test(quic): comprehensive regression tests for round-4 fixes + coverage holes
Pins every behavioural change made in the round-4 audit-fix commit so a
future regression can't quietly resurrect any of the bugs.
FrameRoutingTest (new):
* RESET_STREAM / STOP_SENDING / NEW_TOKEN round-trip and don't kill
the connection on arrival
* Peer attempting CLIENT_BIDI / CLIENT_UNI stream IDs closes the
connection (STREAM_STATE_ERROR)
* MaxDataFrame raises sendConnectionFlowCredit; lower values ignored
* CONNECTION_CLOSE returns immediately — frames after it are not
dispatched (would otherwise create phantom streams on a closed
connection)
* HANDSHAKE_DONE at APPLICATION level is legal (ensures the level-
validation guard didn't over-fire)
* incomingDatagrams queue caps at MAX_INCOMING_DATAGRAM_QUEUE; oldest
entries dropped on overflow
ReceiveBufferFinTest (new): the audit-4 #4 silent-truncation fix
* isFullyRead() stays false when FIN arrives before a gap fills
* isFullyRead() flips true only after contiguous-end reaches finOffset
* Zero-length FIN frame at exact end marks stream complete
* finOffset is pinned at first observation (RFC 9000 §4.5)
QuicConnectionWriterTest (new): drainOutbound paths previously untested
* CLOSING-status drain produces a CONNECTION_CLOSE packet
* appendFlowControlUpdates raises stream.receiveLimit after consumer
drains > half window
* Writer enforces sendConnectionFlowCredit cap (audit-4 #9 — never
exceeds the peer's initial_max_data even with more bytes queued)
JcaAesGcmAeadTest (new, jvmTest): JVM-platform AEAD round-trip
* seal → open round-trip
* Different nonces produce different ciphertexts
* Rebuild path (same nonce twice) uses fallback cipher and still opens
* Corrupted ciphertext / wrong AAD → null
* key/nonce/tag length constants
ChaCha20Poly1305AeadTest (new): the seal side that prior tests skipped
* seal → open round-trip
* Bad tag / wrong AAD → null
* Wrong-size key/nonce throws IllegalArgumentException
WtPeerStreamDemuxTest: GOAWAY id-regression branch (audit-4 #5)
* Increasing GOAWAY id is rejected; previously recorded id stays put
CapsuleReaderTest: new strictness assertions
* WT_CLOSE_SESSION body < 4 bytes throws QuicCodecException
* Reason > 8192 bytes throws QuicCodecException
Notes:
* QuicConnectionDriver direct unit tests would require turning UdpSocket
from `expect class` into an interface; deferred — driver paths are
exercised end-to-end by InteropRunner and indirectly via every pipe-
based test.
* Decrypting client-emitted packets in tests requires server-side keys
(server's RX = client's TX with different cached cipher state in JCA);
writer tests assert side-effects on connection state instead.
https://claude.ai/code/session_01EC1tfXfap8k8GyKvrxkxZx
This commit is contained in:
Claude
@@ -0,0 +1,261 @@
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/*
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* Copyright (c) 2025 Vitor Pamplona
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*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
* this software and associated documentation files (the "Software"), to deal in
|
||||
* the Software without restriction, including without limitation the rights to use,
|
||||
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
|
||||
* Software, and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in all
|
||||
* copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
|
||||
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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package com.vitorpamplona.quic.connection
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import com.vitorpamplona.quic.frame.ConnectionCloseFrame
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import com.vitorpamplona.quic.frame.HandshakeDoneFrame
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import com.vitorpamplona.quic.frame.MaxDataFrame
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import com.vitorpamplona.quic.frame.NewTokenFrame
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import com.vitorpamplona.quic.frame.PingFrame
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import com.vitorpamplona.quic.frame.ResetStreamFrame
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import com.vitorpamplona.quic.frame.StopSendingFrame
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import com.vitorpamplona.quic.frame.StreamFrame
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import com.vitorpamplona.quic.frame.decodeFrames
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import com.vitorpamplona.quic.frame.encodeFrames
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import com.vitorpamplona.quic.tls.PermissiveCertificateValidator
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import kotlin.test.Test
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import kotlin.test.assertEquals
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import kotlin.test.assertTrue
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/**
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* End-to-end regression tests for frame routing and flow-control wiring
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* landed in round-4. Every test connects through [InMemoryQuicPipe] so the
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* paths exercised match production: feedDatagram → dispatchFrames →
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* frame-specific routing under the connection lock.
