- {
- EVP_PKEY *ret=NULL;
-
- if (key == NULL) goto error;
-
- if (key->pkey != NULL)
- {
- CRYPTO_add(&key->pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
- return key->pkey;
- }
-
- if (key->public_key == NULL) goto error;
-
- if ((ret = EVP_PKEY_new()) == NULL)
- {
- X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE);
- goto error;
- }
-
- if (!EVP_PKEY_set_type(ret, OBJ_obj2nid(key->algor->algorithm)))
- {
- X509err(X509_F_X509_PUBKEY_GET,X509_R_UNSUPPORTED_ALGORITHM);
- goto error;
- }
-
- if (ret->ameth->pub_decode)
- {
- if (!ret->ameth->pub_decode(ret, key))
- {
- X509err(X509_F_X509_PUBKEY_GET,
- X509_R_PUBLIC_KEY_DECODE_ERROR);
- goto error;
- }
- }
- else
- {
- X509err(X509_F_X509_PUBKEY_GET, X509_R_METHOD_NOT_SUPPORTED);
- goto error;
- }
-
- key->pkey = ret;
- CRYPTO_add(&ret->references, 1, CRYPTO_LOCK_EVP_PKEY);
-
- return ret;
-
- error:
- if (ret != NULL)
- EVP_PKEY_free(ret);
- return(NULL);
- }
-
-/* Now two pseudo ASN1 routines that take an EVP_PKEY structure
- * and encode or decode as X509_PUBKEY
+{
+ EVP_PKEY *ret = NULL;
+
+ if (key == NULL)
+ goto error;
+
+ if (key->pkey != NULL) {
+ CRYPTO_add(&key->pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
+ return key->pkey;
+ }
+
+ if (key->public_key == NULL)
+ goto error;
+
+ if ((ret = EVP_PKEY_new()) == NULL) {
+ X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE);
+ goto error;
+ }
+
+ if (!EVP_PKEY_set_type(ret, OBJ_obj2nid(key->algor->algorithm))) {
+ X509err(X509_F_X509_PUBKEY_GET, X509_R_UNSUPPORTED_ALGORITHM);
+ goto error;
+ }
+
+ if (ret->ameth->pub_decode) {
+ if (!ret->ameth->pub_decode(ret, key)) {
+ X509err(X509_F_X509_PUBKEY_GET, X509_R_PUBLIC_KEY_DECODE_ERROR);
+ goto error;
+ }
+ } else {
+ X509err(X509_F_X509_PUBKEY_GET, X509_R_METHOD_NOT_SUPPORTED);
+ goto error;
+ }
+
+ /* Check to see if another thread set key->pkey first */
+ CRYPTO_w_lock(CRYPTO_LOCK_EVP_PKEY);
+ if (key->pkey) {
+ CRYPTO_w_unlock(CRYPTO_LOCK_EVP_PKEY);
+ EVP_PKEY_free(ret);
+ ret = key->pkey;
+ } else {
+ key->pkey = ret;
+ CRYPTO_w_unlock(CRYPTO_LOCK_EVP_PKEY);
+ }
+ CRYPTO_add(&ret->references, 1, CRYPTO_LOCK_EVP_PKEY);
+
+ return ret;
+
+ error:
+ EVP_PKEY_free(ret);
+ return (NULL);
+}
+
+/*
+ * Now two pseudo ASN1 routines that take an EVP_PKEY structure and encode or
+ * decode as X509_PUBKEY