1 dded5403 2023-10-16 op /*
  2 dded5403 2023-10-16 op  * This is free and unencumbered software released into the public domain.
  3 dded5403 2023-10-16 op  *
  4 dded5403 2023-10-16 op  * Anyone is free to copy, modify, publish, use, compile, sell, or
  5 dded5403 2023-10-16 op  * distribute this software, either in source code form or as a compiled
  6 dded5403 2023-10-16 op  * binary, for any purpose, commercial or non-commercial, and by any
  7 dded5403 2023-10-16 op  * means.
  8 dded5403 2023-10-16 op  */
  9 dded5403 2023-10-16 op 
 10 dded5403 2023-10-16 op #include <err.h>
 11 dded5403 2023-10-16 op #include <errno.h>
 12 dded5403 2023-10-16 op #include <stdarg.h>
 13 dded5403 2023-10-16 op #include <stdio.h>
 14 dded5403 2023-10-16 op #include <stdlib.h>
 15 dded5403 2023-10-16 op #include <string.h>
 16 dded5403 2023-10-16 op #include <syslog.h>
 17 dded5403 2023-10-16 op #include <time.h>
 18 dded5403 2023-10-16 op 
 19 dded5403 2023-10-16 op #include "log.h"
 20 dded5403 2023-10-16 op 
 21 dded5403 2023-10-16 op __dead void	log_syslog_fatal(int, const char *, ...);
 22 dded5403 2023-10-16 op __dead void	log_syslog_fatalx(int, const char *, ...);
 23 dded5403 2023-10-16 op void		log_syslog_warn(const char *, ...);
 24 dded5403 2023-10-16 op void		log_syslog_warnx(const char *, ...);
 25 dded5403 2023-10-16 op void		log_syslog_info(const char *, ...);
 26 dded5403 2023-10-16 op void		log_syslog_debug(const char *, ...);
 27 dded5403 2023-10-16 op 
 28 dded5403 2023-10-16 op const struct logger syslogger = {
 29 dded5403 2023-10-16 op 	.fatal =	&log_syslog_fatal,
 30 dded5403 2023-10-16 op 	.fatalx =	&log_syslog_fatalx,
 31 dded5403 2023-10-16 op 	.warn =		&log_syslog_warn,
 32 dded5403 2023-10-16 op 	.warnx =	&log_syslog_warnx,
 33 dded5403 2023-10-16 op 	.info =		&log_syslog_info,
 34 dded5403 2023-10-16 op 	.debug =	&log_syslog_debug,
 35 dded5403 2023-10-16 op };
 36 dded5403 2023-10-16 op 
 37 dded5403 2023-10-16 op const struct logger dbglogger = {
 38 dded5403 2023-10-16 op 	.fatal =	&err,
 39 dded5403 2023-10-16 op 	.fatalx =	&errx,
 40 dded5403 2023-10-16 op 	.warn =		&warn,
 41 dded5403 2023-10-16 op 	.warnx =	&warnx,
 42 dded5403 2023-10-16 op 	.info =		&warnx,
 43 dded5403 2023-10-16 op 	.debug =	&warnx,
 44 dded5403 2023-10-16 op };
 45 dded5403 2023-10-16 op 
 46 dded5403 2023-10-16 op const struct logger *logger = &dbglogger;
 47 dded5403 2023-10-16 op 
 48 dded5403 2023-10-16 op static char logbuf[4096];
 49 dded5403 2023-10-16 op static int debug;
 50 dded5403 2023-10-16 op static int verbose;
 51 dded5403 2023-10-16 op 
 52 dded5403 2023-10-16 op void
 53 dded5403 2023-10-16 op log_init(int n_debug, int facility)
 54 dded5403 2023-10-16 op {
 55 dded5403 2023-10-16 op 	debug = n_debug;
 56 dded5403 2023-10-16 op 	verbose = n_debug;
 57 dded5403 2023-10-16 op 
 58 dded5403 2023-10-16 op 	tzset();
 59 dded5403 2023-10-16 op 	if (debug)
 60 dded5403 2023-10-16 op 		setvbuf(stderr, logbuf, _IOLBF, sizeof(logbuf));
 61 dded5403 2023-10-16 op 	else {
 62 dded5403 2023-10-16 op 		openlog(getprogname(), LOG_PID | LOG_NDELAY, facility);
 63 dded5403 2023-10-16 op 		logger = &syslogger;
 64 dded5403 2023-10-16 op 	}
 65 dded5403 2023-10-16 op }
 66 dded5403 2023-10-16 op 
 67 dded5403 2023-10-16 op void
 68 dded5403 2023-10-16 op log_setverbose(int v)
 69 dded5403 2023-10-16 op {
 70 dded5403 2023-10-16 op 	verbose = v;
 71 dded5403 2023-10-16 op }
 72 dded5403 2023-10-16 op 
 73 dded5403 2023-10-16 op __dead void
 74 dded5403 2023-10-16 op log_syslog_fatal(int eval, const char *fmt, ...)
