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server/vendor/github.com/pion/stun/checks_debug.go

@@ -0,0 +1,65 @@
+// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
+// SPDX-License-Identifier: MIT
+
+//go:build debug
+// +build debug
+
+package stun
+
+import "github.com/pion/stun/internal/hmac"
+
+// CheckSize returns *AttrLengthError if got is not equal to expected.
+func CheckSize(a AttrType, got, expected int) error {
+	if got == expected {
+		return nil
+	}
+	return &AttrLengthErr{
+		Got:      got,
+		Expected: expected,
+		Attr:     a,
+	}
+}
+
+func checkHMAC(got, expected []byte) error {
+	if hmac.Equal(got, expected) {
+		return nil
+	}
+	return &IntegrityErr{
+		Expected: expected,
+		Actual:   got,
+	}
+}
+
+func checkFingerprint(got, expected uint32) error {
+	if got == expected {
+		return nil
+	}
+	return &CRCMismatch{
+		Actual:   got,
+		Expected: expected,
+	}
+}
+
+// IsAttrSizeInvalid returns true if error means that attribute size is invalid.
+func IsAttrSizeInvalid(err error) bool {
+	_, ok := err.(*AttrLengthErr)
+	return ok
+}
+
+// CheckOverflow returns *AttrOverflowErr if got is bigger that max.
+func CheckOverflow(t AttrType, got, max int) error {
+	if got <= max {
+		return nil
+	}
+	return &AttrOverflowErr{
+		Type: t,
+		Got:  got,
+		Max:  max,
+	}
+}
+
+// IsAttrSizeOverflow returns true if error means that attribute size is too big.
+func IsAttrSizeOverflow(err error) bool {
+	_, ok := err.(*AttrOverflowErr)
+	return ok
+}