src/kpac/downloader.cpp

0001 /*
0002     SPDX-FileCopyrightText: 2003 Malte Starostik <malte@kde.org>
0003
0004     SPDX-License-Identifier: LGPL-2.0-or-later
0005 */
0006
0007 #include "downloader.h"
0008 #include <kio/transferjob.h>
0009
0010 #include <cstdlib>
0011 #include <cstring>
0012
0013 #include <QTextCodec>
0014
0015 #include <KLocalizedString>
0016
0017 namespace KPAC
0018 {
0019 Downloader::Downloader(QObject *parent)
0020     : QObject(parent)
0021 {
0022 }
0023
0024 void Downloader::download(const QUrl &url)
0025 {
0026     m_data.resize(0);
0027     m_script.clear();
0028     m_scriptURL = url;
0029
0030     KIO::TransferJob *job = KIO::get(url, KIO::NoReload, KIO::HideProgressInfo);
0031     connect(job, &KIO::TransferJob::data, this, &Downloader::data);
0032     connect(job, &KIO::TransferJob::redirection, this, &Downloader::redirection);
0033     connect(job, &KJob::result, this, qOverload<KJob *>(&Downloader::result));
0034 }
0035
0036 void Downloader::failed()
0037 {
0038     Q_EMIT result(false);
0039 }
0040
0041 void Downloader::setError(const QString &error)
0042 {
0043     m_error = error;
0044 }
0045
0046 void Downloader::redirection(KIO::Job *, const QUrl &url)
0047 {
0048     m_scriptURL = url;
0049 }
0050
0051 void Downloader::data(KIO::Job *, const QByteArray &data)
0052 {
0053     unsigned offset = m_data.size();
0054     m_data.resize(offset + data.size());
0055     std::memcpy(m_data.data() + offset, data.data(), data.size());
0056 }
0057
0058 static bool hasErrorPage(KJob *job)
0059 {
0060     KIO::TransferJob *tJob = qobject_cast<KIO::TransferJob *>(job);
0061     return (tJob && tJob->isErrorPage());
0062 }
0063
0064 void Downloader::result(KJob *job)
0065 {
0066     if (!job->error() && !hasErrorPage(job)) {
0067         const QString charset = static_cast<KIO::Job *>(job)->queryMetaData(QStringLiteral("charset"));
0068         QTextCodec *codec = QTextCodec::codecForName(charset.toLatin1());
0069         if (!codec) {
0070             codec = QTextCodec::codecForUtfText(m_data);
0071             Q_ASSERT(codec);
0072         }
0073         m_script = codec->toUnicode(m_data);
0074         Q_EMIT result(true);
0075     } else {
0076         if (job->error()) {
0077             setError(i18n("Could not download the proxy configuration script:\n%1", job->errorString()));
0078         } else {
0079             setError(i18n("Could not download the proxy configuration script")); // error page
0080         }
0081         failed();
0082     }
0083 }
0084 }
0085
0086 #include "moc_downloader.cpp"