A simple, minimalistic ActivityPub instance written in portable C
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artwork Moved avatars to artwork/. 2023-08-04 19:16:09 +02:00
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examples Updated FreeBSD rc script 2024-11-08 08:01:53 +00:00
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activitypub.c Omit the 'image' field if there are any attachment. 2024-11-07 20:04:02 +01:00
data.c Moved make_url() to data.c. 2024-11-07 22:00:25 +01:00
docker-compose.yaml Add docker-compose support, so a working development server with HTTPS can be started with: 2022-12-12 10:26:38 +00:00
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xs_openssl.h Updated copyright year. 2024-01-04 09:22:03 +01:00
xs_random.h Added -pedantic compilation flag. 2024-10-08 07:45:17 +02:00
xs_regex.h Backport from xs. 2024-08-30 19:10:26 +02:00
xs_set.h More migration work. 2024-09-20 10:47:14 +02:00
xs_socket.h Added support for listening on unix sockets. 2024-08-05 06:01:21 +02:00
xs_time.h Minor xs tweak. 2024-11-05 16:48:11 +01:00
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xs_url.h Fixed crash in xs_multipart_form_data() (from the tooot application). 2024-11-11 19:41:43 +01:00
xs_version.h Minor xs tweak. 2024-11-05 16:48:11 +01:00

snac

A simple, minimalistic ActivityPub instance

Features

  • Lightweight, minimal dependencies
  • Extensive support of ActivityPub operations, e.g. write public notes, follow users, be followed, reply to the notes of others, admire wonderful content (like or boost), write private messages...
  • Multiuser
  • Mastodon API support, so Mastodon-compatible apps can be used
  • Simple but effective web interface
  • Easily-accessed MUTE button to silence morons
  • Tested interoperability with related software
  • No database needed
  • Totally JavaScript-free
  • No cookies either
  • Not much bullshit

About

This program runs as a daemon (proxied by a TLS-enabled real httpd server) and provides the basic services for a Fediverse / ActivityPub instance (sharing messages and stuff from/to other systems like Mastodon, Pleroma, Friendica, etc.).

This is not the manual; man pages snac(1) (user manual), snac(5) (formats) and snac(8) (administrator manual) are what you are looking for.

snac stands for Social Networks Are Crap.

Building and installation

This program is written in highly portable C. The only external dependencies are openssl and curl.

On Debian/Ubuntu, you can satisfy these requirements by running

apt install libssl-dev libcurl4-openssl-dev

On OpenBSD you just need to install curl:

pkg_add curl

On FreeBSD, to install curl just type:

pkg install curl

On NetBSD, to install curl just type:

pkgin install curl

The source code is available here.

Run make and then make install as root.

If you're compiling on NetBSD, you should use the specific provided Makefile and run make -f Makefile.NetBSD and then make -f Makefile.NetBSD install as root.

From version 2.27, snac includes support for the Mastodon API; if you are not interested on it, you can compile it out by running

make CFLAGS=-DNO_MASTODON_API

If your compilation process complains about undefined references to shm_open() and shm_unlink() (it happens, for example, on Ubuntu 20.04.6 LTS), run it as:

make LDFLAGS=-lrt

If it still gives compilation errors (because your system does not implement the shared memory functions), you can fix it with

make CFLAGS=-DWITHOUT_SHM

See the administrator manual on how to proceed from here.

Testing via Docker

A docker-compose file is provided for development and testing. To start snac with an nginx HTTPS frontend, run:

docker-compose build && docker-compose up

This will:

  • Start snac, storing data in data/
  • Configure snac to listen on port 8001 with a server name of localhost (see examples/docker-entrypoint.sh)
  • Create a new user testuser and print the user's generated password on the console (see examples/docker-entrypoint.sh)
  • Start nginx to handle HTTPS, using the certificate pair from nginx-alpine-ssl/nginx-selfsigned.* (see examples/nginx-alpine-ssl/entrypoint.sh)

Incredibly awesome CSS themes for snac

License

See the LICENSE file for details.

Author

grunfink @grunfink@comam.es with the help of others.

Buy grunfink a coffee: https://ko-fi.com/grunfink