ed30d3b02f
With version 17 of Keycloak, the Wildfly based distribution was deprecated in favor of the one based on Quarkus. The difference in configuration is massive and to accommodate it, both the package and module had to be rewritten.
682 lines
24 KiB
Nix
682 lines
24 KiB
Nix
{ config, options, pkgs, lib, ... }:
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let
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cfg = config.services.keycloak;
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opt = options.services.keycloak;
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inherit (lib)
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types
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mkMerge
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mkOption
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mkChangedOptionModule
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mkRenamedOptionModule
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mkRemovedOptionModule
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concatStringsSep
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mapAttrsToList
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escapeShellArg
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mkIf
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optionalString
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optionals
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mkDefault
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literalExpression
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isAttrs
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literalDocBook
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maintainers
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catAttrs
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collect
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splitString
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;
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inherit (builtins)
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elem
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typeOf
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isInt
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isString
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hashString
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isPath
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;
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prefixUnlessEmpty = prefix: string: optionalString (string != "") "${prefix}${string}";
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in
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{
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imports =
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[
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(mkRenamedOptionModule
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[ "services" "keycloak" "bindAddress" ]
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[ "services" "keycloak" "settings" "http-host" ])
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(mkRenamedOptionModule
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[ "services" "keycloak" "forceBackendUrlToFrontendUrl"]
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[ "services" "keycloak" "settings" "hostname-strict-backchannel"])
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(mkChangedOptionModule
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[ "services" "keycloak" "httpPort" ]
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[ "services" "keycloak" "settings" "http-port" ]
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(config:
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builtins.fromJSON config.services.keycloak.httpPort))
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(mkChangedOptionModule
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[ "services" "keycloak" "httpsPort" ]
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[ "services" "keycloak" "settings" "https-port" ]
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(config:
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builtins.fromJSON config.services.keycloak.httpsPort))
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(mkRemovedOptionModule
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[ "services" "keycloak" "frontendUrl" ]
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''
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Set `services.keycloak.settings.hostname' and `services.keycloak.settings.http-relative-path' instead.
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NOTE: You likely want to set 'http-relative-path' to '/auth' to keep compatibility with your clients.
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See its description for more information.
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'')
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(mkRemovedOptionModule
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[ "services" "keycloak" "extraConfig" ]
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"Use `services.keycloak.settings' instead.")
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];
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options.services.keycloak =
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let
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inherit (types)
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bool
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str
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int
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nullOr
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attrsOf
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oneOf
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path
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enum
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package
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port;
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assertStringPath = optionName: value:
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if isPath value then
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throw ''
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services.keycloak.${optionName}:
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${toString value}
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is a Nix path, but should be a string, since Nix
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paths are copied into the world-readable Nix store.
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''
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else value;
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in
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{
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enable = mkOption {
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type = bool;
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default = false;
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example = true;
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description = ''
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Whether to enable the Keycloak identity and access management
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server.
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'';
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};
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sslCertificate = mkOption {
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type = nullOr path;
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default = null;
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example = "/run/keys/ssl_cert";
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apply = assertStringPath "sslCertificate";
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description = ''
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The path to a PEM formatted certificate to use for TLS/SSL
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connections.
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'';
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};
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sslCertificateKey = mkOption {
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type = nullOr path;
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default = null;
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example = "/run/keys/ssl_key";
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apply = assertStringPath "sslCertificateKey";
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description = ''
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The path to a PEM formatted private key to use for TLS/SSL
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connections.
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'';
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};
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plugins = lib.mkOption {
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type = lib.types.listOf lib.types.path;
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default = [ ];
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description = ''
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Keycloak plugin jar, ear files or derivations containing
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them. Packaged plugins are available through
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<literal>pkgs.keycloak.plugins</literal>.
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'';
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};
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database = {
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type = mkOption {
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type = enum [ "mysql" "mariadb" "postgresql" ];
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default = "postgresql";
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example = "mariadb";
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description = ''
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The type of database Keycloak should connect to.
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'';
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};
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host = mkOption {
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type = str;
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default = "localhost";
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description = ''
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Hostname of the database to connect to.
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'';
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};
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port =
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let
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dbPorts = {
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postgresql = 5432;
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mariadb = 3306;
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mysql = 3306;
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};
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in
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mkOption {
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type = port;
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default = dbPorts.${cfg.database.type};
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defaultText = literalDocBook "default port of selected database";
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description = ''
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Port of the database to connect to.
