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Dependencies:   NTPClient_NetServices mbed

NetServices/services/http/server/HTTPRequestHandler.cpp@0:05ccbd4f84f1, 2013-12-02 (annotated)

Committer:
hendrikvincent
Date:
Mon Dec 02 09:01:23 2013 +0000
Revision:
0:05ccbd4f84f1
eerste programma;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hendrikvincent 0:05ccbd4f84f1 1
hendrikvincent 0:05ccbd4f84f1 2 /*
hendrikvincent 0:05ccbd4f84f1 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
hendrikvincent 0:05ccbd4f84f1 4
hendrikvincent 0:05ccbd4f84f1 5 Permission is hereby granted, free of charge, to any person obtaining a copy
hendrikvincent 0:05ccbd4f84f1 6 of this software and associated documentation files (the "Software"), to deal
hendrikvincent 0:05ccbd4f84f1 7 in the Software without restriction, including without limitation the rights
hendrikvincent 0:05ccbd4f84f1 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
hendrikvincent 0:05ccbd4f84f1 9 copies of the Software, and to permit persons to whom the Software is
hendrikvincent 0:05ccbd4f84f1 10 furnished to do so, subject to the following conditions:
hendrikvincent 0:05ccbd4f84f1 11
hendrikvincent 0:05ccbd4f84f1 12 The above copyright notice and this permission notice shall be included in
hendrikvincent 0:05ccbd4f84f1 13 all copies or substantial portions of the Software.
hendrikvincent 0:05ccbd4f84f1 14
hendrikvincent 0:05ccbd4f84f1 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
hendrikvincent 0:05ccbd4f84f1 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
hendrikvincent 0:05ccbd4f84f1 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
hendrikvincent 0:05ccbd4f84f1 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
hendrikvincent 0:05ccbd4f84f1 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
hendrikvincent 0:05ccbd4f84f1 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
hendrikvincent 0:05ccbd4f84f1 21 THE SOFTWARE.
hendrikvincent 0:05ccbd4f84f1 22 */
hendrikvincent 0:05ccbd4f84f1 23
hendrikvincent 0:05ccbd4f84f1 24 #include "core/netservice.h"
hendrikvincent 0:05ccbd4f84f1 25 #include "HTTPRequestHandler.h"
hendrikvincent 0:05ccbd4f84f1 26
hendrikvincent 0:05ccbd4f84f1 27 #include <string.h>
hendrikvincent 0:05ccbd4f84f1 28
hendrikvincent 0:05ccbd4f84f1 29 //#define __DEBUG
hendrikvincent 0:05ccbd4f84f1 30 #include "dbg/dbg.h"
hendrikvincent 0:05ccbd4f84f1 31
hendrikvincent 0:05ccbd4f84f1 32 #define HTTP_REQUEST_TIMEOUT 5000
hendrikvincent 0:05ccbd4f84f1 33
hendrikvincent 0:05ccbd4f84f1 34 HTTPRequestHandler::HTTPRequestHandler(const char* rootPath, const char* path, TCPSocket* pTCPSocket) : NetService(),