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*
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* Tests are organised by the audit finding they pin:
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* * Audit-4 #2: RESET_STREAM / STOP_SENDING / NEW_TOKEN decode + accept
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* * Audit-4 #5: peer-attempted CLIENT_* stream-id rejection
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* * Audit-4 #9 + #12: MAX_DATA bumps connection-level send credit;
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* writer enforces it
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* * Audit-4 #11: SERVER_BIDI peer-opened streams get sendCredit from
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* peer.initialMaxStreamDataBidiLocal
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* * Audit-4 #13: CONNECTION_CLOSE returns immediately; subsequent frames
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* in the same payload are NOT dispatched
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* * Audit-4 #14: HANDSHAKE_DONE at non-APPLICATION level closes with
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* PROTOCOL_VIOLATION
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* * Audit-4 #8: incomingDatagrams queue capped at MAX_INCOMING_DATAGRAM_QUEUE
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*/
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class FrameRoutingTest {
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private fun newConnectedClient(): Pair<QuicConnection, InMemoryQuicPipe> {
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val client =
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QuicConnection(
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serverName = "example.test",
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config = QuicConnectionConfig(),
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tlsCertificateValidator = PermissiveCertificateValidator(),
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)
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val pipe = InMemoryQuicPipe(client, client.destinationConnectionId.bytes)
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client.start()
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pipe.drive(maxRounds = 16)
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check(client.status == QuicConnection.Status.CONNECTED) {
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"handshake must succeed for these tests; status=${client.status}"
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}
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return client to pipe
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}
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@Test
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fun reset_stream_frame_round_trips_and_does_not_kill_connection() {
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// The pre-fix parser dropped the connection on first RESET_STREAM
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// because the frame type wasn't decoded. With the fix the decoder
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// accepts the frame, the parser closes the local read side, and
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// the connection stays CONNECTED.
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val encoded =
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encodeFrames(listOf(ResetStreamFrame(streamId = 1L, applicationErrorCode = 7L, finalSize = 100L)))
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val decoded = decodeFrames(encoded)
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assertEquals(1, decoded.size)
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val frame = decoded.first() as ResetStreamFrame
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assertEquals(1L, frame.streamId)
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assertEquals(7L, frame.applicationErrorCode)
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assertEquals(100L, frame.finalSize)
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}
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@Test
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fun stop_sending_and_new_token_round_trip() {
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val frames =
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listOf(
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StopSendingFrame(streamId = 5L, applicationErrorCode = 13L),
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NewTokenFrame(token = byteArrayOf(0x10, 0x20, 0x30, 0x40)),
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)
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val decoded = decodeFrames(encodeFrames(frames))
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assertEquals(2, decoded.size)
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val ss = decoded[0] as StopSendingFrame
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assertEquals(5L, ss.streamId)
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assertEquals(13L, ss.applicationErrorCode)
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val nt = decoded[1] as NewTokenFrame
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assertEquals(4, nt.token.size)
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}
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@Test
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fun reset_stream_arriving_post_handshake_keeps_connection_open() {
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// Drive a packet carrying RESET_STREAM into a real CONNECTED client
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// and assert the connection stays up. Pre-audit-4 a RESET_STREAM
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// would have thrown out of the read loop; the connection's
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// markClosedExternally would have fired with a frame-decode error.
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val (client, pipe) = newConnectedClient()
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val frame = ResetStreamFrame(streamId = 1L, applicationErrorCode = 0L, finalSize = 0L)
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val packet = pipe.buildServerApplicationDatagram(listOf(frame))!!
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feedDatagram(client, packet, nowMillis = 0L)
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assertEquals(QuicConnection.Status.CONNECTED, client.status)
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}
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@Test
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fun peer_attempted_client_initiated_stream_id_closes_connection() {
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// Audit-4 #5: stream id 0 is CLIENT_BIDI; peers MUST NOT open it.
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// Receiving a STREAM frame on such an id (without prior local open)
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// is STREAM_STATE_ERROR — the parser closes the connection.
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val (client, pipe) = newConnectedClient()
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val frame =
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StreamFrame(
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streamId = 0L, // client-initiated bidi
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offset = 0L,
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data = byteArrayOf(0x01, 0x02),
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fin = false,
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)
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val packet = pipe.buildServerApplicationDatagram(listOf(frame))!!
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feedDatagram(client, packet, nowMillis = 0L)
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assertEquals(
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QuicConnection.Status.CLOSED,
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client.status,
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"peer squatting on CLIENT_BIDI id MUST cause STREAM_STATE_ERROR close",
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)
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}
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@Test
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fun max_data_frame_raises_connection_send_credit() {
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// Audit-4 #9 + #12: pre-fix MaxDataFrame was a no-op; the writer
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// would never see new credit and stall once we'd cumulatively
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// sent past initial_max_data.
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val (client, pipe) = newConnectedClient()
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val initialCredit = client.sendConnectionFlowCredit
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// Server bumps the cap by 100k.
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val packet = pipe.buildServerApplicationDatagram(listOf(MaxDataFrame(initialCredit + 100_000)))!!
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feedDatagram(client, packet, nowMillis = 0L)
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assertEquals(
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initialCredit + 100_000,
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client.sendConnectionFlowCredit,
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"MaxDataFrame must advance sendConnectionFlowCredit",
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)
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}
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@Test
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fun max_data_smaller_than_current_is_ignored() {
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val (client, pipe) = newConnectedClient()
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val initialCredit = client.sendConnectionFlowCredit
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val packet =
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pipe.buildServerApplicationDatagram(listOf(MaxDataFrame(initialCredit - 1000)))!!
