1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#ifndef	_SIP_DIALOG_H
28#define	_SIP_DIALOG_H
29
30#pragma ident	"%Z%%M%	%I%	%E% SMI"
31
32#ifdef	__cplusplus
33extern "C" {
34#endif
35
36#include <pthread.h>
37#include <sip.h>
38#include <sys/types.h>
39
40#include "sip_msg.h"
41#include "sip_miscdefs.h"
42
43/*
44 * Dialogs are linked in their own list.
45 */
46
47
48/* This is always done within sip_dlg_mutex */
49#define	SIP_DLG_REFCNT_INCR(dialog)					\
50	(dialog)->sip_dlg_ref_cnt++;
51
52#define	SIP_DLG_REFCNT_DECR(dialog)	 {				\
53	(void) pthread_mutex_lock(&((dialog)->sip_dlg_mutex));		\
54	assert((dialog)->sip_dlg_ref_cnt > 0);				\
55	(dialog)->sip_dlg_ref_cnt--;					\
56	if ((dialog)->sip_dlg_ref_cnt == 0 &&				\
57	    (dialog)->sip_dlg_state == SIP_DLG_DESTROYED) {		\
58		(void) pthread_mutex_unlock(&((dialog)->sip_dlg_mutex)); \
59		sip_dialog_delete(dialog);				\
60	} else {							\
61		(void) pthread_mutex_unlock(&((dialog)->sip_dlg_mutex));\
62	}								\
63}
64
65/* The dialog structure */
66typedef struct sip_dialog
67{
68	_sip_header_t		*sip_dlg_remote_uri_tag;
69	_sip_header_t		*sip_dlg_local_uri_tag;
70	_sip_header_t		*sip_dlg_remote_target;
71	_sip_header_t		*sip_dlg_local_contact;
72	_sip_header_t		*sip_dlg_new_local_contact; /* for re-INVITE */
73	_sip_header_t		*sip_dlg_route_set;
74	_sip_header_t		*sip_dlg_event;
75	sip_str_t		sip_dlg_rset;
76	sip_str_t		sip_dlg_req_uri;
77	_sip_header_t		*sip_dlg_call_id;
78	uint32_t		sip_dlg_local_cseq;
79	uint32_t		sip_dlg_remote_cseq;
80	uint16_t		sip_dlg_id[8];
81	boolean_t		sip_dlg_secure;
82	dialog_state_t		sip_dlg_state;
83	int			sip_dlg_type;	/* CALLEE or CALLER */
84	pthread_mutex_t		sip_dlg_mutex;
85	uint32_t		sip_dlg_ref_cnt;
86	sip_timer_t		sip_dlg_timer;	/* to delete partial dialogs */
87	boolean_t		sip_dlg_on_fork;
88	sip_method_t		sip_dlg_method;
89	void			*sip_dlg_ctxt;	/* currently unused */
90	int			sip_dlg_msgcnt;
91	sip_log_t		sip_dlg_log[SIP_DLG_DESTROYED + 1];
92} _sip_dialog_t;
93
94void			sip_dialog_init(void (*sip_ulp_dlg_del)(sip_dialog_t,
95			    sip_msg_t, void *),
96			    void (*ulp_dlg_state)(sip_dialog_t, sip_msg_t,
97			    int, int));
98sip_dialog_t		sip_dialog_create(_sip_msg_t *, _sip_msg_t *, int);
99sip_dialog_t		sip_dialog_find(_sip_msg_t *);
100int			sip_dialog_process(_sip_msg_t *, sip_dialog_t *);
101sip_dialog_t		sip_update_dialog(sip_dialog_t, _sip_msg_t *);
102void			sip_dialog_add_new_contact(sip_dialog_t, _sip_msg_t *);
103void			sip_dialog_terminate(sip_dialog_t, sip_msg_t);
104sip_dialog_t		sip_seed_dialog(sip_conn_object_t, _sip_msg_t *,
105			    boolean_t, int);
106char			*sip_dialog_req_uri(sip_dialog_t);
107void			sip_dialog_delete(_sip_dialog_t *);
108extern char		*sip_get_dialog_state_str(int);
109extern boolean_t	sip_incomplete_dialog(sip_dialog_t);
110
111#ifdef	__cplusplus
112}
113#endif
114
115#endif	/* _SIP_DIALOG_H */
116