Add validate the input mac address on docker run command

Signed-off-by: Lei Jitang <leijitang@huawei.com>

opts/opts.go

@@ -188,6 +188,15 @@ func ValidateIPAddress(val string) (string, error) {
 	return "", fmt.Errorf("%s is not an ip address", val)
 }
 
+func ValidateMACAddress(val string) (string, error) {
+	_, err := net.ParseMAC(strings.TrimSpace(val))
+	if err != nil {
+		return "", err
+	} else {
+		return val, nil
+	}
+}
+
 // Validates domain for resolvconf search configuration.
 // A zero length domain is represented by .
 func ValidateDnsSearch(val string) (string, error) {

opts/opts_test.go

@@ -28,6 +28,20 @@ func TestValidateIPAddress(t *testing.T) {
 
 }
 
+func TestValidateMACAddress(t *testing.T) {
+	if _, err := ValidateMACAddress(`92:d0:c6:0a:29:33`); err != nil {
+		t.Fatalf("ValidateMACAddress(`92:d0:c6:0a:29:33`) got %s", err)
+	}
+
+	if _, err := ValidateMACAddress(`92:d0:c6:0a:33`); err == nil {
+		t.Fatalf("ValidateMACAddress(`92:d0:c6:0a:33`) succeeded; expected failure on invalid MAC")
+	}
+
+	if _, err := ValidateMACAddress(`random invalid string`); err == nil {
+		t.Fatalf("ValidateMACAddress(`random invalid string`) succeeded; expected failure on invalid MAC")
+	}
+}
+
 func TestListOpts(t *testing.T) {
 	o := NewListOpts(nil)
 	o.Set("foo")