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3 Commits
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Author SHA1 Message Date
Ophestra Umiker b291f0b710
app: add nixos-based config test case
test / test (push) Successful in 20s Details 
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
 2024-11-21 12:13:21 +09:00
Ophestra Umiker 3a20b149ce
update README document
test / test (push) Successful in 26s Details 
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
 2024-11-21 11:22:34 +09:00
Ophestra Umiker 30b8bce90a
fortify: zsh completion
test / test (push) Successful in 22s Details 
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
 2024-11-20 01:25:19 +09:00
7 changed files with 732 additions and 451 deletions
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1
README.md
View File

@ -97,7 +97,6 @@ This adds the `environment.fortify` option:
f:
f {
talk = [
"org.freedesktop.DBus"
"org.freedesktop.FileManager1"
"org.freedesktop.Notifications"
"org.freedesktop.ScreenSaver"

51
comp/_fortify Normal file
View File

@ -0,0 +1,51 @@
#compdef fortify
_fortify_app() {
_path_files -g "*.(json|ftfy)"
}
_fortify_run() {
_arguments \
'-a[Fortify application ID]: :_numbers' \
'-g[Groups inherited by the app process]: :_groups' \
'-d[Application home directory]: :_files -/' \
'-u[Passwd name within sandbox]: :_users' \
'--wayland[Share Wayland socket]' \
'-X[Share X11 socket and allow connection]' \
'--dbus[Proxy D-Bus connection]' \
'--pulse[Share PulseAudio socket and cookie]' \
'--dbus-config[Path to D-Bus proxy config file]: :_files -g "*.json"' \
'--dbus-system[Path to system D-Bus proxy config file]: :_files -g "*.json"' \
'--dbus-id[D-Bus ID of application, leave empty to disable own paths]:id' \
'--mpris[Allow owning MPRIS D-Bus path]' \
'--dbus-log[Force logging in the D-Bus proxy]'
}
(( $+functions[_fortify_commands] )) || _fortify_commands()
{
local -a _fortify_cmds
_fortify_cmds=(
"app:Launch app defined by the specified config file"
"run:Configure and start a permissive default sandbox"
"ps:List active apps and their state"
"version:Show fortify version"
"license:Show full license text"
"template:Produce a config template"
"help:Show help message"
)
if (( CURRENT == 1 )); then
_describe -t commands 'fortify command' _fortify_cmds || compadd "$@"
else
local curcontext="$curcontext"
cmd="${${_fortify_cmds[(r)$words[1]:*]%%:*}}"
if (( $+functions[_fortify_$cmd] )); then
_fortify_$cmd
else
_message "no more options"
fi
fi
}
_arguments -C \
'-v[Verbose output]' \
'*::fortify command:_fortify_commands'

522
internal/app/app_nixos_test.go
View File

@ -1,287 +1,87 @@
package app_test
import (
"fmt"
"io"
"io/fs"
"os/user"
"strconv"
"git.ophivana.moe/security/fortify/acl"
"git.ophivana.moe/security/fortify/dbus"
"git.ophivana.moe/security/fortify/helper/bwrap"
"git.ophivana.moe/security/fortify/internal/app"
"git.ophivana.moe/security/fortify/internal/linux"
"git.ophivana.moe/security/fortify/internal/system"
)
var testCasesNixos = []sealTestCase{
{
"nixos permissive defaults no enablements", new(stubNixOS),
&app.Config{
Command: make([]string, 0),
Confinement: app.ConfinementConfig{
AppID: 0,
Username: "chronos",
Outer: "/home/chronos",
},
},
app.ID{
0x4a, 0x45, 0x0b, 0x65,
0x96, 0xd7, 0xbc, 0x15,
0xbd, 0x01, 0x78, 0x0e,
0xb9, 0xa6, 0x07, 0xac,
},
system.New(1000000).
Ensure("/tmp/fortify.1971", 0711).
Ephemeral(system.Process, "/tmp/fortify.1971/4a450b6596d7bc15bd01780eb9a607ac", 0711).
Ensure("/tmp/fortify.1971/tmpdir", 0700).UpdatePermType(system.User, "/tmp/fortify.1971/tmpdir", acl.Execute).
Ensure("/tmp/fortify.1971/tmpdir/0", 01700).UpdatePermType(system.User, "/tmp/fortify.1971/tmpdir/0", acl.Read, acl.Write, acl.Execute).
Ensure("/run/user/1971/fortify", 0700).UpdatePermType(system.User, "/run/user/1971/fortify", acl.Execute).
Ensure("/run/user/1971", 0700).UpdatePermType(system.User, "/run/user/1971", acl.Execute). // this is ordered as is because the previous Ensure only calls mkdir if XDG_RUNTIME_DIR is unset
Ephemeral(system.Process, "/run/user/1971/fortify/4a450b6596d7bc15bd01780eb9a607ac", 0700).UpdatePermType(system.Process, "/run/user/1971/fortify/4a450b6596d7bc15bd01780eb9a607ac", acl.Execute).
WriteType(system.Process, "/tmp/fortify.1971/4a450b6596d7bc15bd01780eb9a607ac/passwd", "chronos:x:65534:65534:Fortify:/home/chronos:/run/current-system/sw/bin/zsh\n").
WriteType(system.Process, "/tmp/fortify.1971/4a450b6596d7bc15bd01780eb9a607ac/group", "fortify:x:65534:\n"),
(&bwrap.Config{
Net: true,
UserNS: true,
Clearenv: true,
Chdir: "/home/chronos",
SetEnv: map[string]string{
"HOME": "/home/chronos",
"SHELL": "/run/current-system/sw/bin/zsh",
"TERM": "xterm-256color",
"USER": "chronos",
"XDG_RUNTIME_DIR": "/run/user/65534",
"XDG_SESSION_CLASS": "user",
"XDG_SESSION_TYPE": "tty"},
Chmod: make(bwrap.ChmodConfig),
DieWithParent: true,
AsInit: true,
}).SetUID(65534).SetGID(65534).
Procfs("/proc").
Tmpfs("/fortify", 4096).
DevTmpfs("/dev").Mqueue("/dev/mqueue").
Bind("/bin", "/bin", false, true).
Bind("/boot", "/boot", false, true).
Bind("/home", "/home", false, true).
Bind("/lib", "/lib", false, true).
Bind("/lib64", "/lib64", false, true).
Bind("/nix", "/nix", false, true).
Bind("/root", "/root", false, true).
Bind("/srv", "/srv", false, true).
Bind("/sys", "/sys", false, true).
Bind("/usr", "/usr", false, true).
Bind("/var", "/var", false, true).
Bind("/run/agetty.reload", "/run/agetty.reload", false, true).
Bind("/run/binfmt", "/run/binfmt", false, true).
Bind("/run/booted-system", "/run/booted-system", false, true).
Bind("/run/credentials", "/run/credentials", false, true).
Bind("/run/cryptsetup", "/run/cryptsetup", false, true).
Bind("/run/current-system", "/run/current-system", false, true).
Bind("/run/host", "/run/host", false, true).
Bind("/run/keys", "/run/keys", false, true).
Bind("/run/libvirt", "/run/libvirt", false, true).
Bind("/run/libvirtd.pid", "/run/libvirtd.pid", false, true).
Bind("/run/lock", "/run/lock", false, true).
Bind("/run/log", "/run/log", false, true).
Bind("/run/lvm", "/run/lvm", false, true).
Bind("/run/mount", "/run/mount", false, true).
Bind("/run/NetworkManager", "/run/NetworkManager", false, true).
Bind("/run/nginx", "/run/nginx", false, true).
Bind("/run/nixos", "/run/nixos", false, true).
Bind("/run/nscd", "/run/nscd", false, true).
Bind("/run/opengl-driver", "/run/opengl-driver", false, true).
Bind("/run/pppd", "/run/pppd", false, true).
Bind("/run/resolvconf", "/run/resolvconf", false, true).
Bind("/run/sddm", "/run/sddm", false, true).
Bind("/run/store", "/run/store", false, true).
Bind("/run/syncoid", "/run/syncoid", false, true).
Bind("/run/system", "/run/system", false, true).
Bind("/run/systemd", "/run/systemd", false, true).
Bind("/run/tmpfiles.d", "/run/tmpfiles.d", false, true).
Bind("/run/udev", "/run/udev", false, true).
Bind("/run/udisks2", "/run/udisks2", false, true).
Bind("/run/utmp", "/run/utmp", false, true).
Bind("/run/virtlogd.pid", "/run/virtlogd.pid", false, true).
Bind("/run/wrappers", "/run/wrappers", false, true).
Bind("/run/zed.pid", "/run/zed.pid", false, true).
Bind("/run/zed.state", "/run/zed.state", false, true).
