diff options
| -rw-r--r-- | internal/app/app_nixos_test.go | 313 | ||||
| -rw-r--r-- | internal/app/app_test.go | 320 |
2 files changed, 324 insertions, 309 deletions
diff --git a/internal/app/app_nixos_test.go b/internal/app/app_nixos_test.go new file mode 100644 index 00000000..9488c6b0 --- /dev/null +++ b/internal/app/app_nixos_test.go @@ -0,0 +1,313 @@ +package app_test + +import ( + "fmt" + "io/fs" + "os/user" + "strconv" + + "git.ophivana.moe/security/fortify/acl" + "git.ophivana.moe/security/fortify/helper/bwrap" + "git.ophivana.moe/security/fortify/internal" + "git.ophivana.moe/security/fortify/internal/app" + "git.ophivana.moe/security/fortify/internal/system" +) + +var testCasesNixos = []sealTestCase{ + { + "nixos permissive defaults no enablements", new(stubNixOS), + &app.Config{ + User: "chronos", + Command: make([]string, 0), + Method: "sudo", + }, + app.ID{ + 0x4a, 0x45, 0x0b, 0x65, + 0x96, 0xd7, 0xbc, 0x15, + 0xbd, 0x01, 0x78, 0x0e, + 0xb9, 0xa6, 0x07, 0xac, + }, + system.New(150). + Ensure("/tmp/fortify.1971", 0701). + Ephemeral(system.Process, "/tmp/fortify.1971/4a450b6596d7bc15bd01780eb9a607ac", 0701). + Ensure("/tmp/fortify.1971/tmpdir", 0700).UpdatePermType(system.User, "/tmp/fortify.1971/tmpdir", acl.Execute). + Ensure("/tmp/fortify.1971/tmpdir/150", 01700).UpdatePermType(system.User, "/tmp/fortify.1971/tmpdir/150", 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, + SetEnv: map[string]string{ + "HOME": "/home/chronos", + "SHELL": "/run/current-system/sw/bin/zsh", + "TERM": "xterm-256color", + "USER": "chronos", + "XDG_RUNTIME_DIR": "/run/user/150", + "XDG_SESSION_CLASS": "user", + "XDG_SESSION_TYPE": "tty"}, + Chmod: make(bwrap.ChmodConfig), + DieWithParent: true, + AsInit: true, + }).SetUID(65534).SetGID(65534). + Procfs("/proc").DevTmpfs("/dev").Mqueue("/dev/mqueue"). + Tmpfs("/dev/fortify", 4096). + Bind("/bin", "/bin", false, true). + Bind("/boot", "/boot", false, true). + Bind("/etc", "/dev/fortify/etc"). + 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). + Symlink("/dev/fortify/etc/alsa", "/etc/alsa"). + Symlink("/dev/fortify/etc/bashrc", "/etc/bashrc"). + Symlink("/dev/fortify/etc/binfmt.d", "/etc/binfmt.d"). + Symlink("/dev/fortify/etc/dbus-1", "/etc/dbus-1"). + Symlink("/dev/fortify/etc/default", "/etc/default"). + Symlink("/dev/fortify/etc/ethertypes", "/etc/ethertypes"). + Symlink("/dev/fortify/etc/fonts", "/etc/fonts"). + Symlink("/dev/fortify/etc/fstab", "/etc/fstab"). + Symlink("/dev/fortify/etc/fuse.conf", "/etc/fuse.conf"). + Symlink("/dev/fortify/etc/host.conf", "/etc/host.conf"). + Symlink("/dev/fortify/etc/hostid", "/etc/hostid"). + Symlink("/dev/fortify/etc/hostname", "/etc/hostname"). + Symlink("/dev/fortify/etc/hostname.CHECKSUM", "/etc/hostname.CHECKSUM"). + Symlink("/dev/fortify/etc/hosts", "/etc/hosts"). + Symlink("/dev/fortify/etc/inputrc", "/etc/inputrc"). + Symlink("/dev/fortify/etc/ipsec.d", "/etc/ipsec.d"). + Symlink("/dev/fortify/etc/issue", "/etc/issue"). + Symlink("/dev/fortify/etc/kbd", "/etc/kbd"). + Symlink("/dev/fortify/etc/libblockdev", "/etc/libblockdev"). + Symlink("/dev/fortify/etc/locale.conf", "/etc/locale.conf"). + Symlink("/dev/fortify/etc/localtime", "/etc/localtime"). + Symlink("/dev/fortify/etc/login.defs", "/etc/login.defs"). + Symlink("/dev/fortify/etc/lsb-release", "/etc/lsb-release"). + Symlink("/dev/fortify/etc/lvm", "/etc/lvm"). + Symlink("/dev/fortify/etc/machine-id", "/etc/machine-id"). + Symlink("/dev/fortify/etc/man_db.conf", "/etc/man_db.conf"). + Symlink("/dev/fortify/etc/modprobe.d", "/etc/modprobe.d"). + Symlink("/dev/fortify/etc/modules-load.d", "/etc/modules-load.d"). + Symlink("/proc/mounts", "/etc/mtab"). + Symlink("/dev/fortify/etc/nanorc", "/etc/nanorc"). + Symlink("/dev/fortify/etc/netgroup", "/etc/netgroup"). + Symlink("/dev/fortify/etc/NetworkManager", "/etc/NetworkManager"). + Symlink("/dev/fortify/etc/nix", "/etc/nix"). + Symlink("/dev/fortify/etc/nixos", "/etc/nixos"). + Symlink("/dev/fortify/etc/NIXOS", "/etc/NIXOS"). + Symlink("/dev/fortify/etc/nscd.conf", "/etc/nscd.conf"). + Symlink("/dev/fortify/etc/nsswitch.conf", "/etc/nsswitch.conf"). + Symlink("/dev/fortify/etc/opensnitchd", "/etc/opensnitchd"). + Symlink("/dev/fortify/etc/os-release", "/etc/os-release"). + Symlink("/dev/fortify/etc/pam", "/etc/pam"). + Symlink("/dev/fortify/etc/pam.d", "/etc/pam.d"). + Symlink("/dev/fortify/etc/pipewire", "/etc/pipewire"). + Symlink("/dev/fortify/etc/pki", "/etc/pki"). + Symlink("/dev/fortify/etc/polkit-1", "/etc/polkit-1"). + Symlink("/dev/fortify/etc/profile", "/etc/profile"). + Symlink("/dev/fortify/etc/protocols", "/etc/protocols"). + Symlink("/dev/fortify/etc/qemu", "/etc/qemu"). + Symlink("/dev/fortify/etc/resolv.conf", "/etc/resolv.conf"). + Symlink("/dev/fortify/etc/resolvconf.conf", "/etc/resolvconf.conf"). + Symlink("/dev/fortify/etc/rpc", "/etc/rpc"). + Symlink("/dev/fortify/etc/samba", "/etc/samba"). + Symlink("/dev/fortify/etc/sddm.conf", "/etc/sddm.conf"). + Symlink("/dev/fortify/etc/secureboot", "/etc/secureboot"). + Symlink("/dev/fortify/etc/services", "/etc/services"). + Symlink("/dev/fortify/etc/set-environment", "/etc/set-environment"). + Symlink("/dev/fortify/etc/shadow", "/etc/shadow"). + Symlink("/dev/fortify/etc/shells", "/etc/shells"). + Symlink("/dev/fortify/etc/ssh", "/etc/ssh"). + Symlink("/dev/fortify/etc/ssl", "/etc/ssl"). + Symlink("/dev/fortify/etc/static", "/etc/static"). + Symlink("/dev/fortify/etc/subgid", "/etc/subgid"). + Symlink("/dev/fortify/etc/subuid", "/etc/subuid"). + Symlink("/dev/fortify/etc/sudoers", "/etc/sudoers"). + Symlink("/dev/fortify/etc/sysctl.d", "/etc/sysctl.d"). + Symlink("/dev/fortify/etc/systemd", "/etc/systemd"). + Symlink("/dev/fortify/etc/terminfo", "/etc/terminfo"). + Symlink("/dev/fortify/etc/tmpfiles.d", "/etc/tmpfiles.d"). + Symlink("/dev/fortify/etc/udev", "/etc/udev"). + Symlink("/dev/fortify/etc/udisks2", "/etc/udisks2"). + Symlink("/dev/fortify/etc/UPower", "/etc/UPower"). + Symlink("/dev/fortify/etc/vconsole.conf", "/etc/vconsole.conf"). + Symlink("/dev/fortify/etc/X11", "/etc/X11"). + Symlink("/dev/fortify/etc/zfs", "/etc/zfs"). + Symlink("/dev/fortify/etc/zinputrc", "/etc/zinputrc"). + Symlink("/dev/fortify/etc/zoneinfo", "/etc/zoneinfo"). + Symlink("/dev/fortify/etc/zprofile", "/etc/zprofile"). + Symlink("/dev/fortify/etc/zshenv", "/etc/zshenv"). + Symlink("/dev/fortify/etc/zshrc", "/etc/zshrc"). + Bind("/tmp/fortify.1971/tmpdir/150", "/tmp", false, true). + Tmpfs("/tmp/fortify.1971", 1048576). + Tmpfs("/run/user", 1048576). + Tmpfs("/run/user/150", 8388608). + Bind("/tmp/fortify.1971/4a450b6596d7bc15bd01780eb9a607ac/passwd", "/etc/passwd"). + Bind("/tmp/fortify.1971/4a450b6596d7bc15bd01780eb9a607ac/group", "/etc/group"). + 