102 lines
3.3 KiB
Go
102 lines
3.3 KiB
Go
package main
|
|
|
|
import (
|
|
"path"
|
|
"strings"
|
|
|
|
"git.gensokyo.uk/security/fortify/fst"
|
|
"git.gensokyo.uk/security/fortify/helper/bwrap"
|
|
"git.gensokyo.uk/security/fortify/internal/fmsg"
|
|
)
|
|
|
|
func withNixDaemon(
|
|
action string, command []string, net bool, updateConfig func(config *fst.Config) *fst.Config,
|
|
app *bundleInfo, pathSet *appPathSet, dropShell bool, beforeFail func(),
|
|
) {
|
|
fortifyAppDropShell(updateConfig(&fst.Config{
|
|
ID: app.ID,
|
|
Command: []string{shell, "-lc", "rm -f /nix/var/nix/daemon-socket/socket && " +
|
|
// start nix-daemon
|
|
"nix-daemon --store / & " +
|
|
// wait for socket to appear
|
|
"(while [ ! -S /nix/var/nix/daemon-socket/socket ]; do sleep 0.01; done) && " +
|
|
// create directory so nix stops complaining
|
|
"mkdir -p /nix/var/nix/profiles/per-user/root/channels && " +
|
|
strings.Join(command, " && ") +
|
|
// terminate nix-daemon
|
|
" && pkill nix-daemon",
|
|
},
|
|
Confinement: fst.ConfinementConfig{
|
|
AppID: app.AppID,
|
|
Username: "fortify",
|
|
Inner: path.Join("/data/data", app.ID),
|
|
Outer: pathSet.homeDir,
|
|
Sandbox: &fst.SandboxConfig{
|
|
Hostname: formatHostname(app.Name) + "-" + action,
|
|
UserNS: true, // nix sandbox requires userns
|
|
Net: net,
|
|
Syscall: &bwrap.SyscallPolicy{Multiarch: true},
|
|
NoNewSession: dropShell,
|
|
Filesystem: []*fst.FilesystemConfig{
|
|
{Src: pathSet.nixPath, Dst: "/nix", Write: true, Must: true},
|
|
},
|
|
Link: [][2]string{
|
|
{app.CurrentSystem, "/run/current-system"},
|
|
{"/run/current-system/sw/bin", "/bin"},
|
|
{"/run/current-system/sw/bin", "/usr/bin"},
|
|
},
|
|
Etc: path.Join(pathSet.cacheDir, "etc"),
|
|
AutoEtc: true,
|
|
},
|
|
ExtraPerms: []*fst.ExtraPermConfig{
|
|
{Path: dataHome, Execute: true},
|
|
{Ensure: true, Path: pathSet.baseDir, Read: true, Write: true, Execute: true},
|
|
},
|
|
},
|
|
}), dropShell, beforeFail)
|
|
}
|
|
|
|
func withCacheDir(action string, command []string, workDir string, app *bundleInfo, pathSet *appPathSet, dropShell bool, beforeFail func()) {
|
|
fortifyAppDropShell(&fst.Config{
|
|
ID: app.ID,
|
|
Command: []string{shell, "-lc", strings.Join(command, " && ")},
|
|
Confinement: fst.ConfinementConfig{
|
|
AppID: app.AppID,
|
|
Username: "nixos",
|
|
Inner: path.Join("/data/data", app.ID, "cache"),
|
|
Outer: pathSet.cacheDir, // this also ensures cacheDir via shim
|
|
Sandbox: &fst.SandboxConfig{
|
|
Hostname: formatHostname(app.Name) + "-" + action,
|
|
Syscall: &bwrap.SyscallPolicy{Multiarch: true},
|
|
NoNewSession: dropShell,
|
|
Filesystem: []*fst.FilesystemConfig{
|
|
{Src: path.Join(workDir, "nix"), Dst: "/nix", Must: true},
|
|
{Src: workDir, Dst: path.Join(fst.Tmp, "bundle"), Must: true},
|
|
},
|
|
Link: [][2]string{
|
|
{app.CurrentSystem, "/run/current-system"},
|
|
{"/run/current-system/sw/bin", "/bin"},
|
|
{"/run/current-system/sw/bin", "/usr/bin"},
|
|
},
|
|
Etc: path.Join(workDir, "etc"),
|
|
AutoEtc: true,
|
|
},
|
|
ExtraPerms: []*fst.ExtraPermConfig{
|
|
{Path: dataHome, Execute: true},
|
|
{Ensure: true, Path: pathSet.baseDir, Read: true, Write: true, Execute: true},
|
|
{Path: workDir, Execute: true},
|
|
},
|
|
},
|
|
}, dropShell, beforeFail)
|
|
}
|
|
|
|
func fortifyAppDropShell(config *fst.Config, dropShell bool, beforeFail func()) {
|
|
if dropShell {
|
|
config.Command = []string{shell, "-l"}
|
|
fortifyApp(config, beforeFail)
|
|
beforeFail()
|
|
fmsg.Exit(0)
|
|
}
|
|
fortifyApp(config, beforeFail)
|
|
}
|