akkoma/lib/pleroma/web/common_api/utils.ex
2020-12-28 12:02:16 +00:00

536 lines
15 KiB
Elixir

# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.CommonAPI.Utils do
import Pleroma.Web.Gettext
import Pleroma.Web.ControllerHelper, only: [truthy_param?: 1]
alias Calendar.Strftime
alias Pleroma.Activity
alias Pleroma.Config
alias Pleroma.Conversation.Participation
alias Pleroma.Formatter
alias Pleroma.Object
alias Pleroma.Repo
alias Pleroma.User
alias Pleroma.Web.ActivityPub.Utils
alias Pleroma.Web.ActivityPub.Visibility
alias Pleroma.Web.CommonAPI.ActivityDraft
alias Pleroma.Web.MediaProxy
alias Pleroma.Web.Plugs.AuthenticationPlug
require Logger
require Pleroma.Constants
def attachments_from_ids(%{media_ids: ids, descriptions: desc}) do
attachments_from_ids_descs(ids, desc)
end
def attachments_from_ids(%{media_ids: ids}) do
attachments_from_ids_no_descs(ids)
end
def attachments_from_ids(_), do: []
def attachments_from_ids_no_descs([]), do: []
def attachments_from_ids_no_descs(ids) do
Enum.map(ids, fn media_id ->
case Repo.get(Object, media_id) do
%Object{data: data} -> data
_ -> nil
end
end)
|> Enum.reject(&is_nil/1)
end
def attachments_from_ids_descs([], _), do: []
def attachments_from_ids_descs(ids, descs_str) do
{_, descs} = Jason.decode(descs_str)
Enum.map(ids, fn media_id ->
with %Object{data: data} <- Repo.get(Object, media_id) do
Map.put(data, "name", descs[media_id])
end
end)
|> Enum.reject(&is_nil/1)
end
@spec get_to_and_cc(ActivityDraft.t()) :: {list(String.t()), list(String.t())}
def get_to_and_cc(%{in_reply_to_conversation: %Participation{} = participation}) do
participation = Repo.preload(participation, :recipients)
{Enum.map(participation.recipients, & &1.ap_id), []}
end
def get_to_and_cc(%{visibility: visibility} = draft) when visibility in ["public", "local"] do
to =
case visibility do
"public" -> [Pleroma.Constants.as_public() | draft.mentions]
"local" -> [Pleroma.Constants.as_local_public() | draft.mentions]
end
cc = [draft.user.follower_address]
if draft.in_reply_to do
{Enum.uniq([draft.in_reply_to.data["actor"] | to]), cc}
else
{to, cc}
end
end
def get_to_and_cc(%{visibility: "unlisted"} = draft) do
to = [draft.user.follower_address | draft.mentions]
cc = [Pleroma.Constants.as_public()]
if draft.in_reply_to do
{Enum.uniq([draft.in_reply_to.data["actor"] | to]), cc}
else
{to, cc}
end
end
def get_to_and_cc(%{visibility: "private"} = draft) do
{to, cc} = get_to_and_cc(struct(draft, visibility: "direct"))
