1 /* -*- Mode: C; tab-width: 4 -*-
3 * Copyright (c) 2002-2013, 2015 Apple Inc. All rights reserved.
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
9 * http://www.apache.org/licenses/LICENSE-2.0
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.
19 - Get unicode name of machine for nice name instead of just the host name.
20 - Use the IPv6 Internet Connection Firewall API to allow IPv6 mDNS without manually changing the firewall.
21 - Get DNS server address(es) from Windows and provide them to the uDNS layer.
22 - Implement TCP support for truncated packets (only stubs now).
36 #include "CommonServices.h"
37 #include "DebugServices.h"
49 #include <ntddndis.h> // This defines the IOCTL constants.
51 #include "mDNSEmbeddedAPI.h"
52 #include "GenLinkedList.h"
53 #include "DNSCommon.h"
54 #include "mDNSWin32.h"
59 #pragma mark == Constants ==
62 //===========================================================================================================================
64 //===========================================================================================================================
66 #define DEBUG_NAME "[mDNSWin32] "
68 #define MDNS_WINDOWS_USE_IPV6_IF_ADDRS 1
69 #define MDNS_WINDOWS_ENABLE_IPV4 1
70 #define MDNS_WINDOWS_ENABLE_IPV6 1
71 #define MDNS_FIX_IPHLPAPI_PREFIX_BUG 1
72 #define MDNS_SET_HINFO_STRINGS 0
74 #define kMDNSDefaultName "My Computer"
76 #define kWinSockMajorMin 2
77 #define kWinSockMinorMin 2
79 #define kRegistryMaxKeyLength 255
80 #define kRegistryMaxValueName 16383
82 static GUID kWSARecvMsgGUID = WSAID_WSARECVMSG;
84 #define kIPv6IfIndexBase (10000000L)
85 #define SMBPortAsNumber 445
86 #define DEVICE_PREFIX "\\\\.\\"
89 #pragma mark == Prototypes ==
92 //===========================================================================================================================
94 //===========================================================================================================================
96 mDNSlocal mStatus SetupNiceName( mDNS * const inMDNS );
97 mDNSlocal mStatus SetupHostName( mDNS * const inMDNS );
98 mDNSlocal mStatus SetupName( mDNS * const inMDNS );
99 mDNSlocal mStatus SetupInterface( mDNS * const inMDNS, const struct ifaddrs *inIFA, mDNSInterfaceData **outIFD );
100 mDNSlocal mStatus TearDownInterface( mDNS * const inMDNS, mDNSInterfaceData *inIFD );
101 mDNSlocal void CALLBACK FreeInterface( mDNSInterfaceData *inIFD );
102 mDNSlocal mStatus SetupSocket( mDNS * const inMDNS, const struct sockaddr *inAddr, mDNSIPPort port, SocketRef *outSocketRef );
103 mDNSlocal mStatus SockAddrToMDNSAddr( const struct sockaddr * const inSA, mDNSAddr *outIP, mDNSIPPort *outPort );
104 mDNSlocal OSStatus GetWindowsVersionString( char *inBuffer, size_t inBufferSize );
105 mDNSlocal int getifaddrs( struct ifaddrs **outAddrs );
106 mDNSlocal void freeifaddrs( struct ifaddrs *inAddrs );
109 // Platform Accessors
115 typedef struct mDNSPlatformInterfaceInfo mDNSPlatformInterfaceInfo;
116 struct mDNSPlatformInterfaceInfo
123 mDNSexport mStatus mDNSPlatformInterfaceNameToID( mDNS * const inMDNS, const char *inName, mDNSInterfaceID *outID );
124 mDNSexport mStatus mDNSPlatformInterfaceIDToInfo( mDNS * const inMDNS, mDNSInterfaceID inID, mDNSPlatformInterfaceInfo *outInfo );
129 #define kMulticastWakeupNumTries ( 18 )
130 #define kMulticastWakeupSleepBetweenTries ( 100 )
132 typedef struct MulticastWakeupStruct
135 struct sockaddr_in addr;
137 unsigned char data[ 102 ];
141 } MulticastWakeupStruct;
146 #if( MDNS_WINDOWS_USE_IPV6_IF_ADDRS )
147 mDNSlocal int getifaddrs_ipv6( struct ifaddrs **outAddrs );
150 mDNSlocal int getifaddrs_ipv4( struct ifaddrs **outAddrs );
152 mDNSlocal DWORD GetPrimaryInterface();
153 mDNSlocal mStatus AddressToIndexAndMask( struct sockaddr * address, uint32_t * index, struct sockaddr * mask );
154 mDNSlocal mDNSBool CanReceiveUnicast( void );
155 mDNSlocal mDNSBool IsPointToPoint( IP_ADAPTER_UNICAST_ADDRESS * addr );
157 mDNSlocal mStatus StringToAddress( mDNSAddr * ip, LPSTR string );
158 mDNSlocal mStatus RegQueryString( HKEY key, LPCSTR param, LPSTR * string, DWORD * stringLen, DWORD * enabled );
159 mDNSlocal struct ifaddrs* myGetIfAddrs(int refresh);
160 mDNSlocal OSStatus TCHARtoUTF8( const TCHAR *inString, char *inBuffer, size_t inBufferSize );
161 mDNSlocal OSStatus WindowsLatin1toUTF8( const char *inString, char *inBuffer, size_t inBufferSize );
162 mDNSlocal void CALLBACK TCPSocketNotification( SOCKET sock, LPWSANETWORKEVENTS event, void *context );
163 mDNSlocal void TCPCloseSocket( TCPSocket * socket );
164 mDNSlocal void CALLBACK UDPSocketNotification( SOCKET sock, LPWSANETWORKEVENTS event, void *context );
165 mDNSlocal void UDPCloseSocket( UDPSocket * sock );
166 mDNSlocal mStatus SetupAddr(mDNSAddr *ip, const struct sockaddr *const sa);
167 mDNSlocal void GetDDNSFQDN( domainname *const fqdn );
169 mDNSlocal void GetDDNSDomains( DNameListElem ** domains, LPCWSTR lpSubKey );
171 mDNSlocal void GetDDNSDomains( DNameListElem ** domains, LPCSTR lpSubKey );
173 mDNSlocal void SetDomainSecrets( mDNS * const inMDNS );
174 mDNSlocal void SetDomainSecret( mDNS * const m, const domainname * inDomain );
175 mDNSlocal VOID CALLBACK CheckFileSharesProc( LPVOID arg, DWORD dwTimerLowValue, DWORD dwTimerHighValue );
176 mDNSlocal void CheckFileShares( mDNS * const inMDNS );
177 mDNSlocal void SMBCallback(mDNS *const m, ServiceRecordSet *const srs, mStatus result);
178 mDNSlocal mDNSu8 IsWOMPEnabledForAdapter( const char * adapterName );
179 mDNSlocal void SendWakeupPacket( mDNS * const inMDNS, LPSOCKADDR addr, INT addrlen, const char * buf, INT buflen, INT numTries, INT msecSleep );
180 mDNSlocal void _cdecl SendMulticastWakeupPacket( void *arg );
187 #pragma mark == Globals ==
190 //===========================================================================================================================
192 //===========================================================================================================================
194 mDNSlocal mDNS_PlatformSupport gMDNSPlatformSupport;
195 mDNSs32 mDNSPlatformOneSecond = 0;
196 mDNSlocal UDPSocket * gUDPSockets = NULL;
197 mDNSlocal int gUDPNumSockets = 0;
198 mDNSlocal BOOL gEnableIPv6 = TRUE;
200 #if( MDNS_WINDOWS_USE_IPV6_IF_ADDRS )
203 ( WINAPI * GetAdaptersAddressesFunctionPtr )(
207 PIP_ADAPTER_ADDRESSES inAdapter,
208 PULONG outBufferSize );
210 mDNSlocal HMODULE gIPHelperLibraryInstance = NULL;
211 mDNSlocal GetAdaptersAddressesFunctionPtr gGetAdaptersAddressesFunctionPtr = NULL;
216 typedef ULONG_PTR HCRYPTPROV; // WinCrypt.h, line 249
219 #ifndef CRYPT_MACHINE_KEYSET
220 # define CRYPT_MACHINE_KEYSET 0x00000020
223 #ifndef CRYPT_NEWKEYSET
224 # define CRYPT_NEWKEYSET 0x00000008
227 #ifndef PROV_RSA_FULL
228 # define PROV_RSA_FULL 1
231 typedef BOOL (__stdcall *fnCryptGenRandom)( HCRYPTPROV, DWORD, BYTE* );
232 typedef BOOL (__stdcall *fnCryptAcquireContext)( HCRYPTPROV*, LPCTSTR, LPCTSTR, DWORD, DWORD);
233 typedef BOOL (__stdcall *fnCryptReleaseContext)(HCRYPTPROV, DWORD);
235 static fnCryptAcquireContext g_lpCryptAcquireContext = NULL;
236 static fnCryptReleaseContext g_lpCryptReleaseContext = NULL;
237 static fnCryptGenRandom g_lpCryptGenRandom = NULL;
238 static HINSTANCE g_hAAPI32 = NULL;
239 static HCRYPTPROV g_hProvider = ( ULONG_PTR ) NULL;
242 typedef DNSServiceErrorType ( DNSSD_API *DNSServiceRegisterFunc )
244 DNSServiceRef *sdRef,
245 DNSServiceFlags flags,
246 uint32_t interfaceIndex,
247 const char *name, /* may be NULL */
249 const char *domain, /* may be NULL */
250 const char *host, /* may be NULL */
253 const void *txtRecord, /* may be NULL */
254 DNSServiceRegisterReply callBack, /* may be NULL */
255 void *context /* may be NULL */
259 typedef void ( DNSSD_API *DNSServiceRefDeallocateFunc )( DNSServiceRef sdRef );
261 mDNSlocal HMODULE gDNSSDLibrary = NULL;
262 mDNSlocal DNSServiceRegisterFunc gDNSServiceRegister = NULL;
263 mDNSlocal DNSServiceRefDeallocateFunc gDNSServiceRefDeallocate = NULL;
264 mDNSlocal HANDLE gSMBThread = NULL;
265 mDNSlocal HANDLE gSMBThreadRegisterEvent = NULL;
266 mDNSlocal HANDLE gSMBThreadDeregisterEvent = NULL;
267 mDNSlocal HANDLE gSMBThreadStopEvent = NULL;
268 mDNSlocal HANDLE gSMBThreadQuitEvent = NULL;
270 #define kSMBStopEvent ( WAIT_OBJECT_0 + 0 )
271 #define kSMBRegisterEvent ( WAIT_OBJECT_0 + 1 )
272 #define kSMBDeregisterEvent ( WAIT_OBJECT_0 + 2 )
276 #pragma mark == Platform Support ==
279 //===========================================================================================================================
281 //===========================================================================================================================
283 mDNSexport mStatus mDNSPlatformInit( mDNS * const inMDNS )
286 OSVERSIONINFO osInfo;
290 struct sockaddr_in sa4;
291 struct sockaddr_in6 sa6;
296 dlog( kDebugLevelTrace, DEBUG_NAME "platform init\n" );
298 // Initialize variables. If the PlatformSupport pointer is not null then just assume that a non-Apple client is
299 // calling mDNS_Init and wants to provide its own storage for the platform-specific data so do not overwrite it.
301 mDNSPlatformMemZero( &gMDNSPlatformSupport, sizeof( gMDNSPlatformSupport ) );
302 if( !inMDNS->p ) inMDNS->p = &gMDNSPlatformSupport;
303 inMDNS->p->mainThread = OpenThread( THREAD_ALL_ACCESS, FALSE, GetCurrentThreadId() );
304 require_action( inMDNS->p->mainThread, exit, err = mStatus_UnknownErr );
305 inMDNS->p->checkFileSharesTimer = CreateWaitableTimer( NULL, FALSE, NULL );
306 require_action( inMDNS->p->checkFileSharesTimer, exit, err = mStatus_UnknownErr );
307 inMDNS->p->checkFileSharesTimeout = 10; // Retry time for CheckFileShares() in seconds
308 mDNSPlatformOneSecond = 1000; // Use milliseconds as the quantum of time
310 // Get OS version info
312 osInfo.dwOSVersionInfoSize = sizeof( OSVERSIONINFO );
313 ok = GetVersionEx( &osInfo );
314 err = translate_errno( ok, (OSStatus) GetLastError(), kUnknownErr );
315 require_noerr( err, exit );
316 inMDNS->p->osMajorVersion = osInfo.dwMajorVersion;
317 inMDNS->p->osMinorVersion = osInfo.dwMinorVersion;
319 // Don't enable IPv6 on anything less recent than Windows Vista
321 if ( inMDNS->p->osMajorVersion < 6 )
326 // Startup WinSock 2.2 or later.
328 err = WSAStartup( MAKEWORD( kWinSockMajorMin, kWinSockMinorMin ), &wsaData );
329 require_noerr( err, exit );
331 supported = ( ( LOBYTE( wsaData.wVersion ) == kWinSockMajorMin ) && ( HIBYTE( wsaData.wVersion ) == kWinSockMinorMin ) );
332 require_action( supported, exit, err = mStatus_UnsupportedErr );
334 inMDNS->CanReceiveUnicastOn5353 = CanReceiveUnicast();
336 // Setup the HINFO HW strings.
337 //<rdar://problem/7245119> device-info should have model=Windows
339 strcpy_s( ( char* ) &inMDNS->HIHardware.c[ 1 ], sizeof( inMDNS->HIHardware.c ) - 2, "Windows" );
340 inMDNS->HIHardware.c[ 0 ] = ( mDNSu8 ) mDNSPlatformStrLen( &inMDNS->HIHardware.c[ 1 ] );
341 dlog( kDebugLevelInfo, DEBUG_NAME "HIHardware: %#s\n", inMDNS->HIHardware.c );
343 // Setup the HINFO SW strings.
344 #if ( MDNS_SET_HINFO_STRINGS )
345 mDNS_snprintf( (char *) &inMDNS->HISoftware.c[ 1 ], sizeof( inMDNS->HISoftware.c ) - 2,
346 "mDNSResponder (%s %s)", __DATE__, __TIME__ );
347 inMDNS->HISoftware.c[ 0 ] = (mDNSu8) mDNSPlatformStrLen( &inMDNS->HISoftware.c[ 1 ] );
348 dlog( kDebugLevelInfo, DEBUG_NAME "HISoftware: %#s\n", inMDNS->HISoftware.c );
351 // Set up the IPv4 unicast socket
353 inMDNS->p->unicastSock4.fd = INVALID_SOCKET;
354 inMDNS->p->unicastSock4.recvMsgPtr = NULL;
355 inMDNS->p->unicastSock4.ifd = NULL;
356 inMDNS->p->unicastSock4.next = NULL;
357 inMDNS->p->unicastSock4.m = inMDNS;
359 #if ( MDNS_WINDOWS_ENABLE_IPV4 )
361 sa4.sin_family = AF_INET;
362 sa4.sin_addr.s_addr = INADDR_ANY;
363 err = SetupSocket( inMDNS, (const struct sockaddr*) &sa4, zeroIPPort, &inMDNS->p->unicastSock4.fd );
365 sa4len = sizeof( sa4 );
366 err = getsockname( inMDNS->p->unicastSock4.fd, (struct sockaddr*) &sa4, &sa4len );
367 require_noerr( err, exit );
368 inMDNS->p->unicastSock4.port.NotAnInteger = sa4.sin_port;
369 inMDNS->UnicastPort4 = inMDNS->p->unicastSock4.port;
370 err = WSAIoctl( inMDNS->p->unicastSock4.fd, SIO_GET_EXTENSION_FUNCTION_POINTER, &kWSARecvMsgGUID, sizeof( kWSARecvMsgGUID ), &inMDNS->p->unicastSock4.recvMsgPtr, sizeof( inMDNS->p->unicastSock4.recvMsgPtr ), &size, NULL, NULL );
374 inMDNS->p->unicastSock4.recvMsgPtr = NULL;
377 err = mDNSPollRegisterSocket( inMDNS->p->unicastSock4.fd, FD_READ, UDPSocketNotification, &inMDNS->p->unicastSock4 );
378 require_noerr( err, exit );
382 // Set up the IPv6 unicast socket
384 inMDNS->p->unicastSock6.fd = INVALID_SOCKET;
385 inMDNS->p->unicastSock6.recvMsgPtr = NULL;
386 inMDNS->p->unicastSock6.ifd = NULL;
387 inMDNS->p->unicastSock6.next = NULL;
388 inMDNS->p->unicastSock6.m = inMDNS;
390 #if ( MDNS_WINDOWS_ENABLE_IPV6 )
394 sa6.sin6_family = AF_INET6;
395 sa6.sin6_addr = in6addr_any;
396 sa6.sin6_scope_id = 0;
398 // This call will fail if the machine hasn't installed IPv6. In that case,
399 // the error will be WSAEAFNOSUPPORT.
401 err = SetupSocket( inMDNS, (const struct sockaddr*) &sa6, zeroIPPort, &inMDNS->p->unicastSock6.fd );
402 require_action( !err || ( err == WSAEAFNOSUPPORT ), exit, err = (mStatus) WSAGetLastError() );
405 // If we weren't able to create the socket (because IPv6 hasn't been installed) don't do this
407 if ( inMDNS->p->unicastSock6.fd != INVALID_SOCKET )
409 sa6len = sizeof( sa6 );
410 err = getsockname( inMDNS->p->unicastSock6.fd, (struct sockaddr*) &sa6, &sa6len );
411 require_noerr( err, exit );
412 inMDNS->p->unicastSock6.port.NotAnInteger = sa6.sin6_port;
413 inMDNS->UnicastPort6 = inMDNS->p->unicastSock6.port;
415 err = WSAIoctl( inMDNS->p->unicastSock6.fd, SIO_GET_EXTENSION_FUNCTION_POINTER, &kWSARecvMsgGUID, sizeof( kWSARecvMsgGUID ), &inMDNS->p->unicastSock6.recvMsgPtr, sizeof( inMDNS->p->unicastSock6.recvMsgPtr ), &size, NULL, NULL );
419 inMDNS->p->unicastSock6.recvMsgPtr = NULL;
422 err = mDNSPollRegisterSocket( inMDNS->p->unicastSock6.fd, FD_READ, UDPSocketNotification, &inMDNS->p->unicastSock6 );
423 require_noerr( err, exit );
429 // Notify core of domain secret keys
431 SetDomainSecrets( inMDNS );
435 mDNSCoreInitComplete( inMDNS, err );
442 mDNSPlatformClose( inMDNS );
445 dlog( kDebugLevelTrace, DEBUG_NAME "platform init done (err=%d %m)\n", err, err );
449 //===========================================================================================================================
451 //===========================================================================================================================
453 mDNSexport void mDNSPlatformClose( mDNS * const inMDNS )
457 dlog( kDebugLevelTrace, DEBUG_NAME "platform close\n" );
460 if ( gSMBThread != NULL )
462 dlog( kDebugLevelTrace, DEBUG_NAME "tearing down smb registration thread\n" );
463 SetEvent( gSMBThreadStopEvent );
465 if ( WaitForSingleObject( gSMBThreadQuitEvent, 5 * 1000 ) == WAIT_OBJECT_0 )
467 if ( gSMBThreadQuitEvent )
469 CloseHandle( gSMBThreadQuitEvent );
470 gSMBThreadQuitEvent = NULL;
473 if ( gSMBThreadStopEvent )
475 CloseHandle( gSMBThreadStopEvent );
476 gSMBThreadStopEvent = NULL;
479 if ( gSMBThreadDeregisterEvent )
481 CloseHandle( gSMBThreadDeregisterEvent );
482 gSMBThreadDeregisterEvent = NULL;
485 if ( gSMBThreadRegisterEvent )
487 CloseHandle( gSMBThreadRegisterEvent );
488 gSMBThreadRegisterEvent = NULL;
493 FreeLibrary( gDNSSDLibrary );
494 gDNSSDLibrary = NULL;
499 LogMsg( "Unable to stop SMBThread" );
502 inMDNS->p->smbFileSharing = mDNSfalse;
503 inMDNS->p->smbPrintSharing = mDNSfalse;
506 // Tear everything down in reverse order to how it was set up.
