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nixpkgs/nixos/modules/services/web-apps/mediawiki.nix
2020-01-31 20:39:12 -05:00

463 lines
16 KiB
Nix

{ config, pkgs, lib, ... }:
let
inherit (lib) mkDefault mkEnableOption mkForce mkIf mkMerge mkOption;
inherit (lib) concatStringsSep literalExample mapAttrsToList optional optionals optionalString types;
cfg = config.services.mediawiki;
fpm = config.services.phpfpm.pools.mediawiki;
user = "mediawiki";
group = config.services.httpd.group;
cacheDir = "/var/cache/mediawiki";
stateDir = "/var/lib/mediawiki";
pkg = pkgs.stdenv.mkDerivation rec {
pname = "mediawiki-full";
version = src.version;
src = cfg.package;
installPhase = ''
mkdir -p $out
cp -r * $out/
rm -rf $out/share/mediawiki/skins/*
rm -rf $out/share/mediawiki/extensions/*
${concatStringsSep "\n" (mapAttrsToList (k: v: ''
ln -s ${v} $out/share/mediawiki/skins/${k}
'') cfg.skins)}
${concatStringsSep "\n" (mapAttrsToList (k: v: ''
ln -s ${v} $out/share/mediawiki/extensions/${k}
'') cfg.extensions)}
'';
};
mediawikiScripts = pkgs.runCommand "mediawiki-scripts" {
buildInputs = [ pkgs.makeWrapper ];
preferLocalBuild = true;
} ''
mkdir -p $out/bin
for i in changePassword.php createAndPromote.php userOptions.php edit.php nukePage.php update.php; do
makeWrapper ${pkgs.php}/bin/php $out/bin/mediawiki-$(basename $i .php) \
--set MEDIAWIKI_CONFIG ${mediawikiConfig} \
--add-flags ${pkg}/share/mediawiki/maintenance/$i
done
'';
mediawikiConfig = pkgs.writeText "LocalSettings.php" ''
<?php
# Protect against web entry
if ( !defined( 'MEDIAWIKI' ) ) {
exit;
}
$wgSitename = "${cfg.name}";
$wgMetaNamespace = false;
## The URL base path to the directory containing the wiki;
## defaults for all runtime URL paths are based off of this.
## For more information on customizing the URLs
## (like /w/index.php/Page_title to /wiki/Page_title) please see:
## https://www.mediawiki.org/wiki/Manual:Short_URL
$wgScriptPath = "";
## The protocol and server name to use in fully-qualified URLs
$wgServer = "${if cfg.virtualHost.addSSL || cfg.virtualHost.forceSSL || cfg.virtualHost.onlySSL then "https" else "http"}://${cfg.virtualHost.hostName}";
## The URL path to static resources (images, scripts, etc.)
$wgResourceBasePath = $wgScriptPath;
## The URL path to the logo. Make sure you change this from the default,
## or else you'll overwrite your logo when you upgrade!
$wgLogo = "$wgResourceBasePath/resources/assets/wiki.png";
## UPO means: this is also a user preference option
$wgEnableEmail = true;
$wgEnableUserEmail = true; # UPO
$wgEmergencyContact = "${if cfg.virtualHost.adminAddr != null then cfg.virtualHost.adminAddr else config.services.httpd.adminAddr}";
$wgPasswordSender = $wgEmergencyContact;
$wgEnotifUserTalk = false; # UPO
$wgEnotifWatchlist = false; # UPO
$wgEmailAuthentication = true;
## Database settings
$wgDBtype = "${cfg.database.type}";
$wgDBserver = "${cfg.database.host}:${if cfg.database.socket != null then cfg.database.socket else toString cfg.database.port}";
$wgDBname = "${cfg.database.name}";
$wgDBuser = "${cfg.database.user}";
${optionalString (cfg.database.passwordFile != null) "$wgDBpassword = file_get_contents(\"${cfg.database.passwordFile}\");"}
${optionalString (cfg.database.type == "mysql" && cfg.database.tablePrefix != null) ''
# MySQL specific settings
$wgDBprefix = "${cfg.database.tablePrefix}";
''}
${optionalString (cfg.database.type == "mysql") ''
# MySQL table options to use during installation or update
$wgDBTableOptions = "ENGINE=InnoDB, DEFAULT CHARSET=binary";
''}
## Shared memory settings
$wgMainCacheType = CACHE_NONE;
$wgMemCachedServers = [];
${optionalString (cfg.uploadsDir != null) ''
$wgEnableUploads = true;
$wgUploadDirectory = "${cfg.uploadsDir}";
''}
$wgUseImageMagick = true;
$wgImageMagickConvertCommand = "${pkgs.imagemagick}/bin/convert";
# InstantCommons allows wiki to use images from https://commons.wikimedia.org
$wgUseInstantCommons = false;
