This file is indexed.

/usr/bin/postgreyreport is in postgrey 1.34-1.2.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
#!/usr/bin/perl

# postgreyreport by tbaker@bakerfl.org
# bits and peices of code taken from postgrey 1.11 ( http://isg.ee.ethz.ch/tools/postgrey/ )

package postgreyreport;
use strict;
use BerkeleyDB;
use Getopt::Long 2.25 qw(:config posix_default no_ignore_case);
use Net::Server::Daemonize qw( get_uid get_gid set_uid set_gid );
use Pod::Usage;
#use Net::RBLClient;
my $VERSION='1.14.3 (20100321)';

# used in maillog processing
my $RE_revdns_ip   	= qr/ ([^\[\s]+)\[(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})\]/;	# ptr[1.2.3.4]
my $RE_reject 		= qr/reject: /;
my $RE_triplet 		= qr/$RE_revdns_ip: 450 .+from=<([^>]+)> to=<([^>]+)>/;

my $dns; my %dns_cache; 		# used for --check_sender 
my $rbl = undef;			# Net::RBLClient object
select((select(STDOUT), $| = 1)[0]); 	# Unbuffer standard output.

# default options, override via command line
my %opt = ( 	
	user 			=> 'postgrey',
	dbdir 			=> '/var/lib/postgrey',
	delay			=> 300,
	return_string		=> 'Greylisted',	# match on this string

	check_sender		=> '',			# = mx,a,mx/24,a/24 # todo=spf - uses Net::DNS
	show_tries		=> 0,			# number of greylist attempts within --delay
	separate_by_subnet	=> '',			# if not blank output this string for every new /24
	separate_by_ip	   	=> '',			# if not blank output this string for every new IP
	single_line	   	=> 1,			# output everything on a single line? (grouping enabled if false )
	tab			=> 0,			# use tabs as separators, not spaces (only in single line mode)
	show_time		=> 0,			# show entry time in maillog
	
	skip_dnsbl		=> [],			# list of DNSBL servers to check and skip reporting for
	skip_clients		=> [],			# files of clients to skip reporting	
	skip_pool		=> 0,			# skip entries that appear to be a provider pool (last 2 ips in ptr)
	match_clients		=> [], 			# files of ONLY clients to report on

	v 			=> 0,			# verbose? used mainly for script debugging
	debug_db		=> 0,			# output time() values from btree db
	debug_re		=> '',			# but only for these hosts (separate by commas )
	);

# start here 
sub main
{
	GetOptions(\%opt, 
		'help|h', 'version', 'man',
		'delay=s', 'user|u=s', 'dbdir=s', 
		'debug_db', 'debug_re=s', 'v+',
		'return_string|greylist-text=s',
		'show_tries', 
		'check_sender=s',
		'separate_by_subnet=s', 'separate_by_ip=s',  
		'single_line!', 'tab', 'show_time',
		'skip_dnsbl=s@','skip_clients=s@', 'match_clients=s@', 'skip_pool', 
		) or exit(1);
	if($opt{help})     { pod2usage(1) }
	if($opt{man})      { pod2usage(-exitstatus => 0, -verbose => 2) }
	if ($opt{version})	{ print "postgreyreport $VERSION\n"; exit(0) }

	if (scalar(@{$opt{skip_dnsbl}}) > 0) {
		require Net::RBLClient;
		$rbl = Net::RBLClient->new ( lists => $opt{skip_dnsbl} );
	}


	setup_debug();		 # display key/value pairs from db
	read_client_files();
	
	postgrey_fatal_report(); # do the work
}

#######################################################
# postgrey_fatal(): report on all fatal triplets
#
sub postgrey_fatal_report()
{
	umask 0077;							# mode 600
	my %triplets;							# hash of all triplets we will look at
	drop_priv($opt{user});						# change UID to 'postgrey'
	