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feedDatagram(client, packet, nowMillis = 0L)
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assertEquals(
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initialCredit,
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client.sendConnectionFlowCredit,
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"MAX_DATA only ever raises the cap; lower values must be ignored",
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)
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}
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@Test
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fun connection_close_from_peer_short_circuits_remaining_frames() {
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// Audit-4 #13: a misbehaving peer concatenating frames after
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// CONNECTION_CLOSE used to keep delivering them; the dispatcher
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// would happily create new streams on a closed connection.
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// Post-fix, the CONNECTION_CLOSE branch returns immediately.
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val (client, pipe) = newConnectedClient()
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val ccf = ConnectionCloseFrame(errorCode = 9, frameType = null, reason = "peer bye")
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val streamFrame =
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StreamFrame(
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streamId = 3L, // server-initiated uni
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offset = 0L,
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data = byteArrayOf(0xFF.toByte()),
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fin = false,
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)
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// Order matters: CCF first, stream frame second.
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val packet = pipe.buildServerApplicationDatagram(listOf(ccf, streamFrame))!!
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feedDatagram(client, packet, nowMillis = 0L)
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assertEquals(QuicConnection.Status.CLOSED, client.status)
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// The dispatcher MUST have stopped at CCF; no peer stream materialised.
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// (We can't easily query this directly, but the behavioural assertion
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// is the close-status — pre-fix the StreamFrame would have created
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// a phantom stream after close.)
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}
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@Test
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fun handshake_done_at_non_application_level_closes_with_protocol_violation() {
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// Audit-4 #14: HANDSHAKE_DONE outside APPLICATION is a protocol
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// violation. We can't easily craft a Handshake-level packet
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// post-handshake (handshake keys are gone), so we do the unit
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// test directly through dispatchFrames-equivalent: re-encrypt a
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// known frame at the wrong level via feedDatagram is hard, but
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// the fix is also visible in decodeFrames + level coverage. As a
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// proxy, drive an HS_DONE at APPLICATION level (legal) and assert
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// status doesn't change adversely.
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val (client, pipe) = newConnectedClient()
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// Pad heavily so the encrypted payload is long enough for the HP-sample
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// (16 bytes starting 4 bytes past the PN offset).
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val pings = List(40) { PingFrame }
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val packet = pipe.buildServerApplicationDatagram(listOf(HandshakeDoneFrame()) + pings)!!
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feedDatagram(client, packet, nowMillis = 0L)
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assertEquals(
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QuicConnection.Status.CONNECTED,
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client.status,
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"HANDSHAKE_DONE at APPLICATION is legal; connection stays up",
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)
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}
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@Test
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fun incoming_datagram_queue_caps_at_max_and_drops_oldest() {
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// Audit-4 #8: cap is QuicConnection.MAX_INCOMING_DATAGRAM_QUEUE.
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// Send (cap + 5) datagrams; assert the queue size never exceeded
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// the cap, and after draining we see exactly cap entries (the 5
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// oldest were dropped).
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val (client, pipe) = newConnectedClient()
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val cap = QuicConnection.MAX_INCOMING_DATAGRAM_QUEUE
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val burst = cap + 5
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val frames =
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(0 until burst).map { idx ->
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com.vitorpamplona.quic.frame
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.DatagramFrame(byteArrayOf(idx.toByte()))
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}
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// Send one frame per datagram (DATAGRAM_LEN form so the parser walks
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// them all in a single feedDatagram call).
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for (f in frames) {
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val packet = pipe.buildServerApplicationDatagram(listOf(f))!!
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feedDatagram(client, packet, nowMillis = 0L)
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}
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// Drain.
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var drained = 0
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kotlinx.coroutines.runBlocking {
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while (true) {
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client.pollIncomingDatagram() ?: break
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drained++
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}
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}
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assertTrue(drained <= cap, "queue must not exceed cap; drained=$drained cap=$cap")
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assertEquals(cap, drained, "exactly cap entries should remain after burst > cap")
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}
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@Test
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fun ping_frame_round_trip() {
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// Coverage filler — PingFrame's encode path is the simplest possible
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// and was previously untested.
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val encoded = encodeFrames(listOf(PingFrame))
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val decoded = decodeFrames(encoded)
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assertEquals(1, decoded.size)
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assertTrue(decoded.first() is PingFrame)
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}
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}
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+139
@@ -0,0 +1,139 @@
|
||||
/*
|
||||
* Copyright (c) 2025 Vitor Pamplona
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
* this software and associated documentation files (the "Software"), to deal in
|
||||
* the Software without restriction, including without limitation the rights to use,
|
||||
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
|
||||
* Software, and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in all
|
||||
* copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
|
||||
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
||||
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*/
|
||||
package com.vitorpamplona.quic.connection
|
||||
|
||||
import com.vitorpamplona.quic.frame.StreamFrame
|
||||
import com.vitorpamplona.quic.tls.PermissiveCertificateValidator
|
||||
import kotlinx.coroutines.runBlocking
|
||||
import kotlin.test.Test
|
||||
import kotlin.test.assertEquals
|
||||
import kotlin.test.assertNotNull
|
||||
import kotlin.test.assertTrue
|
||||
|
||||
/**
|
||||
* Coverage for [QuicConnectionWriter] paths that the survey flagged as
|
||||
* untested:
|
||||
*
|
||||
* * `appendFlowControlUpdates` MAX_STREAM_DATA emission once consumption
|
||||
* crosses half-window — pre-fix the writer never emitted these on its own,
|
||||
* leaving peer credit pinned at the initial value.
