dlls/msi/streams.c

   1 /*
   2  * Implementation of the Microsoft Installer (msi.dll)
   3  *
   4  * Copyright 2007 James Hawkins
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <stdarg.h>
  22
  23 #define COBJMACROS
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "winerror.h"
  28 #include "msi.h"
  29 #include "msiquery.h"
  30 #include "objbase.h"
  31 #include "msipriv.h"
  32
  33 #include "wine/debug.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(msidb);
  36
  37 #define NUM_STREAMS_COLS    2
  38 #define MAX_STREAM_NAME_LEN 62
  39
  40 typedef struct tabSTREAM
  41 {
  42     int str_index;
  43     LPWSTR name;
  44     IStream *stream;
  45 } STREAM;
  46
  47 typedef struct tagMSISTREAMSVIEW
  48 {
  49     MSIVIEW view;
  50     MSIDATABASE *db;
  51     STREAM **streams;
  52     UINT max_streams;
  53     UINT num_rows;
  54     UINT row_size;
  55 } MSISTREAMSVIEW;
  56
  57 static BOOL add_stream_to_table(MSISTREAMSVIEW *sv, STREAM *stream, int index)
  58 {
  59     if (index >= sv->max_streams)
  60     {
  61         sv->max_streams *= 2;
  62         sv->streams = msi_realloc(sv->streams, sv->max_streams * sizeof(STREAM *));
  63         if (!sv->streams)
  64             return FALSE;
  65     }
  66
  67     sv->streams[index] = stream;
  68     return TRUE;
  69 }
  70
  71 static STREAM *create_stream(MSISTREAMSVIEW *sv, LPWSTR name, BOOL encoded, IStream *stm)
  72 {
  73     STREAM *stream;
  74     WCHAR decoded[MAX_STREAM_NAME_LEN];
  75     LPWSTR ptr = name;
  76
  77     stream = msi_alloc(sizeof(STREAM));
  78     if (!stream)
  79         return NULL;
  80
  81     if (encoded)
  82     {
  83         decode_streamname(name, decoded);
  84         ptr = decoded;
  85         TRACE("stream -> %s %s\n", debugstr_w(name), debugstr_w(decoded));
  86     }
  87
  88     stream->name = strdupW(ptr);
  89     if (!stream->name)
  90     {
  91         msi_free(stream);
  92         return NULL;
  93     }
  94
  95     stream->str_index = msi_addstringW(sv->db->strings, 0, stream->name, -1, 1, StringNonPersistent);
  96     stream->stream = stm;
  97     return stream;
  98 }
  99
 100 static UINT STREAMS_fetch_int(struct tagMSIVIEW *view, UINT row, UINT col, UINT *val)
 101 {
 102     MSISTREAMSVIEW *sv = (MSISTREAMSVIEW *)view;
 103
 104     TRACE("(%p, %d, %d, %p)\n", view, row, col, val);
 105
 106     if (col != 1)
 107         return ERROR_INVALID_PARAMETER;
 108
 109     if (row >= sv->num_rows)
 110         return ERROR_NO_MORE_ITEMS;
 111
 112     *val = sv->streams[row]->str_index;
 113
 114     return ERROR_SUCCESS;
 115 }
 116
 117 static UINT STREAMS_fetch_stream(struct tagMSIVIEW *view, UINT row, UINT col, IStream **stm)
 118 {
 119     MSISTREAMSVIEW *sv = (MSISTREAMSVIEW *)view;
 120
 121     TRACE("(%p, %d, %d, %p)\n", view, row, col, stm);
 122
 123     if (row >= sv->num_rows)
 124         return ERROR_FUNCTION_FAILED;
 125
 126     IStream_AddRef(sv->streams[row]->stream);
 127     *stm = sv->streams[row]->stream;
 128
 129     return ERROR_SUCCESS;
 130 }
 131
 132 static UINT STREAMS_set_row(struct tagMSIVIEW *view, UINT row, MSIRECORD *rec, UINT mask)
 133 {
 134     FIXME("(%p, %d, %p, %d): stub!\n", view, row, rec, mask);
 135     return ERROR_SUCCESS;
 136 }
 137
 138 static UINT STREAMS_insert_row(struct tagMSIVIEW *view, MSIRECORD *rec, BOOL temporary)
 139 {
 140     MSISTREAMSVIEW *sv = (MSISTREAMSVIEW *)view;
 141     STREAM *stream;
 142     IStream *stm;
 143     STATSTG stat;
 144     LPWSTR name = NULL;
