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   1 /*
   2  * shpolicy.c - Data for shell/system policies.
   3  *
   4  * Copyright 1999 Ian Schmidt <ischmidt@cfl.rr.com>
   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  * NOTES:
  21  *
  22  * Some of these policies can be tweaked via the System Policy
  23  * Editor which came with the Win95 Migration Guide, although
  24  * there doesn't appear to be an updated Win98 version that
  25  * would handle the many new policies introduced since then.
  26  * You could easily write one with the information in
  27  * this file...
  28  *
  29  * Up to date as of SHELL32 v4.72 (Win98, Win95 with MSIE 5)
  30  */
  31
  32 #include <stdlib.h>
  33 #include <string.h>
  34
  35 #include "windef.h"
  36 #include "winerror.h"
  37 #include "winreg.h"
  38
  39 #include "undocshell.h"
  40 #include "wine/winuser16.h"
  41
  42 #include "wine/debug.h"
  43
  44 WINE_DEFAULT_DEBUG_CHANNEL(shell);
  45
  46 #define SHELL_MAX_POLICIES 57
  47
  48 #define SHELL_NO_POLICY 0xffffffff
  49
  50 typedef struct tagPOLICYDAT
  51 {
  52   DWORD polflags;        /* flags value passed to SHRestricted */
  53   LPSTR appstr;          /* application str such as "Explorer" */
  54   LPSTR keystr;          /* name of the actual registry key / policy */
  55   DWORD cache;           /* cached value or 0xffffffff for invalid */
  56 } POLICYDATA, *LPPOLICYDATA;
  57
  58 //extern POLICYDATA sh32_policy_table[SHELL_MAX_POLICIES];
  59
  60 /* application strings */
  61
  62 static char strExplorer[] = {"Explorer"};
  63 static char strActiveDesk[] = {"ActiveDesktop"};
  64 static char strWinOldApp[] = {"WinOldApp"};
  65
  66 /* key strings */
  67
  68 static char strNoFileURL[] = {"NoFileUrl"};
  69 static char strNoFolderOptions[] = {"NoFolderOptions"};
  70 static char strNoChangeStartMenu[] = {"NoChangeStartMenu"};
  71 static char strNoWindowsUpdate[] = {"NoWindowsUpdate"};
  72 static char strNoSetActiveDesktop[] = {"NoSetActiveDesktop"};
  73 static char strNoForgetSoftwareUpdate[] = {"NoForgetSoftwareUpdate"};
  74 static char strNoMSAppLogo[] = {"NoMSAppLogo5ChannelNotify"};
  75 static char strForceCopyACLW[] = {"ForceCopyACLWithFile"};
  76 static char strNoResolveTrk[] = {"NoResolveTrack"};
  77 static char strNoResolveSearch[] = {"NoResolveSearch"};
  78 static char strNoEditComponent[] = {"NoEditingComponents"};
  79 static char strNoMovingBand[] = {"NoMovingBands"};
  80 static char strNoCloseDragDrop[] = {"NoCloseDragDropBands"};
  81 static char strNoCloseComponent[] = {"NoClosingComponents"};
  82 static char strNoDelComponent[] = {"NoDeletingComponents"};
  83 static char strNoAddComponent[] = {"NoAddingComponents"};
  84 static char strNoComponent[] = {"NoComponents"};
  85 static char strNoChangeWallpaper[] = {"NoChangingWallpaper"};
  86 static char strNoHTMLWallpaper[] = {"NoHTMLWallpaper"};
  87 static char strNoCustomWebView[] = {"NoCustomizeWebView"};
  88 static char strClassicShell[] = {"ClassicShell"};
