package api import ( "encoding/json" "fmt" "net/http" "os" "github.com/pkg/errors" "github.com/smallstep/certificates/acme" "github.com/smallstep/certificates/errs" "github.com/smallstep/certificates/logging" ) // WriteError writes to w a JSON representation of the given error. func WriteError(w http.ResponseWriter, err error) { switch err.(type) { case *acme.Error: w.Header().Set("Content-Type", "application/problem+json") default: w.Header().Set("Content-Type", "application/json") } cause := errors.Cause(err) if sc, ok := err.(errs.StatusCoder); ok { w.WriteHeader(sc.StatusCode()) } else { if sc, ok := cause.(errs.StatusCoder); ok { w.WriteHeader(sc.StatusCode()) } else { w.WriteHeader(http.StatusInternalServerError) } } // Write errors in the response writer if rl, ok := w.(logging.ResponseLogger); ok { rl.WithFields(map[string]interface{}{ "error": err, }) if os.Getenv("STEPDEBUG") == "1" { if e, ok := err.(errs.StackTracer); ok { rl.WithFields(map[string]interface{}{ "stack-trace": fmt.Sprintf("%+v", e), }) } else { if e, ok := cause.(errs.StackTracer); ok { rl.WithFields(map[string]interface{}{ "stack-trace": fmt.Sprintf("%+v", e), }) } } } } if err := json.NewEncoder(w).Encode(err); err != nil { LogError(w, err) } }