mobilizon/lib/graphql/resolvers/user.ex

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defmodule Mobilizon.GraphQL.Resolvers.User do
@moduledoc """
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Handles the user-related GraphQL calls.
"""
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import Mobilizon.Users.Guards
alias Mobilizon.{Actors, Admin, Config, Events, FollowedGroupActivity, Users}
alias Mobilizon.Actors.Actor
alias Mobilizon.Federation.ActivityPub.{Actions, Relay}
alias Mobilizon.Service.Akismet
alias Mobilizon.Service.Auth.Authenticator
alias Mobilizon.Storage.{Page, Repo}
alias Mobilizon.Users.{Setting, User}
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alias Mobilizon.Web.{Auth, Email}
import Mobilizon.Web.Gettext
require Logger
@doc """
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Find an user by its ID
"""
@spec find_user(any(), map(), Absinthe.Resolution.t()) :: {:ok, User.t()} | {:error, String.t()}
def find_user(_parent, %{id: id}, %{context: %{current_user: %User{role: role}}})
when is_moderator(role) do
case Users.get_user_with_actors(id) do
{:ok, %User{} = user} ->
{:ok, user}
_ ->
{:error, :user_not_found}
end
end
def find_user(_parent, _args, _resolution) do
{:error, :unauthorized}
end
@doc """
Return current logged-in user
"""
@spec get_current_user(any, map(), Absinthe.Resolution.t()) ::
{:error, :unauthenticated} | {:ok, Mobilizon.Users.User.t()}
def get_current_user(_parent, _args, %{context: %{current_user: %User{} = user}}) do
{:ok, user}
end
def get_current_user(_parent, _args, _resolution) do
{:error, :unauthenticated}
end
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@doc """
List instance users
"""
@spec list_users(any(), map(), Absinthe.Resolution.t()) ::
{:ok, Page.t(User.t())} | {:error, :unauthorized}
def list_users(
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_parent,
args,
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%{context: %{current_user: %User{role: role}}}
)
when is_moderator(role) do
{:ok, Users.list_users(Keyword.new(args))}
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end
def list_users(_parent, _args, _resolution) do
{:error, :unauthorized}
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end
@doc """
Login an user. Returns a token and the user
"""
@spec login_user(any(), map(), Absinthe.Resolution.t()) ::
{:ok, map()} | {:error, :user_not_found | String.t()}
def login_user(_parent, %{email: email, password: password}, %{context: context}) do
with {:ok,
%{
access_token: _access_token,
refresh_token: _refresh_token,
user: %User{} = user
} = user_and_tokens} <- Authenticator.authenticate(email, password),
{:ok, %User{} = user} <- update_user_login_information(user, context) do
{:ok, %{user_and_tokens | user: user}}
else
{:error, :user_not_found} ->
{:error, :user_not_found}
{:error, :disabled_user} ->
{:error, dgettext("errors", "This user has been disabled")}
{:error, _error} ->
{:error,
dgettext(
"errors",
"Impossible to authenticate, either your email or password are invalid."
)}
end
end
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@doc """
Refresh a token
"""
@spec refresh_token(any(), map(), Absinthe.Resolution.t()) ::
{:ok, map()} | {:error, String.t()}
def refresh_token(_parent, %{refresh_token: refresh_token}, _resolution) do
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with {:ok, user, _claims} <- Auth.Guardian.resource_from_token(refresh_token),
{:ok, _old, {exchanged_token, _claims}} <-
Auth.Guardian.exchange(refresh_token, "refresh", "access"),
{:ok, new_refresh_token} <- Authenticator.generate_refresh_token(user),
{:ok, _claims} <- Auth.Guardian.revoke(refresh_token) do
{:ok, %{access_token: exchanged_token, refresh_token: new_refresh_token}}
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else
{:error, message} ->
Logger.debug("Cannot refresh user token: #{inspect(message)}")
{:error, dgettext("errors", "Cannot refresh the token")}
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end
end
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def refresh_token(_parent, _params, _context) do
{:error, dgettext("errors", "You need to have an existing token to get a refresh token")}
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end
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@spec logout(any(), map(), Absinthe.Resolution.t()) ::
{:ok, String.t()}
| {:error, :token_not_found | :unable_to_logout | :unauthenticated | :invalid_argument}
def logout(_parent, %{refresh_token: refresh_token}, %{context: %{current_user: %User{}}}) do
with {:ok, _claims} <- Auth.Guardian.decode_and_verify(refresh_token, %{"typ" => "refresh"}),
