Case-insensitive NuGet symbol file GUID (#21409)

NuGet symbol file lookup returned 404 on Visual Studio 2019 due to
case-sensitive api router. The api router should accept case-insensitive GUID.

Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

routers/api/packages/api.go

@@ -196,7 +196,7 @@ func Routes(ctx gocontext.Context) *web.Route {
 					r.Put("/symbolpackage", nuget.UploadSymbolPackage)
 					r.Delete("/{id}/{version}", nuget.DeletePackage)
 				}, reqPackageAccess(perm.AccessModeWrite))
-				r.Get("/symbols/{filename}/{guid:[0-9a-f]{32}}FFFFFFFF/{filename2}", nuget.DownloadSymbolFile)
+				r.Get("/symbols/{filename}/{guid:[0-9a-fA-F]{32}[fF]{8}}/{filename2}", nuget.DownloadSymbolFile)
 			}, reqPackageAccess(perm.AccessModeRead))
 		})
 		r.Group("/npm", func() {

routers/api/packages/nuget/nuget.go

@@ -353,7 +353,7 @@ func processUploadedFile(ctx *context.Context, expectedType nuget_module.Package
 // DownloadSymbolFile https://github.com/dotnet/symstore/blob/main/docs/specs/Simple_Symbol_Query_Protocol.md#request
 func DownloadSymbolFile(ctx *context.Context) {
 	filename := ctx.Params("filename")
-	guid := ctx.Params("guid")
+	guid := ctx.Params("guid")[:32]
 	filename2 := ctx.Params("filename2")
 
 	if filename != filename2 {

tests/integration/api_packages_nuget_test.go

@@ -280,7 +280,7 @@ AAAjQmxvYgAAAGm7ENm9SGxMtAFVvPUsPJTF6PbtAAAAAFcVogEJAAAAAQAAAA==`)
 			req = AddBasicAuthHeader(req, user.Name)
 			MakeRequest(t, req, http.StatusNotFound)
 
-			req = NewRequest(t, "GET", fmt.Sprintf("%s/symbols/%s/%sFFFFFFFF/%s", url, symbolFilename, symbolID, symbolFilename))
+			req = NewRequest(t, "GET", fmt.Sprintf("%s/symbols/%s/%sFFFFffff/%s", url, symbolFilename, symbolID, symbolFilename))
 			req = AddBasicAuthHeader(req, user.Name)
 			MakeRequest(t, req, http.StatusOK)