Pleroma/lib/pleroma/user.ex

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# Pleroma: A lightweight social networking server
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# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.User do
use Ecto.Schema
import Ecto.{Changeset, Query}
alias Pleroma.{Repo, User, Object, Web, Activity, Notification}
alias Comeonin.Pbkdf2
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alias Pleroma.Formatter
alias Pleroma.Web.CommonAPI.Utils, as: CommonUtils
alias Pleroma.Web.{OStatus, Websub, OAuth}
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alias Pleroma.Web.ActivityPub.{Utils, ActivityPub}
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require Logger
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@type t :: %__MODULE__{}
@email_regex ~r/^[a-zA-Z0-9.!#$%&'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/
@strict_local_nickname_regex ~r/^[a-zA-Z\d]+$/
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@extended_local_nickname_regex ~r/^[a-zA-Z\d_-]+$/
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schema "users" do
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field(:bio, :string)
field(:email, :string)
field(:name, :string)
field(:nickname, :string)
field(:password_hash, :string)
field(:password, :string, virtual: true)
field(:password_confirmation, :string, virtual: true)
field(:following, {:array, :string}, default: [])
field(:ap_id, :string)
field(:avatar, :map)
field(:local, :boolean, default: true)
field(:follower_address, :string)
field(:search_distance, :float, virtual: true)
field(:tags, {:array, :string}, default: [])
field(:last_refreshed_at, :naive_datetime)
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has_many(:notifications, Notification)
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embeds_one(:info, Pleroma.User.Info)
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timestamps()
end
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def auth_active?(%User{} = user) do
(user.info && !user.info.confirmation_pending) ||
!Pleroma.Config.get([:instance, :account_activation_required])
end
def remote_or_auth_active?(%User{} = user), do: !user.local || auth_active?(user)
def visible_for?(%User{} = user, for_user \\ nil) do
User.remote_or_auth_active?(user) || (for_user && for_user.id == user.id) ||
User.superuser?(for_user)
end
def superuser?(nil), do: false
def superuser?(%User{} = user), do: user.info && User.Info.superuser?(user.info)
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def avatar_url(user) do
case user.avatar do
%{"url" => [%{"href" => href} | _]} -> href
_ -> "#{Web.base_url()}/images/avi.png"
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end
end
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def banner_url(user) do
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case user.info.banner do
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%{"url" => [%{"href" => href} | _]} -> href
_ -> "#{Web.base_url()}/images/banner.png"
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end
end
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def profile_url(%User{info: %{source_data: %{"url" => url}}}), do: url
def profile_url(%User{ap_id: ap_id}), do: ap_id
def profile_url(_), do: nil
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def ap_id(%User{nickname: nickname}) do
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"#{Web.base_url()}/users/#{nickname}"
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end
def ap_followers(%User{} = user) do
"#{ap_id(user)}/followers"
end
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def follow_changeset(struct, params \\ %{}) do
struct
|> cast(params, [:following])
|> validate_required([:following])
end
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def user_info(%User{} = user) do
oneself = if user.local, do: 1, else: 0
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%{
following_count: length(user.following) - oneself,
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note_count: user.info.note_count,
follower_count: user.info.follower_count,
locked: user.info.locked,
confirmation_pending: user.info.confirmation_pending,
default_scope: user.info.default_scope
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}
end
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def remote_user_creation(params) do
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params =
params
|> Map.put(:info, params[:info] || %{})
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info_cng = User.Info.remote_user_creation(%User.Info{}, params[:info])
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changes =
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%User{}
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|> cast(params, [:bio, :name, :ap_id, :nickname, :avatar])
|> validate_required([:name, :ap_id])
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|> unique_constraint(:nickname)
|> validate_format(:nickname, @email_regex)
|> validate_length(:bio, max: 5000)
|> validate_length(:name, max: 100)
|> put_change(:local, false)
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|> put_embed(:info, info_cng)
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if changes.valid? do
