@alienghic Here's the source: https://github.com/snikket-im
Since I don't understand Prosody well enough to answer your question.
076萌SNS is a social network, courtesy of 076. It runs on GNU social, version 2.0.2-beta0, available under the GNU Affero General Public License.
All 076萌SNS content and data are available under the Creative Commons Attribution 3.0 license.