1 files changed, 45 insertions, 0 deletions
diff --git a/vendor/github.com/pion/stun/checks.go b/vendor/github.com/pion/stun/checks.go
new file mode 100644
index 0000000..a760997
--- /dev/null
+++ b/vendor/github.com/pion/stun/checks.go
@@ -0,0 +1,45 @@
+// +build !debug
+
+package stun
+
+import "github.com/pion/stun/internal/hmac"
+
+// CheckSize returns ErrAttrSizeInvalid if got is not equal to expected.
+func CheckSize(_ AttrType, got, expected int) error {
+	if got == expected {
+		return nil
+	}
+	return ErrAttributeSizeInvalid
+}
+
+func checkHMAC(got, expected []byte) error {
+	if hmac.Equal(got, expected) {
+		return nil
+	}
+	return ErrIntegrityMismatch
+}
+
+func checkFingerprint(got, expected uint32) error {
+	if got == expected {
+		return nil
+	}
+	return ErrFingerprintMismatch
+}
+
+// IsAttrSizeInvalid returns true if error means that attribute size is invalid.
+func IsAttrSizeInvalid(err error) bool {
+	return err == ErrAttributeSizeInvalid
+}
+
+// CheckOverflow returns ErrAttributeSizeOverflow if got is bigger that max.
+func CheckOverflow(_ AttrType, got, max int) error {
+	if got <= max {
+		return nil
+	}
+	return ErrAttributeSizeOverflow
+}
+
+// IsAttrSizeOverflow returns true if error means that attribute size is too big.
+func IsAttrSizeOverflow(err error) bool {
+	return err == ErrAttributeSizeOverflow
+}