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case info_cng.changes[:source_data] do
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%{"followers" => followers} ->
changes
|> put_change(:follower_address, followers)
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_ ->
followers = User.ap_followers(%User{nickname: changes.changes[:nickname]})
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changes
|> put_change(:follower_address, followers)
end
else
changes
end
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end
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def update_changeset(struct, params \\ %{}) do
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struct
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|> cast(params, [:bio, :name, :avatar])
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|> unique_constraint(:nickname)
|> validate_format(:nickname, local_nickname_regex())
|> validate_length(:bio, max: 5000)
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|> validate_length(:name, min: 1, max: 100)
end
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def upgrade_changeset(struct, params \\ %{}) do
params =
params
|> Map.put(:last_refreshed_at, NaiveDateTime.utc_now())
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info_cng =
struct.info
|> User.Info.user_upgrade(params[:info])
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struct
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|> cast(params, [:bio, :name, :follower_address, :avatar, :last_refreshed_at])
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|> unique_constraint(:nickname)
|> validate_format(:nickname, local_nickname_regex())
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|> validate_length(:bio, max: 5000)
|> validate_length(:name, max: 100)
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|> put_embed(:info, info_cng)
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end
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def password_update_changeset(struct, params) do
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changeset =
struct
|> cast(params, [:password, :password_confirmation])
|> validate_required([:password, :password_confirmation])
|> validate_confirmation(:password)
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OAuth.Token.delete_user_tokens(struct)
OAuth.Authorization.delete_user_authorizations(struct)
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if changeset.valid? do
hashed = Pbkdf2.hashpwsalt(changeset.changes[:password])
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changeset
|> put_change(:password_hash, hashed)
else
changeset
end
end
def reset_password(user, data) do
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update_and_set_cache(password_update_changeset(user, data))
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end
def register_changeset(struct, params \\ %{}, opts \\ []) do
confirmation_status =
if opts[:confirmed] || !Pleroma.Config.get([:instance, :account_activation_required]) do
:confirmed
else
:unconfirmed
end
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info_change = User.Info.confirmation_changeset(%User.Info{}, confirmation_status)
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changeset =
struct
|> cast(params, [:bio, :email, :name, :nickname, :password, :password_confirmation])
|> validate_required([:email, :name, :nickname, :password, :password_confirmation])
|> validate_confirmation(:password)
|> unique_constraint(:email)
|> unique_constraint(:nickname)
|> validate_exclusion(:nickname, Pleroma.Config.get([Pleroma.User, :restricted_nicknames]))
|> validate_format(:nickname, local_nickname_regex())
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|> validate_format(:email, @email_regex)
|> validate_length(:bio, max: 1000)
|> validate_length(:name, min: 1, max: 100)
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|> put_change(:info, info_change)
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if changeset.valid? do
hashed = Pbkdf2.hashpwsalt(changeset.changes[:password])
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ap_id = User.ap_id(%User{nickname: changeset.changes[:nickname]})
followers = User.ap_followers(%User{nickname: changeset.changes[:nickname]})
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changeset
|> put_change(:password_hash, hashed)
|> put_change(:ap_id, ap_id)
|> put_change(:following, [followers])
|> put_change(:follower_address, followers)
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else
changeset
end
end
@doc "Inserts provided changeset, performs post-registration actions (confirmation email sending etc.)"
def register(%Ecto.Changeset{} = changeset) do
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with {:ok, user} <- Repo.insert(changeset),
{:ok, _} = try_send_confirmation_email(user) do
{:ok, user}
end
end
def try_send_confirmation_email(%User{} = user) do
if user.info.confirmation_pending &&
Pleroma.Config.get([:instance, :account_activation_required]) do
user
|> Pleroma.UserEmail.account_confirmation_email()
|> Pleroma.Mailer.deliver()
else
{:ok, :noop}
end
end
def needs_update?(%User{local: true}), do: false
def needs_update?(%User{local: false, last_refreshed_at: nil}), do: true
def needs_update?(%User{local: false} = user) do
