Hi Christoph,

    very cool work.  Let me suggest another avenue for the simulation
sandbox. Apologies if we've already discussed this.  MethodFinder is a
super cool tool, but it has to be prevented from creating havok using a
horrible hack.  A set of selectors are used to prevent MethodFinder from
starting potentially dangerous computations.  This list isn't obvious, is
never up-to-date, and can potentially exclude useful results.  A much
better way of implementing MethodFinder seems to be to implement it using
simulation and have it maintain the set of objects created so far in the
execution, allowing them to be mutated, but aborting whenever an attempt is
made to modify an object outside of the sandbox, etc.  This could be a much
more robust way to architect the message finder, and performance might be
adequate.  I think it's worth exploring.

On Wed, Mar 17, 2021 at 5:32 AM Thiede, Christoph <
Christoph.Thiede at student.hpi.uni-potsdam.de> wrote:

> Hi all!
>
>
> After announcing SimulationStudio and Sandbox yesterday [3], today I'm
> happy to introduce you to two other repositories which I have been working
> at during the last months. Last week, I had the pleasure to present them
> during the German Squeak Winter Demos [4]. Drum roll, say hello to
> TelegramBot [1] & TelegramSmalltalkBot [2]! :-)
>
>
> *TelegramBot* is a small framework I built to make it possible to
> implement bots for the Telegram messenger [5]. It uses the official
> Telegram Bot REST API [6] and maps it to an object-oriented design in
> Squeak, providing support for different bot capabilities such as message
> sending, receiving, and editing. It also allows sending multi-media message
> types such as pictures (Forms), formatted messages (Texts), audio messages
> (AbstractSounds), and some others. Last but not least, it comprises a
> small API to host your bots in a background process of the image. For more
> information, check out the README.md of the repository in [1].
>
>
> *TelegramSmalltalkBot* is a second repository that implements a Telegram
> bot for evaluating Smalltalk expressions by using the TelegramBot framework
> from above. Do you know this situation when you wonder "how does XYZ work
> in Squeak" and cannot check it out because you do not have any PC or laptop
> at hand right now? This situation is history as of today, just send a
> message to the bot from wherever you are, just using your phone or even
> your watch! In a nutshell, TelegramSmalltalkBot is a simple REPL shell that
> utilizes the Squeak Compiler, but it's also packed with a number of
> convenient features that make remote access to your image much more
> pleasant. For example, the bot does not only answer plain text but also
> multi-media messages such as pictures or files depending on the results of
> your expressions. You can also use Workspace-like variable bindings or
> reply to older messages from the bot to bind the receiver of your message.
> For an exhaustive list of all features, visit the repository in [2] or just
> send /help to the bot. I also have uploaded a short video demo about it at
> [7].
>
>
> Another important thing to note is that TelegramSmalltalkBot is able to
> evaluate every expression in a sandboxed execution environment by using the
> SimulationStudio library I announced yesterday [3]. While both projects
> have grown rather independently of each other, this usage fills an
> important gap for me and I think it is a relevant real-world use case of
> the Sandbox.
>
>
> *Please try it out!** :-)* All you need is a Telegram account for free
> and a client (Telegram is available cross-platform and can also be used
> from the web). I am hosting an instance of the bot myself on my raspberry
> pi and I feel confident enough about the isolation quality of my Sandbox
> that I dare to unlock public access to the bot for everyone. A small
> architecture diagram which I have shown at the Winter Demos is in the
> attachments (contains clickable links to the repositories), you can also
> find it in the wiki of [2].
>
>
> Just search in the Telegram app for *@SqueakSmalltalkBot* or follow this
> link: https://t.me/SqueakSmalltalkBot [8] (QR code is also in the
> attachments) <https://t.me/SqueakSmalltalkBot>
>
>
> *I'm very much looking forward to your feedback!* If you experience any
> problems or have new ideas, please let me know via squeak-dev or GitHub
> issues! I'm already planning many new features for the bot - be sure to
> watch the repository if you are interested in them. :-)
>
>
> Best,
>
> Christoph
>
>
> [1] https://github.com/LinqLover/TelegramBot
> [2] https://github.com/LinqLover/TelegramSmalltalkBot
> [3]
> http://forum.world.st/ANN-SimulationStudio-and-sandboxed-execution-for-Squeak-td5127804.html
>
> [4]
> http://forum.world.st/Squeak-Winter-Demos-2021-03-06-3-p-m-6-p-m-CET-virtual-tp5126913.html
> [5] https://telegram.org
> [6] https://core.telegram.org/bots/api
> [7] https://youtu.be/HZCeThLqQmg
> [8] https://t.me/SqueakSmalltalkBot
>
>

-- 
_,,,^..^,,,_
best, Eliot
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