2 * Author: Tatu Ylonen <ylo@cs.hut.fi>
3 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
6 * As far as I am concerned, the code I have written for this software
7 * can be used freely for any purpose. Any derived versions of this
8 * software must be clearly marked as such, and if the derived work is
9 * incompatible with the protocol description in the RFC file, it must be
10 * called by a name other than "ssh" or "Secure Shell".
13 * Copyright (c) 2000 Markus Friedl. All rights reserved.
15 * Redistribution and use in source and binary forms, with or without
16 * modification, are permitted provided that the following conditions
18 * 1. Redistributions of source code must retain the above copyright
19 * notice, this list of conditions and the following disclaimer.
20 * 2. Redistributions in binary form must reproduce the above copyright
21 * notice, this list of conditions and the following disclaimer in the
22 * documentation and/or other materials provided with the distribution.
24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
26 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
27 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
28 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
29 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
30 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
33 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 RCSID("$OpenBSD: log.c,v 1.29 2003/09/23 20:17:11 markus Exp $");
43 #if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H)
47 static LogLevel log_level
= SYSLOG_LEVEL_INFO
;
48 static int log_on_stderr
= 1;
49 static int log_facility
= LOG_AUTH
;
52 extern char *__progname
;
54 #define LOG_SYSLOG_VIS (VIS_CSTYLE|VIS_NL|VIS_TAB|VIS_OCTAL)
55 #define LOG_STDERR_VIS (VIS_SAFE|VIS_OCTAL)
57 /* textual representation of log-facilities/levels */
62 } log_facilities
[] = {
63 { "DAEMON", SYSLOG_FACILITY_DAEMON
},
64 { "USER", SYSLOG_FACILITY_USER
},
65 { "AUTH", SYSLOG_FACILITY_AUTH
},
67 { "AUTHPRIV", SYSLOG_FACILITY_AUTHPRIV
},
69 { "LOCAL0", SYSLOG_FACILITY_LOCAL0
},
70 { "LOCAL1", SYSLOG_FACILITY_LOCAL1
},
71 { "LOCAL2", SYSLOG_FACILITY_LOCAL2
},
72 { "LOCAL3", SYSLOG_FACILITY_LOCAL3
},
73 { "LOCAL4", SYSLOG_FACILITY_LOCAL4
},
74 { "LOCAL5", SYSLOG_FACILITY_LOCAL5
},
75 { "LOCAL6", SYSLOG_FACILITY_LOCAL6
},
76 { "LOCAL7", SYSLOG_FACILITY_LOCAL7
},
77 { NULL
, SYSLOG_FACILITY_NOT_SET
}
85 { "QUIET", SYSLOG_LEVEL_QUIET
},
86 { "FATAL", SYSLOG_LEVEL_FATAL
},
87 { "ERROR", SYSLOG_LEVEL_ERROR
},
88 { "INFO", SYSLOG_LEVEL_INFO
},
89 { "VERBOSE", SYSLOG_LEVEL_VERBOSE
},
90 { "DEBUG", SYSLOG_LEVEL_DEBUG1
},
91 { "DEBUG1", SYSLOG_LEVEL_DEBUG1
},
92 { "DEBUG2", SYSLOG_LEVEL_DEBUG2
},
93 { "DEBUG3", SYSLOG_LEVEL_DEBUG3
},
94 { NULL
, SYSLOG_LEVEL_NOT_SET
}
98 log_facility_number(char *name
)
103 for (i
= 0; log_facilities
[i
].name
; i
++)
104 if (strcasecmp(log_facilities
[i
].name
, name
) == 0)
105 return log_facilities
[i
].val
;
106 return SYSLOG_FACILITY_NOT_SET
;
110 log_level_number(char *name
)
115 for (i
= 0; log_levels
[i
].name
; i
++)
116 if (strcasecmp(log_levels
[i
].name
, name
) == 0)
117 return log_levels
[i
].val
;
118 return SYSLOG_LEVEL_NOT_SET
;
121 /* Error messages that should be logged. */
124 error(const char *fmt
,...)
129 do_log(SYSLOG_LEVEL_ERROR
, fmt
, args
);
133 /* Log this message (information that usually should go to the log). */
136 logit(const char *fmt
,...)
141 do_log(SYSLOG_LEVEL_INFO
, fmt
, args
);
145 /* More detailed messages (information that does not need to go to the log). */
148 verbose(const char *fmt
,...)
