This file is indexed.

/usr/sbin/dwww-index++ is in dwww 1.13.1.

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
#!/usr/bin/perl
# vim:ft=perl:cindent:ts=4:sts=4:sw=4:et:fdm=marker:cms=\ #\ %s
#
#    dwww-index++ - create index of registered documentation using index++ command
#    Copyright (C) 2003 Robert Luberda <robert@debian.org>
#
#    This program is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 2 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program; if not, write to the Free Software
#    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
#
# $Id: dwww-index++ 511 2009-01-10 23:59:42Z robert $
#

use strict;

use Debian::Dwww::Utils;
use Debian::Dwww::Version;
use Debian::Dwww::DocBase;
use Debian::Dwww::Initialize;
use File::Glob ':glob';
use File::Copy;
use Getopt::Std;

$| = 1;


# Global variables
my @index_formats=(
	'html',
	'text',
	'rtf',
	'latex'
	);

# files we never index, checked before stat() call
my $stopfiles = qr(\.(css|dsl|ico|gif|jpe?g|lfig|mp[34]|sasl|png|svg)$)o;
# files we actually index, after stat() call
my $indexfiles = qr(\.([sx]?html?|te?xt?|rtf|[ja]sp|[1-9n][^\.]*)(\.gz|\.bz2|\.Z)?$)o;

my $dwww_url 				= "/cgi-bin/dwww";
my $dwww_swish_conf   	  	= "/usr/share/dwww/swish++.conf";
my $dwww_swish_index  	  	= "/var/cache/dwww/dwww.swish++.index";
my $dwww_indexed_files_db	= "/var/cache/dwww/index.files.db";
my $dwww_lastrun_info		= "/var/cache/dwww/index.runinfo";
my $path_to_index			= '/usr/bin/index++';
my $MAX_RECURS_SUBDIRS_LVL  = 10;

our($opt_v, $opt_f, $opt_i, $opt_l);				# set by getopt


my $RUN_MODE_SKIP			= 0;
my $RUN_MODE_FULL 			= 1;
my $RUN_MODE_INCREMENTAL 	= 2;

if (! -x $path_to_index) {
	&Inform( "Cannot find index++ command.\n" .
			 "Do you have swish++ package installed?", 1);
	exit(1);
}

my $dwwwconf   		= &DwwwInitialize("/etc/dwww/dwww.conf");
&DwwwSetupDirs($dwwwconf);

$Getopt::Std::STANDARD_HELP_VERSION=1;
&getopts('vfli');
&CheckOptions();

$ErrorProc = \&ErrorHandle;

my %old_files_hash = ( );
my %new_files_hash = ( );

&Main();

exit 0;


#########################################################################
#
# Main function
#
sub Main() { # {{{
	my $do_index	=	$dwwwconf->{'DWWW_INDEX_DOCUMENTATION'};
	if (!$opt_f and !$opt_i and !$opt_l
		and defined $do_index and lc($do_index) eq "no") {
		&Inform("Building index disabled in configuration");
		exit(0);
	}

	my %last_run_info  	= ();
	&ReadLastRunInfo(\%last_run_info);
	my $run_mode  		= &FindRunMode(\%last_run_info);


	if ($run_mode == $RUN_MODE_SKIP) {
		&Inform("Skipping indexing"); # FIXME
		exit(0);
	}
	&Inform("Incremental index will be build") 	if $run_mode == $RUN_MODE_INCREMENTAL;
	&Inform("Full index will be build") 		if $run_mode == $RUN_MODE_FULL;

	# set current time
	$last_run_info{$run_mode} = time();

	&Inform("Parsing doc-base files");

	&ReadIndexedFileNames() if $run_mode == $RUN_MODE_INCREMENTAL;

	&FilesFromDocBaseDir("/var/lib/doc-base/documents");

	if ($opt_l) {
		&WriteListOfFilesToIndex(\*STDOUT, 0);
		exit 0;
	 }

	&PerformIndexing($run_mode);
	&SaveIndexedFileNames($run_mode == $RUN_MODE_INCREMENTAL)
	&SaveLastRunInfo(\%last_run_info);