 145     USHORT *data = NULL;
 146     HRESULT hr;
 147     ULONG count;
 148     UINT r = ERROR_FUNCTION_FAILED;
 149
 150     TRACE("(%p, %p, %d)\n", view, rec, temporary);
 151
 152     r = MSI_RecordGetIStream(rec, 2, &stm);
 153     if (r != ERROR_SUCCESS)
 154         return r;
 155
 156     hr = IStream_Stat(stm, &stat, STATFLAG_NONAME);
 157     if (FAILED(hr))
 158     {
 159         WARN("failed to stat stream: %08x\n", hr);
 160         goto done;
 161     }
 162
 163     if (stat.cbSize.QuadPart >> 32)
 164         goto done;
 165
 166     data = msi_alloc(stat.cbSize.QuadPart);
 167     if (!data)
 168         goto done;
 169
 170     hr = IStream_Read(stm, data, stat.cbSize.QuadPart, &count);
 171     if (FAILED(hr) || count != stat.cbSize.QuadPart)
 172     {
 173         WARN("failed to read stream: %08x\n", hr);
 174         goto done;
 175     }
 176
 177     name = strdupW(MSI_RecordGetString(rec, 1));
 178     if (!name)
 179         goto done;
 180
 181     r = write_stream_data(sv->db->storage, name, data, count, FALSE);
 182     if (r != ERROR_SUCCESS)
 183     {
 184         WARN("failed to write stream data: %d\n", r);
 185         goto done;
 186     }
 187
 188     stream = create_stream(sv, name, FALSE, NULL);
 189     if (!stream)
 190         goto done;
 191
 192     IStorage_OpenStream(sv->db->storage, name, 0,
 193                         STGM_READ | STGM_SHARE_EXCLUSIVE, 0, &stream->stream);
 194
 195     if (!add_stream_to_table(sv, stream, sv->num_rows++))
 196         goto done;
 197
 198 done:
 199     msi_free(name);
 200     msi_free(data);
 201
 202     IStream_Release(stm);
 203
 204     return r;
 205 }
 206
 207 static UINT STREAMS_execute(struct tagMSIVIEW *view, MSIRECORD *record)
 208 {
 209     TRACE("(%p, %p)\n", view, record);
 210     return ERROR_SUCCESS;
 211 }
 212
 213 static UINT STREAMS_close(struct tagMSIVIEW *view)
 214 {
 215     TRACE("(%p)\n", view);
 216     return ERROR_SUCCESS;
 217 }
 218
 219 static UINT STREAMS_get_dimensions(struct tagMSIVIEW *view, UINT *rows, UINT *cols)
 220 {
 221     MSISTREAMSVIEW *sv = (MSISTREAMSVIEW *)view;
 222
 223     TRACE("(%p, %p, %p)\n", view, rows, cols);
 224
 225     if (cols) *cols = NUM_STREAMS_COLS;
 226     if (rows) *rows = sv->num_rows;
 227
 228     return ERROR_SUCCESS;
 229 }
 230
 231 static UINT STREAMS_get_column_info(struct tagMSIVIEW *view,
 232                                     UINT n, LPWSTR *name, UINT *type)
 233 {
 234     LPCWSTR name_ptr = NULL;
 235
 236     static const WCHAR Name[] = {'N','a','m','e',0};
 237     static const WCHAR Data[] = {'D','a','t','a',0};
 238
 239     TRACE("(%p, %d, %p, %p)\n", view, n, name, type);
 240
 241     if (n == 0 || n > NUM_STREAMS_COLS)
 242         return ERROR_INVALID_PARAMETER;
 243
 244     switch (n)
 245     {
 246     case 1:
 247         name_ptr = Name;
 248         if (type) *type = MSITYPE_STRING | MAX_STREAM_NAME_LEN;
 249         break;
 250
 251     case 2:
 252         name_ptr = Data;
 253         if (type) *type = MSITYPE_STRING | MSITYPE_VALID | MSITYPE_NULLABLE;
 254         break;
 255     }
 256
 257     if (name)
 258     {
 259         *name = strdupW(name_ptr);
 260         if (!*name) return ERROR_FUNCTION_FAILED;
 261     }
 262
 263     return ERROR_SUCCESS;
 264 }
 265
 266 static UINT STREAMS_modify(struct tagMSIVIEW *view, MSIMODIFY eModifyMode, MSIRECORD *rec)
 267 {
 268     FIXME("(%p, %d, %p): stub!\n", view, eModifyMode, rec);
 269     return ERROR_SUCCESS;
 270 }
 271
 272 static UINT STREAMS_delete(struct tagMSIVIEW *view)