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 + 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 + 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) Lookup(username string) (*user.User, error) { + if s.usernameErr != nil { + if err, ok := s.usernameErr[username]; ok { + return nil, err + } + } + + switch username { + case "chronos": + return &user.User{ + Uid: "150", + Gid: "101", + Username: "chronos", + HomeDir: "/home/chronos", + }, nil + default: + return nil, user.UnknownUserError(username) + } +} + +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 + 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) Paths() internal.Paths { + return internal.Paths{ + SharePath: "/tmp/fortify.1971", + RuntimePath: "/run/user/1971", + RunDirPath: "/run/user/1971/fortify", + } +} diff --git a/internal/app/app_test.go b/internal/app/app_test.go index ed98a6bd..2d7958b6 100644 --- a/internal/app/app_test.go +++ b/internal/app/app_test.go @@ -1,206 +1,31 @@ package app_test import ( - "fmt" "io/fs" - "os/user" "reflect" - "strconv" "testing" - "git.ophivana.moe/security/fortify/acl" "git.ophivana.moe/security/fortify/helper/bwrap" "git.ophivana.moe/security/fortify/internal" "git.ophivana.moe/security/fortify/internal/app" "git.ophivana.moe/security/fortify/internal/system" ) +type sealTestCase struct { + name string + os internal.System + config *app.Config + id app.ID + wantSys *system.I + wantBwrap *bwrap.Config +} + func TestApp(t *testing.T) { - testCases := []struct { - name string - config *app.Config - id app.ID - wantSys *system.I - wantBwrap *bwrap.Config - }{ - { - "permissive defaults no enablements", - &app.Config{ - User: "chronos", - Command: make([]string, 0), - Method: "sudo", - }, - app.ID{ - 0x4a, 0x45, 0x0b, 0x65, - 0x96, 0xd7, 0xbc, 0x15, - 0xbd, 0x01, 0x78, 0x0e, - 0xb9, 0xa6, 0x07, 0xac, - }, - system.New(150). - Ensure("/tmp/fortify.1971", 0701). - Ephemeral(system.Process, "/tmp/fortify.1971/4a450b6596d7bc15bd01780eb9a607ac", 0701). - Ensure("/tmp/fortify.1971/tmpdir", 0700).UpdatePermType(system.User, "/tmp/fortify.1971/tmpdir", acl.Execute). - Ensure("/tmp/fortify.1971/tmpdir/150", 01700).UpdatePermType(system.User, "/tmp/fortify.1971/tmpdir/150", 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, - SetEnv: map[string]string{ - "HOME": "/home/chronos", - "SHELL": "/run/current-system/sw/bin/zsh", - "TERM": "xterm-256color", - "USER": "chronos", - "XDG_RUNTIME_DIR": "/run/user/150", - "XDG_SESSION_CLASS": "user", - "XDG_SESSION_TYPE": "tty"}, - Chmod: make(bwrap.ChmodConfig), - DieWithParent: true, - AsInit: true, - }).SetUID(65534).SetGID(65534). - Procfs("/proc").DevTmpfs("/dev").Mqueue("/dev/mqueue"). - Tmpfs("/dev/fortify", 4096). - Bind("/bin", "/bin", false, true). - Bind("/boot", "/boot", false, true). - Bind("/etc", "/dev/fortify/etc"). - 