Commit | Line | Data |
a0d0e21e |
1 | package Sys::Syslog; |
8168e71f |
2 | use strict; |
89c3c464 |
3 | use warnings::register; |
8168e71f |
4 | use Carp; |
07b7e4bc |
5 | use File::Basename; |
6e4ef777 |
6 | use POSIX qw(strftime setlocale LC_TIME); |
7 | use Socket ':all'; |
3b355090 |
8 | require 5.006; |
a0d0e21e |
9 | require Exporter; |
a0d0e21e |
10 | |
89c3c464 |
11 | { no strict 'vars'; |
1307ca85 |
12 | $VERSION = '0.18_01'; |
89c3c464 |
13 | @ISA = qw(Exporter); |
942974c1 |
14 | |
89c3c464 |
15 | %EXPORT_TAGS = ( |
4b035b3d |
16 | standard => [qw(openlog syslog closelog setlogmask)], |
17 | extended => [qw(setlogsock)], |
18 | macros => [ |
19 | # levels |
20 | qw( |
21 | LOG_ALERT LOG_CRIT LOG_DEBUG LOG_EMERG LOG_ERR |
22 | LOG_INFO LOG_NOTICE LOG_WARNING |
23 | ), |
24 | |
25 | # facilities |
26 | qw( |
27 | LOG_AUTH LOG_AUTHPRIV LOG_CRON LOG_DAEMON LOG_FTP |
28 | LOG_INSTALL LOG_KERN LOG_LAUNCHD LOG_LFMT LOG_LOCAL0 |
29 | LOG_LOCAL1 LOG_LOCAL2 LOG_LOCAL3 LOG_LOCAL4 LOG_LOCAL5 |
30 | LOG_LOCAL6 LOG_LOCAL7 LOG_LPR LOG_MAIL LOG_NETINFO |
31 | LOG_NEWS LOG_RAS LOG_REMOTEAUTH LOG_SYSLOG LOG_USER LOG_UUCP |
32 | ), |
33 | |
34 | # options |
35 | qw( |
36 | LOG_CONS LOG_PID LOG_NDELAY LOG_NOWAIT LOG_ODELAY LOG_PERROR |
37 | ), |
38 | |
39 | # others macros |
40 | qw( |
41 | LOG_FACMASK LOG_NFACILITIES LOG_PRIMASK |
42 | LOG_MASK LOG_UPTO |
43 | ), |
44 | ], |
89c3c464 |
45 | ); |
942974c1 |
46 | |
89c3c464 |
47 | @EXPORT = ( |
07b7e4bc |
48 | @{$EXPORT_TAGS{standard}}, |
89c3c464 |
49 | ); |
942974c1 |
50 | |
89c3c464 |
51 | @EXPORT_OK = ( |
07b7e4bc |
52 | @{$EXPORT_TAGS{extended}}, |
53 | @{$EXPORT_TAGS{macros}}, |
89c3c464 |
54 | ); |
55 | |
56 | eval { |
57 | require XSLoader; |
58 | XSLoader::load('Sys::Syslog', $VERSION); |
59 | 1 |
60 | } or do { |
61 | require DynaLoader; |
62 | push @ISA, 'DynaLoader'; |
63 | bootstrap Sys::Syslog $VERSION; |
64 | }; |
65 | } |
66 | |
67 | |
68 | # |
69 | # Public variables |
70 | # |
71 | our $host; # host to send syslog messages to |
72 | |
73 | # |
74 | # Global variables |
75 | # |
76 | my $connected = 0; # flag to indicate if we're connected or not |
77 | my $syslog_send; # coderef of the function used to send messages |
78 | my $syslog_path = undef; # syslog path for "stream" and "unix" mechanisms |
79 | my $transmit_ok = 0; # flag to indicate if the last message was transmited |
80 | my $current_proto = undef; # current mechanism used to transmit messages |
81 | my $ident = ''; # identifiant prepended to each message |
82 | my $facility = ''; # current facility |
83 | my $maskpri = LOG_UPTO(&LOG_DEBUG); # current log mask |
84 | |
85 | my %options = ( |
86 | ndelay => 0, |
87 | nofatal => 0, |
88 | nowait => 0, |
89 | pid => 0, |
942974c1 |
90 | ); |
a0d0e21e |
91 | |
23642f4b |
92 | # it would be nice to try stream/unix first, since that will be |
93 | # most efficient. However streams are dodgy - see _syslog_send_stream |
8edeb3ad |
94 | my @connectMethods = qw(native tcp udp unix stream console); |
dbfdd438 |
95 | if ($^O =~ /^(freebsd|linux)$/) { |
96 | @connectMethods = grep { $_ ne 'udp' } @connectMethods; |
97 | } |
23642f4b |
98 | my @defaultMethods = @connectMethods; |
89c3c464 |
99 | my @fallbackMethods = (); |
8168e71f |
100 | |
89c3c464 |
101 | # coderef for a nicer handling of errors |
102 | my $err_sub = $options{nofatal} ? \&warnings::warnif : \&croak; |
5be1dfc7 |
103 | |
5be1dfc7 |
104 | |
89c3c464 |
105 | sub AUTOLOAD { |
106 | # This AUTOLOAD is used to 'autoload' constants from the constant() |
107 | # XS function. |
108 | no strict 'vars'; |
109 | my $constname; |
110 | ($constname = $AUTOLOAD) =~ s/.*:://; |
111 | croak "Sys::Syslog::constant() not defined" if $constname eq 'constant'; |
112 | my ($error, $val) = constant($constname); |
113 | croak $error if $error; |
114 | no strict 'refs'; |
115 | *$AUTOLOAD = sub { $val }; |
116 | goto &$AUTOLOAD; |
117 | } |
5be1dfc7 |
118 | |
5be1dfc7 |
119 | |
89c3c464 |
120 | sub openlog { |
121 | ($ident, my $logopt, $facility) = @_; |
8168e71f |
122 | |
89c3c464 |
123 | for my $opt (split /\b/, $logopt) { |
124 | $options{$opt} = 1 if exists $options{$opt} |
125 | } |
5be1dfc7 |
126 | |
89c3c464 |
127 | $err_sub = $options{nofatal} ? \&warnings::warnif : \&croak; |
128 | return 1 unless $options{ndelay}; |
129 | connect_log(); |
130 | } |
5be1dfc7 |
131 | |
89c3c464 |
132 | sub closelog { |
133 | $facility = $ident = ''; |
134 | disconnect_log(); |
135 | } |
8168e71f |
136 | |
89c3c464 |
137 | sub setlogmask { |
138 | my $oldmask = $maskpri; |
139 | $maskpri = shift unless $_[0] == 0; |
140 | $oldmask; |
141 | } |
07b7e4bc |
142 | |
89c3c464 |
143 | sub setlogsock { |
144 | my $setsock = shift; |
145 | $syslog_path = shift; |
146 | disconnect_log() if $connected; |
147 | $transmit_ok = 0; |
148 | @fallbackMethods = (); |
149 | @connectMethods = @defaultMethods; |
942974c1 |
150 | |
89c3c464 |
151 | if (ref $setsock eq 'ARRAY') { |
152 | @connectMethods = @$setsock; |
942974c1 |
153 | |
89c3c464 |
154 | } elsif (lc $setsock eq 'stream') { |
155 | unless (defined $syslog_path) { |
156 | my @try = qw(/dev/log /dev/conslog); |
157 | if (length &_PATH_LOG) { # Undefined _PATH_LOG is "". |
158 | unshift @try, &_PATH_LOG; |
159 | } |
