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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| package spao_test | ||
|
|
||
| import ( | ||
| "testing" | ||
| "time" | ||
|
|
||
| "github.com/scionproto/scion/pkg/drkey" | ||
| "github.com/scionproto/scion/pkg/spao" | ||
| "github.com/scionproto/scion/private/drkey/drkeyutil" | ||
| "github.com/stretchr/testify/assert" | ||
| ) | ||
|
|
||
| func TestTimestamp(t *testing.T) { | ||
| testCases := map[string]struct { | ||
| currentTime time.Time | ||
| epoch drkey.Epoch | ||
| assertErr assert.ErrorAssertionFunc | ||
| }{ | ||
| "valid": { | ||
| currentTime: time.Now().UTC(), | ||
| epoch: getEpoch(time.Now()), | ||
| assertErr: assert.NoError, | ||
| }, | ||
| "invalid": { | ||
| currentTime: time.Now().UTC(), | ||
| epoch: getEpoch(time.Now().UTC().Add(-4 * 24 * time.Hour)), | ||
| assertErr: assert.Error, | ||
| }, | ||
| } | ||
| for name, tc := range testCases { | ||
| name, tc := name, tc | ||
| t.Run(name, func(t *testing.T) { | ||
|
|
||
| rt, err := spao.RelativeTimestamp(tc.epoch, tc.currentTime) | ||
| tc.assertErr(t, err) | ||
| if err != nil { | ||
| return | ||
| } | ||
| recoveredTime := spao.AbsoluteTimestamp(tc.epoch, rt) | ||
| assert.EqualValues(t, tc.currentTime, recoveredTime) | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| func getEpoch(t time.Time) drkey.Epoch { | ||
| epochDuration := drkeyutil.LoadEpochDuration() | ||
| duration := int64(epochDuration / time.Second) | ||
| idx := t.Unix() / duration | ||
| begin := uint32(idx * duration) | ||
| end := begin + uint32(duration) | ||
| return drkey.NewEpoch(begin, end) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,48 @@ | ||
| package drkeyutil | ||
|
|
||
| import ( | ||
| "os" | ||
| "time" | ||
|
|
||
| "github.com/scionproto/scion/pkg/private/util" | ||
| ) | ||
|
|
||
| const ( | ||
| // DefaultEpochDuration is the default duration for the drkey SecretValue and derived keys | ||
| DefaultEpochDuration = 24 * time.Hour | ||
| DefaultPrefetchEntries = 10000 | ||
| EnvVarEpochDuration = "SCION_TESTING_DRKEY_EPOCH_DURATION" | ||
| // DefaultAcceptanceWindowOffset is the time width for accepting incoming packets. The | ||
| // acceptance widown is then compute as: | ||
| // aw := [T-a, T+a) | ||
| // where aw:= acceptance window, T := time instant and a := acceptanceWindowOffset | ||
| // | ||
| // Picking the value equal or shorter than half of the drkey Grace Period ensures | ||
| // that we accept packets for active keys only. | ||
| DefaultAcceptanceWindowOffset = 2*time.Second + 500*time.Millisecond | ||
| EnvVarAccpetanceWindow = "SCION_TESTING_ACCEPTANCE_WINDOW" | ||
| ) | ||
|
|
||
| func LoadEpochDuration() time.Duration { | ||
| s := os.Getenv(EnvVarEpochDuration) | ||
| if s == "" { | ||
| return DefaultEpochDuration | ||
| } | ||
| duration, err := util.ParseDuration(s) | ||
| if err != nil { | ||
| return DefaultEpochDuration | ||
| } | ||
| return duration | ||
| } | ||
|
|
||
| func LoadAcceptanceWindow() time.Duration { | ||
| s := os.Getenv(EnvVarAccpetanceWindow) | ||
| if s == "" { | ||
| return DefaultAcceptanceWindowOffset | ||
| } | ||
| duration, err := util.ParseDuration(s) | ||
| if err != nil { | ||
| return DefaultAcceptanceWindowOffset | ||
| } | ||
| return duration | ||
| } |
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