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). - Symlink("/dev/fortify/etc/alsa", "/etc/alsa"). - Symlink("/dev/fortify/etc/bashrc", "/etc/bashrc"). - Symlink("/dev/fortify/etc/binfmt.d", "/etc/binfmt.d"). - Symlink("/dev/fortify/etc/dbus-1", "/etc/dbus-1"). - Symlink("/dev/fortify/etc/default", "/etc/default"). - Symlink("/dev/fortify/etc/ethertypes", "/etc/ethertypes"). - Symlink("/dev/fortify/etc/fonts", "/etc/fonts"). - Symlink("/dev/fortify/etc/fstab", "/etc/fstab"). - Symlink("/dev/fortify/etc/fuse.conf", "/etc/fuse.conf"). - Symlink("/dev/fortify/etc/host.conf", "/etc/host.conf"). - Symlink("/dev/fortify/etc/hostid", "/etc/hostid"). - Symlink("/dev/fortify/etc/hostname", "/etc/hostname"). - Symlink("/dev/fortify/etc/hostname.CHECKSUM", "/etc/hostname.CHECKSUM"). - Symlink("/dev/fortify/etc/hosts", "/etc/hosts"). - Symlink("/dev/fortify/etc/inputrc", "/etc/inputrc"). - Symlink("/dev/fortify/etc/ipsec.d", "/etc/ipsec.d"). - Symlink("/dev/fortify/etc/issue", "/etc/issue"). - Symlink("/dev/fortify/etc/kbd", "/etc/kbd"). - Symlink("/dev/fortify/etc/libblockdev", "/etc/libblockdev"). - Symlink("/dev/fortify/etc/locale.conf", "/etc/locale.conf"). - Symlink("/dev/fortify/etc/localtime", "/etc/localtime"). - Symlink("/dev/fortify/etc/login.defs", "/etc/login.defs"). - Symlink("/dev/fortify/etc/lsb-release", "/etc/lsb-release"). - Symlink("/dev/fortify/etc/lvm", "/etc/lvm"). - Symlink("/dev/fortify/etc/machine-id", "/etc/machine-id"). - Symlink("/dev/fortify/etc/man_db.conf", "/etc/man_db.conf"). - Symlink("/dev/fortify/etc/modprobe.d", "/etc/modprobe.d"). - Symlink("/dev/fortify/etc/modules-load.d", "/etc/modules-load.d"). - Symlink("/proc/mounts", "/etc/mtab"). - Symlink("/dev/fortify/etc/nanorc", "/etc/nanorc"). - Symlink("/dev/fortify/etc/netgroup", "/etc/netgroup"). - Symlink("/dev/fortify/etc/NetworkManager", "/etc/NetworkManager"). - Symlink("/dev/fortify/etc/nix", "/etc/nix"). - Symlink("/dev/fortify/etc/nixos", "/etc/nixos"). - Symlink("/dev/fortify/etc/NIXOS", "/etc/NIXOS"). - Symlink("/dev/fortify/etc/nscd.conf", "/etc/nscd.conf"). - Symlink("/dev/fortify/etc/nsswitch.conf", "/etc/nsswitch.conf"). - Symlink("/dev/fortify/etc/opensnitchd", "/etc/opensnitchd"). - Symlink("/dev/fortify/etc/os-release", "/etc/os-release"). - Symlink("/dev/fortify/etc/pam", "/etc/pam"). - Symlink("/dev/fortify/etc/pam.d", "/etc/pam.d"). - Symlink("/dev/fortify/etc/pipewire", "/etc/pipewire"). - Symlink("/dev/fortify/etc/pki", "/etc/pki"). - Symlink("/dev/fortify/etc/polkit-1", "/etc/polkit-1"). - Symlink("/dev/fortify/etc/profile", "/etc/profile"). - Symlink("/dev/fortify/etc/protocols", "/etc/protocols"). - Symlink("/dev/fortify/etc/qemu", "/etc/qemu"). - Symlink("/dev/fortify/etc/resolv.conf", "/etc/resolv.conf"). - Symlink("/dev/fortify/etc/resolvconf.conf", "/etc/resolvconf.conf"). - Symlink("/dev/fortify/etc/rpc", "/etc/rpc"). - Symlink("/dev/fortify/etc/samba", "/etc/samba"). - Symlink("/dev/fortify/etc/sddm.conf", "/etc/sddm.conf"). - Symlink("/dev/fortify/etc/secureboot", "/etc/secureboot"). - Symlink("/dev/fortify/etc/services", "/etc/services"). - Symlink("/dev/fortify/etc/set-environment", "/etc/set-environment"). - Symlink("/dev/fortify/etc/shadow", "/etc/shadow"). - Symlink("/dev/fortify/etc/shells", "/etc/shells"). - Symlink("/dev/fortify/etc/ssh", "/etc/ssh"). - Symlink("/dev/fortify/etc/ssl", "/etc/ssl"). - Symlink("/dev/fortify/etc/static", "/etc/static"). - Symlink("/dev/fortify/etc/subgid", "/etc/subgid"). - Symlink("/dev/fortify/etc/subuid", "/etc/subuid"). - Symlink("/dev/fortify/etc/sudoers", "/etc/sudoers"). - Symlink("/dev/fortify/etc/sysctl.d", "/etc/sysctl.d"). - Symlink("/dev/fortify/etc/systemd", "/etc/systemd"). - Symlink("/dev/fortify/etc/terminfo", "/etc/terminfo"). - Symlink("/dev/fortify/etc/tmpfiles.d", "/etc/tmpfiles.d"). - Symlink