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fn: added a simple validation function for encoded IDs (#1448)

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This commit is contained in:
Tolga Ceylan
2019-03-31 00:29:20 -07:00
committed by GitHub
parent 0e4bf69405
commit 0e6dd9e1bb
2 changed files with 39 additions and 0 deletions
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19
api/id/id.go
View File

@@ -213,6 +213,25 @@ var dec = [...]byte{
// EncodedSize is the length of a text encoded Id.
const EncodedSize = 26
// ValidateText returns true if the data is a valid
// encoding.
func ValidateText(v []byte) bool {
return len(v) == EncodedSize &&
dec[v[0]] != 0xFF && dec[v[1]] != 0xFF &&
dec[v[2]] != 0xFF && dec[v[3]] != 0xFF &&
dec[v[4]] != 0xFF && dec[v[5]] != 0xFF &&
dec[v[6]] != 0xFF && dec[v[7]] != 0xFF &&
dec[v[8]] != 0xFF && dec[v[9]] != 0xFF &&
dec[v[10]] != 0xFF && dec[v[11]] != 0xFF &&
dec[v[12]] != 0xFF && dec[v[13]] != 0xFF &&
dec[v[14]] != 0xFF && dec[v[15]] != 0xFF &&
dec[v[16]] != 0xFF && dec[v[17]] != 0xFF &&
dec[v[18]] != 0xFF && dec[v[19]] != 0xFF &&
dec[v[20]] != 0xFF && dec[v[21]] != 0xFF &&
dec[v[22]] != 0xFF && dec[v[23]] != 0xFF &&
dec[v[24]] != 0xFF && dec[v[25]] != 0xFF
}
// UnmarshalText implements the encoding.TextUnmarshaler interface by
// parsing the data as string encoded Id.
//

20
api/id/id_test.go
View File

@@ -33,6 +33,26 @@ func BenchmarkUnmarshalText(b *testing.B) {
}
}
func BenchmarkValidateText(b *testing.B) {
id := New()
byts, _ := id.MarshalText()
for i := 0; i < b.N; i++ {
ValidateText(byts)
}
}
func TestValidInValid(t *testing.T) {
id := New()
byts, _ := id.MarshalText()
if !ValidateText(byts) {
t.Fatal("valid id should pass")
}
byts[5] = ' '
if ValidateText(byts) {
t.Fatal("invalid id should not pass")
}
}
func TestIdRaw(t *testing.T) {
SetMachineIdHost(net.IP{127, 0, 0, 1}, 8080)