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'';
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};
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useSSL = mkOption {
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type = bool;
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default = cfg.database.host != "localhost";
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defaultText = literalExpression ''config.${opt.database.host} != "localhost"'';
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description = ''
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Whether the database connection should be secured by SSL /
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TLS.
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'';
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};
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caCert = mkOption {
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type = nullOr path;
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default = null;
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description = ''
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The SSL / TLS CA certificate that verifies the identity of the
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database server.
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Required when PostgreSQL is used and SSL is turned on.
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For MySQL, if left at <literal>null</literal>, the default
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Java keystore is used, which should suffice if the server
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certificate is issued by an official CA.
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'';
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};
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createLocally = mkOption {
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type = bool;
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default = true;
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description = ''
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Whether a database should be automatically created on the
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local host. Set this to false if you plan on provisioning a
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local database yourself. This has no effect if
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services.keycloak.database.host is customized.
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'';
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};
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name = mkOption {
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type = str;
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default = "keycloak";
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description = ''
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Database name to use when connecting to an external or
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manually provisioned database; has no effect when a local
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database is automatically provisioned.
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To use this with a local database, set <xref
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linkend="opt-services.keycloak.database.createLocally" /> to
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<literal>false</literal> and create the database and user
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manually.
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'';
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};
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username = mkOption {
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type = str;
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default = "keycloak";
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description = ''
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Username to use when connecting to an external or manually
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provisioned database; has no effect when a local database is
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automatically provisioned.
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To use this with a local database, set <xref
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linkend="opt-services.keycloak.database.createLocally" /> to
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<literal>false</literal> and create the database and user
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manually.
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'';
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};
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passwordFile = mkOption {
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type = path;
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example = "/run/keys/db_password";
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apply = assertStringPath "passwordFile";
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description = ''
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The path to a file containing the database password.
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'';
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};
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};
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package = mkOption {
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type = package;
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default = pkgs.keycloak;
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defaultText = literalExpression "pkgs.keycloak";
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description = ''
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Keycloak package to use.
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'';
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};
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initialAdminPassword = mkOption {
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type = str;
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default = "changeme";
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description = ''
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Initial password set for the <literal>admin</literal>
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user. The password is not stored safely and should be changed
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immediately in the admin panel.
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'';
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};
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themes = mkOption {
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type = attrsOf package;
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default = { };
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description = ''
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Additional theme packages for Keycloak. Each theme is linked into
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subdirectory with a corresponding attribute name.
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Theme packages consist of several subdirectories which provide
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different theme types: for example, <literal>account</literal>,
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<literal>login</literal> etc. After adding a theme to this option you
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can select it by its name in Keycloak administration console.
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'';
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};
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settings = mkOption {
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type = lib.types.submodule {
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freeformType = attrsOf (nullOr (oneOf [ str int bool (attrsOf path) ]));
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options = {
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http-host = mkOption {
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type = str;
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default = "0.0.0.0";
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example = "127.0.0.1";
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description = ''
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On which address Keycloak should accept new connections.
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'';
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};
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http-port = mkOption {
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type = port;
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default = 80;
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example = 8080;
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description = ''
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On which port Keycloak should listen for new HTTP connections.
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'';
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};
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https-port = mkOption {
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type = port;
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default = 443;
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example = 8443;
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description = ''
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On which port Keycloak should listen for new HTTPS connections.
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'';
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};
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http-relative-path = mkOption {
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type = str;
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default = "";
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example = "/auth";
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description = ''
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The path relative to <literal>/</literal> for serving
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resources.
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<note>
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<para>
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In versions of Keycloak using Wildfly (<17),
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this defaulted to <literal>/auth</literal>. If
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upgrading from the Wildfly version of Keycloak,
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i.e. a NixOS version before 22.05, you'll likely
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want to set this to <literal>/auth</literal> to
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keep compatibility with your clients.
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See <link
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xlink:href="https://www.keycloak.org/migration/migrating-to-quarkus"
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/> for more information on migrating from Wildfly
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to Quarkus.
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</para>
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</note>
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'';
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};
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hostname = mkOption {
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type = str;
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example = "keycloak.example.com";
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description = ''
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The hostname part of the public URL used as base for
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all frontend requests.
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See <link xlink:href="https://www.keycloak.org/server/hostname" />
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for more information about hostname configuration.
