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Diffstat (limited to 'libjava/classpath/java/net/Inet6Address.java')
-rw-r--r-- | libjava/classpath/java/net/Inet6Address.java | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/libjava/classpath/java/net/Inet6Address.java b/libjava/classpath/java/net/Inet6Address.java new file mode 100644 index 0000000..0d62fe9 --- /dev/null +++ b/libjava/classpath/java/net/Inet6Address.java @@ -0,0 +1,261 @@ +/* Inet6Address.java -- + Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.net; + +import java.util.Arrays; + +/* + * Written using on-line Java Platform 1.4 API Specification and + * RFC 1884 (http://www.ietf.org/rfc/rfc1884.txt) + * + * @author Michael Koch + * @status Believed complete and correct. + */ +public final class Inet6Address extends InetAddress +{ + static final long serialVersionUID = 6880410070516793377L; + + /** + * Needed for serialization + */ + byte[] ipaddress; + + /** + * Create an Inet6Address object + * + * @param addr The IP address + * @param host The hostname + */ + Inet6Address(byte[] addr, String host) + { + super(addr, host); + // Super constructor clones the addr. Get a reference to the clone. + this.ipaddress = this.addr; + } + + /** + * Utility routine to check if the InetAddress is an IP multicast address + * + * @since 1.1 + */ + public boolean isMulticastAddress() + { + return ipaddress[0] == 0xFF; + } + + /** + * Utility routine to check if the InetAddress in a wildcard address + * + * @since 1.4 + */ + public boolean isAnyLocalAddress() + { + byte[] anylocal = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; + + return Arrays.equals(ipaddress, anylocal); + } + + /** + * Utility routine to check if the InetAddress is a loopback address + * + * @since 1.4 + */ + public boolean isLoopbackAddress() + { + byte[] loopback = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }; + + return Arrays.equals(ipaddress, loopback); + } + + /** + * Utility routine to check if the InetAddress is an link local address + * + * @since 1.4 + */ + public boolean isLinkLocalAddress() + { + return ipaddress[0] == 0xFA; + } + + /** + * Utility routine to check if the InetAddress is a site local address + * + * @since 1.4 + */ + public boolean isSiteLocalAddress() + { + return ipaddress[0] == 0xFB; + } + + /** + * Utility routine to check if the multicast address has global scope + * + * @since 1.4 + */ + public boolean isMCGlobal() + { + if (! isMulticastAddress()) + return false; + + return (ipaddress[1] & 0x0F) == 0xE; + } + + /** + * Utility routine to check if the multicast address has node scope + * + * @since 1.4 + */ + public boolean isMCNodeLocal() + { + if (! isMulticastAddress()) + return false; + + return (ipaddress[1] & 0x0F) == 0x1; + } + + /** + * Utility routine to check if the multicast address has link scope + * + * @since 1.4 + */ + public boolean isMCLinkLocal() + { + if (! isMulticastAddress()) + return false; + + return (ipaddress[1] & 0x0F) == 0x2; + } + + /** + * Utility routine to check if the multicast address has site scope + * + * @since 1.4 + */ + public boolean isMCSiteLocal() + { + if (! isMulticastAddress()) + return false; + + return (ipaddress[1] & 0x0F) == 0x5; + } + + /** + * Utility routine to check if the multicast address has organization scope + * + * @since 1.4 + */ + public boolean isMCOrgLocal() + { + if (! isMulticastAddress()) + return false; + + return (ipaddress[1] & 0x0F) == 0x8; + } + + /** + * Returns the raw IP address of this InetAddress object. The result is in + * network byte order: the highest order byte of the address is i + * n getAddress()[0] + */ + public byte[] getAddress() + { + return (byte[]) ipaddress.clone(); + } + + /** + * Returns the IP address string in textual presentation + */ + public String getHostAddress() + { + StringBuffer sbuf = new StringBuffer(40); + + for (int i = 0; i < 16; i += 2) + { + int x = ((ipaddress[i] & 0xFF) << 8) | (ipaddress[i + 1] & 0xFF); + + if (i > 0) + sbuf.append(':'); + + sbuf.append(Integer.toHexString(x)); + } + + return sbuf.toString(); + } + + /** + * Returns a hashcode for this IP address + */ + public int hashCode() + { + return super.hashCode(); + } + + /** + * Compares this object against the specified object + */ + public boolean equals(Object obj) + { + if (! (obj instanceof Inet6Address)) + return false; + + // this.ipaddress is never set in this class except to + // the value of the super class' addr. The super classes + // equals(Object) will do the compare. + return super.equals(obj); + } + + /** + * Utility routine to check if the InetAddress is an + * IPv4 compatible IPv6 address + * + * @since 1.4 + */ + public boolean isIPv4CompatibleAddress() + { + if (ipaddress[0] != 0x00 || ipaddress[1] != 0x00 || ipaddress[2] != 0x00 + || ipaddress[3] != 0x00 || ipaddress[4] != 0x00 + || ipaddress[5] != 0x00 || ipaddress[6] != 0x00 + || ipaddress[7] != 0x00 || ipaddress[8] != 0x00 + || ipaddress[9] != 0x00 || ipaddress[10] != 0x00 + || ipaddress[11] != 0x00) + return false; + + return true; + } +} |