Bind("/etc", "/fortify/etc").
Symlink("/fortify/etc/alsa", "/etc/alsa").
Symlink("/fortify/etc/bashrc", "/etc/bashrc").
Symlink("/fortify/etc/binfmt.d", "/etc/binfmt.d").
Symlink("/fortify/etc/dbus-1", "/etc/dbus-1").
Symlink("/fortify/etc/default", "/etc/default").
Symlink("/fortify/etc/ethertypes", "/etc/ethertypes").
Symlink("/fortify/etc/fonts", "/etc/fonts").
Symlink("/fortify/etc/fstab", "/etc/fstab").
Symlink("/fortify/etc/fuse.conf", "/etc/fuse.conf").
Symlink("/fortify/etc/host.conf", "/etc/host.conf").
Symlink("/fortify/etc/hostid", "/etc/hostid").
Symlink("/fortify/etc/hostname", "/etc/hostname").
Symlink("/fortify/etc/hostname.CHECKSUM", "/etc/hostname.CHECKSUM").
Symlink("/fortify/etc/hosts", "/etc/hosts").
Symlink("/fortify/etc/inputrc", "/etc/inputrc").
Symlink("/fortify/etc/ipsec.d", "/etc/ipsec.d").
Symlink("/fortify/etc/issue", "/etc/issue").
Symlink("/fortify/etc/kbd", "/etc/kbd").
Symlink("/fortify/etc/libblockdev", "/etc/libblockdev").
Symlink("/fortify/etc/locale.conf", "/etc/locale.conf").
Symlink("/fortify/etc/localtime", "/etc/localtime").
Symlink("/fortify/etc/login.defs", "/etc/login.defs").
Symlink("/fortify/etc/lsb-release", "/etc/lsb-release").
Symlink("/fortify/etc/lvm", "/etc/lvm").
Symlink("/fortify/etc/machine-id", "/etc/machine-id").
Symlink("/fortify/etc/man_db.conf", "/etc/man_db.conf").
Symlink("/fortify/etc/modprobe.d", "/etc/modprobe.d").
Symlink("/fortify/etc/modules-load.d", "/etc/modules-load.d").
Symlink("/proc/mounts", "/etc/mtab").
Symlink("/fortify/etc/nanorc", "/etc/nanorc").
Symlink("/fortify/etc/netgroup", "/etc/netgroup").
Symlink("/fortify/etc/NetworkManager", "/etc/NetworkManager").
Symlink("/fortify/etc/nix", "/etc/nix").
Symlink("/fortify/etc/nixos", "/etc/nixos").
Symlink("/fortify/etc/NIXOS", "/etc/NIXOS").
Symlink("/fortify/etc/nscd.conf", "/etc/nscd.conf").
Symlink("/fortify/etc/nsswitch.conf", "/etc/nsswitch.conf").
Symlink("/fortify/etc/opensnitchd", "/etc/opensnitchd").
Symlink("/fortify/etc/os-release", "/etc/os-release").
Symlink("/fortify/etc/pam", "/etc/pam").
Symlink("/fortify/etc/pam.d", "/etc/pam.d").
Symlink("/fortify/etc/pipewire", "/etc/pipewire").
Symlink("/fortify/etc/pki", "/etc/pki").
Symlink("/fortify/etc/polkit-1", "/etc/polkit-1").
Symlink("/fortify/etc/profile", "/etc/profile").
Symlink("/fortify/etc/protocols", "/etc/protocols").
Symlink("/fortify/etc/qemu", "/etc/qemu").
Symlink("/fortify/etc/resolv.conf", "/etc/resolv.conf").
Symlink("/fortify/etc/resolvconf.conf", "/etc/resolvconf.conf").
Symlink("/fortify/etc/rpc", "/etc/rpc").
Symlink("/fortify/etc/samba", "/etc/samba").
Symlink("/fortify/etc/sddm.conf", "/etc/sddm.conf").
Symlink("/fortify/etc/secureboot", "/etc/secureboot").
Symlink("/fortify/etc/services", "/etc/services").
Symlink("/fortify/etc/set-environment", "/etc/set-environment").
Symlink("/fortify/etc/shadow", "/etc/shadow").
Symlink("/fortify/etc/shells", "/etc/shells").
Symlink("/fortify/etc/ssh", "/etc/ssh").
Symlink("/fortify/etc/ssl", "/etc/ssl").
Symlink("/fortify/etc/static", "/etc/static").
Symlink("/fortify/etc/subgid", "/etc/subgid").
Symlink("/fortify/etc/subuid", "/etc/subuid").
Symlink("/fortify/etc/sudoers", "/etc/sudoers").
Symlink("/fortify/etc/sysctl.d", "/etc/sysctl.d").
Symlink("/fortify/etc/systemd", "/etc/systemd").
Symlink("/fortify/etc/terminfo", "/etc/terminfo").
Symlink("/fortify/etc/tmpfiles.d", "/etc/tmpfiles.d").
Symlink("/fortify/etc/udev", "/etc/udev").
Symlink("/fortify/etc/udisks2", "/etc/udisks2").
Symlink("/fortify/etc/UPower", "/etc/UPower").
Symlink("/fortify/etc/vconsole.conf", "/etc/vconsole.conf").
Symlink("/fortify/etc/X11", "/etc/X11").
Symlink("/fortify/etc/zfs", "/etc/zfs").
Symlink("/fortify/etc/zinputrc", "/etc/zinputrc").
Symlink("/fortify/etc/zoneinfo", "/etc/zoneinfo").
Symlink("/fortify/etc/zprofile", "/etc/zprofile").
Symlink("/fortify/etc/zshenv", "/etc/zshenv").
Symlink("/fortify/etc/zshrc", "/etc/zshrc").
Bind("/tmp/fortify.1971/tmpdir/0", "/tmp", false, true).
Tmpfs("/tmp/fortify.1971", 1048576).
Tmpfs("/run/user", 1048576).
Tmpfs("/run/user/65534", 8388608).
Bind("/home/chronos", "/home/chronos", false, true).
Bind("/tmp/fortify.1971/4a450b6596d7bc15bd01780eb9a607ac/passwd", "/etc/passwd").
Bind("/tmp/fortify.1971/4a450b6596d7bc15bd01780eb9a607ac/group", "/etc/group").
Tmpfs("/var/run/nscd", 8192),
},
{
"nixos permissive defaults chromium", new(stubNixOS),
"nixos chromium", new(stubNixOS),
&app.Config{
ID: "org.chromium.Chromium",
Command: []string{"/run/current-system/sw/bin/zsh", "-c", "exec chromium "},
Command: []string{"/nix/store/yqivzpzzn7z5x0lq9hmbzygh45d8rhqd-chromium-start"},
Confinement: app.ConfinementConfig{
AppID: 9,
Groups: []string{"video"},
Username: "chronos",
Outer: "/home/chronos",
AppID: 1, Groups: []string{}, Username: "u0_a1",
Outer: "/var/lib/persist/module/fortify/0/1",
Sandbox: &app.SandboxConfig{
UserNS: true, Net: true, MapRealUID: true, Env: nil,
Filesystem: []*app.FilesystemConfig{
{Src: "/bin", Must: true}, {Src: "/usr/bin", Must: true},
{Src: "/nix/store", Must: true}, {Src: "/run/current-system", Must: true},
{Src: "/sys/block"}, {Src: "/sys/bus"}, {Src: "/sys/class"}, {Src: "/sys/dev"}, {Src: "/sys/devices"},
{Src: "/run/opengl-driver", Must: true}, {Src: "/dev/dri", Device: true},
}, AutoEtc: true,
Override: []string{"/var/run/nscd"},
},
SystemBus: &dbus.Config{
Talk: []string{"org.bluez", "org.freedesktop.Avahi", "org.freedesktop.UPower"},
Filter: true,
},
SessionBus: &dbus.Config{
Talk: []string{
"org.freedesktop.Notifications",
"org.freedesktop.FileManager1",
"org.freedesktop.ScreenSaver",
"org.freedesktop.secrets",
"org.kde.kwalletd5",
"org.kde.kwalletd6",
"org.gnome.SessionManager",
"org.freedesktop.FileManager1", "org.freedesktop.Notifications",
"org.freedesktop.ScreenSaver", "org.freedesktop.secrets",
"org.kde.kwalletd5", "org.kde.kwalletd6",
},
Own: []string{
"org.chromium.Chromium.*",
"org.mpris.MediaPlayer2.org.chromium.Chromium.*",
"org.mpris.MediaPlayer2.chromium.*",
},
Call: map[string]string{
"org.freedesktop.portal.*": "*",
},
Broadcast: map[string]string{
"org.freedesktop.portal.*": "@/org/freedesktop/portal/*",
},
Filter: true,
},
SystemBus: &dbus.Config{
Talk: []string{
"org.bluez",
"org.freedesktop.Avahi",
"org.freedesktop.UPower",
},
Call: map[string]string{}, Broadcast: map[string]string{},
Filter: true,
},
Enablements: system.EWayland.Mask() | system.EDBus.Mask() | system.EPulse.Mask(),
},
},
app.ID{
0xeb, 0xf0, 0x83, 0xd1,
0xb1, 0x75, 0x91, 0x17,
0x82, 0xd4, 0x13, 0x36,
0x9b, 0x64, 0xce, 0x7c,
0x8e, 0x2c, 0x76, 0xb0,
0x66, 0xda, 0xbe, 0x57,
0x4c, 0xf0, 0x73, 0xbd,
0xb4, 0x6e, 0xb5, 0xc1,
},
system.New(1000009).
system.New(1000001).