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'';
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};
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hostname-strict-backchannel = mkOption {
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type = bool;
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default = false;
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example = true;
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description = ''
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Whether Keycloak should force all requests to go
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through the frontend URL. By default, Keycloak allows
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backend requests to instead use its local hostname or
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IP address and may also advertise it to clients
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through its OpenID Connect Discovery endpoint.
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See <link xlink:href="https://www.keycloak.org/server/hostname" />
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for more information about hostname configuration.
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'';
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};
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proxy = mkOption {
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type = enum [ "edge" "reencrypt" "passthrough" "none" ];
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default = "none";
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example = "edge";
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description = ''
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The proxy address forwarding mode if the server is
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behind a reverse proxy.
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<variablelist>
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<varlistentry>
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<term>edge</term>
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<listitem>
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<para>
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Enables communication through HTTP between the
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proxy and Keycloak.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>reencrypt</term>
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<listitem>
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<para>
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Requires communication through HTTPS between the
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proxy and Keycloak.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>passthrough</term>
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<listitem>
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<para>
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Enables communication through HTTP or HTTPS between
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the proxy and Keycloak.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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See <link
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xlink:href="https://www.keycloak.org/server/reverseproxy"
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/> for more information.
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'';
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};
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};
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};
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example = literalExpression ''
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{
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hostname = "keycloak.example.com";
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proxy = "reencrypt";
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https-key-store-file = "/path/to/file";
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https-key-store-password = { _secret = "/run/keys/store_password"; };
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}
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'';
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description = ''
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Configuration options corresponding to parameters set in
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<filename>conf/keycloak.conf</filename>.
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Most available options are documented at <link
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xlink:href="https://www.keycloak.org/server/all-config" />.
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Options containing secret data should be set to an attribute
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set containing the attribute <literal>_secret</literal> - a
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string pointing to a file containing the value the option
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should be set to. See the example to get a better picture of
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this: in the resulting
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<filename>conf/keycloak.conf</filename> file, the
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<literal>https-key-store-password</literal> key will be set
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to the contents of the
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<filename>/run/keys/store_password</filename> file.
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'';
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};
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};
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config =
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let
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# We only want to create a database if we're actually going to
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# connect to it.
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databaseActuallyCreateLocally = cfg.database.createLocally && cfg.database.host == "localhost";
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createLocalPostgreSQL = databaseActuallyCreateLocally && cfg.database.type == "postgresql";
