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1 | package Sys::Syslog; |
2 | require 5.000; |
3 | require Exporter; |
8ce86de8 |
4 | require DynaLoader; |
a0d0e21e |
5 | use Carp; |
6 | |
8ce86de8 |
7 | @ISA = qw(Exporter DynaLoader); |
a0d0e21e |
8 | @EXPORT = qw(openlog closelog setlogmask syslog); |
3ffabb8c |
9 | @EXPORT_OK = qw(setlogsock); |
b903fcff |
10 | $VERSION = '0.02'; |
a0d0e21e |
11 | |
23642f4b |
12 | # it would be nice to try stream/unix first, since that will be |
13 | # most efficient. However streams are dodgy - see _syslog_send_stream |
14 | #my @connectMethods = ( 'stream', 'unix', 'tcp', 'udp' ); |
15 | my @connectMethods = ( 'tcp', 'udp', 'unix', 'stream', 'console' ); |
16 | my @defaultMethods = @connectMethods; |
17 | my $syslog_path = undef; |
18 | my $transmit_ok = 0; |
19 | my $current_proto = undef; |
20 | my $failed = undef; |
21 | my $fail_time = undef; |
22 | |
37120919 |
23 | use Socket; |
55497cff |
24 | use Sys::Hostname; |
37120919 |
25 | |
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26 | # adapted from syslog.pl |
a0d0e21e |
27 | # |
5be1dfc7 |
28 | # Tom Christiansen <tchrist@convex.com> |
a0d0e21e |
29 | # modified to use sockets by Larry Wall <lwall@jpl-devvax.jpl.nasa.gov> |
30 | # NOTE: openlog now takes three arguments, just like openlog(3) |
3ffabb8c |
31 | # Modified to add UNIX domain sockets by Sean Robinson <robinson_s@sc.maricopa.edu> |
32 | # with support from Tim Bunce <Tim.Bunce@ig.co.uk> and the perl5-porters mailing list |
8ce86de8 |
33 | # Modified to use an XS backend instead of syslog.ph by Tom Hughes <tom@compton.nu> |
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34 | |
5be1dfc7 |
35 | =head1 NAME |
36 | |
37 | Sys::Syslog, openlog, closelog, setlogmask, syslog - Perl interface to the UNIX syslog(3) calls |
38 | |
39 | =head1 SYNOPSIS |
40 | |
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41 | use Sys::Syslog; # all except setlogsock, or: |
42 | use Sys::Syslog qw(:DEFAULT setlogsock); # default set, plus setlogsock |
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43 | |
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44 | setlogsock $sock_type; |
5be1dfc7 |
45 | openlog $ident, $logopt, $facility; |
2eae817d |
46 | syslog $priority, $format, @args; |
5be1dfc7 |
47 | $oldmask = setlogmask $mask_priority; |
48 | closelog; |
49 | |
50 | =head1 DESCRIPTION |
51 | |
52 | Sys::Syslog is an interface to the UNIX C<syslog(3)> program. |
53 | Call C<syslog()> with a string priority and a list of C<printf()> args |
54 | just like C<syslog(3)>. |
55 | |
56 | Syslog provides the functions: |
57 | |
bbc7dcd2 |
58 | =over 4 |
5be1dfc7 |
59 | |
60 | =item openlog $ident, $logopt, $facility |
61 | |
23642f4b |
62 | I<$ident> is prepended to every message. I<$logopt> contains zero or |
63 | more of the words I<pid>, I<ndelay>, I<nowait>. The cons option is |
64 | ignored, since the failover mechanism will drop down to the console |
65 | automatically if all other media fail. I<$facility> specifies the |
66 | part of the system |
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67 | |
2eae817d |
68 | =item syslog $priority, $format, @args |
5be1dfc7 |
69 | |
2eae817d |
70 | If I<$priority> permits, logs I<($format, @args)> |
5be1dfc7 |
71 | printed as by C<printf(3V)>, with the addition that I<%m> |
72 | is replaced with C<"$!"> (the latest error message). |
73 | |
74 | =item setlogmask $mask_priority |
75 | |
76 | Sets log mask I<$mask_priority> and returns the old mask. |
