src/gui/downloadfromurldialog.cpp

   1 /*
   2  * Bittorrent Client using Qt and libtorrent.
   3  * Copyright (C) 2006  Christophe Dumez <chris@qbittorrent.org>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  18  *
  19  * In addition, as a special exception, the copyright holders give permission to
  20  * link this program with the OpenSSL project's "OpenSSL" library (or with
  21  * modified versions of it that use the same license as the "OpenSSL" library),
  22  * and distribute the linked executables. You must obey the GNU General Public
  23  * License in all respects for all of the code used other than "OpenSSL".  If you
  24  * modify file(s), you may extend this exception to your version of the file(s),
  25  * but you are not obligated to do so. If you do not wish to do so, delete this
  26  * exception statement from your version.
  27  */
  28
  29 #include "downloadfromurldialog.h"
  30
  31 #include <QClipboard>
  32 #include <QKeyEvent>
  33 #include <QMessageBox>
  34 #include <QPushButton>
  35 #include <QRegularExpression>
  36 #include <QSet>
  37 #include <QString>
  38 #include <QStringList>
  39 #include <QStringView>
  40
  41 #include "base/net/downloadmanager.h"
  42 #include "ui_downloadfromurldialog.h"
  43 #include "utils.h"
  44
  45 #define SETTINGS_KEY(name) u"DownloadFromURLDialog/" name
  46
  47 namespace
  48 {
  49     bool isDownloadable(const QString &str)
  50     {
  51         return (Net::DownloadManager::hasSupportedScheme(str)
  52             || str.startsWith(u"magnet:", Qt::CaseInsensitive)
  53 #ifdef QBT_USES_LIBTORRENT2
  54             || ((str.size() == 64) && !str.contains(QRegularExpression(u"[^0-9A-Fa-f]"_s))) // v2 hex-encoded SHA-256 info-hash
  55 #endif
  56             || ((str.size() == 40) && !str.contains(QRegularExpression(u"[^0-9A-Fa-f]"_s))) // v1 hex-encoded SHA-1 info-hash
  57             || ((str.size() == 32) && !str.contains(QRegularExpression(u"[^2-7A-Za-z]"_s)))); // v1 Base32 encoded SHA-1 info-hash
  58     }
  59 }
  60
  61 DownloadFromURLDialog::DownloadFromURLDialog(QWidget *parent)
  62     : QDialog(parent)
  63     , m_ui(new Ui::DownloadFromURLDialog)
  64     , m_storeDialogSize(SETTINGS_KEY(u"Size"_s))
  65 {
  66     m_ui->setupUi(this);
  67
  68     m_ui->buttonBox->button(QDialogButtonBox::Ok)->setText(tr("Download"));
  69     connect(m_ui->buttonBox, &QDialogButtonBox::accepted, this, &DownloadFromURLDialog::onSubmit);
  70     connect(m_ui->buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject);
  71
  72     m_ui->textUrls->setWordWrapMode(QTextOption::NoWrap);
  73
  74     // Paste clipboard if there is an URL in it
  75     const QString clipboardText = qApp->clipboard()->text();
  76     const QList<QStringView> clipboardList = QStringView(clipboardText).split(u'\n');
  77
  78     // show urls in the original order as from the clipboard
  79     QStringList urls;
  80     urls.reserve(clipboardList.size());
  81
  82     for (QStringView url : clipboardList)
  83     {
  84         url = url.trimmed();
  85
  86         if (url.isEmpty())
  87             continue;
  88
  89         if (const QString urlString = url.toString(); isDownloadable(urlString))
  90             urls << urlString;
  91     }
  92
  93     if (!urls.isEmpty())
  94     {
  95         m_ui->textUrls->setText(urls.join(u'\n') + u"\n");
  96         m_ui->textUrls->moveCursor(QTextCursor::End);
  97         m_ui->buttonBox->setFocus();
  98     }
  99
 100     if (const QSize dialogSize = m_storeDialogSize; dialogSize.isValid())
 101         resize(dialogSize);
 102 }
 103
 104 DownloadFromURLDialog::~DownloadFromURLDialog()
 105 {
 106     m_storeDialogSize = size();
 107     delete m_ui;
 108 }
 109
 110 void DownloadFromURLDialog::onSubmit()
 111 {
 112     const QString plainText = m_ui->textUrls->toPlainText();
 113     const QList<QStringView> urls = QStringView(plainText).split(u'\n');
 114
 115     // process urls in the original order as from the widget
 116     QSet<QStringView> uniqueURLs;
 117     QStringList urlList;
 118     urlList.reserve(urls.size());
 119
 120     for (QStringView url : urls)
 121     {
 122         url = url.trimmed();
 123
 124         if (url.isEmpty())
 125             continue;
 126
 127         if (!uniqueURLs.contains(url))
 128         {
 129             uniqueURLs.insert(url);
 130             urlList << url.toString();
 131         }
 132     }
 133
 134     if (urlList.isEmpty())
 135     {
 136         QMessageBox::warning(this, tr("No URL entered"), tr("Please type at least one URL."));
 137         return;
 138     }
 139
 140     emit urlsReadyToBeDownloaded(urlList);
 141     accept();
 142 }
 143
 144 void DownloadFromURLDialog::keyPressEvent(QKeyEvent *event)
 145 {
 146     if ((event->modifiers() == Qt::ControlModifier) && (event->key() == Qt::Key_Return))
 147     {
 148         onSubmit();
 149         return;
 150     }
 151
 152     QDialog::keyPressEvent(event);
 153 }