 75 dded5403 2023-10-16 op {
 76 dded5403 2023-10-16 op 	static char	 s[BUFSIZ];
 77 dded5403 2023-10-16 op 	va_list		 ap;
 78 dded5403 2023-10-16 op 	int		 r, save_errno;
 79 dded5403 2023-10-16 op 
 80 dded5403 2023-10-16 op 	save_errno = errno;
 81 dded5403 2023-10-16 op 
 82 dded5403 2023-10-16 op 	va_start(ap, fmt);
 83 dded5403 2023-10-16 op 	r = vsnprintf(s, sizeof(s), fmt, ap);
 84 dded5403 2023-10-16 op 	va_end(ap);
 85 dded5403 2023-10-16 op 
 86 dded5403 2023-10-16 op 	errno = save_errno;
 87 dded5403 2023-10-16 op 
 88 dded5403 2023-10-16 op 	if (r > 0 && (size_t)r <= sizeof(s))
 89 dded5403 2023-10-16 op 		syslog(LOG_DAEMON|LOG_CRIT, "%s: %s", s, strerror(errno));
 90 dded5403 2023-10-16 op 
 91 dded5403 2023-10-16 op 	exit(eval);
 92 dded5403 2023-10-16 op }
 93 dded5403 2023-10-16 op 
 94 dded5403 2023-10-16 op __dead void
 95 dded5403 2023-10-16 op log_syslog_fatalx(int eval, const char *fmt, ...)
 96 dded5403 2023-10-16 op {
 97 dded5403 2023-10-16 op 	va_list		 ap;
 98 dded5403 2023-10-16 op 
 99 dded5403 2023-10-16 op 	va_start(ap, fmt);
100 dded5403 2023-10-16 op 	vsyslog(LOG_DAEMON|LOG_CRIT, fmt, ap);
101 dded5403 2023-10-16 op 	va_end(ap);
102 dded5403 2023-10-16 op 
103 dded5403 2023-10-16 op 	exit(eval);
104 dded5403 2023-10-16 op }
105 dded5403 2023-10-16 op 
106 dded5403 2023-10-16 op void
107 dded5403 2023-10-16 op log_syslog_warn(const char *fmt, ...)
108 dded5403 2023-10-16 op {
109 dded5403 2023-10-16 op 	static char	 s[BUFSIZ];
110 dded5403 2023-10-16 op 	va_list		 ap;
111 dded5403 2023-10-16 op 	int		 r, save_errno;
112 dded5403 2023-10-16 op 
113 dded5403 2023-10-16 op 	save_errno = errno;
114 dded5403 2023-10-16 op 
115 dded5403 2023-10-16 op 	va_start(ap, fmt);
116 dded5403 2023-10-16 op 	r = vsnprintf(s, sizeof(s), fmt, ap);
117 dded5403 2023-10-16 op 	va_end(ap);
118 dded5403 2023-10-16 op 
119 dded5403 2023-10-16 op 	errno = save_errno;
120 dded5403 2023-10-16 op 
121 dded5403 2023-10-16 op 	if (r > 0 && (size_t)r < sizeof(s))
122 dded5403 2023-10-16 op 		syslog(LOG_DAEMON|LOG_ERR, "%s: %s", s, strerror(errno));
123 dded5403 2023-10-16 op 
124 dded5403 2023-10-16 op 	errno = save_errno;
125 dded5403 2023-10-16 op }
126 dded5403 2023-10-16 op 
127 dded5403 2023-10-16 op void
128 dded5403 2023-10-16 op log_syslog_warnx(const char *fmt, ...)
129 dded5403 2023-10-16 op {
130 dded5403 2023-10-16 op 	va_list		 ap;
131 dded5403 2023-10-16 op 	int		 save_errno;
132 dded5403 2023-10-16 op 
133 dded5403 2023-10-16 op 	save_errno = errno;
134 dded5403 2023-10-16 op 	va_start(ap, fmt);
135 dded5403 2023-10-16 op 	vsyslog(LOG_DAEMON|LOG_ERR, fmt, ap);
136 dded5403 2023-10-16 op 	va_end(ap);
137 dded5403 2023-10-16 op 	errno = save_errno;
138 dded5403 2023-10-16 op }
139 dded5403 2023-10-16 op 
140 dded5403 2023-10-16 op void
141 dded5403 2023-10-16 op log_syslog_info(const char *fmt, ...)
142 dded5403 2023-10-16 op {
143 dded5403 2023-10-16 op 	va_list		 ap;
144 dded5403 2023-10-16 op 	int		 save_errno;
145 dded5403 2023-10-16 op 
146 dded5403 2023-10-16 op 	if (verbose < 1)
147 dded5403 2023-10-16 op 		return;
148 dded5403 2023-10-16 op 
149 dded5403 2023-10-16 op 	save_errno = errno;
150 dded5403 2023-10-16 op 	va_start(ap, fmt);
151 dded5403 2023-10-16 op 	vsyslog(LOG_DAEMON|LOG_INFO, fmt, ap);
152 dded5403 2023-10-16 op 	va_end(ap);
153 dded5403 2023-10-16 op 	errno = save_errno;
154 dded5403 2023-10-16 op }
155 dded5403 2023-10-16 op 
156 dded5403 2023-10-16 op void
157 dded5403 2023-10-16 op log_syslog_debug(const char *fmt, ...)
158 dded5403 2023-10-16 op {
159 dded5403 2023-10-16 op 	va_list		 ap;
160 dded5403 2023-10-16 op 	int		 save_errno;
161 dded5403 2023-10-16 op 
162 dded5403 2023-10-16 op 	if (verbose < 2)
163 dded5403 2023-10-16 op 		return;
164 dded5403 2023-10-16 op 
165 dded5403 2023-10-16 op 	save_errno = errno;
166 dded5403 2023-10-16 op 	va_start(ap, fmt);
167 dded5403 2023-10-16 op 	vsyslog(LOG_DAEMON|LOG_DEBUG, fmt, ap);
168 dded5403 2023-10-16 op 	va_end(ap);
169 dded5403 2023-10-16 op 	errno = save_errno;
170 dded5403 2023-10-16 op }