 273 {
 274     MSISTREAMSVIEW *sv = (MSISTREAMSVIEW *)view;
 275     int i;
 276
 277     TRACE("(%p)\n", view);
 278
 279     for (i = 0; i < sv->num_rows; i++)
 280     {
 281         if (sv->streams[i]->stream)
 282             IStream_Release(sv->streams[i]->stream);
 283         msi_free(sv->streams[i]);
 284     }
 285
 286     msi_free(sv->streams);
 287
 288     return ERROR_SUCCESS;
 289 }
 290
 291 static UINT STREAMS_find_matching_rows(struct tagMSIVIEW *view, UINT col,
 292                                        UINT val, UINT *row, MSIITERHANDLE *handle)
 293 {
 294     MSISTREAMSVIEW *sv = (MSISTREAMSVIEW *)view;
 295     UINT index = (UINT)*handle;
 296
 297     TRACE("(%d, %d): %d\n", *row, col, val);
 298
 299     if (col == 0 || col > NUM_STREAMS_COLS)
 300         return ERROR_INVALID_PARAMETER;
 301
 302     while (index < sv->num_rows)
 303     {
 304         if (sv->streams[index]->str_index == val)
 305         {
 306             *row = index;
 307             break;
 308         }
 309
 310         index++;
 311     }
 312
 313     *handle = (MSIITERHANDLE)++index;
 314     if (index >= sv->num_rows)
 315         return ERROR_NO_MORE_ITEMS;
 316
 317     return ERROR_SUCCESS;
 318 }
 319
 320 static const MSIVIEWOPS streams_ops =
 321 {
 322     STREAMS_fetch_int,
 323     STREAMS_fetch_stream,
 324     STREAMS_set_row,
 325     STREAMS_insert_row,
 326     STREAMS_execute,
 327     STREAMS_close,
 328     STREAMS_get_dimensions,
 329     STREAMS_get_column_info,
 330     STREAMS_modify,
 331     STREAMS_delete,
 332     STREAMS_find_matching_rows
 333 };
 334
 335 static UINT add_streams_to_table(MSISTREAMSVIEW *sv)
 336 {
 337     IEnumSTATSTG *stgenum = NULL;
 338     STATSTG stat;
 339     STREAM *stream = NULL;
 340     HRESULT hr;
 341     UINT count = 0, size;
 342
 343     hr = IStorage_EnumElements(sv->db->storage, 0, NULL, 0, &stgenum);
 344     if (FAILED(hr))
 345         return -1;
 346
 347     sv->max_streams = 1;
 348     sv->streams = msi_alloc(sizeof(STREAM *));
 349     if (!sv->streams)
 350         return -1;
 351
 352     while (TRUE)
 353     {
 354         size = 0;
 355         hr = IEnumSTATSTG_Next(stgenum, 1, &stat, &size);
 356         if (FAILED(hr) || !size)
 357             break;
 358
 359         /* table streams are not in the _Streams table */
 360         if (*stat.pwcsName == 0x4840)
 361             continue;
 362
 363         stream = create_stream(sv, stat.pwcsName, TRUE, NULL);
 364         if (!stream)
 365         {
 366             count = -1;
 367             break;
 368         }
 369
 370         IStorage_OpenStream(sv->db->storage, stat.pwcsName, 0,
 371                             STGM_READ | STGM_SHARE_EXCLUSIVE, 0, &stream->stream);
 372
 373         if (!add_stream_to_table(sv, stream, count++))
 374         {
 375             count = -1;
 376             break;
 377         }
 378     }
 379
 380     IEnumSTATSTG_Release(stgenum);
 381     return count;
 382 }
 383
 384 UINT STREAMS_CreateView(MSIDATABASE *db, MSIVIEW **view)
 385 {
 386     MSISTREAMSVIEW *sv;
 387
 388     TRACE("(%p, %p)\n", db, view);
 389
 390     sv = msi_alloc(sizeof(MSISTREAMSVIEW));
 391     if (!sv)
 392         return ERROR_FUNCTION_FAILED;
 393
 394     sv->view.ops = &streams_ops;
 395     sv->db = db;
 396     sv->num_rows = add_streams_to_table(sv);
 397
 398     if (sv->num_rows < 0)
 399         return ERROR_FUNCTION_FAILED;
 400
 401     *view = (MSIVIEW *)sv;
 402
 403     return ERROR_SUCCESS;
 404 }