2 * util/log.c - implementation of the log code
4 * Copyright (c) 2007, NLnet Labs. All rights reserved.
6 * This software is open source.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * Redistributions of source code must retain the above copyright notice,
13 * this list of conditions and the following disclaimer.
15 * Redistributions in binary form must reproduce the above copyright notice,
16 * this list of conditions and the following disclaimer in the documentation
17 * and/or other materials provided with the distribution.
19 * Neither the name of the NLNET LABS nor the names of its contributors may
20 * be used to endorse or promote products derived from this software without
21 * specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
27 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
29 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
30 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 * Implementation of log.h.
42 #include "util/locks.h"
43 #include "ldns/sbuffer.h"
51 /**define LOG_ constants */
54 # define LOG_WARNING 4
60 # include "winrc/win_svc.h"
63 /* default verbosity */
64 enum verbosity_value verbosity = 0;
65 /** the file logged to. */
66 static FILE* logfile = 0;
67 /** if key has been created */
68 static int key_created = 0;
69 /** pthread key for thread ids in logfile */
70 static ub_thread_key_t logkey;
71 /** the identity of this executable/process */
72 static const char* ident="unbound";
73 #if defined(HAVE_SYSLOG_H) || defined(UB_ON_WINDOWS)
74 /** are we using syslog(3) to log to */
75 static int logging_to_syslog = 0;
76 #endif /* HAVE_SYSLOG_H */
77 /** time to print in log, if NULL, use time(2) */
78 static time_t* log_now = NULL;
79 /** print time in UTC or in secondsfrom1970 */
80 static int log_time_asc = 0;
83 log_init(const char* filename, int use_syslog, const char* chrootdir)
88 ub_thread_key_create(&logkey, NULL);
91 #if defined(HAVE_SYSLOG_H) || defined(UB_ON_WINDOWS)
95 verbose(VERB_QUERY, "switching log to %s",
96 use_syslog?"syslog":(filename&&filename[0]?filename:"stderr"));
97 if(logfile && logfile != stderr)
100 if(logging_to_syslog) {
102 logging_to_syslog = 0;
105 /* do not delay opening until first write, because we may
106 * chroot and no longer be able to access dev/log and so on */
107 openlog(ident, LOG_NDELAY, LOG_DAEMON);
108 logging_to_syslog = 1;
111 #elif defined(UB_ON_WINDOWS)
112 if(logging_to_syslog) {
113 logging_to_syslog = 0;
116 logging_to_syslog = 1;
119 #endif /* HAVE_SYSLOG_H */
120 if(!filename || !filename[0]) {
124 /* open the file for logging */
125 if(chrootdir && chrootdir[0] && strncmp(filename, chrootdir,
126 strlen(chrootdir)) == 0)
127 filename += strlen(chrootdir);
128 f = fopen(filename, "a");
130 log_err("Could not open logfile %s: %s", filename,
134 #ifndef UB_ON_WINDOWS
135 /* line buffering does not work on windows */
136 setvbuf(f, NULL, (int)_IOLBF, 0);
141 void log_file(FILE *f)
146 void log_thread_set(int* num)
148 ub_thread_key_set(logkey, num);
151 void log_ident_set(const char* id)
156 void log_set_time(time_t* t)
