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/*
 * evolution-windows-sens.c
 *
 * This program 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 of the License, or (at your option) version 3.
 *
 * This program 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.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 */

#ifdef __cplusplus
#error This file cannot be built with C++ compiler
#endif

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#define INITGUID
#include <windows.h>
#include <rpc.h>

#ifdef HAVE_EVENTSYS_H
#include <eventsys.h>
#else

/* Extract relevant typedefs from mingw-w64 headers */

typedef struct IEnumEventObject IEnumEventObject;

const IID IID_IEnumEventObject;
typedef struct IEnumEventObjectVtbl {
    BEGIN_INTERFACE
        HRESULT (WINAPI *QueryInterface)(IEnumEventObject *This,REFIID riid,PVOID *ppvObject);
        ULONG (WINAPI *AddRef)(IEnumEventObject *This);
        ULONG (WINAPI *Release)(IEnumEventObject *This);
        HRESULT (WINAPI *Clone)(IEnumEventObject *This,IEnumEventObject **ppInterface);
        HRESULT (WINAPI *Next)(IEnumEventObject *This,ULONG cReqElem,IUnknown **ppInterface,ULONG *cRetElem);
        HRESULT (WINAPI *Reset)(IEnumEventObject *This);
        HRESULT (WINAPI *Skip)(IEnumEventObject *This,ULONG cSkipElem);
    END_INTERFACE
} IEnumEventObjectVtbl;
struct IEnumEventObject {
    CONST_VTBL struct IEnumEventObjectVtbl *lpVtbl;
};

typedef struct IEventObjectCollection IEventObjectCollection;

const IID IID_IEventObjectCollection;
typedef struct IEventObjectCollectionVtbl {
    BEGIN_INTERFACE
        HRESULT (WINAPI *QueryInterface)(IEventObjectCollection *This,REFIID riid,PVOID *ppvObject);
        ULONG (WINAPI *AddRef)(IEventObjectCollection *This);
        ULONG (WINAPI *Release)(IEventObjectCollection *This);
        HRESULT (WINAPI *GetTypeInfoCount)(IEventObjectCollection *This,UINT *pctinfo);
        HRESULT (WINAPI *GetTypeInfo)(IEventObjectCollection *This,UINT iTInfo,LCID lcid,ITypeInfo **ppTInfo);
        HRESULT (WINAPI *GetIDsOfNames)(IEventObjectCollection *This,REFIID riid,LPOLESTR *rgszNames,UINT cNames,LCID lcid,DISPID *rgDispId);
        HRESULT (WINAPI *Invoke)(IEventObjectCollection *This,DISPID dispIdMember,REFIID riid,LCID lcid,WORD wFlags,DISPPARAMS *pDispParams,VARIANT *pVarResult,EXCEPINFO *pExcepInfo,UINT *puArgErr);
        HRESULT (WINAPI *get__NewEnum)(IEventObjectCollection *This,IUnknown **ppUnkEnum);
        HRESULT (WINAPI *get_Item)(IEventObjectCollection *This,BSTR objectID,VARIANT *pItem);
        HRESULT (WINAPI *get_NewEnum)(IEventObjectCollection *This,IEnumEventObject **ppEnum);
        HRESULT (WINAPI *get_Count)(IEventObjectCollection *This,long *pCount);
        HRESULT (WINAPI *Add)(IEventObjectCollection *This,VARIANT *item,BSTR objectID);
        HRESULT (WINAPI *Remove)(IEventObjectCollection *This,BSTR objectID);
    END_INTERFACE
} IEventObjectCollectionVtbl;
struct IEventObjectCollection {
    CONST_VTBL struct IEventObjectCollectionVtbl *lpVtbl;
};

typedef struct IEventSystem IEventSystem;

