/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2009-2010 The FreeBSD Foundation
 * Copyright (c) 2011 Pawel Jakub Dawidek <pjd@FreeBSD.org>
 * All rights reserved.
 *
 * This software was developed by Pawel Jakub Dawidek under sponsorship from
 * the FreeBSD Foundation.
 *
 * 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 AUTHORS 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 AUTHORS 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 _PJDLOG_H_
#define _PJDLOG_H_

#include <sys/cdefs.h>

#include <errno.h>
#include <stdarg.h>
#include <sysexits.h>
#include <syslog.h>

#define PJDLOG_MODE_STD         0
#define PJDLOG_MODE_SYSLOG      1
#define PJDLOG_MODE_SOCK        2

void pjdlog_init(int mode);
void pjdlog_fini(void);

void pjdlog_mode_set(int mode);
int pjdlog_mode_get(void);

#ifdef notyet
void pjdlog_sock_set(int sock);
int pjdlog_sock_get(void);
#endif

void pjdlog_debug_set(int level);
int pjdlog_debug_get(void);

void pjdlog_prefix_set(const char *fmt, ...) __printflike(1, 2);
void pjdlogv_prefix_set(const char *fmt, va_list ap) __printflike(1, 0);
const char *pjdlog_prefix_get(void);
void pjdlog_prefix_push(const char *fmt, ...) __printflike(1, 2);
void pjdlogv_prefix_push(const char *fmt, va_list ap) __printflike(1, 0);
void pjdlog_prefix_pop(void);

void _pjdlogv_common(const char *func, const char *file, int line, int loglevel,
    int debuglevel, int error, const char *fmt, va_list ap) __printflike(7, 0);
void _pjdlog_common(const char *func, const char *file, int line, int loglevel,
    int debuglevel, int error, const char *fmt, ...) __printflike(7, 8);

void _pjdlogv_exit(const char *func, const char *file, int line, int exitcode,
    int error, const char *fmt, va_list ap) __printflike(6, 0) __dead2;
void _pjdlog_exit(const char *func, const char *file, int line, int exitcode,
    int error, const char *fmt, ...) __printflike(6, 7) __dead2;

void _pjdlog_abort(const char *func, const char *file, int line, int error,
    const char *failedexpr, const char *fmt, ...) __printflike(6, 7) __dead2;

#ifdef notyet
int pjdlog_receive(int sock);
#endif

#define pjdlogv_common(loglevel, debuglevel, error, fmt, ap)            \
        _pjdlogv_common(__func__, __FILE__, __LINE__, (loglevel),       \
            (debuglevel), (error), (fmt), (ap))
#define pjdlog_common(loglevel, debuglevel, error, ...)                 \
        _pjdlog_common(__func__, __FILE__, __LINE__, (loglevel),        \
            (debuglevel), (error), __VA_ARGS__)

#define pjdlogv(loglevel, fmt, ap)                                      \
        pjdlogv_common((loglevel), 0, -1, (fmt), (ap))
#define pjdlog(loglevel, ...)                                           \
        pjdlog_common((loglevel), 0, -1, __VA_ARGS__)

#define pjdlogv_emergency(fmt, ap)      pjdlogv(LOG_EMERG, (fmt), (ap))
#define pjdlog_emergency(...)           pjdlog(LOG_EMERG, __VA_ARGS__)
#define pjdlogv_alert(fmt, ap)          pjdlogv(LOG_ALERT, (fmt), (ap))
#define pjdlog_alert(...)               pjdlog(LOG_ALERT, __VA_ARGS__)
#define pjdlogv_critical(fmt, ap)       pjdlogv(LOG_CRIT, (fmt), (ap))
#define pjdlog_critical(...)            pjdlog(LOG_CRIT, __VA_ARGS__)
#define pjdlogv_error(fmt, ap)          pjdlogv(LOG_ERR, (fmt), (ap))
#define pjdlog_error(...)               pjdlog(LOG_ERR, __VA_ARGS__)
#define pjdlogv_warning(fmt, ap)        pjdlogv(LOG_WARNING, (fmt), (ap))
#define pjdlog_warning(...)             pjdlog(LOG_WARNING, __VA_ARGS__)
#define pjdlogv_notice(fmt, ap)         pjdlogv(LOG_NOTICE, (fmt), (ap))
#define pjdlog_notice(...)              pjdlog(LOG_NOTICE, __VA_ARGS__)
#define pjdlogv_info(fmt, ap)           pjdlogv(LOG_INFO, (fmt), (ap))
#define pjdlog_info(...)                pjdlog(LOG_INFO, __VA_ARGS__)

