You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
413 lines
10 KiB
413 lines
10 KiB
#include "shellprv.h"
|
|
|
|
|
|
class CLocalCopyHelper : public ILocalCopy
|
|
, public IItemHandler
|
|
{
|
|
public:
|
|
CLocalCopyHelper();
|
|
|
|
// IUnknown methods
|
|
STDMETHODIMP QueryInterface(REFIID riid, void **ppv);
|
|
STDMETHODIMP_(ULONG) AddRef () ;
|
|
STDMETHODIMP_(ULONG) Release ();
|
|
|
|
// ILocalCopy methods
|
|
STDMETHODIMP Download(LCFLAGS flags, IBindCtx *pbc, LPWSTR *ppszOut);
|
|
STDMETHODIMP Upload(LCFLAGS flags, IBindCtx *pbc);
|
|
|
|
// IPersist
|
|
STDMETHODIMP GetClassID(CLSID *pclsid) { *pclsid = CLSID_LocalCopyHelper; return S_OK;}
|
|
|
|
// IItemHandler
|
|
STDMETHODIMP SetItem(IShellItem *psi);
|
|
STDMETHODIMP GetItem(IShellItem **ppsi);
|
|
|
|
protected:
|
|
~CLocalCopyHelper();
|
|
|
|
// private methods
|
|
HRESULT _InitCacheEntry(void);
|
|
HRESULT _SetCacheName(void);
|
|
HRESULT _FinishLocal(BOOL fReadOnly);
|
|
HRESULT _GetLocalStream(DWORD grfMode, IStream **ppstm, FILETIME *pft);
|
|
HRESULT _GetRemoteStream(DWORD grfMode, IBindCtx *pbc, IStream **ppstm, FILETIME *pft);
|
|
|
|
// members
|
|
long _cRef;
|
|
IShellItem *_psi;
|
|
LPWSTR _pszName; // name retrieved from psi
|
|
LPWSTR _pszCacheName; // name used to ID cache entry
|
|
LPCWSTR _pszExt; // points into _pszName
|
|
|
|
// caches of the MTIMEs for the streams
|
|
FILETIME _ftRemoteGet;
|
|
FILETIME _ftLocalGet;
|
|
FILETIME _ftRemoteCommit;
|
|
FILETIME _ftLocalCommit;
|
|
|
|
BOOL _fIsLocalFile; // this is actually file system item (pszName is a FS path)
|
|
BOOL _fMadeLocal; // we have already copied this item locally
|
|
|
|
// put this at the end so we can see all the rest of the pointers easily in debug
|
|
WCHAR _szLocalPath[MAX_PATH];
|
|
};
|
|
|
|
CLocalCopyHelper::CLocalCopyHelper() : _cRef(1)
|
|
{
|
|
}
|
|
|
|
CLocalCopyHelper::~CLocalCopyHelper()
|
|
{
|
|
ATOMICRELEASE(_psi);
|
|
|
|
if (_pszName)
|
|
CoTaskMemFree(_pszName);
|
|
|
|
if (_pszCacheName)
|
|
LocalFree(_pszCacheName);
|
|
}
|
|
|
|
STDMETHODIMP CLocalCopyHelper::QueryInterface(REFIID riid, void **ppv)
|
|
{
|
|
static const QITAB qit[] =
|
|
{
|
|
QITABENT(CLocalCopyHelper, ILocalCopy),
|
|
QITABENT(CLocalCopyHelper, IItemHandler),
|
|
QITABENTMULTI(CLocalCopyHelper, IPersist, IItemHandler),
|
|
{ 0 },
|
|
};
|
|
|
|
return QISearch(this, qit, riid, ppv);
|
|
}
|
|
|
|
STDMETHODIMP_(ULONG) CLocalCopyHelper::AddRef()
|
|
{
|
|
return InterlockedIncrement(&_cRef);
|
|
}
|
|
|
|
STDMETHODIMP_(ULONG) CLocalCopyHelper::Release()
|
|
{
|
|
ASSERT( 0 != _cRef );
|
|
ULONG cRef = InterlockedDecrement(&_cRef);
|
|
if ( 0 == cRef )
|
|
{
|
|
delete this;
|
|
}
|
|
return cRef;
|
|
}
|
|
|
|
STDMETHODIMP CLocalCopyHelper::SetItem(IShellItem *psi)
|
|
{
|
|
if (!_psi)
|
|
{
|
|
SFGAOF flags = SFGAO_STREAM;
|
|
if (SUCCEEDED(psi->GetAttributes(flags, &flags))
|
|
&& (flags & SFGAO_STREAM))
|
|
{
|
|
HRESULT hr = psi->GetDisplayName(SIGDN_FILESYSPATH, &_pszName);
|
|
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
_fIsLocalFile = TRUE;
|
|
}
|
|
else
|
|
hr = psi->GetDisplayName(SIGDN_PARENTRELATIVEEDITING, &_pszName);
