Merge remote-tracking branch 'origin/develop' into retry-tests

changelog.d/ldap-ca.add

@@ -0,0 +1 @@
+LDAP configuration now permits overriding the CA root certificate file for TLS validation.

changelog.d/ldaps.fix

@@ -0,0 +1 @@
+LDAPS connections (implicit TLS) are now supported.

config/config.exs

@@ -619,7 +619,9 @@ config :pleroma, :ldap,
   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"
+  uid: System.get_env("LDAP_UID") || "cn",
+  # defaults to CAStore's Mozilla roots
+  cacertfile: nil
 
 oauth_consumer_strategies =
   System.get_env("OAUTH_CONSUMER_STRATEGIES")

docs/configuration/cheatsheet.md

@@ -968,12 +968,13 @@ Pleroma 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
+* `ssl`: true to use implicit SSL/TLS, usually port 636
 * `sslopts`: additional SSL options
-* `tls`: true to start TLS, usually implies the port 389
+* `tls`: true to use explicit TLS (STARTTLS), usually 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"
+* `cacertfile`: Path to alternate CA root certificates file
 
 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"`.

lib/pleroma/web/auth/ldap_authenticator.ex

@@ -40,31 +40,40 @@ defmodule Pleroma.Web.Auth.LDAPAuthenticator do
     host = Keyword.get(ldap, :host, "localhost")
     port = Keyword.get(ldap, :port, 389)
     ssl = Keyword.get(ldap, :ssl, false)
-    sslopts = Keyword.get(ldap, :sslopts, [])
-    tlsopts = Keyword.get(ldap, :tlsopts, [])
+    tls = Keyword.get(ldap, :tls, false)
+    cacertfile = Keyword.get(ldap, :cacertfile) || CAStore.file_path()
 
+    default_secure_opts = [
+      verify: :verify_peer,
+      cacerts: decode_certfile(cacertfile),
+      customize_hostname_check: [
+        fqdn_fun: fn _ -> to_charlist(host) end
+      ]
+    ]
+
+    sslopts = Keyword.merge(default_secure_opts, Keyword.get(ldap, :sslopts, []))
+    tlsopts = Keyword.merge(default_secure_opts, Keyword.get(ldap, :tlsopts, []))
+
+    # :sslopts can only be included in :eldap.open/2 when {ssl: true}
+    # or the connection will fail
     options =
-      [{:port, port}, {:ssl, ssl}, {:timeout, @connection_timeout}] ++
-        if sslopts != [], do: [{:sslopts, sslopts}], else: []
+      if ssl do
+        [{:port, port}, {:ssl, ssl}, {:sslopts, sslopts}, {:timeout, @connection_timeout}]
+      else
+        [{:port, port}, {:ssl, ssl}, {:timeout, @connection_timeout}]
+      end
 
     case :eldap.open([to_charlist(host)], options) do
       {:ok, connection} ->
         try do
-          if Keyword.get(ldap, :tls, false) do
+          cond do
+            ssl ->
               :application.ensure_all_started(:ssl)
 
+            tls ->
               case :eldap.start_tls(
                      connection,
-                   Keyword.merge(
-                     [
-                       verify: :verify_peer,
-                       cacerts: :certifi.cacerts(),
-                       customize_hostname_check: [
-                         fqdn_fun: fn _ -> to_charlist(host) end
-                       ]
-                     ],
-                     tlsopts
-                   ),
+                     tlsopts,
                      @connection_timeout
                    ) do
                 :ok ->
@@ -72,7 +81,11 @@ defmodule Pleroma.Web.Auth.LDAPAuthenticator do
 
                 error ->
                   Logger.error("Could not start TLS: #{inspect(error)}")
+                  :eldap.close(connection)
               end
+
+            true ->
+              :ok
           end
 
           bind_user(connection, ldap, name, password)
@@ -147,4 +160,16 @@ defmodule Pleroma.Web.Auth.LDAPAuthenticator do
       error -> error
     end
   end
+
+  defp decode_certfile(file) do
+    with {:ok, data} <- File.read(file) do
+      data
+      |> :public_key.pem_decode()
+      |> Enum.map(fn {_, b, _} -> b end)
+    else
+      _ ->
+        Logger.error("Unable to read certfile: #{file}")
+        []
+    end
+  end
 end

mix.exs

@@ -204,7 +204,6 @@ defmodule Pleroma.Mixfile do
       {:oban_live_dashboard, "~> 0.1.1"},
       {:multipart, "~> 0.4.0", optional: true},
       {:argon2_elixir, "~> 4.0"},
-      {:certifi, "~> 2.12"},
 
       ## dev & test
       {:phoenix_live_reload, "~> 1.3.3", only: :dev},