Ensure("/tmp/fortify.1971", 0711).
Ephemeral(system.Process, "/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c", 0711).
Ephemeral(system.Process, "/tmp/fortify.1971/8e2c76b066dabe574cf073bdb46eb5c1", 0711).
Ensure("/tmp/fortify.1971/tmpdir", 0700).UpdatePermType(system.User, "/tmp/fortify.1971/tmpdir", acl.Execute).
Ensure("/tmp/fortify.1971/tmpdir/9", 01700).UpdatePermType(system.User, "/tmp/fortify.1971/tmpdir/9", acl.Read, acl.Write, acl.Execute).
Ensure("/tmp/fortify.1971/tmpdir/1", 01700).UpdatePermType(system.User, "/tmp/fortify.1971/tmpdir/1", acl.Read, acl.Write, acl.Execute).
Ensure("/run/user/1971/fortify", 0700).UpdatePermType(system.User, "/run/user/1971/fortify", acl.Execute).
Ensure("/run/user/1971", 0700).UpdatePermType(system.User, "/run/user/1971", acl.Execute). // this is ordered as is because the previous Ensure only calls mkdir if XDG_RUNTIME_DIR is unset
Ephemeral(system.Process, "/run/user/1971/fortify/ebf083d1b175911782d413369b64ce7c", 0700).UpdatePermType(system.Process, "/run/user/1971/fortify/ebf083d1b175911782d413369b64ce7c", acl.Execute).
WriteType(system.Process, "/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/passwd", "chronos:x:65534:65534:Fortify:/home/chronos:/run/current-system/sw/bin/zsh\n").
WriteType(system.Process, "/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/group", "fortify:x:65534:\n").
Link("/run/user/1971/wayland-0", "/run/user/1971/fortify/ebf083d1b175911782d413369b64ce7c/wayland").
Ephemeral(system.Process, "/run/user/1971/fortify/8e2c76b066dabe574cf073bdb46eb5c1", 0700).UpdatePermType(system.Process, "/run/user/1971/fortify/8e2c76b066dabe574cf073bdb46eb5c1", acl.Execute).
WriteType(system.Process, "/tmp/fortify.1971/8e2c76b066dabe574cf073bdb46eb5c1/passwd", "u0_a1:x:1971:1971:Fortify:/var/lib/persist/module/fortify/0/1:/run/current-system/sw/bin/zsh\n").
WriteType(system.Process, "/tmp/fortify.1971/8e2c76b066dabe574cf073bdb46eb5c1/group", "fortify:x:1971:\n").
Link("/run/user/1971/wayland-0", "/run/user/1971/fortify/8e2c76b066dabe574cf073bdb46eb5c1/wayland").
UpdatePermType(system.EWayland, "/run/user/1971/wayland-0", acl.Read, acl.Write, acl.Execute).
Link("/run/user/1971/pulse/native", "/run/user/1971/fortify/ebf083d1b175911782d413369b64ce7c/pulse").
CopyFile("/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/pulse-cookie", "/home/ophestra/xdg/config/pulse/cookie").
MustProxyDBus("/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/bus", &dbus.Config{
Link("/run/user/1971/pulse/native", "/run/user/1971/fortify/8e2c76b066dabe574cf073bdb46eb5c1/pulse").
CopyFile("/tmp/fortify.1971/8e2c76b066dabe574cf073bdb46eb5c1/pulse-cookie", "/home/ophestra/xdg/config/pulse/cookie").
MustProxyDBus("/tmp/fortify.1971/8e2c76b066dabe574cf073bdb46eb5c1/bus", &dbus.Config{
Talk: []string{
"org.freedesktop.Notifications",
"org.freedesktop.FileManager1",
"org.freedesktop.ScreenSaver",
"org.freedesktop.secrets",
"org.kde.kwalletd5",
"org.kde.kwalletd6",
"org.gnome.SessionManager",
"org.freedesktop.FileManager1", "org.freedesktop.Notifications",
"org.freedesktop.ScreenSaver", "org.freedesktop.secrets",
"org.kde.kwalletd5", "org.kde.kwalletd6",
},
Own: []string{
"org.chromium.Chromium.*",
"org.mpris.MediaPlayer2.org.chromium.Chromium.*",
"org.mpris.MediaPlayer2.chromium.*",
},
Call: map[string]string{
"org.freedesktop.portal.*": "*",
},
Broadcast: map[string]string{
"org.freedesktop.portal.*": "@/org/freedesktop/portal/*",
},
Call: map[string]string{}, Broadcast: map[string]string{},
Filter: true,
}, "/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/system_bus_socket", &dbus.Config{
}, "/tmp/fortify.1971/8e2c76b066dabe574cf073bdb46eb5c1/system_bus_socket", &dbus.Config{
Talk: []string{
"org.bluez",
"org.freedesktop.Avahi",
@ -289,79 +89,45 @@ var testCasesNixos = []sealTestCase{
},
Filter: true,
}).
UpdatePerm("/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/bus", acl.Read, acl.Write).
UpdatePerm("/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/system_bus_socket", acl.Read, acl.Write),
UpdatePerm("/tmp/fortify.1971/8e2c76b066dabe574cf073bdb46eb5c1/bus", acl.Read, acl.Write).
UpdatePerm("/tmp/fortify.1971/8e2c76b066dabe574cf073bdb46eb5c1/system_bus_socket", acl.Read, acl.Write),
(&bwrap.Config{
Net: true,
UserNS: true,
Chdir: "/home/chronos",
Chdir: "/var/lib/persist/module/fortify/0/1",
Clearenv: true,
SetEnv: map[string]string{
"DBUS_SESSION_BUS_ADDRESS": "unix:path=/run/user/65534/bus",
"DBUS_SESSION_BUS_ADDRESS": "unix:path=/run/user/1971/bus",
"DBUS_SYSTEM_BUS_ADDRESS": "unix:path=/run/dbus/system_bus_socket",
"HOME": "/home/chronos",
"PULSE_COOKIE": "/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/pulse-cookie",
"PULSE_SERVER": "unix:/run/user/65534/pulse/native",
"HOME": "/var/lib/persist/module/fortify/0/1",
"PULSE_COOKIE": "/tmp/fortify.1971/8e2c76b066dabe574cf073bdb46eb5c1/pulse-cookie",
"PULSE_SERVER": "unix:/run/user/1971/pulse/native",
"SHELL": "/run/current-system/sw/bin/zsh",
"TERM": "xterm-256color",
"USER": "chronos",
"WAYLAND_DISPLAY": "/run/user/65534/wayland-0",
"XDG_RUNTIME_DIR": "/run/user/65534",
"USER": "u0_a1",
"WAYLAND_DISPLAY": "/run/user/1971/wayland-0",
"XDG_RUNTIME_DIR": "/run/user/1971",
"XDG_SESSION_CLASS": "user",
"XDG_SESSION_TYPE": "tty",
},
Chmod: make(bwrap.ChmodConfig),
NewSession: true,
DieWithParent: true,
AsInit: true,
}).SetUID(65534).SetGID(65534).
}).SetUID(1971).SetGID(1971).
Procfs("/proc").
Tmpfs("/fortify", 4096).
DevTmpfs("/dev").Mqueue("/dev/mqueue").
Bind("/bin", "/bin", false, true).
Bind("/boot", "/boot", false, true).
Bind("/home", "/home", false, true).
Bind("/lib", "/lib", false, true).
Bind("/lib64", "/lib64", false, true).
Bind("/nix", "/nix", false, true).
Bind("/root", "/root", false, true).
Bind("/srv", "/srv", false, true).
Bind("/sys", "/sys", false, true).
Bind("/usr", "/usr", false, true).
Bind("/var", "/var", false, true).
Bind("/run/agetty.reload", "/run/agetty.reload", false, true).
Bind("/run/binfmt", "/run/binfmt", false, true).
Bind("/run/booted-system", "/run/booted-system", false, true).
