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/* 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 **);
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