guint gatt_discover_primary(GAttrib *attrib, bt_uuid_t *uuid, gatt_cb_t func,
gpointer user_data)
{
struct discover_primary *dp;
size_t buflen;
uint8_t *buf = g_attrib_get_buffer(attrib, &buflen);
GAttribResultFunc cb;
guint16 plen;
plen = encode_discover_primary(0x0001, 0xffff, uuid, buf, buflen);
if (plen == 0)
return 0;
dp = g_try_new0(struct discover_primary, 1);
if (dp == NULL)
return 0;
dp->attrib = g_attrib_ref(attrib);
dp->cb = func;
dp->user_data = user_data;
dp->start = 0x0001;
if (uuid) {
dp->uuid = *uuid;
cb = primary_by_uuid_cb;
} else
cb = primary_all_cb;
dp->id = g_attrib_send(attrib, 0, buf, plen, cb,
discover_primary_ref(dp),
discover_primary_unref);
return dp->id;
}
static void primary_by_uuid_cb(guint8 status, const guint8 *ipdu,
guint16 iplen, gpointer user_data)
{
struct discover_primary *dp = user_data;
GSList *ranges, *last;
struct att_range *range;
uint8_t *buf;
guint16 oplen;
int err = 0;
size_t buflen;
if (status) {
err = status == ATT_ECODE_ATTR_NOT_FOUND ? 0 : status;
goto done;
}
ranges = dec_find_by_type_resp(ipdu, iplen);
if (ranges == NULL)
goto done;
dp->primaries = g_slist_concat(dp->primaries, ranges);
last = g_slist_last(ranges);
range = last->data;
if (range->end == 0xffff)
goto done;
/*
* If last handle is lower from previous start handle then it is smth
* wrong. Let's stop search, otherwise we might enter infinite loop.
*/
if (range->end < dp->start) {
err = ATT_ECODE_UNLIKELY;
goto done;
}
dp->start = range->end + 1;
buf = g_attrib_get_buffer(dp->attrib, &buflen);
oplen = encode_discover_primary(dp->start, 0xffff, &dp->uuid,
buf, buflen);
if (oplen == 0)
goto done;
g_attrib_send(dp->attrib, dp->id, buf, oplen, primary_by_uuid_cb,
discover_primary_ref(dp), discover_primary_unref);
return;
done:
dp->cb(err, dp->primaries, dp->user_data);
}
static void primary_by_uuid_cb(guint8 status, const guint8 *ipdu,
guint16 iplen, gpointer user_data)
{
struct discover_primary *dp = user_data;
GSList *ranges, *last;
struct att_range *range;
uint8_t *buf;
guint16 oplen;
int err = 0;
size_t buflen;
if (status) {
err = status == ATT_ECODE_ATTR_NOT_FOUND ? 0 : status;
goto done;
}
ranges = dec_find_by_type_resp(ipdu, iplen);
if (ranges == NULL)
goto done;
dp->primaries = g_slist_concat(dp->primaries, ranges);
last = g_slist_last(ranges);
range = last->data;
if (range->end == 0xffff)
goto done;
buf = g_attrib_get_buffer(dp->attrib, &buflen);
oplen = encode_discover_primary(range->end + 1, 0xffff, &dp->uuid,
buf, buflen);
if (oplen == 0)
goto done;
g_attrib_send(dp->attrib, dp->id, buf, oplen, primary_by_uuid_cb,
discover_primary_ref(dp), discover_primary_unref);
return;
done:
dp->cb(err, dp->primaries, dp->user_data);
}
static void primary_all_cb(guint8 status, const guint8 *ipdu, guint16 iplen,
gpointer user_data)
{
struct discover_primary *dp = user_data;
struct att_data_list *list;
unsigned int i, err;
uint16_t start, end;
uint8_t type;
if (status) {
err = status == ATT_ECODE_ATTR_NOT_FOUND ? 0 : status;
goto done;
}
list = dec_read_by_grp_resp(ipdu, iplen);
if (list == NULL) {
err = ATT_ECODE_IO;
goto done;
}
if (list->len == 6)
type = BT_UUID16;
else if (list->len == 20)
type = BT_UUID128;
else {
att_data_list_free(list);
err = ATT_ECODE_INVALID_PDU;
goto done;
}
for (i = 0, end = 0; i < list->num; i++) {
const uint8_t *data = list->data[i];
struct gatt_primary *primary;
bt_uuid_t uuid128;
start = get_le16(&data[0]);
end = get_le16(&data[2]);
get_uuid128(type, &data[4], &uuid128);
primary = g_try_new0(struct gatt_primary, 1);
if (!primary) {
att_data_list_free(list);
err = ATT_ECODE_INSUFF_RESOURCES;
goto done;
}
primary->range.start = start;
primary->range.end = end;
bt_uuid_to_string(&uuid128, primary->uuid, sizeof(primary->uuid));
dp->primaries = g_slist_append(dp->primaries, primary);
}
att_data_list_free(list);
err = 0;
/*
* If last handle is lower from previous start handle then it is smth
* wrong. Let's stop search, otherwise we might enter infinite loop.
*/
if (end < dp->start) {
err = ATT_ECODE_UNLIKELY;
goto done;
}
dp->start = end + 1;
if (end != 0xffff) {
size_t buflen;
uint8_t *buf = g_attrib_get_buffer(dp->attrib, &buflen);
guint16 oplen = encode_discover_primary(dp->start, 0xffff, NULL,
buf, buflen);
g_attrib_send(dp->attrib, dp->id, buf, oplen, primary_all_cb,
discover_primary_ref(dp),
discover_primary_unref);
return;
}
done:
dp->cb(err, dp->primaries, dp->user_data);
}
