mirror of https://github.com/vitalif/zbackup
79 lines
1.7 KiB
C++
79 lines
1.7 KiB
C++
// Copyright (c) 2012-2014 Konstantin Isakov <ikm@zbackup.org> and ZBackup contributors, see CONTRIBUTORS
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// Part of ZBackup. Licensed under GNU GPLv2 or later + OpenSSL, see LICENSE
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#include <string.h>
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#include "bundle.hh"
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#include "encryption.hh"
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#include "index_file.hh"
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#include "message.hh"
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namespace IndexFile {
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enum
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{
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FileFormatVersion = 1
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};
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Writer::Writer( EncryptionKey const & key, string const & fileName ):
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stream( fileName.c_str(), key, Encryption::ZeroIv )
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{
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stream.writeRandomIv();
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FileHeader header;
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header.set_version( FileFormatVersion );
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Message::serialize( header, stream );
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}
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void Writer::add( BundleInfo const & info, Bundle::Id const & bundleId )
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{
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IndexBundleHeader header;
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header.set_id( &bundleId, sizeof( bundleId ) );
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Message::serialize( header, stream );
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Message::serialize( info, stream );
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}
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Writer::~Writer()
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{
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// Final record which does not have a bundle id
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IndexBundleHeader header;
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Message::serialize( header, stream );
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stream.writeAdler32();
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}
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Reader::Reader( EncryptionKey const & key, string const & fileName ):
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stream( fileName.c_str(), key, Encryption::ZeroIv )
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{
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stream.consumeRandomIv();
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FileHeader header;
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Message::parse( header, stream );
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if ( header.version() != FileFormatVersion )
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throw exUnsupportedVersion();
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}
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bool Reader::readNextRecord( BundleInfo & info, Bundle::Id & bundleId )
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{
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IndexBundleHeader header;
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Message::parse( header, stream );
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if ( header.has_id() )
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{
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if ( header.id().size() != sizeof( bundleId ) )
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throw exIncorrectBundleIdSize();
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memcpy( &bundleId, header.id().data(), sizeof( bundleId ) );
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Message::parse( info, stream );
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return true;
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}
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else
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{
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stream.checkAdler32();
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return false;
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}
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}
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}
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