Merge pull request #11573 from hrdinka/refactor/dovecot
dovecot service: refactor module
This commit is contained in:
Peter Simons
commit
8f575eb0bf
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@ -3,137 +3,178 @@
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with lib;
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let
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cfg = config.services.dovecot2;
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dovecotPkg = cfg.package;
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dovecotConf =
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''
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base_dir = /var/run/dovecot2/
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baseDir = "/run/dovecot2";
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stateDir = "/var/lib/dovecot";
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protocols = ${optionalString cfg.enableImap "imap"} ${optionalString cfg.enablePop3 "pop3"} ${optionalString cfg.enableLmtp "lmtp"}
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protocols = concatStrings [
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(optionalString cfg.enableImap "imap")
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(optionalString cfg.enablePop3 "pop3")
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(optionalString cfg.enableLmtp "lmtp")
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];
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dovecotConf = concatStrings [
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''
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+ (if cfg.sslServerCert!="" then
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base_dir = ${baseDir}
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protocols = ${protocols}
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''
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ssl_cert = <${cfg.sslServerCert}
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ssl_key = <${cfg.sslServerKey}
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ssl_ca = <${cfg.sslCACert}
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disable_plaintext_auth = yes
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'' else ''
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(if isNull cfg.sslServerCert then ''
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ssl = no
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disable_plaintext_auth = no
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'' else ''
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ssl_cert = <${cfg.sslServerCert}
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ssl_key = <${cfg.sslServerKey}
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${optionalString (!(isNull cfg.sslCACert)) ("ssl_ca = <" + cfg.sslCACert)}
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disable_plaintext_auth = yes
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'')
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+ ''
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''
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default_internal_user = ${cfg.user}
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mail_location = ${cfg.mailLocation}
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maildir_copy_with_hardlinks = yes
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pop3_uidl_format = %08Xv%08Xu
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auth_mechanisms = plain login
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service auth {
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user = root
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}
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''
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(optionalString cfg.enablePAM ''
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userdb {
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driver = passwd
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}
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passdb {
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driver = pam
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args = ${optionalString cfg.showPAMFailure "failure_show_msg=yes"} dovecot2
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}
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'')
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pop3_uidl_format = %08Xv%08Xu
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'' + cfg.extraConfig;
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cfg.extraConfig
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];
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modulesDir = pkgs.symlinkJoin "dovecot-modules"
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(map (module: "${module}/lib/dovecot") cfg.modules);
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in
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{
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###### interface
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options.services.dovecot2 = {
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enable = mkEnableOption "Dovecot 2.x POP3/IMAP server";
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options = {
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services.dovecot2 = {
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enable = mkOption {
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default = false;
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description = "Whether to enable the Dovecot 2.x POP3/IMAP server.";
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};
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enablePop3 = mkOption {
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default = true;
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description = "Start the POP3 listener (when Dovecot is enabled).";
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};
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enableImap = mkOption {
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default = true;
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description = "Start the IMAP listener (when Dovecot is enabled).";
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};
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enableLmtp = mkOption {
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default = false;
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description = "Start the LMTP listener (when Dovecot is enabled).";
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};
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user = mkOption {
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default = "dovecot2";
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description = "Dovecot user name.";
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};
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group = mkOption {
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default = "dovecot2";
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description = "Dovecot group name.";
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};
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extraConfig = mkOption {
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default = "";
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example = "mail_debug = yes";
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description = "Additional entries to put verbatim into Dovecot's config file.";
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};
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configFile = mkOption {
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default = null;
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description = "Config file used for the whole dovecot configuration.";
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apply = v: if v != null then v else pkgs.writeText "dovecot.conf" dovecotConf;
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};
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mailLocation = mkOption {
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default = "maildir:/var/spool/mail/%u"; /* Same as inbox, as postfix */
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example = "maildir:~/mail:INBOX=/var/spool/mail/%u";
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description = ''
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Location that dovecot will use for mail folders. Dovecot mail_location option.
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'';
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};
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sslServerCert = mkOption {
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default = "";
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description = "Server certificate";
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};
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sslCACert = mkOption {
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default = "";
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description = "CA certificate used by the server certificate.";
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};
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sslServerKey = mkOption {
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default = "";
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description = "Server key.";
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};
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showPAMFailure = mkOption {
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default = false;
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description = "Show the PAM failure message on authentication error (useful for OTPW).";
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};
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enablePop3 = mkOption {
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type = types.bool;
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default = true;
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description = "Start the POP3 listener (when Dovecot is enabled).";
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};
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enableImap = mkOption {
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type = types.bool;
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default = true;
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description = "Start the IMAP listener (when Dovecot is enabled).";
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};
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enableLmtp = mkOption {
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type = types.bool;
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default = false;
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description = "Start the LMTP listener (when Dovecot is enabled).";
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};
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package = mkOption {
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type = types.package;
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default = pkgs.dovecot22;
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description = "Dovecot package to use.";
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};
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user = mkOption {
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type = types.str;
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default = "dovecot2";
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description = "Dovecot user name.";
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};
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group = mkOption {
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type = types.str;
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default = "dovecot2";
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description = "Dovecot group name.";
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};
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extraConfig = mkOption {
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type = types.str;
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default = "";
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example = "mail_debug = yes";
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description = "Additional entries to put verbatim into Dovecot's config file.";
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};
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configFile = mkOption {
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type = types.nullOr types.str;
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default = null;
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description = "Config file used for the whole dovecot configuration.";
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apply = v: if v != null then v else pkgs.writeText "dovecot.conf" dovecotConf;
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};
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mailLocation = mkOption {
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type = types.str;
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default = "maildir:/var/spool/mail/%u"; /* Same as inbox, as postfix */
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example = "maildir:~/mail:INBOX=/var/spool/mail/%u";
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description = ''
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Location that dovecot will use for mail folders. Dovecot mail_location option.
