From 413e4bf67a3100baa3723d1372a09cd36ff47c72 Mon Sep 17 00:00:00 2001
From: jvoisin
Date: Thu, 9 Aug 2018 16:03:55 +0200
Subject: Yet an other crash/hang fix

Like the two previous commits
---
 src/sp_upload_validation.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

(limited to 'src/sp_upload_validation.c')

diff --git a/src/sp_upload_validation.c b/src/sp_upload_validation.c
index 794c61f..a8a1340 100644
--- a/src/sp_upload_validation.c
+++ b/src/sp_upload_validation.c
@@ -3,16 +3,15 @@
 
 ZEND_DECLARE_MODULE_GLOBALS(snuffleupagus)
 
+int (*sp_rfc1867_orig_callback)(unsigned int event, void *event_data,
+                                void **extra);
+int sp_rfc1867_callback(unsigned int event, void *event_data, void **extra);
+
 #define EFREE_3(env)               \
   for (size_t i = 0; i < 4; i++) { \
     efree(env[i]);                 \
   }
 
-void hook_upload() {
-  sp_rfc1867_orig_callback = php_rfc1867_callback;
-  php_rfc1867_callback = sp_rfc1867_callback;
-}
-
 int sp_rfc1867_callback(unsigned int event, void *event_data, void **extra) {
   int retval = SUCCESS;
 
@@ -99,3 +98,10 @@ int sp_rfc1867_callback(unsigned int event, void *event_data, void **extra) {
   }
   return retval;
 }
+
+void hook_upload() {
+  if (NULL == sp_rfc1867_orig_callback) {
+    sp_rfc1867_orig_callback = php_rfc1867_callback;
+    php_rfc1867_callback = sp_rfc1867_callback;
+  }
+}
-- 
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