From f4dc8cbcf9f6127ca143c243f47432933b54e493 Mon Sep 17 00:00:00 2001
From: printempw <h@prinzeugen.net>
Date: Fri, 30 Jun 2017 11:23:26 +0800
Subject: [PATCH] Add detection of directory write permission

---
 app/helpers.php | 11 +++++++++++
 index.php       |  3 ++-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/app/helpers.php b/app/helpers.php
index b73d3572..ca1955e6 100644
--- a/app/helpers.php
+++ b/app/helpers.php
@@ -404,5 +404,16 @@ if (! function_exists('runtime_check')) {
                 );
             }
         }
+
+        foreach (array_get($requirements, 'write_permission', []) as $dir) {
+            $realPath = realpath(__DIR__."/../$dir");
+
+            if (!is_writable($realPath)) {
+                exit(
+                    "[Error] The program lacks write permission to directory $dir <br>".
+                    "[错误] 程序缺少对 $dir 目录的写权限或目录不存在，请手动授权/创建"
+                );
+            }
+        }
     }
 }
diff --git a/index.php b/index.php
index 93e8c448..4c05b3f3 100755
--- a/index.php
+++ b/index.php
@@ -21,7 +21,8 @@ require __DIR__.'/bootstrap/autoload.php';
 
 // check the runtime environment
 runtime_check(array(
-    'extensions' => array('pdo_mysql', 'openssl', 'gd', 'mbstring', 'tokenizer')
+    'extensions' => array('pdo_mysql', 'openssl', 'gd', 'mbstring', 'tokenizer'),
+    'write_permission' => array('storage', 'resources', 'plugins')
 ));
 
 // handle the request