160 | for my $try (@try) { |
161 | if (-w $try) { |
162 | $syslog_path = $try; |
163 | last; |
164 | } |
165 | } |
166 | warnings::warnif "stream passed to setlogsock, but could not find any device" |
167 | unless defined $syslog_path |
168 | } |
169 | unless (-w $syslog_path) { |
07b7e4bc |
170 | warnings::warnif "stream passed to setlogsock, but $syslog_path is not writable"; |
89c3c464 |
171 | return undef; |
172 | } else { |
173 | @connectMethods = ( 'stream' ); |
174 | } |
942974c1 |
175 | |
89c3c464 |
176 | } elsif (lc $setsock eq 'unix') { |
8edeb3ad |
177 | if (length _PATH_LOG() || (defined $syslog_path && -w $syslog_path)) { |
178 | $syslog_path = _PATH_LOG() unless defined $syslog_path; |
89c3c464 |
179 | @connectMethods = ( 'unix' ); |
180 | } else { |
181 | warnings::warnif 'unix passed to setlogsock, but path not available'; |
182 | return undef; |
183 | } |
8168e71f |
184 | |
89c3c464 |
185 | } elsif (lc $setsock eq 'native') { |
186 | @connectMethods = ( 'native' ); |
8168e71f |
187 | |
89c3c464 |
188 | } elsif (lc $setsock eq 'tcp') { |
189 | if (getservbyname('syslog', 'tcp') || getservbyname('syslogng', 'tcp')) { |
190 | @connectMethods = ( 'tcp' ); |
191 | } else { |
192 | warnings::warnif "tcp passed to setlogsock, but tcp service unavailable"; |
193 | return undef; |
194 | } |
942974c1 |
195 | |
89c3c464 |
196 | } elsif (lc $setsock eq 'udp') { |
197 | if (getservbyname('syslog', 'udp')) { |
198 | @connectMethods = ( 'udp' ); |
199 | } else { |
200 | warnings::warnif "udp passed to setlogsock, but udp service unavailable"; |
201 | return undef; |
202 | } |
942974c1 |
203 | |
89c3c464 |
204 | } elsif (lc $setsock eq 'inet') { |
205 | @connectMethods = ( 'tcp', 'udp' ); |
942974c1 |
206 | |
89c3c464 |
207 | } elsif (lc $setsock eq 'console') { |
208 | @connectMethods = ( 'console' ); |
942974c1 |
209 | |
89c3c464 |
210 | } else { |
211 | croak "Invalid argument passed to setlogsock; must be 'stream', 'unix', 'native', 'tcp', 'udp' or 'inet'" |
212 | } |
942974c1 |
213 | |
89c3c464 |
214 | return 1; |
215 | } |
942974c1 |
216 | |
89c3c464 |
217 | sub syslog { |
218 | my $priority = shift; |
219 | my $mask = shift; |
220 | my ($message, $buf); |
221 | my (@words, $num, $numpri, $numfac, $sum); |
222 | my $failed = undef; |
223 | my $fail_time = undef; |
8edeb3ad |
224 | my $error = $!; |
8168e71f |
225 | |
89c3c464 |
226 | my $facility = $facility; # may need to change temporarily. |
8168e71f |
227 | |
89c3c464 |
228 | croak "syslog: expecting argument \$priority" unless defined $priority; |
229 | croak "syslog: expecting argument \$format" unless defined $mask; |
5be1dfc7 |
230 | |
8edeb3ad |
231 | @words = split(/\W+/, $priority, 2); # Allow "level" or "level|facility". |
89c3c464 |
232 | undef $numpri; |
233 | undef $numfac; |
5be1dfc7 |
234 | |
89c3c464 |
235 | foreach (@words) { |
8edeb3ad |
236 | $num = xlate($_); # Translate word to number. |
89c3c464 |
237 | if ($num < 0) { |
238 | croak "syslog: invalid level/facility: $_" |
239 | } |
240 | elsif ($num <= &LOG_PRIMASK) { |
241 | croak "syslog: too many levels given: $_" if defined $numpri; |
242 | $numpri = $num; |
243 | return 0 unless LOG_MASK($numpri) & $maskpri; |
244 | } |
245 | else { |
246 | croak "syslog: too many facilities given: $_" if defined $numfac; |
247 | $facility = $_; |
248 | $numfac = $num; |
249 | } |
250 | } |
5be1dfc7 |
251 | |
89c3c464 |
252 | croak "syslog: level must be given" unless defined $numpri; |
942974c1 |
253 | |
89c3c464 |
254 | if (not defined $numfac) { # Facility not specified in this call. |
255 | $facility = 'user' unless $facility; |
256 | $numfac = xlate($facility); |
257 | } |
3d256c0f |
258 | |
07b7e4bc |
259 | # if no identifiant, set up a default one |
260 | $ident ||= basename($0) || getlogin() || getpwuid($<) || 'syslog'; |
261 | |
89c3c464 |
262 | connect_log() unless $connected; |
8168e71f |
263 | |
89c3c464 |
264 | if ($mask =~ /%m/) { |
07b7e4bc |
265 | # escape percent signs for sprintf() |
8edeb3ad |
266 | $error =~ s/%/%%/g if @_; |
89c3c464 |
267 | # replace %m with $err, if preceded by an even number of percent signs |
8edeb3ad |
268 | $mask =~ s/(?<!%)((?:%%)*)%m/$1$error/g; |
89c3c464 |
269 | } |
5be1dfc7 |
270 | |
89c3c464 |
271 | $mask .= "\n" unless $mask =~ /\n$/; |
272 | $message = @_ ? sprintf($mask, @_) : $mask; |
942974c1 |
273 | |
89c3c464 |
274 | if($current_proto eq 'native') { |
275 | $buf = $message; |
942974c1 |
276 | |
89c3c464 |
277 | } else { |
278 | my $whoami = $ident; |
89c3c464 |
279 | $whoami .= "[$$]" if $options{pid}; |
942974c1 |
280 | |
89c3c464 |
281 | $sum = $numpri + $numfac; |
282 | my $oldlocale = setlocale(LC_TIME); |
283 | setlocale(LC_TIME, 'C'); |
284 | my $timestamp = strftime "%b %e %T", localtime; |
285 | setlocale(LC_TIME, $oldlocale); |
286 | $buf = "<$sum>$timestamp $whoami: $message\0"; |
287 | } |
942974c1 |
288 | |
89c3c464 |
289 | # it's possible that we'll get an error from sending |
290 | # (e.g. if method is UDP and there is no UDP listener, |
291 | # then we'll get ECONNREFUSED on the send). So what we |
292 | # want to do at this point is to fallback onto a different |
293 | # connection method. |
294 | while (scalar @fallbackMethods || $syslog_send) { |