  89 static char strClearRecentDocs[] = {"ClearRecentDocsOnExit"};
  90 static char strNoFavoritesMenu[] = {"NoFavoritesMenu"};
  91 static char strNoActiveDesktopChanges[] = {"NoActiveDesktopChanges"};
  92 static char strNoActiveDesktop[] = {"NoActiveDesktop"};
  93 static char strNoRecentDocMenu[] = {"NoRecentDocsMenu"};
  94 static char strNoRecentDocHistory[] = {"NoRecentDocsHistory"};
  95 static char strNoInetIcon[] = {"NoInternetIcon"};
  96 static char strNoStngsWizard[] = {"NoSettingsWizards"};
  97 static char strNoLogoff[] = {"NoLogoff"};
  98 static char strNoNetConDis[] = {"NoNetConnectDisconnect"};
  99 static char strNoContextMenu[] = {"NoViewContextMenu"};
 100 static char strNoTryContextMenu[] = {"NoTrayContextMenu"};
 101 static char strNoWebMenu[] = {"NoWebMenu"};
 102 static char strLnkResolveIgnoreLnkInfo[] = {"LinkResolveIgnoreLinkInfo"};
 103 static char strNoCommonGroups[] = {"NoCommonGroups"};
 104 static char strEnforceShlExtSecurity[] = {"EnforceShellExtensionSecurity"};
 105 static char strNoRealMode[] = {"NoRealMode"};
 106 static char strMyDocsOnNet[] = {"MyDocsOnNet"};
 107 static char strNoStartMenuSubfolder[] = {"NoStartMenuSubFolders"};
 108 static char strNoAddPrinters[] = {"NoAddPrinter"};
 109 static char strNoDeletePrinters[] = {"NoDeletePrinter"};
 110 static char strNoPrintTab[] = {"NoPrinterTabs"};
 111 static char strRestrictRun[] = {"RestrictRun"};
 112 static char strNoStartBanner[] = {"NoStartBanner"};
 113 static char strNoNetworkNeighborhood[] = {"NoNetHood"};
 114 static char strNoDriveTypeAtRun[] = {"NoDriveTypeAutoRun"};
 115 static char strNoDrivesAutoRun[] = {"NoDriveAutoRun"};
 116 static char strNoDrives[] = {"NoDrives"};
 117 static char strNoFind[] = {"NoFind"};
 118 static char strNoDesktop[] = {"NoDesktop"};
 119 static char strNoSetTaskBar[] = {"NoSetTaskbar"};
 120 static char strNoSetFld[] = {"NoSetFolders"};
 121 static char strNoFileMenu[] = {"NoFileMenu"};
 122 static char strNoSavSetng[] = {"NoSaveSettings"};
 123 static char strNoClose[] = {"NoClose"};
 124 static char strNoRun[] = {"NoRun"};
 125
 126 /* policy data array */
 127
 128 POLICYDATA sh32_policy_table[] =
 129 {
 130   {
 131     0x1,
 132     strExplorer,
 133     strNoRun,
 134     SHELL_NO_POLICY
 135   },
 136   {
 137     0x2,
 138     strExplorer,
 139     strNoClose,
 140     SHELL_NO_POLICY
 141   },
 142   {
 143     0x4,
 144     strExplorer,
 145     strNoSavSetng,
 146     SHELL_NO_POLICY
 147   },
 148   {
 149     0x8,
 150     strExplorer,
 151     strNoFileMenu,
 152     SHELL_NO_POLICY
 153   },
 154   {
 155     0x10,
 156     strExplorer,
 157     strNoSetFld,
 158     SHELL_NO_POLICY
 159   },
 160   {
 161     0x20,
 162     strExplorer,
 163     strNoSetTaskBar,
 164     SHELL_NO_POLICY
 165   },
 166   {
 167     0x40,
 168     strExplorer,
 169     strNoDesktop,
 170     SHELL_NO_POLICY
 171   },
 172   {
 173     0x80,
 174     strExplorer,
 175     strNoFind,
