dlls/msi/regsvr.c

   1 /*
   2  *      self-registerable dll functions for msi.dll
   3  *
   4  * Copyright (C) 2004 Raphael Junqueira
   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 #define COBJMACROS
  22
  23 #include "config.h"
  24
  25 #include <stdarg.h>
  26 #include <string.h>
  27
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "winuser.h"
  31 #include "winreg.h"
  32 #include "winerror.h"
  33
  34 #include "ole2.h"
  35 #include "olectl.h"
  36 #include "oleauto.h"
  37
  38 #include "wine/debug.h"
  39
  40 #include "msi.h"
  41 #include "initguid.h"
  42 #include "msipriv.h"
  43
  44 WINE_DEFAULT_DEBUG_CHANNEL(msi);
  45
  46 /*
  47  * Near the bottom of this file are the exported DllRegisterServer and
  48  * DllUnregisterServer, which make all this worthwhile.
  49  */
  50
  51 /***********************************************************************
  52  *              interface for self-registering
  53  */
  54 struct regsvr_interface {
  55     IID const *iid;             /* NULL for end of list */
  56     LPCSTR name;                /* can be NULL to omit */
  57     IID const *base_iid;        /* can be NULL to omit */
  58     int num_methods;            /* can be <0 to omit */
  59     CLSID const *ps_clsid;      /* can be NULL to omit */
  60     CLSID const *ps_clsid32;    /* can be NULL to omit */
  61 };
  62
  63 static HRESULT register_interfaces(struct regsvr_interface const *list);
  64 static HRESULT unregister_interfaces(struct regsvr_interface const *list);
  65
  66 /**
  67  * @todo: maybe adding typelibs support here
  68  * [Software\\Classes\\CLSID\\{000C1090-0000-0000-C000-000000000046}\\TypeLib] 1080380217
  69  * @="{000C1092-0000-0000-C000-000000000046}"
  70  */
  71 struct regsvr_coclass {
  72     CLSID const *clsid;         /* NULL for end of list */
  73     LPCSTR name;                /* can be NULL to omit */
  74     LPCSTR iph32;               /* can be NULL to omit */
  75     LPCSTR ips;                 /* can be NULL to omit */
  76     LPCSTR ips32;               /* can be NULL to omit */
  77     LPCSTR ips32_tmodel;        /* can be NULL to omit, if apartment, iph32 must be set */
  78     DWORD flags;
  79     LPCSTR progid;              /* can be NULL to omit */
  80     LPCSTR viprogid;            /* can be NULL to omit */
  81     LPCSTR progid_extra;        /* can be NULL to omit */
  82 };
  83
  84 /* flags for regsvr_coclass.flags */
  85 #define PROGID_CLSID                  0x00000010
  86
  87 static HRESULT register_coclasses(struct regsvr_coclass const *list);
  88 static HRESULT unregister_coclasses(struct regsvr_coclass const *list);
  89
  90 /***********************************************************************
  91  *              static string constants
  92  */
  93 static WCHAR const interface_keyname[10] = {
  94     'I', 'n', 't', 'e', 'r', 'f', 'a', 'c', 'e', 0 };
  95 static WCHAR const base_ifa_keyname[14] = {
  96     'B', 'a', 's', 'e', 'I', 'n', 't', 'e', 'r', 'f', 'a', 'c',
  97     'e', 0 };
  98 static WCHAR const num_methods_keyname[11] = {
  99     'N', 'u', 'm', 'M', 'e', 't', 'h', 'o', 'd', 's', 0 };
 100 static WCHAR const ps_clsid_keyname[15] = {
 101     'P', 'r', 'o', 'x', 'y', 'S', 't', 'u', 'b', 'C', 'l', 's',
 102     'i', 'd', 0 };
 103 static WCHAR const ps_clsid32_keyname[17] = {
 104     'P', 'r', 'o', 'x', 'y', 'S', 't', 'u', 'b', 'C', 'l', 's',
 105     'i', 'd', '3', '2', 0 };
 106 static WCHAR const clsid_keyname[6] = {
 107     'C', 'L', 'S', 'I', 'D', 0 };
 108 static WCHAR const curver_keyname[7] = {
 109     'C', 'u', 'r', 'V', 'e', 'r', 0 };
 110 static WCHAR const iph32_keyname[] = {
 111     'I', 'n', 'P', 'r', 'o', 'c', 'H', 'a', 'n', 'd', 'l', 'e', 'r',
 112     '3', '2', 0 };
 113 static WCHAR const ips_keyname[13] = {
 114     'I', 'n', 'P', 'r', 'o', 'c', 'S', 'e', 'r', 'v', 'e', 'r',
 115     0 };
 116 static WCHAR const ips32_keyname[15] = {
 117     'I', 'n', 'P', 'r', 'o', 'c', 'S', 'e', 'r', 'v', 'e', 'r',
 118     '3', '2', 0 };
 119 static WCHAR const progid_keyname[7] = {
 120     'P', 'r', 'o', 'g', 'I', 'D', 0 };
 121 static WCHAR const viprogid_keyname[25] = {
 122     'V', 'e', 'r', 's', 'i', 'o', 'n', 'I', 'n', 'd', 'e', 'p',
 123     'e', 'n', 'd', 'e', 'n', 't', 'P', 'r', 'o', 'g', 'I', 'D',
 124     0 };
 125 static char const tmodel_valuename[] = "ThreadingModel";
 126
 127 /***********************************************************************
 128  *              static helper functions
 129  */
 130 static LONG register_key_guid(HKEY base, WCHAR const *name, GUID const *guid);
 131 static LONG register_key_defvalueW(HKEY base, WCHAR const *name,
 132                                    WCHAR const *value);
 133 static LONG register_key_defvalueA(HKEY base, WCHAR const *name,
 134                                    char const *value);
 135 static LONG register_progid(WCHAR const *clsid,
 136                             char const *progid, char const *curver_progid,
 137                             char const *name, char const *extra);
 138
 139 /***********************************************************************
 140  *              register_interfaces
 141  */
 142 static HRESULT register_interfaces(struct regsvr_interface const *list) {
 143     LONG res = ERROR_SUCCESS;
 144     HKEY interface_key;
 145
 146     res = RegCreateKeyExW(HKEY_CLASSES_ROOT, interface_keyname, 0, NULL, 0,
 147                           KEY_READ | KEY_WRITE, NULL, &interface_key, NULL);
 148     if (res != ERROR_SUCCESS) goto error_return;
 149
 150     for (; res == ERROR_SUCCESS && list->iid; ++list) {
 151         WCHAR buf[39];
 152         HKEY iid_key;
 153
 154         StringFromGUID2(list->iid, buf, 39);
 155         res = RegCreateKeyExW(interface_key, buf, 0, NULL, 0,
 156                               KEY_READ | KEY_WRITE, NULL, &iid_key, NULL);
 157         if (res != ERROR_SUCCESS) goto error_close_interface_key;
 158
 159         if (list->name) {
 160             res = RegSetValueExA(iid_key, NULL, 0, REG_SZ,
 161                                  (CONST BYTE*)(list->name),
 162                                  strlen(list->name) + 1);
 163             if (res != ERROR_SUCCESS) goto error_close_iid_key;
 164         }
 165
 166         if (list->base_iid) {
 167             res = register_key_guid(iid_key, base_ifa_keyname, list->base_iid);
 168             if (res != ERROR_SUCCESS) goto error_close_iid_key;
 169         }
 170
 171         if (0 <= list->num_methods) {
 172             static WCHAR const fmt[3] = { '%', 'd', 0 };
 173             HKEY key;
 174
 175             res = RegCreateKeyExW(iid_key, num_methods_keyname, 0, NULL, 0,
 176                                   KEY_READ | KEY_WRITE, NULL, &key, NULL);
 177             if (res != ERROR_SUCCESS) goto error_close_iid_key;
 178
 179             wsprintfW(buf, fmt, list->num_methods);
 180             res = RegSetValueExW(key, NULL, 0, REG_SZ,
 181                                  (CONST BYTE*)buf,
 182                                  (lstrlenW(buf) + 1) * sizeof(WCHAR));
 183             RegCloseKey(key);
 184
 185             if (res != ERROR_SUCCESS) goto error_close_iid_key;
 186         }
 187
 188         if (list->ps_clsid) {
 189             res = register_key_guid(iid_key, ps_clsid_keyname, list->ps_clsid);
 190             if (res != ERROR_SUCCESS) goto error_close_iid_key;
 191         }
 192
 193         if (list->ps_clsid32) {
 194             res = register_key_guid(iid_key, ps_clsid32_keyname, list->ps_clsid32);
 195             if (res != ERROR_SUCCESS) goto error_close_iid_key;
 196         }
 197
 198     error_close_iid_key:
 199         RegCloseKey(iid_key);
 200     }
 201
 202 error_close_interface_key:
 203     RegCloseKey(interface_key);
 204 error_return:
 205     return res != ERROR_SUCCESS ? HRESULT_FROM_WIN32(res) : S_OK;
 206 }
 207
 208 /***********************************************************************
 209  *              unregister_interfaces
 210  */
 211 static HRESULT unregister_interfaces(struct regsvr_interface const *list) {
 212     LONG res = ERROR_SUCCESS;
 213     HKEY interface_key;
 214
 215     res = RegOpenKeyExW(HKEY_CLASSES_ROOT, interface_keyname, 0,
 216                         KEY_READ | KEY_WRITE, &interface_key);
 217     if (res == ERROR_FILE_NOT_FOUND) return S_OK;
 218     if (res != ERROR_SUCCESS) goto error_return;
 219
 220     for (; res == ERROR_SUCCESS && list->iid; ++list) {
 221         WCHAR buf[39];
 222
 223         StringFromGUID2(list->iid, buf, 39);
 224         res = RegDeleteTreeW(interface_key, buf);
 225         if (res == ERROR_FILE_NOT_FOUND) res = ERROR_SUCCESS;
 226     }
 227
 228     RegCloseKey(interface_key);
 229 error_return:
 230     return res != ERROR_SUCCESS ? HRESULT_FROM_WIN32(res) : S_OK;
 231 }
 232
 233 /***********************************************************************
 234  *              register_coclasses
 235  */
 236 static HRESULT register_coclasses(struct regsvr_coclass const *list) {
 237     LONG res = ERROR_SUCCESS;
 238     HKEY coclass_key;
 239
 240     res = RegCreateKeyExW(HKEY_CLASSES_ROOT, clsid_keyname, 0, NULL, 0,
 241                           KEY_READ | KEY_WRITE, NULL, &coclass_key, NULL);
 242     if (res != ERROR_SUCCESS) goto error_return;
 243
 244     for (; res == ERROR_SUCCESS && list->clsid; ++list) {
 245         WCHAR buf[39];
 246         HKEY clsid_key;
 247
 248         StringFromGUID2(list->clsid, buf, 39);
 249         res = RegCreateKeyExW(coclass_key, buf, 0, NULL, 0,
 250                               KEY_READ | KEY_WRITE, NULL, &clsid_key, NULL);
 251         if (res != ERROR_SUCCESS) goto error_close_coclass_key;
 252
 253         if (list->name) {
 254             res = RegSetValueExA(clsid_key, NULL, 0, REG_SZ,
 255                                  (CONST BYTE*)(list->name),
 256                                  strlen(list->name) + 1);
 257             if (res != ERROR_SUCCESS) goto error_close_clsid_key;
 258         }
 259
 260         if (list->iph32) {
 261             HKEY iph32_key;
 262
 263             res = RegCreateKeyExW(clsid_key, iph32_keyname, 0, NULL, 0,
 264                                   KEY_READ | KEY_WRITE, NULL,
 265                                   &iph32_key, NULL);
 266             if (res != ERROR_SUCCESS) goto error_close_clsid_key;
 267
 268             res = RegSetValueExA(iph32_key, NULL, 0, REG_SZ,
 269                                  (CONST BYTE*)list->iph32,
 270                                  lstrlenA(list->iph32) + 1);
 271             RegCloseKey(iph32_key);
 272             if (res != ERROR_SUCCESS) goto error_close_clsid_key;
 273         }
 274
 275         if (list->ips) {
 276             res = register_key_defvalueA(clsid_key, ips_keyname, list->ips);
 277             if (res != ERROR_SUCCESS) goto error_close_clsid_key;
 278         }
 279
 280         if (list->ips32) {
 281             HKEY ips32_key;
 282
 283             res = RegCreateKeyExW(clsid_key, ips32_keyname, 0, NULL, 0,
 284                                   KEY_READ | KEY_WRITE, NULL,
 285                                   &ips32_key, NULL);
 286             if (res != ERROR_SUCCESS) goto error_close_clsid_key;
 287
 288             res = RegSetValueExA(ips32_key, NULL, 0, REG_SZ,
 289                                  (CONST BYTE*)list->ips32,
 290                                  lstrlenA(list->ips32) + 1);
 291             if (res == ERROR_SUCCESS && list->ips32_tmodel)
 292                 res = RegSetValueExA(ips32_key, tmodel_valuename, 0, REG_SZ,
 293                                      (CONST BYTE*)list->ips32_tmodel,
 294                                      strlen(list->ips32_tmodel) + 1);
 295             RegCloseKey(ips32_key);
 296             if (res != ERROR_SUCCESS) goto error_close_clsid_key;
 297         }
 298
 299         if (list->progid) {
 300             res = register_key_defvalueA(clsid_key, progid_keyname,
 301                                          list->progid);
 302             if (res != ERROR_SUCCESS) goto error_close_clsid_key;
 303
 304             res = register_progid(list->flags & PROGID_CLSID ? buf : NULL,
 305                                   list->progid, NULL,
 306                                   list->name, list->progid_extra);
 307             if (res != ERROR_SUCCESS) goto error_close_clsid_key;
 308         }
 309
 310         if (list->viprogid) {
 311             res = register_key_defvalueA(clsid_key, viprogid_keyname,
 312                                          list->viprogid);
 313             if (res != ERROR_SUCCESS) goto error_close_clsid_key;
 314
 315             res = register_progid(list->flags & PROGID_CLSID ? buf : NULL,
 316                                   list->viprogid, list->progid,
 317                                   list->name, list->progid_extra);
 318             if (res != ERROR_SUCCESS) goto error_close_clsid_key;
 319         }
 320
 321     error_close_clsid_key:
 322         RegCloseKey(clsid_key);
 323     }
 324
 325 error_close_coclass_key:
 326     RegCloseKey(coclass_key);
 327 error_return:
 328     return res != ERROR_SUCCESS ? HRESULT_FROM_WIN32(res) : S_OK;
 329 }
 330
 331 /***********************************************************************
 332  *              unregister_coclasses
 333  */
 334 static HRESULT unregister_coclasses(struct regsvr_coclass const *list) {
 335     LONG res = ERROR_SUCCESS;
 336     HKEY coclass_key;
 337
 338     res = RegOpenKeyExW(HKEY_CLASSES_ROOT, clsid_keyname, 0,
 339                         KEY_READ | KEY_WRITE, &coclass_key);
 340     if (res == ERROR_FILE_NOT_FOUND) return S_OK;
 341     if (res != ERROR_SUCCESS) goto error_return;
 342
 343     for (; res == ERROR_SUCCESS && list->clsid; ++list) {
 344         WCHAR buf[39];
 345
 346         StringFromGUID2(list->clsid, buf, 39);
 347         res = RegDeleteTreeW(coclass_key, buf);
 348         if (res == ERROR_FILE_NOT_FOUND) res = ERROR_SUCCESS;
 349         if (res != ERROR_SUCCESS) goto error_close_coclass_key;
 350
 351         if (list->progid) {
 352             res = RegDeleteTreeA(HKEY_CLASSES_ROOT, list->progid);
 353             if (res == ERROR_FILE_NOT_FOUND) res = ERROR_SUCCESS;
 354             if (res != ERROR_SUCCESS) goto error_close_coclass_key;
 355         }
 356
 357         if (list->viprogid) {
 358             res = RegDeleteTreeA(HKEY_CLASSES_ROOT, list->viprogid);
 359             if (res == ERROR_FILE_NOT_FOUND) res = ERROR_SUCCESS;
 360             if (res != ERROR_SUCCESS) goto error_close_coclass_key;
 361         }
 362     }
 363
 364 error_close_coclass_key:
 365     RegCloseKey(coclass_key);
 366 error_return:
 367     return res != ERROR_SUCCESS ? HRESULT_FROM_WIN32(res) : S_OK;
 368 }
 369
 370 /***********************************************************************
 371  *              regsvr_key_guid
 372  */
 373 static LONG register_key_guid(HKEY base, WCHAR const *name, GUID const *guid) {
 374     WCHAR buf[39];
 375
 376     StringFromGUID2(guid, buf, 39);
 377     return register_key_defvalueW(base, name, buf);
 378 }
 379
 380 /***********************************************************************
 381  *              regsvr_key_defvalueW
 382  */
 383 static LONG register_key_defvalueW(
 384     HKEY base,
 385     WCHAR const *name,
 386     WCHAR const *value) {
 387     LONG res;
 388     HKEY key;
 389
 390     res = RegCreateKeyExW(base, name, 0, NULL, 0,
 391                           KEY_READ | KEY_WRITE, NULL, &key, NULL);
 392     if (res != ERROR_SUCCESS) return res;
 393     res = RegSetValueExW(key, NULL, 0, REG_SZ, (CONST BYTE*)value,
 394                          (lstrlenW(value) + 1) * sizeof(WCHAR));
 395     RegCloseKey(key);
 396     return res;
 397 }
 398
 399 /***********************************************************************
 400  *              regsvr_key_defvalueA
 401  */
 402 static LONG register_key_defvalueA(
 403     HKEY base,
 404     WCHAR const *name,
 405     char const *value) {
 406     LONG res;
 407     HKEY key;
 408
 409     res = RegCreateKeyExW(base, name, 0, NULL, 0,
 410                           KEY_READ | KEY_WRITE, NULL, &key, NULL);
 411     if (res != ERROR_SUCCESS) return res;
 412     res = RegSetValueExA(key, NULL, 0, REG_SZ, (CONST BYTE*)value,
 413                          lstrlenA(value) + 1);
 414     RegCloseKey(key);
 415     return res;
 416 }
 417
 418 /***********************************************************************
 419  *              regsvr_progid
 420  */
 421 static LONG register_progid(
 422     WCHAR const *clsid,
 423     char const *progid,
 424     char const *curver_progid,
 425     char const *name,
 426     char const *extra) {
 427     LONG res;
 428     HKEY progid_key;
 429
 430     res = RegCreateKeyExA(HKEY_CLASSES_ROOT, progid, 0,
 431                           NULL, 0, KEY_READ | KEY_WRITE, NULL,
 432                           &progid_key, NULL);
 433     if (res != ERROR_SUCCESS) return res;
 434
 435     if (name) {
 436         res = RegSetValueExA(progid_key, NULL, 0, REG_SZ,
 437                              (CONST BYTE*)name, strlen(name) + 1);
 438         if (res != ERROR_SUCCESS) goto error_close_progid_key;
 439     }
 440
 441     if (clsid) {
 442         res = register_key_defvalueW(progid_key, clsid_keyname, clsid);
 443         if (res != ERROR_SUCCESS) goto error_close_progid_key;
 444     }
 445
 446     if (curver_progid) {
 447         res = register_key_defvalueA(progid_key, curver_keyname,
 448                                      curver_progid);
 449         if (res != ERROR_SUCCESS) goto error_close_progid_key;
 450     }
 451
 452     if (extra) {
 453         HKEY extra_key;
 454
 455         res = RegCreateKeyExA(progid_key, extra, 0,
 456                               NULL, 0, KEY_READ | KEY_WRITE, NULL,
 457                               &extra_key, NULL);
 458         if (res == ERROR_SUCCESS)
 459             RegCloseKey(extra_key);
 460     }
 461
 462 error_close_progid_key:
 463     RegCloseKey(progid_key);
 464     return res;
 465 }
 466
 467 /***********************************************************************
 468  *              coclass list
 469  */
 470 static struct regsvr_coclass const coclass_list[] = {
 471     {
 472         &CLSID_IMsiServer,
 473         "Msi install server",
 474         "ole32.dll",
 475         NULL,
 476         "msi.dll",
 477         "Apartment",
 478         PROGID_CLSID,
 479         "IMsiServer",
 480         NULL
 481     },
 482     {
 483         &CLSID_IMsiServerMessage,
 484         "Wine Installer Message RPC",
 485         NULL,
 486         NULL,
 487         "msi.dll",
 488         NULL,
 489         PROGID_CLSID,
 490         "WindowsInstaller.Message",
 491         NULL
 492     },
 493     {
 494         &CLSID_IMsiServerX1,
 495         "Msi install server",
 496         "ole32.dll",
 497         NULL,
 498         "msi.dll",
 499         "Apartment",
 500         0,
 501         "WindowsInstaller.Installer",
 502         NULL
 503     },
 504     {
 505         &CLSID_IMsiServerX2,
 506         "Msi install server",
 507         "ole32.dll",
 508         NULL,
 509         "msi.dll",
 510         "Apartment",
 511         PROGID_CLSID,
 512         "WindowsInstaller.Installer",
 513         NULL
 514     },
 515     {
 516         &CLSID_IMsiServerX3,
 517         "Msi install server",
 518         "ole32.dll",
 519         NULL,
 520         "msi.dll",
 521         "Apartment",
 522         0,
 523         "WindowsInstaller.Installer",
 524         NULL
 525     },
 526     { NULL }                    /* list terminator */
 527 };
 528
 529 /***********************************************************************
 530  *              interface list
 531  */
 532 /*
 533  * we should declare: (@see ole32/regsvr.c for examples)
 534  [-HKEY_CLASSES_ROOT\Interface\{000C101D-0000-0000-C000-000000000046}]
 535  [-HKEY_CLASSES_ROOT\Interface\{000C1025-0000-0000-C000-000000000046}]
 536  [-HKEY_CLASSES_ROOT\Interface\{000C1033-0000-0000-C000-000000000046}]
 537  [-HKEY_CLASSES_ROOT\Interface\{000C1090-0000-0000-C000-000000000046}]
 538  [-HKEY_CLASSES_ROOT\Interface\{000C1093-0000-0000-C000-000000000046}]
 539  [-HKEY_CLASSES_ROOT\Interface\{000C1095-0000-0000-C000-000000000046}]
 540  [-HKEY_CLASSES_ROOT\Interface\{000C109A-0000-0000-C000-000000000046}]
 541  [-HKEY_CLASSES_ROOT\Interface\{000C109B-0000-0000-C000-000000000046}]
 542  [-HKEY_CLASSES_ROOT\Interface\{000C109C-0000-0000-C000-000000000046}]
 543  [-HKEY_CLASSES_ROOT\Interface\{000C109D-0000-0000-C000-000000000046}]
 544  [-HKEY_CLASSES_ROOT\Interface\{000C109E-0000-0000-C000-000000000046}]
 545  [-HKEY_CLASSES_ROOT\Interface\{000C109F-0000-0000-C000-000000000046}]
 546 */
 547
 548 static struct regsvr_interface const interface_list[] = {
 549     { &CLSID_IMsiServer,
 550       "IMsiServer",
 551       NULL,
 552       18,
 553       NULL,
 554       NULL },
 555     { NULL } /* list terminator */
 556 };
 557
 558 static HRESULT register_msiexec(void)
 559 {
 560     static const WCHAR key[] = {
 561         'S','o','f','t','w','a','r','e',
 562         '\\','M','i','c','r','o','s','o','f','t',
 563         '\\','W','i','n','d','o','w','s',
 564         '\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n',
 565         '\\','I','n','s','t','a','l','l','e','r',0 };
 566     static const WCHAR val[] = {
 567         'I','n','s','t','a','l','l','e','r','L','o','c','a','t','i','o','n',0 };
 568     WCHAR path[MAX_PATH];
 569     HKEY hkey;
 570     LONG res;
 571     INT len;
 572
 573     len = GetSystemDirectoryW(path, MAX_PATH);
 574     if (!len || len > MAX_PATH)
 575         return E_FAIL;
 576
 577     res = RegCreateKeyExW(HKEY_LOCAL_MACHINE, key, 0,
 578                           NULL, 0, KEY_READ | KEY_WRITE, NULL,
 579                           &hkey, NULL);
 580     if (res != ERROR_SUCCESS)
 581         return E_FAIL;
 582
 583     res = RegSetValueExW(hkey, val, 0, REG_SZ,
 584                          (BYTE*)path, (len + 1)*sizeof(WCHAR));
 585
 586     RegCloseKey(hkey);
 587
 588     return (res == ERROR_SUCCESS) ? S_OK : E_FAIL;
 589 }
 590
 591 /***********************************************************************
 592  *              DllRegisterServer (MSI.@)
 593  */
 594 HRESULT WINAPI DllRegisterServer(void)
 595 {
 596     LPWSTR path = NULL;
 597     ITypeLib *tl;
 598     HRESULT hr;
 599
 600     TRACE("\n");
 601
 602     hr = register_coclasses(coclass_list);
 603     if (SUCCEEDED(hr))
 604         hr = register_interfaces(interface_list);
 605     if (SUCCEEDED(hr))
 606         hr = register_msiexec();
 607
 608     tl = get_msi_typelib( &path );
 609     if (tl)
 610     {
 611         hr = RegisterTypeLib( tl, path, NULL );
 612         ITypeLib_Release( tl );
 613     }
 614     else
 615         hr = E_FAIL;
 616
 617     return hr;
 618 }
 619
 620 /***********************************************************************
 621  *              DllUnregisterServer (MSI.@)
 622  */
 623 HRESULT WINAPI DllUnregisterServer(void)
 624 {
 625     HRESULT hr;
 626
 627     TRACE("\n");
 628
 629     hr = unregister_coclasses(coclass_list);
 630     if (SUCCEEDED(hr))
 631         hr = unregister_interfaces(interface_list);
 632     return hr;
 633 }