NaiveDateTime.diff(NaiveDateTime.utc_now(), user.last_refreshed_at) >= 86400
end
def needs_update?(_), do: true
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def maybe_direct_follow(%User{} = follower, %User{local: true, info: %{locked: true}}) do
{:ok, follower}
end
def maybe_direct_follow(%User{} = follower, %User{local: true} = followed) do
follow(follower, followed)
end
def maybe_direct_follow(%User{} = follower, %User{} = followed) do
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if not User.ap_enabled?(followed) do
follow(follower, followed)
else
{:ok, follower}
end
end
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def maybe_follow(%User{} = follower, %User{info: _info} = followed) do
if not following?(follower, followed) do
follow(follower, followed)
else
{:ok, follower}
end
end
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def follow(%User{} = follower, %User{info: info} = followed) do
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user_config = Application.get_env(:pleroma, :user)
deny_follow_blocked = Keyword.get(user_config, :deny_follow_blocked)
ap_followers = followed.follower_address
cond do
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following?(follower, followed) or info.deactivated ->
{:error, "Could not follow user: #{followed.nickname} is already on your list."}
deny_follow_blocked and blocks?(followed, follower) ->
{:error, "Could not follow user: #{followed.nickname} blocked you."}
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true ->
if !followed.local && follower.local && !ap_enabled?(followed) do
Websub.subscribe(follower, followed)
end
following =
[ap_followers | follower.following]
|> Enum.uniq()
follower =
follower
|> follow_changeset(%{following: following})
|> update_and_set_cache
{:ok, _} = update_follower_count(followed)
follower
end
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end
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def unfollow(%User{} = follower, %User{} = followed) do
ap_followers = followed.follower_address
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if following?(follower, followed) and follower.ap_id != followed.ap_id do
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following =
follower.following
|> List.delete(ap_followers)
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{:ok, follower} =
follower
|> follow_changeset(%{following: following})
|> update_and_set_cache
{:ok, followed} = update_follower_count(followed)
{:ok, follower, Utils.fetch_latest_follow(follower, followed)}
else
{:error, "Not subscribed!"}
end
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end
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@spec following?(User.t(), User.t()) :: boolean
def following?(%User{} = follower, %User{} = followed) do
Enum.member?(follower.following, followed.follower_address)
end
def follow_import(%User{} = follower, followed_identifiers)
when is_list(followed_identifiers) do
Enum.map(
followed_identifiers,
fn followed_identifier ->
with %User{} = followed <- get_or_fetch(followed_identifier),
{:ok, follower} <- maybe_direct_follow(follower, followed),
{:ok, _} <- ActivityPub.follow(follower, followed) do
followed
else
err ->
Logger.debug("follow_import failed for #{followed_identifier} with: #{inspect(err)}")
err
end
end
)
end
def locked?(%User{} = user) do
user.info.locked || false
end
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def get_by_ap_id(ap_id) do
Repo.get_by(User, ap_id: ap_id)
end
# This is mostly an SPC migration fix. This guesses the user nickname (by taking the last part of the ap_id and the domain) and tries to get that user
def get_by_guessed_nickname(ap_id) do
domain = URI.parse(ap_id).host
name = List.last(String.split(ap_id, "/"))
nickname = "#{name}@#{domain}"
get_by_nickname(nickname)
end
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def update_and_set_cache(changeset) do
with {:ok, user} <- Repo.update(changeset) do
Cachex.put(:user_cache, "ap_id:#{user.ap_id}", user)
Cachex.put(:user_cache, "nickname:#{user.nickname}", user)
Cachex.put(:user_cache, "user_info:#{user.id}", user_info(user))
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{:ok, user}
else
e -> e
end
end
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def invalidate_cache(user) do
Cachex.del(:user_cache, "ap_id:#{user.ap_id}")
Cachex.del(:user_cache, "nickname:#{user.nickname}")
Cachex.del(:user_cache, "user_info:#{user.id}")
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end
def get_cached_by_ap_id(ap_id) do
key = "ap_id:#{ap_id}"
Cachex.fetch!(:user_cache, key, fn _ -> get_by_ap_id(ap_id) end)
end
def get_cached_by_nickname(nickname) do
key = "nickname:#{nickname}"
Cachex.fetch!(:user_cache, key, fn _ -> get_or_fetch_by_nickname(nickname) end)
end
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def get_by_nickname(nickname) do
Repo.get_by(User, nickname: nickname) ||
if Regex.match?(~r(@#{Pleroma.Web.Endpoint.host()})i, nickname) do
[local_nickname, _] = String.split(nickname, "@")
Repo.get_by(User, nickname: local_nickname)
end
end
def get_by_nickname_or_email(nickname_or_email) do
case user = Repo.get_by(User, nickname: nickname_or_email) do
%User{} -> user
nil -> Repo.get_by(User, email: nickname_or_email)
end
end
def get_cached_user_info(user) do
key = "user_info:#{user.id}"
