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/* $OpenBSD: log.h,v 1.34 2024/06/27 22:36:44 djm Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
* All rights reserved
*
* As far as I am concerned, the code I have written for this software
* can be used freely for any purpose. Any derived versions of this
* software must be clearly marked as such, and if the derived work is
* incompatible with the protocol description in the RFC file, it must be
* called by a name other than "ssh" or "Secure Shell".
*/
#ifndef SSH_LOG_H
#define SSH_LOG_H
#include <stdarg.h> /* va_list */
#include "ssherr.h" /* ssh_err() */
/* Supported syslog facilities and levels. */
typedef enum {
SYSLOG_FACILITY_DAEMON,
SYSLOG_FACILITY_USER,
SYSLOG_FACILITY_AUTH,
#ifdef LOG_AUTHPRIV
SYSLOG_FACILITY_AUTHPRIV,
#endif
SYSLOG_FACILITY_LOCAL0,
SYSLOG_FACILITY_LOCAL1,
SYSLOG_FACILITY_LOCAL2,
SYSLOG_FACILITY_LOCAL3,
SYSLOG_FACILITY_LOCAL4,
SYSLOG_FACILITY_LOCAL5,
SYSLOG_FACILITY_LOCAL6,
SYSLOG_FACILITY_LOCAL7,
SYSLOG_FACILITY_NOT_SET = -1
} SyslogFacility;
typedef enum {
SYSLOG_LEVEL_QUIET,
SYSLOG_LEVEL_FATAL,
SYSLOG_LEVEL_ERROR,
SYSLOG_LEVEL_INFO,
SYSLOG_LEVEL_VERBOSE,
SYSLOG_LEVEL_DEBUG1,
SYSLOG_LEVEL_DEBUG2,
SYSLOG_LEVEL_DEBUG3,
SYSLOG_LEVEL_NOT_SET = -1
} LogLevel;
typedef void (log_handler_fn)(LogLevel, int, const char *, void *);
void log_init(const char *, LogLevel, SyslogFacility, int);
LogLevel log_level_get(void);
int log_change_level(LogLevel);
int log_is_on_stderr(void);
void log_redirect_stderr_to(const char *);
void log_verbose_add(const char *);
void log_verbose_reset(void);
SyslogFacility log_facility_number(char *);
const char * log_facility_name(SyslogFacility);
LogLevel log_level_number(char *);
const char * log_level_name(LogLevel);
void set_log_handler(log_handler_fn *, void *);
void cleanup_exit(int) __attribute__((noreturn));
void sshlog(const char *, const char *, int, int,
LogLevel, const char *, const char *, ...)
__attribute__((format(printf, 7, 8)));
void sshlogv(const char *, const char *, int, int,
LogLevel, const char *, const char *, va_list);
void sshlogdie(const char *, const char *, int, int,
LogLevel, const char *, const char *, ...) __attribute__((noreturn))
__attribute__((format(printf, 7, 8)));
void sshfatal(const char *, const char *, int, int,
LogLevel, const char *, const char *, ...) __attribute__((noreturn))
__attribute__((format(printf, 7, 8)));
void sshlogdirect(LogLevel, int, const char *, ...)
__attribute__((format(printf, 3, 4)));
#define do_log2(level, ...) sshlog(__FILE__, __func__, __LINE__, 0, level, NULL, __VA_ARGS__)
#define debug3(...) sshlog(__FILE__, __func__, __LINE__, 0, SYSLOG_LEVEL_DEBUG3, NULL, __VA_ARGS__)
#define debug2(...) sshlog(__FILE__, __func__, __LINE__, 0, SYSLOG_LEVEL_DEBUG2, NULL, __VA_ARGS__)
#define debug(...) sshlog(__FILE__, __func__, __LINE__, 0, SYSLOG_LEVEL_DEBUG1, NULL, __VA_ARGS__)
#define verbose(...) sshlog(__FILE__, __func__, __LINE__, 0, SYSLOG_LEVEL_VERBOSE, NULL, __VA_ARGS__)
#define logit(...) sshlog(__FILE__, __func__, __LINE__, 0, SYSLOG_LEVEL_INFO, NULL, __VA_ARGS__)
#define error(...) sshlog(__FILE__, __func__, __LINE__, 0, SYSLOG_LEVEL_ERROR, NULL, __VA_ARGS__)