("/dev/fortify/etc/udev", "/etc/udev"). - Symlink("/dev/fortify/etc/udisks2", "/etc/udisks2"). - Symlink("/dev/fortify/etc/UPower", "/etc/UPower"). - Symlink("/dev/fortify/etc/vconsole.conf", "/etc/vconsole.conf"). - Symlink("/dev/fortify/etc/X11", "/etc/X11"). - Symlink("/dev/fortify/etc/zfs", "/etc/zfs"). - Symlink("/dev/fortify/etc/zinputrc", "/etc/zinputrc"). - Symlink("/dev/fortify/etc/zoneinfo", "/etc/zoneinfo"). - Symlink("/dev/fortify/etc/zprofile", "/etc/zprofile"). - Symlink("/dev/fortify/etc/zshenv", "/etc/zshenv"). - Symlink("/dev/fortify/etc/zshrc", "/etc/zshrc"). - Bind("/tmp/fortify.1971/tmpdir/150", "/tmp", false, true). - Tmpfs("/tmp/fortify.1971", 1048576). - Tmpfs("/run/user", 1048576). - Tmpfs("/run/user/150", 8388608). - Bind("/tmp/fortify.1971/4a450b6596d7bc15bd01780eb9a607ac/passwd", "/etc/passwd"). - Bind("/tmp/fortify.1971/4a450b6596d7bc15bd01780eb9a607ac/group", "/etc/group"). - Tmpfs("/var/run/nscd", 8192), - }, - } + testCases := append(testCasesNixos) for _, tc := range testCases { t.Run(tc.name, func(t *testing.T) { - a := app.NewWithID(tc.id, new(stub)) + a := app.NewWithID(tc.id, tc.os) if !t.Run("seal", func(t *testing.T) { if err := a.Seal(tc.config); err != nil { @@ -229,129 +54,6 @@ func TestApp(t *testing.T) { } } -// fs methods are not implemented using a real FS -// to help better understand filesystem access behaviour -type stub struct { - lookPathErr map[string]error - usernameErr map[string]error -} - -func (s *stub) Geteuid() int { - return 1971 -} - -func (s *stub) LookupEnv(key string) (string, bool) { - switch key { - case "SHELL": - return "/run/current-system/sw/bin/zsh", true - case "TERM": - return "xterm-256color", true - default: - panic(fmt.Sprintf("attempted to access unexpected environment variable %q", key)) - } -} - -func (s *stub) TempDir() string { - return "/tmp" -} - -func (s *stub) 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 - default: - panic(fmt.Sprintf("attempted to look up unexpected executable %q", file)) - } -} - -func (s *stub) Executable() (string, error) { - return "/home/ophestra/.nix-profile/bin/fortify", nil -} - -func (s *stub) Lookup(username string) (*user.User, error) { - if s.usernameErr != nil { - if err, ok := s.usernameErr[username]; ok { - return nil, err - } - } - - switch username { - case "chronos": - return &user.User{ - Uid: "150", - Gid: "101", - Username: "chronos", - HomeDir: "/home/chronos", - }, nil - default: - return nil, user.UnknownUserError(username) - } -} - -func (s *stub) 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 *stub) Stat(name string) (fs.FileInfo, error) { - switch name { - case "/var/run/nscd": - return nil, nil - default: - panic(fmt.Sprintf("attempted to stat unexpected path %q", name)) - } -} - -func (s *stub) Open(name string) (fs.File, error) { - switch name { - default: - panic(fmt.Sprintf("attempted to open unexpected file %q", name)) - } -} - -func (s *stub) Exit(code int) { - panic("called exit on stub with code " + strconv.Itoa(code)) -} - -func (s *stub) Paths() internal.Paths { - return internal.Paths{ - SharePath: "/tmp/fortify.1971", - RuntimePath: "/run/user/1971", - RunDirPath: "/run/user/1971/fortify", - } -} - func stubDirEntries(names ...string) (e []fs.DirEntry, err error) { e = make([]fs.DirEntry, len(names)) for i, name := range names { |