77 | |
23642f4b |
78 | =item setlogsock $sock_type [$stream_location] (added in 5.004_02) |
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79 | |
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80 | Sets the socket type to be used for the next call to |
3ffabb8c |
81 | C<openlog()> or C<syslog()> and returns TRUE on success, |
82 | undef on failure. |
83 | |
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84 | A value of 'unix' will connect to the UNIX domain socket returned by |
85 | the C<_PATH_LOG> macro (if your system defines it) in F<syslog.ph>. A |
86 | value of 'stream' will connect to the stream indicated by the pathname |
87 | provided as the optional second parameter. A value of 'inet' will |
88 | connect to an INET socket (either tcp or udp, tried in that order) |
89 | returned by getservbyname(). 'tcp' and 'udp' can also be given as |
90 | values. The value 'console' will send messages directly to the |
91 | console, as for the 'cons' option in the logopts in openlog(). |
92 | |
93 | A reference to an array can also be passed as the first parameter. |
94 | When this calling method is used, the array should contain a list of |
95 | sock_types which are attempted in order. |
cb63fe9d |
96 | |
23642f4b |
97 | The default is to try tcp, udp, unix, stream, console. |
98 | |
99 | Giving an invalid value for sock_type will croak. |
cb63fe9d |
100 | |
5be1dfc7 |
101 | =item closelog |
102 | |
103 | Closes the log file. |
104 | |
105 | =back |
106 | |
107 | Note that C<openlog> now takes three arguments, just like C<openlog(3)>. |
108 | |
109 | =head1 EXAMPLES |
110 | |
111 | openlog($program, 'cons,pid', 'user'); |
112 | syslog('info', 'this is another test'); |
113 | syslog('mail|warning', 'this is a better test: %d', time); |
114 | closelog(); |
115 | |
116 | syslog('debug', 'this is the last test'); |
cb63fe9d |
117 | |
118 | setlogsock('unix'); |
5be1dfc7 |
119 | openlog("$program $$", 'ndelay', 'user'); |
120 | syslog('notice', 'fooprogram: this is really done'); |
121 | |
cb63fe9d |
122 | setlogsock('inet'); |
5be1dfc7 |
123 | $! = 55; |
124 | syslog('info', 'problem was %m'); # %m == $! in syslog(3) |
125 | |
5be1dfc7 |
126 | =head1 SEE ALSO |
127 | |
128 | L<syslog(3)> |
129 | |
130 | =head1 AUTHOR |
131 | |
150b260b |
132 | Tom Christiansen E<lt>F<tchrist@perl.com>E<gt> and Larry Wall |
133 | E<lt>F<larry@wall.org>E<gt>. |
134 | |
135 | UNIX domain sockets added by Sean Robinson |
23642f4b |
136 | E<lt>F<robinson_s@sc.maricopa.edu>E<gt> with support from Tim Bunce |
137 | E<lit>F<Tim.Bunce@ig.co.uk>E<gt> and the perl5-porters mailing list. |
150b260b |
138 | |
139 | Dependency on F<syslog.ph> replaced with XS code by Tom Hughes |
140 | E<lt>F<tom@compton.nu>E<gt>. |
5be1dfc7 |
141 | |
23642f4b |
142 | Code for constant()s regenerated by Nicholas Clark E<lt>F<nick@ccl4.org>E<gt>. |
143 | |
144 | Failover to different communication modes by Nick Williams |
145 | E<lt>F<Nick.Williams@morganstanley.com>E<gt>. |
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146 | |
5be1dfc7 |
147 | =cut |
a0d0e21e |
148 | |
8ce86de8 |
149 | sub AUTOLOAD { |
150 | # This AUTOLOAD is used to 'autoload' constants from the constant() |
151 | # XS function. |
23642f4b |
152 | |
8ce86de8 |
153 | my $constname; |
154 | our $AUTOLOAD; |
155 | ($constname = $AUTOLOAD) =~ s/.*:://; |
b903fcff |
156 | croak "&Sys::Syslog::constant not defined" if $constname eq 'constant'; |
157 | my ($error, $val) = constant($constname); |
