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