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Diffstat (limited to 'libjava/java/net/Inet6Address.java')
-rw-r--r-- | libjava/java/net/Inet6Address.java | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/libjava/java/net/Inet6Address.java b/libjava/java/net/Inet6Address.java new file mode 100644 index 0000000..de496b1 --- /dev/null +++ b/libjava/java/net/Inet6Address.java @@ -0,0 +1,272 @@ +/* Inet6Address.java + Copyright (C) 2002 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., 59 Temple Place, Suite 330, Boston, MA +02111-1307 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.io.IOException; + +/** + * @author Michael Koch + * @date August 3, 2002. + */ + +/* + * Written using on-line Java Platform 1.4 API Specification and + * RFC 1884 (http://www.ietf.org/rfc/rfc1884.txt) + * 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 + */ + protected Inet6Address (byte[] addr, String host) + { + super (null, host); + this.ipaddress = 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 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 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 ipaddress; + } + + /** + * 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); + boolean empty = sbuf.length () == 0; + + if (empty) + { + if (i > 0) + sbuf.append ("::"); + } + else + sbuf.append (':'); + + if (x != 0 || i >= 14) + 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 == null || ! (obj instanceof Inet6Address)) + return false; + + Inet6Address tmp = (Inet6Address) obj; + + return super.equals (tmp) + && this.ipaddress == tmp.ipaddress; + } + + /** + * 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; + } +} |