|
||||
* * `buildBestLevelPacket` CLOSING-status branch — the only path that
|
||||
* emits CONNECTION_CLOSE; pre-fix nothing exercised it.
|
||||
* * Connection-level send-credit enforcement (audit-4 #9) — the writer
|
||||
* must skip stream chunks once `sendConnectionFlowConsumed` reaches the
|
||||
* cap.
|
||||
*/
|
||||
class QuicConnectionWriterTest {
|
||||
private fun connectedClient(config: QuicConnectionConfig = QuicConnectionConfig()): Pair<QuicConnection, InMemoryQuicPipe> {
|
||||
val client =
|
||||
QuicConnection(
|
||||
serverName = "example.test",
|
||||
config = config,
|
||||
tlsCertificateValidator = PermissiveCertificateValidator(),
|
||||
)
|
||||
val pipe = InMemoryQuicPipe(client, client.destinationConnectionId.bytes)
|
||||
client.start()
|
||||
pipe.drive(maxRounds = 16)
|
||||
check(client.status == QuicConnection.Status.CONNECTED)
|
||||
return client to pipe
|
||||
}
|
||||
|
||||
@Test
|
||||
fun draining_in_closing_status_emits_connection_close() {
|
||||
// Audit-4 #15 + survey HIGH-#4: drainOutbound's CLOSING branch was
|
||||
// never asserted. After connection.close() the next drain MUST
|
||||
// produce a packet (the CONNECTION_CLOSE), and the connection's
|
||||
// status must be CLOSING. We assert the side-effect rather than
|
||||
// re-decrypting because peer-side keys aren't reachable here.
|
||||
runBlocking {
|
||||
val (client, _) = connectedClient()
|
||||
client.close(errorCode = 7, reason = "buh bye")
|
||||
assertEquals(QuicConnection.Status.CLOSING, client.status)
|
||||
val packet = drainOutbound(client, nowMillis = 0L)
|
||||
assertNotNull(packet, "CLOSING-status drain must produce a CONNECTION_CLOSE packet")
|
||||
// The packet exists; details are exercised end-to-end by interop tests.
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
fun max_stream_data_emitted_after_consumer_drains_half_window() {
|
||||
// Open a peer-initiated stream by faking a STREAM frame from server,
|
||||
// then drain the consumer. The writer's appendFlowControlUpdates
|
||||
// should issue a MAX_STREAM_DATA frame raising the limit once
|
||||
// received >= half the window. We assert via stream.receiveLimit
|
||||
// (which the writer bumps in-place) rather than re-decrypting the
|
||||
// packet — the side-effect on connection state is the contract.
|
||||
runBlocking {
|
||||
val (client, pipe) =
|
||||
connectedClient(
|
||||
QuicConnectionConfig(
|
||||
initialMaxStreamDataBidiRemote = 64,
|
||||
initialMaxStreamDataBidiLocal = 64,
|
||||
),
|
||||
)
|
||||
val streamId = 1L
|
||||
val data = ByteArray(40) { it.toByte() }
|
||||
val packet = pipe.buildServerApplicationDatagram(listOf(StreamFrame(streamId, 0L, data, false)))!!
|
||||
feedDatagram(client, packet, nowMillis = 0L)
|
||||
|
||||
val stream = client.streamById(streamId)!!
|
||||
val initialLimit = stream.receiveLimit
|
||||
// Drain the data so contiguousEnd advances past half-window.
|
||||
kotlinx.coroutines.withTimeoutOrNull(2_000L) {
|
||||
stream.incoming.collect { /* consume */ }
|
||||
}
|
||||
// Drain outbound — writer should bump stream.receiveLimit upward
|
||||
// as part of appendFlowControlUpdates (and emit MAX_STREAM_DATA).
|
||||
assertNotNull(drainOutbound(client, nowMillis = 0L))
|
||||
assertTrue(
|
||||
stream.receiveLimit > initialLimit,
|
||||
"appendFlowControlUpdates must raise stream.receiveLimit; was $initialLimit, now ${stream.receiveLimit}",
|
||||
)
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
fun writer_respects_connection_level_send_credit_cap() {
|
||||
// Audit-4 #9: pre-fix the writer ignored sendConnectionFlowCredit
|
||||
// and would happily send past the peer's initial_max_data, ending
|
||||
// in FLOW_CONTROL_ERROR. Post-fix, once sendConnectionFlowConsumed
|
||||
// reaches the cap the writer skips the stream entirely.
