java.lang.Object
- ghidra.app.util.bin.format.mz.DOSHeader

All Implemented Interfaces:: Writeable, StructConverter

public class DOSHeader
extends java.lang.Object
implements StructConverter, Writeable

This class represents the IMAGE_DOS_HEADER struct as defined in winnt.h.

 typedef struct _IMAGE_DOS_HEADER {      // DOS .EXE header
     WORD   e_magic;                     // Magic number                                                                // MANDATORY
     WORD   e_cblp;                      // Bytes on last page of file
     WORD   e_cp;                        // Pages in file
     WORD   e_crlc;                      // Relocations
     WORD   e_cparhdr;                   // Size of header in paragraphs
     WORD   e_minalloc;                  // Minimum extra paragraphs needed
     WORD   e_maxalloc;                  // Maximum extra paragraphs needed
     WORD   e_ss;                        // Initial (relative) SS value
     WORD   e_sp;                        // Initial SP value
     WORD   e_csum;                      // Checksum
     WORD   e_ip;                        // Initial IP value
     WORD   e_cs;                        // Initial (relative) CS value
     WORD   e_lfarlc;                    // File address of relocation table
     WORD   e_ovno;                      // Overlay number
     WORD   e_res[4];                    // Reserved words
     WORD   e_oemid;                     // OEM identifier (for e_oeminfo)
     WORD   e_oeminfo;                   // OEM information; e_oemid specific
     WORD   e_res2[10];                  // Reserved words                                                      // MANDATORY
     LONG   e_lfanew;                    // File address of new exe header
 } IMAGE_DOS_HEADER, *PIMAGE_DOS_HEADER;

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`IMAGE_DOS_SIGNATURE`
`static java.lang.String`	`NAME`	The name to use when converting into a structure data type.
`static int`	`SIZEOF_DOS_HEADER`

Fields inherited from interface ghidra.app.util.bin.StructConverter
ASCII, BYTE, DWORD, IBO32, IBO64, POINTER, QWORD, STRING, UTF16, UTF8, VOID, WORD

Constructor Summary

Constructors
Constructor Description

DOSHeader()
DO NOT USE THIS CONSTRUCTOR, USE create*(GenericFactory ...) FACTORY METHODS INSTEAD.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static DOSHeader`	`createDOSHeader(FactoryBundledWithBinaryReader reader)`	Constructs a new DOS header.
`void`	`decrementStub(int start)`
`short`	`e_cblp()`	Returns the number of bytes on the last page of file.
`short`	`e_cp()`	Returns the number of pages in the file.
`short`	`e_cparhdr()`	Returns the size of header in paragraphs.
`short`	`e_crlc()`	Returns the number of relocations.
`short`	`e_cs()`	Returns the initial (relative) CS value.
`short`	`e_csum()`	Returns the checksum.
`short`	`e_ip()`	Returns the initial IP value.
`int`	`e_lfanew()`	Returns the file address of new EXE header.
`short`	`e_lfarlc()`	Returns the file address of relocation table.
`short`	`e_magic()`	Returns the magic number.
`short`	`e_maxalloc()`	Returns the maximum extra paragraphs needed.
`short`	`e_minalloc()`	Returns the minimum extra paragraphs needed.
`short`	`e_oemid()`	Returns the OEM identifier (for e_oeminfo).
`short`	`e_oeminfo()`	Returns the OEM information; e_oemid specific.
`short`	`e_ovno()`	Returns the overlay number.
`short[]`	`e_res()`	Returns the reserved words.
`short[]`	`e_res2()`	Returns the reserved words (2).
`short`	`e_sp()`	Returns the initial SP value.
`short`	`e_ss()`	Returns the initial (relative) SS value.
`java.lang.String`	`getProcessorName()`	Returns the processor name.
`int`	`getProgramLen()`	Returns the length (in bytes) of the DOS program.
`boolean`	`hasNewExeHeader()`	Returns true if a new EXE header exists.
`boolean`	`hasPeHeader()`	Returns true if a PE header exists.
`boolean`	`isDosSignature()`	Returns true if the DOS magic number is correct
`DataType`	`toDataType()`	Returns a structure datatype representing the contents of the implementor of this interface.
`void`	`write(java.io.RandomAccessFile raf, DataConverter dc)`	Writes this object to the specified random access file using the data converter to handle endianness.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - NAME
```
public static final java.lang.String NAME
```
    The name to use when converting into a structure data type.
    
    See Also:
    
    Constant Field Values
  - IMAGE_DOS_SIGNATURE
```
public static final int IMAGE_DOS_SIGNATURE
```
    See Also:
    
