static
int*
VmDnsGetLockKey(
pthread_key_t* pLockKey
)
{
DWORD dwError = ERROR_SUCCESS;
int* pCounter = NULL;
int* pCount = (int*)pthread_getspecific(*pLockKey);
if (!pCount)
{
dwError = VmDnsAllocateMemory(sizeof(int), (void**)&(pCounter));
BAIL_ON_VMDNS_ERROR(dwError);
dwError = pthread_setspecific(*pLockKey, pCounter);
dwError = POSIX_TO_WIN32_ERROR(dwError);
BAIL_ON_VMDNS_ERROR(dwError);
pCounter = NULL;
pCount = (int*)pthread_getspecific(*pLockKey);
}
cleanup:
return pCount;
error:
VMDNS_SAFE_FREE_MEMORY(pCounter);
goto cleanup;
}
DWORD
VmDnsAllocateRWLock(
PVMDNS_RWLOCK* ppLock
)
{
DWORD dwError = 0;
PVMDNS_RWLOCK pLock = NULL;
BAIL_ON_VMDNS_INVALID_POINTER(ppLock, dwError);
dwError = VmDnsAllocateMemory(sizeof(VMDNS_RWLOCK), (void**)&pLock);
BAIL_ON_VMDNS_ERROR(dwError);
dwError = pthread_rwlock_init(&pLock->rwLock, NULL);
dwError = POSIX_TO_WIN32_ERROR(dwError);
BAIL_ON_VMDNS_ERROR(dwError);
dwError = pthread_key_create(&pLock->readKey, VmDnsFreeLockCount);
dwError = POSIX_TO_WIN32_ERROR(dwError);
BAIL_ON_VMDNS_ERROR(dwError);
dwError = pthread_key_create(&pLock->writeKey, VmDnsFreeLockCount);
dwError = POSIX_TO_WIN32_ERROR(dwError);
BAIL_ON_VMDNS_ERROR(dwError);
*ppLock = pLock;
cleanup:
return dwError;
error:
VMDNS_SAFE_FREE_MEMORY(pLock);
goto cleanup;
}
VOID
VmDnsFreeMutex(
PVMDNS_MUTEX pMutex
)
{
VmDnsFreeMutexContent(pMutex);
VMDNS_SAFE_FREE_MEMORY( pMutex );
}
VOID
VmDnsPropertyListFree(
PVMDNS_PROPERTY_LIST pList
)
{
DWORD i = 0;
if (pList)
{
for (i = 0; i < pList->dwCurrentSize; ++i)
{
VmDnsPropertyObjectRelease(pList->ppProperties[i]);
}
VMDNS_SAFE_FREE_MEMORY(pList->ppProperties);
VMDNS_SAFE_FREE_MEMORY(pList);
}
}
VOID
VmDnsFreeCondition(
PVMDNS_COND pCondition
)
{
VmDnsFreeConditionContent( pCondition );
VMDNS_SAFE_FREE_MEMORY( pCondition );
}
DWORD
VmDnsCreateThread(
PVMDNS_THREAD pThread,
BOOLEAN bDetached,
VmDnsStartRoutine* pStartRoutine,
PVOID pArgs
)
{
DWORD dwError = ERROR_SUCCESS;
PVMDNS_THREAD_START_INFO pThreadStartInfo = NULL;
pthread_attr_t thrAttr;
BOOLEAN bThreadAttrInited = FALSE;
if ( ( pThread == NULL ) || ( pStartRoutine == NULL ) )
{
dwError = ERROR_INVALID_PARAMETER;
BAIL_ON_VMDNS_ERROR(dwError);
}
if( bDetached != FALSE )
{
pthread_attr_init(&thrAttr);
bThreadAttrInited = TRUE;
pthread_attr_setdetachstate(&thrAttr, PTHREAD_CREATE_DETACHED);
}
dwError = VmDnsAllocateMemory(
sizeof(VMDNS_THREAD_START_INFO),
((PVOID*)&pThreadStartInfo)
);
BAIL_ON_VMDNS_ERROR(dwError);
pThreadStartInfo->pStartRoutine = pStartRoutine;
pThreadStartInfo->pArgs = pArgs;
dwError = pthread_create(
pThread,
((bDetached == FALSE) ? NULL : &thrAttr),
ThreadFunction,
pThreadStartInfo
);
BAIL_ON_VMDNS_ERROR(dwError);
// we started successfully -> pThreadStartInfo is now owned by
// ThreadFunction
pThreadStartInfo = NULL;
error:
if(bThreadAttrInited != FALSE)
{
pthread_attr_destroy(&thrAttr);
}
VMDNS_SAFE_FREE_MEMORY( pThreadStartInfo );
return dwError;
}
DWORD
VmDnsPropertyListAdd(
PVMDNS_PROPERTY_LIST pList,
PVMDNS_PROPERTY_OBJECT pProperty
)
{
PVMDNS_PROPERTY_OBJECT *pNewList = NULL;
DWORD dwError = 0;
BAIL_ON_VMDNS_INVALID_POINTER(pList, dwError);
BAIL_ON_VMDNS_INVALID_POINTER(pProperty, dwError);
if (pList->dwCurrentSize >= pList->dwMaxSize)
{
pList->dwMaxSize = 2 * pList->dwMaxSize;
dwError = VmDnsAllocateMemory(
sizeof(PVMDNS_PROPERTY_OBJECT) * pList->dwMaxSize,
(PVOID*)&pNewList);
BAIL_ON_VMDNS_ERROR(dwError);
dwError = VmDnsCopyMemory(
pNewList,
sizeof(PVMDNS_PROPERTY_OBJECT) * pList->dwMaxSize,
pList->ppProperties,
sizeof(PVMDNS_PROPERTY_OBJECT) * pList->dwCurrentSize);
BAIL_ON_VMDNS_ERROR(dwError);
VMDNS_SAFE_FREE_MEMORY(pList->ppProperties);
pList->ppProperties = pNewList;
pNewList = NULL;
}
VmDnsPropertyObjectAddRef(pProperty);
pList->ppProperties[pList->dwCurrentSize] = pProperty;
++pList->dwCurrentSize;
cleanup:
return dwError;
error:
VMDNS_SAFE_FREE_MEMORY(pNewList);
goto cleanup;
}
VOID
VmDnsSockWinFreeIoBuffer(
PVM_SOCK_IO_BUFFER pIoBuffer
)
{
PVM_SOCK_IO_CONTEXT pIoContext = CONTAINING_RECORD(pIoBuffer, VM_SOCK_IO_CONTEXT, IoBuffer);
VMDNS_LOG_INFO("Freeing Io Buffer - Address: %p, Event: %d, Size: %d", (DWORD)pIoBuffer, pIoContext->eventType, pIoBuffer->dwCurrentSize);
VMDNS_SAFE_FREE_MEMORY(pIoContext);
}
static
PVOID
ThreadFunction(
PVOID pArgs
)
{
DWORD dwError = ERROR_SUCCESS;
PVMDNS_START_ROUTINE pThreadStart = NULL;
PVOID pThreadArgs = NULL;
union
{
DWORD dwError;
PVOID pvRet;
} retVal = { 0 };
if( pArgs == NULL)
{
dwError = ERROR_INVALID_PARAMETER;
BAIL_ON_VMDNS_ERROR(dwError);
}
pThreadStart = ((PVMDNS_THREAD_START_INFO)pArgs)->pStartRoutine;
pThreadArgs = ((PVMDNS_THREAD_START_INFO)pArgs)->pArgs;
if( pThreadStart == NULL )
{
dwError = ERROR_INVALID_PARAMETER;
BAIL_ON_VMDNS_ERROR(dwError);
}
VMDNS_SAFE_FREE_MEMORY( pArgs );
dwError = pThreadStart( pThreadArgs );
BAIL_ON_VMDNS_ERROR(dwError);
error:
VMDNS_SAFE_FREE_MEMORY( pArgs );
retVal.dwError = dwError;
return retVal.pvRet;
}
static
VOID
VmDnsFreeForwarderPacketContext(
