/** * FreeRDP: A Remote Desktop Protocol Implementation * Windows Clipboard Redirection * * Copyright 2012 Jason Champion * Copyright 2014 Marc-Andre Moreau * Copyright 2015 Thincast Technologies GmbH * Copyright 2015 DI (FH) Martin Haimberger * * 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. */ #include #define CINTERFACE #define COBJMACROS #include #include #include #include #include #include #include #include #include #include #include #include #include "wf_cliprdr.h" #define TAG CLIENT_TAG("windows") #ifdef WITH_DEBUG_CLIPRDR #define DEBUG_CLIPRDR(...) WLog_DBG(TAG, __VA_ARGS__) #else #define DEBUG_CLIPRDR(...) \ do \ { \ } while (0) #endif typedef BOOL(WINAPI* fnAddClipboardFormatListener)(HWND hwnd); typedef BOOL(WINAPI* fnRemoveClipboardFormatListener)(HWND hwnd); typedef BOOL(WINAPI* fnGetUpdatedClipboardFormats)(PUINT lpuiFormats, UINT cFormats, PUINT pcFormatsOut); typedef struct { UINT32 remote_format_id; UINT32 local_format_id; WCHAR* name; } formatMapping; typedef struct { IEnumFORMATETC iEnumFORMATETC; LONG m_lRefCount; LONG m_nIndex; LONG m_nNumFormats; FORMATETC* m_pFormatEtc; } CliprdrEnumFORMATETC; typedef struct { IStream iStream; LONG m_lRefCount; ULONG m_lIndex; ULARGE_INTEGER m_lSize; ULARGE_INTEGER m_lOffset; FILEDESCRIPTORW m_Dsc; void* m_pData; } CliprdrStream; typedef struct { IDataObject iDataObject; LONG m_lRefCount; FORMATETC* m_pFormatEtc; STGMEDIUM* m_pStgMedium; ULONG m_nNumFormats; ULONG m_nStreams; IStream** m_pStream; void* m_pData; } CliprdrDataObject; typedef struct { wfContext* wfc; rdpChannels* channels; CliprdrClientContext* context; BOOL sync; UINT32 capabilities; size_t map_size; size_t map_capacity; formatMapping* format_mappings; UINT32 requestedFormatId; HWND hwnd; HANDLE hmem; HANDLE thread; HANDLE response_data_event; LPDATAOBJECT data_obj; ULONG req_fsize; char* req_fdata; HANDLE req_fevent; size_t nFiles; size_t file_array_size; WCHAR** file_names; FILEDESCRIPTORW** fileDescriptor; BOOL legacyApi; HMODULE hUser32; HWND hWndNextViewer; fnAddClipboardFormatListener AddClipboardFormatListener; fnRemoveClipboardFormatListener RemoveClipboardFormatListener; fnGetUpdatedClipboardFormats GetUpdatedClipboardFormats; } wfClipboard; #define WM_CLIPRDR_MESSAGE (WM_USER + 156) #define OLE_SETCLIPBOARD 1 static BOOL wf_create_file_obj(wfClipboard* cliprdrrdr, IDataObject** ppDataObject); static void wf_destroy_file_obj(IDataObject* instance); static UINT32 get_remote_format_id(wfClipboard* clipboard, UINT32 local_format); static UINT cliprdr_send_data_request(wfClipboard* clipboard, UINT32 format); static UINT cliprdr_send_lock(wfClipboard* clipboard); static UINT cliprdr_send_unlock(wfClipboard* clipboard); static UINT cliprdr_send_request_filecontents(wfClipboard* clipboard, const void* streamid, ULONG index, UINT32 flag, DWORD positionhigh, DWORD positionlow, ULONG request); static void CliprdrDataObject_Delete(CliprdrDataObject* instance); static CliprdrEnumFORMATETC* CliprdrEnumFORMATETC_New(ULONG nFormats, FORMATETC* pFormatEtc); static void CliprdrEnumFORMATETC_Delete(CliprdrEnumFORMATETC* instance); static void CliprdrStream_Delete(CliprdrStream* instance); static BOOL try_open_clipboard(HWND hwnd) { for (size_t x = 0; x < 10; x++) { if (OpenClipboard(hwnd)) return TRUE; Sleep(10); } return FALSE; } /** * IStream */ static HRESULT STDMETHODCALLTYPE CliprdrStream_QueryInterface(IStream* This, REFIID riid, void** ppvObject) { if (IsEqualIID(riid, &IID_IStream) || IsEqualIID(riid, &IID_IUnknown)) { IStream_AddRef(This); *ppvObject = This; return S_OK; } else { *ppvObject = 0; return E_NOINTERFACE; } } static ULONG STDMETHODCALLTYPE CliprdrStream_AddRef(IStream* This) { CliprdrStream* instance = (CliprdrStream*)This; if (!instance) return 0; return InterlockedIncrement(&instance->m_lRefCount); } static ULONG STDMETHODCALLTYPE CliprdrStream_Release(IStream* This) { LONG count; CliprdrStream* instance = (CliprdrStream*)This; if (!instance) return 0; count = InterlockedDecrement(&instance->m_lRefCount); if (count == 0) { CliprdrStream_Delete(instance); return 0; } else { return count; } } static HRESULT STDMETHODCALLTYPE CliprdrStream_Read(IStream* This, void* pv, ULONG cb, ULONG* pcbRead) { int ret; CliprdrStream* instance = (CliprdrStream*)This; wfClipboard* clipboard; if (!pv || !pcbRead || !instance) return E_INVALIDARG; clipboard = (wfClipboard*)instance->m_pData; *pcbRead = 0; if (instance->m_lOffset.QuadPart >= instance->m_lSize.QuadPart) return S_FALSE; ret = cliprdr_send_request_filecontents(clipboard, (void*)This, instance->m_lIndex, FILECONTENTS_RANGE, instance->m_lOffset.HighPart, instance->m_lOffset.LowPart, cb); if (ret < 0) return E_FAIL; if (clipboard->req_fdata) { CopyMemory(pv, clipboard->req_fdata, clipboard->req_fsize); free(clipboard->req_fdata); } *pcbRead = clipboard->req_fsize; instance->m_lOffset.QuadPart += clipboard->req_fsize; if (clipboard->req_fsize < cb) return S_FALSE; return S_OK; } static HRESULT STDMETHODCALLTYPE CliprdrStream_Write(IStream* This, const void* pv, ULONG cb, ULONG* pcbWritten) { (void)This; (void)pv; (void)cb; (void)pcbWritten; return STG_E_ACCESSDENIED; } static HRESULT STDMETHODCALLTYPE CliprdrStream_Seek(IStream* This, LARGE_INTEGER dlibMove, DWORD dwOrigin, ULARGE_INTEGER* plibNewPosition) { ULONGLONG newoffset; CliprdrStream* instance = (CliprdrStream*)This; if (!instance) return E_INVALIDARG; newoffset = instance->m_lOffset.QuadPart; switch (dwOrigin) { case STREAM_SEEK_SET: newoffset = dlibMove.QuadPart; break; case STREAM_SEEK_CUR: newoffset += dlibMove.QuadPart; break; case STREAM_SEEK_END: newoffset = instance->m_lSize.QuadPart + dlibMove.QuadPart; break; default: return E_INVALIDARG; } if (newoffset < 0 || newoffset >= instance->m_lSize.QuadPart) return E_FAIL; instance->m_lOffset.QuadPart = newoffset; if (plibNewPosition) plibNewPosition->QuadPart = instance->m_lOffset.QuadPart; return S_OK; } static HRESULT STDMETHODCALLTYPE CliprdrStream_SetSize(IStream* This, ULARGE_INTEGER libNewSize) { (void)This; (void)libNewSize; return E_NOTIMPL; } static HRESULT STDMETHODCALLTYPE CliprdrStream_CopyTo(IStream* This, IStream* pstm, ULARGE_INTEGER cb, ULARGE_INTEGER* pcbRead, ULARGE_INTEGER* pcbWritten) { (void)This; (void)pstm; (void)cb; (void)pcbRead; (void)pcbWritten; return E_NOTIMPL; } static HRESULT STDMETHODCALLTYPE CliprdrStream_Commit(IStream* This, DWORD grfCommitFlags) { (void)This; (void)grfCommitFlags; return E_NOTIMPL; } static HRESULT STDMETHODCALLTYPE CliprdrStream_Revert(IStream* This) { (void)This; return E_NOTIMPL; } static HRESULT STDMETHODCALLTYPE CliprdrStream_LockRegion(IStream* This, ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType) { (void)This; (void)libOffset; (void)cb; (void)dwLockType; return E_NOTIMPL; } static HRESULT STDMETHODCALLTYPE CliprdrStream_UnlockRegion(IStream* This, ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType) { (void)This; (void)libOffset; (void)cb; (void)dwLockType; return E_NOTIMPL; } static HRESULT STDMETHODCALLTYPE