oauth2: clarify error if endpoint missing DeviceAuthURL

Change-Id: I36eb5eb66099161785160f4f39ea1c7f64ad6e74 GitHub-Last-Rev: 31cfe81 GitHub-Pull-Request: #664 Reviewed-on: https://go-review.googlesource.com/c/oauth2/+/526302 Reviewed-by: Matthew Dempsky <[email protected]> LUCI-TryBot-Result: Go LUCI <[email protected]> Auto-Submit: Bryan Mills <[email protected]> Reviewed-by: Bryan Mills <[email protected]>
golang · Sep 22, 2023 · 9095a51 · 9095a51
1 parent 2d9e4a2
commit 9095a51
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/deviceauth.go b/deviceauth.go
@@ -3,6 +3,7 @@ package oauth2
 import (
 	"context"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"io"
 	"net/http"
@@ -88,6 +89,10 @@ func (c *Config) DeviceAuth(ctx context.Context, opts ...AuthCodeOption) (*Devic
 }
 
 func retrieveDeviceAuth(ctx context.Context, c *Config, v url.Values) (*DeviceAuthResponse, error) {
+	if c.Endpoint.DeviceAuthURL == "" {
+		return nil, errors.New("endpoint missing DeviceAuthURL")
+	}
+
 	req, err := http.NewRequest("POST", c.Endpoint.DeviceAuthURL, strings.NewReader(v.Encode()))
 	if err != nil {
 		return nil, err