PVMDNS_FORWARDER_PACKET_CONTEXT pForwarderContext
)
{
if (pForwarderContext)
{
VMDNS_SAFE_FREE_MEMORY(pForwarderContext);
}
}
VOID
VmDnsClearPtrRecord(
PVMDNS_RECORD pRecord
)
{
if (pRecord)
{
VMDNS_SAFE_FREE_STRINGA(pRecord->pszName);
VMDNS_SAFE_FREE_MEMORY(pRecord->Data.PTR.pNameHost);
}
}
static
VOID
VmDnsFreeForwarderEntry(
PVMDNS_FORWARDER_ENTRY pForwarderEntry
)
{
if (pForwarderEntry)
{
(void) VmDnsForwarderMetricsDelete(pForwarderEntry);
VMDNS_SAFE_FREE_STRINGA(pForwarderEntry->pszForwarder);
VMDNS_SAFE_FREE_MEMORY(pForwarderEntry);
}
}
VOID
VmDnsSockPosixFreeIoBuffer(
PVM_SOCK_IO_BUFFER pIoBuffer
)
{
// VMDNS_LOG_DEBUG("pIoBuffer:%p released from thread %p", pIoBuffer, pthread_self());
if (pIoBuffer && pIoBuffer->pClientSocket)
{
VmDnsSockPosixReleaseSocket(pIoBuffer->pClientSocket);
}
PVM_SOCK_IO_CONTEXT pIoContext = CONTAINING_RECORD(pIoBuffer, VM_SOCK_IO_CONTEXT, IoBuffer);
VMDNS_SAFE_FREE_MEMORY(pIoContext);
}
VOID
VmDnsRecordObjectRelease(
PVMDNS_RECORD_OBJECT pRecordObj
)
{
if (pRecordObj)
{
if (0 == InterlockedDecrement(&pRecordObj->lRefCount))
{
VMDNS_FREE_RECORD(pRecordObj->pRecord);
VMDNS_SAFE_FREE_MEMORY(pRecordObj);
}
}
}
static VOID
VmDnsSockWinFreeSocket(
PVM_SOCKET pSocket
)
{
if (pSocket->hSocket != INVALID_SOCKET)
{
CancelIo((HANDLE)pSocket->hSocket);
closesocket(pSocket->hSocket);
pSocket->hSocket = INVALID_SOCKET;
}
VMDNS_SAFE_FREE_MEMORY(pSocket);
}
static
VOID
VmDnsFreeMemberShips(
PSTR* ppszMemberships,
DWORD dwMemberships
)
{
DWORD i = 0;
for(i = 0; i < dwMemberships; ++i)
{
VMDNS_SAFE_FREE_STRINGA(ppszMemberships[i]);
}
VMDNS_SAFE_FREE_MEMORY(ppszMemberships);
}
VMDNS_API
VOID
VmDnsCloseServer(PVMDNS_SERVER_CONTEXT pServerContext)
{
if(pServerContext)
{
if (pServerContext->hBinding)
{
DWORD dwError = 0;
rpc_binding_free(&pServerContext->hBinding, &dwError);
pServerContext->hBinding = NULL;
}
VMDNS_SAFE_FREE_MEMORY(pServerContext);
}
}
static
DWORD
VmDnsPeekResponseCode(
DWORD dwResponseSize,
PBYTE pResponseBytes,
PDWORD pdwResponseCode
)
{
DWORD dwError = ERROR_SUCCESS;
PVMDNS_HEADER pDnsHeader = NULL;
PVMDNS_MESSAGE_BUFFER pDnsMessageBuffer = NULL;
if (!pdwResponseCode)
{
dwError = ERROR_INVALID_PARAMETER;
BAIL_ON_VMDNS_ERROR(dwError);
}
dwError = VmDnsGetDnsMessageBuffer(
pResponseBytes,
dwResponseSize,
&pDnsMessageBuffer
);
BAIL_ON_VMDNS_ERROR(dwError);
dwError = VmDnsReadDnsHeaderFromBuffer(
pDnsMessageBuffer,
&pDnsHeader
);
BAIL_ON_VMDNS_ERROR(dwError);
*pdwResponseCode = pDnsHeader->codes.RCODE;
