1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
Fortify
=======
[](https://pkg.go.dev/git.ophivana.moe/cat/fortify)
Lets you run graphical applications as another user ~~in an Android-like sandbox environment~~ (WIP) with a nice NixOS
module to configure target users and provide launchers and desktop files for your privileged user.
Why would you want this?
- It protects the desktop environment from applications.
- It protects applications from each other.
- It provides UID isolation on top of ~~the standard application sandbox~~ (WIP).
There are a few different things to set up for this to work:
- A set of users, each for a group of applications that should be allowed access to each other
- A tool to switch users, currently sudo and machinectl are supported.
- If you are running NixOS, the module in this repository can take care of launchers and desktop files in the privileged
user's environment, as well as packages and extra home-manager configuration for target users.
If you have a flakes-enabled nix environment, you can try out the tool by running:
```shell
nix run git+https://git.ophivana.moe/cat/fortify -- -h
```
## Module usage
The NixOS module currently requires home-manager and impermanence to function correctly.
To use the module, import it into your configuration with
```nix
{
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.05";
fortify = {
url = "git+https://git.ophivana.moe/cat/fortify";
# Optional but recommended to limit the size of your system closure.
inputs.nixpkgs.follows = "nixpkgs";
};
};
outputs = { self, nixpkgs, fortify, ... }:
{
nixosConfigurations.fortify = nixpkgs.lib.nixosSystem {
system = "x86_64-linux";
modules = [
fortify.nixosModules.fortify
];
};
};
}
```
This adds the `environment.fortify` option:
```nix
{ pkgs, ... }:
{
environment.fortify = {
enable = true;
user = "nixos";
shell = "zsh";
stateDir = "/var/lib/persist/module";
target = {
chronos = {
launchers = {
weechat.method = "sudo";
claws-mail.capability.pulse = false;
discord = {
command = "vesktop --ozone-platform-hint=wayland";
share = pkgs.vesktop;
};
chromium.dbus = {
configSystem = {
talk = [
"org.bluez"
"org.freedesktop.Avahi"
"org.freedesktop.UPower"
];
};
config = {
talk = [
"org.freedesktop.DBus"
"org.freedesktop.FileManager1"
"org.freedesktop.Notifications"
"org.freedesktop.ScreenSaver"
"org.freedesktop.secrets"
"org.kde.kwalletd5"
"org.kde.kwalletd6"
];
own = [
"org.chromium.Chromium.*"
"org.mpris.MediaPlayer2.org.chromium.Chromium.*"
"org.mpris.MediaPlayer2.chromium.*"
];
call = {
"org.freedesktop.portal.*" = "*";
};
broadcast = {
"org.freedesktop.portal.*" = "@/org/freedesktop/portal/*";
};
};
};
};
packages = with pkgs; [
weechat
claws-mail
vesktop
chromium
];
persistence.directories = [
".config/weechat"
".claws-mail"
".config/vesktop"
];
extraConfig = {
programs.looking-glass-client.enable = true;
};
};
};
};
}
```
* `enable` determines whether the module should be enabled or not. Useful when sharing configurations between graphical
and headless systems. Defaults to `false`.
* `user` specifies the privileged user with access to fortified applications.
* `shell` is the shell used to run the launch command, required for sourcing the home-manager environment.
* `stateDir` is the path to your persistent storage location. It is directly passed through to the impermanence module.
* `target` is an attribute set of submodules, where the attribute name is the username of the unprivileged target user.
The available options are:
* `packages`, the list of packages to make available in the target user's environment.
* `persistence`, user persistence attribute set passed to impermanence.
* `extraConfig`, extra home-manager configuration for the target user.
* `launchers`, attribute set where the attribute name is the name of the launcher.
The available options are:
* `command`, the command to run as the target user. Defaults to launcher name.
* `dbus.config`, D-Bus proxy custom configuration.
* `dbus.configSystem`, D-Bus system bus custom configuration, null to disable.
* `dbus.id`, D-Bus application id, has no effect if `dbus.config` is set.
* `dbus.mpris`, whether to enable MPRIS defaults, has no effect if `dbus.config` is set.
* `capability.wayland`, whether to share the Wayland socket.
* `capability.x11`, whether to share the X11 socket and allow connection.
* `capability.dbus`, whether to proxy D-Bus.
* `capability.pulse`, whether to share the PulseAudio socket and cookie.
* `share`, package containing desktop/icon files. Defaults to launcher name.
* `method`, the launch method for the sandboxed program, can be `"fortify"`, `"fortify-sudo"`, `"sudo"`.
|
