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/*
* Copyright (c) 2015 Samsung Electronics Co., Ltd All Rights Reserved
*
* Licensed under the Apache License, Version 2.0 (the License);
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdlib.h>
#include <stdbool.h>
#include <app_debug.h>
#include <gio/gio.h>
#include "util/usb.h"
#define DEVICED_INTERFACE_BLOCK "org.tizen.system.storage.BlockManager"
#define SIGNAL_DEVICE_BLOCKED "DeviceBlocked"
#define SIGNAL_DEVICE_CHANGED "DeviceChanged"
typedef void (*sig_cb_func)(GDBusConnection *connection,
const gchar *sender_name, const gchar *object_path,
const gchar *interface_name, const gchar *signal_name,
GVariant *parameters, gpointer user_data);
static void _device_blocked_cb(GDBusConnection *, const gchar *, const gchar *,
const gchar *, const gchar *, GVariant *, gpointer);
static void _device_changed_cb(GDBusConnection *, const gchar *, const gchar *,
const gchar *, const gchar *, GVariant *, gpointer);
struct _signal_info {
const char *interface;
const char *sig_name;
sig_cb_func sig_cb;
};
static struct _signal_info g_signal_info[E_SIGNAL_MAX] = {
[E_DEVICE_BLOCKED] = {
DEVICED_INTERFACE_BLOCK,
SIGNAL_DEVICE_BLOCKED,
_device_blocked_cb
},
[E_DEVICE_CHANGED] = {
DEVICED_INTERFACE_BLOCK,
SIGNAL_DEVICE_CHANGED,
_device_changed_cb
}
};
struct _cb_data {
void (*func)(void *data, int state);
void *data;
};
struct usb {
GDBusConnection *conn;
int sub_id[E_SIGNAL_MAX];
struct _cb_data cb[E_SIGNAL_MAX];
};
static void _device_blocked_cb(GDBusConnection *connection,
const gchar *sender_name, const gchar *object_path,
const gchar *interface_name, const gchar *signal_name,
GVariant *parameters, gpointer user_data)
{
const gchar *uuid, *mount_point;
struct usb *m;
int sig;
if (!parameters || !user_data) {
_ERR("invalid argument");
return;
}
m = user_data;
g_variant_get(parameters, "(ss)", &uuid, &mount_point);
sig = E_DEVICE_BLOCKED;
if (m->cb[sig].func)
m->cb[sig].func(m->cb[sig].data, USB_REMOVED);
}
static void _device_changed_cb(GDBusConnection *connection,
const gchar *sender_name, const gchar *object_path,
const gchar *interface_name, const gchar *signal_name,
GVariant *parameters, gpointer user_data)
{
const gchar *dev_node, *sys_path;
const gchar *fs_usage, *fs_type, *fs_ver, *fs_uuid;
const gchar *mount_point;
gint32 block_type, read_only, state, flags, storage_id;
gboolean primary;
struct usb *m;
int sig;
if (!parameters || !user_data) {
_ERR("invalid argument");
return;
}
m = user_data;
g_variant_get(parameters, "(issssssisibii)", &block_type, &dev_node,
&sys_path, &fs_usage, &fs_type, &fs_ver,
&fs_uuid, &read_only, &mount_point,
&state, &primary, &flags, &storage_id);
sig = E_DEVICE_CHANGED;
if (m->cb[sig].func)
m->cb[sig].func(m->cb[sig].data, state);
}
void usb_set_callback(struct usb *m, int sig,
void (*func)(void *, int), void *data)
{
if (!m) {
_ERR("failed to get usb handle");
return;
}
if (sig < 0 || sig >= E_SIGNAL_MAX) {
_ERR("invalid argument");
return;
}
m->cb[sig].func = func;
m->cb[sig].data = data;
}
struct usb *usb_create(void)
{
GDBusConnection *conn;
GError *error;
struct usb *m;
struct _signal_info si;
int i;
m = calloc(1, sizeof(*m));
if (!m) {
_ERR("failed to alloc usb");
return NULL;
}
error = NULL;
conn = g_bus_get_sync(G_BUS_TYPE_SYSTEM, NULL, &error);
if (!conn) {
_ERR("failed to get bus connection: %s",
error ? error->message : "");
g_error_free(error);
free(m);
return NULL;
}
for (i = 0; i < E_SIGNAL_MAX; i++) {
si = g_signal_info[i];
m->sub_id[i] = g_dbus_connection_signal_subscribe(conn, NULL,
si.interface, si.sig_name, NULL, NULL,
G_DBUS_SIGNAL_FLAGS_NONE,
si.sig_cb, m, NULL);
}
m->conn = conn;
return m;
}
void usb_destroy(struct usb *m)
{
int i;
if (!m) {
_ERR("failed to get usb handle");
return;
}
for (i = 0; i < E_SIGNAL_MAX; i++)
g_dbus_connection_signal_unsubscribe(m->conn, m->sub_id[i]);
free(m);
}
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