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package mint
import (
"bytes"
"crypto"
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"crypto/x509"
"crypto/x509/pkix"
"errors"
"fmt"
"io"
"math/big"
"net"
"sync"
"testing"
"time"
)
type pipeConn struct {
closed bool
r *bytes.Buffer
w *bytes.Buffer
rLock *sync.Mutex
wLock *sync.Mutex
}
func pipe() (client *pipeConn, server *pipeConn) {
client = new(pipeConn)
server = new(pipeConn)
c2s := bytes.NewBuffer(nil)
server.r = c2s
client.w = c2s
c2sLock := new(sync.Mutex)
server.rLock = c2sLock
client.wLock = c2sLock
s2c := bytes.NewBuffer(nil)
client.r = s2c
server.w = s2c
s2cLock := new(sync.Mutex)
client.rLock = s2cLock
server.wLock = s2cLock
return
}
func (p *pipeConn) Read(data []byte) (n int, err error) {
p.rLock.Lock()
defer p.rLock.Unlock()
if p.closed {
return 0, errors.New("closed")
}
n, err = p.r.Read(data)
// Suppress bytes.Buffer's EOF on an empty buffer
if err == io.EOF {
err = nil
}
return
}
func (p *pipeConn) Write(data []byte) (n int, err error) {
p.wLock.Lock()
defer p.wLock.Unlock()
if p.closed {
return 0, errors.New("closed")
}
return p.w.Write(data)
}
func (p *pipeConn) Close() error {
p.rLock.Lock()
p.wLock.Lock()
p.closed = true
p.wLock.Unlock()
p.rLock.Unlock()
return nil
}
func (p *pipeConn) LocalAddr() net.Addr { return nil }
func (p *pipeConn) RemoteAddr() net.Addr { return nil }
func (p *pipeConn) SetDeadline(t time.Time) error { return nil }
func (p *pipeConn) SetReadDeadline(t time.Time) error { return nil }
func (p *pipeConn) SetWriteDeadline(t time.Time) error { return nil }
func (p *pipeConn) Empty() bool { return p.r.Len() == 0 }
type bufferedConn struct {
autoflush bool
buffer bytes.Buffer
w net.Conn
writeCounter int
lostWrite map[int]bool
}
func (b *bufferedConn) Write(buf []byte) (int, error) {
ctr := b.writeCounter
b.writeCounter++
if b.lostWrite[ctr] {
return 0, nil
}
n, err := b.buffer.Write(buf)
if err != nil {
return 0, err
}
if n != len(buf) {
return n, fmt.Errorf("Incomplete write")
}
if b.autoflush {
err := b.Flush()
if err != nil {
return 0, err
}
}
return 0, nil
}
func (p *bufferedConn) Read(data []byte) (n int, err error) {
return p.w.Read(data)
}
func (p *bufferedConn) Close() error {
return nil
}
func (p *bufferedConn) LocalAddr() net.Addr { return nil }
func (p *bufferedConn) RemoteAddr() net.Addr { return nil }
func (p *bufferedConn) SetDeadline(t time.Time) error { return nil }
func (p *bufferedConn) SetReadDeadline(t time.Time) error { return nil }
func (p *bufferedConn) SetWriteDeadline(t time.Time) error { return nil }
func (b *bufferedConn) SetAutoflush() {
b.autoflush = true
}
func (b *bufferedConn) Empty() bool {
p := b.w.(*pipeConn)
return p.Empty()
}
func (b *bufferedConn) Flush() error {
buf := b.buffer.Bytes()
n, err := b.w.Write(buf)
if err != nil {
return err
}
if n != len(buf) {
return fmt.Errorf("Incomplete flush")
}
b.buffer.Reset()
return nil
}
func (b *bufferedConn) Lose(m int) {
b.lostWrite[m] = true
}
func (b *bufferedConn) Clear() {
b.buffer.Reset()
}
func newBufferedConn(p net.Conn) *bufferedConn {
return &bufferedConn{
autoflush: false,
buffer: bytes.Buffer{},
w: p,
lostWrite: make(map[int]bool, 0),
}
}
var (
serverKey, clientKey crypto.Signer
serverCert, clientCert *x509.Certificate
certificates, clientCertificates []*Certificate
clientName, serverName string
psk PreSharedKey
psks *PSKMapCache
basicConfig, dtlsConfig, nbConfig, nbDTLSConfig, hrrConfig, alpnConfig, pskConfig, pskDTLSConfig, pskECDHEConfig, pskDHEConfig, resumptionConfig, ffdhConfig, x25519Config *Config
)
func init() {
var err error
serverName = "example.com"
clientName = "example.org"
serverKey, serverCert, err = MakeNewSelfSignedCert(serverName, ECDSA_P256_SHA256)
if err != nil {
panic(err)
}
clientKey, clientCert, err = MakeNewSelfSignedCert(clientName, ECDSA_P256_SHA256)
if err != nil {
panic(err)
}
psk = PreSharedKey{
CipherSuite: TLS_AES_128_GCM_SHA256,
IsResumption: false,
Identity: []byte{0, 1, 2, 3},
Key: []byte{4, 5, 6, 7},
}
certificates = []*Certificate{
{
Chain: []*x509.Certificate{serverCert},
PrivateKey: serverKey,
},
}
clientCertificates = []*Certificate{
{
Chain: []*x509.Certificate{clientCert},
PrivateKey: clientKey,
},
}
psks = &PSKMapCache{
serverName: psk,
"00010203": psk,
}
basicConfig = &Config{
ServerName: serverName,
Certificates: certificates,
InsecureSkipVerify: true,
}
dtlsConfig = &Config{
ServerName: serverName,
Certificates: certificates,
UseDTLS: true,
InsecureSkipVerify: true,
}
nbConfig = &Config{
ServerName: serverName,
Certificates: certificates,
NonBlocking: true,
InsecureSkipVerify: true,
}
nbDTLSConfig = &Config{
ServerName: serverName,
Certificates: certificates,
NonBlocking: true,
UseDTLS: true,
InsecureSkipVerify: true,
}
hrrConfig = &Config{
ServerName: serverName,
Certificates: certificates,
RequireCookie: true,
InsecureSkipVerify: true,
}
alpnConfig = &Config{
ServerName: serverName,
Certificates: certificates,
NextProtos: []string{"http/1.1", "h2"},
InsecureSkipVerify: true,
}
pskConfig = &Config{
ServerName: serverName,
CipherSuites: []CipherSuite{TLS_AES_128_GCM_SHA256},
PSKs: psks,
AllowEarlyData: true,
InsecureSkipVerify: true,
}
pskDTLSConfig = &Config{
ServerName: serverName,
CipherSuites: []CipherSuite{TLS_AES_128_GCM_SHA256},
PSKs: psks,
AllowEarlyData: true,
UseDTLS: true,
NonBlocking: true,
InsecureSkipVerify: true,
}
pskECDHEConfig = &Config{
ServerName: serverName,
CipherSuites: []CipherSuite{TLS_AES_128_GCM_SHA256},
Certificates: certificates,
PSKs: psks,
InsecureSkipVerify: true,
}
pskDHEConfig = &Config{
ServerName: serverName,
CipherSuites: []CipherSuite{TLS_AES_128_GCM_SHA256},
Certificates: certificates,
PSKs: psks,
Groups: []NamedGroup{FFDHE2048},
InsecureSkipVerify: true,
}
resumptionConfig = &Config{
ServerName: serverName,
Certificates: certificates,
SendSessionTickets: true,
InsecureSkipVerify: true,
}
ffdhConfig = &Config{
ServerName: serverName,
Certificates: certificates,
CipherSuites: []CipherSuite{TLS_AES_128_GCM_SHA256},
Groups: []NamedGroup{FFDHE2048},
InsecureSkipVerify: true,
}
x25519Config = &Config{
ServerName: serverName,
Certificates: certificates,
CipherSuites: []CipherSuite{TLS_AES_128_GCM_SHA256},
Groups: []NamedGroup{X25519},
InsecureSkipVerify: true,
}
}
func assertKeySetEquals(t *testing.T, k1, k2 KeySet) {
