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#!/usr/bin/env perl
require 5.008;
use warnings;
use strict;
use File::Copy;
unshift(@INC, '.');
require qpdf_test_helpers;
chdir("qpdf") or die "chdir testdir failed: $!\n";
require TestDriver;
cleanup();
my $td = new TestDriver('deterministic-id');
my $n_tests = 19;
# Do not use qpdf-test-compare in this test suite since it ignores
# /ID[1].
foreach my $d ('nn', 'ny', 'yn', 'yy')
{
my $linearize = ($d =~ m/^y/);
my $ostream = ($d =~ m/y$/);
# The deterministic ID is a function of all the data in the file.
# As such, it is affected by which zlib implementation is in use.
# The important thing is that the ID is the same if a file is
# generated the same way more than once, so rather than comparing
# the output file to a known output, compare subsequent outputs
# with each other.
foreach my $out ('a.pdf', 'b.pdf')
{
$td->runtest("deterministic ID: linearize/ostream=$d",
{$td->COMMAND =>
"qpdf -deterministic-id" .
($linearize ? " -linearize" : "") .
" -object-streams=" . ($ostream ? "generate" : "disable") .
" deterministic-id-in.pdf $out"},
{$td->STRING => "",
$td->EXIT_STATUS => 0});
}
$td->runtest("compare files",
{$td->FILE => "a.pdf"},
{$td->FILE => "b.pdf"});
check_id('a.pdf');
if ($d eq 'nn')
{
# Save for the C API test
copy("a.pdf", 'c.pdf');
}
}
$td->runtest("deterministic ID with encryption",
{$td->COMMAND => "qpdf -deterministic-id encrypted-with-images.pdf a.pdf"},
{$td->STRING => "qpdf: INTERNAL ERROR: QPDFWriter::generateID" .
" has no data for deterministic ID." .
" This may happen if deterministic ID and" .
" file encryption are requested together.\n",
$td->EXIT_STATUS => 2},
$td->NORMALIZE_NEWLINES);
$td->runtest("deterministic ID (C API)",
{$td->COMMAND =>
"qpdf-ctest 19 deterministic-id-in.pdf '' a.pdf"},
{$td->STRING => "C test 19 done\n",
$td->EXIT_STATUS => 0},
$td->NORMALIZE_NEWLINES);
$td->runtest("compare files",
{$td->FILE => "a.pdf"},
{$td->FILE => "c.pdf"});
cleanup();
$td->report($n_tests);
sub check_id
{
my $f = shift;
chomp(my $id = `qpdf --show-object=trailer $f`);
if ($id =~ m,.*/ID \[ <(9b1c69409fc9a5f50e44b9588e3e60f8)> <(.{32})>,)
{
my $id0 = $1;
my $id1 = $2;
$td->runtest("ID fields differ",
{$td->STRING => $id0 ne $id1 ? "YES\n" : "$id0 $id1\n"},
{$td->STRING => "YES\n"});
}
else
{
$td->runtest("checked ID",
{$td->STRING => "YES\n"},
{$td->STRING => "$id\n"});
}
}
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