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/* packet-tls.h
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef __PACKET_TLS_H__
#define __PACKET_TLS_H__
#include "ws_symbol_export.h"
#include <epan/packet.h>
struct tlsinfo {
guint32 seq; /* The sequence number within the TLS stream. */
gboolean is_reassembled;
gboolean end_of_stream; /* TCP FIN, close_notify, etc. */
/* The app handle for the session, set by heuristic dissectors
* to be called in the future. */
dissector_handle_t *app_handle;
};
/** Maps Session-ID to pre-master secrets. */
WS_DLL_PUBLIC GHashTable *ssl_session_hash;
/** Maps Client Random to pre-master secrets. */
WS_DLL_PUBLIC GHashTable *ssl_crandom_hash;
WS_DLL_PUBLIC void ssl_dissector_add(guint port, dissector_handle_t handle);
WS_DLL_PUBLIC void ssl_dissector_delete(guint port, dissector_handle_t handle);
WS_DLL_PUBLIC void ssl_set_master_secret(guint32 frame_num, address *addr_srv, address *addr_cli,
port_type ptype, guint32 port_srv, guint32 port_cli,
guint32 version, gint cipher, const guchar *_master_secret,
const guchar *_client_random, const guchar *_server_random,
guint32 client_seq, guint32 server_seq);
/**
* Retrieves Libgcrypt identifiers for the current TLS cipher. Only valid after
* the Server Hello has been processed and if the current conversation has TLS.
* Alternatively, this conversation lookup can be skipped if the current cipher
* ('cipher_suite') is provided (non-zero).
*/
extern gboolean
tls_get_cipher_info(packet_info *pinfo, guint16 cipher_suite, int *cipher_algo, int *cipher_mode, int *hash_algo);
/**
* Computes the TLS 1.3 "TLS-Exporter(label, context_value, key_length)" value.
* On success, the secret is in "out" (free with "wmem_free(NULL, out)").
*/
gboolean
tls13_exporter(packet_info *pinfo, gboolean is_early,
const char *label, guint8 *context,
guint context_length, guint key_length, guchar **out);
gint
tls13_get_quic_secret(packet_info *pinfo, gboolean is_from_server, int type, guint secret_min_len, guint secret_max_len, guint8 *secret_out);
/**
* Returns the application-layer protocol name (ALPN) for the current TLS
* session, or NULL if unavailable.
*/
const char *
tls_get_alpn(packet_info *pinfo);
#endif /* __PACKET_TLS_H__ */
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