fix memory leaks

Signed-off-by: Sergei Ianovich <s@elektroplus.ru>

Author: Sergei Ianovich

gost_eng.c

@@ -297,6 +297,8 @@ static int gost_engine_finish(ENGINE* e) {
     return 1;
 }
 
+static void free_NIDs();
+
 static int gost_engine_destroy(ENGINE* e) {
     int i;
 
@@ -314,6 +316,7 @@ static int gost_engine_destroy(ENGINE* e) {
     }
 
     free_cached_groups();
+    free_NIDs();
 
 # ifndef BUILDING_GOST_PROVIDER
     ERR_unload_GOST_strings();
@@ -339,6 +342,7 @@ static int create_NIDs() {
         GOST_NID_JOB *job = missing_NIDs[i];
         ASN1_OBJECT *obj =
             ASN1_OBJECT_create(new_nid + i, NULL, 0, job->sn, job->ln);
+        job->asn1 = obj;
         if (!obj || OBJ_add_object(obj) == NID_undef) {
             OPENSSL_free(obj);
             fprintf(stderr, "failed NID for %s\n", job->sn);
@@ -349,6 +353,13 @@ static int create_NIDs() {
     return 1;
 }
 
+static void free_NIDs() {
+    int i;
+    for (i = 0; i < OSSL_NELEM(missing_NIDs); i++) {
+        ASN1_OBJECT_free(missing_NIDs[i]->asn1);
+    }
+}
+
 # ifndef BUILDING_GOST_PROVIDER
 static
 # endif

gost_lcl.h

@@ -408,6 +408,7 @@ struct gost_nid_job {
     const char *sn;
     const char *ln;
     void (*callback)(int nid);
+    ASN1_OBJECT *asn1;
 };
 
 typedef struct gost_nid_job GOST_NID_JOB;

test_mgm.c

@@ -243,7 +243,7 @@ int main(void)
 
     for (t = testcases; t->sn; t++) {
         int small;
-        const EVP_CIPHER *ciph = EVP_get_cipherbyname(t->sn);
+        EVP_CIPHER *ciph = (EVP_CIPHER *) EVP_get_cipherbyname(t->sn);
         const char *name;
         if (!ciph) {
             ciph = EVP_CIPHER_fetch(NULL, t->sn, NULL);
@@ -259,6 +259,7 @@ int main(void)
             ret |= test_block(ciph, name, t->nonce, t->nonce_len,
                               t->aad, t->aad_len, t->plaintext, t->ptext_len,
                               t->expected, t->expected_tag, t->key, small);
+	EVP_CIPHER_free(ciph);
     }
 
     if (ret) {