mirror of https://github.com/aria2/aria2
103 lines
3.6 KiB
C++
103 lines
3.6 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - The high speed download utility
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*
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* Copyright (C) 2012 Tatsuhiro Tsujikawa
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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,
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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. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* including the two.
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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*/
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/* copyright --> */
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#ifndef D_EXTENSION_MESSAGE_REGISTRY_H
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#define D_EXTENSION_MESSAGE_REGISTRY_H
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#include "common.h"
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#include <vector>
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namespace aria2 {
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typedef std::vector<int> Extensions;
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// This class stores mapping between BitTorrent extension name and its
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// ID. The BitTorrent Extension Protocol is specified in BEP10. This
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// class is defined to only stores extensions aria2 supports. See
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// InterestingExtension for supported extensions.
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//
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// See also http://bittorrent.org/beps/bep_0010.html
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class ExtensionMessageRegistry {
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public:
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enum InterestingExtension {
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UT_METADATA,
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UT_PEX,
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// The number of extensions.
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MAX_EXTENSION
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};
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ExtensionMessageRegistry();
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~ExtensionMessageRegistry();
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const Extensions& getExtensions() const { return extensions_; }
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void setExtensions(const Extensions& extensions);
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// Returns message ID corresponding the given |key|. The |key| must
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// be one of InterestingExtension other than MAX_EXTENSION. If
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// message ID is not defined, returns 0.
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uint8_t getExtensionMessageID(int key) const;
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// Returns extension name corresponding to the given |id|. If no
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// extension is defined for the given |id|, returns NULL.
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const char* getExtensionName(uint8_t id) const;
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// Sets association of the |key| and |id|. The |key| must be one of
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// InterestingExtension other than MAX_EXTENSION.
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void setExtensionMessageID(int key, uint8_t id);
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// Removes association of the |key|. The |key| must be one of
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// InterestingExtension other than MAX_EXTENSION. After this call,
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// getExtensionMessageID(key) returns 0.
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void removeExtension(int key);
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private:
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Extensions extensions_;
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};
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// Returns the extension name corresponding to the given |key|. The
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// |key| must be one of InterestingExtension other than MAX_EXTENSION.
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const char* strBtExtension(int key);
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// Returns extension key corresponding to the given extension |name|.
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// If no such key exists, returns
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// ExtensionMessageRegistry::MAX_EXTENSION.
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int keyBtExtension(const char* name);
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} // namespace aria2
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#endif // D_EXTENSION_MESSAGE_REGISTRY_H
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