| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package java.net; |
| |
| import java.io.ObjectInputStream; |
| import java.io.IOException; |
| import java.io.InvalidObjectException; |
| import java.util.Enumeration; |
| import libcore.io.Libcore; |
| import static android.system.OsConstants.*; |
| |
| /** |
| * This class represents an Internet Protocol version 6 (IPv6) address. |
| * Defined by <a href="http://www.ietf.org/rfc/rfc2373.txt"> |
| * <i>RFC 2373: IP Version 6 Addressing Architecture</i></a>. |
| * |
| * <h4> <A NAME="format">Textual representation of IP addresses</a> </h4> |
| * |
| * Textual representation of IPv6 address used as input to methods |
| * takes one of the following forms: |
| * |
| * <ol> |
| * <li><p> <A NAME="lform">The preferred form</a> is x:x:x:x:x:x:x:x, |
| * where the 'x's are |
| * the hexadecimal values of the eight 16-bit pieces of the |
| * address. This is the full form. For example, |
| * |
| * <blockquote><table cellpadding=0 cellspacing=0 summary="layout"> |
| * <tr><td><tt>1080:0:0:0:8:800:200C:417A</tt><td></tr> |
| * </table></blockquote> |
| * |
| * <p> Note that it is not necessary to write the leading zeros in |
| * an individual field. However, there must be at least one numeral |
| * in every field, except as described below.</li> |
| * |
| * <li><p> Due to some methods of allocating certain styles of IPv6 |
| * addresses, it will be common for addresses to contain long |
| * strings of zero bits. In order to make writing addresses |
| * containing zero bits easier, a special syntax is available to |
| * compress the zeros. The use of "::" indicates multiple groups |
| * of 16-bits of zeros. The "::" can only appear once in an address. |
| * The "::" can also be used to compress the leading and/or trailing |
| * zeros in an address. For example, |
| * |
| * <blockquote><table cellpadding=0 cellspacing=0 summary="layout"> |
| * <tr><td><tt>1080::8:800:200C:417A</tt><td></tr> |
| * </table></blockquote> |
| * |
| * <li><p> An alternative form that is sometimes more convenient |
| * when dealing with a mixed environment of IPv4 and IPv6 nodes is |
| * x:x:x:x:x:x:d.d.d.d, where the 'x's are the hexadecimal values |
| * of the six high-order 16-bit pieces of the address, and the 'd's |
| * are the decimal values of the four low-order 8-bit pieces of the |
| * standard IPv4 representation address, for example, |
| * |
| * <blockquote><table cellpadding=0 cellspacing=0 summary="layout"> |
| * <tr><td><tt>::FFFF:129.144.52.38</tt><td></tr> |
| * <tr><td><tt>::129.144.52.38</tt><td></tr> |
| * </table></blockquote> |
| * |
| * <p> where "::FFFF:d.d.d.d" and "::d.d.d.d" are, respectively, the |
| * general forms of an IPv4-mapped IPv6 address and an |
| * IPv4-compatible IPv6 address. Note that the IPv4 portion must be |
| * in the "d.d.d.d" form. The following forms are invalid: |
| * |
| * <blockquote><table cellpadding=0 cellspacing=0 summary="layout"> |
| * <tr><td><tt>::FFFF:d.d.d</tt><td></tr> |
| * <tr><td><tt>::FFFF:d.d</tt><td></tr> |
| * <tr><td><tt>::d.d.d</tt><td></tr> |
| * <tr><td><tt>::d.d</tt><td></tr> |
| * </table></blockquote> |
| * |
| * <p> The following form: |
| * |
| * <blockquote><table cellpadding=0 cellspacing=0 summary="layout"> |
| * <tr><td><tt>::FFFF:d</tt><td></tr> |
| * </table></blockquote> |
| * |
| * <p> is valid, however it is an unconventional representation of |
| * the IPv4-compatible IPv6 address, |
| * |
| * <blockquote><table cellpadding=0 cellspacing=0 summary="layout"> |
| * <tr><td><tt>::255.255.0.d</tt><td></tr> |
| * </table></blockquote> |
| * |
| * <p> while "::d" corresponds to the general IPv6 address |
| * "0:0:0:0:0:0:0:d".</li> |
| * </ol> |
| * |
| * <p> For methods that return a textual representation as output |