	# convert --check_sender into hash: opt{do_checks}{VAL}
	if ($opt{check_sender})	{ 
		use Net::DNS; 
		$dns = Net::DNS::Resolver->new;
		$opt{check_sender} = lc $opt{check_sender};
		foreach my $check ( split(/,/,$opt{check_sender}) ) {
			$opt{do_checks}{$check}=1;	
			print "Enabling Check: opt{do_checks}{$check} \n" if ($opt{v});
		}
	}

	my $db = setup_dbm($opt{dbdir});				# connect to BerkeleyDB
	my @greyfatal = find_and_sort_fatal( \%{$db}, \%triplets );	# read STDIN and sort the fatal triplets
	
	# foreach: loop through (sorted) fatal triplets and display to STDOUT
	my ($last_ip,$last_subnet);					# define now

	$opt{separate_by_ip} 		=~ s|\\n|\n|g;			# do it once before the for loop
	$opt{separate_by_subnet} 	=~ s|\\n|\n|g;			# ""
	
	foreach my $key (@greyfatal)
	{
		my ($ip,$sender,$recipient) = split(/\//,$key);		# separate the triplet
		
		my $revdns = $triplets{$key}{revdns};			# we saved revdns during maillog parse, so we dont have to look it up

		# --check_sender=mx,mx/24,a,a/24
		# dns lookups from Net::DNS are cached and only performed once per sender's @domain
		my $check_sender = '';
		if 	( $opt{do_checks}{mx} 		and check_sender_mx( $sender,$ip,'mx') 		) {
			$check_sender='MX';
		} elsif	( $opt{do_checks}{'mx/24'} 	and check_sender_mx( $sender,$ip,'mx/24')	) {
			$check_sender='MX/24';
		} elsif	( $opt{do_checks}{a} 		and check_sender_a(  $sender,$ip,'a') 		) {
			$check_sender='A';
		} elsif	( $opt{do_checks}{'a/24'} 	and check_sender_a(  $sender,$ip,'a/24') 	) {
			$check_sender='A/24';
		}

		# if separate_by_ip or separate_by_subnet display configured text
		if ($last_subnet eq $triplets{$key}{subnet}) {
			print "$opt{separate_by_ip}" 			if ( ($last_ip ne $ip) and $opt{separate_by_ip}) ;
		} else  {
			if 	( $opt{separate_by_subnet}	) {
			 print    $opt{separate_by_subnet};
			} elsif ( $opt{separate_by_ip} 		) { 
			 print     $opt{separate_by_ip};
			}
		}

		# display output on single line or multi-line
		if ($opt{single_line})
		{
			if ($opt{tab}) {
				printf "%s\t", $triplets{$key}{entrytime}	if($opt{show_time})	;
				printf "%s\t", $triplets{$key}{counter}  	if($opt{show_tries})	;
				printf "%s\t", $check_sender			if($opt{check_sender})	;
				printf "%s\t", $ip							;
				printf "%s\t", $revdns							;
				printf "%s\t", $sender							;
			} else {
				printf "%s ", $triplets{$key}{entrytime}	if($opt{show_time})	;
				printf "%s ", $triplets{$key}{counter}  	if($opt{show_tries})	;
				printf "%5s ", $check_sender			if($opt{check_sender})	;
				printf "%15s ", $ip							;
				printf "%s ", $revdns							;
				printf "%s ", $sender							;
			}
			printf "%s\n", $recipient;						;
		} else 
		{
			### multi-line
			
			## only output PTR - IP if its a new IP (grouping)
			printf "%-77s ", $revdns 			if($last_ip ne $ip)	;
			printf "%15s"  , $ip  				if($last_ip ne $ip)	;
			print  "\n"   					if($last_ip ne $ip)	;
			
			## always output the new pairs MX/A? (sender/recipient)
			
			# if sender was from MX or A of above IP			
			printf "%5s "  , $check_sender			if($opt{check_sender})	;
			printf "      ", $check_sender			if(! $opt{check_sender});
			# tries or blank space
			printf " %2s ", $triplets{$key}{counter}  	if($opt{show_tries})	;
			print  "    " 					if(! $opt{show_tries})	;
			