} # }}}

#########################################################################
#
# Local functions
#

# Finds out if we need to build incremental or full indexing
sub FindRunMode($) { # {{{
	my $run_info = shift;

	return $RUN_MODE_FULL 			if $opt_f or ! -f $dwww_swish_index
										or ! -f $dwww_indexed_files_db;
	return $RUN_MODE_INCREMENTAL	if $opt_i;

	my $secondsPerDay	= 24 * 3600;
	my $now 			= time();
	my $endday	 		= $now - $now % $secondsPerDay + $secondsPerDay - 1;

	foreach my $run_mode ($RUN_MODE_FULL, $RUN_MODE_INCREMENTAL) {
		my $itv = $dwwwconf->{ ($run_mode == $RUN_MODE_FULL)
									? 'DWWW_INDEX_FULL_TIME_INTERVAL'
									: 'DWWW_INDEX_INCREMENTAL_TIME_INTERVAL' };
		$itv *= $secondsPerDay;

		if ($itv < $secondsPerDay) {
			return $run_mode if $run_info->{$run_mode} + $itv < $now;
		} else {
			return $run_mode if $run_info->{$run_mode} + $itv < $endday;
		}
	}

	return $RUN_MODE_SKIP;
} # }}}


# Runs index++
sub PerformIndexing($) { # {{{
	my $run_mode = shift;

	my $tmpfile 	= $dwww_swish_index.".tmp";
	my $resultfile	= $tmpfile;

	my @index_command 	= ($path_to_index, 
                            '--follow-links', '--no-recurse',
							'--config-file', $dwww_swish_conf,
		     				'--index-file',  $tmpfile);

	if ($run_mode == $RUN_MODE_INCREMENTAL) {
        copy($dwww_swish_index, $tmpfile) or 
            die("Cannot copy $dwww_swish_index to $tmpfile:$!\n");
    }        
    


	if ($run_mode == $RUN_MODE_INCREMENTAL or
		($run_mode = $RUN_MODE_FULL and &CopyMan2HTMLIndex($tmpfile) ) ) {
		$resultfile  = $tmpfile . '.new';
		push(@index_command, '--incremental');
	}

	push (@index_command, @ARGV) if ($#ARGV > -1);
	push (@index_command, '-');

	Inform("Executing: " . join(' ', @index_command));
	open (INDEX, '|-')
		|| exec { $index_command[0] } @index_command;

	&WriteListOfFilesToIndex(\*INDEX, 1);

	close INDEX;

	wait;

	if ( -s $resultfile ) {
		unlink($dwww_swish_index);
		rename($resultfile, $dwww_swish_index);
	}

	if ( -e $tmpfile ) {
		unlink($tmpfile)
	}
} # }}}

# Write to filehandle list of files we need to index
sub WriteListOfFilesToIndex($$ ) { # {{{
	my $FH 			= shift;
	my $do_sleep	= shift;

	foreach my $f (sort keys %new_files_hash) {
    	syswrite $FH, "$new_files_hash{$f}\n";
		# sleep 150 ms
        select(undef, undef, undef, 0.15) if $do_sleep;
	}
} # }}}


# Read information about last full & incremental index run
sub ReadLastRunInfo($) { # {{{
	my $run_info_ref = shift;
	my @ri = ();

	if (-f $dwww_lastrun_info) {
		open (RUNINFO, "<", $dwww_lastrun_info) or
			die "Cannot open $dwww_lastrun_info for reading: $!\n";
		binmode RUNINFO;

		my $values;
		sysread(RUNINFO, $values, 8192);
		close RUNINFO;
		@ri = grep { $_ = 0 + $_; 1 } split (/\0/, $values, 2);
		push @ri, 0;
	}
	$run_info_ref->{$RUN_MODE_FULL} 		= $ri[0];
	$run_info_ref->{$RUN_MODE_INCREMENTAL} 	= $ri[1];
	undef @ri;
} # }}}