t.Helper()
// Assume cipher is the same
assertTrue(t, len(k1.Keys) > 0, "assert that there are some keys")
assertEquals(t, len(k1.Keys), len(k2.Keys))
for k, v := range k1.Keys {
assertByteEquals(t, v, k2.Keys[k])
}
}
func computeExporter(t *testing.T, c *Conn, label string, context []byte, length int) []byte {
t.Helper()
res, err := c.ComputeExporter(label, context, length)
assertNotError(t, err, "Could not compute exporter")
return res
}
func checkConsistency(t *testing.T, client *Conn, server *Conn) {
assertDeepEquals(t, client.state.Params, server.state.Params)
assertCipherSuiteParamsEquals(t, client.state.cryptoParams, server.state.cryptoParams)
assertByteEquals(t, client.state.resumptionSecret, server.state.resumptionSecret)
assertByteEquals(t, client.state.clientTrafficSecret, server.state.clientTrafficSecret)
assertByteEquals(t, client.state.serverTrafficSecret, server.state.serverTrafficSecret)
assertByteEquals(t, client.state.exporterSecret, server.state.exporterSecret)
emptyContext := []byte{}
assertByteEquals(t, computeExporter(t, client, "E", emptyContext, 20), computeExporter(t, server, "E", emptyContext, 20))
assertNotByteEquals(t, computeExporter(t, client, "E", emptyContext, 20), computeExporter(t, server, "E", emptyContext, 21))
assertNotByteEquals(t, computeExporter(t, client, "E", emptyContext, 20), computeExporter(t, server, "F", emptyContext, 20))
assertByteEquals(t, computeExporter(t, client, "E", []byte{'A'}, 20), computeExporter(t, server, "E", []byte{'A'}, 20))
assertNotByteEquals(t, computeExporter(t, client, "E", []byte{'A'}, 20), computeExporter(t, server, "E", []byte{'B'}, 20))
}
func testConnInner(t *testing.T, name string, p testInstanceState) {
// Configs array:
configs := map[string]*Config{"basic config": basicConfig,
"HRR": hrrConfig,
"ALPN": alpnConfig,
"FFDH": ffdhConfig,
"x25519": x25519Config,
}
c := configs[p["config"]]
conf := *c
// Set up the test parameters.
if p["nonblocking"] == "true" {
conf.NonBlocking = true
}
cConn, sConn := pipe()
client := Client(cConn, &conf)
server := Server(sConn, &conf)
var clientAlert, serverAlert Alert
done := make(chan bool)
go func(t *testing.T) {
defer close(done)
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertNoAlert)
}(t)
clientAlert = client.Handshake()
assertEquals(t, clientAlert, AlertNoAlert)
<-done
checkConsistency(t, client, server)
}
func TestBasicFlows(t *testing.T) {
params := map[string][]string{
"config": {
"basic config",
"HRR",
"ALPN",
"FFDH",
"x25519",
},
"blocking": {"true", "false"},
}
runParametrizedTest(t, params, testConnInner)
}
func TestInvalidSelfSigned(t *testing.T) {
cConn, sConn := pipe()
client := Client(cConn, &Config{ServerName: serverName})
// The server uses a self-signed certificate
server := Server(sConn, &Config{Certificates: certificates})
done := make(chan bool)
go func() {
server.Handshake()
done <- true
}()
clientAlert := client.Handshake()
assertEquals(t, clientAlert, AlertBadCertificate)
server.Close()
<-done
}
func TestExpiredCert(t *testing.T) {
clientConfig := &Config{
ServerName: serverName,
Time: func() time.Time { return time.Now().Add(-365 * 24 * time.Hour) },
}
cConn, sConn := pipe()
client := Client(cConn, clientConfig)
// The server uses a self-signed certificate
server := Server(sConn, &Config{Certificates: certificates})
done := make(chan bool)
go func() {
server.Handshake()
done <- true
}()
clientAlert := client.Handshake()
assertEquals(t, clientAlert, AlertBadCertificate)
server.Close()
<-done
}
func TestRootCAPool(t *testing.T) {
pool := x509.NewCertPool()
pool.AddCert(certificates[0].Chain[0])
clientConfig := &Config{
ServerName: serverName,
RootCAs: pool,
}
cConn, sConn := pipe()
client := Client(cConn, clientConfig)
// The server uses a self-signed certificate
server := Server(sConn, &Config{Certificates: certificates})
var clientAlert, serverAlert Alert
done := make(chan bool)
go func(t *testing.T) {
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertNoAlert)
done <- true
}(t)
clientAlert = client.Handshake()
assertEquals(t, clientAlert, AlertNoAlert)
<-done
}
func TestVerifyPeerCertificateAccepted(t *testing.T) {
var verifyCalled bool
pool := x509.NewCertPool()
pool.AddCert(certificates[0].Chain[0])
clientConfig := &Config{
ServerName: serverName,
RootCAs: pool,
VerifyPeerCertificate: func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error {
verifyCalled = true
assertEquals(t, len(rawCerts), 1)
assertEquals(t, len(verifiedChains), 1)
assertEquals(t, len(verifiedChains[0]), 1)
cert, err := x509.ParseCertificate(rawCerts[0])
assertNotError(t, err, "cert parsing error")
assertEquals(t, cert.Equal(verifiedChains[0][0]), true)
return nil
},
}
cConn, sConn := pipe()
client := Client(cConn, clientConfig)
// The server uses a self-signed certificate
server := Server(sConn, &Config{Certificates: certificates})
var clientAlert, serverAlert Alert
done := make(chan bool)
go func(t *testing.T) {
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertNoAlert)
done <- true
}(t)
clientAlert = client.Handshake()
assertEquals(t, clientAlert, AlertNoAlert)
assertEquals(t, verifyCalled, true)
<-done
}
func TestVerifyPeerCertificateInsecureSkipVerify(t *testing.T) {
var verifyCalled bool
clientConfig := &Config{
ServerName: serverName,
InsecureSkipVerify: true,
VerifyPeerCertificate: func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error {
verifyCalled = true
assertEquals(t, len(rawCerts), 1)
assertEquals(t, len(verifiedChains), 0)
return nil
},
}
cConn, sConn := pipe()
client := Client(cConn, clientConfig)
// The server uses a self-signed certificate
server := Server(sConn, &Config{Certificates: certificates})
var clientAlert, serverAlert Alert
done := make(chan bool)
go func(t *testing.T) {
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertNoAlert)
done <- true
}(t)
clientAlert = client.Handshake()
assertEquals(t, clientAlert, AlertNoAlert)
assertEquals(t, verifyCalled, true)
<-done
}
func TestVerifyPeerCertificateRejected(t *testing.T) {
var verifyCalled bool
clientConfig := &Config{
ServerName: serverName,
InsecureSkipVerify: true,
VerifyPeerCertificate: func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error {
verifyCalled = true
return errors.New("verify failed")
},
}
cConn, sConn := pipe()
client := Client(cConn, clientConfig)
