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Bluetooth: GATT: Make GAP name writable

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This makes GAP name writable if CONFIG_BT_DEVICE_NAME_STORAGE is > 0
which means the name can be persisted.

Fixes #8357

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Luiz Augusto von Dentz 2018-07-09 16:14:56 +03:00 • committed by Johan Hedberg
commit aa339ed0f2
1 changed files with 43 additions and 4 deletions
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47
subsys/bluetooth/host/gatt.c
View file

@ -46,7 +46,6 @@ struct ccc_store {
static sys_slist_t subscriptions;
#endif /* CONFIG_BT_GATT_CLIENT */
static const char *gap_name = CONFIG_BT_DEVICE_NAME;
static const u16_t gap_appearance = CONFIG_BT_DEVICE_APPEARANCE;
static sys_slist_t db;
@ -54,10 +53,41 @@ static sys_slist_t db;
static ssize_t read_name(struct bt_conn *conn, const struct bt_gatt_attr *attr,
void *buf, u16_t len, u16_t offset)
{
return bt_gatt_attr_read(conn, attr, buf, len, offset, gap_name,
strlen(gap_name));
const char *name = attr->user_data;
return bt_gatt_attr_read(conn, attr, buf, len, offset, name,
strlen(name));
}
#if CONFIG_BT_DEVICE_NAME_MAX > 0
static ssize_t write_name(struct bt_conn *conn, const struct bt_gatt_attr *attr,
const void *buf, u16_t len, u16_t offset,
u8_t flags)
{
char value[CONFIG_BT_DEVICE_NAME_MAX] = {};
if (flags & BT_GATT_WRITE_FLAG_PREPARE) {
return len;
}
if (offset) {
return BT_GATT_ERR(BT_ATT_ERR_INVALID_OFFSET);
}
if (len >= sizeof(value)) {
return BT_GATT_ERR(BT_ATT_ERR_INVALID_ATTRIBUTE_LEN);
}
memcpy(value, buf, len);
bt_set_name(value);
return len;
}
#endif /* CONFIG_BT_DEVICE_NAME */
static ssize_t read_appearance(struct bt_conn *conn,
const struct bt_gatt_attr *attr, void *buf,
u16_t len, u16_t offset)
@ -70,8 +100,17 @@ static ssize_t read_appearance(struct bt_conn *conn,
static struct bt_gatt_attr gap_attrs[] = {
BT_GATT_PRIMARY_SERVICE(BT_UUID_GAP),
#if CONFIG_BT_DEVICE_NAME_MAX > 0
/* Require pairing for writes to device name */
BT_GATT_CHARACTERISTIC(BT_UUID_GAP_DEVICE_NAME,
BT_GATT_CHRC_READ | BT_GATT_CHRC_WRITE,
BT_GATT_PERM_READ | BT_GATT_PERM_WRITE_ENCRYPT,
read_name, write_name, bt_dev.name),
#else
BT_GATT_CHARACTERISTIC(BT_UUID_GAP_DEVICE_NAME, BT_GATT_CHRC_READ,
BT_GATT_PERM_READ, read_name, NULL, NULL),
BT_GATT_PERM_READ, read_name, NULL,
CONFIG_BT_DEVICE_NAME),
#endif
BT_GATT_CHARACTERISTIC(BT_UUID_GAP_APPEARANCE, BT_GATT_CHRC_READ,
BT_GATT_PERM_READ, read_appearance, NULL, NULL),
};