# Write information about last full & incremental index run
sub SaveLastRunInfo($) { # {{{
	my $run_info_ref = shift;

	open (RUNINFO, ">", $dwww_lastrun_info . ".tmp") or
		die "Cannot open $dwww_lastrun_info.tmp for writing: $!\n";
	binmode RUNINFO;

	syswrite(RUNINFO,
				$run_info_ref->{$RUN_MODE_FULL} . "\0" . $run_info_ref->{$RUN_MODE_INCREMENTAL});
	close RUNINFO;

	rename $dwww_lastrun_info.".tmp", $dwww_lastrun_info
		or die ("Cannot rename  $dwww_lastrun_info.tmp to $dwww_lastrun_info: $!\n");
} # }}}

# Read list of already indexed filesand add them to %old_files_hash
sub ReadIndexedFileNames() { # {{{
	my $file = $dwww_indexed_files_db;
	return unless -f $file;
	open (IDXDB, "<", $file) or die "Cannot open $file for reading: $!\n";

	binmode IDXDB;
	my $values = "";

	while (sysread(IDXDB, $values, 8192, length($values))) {
		my @fnames =  grep { s/\001/\/usr\/share\/doc\//o; 1 } split(/\0/, $values);

		$values = (substr($values, length($values) -1, 1) eq "\0") ? "" : pop(@fnames);

		&AddToFileHash({}, \%old_files_hash, \@fnames, 0);
	}
	close IDXDB;
	die "Invalid db file $file\n" if $values;
} # }}}


# Write list of indexed files
sub SaveIndexedFileNames() { # {{{
	my $append  	= shift;
	my $file		= $dwww_indexed_files_db;
	my $tmpfile 	= $file.".tmp";
	my $openmode	= ">";

	if ($append) {
		copy($file, $tmpfile) or die "Cannot copy $file to $tmpfile: $!\n";
		$openmode = ">>";
	}

	open (IDXDB, $openmode, $tmpfile) or die "Cannot open $tmpfile for writting: $!\n";
	binmode IDXDB;

	foreach my $hashref (\%old_files_hash, \%new_files_hash) {
		my $values = join("\0",  values %{$hashref}) . "\0";
		$values =~ s/\/usr\/share\/doc\//\001/g;
		my ($len, $offset) = (length($values), 0);
		while ($offset < $len) {
			syswrite(IDXDB, $values, 8192, $offset) or
				die "Cannot write to $tmpfile: $!\n";
			$offset += 8192;
		}
	}
	close IDXBD;

	rename ($tmpfile, $file) or die "Cannot rename $tmpfile to $file: $!\n";
} # }}}


sub ErrorHandle { # {{{
	my $file = shift;
	my $msg  = shift;

	print STDERR "$file: $msg\n" if $opt_v;
} # }}}


# Copy index file created by man2html
# Returns 1 on success
sub CopyMan2HTMLIndex($) { # {{{
	my $destfile 		= shift;
	my $m2h_merge 		= $dwwwconf->{'DWWW_MERGE_MAN2HTML_INDEX'};
	my $m2h_idx_file 	= '/var/cache/man2html/man2html.swish++.index';

	if (defined $m2h_merge and lc($m2h_merge) eq "yes" and -r $m2h_idx_file) {
		return 1 if (copy($m2h_idx_file, $destfile));
	}
	return 0;
 } # }}}


# adds files to %old_files_hash or %new_files_hash (passed as local references)
sub AddToFileHash($$$$) { # {{{
	my ($old_hash, $new_hash,$reffiles,$max_recursion_subdirs) = @_;
	my $key;

	foreach my $file (@{$reffiles}) {
		next if $file =~ $stopfiles;
		my @stat = stat $file ;

		if (-f _) {
			next unless $file =~ $indexfiles;
			my $key = sprintf("%d:%10.10d", $stat[0], $stat[1]);

			next if $old_hash->{$key};
			next if $new_hash->{$key};
			$new_hash->{$key} = $file;

