hakurei/internal/pipewire/securitycontext.go

package pipewire

/* pipewire/extensions/security-context.h */

const (
	PW_TYPE_INTERFACE_SecurityContext = PW_TYPE_INFO_INTERFACE_BASE + "SecurityContext"
	PW_SECURITY_CONTEXT_PERM_MASK     = PW_PERM_RWX
	PW_VERSION_SECURITY_CONTEXT       = 3

	PW_EXTENSION_MODULE_SECURITY_CONTEXT = PIPEWIRE_MODULE_PREFIX + "module-security-context"
)

const (
	PW_SECURITY_CONTEXT_EVENT_NUM = iota

	PW_VERSION_SECURITY_CONTEXT_EVENTS = 0
)

const (
	PW_SECURITY_CONTEXT_METHOD_ADD_LISTENER = iota
	PW_SECURITY_CONTEXT_METHOD_CREATE
	PW_SECURITY_CONTEXT_METHOD_NUM

	PW_VERSION_SECURITY_CONTEXT_METHODS = 0
)

// SecurityContextCreate is sent to create a new security context.
//
// Creates a new security context with a socket listening FD.
// PipeWire will accept new client connections on listen_fd.
//
// listen_fd must be ready to accept new connections when this
// request is sent by the client. In other words, the client must
// call bind(2) and listen(2) before sending the FD.
//
// close_fd is a FD closed by the client when PipeWire should stop
// accepting new connections on listen_fd.
//
// PipeWire must continue to accept connections on listen_fd when
// the client which created the security context disconnects.
//
// After sending this request, closing listen_fd and close_fd
// remains the only valid operation on them.
type SecurityContextCreate struct {
	// The offset in the SCM_RIGHTS msg_control message to
	// the fd to listen on for new connections.
	ListenFd Fd
	// The offset in the SCM_RIGHTS msg_control message to
	// the fd used to stop listening.
	CloseFd Fd

	// Extra properties. These will be copied on the client
	// that connects through this context.
	Properties *SPADict `json:"props"`
}

// Size satisfies [KnownSize] with a value computed at runtime.
func (c *SecurityContextCreate) Size() Word {
	return SizePrefix +
		Size(SizeFd) +
		Size(SizeFd) +
		c.Properties.Size()
}

// MarshalBinary satisfies [encoding.BinaryMarshaler] via [Marshal].
func (c *SecurityContextCreate) MarshalBinary() ([]byte, error) { return Marshal(c) }

// UnmarshalBinary satisfies [encoding.BinaryUnmarshaler] via [Unmarshal].
func (c *SecurityContextCreate) UnmarshalBinary(data []byte) error { return Unmarshal(data, c) }