indico: wip: add LDAP support

Signed-off-by: Jeltz <jeltz@federez.net>

modules/indico.nix

@@ -14,7 +14,9 @@ let
   pythonEnv = pkgs.python3.withPackages (ps: [
     (ps.toPythonModule indico)
     ps.gunicorn
-  ]);
+  ]
+  ++ lib.optionals (cfg.ldap != null)
+    indico.optional-dependencies.ldap);
   redisSocket = config.services.redis.servers.${cfg.redis.name}.unixSocket;
   indicoSocket = "/run/indico/indico.sock";
   baseDir = "${pythonEnv}/${pythonEnv.sitePackages}/indico";
@@ -36,7 +38,23 @@ let
       format = "%(levelname)s %(request_id)s %(user_id)s %(name)s %(message)s";
     };
   };
-  configFile = pythonFmt.generate "indico.conf" {
+  ldapConfig = {
+    uri = cfg.ldap.uri;
+    bind_dn = cfg.ldap.bindDN;
+    bind_password = cfg.ldap.bindPassword;
+    timeout = 30;
+    verify_cert = true;
+    page_size = 1500;
+    uid = cfg.ldap.uid;
+    user_base = cfg.ldap.userBaseDN;
+    user_filter = cfg.ldap.userFilter;
+    gid = cfg.ldap.gid;
+    group_base = cfg.ldap.groupBaseDN;
+    group_filter = cfg.ldap.groupFilter;
+    member_of_attr = cfg.ldap.memberOf;
+    ad_group_style = false;
+  };
+  configFile = pythonFmt.generate "indico.conf" ({
     SQLALCHEMY_DATABASE_URI = cfg.database;
     CACHE_DIR = "${cfg.stateDir}/cache";
     TEMP_DIR = "${cfg.stateDir}/tmp";
@@ -64,9 +82,27 @@ let
     SMTP_LOGIN = cfg.email.smtp.login;
     SMTP_PASSWORD = cfg.email.smtp.password;
     SMTP_USE_TLS = cfg.email.smtp.useTLS;
+  } // lib.optionalAttrs (cfg.ldap != null) {
+    AUTH_PROVIDERS = {
+      ldap = {
+        type = "ldap";
+        title = "LDAP";
+        ldap = ldapConfig;
+        default = true;
       };
-in
-{
+    };
+    IDENTITY_PROVIDERS = {
+      ldap = {
+        type = "ldap";
+        title = "LDAP";
+        ldap = ldapConfig;
+        mapping = cfg.ldap.mapping;
+        trusted_email = cfg.ldap.trustedEmail;
+        synced_fields = cfg.ldap.syncedFields;
+      };
+    };
+  });
+in {
   # TODO cProfile; indico standalone command is *very* slow
   # (~30s just to print the help)
 
@@ -235,6 +271,91 @@ in
         "postgresql://@/${cfg.user}?host=/run/postgresql";
       description = "Database URL.";
     };
+
+    ldap = lib.mkOption {
+      type = lib.types.nullOr (lib.types.submodule {
+        options = {
+          uri = lib.mkOption {
+            type = lib.types.str;
+            description = "LDAP server URI.";
+          };
+
+          bindDN = lib.mkOption {
+            type = lib.types.str;
+            description = "LDAP server bind DN.";
+          };
+
+          bindPassword = lib.mkOption {
+            type = lib.types.str;
+            description = "LDAP server bind password.";
+          };
+
+          uid = lib.mkOption {
+            type = lib.types.str;
+            default = "uid";
+            description = "LDAP UID attribute.";
+          };
+
+          userBaseDN = lib.mkOption {
+            type = lib.types.str;
+            description = "LDAP users base DN.";
+          };
+
+          userFilter = lib.mkOption {
+            type = lib.types.str;
+            description = "LDAP users filter.";
+          };
+
+          gid = lib.mkOption {
+            type = lib.types.str;
+            default = "gid";
+            description = "LDAP GID attribute.";
+          };
+
+          groupBaseDN = lib.mkOption {
+            type = lib.types.str;
+            description = "LDAP groups base DN.";
+          };
+
+          groupFilter = lib.mkOption {
+            type = lib.types.str;
+            description = "LDAP groups filter.";
+          };
+
+          memberOf = lib.mkOption {
+            type = lib.types.str;
+            default = "memberOf";
+            description = "LDAP memberOf attribute.";
+          };
+
+          mapping = lib.mkOption {
+            type = lib.types.attrsOf lib.types.str;
+            default = {
+              first_name = "givenName";
+              last_name = "sn";
+              email = "mail";
+              affiliation = "company";
+              phone = "telephoneNumber";
+            };
+            description = "Mapping between local and LDAP fields.";
+          };
+
+          trustedEmail = lib.mkOption {
+            type = lib.types.bool;
+            default = true;
+            description = "Whether LDAP emails are to be trusted.";
+          };
+
+          syncedFields = lib.mkOption {
+            type = lib.types.listOf lib.types.str;
+            default = [ "first_name" "last_name" ];
+            description = "Fields to sync with LDAP server.";
+          };
+        };
+      });
+      default = null;
+      description = "LDAP authentication and identity provider configuration.";
+    };
   };
 