| * value, the full form is used. Inet6Address will return the full |
| * form because it is unambiguous when used in combination with other |
| * textual data. |
| * |
| * <h4> Special IPv6 address </h4> |
| * |
| * <blockquote> |
| * <table cellspacing=2 summary="Description of IPv4-mapped address"> <tr><th valign=top><i>IPv4-mapped address</i></th> |
| * <td>Of the form::ffff:w.x.y.z, this IPv6 address is used to |
| * represent an IPv4 address. It allows the native program to |
| * use the same address data structure and also the same |
| * socket when communicating with both IPv4 and IPv6 nodes. |
| * |
| * <p>In InetAddress and Inet6Address, it is used for internal |
| * representation; it has no functional role. Java will never |
| * return an IPv4-mapped address. These classes can take an |
| * IPv4-mapped address as input, both in byte array and text |
| * representation. However, it will be converted into an IPv4 |
| * address.</td></tr> |
| * </table></blockquote> |
| * <p> |
| * <h4> <A NAME="scoped">Textual representation of IPv6 scoped addresses</a> </h4> |
| * <p> |
| * The textual representation of IPv6 addresses as described above can be extended |
| * to specify IPv6 scoped addresses. This extension to the basic addressing architecture |
| * is described in [draft-ietf-ipngwg-scoping-arch-04.txt]. |
| * <p> |
| * Because link-local and site-local addresses are non-global, it is possible that different hosts |
| * may have the same destination address and may be reachable through different interfaces on the |
| * same originating system. In this case, the originating system is said to be connected |
| * to multiple zones of the same scope. In order to disambiguate which is the intended destination |
| * zone, it is possible to append a zone identifier (or <i>scope_id</i>) to an IPv6 address. |
| * <p> |
| * The general format for specifying the <i>scope_id</i> is the following: |
| * <p><blockquote><i>IPv6-address</i>%<i>scope_id</i></blockquote> |
| * <p> The IPv6-address is a literal IPv6 address as described above. |
| * The <i>scope_id</i> refers to an interface on the local system, and it can be specified |
| * in two ways. |
| * <p><ol><li><i>As a numeric identifier.</i> This must be a positive integer that identifies the |
| * particular interface and scope as understood by the system. Usually, the numeric |
| * values can be determined through administration tools on the system. Each interface may |
| * have multiple values, one for each scope. If the scope is unspecified, then the default value |
| * used is zero.</li><p> |
| * <li><i>As a string.</i> This must be the exact string that is returned by |
| * {@link java.net.NetworkInterface#getName()} for the particular interface in question. |
| * When an Inet6Address is created in this way, the numeric scope-id is determined at the time |
| * the object is created by querying the relevant NetworkInterface.</li> |
| * </ol><p> |
| * Note also, that the numeric <i>scope_id</i> can be retrieved from Inet6Address instances returned from the |
| * NetworkInterface class. This can be used to find out the current scope ids configured on the system. |
| * @since 1.4 |
| */ |
| |
| public final |
| class Inet6Address extends InetAddress { |
| final static int INADDRSZ = 16; |
| |
| /** @hide */ |
| public static final InetAddress ANY = |
| new Inet6Address(null, new byte[] {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0); |
| |
| /** @hide */ |
| public static final InetAddress LOOPBACK = new Inet6Address("localhost", |
| new byte[] {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}, 0); |
| |
| |
| /* |
| * cached scope_id - for link-local address use only. |
| */ |
