depot/nixos/modules/services/web-apps/limesurvey.nix
Luke Granger-Brown 57725ef3ec Squashed 'third_party/nixpkgs/' content from commit 76612b17c0ce
git-subtree-dir: third_party/nixpkgs
git-subtree-split: 76612b17c0ce71689921ca12d9ffdc9c23ce40b2
2024-11-10 23:59:47 +00:00

373 lines
13 KiB
Nix

{ config, lib, pkgs, ... }:
let
inherit (lib) mkDefault mkEnableOption mkForce mkIf mkMerge mkOption mkPackageOption;
inherit (lib) literalExpression mapAttrs optional optionalString types;
cfg = config.services.limesurvey;
fpm = config.services.phpfpm.pools.limesurvey;
user = "limesurvey";
group = config.services.httpd.group;
stateDir = "/var/lib/limesurvey";
configType = with types; oneOf [ (attrsOf configType) str int bool ] // {
description = "limesurvey config type (str, int, bool or attribute set thereof)";
};
limesurveyConfig = pkgs.writeText "config.php" ''
<?php
return \array_merge(
\json_decode('${builtins.toJSON cfg.config}', true),
[
'config' => [
'encryptionnonce' => \trim(\file_get_contents(\getenv('CREDENTIALS_DIRECTORY') . DIRECTORY_SEPARATOR . 'encryption_nonce')),
'encryptionsecretboxkey' => \trim(\file_get_contents(\getenv('CREDENTIALS_DIRECTORY') . DIRECTORY_SEPARATOR . 'encryption_key')),
]
]
);
?>
'';
mysqlLocal = cfg.database.createLocally && cfg.database.type == "mysql";
pgsqlLocal = cfg.database.createLocally && cfg.database.type == "pgsql";
in
{
# interface
options.services.limesurvey = {
enable = mkEnableOption "Limesurvey web application";
package = mkPackageOption pkgs "limesurvey" { };
encryptionKey = mkOption {
type = types.nullOr types.str;
default = null;
visible = false;
description = ''
This is a 32-byte key used to encrypt variables in the database.
You _must_ change this from the default value.
'';
};
encryptionNonce = mkOption {
type = types.nullOr types.str;
default = null;
visible = false;
description = ''
This is a 24-byte nonce used to encrypt variables in the database.
You _must_ change this from the default value.
'';
};
encryptionKeyFile = mkOption {
type = types.nullOr types.path;
default = null;
description = ''
32-byte key used to encrypt variables in the database.
Note: It should be string not a store path in order to prevent the password from being world readable
'';
};
encryptionNonceFile = mkOption {
type = types.nullOr types.path;
default = null;
description = ''
24-byte used to encrypt variables in the database.
Note: It should be string not a store path in order to prevent the password from being world readable
'';
};
database = {
type = mkOption {
type = types.enum [ "mysql" "pgsql" "odbc" "mssql" ];
example = "pgsql";
default = "mysql";
description = "Database engine to use.";
};
dbEngine = mkOption {
type = types.enum [ "MyISAM" "InnoDB" ];
default = "InnoDB";
description = "Database storage engine to use.";
};
host = mkOption {
type = types.str;
default = "localhost";
description = "Database host address.";
};
port = mkOption {
type = types.port;
default = if cfg.database.type == "pgsql" then 5442 else 3306;
defaultText = literalExpression "3306";
description = "Database host port.";
};
name = mkOption {
type = types.str;
default = "limesurvey";
description = "Database name.";
};
user = mkOption {
type = types.str;
default = "limesurvey";
description = "Database user.";
};
passwordFile = mkOption {
type = types.nullOr types.path;
default = null;
example = "/run/keys/limesurvey-dbpassword";
description = ''
A file containing the password corresponding to
{option}`database.user`.
