crypto: add reload for QCryptoTLSCredsClass

This patch adds reload interface for QCryptoTLSCredsClass and implements
the interface for QCryptoTLSCredsX509.

Signed-off-by: Zihao Chang <changzihao1@huawei.com>
Acked-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20210316075845.1476-2-changzihao1@huawei.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

2 files changed, 53 insertions, 3 deletions

diff --git a/crypto/tlscredsx509.c b/crypto/tlscredsx509.c
index dbadad4df2..bc503bab55 100644
--- a/crypto/tlscredsx509.c
+++ b/crypto/tlscredsx509.c
@@ -770,6 +770,51 @@ qcrypto_tls_creds_x509_prop_get_sanity(Object *obj,
 }
 
 
+#ifdef CONFIG_GNUTLS
+
+
+static bool
+qcrypto_tls_creds_x509_reload(QCryptoTLSCreds *creds, Error **errp)
+{
+    QCryptoTLSCredsX509 *x509_creds = QCRYPTO_TLS_CREDS_X509(creds);
+    Error *local_err = NULL;
+    gnutls_certificate_credentials_t creds_data = x509_creds->data;
+    gnutls_dh_params_t creds_dh_params = x509_creds->parent_obj.dh_params;
+
+    x509_creds->data = NULL;
+    x509_creds->parent_obj.dh_params = NULL;
+    qcrypto_tls_creds_x509_load(x509_creds, &local_err);
+    if (local_err) {
+        qcrypto_tls_creds_x509_unload(x509_creds);
+        x509_creds->data = creds_data;
+        x509_creds->parent_obj.dh_params = creds_dh_params;
+        error_propagate(errp, local_err);
+        return false;
+    }
+
+    if (creds_data) {
+        gnutls_certificate_free_credentials(creds_data);
+    }
+    if (creds_dh_params) {
+        gnutls_dh_params_deinit(creds_dh_params);
+    }
+    return true;
+}
+
+
+#else /* ! CONFIG_GNUTLS */
+
+
+static bool
+qcrypto_tls_creds_x509_reload(QCryptoTLSCreds *creds, Error **errp)
+{
+    return false;
+}
+
+
+#endif /* ! CONFIG_GNUTLS */
+
+
 static void
 qcrypto_tls_creds_x509_complete(UserCreatable *uc, Error **errp)
 {
@@ -800,6 +845,9 @@ static void
 qcrypto_tls_creds_x509_class_init(ObjectClass *oc, void *data)
 {
     UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);
+    QCryptoTLSCredsClass *ctcc = QCRYPTO_TLS_CREDS_CLASS(oc);
+
+    ctcc->reload = qcrypto_tls_creds_x509_reload;
 
     ucc->complete = qcrypto_tls_creds_x509_complete;
 
diff --git a/include/crypto/tlscreds.h b/include/crypto/tlscreds.h
index 079e376047..d0808e391e 100644
--- a/include/crypto/tlscreds.h
+++ b/include/crypto/tlscreds.h
@@ -30,14 +30,15 @@
 
 #define TYPE_QCRYPTO_TLS_CREDS "tls-creds"
 typedef struct QCryptoTLSCreds QCryptoTLSCreds;
-DECLARE_INSTANCE_CHECKER(QCryptoTLSCreds, QCRYPTO_TLS_CREDS,
-                         TYPE_QCRYPTO_TLS_CREDS)
-
 typedef struct QCryptoTLSCredsClass QCryptoTLSCredsClass;
+DECLARE_OBJ_CHECKERS(QCryptoTLSCreds, QCryptoTLSCredsClass, QCRYPTO_TLS_CREDS,
+                     TYPE_QCRYPTO_TLS_CREDS)
+
 
 #define QCRYPTO_TLS_CREDS_DH_PARAMS "dh-params.pem"
 
 
+typedef bool (*CryptoTLSCredsReload)(QCryptoTLSCreds *, Error **);
 /**
  * QCryptoTLSCreds:
  *
@@ -61,6 +62,7 @@ struct QCryptoTLSCreds {
 
 struct QCryptoTLSCredsClass {
     ObjectClass parent_class;
+    CryptoTLSCredsReload reload;
 };