158 | if ($error) { |
159 | croak $error; |
8ce86de8 |
160 | } |
161 | *$AUTOLOAD = sub { $val }; |
162 | goto &$AUTOLOAD; |
163 | } |
164 | |
165 | bootstrap Sys::Syslog $VERSION; |
a0d0e21e |
166 | |
167 | $maskpri = &LOG_UPTO(&LOG_DEBUG); |
168 | |
169 | sub openlog { |
170 | ($ident, $logopt, $facility) = @_; # package vars |
171 | $lo_pid = $logopt =~ /\bpid\b/; |
172 | $lo_ndelay = $logopt =~ /\bndelay\b/; |
a0d0e21e |
173 | $lo_nowait = $logopt =~ /\bnowait\b/; |
a8710ca1 |
174 | return 1 unless $lo_ndelay; |
175 | &connect; |
a0d0e21e |
176 | } |
177 | |
178 | sub closelog { |
179 | $facility = $ident = ''; |
180 | &disconnect; |
181 | } |
182 | |
183 | sub setlogmask { |
184 | local($oldmask) = $maskpri; |
185 | $maskpri = shift; |
186 | $oldmask; |
187 | } |
188 | |
cb63fe9d |
189 | sub setlogsock { |
190 | local($setsock) = shift; |
23642f4b |
191 | $syslog_path = shift; |
3ffabb8c |
192 | &disconnect if $connected; |
23642f4b |
193 | $transmit_ok = 0; |
194 | @fallbackMethods = (); |
195 | @connectMethods = @defaultMethods; |
196 | if (ref $setsock eq 'ARRAY') { |
197 | @connectMethods = @$setsock; |
198 | } elsif (lc($setsock) eq 'stream') { |
199 | $syslog_path = '/dev/log' unless($syslog_path); |
200 | if (!-w $syslog_path) { |
201 | carp "stream passed to setlogsock, but $syslog_path is not writable"; |
202 | return undef; |
203 | } else { |
204 | @connectMethods = ( 'stream' ); |
205 | } |
206 | } elsif (lc($setsock) eq 'unix') { |
207 | if (length _PATH_LOG() && !defined $syslog_path) { |
208 | $syslog_path = _PATH_LOG(); |
209 | @connectMethods = ( 'unix' ); |
3ffabb8c |
210 | } else { |
23642f4b |
211 | carp 'unix passed to setlogsock, but path not available'; |
212 | return undef; |
3ffabb8c |
213 | } |
23642f4b |
214 | } elsif (lc($setsock) eq 'tcp') { |
215 | if (getservbyname('syslog', 'tcp') || getservbyname('syslogng', 'tcp')) { |
216 | @connectMethods = ( 'tcp' ); |
217 | } else { |
218 | carp "tcp passed to setlogsock, but tcp service unavailable"; |
219 | return undef; |
220 | } |
221 | } elsif (lc($setsock) eq 'udp') { |
222 | if (getservbyname('syslog', 'udp')) { |
223 | @connectMethods = ( 'udp' ); |
224 | } else { |
225 | carp "udp passed to setlogsock, but udp service unavailable"; |
226 | return undef; |
227 | } |
cb63fe9d |
228 | } elsif (lc($setsock) eq 'inet') { |
23642f4b |
229 | @connectMethods = ( 'tcp', 'udp' ); |
230 | } elsif (lc($setsock) eq 'console') { |
231 | @connectMethods = ( 'console' ); |
cb63fe9d |
232 | } else { |
23642f4b |
233 | carp "Invalid argument passed to setlogsock; must be 'stream', 'unix', 'tcp', 'udp' or 'inet'"; |
cb63fe9d |
234 | } |
f8b75b0c |
235 | return 1; |
cb63fe9d |
236 | } |
237 | |
a0d0e21e |
238 | sub syslog { |
239 | local($priority) = shift; |
240 | local($mask) = shift; |
241 | local($message, $whoami); |
242 | local(@words, $num, $numpri, $numfac, $sum); |
243 | local($facility) = $facility; # may need to change temporarily. |
244 | |
245 | croak "syslog: expected both priority and mask" unless $mask && $priority; |
246 | |
247 | @words = split(/\W+/, $priority, 2);# Allow "level" or "level|facility". |
248 | undef $numpri; |
249 | undef $numfac; |
250 | foreach (@words) { |
251 | $num = &xlate($_); # Translate word to number. |
252 | if (/^kern$/ || $num < 0) { |
253 | croak "syslog: invalid level/facility: $_"; |
254 | } |
255 | elsif ($num <= &LOG_PRIMASK) { |
256 | croak "syslog: too many levels given: $_" if defined($numpri); |