| private transient int cached_scope_id = 0; |
| |
| /** |
| * Holds a 128-bit (16 bytes) IPv6 address. |
| * |
| * @serial |
| */ |
| byte[] ipaddress; |
| |
| /** |
| * scope_id. The scope specified when the object is created. If the object is created |
| * with an interface name, then the scope_id is not determined until the time it is needed. |
| */ |
| private int scope_id = 0; |
| |
| /** |
| * This will be set to true when the scope_id field contains a valid |
| * integer scope_id. |
| */ |
| private boolean scope_id_set = false; |
| |
| /** |
| * scoped interface. scope_id is derived from this as the scope_id of the first |
| * address whose scope is the same as this address for the named interface. |
| */ |
| private transient NetworkInterface scope_ifname = null; |
| |
| /** |
| * set if the object is constructed with a scoped interface instead of a |
| * numeric scope id. |
| */ |
| private boolean scope_ifname_set = false; |
| |
| private static final long serialVersionUID = 6880410070516793377L; |
| |
| /* |
| * Perform initializations. |
| */ |
| static { |
| init(); |
| } |
| |
| Inet6Address() { |
| super(); |
| holder().hostName = null; |
| ipaddress = new byte[INADDRSZ]; |
| holder().family = AF_INET6; |
| } |
| |
| /* checking of value for scope_id should be done by caller |
| * scope_id must be >= 0, or -1 to indicate not being set |
| */ |
| Inet6Address(String hostName, byte addr[], int scope_id) { |
| holder().hostName = hostName; |
| if (addr.length == INADDRSZ) { // normal IPv6 address |
| holder().family = AF_INET6; |
| ipaddress = addr.clone(); |
| } |
| // Android change, was >= 0. |
| if (scope_id > 0) { |
| this.scope_id = scope_id; |
| scope_id_set = true; |
| } |
| } |
| |
| Inet6Address(String hostName, byte addr[]) { |
| try { |
| initif (hostName, addr, null); |
| } catch (UnknownHostException e) {} /* cant happen if ifname is null */ |
| } |
| |
| Inet6Address (String hostName, byte addr[], NetworkInterface nif) throws UnknownHostException { |
| initif (hostName, addr, nif); |
| } |
| |
| Inet6Address (String hostName, byte addr[], String ifname) throws UnknownHostException { |
| initstr (hostName, addr, ifname); |
| } |
| |
| /** |
| * Create an Inet6Address in the exact manner of {@link InetAddress#getByAddress(String,byte[])} |
| * except that the IPv6 scope_id is set to the value corresponding to the given interface |
| * for the address type specified in <code>addr</code>. |
| * The call will fail with an UnknownHostException if the given interface does not have a numeric |
| * scope_id assigned for the given address type (eg. link-local or site-local). |
| * See <a href="Inet6Address.html#scoped">here</a> for a description of IPv6 |
| * scoped addresses. |
| * |
| * @param host the specified host |
| * @param addr the raw IP address in network byte order |
| * @param nif an interface this address must be associated with. |
| * @return an Inet6Address object created from the raw IP address. |
| * @exception UnknownHostException if IP address is of illegal length, or if the interface |
| * does not have a numeric scope_id assigned for the given address type. |
| * |
| * @since 1.5 |
| */ |
| |
| public static Inet6Address getByAddress(String host, byte[] addr, NetworkInterface nif) |
| throws UnknownHostException { |
| if (host != null && host.length() > 0 && host.charAt(0) == '[') { |
| if (host.charAt(host.length()-1) == ']') { |
| host = host.substring(1, host.length() -1); |
| } |
| } |
| if (addr != null) { |
| if (addr.length == Inet6Address.INADDRSZ) { |
| return new Inet6Address(host, addr, nif); |
| } |
| } |
| throw new UnknownHostException("addr is of illegal length"); |
| } |
| |
| /** |
| * Create an Inet6Address in the exact manner of {@link InetAddress#getByAddress(String,byte[])} |