508 err = TearDownInterfaceList( inMDNS );
510 check( !inMDNS->p->inactiveInterfaceList );
512 #if ( MDNS_WINDOWS_ENABLE_IPV4 )
514 UDPCloseSocket( &inMDNS->p->unicastSock4 );
518 #if ( MDNS_WINDOWS_ENABLE_IPV6 )
522 UDPCloseSocket( &inMDNS->p->unicastSock6 );
527 // Free the DLL needed for IPv6 support.
529 #if( MDNS_WINDOWS_USE_IPV6_IF_ADDRS )
530 if( gIPHelperLibraryInstance )
532 gGetAdaptersAddressesFunctionPtr = NULL;
534 FreeLibrary( gIPHelperLibraryInstance );
535 gIPHelperLibraryInstance = NULL;
541 // Release any resources
543 if ( g_hProvider && g_lpCryptReleaseContext )
545 ( g_lpCryptReleaseContext )( g_hProvider, 0 );
548 // Free the AdvApi32.dll
550 FreeLibrary( g_hAAPI32 );
552 // And reset all the data
554 g_lpCryptAcquireContext = NULL;
555 g_lpCryptReleaseContext = NULL;
556 g_lpCryptGenRandom = NULL;
557 g_hProvider = ( ULONG_PTR ) NULL;
563 dlog( kDebugLevelTrace, DEBUG_NAME "platform close done\n" );
566 //===========================================================================================================================
568 //===========================================================================================================================
570 mDNSexport void mDNSPlatformLock( const mDNS * const inMDNS )
575 //===========================================================================================================================
576 // mDNSPlatformUnlock
577 //===========================================================================================================================
579 mDNSexport void mDNSPlatformUnlock( const mDNS * const inMDNS )
584 //===========================================================================================================================
585 // mDNSPlatformStrCopy
586 //===========================================================================================================================
588 mDNSexport void mDNSPlatformStrCopy( void *inDst, const void *inSrc )
593 strcpy( (char *) inDst, (const char*) inSrc );
596 //===========================================================================================================================
597 // mDNSPlatformStrLCopy
598 //===========================================================================================================================
600 mDNSexport mDNSu32 mDNSPlatformStrLCopy( void *inDst, const void *inSrc, mDNSu32 inSize )
602 const char * src = (const char *) inSrc;
607 char * dst = (char *) inDst;
609 for( n = inSize - 1; n > 0; --n )
611 if( ( *dst++ = *src++ ) == '\0' )
613 // Null terminator encountered, so exit.
620 while( *src++ != '\0' )
622 // Stop at null terminator.
626 return( (mDNSu32)( src - (const char *) inSrc ) - 1 );
629 //===========================================================================================================================
630 // mDNSPlatformStrLen
631 //===========================================================================================================================
633 mDNSexport mDNSu32 mDNSPlatformStrLen( const void *inSrc )
637 return( (mDNSu32) strlen( (const char *) inSrc ) );
640 //===========================================================================================================================
641 // mDNSPlatformMemCopy
642 //===========================================================================================================================
644 mDNSexport void mDNSPlatformMemCopy( void *inDst, const void *inSrc, mDNSu32 inSize )
649 memcpy( inDst, inSrc, inSize );
652 //===========================================================================================================================
653 // mDNSPlatformMemSame
654 //===========================================================================================================================
656 mDNSexport mDNSBool mDNSPlatformMemSame( const void *inDst, const void *inSrc, mDNSu32 inSize )
661 return( (mDNSBool)( memcmp( inSrc, inDst, inSize ) == 0 ) );
664 //===========================================================================================================================
665 // mDNSPlatformMemCmp
666 //===========================================================================================================================
668 mDNSexport int mDNSPlatformMemCmp( const void *inDst, const void *inSrc, mDNSu32 inSize )
673 return( memcmp( inSrc, inDst, inSize ) );
676 mDNSexport void mDNSPlatformQsort(void *base, int nel, int width, int (*compar)(const void *, const void *))
684 // DNSSEC stub functions
685 mDNSexport void VerifySignature(mDNS *const m, DNSSECVerifier *dv, DNSQuestion *q)
692 mDNSexport mDNSBool AddNSECSForCacheRecord(mDNS *const m, CacheRecord *crlist, CacheRecord *negcr, mDNSu8 rcode)
701 mDNSexport void BumpDNSSECStats(mDNS *const m, DNSSECStatsAction action, DNSSECStatsType type, mDNSu32 value)
709 // Proxy stub functions
710 mDNSexport mDNSu8 *DNSProxySetAttributes(DNSQuestion *q, DNSMessageHeader *h, DNSMessage *msg, mDNSu8 *ptr, mDNSu8 *limit)
721 mDNSexport void DNSProxyInit(mDNS *const m, mDNSu32 IpIfArr[], mDNSu32 OpIf)
728 mDNSexport void DNSProxyTerminate(mDNS *const m)
733 //===========================================================================================================================
734 // mDNSPlatformMemZero
735 //===========================================================================================================================
737 mDNSexport void mDNSPlatformMemZero( void *inDst, mDNSu32 inSize )
741 memset( inDst, 0, inSize );
744 //===========================================================================================================================
745 // mDNSPlatformMemAllocate
746 //===========================================================================================================================
748 mDNSexport void * mDNSPlatformMemAllocate( mDNSu32 inSize )
754 mem = malloc( inSize );
760 //===========================================================================================================================
761 // mDNSPlatformMemFree
762 //===========================================================================================================================
764 mDNSexport void mDNSPlatformMemFree( void *inMem )
771 //===========================================================================================================================
772 // mDNSPlatformRandomNumber
773 //===========================================================================================================================
775 mDNSexport mDNSu32 mDNSPlatformRandomNumber(void)
777 unsigned int randomNumber;
780 err = rand_s( &randomNumber );
781 require_noerr( err, exit );
787 randomNumber = rand();
790 return ( mDNSu32 ) randomNumber;
793 //===========================================================================================================================
794 // mDNSPlatformTimeInit
795 //===========================================================================================================================
797 mDNSexport mStatus mDNSPlatformTimeInit( void )
799 // No special setup is required on Windows -- we just use GetTickCount().
800 return( mStatus_NoError );
803 //===========================================================================================================================
804 // mDNSPlatformRawTime
805 //===========================================================================================================================
807 mDNSexport mDNSs32 mDNSPlatformRawTime( void )
809 return( (mDNSs32) GetTickCount() );
812 //===========================================================================================================================
814 //===========================================================================================================================
816 mDNSexport mDNSs32 mDNSPlatformUTC( void )
818 return ( mDNSs32 ) time( NULL );
821 //===========================================================================================================================
822 // mDNSPlatformInterfaceNameToID
823 //===========================================================================================================================
825 mDNSexport mStatus mDNSPlatformInterfaceNameToID( mDNS * const inMDNS, const char *inName, mDNSInterfaceID *outID )
828 mDNSInterfaceData * ifd;
834 // Search for an interface with the specified name,
836 for( ifd = inMDNS->p->interfaceList; ifd; ifd = ifd->next )
838 if( strcmp( ifd->name, inName ) == 0 )
843 require_action_quiet( ifd, exit, err = mStatus_NoSuchNameErr );
849 *outID = (mDNSInterfaceID) ifd;
851 err = mStatus_NoError;
857 //===========================================================================================================================
858 // mDNSPlatformInterfaceIDToInfo
859 //===========================================================================================================================
861 mDNSexport mStatus mDNSPlatformInterfaceIDToInfo( mDNS * const inMDNS, mDNSInterfaceID inID, mDNSPlatformInterfaceInfo *outInfo )
864 mDNSInterfaceData * ifd;
870 // Search for an interface with the specified ID,
872 for( ifd = inMDNS->p->interfaceList; ifd; ifd = ifd->next )
874 if( ifd == (mDNSInterfaceData *) inID )
879 require_action_quiet( ifd, exit, err = mStatus_NoSuchNameErr );
883 outInfo->name = ifd->name;
884 outInfo->ip = ifd->interfaceInfo.ip;
885 err = mStatus_NoError;
891 //===========================================================================================================================
892 // mDNSPlatformInterfaceIDfromInterfaceIndex
893 //===========================================================================================================================
895 mDNSexport mDNSInterfaceID mDNSPlatformInterfaceIDfromInterfaceIndex( mDNS * const inMDNS, mDNSu32 inIndex )
900 if( inIndex == kDNSServiceInterfaceIndexLocalOnly )
902 id = mDNSInterface_LocalOnly;
904 else if( inIndex != 0 )
906 mDNSInterfaceData * ifd;
908 for( ifd = inMDNS->p->interfaceList; ifd; ifd = ifd->next )
910 if( ( ifd->scopeID == inIndex ) && ifd->interfaceInfo.InterfaceActive )
912 id = ifd->interfaceInfo.InterfaceID;
921 //===========================================================================================================================
922 // mDNSPlatformInterfaceIndexfromInterfaceID
923 //===========================================================================================================================
925 mDNSexport mDNSu32 mDNSPlatformInterfaceIndexfromInterfaceID( mDNS * const inMDNS, mDNSInterfaceID inID, mDNSBool suppressNetworkChange )
929 (void) suppressNetworkChange;
932 if( inID == mDNSInterface_LocalOnly )
934 index = (mDNSu32) kDNSServiceInterfaceIndexLocalOnly;
938 mDNSInterfaceData * ifd;
940 // Search active interfaces.
941 for( ifd = inMDNS->p->interfaceList; ifd; ifd = ifd->next )
943 if( (mDNSInterfaceID) ifd == inID )
945 index = ifd->scopeID;
950 // Search inactive interfaces too so remove events for inactive interfaces report the old interface index.
954 for( ifd = inMDNS->p->inactiveInterfaceList; ifd; ifd = ifd->next )
956 if( (mDNSInterfaceID) ifd == inID )
958 index = ifd->scopeID;
968 //===========================================================================================================================
969 // mDNSPlatformTCPSocket
970 //===========================================================================================================================
973 mDNSPlatformTCPSocket
976 TCPSocketFlags flags,
978 mDNSBool useBackgroundTrafficClass
981 TCPSocket * sock = NULL;
982 u_long on = 1; // "on" for setsockopt
983 struct sockaddr_in saddr;
985 mStatus err = mStatus_NoError;
988 DEBUG_UNUSED( useBackgroundTrafficClass );
990 require_action( flags == 0, exit, err = mStatus_UnsupportedErr );
992 // Setup connection data object
994 sock = (TCPSocket *) malloc( sizeof( TCPSocket ) );
995 require_action( sock, exit, err = mStatus_NoMemoryErr );
996 mDNSPlatformMemZero( sock, sizeof( TCPSocket ) );
997 sock->fd = INVALID_SOCKET;
1001 mDNSPlatformMemZero(&saddr, sizeof(saddr));
1002 saddr.sin_family = AF_INET;
1003 saddr.sin_addr.s_addr = htonl( INADDR_ANY );
1004 saddr.sin_port = port->NotAnInteger;
1006 // Create the socket
1008 sock->fd = socket(AF_INET, SOCK_STREAM, 0);
1009 err = translate_errno( sock->fd != INVALID_SOCKET, WSAGetLastError(), mStatus_UnknownErr );
1010 require_noerr( err, exit );
1014 err = bind( sock->fd, ( struct sockaddr* ) &saddr, sizeof( saddr ) );
1015 err = translate_errno( err == 0, WSAGetLastError(), mStatus_UnknownErr );
1016 require_noerr( err, exit );
1018 // Set it to be non-blocking
1020 err = ioctlsocket( sock->fd, FIONBIO, &on );
1021 err = translate_errno( err == 0, WSAGetLastError(), mStatus_UnknownErr );
1022 require_noerr( err, exit );
1026 mDNSPlatformMemZero( &saddr, sizeof( saddr ) );
1027 len = sizeof( saddr );
1029 err = getsockname( sock->fd, ( struct sockaddr* ) &saddr, &len );
1030 err = translate_errno( err == 0, WSAGetLastError(), mStatus_UnknownErr );
1031 require_noerr( err, exit );
1033 port->NotAnInteger = saddr.sin_port;
1039 TCPCloseSocket( sock );
1047 //===========================================================================================================================
1048 // mDNSPlatformTCPConnect
1049 //===========================================================================================================================
1052 mDNSPlatformTCPConnect
1055 const mDNSAddr * inDstIP,
1056 mDNSOpaque16 inDstPort,
1057 domainname * hostname,
1058 mDNSInterfaceID inInterfaceID,
1059 TCPConnectionCallback inCallback,
1063 struct sockaddr_in saddr;
1064 mStatus err = mStatus_NoError;
1066 DEBUG_UNUSED( hostname );
1067 DEBUG_UNUSED( inInterfaceID );
1069 if ( inDstIP->type != mDNSAddrType_IPv4 )
1071 LogMsg("ERROR: mDNSPlatformTCPConnect - attempt to connect to an IPv6 address: operation not supported");
1072 return mStatus_UnknownErr;
1075 // Setup connection data object
1077 sock->userCallback = inCallback;
1078 sock->userContext = inContext;
1080 mDNSPlatformMemZero(&saddr, sizeof(saddr));
1081 saddr.sin_family = AF_INET;
1082 saddr.sin_port = inDstPort.NotAnInteger;
1083 memcpy(&saddr.sin_addr, &inDstIP->ip.v4.NotAnInteger, sizeof(saddr.sin_addr));
1085 // Try and do connect
1087 err = connect( sock->fd, ( struct sockaddr* ) &saddr, sizeof( saddr ) );
1088 require_action( !err || ( WSAGetLastError() == WSAEWOULDBLOCK ), exit, err = mStatus_ConnFailed );
1089 sock->connected = !err ? TRUE : FALSE;
1091 err = mDNSPollRegisterSocket( sock->fd, FD_CONNECT | FD_READ | FD_CLOSE, TCPSocketNotification, sock );
1092 require_noerr( err, exit );
1098 err = sock->connected ? mStatus_ConnEstablished : mStatus_ConnPending;
1104 //===========================================================================================================================
1105 // mDNSPlatformTCPAccept
1106 //===========================================================================================================================
1108 mDNSexport TCPSocket *mDNSPlatformTCPAccept( TCPSocketFlags flags, int fd )
1110 TCPSocket * sock = NULL;
1111 mStatus err = mStatus_NoError;
1113 require_action( !flags, exit, err = mStatus_UnsupportedErr );
1115 sock = malloc( sizeof( TCPSocket ) );
1116 require_action( sock, exit, err = mStatus_NoMemoryErr );
1118 mDNSPlatformMemZero( sock, sizeof( *sock ) );
1121 sock->flags = flags;
1134 //===========================================================================================================================
1135 // mDNSPlatformTCPCloseConnection
1136 //===========================================================================================================================
1138 mDNSexport void mDNSPlatformTCPCloseConnection( TCPSocket *sock )
1144 dlog( kDebugLevelChatty, DEBUG_NAME "mDNSPlatformTCPCloseConnection 0x%x:%d\n", sock, sock->fd );
1146 if ( sock->fd != INVALID_SOCKET )
1148 mDNSPollUnregisterSocket( sock->fd );
1149 closesocket( sock->fd );
1150 sock->fd = INVALID_SOCKET;
1157 //===========================================================================================================================
1158 // mDNSPlatformReadTCP
1159 //===========================================================================================================================
1161 mDNSexport long mDNSPlatformReadTCP( TCPSocket *sock, void *inBuffer, unsigned long inBufferSize, mDNSBool * closed )
1166 *closed = mDNSfalse;
1167 nread = recv( sock->fd, inBuffer, inBufferSize, 0 );
1168 err = translate_errno( ( nread >= 0 ), WSAGetLastError(), mStatus_UnknownErr );
1172 dlog( kDebugLevelChatty, DEBUG_NAME "mDNSPlatformReadTCP: 0x%x:%d read %d bytes\n", sock, sock->fd, nread );
1178 else if ( err == WSAECONNRESET )
1183 else if ( err == WSAEWOULDBLOCK )
1189 LogMsg( "ERROR: mDNSPlatformReadTCP - recv: %d\n", err );
1196 //===========================================================================================================================
1197 // mDNSPlatformWriteTCP
1198 //===========================================================================================================================
1200 mDNSexport long mDNSPlatformWriteTCP( TCPSocket *sock, const char *inMsg, unsigned long inMsgSize )
1205 nsent = send( sock->fd, inMsg, inMsgSize, 0 );
1207 err = translate_errno( ( nsent >= 0 ) || ( WSAGetLastError() == WSAEWOULDBLOCK ), WSAGetLastError(), mStatus_UnknownErr );
1208 require_noerr( err, exit );
1220 //===========================================================================================================================
1221 // mDNSPlatformTCPGetFD
1222 //===========================================================================================================================
1224 mDNSexport int mDNSPlatformTCPGetFD(TCPSocket *sock )
1226 return ( int ) sock->fd;
1229 //===========================================================================================================================
1230 // TCPSocketNotification
1231 //===========================================================================================================================
1233 mDNSlocal void CALLBACK
1234 TCPSocketNotification( SOCKET sock, LPWSANETWORKEVENTS event, void *context )
1236 TCPSocket *tcpSock = ( TCPSocket* ) context;
1237 TCPConnectionCallback callback;
1240 DEBUG_UNUSED( sock );
1242 require_action( tcpSock, exit, err = mStatus_BadParamErr );
1243 callback = ( TCPConnectionCallback ) tcpSock->userCallback;
1244 require_action( callback, exit, err = mStatus_BadParamErr );
1246 if ( event && ( event->lNetworkEvents & FD_CONNECT ) )
1248 if ( event->iErrorCode[ FD_CONNECT_BIT ] == 0 )
1250 callback( tcpSock, tcpSock->userContext, mDNStrue, 0 );
1251 tcpSock->connected = mDNStrue;
1255 callback( tcpSock, tcpSock->userContext, mDNSfalse, event->iErrorCode[ FD_CONNECT_BIT ] );
1260 callback( tcpSock, tcpSock->userContext, mDNSfalse, 0 );
1268 //===========================================================================================================================
1269 // mDNSPlatformUDPSocket
1270 //===========================================================================================================================
1272 mDNSexport UDPSocket* mDNSPlatformUDPSocket(mDNS *const m, const mDNSIPPort requestedport)
1274 UDPSocket* sock = NULL;
1275 mDNSIPPort port = requestedport;
1276 mStatus err = mStatus_NoError;
1279 // Setup connection data object
1281 sock = ( UDPSocket* ) malloc(sizeof( UDPSocket ) );
1282 require_action( sock, exit, err = mStatus_NoMemoryErr );
1283 memset( sock, 0, sizeof( UDPSocket ) );
1285 // Create the socket
1287 sock->fd = INVALID_SOCKET;
1288 sock->recvMsgPtr = m->p->unicastSock4.recvMsgPtr;
1289 sock->addr = m->p->unicastSock4.addr;
1293 // Try at most 10000 times to get a unique random port
1295 for (i=0; i<10000; i++)
1297 struct sockaddr_in saddr;
1299 saddr.sin_family = AF_INET;
1300 saddr.sin_addr.s_addr = 0;
1302 // The kernel doesn't do cryptographically strong random port
1303 // allocation, so we do it ourselves here
1305 if (mDNSIPPortIsZero(requestedport))
1307 port = mDNSOpaque16fromIntVal( ( mDNSu16 ) ( 0xC000 + mDNSRandom(0x3FFF) ) );
1310 saddr.sin_port = port.NotAnInteger;
1312 err = SetupSocket(m, ( struct sockaddr* ) &saddr, port, &sock->fd );
1316 require_noerr( err, exit );
1322 // Arm the completion routine
1324 err = mDNSPollRegisterSocket( sock->fd, FD_READ, UDPSocketNotification, sock );
1325 require_noerr( err, exit );
1329 sock->next = gUDPSockets;
1337 UDPCloseSocket( sock );
1345 //===========================================================================================================================
1346 // mDNSPlatformUDPClose
1347 //===========================================================================================================================
1349 mDNSexport void mDNSPlatformUDPClose( UDPSocket *sock )
1351 UDPSocket * current = gUDPSockets;
1352 UDPSocket * last = NULL;
1356 if ( current == sock )
1360 gUDPSockets = sock->next;
1364 last->next = sock->next;
1367 UDPCloseSocket( sock );
1376 current = current->next;
1380 //===========================================================================================================================
1381 // mDNSPlatformSendUDP
1382 //===========================================================================================================================
1385 mDNSPlatformSendUDP(
1386 const mDNS * const inMDNS,
1387 const void * const inMsg,
1388 const mDNSu8 * const inMsgEnd,
1389 mDNSInterfaceID inInterfaceID,
1390 UDPSocket * inSrcSocket,
1391 const mDNSAddr * inDstIP,
1392 mDNSIPPort inDstPort,
1393 mDNSBool useBackgroundTrafficClass )
1395 SOCKET sendingsocket = INVALID_SOCKET;
1396 mStatus err = mStatus_NoError;
1397 mDNSInterfaceData * ifd = (mDNSInterfaceData*) inInterfaceID;
1398 struct sockaddr_storage addr;
1401 DEBUG_USE_ONLY( inMDNS );
1402 DEBUG_USE_ONLY( useBackgroundTrafficClass );
1404 n = (int)( inMsgEnd - ( (const mDNSu8 * const) inMsg ) );
1410 dlog( kDebugLevelChatty, DEBUG_NAME "platform send %d bytes to %#a:%u\n", n, inDstIP, ntohs( inDstPort.NotAnInteger ) );
1412 if( inDstIP->type == mDNSAddrType_IPv4 )
1414 struct sockaddr_in * sa4;
1416 sa4 = (struct sockaddr_in *) &addr;
1417 sa4->sin_family = AF_INET;
1418 sa4->sin_port = inDstPort.NotAnInteger;
1419 sa4->sin_addr.s_addr = inDstIP->ip.v4.NotAnInteger;
1420 sendingsocket = ifd ? ifd->sock.fd : inMDNS->p->unicastSock4.fd;
1422 if (inSrcSocket) { sendingsocket = inSrcSocket->fd; debugf("mDNSPlatformSendUDP using port %d, static port %d, sock %d", mDNSVal16(inSrcSocket->port), inMDNS->p->unicastSock4.fd, sendingsocket); }
1424 else if( inDstIP->type == mDNSAddrType_IPv6 )
1426 struct sockaddr_in6 * sa6;
1428 sa6 = (struct sockaddr_in6 *) &addr;
1429 sa6->sin6_family = AF_INET6;
1430 sa6->sin6_port = inDstPort.NotAnInteger;
1431 sa6->sin6_flowinfo = 0;
1432 sa6->sin6_addr = *( (struct in6_addr *) &inDstIP->ip.v6 );
1433 sa6->sin6_scope_id = 0; // Windows requires the scope ID to be zero. IPV6_MULTICAST_IF specifies interface.
