dlg_state.h

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/*
 * $Id: dlg_state.h 552 2008-04-17 17:30:10Z vingarzan $
 *  
 * Copyright (C) 2004-2006 FhG Fokus
 *
 * This file is part of Open IMS Core - an open source IMS CSCFs & HSS
 * implementation
 *
 * Open IMS Core 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.
 *
 * For a license to use the Open IMS Core software under conditions
 * other than those described here, or to purchase support for this
 * software, please contact Fraunhofer FOKUS by e-mail at the following
 * addresses:
 *     info@open-ims.org
 *
 * Open IMS Core 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.
 * 
 * It has to be noted that this Open Source IMS Core System is not 
 * intended to become or act as a product in a commercial context! Its 
 * sole purpose is to provide an IMS core reference implementation for 
 * IMS technology testing and IMS application prototyping for research 
 * purposes, typically performed in IMS test-beds.
 * 
 * Users of the Open Source IMS Core System have to be aware that IMS
 * technology may be subject of patents and licence terms, as being 
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 * standards. Thus all Open IMS Core users have to take notice of this 
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 * patents and licences may become applicable to the intended usage 
 * context.  
 *
 * 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
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 */
 
#ifndef S_CSCF_DLG_STATE_H
#define S_CSCF_DLG_STATE_H

#include "../../sr_module.h"
#include "mod.h"
#include "../../locking.h"
#include "../tm/dlg.h"

enum s_dialog_method {
    DLG_METHOD_OTHER=0,
    DLG_METHOD_INVITE=1,
    DLG_METHOD_SUBSCRIBE=2  
};

#define DLG_METHOD_MAX DLG_METHOD_SUBSCRIBE

enum s_dialog_state {
    DLG_STATE_UNKNOWN=0,
    DLG_STATE_INITIAL=1,
    DLG_STATE_EARLY=2,
    DLG_STATE_CONFIRMED=3,
    DLG_STATE_TERMINATED_ONE_SIDE=4,
    DLG_STATE_TERMINATED=5  
};

enum s_dialog_direction {
    DLG_MOBILE_ORIGINATING=0,
    DLG_MOBILE_TERMINATING=1,
    DLG_MOBILE_UNKNOWN=2
};

typedef struct _s_dialog {
    unsigned int hash;                  
    str call_id;                        
    enum s_dialog_direction direction;  
    str aor;                            
    enum s_dialog_method method;        
    str method_str;                     
    int first_cseq;                     
    int last_cseq;                      
    enum s_dialog_state state;          
    time_t expires;                     
    time_t lr_session_expires;          
    str refresher;                      
    unsigned char uac_supp_timer;       
    str event;                          
    unsigned char is_releasing;         
    dlg_t *dialog_c;                    
    dlg_t *dialog_s;                    
    struct _s_dialog *next;             
    struct _s_dialog *prev;             
} s_dialog;

typedef struct {
    s_dialog *head;                     
    s_dialog *tail;                     
    gen_lock_t *lock;                   
} s_dialog_hash_slot;


inline unsigned int get_s_dialog_hash(str call_id);

int s_dialogs_init(int hash_size);

void s_dialogs_destroy();

inline void d_lock(unsigned int hash);
inline void d_unlock(unsigned int hash);


s_dialog* new_s_dialog(str call_id,str aor,enum s_dialog_direction dir);
s_dialog* add_s_dialog(str call_id,str aor,enum s_dialog_direction dir);
int is_s_dialog(str call_id,str aor,enum s_dialog_direction dir);
int is_s_dialog_dir(str call_id,enum s_dialog_direction dir);
s_dialog* get_s_dialog(str call_id,str aor);
s_dialog* get_s_dialog_dir(str call_id,enum s_dialog_direction dir);
s_dialog* get_s_dialog_dir_nolock(str call_id,enum s_dialog_direction dir);
int terminate_s_dialog(s_dialog *d);
void del_s_dialog(s_dialog *d);
void free_s_dialog(s_dialog *d);
void print_s_dialogs(int log_level);
enum s_dialog_direction get_dialog_direction(char *direction);


int S_is_in_dialog(struct sip_msg* msg, char* str1, char* str2);

int S_save_dialog(struct sip_msg* msg, char* str1, char* str2);

int S_update_dialog(struct sip_msg* msg, char* str1, char* str2);

int S_drop_dialog(struct sip_msg* msg, char* str1, char* str2);

int S_drop_all_dialogs(str aor);

int S_record_route(struct sip_msg *msg,char *user,char *str2);

int S_is_record_routed(struct sip_msg *msg,char *str1,char *str2);

void dialog_timer(unsigned int ticks, void* param);

int S_check_session_expires(struct sip_msg* msg, char* str1, char* str2);

int S_422_session_expires(struct sip_msg* msg, char* str1, char* str2);
        
#endif

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