1/* -*- Mode: C; tab-width: 4 -*-
2 *
3 * Copyright (c) 2002-2004 Apple Computer, Inc. All rights reserved.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18#ifndef __mDNSPlatformPosix_h
19#define __mDNSPlatformPosix_h
20
21#include <signal.h>
22#include <sys/time.h>
23
24#ifdef  __cplusplus
25extern "C" {
26#endif
27
28// PosixNetworkInterface is a record extension of the core NetworkInterfaceInfo
29// type that supports extra fields needed by the Posix platform.
30//
31// IMPORTANT: coreIntf must be the first field in the structure because
32// we cast between pointers to the two different types regularly.
33
34typedef struct PosixNetworkInterface PosixNetworkInterface;
35
36struct PosixNetworkInterface
37{
38    NetworkInterfaceInfo coreIntf;
39    const char *            intfName;
40    PosixNetworkInterface * aliasIntf;
41    int index;
42    int multicastSocket4;
43#if HAVE_IPV6
44    int multicastSocket6;
45#endif
46};
47
48// This is a global because debugf_() needs to be able to check its value
49extern int gMDNSPlatformPosixVerboseLevel;
50
51struct mDNS_PlatformSupport_struct
52{
53    int unicastSocket4;
54#if HAVE_IPV6
55    int unicastSocket6;
56#endif
57};
58
59#define uDNS_SERVERS_FILE "/etc/resolv.conf"
60extern int ParseDNSServers(mDNS *m, const char *filePath);
61extern mStatus mDNSPlatformPosixRefreshInterfaceList(mDNS *const m);
62// See comment in implementation.
63
64// Call mDNSPosixGetFDSet before calling select(), to update the parameters
65// as may be necessary to meet the needs of the mDNSCore code.
66// The timeout pointer MUST NOT be NULL.
67// Set timeout->tv_sec to 0x3FFFFFFF if you want to have effectively no timeout
68// After calling mDNSPosixGetFDSet(), call select(nfds, &readfds, NULL, NULL, &timeout); as usual
69// After select() returns, call mDNSPosixProcessFDSet() to let mDNSCore do its work
70extern void mDNSPosixGetFDSet(mDNS *m, int *nfds, fd_set *readfds, struct timeval *timeout);
71extern void mDNSPosixProcessFDSet(mDNS *const m, fd_set *readfds);
72
73typedef void (*mDNSPosixEventCallback)(int fd, short filter, void *context);
74
75extern mStatus mDNSPosixAddFDToEventLoop( int fd, mDNSPosixEventCallback callback, void *context);
76extern mStatus mDNSPosixRemoveFDFromEventLoop( int fd);
77extern mStatus mDNSPosixListenForSignalInEventLoop( int signum);
78extern mStatus mDNSPosixIgnoreSignalInEventLoop( int signum);
79extern mStatus mDNSPosixRunEventLoopOnce( mDNS *m, const struct timeval *pTimeout, sigset_t *pSignalsReceived, mDNSBool *pDataDispatched);
80
81#ifdef  __cplusplus
82}
83#endif
84
85#endif
86