cleanup:
if (pDnsMessageBuffer)
{
VmDnsFreeBufferStream(pDnsMessageBuffer);
}
VMDNS_SAFE_FREE_MEMORY(pDnsHeader);
return dwError;
error :
goto cleanup;
}
VOID
VmDnsSockPosixFreeIoBuffer(
PVM_SOCK_IO_BUFFER pIoBuffer
)
{
PVM_SOCK_IO_CONTEXT pIoContext = NULL;
if (pIoBuffer)
{
if (pIoBuffer->pClientSocket)
{
VmDnsSockPosixReleaseSocket(pIoBuffer->pClientSocket);
}
pIoContext = CONTAINING_RECORD(pIoBuffer, VM_SOCK_IO_CONTEXT, IoBuffer);
VMDNS_SAFE_FREE_MEMORY(pIoContext);
}
}
VOID
VmDnsForwarderCleanup(
PVMDNS_FORWARDER_CONTEXT pForwarder
)
{
DWORD i = 0;
if (pForwarder)
{
for (i = 0; i < pForwarder->dwCount; ++i)
{
if (pForwarder->pForwarderEntries[i])
{
VmDnsFreeForwarderEntry(pForwarder->pForwarderEntries[i]);
}
}
VMDNS_FREE_RWLOCK(pForwarder->pLock);
VMDNS_SAFE_FREE_MEMORY(pForwarder);
}
}
VOID
VmDnsSockWinCloseEventQueue(
PVM_SOCK_EVENT_QUEUE pQueue
)
{
if (pQueue)
{
if (pQueue->hEventListen != WSA_INVALID_EVENT)
{
WSACloseEvent(pQueue->hEventListen);
}
if (pQueue->hIOCP)
{
CloseHandle(pQueue->hIOCP);
}
VMDNS_SAFE_FREE_MEMORY(pQueue);
}
}
DWORD
VmDnsForwardRequest(
PVMDNS_FORWARDER_PACKET_CONTEXT pForwarderPacketContext,
BOOL bUseUDP,
PVM_SOCK_IO_BUFFER pIoBuffer
)
{
DWORD dwError = 0;
PSTR pszForwarder = NULL;
VM_SOCK_CREATE_FLAGS flags = (bUseUDP) ? VM_SOCK_CREATE_FLAGS_UDP : VM_SOCK_CREATE_FLAGS_TCP;
PVM_SOCKET pSocket = NULL;
DWORD dwQuerySize = 0;
PBYTE pQueryBuffer = NULL;
struct sockaddr_storage address;
socklen_t addLenth = sizeof address;
PVM_SOCK_IO_BUFFER pIoRequest = NULL;
PVM_SOCK_IO_BUFFER pOldRequest = NULL;
PVMDNS_FORWARDER_PACKET_CONTEXT pCurrentContext = NULL;
if (!pIoBuffer || (bUseUDP && (pIoBuffer->dwTotalBytesTransferred > VMDNS_UDP_PACKET_SIZE))||
!pIoBuffer->pData ||
!pForwarderPacketContext)
{
dwError = ERROR_INVALID_PARAMETER;
BAIL_ON_VMDNS_ERROR(dwError);
}
dwQuerySize = pIoBuffer->dwTotalBytesTransferred;
pQueryBuffer = pIoBuffer->pData;
pCurrentContext = VmDnsAcquireForwarderPacketContext(pForwarderPacketContext);
dwError = VmDnsGetForwarderAtIndex(
gpSrvContext->pForwarderContext,
pCurrentContext->dwCurrentIndex++,
&pszForwarder
);
BAIL_ON_VMDNS_ERROR(dwError);
dwError = VmDnsSockOpenClient(
pszForwarder,
VMW_DNS_PORT,
flags,
&pSocket);
BAIL_ON_VMDNS_ERROR(dwError);
dwError = VmDnsSockSetNonBlocking(pSocket);
BAIL_ON_VMDNS_ERROR(dwError);
dwError = VmDnsSockGetAddress(
pSocket,
&address,
&addLenth);
BAIL_ON_VMDNS_ERROR(dwError);
dwError = VmDnsSockAllocateIoBuffer(
bUseUDP?
