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// Copyright (c) 2012-2014 Konstantin Isakov <ikm@zbackup.org> and ZBackup contributors, see CONTRIBUTORS
// Part of ZBackup. Licensed under GNU GPLv2 or later + OpenSSL, see LICENSE
#include "zbackup_base.hh"
#include "storage_info_file.hh"
#include "compression.hh"
using std::string;
Paths::Paths( string const & storageDir ): storageDir( storageDir )
{
}
string Paths::getTmpPath()
{
return string( Dir::addPath( storageDir, "tmp" ) );
}
string Paths::getBundlesPath()
{
return string( Dir::addPath( storageDir, "bundles" ) );
}
string Paths::getStorageInfoPath()
{
return string( Dir::addPath( storageDir, "info" ) );
}
string Paths::getIndexPath()
{
return string( Dir::addPath( storageDir, "index" ) );
}
string Paths::getBackupsPath()
{
return string( Dir::addPath( storageDir, "backups" ) );
}
ZBackupBase::ZBackupBase( string const & storageDir, string const & password ):
Paths( storageDir ), storageInfo( loadStorageInfo() ),
encryptionkey( password, storageInfo.has_encryption_key() ?
&storageInfo.encryption_key() : 0 ),
tmpMgr( getTmpPath() ),
chunkIndex( encryptionkey, tmpMgr, getIndexPath(), false )
{
}
ZBackupBase::ZBackupBase( string const & storageDir, string const & password,
bool prohibitChunkIndexLoading ):
Paths( storageDir ), storageInfo( loadStorageInfo() ),
encryptionkey( password, storageInfo.has_encryption_key() ?
&storageInfo.encryption_key() : 0 ),
tmpMgr( getTmpPath() ),
chunkIndex( encryptionkey, tmpMgr, getIndexPath(), prohibitChunkIndexLoading )
{
}
StorageInfo ZBackupBase::loadStorageInfo()
{
StorageInfo storageInfo;
StorageInfoFile::load( getStorageInfoPath(), storageInfo );
return storageInfo;
}
void ZBackupBase::initStorage( string const & storageDir,
string const & password,
bool isEncrypted )
{
StorageInfo storageInfo;
// TODO: make the following configurable
storageInfo.set_chunk_max_size( 65536 );
storageInfo.set_bundle_max_payload_size( 0x200000 );
if ( isEncrypted )
EncryptionKey::generate( password,
*storageInfo.mutable_encryption_key() );
storageInfo.set_default_compression_method( Compression::CompressionMethod::defaultCompression->getName() );
Paths paths( storageDir );
if ( !Dir::exists( storageDir ) )
Dir::create( storageDir );
if ( !Dir::exists( paths.getBundlesPath() ) )
Dir::create( paths.getBundlesPath() );
if ( !Dir::exists( paths.getBackupsPath() ) )
Dir::create( paths.getBackupsPath() );
if ( !Dir::exists( paths.getIndexPath() ) )
Dir::create( paths.getIndexPath() );
string storageInfoPath( paths.getStorageInfoPath() );
if ( File::exists( storageInfoPath ) )
throw exWontOverwrite( storageInfoPath );
StorageInfoFile::save( storageInfoPath, storageInfo );
}
string ZBackupBase::deriveStorageDirFromBackupsFile( string const &
backupsFile, bool allowOutside )
{
// TODO: handle cases when there's a backup/ folder within the backup/ folder
// correctly
if ( allowOutside )
return Dir::getRealPath( backupsFile );
string realPath = Dir::getRealPath( Dir::getDirName( backupsFile ) );
size_t pos;
if ( realPath.size() >= 8 && strcmp( realPath.c_str() + realPath.size() - 8,
"/backups") == 0 )
pos = realPath.size() - 8;
else
pos = realPath.rfind( "/backups/" );
if ( pos == string::npos )
throw exCantDeriveStorageDir( backupsFile );
else
return realPath.substr( 0, pos );
}
void ZBackupBase::useDefaultCompressionMethod()
{
std::string compression_method_name = storageInfo.default_compression_method();
const_sptr<Compression::CompressionMethod> compression
= Compression::CompressionMethod::findCompression( compression_method_name );
Compression::CompressionMethod::defaultCompression = compression;
}
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