const IID IID_IEventSystem;
typedef struct IEventSystemVtbl {
    BEGIN_INTERFACE
        HRESULT (WINAPI *QueryInterface)(IEventSystem *This,REFIID riid,PVOID *ppvObject);
        ULONG (WINAPI *AddRef)(IEventSystem *This);
        ULONG (WINAPI *Release)(IEventSystem *This);
        HRESULT (WINAPI *GetTypeInfoCount)(IEventSystem *This,UINT *pctinfo);
        HRESULT (WINAPI *GetTypeInfo)(IEventSystem *This,UINT iTInfo,LCID lcid,ITypeInfo **ppTInfo);
        HRESULT (WINAPI *GetIDsOfNames)(IEventSystem *This,REFIID riid,LPOLESTR *rgszNames,UINT cNames,LCID lcid,DISPID *rgDispId);
        HRESULT (WINAPI *Invoke)(IEventSystem *This,DISPID dispIdMember,REFIID riid,LCID lcid,WORD wFlags,DISPPARAMS *pDispParams,VARIANT *pVarResult,EXCEPINFO *pExcepInfo,UINT *puArgErr);
        HRESULT (WINAPI *Query)(IEventSystem *This,BSTR progID,BSTR queryCriteria,int *errorIndex,IUnknown **ppInterface);
        HRESULT (WINAPI *Store)(IEventSystem *This,BSTR ProgID,IUnknown *pInterface);
        HRESULT (WINAPI *Remove)(IEventSystem *This,BSTR progID,BSTR queryCriteria,int *errorIndex);
        HRESULT (WINAPI *get_EventObjectChangeEventClassID)(IEventSystem *This,BSTR *pbstrEventClassID);
        HRESULT (WINAPI *QueryS)(IEventSystem *This,BSTR progID,BSTR queryCriteria,IUnknown **ppInterface);
        HRESULT (WINAPI *RemoveS)(IEventSystem *This,BSTR progID,BSTR queryCriteria);
    END_INTERFACE
} IEventSystemVtbl;
struct IEventSystem {
    CONST_VTBL struct IEventSystemVtbl *lpVtbl;
};

typedef struct IEventSubscription IEventSubscription;