295 | if ($failed && (time - $fail_time) > 60) { |
296 | # it's been a while... maybe things have been fixed |
297 | @fallbackMethods = (); |
298 | disconnect_log(); |
299 | $transmit_ok = 0; # make it look like a fresh attempt |
300 | connect_log(); |
301 | } |
942974c1 |
302 | |
89c3c464 |
303 | if ($connected && !connection_ok()) { |
304 | # Something was OK, but has now broken. Remember coz we'll |
305 | # want to go back to what used to be OK. |
306 | $failed = $current_proto unless $failed; |
307 | $fail_time = time; |
308 | disconnect_log(); |
309 | } |
942974c1 |
310 | |
89c3c464 |
311 | connect_log() unless $connected; |
312 | $failed = undef if ($current_proto && $failed && $current_proto eq $failed); |
942974c1 |
313 | |
89c3c464 |
314 | if ($syslog_send) { |
315 | if ($syslog_send->($buf, $numpri)) { |
316 | $transmit_ok++; |
317 | return 1; |
318 | } |
319 | # typically doesn't happen, since errors are rare from write(). |
320 | disconnect_log(); |
321 | } |
322 | } |
323 | # could not send, could not fallback onto a working |
324 | # connection method. Lose. |
325 | return 0; |
326 | } |
942974c1 |
327 | |
89c3c464 |
328 | sub _syslog_send_console { |
329 | my ($buf) = @_; |
330 | chop($buf); # delete the NUL from the end |
331 | # The console print is a method which could block |
332 | # so we do it in a child process and always return success |
333 | # to the caller. |
334 | if (my $pid = fork) { |
942974c1 |
335 | |
89c3c464 |
336 | if ($options{nowait}) { |
337 | return 1; |
338 | } else { |
339 | if (waitpid($pid, 0) >= 0) { |
340 | return ($? >> 8); |
341 | } else { |
342 | # it's possible that the caller has other |
343 | # plans for SIGCHLD, so let's not interfere |
344 | return 1; |
345 | } |
346 | } |
347 | } else { |
348 | if (open(CONS, ">/dev/console")) { |
349 | my $ret = print CONS $buf . "\r"; # XXX: should this be \x0A ? |
350 | exit $ret if defined $pid; |
351 | close CONS; |
352 | } |
353 | exit if defined $pid; |
354 | } |
355 | } |
942974c1 |
356 | |
89c3c464 |
357 | sub _syslog_send_stream { |
358 | my ($buf) = @_; |
359 | # XXX: this only works if the OS stream implementation makes a write |
360 | # look like a putmsg() with simple header. For instance it works on |
361 | # Solaris 8 but not Solaris 7. |
362 | # To be correct, it should use a STREAMS API, but perl doesn't have one. |
363 | return syswrite(SYSLOG, $buf, length($buf)); |
364 | } |
942974c1 |
365 | |
89c3c464 |
366 | sub _syslog_send_socket { |
367 | my ($buf) = @_; |
368 | return syswrite(SYSLOG, $buf, length($buf)); |
369 | #return send(SYSLOG, $buf, 0); |
370 | } |
942974c1 |
371 | |
89c3c464 |
372 | sub _syslog_send_native { |
373 | my ($buf, $numpri) = @_; |
374 | eval { syslog_xs($numpri, $buf) }; |
375 | return $@ ? 0 : 1; |
376 | } |
ce43db9b |
377 | |
5be1dfc7 |
378 | |
89c3c464 |
379 | # xlate() |
380 | # ----- |
381 | # private function to translate names to numeric values |
382 | # |
383 | sub xlate { |
384 | my($name) = @_; |
385 | return $name+0 if $name =~ /^\s*\d+\s*$/; |
386 | $name = uc $name; |
387 | $name = "LOG_$name" unless $name =~ /^LOG_/; |
388 | $name = "Sys::Syslog::$name"; |
389 | # Can't have just eval { &$name } || -1 because some LOG_XXX may be zero. |
390 | my $value = eval { no strict 'refs'; &$name }; |
391 | defined $value ? $value : -1; |
392 | } |
5be1dfc7 |
393 | |
942974c1 |
394 | |
89c3c464 |
395 | # connect_log() |
396 | # ----------- |
397 | # This function acts as a kind of front-end: it tries to connect to |
398 | # a syslog service using the selected methods, trying each one in the |
399 | # selected order. |
400 | # |
401 | sub connect_log { |
402 | @fallbackMethods = @connectMethods unless scalar @fallbackMethods; |
07b7e4bc |
403 | |
89c3c464 |
404 | if ($transmit_ok && $current_proto) { |
405 | # Retry what we were on, because it has worked in the past. |
406 | unshift(@fallbackMethods, $current_proto); |
407 | } |
07b7e4bc |
408 | |
89c3c464 |
409 | $connected = 0; |
410 | my @errs = (); |
411 | my $proto = undef; |
07b7e4bc |
412 | |
89c3c464 |
413 | while ($proto = shift @fallbackMethods) { |
414 | no strict 'refs'; |
415 | my $fn = "connect_$proto"; |
416 | $connected = &$fn(\@errs) if defined &$fn; |
417 | last if $connected; |
418 | } |
3d256c0f |
419 | |
89c3c464 |
420 | $transmit_ok = 0; |
421 | if ($connected) { |
422 | $current_proto = $proto; |
423 | my($old) = select(SYSLOG); $| = 1; select($old); |
424 | } else { |
425 | @fallbackMethods = (); |
426 | $err_sub->(join "\n\t- ", "no connection to syslog available", @errs); |
427 | return undef; |
428 | } |
429 | } |
942974c1 |
430 | |
89c3c464 |
431 | sub connect_tcp { |
432 | my ($errs) = @_; |
4b035b3d |
433 | |
89c3c464 |
434 | my $tcp = getprotobyname('tcp'); |
435 | if (!defined $tcp) { |
436 | push @$errs, "getprotobyname failed for tcp"; |
437 | return 0; |
438 | } |
4b035b3d |
439 | |
440 | my $syslog = getservbyname('syslog', 'tcp'); |
441 | $syslog = getservbyname('syslogng', 'tcp') unless defined $syslog; |
89c3c464 |
442 | if (!defined $syslog) { |
443 | push @$errs, "getservbyname failed for syslog/tcp and syslogng/tcp"; |
444 | return 0; |
445 | } |
942974c1 |
446 | |
4b035b3d |
447 | my $addr; |
89c3c464 |
448 | if (defined $host) { |
