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Introduce/use JSONFormatToInvalidSignatureError #2518

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merged 2 commits into from
Aug 19, 2024
Merged

Introduce/use JSONFormatToInvalidSignatureError #2518

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5c4c1e4
signature: introduce and use JSONFormatToInvalidSignatureError
kolyshkin Aug 15, 2024
a710dc0
signature: fix stuttering in an error message
kolyshkin Aug 15, 2024
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25 changes: 11 additions & 14 deletions signature/internal/rekor_set.go
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Original file line number Diff line number Diff line change
Expand Up @@ -40,17 +40,20 @@ type UntrustedRekorPayload struct {
// A compile-time check that UntrustedRekorSET implements json.Unmarshaler
var _ json.Unmarshaler = (*UntrustedRekorSET)(nil)

// UnmarshalJSON implements the json.Unmarshaler interface
func (s *UntrustedRekorSET) UnmarshalJSON(data []byte) error {
err := s.strictUnmarshalJSON(data)
if err != nil {
if formatErr, ok := err.(JSONFormatError); ok {
err = NewInvalidSignatureError(formatErr.Error())
}
// JSONFormatToInvalidSignatureError converts JSONFormatError to InvalidSignatureError.
// All other errors are returned as is.
func JSONFormatToInvalidSignatureError(err error) error {
if formatErr, ok := err.(JSONFormatError); ok {
err = NewInvalidSignatureError(formatErr.Error())
}
return err
}

// UnmarshalJSON implements the json.Unmarshaler interface
func (s *UntrustedRekorSET) UnmarshalJSON(data []byte) error {
return JSONFormatToInvalidSignatureError(s.strictUnmarshalJSON(data))
}

// strictUnmarshalJSON is UnmarshalJSON, except that it may return the internal JSONFormatError error type.
// Splitting it into a separate function allows us to do the JSONFormatError → InvalidSignatureError in a single place, the caller.
func (s *UntrustedRekorSET) strictUnmarshalJSON(data []byte) error {
Expand All @@ -77,13 +80,7 @@ var _ json.Unmarshaler = (*UntrustedRekorPayload)(nil)

// UnmarshalJSON implements the json.Unmarshaler interface
func (p *UntrustedRekorPayload) UnmarshalJSON(data []byte) error {
err := p.strictUnmarshalJSON(data)
if err != nil {
if formatErr, ok := err.(JSONFormatError); ok {
err = NewInvalidSignatureError(formatErr.Error())
}
}
return err
return JSONFormatToInvalidSignatureError(p.strictUnmarshalJSON(data))
}

// strictUnmarshalJSON is UnmarshalJSON, except that it may return the internal JSONFormatError error type.
Expand Down
10 changes: 2 additions & 8 deletions signature/internal/sigstore_payload.go
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Original file line number Diff line number Diff line change
Expand Up @@ -79,13 +79,7 @@ var _ json.Unmarshaler = (*UntrustedSigstorePayload)(nil)

// UnmarshalJSON implements the json.Unmarshaler interface
func (s *UntrustedSigstorePayload) UnmarshalJSON(data []byte) error {
err := s.strictUnmarshalJSON(data)
if err != nil {
if formatErr, ok := err.(JSONFormatError); ok {
err = NewInvalidSignatureError(formatErr.Error())
}
}
return err
return JSONFormatToInvalidSignatureError(s.strictUnmarshalJSON(data))
}

// strictUnmarshalJSON is UnmarshalJSON, except that it may return the internal JSONFormatError error type.
Expand Down Expand Up @@ -126,7 +120,7 @@ func (s *UntrustedSigstorePayload) strictUnmarshalJSON(data []byte) error {
if gotTimestamp {
intTimestamp := int64(timestamp)
if float64(intTimestamp) != timestamp {
return NewInvalidSignatureError("Field optional.timestamp is not is not an integer")
return NewInvalidSignatureError("Field optional.timestamp is not an integer")
}
s.untrustedTimestamp = &intTimestamp
}
Expand Down
10 changes: 2 additions & 8 deletions signature/simple.go
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Original file line number Diff line number Diff line change
Expand Up @@ -105,13 +105,7 @@ var _ json.Unmarshaler = (*untrustedSignature)(nil)

// UnmarshalJSON implements the json.Unmarshaler interface
func (s *untrustedSignature) UnmarshalJSON(data []byte) error {
err := s.strictUnmarshalJSON(data)
if err != nil {
if formatErr, ok := err.(internal.JSONFormatError); ok {
err = internal.NewInvalidSignatureError(formatErr.Error())
}
}
return err
return internal.JSONFormatToInvalidSignatureError(s.strictUnmarshalJSON(data))
}

// strictUnmarshalJSON is UnmarshalJSON, except that it may return the internal.JSONFormatError error type.
Expand Down Expand Up @@ -149,7 +143,7 @@ func (s *untrustedSignature) strictUnmarshalJSON(data []byte) error {
if gotTimestamp {
intTimestamp := int64(timestamp)
if float64(intTimestamp) != timestamp {
return internal.NewInvalidSignatureError("Field optional.timestamp is not is not an integer")
return internal.NewInvalidSignatureError("Field optional.timestamp is not an integer")
}
s.untrustedTimestamp = &intTimestamp
}
Expand Down