| /******************************************************************************* |
| * Copyright (c) 2007, 2008 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Atsuhiko Yamanaka, JCraft,Inc. - adding methods referring to IJSchLocation |
| *******************************************************************************/ |
| package org.eclipse.jsch.internal.core; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IConfigurationElement; |
| import org.eclipse.core.runtime.IExtension; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.jsch.core.IJSchService; |
| import org.eclipse.jsch.core.IJSchLocation; |
| import org.eclipse.osgi.util.NLS; |
| |
| import com.jcraft.jsch.*; |
| |
| /** |
| * A static class whose purpose is to ensure that all the JSch preferences are properly pushed into JSch |
| * before a {@link Session} is created. |
| * @since 1.0 |
| */ |
| class JSchProvider implements IJSchService { |
| |
| private static JSchProvider instance; |
| |
| @Override |
| public Session createSession(String host, int port, String username) throws JSchException { |
| |
| if(JSchCorePlugin.getPlugin().isNeedToLoadKnownHosts()){ |
| JSchCorePlugin.getPlugin().loadKnownHosts(); |
| } |
| |
| if(JSchCorePlugin.getPlugin().isNeedToLoadKeys()){ |
| JSchCorePlugin.getPlugin().loadPrivateKeys(); |
| } |
| |
| return Utils.createSession(JSchCorePlugin.getPlugin().getJSch(), username, host, port); |
| } |
| |
| @Override |
| public Session createSession(IJSchLocation location, UserInfo uinfo) throws JSchException { |
| |
| Session session=createSession(location.getHost(), location.getPort(), location.getUsername()); |
| |
| if(uinfo==null){ |
| IUserAuthenticator authenticator=getPluggedInAuthenticator(); |
| if(authenticator==null) |
| authenticator=new NullUserAuthenticator(); |
| uinfo=new UserInfoImpl(location, authenticator, (JSchCorePlugin.getPlugin().getTimeout() * 1000)); |
| } |
| if(uinfo!=null) |
| session.setUserInfo(uinfo); |
| |
| return session; |
| } |
| |
| public Session createSession(IJSchLocation location) throws JSchException { |
| return createSession(location, null); |
| } |
| |
| @Override |
| public void connect(Session session, int timeout, |
| IProgressMonitor monitor) throws JSchException{ |
| session.setSocketFactory(new ResponsiveSocketFactory(monitor, timeout)); |
| |
| UserInfo ui=session.getUserInfo(); |
| |
| if(ui!=null && (ui instanceof UserInfoImpl)) |
| ((UserInfoImpl)ui).aboutToConnect(); |
| |
| try{ |
| session.connect(); |
| } |
| catch(java.lang.ArrayIndexOutOfBoundsException e){ |
| // TODO This catch clause has been added to work around |
| // Bug 217980 and will be deleted in the future. |
| throw new JSchException("invalid server's version string");//$NON-NLS-1$ |
| } |
| catch(JSchException e){ |
| |
| // Try again since the previous prompt may have obtained |
| // the proper credential from the user. |
| // This logic had been implemented in org.eclipse.team.internal.ccvs.ssh2.JSchSession#getSession. |
| if(isAuthenticationFailure(e) |
| &&ui!=null&&(ui instanceof UserInfoImpl) |
| &&hasPromptExceededTimeout(session) |
| &&((UserInfoImpl)ui).incReuse()==0){ |
| String host=session.getHost(); |
| String user=session.getUserName(); |
| int port=session.getPort(); |
| session=Utils.createSession(getJSch(), user, host, port); |
| session.setUserInfo(ui); |
| session.setTimeout(timeout); |
| connect(session, timeout, monitor); |
| return; |
| } |
| |
| if(session.isConnected()) |
| session.disconnect(); |
| throw e; |
| } |
| |
| if(ui!=null && (ui instanceof UserInfoImpl)) |
| ((UserInfoImpl)ui).connectionMade(); |
| } |
| |
| @Override |
| public Proxy getProxyForHost(String host, String proxyType) { |
| return Utils.getProxyForHost(host, proxyType); |
| } |
| |
| public static IJSchService getInstance(){ |
| if (instance == null) |
| instance = new JSchProvider(); |
| return instance; |
| } |
| |
| @Override |
| public void connect(Proxy proxy, String host, int port, int timeout, |
| IProgressMonitor monitor) throws JSchException { |
| try{ |
| proxy.connect(new ResponsiveSocketFactory(monitor, timeout), host, port, timeout); |
| } |
| catch(JSchException e){ |
| throw e; |
| } |
| catch(Exception e){ |
| new JSchException(e.getMessage()); |
| } |
| } |
| |
| /** |
| * Search for an instance of IUserAuthenticator provided from other plug-in. |
| * @see org.eclipse.jsch.internal.ui.authenticator.WorkbenchUserAuthenticator |
| * @return an instance of IUserAuthenticator. |
| */ |
| private IUserAuthenticator getPluggedInAuthenticator(){ |
| IExtension[] extensions=Platform.getExtensionRegistry().getExtensionPoint( |
| JSchCorePlugin.ID, JSchCorePlugin.PT_AUTHENTICATOR).getExtensions(); |
| if(extensions.length==0) |
| return null; |
| IExtension extension=extensions[0]; |
| IConfigurationElement[] configs=extension.getConfigurationElements(); |
| if(configs.length==0){ |
| JSchCorePlugin |
| .log( |
| IStatus.ERROR, |
| NLS |
| .bind( |
| "User autheticator {0} is missing required fields", (new Object[] {extension.getUniqueIdentifier()})), null);//$NON-NLS-1$ |
| return null; |
| } |
| try{ |
| IConfigurationElement config=configs[0]; |
| return (IUserAuthenticator)config.createExecutableExtension("run");//$NON-NLS-1$ |
| } |
| catch(CoreException ex){ |
| JSchCorePlugin |
| .log( |
| IStatus.ERROR, |
| NLS |
| .bind( |
| "Unable to instantiate user authenticator {0}", (new Object[] {extension.getUniqueIdentifier()})), ex);//$NON-NLS-1$ |
| return null; |
| } |
| } |
| |
| @Override |
| public JSch getJSch(){ |
| return JSchCorePlugin.getPlugin().getJSch(); |
| } |
| |
| private boolean isAuthenticationFailure(JSchException ee){ |
| return ee.getMessage().equals("Auth fail"); //$NON-NLS-1$ |
| } |
| |
| private boolean hasPromptExceededTimeout(Session session){ |
| if(session.getUserInfo()==null || !(session.getUserInfo() instanceof UserInfoImpl)) |
| return false; |
| return ((UserInfoImpl)session.getUserInfo()).hasPromptExceededTimeout(); |
| } |
| |
| @Override |
| public IJSchLocation getLocation(String user, String host, int port){ |
| IJSchLocation location=null; |
| location=new JSchLocation(user, host, port); |
| return location; |
| } |
| } |