4b035b3d |
449 | $addr = inet_aton($host); |
450 | if (!$addr) { |
89c3c464 |
451 | push @$errs, "can't lookup $host"; |
452 | return 0; |
453 | } |
454 | } else { |
4b035b3d |
455 | $addr = INADDR_LOOPBACK; |
89c3c464 |
456 | } |
4b035b3d |
457 | $addr = sockaddr_in($syslog, $addr); |
942974c1 |
458 | |
89c3c464 |
459 | if (!socket(SYSLOG, AF_INET, SOCK_STREAM, $tcp)) { |
460 | push @$errs, "tcp socket: $!"; |
461 | return 0; |
462 | } |
463 | setsockopt(SYSLOG, SOL_SOCKET, SO_KEEPALIVE, 1); |
464 | setsockopt(SYSLOG, &IPPROTO_TCP, &TCP_NODELAY, 1); |
4b035b3d |
465 | if (!connect(SYSLOG, $addr)) { |
89c3c464 |
466 | push @$errs, "tcp connect: $!"; |
467 | return 0; |
468 | } |
4b035b3d |
469 | |
89c3c464 |
470 | $syslog_send = \&_syslog_send_socket; |
4b035b3d |
471 | |
89c3c464 |
472 | return 1; |
473 | } |
942974c1 |
474 | |
89c3c464 |
475 | sub connect_udp { |
476 | my ($errs) = @_; |
4b035b3d |
477 | |
89c3c464 |
478 | my $udp = getprotobyname('udp'); |
479 | if (!defined $udp) { |
480 | push @$errs, "getprotobyname failed for udp"; |
481 | return 0; |
482 | } |
4b035b3d |
483 | |
484 | my $syslog = getservbyname('syslog', 'udp'); |
89c3c464 |
485 | if (!defined $syslog) { |
486 | push @$errs, "getservbyname failed for syslog/udp"; |
487 | return 0; |
488 | } |
4b035b3d |
489 | |
490 | my $addr; |
89c3c464 |
491 | if (defined $host) { |
4b035b3d |
492 | $addr = inet_aton($host); |
493 | if (!$addr) { |
89c3c464 |
494 | push @$errs, "can't lookup $host"; |
495 | return 0; |
496 | } |
497 | } else { |
4b035b3d |
498 | $addr = INADDR_LOOPBACK; |
89c3c464 |
499 | } |
4b035b3d |
500 | $addr = sockaddr_in($syslog, $addr); |
942974c1 |
501 | |
89c3c464 |
502 | if (!socket(SYSLOG, AF_INET, SOCK_DGRAM, $udp)) { |
503 | push @$errs, "udp socket: $!"; |
504 | return 0; |
505 | } |
4b035b3d |
506 | if (!connect(SYSLOG, $addr)) { |
89c3c464 |
507 | push @$errs, "udp connect: $!"; |
508 | return 0; |
509 | } |
4b035b3d |
510 | |
89c3c464 |
511 | # We want to check that the UDP connect worked. However the only |
512 | # way to do that is to send a message and see if an ICMP is returned |
513 | _syslog_send_socket(""); |
514 | if (!connection_ok()) { |
515 | push @$errs, "udp connect: nobody listening"; |
516 | return 0; |
517 | } |
4b035b3d |
518 | |
89c3c464 |
519 | $syslog_send = \&_syslog_send_socket; |
4b035b3d |
520 | |
89c3c464 |
521 | return 1; |
522 | } |
9903e4c8 |
523 | |
89c3c464 |
524 | sub connect_stream { |
525 | my ($errs) = @_; |
526 | # might want syslog_path to be variable based on syslog.h (if only |
527 | # it were in there!) |
8edeb3ad |
528 | $syslog_path = '/dev/conslog' unless defined $syslog_path; |
89c3c464 |
529 | if (!-w $syslog_path) { |
530 | push @$errs, "stream $syslog_path is not writable"; |
531 | return 0; |
532 | } |
533 | if (!open(SYSLOG, ">" . $syslog_path)) { |
534 | push @$errs, "stream can't open $syslog_path: $!"; |
535 | return 0; |
536 | } |
537 | $syslog_send = \&_syslog_send_stream; |
538 | return 1; |
539 | } |
942974c1 |
540 | |
89c3c464 |
541 | sub connect_unix { |
542 | my ($errs) = @_; |
4b035b3d |
543 | |
544 | $syslog_path ||= _PATH_LOG() if length _PATH_LOG(); |
545 | |
546 | if (not defined $syslog_path) { |
547 | push @$errs, "_PATH_LOG not available in syslog.h and no user-supplied socket path"; |
89c3c464 |
548 | return 0; |
549 | } |
4b035b3d |
550 | |
89c3c464 |
551 | if (! -S $syslog_path) { |
552 | push @$errs, "$syslog_path is not a socket"; |
553 | return 0; |
554 | } |
4b035b3d |
555 | |
556 | my $addr = sockaddr_un($syslog_path); |
557 | if (!$addr) { |
89c3c464 |
558 | push @$errs, "can't locate $syslog_path"; |
559 | return 0; |
560 | } |
4b035b3d |
561 | if (!socket(SYSLOG, AF_UNIX, SOCK_STREAM, 0)) { |
89c3c464 |
562 | push @$errs, "unix stream socket: $!"; |
563 | return 0; |
564 | } |
4b035b3d |
565 | if (!connect(SYSLOG, $addr)) { |
566 | if (!socket(SYSLOG, AF_UNIX, SOCK_DGRAM, 0)) { |
89c3c464 |
567 | push @$errs, "unix dgram socket: $!"; |
568 | return 0; |
569 | } |
4b035b3d |
570 | if (!connect(SYSLOG, $addr)) { |
89c3c464 |
571 | push @$errs, "unix dgram connect: $!"; |
572 | return 0; |
573 | } |
574 | } |
4b035b3d |
575 | |
89c3c464 |
576 | $syslog_send = \&_syslog_send_socket; |
4b035b3d |
577 | |
89c3c464 |
578 | return 1; |
579 | } |
942974c1 |
580 | |
89c3c464 |
581 | sub connect_native { |
582 | my ($errs) = @_; |
583 | my $logopt = 0; |
5be1dfc7 |
584 | |
89c3c464 |
585 | # reconstruct the numeric equivalent of the options |
586 | for my $opt (keys %options) { |
587 | $logopt += xlate($opt) if $options{$opt} |
588 | } |
942974c1 |
589 | |
89c3c464 |
590 | eval { openlog_xs($ident, $logopt, xlate($facility)) }; |
591 | if ($@) { |
592 | push @$errs, $@; |
593 | return 0; |
594 | } |
942974c1 |
595 | |
89c3c464 |
596 | $syslog_send = \&_syslog_send_native; |
942974c1 |
597 | |
89c3c464 |
598 | return 1; |
599 | } |
6e4ef777 |
600 | |
89c3c464 |
601 | sub connect_console { |
602 | my ($errs) = @_; |
603 | if (!-w '/dev/console') { |
604 | push @$errs, "console is not writable"; |
605 | return 0; |
606 | } |
607 | $syslog_send = \&_syslog_send_console; |
608 | return 1; |
609 | } |
6e4ef777 |
610 | |
89c3c464 |
611 | # to test if the connection is still good, we need to check if any |
