mirror of
https://github.com/nextcloud/desktop.git
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117 lines
3.5 KiB
C++
117 lines
3.5 KiB
C++
/*
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* Copyright (C) 2015 by Christian Kamm <kamm@incasoftware.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#pragma once
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#include "owncloudgui.h"
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#include <QObject>
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#include <QString>
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#include <QNetworkProxy>
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#include <QAuthenticator>
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#include <QPointer>
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#include <QScopedPointer>
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#include <QSettings>
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#include <QSet>
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namespace QKeychain {
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class Job;
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class ReadPasswordJob;
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}
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namespace OCC {
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class ConfigFile;
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class ProxyAuthDialog;
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/**
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* @brief Handle proxyAuthenticationRequired signals from our QNetworkAccessManagers.
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*
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* The main complication here is that the slot needs to return credential information
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* synchronously - but running a dialog or getting password data from synchronous
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* storage are asynchronous operations. This leads to reentrant calls that are
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* fairly complicated to handle.
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*/
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class ProxyAuthHandler : public QObject
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{
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Q_OBJECT
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public:
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static ProxyAuthHandler *instance();
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~ProxyAuthHandler() override;
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public slots:
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/// Intended for QNetworkAccessManager::proxyAuthenticationRequired()
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void handleProxyAuthenticationRequired(const QNetworkProxy &proxy,
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QAuthenticator *authenticator);
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private slots:
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void slotSenderDestroyed(QObject *);
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private:
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ProxyAuthHandler();
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/// Runs the ProxyAuthDialog and returns true if new credentials were entered.
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bool getCredsFromDialog();
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/// Checks the keychain for credentials of the current proxy.
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bool getCredsFromKeychain();
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/// Stores the current credentials in the keychain.
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void storeCredsInKeychain();
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template<class T, typename PointerToMemberFunction>
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void execAwait(const T *sender,
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PointerToMemberFunction signal,
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int &counter,
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const QEventLoop::ProcessEventsFlags flags = QEventLoop::AllEvents);
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QString keychainUsernameKey() const;
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QString keychainPasswordKey() const;
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/// The hostname:port of the current proxy, used for detecting switches
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/// to a different proxy.
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QString _proxy;
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QString _username;
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QString _password;
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/// If the user cancels the credential dialog, blocked will be set to
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/// true and we won't bother him again.
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bool _blocked = false;
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/// In several instances handleProxyAuthenticationRequired() can be called
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/// while it is still running. These counters detect what we're currently
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/// waiting for.
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int _waitingForDialog = 0;
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int _waitingForKeychain = 0;
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QPointer<ProxyAuthDialog> _dialog;
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/// The QSettings instance to securely store username/password in the keychain.
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QScopedPointer<QSettings> _settings;
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/// Pointer to the most-recently-run ReadPasswordJob, needed due to reentrancy.
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QScopedPointer<QKeychain::ReadPasswordJob> _readPasswordJob;
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/// For checking the proxy config settings.
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QScopedPointer<ConfigFile> _configFile;
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/// To distinguish between a new QNAM asking for credentials and credentials
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/// failing for an existing QNAM, we keep track of the senders of the
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/// proxyAuthRequired signal here.
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QSet<QObject *> _gaveCredentialsTo;
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};
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} // namespace OCC
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