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# This file is part of PerlIO-via-GnuPG |
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# |
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# This software is Copyright (c) 2013 by Chris Weyl. |
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# |
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# This is free software, licensed under: |
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# |
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# The GNU Lesser General Public License, Version 2.1, February 1999 |
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# |
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package PerlIO::via::GnuPG; |
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BEGIN { |
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$PerlIO::via::GnuPG::AUTHORITY = 'cpan:RSRCHBOY'; |
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} |
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# git description: 0.003-7-gb91cfad |
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$PerlIO::via::GnuPG::VERSION = '0.004'; |
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# ABSTRACT: Layer to try to decrypt on read |
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use strict; |
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use warnings::register qw{ unencrypted }; |
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#use warnings::register; |
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use warnings; |
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use autodie 2.25; |
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29116
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use IPC::Open3 'open3'; |
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4662
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use Symbol 'gensym'; |
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use List::AllUtils 'part'; |
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# gpg --decrypt -q --status-file aksdja --no-tty |
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# gpg --decrypt -q --status-file aksdja --no-tty .pause.gpg |
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sub PUSHED { |
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my ($class, $mode) = @_; |
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return bless { }, $class; |
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} |
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0
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sub _passthrough_unencrypted { 0 } |
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sub FILL { |
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my ($self, $fh) = @_; |
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return shift @{ $self->{buffer} } |
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if exists $self->{buffer}; |
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### pull in all of fh and try to decrypt it... |
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my $maybe_encrypted = do { local $/; <$fh> }; |
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### $maybe_encrypted |
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my ($in, $out, $error) = (gensym, gensym, gensym); |
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my $run = 'gpg -qd --no-tty --command-fd 0'; |
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my $pid = open3($in, $out, $error, $run); |
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### $pid |
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print $in $maybe_encrypted; |
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close $in; |
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my @output = <$out>; |
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my @errors = <$error>; |
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waitpid $pid, 0; |
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### @output |
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### @errors |
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### filter warnings out... |
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chomp @errors; |
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my ($errors, $warnings) = map { $_ || [] } part { /WARNING:/ ? 1 : 0 } @errors; |
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### $warnings |
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warnings::warnif(@$warnings) |
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if !!$warnings && @$warnings; |
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if (!!$errors && @$errors) { |
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my $not_encrypted = scalar grep { /no valid OpenPGP data found/ } @$errors; |
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### $not_encrypted |
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### passthrough: $self->_passthrough_unencrypted |
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if ($not_encrypted) { |
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if ($self->_passthrough_unencrypted) { |
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warnings::warnif( |
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'PerlIO::via::GnuPG::unencrypted', |
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'File does not appear to be encrypted!', |
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); |
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@output = ($maybe_encrypted); |
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} |
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else { |
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die "File does not appear to be encrypted!"; |
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} |
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} |
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else { |
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# "@errors" here is intentional -- show the warnings, too |
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die "Errors while attempting decryption: @errors"; |
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} |
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} |
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3
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$self->{buffer} = [ @output ]; |
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return shift @{ $self->{buffer} }; |
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305
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} |
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104
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!!42; |
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__END__ |
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=pod |
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=encoding UTF-8 |
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=for :stopwords Chris Weyl decrypt |
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=head1 NAME |
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PerlIO::via::GnuPG - Layer to try to decrypt on read |
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=head1 VERSION |
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120
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This document describes version 0.004 of PerlIO::via::GnuPG - released April 14, 2014 as part of PerlIO-via-GnuPG. |
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122
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=head1 SYNOPSIS |
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use PerlIO::via::GnuPG; |
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# dies on error, and if the file is not encrypted |
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open(my $fh, '<:via(GnuPG)', 'secret.txt.asc') |
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or die "cannot open! $!"; |
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my @in = <$fh>; # or whatever... |
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=head1 DESCRIPTION |
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This is a L<PerlIO> module to decrypt files transparently. It's pretty |
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simple and does not support writing, but works. |
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...and if it doesn't, please file an issue :) |
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=for Pod::Coverage FILL PUSHED |
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=head1 CUSTOM WARNING CATEGORIES |
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This package emits warnings from time to time. To disable warnings generated |
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when passing through unencrypted data: |
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no warnings 'PerlIO::via::GnuPG::unencrypted'; |
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Likewise, to disable all warnings issued by this package: |
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no warnings 'PerlIO::via::GnuPG'; |
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152
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=head1 SEE ALSO |
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154
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Please see those modules/websites for more information related to this module. |
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156
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=over 4 |
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158
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=item * |
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160
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L<PerlIO::via::GnuPG::Maybe|PerlIO::via::GnuPG::Maybe> |
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=item * |
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164
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L<PerlIO|PerlIO> |
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166
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=item * |
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168
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L<PerlIO::via|PerlIO::via> |
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170
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=back |
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=head1 SOURCE |
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The development version is on github at L<http://https://github.com/RsrchBoy/PerlIO-via-GnuPG> |
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and may be cloned from L<git://https://github.com/RsrchBoy/PerlIO-via-GnuPG.git> |
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=head1 BUGS |
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Please report any bugs or feature requests on the bugtracker website |
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https://github.com/RsrchBoy/PerlIO-via-GnuPG/issues |
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182
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When submitting a bug or request, please include a test-file or a |
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patch to an existing test-file that illustrates the bug or desired |
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feature. |
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186
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=head1 AUTHOR |
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188
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Chris Weyl <cweyl@alumni.drew.edu> |
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190
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=head1 COPYRIGHT AND LICENSE |
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192
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This software is Copyright (c) 2013 by Chris Weyl. |
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194
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This is free software, licensed under: |
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196
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The GNU Lesser General Public License, Version 2.1, February 1999 |
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198
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=cut |