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authorDominik Schürmann <dominik@dominikschuermann.de>2015-08-31 19:08:44 +0200
committerDominik Schürmann <dominik@dominikschuermann.de>2015-09-30 12:45:21 +0200
commit051e4b8a7908a1dc28f341612569d2d7664c6f77 (patch)
treea6042472393f12a8e7af61e9ab71376a9027f020 /OpenKeychain/src/main/java/org/sufficientlysecure/keychain
parent08e25747da20e399096a2e0c1c4afcce67898718 (diff)
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Improve NFC exception handling, fixes RuntimeExceptions
Diffstat (limited to 'OpenKeychain/src/main/java/org/sufficientlysecure/keychain')
-rw-r--r--OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateKeyActivity.java4
-rw-r--r--OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateYubiKeyImportFragment.java2
-rw-r--r--OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ImportKeysActivity.java2
-rw-r--r--OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/NfcOperationActivity.java39
-rw-r--r--OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyActivity.java2
-rw-r--r--OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/base/BaseNfcActivity.java76
6 files changed, 66 insertions, 59 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateKeyActivity.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateKeyActivity.java
index bd355da19..94b5f4e4b 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateKeyActivity.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateKeyActivity.java
@@ -155,7 +155,7 @@ public class CreateKeyActivity extends BaseNfcActivity {
}
@Override
- protected void onNfcPostExecute() throws IOException {
+ protected void onNfcPostExecute() {
if (mCurrentFragment instanceof NfcListenerFragment) {
((NfcListenerFragment) mCurrentFragment).onNfcPostExecute();
return;
@@ -257,7 +257,7 @@ public class CreateKeyActivity extends BaseNfcActivity {
interface NfcListenerFragment {
void doNfcInBackground() throws IOException;
- void onNfcPostExecute() throws IOException;
+ void onNfcPostExecute();
}
@Override
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateYubiKeyImportFragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateYubiKeyImportFragment.java
index d88e6b9f9..f7925b7f4 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateYubiKeyImportFragment.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateYubiKeyImportFragment.java
@@ -208,7 +208,7 @@ public class CreateYubiKeyImportFragment
}
@Override
- public void onNfcPostExecute() throws IOException {
+ public void onNfcPostExecute() {
setData();
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ImportKeysActivity.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ImportKeysActivity.java
index 4ef6c40dc..c578bcf15 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ImportKeysActivity.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ImportKeysActivity.java
@@ -451,7 +451,7 @@ public class ImportKeysActivity extends BaseNfcActivity
}
@Override
- protected void onNfcPostExecute() throws IOException {
+ protected void onNfcPostExecute() {
// either way, finish after NFC AsyncTask
finish();
}
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/NfcOperationActivity.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/NfcOperationActivity.java
index 1ff87541a..d9b31de98 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/NfcOperationActivity.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/NfcOperationActivity.java
@@ -27,6 +27,7 @@ import android.view.View;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.TextView;
+import android.widget.Toast;
import android.widget.ViewAnimator;
import org.sufficientlysecure.keychain.Constants;
@@ -72,7 +73,7 @@ public class NfcOperationActivity extends BaseNfcActivity {
private RequiredInputParcel mRequiredInput;
private Intent mServiceIntent;
- private static final byte[] BLANK_FINGERPRINT = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
+ private static final byte[] BLANK_FINGERPRINT = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
private CryptoInputParcel mInputParcel;
@@ -245,7 +246,7 @@ public class NfcOperationActivity extends BaseNfcActivity {
}
@Override
- protected void onNfcPostExecute() throws IOException {
+ protected void onNfcPostExecute() {
if (mServiceIntent != null) {
// if we're triggered by OpenPgpService
// save updated cryptoInputParcel in cache
@@ -276,6 +277,7 @@ public class NfcOperationActivity extends BaseNfcActivity {
}
}
}
+
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
@@ -292,27 +294,14 @@ public class NfcOperationActivity extends BaseNfcActivity {
vAnimator.setDisplayedChild(3);
}
- private boolean shouldPutKey(byte[] fingerprint, int idx) throws IOException {
- byte[] cardFingerprint = nfcGetFingerprint(idx);
-
- // Slot is empty, or contains this key already. PUT KEY operation is safe
- if (cardFingerprint == null ||
- Arrays.equals(cardFingerprint, BLANK_FINGERPRINT) ||
- Arrays.equals(cardFingerprint, fingerprint)) {
- return true;
- }
-
- // Slot already contains a different key; don't overwrite it.