1434 sendingsocket = ifd ? ifd->sock.fd : inMDNS->p->unicastSock6.fd;
1438 dlog( kDebugLevelError, DEBUG_NAME "%s: dst is not an IPv4 or IPv6 address (type=%d)\n", __ROUTINE__, inDstIP->type );
1439 err = mStatus_BadParamErr;
1443 if (IsValidSocket(sendingsocket))
1445 n = sendto( sendingsocket, (char *) inMsg, n, 0, (struct sockaddr *) &addr, sizeof( addr ) );
1446 err = translate_errno( n > 0, errno_compat(), kWriteErr );
1450 // Don't report EHOSTDOWN (i.e. ARP failure), ENETDOWN, or no route to host for unicast destinations
1452 if ( !mDNSAddressIsAllDNSLinkGroup( inDstIP ) && ( WSAGetLastError() == WSAEHOSTDOWN || WSAGetLastError() == WSAENETDOWN || WSAGetLastError() == WSAEHOSTUNREACH || WSAGetLastError() == WSAENETUNREACH ) )
1454 err = mStatus_TransientErr;
1458 require_noerr( err, exit );
1467 mDNSexport void mDNSPlatformUpdateProxyList(mDNS *const m, const mDNSInterfaceID InterfaceID)
1470 DEBUG_UNUSED( InterfaceID );
1473 mDNSexport void mDNSPlatformSetAllowSleep(mDNS *const m, mDNSBool allowSleep, const char *reason)
1476 DEBUG_UNUSED( allowSleep );
1477 DEBUG_UNUSED( reason );
1480 //===========================================================================================================================
1481 // mDNSPlatformSendRawPacket
1482 //===========================================================================================================================
1484 mDNSexport void mDNSPlatformSendWakeupPacket(mDNS *const m, mDNSInterfaceID InterfaceID, char *ethaddr, char *ipaddr, int iteration)
1486 unsigned char mac[ 6 ];
1487 unsigned char buf[ 102 ];
1488 char hex[ 3 ] = { 0 };
1489 unsigned char *bufPtr = buf;
1490 MulticastWakeupStruct *info;
1494 (void) InterfaceID; // unused
1495 (void) ipaddr; // unused
1496 (void) iteration; // unused
1498 require_action( ethaddr, exit, err = mStatus_BadParamErr );
1500 for ( i = 0; i < 6; i++ )
1502 memcpy( hex, ethaddr + ( i * 3 ), 2 );
1503 mac[ i ] = ( unsigned char ) strtoul( hex, NULL, 16 );
1506 memset( buf, 0, sizeof( buf ) );
1508 for ( i = 0; i < 6; i++ )
1513 for ( i = 0; i < 16; i++ )
1515 memcpy( bufPtr, mac, sizeof( mac ) );
1516 bufPtr += sizeof( mac );
1519 info = ( MulticastWakeupStruct* ) malloc( sizeof( MulticastWakeupStruct ) );
1520 require_action( info, exit, err = mStatus_NoMemoryErr );
1522 memset( &info->addr, 0, sizeof( info->addr ) );
1523 info->addr.sin_family = AF_INET;
1524 info->addr.sin_addr.s_addr = AllDNSLinkGroup_v4.ip.v4.NotAnInteger;
1525 info->addr.sin_port = htons( 9 );
1526 info->addrLen = sizeof( info->addr );
1527 memcpy( info->data, buf, sizeof( buf ) );
1528 info->dataLen = sizeof( buf );
1529 info->numTries = kMulticastWakeupNumTries;
1530 info->msecSleep = kMulticastWakeupSleepBetweenTries;
1532 _beginthread( SendMulticastWakeupPacket, 0, ( void* ) info );
1539 mDNSexport mDNSBool mDNSPlatformValidRecordForInterface(const AuthRecord *rr, mDNSInterfaceID InterfaceID)
1542 DEBUG_UNUSED( InterfaceID );
1547 mDNSexport mDNSBool mDNSPlatformValidQuestionForInterface(DNSQuestion *q, const NetworkInterfaceInfo *intf)
1550 DEBUG_UNUSED( intf );
1555 mDNSexport void mDNSPlatformSendRawPacket(const void *const msg, const mDNSu8 *const end, mDNSInterfaceID InterfaceID)
1557 DEBUG_UNUSED( msg );
1558 DEBUG_UNUSED( end );
1559 DEBUG_UNUSED( InterfaceID );
1562 // Used for debugging purposes. For now, just set the buffer to zero
1563 mDNSexport void mDNSPlatformFormatTime(unsigned long te, mDNSu8 *buf, int bufsize)
1566 if (bufsize) buf[0] = 0;
1569 mDNSexport void mDNSPlatformSetLocalAddressCacheEntry(mDNS *const m, const mDNSAddr *const tpa, const mDNSEthAddr *const tha, mDNSInterfaceID InterfaceID)
1572 DEBUG_UNUSED( tpa );
1573 DEBUG_UNUSED( tha );
1574 DEBUG_UNUSED( InterfaceID );
1577 mDNSexport void mDNSPlatformReceiveRawPacket(const void *const msg, const mDNSu8 *const end, mDNSInterfaceID InterfaceID)
1579 DEBUG_UNUSED( msg );
1580 DEBUG_UNUSED( end );
1581 DEBUG_UNUSED( InterfaceID );
1584 mDNSexport void mDNSPlatformSetLocalARP( const mDNSv4Addr * const tpa, const mDNSEthAddr * const tha, mDNSInterfaceID InterfaceID )
1586 DEBUG_UNUSED( tpa );
1587 DEBUG_UNUSED( tha );
1588 DEBUG_UNUSED( InterfaceID );
1591 mDNSexport void mDNSPlatformWriteDebugMsg(const char *msg)
1593 dlog( kDebugLevelInfo, "%s\n", msg );
1596 mDNSexport void mDNSPlatformWriteLogMsg( const char * ident, const char * msg, mDNSLogLevel_t loglevel )
1598 extern mDNS mDNSStorage;
1601 DEBUG_UNUSED( ident );
1603 type = EVENTLOG_ERROR_TYPE;
1607 case MDNS_LOG_MSG: type = EVENTLOG_ERROR_TYPE; break;
1608 case MDNS_LOG_OPERATION: type = EVENTLOG_WARNING_TYPE; break;
1609 case MDNS_LOG_SPS: type = EVENTLOG_INFORMATION_TYPE; break;
1610 case MDNS_LOG_INFO: type = EVENTLOG_INFORMATION_TYPE; break;
1611 case MDNS_LOG_DEBUG: type = EVENTLOG_INFORMATION_TYPE; break;
1613 fprintf(stderr, "Unknown loglevel %d, assuming LOG_ERR\n", loglevel);
1617 mDNSStorage.p->reportStatusFunc( type, msg );
1618 dlog( kDebugLevelInfo, "%s\n", msg );
1621 mDNSexport void mDNSPlatformSourceAddrForDest( mDNSAddr * const src, const mDNSAddr * const dst )
1623 DEBUG_UNUSED( src );
1624 DEBUG_UNUSED( dst );
1627 //===========================================================================================================================
1628 // mDNSPlatformTLSSetupCerts
1629 //===========================================================================================================================
1632 mDNSPlatformTLSSetupCerts(void)
1634 return mStatus_UnsupportedErr;
1637 //===========================================================================================================================
1638 // mDNSPlatformTLSTearDownCerts
1639 //===========================================================================================================================
1642 mDNSPlatformTLSTearDownCerts(void)
1646 //===========================================================================================================================
1647 // mDNSPlatformSetDNSConfig
1648 //===========================================================================================================================
1650 mDNSlocal void SetDNSServers( mDNS *const m );
1651 mDNSlocal void SetSearchDomainList( void );
1653 mDNSexport mDNSBool mDNSPlatformSetDNSConfig(mDNS *const m, mDNSBool setservers, mDNSBool setsearch, domainname *const fqdn, DNameListElem **regDomains, DNameListElem **browseDomains, mDNSBool ackConfig)
1657 if (setservers) SetDNSServers(m);
1658 if (setsearch) SetSearchDomainList();
1662 GetDDNSFQDN( fqdn );
1665 if ( browseDomains )
1667 GetDDNSDomains( browseDomains, kServiceParametersNode TEXT("\\DynDNS\\Setup\\") kServiceDynDNSBrowseDomains );
1672 GetDDNSDomains( regDomains, kServiceParametersNode TEXT("\\DynDNS\\Setup\\") kServiceDynDNSRegistrationDomains );
1677 //===========================================================================================================================
1678 // mDNSPlatformDynDNSHostNameStatusChanged
1679 //===========================================================================================================================
1682 mDNSPlatformDynDNSHostNameStatusChanged(const domainname *const dname, const mStatus status)
1684 char uname[MAX_ESCAPED_DOMAIN_NAME];
1691 ConvertDomainNameToCString(dname, uname);
1697 *p = (char) tolower(*p);
1698 if (!(*(p+1)) && *p == '.') *p = 0; // if last character, strip trailing dot
1702 check( strlen( p ) <= MAX_ESCAPED_DOMAIN_NAME );
1703 name = kServiceParametersNode TEXT("\\DynDNS\\State\\HostNames");
1704 err = RegCreateKey( HKEY_LOCAL_MACHINE, name, &key );
1705 require_noerr( err, exit );
1707 bStatus = ( status ) ? 0 : 1;
1708 err = RegSetValueEx( key, kServiceDynDNSStatus, 0, REG_DWORD, (const LPBYTE) &bStatus, sizeof(DWORD) );
1709 require_noerr( err, exit );
1721 //===========================================================================================================================
1723 //===========================================================================================================================
1725 // This routine needs to be called whenever the system secrets database changes.
1726 // We call it from DynDNSConfigDidChange and mDNSPlatformInit
1729 SetDomainSecrets( mDNS * const m )
1731 DomainAuthInfo *ptr;
1733 DNameListElem * regDomains = NULL;
1735 // Rather than immediately deleting all keys now, we mark them for deletion in ten seconds.
1736 // In the case where the user simultaneously removes their DDNS host name and the key
1737 // for it, this gives mDNSResponder ten seconds to gracefully delete the name from the
1738 // server before it loses access to the necessary key. Otherwise, we'd leave orphaned
1739 // address records behind that we no longer have permission to delete.
1741 for (ptr = m->AuthInfoList; ptr; ptr = ptr->next)
1742 ptr->deltime = NonZeroTime(m->timenow + mDNSPlatformOneSecond*10);
1744 GetDDNSFQDN( &fqdn );
1748 SetDomainSecret( m, &fqdn );
1751 GetDDNSDomains( ®Domains, kServiceParametersNode TEXT("\\DynDNS\\Setup\\") kServiceDynDNSRegistrationDomains );
1753 while ( regDomains )
1755 DNameListElem * current = regDomains;
1756 SetDomainSecret( m, ¤t->name );
1757 regDomains = regDomains->next;
1762 //===========================================================================================================================
1763 // SetSearchDomainList
1764 //===========================================================================================================================
1766 mDNSlocal void SetDomainFromDHCP( void );
1767 mDNSlocal void SetReverseMapSearchDomainList( void );
1770 SetSearchDomainList( void )
1772 char * searchList = NULL;
1773 DWORD searchListLen;
1774 //DNameListElem * head = NULL;
1775 //DNameListElem * current = NULL;
1780 err = RegCreateKey( HKEY_LOCAL_MACHINE, TEXT("SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters"), &key );
1781 require_noerr( err, exit );
1783 err = RegQueryString( key, "SearchList", &searchList, &searchListLen, NULL );
1784 require_noerr( err, exit );
1786 // Windows separates the search domains with ','
1788 tok = strtok( searchList, "," );
1791 if ( ( strcmp( tok, "" ) != 0 ) && ( strcmp( tok, "." ) != 0 ) )
1792 mDNS_AddSearchDomain_CString(tok, mDNSNULL);
1793 tok = strtok( NULL, "," );
1808 SetDomainFromDHCP();
1809 SetReverseMapSearchDomainList();
1812 //===========================================================================================================================
1813 // SetReverseMapSearchDomainList
1814 //===========================================================================================================================
1817 SetReverseMapSearchDomainList( void )
1819 struct ifaddrs * ifa;
1821 ifa = myGetIfAddrs( 1 );
1826 if (ifa->ifa_addr->sa_family == AF_INET && !SetupAddr(&addr, ifa->ifa_addr) && !(ifa->ifa_flags & IFF_LOOPBACK) && ifa->ifa_netmask)
1831 if (!SetupAddr(&netmask, ifa->ifa_netmask))
1833 _snprintf(buffer, sizeof( buffer ), "%d.%d.%d.%d.in-addr.arpa.", addr.ip.v4.b[3] & netmask.ip.v4.b[3],
1834 addr.ip.v4.b[2] & netmask.ip.v4.b[2],
1835 addr.ip.v4.b[1] & netmask.ip.v4.b[1],
1836 addr.ip.v4.b[0] & netmask.ip.v4.b[0]);
1837 mDNS_AddSearchDomain_CString(buffer, mDNSNULL);
1841 ifa = ifa->ifa_next;
1847 //===========================================================================================================================
1849 //===========================================================================================================================
1852 SetDNSServers( mDNS *const m )
1854 PIP_PER_ADAPTER_INFO pAdapterInfo = NULL;
1855 FIXED_INFO * fixedInfo = NULL;
1857 IP_ADDR_STRING * dnsServerList;
1858 IP_ADDR_STRING * ipAddr;
1861 mStatus err = kUnknownErr;
1863 // Get the primary interface.
1865 index = GetPrimaryInterface();
1867 // This should have the interface index of the primary index. Fall back in cases where
1868 // it can't be determined.
