akkoma/lib/pleroma/web/plugs/authentication_plug.ex

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# Pleroma: A lightweight social networking server
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# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Plugs.AuthenticationPlug do
alias Pleroma.Plugs.OAuthScopesPlug
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alias Pleroma.User
import Plug.Conn
require Logger
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def init(options), do: options
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def checkpw(password, "$6" <> _ = password_hash) do
:crypt.crypt(password, password_hash) == password_hash
end
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def checkpw(password, "$2" <> _ = password_hash) do
# Handle bcrypt passwords for Mastodon migration
Bcrypt.verify_pass(password, password_hash)
end
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def checkpw(password, "$pbkdf2" <> _ = password_hash) do
Pbkdf2.verify_pass(password, password_hash)
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end
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def checkpw(_password, _password_hash) do
Logger.error("Password hash not recognized")
false
end
def maybe_update_password(%User{password_hash: "$2" <> _} = user, password) do
do_update_password(user, password)
end
def maybe_update_password(%User{password_hash: "$6" <> _} = user, password) do
do_update_password(user, password)
end
def maybe_update_password(user, _), do: {:ok, user}
defp do_update_password(user, password) do
user
|> User.password_update_changeset(%{
"password" => password,
"password_confirmation" => password
})
|> Pleroma.Repo.update()
end
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def call(%{assigns: %{user: %User{}}} = conn, _), do: conn
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def call(
%{
assigns: %{
auth_user: %{password_hash: password_hash} = auth_user,
auth_credentials: %{password: password}
}
} = conn,
_
) do
if checkpw(password, password_hash) do
{:ok, auth_user} = maybe_update_password(auth_user, password)
conn
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|> assign(:user, auth_user)
|> OAuthScopesPlug.skip_plug()
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else
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conn
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end
end
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def call(%{assigns: %{auth_credentials: %{password: _}}} = conn, _) do
Pbkdf2.no_user_verify()
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conn
end
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def call(conn, _), do: conn
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end