This file is indexed.

/usr/lib/perl5/AnyEvent/Util/idna.pl is in libanyevent-perl 7.070-1.

This file is owned by root:root, with mode 0o644.

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
# based on RFC 3492

use AnyEvent (); BEGIN { AnyEvent::common_sense }
use Carp ();
use List::Util ();
use integer;

sub pyc_base         () {  36 }
sub pyc_tmin         () {   1 }
sub pyc_tmax         () {  26 }
sub pyc_initial_bias () {  72 }
sub pyc_initial_n    () { 128 }

sub pyc_digits       () { "abcdefghijklmnopqrstuvwxyz0123456789" }

sub pyc_adapt($$$) {
   my ($delta, $numpoints, $firsttime) = @_;

   $delta = $firsttime ? $delta / 700 : $delta >> 1;
   $delta += $delta / $numpoints;

   my $k;

   while ($delta > (pyc_base - pyc_tmin) * pyc_tmax / 2) {
      $delta /= pyc_base - pyc_tmin;
      $k += pyc_base;
   }

   $k + $delta * (pyc_base - pyc_tmin + 1) / ($delta + 38)
}

sub punycode_encode($) {
   my ($input) = @_;

   my ($n, $bias, $delta) = (pyc_initial_n, pyc_initial_bias);

   (my $output = $input) =~ y/\x00-\x7f//cd;
   my $h = my $b = length $output;

   my @input = split '', $input;

   $output .= "-" if $b && $h < @input;

   while ($h < @input) {
      my $m = List::Util::min grep { $_ >= $n } map ord, @input;

      $m - $n <= (0x7fffffff - $delta) / ($h + 1)
         or Carp::croak "punycode_encode: overflow in punycode delta encoding";
      $delta += ($m - $n) * ($h + 1);
      $n = $m;

      for my $i (@input) {
         my $c = ord $i;
         ++$delta < 0x7fffffff
            or Carp::croak "punycode_encode: overflow in punycode delta encoding"
            if $c < $n;

         if ($c == $n) {
            my ($q, $k) = ($delta, pyc_base);

            while () {
                my $t = List::Util::min pyc_tmax, List::Util::max pyc_tmin, $k - $bias;

                last if $q < $t;

                $output .= substr pyc_digits, $t + (($q - $t) % (pyc_base - $t)), 1;

                $q = ($q - $t) / (pyc_base - $t);
                $k += pyc_base;
            }

            $output .= substr pyc_digits, $q, 1;

            $bias = pyc_adapt $delta, $h + 1, $h == $b;

            $delta = 0;
            ++$h;
         }
      }

      ++$delta;
      ++$n;
   }

   $output
}

sub punycode_decode($) {
   my ($input) = @_;

   my ($n, $bias, $i) = (pyc_initial_n, pyc_initial_bias);
   my $output;

   if ($input =~ /^(.*?)-([^-]*)$/x) {
      $output = $1;
      $input = $2;

      $output =~ /[^\x00-\x7f]/
         and Carp::croak "punycode_decode: malformed punycode";
   }

   while (length $input) {
      my $oldi = $i;
      my $w    = 1;

      for (my $k = pyc_base; ; $k += pyc_base) {
         (my $digit = index pyc_digits, substr $input, 0, 1, "")
            >= 0
            or Carp::croak "punycode_decode: malformed punycode";
      
         $i += $digit * $w;
         
         my $t = List::Util::max pyc_tmin, List::Util::min pyc_tmax, $k - $bias;
         last if $digit < $t;

         $w *= pyc_base - $t;
      }

      my $outlen = 1 + length $output;
      $bias = pyc_adapt $i - $oldi, $outlen, $oldi == 0;

      $n += $i / $outlen;
      $i %=      $outlen;

      substr $output, $i, 0, chr $n;
      ++$i;
   }

   $output
}

1