// The server uses a self-signed certificate
server := Server(sConn, &Config{Certificates: certificates})
done := make(chan bool)
go func() {
server.Handshake()
done <- true
}()
clientAlert := client.Handshake()
assertEquals(t, clientAlert, AlertBadCertificate)
assertEquals(t, verifyCalled, true)
sConn.Close()
<-done
}
func TestCertChain(t *testing.T) {
// generate a CA cert
cakey, _ := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
certTemplate := &x509.Certificate{
SerialNumber: big.NewInt(1),
NotBefore: time.Now().Add(-time.Hour),
NotAfter: time.Now().Add(time.Hour),
IsCA: true,
BasicConstraintsValid: true,
}
cacertDER, _ := x509.CreateCertificate(rand.Reader, certTemplate, certTemplate, cakey.Public(), cakey)
cacert, _ := x509.ParseCertificate(cacertDER)
// generate a server cert
key, _ := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
template := &x509.Certificate{
SerialNumber: big.NewInt(1),
NotBefore: time.Now(),
NotAfter: time.Now().Add(time.Hour),
Subject: pkix.Name{CommonName: serverName},
DNSNames: []string{serverName},
}
certDER, _ := x509.CreateCertificate(rand.Reader, template, cacert, key.Public(), cakey)
cert, _ := x509.ParseCertificate(certDER)
serverConfig := &Config{
Certificates: []*Certificate{
{Chain: []*x509.Certificate{cert, cacert}, PrivateKey: key},
},
}
pool := x509.NewCertPool()
pool.AddCert(cacert)
clientConfig := &Config{
ServerName: serverName,
RootCAs: pool,
}
cConn, sConn := pipe()
client := Client(cConn, clientConfig)
// The server uses a self-signed certificate
server := Server(sConn, serverConfig)
var clientAlert, serverAlert Alert
done := make(chan bool)
go func(t *testing.T) {
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertNoAlert)
done <- true
}(t)
clientAlert = client.Handshake()
assertEquals(t, clientAlert, AlertNoAlert)
<-done
}
// TODO(#90): Add a test with mismatching server name
func TestClientAuth(t *testing.T) {
configServer := &Config{
RequireClientAuth: true,
Certificates: certificates,
}
configClient := &Config{
ServerName: serverName,
Certificates: clientCertificates,
InsecureSkipVerify: true,
}
cConn, sConn := pipe()
client := Client(cConn, configClient)
server := Server(sConn, configServer)
var clientAlert, serverAlert Alert
done := make(chan bool)
go func(t *testing.T) {
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertNoAlert)
done <- true
}(t)
clientAlert = client.Handshake()
assertEquals(t, clientAlert, AlertNoAlert)
<-done
checkConsistency(t, client, server)
assertTrue(t, client.state.Params.UsingClientAuth, "Session did not negotiate client auth")
}
func TestClientAuthVerifyPeerAccepted(t *testing.T) {
var verifyCalled bool
configServer := &Config{
RequireClientAuth: true,
Certificates: certificates,
VerifyPeerCertificate: func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error {
verifyCalled = true
assertEquals(t, len(verifiedChains), 0)
assertEquals(t, len(rawCerts), 1)
cert, err := x509.ParseCertificate(rawCerts[0])
assertNotError(t, err, "cert parsing")
assertEquals(t, cert.Equal(clientCert), true)
return nil
},
}
configClient := &Config{
ServerName: serverName,
Certificates: clientCertificates,
InsecureSkipVerify: true,
}
cConn, sConn := pipe()
client := Client(cConn, configClient)
server := Server(sConn, configServer)
var clientAlert, serverAlert Alert
done := make(chan bool)
go func(t *testing.T) {
clientAlert = client.Handshake()
assertEquals(t, clientAlert, AlertNoAlert)
done <- true
}(t)
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertNoAlert)
assertEquals(t, verifyCalled, true)
<-done
}
func TestClientAuthVerifyPeerRejected(t *testing.T) {
var verifyCalled bool
configServer := &Config{
RequireClientAuth: true,
Certificates: certificates,
VerifyPeerCertificate: func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error {
verifyCalled = true
return errors.New("verify failed")
},
}
configClient := &Config{
ServerName: serverName,
Certificates: clientCertificates,
InsecureSkipVerify: true,
}
cConn, sConn := pipe()
client := Client(cConn, configClient)
server := Server(sConn, configServer)
done := make(chan bool)
go func() {
client.Handshake()
done <- true
}()
serverAlert := server.Handshake()
assertEquals(t, serverAlert, AlertBadCertificate)
assertEquals(t, verifyCalled, true)
cConn.Close()
<-done
}
func TestPSKFlows(t *testing.T) {
for _, conf := range []*Config{pskConfig, pskECDHEConfig, pskDHEConfig} {
cConn, sConn := pipe()
client := Client(cConn, conf)
server := Server(sConn, conf)
var clientAlert, serverAlert Alert
done := make(chan bool)
go func(t *testing.T) {
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertNoAlert)
done <- true
}(t)
clientAlert = client.Handshake()
assertEquals(t, clientAlert, AlertNoAlert)
<-done
checkConsistency(t, client, server)
assertTrue(t, client.state.Params.UsingPSK, "Session did not use the provided PSK")
}
}
func TestNonBlockingReadBeforeConnected(t *testing.T) {
conn := Client(&bufferedConn{}, &Config{NonBlocking: true})
_, err := conn.Read(make([]byte, 10))
assertEquals(t, err.Error(), "Read called before the handshake completed")
}
func TestResumption(t *testing.T) {
// Phase 1: Verify that the session ticket gets sent and stored
clientConfig := resumptionConfig.Clone()
serverConfig := resumptionConfig.Clone()
cConn1, sConn1 := pipe()
client1 := Client(cConn1, clientConfig)
server1 := Server(sConn1, serverConfig)
var clientAlert, serverAlert Alert
done := make(chan bool)
go func(t *testing.T) {
serverAlert = server1.Handshake()
assertEquals(t, serverAlert, AlertNoAlert)
server1.Write([]byte{'a'})
done <- true
}(t)
clientAlert = client1.Handshake()
assertEquals(t, clientAlert, AlertNoAlert)
tmpBuf := make([]byte, 1)
n, err := client1.Read(tmpBuf)
assertNil(t, err, "Couldn't read one byte")
assertEquals(t, 1, n)
<-done
checkConsistency(t, client1, server1)
assertEquals(t, clientConfig.PSKs.Size(), 1)
assertEquals(t, serverConfig.PSKs.Size(), 1)
clientCache := clientConfig.PSKs.(*PSKMapCache)
serverCache := serverConfig.PSKs.(*PSKMapCache)
var serverPSK PreSharedKey
for _, key := range *serverCache {
serverPSK = key
}
var clientPSK PreSharedKey
for _, key := range *clientCache {
clientPSK = key
}
// Ensure that the PSKs are the same, except with regard to the
// receivedAt/expiresAt times, which might differ by a little.
