cfed3b8b22
The NixOS 21.03 release has been delayed to 21.05. See NixOS/rfcs#80. There are two instances of 21.03 which have been left as is, since they are in stateVersion comparisons. This will ensure that existing user configurations which refer to 21.03 will continue to work.
492 lines
15 KiB
Nix
492 lines
15 KiB
Nix
{ options, config, lib, pkgs, ... }:
|
|
|
|
with lib;
|
|
|
|
let
|
|
cfg = config.services.dovecot2;
|
|
dovecotPkg = pkgs.dovecot;
|
|
|
|
baseDir = "/run/dovecot2";
|
|
stateDir = "/var/lib/dovecot";
|
|
|
|
dovecotConf = concatStrings [
|
|
''
|
|
base_dir = ${baseDir}
|
|
protocols = ${concatStringsSep " " cfg.protocols}
|
|
sendmail_path = /run/wrappers/bin/sendmail
|
|
# defining mail_plugins must be done before the first protocol {} filter because of https://doc.dovecot.org/configuration_manual/config_file/config_file_syntax/#variable-expansion
|
|
mail_plugins = $mail_plugins ${concatStringsSep " " cfg.mailPlugins.globally.enable}
|
|
''
|
|
|
|
(
|
|
concatStringsSep "\n" (
|
|
mapAttrsToList (
|
|
protocol: plugins: ''
|
|
protocol ${protocol} {
|
|
mail_plugins = $mail_plugins ${concatStringsSep " " plugins.enable}
|
|
}
|
|
''
|
|
) cfg.mailPlugins.perProtocol
|
|
)
|
|
)
|
|
|
|
(
|
|
if cfg.sslServerCert == null then ''
|
|
ssl = no
|
|
disable_plaintext_auth = no
|
|
'' else ''
|
|
ssl_cert = <${cfg.sslServerCert}
|
|
ssl_key = <${cfg.sslServerKey}
|
|
${optionalString (cfg.sslCACert != null) ("ssl_ca = <" + cfg.sslCACert)}
|
|
ssl_dh = <${config.security.dhparams.params.dovecot2.path}
|
|
disable_plaintext_auth = yes
|
|
''
|
|
)
|
|
|
|
''
|
|
default_internal_user = ${cfg.user}
|
|
default_internal_group = ${cfg.group}
|
|
${optionalString (cfg.mailUser != null) "mail_uid = ${cfg.mailUser}"}
|
|
${optionalString (cfg.mailGroup != null) "mail_gid = ${cfg.mailGroup}"}
|
|
|
|
mail_location = ${cfg.mailLocation}
|
|
|
|
maildir_copy_with_hardlinks = yes
|
|
pop3_uidl_format = %08Xv%08Xu
|
|
|
|
auth_mechanisms = plain login
|
|
|
|
service auth {
|
|
user = root
|
|
}
|
|
''
|
|
|
|
(
|
|
optionalString cfg.enablePAM ''
|
|
userdb {
|
|
driver = passwd
|
|
}
|
|
|
|
passdb {
|
|
driver = pam
|
|
args = ${optionalString cfg.showPAMFailure "failure_show_msg=yes"} dovecot2
|
|
}
|
|
''
|
|
)
|
|
|
|
(
|
|
optionalString (cfg.sieveScripts != {}) ''
|
|
plugin {
|
|
${concatStringsSep "\n" (mapAttrsToList (to: from: "sieve_${to} = ${stateDir}/sieve/${to}") cfg.sieveScripts)}
|
|
}
|
|
''
|
|
)
|
|
|
|
(
|
|
optionalString (cfg.mailboxes != {}) ''
|
|
namespace inbox {
|
|
inbox=yes
|
|
${concatStringsSep "\n" (map mailboxConfig (attrValues cfg.mailboxes))}
|
|
}
|
|
''
|
|
)
|
|
|
|
(
|
|
optionalString cfg.enableQuota ''
|
|
service quota-status {
|
|
executable = ${dovecotPkg}/libexec/dovecot/quota-status -p postfix
|
|
inet_listener {
|
|
port = ${cfg.quotaPort}
|
|
}
|
|
client_limit = 1
|
|
}
|
|
|
|
plugin {
|
|
quota_rule = *:storage=${cfg.quotaGlobalPerUser}
|
|
quota = maildir:User quota # per virtual mail user quota # BUG/FIXME broken, we couldn't get this working
|
|
quota_status_success = DUNNO
|
|
quota_status_nouser = DUNNO
|
|
quota_status_overquota = "552 5.2.2 Mailbox is full"
|
|
quota_grace = 10%%
|
|
}
|
|
''
|
|
)
|
|
|
|
cfg.extraConfig
|
|
];
|
|
|
|
modulesDir = pkgs.symlinkJoin {
|
|
name = "dovecot-modules";
|
|
paths = map (pkg: "${pkg}/lib/dovecot") ([ dovecotPkg ] ++ map (module: module.override { dovecot = dovecotPkg; }) cfg.modules);
|
|
};
|
|
|
|
mailboxConfig = mailbox: ''
|
|
mailbox "${mailbox.name}" {
|
|
auto = ${toString mailbox.auto}
|
|
'' + optionalString (mailbox.autoexpunge != null) ''
|
|
autoexpunge = ${mailbox.autoexpunge}
|
|
'' + optionalString (mailbox.specialUse != null) ''
|
|
special_use = \${toString mailbox.specialUse}
|
|
'' + "}";
|
|
|
|
mailboxes = { name, ... }: {
|
|
options = {
|
|
name = mkOption {
|
|
type = types.strMatching ''[^"]+'';
