Package org.apache.sshd.contrib.server.session.proxyprotocolv2.data

Class AddressData

java.lang.Object

org.apache.sshd.contrib.server.session.proxyprotocolv2.data.AddressData

public final class AddressData
extends Object

Address data structure.

Starting from the 17th byte, addresses are presented in network byte order.

The address order is always the same : - source layer 3 address in network byte order - destination layer 3 address in network byte order - source layer 4 address if any, in network byte order (port) - destination layer 4 address if any, in network byte order (port)

The address block may directly be sent from or received into the following union which makes it easy to cast from/to the relevant socket native structs depending on the address type :

     union proxy_addr {
         struct {        // for TCP/UDP over IPv4, len = 12
             uint32_t src_addr;
             uint32_t dst_addr;
             uint16_t src_port;
             uint16_t dst_port;
         }ipv4_addr;
         struct{        // for TCP/UDP over IPv6, len = 36
             uint8_t src_addr[16];
             uint8_t dst_addr[16];
             uint16_t src_port;
             uint16_t dst_port;
         }ipv6_addr;
         struct{        // for AF_UNIX sockets, len = 216
             uint8_t src_addr[108];
             uint8_t dst_addr[108];
         }unix_addr;
     };
 

Field Summary

Fields

Modifier and Type	Field	Description
private final String	dstAddress
private final int	dstPort
private final String	srcAddress
private final int	srcPort

Constructor Summary

Constructors

Modifier	Constructor	Description
private	AddressData(String srcAddress, String dstAddress, int srcPort, int dstPort)

Method Summary

Modifier and Type	Method	Description
static AddressData	extractAddressData(org.slf4j.Logger logger, ServerSession session, Buffer buffer, FamilyAndTransport familyAndTransport, int dataLength)
private static String	extractAddresses(Buffer buffer, FamilyAndTransport familyAndTransport)
private static int	extractPort(Buffer buffer, FamilyAndTransport familyAndTransport)
static void	skipUnprocessedData(org.slf4j.Logger logger, ServerSession session, Buffer buffer, FamilyAndTransport familyAndTransport, int dataLength)
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

srcAddress

private final String srcAddress

dstAddress

private final String dstAddress

srcPort

private final int srcPort

dstPort

private final int dstPort

Constructor Details

AddressData

private AddressData(String srcAddress,
 String dstAddress,
 int srcPort,
 int dstPort)

Method Details

extractAddressData

public static AddressData extractAddressData(org.slf4j.Logger logger,
 ServerSession session,
 Buffer buffer,
 FamilyAndTransport familyAndTransport,
 int dataLength)
                                      throws IOException

Throws:

IOException

skipUnprocessedData

public static void skipUnprocessedData(org.slf4j.Logger logger,
 ServerSession session,
 Buffer buffer,
 FamilyAndTransport familyAndTransport,
 int dataLength)

extractAddresses

private static String extractAddresses(Buffer buffer,
 FamilyAndTransport familyAndTransport)
                                throws IOException

Throws:

IOException

extractPort

private static int extractPort(Buffer buffer,
 FamilyAndTransport familyAndTransport)

toString

public String toString()

Overrides:

toString in class Object