webservice.cpp

00001 /*
00002 * WebService library
00003 * Copyright (c) 2010 Hendrik Lipka
00004 * 
00005 * Permission is hereby granted, free of charge, to any person obtaining a copy
00006 * of this software and associated documentation files (the "Software"), to deal
00007 * in the Software without restriction, including without limitation the rights
00008 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00009 * copies of the Software, and to permit persons to whom the Software is
00010 * furnished to do so, subject to the following conditions:
00011 * 
00012 * The above copyright notice and this permission notice shall be included in
00013 * all copies or substantial portions of the Software.
00014 * 
00015 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00016 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00017 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00018 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00019 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00020 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00021 * THE SOFTWARE.
00022 */
00023 
00024 #include "Timer.h"
00025 
00026 #include "webservice.h"
00027 
00028 #include "spxmlnode.hpp"
00029 #include "spxmlhandle.hpp"
00030 
00031 WebService::WebService(const char* urlStr) {
00032     Url *url=new Url();
00033     url->fromString(urlStr);
00034     
00035 //    printf("host name from URL=%s\n",url->getHost().c_str());
00036 
00037     _stream=new TCPLineStream(url->getHost().c_str(),0==url->getPort()?80:url->getPort(),"\r\n");
00038     delete url;
00039 
00040     _request=string("GET ").append(urlStr).append(" HTTP/1.0\r\n");
00041 //    printf("request=[%s]\n",_request.c_str());
00042 }
00043 
00044 SP_XmlDomParser* WebService::callService() {
00045     if (!_stream->open())
00046         return NULL;
00047 
00048 //    printf("send request[%s]\n",request.c_str());
00049     _stream->sendLine(_request);
00050 
00051     string firstLine=_stream->readLine();
00052     // todo: parse for HTTP response
00053     // response must be for HTTP/1.0, and be 200
00054     if (0!=firstLine.compare("HTTP/1.0 200 OK")) {
00055         printf("call not sucessfull, response=%s\n",firstLine.c_str());
00056         return NULL;
00057     }
00058     // skip headers
00059     while (true) {
00060         string line=_stream->readLine();
00061 //        printf("header=[%s]\n",line.c_str());
00062         if (0==line.length())
00063             break;
00064     }
00065     SP_XmlDomParser *parser=new SP_XmlDomParser();
00066     while (true) {
00067         string line=_stream->readLine(1500);
00068 //        printf("content=[%s]\n",line.c_str());
00069         parser->append(line.c_str(),line.length());
00070         if (0==line.length())
00071             break;
00072     }
00073     _stream->close();
00074     return parser;
00075 }
00076 
00077 void WebService::close() {
00078     if (NULL!=_stream) {
00079         _stream->close();
00080         delete _stream;
00081         _stream=NULL;
00082     }
00083 }
00084