org.jclouds.scriptbuilder.statements.ssh.AuthorizeRSAPublicKeys Maven / Gradle / Ivy

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/**
 * Licensed to jclouds, Inc. (jclouds) under one or more
 * contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  jclouds licenses this file
 * to you 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.jclouds.scriptbuilder.statements.ssh;

import static com.google.common.base.Preconditions.checkNotNull;
import static org.jclouds.scriptbuilder.domain.Statements.appendFile;
import static org.jclouds.scriptbuilder.domain.Statements.exec;

import java.util.Collections;
import java.util.List;

import org.jclouds.scriptbuilder.domain.OsFamily;
import org.jclouds.scriptbuilder.domain.Statement;
import org.jclouds.scriptbuilder.domain.StatementList;

import com.google.common.base.Joiner;
import com.google.common.base.Splitter;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableList.Builder;

/**
 * 
 * @author Adrian Cole
 */
public class AuthorizeRSAPublicKeys implements Statement {
   private final String sshDir;
   private final List publicKeys;

   public AuthorizeRSAPublicKeys(Iterable publicKeys) {
      this("~/.ssh", publicKeys);
   }

   public AuthorizeRSAPublicKeys(String sshDir, Iterable publicKeys) {
      this.sshDir = checkNotNull(sshDir, "sshDir");
      this.publicKeys = ImmutableList.copyOf(checkNotNull(publicKeys, "publicKeys"));
   }

   @Override
   public Iterable functionDependencies(OsFamily family) {
      return Collections.emptyList();
   }

   @Override
   public String render(OsFamily family) {
      checkNotNull(family, "family");
      if (family == OsFamily.WINDOWS)
         throw new UnsupportedOperationException("windows not yet implemented");
      Builder statements = ImmutableList.builder();
      statements.add(exec("mkdir -p " + sshDir));
      String authorizedKeys = sshDir + "{fs}authorized_keys";
      statements.add(appendFile(authorizedKeys, Splitter.on('\n').split(Joiner.on("\n\n").join(publicKeys))));
      statements.add(exec("chmod 600 " + authorizedKeys));
      return new StatementList(statements.build()).render(family);
   }
}