161 void log_set_time_asc(int use_asc)
163 log_time_asc = use_asc;
167 log_vmsg(int pri, const char* type,
168 const char *format, va_list args)
170 char message[MAXSYSLOGMSGLEN];
171 unsigned int* tid = (unsigned int*)ub_thread_key_get(logkey);
173 #if defined(HAVE_STRFTIME) && defined(HAVE_LOCALTIME_R)
176 #elif defined(UB_ON_WINDOWS)
177 char tmbuf[128], dtbuf[128];
180 vsnprintf(message, sizeof(message), format, args);
182 if(logging_to_syslog) {
183 syslog(pri, "[%d:%x] %s: %s",
184 (int)getpid(), tid?*tid:0, type, message);
187 #elif defined(UB_ON_WINDOWS)
188 if(logging_to_syslog) {
192 DWORD tp = MSG_GENERIC_ERR;
193 WORD wt = EVENTLOG_ERROR_TYPE;
194 if(strcmp(type, "info") == 0) {
196 wt=EVENTLOG_INFORMATION_TYPE;
197 } else if(strcmp(type, "warning") == 0) {
199 wt=EVENTLOG_WARNING_TYPE;
200 } else if(strcmp(type, "notice") == 0
201 || strcmp(type, "debug") == 0) {
202 tp=MSG_GENERIC_SUCCESS;
205 snprintf(m, sizeof(m), "[%s:%x] %s: %s",
206 ident, tid?*tid:0, type, message);
207 s = RegisterEventSource(NULL, SERVICE_NAME);
209 ReportEvent(s, wt, 0, tp, NULL, 1, 0, &str, NULL);
210 DeregisterEventSource(s);
213 #endif /* HAVE_SYSLOG_H */
216 now = (time_t)*log_now;
217 else now = (time_t)time(NULL);
218 #if defined(HAVE_STRFTIME) && defined(HAVE_LOCALTIME_R)
219 if(log_time_asc && strftime(tmbuf, sizeof(tmbuf), "%b %d %H:%M:%S",
220 localtime_r(&now, &tm))%(sizeof(tmbuf)) != 0) {
221 /* %sizeof buf!=0 because old strftime returned max on error */
222 fprintf(logfile, "%s %s[%d:%x] %s: %s\n", tmbuf,
223 ident, (int)getpid(), tid?*tid:0, type, message);
225 #elif defined(UB_ON_WINDOWS)
226 if(log_time_asc && GetTimeFormat(LOCALE_USER_DEFAULT, 0, NULL, NULL,
227 tmbuf, sizeof(tmbuf)) && GetDateFormat(LOCALE_USER_DEFAULT, 0,
228 NULL, NULL, dtbuf, sizeof(dtbuf))) {
229 fprintf(logfile, "%s %s %s[%d:%x] %s: %s\n", dtbuf, tmbuf,
230 ident, (int)getpid(), tid?*tid:0, type, message);
233 fprintf(logfile, "[" ARG_LL "d] %s[%d:%x] %s: %s\n", (long long)now,
234 ident, (int)getpid(), tid?*tid:0, type, message);
236 /* line buffering does not work on windows */
242 * implementation of log_info
243 * @param format: format string printf-style.
246 log_info(const char *format, ...)
249 va_start(args, format);
250 log_vmsg(LOG_INFO, "info", format, args);
255 * implementation of log_err
256 * @param format: format string printf-style.
259 log_err(const char *format, ...)
262 va_start(args, format);
263 log_vmsg(LOG_ERR, "error", format, args);
268 * implementation of log_warn
269 * @param format: format string printf-style.
272 log_warn(const char *format, ...)
275 va_start(args, format);
276 log_vmsg(LOG_WARNING, "warning", format, args);
281 * implementation of fatal_exit
282 * @param format: format string printf-style.
285 fatal_exit(const char *format, ...)
288 va_start(args, format);
289 log_vmsg(LOG_CRIT, "fatal error", format, args);
295 * implementation of verbose
296 * @param level: verbose level for the message.
297 * @param format: format string printf-style.
300 verbose(enum verbosity_value level, const char* format, ...)