Cachex.fetch!(:user_cache, key, fn _ -> user_info(user) end)
end
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def fetch_by_nickname(nickname) do
ap_try = ActivityPub.make_user_from_nickname(nickname)
case ap_try do
{:ok, user} -> {:ok, user}
_ -> OStatus.make_user(nickname)
end
end
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def get_or_fetch_by_nickname(nickname) do
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with %User{} = user <- get_by_nickname(nickname) do
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user
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else
_e ->
with [_nick, _domain] <- String.split(nickname, "@"),
{:ok, user} <- fetch_by_nickname(nickname) do
user
else
_e -> nil
end
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end
end
def get_followers_query(%User{id: id, follower_address: follower_address}) do
from(
u in User,
where: fragment("? <@ ?", ^[follower_address], u.following),
where: u.id != ^id
)
end
def get_followers(user) do
q = get_followers_query(user)
{:ok, Repo.all(q)}
end
def get_friends_query(%User{id: id, following: following}) do
from(
u in User,
where: u.follower_address in ^following,
where: u.id != ^id
)
end
def get_friends(user) do
q = get_friends_query(user)
{:ok, Repo.all(q)}
end
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def get_follow_requests_query(%User{} = user) do
from(
a in Activity,
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where:
fragment(
"? ->> 'type' = 'Follow'",
a.data
),
where:
fragment(
"? ->> 'state' = 'pending'",
a.data
),
where:
fragment(
"? @> ?",
a.data,
^%{"object" => user.ap_id}
)
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)
end
def get_follow_requests(%User{} = user) do
q = get_follow_requests_query(user)
reqs = Repo.all(q)
users =
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Enum.map(reqs, fn req -> req.actor end)
|> Enum.uniq()
|> Enum.map(fn ap_id -> get_by_ap_id(ap_id) end)
|> Enum.filter(fn u -> !is_nil(u) end)
|> Enum.filter(fn u -> !following?(u, user) end)
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{:ok, users}
end
def increase_note_count(%User{} = user) do
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info_cng = User.Info.add_to_note_count(user.info, 1)
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cng =
change(user)
|> put_embed(:info, info_cng)
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update_and_set_cache(cng)
end
def decrease_note_count(%User{} = user) do
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info_cng = User.Info.add_to_note_count(user.info, -1)
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cng =
change(user)
|> put_embed(:info, info_cng)
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update_and_set_cache(cng)
end
def update_note_count(%User{} = user) do
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note_count_query =
from(
a in Object,
where: fragment("?->>'actor' = ? and ?->>'type' = 'Note'", a.data, ^user.ap_id, a.data),
select: count(a.id)
)
note_count = Repo.one(note_count_query)
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info_cng = User.Info.set_note_count(user.info, note_count)
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cng =
change(user)
|> put_embed(:info, info_cng)
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update_and_set_cache(cng)
end
def update_follower_count(%User{} = user) do
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follower_count_query =
from(
u in User,
where: ^user.follower_address in u.following,
where: u.id != ^user.id,
select: count(u.id)
)
follower_count = Repo.one(follower_count_query)
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info_cng =
user.info
|> User.Info.set_follower_count(follower_count)
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cng =
change(user)
|> put_embed(:info, info_cng)
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update_and_set_cache(cng)
end
def get_users_from_set_query(ap_ids, false) do
from(
u in User,
where: u.ap_id in ^ap_ids
)
end
def get_users_from_set_query(ap_ids, true) do
query = get_users_from_set_query(ap_ids, false)
from(
u in query,
where: u.local == true
)
end
def get_users_from_set(ap_ids, local_only \\ true) do
get_users_from_set_query(ap_ids, local_only)
|> Repo.all()
end
def get_recipients_from_activity(%Activity{recipients: to}) do
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query =
from(
u in User,
where: u.ap_id in ^to,
or_where: fragment("? && ?", u.following, ^to)
)
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query = from(u in query, where: u.local == true)
Repo.all(query)
end
def search(query, resolve \\ false) do
# strip the beginning @ off if there is a query
query = String.trim_leading(query, "@")
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if resolve do
User.get_or_fetch_by_nickname(query)
end
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inner =
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from(
u in User,
select_merge: %{
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search_distance:
fragment(
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"? <-> (? || coalesce(?, ''))",
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^query,
u.nickname,
u.name
)
},
where: not is_nil(u.nickname)
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)