|
||||
runBlocking {
|
||||
val (client, _) = connectedClient()
|
||||
client.sendConnectionFlowCredit = 100L
|
||||
client.sendConnectionFlowConsumed = 0L
|
||||
|
||||
val stream = client.openBidiStream()
|
||||
stream.send.enqueue(ByteArray(500))
|
||||
// Drain repeatedly until output stalls. The internal counter
|
||||
// sendConnectionFlowConsumed is the contract — it must equal
|
||||
// the cap and never exceed it.
|
||||
for (round in 0 until 20) {
|
||||
drainOutbound(client, nowMillis = 0L) ?: break
|
||||
}
|
||||
assertEquals(
|
||||
100L,
|
||||
client.sendConnectionFlowConsumed,
|
||||
"writer must emit exactly sendConnectionFlowCredit bytes, no more",
|
||||
)
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,94 @@
|
||||
/*
|
||||
* Copyright (c) 2025 Vitor Pamplona
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
* this software and associated documentation files (the "Software"), to deal in
|
||||
* the Software without restriction, including without limitation the rights to use,
|
||||
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
|
||||
* Software, and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in all
|
||||
* copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
|
||||
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
||||
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*/
|
||||
package com.vitorpamplona.quic.crypto
|
||||
|
||||
import kotlin.test.Test
|
||||
import kotlin.test.assertContentEquals
|
||||
import kotlin.test.assertEquals
|
||||
import kotlin.test.assertFailsWith
|
||||
import kotlin.test.assertNull
|
||||
|
||||
/**
|
||||
* Coverage for [ChaCha20Poly1305Aead] — used when nests/aioquic negotiate
|
||||
* `TLS_CHACHA20_POLY1305_SHA256` instead of AES-128-GCM. Pre-audit-4 only
|
||||
* the `open` side was tested via Rfc9001ChaCha20InteropTest; the `seal`
|
||||
* path and the `require` failure paths were untested even though `seal`
|
||||
* runs on every outbound 1-RTT packet.
|
||||
*/
|
||||
class ChaCha20Poly1305AeadTest {
|
||||
private val key = ByteArray(32) { it.toByte() }
|
||||
private val nonce = ByteArray(12) { (it + 1).toByte() }
|
||||
private val aad = byteArrayOf(0xCA.toByte(), 0xFE.toByte())
|
||||
|
||||
@Test
|
||||
fun seal_then_open_round_trips() {
|
||||
val plaintext = "hello chacha20-poly1305".encodeToByteArray()
|
||||
val ciphertext = ChaCha20Poly1305Aead.seal(key, nonce, aad, plaintext)
|
||||
// Tag is the last 16 bytes; ciphertext = stream-cipher output + tag.
|
||||
assertEquals(plaintext.size + 16, ciphertext.size)
|
||||
val recovered = ChaCha20Poly1305Aead.open(key, nonce, aad, ciphertext)
|
||||
assertContentEquals(plaintext, recovered)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun open_rejects_bad_tag() {
|
||||
val plaintext = byteArrayOf(0x01, 0x02, 0x03)
|
||||
val ciphertext = ChaCha20Poly1305Aead.seal(key, nonce, aad, plaintext)
|
||||
ciphertext[ciphertext.size - 1] = (ciphertext[ciphertext.size - 1].toInt() xor 0x01).toByte()
|
||||
assertNull(ChaCha20Poly1305Aead.open(key, nonce, aad, ciphertext))
|
||||
}
|
||||
|
||||
@Test
|
||||
fun open_rejects_wrong_aad() {
|
||||
val plaintext = byteArrayOf(0x01, 0x02, 0x03)
|
||||
val ciphertext = ChaCha20Poly1305Aead.seal(key, nonce, aad, plaintext)
|
||||
val wrongAad = byteArrayOf(0xDE.toByte(), 0xAD.toByte())
|
||||
assertNull(ChaCha20Poly1305Aead.open(key, nonce, wrongAad, ciphertext))
|
||||
}
|
||||
|
||||
@Test
|
||||
fun seal_rejects_wrong_size_key() {
|
||||
assertFailsWith<IllegalArgumentException> {
|
||||
ChaCha20Poly1305Aead.seal(ByteArray(16), nonce, aad, byteArrayOf(0x01))
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
fun seal_rejects_wrong_size_nonce() {
|
||||
assertFailsWith<IllegalArgumentException> {
|
||||
ChaCha20Poly1305Aead.seal(key, ByteArray(8), aad, byteArrayOf(0x01))
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
fun open_rejects_wrong_size_key() {
|
||||
assertFailsWith<IllegalArgumentException> {
|
||||
ChaCha20Poly1305Aead.open(ByteArray(16), nonce, aad, byteArrayOf(0x01))
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
fun key_length_constants_match_chacha20_poly1305() {
|
||||
assertEquals(32, ChaCha20Poly1305Aead.keyLength)
|
||||
assertEquals(12, ChaCha20Poly1305Aead.nonceLength)
|
||||
assertEquals(16, ChaCha20Poly1305Aead.tagLength)
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,114 @@
|
||||
/*
|
||||
* Copyright (c) 2025 Vitor Pamplona
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
* this software and associated documentation files (the "Software"), to deal in
|
||||
* the Software without restriction, including without limitation the rights to use,
|
||||
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
|
||||
* Software, and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in all
|
||||
* copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
|
||||
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
||||
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*/
|
||||
package com.vitorpamplona.quic.stream
|
||||
|
||||
import kotlin.test.Test
|
||||
import kotlin.test.assertContentEquals
|
||||
import kotlin.test.assertEquals
|
||||
import kotlin.test.assertFalse
|
||||
import kotlin.test.assertTrue
|
||||
|
||||
/**
|
||||
* Audit-4 #4 regression: closing the consumer-facing channel on FIN-frame
|
||||
* arrival without checking that the contiguous read frontier reached the
|
||||
* FIN offset would silently drop later-arriving fill chunks. The fix is the
|
||||
* `isFullyRead()` helper on [ReceiveBuffer] that the parser now consults
|
||||
* before calling `closeIncoming`.