CliprdrStream_Stat(IStream* This, STATSTG* pstatstg, DWORD grfStatFlag) { CliprdrStream* instance = (CliprdrStream*)This; if (!instance) return E_INVALIDARG; if (pstatstg == NULL) return STG_E_INVALIDPOINTER; ZeroMemory(pstatstg, sizeof(STATSTG)); switch (grfStatFlag) { case STATFLAG_DEFAULT: return STG_E_INSUFFICIENTMEMORY; case STATFLAG_NONAME: pstatstg->cbSize.QuadPart = instance->m_lSize.QuadPart; pstatstg->grfLocksSupported = LOCK_EXCLUSIVE; pstatstg->grfMode = GENERIC_READ; pstatstg->grfStateBits = 0; pstatstg->type = STGTY_STREAM; break; case STATFLAG_NOOPEN: return STG_E_INVALIDFLAG; default: return STG_E_INVALIDFLAG; } return S_OK; } static HRESULT STDMETHODCALLTYPE CliprdrStream_Clone(IStream* This, IStream** ppstm) { (void)This; (void)ppstm; return E_NOTIMPL; } static CliprdrStream* CliprdrStream_New(ULONG index, void* pData, const FILEDESCRIPTORW* dsc) { IStream* iStream; BOOL success = FALSE; BOOL isDir = FALSE; CliprdrStream* instance; wfClipboard* clipboard = (wfClipboard*)pData; instance = (CliprdrStream*)calloc(1, sizeof(CliprdrStream)); if (instance) { instance->m_Dsc = *dsc; iStream = &instance->iStream; iStream->lpVtbl = (IStreamVtbl*)calloc(1, sizeof(IStreamVtbl)); if (iStream->lpVtbl) { iStream->lpVtbl->QueryInterface = CliprdrStream_QueryInterface; iStream->lpVtbl->AddRef = CliprdrStream_AddRef; iStream->lpVtbl->Release = CliprdrStream_Release; iStream->lpVtbl->Read = CliprdrStream_Read; iStream->lpVtbl->Write = CliprdrStream_Write; iStream->lpVtbl->Seek = CliprdrStream_Seek; iStream->lpVtbl->SetSize = CliprdrStream_SetSize; iStream->lpVtbl->CopyTo = CliprdrStream_CopyTo; iStream->lpVtbl->Commit = CliprdrStream_Commit; iStream->lpVtbl->Revert = CliprdrStream_Revert; iStream->lpVtbl->LockRegion = CliprdrStream_LockRegion; iStream->lpVtbl->UnlockRegion = CliprdrStream_UnlockRegion; iStream->lpVtbl->Stat = CliprdrStream_Stat; iStream->lpVtbl->Clone = CliprdrStream_Clone; instance->m_lRefCount = 1; instance->m_lIndex = index; instance->m_pData = pData; instance->m_lOffset.QuadPart = 0; if (instance->m_Dsc.dwFlags & FD_ATTRIBUTES) { if (instance->m_Dsc.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) isDir = TRUE; } if (((instance->m_Dsc.dwFlags & FD_FILESIZE) == 0) && !isDir) { /* get content size of this stream */ if (cliprdr_send_request_filecontents(clipboard, (void*)instance, instance->m_lIndex, FILECONTENTS_SIZE, 0, 0, 8) == CHANNEL_RC_OK) { success = TRUE; } instance->m_lSize.QuadPart = *((LONGLONG*)clipboard->req_fdata); free(clipboard->req_fdata); } else { instance->m_lSize.LowPart = instance->m_Dsc.nFileSizeLow; instance->m_lSize.HighPart = instance->m_Dsc.nFileSizeHigh; success = TRUE; } } } if (!success) { CliprdrStream_Delete(instance); instance = NULL; } return instance; } void CliprdrStream_Delete(CliprdrStream* instance) { if (instance) { free(instance->iStream.lpVtbl); free(instance); } } /** * IDataObject */ static LONG cliprdr_lookup_format(CliprdrDataObject* instance, FORMATETC* pFormatEtc) { if (!instance || !pFormatEtc) return -1; for (ULONG i = 0; i < instance->m_nNumFormats; i++) { if ((pFormatEtc->tymed & instance->m_pFormatEtc[i].tymed) && pFormatEtc->cfFormat == instance->m_pFormatEtc[i].cfFormat && pFormatEtc->dwAspect & instance->m_pFormatEtc[i].dwAspect) { return (LONG)i; } } return -1; } static HRESULT STDMETHODCALLTYPE CliprdrDataObject_QueryInterface(IDataObject* This, REFIID riid, void** ppvObject) { (void)This; if (!ppvObject) return E_INVALIDARG; if (IsEqualIID(riid, &IID_IDataObject) || IsEqualIID(riid, &IID_IUnknown)) { IDataObject_AddRef(This); *ppvObject = This; return S_OK; } else { *ppvObject = 0; return E_NOINTERFACE; } } static ULONG STDMETHODCALLTYPE CliprdrDataObject_AddRef(IDataObject* This) { CliprdrDataObject* instance = (CliprdrDataObject*)This; if (!instance) return E_INVALIDARG; return InterlockedIncrement(&instance->m_lRefCount); } static ULONG STDMETHODCALLTYPE CliprdrDataObject_Release(IDataObject* This) { LONG count; CliprdrDataObject* instance = (CliprdrDataObject*)This; if (!instance) return E_INVALIDARG; count = InterlockedDecrement(&instance->m_lRefCount); if (count == 0) { CliprdrDataObject_Delete(instance); return 0; } else return count; } static HRESULT STDMETHODCALLTYPE CliprdrDataObject_GetData(IDataObject* This, FORMATETC* pFormatEtc, STGMEDIUM* pMedium) { LONG idx; CliprdrDataObject* instance = (CliprdrDataObject*)This; wfClipboard* clipboard; if (!pFormatEtc || !pMedium || !instance) return E_INVALIDARG; clipboard = (wfClipboard*)instance->m_pData; if (!clipboard) return E_INVALIDARG; if ((idx = cliprdr_lookup_format(instance, pFormatEtc)) == -1) return DV_E_FORMATETC; pMedium->tymed = instance->m_pFormatEtc[idx].tymed; pMedium->pUnkForRelease = 0; if (instance->m_pFormatEtc[idx].cfFormat == RegisterClipboardFormat(CFSTR_FILEDESCRIPTORW)) { FILEGROUPDESCRIPTOR* dsc; DWORD remote = get_remote_format_id(clipboard, instance->m_pFormatEtc[idx].cfFormat); if (cliprdr_send_data_request(clipboard, remote) != 0) return E_UNEXPECTED; pMedium->hGlobal = clipboard->hmem; /* points to a FILEGROUPDESCRIPTOR structure */ /* GlobalLock returns a pointer to the first byte of the memory block, * in which is a FILEGROUPDESCRIPTOR structure, whose first UINT member * is the number of FILEDESCRIPTOR's */ dsc = (FILEGROUPDESCRIPTOR*)GlobalLock(clipboard->hmem); instance->m_nStreams = dsc->cItems; GlobalUnlock(clipboard->hmem); if (instance->m_nStreams > 0) { if (!instance->m_pStream) { instance->m_pStream = (LPSTREAM*)calloc(instance->m_nStreams, sizeof(LPSTREAM)); if (instance->m_pStream) { for (ULONG i = 0; i < instance->m_nStreams; i++) { instance->m_pStream[i] = (IStream*)CliprdrStream_New(i, clipboard, &dsc->fgd[i]); if (!instance->m_pStream[i]) return E_OUTOFMEMORY; } } } } if (!instance->m_pStream) { if (clipboard->hmem) { GlobalFree(clipboard->hmem); clipboard->hmem = NULL; } pMedium->hGlobal = NULL; return E_OUTOFMEMORY; } } else if (instance->m_pFormatEtc[idx].cfFormat == RegisterClipboardFormat(CFSTR_FILECONTENTS)) { if ((pFormatEtc->lindex >= 0) && ((ULONG)pFormatEtc->lindex < instance->m_nStreams)) { pMedium->pstm = instance->m_pStream[pFormatEtc->lindex]; IDataObject_AddRef(instance->m_pStream[pFormatEtc->lindex]); } else return E_INVALIDARG; } else return E_UNEXPECTED; return S_OK; } static HRESULT STDMETHODCALLTYPE CliprdrDataObject_GetDataHere(IDataObject* This, FORMATETC* pformatetc, STGMEDIUM* pmedium) { (void)This; (void)pformatetc; (void)pmedium; return E_NOTIMPL; } static HRESULT STDMETHODCALLTYPE CliprdrDataObject_QueryGetData(IDataObject* This, FORMATETC* pformatetc) { CliprdrDataObject* instance = (CliprdrDataObject*)This; if (!pformatetc) return E_INVALIDARG; if (cliprdr_lookup_format(instance, pformatetc) == -1) return DV_E_FORMATETC; return S_OK; } static HRESULT STDMETHODCALLTYPE CliprdrDataObject_GetCanonicalFormatEtc(IDataObject* This, FORMATETC* pformatectIn, FORMATETC* pformatetcOut) { (void)This; (void)pformatectIn; if (!pformatetcOut) return E_INVALIDARG; pformatetcOut->ptd = NULL; return E_NOTIMPL; } static HRESULT