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/*
* log.h
* potd is licensed under the BSD license:
*
* Copyright (c) 2018 Toni Uhlig <matzeton@googlemail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - 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.
*
* - The names of its contributors may not be used to endorse or promote
* products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 OWNER 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 POTD_LOG_H
#define POTD_LOG_H 1
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#define LOGMSG_MAXLEN BUFSIZ
#define LOG_SET_FUNCS(open_cb, close_cb, fmt_cb, fmtex_cb, fmtexerr_cb) \
{ \
log_open = open_cb; log_close = close_cb; \
log_fmt = fmt_cb; log_fmtex = fmtex_cb; \
log_fmtexerr = fmtexerr_cb; \
}
#define LOG_SET_FUNCS_VA(...) LOG_SET_FUNCS(__VA_ARGS__)
#define D(fmt, ...) log_fmt(LP_DEBUG, fmt, __VA_ARGS__)
#define N(fmt, ...) log_fmt(NOTICE, fmt, __VA_ARGS__)
#define W(fmt, ...) log_fmt(WARNING, fmt, __VA_ARGS__)
#define E(fmt, ...) log_fmt(ERROR, fmt, __VA_ARGS__)
#define D2(fmt, ...) log_fmtex(LP_DEBUG, __FILE__, __LINE__, fmt, __VA_ARGS__)
#define N2(fmt, ...) log_fmtex(NOTICE, __FILE__, __LINE__, fmt, __VA_ARGS__)
#define W2(fmt, ...) log_fmtex(WARNING, __FILE__, __LINE__, fmt, __VA_ARGS__)
#define E2(fmt, ...) log_fmtex(ERROR, __FILE__, __LINE__, fmt, __VA_ARGS__)
#define W_STRERR(fmt, ...) log_fmtexerr(WARNING, __FILE__, __LINE__, fmt, \
__VA_ARGS__)
#define E_STRERR(fmt, ...) log_fmtexerr(ERROR, __FILE__, __LINE__, fmt, \
__VA_ARGS__)
#define E_GAIERR(ret, msg) { if (ret) { E2("%s failed: %s", msg, gai_strerror(ret)); } }
#define FATAL(fmt, ...) { E_STRERR(fmt, __VA_ARGS__); abort(); }
#define ABORT_ON_FATAL(expr, msg) \
{ errno = 0; long rv = (long) expr; \
if (rv) { \
/* \
E_STRERR("`%s` returned %ld. %s", \
#expr, rv, msg); abort(); \
*/ \
E_STRERR("%s", msg); \
kill(0, SIGABRT); \
abort(); \
} \
}
#define C(fmt, ...) log_fmt(CMD, fmt, __VA_ARGS__)
#define P(fmt, ...) log_fmt(PROTOCOL, fmt, __VA_ARGS__)
typedef enum log_priority {
LP_DEBUG = 0, PROTOCOL, NOTICE, WARNING, ERROR, CMD
} log_priority;
typedef int (*log_open_cb) (void);
typedef void (*log_close_cb) (void);
typedef void (*log_fmt_cb) (log_priority prio, const char *fmt, ...)
__attribute__ ((format (printf, 2, 3)));
typedef void (*log_fmtex_cb) (log_priority prio, const char *srcfile,
size_t line, const char *fmt, ...)
__attribute__ ((format (printf, 4, 5)));
typedef void (*log_fmtexerr_cb) (log_priority prio, const char *srcfile,
size_t line, const char *fmt, ...)
__attribute__ ((format (printf, 4, 5)));
extern log_priority log_prio;
extern log_open_cb log_open;
extern log_close_cb log_close;
extern log_fmt_cb log_fmt;
extern log_fmtex_cb log_fmtex;
extern log_fmtexerr_cb log_fmtexerr;
char *
curtime_str(char *buf, size_t siz);
#endif
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