'';
};
socket = mkOption {
type = types.nullOr types.path;
default =
if mysqlLocal then "/run/mysqld/mysqld.sock"
else if pgsqlLocal then "/run/postgresql"
else null
;
defaultText = literalExpression "/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 = literalExpression "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 = literalExpression ''
{
hostName = "survey.example.org";
adminAddr = "webmaster@example.org";
forceSSL = true;
enableACME = true;
}
'';
description = ''
Apache configuration can be done by adapting `services.httpd.virtualHosts.<name>`.
See [](#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 LimeSurvey PHP pool. See the documentation on `php-fpm.conf`
for details on configuration directives.
'';
};
config = mkOption {
type = configType;
default = {};
description = ''
LimeSurvey configuration. Refer to
<https://manual.limesurvey.org/Optional_settings>
for details on supported values.
'';
};
};
# implementation
config = mkIf cfg.enable {
assertions = [
{ assertion = cfg.database.createLocally -> cfg.database.type == "mysql";
message = "services.limesurvey.createLocally is currently only supported for database type 'mysql'";
}
{ assertion = cfg.database.createLocally -> cfg.database.user == user;
message = "services.limesurvey.database.user must be set to ${user} if services.limesurvey.database.createLocally is set true";
}
{ assertion = cfg.database.createLocally -> cfg.database.socket != null;
message = "services.limesurvey.database.socket must be set if services.limesurvey.database.createLocally is set to true";
}
{ assertion = cfg.database.createLocally -> cfg.database.passwordFile == null;
message = "a password cannot be specified if services.limesurvey.database.createLocally is set to true";
}
{ assertion = cfg.encryptionKey != null || cfg.encryptionKeyFile != null;
message = ''
You must set `services.limesurvey.encryptionKeyFile` to a file containing a 32-character uppercase hex string.
If this message appears when updating your system, please turn off encryption
in the LimeSurvey interface and create backups before filling the key.
'';
}
{ assertion = cfg.encryptionNonce != null || cfg.encryptionNonceFile != null;
message = ''
You must set `services.limesurvey.encryptionNonceFile` to a file containing a 24-character uppercase hex string.
If this message appears when updating your system, please turn off encryption
in the LimeSurvey interface and create backups before filling the nonce.
'';
}
];
services.limesurvey.config = mapAttrs (name: mkDefault) {
runtimePath = "${stateDir}/tmp/runtime";
components = {
db = {
connectionString = "${cfg.database.type}:dbname=${cfg.database.name};host=${if pgsqlLocal then cfg.database.socket else cfg.database.host};port=${toString cfg.database.port}" +
optionalString mysqlLocal ";socket=${cfg.database.socket}";
username = cfg.database.user;
password = mkIf (cfg.database.passwordFile != null) "file_get_contents(\"${toString cfg.database.passwordFile}\");";
tablePrefix = "limesurvey_";
};
assetManager.basePath = "${stateDir}/tmp/assets";
urlManager = {
urlFormat = "path";
showScriptName = false;
};
};
config = {
tempdir = "${stateDir}/tmp";
uploaddir = "${stateDir}/upload";
force_ssl = mkIf (cfg.virtualHost.addSSL || cfg.virtualHost.forceSSL || cfg.virtualHost.onlySSL) "on";
config.defaultlang = "en";
};
};
services.mysql = mkIf mysqlLocal {
enable = true;
package = mkDefault pkgs.mariadb;
ensureDatabases = [ cfg.database.name ];
ensureUsers = [
{ name = cfg.database.user;
ensurePermissions = {
"${cfg.database.name}.*" = "SELECT, CREATE, INSERT, UPDATE, DELETE, ALTER, DROP, INDEX";
