From 33a1e905113f05c3c1eec3b75e0727ca81a551b1 Mon Sep 17 00:00:00 2001
From: Diana Ren <diren@microsoft.com>
Date: Tue, 2 Apr 2019 16:49:14 -0700
Subject: [PATCH] client: opesssl: also check wsi for NULL on non-error path
same change as a58b389 in other code path - check wsi before
accessing and return 0 (not ok) if null
---
lib/client/ssl-client.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/lib/client/ssl-client.c b/lib/client/ssl-client.c
index cad1d9aa..1d40c504 100644
--- a/lib/client/ssl-client.c
+++ b/lib/client/ssl-client.c
@@ -77,6 +77,10 @@ OpenSSL_client_verify_callback(int preverify_ok, X509_STORE_CTX *x509_ctx)
ssl = X509_STORE_CTX_get_ex_data(x509_ctx, SSL_get_ex_data_X509_STORE_CTX_idx());
wsi = SSL_get_ex_data(ssl, openssl_websocket_private_data_index);
+ if (!wsi) {
+ lwsl_err("can't retrieve wsi from ssl private data");
+ return 0;
+ }
n = lws_get_context_protocol(wsi->context, 0).callback(wsi,
LWS_CALLBACK_OPENSSL_PERFORM_SERVER_CERT_VERIFICATION,
--
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