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// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
// SPDX-License-Identifier: MIT
//go:build !debug
// +build !debug
package stun
import (
"errors"
"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 errors.Is(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 errors.Is(err, ErrAttributeSizeOverflow)
}
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