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createLocalMySQL = databaseActuallyCreateLocally && elem cfg.database.type [ "mysql" "mariadb" ];
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mySqlCaKeystore = pkgs.runCommand "mysql-ca-keystore" { } ''
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${pkgs.jre}/bin/keytool -importcert -trustcacerts -alias MySQLCACert -file ${cfg.database.caCert} -keystore $out -storepass notsosecretpassword -noprompt
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'';
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# Both theme and theme type directories need to be actual
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# directories in one hierarchy to pass Keycloak checks.
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themesBundle = pkgs.runCommand "keycloak-themes" { } ''
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linkTheme() {
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theme="$1"
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name="$2"
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mkdir "$out/$name"
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for typeDir in "$theme"/*; do
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if [ -d "$typeDir" ]; then
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type="$(basename "$typeDir")"
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mkdir "$out/$name/$type"
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for file in "$typeDir"/*; do
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ln -sn "$file" "$out/$name/$type/$(basename "$file")"
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done
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fi
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done
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}
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mkdir -p "$out"
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for theme in ${keycloakBuild}/themes/*; do
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if [ -d "$theme" ]; then
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linkTheme "$theme" "$(basename "$theme")"
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fi
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done
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${concatStringsSep "\n" (mapAttrsToList (name: theme: "linkTheme ${theme} ${escapeShellArg name}") cfg.themes)}
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'';
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keycloakConfig = lib.generators.toKeyValue {
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mkKeyValue = lib.flip lib.generators.mkKeyValueDefault "=" {
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mkValueString = v: with builtins;
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if isInt v then toString v
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else if isString v then v
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else if true == v then "true"
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else if false == v then "false"
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else if isSecret v then hashString "sha256" v._secret
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else throw "unsupported type ${typeOf v}: ${(lib.generators.toPretty {}) v}";
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};
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};
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isSecret = v: isAttrs v && v ? _secret && isString v._secret;
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filteredConfig = lib.converge (lib.filterAttrsRecursive (_: v: ! elem v [{ } null])) cfg.settings;
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confFile = pkgs.writeText "keycloak.conf" (keycloakConfig filteredConfig);
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keycloakBuild = cfg.package.override {
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inherit confFile;
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plugins = cfg.package.enabledPlugins ++ cfg.plugins;
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};
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in
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mkIf cfg.enable
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{
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assertions = [
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{
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assertion = (cfg.database.useSSL && cfg.database.type == "postgresql") -> (cfg.database.caCert != null);
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message = "A CA certificate must be specified (in 'services.keycloak.database.caCert') when PostgreSQL is used with SSL";
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}
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];
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environment.systemPackages = [ keycloakBuild ];
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services.keycloak.settings =
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let
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postgresParams = concatStringsSep "&" (
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optionals cfg.database.useSSL [
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"ssl=true"
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] ++ optionals (cfg.database.caCert != null) [
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"sslrootcert=${cfg.database.caCert}"
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"sslmode=verify-ca"
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]
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);
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mariadbParams = concatStringsSep "&" ([
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"characterEncoding=UTF-8"
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] ++ optionals cfg.database.useSSL [
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"useSSL=true"
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"requireSSL=true"
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"verifyServerCertificate=true"
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] ++ optionals (cfg.database.caCert != null) [
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"trustCertificateKeyStoreUrl=file:${mySqlCaKeystore}"