Bind("/run/credentials", "/run/credentials", false, true).
Bind("/run/cryptsetup", "/run/cryptsetup", false, true).
Bind("/run/current-system", "/run/current-system", false, true).
Bind("/run/host", "/run/host", false, true).
Bind("/run/keys", "/run/keys", false, true).
Bind("/run/libvirt", "/run/libvirt", false, true).
Bind("/run/libvirtd.pid", "/run/libvirtd.pid", false, true).
Bind("/run/lock", "/run/lock", false, true).
Bind("/run/log", "/run/log", false, true).
Bind("/run/lvm", "/run/lvm", false, true).
Bind("/run/mount", "/run/mount", false, true).
Bind("/run/NetworkManager", "/run/NetworkManager", false, true).
Bind("/run/nginx", "/run/nginx", false, true).
Bind("/run/nixos", "/run/nixos", false, true).
Bind("/run/nscd", "/run/nscd", false, true).
Bind("/run/opengl-driver", "/run/opengl-driver", false, true).
Bind("/run/pppd", "/run/pppd", false, true).
Bind("/run/resolvconf", "/run/resolvconf", false, true).
Bind("/run/sddm", "/run/sddm", false, true).
Bind("/run/store", "/run/store", false, true).
Bind("/run/syncoid", "/run/syncoid", false, true).
Bind("/run/system", "/run/system", false, true).
Bind("/run/systemd", "/run/systemd", false, true).
Bind("/run/tmpfiles.d", "/run/tmpfiles.d", false, true).
Bind("/run/udev", "/run/udev", false, true).
Bind("/run/udisks2", "/run/udisks2", false, true).
Bind("/run/utmp", "/run/utmp", false, true).
Bind("/run/virtlogd.pid", "/run/virtlogd.pid", false, true).
Bind("/run/wrappers", "/run/wrappers", false, true).
Bind("/run/zed.pid", "/run/zed.pid", false, true).
Bind("/run/zed.state", "/run/zed.state", false, true).
Bind("/bin", "/bin").
Bind("/usr/bin", "/usr/bin").
Bind("/nix/store", "/nix/store").
Bind("/run/current-system", "/run/current-system").
Bind("/sys/block", "/sys/block", true).
Bind("/sys/bus", "/sys/bus", true).
Bind("/sys/class", "/sys/class", true).
Bind("/sys/dev", "/sys/dev", true).
Bind("/sys/devices", "/sys/devices", true).
Bind("/run/opengl-driver", "/run/opengl-driver").
Bind("/dev/dri", "/dev/dri", true, true, true).
Bind("/etc", "/fortify/etc").
Symlink("/fortify/etc/alsa", "/etc/alsa").
@ -442,160 +208,18 @@ var testCasesNixos = []sealTestCase{
Symlink("/fortify/etc/zprofile", "/etc/zprofile").
Symlink("/fortify/etc/zshenv", "/etc/zshenv").
Symlink("/fortify/etc/zshrc", "/etc/zshrc").
Bind("/tmp/fortify.1971/tmpdir/9", "/tmp", false, true).
Bind("/tmp/fortify.1971/tmpdir/1", "/tmp", false, true).
Tmpfs("/tmp/fortify.1971", 1048576).
Tmpfs("/run/user", 1048576).
Tmpfs("/run/user/65534", 8388608).
Bind("/home/chronos", "/home/chronos", false, true).
Bind("/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/passwd", "/etc/passwd").
Bind("/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/group", "/etc/group").
Bind("/run/user/1971/fortify/ebf083d1b175911782d413369b64ce7c/wayland", "/run/user/65534/wayland-0").
Bind("/run/user/1971/fortify/ebf083d1b175911782d413369b64ce7c/pulse", "/run/user/65534/pulse/native").
Bind("/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/pulse-cookie", "/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/pulse-cookie").
Bind("/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/bus", "/run/user/65534/bus").
Bind("/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/system_bus_socket", "/run/dbus/system_bus_socket").
Tmpfs("/run/user/1971", 8388608).
Bind("/var/lib/persist/module/fortify/0/1", "/var/lib/persist/module/fortify/0/1", false, true).
Bind("/tmp/fortify.1971/8e2c76b066dabe574cf073bdb46eb5c1/passwd", "/etc/passwd").
Bind("/tmp/fortify.1971/8e2c76b066dabe574cf073bdb46eb5c1/group", "/etc/group").
Bind("/run/user/1971/fortify/8e2c76b066dabe574cf073bdb46eb5c1/wayland", "/run/user/1971/wayland-0").
Bind("/run/user/1971/fortify/8e2c76b066dabe574cf073bdb46eb5c1/pulse", "/run/user/1971/pulse/native").
Bind("/tmp/fortify.1971/8e2c76b066dabe574cf073bdb46eb5c1/pulse-cookie", "/tmp/fortify.1971/8e2c76b066dabe574cf073bdb46eb5c1/pulse-cookie").
Bind("/tmp/fortify.1971/8e2c76b066dabe574cf073bdb46eb5c1/bus", "/run/user/1971/bus").
Bind("/tmp/fortify.1971/8e2c76b066dabe574cf073bdb46eb5c1/system_bus_socket", "/run/dbus/system_bus_socket").
Tmpfs("/var/run/nscd", 8192),
},
}
// fs methods are not implemented using a real FS
// to help better understand filesystem access behaviour
type stubNixOS struct {
lookPathErr map[string]error
usernameErr map[string]error
}
func (s *stubNixOS) Geteuid() int {
return 1971
}
func (s *stubNixOS) LookupEnv(key string) (string, bool) {
switch key {
case "SHELL":
return "/run/current-system/sw/bin/zsh", true
case "TERM":
return "xterm-256color", true
case "WAYLAND_DISPLAY":
return "wayland-0", true
case "PULSE_COOKIE":
return "", false
case "HOME":
return "/home/ophestra", true
case "XDG_CONFIG_HOME":
return "/home/ophestra/xdg/config", true
default:
panic(fmt.Sprintf("attempted to access unexpected environment variable %q", key))
}
}
func (s *stubNixOS) TempDir() string {
return "/tmp"
}
func (s *stubNixOS) LookPath(file string) (string, error) {
if s.lookPathErr != nil {
if err, ok := s.lookPathErr[file]; ok {
return "", err
}
}
switch file {
case "sudo":
return "/run/wrappers/bin/sudo", nil
case "machinectl":
return "/home/ophestra/.nix-profile/bin/machinectl", nil
default:
panic(fmt.Sprintf("attempted to look up unexpected executable %q", file))
}
}
func (s *stubNixOS) Executable() (string, error) {
return "/home/ophestra/.nix-profile/bin/fortify", nil
}
func (s *stubNixOS) LookupGroup(name string) (*user.Group, error) {
switch name {
case "video":
return &user.Group{Gid: "26", Name: "video"}, nil
default:
return nil, user.UnknownGroupError(name)
}
}
func (s *stubNixOS) ReadDir(name string) ([]fs.DirEntry, error) {
switch name {
case "/":
return stubDirEntries("bin", "boot", "dev", "etc", "home", "lib",
"lib64", "nix", "proc", "root", "run", "srv", "sys", "tmp", "usr", "var")
case "/run":
return stubDirEntries("agetty.reload", "binfmt", "booted-system",
"credentials", "cryptsetup", "current-system", "dbus", "host", "keys",
"libvirt", "libvirtd.pid", "lock", "log", "lvm", "mount", "NetworkManager",
"nginx", "nixos", "nscd", "opengl-driver", "pppd", "resolvconf", "sddm",
"store", "syncoid", "system", "systemd", "tmpfiles.d", "udev", "udisks2",
"user", "utmp", "virtlogd.pid", "wrappers", "zed.pid", "zed.state")
case "/etc":
return stubDirEntries("alsa", "bashrc", "binfmt.d", "dbus-1", "default",
"ethertypes", "fonts", "fstab", "fuse.conf", "group", "host.conf", "hostid",
"hostname", "hostname.CHECKSUM", "hosts", "inputrc", "ipsec.d", "issue", "kbd",
"libblockdev", "locale.conf", "localtime", "login.defs", "lsb-release", "lvm",
"machine-id", "man_db.conf", "modprobe.d", "modules-load.d", "mtab", "nanorc",
"netgroup", "NetworkManager", "nix", "nixos", "NIXOS", "nscd.conf", "nsswitch.conf",
"opensnitchd", "os-release", "pam", "pam.d", "passwd", "pipewire", "pki", "polkit-1",
"profile", "protocols", "qemu", "resolv.conf", "resolvconf.conf", "rpc", "samba",
"sddm.conf", "secureboot", "services", "set-environment", "shadow", "shells", "ssh",
"ssl", "static", "subgid", "subuid", "sudoers", "sysctl.d", "systemd", "terminfo",
"tmpfiles.d", "udev", "udisks2", "UPower", "vconsole.conf", "X11", "zfs", "zinputrc",
"zoneinfo", "zprofile", "zshenv", "zshrc")
default:
panic(fmt.Sprintf("attempted to read unexpected directory %q", name))
}
}
func (s *stubNixOS) Stat(name string) (fs.FileInfo, error) {
switch name {
case "/var/run/nscd":
return nil, nil
case "/run/user/1971/pulse":
return nil, nil
case "/run/user/1971/pulse/native":
return stubFileInfoMode(0666), nil
case "/home/ophestra/.pulse-cookie":
return stubFileInfoIsDir(true), nil
case "/home/ophestra/xdg/config/pulse/cookie":
return stubFileInfoIsDir(false), nil
default:
panic(fmt.Sprintf("attempted to stat unexpected path %q", name))
}
}
func (s *stubNixOS) Open(name string) (fs.File, error) {
switch name {
default:
panic(fmt.Sprintf("attempted to open unexpected file %q", name))
}
}
func (s *stubNixOS) Exit(code int) {
panic("called exit on stub with code " + strconv.Itoa(code))
}
func (s *stubNixOS) Stdout() io.Writer {
panic("requested stdout")
}
func (s *stubNixOS) Paths() linux.Paths {
return linux.Paths{
SharePath: "/tmp/fortify.1971",
RuntimePath: "/run/user/1971",
RunDirPath: "/run/user/1971/fortify",
}
}
func (s *stubNixOS) Uid(aid int) (int, error) {
return 1000000 + 0*10000 + aid, nil
}
func (s *stubNixOS) SdBooted() bool {
return true
}

452
internal/app/app_pd_test.go Normal file
View File

@ -0,0 +1,452 @@
package app_test
import (
"git.ophivana.moe/security/fortify/acl"
"git.ophivana.moe/security/fortify/dbus"
"git.ophivana.moe/security/fortify/helper/bwrap"
"git.ophivana.moe/security/fortify/internal/app"
"git.ophivana.moe/security/fortify/internal/system"
)
var testCasesPd = []sealTestCase{
{
"nixos permissive defaults no enablements", new(stubNixOS),
&app.Config{
Command: make([]string, 0),
Confinement: app.ConfinementConfig{
AppID: 0,
Username: "chronos",
Outer: "/home/chronos",
},
},
app.ID{
0x4a, 0x45, 0x0b, 0x65,
0x96, 0xd7, 0xbc, 0x15,
0xbd, 0x01, 0x78, 0x0e,
0xb9, 0xa6, 0x07, 0xac,
},
system.New(1000000).
