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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2012 Texas Instruments, Inc.
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdbool.h>
#include <errno.h>
#include <glib.h>
#include "lib/uuid.h"
#include "src/plugin.h"
#include "src/adapter.h"
#include "src/device.h"
#include "src/profile.h"
#include "src/service.h"
#include "src/shared/util.h"
#include "attrib/gattrib.h"
#include "src/attio.h"
#include "attrib/att.h"
#include "attrib/gatt.h"
#include "src/log.h"
#define PNP_ID_SIZE 7
struct deviceinfo {
struct btd_device *dev; /* Device reference */
GAttrib *attrib; /* GATT connection */
guint attioid; /* Att watcher id */
struct att_range *svc_range; /* DeviceInfo range */
GSList *chars; /* Characteristics */
};
struct characteristic {
struct gatt_char attr; /* Characteristic */
struct deviceinfo *d; /* deviceinfo where the char belongs */
};
static void deviceinfo_driver_remove(struct btd_service *service)
{
struct deviceinfo *d = btd_service_get_user_data(service);
if (d->attioid > 0)
btd_device_remove_attio_callback(d->dev, d->attioid);
if (d->attrib != NULL)
g_attrib_unref(d->attrib);
g_slist_free_full(d->chars, g_free);
btd_device_unref(d->dev);
g_free(d->svc_range);
g_free(d);
}
static void read_pnpid_cb(guint8 status, const guint8 *pdu, guint16 len,
gpointer user_data)
{
struct characteristic *ch = user_data;
uint8_t value[PNP_ID_SIZE];
ssize_t vlen;
if (status != 0) {
error("Error reading PNP_ID value: %s", att_ecode2str(status));
return;
}
vlen = dec_read_resp(pdu, len, value, sizeof(value));
if (vlen < 0) {
error("Error reading PNP_ID: Protocol error");
return;
}
if (vlen < 7) {
error("Error reading PNP_ID: Invalid pdu length received");
return;
}
btd_device_set_pnpid(ch->d->dev, value[0], get_le16(&value[1]),
get_le16(&value[3]), get_le16(&value[5]));
}
static void process_deviceinfo_char(struct characteristic *ch)
{
if (g_strcmp0(ch->attr.uuid, PNPID_UUID) == 0)
gatt_read_char(ch->d->attrib, ch->attr.value_handle,
read_pnpid_cb, ch);
}
static void configure_deviceinfo_cb(uint8_t status, GSList *characteristics,
void *user_data)
{
struct deviceinfo *d = user_data;
GSList *l;
if (status != 0) {
error("Discover deviceinfo characteristics: %s",
att_ecode2str(status));
return;
}
for (l = characteristics; l; l = l->next) {
struct gatt_char *c = l->data;
struct characteristic *ch;
ch = g_new0(struct characteristic, 1);
ch->attr.handle = c->handle;
ch->attr.properties = c->properties;
ch->attr.value_handle = c->value_handle;
memcpy(ch->attr.uuid, c->uuid, MAX_LEN_UUID_STR + 1);
ch->d = d;
d->chars = g_slist_append(d->chars, ch);
process_deviceinfo_char(ch);
}
}
static void attio_connected_cb(GAttrib *attrib, gpointer user_data)
{
struct deviceinfo *d = user_data;
d->attrib = g_attrib_ref(attrib);
gatt_discover_char(d->attrib, d->svc_range->start, d->svc_range->end,
NULL, configure_deviceinfo_cb, d);
}
static void attio_disconnected_cb(gpointer user_data)
{
struct deviceinfo *d = user_data;
g_attrib_unref(d->attrib);
d->attrib = NULL;
}
static int deviceinfo_register(struct btd_service *service,
struct gatt_primary *prim)
{
struct btd_device *device = btd_service_get_device(service);
struct deviceinfo *d;
d = g_new0(struct deviceinfo, 1);
d->dev = btd_device_ref(device);
d->svc_range = g_new0(struct att_range, 1);
d->svc_range->start = prim->range.start;
d->svc_range->end = prim->range.end;
btd_service_set_user_data(service, d);
d->attioid = btd_device_add_attio_callback(device, attio_connected_cb,
attio_disconnected_cb, d);
return 0;
}
static int deviceinfo_driver_probe(struct btd_service *service)
{
struct btd_device *device = btd_service_get_device(service);
struct gatt_primary *prim;
prim = btd_device_get_primary(device, DEVICE_INFORMATION_UUID);
if (prim == NULL)
return -EINVAL;
return deviceinfo_register(service, prim);
}
static struct btd_profile deviceinfo_profile = {
.name = "deviceinfo",
.remote_uuid = DEVICE_INFORMATION_UUID,
.device_probe = deviceinfo_driver_probe,
.device_remove = deviceinfo_driver_remove
};
static int deviceinfo_init(void)
{
return btd_profile_register(&deviceinfo_profile);
}
static void deviceinfo_exit(void)
{
btd_profile_unregister(&deviceinfo_profile);
}
BLUETOOTH_PLUGIN_DEFINE(deviceinfo, VERSION, BLUETOOTH_PLUGIN_PRIORITY_DEFAULT,
deviceinfo_init, deviceinfo_exit)
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