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boinc/clientlib/win/NetworkTracker.cpp

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// Berkeley Open Infrastructure for Network Computing
// http://boinc.berkeley.edu
// Copyright (C) 2005 University of California
//
// This is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation;
// either version 2.1 of the License, or (at your option) any later version.
//
// This software is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU Lesser General Public License for more details.
//
// To view the GNU Lesser General Public License visit
// http://www.gnu.org/copyleft/lesser.html
// or write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#include "stdafx.h"
#include "BOINCSENSSink.h"
#include "SENSSubscriptions.h"
#include "SENSNetworkSubscriptions.h"
#include "SENSOnNowSubscriptions.h"
#include "SENSLogonSubscriptions.h"
IEventSystem* gpIEventSystem = NULL;
SENS_SUBSCRIPTION_GROUP gSubscriptionGroups[3];
unsigned int giSubscriptionGroupCount = 0;
std::vector<PNETWORK_CONNECTION> gpNetworkConnections;
EXTERN_C __declspec(dllexport) BOOL BOINCIsNetworkAlive( LPDWORD lpdwFlags )
{
unsigned int i = 0;
BOOL bReturnValue = FALSE;
BOOL bCachePopulated = FALSE;
PNETWORK_CONNECTION pNetworkConnection = NULL;
// Check cached connection state
if (!gpNetworkConnections.empty()) {
bCachePopulated = TRUE;
for (i=0; i<gpNetworkConnections.size(); i++) {
pNetworkConnection = gpNetworkConnections[i];
if (pNetworkConnection->ulType & *lpdwFlags) {
bReturnValue = TRUE;
}
}
}
// If we do not have any cached information, then fall back to other
// methods
if (!bCachePopulated) {
bReturnValue = IsNetworkAlive( lpdwFlags );
if (!bReturnValue) {
DWORD current_flags = NULL;
DWORD desired_flags = NULL;
if (NETWORK_ALIVE_LAN & *lpdwFlags)
desired_flags |= INTERNET_CONNECTION_LAN;
if (NETWORK_ALIVE_WAN & *lpdwFlags)
desired_flags |= INTERNET_CONNECTION_MODEM;
// TODO: Find out if AOL is registered as a LAN or WAN connection.
// Until then, assume both are okay.
if (NETWORK_ALIVE_AOL & *lpdwFlags)
desired_flags |= INTERNET_CONNECTION_LAN | INTERNET_CONNECTION_MODEM;
BOOL retval = InternetGetConnectedState(&current_flags, 0);
if (retval && (current_flags & desired_flags)) {
bReturnValue = TRUE;
} else {
bReturnValue = FALSE;
}
}
}
return bReturnValue;
}
EXTERN_C __declspec(dllexport) BOOL BOINCIsNetworkAlwaysOnline()
{
DWORD dwFlags = NETWORK_ALIVE_LAN;
return BOINCIsNetworkAlive(&dwFlags);
}
BOOL NetworkTrackerStartup()
{
USES_CONVERSION;
unsigned int i = 0, j = 0;
HRESULT hr = 0;
IBOINCSENSSink* pIBOINCSENSSink = NULL;
CComBSTR bstrPROGID_EventSubscription;
IEventSubscription* pIEventSubscription = NULL;
PSENS_SUBSCRIPTION_GROUP pSubscriptionGroup = NULL;
PSENS_SUBSCRIPTION pSubscription = NULL;
CComBSTR bstrSubscriberCLSID;
CComBSTR bstrSubscriptionID;
CComBSTR bstrSubscriptionName;
CComBSTR bstrMethodName;
// Assign the correct program is value to be used by the event
// registration store.
bstrPROGID_EventSubscription = PROGID_EventSubscription;
// Clear the cache
gpNetworkConnections.clear();
// Try and create some important references to COM objects before
// doing anything else.
//
// IEventSystem
hr = CoCreateInstance(
CLSID_CEventSystem,
NULL,
CLSCTX_SERVER,
IID_IEventSystem,
(LPVOID*)&gpIEventSystem);
if (FAILED(hr))
{
ATLTRACE(TEXT("Error creating event system! (0x%x)"), hr);
return FALSE;
}
// IBOINCSENSSink
hr = CoCreateInstance(
CLSID_CBOINCSENSSink,
NULL,
CLSCTX_SERVER,
IID_IBOINCSENSSink,
(LPVOID*)&pIBOINCSENSSink);
if (FAILED(hr))
{
ATLTRACE(TEXT("Failed to create pIBOINCSENSSink (0x%x)"), hr);
return FALSE;
}
// Prepare for registration by pre-populating the registration
// multidimensional array with the known good stuff.