| * except that the IPv6 scope_id is set to the given numeric value. |
| * The scope_id is not checked to determine if it corresponds to any interface on the system. |
| * See <a href="Inet6Address.html#scoped">here</a> for a description of IPv6 |
| * scoped addresses. |
| * |
| * @param host the specified host |
| * @param addr the raw IP address in network byte order |
| * @param scope_id the numeric scope_id for the address. |
| * @return an Inet6Address object created from the raw IP address. |
| * @exception UnknownHostException if IP address is of illegal length. |
| * |
| * @since 1.5 |
| */ |
| |
| public static Inet6Address getByAddress(String host, byte[] addr, int scope_id) |
| throws UnknownHostException { |
| if (host != null && host.length() > 0 && host.charAt(0) == '[') { |
| if (host.charAt(host.length()-1) == ']') { |
| host = host.substring(1, host.length() -1); |
| } |
| } |
| if (addr != null) { |
| if (addr.length == Inet6Address.INADDRSZ) { |
| return new Inet6Address(host, addr, scope_id); |
| } |
| } |
| throw new UnknownHostException("addr is of illegal length"); |
| } |
| |
| private void initstr (String hostName, byte addr[], String ifname) throws UnknownHostException { |
| try { |
| NetworkInterface nif = NetworkInterface.getByName (ifname); |
| if (nif == null) { |
| throw new UnknownHostException ("no such interface " + ifname); |
| } |
| initif (hostName, addr, nif); |
| } catch (SocketException e) { |
| throw new UnknownHostException ("SocketException thrown" + ifname); |
| } |
| } |
| |
| private void initif(String hostName, byte addr[],NetworkInterface nif) throws UnknownHostException { |
| holder().hostName = hostName; |
| if (addr.length == INADDRSZ) { // normal IPv6 address |
| holder().family = AF_INET6; |
| ipaddress = addr.clone(); |
| } |
| if (nif != null) { |
| this.scope_ifname = nif; |
| scope_ifname_set = true; |
| scope_id = deriveNumericScope (nif); |
| scope_id_set = true; |
| } |
| } |
| |
| /* check the two Ipv6 addresses and return false if they are both |
| * non global address types, but not the same. |
| * (ie. one is sitelocal and the other linklocal) |
| * return true otherwise. |
| */ |
| private boolean differentLocalAddressTypes(Inet6Address other) { |
| |
| if (isLinkLocalAddress() && !other.isLinkLocalAddress()) { |
| return false; |
| } |
| if (isSiteLocalAddress() && !other.isSiteLocalAddress()) { |
| return false; |
| } |
| return true; |
| } |
| |
| private int deriveNumericScope (NetworkInterface ifc) throws UnknownHostException { |
| Enumeration<InetAddress> addresses = ifc.getInetAddresses(); |
| while (addresses.hasMoreElements()) { |
| InetAddress addr = addresses.nextElement(); |
| if (!(addr instanceof Inet6Address)) { |
| continue; |
| } |
| Inet6Address ia6_addr = (Inet6Address)addr; |
| /* check if site or link local prefixes match */ |
| if (!differentLocalAddressTypes(ia6_addr)){ |
| /* type not the same, so carry on searching */ |
| continue; |
| } |
| /* found a matching address - return its scope_id */ |
| return ia6_addr.scope_id; |
| } |
| throw new UnknownHostException ("no scope_id found"); |
| } |
| |
| private int deriveNumericScope (String ifname) throws UnknownHostException { |
| Enumeration<NetworkInterface> en; |
| try { |
| en = NetworkInterface.getNetworkInterfaces(); |
| } catch (SocketException e) { |
| throw new UnknownHostException ("could not enumerate local network interfaces"); |
| } |
| while (en.hasMoreElements()) { |
| NetworkInterface ifc = en.nextElement(); |
| if (ifc.getName().equals (ifname)) { |
| Enumeration addresses = ifc.getInetAddresses(); |
| while (addresses.hasMoreElements()) { |
| InetAddress addr = (InetAddress)addresses.nextElement(); |