1874 for ( i = 0; i < 100; i++ )
1876 err = GetPerAdapterInfo( index, pAdapterInfo, &bufLen );
1878 if ( err != ERROR_BUFFER_OVERFLOW )
1883 pAdapterInfo = (PIP_PER_ADAPTER_INFO) realloc( pAdapterInfo, bufLen );
1884 require_action( pAdapterInfo, exit, err = mStatus_NoMemoryErr );
1887 require_noerr( err, exit );
1889 dnsServerList = &pAdapterInfo->DnsServerList;
1893 bufLen = sizeof( FIXED_INFO );
1895 for ( i = 0; i < 100; i++ )
1899 GlobalFree( fixedInfo );
1903 fixedInfo = (FIXED_INFO*) GlobalAlloc( GPTR, bufLen );
1904 require_action( fixedInfo, exit, err = mStatus_NoMemoryErr );
1906 err = GetNetworkParams( fixedInfo, &bufLen );
1908 if ( err != ERROR_BUFFER_OVERFLOW )
1914 require_noerr( err, exit );
1916 dnsServerList = &fixedInfo->DnsServerList;
1919 for ( ipAddr = dnsServerList; ipAddr; ipAddr = ipAddr->Next )
1922 err = StringToAddress( &addr, ipAddr->IpAddress.String );
1923 if ( !err ) mDNS_AddDNSServer(m, mDNSNULL, mDNSInterface_Any, 0, &addr, UnicastDNSPort, kScopeNone, DEFAULT_UDNS_TIMEOUT, mDNSfalse, mDNSfalse, 0, mDNStrue, mDNStrue, mDNSfalse);
1930 free( pAdapterInfo );
1935 GlobalFree( fixedInfo );
1939 //===========================================================================================================================
1940 // SetDomainFromDHCP
1941 //===========================================================================================================================
1944 SetDomainFromDHCP( void )
1947 IP_ADAPTER_INFO * pAdapterInfo;
1948 IP_ADAPTER_INFO * pAdapter;
1952 LPSTR domain = NULL;
1954 mStatus err = mStatus_NoError;
1956 pAdapterInfo = NULL;
1958 for ( i = 0; i < 100; i++ )
1960 err = GetAdaptersInfo( pAdapterInfo, &bufLen);
1962 if ( err != ERROR_BUFFER_OVERFLOW )
1967 pAdapterInfo = (IP_ADAPTER_INFO*) realloc( pAdapterInfo, bufLen );
1968 require_action( pAdapterInfo, exit, err = kNoMemoryErr );
1971 require_noerr( err, exit );
1973 index = GetPrimaryInterface();
1975 for ( pAdapter = pAdapterInfo; pAdapter; pAdapter = pAdapter->Next )
1977 if ( pAdapter->IpAddressList.IpAddress.String &&
1978 pAdapter->IpAddressList.IpAddress.String[0] &&
1979 pAdapter->GatewayList.IpAddress.String &&
1980 pAdapter->GatewayList.IpAddress.String[0] &&
1981 ( !index || ( pAdapter->Index == index ) ) )
1983 // Found one that will work
1987 _snprintf( keyName, 1024, "%s%s", "SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters\\Interfaces\\", pAdapter->AdapterName );
1989 err = RegCreateKeyA( HKEY_LOCAL_MACHINE, keyName, &key );
1990 require_noerr( err, exit );
1992 err = RegQueryString( key, "Domain", &domain, &dwSize, NULL );
1995 if ( !domain || !domain[0] )
2003 err = RegQueryString( key, "DhcpDomain", &domain, &dwSize, NULL );
2007 if ( domain && domain[0] ) mDNS_AddSearchDomain_CString(domain, mDNSNULL);
2017 free( pAdapterInfo );
2031 //===========================================================================================================================
2032 // mDNSPlatformGetPrimaryInterface
2033 //===========================================================================================================================
2036 mDNSPlatformGetPrimaryInterface( mDNS * const m, mDNSAddr * v4, mDNSAddr * v6, mDNSAddr * router )
2038 IP_ADAPTER_INFO * pAdapterInfo;
2039 IP_ADAPTER_INFO * pAdapter;
2044 mStatus err = mStatus_NoError;
2050 pAdapterInfo = NULL;
2054 for ( i = 0; i < 100; i++ )
2056 err = GetAdaptersInfo( pAdapterInfo, &bufLen);
2058 if ( err != ERROR_BUFFER_OVERFLOW )
2063 pAdapterInfo = (IP_ADAPTER_INFO*) realloc( pAdapterInfo, bufLen );
2064 require_action( pAdapterInfo, exit, err = kNoMemoryErr );
2067 require_noerr( err, exit );
2069 index = GetPrimaryInterface();
2071 for ( pAdapter = pAdapterInfo; pAdapter; pAdapter = pAdapter->Next )
2073 if ( pAdapter->IpAddressList.IpAddress.String &&
2074 pAdapter->IpAddressList.IpAddress.String[0] &&
2075 pAdapter->GatewayList.IpAddress.String &&
2076 pAdapter->GatewayList.IpAddress.String[0] &&
2077 ( StringToAddress( v4, pAdapter->IpAddressList.IpAddress.String ) == mStatus_NoError ) &&
2078 ( StringToAddress( router, pAdapter->GatewayList.IpAddress.String ) == mStatus_NoError ) &&
2079 ( !index || ( pAdapter->Index == index ) ) )
2081 // Found one that will work
2083 if ( pAdapter->AddressLength == sizeof( m->PrimaryMAC ) )
2085 memcpy( &m->PrimaryMAC, pAdapter->Address, pAdapter->AddressLength );
2097 free( pAdapterInfo );
2103 mDNSexport void mDNSPlatformSendKeepalive(mDNSAddr *sadd, mDNSAddr *dadd, mDNSIPPort *lport, mDNSIPPort *rport, mDNSu32 seq, mDNSu32 ack, mDNSu16 win)
2105 (void) sadd; // Unused
2106 (void) dadd; // Unused
2107 (void) lport; // Unused
2108 (void) rport; // Unused
2109 (void) seq; // Unused
2110 (void) ack; // Unused
2111 (void) win; // Unused
2114 mDNSexport mStatus mDNSPlatformGetRemoteMacAddr(mDNS *const m, mDNSAddr *raddr)
2117 (void) raddr; // Unused
2119 return mStatus_UnsupportedErr;
2122 mDNSexport mStatus mDNSPlatformStoreSPSMACAddr(mDNSAddr *spsaddr, char *ifname)
2124 (void) spsaddr; // Unused
2125 (void) ifname; // Unused
2127 return mStatus_UnsupportedErr;
2130 mDNSexport mStatus mDNSPlatformClearSPSData(void)
2132 return mStatus_UnsupportedErr;
2135 mDNSexport mStatus mDNSPlatformStoreOwnerOptRecord(char *ifname, DNSMessage *msg, int length)
2137 (void) ifname; // Unused
2138 (void) msg; // Unused
2139 (void) length; // Unused
2140 return mStatus_UnsupportedErr;
2143 mDNSexport mStatus mDNSPlatformRetrieveTCPInfo(mDNS *const m, mDNSAddr *laddr, mDNSIPPort *lport, mDNSAddr *raddr, mDNSIPPort *rport, mDNSTCPInfo *mti)
2146 (void) laddr; // Unused
2147 (void) raddr; // Unused
2148 (void) lport; // Unused
2149 (void) rport; // Unused
2150 (void) mti; // Unused
2152 return mStatus_UnsupportedErr;
2155 mDNSexport void mDNSPlatformSetSocktOpt(void *sock, mDNSTransport_Type transType, mDNSAddr_Type addrType, const DNSQuestion *q)
2163 mDNSexport mDNSs32 mDNSPlatformGetPID()
2168 mDNSexport mDNSu16 mDNSPlatformGetUDPPort(UDPSocket *sock)
2170 DEBUG_UNUSED( sock );
2175 mDNSexport mDNSBool mDNSPlatformInterfaceIsD2D(mDNSInterfaceID InterfaceID)
2177 DEBUG_UNUSED( InterfaceID );
2186 //===========================================================================================================================
2188 //===========================================================================================================================
2189 #if( MDNS_DEBUGMSGS )
2190 mDNSexport void debugf_( const char *inFormat, ... )
2196 va_start( args, inFormat );
2197 length = mDNS_vsnprintf( buffer, sizeof( buffer ), inFormat, args );
2200 dlog( kDebugLevelInfo, "%s\n", buffer );
2204 //===========================================================================================================================
2206 //===========================================================================================================================
2208 #if( MDNS_DEBUGMSGS > 1 )
2209 mDNSexport void verbosedebugf_( const char *inFormat, ... )
2215 va_start( args, inFormat );
2216 length = mDNS_vsnprintf( buffer, sizeof( buffer ), inFormat, args );
2219 dlog( kDebugLevelVerbose, "%s\n", buffer );
2225 #pragma mark == Platform Internals ==
2228 //===========================================================================================================================
2230 //===========================================================================================================================
2232 mStatus SetupNiceName( mDNS * const inMDNS )
2234 HKEY descKey = NULL;
2238 NETSETUP_JOIN_STATUS joinStatus;
2245 // Set up the nice name.
2248 // First try and open the registry key that contains the computer description value
2249 s = TEXT("SYSTEM\\CurrentControlSet\\Services\\lanmanserver\\parameters");
2250 err = RegOpenKeyEx( HKEY_LOCAL_MACHINE, s, 0, KEY_READ, &descKey);
2251 check_translated_errno( err == 0, errno_compat(), kNameErr );
2256 DWORD descSize = sizeof( desc );
2258 // look for the computer description
2259 err = RegQueryValueEx( descKey, TEXT("srvcomment"), 0, NULL, (LPBYTE) &desc, &descSize);
2263 err = TCHARtoUTF8( desc, utf8, sizeof( utf8 ) );
2272 // if we can't find it in the registry, then use the hostname of the machine
2273 if ( err || ( utf8[ 0 ] == '\0' ) )
2275 TCHAR hostname[256];
2277 namelen = sizeof( hostname ) / sizeof( TCHAR );
2279 ok = GetComputerNameExW( ComputerNamePhysicalDnsHostname, hostname, &namelen );
2280 err = translate_errno( ok, (mStatus) GetLastError(), kNameErr );
2285 err = TCHARtoUTF8( hostname, utf8, sizeof( utf8 ) );
2294 // if we can't get the hostname
2295 if ( err || ( utf8[ 0 ] == '\0' ) )
2297 // Invalidate name so fall back to a default name.
2299 strcpy_s( utf8, sizeof( utf8 ), kMDNSDefaultName );
2302 utf8[ sizeof( utf8 ) - 1 ] = '\0';
2303 inMDNS->nicelabel.c[ 0 ] = (mDNSu8) (strlen( utf8 ) < MAX_DOMAIN_LABEL ? strlen( utf8 ) : MAX_DOMAIN_LABEL);
2304 memcpy( &inMDNS->nicelabel.c[ 1 ], utf8, inMDNS->nicelabel.c[ 0 ] );
2306 dlog( kDebugLevelInfo, DEBUG_NAME "nice name \"%.*s\"\n", inMDNS->nicelabel.c[ 0 ], &inMDNS->nicelabel.c[ 1 ] );
2310 RegCloseKey( descKey );
2313 ZeroMemory( inMDNS->p->nbname, sizeof( inMDNS->p->nbname ) );
2314 ZeroMemory( inMDNS->p->nbdomain, sizeof( inMDNS->p->nbdomain ) );
2316 namelen = sizeof( inMDNS->p->nbname );
2317 ok = GetComputerNameExA( ComputerNamePhysicalNetBIOS, inMDNS->p->nbname, &namelen );
2319 if ( ok ) dlog( kDebugLevelInfo, DEBUG_NAME "netbios name \"%s\"\n", inMDNS->p->nbname );
2321 err = NetGetJoinInformation( NULL, &joinName, &joinStatus );
2322 check ( err == NERR_Success );
2323 if ( err == NERR_Success )
2325 if ( ( joinStatus == NetSetupWorkgroupName ) || ( joinStatus == NetSetupDomainName ) )
2327 err = TCHARtoUTF8( joinName, inMDNS->p->nbdomain, sizeof( inMDNS->p->nbdomain ) );
2329 if ( !err ) dlog( kDebugLevelInfo, DEBUG_NAME "netbios domain/workgroup \"%s\"\n", inMDNS->p->nbdomain );
2332 NetApiBufferFree( joinName );
2341 //===========================================================================================================================
2343 //===========================================================================================================================
2345 mDNSlocal mStatus SetupHostName( mDNS * const inMDNS )
2348 char tempString[ 256 ];
2349 DWORD tempStringLen;
2350 domainlabel tempLabel;
2355 // Set up the nice name.
2356 tempString[ 0 ] = '\0';
2358 // use the hostname of the machine
2359 tempStringLen = sizeof( tempString );
2360 ok = GetComputerNameExA( ComputerNamePhysicalDnsHostname, tempString, &tempStringLen );
2361 err = translate_errno( ok, (mStatus) GetLastError(), kNameErr );
2364 // if we can't get the hostname
2365 if( err || ( tempString[ 0 ] == '\0' ) )
2367 // Invalidate name so fall back to a default name.
2369 strcpy_s( tempString, sizeof( tempString ), kMDNSDefaultName );
2372 tempString[ sizeof( tempString ) - 1 ] = '\0';
2373 tempLabel.c[ 0 ] = (mDNSu8) (strlen( tempString ) < MAX_DOMAIN_LABEL ? strlen( tempString ) : MAX_DOMAIN_LABEL );
2374 memcpy( &tempLabel.c[ 1 ], tempString, tempLabel.c[ 0 ] );
2376 // Set up the host name.
2378 ConvertUTF8PstringToRFC1034HostLabel( tempLabel.c, &inMDNS->hostlabel );
2379 if( inMDNS->hostlabel.c[ 0 ] == 0 )
2381 // Nice name has no characters that are representable as an RFC1034 name (e.g. Japanese) so use the default.
2383 MakeDomainLabelFromLiteralString( &inMDNS->hostlabel, kMDNSDefaultName );
2386 check( inMDNS->hostlabel.c[ 0 ] != 0 );
2388 mDNS_SetFQDN( inMDNS );
2390 dlog( kDebugLevelInfo, DEBUG_NAME "host name \"%.*s\"\n", inMDNS->hostlabel.c[ 0 ], &inMDNS->hostlabel.c[ 1 ] );
2395 //===========================================================================================================================
2397 //===========================================================================================================================
2399 mDNSlocal mStatus SetupName( mDNS * const inMDNS )
2405 err = SetupNiceName( inMDNS );
2408 err = SetupHostName( inMDNS );
2414 //===========================================================================================================================
2415 // SetupInterfaceList
2416 //===========================================================================================================================
2418 mStatus SetupInterfaceList( mDNS * const inMDNS )
2421 mDNSInterfaceData ** next;
2422 mDNSInterfaceData * ifd;
2423 struct ifaddrs * addrs;
2425 struct ifaddrs * loopbackv4;
2426 struct ifaddrs * loopbackv6;
2431 mDNSBool foundUnicastSock4DestAddr;
2432 mDNSBool foundUnicastSock6DestAddr;
2434 dlog( kDebugLevelTrace, DEBUG_NAME "setting up interface list\n" );
2438 inMDNS->p->registeredLoopback4 = mDNSfalse;
2439 inMDNS->p->nextDHCPLeaseExpires = 0x7FFFFFFF;
2441 foundv4 = mDNSfalse;
2442 foundv6 = mDNSfalse;
2443 foundUnicastSock4DestAddr = mDNSfalse;
2444 foundUnicastSock6DestAddr = mDNSfalse;
2446 // Tear down any existing interfaces that may be set up.
2448 TearDownInterfaceList( inMDNS );
2450 // Set up the name of this machine.
2452 err = SetupName( inMDNS );
2455 // Set up IPv4 interface(s). We have to set up IPv4 first so any IPv6 interface with an IPv4-routable address
2456 // can refer to the IPv4 interface when it registers to allow DNS AAAA records over the IPv4 interface.
2458 err = getifaddrs( &addrs );
2459 require_noerr( err, exit );
2463 next = &inMDNS->p->interfaceList;
2465 flagMask = IFF_UP | IFF_MULTICAST;
2466 flagTest = IFF_UP | IFF_MULTICAST;
2468 #if( MDNS_WINDOWS_ENABLE_IPV4 )
2469 for( p = addrs; p; p = p->ifa_next )
2471 if( !p->ifa_addr || ( p->ifa_addr->sa_family != AF_INET ) || ( ( p->ifa_flags & flagMask ) != flagTest ) )
2475 if( p->ifa_flags & IFF_LOOPBACK )
2483 dlog( kDebugLevelVerbose, DEBUG_NAME "Interface %40s (0x%08X) %##a\n",
2484 p->ifa_name ? p->ifa_name : "<null>", p->ifa_extra.index, p->ifa_addr );
2486 err = SetupInterface( inMDNS, p, &ifd );
2487 require_noerr( err, exit );
2489 // If this guy is point-to-point (ifd->interfaceInfo.McastTxRx == 0 ) we still want to
2490 // register him, but we also want to note that we haven't found a v4 interface
2491 // so that we register loopback so same host operations work
2493 if ( ifd->interfaceInfo.McastTxRx == mDNStrue )
2498 if ( p->ifa_dhcpEnabled && ( p->ifa_dhcpLeaseExpires < inMDNS->p->nextDHCPLeaseExpires ) )
2500 inMDNS->p->nextDHCPLeaseExpires = p->ifa_dhcpLeaseExpires;
2503 // If we're on a platform that doesn't have WSARecvMsg(), there's no way
2504 // of determing the destination address of a packet that is sent to us.
2505 // For multicast packets, that's easy to determine. But for the unicast
2506 // sockets, we'll fake it by taking the address of the first interface
2507 // that is successfully setup.
2509 if ( !foundUnicastSock4DestAddr )
2511 inMDNS->p->unicastSock4.addr = ifd->interfaceInfo.ip;
2512 foundUnicastSock4DestAddr = TRUE;
2517 ++inMDNS->p->interfaceCount;
2521 // Set up IPv6 interface(s) after IPv4 is set up (see IPv4 notes above for reasoning).
2523 #if( MDNS_WINDOWS_ENABLE_IPV6 )
2527 for( p = addrs; p; p = p->ifa_next )
2529 if( !p->ifa_addr || ( p->ifa_addr->sa_family != AF_INET6 ) || ( ( p->ifa_flags & flagMask ) != flagTest ) )
2533 if( p->ifa_flags & IFF_LOOPBACK )
2541 dlog( kDebugLevelVerbose, DEBUG_NAME "Interface %40s (0x%08X) %##a\n",
2542 p->ifa_name ? p->ifa_name : "<null>", p->ifa_extra.index, p->ifa_addr );
2544 err = SetupInterface( inMDNS, p, &ifd );
2545 require_noerr( err, exit );
2547 // If this guy is point-to-point (ifd->interfaceInfo.McastTxRx == 0 ) we still want to
2548 // register him, but we also want to note that we haven't found a v4 interface
2549 // so that we register loopback so same host operations work
2551 if ( ifd->interfaceInfo.McastTxRx == mDNStrue )
2556 // If we're on a platform that doesn't have WSARecvMsg(), there's no way
2557 // of determing the destination address of a packet that is sent to us.
2558 // For multicast packets, that's easy to determine. But for the unicast
2559 // sockets, we'll fake it by taking the address of the first interface
2560 // that is successfully setup.
2562 if ( !foundUnicastSock6DestAddr )
2564 inMDNS->p->unicastSock6.addr = ifd->interfaceInfo.ip;
2565 foundUnicastSock6DestAddr = TRUE;
2570 ++inMDNS->p->interfaceCount;
2576 // If there are no real interfaces, but there is a loopback interface, use that so same-machine operations work.
2578 #if( !MDNS_WINDOWS_ENABLE_IPV4 && !MDNS_WINDOWS_ENABLE_IPV6 )
2580 flagMask |= IFF_LOOPBACK;
2581 flagTest |= IFF_LOOPBACK;
2583 for( p = addrs; p; p = p->ifa_next )
2585 if( !p->ifa_addr || ( ( p->ifa_flags & flagMask ) != flagTest ) )
2589 if( ( p->ifa_addr->sa_family != AF_INET ) && ( p->ifa_addr->sa_family != AF_INET6 ) )
2600 if ( !foundv4 && loopbackv4 )
2602 dlog( kDebugLevelInfo, DEBUG_NAME "Interface %40s (0x%08X) %##a\n",
2603 loopbackv4->ifa_name ? loopbackv4->ifa_name : "<null>", loopbackv4->ifa_extra.index, loopbackv4->ifa_addr );
2605 err = SetupInterface( inMDNS, loopbackv4, &ifd );
2606 require_noerr( err, exit );
2608 inMDNS->p->registeredLoopback4 = mDNStrue;
2610 #if( MDNS_WINDOWS_ENABLE_IPV4 )
2612 // If we're on a platform that doesn't have WSARecvMsg(), there's no way
2613 // of determing the destination address of a packet that is sent to us.
2614 // For multicast packets, that's easy to determine. But for the unicast
2615 // sockets, we'll fake it by taking the address of the first interface
2616 // that is successfully setup.
2618 if ( !foundUnicastSock4DestAddr )
2620 inMDNS->p->unicastSock4.addr = ifd->sock.addr;
2621 foundUnicastSock4DestAddr = TRUE;
2627 ++inMDNS->p->interfaceCount;
2630 if ( !foundv6 && loopbackv6 )
2632 dlog( kDebugLevelInfo, DEBUG_NAME "Interface %40s (0x%08X) %##a\n",
2633 loopbackv6->ifa_name ? loopbackv6->ifa_name : "<null>", loopbackv6->ifa_extra.index, loopbackv6->ifa_addr );
2635 err = SetupInterface( inMDNS, loopbackv6, &ifd );
2636 require_noerr( err, exit );
2638 #if( MDNS_WINDOWS_ENABLE_IPV6 )
2642 // If we're on a platform that doesn't have WSARecvMsg(), there's no way
2643 // of determing the destination address of a packet that is sent to us.
2644 // For multicast packets, that's easy to determine. But for the unicast
2645 // sockets, we'll fake it by taking the address of the first interface
2646 // that is successfully setup.
2648 if ( !foundUnicastSock6DestAddr )
2650 inMDNS->p->unicastSock6.addr = ifd->sock.addr;
2651 foundUnicastSock6DestAddr = TRUE;
2659 ++inMDNS->p->interfaceCount;
2662 CheckFileShares( inMDNS );
2667 TearDownInterfaceList( inMDNS );
2671 freeifaddrs( addrs );
2673 dlog( kDebugLevelTrace, DEBUG_NAME "setting up interface list done (err=%d %m)\n", err, err );
2677 //===========================================================================================================================
2678 // TearDownInterfaceList
2679 //===========================================================================================================================
2681 mStatus TearDownInterfaceList( mDNS * const inMDNS )
2683 mDNSInterfaceData ** p;
2684 mDNSInterfaceData * ifd;
2686 dlog( kDebugLevelTrace, DEBUG_NAME "tearing down interface list\n" );
2690 // Free any interfaces that were previously marked inactive and are no longer referenced by the mDNS cache.
2691 // Interfaces are marked inactive, but not deleted immediately if they were still referenced by the mDNS cache
2692 // so that remove events that occur after an interface goes away can still report the correct interface.
