From: Matt Caswell <matt@openssl.org>
Date: Tue, 17 Jul 2018 09:47:08 +0000 (+0100)
Subject: Fix a mem leak
X-Git-Tag: v3.0.0~415^2
X-Git-Url: http://www.wagner.pp.ru/gitweb/?p=openssl-gost%2Fengine.git;a=commitdiff_plain;h=2192b49dfee982638320c52b42298dc540ea3552

Fix a mem leak

Ensure the grasshopper ciphers are destroyed on engine destroy.
---

diff --git a/gost_eng.c b/gost_eng.c
index 16316a1..517a7da 100644
--- a/gost_eng.c
+++ b/gost_eng.c
@@ -110,6 +110,7 @@ static int gost_engine_destroy(ENGINE* e) {
     imit_gost_cp_12_destroy();
 
     cipher_gost_destroy();
+    cipher_gost_grasshopper_destroy();
 
     gost_param_free();
 
diff --git a/gost_grasshopper_cipher.c b/gost_grasshopper_cipher.c
index c797fe1..2cce251 100644
--- a/gost_grasshopper_cipher.c
+++ b/gost_grasshopper_cipher.c
@@ -650,6 +650,20 @@ const GRASSHOPPER_INLINE EVP_CIPHER* cipher_gost_grasshopper_ctr() {
     return cipher_gost_grasshopper(EVP_CIPH_CTR_MODE, GRASSHOPPER_CIPHER_CTR);
 }
 
+void cipher_gost_grasshopper_destroy(void)
+{
+    EVP_CIPHER_meth_free(gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_ECB]);
+    gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_ECB] = NULL;
+    EVP_CIPHER_meth_free(gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_CBC]);
+    gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_CBC] = NULL;
+    EVP_CIPHER_meth_free(gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_OFB]);
+    gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_OFB] = NULL;
+    EVP_CIPHER_meth_free(gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_CFB]);
+    gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_CFB] = NULL;
+    EVP_CIPHER_meth_free(gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_CTR]);
+    gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_CTR] = NULL;
+}
+
 #if defined(__cplusplus)
 }
 #endif
diff --git a/gost_grasshopper_cipher.h b/gost_grasshopper_cipher.h
index edd45a4..08aac05 100644
--- a/gost_grasshopper_cipher.h
+++ b/gost_grasshopper_cipher.h
@@ -100,6 +100,8 @@ extern const EVP_CIPHER* cipher_gost_grasshopper_ofb();
 extern const EVP_CIPHER* cipher_gost_grasshopper_cfb();
 extern const EVP_CIPHER* cipher_gost_grasshopper_ctr();
 
+void cipher_gost_grasshopper_destroy(void);
+
 #if defined(__cplusplus)
 }
 #endif