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server_tls_test.go
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server_tls_test.go
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package quic
import (
"bytes"
"io"
"github.com/bifurcation/mint"
"github.com/lucas-clemente/quic-go/internal/crypto"
"github.com/lucas-clemente/quic-go/internal/handshake"
"github.com/lucas-clemente/quic-go/internal/mocks"
"github.com/lucas-clemente/quic-go/internal/mocks/handshake"
"github.com/lucas-clemente/quic-go/internal/protocol"
"github.com/lucas-clemente/quic-go/internal/testdata"
"github.com/lucas-clemente/quic-go/internal/utils"
"github.com/lucas-clemente/quic-go/internal/wire"
"github.com/lucas-clemente/quic-go/qerr"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
var _ = Describe("Stateless TLS handling", func() {
var (
conn *mockPacketConn
server *serverTLS
sessionChan <-chan tlsSession
mintTLS *mockhandshake.MockMintTLS
extHandler *mocks.MockTLSExtensionHandler
mintReply io.Writer
)
BeforeEach(func() {
mintTLS = mockhandshake.NewMockMintTLS(mockCtrl)
extHandler = mocks.NewMockTLSExtensionHandler(mockCtrl)
conn = newMockPacketConn()
config := &Config{
Versions: []protocol.VersionNumber{protocol.VersionTLS},
}
var err error
server, sessionChan, err = newServerTLS(conn, config, nil, nil, testdata.GetTLSConfig(), utils.DefaultLogger)
Expect(err).ToNot(HaveOccurred())
server.newMintConn = func(bc *handshake.CryptoStreamConn, v protocol.VersionNumber) (handshake.MintTLS, <-chan handshake.TransportParameters, error) {
mintReply = bc
return mintTLS, extHandler.GetPeerParams(), nil
}
})
getPacket := func(f wire.Frame) (*wire.Header, []byte) {
hdrBuf := &bytes.Buffer{}
hdr := &wire.Header{
IsLongHeader: true,
DestConnectionID: protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8},
SrcConnectionID: protocol.ConnectionID{8, 7, 6, 5, 4, 3, 2, 1},
PacketNumber: 1,
PacketNumberLen: protocol.PacketNumberLen1,
Version: protocol.VersionTLS,
}
err := hdr.Write(hdrBuf, protocol.PerspectiveClient, protocol.VersionTLS)
Expect(err).ToNot(HaveOccurred())
hdr.Raw = hdrBuf.Bytes()
aead, err := crypto.NewNullAEAD(protocol.PerspectiveClient, hdr.DestConnectionID, protocol.VersionTLS)
Expect(err).ToNot(HaveOccurred())
buf := &bytes.Buffer{}
err = f.Write(buf, protocol.VersionTLS)
Expect(err).ToNot(HaveOccurred())
// pad the packet such that is has exactly the required minimum size
buf.Write(bytes.Repeat([]byte{0}, protocol.MinInitialPacketSize-len(hdr.Raw)-aead.Overhead()-buf.Len()))
data := aead.Seal(nil, buf.Bytes(), 1, hdr.Raw)
Expect(len(hdr.Raw) + len(data)).To(Equal(protocol.MinInitialPacketSize))
return hdr, data
}
unpackPacket := func(data []byte) (*wire.Header, []byte) {
r := bytes.NewReader(conn.dataWritten.Bytes())
hdr, err := wire.ParseHeaderSentByServer(r)
Expect(err).ToNot(HaveOccurred())
hdr.Raw = data[:len(data)-r.Len()]
aead, err := crypto.NewNullAEAD(protocol.PerspectiveClient, hdr.SrcConnectionID, protocol.VersionTLS)
Expect(err).ToNot(HaveOccurred())
payload, err := aead.Open(nil, data[len(data)-r.Len():], hdr.PacketNumber, hdr.Raw)
Expect(err).ToNot(HaveOccurred())
return hdr, payload
}
It("sends a version negotiation packet if it doesn't support the version", func() {
hdr := &wire.Header{
DestConnectionID: protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8},
SrcConnectionID: protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8},
PacketNumberLen: protocol.PacketNumberLen1,
Version: 0x1337,
}
server.HandleInitial(nil, hdr, bytes.Repeat([]byte{0}, protocol.MinInitialPacketSize))
Expect(conn.dataWritten.Len()).ToNot(BeZero())