hendrikvincent 0:05ccbd4f84f1 35 m_pTCPSocket(pTCPSocket), m_reqHeaders(), m_respHeaders(),
hendrikvincent 0:05ccbd4f84f1 36 m_rootPath(rootPath), m_path(path), m_errc(200),
hendrikvincent 0:05ccbd4f84f1 37 m_watchdog(), m_timeout(0), m_closed(false), m_headersSent(false) //OK
hendrikvincent 0:05ccbd4f84f1 38 {
hendrikvincent 0:05ccbd4f84f1 39 //Read & parse headers
hendrikvincent 0:05ccbd4f84f1 40 readHeaders();
hendrikvincent 0:05ccbd4f84f1 41 m_pTCPSocket->setOnEvent(this, &HTTPRequestHandler::onTCPSocketEvent);
hendrikvincent 0:05ccbd4f84f1 42 setTimeout(HTTP_REQUEST_TIMEOUT);
hendrikvincent 0:05ccbd4f84f1 43 }
hendrikvincent 0:05ccbd4f84f1 44
hendrikvincent 0:05ccbd4f84f1 45 HTTPRequestHandler::~HTTPRequestHandler()
hendrikvincent 0:05ccbd4f84f1 46 {
hendrikvincent 0:05ccbd4f84f1 47 close();
hendrikvincent 0:05ccbd4f84f1 48 }
hendrikvincent 0:05ccbd4f84f1 49
hendrikvincent 0:05ccbd4f84f1 50 void HTTPRequestHandler::onTimeout() //Connection has timed out
hendrikvincent 0:05ccbd4f84f1 51 {
hendrikvincent 0:05ccbd4f84f1 52 close();
hendrikvincent 0:05ccbd4f84f1 53 }
hendrikvincent 0:05ccbd4f84f1 54
hendrikvincent 0:05ccbd4f84f1 55 void HTTPRequestHandler::close() //Close socket and destroy data
hendrikvincent 0:05ccbd4f84f1 56 {
hendrikvincent 0:05ccbd4f84f1 57 if(m_closed)
hendrikvincent 0:05ccbd4f84f1 58 return;
hendrikvincent 0:05ccbd4f84f1 59 m_closed = true; //Prevent recursive calling or calling on an object being destructed by someone else
hendrikvincent 0:05ccbd4f84f1 60 m_watchdog.detach();
hendrikvincent 0:05ccbd4f84f1 61 onClose();
hendrikvincent 0:05ccbd4f84f1 62 m_pTCPSocket->resetOnEvent();
hendrikvincent 0:05ccbd4f84f1 63 m_pTCPSocket->close();
hendrikvincent 0:05ccbd4f84f1 64 delete m_pTCPSocket; //Can safely destroy socket
hendrikvincent 0:05ccbd4f84f1 65 NetService::close();
hendrikvincent 0:05ccbd4f84f1 66 }
hendrikvincent 0:05ccbd4f84f1 67
hendrikvincent 0:05ccbd4f84f1 68 map<string, string>& HTTPRequestHandler::reqHeaders() //const
hendrikvincent 0:05ccbd4f84f1 69 {
hendrikvincent 0:05ccbd4f84f1 70 return m_reqHeaders;
hendrikvincent 0:05ccbd4f84f1 71 }
hendrikvincent 0:05ccbd4f84f1 72
hendrikvincent 0:05ccbd4f84f1 73 string& HTTPRequestHandler::path() //const
hendrikvincent 0:05ccbd4f84f1 74 {
hendrikvincent 0:05ccbd4f84f1 75 return m_path;
hendrikvincent 0:05ccbd4f84f1 76 }
hendrikvincent 0:05ccbd4f84f1 77
hendrikvincent 0:05ccbd4f84f1 78 int HTTPRequestHandler::dataLen() const
hendrikvincent 0:05ccbd4f84f1 79 {
hendrikvincent 0:05ccbd4f84f1 80 map<string,string>::iterator it;
hendrikvincent 0:05ccbd4f84f1 81 it = m_reqHeaders.find("Content-Length");
hendrikvincent 0:05ccbd4f84f1 82 if( it == m_reqHeaders.end() )