612 | # errors are present on the connection. The errors will not be raised |
613 | # by a write. Instead, sockets are made readable and the next read |
614 | # would cause the error to be returned. Unfortunately the syslog |
615 | # 'protocol' never provides anything for us to read. But with |
616 | # judicious use of select(), we can see if it would be readable... |
617 | sub connection_ok { |
618 | return 1 if defined $current_proto and ( |
619 | $current_proto eq 'native' or $current_proto eq 'console' |
620 | ); |
621 | my $rin = ''; |
622 | vec($rin, fileno(SYSLOG), 1) = 1; |
623 | my $ret = select $rin, undef, $rin, 0; |
624 | return ($ret ? 0 : 1); |
625 | } |
942974c1 |
626 | |
89c3c464 |
627 | sub disconnect_log { |
628 | $connected = 0; |
629 | $syslog_send = undef; |
942974c1 |
630 | |
89c3c464 |
631 | if($current_proto eq 'native') { |
632 | eval { close_xs() }; |
633 | return 1; |
634 | } |
6e4ef777 |
635 | |
89c3c464 |
636 | return close SYSLOG; |
637 | } |
6e4ef777 |
638 | |
89c3c464 |
639 | 1; |
942974c1 |
640 | |
89c3c464 |
641 | __END__ |
5be1dfc7 |
642 | |
89c3c464 |
643 | =head1 NAME |
8168e71f |
644 | |
89c3c464 |
645 | Sys::Syslog - Perl interface to the UNIX syslog(3) calls |
3ffabb8c |
646 | |
89c3c464 |
647 | =head1 VERSION |
3ffabb8c |
648 | |
07b7e4bc |
649 | Version 0.18 |
23642f4b |
650 | |
89c3c464 |
651 | =head1 SYNOPSIS |
cb63fe9d |
652 | |
89c3c464 |
653 | use Sys::Syslog; # all except setlogsock(), or: |
654 | use Sys::Syslog qw(:DEFAULT setlogsock); # default set, plus setlogsock() |
655 | use Sys::Syslog qw(:standard :macros); # standard functions, plus macros |
23642f4b |
656 | |
89c3c464 |
657 | setlogsock $sock_type; |
658 | openlog $ident, $logopt, $facility; # don't forget this |
659 | syslog $priority, $format, @args; |
660 | $oldmask = setlogmask $mask_priority; |
661 | closelog; |
cb63fe9d |
662 | |
942974c1 |
663 | |
89c3c464 |
664 | =head1 DESCRIPTION |
5be1dfc7 |
665 | |
89c3c464 |
666 | C<Sys::Syslog> is an interface to the UNIX C<syslog(3)> program. |
667 | Call C<syslog()> with a string priority and a list of C<printf()> args |
668 | just like C<syslog(3)>. |
5be1dfc7 |
669 | |
5be1dfc7 |
670 | |
89c3c464 |
671 | =head1 EXPORTS |
5be1dfc7 |
672 | |
89c3c464 |
673 | C<Sys::Syslog> exports the following C<Exporter> tags: |
5be1dfc7 |
674 | |
89c3c464 |
675 | =over 4 |
676 | |
677 | =item * |
678 | |
679 | C<:standard> exports the standard C<syslog(3)> functions: |
680 | |
681 | openlog closelog setlogmask syslog |
682 | |
683 | =item * |
684 | |
685 | C<:extended> exports the Perl specific functions for C<syslog(3)>: |
686 | |
687 | setlogsock |
688 | |
689 | =item * |
690 | |
691 | C<:macros> exports the symbols corresponding to most of your C<syslog(3)> |
692 | macros and the C<LOG_UPTO()> and C<LOG_MASK()> functions. |
693 | See L<"CONSTANTS"> for the supported constants and their meaning. |
694 | |
695 | =back |
696 | |
697 | By default, C<Sys::Syslog> exports the symbols from the C<:standard> tag. |
698 | |
699 | |
700 | =head1 FUNCTIONS |
701 | |
702 | =over 4 |
703 | |
704 | =item B<openlog($ident, $logopt, $facility)> |
705 | |
706 | Opens the syslog. |
707 | C<$ident> is prepended to every message. C<$logopt> contains zero or |
708 | more of the options detailed below. C<$facility> specifies the part |
709 | of the system to report about, for example C<LOG_USER> or C<LOG_LOCAL0>: |
710 | see L<"Facilities"> for a list of well-known facilities, and your |
711 | C<syslog(3)> documentation for the facilities available in your system. |
712 | Check L<"SEE ALSO"> for useful links. Facility can be given as a string |
713 | or a numeric macro. |
714 | |
715 | This function will croak if it can't connect to the syslog daemon. |
716 | |
717 | Note that C<openlog()> now takes three arguments, just like C<openlog(3)>. |
718 | |
719 | B<You should use C<openlog()> before calling C<syslog()>.> |
720 | |
721 | B<Options> |
722 | |
723 | =over 4 |
724 | |
725 | =item * |
726 | |
727 | C<cons> - This option is ignored, since the failover mechanism will drop |
728 | down to the console automatically if all other media fail. |
729 | |
730 | =item * |
731 | |
732 | C<ndelay> - Open the connection immediately (normally, the connection is |
733 | opened when the first message is logged). |
734 | |
735 | =item * |
736 | |
737 | C<nofatal> - When set to true, C<openlog()> and C<syslog()> will only |
738 | emit warnings instead of dying if the connection to the syslog can't |
739 | be established. |
740 | |
741 | =item * |
742 | |
743 | C<nowait> - Don't wait for child processes that may have been created |
744 | while logging the message. (The GNU C library does not create a child |
745 | process, so this option has no effect on Linux.) |
746 | |
747 | =item * |
748 | |
749 | C<pid> - Include PID with each message. |
750 | |
751 | =back |
752 | |
753 | B<Examples> |
754 | |
755 | Open the syslog with options C<ndelay> and C<pid>, and with facility C<LOCAL0>: |
756 | |
757 | openlog($name, "ndelay,pid", "local0"); |
758 | |
759 | Same thing, but this time using the macro corresponding to C<LOCAL0>: |
760 | |
761 | openlog($name, "ndelay,pid", LOG_LOCAL0); |
762 | |
763 | |
