rbutil/rbutilqt/httpget.cpp

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  *
   9  *   Copyright (C) 2007 by Dominik Riebeling
  10  *   $Id$
  11  *
  12  * All files in this archive are subject to the GNU General Public License.
  13  * See the file COPYING in the source tree root for full license agreement.
  14  *
  15  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  16  * KIND, either express or implied.
  17  *
  18  ****************************************************************************/
  19
  20 #include <QtCore>
  21 #include <QtNetwork>
  22 #include <QtDebug>
  23
  24 #include "httpget.h"
  25
  26
  27 HttpGet::HttpGet(QObject *parent)
  28     : QObject(parent)
  29 {
  30     qDebug() << "--> HttpGet::HttpGet()";
  31     outputToBuffer = true;
  32     getRequest = -1;
  33     connect(&http, SIGNAL(done(bool)), this, SLOT(httpDone(bool)));
  34     connect(&http, SIGNAL(dataReadProgress(int, int)), this, SLOT(httpProgress(int, int)));
  35     connect(&http, SIGNAL(requestFinished(int, bool)), this, SLOT(httpFinished(int, bool)));
  36     connect(&http, SIGNAL(responseHeaderReceived(const QHttpResponseHeader&)), this, SLOT(httpResponseHeader(const QHttpResponseHeader&)));
  37     connect(&http, SIGNAL(stateChanged(int)), this, SLOT(httpState(int)));
  38     connect(&http, SIGNAL(requestStarted(int)), this, SLOT(httpStarted(int)));
  39
  40     connect(&http, SIGNAL(readyRead(const QHttpResponseHeader&)), this, SLOT(httpResponseHeader(const QHttpResponseHeader&)));
  41
  42 }
  43
  44
  45 QByteArray HttpGet::readAll()
  46 {
  47     return dataBuffer;
  48 }
  49
  50
  51 QHttp::Error HttpGet::error()
  52 {
  53     return http.error();
  54 }
  55
  56
  57 void HttpGet::httpProgress(int read, int total)
  58 {
  59     emit dataReadProgress(read, total);
  60 }
  61
  62
  63 void HttpGet::setProxy(const QUrl &proxy)
  64 {
  65     qDebug() << "HttpGet::setProxy" << proxy.toString();
  66     http.setProxy(proxy.host(), proxy.port(), proxy.userName(), proxy.password());
  67 }
  68
  69
  70 void HttpGet::setFile(QFile *file)
  71 {
  72     outputFile = file;
  73     outputToBuffer = false;
  74     qDebug() << "HttpGet::setFile" << outputFile->fileName();
  75 }
  76
  77
  78 void HttpGet::abort()
  79 {
  80     http.abort();
  81     if(!outputToBuffer)
  82         outputFile->close();
  83 }
  84
  85
  86 bool HttpGet::getFile(const QUrl &url)
  87 {
  88     if (!url.isValid()) {
  89         qDebug() << "Error: Invalid URL" << endl;
  90         return false;
  91     }
  92
  93     if (url.scheme() != "http") {
  94         qDebug() << "Error: URL must start with 'http:'" << endl;
  95         return false;
  96     }
  97
  98     if (url.path().isEmpty()) {
  99         qDebug() << "Error: URL has no path" << endl;
 100         return false;
 101     }
 102     // if no output file was set write to buffer
 103     if(!outputToBuffer) {
 104         if (!outputFile->open(QIODevice::ReadWrite)) {
 105             qDebug() << "Error: Cannot open " << qPrintable(outputFile->fileName())
 106                 << " for writing: " << qPrintable(outputFile->errorString())
 107                 << endl;
 108             return false;
 109         }
 110     }
 111     http.setHost(url.host(), url.port(80));
 112     if(outputToBuffer) {
 113         qDebug() << "downloading to buffer:" << QString(url.toEncoded());
 114         getRequest = http.get(QString(url.toEncoded()));
 115     }
 116     else {
 117         qDebug() << "downloading to file:" << QString(url.toEncoded()) << qPrintable(outputFile->fileName());
 118         getRequest = http.get(QString(url.toEncoded()), outputFile);
 119     }
 120     qDebug() << "request scheduled: GET" << getRequest;
 121
 122     http.close();
 123     return true;
 124 }
 125
 126
 127 void HttpGet::httpDone(bool error)
 128 {
 129     if (error) {
 130         qDebug() << "Error: " << qPrintable(http.errorString()) << endl;
 131     }
 132     if(!outputToBuffer) {
 133         outputFile->close();
 134         qDebug() << "File downloaded as" << qPrintable(outputFile->fileName());
 135     }
 136     else qDebug() << "file downloaded to buffer";
 137
 138     emit done(error);
 139 }
 140
 141
 142 void HttpGet::httpFinished(int id, bool error)
 143 {
 144     qDebug() << "HttpGet::httpFinished(int, bool) =" << id << error;
 145     if(id == getRequest) dataBuffer = http.readAll();
 146     qDebug() << "pending:" << http.hasPendingRequests();
 147     //if(!http.hasPendingRequests()) httpDone(error);
 148     emit requestFinished(id, error);
 149
 150 }
 151
 152 void HttpGet::httpStarted(int id)
 153 {
 154     qDebug() << "HttpGet::httpStarted(int) =" << id;
 155 }
 156
 157
 158 QString HttpGet::errorString()
 159 {
 160     return http.errorString();
 161 }
 162
 163
 164 void HttpGet::httpResponseHeader(const QHttpResponseHeader &resp)
 165 {
 166     // if there is a network error abort all scheduled requests for
 167     // this download
 168     response = resp.statusCode();
 169     if(response != 200) http.abort();
 170 }
 171
 172
 173 int HttpGet::httpResponse()
 174 {
 175     return response;
 176 }
 177
 178
 179 void HttpGet::httpState(int state)
 180 {
 181     QString s[] = {"Unconnected", "HostLookup", "Connecting", "Sending",
 182         "Reading", "Connected", "Closing"};
 183     if(state <= 6)
 184         qDebug() << "HttpGet::httpState() = " << s[state];
 185     else qDebug() << "HttpGet::httpState() = " << state;
 186 }
 187