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# Copyright (c) 2009, 2010 Oleksandr Tymoshenko <gonzo@bluezbox.com> |
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# All rights reserved. |
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# Redistribution and use in source and binary forms, with or without |
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# modification, are permitted provided that the following conditions |
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# are met: |
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# 1. Redistributions of source code must retain the above copyright |
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# notice, this list of conditions and the following disclaimer. |
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# 2. Redistributions in binary form must reproduce the above copyright |
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# notice, this list of conditions and the following disclaimer in the |
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# documentation and/or other materials provided with the distribution. |
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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# SUCH DAMAGE. |
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# OEPBS Container format implementation |
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# http://www.idpf.org/ocf/ocf1.0/download/ocf10.htm |
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package EBook::EPUB::Container; |
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use strict; |
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use XML::Writer; |
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use IO::File; |
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use File::Find; |
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use Carp; |
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sub new |
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{ |
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my ($class, %params) = @_; |
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my $self = { |
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root_files => [], |
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files => [], |
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encrypted_files => [], |
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}; |
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return bless $self, $class; |
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} |
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# |
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# Add root file (item in <rootfiles> element) |
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# |
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sub add_root_file |
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{ |
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my ($self, $path, $mediatype) = @_; |
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push @{$self->{root_files}}, { |
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path => $path, |
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mediatype => $mediatype, |
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}; |
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} |
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# |
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# Add content. Recurse if it's directory |
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# |
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sub add_path |
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{ |
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my ($self, $from_path, $container_path) = @_; |
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# Closure to collect files recursively |
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my $file_cb = sub { |
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my $file = $File::Find::name; |
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my $dest = $file; |
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$dest =~ s/\Q$from_path\E/$container_path/; |
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# XXX: UNIX only |
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if (-d $file) { |
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$dest .= "/"; |
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} |
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if (!is_valid_path($dest)) { |
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croak("Bad container path: $dest"); |
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return; |
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} |
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push @{$self->{files}}, { |
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frompath => $file, |
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containerpath => $dest, |
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} |
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}; |
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if (-d $from_path) { |
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# XXX: UNIX only |
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# Strip unncessary slashes |
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$from_path =~ s/\/+$//g; |
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$container_path =~ s/\/+$//g; |
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find( { wanted => $file_cb, no_chdir => 1 }, $from_path); |
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} |
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else { |
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if (!is_valid_path($container_path)) { |
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croak("Bad container path: $container_path"); |
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return; |
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} |
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push @{$self->{files}}, { |
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frompath => $from_path, |
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containerpath => $container_path, |
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} |
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} |
105
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106
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} |
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108
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# |
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# Add encrypted file, at the moment it means font "encrypted" with |
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# Adobe content protection algorithm |
111
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# |
112
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sub add_encrypted_path |
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{ |
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my ($self, $path) = @_; |
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116
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0
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0
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if (!is_valid_path($path)) { |
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croak("Bad container path: $path"); |
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0
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return; |
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} |
120
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121
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0
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push @{$self->{encrypted_files}}, $path; |
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0
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122
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} |
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124
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# |
125
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# Check if file name conforms specs |
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# TODO: make conformant to spec |
127
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sub is_valid_path |
128
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{ |
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my $path = shift; |
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return if($path =~ /META-INF/); |
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132
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0
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return 1; |
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} |
134
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135
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# |
136
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# Generate container.xml for META-INF directory |
137
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# |
138
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sub write_container |
139
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{ |
140
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0
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0
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0
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my ($self, $outname) = @_; |
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0
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my $container = new IO::File(">$outname"); |
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143
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0
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0
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if (!defined($container)) { |
144
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0
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return; |
145
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} |
146
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147
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0
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my $writer = new XML::Writer( |
148
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OUTPUT => $container, |
149
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DATA_MODE => 1, |
150
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DATA_INDENT => 2, |
151
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); |
152
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0
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$writer->xmlDecl("utf-8"); |
153
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0
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$writer->startTag( "container", |
154
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"xmlns" => "urn:oasis:names:tc:opendocument:xmlns:container", |
155
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"version" => "1.0", |
156
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); |
157
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0
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$writer->startTag("rootfiles"); |
158
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0
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foreach my $rf (@{$self->{root_files}}) { |
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0
