| /* -*- Mode: C; tab-width: 4 -*- |
| * |
| * Copyright (c) 2002-2004 Apple Computer, Inc. All rights reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| |
| To Do: |
| |
| - Get unicode name of machine for nice name instead of just the host name. |
| - Use the IPv6 Internet Connection Firewall API to allow IPv6 mDNS without manually changing the firewall. |
| - Get DNS server address(es) from Windows and provide them to the uDNS layer. |
| - Implement TCP support for truncated packets (only stubs now). |
| |
| */ |
| |
| #include <stdarg.h> |
| #include <stddef.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <crtdbg.h> |
| #include <string.h> |
| |
| #include "CommonServices.h" |
| #include "DebugServices.h" |
| #include "Firewall.h" |
| #include "RegNames.h" |
| #include "Secret.h" |
| #include <dns_sd.h> |
| |
| #include <Iphlpapi.h> |
| #include <mswsock.h> |
| #include <process.h> |
| #include <ntsecapi.h> |
| #include <lm.h> |
| #include <winioctl.h> |
| #include <ntddndis.h> // This defines the IOCTL constants. |
| |
| #include "mDNSEmbeddedAPI.h" |
| #include "GenLinkedList.h" |
| #include "DNSCommon.h" |
| #include "mDNSWin32.h" |
| |
| #if 0 |
| #pragma mark == Constants == |
| #endif |
| |
| //=========================================================================================================================== |
| // Constants |
| //=========================================================================================================================== |
| |
| #define DEBUG_NAME "[mDNSWin32] " |
| |
| #define MDNS_WINDOWS_USE_IPV6_IF_ADDRS 1 |
| #define MDNS_WINDOWS_ENABLE_IPV4 1 |
| #define MDNS_WINDOWS_ENABLE_IPV6 1 |
| #define MDNS_FIX_IPHLPAPI_PREFIX_BUG 1 |
| #define MDNS_SET_HINFO_STRINGS 0 |
| |
| #define kMDNSDefaultName "My Computer" |
| |
| #define kWinSockMajorMin 2 |
| #define kWinSockMinorMin 2 |
| |
| #define kRegistryMaxKeyLength 255 |
| #define kRegistryMaxValueName 16383 |
| |
| static GUID kWSARecvMsgGUID = WSAID_WSARECVMSG; |
| |
| #define kIPv6IfIndexBase (10000000L) |
| #define SMBPortAsNumber 445 |
| #define DEVICE_PREFIX "\\\\.\\" |
| |
| #if 0 |
| #pragma mark == Prototypes == |
| #endif |
| |
| //=========================================================================================================================== |
| // Prototypes |
| //=========================================================================================================================== |
| |
| mDNSlocal mStatus SetupNiceName( mDNS * const inMDNS ); |
| mDNSlocal mStatus SetupHostName( mDNS * const inMDNS ); |
| mDNSlocal mStatus SetupName( mDNS * const inMDNS ); |
| mDNSlocal mStatus SetupInterface( mDNS * const inMDNS, const struct ifaddrs *inIFA, mDNSInterfaceData **outIFD ); |
| mDNSlocal mStatus TearDownInterface( mDNS * const inMDNS, mDNSInterfaceData *inIFD ); |
| mDNSlocal void CALLBACK FreeInterface( mDNSInterfaceData *inIFD ); |
| mDNSlocal mStatus SetupSocket( mDNS * const inMDNS, const struct sockaddr *inAddr, mDNSIPPort port, SocketRef *outSocketRef ); |
| mDNSlocal mStatus SockAddrToMDNSAddr( const struct sockaddr * const inSA, mDNSAddr *outIP, mDNSIPPort *outPort ); |
| mDNSlocal OSStatus GetWindowsVersionString( char *inBuffer, size_t inBufferSize ); |
| mDNSlocal int getifaddrs( struct ifaddrs **outAddrs ); |
| mDNSlocal void freeifaddrs( struct ifaddrs *inAddrs ); |
| |
| |
| |
| // Platform Accessors |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| typedef struct mDNSPlatformInterfaceInfo mDNSPlatformInterfaceInfo; |
| struct mDNSPlatformInterfaceInfo |
| { |
| const char * name; |
| mDNSAddr ip; |
| }; |
| |
| |
| mDNSexport mStatus mDNSPlatformInterfaceNameToID( mDNS * const inMDNS, const char *inName, mDNSInterfaceID *outID ); |
| mDNSexport mStatus mDNSPlatformInterfaceIDToInfo( mDNS * const inMDNS, mDNSInterfaceID inID, mDNSPlatformInterfaceInfo *outInfo ); |
| |
| // Utilities |
| |
| #if( MDNS_WINDOWS_USE_IPV6_IF_ADDRS ) |
| mDNSlocal int getifaddrs_ipv6( struct ifaddrs **outAddrs ); |
| #endif |
| |
| mDNSlocal int getifaddrs_ipv4( struct ifaddrs **outAddrs ); |
| |
| |
| mDNSlocal DWORD GetPrimaryInterface(); |
| mDNSlocal mStatus AddressToIndexAndMask( struct sockaddr * address, uint32_t * index, struct sockaddr * mask ); |
| mDNSlocal mDNSBool CanReceiveUnicast( void ); |
| mDNSlocal mDNSBool IsPointToPoint( IP_ADAPTER_UNICAST_ADDRESS * addr ); |
| |
| mDNSlocal mStatus StringToAddress( mDNSAddr * ip, LPSTR string ); |
| mDNSlocal mStatus RegQueryString( HKEY key, LPCSTR param, LPSTR * string, DWORD * stringLen, DWORD * enabled ); |
| mDNSlocal struct ifaddrs* myGetIfAddrs(int refresh); |
| mDNSlocal OSStatus TCHARtoUTF8( const TCHAR *inString, char *inBuffer, size_t inBufferSize ); |
| mDNSlocal OSStatus WindowsLatin1toUTF8( const char *inString, char *inBuffer, size_t inBufferSize ); |
| mDNSlocal void TCPDidConnect( mDNS * const inMDNS, HANDLE event, void * context ); |
| mDNSlocal void TCPCanRead( TCPSocket * sock ); |
| mDNSlocal mStatus TCPBeginRecv( TCPSocket * sock ); |
| mDNSlocal void CALLBACK TCPEndRecv( DWORD error, DWORD bytesTransferred, LPWSAOVERLAPPED overlapped, DWORD flags ); |
| mDNSlocal void TCPCloseSocket( TCPSocket * socket ); |
| mDNSlocal void CALLBACK TCPFreeSocket( TCPSocket *sock ); |
| mDNSlocal OSStatus UDPBeginRecv( UDPSocket * socket ); |
| mDNSlocal void CALLBACK UDPEndRecv( DWORD err, DWORD bytesTransferred, LPWSAOVERLAPPED overlapped, DWORD flags ); |
| mDNSlocal void UDPCloseSocket( UDPSocket * sock ); |
| mDNSlocal void CALLBACK UDPFreeSocket( UDPSocket * sock ); |
| mDNSlocal mStatus SetupAddr(mDNSAddr *ip, const struct sockaddr *const sa); |
| mDNSlocal void GetDDNSFQDN( domainname *const fqdn ); |
| #ifdef UNICODE |
| mDNSlocal void GetDDNSDomains( DNameListElem ** domains, LPCWSTR lpSubKey ); |
| #else |
| mDNSlocal void GetDDNSDomains( DNameListElem ** domains, LPCSTR lpSubKey ); |
| #endif |
| mDNSlocal void SetDomainSecrets( mDNS * const inMDNS ); |
| mDNSlocal void SetDomainSecret( mDNS * const m, const domainname * inDomain ); |
| mDNSlocal VOID CALLBACK CheckFileSharesProc( LPVOID arg, DWORD dwTimerLowValue, DWORD dwTimerHighValue ); |
| mDNSlocal void CheckFileShares( mDNS * const inMDNS ); |
| mDNSlocal void SMBCallback(mDNS *const m, ServiceRecordSet *const srs, mStatus result); |
| mDNSlocal mDNSu8 IsWOMPEnabledForAdapter( const char * adapterName ); |
| mDNSlocal void DispatchUDPEvent( mDNS * const m, UDPSocket * sock ); |
| mDNSlocal void DispatchTCPEvent( mDNS * const m, TCPSocket * sock ); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #if 0 |
| #pragma mark == Globals == |
| #endif |
| |
| //=========================================================================================================================== |
| // Globals |
| //=========================================================================================================================== |
| |
| mDNSlocal mDNS_PlatformSupport gMDNSPlatformSupport; |
| mDNSs32 mDNSPlatformOneSecond = 0; |
| mDNSlocal UDPSocket * gUDPSockets = NULL; |
| mDNSlocal int gUDPNumSockets = 0; |
| mDNSlocal GenLinkedList gUDPDispatchableSockets; |
| mDNSlocal GenLinkedList gTCPDispatchableSockets; |
| |
| #if( MDNS_WINDOWS_USE_IPV6_IF_ADDRS ) |
| |
| typedef DWORD |
| ( WINAPI * GetAdaptersAddressesFunctionPtr )( |
| ULONG inFamily, |
| DWORD inFlags, |
| PVOID inReserved, |
| PIP_ADAPTER_ADDRESSES inAdapter, |
| PULONG outBufferSize ); |
| |
| mDNSlocal HMODULE gIPHelperLibraryInstance = NULL; |
| mDNSlocal GetAdaptersAddressesFunctionPtr gGetAdaptersAddressesFunctionPtr = NULL; |
| |
| #endif |
| |
| |
| #ifndef HCRYPTPROV |
| typedef ULONG_PTR HCRYPTPROV; // WinCrypt.h, line 249 |
| #endif |
| |
| |
| #ifndef CRYPT_MACHINE_KEYSET |
| # define CRYPT_MACHINE_KEYSET 0x00000020 |
| #endif |
| |
| #ifndef CRYPT_NEWKEYSET |
| # define CRYPT_NEWKEYSET 0x00000008 |
| #endif |
| |
| #ifndef PROV_RSA_FULL |
| # define PROV_RSA_FULL 1 |
| #endif |
| |
| typedef BOOL (__stdcall *fnCryptGenRandom)( HCRYPTPROV, DWORD, BYTE* ); |
| typedef BOOL (__stdcall *fnCryptAcquireContext)( HCRYPTPROV*, LPCTSTR, LPCTSTR, DWORD, DWORD); |
| typedef BOOL (__stdcall *fnCryptReleaseContext)(HCRYPTPROV, DWORD); |
| |
| static fnCryptAcquireContext g_lpCryptAcquireContext = NULL; |
| static fnCryptReleaseContext g_lpCryptReleaseContext = NULL; |
| static fnCryptGenRandom g_lpCryptGenRandom = NULL; |
| static HINSTANCE g_hAAPI32 = NULL; |
| static HCRYPTPROV g_hProvider = ( ULONG_PTR ) NULL; |
| |
| |
| typedef DNSServiceErrorType ( DNSSD_API *DNSServiceRegisterFunc ) |
| ( |
| DNSServiceRef *sdRef, |
| DNSServiceFlags flags, |
| uint32_t interfaceIndex, |
| const char *name, /* may be NULL */ |
| const char *regtype, |
| const char *domain, /* may be NULL */ |
| const char *host, /* may be NULL */ |
| uint16_t port, |
| uint16_t txtLen, |
| const void *txtRecord, /* may be NULL */ |
| DNSServiceRegisterReply callBack, /* may be NULL */ |
| void *context /* may be NULL */ |
| ); |
| |
| |
| typedef void ( DNSSD_API *DNSServiceRefDeallocateFunc )( DNSServiceRef sdRef ); |
| |
| mDNSlocal HMODULE gDNSSDLibrary = NULL; |
| mDNSlocal DNSServiceRegisterFunc gDNSServiceRegister = NULL; |
| mDNSlocal DNSServiceRefDeallocateFunc gDNSServiceRefDeallocate = NULL; |
| mDNSlocal HANDLE gSMBThread = NULL; |
| mDNSlocal HANDLE gSMBThreadRegisterEvent = NULL; |
| mDNSlocal HANDLE gSMBThreadDeregisterEvent = NULL; |
| mDNSlocal HANDLE gSMBThreadStopEvent = NULL; |
| mDNSlocal HANDLE gSMBThreadQuitEvent = NULL; |
| |
| #define kSMBStopEvent ( WAIT_OBJECT_0 + 0 ) |
| #define kSMBRegisterEvent ( WAIT_OBJECT_0 + 1 ) |
| #define kSMBDeregisterEvent ( WAIT_OBJECT_0 + 2 ) |
| |
| |
| #if 0 |
| #pragma mark - |
| #pragma mark == Platform Support == |
| #endif |
| |
| //=========================================================================================================================== |
| // mDNSPlatformInit |
| //=========================================================================================================================== |
| |
| mDNSexport mStatus mDNSPlatformInit( mDNS * const inMDNS ) |
| { |
| mStatus err; |
| WSADATA wsaData; |
| int supported; |
| struct sockaddr_in sa4; |
| struct sockaddr_in6 sa6; |
| int sa4len; |
| int sa6len; |
| DWORD size; |
| DWORD val; |
| |
| dlog( kDebugLevelTrace, DEBUG_NAME "platform init\n" ); |
| |
| // Initialize variables. If the PlatformSupport pointer is not null then just assume that a non-Apple client is |
| // calling mDNS_Init and wants to provide its own storage for the platform-specific data so do not overwrite it. |
| |
| mDNSPlatformMemZero( &gMDNSPlatformSupport, sizeof( gMDNSPlatformSupport ) ); |
| if( !inMDNS->p ) inMDNS->p = &gMDNSPlatformSupport; |
| inMDNS->p->mainThread = OpenThread( THREAD_ALL_ACCESS, FALSE, GetCurrentThreadId() ); |
| require_action( inMDNS->p->mainThread, exit, err = mStatus_UnknownErr ); |
| inMDNS->p->checkFileSharesTimer = CreateWaitableTimer( NULL, FALSE, NULL ); |
| require_action( inMDNS->p->checkFileSharesTimer, exit, err = mStatus_UnknownErr ); |
| inMDNS->p->checkFileSharesTimeout = 10; // Retry time for CheckFileShares() in seconds |
| mDNSPlatformOneSecond = 1000; // Use milliseconds as the quantum of time |
| InitLinkedList( &gTCPDispatchableSockets, offsetof( TCPSocket, nextDispatchable ) ); |
| InitLinkedList( &gUDPDispatchableSockets, offsetof( UDPSocket, nextDispatchable ) ); |
| |
| // Startup WinSock 2.2 or later. |
| |
| err = WSAStartup( MAKEWORD( kWinSockMajorMin, kWinSockMinorMin ), &wsaData ); |
| require_noerr( err, exit ); |
| |
| supported = ( ( LOBYTE( wsaData.wVersion ) == kWinSockMajorMin ) && ( HIBYTE( wsaData.wVersion ) == kWinSockMinorMin ) ); |
| require_action( supported, exit, err = mStatus_UnsupportedErr ); |
| |
| inMDNS->CanReceiveUnicastOn5353 = CanReceiveUnicast(); |
| |
| // Setup the HINFO HW strings. |
| //<rdar://problem/7245119> device-info should have model=Windows |
| |
| strcpy_s( ( char* ) &inMDNS->HIHardware.c[ 1 ], sizeof( inMDNS->HIHardware.c ) - 2, "Windows" ); |
| inMDNS->HIHardware.c[ 0 ] = ( mDNSu8 ) mDNSPlatformStrLen( &inMDNS->HIHardware.c[ 1 ] ); |
| dlog( kDebugLevelInfo, DEBUG_NAME "HIHardware: %#s\n", inMDNS->HIHardware.c ); |
| |
| // Setup the HINFO SW strings. |
| #if ( MDNS_SET_HINFO_STRINGS ) |
| mDNS_snprintf( (char *) &inMDNS->HISoftware.c[ 1 ], sizeof( inMDNS->HISoftware.c ) - 2, |
| "mDNSResponder (%s %s)", __DATE__, __TIME__ ); |
| inMDNS->HISoftware.c[ 0 ] = (mDNSu8) mDNSPlatformStrLen( &inMDNS->HISoftware.c[ 1 ] ); |
| dlog( kDebugLevelInfo, DEBUG_NAME "HISoftware: %#s\n", inMDNS->HISoftware.c ); |
| #endif |
| |
| // Set the thread global overlapped flag |
| |
| val = 0; |
| err = setsockopt( INVALID_SOCKET, SOL_SOCKET, SO_OPENTYPE, ( char* ) &val, sizeof( val ) ); |
| err = translate_errno( err != SOCKET_ERROR, WSAGetLastError(), kUnknownErr ); |
| require_noerr( err, exit ); |
| |
| // Set up the IPv4 unicast socket |
| |
| inMDNS->p->unicastSock4.fd = INVALID_SOCKET; |
| inMDNS->p->unicastSock4.recvMsgPtr = NULL; |
| inMDNS->p->unicastSock4.ifd = NULL; |
| inMDNS->p->unicastSock4.overlapped.pending = FALSE; |
| inMDNS->p->unicastSock4.next = NULL; |
| inMDNS->p->unicastSock4.m = inMDNS; |
| |
| #if ( MDNS_WINDOWS_ENABLE_IPV4 ) |
| |
| sa4.sin_family = AF_INET; |
| sa4.sin_addr.s_addr = INADDR_ANY; |
| err = SetupSocket( inMDNS, (const struct sockaddr*) &sa4, zeroIPPort, &inMDNS->p->unicastSock4.fd ); |
| check_noerr( err ); |
| sa4len = sizeof( sa4 ); |
| err = getsockname( inMDNS->p->unicastSock4.fd, (struct sockaddr*) &sa4, &sa4len ); |
| require_noerr( err, exit ); |
| inMDNS->p->unicastSock4.port.NotAnInteger = sa4.sin_port; |
| inMDNS->UnicastPort4 = inMDNS->p->unicastSock4.port; |
| 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 ); |
| |
| if ( err ) |
| { |
| inMDNS->p->unicastSock4.recvMsgPtr = NULL; |
| } |
| |
| err = UDPBeginRecv( &inMDNS->p->unicastSock4 ); |
| require_noerr( err, exit ); |
| |
| #endif |
| |
| // Set up the IPv6 unicast socket |
| |
| inMDNS->p->unicastSock6.fd = INVALID_SOCKET; |
| inMDNS->p->unicastSock6.recvMsgPtr = NULL; |
| inMDNS->p->unicastSock6.ifd = NULL; |
| inMDNS->p->unicastSock6.overlapped.pending = FALSE; |
| inMDNS->p->unicastSock6.next = NULL; |
| inMDNS->p->unicastSock6.m = inMDNS; |
| |
| #if ( MDNS_WINDOWS_ENABLE_IPV6 ) |
| |
| sa6.sin6_family = AF_INET6; |
| sa6.sin6_addr = in6addr_any; |
| sa6.sin6_scope_id = 0; |
| |
| // This call will fail if the machine hasn't installed IPv6. In that case, |
| // the error will be WSAEAFNOSUPPORT. |
| |
| err = SetupSocket( inMDNS, (const struct sockaddr*) &sa6, zeroIPPort, &inMDNS->p->unicastSock6.fd ); |
| require_action( !err || ( err == WSAEAFNOSUPPORT ), exit, err = (mStatus) WSAGetLastError() ); |
| err = kNoErr; |
| |
| // If we weren't able to create the socket (because IPv6 hasn't been installed) don't do this |
| |
| if ( inMDNS->p->unicastSock6.fd != INVALID_SOCKET ) |
| { |
| sa6len = sizeof( sa6 ); |
| err = getsockname( inMDNS->p->unicastSock6.fd, (struct sockaddr*) &sa6, &sa6len ); |
| require_noerr( err, exit ); |
| inMDNS->p->unicastSock6.port.NotAnInteger = sa6.sin6_port; |
| inMDNS->UnicastPort6 = inMDNS->p->unicastSock6.port; |
| |
| 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 ); |
| |
| if ( err != 0 ) |
| { |
| inMDNS->p->unicastSock6.recvMsgPtr = NULL; |
| } |
| |
| err = UDPBeginRecv( &inMDNS->p->unicastSock6 ); |
| require_noerr( err, exit ); |
| } |
| |
| #endif |
| |
| // Notify core of domain secret keys |
| |
| SetDomainSecrets( inMDNS ); |
| |
| // Success! |
| |
| mDNSCoreInitComplete( inMDNS, err ); |
| |
| |
| exit: |
| |
| if ( err ) |
| { |
| mDNSPlatformClose( inMDNS ); |
| } |
| |
| dlog( kDebugLevelTrace, DEBUG_NAME "platform init done (err=%d %m)\n", err, err ); |
| return( err ); |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformClose |
| //=========================================================================================================================== |
| |
| mDNSexport void mDNSPlatformClose( mDNS * const inMDNS ) |
| { |
| mStatus err; |
| |
| dlog( kDebugLevelTrace, DEBUG_NAME "platform close\n" ); |
| check( inMDNS ); |
| |
| if ( gSMBThread != NULL ) |
| { |
| dlog( kDebugLevelTrace, DEBUG_NAME "tearing down smb registration thread\n" ); |
| SetEvent( gSMBThreadStopEvent ); |
| |
| if ( WaitForSingleObject( gSMBThreadQuitEvent, 5 * 1000 ) == WAIT_OBJECT_0 ) |
| { |
| if ( gSMBThreadQuitEvent ) |
| { |
| CloseHandle( gSMBThreadQuitEvent ); |
| gSMBThreadQuitEvent = NULL; |
| } |
| |
| if ( gSMBThreadStopEvent ) |
| { |
| CloseHandle( gSMBThreadStopEvent ); |
| gSMBThreadStopEvent = NULL; |
| } |
| |
| if ( gSMBThreadDeregisterEvent ) |
| { |
| CloseHandle( gSMBThreadDeregisterEvent ); |
| gSMBThreadDeregisterEvent = NULL; |
| } |
| |
| if ( gSMBThreadRegisterEvent ) |
| { |
| CloseHandle( gSMBThreadRegisterEvent ); |
| gSMBThreadRegisterEvent = NULL; |
| } |
| |
| if ( gDNSSDLibrary ) |
| { |
| FreeLibrary( gDNSSDLibrary ); |
| gDNSSDLibrary = NULL; |
| } |
| } |
| else |
| { |
| LogMsg( "Unable to stop SMBThread" ); |
| } |
| |
| inMDNS->p->smbFileSharing = mDNSfalse; |
| inMDNS->p->smbPrintSharing = mDNSfalse; |
| } |
| |
| // Tear everything down in reverse order to how it was set up. |
| |
| err = TearDownInterfaceList( inMDNS ); |
| check_noerr( err ); |
| check( !inMDNS->p->inactiveInterfaceList ); |
| |
| #if ( MDNS_WINDOWS_ENABLE_IPV4 ) |
| |
| UDPCloseSocket( &inMDNS->p->unicastSock4 ); |
| |
| #endif |
| |
| #if ( MDNS_WINDOWS_ENABLE_IPV6 ) |
| |
| UDPCloseSocket( &inMDNS->p->unicastSock6 ); |
| |
| #endif |
| |
| // Free the DLL needed for IPv6 support. |
| |
| #if( MDNS_WINDOWS_USE_IPV6_IF_ADDRS ) |
| if( gIPHelperLibraryInstance ) |
| { |
| gGetAdaptersAddressesFunctionPtr = NULL; |
| |
| FreeLibrary( gIPHelperLibraryInstance ); |
| gIPHelperLibraryInstance = NULL; |
| } |
| #endif |
| |
| if ( g_hAAPI32 ) |
| { |
| // Release any resources |
| |
| if ( g_hProvider && g_lpCryptReleaseContext ) |
| { |
| ( g_lpCryptReleaseContext )( g_hProvider, 0 ); |
| } |
| |
| // Free the AdvApi32.dll |
| |
| FreeLibrary( g_hAAPI32 ); |
| |
| // And reset all the data |
| |
| g_lpCryptAcquireContext = NULL; |
| g_lpCryptReleaseContext = NULL; |
| g_lpCryptGenRandom = NULL; |
| g_hProvider = ( ULONG_PTR ) NULL; |
| g_hAAPI32 = NULL; |
| } |
| |
| // Clear out the APC queue |
| |
| while ( SleepEx( 0, TRUE ) == WAIT_IO_COMPLETION ) |
| { |
| DispatchSocketEvents( inMDNS ); |
| } |
| |
| WSACleanup(); |
| |
| dlog( kDebugLevelTrace, DEBUG_NAME "platform close done\n" ); |
| } |
| |
| |
| //=========================================================================================================================== |
| // mDNSPlatformLock |
| //=========================================================================================================================== |
| |
| mDNSexport void mDNSPlatformLock( const mDNS * const inMDNS ) |
| { |
| ( void ) inMDNS; |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformUnlock |
| //=========================================================================================================================== |
| |
| mDNSexport void mDNSPlatformUnlock( const mDNS * const inMDNS ) |
| { |
| ( void ) inMDNS; |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformStrCopy |
| //=========================================================================================================================== |
| |
| mDNSexport void mDNSPlatformStrCopy( void *inDst, const void *inSrc ) |
| { |
| check( inSrc ); |
| check( inDst ); |
| |
| strcpy( (char *) inDst, (const char*) inSrc ); |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformStrLCopy |
| //=========================================================================================================================== |
| |
| mDNSexport mDNSu32 mDNSPlatformStrLCopy(void *inDst, const void *inSrc, mDNSu32 inSize) |
| { |
| const char * src = (const char *) inSrc; |
| |
| if( inSize > 0 ) |
| { |
| size_t n; |
| char * dst = (char *) inDst; |
| |
| for( n = inSize - 1; n > 0; --n ) |
| { |
| if( ( *dst++ = *src++ ) == '\0' ) |
| { |
| // Null terminator encountered, so exit. |
| goto exit; |
| } |
| } |