|
|
example = "Spam";
|
|
default = name;
|
|
readOnly = true;
|
|
description = "The name of the mailbox.";
|
|
};
|
|
auto = mkOption {
|
|
type = types.enum [ "no" "create" "subscribe" ];
|
|
default = "no";
|
|
example = "subscribe";
|
|
description = "Whether to automatically create or create and subscribe to the mailbox or not.";
|
|
};
|
|
specialUse = mkOption {
|
|
type = types.nullOr (types.enum [ "All" "Archive" "Drafts" "Flagged" "Junk" "Sent" "Trash" ]);
|
|
default = null;
|
|
example = "Junk";
|
|
description = "Null if no special use flag is set. Other than that every use flag mentioned in the RFC is valid.";
|
|
};
|
|
autoexpunge = mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
example = "60d";
|
|
description = ''
|
|
To automatically remove all email from the mailbox which is older than the
|
|
specified time.
|
|
'';
|
|
};
|
|
};
|
|
};
|
|
in
|
|
{
|
|
imports = [
|
|
(mkRemovedOptionModule [ "services" "dovecot2" "package" ] "")
|
|
];
|
|
|
|
options.services.dovecot2 = {
|
|
enable = mkEnableOption "Dovecot 2.x POP3/IMAP server";
|
|
|
|
enablePop3 = mkOption {
|
|
type = types.bool;
|
|
default = false;
|
|
description = "Start the POP3 listener (when Dovecot is enabled).";
|
|
};
|
|
|
|
enableImap = mkOption {
|
|
type = types.bool;
|
|
default = true;
|
|
description = "Start the IMAP listener (when Dovecot is enabled).";
|
|
};
|
|
|
|
enableLmtp = mkOption {
|
|
type = types.bool;
|
|
default = false;
|
|
description = "Start the LMTP listener (when Dovecot is enabled).";
|
|
};
|
|
|
|
protocols = mkOption {
|
|
type = types.listOf types.str;
|
|
default = [];
|
|
description = "Additional listeners to start when Dovecot is enabled.";
|
|
};
|
|
|
|
user = mkOption {
|
|
type = types.str;
|
|
default = "dovecot2";
|
|
description = "Dovecot user name.";
|
|
};
|
|
|
|
group = mkOption {
|
|
type = types.str;
|
|
default = "dovecot2";
|
|
description = "Dovecot group name.";
|
|
};
|
|
|
|
extraConfig = mkOption {
|
|
type = types.lines;
|
|
default = "";
|
|
example = "mail_debug = yes";
|
|
description = "Additional entries to put verbatim into Dovecot's config file.";
|
|
};
|
|
|
|
mailPlugins =
|
|
let
|
|
plugins = hint: types.submodule {
|
|
options = {
|
|
enable = mkOption {
|
|
type = types.listOf types.str;
|
|
default = [];
|
|
description = "mail plugins to enable as a list of strings to append to the ${hint} <literal>$mail_plugins</literal> configuration variable";
|
|
};
|
|
};
|
|
};
|
|
in
|
|
mkOption {
|
|
type = with types; submodule {
|
|
options = {
|
|
globally = mkOption {
|
|
description = "Additional entries to add to the mail_plugins variable for all protocols";
|
|
type = plugins "top-level";
|
|
example = { enable = [ "virtual" ]; };
|
|
default = { enable = []; };
|
|
};
|
|
perProtocol = mkOption {
|
|
description = "Additional entries to add to the mail_plugins variable, per protocol";
|
|
type = attrsOf (plugins "corresponding per-protocol");
|
|
default = {};
|
|
example = { imap = [ "imap_acl" ]; };
|
|
};
|
|
};
|
|
};
|
|
description = "Additional entries to add to the mail_plugins variable, globally and per protocol";
|
|
example = {
|
|
globally.enable = [ "acl" ];
|
|
perProtocol.imap.enable = [ "imap_acl" ];
|
|
};
|
|
default = { globally.enable = []; perProtocol = {}; };
|
|
};
|
|
|
|
configFile = mkOption {
|
|
type = types.nullOr types.path;
|
|
default = null;
|
|
description = "Config file used for the whole dovecot configuration.";
|
|
apply = v: if v != null then v else pkgs.writeText "dovecot.conf" dovecotConf;
|
|
};
|
|
|
|
mailLocation = mkOption {
|
|
type = types.str;
|
|
default = "maildir:/var/spool/mail/%u"; /* Same as inbox, as postfix */
|
|
example = "maildir:~/mail:INBOX=/var/spool/mail/%u";
|
|
description = ''
|
|
Location that dovecot will use for mail folders. Dovecot mail_location option.
