WIP: bekkalokk: init mediawiki

Co-authored-by: Jørn Åne <yorinad@pvv.ntnu.no>

hosts/bekkalokk/configuration.nix

@@ -14,7 +14,7 @@
     ./services/gitea/default.nix
     ./services/kerberos
     ./services/webmail
-    # ./services/mediawiki.nix
+    ./services/mediawiki
     ./services/idp-simplesamlphp
   ];
 

hosts/bekkalokk/services/idp-simplesamlphp/authpwauth.php

@@ -4,6 +4,7 @@
  * Authenticate using HTTP login.
  *
  * @author Yorn de Jong
+ * @author Oystein Kristoffer Tveit
  * @package simpleSAMLphp
  */
 

hosts/bekkalokk/services/mediawiki/default.nix

@@ -1,4 +1,4 @@
-{ pkgs, lib, config, values, ... }: let
+{ pkgs, lib, config, values, pkgs-unstable, ... }: let
   cfg = config.services.mediawiki;
 
   # "mediawiki"
@@ -6,14 +6,38 @@
 
   # "mediawiki"
   group = config.users.users.${user}.group;
+
+  simplesamlphp = pkgs.simplesamlphp.override {
+    extra_files = {
+      "metadata/saml20-idp-remote.php" = pkgs.writeText "mediawiki-saml20-idp-remote.php" (import ../idp-simplesamlphp/metadata.php.nix);
+
+      "config/authsources.php" = ./simplesaml-authsources.php;
+
+      "config/config.php" = pkgs.runCommandLocal "mediawiki-simplesamlphp-config.php" { } ''
+        cp ${./simplesaml-config.php} "$out"
+
+        substituteInPlace "$out" \
+          --replace '$SAML_COOKIE_SECURE' 'true' \
+          --replace '$SAML_COOKIE_SALT' 'file_get_contents("${config.sops.secrets."mediawiki/simplesamlphp/cookie_salt".path}")' \
+          --replace '$SAML_ADMIN_NAME' '"Drift"' \
+          --replace '$SAML_ADMIN_EMAIL' '"drift@pvv.ntnu.no"' \
+          --replace '$SAML_ADMIN_PASSWORD' 'file_get_contents("${config.sops.secrets."mediawiki/simplesamlphp/admin_password".path}")' \
+          --replace '$SAML_TRUSTED_DOMAINS' 'array( "wiki2.pvv.ntnu.no" )' \
+          --replace '$STATE_DIRECTORY' '/var/lib/mediawiki' \
+          --replace '$CACHE_DIRECTORY' '/var/cache/mediawiki/idp'
+      '';
+    };
+  };
 in {
+  services.idp.sp-remote-metadata = [ "https://wiki2.pvv.ntnu.no/simplesaml/" ];
+
   sops.secrets = {
     "mediawiki/password" = {
       restartUnits = [ "mediawiki-init.service" "phpfpm-mediawiki.service" ];
       owner = user;
       group = group;
     };
-    "keys/postgres/mediawiki" = {
+    "mediawiki/database" = {
       restartUnits = [ "mediawiki-init.service" "phpfpm-mediawiki.service" ];
       owner = user;
       group = group;
@@ -30,7 +54,7 @@ in {
       type = "postgres";
       host = "postgres.pvv.ntnu.no";
       port = config.services.postgresql.port;
-      passwordFile = config.sops.secrets."keys/postgres/mediawiki".path;
+      passwordFile = config.sops.secrets."mediawiki/database".path;
       createLocally = false;
       # TODO: create a normal database and copy over old data when the service is production ready
       name = "mediawiki_test";
@@ -51,10 +75,11 @@ in {
       "pm.max_spare_servers" = 4;
       "listen.owner" = listenUser;
       "listen.group" = listenGroup;
-      "php_admin_value[error_log]" = "stderr";
-      "php_admin_flag[log_errors]" = "on";
-      "env[PATH]" = lib.makeBinPath [ pkgs.php ];
+
       "catch_workers_output" = true;
+      "php_admin_flag[log_errors]" = true;
+      # "php_admin_value[error_log]" = "stderr";
+
       # to accept *.html file
       "security.limit_extensions" = "";
     };
@@ -63,35 +88,8 @@ in {
       inherit (pkgs.mediawiki-extensions) DeleteBatch UserMerge PluggableAuth SimpleSAMLphp;
     };
 
-    extraConfig = let
-
-      SimpleSAMLphpRepo = pkgs.stdenvNoCC.mkDerivation rec {
-        pname = "configuredSimpleSAML";
-	version = "2.0.4";
-        src = pkgs.fetchzip {
-          url = "https://github.com/simplesamlphp/simplesamlphp/releases/download/v${version}/simplesamlphp-${version}.tar.gz";
-          sha256 = "sha256-pfMV/VmqqxgtG7Nx4s8MW4tWSaxOkVPtCRJwxV6RDSE=";
-        };
-
-	buildPhase = ''
-          cat > config/authsources.php << EOF
-          <?php
-          $config = array(
-            'default-sp' => array(
-              'saml:SP',
-              'idp' => 'https://idp.pvv.ntnu.no/',
-            ),
-          );
-	  EOF
-	'';
-
-	installPhase = ''
-	  cp -r . $out
-	'';
-      };
-
-    in ''
-      $wgServer = "https://bekkalokk.pvv.ntnu.no";
+    extraConfig = ''
+      $wgServer = "https://wiki2.pvv.ntnu.no";
       $wgLocaltimezone = "Europe/Oslo";
 
