Merge branch 'feature/mrf-subchain' into 'develop'

MRF: subchain policy

See merge request pleroma/pleroma!1233
This commit is contained in:
kaniini 2019-06-04 05:49:54 +00:00
commit 9f0d0d0805
6 changed files with 95 additions and 2 deletions

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@ -49,6 +49,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
- OAuth: added job to clean expired access tokens
- MRF: Support for rejecting reports from specific instances (`mrf_simple`)
- MRF: Support for stripping avatars and banner images from specific instances (`mrf_simple`)
- MRF: Support for running subchains.
### Changed
- **Breaking:** Configuration: move from Pleroma.Mailer to Pleroma.Emails.Mailer

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@ -326,6 +326,8 @@
federated_timeline_removal: [],
replace: []
config :pleroma, :mrf_subchain, match_actor: %{}
config :pleroma, :rich_media, enabled: true
config :pleroma, :media_proxy,

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@ -86,6 +86,7 @@ config :pleroma, Pleroma.Emails.Mailer,
* `Pleroma.Web.ActivityPub.MRF.NoOpPolicy`: Doesnt modify activities (default)
* `Pleroma.Web.ActivityPub.MRF.DropPolicy`: Drops all activities. It generally doesnt makes sense to use in production
* `Pleroma.Web.ActivityPub.MRF.SimplePolicy`: Restrict the visibility of activities from certains instances (See ``:mrf_simple`` section)
* `Pleroma.Web.ActivityPub.MRF.SubchainPolicy`: Selectively runs other MRF policies when messages match (see ``:mrf_subchain`` section)
* `Pleroma.Web.ActivityPub.MRF.RejectNonPublic`: Drops posts with non-public visibility settings (See ``:mrf_rejectnonpublic`` section)
* `Pleroma.Web.ActivityPub.MRF.EnsureRePrepended`: Rewrites posts to ensure that replies to posts with subjects do not have an identical subject and instead begin with re:.
* `public`: Makes the client API in authentificated mode-only except for user-profiles. Useful for disabling the Local Timeline and The Whole Known Network.
@ -229,6 +230,21 @@ relates to mascots on the mastodon frontend
* `avatar_removal`: List of instances to strip avatars from
* `banner_removal`: List of instances to strip banners from
## :mrf_subchain
This policy processes messages through an alternate pipeline when a given message matches certain criteria.
All criteria are configured as a map of regular expressions to lists of policy modules.
* `match_actor`: Matches a series of regular expressions against the actor field.
Example:
```
config :pleroma, :mrf_subchain,
match_actor: %{
~r/https:\/\/example.com/s => [Pleroma.Web.ActivityPub.MRF.DropPolicy]
}
```
## :mrf_rejectnonpublic
* `allow_followersonly`: whether to allow followers-only posts
* `allow_direct`: whether to allow direct messages

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@ -5,8 +5,8 @@
defmodule Pleroma.Web.ActivityPub.MRF do
@callback filter(Map.t()) :: {:ok | :reject, Map.t()}
def filter(object) do
get_policies()
def filter(policies, %{} = object) do
policies
|> Enum.reduce({:ok, object}, fn
policy, {:ok, object} ->
policy.filter(object)
@ -16,6 +16,8 @@ def filter(object) do
end)
end
def filter(%{} = object), do: get_policies() |> filter(object)
def get_policies do
Pleroma.Config.get([:instance, :rewrite_policy], []) |> get_policies()
end

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@ -0,0 +1,40 @@
# Pleroma: A lightweight social networking server
# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.ActivityPub.MRF.SubchainPolicy do
alias Pleroma.Config
alias Pleroma.Web.ActivityPub.MRF
require Logger
@behaviour MRF
defp lookup_subchain(actor) do
with matches <- Config.get([:mrf_subchain, :match_actor]),
{match, subchain} <- Enum.find(matches, fn {k, _v} -> String.match?(actor, k) end) do
{:ok, match, subchain}
else
_e -> {:error, :notfound}
end
end
@impl true
def filter(%{"actor" => actor} = message) do
with {:ok, match, subchain} <- lookup_subchain(actor) do
Logger.debug(
"[SubchainPolicy] Matched #{actor} against #{inspect(match)} with subchain #{
inspect(subchain)
}"
)
subchain
|> MRF.filter(message)
else
_e -> {:ok, message}
end
end
@impl true
def filter(message), do: {:ok, message}
end

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@ -0,0 +1,32 @@
# Pleroma: A lightweight social networking server
# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.ActivityPub.MRF.SubchainPolicyTest do
use Pleroma.DataCase
alias Pleroma.Web.ActivityPub.MRF.DropPolicy
alias Pleroma.Web.ActivityPub.MRF.SubchainPolicy
@message %{
"actor" => "https://banned.com",
"type" => "Create",
"object" => %{"content" => "hi"}
}
test "it matches and processes subchains when the actor matches a configured target" do
Pleroma.Config.put([:mrf_subchain, :match_actor], %{
~r/^https:\/\/banned.com/s => [DropPolicy]
})
{:reject, _} = SubchainPolicy.filter(@message)
end
test "it doesn't match and process subchains when the actor doesn't match a configured target" do
Pleroma.Config.put([:mrf_subchain, :match_actor], %{
~r/^https:\/\/borked.com/s => [DropPolicy]
})
{:ok, _message} = SubchainPolicy.filter(@message)
end
end