#define fatal(...) sshfatal(__FILE__, __func__, __LINE__, 0, SYSLOG_LEVEL_FATAL, NULL, __VA_ARGS__)
#define logdie(...) sshlogdie(__FILE__, __func__, __LINE__, 0, SYSLOG_LEVEL_ERROR, NULL, __VA_ARGS__)
/* Variants that prepend the caller's function */
#define do_log2_f(level, ...) sshlog(__FILE__, __func__, __LINE__, 1, level, NULL, __VA_ARGS__)
#define debug3_f(...) sshlog(__FILE__, __func__, __LINE__, 1, SYSLOG_LEVEL_DEBUG3, NULL, __VA_ARGS__)
#define debug2_f(...) sshlog(__FILE__, __func__, __LINE__, 1, SYSLOG_LEVEL_DEBUG2, NULL, __VA_ARGS__)
#define debug_f(...) sshlog(__FILE__, __func__, __LINE__, 1, SYSLOG_LEVEL_DEBUG1, NULL, __VA_ARGS__)
#define verbose_f(...) sshlog(__FILE__, __func__, __LINE__, 1, SYSLOG_LEVEL_VERBOSE, NULL, __VA_ARGS__)
#define logit_f(...) sshlog(__FILE__, __func__, __LINE__, 1, SYSLOG_LEVEL_INFO, NULL, __VA_ARGS__)
#define error_f(...) sshlog(__FILE__, __func__, __LINE__, 1, SYSLOG_LEVEL_ERROR, NULL, __VA_ARGS__)
#define fatal_f(...) sshfatal(__FILE__, __func__, __LINE__, 1, SYSLOG_LEVEL_FATAL, NULL, __VA_ARGS__)
#define logdie_f(...) sshlogdie(__FILE__, __func__, __LINE__, 1, SYSLOG_LEVEL_ERROR, NULL, __VA_ARGS__)
/* Variants that appends a ssh_err message */
#define do_log2_r(r, level, ...) sshlog(__FILE__, __func__, __LINE__, 0, level, ssh_err(r), __VA_ARGS__)
#define debug3_r(r, ...) sshlog(__FILE__, __func__, __LINE__, 0, SYSLOG_LEVEL_DEBUG3, ssh_err(r), __VA_ARGS__)
#define debug2_r(r, ...) sshlog(__FILE__, __func__, __LINE__, 0, SYSLOG_LEVEL_DEBUG2, ssh_err(r), __VA_ARGS__)
#define debug_r(r, ...) sshlog(__FILE__, __func__, __LINE__, 0, SYSLOG_LEVEL_DEBUG1, ssh_err(r), __VA_ARGS__)
#define verbose_r(r, ...) sshlog(__FILE__, __func__, __LINE__, 0, SYSLOG_LEVEL_VERBOSE, ssh_err(r), __VA_ARGS__)
#define logit_r(r, ...) sshlog(__FILE__, __func__, __LINE__, 0, SYSLOG_LEVEL_INFO, ssh_err(r), __VA_ARGS__)
#define error_r(r, ...) sshlog(__FILE__, __func__, __LINE__, 0, SYSLOG_LEVEL_ERROR, ssh_err(r), __VA_ARGS__)
#define fatal_r(r, ...) sshfatal(__FILE__, __func__, __LINE__, 0, SYSLOG_LEVEL_FATAL, ssh_err(r), __VA_ARGS__)
#define logdie_r(r, ...) sshlogdie(__FILE__, __func__, __LINE__, 0, SYSLOG_LEVEL_ERROR, ssh_err(r), __VA_ARGS__)
#define do_log2_fr(r, level, ...) sshlog(__FILE__, __func__, __LINE__, 1, level, ssh_err(r), __VA_ARGS__)
#define debug3_fr(r, ...) sshlog(__FILE__, __func__, __LINE__, 1, SYSLOG_LEVEL_DEBUG3, ssh_err(r), __VA_ARGS__)
#define debug2_fr(r, ...) sshlog(__FILE__, __func__, __LINE__, 1, SYSLOG_LEVEL_DEBUG2, ssh_err(r), __VA_ARGS__)
#define debug_fr(r, ...) sshlog(__FILE__, __func__, __LINE__, 1, SYSLOG_LEVEL_DEBUG1, ssh_err(r), __VA_ARGS__)
#define verbose_fr(r, ...) sshlog(__FILE__, __func__, __LINE__, 1, SYSLOG_LEVEL_VERBOSE, ssh_err(r), __VA_ARGS__)
#define logit_fr(r, ...) sshlog(__FILE__, __func__, __LINE__, 1, SYSLOG_LEVEL_INFO, ssh_err(r), __VA_ARGS__)
#define error_fr(r, ...) sshlog(__FILE__, __func__, __LINE__, 1, SYSLOG_LEVEL_ERROR, ssh_err(r), __VA_ARGS__)
#define fatal_fr(r, ...) sshfatal(__FILE__, __func__, __LINE__, 1, SYSLOG_LEVEL_FATAL, ssh_err(r), __VA_ARGS__)
#define logdie_fr(r, ...) sshlogdie(__FILE__, __func__, __LINE__, 1, SYSLOG_LEVEL_ERROR, ssh_err(r), __VA_ARGS__)
#endif
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