Initial publish

1 files changed, 249 insertions, 0 deletions

diff --git a/wpd/WpdHelloWorldDriver/WpdBaseDriver.cpp b/wpd/WpdHelloWorldDriver/WpdBaseDriver.cpp
new file mode 100644
index 00000000..6d00fc8f
--- /dev/null
+++ b/wpd/WpdHelloWorldDriver/WpdBaseDriver.cpp
@@ -0,0 +1,249 @@
+#include "stdafx.h"
+#include "WpdBaseDriver.tmh"
+
+WpdBaseDriver::WpdBaseDriver() :
+    m_cRef(1)
+{
+}
+
+WpdBaseDriver::~WpdBaseDriver()
+{
+
+}
+
+ULONG __stdcall WpdBaseDriver::AddRef()
+{
+    InterlockedIncrement((long*) &m_cRef);
+    return m_cRef;
+}
+
+_At_(this, __drv_freesMem(Mem)) 
+ULONG __stdcall WpdBaseDriver::Release()
+{
+    ULONG ulRefCount = m_cRef - 1;
+
+    if (InterlockedDecrement((long*) &m_cRef) == 0)
+    {
+        delete this;
+        return 0;
+    }
+    return ulRefCount;
+}
+
+HRESULT __stdcall WpdBaseDriver::QueryInterface(
+    REFIID riid,
+    void** ppv)
+{
+    HRESULT hr = S_OK;
+
+    if(riid == IID_IUnknown)
+    {
+        *ppv = static_cast<IUnknown*>(this);
+        AddRef();
+    }
+    else
+    {
+        *ppv = NULL;
+        hr = E_NOINTERFACE;
+    }
+    return hr;
+}
+
+HRESULT WpdBaseDriver::DispatchWpdMessage(_In_ IPortableDeviceValues* pParams,
+                                          _In_ IPortableDeviceValues* pResults)
+{
+    HRESULT     hr                  = S_OK;
+    GUID        guidCommandCategory = {0};
+    DWORD       dwCommandID         = 0;
+    PROPERTYKEY CommandKey          = WPD_PROPERTY_NULL;
+
+    if (hr == S_OK)
+    {
+        hr = pParams->GetGuidValue(WPD_PROPERTY_COMMON_COMMAND_CATEGORY, &guidCommandCategory);
+        CHECK_HR(hr, "Failed to get WPD_PROPERTY_COMMON_COMMAND_CATEGORY from input parameters");
+    }
+
+    if (hr == S_OK)
+    {
+        hr = pParams->GetUnsignedIntegerValue(WPD_PROPERTY_COMMON_COMMAND_ID, &dwCommandID);
+        CHECK_HR(hr, "Failed to get WPD_PROPERTY_COMMON_COMMAND_ID from input parameters");
+    }
+
+    // If WPD_PROPERTY_COMMON_COMMAND_CATEGORY or WPD_PROPERTY_COMMON_COMMAND_ID could not be extracted
+    // properly then we should return E_INVALIDARG to the client.
+    if (FAILED(hr))
+    {
+        hr = E_INVALIDARG;
+        CHECK_HR(hr, "Failed to get WPD_PROPERTY_COMMON_COMMAND_CATEGORY or WPD_PROPERTY_COMMON_COMMAND_ID from input parameters");
+    }
+
+    if (hr == S_OK)
+    {
+        CommandKey.fmtid = guidCommandCategory;
+        CommandKey.pid   = dwCommandID;
+
+        if (CommandKey.fmtid == WPD_CATEGORY_OBJECT_ENUMERATION)
+        {
+            hr = m_ObjectEnum.DispatchWpdMessage(CommandKey, pParams, pResults);
+        }
+        else if (CommandKey.fmtid == WPD_CATEGORY_OBJECT_PROPERTIES)
+        {
+            hr = m_ObjectProperties.DispatchWpdMessage(CommandKey, pParams, pResults);
+        }
+        else if (CommandKey.fmtid == WPD_CATEGORY_OBJECT_RESOURCES)
+        {
+            hr = m_ObjectResources.DispatchWpdMessage(CommandKey, pParams, pResults);
+        }
+        else if (CommandKey.fmtid == WPD_CATEGORY_CAPABILITIES)
+        {
+            hr = m_Capabilities.DispatchWpdMessage(CommandKey, pParams, pResults);
+        }
+        else if (IsEqualPropertyKey(CommandKey, WPD_COMMAND_COMMON_GET_OBJECT_IDS_FROM_PERSISTENT_UNIQUE_IDS))
+        {
+            hr = OnGetObjectIDsFromPersistentUniqueIDs(pParams, pResults);
+        }
+        else
+        {
+            hr = E_NOTIMPL;
+            CHECK_HR(hr, "Unknown command %ws.%d received",CComBSTR(CommandKey.fmtid), CommandKey.pid);
+        }
+    }
+
+    HRESULT hrTemp = pResults->SetErrorValue(WPD_PROPERTY_COMMON_HRESULT, hr);
+    CHECK_HR(hrTemp, ("Failed to set WPD_PROPERTY_COMMON_HRESULT"));
+
+    // Set to a success code, to indicate that the message was received.