assertEquals(t, clientPSK.CipherSuite, serverPSK.CipherSuite)
assertEquals(t, clientPSK.IsResumption, serverPSK.IsResumption)
assertByteEquals(t, clientPSK.Identity, serverPSK.Identity)
assertByteEquals(t, clientPSK.Key, serverPSK.Key)
assertEquals(t, clientPSK.NextProto, serverPSK.NextProto)
assertEquals(t, clientPSK.TicketAgeAdd, serverPSK.TicketAgeAdd)
receivedDelta := clientPSK.ReceivedAt.Sub(serverPSK.ReceivedAt) / time.Millisecond
expiresDelta := clientPSK.ExpiresAt.Sub(serverPSK.ExpiresAt) / time.Millisecond
assertTrue(t, receivedDelta < 10 && receivedDelta > -10, "Unequal received times")
assertTrue(t, expiresDelta < 10 && expiresDelta > -10, "Unequal received times")
// Phase 2: Verify that the session ticket gets used as a PSK
cConn2, sConn2 := pipe()
client2 := Client(cConn2, clientConfig)
server2 := Server(sConn2, serverConfig)
go func(t *testing.T) {
serverAlert = server2.Handshake()
assertEquals(t, serverAlert, AlertNoAlert)
done <- true
}(t)
clientAlert = client2.Handshake()
assertEquals(t, clientAlert, AlertNoAlert)
client2.Read(nil)
<-done
checkConsistency(t, client2, server2)
assertTrue(t, client2.state.Params.UsingPSK, "Session did not use the provided PSK")
}
func test0xRTT(t *testing.T, name string, p testInstanceState) {
conf := *pskConfig
conf.NonBlocking = true
if p["dtls"] == "true" {
conf.UseDTLS = true
}
cConn, sConn := pipe()
cbConn := newBufferedConn(cConn)
cbConn.SetAutoflush()
sbConn := newBufferedConn(sConn)
sbConn.SetAutoflush()
client := Client(cbConn, &conf)
server := Server(sbConn, &conf)
client.Handshake() // This sends CH
zdata := []byte("ABC")
n, err := client.Write(zdata) // This should succeeed
assertNotError(t, err, "Client was not able to write")
assertEquals(t, n, len(zdata))
hsUntilBlocked(t, server, sbConn) // Read CH and early data.
tmp := make([]byte, 10)
n, err = server.Read(tmp)
assertNotError(t, err, "Error reading early data")
tmp = tmp[:n]
assertByteEquals(t, zdata, tmp)
hsRunHandshakeOneThread(t, client, server)
assertTrue(t, client.state.Params.UsingEarlyData, "Session did not negotiate early data")
n, err = server.Read(tmp)
assertEquals(t, AlertWouldBlock, err)
assertEquals(t, 0, n)
}
func Test0xRTT(t *testing.T) {
params := map[string][]string{
"dtls": {"true", "false"},
}
runParametrizedTest(t, params, test0xRTT)
}
func Test0xRTTFailure(t *testing.T) {
// Client thinks it has a PSK
clientConfig := &Config{
ServerName: serverName,
CipherSuites: []CipherSuite{TLS_AES_128_GCM_SHA256},
PSKs: psks,
InsecureSkipVerify: true,
}
// Server doesn't
serverConfig := &Config{
CipherSuites: []CipherSuite{TLS_AES_128_GCM_SHA256},
Certificates: certificates,
}
cConn, sConn := pipe()
client := Client(cConn, clientConfig)
server := Server(sConn, serverConfig)
done := make(chan bool)
go func(t *testing.T) {
alert := server.Handshake()
assertEquals(t, alert, AlertNoAlert)
done <- true
}(t)
alert := client.Handshake()
assertEquals(t, alert, AlertNoAlert)
<-done
}
func TestKeyUpdate(t *testing.T) {
cConn, sConn := pipe()
conf := basicConfig
client := Client(cConn, conf)
server := Server(sConn, conf)
oneBuf := []byte{'a'}
c2s := make(chan bool)
s2c := make(chan bool)
go func(t *testing.T) {
alert := server.Handshake()
assertEquals(t, alert, AlertNoAlert)
// Send a single byte so that the client can consume NST.
server.Write(oneBuf)
s2c <- true
// Test server-initiated KeyUpdate
<-c2s
err := server.SendKeyUpdate(false)
assertNotError(t, err, "Key update send failed")
// Write a single byte so that the client can read it
// after KeyUpdate.
server.Write(oneBuf)
s2c <- true
// Null read to trigger key update
<-c2s
server.Read(oneBuf)
s2c <- true
// Null read to trigger key update and KeyUpdate response
<-c2s
server.Read(oneBuf)
server.Write(oneBuf)
s2c <- true
}(t)
alert := client.Handshake()
assertEquals(t, alert, AlertNoAlert)
// Read NST.
