217 lines
8 KiB
Nix
217 lines
8 KiB
Nix
{ lib
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, stdenv
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, writeText
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, fetchurl
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, buildcatrust
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, blacklist ? []
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, extraCertificateFiles ? []
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, extraCertificateStrings ? []
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# Used by update.sh
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, nssOverride ? null
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# Used for tests only
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, runCommand
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, cacert
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, openssl
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}:
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let
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blocklist = writeText "cacert-blocklist.txt" (lib.concatStringsSep "\n" (blacklist ++ [
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# Mozilla does not trust new certificates issued by these CAs after 2022/11/30¹
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# in their products, but unfortunately we don't have such a fine-grained
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# solution for most system packages², so we decided to eject these.
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#
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# [1] https://groups.google.com/a/mozilla.org/g/dev-security-policy/c/oxX69KFvsm4/m/yLohoVqtCgAJ
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# [2] https://utcc.utoronto.ca/~cks/space/blog/linux/CARootStoreTrustProblem
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"TrustCor ECA-1"
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"TrustCor RootCert CA-1"
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"TrustCor RootCert CA-2"
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]));
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extraCertificatesBundle = writeText "cacert-extra-certificates-bundle.crt" (lib.concatStringsSep "\n\n" extraCertificateStrings);
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srcVersion = "3.90";
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version = if nssOverride != null then nssOverride.version else srcVersion;
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meta = with lib; {
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homepage = "https://curl.haxx.se/docs/caextract.html";
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description = "A bundle of X.509 certificates of public Certificate Authorities (CA)";
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platforms = platforms.all;
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maintainers = with maintainers; [ fpletz lukegb ];
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license = licenses.mpl20;
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};
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certdata = stdenv.mkDerivation {
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pname = "nss-cacert-certdata";
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inherit version;
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src = if nssOverride != null then nssOverride.src else fetchurl {
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url = "mirror://mozilla/security/nss/releases/NSS_${lib.replaceStrings ["."] ["_"] version}_RTM/src/nss-${version}.tar.gz";
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hash = "sha256-ms1lNMQdjq0Z/Kb8s//+0vnwnEN8PXn+5qTuZoqqk7Y=";
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};
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dontBuild = true;
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installPhase = ''
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runHook preInstall
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mkdir $out
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cp nss/lib/ckfw/builtins/certdata.txt $out
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runHook postInstall
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'';
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inherit meta;
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};
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in
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stdenv.mkDerivation rec {
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pname = "nss-cacert";
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inherit version;
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src = certdata;
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outputs = [ "out" "unbundled" "p11kit" ];
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nativeBuildInputs = [ buildcatrust ];
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buildPhase = ''
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mkdir unbundled
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buildcatrust \
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--certdata_input certdata.txt \
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--ca_bundle_input "${extraCertificatesBundle}" ${lib.escapeShellArgs (map (arg: "${arg}") extraCertificateFiles)} \
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--blocklist "${blocklist}" \
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--ca_bundle_output ca-bundle.crt \
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--ca_unpacked_output unbundled \
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--p11kit_output ca-bundle.trust.p11-kit
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'';
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installPhase = ''
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install -D -t "$out/etc/ssl/certs" ca-bundle.crt
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# install p11-kit specific output to p11kit output
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install -D -t "$p11kit/etc/ssl/trust-source" ca-bundle.trust.p11-kit
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# install individual certs in unbundled output
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install -D -t "$unbundled/etc/ssl/certs" unbundled/*.crt
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'';
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setupHook = ./setup-hook.sh;
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passthru = {
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updateScript = ./update.sh;
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tests = let
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isTrusted = ''
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isTrusted() {
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# isTrusted <unbundled-dir> <ca name> <ca sha256 fingerprint>
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for f in $1/etc/ssl/certs/*.crt; do
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if ! [[ -s "$f" ]]; then continue; fi
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fingerprint="$(openssl x509 -in "$f" -noout -fingerprint -sha256 | cut -f2 -d=)"
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if [[ "x$fingerprint" == "x$3" ]]; then
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# If the certificate is treated as rejected for TLS Web Server, then we consider it untrusted.
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if openssl x509 -in "$f" -noout -text | grep -q '^Rejected Uses:'; then
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if openssl x509 -in "$f" -noout -text | grep -A1 '^Rejected Uses:' | grep -q 'TLS Web Server'; then
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return 1
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fi
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fi
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return 0
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fi
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done
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return 1
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}
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'';
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in {
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# Test that building this derivation with a blacklist works, and that UTF-8 is supported.
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blacklist-utf8 = let
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blacklistCAToFingerprint = {
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# "blacklist" uses the CA name from the NSS bundle, but we check for presence using the SHA256 fingerprint.
