1 files changed, 179 insertions, 0 deletions
diff --git a/contrib/isc-dhcp/dhcpctl/callback.c b/contrib/isc-dhcp/dhcpctl/callback.c
new file mode 100644
index 000000000000..af1364c19171
--- /dev/null
+++ b/contrib/isc-dhcp/dhcpctl/callback.c
@@ -0,0 +1,179 @@
+/* callback.c
+
+   The dhcpctl callback object. */
+
+/*
+ * Copyright (c) 1999-2002 Internet Software Consortium.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of The Internet Software Consortium nor the names
+ *    of its contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INTERNET SOFTWARE CONSORTIUM AND
+ * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE INTERNET SOFTWARE CONSORTIUM OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This software has been written for the Internet Software Consortium
+ * by Ted Lemon in cooperation with Vixie Enterprises and Nominum, Inc.
+ * To learn more about the Internet Software Consortium, see
+ * ``http://www.isc.org/''.  To learn more about Vixie Enterprises,
+ * see ``http://www.vix.com''.   To learn more about Nominum, Inc., see
+ * ``http://www.nominum.com''.
+ */
+
+#include <omapip/omapip_p.h>
+#include "dhcpctl.h"
+
+/* dhcpctl_set_callback
+
+   synchronous, with asynchronous aftereffect
+   handle is some object upon which some kind of process has been
+   started - e.g., an open, an update or a refresh.
+   data is an anonymous pointer containing some information that
+   the callback will use to figure out what event completed.
+   return value of 0 means callback was successfully set, a nonzero
+   status code is returned otherwise.
+   Upon completion of whatever task is in process, the callback
+   will be passed the handle to the object, a status code
+   indicating what happened, and the anonymous pointer passed to  */
+
+dhcpctl_status dhcpctl_set_callback (dhcpctl_handle h, void *data,
+				     void (*func) (dhcpctl_handle,
+						   dhcpctl_status, void *))
+{
+	dhcpctl_callback_object_t *callback;
+	omapi_object_t *inner;
+	isc_result_t status;
+
+	callback = dmalloc (sizeof *callback, MDL);
+	if (!callback)
+		return ISC_R_NOMEMORY;
+
+	/* Tie the callback object to the innermost object in the chain. */
+	for (inner = h; inner -> inner; inner = inner -> inner)
+		;
+	omapi_object_reference (&inner -> inner,
+				(omapi_object_t *)callback, MDL);
+	omapi_object_reference ((omapi_object_t **)&callback -> outer,
+				inner, MDL);
+
+	/* Save the actual handle pointer we were passed for the callback. */
+	omapi_object_reference (&callback -> object, h, MDL);
+	callback -> data = data;
+	callback -> callback = func;
+	
+	return ISC_R_SUCCESS;
+}
+
+/* Callback methods (not meant to be called directly) */
+
+isc_result_t dhcpctl_callback_set_value (omapi_object_t *h,
+					 omapi_object_t *id,
+					 omapi_data_string_t *name,
+					 omapi_typed_data_t *value)
+{
+	if (h -> type != dhcpctl_callback_type)
+		return ISC_R_INVALIDARG;
+
+	if (h -> inner && h -> inner -> type -> set_value)
+		return (*(h -> inner -> type -> set_value))
+			(h -> inner, id, name, value);
+	return ISC_R_NOTFOUND;
+}
+
+isc_result_t dhcpctl_callback_get_value (omapi_object_t *h,
+					 omapi_object_t *id,
+					 omapi_data_string_t *name,
+					 omapi_value_t **value)
+{
+	if (h -> type != dhcpctl_callback_type)
+		return ISC_R_INVALIDARG;
+	
+	if (h -> inner && h -> inner -> type -> get_value)
+		return (*(h -> inner -> type -> get_value))
+			(h -> inner, id, name, value);
+	return ISC_R_NOTFOUND;
+}
+
+isc_result_t dhcpctl_callback_signal_handler (omapi_object_t *o,
+					      const char *name, va_list ap)
+{
+	dhcpctl_callback_object_t *p;
+	isc_result_t waitstatus;
+
+	if (o -> type != dhcpctl_callback_type)
+		return ISC_R_INVALIDARG;
+	p = (dhcpctl_callback_object_t *)o;
+
+	/* Not a signal we recognize? */
+	if (strcmp (name, "ready")) {
+		if (p -> inner && p -> inner -> type -> signal_handler)
+			return (*(p -> inner -> type -> signal_handler))
+				(p -> inner, name, ap);
+		return ISC_R_NOTFOUND;
+	}
+
+	if (p -> object -> type == dhcpctl_remote_type) {
+		waitstatus = (((dhcpctl_remote_object_t *)
+			       (p -> object)) -> waitstatus);
+	} else
+		waitstatus = ISC_R_SUCCESS;
+
+	/* Do the callback. */
+	if (p -> callback)
+		(*(p -> callback)) (p -> object, waitstatus, p -> data);
+
+	return ISC_R_SUCCESS;
+}
+
+isc_result_t dhcpctl_callback_destroy (omapi_object_t *h,
+				       const char *file, int line)
+{
+	dhcpctl_callback_object_t *p;
+	if (h -> type != dhcpctl_callback_type)
+		return ISC_R_INVALIDARG;
+	p = (dhcpctl_callback_object_t *)h;
+	if (p -> handle)
+		omapi_object_dereference ((omapi_object_t **)&p -> handle,
+					  file, line);
+	return ISC_R_SUCCESS;
+}
+
+/* Write all the published values associated with the object through the
+   specified connection. */
+
+isc_result_t dhcpctl_callback_stuff_values (omapi_object_t *c,
+					    omapi_object_t *id,
+					    omapi_object_t *p)
+{
+	int i;
+
+	if (p -> type != dhcpctl_callback_type)
+		return ISC_R_INVALIDARG;
+
+	if (p -> inner && p -> inner -> type -> stuff_values)
+		return (*(p -> inner -> type -> stuff_values)) (c, id,
+								p -> inner);
+	return ISC_R_SUCCESS;
+}
+