dlls/urlmon/umstream.c

   1 /*
   2  * Based on ../shell32/memorystream.c
   3  *
   4  * Copyright 1999 Juergen Schmied
   5  * Copyright 2003 Mike McCormack for CodeWeavers
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include <stdarg.h>
  23
  24 #define COBJMACROS
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "winreg.h"
  29 #include "winternl.h"
  30 #include "winuser.h"
  31 #include "objbase.h"
  32 #include "wine/debug.h"
  33 #include "wine/unicode.h"
  34 #include "ole2.h"
  35 #include "urlmon.h"
  36 #include "wininet.h"
  37 #include "shlwapi.h"
  38 #include "urlmon_main.h"
  39
  40 WINE_DEFAULT_DEBUG_CHANNEL(urlmon);
  41
  42 static const IStreamVtbl stvt;
  43
  44 HRESULT UMCreateStreamOnCacheFile(LPCWSTR pszURL,
  45                                   DWORD dwSize,
  46                                   LPWSTR pszFileName,
  47                                   HANDLE *phfile,
  48                                   IUMCacheStream **ppstr)
  49 {
  50     IUMCacheStream* ucstr;
  51     HANDLE handle;
  52     LPWSTR ext;
  53     LPCWSTR c;
  54     LPCWSTR eloc = 0;
  55     HRESULT hr;
  56
  57     for (c = pszURL; *c && *c != '#' && *c != '?'; ++c)
  58     {
  59         if (*c == '.')
  60            eloc = c + 1;
  61         else if (*c == '/' || *c == '\\')
  62            eloc = 0;
  63     }
  64
  65     if (!eloc)
  66        eloc = c;
  67
  68     ext = HeapAlloc(GetProcessHeap(), 0, sizeof(WCHAR) * (c - eloc + 1));
  69     memcpy(ext, eloc, sizeof(WCHAR) * (c - eloc));
  70     ext[c - eloc] = 0;
  71
  72     if(!CreateUrlCacheEntryW(pszURL, dwSize, ext, pszFileName, 0))
  73        hr = HRESULT_FROM_WIN32(GetLastError());
  74     else
  75        hr = 0;
  76
  77     HeapFree(GetProcessHeap(), 0, ext);
  78
  79     if (hr)
  80        return hr;
  81
  82     TRACE("Opening %s\n", debugstr_w(pszFileName) );
  83
  84     handle = CreateFileW( pszFileName, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, CREATE_ALWAYS, 0, NULL );
  85     if( handle == INVALID_HANDLE_VALUE )
  86        return HRESULT_FROM_WIN32(GetLastError());
  87
  88     if (phfile)
  89     {
  90        /* Call CreateFileW again because we need a handle with its own file pointer, and DuplicateHandle will return
  91         * a handle that shares its file pointer with the original.
  92         */
  93            *phfile = CreateFileW( pszFileName, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL );
  94
  95        if (*phfile == (HANDLE) HFILE_ERROR)
  96        {
  97            DWORD dwError = GetLastError();
  98
  99            CloseHandle(handle);
 100            return HRESULT_FROM_WIN32(dwError);
 101        }
 102     }
 103
 104     ucstr = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,sizeof(IUMCacheStream));
 105     if(ucstr )
 106     {
 107        ucstr->pszURL = HeapAlloc(GetProcessHeap(),
 108                                  HEAP_ZERO_MEMORY,
 109                                  sizeof(WCHAR) * (lstrlenW(pszURL) + 1));
 110        if (ucstr->pszURL)
 111        {
 112             ucstr->pszFileName = HeapAlloc(GetProcessHeap(),
 113                                            HEAP_ZERO_MEMORY,
 114                                            sizeof(WCHAR) * (lstrlenW(pszFileName) + 1));
 115            if (ucstr->pszFileName)
 116            {
 117               ucstr->lpVtbl=&stvt;
 118               ucstr->ref = 1;
 119               ucstr->handle = handle;
 120               ucstr->closed = 0;
 121               lstrcpyW(ucstr->pszURL, pszURL);
 122               lstrcpyW(ucstr->pszFileName, pszFileName);
 123
 124               *ppstr = ucstr;
 125
 126               return S_OK;
 127            }
 128            HeapFree(GetProcessHeap(), 0, ucstr->pszURL);
 129        }
 130        HeapFree(GetProcessHeap(), 0, ucstr);
 131     }
 132     CloseHandle(handle);
