Merge branch 'has_certificate' of https://github.com/Cargo/lua-resty-auto-ssl into Cargo-has_certificate

Author: GUI

lib/resty/auto-ssl.lua

@@ -99,6 +99,11 @@ function _M.challenge_server(self)
   server(self)
 end
 
+function _M.has_certificate(self, domain)
+  local has_certificate = require "resty.auto-ssl.utils.has_certificate"
+  return has_certificate(self, domain)
+end
+
 function _M.hook_server(self)
   local server = require "resty.auto-ssl.servers.hook"
   server(self)

lib/resty/auto-ssl/utils/has_certificate.lua

@@ -0,0 +1,16 @@
+return function(auto_ssl_instance, domain, shmem_only)
+  local shmem = ngx.shared.auto_ssl:get("domain:fullchain_der:" .. domain)
+  if shmem then
+    return true
+  elseif shmem_only then
+    return false
+  end
+
+  local storage = auto_ssl_instance.storage
+  local cert = storage:get_cert(domain)
+  if cert then
+    return true
+  end
+
+  return false
+end