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#ifdef __ANDROID__
24#include <sys/select.h>
25#endif
26
27#ifdef  __cplusplus
28    extern "C" {
29#endif
30
31// PosixNetworkInterface is a record extension of the core NetworkInterfaceInfo
32// type that supports extra fields needed by the Posix platform.
33//
34// IMPORTANT: coreIntf must be the first field in the structure because
35// we cast between pointers to the two different types regularly.
36
37typedef struct PosixNetworkInterface PosixNetworkInterface;
38
39struct PosixNetworkInterface
40	{
41	NetworkInterfaceInfo    coreIntf;
42	const char *            intfName;
43	PosixNetworkInterface * aliasIntf;
44	int                     index;
45	int                     multicastSocket4;
46#if HAVE_IPV6
47	int                     multicastSocket6;
48#endif
49	};
50
51// This is a global because debugf_() needs to be able to check its value
52extern int gMDNSPlatformPosixVerboseLevel;
53
54struct mDNS_PlatformSupport_struct
55	{
56	int unicastSocket4;
57#if HAVE_IPV6
58	int unicastSocket6;
59#endif
60	};
61
62#define uDNS_SERVERS_FILE "/etc/resolv.conf"
63extern int ParseDNSServers(mDNS *m, const char *filePath);
64extern mStatus mDNSPlatformPosixRefreshInterfaceList(mDNS *const m);
65    // See comment in implementation.
66
67// Call mDNSPosixGetFDSet before calling select(), to update the parameters
68// as may be necessary to meet the needs of the mDNSCore code.
69// The timeout pointer MUST NOT be NULL.
70// Set timeout->tv_sec to 0x3FFFFFFF if you want to have effectively no timeout
71// After calling mDNSPosixGetFDSet(), call select(nfds, &readfds, NULL, NULL, &timeout); as usual
72// After select() returns, call mDNSPosixProcessFDSet() to let mDNSCore do its work
73extern void mDNSPosixGetFDSet(mDNS *m, int *nfds, fd_set *readfds, struct timeval *timeout);
74extern void mDNSPosixProcessFDSet(mDNS *const m, fd_set *readfds);
75
76typedef	void (*mDNSPosixEventCallback)(int fd, short filter, void *context);
77
78extern mStatus mDNSPosixAddFDToEventLoop( int fd, mDNSPosixEventCallback callback, void *context);
79extern mStatus mDNSPosixRemoveFDFromEventLoop( int fd);
80extern mStatus mDNSPosixListenForSignalInEventLoop( int signum);
81extern mStatus mDNSPosixIgnoreSignalInEventLoop( int signum);
82extern mStatus mDNSPosixRunEventLoopOnce( mDNS *m, const struct timeval *pTimeout, sigset_t *pSignalsReceived, mDNSBool *pDataDispatched);
83
84#ifdef  __cplusplus
85    }
86#endif
87
88#endif
89