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'';
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};
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modules = mkOption {
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type = types.listOf types.package;
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default = [];
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example = [ pkgs.dovecot_pigeonhole ];
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description = ''
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Symlinks the contents of lib/dovecot of every given package into
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/var/lib/dovecot/modules. This will make the given modules available
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if a dovecot package with the module_dir patch applied (like
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pkgs.dovecot22, the default) is being used.
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'';
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};
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sslCACert = mkOption {
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type = types.nullOr types.str;
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default = null;
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description = "Path to the server's CA certificate key.";
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};
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sslServerCert = mkOption {
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type = types.nullOr types.str;
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default = null;
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description = "Path to the server's public key.";
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};
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sslServerKey = mkOption {
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type = types.nullOr types.str;
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default = null;
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description = "Path to the server's private key.";
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};
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enablePAM = mkOption {
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type = types.bool;
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default = true;
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description = "Wether to create a own Dovecot PAM service and configure PAM user logins.";
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};
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showPAMFailure = mkOption {
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type = types.bool;
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default = false;
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description = "Show the PAM failure message on authentication error (useful for OTPW).";
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};
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};
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###### implementation
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config = mkIf cfg.enable {
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config = mkIf config.services.dovecot2.enable {
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security.pam.services.dovecot2 = {};
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security.pam.services.dovecot2 = mkIf cfg.enablePAM {};
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users.extraUsers = [
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{ name = cfg.user;
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@ -148,36 +189,47 @@ in
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}
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];
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users.extraGroups = singleton
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{ name = cfg.group;
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gid = config.ids.gids.dovecot2;
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users.extraGroups = singleton {
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name = cfg.group;
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gid = config.ids.gids.dovecot2;
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};
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systemd.services.dovecot2 = {
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description = "Dovecot IMAP/POP3 server";
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after = [ "keys.target" "network.target" ];
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wants = [ "keys.target" ];
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wantedBy = [ "multi-user.target" ];
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preStart = ''
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mkdir -p "${baseDir}/login"
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chown -R ${cfg.user}:${cfg.group} "${baseDir}"
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rm -f "${stateDir}/modules"
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ln -s "${modulesDir}" "${stateDir}/modules"
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'';
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serviceConfig = {
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ExecStart = "${dovecotPkg}/sbin/dovecot -F -c ${cfg.configFile}";
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Restart = "on-failure";
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RestartSec = "1s";
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StartLimitInterval = "1min";
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};
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};
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systemd.services.dovecot2 =
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{ description = "Dovecot IMAP/POP3 server";
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environment.systemPackages = [ dovecotPkg ];
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after = [ "network.target" ];
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wantedBy = [ "multi-user.target" ];
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preStart =
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''
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${pkgs.coreutils}/bin/mkdir -p /var/run/dovecot2 /var/run/dovecot2/login
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${pkgs.coreutils}/bin/chown -R ${cfg.user}:${cfg.group} /var/run/dovecot2
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'';
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serviceConfig = {
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ExecStart = "${pkgs.dovecot}/sbin/dovecot -F -c ${cfg.configFile}";
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Restart = "on-failure";
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RestartSec = "1s";
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StartLimitInterval = "1min";
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};
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};
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environment.systemPackages = [ pkgs.dovecot ];
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assertions = [{ assertion = cfg.enablePop3 || cfg.enableImap;
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message = "dovecot needs at least one of the IMAP or POP3 listeners enabled";}];
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assertions = [
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{ assertion = cfg.enablePop3 || cfg.enableImap;
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message = "dovecot needs at least one of the IMAP or POP3 listeners enabled";
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}
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{ assertion = isNull cfg.sslServerCert == isNull cfg.sslServerKey
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&& (!(isNull cfg.sslCACert) -> !(isNull cfg.sslServerCert || isNull cfg.sslServerKey));
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message = "dovecot needs both sslServerCert and sslServerKey defined for working crypto";
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}
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{ assertion = cfg.showPAMFailure -> cfg.enablePAM;
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message = "dovecot is configured with showPAMFailure while enablePAM is disabled";
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}
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];
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};
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