			# sender - recipient
			printf " %40s ", $sender						;
			printf " %40s ", $recipient						;
			print  "\n"								;
			
		}
		($last_ip, $last_subnet) = ($ip, $triplets{$key}{subnet}); # save for next iteration
	}
	
}

#####################################################################
# find_and_sort_fatal( \%db, \%triplets )
#  read STDIN (maillog) and remember any 4xx greylisted log entries
# return array of fatal triplets (ip/sender/recipient) sorted by ip
sub find_and_sort_fatal
{
	my ($db, $triplets) = @_;
	
	# while(<>): STDIN is maillog.0, looking at reject: 4xx greylist entries and remembering all triplets
	MAILLOG: while (<>)
	{
		next unless (/$RE_reject/o);				# only look at reject: lines
		next unless (/$opt{return_string}/o);			# only look at greylisted lines
		next unless (/$RE_triplet/o);				# extract the triplet
		my ($revdns,$ipaddr,$sender,$recipient) = ($1,$2,$3,$4);
		my @ip = split(/\./, $ipaddr);
		$sender      = do_sender_substitutions($sender);		
		my ($subnet) = do_client_substitutions($ipaddr,$revdns); # 1.2.3.0
		my $key    = lc "$ipaddr/$sender/$recipient";		# postgrey key
		my $subkey = lc "$subnet/$sender/$recipient";		# subnet key 1.2.3.0/sender/recipient

		# if we are wanting to dump first,last out of the db do it before we determine if its fatal
		if ( is_debug_host($revdns) )
		{
			foreach my $testkey ( @{[$key,$subkey]} )
			{
				my ($tfirst, $tlast) = split(/,/,$db->{$testkey});
				my $tdiff = $tlast - $tfirst;
				print "$testkey : $db->{$testkey} = " .$tdiff . "s \n";	
			}
		}

		# if --match_clients was specified on command line then move on to the next line unless a match is found
		if ( scalar(@{$opt{match_clients}}) > 0 ) {
			next unless (	find_in_array($ipaddr, $opt{MATCH_CLIENT_IPS}) or 
					find_in_array($revdns, $opt{MATCH_CLIENT_PTR})     );
		}

		# if --skip_clients was specified on command line, skip to next line if a match is found
		next if (	find_in_array($ipaddr, $opt{SKIP_CLIENT_IPS}) or
				find_in_array($revdns, $opt{SKIP_CLIENT_PTR})	  );			

		# if --skip_pool then if last 2 ips are in ptr skip to next line
		next if ( $opt{skip_pool} and defined $ip[3] and $revdns =~ /$ip[2]/ and $revdns =~ /$ip[3]/ );
		
		# check the db, proceed if the triplet was fatal
		next MAILLOG unless is_fatal_triplet($db, $key, $subkey);	

		# if --skip_dnsbl then do RBL lookups (slow!)
		if ( defined $rbl ) {
			$rbl->lookup($ipaddr);
			my @listed = $rbl->listed_by;
			next if ( scalar(@listed) > 0 );
			
		}
		
		# we made it past all the filtering checks, remember the triplet as fatal

		$triplets->{$key}{counter}++;				# increase counter for this triplet
		$triplets->{$key}{revdns}=$revdns;			# save its ptr for later use
		$triplets->{$key}{ipaddr}=$ipaddr;			# save IP in easy to access form
		$triplets->{$key}{subnet}=$subnet;			# save subnet in easy to access form
		$triplets->{$key}{subkey}=$subkey;			# save key in subnet form
		$triplets->{$key}{entrytime}=substr($_,0,15);
		
	}

	die "Debugging DB active, report shutdown" if ($opt{debug_db}); # don't do anything other than spit out key pairs and stop

	my @greyfatal = keys %{ $triplets }; 				# create an array containing all triplets in form: ip/sender/recipient
	# sort fatal triplets by IP address
	@greyfatal = sort {
		    pack('C4' => $a =~
		      /(\d+)\.(\d+)\.(\d+)\.(\d+)/)
		    cmp
		    pack('C4' => $b =~
		      /(\d+)\.(\d+)\.(\d+)\.(\d+)/)
		  } @greyfatal;
		  
	return @greyfatal;			
	