- return false;
- }
-
@Override
- public void handlePinError() {
+ public void onPinError() {
// avoid a loop
Preferences prefs = Preferences.getPreferences(this);
if (prefs.useDefaultYubiKeyPin()) {
- toast(getString(R.string.error_pin_nodefault));
+ // use Toast because activity is finished afterwards
+ Toast.makeText(this, R.string.error_pin_nodefault, Toast.LENGTH_LONG).show();
setResult(RESULT_CANCELED);
finish();
return;
@@ -323,4 +312,18 @@ public class NfcOperationActivity extends BaseNfcActivity {
this, mRequiredInput.getMasterKeyId(), mRequiredInput.getSubKeyId());
}
+ private boolean shouldPutKey(byte[] fingerprint, int idx) throws IOException {
+ byte[] cardFingerprint = nfcGetFingerprint(idx);
+
+ // Slot is empty, or contains this key already. PUT KEY operation is safe
+ if (cardFingerprint == null ||
+ Arrays.equals(cardFingerprint, BLANK_FINGERPRINT) ||
+ Arrays.equals(cardFingerprint, fingerprint)) {
+ return true;
+ }
+
+ // Slot already contains a different key; don't overwrite it.
+ return false;
+ }
+
}
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 930c1fc26..de859724b 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyActivity.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyActivity.java
@@ -554,7 +554,7 @@ public class ViewKeyActivity extends BaseNfcActivity implements
}
@Override
- protected void onNfcPostExecute() throws IOException {
+ protected void onNfcPostExecute() {
long yubiKeyId = KeyFormattingUtils.getKeyIdFromFingerprint(mNfcFingerprints);
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/base/BaseNfcActivity.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/base/BaseNfcActivity.java
index 813ed07fc..03d0c8ec4 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/base/BaseNfcActivity.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/base/BaseNfcActivity.java
@@ -103,7 +103,7 @@ public abstract class BaseNfcActivity extends BaseActivity {
/**
* Override to handle result of NFC operations (UI thread)
*/
- protected void onNfcPostExecute() throws IOException {
+ protected void onNfcPostExecute() {
final long subKeyId = KeyFormattingUtils.getKeyIdFromFingerprint(mNfcFingerprints);
@@ -134,9 +134,19 @@ public abstract class BaseNfcActivity extends BaseActivity {
Notify.create(this, error, Style.WARN).show();
}
+ /**
+ * Override to do something when PIN is wrong, e.g., clear passphrases (UI thread)
+ */
+ protected void onPinError() {
+ // use Toast because activity is finished afterwards
+ Toast.makeText(this, R.string.error_pin_wrong, Toast.LENGTH_LONG).show();
+ setResult(RESULT_CANCELED);
+ finish();
+ }
+
public void handleIntentInBackground(final Intent intent) {
// Actual NFC operations are executed in doInBackground to not block the UI thread
- new AsyncTask<Void, Void, Exception>() {
+ new AsyncTask<Void, Void, IOException>() {
@Override
protected void onPreExecute() {
super.onPreExecute();
@@ -144,7 +154,7 @@ public abstract class BaseNfcActivity extends BaseActivity {
}
@Override
- protected Exception doInBackground(Void... params) {
+ protected IOException doInBackground(Void... params) {
try {
handleTagDiscoveredIntent(intent);
} catch (IOException e) {
@@ -155,7 +165,7 @@ public abstract class BaseNfcActivity extends BaseActivity {
}
@Override
- protected void onPostExecute(Exception exception) {
+ protected void onPostExecute(IOException exception) {
super.onPostExecute(exception);
if (exception != null) {
@@ -163,11 +173,7 @@ public abstract class BaseNfcActivity extends BaseActivity {
return;
}
- try {
- onNfcPostExecute();
- } catch (IOException e) {
- handleNfcError(e);
- }
+ onNfcPostExecute();
}
}.execute();
}
@@ -219,22 +225,30 @@ public abstract class BaseNfcActivity extends BaseActivity {
}
}
- private void handleNfcError(Exception e) {
- Log.e(Constants.TAG, "nfc error", e);
+ private void handleNfcError(IOException e) {
if (e instanceof TagLostException) {
onNfcError(getString(R.string.error_nfc_tag_lost));
return;
}
+ if (e instanceof IsoDepNotSupportedException) {
+ onNfcError(getString(R.string.error_nfc_iso_dep_not_supported));
+ return;
+ }
+
short status;
if (e instanceof CardException) {
status = ((CardException) e).getResponseCode();
} else {
status = -1;
}
- // When entering a PIN, a status of 63CX indicates X attempts remaining.
