BBS: Some more functionality.

lib/pleroma/bbs/handler.ex

@@ -0,0 +1,130 @@
+defmodule Pleroma.BBS.Handler do
+  @moduledoc """
+  An example implementation of `Sshd.ShellHandler`, implementing a very simple
+  Read-Eval-Loop, that does nothing.
+  """
+  use Sshd.ShellHandler
+  alias Pleroma.Web.CommonAPI
+  alias Pleroma.Web.ActivityPub.ActivityPub
+
+  def on_shell(username, _pubkey, _ip, _port) do
+    :ok = IO.puts "Welcome to #{Pleroma.Config.get([:instance, :name])}!"
+    user = Pleroma.User.get_by_nickname(to_string(username))
+    Logger.debug("#{inspect user}")
+    loop(run_state([user: user]))
+  end
+
+  def on_connect(username, ip, port, method) do
+    Logger.debug fn ->
+      """
+      Incoming SSH shell #{inspect self()} requested for #{username} from #{inspect ip}:#{inspect port} using #{inspect method}
+      """
+    end
+  end
+
+  def on_disconnect(username, ip, port) do
+    Logger.debug fn ->
+      "Disconnecting SSH shell for #{username} from #{inspect ip}:#{inspect port}"
+    end
+  end
+
+  defp loop(state) do
+    self_pid = self()
+    counter  = state.counter
+    prefix   = state.prefix
+    user     = state.user
+
+    input = spawn(fn -> io_get(self_pid, prefix, counter, user.nickname) end)
+    wait_input state, input
+  end
+
+  def puts_activity(activity) do
+    status = Pleroma.Web.MastodonAPI.StatusView.render("status.json", %{activity: activity})
+    IO.puts("#{status.id} by #{status.account.display_name} (#{status.account.acct}):")
+    IO.puts(HtmlSanitizeEx.strip_tags(status.content))
+    IO.puts("")
+  end
+
+  def handle_command(state, "help") do
+    IO.puts("Available commands:")
+    IO.puts("help - This help")
+    IO.puts("home - Show the home timeline")
+    IO.puts("p <text> - Post the given text")
+    IO.puts("quit - Quit")
+
+    state
+  end
+
+  def handle_command(%{user: user} = state, "p " <> text) do
+    text = String.trim(text)
+
+    with {:ok, _activity} <- CommonAPI.post(user, %{"status" => text}) do
+      IO.puts("Posted!")
+    else
+      _e -> IO.puts("Could not post...")
+    end
+    state
+  end
+
+  def handle_command(state, "home") do
+    user = state.user
+    params =
+      %{}
+      |> Map.put("type", ["Create", "Announce"])
+      |> Map.put("blocking_user", user)
+      |> Map.put("muting_user", user)
+      |> Map.put("user", user)
+
+    activities =
+      [user.ap_id | user.following]
+      |> ActivityPub.fetch_activities(params)
+      |> ActivityPub.contain_timeline(user)
+      |> Enum.reverse()
+
+    Enum.each(activities, fn (activity) ->
+      puts_activity(activity)
+    end)
+
+    state
+  end
+
+  def handle_command(_state, command) do
+    IO.puts("Unknown command '#{command}'")
+  end
+
+  defp wait_input(state, input) do
+    receive do
+      {:input, ^input, "quit\n"} ->
+        IO.puts "Exiting..."
+
+      {:input, ^input, code} when is_binary(code) ->
+        code = String.trim(code)
+
+        handle_command(state, code)
+
+        loop(%{state | counter: state.counter + 1})
+
+      {:error, :interrupted} ->
+        IO.puts "Caught Ctrl+C..."
+        loop(%{state | counter: state.counter + 1})
+
+      {:input, ^input, msg} ->
+        :ok = Logger.warn "received unknown message: #{inspect msg}"
+        loop(%{state | counter: state.counter + 1})
+    end
+  end
+
+  defp run_state(opts) do
+    %{prefix: "pleroma", counter: 1, user: opts[:user]}
+  end
+
+  defp io_get(pid, prefix, counter, username) do
+    prompt = prompt(prefix, counter, username)
+    send pid, {:input, self(), IO.gets(:stdio, prompt)}
+  end
+
+  defp prompt(prefix, counter, username) do
+    prompt = "#{username}@#{prefix}:#{counter}>"
+    prompt <> " "
+  end
+end