# Periodically send a pingback to https://www.mediawiki.org/ with basic data
# about this MediaWiki instance. The Wikimedia Foundation shares this data
# with MediaWiki developers to help guide future development efforts.
$wgPingback = true;
## If you use ImageMagick (or any other shell command) on a
## Linux server, this will need to be set to the name of an
## available UTF-8 locale
$wgShellLocale = "C.UTF-8";
## Set $wgCacheDirectory to a writable directory on the web server
## to make your wiki go slightly faster. The directory should not
## be publically accessible from the web.
$wgCacheDirectory = "${cacheDir}";
# Site language code, should be one of the list in ./languages/data/Names.php
$wgLanguageCode = "en";
$wgSecretKey = file_get_contents("${stateDir}/secret.key");
# Changing this will log out all existing sessions.
$wgAuthenticationTokenVersion = "";
## For attaching licensing metadata to pages, and displaying an
## appropriate copyright notice / icon. GNU Free Documentation
## License and Creative Commons licenses are supported so far.
$wgRightsPage = ""; # Set to the title of a wiki page that describes your license/copyright
$wgRightsUrl = "";
$wgRightsText = "";
$wgRightsIcon = "";
# Path to the GNU diff3 utility. Used for conflict resolution.
$wgDiff = "${pkgs.diffutils}/bin/diff";
$wgDiff3 = "${pkgs.diffutils}/bin/diff3";
# Enabled skins.
${concatStringsSep "\n" (mapAttrsToList (k: v: "wfLoadSkin('${k}');") cfg.skins)}
# Enabled extensions.
${concatStringsSep "\n" (mapAttrsToList (k: v: "wfLoadExtension('${k}');") cfg.extensions)}
# End of automatically generated settings.
# Add more configuration options below.
${cfg.extraConfig}
'';
in
{
# interface
options = {
services.mediawiki = {
enable = mkEnableOption "MediaWiki";
package = mkOption {
type = types.package;
default = pkgs.mediawiki;
description = "Which MediaWiki package to use.";
};
name = mkOption {
default = "MediaWiki";
example = "Foobar Wiki";
description = "Name of the wiki.";
};
uploadsDir = mkOption {
type = types.nullOr types.path;
default = "${stateDir}/uploads";
description = ''
This directory is used for uploads of pictures. The directory passed here is automatically
created and permissions adjusted as required.
'';
};
passwordFile = mkOption {
type = types.path;
description = "A file containing the initial password for the admin user.";
example = "/run/keys/mediawiki-password";
};
skins = mkOption {
default = {};
type = types.attrsOf types.path;
description = ''
List of paths whose content is copied to the 'skins'
subdirectory of the MediaWiki installation.
'';
};
extensions = mkOption {
default = {};
type = types.attrsOf types.path;
description = ''
List of paths whose content is copied to the 'extensions'
subdirectory of the MediaWiki installation.
'';
};
database = {
type = mkOption {
type = types.enum [ "mysql" "postgres" "sqlite" "mssql" "oracle" ];
default = "mysql";
description = "Database engine to use. MySQL/MariaDB is the database of choice by MediaWiki developers.";
};
host = mkOption {
type = types.str;
default = "localhost";
description = "Database host address.";
};
port = mkOption {
type = types.port;
default = 3306;
description = "Database host port.";
};
name = mkOption {
type = types.str;
default = "mediawiki";
description = "Database name.";
};
user = mkOption {
type = types.str;
default = "mediawiki";
description = "Database user.";
};
passwordFile = mkOption {
type = types.nullOr types.path;
default = null;
example = "/run/keys/mediawiki-dbpassword";
description = ''
A file containing the password corresponding to
<option>database.user</option>.
'';
};
tablePrefix = mkOption {
type = types.nullOr types.str;
default = null;
description = ''
If you only have access to a single database and wish to install more than
one version of MediaWiki, or have other applications that also use the
database, you can give the table names a unique prefix to stop any naming
conflicts or confusion.
See <link xlink:href='https://www.mediawiki.org/wiki/Manual:$wgDBprefix'/>.
'';
};
socket = mkOption {
type = types.nullOr types.path;
default = if cfg.database.createLocally then "/run/mysqld/mysqld.sock" else null;
defaultText = "/run/mysqld/mysqld.sock";
description = "Path to the unix socket file to use for authentication.";
};
createLocally = mkOption {
type = types.bool;
default = cfg.database.type == "mysql";
defaultText = "true";
description = ''
Create the database and database user locally.
This currently only applies if database type "mysql" is selected.
'';
};
};
virtualHost = mkOption {
type = types.submodule (import ../web-servers/apache-httpd/vhost-options.nix);
example = literalExample ''
{
hostName = "mediawiki.example.org";
adminAddr = "webmaster@example.org";
forceSSL = true;
enableACME = true;
}
'';
description = ''
Apache configuration can be done by adapting <option>services.httpd.virtualHosts</option>.
See <xref linkend="opt-services.httpd.virtualHosts"/> for further information.
'';
};
poolConfig = mkOption {
type = with types; attrsOf (oneOf [ str int bool ]);
default = {
"pm" = "dynamic";
"pm.max_children" = 32;
"pm.start_servers" = 2;
"pm.min_spare_servers" = 2;
"pm.max_spare_servers" = 4;
"pm.max_requests" = 500;
};
description = ''
Options for the MediaWiki PHP pool. See the documentation on <literal>php-fpm.conf</literal>
for details on configuration directives.