{:ok, _claims} <- Auth.Guardian.revoke(refresh_token) do
{:ok, refresh_token}
else
{:error, :token_not_found} ->
{:error, :token_not_found}
{:error, error} ->
Logger.debug("Cannot remove user refresh token: #{inspect(error)}")
{:error, :unable_to_logout}
end
end
def logout(_parent, %{refresh_token: _refresh_token}, _context) do
{:error, :unauthenticated}
end
def logout(_parent, _params, _context) do
{:error, :invalid_argument}
end
@doc """
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Register an user:
- check registrations are enabled
- create the user
- send a validation email to the user
"""
@spec create_user(any, %{email: String.t()}, any) :: {:ok, User.t()} | {:error, String.t()}
def create_user(_parent, %{email: email} = args, %{context: context}) do
current_ip = Map.get(context, :ip)
user_agent = Map.get(context, :user_agent, "")
now = DateTime.utc_now()
with {:ok, email} <- lowercase_domain(email),
:registration_ok <- check_registration_config(email),
:not_deny_listed <- check_registration_denylist(email),
{:akismet, :ham} <-
{:akismet, Akismet.check_user(email, current_ip, user_agent)},
{:ok, %User{} = user} <-
args
|> Map.merge(%{email: email, current_sign_in_ip: current_ip, current_sign_in_at: now})
|> Users.register() do
Email.User.send_confirmation_email(user, Map.get(args, :locale, "en"))
{:ok, user}
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else
{:error, :invalid_email} ->
{:error, dgettext("errors", "Your email seems to be using an invalid format")}
:registration_closed ->
{:error, dgettext("errors", "Registrations are not open")}
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:not_allowlisted ->
{:error, dgettext("errors", "Your email is not on the allowlist")}
:deny_listed ->
{:error,
dgettext(
"errors",
"Your e-mail has been denied registration or uses a disallowed e-mail provider"
)}
{:akismet, _} ->
{:error,
dgettext(
"errors",
"Your registration has been detected as spam and cannot be processed."
)}
{:error, error} ->
{:error, error}
end
end
@spec check_registration_config(String.t()) ::
:registration_ok | :registration_closed | :not_allowlisted
defp check_registration_config(email) do
cond do
Config.instance_registrations_open?() ->
:registration_ok
Config.instance_registrations_allowlist?() ->
check_allow_listed_email(email)
true ->
:registration_closed
end
end
@spec check_registration_denylist(String.t()) :: :deny_listed | :not_deny_listed
defp check_registration_denylist(email) do
# Remove everything behind the +
email = String.replace(email, ~r/(\+.*)(?=\@)/, "")
if email_in_list?(email, Config.instance_registrations_denylist()),
do: :deny_listed,
else: :not_deny_listed
end
@spec check_allow_listed_email(String.t()) :: :registration_ok | :not_allowlisted
defp check_allow_listed_email(email) do
if email_in_list?(email, Config.instance_registrations_allowlist()),
do: :registration_ok,
else: :not_allowlisted
end
@spec email_in_list?(String.t(), list(String.t())) :: boolean()
defp email_in_list?(email, list) do
[_, domain] = split_email(email)
domain in list or email in list
end
# Domains should always be lower-case, so let's force that
@spec lowercase_domain(String.t()) :: {:ok, String.t()} | {:error, :invalid_email}
defp lowercase_domain(email) when is_binary(email) do
case split_email(email) do
[user_part, domain_part] ->
{:ok, "#{user_part}@#{String.downcase(domain_part)}"}
_ ->
{:error, :invalid_email}
end
end
defp lowercase_domain(_), do: {:error, :invalid_email}
@spec split_email(String.t()) :: list(String.t())
defp split_email(email), do: String.split(email, "@", parts: 2, trim: true)
@doc """
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Validate an user, get its actor and a token
"""
@spec validate_user(map(), %{token: String.t()}, map()) :: {:ok, map()} | {:error, String.t()}
def validate_user(_parent, %{token: token}, _resolution) do
case Email.User.check_confirmation_token(token) do
{:ok, %User{} = user} ->
actor = Users.get_actor_for_user(user)
{:ok, %{access_token: access_token, refresh_token: refresh_token}} =
Authenticator.generate_tokens(user)
{:ok,
%{
access_token: access_token,
refresh_token: refresh_token,
user: Map.put(user, :default_actor, actor)
}}
{:error, :invalid_token} ->
Logger.info("Invalid token #{token} to validate user")
{:error, dgettext("errors", "Unable to validate user")}
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{:error, %Ecto.Changeset{} = err} ->
Logger.info("Unable to validate user with token #{token}")
Logger.debug(inspect(err))
{:error, dgettext("errors", "Unable to validate user")}
end
end
@doc """
Send the confirmation email again.
