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Code Issues Projects Releases Wiki Activity

Add MailboxPairViewModel that decodes Mailbox QR code

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This commit is contained in:
Daniel Lublin
2021-11-11 14:07:05 +01:00
parent 1809be4656
commit 77a986318e
3 changed files with 116 additions and 0 deletions
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2
briar-android/src/main/java/org/briarproject/briar/android/AppModule.java
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@@ -43,6 +43,7 @@ import org.briarproject.briar.android.hotspot.HotspotModule;
import org.briarproject.briar.android.introduction.IntroductionModule;
import org.briarproject.briar.android.logging.LoggingModule;
import org.briarproject.briar.android.login.LoginModule;
import org.briarproject.briar.android.mailbox.MailboxModule;
import org.briarproject.briar.android.navdrawer.NavDrawerModule;
import org.briarproject.briar.android.privategroup.conversation.GroupConversationModule;
import org.briarproject.briar.android.privategroup.list.GroupListModule;
@@ -103,6 +104,7 @@ import static org.briarproject.briar.android.TestingConstants.IS_DEBUG_BUILD;
SharingModule.class,
HotspotModule.class,
TransferDataModule.class,
MailboxModule.class,
})
public class AppModule {

19
briar-android/src/main/java/org/briarproject/briar/android/mailbox/MailboxModule.java Normal file
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@@ -0,0 +1,19 @@
package org.briarproject.briar.android.mailbox;
import org.briarproject.briar.android.viewmodel.ViewModelKey;
import androidx.lifecycle.ViewModel;
import dagger.Binds;
import dagger.Module;
import dagger.multibindings.IntoMap;
@Module
public interface MailboxModule {
@Binds
@IntoMap
@ViewModelKey(MailboxPairViewModel.class)
ViewModel bindMailboxViewModel(
MailboxPairViewModel mailboxPairViewModel);
}

95
briar-android/src/main/java/org/briarproject/briar/android/mailbox/MailboxPairViewModel.java Normal file
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@@ -0,0 +1,95 @@
package org.briarproject.briar.android.mailbox;
import android.app.Application;
import com.google.zxing.Result;
import org.briarproject.bramble.api.crypto.CryptoComponent;
import org.briarproject.bramble.api.db.DatabaseExecutor;
import org.briarproject.bramble.api.db.TransactionManager;
import org.briarproject.bramble.api.lifecycle.IoExecutor;
import org.briarproject.bramble.api.lifecycle.LifecycleManager;
import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
import org.briarproject.bramble.api.system.AndroidExecutor;
import org.briarproject.bramble.util.StringUtils;
import org.briarproject.briar.android.qrcode.QrCodeDecoder;
import org.briarproject.briar.android.viewmodel.DbViewModel;
import java.nio.charset.Charset;
import java.util.Arrays;
import java.util.concurrent.Executor;
import java.util.logging.Logger;
import javax.inject.Inject;
import androidx.annotation.Nullable;
import androidx.annotation.UiThread;
import static java.util.logging.Level.INFO;
import static java.util.logging.Logger.getLogger;
@UiThread
@NotNullByDefault
class MailboxPairViewModel extends DbViewModel
implements QrCodeDecoder.ResultCallback {
private static final Logger LOG =
getLogger(MailboxPairViewModel.class.getName());
private static final int VERSION_REQUIRED = 32;
@SuppressWarnings("CharsetObjectCanBeUsed") // Requires minSdkVersion >= 19
private static final Charset ISO_8859_1 = Charset.forName("ISO-8859-1");
private final CryptoComponent crypto;
private final QrCodeDecoder qrCodeDecoder;
@Nullable
private String onionAddress = null;
@Nullable
private String setupToken = null;
@Inject
MailboxPairViewModel(
Application app,
@DatabaseExecutor Executor dbExecutor,
LifecycleManager lifecycleManager,
TransactionManager db,
AndroidExecutor androidExecutor,
@IoExecutor Executor ioExecutor,
CryptoComponent crypto) {
super(app, dbExecutor, lifecycleManager, db, androidExecutor);
this.crypto = crypto;
qrCodeDecoder = new QrCodeDecoder(androidExecutor, ioExecutor, this);
}
@Override
public void onQrCodeDecoded(Result result) {
LOG.info("Got result from decoder");
byte[] bytes = result.getText().getBytes(ISO_8859_1);
if (LOG.isLoggable(INFO))
LOG.info("QR code length in bytes: " + bytes.length);
if (bytes.length != 65) {
LOG.info("QR code has wrong length");
return;
}
if (LOG.isLoggable(INFO))
LOG.info("QR code version: " + bytes[0]);
if (bytes[0] != VERSION_REQUIRED) {
LOG.info("QR code has wrong version");
return;
}
byte[] onionPubKey = Arrays.copyOfRange(bytes, 1, 33);
onionAddress = crypto.encodeOnionAddress(onionPubKey);
setupToken = StringUtils.toHexString(Arrays.copyOfRange(bytes, 33, 65))
.toLowerCase();
LOG.info("QR code is valid");
}
QrCodeDecoder getQrCodeDecoder() {
return qrCodeDecoder;
}
}