tests/misc/base64.pl

   1 #!/usr/bin/perl
   2 # Exercise base64.
   3
   4 # Copyright (C) 2006-2013 Free Software Foundation, Inc.
   5
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 use strict;
  20
  21 (my $program_name = $0) =~ s|.*/||;
  22
  23 # Turn off localization of executable's output.
  24 @ENV{qw(LANGUAGE LANG LC_ALL)} = ('C') x 3;
  25
  26 # Return the encoding of a string of N 'a's.
  27 sub enc($)
  28 {
  29   my ($n) = @_;
  30   my %remainder = ( 0 => '', 1 => 'YQ==', 2 => 'YWE=' );
  31   return 'YWFh' x ($n / 3) . $remainder{$n % 3};
  32 }
  33
  34 # Construct an encoded string of length 4KB, using 3K "a"s.
  35 my $a3k = enc 3072;
  36 my @a3k_nl;
  37 # A few copies, each with different number of newlines at the start.
  38 for my $k (0..3)
  39   {
  40     (my $t = $a3k) =~ s/^/"\n"x $k/e;
  41     push @a3k_nl, $t;
  42   }
  43
  44 # Return a copy of S, with newlines inserted every WIDTH bytes.
  45 # Ensure that the result (if not the empty string) is newline-terminated.
  46 sub wrap($$)
  47 {
  48   my ($s, $width) = @_;
  49   $s =~ s/(.{$width})/$1\n/g;
  50   substr ($s, -1, 1) ne "\n"
  51     and $s .= "\n";
  52   return $s;
  53 }
  54
  55 my @Tests =
  56     (
  57      ['empty', {IN=>''}, {OUT=>""}],
  58      ['inout', {IN=>'a'}, {OUT=>"YQ==\n"}],
  59      ['wrap', '--wrap 0', {IN=>'foo'}, {OUT=>'Zm9v'}],
  60      ['wrap5-39', '--wrap=5', {IN=>'a' x 39}, {OUT=>wrap enc(39),5}],
  61      ['wrap5-40', '--wrap=5', {IN=>'a' x 40}, {OUT=>wrap enc(40),5}],
  62      ['wrap5-41', '--wrap=5', {IN=>'a' x 41}, {OUT=>wrap enc(41),5}],
  63      ['wrap5-42', '--wrap=5', {IN=>'a' x 42}, {OUT=>wrap enc(42),5}],
  64      ['wrap5-43', '--wrap=5', {IN=>'a' x 43}, {OUT=>wrap enc(43),5}],
  65      ['wrap5-44', '--wrap=5', {IN=>'a' x 44}, {OUT=>wrap enc(44),5}],
  66      ['wrap5-45', '--wrap=5', {IN=>'a' x 45}, {OUT=>wrap enc(45),5}],
  67      ['wrap5-46', '--wrap=5', {IN=>'a' x 46}, {OUT=>wrap enc(46),5}],
  68
  69      ['buf-1',   '--decode', {IN=>enc 1}, {OUT=>'a' x 1}],
  70      ['buf-2',   '--decode', {IN=>enc 2}, {OUT=>'a' x 2}],
  71      ['buf-3',   '--decode', {IN=>enc 3}, {OUT=>'a' x 3}],
  72      ['buf-4',   '--decode', {IN=>enc 4}, {OUT=>'a' x 4}],
  73      # 4KB worth of input.
  74      ['buf-4k0', '--decode', {IN=>enc 3072+0}, {OUT=>'a' x (3072+0)}],
  75      ['buf-4k1', '--decode', {IN=>enc 3072+1}, {OUT=>'a' x (3072+1)}],
  76      ['buf-4k2', '--decode', {IN=>enc 3072+2}, {OUT=>'a' x (3072+2)}],
  77      ['buf-4k3', '--decode', {IN=>enc 3072+3}, {OUT=>'a' x (3072+3)}],
  78      ['buf-4km1','--decode', {IN=>enc 3072-1}, {OUT=>'a' x (3072-1)}],
  79      ['buf-4km2','--decode', {IN=>enc 3072-2}, {OUT=>'a' x (3072-2)}],
  80      ['buf-4km3','--decode', {IN=>enc 3072-3}, {OUT=>'a' x (3072-3)}],
  81      ['buf-4km4','--decode', {IN=>enc 3072-4}, {OUT=>'a' x (3072-4)}],
  82
  83      # Exercise the case in which the final base-64 byte is
  84      # in a buffer all by itself.
  85      ['b4k-1',   '--decode', {IN=>$a3k_nl[1]}, {OUT=>'a' x (3072+0)}],
  86      ['b4k-2',   '--decode', {IN=>$a3k_nl[2]}, {OUT=>'a' x (3072+0)}],
  87      ['b4k-3',   '--decode', {IN=>$a3k_nl[3]}, {OUT=>'a' x (3072+0)}],
  88
  89      ['baddecode', '--decode', {IN=>'a'}, {OUT=>""},
  90       {ERR_SUBST => 's/.*: invalid input//'}, {ERR => "\n"}, {EXIT => 1}],
  91      ['baddecode2', '--decode', {IN=>'ab'}, {OUT=>"i"},
  92       {ERR_SUBST => 's/.*: invalid input//'}, {ERR => "\n"}, {EXIT => 1}],
  93      ['baddecode3', '--decode', {IN=>'Zzz'}, {OUT=>"g<"},
  94       {ERR_SUBST => 's/.*: invalid input//'}, {ERR => "\n"}, {EXIT => 1}],
  95      ['baddecode4', '--decode', {IN=>'Zz='}, {OUT=>"g"},
  96       {ERR_SUBST => 's/.*: invalid input//'}, {ERR => "\n"}, {EXIT => 1}],
  97      ['baddecode5', '--decode', {IN=>'Z==='}, {OUT=>""},
  98       {ERR_SUBST => 's/.*: invalid input//'}, {ERR => "\n"}, {EXIT => 1}]
  99     );
 100
 101 # For each non-failing test, create a --decode test using the
 102 # expected output as input.  Also, add tests inserting newlines.
 103 my @new;
 104 foreach my $t (@Tests)
 105   {
 106     my $exit_val;
 107     my $in;
 108     my @out;
 109
 110     # If the test has a single option of "--decode", then skip it.
 111     !ref $t->[1] && $t->[1] eq '--decode'
 112       and next;
 113
 114     foreach my $e (@$t)
 115       {
 116         ref $e && ref $e eq 'HASH'
 117           or next;
 118         defined $e->{EXIT}
 119           and $exit_val = $e->{EXIT};
 120         defined $e->{IN}
 121           and $in = $e->{IN};
 122         if (defined $e->{OUT})
 123           {
 124             my $t = $e->{OUT};
 125             push @out, $t;
 126             my $len = length $t;
 127             foreach my $i (0..$len)
 128               {
 129                 my $u = $t;
 130                 substr ($u, $i, 0) = "\n";
 131                 push @out, $u;
 132                 10 <= $i
 133                   and last;
 134               }
 135           }
 136       }
 137     $exit_val
 138       and next;
 139
 140     my $i = 0;
 141     foreach my $o (@out)
 142       {
 143         push @new, ["d$i-$t->[0]", '--decode', {IN => $o}, {OUT => $in}];
 144         ++$i;
 145       }
 146   }
 147 push @Tests, @new;
 148
 149 my $save_temps = $ENV{DEBUG};
 150 my $verbose = $ENV{VERBOSE};
 151
 152 my $prog = 'base64';
 153 my $fail = run_tests ($program_name, $prog, \@Tests, $save_temps, $verbose);
 154 exit $fail;