   config = lib.mkIf cfg.enable {
@@ -254,12 +375,10 @@ in
       package = pkgs.postgresql_16; # TODO add setting
       # TODO db name != cfg.user
       ensureDatabases = [ cfg.user ];
-      ensureUsers = [
-        {
+      ensureUsers = [{
         name = cfg.user;
         ensureDBOwnership = true;
-        }
-      ];
+      }];
     };
 
     environment.systemPackages =
@@ -268,7 +387,7 @@ in
           #!${pkgs.runtimeShell}
           sudo=exec
           if [[ "$USER" != "indico" ]]; then
-            sudo='exec /run/wrappers/bin/sudo -u indico -E INDICO_CONFIG'
+            sudo='exec /run/wrappers/bin/sudo -u indico --preserve-env=INDICO_CONFIG'
           fi
           export INDICO_CONFIG=${configFile}
           $sudo ${lib.getExe' pythonEnv "indico"} "$@"
@@ -311,9 +430,7 @@ in
       {
         indico-db = lib.recursiveUpdate common {
           description = "Indico database preparation and upgrade";
-          after = [
-            "postgresql.service"
-          ];
+          after = [ "postgresql.service" ];
           serviceConfig.Type = "oneshot";
           # Source: pretalx module ; passer par un service oneshot
           script = ''

pkgs/indico/default.nix

@@ -69,7 +69,6 @@ python.pkgs.buildPythonApplication rec {
   INDICO_NO_GIT = "true";
   INDICO_MAP_VERSION = src.outputHash;
 
-  # TODO bin/maintenance/build-{wheel,assets}.py
   build-system = [
     python.pkgs.hatchling
     python.pkgs.hatch-requirements-txt
@@ -97,7 +96,7 @@ python.pkgs.buildPythonApplication rec {
   # FIXME *why* is it required?
   makeCacheWritable = true;
 
-  npmFlags = [ "--verbose" ];
+  # npmFlags = [ "--verbose" ];
 
   patches = [
     ./remove_marshmallow_enum.patch
@@ -137,11 +136,9 @@ python.pkgs.buildPythonApplication rec {
     # TODO TODO ./bin/maintenance/build-assets.py
   '';
 
-  # TODO build-assets.py
   # build_urls_map.py tries to import indico.web.flask.app
   # which has not been installed yet at this stage
   preBuild = ''
-    ls -lah
     PYTHONPATH="$(pwd):$PYTHONPATH" ${lib.getExe python} bin/maintenance/build-assets.py indico --clean
   '';
 
@@ -233,9 +230,9 @@ python.pkgs.buildPythonApplication rec {
     ++ sentry-sdk_1.optional-dependencies.pure_eval
     ++ wtforms.optional-dependencies.email;
 
-  # passthru = {
-  #   inherit python;
-  # };
+  optional-dependencies = {
+    ldap = [ python.pkgs.python-ldap ];
+  };
 
   meta = {
     description = "Full-featured conferency lifecycle management and meeting/lecture scheduling tool";