Ensure("/tmp/fortify.1971", 0711).
Ephemeral(system.Process, "/tmp/fortify.1971/4a450b6596d7bc15bd01780eb9a607ac", 0711).
Ensure("/tmp/fortify.1971/tmpdir", 0700).UpdatePermType(system.User, "/tmp/fortify.1971/tmpdir", acl.Execute).
Ensure("/tmp/fortify.1971/tmpdir/0", 01700).UpdatePermType(system.User, "/tmp/fortify.1971/tmpdir/0", acl.Read, acl.Write, acl.Execute).
Ensure("/run/user/1971/fortify", 0700).UpdatePermType(system.User, "/run/user/1971/fortify", acl.Execute).
Ensure("/run/user/1971", 0700).UpdatePermType(system.User, "/run/user/1971", acl.Execute). // this is ordered as is because the previous Ensure only calls mkdir if XDG_RUNTIME_DIR is unset
Ephemeral(system.Process, "/run/user/1971/fortify/4a450b6596d7bc15bd01780eb9a607ac", 0700).UpdatePermType(system.Process, "/run/user/1971/fortify/4a450b6596d7bc15bd01780eb9a607ac", acl.Execute).
WriteType(system.Process, "/tmp/fortify.1971/4a450b6596d7bc15bd01780eb9a607ac/passwd", "chronos:x:65534:65534:Fortify:/home/chronos:/run/current-system/sw/bin/zsh\n").
WriteType(system.Process, "/tmp/fortify.1971/4a450b6596d7bc15bd01780eb9a607ac/group", "fortify:x:65534:\n"),
(&bwrap.Config{
Net: true,
UserNS: true,
Clearenv: true,
Chdir: "/home/chronos",
SetEnv: map[string]string{
"HOME": "/home/chronos",
"SHELL": "/run/current-system/sw/bin/zsh",
"TERM": "xterm-256color",
"USER": "chronos",
"XDG_RUNTIME_DIR": "/run/user/65534",
"XDG_SESSION_CLASS": "user",
"XDG_SESSION_TYPE": "tty"},
Chmod: make(bwrap.ChmodConfig),
DieWithParent: true,
AsInit: true,
}).SetUID(65534).SetGID(65534).
Procfs("/proc").
Tmpfs("/fortify", 4096).
DevTmpfs("/dev").Mqueue("/dev/mqueue").
Bind("/bin", "/bin", false, true).
Bind("/boot", "/boot", false, true).
Bind("/home", "/home", false, true).
Bind("/lib", "/lib", false, true).
Bind("/lib64", "/lib64", false, true).
Bind("/nix", "/nix", false, true).
Bind("/root", "/root", false, true).
Bind("/srv", "/srv", false, true).
Bind("/sys", "/sys", false, true).
Bind("/usr", "/usr", false, true).
Bind("/var", "/var", false, true).
Bind("/run/agetty.reload", "/run/agetty.reload", false, true).
Bind("/run/binfmt", "/run/binfmt", false, true).
Bind("/run/booted-system", "/run/booted-system", false, true).
Bind("/run/credentials", "/run/credentials", false, true).
Bind("/run/cryptsetup", "/run/cryptsetup", false, true).
Bind("/run/current-system", "/run/current-system", false, true).
Bind("/run/host", "/run/host", false, true).
Bind("/run/keys", "/run/keys", false, true).
Bind("/run/libvirt", "/run/libvirt", false, true).
Bind("/run/libvirtd.pid", "/run/libvirtd.pid", false, true).
Bind("/run/lock", "/run/lock", false, true).
Bind("/run/log", "/run/log", false, true).
Bind("/run/lvm", "/run/lvm", false, true).
Bind("/run/mount", "/run/mount", false, true).
Bind("/run/NetworkManager", "/run/NetworkManager", false, true).
Bind("/run/nginx", "/run/nginx", false, true).
Bind("/run/nixos", "/run/nixos", false, true).
Bind("/run/nscd", "/run/nscd", false, true).
Bind("/run/opengl-driver", "/run/opengl-driver", false, true).
Bind("/run/pppd", "/run/pppd", false, true).
Bind("/run/resolvconf", "/run/resolvconf", false, true).
Bind("/run/sddm", "/run/sddm", false, true).
Bind("/run/store", "/run/store", false, true).
Bind("/run/syncoid", "/run/syncoid", false, true).
Bind("/run/system", "/run/system", false, true).
Bind("/run/systemd", "/run/systemd", false, true).
Bind("/run/tmpfiles.d", "/run/tmpfiles.d", false, true).
Bind("/run/udev", "/run/udev", false, true).
Bind("/run/udisks2", "/run/udisks2", false, true).
Bind("/run/utmp", "/run/utmp", false, true).
Bind("/run/virtlogd.pid", "/run/virtlogd.pid", false, true).
Bind("/run/wrappers", "/run/wrappers", false, true).
Bind("/run/zed.pid", "/run/zed.pid", false, true).
Bind("/run/zed.state", "/run/zed.state", false, true).
Bind("/etc", "/fortify/etc").
Symlink("/fortify/etc/alsa", "/etc/alsa").
Symlink("/fortify/etc/bashrc", "/etc/bashrc").
Symlink("/fortify/etc/binfmt.d", "/etc/binfmt.d").
Symlink("/fortify/etc/dbus-1", "/etc/dbus-1").
Symlink("/fortify/etc/default", "/etc/default").
Symlink("/fortify/etc/ethertypes", "/etc/ethertypes").
Symlink("/fortify/etc/fonts", "/etc/fonts").
Symlink("/fortify/etc/fstab", "/etc/fstab").
Symlink("/fortify/etc/fuse.conf", "/etc/fuse.conf").
Symlink("/fortify/etc/host.conf", "/etc/host.conf").
Symlink("/fortify/etc/hostid", "/etc/hostid").
Symlink("/fortify/etc/hostname", "/etc/hostname").
Symlink("/fortify/etc/hostname.CHECKSUM", "/etc/hostname.CHECKSUM").
Symlink("/fortify/etc/hosts", "/etc/hosts").
Symlink("/fortify/etc/inputrc", "/etc/inputrc").
Symlink("/fortify/etc/ipsec.d", "/etc/ipsec.d").
