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Dependencies:   mbed

NetServices/services/http/server/HTTPRequestHandler.cpp@1:f5ac63519541, 2014-03-05 (annotated)

Committer:
Michael J. Spencer
Date:
Wed Mar 05 06:14:02 2014 -0800
Revision:
1:f5ac63519541
Initial commit.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Michael J. Spencer 1:f5ac63519541 1
Michael J. Spencer 1:f5ac63519541 2 /*
Michael J. Spencer 1:f5ac63519541 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
Michael J. Spencer 1:f5ac63519541 4
Michael J. Spencer 1:f5ac63519541 5 Permission is hereby granted, free of charge, to any person obtaining a copy
Michael J. Spencer 1:f5ac63519541 6 of this software and associated documentation files (the "Software"), to deal
Michael J. Spencer 1:f5ac63519541 7 in the Software without restriction, including without limitation the rights
Michael J. Spencer 1:f5ac63519541 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
Michael J. Spencer 1:f5ac63519541 9 copies of the Software, and to permit persons to whom the Software is
Michael J. Spencer 1:f5ac63519541 10 furnished to do so, subject to the following conditions:
Michael J. Spencer 1:f5ac63519541 11
Michael J. Spencer 1:f5ac63519541 12 The above copyright notice and this permission notice shall be included in
Michael J. Spencer 1:f5ac63519541 13 all copies or substantial portions of the Software.
Michael J. Spencer 1:f5ac63519541 14
Michael J. Spencer 1:f5ac63519541 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
Michael J. Spencer 1:f5ac63519541 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
Michael J. Spencer 1:f5ac63519541 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
Michael J. Spencer 1:f5ac63519541 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
Michael J. Spencer 1:f5ac63519541 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Michael J. Spencer 1:f5ac63519541 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
Michael J. Spencer 1:f5ac63519541 21 THE SOFTWARE.
Michael J. Spencer 1:f5ac63519541 22 */
Michael J. Spencer 1:f5ac63519541 23
Michael J. Spencer 1:f5ac63519541 24 #include "core/netservice.h"
Michael J. Spencer 1:f5ac63519541 25 #include "HTTPRequestHandler.h"
Michael J. Spencer 1:f5ac63519541 26
Michael J. Spencer 1:f5ac63519541 27 #include <string.h>
Michael J. Spencer 1:f5ac63519541 28
Michael J. Spencer 1:f5ac63519541 29 //#define __DEBUG
Michael J. Spencer 1:f5ac63519541 30 #include "dbg/dbg.h"
Michael J. Spencer 1:f5ac63519541 31
Michael J. Spencer 1:f5ac63519541 32 #define HTTP_REQUEST_TIMEOUT 5000
Michael J. Spencer 1:f5ac63519541 33
Michael J. Spencer 1:f5ac63519541 34 HTTPRequestHandler::HTTPRequestHandler(const char* rootPath, const char* path, TCPSocket* pTCPSocket) : NetService(),
Michael J. Spencer 1:f5ac63519541 35 m_pTCPSocket(pTCPSocket), m_reqHeaders(), m_respHeaders(),
Michael J. Spencer 1:f5ac63519541 36 m_rootPath(rootPath), m_path(path), m_errc(200),
Michael J. Spencer 1:f5ac63519541 37 m_watchdog(), m_timeout(0), m_closed(false), m_headersSent(false) //OK
Michael J. Spencer 1:f5ac63519541 38 {
Michael J. Spencer 1:f5ac63519541 39 //Read & parse headers
Michael J. Spencer 1:f5ac63519541 40 readHeaders();
Michael J. Spencer 1:f5ac63519541 41 m_pTCPSocket->setOnEvent(this, &HTTPRequestHandler::onTCPSocketEvent);
Michael J. Spencer 1:f5ac63519541 42 setTimeout(HTTP_REQUEST_TIMEOUT);
Michael J. Spencer 1:f5ac63519541 43 }
Michael J. Spencer 1:f5ac63519541 44
Michael J. Spencer 1:f5ac63519541 45 HTTPRequestHandler::~HTTPRequestHandler()
Michael J. Spencer 1:f5ac63519541 46 {