{[draft.user.follower_address | to], cc}
end
def get_to_and_cc(%{visibility: "direct"} = draft) do
# If the OP is a DM already, add the implicit actor.
if draft.in_reply_to && Visibility.is_direct?(draft.in_reply_to) do
{Enum.uniq([draft.in_reply_to.data["actor"] | draft.mentions]), []}
else
{draft.mentions, []}
end
end
def get_to_and_cc(%{visibility: {:list, _}, mentions: mentions}), do: {mentions, []}
def get_addressed_users(_, to) when is_list(to) do
User.get_ap_ids_by_nicknames(to)
end
def get_addressed_users(mentioned_users, _), do: mentioned_users
def maybe_add_list_data(activity_params, user, {:list, list_id}) do
case Pleroma.List.get(list_id, user) do
%Pleroma.List{} = list ->
activity_params
|> put_in([:additional, "bcc"], [list.ap_id])
|> put_in([:additional, "listMessage"], list.ap_id)
|> put_in([:object, "listMessage"], list.ap_id)
_ ->
activity_params
end
end
def maybe_add_list_data(activity_params, _, _), do: activity_params
def make_poll_data(%{"poll" => %{"expires_in" => expires_in}} = data)
when is_binary(expires_in) do
# In some cases mastofe sends out strings instead of integers
data
|> put_in(["poll", "expires_in"], String.to_integer(expires_in))
|> make_poll_data()
end
def make_poll_data(%{poll: %{options: options, expires_in: expires_in}} = data)
when is_list(options) do
limits = Config.get([:instance, :poll_limits])
with :ok <- validate_poll_expiration(expires_in, limits),
:ok <- validate_poll_options_amount(options, limits),
:ok <- validate_poll_options_length(options, limits) do
{option_notes, emoji} =
Enum.map_reduce(options, %{}, fn option, emoji ->
note = %{
"name" => option,
"type" => "Note",
"replies" => %{"type" => "Collection", "totalItems" => 0}
}
{note, Map.merge(emoji, Pleroma.Emoji.Formatter.get_emoji_map(option))}
end)
end_time =
DateTime.utc_now()
|> DateTime.add(expires_in)
|> DateTime.to_iso8601()
key = if truthy_param?(data.poll[:multiple]), do: "anyOf", else: "oneOf"
poll = %{"type" => "Question", key => option_notes, "closed" => end_time}
{:ok, {poll, emoji}}
end
end
def make_poll_data(%{"poll" => poll}) when is_map(poll) do
{:error, "Invalid poll"}
end
def make_poll_data(_data) do
{:ok, {%{}, %{}}}
end
defp validate_poll_options_amount(options, %{max_options: max_options}) do
if Enum.count(options) > max_options do
{:error, "Poll can't contain more than #{max_options} options"}
else
:ok
end
end
defp validate_poll_options_length(options, %{max_option_chars: max_option_chars}) do
if Enum.any?(options, &(String.length(&1) > max_option_chars)) do
{:error, "Poll options cannot be longer than #{max_option_chars} characters each"}
else
:ok
end
end
defp validate_poll_expiration(expires_in, %{min_expiration: min, max_expiration: max}) do
cond do
expires_in > max -> {:error, "Expiration date is too far in the future"}
expires_in < min -> {:error, "Expiration date is too soon"}
true -> :ok
end
end
def make_content_html(%ActivityDraft{} = draft) do
attachment_links =
draft.params
|> Map.get("attachment_links", Config.get([:instance, :attachment_links]))
|> truthy_param?()
content_type = get_content_type(draft.params[:content_type])
options =
if draft.visibility == "direct" && Config.get([:instance, :safe_dm_mentions]) do
[safe_mention: true]
else
[]
end
draft.status
|> format_input(content_type, options)
|> maybe_add_attachments(draft.attachments, attachment_links)
|> maybe_add_nsfw_tag(draft.params)
end
defp get_content_type(content_type) do
if Enum.member?(Config.get([:instance, :allowed_post_formats]), content_type) do
content_type
else
"text/plain"
end
end
defp maybe_add_nsfw_tag({text, mentions, tags}, %{"sensitive" => sensitive})
when sensitive in [true, "True", "true", "1"] do
