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Merge pull request #1891 from k9mail/fix-crypto-cancelled-npe

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Fix NPE in MessageCryptoHelper.addCryptoResultAnnotationToMessage()
This commit is contained in:
cketti 2016-12-30 21:31:51 +01:00 committed by GitHub
commit b9147f119e
1 changed files with 29 additions and 12 deletions
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41
k9mail/src/main/java/com/fsck/k9/ui/crypto/MessageCryptoHelper.java
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@ -58,13 +58,14 @@ import org.openintents.openpgp.util.OpenPgpUtils;
public class MessageCryptoHelper {
private static final int INVALID_OPENPGP_RESULT_CODE = -1;
private static final MimeBodyPart NO_REPLACEMENT_PART = null;
public static final int REQUEST_CODE_USER_INTERACTION = 124;
public static final int PROGRESS_SIZE_THRESHOLD = 4096;
private static final int REQUEST_CODE_USER_INTERACTION = 124;
private static final int PROGRESS_SIZE_THRESHOLD = 4096;
private final Context context;
private final String openPgpProviderPackage;
private final Object callbackLock = new Object();
private final Deque<CryptoPart> partsToDecryptOrVerify = new ArrayDeque<>();
@Nullable
private MessageCryptoCallback callback;
@ -76,7 +77,6 @@ public class MessageCryptoHelper {
private MessageCryptoAnnotations messageAnnotations;
private Deque<CryptoPart> partsToDecryptOrVerify = new ArrayDeque<>();
private CryptoPart currentCryptoPart;
private Intent currentCryptoResult;
private Intent userInteractionResultIntent;
@ -554,8 +554,12 @@ public class MessageCryptoHelper {
}
private void onCryptoOperationCanceled() {
CryptoResultAnnotation errorPart = CryptoResultAnnotation.createOpenPgpCanceledAnnotation();
addCryptoResultAnnotationToMessage(errorPart);
// there are weird states that get us here when we're not actually processing any part. just skip in that case
// see https://github.com/k9mail/k-9/issues/1878
if (currentCryptoPart != null) {
CryptoResultAnnotation errorPart = CryptoResultAnnotation.createOpenPgpCanceledAnnotation();
addCryptoResultAnnotationToMessage(errorPart);
}
onCryptoFinished();
}
@ -579,8 +583,17 @@ public class MessageCryptoHelper {
}
private void onCryptoFinished() {
currentCryptoPart = null;
partsToDecryptOrVerify.removeFirst();
boolean currentPartIsFirstInQueue = partsToDecryptOrVerify.peekFirst() == currentCryptoPart;
if (!currentPartIsFirstInQueue) {
throw new IllegalStateException(
"Trying to remove part from queue that is not the currently processed one!");
}
if (currentCryptoPart != null) {
partsToDecryptOrVerify.removeFirst();
currentCryptoPart = null;
} else {
Log.e(K9.LOG_TAG, "Got to onCryptoFinished() with no part in processing!", new Throwable());
}
decryptOrVerifyNextPart();
}
@ -594,7 +607,7 @@ public class MessageCryptoHelper {
}
private void cleanupAfterProcessingFinished() {
partsToDecryptOrVerify = null;
partsToDecryptOrVerify.clear();
openPgpApi = null;
if (openPgpServiceConnection != null) {
openPgpServiceConnection.unbindFromService();
@ -613,11 +626,13 @@ public class MessageCryptoHelper {
throw new AssertionError("Callback may only be reattached for the same message!");
}
synchronized (callbackLock) {
if (queuedResult != null) {
Log.d(K9.LOG_TAG, "Returning cached result to reattached callback");
}
this.callback = callback;
deliverResult();
boolean hasCachedResult = queuedResult != null || queuedPendingIntent != null;
if (hasCachedResult) {
Log.d(K9.LOG_TAG, "Returning cached result or pending intent to reattached callback");
deliverResult();
}
}
}
@ -663,6 +678,8 @@ public class MessageCryptoHelper {
callback.startPendingIntentForCryptoHelper(
queuedPendingIntent.getIntentSender(), REQUEST_CODE_USER_INTERACTION, null, 0, 0, 0);
queuedPendingIntent = null;
} else {
throw new IllegalStateException("deliverResult() called with no result!");
}
}