bluetooth: Implement EIR parsing for HCI_EVENT_EXTENDED_INQUIRY_EVENT

This parses only EIR_NAME_SHORT and EIR_NAME_COMPLETE, others are not
yet usefull, adds a way to fetch the cached friendly name and adds a
friendlyName field to RemoteDevice. Refactors DeviceListItem to work on
RemoteDevice as it's only being used for that.Also adds a check if the
cached name is complete or not. If not ask for the complete name.

Change-Id: I7e37fb9cf44cb5598ef348fdd4d781c5ae04e24e
Reviewed-on: https://review.haiku-os.org/c/haiku/+/10489
Reviewed-by: waddlesplash <[email protected]>
Tested-by: Commit checker robot <[email protected]>

headers/os/bluetooth/HCI/btHCI_event.h

@@ -276,6 +276,7 @@ struct hci_ev_sychronous_connection_changed {
 
 // TODO: Define remaining Bluetooth 2.1 events structures
 #define HCI_EVENT_EXTENDED_INQUIRY_RESULT			0x2F
+#define HCI_MAX_EIR_LENGTH 240
 struct hci_ev_extended_inquiry_info {
     bdaddr_t bdaddr;
     uint8    page_repetition_mode;
@@ -283,8 +284,10 @@ struct hci_ev_extended_inquiry_info {
     uint8    dev_class[3];
     uint16   clock_offset;
     int8     rssi;
-    uint8    eir[240];
+    uint8    eir[HCI_MAX_EIR_LENGTH];
 } __attribute__((packed));
+#define EIR_NAME_SHORT 0x08
+#define EIR_NAME_COMPLETE 0x09
 
 #define HCI_EVENT_ENCRYPTION_KEY_REFRESH_COMPLETE	0x30
 

headers/os/bluetooth/RemoteDevice.h

@@ -31,6 +31,7 @@ public:
 	bool IsTrustedDevice();
 	BString GetFriendlyName(bool alwaysAsk); /* Throwing */
 	BString GetFriendlyName(void); /* Throwing */
+	BString GetCachedFriendlyName();
 	bdaddr_t GetBluetoothAddress();
 	DeviceClass GetDeviceClass();
 
@@ -69,6 +70,8 @@ private:
 	uint8		fScanMode;
 	uint16		fClockOffset;
 	int8        fRSSI;
+	BString     fFriendlyName;
+	bool        fFriendlyNameIsComplete;
 };
 
 }