 176     SHELL_NO_POLICY
 177   },
 178   {
 179     0x100,
 180     strExplorer,
 181     strNoDrives,
 182     SHELL_NO_POLICY
 183   },
 184   {
 185     0x200,
 186     strExplorer,
 187     strNoDrivesAutoRun,
 188     SHELL_NO_POLICY
 189   },
 190   {
 191     0x400,
 192     strExplorer,
 193     strNoDriveTypeAtRun,
 194     SHELL_NO_POLICY
 195   },
 196   {
 197     0x800,
 198     strExplorer,
 199     strNoNetworkNeighborhood,
 200     SHELL_NO_POLICY
 201   },
 202   {
 203     0x1000,
 204     strExplorer,
 205     strNoStartBanner,
 206     SHELL_NO_POLICY
 207   },
 208   {
 209     0x2000,
 210     strExplorer,
 211     strRestrictRun,
 212     SHELL_NO_POLICY
 213   },
 214   {
 215     0x4000,
 216     strExplorer,
 217     strNoPrintTab,
 218     SHELL_NO_POLICY
 219   },
 220   {
 221     0x8000,
 222     strExplorer,
 223     strNoDeletePrinters,
 224     SHELL_NO_POLICY
 225   },
 226   {
 227     0x10000,
 228     strExplorer,
 229     strNoAddPrinters,
 230     SHELL_NO_POLICY
 231   },
 232   {
 233     0x20000,
 234     strExplorer,
 235     strNoStartMenuSubfolder,
 236     SHELL_NO_POLICY
 237   },
 238   {
 239     0x40000,
 240     strExplorer,
 241     strMyDocsOnNet,
 242     SHELL_NO_POLICY
 243   },
 244   {
 245     0x80000,
 246     strWinOldApp,
 247     strNoRealMode,
 248     SHELL_NO_POLICY
 249   },
 250   {
 251     0x100000,
 252     strExplorer,
 253     strEnforceShlExtSecurity,
 254     SHELL_NO_POLICY
 255   },
 256   {
 257     0x200000,
 258     strExplorer,
 259     strLnkResolveIgnoreLnkInfo,
 260     SHELL_NO_POLICY
 261   },
 262   {
 263     0x400000,
 264     strExplorer,
 265     strNoCommonGroups,
 266     SHELL_NO_POLICY
 267   },
 268   {
 269     0x1000000,
 270     strExplorer,
 271     strNoWebMenu,
 272     SHELL_NO_POLICY
 273   },
 274   {
 275     0x2000000,
 276     strExplorer,
 277     strNoTryContextMenu,
 278     SHELL_NO_POLICY
 279   },
 280   {
 281     0x4000000,
 282     strExplorer,
 283     strNoContextMenu,
 284     SHELL_NO_POLICY
 285   },
 286   {
 287     0x8000000,
 288     strExplorer,
 289     strNoNetConDis,
 290     SHELL_NO_POLICY
 291   },
 292   {
 293     0x10000000,
 294     strExplorer,
 295     strNoLogoff,
 296     SHELL_NO_POLICY
 297   },
 298   {
 299     0x20000000,
 300     strExplorer,
 301     strNoStngsWizard,
 302     SHELL_NO_POLICY
 303   },
 304   {
 305     0x40000001,
 306     strExplorer,
 307     strNoInetIcon,
 308     SHELL_NO_POLICY
 309   },
 310   {
 311     0x40000002,
 312     strExplorer,
 313     strNoRecentDocHistory,
 314     SHELL_NO_POLICY
 315   },
 316   {
 317     0x40000003,
 318     strExplorer,
 319     strNoRecentDocMenu,
 320     SHELL_NO_POLICY
 321   },
 322   {
 323     0x40000004,
 324     strExplorer,
 325     strNoActiveDesktop,
 326     SHELL_NO_POLICY
 327   },
 328   {
 329     0x40000005,
 330     strExplorer,
 331     strNoActiveDesktopChanges,
 332     SHELL_NO_POLICY
 333   },
 334   {
 335     0x40000006,