257 | $numpri = $num; |
258 | return 0 unless &LOG_MASK($numpri) & $maskpri; |
259 | } |
260 | else { |
261 | croak "syslog: too many facilities given: $_" if defined($numfac); |
262 | $facility = $_; |
263 | $numfac = $num; |
264 | } |
265 | } |
266 | |
267 | croak "syslog: level must be given" unless defined($numpri); |
268 | |
269 | if (!defined($numfac)) { # Facility not specified in this call. |
270 | $facility = 'user' unless $facility; |
271 | $numfac = &xlate($facility); |
272 | } |
273 | |
274 | &connect unless $connected; |
275 | |
276 | $whoami = $ident; |
277 | |
5dad0344 |
278 | if (!$whoami && $mask =~ /^(\S.*?):\s?(.*)/) { |
a0d0e21e |
279 | $whoami = $1; |
280 | $mask = $2; |
281 | } |
282 | |
283 | unless ($whoami) { |
284 | ($whoami = getlogin) || |
285 | ($whoami = getpwuid($<)) || |
286 | ($whoami = 'syslog'); |
287 | } |
288 | |
289 | $whoami .= "[$$]" if $lo_pid; |
290 | |
291 | $mask =~ s/%m/$!/g; |
292 | $mask .= "\n" unless $mask =~ /\n$/; |
293 | $message = sprintf ($mask, @_); |
294 | |
295 | $sum = $numpri + $numfac; |
23642f4b |
296 | my $buf = "<$sum>$whoami: $message\0"; |
297 | |
298 | # it's possible that we'll get an error from sending |
299 | # (e.g. if method is UDP and there is no UDP listener, |
300 | # then we'll get ECONNREFUSED on the send). So what we |
301 | # want to do at this point is to fallback onto a different |
302 | # connection method. |
303 | while (scalar @fallbackMethods || $syslog_send) { |
304 | if ($failed && (time - $fail_time) > 60) { |
305 | # it's been a while... maybe things have been fixed |
306 | @fallbackMethods = (); |
307 | disconnect(); |
308 | $transmit_ok = 0; # make it look like a fresh attempt |
309 | &connect; |
310 | } |
311 | if ($connected && !connection_ok()) { |
312 | # Something was OK, but has now broken. Remember coz we'll |
313 | # want to go back to what used to be OK. |
314 | $failed = $current_proto unless $failed; |
315 | $fail_time = time; |
316 | disconnect(); |
317 | } |
318 | &connect unless $connected; |
319 | $failed = undef if ($current_proto eq $failed); |
320 | if ($syslog_send) { |
321 | if (&{$syslog_send}($buf)) { |
322 | $transmit_ok++; |
323 | return 1; |
a0d0e21e |
324 | } |
23642f4b |
325 | # typically doesn't happen, since errors are rare from write(). |
326 | disconnect(); |
327 | } |
328 | } |
329 | # could not send, could not fallback onto a working |
330 | # connection method. Lose. |
331 | return 0; |
332 | } |
333 | |
334 | sub _syslog_send_console { |
335 | my ($buf) = @_; |
336 | chop($buf); # delete the NUL from the end |
337 | # The console print is a method which could block |
338 | # so we do it in a child process and always return success |
339 | # to the caller. |
340 | if (my $pid = fork) { |
341 | if ($lo_nowait) { |
342 | return 1; |
343 | } else { |
344 | if (waitpid($pid, 0) >= 0) { |
345 | return ($? >> 8); |
346 | } else { |
347 | # it's possible that the caller has other |
348 | # plans for SIGCHLD, so let's not interfere |
349 | return 1; |
a0d0e21e |
350 | } |
351 | } |
23642f4b |
352 | } else { |
353 | if (open(CONS, ">/dev/console")) { |
354 | my $ret = print CONS $buf . "\r"; |
355 | exit ($ret) if defined $pid; |
356 | close CONS; |
357 | } |
358 | exit if defined $pid; |
a0d0e21e |
359 | } |
360 | } |
361 | |
23642f4b |
362 | sub _syslog_send_stream { |
363 | my ($buf) = @_; |
364 | # XXX: this only works if the OS stream implementation makes a write |
365 | # look like a putmsg() with simple header. For instance it works on |