- if ((status & (short)0xFFF0) == 0x63C0) {
+
+ // Wrong PIN, a status of 63CX indicates X attempts remaining.
+ if ((status & (short) 0xFFF0) == 0x63C0) {
+ // hook to do something different when PIN is wrong
+ onPinError();
+
int tries = status & 0x000F;
onNfcError(getResources().getQuantityString(R.plurals.error_pin, tries, tries));
return;
@@ -305,12 +319,6 @@ public abstract class BaseNfcActivity extends BaseActivity {
}
- public void handlePinError() {
- toast("Wrong PIN!");
- setResult(RESULT_CANCELED);
- finish();
- }
-
/**
* Called when the system is about to start resuming a previous activity,
* disables NFC Foreground Dispatch
@@ -335,7 +343,7 @@ public abstract class BaseNfcActivity extends BaseActivity {
protected void obtainYubiKeyPin(RequiredInputParcel requiredInput) {
- // shortcut if we only use the default yubikey pin
+ // shortcut if we only use the default YubiKey pin
Preferences prefs = Preferences.getPreferences(this);
if (prefs.useDefaultYubiKeyPin()) {
mPin = new Passphrase("123456");
@@ -343,10 +351,10 @@ public abstract class BaseNfcActivity extends BaseActivity {
}
try {
- Passphrase phrase = PassphraseCacheService.getCachedPassphrase(this,
+ Passphrase passphrase = PassphraseCacheService.getCachedPassphrase(this,
requiredInput.getMasterKeyId(), requiredInput.getSubKeyId());
- if (phrase != null) {
- mPin = phrase;
+ if (passphrase != null) {
+ mPin = passphrase;
return;
}
@@ -405,8 +413,7 @@ public abstract class BaseNfcActivity extends BaseActivity {
// Connect to the detected tag, setting a couple of settings
mIsoDep = IsoDep.get(detectedTag);
if (mIsoDep == null) {
- // TODO: better exception?
- throw new IOException("Tag does not support ISO-DEP (ISO 14443-4)!");
+ throw new IsoDepNotSupportedException("Tag does not support ISO-DEP (ISO 14443-4)");
}
mIsoDep.setTimeout(TIMEOUT); // timeout is set to 100 seconds to avoid cancellation during calculation
mIsoDep.connect();
@@ -684,7 +691,6 @@ public abstract class BaseNfcActivity extends BaseActivity {
+ Hex.toHexString(pin);
String response = nfcCommunicate(login); // login
if (!response.equals(accepted)) {
- handlePinError();
throw new CardException("Bad PIN!", parseCardStatus(response));
}
@@ -739,7 +745,6 @@ public abstract class BaseNfcActivity extends BaseActivity {
+ getHex(newPin);
String response = nfcCommunicate(changeReferenceDataApdu); // change PIN
if (!response.equals("9000")) {
- handlePinError();
throw new CardException("Failed to change PIN", parseCardStatus(response));
}
}
@@ -908,15 +913,6 @@ public abstract class BaseNfcActivity extends BaseActivity {
}
/**
- * Prints a message to the screen
- *
- * @param text the text which should be contained within the toast
- */
- protected void toast(String text) {
- Toast.makeText(this, text, Toast.LENGTH_LONG).show();
- }
-
- /**
* Receive new NFC Intents to this activity only by enabling foreground dispatch.
* This can only be done in onResume!
*/
@@ -982,6 +978,14 @@ public abstract class BaseNfcActivity extends BaseActivity {
return new String(Hex.encode(raw));
}
+ public class IsoDepNotSupportedException extends IOException {
+
+ public IsoDepNotSupportedException(String detailMessage) {
+ super(detailMessage);
+ }
+
+ }
+
public class CardException extends IOException {
private short mResponseCode;