James Moger
2014-03-08 860d2ca577520850a705298a2b19a0de0459b82e
Establish ssh keys folder, support multiple keys, revise key authenticator
1 files deleted
3 files modified
123 ■■■■■ changed files
src/main/distrib/data/gitblit.properties 5 ●●●●● patch | view | raw | blame | history
src/main/java/com/gitblit/manager/AuthenticationManager.java 2 ●●● patch | view | raw | blame | history
src/main/java/com/gitblit/transport/ssh/SshKeyAuthenticator.java 90 ●●●● patch | view | raw | blame | history
src/main/java/com/gitblit/transport/ssh/SshKeyCacheEntry.java 26 ●●●●● patch | view | raw | blame | history
src/main/distrib/data/gitblit.properties
@@ -110,6 +110,11 @@
# RESTART REQUIRED
git.sshBindInterface = localhost
# Directory for storing user SSH keys.
#
# SINCE 1.5.0
git.sshKeysFolder= ${baseFolder}/ssh
# Allow push/pull over http/https with JGit servlet.
# If you do NOT want to allow Git clients to clone/push to Gitblit set this
# to false.  You might want to do this if you are only using ssh:// or git://.
src/main/java/com/gitblit/manager/AuthenticationManager.java
@@ -304,7 +304,7 @@
                UserModel user = userManager.getUserModel(username);
                if (user != null) {
                    // existing user
                    logger.debug(MessageFormat.format("{0} authenticated by servlet container principal from {1}",
                    logger.debug(MessageFormat.format("{0} authenticated by SSH key from {1}",
                            user.username, sshSession.getRemoteAddress()));
                    return validateAuthentication(user, AuthenticationType.SSH);
                }
src/main/java/com/gitblit/transport/ssh/SshKeyAuthenticator.java
@@ -18,8 +18,11 @@
import java.io.File;
import java.io.IOException;
import java.security.PublicKey;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import org.apache.commons.codec.binary.Base64;
import org.apache.sshd.common.util.Buffer;
@@ -27,12 +30,13 @@
import org.apache.sshd.server.session.ServerSession;
import org.eclipse.jgit.lib.Constants;
import com.gitblit.Keys;
import com.gitblit.manager.IGitblit;
import com.gitblit.models.UserModel;
import com.google.common.base.Charsets;
import com.google.common.cache.CacheBuilder;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.LoadingCache;
import com.google.common.cache.Weigher;
import com.google.common.io.Files;
/**
@@ -44,28 +48,38 @@
  protected final IGitblit gitblit;
  LoadingCache<String, SshKeyCacheEntry> sshKeyCache = CacheBuilder
      .newBuilder().maximumWeight(2 << 20).weigher(new SshKeyCacheWeigher())
      .build(new CacheLoader<String, SshKeyCacheEntry>() {
        public SshKeyCacheEntry load(String key) throws Exception {
          return loadKey(key);
    LoadingCache<String, List<PublicKey>> sshKeyCache = CacheBuilder
            .newBuilder().
            expireAfterAccess(15, TimeUnit.MINUTES).
            maximumSize(100)
            .build(new CacheLoader<String, List<PublicKey>>() {
                public List<PublicKey> load(String username) {
                    try {
                        File dir = gitblit.getFileOrFolder(Keys.git.sshKeysFolder, "${baseFolder}/ssh");
                        dir.mkdirs();
                        File keys = new File(dir, username + ".keys");
                        if (!keys.exists()) {
                            return null;
                        }
                        if (keys.exists()) {
                            String str = Files.toString(keys, Charsets.ISO_8859_1);
                            String [] entries = str.split("\n");
                            List<PublicKey> list = new ArrayList<PublicKey>();
                            for (String entry : entries) {
                                final String[] parts = entry.split(" ");
                                final byte[] bin = Base64.decodeBase64(Constants.encodeASCII(parts[1]));
                                list.add(new Buffer(bin).getRawPublicKey());
        }
        private SshKeyCacheEntry loadKey(String key) {
          try {
            // TODO(davido): retrieve absolute path to public key directory:
            //String dir = gitblit.getSettings().getString("public_key_dir", "data/ssh");
            String dir = "/tmp/";
            // Expect public key file name in form: <username.pub> in
            File file = new File(dir + key + ".pub");
            String str = Files.toString(file, Charsets.ISO_8859_1);
            final String[] parts = str.split(" ");
            final byte[] bin =
                Base64.decodeBase64(Constants.encodeASCII(parts[1]));
            return new SshKeyCacheEntry(key, new Buffer(bin).getRawPublicKey());
                            if (list.isEmpty()) {
                                return null;
                            }
                            return list;
                        }
          } catch (IOException e) {
            throw new RuntimeException("Canot read public key", e);
          }
                    return null;
        }
      });
@@ -78,19 +92,17 @@
      final ServerSession session) {
    final SshSession sd = session.getAttribute(SshSession.KEY);
    // if (config.getBoolean("auth", "userNameToLowerCase", false)) {
    username = username.toLowerCase(Locale.US);
    // }
    try {
      // TODO: allow multiple public keys per user
      SshKeyCacheEntry key = sshKeyCache.get(username);
      if (key == null) {
            List<PublicKey> keys = sshKeyCache.get(username);
            if (keys == null || keys.isEmpty()) {
        sd.authenticationError(username, "no-matching-key");
        return false;
      }
      if (key.match(suppliedKey)) {
        return success(username, session, sd);
            for (PublicKey key : keys) {
                if (key.equals(suppliedKey)) {
                    return validate(username, sd);
                }
      }
      return false;
    } catch (ExecutionException e) {
@@ -99,27 +111,15 @@
    }
  }
  boolean success(String username, ServerSession session, SshSession sd) {
    boolean validate(String username, SshSession sd) {
        // now that the key has been validated, check with the authentication
        // manager to ensure that this user exists and can authenticate
    sd.authenticationSuccess(username);
    /*
     * sshLog.onLogin();
     *
     * GerritServerSession s = (GerritServerSession) session;
     * s.addCloseSessionListener( new SshFutureListener<CloseFuture>() {
     *
     * @Override public void operationComplete(CloseFuture future) { final
     * Context ctx = sshScope.newContext(null, sd, null); final Context old =
     * sshScope.set(ctx); try { sshLog.onLogout(); } finally {
     * sshScope.set(old); } } }); }
     */
        UserModel user = gitblit.authenticate(sd);
        if (user != null) {
    return true;
  }
  private static class SshKeyCacheWeigher implements
      Weigher<String, SshKeyCacheEntry> {
    @Override
    public int weigh(String key, SshKeyCacheEntry value) {
      return key.length() + value.weigh();
    }
        sd.authenticationError(username, "user-not-found");
        return false;
  }
}
src/main/java/com/gitblit/transport/ssh/SshKeyCacheEntry.java
File was deleted