		}

		# recurse though subdir
		next unless ($max_recursion_subdirs > 0) and -d _;
		if (not opendir DOCSUBDIR, $file) {
			&Inform("Cannot open directory $file: $!");
			next;
		}

		$file =~ s/\/*$/\//; # add trailing slash
		my @files = grep { $_ !~ /^\./ and $_ = $file.$_ } readdir (DOCSUBDIR);
		closedir DOCSUBDIR;
		&AddToFileHash($old_hash, $new_hash, \@files, $max_recursion_subdirs - 1);
	}
} # }}}


sub FilesFromDocBaseDir($) { # {{{
	my $dir = shift;

	if (not opendir DOCBASEDIR, $dir) {
		&Inform("Cannot open directory $dir: $!");
		return;
	}

	while (my $f = readdir(DOCBASEDIR))
	{
		next if $f =~ /^\./;
		next if -d $f;

		if (defined (my $entry = &ParseDocBaseFile("$dir/$f"))) {
			&FilesFromDocBaseEntry("$dir/$f", $entry);
			undef %{$entry};
		}
	}
	closedir DOCBASEDIR;
} # }}}


sub FilesFromDocBaseEntry() { # {{{
	my $file = shift;
	my $entry = shift;
	my $doc_entry = { };
	my $known = 0;

	if (exists $entry->{'dwww-section'}) {
		&DwwwSection2Section($entry);
	}


	foreach my $f (@index_formats) {
		my @globbed = ();
		my $ei = defined $entry->{'formats'}->{$f}->{'index'} ?
		$entry->{'formats'}->{$f}->{'index'} : '';
		my $ef = defined $entry->{'formats'}->{$f}->{'files'} ?
		$entry->{'formats'}->{$f}->{'files'} : '';


		if ($ei ne '' && -r $ei) {
			push(@globbed, $ei);
		}
		if ($ef ne '') {
			foreach my $f (split(/\s+/, $ef)) {
				push(@globbed, &bsd_glob($f, GLOB_NOSORT)) unless ($f eq $ei);
			}
		}

		&AddToFileHash(\%old_files_hash,\%new_files_hash, \@globbed, $MAX_RECURS_SUBDIRS_LVL);

	}

} # }}}

# Print message to stderr
sub Inform($;$) { # {{{
	my $message = shift;
	my $force	= shift;

	print STDERR $message."\n" if $force or $opt_v;
} # }}}

# Check if valid options were passed to program
sub CheckOptions() { # {{{

		if ($opt_i and $opt_f) {
			&Inform("Options -i and -f cannot be used together", 1);
			exit 1;
		}

		if ($opt_i and !(-f $dwww_swish_index and -f $dwww_indexed_files_db)) {
			&Inform("Cannot build incremental index until full index is built", 1);
			exit 1;
		}
} # }}}

#########################################################################
#
# GetOpt callbacks
#
sub VERSION_MESSAGE() { # {{{
	my $prog = $0;
	$prog 	 =~ s/^.*\///;
	print STDOUT "$prog version $Debian::Dwww::Version::version\n";
} # }}}

sub HELP_MESSAGE() { # {{{
	my $prog = $0;
	$prog 	 =~ s/^.*\///;
	print STDOUT "Usage: $prog [-v] [-f] [-- swish_option [...]]\n";
	print STDOUT "   -v     be more verbose\n";
	print STDOUT "   -f     build the index (full) even if it's disabled in the configuration file\n";
	print STDOUT "   -i     build the index (incremental) even if it's disabled in the configuration file\n";
	print STDOUT "   -l     do not really index, only output the list of files to index\n";
	print STDOUT "   -- opt option passed to swish's index++ program\n";
} # }}}