|
|
'';
|
|
};
|
|
|
|
mailUser = mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
description = "Default user to store mail for virtual users.";
|
|
};
|
|
|
|
mailGroup = mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
description = "Default group to store mail for virtual users.";
|
|
};
|
|
|
|
createMailUser = mkOption {
|
|
type = types.bool;
|
|
default = true;
|
|
description = ''Whether to automatically create the user
|
|
given in <option>services.dovecot.user</option> and the group
|
|
given in <option>services.dovecot.group</option>.'';
|
|
};
|
|
|
|
modules = mkOption {
|
|
type = types.listOf types.package;
|
|
default = [];
|
|
example = literalExample "[ pkgs.dovecot_pigeonhole ]";
|
|
description = ''
|
|
Symlinks the contents of lib/dovecot of every given package into
|
|
/etc/dovecot/modules. This will make the given modules available
|
|
if a dovecot package with the module_dir patch applied is being used.
|
|
'';
|
|
};
|
|
|
|
sslCACert = mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
description = "Path to the server's CA certificate key.";
|
|
};
|
|
|
|
sslServerCert = mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
description = "Path to the server's public key.";
|
|
};
|
|
|
|
sslServerKey = mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
description = "Path to the server's private key.";
|
|
};
|
|
|
|
enablePAM = mkOption {
|
|
type = types.bool;
|
|
default = true;
|
|
description = "Whether to create a own Dovecot PAM service and configure PAM user logins.";
|
|
};
|
|
|
|
sieveScripts = mkOption {
|
|
type = types.attrsOf types.path;
|
|
default = {};
|
|
description = "Sieve scripts to be executed. Key is a sequence, e.g. 'before2', 'after' etc.";
|
|
};
|
|
|
|
showPAMFailure = mkOption {
|
|
type = types.bool;
|
|
default = false;
|
|
description = "Show the PAM failure message on authentication error (useful for OTPW).";
|
|
};
|
|
|
|
mailboxes = mkOption {
|
|
type = with types; coercedTo
|
|
(listOf unspecified)
|
|
(list: listToAttrs (map (entry: { name = entry.name; value = removeAttrs entry ["name"]; }) list))
|
|
(attrsOf (submodule mailboxes));
|
|
default = {};
|
|
example = literalExample ''
|
|
{
|
|
Spam = { specialUse = "Junk"; auto = "create"; };
|
|
}
|
|
'';
|
|
description = "Configure mailboxes and auto create or subscribe them.";
|
|
};
|
|
|
|
enableQuota = mkOption {
|
|
type = types.bool;
|
|
default = false;
|
|
example = true;
|
|
description = "Whether to enable the dovecot quota service.";
|
|
};
|
|
|
|
quotaPort = mkOption {
|
|
type = types.str;
|
|
default = "12340";
|
|
description = ''
|
|
The Port the dovecot quota service binds to.
|
|
If using postfix, add check_policy_service inet:localhost:12340 to your smtpd_recipient_restrictions in your postfix config.
