Feat: get permanent URL for OneDrive policy

pkg/filesystem/driver/onedrive/handler.go

@@ -12,6 +12,7 @@ import (
 	"time"
 
 	model "github.com/cloudreve/Cloudreve/v3/models"
+	"github.com/cloudreve/Cloudreve/v3/pkg/auth"
 	"github.com/cloudreve/Cloudreve/v3/pkg/cache"
 	"github.com/cloudreve/Cloudreve/v3/pkg/filesystem/fsctx"
 	"github.com/cloudreve/Cloudreve/v3/pkg/filesystem/response"
@@ -155,6 +156,19 @@ func (handler Driver) Source(
 	cacheKey := fmt.Sprintf("onedrive_source_%d_%s", handler.Policy.ID, path)
 	if file, ok := ctx.Value(fsctx.FileModelCtx).(model.File); ok {
 		cacheKey = fmt.Sprintf("onedrive_source_file_%d_%d", file.UpdatedAt.Unix(), file.ID)
+		// 如果是永久链接，则返回签名后的中转外链
+		if ttl == 0 {
+			signedURI, err := auth.SignURI(
+				auth.General,
+				fmt.Sprintf("/api/v3/file/source/%d/%s", file.ID, file.Name),
+				ttl,
+			)
+			if err != nil {
+				return "", err
+			}
+			return baseURL.ResolveReference(signedURI).String(), nil
+		}
+
 	}
 
 	// 尝试从缓存中查找