Escape paths for find file correctly (#30026)

Fix #30020

routers/web/repo/find.go

@@ -7,6 +7,7 @@ import (
 	"net/http"
 
 	"code.gitea.io/gitea/modules/base"
+	"code.gitea.io/gitea/modules/util"
 	"code.gitea.io/gitea/services/context"
 )
 
@@ -17,7 +18,7 @@ const (
 // FindFiles render the page to find repository files
 func FindFiles(ctx *context.Context) {
 	path := ctx.Params("*")
-	ctx.Data["TreeLink"] = ctx.Repo.RepoLink + "/src/" + path
-	ctx.Data["DataLink"] = ctx.Repo.RepoLink + "/tree-list/" + path
+	ctx.Data["TreeLink"] = ctx.Repo.RepoLink + "/src/" + util.PathEscapeSegments(path)
+	ctx.Data["DataLink"] = ctx.Repo.RepoLink + "/tree-list/" + util.PathEscapeSegments(path)
 	ctx.HTML(http.StatusOK, tplFindFiles)
 }