isoinspect

type BootEntry struct {
	// Section is true for an entry introduced by a section header; false for the
	// initial/default entry.
	Section bool
	// PlatformID is the entry's platform: 0x00 BIOS, 0xEF UEFI. For the default
	// entry this is the validation entry's platform.
	PlatformID uint8
	Bootable   bool
	MediaType  uint8 // 0 = no emulation
	// SectorCount is the El Torito "sector count": the number of 512-byte virtual
	// sectors of the boot image. For a UEFI entry this is the size of the FAT EFI
	// System Partition image the firmware exposes.
	SectorCount uint16
	// LoadRBA is the logical block (2048-byte) where the boot image begins.
	LoadRBA uint32
	// ImageIsFAT/ImageIsX86Boot describe the bytes at LoadRBA.
	ImageIsFAT     bool
	ImageIsX86Boot bool
}

type ElToritoInfo struct {
	// Present is false when the image has no El Torito boot record.
	Present              bool
	CatalogSector        uint32
	ValidationPlatform   uint8
	ValidationChecksumOK bool
	Entries              []BootEntry
	// UEFI and BIOS point to the resolved boot entries of each kind, if present.
	UEFI *BootEntry
	BIOS *BootEntry
}

type ISO9660Info struct {
	Present      bool
	VolumeID     string
	VolumeBlocks uint32
	RootEntries  []string
	HasJoliet    bool
}

type Issue struct {
	Severity Severity
	// Area is the structure the issue concerns: "iso9660", "eltorito", or "udf".
	Area string
	// Path is the file path within the UDF tree the issue concerns, when
	// applicable (otherwise empty).
	Path    string
	Message string
}

type Report struct {
	Path     string
	Size     int64
	ISO9660  *ISO9660Info
	ElTorito *ElToritoInfo
	UDF      *UDFInfo
	Issues   []Issue
}

type Severity string

type UDFFile struct {
	Path    string
	Size    int64
	Extents int // number of allocation descriptors describing the data
}

type UDFInfo struct {
	Present         bool
	UDFRevision     uint16 // e.g. 0x0102 for UDF 1.02
	VolumeID        string
	PartitionStart  uint32 // absolute sector of partition logical block 0
	PartitionBlocks uint32
	RootFEBlock     uint32 // partition-relative block of the root File Entry
	Files           []UDFFile
	FileCount       int
	DirCount        int
}