client.Read(oneBuf)
<-s2c
clientState0 := client.state
serverState0 := server.state
assertByteEquals(t, clientState0.serverTrafficSecret, serverState0.serverTrafficSecret)
assertByteEquals(t, clientState0.clientTrafficSecret, serverState0.clientTrafficSecret)
// Null read to trigger key update
c2s <- true
<-s2c
client.Read(oneBuf)
logf(logTypeHandshake, "Client read key update")
clientState1 := client.state
serverState1 := server.state
assertByteEquals(t, clientState1.serverTrafficSecret, serverState1.serverTrafficSecret)
assertByteEquals(t, clientState1.clientTrafficSecret, serverState1.clientTrafficSecret)
assertNotByteEquals(t, serverState0.serverTrafficSecret, serverState1.serverTrafficSecret)
assertByteEquals(t, clientState0.clientTrafficSecret, clientState1.clientTrafficSecret)
// Test client-initiated KeyUpdate
client.SendKeyUpdate(false)
client.Write(oneBuf)
c2s <- true
<-s2c
clientState2 := client.state
serverState2 := server.state
assertByteEquals(t, clientState2.serverTrafficSecret, serverState2.serverTrafficSecret)
assertByteEquals(t, clientState2.clientTrafficSecret, serverState2.clientTrafficSecret)
assertByteEquals(t, serverState1.serverTrafficSecret, serverState2.serverTrafficSecret)
assertNotByteEquals(t, clientState1.clientTrafficSecret, clientState2.clientTrafficSecret)
// Test client-initiated with keyUpdateRequested
client.SendKeyUpdate(true)
client.Write(oneBuf)
c2s <- true
<-s2c
client.Read(oneBuf)
clientState3 := client.state
serverState3 := server.state
assertByteEquals(t, clientState3.serverTrafficSecret, serverState3.serverTrafficSecret)
assertByteEquals(t, clientState3.clientTrafficSecret, serverState3.clientTrafficSecret)
assertNotByteEquals(t, serverState2.serverTrafficSecret, serverState3.serverTrafficSecret)
assertNotByteEquals(t, clientState2.clientTrafficSecret, clientState3.clientTrafficSecret)
}
func TestNonblockingHandshakeAndDataFlow(t *testing.T) {
cConn, sConn := pipe()
// Wrap these in a buffer so we can simulate blocking
cbConn := newBufferedConn(cConn)
sbConn := newBufferedConn(sConn)
client := Client(cbConn, nbConfig)
server := Server(sbConn, nbConfig)
var clientAlert, serverAlert Alert
// Send ClientHello
clientAlert = client.Handshake()
assertEquals(t, clientAlert, AlertNoAlert)
assertEquals(t, client.GetHsState(), StateClientWaitSH)
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertWouldBlock)
assertEquals(t, server.GetHsState(), StateServerStart)
// Release ClientHello
cbConn.Flush()
// Process ClientHello, send server first flight.
states := []State{StateServerNegotiated, StateServerWaitFlight2, StateServerWaitFinished}
for _, state := range states {
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertNoAlert)
assertEquals(t, server.GetHsState(), state)
}
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertWouldBlock)
clientAlert = client.Handshake()
assertEquals(t, clientAlert, AlertWouldBlock)
// Release server first flight
sbConn.Flush()
states = []State{StateClientWaitEE, StateClientWaitCertCR, StateClientWaitCV, StateClientWaitFinished, StateClientConnected}
for _, state := range states {
clientAlert = client.Handshake()
assertEquals(t, client.GetHsState(), state)
assertEquals(t, clientAlert, AlertNoAlert)
}
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertWouldBlock)
assertEquals(t, server.GetHsState(), StateServerWaitFinished)
// Release client's second flight.
cbConn.Flush()
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertNoAlert)
assertEquals(t, server.GetHsState(), StateServerConnected)
assertDeepEquals(t, client.state.Params, server.state.Params)
assertCipherSuiteParamsEquals(t, client.state.cryptoParams, server.state.cryptoParams)
assertByteEquals(t, client.state.resumptionSecret, server.state.resumptionSecret)
assertByteEquals(t, client.state.clientTrafficSecret, server.state.clientTrafficSecret)
assertByteEquals(t, client.state.serverTrafficSecret, server.state.serverTrafficSecret)
buf := []byte{'a', 'b', 'c'}
n, err := client.Write(buf)
assertNotError(t, err, "Couldn't write")
assertEquals(t, n, len(buf))
// read := make([]byte, 5)
// n, err = server.Read(buf)
}
type testExtensionHandler struct {
sent map[HandshakeType]bool
rcvd map[HandshakeType]bool
}
func newTestExtensionHandler() *testExtensionHandler {
return &testExtensionHandler{
make(map[HandshakeType]bool),
make(map[HandshakeType]bool),
}
}
type testExtensionBody struct {
t HandshakeType
}
const (
testExtensionType = ExtensionType(240) // Dummy type.
)
func (t testExtensionBody) Type() ExtensionType {
return testExtensionType
}
func (t testExtensionBody) Marshal() ([]byte, error) {
return []byte{byte(t.t)}, nil
}
func (t *testExtensionBody) Unmarshal(data []byte) (int, error) {
if len(data) != 1 {
return 0, fmt.Errorf("Illegal length")
}
t.t = HandshakeType(data[0])
return 1, nil
}
func (t *testExtensionHandler) Send(hs HandshakeType, el *ExtensionList) error {
t.sent[hs] = true
el.Add(&testExtensionBody{t: hs})
return nil
}
func (t *testExtensionHandler) Receive(hs HandshakeType, el *ExtensionList) error {
var body testExtensionBody
ok, _ := el.Find(&body)
if !ok {
return fmt.Errorf("Couldn't find extension")
}
if hs != body.t {
return fmt.Errorf("Does not match hs type")
}
t.rcvd[hs] = true
return nil
}
func (h *testExtensionHandler) Check(t *testing.T, hs []HandshakeType) {
assertEquals(t, len(hs), len(h.sent))
assertEquals(t, len(hs), len(h.rcvd))
for _, ht := range hs {
v, ok := h.sent[ht]
assertTrue(t, ok, "Cannot find handshake type in sent")
assertTrue(t, v, "Value wasn't true in sent")
v, ok = h.rcvd[ht]
assertTrue(t, ok, "Cannot find handshake type in rcvd")
assertTrue(t, v, "Value wasn't true in rcvd")
}
}
func TestExternalExtensions(t *testing.T) {
cConn, sConn := pipe()
handler := newTestExtensionHandler()
config := basicConfig.Clone()
config.ExtensionHandler = handler
client := Client(cConn, config)
server := Server(sConn, config)
var clientAlert, serverAlert Alert
done := make(chan bool)
go func(t *testing.T) {
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertNoAlert)
done <- true
}(t)
clientAlert = client.Handshake()
assertEquals(t, clientAlert, AlertNoAlert)
<-done
assertDeepEquals(t, client.state.Params, server.state.Params)
assertCipherSuiteParamsEquals(t, client.state.cryptoParams, server.state.cryptoParams)