| *dst = '\0'; |
| } |
| |
| while( *src++ != '\0' ) |
| { |
| // Stop at null terminator. |
| } |
| |
| exit: |
| return( (mDNSu32)( src - (const char *) inSrc ) - 1 ); |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformStrLen |
| //=========================================================================================================================== |
| |
| mDNSexport mDNSu32 mDNSPlatformStrLen( const void *inSrc ) |
| { |
| check( inSrc ); |
| |
| return( (mDNSu32) strlen( (const char *) inSrc ) ); |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformMemCopy |
| //=========================================================================================================================== |
| |
| mDNSexport void mDNSPlatformMemCopy( void *inDst, const void *inSrc, mDNSu32 inSize ) |
| { |
| check( inSrc ); |
| check( inDst ); |
| |
| memcpy( inDst, inSrc, inSize ); |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformMemSame |
| //=========================================================================================================================== |
| |
| mDNSexport mDNSBool mDNSPlatformMemSame( const void *inDst, const void *inSrc, mDNSu32 inSize ) |
| { |
| check( inSrc ); |
| check( inDst ); |
| |
| return( (mDNSBool)( memcmp( inSrc, inDst, inSize ) == 0 ) ); |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformMemZero |
| //=========================================================================================================================== |
| |
| mDNSexport void mDNSPlatformMemZero( void *inDst, mDNSu32 inSize ) |
| { |
| check( inDst ); |
| |
| memset( inDst, 0, inSize ); |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformMemAllocate |
| //=========================================================================================================================== |
| |
| mDNSexport void * mDNSPlatformMemAllocate( mDNSu32 inSize ) |
| { |
| void * mem; |
| |
| check( inSize > 0 ); |
| |
| mem = malloc( inSize ); |
| check( mem ); |
| |
| return( mem ); |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformMemFree |
| //=========================================================================================================================== |
| |
| mDNSexport void mDNSPlatformMemFree( void *inMem ) |
| { |
| check( inMem ); |
| |
| free( inMem ); |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformRandomNumber |
| //=========================================================================================================================== |
| |
| mDNSexport mDNSu32 mDNSPlatformRandomNumber(void) |
| { |
| mDNSu32 randomNumber = 0; |
| BOOL bResult; |
| OSStatus err = 0; |
| |
| if ( !g_hAAPI32 ) |
| { |
| g_hAAPI32 = LoadLibrary( TEXT("AdvAPI32.dll") ); |
| err = translate_errno( g_hAAPI32 != NULL, GetLastError(), mStatus_UnknownErr ); |
| require_noerr( err, exit ); |
| } |
| |
| // Function Pointer: CryptAcquireContext |
| |
| if ( !g_lpCryptAcquireContext ) |
| { |
| g_lpCryptAcquireContext = ( fnCryptAcquireContext ) |
| #ifdef UNICODE |
| ( GetProcAddress( g_hAAPI32, "CryptAcquireContextW" ) ); |
| #else |
| ( GetProcAddress( g_hAAPI32, "CryptAcquireContextA" ) ); |
| #endif |
| err = translate_errno( g_lpCryptAcquireContext != NULL, GetLastError(), mStatus_UnknownErr ); |
| require_noerr( err, exit ); |
| } |
| |
| // Function Pointer: CryptReleaseContext |
| |
| if ( !g_lpCryptReleaseContext ) |
| { |
| g_lpCryptReleaseContext = ( fnCryptReleaseContext ) |
| ( GetProcAddress( g_hAAPI32, "CryptReleaseContext" ) ); |
| err = translate_errno( g_lpCryptReleaseContext != NULL, GetLastError(), mStatus_UnknownErr ); |
| require_noerr( err, exit ); |
| } |
| |
| // Function Pointer: CryptGenRandom |
| |
| if ( !g_lpCryptGenRandom ) |
| { |
| g_lpCryptGenRandom = ( fnCryptGenRandom ) |
| ( GetProcAddress( g_hAAPI32, "CryptGenRandom" ) ); |
| err = translate_errno( g_lpCryptGenRandom != NULL, GetLastError(), mStatus_UnknownErr ); |
| require_noerr( err, exit ); |
| } |
| |
| // Setup |
| |
| if ( !g_hProvider ) |
| { |
| bResult = (*g_lpCryptAcquireContext)( &g_hProvider, NULL, NULL, PROV_RSA_FULL, CRYPT_MACHINE_KEYSET ); |
| |
| if ( !bResult ) |
| { |
| bResult = ( *g_lpCryptAcquireContext)( &g_hProvider, NULL, NULL, PROV_RSA_FULL, CRYPT_MACHINE_KEYSET | CRYPT_NEWKEYSET ); |
| err = translate_errno( bResult, GetLastError(), mStatus_UnknownErr ); |
| require_noerr( err, exit ); |
| } |
| } |
| |
| bResult = (*g_lpCryptGenRandom)( g_hProvider, sizeof( randomNumber ), ( BYTE* ) &randomNumber ); |
| err = translate_errno( bResult, GetLastError(), mStatus_UnknownErr ); |
| require_noerr( err, exit ); |
| |
| exit: |
| |
| if ( err ) |
| { |
| randomNumber = rand(); |
| } |
| |
| return randomNumber; |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformTimeInit |
| //=========================================================================================================================== |
| |
| mDNSexport mStatus mDNSPlatformTimeInit( void ) |
| { |
| // No special setup is required on Windows -- we just use GetTickCount(). |
| return( mStatus_NoError ); |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformRawTime |
| //=========================================================================================================================== |
| |
| mDNSexport mDNSs32 mDNSPlatformRawTime( void ) |
| { |
| return( (mDNSs32) GetTickCount() ); |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformUTC |
| //=========================================================================================================================== |
| |
| mDNSexport mDNSs32 mDNSPlatformUTC( void ) |
| { |
| return ( mDNSs32 ) time( NULL ); |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformInterfaceNameToID |
| //=========================================================================================================================== |
| |
| mDNSexport mStatus mDNSPlatformInterfaceNameToID( mDNS * const inMDNS, const char *inName, mDNSInterfaceID *outID ) |
| { |
| mStatus err; |
| mDNSInterfaceData * ifd; |
| |
| check( inMDNS ); |
| check( inMDNS->p ); |
| check( inName ); |
| |
| // Search for an interface with the specified name, |
| |
| for( ifd = inMDNS->p->interfaceList; ifd; ifd = ifd->next ) |
| { |
| if( strcmp( ifd->name, inName ) == 0 ) |
| { |
| break; |
| } |
| } |
| require_action_quiet( ifd, exit, err = mStatus_NoSuchNameErr ); |
| |
| // Success! |
| |
| if( outID ) |
| { |
| *outID = (mDNSInterfaceID) ifd; |
| } |
| err = mStatus_NoError; |
| |
| exit: |
| return( err ); |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformInterfaceIDToInfo |
| //=========================================================================================================================== |
| |
| mDNSexport mStatus mDNSPlatformInterfaceIDToInfo( mDNS * const inMDNS, mDNSInterfaceID inID, mDNSPlatformInterfaceInfo *outInfo ) |
| { |
| mStatus err; |
| mDNSInterfaceData * ifd; |
| |
| check( inMDNS ); |
| check( inID ); |
| check( outInfo ); |
| |
| // Search for an interface with the specified ID, |
| |
| for( ifd = inMDNS->p->interfaceList; ifd; ifd = ifd->next ) |
| { |
| if( ifd == (mDNSInterfaceData *) inID ) |
| { |
| break; |
| } |
| } |
| require_action_quiet( ifd, exit, err = mStatus_NoSuchNameErr ); |
| |
| // Success! |
| |
| outInfo->name = ifd->name; |
| outInfo->ip = ifd->interfaceInfo.ip; |
| err = mStatus_NoError; |
| |
| exit: |
| return( err ); |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformInterfaceIDfromInterfaceIndex |
| //=========================================================================================================================== |
| |
| mDNSexport mDNSInterfaceID mDNSPlatformInterfaceIDfromInterfaceIndex( mDNS * const inMDNS, mDNSu32 inIndex ) |
| { |
| mDNSInterfaceID id; |
| |
| id = mDNSNULL; |
| if( inIndex == kDNSServiceInterfaceIndexLocalOnly ) |
| { |
| id = mDNSInterface_LocalOnly; |
| } |
| /* uncomment if Windows ever supports P2P |
| else if( inIndex == kDNSServiceInterfaceIndexP2P ) |
| { |
| id = mDNSInterface_P2P; |
| } |
| */ |
| else if( inIndex != 0 ) |
| { |
| mDNSInterfaceData * ifd; |
| |
| for( ifd = inMDNS->p->interfaceList; ifd; ifd = ifd->next ) |
| { |
| if( ( ifd->scopeID == inIndex ) && ifd->interfaceInfo.InterfaceActive ) |
| { |
| id = ifd->interfaceInfo.InterfaceID; |
| break; |
| } |
| } |
| check( ifd ); |
| } |
| return( id ); |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformInterfaceIndexfromInterfaceID |
| //=========================================================================================================================== |
| |
| mDNSexport mDNSu32 mDNSPlatformInterfaceIndexfromInterfaceID( mDNS * const inMDNS, mDNSInterfaceID inID, mDNSBool suppressNetworkChange ) |
| { |
| mDNSu32 index; |
| (void) suppressNetworkChange; // Unused |
| |
| index = 0; |
| if( inID == mDNSInterface_LocalOnly ) |
| { |
| index = (mDNSu32) kDNSServiceInterfaceIndexLocalOnly; |
| } |
| /* uncomment if Windows ever supports P2P |
| else if( inID == mDNSInterface_P2P ) |
| { |
| index = (mDNSu32) kDNSServiceInterfaceIndexP2P; |
| } |
| */ |
| else if( inID ) |
| { |
| mDNSInterfaceData * ifd; |
| |
| // Search active interfaces. |
| for( ifd = inMDNS->p->interfaceList; ifd; ifd = ifd->next ) |
| { |
| if( (mDNSInterfaceID) ifd == inID ) |
| { |
| index = ifd->scopeID; |
| break; |
| } |
| } |
| |
| // Search inactive interfaces too so remove events for inactive interfaces report the old interface index. |
| |
| if( !ifd ) |
| { |
| for( ifd = inMDNS->p->inactiveInterfaceList; ifd; ifd = ifd->next ) |
| { |
| if( (mDNSInterfaceID) ifd == inID ) |
| { |
| index = ifd->scopeID; |
| break; |
| } |
| } |
| } |
| check( ifd ); |
| } |
| return( index ); |
| } |
| |
| |
| //=========================================================================================================================== |
| // mDNSPlatformTCPSocket |
| //=========================================================================================================================== |
| |
| TCPSocket * |
| mDNSPlatformTCPSocket |
| ( |
| mDNS * const m, |
| TCPSocketFlags flags, |
| mDNSIPPort * port |
| ) |
| { |
| TCPSocket * sock = NULL; |
| u_long on = 1; // "on" for setsockopt |
| struct sockaddr_in saddr; |
| int len; |
| mStatus err = mStatus_NoError; |
| |
| DEBUG_UNUSED( m ); |
| |
| require_action( flags == 0, exit, err = mStatus_UnsupportedErr ); |
| |
| // Setup connection data object |
| |
| sock = (TCPSocket *) malloc( sizeof( TCPSocket ) ); |
| require_action( sock, exit, err = mStatus_NoMemoryErr ); |
| mDNSPlatformMemZero( sock, sizeof( TCPSocket ) ); |
| sock->fd = INVALID_SOCKET; |
| sock->flags = flags; |
| sock->m = m; |
| |
| mDNSPlatformMemZero(&saddr, sizeof(saddr)); |
| saddr.sin_family = AF_INET; |
| saddr.sin_addr.s_addr = htonl( INADDR_ANY ); |
| saddr.sin_port = port->NotAnInteger; |
| |
| // Create the socket |
| |
| sock->fd = socket(AF_INET, SOCK_STREAM, 0); |
| err = translate_errno( sock->fd != INVALID_SOCKET, WSAGetLastError(), mStatus_UnknownErr ); |
| require_noerr( err, exit ); |
| |
| // bind |
| |
| err = bind( sock->fd, ( struct sockaddr* ) &saddr, sizeof( saddr ) ); |
| err = translate_errno( err == 0, WSAGetLastError(), mStatus_UnknownErr ); |
| require_noerr( err, exit ); |
| |
| // Set it to be non-blocking |
| |
| err = ioctlsocket( sock->fd, FIONBIO, &on ); |
| err = translate_errno( err == 0, WSAGetLastError(), mStatus_UnknownErr ); |
| require_noerr( err, exit ); |
| |
| // Get port number |
| |
| mDNSPlatformMemZero( &saddr, sizeof( saddr ) ); |
| len = sizeof( saddr ); |
| |
| err = getsockname( sock->fd, ( struct sockaddr* ) &saddr, &len ); |
| err = translate_errno( err == 0, WSAGetLastError(), mStatus_UnknownErr ); |
| require_noerr( err, exit ); |
| |
| port->NotAnInteger = saddr.sin_port; |
| |
| exit: |
| |
| if ( err && sock ) |
| { |
| TCPFreeSocket( sock ); |
| sock = mDNSNULL; |
| } |
| |
| return sock; |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformTCPConnect |
| //=========================================================================================================================== |
| |
| mStatus |
| mDNSPlatformTCPConnect |
| ( |
| TCPSocket * sock, |
| const mDNSAddr * inDstIP, |
| mDNSOpaque16 inDstPort, |
| domainname * hostname, |
| mDNSInterfaceID inInterfaceID, |
| TCPConnectionCallback inCallback, |
| void * inContext |
| ) |
| { |
| struct sockaddr_in saddr; |
| mStatus err = mStatus_NoError; |
| |
| DEBUG_UNUSED( inInterfaceID ); |
| ( void ) hostname; |
| |
| if ( inDstIP->type != mDNSAddrType_IPv4 ) |
| { |
| LogMsg("ERROR: mDNSPlatformTCPConnect - attempt to connect to an IPv6 address: operation not supported"); |
| return mStatus_UnknownErr; |
| } |
| |
| // Setup connection data object |
| |
| sock->readEventHandler = TCPCanRead; |
| sock->userCallback = inCallback; |
| sock->userContext = inContext; |
| |
| mDNSPlatformMemZero(&saddr, sizeof(saddr)); |
| saddr.sin_family = AF_INET; |
| saddr.sin_port = inDstPort.NotAnInteger; |
| memcpy(&saddr.sin_addr, &inDstIP->ip.v4.NotAnInteger, sizeof(saddr.sin_addr)); |
| |
| // Try and do connect |
| |
| err = connect( sock->fd, ( struct sockaddr* ) &saddr, sizeof( saddr ) ); |
| require_action( !err || ( WSAGetLastError() == WSAEWOULDBLOCK ), exit, err = mStatus_ConnFailed ); |
| sock->connected = !err ? TRUE : FALSE; |
| |
| if ( sock->connected ) |
| { |
| err = TCPAddSocket( sock->m, sock ); |
| require_noerr( err, exit ); |
| } |
| else |
| { |
| require_action( sock->m->p->registerWaitableEventFunc != NULL, exit, err = mStatus_ConnFailed ); |
| |
| sock->connectEvent = CreateEvent( NULL, FALSE, FALSE, NULL ); |
| err = translate_errno( sock->connectEvent, GetLastError(), mStatus_UnknownErr ); |
| require_noerr( err, exit ); |
| |
| err = WSAEventSelect( sock->fd, sock->connectEvent, FD_CONNECT ); |
| require_noerr( err, exit ); |
| |
| err = sock->m->p->registerWaitableEventFunc( sock->m, sock->connectEvent, sock, TCPDidConnect ); |
| require_noerr( err, exit ); |
| } |
| |
| exit: |
| |
| if ( !err ) |
| { |
| err = sock->connected ? mStatus_ConnEstablished : mStatus_ConnPending; |
| } |
| |
| return err; |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformTCPAccept |
| //=========================================================================================================================== |
| |
| mDNSexport |
| mDNSexport TCPSocket *mDNSPlatformTCPAccept( TCPSocketFlags flags, int fd ) |
| { |
| TCPSocket * sock = NULL; |
| mStatus err = mStatus_NoError; |
| |
| require_action( !flags, exit, err = mStatus_UnsupportedErr ); |
| |
| sock = malloc( sizeof( TCPSocket ) ); |
| require_action( sock, exit, err = mStatus_NoMemoryErr ); |
| |
| mDNSPlatformMemZero( sock, sizeof( *sock ) ); |
| |
| sock->fd = fd; |
| sock->flags = flags; |
| |
| exit: |
| |
| if ( err && sock ) |
| { |
| free( sock ); |
| sock = NULL; |
| } |
| |
| return sock; |
| } |
| |
| |
| //=========================================================================================================================== |
| // mDNSPlatformTCPCloseConnection |
| //=========================================================================================================================== |
| |
| mDNSexport void mDNSPlatformTCPCloseConnection( TCPSocket *sock ) |
| { |
| check( sock ); |
| |
| if ( sock->connectEvent && sock->m->p->unregisterWaitableEventFunc ) |
| { |
| sock->m->p->unregisterWaitableEventFunc( sock->m, sock->connectEvent ); |
| } |
| |
| if ( sock->fd != INVALID_SOCKET ) |
| { |
| TCPCloseSocket( sock ); |
| |
| QueueUserAPC( ( PAPCFUNC ) TCPFreeSocket, sock->m->p->mainThread, ( ULONG_PTR ) sock ); |
| } |
| } |
| |
| |
| //=========================================================================================================================== |
| // mDNSPlatformReadTCP |
| //=========================================================================================================================== |
| |
| mDNSexport long mDNSPlatformReadTCP( TCPSocket *sock, void *inBuffer, unsigned long inBufferSize, mDNSBool * closed ) |
| { |
| unsigned long bytesLeft; |
| int wsaError; |
| long ret; |
| |
| *closed = sock->closed; |
| wsaError = sock->lastError; |
| ret = -1; |
| |
| if ( *closed ) |
| { |
| ret = 0; |
| } |
| else if ( sock->lastError == 0 ) |
| { |
| // First check to see if we have any data left in our buffer |
| |
| bytesLeft = ( DWORD ) ( sock->eptr - sock->bptr ); |
| |
| if ( bytesLeft ) |
| { |
| unsigned long bytesToCopy = ( bytesLeft < inBufferSize ) ? bytesLeft : inBufferSize; |
| |
| memcpy( inBuffer, sock->bptr, bytesToCopy ); |
| sock->bptr += bytesToCopy; |
| |
| if ( !sock->overlapped.pending && ( sock->bptr == sock->eptr ) ) |
| { |
| sock->bptr = sock->bbuf; |
| sock->eptr = sock->bbuf; |
| } |
| |
| ret = bytesToCopy; |
| } |
| else |
| { |
| wsaError = WSAEWOULDBLOCK; |
| } |
| } |
| |
| // Always set the last winsock error, so that we don't inadvertently use a previous one |
| |
| WSASetLastError( wsaError ); |
| |
| return ret; |
| } |
| |
| |
| //=========================================================================================================================== |
| // mDNSPlatformWriteTCP |
| //=========================================================================================================================== |
| |
| mDNSexport long mDNSPlatformWriteTCP( TCPSocket *sock, const char *inMsg, unsigned long inMsgSize ) |
| { |
| int nsent; |
| OSStatus err; |
| |
| nsent = send( sock->fd, inMsg, inMsgSize, 0 ); |
| |
| err = translate_errno( ( nsent >= 0 ) || ( WSAGetLastError() == WSAEWOULDBLOCK ), WSAGetLastError(), mStatus_UnknownErr ); |
| require_noerr( err, exit ); |
| |
| if ( nsent < 0) |
| { |
| nsent = 0; |
| } |
| |
| exit: |
| |
| return nsent; |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformTCPGetFD |
| //=========================================================================================================================== |
| |
| mDNSexport int mDNSPlatformTCPGetFD(TCPSocket *sock ) |
| { |
| return ( int ) sock->fd; |
| } |
| |
| |
| //=========================================================================================================================== |
| // TCPAddConnection |
| //=========================================================================================================================== |
| |
| mStatus TCPAddSocket( mDNS * const inMDNS, TCPSocket *sock ) |
| { |
| mStatus err; |
| |
| ( void ) inMDNS; |
| |
| sock->bptr = sock->bbuf; |
| sock->eptr = sock->bbuf; |
| sock->ebuf = sock->bbuf + sizeof( sock->bbuf ); |
| |
| dlog( kDebugLevelChatty, DEBUG_NAME "adding TCPSocket 0x%x:%d\n", sock, sock->fd ); |
| err = TCPBeginRecv( sock ); |
| require_noerr( err, exit ); |
| |
| exit: |
| |
| return err; |
| } |
| |
| |
| //=========================================================================================================================== |
| // TCPDidConnect |
| //=========================================================================================================================== |
| |
| mDNSlocal void TCPDidConnect( mDNS * const inMDNS, HANDLE event, void * context ) |
| { |
| TCPSocket * sock = ( TCPSocket* ) context; |
| TCPConnectionCallback callback = NULL; |
| WSANETWORKEVENTS sockEvent; |
| int err = kNoErr; |
| |
| if ( inMDNS->p->unregisterWaitableEventFunc ) |
| { |
| inMDNS->p->unregisterWaitableEventFunc( inMDNS, event ); |
| } |
| |
| if ( sock ) |
| { |
| callback = ( TCPConnectionCallback ) sock->userCallback; |
| err = WSAEnumNetworkEvents( sock->fd, sock->connectEvent, &sockEvent ); |
| require_noerr( err, exit ); |
| require_action( sockEvent.lNetworkEvents & FD_CONNECT, exit, err = mStatus_UnknownErr ); |
| require_action( sockEvent.iErrorCode[ FD_CONNECT_BIT ] == 0, exit, err = sockEvent.iErrorCode[ FD_CONNECT_BIT ] ); |
| |
| sock->connected = mDNStrue; |
| |
| if ( sock->fd != INVALID_SOCKET ) |
| { |
| err = TCPAddSocket( sock->m, sock ); |
| require_noerr( err, exit ); |
| } |
| |
| if ( callback ) |
| { |
| callback( sock, sock->userContext, TRUE, 0 ); |
| } |
| } |
| |
| exit: |
| |
| if ( err && callback ) |
| { |
