--- /dev/null
+#!/bin/perl -w
+# $Revision: 1.7 $
+# Lists the zipfile given as a first argument and tests CRC's.
+# Usage:
+# perl ziptest.pl zipfile.zip
+
+use strict;
+
+use Archive::Zip qw(:ERROR_CODES :CONSTANTS);
+
+package CRCComputingFileHandle;
+use Archive::Zip::MockFileHandle;
+
+use vars qw( @ISA );
+@ISA = qw( Archive::Zip::MockFileHandle );
+
+my $crc;
+
+sub writeHook
+{
+ my $self = shift;
+ my $bytes = shift;
+ my $length = length($bytes);
+ $crc = Archive::Zip::computeCRC32($bytes, $crc);
+}
+
+sub resetCRC { $crc = 0 }
+
+sub crc { $crc }
+
+package main;
+
+die "usage: $0 zipfile.zip\n"
+ if (scalar(@ARGV) != 1);
+
+my $zip = Archive::Zip->new();
+my $status = $zip->read( $ARGV[0] );
+exit $status if $status != AZ_OK;
+
+print " Length Size Last Modified CRC-32 Name\n";
+print "-------- -------- ------------------------ -------- ----\n";
+
+my $fh = CRCComputingFileHandle->new();
+my @errors;
+
+foreach my $member ($zip->members())
+{
+ my $compressedSize = $member->compressedSize();
+ $fh->resetCRC();
+ $member->desiredCompressionMethod(COMPRESSION_STORED);
+ $status = $member->extractToFileHandle($fh);
+ exit $status if $status != AZ_OK;
+ my $crc = $fh->crc();
+
+ my $ct = scalar(localtime($member->lastModTime()));
+ chomp($ct);
+
+ printf("%8d %8d %s %08x %s\n",
+ $member->uncompressedSize(),
+ $compressedSize,
+ $ct,
+ $member->crc32(),
+ $member->fileName()
+ );
+
+ if ($member->crc32() != $crc)
+ {
+ push(@errors,
+ sprintf("Member %s CRC error: file says %08x computed: %08x\n",
+ $member->fileName(), $member->crc32(), $crc));
+ }
+}
+
+if (scalar(@errors))
+{
+ print join("\n", @errors);
+ die "CRC errors found\n";
+}
+else
+{
+ print "All CRCs check OK\n";
+}