Implement machine fingerprint hashing (T-501)

2026-07-20 00:19:13 +08:00
parent 94ea334d1c
commit 8d81276fd9
16 changed files with 465 additions and 9 deletions
@@ -0,0 +1,67 @@
+package windows
+
+import (
+	"errors"
+	"strings"
+	"testing"
+
+	"softbox.local/core/licensing"
+)
+
+func TestMachineHashFromUsesBothRequiredSources(t *testing.T) {
+	const machineGUID = "6F9619FF-8B86-D011-B42D-00C04FC964FF"
+	got, err := machineHashFrom(
+		func() (string, error) { return machineGUID, nil },
+		func() (uint32, error) { return 0x1a2b3c4d, nil },
+	)
+	if err != nil {
+		t.Fatalf("machineHashFrom() error = %v", err)
+	}
+	want, err := licensing.DeriveMachineHash(machineGUID, 0x1a2b3c4d)
+	if err != nil {
+		t.Fatalf("DeriveMachineHash() error = %v", err)
+	}
+	if got != want {
+		t.Fatalf("machineHashFrom() = %q, want %q", got, want)
+	}
+}
+
+func TestMachineHashFromFailsClosedWithoutLeakingSourceValues(t *testing.T) {
+	const secret = "synthetic-machine-guid-secret"
+	tests := []struct {
+		name       string
+		readGUID   machineGUIDReader
+		readSerial systemVolumeSerialReader
+	}{
+		{
+			name:       "GUID reader failure",
+			readGUID:   func() (string, error) { return "", errors.New(secret) },
+			readSerial: func() (uint32, error) { return 1, nil },
+		},
+		{
+			name:       "volume reader failure",
+			readGUID:   func() (string, error) { return "6f9619ff-8b86-d011-b42d-00c04fc964ff", nil },
+			readSerial: func() (uint32, error) { return 0, errors.New(secret) },
+		},
+		{
+			name:       "invalid GUID",
+			readGUID:   func() (string, error) { return secret, nil },
+			readSerial: func() (uint32, error) { return 1, nil },
+		},
+		{
+			name:       "missing GUID reader",
+			readSerial: func() (uint32, error) { return 1, nil },
+		},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			_, err := machineHashFrom(test.readGUID, test.readSerial)
+			if !errors.Is(err, ErrMachineFingerprintUnavailable) {
+				t.Fatalf("machineHashFrom() error = %v, want ErrMachineFingerprintUnavailable", err)
+			}
+			if strings.Contains(err.Error(), secret) {
+				t.Fatalf("machineHashFrom() leaked a source value in %q", err)
+			}
+		})
+	}
+}