTFBI 0:4edb816d21e1 190 str--;
ICTFBI 0:4edb816d21e1 191 len-=2;
ICTFBI 0:4edb816d21e1 192 break;
ICTFBI 0:4edb816d21e1 193 }
ICTFBI 0:4edb816d21e1 194 else if( *str=='\n' )
ICTFBI 0:4edb816d21e1 195 {
ICTFBI 0:4edb816d21e1 196 len--;
ICTFBI 0:4edb816d21e1 197 break;
ICTFBI 0:4edb816d21e1 198 }
ICTFBI 0:4edb816d21e1 199 str++;
ICTFBI 0:4edb816d21e1 200 len++;
ICTFBI 0:4edb816d21e1 201 }
ICTFBI 0:4edb816d21e1 202 *str = 0;
ICTFBI 0:4edb816d21e1 203 return len;
ICTFBI 0:4edb816d21e1 204 }
ICTFBI 0:4edb816d21e1 205
ICTFBI 0:4edb816d21e1 206 void HTTPRequestHandler::onTCPSocketEvent(TCPSocketEvent e)
ICTFBI 0:4edb816d21e1 207 {
ICTFBI 0:4edb816d21e1 208
ICTFBI 0:4edb816d21e1 209 DBG("\r\nEvent %d in HTTPRequestHandler\r\n", e);
ICTFBI 0:4edb816d21e1 210
ICTFBI 0:4edb816d21e1 211 if(m_closed)
ICTFBI 0:4edb816d21e1 212 {
ICTFBI 0:4edb816d21e1 213 DBG("\r\nWARN: Discarded\r\n");
ICTFBI 0:4edb816d21e1 214 return;
ICTFBI 0:4edb816d21e1 215 }
ICTFBI 0:4edb816d21e1 216
ICTFBI 0:4edb816d21e1 217 switch(e)
ICTFBI 0:4edb816d21e1 218 {
ICTFBI 0:4edb816d21e1 219 case TCPSOCKET_READABLE:
ICTFBI 0:4edb816d21e1 220 resetTimeout();
ICTFBI 0:4edb816d21e1 221 onReadable();
ICTFBI 0:4edb816d21e1 222 break;
ICTFBI 0:4edb816d21e1 223 case TCPSOCKET_WRITEABLE:
ICTFBI 0:4edb816d21e1 224 resetTimeout();
ICTFBI 0:4edb816d21e1 225 onWriteable();
ICTFBI 0:4edb816d21e1 226 break;
ICTFBI 0:4edb816d21e1 227 case TCPSOCKET_CONTIMEOUT:
ICTFBI 0:4edb816d21e1 228 case TCPSOCKET_CONRST:
ICTFBI 0:4edb816d21e1 229 case TCPSOCKET_CONABRT:
ICTFBI 0:4edb816d21e1 230 case TCPSOCKET_ERROR:
ICTFBI 0:4edb816d21e1 231 case TCPSOCKET_DISCONNECTED:
ICTFBI 0:4edb816d21e1 232 DBG("\r\nConnection error in handler\r\n");
ICTFBI 0:4edb816d21e1 233 close();
ICTFBI 0:4edb816d21e1 234 break;
ICTFBI 0:4edb816d21e1 235 }
ICTFBI 0:4edb816d21e1 236
ICTFBI 0:4edb816d21e1 237 }