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| author | dcc <dcc@logografos.com> | 2023-09-02 00:52:52 -0700 |
|---|---|---|
| committer | dcc <dcc@logografos.com> | 2023-09-02 00:52:52 -0700 |
| commit | 3a4773c3c2bd0bbef244eb519b07208da9108e49 (patch) | |
| tree | 973567a6f3abb37bfb0f785b1cad14ed55840ef5 /lib/pleroma/gopher/server.ex | |
| download | anni-3a4773c3c2bd0bbef244eb519b07208da9108e49.tar.gz anni-3a4773c3c2bd0bbef244eb519b07208da9108e49.tar.bz2 anni-3a4773c3c2bd0bbef244eb519b07208da9108e49.zip | |
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Diffstat (limited to 'lib/pleroma/gopher/server.ex')
| -rw-r--r-- | lib/pleroma/gopher/server.ex | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/lib/pleroma/gopher/server.ex b/lib/pleroma/gopher/server.ex new file mode 100644 index 0000000..0fde0ad --- /dev/null +++ b/lib/pleroma/gopher/server.ex @@ -0,0 +1,162 @@ +# Pleroma: A lightweight social networking server +# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/> +# SPDX-License-Identifier: AGPL-3.0-only + +defmodule Pleroma.Gopher.Server do + use GenServer + require Logger + + def start_link(_) do + config = Pleroma.Config.get(:gopher, []) + ip = Keyword.get(config, :ip, {0, 0, 0, 0}) + port = Keyword.get(config, :port, 1234) + + if Keyword.get(config, :enabled, false) do + GenServer.start_link(__MODULE__, [ip, port], []) + else + Logger.info("Gopher server disabled") + :ignore + end + end + + def init([ip, port]) do + Logger.info("Starting gopher server on #{port}") + + :ranch.start_listener( + :gopher, + 100, + :ranch_tcp, + [ip: ip, port: port], + __MODULE__.ProtocolHandler, + [] + ) + + {:ok, %{ip: ip, port: port}} + end +end + +defmodule Pleroma.Gopher.Server.ProtocolHandler do + alias Pleroma.Activity + alias Pleroma.HTML + alias Pleroma.Object + alias Pleroma.User + alias Pleroma.Web.ActivityPub.ActivityPub + alias Pleroma.Web.ActivityPub.Visibility + + def start_link(ref, socket, transport, opts) do + pid = spawn_link(__MODULE__, :init, [ref, socket, transport, opts]) + {:ok, pid} + end + + def init(ref, socket, transport, [] = _Opts) do + :ok = :ranch.accept_ack(ref) + loop(socket, transport) + end + + def info(text) do + text = String.replace(text, ~r/[\t\n]/, "") + + String.split(text, "\r") + |> Enum.map(fn text -> + "i#{text}\tfake\t(NULL)\t0\r\n" + end) + |> Enum.join("") + end + + def link(name, selector, type \\ 1) do + address = Pleroma.Web.Endpoint.host() + port = Pleroma.Config.get([:gopher, :port], 1234) + dstport = Pleroma.Config.get([:gopher, :dstport], port) + "#{type}#{name}\t#{selector}\t#{address}\t#{dstport}\r\n" + end + + def render_activities(activities) do + activities + |> Enum.reverse() + |> Enum.map(fn activity -> + user = User.get_cached_by_ap_id(activity.data["actor"]) + + object = Object.normalize(activity, fetch: false) + like_count = object.data["like_count"] || 0 + announcement_count = object.data["announcement_count"] || 0 + + link("Post ##{activity.id} by #{user.nickname}", "/notices/#{activity.id}") <> + info("#{like_count} likes, #{announcement_count} repeats") <> + "i\tfake\t(NULL)\t0\r\n" <> + info(HTML.strip_tags(String.replace(object.data["content"], "<br>", "\r"))) + end) + |> Enum.join("i\tfake\t(NULL)\t0\r\n") + end + + def response("") do + info("Welcome to #{Pleroma.Config.get([:instance, :name], "Pleroma")}!") <> + link("Public Timeline", "/main/public") <> + link("Federated Timeline", "/main/all") <> ".\r\n" + end + + def response("/main/public") do + posts = + %{type: ["Create"], local_only: true} + |> ActivityPub.fetch_public_activities() + |> render_activities() + + info("Welcome to the Public Timeline!") <> posts <> ".\r\n" + end + + def response("/main/all") do + posts = + %{type: ["Create"]} + |> ActivityPub.fetch_public_activities() + |> render_activities() + + info("Welcome to the Federated Timeline!") <> posts <> ".\r\n" + end + + def response("/notices/" <> id) do + with %Activity{} = activity <- Activity.get_by_id(id), + true <- Visibility.is_public?(activity) do + activities = + ActivityPub.fetch_activities_for_context(activity.data["context"]) + |> render_activities + + user = User.get_cached_by_ap_id(activity.data["actor"]) + + info("Post #{activity.id} by #{user.nickname}") <> + link("More posts by #{user.nickname}", "/users/#{user.nickname}") <> activities <> ".\r\n" + else + _e -> + info("Not public") <> ".\r\n" + end + end + + def response("/users/" <> nickname) do + with %User{} = user <- User.get_cached_by_nickname(nickname) do + params = %{ + type: ["Create"], + actor_id: user.ap_id + } + + activities = + params + |> ActivityPub.fetch_public_activities() + |> render_activities() + + info("Posts by #{user.nickname}") <> activities <> ".\r\n" + else + _e -> + info("No such user") <> ".\r\n" + end + end + + def loop(socket, transport) do + case transport.recv(socket, 0, 5000) do + {:ok, data} -> + data = String.trim_trailing(data, "\r\n") + transport.send(socket, response(data)) + :ok = transport.close(socket) + + _ -> + :ok = transport.close(socket) + end + end +end |
