/* trace.h   Definitions for omapi tracing facility... *//* * Copyright (c) 2004,2005,2007 by Internet Systems Consortium, Inc. ("ISC") * Copyright (c) 2001-2003 by Internet Software Consortium * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * *   Internet Systems Consortium, Inc. *   950 Charter Street *   Redwood City, CA 94063 *   <info@isc.org> *   http://www.isc.org/ * * This software has been written for Internet Systems Consortium * by Ted Lemon, as part of a project for Nominum, Inc.   To learn more * about Internet Systems Consortium, see http://www.isc.org/.  To * learn more about Nominum, Inc., see ``http://www.nominum.com''. */#define TRACEFILE_MAGIC		0x64484370UL	/* dHCp */#define TRACEFILE_VERSION	1/* The first thing in a trace file is the header, which basically just    defines the version of the file. */typedef struct {	u_int32_t magic;	/* Magic number for trace file. */	u_int32_t version;	/* Version of file. */	int32_t hlen;		/* Length of this header. */	int32_t phlen;		/* Length of packet headers. */} tracefile_header_t;/* The trace file is composed of a bunch of trace packets.   Each such packet   has a type, followed by a length, followed by a timestamp, followed by   the actual contents of the packet.   The type indexes are not fixed -   they are allocated either on readback or when writing a trace file.   One index type is reserved - type zero means that this record is a type   name to index mapping. */typedef struct {	u_int32_t type_index;	/* Index to the type of handler that this				   packet needs. */	u_int32_t length;	/* Length of the packet.  This includes				   everything except the fixed header. */	u_int32_t when;		/* When the packet was written. */	u_int32_t pad;		/* Round this out to a quad boundary. */} tracepacket_t;#define TRACE_INDEX_MAPPING_SIZE 4	/* trace_index_mapping_t less name. */typedef struct {	u_int32_t index;	char name [1];} trace_index_mapping_t;struct trace_type; /* forward */typedef struct trace_type trace_type_t;struct trace_type {	trace_type_t *next;	int index;	char *name;	void *baggage;	void (*have_packet) (trace_type_t *, unsigned, char *);	void (*stop_tracing) (trace_type_t *);};typedef struct trace_iov {	const char *buf;	unsigned len;} trace_iov_t;typedef struct {	u_int16_t addrtype;	u_int16_t addrlen;	u_int8_t address [16];	u_int16_t port;} trace_addr_t;void trace_free_all (void);int trace_playback (void);int trace_record (void);isc_result_t trace_init(void (*set_time)(time_t), const char *, int);isc_result_t trace_begin (const char *, const char *, int);isc_result_t trace_write_packet (trace_type_t *, unsigned, const char *,				 const char *, int);isc_result_t trace_write_packet_iov (trace_type_t *, int, trace_iov_t *,				     const char *, int);void trace_type_stash (trace_type_t *);trace_type_t *trace_type_register (const char *, void *,				   void (*) (trace_type_t *,					     unsigned, char *),				   void (*) (trace_type_t *),				   const char *, int);void trace_stop (void);void trace_index_map_input (trace_type_t *, unsigned, char *);void trace_index_stop_tracing (trace_type_t *);void trace_replay_init (void);void trace_file_replay (const char *);isc_result_t trace_get_next_packet (trace_type_t **, tracepacket_t *,				    char **, unsigned *, unsigned *);isc_result_t trace_get_file (trace_type_t *,			     const char *, unsigned *, char **);isc_result_t trace_get_packet (trace_type_t **, unsigned *, char **);time_t trace_snoop_time (trace_type_t **);