STDMETHODCALLTYPE CliprdrDataObject_SetData(IDataObject* This, FORMATETC* pformatetc, STGMEDIUM* pmedium, BOOL fRelease) { (void)This; (void)pformatetc; (void)pmedium; (void)fRelease; return E_NOTIMPL; } static HRESULT STDMETHODCALLTYPE CliprdrDataObject_EnumFormatEtc(IDataObject* This, DWORD dwDirection, IEnumFORMATETC** ppenumFormatEtc) { CliprdrDataObject* instance = (CliprdrDataObject*)This; if (!instance || !ppenumFormatEtc) return E_INVALIDARG; if (dwDirection == DATADIR_GET) { *ppenumFormatEtc = (IEnumFORMATETC*)CliprdrEnumFORMATETC_New(instance->m_nNumFormats, instance->m_pFormatEtc); return (*ppenumFormatEtc) ? S_OK : E_OUTOFMEMORY; } else { return E_NOTIMPL; } } static HRESULT STDMETHODCALLTYPE CliprdrDataObject_DAdvise(IDataObject* This, FORMATETC* pformatetc, DWORD advf, IAdviseSink* pAdvSink, DWORD* pdwConnection) { (void)This; (void)pformatetc; (void)advf; (void)pAdvSink; (void)pdwConnection; return OLE_E_ADVISENOTSUPPORTED; } static HRESULT STDMETHODCALLTYPE CliprdrDataObject_DUnadvise(IDataObject* This, DWORD dwConnection) { (void)This; (void)dwConnection; return OLE_E_ADVISENOTSUPPORTED; } static HRESULT STDMETHODCALLTYPE CliprdrDataObject_EnumDAdvise(IDataObject* This, IEnumSTATDATA** ppenumAdvise) { (void)This; (void)ppenumAdvise; return OLE_E_ADVISENOTSUPPORTED; } static CliprdrDataObject* CliprdrDataObject_New(FORMATETC* fmtetc, STGMEDIUM* stgmed, ULONG count, void* data) { CliprdrDataObject* instance; IDataObject* iDataObject; instance = (CliprdrDataObject*)calloc(1, sizeof(CliprdrDataObject)); if (!instance) goto error; iDataObject = &instance->iDataObject; iDataObject->lpVtbl = (IDataObjectVtbl*)calloc(1, sizeof(IDataObjectVtbl)); if (!iDataObject->lpVtbl) goto error; iDataObject->lpVtbl->QueryInterface = CliprdrDataObject_QueryInterface; iDataObject->lpVtbl->AddRef = CliprdrDataObject_AddRef; iDataObject->lpVtbl->Release = CliprdrDataObject_Release; iDataObject->lpVtbl->GetData = CliprdrDataObject_GetData; iDataObject->lpVtbl->GetDataHere = CliprdrDataObject_GetDataHere; iDataObject->lpVtbl->QueryGetData = CliprdrDataObject_QueryGetData; iDataObject->lpVtbl->GetCanonicalFormatEtc = CliprdrDataObject_GetCanonicalFormatEtc; iDataObject->lpVtbl->SetData = CliprdrDataObject_SetData; iDataObject->lpVtbl->EnumFormatEtc = CliprdrDataObject_EnumFormatEtc; iDataObject->lpVtbl->DAdvise = CliprdrDataObject_DAdvise; iDataObject->lpVtbl->DUnadvise = CliprdrDataObject_DUnadvise; iDataObject->lpVtbl->EnumDAdvise = CliprdrDataObject_EnumDAdvise; instance->m_lRefCount = 1; instance->m_nNumFormats = count; instance->m_pData = data; instance->m_nStreams = 0; instance->m_pStream = NULL; if (count > 0) { instance->m_pFormatEtc = (FORMATETC*)calloc(count, sizeof(FORMATETC)); if (!instance->m_pFormatEtc) goto error; instance->m_pStgMedium = (STGMEDIUM*)calloc(count, sizeof(STGMEDIUM)); if (!instance->m_pStgMedium) goto error; for (ULONG i = 0; i < count; i++) { instance->m_pFormatEtc[i] = fmtetc[i]; instance->m_pStgMedium[i] = stgmed[i]; } } return instance; error: CliprdrDataObject_Delete(instance); return NULL; } void CliprdrDataObject_Delete(CliprdrDataObject* instance) { if (instance) { free(instance->iDataObject.lpVtbl); free(instance->m_pFormatEtc); free(instance->m_pStgMedium); if (instance->m_pStream) { for (ULONG i = 0; i < instance->m_nStreams; i++) CliprdrStream_Release(instance->m_pStream[i]); free(instance->m_pStream); } free(instance); } } static BOOL wf_create_file_obj(wfClipboard* clipboard, IDataObject** ppDataObject) { FORMATETC fmtetc[2]; STGMEDIUM stgmeds[2]; if (!ppDataObject) return FALSE; fmtetc[0].cfFormat = RegisterClipboardFormat(CFSTR_FILEDESCRIPTORW); fmtetc[0].dwAspect = DVASPECT_CONTENT; fmtetc[0].lindex = 0; fmtetc[0].ptd = NULL; fmtetc[0].tymed = TYMED_HGLOBAL; stgmeds[0].tymed = TYMED_HGLOBAL; stgmeds[0].hGlobal = NULL; stgmeds[0].pUnkForRelease = NULL; fmtetc[1].cfFormat = RegisterClipboardFormat(CFSTR_FILECONTENTS); fmtetc[1].dwAspect = DVASPECT_CONTENT; fmtetc[1].lindex = 0; fmtetc[1].ptd = NULL; fmtetc[1].tymed = TYMED_ISTREAM; stgmeds[1].tymed = TYMED_ISTREAM; stgmeds[1].pstm = NULL; stgmeds[1].pUnkForRelease = NULL; *ppDataObject = (IDataObject*)CliprdrDataObject_New(fmtetc, stgmeds, 2, clipboard); return (*ppDataObject) ? TRUE : FALSE; } static void wf_destroy_file_obj(IDataObject* instance) { if (instance) IDataObject_Release(instance); } /** * IEnumFORMATETC */ static void cliprdr_format_deep_copy(FORMATETC* dest, FORMATETC* source) { *dest = *source; if (source->ptd) { dest->ptd = (DVTARGETDEVICE*)CoTaskMemAlloc(sizeof(DVTARGETDEVICE)); if (dest->ptd) *(dest->ptd) = *(source->ptd); } } static HRESULT STDMETHODCALLTYPE CliprdrEnumFORMATETC_QueryInterface(IEnumFORMATETC* This, REFIID riid, void** ppvObject) { (void)This; if (IsEqualIID(riid, &IID_IEnumFORMATETC) || IsEqualIID(riid, &IID_IUnknown)) { IEnumFORMATETC_AddRef(This); *ppvObject = This; return S_OK; } else { *ppvObject = 0; return E_NOINTERFACE; } } static ULONG STDMETHODCALLTYPE CliprdrEnumFORMATETC_AddRef(IEnumFORMATETC* This) { CliprdrEnumFORMATETC* instance = (CliprdrEnumFORMATETC*)This; if (!instance) return 0; return InterlockedIncrement(&instance->m_lRefCount); } static ULONG STDMETHODCALLTYPE CliprdrEnumFORMATETC_Release(IEnumFORMATETC* This) { LONG count; CliprdrEnumFORMATETC* instance = (CliprdrEnumFORMATETC*)This; if (!instance) return 0; count = InterlockedDecrement(&instance->m_lRefCount); if (count == 0) { CliprdrEnumFORMATETC_Delete(instance); return 0; } else { return count; } } static HRESULT STDMETHODCALLTYPE CliprdrEnumFORMATETC_Next(IEnumFORMATETC* This, ULONG celt, FORMATETC* rgelt, ULONG* pceltFetched) { ULONG copied = 0; CliprdrEnumFORMATETC* instance = (CliprdrEnumFORMATETC*)This; if (!instance || !celt || !rgelt) return E_INVALIDARG; while ((instance->m_nIndex < instance->m_nNumFormats) && (copied < celt)) { cliprdr_format_deep_copy(&rgelt[copied++], &instance->m_pFormatEtc[instance->m_nIndex++]); } if (pceltFetched != 0) *pceltFetched = copied; return (copied == celt) ? S_OK : E_FAIL; } static HRESULT STDMETHODCALLTYPE CliprdrEnumFORMATETC_Skip(IEnumFORMATETC* This, ULONG celt) { CliprdrEnumFORMATETC* instance = (CliprdrEnumFORMATETC*)This; if (!instance) return E_INVALIDARG; if (instance->m_nIndex + (LONG)celt > instance->m_nNumFormats) return E_FAIL; instance->m_nIndex += celt; return S_OK; } static HRESULT STDMETHODCALLTYPE CliprdrEnumFORMATETC_Reset(IEnumFORMATETC* This) { CliprdrEnumFORMATETC* instance = (CliprdrEnumFORMATETC*)This; if (!instance) return E_INVALIDARG; instance->m_nIndex = 0; return S_OK; } static HRESULT STDMETHODCALLTYPE CliprdrEnumFORMATETC_Clone(IEnumFORMATETC* This, IEnumFORMATETC** ppEnum) { CliprdrEnumFORMATETC* instance = (CliprdrEnumFORMATETC*)This; if (!instance || !ppEnum) return E_INVALIDARG; *ppEnum = (IEnumFORMATETC*)CliprdrEnumFORMATETC_New(instance->m_nNumFormats, instance->m_pFormatEtc); if (!