// TestAlertErrors performs negative tests against payload serialization,
// deserialization of Alert to confirm error paths work correctly.
func TestAlertErrors(t *testing.T) {
pver := btcwire.ProtocolVersion
baseAlert := btcwire.NewAlert(
1, 1337093712, 1368628812, 1015,
1013, []int32{1014}, 0, 40599, []string{"/Satoshi:0.7.2/"}, 5000, "",
"URGENT",
)
baseAlertEncoded := []byte{
0x01, 0x00, 0x00, 0x00, 0x50, 0x6e, 0xb2, 0x4f, 0x00, 0x00, 0x00, 0x00, 0x4c, 0x9e, 0x93, 0x51, //|....Pn.O....L..Q|
0x00, 0x00, 0x00, 0x00, 0xf7, 0x03, 0x00, 0x00, 0xf5, 0x03, 0x00, 0x00, 0x01, 0xf6, 0x03, 0x00, //|................|
0x00, 0x00, 0x00, 0x00, 0x00, 0x97, 0x9e, 0x00, 0x00, 0x01, 0x0f, 0x2f, 0x53, 0x61, 0x74, 0x6f, //|.........../Sato|
0x73, 0x68, 0x69, 0x3a, 0x30, 0x2e, 0x37, 0x2e, 0x32, 0x2f, 0x88, 0x13, 0x00, 0x00, 0x00, 0x06, //|shi:0.7.2/......|
0x55, 0x52, 0x47, 0x45, 0x4e, 0x54, 0x00, //|URGENT.|
}
tests := []struct {
in *btcwire.Alert // Value to encode
buf []byte // Wire encoding
pver uint32 // Protocol version for wire encoding
max int // Max size of fixed buffer to induce errors
writeErr error // Expected write error
readErr error // Expected read error
}{
// Force error in Version
{baseAlert, baseAlertEncoded, pver, 0, io.ErrShortWrite, io.EOF},
// Force error in SetCancel VarInt.
{baseAlert, baseAlertEncoded, pver, 28, io.ErrShortWrite, io.EOF},
// Force error in SetCancel ints.
{baseAlert, baseAlertEncoded, pver, 29, io.ErrShortWrite, io.EOF},
// Force error in MinVer
{baseAlert, baseAlertEncoded, pver, 40, io.ErrShortWrite, io.EOF},
// Force error in SetSubVer string VarInt.
{baseAlert, baseAlertEncoded, pver, 41, io.ErrShortWrite, io.EOF},
// Force error in SetSubVer strings.
{baseAlert, baseAlertEncoded, pver, 48, io.ErrShortWrite, io.EOF},
// Force error in Priority
{baseAlert, baseAlertEncoded, pver, 60, io.ErrShortWrite, io.EOF},
// Force error in Comment string.
{baseAlert, baseAlertEncoded, pver, 62, io.ErrShortWrite, io.EOF},
// Force error in StatusBar string.
{baseAlert, baseAlertEncoded, pver, 64, io.ErrShortWrite, io.EOF},
// Force error in Reserved string.
{baseAlert, baseAlertEncoded, pver, 70, io.ErrShortWrite, io.EOF},
}
t.Logf("Running %d tests", len(tests))
for i, test := range tests {
w := newFixedWriter(test.max)
err := test.in.Serialize(w, test.pver)
if reflect.TypeOf(err) != reflect.TypeOf(test.writeErr) {
t.Errorf("Alert.Serialize #%d wrong error got: %v, want: %v",
i, err, test.writeErr)
continue
}
var alert btcwire.Alert
r := newFixedReader(test.max, test.buf)
err = alert.Deserialize(r, test.pver)
if reflect.TypeOf(err) != reflect.TypeOf(test.readErr) {
t.Errorf("Alert.Deserialize #%d wrong error got: %v, want: %v",
i, err, test.readErr)
continue
}
}
// overflow the max number of elements in SetCancel
// maxCountSetCancel + 1 == 8388575 == \xdf\xff\x7f\x00
// replace bytes 29-33
badAlertEncoded := []byte{
0x01, 0x00, 0x00, 0x00, 0x50, 0x6e, 0xb2, 0x4f, 0x00, 0x00, 0x00, 0x00, 0x4c, 0x9e, 0x93, 0x51, //|....Pn.O....L..Q|
0x00, 0x00, 0x00, 0x00, 0xf7, 0x03, 0x00, 0x00, 0xf5, 0x03, 0x00, 0x00, 0xfe, 0xdf, 0xff, 0x7f, //|................|
0x00, 0x00, 0x00, 0x00, 0x00, 0x97, 0x9e, 0x00, 0x00, 0x01, 0x0f, 0x2f, 0x53, 0x61, 0x74, 0x6f, //|.........../Sato|
0x73, 0x68, 0x69, 0x3a, 0x30, 0x2e, 0x37, 0x2e, 0x32, 0x2f, 0x88, 0x13, 0x00, 0x00, 0x00, 0x06, //|shi:0.7.2/......|
0x55, 0x52, 0x47, 0x45, 0x4e, 0x54, 0x00, //|URGENT.|
}
var alert btcwire.Alert
r := bytes.NewReader(badAlertEncoded)
err := alert.Deserialize(r, pver)
if _, ok := err.(*btcwire.MessageError); !ok {
t.Errorf("Alert.Deserialize wrong error got: %T, want: %T",
err, btcwire.MessageError{})
}
// overflow the max number of elements in SetSubVer
// maxCountSetSubVer + 1 == 131071 + 1 == \x00\x00\x02\x00