VM_SOCK_EVENT_TYPE_UDP_FWD_RESPONSE_DATA_READ:
VM_SOCK_EVENT_TYPE_TCP_FWD_RESPONSE_DATA_READ,
(PVM_SOCK_EVENT_CONTEXT)pCurrentContext,
dwQuerySize,
&pIoRequest);
BAIL_ON_VMDNS_ERROR(dwError);
dwError = VmDnsCopyMemory(
pIoRequest->pData,
pIoRequest->dwExpectedSize,
pQueryBuffer,
dwQuerySize);
BAIL_ON_VMDNS_ERROR(dwError);
memcpy(
&pIoRequest->clientAddr,
&pIoBuffer->clientAddr,
pIoBuffer->addrLen);
pIoRequest->addrLen = pIoBuffer->addrLen;
pIoRequest->pClientSocket = VmDnsSockAcquire(pIoBuffer->pClientSocket);
dwError = VmDnsSockSetData(
pSocket,
pIoRequest,
(PVOID*)&pOldRequest
);
BAIL_ON_VMDNS_ERROR(dwError);
(VOID)VmDnsLogDnsMessage(VMDNS_LOG_LEVEL_INFO, "DNS FWD REQ: ", pQueryBuffer, dwQuerySize);
dwError = VmDnsSockWrite(
pSocket,
NULL,
0,
pIoRequest);
BAIL_ON_VMDNS_ERROR(dwError);
dwError = VmDnsSockEventQueueAdd(
gpSrvContext->pSockContext->pEventQueue,
TRUE,
pSocket
);
BAIL_ON_VMDNS_ERROR(dwError);
// VmDnsOPStatisticUpdate(FORWARDER_QUERY_COUNT);
cleanup:
VMDNS_SAFE_FREE_MEMORY(pszForwarder);
if (pOldRequest)
{
VMDNS_LOG_IO_RELEASE(pOldRequest);
VmDnsSockReleaseIoBuffer(pOldRequest);
}
if (pSocket)
{
VmDnsSockRelease(pSocket);
}
return dwError;
error:
if (pCurrentContext)
{
VmDnsReleaseForwarderPacketContext(pCurrentContext);
}
if (pIoRequest)
{
VMDNS_LOG_IO_RELEASE(pIoRequest);
VmDnsSockReleaseIoBuffer(pIoRequest);
}
goto cleanup;
}
static
DWORD
_GetForwarders(
PVMDNS_SERVER_CONTEXT pServerContext,
PCSTR pszZone,
PVMDNS_FORWARDERS* ppForwarders
)
{
DWORD dwError = 0;
PVMDNS_FORWARDERS pDnsForwarders = NULL;
PVMDNS_FORWARDERS pDnsForwardersOutput = NULL;
PSTR* ppszForwarders = NULL;
DWORD dwCount = 0;
dwError = VmDnsValidateContext(pServerContext);
BAIL_ON_VMDNS_ERROR(dwError);
BAIL_ON_VMDNS_INVALID_POINTER(ppForwarders, dwError);
DCETHREAD_TRY
{
if (pszZone)
{
dwError = VmDnsRpcGetZoneForwarders(
pServerContext->hBinding,
(PDNS_STRING)pszZone,
&pDnsForwarders);
}
else
{
dwError = VmDnsRpcGetForwarders(
pServerContext->hBinding,
&pDnsForwarders);
}
}
DCETHREAD_CATCH_ALL(THIS_CATCH)
{
dwError = VmDnsRpcGetErrorCode(THIS_CATCH);
}
DCETHREAD_ENDTRY;
BAIL_ON_VMDNS_ERROR(dwError);