764 | =item B<syslog($priority, $message)> |
765 | |
766 | =item B<syslog($priority, $format, @args)> |
767 | |
768 | If C<$priority> permits, logs C<$message> or C<sprintf($format, @args)> |
769 | with the addition that C<%m> in $message or C<$format> is replaced with |
770 | C<"$!"> (the latest error message). |
771 | |
772 | C<$priority> can specify a level, or a level and a facility. Levels and |
773 | facilities can be given as strings or as macros. |
774 | |
775 | If you didn't use C<openlog()> before using C<syslog()>, C<syslog()> will |
776 | try to guess the C<$ident> by extracting the shortest prefix of |
777 | C<$format> that ends in a C<":">. |
778 | |
779 | B<Examples> |
780 | |
781 | syslog("info", $message); # informational level |
782 | syslog(LOG_INFO, $message); # informational level |
783 | |
784 | syslog("info|local0", $message); # information level, Local0 facility |
785 | syslog(LOG_INFO|LOG_LOCAL0, $message); # information level, Local0 facility |
786 | |
787 | =over 4 |
788 | |
789 | =item B<Note> |
790 | |
791 | C<Sys::Syslog> version v0.07 and older passed the C<$message> as the |
792 | formatting string to C<sprintf()> even when no formatting arguments |
793 | were provided. If the code calling C<syslog()> might execute with |
794 | older versions of this module, make sure to call the function as |
795 | C<syslog($priority, "%s", $message)> instead of C<syslog($priority, |
796 | $message)>. This protects against hostile formatting sequences that |
797 | might show up if $message contains tainted data. |
798 | |
799 | =back |
800 | |
801 | |
802 | =item B<setlogmask($mask_priority)> |
803 | |
804 | Sets the log mask for the current process to C<$mask_priority> and |
805 | returns the old mask. If the mask argument is 0, the current log mask |
806 | is not modified. See L<"Levels"> for the list of available levels. |
807 | You can use the C<LOG_UPTO()> function to allow all levels up to a |
808 | given priority (but it only accept the numeric macros as arguments). |
809 | |
810 | B<Examples> |
811 | |
812 | Only log errors: |
813 | |
814 | setlogmask( LOG_MASK(LOG_ERR) ); |
815 | |
816 | Log everything except informational messages: |
817 | |
818 | setlogmask( ~(LOG_MASK(LOG_INFO)) ); |
819 | |
820 | Log critical messages, errors and warnings: |
821 | |
822 | setlogmask( LOG_MASK(LOG_CRIT) | LOG_MASK(LOG_ERR) | LOG_MASK(LOG_WARNING) ); |
823 | |
824 | Log all messages up to debug: |
825 | |
826 | setlogmask( LOG_UPTO(LOG_DEBUG) ); |
827 | |
828 | |
829 | =item B<setlogsock($sock_type)> |
830 | |
07b7e4bc |
831 | =item B<setlogsock($sock_type, $stream_location)> (added in Perl 5.004_02) |
89c3c464 |
832 | |
833 | Sets the socket type to be used for the next call to |
834 | C<openlog()> or C<syslog()> and returns true on success, |
4b035b3d |
835 | C<undef> on failure. The available mechanisms are: |
836 | |
837 | =over |
838 | |
839 | =item * |
840 | |
07b7e4bc |
841 | C<"native"> - use the native C functions from your C<syslog(3)> library |
842 | (added in C<Sys::Syslog> 0.15). |
4b035b3d |
843 | |
844 | =item * |
845 | |
846 | C<"tcp"> - connect to a TCP socket, on the C<syslog/tcp> or C<syslogng/tcp> |
847 | service. |
848 | |
849 | =item * |
850 | |
851 | C<"udp"> - connect to a UDP socket, on the C<syslog/udp> service. |
852 | |
853 | =item * |
854 | |
855 | C<"inet"> - connect to an INET socket, either TCP or UDP, tried in that order. |
856 | |
857 | =item * |
858 | |
859 | C<"unix"> - connect to a UNIX domain socket (in some systems a character |
860 | special device). The name of that socket is the second parameter or, if |
861 | you omit the second parameter, the value returned by the C<_PATH_LOG> macro |
862 | (if your system defines it), or F</dev/log> or F</dev/conslog>, whatever is |
863 | writable. |
864 | |
865 | =item * |
866 | |
867 | C<"stream"> - connect to the stream indicated by the pathname provided as |
868 | the optional second parameter, or, if omitted, to F</dev/conslog>. |
869 | For example Solaris and IRIX system may prefer C<"stream"> instead of C<"unix">. |
870 | |
871 | =item * |
872 | |
873 | C<"console"> - send messages directly to the console, as for the C<"cons"> |
874 | option of C<openlog()>. |
875 | |
876 | =back |
89c3c464 |
877 | |
878 | A reference to an array can also be passed as the first parameter. |
879 | When this calling method is used, the array should contain a list of |
4b035b3d |
880 | mechanisms which are attempted in order. |
89c3c464 |
881 | |
4b035b3d |
882 | The default is to try C<native>, C<tcp>, C<udp>, C<unix>, C<stream>, C<console>. |
89c3c464 |
883 | |
07b7e4bc |
884 | Giving an invalid value for C<$sock_type> will C<croak>. |
89c3c464 |
885 | |
4b035b3d |
886 | B<Examples> |
887 | |
888 | Select the UDP socket mechanism: |
889 | |
890 | setlogsock("udp"); |
891 | |
892 | Select the native, UDP socket then UNIX domain socket mechanisms: |
893 | |
894 | setlogsock(["native", "udp", "unix"]); |
895 | |
07b7e4bc |
896 | =over |
897 | |
898 | =item B<Note> |
899 | |
900 | Now that the "native" mechanism is supported by C<Sys::Syslog> and selected |
901 | by default, the use of the C<setlogsock()> function is discouraged because |
902 | other mechanisms are less portable across operating systems. Authors of |
