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<template name="file-header">
/*
Generated by sbus code generator
Copyright (C) 2017 Red Hat
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <errno.h>
#include <talloc.h>
#include <tevent.h>
#include <dbus/dbus.h>
#include "${sbus-path}/sbus_private.h"
#include "${sbus-path}/sbus_interface_declarations.h"
#include "${header:arguments}"
#include "${header:invokers}"
static errno_t
sbus_invoker_schedule(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
void *handler,
void *private_data)
{
/* Schedule invoker as a timed event so it is processed after other
* event types. This will give dispatcher a chance to catch more
* messages before this invoker is triggered and therefore it will
* allow to potentially chain more request into one, especially for
* synchronous handlers. */
struct tevent_timer *te;
struct timeval tv;
tv = tevent_timeval_current_ofs(0, 5);
te = tevent_add_timer(ev, mem_ctx, tv, handler, private_data);
if (te == NULL) {
/* There is not enough memory to create a timer. We can't do
* anything about it. */
DEBUG(SSSDBG_OP_FAILURE, "Could not add invoker event!\n");
return ENOMEM;
}
return EOK;
}
</template>
<template name="invoker">
struct _sbus_invoke_in_${input-signature}_out_${output-signature}_state {
<toggle name="if-input-arguments">
struct _sbus_invoker_args_${input-signature} *in;
</toggle>
<toggle name="if-output-arguments">
struct _sbus_invoker_args_${output-signature} out;
</toggle>
struct {
enum sbus_handler_type type;
void *data;
errno_t (*sync)(TALLOC_CTX *, struct sbus_request *, void *<loop name="in">, ${type}</loop><loop name="in-raw">, ${type}</loop><loop name="out">, ${type}</loop><loop name="out-raw">, ${type}</loop>);
struct tevent_req * (*send)(TALLOC_CTX *, struct tevent_context *, struct sbus_request *, void *<loop name="in">, ${type}</loop><loop name="in-raw">, ${type}</loop><loop name="out-raw">, ${type}</loop>);
errno_t (*recv)(TALLOC_CTX *, struct tevent_req *<loop name="out">, ${type}</loop>);
} handler;
struct sbus_request *sbus_req;
DBusMessageIter *read_iterator;
DBusMessageIter *write_iterator;
};
static void
_sbus_invoke_in_${input-signature}_out_${output-signature}_step
(struct tevent_context *ev,
struct tevent_timer *te,
struct timeval tv,
void *private_data);
static void
_sbus_invoke_in_${input-signature}_out_${output-signature}_done
(struct tevent_req *subreq);
struct tevent_req *
_sbus_invoke_in_${input-signature}_out_${output-signature}_send
(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct sbus_request *sbus_req,
sbus_invoker_keygen keygen,
const struct sbus_handler *handler,
DBusMessageIter *read_iterator,
DBusMessageIter *write_iterator,
const char **_key)
{
struct _sbus_invoke_in_${input-signature}_out_${output-signature}_state *state;
struct tevent_req *req;
const char *key;
errno_t ret;
req = tevent_req_create(mem_ctx, &state, struct _sbus_invoke_in_${input-signature}_out_${output-signature}_state);
if (req == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, "Unable to create tevent request!\n");
return NULL;
}
state->handler.type = handler->type;
state->handler.data = handler->data;
state->handler.sync = handler->sync;
state->handler.send = handler->async_send;
state->handler.recv = handler->async_recv;
state->sbus_req = sbus_req;
state->read_iterator = read_iterator;
state->write_iterator = write_iterator;
<toggle name="if-input-arguments">
state->in = talloc_zero(state, struct _sbus_invoker_args_${input-signature});
if (state->in == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Unable to allocate space for input parameters!\n");
ret = ENOMEM;
goto done;
}
ret = _sbus_invoker_read_${input-signature}(state, read_iterator, state->in);
if (ret != EOK) {
goto done;
}
</toggle>
ret = sbus_invoker_schedule(state, ev, _sbus_invoke_in_${input-signature}_out_${output-signature}_step, req);
if (ret != EOK) {
goto done;
}
ret = sbus_request_key(state, keygen, sbus_req,<toggle name="if-input-arguments"> state->in<or> NULL</toggle>, &key);
if (ret != EOK) {
goto done;
}
if (_key != NULL) {
*_key = talloc_steal(mem_ctx, key);
}
ret = EAGAIN;
done:
if (ret != EAGAIN) {
tevent_req_error(req, ret);
tevent_req_post(req, ev);
}
return req;
}
static void _sbus_invoke_in_${input-signature}_out_${output-signature}_step
(struct tevent_context *ev,
struct tevent_timer *te,
struct timeval tv,
void *private_data)
{
struct _sbus_invoke_in_${input-signature}_out_${output-signature}_state *state;
struct tevent_req *subreq;
struct tevent_req *req;
errno_t ret;
req = talloc_get_type(private_data, struct tevent_req);
state = tevent_req_data(req, struct _sbus_invoke_in_${input-signature}_out_${output-signature}_state);
switch (state->handler.type) {
case SBUS_HANDLER_SYNC:
if (state->handler.sync == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, "Bug: sync handler is not specified!\n");
ret = ERR_INTERNAL;
goto done;
}
ret = state->handler.sync(state, state->sbus_req, state->handler.data<loop name="in">, state->in->arg${index}</loop><loop name="in-raw">, state->read_iterator</loop><loop name="out">, &state->out.arg${index}</loop><loop name="out-raw">, state->write_iterator</loop>);
if (ret != EOK) {
goto done;
}
<toggle name="if-output-arguments">
ret = _sbus_invoker_write_${output-signature}(state->write_iterator, &state->out);
</toggle>
goto done;
case SBUS_HANDLER_ASYNC:
if (state->handler.send == NULL || state->handler.recv == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, "Bug: async handler is not specified!\n");
ret = ERR_INTERNAL;
goto done;
}
subreq = state->handler.send(state, ev, state->sbus_req, state->handler.data<loop name="in">, state->in->arg${index}</loop><loop name="in-raw">, state->read_iterator</loop><loop name="out-raw">, state->write_iterator</loop>);
if (subreq == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, "Unable to create subrequest!\n");
ret = ENOMEM;
goto done;
}
tevent_req_set_callback(subreq, _sbus_invoke_in_${input-signature}_out_${output-signature}_done, req);
ret = EAGAIN;
goto done;
}
ret = ERR_INTERNAL;
done:
if (ret == EOK) {
tevent_req_done(req);
} else if (ret != EAGAIN) {
tevent_req_error(req, ret);
}
}
static void _sbus_invoke_in_${input-signature}_out_${output-signature}_done(struct tevent_req *subreq)
{
struct _sbus_invoke_in_${input-signature}_out_${output-signature}_state *state;
struct tevent_req *req;
errno_t ret;
req = tevent_req_callback_data(subreq, struct tevent_req);
state = tevent_req_data(req, struct _sbus_invoke_in_${input-signature}_out_${output-signature}_state);
ret = state->handler.recv(state, subreq<loop name="out">, &state->out.arg${index}</loop>);
talloc_zfree(subreq);
if (ret != EOK) {
tevent_req_error(req, ret);
return;
}
<toggle name="if-output-arguments">
ret = _sbus_invoker_write_${output-signature}(state->write_iterator, &state->out);
if (ret != EOK) {
tevent_req_error(req, ret);
return;
}
</toggle>
tevent_req_done(req);
return;
}
</template>
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