Bluetooth: PNP: add pnp product id interface and tool

add pnp product id interface and tool for HID profile

Signed-off-by: Kai Cheng <[email protected]>

Author: chengkai15

include/zephyr/bluetooth/classic/sdp.h

@@ -716,6 +716,20 @@ int bt_sdp_get_features(const struct net_buf *buf, uint16_t *features);
  */
 int bt_sdp_get_vendor_id(const struct net_buf *buf, uint16_t *vendor_id);
 
+/** @brief Get Product ID
+ *
+ *  Helper API extracting remote Product ID. To get it proper
+ *  generic profile parameter needs to be selected usually listed in SDP
+ *  Interoperability Requirements section for given profile specification.
+ *
+ *  @param buf Buffer holding original raw record data from remote.
+ *  @param product_id On success populated by found Product ID.
+ *  mask.
+ *
+ *  @return 0 on success if product_id found and valid, negative in case any error
+ */
+int bt_sdp_get_product_id(const struct net_buf *buf, uint16_t *product_id);
+
 #ifdef __cplusplus
 }
 #endif

subsys/bluetooth/host/classic/sdp.c

@@ -3110,3 +3110,17 @@ int bt_sdp_get_vendor_id(const struct net_buf *buf, uint16_t *vendor_id)
 
 	return sdp_get_u16_data(&attr, vendor_id);
 }
+
+int bt_sdp_get_product_id(const struct net_buf *buf, uint16_t *product_id)
+{
+	struct bt_sdp_attr_item attr;
+	int err;
+
+	err = bt_sdp_get_attr(buf, &attr, BT_SDP_ATTR_PRODUCT_ID);
+	if (err < 0) {
+		LOG_WRN("Attribute 0x%04x not found, err %d", BT_SDP_ATTR_PRODUCT_ID, err);
+		return err;
+	}
+
+	return sdp_get_u16_data(&attr, product_id);
+}

subsys/bluetooth/host/classic/shell/bredr.c

@@ -1000,7 +1000,7 @@ static uint8_t sdp_pnp_user(struct bt_conn *conn, struct bt_sdp_client_result *r
 			    const struct bt_sdp_discover_params *params)
 {
 	char addr[BT_ADDR_STR_LEN];
-	uint16_t vendor_id;
+	uint16_t vendor_id, product_id;
 	int err;
 
 	conn_addr_str(conn, addr, sizeof(addr));
@@ -1016,6 +1016,14 @@ static uint8_t sdp_pnp_user(struct bt_conn *conn, struct bt_sdp_client_result *r
 		}
 
 		bt_shell_print("PNP vendor id param 0x%04x", vendor_id);
+
+		err = bt_sdp_get_product_id(result->resp_buf, &product_id);
+		if (err < 0) {
+			bt_shell_error("PNP product id not found, err %d", err);
+			goto done;
+		}
+
+		bt_shell_print("PNP product id param 0x%04x", product_id);
 	} else {
 		bt_shell_print("No SDP PNP data from remote %s", addr);
 	}