}

sub find_in_array($$)
{
	my ($var, $patterns) = @_;
	for my $w (@{$patterns}) {
		return 1 if $var =~ $w;	
	}
	return 0;
}


sub is_fatal_triplet($$$)
{
	my ($db, $key, $subkey) = @_;
	
	my ($lapsed_ip, $lapsed_subnet) = (undef,undef);
	
	# try lookup by key
	if ( $db->{$key} =~ /,/ )
	{
		my ($tfirst,$tlast) = split(/,/,$db->{$key});		# time_first_seen,time_last_seen
		$lapsed_ip = $tlast - $tfirst;				# difference is time lapsed
	}
	
	# try subnet lookup	
	if ( $db->{$subkey} =~ /,/ )
	{
		my ($tfirst,$tlast) = split(/,/,$db->{$subkey});		# time_first_seen,time_last_seen
		$lapsed_subnet = $tlast - $tfirst;
	}
	
	if (   
	      ( defined $lapsed_ip or defined $lapsed_subnet )  
		and
	    (!( ($lapsed_ip >= $opt{delay} ) or ($lapsed_subnet >= $opt{delay}) ) )   
	   )    
	{
		#push (@greyfatal, $key); 	# if lapsed time less than --delay, then it was a fatal triplet
		return 1;
	} elsif (( ! defined $lapsed_ip ) and ( ! defined $lapsed_subnet ))
	{
		#push (@greyfatal, $key); 	# if neither is found in the db it must have been removed.
		return 1;
	}
	return 0;
}	


###########################################################################
# check_sender_mx(sender, ip, subnet) # subnet='' or '/24'
# return true if ip is in MX list for sender domain (or /24 if specified)
# enable via --check_sender=mx or --check_sender=mx,mx/24
sub check_sender_mx($$$)
{
	my ($sender, $ip, $subnet) = @_;
	my ($user, $hostname) 		 = split(/\@/,$sender);
	my @iplist;

	if ( $dns_cache{$hostname}{mx} )
	{
		@iplist = @{$dns_cache{$hostname}{mx}};	# use the cache for MX records
	} else 
	{
		my @mxr = mx($dns, $hostname);		# no cache existed, call out to Net::DNS
		# mx records
		if ($#mxr >= 0) 
		{ 
			foreach my $mxrr (@mxr) 
			{
				# print "MX for $hostname: ". $mxrr->exchange . "\n";
				my $ipquery = $dns->search($mxrr->exchange);
				if ($ipquery) 
				{
					foreach my $iprr ($ipquery->answer) 
					{
						next unless ($iprr->type eq "A");
						# print " IP=" . $iprr->address . "\n";
						push (@iplist, $iprr->address);
		
					}
				}
			}
		}
		if ( $#iplist < 0 ) { push (@iplist, '0.0.0.0'); }  # cache ip of all zero's so we dont keep calling net::dns if nothing is returned
		$dns_cache{$hostname}{mx} = [ @iplist ]; # cache the array IPs of the MX records into an hash location.
	}
	$subnet =~ s/^mx//i;
	return check_sender_ip_vs_list($ip, $subnet, \@iplist);
}

###########################################################################
# check_sender_a(sender, ip, subnet) # subnet='' or '/24'
# return true if ip is in A record for sender domain (or /24 if specified)
# enable via --check_sender=a or --check_sender=a,24
sub check_sender_a($$$)
{
	my ($sender, $ip, $subnet) = @_;
	my ($user, $hostname) 		 = split(/\@/,$sender);
	my @iplist;

	if ( $dns_cache{$hostname}{a} )
	{
		@iplist = @{$dns_cache{$hostname}{a}};	# use the cache'd A records
	} else 
	{
		my $ipquery = $dns->search($hostname);	# no cache existed, call out to Net::DNS
		if ($ipquery) 
		{
			foreach my $iprr ($ipquery->answer) 
			{
				next unless ($iprr->type eq "A");
				# print " IP=" . $iprr->address . "\n";
				push (@iplist, $iprr->address);

