diff options
Diffstat (limited to 'OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyActivity.java')
| -rw-r--r-- | OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyActivity.java | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyActivity.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyActivity.java index e01f3397b..f8491849e 100644 --- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyActivity.java +++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyActivity.java @@ -18,9 +18,16 @@ package org.sufficientlysecure.keychain.ui; +import android.annotation.TargetApi; import android.app.Activity; import android.content.Intent; import android.net.Uri; +import android.nfc.NdefMessage; +import android.nfc.NdefRecord; +import android.nfc.NfcAdapter; +import android.nfc.NfcEvent; +import android.os.AsyncTask; +import android.os.Build; import android.os.Bundle; import android.os.Handler; import android.os.Message; @@ -32,6 +39,8 @@ import android.view.MenuItem; import android.view.Window; import android.widget.Toast; +import com.devspark.appmsg.AppMsg; + import org.sufficientlysecure.keychain.Constants; import org.sufficientlysecure.keychain.Id; import org.sufficientlysecure.keychain.R; @@ -45,6 +54,7 @@ import org.sufficientlysecure.keychain.ui.dialog.ShareNfcDialogFragment; import org.sufficientlysecure.keychain.ui.dialog.ShareQrCodeDialogFragment; import org.sufficientlysecure.keychain.util.Log; +import java.io.IOException; import java.util.ArrayList; import java.util.HashMap; @@ -61,6 +71,13 @@ public class ViewKeyActivity extends ActionBarActivity { private static final int RESULT_CODE_LOOKUP_KEY = 0x00007006; + // NFC + private NfcAdapter mNfcAdapter; + private NfcAdapter.CreateNdefMessageCallback mNdefCallback; + private NfcAdapter.OnNdefPushCompleteCallback mNdefCompleteCallback; + private byte[] mNfcKeyringBytes; + private static final int NFC_SENT = 1; + @Override protected void onCreate(Bundle savedInstanceState) { requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS); @@ -89,6 +106,8 @@ public class ViewKeyActivity extends ActionBarActivity { mDataUri = getIntent().getData(); + initNfc(mDataUri); + Bundle mainBundle = new Bundle(); mainBundle.putParcelable(ViewKeyMainFragment.ARG_DATA_URI, mDataUri); mTabsAdapter.addTab(actionBar.newTab().setText(getString(R.string.key_view_tab_main)), @@ -289,4 +308,94 @@ public class ViewKeyActivity extends ActionBarActivity { } } } + + /** + * NFC: Initialize NFC sharing if OS and device supports it + */ + @TargetApi(Build.VERSION_CODES.JELLY_BEAN) + private void initNfc(final Uri dataUri) { + // check if NFC Beam is supported (>= Android 4.1) + if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) { + + // Implementation for the CreateNdefMessageCallback interface + mNdefCallback = new NfcAdapter.CreateNdefMessageCallback() { + @Override + public NdefMessage createNdefMessage(NfcEvent event) { + /* + * When a device receives a push with an AAR in it, the application specified in the AAR is + * guaranteed to run. The AAR overrides the tag dispatch system. You can add it back in to + * guarantee that this activity starts when receiving a beamed message. For now, this code + * uses the tag dispatch system. + */ + NdefMessage msg = new NdefMessage(NdefRecord.createMime(Constants.NFC_MIME, + mNfcKeyringBytes), NdefRecord.createApplicationRecord(Constants.PACKAGE_NAME)); + return msg; + } + }; + + // Implementation for the OnNdefPushCompleteCallback interface + mNdefCompleteCallback = new NfcAdapter.OnNdefPushCompleteCallback() { + @Override + public void onNdefPushComplete(NfcEvent event) { + // A handler is needed to send messages to the activity when this + // callback occurs, because it happens from a binder thread + mNfcHandler.obtainMessage(NFC_SENT).sendToTarget(); + } + }; + + // Check for available NFC Adapter + mNfcAdapter = NfcAdapter.getDefaultAdapter(this); + if (mNfcAdapter != null) { + /* + * Retrieve mNfcKeyringBytes here asynchronously (to not block the UI) + * and init nfc adapter afterwards. + * mNfcKeyringBytes can not be retrieved in createNdefMessage, because this process + * has no permissions to query the Uri. + */ + AsyncTask<NfcAdapter, Void, Void> initTask = + new AsyncTask<NfcAdapter, Void, Void>() { + protected Void doInBackground(NfcAdapter... adapter) { + try { + Uri blobUri = + KeychainContract.KeyRingData.buildPublicKeyRingUri(dataUri); + mNfcKeyringBytes = ProviderHelper.getPGPKeyRing( + ViewKeyActivity.this, blobUri).getEncoded(); + } catch (IOException e) { + Log.e(Constants.TAG, "Error parsing keyring", e); + } catch (ProviderHelper.NotFoundException e) { + Log.e(Constants.TAG, "key not found!", e); + } + return null; + } + + protected void onPostExecute(Void result) { + // Register callback to set NDEF message + mNfcAdapter.setNdefPushMessageCallback(mNdefCallback + , ViewKeyActivity.this); + // Register callback to listen for message-sent success + mNfcAdapter.setOnNdefPushCompleteCallback(mNdefCompleteCallback, + ViewKeyActivity.this); + } + }; + + initTask.execute(); + } + } + } + + /** + * NFC: This handler receives a message from onNdefPushComplete + */ + private final Handler mNfcHandler = new Handler() { + @Override + public void handleMessage(Message msg) { + switch (msg.what) { + case NFC_SENT: + AppMsg.makeText(ViewKeyActivity.this, R.string.nfc_successfull, + AppMsg.STYLE_INFO).show(); + break; + } + } + }; + } |