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/* callback.c
The dhcpctl callback object. */
/*
* Copyright (c) 1996-1999 Internet Software Consortium.
* Use is subject to license terms which appear in the file named
* ISC-LICENSE that should have accompanied this file when you
* received it. If a file named ISC-LICENSE did not accompany this
* file, or you are not sure the one you have is correct, you may
* obtain an applicable copy of the license at:
*
* http://www.isc.org/isc-license-1.0.html.
*
* This file is part of the ISC DHCP distribution. The documentation
* associated with this file is listed in the file DOCUMENTATION,
* included in the top-level directory of this release.
*
* Support and other services are available for ISC products - see
* http://www.isc.org for more information.
*/
#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 = malloc (sizeof *callback);
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,
"dhcpctl_set_callback");
omapi_object_reference ((omapi_object_t **)&callback -> outer, inner,
"dhcpctl_set_callback");
/* Save the actual handle pointer we were passed for the callback. */
omapi_object_reference (&callback -> object, h,
"dhcpctl_set_callback");
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 *name)
{
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,
name);
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;
}
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