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|
#!/usr/bin/perl
# rpm helper scriptlet to add an entry into default syslog implementation
# $Id$
use Getopt::Std;
use strict;
my @facilities = qw/auth authpriv cron daemon \
kern lpr mail mark news syslog \
user uucp local0 local1 local2 \
local3 local4 local5 local6 local7/;
my %facilities = map { $_ => 1 } @facilities;
my @priorities = qw/debug info notice warning err crit alert emerg/;
my $i;
my %priorities = map { $_ => $i++ } @priorities;
main(@ARGV) unless caller();
sub main {
my %opts = (
s => '/dev/log',
m => 'debug',
M => 'emerg'
);
getopts('s:m:M:', \%opts);
my ($source, $min, $max) = @opts{qw/s m M/};
die <<EOF if @ARGV < 4;
usage: $0 [options] <pkg> <nb> <facility> <dest>
Available options:
-s <source> source (default: /dev/log)
-m <priority> min priority (default: debug)
-M <priority> max priority (default: emerg)
EOF
my ($package, $number, $dest, $facility) = @ARGV;
# don't do anything for upgrade
exit(0) if $number == 2;
# check arguments
die "invalid facility '$facility'" if $facility && !$facilities{$facility};
die "invalid min priority '$min'" if $min && ! defined $priorities{$min};
die "invalid max priority '$max'" if $max && ! defined $priorities{$max};
die "maximum priority '$max' lower than minimum priority '$min'"
if $min && $max && ($priorities{$max} < $priorities{$min});
my $release_file = '/etc/release';
open(my $fh, '<', $release_file)
or die "can't open $release_file: $!";
my $line = <$fh>;
$line =~ /^Mandriva Linux release (\d\d\d\d\.\d)/;
my $release = $1;
close($fh);
# add an entry to default syslog implementation, if installed
if ($release && version->parse($release) < version->parse("2010.1")) {
add_sysklogd_entry($package, $source, $dest, $facility, $min, $max)
if -f '/etc/init.d/syslog';
} else {
add_rsyslog_entry($package, $source, $dest, $facility, $min, $max)
if -f '/etc/init.d/rsyslog';
}
}
sub add_sysklogd_entry {
my ($package, $source, $dest, $facility, $min, $max) = @_;
# ensure source is configured
add_new_source($source, '/etc/sysconfig/syslog')
if $source ne '/dev/log';
# compute selector
my $selector = get_selector($facility, $min, $max);
# compute spacing to keep default configuration file formatting
my $tabs = length($selector) < 48 ?
((48 - length($selector)) / 8) :
1;
# append entry
open(my $out, '>>', '/etc/syslog.conf')
or die "Can't open /etc/syslog.conf for appending: $!";
print $out "# BEGIN: Automatically added by $package installation\n";
print $out "$selector" . ("\t" x $tabs) . "-$dest\n";
print $out "# END\n";
close($out);
# relaunch syslog
system('service syslog condrestart 2>&1 >/dev/null');
}
sub add_rsyslog_entry {
my ($package, $source, $dest, $facility, $min, $max) = @_;
# compute selector
my $selector = get_selector($facility, $min, $max);
# append entry
open(my $out, '>', "/etc/rsyslog.d/$package.conf")
or die "Can't open /etc/rsyslog.d/$package.conf for writing: $!";
print $out "# Automatically added by $package installation\n";
print $out "\$AddUnixListenSocket $source\n" if $source ne '/dev/log';
print $out "$selector\t-$dest\n";
close($out);
# relaunch rsyslog
system('service rsyslog condrestart 2>&1 >/dev/null');
}
sub add_new_source {
my ($source, $file) = @_;
my ($content, $changed);
open(my $in, '<', $file)
or die "Can't open $file for reading: $!";
while (my $line = <$in>) {
if ($line =~ /^SYSLOGD_OPTIONS=(.*)/) {
my $options = $1;
if ($options) {
my $quote;
if ($options !~ /-a\s+$source/) {
if ($options =~ /^(["'])(.*)\1$/) {
$quote = $1;
$options = $2;
} else {
$quote = '"';
}
$options = $quote . $options . " -a $source" . $quote;
$changed = 1;
}
} else {
$options = "\"-a $source\"";
$changed = 1;
}
$content .= "SYSLOGD_OPTIONS=$options\n";
} else {
$content .= $line;
}
}
close($in);
if ($changed) {
open(my $out, '>', $file)
or die "Can't open $file for writing: $!";
print $out $content;
close($out);
}
}
sub get_selector {
my ($facility, $min, $max) = @_;
my $selector;
if ($max eq 'emerg') {
if ($min eq 'debug') {
$selector = "$facility.*";
} else {
$selector = "$facility.$min";
}
} else {
for my $i ($priorities{$min} .. $priorities{$max}) {
$selector .= ';' if $selector;
$selector .= "$facility.=$priorities[$i]";
}
}
return $selector;
}
1;
|