|
|
|
|
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
_psi = psi;
|
|
_psi->AddRef();
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
}
|
|
return E_UNEXPECTED;
|
|
}
|
|
|
|
STDMETHODIMP CLocalCopyHelper::GetItem(IShellItem **ppsi)
|
|
{
|
|
*ppsi = _psi;
|
|
|
|
if (_psi)
|
|
{
|
|
_psi->AddRef();
|
|
return S_OK;
|
|
}
|
|
else
|
|
return E_UNEXPECTED;
|
|
}
|
|
|
|
#define SZTEMPURL TEXTW("temp:")
|
|
#define CCHTEMPURL SIZECHARS(SZTEMPURL) -1
|
|
|
|
HRESULT CLocalCopyHelper::_SetCacheName(void)
|
|
{
|
|
ASSERT(!_pszCacheName);
|
|
int cchCacheName = lstrlenW(_pszName) + CCHTEMPURL + 1;
|
|
_pszCacheName = (LPWSTR) LocalAlloc(LPTR, CbFromCchW(cchCacheName));
|
|
|
|
if (_pszCacheName)
|
|
{
|
|
LPCWSTR pszName = _pszName;
|
|
|
|
StringCchCopy(_pszCacheName, cchCacheName, SZTEMPURL);
|
|
StringCchCat(_pszCacheName, cchCacheName, _pszName);
|
|
|
|
if (UrlIs(_pszName, URLIS_URL))
|
|
{
|
|
// need to push past all slashes
|
|
pszName = StrRChr(pszName, NULL, TEXT('/'));
|
|
}
|
|
|
|
// the cache APIs need the extension without the dot
|
|
if (pszName)
|
|
{
|
|
_pszExt = PathFindExtension(pszName);
|
|
|
|
if (*_pszExt)
|
|
_pszExt++;
|
|
}
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
return E_OUTOFMEMORY;
|
|
}
|
|
|
|
void _GetMTime(IStream *pstm, FILETIME *pft)
|
|
{
|
|
// see if we can get an accurate Mod time
|
|
STATSTG stat;
|
|
if (S_OK == pstm->Stat(&stat, STATFLAG_NONAME))
|
|
*pft = stat.mtime;
|
|
else
|
|
{
|
|
GetSystemTimeAsFileTime(pft);
|
|
}
|
|
}
|
|
|
|
HRESULT CLocalCopyHelper::_InitCacheEntry(void)
|
|
{
|
|
if (!_pszCacheName)
|
|
{
|
|
HRESULT hr = _SetCacheName();
|
|
|
|
if (SUCCEEDED(hr) && !CreateUrlCacheEntryW(_pszCacheName, 0, _pszExt, _szLocalPath, 0))
|
|
{
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
LocalFree(_pszCacheName);
|
|
_pszCacheName = NULL;
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
return S_OK;
|
|
}
|
|
|
|
HRESULT CLocalCopyHelper::_GetLocalStream(DWORD grfMode, IStream **ppstm, FILETIME *pft)
|
|
{
|
|
HRESULT hr = _InitCacheEntry();
|
|
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
hr = SHCreateStreamOnFileW(_szLocalPath, grfMode, ppstm);
|
|
|
|
if (SUCCEEDED(hr))
|
|
_GetMTime(*ppstm, pft);
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
HRESULT CLocalCopyHelper::_FinishLocal(BOOL fReadOnly)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
FILETIME ftExp = {0};
|
|
|
|
if (CommitUrlCacheEntryW(_pszCacheName, _szLocalPath, ftExp, _ftLocalGet, STICKY_CACHE_ENTRY, NULL, 0, NULL, NULL))
|
|
{
|
|
// we could also check _GetRemoteStream(STGM_WRITE)
|
|
// and if it fails we could fail this as well.
|
|
if (fReadOnly)
|
|
SetFileAttributesW(_szLocalPath, FILE_ATTRIBUTE_READONLY);
|
|
}
|
|
else
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
|
|
return hr;
|
|
}
|
|
|
|
|
|
HRESULT CLocalCopyHelper::_GetRemoteStream(DWORD grfMode, IBindCtx *pbc, IStream **ppstm, FILETIME *pft)
|
|
{
|
|
HRESULT hr = E_OUTOFMEMORY;
|
|
if (!pbc)
|
|
CreateBindCtx(0, &pbc);
|
|
else
|
|
pbc->AddRef();
|
|
|
|
if (pbc)
|
|
{
|
|
BIND_OPTS bo = {sizeof(bo)}; // Requires size filled in.