| callback( sock, sock->userContext, TRUE, err ); |
| } |
| } |
| |
| |
| |
| //=========================================================================================================================== |
| // TCPCanRead |
| //=========================================================================================================================== |
| |
| mDNSlocal void TCPCanRead( TCPSocket * sock ) |
| { |
| TCPConnectionCallback callback = ( TCPConnectionCallback ) sock->userCallback; |
| |
| if ( callback ) |
| { |
| callback( sock, sock->userContext, mDNSfalse, sock->lastError ); |
| } |
| } |
| |
| |
| //=========================================================================================================================== |
| // TCPBeginRecv |
| //=========================================================================================================================== |
| |
| mDNSlocal mStatus TCPBeginRecv( TCPSocket * sock ) |
| { |
| DWORD bytesReceived = 0; |
| DWORD flags = 0; |
| mStatus err; |
| |
| dlog( kDebugLevelChatty, DEBUG_NAME "%s: sock = %d\n", __ROUTINE__, sock->fd ); |
| |
| check( !sock->overlapped.pending ); |
| |
| ZeroMemory( &sock->overlapped.data, sizeof( sock->overlapped.data ) ); |
| sock->overlapped.data.hEvent = sock; |
| |
| sock->overlapped.wbuf.buf = ( char* ) sock->eptr; |
| sock->overlapped.wbuf.len = ( ULONG) ( sock->ebuf - sock->eptr ); |
| |
| err = WSARecv( sock->fd, &sock->overlapped.wbuf, 1, &bytesReceived, &flags, &sock->overlapped.data, ( LPWSAOVERLAPPED_COMPLETION_ROUTINE ) TCPEndRecv ); |
| err = translate_errno( ( err == 0 ) || ( WSAGetLastError() == WSA_IO_PENDING ), WSAGetLastError(), kUnknownErr ); |
| require_noerr( err, exit ); |
| |
| sock->overlapped.pending = TRUE; |
| |
| exit: |
| |
| return err; |
| } |
| |
| |
| //=========================================================================================================================== |
| // TCPEndRecv |
| //=========================================================================================================================== |
| |
| mDNSlocal void CALLBACK TCPEndRecv( DWORD error, DWORD bytesTransferred, LPWSAOVERLAPPED overlapped, DWORD flags ) |
| { |
| TCPSocket * sock; |
| |
| ( void ) flags; |
| |
| dlog( kDebugLevelChatty, DEBUG_NAME "%s: error = %d, bytesTransferred = %d\n", __ROUTINE__, error, bytesTransferred ); |
| sock = ( overlapped != NULL ) ? overlapped->hEvent : NULL; |
| require_action( sock, exit, error = ( DWORD ) mStatus_BadStateErr ); |
| dlog( kDebugLevelChatty, DEBUG_NAME "%s: sock = %d\n", __ROUTINE__, sock->fd ); |
| sock->overlapped.error = error; |
| sock->overlapped.bytesTransferred = bytesTransferred; |
| check( sock->overlapped.pending ); |
| sock->overlapped.pending = FALSE; |
| |
| // Queue this socket |
| |
| AddToTail( &gTCPDispatchableSockets, sock ); |
| |
| exit: |
| |
| return; |
| } |
| |
| |
| |
| //=========================================================================================================================== |
| // mDNSPlatformUDPSocket |
| //=========================================================================================================================== |
| |
| mDNSexport UDPSocket* mDNSPlatformUDPSocket(mDNS *const m, const mDNSIPPort requestedport) |
| { |
| UDPSocket* sock = NULL; |
| mDNSIPPort port = requestedport; |
| mStatus err = mStatus_NoError; |
| unsigned i; |
| |
| // Setup connection data object |
| |
| sock = ( UDPSocket* ) malloc(sizeof( UDPSocket ) ); |
| require_action( sock, exit, err = mStatus_NoMemoryErr ); |
| memset( sock, 0, sizeof( UDPSocket ) ); |
| |
| // Create the socket |
| |
| sock->fd = INVALID_SOCKET; |
| sock->recvMsgPtr = m->p->unicastSock4.recvMsgPtr; |
| sock->addr = m->p->unicastSock4.addr; |
| sock->ifd = NULL; |
| sock->overlapped.pending = FALSE; |
| sock->m = m; |
| |
| // Try at most 10000 times to get a unique random port |
| |
| for (i=0; i<10000; i++) |
| { |
| struct sockaddr_in saddr; |
| |
| saddr.sin_family = AF_INET; |
| saddr.sin_addr.s_addr = 0; |
| |
| // The kernel doesn't do cryptographically strong random port |
| // allocation, so we do it ourselves here |
| |
| if (mDNSIPPortIsZero(requestedport)) |
| { |
| port = mDNSOpaque16fromIntVal( ( mDNSu16 ) ( 0xC000 + mDNSRandom(0x3FFF) ) ); |
| } |
| |
| saddr.sin_port = port.NotAnInteger; |
| |
| err = SetupSocket(m, ( struct sockaddr* ) &saddr, port, &sock->fd ); |
| if (!err) break; |
| } |
| |
| require_noerr( err, exit ); |
| |
| // Set the port |
| |
| sock->port = port; |
| |
| // Arm the completion routine |
| |
| err = UDPBeginRecv( sock ); |
| require_noerr( err, exit ); |
| |
| // Bookkeeping |
| |
| sock->next = gUDPSockets; |
| gUDPSockets = sock; |
| gUDPNumSockets++; |
| |
| exit: |
| |
| if ( err && sock ) |
| { |
| UDPFreeSocket( sock ); |
| sock = NULL; |
| } |
| |
| return sock; |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformUDPClose |
| //=========================================================================================================================== |
| |
| mDNSexport void mDNSPlatformUDPClose( UDPSocket *sock ) |
| { |
| UDPSocket * current = gUDPSockets; |
| UDPSocket * last = NULL; |
| |
| while ( current ) |
| { |
| if ( current == sock ) |
| { |
| if ( last == NULL ) |
| { |
| gUDPSockets = sock->next; |
| } |
| else |
| { |
| last->next = sock->next; |
| } |
| |
| // Alertable I/O is great, except not so much when it comes to closing |
| // the socket. Anything that has been previously queued for this socket |
| // will stay in the queue after you close the socket. This is problematic |
| // for obvious reasons. So we'll attempt to workaround this by closing |
| // the socket which will prevent any further queued packets and then not calling |
| // UDPFreeSocket directly, but by queueing it using QueueUserAPC. The queues |
| // are FIFO, so that will execute *after* any other previous items in the queue |
| // |
| // UDPEndRecv will check if the socket is valid, and if not, it will ignore |
| // the packet |
| |
| UDPCloseSocket( sock ); |
| |
| QueueUserAPC( ( PAPCFUNC ) UDPFreeSocket, sock->m->p->mainThread, ( ULONG_PTR ) sock ); |
| |
| gUDPNumSockets--; |
| |
| break; |
| } |
| |
| last = current; |
| current = current->next; |
| } |
| } |
| |
| |
| //=========================================================================================================================== |
| // mDNSPlatformSendUDP |
| //=========================================================================================================================== |
| |
| mDNSexport mStatus |
| mDNSPlatformSendUDP( |
| const mDNS * const inMDNS, |
| const void * const inMsg, |
| const mDNSu8 * const inMsgEnd, |
| mDNSInterfaceID inInterfaceID, |
| UDPSocket * inSrcSocket, |
| const mDNSAddr * inDstIP, |
| mDNSIPPort inDstPort ) |
| { |
| SOCKET sendingsocket = INVALID_SOCKET; |
| mStatus err = mStatus_NoError; |
| mDNSInterfaceData * ifd = (mDNSInterfaceData*) inInterfaceID; |
| struct sockaddr_storage addr; |
| int n; |
| |
| DEBUG_USE_ONLY( inMDNS ); |
| |
| n = (int)( inMsgEnd - ( (const mDNSu8 * const) inMsg ) ); |
| check( inMDNS ); |
| check( inMsg ); |
| check( inMsgEnd ); |
| check( inDstIP ); |
| |
| dlog( kDebugLevelChatty, DEBUG_NAME "platform send %d bytes to %#a:%u\n", n, inDstIP, ntohs( inDstPort.NotAnInteger ) ); |
| |
| if( inDstIP->type == mDNSAddrType_IPv4 ) |
| { |
| struct sockaddr_in * sa4; |
| |
| sa4 = (struct sockaddr_in *) &addr; |
| sa4->sin_family = AF_INET; |
| sa4->sin_port = inDstPort.NotAnInteger; |
| sa4->sin_addr.s_addr = inDstIP->ip.v4.NotAnInteger; |
| sendingsocket = ifd ? ifd->sock.fd : inMDNS->p->unicastSock4.fd; |
| |
| if (inSrcSocket) { sendingsocket = inSrcSocket->fd; debugf("mDNSPlatformSendUDP using port %d, static port %d, sock %d", mDNSVal16(inSrcSocket->port), inMDNS->p->unicastSock4.fd, sendingsocket); } |
| } |
| else if( inDstIP->type == mDNSAddrType_IPv6 ) |
| { |
| struct sockaddr_in6 * sa6; |
| |
| sa6 = (struct sockaddr_in6 *) &addr; |
| sa6->sin6_family = AF_INET6; |
| sa6->sin6_port = inDstPort.NotAnInteger; |
| sa6->sin6_flowinfo = 0; |
| sa6->sin6_addr = *( (struct in6_addr *) &inDstIP->ip.v6 ); |
| sa6->sin6_scope_id = 0; // Windows requires the scope ID to be zero. IPV6_MULTICAST_IF specifies interface. |
| sendingsocket = ifd ? ifd->sock.fd : inMDNS->p->unicastSock6.fd; |
| } |
| else |
| { |
| dlog( kDebugLevelError, DEBUG_NAME "%s: dst is not an IPv4 or IPv6 address (type=%d)\n", __ROUTINE__, inDstIP->type ); |
| err = mStatus_BadParamErr; |
| goto exit; |
| } |
| |
| if (IsValidSocket(sendingsocket)) |
| { |
| n = sendto( sendingsocket, (char *) inMsg, n, 0, (struct sockaddr *) &addr, sizeof( addr ) ); |
| err = translate_errno( n > 0, errno_compat(), kWriteErr ); |
| |
| if ( err ) |
| { |
| // Don't report EHOSTDOWN (i.e. ARP failure), ENETDOWN, or no route to host for unicast destinations |
| |
| if ( !mDNSAddressIsAllDNSLinkGroup( inDstIP ) && ( WSAGetLastError() == WSAEHOSTDOWN || WSAGetLastError() == WSAENETDOWN || WSAGetLastError() == WSAEHOSTUNREACH || WSAGetLastError() == WSAENETUNREACH ) ) |
| { |
| err = mStatus_TransientErr; |
| } |
| else |
| { |
| require_noerr( err, exit ); |
| } |
| } |
| } |
| |
| exit: |
| return( err ); |
| } |
| |
| |
| mDNSexport void mDNSPlatformUpdateProxyList(mDNS *const m, const mDNSInterfaceID InterfaceID) |
| { |
| DEBUG_UNUSED( m ); |
| DEBUG_UNUSED( InterfaceID ); |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformSendRawPacket |
| //=========================================================================================================================== |
| |
| mDNSexport void mDNSPlatformSetAllowSleep(mDNS *const m, mDNSBool allowSleep, const char *reason)
|
| {
|
| DEBUG_UNUSED( m );
|
| DEBUG_UNUSED( allowSleep );
|
| DEBUG_UNUSED( reason );
|
| }
|
| |
| mDNSexport void mDNSPlatformSendRawPacket(const void *const msg, const mDNSu8 *const end, mDNSInterfaceID InterfaceID) |
| { |
| DEBUG_UNUSED( msg ); |
| DEBUG_UNUSED( end ); |
| DEBUG_UNUSED( InterfaceID ); |
| } |
| |
| mDNSexport void mDNSPlatformReceiveRawPacket(const void *const msg, const mDNSu8 *const end, mDNSInterfaceID InterfaceID) |
| { |
| DEBUG_UNUSED( msg ); |
| DEBUG_UNUSED( end ); |
| DEBUG_UNUSED( InterfaceID ); |
| } |
| |
| mDNSexport void mDNSPlatformSetLocalAddressCacheEntry(mDNS *const m, const mDNSAddr *const tpa, const mDNSEthAddr *const tha, mDNSInterfaceID InterfaceID) |
| { |
| DEBUG_UNUSED( m ); |
| DEBUG_UNUSED( tpa ); |
| DEBUG_UNUSED( tha ); |
| DEBUG_UNUSED( InterfaceID ); |
| } |
| |
| mDNSexport void mDNSPlatformWriteDebugMsg(const char *msg) |
| { |
| dlog( kDebugLevelInfo, "%s\n", msg ); |
| } |
| |
| mDNSexport void mDNSPlatformWriteLogMsg( const char * ident, const char * msg, mDNSLogLevel_t loglevel ) |
| { |
| extern mDNS mDNSStorage; |
| int type; |
| |
| DEBUG_UNUSED( ident ); |
| |
| type = EVENTLOG_ERROR_TYPE; |
| |
| switch (loglevel) |
| { |
| case MDNS_LOG_MSG: type = EVENTLOG_ERROR_TYPE; break; |
| case MDNS_LOG_OPERATION: type = EVENTLOG_WARNING_TYPE; break; |
| case MDNS_LOG_SPS: type = EVENTLOG_INFORMATION_TYPE; break; |
| case MDNS_LOG_INFO: type = EVENTLOG_INFORMATION_TYPE; break; |
| case MDNS_LOG_DEBUG: type = EVENTLOG_INFORMATION_TYPE; break; |
| default: |
| fprintf(stderr, "Unknown loglevel %d, assuming LOG_ERR\n", loglevel); |
| fflush(stderr); |
| } |
| |
| mDNSStorage.p->reportStatusFunc( type, msg ); |
| dlog( kDebugLevelInfo, "%s\n", msg ); |
| } |
| |
| mDNSexport void mDNSPlatformSourceAddrForDest( mDNSAddr * const src, const mDNSAddr * const dst ) |
| { |
| DEBUG_UNUSED( src ); |
| DEBUG_UNUSED( dst ); |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformTLSSetupCerts |
| //=========================================================================================================================== |
| |
| mDNSexport mStatus |
| mDNSPlatformTLSSetupCerts(void) |
| { |
| return mStatus_UnsupportedErr; |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformTLSTearDownCerts |
| //=========================================================================================================================== |
| |
| mDNSexport void |
| mDNSPlatformTLSTearDownCerts(void) |
| { |
| } |
| |
| //=========================================================================================================================== |
| // mDNSPlatformSetDNSConfig |
| //=========================================================================================================================== |
| |
| mDNSlocal void SetDNSServers( mDNS *const m ); |
| mDNSlocal void SetSearchDomainList( void ); |
| |
| mDNSexport void mDNSPlatformSetDNSConfig(mDNS *const m, mDNSBool setservers, mDNSBool setsearch, domainname *const fqdn, DNameListElem **regDomains, DNameListElem **browseDomains) |
| { |
| if (setservers) SetDNSServers(m); |
| if (setsearch) SetSearchDomainList(); |
| |
| if ( fqdn ) |
| { |
| GetDDNSFQDN( fqdn ); |
| } |
| |
| if ( browseDomains ) |
| { |
| GetDDNSDomains( browseDomains, kServiceParametersNode TEXT("\\DynDNS\\Setup\\") kServiceDynDNSBrowseDomains ); |
| } |
| |
| if ( regDomains ) |
| { |
| GetDDNSDomains( regDomains, kServiceParametersNode TEXT("\\DynDNS\\Setup\\") kServiceDynDNSRegistrationDomains ); |
| } |
| } |
| |
| |
| //=========================================================================================================================== |
| // mDNSPlatformDynDNSHostNameStatusChanged |
| //=========================================================================================================================== |
| |
| mDNSexport void |
| mDNSPlatformDynDNSHostNameStatusChanged(const domainname *const dname, const mStatus status) |
| { |
| char uname[MAX_ESCAPED_DOMAIN_NAME]; |
| BYTE bStatus; |
| LPCTSTR name; |
| HKEY key = NULL; |
| mStatus err; |
| char * p; |
| |
| ConvertDomainNameToCString(dname, uname); |
| |
| p = uname; |
| |
| while (*p) |
| { |
| *p = (char) tolower(*p); |
| if (!(*(p+1)) && *p == '.') *p = 0; // if last character, strip trailing dot |
| p++; |
| } |
| |
| check( strlen( p ) <= MAX_ESCAPED_DOMAIN_NAME ); |
| name = kServiceParametersNode TEXT("\\DynDNS\\State\\HostNames"); |
| err = RegCreateKey( HKEY_LOCAL_MACHINE, name, &key ); |
| require_noerr( err, exit ); |
| |
| bStatus = ( status ) ? 0 : 1; |
| err = RegSetValueEx( key, kServiceDynDNSStatus, 0, REG_DWORD, (const LPBYTE) &bStatus, sizeof(DWORD) ); |
| require_noerr( err, exit ); |
| |
| exit: |
| |
| if ( key ) |
| { |
| RegCloseKey( key ); |
| } |
| |
| return; |
| } |
| |
| |
| mDNSexport void FreeEtcHosts(mDNS *const m, AuthRecord *const rr, mStatus result) |
| { |
| (void)m; // unused |
| (void)rr; |
| (void)result; |
| } |
| |
| |
| |
| //=========================================================================================================================== |
| // SetDomainSecrets |
| //=========================================================================================================================== |
| |
| // This routine needs to be called whenever the system secrets database changes. |
| // We call it from DynDNSConfigDidChange and mDNSPlatformInit |
| |
| void |
| SetDomainSecrets( mDNS * const m ) |
| { |
| DomainAuthInfo *ptr; |
| domainname fqdn; |
| DNameListElem * regDomains = NULL; |
| |
| // Rather than immediately deleting all keys now, we mark them for deletion in ten seconds. |
| // In the case where the user simultaneously removes their DDNS host name and the key |
| // for it, this gives mDNSResponder ten seconds to gracefully delete the name from the |
| // server before it loses access to the necessary key. Otherwise, we'd leave orphaned |
| // address records behind that we no longer have permission to delete. |
| |
| for (ptr = m->AuthInfoList; ptr; ptr = ptr->next) |
| ptr->deltime = NonZeroTime(m->timenow + mDNSPlatformOneSecond*10); |
| |
| GetDDNSFQDN( &fqdn ); |
| |
| if ( fqdn.c[ 0 ] ) |
| { |
| SetDomainSecret( m, &fqdn ); |
| } |
| |
| GetDDNSDomains( ®Domains, kServiceParametersNode TEXT("\\DynDNS\\Setup\\") kServiceDynDNSRegistrationDomains ); |
| |
| while ( regDomains ) |
| { |
| DNameListElem * current = regDomains; |
| SetDomainSecret( m, ¤t->name ); |
| regDomains = regDomains->next; |
| free( current ); |
| } |
| } |
| |
| |
| //=========================================================================================================================== |
| // SetSearchDomainList |
| //=========================================================================================================================== |
| |
| mDNSlocal void SetDomainFromDHCP( void ); |
| mDNSlocal void SetReverseMapSearchDomainList( void ); |
| |
| mDNSlocal void |
| SetSearchDomainList( void ) |
| { |
| char * searchList = NULL; |
| DWORD searchListLen; |
| //DNameListElem * head = NULL; |
| //DNameListElem * current = NULL; |
| char * tok; |
| HKEY key; |
| mStatus err; |
| |
| err = RegCreateKey( HKEY_LOCAL_MACHINE, TEXT("SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters"), &key ); |
| require_noerr( err, exit ); |
| |
| err = RegQueryString( key, "SearchList", &searchList, &searchListLen, NULL ); |
| require_noerr( err, exit ); |
| |
| // Windows separates the search domains with ',' |
| |
| tok = strtok( searchList, "," ); |
| while ( tok ) |
| { |
| if ( ( strcmp( tok, "" ) != 0 ) && ( strcmp( tok, "." ) != 0 ) ) |
| mDNS_AddSearchDomain_CString(tok, mDNSNULL); |
| tok = strtok( NULL, "," ); |
| } |
| |
| exit: |
| |
| if ( searchList ) |
| { |
| free( searchList ); |
| } |
| |
| if ( key ) |
| { |
| RegCloseKey( key ); |
| } |
| |
| SetDomainFromDHCP(); |
| SetReverseMapSearchDomainList(); |
| } |
| |
| |
| //=========================================================================================================================== |
| // SetReverseMapSearchDomainList |
| //=========================================================================================================================== |
| |
| mDNSlocal void |
| SetReverseMapSearchDomainList( void ) |
| { |
| struct ifaddrs * ifa; |
| |
| ifa = myGetIfAddrs( 1 ); |
| while (ifa) |
| { |
| mDNSAddr addr; |
| |
| if (ifa->ifa_addr->sa_family == AF_INET && !SetupAddr(&addr, ifa->ifa_addr) && !(ifa->ifa_flags & IFF_LOOPBACK) && ifa->ifa_netmask) |
| { |
| mDNSAddr netmask; |
| char buffer[256]; |
| |
| if (!SetupAddr(&netmask, ifa->ifa_netmask)) |
| { |
| sprintf(buffer, "%d.%d.%d.%d.in-addr.arpa.", addr.ip.v4.b[3] & netmask.ip.v4.b[3], |
| addr.ip.v4.b[2] & netmask.ip.v4.b[2], |
| addr.ip.v4.b[1] & netmask.ip.v4.b[1], |
| addr.ip.v4.b[0] & netmask.ip.v4.b[0]); |
| mDNS_AddSearchDomain_CString(buffer, mDNSNULL); |
| } |
| } |
| |
| ifa = ifa->ifa_next; |
| } |
| |
| return; |
| } |
| |
| |
| //=========================================================================================================================== |
| // SetDNSServers |
| //=========================================================================================================================== |
| |
| mDNSlocal void |
| SetDNSServers( mDNS *const m ) |
| { |
| PIP_PER_ADAPTER_INFO pAdapterInfo = NULL; |
| FIXED_INFO * fixedInfo = NULL; |
| ULONG bufLen = 0; |
| IP_ADDR_STRING * dnsServerList; |
| IP_ADDR_STRING * ipAddr; |
| DWORD index; |
| int i = 0; |
| mStatus err = kUnknownErr; |
| |
| // Get the primary interface. |
| |
| index = GetPrimaryInterface(); |
| |
| // This should have the interface index of the primary index. Fall back in cases where |
| // it can't be determined. |
| |
| if ( index ) |
| { |
| bufLen = 0; |
| |
| for ( i = 0; i < 100; i++ ) |
| { |
| err = GetPerAdapterInfo( index, pAdapterInfo, &bufLen ); |
| |
| if ( err != ERROR_BUFFER_OVERFLOW ) |
| { |
| break; |
| } |
| |
| pAdapterInfo = (PIP_PER_ADAPTER_INFO) realloc( pAdapterInfo, bufLen ); |
| require_action( pAdapterInfo, exit, err = mStatus_NoMemoryErr ); |
| } |
| |
| require_noerr( err, exit ); |
| |
| dnsServerList = &pAdapterInfo->DnsServerList; |
| } |
| else |
| { |
| bufLen = sizeof( FIXED_INFO ); |
| |
| for ( i = 0; i < 100; i++ ) |
| { |
| if ( fixedInfo ) |
| { |
| GlobalFree( fixedInfo ); |
| fixedInfo = NULL; |
| } |
| |
| fixedInfo = (FIXED_INFO*) GlobalAlloc( GPTR, bufLen ); |