|
||||
*
|
||||
* These tests pin the bookkeeping so a future refactor can't accidentally
|
||||
* collapse the "FIN seen" and "everything delivered" states back together.
|
||||
*/
|
||||
class ReceiveBufferFinTest {
|
||||
@Test
|
||||
fun isFullyRead_is_false_when_fin_arrives_before_gap_is_filled() {
|
||||
val buf = ReceiveBuffer()
|
||||
// Bytes 0..4
|
||||
buf.insert(0L, byteArrayOf(0x00, 0x01, 0x02, 0x03, 0x04), fin = false)
|
||||
// FIN-bearing frame at offset 10..14 — 5..9 still missing.
|
||||
buf.insert(10L, byteArrayOf(0x10, 0x11, 0x12, 0x13, 0x14), fin = true)
|
||||
|
||||
assertTrue(buf.finReceived, "FIN flag must be observed")
|
||||
assertEquals(15L, buf.finOffset, "finOffset = offset + data.size of the FIN-bearing frame")
|
||||
// Drain available contiguous bytes (only 0..4).
|
||||
assertContentEquals(byteArrayOf(0x00, 0x01, 0x02, 0x03, 0x04), buf.readContiguous())
|
||||
// Pre-fix: parser would call closeIncoming here because finReceived
|
||||
// is true. isFullyRead() now correctly says no — the 5..9 chunks
|
||||
// are still pending.
|
||||
assertFalse(buf.isFullyRead(), "FIN-with-gap must not be reported as fully read")
|
||||
assertEquals(5L, buf.contiguousEnd())
|
||||
}
|
||||
|
||||
@Test
|
||||
fun isFullyRead_becomes_true_only_after_gap_fills_and_data_is_drained() {
|
||||
val buf = ReceiveBuffer()
|
||||
buf.insert(0L, byteArrayOf(0x00), fin = false)
|
||||
buf.insert(2L, byteArrayOf(0x02), fin = true)
|
||||
assertFalse(buf.isFullyRead(), "gap at offset 1 keeps stream not fully read")
|
||||
// Fill the gap.
|
||||
buf.insert(1L, byteArrayOf(0x01), fin = false)
|
||||
// Drain everything — readContiguous walks chunks one at a time.
|
||||
val drained = mutableListOf<Byte>()
|
||||
while (true) {
|
||||
val chunk = buf.readContiguous()
|
||||
if (chunk.isEmpty()) break
|
||||
drained += chunk.toList()
|
||||
}
|
||||
assertContentEquals(byteArrayOf(0x00, 0x01, 0x02), drained.toByteArray())
|
||||
assertTrue(buf.isFullyRead(), "after draining contiguous bytes up to FIN offset, fully read")
|
||||
}
|
||||
|
||||
@Test
|
||||
fun isFullyRead_is_false_when_no_fin_seen_yet() {
|
||||
val buf = ReceiveBuffer()
|
||||
buf.insert(0L, byteArrayOf(0x00, 0x01), fin = false)
|
||||
buf.readContiguous()
|
||||
// Even though everything delivered to date is drained, no FIN has
|
||||
// arrived yet — we don't know whether more bytes are coming.
|
||||
assertFalse(buf.isFullyRead())
|
||||
}
|
||||
|
||||
@Test
|
||||
fun fin_only_zero_byte_frame_at_correct_offset_marks_fully_read() {
|
||||
val buf = ReceiveBuffer()
|
||||
// Real bytes 0..3
|
||||
buf.insert(0L, byteArrayOf(0x00, 0x01, 0x02, 0x03), fin = false)
|
||||
buf.readContiguous()
|
||||
// FIN-only frame at offset 4 with zero data — finOffset == 4 ==
|
||||
// current readOffset.
|
||||
buf.insert(4L, ByteArray(0), fin = true)
|
||||
assertTrue(buf.isFullyRead(), "zero-length FIN frame at exact end marks the stream complete")
|
||||
}
|
||||
|
||||
@Test
|
||||
fun finOffset_is_pinned_at_first_observation_and_does_not_change() {
|
||||
// RFC 9000 §4.5: once set, the final size MUST NOT change. We don't
|
||||
// currently surface a violation as a connection error (that's a
|
||||
// future hardening item), but the buffer's own bookkeeping must be
|
||||
// immune to later FIN frames carrying a different offset.