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159
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0
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$writer->emptyTag("rootfile", |
160
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"full-path", $rf->{path}, |
161
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"media-type", $rf->{mediatype}, |
162
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); |
163
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} |
164
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0
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$writer->endTag("rootfiles"); |
165
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0
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$writer->endTag("container"); |
166
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0
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$writer->end(); |
167
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0
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$container->close(); |
168
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169
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0
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return 1; |
170
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} |
171
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172
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sub has_encrypted_files |
173
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{ |
174
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0
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0
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0
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my ($self) = @_; |
175
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0
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0
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return 1 if (@{$self->{encrypted_files}}); |
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0
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176
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177
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# No encrypted data |
178
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0
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return; |
179
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} |
180
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181
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# |
182
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# Generate encryption.xml for META-INF directory |
183
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# |
184
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sub write_encryption |
185
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{ |
186
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0
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0
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0
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my ($self, $outname) = @_; |
187
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0
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my $container = new IO::File(">$outname"); |
188
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189
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0
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0
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if (!defined($container)) { |
190
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0
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return; |
191
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} |
192
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193
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0
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my $writer = new XML::Writer( |
194
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OUTPUT => $container, |
195
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DATA_MODE => 1, |
196
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DATA_INDENT => 2, |
197
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); |
198
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0
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$writer->xmlDecl("utf-8"); |
199
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0
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$writer->startTag( "encryption", |
200
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"xmlns" => "urn:oasis:names:tc:opendocument:xmlns:container", |
201
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); |
202
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0
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foreach my $rf (@{$self->{encrypted_files}}) { |
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0
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203
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0
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$writer->startTag('EncryptedData', |
204
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'xmlns' => 'http://www.w3.org/2001/04/xmlenc#', |
205
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); |
206
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0
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$writer->emptyTag('EncryptionMethod', |
207
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'Algorithm' => 'http://ns.adobe.com/pdf/enc#RC', |
208
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); |
209
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0
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$writer->startTag('CipherData'); |
210
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0
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$writer->emptyTag('CipherReference', |
211
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'URI' => $rf, |
212
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); |
213
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0
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$writer->endTag('CipherData'); |
214
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0
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$writer->endTag('EncryptedData'); |
215
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} |
216
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217
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0
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$writer->endTag("encryption"); |
218
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0
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$writer->end(); |
219
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0
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$container->close(); |
220
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221
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0
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return 1; |
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} |
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225
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226
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1; |
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__END__; |
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=head1 NAME |
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232
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EBook::EPUB::Container |
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234
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=head1 SYNOPSIS |
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236
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Abstract OEPBS Container implementation |
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238
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my $container = EBook::EPUB::Container->new() |
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$container->add_path('/path/to/content.ncx', 'DATA/content.ncx'); |
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$container->add_path('/path/to/page1.xhtml', 'DATA/page1.xhtml'); |
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$container->add_path('/path/to/page2.xhtml', 'DATA/page2.xhtml'); |
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$container->add_root_file('DATA/content.ncx'); |
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244
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=head1 SUBROUTINES/METHODS |
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246
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=over 4 |
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248
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=item new() |
249
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250
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Create new instance of EBook::EPUB::Container object |
251
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=item add_path($file_path, $container_path) |
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254
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Add existing file into container |
255
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256
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=item add_encrypted_path($container_path) |
257
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258
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Mark file $container_path as encrypted. File should be already encrypted and |
259
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added. This function just marks it encrypted |
260
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261
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=item add_root_path($container_path) |
262
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263
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Set file in container to be root file |
264
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265
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|
=back |
266
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267
|
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|
=head1 AUTHOR |
268
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269
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Oleksandr Tymoshenko, E<lt>gonzo@bluezbox.comE<gt> |
270
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271
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|
=head1 BUGS |
272
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273
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Please report any bugs or feature requests to E<lt>gonzo@bluezbox.comE<gt> |
274
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275
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=head1 LICENSE AND COPYRIGHT |
276
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277
|
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|
Copyright 2009, 2010 Oleksandr Tymoshenko. |
278
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279
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|
L<http://bluezbox.com> |
280
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281
|
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|
|
This module is free software; you can redistribute it and/or |
282
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|
|
modify it under the terms of the BSD license. See the F<LICENSE> file |
283
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|
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included with this distribution. |