Michael J. Spencer 1:f5ac63519541 47 close();
Michael J. Spencer 1:f5ac63519541 48 }
Michael J. Spencer 1:f5ac63519541 49
Michael J. Spencer 1:f5ac63519541 50 void HTTPRequestHandler::onTimeout() //Connection has timed out
Michael J. Spencer 1:f5ac63519541 51 {
Michael J. Spencer 1:f5ac63519541 52 close();
Michael J. Spencer 1:f5ac63519541 53 }
Michael J. Spencer 1:f5ac63519541 54
Michael J. Spencer 1:f5ac63519541 55 void HTTPRequestHandler::close() //Close socket and destroy data
Michael J. Spencer 1:f5ac63519541 56 {
Michael J. Spencer 1:f5ac63519541 57 if(m_closed)
Michael J. Spencer 1:f5ac63519541 58 return;
Michael J. Spencer 1:f5ac63519541 59 m_closed = true; //Prevent recursive calling or calling on an object being destructed by someone else
Michael J. Spencer 1:f5ac63519541 60 m_watchdog.detach();
Michael J. Spencer 1:f5ac63519541 61 onClose();
Michael J. Spencer 1:f5ac63519541 62 m_pTCPSocket->resetOnEvent();
Michael J. Spencer 1:f5ac63519541 63 m_pTCPSocket->close();
Michael J. Spencer 1:f5ac63519541 64 delete m_pTCPSocket; //Can safely destroy socket
Michael J. Spencer 1:f5ac63519541 65 NetService::close();
Michael J. Spencer 1:f5ac63519541 66 }
Michael J. Spencer 1:f5ac63519541 67
Michael J. Spencer 1:f5ac63519541 68 map<string, string>& HTTPRequestHandler::reqHeaders() //const
Michael J. Spencer 1:f5ac63519541 69 {
Michael J. Spencer 1:f5ac63519541 70 return m_reqHeaders;
Michael J. Spencer 1:f5ac63519541 71 }
Michael J. Spencer 1:f5ac63519541 72
Michael J. Spencer 1:f5ac63519541 73 string& HTTPRequestHandler::path() //const
Michael J. Spencer 1:f5ac63519541 74 {
Michael J. Spencer 1:f5ac63519541 75 return m_path;
Michael J. Spencer 1:f5ac63519541 76 }
Michael J. Spencer 1:f5ac63519541 77
Michael J. Spencer 1:f5ac63519541 78 int HTTPRequestHandler::dataLen() const
Michael J. Spencer 1:f5ac63519541 79 {
Michael J. Spencer 1:f5ac63519541 80 map<string,string>::const_iterator it;
Michael J. Spencer 1:f5ac63519541 81 it = m_reqHeaders.find("Content-Length");
Michael J. Spencer 1:f5ac63519541 82 if( it == m_reqHeaders.end() )
Michael J. Spencer 1:f5ac63519541 83 {
Michael J. Spencer 1:f5ac63519541 84 return 0;
Michael J. Spencer 1:f5ac63519541 85 }
Michael J. Spencer 1:f5ac63519541 86 return atoi((*it).second.c_str()); //return 0 if parse fails, so that's fine
Michael J. Spencer 1:f5ac63519541 87 }
Michael J. Spencer 1:f5ac63519541 88
Michael J. Spencer 1:f5ac63519541 89 int HTTPRequestHandler::readData(char* buf, int len)
Michael J. Spencer 1:f5ac63519541 90 {
Michael J. Spencer 1:f5ac63519541 91 return m_pTCPSocket->recv(buf, len);
Michael J. Spencer 1:f5ac63519541 92 }
Michael J. Spencer 1:f5ac63519541 93
Michael J. Spencer 1:f5ac63519541 94 string& HTTPRequestHandler::rootPath() //const
Michael J. Spencer 1:f5ac63519541 95 {
Michael J. Spencer 1:f5ac63519541 96 return m_rootPath;
Michael J. Spencer 1:f5ac63519541 97 }
Michael J. Spencer 1:f5ac63519541 98
Michael J. Spencer 1:f5ac63519541 99 void HTTPRequestHandler::setErrCode(int errc)
Michael J. Spencer 1:f5ac63519541 100 {
Michael J. Spencer 1:f5ac63519541 101 m_errc = errc;
Michael J. Spencer 1:f5ac63519541 102 }
Michael J. Spencer 1:f5ac63519541 103
Michael J. Spencer 1:f5ac63519541 104 void HTTPRequestHandler::setContentLen(int len)
Michael J. Spencer 1:f5ac63519541 105 {
Michael J. Spencer 1:f5ac63519541 106 char len_str[6] = {0};
Michael J. Spencer 1:f5ac63519541 107 sprintf(len_str, "%d", len);
Michael J. Spencer 1:f5ac63519541 108 respHeaders()["Content-Length"] = len_str;
Michael J. Spencer 1:f5ac63519541 109 }
