dthornley / diable Goto Github PK

The project should compile fine without external dependencies just after changing the Bundle Identifier in the General panel of the Targets settings and the Team in the Signing and Capabilities tab of Xcode -- Spike and xDrip4iO5 users know already very well what that means... ;-)

If you own an iPad you can download the zipped archive of this repository and tap DiaBLE Playground.swiftpm: DiaBLE was born in fact as a single script for the iPad Swift Playgrounds to test the internal workings of the several troublesome BLE devices I bought, mainly the Bubble and the MiaoMiao. I upgraded it to the version 4.1 of the Playgrounds which still support iOS 15 but I cannot afford to support such transmitters and the WebOOP glucose.space server anymore.

Currently I am targeting only the latest betas of Xcode and iOS and focusing on the new Libre 3. The new async / await and actors introduced in Swift 5.5 and iOS 15 probably would require a total rewrite of DiaBLE's foundations, as well as the enhanced Gen2 protocols already adopted by the Libre 2 Sense/US/CA/AU which haven't been reversed yet.

Still too early to decide the final design (but I really like already the evil logo 😈), here there are some recent screenshots I tweeted or posted in the comments:

Please refer to the TODOs list for the up-to-date status of all the current limitations and known bugs of this prototype.

Warnings:

• the temperature-based calibration algorithm has been derived from the old LibreLink 2.3: it is known that the Vendor improves its algorithms at every new release, smoothing the historical values and projecting the trend ones into the future to compensate the interstitial delay but these further stages aren't understood yet; I never was convinced by the simple linear regression models that others apply on finger pricks;
• activating the BLE streaming of data on a Libre 2 will break other apps' pairings and you will have to reinstall them to get their alarms back again; in Test mode it is possible however to sniff the incoming data of multiple apps running side-by-side by just activating the notifications on the same BLE characteristics: the same technique is used to analyze the Libre 3 incoming traffic since the Core Bluetooth connections are reference-counted;
• connecting directly to a Libre 2/3 from an AppleWatch is currently just a proof of concept that it is technically possiBLE: keeping the connection in the background will require additional work and AFAIK nobody else is capable of doing the job... :-P

Note: the exploitation which allows to reset and reactivate a Libre 1 is well known to the Vendor and was unveiled already during BlackAlps 2019 and in PoC||GTFO 0x20.

Credits: @bubbledevteam, @captainbeeheart, @creepymonster, @cryptax, @dabear, @DecentWoodpecker67, @ivalkou, Jaap Korthals Altes, @keencave, LibreMonitor, Loop, Marek Macner, @monder, Nightguard, Nightscout LibreLink Up Uploader, @travisgoodspeed, WoofWoof, xDrip+, xDrip4iO5.