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purge ldap authenticator (#92)

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Reviewed-on: https://akkoma.dev/AkkomaGang/akkoma/pulls/92
This commit is contained in:
floatingghost 2022-07-20 12:49:13 +00:00
parent dc9f66749c
commit 729f45ccd2
9 changed files with 3 additions and 431 deletions
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1
CHANGELOG.md
View file

@ -15,6 +15,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
- `/api/v1/notifications/dismiss`
- `/api/v1/search`
- `/api/v1/statuses/{id}/card`
- LDAP authenticator
## 2022.07

12
config/config.exs
View file

@ -511,6 +511,7 @@ config :pleroma, Pleroma.User,
"~",
"about",
"activities",
"akkoma",
"api",
"auth",
"check_password",
@ -591,17 +592,6 @@ config :pleroma, Pleroma.Formatter,
extra: true,
validate_tld: :no_scheme
config :pleroma, :ldap,
enabled: System.get_env("LDAP_ENABLED") == "true",
host: System.get_env("LDAP_HOST") || "localhost",
port: String.to_integer(System.get_env("LDAP_PORT") || "389"),
ssl: System.get_env("LDAP_SSL") == "true",
sslopts: [],
tls: System.get_env("LDAP_TLS") == "true",
tlsopts: [],
base: System.get_env("LDAP_BASE") || "dc=example,dc=com",
uid: System.get_env("LDAP_UID") || "cn"
oauth_consumer_strategies =
"OAUTH_CONSUMER_STRATEGIES"
|> System.get_env()

98
config/description.exs
View file

@ -2158,104 +2158,6 @@ config :pleroma, :config_description, [
}
]
},
%{
group: :pleroma,
key: :ldap,
label: "LDAP",
type: :group,
description:
"Use LDAP for user authentication. When a user logs in to the Pleroma instance, the name and password" <>
" will be verified by trying to authenticate (bind) to a LDAP server." <>
" If a user exists in the LDAP directory but there is no account with the same name yet on the" <>
" Pleroma instance then a new Pleroma account will be created with the same name as the LDAP user name.",
children: [
%{
key: :enabled,
type: :boolean,
description: "Enables LDAP authentication"
},
%{
key: :host,
type: :string,
description: "LDAP server hostname",
suggestions: ["localhosts"]
},
%{
key: :port,
type: :integer,
description: "LDAP port, e.g. 389 or 636",
suggestions: [389, 636]
},
%{
key: :ssl,
label: "SSL",
type: :boolean,
description: "Enable to use SSL, usually implies the port 636"
},
%{
key: :sslopts,
label: "SSL options",
type: :keyword,
description: "Additional SSL options",
suggestions: [cacertfile: "path/to/file/with/PEM/cacerts", verify: :verify_peer],
children: [
%{
key: :cacertfile,
type: :string,
description: "Path to file with PEM encoded cacerts",
suggestions: ["path/to/file/with/PEM/cacerts"]
},
%{
key: :verify,
type: :atom,
description: "Type of cert verification",
suggestions: [:verify_peer]
}
]
},
%{
key: :tls,
label: "TLS",
type: :boolean,
description: "Enable to use STARTTLS, usually implies the port 389"
},
%{
key: :tlsopts,
label: "TLS options",
type: :keyword,
description: "Additional TLS options",
suggestions: [cacertfile: "path/to/file/with/PEM/cacerts", verify: :verify_peer],
children: [
%{
key: :cacertfile,
type: :string,
description: "Path to file with PEM encoded cacerts",
suggestions: ["path/to/file/with/PEM/cacerts"]
},
%{
key: :verify,
type: :atom,
description: "Type of cert verification",
suggestions: [:verify_peer]
}
]
},
%{
key: :base,
type: :string,
description: "LDAP base, e.g. \"dc=example,dc=com\"",
suggestions: ["dc=example,dc=com"]
},
%{
key: :uid,
label: "UID",
type: :string,
description:
"LDAP attribute name to authenticate the user, e.g. when \"cn\", the filter will be \"cn=username,base\"",
suggestions: ["cn"]
}
]
},
%{
group: :pleroma,
key: :auth,

