This adds prepare and execute write handling on Service Change CCC
descriptor.
---
android/gatt.c | 36 ++++++++++++++++++++++++++++++++++--
1 file changed, 34 insertions(+), 2 deletions(-)
diff --git a/android/gatt.c b/android/gatt.c
index b749705..c00eb9e 100644
--- a/android/gatt.c
+++ b/android/gatt.c
@@ -171,6 +171,8 @@ struct gatt_device {
struct queue *autoconnect_apps;
struct queue *pending_requests;
+ bool wait_svc_change_execute_write;
+ uint16_t svc_change_ccc;
};
struct app_connection {
@@ -6599,6 +6601,28 @@ static uint8_t write_execute_request(const uint8_t *cmd, uint16_t cmd_len,
uint8_t value;
struct pending_request *data;
+ /* handle embeded ccc */
+ if (dev->wait_svc_change_execute_write) {
+ uint8_t flags;
+
+ dec_exec_write_req(cmd, cmd_len, &flags);
+ dev->wait_svc_change_execute_write = false;
+
+ if (!!flags)
+ bt_store_gatt_ccc(&dev->bdaddr, dev->svc_change_ccc);
+
+ if (!pending_execute_write()) {
+ size_t mtu;
+ uint16_t len = 0;
+ uint8_t *rsp = g_attrib_get_buffer(dev->attrib, &mtu);
+
+ len = enc_exec_write_resp(rsp);
+ g_attrib_send(dev->attrib, 0, rsp, len, NULL, NULL,
+ NULL);
+ return 0;
+ }
+ }
+
/*
* Check if there was any write prep before.
* TODO: Try to find better error code if possible
@@ -7012,8 +7036,16 @@ static void gatt_srvc_change_write_cb(struct gatt_db_attribute *attrib,
return;
}
- /* Set services changed indication value */
- bt_store_gatt_ccc(bdaddr, get_le16(value));
+ switch (opcode) {
+ case ATT_OP_PREP_WRITE_REQ:
+ dev->wait_svc_change_execute_write = true;
+ dev->svc_change_ccc = get_le16(value);
+ break;
+ default:
+ /* Set services changed indication value */
+ bt_store_gatt_ccc(bdaddr, get_le16(value));
+ break;
+ }
gatt_db_attribute_write_result(attrib, id, 0);
}
--
1.9.1
--
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