We only do this to accounts not activated
"""
def resend_confirmation_email(_parent, args, _resolution) do
with {:ok, email} <- lowercase_domain(Map.get(args, :email)),
{:ok, %User{locale: locale} = user} <-
Users.get_user_by_email(email, activated: false, unconfirmed: false),
{:ok, email} <-
Email.User.resend_confirmation_email(user, Map.get(args, :locale, locale)) do
{:ok, email}
else
{:error, :user_not_found} ->
{:error, dgettext("errors", "No user to validate with this email was found")}
{:error, :invalid_email} ->
{:error, dgettext("errors", "This email doesn't seem to be valid")}
{:error, :email_too_soon} ->
{:error, dgettext("errors", "You requested again a confirmation email too soon")}
end
end
@doc """
Send an email to reset the password from an user
"""
def send_reset_password(_parent, args, _resolution) do
with {:ok, email} <- lowercase_domain(Map.get(args, :email)),
{:ok, %User{locale: locale} = user} <-
Users.get_user_by_email(email, activated: true, unconfirmed: false),
{:can_reset_password, true} <-
{:can_reset_password, Authenticator.can_reset_password?(user)} do
Email.User.send_password_reset_email(user, Map.get(args, :locale, locale))
{:ok, email}
else
{:can_reset_password, false} ->
{:error, dgettext("errors", "This user can't reset their password")}
{:error, :invalid_email} ->
{:error, dgettext("errors", "This email doesn't seem to be valid")}
{:error, :user_not_found} ->
# TODO : implement rate limits for this endpoint
{:error, dgettext("errors", "No user with this email was found")}
{:error, :email_too_soon} ->
{:error, dgettext("errors", "You requested again a confirmation email too soon")}
end
end
@doc """
Reset the password from an user
"""
@spec reset_password(map(), %{password: String.t(), token: String.t()}, map()) ::
{:ok, map()} | {:error, String.t()}
def reset_password(_parent, %{password: password, token: token}, _resolution) do
case Email.User.check_reset_password_token(password, token) do
{:ok, %User{email: email} = user} ->
{:ok, tokens} = Authenticator.authenticate(email, password)
{:ok, Map.put(tokens, :user, user)}
{:error, %Ecto.Changeset{errors: [password: {"registration.error.password_too_short", _}]}} ->
{:error,
gettext(
"The password you have choosen is too short. Please make sure your password contains at least 6 charaters."
)}
{:error, _err} ->
{:error,
gettext(
"The token you provided is invalid. Make sure that the URL is exactly the one provided inside the email you got."
)}
end
end
@doc "Change an user default actor"
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def change_default_actor(
_parent,
%{preferred_username: username},
%{context: %{current_user: %User{} = user}}
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) do
case Actors.get_local_actor_by_name(username) do
%Actor{id: actor_id} = actor ->
if actor_id in Enum.map(Users.get_actors_for_user(user), & &1.id) do
%User{} = user = Users.update_user_default_actor(user, actor)
{:ok, user}
else
{:error, dgettext("errors", "This profile does not belong to you")}
end
nil ->
{:error,
dgettext("errors", "Profile with username %{username} not found", %{username: username})}
end
end
def change_default_actor(_parent, _args, _resolution), do: {:error, :unauthenticated}
@doc """
Returns the list of events for all of this user's identities are going to
"""
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def user_participations(
%User{id: user_id},
args,
%{context: %{current_user: %User{id: logged_user_id, role: role}}}
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) do
with true <- user_id == logged_user_id or is_moderator(role),
%Page{} = page <-
Events.list_participations_for_user(
user_id,
Map.get(args, :after_datetime),
Map.get(args, :before_datetime),
Map.get(args, :page),
Map.get(args, :limit)
) do
{:ok, page}
end
end
@doc """
Returns the list of groups this user is a member is a member of
"""
def user_memberships(
%User{id: user_id},
%{page: page, limit: limit} = args,
%{context: %{current_user: %User{id: logged_user_id}}}
) do
with true <- user_id == logged_user_id,
memberships <-
Actors.list_memberships_for_user(
user_id,
Map.get(args, :name),
page,
limit
) do
{:ok, memberships}
end
end
@doc """
Returns the list of draft events for the current user