 133     if (phfile)
 134        CloseHandle(*phfile);
 135     return E_OUTOFMEMORY;
 136 }
 137
 138 void UMCloseCacheFileStream(IUMCacheStream *This)
 139 {
 140     if (!This->closed)
 141     {
 142        FILETIME ftZero;
 143
 144        ftZero.dwLowDateTime = ftZero.dwHighDateTime = 0;
 145
 146        This->closed = 1;
 147        CommitUrlCacheEntryW(This->pszURL,
 148                             This->pszFileName,
 149                             ftZero,
 150                             ftZero,
 151                             NORMAL_CACHE_ENTRY,
 152                             0,
 153                             0,
 154                             0,
 155                             0);
 156     }
 157 }
 158
 159 /**************************************************************************
 160 *  IStream_fnQueryInterface
 161 */
 162 static HRESULT WINAPI IStream_fnQueryInterface(IStream *iface,
 163                                                REFIID riid,
 164                                                LPVOID *ppvObj)
 165 {
 166     IUMCacheStream *This = (IUMCacheStream *)iface;
 167
 168     TRACE("(%p)->(\n\tIID:\t%s,%p)\n",This,debugstr_guid(riid),ppvObj);
 169
 170     *ppvObj = NULL;
 171
 172     if(IsEqualIID(riid, &IID_IUnknown) ||
 173        IsEqualIID(riid, &IID_IStream))
 174     {
 175       *ppvObj = This;
 176     }
 177
 178     if(*ppvObj)
 179     {
 180       IStream_AddRef((IStream*)*ppvObj);
 181       TRACE("-- Interface: (%p)->(%p)\n",ppvObj,*ppvObj);
 182       return S_OK;
 183     }
 184     TRACE("-- Interface: E_NOINTERFACE\n");
 185     return E_NOINTERFACE;
 186 }
 187
 188 /**************************************************************************
 189 *  IStream_fnAddRef
 190 */
 191 static ULONG WINAPI IStream_fnAddRef(IStream *iface)
 192 {
 193     IUMCacheStream *This = (IUMCacheStream *)iface;
 194     ULONG refCount = InterlockedIncrement(&This->ref);
 195
 196     TRACE("(%p)->(count=%lu)\n", This, refCount - 1);
 197
 198     return refCount;
 199 }
 200
 201 /**************************************************************************
 202 *  IStream_fnRelease
 203 */
 204 static ULONG WINAPI IStream_fnRelease(IStream *iface)
 205 {
 206     IUMCacheStream *This = (IUMCacheStream *)iface;
 207     ULONG refCount = InterlockedDecrement(&This->ref);
 208
 209     TRACE("(%p)->(count=%lu)\n", This, refCount + 1);
 210
 211     if (!refCount)
 212     {
 213        TRACE(" destroying UMCacheStream (%p)\n",This);
 214        UMCloseCacheFileStream(This);
 215        CloseHandle(This->handle);
 216        HeapFree(GetProcessHeap(), 0, This->pszFileName);
 217        HeapFree(GetProcessHeap(), 0, This->pszURL);
 218        HeapFree(GetProcessHeap(),0,This);
 219     }
 220     return refCount;
 221 }
 222
 223 static HRESULT WINAPI IStream_fnRead (IStream * iface,
 224                                       void* pv,
 225                                       ULONG cb,
 226                                       ULONG* pcbRead)
 227 {
 228     ULONG dwBytesRead;
 229     IUMCacheStream *This = (IUMCacheStream *)iface;
 230
 231     TRACE("(%p)->(%p,0x%08lx,%p)\n",This, pv, cb, pcbRead);
 232
 233     if ( !pv )
 234        return STG_E_INVALIDPOINTER;
 235
 236     if ( !pcbRead)
 237         pcbRead = &dwBytesRead;
 238
 239     if ( ! ReadFile( This->handle, pv, cb, (LPDWORD)pcbRead, NULL ) )
 240        return S_FALSE;
 241
 242     if (!*pcbRead)
 243         return This->closed ? S_FALSE : E_PENDING;
 244     return S_OK;
 245 }
 246
 247 static HRESULT WINAPI IStream_fnWrite (IStream * iface,
 248                                        const void* pv,
 249                                        ULONG cb,
 250                                        ULONG* pcbWritten)
 251 {
 252     return E_NOTIMPL;
 253 }
 254
 255 static HRESULT WINAPI IStream_fnSeek (IStream * iface,
