rename to fortify and restructure

More sandbox features will be added and this will no longer track ego's features and behaviour.

Signed-off-by: Ophestra Umiker <cat@ophivana.moe>

internal/xcb/c.go

@@ -0,0 +1,33 @@
+package xcb
+
+import (
+	"errors"
+)
+
+//#include <stdlib.h>
+//#include <xcb/xcb.h>
+//#cgo linux LDFLAGS: -lxcb
+import "C"
+
+func xcbHandleConnectionError(c *C.xcb_connection_t) error {
+	if errno := C.xcb_connection_has_error(c); errno != 0 {
+		switch errno {
+		case C.XCB_CONN_ERROR:
+			return errors.New("connection error")
+		case C.XCB_CONN_CLOSED_EXT_NOTSUPPORTED:
+			return errors.New("extension not supported")
+		case C.XCB_CONN_CLOSED_MEM_INSUFFICIENT:
+			return errors.New("memory not available")
+		case C.XCB_CONN_CLOSED_REQ_LEN_EXCEED:
+			return errors.New("request length exceeded")
+		case C.XCB_CONN_CLOSED_PARSE_ERR:
+			return errors.New("invalid display string")
+		case C.XCB_CONN_CLOSED_INVALID_SCREEN:
+			return errors.New("server has no screen matching display")
+		default:
+			return errors.New("generic X11 failure")
+		}
+	} else {
+		return nil
+	}
+}

internal/xcb/export.go

@@ -0,0 +1,47 @@
+package xcb
+
+//#include <stdlib.h>
+//#include <xcb/xcb.h>
+//#cgo linux LDFLAGS: -lxcb
+import "C"
+import (
+	"errors"
+	"unsafe"
+)
+
+const (
+	HostModeInsert = C.XCB_HOST_MODE_INSERT
+	HostModeDelete = C.XCB_HOST_MODE_DELETE
+
+	FamilyInternet          = C.XCB_FAMILY_INTERNET
+	FamilyDecnet            = C.XCB_FAMILY_DECNET
+	FamilyChaos             = C.XCB_FAMILY_CHAOS
+	FamilyServerInterpreted = C.XCB_FAMILY_SERVER_INTERPRETED
+	FamilyInternet6         = C.XCB_FAMILY_INTERNET_6
+)
+
+func ChangeHosts(mode, family C.uint8_t, address string) error {
+	var c *C.xcb_connection_t
+	c = C.xcb_connect(nil, nil)
+	defer C.xcb_disconnect(c)
+
+	if err := xcbHandleConnectionError(c); err != nil {
+		return err
+	}
+
+	addr := C.CString(address)
+	cookie := C.xcb_change_hosts_checked(c, mode, family, C.ushort(len(address)), (*C.uchar)(unsafe.Pointer(addr)))
+	C.free(unsafe.Pointer(addr))
+
+	if err := xcbHandleConnectionError(c); err != nil {
+		return err
+	}
+
+	e := C.xcb_request_check(c, cookie)
+	if e != nil {
+		defer C.free(unsafe.Pointer(e))
+		return errors.New("xcb_change_hosts() failed")
+	}
+
+	return nil
+}