logbuf.h

/*-
 * SSLsplit - transparent SSL/TLS interception
 * https://www.roe.ch/SSLsplit
 *
 * Copyright (c) 2009-2019, Daniel Roethlisberger <daniel@roe.ch>.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef LOGBUF_H
#define LOGBUF_H

#include "attrib.h"

#include <stdlib.h>
#include <unistd.h>

typedef struct logbuf {
	unsigned char *buf;
	ssize_t sz;
	void *fh;
	unsigned long ctl;
	struct logbuf *next;
} logbuf_t;

typedef ssize_t (*writefunc_t)(void *, unsigned long, const void *, size_t);

logbuf_t * logbuf_new(void *, size_t, logbuf_t *) MALLOC;
logbuf_t * logbuf_new_alloc(size_t, logbuf_t *) MALLOC;
logbuf_t * logbuf_new_copy(const void *, size_t, logbuf_t *) MALLOC;
logbuf_t * logbuf_new_printf(logbuf_t *, const char *, ...) MALLOC PRINTF(2,3);
logbuf_t * logbuf_new_deepcopy(logbuf_t *, int) MALLOC;
logbuf_t * logbuf_make_contiguous(logbuf_t *) WUNRES;
ssize_t logbuf_size(logbuf_t *) NONNULL(1) WUNRES;
ssize_t logbuf_write_free(logbuf_t *, writefunc_t) NONNULL(1);
void logbuf_free(logbuf_t *) NONNULL(1);

#define logbuf_ctl_clear(x) (x)->ctl = 0
#define logbuf_ctl_set(x, y) (x)->ctl |= (y)
#define logbuf_ctl_unset(x, y) (x)->ctl &= ~(y)
#define logbuf_ctl_isset(x, y) (!!((x)->ctl & (y)))

#define LBFLAG_REOPEN   (1 << 0)        /* logger */
#define LBFLAG_OPEN     (1 << 1)        /* logger */
#define LBFLAG_CLOSE    (1 << 2)        /* logger */
#define LBFLAG_IS_REQ   (1 << 3)        /* pcap/mirror content log */
#define LBFLAG_IS_RESP  (1 << 4)        /* pcap/mirror content log */

#endif /* !LOGBUF_H */

/* vim: set noet ft=c: */