22
docs/docs/configuration/cheatsheet.md
View file

@ -900,28 +900,6 @@ Authentication / authorization settings.
### Pleroma.Web.Auth.Authenticator
* `Pleroma.Web.Auth.PleromaAuthenticator`: default database authenticator.
* `Pleroma.Web.Auth.LDAPAuthenticator`: LDAP authentication.
### :ldap
Use LDAP for user authentication. When a user logs in to the Akkoma
instance, the name and password will be verified by trying to authenticate
(bind) to an LDAP server. If a user exists in the LDAP directory but there
is no account with the same name yet on the Akkoma instance then a new
Akkoma account will be created with the same name as the LDAP user name.
* `enabled`: enables LDAP authentication
* `host`: LDAP server hostname
* `port`: LDAP port, e.g. 389 or 636
* `ssl`: true to use SSL, usually implies the port 636
* `sslopts`: additional SSL options
* `tls`: true to start TLS, usually implies the port 389
* `tlsopts`: additional TLS options
* `base`: LDAP base, e.g. "dc=example,dc=com"
* `uid`: LDAP attribute name to authenticate the user, e.g. when "cn", the filter will be "cn=username,base"
Note, if your LDAP server is an Active Directory server the correct value is commonly `uid: "cn"`, but if you use an
OpenLDAP server the value may be `uid: "uid"`.
### :oauth2 (Akkoma as OAuth 2.0 provider settings)

