From 85217f4c0d10b1ed13f47b2535dbc46de5669d2d Mon Sep 17 00:00:00 2001
From: Daryl Borth <dborth@gmail.com>
Date: Mon, 27 Aug 2018 09:34:42 -0600
Subject: [PATCH] prevent overrunning the file buffer (eg: loading a game cover
 image that's too big). increase buffer size to load larger IPS/UPS files.

---
 source/fileop.cpp | 12 ++++++++++++
 source/fileop.h   |  2 +-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/source/fileop.cpp b/source/fileop.cpp
index da04a88..d80c7bf 100644
--- a/source/fileop.cpp
+++ b/source/fileop.cpp
@@ -871,6 +871,18 @@ LoadFile (char * rbuffer, char *filepath, size_t length, bool silent)
 
 size_t LoadFile(char * filepath, bool silent)
 {
+	struct stat filestat;
+
+	if(stat(filepath, &filestat) != 0) {
+		return 0;
+	}
+
+	int size = filestat.st_size;
+
+	if(size >= SAVEBUFFERSIZE) {
+		return 0;
+	}
+
 	return LoadFile((char *)savebuffer, filepath, 0, silent);
 }
 
diff --git a/source/fileop.h b/source/fileop.h
index 9ff49d3..569200f 100644
--- a/source/fileop.h
+++ b/source/fileop.h
@@ -18,7 +18,7 @@
 #include <fat.h>
 #include <unistd.h>
 
-#define SAVEBUFFERSIZE (1024 * 512)
+#define SAVEBUFFERSIZE (1024 * 1024 * 2) // leave room for IPS/UPS files and larger images
 
 void InitDeviceThread();
 void ResumeDeviceThread();