Michael J. Spencer 1:f5ac63519541 110
Michael J. Spencer 1:f5ac63519541 111 map<string, string>& HTTPRequestHandler::respHeaders()
Michael J. Spencer 1:f5ac63519541 112 {
Michael J. Spencer 1:f5ac63519541 113 return m_respHeaders;
Michael J. Spencer 1:f5ac63519541 114 }
Michael J. Spencer 1:f5ac63519541 115
Michael J. Spencer 1:f5ac63519541 116 int HTTPRequestHandler::writeData(const char* buf, int len)
Michael J. Spencer 1:f5ac63519541 117 {
Michael J. Spencer 1:f5ac63519541 118 if(!m_headersSent)
Michael J. Spencer 1:f5ac63519541 119 {
Michael J. Spencer 1:f5ac63519541 120 m_headersSent = true;
Michael J. Spencer 1:f5ac63519541 121 writeHeaders();
Michael J. Spencer 1:f5ac63519541 122 }
Michael J. Spencer 1:f5ac63519541 123
Michael J. Spencer 1:f5ac63519541 124 return m_pTCPSocket->send(buf, len);
Michael J. Spencer 1:f5ac63519541 125 }
Michael J. Spencer 1:f5ac63519541 126
Michael J. Spencer 1:f5ac63519541 127 void HTTPRequestHandler::setTimeout(int ms)
Michael J. Spencer 1:f5ac63519541 128 {
Michael J. Spencer 1:f5ac63519541 129 m_timeout = 1000*ms;
Michael J. Spencer 1:f5ac63519541 130 resetTimeout();
Michael J. Spencer 1:f5ac63519541 131 }
Michael J. Spencer 1:f5ac63519541 132
Michael J. Spencer 1:f5ac63519541 133 void HTTPRequestHandler::resetTimeout()
Michael J. Spencer 1:f5ac63519541 134 {
Michael J. Spencer 1:f5ac63519541 135 m_watchdog.detach();
Michael J. Spencer 1:f5ac63519541 136 m_watchdog.attach_us<HTTPRequestHandler>(this, &HTTPRequestHandler::onTimeout, m_timeout);
Michael J. Spencer 1:f5ac63519541 137 }
Michael J. Spencer 1:f5ac63519541 138
Michael J. Spencer 1:f5ac63519541 139
Michael J. Spencer 1:f5ac63519541 140 void HTTPRequestHandler::readHeaders()
Michael J. Spencer 1:f5ac63519541 141 {
Michael J. Spencer 1:f5ac63519541 142 static char line[128];
Michael J. Spencer 1:f5ac63519541 143 static char key[128];
Michael J. Spencer 1:f5ac63519541 144 static char value[128];
Michael J. Spencer 1:f5ac63519541 145 while( readLine(line, 128) > 0) //if == 0, it is an empty line = end of headers
Michael J. Spencer 1:f5ac63519541 146 {
Michael J. Spencer 1:f5ac63519541 147 int n = sscanf(line, "%[^:]: %[^\n]", key, value);
Michael J. Spencer 1:f5ac63519541 148 if ( n == 2 )
Michael J. Spencer 1:f5ac63519541 149 {
Michael J. Spencer 1:f5ac63519541 150 DBG("\r\nRead header : %s : %s\r\n", key, value);
Michael J. Spencer 1:f5ac63519541 151 m_reqHeaders[key] = value;
Michael J. Spencer 1:f5ac63519541 152 }
Michael J. Spencer 1:f5ac63519541 153 //TODO: Impl n==1 case (part 2 of previous header)
Michael J. Spencer 1:f5ac63519541 154 }
Michael J. Spencer 1:f5ac63519541 155 }
Michael J. Spencer 1:f5ac63519541 156
Michael J. Spencer 1:f5ac63519541 157 void HTTPRequestHandler::writeHeaders() //Called at the first writeData call
Michael J. Spencer 1:f5ac63519541 158 {
Michael J. Spencer 1:f5ac63519541 159 static char line[128];
Michael J. Spencer 1:f5ac63519541 160
Michael J. Spencer 1:f5ac63519541 161 //Response line
Michael J. Spencer 1:f5ac63519541 162 sprintf(line, "HTTP/1.1 %d MbedInfo\r\n", m_errc); //Not a violation of the standard not to include the descriptive text
Michael J. Spencer 1:f5ac63519541 163 m_pTCPSocket->send(line, strlen(line));
Michael J. Spencer 1:f5ac63519541 164
Michael J. Spencer 1:f5ac63519541 165 map<string,string>::iterator it;
Michael J. Spencer 1:f5ac63519541 166 while( !m_respHeaders.empty() )
Michael J. Spencer 1:f5ac63519541 167 {
Michael J. Spencer 1:f5ac63519541 168 it = m_respHeaders.begin();
Michael J. Spencer 1:f5ac63519541 169 sprintf(line, "%s: %s\r\n", (*it).first.c_str(), (*it).second.c_str() );