|
|
'';
|
|
};
|
|
quotaGlobalPerUser = mkOption {
|
|
type = types.str;
|
|
default = "100G";
|
|
example = "10G";
|
|
description = "Quota limit for the user in bytes. Supports suffixes b, k, M, G, T and %.";
|
|
};
|
|
|
|
};
|
|
|
|
|
|
config = mkIf cfg.enable {
|
|
security.pam.services.dovecot2 = mkIf cfg.enablePAM {};
|
|
|
|
security.dhparams = mkIf (cfg.sslServerCert != null) {
|
|
enable = true;
|
|
params.dovecot2 = {};
|
|
};
|
|
services.dovecot2.protocols =
|
|
optional cfg.enableImap "imap"
|
|
++ optional cfg.enablePop3 "pop3"
|
|
++ optional cfg.enableLmtp "lmtp";
|
|
|
|
services.dovecot2.mailPlugins = mkIf cfg.enableQuota {
|
|
globally.enable = [ "quota" ];
|
|
perProtocol.imap.enable = [ "imap_quota" ];
|
|
};
|
|
|
|
users.users = {
|
|
dovenull =
|
|
{
|
|
uid = config.ids.uids.dovenull2;
|
|
description = "Dovecot user for untrusted logins";
|
|
group = "dovenull";
|
|
};
|
|
} // optionalAttrs (cfg.user == "dovecot2") {
|
|
dovecot2 =
|
|
{
|
|
uid = config.ids.uids.dovecot2;
|
|
description = "Dovecot user";
|
|
group = cfg.group;
|
|
};
|
|
} // optionalAttrs (cfg.createMailUser && cfg.mailUser != null) {
|
|
${cfg.mailUser} =
|
|
{ description = "Virtual Mail User"; } // optionalAttrs (cfg.mailGroup != null)
|
|
{ group = cfg.mailGroup; };
|
|
};
|
|
|
|
users.groups = {
|
|
dovenull.gid = config.ids.gids.dovenull2;
|
|
} // optionalAttrs (cfg.group == "dovecot2") {
|
|
dovecot2.gid = config.ids.gids.dovecot2;
|
|
} // optionalAttrs (cfg.createMailUser && cfg.mailGroup != null) {
|
|
${cfg.mailGroup} = {};
|
|
};
|
|
|
|
environment.etc."dovecot/modules".source = modulesDir;
|
|
environment.etc."dovecot/dovecot.conf".source = cfg.configFile;
|
|
|
|
systemd.services.dovecot2 = {
|
|
description = "Dovecot IMAP/POP3 server";
|
|
|
|
after = [ "network.target" ];
|
|
wantedBy = [ "multi-user.target" ];
|
|
restartTriggers = [ cfg.configFile modulesDir ];
|
|
|
|
startLimitIntervalSec = 60; # 1 min
|
|
serviceConfig = {
|
|
ExecStart = "${dovecotPkg}/sbin/dovecot -F";
|
|
ExecReload = "${dovecotPkg}/sbin/doveadm reload";
|
|
Restart = "on-failure";
|
|
RestartSec = "1s";
|
|
RuntimeDirectory = [ "dovecot2" ];
|
|
};
|
|
|
|
# When copying sieve scripts preserve the original time stamp
|
|
# (should be 0) so that the compiled sieve script is newer than
|
|
# the source file and Dovecot won't try to compile it.
|
|
preStart = ''
|
|
rm -rf ${stateDir}/sieve
|
|
'' + optionalString (cfg.sieveScripts != {}) ''
|
|
mkdir -p ${stateDir}/sieve
|
|
${concatStringsSep "\n" (
|
|
mapAttrsToList (
|
|
to: from: ''
|
|
if [ -d '${from}' ]; then
|
|
mkdir '${stateDir}/sieve/${to}'
|
|
cp -p "${from}/"*.sieve '${stateDir}/sieve/${to}'
|
|
else
|
|
cp -p '${from}' '${stateDir}/sieve/${to}'
|
|
fi
|
|
${pkgs.dovecot_pigeonhole}/bin/sievec '${stateDir}/sieve/${to}'
|
|
''
|
|
) cfg.sieveScripts
|
|
)}
|
|
chown -R '${cfg.mailUser}:${cfg.mailGroup}' '${stateDir}/sieve'
|
|
'';
|
|
};
|
|
|
|
environment.systemPackages = [ dovecotPkg ];
|
|
|
|
warnings = mkIf (any isList options.services.dovecot2.mailboxes.definitions) [
|
|
"Declaring `services.dovecot2.mailboxes' as a list is deprecated and will break eval in 21.05! See the release notes for more info for migration."
|
|
];
|
|
|
|
assertions = [
|
|
{
|
|
assertion = intersectLists cfg.protocols [ "pop3" "imap" ] != [];
|
|
message = "dovecot needs at least one of the IMAP or POP3 listeners enabled";
|
|
}
|
|
{
|
|
assertion = (cfg.sslServerCert == null) == (cfg.sslServerKey == null)
|
|
&& (cfg.sslCACert != null -> !(cfg.sslServerCert == null || cfg.sslServerKey == null));
|
|
message = "dovecot needs both sslServerCert and sslServerKey defined for working crypto";
|
|
}
|
|
{
|
|
assertion = cfg.showPAMFailure -> cfg.enablePAM;
|
|
message = "dovecot is configured with showPAMFailure while enablePAM is disabled";
|
|
}
|
|
{
|
|
assertion = cfg.sieveScripts != {} -> (cfg.mailUser != null && cfg.mailGroup != null);
|
|
message = "dovecot requires mailUser and mailGroup to be set when sieveScripts is set";
|
|
}
|
|
];
|
|
|
|
};
|
|
|
|
}
|