| if (!(addr instanceof Inet6Address)) { |
| continue; |
| } |
| Inet6Address ia6_addr = (Inet6Address)addr; |
| /* check if site or link local prefixes match */ |
| if (!differentLocalAddressTypes(ia6_addr)){ |
| /* type not the same, so carry on searching */ |
| continue; |
| } |
| /* found a matching address - return its scope_id */ |
| return ia6_addr.scope_id; |
| } |
| } |
| } |
| throw new UnknownHostException ("No matching address found for interface : " +ifname); |
| } |
| |
| /** |
| * restore the state of this object from stream |
| * including the scope information, only if the |
| * scoped interface name is valid on this system |
| */ |
| private void readObject(ObjectInputStream s) |
| throws IOException, ClassNotFoundException { |
| scope_ifname = null; |
| scope_ifname_set = false; |
| |
| if (getClass().getClassLoader() != Class.class.getClassLoader()) { |
| throw new SecurityException ("invalid address type"); |
| } |
| |
| s.defaultReadObject(); |
| |
| if (ifname != null && !"".equals (ifname)) { |
| try { |
| scope_ifname = NetworkInterface.getByName(ifname); |
| if (scope_ifname == null) { |
| /* the interface does not exist on this system, so we clear |
| * the scope information completely */ |
| scope_id_set = false; |
| scope_ifname_set = false; |
| scope_id = 0; |
| } else { |
| try { |
| scope_id = deriveNumericScope (scope_ifname); |
| } catch (UnknownHostException e) { |
| // typically should not happen, but it may be that |
| // the machine being used for deserialization has |
| // the same interface name but without IPv6 configured. |
| } |
| } |
| } catch (SocketException e) {} |
| |
| } |
| /* if ifname was not supplied, then the numeric info is used */ |
| |
| ipaddress = ipaddress.clone(); |
| |
| // Check that our invariants are satisfied |
| if (ipaddress.length != INADDRSZ) { |
| throw new InvalidObjectException("invalid address length: "+ |
| ipaddress.length); |
| } |
| |
| if (holder().getFamily() != AF_INET6) { |
| throw new InvalidObjectException("invalid address family type"); |
| } |
| } |
| |
| /** |
| * Utility routine to check if the InetAddress is an IP multicast |
| * address. 11111111 at the start of the address identifies the |
| * address as being a multicast address. |
| * |
| * @return a <code>boolean</code> indicating if the InetAddress is |
| * an IP multicast address |
| * @since JDK1.1 |
| */ |
| @Override |
| public boolean isMulticastAddress() { |
| return ((ipaddress[0] & 0xff) == 0xff); |
| } |
| |
| /** |
| * Utility routine to check if the InetAddress in a wildcard address. |
| * @return a <code>boolean</code> indicating if the Inetaddress is |
| * a wildcard address. |
| * @since 1.4 |
| */ |
| @Override |
| public boolean isAnyLocalAddress() { |
| byte test = 0x00; |
| for (int i = 0; i < INADDRSZ; i++) { |
| test |= ipaddress[i]; |
| } |
| return (test == 0x00); |
| } |
| |
| /** |
| * Utility routine to check if the InetAddress is a loopback address. |
| * |
| * @return a <code>boolean</code> indicating if the InetAddress is |
| * a loopback address; or false otherwise. |
| * @since 1.4 |
| */ |
| @Override |
| public boolean isLoopbackAddress() { |
| byte test = 0x00; |
| for (int i = 0; i < 15; i++) { |
| test |= ipaddress[i]; |
| } |
| return (test == 0x00) && (ipaddress[15] == 0x01); |
| } |
| |
| /** |
| * Utility routine to check if the InetAddress is an link local address. |
| * |
| * @return a <code>boolean</code> indicating if the InetAddress is |
| * a link local address; or false if address is not a link local unicast address. |
| * @since 1.4 |
| */ |
| @Override |
| public boolean isLinkLocalAddress() { |
| return ((ipaddress[0] & 0xff) == 0xfe |
| && (ipaddress[1] & 0xc0) == 0x80); |
| } |
| |
| /** |