const IID IID_IEventSubscription;
typedef struct IEventSubscriptionVtbl {
    BEGIN_INTERFACE
        HRESULT (WINAPI *QueryInterface)(IEventSubscription *This,REFIID riid,PVOID *ppvObject);
        ULONG (WINAPI *AddRef)(IEventSubscription *This);
        ULONG (WINAPI *Release)(IEventSubscription *This);
        HRESULT (WINAPI *GetTypeInfoCount)(IEventSubscription *This,UINT *pctinfo);
        HRESULT (WINAPI *GetTypeInfo)(IEventSubscription *This,UINT iTInfo,LCID lcid,ITypeInfo **ppTInfo);
        HRESULT (WINAPI *GetIDsOfNames)(IEventSubscription *This,REFIID riid,LPOLESTR *rgszNames,UINT cNames,LCID lcid,DISPID *rgDispId);
        HRESULT (WINAPI *Invoke)(IEventSubscription *This,DISPID dispIdMember,REFIID riid,LCID lcid,WORD wFlags,DISPPARAMS *pDispParams,VARIANT *pVarResult,EXCEPINFO *pExcepInfo,UINT *puArgErr);
        HRESULT (WINAPI *get_SubscriptionID)(IEventSubscription *This,BSTR *pbstrSubscriptionID);
        HRESULT (WINAPI *put_SubscriptionID)(IEventSubscription *This,BSTR bstrSubscriptionID);
        HRESULT (WINAPI *get_SubscriptionName)(IEventSubscription *This,BSTR *pbstrSubscriptionName);
        HRESULT (WINAPI *put_SubscriptionName)(IEventSubscription *This,BSTR bstrSubscriptionName);
        HRESULT (WINAPI *get_PublisherID)(IEventSubscription *This,BSTR *pbstrPublisherID);
        HRESULT (WINAPI *put_PublisherID)(IEventSubscription *This,BSTR bstrPublisherID);
        HRESULT (WINAPI *get_EventClassID)(IEventSubscription *This,BSTR *pbstrEventClassID);
        HRESULT (WINAPI *put_EventClassID)(IEventSubscription *This,BSTR bstrEventClassID);
        HRESULT (WINAPI *get_MethodName)(IEventSubscription *This,BSTR *pbstrMethodName);
        HRESULT (WINAPI *put_MethodName)(IEventSubscription *This,BSTR bstrMethodName);
        HRESULT (WINAPI *get_SubscriberCLSID)(IEventSubscription *This,BSTR *pbstrSubscriberCLSID);
        HRESULT (WINAPI *put_SubscriberCLSID)(IEventSubscription *This,BSTR bstrSubscriberCLSID);
        HRESULT (WINAPI *get_SubscriberInterface)(IEventSubscription *This,IUnknown **ppSubscriberInterface);
        HRESULT (WINAPI *put_SubscriberInterface)(IEventSubscription *This,IUnknown *pSubscriberInterface);
        HRESULT (WINAPI *get_PerUser)(IEventSubscription *This,WINBOOL *pfPerUser);
        HRESULT (WINAPI *put_PerUser)(IEventSubscription *This,WINBOOL fPerUser);
        HRESULT (WINAPI *get_OwnerSID)(IEventSubscription *This,BSTR *pbstrOwnerSID);
        HRESULT (WINAPI *put_OwnerSID)(IEventSubscription *This,BSTR bstrOwnerSID);
        HRESULT (WINAPI *get_Enabled)(IEventSubscription *This,WINBOOL *pfEnabled);
        HRESULT (WINAPI *put_Enabled)(IEventSubscription *This,WINBOOL fEnabled);
        HRESULT (WINAPI *get_Description)(IEventSubscription *This,BSTR *pbstrDescription);
        HRESULT (WINAPI *put_Description)(IEventSubscription *This,BSTR bstrDescription);
        HRESULT (WINAPI *get_MachineName)(IEventSubscription *This,BSTR *pbstrMachineName);
        HRESULT (WINAPI *put_MachineName)(IEventSubscription *This,BSTR bstrMachineName);
        HRESULT (WINAPI *GetPublisherProperty)(IEventSubscription *This,BSTR bstrPropertyName,VARIANT *propertyValue);
        HRESULT (WINAPI *PutPublisherProperty)(IEventSubscription *This,BSTR bstrPropertyName,VARIANT *propertyValue);
        HRESULT (WINAPI *RemovePublisherProperty)(IEventSubscription *This,BSTR bstrPropertyName);
        HRESULT (WINAPI *GetPublisherPropertyCollection)(IEventSubscription *This,IEventObjectCollection **collection);
        HRESULT (WINAPI *GetSubscriberProperty)(IEventSubscription *This,BSTR bstrPropertyName,VARIANT *propertyValue);
        HRESULT (WINAPI *PutSubscriberProperty)(IEventSubscription *This,BSTR bstrPropertyName,VARIANT *propertyValue);
        HRESULT (WINAPI *RemoveSubscriberProperty)(IEventSubscription *This,BSTR bstrPropertyName);
        HRESULT (WINAPI *GetSubscriberPropertyCollection)(IEventSubscription *This,IEventObjectCollection **collection);
        HRESULT (WINAPI *get_InterfaceID)(IEventSubscription *This,BSTR *pbstrInterfaceID);
        HRESULT (WINAPI *put_InterfaceID)(IEventSubscription *This,BSTR bstrInterfaceID);
    END_INTERFACE
} IEventSubscriptionVtbl;
struct IEventSubscription {
    CONST_VTBL struct IEventSubscriptionVtbl *lpVtbl;
};

#define PROGID_EventSubscription OLESTR("EventSystem.EventSubscription")

#endif

#ifdef HAVE_SENSEVTS_H
#include <sensevts.h>
#else

/* Extract relevant typedefs from mingw-w64 headers */

typedef struct {
    DWORD dwSize;
    DWORD dwFlags;
    DWORD dwOutSpeed;
    DWORD dwInSpeed;
} *LPSENS_QOCINFO;

typedef struct ISensNetwork ISensNetwork;