 336     strExplorer,
 337     strNoFavoritesMenu,
 338     SHELL_NO_POLICY
 339   },
 340   {
 341     0x40000007,
 342     strExplorer,
 343     strClearRecentDocs,
 344     SHELL_NO_POLICY
 345   },
 346   {
 347     0x40000008,
 348     strExplorer,
 349     strClassicShell,
 350     SHELL_NO_POLICY
 351   },
 352   {
 353     0x40000009,
 354     strExplorer,
 355     strNoCustomWebView,
 356     SHELL_NO_POLICY
 357   },
 358   {
 359     0x40000010,
 360     strActiveDesk,
 361     strNoHTMLWallpaper,
 362     SHELL_NO_POLICY
 363   },
 364   {
 365     0x40000011,
 366     strActiveDesk,
 367     strNoChangeWallpaper,
 368     SHELL_NO_POLICY
 369   },
 370   {
 371     0x40000012,
 372     strActiveDesk,
 373     strNoComponent,
 374     SHELL_NO_POLICY
 375   },
 376   {
 377     0x40000013,
 378     strActiveDesk,
 379     strNoAddComponent,
 380     SHELL_NO_POLICY
 381   },
 382   {
 383     0x40000014,
 384     strActiveDesk,
 385     strNoDelComponent,
 386     SHELL_NO_POLICY
 387   },
 388   {
 389     0x40000015,
 390     strActiveDesk,
 391     strNoCloseComponent,
 392     SHELL_NO_POLICY
 393   },
 394   {
 395     0x40000016,
 396     strActiveDesk,
 397     strNoCloseDragDrop,
 398     SHELL_NO_POLICY
 399   },
 400   {
 401     0x40000017,
 402     strActiveDesk,
 403     strNoMovingBand,
 404     SHELL_NO_POLICY
 405   },
 406   {
 407     0x40000018,
 408     strActiveDesk,
 409     strNoEditComponent,
 410     SHELL_NO_POLICY
 411   },
 412   {
 413     0x40000019,
 414     strExplorer,
 415     strNoResolveSearch,
 416     SHELL_NO_POLICY
 417   },
 418   {
 419     0x4000001a,
 420     strExplorer,
 421     strNoResolveTrk,
 422     SHELL_NO_POLICY
 423   },
 424   {
 425     0x4000001b,
 426     strExplorer,
 427     strForceCopyACLW,
 428     SHELL_NO_POLICY
 429   },
 430   {
 431     0x4000001c,
 432     strExplorer,
 433     strNoMSAppLogo,
 434     SHELL_NO_POLICY
 435   },
 436   {
 437     0x4000001d,
 438     strExplorer,
 439     strNoForgetSoftwareUpdate,
 440     SHELL_NO_POLICY
 441   },
 442   {
 443     0x4000001e,
 444     strExplorer,
 445     strNoSetActiveDesktop,
 446     SHELL_NO_POLICY
 447   },
 448   {
 449     0x4000001f,
 450     strExplorer,
 451     strNoWindowsUpdate,
 452     SHELL_NO_POLICY
 453   },
 454   {
 455     0x40000020,
 456     strExplorer,
 457     strNoChangeStartMenu,
 458     SHELL_NO_POLICY
 459   },
 460   {
 461     0x40000021,
 462     strExplorer,
 463     strNoFolderOptions,
 464     SHELL_NO_POLICY
 465   },
 466   {
 467     0x50000024,
 468     strExplorer,
 469     strNoFileURL,
 470     SHELL_NO_POLICY
 471   }
 472 };
 473
 474 /*************************************************************************
 475  * SHRestricted                         [SHELL32.100]
 476  *
 477  * walks through policy table, queries <app> key, <type> value, returns
 478  * queried (DWORD) value, and caches it between called to SHInitRestricted
 479  * to prevent unnecessary registry access.