366 | # Solaris 8 but not Solaris 7. |
367 | # To be correct, it should use a STREAMS API, but perl doesn't have one. |
368 | return syswrite(SYSLOG, $buf, length($buf)); |
369 | } |
370 | sub _syslog_send_socket { |
371 | my ($buf) = @_; |
372 | return syswrite(SYSLOG, $buf, length($buf)); |
373 | #return send(SYSLOG, $buf, 0); |
374 | } |
375 | |
a0d0e21e |
376 | sub xlate { |
377 | local($name) = @_; |
55497cff |
378 | $name = uc $name; |
a0d0e21e |
379 | $name = "LOG_$name" unless $name =~ /^LOG_/; |
748a9306 |
380 | $name = "Sys::Syslog::$name"; |
2c3b42a1 |
381 | # Can't have just eval { &$name } || -1 because some LOG_XXX may be zero. |
382 | my $value = eval { &$name }; |
383 | defined $value ? $value : -1; |
a0d0e21e |
384 | } |
385 | |
386 | sub connect { |
23642f4b |
387 | @fallbackMethods = @connectMethods unless (scalar @fallbackMethods); |
388 | if ($transmit_ok && $current_proto) { |
389 | # Retry what we were on, because it's worked in the past. |
390 | unshift(@fallbackMethods, $current_proto); |
391 | } |
392 | $connected = 0; |
393 | my @errs = (); |
394 | my $proto = undef; |
395 | while ($proto = shift(@fallbackMethods)) { |
396 | my $fn = "connect_$proto"; |
397 | $connected = &$fn(\@errs) unless (!defined &$fn); |
398 | last if ($connected); |
399 | } |
400 | |
401 | $transmit_ok = 0; |
402 | if ($connected) { |
403 | $current_proto = $proto; |
404 | local($old) = select(SYSLOG); $| = 1; select($old); |
405 | } else { |
406 | @fallbackMethods = (); |
407 | foreach my $err (@errs) { |
408 | carp $err; |
409 | } |
410 | croak "no connection to syslog available"; |
411 | } |
412 | } |
413 | |
414 | sub connect_tcp { |
415 | my ($errs) = @_; |
416 | unless ($host) { |
417 | require Sys::Hostname; |
418 | my($host_uniq) = Sys::Hostname::hostname(); |
419 | ($host) = $host_uniq =~ /([A-Za-z0-9_.-]+)/; # allow FQDN (inc _) |
420 | } |
421 | my $tcp = getprotobyname('tcp'); |
422 | if (!defined $tcp) { |
423 | push(@{$errs}, "getprotobyname failed for tcp"); |
424 | return 0; |
425 | } |
426 | my $syslog = getservbyname('syslog','tcp'); |
427 | $syslog = getservbyname('syslogng','tcp') unless (defined $syslog); |
428 | if (!defined $syslog) { |
429 | push(@{$errs}, "getservbyname failed for tcp"); |
430 | return 0; |
431 | } |
432 | |
433 | my $this = sockaddr_in($syslog, INADDR_ANY); |
434 | my $that = sockaddr_in($syslog, inet_aton($host)); |
435 | if (!$that) { |
436 | push(@{$errs}, "can't lookup $host"); |
437 | return 0; |
438 | } |
439 | if (!socket(SYSLOG,AF_INET,SOCK_STREAM,$tcp)) { |
440 | push(@{$errs}, "tcp socket: $!"); |
441 | return 0; |
442 | } |
443 | setsockopt(SYSLOG, SOL_SOCKET, SO_KEEPALIVE, 1); |
444 | setsockopt(SYSLOG, IPPROTO_TCP, TCP_NODELAY, 1); |
445 | if (!connect(SYSLOG,$that)) { |
446 | push(@{$errs}, "tcp connect: $!"); |
447 | return 0; |
448 | } |
449 | $syslog_send = \&_syslog_send_socket; |
450 | return 1; |
451 | } |
452 | |
453 | sub connect_udp { |
454 | my ($errs) = @_; |
4fc7577b |
455 | unless ($host) { |
456 | require Sys::Hostname; |
2eae817d |
457 | my($host_uniq) = Sys::Hostname::hostname(); |
3e3baf6d |
458 | ($host) = $host_uniq =~ /([A-Za-z0-9_.-]+)/; # allow FQDN (inc _) |
4fc7577b |
459 | } |
23642f4b |
460 | my $udp = getprotobyname('udp'); |
461 | if (!defined $udp) { |
462 | push(@{$errs}, "getprotobyname failed for udp"); |
463 | return 0; |
464 | } |
465 | my $syslog = getservbyname('syslog','udp'); |
466 | if (!defined $syslog) { |