| require_action( fixedInfo, exit, err = mStatus_NoMemoryErr ); |
| |
| err = GetNetworkParams( fixedInfo, &bufLen ); |
| |
| if ( err != ERROR_BUFFER_OVERFLOW ) |
| { |
| break; |
| } |
| } |
| |
| require_noerr( err, exit ); |
| |
| dnsServerList = &fixedInfo->DnsServerList; |
| } |
| |
| for ( ipAddr = dnsServerList; ipAddr; ipAddr = ipAddr->Next ) |
| { |
| mDNSAddr addr; |
| err = StringToAddress( &addr, ipAddr->IpAddress.String ); |
| if ( !err ) mDNS_AddDNSServer(m, mDNSNULL, mDNSInterface_Any, &addr, UnicastDNSPort, mDNSfalse, 0); |
| } |
| |
| exit: |
| |
| if ( pAdapterInfo ) |
| { |
| free( pAdapterInfo ); |
| } |
| |
| if ( fixedInfo ) |
| { |
| GlobalFree( fixedInfo ); |
| } |
| } |
| |
| |
| //=========================================================================================================================== |
| // SetDomainFromDHCP |
| //=========================================================================================================================== |
| |
| mDNSlocal void |
| SetDomainFromDHCP( void ) |
| { |
| int i = 0; |
| IP_ADAPTER_INFO * pAdapterInfo; |
| IP_ADAPTER_INFO * pAdapter; |
| DWORD bufLen; |
| DWORD index; |
| HKEY key = NULL; |
| LPSTR domain = NULL; |
| DWORD dwSize; |
| mStatus err = mStatus_NoError; |
| |
| pAdapterInfo = NULL; |
| |
| for ( i = 0; i < 100; i++ ) |
| { |
| err = GetAdaptersInfo( pAdapterInfo, &bufLen); |
| |
| if ( err != ERROR_BUFFER_OVERFLOW ) |
| { |
| break; |
| } |
| |
| pAdapterInfo = (IP_ADAPTER_INFO*) realloc( pAdapterInfo, bufLen ); |
| require_action( pAdapterInfo, exit, err = kNoMemoryErr ); |
| } |
| |
| require_noerr( err, exit ); |
| |
| index = GetPrimaryInterface(); |
| |
| for ( pAdapter = pAdapterInfo; pAdapter; pAdapter = pAdapter->Next ) |
| { |
| if ( pAdapter->IpAddressList.IpAddress.String && |
| pAdapter->IpAddressList.IpAddress.String[0] && |
| pAdapter->GatewayList.IpAddress.String && |
| pAdapter->GatewayList.IpAddress.String[0] && |
| ( !index || ( pAdapter->Index == index ) ) ) |
| { |
| // Found one that will work |
| |
| char keyName[1024]; |
| |
| _snprintf( keyName, 1024, "%s%s", "SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters\\Interfaces\\", pAdapter->AdapterName ); |
| |
| err = RegCreateKeyA( HKEY_LOCAL_MACHINE, keyName, &key ); |
| require_noerr( err, exit ); |
| |
| err = RegQueryString( key, "Domain", &domain, &dwSize, NULL ); |
| check_noerr( err ); |
| |
| if ( !domain || !domain[0] ) |
| { |
| if ( domain ) |
| { |
| free( domain ); |
| domain = NULL; |
| } |
| |
| err = RegQueryString( key, "DhcpDomain", &domain, &dwSize, NULL ); |
| check_noerr( err ); |
| } |
| |
| if ( domain && domain[0] ) mDNS_AddSearchDomain_CString(domain, mDNSNULL); |
| |
| break; |
| } |
| } |
| |
| exit: |
| |
| if ( pAdapterInfo ) |
| { |
| free( pAdapterInfo ); |
| } |
| |
| if ( domain ) |
| { |
| free( domain ); |
| } |
| |
| if ( key ) |
| { |
| RegCloseKey( key ); |
| } |
| } |
| |
| |
| //=========================================================================================================================== |
| // mDNSPlatformGetPrimaryInterface |
| //=========================================================================================================================== |
| |
| mDNSexport mStatus |
| mDNSPlatformGetPrimaryInterface( mDNS * const m, mDNSAddr * v4, mDNSAddr * v6, mDNSAddr * router ) |
| { |
| IP_ADAPTER_INFO * pAdapterInfo; |
| IP_ADAPTER_INFO * pAdapter; |
| DWORD bufLen; |
| int i; |
| BOOL found; |
| DWORD index; |
| mStatus err = mStatus_NoError; |
| |
| DEBUG_UNUSED( m ); |
| |
| *v6 = zeroAddr; |
| |
| pAdapterInfo = NULL; |
| bufLen = 0; |
| found = FALSE; |
| |
| for ( i = 0; i < 100; i++ ) |
| { |
| err = GetAdaptersInfo( pAdapterInfo, &bufLen); |
| |
| if ( err != ERROR_BUFFER_OVERFLOW ) |
| { |
| break; |
| } |
| |
| pAdapterInfo = (IP_ADAPTER_INFO*) realloc( pAdapterInfo, bufLen ); |
| require_action( pAdapterInfo, exit, err = kNoMemoryErr ); |
| } |
| |
| require_noerr( err, exit ); |
| |
| index = GetPrimaryInterface(); |
| |
| for ( pAdapter = pAdapterInfo; pAdapter; pAdapter = pAdapter->Next ) |
| { |
| if ( pAdapter->IpAddressList.IpAddress.String && |
| pAdapter->IpAddressList.IpAddress.String[0] && |
| pAdapter->GatewayList.IpAddress.String && |
| pAdapter->GatewayList.IpAddress.String[0] && |
| ( StringToAddress( v4, pAdapter->IpAddressList.IpAddress.String ) == mStatus_NoError ) && |
| ( StringToAddress( router, pAdapter->GatewayList.IpAddress.String ) == mStatus_NoError ) && |
| ( !index || ( pAdapter->Index == index ) ) ) |
| { |
| // Found one that will work |
| |
| if ( pAdapter->AddressLength == sizeof( m->PrimaryMAC ) ) |
| { |
| memcpy( &m->PrimaryMAC, pAdapter->Address, pAdapter->AddressLength ); |
| } |
| |
| found = TRUE; |
| break; |
| } |
| } |
| |
| exit: |
| |
| if ( pAdapterInfo ) |
| { |
| free( pAdapterInfo ); |
| } |
| |
| return err; |
| } |
| |
| mDNSexport void mDNSPlatformSendWakeupPacket(mDNS *const m, mDNSInterfaceID InterfaceID, char *EthAddr, char *IPAddr, int iteration) |
| { |
| (void) m; |
| (void) InterfaceID; |
| (void) EthAddr; |
| (void) IPAddr; |
| (void) iteration; |
| } |
| |
| mDNSexport mDNSBool mDNSPlatformValidRecordForInterface(AuthRecord *rr, const NetworkInterfaceInfo *intf) |
| { |
| (void) rr; |
| (void) intf; |
| |
| return 1; |
| } |
| |
| |
| #if 0 |
| #pragma mark - |
| #endif |
| |
| //=========================================================================================================================== |
| // debugf_ |
| //=========================================================================================================================== |
| #if( MDNS_DEBUGMSGS ) |
| mDNSexport void debugf_( const char *inFormat, ... ) |
| { |
| char buffer[ 512 ]; |
| va_list args; |
| mDNSu32 length; |
| |
| va_start( args, inFormat ); |
| length = mDNS_vsnprintf( buffer, sizeof( buffer ), inFormat, args ); |
| va_end( args ); |
| |
| dlog( kDebugLevelInfo, "%s\n", buffer ); |
| } |
| #endif |
| |
| //=========================================================================================================================== |
| // verbosedebugf_ |
| //=========================================================================================================================== |
| |
| #if( MDNS_DEBUGMSGS > 1 ) |
| mDNSexport void verbosedebugf_( const char *inFormat, ... ) |
| { |
| char buffer[ 512 ]; |
| va_list args; |
| mDNSu32 length; |
| |
| va_start( args, inFormat ); |
| length = mDNS_vsnprintf( buffer, sizeof( buffer ), inFormat, args ); |
| va_end( args ); |
| |
| dlog( kDebugLevelVerbose, "%s\n", buffer ); |
| } |
| #endif |
| |
| |
| #if 0 |
| #pragma mark - |
| #pragma mark == Platform Internals == |
| #endif |
| |
| |
| //=========================================================================================================================== |
| // SetupNiceName |
| //=========================================================================================================================== |
| |
| mStatus SetupNiceName( mDNS * const inMDNS ) |
| { |
| HKEY descKey = NULL; |
| char utf8[ 256 ]; |
| LPCTSTR s; |
| LPWSTR joinName; |
| NETSETUP_JOIN_STATUS joinStatus; |
| mStatus err = 0; |
| DWORD namelen; |
| BOOL ok; |
| |
| check( inMDNS ); |
| |
| // Set up the nice name. |
| utf8[0] = '\0'; |
| |
| // First try and open the registry key that contains the computer description value |
| s = TEXT("SYSTEM\\CurrentControlSet\\Services\\lanmanserver\\parameters"); |
| err = RegOpenKeyEx( HKEY_LOCAL_MACHINE, s, 0, KEY_READ, &descKey); |
| check_translated_errno( err == 0, errno_compat(), kNameErr ); |
| |
| if ( !err ) |
| { |
| TCHAR desc[256]; |
| DWORD descSize = sizeof( desc ); |
| |
| // look for the computer description |
| err = RegQueryValueEx( descKey, TEXT("srvcomment"), 0, NULL, (LPBYTE) &desc, &descSize); |
| |
| if ( !err ) |
| { |
| err = TCHARtoUTF8( desc, utf8, sizeof( utf8 ) ); |
| } |
| |
| if ( err ) |
| { |
| utf8[ 0 ] = '\0'; |
| } |
| } |
| |
| // if we can't find it in the registry, then use the hostname of the machine |
| if ( err || ( utf8[ 0 ] == '\0' ) ) |
| { |
| TCHAR hostname[256]; |
| |
| namelen = sizeof( hostname ) / sizeof( TCHAR ); |
| |
| ok = GetComputerNameExW( ComputerNamePhysicalDnsHostname, hostname, &namelen ); |
| err = translate_errno( ok, (mStatus) GetLastError(), kNameErr ); |
| check_noerr( err ); |
| |
| if( !err ) |
| { |
| err = TCHARtoUTF8( hostname, utf8, sizeof( utf8 ) ); |
| } |
| |
| if ( err ) |
| { |
| utf8[ 0 ] = '\0'; |
| } |
| } |
| |
| // if we can't get the hostname |
| if ( err || ( utf8[ 0 ] == '\0' ) ) |
| { |
| // Invalidate name so fall back to a default name. |
| |
| strcpy( utf8, kMDNSDefaultName ); |
| } |
| |
| utf8[ sizeof( utf8 ) - 1 ] = '\0'; |
| inMDNS->nicelabel.c[ 0 ] = (mDNSu8) (strlen( utf8 ) < MAX_DOMAIN_LABEL ? strlen( utf8 ) : MAX_DOMAIN_LABEL); |
| memcpy( &inMDNS->nicelabel.c[ 1 ], utf8, inMDNS->nicelabel.c[ 0 ] ); |
| |
| dlog( kDebugLevelInfo, DEBUG_NAME "nice name \"%.*s\"\n", inMDNS->nicelabel.c[ 0 ], &inMDNS->nicelabel.c[ 1 ] ); |
| |
| if ( descKey ) |
| { |
| RegCloseKey( descKey ); |
| } |
| |
| ZeroMemory( inMDNS->p->nbname, sizeof( inMDNS->p->nbname ) ); |
| ZeroMemory( inMDNS->p->nbdomain, sizeof( inMDNS->p->nbdomain ) ); |
| |
| namelen = sizeof( inMDNS->p->nbname ); |
| ok = GetComputerNameExA( ComputerNamePhysicalNetBIOS, inMDNS->p->nbname, &namelen ); |
| check( ok ); |
| if ( ok ) dlog( kDebugLevelInfo, DEBUG_NAME "netbios name \"%s\"\n", inMDNS->p->nbname ); |
| |
| err = NetGetJoinInformation( NULL, &joinName, &joinStatus ); |
| check ( err == NERR_Success ); |
| if ( err == NERR_Success ) |
| { |
| if ( ( joinStatus == NetSetupWorkgroupName ) || ( joinStatus == NetSetupDomainName ) ) |
| { |
| err = TCHARtoUTF8( joinName, inMDNS->p->nbdomain, sizeof( inMDNS->p->nbdomain ) ); |
| check( !err ); |
| if ( !err ) dlog( kDebugLevelInfo, DEBUG_NAME "netbios domain/workgroup \"%s\"\n", inMDNS->p->nbdomain ); |
| } |
| |
| NetApiBufferFree( joinName ); |
| joinName = NULL; |
| } |
| |
| err = 0; |
| |
| return( err ); |
| } |
| |
| //=========================================================================================================================== |
| // SetupHostName |
| //=========================================================================================================================== |
| |
| mDNSlocal mStatus SetupHostName( mDNS * const inMDNS ) |
| { |
| mStatus err = 0; |
| char tempString[ 256 ]; |
| DWORD tempStringLen; |
| domainlabel tempLabel; |
| BOOL ok; |
| |
| check( inMDNS ); |
| |
| // Set up the nice name. |
| tempString[ 0 ] = '\0'; |
| |
| // use the hostname of the machine |
| tempStringLen = sizeof( tempString ); |
| ok = GetComputerNameExA( ComputerNamePhysicalDnsHostname, tempString, &tempStringLen ); |
| err = translate_errno( ok, (mStatus) GetLastError(), kNameErr ); |
| check_noerr( err ); |
| |
| // if we can't get the hostname |
| if( err || ( tempString[ 0 ] == '\0' ) ) |
| { |
| // Invalidate name so fall back to a default name. |
| |
| strcpy( tempString, kMDNSDefaultName ); |
| } |
| |
| tempString[ sizeof( tempString ) - 1 ] = '\0'; |
| tempLabel.c[ 0 ] = (mDNSu8) (strlen( tempString ) < MAX_DOMAIN_LABEL ? strlen( tempString ) : MAX_DOMAIN_LABEL ); |
| memcpy( &tempLabel.c[ 1 ], tempString, tempLabel.c[ 0 ] ); |
| |
| // Set up the host name. |
| |
| ConvertUTF8PstringToRFC1034HostLabel( tempLabel.c, &inMDNS->hostlabel ); |
| if( inMDNS->hostlabel.c[ 0 ] == 0 ) |
| { |
| // Nice name has no characters that are representable as an RFC1034 name (e.g. Japanese) so use the default. |
| |
| MakeDomainLabelFromLiteralString( &inMDNS->hostlabel, kMDNSDefaultName ); |
| } |
| |
| check( inMDNS->hostlabel.c[ 0 ] != 0 ); |
| |
| mDNS_SetFQDN( inMDNS ); |
| |
| dlog( kDebugLevelInfo, DEBUG_NAME "host name \"%.*s\"\n", inMDNS->hostlabel.c[ 0 ], &inMDNS->hostlabel.c[ 1 ] ); |
| |
| return( err ); |
| } |
| |
| //=========================================================================================================================== |
| // SetupName |
| //=========================================================================================================================== |
| |
| mDNSlocal mStatus SetupName( mDNS * const inMDNS ) |
| { |
| mStatus err = 0; |
| |
| check( inMDNS ); |
| |
| err = SetupNiceName( inMDNS ); |
| check_noerr( err ); |
| |
| err = SetupHostName( inMDNS ); |
| check_noerr( err ); |
| |
| return err; |
| } |
| |
| |
| //=========================================================================================================================== |
| // SetupInterfaceList |
| //=========================================================================================================================== |
| |
| mStatus SetupInterfaceList( mDNS * const inMDNS ) |
| { |
| mStatus err; |
| mDNSInterfaceData ** next; |
| mDNSInterfaceData * ifd; |
| struct ifaddrs * addrs; |
| struct ifaddrs * p; |
| struct ifaddrs * loopbackv4; |
| struct ifaddrs * loopbackv6; |
| u_int flagMask; |
| u_int flagTest; |
| mDNSBool foundv4; |
| mDNSBool foundv6; |
| mDNSBool foundUnicastSock4DestAddr; |
| mDNSBool foundUnicastSock6DestAddr; |
| |
| dlog( kDebugLevelTrace, DEBUG_NAME "setting up interface list\n" ); |
| check( inMDNS ); |
| check( inMDNS->p ); |
| |
| inMDNS->p->registeredLoopback4 = mDNSfalse; |
| inMDNS->p->nextDHCPLeaseExpires = 0x7FFFFFFF; |
| addrs = NULL; |
| foundv4 = mDNSfalse; |
| foundv6 = mDNSfalse; |
| foundUnicastSock4DestAddr = mDNSfalse; |
| foundUnicastSock6DestAddr = mDNSfalse; |
| |
| // Tear down any existing interfaces that may be set up. |
| |
| TearDownInterfaceList( inMDNS ); |
| |
| // Set up the name of this machine. |
| |
| err = SetupName( inMDNS ); |
| check_noerr( err ); |
| |
| // Set up IPv4 interface(s). We have to set up IPv4 first so any IPv6 interface with an IPv4-routable address |
| // can refer to the IPv4 interface when it registers to allow DNS AAAA records over the IPv4 interface. |
| |
| err = getifaddrs( &addrs ); |
| require_noerr( err, exit ); |
| |
| loopbackv4 = NULL; |
| loopbackv6 = NULL; |
| next = &inMDNS->p->interfaceList; |
| |
| flagMask = IFF_UP | IFF_MULTICAST; |
| flagTest = IFF_UP | IFF_MULTICAST; |
| |
| #if( MDNS_WINDOWS_ENABLE_IPV4 ) |
| for( p = addrs; p; p = p->ifa_next ) |
| { |
| if( !p->ifa_addr || ( p->ifa_addr->sa_family != AF_INET ) || ( ( p->ifa_flags & flagMask ) != flagTest ) ) |
| { |
| continue; |
| } |
| if( p->ifa_flags & IFF_LOOPBACK ) |
| { |
| if( !loopbackv4 ) |
| { |
| loopbackv4 = p; |
| } |
| continue; |
| } |
| dlog( kDebugLevelVerbose, DEBUG_NAME "Interface %40s (0x%08X) %##a\n", |
| p->ifa_name ? p->ifa_name : "<null>", p->ifa_extra.index, p->ifa_addr ); |
| |
| err = SetupInterface( inMDNS, p, &ifd ); |
| require_noerr( err, exit ); |
| |
| // If this guy is point-to-point (ifd->interfaceInfo.McastTxRx == 0 ) we still want to |
| // register him, but we also want to note that we haven't found a v4 interface |
| // so that we register loopback so same host operations work |
| |
| if ( ifd->interfaceInfo.McastTxRx == mDNStrue ) |
| { |
| foundv4 = mDNStrue; |
| } |
| |
| if ( p->ifa_dhcpEnabled && ( p->ifa_dhcpLeaseExpires < inMDNS->p->nextDHCPLeaseExpires ) ) |
| { |
| inMDNS->p->nextDHCPLeaseExpires = p->ifa_dhcpLeaseExpires; |
| } |
| |
| // If we're on a platform that doesn't have WSARecvMsg(), there's no way |
| // of determing the destination address of a packet that is sent to us. |
| // For multicast packets, that's easy to determine. But for the unicast |
| // sockets, we'll fake it by taking the address of the first interface |
| // that is successfully setup. |
| |
| if ( !foundUnicastSock4DestAddr ) |
| { |
| inMDNS->p->unicastSock4.addr = ifd->interfaceInfo.ip; |
| foundUnicastSock4DestAddr = TRUE; |
| } |
| |
| *next = ifd; |
| next = &ifd->next; |
| ++inMDNS->p->interfaceCount; |
| } |
| #endif |
| |
| // Set up IPv6 interface(s) after IPv4 is set up (see IPv4 notes above for reasoning). |
| |
| #if( MDNS_WINDOWS_ENABLE_IPV6 ) |
| for( p = addrs; p; p = p->ifa_next ) |
| { |
| if( !p->ifa_addr || ( p->ifa_addr->sa_family != AF_INET6 ) || ( ( p->ifa_flags & flagMask ) != flagTest ) ) |
| { |
| continue; |
| } |
| if( p->ifa_flags & IFF_LOOPBACK ) |
| { |
| if( !loopbackv6 ) |
| { |
| loopbackv6 = p; |
| } |
| continue; |
| } |
| dlog( kDebugLevelVerbose, DEBUG_NAME "Interface %40s (0x%08X) %##a\n", |
| p->ifa_name ? p->ifa_name : "<null>", p->ifa_extra.index, p->ifa_addr ); |
| |
| err = SetupInterface( inMDNS, p, &ifd ); |
| require_noerr( err, exit ); |
| |
| // If this guy is point-to-point (ifd->interfaceInfo.McastTxRx == 0 ) we still want to |
| // register him, but we also want to note that we haven't found a v4 interface |
| // so that we register loopback so same host operations work |
| |
| if ( ifd->interfaceInfo.McastTxRx == mDNStrue ) |
| { |
| foundv6 = mDNStrue; |
| } |
| |
| // If we're on a platform that doesn't have WSARecvMsg(), there's no way |
| // of determing the destination address of a packet that is sent to us. |
| // For multicast packets, that's easy to determine. But for the unicast |
| // sockets, we'll fake it by taking the address of the first interface |
| // that is successfully setup. |
| |
| if ( !foundUnicastSock6DestAddr ) |
| { |
| inMDNS->p->unicastSock6.addr = ifd->interfaceInfo.ip; |
| foundUnicastSock6DestAddr = TRUE; |
| } |
| |
| *next = ifd; |
| next = &ifd->next; |
| ++inMDNS->p->interfaceCount; |
| } |
| #endif |
| |
| // If there are no real interfaces, but there is a loopback interface, use that so same-machine operations work. |
| |
| #if( !MDNS_WINDOWS_ENABLE_IPV4 && !MDNS_WINDOWS_ENABLE_IPV6 ) |
| |
| flagMask |= IFF_LOOPBACK; |
| flagTest |= IFF_LOOPBACK; |
| |
| for( p = addrs; p; p = p->ifa_next ) |
| { |
| if( !p->ifa_addr || ( ( p->ifa_flags & flagMask ) != flagTest ) ) |
| { |
| continue; |
| } |
| if( ( p->ifa_addr->sa_family != AF_INET ) && ( p->ifa_addr->sa_family != AF_INET6 ) ) |
| { |
| continue; |
| } |
| |
| v4loopback = p; |
| break; |
| } |
| |
| #endif |
| |
| if ( !foundv4 && loopbackv4 ) |
| { |
| dlog( kDebugLevelInfo, DEBUG_NAME "Interface %40s (0x%08X) %##a\n", |
| loopbackv4->ifa_name ? loopbackv4->ifa_name : "<null>", loopbackv4->ifa_extra.index, loopbackv4->ifa_addr ); |
| |
| err = SetupInterface( inMDNS, loopbackv4, &ifd ); |
| require_noerr( err, exit ); |
| |
| inMDNS->p->registeredLoopback4 = mDNStrue; |
| |
| #if( MDNS_WINDOWS_ENABLE_IPV4 ) |
| |
| // If we're on a platform that doesn't have WSARecvMsg(), there's no way |
| // of determing the destination address of a packet that is sent to us. |
| // For multicast packets, that's easy to determine. But for the unicast |
| // sockets, we'll fake it by taking the address of the first interface |
| // that is successfully setup. |
| |
| if ( !foundUnicastSock4DestAddr ) |
| { |
| inMDNS->p->unicastSock4.addr = ifd->sock.addr; |
| foundUnicastSock4DestAddr = TRUE; |
| } |
| #endif |
| |
| *next = ifd; |
| next = &ifd->next; |
| ++inMDNS->p->interfaceCount; |
| } |
| |
| if ( !foundv6 && loopbackv6 ) |
| { |
| dlog( kDebugLevelInfo, DEBUG_NAME "Interface %40s (0x%08X) %##a\n", |
| loopbackv6->ifa_name ? loopbackv6->ifa_name : "<null>", loopbackv6->ifa_extra.index, loopbackv6->ifa_addr ); |
| |
| err = SetupInterface( inMDNS, loopbackv6, &ifd ); |
| require_noerr( err, exit ); |
| |
| #if( MDNS_WINDOWS_ENABLE_IPV6 ) |
| |
| // If we're on a platform that doesn't have WSARecvMsg(), there's no way |
| // of determing the destination address of a packet that is sent to us. |
| // For multicast packets, that's easy to determine. But for the unicast |
| // sockets, we'll fake it by taking the address of the first interface |
| // that is successfully setup. |
| |
| if ( !foundUnicastSock6DestAddr ) |
| { |
| inMDNS->p->unicastSock6.addr = ifd->sock.addr; |
| foundUnicastSock6DestAddr = TRUE; |
| } |
| #endif |
| |
| *next = ifd; |
| next = &ifd->next; |
| ++inMDNS->p->interfaceCount; |
| } |
| |
| CheckFileShares( inMDNS ); |
| |
| exit: |
| if( err ) |
| { |
| TearDownInterfaceList( inMDNS ); |
| } |
| if( addrs ) |
| { |
| freeifaddrs( addrs ); |
| } |
