From f8fffe5e29f55856b93b5e21f1a672bb1a0fec40 Mon Sep 17 00:00:00 2001
From: hsm <hsm@lamia.panaceas.james.local>
Date: Sun, 29 May 2016 04:17:53 +0100
Subject: Add support for auth with open-keychain

---
 .../trilead/ssh2/signature/TokenRSASHA1Verify.java | 175 +++++++++++++++++++++
 1 file changed, 175 insertions(+)
 create mode 100644 sshlib/src/main/java/com/trilead/ssh2/signature/TokenRSASHA1Verify.java

(limited to 'sshlib/src/main/java/com/trilead/ssh2/signature/TokenRSASHA1Verify.java')

diff --git a/sshlib/src/main/java/com/trilead/ssh2/signature/TokenRSASHA1Verify.java b/sshlib/src/main/java/com/trilead/ssh2/signature/TokenRSASHA1Verify.java
new file mode 100644
index 0000000..d8b95fa
--- /dev/null
+++ b/sshlib/src/main/java/com/trilead/ssh2/signature/TokenRSASHA1Verify.java
@@ -0,0 +1,175 @@
+
+package com.trilead.ssh2.signature;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.math.BigInteger;
+import java.security.InvalidKeyException;
+import java.security.KeyFactory;
+import java.security.NoSuchAlgorithmException;
+import java.security.Signature;
+import java.security.SignatureException;
+import java.security.interfaces.RSAPrivateKey;
+import java.security.interfaces.RSAPublicKey;
+import java.security.spec.InvalidKeySpecException;
+import java.security.spec.KeySpec;
+import java.security.spec.RSAPublicKeySpec;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.UnsupportedEncodingException;
+
+
+import com.trilead.ssh2.log.Logger;
+import com.trilead.ssh2.packets.TypesReader;
+import com.trilead.ssh2.packets.TypesWriter;
+
+import android.app.Activity;
+import android.content.IntentSender;
+import android.content.Intent;
+import android.app.PendingIntent;
+
+
+
+import org.openintents.openpgp.IOpenPgpService2;
+import org.openintents.openpgp.OpenPgpDecryptionResult;
+import org.openintents.openpgp.OpenPgpError;
+import org.openintents.openpgp.OpenPgpSignatureResult;
+import org.openintents.openpgp.util.OpenPgpApi;
+import org.openintents.openpgp.util.OpenPgpServiceConnection;
+import org.openintents.openpgp.util.OpenPgpUtils;
+
+
+/**
+ * TokenRSASHA1Verify.
+ *
+ * @author James McKenzie
+ */
+public class TokenRSASHA1Verify
+{
+  private static final Object lock = new Object();
+
+  private static final Logger log = Logger.getLogger (TokenRSASHA1Verify.class);
+  private static final int pending_intent_code = 28674;
+
+  static private Activity activity;
+  static private OpenPgpServiceConnection mServiceConnection;
+
+  static private boolean async_semaphore = false;
+  static private boolean async_abort = false;
+  static private Intent  async_intent;
+
+  public static void open (Activity _activity)
+  {
+    activity = _activity;
+
+    if (activity == null)
+      return;
+
+    mServiceConnection = new OpenPgpServiceConnection (activity, "org.sufficientlysecure.keychain");
+    mServiceConnection.bindToService();
+  }
+
+
+  public static void callback (int requestCode, int resultCode, Intent intent)
+  {
+    if (requestCode !=  pending_intent_code) return;
+
+    synchronized (lock) {
+      if (resultCode == Activity.RESULT_OK) {
+        async_intent = intent;
+        async_abort = false;
+      } else
+        async_abort = true;
+
+      async_semaphore = true;
+
+      lock.notify();
+    }
+  }
+
+  public static byte[] generateSignature (byte[] message, TokenRSAPrivateKey pk) throws IOException
+  {
+    byte [] fail = new byte[0];
+    long key_id = pk.getKeyId();
+
+    if ((activity == null) || (mServiceConnection == null)) return fail;
+
+    Intent data = new Intent();
+    data.setAction (OpenPgpApi.ACTION_SSH_AUTH);
+    data.putExtra (OpenPgpApi.EXTRA_SIGN_KEY_ID, key_id);
+
+    InputStream is = new ByteArrayInputStream (message);
+
+    OpenPgpApi api = new OpenPgpApi (activity, mServiceConnection.getService());
+    Intent result = api.executeApi (data, is, null);
+
+
+    int result_code;
+
+    do {
+      result_code = result.getIntExtra (OpenPgpApi.RESULT_CODE, OpenPgpApi.RESULT_CODE_ERROR);
+
+      if (result_code == OpenPgpApi.RESULT_CODE_USER_INTERACTION_REQUIRED) {
+
+        synchronized (lock) {
+          async_semaphore = false;
+          async_abort = true;
+
+          PendingIntent pi = result.getParcelableExtra (OpenPgpApi.RESULT_INTENT);
+
+          try {
+            activity.startIntentSenderForResult (pi.getIntentSender(), pending_intent_code, null, 0, 0, 0);
+          } catch (IntentSender.SendIntentException e) {
+            return fail;
+          }
+
+          try {
+            while (async_semaphore == false)
+              lock.wait();
+          } catch (InterruptedException e) { }
+
+          if (async_abort)
+            return fail;
+
+          data = async_intent;
+        }
+
+        is = new ByteArrayInputStream (message);
+        result = api.executeApi (data, is, null);
+
+      } else
+        break;
+
+    } while (true);
+
+    switch (result_code) {
+    case OpenPgpApi.RESULT_CODE_SUCCESS: {
+
+      byte [] output = result.getByteArrayExtra (OpenPgpApi.RESULT_DETACHED_SIGNATURE);
+
+      if (output == null)
+        return fail;
+
+      return output;
+    }
+
+    case OpenPgpApi.RESULT_CODE_ERROR: {
+      //OpenPgpError error = result.getParcelableExtra (OpenPgpApi.RESULT_ERROR);
+      return fail;
+    }
+    }
+
+    return fail;
+
+  }
+
+  public static void close()
+  {
+    if (mServiceConnection != null)
+      mServiceConnection.unbindFromService();
+
+    activity = null;
+  }
+
+}
-- 
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