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// SPDX-License-Identifier: Apache-2.0
// Copyright (C) 2018 IBM Corp.
#include <assert.h>
#include <errno.h>
#include <systemd/sd-bus.h>
#include "common.h"
#include "dbus.h"
#include "control_dbus.h"
#include "mboxd.h"
typedef int (*control_action)(struct mbox_context *context);
static int control_dbus_directive(sd_bus_message *m, void *userdata,
sd_bus_error *ret_error,
control_action action)
{
struct mbox_context *context;
sd_bus_message *n;
int rc;
if (!action) {
MSG_ERR("No action provided\n");
return -EINVAL;
}
context = (struct mbox_context *) userdata;
if (!context) {
MSG_ERR("DBUS Internal Error\n");
return -EINVAL;
}
rc = action(context);
if (rc < 0) {
MSG_ERR("Action failed: %d\n", rc);
return rc;
}
rc = sd_bus_message_new_method_return(m, &n);
if (rc < 0) {
MSG_ERR("sd_bus_message_new_method_return failed: %d\n", rc);
return rc;
}
return sd_bus_send(NULL, n, NULL);
}
static int control_dbus_ping(sd_bus_message *m, void *userdata,
sd_bus_error *ret_error)
{
return control_dbus_directive(m, userdata, ret_error, control_ping);
}
static int control_dbus_reset(sd_bus_message *m, void *userdata,
sd_bus_error *ret_error)
{
return control_dbus_directive(m, userdata, ret_error, control_reset);
}
static int control_dbus_kill(sd_bus_message *m, void *userdata,
sd_bus_error *ret_error)
{
return control_dbus_directive(m, userdata, ret_error, control_kill);
}
static int control_dbus_modified(sd_bus_message *m, void *userdata,
sd_bus_error *ret_error)
{
return control_dbus_directive(m, userdata, ret_error, control_modified);
}
static int control_dbus_suspend(sd_bus_message *m, void *userdata,
sd_bus_error *ret_error)
{
return control_dbus_directive(m, userdata, ret_error, control_suspend);
}
static int control_dbus_resume(sd_bus_message *m, void *userdata,
sd_bus_error *ret_error)
{
struct mbox_context *context;
sd_bus_message *n;
bool modified;
int rc;
context = (struct mbox_context *) userdata;
if (!context) {
MSG_ERR("DBUS Internal Error\n");
return -EINVAL;
}
rc = sd_bus_message_read_basic(m, 'b', &modified);
if (rc < 0) {
MSG_ERR("DBUS error reading message: %s\n", strerror(-rc));
return rc;
}
rc = control_resume(context, modified);
if (rc < 0)
return rc;
rc = sd_bus_message_new_method_return(m, &n);
if (rc < 0) {
MSG_ERR("sd_bus_message_new_method_return failed: %d\n", rc);
return rc;
}
return sd_bus_send(NULL, n, NULL);
}
static int control_dbus_get_u8(sd_bus *bus, const char *path,
const char *interface, const char *property,
sd_bus_message *reply, void *userdata,
sd_bus_error *ret_error)
{
struct mbox_context *context = userdata;
uint8_t value;
assert(!strcmp(MBOX_DBUS_OBJECT, path));
if (!strcmp("DaemonState", property)) {
value = control_daemon_state(context);
} else if (!strcmp("LpcState", property)) {
value = control_lpc_state(context);
} else {
MSG_ERR("Unknown DBus property: %s\n", property);
return -EINVAL;
}
return sd_bus_message_append(reply, "y", value);
}
static const sd_bus_vtable mboxd_vtable[] = {
SD_BUS_VTABLE_START(0),
SD_BUS_METHOD("Ping", NULL, NULL, &control_dbus_ping,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Reset", NULL, NULL, &control_dbus_reset,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Kill", NULL, NULL, &control_dbus_kill,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("MarkFlashModified", NULL, NULL, &control_dbus_modified,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Suspend", NULL, NULL, &control_dbus_suspend,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Resume", "b", NULL, &control_dbus_resume,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_PROPERTY("DaemonState", "y", &control_dbus_get_u8, 0,
SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("LpcState", "y", &control_dbus_get_u8, 0,
SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_VTABLE_END
};
int control_dbus_init(struct mbox_context *context)
{
return sd_bus_add_object_vtable(context->bus, NULL,
MBOX_DBUS_OBJECT,
MBOX_DBUS_CONTROL_IFACE,
mboxd_vtable, context);
}
#define __unused __attribute__((unused))
void control_dbus_free(struct mbox_context *context __unused)
{
return;
}
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