const IID IID_ISensNetwork;
typedef struct ISensNetworkVtbl {
    BEGIN_INTERFACE
        HRESULT (WINAPI *QueryInterface)(ISensNetwork *This,REFIID riid,PVOID *ppvObject);
        ULONG (WINAPI *AddRef)(ISensNetwork *This);
        ULONG (WINAPI *Release)(ISensNetwork *This);
        HRESULT (WINAPI *GetTypeInfoCount)(ISensNetwork *This,UINT *pctinfo);
        HRESULT (WINAPI *GetTypeInfo)(ISensNetwork *This,UINT iTInfo,LCID lcid,ITypeInfo **ppTInfo);
        HRESULT (WINAPI *GetIDsOfNames)(ISensNetwork *This,REFIID riid,LPOLESTR *rgszNames,UINT cNames,LCID lcid,DISPID *rgDispId);
        HRESULT (WINAPI *Invoke)(ISensNetwork *This,DISPID dispIdMember,REFIID riid,LCID lcid,WORD wFlags,DISPPARAMS *pDispParams,VARIANT *pVarResult,EXCEPINFO *pExcepInfo,UINT *puArgErr);
        HRESULT (WINAPI *ConnectionMade)(ISensNetwork *This,BSTR bstrConnection,ULONG ulType,LPSENS_QOCINFO lpQOCInfo);
        HRESULT (WINAPI *ConnectionMadeNoQOCInfo)(ISensNetwork *This,BSTR bstrConnection,ULONG ulType);
        HRESULT (WINAPI *ConnectionLost)(ISensNetwork *This,BSTR bstrConnection,ULONG ulType);
        HRESULT (WINAPI *DestinationReachable)(ISensNetwork *This,BSTR bstrDestination,BSTR bstrConnection,ULONG ulType,LPSENS_QOCINFO lpQOCInfo);
        HRESULT (WINAPI *DestinationReachableNoQOCInfo)(ISensNetwork *This,BSTR bstrDestination,BSTR bstrConnection,ULONG ulType);
    END_INTERFACE
} ISensNetworkVtbl;
struct ISensNetwork {
    CONST_VTBL struct ISensNetworkVtbl *lpVtbl;
};

#endif

#include <shell/e-shell.h>
#include <e-util/e-extension.h>

/* 4E14FB9F-2E22-11D1-9964-00C04FBBB345 */
DEFINE_GUID(IID_IEventSystem, 0x4E14FB9F, 0x2E22, 0x11D1, 0x99, 0x64, 0x00, 0xC0, 0x4F, 0xBB, 0xB3, 0x45);

/* 4A6B0E15-2E38-11D1-9965-00C04FBBB345 */
DEFINE_GUID(IID_IEventSubscription, 0x4A6B0E15, 0x2E38, 0x11D1, 0x99, 0x65, 0x00, 0xC0, 0x4F, 0xBB, 0xB3, 0x45);

/* d597bab1-5b9f-11d1-8dd2-00aa004abd5e */
DEFINE_GUID(IID_ISensNetwork, 0xd597bab1, 0x5b9f, 0x11d1, 0x8d, 0xd2, 0x00, 0xaa, 0x00, 0x4a, 0xbd, 0x5e);

/* 4E14FBA2-2E22-11D1-9964-00C04FBBB345 */
DEFINE_GUID(CLSID_CEventSystem, 0x4E14FBA2, 0x2E22, 0x11D1, 0x99, 0x64, 0x00, 0xC0, 0x4F, 0xBB, 0xB3, 0x45);

/* 7542e960-79c7-11d1-88f9-0080c7d771bf */
DEFINE_GUID(CLSID_CEventSubscription, 0x7542e960, 0x79c7, 0x11d1, 0x88, 0xf9, 0x00, 0x80, 0xc7, 0xd7, 0x71, 0xbf);

/* Standard GObject macros */
#define E_TYPE_WINDOWS_SENS \
    (e_windows_sens_get_type ())
#define E_WINDOWS_SENS(obj) \
    (G_TYPE_CHECK_INSTANCE_CAST \
    ((obj), E_TYPE_WINDOWS_SENS, EWindowsSENS))

typedef struct _EWindowsSENS EWindowsSENS;
typedef struct _EWindowsSENSClass EWindowsSENSClass;

struct _EWindowsSENS {
    EExtension parent;
};

struct _EWindowsSENSClass {
    EExtensionClass parent_class;
};

/* Module Entry Points */
void e_module_load (GTypeModule *type_module);
void e_module_unload (GTypeModule *type_module);

/* Forward Declarations */
GType e_windows_sens_get_type (void);

G_DEFINE_DYNAMIC_TYPE (EWindowsSENS, e_windows_sens, E_TYPE_EXTENSION)

static EShell *
windows_sens_get_shell (EWindowsSENS *extension)
{
    EExtensible *extensible;

    extensible = e_extension_get_extensible (E_EXTENSION (extension));

    return E_SHELL (extensible);
}

/* Object to receive the ISensNetwork events */

typedef struct ESensNetworkListener {
    ISensNetworkVtbl *lpVtbl;
    long ref;
    EWindowsSENS *ews_ptr;
} ESensNetworkListener;

static void e_sens_network_listener_init(ESensNetworkListener**,EWindowsSENS*);