			}
		}
		if ( $#iplist < 0 ) { push (@iplist, '0.0.0.0'); }  # cache ip of all zero's so we dont keep calling net::dns if nothing is returned
		$dns_cache{$hostname}{a} = [ @iplist ]; # cache the array IPs of the A records into an hash location.
	}
	$subnet =~ s/^a//i;
	return check_sender_ip_vs_list($ip, $subnet, \@iplist);
}
###################################################
# used by check_sender_mx and check_sender_a
# return true if IP is in list
# if /24 then return true if first 3 octets match
sub check_sender_ip_vs_list($$$)
{
	my ($client_ip, $match, $iplist) = @_;
	foreach my $ipaddr ( @{$iplist} )
	{
		return 1 if ($client_ip eq $ipaddr);
		return 0 if (! $match eq '/24');
		
		$client_ip =~ /^(\d{1,3}\.\d{1,3}\.\d{1,3}\.)/;
		my $client_classaddr = $1;
		$ipaddr =~ /^(\d{1,3}\.\d{1,3}\.\d{1,3}\.)/;
		my $ipaddr_classaddr = $1;

		return 1 if ( $client_classaddr eq $ipaddr_classaddr );
	}	
	return 0
}


#########################################
# drop_priv(username)
# code from Net::Server
sub drop_priv
{
	my ($user) = @_;
	### drop privileges
	eval{
		if( $user ne $> ){
			# print "Setting uid to \"$user\"\n";
		set_uid( $user );
		}
	};
	if( $@ ){
		if( $> == 0 ){
			die $@;
		} elsif( $< == 0){
			# print "NOTICE: Effective UID changed, but Real UID is 0: $@\n";
		}else{
			print $@."\n";
		}
	}
}

###########################################3
# setup_dbm(dbdir)
# connect to BerkeleyDB *READ_ONLY*, return reference to db hash
sub setup_dbm
{
	my ($dbdir) = @_;
	my %db;	
	

	    tie(%db, 'BerkeleyDB::Btree',
	        -Filename => "$dbdir/postgrey.db",
	        -Flags    => DB_RDONLY,
	    ) or die "ERROR: can't find database $dbdir/postgrey.db: $!\n";
	    
	return \%db;
}
	

# from postgrey 1.14 http://isg.ee.ethz.ch/tools/postgrey/    
sub do_sender_substitutions($)
{
    my ($addr) = @_;

    my ($user, $domain) = split(/@/, $addr, 2);
    defined $domain or return $addr;
    # strip extension, used sometimes for mailing-list VERP
    $user =~ s/\+.*//;
    # replace numbers in VERP addresses with '#' so that
    # we don't create a new key for each mail
    $user =~ s/\b\d+\b/#/g;
    return "$user\@$domain";
}

# from postgrey 1.14 http://isg.ee.ethz.ch/tools/postgrey/    
sub do_client_substitutions($$)
{
    	my ($ip, $revdns) = @_;

	# --lookup-by-subnet:

    return ($ip, undef) if $revdns eq 'unknown';
    my @ip=split(/\./, $ip);
    return ($ip, undef) unless defined $ip[3];
    # skip if it contains the last two IP numbers in the hostname
    # (we assume it is a pool of dialup addresses of a provider)
    return ($ip, undef) if $revdns =~ /$ip[2]/ and $revdns =~ /$ip[3]/;
    return (join('.', @ip[0..2], '0'), $ip[3]);

