lego/acme/error.go
2018-05-30 19:53:04 +02:00

91 lines
2.2 KiB
Go

package acme
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"strings"
)
const (
tosAgreementError = "Terms of service have changed"
invalidNonceError = "urn:ietf:params:acme:error:badNonce"
)
// RemoteError is the base type for all errors specific to the ACME protocol.
type RemoteError struct {
StatusCode int `json:"status,omitempty"`
Type string `json:"type"`
Detail string `json:"detail"`
}
func (e RemoteError) Error() string {
return fmt.Sprintf("acme: Error %d - %s - %s", e.StatusCode, e.Type, e.Detail)
}
// TOSError represents the error which is returned if the user needs to
// accept the TOS.
// TODO: include the new TOS url if we can somehow obtain it.
type TOSError struct {
RemoteError
}
// NonceError represents the error which is returned if the
// nonce sent by the client was not accepted by the server.
type NonceError struct {
RemoteError
}
type domainError struct {
Domain string
Error error
}
// ObtainError is returned when there are specific errors available
// per domain. For example in ObtainCertificate
type ObtainError map[string]error
func (e ObtainError) Error() string {
buffer := bytes.NewBufferString("acme: Error -> One or more domains had a problem:\n")
for dom, err := range e {
buffer.WriteString(fmt.Sprintf("[%s] %s\n", dom, err))
}
return buffer.String()
}
func handleHTTPError(resp *http.Response) error {
var errorDetail RemoteError
contentType := resp.Header.Get("Content-Type")
if contentType == "application/json" || strings.HasPrefix(contentType, "application/problem+json") {
err := json.NewDecoder(resp.Body).Decode(&errorDetail)
if err != nil {
return err
}
} else {
detailBytes, err := ioutil.ReadAll(limitReader(resp.Body, maxBodySize))
if err != nil {
return err
}
errorDetail.Detail = string(detailBytes)
}
errorDetail.StatusCode = resp.StatusCode
// Check for errors we handle specifically
if errorDetail.StatusCode == http.StatusForbidden && errorDetail.Detail == tosAgreementError {
return TOSError{errorDetail}
}
if errorDetail.StatusCode == http.StatusBadRequest && errorDetail.Type == invalidNonceError {
return NonceError{errorDetail}
}
return errorDetail
}
func handleChallengeError(chlng challenge) error {
return chlng.Error
}