This file is indexed.

/usr/lib/news/bin/mod-active is in inn2 2.6.1-2.

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
#! /usr/bin/perl -w
use lib '/usr/share/perl5'; use INN::Config;

# $Id: mod-active.in 9215 2011-07-05 18:27:40Z iulius $
# batch-active-update
# Author: David Lawrence <tale@isc.org>

# Reads a series of ctlinnd newgroup/rmgroup/changegroup commands, such as
# is output by docheckgroups and actsync, and efficiently handles them all at
# once.  Input can come from command-line files or stdin, a la awk/sed.

use strict;

my $oldact = $INN::Config::active;         # active file location
my $newact = "$oldact.new$$";              # temporary name for new active file
my $actime = $INN::Config::activetimes;    # active.times file
my $pausemsg = 'batch active update, ok';  # message to be used for pausing?
my $diff_flags = '';                       # flags for diff(1); default chosen if null
my $changes = 0;                           # number of changes to do

$0 =~ s#^.*/##;

die "$0: must run as $INN::Config::newsuser user"
  unless $> == (getpwnam($INN::Config::newsuser))[2];

my $debug = -t STDOUT ? 1 : 0;

local $| = 1;                # show output as it happens (for an rsh/ssh pipe)

# Guess at best flags for a condensed diff listing.  The
# checks for alternative operating systems is incomplete.
unless ($diff_flags) {
  if (`diff -v 2>&1` =~ /GNU/) {
    $diff_flags = '-U0';
  } elsif ($^O =~ /^(dec_osf|solaris)$/) {
    $diff_flags = '-C0';
  } elsif ($^O eq 'nextstep') {
    $diff_flags = '-c0';
  } else {
    $diff_flags = '-c';
  }
}

print "reading list of groups to update\n" if $debug;

my (%toadd, %todelete, %tochange);

# Read the commands given to mod-active.
while (<>) {
  if (/^\s*\S*ctlinnd newgroup (\S+) (\S+)/) {
    $toadd{$1} = $2;
    $changes++;
  } elsif (/^\s*\S*ctlinnd rmgroup (\S+)/) {
    $todelete{$1} = 1;
    $changes++;
  } elsif (/^\s*\S*ctlinnd changegroup (\S+) (\S+)/) {
    $tochange{$1} = $2;
    $changes++;
  }
}

if ($changes == 0) {
    print "active file not changed\n" if $debug;
    exit 0;
}

print "$changes change(s) to do\n" if $debug;

ctlinnd("pause $pausemsg");

open (my $OLDACT, '<', $oldact) || die "$0: open $oldact: $!\n";
open (my $NEWACT, '>', $newact) || die "$0: open $newact: $!\n";

print "rewriting active file\n" if $debug;

# Read the current active file.  The beginning of each line is
# the name of an existing newsgroup.
while (<$OLDACT>) {
  my $group = (split)[0];
  next if exists $todelete{$group};
  s/ \S+$/ $tochange{$group}/ if exists $tochange{$group};
  delete $toadd{$group};   # The newsgroup already exists.
  if (!print $NEWACT $_) {
    # Do not forget to restart INN before dying.
    ctlinnd("go $pausemsg");
    die "$0: writing $newact failed ($!), aborting\n";
  }
}

for (sort keys %toadd) {
  my $add = "$_ 0000000000 0000000001 $toadd{$_}\n";
  if (!print $NEWACT $add) {
    # Do not forget to restart INN before dying.
    ctlinnd("go $pausemsg");
    die "$0: writing $newact failed ($!), aborting\n";
  }
}

close ($OLDACT) || warn "$0: close $oldact: $!\n";
close ($NEWACT) || warn "$0: close $newact: $!\n";

if (!rename "$oldact", "$oldact.old") {
  warn "$0: rename $oldact $oldact.old: $!\n";
}

if (!rename "$newact", "$oldact") {
  # Do not restart INN here:  we no longer have a valid active file!
  die "$0: rename $newact $oldact: $!\n";
}

ctlinnd("reload active 'updated from checkgroups'");
system "diff $diff_flags $oldact.old $oldact";
ctlinnd("go $pausemsg");

print "updating $actime\n" if $debug;
if (open (my $TIMES, '>>', $actime)) {
  my $time = time;
  for (sort keys %toadd) {
    print ($TIMES "$_ $time checkgroups-update\n") || last;
  }
  close ($TIMES) || warn "$0: close $actime: $!\n";
} else {
  warn "$0: $actime not updated: $!\n";
}

print "chmoding active files\n" if $debug;
if (! chmod 0664, $oldact, "$oldact.old", $actime) {
  warn "$0: chmod $oldact $oldact.old $actime: $!\n";
}

exit 0;

sub ctlinnd {
  my ($command) = @_;

  print "ctlinnd $command\n" if $debug;
  if (system "$INN::Config::newsbin/ctlinnd -s $command") {
    die "$0: \"$command\" failed, aborting\n";
  }
}