--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/master_watcher	Mon Dec 23 09:18:06 2002 +0000
@@ -0,0 +1,160 @@
+#! /usr/bin/perl -w
+my $USAGE = <<'#';
+Usage: $ME [options]
+       -l --logfile=s   Name of the logfile we've to read [$opt_logfile]
+       -d --dir=s       Where the named.conf's are expected [$opt_zonesdir]
+       -u --[no]update  Update the "masters"-entries [$opt_update]
+       -c --[no]create  Add newly appeared domains [$opt_create]
+       -f --[no]follow  Follow the end of the logfile [$opt_follow]
+       -h --help        This text [$opt_help]
+#
+# Es wird ein Verzeichnis geben, in diesem Verzeichnis liegt für 
+# *jede* Zone eine eigene Konfigurations-Datei.
+# Diese ganzen Konfigurationsdateien werden dann zusammengefaßt
+# und diese zusammengefaßte wird dem bind per "include" mitgeteilt.
+
+use strict;
+use File::Basename;
+use IO::Handle;
+use File::Path;
+use Getopt::Long;
+use Unix::Syslog qw/:macros :subs/;
+
+my $ME = basename $0;
+
+
+my %auth = (
+    "212.172.233.34" => "pu.schlittermann.de",
+    "212.80.235.130" => "pu2.schlittermann.de",
+    "145.253.160.50" => "bastion.actech.de",
+    "212.172.233.146" => "ns.flaemingnet.de",
+    "212.172.127.34" => "mango.compot.com",
+    "62.144.175.34" => "ns.add-on.de",	    
+    "195.145.19.34" => "ns.datom.de",
+);
+
+$SIG{__DIE__} = sub { syslog(LOG_ERR, $_[0]); exit -1; };
+$SIG{__WARN__} = sub { syslog(LOG_WARNING, $_[0]); };
+
+my %seen;
+
+my $opt_help = 0;
+my $opt_logfile = "./syslog";
+my $opt_zonesdir = "./zones";
+my $opt_follow = 0;
+my $opt_create = 1;
+my $opt_update = 1;
+
+my $naptime = 1;
+
+
+sub updateFile($@);
+
+
+MAIN: {
+
+
+    openlog($ME, LOG_PID | LOG_PERROR, LOG_DAEMON);
+    syslog(LOG_NOTICE, "starting");
+
+    GetOptions(
+	"help" => \$opt_help,
+	"logfile=s" => \$opt_logfile,
+	"follow!" => \$opt_follow,
+	"dir=s" => \$opt_zonesdir)
+    or die "$ME: Bad Usage\n";
+
+    if ($opt_help) {
+	print eval "\"$USAGE\"";
+	exit 0;
+    }
+
+    open (LOGFILE, $_ = "<$opt_logfile") or die "Can't open $_: $!\n";
+    for (;;) {
+	my (%masters, my %missing);
+	while (<LOGFILE>) {
+	    
+	    my ($domain, $ip);
+	    
+	    # NOTIFY-Zeilen
+	    ($domain, $ip) = /NOTIFY.*?\((\S+?),.*?\[([\d.]+)\]/ and do {
+		if (not exists $auth{$ip}) {
+		    warn "notify for $domain from unauthorized ip $ip\n";
+		    next;
+		};
+		$masters{$domain}->{$ip} = 1;
+		next;
+	    };
+
+	    # NOTIFY for vergessene 
+	    /NOTIFY for "(\S+?)".*not one of our zones/ and do {
+		if (not exists $masters{$1}) {
+		    warn "skipping $1 (not authorized)\n";
+		    next;
+		}
+		$missing{$1} = 1;
+	    };
+	}
+
+	# Jetzt sind wir erstmal durch und verarbeiten alles
+
+	#foreach my $domain (sort keys %missing) {
+	    #updateFile($domain, keys %{$masters{$domain}});
+	    #delete $masters{$domain};
+	    #delete $missing{$domain};
+	#}
+
+	foreach my $domain (sort keys %masters) {
+	    updateFile($domain, keys %{$masters{$domain}});
+	    delete $masters{$domain};
+	    delete $missing{$domain} if exists $missing{$domain};
+	}
+
+	last if !$opt_follow;
+	sleep $naptime;
+	# seek(LOGFILE, 0, 1);
+	LOGFILE->clearerr();
+    }
+}
+
+sub updateFile($@)
+{
+    local $_;
+    my $domain = shift;
+    my $masters = join "; ", @_;
+    my $file = "$opt_zonesdir/$domain";
+
+    syslog(LOG_NOTICE, "Updating/Creating $file ($masters)\n");
+    return;
+
+    if (-f $file) {
+	open (IN, $_ = "<$file") or die "Can't open $_: $!\n";
+	# ein etwas anderer Versuch - noch nicht fertig
+	$_ = join "", <IN>;
+	close(IN); open(OUT, ">&STDOUT"); # Wenn's geht, dann in's File
+	s/(masters\s*{)(.*?)(};)/$1$2; $masters; $3/;
+	print OUT;
+    }
+    
+    else {
+	open(OUT, $_ = ">$file") or die "Can't open $_: $!\n";
+    
+	    print OUT <<_EOF_;
+// Autogenerated
+zone "$domain" {
+    type slave;
+    masters { $masters; };
+    file "/etc/bind/slave/$domain";
+    allow-query { any; };
+    allow-transfer { none; };
+    allow-update { none; };
+};
+_EOF_
+    close OUT;
+    }
+    
+    return;
+}
+	    
+
+# vim:sts=4 sw=4 aw ai sm: