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_get_row( struct tagMSIVIEW *view, UINT row, MSIRECORD **rec )
 133 {
 134     MSISTREAMSVIEW *sv = (MSISTREAMSVIEW *)view;
 135
 136     FIXME("%p %d %p\n", sv, row, rec);
 137
 138     return ERROR_CALL_NOT_IMPLEMENTED;
 139 }
 140
 141 static UINT STREAMS_set_row(struct tagMSIVIEW *view, UINT row, MSIRECORD *rec, UINT mask)
 142 {
 143     FIXME("(%p, %d, %p, %d): stub!\n", view, row, rec, mask);
 144     return ERROR_SUCCESS;
 145 }
 146
 147 static UINT STREAMS_insert_row(struct tagMSIVIEW *view, MSIRECORD *rec, BOOL temporary)
 148 {
 149     MSISTREAMSVIEW *sv = (MSISTREAMSVIEW *)view;
 150     STREAM *stream;
 151     IStream *stm;
 152     STATSTG stat;
 153     LPWSTR name = NULL;
 154     USHORT *data = NULL;
 155     HRESULT hr;
 156     ULONG count;
 157     UINT r = ERROR_FUNCTION_FAILED;
 158
 159     TRACE("(%p, %p, %d)\n", view, rec, temporary);
 160
 161     r = MSI_RecordGetIStream(rec, 2, &stm);
 162     if (r != ERROR_SUCCESS)
 163         return r;
 164
 165     hr = IStream_Stat(stm, &stat, STATFLAG_NONAME);
 166     if (FAILED(hr))
 167     {
 168         WARN("failed to stat stream: %08x\n", hr);
 169         goto done;
 170     }
 171
 172     if (stat.cbSize.QuadPart >> 32)
 173         goto done;
 174
 175     data = msi_alloc(stat.cbSize.QuadPart);
 176     if (!data)
 177         goto done;
 178
 179     hr = IStream_Read(stm, data, stat.cbSize.QuadPart, &count);
 180     if (FAILED(hr) || count != stat.cbSize.QuadPart)
 181     {
 182         WARN("failed to read stream: %08x\n", hr);
 183         goto done;
 184     }
 185
 186     name = strdupW(MSI_RecordGetString(rec, 1));
 187     if (!name)
 188         goto done;
 189
 190     r = write_stream_data(sv->db->storage, name, data, count, FALSE);
 191     if (r != ERROR_SUCCESS)
 192     {
 193         WARN("failed to write stream data: %d\n", r);
 194         goto done;
 195     }
 196
 197     stream = create_stream(sv, name, FALSE, NULL);
 198     if (!stream)
 199         goto done;
 200
 201     IStorage_OpenStream(sv->db->storage, name, 0,
 202                         STGM_READ | STGM_SHARE_EXCLUSIVE, 0, &stream->stream);
 203
 204     if (!add_stream_to_table(sv, stream, sv->num_rows++))
 205         goto done;
 206
 207 done:
 208     msi_free(name);
 209     msi_free(data);
 210
 211     IStream_Release(stm);
 212
 213     return r;
 214 }
 215
 216 static UINT STREAMS_delete_row(struct tagMSIVIEW *view, UINT row)
 217 {
 218     FIXME("(%p %d): stub!\n", view, row);
 219     return ERROR_SUCCESS;
 220 }
 221
 222 static UINT STREAMS_execute(struct tagMSIVIEW *view, MSIRECORD *record)
 223 {
 224     TRACE("(%p, %p)\n", view, record);
 225     return ERROR_SUCCESS;
 226 }
 227
 228 static UINT STREAMS_close(struct tagMSIVIEW *view)
 229 {
 230     TRACE("(%p)\n", view);
 231     return ERROR_SUCCESS;
 232 }
 233
 234 static UINT STREAMS_get_dimensions(struct tagMSIVIEW *view, UINT *rows, UINT *cols)
 235 {
 236     MSISTREAMSVIEW *sv = (MSISTREAMSVIEW *)view;
 237
 238     TRACE("(%p, %p, %p)\n", view, rows, cols);
 239
 240     if (cols) *cols = NUM_STREAMS_COLS;
 241     if (rows) *rows = sv->num_rows;
 242
 243     return ERROR_SUCCESS;
 244 }
 245
 246 static UINT STREAMS_get_column_info(struct tagMSIVIEW *view,
 247                                     UINT n, LPWSTR *name, UINT *type)
 248 {
 249     LPCWSTR name_ptr = NULL;
 250
 251     static const WCHAR Name[] = {'N','a','m','e',0};
 252     static const WCHAR Data[] = {'D','a','t','a',0};
 253
 254     TRACE("(%p, %d, %p, %p)\n", view, n, name, type);
 255
 256     if (n == 0 || n > NUM_STREAMS_COLS)
 257         return ERROR_INVALID_PARAMETER;
 258
 259     switch (n)
 260     {
 261     case 1:
 262         name_ptr = Name;
 263         if (type) *type = MSITYPE_STRING | MAX_STREAM_NAME_LEN;
 264         break;
 265
 266     case 2:
 267         name_ptr = Data;
 268         if (type) *type = MSITYPE_STRING | MSITYPE_VALID | MSITYPE_NULLABLE;
 269         break;
 270     }
 271
 272     if (name)
 273     {
 274         *name = strdupW(name_ptr);
 275         if (!*name) return ERROR_FUNCTION_FAILED;
 276     }
 277
 278     return ERROR_SUCCESS;
 279 }
 280
 281 static UINT STREAMS_modify(struct tagMSIVIEW *view, MSIMODIFY eModifyMode, MSIRECORD *rec, UINT row)
 282 {
 283     FIXME("(%p, %d, %p): stub!\n", view, eModifyMode, rec);
 284     return ERROR_SUCCESS;
 285 }
 286
 287 static UINT STREAMS_delete(struct tagMSIVIEW *view)
 288 {
 289     MSISTREAMSVIEW *sv = (MSISTREAMSVIEW *)view;
 290     int i;
 291
 292     TRACE("(%p)\n", view);
 293
 294     for (i = 0; i < sv->num_rows; i++)
 295     {
 296         if (sv->streams[i]->stream)
 297             IStream_Release(sv->streams[i]->stream);
 298         msi_free(sv->streams[i]);
 299     }
 300
 301     msi_free(sv->streams);
 302
 303     return ERROR_SUCCESS;
 304 }
 305
 306 static UINT STREAMS_find_matching_rows(struct tagMSIVIEW *view, UINT col,
 307                                        UINT val, UINT *row, MSIITERHANDLE *handle)
 308 {
 309     MSISTREAMSVIEW *sv = (MSISTREAMSVIEW *)view;
 310     UINT index = (UINT)*handle;
 311
 312     TRACE("(%d, %d): %d\n", *row, col, val);
 313
 314     if (col == 0 || col > NUM_STREAMS_COLS)
 315         return ERROR_INVALID_PARAMETER;
 316
 317     while (index < sv->num_rows)
 318     {
 319         if (sv->streams[index]->str_index == val)
 320         {
 321             *row = index;
 322             break;
 323         }
 324
 325         index++;
 326     }
 327
 328     *handle = (MSIITERHANDLE)++index;
 329     if (index >= sv->num_rows)
 330         return ERROR_NO_MORE_ITEMS;
 331
 332     return ERROR_SUCCESS;
 333 }
 334
 335 static const MSIVIEWOPS streams_ops =
 336 {
 337     STREAMS_fetch_int,
 338     STREAMS_fetch_stream,
 339     STREAMS_get_row,
 340     STREAMS_set_row,
 341     STREAMS_insert_row,
 342     STREAMS_delete_row,
 343     STREAMS_execute,
 344     STREAMS_close,
 345     STREAMS_get_dimensions,
 346     STREAMS_get_column_info,
 347     STREAMS_modify,
 348     STREAMS_delete,
 349     STREAMS_find_matching_rows,
 350     NULL,
 351     NULL,
 352     NULL,
 353     NULL,
 354 };
 355
 356 static UINT add_streams_to_table(MSISTREAMSVIEW *sv)
 357 {
 358     IEnumSTATSTG *stgenum = NULL;
 359     STATSTG stat;
 360     STREAM *stream = NULL;
 361     HRESULT hr;
 362     UINT count = 0, size;
 363
 364     hr = IStorage_EnumElements(sv->db->storage, 0, NULL, 0, &stgenum);
 365     if (FAILED(hr))
 366         return -1;
 367
 368     sv->max_streams = 1;
 369     sv->streams = msi_alloc(sizeof(STREAM *));
 370     if (!sv->streams)
 371         return -1;
 372
 373     while (TRUE)
 374     {
 375         size = 0;
 376         hr = IEnumSTATSTG_Next(stgenum, 1, &stat, &size);
 377         if (FAILED(hr) || !size)
 378             break;
 379
 380         /* table streams are not in the _Streams table */
 381         if (*stat.pwcsName == 0x4840)
 382             continue;
 383
 384         stream = create_stream(sv, stat.pwcsName, TRUE, NULL);
 385         if (!stream)
 386         {
 387             count = -1;
 388             break;
 389         }
 390
 391         IStorage_OpenStream(sv->db->storage, stat.pwcsName, 0,
 392                             STGM_READ | STGM_SHARE_EXCLUSIVE, 0, &stream->stream);
 393
 394         if (!add_stream_to_table(sv, stream, count++))
 395         {
 396             count = -1;
 397             break;
 398         }
 399     }
 400
 401     IEnumSTATSTG_Release(stgenum);
 402     return count;
 403 }
 404
 405 UINT STREAMS_CreateView(MSIDATABASE *db, MSIVIEW **view)
 406 {
 407     MSISTREAMSVIEW *sv;
 408
 409     TRACE("(%p, %p)\n", db, view);
 410
 411     sv = msi_alloc(sizeof(MSISTREAMSVIEW));
 412     if (!sv)
 413         return ERROR_FUNCTION_FAILED;
 414
 415     sv->view.ops = &streams_ops;
 416     sv->db = db;
 417     sv->num_rows = add_streams_to_table(sv);
 418
 419     if (sv->num_rows < 0)
 420         return ERROR_FUNCTION_FAILED;
 421
 422     *view = (MSIVIEW *)sv;
 423
 424     return ERROR_SUCCESS;
 425 }