2694 p = &inMDNS->p->inactiveInterfaceList;
2698 if( NumCacheRecordsForInterfaceID( inMDNS, (mDNSInterfaceID) ifd ) > 0 )
2704 dlog( kDebugLevelInfo, DEBUG_NAME "freeing unreferenced, inactive interface %#p %#a\n", ifd, &ifd->interfaceInfo.ip );
2707 QueueUserAPC( ( PAPCFUNC ) FreeInterface, inMDNS->p->mainThread, ( ULONG_PTR ) ifd );
2710 // Tear down all the interfaces.
2712 while( inMDNS->p->interfaceList )
2714 ifd = inMDNS->p->interfaceList;
2715 inMDNS->p->interfaceList = ifd->next;
2717 TearDownInterface( inMDNS, ifd );
2719 inMDNS->p->interfaceCount = 0;
2721 dlog( kDebugLevelTrace, DEBUG_NAME "tearing down interface list done\n" );
2722 return( mStatus_NoError );
2725 //===========================================================================================================================
2727 //===========================================================================================================================
2729 mDNSlocal mStatus SetupInterface( mDNS * const inMDNS, const struct ifaddrs *inIFA, mDNSInterfaceData **outIFD )
2731 mDNSInterfaceData * ifd;
2732 mDNSInterfaceData * p;
2736 dlog( kDebugLevelTrace, DEBUG_NAME "setting up interface\n" );
2740 check( inIFA->ifa_addr );
2743 // Allocate memory for the interface and initialize it.
2745 ifd = (mDNSInterfaceData *) calloc( 1, sizeof( *ifd ) );
2746 require_action( ifd, exit, err = mStatus_NoMemoryErr );
2747 ifd->sock.fd = kInvalidSocketRef;
2748 ifd->sock.ifd = ifd;
2749 ifd->sock.next = NULL;
2750 ifd->sock.m = inMDNS;
2751 ifd->index = inIFA->ifa_extra.index;
2752 ifd->scopeID = inIFA->ifa_extra.index;
2753 check( strlen( inIFA->ifa_name ) < sizeof( ifd->name ) );
2754 strncpy( ifd->name, inIFA->ifa_name, sizeof( ifd->name ) - 1 );
2755 ifd->name[ sizeof( ifd->name ) - 1 ] = '\0';
2757 strncpy(ifd->interfaceInfo.ifname, inIFA->ifa_name, sizeof(ifd->interfaceInfo.ifname));
2758 ifd->interfaceInfo.ifname[sizeof(ifd->interfaceInfo.ifname)-1] = 0;
2760 // We always send and receive using IPv4, but to reduce traffic, we send and receive using IPv6 only on interfaces
2761 // that have no routable IPv4 address. Having a routable IPv4 address assigned is a reasonable indicator of being
2762 // on a large configured network, which means there's a good chance that most or all the other devices on that
2763 // network should also have v4. By doing this we lose the ability to talk to true v6-only devices on that link,
2764 // but we cut the packet rate in half. At this time, reducing the packet rate is more important than v6-only
2765 // devices on a large configured network, so we are willing to make that sacrifice.
2767 ifd->interfaceInfo.McastTxRx = ( ( inIFA->ifa_flags & IFF_MULTICAST ) && !( inIFA->ifa_flags & IFF_POINTTOPOINT ) ) ? mDNStrue : mDNSfalse;
2768 ifd->interfaceInfo.InterfaceID = NULL;
2770 for( p = inMDNS->p->interfaceList; p; p = p->next )
2772 if ( strcmp( p->name, ifd->name ) == 0 )
2774 if (!ifd->interfaceInfo.InterfaceID)
2776 ifd->interfaceInfo.InterfaceID = (mDNSInterfaceID) p;
2779 if ( ( inIFA->ifa_addr->sa_family != AF_INET ) &&
2780 ( p->interfaceInfo.ip.type == mDNSAddrType_IPv4 ) &&
2781 ( p->interfaceInfo.ip.ip.v4.b[ 0 ] != 169 || p->interfaceInfo.ip.ip.v4.b[ 1 ] != 254 ) )
2783 ifd->interfaceInfo.McastTxRx = mDNSfalse;
2790 if ( !ifd->interfaceInfo.InterfaceID )
2792 ifd->interfaceInfo.InterfaceID = (mDNSInterfaceID) ifd;
2795 // Set up a socket for this interface (if needed).
2797 if( ifd->interfaceInfo.McastTxRx )
2801 err = SetupSocket( inMDNS, inIFA->ifa_addr, MulticastDNSPort, &ifd->sock.fd );
2802 require_noerr( err, exit );
2803 ifd->sock.addr = ( inIFA->ifa_addr->sa_family == AF_INET6 ) ? AllDNSLinkGroup_v6 : AllDNSLinkGroup_v4;
2804 ifd->sock.port = MulticastDNSPort;
2806 // Get a ptr to the WSARecvMsg function, if supported. Otherwise, we'll fallback to recvfrom.
2808 err = WSAIoctl( ifd->sock.fd, SIO_GET_EXTENSION_FUNCTION_POINTER, &kWSARecvMsgGUID, sizeof( kWSARecvMsgGUID ), &ifd->sock.recvMsgPtr, sizeof( ifd->sock.recvMsgPtr ), &size, NULL, NULL );
2812 ifd->sock.recvMsgPtr = NULL;
2816 if ( inIFA->ifa_dhcpEnabled && ( inIFA->ifa_dhcpLeaseExpires < inMDNS->p->nextDHCPLeaseExpires ) )
2818 inMDNS->p->nextDHCPLeaseExpires = inIFA->ifa_dhcpLeaseExpires;
2821 ifd->interfaceInfo.NetWake = inIFA->ifa_womp;
2823 // Register this interface with mDNS.
2825 err = SockAddrToMDNSAddr( inIFA->ifa_addr, &ifd->interfaceInfo.ip, NULL );
2826 require_noerr( err, exit );
2828 err = SockAddrToMDNSAddr( inIFA->ifa_netmask, &ifd->interfaceInfo.mask, NULL );
2829 require_noerr( err, exit );
2831 memcpy( ifd->interfaceInfo.MAC.b, inIFA->ifa_physaddr, sizeof( ifd->interfaceInfo.MAC.b ) );
2833 ifd->interfaceInfo.Advertise = ( mDNSu8 ) inMDNS->AdvertiseLocalAddresses;
2835 if ( ifd->sock.fd != kInvalidSocketRef )
2837 err = mDNSPollRegisterSocket( ifd->sock.fd, FD_READ, UDPSocketNotification, &ifd->sock );
2838 require_noerr( err, exit );
2841 // If interface is a direct link, address record will be marked as kDNSRecordTypeKnownUnique
2842 // and skip the probe phase of the probe/announce packet sequence.
2843 ifd->interfaceInfo.DirectLink = mDNSfalse;
2844 ifd->interfaceInfo.SupportsUnicastMDNSResponse = mDNStrue;
2846 err = mDNS_RegisterInterface( inMDNS, &ifd->interfaceInfo, NormalActivation );
2847 require_noerr( err, exit );
2848 ifd->hostRegistered = mDNStrue;
2850 dlog( kDebugLevelInfo, DEBUG_NAME "Registered interface %##a with mDNS\n", inIFA->ifa_addr );
2861 TearDownInterface( inMDNS, ifd );
2863 dlog( kDebugLevelTrace, DEBUG_NAME "setting up interface done (err=%d %m)\n", err, err );
2867 //===========================================================================================================================
2868 // TearDownInterface
2869 //===========================================================================================================================
2871 mDNSlocal mStatus TearDownInterface( mDNS * const inMDNS, mDNSInterfaceData *inIFD )
2876 // Deregister this interface with mDNS.
2878 dlog( kDebugLevelInfo, DEBUG_NAME "Deregistering interface %#a with mDNS\n", &inIFD->interfaceInfo.ip );
2880 if( inIFD->hostRegistered )
2882 inIFD->hostRegistered = mDNSfalse;
2883 mDNS_DeregisterInterface( inMDNS, &inIFD->interfaceInfo, NormalActivation );
2886 // Tear down the multicast socket.
2888 UDPCloseSocket( &inIFD->sock );
2890 // If the interface is still referenced by items in the mDNS cache then put it on the inactive list. This keeps
2891 // the InterfaceID valid so remove events report the correct interface. If it is no longer referenced, free it.
2893 if( NumCacheRecordsForInterfaceID( inMDNS, (mDNSInterfaceID) inIFD ) > 0 )
2895 inIFD->next = inMDNS->p->inactiveInterfaceList;
2896 inMDNS->p->inactiveInterfaceList = inIFD;
2897 dlog( kDebugLevelInfo, DEBUG_NAME "deferring free of interface %#p %#a\n", inIFD, &inIFD->interfaceInfo.ip );
2901 dlog( kDebugLevelInfo, DEBUG_NAME "freeing interface %#p %#a immediately\n", inIFD, &inIFD->interfaceInfo.ip );
2902 QueueUserAPC( ( PAPCFUNC ) FreeInterface, inMDNS->p->mainThread, ( ULONG_PTR ) inIFD );
2905 return( mStatus_NoError );
2908 mDNSlocal void CALLBACK FreeInterface( mDNSInterfaceData *inIFD )
2913 //===========================================================================================================================
2915 //===========================================================================================================================
2917 mDNSlocal mStatus SetupSocket( mDNS * const inMDNS, const struct sockaddr *inAddr, mDNSIPPort port, SocketRef *outSocketRef )
2922 DWORD bytesReturned = 0;
2923 BOOL behavior = FALSE;
2925 DEBUG_UNUSED( inMDNS );
2927 dlog( kDebugLevelTrace, DEBUG_NAME "setting up socket %##a\n", inAddr );
2929 check( outSocketRef );
2931 // Set up an IPv4 or IPv6 UDP socket.
2933 sock = socket( inAddr->sa_family, SOCK_DGRAM, IPPROTO_UDP );
2934 err = translate_errno( IsValidSocket( sock ), errno_compat(), kUnknownErr );
2935 require_noerr( err, exit );
2937 // Turn on reuse address option so multiple servers can listen for Multicast DNS packets,
2938 // if we're creating a multicast socket
2940 if ( !mDNSIPPortIsZero( port ) )
2943 err = setsockopt( sock, SOL_SOCKET, SO_REUSEADDR, (char *) &option, sizeof( option ) );
2944 check_translated_errno( err == 0, errno_compat(), kOptionErr );
2947 // <rdar://problem/7894393> Bonjour for Windows broken on Windows XP
2949 // Not sure why, but the default behavior for sockets is to behave incorrectly
2950 // when using them in Overlapped I/O mode on XP. According to MSDN:
2952 // SIO_UDP_CONNRESET (opcode setting: I, T==3)
2953 // Windows XP: Controls whether UDP PORT_UNREACHABLE messages are reported. Set to TRUE to enable reporting.
2954 // Set to FALSE to disable reporting.
2956 // Packet traces from misbehaving Bonjour installations showed that ICMP port unreachable
2957 // messages were being sent to us after we sent out packets to a multicast address. This is clearly
2958 // incorrect behavior, but should be harmless. However, after receiving a port unreachable error, WinSock
2959 // will no longer receive any packets from that socket, which is not harmless. This behavior is only
2962 // So we turn off port unreachable reporting to make sure our sockets that are reading
2963 // multicast packets function correctly under all circumstances.
2965 err = WSAIoctl( sock, SIO_UDP_CONNRESET, &behavior, sizeof(behavior), NULL, 0, &bytesReturned, NULL, NULL );
2966 check_translated_errno( err == 0, errno_compat(), kOptionErr );
2968 if( inAddr->sa_family == AF_INET )
2971 struct sockaddr_in sa4;
2972 struct ip_mreq mreqv4;
2974 // Bind the socket to the desired port
2976 ipv4.NotAnInteger = ( (const struct sockaddr_in *) inAddr )->sin_addr.s_addr;
2977 mDNSPlatformMemZero( &sa4, sizeof( sa4 ) );
2978 sa4.sin_family = AF_INET;
2979 sa4.sin_port = port.NotAnInteger;
2980 sa4.sin_addr.s_addr = ipv4.NotAnInteger;
2982 err = bind( sock, (struct sockaddr *) &sa4, sizeof( sa4 ) );
2983 check_translated_errno( err == 0, errno_compat(), kUnknownErr );
2985 // Turn on option to receive destination addresses and receiving interface.
2988 err = setsockopt( sock, IPPROTO_IP, IP_PKTINFO, (char *) &option, sizeof( option ) );
2989 check_translated_errno( err == 0, errno_compat(), kOptionErr );
2991 if ( !mDNSIPPortIsZero( port ) )
2993 // Join the all-DNS multicast group so we receive Multicast DNS packets
2995 mreqv4.imr_multiaddr.s_addr = AllDNSLinkGroup_v4.ip.v4.NotAnInteger;
2996 mreqv4.imr_interface.s_addr = ipv4.NotAnInteger;
2997 err = setsockopt( sock, IPPROTO_IP, IP_ADD_MEMBERSHIP, (char *) &mreqv4, sizeof( mreqv4 ) );
2998 check_translated_errno( err == 0, errno_compat(), kOptionErr );
3000 // Specify the interface to send multicast packets on this socket.
3002 sa4.sin_addr.s_addr = ipv4.NotAnInteger;
3003 err = setsockopt( sock, IPPROTO_IP, IP_MULTICAST_IF, (char *) &sa4.sin_addr, sizeof( sa4.sin_addr ) );
3004 check_translated_errno( err == 0, errno_compat(), kOptionErr );
3006 // Enable multicast loopback so we receive multicast packets we send (for same-machine operations).
3009 err = setsockopt( sock, IPPROTO_IP, IP_MULTICAST_LOOP, (char *) &option, sizeof( option ) );
3010 check_translated_errno( err == 0, errno_compat(), kOptionErr );
3013 // Send unicast packets with TTL 255 (helps against spoofing).
3016 err = setsockopt( sock, IPPROTO_IP, IP_TTL, (char *) &option, sizeof( option ) );
3017 check_translated_errno( err == 0, errno_compat(), kOptionErr );
3019 // Send multicast packets with TTL 255 (helps against spoofing).
3022 err = setsockopt( sock, IPPROTO_IP, IP_MULTICAST_TTL, (char *) &option, sizeof( option ) );
3023 check_translated_errno( err == 0, errno_compat(), kOptionErr );
3026 else if( inAddr->sa_family == AF_INET6 )
3028 struct sockaddr_in6 * sa6p;
3029 struct sockaddr_in6 sa6;
3030 struct ipv6_mreq mreqv6;
3032 sa6p = (struct sockaddr_in6 *) inAddr;
3034 // Bind the socket to the desired port
3036 mDNSPlatformMemZero( &sa6, sizeof( sa6 ) );
3037 sa6.sin6_family = AF_INET6;
3038 sa6.sin6_port = port.NotAnInteger;
3039 sa6.sin6_flowinfo = 0;
3040 sa6.sin6_addr = sa6p->sin6_addr;
3041 sa6.sin6_scope_id = sa6p->sin6_scope_id;
3043 err = bind( sock, (struct sockaddr *) &sa6, sizeof( sa6 ) );
3044 check_translated_errno( err == 0, errno_compat(), kUnknownErr );
3046 // Turn on option to receive destination addresses and receiving interface.
3049 err = setsockopt( sock, IPPROTO_IPV6, IPV6_PKTINFO, (char *) &option, sizeof( option ) );
3050 check_translated_errno( err == 0, errno_compat(), kOptionErr );
3052 // We only want to receive IPv6 packets (not IPv4-mapped IPv6 addresses) because we have a separate socket
3053 // for IPv4, but the IPv6 stack in Windows currently doesn't support IPv4-mapped IPv6 addresses and doesn't
3054 // support the IPV6_V6ONLY socket option so the following code would typically not be executed (or needed).
3056 #if( defined( IPV6_V6ONLY ) )
3058 err = setsockopt( sock, IPPROTO_IPV6, IPV6_V6ONLY, (char *) &option, sizeof( option ) );
3059 check_translated_errno( err == 0, errno_compat(), kOptionErr );
3062 if ( !mDNSIPPortIsZero( port ) )
3064 // Join the all-DNS multicast group so we receive Multicast DNS packets.
3066 mreqv6.ipv6mr_multiaddr = *( (struct in6_addr *) &AllDNSLinkGroup_v6.ip.v6 );
3067 mreqv6.ipv6mr_interface = sa6p->sin6_scope_id;
3068 err = setsockopt( sock, IPPROTO_IPV6, IPV6_JOIN_GROUP, (char *) &mreqv6, sizeof( mreqv6 ) );
3069 check_translated_errno( err == 0, errno_compat(), kOptionErr );
3071 // Specify the interface to send multicast packets on this socket.
3073 option = (int) sa6p->sin6_scope_id;
3074 err = setsockopt( sock, IPPROTO_IPV6, IPV6_MULTICAST_IF, (char *) &option, sizeof( option ) );
3075 check_translated_errno( err == 0, errno_compat(), kOptionErr );
3077 // Enable multicast loopback so we receive multicast packets we send (for same-machine operations).
3080 err = setsockopt( sock, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, (char *) &option, sizeof( option ) );
3081 check_translated_errno( err == 0, errno_compat(), kOptionErr );
3084 // Send unicast packets with TTL 255 (helps against spoofing).
3087 err = setsockopt( sock, IPPROTO_IPV6, IPV6_UNICAST_HOPS, (char *) &option, sizeof( option ) );
3088 check_translated_errno( err == 0, errno_compat(), kOptionErr );
3090 // Send multicast packets with TTL 255 (helps against spoofing).
3093 err = setsockopt( sock, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, (char *) &option, sizeof( option ) );
3094 check_translated_errno( err == 0, errno_compat(), kOptionErr );
3098 dlog( kDebugLevelError, DEBUG_NAME "%s: unsupport socket family (%d)\n", __ROUTINE__, inAddr->sa_family );
3099 err = kUnsupportedErr;
3105 *outSocketRef = sock;
3106 sock = kInvalidSocketRef;
3107 err = mStatus_NoError;
3110 if( IsValidSocket( sock ) )
3112 close_compat( sock );
3117 //===========================================================================================================================
3119 //===========================================================================================================================
3121 mDNSlocal mStatus SockAddrToMDNSAddr( const struct sockaddr * const inSA, mDNSAddr *outIP, mDNSIPPort *outPort )
3128 if( inSA->sa_family == AF_INET )
3130 struct sockaddr_in * sa4;
3132 sa4 = (struct sockaddr_in *) inSA;
3133 outIP->type = mDNSAddrType_IPv4;
3134 outIP->ip.v4.NotAnInteger = sa4->sin_addr.s_addr;
3137 outPort->NotAnInteger = sa4->sin_port;
3139 err = mStatus_NoError;
3141 else if( inSA->sa_family == AF_INET6 )
3143 struct sockaddr_in6 * sa6;
3145 sa6 = (struct sockaddr_in6 *) inSA;
3146 outIP->type = mDNSAddrType_IPv6;
3147 outIP->ip.v6 = *( (mDNSv6Addr *) &sa6->sin6_addr );
3148 if( IN6_IS_ADDR_LINKLOCAL( &sa6->sin6_addr ) )
3150 outIP->ip.v6.w[ 1 ] = 0;
3154 outPort->NotAnInteger = sa6->sin6_port;
3156 err = mStatus_NoError;
3160 dlog( kDebugLevelError, DEBUG_NAME "%s: invalid sa_family %d", __ROUTINE__, inSA->sa_family );
3161 err = mStatus_BadParamErr;
3170 //===========================================================================================================================
3171 // UDPSocketNotification
3172 //===========================================================================================================================
3174 mDNSlocal void CALLBACK
3175 UDPSocketNotification( SOCKET sock, LPWSANETWORKEVENTS event, void *context )
3177 UDPSocket *udpSock = ( UDPSocket* ) context;
3180 struct sockaddr_storage sockSrcAddr; // This is filled in by the WSARecv* function
3181 INT sockSrcAddrLen; // See above
3183 mDNSInterfaceID iid;
3187 uint8_t controlBuffer[ 128 ];
3193 DEBUG_UNUSED( sock );
3194 DEBUG_UNUSED( event );
3196 require_action( udpSock != NULL, exit, err = mStatus_BadStateErr );
3198 dlog( kDebugLevelChatty, DEBUG_NAME "%s: sock = %d\n", __ROUTINE__, udpSock->fd );
3200 // Initialize the buffer structure
3202 wbuf.buf = (char *) &udpSock->packet;
3203 wbuf.len = (u_long) sizeof( udpSock->packet );
3204 sockSrcAddrLen = sizeof( sockSrcAddr );
3210 if ( udpSock->recvMsgPtr )
3214 wmsg.name = ( LPSOCKADDR ) &sockSrcAddr;
3215 wmsg.namelen = sockSrcAddrLen;
3216 wmsg.lpBuffers = &wbuf;
3217 wmsg.dwBufferCount = 1;
3218 wmsg.Control.buf = ( CHAR* ) controlBuffer;
3219 wmsg.Control.len = sizeof( controlBuffer );
3222 err = udpSock->recvMsgPtr( udpSock->fd, &wmsg, &size, NULL, NULL );
3223 err = translate_errno( ( err == 0 ), (OSStatus) WSAGetLastError(), kUnknownErr );
3226 // <rdar://problem/7824093> iTunes 9.1 fails to install with Bonjour service on Windows 7 Ultimate
3228 // There seems to be a bug in some network device drivers that involves calling WSARecvMsg().
