From e389ca7469162728c37a9d9c7b2ce6cf11c8910e Mon Sep 17 00:00:00 2001
From: falkTX <falktx@falktx.com>
Date: Sat, 9 Jul 2022 00:00:49 +0100
Subject: [PATCH] Workaround for wrong file permissions from zstd extraction on
 wasm

Signed-off-by: falkTX <falktx@falktx.com>
---
 include/common.hpp      | 13 +++++++++++++
 src/override/common.cpp | 11 ++++++++++-
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/include/common.hpp b/include/common.hpp
index 327acb4..94102b0 100644
--- a/include/common.hpp
+++ b/include/common.hpp
@@ -30,6 +30,19 @@
 
 #include_next "common.hpp"
 
+// Workaround for wrong file permissions from zstd extraction
+#ifdef __EMSCRIPTEN__
+#define fopen fopen_wasm
+
+extern "C" {
+FILE* fopen_wasm(const char* filename, const char* mode);
+}
+
+namespace std {
+	using ::fopen_wasm;
+}
+#endif
+
 // Make binary resources work the same no matter the OS
 #undef BINARY
 #undef BINARY_START
diff --git a/src/override/common.cpp b/src/override/common.cpp
index 7bd8b0e..191914e 100644
--- a/src/override/common.cpp
+++ b/src/override/common.cpp
@@ -34,7 +34,7 @@
 
 #include "DistrhoPluginUtils.hpp"
 
-#if defined ARCH_WIN
+#if defined(ARCH_WIN)
 #include <windows.h>
 
 FILE* fopen_u8(const char* filename, const char* mode) {
@@ -43,6 +43,15 @@ FILE* fopen_u8(const char* filename, const char* mode) {
 	return _wfopen(rack::string::UTF8toUTF16(filename).c_str(), rack::string::UTF8toUTF16(mode).c_str());
 }
 
+#elif defined(DISTRHO_OS_WASM)
+#include <sys/stat.h>
+#undef fopen
+
+FILE* fopen_wasm(const char* filename, const char* mode) {
+	chmod(filename, 0777);
+	return std::fopen(filename, mode);
+}
+
 #endif