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// This file is part of par2cmdline (a PAR 2.0 compatible file verification and
// repair tool). See http://parchive.sourceforge.net for details of PAR 2.0.
//
// Copyright (c) 2003 Peter Brian Clements
//
// par2cmdline is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// par2cmdline is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
#ifndef __DESCRIPTIONPACKET_H__
#define __DESCRIPTIONPACKET_H__
// The description packet records details about a file (including its name,
// size, and the Hash of both the whole file and the first 16k of the file).
class DescriptionPacket : public CriticalPacket
{
public:
// Construct the packet
DescriptionPacket(void) {};
~DescriptionPacket(void) {};
public:
// Construct the packet and store the filename and size.
bool Create(string _filename, u64 _filesize);
// Store the computed Hash values in the packet.
void Hash16k(const MD5Hash &hash);
void HashFull(const MD5Hash &hash);
// Compute and return the file id hash from information in the packet
void ComputeFileId(void);
const MD5Hash& FileId(void) const;
// Return the size of the file
u64 FileSize(void) const;
public:
// Load a description packet from a specified file
bool Load(DiskFile *diskfile, u64 offset, PACKET_HEADER &header);
// Return the name of the file
string FileName(void) const;
// Get the Hash values from the packet
const MD5Hash& HashFull(void) const;
const MD5Hash& Hash16k(void) const;
};
// Get the file id from the packet
inline const MD5Hash& DescriptionPacket::FileId(void) const
{
assert(packetdata != 0);
return ((const FILEDESCRIPTIONPACKET*)packetdata)->fileid;
}
// Get the size of the file from the packet
inline u64 DescriptionPacket::FileSize(void) const
{
assert(packetdata != 0);
return ((const FILEDESCRIPTIONPACKET*)packetdata)->length;
}
// Get the name of the file from the packet
// NB whilst the file format does not guarantee that the name will have a NULL
// termination character, par2cmdline always allocates a little extra data
// and fills it with NULLs to allow the filename to be directly read out of
// the packet.
inline string DescriptionPacket::FileName(void) const
{
assert(packetdata != 0);
// return (char*)((const FILEDESCRIPTIONPACKET*)packetdata)->name();
return (char*)((const FILEDESCRIPTIONPACKET*)packetdata)->name;
}
// Get the full file hash value from the packet
inline const MD5Hash& DescriptionPacket::HashFull(void) const
{
assert(packetdata != 0);
return ((const FILEDESCRIPTIONPACKET*)packetdata)->hashfull;
}
// The the hash of the first 16k of the file from the packet
inline const MD5Hash& DescriptionPacket::Hash16k(void) const
{
assert(packetdata != 0);
return ((const FILEDESCRIPTIONPACKET*)packetdata)->hash16k;
}
#endif // __DESCRIPTIONPACKET_H__
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