903 | modules and programs that use this function, especially its cargo-cult form |
904 | C<setlogsock("unix")>, are advised to remove any occurence of it unless they |
905 | specifically want to use a given mechanism (like TCP or UDP to connect to |
906 | a remote host). |
907 | |
908 | =back |
89c3c464 |
909 | |
910 | =item B<closelog()> |
911 | |
4b035b3d |
912 | Closes the log file and returns true on success. |
89c3c464 |
913 | |
914 | =back |
915 | |
916 | |
917 | =head1 EXAMPLES |
918 | |
919 | openlog($program, 'cons,pid', 'user'); |
920 | syslog('info', '%s', 'this is another test'); |
921 | syslog('mail|warning', 'this is a better test: %d', time); |
922 | closelog(); |
5be1dfc7 |
923 | |
924 | syslog('debug', 'this is the last test'); |
cb63fe9d |
925 | |
926 | setlogsock('unix'); |
5be1dfc7 |
927 | openlog("$program $$", 'ndelay', 'user'); |
928 | syslog('notice', 'fooprogram: this is really done'); |
929 | |
cb63fe9d |
930 | setlogsock('inet'); |
5be1dfc7 |
931 | $! = 55; |
6e4ef777 |
932 | syslog('info', 'problem was %m'); # %m == $! in syslog(3) |
933 | |
934 | Log to UDP port on C<$remotehost> instead of logging locally: |
5be1dfc7 |
935 | |
476b65d9 |
936 | setlogsock('udp'); |
937 | $Sys::Syslog::host = $remotehost; |
938 | openlog($program, 'ndelay', 'user'); |
939 | syslog('info', 'something happened over here'); |
940 | |
8168e71f |
941 | |
942 | =head1 CONSTANTS |
943 | |
944 | =head2 Facilities |
945 | |
946 | =over 4 |
947 | |
948 | =item * |
949 | |
950 | C<LOG_AUTH> - security/authorization messages |
951 | |
952 | =item * |
953 | |
954 | C<LOG_AUTHPRIV> - security/authorization messages (private) |
955 | |
956 | =item * |
957 | |
4b035b3d |
958 | C<LOG_CRON> - clock daemons (B<cron> and B<at>) |
8168e71f |
959 | |
960 | =item * |
961 | |
962 | C<LOG_DAEMON> - system daemons without separate facility value |
963 | |
964 | =item * |
965 | |
4b035b3d |
966 | C<LOG_FTP> - FTP daemon |
8168e71f |
967 | |
968 | =item * |
969 | |
970 | C<LOG_KERN> - kernel messages |
971 | |
972 | =item * |
973 | |
4b035b3d |
974 | C<LOG_INSTALL> - installer subsystem |
975 | |
976 | =item * |
977 | |
978 | C<LOG_LAUNCHD> - launchd - general bootstrap daemon (Mac OS X) |
979 | |
980 | =item * |
981 | |
8168e71f |
982 | C<LOG_LOCAL0> through C<LOG_LOCAL7> - reserved for local use |
983 | |
984 | =item * |
985 | |
986 | C<LOG_LPR> - line printer subsystem |
987 | |
988 | =item * |
989 | |
990 | C<LOG_MAIL> - mail subsystem |
991 | |
992 | =item * |
993 | |
4b035b3d |
994 | C<LOG_NETINFO> - NetInfo subsystem (Mac OS X) |
995 | |
996 | =item * |
997 | |
8168e71f |
998 | C<LOG_NEWS> - USENET news subsystem |
999 | |
1000 | =item * |
1001 | |
4b035b3d |
1002 | C<LOG_RAS> - Remote Access Service (VPN / PPP) (Mac OS X) |
1003 | |
1004 | =item * |
1005 | |
1006 | C<LOG_REMOTEAUTH> - remote authentication/authorization (Mac OS X) |
1007 | |
1008 | =item * |
1009 | |
8168e71f |
1010 | C<LOG_SYSLOG> - messages generated internally by B<syslogd> |
1011 | |
1012 | =item * |
1013 | |
1014 | C<LOG_USER> (default) - generic user-level messages |
1015 | |
1016 | =item * |
1017 | |
1018 | C<LOG_UUCP> - UUCP subsystem |
1019 | |
1020 | =back |
1021 | |
1022 | |
1023 | =head2 Levels |
1024 | |
1025 | =over 4 |
1026 | |
1027 | =item * |
1028 | |
1029 | C<LOG_EMERG> - system is unusable |
1030 | |
1031 | =item * |
1032 | |
1033 | C<LOG_ALERT> - action must be taken immediately |
1034 | |
1035 | =item * |
1036 | |
1037 | C<LOG_CRIT> - critical conditions |
1038 | |
1039 | =item * |
1040 | |
942974c1 |
1041 | C<LOG_ERR> - error conditions |
8168e71f |
1042 | |
1043 | =item * |
1044 | |
1045 | C<LOG_WARNING> - warning conditions |
1046 | |
1047 | =item * |
1048 | |
1049 | C<LOG_NOTICE> - normal, but significant, condition |
1050 | |
1051 | =item * |
1052 | |
1053 | C<LOG_INFO> - informational message |
1054 | |
1055 | =item * |
1056 | |
1057 | C<LOG_DEBUG> - debug-level message |
1058 | |
1059 | =back |
1060 | |
1061 | |
1062 | =head1 DIAGNOSTICS |
1063 | |
1064 | =over 4 |
1065 | |
1066 | =item Invalid argument passed to setlogsock |
1067 | |
1068 | B<(F)> You gave C<setlogsock()> an invalid value for C<$sock_type>. |
1069 | |
1070 | =item no connection to syslog available |
1071 | |
1072 | B<(F)> C<syslog()> failed to connect to the specified socket. |
1073 | |
1074 | =item stream passed to setlogsock, but %s is not writable |
1075 | |
942974c1 |
1076 | B<(W)> You asked C<setlogsock()> to use a stream socket, but the given |
8168e71f |
1077 | path is not writable. |
1078 | |
1079 | =item stream passed to setlogsock, but could not find any device |
1080 | |
942974c1 |
1081 | B<(W)> You asked C<setlogsock()> to use a stream socket, but didn't |
8168e71f |
1082 | provide a path, and C<Sys::Syslog> was unable to find an appropriate one. |
1083 | |
1084 | =item tcp passed to setlogsock, but tcp service unavailable |
1085 | |
942974c1 |
1086 | B<(W)> You asked C<setlogsock()> to use a TCP socket, but the service |
8168e71f |
1087 | is not available on the system. |
1088 | |
1089 | =item syslog: expecting argument %s |
1090 | |
1091 | B<(F)> You forgot to give C<syslog()> the indicated argument. |
1092 | |
1093 | =item syslog: invalid level/facility: %s |