| dlog( kDebugLevelTrace, DEBUG_NAME "setting up interface list done (err=%d %m)\n", err, err ); |
| return( err ); |
| } |
| |
| //=========================================================================================================================== |
| // TearDownInterfaceList |
| //=========================================================================================================================== |
| |
| mStatus TearDownInterfaceList( mDNS * const inMDNS ) |
| { |
| mDNSInterfaceData ** p; |
| mDNSInterfaceData * ifd; |
| |
| dlog( kDebugLevelTrace, DEBUG_NAME "tearing down interface list\n" ); |
| check( inMDNS ); |
| check( inMDNS->p ); |
| |
| // Free any interfaces that were previously marked inactive and are no longer referenced by the mDNS cache. |
| // Interfaces are marked inactive, but not deleted immediately if they were still referenced by the mDNS cache |
| // so that remove events that occur after an interface goes away can still report the correct interface. |
| |
| p = &inMDNS->p->inactiveInterfaceList; |
| while( *p ) |
| { |
| ifd = *p; |
| if( NumCacheRecordsForInterfaceID( inMDNS, (mDNSInterfaceID) ifd ) > 0 ) |
| { |
| p = &ifd->next; |
| continue; |
| } |
| |
| dlog( kDebugLevelInfo, DEBUG_NAME "freeing unreferenced, inactive interface %#p %#a\n", ifd, &ifd->interfaceInfo.ip ); |
| *p = ifd->next; |
| |
| QueueUserAPC( ( PAPCFUNC ) FreeInterface, inMDNS->p->mainThread, ( ULONG_PTR ) ifd ); |
| } |
| |
| // Tear down all the interfaces. |
| |
| while( inMDNS->p->interfaceList ) |
| { |
| ifd = inMDNS->p->interfaceList; |
| inMDNS->p->interfaceList = ifd->next; |
| |
| TearDownInterface( inMDNS, ifd ); |
| } |
| inMDNS->p->interfaceCount = 0; |
| |
| dlog( kDebugLevelTrace, DEBUG_NAME "tearing down interface list done\n" ); |
| return( mStatus_NoError ); |
| } |
| |
| //=========================================================================================================================== |
| // SetupInterface |
| //=========================================================================================================================== |
| |
| mDNSlocal mStatus SetupInterface( mDNS * const inMDNS, const struct ifaddrs *inIFA, mDNSInterfaceData **outIFD ) |
| { |
| mDNSInterfaceData * ifd; |
| mDNSInterfaceData * p; |
| mStatus err; |
| |
| ifd = NULL; |
| dlog( kDebugLevelTrace, DEBUG_NAME "setting up interface\n" ); |
| check( inMDNS ); |
| check( inMDNS->p ); |
| check( inIFA ); |
| check( inIFA->ifa_addr ); |
| check( outIFD ); |
| |
| // Allocate memory for the interface and initialize it. |
| |
| ifd = (mDNSInterfaceData *) calloc( 1, sizeof( *ifd ) ); |
| require_action( ifd, exit, err = mStatus_NoMemoryErr ); |
| ifd->sock.fd = kInvalidSocketRef; |
| ifd->sock.overlapped.pending = FALSE; |
| ifd->sock.ifd = ifd; |
| ifd->sock.next = NULL; |
| ifd->sock.m = inMDNS; |
| ifd->index = inIFA->ifa_extra.index; |
| ifd->scopeID = inIFA->ifa_extra.index; |
| check( strlen( inIFA->ifa_name ) < sizeof( ifd->name ) ); |
| strncpy( ifd->name, inIFA->ifa_name, sizeof( ifd->name ) - 1 ); |
| ifd->name[ sizeof( ifd->name ) - 1 ] = '\0'; |
| |
| strncpy(ifd->interfaceInfo.ifname, inIFA->ifa_name, sizeof(ifd->interfaceInfo.ifname)); |
| ifd->interfaceInfo.ifname[sizeof(ifd->interfaceInfo.ifname)-1] = 0; |
| |
| // We always send and receive using IPv4, but to reduce traffic, we send and receive using IPv6 only on interfaces |
| // that have no routable IPv4 address. Having a routable IPv4 address assigned is a reasonable indicator of being |
| // on a large configured network, which means there's a good chance that most or all the other devices on that |
| // network should also have v4. By doing this we lose the ability to talk to true v6-only devices on that link, |
| // but we cut the packet rate in half. At this time, reducing the packet rate is more important than v6-only |
| // devices on a large configured network, so we are willing to make that sacrifice. |
| |
| ifd->interfaceInfo.McastTxRx = ( ( inIFA->ifa_flags & IFF_MULTICAST ) && !( inIFA->ifa_flags & IFF_POINTTOPOINT ) ) ? mDNStrue : mDNSfalse; |
| ifd->interfaceInfo.InterfaceID = NULL; |
| |
| for( p = inMDNS->p->interfaceList; p; p = p->next ) |
| { |
| if ( strcmp( p->name, ifd->name ) == 0 ) |
| { |
| if (!ifd->interfaceInfo.InterfaceID) |
| { |
| ifd->interfaceInfo.InterfaceID = (mDNSInterfaceID) p; |
| } |
| |
| if ( ( inIFA->ifa_addr->sa_family != AF_INET ) && |
| ( p->interfaceInfo.ip.type == mDNSAddrType_IPv4 ) && |
| ( p->interfaceInfo.ip.ip.v4.b[ 0 ] != 169 || p->interfaceInfo.ip.ip.v4.b[ 1 ] != 254 ) ) |
| { |
| ifd->interfaceInfo.McastTxRx = mDNSfalse; |
| } |
| |
| break; |
| } |
| } |
| |
| if ( !ifd->interfaceInfo.InterfaceID ) |
| { |
| ifd->interfaceInfo.InterfaceID = (mDNSInterfaceID) ifd; |
| } |
| |
| // Set up a socket for this interface (if needed). |
| |
| if( ifd->interfaceInfo.McastTxRx ) |
| { |
| DWORD size; |
| |
| err = SetupSocket( inMDNS, inIFA->ifa_addr, MulticastDNSPort, &ifd->sock.fd ); |
| require_noerr( err, exit ); |
| ifd->sock.addr = ( inIFA->ifa_addr->sa_family == AF_INET6 ) ? AllDNSLinkGroup_v6 : AllDNSLinkGroup_v4; |
| ifd->sock.port = MulticastDNSPort; |
| |
| // Get a ptr to the WSARecvMsg function, if supported. Otherwise, we'll fallback to recvfrom. |
| |
| err = WSAIoctl( ifd->sock.fd, SIO_GET_EXTENSION_FUNCTION_POINTER, &kWSARecvMsgGUID, sizeof( kWSARecvMsgGUID ), &ifd->sock.recvMsgPtr, sizeof( ifd->sock.recvMsgPtr ), &size, NULL, NULL ); |
| |
| if ( err ) |
| { |
| ifd->sock.recvMsgPtr = NULL; |
| } |
| } |
| |
| if ( inIFA->ifa_dhcpEnabled && ( inIFA->ifa_dhcpLeaseExpires < inMDNS->p->nextDHCPLeaseExpires ) ) |
| { |
| inMDNS->p->nextDHCPLeaseExpires = inIFA->ifa_dhcpLeaseExpires; |
| } |
| |
| ifd->interfaceInfo.NetWake = inIFA->ifa_womp; |
| |
| // Register this interface with mDNS. |
| |
| err = SockAddrToMDNSAddr( inIFA->ifa_addr, &ifd->interfaceInfo.ip, NULL ); |
| require_noerr( err, exit ); |
| |
| err = SockAddrToMDNSAddr( inIFA->ifa_netmask, &ifd->interfaceInfo.mask, NULL ); |
| require_noerr( err, exit ); |
| |
| memcpy( ifd->interfaceInfo.MAC.b, inIFA->ifa_physaddr, sizeof( ifd->interfaceInfo.MAC.b ) ); |
| |
| ifd->interfaceInfo.Advertise = ( mDNSu8 ) inMDNS->AdvertiseLocalAddresses; |
| |
| if ( ifd->sock.fd != kInvalidSocketRef ) |
| { |
| err = UDPBeginRecv( &ifd->sock ); |
| require_noerr( err, exit ); |
| } |
| |
| err = mDNS_RegisterInterface( inMDNS, &ifd->interfaceInfo, mDNSfalse ); |
| require_noerr( err, exit ); |
| ifd->hostRegistered = mDNStrue; |
| |
| dlog( kDebugLevelInfo, DEBUG_NAME "Registered interface %##a with mDNS\n", inIFA->ifa_addr ); |
| |
| // Success! |
| |
| *outIFD = ifd; |
| ifd = NULL; |
| |
| exit: |
| |
| if( ifd ) |
| { |
| TearDownInterface( inMDNS, ifd ); |
| } |
| dlog( kDebugLevelTrace, DEBUG_NAME "setting up interface done (err=%d %m)\n", err, err ); |
| return( err ); |
| } |
| |
| //=========================================================================================================================== |
| // TearDownInterface |
| //=========================================================================================================================== |
| |
| mDNSlocal mStatus TearDownInterface( mDNS * const inMDNS, mDNSInterfaceData *inIFD ) |
| { |
| check( inMDNS ); |
| check( inIFD ); |
| |
| // Deregister this interface with mDNS. |
| |
| dlog( kDebugLevelInfo, DEBUG_NAME "Deregistering interface %#a with mDNS\n", &inIFD->interfaceInfo.ip ); |
| |
| if( inIFD->hostRegistered ) |
| { |
| inIFD->hostRegistered = mDNSfalse; |
| mDNS_DeregisterInterface( inMDNS, &inIFD->interfaceInfo, mDNSfalse ); |
| } |
| |
| // Tear down the multicast socket. |
| |
| UDPCloseSocket( &inIFD->sock ); |
| |
| // If the interface is still referenced by items in the mDNS cache then put it on the inactive list. This keeps |
| // the InterfaceID valid so remove events report the correct interface. If it is no longer referenced, free it. |
| |
| if( NumCacheRecordsForInterfaceID( inMDNS, (mDNSInterfaceID) inIFD ) > 0 ) |
| { |
| inIFD->next = inMDNS->p->inactiveInterfaceList; |
| inMDNS->p->inactiveInterfaceList = inIFD; |
| dlog( kDebugLevelInfo, DEBUG_NAME "deferring free of interface %#p %#a\n", inIFD, &inIFD->interfaceInfo.ip ); |
| } |
| else |
| { |
| dlog( kDebugLevelInfo, DEBUG_NAME "freeing interface %#p %#a immediately\n", inIFD, &inIFD->interfaceInfo.ip ); |
| QueueUserAPC( ( PAPCFUNC ) FreeInterface, inMDNS->p->mainThread, ( ULONG_PTR ) inIFD ); |
| } |
| |
| return( mStatus_NoError ); |
| } |
| |
| mDNSlocal void CALLBACK FreeInterface( mDNSInterfaceData *inIFD ) |
| { |
| free( inIFD ); |
| } |
| |
| //=========================================================================================================================== |
| // SetupSocket |
| //=========================================================================================================================== |
| |
| mDNSlocal mStatus SetupSocket( mDNS * const inMDNS, const struct sockaddr *inAddr, mDNSIPPort port, SocketRef *outSocketRef ) |
| { |
| mStatus err; |
| SocketRef sock; |
| int option; |
| DWORD bytesReturned = 0; |
| BOOL behavior = FALSE; |
| |
| DEBUG_UNUSED( inMDNS ); |
| |
| dlog( kDebugLevelTrace, DEBUG_NAME "setting up socket %##a\n", inAddr ); |
| check( inMDNS ); |
| check( outSocketRef ); |
| |
| // Set up an IPv4 or IPv6 UDP socket. |
| |
| sock = socket( inAddr->sa_family, SOCK_DGRAM, IPPROTO_UDP ); |
| err = translate_errno( IsValidSocket( sock ), errno_compat(), kUnknownErr ); |
| require_noerr( err, exit ); |
| |
| // Turn on reuse address option so multiple servers can listen for Multicast DNS packets, |
| // if we're creating a multicast socket |
| |
| if ( port.NotAnInteger ) |
| { |
| option = 1; |
| err = setsockopt( sock, SOL_SOCKET, SO_REUSEADDR, (char *) &option, sizeof( option ) ); |
| check_translated_errno( err == 0, errno_compat(), kOptionErr ); |
| } |
| |
| // <rdar://problem/7894393> Bonjour for Windows broken on Windows XP |
| // |
| // Not sure why, but the default behavior for sockets is to behave incorrectly |
| // when using them in Overlapped I/O mode on XP. According to MSDN: |
| // |
| // SIO_UDP_CONNRESET (opcode setting: I, T==3) |
| // Windows XP: Controls whether UDP PORT_UNREACHABLE messages are reported. Set to TRUE to enable reporting. |
| // Set to FALSE to disable reporting. |
| // |
| // Packet traces from misbehaving Bonjour installations showed that ICMP port unreachable |
| // messages were being sent to us after we sent out packets to a multicast address. This is clearly |
| // incorrect behavior, but should be harmless. However, after receiving a port unreachable error, WinSock |
| // will no longer receive any packets from that socket, which is not harmless. This behavior is only |
| // seen on XP. |
| // |
| // So we turn off port unreachable reporting to make sure our sockets that are reading |
| // multicast packets function correctly under all circumstances. |
| |
| err = WSAIoctl( sock, SIO_UDP_CONNRESET, &behavior, sizeof(behavior), NULL, 0, &bytesReturned, NULL, NULL ); |
| check_translated_errno( err == 0, errno_compat(), kOptionErr ); |
| |
| if( inAddr->sa_family == AF_INET ) |
| { |
| mDNSv4Addr ipv4; |
| struct sockaddr_in sa4; |
| struct ip_mreq mreqv4; |
| |
| // Bind the socket to the desired port |
| |
| ipv4.NotAnInteger = ( (const struct sockaddr_in *) inAddr )->sin_addr.s_addr; |
| mDNSPlatformMemZero( &sa4, sizeof( sa4 ) ); |
| sa4.sin_family = AF_INET; |
| sa4.sin_port = port.NotAnInteger; |
| sa4.sin_addr.s_addr = ipv4.NotAnInteger; |
| |
| err = bind( sock, (struct sockaddr *) &sa4, sizeof( sa4 ) ); |
| check_translated_errno( err == 0, errno_compat(), kUnknownErr ); |
| |
| // Turn on option to receive destination addresses and receiving interface. |
| |
| option = 1; |
| err = setsockopt( sock, IPPROTO_IP, IP_PKTINFO, (char *) &option, sizeof( option ) ); |
| check_translated_errno( err == 0, errno_compat(), kOptionErr ); |
| |
| if (port.NotAnInteger) |
| { |
| // Join the all-DNS multicast group so we receive Multicast DNS packets |
| |
| mreqv4.imr_multiaddr.s_addr = AllDNSLinkGroup_v4.ip.v4.NotAnInteger; |
| mreqv4.imr_interface.s_addr = ipv4.NotAnInteger; |
| err = setsockopt( sock, IPPROTO_IP, IP_ADD_MEMBERSHIP, (char *) &mreqv4, sizeof( mreqv4 ) ); |
| check_translated_errno( err == 0, errno_compat(), kOptionErr ); |
| |
| // Specify the interface to send multicast packets on this socket. |
| |
| sa4.sin_addr.s_addr = ipv4.NotAnInteger; |
| err = setsockopt( sock, IPPROTO_IP, IP_MULTICAST_IF, (char *) &sa4.sin_addr, sizeof( sa4.sin_addr ) ); |
| check_translated_errno( err == 0, errno_compat(), kOptionErr ); |
| |
| // Enable multicast loopback so we receive multicast packets we send (for same-machine operations). |
| |
| option = 1; |
| err = setsockopt( sock, IPPROTO_IP, IP_MULTICAST_LOOP, (char *) &option, sizeof( option ) ); |
| check_translated_errno( err == 0, errno_compat(), kOptionErr ); |
| } |
| |
| // Send unicast packets with TTL 255 (helps against spoofing). |
| |
| option = 255; |
| err = setsockopt( sock, IPPROTO_IP, IP_TTL, (char *) &option, sizeof( option ) ); |
| check_translated_errno( err == 0, errno_compat(), kOptionErr ); |
| |
| // Send multicast packets with TTL 255 (helps against spoofing). |
| |
| option = 255; |
| err = setsockopt( sock, IPPROTO_IP, IP_MULTICAST_TTL, (char *) &option, sizeof( option ) ); |
| check_translated_errno( err == 0, errno_compat(), kOptionErr ); |
| |
| } |
| else if( inAddr->sa_family == AF_INET6 ) |
| { |
| struct sockaddr_in6 * sa6p; |
| struct sockaddr_in6 sa6; |
| struct ipv6_mreq mreqv6; |
| |
| sa6p = (struct sockaddr_in6 *) inAddr; |
| |
| // Bind the socket to the desired port |
| |
| mDNSPlatformMemZero( &sa6, sizeof( sa6 ) ); |
| sa6.sin6_family = AF_INET6; |
| sa6.sin6_port = port.NotAnInteger; |
| sa6.sin6_flowinfo = 0; |
| sa6.sin6_addr = sa6p->sin6_addr; |
| sa6.sin6_scope_id = sa6p->sin6_scope_id; |
| |
| err = bind( sock, (struct sockaddr *) &sa6, sizeof( sa6 ) ); |
| check_translated_errno( err == 0, errno_compat(), kUnknownErr ); |
| |
| // Turn on option to receive destination addresses and receiving interface. |
| |
| option = 1; |
| err = setsockopt( sock, IPPROTO_IPV6, IPV6_PKTINFO, (char *) &option, sizeof( option ) ); |
| check_translated_errno( err == 0, errno_compat(), kOptionErr ); |
| |
| // We only want to receive IPv6 packets (not IPv4-mapped IPv6 addresses) because we have a separate socket |
| // for IPv4, but the IPv6 stack in Windows currently doesn't support IPv4-mapped IPv6 addresses and doesn't |
| // support the IPV6_V6ONLY socket option so the following code would typically not be executed (or needed). |
| |
| #if( defined( IPV6_V6ONLY ) ) |
| option = 1; |
| err = setsockopt( sock, IPPROTO_IPV6, IPV6_V6ONLY, (char *) &option, sizeof( option ) ); |
| check_translated_errno( err == 0, errno_compat(), kOptionErr ); |
| #endif |
| |
| if ( port.NotAnInteger ) |
| { |
| // Join the all-DNS multicast group so we receive Multicast DNS packets. |
| |
| mreqv6.ipv6mr_multiaddr = *( (struct in6_addr *) &AllDNSLinkGroup_v6.ip.v6 ); |
| mreqv6.ipv6mr_interface = sa6p->sin6_scope_id; |
| err = setsockopt( sock, IPPROTO_IPV6, IPV6_JOIN_GROUP, (char *) &mreqv6, sizeof( mreqv6 ) ); |
| check_translated_errno( err == 0, errno_compat(), kOptionErr ); |
| |
| // Specify the interface to send multicast packets on this socket. |
| |
| option = (int) sa6p->sin6_scope_id; |
| err = setsockopt( sock, IPPROTO_IPV6, IPV6_MULTICAST_IF, (char *) &option, sizeof( option ) ); |
| check_translated_errno( err == 0, errno_compat(), kOptionErr ); |
| |
| // Enable multicast loopback so we receive multicast packets we send (for same-machine operations). |
| |
| option = 1; |
| err = setsockopt( sock, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, (char *) &option, sizeof( option ) ); |
| check_translated_errno( err == 0, errno_compat(), kOptionErr ); |
| } |
| |
| // Send unicast packets with TTL 255 (helps against spoofing). |
| |
| option = 255; |
| err = setsockopt( sock, IPPROTO_IPV6, IPV6_UNICAST_HOPS, (char *) &option, sizeof( option ) ); |
| check_translated_errno( err == 0, errno_compat(), kOptionErr ); |
| |
| // Send multicast packets with TTL 255 (helps against spoofing). |
| |
| option = 255; |
| err = setsockopt( sock, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, (char *) &option, sizeof( option ) ); |
| check_translated_errno( err == 0, errno_compat(), kOptionErr ); |
| } |
| else |
| { |
| dlog( kDebugLevelError, DEBUG_NAME "%s: unsupport socket family (%d)\n", __ROUTINE__, inAddr->sa_family ); |
| err = kUnsupportedErr; |
| goto exit; |
| } |
| |
| // Success! |
| |
| *outSocketRef = sock; |
| sock = kInvalidSocketRef; |
| err = mStatus_NoError; |
| |
| exit: |
| if( IsValidSocket( sock ) ) |
| { |
| close_compat( sock ); |
| } |
| return( err ); |
| } |
| |
| //=========================================================================================================================== |
| // SetupSocket |
| //=========================================================================================================================== |
| |
| mDNSlocal mStatus SockAddrToMDNSAddr( const struct sockaddr * const inSA, mDNSAddr *outIP, mDNSIPPort *outPort ) |
| { |
| mStatus err; |
| |
| check( inSA ); |
| check( outIP ); |
| |
| if( inSA->sa_family == AF_INET ) |
| { |
| struct sockaddr_in * sa4; |
| |
| sa4 = (struct sockaddr_in *) inSA; |
| outIP->type = mDNSAddrType_IPv4; |
| outIP->ip.v4.NotAnInteger = sa4->sin_addr.s_addr; |
| if( outPort ) |
| { |
| outPort->NotAnInteger = sa4->sin_port; |
| } |
| err = mStatus_NoError; |
| } |
| else if( inSA->sa_family == AF_INET6 ) |
| { |
| struct sockaddr_in6 * sa6; |
| |
| sa6 = (struct sockaddr_in6 *) inSA; |
| outIP->type = mDNSAddrType_IPv6; |
| outIP->ip.v6 = *( (mDNSv6Addr *) &sa6->sin6_addr ); |
| if( IN6_IS_ADDR_LINKLOCAL( &sa6->sin6_addr ) ) |
| { |
| outIP->ip.v6.w[ 1 ] = 0; |
| } |
| if( outPort ) |
| { |
| outPort->NotAnInteger = sa6->sin6_port; |
| } |
| err = mStatus_NoError; |
| } |
| else |
| { |
| dlog( kDebugLevelError, DEBUG_NAME "%s: invalid sa_family %d", __ROUTINE__, inSA->sa_family ); |
| err = mStatus_BadParamErr; |
| } |
| return( err ); |
| } |
| |
| |
| #if 0 |
| #pragma mark - |
| #endif |
| |
| //=========================================================================================================================== |
| // UDPBeginRecv |
| //=========================================================================================================================== |
| |
| mDNSlocal OSStatus UDPBeginRecv( UDPSocket * sock ) |
| { |
| DWORD size; |
| DWORD numTries; |
| mStatus err; |
| |
| dlog( kDebugLevelChatty, DEBUG_NAME "%s: sock = %d\n", __ROUTINE__, sock->fd ); |
| |
| require_action( sock != NULL, exit, err = mStatus_BadStateErr ); |
| check( !sock->overlapped.pending ); |
| |
| // Initialize the buffer structure |
| |
| sock->overlapped.wbuf.buf = (char *) &sock->packet; |
| sock->overlapped.wbuf.len = (u_long) sizeof( sock->packet ); |
| sock->srcAddrLen = sizeof( sock->srcAddr ); |
| |
| // Initialize the overlapped structure |
| |
| ZeroMemory( &sock->overlapped.data, sizeof( OVERLAPPED ) ); |
| sock->overlapped.data.hEvent = sock; |
| |
| numTries = 0; |
| |
| do |
| { |
| if ( sock->recvMsgPtr ) |
| { |
| sock->wmsg.name = ( LPSOCKADDR ) &sock->srcAddr; |
| sock->wmsg.namelen = sock->srcAddrLen; |
| sock->wmsg.lpBuffers = &sock->overlapped.wbuf; |
| sock->wmsg.dwBufferCount = 1; |
| sock->wmsg.Control.buf = ( CHAR* ) sock->controlBuffer; |
| sock->wmsg.Control.len = sizeof( sock->controlBuffer ); |
| sock->wmsg.dwFlags = 0; |
| |
| err = sock->recvMsgPtr( sock->fd, &sock->wmsg, &size, &sock->overlapped.data, ( LPWSAOVERLAPPED_COMPLETION_ROUTINE ) UDPEndRecv ); |
| err = translate_errno( ( err == 0 ) || ( WSAGetLastError() == WSA_IO_PENDING ), (OSStatus) WSAGetLastError(), kUnknownErr ); |
| |
| // <rdar://problem/7824093> iTunes 9.1 fails to install with Bonjour service on Windows 7 Ultimate |
| // |
| // There seems to be a bug in some network device drivers that involves calling WSARecvMsg() in |
