java.lang.Object
- com.sun.rpc.Xdr

```
public class Xdr
extends java.lang.Object
```
This class handles the marshalling/unmarshalling of primitive data types into and out of a buffer. The XDR buffer is a field within this class and its size is determined when the class is instantiated. Other than this buffer, there are just two pointers: "off" is the current XDR offset into the buffer and moves up the buffer by an integral number of XDRUNITs as data are encoded/decoded. The other pointer is "size" which is the number of valid data bytes in the buffer and is set only for received buffers. XXX we should perhaps check that off <= size whenever an item is decoded so that we can raise an exception if the received data is underlength.

Author:

Brent Callaghan

See Also:

Rpc

Constructor Summary

Constructors
Constructor Description

Xdr(int size)
Build a new Xdr object with a buffer of given size

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`xdr_bool()`	Get a boolean from the buffer
`void`	`xdr_bool(boolean b)`	Put a boolean into the buffer
`byte[]`	`xdr_buf()`	Return the entire Xdr buffer
`byte[]`	`xdr_bytes()`	Get a counted array of bytes from the buffer
`void`	`xdr_bytes(byte[] b)`	Put a counted array of bytes into the buffer.
`void`	`xdr_bytes(byte[] b, int len)`	Put a counted array of bytes into the buffer
`void`	`xdr_bytes(byte[] b, int boff, int len)`	Put a counted array of bytes into the buffer
`void`	`xdr_bytes(Xdr x)`	Put an Xdr buffer into the buffer This is used to encode the RPC credentials
`float`	`xdr_float()`	Get a floating point number from the buffer
`void`	`xdr_float(float f)`	Put a floating point number into the buffer
`long`	`xdr_hyper()`	Get a long from the buffer
`void`	`xdr_hyper(long i)`	Put a long into the buffer
`int`	`xdr_int()`	Get an integer from the buffer
`void`	`xdr_int(int i)`	Put an integer into the buffer
`int`	`xdr_offset()`	Return the current offset
`void`	`xdr_offset(int off)`	Set the current offset
`void`	`xdr_raw(byte[] b)`	Put a fixed number of bytes into the buffer The length is not encoded.
`void`	`xdr_raw(byte[] b, int off)`	Put a fixed number of bytes into the buffer at offset off.
`void`	`xdr_raw(byte[] b, int boff, int len)`	Put a counted array of bytes into the buffer.
`byte[]`	`xdr_raw(int len)`	Get a fixed number of bytes from the buffer e.g.
`byte[]`	`xdr_raw(int off, int len)`	Get a fixed number (len) of bytes from the buffer at offset off.
`int`	`xdr_size()`	Return the current size of the XDR buffer
`void`	`xdr_size(int size)`	Set the current size of the XDR buffer
`void`	`xdr_skip(int count)`	Skip a number of bytes.
`java.lang.String`	`xdr_string()`	Get a string from the buffer
`void`	`xdr_string(java.lang.String s)`	Put a string into the buffer
`long`	`xdr_u_int()`	Get an unsigned integer from the buffer Note that Java has no unsigned integer type so we must return it as a long.
`void`	`xdr_u_int(long i)`	Put an unsigned integer into the buffer Note that Java has no unsigned integer type so we must submit it as a long.
`int`	`xdr_wrap_offset()`	Return the starting point of the bytes that will be encrypted.
`void`	`xdr_wrap_offset(int off)`	Set the starting point of the bytes that will be encrypted.

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

- Constructor Detail
  - Xdr
```
public Xdr(int size)
```
    Build a new Xdr object with a buffer of given size
    
    Parameters:
    
    size - of the buffer in bytes
- Method Detail
  - xdr_skip
```
public void xdr_skip(int count)
```
    Skip a number of bytes.
    Note that the count is rounded up to the next XDRUNIT.
    
    Parameters:
    
    count - of the buffer in bytes
  - xdr_buf
```
public byte[] xdr_buf()
```
    Return the entire Xdr buffer
    
    Returns:
    
    Xdr buffer
  - xdr_offset
```
public int xdr_offset()
```
    Return the current offset
    
    Returns:
    
    offset
  - xdr_offset
```
public void xdr_offset(int off)
```
    Set the current offset
    
    Parameters:
    
    off - offset into XDR buffer
  - xdr_wrap_offset
```
public int xdr_wrap_offset()
```
    Return the starting point of the bytes that will be encrypted.
    
