You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
kamailio/modules/tm/t_lookup.h

158 lines
4.6 KiB

/*
* $Id$
*
* Copyright (C) 2001-2003 FhG Fokus
*
* This file is part of ser, a free SIP server.
*
* ser 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 ser software under conditions
* other than those described here, or to purchase support for this
* software, please contact iptel.org by e-mail at the following addresses:
* info@iptel.org
*
* ser 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
*/
/*
* History:
* --------
* 2003-02-24 s/T_NULL/T_NULL_CELL/ to avoid redefinition conflict w/
* nameser_compat.h (andrei)
* 2004-02-11 FIFO/CANCEL + alignments (hash=f(callid,cseq)) (uli+jiri)
* 2005-12-09 added t_set_fr() (andrei)
* 2009-06-24 changed set_t() to take also a branch parameter (andrei)
*/
#ifndef _T_LOOKUP_H
#define _T_LOOKUP_H
#include "defs.h"
#include "config.h"
#include "t_funcs.h"
#define T_UNDEFINED ( (struct cell*) -1 )
#define T_NULL_CELL ( (struct cell*) 0 )
#define T_BR_UNDEFINED (-1)
extern unsigned int global_msg_id;
void init_t(void);
int init_rb( struct retr_buf *rb, struct sip_msg *msg );
typedef struct cell* (*tlookup_original_f)( struct sip_msg* p_msg );
struct cell* t_lookupOriginalT( struct sip_msg* p_msg );
int t_reply_matching( struct sip_msg* , int* );
typedef int (*tlookup_request_f)(struct sip_msg*, int, int*);
int t_lookup_request( struct sip_msg* p_msg, int leave_new_locked,
int* canceled);
int t_newtran( struct sip_msg* p_msg );
int _add_branch_label( struct cell *trans,
char *str, int *len, int branch );
int add_branch_label( struct cell *trans,
struct sip_msg *p_msg, int branch );
/* releases T-context */
int t_unref( struct sip_msg *p_msg);
typedef int (*tunref_f)( struct sip_msg *p_msg);
typedef int (*tcheck_f)(struct sip_msg*, int*);
/* old t_check version (no e2eack support) */
int t_check(struct sip_msg* , int *branch );
/* new version, e2eack and different return convention */
int t_check_msg(struct sip_msg* , int *branch );
typedef struct cell * (*tgett_f)(void);
struct cell *get_t(void);
int get_t_branch(void);
/* use carefully or better not at all -- current transaction is
* primarily set by lookup functions */
void set_t(struct cell *t, int branch);
#define T_GET_TI "t_get_trans_ident"
#define T_LOOKUP_IDENT "t_lookup_ident"
#define T_IS_LOCAL "t_is_local"
typedef int (*tislocal_f)(struct sip_msg*);
typedef int (*tnewtran_f)(struct sip_msg*);
typedef int (*tget_ti_f)(struct sip_msg*, unsigned int*, unsigned int*);
typedef int (*tlookup_ident_f)(struct cell**, unsigned int, unsigned int);
typedef int (*trelease_f)(struct sip_msg*);
typedef int (*tlookup_callid_f)(struct cell **, str, str);
int t_is_local(struct sip_msg*);
int t_get_trans_ident(struct sip_msg* p_msg, unsigned int* hash_index, unsigned int* label);
int t_lookup_ident(struct cell** trans, unsigned int hash_index, unsigned int label);
/* lookup a transaction by callid and cseq */
int t_lookup_callid(struct cell** trans, str callid, str cseq);
int t_set_fr(struct sip_msg* msg, unsigned int fr_inv_to, unsigned int fr_to );
int t_reset_fr(void);
#ifdef TM_DIFF_RT_TIMEOUT
int t_set_retr(struct sip_msg* msg, unsigned int t1_to, unsigned int t2_to);
int t_reset_retr(void);
#endif
int t_set_max_lifetime(struct sip_msg* msg, unsigned int eol_inv,
unsigned int eol_noninv);
int t_reset_max_lifetime(void);
#ifdef WITH_AS_SUPPORT
/**
* Returns the hash coordinates of the transaction current CANCEL is targeting.
*/
int t_get_canceled_ident(struct sip_msg *msg, unsigned int *hash_index,
unsigned int *label);
typedef int (*t_get_canceled_ident_f)(struct sip_msg *msg,
unsigned int *hash_index, unsigned int *label);
#endif /* WITH_AS_SUPPORT */
/**
* required by TMX (K/O extensions)
*/
#define WITH_TM_CTX
#ifdef WITH_TM_CTX
typedef struct _tm_ctx {
int branch_index;
} tm_ctx_t;
typedef tm_ctx_t* (*tm_ctx_get_f)(void);
tm_ctx_t* tm_ctx_get(void);
void tm_ctx_init(void);
void tm_ctx_set_branch_index(int v);
#else
#define tm_ctx_get() NULL
#define tm_ctx_init()
#define tm_ctx_set_branch_index(v)
#endif /* WITH_TM_CTX */
#endif