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/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2012 Tatsuhiro Tsujikawa
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/* copyright --> */
#ifndef D_EXTENSION_MESSAGE_REGISTRY_H
#define D_EXTENSION_MESSAGE_REGISTRY_H
#include "common.h"
#include <vector>
namespace aria2 {
typedef std::vector<int> Extensions;
// This class stores mapping between BitTorrent entension name and its
// ID. The BitTorrent Extension Protocol is specified in BEP10. This
// class is defined to only stores extensions aria2 supports. See
// InterestingExtension for supported extensions.
//
// See also http://bittorrent.org/beps/bep_0010.html
class ExtensionMessageRegistry {
public:
enum InterestingExtension {
UT_METADATA,
UT_PEX,
// The number of extensions.
MAX_EXTENSION
};
ExtensionMessageRegistry();
~ExtensionMessageRegistry();
const Extensions& getExtensions() const
{
return extensions_;
}
void setExtensions(const Extensions& extensions);
// Returns message ID corresponding the given |key|. The |key| must
// be one of InterestingExtension other than MAX_EXTENSION. If
// message ID is not defined, returns 0.
uint8_t getExtensionMessageID(int key) const;
// Returns extension name corresponding to the given |id|. If no
// extension is defined for the given |id|, returns NULL.
const char* getExtensionName(uint8_t id) const;
// Sets association of the |key| and |id|. The |key| must be one of
// InterestingExtension other than MAX_EXTENSION.
void setExtensionMessageID(int key, uint8_t id);
// Removes association of the |key|. The |key| must be one of
// InterestingExtension other than MAX_EXTENSION. After this call,
// getExtensionMessageID(key) returns 0.
void removeExtension(int key);
private:
Extensions extensions_;
};
// Returns the extension name corresponding to the given |key|. The
// |key| must be one of InterestingExtension other than MAX_EXTENSION.
const char* strBtExtension(int key);
// Returns extension key corresponding to the given extension |name|.
// If no such key exists, returns
// ExtensionMessageRegistry::MAX_EXTENSION.
int keyBtExtension(const char* name);
} // namespace aria2
#endif // D_EXTENSION_MESSAGE_REGISTRY_H
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