63 lines
3.2 KiB
Markdown
63 lines
3.2 KiB
Markdown
# μpub
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> micro social network, federated
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μpub aims to be a private, lightweight, modular and **secure** [ActivityPub](https://www.w3.org/TR/activitypub/) server
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μpub is currently being developed and can do most basic things, like posting notes, liking things, following others, deliveries and browsing
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all interactions must happen with ActivityPub's client-server methods (basically POST your activities to your outbox), and there's a simple frontend
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a test instance is _usually_ available at [feditest.alemi.dev](https://feditest.alemi.dev)
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upub's stock frontend is also being developed and can be viewed _usually_ at [feditest.alemi.dev/web](https://feditest.alemi.dev/web)
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## about security
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most activitypub implementations don't really validate fetches: knowing an activity/object id will allow anyone to resolve it on most fedi software. this is of course unacceptable: "security through obscurity" just doesn't work
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μpub correctly and rigorously implements and enforces access control on each object based on its addressing
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most instances will have "authorized fetch" which kind of makes the issue less bad, but anyone can host an actor, have any server download their pubkey and then start fetching
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μpub may be considered to have "authorized fetch" permanently on, except it depends on each post:
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* all posts marked public (meaning, addressed to "https://www.w3.org/ns/activitystreams#Public"), will be fetchable without any authorization
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* all posts not public will require explicit addressing and authentication: for example if post A is addressed to example.net/actor
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* anonymous fetchers will receive 404 on GET /posts/A
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* local users must authenticate and will be given said post only if it's addressed to them
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* remote servers will be given access to all posts from any of their users once they have authenticated themselves (with http signing)
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note that followers get expanded: addressing to example.net/actor/followers will address to anyone following actor that the server knows of, at that time
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## contributing
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all help is extremely welcome! if [my cgit](https://git.alemi.dev/upub.git/) looks too scary there's a [github mirror](https://github.com/alemidev/upub) you can open issues or PRs on. get in touch with me ([fedi](https://social.alemi.dev/users/alemi) is fine, but a mail works too), i'd be thrilled to showcase the project to you!
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## progress
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- [x] barebone actors
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- [x] barebone activities and objects
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- [x] activitystreams/activitypub compliance (well mostly)
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- [x] process barebones feeds
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- [x] process barebones inbox
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- [x] process barebones outbox
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- [x] http signatures
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- [x] privacy, targets, scopes
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- [x] simple web client
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- [ ] announce (boosts)
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- [ ] threads
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- [ ] editing
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- [ ] searching
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- [ ] media
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- [ ] user fields
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- [ ] mastodon api
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- [ ] hashtags, discovery
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- [ ] polls
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- [ ] lists
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- [ ] more optimized database schema
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## what about the name?
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μpub, sometimes stylyzed `upub`, is pronounced `mu-pub` (the `μ` stands for [micro](https://en.wikipedia.org/wiki/International_System_of_Units#Prefixes))
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## frontend
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upub aims to be compatible with multiple frontends via the mastodon api, but a simple custom ui is also being worked on
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