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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.security.pki;
cacertPackage = pkgs.cacert.override {
blacklist = cfg.caCertificateBlacklist;
extraCertificateFiles = cfg.certificateFiles;
extraCertificateStrings = cfg.certificates;
};
caBundleName = if cfg.useCompatibleBundle then "ca-no-trust-rules-bundle.crt" else "ca-bundle.crt";
caBundle = "${cacertPackage}/etc/ssl/certs/${caBundleName}";
in
{
options = {
security.pki.installCACerts = mkEnableOption "Add CA certificates to system" // {
default = true;
internal = true;
};
security.pki.useCompatibleBundle = mkEnableOption ''usage of a compatibility bundle.
Such a bundle consist exclusively of `BEGIN CERTIFICATE` and no `BEGIN TRUSTED CERTIFICATE`,
which is a OpenSSL specific PEM format.
It is known to be incompatible with certain software stacks.
Nevertheless, enabling this will strip all additional trust rules provided by the
certificates themselves, this can have security consequences depending on your usecases.
'';
security.pki.certificateFiles = mkOption {
type = types.listOf types.path;
default = [];
example = literalExpression ''[ "''${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt" ]'';
description = lib.mdDoc ''
A list of files containing trusted root certificates in PEM
format. These are concatenated to form
{file}`/etc/ssl/certs/ca-certificates.crt`, which is
used by many programs that use OpenSSL, such as
{command}`curl` and {command}`git`.
'';
};
security.pki.certificates = mkOption {
type = types.listOf types.str;
default = [];
example = literalExpression ''
[ '''
NixOS.org
=========
-----BEGIN CERTIFICATE-----
MIIGUDCCBTigAwIBAgIDD8KWMA0GCSqGSIb3DQEBBQUAMIGMMQswCQYDVQQGEwJJ
TDEWMBQGA1UEChMNU3RhcnRDb20gTHRkLjErMCkGA1UECxMiU2VjdXJlIERpZ2l0
...
-----END CERTIFICATE-----
'''
]
'';
description = lib.mdDoc ''
A list of trusted root certificates in PEM format.
'';
};
security.pki.caCertificateBlacklist = mkOption {
type = types.listOf types.str;
default = [];
example = [
"WoSign" "WoSign China"
"CA WoSign ECC Root"
"Certification Authority of WoSign G2"
];
description = lib.mdDoc ''
A list of blacklisted CA certificate names that won't be imported from
the Mozilla Trust Store into
{file}`/etc/ssl/certs/ca-certificates.crt`. Use the
names from that file.
'';
};
};
config = mkIf cfg.installCACerts {
# NixOS canonical location + Debian/Ubuntu/Arch/Gentoo compatibility.
environment.etc."ssl/certs/ca-certificates.crt".source = caBundle;
# Old NixOS compatibility.
environment.etc."ssl/certs/ca-bundle.crt".source = caBundle;
# CentOS/Fedora compatibility.
environment.etc."pki/tls/certs/ca-bundle.crt".source = caBundle;
# P11-Kit trust source.
environment.etc."ssl/trust-source".source = "${cacertPackage.p11kit}/etc/ssl/trust-source";
};
}
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