Michael J. Spencer 1:f5ac63519541 170 DBG("\r\n%s", line);
Michael J. Spencer 1:f5ac63519541 171 m_pTCPSocket->send(line, strlen(line));
Michael J. Spencer 1:f5ac63519541 172 m_respHeaders.erase(it);
Michael J. Spencer 1:f5ac63519541 173 }
Michael J. Spencer 1:f5ac63519541 174 m_pTCPSocket->send("\r\n",2); //End of head
Michael J. Spencer 1:f5ac63519541 175 }
Michael J. Spencer 1:f5ac63519541 176
Michael J. Spencer 1:f5ac63519541 177 int HTTPRequestHandler::readLine(char* str, int maxLen)
Michael J. Spencer 1:f5ac63519541 178 {
Michael J. Spencer 1:f5ac63519541 179 int ret;
Michael J. Spencer 1:f5ac63519541 180 int len = 0;
Michael J. Spencer 1:f5ac63519541 181 for(int i = 0; i < maxLen - 1; i++)
Michael J. Spencer 1:f5ac63519541 182 {
Michael J. Spencer 1:f5ac63519541 183 ret = m_pTCPSocket->recv(str, 1);
Michael J. Spencer 1:f5ac63519541 184 if(!ret)
Michael J. Spencer 1:f5ac63519541 185 {
Michael J. Spencer 1:f5ac63519541 186 break;
Michael J. Spencer 1:f5ac63519541 187 }
Michael J. Spencer 1:f5ac63519541 188 if( (len > 1) && *(str-1)=='\r' && *str=='\n' )
Michael J. Spencer 1:f5ac63519541 189 {
Michael J. Spencer 1:f5ac63519541 190 str--;
Michael J. Spencer 1:f5ac63519541 191 len-=2;
Michael J. Spencer 1:f5ac63519541 192 break;
Michael J. Spencer 1:f5ac63519541 193 }
Michael J. Spencer 1:f5ac63519541 194 else if( *str=='\n' )
Michael J. Spencer 1:f5ac63519541 195 {
Michael J. Spencer 1:f5ac63519541 196 len--;
Michael J. Spencer 1:f5ac63519541 197 break;
Michael J. Spencer 1:f5ac63519541 198 }
Michael J. Spencer 1:f5ac63519541 199 str++;
Michael J. Spencer 1:f5ac63519541 200 len++;
Michael J. Spencer 1:f5ac63519541 201 }
Michael J. Spencer 1:f5ac63519541 202 *str = 0;
Michael J. Spencer 1:f5ac63519541 203 return len;
Michael J. Spencer 1:f5ac63519541 204 }
Michael J. Spencer 1:f5ac63519541 205
Michael J. Spencer 1:f5ac63519541 206 void HTTPRequestHandler::onTCPSocketEvent(TCPSocketEvent e)
Michael J. Spencer 1:f5ac63519541 207 {
Michael J. Spencer 1:f5ac63519541 208
Michael J. Spencer 1:f5ac63519541 209 DBG("\r\nEvent %d in HTTPRequestHandler\r\n", e);
Michael J. Spencer 1:f5ac63519541 210
Michael J. Spencer 1:f5ac63519541 211 if(m_closed)
Michael J. Spencer 1:f5ac63519541 212 {
Michael J. Spencer 1:f5ac63519541 213 DBG("\r\nWARN: Discarded\r\n");
Michael J. Spencer 1:f5ac63519541 214 return;
Michael J. Spencer 1:f5ac63519541 215 }
Michael J. Spencer 1:f5ac63519541 216
Michael J. Spencer 1:f5ac63519541 217 switch(e)
Michael J. Spencer 1:f5ac63519541 218 {
Michael J. Spencer 1:f5ac63519541 219 case TCPSOCKET_READABLE:
Michael J. Spencer 1:f5ac63519541 220 resetTimeout();
Michael J. Spencer 1:f5ac63519541 221 onReadable();
Michael J. Spencer 1:f5ac63519541 222 break;
Michael J. Spencer 1:f5ac63519541 223 case TCPSOCKET_WRITEABLE:
Michael J. Spencer 1:f5ac63519541 224 resetTimeout();
Michael J. Spencer 1:f5ac63519541 225 onWriteable();
Michael J. Spencer 1:f5ac63519541 226 break;
Michael J. Spencer 1:f5ac63519541 227 case TCPSOCKET_CONTIMEOUT:
Michael J. Spencer 1:f5ac63519541 228 case TCPSOCKET_CONRST:
Michael J. Spencer 1:f5ac63519541 229 case TCPSOCKET_CONABRT:
Michael J. Spencer 1:f5ac63519541 230 case TCPSOCKET_ERROR:
Michael J. Spencer 1:f5ac63519541 231 case TCPSOCKET_DISCONNECTED:
Michael J. Spencer 1:f5ac63519541 232 DBG("\r\nConnection error in handler\r\n");
Michael J. Spencer 1:f5ac63519541 233 close();
Michael J. Spencer 1:f5ac63519541 234 break;
Michael J. Spencer 1:f5ac63519541 235 }
Michael J. Spencer 1:f5ac63519541 236
Michael J. Spencer 1:f5ac63519541 237 }