io.macgyver.ssh.PubKeyCredentials.java Source code

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Here is the source code for io.macgyver.ssh.PubKeyCredentials.java

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/**
 * 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 io.macgyver.ssh;

import java.io.File;

import com.google.common.base.Optional;

public class PubKeyCredentials implements Credentials {

    String username;
    Optional<File> privateKey = Optional.absent();

    public PubKeyCredentials(String username) {
        this.username = username;
        this.privateKey = locateKeyFile(username);
    }

    public PubKeyCredentials(String username, File pkf) {
        this.username = username;
        this.privateKey = Optional.fromNullable(pkf);
    }

    @Override
    public String getUsername() {
        return username;
    }

    public Optional<File> getPrivateKeyFile() {
        return privateKey;
    }

    private Optional<File> locateKeyFile(String username) {
        String home = System.getProperty("user.home", ".");
        File f = new File(home, ".ssh/id_rsa");
        if (f.exists()) {
            return Optional.of(f);
        }

        f = new File(home, ".ssh/id_dsa");
        if (f.exists()) {
            return Optional.of(f);
        }

        return Optional.absent();
    }
}