165 lines
3.6 KiB
Nix
165 lines
3.6 KiB
Nix
{ config, pkgs, ... }:
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with pkgs.lib;
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let
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cfg = config.services.dovecot2;
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dovecotConf =
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''
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base_dir = /var/run/dovecot2/
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protocols = ${optionalString cfg.enableImap "imap"} ${optionalString cfg.enablePop3 "pop3"}
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''
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+ (if cfg.sslServerCert!="" then
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''
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ssl_cert = <${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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ssl = no
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disable_plaintext_auth = no
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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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auth_mechanisms = plain login
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service auth {
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user = root
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}
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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 = dovecot2
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}
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pop3_uidl_format = %08Xv%08Xu
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'' + cfg.extraConfig;
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confFile = pkgs.writeText "dovecot.conf" dovecotConf;
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in
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{
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###### interface
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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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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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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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};
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};
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###### implementation
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config = mkIf config.services.dovecot2.enable {
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security.pam.services = [ { name = "dovecot2"; } ];
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users.extraUsers = [
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{ name = cfg.user;
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uid = config.ids.uids.dovecot2;
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description = "Dovecot user";
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group = cfg.group;
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}
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{ name = "dovenull";
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uid = config.ids.uids.dovenull2;
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description = "Dovecot user for untrusted logins";
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group = cfg.group;
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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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};
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jobs.dovecot2 =
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{ description = "Dovecot IMAP/POP3 server";
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startOn = "started networking";
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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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exec = "${pkgs.dovecot}/sbin/dovecot -F -c ${confFile}";
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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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};
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}
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