cache.h

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// Copyright (C) 2006-2014 David Sugar, Tycho Softworks.
// Copyright (C) 2015 Cherokees of Idaho.
//
// 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 3 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, see <http://www.gnu.org/licenses/>.

#ifndef _SIPWITCH_CACHE_H_
#define _SIPWITCH_CACHE_H_

#ifndef _UCOMMON_STRING_H_
#include <ucommon/string.h>
#endif

#ifndef _UCOMMON_PLATFORM_H_
#include <ucommon/platform.h>
#endif

#ifndef _UCOMMON_SOCKET_H_
#include <ucommon/socket.h>
#endif

#ifndef __SIPWITCH_NAMESPACE_H_
#include <sipwitch/namespace.h>
#endif

#ifndef __SIPWITCH_MAPPED_H_
#include <sipwitch/mapped.h>
#endif

namespace sipwitch {

class __EXPORT Cache : public LinkedObject
{
protected:
    Cache();

    static void expire(LinkedObject **list, LinkedObject **free);

public:
    time_t created;
    time_t expires;
};

class __EXPORT cache : private Cache
{
public:
    static void init(void);
    static void cleanup(void);
    static void userdump(void);
};

class __EXPORT UserCache : public Cache
{
private:
    void release(void);

protected:
    UserCache();

    static UserCache *request(const char *id);

public:
    char userid[32];
    struct sockaddr_internet address;

    inline void set(struct sockaddr *addr)
        {memcpy(&address, addr, sizeof(address));}

    static void add(const char *id, struct sockaddr *addr, time_t create, unsigned expire = 130);

    static UserCache *find(const char *id);

    static void release(UserCache *entry);
};

} // namespace sipwitch

#endif