mirror of
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255 lines
13 KiB
Java
255 lines
13 KiB
Java
package org.thoughtcrime.securesms.jobs;
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import android.content.Context;
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import android.util.Log;
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import android.util.Pair;
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import org.thoughtcrime.securesms.ApplicationContext;
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import org.thoughtcrime.securesms.crypto.MasterSecret;
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import org.thoughtcrime.securesms.crypto.SecurityEvent;
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import org.thoughtcrime.securesms.crypto.storage.TextSecureAxolotlStore;
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import org.thoughtcrime.securesms.crypto.storage.TextSecureSessionStore;
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import org.thoughtcrime.securesms.database.DatabaseFactory;
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import org.thoughtcrime.securesms.database.EncryptingSmsDatabase;
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import org.thoughtcrime.securesms.database.MmsDatabase;
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import org.thoughtcrime.securesms.database.NoSuchMessageException;
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import org.thoughtcrime.securesms.database.PushDatabase;
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import org.thoughtcrime.securesms.groups.GroupMessageProcessor;
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import org.thoughtcrime.securesms.jobs.requirements.MasterSecretRequirement;
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import org.thoughtcrime.securesms.mms.IncomingMediaMessage;
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import org.thoughtcrime.securesms.notifications.MessageNotifier;
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import org.thoughtcrime.securesms.recipients.RecipientFactory;
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import org.thoughtcrime.securesms.recipients.RecipientFormattingException;
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import org.thoughtcrime.securesms.recipients.Recipients;
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import org.thoughtcrime.securesms.service.KeyCachingService;
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import org.thoughtcrime.securesms.sms.IncomingEncryptedMessage;
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import org.thoughtcrime.securesms.sms.IncomingEndSessionMessage;
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import org.thoughtcrime.securesms.sms.IncomingPreKeyBundleMessage;
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import org.thoughtcrime.securesms.sms.IncomingTextMessage;
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import org.thoughtcrime.securesms.util.TextSecurePreferences;
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import org.whispersystems.jobqueue.JobParameters;
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import org.whispersystems.libaxolotl.DuplicateMessageException;
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import org.whispersystems.libaxolotl.InvalidKeyException;
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import org.whispersystems.libaxolotl.InvalidKeyIdException;
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import org.whispersystems.libaxolotl.InvalidMessageException;
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import org.whispersystems.libaxolotl.InvalidVersionException;
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import org.whispersystems.libaxolotl.LegacyMessageException;
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import org.whispersystems.libaxolotl.NoSessionException;
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import org.whispersystems.libaxolotl.UntrustedIdentityException;
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import org.whispersystems.libaxolotl.state.AxolotlStore;
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import org.whispersystems.libaxolotl.state.SessionStore;
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import org.whispersystems.libaxolotl.util.guava.Optional;
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import org.whispersystems.textsecure.api.messages.TextSecureEnvelope;
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import org.whispersystems.textsecure.api.messages.TextSecureGroup;
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import org.whispersystems.textsecure.api.messages.TextSecureMessage;
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import org.whispersystems.textsecure.api.crypto.TextSecureCipher;
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import org.whispersystems.textsecure.util.Base64;
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import ws.com.google.android.mms.MmsException;
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public class PushDecryptJob extends MasterSecretJob {
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public static final String TAG = PushDecryptJob.class.getSimpleName();
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private final long messageId;
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public PushDecryptJob(Context context, long messageId) {
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super(context, JobParameters.newBuilder()
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.withPersistence()
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.withRequirement(new MasterSecretRequirement(context))
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.create());
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this.messageId = messageId;
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}
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@Override
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public void onAdded() {
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if (KeyCachingService.getMasterSecret(context) == null) {
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MessageNotifier.updateNotification(context, null);
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}
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}
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@Override
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public void onRun(MasterSecret masterSecret) throws NoSuchMessageException {
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PushDatabase database = DatabaseFactory.getPushDatabase(context);
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TextSecureEnvelope envelope = database.get(messageId);
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handleMessage(masterSecret, envelope);
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database.delete(messageId);
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}
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@Override
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public boolean onShouldRetryThrowable(Throwable throwable) {
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return false;