*ppEnum) return E_OUTOFMEMORY; ((CliprdrEnumFORMATETC*)*ppEnum)->m_nIndex = instance->m_nIndex; return S_OK; } CliprdrEnumFORMATETC* CliprdrEnumFORMATETC_New(ULONG nFormats, FORMATETC* pFormatEtc) { CliprdrEnumFORMATETC* instance; IEnumFORMATETC* iEnumFORMATETC; if ((nFormats != 0) && !pFormatEtc) return NULL; instance = (CliprdrEnumFORMATETC*)calloc(1, sizeof(CliprdrEnumFORMATETC)); if (!instance) goto error; iEnumFORMATETC = &instance->iEnumFORMATETC; iEnumFORMATETC->lpVtbl = (IEnumFORMATETCVtbl*)calloc(1, sizeof(IEnumFORMATETCVtbl)); if (!iEnumFORMATETC->lpVtbl) goto error; iEnumFORMATETC->lpVtbl->QueryInterface = CliprdrEnumFORMATETC_QueryInterface; iEnumFORMATETC->lpVtbl->AddRef = CliprdrEnumFORMATETC_AddRef; iEnumFORMATETC->lpVtbl->Release = CliprdrEnumFORMATETC_Release; iEnumFORMATETC->lpVtbl->Next = CliprdrEnumFORMATETC_Next; iEnumFORMATETC->lpVtbl->Skip = CliprdrEnumFORMATETC_Skip; iEnumFORMATETC->lpVtbl->Reset = CliprdrEnumFORMATETC_Reset; iEnumFORMATETC->lpVtbl->Clone = CliprdrEnumFORMATETC_Clone; instance->m_lRefCount = 1; instance->m_nIndex = 0; instance->m_nNumFormats = nFormats; if (nFormats > 0) { instance->m_pFormatEtc = (FORMATETC*)calloc(nFormats, sizeof(FORMATETC)); if (!instance->m_pFormatEtc) goto error; for (ULONG i = 0; i < nFormats; i++) cliprdr_format_deep_copy(&instance->m_pFormatEtc[i], &pFormatEtc[i]); } return instance; error: CliprdrEnumFORMATETC_Delete(instance); return NULL; } void CliprdrEnumFORMATETC_Delete(CliprdrEnumFORMATETC* instance) { if (instance) { free(instance->iEnumFORMATETC.lpVtbl); if (instance->m_pFormatEtc) { for (LONG i = 0; i < instance->m_nNumFormats; i++) { if (instance->m_pFormatEtc[i].ptd) CoTaskMemFree(instance->m_pFormatEtc[i].ptd); } free(instance->m_pFormatEtc); } free(instance); } } /***********************************************************************************/ static UINT32 get_local_format_id_by_name(wfClipboard* clipboard, const TCHAR* format_name) { formatMapping* map; WCHAR* unicode_name; #if !defined(UNICODE) size_t size; #endif if (!clipboard || !format_name) return 0; #if defined(UNICODE) unicode_name = _wcsdup(format_name); #else size = _tcslen(format_name); unicode_name = calloc(size + 1, sizeof(WCHAR)); if (!unicode_name) return 0; MultiByteToWideChar(CP_OEMCP, 0, format_name, strlen(format_name), unicode_name, size); #endif if (!unicode_name) return 0; for (size_t i = 0; i < clipboard->map_size; i++) { map = &clipboard->format_mappings[i]; if (map->name) { if (wcscmp(map->name, unicode_name) == 0) { free(unicode_name); return map->local_format_id; } } } free(unicode_name); return 0; } static INLINE BOOL file_transferring(wfClipboard* clipboard) { return get_local_format_id_by_name(clipboard, CFSTR_FILEDESCRIPTORW) ? TRUE : FALSE; } static UINT32 get_remote_format_id(wfClipboard* clipboard, UINT32 local_format) { formatMapping* map; if (!clipboard) return 0; for (UINT32 i = 0; i < clipboard->map_size; i++) { map = &clipboard->format_mappings[i]; if (map->local_format_id == local_format) return map->remote_format_id; } return local_format; } static void map_ensure_capacity(wfClipboard* clipboard) { if (!clipboard) return; if (clipboard->map_size >= clipboard->map_capacity) { size_t new_size; formatMapping* new_map; new_size = clipboard->map_capacity * 2; new_map = (formatMapping*)realloc(clipboard->format_mappings, sizeof(formatMapping) * new_size); if (!new_map) return; clipboard->format_mappings = new_map; clipboard->map_capacity = new_size; } } static BOOL clear_format_map(wfClipboard* clipboard) { formatMapping* map; if (!clipboard) return FALSE; if (clipboard->format_mappings) { for (size_t i = 0; i < clipboard->map_capacity; i++) { map = &clipboard->format_mappings[i]; map->remote_format_id = 0; map->local_format_id = 0; free(map->name); map->name = NULL; } } clipboard->map_size = 0; return TRUE; } static UINT cliprdr_send_tempdir(wfClipboard* clipboard) { CLIPRDR_TEMP_DIRECTORY tempDirectory; if (!clipboard) return -1; if (GetEnvironmentVariableA("TEMP", tempDirectory.szTempDir, sizeof(tempDirectory.szTempDir)) == 0) return -1; return clipboard->context->TempDirectory(clipboard->context, &tempDirectory); } static BOOL cliprdr_GetUpdatedClipboardFormats(wfClipboard* clipboard, PUINT lpuiFormats, UINT cFormats, PUINT pcFormatsOut) { UINT index = 0; UINT format = 0; BOOL clipboardOpen = FALSE; if (!clipboard->legacyApi) return clipboard->GetUpdatedClipboardFormats(lpuiFormats, cFormats, pcFormatsOut); clipboardOpen = try_open_clipboard(clipboard->hwnd); if (!clipboardOpen) { *pcFormatsOut = 0; return TRUE; /* Other app holding clipboard */ } while (index < cFormats) { format = EnumClipboardFormats(format); if (!format) break; lpuiFormats[index] = format; index++; } *pcFormatsOut = index; CloseClipboard(); return TRUE; } static UINT cliprdr_send_format_list(wfClipboard* clipboard) { UINT rc; int count = 0; UINT32 numFormats = 0; UINT32 formatId = 0; char formatName[1024]; CLIPRDR_FORMAT* formats = NULL; CLIPRDR_FORMAT_LIST formatList = { 0 }; if (!clipboard) return ERROR_INTERNAL_ERROR; /* Ignore if other app is holding clipboard */ if (try_open_clipboard(clipboard->hwnd)) { count = CountClipboardFormats(); numFormats = (UINT32)count; formats = (CLIPRDR_FORMAT*)calloc(numFormats, sizeof(CLIPRDR_FORMAT)); if (!formats) { CloseClipboard(); return CHANNEL_RC_NO_MEMORY; } { UINT32 index = 0; if (IsClipboardFormatAvailable(CF_HDROP)) { formats[index++].formatId = RegisterClipboardFormat(CFSTR_FILEDESCRIPTORW); formats[index++].formatId = RegisterClipboardFormat(CFSTR_FILECONTENTS); } else { while ((formatId = EnumClipboardFormats(formatId)) != 0) formats[index++].formatId = formatId; } numFormats = index; } if (!CloseClipboard()) { free(formats); return ERROR_INTERNAL_ERROR; } for (UINT index = 0; index < numFormats; index++) { if (GetClipboardFormatNameA(formats[index].formatId, formatName, sizeof(formatName))) { formats[index].formatName = _strdup(formatName); } } } formatList.numFormats = numFormats; formatList.formats = formats; formatList.common.msgType = CB_FORMAT_LIST; rc = clipboard->context->ClientFormatList(clipboard->context, &formatList); for (UINT index = 0; index < numFormats; index++) free(formats[index].formatName); free(formats); return rc; } static UINT cliprdr_send_data_request(wfClipboard* clipboard, UINT32 formatId) { UINT rc; UINT32 remoteFormatId; CLIPRDR_FORMAT_DATA_REQUEST formatDataRequest; if (!clipboard || !clipboard->context || !clipboard->context->ClientFormatDataRequest) return ERROR_INTERNAL_ERROR; remoteFormatId = get_remote_format_id(clipboard, formatId); formatDataRequest.requestedFormatId = remoteFormatId; clipboard->requestedFormatId = formatId; rc = clipboard->context->ClientFormatDataRequest(clipboard->context, &formatDataRequest); if (WaitForSingleObject(clipboard->response_data_event, INFINITE) != WAIT_OBJECT_0) rc = ERROR_INTERNAL_ERROR; else if (!ResetEvent(clipboard->response_data_event)) rc = ERROR_INTERNAL_ERROR; return rc; } UINT cliprdr_send_request_filecontents(wfClipboard* clipboard, const void* streamid, ULONG index, UINT32 flag, DWORD positionhigh, DWORD positionlow, ULONG nreq) { UINT rc; CLIPRDR_FILE_CONTENTS_REQUEST