Remove hardcoded refs from ociartifact code

Fixes: https://issues.redhat.com/browse/RUN-3578

Signed-off-by: Nicola Sella <nsella@redhat.com>

vendor/golang.org/x/oauth2/deviceauth.go

@@ -6,6 +6,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"mime"
 	"net/http"
 	"net/url"
 	"strings"
@@ -116,10 +117,38 @@ func retrieveDeviceAuth(ctx context.Context, c *Config, v url.Values) (*DeviceAu
 		return nil, fmt.Errorf("oauth2: cannot auth device: %v", err)
 	}
 	if code := r.StatusCode; code < 200 || code > 299 {
-		return nil, &RetrieveError{
+		retrieveError := &RetrieveError{
 			Response: r,
 			Body:     body,
 		}
+
+		content, _, _ := mime.ParseMediaType(r.Header.Get("Content-Type"))
+		switch content {
+		case "application/x-www-form-urlencoded", "text/plain":
+			// some endpoints return a query string
+			vals, err := url.ParseQuery(string(body))
+			if err != nil {
+				return nil, retrieveError
+			}
+			retrieveError.ErrorCode = vals.Get("error")
+			retrieveError.ErrorDescription = vals.Get("error_description")
+			retrieveError.ErrorURI = vals.Get("error_uri")
+		default:
+			var tj struct {
+				// https://datatracker.ietf.org/doc/html/rfc6749#section-5.2
+				ErrorCode        string `json:"error"`
+				ErrorDescription string `json:"error_description"`
+				ErrorURI         string `json:"error_uri"`
+			}
+			if json.Unmarshal(body, &tj) != nil {
+				return nil, retrieveError
+			}
+			retrieveError.ErrorCode = tj.ErrorCode
+			retrieveError.ErrorDescription = tj.ErrorDescription
+			retrieveError.ErrorURI = tj.ErrorURI
+		}
+
+		return nil, retrieveError
 	}
 
 	da := &DeviceAuthResponse{}

vendor/golang.org/x/oauth2/oauth2.go

@@ -98,7 +98,7 @@ const (
 	// in the POST body as application/x-www-form-urlencoded parameters.
 	AuthStyleInParams AuthStyle = 1
 
-	// AuthStyleInHeader sends the client_id and client_password
+	// AuthStyleInHeader sends the client_id and client_secret
 	// using HTTP Basic Authorization. This is an optional style
 	// described in the OAuth2 RFC 6749 section 2.3.1.
 	AuthStyleInHeader AuthStyle = 2

vendor/golang.org/x/oauth2/pkce.go

@@ -51,7 +51,7 @@ func S256ChallengeFromVerifier(verifier string) string {
 	return base64.RawURLEncoding.EncodeToString(sha[:])
 }
 
-// S256ChallengeOption derives a PKCE code challenge derived from verifier with
+// S256ChallengeOption derives a PKCE code challenge from the verifier with
 // method S256. It should be passed to [Config.AuthCodeURL] or [Config.DeviceAuth]
 // only.
 func S256ChallengeOption(verifier string) AuthCodeOption {

vendor/golang.org/x/oauth2/token.go

@@ -103,7 +103,7 @@ func (t *Token) WithExtra(extra any) *Token {
 }
 
 // Extra returns an extra field.
-// Extra fields are key-value pairs returned by the server as a
+// Extra fields are key-value pairs returned by the server as
 // part of the token retrieval response.
 func (t *Token) Extra(key string) any {
 	if raw, ok := t.raw.(map[string]any); ok {

vendor/golang.org/x/oauth2/transport.go

@@ -58,7 +58,7 @@ func (t *Transport) RoundTrip(req *http.Request) (*http.Response, error) {
 var cancelOnce sync.Once
 
 // CancelRequest does nothing. It used to be a legacy cancellation mechanism
-// but now only it only logs on first use to warn that it's deprecated.
+// but now only logs on first use to warn that it's deprecated.
 //
 // Deprecated: use contexts for cancellation instead.
 func (t *Transport) CancelRequest(req *http.Request) {