"""
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def user_drafted_events(
%User{id: user_id},
args,
%{context: %{current_user: %User{id: logged_user_id}}}
) do
with {:same_user, true} <- {:same_user, user_id == logged_user_id},
events <-
Events.list_drafts_for_user(user_id, Map.get(args, :page), Map.get(args, :limit)) do
{:ok, events}
end
end
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def change_password(
_parent,
%{old_password: old_password, new_password: new_password},
%{context: %{current_user: %User{} = user}}
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) do
with {:can_change_password, true} <-
{:can_change_password, Authenticator.can_change_password?(user)},
{:current_password, {:ok, %User{}}} <-
{:current_password, Authenticator.login(user.email, old_password)},
{:same_password, false} <- {:same_password, old_password == new_password},
{:ok, %User{} = user} <-
user
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|> User.password_change_changeset(%{"password" => new_password})
|> Repo.update() do
{:ok, user}
else
{:can_change_password, false} ->
{:error, dgettext("errors", "You cannot change your password.")}
{:current_password, _} ->
{:error, dgettext("errors", "The current password is invalid")}
{:same_password, true} ->
{:error, dgettext("errors", "The new password must be different")}
{:error, %Ecto.Changeset{errors: [password: {"registration.error.password_too_short", _}]}} ->
{:error,
dgettext(
"errors",
"The password you have chosen is too short. Please make sure your password contains at least 6 characters."
)}
end
end
def change_password(_parent, _args, _resolution) do
{:error, dgettext("errors", "You need to be logged-in to change your password")}
end
def change_email(_parent, %{email: new_email, password: password}, %{
context: %{current_user: %User{email: old_email} = user}
}) do
if Authenticator.can_change_email?(user) do
case Authenticator.login(old_email, password) do
{:ok, %User{}} ->
if new_email != old_email do
if Email.Checker.valid?(new_email) do
case Users.update_user_email(user, new_email) do
{:ok, %User{} = user} ->
user
|> Email.User.send_email_reset_old_email()
|> Email.Mailer.send_email()
user
|> Email.User.send_email_reset_new_email()
|> Email.Mailer.send_email()
{:ok, user}
{:error, %Ecto.Changeset{} = err} ->
Logger.debug(inspect(err))
{:error, dgettext("errors", "Failed to update user email")}
end
else
{:error, dgettext("errors", "The new email doesn't seem to be valid")}
end
else
{:error, dgettext("errors", "The new email must be different")}
end
{:error, _} ->
{:error, dgettext("errors", "The password provided is invalid")}
end
else
{:error, dgettext("errors", "User cannot change email")}
end
end
def change_email(_parent, _args, _resolution) do
{:error, dgettext("errors", "You need to be logged-in to change your email")}
end
@spec validate_email(map(), %{token: String.t()}, map()) ::
{:ok, User.t()} | {:error, String.t()}
def validate_email(_parent, %{token: token}, _resolution) do
case Users.get_user_by_activation_token(token) do
%User{} = user ->
case Users.validate_email(user) do
{:ok, %User{} = user} ->
{:ok, user}
{:error, %Ecto.Changeset{} = err} ->
Logger.debug(inspect(err))
{:error, dgettext("errors", "Failed to validate user email")}
end
nil ->
{:error, dgettext("errors", "Invalid activation token")}
end
end
def delete_account(_parent, %{user_id: user_id}, %{
context: %{
current_user: %User{role: role},
current_actor: %Actor{} = moderator_actor
}
})
when is_moderator(role) do
with %User{disabled: false} = user <- Users.get_user(user_id),
{:ok, %User{}} <-
do_delete_account(%User{} = user, actor_performing: Relay.get_actor()) do
Admin.log_action(moderator_actor, "delete", user)
else
%User{disabled: true} ->
{:error, dgettext("errors", "User already disabled")}
end
end
def delete_account(_parent, args, %{
context: %{current_user: %User{email: email} = user}
}) do
with {:user_has_password, true} <- {:user_has_password, Authenticator.has_password?(user)},
{:confirmation_password, password} when not is_nil(password) <-
{:confirmation_password, Map.get(args, :password)},
{:current_password, {:ok, _}} <-
{:current_password, Authenticator.authenticate(email, password)} do