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"CFCA EV ROOT" = "5C:C3:D7:8E:4E:1D:5E:45:54:7A:04:E6:87:3E:64:F9:0C:F9:53:6D:1C:CC:2E:F8:00:F3:55:C4:C5:FD:70:FD";
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"NetLock Arany (Class Gold) Főtanúsítvány" = "6C:61:DA:C3:A2:DE:F0:31:50:6B:E0:36:D2:A6:FE:40:19:94:FB:D1:3D:F9:C8:D4:66:59:92:74:C4:46:EC:98";
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};
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mapBlacklist = f: lib.concatStringsSep "\n" (lib.mapAttrsToList f blacklistCAToFingerprint);
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in runCommand "verify-the-cacert-filter-output" {
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cacert = cacert.unbundled;
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cacertWithExcludes = (cacert.override {
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blacklist = builtins.attrNames blacklistCAToFingerprint;
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}).unbundled;
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nativeBuildInputs = [ openssl ];
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} ''
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${isTrusted}
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# Ensure that each certificate is in the main "cacert".
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${mapBlacklist (caName: caFingerprint: ''
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isTrusted "$cacert" "${caName}" "${caFingerprint}" || ({
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echo "CA fingerprint ${caFingerprint} (${caName}) is missing from the CA bundle. Consider picking a different CA for the blacklist test." >&2
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exit 1
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})
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'')}
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# Ensure that each certificate is NOT in the "cacertWithExcludes".
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${mapBlacklist (caName: caFingerprint: ''
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isTrusted "$cacertWithExcludes" "${caName}" "${caFingerprint}" && ({
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echo "CA fingerprint ${caFingerprint} (${caName}) is present in the cacertWithExcludes bundle." >&2
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exit 1
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})
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'')}
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touch "$out"
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'';
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# Test that we can add additional certificates to the store, and have them be trusted.
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extra-certificates = let
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extraCertificateStr = ''
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-----BEGIN CERTIFICATE-----
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MIIB5DCCAWqgAwIBAgIUItvsAYEIdYDkOIo5sdDYMcUaNuIwCgYIKoZIzj0EAwIw
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KTEnMCUGA1UEAwweTml4T1MgY2FjZXJ0IGV4dHJhIGNlcnRpZmljYXRlMB4XDTIx
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MDYxMjE5MDQzMFoXDTIyMDYxMjE5MDQzMFowKTEnMCUGA1UEAwweTml4T1MgY2Fj
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ZXJ0IGV4dHJhIGNlcnRpZmljYXRlMHYwEAYHKoZIzj0CAQYFK4EEACIDYgAEuP8y
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lAm6ZyQt9v/P6gTlV/a9R+D61WjucW04kaegOhg8csiluimYodiSv0Pbgymu+Zxm
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A3Bz9QGmytaYTiJ16083rJkwwIhqoYl7kWsLzreSTaLz87KH+rdeol59+H0Oo1Mw
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UTAdBgNVHQ4EFgQUCxuHfvqI4YVU5M+A0+aKvd1LrdswHwYDVR0jBBgwFoAUCxuH
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fvqI4YVU5M+A0+aKvd1LrdswDwYDVR0TAQH/BAUwAwEB/zAKBggqhkjOPQQDAgNo
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ADBlAjEArgxgjdNmRlSEuai0dzlktmBEDZKy2Iiul+ttSoce9ohfEVYESwO602HW
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keVvI56vAjBCro3dc3m2TuktiKO6lQV56PUEyxko4H/sR5pnHlduCGRDlFzQKXf/
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pMMmtj7cVb8=
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-----END CERTIFICATE-----
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'';
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extraCertificateFile = ./test-cert-file.crt;
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extraCertificatesToFingerprint = {
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# String above
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"NixOS cacert extra certificate string" = "A3:20:D0:84:96:97:25:FF:98:B8:A9:6D:A3:7C:89:95:6E:7A:77:21:92:F3:33:E9:31:AF:5E:03:CE:A9:E5:EE";
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# File
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"NixOS cacert extra certificate file" = "88:B8:BE:A7:57:AC:F1:FE:D6:98:8B:50:E0:BD:0A:AE:88:C7:DF:70:26:E1:67:5E:F5:F6:91:27:FF:02:D4:A5";
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};
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mapExtra = f: lib.concatStringsSep "\n" (lib.mapAttrsToList f extraCertificatesToFingerprint);
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in runCommand "verify-the-cacert-extra-output" {
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cacert = cacert.unbundled;
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cacertWithExtras = (cacert.override {
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extraCertificateStrings = [ extraCertificateStr ];
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extraCertificateFiles = [ extraCertificateFile ];
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}).unbundled;
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nativeBuildInputs = [ openssl ];
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} ''
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${isTrusted}
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# Ensure that the extra certificate is not in the main "cacert".
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${mapExtra (extraName: extraFingerprint: ''
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isTrusted "$cacert" "${extraName}" "${extraFingerprint}" && ({
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echo "'extra' CA fingerprint ${extraFingerprint} (${extraName}) is present in the main CA bundle." >&2
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exit 1
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})
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'')}
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# Ensure that the extra certificates ARE in the "cacertWithExtras".
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${mapExtra (extraName: extraFingerprint: ''
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isTrusted "$cacertWithExtras" "${extraName}" "${extraFingerprint}" || ({
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echo "CA fingerprint ${extraFingerprint} (${extraName}) is not present in the cacertWithExtras bundle." >&2
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exit 1
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})
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'')}
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touch "$out"
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'';
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};
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};
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inherit meta;
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}
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