fileContentsRequest; if (!clipboard || !clipboard->context || !clipboard->context->ClientFileContentsRequest) return ERROR_INTERNAL_ERROR; fileContentsRequest.streamId = (UINT32)(ULONG_PTR)streamid; fileContentsRequest.listIndex = index; fileContentsRequest.dwFlags = flag; fileContentsRequest.nPositionLow = positionlow; fileContentsRequest.nPositionHigh = positionhigh; fileContentsRequest.cbRequested = nreq; fileContentsRequest.clipDataId = 0; fileContentsRequest.common.msgFlags = 0; rc = clipboard->context->ClientFileContentsRequest(clipboard->context, &fileContentsRequest); if (WaitForSingleObject(clipboard->req_fevent, INFINITE) != WAIT_OBJECT_0) rc = ERROR_INTERNAL_ERROR; else if (!ResetEvent(clipboard->req_fevent)) rc = ERROR_INTERNAL_ERROR; return rc; } static UINT cliprdr_send_response_filecontents(wfClipboard* clipboard, UINT32 streamId, UINT32 size, BYTE* data) { CLIPRDR_FILE_CONTENTS_RESPONSE fileContentsResponse; if (!clipboard || !clipboard->context || !clipboard->context->ClientFileContentsResponse) return ERROR_INTERNAL_ERROR; fileContentsResponse.streamId = streamId; fileContentsResponse.cbRequested = size; fileContentsResponse.requestedData = data; fileContentsResponse.common.msgFlags = CB_RESPONSE_OK; return clipboard->context->ClientFileContentsResponse(clipboard->context, &fileContentsResponse); } static LRESULT CALLBACK cliprdr_proc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam) { static wfClipboard* clipboard = NULL; switch (Msg) { case WM_CREATE: DEBUG_CLIPRDR("info: WM_CREATE"); clipboard = (wfClipboard*)((CREATESTRUCT*)lParam)->lpCreateParams; clipboard->hwnd = hWnd; if (!clipboard->legacyApi) clipboard->AddClipboardFormatListener(hWnd); else clipboard->hWndNextViewer = SetClipboardViewer(hWnd); break; case WM_CLOSE: DEBUG_CLIPRDR("info: WM_CLOSE"); if (!clipboard->legacyApi) clipboard->RemoveClipboardFormatListener(hWnd); break; case WM_DESTROY: if (clipboard->legacyApi) ChangeClipboardChain(hWnd, clipboard->hWndNextViewer); break; case WM_CLIPBOARDUPDATE: DEBUG_CLIPRDR("info: WM_CLIPBOARDUPDATE"); if (clipboard->sync) { if ((GetClipboardOwner() != clipboard->hwnd) && (S_FALSE == OleIsCurrentClipboard(clipboard->data_obj))) { if (clipboard->hmem) { GlobalFree(clipboard->hmem); clipboard->hmem = NULL; } cliprdr_send_format_list(clipboard); } } break; case WM_RENDERALLFORMATS: DEBUG_CLIPRDR("info: WM_RENDERALLFORMATS"); /* discard all contexts in clipboard */ if (!try_open_clipboard(clipboard->hwnd)) { DEBUG_CLIPRDR("OpenClipboard failed with 0x%x", GetLastError()); break; } EmptyClipboard(); CloseClipboard(); break; case WM_RENDERFORMAT: DEBUG_CLIPRDR("info: WM_RENDERFORMAT"); if (cliprdr_send_data_request(clipboard, (UINT32)wParam) != 0) { DEBUG_CLIPRDR("error: cliprdr_send_data_request failed."); break; } if (!SetClipboardData((UINT)wParam, clipboard->hmem)) { DEBUG_CLIPRDR("SetClipboardData failed with 0x%x", GetLastError()); if (clipboard->hmem) { GlobalFree(clipboard->hmem); clipboard->hmem = NULL; } } /* Note: GlobalFree() is not needed when success */ break; case WM_DRAWCLIPBOARD: if (clipboard->legacyApi) { if ((GetClipboardOwner() != clipboard->hwnd) && (S_FALSE == OleIsCurrentClipboard(clipboard->data_obj))) { cliprdr_send_format_list(clipboard); } SendMessage(clipboard->hWndNextViewer, Msg, wParam, lParam); } break; case WM_CHANGECBCHAIN: if (clipboard->legacyApi) { HWND hWndCurrViewer = (HWND)wParam; HWND hWndNextViewer = (HWND)lParam; if (hWndCurrViewer == clipboard->hWndNextViewer) clipboard->hWndNextViewer = hWndNextViewer; else if (clipboard->hWndNextViewer) SendMessage(clipboard->hWndNextViewer, Msg, wParam, lParam); } break; case WM_CLIPRDR_MESSAGE: DEBUG_CLIPRDR("info: WM_CLIPRDR_MESSAGE"); switch (wParam) { case OLE_SETCLIPBOARD: DEBUG_CLIPRDR("info: OLE_SETCLIPBOARD"); if (wf_create_file_obj(clipboard, &clipboard->data_obj)) { if (OleSetClipboard(clipboard->data_obj) != S_OK) { wf_destroy_file_obj(clipboard->data_obj); clipboard->data_obj = NULL; } } break; default: break; } break; case WM_DESTROYCLIPBOARD: case WM_ASKCBFORMATNAME: case WM_HSCROLLCLIPBOARD: case WM_PAINTCLIPBOARD: case WM_SIZECLIPBOARD: case WM_VSCROLLCLIPBOARD: default: return DefWindowProc(hWnd, Msg, wParam, lParam); } return 0; } static int create_cliprdr_window(wfClipboard* clipboard) { WNDCLASSEX wnd_cls = { 0 }; wnd_cls.cbSize = sizeof(WNDCLASSEX); wnd_cls.style = CS_OWNDC; wnd_cls.lpfnWndProc = cliprdr_proc; wnd_cls.cbClsExtra = 0; wnd_cls.cbWndExtra = 0; wnd_cls.hIcon = NULL; wnd_cls.hCursor = NULL; wnd_cls.hbrBackground = NULL; wnd_cls.lpszMenuName = NULL; wnd_cls.lpszClassName = _T("ClipboardHiddenMessageProcessor"); wnd_cls.hInstance = GetModuleHandle(NULL); wnd_cls.hIconSm = NULL; RegisterClassEx(&wnd_cls); clipboard->hwnd = CreateWindowEx(WS_EX_LEFT, _T("ClipboardHiddenMessageProcessor"), _T("rdpclip"), 0, 0, 0, 0, 0, HWND_MESSAGE, NULL, GetModuleHandle(NULL), clipboard); if (!clipboard->hwnd) { DEBUG_CLIPRDR("error: CreateWindowEx failed with %x.", GetLastError()); return -1; } return 0; } static DWORD WINAPI cliprdr_thread_func(LPVOID arg) { int ret; MSG msg; BOOL mcode; wfClipboard* clipboard = (wfClipboard*)arg; OleInitialize(0); if ((ret = create_cliprdr_window(clipboard)) != 0) { OleUninitialize(); DEBUG_CLIPRDR("error: create clipboard window failed."); return 0; } while ((mcode = GetMessage(&msg, 0, 0, 0)) != 0) { if (mcode == -1) { DEBUG_CLIPRDR("error: clipboard thread GetMessage failed."); break; } else { TranslateMessage(&msg); DispatchMessage(&msg); } } OleUninitialize(); return 0; } static void clear_file_array(wfClipboard* clipboard) { if (!clipboard) return; /* clear file_names array */ if (clipboard->file_names) { for (size_t i = 0; i < clipboard->nFiles; i++) { free(clipboard->file_names[i]); clipboard->file_names[i] = NULL; } free(clipboard->file_names); clipboard->file_names = NULL; } /* clear fileDescriptor array */ if (clipboard->fileDescriptor) { for (size_t i = 0; i < clipboard->nFiles; i++) { free(clipboard->fileDescriptor[i]); clipboard->fileDescriptor[i] = NULL; } free(clipboard->fileDescriptor); clipboard->fileDescriptor = NULL; } clipboard->file_array_size = 0; clipboard->nFiles = 0; } static BOOL wf_cliprdr_get_file_contents(WCHAR* file_name, BYTE* buffer, LONG positionLow, LONG positionHigh, DWORD nRequested, DWORD* puSize) { BOOL res = FALSE; HANDLE hFile; DWORD nGet, rc; if (!file_name || !buffer || !puSize) { WLog_ERR(TAG, "get file contents Invalid Arguments."); return FALSE; } hFile = CreateFileW(file_name, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_BACKUP_SEMANTICS, NULL); if (hFile == INVALID_HANDLE_VALUE) return FALSE; rc = SetFilePointer(hFile, positionLow, &positionHigh, FILE_BEGIN); if (rc == INVALID_SET_FILE_POINTER) goto error; if (!ReadFile(hFile, buffer, nRequested, &nGet, NULL)) { DEBUG_CLIPRDR("ReadFile failed with 0x%08lX.", GetLastError()); goto error; } res = TRUE; error: if (!CloseHandle(hFile)) res = FALSE; if (res) *puSize = nGet; return res; } /* path_name has a '\' at the end. e.g. c:\newfolder\, file_name is