fix(net): unable to pass HttpStatusCode (#1397)

Author: j2rong4cn

internal/errs/unwrap.go

@@ -0,0 +1,12 @@
+package errs
+
+import "errors"
+
+func UnwrapOrSelf(err error) error {
+	// errors.Unwrap has no fallback mechanism
+	unwrapped := errors.Unwrap(err)
+	if unwrapped == nil {
+		return err
+	}
+	return unwrapped
+}

internal/net/serve.go

@@ -14,6 +14,7 @@ import (
 	"time"
 
 	"github.com/OpenListTeam/OpenList/v4/internal/conf"
+	"github.com/OpenListTeam/OpenList/v4/internal/errs"
 	"github.com/OpenListTeam/OpenList/v4/internal/model"
 	"github.com/OpenListTeam/OpenList/v4/pkg/http_range"
 	"github.com/OpenListTeam/OpenList/v4/pkg/utils"
@@ -114,7 +115,7 @@ func ServeHTTP(w http.ResponseWriter, r *http.Request, name string, modTime time
 		reader, err := RangeReadCloser.RangeRead(ctx, http_range.Range{Length: -1})
 		if err != nil {
 			code = http.StatusRequestedRangeNotSatisfiable
-			if statusCode, ok := errors.Unwrap(err).(HttpStatusCodeError); ok {
+			if statusCode, ok := errs.UnwrapOrSelf(err).(HttpStatusCodeError); ok {
 				code = int(statusCode)
 			}
 			http.Error(w, err.Error(), code)
@@ -137,7 +138,7 @@ func ServeHTTP(w http.ResponseWriter, r *http.Request, name string, modTime time
 		sendContent, err = RangeReadCloser.RangeRead(ctx, ra)
 		if err != nil {
 			code = http.StatusRequestedRangeNotSatisfiable
-			if statusCode, ok := errors.Unwrap(err).(HttpStatusCodeError); ok {
+			if statusCode, ok := errs.UnwrapOrSelf(err).(HttpStatusCodeError); ok {
 				code = int(statusCode)
 			}
 			http.Error(w, err.Error(), code)
@@ -199,7 +200,7 @@ func ServeHTTP(w http.ResponseWriter, r *http.Request, name string, modTime time
 				log.Warnf("Maybe size incorrect or reader not giving correct/full data, or connection closed before finish. written bytes: %d ,sendSize:%d, ", written, sendSize)
 			}
 			code = http.StatusInternalServerError
-			if statusCode, ok := errors.Unwrap(err).(HttpStatusCodeError); ok {
+			if statusCode, ok := errs.UnwrapOrSelf(err).(HttpStatusCodeError); ok {
 				code = int(statusCode)
 			}
 			w.WriteHeader(code)