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5e0aadd373f6fe3a0c5268f48d2cf4e4f22df910
Commit Graph

119 Commits

Author SHA1 Message Date
akwizgran
5e0aadd373 Moved the subscription and transport timestamps out of the contacts 
table so it's not necessary to hold a write lock on the (heavily used)
contacts table to update them.
 2011-08-14 14:46:12 +02:00
akwizgran
2c13e35dc4 Calculate the timestamp outside the subscription/transport update 
writer - this will allow it to be saved so new connections can work
out whether they should send updates.
 2011-08-14 13:36:21 +02:00
akwizgran
4497774311 Derive separate keys for each direction. 2011-08-14 12:18:16 +02:00
akwizgran
254da2da27 Removed the restriction that transport updates have to be written in 
delimited form.
 2011-08-14 11:41:56 +02:00
akwizgran
c2b0f0ab5a Each request packet should contain the unique ID of the offer to which 
it responds.
 2011-08-13 17:46:19 +02:00
akwizgran
e1b9ee247c Integration test for the protocol component. 2011-08-13 16:56:00 +02:00
akwizgran
8853c54930 Made the lock fairness test more precise. 2011-08-13 16:25:45 +02:00
akwizgran
36fc34993d Lock fairness test: check that fair ReentrantReadWriteLocks don't 
allow writers to starve. If this test passes on Java 5 and 6, we can
get rid of SynchronizedDatabaseComponent and merge
ReadWriteLockDatabaseComponent with DatabaseComponentImpl.
 2011-08-13 15:39:09 +02:00
akwizgran
9d25a819d1 Decoupled ProtocolReader (which belongs in the protocol component) 
from PacketReader (which belongs in the transport component).
 2011-08-13 14:18:16 +02:00
akwizgran
5b6fecfb43 Updated FileReadWriteTest to use the transport component for 
encrypting and decrypting packets. Moved the test to the main package
since it's an integration test for several components.
 2011-08-12 23:24:24 +02:00
akwizgran
0504a2d6fd Implemented PacketReader, renamed Packet{Reader,Writer}Factory in the 
protocol component to Protocol{Reader,Writer}Factory.
 2011-08-12 21:55:22 +02:00
akwizgran
2c387f80b1 Packet decrypter with unit tests. Decryption is complicated by the 
fact that the cipher wants to operate a block at a time even though
it's in CTR mode.
 2011-08-12 17:14:58 +02:00
akwizgran
68b4760dfa Use a constant for the tag size. 2011-08-12 14:26:56 +02:00
akwizgran
f0cf825ca9 Javadoc and unit test for SharedSecret. 2011-08-12 12:57:23 +02:00
akwizgran
e896b2d86d Unit tests for ConnectionRecogniserImpl. 2011-08-12 12:26:47 +02:00
akwizgran
a789f49a39 Separated tag encoding from PacketWriterImpl, since it's also needed 
by the code that recognises tags. Implemented ConnectionRecogniser
(untested).
 2011-08-11 19:55:22 +01:00
akwizgran
7545a1cc8f Moved Bytes to the main package. Added a SharedSecret class to parse 
encrypted secrets retrieved from the database.
 2011-08-11 19:14:20 +01:00
akwizgran
3edfa5d1ba Call the listeners when contacts are added and removed. 2011-08-11 15:55:30 +01:00
akwizgran
151a360587 Store shared secrets in the database (the crypto component will be 
responsible for wrapping/unwrapping them).
 2011-08-11 15:41:52 +01:00
akwizgran
07b34cfbab Added a lock for the connectionWindows table and exposed 
getConnectionWindow() and setConnectionWindow() through the
DatabaseComponent interface.
 2011-08-11 15:19:32 +01:00
akwizgran
0e6638bad6 Retrieve the set of unseen connection numbers from a connection 
window.
 2011-08-11 13:58:11 +01:00
akwizgran
ac4521152f Unit tests for ConnectionWindowImpl. 2011-08-11 13:37:18 +01:00
akwizgran
e0b86f1232 Moved ConnectionWindow into the transport module and implemented 
window sliding (untested).
 2011-08-11 13:22:23 +01:00
akwizgran
d5d03192e3 Basic connection window persistence. 2011-08-11 12:56:21 +01:00
akwizgran
f3f0c223c4 PacketWriter is implemented by two classes: PacketWriterImpl and 
PacketEncrypter. The separation allows authentication and encryption
to be tested separately.
 2011-08-09 17:50:54 +01:00
akwizgran
e9d0021f56 Added interfaces for reading and writing packets and recognising which 
contact originated an incoming connection, and an implementation of
the PacketWriter interface.
 2011-08-09 16:15:25 +01:00
akwizgran
c2045296eb Associate a timestamp with every subscription, indicating the earliest 
acceptable timestamp of subscribed messages. For a new subscription,
the timestamp is initialised to the current time, so a new subscriber
to a group will not immediately receive any messages. (Subscribing to
a group is therefore more like joining a mailing list than joining a
Usenet group - you only receive messages written after you joined.)