| * Utility routine to check if the InetAddress is a site local address. |
| * |
| * @return a <code>boolean</code> indicating if the InetAddress is |
| * a site local address; or false if address is not a site local unicast address. |
| * @since 1.4 |
| */ |
| @Override |
| public boolean isSiteLocalAddress() { |
| return ((ipaddress[0] & 0xff) == 0xfe |
| && (ipaddress[1] & 0xc0) == 0xc0); |
| } |
| |
| /** |
| * Utility routine to check if the multicast address has global scope. |
| * |
| * @return a <code>boolean</code> indicating if the address has |
| * is a multicast address of global scope, false if it is not |
| * of global scope or it is not a multicast address |
| * @since 1.4 |
| */ |
| @Override |
| public boolean isMCGlobal() { |
| return ((ipaddress[0] & 0xff) == 0xff |
| && (ipaddress[1] & 0x0f) == 0x0e); |
| } |
| |
| /** |
| * Utility routine to check if the multicast address has node scope. |
| * |
| * @return a <code>boolean</code> indicating if the address has |
| * is a multicast address of node-local scope, false if it is not |
| * of node-local scope or it is not a multicast address |
| * @since 1.4 |
| */ |
| @Override |
| public boolean isMCNodeLocal() { |
| return ((ipaddress[0] & 0xff) == 0xff |
| && (ipaddress[1] & 0x0f) == 0x01); |
| } |
| |
| /** |
| * Utility routine to check if the multicast address has link scope. |
| * |
| * @return a <code>boolean</code> indicating if the address has |
| * is a multicast address of link-local scope, false if it is not |
| * of link-local scope or it is not a multicast address |
| * @since 1.4 |
| */ |
| @Override |
| public boolean isMCLinkLocal() { |
| return ((ipaddress[0] & 0xff) == 0xff |
| && (ipaddress[1] & 0x0f) == 0x02); |
| } |
| |
| /** |
| * Utility routine to check if the multicast address has site scope. |
| * |
| * @return a <code>boolean</code> indicating if the address has |
| * is a multicast address of site-local scope, false if it is not |
| * of site-local scope or it is not a multicast address |
| * @since 1.4 |
| */ |
| @Override |
| public boolean isMCSiteLocal() { |
| return ((ipaddress[0] & 0xff) == 0xff |
| && (ipaddress[1] & 0x0f) == 0x05); |
| } |
| |
| /** |
| * Utility routine to check if the multicast address has organization scope. |
| * |
| * @return a <code>boolean</code> indicating if the address has |
| * is a multicast address of organization-local scope, |
| * false if it is not of organization-local scope |
| * or it is not a multicast address |
| * @since 1.4 |
| */ |
| @Override |
| public boolean isMCOrgLocal() { |
| return ((ipaddress[0] & 0xff) == 0xff |
| && (ipaddress[1] & 0x0f) == 0x08); |
| } |
| |
| /** |
| * Returns the raw IP address of this <code>InetAddress</code> |
| * object. The result is in network byte order: the highest order |
| * byte of the address is in <code>getAddress()[0]</code>. |
| * |
| * @return the raw IP address of this object. |
| */ |
| @Override |
| public byte[] getAddress() { |
| return ipaddress.clone(); |
| } |
| |
| /** |
| * Returns the numeric scopeId, if this instance is associated with |
| * an interface. If no scoped_id is set, the returned value is zero. |
| * |
| * @return the scopeId, or zero if not set. |
| * @since 1.5 |
| */ |
| public int getScopeId () { |
| return scope_id; |
| } |
| |
| /** |
| * Returns the scoped interface, if this instance was created with |
| * with a scoped interface. |
| * |
| * @return the scoped interface, or null if not set. |
| * @since 1.5 |
| */ |
| public NetworkInterface getScopedInterface () { |
| return scope_ifname; |
| } |
| |
| /** |
| * Returns the IP address string in textual presentation. If the instance was created |
| * specifying a scope identifier then the scope id is appended to the IP address preceded by |
