5 # Revision 4.0.1.1 92/06/08 13:48:05 lwall
6 # patch20: new warning for ambiguous use of unary operators
8 # Revision 4.0 91/03/20 01:26:24 lwall
11 # Revision 3.0.1.4 90/11/10 01:41:11 lwall
12 # patch38: syslog.pl was referencing an absolute path
14 # Revision 3.0.1.3 90/10/15 17:42:18 lwall
15 # patch29: various portability fixes
17 # Revision 3.0.1.1 90/08/09 03:57:17 lwall
18 # patch19: Initial revision
20 # Revision 1.2 90/06/11 18:45:30 18:45:30 root ()
21 # - Changed 'warn' to 'mail|warning' in test call (to give example of
22 # facility specification, and because 'warn' didn't work on HP-UX).
23 # - Fixed typo in &openlog ("ncons" should be "cons").
24 # - Added (package-global) $maskpri, and &setlogmask.
26 # - put argument test ahead of &connect (why waste cycles?),
27 # - allowed facility to be specified in &syslog's first arg (temporarily
28 # overrides any $facility set in &openlog), just as in syslog(3C),
29 # - do a return 0 when bit for $numpri not set in log mask (see syslog(3C)),
30 # - changed $whoami code to use getlogin, getpwuid($<) and 'syslog'
31 # (in that order) when $ident is null,
32 # - made PID logging consistent with syslog(3C) and subject to $lo_pid only,
33 # - fixed typo in "print CONS" statement ($<facility should be <$facility).
34 # - changed \n to \r in print CONS (\r is useful, $message already has a \n).
35 # - Changed &xlate to return -1 for an unknown name, instead of croaking.
38 # tom christiansen <tchrist@convex.com>
39 # modified to use sockets by Larry Wall <lwall@jpl-devvax.jpl.nasa.gov>
40 # NOTE: openlog now takes three arguments, just like openlog(3)
42 # call syslog() with a string priority and a list of printf() args
45 # usage: require 'syslog.pl';
47 # then (put these all in a script to test function)
50 # do openlog($program,'cons,pid','user');
51 # do syslog('info','this is another test');
52 # do syslog('mail|warning','this is a better test: %d', time);
55 # do syslog('debug','this is the last test');
56 # do openlog("$program $$",'ndelay','user');
57 # do syslog('notice','fooprogram: this is really done');
60 # do syslog('info','problem was %m'); # %m == $! in syslog(3)
64 $host = 'localhost' unless $host; # set $syslog'host to change
68 $maskpri = &LOG_UPTO(&LOG_DEBUG);
71 ($ident, $logopt, $facility) = @_; # package vars
72 $lo_pid = $logopt =~ /\bpid\b/;
73 $lo_ndelay = $logopt =~ /\bndelay\b/;
74 $lo_cons = $logopt =~ /\bcons\b/;
75 $lo_nowait = $logopt =~ /\bnowait\b/;
76 &connect if $lo_ndelay;
80 $facility = $ident = '';
85 local($oldmask) = $maskpri;
91 local($priority) = shift;
93 local($message, $whoami);
94 local(@words, $num, $numpri, $numfac, $sum);
95 local($facility) = $facility; # may need to change temporarily.
97 die "syslog: expected both priority and mask" unless $mask && $priority;
99 @words = split(/\W+/, $priority, 2);# Allow "level" or "level|facility".
103 $num = &xlate($_); # Translate word to number.
104 if (/^kern$/ || $num < 0) {
105 die "syslog: invalid level/facility: $_\n";
107 elsif ($num <= &LOG_PRIMASK) {
108 die "syslog: too many levels given: $_\n" if defined($numpri);
110 return 0 unless &LOG_MASK($numpri) & $maskpri;
113 die "syslog: too many facilities given: $_\n" if defined($numfac);
119 die "syslog: level must be given\n" unless defined($numpri);
121 if (!defined($numfac)) { # Facility not specified in this call.
122 $facility = 'user' unless $facility;
123 $numfac = &xlate($facility);
126 &connect unless $connected;
130 if (!$ident && $mask =~ /^(\S.*):\s?(.*)/) {
136 ($whoami = getlogin) ||
137 ($whoami = getpwuid($<)) ||
138 ($whoami = 'syslog');
141 $whoami .= "[$$]" if $lo_pid;
144 $mask .= "\n" unless $mask =~ /\n$/;
145 $message = sprintf ($mask, @_);
147 $sum = $numpri + $numfac;
148 unless (send(SYSLOG,"<$sum>$whoami: $message",0)) {
151 unless ($lo_nowait) {
152 do {$died = wait;} until $died == $pid || $died < 0;
156 open(CONS,">/dev/console");
157 print CONS "<$facility.$priority>$whoami: $message\r";
158 exit if defined $pid; # if fork failed, we're parent
168 $name = "LOG_$name" unless $name =~ /^LOG_/;
169 $name = "syslog'$name";
182 ($name,$aliases,$proto) = getprotobyname('udp');
185 ($name,$aliase,$port,$proto) = getservbyname('syslog','udp');
188 if (chop($myname = `hostname`)) {
189 ($name,$aliases,$addrtype,$length,@addrs) = gethostbyname($myname);
190 die "Can't lookup $myname\n" unless $name;
191 @bytes = unpack("C4",$addrs[0]);
196 $this = pack($pat, $af_inet, 0, @bytes);
198 if ($host =~ /^\d+\./) {
199 @bytes = split(/\./,$host);
202 ($name,$aliases,$addrtype,$length,@addrs) = gethostbyname($host);
203 die "Can't lookup $host\n" unless $name;
204 @bytes = unpack("C4",$addrs[0]);
206 $that = pack($pat,$af_inet,$syslog,@bytes);
208 socket(SYSLOG,$af_inet,$datagram,$udp) || die "socket: $!\n";
209 bind(SYSLOG,$this) || die "bind: $!\n";
210 connect(SYSLOG,$that) || die "connect: $!\n";
212 local($old) = select(SYSLOG); $| = 1; select($old);