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[bramble-core] Add DB method for getting contact by handshake key

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This commit is contained in:
Torsten Grote
2019-10-15 10:12:59 -03:00
parent f45d00e23c
commit 5f29ab3b40
3 changed files with 85 additions and 0 deletions
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10
bramble-core/src/main/java/org/briarproject/bramble/db/Database.java
View File

@@ -267,6 +267,16 @@ interface Database<T> {
*/
Collection<ContactId> getContacts(T txn, AuthorId local) throws DbException;
/**
* Returns the contact with the given {@code handshakePublicKey}
* for the given local pseudonym or {@code null} if none exists.
* <p/>
* Read-only.
*/
@Nullable
Contact getContact(T txn, PublicKey handshakePublicKey, AuthorId local)
throws DbException;
/**
* Returns the group with the given ID.
* <p/>

37
bramble-core/src/main/java/org/briarproject/bramble/db/JdbcDatabase.java
View File

@@ -1465,6 +1465,43 @@ abstract class JdbcDatabase implements Database<Connection> {
}
}
@Nullable
@Override
public Contact getContact(Connection txn, PublicKey handshakePublicKey,
AuthorId localAuthorId) throws DbException {
PreparedStatement ps = null;
ResultSet rs = null;
try {
String sql = "SELECT contactId, authorId, formatVersion, name,"
+ " alias, publicKey, verified"
+ " FROM contacts"
+ " WHERE handshakePublicKey = ? AND localAuthorId = ?";
ps = txn.prepareStatement(sql);
ps.setBytes(1, handshakePublicKey.getEncoded());
ps.setBytes(2, localAuthorId.getBytes());
rs = ps.executeQuery();
if (!rs.next()) return null;
ContactId contactId = new ContactId(rs.getInt(1));
AuthorId authorId = new AuthorId(rs.getBytes(2));
int formatVersion = rs.getInt(3);
String name = rs.getString(4);
String alias = rs.getString(5);
PublicKey publicKey = new SignaturePublicKey(rs.getBytes(6));
boolean verified = rs.getBoolean(7);
if (rs.next()) throw new DbException();
rs.close();
ps.close();
Author author =
new Author(authorId, formatVersion, name, publicKey);
return new Contact(contactId, author, localAuthorId, alias,
handshakePublicKey, verified);
} catch (SQLException e) {
tryToClose(rs, LOG, WARNING);
tryToClose(ps, LOG, WARNING);
throw new DbException(e);
}
}
@Override
public Group getGroup(Connection txn, GroupId g) throws DbException {
PreparedStatement ps = null;