303 va_start(args, format);
304 if(verbosity >= level) {
305 if(level == VERB_OPS)
306 log_vmsg(LOG_NOTICE, "notice", format, args);
307 else if(level == VERB_DETAIL)
308 log_vmsg(LOG_INFO, "info", format, args);
309 else log_vmsg(LOG_DEBUG, "debug", format, args);
316 log_hex_f(enum verbosity_value v, const char* msg, void* data, size_t length)
319 uint8_t* data8 = (uint8_t*)data;
320 const char* hexchar = "0123456789ABCDEF";
321 char buf[1024+1]; /* alloc blocksize hex chars + \0 */
322 const size_t blocksize = 512;
326 verbose(v, "%s[%u]", msg, (unsigned)length);
330 for(i=0; i<length; i+=blocksize/2) {
332 if(length - i < blocksize/2)
334 for(j=0; j<len; j++) {
335 buf[j*2] = hexchar[ data8[i+j] >> 4 ];
336 buf[j*2 + 1] = hexchar[ data8[i+j] & 0xF ];
339 verbose(v, "%s[%u:%u] %.*s", msg, (unsigned)length,
340 (unsigned)i, (int)len*2, buf);
345 log_hex(const char* msg, void* data, size_t length)
347 log_hex_f(verbosity, msg, data, length);
350 void log_buf(enum verbosity_value level, const char* msg, sldns_buffer* buf)
352 if(verbosity < level)
354 log_hex_f(level, msg, sldns_buffer_begin(buf), sldns_buffer_limit(buf));
358 char* wsa_strerror(DWORD err)
360 static char unknown[32];
363 case WSA_INVALID_HANDLE: return "Specified event object handle is invalid.";
364 case WSA_NOT_ENOUGH_MEMORY: return "Insufficient memory available.";
365 case WSA_INVALID_PARAMETER: return "One or more parameters are invalid.";
366 case WSA_OPERATION_ABORTED: return "Overlapped operation aborted.";
367 case WSA_IO_INCOMPLETE: return "Overlapped I/O event object not in signaled state.";
368 case WSA_IO_PENDING: return "Overlapped operations will complete later.";
369 case WSAEINTR: return "Interrupted function call.";
370 case WSAEBADF: return "File handle is not valid.";
371 case WSAEACCES: return "Permission denied.";
372 case WSAEFAULT: return "Bad address.";
373 case WSAEINVAL: return "Invalid argument.";
374 case WSAEMFILE: return "Too many open files.";
375 case WSAEWOULDBLOCK: return "Resource temporarily unavailable.";
376 case WSAEINPROGRESS: return "Operation now in progress.";
377 case WSAEALREADY: return "Operation already in progress.";
378 case WSAENOTSOCK: return "Socket operation on nonsocket.";
379 case WSAEDESTADDRREQ: return "Destination address required.";
380 case WSAEMSGSIZE: return "Message too long.";
381 case WSAEPROTOTYPE: return "Protocol wrong type for socket.";
382 case WSAENOPROTOOPT: return "Bad protocol option.";
383 case WSAEPROTONOSUPPORT: return "Protocol not supported.";
384 case WSAESOCKTNOSUPPORT: return "Socket type not supported.";
385 case WSAEOPNOTSUPP: return "Operation not supported.";
386 case WSAEPFNOSUPPORT: return "Protocol family not supported.";
387 case WSAEAFNOSUPPORT: return "Address family not supported by protocol family.";
388 case WSAEADDRINUSE: return "Address already in use.";
389 case WSAEADDRNOTAVAIL: return "Cannot assign requested address.";
390 case WSAENETDOWN: return "Network is down.";
391 case WSAENETUNREACH: return "Network is unreachable.";
392 case WSAENETRESET: return "Network dropped connection on reset.";
393 case WSAECONNABORTED: return "Software caused connection abort.";
394 case WSAECONNRESET: return "Connection reset by peer.";
395 case WSAENOBUFS: return "No buffer space available.";
396 case WSAEISCONN: return "Socket is already connected.";
397 case WSAENOTCONN: return "Socket is not connected.";
398 case WSAESHUTDOWN: return "Cannot send after socket shutdown.";
399 case WSAETOOMANYREFS: return "Too many references.";
400 case WSAETIMEDOUT: return "Connection timed out.";
401 case WSAECONNREFUSED: return "Connection refused.";
