зеркало из https://github.com/mozilla/pjs.git
76 строки
2.7 KiB
C
76 строки
2.7 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public
|
|
* License Version 1.1 (the "License"); you may not use this file
|
|
* except in compliance with the License. You may obtain a copy of
|
|
* the License at http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS
|
|
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
|
|
* implied. See the License for the specific language governing
|
|
* rights and limitations under the License.
|
|
*
|
|
* The Original Code is mozilla.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All
|
|
* Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*/
|
|
|
|
|
|
/*
|
|
* dns.h --- portable nonblocking DNS for Unix
|
|
* Created: Jamie Zawinski <jwz@netscape.com>, 19-Dec-96.
|
|
*/
|
|
|
|
#ifndef __UNIX_DNS_H__
|
|
#define __UNIX_DNS_H__
|
|
|
|
/* Kick off an async DNS lookup;
|
|
The returned value is an id representing this transaction;
|
|
the result_callback will be run (in the main process) when we
|
|
have a result. Returns negative if something went wrong.
|
|
If `status' is negative,`result' is an error message.
|
|
If `status' is positive, `result' is a 4-character string of
|
|
the IP address.
|
|
If `status' is 0, then the lookup was prematurely aborted
|
|
via a call to DNS_AbortHostLookup().
|
|
*/
|
|
extern int DNS_AsyncLookupHost(const char *name,
|
|
int (*result_callback) (void *id,
|
|
void *closure,
|
|
int status,
|
|
const char *result),
|
|
void *closure,
|
|
void **id_return);
|
|
|
|
/* Prematurely give up on the given host-lookup transaction.
|
|
The `id' is what was returned by DNS_AsyncLookupHost.
|
|
This causes the result_callback to be called with a negative
|
|
status.
|
|
*/
|
|
extern int DNS_AbortHostLookup(void *id);
|
|
|
|
/* Call this from main() to initialize the async DNS library.
|
|
Returns a file descriptor that should be selected for, or
|
|
negative if something went wrong. Pass it the argc/argv
|
|
that your `main' was called with (it needs these pointers
|
|
in order to give its forked subprocesses sensible names.)
|
|
*/
|
|
extern int DNS_SpawnProcess(int argc, char **argv);
|
|
|
|
/* The main select() loop of your program should call this when the fd
|
|
that was returned by DNS_SpawnProcess comes active. This may cause
|
|
some of the result_callback functions to run.
|
|
|
|
If this returns negative, then a fatal error has happened, and you
|
|
should close `fd' and not select() for it again. Call gethostbyname()
|
|
in the foreground or something.
|
|
*/
|
|
extern int DNS_ServiceProcess(int fd);
|
|
|
|
#endif /* __UNIX_DNS_H__ */
|