if (pDnsForwarders)
{
DWORD i = 0;
PSTR szTemp = NULL;
if (pDnsForwarders->dwCount > 0)
{
dwError = VmDnsAllocateMemory(
pDnsForwarders->dwCount * sizeof(PSTR),
(PVOID*)&ppszForwarders);
BAIL_ON_VMDNS_ERROR(dwError);
for (i = 0; i < pDnsForwarders->dwCount; ++i)
{
dwError = VmDnsAllocateStringA(
pDnsForwarders->ppszName[i],
&szTemp
);
BAIL_ON_VMDNS_ERROR(dwError);
ppszForwarders[i] = szTemp;
++dwCount;
}
}
dwError = VmDnsAllocateMemory(
sizeof(VMDNS_FORWARDERS),
(PVOID*)&pDnsForwardersOutput);
BAIL_ON_VMDNS_ERROR(dwError);
pDnsForwardersOutput->dwCount = pDnsForwarders->dwCount;
pDnsForwardersOutput->ppszName = ppszForwarders;
}
*ppForwarders = pDnsForwardersOutput;
cleanup:
if (pDnsForwarders)
{
VmDnsRpcFreeForwarders(pDnsForwarders);
}
return dwError;
error:
if (ppszForwarders)
{
VmDnsFreeStringCountedArrayA(ppszForwarders, dwCount);
}
if (pDnsForwardersOutput)
{
VMDNS_SAFE_FREE_MEMORY(pDnsForwardersOutput);
}
goto cleanup;
}
DWORD
VmDnsSerializeDnsRecord(
PVMDNS_RECORD pDnsRecord,
PBYTE* ppBytes,
DWORD* pdwSize,
BOOL bTokenizeDomainName
)
{
DWORD dwError = 0;
PVMDNS_MESSAGE_BUFFER pVmDnsBuffer = NULL;
PBYTE pBytes = NULL;
DWORD dwSize = 0;
if (!pDnsRecord ||
!ppBytes ||
!pdwSize
)
{
dwError = ERROR_INVALID_PARAMETER;
BAIL_ON_VMDNS_ERROR (dwError);
}
dwError = VmDnsAllocateBufferStream(
0,
&pVmDnsBuffer
);
BAIL_ON_VMDNS_ERROR(dwError);
pVmDnsBuffer->bTokenizeDomainName = bTokenizeDomainName;
dwError = VmDnsWriteRecordToBuffer(
pDnsRecord,
pVmDnsBuffer
);
BAIL_ON_VMDNS_ERROR(dwError);
dwError = VmDnsCopyBufferFromBufferStream(
pVmDnsBuffer,
NULL,
&dwSize
);
BAIL_ON_VMDNS_ERROR(dwError);
dwError = VmDnsAllocateMemory(
dwSize,
(PVOID *)&pBytes
);
BAIL_ON_VMDNS_ERROR(dwError);
dwError = VmDnsCopyBufferFromBufferStream(
pVmDnsBuffer,
pBytes,
&dwSize
);
BAIL_ON_VMDNS_ERROR(dwError);
*ppBytes = pBytes;
*pdwSize = dwSize;
cleanup:
if (pVmDnsBuffer)
{
VmDnsFreeBufferStream(pVmDnsBuffer);
}
return dwError;
error:
if (ppBytes)
{
*ppBytes = NULL;
}
if (pdwSize)
{
*pdwSize = 0;
}
VMDNS_SAFE_FREE_MEMORY(pBytes);
goto cleanup;
}
/**
* @brief Opens a client socket
*
* @param[in] pszHost Target host name or IP Address.
