From e3c7c0b482cb31e4bfa741a4446a1dcb64bdf717 Mon Sep 17 00:00:00 2001
From: "Earle F. Philhower, III" <earlephilhower@yahoo.com>
Date: Sun, 10 May 2020 15:09:15 -0700
Subject: [PATCH] Allocate BSSL stack for SigningVerifier
The BearSSL SigningVerifier was moved to the 2nd stack because some uses
required much more stack than available on the normal stack.
Add a reference to the second stack on object creation (which will
allocate it, if there is no BSSL stack already allocated), and delete
that reference on exit.
Fixes #7288
---
libraries/ESP8266WiFi/src/BearSSLHelpers.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/libraries/ESP8266WiFi/src/BearSSLHelpers.h b/libraries/ESP8266WiFi/src/BearSSLHelpers.h
index 282bab9cfb..5c1b67546c 100644
--- a/libraries/ESP8266WiFi/src/BearSSLHelpers.h
+++ b/libraries/ESP8266WiFi/src/BearSSLHelpers.h
@@ -24,6 +24,7 @@
#define _BEARSSLHELPERS_H
#include <bearssl/bearssl.h>
+#include <StackThunk.h>
#include <Updater.h>
// Internal opaque structures, not needed by user applications
@@ -157,7 +158,8 @@ class SigningVerifier : public UpdaterVerifyClass {
virtual bool verify(UpdaterHashClass *hash, const void *signature, uint32_t signatureLen) override;
public:
- SigningVerifier(PublicKey *pubKey) { _pubKey = pubKey; }
+ SigningVerifier(PublicKey *pubKey) { _pubKey = pubKey; stack_thunk_add_ref(); }
+ ~SigningVerifier() { stack_thunk_del_ref(); }
private:
PublicKey *_pubKey;