joshua Elsdon / Mbed 2 deprecated Email2Screen

Mac addr added ICRS

Dependencies:   mbed

Fork of Email2Screen by Oliver Mattos

NetServicesProxy/services/http/server/HTTPRequestHandler.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 "HTTPRequestHandler.h"
Hello1024 0:1619a6b826d7 26
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 #define HTTP_REQUEST_TIMEOUT 5000
Hello1024 0:1619a6b826d7 33
Hello1024 0:1619a6b826d7 34 HTTPRequestHandler::HTTPRequestHandler(const char* rootPath, const char* path, TCPSocket* pTCPSocket) : NetService(),
Hello1024 0:1619a6b826d7 35 m_pTCPSocket(pTCPSocket), m_reqHeaders(), m_respHeaders(),
Hello1024 0:1619a6b826d7 36 m_rootPath(rootPath), m_path(path), m_errc(200),
Hello1024 0:1619a6b826d7 37 m_watchdog(), m_timeout(0), m_closed(false), m_headersSent(false) //OK
Hello1024 0:1619a6b826d7 38 {
Hello1024 0:1619a6b826d7 39 //Read & parse headers
Hello1024 0:1619a6b826d7 40 readHeaders();
Hello1024 0:1619a6b826d7 41 m_pTCPSocket->setOnEvent(this, &HTTPRequestHandler::onTCPSocketEvent);
Hello1024 0:1619a6b826d7 42 setTimeout(HTTP_REQUEST_TIMEOUT);
Hello1024 0:1619a6b826d7 43 }
Hello1024 0:1619a6b826d7 44
Hello1024 0:1619a6b826d7 45 HTTPRequestHandler::~HTTPRequestHandler()
Hello1024 0:1619a6b826d7 46 {
Hello1024 0:1619a6b826d7 47 close();
Hello1024 0:1619a6b826d7 48 }
Hello1024 0:1619a6b826d7 49
Hello1024 0:1619a6b826d7 50 void HTTPRequestHandler::onTimeout() //Connection has timed out
Hello1024 0:1619a6b826d7 51 {
Hello1024 0:1619a6b826d7 52 close();
Hello1024 0:1619a6b826d7 53 }
Hello1024 0:1619a6b826d7 54
Hello1024 0:1619a6b826d7 55 void HTTPRequestHandler::close() //Close socket and destroy data
Hello1024 0:1619a6b826d7 56 {
Hello1024 0:1619a6b826d7 57 if(m_closed)
Hello1024 0:1619a6b826d7 58 return;
Hello1024 0:1619a6b826d7 59 m_closed = true; //Prevent recursive calling or calling on an object being destructed by someone else
Hello1024 0:1619a6b826d7 60 m_watchdog.detach();
Hello1024 0:1619a6b826d7 61 onClose();
Hello1024 0:1619a6b826d7 62 m_pTCPSocket->resetOnEvent();
Hello1024 0:1619a6b826d7 63 m_pTCPSocket->close();
Hello1024 0:1619a6b826d7 64 delete m_pTCPSocket; //Can safely destroy socket
Hello1024 0:1619a6b826d7 65 NetService::close();
Hello1024 0:1619a6b826d7 66 }
Hello1024 0:1619a6b826d7 67
Hello1024 0:1619a6b826d7 68 map<string, string>& HTTPRequestHandler::reqHeaders() //const
Hello1024 0:1619a6b826d7 69 {
Hello1024 0:1619a6b826d7 70 return m_reqHeaders;
Hello1024 0:1619a6b826d7 71 }
Hello1024 0:1619a6b826d7 72
Hello1024 0:1619a6b826d7 73 string& HTTPRequestHandler::path() //const
Hello1024 0:1619a6b826d7 74 {
Hello1024 0:1619a6b826d7 75 return m_path;
Hello1024 0:1619a6b826d7 76 }
Hello1024 0:1619a6b826d7 77
Hello1024 0:1619a6b826d7 78 int HTTPRequestHandler::dataLen() const
Hello1024 0:1619a6b826d7 79 {
Hello1024 0:1619a6b826d7 80 map<string,string>::iterator it;
Hello1024 0:1619a6b826d7 81 it = m_reqHeaders.find("Content-Length");
Hello1024 0:1619a6b826d7 82 if( it == m_reqHeaders.end() )
Hello1024 0:1619a6b826d7 83 {
Hello1024 0:1619a6b826d7 84 return 0;
Hello1024 0:1619a6b826d7 85 }
Hello1024 0:1619a6b826d7 86 return atoi((*it).second.c_str()); //return 0 if parse fails, so that's fine
Hello1024 0:1619a6b826d7 87 }
Hello1024 0:1619a6b826d7 88
Hello1024 0:1619a6b826d7 89 int HTTPRequestHandler::readData(char* buf, int len)
Hello1024 0:1619a6b826d7 90 {
Hello1024 0:1619a6b826d7 91 return m_pTCPSocket->recv(buf, len);
