d2mpq

package

v0.0.0-...-c8cfab0 Latest Latest Go to latest Published: Dec 22, 2019 License: GPL-3.0 Imports: 16 Imported by: 0

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Repository

github.com/OpenDiablo2/D2Shared

Documentation ¶

Index ¶

Variables
func InitializeCryptoBuffer()
type BlockTableEntry
- func (v BlockTableEntry) HasFlag(flag FileFlag) bool
type Data
type FileFlag
type HashEntryMap
type HashTableEntry
type MPQ
- func Load(fileName string) (*MPQ, error)
type MpqFileRecord
type PatchInfo
type Stream
- func CreateStream(mpq MPQ, blockTableEntry BlockTableEntry, fileName string) (*Stream, error)
- func (v *Stream) Read(buffer []byte, offset, count uint32) uint32

Constants ¶

This section is empty.

Variables ¶

View Source

var CryptoBuffer [0x500]uint32

CryptoBuffer contains the crypto bytes for filename hashing

Functions ¶

func InitializeCryptoBuffer ¶

func InitializeCryptoBuffer()

InitializeCryptoBuffer initializes the crypto buffer

Types ¶

type BlockTableEntry ¶

type BlockTableEntry struct {
	FilePosition         uint32
	CompressedFileSize   uint32
	UncompressedFileSize uint32
	Flags                FileFlag
	// Local Stuff...
	FileName       string
	EncryptionSeed uint32
}

BlockTableEntry represents an entry in the block table

func (BlockTableEntry) HasFlag ¶

func (v BlockTableEntry) HasFlag(flag FileFlag) bool

HasFlag returns true if the specified flag is present

type Data ¶

type Data struct {
	Magic             [4]byte
	HeaderSize        uint32
	ArchiveSize       uint32
	FormatVersion     uint16
	BlockSize         uint16
	HashTableOffset   uint32
	BlockTableOffset  uint32
	HashTableEntries  uint32
	BlockTableEntries uint32
}

Data Represents a MPQ file

type FileFlag ¶

type FileFlag uint32

FileFlag represents flags for a file record in the MPQ archive

const (
	// FileImplode - File is compressed using PKWARE Data compression library
	FileImplode FileFlag = 0x00000100
	// FileCompress - File is compressed using combination of compression methods
	FileCompress FileFlag = 0x00000200
	// FileEncrypted - The file is encrypted
	FileEncrypted FileFlag = 0x00010000
	// FileFixKey - The decryption key for the file is altered according to the position of the file in the archive
	FileFixKey FileFlag = 0x00020000
	// FilePatchFile - The file contains incremental patch for an existing file in base MPQ
	FilePatchFile FileFlag = 0x00100000
	// FileSingleUnit - Instead of being divided to 0x1000-bytes blocks, the file is stored as single unit
	FileSingleUnit FileFlag = 0x01000000
	// FileDeleteMarker - File is a deletion marker, indicating that the file no longer exists. This is used to allow patch
	// archives to delete files present in lower-priority archives in the search chain. The file usually
	// has length of 0 or 1 byte and its name is a hash
	FileDeleteMarker FileFlag = 0x02000000
	// FileSectorCrc - File has checksums for each sector. Ignored if file is not compressed or imploded.
	FileSectorCrc FileFlag = 0x04000000
	// FileExists - Set if file exists, reset when the file was deleted
	FileExists FileFlag = 0x80000000
)

type HashEntryMap ¶

type HashEntryMap struct {
	// contains filtered or unexported fields
}

func (*HashEntryMap) Contains ¶

func (hem *HashEntryMap) Contains(fileName string) bool

func (*HashEntryMap) Find ¶

func (hem *HashEntryMap) Find(fileName string) (*HashTableEntry, bool)

func (*HashEntryMap) Insert ¶

func (hem *HashEntryMap) Insert(entry *HashTableEntry)

type HashTableEntry ¶

type HashTableEntry struct {
	NamePartA  uint32
	NamePartB  uint32
	Locale     uint16
	Platform   uint16
	BlockIndex uint32
}

HashTableEntry represents a hashed file entry in the MPQ file

type MPQ ¶

type MPQ struct {
	FileName          string
	File              *os.File
	HashEntryMap      HashEntryMap
	BlockTableEntries []BlockTableEntry
	Data              Data
}

MPQ represents an MPQ archive

func Load ¶

func Load(fileName string) (*MPQ, error)

Load loads an MPQ file and returns a MPQ structure

func (*MPQ) Close ¶

func (v *MPQ) Close()

Close closes the MPQ file

func (MPQ) FileExists ¶

func (v MPQ) FileExists(fileName string) bool

func (MPQ) GetFileList ¶

func (v MPQ) GetFileList() ([]string, error)

GetFileList returns the list of files in this MPQ

func (MPQ) ReadFile ¶

func (v MPQ) ReadFile(fileName string) ([]byte, error)

ReadFile reads a file from the MPQ and returns a memory stream

func (MPQ) ReadTextFile ¶

func (v MPQ) ReadTextFile(fileName string) (string, error)

ReadTextFile reads a file and returns it as a string

type MpqFileRecord ¶

type MpqFileRecord struct {
	MpqFile          string
	IsPatch          bool
	UnpatchedMpqFile string
}

type PatchInfo ¶

type PatchInfo struct {
	Length   uint32   // Length of patch info header, in bytes
	Flags    uint32   // Flags. 0x80000000 = MD5 (?)
	DataSize uint32   // Uncompressed size of the patch file
	Md5      [16]byte // MD5 of the entire patch file after decompression
}

type Stream ¶

type Stream struct {
	MPQData           MPQ
	BlockTableEntry   BlockTableEntry
	FileName          string
	EncryptionSeed    uint32
	BlockPositions    []uint32
	CurrentPosition   uint32
	CurrentData       []byte
	CurrentBlockIndex uint32
	BlockSize         uint32
}

Stream represents a stream of data in an MPQ archive

func CreateStream ¶

func CreateStream(mpq MPQ, blockTableEntry BlockTableEntry, fileName string) (*Stream, error)

CreateStream creates an MPQ stream

func (*Stream) Read ¶

func (v *Stream) Read(buffer []byte, offset, count uint32) uint32

Source Files ¶

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