From: Dmitry Belyavskiy <beldmit@gmail.com>
Date: Sun, 7 Jul 2019 13:42:46 +0000 (+0300)
Subject: Avoid memory leaks
X-Git-Url: http://wagner.pp.ru/gitweb/?a=commitdiff_plain;h=7e94620db548fa4810797e9237d3722e0b1861ab;p=openssl-gost%2Fengine.git

Avoid memory leaks

Fixes #149.
---

diff --git a/gost_eng.c b/gost_eng.c
index 9e77e5d..a1dcd79 100644
--- a/gost_eng.c
+++ b/gost_eng.c
@@ -112,6 +112,7 @@ 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 92be991..cc59daf 100644
--- a/gost_grasshopper_cipher.c
+++ b/gost_grasshopper_cipher.c
@@ -624,6 +624,19 @@ 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 3a8531f..2aae662 100644
--- a/gost_grasshopper_cipher.h
+++ b/gost_grasshopper_cipher.h
@@ -98,6 +98,7 @@ 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