hdr, err := wire.ParseHeaderSentByServer(bytes.NewReader(conn.dataWritten.Bytes()))
Expect(err).ToNot(HaveOccurred())
Expect(hdr.IsVersionNegotiation).To(BeTrue())
Expect(sessionChan).ToNot(Receive())
})
It("drops too small packets", func() {
hdr, data := getPacket(&wire.StreamFrame{Data: []byte("Client Hello")})
data = data[:len(data)-1] // the packet is now 1 byte too small
server.HandleInitial(nil, hdr, data)
Expect(conn.dataWritten.Len()).To(BeZero())
})
It("ignores packets with invalid contents", func() {
hdr, data := getPacket(&wire.StreamFrame{StreamID: 10, Offset: 11, Data: []byte("foobar")})
server.HandleInitial(nil, hdr, data)
Expect(conn.dataWritten.Len()).To(BeZero())
Expect(sessionChan).ToNot(Receive())
})
It("replies with a Retry packet, if a Cookie is required", func() {
extHandler.EXPECT().GetPeerParams()
mintTLS.EXPECT().Handshake().Return(mint.AlertStatelessRetry).Do(func() {
mintReply.Write([]byte("Retry with this Cookie"))
})
hdr, data := getPacket(&wire.StreamFrame{Data: []byte("Client Hello")})
server.HandleInitial(nil, hdr, data)
Expect(conn.dataWritten.Len()).ToNot(BeZero())
r := bytes.NewReader(conn.dataWritten.Bytes())
replyHdr, err := wire.ParseHeaderSentByServer(r)
Expect(err).ToNot(HaveOccurred())
Expect(replyHdr.Type).To(Equal(protocol.PacketTypeRetry))
Expect(replyHdr.SrcConnectionID).To(Equal(hdr.DestConnectionID))
Expect(replyHdr.DestConnectionID).To(Equal(hdr.SrcConnectionID))
Expect(replyHdr.PayloadLen).To(BeEquivalentTo(r.Len()))
Expect(sessionChan).ToNot(Receive())
})
It("replies with a Handshake packet and creates a session, if no Cookie is required", func() {
mintTLS.EXPECT().Handshake().Return(mint.AlertNoAlert).Do(func() {
mintReply.Write([]byte("Server Hello"))
})
mintTLS.EXPECT().Handshake().Return(mint.AlertNoAlert)
mintTLS.EXPECT().State().Return(mint.StateServerNegotiated)
mintTLS.EXPECT().State().Return(mint.StateServerWaitFlight2)
paramsChan := make(chan handshake.TransportParameters, 1)
paramsChan <- handshake.TransportParameters{}
extHandler.EXPECT().GetPeerParams().Return(paramsChan)
hdr, data := getPacket(&wire.StreamFrame{Data: []byte("Client Hello")})
done := make(chan struct{})
go func() {
defer GinkgoRecover()
server.HandleInitial(nil, hdr, data)
// the Handshake packet is written by the session
Expect(conn.dataWritten.Len()).To(BeZero())
close(done)
}()
var tlsSess tlsSession
Eventually(sessionChan).Should(Receive(&tlsSess))
// make sure we're using a server-generated connection ID
Expect(tlsSess.connID).ToNot(Equal(hdr.SrcConnectionID))
Expect(tlsSess.connID).ToNot(Equal(hdr.DestConnectionID))
Eventually(done).Should(BeClosed())
})
It("sends a CONNECTION_CLOSE, if mint returns an error", func() {
mintTLS.EXPECT().Handshake().Return(mint.AlertAccessDenied)
extHandler.EXPECT().GetPeerParams()
hdr, data := getPacket(&wire.StreamFrame{Data: []byte("Client Hello")})
server.HandleInitial(nil, hdr, data)
// the Handshake packet is written by the session
Expect(conn.dataWritten.Bytes()).ToNot(BeEmpty())
// unpack the packet to check that it actually contains a CONNECTION_CLOSE
replyHdr, data := unpackPacket(conn.dataWritten.Bytes())
Expect(replyHdr.Type).To(Equal(protocol.PacketTypeHandshake))
Expect(replyHdr.SrcConnectionID).To(Equal(hdr.DestConnectionID))
Expect(replyHdr.DestConnectionID).To(Equal(hdr.SrcConnectionID))
frame, err := wire.ParseNextFrame(bytes.NewReader(data), nil, protocol.VersionTLS)
Expect(err).ToNot(HaveOccurred())
Expect(frame).To(BeAssignableToTypeOf(&wire.ConnectionCloseFrame{}))
ccf := frame.(*wire.ConnectionCloseFrame)
Expect(ccf.ErrorCode).To(Equal(qerr.HandshakeFailed))
Expect(ccf.ReasonPhrase).To(Equal(mint.AlertAccessDenied.String()))
})
})