system: move out of internal

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/system/wayland.go

@@ -1,89 +0,0 @@
-package system
-
-import (
-	"errors"
-	"fmt"
-	"os"
-
-	"git.gensokyo.uk/security/fortify/acl"
-	"git.gensokyo.uk/security/fortify/wl"
-)
-
-// Wayland sets up a wayland socket with a security context attached.
-func (sys *I) Wayland(syncFd **os.File, dst, src, appID, instanceID string) *I {
-	sys.lock.Lock()
-	defer sys.lock.Unlock()
-
-	sys.ops = append(sys.ops, &Wayland{syncFd, dst, src, appID, instanceID, wl.Conn{}})
-
-	return sys
-}
-
-type Wayland struct {
-	sync              **os.File
-	dst, src          string
-	appID, instanceID string
-
-	conn wl.Conn
-}
-
-func (w *Wayland) Type() Enablement { return Process }
-
-func (w *Wayland) apply(sys *I) error {
-	if w.sync == nil {
-		// this is a misuse of the API; do not return an error message
-		return errors.New("invalid sync")
-	}
-
-	// the Wayland op is not repeatable
-	if *w.sync != nil {
-		// this is a misuse of the API; do not return an error message
-		return errors.New("attempted to attach multiple wayland sockets")
-	}
-
-	if err := w.conn.Attach(w.src); err != nil {
-		// make console output less nasty
-		if errors.Is(err, os.ErrNotExist) {
-			err = os.ErrNotExist
-		}
-		return sys.wrapErrSuffix(err,
-			fmt.Sprintf("cannot attach to wayland on %q:", w.src))
-	} else {
-		sys.printf("wayland attached on %q", w.src)
-	}
-
-	if sp, err := w.conn.Bind(w.dst, w.appID, w.instanceID); err != nil {
-		return sys.wrapErrSuffix(err,
-			fmt.Sprintf("cannot bind to socket on %q:", w.dst))
-	} else {
-		*w.sync = sp
-		sys.printf("wayland listening on %q", w.dst)
-		return sys.wrapErrSuffix(errors.Join(os.Chmod(w.dst, 0), acl.UpdatePerm(w.dst, sys.uid, acl.Read, acl.Write, acl.Execute)),
-			fmt.Sprintf("cannot chmod socket on %q:", w.dst))
-	}
-}
-
-func (w *Wayland) revert(sys *I, ec *Criteria) error {
-	if ec.hasType(w) {
-		sys.printf("removing wayland socket on %q", w.dst)
-		if err := os.Remove(w.dst); err != nil && !errors.Is(err, os.ErrNotExist) {
-			return err
-		}
-
-		sys.printf("detaching from wayland on %q", w.src)
-		return sys.wrapErrSuffix(w.conn.Close(),
-			fmt.Sprintf("cannot detach from wayland on %q:", w.src))
-	} else {
-		sys.printf("skipping wayland cleanup on %q", w.dst)
-		return nil
-	}
-}
-
-func (w *Wayland) Is(o Op) bool {
-	w0, ok := o.(*Wayland)
-	return ok && w.dst == w0.dst && w.src == w0.src &&
-		w.appID == w0.appID && w.instanceID == w0.instanceID
-}
-
-func (w *Wayland) Path() string   { return w.dst }
-func (w *Wayland) String() string { return fmt.Sprintf("wayland socket at %q", w.dst) }