    Returns:
    
    offset for bytes to be encrypted
  - xdr_wrap_offset
```
public void xdr_wrap_offset(int off)
```
    Set the starting point of the bytes that will be encrypted.
  - xdr_size
```
public int xdr_size()
```
    Return the current size of the XDR buffer
    
    Returns:
    
    size
  - xdr_size
```
public void xdr_size(int size)
```
    Set the current size of the XDR buffer
    
    Parameters:
    
    size - of buffer
  - xdr_int
```
public int xdr_int()
```
    Get an integer from the buffer
    
    Returns:
    
    integer
  - xdr_int
```
public void xdr_int(int i)
```
    Put an integer into the buffer
    
    Parameters:
    
    i - Integer to store in XDR buffer.
  - xdr_u_int
```
public long xdr_u_int()
```
    Get an unsigned integer from the buffer
    Note that Java has no unsigned integer type so we must return it as a long.
    
    Returns:
    
    long
  - xdr_u_int
```
public void xdr_u_int(long i)
```
    Put an unsigned integer into the buffer Note that Java has no unsigned integer type so we must submit it as a long.
    
    Parameters:
    
    i - unsigned integer to store in XDR buffer.
  - xdr_hyper
```
public long xdr_hyper()
```
    Get a long from the buffer
    
    Returns:
    
    long
  - xdr_hyper
```
public void xdr_hyper(long i)
```
    Put a long into the buffer
    
    Parameters:
    
    i - long to store in XDR buffer
  - xdr_bool
```
public boolean xdr_bool()
```
    Get a boolean from the buffer
    
    Returns:
    
    boolean
  - xdr_bool
```
public void xdr_bool(boolean b)
```
    Put a boolean into the buffer
    
    Parameters:
    
    b - boolean
  - xdr_float
```
public float xdr_float()
```
    Get a floating point number from the buffer
    
    Returns:
    
    float
  - xdr_float
```
public void xdr_float(float f)
```
    Put a floating point number into the buffer
    
    Parameters:
    
    f - float
  - xdr_string
```
public java.lang.String xdr_string()
```
    Get a string from the buffer
    
    Returns:
    
    string
  - xdr_string
```
public void xdr_string(java.lang.String s)
```
    Put a string into the buffer
    
    Parameters:
    
    s - string
  - xdr_bytes
```
public byte[] xdr_bytes()
```
    Get a counted array of bytes from the buffer
    
    Returns:
    
    bytes
  - xdr_bytes
```
public void xdr_bytes(byte[] b)
```
    Put a counted array of bytes into the buffer. Note that the entire byte array is encoded.
    
    Parameters:
    
    b - byte array
  - xdr_bytes
```
public void xdr_bytes(byte[] b,
                      int len)
```
    Put a counted array of bytes into the buffer
    
    Parameters:
    
    b - byte array
    
    len - number of bytes to encode
  - xdr_bytes
```
public void xdr_bytes(byte[] b,
                      int boff,
                      int len)
```
    Put a counted array of bytes into the buffer
    
    Parameters:
    
    b - byte array
    
    boff - offset into byte array
    
    len - number of bytes to encode
  - xdr_bytes
```
public void xdr_bytes(Xdr x)
```
    Put an Xdr buffer into the buffer
    This is used to encode the RPC credentials
    
    Parameters:
    
    x - XDR buffer
  - xdr_raw
```
public byte[] xdr_raw(int len)
```
    Get a fixed number of bytes from the buffer e.g. an NFS v2 filehandle
    
    Parameters:
    
    len - Number of bytes to get
    
    Returns:
    
    byte array
  - xdr_raw
```
public byte[] xdr_raw(int off,
                      int len)
```
    Get a fixed number (len) of bytes from the buffer at offset off. Do not change any buffer indicators.
    
    Parameters:
    
    off - Offset of bytes to get from
    
    len - Number of bytes to copy
    
    Returns:
    
    byte array
  - xdr_raw
```
public void xdr_raw(byte[] b)
```
    Put a fixed number of bytes into the buffer The length is not encoded. e.g. an NFS v2 filehandle
    
    Parameters:
    
    b - byte array
  - xdr_raw
```
public void xdr_raw(byte[] b,
                    int off)
```
    Put a fixed number of bytes into the buffer at offset off. The length is not encoded.
    
    Parameters:
    
    b - byte array
    
    off - where to put the byte array
  - xdr_raw
```
public void xdr_raw(byte[] b,
                    int boff,
                    int len)
```
    Put a counted array of bytes into the buffer. The length is not encoded.
    
    Parameters:
    
    b - byte array
    
    boff - offset into byte array
    
    len - number of bytes to encode

Class Xdr

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Xdr

Method Detail

xdr_skip

xdr_buf

xdr_offset

xdr_offset

xdr_wrap_offset

xdr_wrap_offset

xdr_size

xdr_size

xdr_int

xdr_int

xdr_u_int

xdr_u_int

xdr_hyper

xdr_hyper

xdr_bool

xdr_bool

xdr_float

xdr_float

xdr_string

xdr_string

xdr_bytes

xdr_bytes

xdr_bytes

xdr_bytes

xdr_bytes

xdr_raw

xdr_raw

xdr_raw

xdr_raw

xdr_raw