| * a "%" (per-cent) character. This can be either a numeric value or a string, depending on which |
| * was used to createthe instance. |
| * |
| * @return the raw IP address in a string format. |
| */ |
| @Override |
| public String getHostAddress() { |
| |
| /* ----- BEGIN android ----- |
| getnameinfo returns smarter representations |
| String s = numericToTextFormat(ipaddress); |
| if (scope_ifname_set) { |
| s = s + "%" + scope_ifname.getName(); |
| } else if (scope_id_set) { |
| s = s + "%" + scope_id; |
| } |
| return s;*/ |
| |
| return Libcore.os.getnameinfo(this, NI_NUMERICHOST); // Can't throw. |
| // ----- END android ----- |
| } |
| |
| /** |
| * Returns a hashcode for this IP address. |
| * |
| * @return a hash code value for this IP address. |
| */ |
| @Override |
| public int hashCode() { |
| if (ipaddress != null) { |
| |
| int hash = 0; |
| int i=0; |
| while (i<INADDRSZ) { |
| int j=0; |
| int component=0; |
| while (j<4 && i<INADDRSZ) { |
| component = (component << 8) + ipaddress[i]; |
| j++; |
| i++; |
| } |
| hash += component; |
| } |
| return hash; |
| |
| } else { |
| return 0; |
| } |
| } |
| |
| /** |
| * Compares this object against the specified object. |
| * The result is <code>true</code> if and only if the argument is |
| * not <code>null</code> and it represents the same IP address as |
| * this object. |
| * <p> |
| * Two instances of <code>InetAddress</code> represent the same IP |
| * address if the length of the byte arrays returned by |
| * <code>getAddress</code> is the same for both, and each of the |
| * array components is the same for the byte arrays. |
| * |
| * @param obj the object to compare against. |
| * @return <code>true</code> if the objects are the same; |
| * <code>false</code> otherwise. |
| * @see java.net.InetAddress#getAddress() |
| */ |
| @Override |
| public boolean equals(Object obj) { |
| if (obj == null || |
| !(obj instanceof Inet6Address)) |
| return false; |
| |
| Inet6Address inetAddr = (Inet6Address)obj; |
| |
| for (int i = 0; i < INADDRSZ; i++) { |
| if (ipaddress[i] != inetAddr.ipaddress[i]) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| /** |
| * Utility routine to check if the InetAddress is an |
| * IPv4 compatible IPv6 address. |
| * |
| * @return a <code>boolean</code> indicating if the InetAddress is |
| * an IPv4 compatible IPv6 address; or false if address is IPv4 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 true; |
| } |
| return false; |
| } |
| |
| // Utilities |
| private final static int INT16SZ = 2; |
| /* |
| * Convert IPv6 binary address into presentation (printable) format. |
| * |
| * @param src a byte array representing the IPv6 numeric address |
| * @return a String representing an IPv6 address in |
| * textual representation format |
| * @since 1.4 |
| */ |
| static String numericToTextFormat(byte[] src) |
| { |
| StringBuffer sb = new StringBuffer(39); |
| for (int i = 0; i < (INADDRSZ / INT16SZ); i++) { |
| sb.append(Integer.toHexString(((src[i<<1]<<8) & 0xff00) |
| | (src[(i<<1)+1] & 0xff))); |
| |
| if (i < (INADDRSZ / INT16SZ) -1 ) { |
| sb.append(":"); |
| } |
| } |
| return sb.toString(); |
| } |
| |
| /** |
| * Perform class load-time initializations. |
| */ |
| private static native void init(); |
| |
| /** |
| * Following field is only used during (de)/serialization |
| */ |
| private String ifname; |
| |
| /** |
| * default behavior is overridden in order to write the |
| * scope_ifname field as a String, rather than a NetworkInterface |
| * which is not serializable |
| */ |
| private synchronized void writeObject(java.io.ObjectOutputStream s) |
| throws IOException |
| { |
| if (scope_ifname_set) { |
| ifname = scope_ifname.getName(); |
| } |
| s.defaultWriteObject(); |
| } |
| } |