1094 | |
6e4ef777 |
1095 | B<(F)> You specified an invalid level or facility. |
8168e71f |
1096 | |
1097 | =item syslog: too many levels given: %s |
1098 | |
1099 | B<(F)> You specified too many levels. |
1100 | |
1101 | =item syslog: too many facilities given: %s |
1102 | |
1103 | B<(F)> You specified too many facilities. |
1104 | |
1105 | =item syslog: level must be given |
1106 | |
1107 | B<(F)> You forgot to specify a level. |
1108 | |
1109 | =item udp passed to setlogsock, but udp service unavailable |
1110 | |
942974c1 |
1111 | B<(W)> You asked C<setlogsock()> to use a UDP socket, but the service |
8168e71f |
1112 | is not available on the system. |
1113 | |
1114 | =item unix passed to setlogsock, but path not available |
1115 | |
942974c1 |
1116 | B<(W)> You asked C<setlogsock()> to use a UNIX socket, but C<Sys::Syslog> |
8168e71f |
1117 | was unable to find an appropriate an appropriate device. |
1118 | |
1119 | =back |
1120 | |
1121 | |
5be1dfc7 |
1122 | =head1 SEE ALSO |
1123 | |
1124 | L<syslog(3)> |
1125 | |
6e4ef777 |
1126 | SUSv3 issue 6, IEEE Std 1003.1, 2004 edition, |
1127 | L<http://www.opengroup.org/onlinepubs/000095399/basedefs/syslog.h.html> |
1128 | |
1129 | GNU C Library documentation on syslog, |
1130 | L<http://www.gnu.org/software/libc/manual/html_node/Syslog.html> |
1131 | |
1132 | Solaris 10 documentation on syslog, |
1133 | L<http://docs.sun.com/app/docs/doc/816-5168/6mbb3hruo?a=view> |
1134 | |
1135 | AIX 5L 5.3 documentation on syslog, |
1136 | L<http://publib.boulder.ibm.com/infocenter/pseries/v5r3/index.jsp?topic=/com.ibm.aix.doc/libs/basetrf2/syslog.htm> |
1137 | |
1138 | HP-UX 11i documentation on syslog, |
1139 | L<http://docs.hp.com/en/B9106-90010/syslog.3C.html> |
1140 | |
1141 | Tru64 5.1 documentation on syslog, |
1142 | L<http://h30097.www3.hp.com/docs/base_doc/DOCUMENTATION/V51_HTML/MAN/MAN3/0193____.HTM> |
1143 | |
1144 | Stratus VOS 15.1, |
1145 | L<http://stratadoc.stratus.com/vos/15.1.1/r502-01/wwhelp/wwhimpl/js/html/wwhelp.htm?context=r502-01&file=ch5r502-01bi.html> |
1146 | |
1147 | I<RFC 3164 - The BSD syslog Protocol>, L<http://www.faqs.org/rfcs/rfc3164.html> |
1148 | -- Please note that this is an informational RFC, and therefore does not |
1149 | specify a standard of any kind. |
1150 | |
1151 | I<RFC 3195 - Reliable Delivery for syslog>, L<http://www.faqs.org/rfcs/rfc3195.html> |
1152 | |
04f98b29 |
1153 | I<Syslogging with Perl>, L<http://lexington.pm.org/meetings/022001.html> |
1154 | |
8168e71f |
1155 | |
6e4ef777 |
1156 | =head1 AUTHORS |
5be1dfc7 |
1157 | |
150b260b |
1158 | Tom Christiansen E<lt>F<tchrist@perl.com>E<gt> and Larry Wall |
1159 | E<lt>F<larry@wall.org>E<gt>. |
1160 | |
1161 | UNIX domain sockets added by Sean Robinson |
23642f4b |
1162 | E<lt>F<robinson_s@sc.maricopa.edu>E<gt> with support from Tim Bunce |
8168e71f |
1163 | E<lt>F<Tim.Bunce@ig.co.uk>E<gt> and the C<perl5-porters> mailing list. |
150b260b |
1164 | |
1165 | Dependency on F<syslog.ph> replaced with XS code by Tom Hughes |
1166 | E<lt>F<tom@compton.nu>E<gt>. |
5be1dfc7 |
1167 | |
8168e71f |
1168 | Code for C<constant()>s regenerated by Nicholas Clark E<lt>F<nick@ccl4.org>E<gt>. |
23642f4b |
1169 | |
1170 | Failover to different communication modes by Nick Williams |
1171 | E<lt>F<Nick.Williams@morganstanley.com>E<gt>. |
b903fcff |
1172 | |
89c3c464 |
1173 | XS code for using native C functions borrowed from C<L<Unix::Syslog>>, |
1174 | written by Marcus Harnisch E<lt>F<marcus.harnisch@gmx.net>E<gt>. |
1175 | |
8168e71f |
1176 | Extracted from core distribution for publishing on the CPAN by |
1177 | SE<eacute>bastien Aperghis-Tramoni E<lt>sebastien@aperghis.netE<gt>. |
1178 | |
1179 | |
1180 | =head1 BUGS |
1181 | |
1182 | Please report any bugs or feature requests to |
1183 | C<bug-sys-syslog at rt.cpan.org>, or through the web interface at |
1184 | L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Sys-Syslog>. |
1185 | I will be notified, and then you'll automatically be notified of progress on |
1186 | your bug as I make changes. |
1187 | |
1188 | |
1189 | =head1 SUPPORT |
1190 | |
1191 | You can find documentation for this module with the perldoc command. |
1192 | |
1193 | perldoc Sys::Syslog |
1194 | |
1195 | You can also look for information at: |
1196 | |
1197 | =over 4 |
1198 | |
1199 | =item * AnnoCPAN: Annotated CPAN documentation |
1200 | |
1201 | L<http://annocpan.org/dist/Sys-Syslog> |
1202 | |
1203 | =item * CPAN Ratings |
1204 | |
1205 | L<http://cpanratings.perl.org/d/Sys-Syslog> |
1206 | |
1207 | =item * RT: CPAN's request tracker |
1208 | |
1209 | L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Sys-Syslog> |
1210 | |
1211 | =item * Search CPAN |
1212 | |
6e4ef777 |
1213 | L<http://search.cpan.org/dist/Sys-Syslog/> |
1214 | |
1215 | =item * Kobes' CPAN Search |
1216 | |
1217 | L<http://cpan.uwinnipeg.ca/dist/Sys-Syslog> |
1218 | |
1219 | =item * Perl Documentation |
1220 | |
1221 | L<http://perldoc.perl.org/Sys/Syslog.html> |
8168e71f |
1222 | |
1223 | =back |
1224 | |
1225 | |
1226 | =head1 LICENSE |
1227 | |
1228 | This program is free software; you can redistribute it and/or modify it |
1229 | under the same terms as Perl itself. |
1230 | |
5be1dfc7 |
1231 | =cut |