c:\newfolder\new.txt */ static FILEDESCRIPTORW* wf_cliprdr_get_file_descriptor(WCHAR* file_name, size_t pathLen) { HANDLE hFile; FILEDESCRIPTORW* fd; fd = (FILEDESCRIPTORW*)calloc(1, sizeof(FILEDESCRIPTORW)); if (!fd) return NULL; hFile = CreateFileW(file_name, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_BACKUP_SEMANTICS, NULL); if (hFile == INVALID_HANDLE_VALUE) { free(fd); return NULL; } fd->dwFlags = FD_ATTRIBUTES | FD_FILESIZE | FD_WRITESTIME | FD_PROGRESSUI; fd->dwFileAttributes = GetFileAttributes(file_name); if (!GetFileTime(hFile, NULL, NULL, &fd->ftLastWriteTime)) { fd->dwFlags &= ~FD_WRITESTIME; } fd->nFileSizeLow = GetFileSize(hFile, &fd->nFileSizeHigh); wcscpy_s(fd->cFileName, sizeof(fd->cFileName) / 2, file_name + pathLen); CloseHandle(hFile); return fd; } static BOOL wf_cliprdr_array_ensure_capacity(wfClipboard* clipboard) { if (!clipboard) return FALSE; if (clipboard->nFiles == clipboard->file_array_size) { size_t new_size; FILEDESCRIPTORW** new_fd; WCHAR** new_name; new_size = (clipboard->file_array_size + 1) * 2; new_fd = (FILEDESCRIPTORW**)realloc(clipboard->fileDescriptor, new_size * sizeof(FILEDESCRIPTORW*)); if (new_fd) clipboard->fileDescriptor = new_fd; new_name = (WCHAR**)realloc(clipboard->file_names, new_size * sizeof(WCHAR*)); if (new_name) clipboard->file_names = new_name; if (!new_fd || !new_name) return FALSE; clipboard->file_array_size = new_size; } return TRUE; } static BOOL wf_cliprdr_add_to_file_arrays(wfClipboard* clipboard, WCHAR* full_file_name, size_t pathLen) { if (!wf_cliprdr_array_ensure_capacity(clipboard)) return FALSE; /* add to name array */ clipboard->file_names[clipboard->nFiles] = (LPWSTR)malloc(MAX_PATH * 2); if (!clipboard->file_names[clipboard->nFiles]) return FALSE; wcscpy_s(clipboard->file_names[clipboard->nFiles], MAX_PATH, full_file_name); /* add to descriptor array */ clipboard->fileDescriptor[clipboard->nFiles] = wf_cliprdr_get_file_descriptor(full_file_name, pathLen); if (!clipboard->fileDescriptor[clipboard->nFiles]) { free(clipboard->file_names[clipboard->nFiles]); return FALSE; } clipboard->nFiles++; return TRUE; } static BOOL wf_cliprdr_traverse_directory(wfClipboard* clipboard, WCHAR* Dir, size_t pathLen) { HANDLE hFind; WCHAR DirSpec[MAX_PATH]; WIN32_FIND_DATA FindFileData; if (!clipboard || !Dir) return FALSE; StringCchCopy(DirSpec, MAX_PATH, Dir); StringCchCat(DirSpec, MAX_PATH, TEXT("\\*")); hFind = FindFirstFile(DirSpec, &FindFileData); if (hFind == INVALID_HANDLE_VALUE) { DEBUG_CLIPRDR("FindFirstFile failed with 0x%x.", GetLastError()); return FALSE; } while (FindNextFile(hFind, &FindFileData)) { if ((((FindFileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0) && (wcscmp(FindFileData.cFileName, _T(".")) == 0)) || (wcscmp(FindFileData.cFileName, _T("..")) == 0)) { continue; } if ((FindFileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0) { WCHAR DirAdd[MAX_PATH]; StringCchCopy(DirAdd, MAX_PATH, Dir); StringCchCat(DirAdd, MAX_PATH, _T("\\")); StringCchCat(DirAdd, MAX_PATH, FindFileData.cFileName); if (!wf_cliprdr_add_to_file_arrays(clipboard, DirAdd, pathLen)) return FALSE; if (!wf_cliprdr_traverse_directory(clipboard, DirAdd, pathLen)) return FALSE; } else { WCHAR fileName[MAX_PATH]; StringCchCopy(fileName, MAX_PATH, Dir); StringCchCat(fileName, MAX_PATH, _T("\\")); StringCchCat(fileName, MAX_PATH, FindFileData.cFileName); if (!wf_cliprdr_add_to_file_arrays(clipboard, fileName, pathLen)) return FALSE; } } FindClose(hFind); return TRUE; } static UINT wf_cliprdr_send_client_capabilities(wfClipboard* clipboard) { CLIPRDR_CAPABILITIES capabilities; CLIPRDR_GENERAL_CAPABILITY_SET generalCapabilitySet; if (!clipboard || !clipboard->context || !clipboard->context->ClientCapabilities) return ERROR_INTERNAL_ERROR; capabilities.cCapabilitiesSets = 1; capabilities.capabilitySets = (CLIPRDR_CAPABILITY_SET*)&(generalCapabilitySet); generalCapabilitySet.capabilitySetType = CB_CAPSTYPE_GENERAL; generalCapabilitySet.capabilitySetLength = 12; generalCapabilitySet.version = CB_CAPS_VERSION_2; generalCapabilitySet.generalFlags = CB_USE_LONG_FORMAT_NAMES | CB_STREAM_FILECLIP_ENABLED | CB_FILECLIP_NO_FILE_PATHS; return clipboard->context->ClientCapabilities(clipboard->context, &capabilities); } /** * Function description * * @return 0 on success, otherwise a Win32 error code */ static UINT wf_cliprdr_monitor_ready(CliprdrClientContext* context, const CLIPRDR_MONITOR_READY* monitorReady) { UINT rc; wfClipboard* clipboard = (wfClipboard*)context->custom; if (!context || !monitorReady) return ERROR_INTERNAL_ERROR; clipboard->sync = TRUE; rc = wf_cliprdr_send_client_capabilities(clipboard); if (rc != CHANNEL_RC_OK) return rc; return cliprdr_send_format_list(clipboard); } /** * Function description * * @return 0 on success, otherwise a Win32 error code */ static UINT wf_cliprdr_server_capabilities(CliprdrClientContext* context, const CLIPRDR_CAPABILITIES* capabilities) { CLIPRDR_CAPABILITY_SET* capabilitySet; wfClipboard* clipboard = (wfClipboard*)context->custom; if (!context || !capabilities) return ERROR_INTERNAL_ERROR; for (UINT32 index = 0; index < capabilities->cCapabilitiesSets; index++) { capabilitySet = &(capabilities->capabilitySets[index]); if ((capabilitySet->capabilitySetType == CB_CAPSTYPE_GENERAL) && (capabilitySet->capabilitySetLength >= CB_CAPSTYPE_GENERAL_LEN)) { CLIPRDR_GENERAL_CAPABILITY_SET* generalCapabilitySet = (CLIPRDR_GENERAL_CAPABILITY_SET*)capabilitySet; clipboard->capabilities = generalCapabilitySet->generalFlags; break; } } return CHANNEL_RC_OK; } /** * Function description * * @return 0 on success, otherwise a Win32 error code */ static UINT wf_cliprdr_server_format_list(CliprdrClientContext* context, const CLIPRDR_FORMAT_LIST* formatList) { UINT rc = ERROR_INTERNAL_ERROR; formatMapping* mapping; CLIPRDR_FORMAT* format; wfClipboard* clipboard = (wfClipboard*)context->custom; if (!clear_format_map(clipboard)) return ERROR_INTERNAL_ERROR; for (UINT32 i = 0; i < formatList->numFormats; i++) { format = &(formatList->formats[i]); mapping = &(clipboard->format_mappings[i]); mapping->remote_format_id = format->formatId; if (format->formatName) { mapping->name = ConvertUtf8ToWCharAlloc(format->formatName, NULL); if (mapping->name) mapping->local_format_id = RegisterClipboardFormatW((LPWSTR)mapping->name); } else { mapping->name = NULL; mapping->local_format_id = mapping->remote_format_id; } clipboard->map_size++; map_ensure_capacity(clipboard); } if (file_transferring(clipboard)) { if (PostMessage(clipboard->hwnd, WM_CLIPRDR_MESSAGE, OLE_SETCLIPBOARD, 0)) rc = CHANNEL_RC_OK; } else { if (!try_open_clipboard(clipboard->hwnd)) return CHANNEL_RC_OK; /* Ignore, other app holding clipboard */ if (EmptyClipboard()) { for (UINT32 i = 0; i < (UINT32)clipboard->map_size; i++) SetClipboardData(clipboard->format_mappings[i].local_format_id, NULL); rc = CHANNEL_RC_OK; } if (!CloseClipboard() && GetLastError()) return ERROR_INTERNAL_ERROR; } return rc; } /** * Function description * * @return 0 on success, otherwise a Win32 error code */ static UINT wf_cliprdr_server_format_list_response(CliprdrClientContext* context, const CLIPRDR_FORMAT_LIST_RESPONSE* formatListResponse) { (void)context; (void)formatListResponse; if (formatListResponse->common.msgFlags != CB_RESPONSE_OK) return E_FAIL; return CHANNEL_RC_OK; } /** * Function description * * @return 0 on success, otherwise a Win32 error code */ static UINT wf_cliprdr_server_lock_clipboard_data(CliprdrClientContext* context, const CLIPRDR_LOCK_CLIPBOARD_DATA* lockClipboardData) { (void)context; (void)lockClipboardData; return CHANNEL_RC_OK; } /** * Function description * * @return 0 on success, otherwise a Win32 error code */ static UINT wf_cliprdr_server_unlock_clipboard_data(CliprdrClientContext* context, const CLIPRDR_UNLOCK_CLIPBOARD_DATA* unlockClipboardData) { (void)context; (void)unlockClipboardData; return CHANNEL_RC_OK; } static BOOL wf_cliprdr_process_filename(wfClipboard* clipboard, WCHAR* wFileName, size_t str_len) { size_t pathLen; size_t offset = str_len; if (!clipboard || !wFileName) return FALSE; /* find the last '\' in full file name */ while (offset > 0) { if (wFileName[offset] == L'\\') break; else offset--; } pathLen = offset + 1; if (!wf_cliprdr_add_to_file_arrays(clipboard, wFileName, pathLen)) return FALSE; if ((clipboard->fileDescriptor[clipboard->nFiles - 1]->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0) { /* this is a directory */ if (!wf_cliprdr_traverse_directory(clipboard, wFileName, pathLen)) return FALSE; } return TRUE; } static SSIZE_T wf_cliprdr_tryopen(wfClipboard* clipboard, UINT32 requestedFormatId, BYTE** pData) { SSIZE_T rc = -1; WINPR_ASSERT(clipboard); WINPR_ASSERT(pData); *pData = NULL; /* Ignore if other app is holding the clipboard */ if (!try_open_clipboard(clipboard->hwnd)) return 0; HANDLE hClipdata = GetClipboardData(requestedFormatId); if (!hClipdata) goto fail; char* globlemem = (char*)GlobalLock(hClipdata); const SSIZE_T size = GlobalSize(hClipdata); if (size <= 0) goto unlock; BYTE* buff = malloc(size); if (buff == NULL) goto fail; CopyMemory(buff, globlemem, size); *pData = buff; rc = size; unlock: GlobalUnlock(hClipdata); fail: CloseClipboard(); return rc; } static SSIZE_T wf_cliprdr_get_filedescriptor(wfClipboard* clipboard, BYTE** pData) { WINPR_ASSERT(clipboard); WINPR_ASSERT(pData); SSIZE_T rc = -1; LPDATAOBJECT dataObj = NULL; FORMATETC format_etc = { 0 }; STGMEDIUM stg_medium = { 0 }; *pData = NULL; HRESULT result = OleGetClipboard(&dataObj); if (FAILED(result)) return -1; /* get DROPFILES struct from OLE */ format_etc.cfFormat = CF_HDROP; format_etc.tymed = TYMED_HGLOBAL; format_etc.dwAspect = 1; format_etc.lindex = -1; result = IDataObject_GetData(dataObj, &format_etc, &stg_medium); if (FAILED(result)) { DEBUG_CLIPRDR("dataObj->GetData failed."); goto exit; } DROPFILES* dropFiles = (DROPFILES*)GlobalLock(stg_medium.hGlobal); if (!dropFiles) { ReleaseStgMedium(&stg_medium); clipboard->nFiles = 0; goto exit; } clear_file_array(clipboard); if (dropFiles->fWide) { /* dropFiles contains file names */ size_t len = 0; for (WCHAR* wFileName = (WCHAR*)((char*)dropFiles + dropFiles->pFiles); (len = wcslen(wFileName)) > 0; wFileName += len + 1) { wf_cliprdr_process_filename(clipboard, wFileName, wcslen(wFileName)); } } else { size_t len = 0; for (char* p = (char*)((char*)dropFiles + dropFiles->pFiles); (len = strlen(p)) > 0; p += len + 1, clipboard->nFiles++) { const int cchWideChar = MultiByteToWideChar(CP_ACP, MB_COMPOSITE, p, len, NULL, 0); WCHAR* wFileName = (LPWSTR)calloc(cchWideChar, sizeof(WCHAR)); MultiByteToWideChar(CP_ACP, MB_COMPOSITE, p, len, wFileName, cchWideChar); wf_cliprdr_process_filename(clipboard, wFileName, cchWideChar); free(wFileName); } } GlobalUnlock(stg_medium.hGlobal); ReleaseStgMedium(&stg_medium); exit: { const size_t size = 4ull + clipboard->nFiles * sizeof(FILEDESCRIPTORW); FILEGROUPDESCRIPTORW* groupDsc = (FILEGROUPDESCRIPTORW*)calloc(size, 1); if (groupDsc) { groupDsc->cItems = clipboard->nFiles; for (size_t i = 0; i < clipboard->nFiles; i++) { if (clipboard->fileDescriptor[i]) groupDsc->fgd[i] = *clipboard->fileDescriptor[i]; } *pData = (BYTE*)groupDsc; rc = size; } } IDataObject_Release(dataObj); return rc; } /** * Function description * * @return 0 on success, otherwise a Win32 error code */ static UINT wf_cliprdr_server_format_data_request(CliprdrClientContext* context, const CLIPRDR_FORMAT_DATA_REQUEST* formatDataRequest) { CLIPRDR_FORMAT_DATA_RESPONSE response = { 0 }; if (!context || !formatDataRequest) return ERROR_INTERNAL_ERROR; wfClipboard* clipboard = (wfClipboard*)context->custom; if (!clipboard) return ERROR_INTERNAL_ERROR; const UINT32 requestedFormatId = formatDataRequest->requestedFormatId; if (requestedFormatId == RegisterClipboardFormat(CFSTR_FILEDESCRIPTORW)) { const SSIZE_T res = wf_cliprdr_get_filedescriptor(clipboard, &response.requestedFormatData); if (res > 0) response.common.dataLen = (UINT32)res; } else { const SSIZE_T res = wf_cliprdr_tryopen(clipboard, requestedFormatId, &response.requestedFormatData); if (res > 0) response.common.dataLen = (UINT32)res; } response.common.msgFlags = CB_RESPONSE_OK; const UINT rc = clipboard->context->ClientFormatDataResponse(clipboard->context, &response); free(response.requestedFormatData); return rc; } /** * Function description * * @return 0 on success, otherwise a Win32 error code */ static UINT wf_cliprdr_server_format_data_response(CliprdrClientContext* context, const CLIPRDR_FORMAT_DATA_RESPONSE* formatDataResponse) { BYTE* data; HANDLE hMem; wfClipboard* clipboard; if (!context || !formatDataResponse) return ERROR_INTERNAL_ERROR; clipboard = (wfClipboard*)context->custom; if (!clipboard) return ERROR_INTERNAL_ERROR; if (formatDataResponse->common.msgFlags != CB_RESPONSE_OK) { clipboard->hmem = NULL; if (!SetEvent(clipboard->response_data_event)) return ERROR_INTERNAL_ERROR; return CHANNEL_RC_OK; } hMem = GlobalAlloc(GMEM_MOVEABLE, formatDataResponse->common.dataLen); if (!hMem) return ERROR_INTERNAL_ERROR; data = (BYTE*)GlobalLock(hMem); if (!data) { GlobalFree(hMem); return ERROR_INTERNAL_ERROR; } CopyMemory(data, formatDataResponse->requestedFormatData, formatDataResponse->common.dataLen); if (!GlobalUnlock(hMem) && GetLastError()) { GlobalFree(hMem); return ERROR_INTERNAL_ERROR; } clipboard->hmem = hMem; if (!SetEvent(clipboard->response_data_event)) return ERROR_INTERNAL_ERROR; return CHANNEL_RC_OK; } /** * Function description * * @return 0 on success, otherwise a Win32 error code */ static UINT wf_cliprdr_server_file_contents_request(CliprdrClientContext* context, const CLIPRDR_FILE_CONTENTS_REQUEST* fileContentsRequest) { DWORD uSize = 0; BYTE* pData = NULL; HRESULT hRet = S_OK; FORMATETC vFormatEtc = { 0 }; LPDATAOBJECT pDataObj = NULL; STGMEDIUM vStgMedium = { 0 }; BOOL bIsStreamFile = TRUE; static LPSTREAM pStreamStc = NULL; static UINT32 uStreamIdStc = 0; wfClipboard* clipboard; UINT rc = ERROR_INTERNAL_ERROR; UINT sRc; UINT32 cbRequested; if (!context || !fileContentsRequest) return ERROR_INTERNAL_ERROR; clipboard = (wfClipboard*)context->custom; if (!clipboard) return ERROR_INTERNAL_ERROR; cbRequested = fileContentsRequest->cbRequested; if (fileContentsRequest->dwFlags == FILECONTENTS_SIZE) cbRequested = sizeof(UINT64); pData = (BYTE*)calloc(1, cbRequested); if (!pData) goto error; hRet = OleGetClipboard(&pDataObj); if (FAILED(hRet)) { WLog_ERR(TAG, "filecontents: get ole clipboard failed."); goto error; } vFormatEtc.cfFormat = RegisterClipboardFormat(CFSTR_FILECONTENTS); vFormatEtc.tymed = TYMED_ISTREAM; vFormatEtc.dwAspect = 1; vFormatEtc.lindex = fileContentsRequest->listIndex; vFormatEtc.ptd = NULL; if ((uStreamIdStc != fileContentsRequest->streamId) || !pStreamStc) { LPENUMFORMATETC pEnumFormatEtc; ULONG CeltFetched; FORMATETC vFormatEtc2; if (pStreamStc) { IStream_Release(pStreamStc); pStreamStc = NULL; } bIsStreamFile = FALSE; hRet = IDataObject_EnumFormatEtc(pDataObj, DATADIR_GET, &pEnumFormatEtc); if (hRet == S_OK) { do { hRet = IEnumFORMATETC_Next(pEnumFormatEtc, 1, &vFormatEtc2, &CeltFetched); if (hRet == S_OK) { if (vFormatEtc2.cfFormat == RegisterClipboardFormat(CFSTR_FILECONTENTS)) { hRet = IDataObject_GetData(pDataObj, &vFormatEtc, &vStgMedium); if (hRet == S_OK) { pStreamStc = vStgMedium.pstm; uStreamIdStc = fileContentsRequest->streamId; bIsStreamFile = TRUE; } break; } } } while (hRet == S_OK); } } if (bIsStreamFile == TRUE) { if (fileContentsRequest->dwFlags == FILECONTENTS_SIZE) { STATSTG vStatStg = { 0 }; hRet = IStream_Stat(pStreamStc, &vStatStg, STATFLAG_NONAME); if (hRet == S_OK) { *((UINT32*)&pData[0]) = vStatStg.cbSize.LowPart; *((UINT32*)&pData[4]) = vStatStg.cbSize.HighPart; uSize = cbRequested; } } else if (fileContentsRequest->dwFlags == FILECONTENTS_RANGE) { LARGE_INTEGER dlibMove; ULARGE_INTEGER dlibNewPosition; dlibMove.HighPart = fileContentsRequest->nPositionHigh; dlibMove.LowPart = fileContentsRequest->nPositionLow; hRet = IStream_Seek(pStreamStc, dlibMove, STREAM_SEEK_SET, &dlibNewPosition); if (SUCCEEDED(hRet)) hRet = IStream_Read(pStreamStc, pData, cbRequested, (PULONG)&uSize); } } else { if (fileContentsRequest->dwFlags == FILECONTENTS_SIZE) { if (clipboard->nFiles <= fileContentsRequest->listIndex) goto error; *((UINT32*)&pData[0]) = clipboard->fileDescriptor[fileContentsRequest->listIndex]->nFileSizeLow; *((UINT32*)&pData[4]) = clipboard->fileDescriptor[fileContentsRequest->listIndex]->nFileSizeHigh; uSize = cbRequested; } else if (fileContentsRequest->dwFlags == FILECONTENTS_RANGE) { BOOL bRet; if (clipboard->nFiles <= fileContentsRequest->listIndex) goto error; bRet = wf_cliprdr_get_file_contents( clipboard->file_names[fileContentsRequest->listIndex], pData, fileContentsRequest->nPositionLow, fileContentsRequest->nPositionHigh, cbRequested, &uSize); if (bRet == FALSE) { WLog_ERR(TAG, "get file contents failed."); uSize = 0; goto error; } } } rc = CHANNEL_RC_OK; error: if (pDataObj) IDataObject_Release(pDataObj); if (uSize == 0) { free(pData); pData = NULL; } sRc = cliprdr_send_response_filecontents(clipboard, fileContentsRequest->streamId, uSize, pData); free(pData); if (sRc != CHANNEL_RC_OK) return sRc; return rc; } /** * Function description * * @return 0 on success, otherwise a Win32 error code */ static UINT wf_cliprdr_server_file_contents_response(CliprdrClientContext* context, const CLIPRDR_FILE_CONTENTS_RESPONSE* fileContentsResponse) { wfClipboard* clipboard; if (!context || !fileContentsResponse) return ERROR_INTERNAL_ERROR; if (fileContentsResponse->common.msgFlags != CB_RESPONSE_OK) return E_FAIL; clipboard = (wfClipboard*)context->custom; if (!clipboard) return ERROR_INTERNAL_ERROR; clipboard->req_fsize = fileContentsResponse->cbRequested; clipboard->req_fdata = (char*)malloc(fileContentsResponse->cbRequested); if (!clipboard->req_fdata) return ERROR_INTERNAL_ERROR; CopyMemory(clipboard->req_fdata, fileContentsResponse->requestedData, fileContentsResponse->cbRequested); if (!SetEvent(clipboard->req_fevent)) { free(clipboard->req_fdata); return ERROR_INTERNAL_ERROR; } return CHANNEL_RC_OK; } BOOL wf_cliprdr_init(wfContext* wfc, CliprdrClientContext* cliprdr) { wfClipboard* clipboard; rdpContext* context = (rdpContext*)wfc; if (!context || !cliprdr) return FALSE; wfc->clipboard = (wfClipboard*)calloc(1, sizeof(wfClipboard)); if (!wfc->clipboard) return FALSE; clipboard = wfc->clipboard; clipboard->wfc = wfc; clipboard->context = cliprdr; clipboard->channels = context->channels; clipboard->sync = FALSE; clipboard->map_capacity = 32; clipboard->map_size = 0; clipboard->hUser32 = LoadLibraryA("user32.dll"); if (clipboard->hUser32) { clipboard->AddClipboardFormatListener = GetProcAddressAs( clipboard->hUser32, "AddClipboardFormatListener", fnAddClipboardFormatListener); clipboard->RemoveClipboardFormatListener = GetProcAddressAs( clipboard->hUser32, "RemoveClipboardFormatListener", fnRemoveClipboardFormatListener); clipboard->GetUpdatedClipboardFormats = GetProcAddressAs( clipboard->hUser32, "GetUpdatedClipboardFormats", fnGetUpdatedClipboardFormats); } if (!(clipboard->hUser32 && clipboard->AddClipboardFormatListener && clipboard->RemoveClipboardFormatListener && clipboard->GetUpdatedClipboardFormats)) clipboard->legacyApi = TRUE; if (!(clipboard->format_mappings = (formatMapping*)calloc(clipboard->map_capacity, sizeof(formatMapping)))) goto error; if (!(clipboard->response_data_event = CreateEvent(NULL, TRUE, FALSE, NULL))) goto error; if (!(clipboard->req_fevent = CreateEvent(NULL, TRUE, FALSE, NULL))) goto error; if (!(clipboard->thread = CreateThread(NULL, 0, cliprdr_thread_func, clipboard, 0, NULL))) goto error; cliprdr->MonitorReady = wf_cliprdr_monitor_ready; cliprdr->ServerCapabilities = wf_cliprdr_server_capabilities; cliprdr->ServerFormatList = wf_cliprdr_server_format_list; cliprdr->ServerFormatListResponse = wf_cliprdr_server_format_list_response; cliprdr->ServerLockClipboardData = wf_cliprdr_server_lock_clipboard_data; cliprdr->ServerUnlockClipboardData = wf_cliprdr_server_unlock_clipboard_data; cliprdr->ServerFormatDataRequest = wf_cliprdr_server_format_data_request; cliprdr->ServerFormatDataResponse = wf_cliprdr_server_format_data_response; cliprdr->ServerFileContentsRequest = wf_cliprdr_server_file_contents_request; cliprdr->ServerFileContentsResponse = wf_cliprdr_server_file_contents_response; cliprdr->custom = (void*)wfc->clipboard; return TRUE; error: wf_cliprdr_uninit(wfc, cliprdr); return FALSE; } BOOL wf_cliprdr_uninit(wfContext* wfc, CliprdrClientContext* cliprdr) { wfClipboard* clipboard; if (!wfc || !cliprdr) return FALSE; clipboard = wfc->clipboard; if (!clipboard) return FALSE; cliprdr->custom = NULL; if (clipboard->hwnd) PostMessage(clipboard->hwnd, WM_QUIT, 0, 0); if (clipboard->thread) { WaitForSingleObject(clipboard->thread, INFINITE); CloseHandle(clipboard->thread); } if (clipboard->response_data_event) CloseHandle(clipboard->response_data_event); if (clipboard->req_fevent) CloseHandle(clipboard->req_fevent); clear_file_array(clipboard); clear_format_map(clipboard); free(clipboard->format_mappings); free(clipboard); return TRUE; }