}


## used code from postgrey for read_client_whitelists() to import client files
sub read_client_files()
{
	my @skip_client_ips;
	my @skip_client_ptr;
	my @match_client_ips;
	my @match_client_ptr;
	
	for my $f (@{$opt{'skip_clients'}}) {
          if(open(CLIENTS, $f)) {
            while(<CLIENTS>) {
                s/^\s+//; s/\s+$//; next if $_ eq '' or /^#/;
                if(/^\/(\S+)\/$/) {
                    # regular expression
                    push @skip_client_ptr, qr{$1}i;
                }
                elsif(/^\d{1,3}(?:\.\d{1,3}){0,3}$/) {
                    # IP address or part of it
                    push @skip_client_ips, qr{^$_};
                }
                # note: we had ^[^\s\/]+$ but it triggers a bug in perl 5.8.0
                elsif(/^\S+$/) {
                    push @skip_client_ptr, qr{\Q$_\E$}i;
                }
                else {
                    warn "WARNING: $f line $.: doesn't look like a hostname\n";
                }
            }
          }  
	}
	$opt{SKIP_CLIENT_PTR} = \@skip_client_ptr;
	$opt{SKIP_CLIENT_IPS} = \@skip_client_ips;

	for my $f (@{$opt{'match_clients'}}) {
          if(open(CLIENTS, $f)) {
            while(<CLIENTS>) {
                s/^\s+//; s/\s+$//; next if $_ eq '' or /^#/;
                if(/^\/(\S+)\/$/) {
                    # regular expression
                    push @match_client_ptr, qr{$1}i;
                }
                elsif(/^\d{1,3}(?:\.\d{1,3}){0,3}$/) {
                    # IP address or part of it
                    push @match_client_ips, qr{^$_};
                }
                # note: we had ^[^\s\/]+$ but it triggers a bug in perl 5.8.0
                elsif(/^\S+$/) {
                    push @match_client_ptr, qr{\Q$_\E$}i;
                }
                else {
                    warn "WARNING: $f line $.: doesn't look like a hostname\n";
                }
            }
          }  
	}
	$opt{MATCH_CLIENT_PTR} = \@match_client_ptr;
	$opt{MATCH_CLIENT_IPS} = \@match_client_ips;
	
	
}


sub setup_debug()
{
	if ($opt{debug_db} or $opt{search_db})
	{
		die "\nDebugging_DB Activated, but no matching RE's defined. use --debug_re also! \n  " if (! $opt{debug_re} );
		print "\nDebugging_DB Active, Displaying hosting matching REs: ";
		foreach my $RE ( split(/,/,$opt{debug_re}) )
		{
        		print "$RE ; ";
        		push ( @{ $opt{debug_RE} }, qr/$RE/i );
		}
		print "\n\n";
	}	
	
}

sub is_debug_host($)
{
	my ($host) = @_;
	foreach my $RE ( @{$opt{debug_RE}} )
	{
		return 1 if ($host =~ /$RE/);
	}	
	return 0;
}


main();
exit 0;


__END__



=head1 NAME

postgreyreport - Fatal report for Postfix Greylisting Policy Server

=head1 SYNOPSIS

B<postgreyreport> [I<options>...]

 -h, --help                   display this help and exit
     --version		      display version and exit

     --user=USER              run as USER (default: postgrey)
     --dbdir=PATH             find db files in PATH (default: /var/lib/postgrey)
     --delay=N                report triplets that did not try again after N seconds (default: 300)
     --greylist-text=TXT      text to match on for greylist maillog lines

     --skip_pool	      Skip report for 'subscriber pools' ( last 2 octets of IP found in PTR name )
     --skip_dnsbl=RBL	      RBL server to query and skip reporting for any listed hosts (SLOW!!)
     --skip_clients=FILE      PTR or IP or REGEXP of clients to skip in report        
     --match_clients=FILE     *ONLY* report if fatal *AND* PTR/IP of client matches
     
     --show_tries	      display the number of attempts failed triplets made in first column
     --show_time	      show entry time in maillog (single line only)
     --tab		      use tabs as separators for easy cut(1)ting

     --nosingle_line	      display sender/recipients grouped by ptr - ip
     --separate_by_subnet=TXT display TXT for every new /24 (ex: "=================\n" )
     --separate_by_ip=TXT     display TXT for every new IP  (ex: "\n")
     --check_sender=LIST      one or more of: mx,mx/24,a,a/24
                              does DNS/A lookups for sender @domain and compares sending IP
                              if match displays "MX" "A" or "MX/24" or "A/24" depending on LIST
  
   Note that --(skip|match)_clients can be specified multiple times and there are no default files.
   Same rules apply as postgrey's --whitelist-clients, see postgrey doc for more info.

