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/* packet-sdp.h
* Routines for SDP packet disassembly (RFC 2327)
*
* Jason Lango <jal@netapp.com>
* Liberally copied from packet-http.c, by Guy Harris <guy@alum.mit.edu>
* 2005 Alejandro Vaquero <alejandro.vaquero@verso.com>, add support for tap
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef __PACKET_SDP_H__
#define __PACKET_SDP_H__
typedef struct _sdp_packet_info {
char summary_str[50]; /* SDP summary string for VoIP calls graph analysis */
} sdp_packet_info;
enum sdp_exchange_type
{
SDP_EXCHANGE_OFFER = 0,
SDP_EXCHANGE_ANSWER_ACCEPT,
SDP_EXCHANGE_ANSWER_REJECT
};
enum sdp_trace_id_hf_type
{
SDP_TRACE_ID_HF_TYPE_STR = 0, /* */
SDP_TRACE_ID_HF_TYPE_UINT32 /* */
};
/*
* Information needed to set up a trace id in RTP(t ex SIP CallId )
*/
#define SDP_INFO_OFFSET 10 /* Max number of SDP data occurrences in a single frame */
typedef struct _sdp_setup_info {
int hf_id; /* Header field to use */
enum sdp_trace_id_hf_type hf_type; /* Indicates which of the following variables to use( add uint32_t etc as needed)*/
bool add_hidden;
bool is_osmux;
union {
char *str; /* The trace id if the hf_type is str */
uint32_t num; /* Numerical trace id */
} trace_id;
} sdp_setup_info_t;
extern void setup_sdp_transport(tvbuff_t *tvb, packet_info *pinfo, enum sdp_exchange_type type, int request_frame, const bool delay, sdp_setup_info_t *setup_info);
/* Handles duplicate OFFER packets so they don't end up processed by dissect_sdp(). This can probably
* be removed when all higher layer dissectors properly handle SDP themselves with setup_sdp_transport()
*/
extern void setup_sdp_transport_resend(int current_frame, int request_frame);
#endif /* __PACKET_SDP_H__ */
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