3229 // Although all the parameters to WSARecvMsg() are correct, it returns a
3230 // WSAEFAULT error code when there is no actual error. We have found experientially that falling
3231 // back to using WSARecvFrom() when this happens will work correctly.
3233 if ( err == WSAEFAULT ) udpSock->recvMsgPtr = NULL;
3239 num = WSARecvFrom( udpSock->fd, &wbuf, 1, NULL, &flags, ( LPSOCKADDR ) &sockSrcAddr, &sockSrcAddrLen, NULL, NULL );
3240 err = translate_errno( ( num >= 0 ), ( OSStatus ) WSAGetLastError(), kUnknownErr );
3243 // According to MSDN <http://msdn.microsoft.com/en-us/library/ms741687(VS.85).aspx>:
3245 // "WSAECONNRESET: For a UDP datagram socket, this error would indicate that a previous
3246 // send operation resulted in an ICMP "Port Unreachable" message."
3248 // Because this is the case, we want to ignore this error and try again. Just in case
3249 // this is some kind of pathological condition, we'll break out of the retry loop
3250 // after 100 iterations
3252 require_action( !err || ( err == WSAECONNRESET ) || ( err == WSAEFAULT ), exit, err = WSAGetLastError() );
3254 while ( ( ( err == WSAECONNRESET ) || ( err == WSAEFAULT ) ) && ( numTries++ < 100 ) );
3256 require_noerr( err, exit );
3258 // Translate the source of this packet into mDNS data types
3260 SockAddrToMDNSAddr( (struct sockaddr* ) &sockSrcAddr, &srcAddr, &srcPort );
3262 // Initialize the destination of this packet. Just in case
3263 // we can't determine this info because we couldn't call
3264 // WSARecvMsg (recvMsgPtr)
3266 dstAddr = udpSock->addr;
3267 dstPort = udpSock->port;
3269 if ( udpSock->recvMsgPtr )
3271 LPWSACMSGHDR header;
3272 LPWSACMSGHDR last = NULL;
3275 // Parse the control information. Reject packets received on the wrong interface.
3277 // <rdar://problem/7832196> INSTALL: Bonjour 2.0 on Windows can not start / stop
3279 // There seems to be an interaction between Bullguard and this next bit of code.
3280 // When a user's machine is running Bullguard, the control information that is
3281 // returned is corrupted, and the code would go into an infinite loop. We'll add
3282 // two bits of defensive coding here. The first will check that each pointer to
3283 // the LPWSACMSGHDR that is returned in the for loop is different than the last.
3284 // This fixes the problem with Bullguard. The second will break out of this loop
3285 // after 100 iterations, just in case the corruption isn't caught by the first
3288 for ( header = WSA_CMSG_FIRSTHDR( &wmsg ); header; header = WSA_CMSG_NXTHDR( &wmsg, header ) )
3290 if ( ( header != last ) && ( ++count < 100 ) )
3294 if ( ( header->cmsg_level == IPPROTO_IP ) && ( header->cmsg_type == IP_PKTINFO ) )
3296 IN_PKTINFO * ipv4PacketInfo;
3298 ipv4PacketInfo = (IN_PKTINFO *) WSA_CMSG_DATA( header );
3300 if ( udpSock->ifd != NULL )
3302 require_action( ipv4PacketInfo->ipi_ifindex == udpSock->ifd->index, exit, err = ( DWORD ) kMismatchErr );
3305 dstAddr.type = mDNSAddrType_IPv4;
3306 dstAddr.ip.v4.NotAnInteger = ipv4PacketInfo->ipi_addr.s_addr;
3308 else if( ( header->cmsg_level == IPPROTO_IPV6 ) && ( header->cmsg_type == IPV6_PKTINFO ) )
3310 IN6_PKTINFO * ipv6PacketInfo;
3312 ipv6PacketInfo = (IN6_PKTINFO *) WSA_CMSG_DATA( header );
3314 if ( udpSock->ifd != NULL )
3316 require_action( ipv6PacketInfo->ipi6_ifindex == ( udpSock->ifd->index - kIPv6IfIndexBase ), exit, err = ( DWORD ) kMismatchErr );
3319 dstAddr.type = mDNSAddrType_IPv6;
3320 dstAddr.ip.v6 = *( (mDNSv6Addr *) &ipv6PacketInfo->ipi6_addr );
3325 static BOOL loggedMessage = FALSE;
3327 if ( !loggedMessage )
3329 LogMsg( "UDPEndRecv: WSARecvMsg control information error." );
3330 loggedMessage = TRUE;
3338 dlog( kDebugLevelChatty, DEBUG_NAME "packet received\n" );
3339 dlog( kDebugLevelChatty, DEBUG_NAME " size = %d\n", num );
3340 dlog( kDebugLevelChatty, DEBUG_NAME " src = %#a:%u\n", &srcAddr, ntohs( srcPort.NotAnInteger ) );
3341 dlog( kDebugLevelChatty, DEBUG_NAME " dst = %#a:%u\n", &dstAddr, ntohs( dstPort.NotAnInteger ) );
3343 if ( udpSock->ifd != NULL )
3345 dlog( kDebugLevelChatty, DEBUG_NAME " interface = %#a (index=0x%08X)\n", &udpSock->ifd->interfaceInfo.ip, udpSock->ifd->index );
3348 dlog( kDebugLevelChatty, DEBUG_NAME "\n" );
3350 iid = udpSock->ifd ? udpSock->ifd->interfaceInfo.InterfaceID : NULL;
3351 end = ( (mDNSu8 *) &udpSock->packet ) + num;
3353 mDNSCoreReceive( udpSock->m, &udpSock->packet, end, &srcAddr, srcPort, &dstAddr, dstPort, iid );
3360 //===========================================================================================================================
3361 // InterfaceListDidChange
3362 //===========================================================================================================================
3363 void InterfaceListDidChange( mDNS * const inMDNS )
3367 dlog( kDebugLevelInfo, DEBUG_NAME "interface list changed\n" );
3370 // Tear down the existing interfaces and set up new ones using the new IP info.
3372 err = TearDownInterfaceList( inMDNS );
3375 err = SetupInterfaceList( inMDNS );
3378 err = uDNS_SetupDNSConfig( inMDNS );
3381 // Inform clients of the change.
3383 mDNS_ConfigChanged(inMDNS);
3385 // Force mDNS to update.
3387 mDNSCoreMachineSleep( inMDNS, mDNSfalse ); // What is this for? Mac OS X does not do this
3390 //===========================================================================================================================
3391 // ComputerDescriptionDidChange
3392 //===========================================================================================================================
3393 void ComputerDescriptionDidChange( mDNS * const inMDNS )
3395 dlog( kDebugLevelInfo, DEBUG_NAME "computer description has changed\n" );
3399 SetupNiceName( inMDNS );
3402 //===========================================================================================================================
3403 // TCPIPConfigDidChange
3404 //===========================================================================================================================
3405 void TCPIPConfigDidChange( mDNS * const inMDNS )
3409 dlog( kDebugLevelInfo, DEBUG_NAME "TCP/IP config has changed\n" );
3412 err = uDNS_SetupDNSConfig( inMDNS );
3416 //===========================================================================================================================
3417 // DynDNSConfigDidChange
3418 //===========================================================================================================================
3419 void DynDNSConfigDidChange( mDNS * const inMDNS )
3423 dlog( kDebugLevelInfo, DEBUG_NAME "DynDNS config has changed\n" );
3426 SetDomainSecrets( inMDNS );
3428 err = uDNS_SetupDNSConfig( inMDNS );
3432 //===========================================================================================================================
3433 // FileSharingDidChange
3434 //===========================================================================================================================
3435 void FileSharingDidChange( mDNS * const inMDNS )
3437 dlog( kDebugLevelInfo, DEBUG_NAME "File shares has changed\n" );
3440 CheckFileShares( inMDNS );
3443 //===========================================================================================================================
3444 // FilewallDidChange
3445 //===========================================================================================================================
3446 void FirewallDidChange( mDNS * const inMDNS )
3448 dlog( kDebugLevelInfo, DEBUG_NAME "Firewall has changed\n" );
3451 CheckFileShares( inMDNS );
3456 #pragma mark == Utilities ==
3459 //===========================================================================================================================
3461 //===========================================================================================================================
3463 mDNSlocal int getifaddrs( struct ifaddrs **outAddrs )
3467 #if( MDNS_WINDOWS_USE_IPV6_IF_ADDRS )
3469 // Try to the load the GetAdaptersAddresses function from the IP Helpers DLL. This API is only available on Windows
3470 // XP or later. Looking up the symbol at runtime allows the code to still work on older systems without that API.
3472 if( !gIPHelperLibraryInstance )
3474 gIPHelperLibraryInstance = LoadLibrary( TEXT( "Iphlpapi" ) );
3475 if( gIPHelperLibraryInstance )
3477 gGetAdaptersAddressesFunctionPtr =
3478 (GetAdaptersAddressesFunctionPtr) GetProcAddress( gIPHelperLibraryInstance, "GetAdaptersAddresses" );
3479 if( !gGetAdaptersAddressesFunctionPtr )
3483 ok = FreeLibrary( gIPHelperLibraryInstance );
3484 check_translated_errno( ok, GetLastError(), kUnknownErr );
3485 gIPHelperLibraryInstance = NULL;
3490 // Use the new IPv6-capable routine if supported. Otherwise, fall back to the old and compatible IPv4-only code.
3491 // <rdar://problem/4278934> Fall back to using getifaddrs_ipv4 if getifaddrs_ipv6 fails
3492 // <rdar://problem/6145913> Fall back to using getifaddrs_ipv4 if getifaddrs_ipv6 returns no addrs
3494 if( !gGetAdaptersAddressesFunctionPtr || ( ( ( err = getifaddrs_ipv6( outAddrs ) ) != mStatus_NoError ) || ( ( outAddrs != NULL ) && ( *outAddrs == NULL ) ) ) )
3496 err = getifaddrs_ipv4( outAddrs );
3497 require_noerr( err, exit );
3502 err = getifaddrs_ipv4( outAddrs );
3503 require_noerr( err, exit );
3511 #if( MDNS_WINDOWS_USE_IPV6_IF_ADDRS )
3512 //===========================================================================================================================
3514 //===========================================================================================================================
3516 mDNSlocal int getifaddrs_ipv6( struct ifaddrs **outAddrs )
3521 struct ifaddrs * head;
3522 struct ifaddrs ** next;
3523 IP_ADAPTER_ADDRESSES * iaaList;
3525 IP_ADAPTER_ADDRESSES * iaa;
3527 struct ifaddrs * ifa;
3529 check( gGetAdaptersAddressesFunctionPtr );
3535 // Get the list of interfaces. The first call gets the size and the second call gets the actual data.
3536 // This loops to handle the case where the interface changes in the window after getting the size, but before the
3537 // second call completes. A limit of 100 retries is enforced to prevent infinite loops if something else is wrong.
3539 flags = GAA_FLAG_INCLUDE_PREFIX | GAA_FLAG_SKIP_ANYCAST | GAA_FLAG_SKIP_MULTICAST | GAA_FLAG_SKIP_DNS_SERVER | GAA_FLAG_SKIP_FRIENDLY_NAME;
3544 err = gGetAdaptersAddressesFunctionPtr( AF_UNSPEC, flags, NULL, NULL, &iaaListSize );
3545 check( err == ERROR_BUFFER_OVERFLOW );
3546 check( iaaListSize >= sizeof( IP_ADAPTER_ADDRESSES ) );
3548 iaaList = (IP_ADAPTER_ADDRESSES *) malloc( iaaListSize );
3549 require_action( iaaList, exit, err = ERROR_NOT_ENOUGH_MEMORY );
3551 err = gGetAdaptersAddressesFunctionPtr( AF_UNSPEC, flags, NULL, iaaList, &iaaListSize );
3552 if( err == ERROR_SUCCESS ) break;
3557 require( i < 100, exit );
3558 dlog( kDebugLevelWarning, "%s: retrying GetAdaptersAddresses after %d failure(s) (%d %m)\n", __ROUTINE__, i, err, err );
3561 for( iaa = iaaList; iaa; iaa = iaa->Next )
3564 IP_ADAPTER_UNICAST_ADDRESS * addr;
3566 IP_ADAPTER_PREFIX * firstPrefix;
3568 if( iaa->IfIndex > 0xFFFFFF )
3570 dlog( kDebugLevelAlert, DEBUG_NAME "%s: IPv4 ifindex out-of-range (0x%08X)\n", __ROUTINE__, iaa->IfIndex );
3572 if( iaa->Ipv6IfIndex > 0xFF )
3574 dlog( kDebugLevelAlert, DEBUG_NAME "%s: IPv6 ifindex out-of-range (0x%08X)\n", __ROUTINE__, iaa->Ipv6IfIndex );
3577 // For IPv4 interfaces, there seems to be a bug in iphlpapi.dll that causes the
3578 // following code to crash when iterating through the prefix list. This seems
3579 // to occur when iaa->Ipv6IfIndex != 0 when IPv6 is not installed on the host.
3580 // This shouldn't happen according to Microsoft docs which states:
3582 // "Ipv6IfIndex contains 0 if IPv6 is not available on the interface."
3584 // So the data structure seems to be corrupted when we return from
3585 // GetAdaptersAddresses(). The bug seems to occur when iaa->Length <
3586 // sizeof(IP_ADAPTER_ADDRESSES), so when that happens, we'll manually
3587 // modify iaa to have the correct values.
3589 if ( iaa->Length >= sizeof( IP_ADAPTER_ADDRESSES ) )
3591 ipv6IfIndex = iaa->Ipv6IfIndex;
3592 firstPrefix = iaa->FirstPrefix;
3600 // Skip pseudo and tunnel interfaces.
3602 if( ( ( ipv6IfIndex == 1 ) && ( iaa->IfType != IF_TYPE_SOFTWARE_LOOPBACK ) ) || ( iaa->IfType == IF_TYPE_TUNNEL ) )
3607 // Add each address as a separate interface to emulate the way getifaddrs works.
3609 for( addrIndex = 0, addr = iaa->FirstUnicastAddress; addr; ++addrIndex, addr = addr->Next )
3612 IP_ADAPTER_PREFIX * prefix;
3614 struct sockaddr_in ipv4Netmask;
3616 family = addr->Address.lpSockaddr->sa_family;
3617 if( ( family != AF_INET ) && ( family != AF_INET6 ) ) continue;
3619 // <rdar://problem/6220642> iTunes 8: Bonjour doesn't work after upgrading iTunes 8
3620 // Seems as if the problem here is a buggy implementation of some network interface
3621 // driver. It is reporting that is has a link-local address when it is actually
3622 // disconnected. This was causing a problem in AddressToIndexAndMask.
3623 // The solution is to call AddressToIndexAndMask first, and if unable to lookup
3624 // the address, to ignore that address.
3627 memset( &ipv4Netmask, 0, sizeof( ipv4Netmask ) );
3629 if ( family == AF_INET )
3631 err = AddressToIndexAndMask( addr->Address.lpSockaddr, &ipv4Index, ( struct sockaddr* ) &ipv4Netmask );
3640 ifa = (struct ifaddrs *) calloc( 1, sizeof( struct ifaddrs ) );
3641 require_action( ifa, exit, err = WSAENOBUFS );
3644 next = &ifa->ifa_next;
3648 size = strlen( iaa->AdapterName ) + 1;
3649 ifa->ifa_name = (char *) malloc( size );
3650 require_action( ifa->ifa_name, exit, err = WSAENOBUFS );
3651 memcpy( ifa->ifa_name, iaa->AdapterName, size );
3653 // Get interface flags.
3656 if( iaa->OperStatus == IfOperStatusUp ) ifa->ifa_flags |= IFF_UP;
3657 if( iaa->IfType == IF_TYPE_SOFTWARE_LOOPBACK ) ifa->ifa_flags |= IFF_LOOPBACK;
3658 else if ( IsPointToPoint( addr ) ) ifa->ifa_flags |= IFF_POINTTOPOINT;
3659 if( !( iaa->Flags & IP_ADAPTER_NO_MULTICAST ) ) ifa->ifa_flags |= IFF_MULTICAST;
3662 // <rdar://problem/4045657> Interface index being returned is 512
3664 // Windows does not have a uniform scheme for IPv4 and IPv6 interface indexes.
3665 // This code used to shift the IPv4 index up to ensure uniqueness between
3666 // it and IPv6 indexes. Although this worked, it was somewhat confusing to developers, who
3667 // then see interface indexes passed back that don't correspond to anything
3668 // that is seen in Win32 APIs or command line tools like "route". As a relatively
3669 // small percentage of developers are actively using IPv6, it seems to
3670 // make sense to make our use of IPv4 as confusion free as possible.
3671 // So now, IPv6 interface indexes will be shifted up by a
3672 // constant value which will serve to uniquely identify them, and we will
3673 // leave IPv4 interface indexes unmodified.
3677 case AF_INET: ifa->ifa_extra.index = iaa->IfIndex; break;
3678 case AF_INET6: ifa->ifa_extra.index = ipv6IfIndex + kIPv6IfIndexBase; break;
3682 // Get lease lifetime
3684 if ( ( iaa->IfType != IF_TYPE_SOFTWARE_LOOPBACK ) && ( addr->LeaseLifetime != 0 ) && ( addr->ValidLifetime != 0xFFFFFFFF ) )
3686 ifa->ifa_dhcpEnabled = TRUE;
3687 ifa->ifa_dhcpLeaseExpires = time( NULL ) + addr->ValidLifetime;
3691 ifa->ifa_dhcpEnabled = FALSE;
3692 ifa->ifa_dhcpLeaseExpires = 0;
3695 if ( iaa->PhysicalAddressLength == sizeof( ifa->ifa_physaddr ) )
3697 memcpy( ifa->ifa_physaddr, iaa->PhysicalAddress, iaa->PhysicalAddressLength );
3700 // Because we don't get notified of womp changes, we're going to just assume
3701 // that all wired interfaces have it enabled. Before we go to sleep, we'll check
3702 // if the interface actually supports it, and update mDNS->SystemWakeOnLANEnabled
3705 ifa->ifa_womp = ( iaa->IfType == IF_TYPE_ETHERNET_CSMACD ) ? mDNStrue : mDNSfalse;
3713 ifa->ifa_addr = (struct sockaddr *) calloc( 1, (size_t) addr->Address.iSockaddrLength );
3714 require_action( ifa->ifa_addr, exit, err = WSAENOBUFS );
3715 memcpy( ifa->ifa_addr, addr->Address.lpSockaddr, (size_t) addr->Address.iSockaddrLength );
3721 check( ifa->ifa_addr );
3723 // Get subnet mask (IPv4)/link prefix (IPv6). It is specified as a bit length (e.g. 24 for 255.255.255.0).
