/*
 *    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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/*
 *    Author : Boris Mikhailenko <stg34@stargazer.dp.ua>
 *    Author : Maxim Mamontov <faust@stargazer.dp.ua>
 */

/*
 $Revision: 1.16 $
 $Date: 2010/09/10 06:43:59 $
 $Author: faust $
*/

#ifndef RSCRIPT_H
#define RSCRIPT_H

#include <pthread.h>

#include <cstring>
#include <string>
#include <map>
#include <functional>
#include <utility>

#include "base_store.h"
#include "os_int.h"
#include "notifer.h"
#include "user_ips.h"
#include "../../../user.h"
#include "../../../users.h"
#include "blowfish.h"
#include "rs_packets.h"
#include "nrmap_parser.h"

extern "C" BASE_PLUGIN * GetPlugin();

#define RS_DEBUG (1)

#define MAX_SHORT_PCKT  (3)

class REMOTE_SCRIPT;
//-----------------------------------------------------------------------------
class RS_ADD_USER_NONIFIER: public NOTIFIER_BASE<user_iter>
{
public:
    RS_ADD_USER_NONIFIER() {};
    virtual ~RS_ADD_USER_NONIFIER() {};

    void SetRemoteScript(REMOTE_SCRIPT * a) { rs = a; }
    void Notify(const user_iter & user);

private:
    REMOTE_SCRIPT * rs;
};
//-----------------------------------------------------------------------------
class RS_DEL_USER_NONIFIER: public NOTIFIER_BASE<user_iter>
{
public:
    RS_DEL_USER_NONIFIER() {};
    virtual ~RS_DEL_USER_NONIFIER() {};

    void SetRemoteScript(REMOTE_SCRIPT * a) { rs = a; }
    void Notify(const user_iter & user);

private:
    REMOTE_SCRIPT * rs;
};
//-----------------------------------------------------------------------------
template <typename varParamType>
class RS_CHG_AFTER_NOTIFIER: public PROPERTY_NOTIFIER_BASE<varParamType>
{
public:
    void        Notify(const varParamType & oldValue, const varParamType & newValue);
    void        SetUser(user_iter u) { user = u; }
    user_iter   GetUser() {return user; }
    void        SetRemoteScript(REMOTE_SCRIPT * a) { rs = a; }

private:
    user_iter   user;
    REMOTE_SCRIPT * rs;
};
//-----------------------------------------------------------------------------
struct RS_USER
{
                      RS_USER();
                      RS_USER(const std::vector<uint32_t> & r, user_iter it);
time_t                lastSentTime;
user_iter             user;
std::vector<uint32_t> routers;
int                   shortPacketsCount;
};
//-----------------------------------------------------------------------------
class RS_SETTINGS
{
public:
                        RS_SETTINGS();
    virtual             ~RS_SETTINGS() {};
    const std::string & GetStrError() const { return errorStr; };
    int                 ParseSettings(const MODULE_SETTINGS & s);
    int                 GetSendPeriod() const { return sendPeriod; };
    int                 GetPort() const { return port; };
    const std::vector<NET_ROUTER> & GetSubnetsMap() const { return netRouters; };
    const std::vector<std::string> & GetUserParams() const { return userParams; };
    const std::string & GetPassword() const { return password; };
    const std::string & GetMapFileName() const { return subnetFile; };

private:
    int                 ParseIntInRange(const std::string & str, int min, int max, int * val);
    int                 sendPeriod;
    uint16_t            port;
    string              errorStr;
    std::vector<NET_ROUTER> netRouters;
    std::vector<string>     userParams;
    string              password;
    string              subnetFile;
};
//-----------------------------------------------------------------------------
class REMOTE_SCRIPT : public BASE_PLUGIN
{
public:
                        REMOTE_SCRIPT();
    virtual             ~REMOTE_SCRIPT();

    void                SetUsers(USERS * u) { users = u; };
    void                SetTariffs(TARIFFS *) {};
    void                SetAdmins(ADMINS *) {};
    void                SetTraffcounter(TRAFFCOUNTER *) {};
    void                SetStore(BASE_STORE *) {};
    void                SetStgSettings(const SETTINGS *) {};
    void                SetSettings(const MODULE_SETTINGS & s) { settings = s; };
    int                 ParseSettings();

    int                 Start();
    int                 Stop();
    int                 Reload();
    bool                IsRunning() { return isRunning; };

    const std::string & GetStrError() const { return errorStr; };
    const std::string   GetVersion() const { return "Remote script v 0.3"; };
    uint16_t            GetStartPosition() const { return 20; };
    uint16_t            GetStopPosition() const { return 20; };

    void                DelUser(user_iter u) { UnSetUserNotifier(u); };
    void                AddUser(user_iter u) { SetUserNotifier(u); };

    void                ChangedIP(user_iter u, uint32_t oldIP, uint32_t newIP);

private:
    static void *       Run(void *);
    bool                PrepareNet();
    bool                FinalizeNet();

    bool                Send(uint32_t ip, RS_USER & rsu, bool forceDisconnect = false) const;
    bool                SendDirect(uint32_t ip, RS_USER & rsu, uint32_t routerIP, bool forceDisconnect = false) const;
    bool                PreparePacket(char * buf, size_t bufSize, uint32_t ip, RS_USER &rsu, bool forceDisconnect = false) const;
    void                PeriodicSend();

    std::vector<uint32_t> IP2Routers(uint32_t ip);
    bool                GetUsers();
    std::string         GetUserParam(user_iter u, const std::string & paramName) const;

    void                SetUserNotifier(user_iter u);
    void                UnSetUserNotifier(user_iter u);

    void                InitEncrypt(BLOWFISH_CTX * ctx, const string & password) const;
    void                Encrypt(BLOWFISH_CTX * ctx, char * dst, const char * src, size_t len8) const;

    mutable BLOWFISH_CTX ctx;

    std::list<RS_CHG_AFTER_NOTIFIER<uint32_t> > AfterChgIPNotifierList;
    std::map<uint32_t, RS_USER> authorizedUsers;

    mutable std::string errorStr;
    RS_SETTINGS         rsSettings;
    MODULE_SETTINGS     settings;
    int                 sendPeriod;
    int                 halfPeriod;

    bool                nonstop;
    bool                isRunning;

    USERS *             users;

    std::vector<NET_ROUTER> netRouters;

    pthread_t           thread;
    pthread_mutex_t     mutex;

    int                 sock;

    RS_ADD_USER_NONIFIER onAddUserNotifier;
    RS_DEL_USER_NONIFIER onDelUserNotifier;

    friend class UpdateRouter;
    friend class DisconnectUser;
};
//-----------------------------------------------------------------------------
class DisconnectUser : public std::unary_function<std::pair<const uint32_t, RS_USER> &, void>
{
    public:
        DisconnectUser(REMOTE_SCRIPT & rs) : rscript(rs) {};
        void operator()(std::pair<const uint32_t, RS_USER> & p)
        {
            rscript.Send(p.first, p.second, true);
        }
    private:
        REMOTE_SCRIPT & rscript;
};
//-----------------------------------------------------------------------------
inline void RS_ADD_USER_NONIFIER::Notify(const user_iter & user)
{
printfd(__FILE__, "ADD_USER_NONIFIER\n");
rs->AddUser(user);
}
//-----------------------------------------------------------------------------
inline void RS_DEL_USER_NONIFIER::Notify(const user_iter & user)
{
printfd(__FILE__, "DEL_USER_NONIFIER\n");
rs->DelUser(user);
}
//-----------------------------------------------------------------------------

#endif