| // overlapped i/o mode. Although all the parameters to WSARecvMsg() are correct, it returns a |
| // WSAEFAULT error code when there is no actual error. We have found experientially that falling |
| // back to using WSARecvFrom() when this happens will work correctly. |
| |
| if ( err == WSAEFAULT ) sock->recvMsgPtr = NULL; |
| } |
| else |
| { |
| DWORD flags = 0; |
| |
| err = WSARecvFrom( sock->fd, &sock->overlapped.wbuf, 1, NULL, &flags, ( LPSOCKADDR ) &sock->srcAddr, &sock->srcAddrLen, &sock->overlapped.data, ( LPWSAOVERLAPPED_COMPLETION_ROUTINE ) UDPEndRecv ); |
| err = translate_errno( ( err == 0 ) || ( WSAGetLastError() == WSA_IO_PENDING ), ( OSStatus ) WSAGetLastError(), kUnknownErr ); |
| } |
| |
| // According to MSDN <http://msdn.microsoft.com/en-us/library/ms741687(VS.85).aspx>: |
| // |
| // "WSAECONNRESET: For a UDP datagram socket, this error would indicate that a previous |
| // send operation resulted in an ICMP "Port Unreachable" message." |
| // |
| // Because this is the case, we want to ignore this error and try again. Just in case |
| // this is some kind of pathological condition, we'll break out of the retry loop |
| // after 100 iterations |
| |
| require_action( !err || ( err == WSAECONNRESET ) || ( err == WSAEFAULT ), exit, err = WSAGetLastError() ); |
| } |
| while ( ( ( err == WSAECONNRESET ) || ( err == WSAEFAULT ) ) && ( numTries++ < 100 ) ); |
| |
| sock->overlapped.pending = TRUE; |
| |
| exit: |
| |
| if ( err ) |
| { |
| LogMsg( "WSARecvMsg failed (%d)\n", err ); |
| } |
| |
| return err; |
| } |
| |
| |
| //=========================================================================================================================== |
| // UDPEndRecv |
| //=========================================================================================================================== |
| |
| mDNSlocal void CALLBACK UDPEndRecv( DWORD err, DWORD bytesTransferred, LPWSAOVERLAPPED overlapped, DWORD flags ) |
| { |
| UDPSocket * sock = NULL; |
| |
| ( void ) flags; |
| |
| dlog( kDebugLevelChatty, DEBUG_NAME "%s: err = %d, bytesTransferred = %d\n", __ROUTINE__, err, bytesTransferred ); |
| require_action_quiet( err != WSA_OPERATION_ABORTED, exit, err = ( DWORD ) kUnknownErr ); |
| require_noerr( err, exit ); |
| sock = ( overlapped != NULL ) ? overlapped->hEvent : NULL; |
| require_action( sock != NULL, exit, err = ( DWORD ) kUnknownErr ); |
| dlog( kDebugLevelChatty, DEBUG_NAME "%s: sock = %d\n", __ROUTINE__, sock->fd ); |
| sock->overlapped.error = err; |
| sock->overlapped.bytesTransferred = bytesTransferred; |
| check( sock->overlapped.pending ); |
| sock->overlapped.pending = FALSE; |
| |
| // Translate the source of this packet into mDNS data types |
| |
| SockAddrToMDNSAddr( (struct sockaddr *) &sock->srcAddr, &sock->overlapped.srcAddr, &sock->overlapped.srcPort ); |
| |
| // Initialize the destination of this packet. Just in case |
| // we can't determine this info because we couldn't call |
| // WSARecvMsg (recvMsgPtr) |
| |
| sock->overlapped.dstAddr = sock->addr; |
| sock->overlapped.dstPort = sock->port; |
| |
| if ( sock->recvMsgPtr ) |
| { |
| LPWSACMSGHDR header; |
| LPWSACMSGHDR last = NULL; |
| int count = 0; |
| |
| // Parse the control information. Reject packets received on the wrong interface. |
| |
| // <rdar://problem/7832196> INSTALL: Bonjour 2.0 on Windows can not start / stop |
| // |
| // There seems to be an interaction between Bullguard and this next bit of code. |
| // When a user's machine is running Bullguard, the control information that is |
| // returned is corrupted, and the code would go into an infinite loop. We'll add |
| // two bits of defensive coding here. The first will check that each pointer to |
| // the LPWSACMSGHDR that is returned in the for loop is different than the last. |
| // This fixes the problem with Bullguard. The second will break out of this loop |
| // after 100 iterations, just in case the corruption isn't caught by the first |
| // check. |
| |
| for ( header = WSA_CMSG_FIRSTHDR( &sock->wmsg ); header; header = WSA_CMSG_NXTHDR( &sock->wmsg, header ) ) |
| { |
| if ( ( header != last ) && ( ++count < 100 ) ) |
| { |
| last = header; |
| |
| if ( ( header->cmsg_level == IPPROTO_IP ) && ( header->cmsg_type == IP_PKTINFO ) ) |
| { |
| IN_PKTINFO * ipv4PacketInfo; |
| |
| ipv4PacketInfo = (IN_PKTINFO *) WSA_CMSG_DATA( header ); |
| |
| if ( sock->ifd != NULL ) |
| { |
| require_action( ipv4PacketInfo->ipi_ifindex == sock->ifd->index, exit, err = ( DWORD ) kMismatchErr ); |
| } |
| |
| sock->overlapped.dstAddr.type = mDNSAddrType_IPv4; |
| sock->overlapped.dstAddr.ip.v4.NotAnInteger = ipv4PacketInfo->ipi_addr.s_addr; |
| } |
| else if( ( header->cmsg_level == IPPROTO_IPV6 ) && ( header->cmsg_type == IPV6_PKTINFO ) ) |
| { |
| IN6_PKTINFO * ipv6PacketInfo; |
| |
| ipv6PacketInfo = (IN6_PKTINFO *) WSA_CMSG_DATA( header ); |
| |
| if ( sock->ifd != NULL ) |
| { |
| require_action( ipv6PacketInfo->ipi6_ifindex == ( sock->ifd->index - kIPv6IfIndexBase ), exit, err = ( DWORD ) kMismatchErr ); |
| } |
| |
| sock->overlapped.dstAddr.type = mDNSAddrType_IPv6; |
| sock->overlapped.dstAddr.ip.v6 = *( (mDNSv6Addr *) &ipv6PacketInfo->ipi6_addr ); |
| } |
| } |
| else |
| { |
| static BOOL loggedMessage = FALSE; |
| |
| if ( !loggedMessage ) |
| { |
| LogMsg( "UDPEndRecv: WSARecvMsg control information error." ); |
| loggedMessage = TRUE; |
| } |
| |
| break; |
| } |
| } |
| } |
| |
| dlog( kDebugLevelChatty, DEBUG_NAME "packet received\n" ); |
| dlog( kDebugLevelChatty, DEBUG_NAME " size = %d\n", bytesTransferred ); |
| dlog( kDebugLevelChatty, DEBUG_NAME " src = %#a:%u\n", &sock->overlapped.srcAddr, ntohs( sock->overlapped.srcPort.NotAnInteger ) ); |
| dlog( kDebugLevelChatty, DEBUG_NAME " dst = %#a:%u\n", &sock->overlapped.dstAddr, ntohs( sock->overlapped.dstPort.NotAnInteger ) ); |
| |
| if ( sock->ifd != NULL ) |
| { |
| dlog( kDebugLevelChatty, DEBUG_NAME " interface = %#a (index=0x%08X)\n", &sock->ifd->interfaceInfo.ip, sock->ifd->index ); |
| } |
| |
| dlog( kDebugLevelChatty, DEBUG_NAME "\n" ); |
| |
| // Queue this socket |
| |
| AddToTail( &gUDPDispatchableSockets, sock ); |
| |
| exit: |
| |
| return; |
| } |
| |
| |
| //=========================================================================================================================== |
| // InterfaceListDidChange |
| //=========================================================================================================================== |
| void InterfaceListDidChange( mDNS * const inMDNS ) |
| { |
| mStatus err; |
| |
| dlog( kDebugLevelInfo, DEBUG_NAME "interface list changed\n" ); |
| check( inMDNS ); |
| |
| // Tear down the existing interfaces and set up new ones using the new IP info. |
| |
| err = TearDownInterfaceList( inMDNS ); |
| check_noerr( err ); |
| |
| err = SetupInterfaceList( inMDNS ); |
| check_noerr( err ); |
| |
| err = uDNS_SetupDNSConfig( inMDNS ); |
| check_noerr( err ); |
| |
| // Inform clients of the change. |
| |
| mDNS_ConfigChanged(inMDNS); |
| |
| // Force mDNS to update. |
| |
| mDNSCoreMachineSleep( inMDNS, mDNSfalse ); // What is this for? Mac OS X does not do this |
| } |
| |
| |
| //=========================================================================================================================== |
| // ComputerDescriptionDidChange |
| //=========================================================================================================================== |
| void ComputerDescriptionDidChange( mDNS * const inMDNS ) |
| { |
| dlog( kDebugLevelInfo, DEBUG_NAME "computer description has changed\n" ); |
| check( inMDNS ); |
| |
| // redo the names |
| SetupNiceName( inMDNS ); |
| } |
| |
| |
| //=========================================================================================================================== |
| // TCPIPConfigDidChange |
| //=========================================================================================================================== |
| void TCPIPConfigDidChange( mDNS * const inMDNS ) |
| { |
| mStatus err; |
| |
| dlog( kDebugLevelInfo, DEBUG_NAME "TCP/IP config has changed\n" ); |
| check( inMDNS ); |
| |
| err = uDNS_SetupDNSConfig( inMDNS ); |
| check_noerr( err ); |
| } |
| |
| |
| //=========================================================================================================================== |
| // DynDNSConfigDidChange |
| //=========================================================================================================================== |
| void DynDNSConfigDidChange( mDNS * const inMDNS ) |
| { |
| mStatus err; |
| |
| dlog( kDebugLevelInfo, DEBUG_NAME "DynDNS config has changed\n" ); |
| check( inMDNS ); |
| |
| SetDomainSecrets( inMDNS ); |
| |
| err = uDNS_SetupDNSConfig( inMDNS ); |
| check_noerr( err ); |
| } |
| |
| |
| //=========================================================================================================================== |
| // FileSharingDidChange |
| //=========================================================================================================================== |
| void FileSharingDidChange( mDNS * const inMDNS ) |
| { |
| dlog( kDebugLevelInfo, DEBUG_NAME "File shares has changed\n" ); |
| check( inMDNS ); |
| |
| CheckFileShares( inMDNS ); |
| } |
| |
| |
| //=========================================================================================================================== |
| // FilewallDidChange |
| //=========================================================================================================================== |
| void FirewallDidChange( mDNS * const inMDNS ) |
| { |
| dlog( kDebugLevelInfo, DEBUG_NAME "Firewall has changed\n" ); |
| check( inMDNS ); |
| |
| CheckFileShares( inMDNS ); |
| } |
| |
| |
| #if 0 |
| #pragma mark - |
| #pragma mark == Utilities == |
| #endif |
| |
| //=========================================================================================================================== |
| // getifaddrs |
| //=========================================================================================================================== |
| |
| mDNSlocal int getifaddrs( struct ifaddrs **outAddrs ) |
| { |
| int err; |
| |
| #if( MDNS_WINDOWS_USE_IPV6_IF_ADDRS ) |
| |
| // Try to the load the GetAdaptersAddresses function from the IP Helpers DLL. This API is only available on Windows |
| // XP or later. Looking up the symbol at runtime allows the code to still work on older systems without that API. |
| |
| if( !gIPHelperLibraryInstance ) |
| { |
| gIPHelperLibraryInstance = LoadLibrary( TEXT( "Iphlpapi" ) ); |
| if( gIPHelperLibraryInstance ) |
| { |
| gGetAdaptersAddressesFunctionPtr = |
| (GetAdaptersAddressesFunctionPtr) GetProcAddress( gIPHelperLibraryInstance, "GetAdaptersAddresses" ); |
| if( !gGetAdaptersAddressesFunctionPtr ) |
| { |
| BOOL ok; |
| |
| ok = FreeLibrary( gIPHelperLibraryInstance ); |
| check_translated_errno( ok, GetLastError(), kUnknownErr ); |
| gIPHelperLibraryInstance = NULL; |
| } |
| } |
| } |
| |
| // Use the new IPv6-capable routine if supported. Otherwise, fall back to the old and compatible IPv4-only code. |
| // <rdar://problem/4278934> Fall back to using getifaddrs_ipv4 if getifaddrs_ipv6 fails |
| // <rdar://problem/6145913> Fall back to using getifaddrs_ipv4 if getifaddrs_ipv6 returns no addrs |
| |
| if( !gGetAdaptersAddressesFunctionPtr || ( ( ( err = getifaddrs_ipv6( outAddrs ) ) != mStatus_NoError ) || ( ( outAddrs != NULL ) && ( *outAddrs == NULL ) ) ) ) |
| { |
| err = getifaddrs_ipv4( outAddrs ); |
| require_noerr( err, exit ); |
| } |
| |
| #else |
| |
| err = getifaddrs_ipv4( outAddrs ); |
| require_noerr( err, exit ); |
| |
| #endif |
| |
| exit: |
| return( err ); |
| } |
| |
| #if( MDNS_WINDOWS_USE_IPV6_IF_ADDRS ) |
| //=========================================================================================================================== |
| // getifaddrs_ipv6 |
| //=========================================================================================================================== |
| |
| mDNSlocal int getifaddrs_ipv6( struct ifaddrs **outAddrs ) |
| { |
| DWORD err; |
| int i; |
| DWORD flags; |
| struct ifaddrs * head; |
| struct ifaddrs ** next; |
| IP_ADAPTER_ADDRESSES * iaaList; |
| ULONG iaaListSize; |
| IP_ADAPTER_ADDRESSES * iaa; |
| size_t size; |
| struct ifaddrs * ifa; |
| |
| check( gGetAdaptersAddressesFunctionPtr ); |
| |
| head = NULL; |
| next = &head; |
| iaaList = NULL; |
| |
| // Get the list of interfaces. The first call gets the size and the second call gets the actual data. |
| // This loops to handle the case where the interface changes in the window after getting the size, but before the |
| // second call completes. A limit of 100 retries is enforced to prevent infinite loops if something else is wrong. |
| |
| flags = GAA_FLAG_INCLUDE_PREFIX | GAA_FLAG_SKIP_ANYCAST | GAA_FLAG_SKIP_MULTICAST | GAA_FLAG_SKIP_DNS_SERVER | GAA_FLAG_SKIP_FRIENDLY_NAME; |
| i = 0; |
| for( ;; ) |
| { |
| iaaListSize = 0; |
| err = gGetAdaptersAddressesFunctionPtr( AF_UNSPEC, flags, NULL, NULL, &iaaListSize ); |
| check( err == ERROR_BUFFER_OVERFLOW ); |
| check( iaaListSize >= sizeof( IP_ADAPTER_ADDRESSES ) ); |
| |
| iaaList = (IP_ADAPTER_ADDRESSES *) malloc( iaaListSize ); |
| require_action( iaaList, exit, err = ERROR_NOT_ENOUGH_MEMORY ); |
| |
| err = gGetAdaptersAddressesFunctionPtr( AF_UNSPEC, flags, NULL, iaaList, &iaaListSize ); |
| if( err == ERROR_SUCCESS ) break; |
| |
| free( iaaList ); |
| iaaList = NULL; |
| ++i; |
| require( i < 100, exit ); |
| dlog( kDebugLevelWarning, "%s: retrying GetAdaptersAddresses after %d failure(s) (%d %m)\n", __ROUTINE__, i, err, err ); |
| } |
| |
| for( iaa = iaaList; iaa; iaa = iaa->Next ) |
| { |
| int addrIndex; |
| IP_ADAPTER_UNICAST_ADDRESS * addr; |
| DWORD ipv6IfIndex; |
| IP_ADAPTER_PREFIX * firstPrefix; |
| |
| if( iaa->IfIndex > 0xFFFFFF ) |
| { |
| dlog( kDebugLevelAlert, DEBUG_NAME "%s: IPv4 ifindex out-of-range (0x%08X)\n", __ROUTINE__, iaa->IfIndex ); |
| } |
| if( iaa->Ipv6IfIndex > 0xFF ) |
| { |
| dlog( kDebugLevelAlert, DEBUG_NAME "%s: IPv6 ifindex out-of-range (0x%08X)\n", __ROUTINE__, iaa->Ipv6IfIndex ); |
| } |
| |
| // For IPv4 interfaces, there seems to be a bug in iphlpapi.dll that causes the |
| // following code to crash when iterating through the prefix list. This seems |
| // to occur when iaa->Ipv6IfIndex != 0 when IPv6 is not installed on the host. |
| // This shouldn't happen according to Microsoft docs which states: |
| // |
| // "Ipv6IfIndex contains 0 if IPv6 is not available on the interface." |
| // |
| // So the data structure seems to be corrupted when we return from |
| // GetAdaptersAddresses(). The bug seems to occur when iaa->Length < |
| // sizeof(IP_ADAPTER_ADDRESSES), so when that happens, we'll manually |
| // modify iaa to have the correct values. |
| |
| if ( iaa->Length >= sizeof( IP_ADAPTER_ADDRESSES ) ) |
| { |
| ipv6IfIndex = iaa->Ipv6IfIndex; |
| firstPrefix = iaa->FirstPrefix; |
| } |
| else |
| { |
| ipv6IfIndex = 0; |
| firstPrefix = NULL; |
| } |
| |
| // Skip pseudo and tunnel interfaces. |
| |
| if( ( ( ipv6IfIndex == 1 ) && ( iaa->IfType != IF_TYPE_SOFTWARE_LOOPBACK ) ) || ( iaa->IfType == IF_TYPE_TUNNEL ) ) |
| { |
| continue; |
| } |
| |
| // Add each address as a separate interface to emulate the way getifaddrs works. |
| |
| for( addrIndex = 0, addr = iaa->FirstUnicastAddress; addr; ++addrIndex, addr = addr->Next ) |
| { |
| int family; |
| int prefixIndex; |
| IP_ADAPTER_PREFIX * prefix; |
| ULONG prefixLength; |
| uint32_t ipv4Index; |
| struct sockaddr_in ipv4Netmask; |
| |
| family = addr->Address.lpSockaddr->sa_family; |
| if( ( family != AF_INET ) && ( family != AF_INET6 ) ) continue; |
| |
| // <rdar://problem/6220642> iTunes 8: Bonjour doesn't work after upgrading iTunes 8 |
| // Seems as if the problem here is a buggy implementation of some network interface |
| // driver. It is reporting that is has a link-local address when it is actually |
| // disconnected. This was causing a problem in AddressToIndexAndMask. |
| // The solution is to call AddressToIndexAndMask first, and if unable to lookup |
| // the address, to ignore that address. |
| |
| ipv4Index = 0; |
| memset( &ipv4Netmask, 0, sizeof( ipv4Netmask ) ); |
| |
| if ( family == AF_INET ) |
| { |
| err = AddressToIndexAndMask( addr->Address.lpSockaddr, &ipv4Index, ( struct sockaddr* ) &ipv4Netmask ); |
| |
| if ( err ) |
| { |
| err = 0; |
| continue; |
| } |
| } |
| |
| ifa = (struct ifaddrs *) calloc( 1, sizeof( struct ifaddrs ) ); |
| require_action( ifa, exit, err = WSAENOBUFS ); |
| |
| *next = ifa; |
| next = &ifa->ifa_next; |
| |
| // Get the name. |
| |
| size = strlen( iaa->AdapterName ) + 1; |
| ifa->ifa_name = (char *) malloc( size ); |
| require_action( ifa->ifa_name, exit, err = WSAENOBUFS ); |
| memcpy( ifa->ifa_name, iaa->AdapterName, size ); |
| |
| // Get interface flags. |
| |
| ifa->ifa_flags = 0; |
| if( iaa->OperStatus == IfOperStatusUp ) ifa->ifa_flags |= IFF_UP; |
| if( iaa->IfType == IF_TYPE_SOFTWARE_LOOPBACK ) ifa->ifa_flags |= IFF_LOOPBACK; |
| else if ( IsPointToPoint( addr ) ) ifa->ifa_flags |= IFF_POINTTOPOINT; |
| if( !( iaa->Flags & IP_ADAPTER_NO_MULTICAST ) ) ifa->ifa_flags |= IFF_MULTICAST; |
| |
| |
| // <rdar://problem/4045657> Interface index being returned is 512 |
| // |
| // Windows does not have a uniform scheme for IPv4 and IPv6 interface indexes. |
| // This code used to shift the IPv4 index up to ensure uniqueness between |
| // it and IPv6 indexes. Although this worked, it was somewhat confusing to developers, who |
| // then see interface indexes passed back that don't correspond to anything |
| // that is seen in Win32 APIs or command line tools like "route". As a relatively |
| // small percentage of developers are actively using IPv6, it seems to |
| // make sense to make our use of IPv4 as confusion free as possible. |
| // So now, IPv6 interface indexes will be shifted up by a |
| // constant value which will serve to uniquely identify them, and we will |
| // leave IPv4 interface indexes unmodified. |
| |
| switch( family ) |
| { |
| case AF_INET: ifa->ifa_extra.index = iaa->IfIndex; break; |
| case AF_INET6: ifa->ifa_extra.index = ipv6IfIndex + kIPv6IfIndexBase; break; |
| default: break; |
| } |
| |
| // Get lease lifetime |
| |
| if ( ( iaa->IfType != IF_TYPE_SOFTWARE_LOOPBACK ) && ( addr->LeaseLifetime != 0 ) && ( addr->ValidLifetime != 0xFFFFFFFF ) ) |
| { |
| ifa->ifa_dhcpEnabled = TRUE; |
| ifa->ifa_dhcpLeaseExpires = time( NULL ) + addr->ValidLifetime; |
| } |
| else |
| { |
| ifa->ifa_dhcpEnabled = FALSE; |
| ifa->ifa_dhcpLeaseExpires = 0; |
| } |
| |
| if ( iaa->PhysicalAddressLength == sizeof( ifa->ifa_physaddr ) ) |
| { |
| memcpy( ifa->ifa_physaddr, iaa->PhysicalAddress, iaa->PhysicalAddressLength ); |
| } |
| |
| // Because we don't get notified of womp changes, we're going to just assume |
| // that all wired interfaces have it enabled. Before we go to sleep, we'll check |
| // if the interface actually supports it, and update mDNS->SystemWakeOnLANEnabled |
| // accordingly |
| |
| ifa->ifa_womp = ( iaa->IfType == IF_TYPE_ETHERNET_CSMACD ) ? mDNStrue : mDNSfalse; |
| |
| // Get address. |
| |
| switch( family ) |
| { |
| case AF_INET: |
| case AF_INET6: |
| ifa->ifa_addr = (struct sockaddr *) calloc( 1, (size_t) addr->Address.iSockaddrLength ); |
| require_action( ifa->ifa_addr, exit, err = WSAENOBUFS ); |
| memcpy( ifa->ifa_addr, addr->Address.lpSockaddr, (size_t) addr->Address.iSockaddrLength ); |
| break; |
| |
| default: |
| break; |
| } |
| check( ifa->ifa_addr ); |
| |
| // Get subnet mask (IPv4)/link prefix (IPv6). It is specified as a bit length (e.g. 24 for 255.255.255.0). |
| |
| prefixLength = 0; |
| for( prefixIndex = 0, prefix = firstPrefix; prefix; ++prefixIndex, prefix = prefix->Next ) |
| { |
| if( ( prefix->Address.lpSockaddr->sa_family == family ) && ( prefixIndex == addrIndex ) ) |
| { |
| check_string( prefix->Address.lpSockaddr->sa_family == family, "addr family != netmask family" ); |
| prefixLength = prefix->PrefixLength; |
| break; |
| } |
| } |
| switch( family ) |
| { |
| case AF_INET: |
| { |
| struct sockaddr_in * sa4; |