hendrikvincent 0:05ccbd4f84f1 83 {
hendrikvincent 0:05ccbd4f84f1 84 return 0;
hendrikvincent 0:05ccbd4f84f1 85 }
hendrikvincent 0:05ccbd4f84f1 86 return atoi((*it).second.c_str()); //return 0 if parse fails, so that's fine
hendrikvincent 0:05ccbd4f84f1 87 }
hendrikvincent 0:05ccbd4f84f1 88
hendrikvincent 0:05ccbd4f84f1 89 int HTTPRequestHandler::readData(char* buf, int len)
hendrikvincent 0:05ccbd4f84f1 90 {
hendrikvincent 0:05ccbd4f84f1 91 return m_pTCPSocket->recv(buf, len);
hendrikvincent 0:05ccbd4f84f1 92 }
hendrikvincent 0:05ccbd4f84f1 93
hendrikvincent 0:05ccbd4f84f1 94 string& HTTPRequestHandler::rootPath() //const
hendrikvincent 0:05ccbd4f84f1 95 {
hendrikvincent 0:05ccbd4f84f1 96 return m_rootPath;
hendrikvincent 0:05ccbd4f84f1 97 }
hendrikvincent 0:05ccbd4f84f1 98
hendrikvincent 0:05ccbd4f84f1 99 void HTTPRequestHandler::setErrCode(int errc)
hendrikvincent 0:05ccbd4f84f1 100 {
hendrikvincent 0:05ccbd4f84f1 101 m_errc = errc;
hendrikvincent 0:05ccbd4f84f1 102 }
hendrikvincent 0:05ccbd4f84f1 103
hendrikvincent 0:05ccbd4f84f1 104 void HTTPRequestHandler::setContentLen(int len)
hendrikvincent 0:05ccbd4f84f1 105 {
hendrikvincent 0:05ccbd4f84f1 106 char len_str[6] = {0};
hendrikvincent 0:05ccbd4f84f1 107 sprintf(len_str, "%d", len);
hendrikvincent 0:05ccbd4f84f1 108 respHeaders()["Content-Length"] = len_str;
hendrikvincent 0:05ccbd4f84f1 109 }
hendrikvincent 0:05ccbd4f84f1 110
hendrikvincent 0:05ccbd4f84f1 111 map<string, string>& HTTPRequestHandler::respHeaders()
hendrikvincent 0:05ccbd4f84f1 112 {
hendrikvincent 0:05ccbd4f84f1 113 return m_respHeaders;
hendrikvincent 0:05ccbd4f84f1 114 }
hendrikvincent 0:05ccbd4f84f1 115
hendrikvincent 0:05ccbd4f84f1 116 int HTTPRequestHandler::writeData(const char* buf, int len)
hendrikvincent 0:05ccbd4f84f1 117 {
hendrikvincent 0:05ccbd4f84f1 118 if(!m_headersSent)
hendrikvincent 0:05ccbd4f84f1 119 {
hendrikvincent 0:05ccbd4f84f1 120 m_headersSent = true;
hendrikvincent 0:05ccbd4f84f1 121 writeHeaders();
hendrikvincent 0:05ccbd4f84f1 122 }
hendrikvincent 0:05ccbd4f84f1 123
hendrikvincent 0:05ccbd4f84f1 124 return m_pTCPSocket->send(buf, len);
hendrikvincent 0:05ccbd4f84f1 125 }
hendrikvincent 0:05ccbd4f84f1 126
hendrikvincent 0:05ccbd4f84f1 127 void HTTPRequestHandler::setTimeout(int ms)
hendrikvincent 0:05ccbd4f84f1 128 {
hendrikvincent 0:05ccbd4f84f1 129 m_timeout = 1000*ms;
hendrikvincent 0:05ccbd4f84f1 130 resetTimeout();
hendrikvincent 0:05ccbd4f84f1 131 }
hendrikvincent 0:05ccbd4f84f1 132
hendrikvincent 0:05ccbd4f84f1 133 void HTTPRequestHandler::resetTimeout()
hendrikvincent 0:05ccbd4f84f1 134 {
hendrikvincent 0:05ccbd4f84f1 135 m_watchdog.detach();
