109 lines
3.9 KiB
Java
109 lines
3.9 KiB
Java
/**
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*
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* Copyright 2003-2014 Jive Software.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smack.filter;
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import java.util.Locale;
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import org.jivesoftware.smack.packet.Packet;
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import org.jivesoftware.smack.util.StringUtils;
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/**
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* Filter for packets where the "from" field exactly matches a specified JID. If the specified
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* address is a bare JID then the filter will match any address whose bare JID matches the
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* specified JID. But if the specified address is a full JID then the filter will only match
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* if the sender of the packet matches the specified resource.
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*
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* @author Gaston Dombiak
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*/
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public class FromMatchesFilter implements PacketFilter {
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private String address;
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/**
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* Flag that indicates if the checking will be done against bare JID addresses or full JIDs.
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*/
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private boolean matchBareJID = false;
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/**
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* Creates a filter matching on the "from" field. The from address must be the same as the
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* filter address. The second parameter specifies whether the full or the bare addresses are
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* compared.
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*
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* @param address The address to filter for. If <code>null</code> is given, the packet must not
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* have a from address.
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* @param matchBare
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*/
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public FromMatchesFilter(String address, boolean matchBare) {
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this.address = (address == null) ? null : address.toLowerCase(Locale.US);
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matchBareJID = matchBare;
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}
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/**
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* Creates a filter matching on the "from" field. If the filter address is bare, compares
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* the filter address with the bare from address. Otherwise, compares the filter address
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* with the full from address.
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*
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* @param address The address to filter for. If <code>null</code> is given, the packet must not
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* have a from address.
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*/
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public static FromMatchesFilter create(String address) {
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return new FromMatchesFilter(address, "".equals(StringUtils.parseResource(address))) ;
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}
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/**
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* Creates a filter matching on the "from" field. Compares the bare version of from and filter
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* address.
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*
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* @param address The address to filter for. If <code>null</code> is given, the packet must not
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* have a from address.
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*/
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public static FromMatchesFilter createBare(String address) {
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address = (address == null) ? null : StringUtils.parseBareAddress(address);
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return new FromMatchesFilter(address, true);
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}
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/**
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* Creates a filter matching on the "from" field. Compares the full version of from and filter
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* address.
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*
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* @param address The address to filter for. If <code>null</code> is given, the packet must not
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* have a from address.
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*/
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public static FromMatchesFilter createFull(String address) {
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return new FromMatchesFilter(address, false);
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}
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public boolean accept(Packet packet) {
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String from = packet.getFrom();
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if (from == null) {
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return address == null;
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}
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// Simplest form of NAMEPREP/STRINGPREP
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from = from.toLowerCase(Locale.US);
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if (matchBareJID) {
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from = StringUtils.parseBareAddress(from);
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}
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return from.equals(address);
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}
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public String toString() {
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String matchMode = matchBareJID ? "bare" : "full";
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return "FromMatchesFilter (" +matchMode + "): " + address;
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}
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}
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