| |
| sa4 = (struct sockaddr_in *) calloc( 1, sizeof( *sa4 ) ); |
| require_action( sa4, exit, err = WSAENOBUFS ); |
| sa4->sin_family = AF_INET; |
| sa4->sin_addr.s_addr = ipv4Netmask.sin_addr.s_addr; |
| |
| dlog( kDebugLevelInfo, DEBUG_NAME "%s: IPv4 mask = %s\n", __ROUTINE__, inet_ntoa( sa4->sin_addr ) ); |
| ifa->ifa_netmask = (struct sockaddr *) sa4; |
| break; |
| } |
| |
| case AF_INET6: |
| { |
| struct sockaddr_in6 * sa6; |
| int len; |
| int maskIndex; |
| uint8_t maskByte; |
| |
| require_action( prefixLength <= 128, exit, err = ERROR_INVALID_DATA ); |
| |
| sa6 = (struct sockaddr_in6 *) calloc( 1, sizeof( *sa6 ) ); |
| require_action( sa6, exit, err = WSAENOBUFS ); |
| sa6->sin6_family = AF_INET6; |
| |
| if( prefixLength == 0 ) |
| { |
| dlog( kDebugLevelWarning, DEBUG_NAME "%s: IPv6 link prefix 0, defaulting to /128\n", __ROUTINE__ ); |
| prefixLength = 128; |
| } |
| maskIndex = 0; |
| for( len = (int) prefixLength; len > 0; len -= 8 ) |
| { |
| if( len >= 8 ) maskByte = 0xFF; |
| else maskByte = (uint8_t)( ( 0xFFU << ( 8 - len ) ) & 0xFFU ); |
| sa6->sin6_addr.s6_addr[ maskIndex++ ] = maskByte; |
| } |
| ifa->ifa_netmask = (struct sockaddr *) sa6; |
| break; |
| } |
| |
| default: |
| break; |
| } |
| } |
| } |
| |
| // Success! |
| |
| if( outAddrs ) |
| { |
| *outAddrs = head; |
| head = NULL; |
| } |
| err = ERROR_SUCCESS; |
| |
| exit: |
| if( head ) |
| { |
| freeifaddrs( head ); |
| } |
| if( iaaList ) |
| { |
| free( iaaList ); |
| } |
| return( (int) err ); |
| } |
| |
| #endif // MDNS_WINDOWS_USE_IPV6_IF_ADDRS |
| |
| //=========================================================================================================================== |
| // getifaddrs_ipv4 |
| //=========================================================================================================================== |
| |
| mDNSlocal int getifaddrs_ipv4( struct ifaddrs **outAddrs ) |
| { |
| int err; |
| SOCKET sock; |
| DWORD size; |
| DWORD actualSize; |
| INTERFACE_INFO * buffer; |
| INTERFACE_INFO * tempBuffer; |
| INTERFACE_INFO * ifInfo; |
| int n; |
| int i; |
| struct ifaddrs * head; |
| struct ifaddrs ** next; |
| struct ifaddrs * ifa; |
| |
| sock = INVALID_SOCKET; |
| buffer = NULL; |
| head = NULL; |
| next = &head; |
| |
| // Get the interface list. WSAIoctl is called with SIO_GET_INTERFACE_LIST, but since this does not provide a |
| // way to determine the size of the interface list beforehand, we have to start with an initial size guess and |
| // call WSAIoctl repeatedly with increasing buffer sizes until it succeeds. Limit this to 100 tries for safety. |
| |
| sock = socket( AF_INET, SOCK_DGRAM, IPPROTO_UDP ); |
| err = translate_errno( IsValidSocket( sock ), errno_compat(), kUnknownErr ); |
| require_noerr( err, exit ); |
| |
| n = 0; |
| size = 16 * sizeof( INTERFACE_INFO ); |
| for( ;; ) |
| { |
| tempBuffer = (INTERFACE_INFO *) realloc( buffer, size ); |
| require_action( tempBuffer, exit, err = WSAENOBUFS ); |
| buffer = tempBuffer; |
| |
| err = WSAIoctl( sock, SIO_GET_INTERFACE_LIST, NULL, 0, buffer, size, &actualSize, NULL, NULL ); |
| if( err == 0 ) |
| { |
| break; |
| } |
| |
| ++n; |
| require_action( n < 100, exit, err = WSAEADDRNOTAVAIL ); |
| |
| size += ( 16 * sizeof( INTERFACE_INFO ) ); |
| } |
| check( actualSize <= size ); |
| check( ( actualSize % sizeof( INTERFACE_INFO ) ) == 0 ); |
| n = (int)( actualSize / sizeof( INTERFACE_INFO ) ); |
| |
| // Process the raw interface list and build a linked list of IPv4 interfaces. |
| |
| for( i = 0; i < n; ++i ) |
| { |
| uint32_t ifIndex; |
| struct sockaddr_in netmask; |
| |
| ifInfo = &buffer[ i ]; |
| if( ifInfo->iiAddress.Address.sa_family != AF_INET ) |
| { |
| continue; |
| } |
| |
| // <rdar://problem/6220642> iTunes 8: Bonjour doesn't work after upgrading iTunes 8 |
| // See comment in getifaddrs_ipv6 |
| |
| ifIndex = 0; |
| memset( &netmask, 0, sizeof( netmask ) ); |
| err = AddressToIndexAndMask( ( struct sockaddr* ) &ifInfo->iiAddress.AddressIn, &ifIndex, ( struct sockaddr* ) &netmask ); |
| |
| if ( err ) |
| { |
| continue; |
| } |
| |
| ifa = (struct ifaddrs *) calloc( 1, sizeof( struct ifaddrs ) ); |
| require_action( ifa, exit, err = WSAENOBUFS ); |
| |
| *next = ifa; |
| next = &ifa->ifa_next; |
| |
| // Get the name. |
| |
| ifa->ifa_name = (char *) malloc( 16 ); |
| require_action( ifa->ifa_name, exit, err = WSAENOBUFS ); |
| sprintf( ifa->ifa_name, "%d", i + 1 ); |
| |
| // Get interface flags. |
| |
| ifa->ifa_flags = (u_int) ifInfo->iiFlags; |
| |
| // Get addresses. |
| |
| if ( ifInfo->iiAddress.Address.sa_family == AF_INET ) |
| { |
| struct sockaddr_in * sa4; |
| |
| sa4 = &ifInfo->iiAddress.AddressIn; |
| ifa->ifa_addr = (struct sockaddr *) calloc( 1, sizeof( *sa4 ) ); |
| require_action( ifa->ifa_addr, exit, err = WSAENOBUFS ); |
| memcpy( ifa->ifa_addr, sa4, sizeof( *sa4 ) ); |
| |
| ifa->ifa_netmask = (struct sockaddr*) calloc(1, sizeof( *sa4 ) ); |
| require_action( ifa->ifa_netmask, exit, err = WSAENOBUFS ); |
| |
| // <rdar://problem/4076478> Service won't start on Win2K. The address |
| // family field was not being initialized. |
| |
| ifa->ifa_netmask->sa_family = AF_INET; |
| ( ( struct sockaddr_in* ) ifa->ifa_netmask )->sin_addr = netmask.sin_addr; |
| ifa->ifa_extra.index = ifIndex; |
| } |
| else |
| { |
| // Emulate an interface index. |
| |
| ifa->ifa_extra.index = (uint32_t)( i + 1 ); |
| } |
| } |
| |
| // Success! |
| |
| if( outAddrs ) |
| { |
| *outAddrs = head; |
| head = NULL; |
| } |
| err = 0; |
| |
| exit: |
| |
| if( head ) |
| { |
| freeifaddrs( head ); |
| } |
| if( buffer ) |
| { |
| free( buffer ); |
| } |
| if( sock != INVALID_SOCKET ) |
| { |
| closesocket( sock ); |
| } |
| return( err ); |
| } |
| |
| //=========================================================================================================================== |
| // freeifaddrs |
| //=========================================================================================================================== |
| |
| mDNSlocal void freeifaddrs( struct ifaddrs *inIFAs ) |
| { |
| struct ifaddrs * p; |
| struct ifaddrs * q; |
| |
| // Free each piece of the structure. Set to null after freeing to handle macro-aliased fields. |
| |
| for( p = inIFAs; p; p = q ) |
| { |
| q = p->ifa_next; |
| |
| if( p->ifa_name ) |
| { |
| free( p->ifa_name ); |
| p->ifa_name = NULL; |
| } |
| if( p->ifa_addr ) |
| { |
| free( p->ifa_addr ); |
| p->ifa_addr = NULL; |
| } |
| if( p->ifa_netmask ) |
| { |
| free( p->ifa_netmask ); |
| p->ifa_netmask = NULL; |
| } |
| if( p->ifa_broadaddr ) |
| { |
| free( p->ifa_broadaddr ); |
| p->ifa_broadaddr = NULL; |
| } |
| if( p->ifa_dstaddr ) |
| { |
| free( p->ifa_dstaddr ); |
| p->ifa_dstaddr = NULL; |
| } |
| if( p->ifa_data ) |
| { |
| free( p->ifa_data ); |
| p->ifa_data = NULL; |
| } |
| free( p ); |
| } |
| } |
| |
| |
| //=========================================================================================================================== |
| // GetPrimaryInterface |
| //=========================================================================================================================== |
| |
| mDNSlocal DWORD |
| GetPrimaryInterface() |
| { |
| PMIB_IPFORWARDTABLE pIpForwardTable = NULL; |
| DWORD dwSize = 0; |
| BOOL bOrder = FALSE; |
| OSStatus err; |
| DWORD index = 0; |
| DWORD metric = 0; |
| unsigned long int i; |
| |
| // Find out how big our buffer needs to be. |
| |
| err = GetIpForwardTable(NULL, &dwSize, bOrder); |
| require_action( err == ERROR_INSUFFICIENT_BUFFER, exit, err = kUnknownErr ); |
| |
| // Allocate the memory for the table |
| |
| pIpForwardTable = (PMIB_IPFORWARDTABLE) malloc( dwSize ); |
| require_action( pIpForwardTable, exit, err = kNoMemoryErr ); |
| |
| // Now get the table. |
| |
| err = GetIpForwardTable(pIpForwardTable, &dwSize, bOrder); |
| require_noerr( err, exit ); |
| |
| |
| // Search for the row in the table we want. |
| |
| for ( i = 0; i < pIpForwardTable->dwNumEntries; i++) |
| { |
| // Look for a default route |
| |
| if ( pIpForwardTable->table[i].dwForwardDest == 0 ) |
| { |
| if ( index && ( pIpForwardTable->table[i].dwForwardMetric1 >= metric ) ) |
| { |
| continue; |
| } |
| |
| index = pIpForwardTable->table[i].dwForwardIfIndex; |
| metric = pIpForwardTable->table[i].dwForwardMetric1; |
| } |
| } |
| |
| exit: |
| |
| if ( pIpForwardTable != NULL ) |
| { |
| free( pIpForwardTable ); |
| } |
| |
| return index; |
| } |
| |
| |
| //=========================================================================================================================== |
| // AddressToIndexAndMask |
| //=========================================================================================================================== |
| |
| mDNSlocal mStatus |
| AddressToIndexAndMask( struct sockaddr * addr, uint32_t * ifIndex, struct sockaddr * mask ) |
| { |
| // Before calling AddIPAddress we use GetIpAddrTable to get |
| // an adapter to which we can add the IP. |
| |
| PMIB_IPADDRTABLE pIPAddrTable = NULL; |
| DWORD dwSize = 0; |
| mStatus err = mStatus_UnknownErr; |
| DWORD i; |
| |
| // For now, this is only for IPv4 addresses. That is why we can safely cast |
| // addr's to sockaddr_in. |
| |
| require_action( addr->sa_family == AF_INET, exit, err = mStatus_UnknownErr ); |
| |
| // Make an initial call to GetIpAddrTable to get the |
| // necessary size into the dwSize variable |
| |
| for ( i = 0; i < 100; i++ ) |
| { |
| err = GetIpAddrTable( pIPAddrTable, &dwSize, 0 ); |
| |
| if ( err != ERROR_INSUFFICIENT_BUFFER ) |
| { |
| break; |
| } |
| |
| pIPAddrTable = (MIB_IPADDRTABLE *) realloc( pIPAddrTable, dwSize ); |
| require_action( pIPAddrTable, exit, err = WSAENOBUFS ); |
| } |
| |
| require_noerr( err, exit ); |
| err = mStatus_UnknownErr; |
| |
| for ( i = 0; i < pIPAddrTable->dwNumEntries; i++ ) |
| { |
| if ( ( ( struct sockaddr_in* ) addr )->sin_addr.s_addr == pIPAddrTable->table[i].dwAddr ) |
| { |
| *ifIndex = pIPAddrTable->table[i].dwIndex; |
| ( ( struct sockaddr_in*) mask )->sin_addr.s_addr = pIPAddrTable->table[i].dwMask; |
| err = mStatus_NoError; |
| break; |
| } |
| } |
| |
| exit: |
| |
| if ( pIPAddrTable ) |
| { |
| free( pIPAddrTable ); |
| } |
| |
| return err; |
| } |
| |
| |
| //=========================================================================================================================== |
| // CanReceiveUnicast |
| //=========================================================================================================================== |
| |
| mDNSlocal mDNSBool CanReceiveUnicast( void ) |
| { |
| mDNSBool ok; |
| SocketRef sock; |
| struct sockaddr_in addr; |
| |
| // Try to bind to the port without the SO_REUSEADDR option to test if someone else has already bound to it. |
| |
| sock = socket( AF_INET, SOCK_DGRAM, IPPROTO_UDP ); |
| check_translated_errno( IsValidSocket( sock ), errno_compat(), kUnknownErr ); |
| ok = IsValidSocket( sock ); |
| if( ok ) |
| { |
| mDNSPlatformMemZero( &addr, sizeof( addr ) ); |
| addr.sin_family = AF_INET; |
| addr.sin_port = MulticastDNSPort.NotAnInteger; |
| addr.sin_addr.s_addr = htonl( INADDR_ANY ); |
| |
| ok = ( bind( sock, (struct sockaddr *) &addr, sizeof( addr ) ) == 0 ); |
| close_compat( sock ); |
| } |
| |
| dlog( kDebugLevelInfo, DEBUG_NAME "Unicast UDP responses %s\n", ok ? "okay" : "*not allowed*" ); |
| return( ok ); |
| } |
| |
| |
| //=========================================================================================================================== |
| // IsPointToPoint |
| //=========================================================================================================================== |
| |
| mDNSlocal mDNSBool IsPointToPoint( IP_ADAPTER_UNICAST_ADDRESS * addr ) |
| { |
| struct ifaddrs * addrs = NULL; |
| struct ifaddrs * p = NULL; |
| OSStatus err; |
| mDNSBool ret = mDNSfalse; |
| |
| // For now, only works for IPv4 interfaces |
| |
| if ( addr->Address.lpSockaddr->sa_family == AF_INET ) |
| { |
| // The getifaddrs_ipv4 call will give us correct information regarding IFF_POINTTOPOINT flags. |
| |
| err = getifaddrs_ipv4( &addrs ); |
| require_noerr( err, exit ); |
| |
| for ( p = addrs; p; p = p->ifa_next ) |
| { |
| if ( ( addr->Address.lpSockaddr->sa_family == p->ifa_addr->sa_family ) && |
| ( ( ( struct sockaddr_in* ) addr->Address.lpSockaddr )->sin_addr.s_addr == ( ( struct sockaddr_in* ) p->ifa_addr )->sin_addr.s_addr ) ) |
| { |
| ret = ( p->ifa_flags & IFF_POINTTOPOINT ) ? mDNStrue : mDNSfalse; |
| break; |
| } |
| } |
| } |
| |
| exit: |
| |
| if ( addrs ) |
| { |
| freeifaddrs( addrs ); |
| } |
| |
| return ret; |
| } |
| |
| |
| //=========================================================================================================================== |
| // GetWindowsVersionString |
| //=========================================================================================================================== |
| |
| mDNSlocal OSStatus GetWindowsVersionString( char *inBuffer, size_t inBufferSize ) |
| { |
| #if( !defined( VER_PLATFORM_WIN32_CE ) ) |
| #define VER_PLATFORM_WIN32_CE 3 |
| #endif |
| |
| OSStatus err; |
| OSVERSIONINFO osInfo; |
| BOOL ok; |
| const char * versionString; |
| DWORD platformID; |
| DWORD majorVersion; |
| DWORD minorVersion; |
| DWORD buildNumber; |
| |
| versionString = "unknown Windows version"; |
| |
| osInfo.dwOSVersionInfoSize = sizeof( OSVERSIONINFO ); |
| ok = GetVersionEx( &osInfo ); |
| err = translate_errno( ok, (OSStatus) GetLastError(), kUnknownErr ); |
| require_noerr( err, exit ); |
| |
| platformID = osInfo.dwPlatformId; |
| majorVersion = osInfo.dwMajorVersion; |
| minorVersion = osInfo.dwMinorVersion; |
| buildNumber = osInfo.dwBuildNumber & 0xFFFF; |
| |
| if( ( platformID == VER_PLATFORM_WIN32_WINDOWS ) && ( majorVersion == 4 ) ) |
| { |
| if( ( minorVersion < 10 ) && ( buildNumber == 950 ) ) |
| { |
| versionString = "Windows 95"; |
| } |
| else if( ( minorVersion < 10 ) && ( ( buildNumber > 950 ) && ( buildNumber <= 1080 ) ) ) |
| { |
| versionString = "Windows 95 SP1"; |
| } |
| else if( ( minorVersion < 10 ) && ( buildNumber > 1080 ) ) |
| { |
| versionString = "Windows 95 OSR2"; |
| } |
| else if( ( minorVersion == 10 ) && ( buildNumber == 1998 ) ) |
| { |
| versionString = "Windows 98"; |
| } |
| else if( ( minorVersion == 10 ) && ( ( buildNumber > 1998 ) && ( buildNumber < 2183 ) ) ) |
| { |
| versionString = "Windows 98 SP1"; |
| } |
| else if( ( minorVersion == 10 ) && ( buildNumber >= 2183 ) ) |
| { |
| versionString = "Windows 98 SE"; |
| } |
| else if( minorVersion == 90 ) |
| { |
| versionString = "Windows ME"; |
| } |
| } |
| else if( platformID == VER_PLATFORM_WIN32_NT ) |
| { |
| if( ( majorVersion == 3 ) && ( minorVersion == 51 ) ) |
| { |
| versionString = "Windows NT 3.51"; |
| } |
| else if( ( majorVersion == 4 ) && ( minorVersion == 0 ) ) |
| { |
| versionString = "Windows NT 4"; |
| } |
| else if( ( majorVersion == 5 ) && ( minorVersion == 0 ) ) |
| { |
| versionString = "Windows 2000"; |
| } |
| else if( ( majorVersion == 5 ) && ( minorVersion == 1 ) ) |
| { |
| versionString = "Windows XP"; |
| } |
| else if( ( majorVersion == 5 ) && ( minorVersion == 2 ) ) |
| { |
| versionString = "Windows Server 2003"; |
| } |
| } |
| else if( platformID == VER_PLATFORM_WIN32_CE ) |
| { |
| versionString = "Windows CE"; |
| } |
| |
| exit: |
| if( inBuffer && ( inBufferSize > 0 ) ) |
| { |
| inBufferSize -= 1; |
| strncpy( inBuffer, versionString, inBufferSize ); |
| inBuffer[ inBufferSize ] = '\0'; |
| } |
| return( err ); |
| } |
| |
| |
| //=========================================================================================================================== |
| // RegQueryString |
| //=========================================================================================================================== |
| |
| mDNSlocal mStatus |
| RegQueryString( HKEY key, LPCSTR valueName, LPSTR * string, DWORD * stringLen, DWORD * enabled ) |
| { |
| DWORD type; |
| int i; |
| mStatus err; |
| |
| *stringLen = MAX_ESCAPED_DOMAIN_NAME; |
| *string = NULL; |
| i = 0; |
| |
| do |
| { |
| if ( *string ) |
| { |
| free( *string ); |
| } |
| |
| *string = (char*) malloc( *stringLen ); |
| require_action( *string, exit, err = mStatus_NoMemoryErr ); |
| |
| err = RegQueryValueExA( key, valueName, 0, &type, (LPBYTE) *string, stringLen ); |
| |
| i++; |
| } |
| while ( ( err == ERROR_MORE_DATA ) && ( i < 100 ) ); |
| |
| require_noerr_quiet( err, exit ); |
| |
| if ( enabled ) |
| { |
| DWORD dwSize = sizeof( DWORD ); |
| |
| err = RegQueryValueEx( key, TEXT("Enabled"), NULL, NULL, (LPBYTE) enabled, &dwSize ); |
| check_noerr( err ); |
| |
| err = kNoErr; |
| } |
| |
| exit: |
| |
| return err; |
| } |
| |
| |
| //=========================================================================================================================== |
| // StringToAddress |
| //=========================================================================================================================== |
| |
| mDNSlocal mStatus StringToAddress( mDNSAddr * ip, LPSTR string ) |
| { |
| struct sockaddr_in6 sa6; |
| struct sockaddr_in sa4; |
| INT dwSize; |
| mStatus err; |
| |
| sa6.sin6_family = AF_INET6; |
| dwSize = sizeof( sa6 ); |
| |
| err = WSAStringToAddressA( string, AF_INET6, NULL, (struct sockaddr*) &sa6, &dwSize ); |
| |
| if ( err == mStatus_NoError ) |
| { |
| err = SetupAddr( ip, (struct sockaddr*) &sa6 ); |
| require_noerr( err, exit ); |
| } |
| else |
| { |
| sa4.sin_family = AF_INET; |
| dwSize = sizeof( sa4 ); |
| |
| err = WSAStringToAddressA( string, AF_INET, NULL, (struct sockaddr*) &sa4, &dwSize ); |
| err = translate_errno( err == 0, WSAGetLastError(), kUnknownErr ); |
| require_noerr( err, exit ); |
| |
| err = SetupAddr( ip, (struct sockaddr*) &sa4 ); |
| require_noerr( err, exit ); |
| } |
| |
| exit: |
| |
| return err; |
| } |
| |
| |
| //=========================================================================================================================== |
| // myGetIfAddrs |
| //=========================================================================================================================== |
| |
| mDNSlocal struct ifaddrs* |
| myGetIfAddrs(int refresh) |
| { |
| static struct ifaddrs *ifa = NULL; |
| |
| if (refresh && ifa) |
| { |
| freeifaddrs(ifa); |
| ifa = NULL; |
| } |
| |
| if (ifa == NULL) |
| { |
| getifaddrs(&ifa); |
| } |
| |
| return ifa; |
| } |
| |
| |
| //=========================================================================================================================== |
| // TCHARtoUTF8 |
| //=========================================================================================================================== |
| |
| mDNSlocal OSStatus |
| TCHARtoUTF8( const TCHAR *inString, char *inBuffer, size_t inBufferSize ) |
| { |
| #if( defined( UNICODE ) || defined( _UNICODE ) ) |
| OSStatus err; |
| int len; |
| |
| len = WideCharToMultiByte( CP_UTF8, 0, inString, -1, inBuffer, (int) inBufferSize, NULL, NULL ); |
| err = translate_errno( len > 0, errno_compat(), kUnknownErr ); |
| require_noerr( err, exit ); |
| |
| exit: |
| return( err ); |
| #else |
| return( WindowsLatin1toUTF8( inString, inBuffer, inBufferSize ) ); |
| #endif |
| } |
| |
| |
| //=========================================================================================================================== |
| // WindowsLatin1toUTF8 |
| //=========================================================================================================================== |
| |
| mDNSlocal OSStatus |
| WindowsLatin1toUTF8( const char *inString, char *inBuffer, size_t inBufferSize ) |
| { |
| OSStatus err; |
| WCHAR * utf16; |
| int len; |
| |
| utf16 = NULL; |
| |
| // Windows doesn't support going directly from Latin-1 to UTF-8 so we have to go from Latin-1 to UTF-16 first. |
| |
| len = MultiByteToWideChar( CP_ACP, 0, inString, -1, NULL, 0 ); |
| err = translate_errno( len > 0, errno_compat(), kUnknownErr ); |
| require_noerr( err, exit ); |
| |
| utf16 = (WCHAR *) malloc( len * sizeof( *utf16 ) ); |
| require_action( utf16, exit, err = kNoMemoryErr ); |
| |
