001/*
002 * Copyright (C) 2012 eXo Platform SAS.
003 *
004 * This is free software; you can redistribute it and/or modify it
005 * under the terms of the GNU Lesser General Public License as
006 * published by the Free Software Foundation; either version 2.1 of
007 * the License, or (at your option) any later version.
008 *
009 * This software is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * You should have received a copy of the GNU Lesser General Public
015 * License along with this software; if not, write to the Free
016 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018 */
019package org.crsh.ssh.term;
020
021import org.apache.sshd.common.PtyMode;
022import org.apache.sshd.server.Environment;
023
024import java.util.logging.Level;
025import java.util.logging.Logger;
026
027public class SSHContext {
028
029  /** . */
030  private static final Logger log = Logger.getLogger(SSHContext.class.getName());
031
032  /** . */
033  public final int verase;
034
035  /** . */
036  private final Environment env;
037
038  public SSHContext(Environment env) {
039    if (env == null) {
040      throw new NullPointerException("No null env");
041    }
042
043    //
044    Integer verase = env.getPtyModes().get(PtyMode.VERASE);
045
046    //
047    this.env = env;
048    this.verase = verase != null ? verase : -1;
049  }
050
051  public int getWidth() {
052    String s = env.getEnv().get(Environment.ENV_COLUMNS);
053    int width = -1;
054    if (s != null) {
055      try {
056        width = Integer.parseInt(s);
057      }
058      catch (NumberFormatException e) {
059        log.log(Level.WARNING, "Could not parse ssh term width " + s);
060      }
061    }
062    return width;
063  }
064
065  public int getHeight() {
066    String s = env.getEnv().get(Environment.ENV_LINES);
067    int height = -1;
068    if (s != null) {
069      try {
070        height = Integer.parseInt(s);
071      }
072      catch (NumberFormatException e) {
073        log.log(Level.WARNING, "Could not parse ssh term height " + s);
074      }
075    }
076    return height;
077  }
078
079  public String getProperty(String key)
080  {
081    return env.getEnv().get(key);
082  }
083}