Imported Upstream version 2.6.1

[debian/amanda] / xfer-src / dest-null.c

diff --git a/xfer-src/dest-null.c b/xfer-src/dest-null.c
new file mode 100644 (file)
index 0000000..5167ceb
--- /dev/null
+++ b/xfer-src/dest-null.c
@@ -0,0 +1,158 @@
+/*
+ * Amanda, The Advanced Maryland Automatic Network Disk Archiver
+ * Copyright (c) 2008 Zmanda 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include "amxfer.h"
+#include "amanda.h"
+#include "simpleprng.h"
+
+/*
+ * Class declaration
+ *
+ * This declaration is entirely private; nothing but xfer_dest_null() references
+ * it directly.
+ */
+
+GType xfer_dest_null_get_type(void);
+#define XFER_DEST_NULL_TYPE (xfer_dest_null_get_type())
+#define XFER_DEST_NULL(obj) G_TYPE_CHECK_INSTANCE_CAST((obj), xfer_dest_null_get_type(), XferDestNull)
+#define XFER_DEST_NULL_CONST(obj) G_TYPE_CHECK_INSTANCE_CAST((obj), xfer_dest_null_get_type(), XferDestNull const)
+#define XFER_DEST_NULL_CLASS(klass) G_TYPE_CHECK_CLASS_CAST((klass), xfer_dest_null_get_type(), XferDestNullClass)
+#define IS_XFER_DEST_NULL(obj) G_TYPE_CHECK_INSTANCE_TYPE((obj), xfer_dest_null_get_type ())
+#define XFER_DEST_NULL_GET_CLASS(obj) G_TYPE_INSTANCE_GET_CLASS((obj), xfer_dest_null_get_type(), XferDestNullClass)
+
+static GObjectClass *parent_class = NULL;
+
+/*
+ * Main object structure
+ */
+
+typedef struct XferDestNull {
+    XferElement __parent__;
+
+    gboolean sent_info;
+
+    gboolean do_verify;
+    simpleprng_state_t prng;
+} XferDestNull;
+
+/*
+ * Class definition
+ */
+
+typedef struct {
+    XferElementClass __parent__;
+} XferDestNullClass;
+
+/*
+ * Implementation
+ */
+
+static void
+push_buffer_impl(
+    XferElement *elt,
+    gpointer buf,
+    size_t len)
+{
+    XferDestNull *self = (XferDestNull *)elt;
+
+    if (!buf)
+       return;
+
+    if (self->do_verify && !elt->cancelled) {
+       if (!simpleprng_verify_buffer(&self->prng, buf, len)) {
+           xfer_element_handle_error(elt,
+               _("verification of incoming bytestream failed"));
+           amfree(buf);
+           return;
+       }
+    }
+
+    if (!self->sent_info) {
+       /* send a superfluous message (this is a testing XferElement,
+        * after all) */
+       XMsg *msg = xmsg_new((XferElement *)self, XMSG_INFO, 0);
+       msg->message = stralloc("Is this thing on?");
+       xfer_queue_message(XFER_ELEMENT(self)->xfer, msg);
+       self->sent_info = TRUE;
+    }
+
+    amfree(buf);
+}
+
+static void
+class_init(
+    XferDestNullClass * selfc)
+{
+    XferElementClass *klass = XFER_ELEMENT_CLASS(selfc);
+    static xfer_element_mech_pair_t mech_pairs[] = {
+       { XFER_MECH_PUSH_BUFFER, XFER_MECH_NONE, 0, 0},
+       { XFER_MECH_NONE, XFER_MECH_NONE, 0, 0},
+    };
+
+    klass->push_buffer = push_buffer_impl;
+
+    klass->perl_class = "Amanda::Xfer::Dest::Null";
+    klass->mech_pairs = mech_pairs;
+
+    parent_class = g_type_class_peek_parent(selfc);
+}
+
+GType
+xfer_dest_null_get_type (void)
+{
+    static GType type = 0;
+
+    if G_UNLIKELY(type == 0) {
+        static const GTypeInfo info = {
+            sizeof (XferDestNullClass),
+            (GBaseInitFunc) NULL,
+            (GBaseFinalizeFunc) NULL,
+            (GClassInitFunc) class_init,
+            (GClassFinalizeFunc) NULL,
+            NULL /* class_data */,
+            sizeof (XferDestNull),
+            0 /* n_preallocs */,
+            (GInstanceInitFunc) NULL,
+            NULL
+        };
+
+        type = g_type_register_static (XFER_ELEMENT_TYPE, "XferDestNull", &info, 0);
+    }
+
+    return type;
+}
+
+/* create an element of this class; prototype is in xfer-element.h */
+XferElement *
+xfer_dest_null(
+    guint32 prng_seed)
+{
+    XferDestNull *self = (XferDestNull *)g_object_new(XFER_DEST_NULL_TYPE, NULL);
+    XferElement *elt = XFER_ELEMENT(self);
+
+    if (prng_seed) {
+       self->do_verify = TRUE;
+       simpleprng_seed(&self->prng, prng_seed);
+    } else {
+       g_assert(0);
+       self->do_verify = FALSE;
+    }
+
+    return elt;
+}