3729 struct sockaddr_in * sa4;
3731 sa4 = (struct sockaddr_in *) calloc( 1, sizeof( *sa4 ) );
3732 require_action( sa4, exit, err = WSAENOBUFS );
3733 sa4->sin_family = AF_INET;
3734 sa4->sin_addr.s_addr = ipv4Netmask.sin_addr.s_addr;
3736 dlog( kDebugLevelInfo, DEBUG_NAME "%s: IPv4 mask = %s\n", __ROUTINE__, inet_ntoa( sa4->sin_addr ) );
3737 ifa->ifa_netmask = (struct sockaddr *) sa4;
3743 struct sockaddr_in6 *sa6;
3744 char buf[ 256 ] = { 0 };
3745 DWORD buflen = sizeof( buf );
3747 sa6 = (struct sockaddr_in6 *) calloc( 1, sizeof( *sa6 ) );
3748 require_action( sa6, exit, err = WSAENOBUFS );
3749 sa6->sin6_family = AF_INET6;
3750 memset( sa6->sin6_addr.s6_addr, 0xFF, sizeof( sa6->sin6_addr.s6_addr ) );
3751 ifa->ifa_netmask = (struct sockaddr *) sa6;
3753 for ( prefix = firstPrefix; prefix; prefix = prefix->Next )
3756 IN6_ADDR maskedAddr;
3760 // According to MSDN:
3761 // "On Windows Vista and later, the linked IP_ADAPTER_PREFIX structures pointed to by the FirstPrefix member
3762 // include three IP adapter prefixes for each IP address assigned to the adapter. These include the host IP address prefix,
3763 // the subnet IP address prefix, and the subnet broadcast IP address prefix.
3764 // In addition, for each adapter there is a multicast address prefix and a broadcast address prefix.
3765 // On Windows XP with SP1 and later prior to Windows Vista, the linked IP_ADAPTER_PREFIX structures pointed to by the FirstPrefix member
3766 // include only a single IP adapter prefix for each IP address assigned to the adapter."
3768 // We're only interested in the subnet IP address prefix. We'll determine if the prefix is the
3769 // subnet prefix by masking our address with a mask (computed from the prefix length) and see if that is the same
3770 // as the prefix address.
3772 if ( ( prefix->PrefixLength == 0 ) ||
3773 ( prefix->PrefixLength > 128 ) ||
3774 ( addr->Address.iSockaddrLength != prefix->Address.iSockaddrLength ) ||
3775 ( memcmp( addr->Address.lpSockaddr, prefix->Address.lpSockaddr, addr->Address.iSockaddrLength ) == 0 ) )
3782 memset( mask.s6_addr, 0, sizeof( mask.s6_addr ) );
3784 for ( len = (int) prefix->PrefixLength, maskIndex = 0; len > 0; len -= 8 )
3786 uint8_t maskByte = ( len >= 8 ) ? 0xFF : (uint8_t)( ( 0xFFU << ( 8 - len ) ) & 0xFFU );
3787 mask.s6_addr[ maskIndex++ ] = maskByte;
3792 for ( i = 0; i < 16; i++ )
3794 maskedAddr.s6_addr[ i ] = ( ( struct sockaddr_in6* ) addr->Address.lpSockaddr )->sin6_addr.s6_addr[ i ] & mask.s6_addr[ i ];
3799 if ( memcmp( ( ( struct sockaddr_in6* ) prefix->Address.lpSockaddr )->sin6_addr.s6_addr, maskedAddr.s6_addr, sizeof( maskedAddr.s6_addr ) ) == 0 )
3801 memcpy( sa6->sin6_addr.s6_addr, mask.s6_addr, sizeof( mask.s6_addr ) );
3806 WSAAddressToStringA( ( LPSOCKADDR ) sa6, sizeof( struct sockaddr_in6 ), NULL, buf, &buflen );
3807 dlog( kDebugLevelInfo, DEBUG_NAME "%s: IPv6 mask = %s\n", __ROUTINE__, buf );
3825 err = ERROR_SUCCESS;
3830 freeifaddrs( head );
3836 return( (int) err );
3839 #endif // MDNS_WINDOWS_USE_IPV6_IF_ADDRS
3841 //===========================================================================================================================
3843 //===========================================================================================================================
3845 mDNSlocal int getifaddrs_ipv4( struct ifaddrs **outAddrs )
3851 INTERFACE_INFO * buffer;
3852 INTERFACE_INFO * tempBuffer;
3853 INTERFACE_INFO * ifInfo;
3856 struct ifaddrs * head;
3857 struct ifaddrs ** next;
3858 struct ifaddrs * ifa;
3860 sock = INVALID_SOCKET;
3865 // Get the interface list. WSAIoctl is called with SIO_GET_INTERFACE_LIST, but since this does not provide a
3866 // way to determine the size of the interface list beforehand, we have to start with an initial size guess and
3867 // call WSAIoctl repeatedly with increasing buffer sizes until it succeeds. Limit this to 100 tries for safety.
3869 sock = socket( AF_INET, SOCK_DGRAM, IPPROTO_UDP );
3870 err = translate_errno( IsValidSocket( sock ), errno_compat(), kUnknownErr );
3871 require_noerr( err, exit );
3874 size = 16 * sizeof( INTERFACE_INFO );
3877 tempBuffer = (INTERFACE_INFO *) realloc( buffer, size );
3878 require_action( tempBuffer, exit, err = WSAENOBUFS );
3879 buffer = tempBuffer;
3881 err = WSAIoctl( sock, SIO_GET_INTERFACE_LIST, NULL, 0, buffer, size, &actualSize, NULL, NULL );
3888 require_action( n < 100, exit, err = WSAEADDRNOTAVAIL );
3890 size += ( 16 * sizeof( INTERFACE_INFO ) );
3892 check( actualSize <= size );
3893 check( ( actualSize % sizeof( INTERFACE_INFO ) ) == 0 );
3894 n = (int)( actualSize / sizeof( INTERFACE_INFO ) );
3896 // Process the raw interface list and build a linked list of IPv4 interfaces.
3898 for( i = 0; i < n; ++i )
3901 struct sockaddr_in netmask;
3903 ifInfo = &buffer[ i ];
3904 if( ifInfo->iiAddress.Address.sa_family != AF_INET )
3909 // <rdar://problem/6220642> iTunes 8: Bonjour doesn't work after upgrading iTunes 8
3910 // See comment in getifaddrs_ipv6
3913 memset( &netmask, 0, sizeof( netmask ) );
3914 err = AddressToIndexAndMask( ( struct sockaddr* ) &ifInfo->iiAddress.AddressIn, &ifIndex, ( struct sockaddr* ) &netmask );
3921 ifa = (struct ifaddrs *) calloc( 1, sizeof( struct ifaddrs ) );
3922 require_action( ifa, exit, err = WSAENOBUFS );
3925 next = &ifa->ifa_next;
3929 ifa->ifa_name = (char *) malloc( 16 );
3930 require_action( ifa->ifa_name, exit, err = WSAENOBUFS );
3931 _snprintf( ifa->ifa_name, 16, "%d", i + 1 );
3933 // Get interface flags.
3935 ifa->ifa_flags = (u_int) ifInfo->iiFlags;
3939 if ( ifInfo->iiAddress.Address.sa_family == AF_INET )
3941 struct sockaddr_in * sa4;
3943 sa4 = &ifInfo->iiAddress.AddressIn;
3944 ifa->ifa_addr = (struct sockaddr *) calloc( 1, sizeof( *sa4 ) );
3945 require_action( ifa->ifa_addr, exit, err = WSAENOBUFS );
3946 memcpy( ifa->ifa_addr, sa4, sizeof( *sa4 ) );
3948 ifa->ifa_netmask = (struct sockaddr*) calloc(1, sizeof( *sa4 ) );
3949 require_action( ifa->ifa_netmask, exit, err = WSAENOBUFS );
3951 // <rdar://problem/4076478> Service won't start on Win2K. The address
3952 // family field was not being initialized.
3954 ifa->ifa_netmask->sa_family = AF_INET;
3955 ( ( struct sockaddr_in* ) ifa->ifa_netmask )->sin_addr = netmask.sin_addr;
3956 ifa->ifa_extra.index = ifIndex;
3960 // Emulate an interface index.
3962 ifa->ifa_extra.index = (uint32_t)( i + 1 );
3979 freeifaddrs( head );
3985 if( sock != INVALID_SOCKET )
3987 closesocket( sock );
3992 //===========================================================================================================================
3994 //===========================================================================================================================
3996 mDNSlocal void freeifaddrs( struct ifaddrs *inIFAs )
4001 // Free each piece of the structure. Set to null after freeing to handle macro-aliased fields.
4003 for( p = inIFAs; p; p = q )
4009 free( p->ifa_name );
4014 free( p->ifa_addr );
4017 if( p->ifa_netmask )
4019 free( p->ifa_netmask );
4020 p->ifa_netmask = NULL;
4022 if( p->ifa_broadaddr )
4024 free( p->ifa_broadaddr );
4025 p->ifa_broadaddr = NULL;
4027 if( p->ifa_dstaddr )
4029 free( p->ifa_dstaddr );
4030 p->ifa_dstaddr = NULL;
4034 free( p->ifa_data );
4041 //===========================================================================================================================
4042 // GetPrimaryInterface
4043 //===========================================================================================================================
4046 GetPrimaryInterface()
4048 PMIB_IPFORWARDTABLE pIpForwardTable = NULL;
4050 BOOL bOrder = FALSE;
4054 unsigned long int i;
4056 // Find out how big our buffer needs to be.
4058 err = GetIpForwardTable(NULL, &dwSize, bOrder);
4059 require_action( err == ERROR_INSUFFICIENT_BUFFER, exit, err = kUnknownErr );
4061 // Allocate the memory for the table
4063 pIpForwardTable = (PMIB_IPFORWARDTABLE) malloc( dwSize );
4064 require_action( pIpForwardTable, exit, err = kNoMemoryErr );
4066 // Now get the table.
4068 err = GetIpForwardTable(pIpForwardTable, &dwSize, bOrder);
4069 require_noerr( err, exit );
4071 // Search for the row in the table we want.
4073 for ( i = 0; i < pIpForwardTable->dwNumEntries; i++)
4075 // Look for a default route
4077 if ( pIpForwardTable->table[i].dwForwardDest == 0 )
4079 if ( index && ( pIpForwardTable->table[i].dwForwardMetric1 >= metric ) )
4084 index = pIpForwardTable->table[i].dwForwardIfIndex;
4085 metric = pIpForwardTable->table[i].dwForwardMetric1;
4091 if ( pIpForwardTable != NULL )
4093 free( pIpForwardTable );
4099 //===========================================================================================================================
4100 // AddressToIndexAndMask
4101 //===========================================================================================================================
4104 AddressToIndexAndMask( struct sockaddr * addr, uint32_t * ifIndex, struct sockaddr * mask )
4106 // Before calling AddIPAddress we use GetIpAddrTable to get
4107 // an adapter to which we can add the IP.
4109 PMIB_IPADDRTABLE pIPAddrTable = NULL;
4111 mStatus err = mStatus_UnknownErr;
4114 // For now, this is only for IPv4 addresses. That is why we can safely cast
4115 // addr's to sockaddr_in.
4117 require_action( addr->sa_family == AF_INET, exit, err = mStatus_UnknownErr );
4119 // Make an initial call to GetIpAddrTable to get the
4120 // necessary size into the dwSize variable
4122 for ( i = 0; i < 100; i++ )
4124 err = GetIpAddrTable( pIPAddrTable, &dwSize, 0 );
4126 if ( err != ERROR_INSUFFICIENT_BUFFER )
4131 pIPAddrTable = (MIB_IPADDRTABLE *) realloc( pIPAddrTable, dwSize );
4132 require_action( pIPAddrTable, exit, err = WSAENOBUFS );
4135 require_noerr( err, exit );
4136 err = mStatus_UnknownErr;
4138 for ( i = 0; i < pIPAddrTable->dwNumEntries; i++ )
4140 if ( ( ( struct sockaddr_in* ) addr )->sin_addr.s_addr == pIPAddrTable->table[i].dwAddr )
4142 *ifIndex = pIPAddrTable->table[i].dwIndex;
4143 ( ( struct sockaddr_in*) mask )->sin_addr.s_addr = pIPAddrTable->table[i].dwMask;
4144 err = mStatus_NoError;
4153 free( pIPAddrTable );
4159 //===========================================================================================================================
4160 // CanReceiveUnicast
4161 //===========================================================================================================================
4163 mDNSlocal mDNSBool CanReceiveUnicast( void )
4167 struct sockaddr_in addr;
4169 // Try to bind to the port without the SO_REUSEADDR option to test if someone else has already bound to it.
4171 sock = socket( AF_INET, SOCK_DGRAM, IPPROTO_UDP );
4172 check_translated_errno( IsValidSocket( sock ), errno_compat(), kUnknownErr );
4173 ok = IsValidSocket( sock );
4176 mDNSPlatformMemZero( &addr, sizeof( addr ) );
4177 addr.sin_family = AF_INET;
4178 addr.sin_port = MulticastDNSPort.NotAnInteger;
4179 addr.sin_addr.s_addr = htonl( INADDR_ANY );
4181 ok = ( bind( sock, (struct sockaddr *) &addr, sizeof( addr ) ) == 0 );
4182 close_compat( sock );
4185 dlog( kDebugLevelInfo, DEBUG_NAME "Unicast UDP responses %s\n", ok ? "okay" : "*not allowed*" );
4189 //===========================================================================================================================
4191 //===========================================================================================================================
4193 mDNSlocal mDNSBool IsPointToPoint( IP_ADAPTER_UNICAST_ADDRESS * addr )
4195 struct ifaddrs * addrs = NULL;
4196 struct ifaddrs * p = NULL;
4198 mDNSBool ret = mDNSfalse;
4200 // For now, only works for IPv4 interfaces
4202 if ( addr->Address.lpSockaddr->sa_family == AF_INET )
4204 // The getifaddrs_ipv4 call will give us correct information regarding IFF_POINTTOPOINT flags.
4206 err = getifaddrs_ipv4( &addrs );
4207 require_noerr( err, exit );
4209 for ( p = addrs; p; p = p->ifa_next )
4211 if ( ( addr->Address.lpSockaddr->sa_family == p->ifa_addr->sa_family ) &&
4212 ( ( ( struct sockaddr_in* ) addr->Address.lpSockaddr )->sin_addr.s_addr == ( ( struct sockaddr_in* ) p->ifa_addr )->sin_addr.s_addr ) )
4214 ret = ( p->ifa_flags & IFF_POINTTOPOINT ) ? mDNStrue : mDNSfalse;
4224 freeifaddrs( addrs );
4230 //===========================================================================================================================
4231 // GetWindowsVersionString
4232 //===========================================================================================================================
4234 mDNSlocal OSStatus GetWindowsVersionString( char *inBuffer, size_t inBufferSize )
4236 #if( !defined( VER_PLATFORM_WIN32_CE ) )
4237 #define VER_PLATFORM_WIN32_CE 3
4241 OSVERSIONINFO osInfo;
4243 const char * versionString;
4249 versionString = "unknown Windows version";
4251 osInfo.dwOSVersionInfoSize = sizeof( OSVERSIONINFO );
4252 ok = GetVersionEx( &osInfo );
4253 err = translate_errno( ok, (OSStatus) GetLastError(), kUnknownErr );
4254 require_noerr( err, exit );
4256 platformID = osInfo.dwPlatformId;
4257 majorVersion = osInfo.dwMajorVersion;
4258 minorVersion = osInfo.dwMinorVersion;
4259 buildNumber = osInfo.dwBuildNumber & 0xFFFF;
4261 if( ( platformID == VER_PLATFORM_WIN32_WINDOWS ) && ( majorVersion == 4 ) )
4263 if( ( minorVersion < 10 ) && ( buildNumber == 950 ) )
4265 versionString = "Windows 95";
4267 else if( ( minorVersion < 10 ) && ( ( buildNumber > 950 ) && ( buildNumber <= 1080 ) ) )
4269 versionString = "Windows 95 SP1";
4271 else if( ( minorVersion < 10 ) && ( buildNumber > 1080 ) )
4273 versionString = "Windows 95 OSR2";
4275 else if( ( minorVersion == 10 ) && ( buildNumber == 1998 ) )
4277 versionString = "Windows 98";
4279 else if( ( minorVersion == 10 ) && ( ( buildNumber > 1998 ) && ( buildNumber < 2183 ) ) )
4281 versionString = "Windows 98 SP1";
4283 else if( ( minorVersion == 10 ) && ( buildNumber >= 2183 ) )
4285 versionString = "Windows 98 SE";
4287 else if( minorVersion == 90 )
4289 versionString = "Windows ME";
4292 else if( platformID == VER_PLATFORM_WIN32_NT )
4294 if( ( majorVersion == 3 ) && ( minorVersion == 51 ) )
4296 versionString = "Windows NT 3.51";
4298 else if( ( majorVersion == 4 ) && ( minorVersion == 0 ) )
4300 versionString = "Windows NT 4";
4302 else if( ( majorVersion == 5 ) && ( minorVersion == 0 ) )
4304 versionString = "Windows 2000";
4306 else if( ( majorVersion == 5 ) && ( minorVersion == 1 ) )
4308 versionString = "Windows XP";
4310 else if( ( majorVersion == 5 ) && ( minorVersion == 2 ) )
4312 versionString = "Windows Server 2003";
4315 else if( platformID == VER_PLATFORM_WIN32_CE )
4317 versionString = "Windows CE";
4321 if( inBuffer && ( inBufferSize > 0 ) )
4324 strncpy( inBuffer, versionString, inBufferSize );
4325 inBuffer[ inBufferSize ] = '\0';
4330 //===========================================================================================================================
4332 //===========================================================================================================================
4335 RegQueryString( HKEY key, LPCSTR valueName, LPSTR * string, DWORD * stringLen, DWORD * enabled )
4341 *stringLen = MAX_ESCAPED_DOMAIN_NAME;
4352 *string = (char*) malloc( *stringLen );
4353 require_action( *string, exit, err = mStatus_NoMemoryErr );
4355 err = RegQueryValueExA( key, valueName, 0, &type, (LPBYTE) *string, stringLen );
4359 while ( ( err == ERROR_MORE_DATA ) && ( i < 100 ) );
4361 require_noerr_quiet( err, exit );
4365 DWORD dwSize = sizeof( DWORD );
4367 err = RegQueryValueEx( key, TEXT("Enabled"), NULL, NULL, (LPBYTE) enabled, &dwSize );
4378 //===========================================================================================================================
4380 //===========================================================================================================================
4382 mDNSlocal mStatus StringToAddress( mDNSAddr * ip, LPSTR string )
4384 struct sockaddr_in6 sa6;
4385 struct sockaddr_in sa4;
4389 sa6.sin6_family = AF_INET6;
4390 dwSize = sizeof( sa6 );
4392 err = WSAStringToAddressA( string, AF_INET6, NULL, (struct sockaddr*) &sa6, &dwSize );
4394 if ( err == mStatus_NoError )
4396 err = SetupAddr( ip, (struct sockaddr*) &sa6 );
4397 require_noerr( err, exit );
4401 sa4.sin_family = AF_INET;
4402 dwSize = sizeof( sa4 );
4404 err = WSAStringToAddressA( string, AF_INET, NULL, (struct sockaddr*) &sa4, &dwSize );
4405 err = translate_errno( err == 0, WSAGetLastError(), kUnknownErr );
4406 require_noerr( err, exit );
4408 err = SetupAddr( ip, (struct sockaddr*) &sa4 );
4409 require_noerr( err, exit );
4417 //===========================================================================================================================
4419 //===========================================================================================================================
4421 mDNSlocal struct ifaddrs*
4422 myGetIfAddrs(int refresh)
4424 static struct ifaddrs *ifa = NULL;
4440 //===========================================================================================================================
4442 //===========================================================================================================================
4445 TCHARtoUTF8( const TCHAR *inString, char *inBuffer, size_t inBufferSize )
4447 #if( defined( UNICODE ) || defined( _UNICODE ) )
4451 len = WideCharToMultiByte( CP_UTF8, 0, inString, -1, inBuffer, (int) inBufferSize, NULL, NULL );
4452 err = translate_errno( len > 0, errno_compat(), kUnknownErr );
4453 require_noerr( err, exit );
4458 return( WindowsLatin1toUTF8( inString, inBuffer, inBufferSize ) );
4462 //===========================================================================================================================
4463 // WindowsLatin1toUTF8
4464 //===========================================================================================================================
4467 WindowsLatin1toUTF8( const char *inString, char *inBuffer, size_t inBufferSize )
4475 // Windows doesn't support going directly from Latin-1 to UTF-8 so we have to go from Latin-1 to UTF-16 first.
