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/*
* Jitsi, the OpenSource Java VoIP and Instant Messaging client.
*
* Copyright @ 2015 Atlassian Pty Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.java.sip.communicator.plugin.otr;
import java.util.*;
import org.bouncycastle.util.encoders.Base64; // disambiguation
import org.jitsi.service.configuration.*;
/**
* A class that gets/sets the OTR configuration values. Introduced to assure our
* configuration is properly written when <tt>XMLConfigurationStore</tt> is
* used. Can be seen as a proxy between the {@link ConfigurationService} and the
* OTR Plugin.
*
* @author George Politis
*/
public class OtrConfigurator
{
/**
* Gets an XML tag friendly {@link String} from a {@link String}.
*
* @param s a {@link String}
* @return an XML friendly {@link String}
*/
private String getXmlFriendlyString(String s)
{
if (s == null || s.length() < 1)
return s;
// XML Tags are not allowed to start with digits,
// insert a dummy "p" char.
if (Character.isDigit(s.charAt(0)))
s = "p" + s;
char[] cId = new char[s.length()];
for (int i = 0; i < cId.length; i++)
{
char c = s.charAt(i);
cId[i] = Character.isLetterOrDigit(c) ? c : '_';
}
return new String(cId);
}
/**
* Puts a given property ID under the OTR namespace and makes sure it is XML
* tag friendly.
*
* @param id the property ID.
* @return the namespaced ID.
*/
private String getID(String id)
{
return
"net.java.sip.communicator.plugin.otr." + getXmlFriendlyString(id);
}
/**
* Returns the value of the property with the specified name or null if no
* such property exists ({@link ConfigurationService#getProperty(String)}
* proxy).
*
* @param id of the property that is being queried.
* @return the <tt>byte[]</tt> value of the property with the specified
* name.
*/
public byte[] getPropertyBytes(String id)
{
String value = OtrActivator.configService.getString(getID(id));
return (value == null) ? null : Base64.decode(value.getBytes());
}
/**
* Gets the value of a specific property as a boolean (
* {@link ConfigurationService#getBoolean(String, boolean)} proxy).
*
* @param id of the property that is being queried.
* @param defaultValue the value to be returned if the specified property
* name is not associated with a value.
* @return the <tt>Boolean</tt> value of the property with the specified
* name.
*/
public boolean getPropertyBoolean(String id, boolean defaultValue)
{
return
OtrActivator.configService.getBoolean(getID(id), defaultValue);
}
/**
* Sets the property with the specified name to the specified value (
* {@link ConfigurationService#setProperty(String, Object)} proxy). The
* value is Base64 encoded.
*
* @param id the name of the property to change.
* @param value the new value of the specified property.
*/
public void setProperty(String id, byte[] value)
{
String valueToStore = new String(Base64.encode(value));
OtrActivator.configService.setProperty(getID(id), valueToStore);
}
/**
* Sets the property with the specified name to the specified value (
* {@link ConfigurationService#setProperty(String, Object)} proxy).
*
* @param id the name of the property to change.
* @param value the new value of the specified property.
*/
public void setProperty(String id, Object value)
{
OtrActivator.configService.setProperty(getID(id), value);
}
/**
* Removes the property with the specified name (
* {@link ConfigurationService#removeProperty(String)} proxy).
*
* @param id the name of the property to change.
*/
public void removeProperty(String id)
{
OtrActivator.configService.removeProperty(getID(id));
}
/**
* Gets the value of a specific property as a signed decimal integer.
*
* @param id the name of the property to change.
* @param defaultValue the value to be returned if the specified property
* name is not associated with a value.
* @return the <tt>int</tt> value of the property
*/
public int getPropertyInt(String id, int defaultValue)
{
return OtrActivator.configService.getInt(getID(id), defaultValue);
}
/**
* Appends <tt>value</tt> to the old value of the property with the
* specified name. The two values will be comma separated.
*
* @param id the name of the property to append to
* @param value the value to append
*/
public void appendProperty(String id, Object value)
{
Object oldValue = OtrActivator.configService.getProperty(getID(id));
String newValue =
oldValue == null ? value.toString() : oldValue + "," + value;
setProperty(id, newValue);
}
public List<String> getAppendedProperties(String id)
{
String listProperties =
(String) OtrActivator.configService.getProperty(getID(id));
if (listProperties == null) return new ArrayList<String>();
return Arrays.asList(listProperties.split(","));
}
}
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