81 lines
2.0 KiB
Go
81 lines
2.0 KiB
Go
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package system
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import (
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"errors"
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"fmt"
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"os"
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"git.ophivana.moe/security/fortify/acl"
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"git.ophivana.moe/security/fortify/internal/fmsg"
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"git.ophivana.moe/security/fortify/wl"
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)
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// Wayland sets up a wayland socket with a security context attached.
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func (sys *I) Wayland(dst, src, appID, instanceID string) *I {
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sys.lock.Lock()
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defer sys.lock.Unlock()
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sys.ops = append(sys.ops, Wayland{[2]string{dst, src}, new(wl.Conn), appID, instanceID})
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return sys
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}
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type Wayland struct {
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pair [2]string
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conn *wl.Conn
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appID, instanceID string
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}
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func (w Wayland) Type() Enablement {
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return Process
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}
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func (w Wayland) apply(sys *I) error {
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if err := w.conn.Attach(w.pair[1]); err != nil {
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return fmsg.WrapErrorSuffix(err,
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fmt.Sprintf("cannot attach to wayland on %q:", w.pair[1]))
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} else {
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fmsg.VPrintf("wayland attached on %q", w.pair[1])
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}
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if sp, err := w.conn.Bind(w.pair[0], w.appID, w.instanceID); err != nil {
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return fmsg.WrapErrorSuffix(err,
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fmt.Sprintf("cannot bind to socket on %q:", w.pair[0]))
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} else {
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sys.sp = sp
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fmsg.VPrintf("wayland listening on %q", w.pair[0])
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return fmsg.WrapErrorSuffix(errors.Join(os.Chmod(w.pair[0], 0), acl.UpdatePerm(w.pair[0], sys.uid, acl.Read, acl.Write, acl.Execute)),
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fmt.Sprintf("cannot chmod socket on %q:", w.pair[0]))
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}
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}
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func (w Wayland) revert(_ *I, ec *Criteria) error {
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if ec.hasType(w) {
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fmsg.VPrintf("removing wayland socket on %q", w.pair[0])
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if err := os.Remove(w.pair[0]); err != nil && !errors.Is(err, os.ErrNotExist) {
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return err
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}
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fmsg.VPrintf("detaching from wayland on %q", w.pair[1])
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return fmsg.WrapErrorSuffix(w.conn.Close(),
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fmt.Sprintf("cannot detach from wayland on %q:", w.pair[1]))
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} else {
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fmsg.VPrintf("skipping wayland cleanup on %q", w.pair[0])
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return nil
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}
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}
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func (w Wayland) Is(o Op) bool {
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w0, ok := o.(Wayland)
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return ok && w.pair == w0.pair
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}
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func (w Wayland) Path() string {
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return w.pair[0]
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}
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func (w Wayland) String() string {
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return fmt.Sprintf("wayland socket at %q", w.pair[0])
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}
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