402 case WSAELOOP: return "Cannot translate name.";
403 case WSAENAMETOOLONG: return "Name too long.";
404 case WSAEHOSTDOWN: return "Host is down.";
405 case WSAEHOSTUNREACH: return "No route to host.";
406 case WSAENOTEMPTY: return "Directory not empty.";
407 case WSAEPROCLIM: return "Too many processes.";
408 case WSAEUSERS: return "User quota exceeded.";
409 case WSAEDQUOT: return "Disk quota exceeded.";
410 case WSAESTALE: return "Stale file handle reference.";
411 case WSAEREMOTE: return "Item is remote.";
412 case WSASYSNOTREADY: return "Network subsystem is unavailable.";
413 case WSAVERNOTSUPPORTED: return "Winsock.dll version out of range.";
414 case WSANOTINITIALISED: return "Successful WSAStartup not yet performed.";
415 case WSAEDISCON: return "Graceful shutdown in progress.";
416 case WSAENOMORE: return "No more results.";
417 case WSAECANCELLED: return "Call has been canceled.";
418 case WSAEINVALIDPROCTABLE: return "Procedure call table is invalid.";
419 case WSAEINVALIDPROVIDER: return "Service provider is invalid.";
420 case WSAEPROVIDERFAILEDINIT: return "Service provider failed to initialize.";
421 case WSASYSCALLFAILURE: return "System call failure.";
422 case WSASERVICE_NOT_FOUND: return "Service not found.";
423 case WSATYPE_NOT_FOUND: return "Class type not found.";
424 case WSA_E_NO_MORE: return "No more results.";
425 case WSA_E_CANCELLED: return "Call was canceled.";
426 case WSAEREFUSED: return "Database query was refused.";
427 case WSAHOST_NOT_FOUND: return "Host not found.";
428 case WSATRY_AGAIN: return "Nonauthoritative host not found.";
429 case WSANO_RECOVERY: return "This is a nonrecoverable error.";
430 case WSANO_DATA: return "Valid name, no data record of requested type.";
431 case WSA_QOS_RECEIVERS: return "QOS receivers.";
432 case WSA_QOS_SENDERS: return "QOS senders.";
433 case WSA_QOS_NO_SENDERS: return "No QOS senders.";
434 case WSA_QOS_NO_RECEIVERS: return "QOS no receivers.";
435 case WSA_QOS_REQUEST_CONFIRMED: return "QOS request confirmed.";
436 case WSA_QOS_ADMISSION_FAILURE: return "QOS admission error.";
437 case WSA_QOS_POLICY_FAILURE: return "QOS policy failure.";
438 case WSA_QOS_BAD_STYLE: return "QOS bad style.";
439 case WSA_QOS_BAD_OBJECT: return "QOS bad object.";
440 case WSA_QOS_TRAFFIC_CTRL_ERROR: return "QOS traffic control error.";
441 case WSA_QOS_GENERIC_ERROR: return "QOS generic error.";
442 case WSA_QOS_ESERVICETYPE: return "QOS service type error.";
443 case WSA_QOS_EFLOWSPEC: return "QOS flowspec error.";
444 case WSA_QOS_EPROVSPECBUF: return "Invalid QOS provider buffer.";
445 case WSA_QOS_EFILTERSTYLE: return "Invalid QOS filter style.";
446 case WSA_QOS_EFILTERTYPE: return "Invalid QOS filter type.";
447 case WSA_QOS_EFILTERCOUNT: return "Incorrect QOS filter count.";
448 case WSA_QOS_EOBJLENGTH: return "Invalid QOS object length.";
449 case WSA_QOS_EFLOWCOUNT: return "Incorrect QOS flow count.";
450 /*case WSA_QOS_EUNKOWNPSOBJ: return "Unrecognized QOS object.";*/
451 case WSA_QOS_EPOLICYOBJ: return "Invalid QOS policy object.";
452 case WSA_QOS_EFLOWDESC: return "Invalid QOS flow descriptor.";
453 case WSA_QOS_EPSFLOWSPEC: return "Invalid QOS provider-specific flowspec.";
454 case WSA_QOS_EPSFILTERSPEC: return "Invalid QOS provider-specific filterspec.";
455 case WSA_QOS_ESDMODEOBJ: return "Invalid QOS shape discard mode object.";
456 case WSA_QOS_ESHAPERATEOBJ: return "Invalid QOS shaping rate object.";
457 case WSA_QOS_RESERVED_PETYPE: return "Reserved policy QOS element type.";
459 snprintf(unknown, sizeof(unknown),
460 "unknown WSA error code %d", (int)err);
464 #endif /* USE_WINSOCK */