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/*
Unix SMB/CIFS implementation.
helper functions for task based servers (nbtd, winbind etc)
Copyright (C) Andrew Tridgell 2005
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 "includes.h"
#include "process_model.h"
#include "lib/messaging/irpc.h"
#include "param/param.h"
#include "librpc/gen_ndr/ndr_irpc_c.h"
/*
terminate a task service
*/
void task_server_terminate(struct task_server *task, const char *reason, bool fatal)
{
struct tevent_context *event_ctx = task->event_ctx;
const struct model_ops *model_ops = task->model_ops;
if (fatal) {
DBG_ERR("task_server_terminate: [%s]\n", reason);
} else {
DBG_NOTICE("task_server_terminate: [%s]\n", reason);
}
if (fatal && task->msg_ctx != NULL) {
struct dcerpc_binding_handle *irpc_handle;
struct samba_terminate r;
irpc_handle = irpc_binding_handle_by_name(task, task->msg_ctx,
"samba", &ndr_table_irpc);
if (irpc_handle != NULL) {
/* Note: this makes use of nested event loops... */
dcerpc_binding_handle_set_sync_ev(irpc_handle, event_ctx);
r.in.reason = reason;
dcerpc_samba_terminate_r(irpc_handle, task, &r);
}
}
imessaging_cleanup(task->msg_ctx);
model_ops->terminate_task(
event_ctx, task->lp_ctx, reason, fatal, task->process_context);
/* don't free this above, it might contain the 'reason' being printed */
talloc_free(task);
}
/* used for the callback from the process model code */
struct task_state {
const struct service_details *service_details;
const struct model_ops *model_ops;
};
/*
called by the process model code when the new task starts up. This then calls
the server specific startup code
*/
static struct task_server *task_server_callback(struct tevent_context *event_ctx,
struct loadparm_context *lp_ctx,
struct server_id server_id,
void *private_data,
void *context)
{
struct task_server *task;
NTSTATUS status = NT_STATUS_OK;
struct task_state *state = talloc_get_type(private_data, struct task_state);
task = talloc(event_ctx, struct task_server);
if (task == NULL) return NULL;
task->event_ctx = event_ctx;
task->model_ops = state->model_ops;
task->server_id = server_id;
task->lp_ctx = lp_ctx;
task->process_context = context;
task->msg_ctx = imessaging_init(task,
task->lp_ctx,
task->server_id,
task->event_ctx);
if (!task->msg_ctx) {
task_server_terminate(task, "imessaging_init() failed", true);
return NULL;
}
status = state->service_details->task_init(task);
if (!NT_STATUS_IS_OK(status)) {
return NULL;
}
return task;
}
/*
startup a task based server
*/
NTSTATUS task_server_startup(struct tevent_context *event_ctx,
struct loadparm_context *lp_ctx,
const char *service_name,
const struct model_ops *model_ops,
const struct service_details *service_details,
int from_parent_fd)
{
struct task_state *state;
state = talloc(event_ctx, struct task_state);
NT_STATUS_HAVE_NO_MEMORY(state);
state->service_details = service_details;
state->model_ops = model_ops;
state->model_ops->new_task(event_ctx, lp_ctx, service_name,
task_server_callback, state, service_details,
from_parent_fd);
return NT_STATUS_OK;
}
/*
setup a task title
*/
void task_server_set_title(struct task_server *task, const char *title)
{
task->model_ops->set_title(task->event_ctx, title);
}
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