| len = MultiByteToWideChar( CP_ACP, 0, inString, -1, utf16, len ); |
| err = translate_errno( len > 0, errno_compat(), kUnknownErr ); |
| require_noerr( err, exit ); |
| |
| // Now convert the temporary UTF-16 to UTF-8. |
| |
| len = WideCharToMultiByte( CP_UTF8, 0, utf16, -1, inBuffer, (int) inBufferSize, NULL, NULL ); |
| err = translate_errno( len > 0, errno_compat(), kUnknownErr ); |
| require_noerr( err, exit ); |
| |
| exit: |
| if( utf16 ) free( utf16 ); |
| return( err ); |
| } |
| |
| |
| //=========================================================================================================================== |
| // TCPCloseSocket |
| //=========================================================================================================================== |
| |
| mDNSlocal void |
| TCPCloseSocket( TCPSocket * sock ) |
| { |
| dlog( kDebugLevelChatty, DEBUG_NAME "closing TCPSocket 0x%x:%d\n", sock, sock->fd ); |
| |
| RemoveFromList( &gTCPDispatchableSockets, sock ); |
| |
| if ( sock->fd != INVALID_SOCKET ) |
| { |
| closesocket( sock->fd ); |
| sock->fd = INVALID_SOCKET; |
| } |
| } |
| |
| |
| //=========================================================================================================================== |
| // TCPFreeSocket |
| //=========================================================================================================================== |
| |
| mDNSlocal void CALLBACK |
| TCPFreeSocket( TCPSocket *sock ) |
| { |
| check( sock ); |
| |
| dlog( kDebugLevelChatty, DEBUG_NAME "freeing TCPSocket 0x%x:%d\n", sock, sock->fd ); |
| |
| if ( sock->connectEvent ) |
| { |
| CloseHandle( sock->connectEvent ); |
| sock->connectEvent = NULL; |
| } |
| |
| if ( sock->fd != INVALID_SOCKET ) |
| { |
| closesocket( sock->fd ); |
| sock->fd = INVALID_SOCKET; |
| } |
| |
| free( sock ); |
| } |
| |
| |
| //=========================================================================================================================== |
| // UDPCloseSocket |
| //=========================================================================================================================== |
| |
| mDNSlocal void |
| UDPCloseSocket( UDPSocket * sock ) |
| { |
| dlog( kDebugLevelChatty, DEBUG_NAME "closing UDPSocket %d\n", sock->fd ); |
| |
| RemoveFromList( &gUDPDispatchableSockets, sock ); |
| |
| if ( sock->fd != INVALID_SOCKET ) |
| { |
| closesocket( sock->fd ); |
| sock->fd = INVALID_SOCKET; |
| } |
| } |
| |
| |
| //=========================================================================================================================== |
| // UDPFreeSocket |
| //=========================================================================================================================== |
| |
| mDNSlocal void CALLBACK |
| UDPFreeSocket( UDPSocket * sock ) |
| { |
| check( sock ); |
| |
| dlog( kDebugLevelChatty, DEBUG_NAME "freeing UDPSocket %d\n", sock->fd ); |
| |
| if ( sock->fd != INVALID_SOCKET ) |
| { |
| closesocket( sock->fd ); |
| sock->fd = INVALID_SOCKET; |
| } |
| |
| free( sock ); |
| } |
| |
| //=========================================================================================================================== |
| // SetupAddr |
| //=========================================================================================================================== |
| |
| mDNSlocal mStatus SetupAddr(mDNSAddr *ip, const struct sockaddr *const sa) |
| { |
| if (!sa) { LogMsg("SetupAddr ERROR: NULL sockaddr"); return(mStatus_Invalid); } |
| |
| if (sa->sa_family == AF_INET) |
| { |
| struct sockaddr_in *ifa_addr = (struct sockaddr_in *)sa; |
| ip->type = mDNSAddrType_IPv4; |
| ip->ip.v4.NotAnInteger = ifa_addr->sin_addr.s_addr; |
| return(mStatus_NoError); |
| } |
| |
| if (sa->sa_family == AF_INET6) |
| { |
| struct sockaddr_in6 *ifa_addr = (struct sockaddr_in6 *)sa; |
| ip->type = mDNSAddrType_IPv6; |
| if (IN6_IS_ADDR_LINKLOCAL(&ifa_addr->sin6_addr)) ifa_addr->sin6_addr.u.Word[1] = 0; |
| ip->ip.v6 = *(mDNSv6Addr*)&ifa_addr->sin6_addr; |
| return(mStatus_NoError); |
| } |
| |
| LogMsg("SetupAddr invalid sa_family %d", sa->sa_family); |
| return(mStatus_Invalid); |
| } |
| |
| |
| mDNSlocal void GetDDNSFQDN( domainname *const fqdn ) |
| { |
| LPSTR name = NULL; |
| DWORD dwSize; |
| DWORD enabled; |
| HKEY key = NULL; |
| OSStatus err; |
| |
| check( fqdn ); |
| |
| // Initialize |
| |
| fqdn->c[0] = '\0'; |
| |
| // Get info from Bonjour registry key |
| |
| err = RegCreateKey( HKEY_LOCAL_MACHINE, kServiceParametersNode TEXT("\\DynDNS\\Setup\\") kServiceDynDNSHostNames, &key ); |
| require_noerr( err, exit ); |
| |
| err = RegQueryString( key, "", &name, &dwSize, &enabled ); |
| if ( !err && ( name[0] != '\0' ) && enabled ) |
| { |
| if ( !MakeDomainNameFromDNSNameString( fqdn, name ) || !fqdn->c[0] ) |
| { |
| dlog( kDebugLevelError, "bad DDNS host name in registry: %s", name[0] ? name : "(unknown)"); |
| } |
| } |
| |
| exit: |
| |
| if ( key ) |
| { |
| RegCloseKey( key ); |
| key = NULL; |
| } |
| |
| if ( name ) |
| { |
| free( name ); |
| name = NULL; |
| } |
| } |
| |
| |
| #ifdef UNICODE |
| mDNSlocal void GetDDNSDomains( DNameListElem ** domains, LPCWSTR lpSubKey ) |
| #else |
| mDNSlocal void GetDDNSConfig( DNameListElem ** domains, LPCSTR lpSubKey ) |
| #endif |
| { |
| char subKeyName[kRegistryMaxKeyLength + 1]; |
| DWORD cSubKeys = 0; |
| DWORD cbMaxSubKey; |
| DWORD cchMaxClass; |
| DWORD dwSize; |
| HKEY key = NULL; |
| HKEY subKey = NULL; |
| domainname dname; |
| DWORD i; |
| OSStatus err; |
| |
| check( domains ); |
| |
| // Initialize |
| |
| *domains = NULL; |
| |
| err = RegCreateKey( HKEY_LOCAL_MACHINE, lpSubKey, &key ); |
| require_noerr( err, exit ); |
| |
| // Get information about this node |
| |
| err = RegQueryInfoKey( key, NULL, NULL, NULL, &cSubKeys, &cbMaxSubKey, &cchMaxClass, NULL, NULL, NULL, NULL, NULL ); |
| require_noerr( err, exit ); |
| |
| for ( i = 0; i < cSubKeys; i++) |
| { |
| DWORD enabled; |
| |
| dwSize = kRegistryMaxKeyLength; |
| |
| err = RegEnumKeyExA( key, i, subKeyName, &dwSize, NULL, NULL, NULL, NULL ); |
| |
| if ( !err ) |
| { |
| err = RegOpenKeyExA( key, subKeyName, 0, KEY_READ, &subKey ); |
| require_noerr( err, exit ); |
| |
| dwSize = sizeof( DWORD ); |
| err = RegQueryValueExA( subKey, "Enabled", NULL, NULL, (LPBYTE) &enabled, &dwSize ); |
| |
| if ( !err && ( subKeyName[0] != '\0' ) && enabled ) |
| { |
| if ( !MakeDomainNameFromDNSNameString( &dname, subKeyName ) || !dname.c[0] ) |
| { |
| dlog( kDebugLevelError, "bad DDNS domain in registry: %s", subKeyName[0] ? subKeyName : "(unknown)"); |
| } |
| else |
| { |
| DNameListElem * domain = (DNameListElem*) malloc( sizeof( DNameListElem ) ); |
| require_action( domain, exit, err = mStatus_NoMemoryErr ); |
| |
| AssignDomainName(&domain->name, &dname); |
| domain->next = *domains; |
| |
| *domains = domain; |
| } |
| } |
| |
| RegCloseKey( subKey ); |
| subKey = NULL; |
| } |
| } |
| |
| exit: |
| |
| if ( subKey ) |
| { |
| RegCloseKey( subKey ); |
| } |
| |
| if ( key ) |
| { |
| RegCloseKey( key ); |
| } |
| } |
| |
| |
| mDNSlocal void SetDomainSecret( mDNS * const m, const domainname * inDomain ) |
| { |
| char domainUTF8[ 256 ]; |
| DomainAuthInfo *foundInList; |
| DomainAuthInfo *ptr; |
| char outDomain[ 256 ]; |
| char outKey[ 256 ]; |
| char outSecret[ 256 ]; |
| OSStatus err; |
| |
| ConvertDomainNameToCString( inDomain, domainUTF8 ); |
| |
| // If we're able to find a secret for this domain |
| |
| if ( LsaGetSecret( domainUTF8, outDomain, sizeof( outDomain ), outKey, sizeof( outKey ), outSecret, sizeof( outSecret ) ) ) |
| { |
| domainname domain; |
| domainname key; |
| |
| // Tell the core about this secret |
| |
| MakeDomainNameFromDNSNameString( &domain, outDomain ); |
| MakeDomainNameFromDNSNameString( &key, outKey ); |
| |
| for (foundInList = m->AuthInfoList; foundInList; foundInList = foundInList->next) |
| if (SameDomainName(&foundInList->domain, &domain ) ) break; |
| |
| ptr = foundInList; |
| |
| if (!ptr) |
| { |
| ptr = (DomainAuthInfo*)malloc(sizeof(DomainAuthInfo)); |
| require_action( ptr, exit, err = mStatus_NoMemoryErr ); |
| } |
| |
| err = mDNS_SetSecretForDomain(m, ptr, &domain, &key, outSecret, NULL, 0, NULL ); |
| require_action( err != mStatus_BadParamErr, exit, if (!foundInList ) mDNSPlatformMemFree( ptr ) ); |
| |
| debugf("Setting shared secret for zone %s with key %##s", outDomain, key.c); |
| } |
| |
| exit: |
| |
| return; |
| } |
| |
| |
| mDNSlocal VOID CALLBACK |
| CheckFileSharesProc( LPVOID arg, DWORD dwTimerLowValue, DWORD dwTimerHighValue ) |
| { |
| mDNS * const m = ( mDNS * const ) arg; |
| |
| ( void ) dwTimerLowValue; |
| ( void ) dwTimerHighValue; |
| |
| CheckFileShares( m ); |
| } |
| |
| |
| mDNSlocal unsigned __stdcall |
| SMBRegistrationThread( void * arg ) |
| { |
| mDNS * const m = ( mDNS * const ) arg; |
| DNSServiceRef sref = NULL; |
| HANDLE handles[ 3 ]; |
| mDNSu8 txtBuf[ 256 ]; |
| mDNSu8 * txtPtr; |
| size_t keyLen; |
| size_t valLen; |
| mDNSIPPort port = { { SMBPortAsNumber >> 8, SMBPortAsNumber & 0xFF } }; |
| DNSServiceErrorType err; |
| |
| DEBUG_UNUSED( arg ); |
| |
| handles[ 0 ] = gSMBThreadStopEvent; |
| handles[ 1 ] = gSMBThreadRegisterEvent; |
| handles[ 2 ] = gSMBThreadDeregisterEvent; |
| |
| memset( txtBuf, 0, sizeof( txtBuf ) ); |
| txtPtr = txtBuf; |
| keyLen = strlen( "netbios=" ); |
| valLen = strlen( m->p->nbname ); |
| require_action( valLen < 32, exit, err = kUnknownErr ); // This should never happen, but check to avoid further memory corruption |
| *txtPtr++ = ( mDNSu8 ) ( keyLen + valLen ); |
| memcpy( txtPtr, "netbios=", keyLen ); |
| txtPtr += keyLen; |
| if ( valLen ) { memcpy( txtPtr, m->p->nbname, valLen ); txtPtr += ( mDNSu8 ) valLen; } |
| keyLen = strlen( "domain=" ); |
| valLen = strlen( m->p->nbdomain ); |
| require_action( valLen < 32, exit, err = kUnknownErr ); // This should never happen, but check to avoid further memory corruption |
| *txtPtr++ = ( mDNSu8 )( keyLen + valLen ); |
| memcpy( txtPtr, "domain=", keyLen ); |
| txtPtr += keyLen; |
| if ( valLen ) { memcpy( txtPtr, m->p->nbdomain, valLen ); txtPtr += valLen; } |
| |
| for ( ;; ) |
| { |
| DWORD ret; |
| |
| ret = WaitForMultipleObjects( 3, handles, FALSE, INFINITE ); |
| |
| if ( ret != WAIT_FAILED ) |
| { |
| if ( ret == kSMBStopEvent ) |
| { |
| break; |
| } |
| else if ( ret == kSMBRegisterEvent ) |
| { |
| err = gDNSServiceRegister( &sref, 0, 0, NULL, "_smb._tcp,_file", NULL, NULL, ( uint16_t ) port.NotAnInteger, ( mDNSu16 )( txtPtr - txtBuf ), txtBuf, NULL, NULL ); |
| |
| if ( err ) |
| { |
| LogMsg( "SMBRegistrationThread: DNSServiceRegister returned %d\n", err ); |
| sref = NULL; |
| break; |
| } |
| } |
| else if ( ret == kSMBDeregisterEvent ) |
| { |
| if ( sref ) |
| { |
| gDNSServiceRefDeallocate( sref ); |
| sref = NULL; |
| } |
| } |
| } |
| else |
| { |
| LogMsg( "SMBRegistrationThread: WaitForMultipleObjects returned %d\n", GetLastError() ); |
| break; |
| } |
| } |
| |
| exit: |
| |
| if ( sref != NULL ) |
| { |
| gDNSServiceRefDeallocate( sref ); |
| sref = NULL; |
| } |
| |
| SetEvent( gSMBThreadQuitEvent ); |
| _endthreadex( 0 ); |
| return 0; |
| } |
| |
| |
| mDNSlocal void |
| CheckFileShares( mDNS * const m ) |
| { |
| PSHARE_INFO_1 bufPtr = ( PSHARE_INFO_1 ) NULL; |
| DWORD entriesRead = 0; |
| DWORD totalEntries = 0; |
| DWORD resume = 0; |
| mDNSBool advertise = mDNSfalse; |
| mDNSBool fileSharing = mDNSfalse; |
| mDNSBool printSharing = mDNSfalse; |
| HKEY key = NULL; |
| BOOL retry = FALSE; |
| NET_API_STATUS res; |
| mStatus err; |
| |
| check( m ); |
| |
| // Only do this if we're not shutting down |
| |
| require_action_quiet( m->AdvertiseLocalAddresses && !m->ShutdownTime, exit, err = kNoErr ); |
| |
| err = RegCreateKey( HKEY_LOCAL_MACHINE, kServiceParametersNode L"\\Services\\SMB", &key ); |
| |
| if ( !err ) |
| { |
| DWORD dwSize = sizeof( DWORD ); |
| RegQueryValueEx( key, L"Advertise", NULL, NULL, (LPBYTE) &advertise, &dwSize ); |
| } |
| |
| if ( advertise && mDNSIsFileAndPrintSharingEnabled( &retry ) ) |
| { |
| dlog( kDebugLevelTrace, DEBUG_NAME "Sharing is enabled\n" ); |
| |
| res = NetShareEnum( NULL, 1, ( LPBYTE* )&bufPtr, MAX_PREFERRED_LENGTH, &entriesRead, &totalEntries, &resume ); |
| |
| if ( ( res == ERROR_SUCCESS ) || ( res == ERROR_MORE_DATA ) ) |
| { |
| PSHARE_INFO_1 p = bufPtr; |
| DWORD i; |
| |
| for( i = 0; i < entriesRead; i++ ) |
| { |
| // We are only interested if the user is sharing anything other |
| // than the built-in "print$" source |
| |
| if ( ( p->shi1_type == STYPE_DISKTREE ) && ( wcscmp( p->shi1_netname, TEXT( "print$" ) ) != 0 ) ) |
| { |
| fileSharing = mDNStrue; |
| } |
| else if ( p->shi1_type == STYPE_PRINTQ ) |
| { |
| printSharing = mDNStrue; |
| } |
| |
| p++; |
| } |
| |
| NetApiBufferFree( bufPtr ); |
| bufPtr = NULL; |
| retry = FALSE; |
| } |
| else if ( res == NERR_ServerNotStarted ) |
| { |
| retry = TRUE; |
| } |
| } |
| |
| if ( retry ) |
| { |
| __int64 qwTimeout; |
| LARGE_INTEGER liTimeout; |
| |
| qwTimeout = -m->p->checkFileSharesTimeout * 10000000; |
| liTimeout.LowPart = ( DWORD )( qwTimeout & 0xFFFFFFFF ); |
| liTimeout.HighPart = ( LONG )( qwTimeout >> 32 ); |
| |
| SetWaitableTimer( m->p->checkFileSharesTimer, &liTimeout, 0, CheckFileSharesProc, m, FALSE ); |
| } |
| |
| if ( !m->p->smbFileSharing && fileSharing ) |
| { |
| if ( !gSMBThread ) |
| { |
| if ( !gDNSSDLibrary ) |
| { |
| gDNSSDLibrary = LoadLibrary( TEXT( "dnssd.dll" ) ); |
| require_action( gDNSSDLibrary, exit, err = GetLastError() ); |
| } |
| |
| if ( !gDNSServiceRegister ) |
| { |
| gDNSServiceRegister = ( DNSServiceRegisterFunc ) GetProcAddress( gDNSSDLibrary, "DNSServiceRegister" ); |
| require_action( gDNSServiceRegister, exit, err = GetLastError() ); |
| } |
| |
| if ( !gDNSServiceRefDeallocate ) |
| { |
| gDNSServiceRefDeallocate = ( DNSServiceRefDeallocateFunc ) GetProcAddress( gDNSSDLibrary, "DNSServiceRefDeallocate" ); |
| require_action( gDNSServiceRefDeallocate, exit, err = GetLastError() ); |
| } |
| |
| if ( !gSMBThreadRegisterEvent ) |
| { |
| gSMBThreadRegisterEvent = CreateEvent( NULL, FALSE, FALSE, NULL ); |
| require_action( gSMBThreadRegisterEvent != NULL, exit, err = GetLastError() ); |
| } |
| |
| if ( !gSMBThreadDeregisterEvent ) |
| { |
| gSMBThreadDeregisterEvent = CreateEvent( NULL, FALSE, FALSE, NULL ); |
| require_action( gSMBThreadDeregisterEvent != NULL, exit, err = GetLastError() ); |
| } |
| |
| if ( !gSMBThreadStopEvent ) |
| { |
| gSMBThreadStopEvent = CreateEvent( NULL, FALSE, FALSE, NULL ); |
| require_action( gSMBThreadStopEvent != NULL, exit, err = GetLastError() ); |
| } |
| |
| if ( !gSMBThreadQuitEvent ) |
| { |
| gSMBThreadQuitEvent = CreateEvent( NULL, FALSE, FALSE, NULL ); |
| require_action( gSMBThreadQuitEvent != NULL, exit, err = GetLastError() ); |
| } |
| |
| gSMBThread = ( HANDLE ) _beginthreadex( NULL, 0, SMBRegistrationThread, m, 0, NULL ); |
| require_action( gSMBThread != NULL, exit, err = GetLastError() ); |
| } |
| |
| SetEvent( gSMBThreadRegisterEvent ); |
| |
| m->p->smbFileSharing = mDNStrue; |
| } |
| else if ( m->p->smbFileSharing && !fileSharing ) |
| { |
| dlog( kDebugLevelTrace, DEBUG_NAME "deregistering smb type\n" ); |
| |
| if ( gSMBThreadDeregisterEvent != NULL ) |
| { |
| SetEvent( gSMBThreadDeregisterEvent ); |
| } |
| |
| m->p->smbFileSharing = mDNSfalse; |
| } |
| |
| exit: |
| |
| if ( key ) |
| { |
| RegCloseKey( key ); |
| } |
| } |
| |
| |
| BOOL |
| IsWOMPEnabled( mDNS * const m ) |
| { |
| BOOL enabled; |
| |
| mDNSInterfaceData * ifd; |
| |
| enabled = FALSE; |
| |
| for( ifd = m->p->interfaceList; ifd; ifd = ifd->next ) |
| { |
| if ( IsWOMPEnabledForAdapter( ifd->name ) ) |
| { |
| enabled = TRUE; |
| break; |
| } |
| } |
| |
| return enabled; |
| } |
| |
| |
| mDNSlocal mDNSu8 |
| IsWOMPEnabledForAdapter( const char * adapterName ) |
| { |
| char fileName[80]; |
| NDIS_OID oid; |
| DWORD count; |
| HANDLE handle = INVALID_HANDLE_VALUE; |
| NDIS_PNP_CAPABILITIES * pNPC = NULL; |
| int err; |
| mDNSu8 ok = TRUE; |
| |
| require_action( adapterName != NULL, exit, ok = FALSE ); |
| |
| dlog( kDebugLevelTrace, DEBUG_NAME "IsWOMPEnabledForAdapter: %s\n", adapterName ); |
| |
| // Construct a device name to pass to CreateFile |
| |
| strncpy_s( fileName, sizeof( fileName ), DEVICE_PREFIX, strlen( DEVICE_PREFIX ) ); |
| strcat_s( fileName, sizeof( fileName ), adapterName ); |
| handle = CreateFileA( fileName, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, INVALID_HANDLE_VALUE ); |
| require_action ( handle != INVALID_HANDLE_VALUE, exit, ok = FALSE ); |
| |
| // We successfully opened the driver, format the IOCTL to pass the driver. |
| |
| oid = OID_PNP_CAPABILITIES; |
| pNPC = ( NDIS_PNP_CAPABILITIES * ) malloc( sizeof( NDIS_PNP_CAPABILITIES ) ); |
| require_action( pNPC != NULL, exit, ok = FALSE ); |
| ok = ( mDNSu8 ) DeviceIoControl( handle, IOCTL_NDIS_QUERY_GLOBAL_STATS, &oid, sizeof( oid ), pNPC, sizeof( NDIS_PNP_CAPABILITIES ), &count, NULL ); |
| err = translate_errno( ok, GetLastError(), kUnknownErr ); |
| require_action( !err, exit, ok = FALSE ); |
| ok = ( mDNSu8 ) ( ( count == sizeof( NDIS_PNP_CAPABILITIES ) ) && ( pNPC->Flags & NDIS_DEVICE_WAKE_ON_MAGIC_PACKET_ENABLE ) ); |
| |
| exit: |
| |
| if ( pNPC != NULL ) |
| { |
| free( pNPC ); |
| } |
| |
| if ( handle != INVALID_HANDLE_VALUE ) |
| { |
| CloseHandle( handle ); |
| } |
| |
| dlog( kDebugLevelTrace, DEBUG_NAME "IsWOMPEnabledForAdapter returns %s\n", ok ? "true" : "false" ); |
| |
| return ( mDNSu8 ) ok; |
| } |
| |
| |
| void |
| DispatchSocketEvents( mDNS * const inMDNS ) |
| { |
| UDPSocket * udpSock; |
| TCPSocket * tcpSock; |
| |
| while ( ( udpSock = ( UDPSocket* ) gUDPDispatchableSockets.Head ) != NULL ) |
| { |
| dlog( kDebugLevelChatty, DEBUG_NAME "%s: calling DispatchUDPEvent on socket %d, error = %d, bytesTransferred = %d\n", |
| __ROUTINE__, udpSock->fd, udpSock->overlapped.error, udpSock->overlapped.bytesTransferred ); |
| RemoveFromList( &gUDPDispatchableSockets, udpSock ); |
| DispatchUDPEvent( inMDNS, udpSock ); |
| } |
| |
| while ( ( tcpSock = ( TCPSocket* ) gTCPDispatchableSockets.Head ) != NULL ) |
| { |
| dlog( kDebugLevelChatty, DEBUG_NAME "%s: calling DispatchTCPEvent on socket %d, error = %d, bytesTransferred = %d\n", |
| __ROUTINE__, tcpSock->fd, tcpSock->overlapped.error, tcpSock->overlapped.bytesTransferred ); |
| RemoveFromList( &gTCPDispatchableSockets, tcpSock ); |
| DispatchTCPEvent( inMDNS, tcpSock ); |
| } |
| } |
| |
| |
| mDNSlocal void |
| DispatchUDPEvent( mDNS * const inMDNS, UDPSocket * sock ) |
| { |
| ( void ) inMDNS; |
| |
| // If we've closed the socket, then we want to ignore |
| // this read. The packet might have been queued before |
| // the socket was closed. |
| |
| if ( sock->fd != INVALID_SOCKET ) |
| { |
| const mDNSInterfaceID iid = sock->ifd ? sock->ifd->interfaceInfo.InterfaceID : NULL; |
| mDNSu8 * end = ( (mDNSu8 *) &sock->packet ) + sock->overlapped.bytesTransferred; |
| |
| dlog( kDebugLevelChatty, DEBUG_NAME "calling mDNSCoreReceive on socket: %d\n", sock->fd ); |
| mDNSCoreReceive( sock->m, &sock->packet, end, &sock->overlapped.srcAddr, sock->overlapped.srcPort, &sock->overlapped.dstAddr, sock->overlapped.dstPort, iid ); |
| } |
| |
| // If the socket is still good, then start up another asynchronous read |
| |
| if ( sock->fd != INVALID_SOCKET ) |
| { |
| int err = UDPBeginRecv( sock ); |
| check_noerr( err ); |
| } |
| } |
| |
| |
| mDNSlocal void |
| DispatchTCPEvent( mDNS * const inMDNS, TCPSocket * sock ) |
| { |
| ( void ) inMDNS; |
| |
| if ( sock->fd != INVALID_SOCKET ) |
| { |
| sock->eptr += sock->overlapped.bytesTransferred; |
| sock->lastError = sock->overlapped.error; |
| |
| if ( !sock->overlapped.error && !sock->overlapped.bytesTransferred ) |
| { |
| sock->closed = TRUE; |
| } |
| |
| if ( sock->readEventHandler != NULL ) |
| { |
| dlog( kDebugLevelChatty, DEBUG_NAME "calling TCP read handler on socket: %d\n", sock->fd ); |
| sock->readEventHandler( sock ); |
| } |
| } |
| |
| // If the socket is still good, then start up another asynchronous read |
| |
| if ( !sock->closed && ( sock->fd != INVALID_SOCKET ) ) |
| { |
| int err = TCPBeginRecv( sock ); |
| check_noerr( err ); |
| } |
| } |