    Constant Field Values
  - SIZEOF_DOS_HEADER
```
public static final int SIZEOF_DOS_HEADER
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - DOSHeader
```
public DOSHeader()
```
    DO NOT USE THIS CONSTRUCTOR, USE create*(GenericFactory ...) FACTORY METHODS INSTEAD.
- Method Detail
  - createDOSHeader
```
public static DOSHeader createDOSHeader(FactoryBundledWithBinaryReader reader)
                                 throws java.io.IOException
```
    Constructs a new DOS header.
    
    Parameters:
    
    reader - the binary reader
    
    Throws:
    
    java.io.IOException
  - getProcessorName
```
public java.lang.String getProcessorName()
```
    Returns the processor name.
    
    Returns:
    
    the processor name
  - e_magic
```
public short e_magic()
```
    Returns the magic number.
    
    Returns:
    
    the magic number
  - e_cblp
```
public short e_cblp()
```
    Returns the number of bytes on the last page of file.
    
    Returns:
    
    the number of bytes on the last page of the file
  - e_cp
```
public short e_cp()
```
    Returns the number of pages in the file.
    
    Returns:
    
    the number of pages in the file
  - e_crlc
```
public short e_crlc()
```
    Returns the number of relocations.
    
    Returns:
    
    the number of relocations
  - e_cparhdr
```
public short e_cparhdr()
```
    Returns the size of header in paragraphs.
    
    Returns:
    
    the size of header in paragraphs
  - e_minalloc
```
public short e_minalloc()
```
    Returns the minimum extra paragraphs needed.
    
    Returns:
    
    the minimum extra paragraphs needed
  - e_maxalloc
```
public short e_maxalloc()
```
    Returns the maximum extra paragraphs needed.
    
    Returns:
    
    the maximum extra paragraphs needed
  - e_ss
```
public short e_ss()
```
    Returns the initial (relative) SS value.
    
    Returns:
    
    the initial (relative) SS value
  - e_sp
```
public short e_sp()
```
    Returns the initial SP value.
    
    Returns:
    
    the initial SP value
  - e_csum
```
public short e_csum()
```
    Returns the checksum.
    
    Returns:
    
    the checksum
  - e_ip
```
public short e_ip()
```
    Returns the initial IP value.
    
    Returns:
    
    the initial IP value
  - e_cs
```
public short e_cs()
```
    Returns the initial (relative) CS value.
    
    Returns:
    
    the initial (relative) CS value
  - e_lfarlc
```
public short e_lfarlc()
```
    Returns the file address of relocation table.
    
    Returns:
    
    the file address of relocation table
  - e_ovno
```
public short e_ovno()
```
    Returns the overlay number.
    
    Returns:
    
    the overlay number
  - e_res
```
public short[] e_res()
```
    Returns the reserved words.
    
    Returns:
    
    the reserved words
  - e_oemid
```
public short e_oemid()
```
    Returns the OEM identifier (for e_oeminfo).
    
    Returns:
    
    the OEM identifier (for e_oeminfo)
  - e_oeminfo
```
public short e_oeminfo()
```
    Returns the OEM information; e_oemid specific.
    
    Returns:
    
    the OEM information; e_oemid specific
  - e_res2
```
public short[] e_res2()
```
    Returns the reserved words (2).
    
    Returns:
    
    the reserved words (2)
  - e_lfanew
```
public int e_lfanew()
```
    Returns the file address of new EXE header.
    
    Returns:
    
    the file address of new EXE header
  - hasNewExeHeader
```
public boolean hasNewExeHeader()
```
    Returns true if a new EXE header exists.
    
    Returns:
    
    true if a new EXE header exists
  - hasPeHeader
```
public boolean hasPeHeader()
```
    Returns true if a PE header exists.
    
    Returns:
    
    true if a PE header exists
  - isDosSignature
```
public boolean isDosSignature()
```
    Returns true if the DOS magic number is correct
    
    Returns:
    
    true if the DOS magic number is correct
  - toDataType
```
public DataType toDataType()
                    throws DuplicateNameException
```
    Description copied from interface: StructConverter
    Returns a structure datatype representing the contents of the implementor of this interface.
    For example, given:
    class A { int foo; double bar; }
    
    The return value should be a structure data type with two data type components; an INT and a DOUBLE. The structure should contain field names and, if possible, field comments.
    Specified by:
    
    toDataType in interface StructConverter
    
    Returns:
    
    returns a structure datatype representing the implementor of this interface
    
    Throws:
    
    DuplicateNameException - when a datatype of the same name already exists
    
    See Also:
    
    StructConverter.toDataType()
  - getProgramLen
```
public int getProgramLen()
```
    Returns the length (in bytes) of the DOS program.
    In other words: e_lfanew() - SIZEOF_DOS_HEADER
    
    Returns:
    
    the length (in bytes)
  - decrementStub
```
public void decrementStub(int start)
```
  - write
```
public void write(java.io.RandomAccessFile raf,
                  DataConverter dc)
           throws java.io.IOException
```
    Description copied from interface: Writeable
    
    Writes this object to the specified random access file using the data converter to handle endianness.
    
    Specified by:
    
    write in interface Writeable
    
    Parameters:
    
    raf - the random access file
    
    dc - the data converter
    
    Throws:
    
    java.io.IOException - if an I/O error occurs
    
    See Also:
    
    Writeable.write(java.io.RandomAccessFile, ghidra.util.DataConverter)

Class DOSHeader

Field Summary

Fields inherited from interface ghidra.app.util.bin.StructConverter

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

NAME

IMAGE_DOS_SIGNATURE

SIZEOF_DOS_HEADER

Constructor Detail

DOSHeader

Method Detail

createDOSHeader

getProcessorName

e_magic

e_cblp

e_cp

e_crlc

e_cparhdr

e_minalloc

e_maxalloc

e_ss

e_sp

e_csum

e_ip

e_cs

e_lfarlc

e_ovno

e_res

e_oemid

e_oeminfo

e_res2

e_lfanew

hasNewExeHeader

hasPeHeader

isDosSignature

toDataType

getProgramLen

decrementStub

write