{text, mentions, [{"#nsfw", "nsfw"} | tags]}
end
defp maybe_add_nsfw_tag(data, _), do: data
def make_context(_, %Participation{} = participation) do
Repo.preload(participation, :conversation).conversation.ap_id
end
def make_context(%Activity{data: %{"context" => context}}, _), do: context
def make_context(_, _), do: Utils.generate_context_id()
def maybe_add_attachments(parsed, _attachments, false = _no_links), do: parsed
def maybe_add_attachments({text, mentions, tags}, attachments, _no_links) do
text = add_attachments(text, attachments)
{text, mentions, tags}
end
def add_attachments(text, attachments) do
attachment_text = Enum.map(attachments, &build_attachment_link/1)
Enum.join([text | attachment_text], "<br>")
end
defp build_attachment_link(%{"url" => [%{"href" => href} | _]} = attachment) do
name = attachment["name"] || URI.decode(Path.basename(href))
href = MediaProxy.url(href)
"<a href=\"#{href}\" class='attachment'>#{shortname(name)}</a>"
end
defp build_attachment_link(_), do: ""
def format_input(text, format, options \\ [])
@doc """
Formatting text to plain text, BBCode, HTML, or Markdown
"""
def format_input(text, "text/plain", options) do
text
|> Formatter.html_escape("text/plain")
|> Formatter.linkify(options)
|> (fn {text, mentions, tags} ->
{String.replace(text, ~r/\r?\n/, "<br>"), mentions, tags}
end).()
end
def format_input(text, "text/bbcode", options) do
text
|> String.replace(~r/\r/, "")
|> Formatter.html_escape("text/plain")
|> BBCode.to_html()
|> (fn {:ok, html} -> html end).()
|> Formatter.linkify(options)
end
def format_input(text, "text/html", options) do
text
|> Formatter.html_escape("text/html")
|> Formatter.linkify(options)
end
def format_input(text, "text/markdown", options) do
text
|> Formatter.mentions_escape(options)
|> Earmark.as_html!(%Earmark.Options{renderer: Pleroma.EarmarkRenderer})
|> Formatter.linkify(options)
|> Formatter.html_escape("text/html")
end
def make_note_data(%ActivityDraft{} = draft) do
%{
"type" => "Note",
"to" => draft.to,
"cc" => draft.cc,
"content" => draft.content_html,
"summary" => draft.summary,
"sensitive" => draft.sensitive,
"context" => draft.context,
"attachment" => draft.attachments,
"actor" => draft.user.ap_id,
"tag" => Keyword.values(draft.tags) |> Enum.uniq()
}
|> add_in_reply_to(draft.in_reply_to)
|> Map.merge(draft.extra)
end
defp add_in_reply_to(object, nil), do: object
defp add_in_reply_to(object, in_reply_to) do
with %Object{} = in_reply_to_object <- Object.normalize(in_reply_to) do
Map.put(object, "inReplyTo", in_reply_to_object.data["id"])
else
_ -> object
end
end
def format_naive_asctime(date) do
date |> DateTime.from_naive!("Etc/UTC") |> format_asctime
end
def format_asctime(date) do
Strftime.strftime!(date, "%a %b %d %H:%M:%S %z %Y")
end
def date_to_asctime(date) when is_binary(date) do
with {:ok, date, _offset} <- DateTime.from_iso8601(date) do
format_asctime(date)
else
_e ->
Logger.warn("Date #{date} in wrong format, must be ISO 8601")
""
end
end
def date_to_asctime(date) do
Logger.warn("Date #{date} in wrong format, must be ISO 8601")
""
end
def to_masto_date(%NaiveDateTime{} = date) do
date
|> NaiveDateTime.to_iso8601()
|> String.replace(~r/(\.\d+)?$/, ".000Z", global: false)
end
def to_masto_date(date) when is_binary(date) do
with {:ok, date} <- NaiveDateTime.from_iso8601(date) do
to_masto_date(date)
else
_ -> ""
end
end
def to_masto_date(_), do: ""
defp shortname(name) do
with max_length when max_length > 0 <-
Config.get([Pleroma.Upload, :filename_display_max_length], 30),
true <- String.length(name) > max_length do
String.slice(name, 0..max_length) <> ""
else
_ -> name
end
end
@spec confirm_current_password(User.t(), String.t()) :: {:ok, User.t()} | {:error, String.t()}
