增加对referer的访问白名单

redirect.lua

@@ -12,12 +12,14 @@ function _ReM.checkgoogle(red)
 				ngx.var.host .. ':' .. ngx.var.server_port .. ngx.var.request_uri)
     dest = 'http://passport.ichunt.com/static/login.html' .. '?continue=' .. source_url
     
-    if ngx.req.get_headers()['referer'] == nil then
-        ngx.req.get_headers()['referer'] = ""
-    end
 
     --新增如果refer不在对应的设置里面，才计算302重定向次数  get_headers里面就是浏览器的请求头小写
-    if red:sismember('ichunt_waf_white_referer', ngx.req.get_headers()['referer']) == 0 then
+    local referer = ""
+    if ngx.req.get_headers()['referer'] ~= nil then
+        referer = ngx.req.get_headers()['referer']
+    end
+
+    if red:sismember('ichunt_waf_white_referer', referer) == 0 then
 
         --获取多少时间内同一个ip可以几次302，超过就加入黑名单
         threezerotwo_second , err = red:get('threezerotwo_second')