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Merge branch 'contact-exchange-refactoring' into 'master'

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Contact exchange refactoring

See merge request briar/briar!1106
This commit is contained in:
Torsten Grote
2019-05-24 17:33:21 +00:00
parent cff5e53d09 d80c77f466
commit 4a92625a7b
19 changed files with 409 additions and 331 deletions
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24
bramble-api/src/main/java/org/briarproject/bramble/api/contact/ContactExchangeManager.java Normal file
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@@ -0,0 +1,24 @@
package org.briarproject.bramble.api.contact;
import org.briarproject.bramble.api.crypto.SecretKey;
import org.briarproject.bramble.api.db.ContactExistsException;
import org.briarproject.bramble.api.db.DbException;
import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
import org.briarproject.bramble.api.plugin.TransportId;
import org.briarproject.bramble.api.plugin.duplex.DuplexTransportConnection;
import java.io.IOException;
@NotNullByDefault
public interface ContactExchangeManager {
/**
* Exchanges contact information with a remote peer.
*
* @param alice Whether the local peer takes the role of Alice
* @return The newly added contact
* @throws ContactExistsException If the contact already exists
*/
Contact exchangeContacts(TransportId t, DuplexTransportConnection conn,
SecretKey masterKey, boolean alice) throws IOException, DbException;
}

47
bramble-api/src/main/java/org/briarproject/bramble/api/contact/ContactExchangeTask.java
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@@ -1,47 +0,0 @@
package org.briarproject.bramble.api.contact;
import org.briarproject.bramble.api.crypto.SecretKey;
import org.briarproject.bramble.api.identity.LocalAuthor;
import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
import org.briarproject.bramble.api.plugin.TransportId;
import org.briarproject.bramble.api.plugin.duplex.DuplexTransportConnection;
/**
* A task for conducting a contact information exchange with a remote peer.
*/
@NotNullByDefault
public interface ContactExchangeTask {
/**
* The current version of the contact exchange protocol.
*/
byte PROTOCOL_VERSION = 1;
/**
* Label for deriving Alice's header key from the master key.
*/
String ALICE_KEY_LABEL =
"org.briarproject.bramble.contact/ALICE_HEADER_KEY";
/**
* Label for deriving Bob's header key from the master key.
*/
String BOB_KEY_LABEL = "org.briarproject.bramble.contact/BOB_HEADER_KEY";
/**
* Label for deriving Alice's key binding nonce from the master key.
*/
String ALICE_NONCE_LABEL = "org.briarproject.bramble.contact/ALICE_NONCE";
/**
* Label for deriving Bob's key binding nonce from the master key.
*/
String BOB_NONCE_LABEL = "org.briarproject.bramble.contact/BOB_NONCE";
/**
* Exchanges contact information with a remote peer.
*/
void startExchange(LocalAuthor localAuthor, SecretKey masterKey,
DuplexTransportConnection conn, TransportId transportId,
boolean alice);
}

5
bramble-api/src/main/java/org/briarproject/bramble/api/contact/ContactManager.java
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@@ -93,6 +93,11 @@ public interface ContactManager {
*/
Contact getContact(ContactId c) throws DbException;
/**
* Returns the contact with the given ID.
*/
Contact getContact(Transaction txn, ContactId c) throws DbException;
/**
* Returns the contact with the given remoteAuthorId
* that was added by the LocalAuthor with the given localAuthorId

32
bramble-api/src/main/java/org/briarproject/bramble/api/contact/event/ContactExchangeFailedEvent.java
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@@ -1,32 +0,0 @@
package org.briarproject.bramble.api.contact.event;
import org.briarproject.bramble.api.event.Event;
import org.briarproject.bramble.api.identity.Author;
import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
import javax.annotation.Nullable;
@NotNullByDefault
public class ContactExchangeFailedEvent extends Event {
@Nullable
private final Author duplicateRemoteAuthor;
public ContactExchangeFailedEvent(@Nullable Author duplicateRemoteAuthor) {
this.duplicateRemoteAuthor = duplicateRemoteAuthor;
}
public ContactExchangeFailedEvent() {
this(null);
}
@Nullable
public Author getDuplicateRemoteAuthor() {
return duplicateRemoteAuthor;
}
public boolean wasDuplicateContact() {
return duplicateRemoteAuthor != null;
}
}

20
bramble-api/src/main/java/org/briarproject/bramble/api/contact/event/ContactExchangeSucceededEvent.java
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@@ -1,20 +0,0 @@
package org.briarproject.bramble.api.contact.event;
import org.briarproject.bramble.api.event.Event;
import org.briarproject.bramble.api.identity.Author;
import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
@NotNullByDefault
public class ContactExchangeSucceededEvent extends Event {
private final Author remoteAuthor;
public ContactExchangeSucceededEvent(Author remoteAuthor) {
this.remoteAuthor = remoteAuthor;
}
public Author getRemoteAuthor() {
return remoteAuthor;
}
}

19
bramble-api/src/main/java/org/briarproject/bramble/api/db/ContactExistsException.java
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@@ -1,8 +1,27 @@
package org.briarproject.bramble.api.db;
import org.briarproject.bramble.api.identity.Author;
import org.briarproject.bramble.api.identity.AuthorId;
/**
* Thrown when a duplicate contact is added to the database. This exception may
* occur due to concurrent updates and does not indicate a database error.
*/
public class ContactExistsException extends DbException {
private final AuthorId local;
private final Author remote;
public ContactExistsException(AuthorId local, Author remote) {
this.local = local;
this.remote = remote;
}
public AuthorId getLocalAuthorId() {
return local;
}
public Author getRemoteAuthor() {
return remote;
}
}