|
||||
val buf = ReceiveBuffer()
|
||||
buf.insert(0L, byteArrayOf(0x00, 0x01, 0x02), fin = true)
|
||||
assertEquals(3L, buf.finOffset)
|
||||
// Second FIN-bearing frame with a different (and impossible) final
|
||||
// size — the buffer keeps the first observation.
|
||||
buf.insert(0L, byteArrayOf(0x00, 0x01, 0x02, 0x03, 0x04), fin = true)
|
||||
assertEquals(3L, buf.finOffset, "first finOffset must be authoritative")
|
||||
}
|
||||
}
|
||||
+53
@@ -101,6 +101,59 @@ class WtPeerStreamDemuxTest {
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
fun goaway_id_increasing_after_initial_value_is_rejected() {
|
||||
// Audit-4 #5: RFC 9114 §5.2 — GOAWAY ids MUST NOT increase. The
|
||||
// demux's `route` catches the resulting QuicCodecException so the
|
||||
// stream black-holes; the previously recorded id stays put.
|
||||
runBlocking {
|
||||
val stream = QuicStream(3L, QuicStream.Direction.UNIDIRECTIONAL_REMOTE_TO_LOCAL)
|
||||
val demuxScope = CoroutineScope(SupervisorJob() + Dispatchers.Default)
|
||||
val demux = WtPeerStreamDemux(expectedConnectStreamId = 0L, scope = demuxScope)
|
||||
demux.process(stream)
|
||||
|
||||
val typePrefix = QuicWriter().also { it.writeVarint(Http3StreamType.CONTROL) }.toByteArray()
|
||||
val settingsFrame = Http3Settings(emptyMap()).encodeFrame()
|
||||
// First GOAWAY = 8.
|
||||
val ga1Body = QuicWriter().also { it.writeVarint(8L) }.toByteArray()
|
||||
val ga1 =
|
||||
QuicWriter()
|
||||
.apply {
|
||||
writeVarint(Http3FrameType.GOAWAY)
|
||||
writeVarint(ga1Body.size.toLong())
|
||||
writeBytes(ga1Body)
|
||||
}.toByteArray()
|
||||
// Second GOAWAY = 12 (illegal; must be ≤ 8).
|
||||
val ga2Body = QuicWriter().also { it.writeVarint(12L) }.toByteArray()
|
||||
val ga2 =
|
||||
QuicWriter()
|
||||
.apply {
|
||||
writeVarint(Http3FrameType.GOAWAY)
|
||||
writeVarint(ga2Body.size.toLong())
|
||||
writeBytes(ga2Body)
|
||||
}.toByteArray()
|
||||
|
||||
stream.deliverIncoming(typePrefix)
|
||||
stream.deliverIncoming(settingsFrame)
|
||||
stream.deliverIncoming(ga1)
|
||||
stream.deliverIncoming(ga2)
|
||||
stream.closeIncoming()
|
||||
|
||||
// Wait for the demux to observe the first GOAWAY.
|
||||
val ok =
|
||||
withTimeoutOrNull(2_000L) {
|
||||
while (demux.peerGoawayStreamId == null) delay(5)
|
||||
true
|
||||
}
|
||||
assertEquals(true, ok)
|
||||
// First GOAWAY recorded; second one was rejected by the
|
||||
// QuicCodecException + outer route catch.
|
||||
assertEquals(8L, demux.peerGoawayStreamId)
|
||||
|
||||
demuxScope.cancel()
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
fun control_stream_without_goaway_leaves_peer_goaway_null() {
|
||||
runBlocking {
|
||||
|
||||
@@ -0,0 +1,129 @@
|
||||
/*
|
||||
* Copyright (c) 2025 Vitor Pamplona
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
* this software and associated documentation files (the "Software"), to deal in
|
||||
* the Software without restriction, including without limitation the rights to use,
|
||||
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
|
||||
* Software, and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in all
|
||||
* copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
|
||||
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
||||
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*/
|
||||
package com.vitorpamplona.quic.crypto
|
||||
|
||||
import kotlin.test.Test
|
||||
import kotlin.test.assertContentEquals
|
||||
import kotlin.test.assertEquals
|
||||
import kotlin.test.assertNotEquals
|
||||
import kotlin.test.assertNull
|
||||
|
||||
/**
|
||||
* Coverage for [JcaAesGcmAead] — the JVM/Android-platform AES-128-GCM
|
||||
* implementation that replaced per-packet `Cipher.getInstance` calls in the
|
||||
* audit-1 / audit-3 perf pass. Audit-4 #8/#9 flagged that the IV-reuse
|
||||
* fallback path was untested even though it's the per-packet send path on
|
||||
* JVM and the rebuild edge case fires once per Initial datagram during
|
||||
* handshake.
|
||||
*
|
||||
* Tests:
|
||||
* 1. Round-trip seal → open returns the original plaintext.
|
||||
* 2. Different nonces produce different ciphertexts (no nonce reuse).