 480  *
 481  * NOTES
 482  *     exported by ordinal
 483  *
 484  * REFERENCES:
 485  *     MS System Policy Editor
 486  *     98Lite 2.0 (which uses many of these policy keys) http://www.98lite.net/
 487  *     "The Windows 95 Registry", by John Woram, 1996 MIS: Press
 488  */
 489 DWORD WINAPI SHRestricted (DWORD pol) {
 490         char regstr[256];
 491         HKEY    xhkey;
 492         DWORD   retval, polidx, i, datsize = 4;
 493
 494         TRACE("(%08lx)\n",pol);
 495
 496         polidx = -1;
 497
 498         /* scan to see if we know this policy ID */
 499         for (i = 0; i < SHELL_MAX_POLICIES; i++)
 500         {
 501              if (pol == sh32_policy_table[i].polflags)
 502              {
 503                  polidx = i;
 504                  break;
 505              }
 506         }
 507
 508         if (polidx == -1)
 509         {
 510             /* we don't know this policy, return 0 */
 511             TRACE("unknown policy: (%08lx)\n", pol);
 512                 return 0;
 513         }
 514
 515         /* we have a known policy */
 516         strcpy(regstr, "Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\");
 517         strcat(regstr, sh32_policy_table[polidx].appstr);
 518
 519         /* first check if this policy has been cached, return it if so */
 520         if (sh32_policy_table[polidx].cache != SHELL_NO_POLICY)
 521         {
 522             return sh32_policy_table[polidx].cache;
 523         }
 524
 525         /* return 0 and don't set the cache if any registry errors occur */
 526         retval = 0;
 527         if (RegOpenKeyA(HKEY_CURRENT_USER, regstr, &xhkey) == ERROR_SUCCESS)
 528         {
 529             if (RegQueryValueExA(xhkey, sh32_policy_table[polidx].keystr, NULL, NULL, (LPBYTE)&retval, &datsize) == ERROR_SUCCESS)
 530             {
 531                 sh32_policy_table[polidx].cache = retval;
 532             }
 533
 534             RegCloseKey(xhkey);
 535         }
 536
 537         return retval;
 538 }
 539
 540 /*************************************************************************
 541  *      SHInitRestricted                         [SHELL32.244]
 542  *
 543  * Win98+ by-ordinal only routine called by Explorer and MSIE 4 and 5.
 544  * Inits the policy cache used by SHRestricted to avoid excess
 545  * registry access.
 546  *
 547  * INPUTS
 548  * Two inputs: one is a string or NULL.  If non-NULL the pointer
 549  * should point to a string containing the following exact text:
 550  * "Software\Microsoft\Windows\CurrentVersion\Policies".
 551  * The other input is unused.
 552  *
 553  * NOTES
 554  * If the input is non-NULL and does not point to a string containing
 555  * that exact text the routine will do nothing.
 556  *
 557  * If the text does match or the pointer is NULL, then the routine
 558  * will init SHRestricted()'s policy cache to all 0xffffffff and
 559  * returns 0xffffffff as well.
 560  *
 561  * I haven't yet run into anything calling this with inputs other than
 562  * (NULL, NULL), so I may have the inputs reversed.
 563  */
 564
 565 BOOL WINAPI SHInitRestricted(LPSTR inpRegKey, LPSTR parm2)
 566 {
 567      int i;
 568
 569      TRACE("(%p, %p)\n", inpRegKey, parm2);
 570
 571      /* first check - if input is non-NULL and points to the secret
 572         key string, then pass.  Otherwise return 0.
 573      */
 574
 575      if (inpRegKey != (LPSTR)NULL)
 576      {
 577          if (lstrcmpiA(inpRegKey, "Software\\Microsoft\\Windows\\CurrentVersion\\Policies"))
 578          {
 579              /* doesn't match, fail */
 580              return 0;
 581          }
 582      }
 583
 584      /* check passed, init all policy cache entries with SHELL_NO_POLICY */
 585      for (i = 0; i < SHELL_MAX_POLICIES; i++)
 586      {
 587           sh32_policy_table[i].cache = SHELL_NO_POLICY;
 588      }
 589
 590      return SHELL_NO_POLICY;
 591 }