'';
};
extraConfig = mkOption {
type = types.lines;
description = ''
Any additional text to be appended to MediaWiki's
LocalSettings.php configuration file. For configuration
settings, see <link xlink:href="https://www.mediawiki.org/wiki/Manual:Configuration_settings"/>.
'';
default = "";
example = ''
$wgEnableEmail = false;
'';
};
};
};
# implementation
config = mkIf cfg.enable {
assertions = [
{ assertion = cfg.database.createLocally -> cfg.database.type == "mysql";
message = "services.mediawiki.createLocally is currently only supported for database type 'mysql'";
}
{ assertion = cfg.database.createLocally -> cfg.database.user == user;
message = "services.mediawiki.database.user must be set to ${user} if services.mediawiki.database.createLocally is set true";
}
{ assertion = cfg.database.createLocally -> cfg.database.socket != null;
message = "services.mediawiki.database.socket must be set if services.mediawiki.database.createLocally is set to true";
}
{ assertion = cfg.database.createLocally -> cfg.database.passwordFile == null;
message = "a password cannot be specified if services.mediawiki.database.createLocally is set to true";
}
];
services.mediawiki.skins = {
MonoBook = "${cfg.package}/share/mediawiki/skins/MonoBook";
Timeless = "${cfg.package}/share/mediawiki/skins/Timeless";
Vector = "${cfg.package}/share/mediawiki/skins/Vector";
};
services.mysql = mkIf cfg.database.createLocally {
enable = true;
package = mkDefault pkgs.mariadb;
ensureDatabases = [ cfg.database.name ];
ensureUsers = [
{ name = cfg.database.user;
ensurePermissions = { "${cfg.database.name}.*" = "ALL PRIVILEGES"; };
}
];
};
services.phpfpm.pools.mediawiki = {
inherit user group;
phpEnv.MEDIAWIKI_CONFIG = "${mediawikiConfig}";
settings = {
"listen.owner" = config.services.httpd.user;
"listen.group" = config.services.httpd.group;
} // cfg.poolConfig;
};
services.httpd = {
enable = true;
extraModules = [ "proxy_fcgi" ];
virtualHosts.${cfg.virtualHost.hostName} = mkMerge [ cfg.virtualHost {
documentRoot = mkForce "${pkg}/share/mediawiki";
extraConfig = ''
<Directory "${pkg}/share/mediawiki">
<FilesMatch "\.php$">
<If "-f %{REQUEST_FILENAME}">
SetHandler "proxy:unix:${fpm.socket}|fcgi://localhost/"
</If>
</FilesMatch>
Require all granted
DirectoryIndex index.php
AllowOverride All
</Directory>
'' + optionalString (cfg.uploadsDir != null) ''
Alias "/images" "${cfg.uploadsDir}"
<Directory "${cfg.uploadsDir}">
Require all granted
</Directory>
'';
} ];
};
systemd.tmpfiles.rules = [
"d '${stateDir}' 0750 ${user} ${group} - -"
"d '${cacheDir}' 0750 ${user} ${group} - -"
] ++ optionals (cfg.uploadsDir != null) [
"d '${cfg.uploadsDir}' 0750 ${user} ${group} - -"
"Z '${cfg.uploadsDir}' 0750 ${user} ${group} - -"
];
systemd.services.mediawiki-init = {
wantedBy = [ "multi-user.target" ];
before = [ "phpfpm-mediawiki.service" ];
after = optional cfg.database.createLocally "mysql.service";
script = ''
if ! test -e "${stateDir}/secret.key"; then
tr -dc A-Za-z0-9 </dev/urandom 2>/dev/null | head -c 64 > ${stateDir}/secret.key
fi
echo "exit( wfGetDB( DB_MASTER )->tableExists( 'user' ) ? 1 : 0 );" | \
${pkgs.php}/bin/php ${pkg}/share/mediawiki/maintenance/eval.php --conf ${mediawikiConfig} && \
${pkgs.php}/bin/php ${pkg}/share/mediawiki/maintenance/install.php \
--confpath /tmp \
--scriptpath / \
--dbserver ${cfg.database.host}${optionalString (cfg.database.socket != null) ":${cfg.database.socket}"} \
--dbport ${toString cfg.database.port} \
--dbname ${cfg.database.name} \
${optionalString (cfg.database.tablePrefix != null) "--dbprefix ${cfg.database.tablePrefix}"} \
--dbuser ${cfg.database.user} \
${optionalString (cfg.database.passwordFile != null) "--dbpassfile ${cfg.database.passwordFile}"} \
--passfile ${cfg.passwordFile} \
${cfg.name} \
admin
${pkgs.php}/bin/php ${pkg}/share/mediawiki/maintenance/update.php --conf ${mediawikiConfig} --quick
'';
serviceConfig = {
Type = "oneshot";
User = user;
Group = group;
PrivateTmp = true;
};
};
systemd.services.httpd.after = optional (cfg.database.createLocally && cfg.database.type == "mysql") "mysql.service";
users.users.${user} = {
group = group;
isSystemUser = true;
};
environment.systemPackages = [ mediawikiScripts ];
};
}