seiso.moe
1package magna
2
3import (
4 "fmt"
5)
6
7// BufferOverflowError represents an error when there is a buffer overflow.
8type BufferOverflowError struct {
9 Length int
10 Offset int
11}
12
13func (e *BufferOverflowError) Error() string {
14 return fmt.Sprintf("buffer overflow: attempted to read past buffer length %d at offset %d", e.Length, e.Offset)
15}
16
17func (e *BufferOverflowError) Is(target error) bool {
18 _, ok := target.(*BufferOverflowError)
19 return ok
20}
21
22// InvalidLabelError represents an error when an invalid label length is encountered.
23type InvalidLabelError struct {
24 Length int
25}
26
27func (e *InvalidLabelError) Error() string {
28 if e.Length > 63 {
29 return fmt.Sprintf("invalid domain label: length %d exceeds maximum 63", e.Length)
30 }
31 if e.Length == 0 {
32 return "invalid domain label: zero length label encountered"
33 }
34
35 // XXX: this should be unreachable
36 return fmt.Sprintf("invalid domain label: unexpected length %d", e.Length)
37}
38
39func (e *InvalidLabelError) Is(target error) bool {
40 _, ok := target.(*InvalidLabelError)
41 return ok
42}
43
44// DomainCompressionError represents an error related to domain compression.
45type DomainCompressionError struct{}
46
47func (e *DomainCompressionError) Error() string {
48 return "invalid domain compression: pointer loop detected"
49}
50
51func (e *DomainCompressionError) Is(target error) bool {
52 _, ok := target.(*DomainCompressionError)
53 return ok
54}