org.opennms.protocols.snmp

Class SnmpIPAddress

java.lang.Object

org.opennms.protocols.snmp.SnmpOctetString

org.opennms.protocols.snmp.SnmpIPAddress

All Implemented Interfaces:

Serializable, Cloneable, SnmpSyntax

public class SnmpIPAddress
extends SnmpOctetString

This SnmpIPAddress is used to extend the SNMP Octet String SMI class. This is normally used to transmit IP Addresses with a length of 4 bytes.

Most of the management of the data is handled by the base class.

Author:

Brian Weaver

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static byte	ASNTYPE Defines the ASN.1 type for this object.

Constructor Summary

Constructors

Constructor and Description
SnmpIPAddress() Constructs a default object with a length of zero.
SnmpIPAddress(byte[] data) Constructs an Application String with the passed data.
SnmpIPAddress(InetAddress inetAddr) Constructs a new instance of the class with the IP Address recovered from the passed address object.
SnmpIPAddress(SnmpIPAddress second) Copy constructor.
SnmpIPAddress(SnmpOctetString second) Copy constructor based on the base class.
SnmpIPAddress(String inetAddr) Constructs a new instance of the class with the IP address of the evaluated argument.

Method Summary

Modifier and Type	Method and Description
Object	clone() Create a new object that is a duplicate of the current object.
InetAddress	convertToIpAddress() Converts the current Application String to an IPv4Address object.
int	decodeASN(byte[] buf, int offset, AsnEncoder encoder) Decodes the ASN.1 octet string from the passed buffer.
SnmpSyntax	duplicate() Create a new object that is a duplicate of the current object.
void	setString(byte[] data) Sets the internal string array so that it is identical to the passed array.
void	setString(String data) Sets the internal octet string equal to the converted stirng via the method getBytes().
static InetAddress	toInetAddress(SnmpIPAddress val)
String	toString() Returns the application string as a IPv4 dotted decimal address
byte	typeId() Returns the ASN.1 type for this object.

Methods inherited from class org.opennms.protocols.snmp.SnmpOctetString

assumeString, encodeASN, equals, getLength, getString, hashCode, toDisplayString, toHexString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

ASNTYPE

public static final byte ASNTYPE

Defines the ASN.1 type for this object.

See Also:

Constant Field Values

Constructor Detail

SnmpIPAddress

public SnmpIPAddress()

Constructs a default object with a length of zero. See the super class constructor for more details.

SnmpIPAddress

public SnmpIPAddress(byte[] data)

Constructs an Application String with the passed data. The data is managed by the base class.

Parameters:

data - The application string to manage (UTF-8)

Throws:

InvalidParameterException - Thrown if the passed buffer is not exactly 4 octets in size.

SnmpIPAddress

public SnmpIPAddress(SnmpIPAddress second)

Copy constructor. Constructs a duplicate object based on the passed application string object.

Parameters:

second - The object to copy.

SnmpIPAddress

public SnmpIPAddress(SnmpOctetString second)

Copy constructor based on the base class.

Parameters:

second - The object to copy

Throws:

InvalidParameterException - Thrown if the passed buffer is not exactly 4 octets in size.

SnmpIPAddress

public SnmpIPAddress(InetAddress inetAddr)

Constructs a new instance of the class with the IP Address recovered from the passed address object.

Parameters:

inetAddr - The internet address instance that contains the IP Address.

SnmpIPAddress

public SnmpIPAddress(String inetAddr)
              throws SnmpBadConversionException

Constructs a new instance of the class with the IP address of the evaluated argument. The argument is evaluated by the InetAddressclass and the returned address is encoded in this instance.

Parameters:

inetAddr - The string encoded IP Address to encapsulate.

Throws:

SnmpBadConversionException - Thrown if the string address cannot be converted to an IP Address.

Method Detail

typeId

public byte typeId()

Returns the ASN.1 type for this object.

Specified by:

typeId in interface SnmpSyntax

Overrides:

typeId in class SnmpOctetString

Returns:

The ASN.1 value for this object.

duplicate

public SnmpSyntax duplicate()

Create a new object that is a duplicate of the current object.

Specified by:

duplicate in interface SnmpSyntax

Overrides:

duplicate in class SnmpOctetString

Returns:

A newly created duplicate object.

clone

public Object clone()

Create a new object that is a duplicate of the current object.

Overrides:

clone in class SnmpOctetString

Returns:

A newly created duplicate object.

setString

public void setString(byte[] data)

Sets the internal string array so that it is identical to the passed array. The array is actually copied so that changes to data after the construction of the object are not reflected in the SnmpOctetString Object.

If the buffer is not valid according to the SNMP SMI then an exception is thrown and the object is not modified.

Overrides:

setString in class SnmpOctetString

Parameters:

data - The new octet string data.

Throws:

InvalidParameterException - Thrown if the passed buffer is not valid against the SMI definition.

setString

public void setString(String data)

Sets the internal octet string equal to the converted stirng via the method getBytes(). This may cause some data corruption since the conversion is platform specific.

If the buffer is not valid according to the SNMP SMI then an exception is thrown and the object is not modified.

Overrides:

setString in class SnmpOctetString

Parameters:

data - The new octet string data.

Throws:

InvalidParameterException - Thrown if the passed buffer is not valid against the SMI definition.

See Also:

String.getBytes()

decodeASN

public int decodeASN(byte[] buf,
                     int offset,
                     AsnEncoder encoder)
              throws AsnDecodingException

Decodes the ASN.1 octet string from the passed buffer. If an error occurs during the decoding sequence then an AsnDecodingException is thrown by the method. The value is decoded using the AsnEncoder passed to the object.

Specified by:

decodeASN in interface SnmpSyntax

Overrides:

decodeASN in class SnmpOctetString

Parameters:

buf - The encode buffer

offset - The offset byte to begin decoding

encoder - The decoder object.

Returns:

The index of the byte immediantly after the last decoded byte of information.

Throws:

AsnDecodingException - Thrown by the encoder if an error occurs trying to decode the data buffer.

convertToIpAddress

public InetAddress convertToIpAddress()

Converts the current Application String to an IPv4Address object. If the length is not four bytes in length or an error occurs during the conversion then an exception is thrown.

Returns:

The IPv4Address converted from the application string

Throws:

RuntimeException - Thrown if the length of the string is invalid. Must be equal to four.

toString

public String toString()

Returns the application string as a IPv4 dotted decimal address

Overrides:

toString in class SnmpOctetString

toInetAddress

public static InetAddress toInetAddress(SnmpIPAddress val)