Allow for automatic setup of TLS for HTTPS

[papuSpartan]

In #948, users expressed that they wished to be able to use the webui using HTTPS. This PR enables a user to enable TLS, and effectively HTTPS, by adding one command line switch.

If --self-sign is passed with no arguments, it will attempt to generate a key/cert pair for the user and will also add the newly generated certificate to the certifi trust store. This means that, in most cases, the user can simply add --self-sign, and use TLS/HTTPS. Additionally, one can pass in their own key/cert pair using --tls-certfile and --tls-keyfile in order to add their own certificate to the certifi trust store without having to manually edit it themselves.

[RJSprod]

I rarely ever pull into my local before Auto approves, but this one I need. I've tried to figure out how to add HTTPS on my own and ran into all sort of noob issues that will take me longer to learn. Thanks for this!

[AUTOMATIC1111]

I'd very much prefer if this was an extension.

[papuSpartan]

Converting to -> extension

[papuSpartan]

@36DB Could you add my extension implementation for this PR to the extensions index?

[36DB]

@papuSpartan Sure but I would need the basic template. I have the permissions to add but have little knowledge to write it myself 😅
Reply me with the content that you would like to add to the json.

[papuSpartan]

@papuSpartan Sure but I would need the basic template. I have the permissions to add but have little knowledge to write it myself sweat_smile Reply me with the content that you would like to add to the json.

{
      "name": "Auto TLS/HTTPS",
      "url": "https://github.com/papuSpartan/stable-diffusion-webui-auto-tls-https.git",
      "description": "Automatically(Default) or semi-automatically enable HTTPS",
      "tags": [
        "script"
      ]
}

You would need to add that object to the main extensions array. For testing I just put it right at the end after "old localizations".

Tested on my machine by loading the modified index in the webui and it seemed to work properly.

[papuSpartan]

This is the modified version I was able to load in the webui: https://gist.github.com/papuSpartan/c32cb0f3c59ec15a7bbb7de56c056389.

Also, It might be helpful to save the extensions index file in a prettified format just so that it is easier to read straight from the wiki without something parsing it. (I used jq for this but any other json prettifier should work)

[36DB]

@ClashSAN Mind if you add this? I got some RL issues and probably can't add edit the file for few days.

[papuSpartan]

@ClashSAN Mind if you add this? I got some RL issues and probably can't add edit the file for few days.

Looks like someone added it to the list. Thanks