51 lines
1.7 KiB
Java
51 lines
1.7 KiB
Java
package com.ryanmichela.sshd;
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import org.apache.commons.lang3.ArrayUtils;
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import org.apache.sshd.server.PublickeyAuthenticator;
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import org.apache.sshd.server.session.ServerSession;
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import java.io.File;
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import java.io.FileReader;
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import java.security.PublicKey;
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/**
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* Copyright 2013 Ryan Michela
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*/
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public class PublicKeyAuthenticator implements PublickeyAuthenticator {
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private File authorizedKeysDir;
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public PublicKeyAuthenticator(File authorizedKeysDir) {
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this.authorizedKeysDir = authorizedKeysDir;
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}
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@Override
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public boolean authenticate(String username, PublicKey key, ServerSession session) {
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byte[] keyBytes = key.getEncoded();
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File keyFile = new File(authorizedKeysDir, username);
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if (keyFile.exists()) {
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try {
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FileReader fr = new FileReader(keyFile);
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PemDecoder pd = new PemDecoder(fr);
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PublicKey k = pd.getPemBytes();
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pd.close();
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if (k != null) {
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if (ArrayUtils.isEquals(key.getEncoded(), k.getEncoded())) {
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return true;
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}
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} else {
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SshdPlugin.instance.getLogger().severe("Failed to parse PEM file. " + keyFile.getAbsolutePath());
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}
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} catch (Exception e) {
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SshdPlugin.instance.getLogger().severe("Failed to process public key " + keyFile.getAbsolutePath() + ". " + e.getMessage());
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}
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} else {
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SshdPlugin.instance.getLogger().warning("Could not locate public key for " + username + ". Make sure the user's key is named the same as their user name without a file extension.");
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}
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return false;
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}
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}
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