* An empty string will imply the local host.
* @param[in] usPort 16 bit port number
* @param[in] dwFlags 32 bit flags specifying socket creation preferences
* @param[out] ppSocket Pointer to created socket context
*
* @return 0 on success
*/
DWORD
VmDnsSockWinOpenClient(
PCSTR pszHost,
USHORT usPort,
VM_SOCK_CREATE_FLAGS dwFlags,
PVM_SOCKET* ppSocket
)
{
DWORD dwError = 0;
DWORD dwSockFlags = 0;
int nAddressFamily = AF_INET;
int nConnectionType = SOCK_STREAM;
struct addrinfo hints = { 0 };
struct addrinfo* pAddrInfo = NULL;
struct addrinfo* pInfo = NULL;
struct addrinfo* pClientAddress = NULL;
CHAR szPort[32] = { 0 };
SOCKET socket = INVALID_SOCKET;
PVM_SOCKET pSocket = NULL;
if (!pszHost || !usPort || !ppSocket)
{
dwError = ERROR_INVALID_PARAMETER;
BAIL_ON_VMDNS_ERROR(dwError);
}
if (dwFlags & VM_SOCK_CREATE_FLAGS_IPV6)
{
hints.ai_family = AF_INET6;
}
else if (dwFlags & VM_SOCK_CREATE_FLAGS_IPV4)
{
hints.ai_family = AF_INET;
}
else
{
hints.ai_family = AF_UNSPEC;
}
if (dwFlags & VM_SOCK_CREATE_FLAGS_UDP)
{
nConnectionType = hints.ai_socktype = SOCK_DGRAM;
}
else
{
nConnectionType = hints.ai_socktype = SOCK_STREAM;
}
hints.ai_flags = AI_CANONNAME | AI_NUMERICSERV;
sprintf_s(szPort, sizeof(szPort), "%d", usPort);
if (getaddrinfo(pszHost, szPort, &hints, &pAddrInfo) != 0)
{
dwError = WSAGetLastError();
BAIL_ON_VMDNS_ERROR(dwError);
}
for (pInfo = pAddrInfo;
(socket == INVALID_SOCKET && pInfo != NULL);
pInfo = pInfo->ai_next)
{
socket = WSASocketW(
pInfo->ai_family,
pInfo->ai_socktype,
pInfo->ai_protocol,
NULL,
0,
dwSockFlags);
if (socket == INVALID_SOCKET)
{
continue;
}
if (nConnectionType == SOCK_STREAM)
{
if (connect(socket, pInfo->ai_addr, pInfo->ai_addrlen) < 0)
{
dwError = WSAGetLastError();
continue;
}
}
pClientAddress = pInfo;
}
if (socket == INVALID_SOCKET)
{
dwError = ERROR_CONNECTION_UNAVAIL;
BAIL_ON_VMDNS_ERROR(dwError);
}
dwError = VmDnsAllocateMemory(sizeof(*pSocket), (PVOID*)&pSocket);
BAIL_ON_VMDNS_ERROR(dwError);
pSocket->refCount = 1;
pSocket->type = VM_SOCK_TYPE_CLIENT;
if (nConnectionType == SOCK_STREAM)
{
pSocket->protocol = VM_SOCK_PROTOCOL_TCP;
}
else
{
pSocket->protocol = VM_SOCK_PROTOCOL_UDP;
}
dwError = VmDnsSockWinCopyTargetAddress(pClientAddress, pSocket);
BAIL_ON_VMDNS_ERROR(dwError);
pSocket->hSocket = socket;
socket = INVALID_SOCKET;
*ppSocket = pSocket;
pSocket = NULL;
cleanup:
if (pAddrInfo)
{
freeaddrinfo(pAddrInfo);
}
return dwError;
error :
if (socket != INVALID_SOCKET)
{
closesocket(socket);
}
VMDNS_SAFE_FREE_MEMORY(pSocket);
goto cleanup;
}