Method StfsInit

stfschk/StfsFileSystem.cs:133–288

()

        }

        public void StfsInit()
        {
            if (Position == 0)
                Position = Stream.Position;

            // Read in XContent/PEC header if the volume descriptor isn't already set:
            if (StfsVolumeDescriptor.DescriptorLength != 0x24)
            {
                Stream.Position = Position;
                PecHeader = Stream.ReadStruct<PEC_HEADER>();
                PecHeader.EndianSwap();
                if (PecHeader.ConsoleSignature.IsStructureValid)
                {
                    IsXContent = false;
                    IsConsoleSigned = true;
                    ConsoleSignature = PecHeader.ConsoleSignature;
                    StfsVolumeDescriptor = PecHeader.StfsVolumeDescriptor;
                }
                else
                {
                    IsXContent = true;
                    Stream.Seek(0, SeekOrigin.Begin);

                    Header = Stream.ReadStruct<XCONTENT_HEADER>();
                    Header.EndianSwap();

                    if (Header.SignatureType != XCONTENT_HEADER.kSignatureTypeConBE &&
                        Header.SignatureType != XCONTENT_HEADER.kSignatureTypeLiveBE &&
                        Header.SignatureType != XCONTENT_HEADER.kSignatureTypePirsBE)
                        throw new FileSystemParseException("File has invalid header magic");

                    if (Header.SizeOfHeaders == 0)
                        throw new FileSystemParseException("Package doesn't contain STFS filesystem");

                    if (Header.SignatureType == XCONTENT_HEADER.kSignatureTypeConBE)
                    {
                        IsConsoleSigned = true;
                        ConsoleSignature = Header.ConsoleSignature;
                    }

                    byte[] headerRaw = new byte[0x118];
                    Stream.Position = 0x22C;
                    Stream.Read(headerRaw, 0, 0x118);
                    headerSha1 = Sha1.ComputeHash(headerRaw);

                    var metadataEnd = (int)(Utility.RoundToPages(Header.SizeOfHeaders, kSectorSize) * kSectorSize);

                    byte[] metadataRaw = new byte[metadataEnd - 0x344];
                    Stream.Position = 0x344;
                    Stream.Read(metadataRaw, 0, metadataEnd - 0x344);

                    contentIdValid = Sha1.ComputeHash(metadataRaw).BytesMatch(Header.ContentId);

                    Stream.Position = 0x344;
                    Metadata = Stream.ReadStruct<XCONTENT_METADATA>();
                    Metadata.EndianSwap();

                    if (Header.SizeOfHeaders > 0x971A)