Symlink("/fortify/etc/issue", "/etc/issue").
Symlink("/fortify/etc/kbd", "/etc/kbd").
Symlink("/fortify/etc/libblockdev", "/etc/libblockdev").
Symlink("/fortify/etc/locale.conf", "/etc/locale.conf").
Symlink("/fortify/etc/localtime", "/etc/localtime").
Symlink("/fortify/etc/login.defs", "/etc/login.defs").
Symlink("/fortify/etc/lsb-release", "/etc/lsb-release").
Symlink("/fortify/etc/lvm", "/etc/lvm").
Symlink("/fortify/etc/machine-id", "/etc/machine-id").
Symlink("/fortify/etc/man_db.conf", "/etc/man_db.conf").
Symlink("/fortify/etc/modprobe.d", "/etc/modprobe.d").
Symlink("/fortify/etc/modules-load.d", "/etc/modules-load.d").
Symlink("/proc/mounts", "/etc/mtab").
Symlink("/fortify/etc/nanorc", "/etc/nanorc").
Symlink("/fortify/etc/netgroup", "/etc/netgroup").
Symlink("/fortify/etc/NetworkManager", "/etc/NetworkManager").
Symlink("/fortify/etc/nix", "/etc/nix").
Symlink("/fortify/etc/nixos", "/etc/nixos").
Symlink("/fortify/etc/NIXOS", "/etc/NIXOS").
Symlink("/fortify/etc/nscd.conf", "/etc/nscd.conf").
Symlink("/fortify/etc/nsswitch.conf", "/etc/nsswitch.conf").
Symlink("/fortify/etc/opensnitchd", "/etc/opensnitchd").
Symlink("/fortify/etc/os-release", "/etc/os-release").
Symlink("/fortify/etc/pam", "/etc/pam").
Symlink("/fortify/etc/pam.d", "/etc/pam.d").
Symlink("/fortify/etc/pipewire", "/etc/pipewire").
Symlink("/fortify/etc/pki", "/etc/pki").
Symlink("/fortify/etc/polkit-1", "/etc/polkit-1").
Symlink("/fortify/etc/profile", "/etc/profile").
Symlink("/fortify/etc/protocols", "/etc/protocols").
Symlink("/fortify/etc/qemu", "/etc/qemu").
Symlink("/fortify/etc/resolv.conf", "/etc/resolv.conf").
Symlink("/fortify/etc/resolvconf.conf", "/etc/resolvconf.conf").
Symlink("/fortify/etc/rpc", "/etc/rpc").
Symlink("/fortify/etc/samba", "/etc/samba").
Symlink("/fortify/etc/sddm.conf", "/etc/sddm.conf").
Symlink("/fortify/etc/secureboot", "/etc/secureboot").
Symlink("/fortify/etc/services", "/etc/services").
Symlink("/fortify/etc/set-environment", "/etc/set-environment").
Symlink("/fortify/etc/shadow", "/etc/shadow").
Symlink("/fortify/etc/shells", "/etc/shells").
Symlink("/fortify/etc/ssh", "/etc/ssh").
Symlink("/fortify/etc/ssl", "/etc/ssl").
Symlink("/fortify/etc/static", "/etc/static").
Symlink("/fortify/etc/subgid", "/etc/subgid").
Symlink("/fortify/etc/subuid", "/etc/subuid").
Symlink("/fortify/etc/sudoers", "/etc/sudoers").
Symlink("/fortify/etc/sysctl.d", "/etc/sysctl.d").
Symlink("/fortify/etc/systemd", "/etc/systemd").
Symlink("/fortify/etc/terminfo", "/etc/terminfo").
Symlink("/fortify/etc/tmpfiles.d", "/etc/tmpfiles.d").
Symlink("/fortify/etc/udev", "/etc/udev").
Symlink("/fortify/etc/udisks2", "/etc/udisks2").
Symlink("/fortify/etc/UPower", "/etc/UPower").
Symlink("/fortify/etc/vconsole.conf", "/etc/vconsole.conf").
Symlink("/fortify/etc/X11", "/etc/X11").
Symlink("/fortify/etc/zfs", "/etc/zfs").
Symlink("/fortify/etc/zinputrc", "/etc/zinputrc").
Symlink("/fortify/etc/zoneinfo", "/etc/zoneinfo").
Symlink("/fortify/etc/zprofile", "/etc/zprofile").
Symlink("/fortify/etc/zshenv", "/etc/zshenv").
Symlink("/fortify/etc/zshrc", "/etc/zshrc").
Bind("/tmp/fortify.1971/tmpdir/0", "/tmp", false, true).
Tmpfs("/tmp/fortify.1971", 1048576).
Tmpfs("/run/user", 1048576).
Tmpfs("/run/user/65534", 8388608).
Bind("/home/chronos", "/home/chronos", false, true).
Bind("/tmp/fortify.1971/4a450b6596d7bc15bd01780eb9a607ac/passwd", "/etc/passwd").
Bind("/tmp/fortify.1971/4a450b6596d7bc15bd01780eb9a607ac/group", "/etc/group").
Tmpfs("/var/run/nscd", 8192),
},
{
"nixos permissive defaults chromium", new(stubNixOS),
&app.Config{
ID: "org.chromium.Chromium",
Command: []string{"/run/current-system/sw/bin/zsh", "-c", "exec chromium "},
Confinement: app.ConfinementConfig{
AppID: 9,
Groups: []string{"video"},
Username: "chronos",
Outer: "/home/chronos",
SessionBus: &dbus.Config{
Talk: []string{
"org.freedesktop.Notifications",
"org.freedesktop.FileManager1",
"org.freedesktop.ScreenSaver",
"org.freedesktop.secrets",
"org.kde.kwalletd5",
"org.kde.kwalletd6",
"org.gnome.SessionManager",
},
Own: []string{
"org.chromium.Chromium.*",
"org.mpris.MediaPlayer2.org.chromium.Chromium.*",
"org.mpris.MediaPlayer2.chromium.*",
},
Call: map[string]string{
"org.freedesktop.portal.*": "*",
},
Broadcast: map[string]string{
"org.freedesktop.portal.*": "@/org/freedesktop/portal/*",
},
Filter: true,
},
SystemBus: &dbus.Config{
Talk: []string{
"org.bluez",
"org.freedesktop.Avahi",
"org.freedesktop.UPower",
},
Filter: true,
},
Enablements: system.EWayland.Mask() | system.EDBus.Mask() | system.EPulse.Mask(),
},
},
app.ID{
0xeb, 0xf0, 0x83, 0xd1,
0xb1, 0x75, 0x91, 0x17,
0x82, 0xd4, 0x13, 0x36,
0x9b, 0x64, 0xce, 0x7c,
},
system.New(1000009).
Ensure("/tmp/fortify.1971", 0711).
Ephemeral(system.Process, "/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c", 0711).
Ensure("/tmp/fortify.1971/tmpdir", 0700).UpdatePermType(system.User, "/tmp/fortify.1971/tmpdir", acl.Execute).
Ensure("/tmp/fortify.1971/tmpdir/9", 01700).UpdatePermType(system.User, "/tmp/fortify.1971/tmpdir/9", acl.Read, acl.Write, acl.Execute).
Ensure("/run/user/1971/fortify", 0700).UpdatePermType(system.User, "/run/user/1971/fortify", acl.Execute).
Ensure("/run/user/1971", 0700).UpdatePermType(system.User, "/run/user/1971", acl.Execute). // this is ordered as is because the previous Ensure only calls mkdir if XDG_RUNTIME_DIR is unset
Ephemeral(system.Process, "/run/user/1971/fortify/ebf083d1b175911782d413369b64ce7c", 0700).UpdatePermType(system.Process, "/run/user/1971/fortify/ebf083d1b175911782d413369b64ce7c", acl.Execute).
WriteType(system.Process, "/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/passwd", "chronos:x:65534:65534:Fortify:/home/chronos:/run/current-system/sw/bin/zsh\n").
WriteType(system.Process, "/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/group", "fortify:x:65534:\n").
Link("/run/user/1971/wayland-0", "/run/user/1971/fortify/ebf083d1b175911782d413369b64ce7c/wayland").
UpdatePermType(system.EWayland, "/run/user/1971/wayland-0", acl.Read, acl.Write, acl.Execute).
Link("/run/user/1971/pulse/native", "/run/user/1971/fortify/ebf083d1b175911782d413369b64ce7c/pulse").
CopyFile("/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/pulse-cookie", "/home/ophestra/xdg/config/pulse/cookie").