/* Functions to implement ISensNetwork interface */

static HRESULT WINAPI e_sens_network_listener_queryinterface (ISensNetwork*,REFIID,PVOID *);
static ULONG WINAPI e_sens_network_listener_addref (ISensNetwork*);
static ULONG WINAPI e_sens_network_listener_release (ISensNetwork*);
static HRESULT WINAPI e_sens_network_listener_gettypeinfocount (ISensNetwork*, UINT*);
static HRESULT WINAPI e_sens_network_listener_gettypeinfo (ISensNetwork*,UINT,LCID,ITypeInfo**);
static HRESULT WINAPI e_sens_network_listener_getidsofnames (ISensNetwork*,REFIID,LPOLESTR*,UINT,LCID, DISPID*);
static HRESULT WINAPI e_sens_network_listener_invoke (ISensNetwork*,DISPID,REFIID,LCID,WORD,DISPPARAMS*,VARIANT*,EXCEPINFO*,UINT*);
static HRESULT WINAPI e_sens_network_listener_connectionmade (ISensNetwork*,BSTR,ULONG,LPSENS_QOCINFO);
static HRESULT WINAPI e_sens_network_listener_connectionmadenoqocinfo (ISensNetwork*,BSTR,ULONG);
static HRESULT WINAPI e_sens_network_listener_connectionlost (ISensNetwork*,BSTR,ULONG);
static HRESULT WINAPI e_sens_network_listener_destinationreachable (ISensNetwork*,BSTR,BSTR,ULONG,LPSENS_QOCINFO);
static HRESULT WINAPI e_sens_network_listener_destinationreachablenoqocinfo (ISensNetwork*,BSTR,BSTR,ULONG);

/* Initializing the VTable of our ESensNetworkListener object */

static ISensNetworkVtbl ESensNetworkListenerVtbl = {
    e_sens_network_listener_queryinterface,
    e_sens_network_listener_addref,
    e_sens_network_listener_release,
    e_sens_network_listener_gettypeinfocount,
    e_sens_network_listener_gettypeinfo,
    e_sens_network_listener_getidsofnames,
    e_sens_network_listener_invoke,
    e_sens_network_listener_connectionmade,
    e_sens_network_listener_connectionmadenoqocinfo,
    e_sens_network_listener_connectionlost,
    e_sens_network_listener_destinationreachable,
    e_sens_network_listener_destinationreachablenoqocinfo
};

static HRESULT WINAPI
e_sens_network_listener_queryinterface (ISensNetwork *This,
                                        REFIID        iid,
                                        void        **ppv)
{
    if (IsEqualIID (iid, &IID_IUnknown) || IsEqualIID (iid, &IID_IDispatch) || IsEqualIID (iid, &IID_ISensNetwork)) {
        *ppv = This;
        ((LPUNKNOWN)*ppv)->lpVtbl->AddRef((LPUNKNOWN)*ppv);
        return S_OK;
    }
    *ppv = NULL;
    return E_NOINTERFACE;
}

static ULONG WINAPI
e_sens_network_listener_addref (ISensNetwork *This)
{
    ESensNetworkListener *esnl_ptr=(ESensNetworkListener*)This;
    return InterlockedIncrement(&(esnl_ptr->ref));
}

static ULONG WINAPI
e_sens_network_listener_release (ISensNetwork *This)
{
    ESensNetworkListener *esnl_ptr=(ESensNetworkListener*)This;
    ULONG tmp = InterlockedDecrement(&(esnl_ptr->ref));
    return tmp;
}

static HRESULT WINAPI
e_sens_network_listener_gettypeinfocount (ISensNetwork *This,
                                          UINT         *pctinfo)
{
    return E_NOTIMPL;
}

static HRESULT WINAPI
e_sens_network_listener_gettypeinfo (ISensNetwork *This,
                                     UINT          iTInfo,
                                     LCID          lcid,
                                     ITypeInfo   **ppTInfo)
{
    return E_NOTIMPL;
}

static HRESULT WINAPI
e_sens_network_listener_getidsofnames (ISensNetwork *This,
                                       REFIID        riid,
                                       LPOLESTR     *rgszNames,
                                       UINT          cNames,
                                       LCID          lcid,
                                       DISPID       *rgDispId)
{
    return E_NOTIMPL;
}