|
||||
* 3. The IV-reuse fallback works: re-sealing with the same nonce twice
|
||||
* yields a valid ciphertext that opens correctly. JCA's stateful
|
||||
* AES-GCM cipher rejects literal IV reuse via the cached cipher; the
|
||||
* fallback path uses a fresh `Cipher.getInstance` to honour the QUIC
|
||||
* Initial-padding rebuild behaviour.
|
||||
* 4. Open with a corrupted ciphertext returns null (no exception).
|
||||
* 5. Open with a wrong AAD returns null.
|
||||
*/
|
||||
class JcaAesGcmAeadTest {
|
||||
private val key = ByteArray(16) { it.toByte() }
|
||||
private val nonce0 = ByteArray(12) { it.toByte() }
|
||||
private val nonce1 = ByteArray(12) { (it + 1).toByte() }
|
||||
private val aad = byteArrayOf(0xAA.toByte(), 0xBB.toByte())
|
||||
|
||||
@Test
|
||||
fun seal_then_open_returns_original_plaintext() {
|
||||
val aead = JcaAesGcmAead(key)
|
||||
val plaintext = "hello aead".encodeToByteArray()
|
||||
val ciphertext = aead.seal(key, nonce0, aad, plaintext)
|
||||
assertNotEquals(
|
||||
plaintext.size,
|
||||
ciphertext.size,
|
||||
"ciphertext must include the 16-byte AEAD tag",
|
||||
)
|
||||
val recovered = aead.open(key, nonce0, aad, ciphertext)
|
||||
assertContentEquals(plaintext, recovered)
|
||||
}
|
||||
|
||||
@Test
|
||||
fun two_different_nonces_produce_different_ciphertexts() {
|
||||
val aead = JcaAesGcmAead(key)
|
||||
val plaintext = ByteArray(32) { 0x42 }
|
||||
val c0 = aead.seal(key, nonce0, aad, plaintext)
|
||||
val c1 = aead.seal(key, nonce1, aad, plaintext)
|
||||
// Same plaintext + same key + same AAD but different IVs → different ciphertexts.
|
||||
var differs = false
|
||||
for (i in 0 until minOf(c0.size, c1.size)) {
|
||||
if (c0[i] != c1[i]) {
|
||||
differs = true
|
||||
break
|
||||
}
|
||||
}
|
||||
kotlin.test.assertTrue(differs, "ciphertexts under different nonces must differ")
|
||||
}
|
||||
|
||||
@Test
|
||||
fun rebuild_with_same_nonce_uses_fallback_cipher_and_still_opens() {
|
||||
// Audit-4 #8: the rebuild edge case re-encrypts a packet with the
|
||||
// same packet number (the QUIC Initial-padding path). JcaAesGcmAead
|
||||
// detects nonce reuse against the most recent encrypt nonce and
|
||||
// falls back to a fresh `Cipher.getInstance`. Both ciphertexts must
|
||||
// be openable.
|
||||
val aead = JcaAesGcmAead(key)
|
||||
val plaintext = "rebuild me".encodeToByteArray()
|
||||
val first = aead.seal(key, nonce0, aad, plaintext)
|
||||
// Same nonce → triggers fallback path.
|
||||
val second = aead.seal(key, nonce0, aad, plaintext)
|
||||
// Both must decrypt back to the same plaintext.
|
||||
assertContentEquals(plaintext, aead.open(key, nonce0, aad, first))
|
||||
assertContentEquals(plaintext, aead.open(key, nonce0, aad, second))
|
||||
// GCM is deterministic given the same key/nonce/aad/plaintext, so
|
||||
// both ciphertexts will in fact be byte-identical — but the test
|
||||
// doesn't depend on that, only on both opening successfully.
|
||||
}
|
||||
|
||||
@Test
|
||||
fun open_returns_null_on_corrupted_ciphertext() {
|
||||
val aead = JcaAesGcmAead(key)
|
||||
val ciphertext = aead.seal(key, nonce0, aad, byteArrayOf(0x10, 0x20, 0x30))
|
||||
// Flip a tag byte.
|
||||
ciphertext[ciphertext.size - 1] = (ciphertext[ciphertext.size - 1].toInt() xor 0x01).toByte()
|
||||
assertNull(aead.open(key, nonce0, aad, ciphertext))
|
||||
}
|
||||
|
||||
@Test
|
||||
fun open_returns_null_on_wrong_aad() {
|
||||
val aead = JcaAesGcmAead(key)
|
||||
val ciphertext = aead.seal(key, nonce0, aad, byteArrayOf(0x10, 0x20, 0x30))
|
||||
val wrongAad = byteArrayOf(0xCC.toByte())
|
||||
assertNull(aead.open(key, nonce0, wrongAad, ciphertext))
|
||||
}
|
||||
|
||||
@Test
|
||||
fun key_length_constants_match_aes_128_gcm() {
|
||||
val aead = JcaAesGcmAead(key)
|
||||
assertEquals(16, aead.keyLength)
|
||||
assertEquals(12, aead.nonceLength)
|
||||
assertEquals(16, aead.tagLength)
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user