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Add support for Amiga extensions to ISO9660.

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This commit is contained in:
Natalia Portillo
2017-10-09 12:31:39 +01:00
parent d6efae3143
commit 8fb732cc60
3 changed files with 58 additions and 0 deletions
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35
DiscImageChef.Filesystems/ISO9660/Consts.cs
View File

@@ -63,6 +63,7 @@ namespace DiscImageChef.Filesystems.ISO9660
const ulong ziso_header_cigam = 0x07D6DBC99653E437;
const ushort ziso_Magic = 0x5A46; // "ZF"
const ushort ziso_PagedZlib = 0x707A; // "pz"
const ushort Amiga_Magic = 0x4153; // "AS"
[Flags]
enum FileFlags : byte
@@ -232,5 +233,39 @@ namespace DiscImageChef.Filesystems.ISO9660
Effective = 1 << 6,
LongFormat = 1 << 7,
}
[Flags]
enum AmigaFlags : byte
{
Protection = 1 << 0,
Comment = 1 << 1,
CommentContinues = 1 << 2
}
[Flags]
enum AmigaMultiuser : byte
{
GroupDelete = 1 << 0,
GroupExec = 1 << 1,
GroupWrite = 1 << 2,
GroupRead = 1 << 3,
OtherDelete = 1 << 4,
OtherExec = 1 << 5,
OtherWrite = 1 << 6,
OtherRead = 1 << 7,
}
[Flags]
enum AmigaAttributes : byte
{
OwnerDelete = 1 << 0,
OwnerExec = 1 << 1,
OwnerWrite = 1 << 2,
OwnerRead = 1 << 3,
Archive = 1 << 4,
Reentrant = 1 << 5,
Script = 1 << 6,
Reserved = 1 << 7,
}
}
}

3
DiscImageChef.Filesystems/ISO9660/Info.cs
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@@ -258,6 +258,7 @@ namespace DiscImageChef.Filesystems.ISO9660
bool SUSP = false;
bool RRIP = false;
bool ziso = false;
bool Amiga = false;
List<ContinuationArea> contareas = new List<ContinuationArea>();
List<byte[]> refareas = new List<byte[]>();
StringBuilder suspInformation = new StringBuilder();
@@ -378,6 +379,7 @@ namespace DiscImageChef.Filesystems.ISO9660
nextSignature == RRIP_Timestamps || nextSignature == RRIP_Sparse;
ziso |= nextSignature == ziso_Magic;
Amiga |= nextSignature == Amiga_Magic;
sa_off += sa[sa_off + 2];
@@ -435,6 +437,7 @@ namespace DiscImageChef.Filesystems.ISO9660
nextSignature == RRIP_Timestamps || nextSignature == RRIP_Sparse;
ziso |= nextSignature == ziso_Magic;
Amiga |= nextSignature == Amiga_Magic;
ca_off += ca_data[ca_off + 2];
}

20
DiscImageChef.Filesystems/ISO9660/Structs.cs
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@@ -632,6 +632,26 @@ namespace DiscImageChef.Filesystems.ISO9660
public uint uncomp_len_be;
}
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct AmigaEntry
{
public ushort signature;
public byte length;
public byte version;
public AmigaFlags flags;
// Followed by AmigaProtection if present
// Followed by length-prefixed string for comment if present
}
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct AmigaProtection
{
public byte User;
public byte Reserved;
public AmigaMultiuser Multiuser;
public AmigaAttributes Protection;
}
struct DecodedVolumeDescriptor
{
public string SystemIdentifier;