       # Only allow login through SSO
@@ -106,7 +104,10 @@ in {
       $wgGroupPermissions['*']['edit'] = false;
 
       # Styling
-      $wgLogo = "/PNG/PVV-logo.png";
+      $wgLogos = array(
+        "2x" => "/PNG/PVV-logo.png",
+        "svg" => "/PNG/PVV-logo.svg",
+      );
       $wgDefaultSkin = "monobook";
 
       # Misc
@@ -116,17 +117,30 @@ in {
       $wgLocalInterwiki = $wgSitename;
 
       # SimpleSAML
-      $wgSimpleSAMLphp_InstallDir = "${SimpleSAMLphpRepo}";
-      $wgSimpleSAMLphp_AuthSourceId = "default-sp";
-      $wgSimpleSAMLphp_RealNameAttribute = "cn";
-      $wgSimpleSAMLphp_EmailAttribute = "mail";
-      $wgSimpleSAMLphp_UsernameAttribute = "uid";
+      $wgSimpleSAMLphp_InstallDir = "${simplesamlphp}/share/php/simplesamlphp/";
+      $wgPluggableAuth_Config['Log in using my SAML'] = [
+        'plugin' => 'SimpleSAMLphp',
+        'data' => [
+          'authSourceId' => 'default-sp',
+          'usernameAttribute' => 'uid',
+          'emailAttribute' => 'mail',
+          'realNameAttribute' => 'cn',
+        ]
+      ];
 
       # Fix https://github.com/NixOS/nixpkgs/issues/183097
       $wgDBserver = "${toString cfg.database.host}";
     '';
   };
 
+  # Cache directory for simplesamlphp
+  # systemd.services.phpfpm-mediawiki.serviceConfig.CacheDirectory = "mediawiki/simplesamlphp";
+  systemd.tmpfiles.settings."10-mediawiki"."/var/cache/mediawiki/simplesamlphp".d = {
+    user = "mediawiki";
+    group = "mediawiki";
+    mode = "0770";
+  };
+
   # Override because of https://github.com/NixOS/nixpkgs/issues/183097
   systemd.services.mediawiki-init.script = let
     # According to module
@@ -157,4 +171,49 @@ in {
 
     ${pkgs.php}/bin/php ${pkg}/share/mediawiki/maintenance/update.php --conf ${mediawikiConfig} --quick
   '';
+
+  services.nginx.virtualHosts."wiki2.pvv.ntnu.no" = {
+    forceSSL = true;
+    enableACME = true;
+    root = "${config.services.mediawiki.finalPackage}/share/mediawiki";
+    locations =  {
+      "/" = {
+	index = "index.php";
+      };
+
+      "~ /(.+\\.php)" = {
+        extraConfig = ''
+          fastcgi_split_path_info ^(.+\.php)(/.+)$;
+          fastcgi_index index.php;
+          fastcgi_pass unix:${config.services.phpfpm.pools.mediawiki.socket};
+          include ${pkgs.nginx}/conf/fastcgi_params;
+          include ${pkgs.nginx}/conf/fastcgi.conf;
+        '';
+      };
+
+      # based on https://simplesamlphp.org/docs/stable/simplesamlphp-install.html#configuring-nginx
+      "^~ /simplesaml/" = {
+        alias = "${simplesamlphp}/share/php/simplesamlphp/public/";
+        index = "index.php";
+
+        extraConfig = ''
+          location ~ ^/simplesaml/(?<phpfile>.+?\.php)(?<pathinfo>/.*)?$ {
+            include ${pkgs.nginx}/conf/fastcgi_params;
+            fastcgi_pass unix:${config.services.phpfpm.pools.mediawiki.socket}; 
+            fastcgi_param SCRIPT_FILENAME ${simplesamlphp}/share/php/simplesamlphp/public/$phpfile;
+
+            # Must be prepended with the baseurlpath
+            fastcgi_param SCRIPT_NAME /simplesaml/$phpfile;
+
+            fastcgi_param PATH_INFO $pathinfo if_not_empty;
+          }
+        '';
+      };
+
+      "/images".root = config.services.mediawiki.uploadsDir;
+
+      "= /PNG/PVV-logo.png".alias = ../../../../assets/logo_blue_regular.png;
+      "= /PNG/PVV-logo.svg".alias = ../../../../assets/logo_blue_regular.svg;
+    };
+  };
 }

hosts/bekkalokk/services/mediawiki/simplesaml-authsources.php

@@ -0,0 +1,12 @@
+<?php
+$config = array(
+    'admin' => array(
+      'core:AdminPassword'
+    ),
+    'default-sp' => array(
+        'saml:SP',
+        'entityID' => 'https://wiki2.pvv.ntnu.no/simplesaml/',
+        # 'entityID' => 'https://idp2.pvv.ntnu.no/',
+        'idp' => 'https://idp2.pvv.ntnu.no/',
+    ),
+);