Hello1024 0:1619a6b826d7 92 }
Hello1024 0:1619a6b826d7 93
Hello1024 0:1619a6b826d7 94 string& HTTPRequestHandler::rootPath() //const
Hello1024 0:1619a6b826d7 95 {
Hello1024 0:1619a6b826d7 96 return m_rootPath;
Hello1024 0:1619a6b826d7 97 }
Hello1024 0:1619a6b826d7 98
Hello1024 0:1619a6b826d7 99 void HTTPRequestHandler::setErrCode(int errc)
Hello1024 0:1619a6b826d7 100 {
Hello1024 0:1619a6b826d7 101 m_errc = errc;
Hello1024 0:1619a6b826d7 102 }
Hello1024 0:1619a6b826d7 103
Hello1024 0:1619a6b826d7 104 void HTTPRequestHandler::setContentLen(int len)
Hello1024 0:1619a6b826d7 105 {
Hello1024 0:1619a6b826d7 106 char len_str[6] = {0};
Hello1024 0:1619a6b826d7 107 sprintf(len_str, "%d", len);
Hello1024 0:1619a6b826d7 108 respHeaders()["Content-Length"] = len_str;
Hello1024 0:1619a6b826d7 109 }
Hello1024 0:1619a6b826d7 110
Hello1024 0:1619a6b826d7 111 map<string, string>& HTTPRequestHandler::respHeaders()
Hello1024 0:1619a6b826d7 112 {
Hello1024 0:1619a6b826d7 113 return m_respHeaders;
Hello1024 0:1619a6b826d7 114 }
Hello1024 0:1619a6b826d7 115
Hello1024 0:1619a6b826d7 116 int HTTPRequestHandler::writeData(const char* buf, int len)
Hello1024 0:1619a6b826d7 117 {
Hello1024 0:1619a6b826d7 118 if(!m_headersSent)
Hello1024 0:1619a6b826d7 119 {
Hello1024 0:1619a6b826d7 120 m_headersSent = true;
Hello1024 0:1619a6b826d7 121 writeHeaders();
Hello1024 0:1619a6b826d7 122 }
Hello1024 0:1619a6b826d7 123
Hello1024 0:1619a6b826d7 124 return m_pTCPSocket->send(buf, len);
Hello1024 0:1619a6b826d7 125 }
Hello1024 0:1619a6b826d7 126
Hello1024 0:1619a6b826d7 127 void HTTPRequestHandler::setTimeout(int ms)
Hello1024 0:1619a6b826d7 128 {
Hello1024 0:1619a6b826d7 129 m_timeout = 1000*ms;
Hello1024 0:1619a6b826d7 130 resetTimeout();
Hello1024 0:1619a6b826d7 131 }
Hello1024 0:1619a6b826d7 132
Hello1024 0:1619a6b826d7 133 void HTTPRequestHandler::resetTimeout()
Hello1024 0:1619a6b826d7 134 {
Hello1024 0:1619a6b826d7 135 m_watchdog.detach();
Hello1024 0:1619a6b826d7 136 m_watchdog.attach_us<HTTPRequestHandler>(this, &HTTPRequestHandler::onTimeout, m_timeout);
Hello1024 0:1619a6b826d7 137 }
Hello1024 0:1619a6b826d7 138
Hello1024 0:1619a6b826d7 139
Hello1024 0:1619a6b826d7 140 void HTTPRequestHandler::readHeaders()
Hello1024 0:1619a6b826d7 141 {
Hello1024 0:1619a6b826d7 142 static char line[128];
Hello1024 0:1619a6b826d7 143 static char key[128];
Hello1024 0:1619a6b826d7 144 static char value[128];
Hello1024 0:1619a6b826d7 145 while( readLine(line, 128) > 0) //if == 0, it is an empty line = end of headers
Hello1024 0:1619a6b826d7 146 {
Hello1024 0:1619a6b826d7 147 int n = sscanf(line, "%[^:]: %[^\n]", key, value);
Hello1024 0:1619a6b826d7 148 if ( n == 2 )
Hello1024 0:1619a6b826d7 149 {
Hello1024 0:1619a6b826d7 150 DBG("\r\nRead header : %s : %s\r\n", key, value);
Hello1024 0:1619a6b826d7 151 m_reqHeaders[key] = value;
Hello1024 0:1619a6b826d7 152 }
Hello1024 0:1619a6b826d7 153 //TODO: Impl n==1 case (part 2 of previous header)
Hello1024 0:1619a6b826d7 154 }
Hello1024 0:1619a6b826d7 155 }
Hello1024 0:1619a6b826d7 156
Hello1024 0:1619a6b826d7 157 void HTTPRequestHandler::writeHeaders() //Called at the first writeData call
Hello1024 0:1619a6b826d7 158 {
Hello1024 0:1619a6b826d7 159 static char line[128];
Hello1024 0:1619a6b826d7 160
Hello1024 0:1619a6b826d7 161 //Response line
Hello1024 0:1619a6b826d7 162 sprintf(line, "HTTP/1.1 %d MbedInfo\r\n", m_errc); //Not a violation of the standard not to include the descriptive text