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"trustCertificateKeyStorePassword=notsosecretpassword"
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]);
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dbProps = if cfg.database.type == "postgresql" then postgresParams else mariadbParams;
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in
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mkMerge [
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{
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db = if cfg.database.type == "postgresql" then "postgres" else cfg.database.type;
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db-username = if databaseActuallyCreateLocally then "keycloak" else cfg.database.username;
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db-password._secret = cfg.database.passwordFile;
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db-url-host = "${cfg.database.host}:${toString cfg.database.port}";
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db-url-database = if databaseActuallyCreateLocally then "keycloak" else cfg.database.name;
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db-url-properties = prefixUnlessEmpty "?" dbProps;
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db-url = null;
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}
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(mkIf (cfg.sslCertificate != null && cfg.sslCertificateKey != null) {
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https-certificate-file = "/run/keycloak/ssl/ssl_cert";
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https-certificate-key-file = "/run/keycloak/ssl/ssl_key";
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})
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];
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systemd.services.keycloakPostgreSQLInit = mkIf createLocalPostgreSQL {
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after = [ "postgresql.service" ];
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before = [ "keycloak.service" ];
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bindsTo = [ "postgresql.service" ];
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path = [ config.services.postgresql.package ];
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serviceConfig = {
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Type = "oneshot";
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RemainAfterExit = true;
|
|
User = "postgres";
|
|
Group = "postgres";
|
|
LoadCredential = [ "db_password:${cfg.database.passwordFile}" ];
|
|
};
|
|
script = ''
|
|
set -o errexit -o pipefail -o nounset -o errtrace
|
|
shopt -s inherit_errexit
|
|
|
|
create_role="$(mktemp)"
|
|
trap 'rm -f "$create_role"' ERR EXIT
|
|
|
|
db_password="$(<"$CREDENTIALS_DIRECTORY/db_password")"
|
|
echo "CREATE ROLE keycloak WITH LOGIN PASSWORD '$db_password' CREATEDB" > "$create_role"
|
|
psql -tAc "SELECT 1 FROM pg_roles WHERE rolname='keycloak'" | grep -q 1 || psql -tA --file="$create_role"
|
|
psql -tAc "SELECT 1 FROM pg_database WHERE datname = 'keycloak'" | grep -q 1 || psql -tAc 'CREATE DATABASE "keycloak" OWNER "keycloak"'
|
|
'';
|
|
};
|
|
|
|
systemd.services.keycloakMySQLInit = mkIf createLocalMySQL {
|
|
after = [ "mysql.service" ];
|
|
before = [ "keycloak.service" ];
|
|
bindsTo = [ "mysql.service" ];
|
|
path = [ config.services.mysql.package ];
|
|
serviceConfig = {
|
|
Type = "oneshot";
|
|
RemainAfterExit = true;
|
|
User = config.services.mysql.user;
|
|
Group = config.services.mysql.group;
|
|
LoadCredential = [ "db_password:${cfg.database.passwordFile}" ];
|
|
};
|
|
script = ''
|
|
set -o errexit -o pipefail -o nounset -o errtrace
|
|
shopt -s inherit_errexit
|
|
db_password="$(<"$CREDENTIALS_DIRECTORY/db_password")"
|
|
( echo "CREATE USER IF NOT EXISTS 'keycloak'@'localhost' IDENTIFIED BY '$db_password';"
|
|
echo "CREATE DATABASE IF NOT EXISTS keycloak CHARACTER SET utf8 COLLATE utf8_unicode_ci;"
|
|
echo "GRANT ALL PRIVILEGES ON keycloak.* TO 'keycloak'@'localhost';"
|
|
) | mysql -N
|
|
'';
|
|
};
|
|
|
|
systemd.services.keycloak =
|
|
let
|
|
databaseServices =
|
|
if createLocalPostgreSQL then [
|
|
"keycloakPostgreSQLInit.service"
|
|
"postgresql.service"
|
|
]
|
|
else if createLocalMySQL then [
|
|
"keycloakMySQLInit.service"
|
|
"mysql.service"
|
|
]
|
|
else [ ];
|
|
secretPaths = catAttrs "_secret" (collect isSecret cfg.settings);
|
|
mkSecretReplacement = file: ''
|
|
replace-secret ${hashString "sha256" file} $CREDENTIALS_DIRECTORY/${baseNameOf file} /run/keycloak/conf/keycloak.conf
|
|
'';
|
|
secretReplacements = lib.concatMapStrings mkSecretReplacement secretPaths;
|
|
in
|
|
{
|
|
after = databaseServices;
|
|
bindsTo = databaseServices;
|
|
wantedBy = [ "multi-user.target" ];
|
|
path = with pkgs; [
|
|
keycloakBuild
|
|
openssl
|
|
replace-secret
|
|
];
|
|
environment = {
|
|
KC_HOME_DIR = "/run/keycloak";
|
|
KC_CONF_DIR = "/run/keycloak/conf";
|
|
};
|
|
serviceConfig = {
|
|
LoadCredential =
|
|
map (p: "${baseNameOf p}:${p}") secretPaths
|
|
++ optionals (cfg.sslCertificate != null && cfg.sslCertificateKey != null) [
|
|
"ssl_cert:${cfg.sslCertificate}"
|
|
"ssl_key:${cfg.sslCertificateKey}"
|
|
];
|
|
User = "keycloak";
|
|
Group = "keycloak";
|
|
DynamicUser = true;
|
|
RuntimeDirectory = "keycloak";
|
|
RuntimeDirectoryMode = 0700;
|
|
AmbientCapabilities = "CAP_NET_BIND_SERVICE";
|
|
};
|
|
script = ''
|
|
set -o errexit -o pipefail -o nounset -o errtrace
|
|
shopt -s inherit_errexit
|
|
|
|
umask u=rwx,g=,o=
|
|
|
|
ln -s ${themesBundle} /run/keycloak/themes
|
|
ln -s ${keycloakBuild}/providers /run/keycloak/
|
|
|
|
install -D -m 0600 ${confFile} /run/keycloak/conf/keycloak.conf
|
|
|
|
${secretReplacements}
|
|
|
|
'' + optionalString (cfg.sslCertificate != null && cfg.sslCertificateKey != null) ''
|
|
mkdir -p /run/keycloak/ssl
|
|
cp $CREDENTIALS_DIRECTORY/ssl_{cert,key} /run/keycloak/ssl/
|
|
'' + ''
|
|
export KEYCLOAK_ADMIN=admin
|
|
export KEYCLOAK_ADMIN_PASSWORD=${cfg.initialAdminPassword}
|
|
kc.sh start
|
|
'';
|
|
};
|
|
|
|
services.postgresql.enable = mkDefault createLocalPostgreSQL;
|
|
services.mysql.enable = mkDefault createLocalMySQL;
|
|
services.mysql.package =
|
|
let
|
|
dbPkg = if cfg.database.type == "mariadb" then pkgs.mariadb else pkgs.mysql80;
|
|
in
|
|
mkIf createLocalMySQL (mkDefault dbPkg);
|
|
};
|
|
|
|
meta.doc = ./keycloak.xml;
|
|
meta.maintainers = [ maintainers.talyz ];
|
|
}
|