 256                                    LARGE_INTEGER dlibMove,
 257                                    DWORD dwOrigin,
 258                                    ULARGE_INTEGER* plibNewPosition)
 259 {
 260     LARGE_INTEGER newpos;
 261     IUMCacheStream *This = (IUMCacheStream *)iface;
 262
 263     TRACE("(%p)\n",This);
 264
 265     if (!SetFilePointerEx( This->handle, dlibMove, &newpos, dwOrigin ))
 266        return E_FAIL;
 267
 268     if (plibNewPosition)
 269         plibNewPosition->QuadPart = newpos.QuadPart;
 270
 271     return S_OK;
 272 }
 273
 274 static HRESULT WINAPI IStream_fnSetSize (IStream * iface,
 275                                          ULARGE_INTEGER libNewSize)
 276 {
 277     LARGE_INTEGER newpos;
 278     IUMCacheStream *This = (IUMCacheStream *)iface;
 279
 280     TRACE("(%p)\n",This);
 281
 282     newpos.QuadPart = libNewSize.QuadPart;
 283     if( ! SetFilePointerEx( This->handle, newpos, NULL, FILE_BEGIN ) )
 284        return E_FAIL;
 285
 286     if( ! SetEndOfFile( This->handle ) )
 287        return E_FAIL;
 288
 289     return S_OK;
 290 }
 291
 292 static HRESULT WINAPI IStream_fnCopyTo (IStream * iface,
 293                                    IStream* pstm,
 294                                    ULARGE_INTEGER cb,
 295                                    ULARGE_INTEGER* pcbRead,
 296                                    ULARGE_INTEGER* pcbWritten)
 297 {
 298     IUMCacheStream *This = (IUMCacheStream *)iface;
 299
 300     TRACE("(%p)\n",This);
 301
 302     return E_NOTIMPL;
 303 }
 304
 305 static HRESULT WINAPI IStream_fnCommit (IStream * iface,
 306                                    DWORD grfCommitFlags)
 307 {
 308     IUMCacheStream *This = (IUMCacheStream *)iface;
 309
 310     TRACE("(%p)\n",This);
 311
 312     return E_NOTIMPL;
 313 }
 314
 315 static HRESULT WINAPI IStream_fnRevert (IStream * iface)
 316 {
 317     IUMCacheStream *This = (IUMCacheStream *)iface;
 318
 319     TRACE("(%p)\n",This);
 320
 321     return E_NOTIMPL;
 322 }
 323 static HRESULT WINAPI IStream_fnLockRegion (IStream * iface,
 324                                             ULARGE_INTEGER libOffset,
 325                                             ULARGE_INTEGER cb,
 326                                             DWORD dwLockType)
 327 {
 328     IUMCacheStream *This = (IUMCacheStream *)iface;
 329
 330     TRACE("(%p)\n",This);
 331
 332     return E_NOTIMPL;
 333 }
 334 static HRESULT WINAPI IStream_fnUnlockRegion (IStream * iface,
 335                                               ULARGE_INTEGER libOffset,
 336                                               ULARGE_INTEGER cb,
 337                                               DWORD dwLockType)
 338 {
 339     IUMCacheStream *This = (IUMCacheStream *)iface;
 340
 341     TRACE("(%p)\n",This);
 342
 343     return E_NOTIMPL;
 344 }
 345 static HRESULT WINAPI IStream_fnStat (IStream * iface,
 346                                       STATSTG*   pstatstg,
 347                                       DWORD grfStatFlag)
 348 {
 349     IUMCacheStream *This = (IUMCacheStream *)iface;
 350
 351     TRACE("(%p)\n",This);
 352
 353     return E_NOTIMPL;
 354 }
 355 static HRESULT WINAPI IStream_fnClone (IStream * iface,
 356                                        IStream** ppstm)
 357 {
 358     IUMCacheStream *This = (IUMCacheStream *)iface;
 359
 360     TRACE("(%p)\n",This);
 361
 362     return E_NOTIMPL;
 363 }
 364
 365 static const IStreamVtbl stvt =
 366 {
 367     IStream_fnQueryInterface,
 368     IStream_fnAddRef,
 369     IStream_fnRelease,
 370     IStream_fnRead,
 371     IStream_fnWrite,
 372     IStream_fnSeek,
 373     IStream_fnSetSize,
 374     IStream_fnCopyTo,
 375     IStream_fnCommit,
 376     IStream_fnRevert,
 377     IStream_fnLockRegion,
 378     IStream_fnUnlockRegion,
 379     IStream_fnStat,
 380     IStream_fnClone
 381
 382 };