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- /*
- * Copyright (c) 2006-2009 Chris Smith, Shane Mc Cormack, Gregory Holmes
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
- package com.dmdirc.parser.irc.callbacks;
-
- import java.util.Hashtable;
-
- import com.dmdirc.parser.irc.ChannelInfo;
- import com.dmdirc.parser.irc.ClientInfo;
- import com.dmdirc.parser.irc.IRCParser;
- import com.dmdirc.parser.irc.ParserError;
- import com.dmdirc.parser.irc.callbacks.interfaces.ICallbackInterface;
- import java.util.ArrayList;
-
- /**
- * CallbackObjectSpecific.
- * Superclass for all callback types that have a "specific" target.
- *
- * @author Shane Mc Cormack
- */
- public class CallbackObjectSpecific extends CallbackObject {
-
- /** Hashtable for storing specific information for callback. */
- protected volatile Hashtable<ICallbackInterface, String> specificData = new Hashtable<ICallbackInterface, String>();
-
- /**
- * Create a new instance of the Callback Object.
- *
- * @param parser IRCParser That owns this callback
- * @param manager CallbackManager that is in charge of this callback
- * @param type The type of callback to use
- * @since 0.6.3
- */
- public CallbackObjectSpecific(final IRCParser parser,
- final CallbackManager manager, final Class<? extends ICallbackInterface> type) {
- super(parser, manager, type);
- }
-
- /**
- * Used to check if a channel matches the specificData.
- *
- * @param eMethod Object that is being called back to
- * @param cChannel ChannelInfo object for the channel to test
- * @return true if channel given matches the specifics for the method given
- */
- protected boolean isValidChan(final ICallbackInterface eMethod, final ChannelInfo cChannel) {
- if (specificData.containsKey(eMethod)) {
- if (!myParser.getIRCStringConverter().equalsIgnoreCase(cChannel.getName(), specificData.get(eMethod))) { return false; }
- }
- return true;
- }
-
- /**
- * Used to check if a hostname matches the specificData.
- *
- * @param eMethod Object that is being called back to
- * @param sHost Hostname of user that sent the query
- * @return true if host given matches the specifics for the method given
- */
- protected boolean isValidUser(final ICallbackInterface eMethod, final String sHost) {
- final String nickname = ClientInfo.parseHost(sHost);
- if (specificData.containsKey(eMethod)) {
- if (!myParser.getIRCStringConverter().equalsIgnoreCase(nickname, specificData.get(eMethod))) { return false; }
- }
- return true;
- }
-
- // We override the default add method to make sure that any add with no
- // specifics will have the specific data removed.
- /**
- * Add a new callback.
- *
- * @param eMethod Object to callback to.
- */
- @Override
- public void add(final ICallbackInterface eMethod) {
- addCallback(eMethod);
- if (specificData.containsKey(eMethod)) { specificData.remove(eMethod); }
- }
-
- /**
- * Add a new callback with a specific target.
- *
- * @param eMethod Object to callback to.
- * @param specificTarget Target that must match for callback to be called.
- */
- public void add(final ICallbackInterface eMethod, final String specificTarget) {
- add(eMethod);
- if (!specificTarget.isEmpty()) {
- specificData.put(eMethod, specificTarget);
- }
- }
-
- /**
- * Remove a callback.
- *
- * @param eMethod Object to remove callback to.
- */
- @Override
- public void del(final ICallbackInterface eMethod) {
- delCallback(eMethod);
- if (specificData.containsKey(eMethod)) { specificData.remove(eMethod); }
- }
-
- /**
- * Actually calls this callback. The specified arguments must match those
- * specified in the callback's interface, or an error will be raised.
- *
- * @param args The arguments to pass to the callback implementation
- * @return True if a method was called, false otherwise
- */
- @Override
- public boolean call(final Object ... args) {
- boolean bResult = false;
-
- final Object[] newArgs = new Object[args.length + 1];
- System.arraycopy(args, 0, newArgs, 1, args.length);
- newArgs[0] = myParser;
-
- if (myParser.getCreateFake()) {
- createFakeArgs(newArgs);
- }
-
- for (ICallbackInterface iface :new ArrayList<ICallbackInterface>(callbackInfo)) {
- if (type.isAnnotationPresent(SpecificCallback.class) &&
- ((args[0] instanceof ClientInfo
- && !isValidUser(iface, ((ClientInfo) args[0]).getHost()))
- || (args[0] instanceof ChannelInfo
- && !isValidChan(iface, (ChannelInfo) args[0]))
- || (!(args[0] instanceof ClientInfo || args[0] instanceof ChannelInfo) &&
- args[args.length - 1] instanceof String
- && !isValidUser(iface, (String) args[args.length - 1])))) {
- continue;
- }
-
- try {
- type.getMethods()[0].invoke(iface, newArgs);
- } catch (Exception e) {
- final ParserError ei = new ParserError(ParserError.ERROR_ERROR,
- "Exception in callback ("+e.getMessage()+")", myParser.getLastLine());
- ei.setException(e);
- callErrorInfo(ei);
- }
- bResult = true;
- }
- return bResult;
- }
-
- }
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