assertByteEquals(t, client.state.resumptionSecret, server.state.resumptionSecret)
assertByteEquals(t, client.state.clientTrafficSecret, server.state.clientTrafficSecret)
assertByteEquals(t, client.state.serverTrafficSecret, server.state.serverTrafficSecret)
handler.Check(t, []HandshakeType{
HandshakeTypeClientHello,
HandshakeTypeServerHello,
HandshakeTypeEncryptedExtensions,
})
}
func TestConnectionState(t *testing.T) {
pool := x509.NewCertPool()
pool.AddCert(serverCert)
configClient := &Config{
ServerName: serverName,
RootCAs: pool,
Certificates: clientCertificates,
}
serverConfig := &Config{
RequireClientAuth: true,
Certificates: certificates,
}
cConn, sConn := pipe()
client := Client(cConn, configClient)
server := Server(sConn, serverConfig)
done := make(chan bool)
go func(t *testing.T) {
serverAlert := server.Handshake()
assertEquals(t, serverAlert, AlertNoAlert)
done <- true
}(t)
clientAlert := client.Handshake()
assertEquals(t, clientAlert, AlertNoAlert)
<-done
clientCS := client.ConnectionState()
serverCS := server.ConnectionState()
assertEquals(t, clientCS.CipherSuite.Suite, configClient.CipherSuites[0])
assertDeepEquals(t, clientCS.VerifiedChains, [][]*x509.Certificate{{serverCert}})
assertDeepEquals(t, clientCS.PeerCertificates, []*x509.Certificate{serverCert})
assertEquals(t, serverCS.CipherSuite.Suite, serverConfig.CipherSuites[0])
assertDeepEquals(t, serverCS.PeerCertificates, []*x509.Certificate{clientCert})
}
func TestDTLS(t *testing.T) {
cConn, sConn := pipe()
handler := newTestExtensionHandler()
config := dtlsConfig.Clone()
config.ExtensionHandler = handler
client := Client(cConn, config)
server := Server(sConn, config)
var clientAlert, serverAlert Alert
done := make(chan bool)
go func(t *testing.T) {
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertNoAlert)
done <- true
}(t)
clientAlert = client.Handshake()
assertEquals(t, clientAlert, AlertNoAlert)
<-done
assertDeepEquals(t, client.state.Params, server.state.Params)
assertCipherSuiteParamsEquals(t, client.state.cryptoParams, server.state.cryptoParams)
assertByteEquals(t, client.state.resumptionSecret, server.state.resumptionSecret)
assertByteEquals(t, client.state.clientTrafficSecret, server.state.clientTrafficSecret)
assertByteEquals(t, client.state.serverTrafficSecret, server.state.serverTrafficSecret)
handler.Check(t, []HandshakeType{
HandshakeTypeClientHello,
HandshakeTypeServerHello,
HandshakeTypeEncryptedExtensions,
})
}
func TestNonblockingHandshakeAndDataFlowDTLS(t *testing.T) {
cConn, sConn := pipe()
// Wrap these in a buffer so we can simulate blocking
cbConn := newBufferedConn(cConn)
sbConn := newBufferedConn(sConn)
client := Client(cbConn, nbDTLSConfig)
server := Server(sbConn, nbDTLSConfig)
var clientAlert, serverAlert Alert
// Send ClientHello
clientAlert = client.Handshake()
assertEquals(t, clientAlert, AlertNoAlert)
assertEquals(t, client.GetHsState(), StateClientWaitSH)
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertWouldBlock)
assertEquals(t, server.GetHsState(), StateServerStart)
// Release ClientHello
cbConn.Flush()
// Process ClientHello, send server first flight.
states := []State{StateServerNegotiated, StateServerWaitFlight2, StateServerWaitFinished}
for _, state := range states {
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertNoAlert)
assertEquals(t, server.GetHsState(), state)
}
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertWouldBlock)
clientAlert = client.Handshake()
assertEquals(t, clientAlert, AlertWouldBlock)
// Release server first flight
sbConn.Flush()
states = []State{StateClientWaitEE, StateClientWaitCertCR, StateClientWaitCV, StateClientWaitFinished, StateClientConnected}
for _, state := range states {
clientAlert = client.Handshake()
assertEquals(t, client.GetHsState(), state)
assertEquals(t, clientAlert, AlertNoAlert)
}
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertWouldBlock)
assertEquals(t, server.GetHsState(), StateServerWaitFinished)
// Release client's second flight.
cbConn.Flush()
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertNoAlert)
assertEquals(t, server.GetHsState(), StateServerConnected)
assertDeepEquals(t, client.state.Params, server.state.Params)
assertCipherSuiteParamsEquals(t, client.state.cryptoParams, server.state.cryptoParams)
assertByteEquals(t, client.state.resumptionSecret, server.state.resumptionSecret)
assertByteEquals(t, client.state.clientTrafficSecret, server.state.clientTrafficSecret)
assertByteEquals(t, client.state.serverTrafficSecret, server.state.serverTrafficSecret)
buf := []byte{'a', 'b', 'c'}
n, err := client.Write(buf)
assertNotError(t, err, "Couldn't write")
assertEquals(t, n, len(buf))
// read := make([]byte, 5)
// n, err = server.Read(buf)
}
func TestTimeoutAndRetransmissionDTLS(t *testing.T) {
cConn, sConn := pipe()
// Wrap these in a buffer so we can simulate blocking
cbConn := newBufferedConn(cConn)
sbConn := newBufferedConn(sConn)
client := Client(cbConn, nbDTLSConfig)
server := Server(sbConn, nbDTLSConfig)
var clientAlert, serverAlert Alert
// Send ClientHello
clientAlert = client.Handshake()
assertEquals(t, clientAlert, AlertNoAlert)
assertEquals(t, client.GetHsState(), StateClientWaitSH)
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertWouldBlock)
assertEquals(t, server.GetHsState(), StateServerStart)
// Simulate loss for the ClientHello
cbConn.Clear()
// Only client should be running a timer.
waiting, timeout := server.GetDTLSTimeout()
assertTrue(t, !waiting, fmt.Sprintf("Server timer armed: %v", timeout))
waiting, timeout = client.GetDTLSTimeout()
assertTrue(t, waiting, "Client timer not armed")
// Now check the timer.
time.Sleep(timeout)
clientAlert = client.Handshake()
assertEquals(t, clientAlert, AlertWouldBlock)
assertEquals(t, client.GetHsState(), StateClientWaitSH)
// Release ClientHello
cbConn.Flush()
// Process ClientHello, send server first flight.
states := []State{StateServerNegotiated, StateServerWaitFlight2, StateServerWaitFinished}
for _, state := range states {
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertNoAlert)
assertEquals(t, server.GetHsState(), state)
}
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertWouldBlock)
// Simulate loss for the server's first flight.
