crypto/secret: move main logic from 'secret' to 'secret_common'.

Create base class 'common secret'. Move common data and logic from
'secret' to 'common_secret' class. This allowed adding abstraction layer
for easier adding new 'secret' objects in future.
Convert 'secret' class to child from basic 'secret_common' with 'data'
and 'file' properties.

Signed-off-by: Alexey Krasikov <alex-krasikov@yandex-team.ru>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>

2 files changed, 71 insertions, 17 deletions

diff --git a/include/crypto/secret.h b/include/crypto/secret.h
index 5e07e29..2deb461 100644
--- a/include/crypto/secret.h
+++ b/include/crypto/secret.h
@@ -23,6 +23,7 @@
 
 #include "qapi/qapi-types-crypto.h"
 #include "qom/object.h"
+#include "crypto/secret_common.h"
 
 #define TYPE_QCRYPTO_SECRET "secret"
 #define QCRYPTO_SECRET(obj)                  \
@@ -119,29 +120,14 @@ typedef struct QCryptoSecretClass QCryptoSecretClass;
  */
 
 struct QCryptoSecret {
-    Object parent_obj;
-    uint8_t *rawdata;
-    size_t rawlen;
-    QCryptoSecretFormat format;
+    QCryptoSecretCommon parent_obj;
     char *data;
     char *file;
-    char *keyid;
-    char *iv;
 };
 
 
 struct QCryptoSecretClass {
-    ObjectClass parent_class;
+    QCryptoSecretCommonClass parent_class;
 };
 
-
-extern int qcrypto_secret_lookup(const char *secretid,
-                                 uint8_t **data,
-                                 size_t *datalen,
-                                 Error **errp);
-extern char *qcrypto_secret_lookup_as_utf8(const char *secretid,
-                                           Error **errp);
-extern char *qcrypto_secret_lookup_as_base64(const char *secretid,
-                                             Error **errp);
-
 #endif /* QCRYPTO_SECRET_H */
diff --git a/include/crypto/secret_common.h b/include/crypto/secret_common.h
new file mode 100644
index 0000000..980c02a
--- /dev/null
+++ b/include/crypto/secret_common.h
@@ -0,0 +1,68 @@
+/*
+ * QEMU crypto secret support
+ *
+ * Copyright (c) 2015 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef QCRYPTO_SECRET_COMMON_H
+#define QCRYPTO_SECRET_COMMON_H
+
+#include "qapi/qapi-types-crypto.h"
+#include "qom/object.h"
+
+#define TYPE_QCRYPTO_SECRET_COMMON "secret_common"
+#define QCRYPTO_SECRET_COMMON(obj) \
+    OBJECT_CHECK(QCryptoSecretCommon, (obj), TYPE_QCRYPTO_SECRET_COMMON)
+#define QCRYPTO_SECRET_COMMON_CLASS(class) \
+    OBJECT_CLASS_CHECK(QCryptoSecretCommonClass, \
+                       (class), TYPE_QCRYPTO_SECRET_COMMON)
+#define QCRYPTO_SECRET_COMMON_GET_CLASS(obj) \
+    OBJECT_GET_CLASS(QCryptoSecretCommonClass, \
+                     (obj), TYPE_QCRYPTO_SECRET_COMMON)
+
+typedef struct QCryptoSecretCommon QCryptoSecretCommon;
+typedef struct QCryptoSecretCommonClass QCryptoSecretCommonClass;
+
+struct QCryptoSecretCommon {
+    Object parent_obj;
+    uint8_t *rawdata;
+    size_t rawlen;
+    QCryptoSecretFormat format;
+    char *keyid;
+    char *iv;
+};
+
+
+struct QCryptoSecretCommonClass {
+    ObjectClass parent_class;
+    void (*load_data)(QCryptoSecretCommon *secret,
+                      uint8_t **output,
+                      size_t *outputlen,
+                      Error **errp);
+};
+
+
+extern int qcrypto_secret_lookup(const char *secretid,
+                                 uint8_t **data,
+                                 size_t *datalen,
+                                 Error **errp);
+extern char *qcrypto_secret_lookup_as_utf8(const char *secretid,
+                                           Error **errp);
+extern char *qcrypto_secret_lookup_as_base64(const char *secretid,
+                                             Error **errp);
+
+#endif /* QCRYPTO_SECRET_COMMON_H */