do_delete_account(user, reserve_email: false)
else
# If the user hasn't got any password (3rd-party auth)
{:user_has_password, false} ->
do_delete_account(user, reserve_email: false)
{:confirmation_password, nil} ->
{:error, dgettext("errors", "The password provided is invalid")}
{:current_password, _} ->
{:error, dgettext("errors", "The password provided is invalid")}
end
end
def delete_account(_parent, _args, _resolution) do
{:error, dgettext("errors", "You need to be logged-in to delete your account")}
end
@spec do_delete_account(User.t(), Keyword.t()) :: {:ok, User.t()}
defp do_delete_account(%User{} = user, options) do
with actors <- Users.get_actors_for_user(user),
activated <- not is_nil(user.confirmed_at),
# Detach actors from user
:ok <- Enum.each(actors, fn actor -> Actors.update_actor(actor, %{user_id: nil}) end),
# Launch a background job to delete actors
:ok <-
Enum.each(actors, fn actor ->
actor_performing = Keyword.get(options, :actor_performing, actor)
Actions.Delete.delete(actor, actor_performing, true)
end) do
# Delete user
Users.delete_user(user, reserve_email: Keyword.get(options, :reserve_email, activated))
end
end
@spec user_settings(User.t(), map(), map()) :: {:ok, list(Setting.t())} | {:error, String.t()}
def user_settings(%User{} = user, _args, %{
context: %{current_user: %User{role: role}}
})
when is_moderator(role) do
with {:setting, settings} <- {:setting, Users.get_setting(user)} do
{:ok, settings}
end
end
def user_settings(%User{id: user_id} = user, _args, %{
context: %{current_user: %User{id: logged_user_id}}
}) do
with {:same_user, true} <- {:same_user, user_id == logged_user_id},
{:setting, settings} <- {:setting, Users.get_setting(user)} do
{:ok, settings}
else
{:same_user, _} ->
{:error, dgettext("errors", "User requested is not logged-in")}
end
end
@spec set_user_setting(map(), map(), map()) :: {:ok, Setting.t()} | {:error, any()}
def set_user_setting(_parent, attrs, %{
context: %{current_user: %User{id: logged_user_id}}
}) do
attrs = Map.put(attrs, :user_id, logged_user_id)
res =
case Users.get_setting(logged_user_id) do
nil ->
Users.create_setting(attrs)
%Setting{} = setting ->
Users.update_setting(setting, attrs)
end
case res do
{:ok, %Setting{} = setting} ->
{:ok, setting}
{:error, changeset} ->
Logger.debug(inspect(changeset))
{:error, dgettext("errors", "Error while saving user settings")}
end
end
def update_locale(_parent, %{locale: locale}, %{
context: %{current_user: %User{locale: current_locale} = user}
}) do
if current_locale != locale do
case Users.update_user(user, %{locale: locale}) do
{:ok, %User{} = updated_user} ->
{:ok, updated_user}
{:error, %Ecto.Changeset{} = err} ->
Logger.debug(err)
{:error, dgettext("errors", "Error while updating locale")}
end
else
{:ok, user}
end
end
def user_medias(%User{id: user_id}, %{page: page, limit: limit}, %{
context: %{current_user: %User{id: logged_in_user_id}}
})
when user_id == logged_in_user_id do
%{elements: elements, total: total} = Mobilizon.Medias.medias_for_user(user_id, page, limit)
{:ok,
%{
elements:
Enum.map(elements, fn element ->
%{
name: element.file.name,
url: element.file.url,
id: element.id,
content_type: element.file.content_type,
size: element.file.size
}
end),
total: total
}}
end
def user_followed_group_events(%User{id: user_id}, %{page: page, limit: limit} = args, %{
context: %{current_user: %User{id: logged_in_user_id}}
})
when user_id == logged_in_user_id do
activities =
FollowedGroupActivity.user_followed_group_events(
user_id,
Map.get(args, :after_datetime),
page,
limit
)
activities = %Page{
activities
| elements:
Enum.map(activities.elements, fn [event, group, profile] ->
%{group: group, profile: profile, event: event}
end)
}
{:ok, activities}
end
@spec update_user_login_information(User.t(), map()) ::
{:ok, User.t()} | {:error, Ecto.Changeset.t()}
defp update_user_login_information(
%User{current_sign_in_at: current_sign_in_at, current_sign_in_ip: current_sign_in_ip} =
user,
context
) do
current_ip = Map.get(context, :ip)
now = DateTime.utc_now()
Users.update_user(user, %{
last_sign_in_at: current_sign_in_at || now,
last_sign_in_ip: current_sign_in_ip || current_ip,
current_sign_in_ip: current_ip,
current_sign_in_at: now
})
end
end