#define pjdlog_debug(debuglevel, ...)                                   \
        pjdlog_common(LOG_DEBUG, (debuglevel), -1, __VA_ARGS__)
#define pjdlogv_debug(debuglevel, fmt, ap)                              \
        pjdlogv_common(LOG_DEBUG, (debuglevel), -1, (fmt), (ap))

#define pjdlog_errno(loglevel, ...)                                     \
        pjdlog_common((loglevel), 0, (errno), __VA_ARGS__)
#define pjdlogv_errno(loglevel, fmt, ap)                                \
        pjdlogv_common((loglevel), 0, (errno), (fmt), (ap))

#define pjdlogv_exit(exitcode, fmt, ap)                                 \
        _pjdlogv_exit(__func__, __FILE__, __LINE__, (exitcode),         \
            (errno), (fmt), (ap))
#define pjdlog_exit(exitcode, ...)                                      \
        _pjdlog_exit(__func__, __FILE__, __LINE__, (exitcode), (errno), \
            __VA_ARGS__)

#define pjdlogv_exitx(exitcode, fmt, ap)                                \
        _pjdlogv_exit(__func__, __FILE__, __LINE__, (exitcode), -1,     \
            (fmt), (ap))
#define pjdlog_exitx(exitcode, ...)                                     \
        _pjdlog_exit(__func__, __FILE__, __LINE__, (exitcode), -1,      \
            __VA_ARGS__)

#define PJDLOG_VERIFY(expr)     do {                                    \
        if (!(expr)) {                                                  \
                _pjdlog_abort(__func__, __FILE__, __LINE__, -1, #expr,  \
                    __func__);                                          \
        }                                                               \
} while (0)
#define PJDLOG_RVERIFY(expr, ...)       do {                            \
        if (!(expr)) {                                                  \
                _pjdlog_abort(__func__, __FILE__, __LINE__, -1, #expr,  \
                    __VA_ARGS__);                                       \
        }                                                               \
} while (0)
#define PJDLOG_EVERIFY(expr)            do {                            \
        if (!(expr)) {                                                  \
                _pjdlog_abort(__func__, __FILE__, __LINE__, errno,      \
                    #expr, __func__);                                   \
        }                                                               \
} while (0)
#define PJDLOG_ABORT(...)       _pjdlog_abort(__func__, __FILE__,       \
                                    __LINE__, -1, NULL, __VA_ARGS__)
#ifdef NDEBUG
#define PJDLOG_ASSERT(expr)     do { } while (0)
#define PJDLOG_RASSERT(...)     do { } while (0)
#else
#define PJDLOG_ASSERT(expr)     do {                                    \
        if (!(expr)) {                                                  \
                _pjdlog_abort(__func__, __FILE__, __LINE__, -1, #expr,  \
                    __func__);                                          \
        }                                                               \
} while (0)
#define PJDLOG_RASSERT(expr, ...)       do {                            \
        if (!(expr)) {                                                  \
                _pjdlog_abort(__func__, __FILE__, __LINE__, -1, #expr,  \
                    __VA_ARGS__);                                       \
        }                                                               \
} while (0)
#endif

#endif  /* !_PJDLOG_H_ */