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}
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@Override
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public void onCanceled() {
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}
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private void handleMessage(MasterSecret masterSecret, TextSecureEnvelope envelope) {
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try {
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Recipients recipients = RecipientFactory.getRecipientsFromString(context, envelope.getSource(), false);
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long recipientId = recipients.getPrimaryRecipient().getRecipientId();
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int deviceId = envelope.getSourceDevice();
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AxolotlStore axolotlStore = new TextSecureAxolotlStore(context, masterSecret);
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TextSecureCipher cipher = new TextSecureCipher(axolotlStore, recipientId, deviceId);
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TextSecureMessage message = cipher.decrypt(envelope);
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if (message.isEndSession()) handleEndSessionMessage(masterSecret, recipientId, envelope, message);
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else if (message.isGroupUpdate()) handleGroupMessage(masterSecret, envelope, message);
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else if (message.getAttachments().isPresent()) handleMediaMessage(masterSecret, envelope, message);
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else handleTextMessage(masterSecret, envelope, message);
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if (envelope.isPreKeyWhisperMessage()) {
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ApplicationContext.getInstance(context).getJobManager().add(new RefreshPreKeysJob(context));
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}
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} catch (InvalidVersionException e) {
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Log.w(TAG, e);
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handleInvalidVersionMessage(masterSecret, envelope);
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} catch (InvalidMessageException | InvalidKeyIdException | InvalidKeyException | MmsException | RecipientFormattingException e) {
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Log.w(TAG, e);
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handleCorruptMessage(masterSecret, envelope);
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} catch (NoSessionException e) {
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Log.w(TAG, e);
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handleNoSessionMessage(masterSecret, envelope);
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} catch (LegacyMessageException e) {
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Log.w(TAG, e);
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handleLegacyMessage(masterSecret, envelope);
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} catch (DuplicateMessageException e) {
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Log.w(TAG, e);
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handleDuplicateMessage(masterSecret, envelope);
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} catch (UntrustedIdentityException e) {
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Log.w(TAG, e);
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handleUntrustedIdentityMessage(masterSecret, envelope);
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}
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}
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private void handleEndSessionMessage(MasterSecret masterSecret, long recipientId,
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TextSecureEnvelope envelope, TextSecureMessage message)
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{
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IncomingTextMessage incomingTextMessage = new IncomingTextMessage(envelope.getSource(),
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envelope.getSourceDevice(),
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message.getTimestamp(),
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"", Optional.<TextSecureGroup>absent());
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IncomingEndSessionMessage incomingEndSessionMessage = new IncomingEndSessionMessage(incomingTextMessage);
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EncryptingSmsDatabase database = DatabaseFactory.getEncryptingSmsDatabase(context);
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Pair<Long, Long> messageAndThreadId = database.insertMessageInbox(masterSecret, incomingEndSessionMessage);
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SessionStore sessionStore = new TextSecureSessionStore(context, masterSecret);
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sessionStore.deleteAllSessions(recipientId);
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SecurityEvent.broadcastSecurityUpdateEvent(context, messageAndThreadId.second);
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MessageNotifier.updateNotification(context, masterSecret, messageAndThreadId.second);
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}
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private void handleGroupMessage(MasterSecret masterSecret, TextSecureEnvelope envelope, TextSecureMessage message) {
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GroupMessageProcessor.process(context, masterSecret, envelope, message);
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}
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private void handleMediaMessage(MasterSecret masterSecret, TextSecureEnvelope envelope, TextSecureMessage message)
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throws MmsException
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{
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String localNumber = TextSecurePreferences.getLocalNumber(context);
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MmsDatabase database = DatabaseFactory.getMmsDatabase(context);
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IncomingMediaMessage mediaMessage = new IncomingMediaMessage(masterSecret, envelope.getSource(),
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localNumber, message.getTimestamp(),
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Optional.fromNullable(envelope.getRelay()),
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message.getBody(),
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message.getGroupInfo(),
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message.getAttachments());
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Pair<Long, Long> messageAndThreadId;
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if (message.isSecure()) {
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messageAndThreadId = database.insertSecureDecryptedMessageInbox(masterSecret, mediaMessage, -1);
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} else {
