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Move archive constants

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This commit is contained in:
Matt Nadareski
2020-12-09 14:45:11 -08:00
parent 218dad20d2
commit 549c93bb43
5 changed files with 77 additions and 69 deletions
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27
SabreTools.FileTypes/GZipArchive.cs
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@@ -18,6 +18,27 @@ namespace SabreTools.FileTypes
/// </summary>
public class GZipArchive : BaseArchive
{
#region Constants
/* (Torrent)GZ Header Format
https://tools.ietf.org/html/rfc1952
00-01 Identification (0x1F, 0x8B) GzSignature
02 Compression Method (0-7 reserved, 8 deflate; 0x08)
03 Flags (0 FTEXT, 1 FHCRC, 2 FEXTRA, 3 FNAME, 4 FCOMMENT, 5 reserved, 6 reserved, 7 reserved; 0x04)
04-07 Modification time (Unix format; 0x00, 0x00, 0x00, 0x00)
08 Extra Flags (2 maximum compression, 4 fastest algorithm; 0x00)
09 OS (See list on https://tools.ietf.org/html/rfc1952; 0x00)
0A-0B Length of extra field (mirrored; 0x1C, 0x00)
0C-27 Extra field
0C-1B MD5 Hash
1C-1F CRC hash
20-27 Int64 size (mirrored)
*/
private readonly static byte[] TorrentGZHeader = new byte[] { 0x1f, 0x8b, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1c, 0x00 };
#endregion
#region Fields
/// <summary>
@@ -295,7 +316,7 @@ namespace SabreTools.FileTypes
if (i == 4 || i == 5 || i == 6 || i == 7 || i == 9)
continue;
correct &= (header[i] == Constants.TorrentGZHeader[i]);
correct &= (header[i] == TorrentGZHeader[i]);
}
if (!correct)
@@ -361,7 +382,7 @@ namespace SabreTools.FileTypes
{
continue;
}
correct &= (header[i] == Constants.TorrentGZHeader[i]);
correct &= (header[i] == TorrentGZHeader[i]);
}
if (!correct)
{
@@ -440,7 +461,7 @@ namespace SabreTools.FileTypes
BinaryWriter sw = new BinaryWriter(outputStream);
// Write standard header and TGZ info
byte[] data = Constants.TorrentGZHeader
byte[] data = TorrentGZHeader
.Concat(baseFile.MD5) // MD5
.Concat(baseFile.CRC) // CRC
.ToArray();