   --skip_dnsbl can also be specified multiple times to query multiple DNSBL servers.

=head1 DESCRIPTION

postgreyreport opens postgrey.db as read-only; reads a maillog via STDIN, 
extracts the triplets for any Greylisted lines and looks them up in postgrey.db. 
if the difference in first and last time seen is less than --delay=N then the 
triplet is considered fatal and displayed to STDOUT

The report sorts by client IP address 


=head2 Note:

unless you are using --lookup_by_subnet or excluding all known MTA pools you will likely have 
false fatal reports for "BigISPs". A message that was tried from every IP in SMTP pool before making it
through will show up in the report for all of the attempted source IPs


=head2 USAGE

It is best to run postgreyreport against a maillog that is at least several hours old (yesterdays?) 
( you be the judge on how old is acceptable ). if you run the report against a live maillog you are
not giving legit MTA's enough time to try again and you will have lots of inaccurate information.

=over

=item * Ex usage:

	zcat /var/log/maillog.0.gz | ./postgreyreport [options] > postgreyreport.log

	or
	
	zcat /var/log/maillog.0.gz | \
	./postgreyreport --nosingle_line --check_sender=mx,a \
	--separate_by_subnet=":==================\n"
	# 94 "=" total, some were omitted for clarity

=item * Ex Output: ( POD wrapping will mess this up, view source )

 :============================================================================================
 unknown                 4.29.43.31
                    marissa_mcclendonuu@abit.com.tw                      user1@recipient1.com 
                            jake_meyerdt@ali.com.tw                      user2@recipient1.com 
                        jenny_banks_sh@translate.ru                      user1@recipient2.com 
                              rvazquezpo@ali.com.tw                      user3@recipient1.com 
                                 aep@notimexico.com                      user2@recipient1.com  
                    brittneystanley_ei@cetra.org.tw                      user2@recipient1.com  
                            brendasheehan_cw@lib.ru                      user2@recipient1.com  
 :============================================================================================
 lsanca1-ar5-127-189.biz.dsl.gtei.net      4.33.127.189
    A      fokkensr@lsanca1-ar5-127-189.biz.dsl.gtei.net                 user2@recipient1.com 
                       
                       cyxlfrfwciercu@publicist.com                      user3@recipient4.com  
 :============================================================================================
 smtpout.mac.com       17.250.248.83
                             do_not_reply@apple.com                      user4@recipient5.com 

 smtpout.mac.com       17.250.248.88
   MX                             legituser@mac.com                      user6@recipient7.com 
 :============================================================================================

=back

=head1 HISTORY


B<1.14.3  20100321>

=over 4

  Some additions, Leonard den Ottolander <leonard.den.ottolander.nl>
  New option: --tab   Use tabs as separator in single line mode
  New option: --show_time   Show entry time in maillog in single line mode

=back

B<1.14.2  20040715>

=over 4

  BUGFIX: (automatic) lookup-by-subnet support was broken, fixed.
  BUGFIX: corrected a few spelling errors
  new Option: --skip_pool   Skip report for 'subscriber pools' 

=back

B<1.14.1  20040712>

=over 4

  Changed --return-string to --greylist-text to match postgrey
  new Option: --skip_clients=FILE
  new Option: --match_clients=FILE
  new Option: --skip_dnsbl=RBL.DNS.NAME
  All 3 of the new options can be specified multiple times.
  Updated do_*_subsititions again to match postgrey

=back

B<1.11.1 20040701>

=over 4

  missing keys from DB are considered fatal triplets and included in report
  Changed --delay testing from "greater than" to "greater than or equal to"
  Fixed --help and --man switches
  Removed setuid Notice

=back

B<1.6.4  20040618>

=over 4

  Initial Public Version (postgrey/contrib)

=back

=head1 AUTHOR

S<Tom Baker E<lt>tbaker@bakerfl.orgE<gt>>

=cut