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messageAndThreadId = database.insertMessageInbox(masterSecret, mediaMessage, null, -1);
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}
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ApplicationContext.getInstance(context)
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.getJobManager()
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.add(new AttachmentDownloadJob(context, messageAndThreadId.first));
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MessageNotifier.updateNotification(context, masterSecret, messageAndThreadId.second);
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}
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private void handleTextMessage(MasterSecret masterSecret, TextSecureEnvelope envelope, TextSecureMessage message) {
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EncryptingSmsDatabase database = DatabaseFactory.getEncryptingSmsDatabase(context);
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String body = message.getBody().isPresent() ? message.getBody().get() : "";
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IncomingTextMessage textMessage = new IncomingTextMessage(envelope.getSource(),
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envelope.getSourceDevice(),
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message.getTimestamp(), body,
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message.getGroupInfo());
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if (message.isSecure()) {
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textMessage = new IncomingEncryptedMessage(textMessage, body);
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}
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Pair<Long, Long> messageAndThreadId = database.insertMessageInbox(masterSecret, textMessage);
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MessageNotifier.updateNotification(context, masterSecret, messageAndThreadId.second);
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}
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private void handleInvalidVersionMessage(MasterSecret masterSecret, TextSecureEnvelope envelope) {
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Pair<Long, Long> messageAndThreadId = insertPlaceholder(masterSecret, envelope);
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DatabaseFactory.getEncryptingSmsDatabase(context).markAsInvalidVersionKeyExchange(messageAndThreadId.first);
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MessageNotifier.updateNotification(context, masterSecret, messageAndThreadId.second);
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}
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private void handleCorruptMessage(MasterSecret masterSecret, TextSecureEnvelope envelope) {
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Pair<Long, Long> messageAndThreadId = insertPlaceholder(masterSecret, envelope);
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DatabaseFactory.getEncryptingSmsDatabase(context).markAsDecryptFailed(messageAndThreadId.first);
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MessageNotifier.updateNotification(context, masterSecret, messageAndThreadId.second);
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}
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private void handleNoSessionMessage(MasterSecret masterSecret, TextSecureEnvelope envelope) {
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Pair<Long, Long> messageAndThreadId = insertPlaceholder(masterSecret, envelope);
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DatabaseFactory.getEncryptingSmsDatabase(context).markAsNoSession(messageAndThreadId.first);
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MessageNotifier.updateNotification(context, masterSecret, messageAndThreadId.second);
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}
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private void handleLegacyMessage(MasterSecret masterSecret, TextSecureEnvelope envelope) {
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Pair<Long, Long> messageAndThreadId = insertPlaceholder(masterSecret, envelope);
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DatabaseFactory.getEncryptingSmsDatabase(context).markAsLegacyVersion(messageAndThreadId.first);
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MessageNotifier.updateNotification(context, masterSecret, messageAndThreadId.second);
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}
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private void handleDuplicateMessage(MasterSecret masterSecret, TextSecureEnvelope envelope) {
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Pair<Long, Long> messageAndThreadId = insertPlaceholder(masterSecret, envelope);
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DatabaseFactory.getEncryptingSmsDatabase(context).markAsDecryptDuplicate(messageAndThreadId.first);
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MessageNotifier.updateNotification(context, masterSecret, messageAndThreadId.second);
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}
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private void handleUntrustedIdentityMessage(MasterSecret masterSecret, TextSecureEnvelope envelope) {
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String encoded = Base64.encodeBytes(envelope.getMessage());
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IncomingTextMessage textMessage = new IncomingTextMessage(envelope.getSource(), envelope.getSourceDevice(),
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envelope.getTimestamp(), encoded,
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Optional.<TextSecureGroup>absent());
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IncomingPreKeyBundleMessage bundleMessage = new IncomingPreKeyBundleMessage(textMessage, encoded);
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Pair<Long, Long> messageAndThreadId = DatabaseFactory.getEncryptingSmsDatabase(context)
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.insertMessageInbox(masterSecret, bundleMessage);
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MessageNotifier.updateNotification(context, masterSecret, messageAndThreadId.second);
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}
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private Pair<Long, Long> insertPlaceholder(MasterSecret masterSecret, TextSecureEnvelope envelope) {
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EncryptingSmsDatabase database = DatabaseFactory.getEncryptingSmsDatabase(context);
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IncomingTextMessage textMessage = new IncomingTextMessage(envelope.getSource(), envelope.getSourceDevice(),
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envelope.getTimestamp(), "",
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Optional.<TextSecureGroup>absent());
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textMessage = new IncomingEncryptedMessage(textMessage, "");
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return database.insertMessageInbox(masterSecret, textMessage);
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}
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}
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