MustProxyDBus("/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/bus", &dbus.Config{
Talk: []string{
"org.freedesktop.Notifications",
"org.freedesktop.FileManager1",
"org.freedesktop.ScreenSaver",
"org.freedesktop.secrets",
"org.kde.kwalletd5",
"org.kde.kwalletd6",
"org.gnome.SessionManager",
},
Own: []string{
"org.chromium.Chromium.*",
"org.mpris.MediaPlayer2.org.chromium.Chromium.*",
"org.mpris.MediaPlayer2.chromium.*",
},
Call: map[string]string{
"org.freedesktop.portal.*": "*",
},
Broadcast: map[string]string{
"org.freedesktop.portal.*": "@/org/freedesktop/portal/*",
},
Filter: true,
}, "/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/system_bus_socket", &dbus.Config{
Talk: []string{
"org.bluez",
"org.freedesktop.Avahi",
"org.freedesktop.UPower",
},
Filter: true,
}).
UpdatePerm("/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/bus", acl.Read, acl.Write).
UpdatePerm("/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/system_bus_socket", acl.Read, acl.Write),
(&bwrap.Config{
Net: true,
UserNS: true,
Chdir: "/home/chronos",
Clearenv: true,
SetEnv: map[string]string{
"DBUS_SESSION_BUS_ADDRESS": "unix:path=/run/user/65534/bus",
"DBUS_SYSTEM_BUS_ADDRESS": "unix:path=/run/dbus/system_bus_socket",
"HOME": "/home/chronos",
"PULSE_COOKIE": "/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/pulse-cookie",
"PULSE_SERVER": "unix:/run/user/65534/pulse/native",
"SHELL": "/run/current-system/sw/bin/zsh",
"TERM": "xterm-256color",
"USER": "chronos",
"WAYLAND_DISPLAY": "/run/user/65534/wayland-0",
"XDG_RUNTIME_DIR": "/run/user/65534",
"XDG_SESSION_CLASS": "user",
"XDG_SESSION_TYPE": "tty",
},
Chmod: make(bwrap.ChmodConfig),
DieWithParent: true,
AsInit: true,
}).SetUID(65534).SetGID(65534).
Procfs("/proc").
Tmpfs("/fortify", 4096).
DevTmpfs("/dev").Mqueue("/dev/mqueue").
Bind("/bin", "/bin", false, true).
Bind("/boot", "/boot", false, true).
Bind("/home", "/home", false, true).
Bind("/lib", "/lib", false, true).
Bind("/lib64", "/lib64", false, true).
Bind("/nix", "/nix", false, true).
Bind("/root", "/root", false, true).
Bind("/srv", "/srv", false, true).
Bind("/sys", "/sys", false, true).
Bind("/usr", "/usr", false, true).
Bind("/var", "/var", false, true).
Bind("/run/agetty.reload", "/run/agetty.reload", false, true).
Bind("/run/binfmt", "/run/binfmt", false, true).
Bind("/run/booted-system", "/run/booted-system", false, true).
Bind("/run/credentials", "/run/credentials", false, true).
Bind("/run/cryptsetup", "/run/cryptsetup", false, true).
Bind("/run/current-system", "/run/current-system", false, true).
Bind("/run/host", "/run/host", false, true).
Bind("/run/keys", "/run/keys", false, true).
Bind("/run/libvirt", "/run/libvirt", false, true).
Bind("/run/libvirtd.pid", "/run/libvirtd.pid", false, true).
Bind("/run/lock", "/run/lock", false, true).
Bind("/run/log", "/run/log", false, true).
Bind("/run/lvm", "/run/lvm", false, true).
Bind("/run/mount", "/run/mount", false, true).
Bind("/run/NetworkManager", "/run/NetworkManager", false, true).
Bind("/run/nginx", "/run/nginx", false, true).
Bind("/run/nixos", "/run/nixos", false, true).
Bind("/run/nscd", "/run/nscd", false, true).
Bind("/run/opengl-driver", "/run/opengl-driver", false, true).
Bind("/run/pppd", "/run/pppd", false, true).
Bind("/run/resolvconf", "/run/resolvconf", false, true).
Bind("/run/sddm", "/run/sddm", false, true).
Bind("/run/store", "/run/store", false, true).
Bind("/run/syncoid", "/run/syncoid", false, true).
Bind("/run/system", "/run/system", false, true).
Bind("/run/systemd", "/run/systemd", false, true).
Bind("/run/tmpfiles.d", "/run/tmpfiles.d", false, true).
Bind("/run/udev", "/run/udev", false, true).
Bind("/run/udisks2", "/run/udisks2", false, true).
Bind("/run/utmp", "/run/utmp", false, true).
Bind("/run/virtlogd.pid", "/run/virtlogd.pid", false, true).
Bind("/run/wrappers", "/run/wrappers", false, true).
Bind("/run/zed.pid", "/run/zed.pid", false, true).
Bind("/run/zed.state", "/run/zed.state", false, true).
Bind("/dev/dri", "/dev/dri", true, true, true).
Bind("/etc", "/fortify/etc").
Symlink("/fortify/etc/alsa", "/etc/alsa").
Symlink("/fortify/etc/bashrc", "/etc/bashrc").
Symlink("/fortify/etc/binfmt.d", "/etc/binfmt.d").
Symlink("/fortify/etc/dbus-1", "/etc/dbus-1").
Symlink("/fortify/etc/default", "/etc/default").
Symlink("/fortify/etc/ethertypes", "/etc/ethertypes").
Symlink("/fortify/etc/fonts", "/etc/fonts").
Symlink("/fortify/etc/fstab", "/etc/fstab").
Symlink("/fortify/etc/fuse.conf", "/etc/fuse.conf").
Symlink("/fortify/etc/host.conf", "/etc/host.conf").
Symlink("/fortify/etc/hostid", "/etc/hostid").
Symlink("/fortify/etc/hostname", "/etc/hostname").
Symlink("/fortify/etc/hostname.CHECKSUM", "/etc/hostname.CHECKSUM").
Symlink("/fortify/etc/hosts", "/etc/hosts").
Symlink("/fortify/etc/inputrc", "/etc/inputrc").
Symlink("/fortify/etc/ipsec.d", "/etc/ipsec.d").
Symlink("/fortify/etc/issue", "/etc/issue").
Symlink("/fortify/etc/kbd", "/etc/kbd").
Symlink("/fortify/etc/libblockdev", "/etc/libblockdev").
Symlink("/fortify/etc/locale.conf", "/etc/locale.conf").
Symlink("/fortify/etc/localtime", "/etc/localtime").
Symlink("/fortify/etc/login.defs", "/etc/login.defs").
Symlink("/fortify/etc/lsb-release", "/etc/lsb-release").
Symlink("/fortify/etc/lvm", "/etc/lvm").
Symlink("/fortify/etc/machine-id", "/etc/machine-id").
Symlink("/fortify/etc/man_db.conf", "/etc/man_db.conf").
Symlink("/fortify/etc/modprobe.d", "/etc/modprobe.d").
Symlink("/fortify/etc/modules-load.d", "/etc/modules-load.d").
Symlink("/proc/mounts", "/etc/mtab").
Symlink("/fortify/etc/nanorc", "/etc/nanorc").
Symlink("/fortify/etc/netgroup", "/etc/netgroup").
Symlink("/fortify/etc/NetworkManager", "/etc/NetworkManager").
Symlink("/fortify/etc/nix", "/etc/nix").
Symlink("/fortify/etc/nixos", "/etc/nixos").
Symlink("/fortify/etc/NIXOS", "/etc/NIXOS").
Symlink("/fortify/etc/nscd.conf", "/etc/nscd.conf").
Symlink("/fortify/etc/nsswitch.conf", "/etc/nsswitch.conf").
Symlink("/fortify/etc/opensnitchd", "/etc/opensnitchd").
Symlink("/fortify/etc/os-release", "/etc/os-release").
Symlink("/fortify/etc/pam", "/etc/pam").
Symlink("/fortify/etc/pam.d", "/etc/pam.d").
Symlink("/fortify/etc/pipewire", "/etc/pipewire").
Symlink("/fortify/etc/pki", "/etc/pki").
Symlink("/fortify/etc/polkit-1", "/etc/polkit-1").
Symlink("/fortify/etc/profile", "/etc/profile").
Symlink("/fortify/etc/protocols", "/etc/protocols").
Symlink("/fortify/etc/qemu", "/etc/qemu").
Symlink("/fortify/etc/resolv.conf", "/etc/resolv.conf").
Symlink("/fortify/etc/resolvconf.conf", "/etc/resolvconf.conf").
Symlink("/fortify/etc/rpc", "/etc/rpc").
Symlink("/fortify/etc/samba", "/etc/samba").
Symlink("/fortify/etc/sddm.conf", "/etc/sddm.conf").
Symlink("/fortify/etc/secureboot", "/etc/secureboot").
Symlink("/fortify/etc/services", "/etc/services").