// replace bytes 42-46
badAlertEncoded = []byte{
0x01, 0x00, 0x00, 0x00, 0x50, 0x6e, 0xb2, 0x4f, 0x00, 0x00, 0x00, 0x00, 0x4c, 0x9e, 0x93, 0x51, //|....Pn.O....L..Q|
0x00, 0x00, 0x00, 0x00, 0xf7, 0x03, 0x00, 0x00, 0xf5, 0x03, 0x00, 0x00, 0x01, 0xf6, 0x03, 0x00, //|................|
0x00, 0x00, 0x00, 0x00, 0x00, 0x97, 0x9e, 0x00, 0x00, 0xfe, 0x00, 0x00, 0x02, 0x00, 0x74, 0x6f, //|.........../Sato|
0x73, 0x68, 0x69, 0x3a, 0x30, 0x2e, 0x37, 0x2e, 0x32, 0x2f, 0x88, 0x13, 0x00, 0x00, 0x00, 0x06, //|shi:0.7.2/......|
0x55, 0x52, 0x47, 0x45, 0x4e, 0x54, 0x00, //|URGENT.|
}
r = bytes.NewReader(badAlertEncoded)
err = alert.Deserialize(r, pver)
if _, ok := err.(*btcwire.MessageError); !ok {
t.Errorf("Alert.Deserialize wrong error got: %T, want: %T",
err, btcwire.MessageError{})
}
}
// TestAlert tests serialization and deserialization
// of the payload to Alert
func TestAlert(t *testing.T) {
pver := btcwire.ProtocolVersion
alert := btcwire.NewAlert(
1, 1337093712, 1368628812, 1015,
1013, []int32{1014}, 0, 40599, []string{"/Satoshi:0.7.2/"}, 5000, "",
"URGENT: upgrade required, see http://bitcoin.org/dos for details",
)
w := new(bytes.Buffer)
err := alert.Serialize(w, pver)
if err != nil {
t.Error(err.Error())
}
serializedpayload := w.Bytes()
newAlert, err := btcwire.NewAlertFromPayload(serializedpayload, pver)
if err != nil {
t.Error(err.Error())
}
if alert.Version != newAlert.Version {
t.Errorf("NewAlertFromPayload: wrong Version - got %v, want %v ",
alert.Version, newAlert.Version)
}
if alert.RelayUntil != newAlert.RelayUntil {
t.Errorf("NewAlertFromPayload: wrong RelayUntil - got %v, want %v ",
alert.RelayUntil, newAlert.RelayUntil)
}
if alert.Expiration != newAlert.Expiration {
t.Errorf("NewAlertFromPayload: wrong Expiration - got %v, want %v ",
alert.Expiration, newAlert.Expiration)
}
if alert.ID != newAlert.ID {
t.Errorf("NewAlertFromPayload: wrong ID - got %v, want %v ",
alert.ID, newAlert.ID)
}
if alert.Cancel != newAlert.Cancel {
t.Errorf("NewAlertFromPayload: wrong Cancel - got %v, want %v ",
alert.Cancel, newAlert.Cancel)
}
if len(alert.SetCancel) != len(newAlert.SetCancel) {
t.Errorf("NewAlertFromPayload: wrong number of SetCancel - got %v, want %v ",
len(alert.SetCancel), len(newAlert.SetCancel))
}
for i := 0; i < len(alert.SetCancel); i++ {
if alert.SetCancel[i] != newAlert.SetCancel[i] {
t.Errorf("NewAlertFromPayload: wrong SetCancel[%v] - got %v, want %v ",
len(alert.SetCancel), alert.SetCancel[i], newAlert.SetCancel[i])
}
}
if alert.MinVer != newAlert.MinVer {
t.Errorf("NewAlertFromPayload: wrong MinVer - got %v, want %v ",
alert.MinVer, newAlert.MinVer)
}
if alert.MaxVer != newAlert.MaxVer {
t.Errorf("NewAlertFromPayload: wrong MaxVer - got %v, want %v ",
alert.MaxVer, newAlert.MaxVer)
}
if len(alert.SetSubVer) != len(newAlert.SetSubVer) {
t.Errorf("NewAlertFromPayload: wrong number of SetSubVer - got %v, want %v ",
len(alert.SetSubVer), len(newAlert.SetSubVer))
}
for i := 0; i < len(alert.SetSubVer); i++ {
if alert.SetSubVer[i] != newAlert.SetSubVer[i] {
t.Errorf("NewAlertFromPayload: wrong SetSubVer[%v] - got %v, want %v ",
len(alert.SetSubVer), alert.SetSubVer[i], newAlert.SetSubVer[i])
}
}
if alert.Priority != newAlert.Priority {
t.Errorf("NewAlertFromPayload: wrong Priority - got %v, want %v ",
alert.Priority, newAlert.Priority)
}
if alert.Comment != newAlert.Comment {
t.Errorf("NewAlertFromPayload: wrong Comment - got %v, want %v ",
alert.Comment, newAlert.Comment)
}
if alert.StatusBar != newAlert.StatusBar {
t.Errorf("NewAlertFromPayload: wrong StatusBar - got %v, want %v ",
alert.StatusBar, newAlert.StatusBar)
}
if alert.Reserved != newAlert.Reserved {
t.Errorf("NewAlertFromPayload: wrong Reserved - got %v, want %v ",
alert.Reserved, newAlert.Reserved)
}
}