def confirm_current_password(user, password) do
with %User{local: true} = db_user <- User.get_cached_by_id(user.id),
true <- AuthenticationPlug.checkpw(password, db_user.password_hash) do
{:ok, db_user}
else
_ -> {:error, dgettext("errors", "Invalid password.")}
end
end
def maybe_notify_to_recipients(
recipients,
%Activity{data: %{"to" => to, "type" => _type}} = _activity
) do
recipients ++ to
end
def maybe_notify_to_recipients(recipients, _), do: recipients
def maybe_notify_mentioned_recipients(
recipients,
%Activity{data: %{"to" => _to, "type" => type} = data} = activity
)
when type == "Create" do
object = Object.normalize(activity, false)
object_data =
cond do
not is_nil(object) ->
object.data
is_map(data["object"]) ->
data["object"]
true ->
%{}
end
tagged_mentions = maybe_extract_mentions(object_data)
recipients ++ tagged_mentions
end
def maybe_notify_mentioned_recipients(recipients, _), do: recipients
# Do not notify subscribers if author is making a reply
def maybe_notify_subscribers(recipients, %Activity{
object: %Object{data: %{"inReplyTo" => _ap_id}}
}) do
recipients
end
def maybe_notify_subscribers(
recipients,
%Activity{data: %{"actor" => actor, "type" => type}} = activity
)
when type == "Create" do
with %User{} = user <- User.get_cached_by_ap_id(actor) do
subscriber_ids =
user
|> User.subscriber_users()
|> Enum.filter(&Visibility.visible_for_user?(activity, &1))
|> Enum.map(& &1.ap_id)
recipients ++ subscriber_ids
else
_e -> recipients
end
end
def maybe_notify_subscribers(recipients, _), do: recipients
def maybe_notify_followers(recipients, %Activity{data: %{"type" => "Move"}} = activity) do
with %User{} = user <- User.get_cached_by_ap_id(activity.actor) do
user
|> User.get_followers()
|> Enum.map(& &1.ap_id)
|> Enum.concat(recipients)
else
_e -> recipients
end
end
def maybe_notify_followers(recipients, _), do: recipients
def maybe_extract_mentions(%{"tag" => tag}) do
tag
|> Enum.filter(fn x -> is_map(x) && x["type"] == "Mention" end)
|> Enum.map(fn x -> x["href"] end)
|> Enum.uniq()
end
def maybe_extract_mentions(_), do: []
def make_report_content_html(nil), do: {:ok, {nil, [], []}}
def make_report_content_html(comment) do
max_size = Config.get([:instance, :max_report_comment_size], 1000)
if String.length(comment) <= max_size do
{:ok, format_input(comment, "text/plain")}
else
{:error,
dgettext("errors", "Comment must be up to %{max_size} characters", max_size: max_size)}
end
end
def get_report_statuses(%User{ap_id: actor}, %{status_ids: status_ids})
when is_list(status_ids) do
{:ok, Activity.all_by_actor_and_id(actor, status_ids)}
end
def get_report_statuses(_, _), do: {:ok, nil}
# DEPRECATED mostly, context objects are now created at insertion time.
def context_to_conversation_id(context) do
with %Object{id: id} <- Object.get_cached_by_ap_id(context) do
id
else
_e ->
changeset = Object.context_mapping(context)
case Repo.insert(changeset) do
{:ok, %{id: id}} ->
id
# This should be solved by an upsert, but it seems ecto
# has problems accessing the constraint inside the jsonb.
{:error, _} ->
Object.get_cached_by_ap_id(context).id
end
end
end
def conversation_id_to_context(id) do
with %Object{data: %{"id" => context}} <- Repo.get(Object, id) do
context
else
_e ->
{:error, dgettext("errors", "No such conversation")}
end
end
def validate_character_limit("" = _full_payload, [] = _attachments) do
{:error, dgettext("errors", "Cannot post an empty status without attachments")}
end
def validate_character_limit(full_payload, _attachments) do
limit = Config.get([:instance, :limit])
length = String.length(full_payload)
if length <= limit do
:ok
else
{:error, dgettext("errors", "The status is over the character limit")}
end
end
end