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ssmtp: use the authPassFile option instead of authPass

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This gives users the option of storing the authPass outside the
world-readable Nix store.
This commit is contained in:
Bas van Dijk
2017-03-25 02:46:51 +01:00
parent 186cc512a6
commit 1d52c677be
4 changed files with 110 additions and 10 deletions
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41
nixos/modules/programs/ssmtp.nix
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@@ -95,9 +95,27 @@ in
example = "correctHorseBatteryStaple";
description = ''
Password used for SMTP auth. (STORED PLAIN TEXT, WORLD-READABLE IN NIX STORE)
It's recommended to use <option>authPassFile</option>
which takes precedence over <option>authPass</option>.
'';
};
authPassFile = mkOption {
type = types.nullOr types.str;
default = null;
example = "/run/keys/ssmtp-authpass";
description = ''
Path to a file that contains the password used for SMTP auth.
This file should be readable by the users that need to execute ssmtp.
<option>authPassFile</option> takes precedence over <option>authPass</option>.
Warning: when <option>authPass</option> is non-empty <option>authPassFile</option>
defaults to a file in the WORLD-READABLE Nix store containing that password.
'';
};
setSendmail = mkOption {
type = types.bool;
default = true;
@@ -111,21 +129,28 @@ in
config = mkIf cfg.directDelivery {
networking.defaultMailServer.authPassFile = mkIf (cfg.authPass != "")
(mkDefault (toString (pkgs.writeTextFile {
name = "ssmtp-authpass";
text = cfg.authPass;
})));
environment.etc."ssmtp/ssmtp.conf".text =
let yesNo = yes : if yes then "YES" else "NO"; in
''
MailHub=${cfg.hostName}
FromLineOverride=YES
${if cfg.root != "" then "root=${cfg.root}" else ""}
${if cfg.domain != "" then "rewriteDomain=${cfg.domain}" else ""}
UseTLS=${if cfg.useTLS then "YES" else "NO"}
UseSTARTTLS=${if cfg.useSTARTTLS then "YES" else "NO"}
${optionalString (cfg.root != "") "root=${cfg.root}"}
${optionalString (cfg.domain != "") "rewriteDomain=${cfg.domain}"}
UseTLS=${yesNo cfg.useTLS}
UseSTARTTLS=${yesNo cfg.useSTARTTLS}
#Debug=YES
${if cfg.authUser != "" then "AuthUser=${cfg.authUser}" else ""}
${if cfg.authPass != "" then "AuthPass=${cfg.authPass}" else ""}
${optionalString (cfg.authUser != "") "AuthUser=${cfg.authUser}"}
${optionalString (!isNull cfg.authPassFile) "AuthPassFile=${cfg.authPassFile}"}
'';
environment.systemPackages = [pkgs.ssmtp];
services.mail.sendmailSetuidWrapper = mkIf cfg.setSendmail {
program = "sendmail";
source = "${pkgs.ssmtp}/bin/sendmail";