+    // the return code for the actual command's results is stored in the
+    // WPD_PROPERTY_COMMON_HRESULT property.
+    hr = S_OK;
+
+    return hr;
+}
+
+/**
+ * This method is called to initialize the driver object.
+ * This is where the driver would set up it's I/O libraries
+ * and so on.
+ */
+HRESULT WpdBaseDriver::Initialize()
+{
+    return S_OK;
+}
+
+/**
+ * This method is called to uninitialize the driver object.
+ * In a real driver, this is where the driver would clean up
+ * any resources held by this driver.
+ */
+VOID WpdBaseDriver::Uninitialize()
+{
+}
+
+/**
+ *  This method is called when we receive a WPD_COMMAND_COMMON_GET_OBJECT_IDS_FROM_PERSISTENT_UNIQUE_IDS
+ *  command.
+ *
+ *  The parameters sent to us are:
+ *  - WPD_PROPERTY_COMMON_PERSISTENT_UNIQUE_IDS: Contains an IPortableDevicePropVariantCollection of VT_LPWSTR,
+ *    indicating the PersistentUniqueIDs.
+ *
+ *  The driver should:
+ *  - Iterate through the PersistentUniqueIDs, and convert to a currently valid object id.
+ *    This object ID list should be returned as an IPortableDevicePropVariantCollection of VT_LPWSTR
+ *    in WPD_PROPERTY_COMMON_OBJECT_IDS.
+ *    Order is implicit, i.e. the first element in the Persistent Unique ID list corresponds to the
+ *    to the first element of the ObjectID list and so on.
+ *
+ *    For those elements where an existing ObjectID could not be found (e.g. the
+ *    object is no longer present on the device), the element will contain the
+ *    empty string (L"").
+ */
+HRESULT WpdBaseDriver::OnGetObjectIDsFromPersistentUniqueIDs(
+    _In_ IPortableDeviceValues* pParams,
+    _In_ IPortableDeviceValues* pResults)
+{
+    HRESULT hr      = S_OK;
+    DWORD   dwCount = 0;
+    CComPtr<IPortableDevicePropVariantCollection> pPersistentIDs;
+    CComPtr<IPortableDevicePropVariantCollection> pObjectIDs;
+
+    if((pParams    == NULL) ||
+       (pResults   == NULL))
+    {
+        hr = E_POINTER;
+        CHECK_HR(hr, "Cannot have NULL parameter");
+        return hr;
+    }
+
+    // Get the list of Persistent IDs
+    if (hr == S_OK)
+    {
+        hr = pParams->GetIPortableDevicePropVariantCollectionValue(WPD_PROPERTY_COMMON_PERSISTENT_UNIQUE_IDS, &pPersistentIDs);
+        CHECK_HR(hr, "Failed to get WPD_PROPERTY_COMMON_PERSISTENT_UNIQUE_IDS");
+    }
+
+    // Create the collection to hold the ObjectIDs
+    if (hr == S_OK)
+    {
+        hr = CoCreateInstance(CLSID_PortableDevicePropVariantCollection,
+                              NULL,
+                              CLSCTX_INPROC_SERVER,
+                              IID_IPortableDevicePropVariantCollection,
+                              (VOID**) &pObjectIDs);
+        CHECK_HR(hr, "Failed to CoCreate CLSID_PortableDevicePropVariantCollection");
+    }
+
+    // Iterate through the persistent ID list and add the equivalent object ID for each element.
+    if (hr == S_OK)
+    {
+        hr = pPersistentIDs->GetCount(&dwCount);
+        CHECK_HR(hr, "Failed to get count from persistent ID collection");
+
+        if (hr == S_OK)
+        {
+            DWORD       dwIndex        = 0;
+            PROPVARIANT pvPersistentID = {0};
+            PROPVARIANT pvObjectID     = {0};
+
+            PropVariantInit(&pvPersistentID);
+            PropVariantInit(&pvObjectID);
+
+            for(dwIndex = 0; dwIndex < dwCount; dwIndex++)
+            {
+                pvObjectID.vt = VT_LPWSTR;
+                hr = pPersistentIDs->GetAt(dwIndex, &pvPersistentID);
+                CHECK_HR(hr, "Failed to get persistent ID at index %d", dwIndex);
+
+                // Since our persistent unique identifier are identical to our object
+                // identifiers, we just return it back to the caller.
+                if (hr == S_OK)
+                {
+                    pvObjectID.pwszVal = AtlAllocTaskWideString(pvPersistentID.pwszVal);
+                }
+
+                if (hr == S_OK)
+                {
+                    hr = pObjectIDs->Add(&pvObjectID);
+                    CHECK_HR(hr, "Failed to add next Object ID");
+                }
+
+                PropVariantClear(&pvPersistentID);
+                PropVariantClear(&pvObjectID);
+
+                if(FAILED(hr))
+                {
+                    break;
+                }
+            }
+        }
+    }
+
+    if (hr == S_OK)
+    {
+        hr = pResults->SetIPortableDevicePropVariantCollectionValue(WPD_PROPERTY_COMMON_OBJECT_IDS, pObjectIDs);
+        CHECK_HR(hr, "Failed to set WPD_PROPERTY_COMMON_OBJECT_IDS");
+    }
+
+    return hr;
+}
+