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q =
from(
s in subquery(inner),
order_by: s.search_distance,
limit: 20
)
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Repo.all(q)
end
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def blocks_import(%User{} = blocker, blocked_identifiers) when is_list(blocked_identifiers) do
Enum.map(
blocked_identifiers,
fn blocked_identifier ->
with %User{} = blocked <- get_or_fetch(blocked_identifier),
{:ok, blocker} <- block(blocker, blocked),
{:ok, _} <- ActivityPub.block(blocker, blocked) do
blocked
else
err ->
Logger.debug("blocks_import failed for #{blocked_identifier} with: #{inspect(err)}")
err
end
end
)
end
def block(blocker, %User{ap_id: ap_id} = blocked) do
# sever any follow relationships to prevent leaks per activitypub (Pleroma issue #213)
blocker =
if following?(blocker, blocked) do
{:ok, blocker, _} = unfollow(blocker, blocked)
blocker
else
blocker
end
if following?(blocked, blocker) do
unfollow(blocked, blocker)
end
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info_cng =
blocker.info
|> User.Info.add_to_block(ap_id)
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cng =
change(blocker)
|> put_embed(:info, info_cng)
update_and_set_cache(cng)
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end
# helper to handle the block given only an actor's AP id
def block(blocker, %{ap_id: ap_id}) do
block(blocker, User.get_by_ap_id(ap_id))
end
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def unblock(blocker, %{ap_id: ap_id}) do
info_cng =
blocker.info
|> User.Info.remove_from_block(ap_id)
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cng =
change(blocker)
|> put_embed(:info, info_cng)
update_and_set_cache(cng)
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end
def blocks?(user, %{ap_id: ap_id}) do
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blocks = user.info.blocks
domain_blocks = user.info.domain_blocks
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%{host: host} = URI.parse(ap_id)
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Enum.member?(blocks, ap_id) ||
Enum.any?(domain_blocks, fn domain ->
host == domain
end)
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end
def blocked_users(user),
do: Repo.all(from(u in User, where: u.ap_id in ^user.info.blocks))
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def block_domain(user, domain) do
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info_cng =
user.info
|> User.Info.add_to_domain_block(domain)
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cng =
change(user)
|> put_embed(:info, info_cng)
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update_and_set_cache(cng)
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end
def unblock_domain(user, domain) do
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info_cng =
user.info
|> User.Info.remove_from_domain_block(domain)
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cng =
change(user)
|> put_embed(:info, info_cng)
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update_and_set_cache(cng)
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end
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def local_user_query() do
from(
u in User,
where: u.local == true,
where: not is_nil(u.nickname)
)
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end
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def moderator_user_query() do
from(
u in User,
where: u.local == true,
where: fragment("?->'is_moderator' @> 'true'", u.info)
)
end
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def deactivate(%User{} = user, status \\ true) do
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info_cng = User.Info.set_activation_status(user.info, status)
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cng =
change(user)
|> put_embed(:info, info_cng)
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update_and_set_cache(cng)
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end
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def delete(%User{} = user) do
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{:ok, user} = User.deactivate(user)
# Remove all relationships
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{:ok, followers} = User.get_followers(user)
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followers
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|> Enum.each(fn follower -> User.unfollow(follower, user) end)
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{:ok, friends} = User.get_friends(user)
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friends
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|> Enum.each(fn followed -> User.unfollow(user, followed) end)
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query = from(a in Activity, where: a.actor == ^user.ap_id)
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Repo.all(query)
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|> Enum.each(fn activity ->
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case activity.data["type"] do
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"Create" ->
ActivityPub.delete(Object.normalize(activity.data["object"]))
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# TODO: Do something with likes, follows, repeats.
