#!/usr/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"; }