hendrikvincent 0:05ccbd4f84f1 136 m_watchdog.attach_us<HTTPRequestHandler>(this, &HTTPRequestHandler::onTimeout, m_timeout);
hendrikvincent 0:05ccbd4f84f1 137 }
hendrikvincent 0:05ccbd4f84f1 138
hendrikvincent 0:05ccbd4f84f1 139
hendrikvincent 0:05ccbd4f84f1 140 void HTTPRequestHandler::readHeaders()
hendrikvincent 0:05ccbd4f84f1 141 {
hendrikvincent 0:05ccbd4f84f1 142 static char line[128];
hendrikvincent 0:05ccbd4f84f1 143 static char key[128];
hendrikvincent 0:05ccbd4f84f1 144 static char value[128];
hendrikvincent 0:05ccbd4f84f1 145 while( readLine(line, 128) > 0) //if == 0, it is an empty line = end of headers
hendrikvincent 0:05ccbd4f84f1 146 {
hendrikvincent 0:05ccbd4f84f1 147 int n = sscanf(line, "%[^:]: %[^\n]", key, value);
hendrikvincent 0:05ccbd4f84f1 148 if ( n == 2 )
hendrikvincent 0:05ccbd4f84f1 149 {
hendrikvincent 0:05ccbd4f84f1 150 DBG("\r\nRead header : %s : %s\r\n", key, value);
hendrikvincent 0:05ccbd4f84f1 151 m_reqHeaders[key] = value;
hendrikvincent 0:05ccbd4f84f1 152 }
hendrikvincent 0:05ccbd4f84f1 153 //TODO: Impl n==1 case (part 2 of previous header)
hendrikvincent 0:05ccbd4f84f1 154 }
hendrikvincent 0:05ccbd4f84f1 155 }
hendrikvincent 0:05ccbd4f84f1 156
hendrikvincent 0:05ccbd4f84f1 157 void HTTPRequestHandler::writeHeaders() //Called at the first writeData call
hendrikvincent 0:05ccbd4f84f1 158 {
hendrikvincent 0:05ccbd4f84f1 159 static char line[128];
hendrikvincent 0:05ccbd4f84f1 160
hendrikvincent 0:05ccbd4f84f1 161 //Response line
hendrikvincent 0:05ccbd4f84f1 162 sprintf(line, "HTTP/1.1 %d MbedInfo\r\n", m_errc); //Not a violation of the standard not to include the descriptive text
hendrikvincent 0:05ccbd4f84f1 163 m_pTCPSocket->send(line, strlen(line));
hendrikvincent 0:05ccbd4f84f1 164
hendrikvincent 0:05ccbd4f84f1 165 map<string,string>::iterator it;
hendrikvincent 0:05ccbd4f84f1 166 while( !m_respHeaders.empty() )
hendrikvincent 0:05ccbd4f84f1 167 {
hendrikvincent 0:05ccbd4f84f1 168 it = m_respHeaders.begin();
hendrikvincent 0:05ccbd4f84f1 169 sprintf(line, "%s: %s\r\n", (*it).first.c_str(), (*it).second.c_str() );
hendrikvincent 0:05ccbd4f84f1 170 DBG("\r\n%s", line);
hendrikvincent 0:05ccbd4f84f1 171 m_pTCPSocket->send(line, strlen(line));
hendrikvincent 0:05ccbd4f84f1 172 m_respHeaders.erase(it);
hendrikvincent 0:05ccbd4f84f1 173 }
hendrikvincent 0:05ccbd4f84f1 174 m_pTCPSocket->send("\r\n",2); //End of head
hendrikvincent 0:05ccbd4f84f1 175 }
hendrikvincent 0:05ccbd4f84f1 176
hendrikvincent 0:05ccbd4f84f1 177 int HTTPRequestHandler::readLine(char* str, int maxLen)
hendrikvincent 0:05ccbd4f84f1 178 {
hendrikvincent 0:05ccbd4f84f1 179 int ret;
hendrikvincent 0:05ccbd4f84f1 180 int len = 0;