static HRESULT WINAPI
e_sens_network_listener_invoke (ISensNetwork *This,
                                DISPID        dispIdMember,
                                REFIID        riid,
                                LCID          lcid,
                                WORD          wFlags,
                                DISPPARAMS   *pDispParams,
                                VARIANT      *pVarResult,
                                EXCEPINFO    *pExcepInfo,
                                UINT         *puArgErr)
{
    return E_NOTIMPL;
}

static HRESULT WINAPI
e_sens_network_listener_connectionmade (ISensNetwork  *This,
                                        BSTR           bstrConnection,
                                        ULONG          ulType,
                                        LPSENS_QOCINFO lpQOCInfo)
{
    if (ulType) {
        ESensNetworkListener *esnl_ptr=(ESensNetworkListener*)This;
        EShell *shell = windows_sens_get_shell (esnl_ptr->ews_ptr);
        /* Wait a second so that the connection stabilizes */
        g_usleep(G_USEC_PER_SEC);
        e_shell_set_network_available (shell, TRUE);
    }
    return S_OK;
}

static HRESULT WINAPI
e_sens_network_listener_connectionmadenoqocinfo (ISensNetwork *This,
                                                 BSTR          bstrConnection,
                                                 ULONG         ulType)
{
    //Always followed by ConnectionMade
    return S_OK;
}

static HRESULT WINAPI
e_sens_network_listener_connectionlost (ISensNetwork *This,
                                        BSTR          bstrConnection,
                                        ULONG         ulType)
{
    if (ulType) {
        ESensNetworkListener *esnl_ptr=(ESensNetworkListener*)This;
        EShell *shell = windows_sens_get_shell (esnl_ptr->ews_ptr);
        e_shell_set_network_available (shell, FALSE);
    }
    return S_OK;
}

static HRESULT WINAPI
e_sens_network_listener_destinationreachable (ISensNetwork  *This,
                                              BSTR           bstrDestination,
                                              BSTR           bstrConnection,
                                              ULONG          ulType,
                                              LPSENS_QOCINFO lpQOCInfo)
{
    if (ulType) {
        ESensNetworkListener *esnl_ptr=(ESensNetworkListener*)This;
        EShell *shell = windows_sens_get_shell (esnl_ptr->ews_ptr);
        /* Wait a second so that the connection stabilizes */
        g_usleep(G_USEC_PER_SEC);
        e_shell_set_network_available (shell, TRUE);
    }
    return S_OK;
}

static HRESULT WINAPI
e_sens_network_listener_destinationreachablenoqocinfo (ISensNetwork *This,
                                                       BSTR          bstrDestination,
                                                       BSTR          bstrConnection,
                                                       ULONG         ulType)
{
    return S_OK;
}

static void
e_sens_network_listener_init(ESensNetworkListener **esnl_ptr,
                             EWindowsSENS          *ews)
{
    (*esnl_ptr) = g_new0(ESensNetworkListener,1);
    (*esnl_ptr)->lpVtbl = &ESensNetworkListenerVtbl;
    (*esnl_ptr)->ews_ptr = ews;
    (*esnl_ptr)->ref = 1;
}

static BSTR
_mb2wchar (const gchar * a)
{
    static WCHAR b[64];
    MultiByteToWideChar (0, 0, a, -1, b, 64);
    return b;
}

static const gchar * add_curly_braces_to_uuid (const gchar * string_uuid)
{
    static gchar curly_braced_uuid_string[64];
    gint i;
    if (!string_uuid)
        return NULL;
    lstrcpy(curly_braced_uuid_string,"{");
    i = strlen(curly_braced_uuid_string);
    lstrcat(curly_braced_uuid_string+i,string_uuid);
    i = strlen(curly_braced_uuid_string);
    lstrcat(curly_braced_uuid_string+i,"}");
    return curly_braced_uuid_string;
}

static void
windows_sens_constructed (GObject *object)
{
    HRESULT res;
    static IEventSystem *pEventSystem =0;
    static IEventSubscription* pEventSubscription = 0;
    static ESensNetworkListener *pESensNetworkListener = 0;
    static const gchar * eventclassid="{D5978620-5B9F-11D1-8DD2-00AA004ABD5E}";
    static const gchar * methods[]={
        "ConnectionMade",
        "ConnectionMadeNoQOCInfo",
        "ConnectionLost",
        "DestinationReachable",
        "DestinationReachableNoQOCInfo"
    };
    static const gchar * names[]={
        "EWS_ConnectionMade",
        "EWS_ConnectionMadeNoQOCInfo",
        "EWS_ConnectionLost",
        "EWS_DestinationReachable",
        "EWS_DestinationReachableNoQOCInfo"
    };
    guchar * subids[] = { 0, 0, 0, 0, 0 };