Hello1024 0:1619a6b826d7 163 m_pTCPSocket->send(line, strlen(line));
Hello1024 0:1619a6b826d7 164
Hello1024 0:1619a6b826d7 165 map<string,string>::iterator it;
Hello1024 0:1619a6b826d7 166 while( !m_respHeaders.empty() )
Hello1024 0:1619a6b826d7 167 {
Hello1024 0:1619a6b826d7 168 it = m_respHeaders.begin();
Hello1024 0:1619a6b826d7 169 sprintf(line, "%s: %s\r\n", (*it).first.c_str(), (*it).second.c_str() );
Hello1024 0:1619a6b826d7 170 DBG("\r\n%s", line);
Hello1024 0:1619a6b826d7 171 m_pTCPSocket->send(line, strlen(line));
Hello1024 0:1619a6b826d7 172 m_respHeaders.erase(it);
Hello1024 0:1619a6b826d7 173 }
Hello1024 0:1619a6b826d7 174 m_pTCPSocket->send("\r\n",2); //End of head
Hello1024 0:1619a6b826d7 175 }
Hello1024 0:1619a6b826d7 176
Hello1024 0:1619a6b826d7 177 int HTTPRequestHandler::readLine(char* str, int maxLen)
Hello1024 0:1619a6b826d7 178 {
Hello1024 0:1619a6b826d7 179 int ret;
Hello1024 0:1619a6b826d7 180 int len = 0;
Hello1024 0:1619a6b826d7 181 for(int i = 0; i < maxLen - 1; i++)
Hello1024 0:1619a6b826d7 182 {
Hello1024 0:1619a6b826d7 183 ret = m_pTCPSocket->recv(str, 1);
Hello1024 0:1619a6b826d7 184 if(!ret)
Hello1024 0:1619a6b826d7 185 {
Hello1024 0:1619a6b826d7 186 break;
Hello1024 0:1619a6b826d7 187 }
Hello1024 0:1619a6b826d7 188 if( (len > 1) && *(str-1)=='\r' && *str=='\n' )
Hello1024 0:1619a6b826d7 189 {
Hello1024 0:1619a6b826d7 190 str--;
Hello1024 0:1619a6b826d7 191 len-=2;
Hello1024 0:1619a6b826d7 192 break;
Hello1024 0:1619a6b826d7 193 }
Hello1024 0:1619a6b826d7 194 else if( *str=='\n' )
Hello1024 0:1619a6b826d7 195 {
Hello1024 0:1619a6b826d7 196 len--;
Hello1024 0:1619a6b826d7 197 break;
Hello1024 0:1619a6b826d7 198 }
Hello1024 0:1619a6b826d7 199 str++;
Hello1024 0:1619a6b826d7 200 len++;
Hello1024 0:1619a6b826d7 201 }
Hello1024 0:1619a6b826d7 202 *str = 0;
Hello1024 0:1619a6b826d7 203 return len;
Hello1024 0:1619a6b826d7 204 }
Hello1024 0:1619a6b826d7 205
Hello1024 0:1619a6b826d7 206 void HTTPRequestHandler::onTCPSocketEvent(TCPSocketEvent e)
Hello1024 0:1619a6b826d7 207 {
Hello1024 0:1619a6b826d7 208
Hello1024 0:1619a6b826d7 209 DBG("\r\nEvent %d in HTTPRequestHandler\r\n", e);
Hello1024 0:1619a6b826d7 210
Hello1024 0:1619a6b826d7 211 if(m_closed)
Hello1024 0:1619a6b826d7 212 {
Hello1024 0:1619a6b826d7 213 DBG("\r\nWARN: Discarded\r\n");
Hello1024 0:1619a6b826d7 214 return;
Hello1024 0:1619a6b826d7 215 }
Hello1024 0:1619a6b826d7 216
Hello1024 0:1619a6b826d7 217 switch(e)
Hello1024 0:1619a6b826d7 218 {
Hello1024 0:1619a6b826d7 219 case TCPSOCKET_READABLE:
Hello1024 0:1619a6b826d7 220 resetTimeout();
Hello1024 0:1619a6b826d7 221 onReadable();
Hello1024 0:1619a6b826d7 222 break;
Hello1024 0:1619a6b826d7 223 case TCPSOCKET_WRITEABLE:
Hello1024 0:1619a6b826d7 224 resetTimeout();
Hello1024 0:1619a6b826d7 225 onWriteable();
Hello1024 0:1619a6b826d7 226 break;
Hello1024 0:1619a6b826d7 227 case TCPSOCKET_CONTIMEOUT:
Hello1024 0:1619a6b826d7 228 case TCPSOCKET_CONRST:
Hello1024 0:1619a6b826d7 229 case TCPSOCKET_CONABRT:
Hello1024 0:1619a6b826d7 230 case TCPSOCKET_ERROR:
Hello1024 0:1619a6b826d7 231 case TCPSOCKET_DISCONNECTED:
Hello1024 0:1619a6b826d7 232 DBG("\r\nConnection error in handler\r\n");
Hello1024 0:1619a6b826d7 233 close();
Hello1024 0:1619a6b826d7 234 break;
Hello1024 0:1619a6b826d7 235 }
Hello1024 0:1619a6b826d7 236
Hello1024 0:1619a6b826d7 237 }