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68 lines
2.2 KiB
C++
68 lines
2.2 KiB
C++
/*
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Copyright (C) 2014 by Project Tox <https://tox.im>
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This file is part of qTox, a Qt-based graphical interface for Tox.
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This program is libre 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 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the COPYING file for more details.
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*/
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#ifndef QTOXDNS_H
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#define QTOXDNS_H
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#include "src/corestructs.h"
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#include <QDnsLookup>
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#include <QObject>
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/// Tox1 is not encrypted, it's unsafe
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#define TOX1_SILENT_FALLBACK 0
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/// That said if the user insists ...
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#define TOX1_ASK_FALLBACK 1
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/// Handles tox1 and tox3 DNS queries
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class ToxDNS : public QObject
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{
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Q_OBJECT
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public:
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struct tox3_server ///< Represents a tox3 server
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{
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tox3_server()=default;
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tox3_server(const char* _name, uint8_t _pk[32]):name{_name},pubkey{_pk}{}
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const char* name; ///< Hostname of the server, e.g. toxme.se
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uint8_t* pubkey; ///< Public key of the tox3 server, usually 256bit long
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};
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public:
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/// Tries to map a text string to a ToxID struct, will query Tox DNS records if necessary
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static ToxID resolveToxAddress(const QString& address, bool silent=true);
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static QString queryTox1(const QString& record, bool silent=true); ///< Record should look like user@domain.tld. Do *NOT* use tox1 without a good reason, it's unsafe.
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static QString queryTox3(const tox3_server& server, const QString& record, bool silent=true); ///< Record should look like user@domain.tld, will *NOT* fallback on queryTox1 anymore
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protected:
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static void showWarning(const QString& message);
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ToxDNS()=default;
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private:
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/// Try to fetch the first entry of the given TXT record
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/// Returns an empty object on failure. May block for up to ~3s
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/// May display message boxes on error if silent if false
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static QByteArray fetchLastTextRecord(const QString& record, bool silent=true);
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public:
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static const tox3_server pinnedServers[2];
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};
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#endif // QTOXDNS_H
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