    EWindowsSENS *extension = (E_WINDOWS_SENS (object));
    e_sens_network_listener_init(&pESensNetworkListener, extension);

    CoInitialize(0);

    res=CoCreateInstance (&CLSID_CEventSystem, 0,CLSCTX_SERVER,&IID_IEventSystem,(LPVOID*)&pEventSystem);

    if (res == S_OK && pEventSystem) {

        unsigned i;

        for (i=0; i<G_N_ELEMENTS(methods); i++) {

            res=CoCreateInstance (&CLSID_CEventSubscription, 0, CLSCTX_SERVER, &IID_IEventSubscription, (LPVOID*)&pEventSubscription);

            if (res == S_OK && pEventSubscription) {
                UUID tmp_uuid;
                UuidCreate(&tmp_uuid);
                UuidToString(&tmp_uuid, &subids[i]);
                res=pEventSubscription->lpVtbl->put_SubscriptionID (pEventSubscription, _mb2wchar (add_curly_braces_to_uuid ((gchar *)subids[i])));
                if (res) {
                    RpcStringFree (&subids[i]);
                    break;
                }
                RpcStringFree (&subids[i]);
                res=pEventSubscription->lpVtbl->put_SubscriptionName (pEventSubscription, _mb2wchar (names[i]));
                if (res)
                    break;
                res=pEventSubscription->lpVtbl->put_MethodName (pEventSubscription, _mb2wchar (methods[i]));
                if (res)
                    break;
                res=pEventSubscription->lpVtbl->put_EventClassID (pEventSubscription, _mb2wchar (eventclassid));
                if (res)
                    break;
                res=pEventSubscription->lpVtbl->put_SubscriberInterface (pEventSubscription, (IUnknown*)pESensNetworkListener);
                if (res)
                    break;
                /* Make the subscription receive the event only if the owner of the subscription
                 * is logged on to the same computer as the publisher. This makes this module
                 * work with normal user account without administrative privileges.
                 */
                res=pEventSubscription->lpVtbl->put_PerUser (pEventSubscription, TRUE);
                if (res)
                    break;

                res=pEventSystem->lpVtbl->Store (pEventSystem, (BSTR)PROGID_EventSubscription, (IUnknown*)pEventSubscription);
                if (res)
                    break;
                pEventSubscription->lpVtbl->Release (pEventSubscription);
                pEventSubscription=0;
            }
        }
        if (pEventSubscription)
            pEventSubscription->lpVtbl->Release(pEventSubscription);
    }

    /* Do not try to get initial state when we are sure we will not get system events.
     * Like that we don't get stuck with Disconnected status if we were disconnected
     * on start.
     */
    if (res == S_OK) {

        typedef BOOL (WINAPI* IsNetworkAlive_t) (LPDWORD);
        BOOL alive = TRUE;
        EShell *shell = windows_sens_get_shell (extension);

        IsNetworkAlive_t pIsNetworkAlive = NULL;

        HMODULE hDLL=LoadLibrary ("sensapi.dll");

        if ((pIsNetworkAlive=(IsNetworkAlive_t) GetProcAddress (hDLL, "IsNetworkAlive"))) {
            DWORD Network;
            alive=pIsNetworkAlive (&Network);
        }

        FreeLibrary(hDLL);

        e_shell_set_network_available (shell, alive);
    }
}

static void
e_windows_sens_class_init (EWindowsSENSClass *_class)
{
    GObjectClass *object_class;
    EExtensionClass *extension_class;

    object_class = G_OBJECT_CLASS (_class);
    object_class->constructed = windows_sens_constructed;

    extension_class = E_EXTENSION_CLASS (_class);
    extension_class->extensible_type = E_TYPE_SHELL;
}

static void
e_windows_sens_class_finalize (EWindowsSENSClass *_class)
{
}

static void
e_windows_sens_init (EWindowsSENS *extension)
{
}

G_MODULE_EXPORT void
e_module_load (GTypeModule *type_module)
{
    e_windows_sens_register_type (type_module);
}

G_MODULE_EXPORT void
e_module_unload (GTypeModule *type_module)
{
}