4477 len = MultiByteToWideChar( CP_ACP, 0, inString, -1, NULL, 0 );
4478 err = translate_errno( len > 0, errno_compat(), kUnknownErr );
4479 require_noerr( err, exit );
4481 utf16 = (WCHAR *) malloc( len * sizeof( *utf16 ) );
4482 require_action( utf16, exit, err = kNoMemoryErr );
4484 len = MultiByteToWideChar( CP_ACP, 0, inString, -1, utf16, len );
4485 err = translate_errno( len > 0, errno_compat(), kUnknownErr );
4486 require_noerr( err, exit );
4488 // Now convert the temporary UTF-16 to UTF-8.
4490 len = WideCharToMultiByte( CP_UTF8, 0, utf16, -1, inBuffer, (int) inBufferSize, NULL, NULL );
4491 err = translate_errno( len > 0, errno_compat(), kUnknownErr );
4492 require_noerr( err, exit );
4495 if( utf16 ) free( utf16 );
4499 //===========================================================================================================================
4501 //===========================================================================================================================
4504 TCPCloseSocket( TCPSocket * sock )
4506 dlog( kDebugLevelChatty, DEBUG_NAME "closing TCPSocket 0x%x:%d\n", sock, sock->fd );
4508 if ( sock->fd != INVALID_SOCKET )
4510 closesocket( sock->fd );
4511 sock->fd = INVALID_SOCKET;
4515 //===========================================================================================================================
4517 //===========================================================================================================================
4520 UDPCloseSocket( UDPSocket * sock )
4522 dlog( kDebugLevelChatty, DEBUG_NAME "closing UDPSocket %d\n", sock->fd );
4524 if ( sock->fd != INVALID_SOCKET )
4526 mDNSPollUnregisterSocket( sock->fd );
4527 closesocket( sock->fd );
4528 sock->fd = INVALID_SOCKET;
4532 //===========================================================================================================================
4534 //===========================================================================================================================
4536 mDNSlocal mStatus SetupAddr(mDNSAddr *ip, const struct sockaddr *const sa)
4538 if (!sa) { LogMsg("SetupAddr ERROR: NULL sockaddr"); return(mStatus_Invalid); }
4540 if (sa->sa_family == AF_INET)
4542 struct sockaddr_in *ifa_addr = (struct sockaddr_in *)sa;
4543 ip->type = mDNSAddrType_IPv4;
4544 ip->ip.v4.NotAnInteger = ifa_addr->sin_addr.s_addr;
4545 return(mStatus_NoError);
4548 if (sa->sa_family == AF_INET6)
4550 struct sockaddr_in6 *ifa_addr = (struct sockaddr_in6 *)sa;
4551 ip->type = mDNSAddrType_IPv6;
4552 if (IN6_IS_ADDR_LINKLOCAL(&ifa_addr->sin6_addr)) ifa_addr->sin6_addr.u.Word[1] = 0;
4553 ip->ip.v6 = *(mDNSv6Addr*)&ifa_addr->sin6_addr;
4554 return(mStatus_NoError);
4557 LogMsg("SetupAddr invalid sa_family %d", sa->sa_family);
4558 return(mStatus_Invalid);
4561 mDNSlocal void GetDDNSFQDN( domainname *const fqdn )
4575 // Get info from Bonjour registry key
4577 err = RegCreateKey( HKEY_LOCAL_MACHINE, kServiceParametersNode TEXT("\\DynDNS\\Setup\\") kServiceDynDNSHostNames, &key );
4578 require_noerr( err, exit );
4580 err = RegQueryString( key, "", &name, &dwSize, &enabled );
4581 if ( !err && ( name[0] != '\0' ) && enabled )
4583 if ( !MakeDomainNameFromDNSNameString( fqdn, name ) || !fqdn->c[0] )
4585 dlog( kDebugLevelError, "bad DDNS host name in registry: %s", name[0] ? name : "(unknown)");
4605 mDNSlocal void GetDDNSDomains( DNameListElem ** domains, LPCWSTR lpSubKey )
4607 mDNSlocal void GetDDNSConfig( DNameListElem ** domains, LPCSTR lpSubKey )
4610 char subKeyName[kRegistryMaxKeyLength + 1];
4627 err = RegCreateKey( HKEY_LOCAL_MACHINE, lpSubKey, &key );
4628 require_noerr( err, exit );
4630 // Get information about this node
4632 err = RegQueryInfoKey( key, NULL, NULL, NULL, &cSubKeys, &cbMaxSubKey, &cchMaxClass, NULL, NULL, NULL, NULL, NULL );
4633 require_noerr( err, exit );
4635 for ( i = 0; i < cSubKeys; i++)
4639 dwSize = kRegistryMaxKeyLength;
4641 err = RegEnumKeyExA( key, i, subKeyName, &dwSize, NULL, NULL, NULL, NULL );
4645 err = RegOpenKeyExA( key, subKeyName, 0, KEY_READ, &subKey );
4646 require_noerr( err, exit );
4648 dwSize = sizeof( DWORD );
4649 err = RegQueryValueExA( subKey, "Enabled", NULL, NULL, (LPBYTE) &enabled, &dwSize );
4651 if ( !err && ( subKeyName[0] != '\0' ) && enabled )
4653 if ( !MakeDomainNameFromDNSNameString( &dname, subKeyName ) || !dname.c[0] )
4655 dlog( kDebugLevelError, "bad DDNS domain in registry: %s", subKeyName[0] ? subKeyName : "(unknown)");
4659 DNameListElem * domain = (DNameListElem*) malloc( sizeof( DNameListElem ) );
4660 require_action( domain, exit, err = mStatus_NoMemoryErr );
4662 AssignDomainName(&domain->name, &dname);
4663 domain->next = *domains;
4669 RegCloseKey( subKey );
4678 RegCloseKey( subKey );
4687 mDNSlocal void SetDomainSecret( mDNS * const m, const domainname * inDomain )
4689 char domainUTF8[ 256 ];
4690 DomainAuthInfo *foundInList;
4691 DomainAuthInfo *ptr;
4692 char outDomain[ 256 ];
4694 char outSecret[ 256 ];
4697 ConvertDomainNameToCString( inDomain, domainUTF8 );
4699 // If we're able to find a secret for this domain
4701 if ( LsaGetSecret( domainUTF8, outDomain, sizeof( outDomain ), outKey, sizeof( outKey ), outSecret, sizeof( outSecret ) ) )
4706 // Tell the core about this secret
4708 MakeDomainNameFromDNSNameString( &domain, outDomain );
4709 MakeDomainNameFromDNSNameString( &key, outKey );
4711 for (foundInList = m->AuthInfoList; foundInList; foundInList = foundInList->next)
4712 if (SameDomainName(&foundInList->domain, &domain ) ) break;
4718 ptr = (DomainAuthInfo*)malloc(sizeof(DomainAuthInfo));
4719 require_action( ptr, exit, err = mStatus_NoMemoryErr );
4722 err = mDNS_SetSecretForDomain(m, ptr, &domain, &key, outSecret, NULL, NULL, FALSE );
4723 require_action( err != mStatus_BadParamErr, exit, if (!foundInList ) mDNSPlatformMemFree( ptr ) );
4725 debugf("Setting shared secret for zone %s with key %##s", outDomain, key.c);
4733 mDNSlocal VOID CALLBACK
4734 CheckFileSharesProc( LPVOID arg, DWORD dwTimerLowValue, DWORD dwTimerHighValue )
4736 mDNS * const m = ( mDNS * const ) arg;
4738 ( void ) dwTimerLowValue;
4739 ( void ) dwTimerHighValue;
4741 CheckFileShares( m );
4744 mDNSlocal unsigned __stdcall
4745 SMBRegistrationThread( void * arg )
4747 mDNS * const m = ( mDNS * const ) arg;
4748 DNSServiceRef sref = NULL;
4749 HANDLE handles[ 3 ];
4750 mDNSu8 txtBuf[ 256 ];
4754 mDNSIPPort port = { { SMBPortAsNumber >> 8, SMBPortAsNumber & 0xFF } };
4755 DNSServiceErrorType err;
4757 DEBUG_UNUSED( arg );
4759 handles[ 0 ] = gSMBThreadStopEvent;
4760 handles[ 1 ] = gSMBThreadRegisterEvent;
4761 handles[ 2 ] = gSMBThreadDeregisterEvent;
4763 memset( txtBuf, 0, sizeof( txtBuf ) );
4765 keyLen = strlen( "netbios=" );
4766 valLen = strlen( m->p->nbname );
4767 require_action( valLen < 32, exit, err = kUnknownErr ); // This should never happen, but check to avoid further memory corruption
4768 *txtPtr++ = ( mDNSu8 ) ( keyLen + valLen );
4769 memcpy( txtPtr, "netbios=", keyLen );
4771 if ( valLen ) { memcpy( txtPtr, m->p->nbname, valLen ); txtPtr += ( mDNSu8 ) valLen; }
4772 keyLen = strlen( "domain=" );
4773 valLen = strlen( m->p->nbdomain );
4774 require_action( valLen < 32, exit, err = kUnknownErr ); // This should never happen, but check to avoid further memory corruption
4775 *txtPtr++ = ( mDNSu8 )( keyLen + valLen );
4776 memcpy( txtPtr, "domain=", keyLen );
4778 if ( valLen ) { memcpy( txtPtr, m->p->nbdomain, valLen ); txtPtr += valLen; }
4784 ret = WaitForMultipleObjects( 3, handles, FALSE, INFINITE );
4786 if ( ret != WAIT_FAILED )
4788 if ( ret == kSMBStopEvent )
4792 else if ( ret == kSMBRegisterEvent )
4794 err = gDNSServiceRegister( &sref, 0, 0, NULL, "_smb._tcp,_file", NULL, NULL, ( uint16_t ) port.NotAnInteger, ( mDNSu16 )( txtPtr - txtBuf ), txtBuf, NULL, NULL );
4798 LogMsg( "SMBRegistrationThread: DNSServiceRegister returned %d\n", err );
4803 else if ( ret == kSMBDeregisterEvent )
4807 gDNSServiceRefDeallocate( sref );
4814 LogMsg( "SMBRegistrationThread: WaitForMultipleObjects returned %d\n", GetLastError() );
4823 gDNSServiceRefDeallocate( sref );
4827 SetEvent( gSMBThreadQuitEvent );
4833 CheckFileShares( mDNS * const m )
4835 PSHARE_INFO_1 bufPtr = ( PSHARE_INFO_1 ) NULL;
4836 DWORD entriesRead = 0;
4837 DWORD totalEntries = 0;
4839 mDNSBool advertise = mDNSfalse;
4840 mDNSBool fileSharing = mDNSfalse;
4841 mDNSBool printSharing = mDNSfalse;
4849 // Only do this if we're not shutting down
4851 require_action_quiet( m->AdvertiseLocalAddresses && !m->ShutdownTime, exit, err = kNoErr );
4853 err = RegCreateKey( HKEY_LOCAL_MACHINE, kServiceParametersNode L"\\Services\\SMB", &key );
4857 DWORD dwSize = sizeof( DWORD );
4858 RegQueryValueEx( key, L"Advertise", NULL, NULL, (LPBYTE) &advertise, &dwSize );
4861 if ( advertise && mDNSIsFileAndPrintSharingEnabled( &retry ) )
4863 dlog( kDebugLevelTrace, DEBUG_NAME "Sharing is enabled\n" );
4865 res = NetShareEnum( NULL, 1, ( LPBYTE* )&bufPtr, MAX_PREFERRED_LENGTH, &entriesRead, &totalEntries, &resume );
4867 if ( ( res == ERROR_SUCCESS ) || ( res == ERROR_MORE_DATA ) )
4869 PSHARE_INFO_1 p = bufPtr;
4872 for( i = 0; i < entriesRead; i++ )
4874 // We are only interested if the user is sharing anything other
4875 // than the built-in "print$" source
4877 if ( ( p->shi1_type == STYPE_DISKTREE ) && ( wcscmp( p->shi1_netname, TEXT( "print$" ) ) != 0 ) )
4879 fileSharing = mDNStrue;
4881 else if ( p->shi1_type == STYPE_PRINTQ )
4883 printSharing = mDNStrue;
4889 NetApiBufferFree( bufPtr );
4893 else if ( res == NERR_ServerNotStarted )
4902 LARGE_INTEGER liTimeout;
4904 qwTimeout = -m->p->checkFileSharesTimeout * 10000000;
4905 liTimeout.LowPart = ( DWORD )( qwTimeout & 0xFFFFFFFF );
4906 liTimeout.HighPart = ( LONG )( qwTimeout >> 32 );
4908 SetWaitableTimer( m->p->checkFileSharesTimer, &liTimeout, 0, CheckFileSharesProc, m, FALSE );
4911 if ( !m->p->smbFileSharing && fileSharing )
4915 if ( !gDNSSDLibrary )
4917 gDNSSDLibrary = LoadLibrary( TEXT( "dnssd.dll" ) );
4918 require_action( gDNSSDLibrary, exit, err = GetLastError() );
4921 if ( !gDNSServiceRegister )
4923 gDNSServiceRegister = ( DNSServiceRegisterFunc ) GetProcAddress( gDNSSDLibrary, "DNSServiceRegister" );
4924 require_action( gDNSServiceRegister, exit, err = GetLastError() );
4927 if ( !gDNSServiceRefDeallocate )
4929 gDNSServiceRefDeallocate = ( DNSServiceRefDeallocateFunc ) GetProcAddress( gDNSSDLibrary, "DNSServiceRefDeallocate" );
4930 require_action( gDNSServiceRefDeallocate, exit, err = GetLastError() );
4933 if ( !gSMBThreadRegisterEvent )
4935 gSMBThreadRegisterEvent = CreateEvent( NULL, FALSE, FALSE, NULL );
4936 require_action( gSMBThreadRegisterEvent != NULL, exit, err = GetLastError() );
4939 if ( !gSMBThreadDeregisterEvent )
4941 gSMBThreadDeregisterEvent = CreateEvent( NULL, FALSE, FALSE, NULL );
4942 require_action( gSMBThreadDeregisterEvent != NULL, exit, err = GetLastError() );
4945 if ( !gSMBThreadStopEvent )
4947 gSMBThreadStopEvent = CreateEvent( NULL, FALSE, FALSE, NULL );
4948 require_action( gSMBThreadStopEvent != NULL, exit, err = GetLastError() );
4951 if ( !gSMBThreadQuitEvent )
4953 gSMBThreadQuitEvent = CreateEvent( NULL, FALSE, FALSE, NULL );
4954 require_action( gSMBThreadQuitEvent != NULL, exit, err = GetLastError() );
4957 gSMBThread = ( HANDLE ) _beginthreadex( NULL, 0, SMBRegistrationThread, m, 0, NULL );
4958 require_action( gSMBThread != NULL, exit, err = GetLastError() );
4961 SetEvent( gSMBThreadRegisterEvent );
4963 m->p->smbFileSharing = mDNStrue;
4965 else if ( m->p->smbFileSharing && !fileSharing )
4967 dlog( kDebugLevelTrace, DEBUG_NAME "deregistering smb type\n" );
4969 if ( gSMBThreadDeregisterEvent != NULL )
4971 SetEvent( gSMBThreadDeregisterEvent );
4974 m->p->smbFileSharing = mDNSfalse;
4986 IsWOMPEnabled( mDNS * const m )
4990 mDNSInterfaceData * ifd;
4994 for( ifd = m->p->interfaceList; ifd; ifd = ifd->next )
4996 if ( IsWOMPEnabledForAdapter( ifd->name ) )
5007 IsWOMPEnabledForAdapter( const char * adapterName )
5012 HANDLE handle = INVALID_HANDLE_VALUE;
5013 NDIS_PNP_CAPABILITIES * pNPC = NULL;
5017 require_action( adapterName != NULL, exit, ok = FALSE );
5019 dlog( kDebugLevelTrace, DEBUG_NAME "IsWOMPEnabledForAdapter: %s\n", adapterName );
5021 // Construct a device name to pass to CreateFile
5023 strncpy_s( fileName, sizeof( fileName ), DEVICE_PREFIX, strlen( DEVICE_PREFIX ) );
5024 strcat_s( fileName, sizeof( fileName ), adapterName );
5025 handle = CreateFileA( fileName, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, INVALID_HANDLE_VALUE );
5026 require_action ( handle != INVALID_HANDLE_VALUE, exit, ok = FALSE );
5028 // We successfully opened the driver, format the IOCTL to pass the driver.
5030 oid = OID_PNP_CAPABILITIES;
5031 pNPC = ( NDIS_PNP_CAPABILITIES * ) malloc( sizeof( NDIS_PNP_CAPABILITIES ) );
5032 require_action( pNPC != NULL, exit, ok = FALSE );
5033 ok = ( mDNSu8 ) DeviceIoControl( handle, IOCTL_NDIS_QUERY_GLOBAL_STATS, &oid, sizeof( oid ), pNPC, sizeof( NDIS_PNP_CAPABILITIES ), &count, NULL );
5034 err = translate_errno( ok, GetLastError(), kUnknownErr );
5035 require_action( !err, exit, ok = FALSE );
5036 ok = ( mDNSu8 ) ( ( count == sizeof( NDIS_PNP_CAPABILITIES ) ) && ( pNPC->Flags & NDIS_DEVICE_WAKE_ON_MAGIC_PACKET_ENABLE ) );
5045 if ( handle != INVALID_HANDLE_VALUE )
5047 CloseHandle( handle );
5050 dlog( kDebugLevelTrace, DEBUG_NAME "IsWOMPEnabledForAdapter returns %s\n", ok ? "true" : "false" );
5052 return ( mDNSu8 ) ok;
5056 SendWakeupPacket( mDNS * const inMDNS, LPSOCKADDR addr, INT addrlen, const char * buf, INT buflen, INT numTries, INT msecSleep )
5058 mDNSBool repeat = ( numTries == 1 ) ? mDNStrue : mDNSfalse;
5065 sock = socket( addr->sa_family, SOCK_DGRAM, IPPROTO_UDP );
5066 require_action( sock != INVALID_SOCKET, exit, err = mStatus_UnknownErr );
5068 while ( numTries-- )
5070 num = sendto( sock, ( const char* ) buf, buflen, 0, addr, addrlen );
5072 if ( num != buflen )
5074 LogMsg( "SendWakeupPacket error: sent %d bytes: %d\n", num, WSAGetLastError() );
5079 num = sendto( sock, buf, buflen, 0, addr, addrlen );
5081 if ( num != buflen )
5083 LogMsg( "SendWakeupPacket error: sent %d bytes: %d\n", num, WSAGetLastError() );
5095 if ( sock != INVALID_SOCKET )
5097 closesocket( sock );
5101 mDNSlocal void _cdecl
5102 SendMulticastWakeupPacket( void *arg )
5104 MulticastWakeupStruct *info = ( MulticastWakeupStruct* ) arg;
5108 SendWakeupPacket( info->inMDNS, ( LPSOCKADDR ) &info->addr, sizeof( info->addr ), ( const char* ) info->data, sizeof( info->data ), info->numTries, info->msecSleep );
5115 mDNSexport void FreeEtcHosts(mDNS *const m, AuthRecord *const rr, mStatus result)
5119 DEBUG_UNUSED( result );