From 295901c0b3b215837855428d8361f84ca7e5ebe0 Mon Sep 17 00:00:00 2001
From: Pierre-Olivier Latour <pol@mac.com>
Date: Wed, 30 Apr 2014 09:57:12 -0700
Subject: [PATCH] Reject files greater than 4 GiB in 32 bit mode

---
 GCDWebServer/Responses/GCDWebServerFileResponse.m | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/GCDWebServer/Responses/GCDWebServerFileResponse.m b/GCDWebServer/Responses/GCDWebServerFileResponse.m
index acf7bd0..a2e0355 100644
--- a/GCDWebServer/Responses/GCDWebServerFileResponse.m
+++ b/GCDWebServer/Responses/GCDWebServerFileResponse.m
@@ -81,6 +81,13 @@ static inline NSDate* _NSDateFromTimeSpec(const struct timespec* t) {
     ARC_RELEASE(self);
     return nil;
   }
+#ifndef __LP64__
+  if (info.st_size >= (off_t)4294967295) {  // In 32 bit mode, we can't handle files greater than 4 GiBs (don't use "NSUIntegerMax" here to avoid potential unsigned to signed conversion issues)
+    DNOT_REACHED();
+    ARC_RELEASE(self);
+    return nil;
+  }
+#endif
   NSUInteger fileSize = (NSUInteger)info.st_size;
   
   BOOL hasByteRange = GCDWebServerIsValidByteRange(range);