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|
{
lib,
pkgs,
config,
...
}:
let
inherit (lib)
mkIf
mkDefault
mapAttrs
mapAttrsToList
mergeAttrsList
imap1
foldr
foldlAttrs
optional
optionals
;
cfg = config.environment.fortify;
in
{
imports = [ ./options.nix ];
config = mkIf cfg.enable {
security.wrappers.fsu = {
source = "${cfg.package}/libexec/fsu";
setuid = true;
owner = "root";
setgid = true;
group = "root";
};
environment.etc = {
fsurc = {
mode = "0400";
text = foldlAttrs (
acc: username: fid:
"${toString config.users.users.${username}.uid} ${toString fid}\n" + acc
) "" cfg.users;
};
userdb.source = pkgs.runCommand "fortify-userdb" { } ''
${cfg.package}/libexec/fuserdb -o $out ${
foldlAttrs (
acc: username: fid:
acc + " ${username}:${toString fid}"
) "-s /run/current-system/sw/bin/nologin -d ${cfg.stateDir}" cfg.users
}
'';
};
services.userdbd.enable = mkDefault true;
home-manager =
let
privPackages = mapAttrs (username: fid: {
home.packages =
let
# aid 0 is reserved
wrappers = imap1 (
aid: app:
let
extendDBusDefault = id: ext: {
filter = true;
talk = [ "org.freedesktop.Notifications" ] ++ ext.talk;
own =
(optionals (app.id != null) [
"${id}.*"
"org.mpris.MediaPlayer2.${id}.*"
])
++ ext.own;
inherit (ext) call broadcast;
};
dbusConfig =
let
default = {
talk = [ ];
own = [ ];
call = { };
broadcast = { };
};
in
{
session_bus =
if app.dbus.session != null then
(app.dbus.session (extendDBusDefault app.id))
else
(extendDBusDefault app.id default);
system_bus = app.dbus.system;
};
command = if app.command == null then app.name else app.command;
script = if app.script == null then ("exec " + command + " $@") else app.script;
enablements =
with app.capability;
(if wayland then 1 else 0)
+ (if x11 then 2 else 0)
+ (if dbus then 4 else 0)
+ (if pulse then 8 else 0);
conf = {
inherit (app) id;
command = [
(pkgs.writeScript "${app.name}-start" ''
#!${pkgs.zsh}${pkgs.zsh.shellPath}
${script}
'')
];
confinement = {
app_id = aid;
inherit (app) groups;
username = "u${toString fid}_a${toString aid}";
home = "${cfg.stateDir}/u${toString fid}/a${toString aid}";
sandbox = {
inherit (app)
userns
net
dev
env
;
map_real_uid = app.mapRealUid;
no_new_session = app.tty;
filesystem =
[
{ src = "/bin"; }
{ src = "/usr/bin"; }
{ src = "/nix/store"; }
{ src = "/run/current-system"; }
{
src = "/sys/block";
require = false;
}
{
src = "/sys/bus";
require = false;
}
{
src = "/sys/class";
require = false;
}
{
src = "/sys/dev";
require = false;
}
{
src = "/sys/devices";
require = false;
}
]
++ optionals app.nix [
{ src = "/nix/var"; }
{ src = "/var/db/nix-channels"; }
]
++ optionals (if app.gpu != null then app.gpu else app.capability.wayland || app.capability.x11) [
{ src = "/run/opengl-driver"; }
{
src = "/dev/dri";
dev = true;
}
]
++ app.extraPaths;
auto_etc = true;
override = [ "/var/run/nscd" ];
};
inherit enablements;
inherit (dbusConfig) session_bus system_bus;
};
};
in
pkgs.writeShellScriptBin app.name ''
exec fortify app ${pkgs.writeText "fortify-${app.name}.json" (builtins.toJSON conf)} $@
''
) cfg.apps;
in
foldr (
app: acc:
let
pkg = if app.share != null then app.share else pkgs.${app.name};
copy = source: "[ -d '${source}' ] && cp -Lrv '${source}' $out/share || true";
in
optional (app.capability.wayland || app.capability.x11) (
pkgs.runCommand "${app.name}-share" { } ''
mkdir -p $out/share
${copy "${pkg}/share/applications"}
${copy "${pkg}/share/pixmaps"}
${copy "${pkg}/share/icons"}
${copy "${pkg}/share/man"}
substituteInPlace $out/share/applications/* \
--replace-warn '${pkg}/bin/' "" \
--replace-warn '${pkg}/libexec/' ""
''
)
++ acc
) (wrappers ++ [ cfg.package ]) cfg.apps;
}) cfg.users;
in
{
useUserPackages = false; # prevent users.users entries from being added
users = foldlAttrs (
acc: _: fid:
mergeAttrsList (
# aid 0 is reserved
imap1 (aid: app: {
"u${toString fid}_a${toString aid}" = app.extraConfig // {
home.packages = app.packages;
};
}) cfg.apps
)
// acc
) privPackages cfg.users;
};
};
}
|