};
}
];
};
services.phpfpm.pools.limesurvey = {
inherit user group;
phpPackage = pkgs.php81;
phpEnv.DBENGINE = "${cfg.database.dbEngine}";
phpEnv.LIMESURVEY_CONFIG = "${limesurveyConfig}";
# App code cannot access credentials directly since the service starts
# with the root user so we copy the credentials to a place accessible to Limesurvey
phpEnv.CREDENTIALS_DIRECTORY = "${stateDir}/credentials";
settings = {
"listen.owner" = config.services.httpd.user;
"listen.group" = config.services.httpd.group;
} // cfg.poolConfig;
};
systemd.services.phpfpm-limesurvey.serviceConfig = {
ExecStartPre = pkgs.writeShellScript "limesurvey-phpfpm-exec-pre" ''
cp -f "''${CREDENTIALS_DIRECTORY}"/encryption_key "${stateDir}/credentials/encryption_key"
chown ${user}:${group} "${stateDir}/credentials/encryption_key"
cp -f "''${CREDENTIALS_DIRECTORY}"/encryption_nonce "${stateDir}/credentials/encryption_nonce"
chown ${user}:${group} "${stateDir}/credentials/encryption_nonce"
'';
LoadCredential = [
"encryption_key:${if cfg.encryptionKeyFile != null then cfg.encryptionKeyFile else pkgs.writeText "key" cfg.encryptionKey}"
"encryption_nonce:${if cfg.encryptionNonceFile != null then cfg.encryptionNonceFile else pkgs.writeText "nonce" cfg.encryptionKey}"
];
};
services.httpd = {
enable = true;
adminAddr = mkDefault cfg.virtualHost.adminAddr;
extraModules = [ "proxy_fcgi" ];
virtualHosts.${cfg.virtualHost.hostName} = mkMerge [ cfg.virtualHost {
documentRoot = mkForce "${cfg.package}/share/limesurvey";
extraConfig = ''
Alias "/tmp" "${stateDir}/tmp"
<Directory "${stateDir}">
AllowOverride all
Require all granted
Options -Indexes +FollowSymlinks
</Directory>
Alias "/upload" "${stateDir}/upload"
<Directory "${stateDir}/upload">
AllowOverride all
Require all granted
Options -Indexes
</Directory>
<Directory "${cfg.package}/share/limesurvey">
<FilesMatch "\.php$">
<If "-f %{REQUEST_FILENAME}">
SetHandler "proxy:unix:${fpm.socket}|fcgi://localhost/"
</If>
</FilesMatch>
AllowOverride all
Options -Indexes
DirectoryIndex index.php
</Directory>
'';
} ];
};
systemd.tmpfiles.rules = [
"d ${stateDir} 0750 ${user} ${group} - -"
"d ${stateDir}/tmp 0750 ${user} ${group} - -"
"d ${stateDir}/tmp/assets 0750 ${user} ${group} - -"
"d ${stateDir}/tmp/runtime 0750 ${user} ${group} - -"
"d ${stateDir}/tmp/upload 0750 ${user} ${group} - -"
"d ${stateDir}/credentials 0700 ${user} ${group} - -"
"C ${stateDir}/upload 0750 ${user} ${group} - ${cfg.package}/share/limesurvey/upload"
];
systemd.services.limesurvey-init = {
wantedBy = [ "multi-user.target" ];
before = [ "phpfpm-limesurvey.service" ];
after = optional mysqlLocal "mysql.service" ++ optional pgsqlLocal "postgresql.service";
environment.DBENGINE = "${cfg.database.dbEngine}";
environment.LIMESURVEY_CONFIG = limesurveyConfig;
script = ''
# update or install the database as required
${pkgs.php81}/bin/php ${cfg.package}/share/limesurvey/application/commands/console.php updatedb || \
${pkgs.php81}/bin/php ${cfg.package}/share/limesurvey/application/commands/console.php install admin password admin admin@example.com verbose
'';
serviceConfig = {
User = user;
Group = group;
Type = "oneshot";
LoadCredential = [
"encryption_key:${if cfg.encryptionKeyFile != null then cfg.encryptionKeyFile else pkgs.writeText "key" cfg.encryptionKey}"
"encryption_nonce:${if cfg.encryptionNonceFile != null then cfg.encryptionNonceFile else pkgs.writeText "nonce" cfg.encryptionKey}"
];
};
};
systemd.services.httpd.after = optional mysqlLocal "mysql.service" ++ optional pgsqlLocal "postgresql.service";
users.users.${user} = {
group = group;
isSystemUser = true;
};
};
}