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/*
* ConnectBot: simple, powerful, open-source SSH client for Android
* Copyright 2007 Kenny Root, Jeffrey Sharkey
*
* 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 org.connectbot.transport;
import java.util.HashMap;
import java.util.Map;
import org.connectbot.bean.HostBean;
import org.connectbot.data.HostStorage;
import android.content.Context;
import android.net.Uri;
import android.util.Log;
/**
* @author Kenny Root
*
*/
public class TransportFactory {
private static final String TAG = "CB.TransportFactory";
private static String[] transportNames = {
SSH.getProtocolName(),
Telnet.getProtocolName(),
Local.getProtocolName(),
};
/**
* @param protocol
* @return
*/
public static AbsTransport getTransport(String protocol) {
if (SSH.getProtocolName().equals(protocol)) {
return new SSH();
} else if (Telnet.getProtocolName().equals(protocol)) {
return new Telnet();
} else if (Local.getProtocolName().equals(protocol)) {
return new Local();
} else {
return null;
}
}
public static Uri getUri(String scheme, String input) {
Log.d("TransportFactory", String.format(
"Attempting to discover URI for scheme=%s on input=%s", scheme,
input));
if (SSH.getProtocolName().equals(scheme))
return SSH.getUri(input);
else if (Telnet.getProtocolName().equals(scheme))
return Telnet.getUri(input);
else if (Local.getProtocolName().equals(scheme)) {
Log.d("TransportFactory", "Got to the local parsing area");
return Local.getUri(input);
} else
return null;
}
public static String[] getTransportNames() {
return transportNames;
}
public static boolean isSameTransportType(AbsTransport a, AbsTransport b) {
if (a == null || b == null)
return false;
return a.getClass().equals(b.getClass());
}
public static boolean canForwardPorts(String protocol) {
// TODO uh, make this have less knowledge about its children
if (SSH.getProtocolName().equals(protocol)) {
return true;
} else {
return false;
}
}
/**
* @param protocol text name of protocol
* @param context
* @return expanded format hint
*/
public static String getFormatHint(String protocol, Context context) {
if (SSH.getProtocolName().equals(protocol)) {
return SSH.getFormatHint(context);
} else if (Telnet.getProtocolName().equals(protocol)) {
return Telnet.getFormatHint(context);
} else if (Local.getProtocolName().equals(protocol)) {
return Local.getFormatHint(context);
} else {
return AbsTransport.getFormatHint(context);
}
}
/**
* @param hostdb Handle to HostDatabase
* @param uri URI to target server
* @return true when host was found
*/
public static HostBean findHost(HostStorage hostdb, Uri uri) {
AbsTransport transport = getTransport(uri.getScheme());
Map<String, String> selection = new HashMap<String, String>();
transport.getSelectionArgs(uri, selection);
if (selection.size() == 0) {
Log.e(TAG, String.format("Transport %s failed to do something useful with URI=%s",
uri.getScheme(), uri.toString()));
throw new IllegalStateException("Failed to get needed selection arguments");
}
return hostdb.findHost(selection);
}
}
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