153 do_log(SYSLOG_LEVEL_VERBOSE
, fmt
, args
);
157 /* Debugging messages that should not be logged during normal operation. */
160 debug(const char *fmt
,...)
165 do_log(SYSLOG_LEVEL_DEBUG1
, fmt
, args
);
170 debug2(const char *fmt
,...)
175 do_log(SYSLOG_LEVEL_DEBUG2
, fmt
, args
);
180 debug3(const char *fmt
,...)
185 do_log(SYSLOG_LEVEL_DEBUG3
, fmt
, args
);
190 * Initialize the log.
194 log_init(char *av0
, LogLevel level
, SyslogFacility facility
, int on_stderr
)
199 case SYSLOG_LEVEL_QUIET
:
200 case SYSLOG_LEVEL_FATAL
:
201 case SYSLOG_LEVEL_ERROR
:
202 case SYSLOG_LEVEL_INFO
:
203 case SYSLOG_LEVEL_VERBOSE
:
204 case SYSLOG_LEVEL_DEBUG1
:
205 case SYSLOG_LEVEL_DEBUG2
:
206 case SYSLOG_LEVEL_DEBUG3
:
210 fprintf(stderr
, "Unrecognized internal syslog level code %d\n",
215 log_on_stderr
= on_stderr
;
220 case SYSLOG_FACILITY_DAEMON
:
221 log_facility
= LOG_DAEMON
;
223 case SYSLOG_FACILITY_USER
:
224 log_facility
= LOG_USER
;
226 case SYSLOG_FACILITY_AUTH
:
227 log_facility
= LOG_AUTH
;
230 case SYSLOG_FACILITY_AUTHPRIV
:
231 log_facility
= LOG_AUTHPRIV
;
234 case SYSLOG_FACILITY_LOCAL0
:
235 log_facility
= LOG_LOCAL0
;
237 case SYSLOG_FACILITY_LOCAL1
:
238 log_facility
= LOG_LOCAL1
;
240 case SYSLOG_FACILITY_LOCAL2
:
241 log_facility
= LOG_LOCAL2
;
243 case SYSLOG_FACILITY_LOCAL3
:
244 log_facility
= LOG_LOCAL3
;
246 case SYSLOG_FACILITY_LOCAL4
:
247 log_facility
= LOG_LOCAL4
;
249 case SYSLOG_FACILITY_LOCAL5
:
250 log_facility
= LOG_LOCAL5
;
252 case SYSLOG_FACILITY_LOCAL6
:
253 log_facility
= LOG_LOCAL6
;
255 case SYSLOG_FACILITY_LOCAL7
:
256 log_facility
= LOG_LOCAL7
;
260 "Unrecognized internal syslog facility code %d\n",
266 #define MSGBUFSIZ 1024
269 do_log(LogLevel level
, const char *fmt
, va_list args
)
271 #if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
272 struct syslog_data sdata
= SYSLOG_DATA_INIT
;
274 char msgbuf
[MSGBUFSIZ
];
275 char fmtbuf
[MSGBUFSIZ
];
279 if (level
> log_level
)
283 case SYSLOG_LEVEL_FATAL
:
288 case SYSLOG_LEVEL_ERROR
:
293 case SYSLOG_LEVEL_INFO
:
296 case SYSLOG_LEVEL_VERBOSE
:
299 case SYSLOG_LEVEL_DEBUG1
:
303 case SYSLOG_LEVEL_DEBUG2
:
307 case SYSLOG_LEVEL_DEBUG3
:
312 txt
= "internal error";
317 snprintf(fmtbuf
, sizeof(fmtbuf
), "%s: %s", txt
, fmt
);
318 vsnprintf(msgbuf
, sizeof(msgbuf
), fmtbuf
, args
);
320 vsnprintf(msgbuf
, sizeof(msgbuf
), fmt
, args
);
322 strnvis(fmtbuf
, msgbuf
, sizeof(fmtbuf
),
323 log_on_stderr
? LOG_STDERR_VIS
: LOG_SYSLOG_VIS
);
325 snprintf(msgbuf
, sizeof msgbuf
, "%s\r\n", fmtbuf
);
326 write(STDERR_FILENO
, msgbuf
, strlen(msgbuf
));
328 #if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
329 openlog_r(argv0
? argv0
: __progname
, LOG_PID
, log_facility
, &sdata
);
330 syslog_r(pri
, &sdata
, "%.500s", fmtbuf
);
333 openlog(argv0
? argv0
: __progname
, LOG_PID
, log_facility
);
334 syslog(pri
, "%.500s", fmtbuf
);