6
docs/docs/installation/alpine_linux_en.md
View file

@ -41,12 +41,6 @@ doas apk add git build-base cmake file-dev
doas apk add erlang elixir
```
* Install `erlang-eldap` if you want to enable ldap authenticator
```shell
doas apk add erlang-eldap
```
### Install PostgreSQL
* Install Postgresql server:

28
lib/pleroma/user.ex
View file

@ -663,34 +663,6 @@ defmodule Pleroma.User do
@spec force_password_reset(User.t()) :: {:ok, User.t()} | {:error, Ecto.Changeset.t()}
def force_password_reset(user), do: update_password_reset_pending(user, true)
# Used to auto-register LDAP accounts which won't have a password hash stored locally
def register_changeset_ldap(struct, params = %{password: password})
when is_nil(password) do
params = Map.put_new(params, :accepts_chat_messages, true)
params =
if Map.has_key?(params, :email) do
Map.put_new(params, :email, params[:email])
else
params
end
struct
|> cast(params, [
:name,
:nickname,
:email,
:accepts_chat_messages
])
|> validate_required([:name, :nickname])
|> unique_constraint(:nickname)
|> validate_exclusion(:nickname, Config.get([User, :restricted_nicknames]))
|> validate_format(:nickname, local_nickname_regex())
|> put_ap_id()
|> unique_constraint(:ap_id)
|> put_following_and_follower_and_featured_address()
end
def register_changeset(struct, params \\ %{}, opts \\ []) do
bio_limit = Config.get([:instance, :user_bio_length], 5000)
name_limit = Config.get([:instance, :user_name_length], 100)

129
lib/pleroma/web/auth/ldap_authenticator.ex
View file

@ -1,129 +0,0 @@
# Pleroma: A lightweight social networking server
# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.Auth.LDAPAuthenticator do
alias Pleroma.User
require Logger
import Pleroma.Web.Auth.Helpers, only: [fetch_credentials: 1, fetch_user: 1]
@behaviour Pleroma.Web.Auth.Authenticator
@base Pleroma.Web.Auth.PleromaAuthenticator
@connection_timeout 10_000
@search_timeout 10_000
defdelegate get_registration(conn), to: @base
defdelegate create_from_registration(conn, registration), to: @base
defdelegate handle_error(conn, error), to: @base
defdelegate auth_template, to: @base
defdelegate oauth_consumer_template, to: @base
def get_user(%Plug.Conn{} = conn) do
with {:ldap, true} <- {:ldap, Pleroma.Config.get([:ldap, :enabled])},
{:ok, {name, password}} <- fetch_credentials(conn),
%User{} = user <- ldap_user(name, password) do
{:ok, user}
else
{:ldap, _} ->
@base.get_user(conn)
error ->
error
end
end
defp ldap_user(name, password) do
ldap = Pleroma.Config.get(:ldap, [])
host = Keyword.get(ldap, :host, "localhost")
port = Keyword.get(ldap, :port, 389)
ssl = Keyword.get(ldap, :ssl, false)
sslopts = Keyword.get(ldap, :sslopts, [])
options =
[{:port, port}, {:ssl, ssl}, {:timeout, @connection_timeout}] ++
if sslopts != [], do: [{:sslopts, sslopts}], else: []
case :eldap.open([to_charlist(host)], options) do
{:ok, connection} ->
try do
if Keyword.get(ldap, :tls, false) do
:application.ensure_all_started(:ssl)
case :eldap.start_tls(
connection,
Keyword.get(ldap, :tlsopts, []),
@connection_timeout
) do
:ok ->
:ok
error ->
Logger.error("Could not start TLS: #{inspect(error)}")
end
end
bind_user(connection, ldap, name, password)
after
:eldap.close(connection)
end
{:error, error} ->
Logger.error("Could not open LDAP connection: #{inspect(error)}")
{:error, {:ldap_connection_error, error}}
end
end
defp bind_user(connection, ldap, name, password) do
uid = Keyword.get(ldap, :uid, "cn")
base = Keyword.get(ldap, :base)
case :eldap.simple_bind(connection, "#{uid}=#{name},#{base}", password) do
:ok ->
case fetch_user(name) do
%User{} = user ->
user
_ ->
register_user(connection, base, uid, name)
end
error ->
error
end
end
defp register_user(connection, base, uid, name) do
case :eldap.search(connection, [
{:base, to_charlist(base)},
{:filter, :eldap.equalityMatch(to_charlist(uid), to_charlist(name))},
{:scope, :eldap.wholeSubtree()},
{:timeout, @search_timeout}
]) do
{:ok, {:eldap_search_result, [{:eldap_entry, _, attributes}], _}} ->
params = %{
name: name,
nickname: name,
password: nil
}
params =
case List.keyfind(attributes, 'mail', 0) do
{_, [mail]} -> Map.put_new(params, :email, :erlang.list_to_binary(mail))
_ -> params
end
changeset = User.register_changeset_ldap(%User{}, params)