_ ->
"Doing nothing"
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end
end)
{:ok, user}
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end
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def html_filter_policy(%User{info: %{no_rich_text: true}}) do
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Pleroma.HTML.Scrubber.TwitterText
end
@default_scrubbers Pleroma.Config.get([:markup, :scrub_policy])
def html_filter_policy(_), do: @default_scrubbers
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def get_or_fetch_by_ap_id(ap_id) do
user = get_by_ap_id(ap_id)
if !is_nil(user) and !User.needs_update?(user) do
user
else
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ap_try = ActivityPub.make_user_from_ap_id(ap_id)
case ap_try do
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{:ok, user} ->
user
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_ ->
case OStatus.make_user(ap_id) do
{:ok, user} -> user
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_ -> {:error, "Could not fetch by AP id"}
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end
end
end
end
def get_or_create_instance_user do
relay_uri = "#{Pleroma.Web.Endpoint.url()}/relay"
if user = get_by_ap_id(relay_uri) do
user
else
changes =
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%User{info: %User.Info{}}
|> cast(%{}, [:ap_id, :nickname, :local])
|> put_change(:ap_id, relay_uri)
|> put_change(:nickname, nil)
|> put_change(:local, true)
|> put_change(:follower_address, relay_uri <> "/followers")
{:ok, user} = Repo.insert(changes)
user
end
end
# AP style
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def public_key_from_info(%{
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source_data: %{"publicKey" => %{"publicKeyPem" => public_key_pem}}
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}) do
key =
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public_key_pem
|> :public_key.pem_decode()
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|> hd()
|> :public_key.pem_entry_decode()
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{:ok, key}
end
# OStatus Magic Key
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def public_key_from_info(%{magic_key: magic_key}) do
{:ok, Pleroma.Web.Salmon.decode_key(magic_key)}
end
def get_public_key_for_ap_id(ap_id) do
with %User{} = user <- get_or_fetch_by_ap_id(ap_id),
{:ok, public_key} <- public_key_from_info(user.info) do
{:ok, public_key}
else
_ -> :error
end
end
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defp blank?(""), do: nil
defp blank?(n), do: n
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def insert_or_update_user(data) do
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data =
data
|> Map.put(:name, blank?(data[:name]) || data[:nickname])
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cs = User.remote_user_creation(data)
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Repo.insert(cs, on_conflict: :replace_all, conflict_target: :nickname)
end
def ap_enabled?(%User{local: true}), do: true
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def ap_enabled?(%User{info: info}), do: info.ap_enabled
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def ap_enabled?(_), do: false
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@doc "Gets or fetch a user by uri or nickname."
@spec get_or_fetch(String.t()) :: User.t()
def get_or_fetch("http" <> _host = uri), do: get_or_fetch_by_ap_id(uri)
def get_or_fetch(nickname), do: get_or_fetch_by_nickname(nickname)
# wait a period of time and return newest version of the User structs
# this is because we have synchronous follow APIs and need to simulate them
# with an async handshake
def wait_and_refresh(_, %User{local: true} = a, %User{local: true} = b) do
with %User{} = a <- Repo.get(User, a.id),
%User{} = b <- Repo.get(User, b.id) do
{:ok, a, b}
else
_e ->
:error
end
end
def wait_and_refresh(timeout, %User{} = a, %User{} = b) do
with :ok <- :timer.sleep(timeout),
%User{} = a <- Repo.get(User, a.id),
%User{} = b <- Repo.get(User, b.id) do
{:ok, a, b}
else
_e ->
:error
end
end
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def parse_bio(bio, user \\ %User{info: %{source_data: %{}}})
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def parse_bio(nil, _user), do: ""
def parse_bio(bio, _user) when bio == "", do: bio
def parse_bio(bio, user) do
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mentions = Formatter.parse_mentions(bio)
tags = Formatter.parse_tags(bio)
emoji =
(user.info.source_data["tag"] || [])
|> Enum.filter(fn %{"type" => t} -> t == "Emoji" end)
|> Enum.map(fn %{"icon" => %{"url" => url}, "name" => name} ->
{String.trim(name, ":"), url}
end)
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bio
|> CommonUtils.format_input(mentions, tags, "text/plain")
|> Formatter.emojify(emoji)
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end
def tag(user_identifiers, tags) when is_list(user_identifiers) do
Repo.transaction(fn ->
for user_identifier <- user_identifiers, do: tag(user_identifier, tags)
end)
end
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def tag(nickname, tags) when is_binary(nickname),
do: tag(User.get_by_nickname(nickname), tags)
def tag(%User{} = user, tags),
do: update_tags(user, Enum.uniq((user.tags || []) ++ normalize_tags(tags)))
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def untag(user_identifiers, tags) when is_list(user_identifiers) do
Repo.transaction(fn ->
for user_identifier <- user_identifiers, do: untag(user_identifier, tags)
end)
end
def untag(nickname, tags) when is_binary(nickname),
do: untag(User.get_by_nickname(nickname), tags)
def untag(%User{} = user, tags),
do: update_tags(user, (user.tags || []) -- normalize_tags(tags))
defp update_tags(%User{} = user, new_tags) do
{:ok, updated_user} =
user
|> change(%{tags: new_tags})
|> Repo.update()
updated_user
end
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defp normalize_tags(tags) do
[tags]
|> List.flatten()
|> Enum.map(&String.downcase(&1))
end
defp local_nickname_regex() do
if Pleroma.Config.get([:instance, :extended_nickname_format]) do
@extended_local_nickname_regex
else
@strict_local_nickname_regex
end
end
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end