467 | push(@{$errs}, "getservbyname failed for udp"); |
468 | return 0; |
469 | } |
470 | my $this = sockaddr_in($syslog, INADDR_ANY); |
471 | my $that = sockaddr_in($syslog, inet_aton($host)); |
472 | if (!$that) { |
473 | push(@{$errs}, "can't lookup $host"); |
474 | return 0; |
475 | } |
476 | if (!socket(SYSLOG,AF_INET,SOCK_DGRAM,$udp)) { |
477 | push(@{$errs}, "udp socket: $!"); |
478 | return 0; |
479 | } |
480 | if (!connect(SYSLOG,$that)) { |
481 | push(@{$errs}, "udp connect: $!"); |
482 | return 0; |
483 | } |
484 | # We want to check that the UDP connect worked. However the only |
485 | # way to do that is to send a message and see if an ICMP is returned |
486 | _syslog_send_socket(""); |
487 | if (!connection_ok()) { |
488 | push(@{$errs}, "udp connect: nobody listening"); |
489 | return 0; |
490 | } |
491 | $syslog_send = \&_syslog_send_socket; |
492 | return 1; |
493 | } |
494 | |
495 | sub connect_stream { |
496 | my ($errs) = @_; |
497 | # might want syslog_path to be variable based on syslog.h (if only |
498 | # it were in there!) |
499 | $syslog_path = '/dev/conslog'; |
500 | if (!-w $syslog_path) { |
501 | push(@{$errs}, "stream $syslog_path is not writable"); |
502 | return 0; |
503 | } |
504 | if (!open(SYSLOG, ">" . $syslog_path)) { |
505 | push(@{$errs}, "stream can't open $syslog_path: $!"); |
506 | return 0; |
507 | } |
508 | $syslog_send = \&_syslog_send_stream; |
509 | return 1; |
510 | } |
511 | |
512 | sub connect_unix { |
513 | my ($errs) = @_; |
514 | if (length _PATH_LOG()) { |
515 | $syslog_path = _PATH_LOG(); |
cb63fe9d |
516 | } else { |
23642f4b |
517 | push(@{$errs}, "_PATH_LOG not available in syslog.h"); |
518 | return 0; |
519 | } |
520 | my $that = sockaddr_un($syslog_path); |
521 | if (!$that) { |
522 | push(@{$errs}, "can't locate $syslog_path"); |
523 | return 0; |
524 | } |
525 | if (!socket(SYSLOG,AF_UNIX,SOCK_STREAM,0)) { |
526 | push(@{$errs}, "unix stream socket: $!"); |
527 | return 0; |
528 | } |
529 | if (!connect(SYSLOG,$that)) { |
530 | if (!socket(SYSLOG,AF_UNIX,SOCK_DGRAM,0)) { |
531 | push(@{$errs}, "unix dgram socket: $!"); |
532 | return 0; |
533 | } |
3ffabb8c |
534 | if (!connect(SYSLOG,$that)) { |
23642f4b |
535 | push(@{$errs}, "unix dgram connect: $!"); |
536 | return 0; |
537 | } |
cb63fe9d |
538 | } |
23642f4b |
539 | $syslog_send = \&_syslog_send_socket; |
540 | return 1; |
541 | } |
542 | |
543 | sub connect_console { |
544 | my ($errs) = @_; |
545 | if (!-w '/dev/console') { |
546 | push(@{$errs}, "console is not writable"); |
547 | return 0; |
548 | } |
549 | $syslog_send = \&_syslog_send_console; |
550 | return 1; |
551 | } |
552 | |
553 | # to test if the connection is still good, we need to check if any |
554 | # errors are present on the connection. The errors will not be raised |
555 | # by a write. Instead, sockets are made readable and the next read |
556 | # would cause the error to be returned. Unfortunately the syslog |
557 | # 'protocol' never provides anything for us to read. But with |
558 | # judicious use of select(), we can see if it would be readable... |
559 | sub connection_ok { |
560 | return 1 if ($current_proto eq 'console'); |
561 | my $rin = ''; |
562 | vec($rin, fileno(SYSLOG), 1) = 1; |
563 | my $ret = select $rin, undef, $rin, 0; |
564 | return ($ret ? 0 : 1); |
a0d0e21e |
565 | } |
566 | |
567 | sub disconnect { |
568 | close SYSLOG; |
569 | $connected = 0; |
23642f4b |
570 | $syslog_send = undef; |
a0d0e21e |
571 | } |
572 | |
573 | 1; |