sbConn.Clear()
// Both sides should be running timers
waiting, timeout = client.GetDTLSTimeout()
assertTrue(t, waiting, "Client timer not armed")
waiting, timeout = server.GetDTLSTimeout()
assertTrue(t, waiting, "Server timer not armed")
// Now check the timer.
time.Sleep(timeout)
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertWouldBlock)
assertEquals(t, server.GetHsState(), StateServerWaitFinished)
sbConn.Flush()
states = []State{StateClientWaitEE, StateClientWaitCertCR, StateClientWaitCV, StateClientWaitFinished, StateClientConnected}
for _, state := range states {
clientAlert = client.Handshake()
assertEquals(t, client.GetHsState(), state)
assertEquals(t, clientAlert, AlertNoAlert)
}
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertWouldBlock)
assertEquals(t, server.GetHsState(), StateServerWaitFinished)
// Release client's second flight.
cbConn.Flush()
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertNoAlert)
assertEquals(t, server.GetHsState(), StateServerConnected)
assertDeepEquals(t, client.state.Params, server.state.Params)
assertCipherSuiteParamsEquals(t, client.state.cryptoParams, server.state.cryptoParams)
assertByteEquals(t, client.state.resumptionSecret, server.state.resumptionSecret)
assertByteEquals(t, client.state.clientTrafficSecret, server.state.clientTrafficSecret)
assertByteEquals(t, client.state.serverTrafficSecret, server.state.serverTrafficSecret)
}
func checkTimersEqualLabels(t *testing.T, c *Conn, labels []string) {
timers := c.hsCtx.timers.getAllTimers()
timerLabels := make(map[string]bool)
expectedLabels := make(map[string]bool)
// Check that the arrays are the same
for _, timer := range timers {
timerLabels[timer] = true
}
for _, label := range labels {
expectedLabels[label] = true
assertTrue(t, timerLabels[label], fmt.Sprintf("Timer should have been armed: %v", label))
}
for _, timer := range timers {
assertTrue(t, expectedLabels[timer], fmt.Sprintf("Timer should not have been armed: %v", timer))
}
}
func hsUntilBlocked(t *testing.T, c *Conn, b *bufferedConn) {
// First run until we have consumed all the data
for !b.Empty() {
alert := c.Handshake()
switch alert {
default:
t.Fatalf("Unexpected alert")
case AlertWouldBlock, AlertNoAlert, AlertStatelessRetry:
}
}
// Now run until we block
for {
alert := c.Handshake()
if alert == AlertWouldBlock {
return
}
assertEquals(t, alert, AlertNoAlert)
}
}
func hsUntilComplete(t *testing.T, c *Conn) {
for {
alert := c.Handshake()
assertTrue(t,
alert == AlertWouldBlock ||
alert == AlertNoAlert,
"Unexpected alert")
if c.GetHsState() == StateClientConnected ||
c.GetHsState() == StateServerConnected {
break
}
}
}
func hsRunHandshakeOneThread(t *testing.T, client *Conn, server *Conn) {
assertTrue(t, client.config.NonBlocking && server.config.NonBlocking, "Both sides need to be in nonblocking mode")
for client.GetHsState() != StateClientConnected || server.GetHsState() != StateServerConnected {
alert := client.Handshake()
switch alert {
default:
t.Fatalf("Unexpected alert")
case AlertWouldBlock, AlertNoAlert:
}
alert = server.Handshake()
switch alert {
default:
t.Fatalf("Unexpected alert %v", alert)
case AlertWouldBlock, AlertNoAlert, AlertStatelessRetry:
}
}
checkConsistency(t, client, server)
}
func runAllTimers(t *testing.T, c *Conn) {
for {
waiting, timeout := c.GetDTLSTimeout()
if !waiting {
return
}
if timeout > 0 {
time.Sleep(timeout)
}
alert := c.Handshake()
assertEquals(t, alert, AlertWouldBlock)
}
}
func TestAckDTLSNormal(t *testing.T) {
cConn, sConn := pipe()
cbConn := newBufferedConn(cConn)
sbConn := newBufferedConn(sConn)
cbConn.SetAutoflush()
sbConn.SetAutoflush()
client := Client(cbConn, nbDTLSConfig)
server := Server(sbConn, nbDTLSConfig)
// Send ClientHello
hsUntilBlocked(t, client, cbConn)
// Process ClientHello, send server first flight.
hsUntilBlocked(t, server, sbConn)
// Both sides should be have armed retransmit timers.
checkTimersEqualLabels(t, client, []string{retransmitTimerLabel})
checkTimersEqualLabels(t, server, []string{retransmitTimerLabel})
// Now run the client and server to completion
hsUntilComplete(t, client)
hsUntilComplete(t, server)
// Client will have retransmit until we read the ACK
checkTimersEqualLabels(t, client, []string{retransmitTimerLabel})
// Server should have no timer
checkTimersEqualLabels(t, server, []string{})
// Now read some data from the server so we get the ACK
b := make([]byte, 10)
n, _ := client.Read(b)
assertEquals(t, 0, n)
// Client will now have no timers
checkTimersEqualLabels(t, client, []string{})
}
func TestAckDTLSLoseEE(t *testing.T) {
cConn, sConn := pipe()
cbConn := newBufferedConn(cConn)
sbConn := newBufferedConn(sConn)
sbConn.Lose(1) // Lose EE
cbConn.SetAutoflush()
sbConn.SetAutoflush()
client := Client(cbConn, nbDTLSConfig)
server := Server(sbConn, nbDTLSConfig)
// Send ClientHello
hsUntilBlocked(t, client, cbConn)
// Process ClientHello, send server first flight.
hsUntilBlocked(t, server, sbConn)
// Both sides should be have armed retransmit timers.
checkTimersEqualLabels(t, client, []string{retransmitTimerLabel})
checkTimersEqualLabels(t, server, []string{retransmitTimerLabel})
// Now process as much of the server first flight as is there.