// Prepare the SENS Network registration group.
gSubscriptionGroups[0].bstrPublisherID = SENSGUID_PUBLISHER;
gSubscriptionGroups[0].bstrEventClassID = SENSGUID_EVENTCLASS_NETWORK;
gSubscriptionGroups[0].bstrInterfaceID = IID_ISensNetwork;
gSubscriptionGroups[0].uiSubscriptionCount = SENS_NETWORK_SUBSCRIPTIONS_COUNT;
gSubscriptionGroups[0].pSubscriptions = (PSENS_SUBSCRIPTION)&gSENSNetworkSubscriptions;
// Prepare the SENS OnNow registration group.
gSubscriptionGroups[1].bstrPublisherID = SENSGUID_PUBLISHER;
gSubscriptionGroups[1].bstrEventClassID = SENSGUID_EVENTCLASS_ONNOW;
gSubscriptionGroups[1].bstrInterfaceID = IID_ISensOnNow;
gSubscriptionGroups[1].uiSubscriptionCount = SENS_ONNOW_SUBSCRIPTIONS_COUNT;
gSubscriptionGroups[1].pSubscriptions = (PSENS_SUBSCRIPTION)&gSENSOnNowSubscriptions;
// Prepare the SENS Logon registration group.
gSubscriptionGroups[2].bstrPublisherID = SENSGUID_PUBLISHER;
gSubscriptionGroups[2].bstrEventClassID = SENSGUID_EVENTCLASS_LOGON;
gSubscriptionGroups[2].bstrInterfaceID = IID_ISensLogon;
gSubscriptionGroups[2].uiSubscriptionCount = SENS_LOGON_SUBSCRIPTIONS_COUNT;
gSubscriptionGroups[2].pSubscriptions = (PSENS_SUBSCRIPTION)&gSENSLogonSubscriptions;
// Start to register the events by walking through the registration groups
//
giSubscriptionGroupCount =
sizeof(gSubscriptionGroups) / sizeof(SENS_SUBSCRIPTION_GROUP);
for (i = 0; i < giSubscriptionGroupCount; i++)
{
pSubscriptionGroup = &gSubscriptionGroups[i];
for (j = 0; j < pSubscriptionGroup->uiSubscriptionCount; j++)
{
pSubscription = &pSubscriptionGroup->pSubscriptions[j];
// Get a new IEventSubscription object.
hr = CoCreateInstance(
CLSID_CEventSubscription,
NULL,
CLSCTX_SERVER,
IID_IEventSubscription,
(LPVOID*) &pIEventSubscription);
if (FAILED(hr))
{
ATLTRACE(TEXT("Error getting IEventSubscription object (0x%x)"), hr);
return FALSE;
}
bstrSubscriptionID = *pSubscription->pSubscriptionID;
hr = pIEventSubscription->put_SubscriptionID(bstrSubscriptionID);
if (FAILED(hr))
{
ATLTRACE(TEXT("pIEventSubscription->put_SubscriptionID (0x%x)"), hr);
return FALSE;
}
bstrSubscriptionName = pSubscription->strSubscriptionName;
hr = pIEventSubscription->put_SubscriptionName(bstrSubscriptionName);
if (FAILED(hr))
{
ATLTRACE(TEXT("pIEventSubscription->put_SubscriptionName (0x%x)"), hr);
return FALSE;
}
bstrMethodName = pSubscription->strMethodName;
hr = pIEventSubscription->put_MethodName(bstrMethodName);
if (FAILED(hr))
{
ATLTRACE(TEXT("pIEventSubscription->put_MethodName (0x%x)"), hr);
return FALSE;
}
hr = pIEventSubscription->put_EventClassID(pSubscriptionGroup->bstrEventClassID);
if (FAILED(hr))
{
ATLTRACE(TEXT("pIEventSubscription->put_EventClassID (0x%x)"), hr);
return FALSE;
}
hr = pIEventSubscription->put_SubscriberInterface(pIBOINCSENSSink);
if (FAILED(hr))
{
ATLTRACE(TEXT("pIEventSubscription->put_SubscriberInterface (0x%x)"), hr);
return FALSE;
}
// Initialize it.
hr = gpIEventSystem->Store(
bstrPROGID_EventSubscription,
pIEventSubscription);
if (FAILED(hr))
{
ATLTRACE(TEXT("gpIEventSystem->Store (0x%x)"), hr);
return FALSE;
}
pIEventSubscription->Release();
pIEventSubscription = NULL;
}
}
if (pIEventSubscription != NULL)
pIEventSubscription->Release();
if (pIBOINCSENSSink != NULL)
pIBOINCSENSSink->Release();
return TRUE;
}
void NetworkTrackerShutdown()
{
USES_CONVERSION;
unsigned int i = 0, j = 0;
HRESULT hr = 0;
int errorIndex = 0;
CComBSTR bstrQuery;
PSENS_SUBSCRIPTION_GROUP pSubscriptionGroup = NULL;
PSENS_SUBSCRIPTION pSubscription = NULL;
for (i = 0; i < giSubscriptionGroupCount; i++)
{
pSubscriptionGroup = &gSubscriptionGroups[i];
for (j = 0; j < pSubscriptionGroup->uiSubscriptionCount; j++)
{
pSubscription = &pSubscriptionGroup->pSubscriptions[j];
bstrQuery.Empty();
bstrQuery = TEXT("SubscriptionID=");
bstrQuery += *pSubscription->pSubscriptionID;
hr = gpIEventSystem->Remove(
PROGID_EventSubscription,
bstrQuery,
&errorIndex);
if (FAILED(hr))
{
ATLTRACE(TEXT("gpIEventSystem->Remove (0x%x)"), hr);
}
}
}
// Clear the cache
for (i=0; i<gpNetworkConnections.size(); i++) {
delete gpNetworkConnections[i];
}
gpNetworkConnections.clear();
}
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