hendrikvincent 0:05ccbd4f84f1 181 for(int i = 0; i < maxLen - 1; i++)
hendrikvincent 0:05ccbd4f84f1 182 {
hendrikvincent 0:05ccbd4f84f1 183 ret = m_pTCPSocket->recv(str, 1);
hendrikvincent 0:05ccbd4f84f1 184 if(!ret)
hendrikvincent 0:05ccbd4f84f1 185 {
hendrikvincent 0:05ccbd4f84f1 186 break;
hendrikvincent 0:05ccbd4f84f1 187 }
hendrikvincent 0:05ccbd4f84f1 188 if( (len > 1) && *(str-1)=='\r' && *str=='\n' )
hendrikvincent 0:05ccbd4f84f1 189 {
hendrikvincent 0:05ccbd4f84f1 190 str--;
hendrikvincent 0:05ccbd4f84f1 191 len-=2;
hendrikvincent 0:05ccbd4f84f1 192 break;
hendrikvincent 0:05ccbd4f84f1 193 }
hendrikvincent 0:05ccbd4f84f1 194 else if( *str=='\n' )
hendrikvincent 0:05ccbd4f84f1 195 {
hendrikvincent 0:05ccbd4f84f1 196 len--;
hendrikvincent 0:05ccbd4f84f1 197 break;
hendrikvincent 0:05ccbd4f84f1 198 }
hendrikvincent 0:05ccbd4f84f1 199 str++;
hendrikvincent 0:05ccbd4f84f1 200 len++;
hendrikvincent 0:05ccbd4f84f1 201 }
hendrikvincent 0:05ccbd4f84f1 202 *str = 0;
hendrikvincent 0:05ccbd4f84f1 203 return len;
hendrikvincent 0:05ccbd4f84f1 204 }
hendrikvincent 0:05ccbd4f84f1 205
hendrikvincent 0:05ccbd4f84f1 206 void HTTPRequestHandler::onTCPSocketEvent(TCPSocketEvent e)
hendrikvincent 0:05ccbd4f84f1 207 {
hendrikvincent 0:05ccbd4f84f1 208
hendrikvincent 0:05ccbd4f84f1 209 DBG("\r\nEvent %d in HTTPRequestHandler\r\n", e);
hendrikvincent 0:05ccbd4f84f1 210
hendrikvincent 0:05ccbd4f84f1 211 if(m_closed)
hendrikvincent 0:05ccbd4f84f1 212 {
hendrikvincent 0:05ccbd4f84f1 213 DBG("\r\nWARN: Discarded\r\n");
hendrikvincent 0:05ccbd4f84f1 214 return;
hendrikvincent 0:05ccbd4f84f1 215 }
hendrikvincent 0:05ccbd4f84f1 216
hendrikvincent 0:05ccbd4f84f1 217 switch(e)
hendrikvincent 0:05ccbd4f84f1 218 {
hendrikvincent 0:05ccbd4f84f1 219 case TCPSOCKET_READABLE:
hendrikvincent 0:05ccbd4f84f1 220 resetTimeout();
hendrikvincent 0:05ccbd4f84f1 221 onReadable();
hendrikvincent 0:05ccbd4f84f1 222 break;
hendrikvincent 0:05ccbd4f84f1 223 case TCPSOCKET_WRITEABLE:
hendrikvincent 0:05ccbd4f84f1 224 resetTimeout();
hendrikvincent 0:05ccbd4f84f1 225 onWriteable();
hendrikvincent 0:05ccbd4f84f1 226 break;
hendrikvincent 0:05ccbd4f84f1 227 case TCPSOCKET_CONTIMEOUT:
hendrikvincent 0:05ccbd4f84f1 228 case TCPSOCKET_CONRST:
hendrikvincent 0:05ccbd4f84f1 229 case TCPSOCKET_CONABRT:
hendrikvincent 0:05ccbd4f84f1 230 case TCPSOCKET_ERROR:
hendrikvincent 0:05ccbd4f84f1 231 case TCPSOCKET_DISCONNECTED:
hendrikvincent 0:05ccbd4f84f1 232 DBG("\r\nConnection error in handler\r\n");
hendrikvincent 0:05ccbd4f84f1 233 close();
hendrikvincent 0:05ccbd4f84f1 234 break;
hendrikvincent 0:05ccbd4f84f1 235 }
hendrikvincent 0:05ccbd4f84f1 236
hendrikvincent 0:05ccbd4f84f1 237 }