hsUntilBlocked(t, client, cbConn)
// Client should now have the ACK timer armed
checkTimersEqualLabels(t, client, []string{ackTimerLabel})
// Now expire the timers
runAllTimers(t, client)
// Process ACK
hsUntilBlocked(t, server, sbConn)
// Now run the client and server to completion
hsUntilComplete(t, client)
hsUntilComplete(t, server)
}
func readWriteExpectFail(t *testing.T, c *Conn) {
tmp := make([]byte, 10)
n, err := c.Read(tmp)
assertEquals(t, 0, n)
assertError(t, err, "Read too early worked")
n, err = c.Write(tmp)
assertEquals(t, 0, n)
assertError(t, err, "Write too early worked")
}
func writeExpectFail(t *testing.T, c *Conn) {
tmp := make([]byte, 10)
n, err := c.Write(tmp)
assertEquals(t, 0, n)
assertError(t, err, "Write too early worked")
}
func TestEarlyIOFail(t *testing.T) {
cConn, sConn := pipe()
cbConn := newBufferedConn(cConn)
sbConn := newBufferedConn(sConn)
cbConn.SetAutoflush()
sbConn.SetAutoflush()
client := Client(cbConn, nbConfig)
server := Server(sbConn, nbConfig)
readWriteExpectFail(t, client)
readWriteExpectFail(t, server)
client.Handshake()
server.Handshake()
readWriteExpectFail(t, client)
readWriteExpectFail(t, server)
}
func TestDTLSOutOfEpochHSFail(t *testing.T) {
cConn, sConn := pipe()
cbConn := newBufferedConn(cConn)
sbConn := newBufferedConn(sConn)
cbConn.SetAutoflush()
sbConn.SetAutoflush()
client := Client(cbConn, nbDTLSConfig)
server := Server(sbConn, nbDTLSConfig)
hsUntilBlocked(t, client, cbConn)
hsUntilBlocked(t, server, sbConn)
cbConn.Write([]byte{byte(RecordTypeApplicationData),
byte(dtls12WireVersion >> 8), byte(dtls12WireVersion & 0xff),
0, 0, 0, 0, 0, 0, 0, 0, // Epoch 0, seq 0
0, 5, 1, 2, 3, 4, 5, // Payload
})
// This causes an error because it's an unexpected record type.
err := server.Handshake()
assertEquals(t, err, AlertCloseNotify)
}
func TestDTLSOutOfEpochPostHSDiscard(t *testing.T) {
cConn, sConn := pipe()
cbConn := newBufferedConn(cConn)
sbConn := newBufferedConn(sConn)
cbConn.SetAutoflush()
sbConn.SetAutoflush()
client := Client(cbConn, pskDTLSConfig)
server := Server(sbConn, pskDTLSConfig)
hsRunHandshakeOneThread(t, client, server)
// Now inject something with epoch 0, but as app data.
// It will get discarded.
cbConn.Write([]byte{byte(RecordTypeApplicationData),
byte(dtls12WireVersion >> 8), byte(dtls12WireVersion & 0xff),
0, 0, 0, 0, 0, 0, 0, 0, // Epoch 0, seq 0
0, 5, 1, 2, 3, 4, 5, // Payload
})
tmp := make([]byte, 10)
_, err := server.Read(tmp)
assertEquals(t, err, AlertWouldBlock)
}
func TestHRRRecordVersion(t *testing.T) {
cConn, sConn := pipe()
cbConn := newBufferedConn(cConn)
sbConn := newBufferedConn(sConn)
cconf := *pskConfig
cconf.NonBlocking = true
client := Client(cbConn, &cconf)
sconf := *hrrConfig
sconf.NonBlocking = true
cp, err := NewDefaultCookieProtector()
assertNotError(t, err, "Couldn't make default cookie protector")
sconf.CookieProtector = cp
server := Server(sbConn, &sconf)
hsUntilBlocked(t, client, cbConn) // CH1
cbConn.Flush()
hsUntilBlocked(t, server, sbConn) // HRR
sbConn.Flush()
hsUntilBlocked(t, client, cbConn) // CH2
p := make([]byte, 3)
_, err = io.ReadFull(&cbConn.buffer, p)
assertNotError(t, err, "should have records available")
expectedRecord := []byte{
byte(RecordTypeHandshake),
byte(tls12Version >> 8),
byte(tls12Version & 0xff),
}
assertByteEquals(t, p, expectedRecord)
}
// Test for issue #175.
func TestEarlyDataWithHRR(t *testing.T) {
cConn, sConn := pipe()
cconf := *pskConfig
cconf.NonBlocking = true
client := Client(cConn, &cconf)
sconf := *hrrConfig
cp, err := NewDefaultCookieProtector()
assertNotError(t, err, "Couldn't make default cookie protector")
sconf.CookieProtector = cp
sconf.NonBlocking = true
server := Server(sConn, &sconf)
hsRunHandshakeOneThread(t, client, server)
}
func TestEarlyDataNotWritableAfterHRR(t *testing.T) {
cConn, sConn := pipe()
cbConn := newBufferedConn(cConn)
sbConn := newBufferedConn(sConn)
cbConn.SetAutoflush()
sbConn.SetAutoflush()
cconf := *pskConfig
cconf.NonBlocking = true
client := Client(cbConn, &cconf)
sconf := *hrrConfig
cp, err := NewDefaultCookieProtector()
assertNotError(t, err, "Couldn't make default cookie protector")
sconf.CookieProtector = cp
sconf.NonBlocking = true
server := Server(sbConn, &sconf)
// Send CH
hsUntilBlocked(t, client, cbConn)
assertTrue(t, client.Writable(), "Client was not writeable")
// Reject 0-RTT
hsUntilBlocked(t, server, sbConn)
// Process HRR
err = client.Handshake()
assertEquals(t, err, AlertNoAlert)
assertTrue(t, !client.Writable(), "Client not writeable after HRR")
n, err := client.Write([]byte{1, 2, 3})
assertError(t, err, "Write succeeded")
assertEquals(t, n, 0)
// Finish handshake
hsRunHandshakeOneThread(t, client, server)
}
func TestHandshakeMessageAcrossBoundary(t *testing.T) {
cConn, sConn := pipe()
// Wrap these in a buffer so we can simulate blocking
cbConn := newBufferedConn(cConn)
sbConn := newBufferedConn(sConn)
client := Client(cbConn, nbConfig)
server := Server(sbConn, nbConfig)
var clientAlert, serverAlert Alert
// Send ClientHello
clientAlert = client.Handshake()
assertEquals(t, clientAlert, AlertNoAlert)
assertEquals(t, client.GetHsState(), StateClientWaitSH)
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertWouldBlock)
assertEquals(t, server.GetHsState(), StateServerStart)
// Release ClientHello
cbConn.Flush()
// Process ClientHello, send server first flight.
states := []State{StateServerNegotiated, StateServerWaitFlight2, StateServerWaitFinished}
for _, state := range states {
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertNoAlert)
assertEquals(t, server.GetHsState(), state)
}
serverAlert = server.Handshake()
assertEquals(t, serverAlert, AlertWouldBlock)
clientAlert = client.Handshake()
assertEquals(t, clientAlert, AlertWouldBlock)
// Rewrite the SH to include an extra byte.
sbConn.Flush()
buf := make([]byte, 1024)
n, err := cbConn.Read(buf)
assertNotError(t, err, "Error reading SH")
assertTrue(t, n < len(buf), "SH is too long")
buf = buf[:n]
l, _ := decodeUint(buf[3:], 2)
l++
encodeUint(l, 2, buf[3:])
buf = append(buf, byte(HandshakeTypeEncryptedExtensions))
sbConn.Write(buf)
sbConn.Flush()
err = client.Handshake()
assertEquals(t, AlertDecodeError, err)
}
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