Once the database fills up and starts expiring messages, the
timestamps of subscriptions are updated so that contacts need not send
messages that would expire immediately. This is done using the
*approximate* timestamp of the oldest message in the database, to
avoid revealing the presence or absence of any particular message.
 2011-08-05 13:34:58 +01:00
akwizgran
5cb4075cfd Added the ability to store transport configuration details in the 
database - unlike transport properties, these are not shared with
contacts. For example, when using email as a transport, the address
for sending and receiving emails would be a transport property, while
the username and password for the email server would be transport
configuration details. Transport plugins can update their
configuration details atomically.

Also clarified the terminology for transport and subscription updates.
 2011-08-04 13:41:41 +01:00
akwizgran
ec29c4d1d3 Changed the format of transport properties from (key, value) pairs to 
(transport name, key, value) triples. This makes it possible for each
transport plugin to update its locally stored properties atomically.
 2011-08-04 11:07:28 +01:00
akwizgran
5be9d953ee Use fail() instead of assertTrue(false). 2011-08-03 21:19:04 +01:00
akwizgran
c6ded0227d Unit test for database exception handling. 2011-08-03 21:01:37 +01:00
akwizgran
c90a18278b Allow a maximum length to be specified when reading strings or byte 
arrays, check it before allocating the buffer, and always specify the
maximum length when reading untrusted data - otherwise
CountingConsumer will reject the packet, but not before we've tried to
allocate a buffer of the specified size (up to 2 GB).
 2011-08-03 19:29:30 +01:00
akwizgran
2740b2b002 s/transport details/transport properties/g 2011-08-02 13:08:44 +01:00
akwizgran
0e48f4ba55 Listeners for local transport updates. 2011-08-02 09:44:15 +01:00
akwizgran
ff0909a0e9 Listeners for subscription changes. 2011-08-02 09:22:54 +01:00
akwizgran
0d0885bf4b Don't throw a DbException if a contact sends duplicate batches. 2011-08-01 17:56:18 +01:00
akwizgran
02c4d9197c Added CounterModeTest to ant buildfile. 2011-08-01 14:36:19 +01:00
akwizgran
9586e0de9c Unit tests for CTR-mode encryption. 2011-08-01 14:01:17 +01:00
akwizgran
adee3e121c Added support for registering listeners with the database that are 
called when new messages are available, and a new method
hasSendableMessages(ContactId) that listeners can call to see whether
it's worth trying to create a batch.
 2011-07-27 20:27:43 +01:00
akwizgran
e93fbe0b20 Implemented subscription visibility. If a subscription is not visible 
to a contact, do not accept, offer, or send messages belonging to that
group to or from that contact, and do not list that group in
subscription updates sent to that contact.
 2011-07-27 16:43:19 +01:00
akwizgran
4311b1a224 Added RequestReaderTest to ant buildfile. 2011-07-27 11:08:17 +01:00
akwizgran
b161e5ed1d Request reader and unit test. 2011-07-27 11:06:54 +01:00
akwizgran
0933092295 Added RequestWriterImplTest to ant buildfile. 2011-07-26 22:02:51 +01:00
akwizgran
0cf8477504 Read and write offers. Mostly boilerplate. 2011-07-26 22:00:39 +01:00
akwizgran
9e78837055 Implemented OfferWriter and RequestWriter, made all the writers 
reusable (though not thread-safe), and guiced the readers.
 2011-07-26 21:36:55 +01:00
akwizgran
426e415676 OK, I think that's enough unit tests for one day. 2011-07-26 18:37:58 +01:00
akwizgran
1e60be4b75 Unit tests for DatabaseComponent. 2011-07-26 18:25:14 +01:00
akwizgran
8ba5b46d59 More unit tests for DatabaseComponent. 2011-07-26 18:11:57 +01:00
akwizgran
bcf8bcbd04 More unit tests. 2011-07-26 17:48:47 +01:00
akwizgran
bc1622b1fa Unit tests and a bugfix. THE SYSTEM WORKS! 2011-07-26 17:24:26 +01:00