Symlink("/fortify/etc/set-environment", "/etc/set-environment").
Symlink("/fortify/etc/shadow", "/etc/shadow").
Symlink("/fortify/etc/shells", "/etc/shells").
Symlink("/fortify/etc/ssh", "/etc/ssh").
Symlink("/fortify/etc/ssl", "/etc/ssl").
Symlink("/fortify/etc/static", "/etc/static").
Symlink("/fortify/etc/subgid", "/etc/subgid").
Symlink("/fortify/etc/subuid", "/etc/subuid").
Symlink("/fortify/etc/sudoers", "/etc/sudoers").
Symlink("/fortify/etc/sysctl.d", "/etc/sysctl.d").
Symlink("/fortify/etc/systemd", "/etc/systemd").
Symlink("/fortify/etc/terminfo", "/etc/terminfo").
Symlink("/fortify/etc/tmpfiles.d", "/etc/tmpfiles.d").
Symlink("/fortify/etc/udev", "/etc/udev").
Symlink("/fortify/etc/udisks2", "/etc/udisks2").
Symlink("/fortify/etc/UPower", "/etc/UPower").
Symlink("/fortify/etc/vconsole.conf", "/etc/vconsole.conf").
Symlink("/fortify/etc/X11", "/etc/X11").
Symlink("/fortify/etc/zfs", "/etc/zfs").
Symlink("/fortify/etc/zinputrc", "/etc/zinputrc").
Symlink("/fortify/etc/zoneinfo", "/etc/zoneinfo").
Symlink("/fortify/etc/zprofile", "/etc/zprofile").
Symlink("/fortify/etc/zshenv", "/etc/zshenv").
Symlink("/fortify/etc/zshrc", "/etc/zshrc").
Bind("/tmp/fortify.1971/tmpdir/9", "/tmp", false, true).
Tmpfs("/tmp/fortify.1971", 1048576).
Tmpfs("/run/user", 1048576).
Tmpfs("/run/user/65534", 8388608).
Bind("/home/chronos", "/home/chronos", false, true).
Bind("/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/passwd", "/etc/passwd").
Bind("/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/group", "/etc/group").
Bind("/run/user/1971/fortify/ebf083d1b175911782d413369b64ce7c/wayland", "/run/user/65534/wayland-0").
Bind("/run/user/1971/fortify/ebf083d1b175911782d413369b64ce7c/pulse", "/run/user/65534/pulse/native").
Bind("/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/pulse-cookie", "/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/pulse-cookie").
Bind("/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/bus", "/run/user/65534/bus").
Bind("/tmp/fortify.1971/ebf083d1b175911782d413369b64ce7c/system_bus_socket", "/run/dbus/system_bus_socket").
Tmpfs("/var/run/nscd", 8192),
},
}

153
internal/app/app_stub_test.go Normal file
View File

@ -0,0 +1,153 @@
package app_test
import (
"fmt"
"io"
"io/fs"
"os/user"
"strconv"
"git.ophivana.moe/security/fortify/internal/linux"
)
// fs methods are not implemented using a real FS
// to help better understand filesystem access behaviour
type stubNixOS struct {
lookPathErr map[string]error
usernameErr map[string]error
}
func (s *stubNixOS) Geteuid() int {
return 1971
}
func (s *stubNixOS) LookupEnv(key string) (string, bool) {
switch key {
case "SHELL":
return "/run/current-system/sw/bin/zsh", true
case "TERM":
return "xterm-256color", true
case "WAYLAND_DISPLAY":
return "wayland-0", true
case "PULSE_COOKIE":
return "", false
case "HOME":
return "/home/ophestra", true
case "XDG_CONFIG_HOME":
return "/home/ophestra/xdg/config", true
default:
panic(fmt.Sprintf("attempted to access unexpected environment variable %q", key))
}
}
func (s *stubNixOS) TempDir() string {
return "/tmp"
}
func (s *stubNixOS) LookPath(file string) (string, error) {
if s.lookPathErr != nil {
if err, ok := s.lookPathErr[file]; ok {
return "", err
}
}
switch file {
case "sudo":
return "/run/wrappers/bin/sudo", nil
case "machinectl":
return "/home/ophestra/.nix-profile/bin/machinectl", nil
default:
panic(fmt.Sprintf("attempted to look up unexpected executable %q", file))
}
}
func (s *stubNixOS) Executable() (string, error) {
return "/home/ophestra/.nix-profile/bin/fortify", nil
}
func (s *stubNixOS) LookupGroup(name string) (*user.Group, error) {
switch name {
case "video":
return &user.Group{Gid: "26", Name: "video"}, nil
default:
return nil, user.UnknownGroupError(name)
}
}
func (s *stubNixOS) ReadDir(name string) ([]fs.DirEntry, error) {
switch name {
case "/":
return stubDirEntries("bin", "boot", "dev", "etc", "home", "lib",
"lib64", "nix", "proc", "root", "run", "srv", "sys", "tmp", "usr", "var")
case "/run":
return stubDirEntries("agetty.reload", "binfmt", "booted-system",
"credentials", "cryptsetup", "current-system", "dbus", "host", "keys",
"libvirt", "libvirtd.pid", "lock", "log", "lvm", "mount", "NetworkManager",
"nginx", "nixos", "nscd", "opengl-driver", "pppd", "resolvconf", "sddm",
"store", "syncoid", "system", "systemd", "tmpfiles.d", "udev", "udisks2",
"user", "utmp", "virtlogd.pid", "wrappers", "zed.pid", "zed.state")
case "/etc":
return stubDirEntries("alsa", "bashrc", "binfmt.d", "dbus-1", "default",
"ethertypes", "fonts", "fstab", "fuse.conf", "group", "host.conf", "hostid",
"hostname", "hostname.CHECKSUM", "hosts", "inputrc", "ipsec.d", "issue", "kbd",
"libblockdev", "locale.conf", "localtime", "login.defs", "lsb-release", "lvm",
"machine-id", "man_db.conf", "modprobe.d", "modules-load.d", "mtab", "nanorc",
"netgroup", "NetworkManager", "nix", "nixos", "NIXOS", "nscd.conf", "nsswitch.conf",
"opensnitchd", "os-release", "pam", "pam.d", "passwd", "pipewire", "pki", "polkit-1",
"profile", "protocols", "qemu", "resolv.conf", "resolvconf.conf", "rpc", "samba",
"sddm.conf", "secureboot", "services", "set-environment", "shadow", "shells", "ssh",
"ssl", "static", "subgid", "subuid", "sudoers", "sysctl.d", "systemd", "terminfo",
"tmpfiles.d", "udev", "udisks2", "UPower", "vconsole.conf", "X11", "zfs", "zinputrc",
"zoneinfo", "zprofile", "zshenv", "zshrc")
default:
panic(fmt.Sprintf("attempted to read unexpected directory %q", name))
}
}
func (s *stubNixOS) Stat(name string) (fs.FileInfo, error) {
switch name {
case "/var/run/nscd":
return nil, nil
case "/run/user/1971/pulse":
return nil, nil
case "/run/user/1971/pulse/native":
return stubFileInfoMode(0666), nil
case "/home/ophestra/.pulse-cookie":
return stubFileInfoIsDir(true), nil
case "/home/ophestra/xdg/config/pulse/cookie":
return stubFileInfoIsDir(false), nil
default:
panic(fmt.Sprintf("attempted to stat unexpected path %q", name))
}
}
func (s *stubNixOS) Open(name string) (fs.File, error) {
switch name {
default:
panic(fmt.Sprintf("attempted to open unexpected file %q", name))
}
}
func (s *stubNixOS) Exit(code int) {
panic("called exit on stub with code " + strconv.Itoa(code))
}
func (s *stubNixOS) Stdout() io.Writer {
panic("requested stdout")
}
func (s *stubNixOS) Paths() linux.Paths {
return linux.Paths{
SharePath: "/tmp/fortify.1971",
RuntimePath: "/run/user/1971",
RunDirPath: "/run/user/1971/fortify",
}
}
func (s *stubNixOS) Uid(aid int) (int, error) {
return 1000000 + 0*10000 + aid, nil
}
func (s *stubNixOS) SdBooted() bool {
return true
}

2
internal/app/app_test.go
View File

@ -22,7 +22,7 @@ type sealTestCase struct {
}
func TestApp(t *testing.T) {
testCases := append(testCasesNixos)
testCases := append(testCasesPd, testCasesNixos...)
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {

2
package.nix
View File

@ -47,6 +47,8 @@ buildGoModule rec {
nativeBuildInputs = [ makeBinaryWrapper ];
postInstall = ''
install -D --target-directory=$out/share/zsh/site-functions comp/*
mkdir "$out/libexec"
mv "$out"/bin/* "$out/libexec/"