|
|
if (SUCCEEDED(pbc->GetBindOptions(&bo)))
|
|
{
|
|
bo.grfMode = grfMode;
|
|
pbc->SetBindOptions(&bo);
|
|
}
|
|
|
|
hr = _psi->BindToHandler(pbc, BHID_Storage, IID_PPV_ARG(IStream, ppstm));
|
|
|
|
if (SUCCEEDED(hr))
|
|
_GetMTime(*ppstm, pft);
|
|
|
|
pbc->Release();
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
STDMETHODIMP CLocalCopyHelper::Download(LCFLAGS flags, IBindCtx *pbc, LPWSTR *ppsz)
|
|
{
|
|
if (!_psi)
|
|
return E_UNEXPECTED;
|
|
|
|
HRESULT hr;
|
|
if (_fIsLocalFile)
|
|
{
|
|
hr = SHStrDup(_pszName, ppsz);
|
|
}
|
|
else if (_fMadeLocal && !(flags & LC_FORCEROUNDTRIP))
|
|
{
|
|
hr = S_OK;
|
|
}
|
|
else if (flags & LC_SAVEAS)
|
|
{
|
|
hr = _InitCacheEntry();
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
_fMadeLocal = TRUE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// get the local stream first because it is the cheapest operation.
|
|
IStream *pstmDst;
|
|
hr = _GetLocalStream(STGM_WRITE, &pstmDst, &_ftLocalGet);
|
|
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
// we need to create the temp file here
|
|
IStream *pstmSrc;
|
|
|
|
hr = _GetRemoteStream(STGM_READ, pbc, &pstmSrc, &_ftRemoteGet);
|
|
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
hr = CopyStreamUI(pstmSrc, pstmDst, NULL, 0);
|
|
|
|
pstmSrc->Release();
|
|
// now that we have copied the stream
|
|
|
|
}
|
|
|
|
pstmDst->Release();
|
|
|
|
// need to release teh dest stream first
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
// finish cleaning up the local file
|
|
hr = _FinishLocal(flags & LCDOWN_READONLY);
|
|
_fMadeLocal = SUCCEEDED(hr);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
if (_fMadeLocal)
|
|
{
|
|
ASSERT(SUCCEEDED(hr));
|
|
hr = SHStrDup(_szLocalPath, ppsz);
|
|
}
|
|
else
|
|
ASSERT(_fIsLocalFile || FAILED(hr));
|
|
|
|
|
|
return hr;
|
|
}
|
|
|
|
STDMETHODIMP CLocalCopyHelper::Upload(LCFLAGS flags, IBindCtx *pbc)
|
|
{
|
|
if (!_psi)
|
|
return E_UNEXPECTED;
|
|
|
|
HRESULT hr = S_OK;
|
|
if (!_fIsLocalFile)
|
|
{
|
|
// get the local stream first because it is the cheapest operation.
|
|
IStream *pstmSrc;
|
|
hr = _GetLocalStream(STGM_READ, &pstmSrc, &_ftLocalCommit);
|
|
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
DWORD stgmRemote = STGM_WRITE;
|
|
|
|
if (flags & LC_SAVEAS)
|
|
{
|
|
hr = _FinishLocal(FALSE);
|
|
stgmRemote |= STGM_CREATE;
|
|
}
|
|
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
IStream *pstmDst;
|
|
hr = _GetRemoteStream(stgmRemote, pbc, &pstmDst, &_ftRemoteCommit);
|
|
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
// we only bother copying when the local copy changed
|
|
// or caller forces us to.
|
|
//
|
|
// FEATURE - UI needs to handle when the remot changes
|
|
// if the remote copy changes while the local
|
|
// copy is being updated we will overwrite the remote copy
|
|
// local changes WIN!
|
|
//
|
|
|
|
if (flags & LC_FORCEROUNDTRIP || 0 != CompareFileTime(&_ftLocalCommit, &_ftLocalGet))
|
|
hr = CopyStreamUI(pstmSrc, pstmDst, NULL, 0);
|
|
else
|
|
hr = S_FALSE;
|
|
|
|
pstmDst->Release();
|
|
}
|
|
|
|
}
|
|
|
|
pstmSrc->Release();
|
|
}
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
STDAPI CLocalCopyHelper_CreateInstance(IUnknown *punkOuter, REFIID riid, void **ppv)
|
|
{
|
|
HRESULT hr;
|
|
CLocalCopyHelper * p = new CLocalCopyHelper();
|
|
|
|
if (p)
|
|
{
|
|
hr = p->QueryInterface(riid, ppv);
|
|
p->Release();
|
|
}
|
|
else
|
|
{
|
|
*ppv = NULL;
|
|
hr = E_OUTOFMEMORY;
|
|
}
|
|
return hr;
|
|
}
|
|
|