case User.register(changeset) do
{:ok, user} -> user
error -> error
end
error ->
error
end
end
end

3
mix.exs
View file

@ -9,7 +9,6 @@ defmodule Pleroma.Mixfile do
elixirc_paths: elixirc_paths(Mix.env()),
compilers: [:phoenix, :gettext] ++ Mix.compilers(),
elixirc_options: [warnings_as_errors: warnings_as_errors()],
xref: [exclude: [:eldap]],
start_permanent: Mix.env() == :prod,
aliases: aliases(),
deps: deps(),
@ -35,7 +34,7 @@ defmodule Pleroma.Mixfile do
releases: [
pleroma: [
include_executables_for: [:unix],
applications: [ex_syslogger: :load, syslog: :load, eldap: :transient],
applications: [ex_syslogger: :load, syslog: :load],
steps: [:assemble, &put_otp_version/1, &copy_files/1, &copy_nginx_config/1],
config_providers: [{Pleroma.Config.ReleaseRuntimeProvider, []}]
]

135
test/pleroma/web/o_auth/ldap_authorization_test.exs
View file

@ -1,135 +0,0 @@
# Pleroma: A lightweight social networking server
# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.OAuth.LDAPAuthorizationTest do
use Pleroma.Web.ConnCase
alias Pleroma.Repo
alias Pleroma.Web.OAuth.Token
import Pleroma.Factory
import Mock
@skip if !Code.ensure_loaded?(:eldap), do: :skip
setup_all do: clear_config([:ldap, :enabled], true)
setup_all do: clear_config(Pleroma.Web.Auth.Authenticator, Pleroma.Web.Auth.LDAPAuthenticator)
@tag @skip
test "authorizes the existing user using LDAP credentials" do
password = "testpassword"
user = insert(:user, password_hash: Pleroma.Password.Pbkdf2.hash_pwd_salt(password))
app = insert(:oauth_app, scopes: ["read", "write"])
host = Pleroma.Config.get([:ldap, :host]) |> to_charlist
port = Pleroma.Config.get([:ldap, :port])
with_mocks [
{:eldap, [],
[
open: fn [^host], [{:port, ^port}, {:ssl, false} | _] -> {:ok, self()} end,
simple_bind: fn _connection, _dn, ^password -> :ok end,
close: fn _connection ->
send(self(), :close_connection)
:ok
end
]}
] do
conn =
build_conn()
|> post("/oauth/token", %{
"grant_type" => "password",
"username" => user.nickname,
"password" => password,
"client_id" => app.client_id,
"client_secret" => app.client_secret
})
assert %{"access_token" => token} = json_response(conn, 200)
token = Repo.get_by(Token, token: token)
assert token.user_id == user.id
assert_received :close_connection
end
end
@tag @skip
test "creates a new user after successful LDAP authorization" do
password = "testpassword"
user = build(:user)
app = insert(:oauth_app, scopes: ["read", "write"])
host = Pleroma.Config.get([:ldap, :host]) |> to_charlist
port = Pleroma.Config.get([:ldap, :port])
with_mocks [
{:eldap, [],
[
open: fn [^host], [{:port, ^port}, {:ssl, false} | _] -> {:ok, self()} end,
simple_bind: fn _connection, _dn, ^password -> :ok end,
equalityMatch: fn _type, _value -> :ok end,
wholeSubtree: fn -> :ok end,
search: fn _connection, _options ->
{:ok, {:eldap_search_result, [{:eldap_entry, '', []}], []}}
end,
close: fn _connection ->
send(self(), :close_connection)
:ok
end
]}
] do
conn =
build_conn()
|> post("/oauth/token", %{
"grant_type" => "password",
"username" => user.nickname,
"password" => password,
"client_id" => app.client_id,
"client_secret" => app.client_secret
})
assert %{"access_token" => token} = json_response(conn, 200)
token = Repo.get_by(Token, token: token) |> Repo.preload(:user)
assert token.user.nickname == user.nickname
assert_received :close_connection
end
end
@tag @skip
test "disallow authorization for wrong LDAP credentials" do
password = "testpassword"
user = insert(:user, password_hash: Pleroma.Password.Pbkdf2.hash_pwd_salt(password))
app = insert(:oauth_app, scopes: ["read", "write"])
host = Pleroma.Config.get([:ldap, :host]) |> to_charlist
port = Pleroma.Config.get([:ldap, :port])
with_mocks [
{:eldap, [],
[
open: fn [^host], [{:port, ^port}, {:ssl, false} | _] -> {:ok, self()} end,
simple_bind: fn _connection, _dn, ^password -> {:error, :invalidCredentials} end,
close: fn _connection ->
send(self(), :close_connection)
:ok
end
]}
] do
conn =
build_conn()
|> post("/oauth/token", %{
"grant_type" => "password",
"username" => user.nickname,
"password" => password,
"client_id" => app.client_id,
"client_secret" => app.client_secret
})
assert %{"error" => "Invalid credentials"} = json_response(conn, 400)
assert_received :close_connection
end
end
end