reactos/dll/win32/shell32/shpolicy.cpp

   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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, 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 v5.00 (W2K)
  30  */
  31
  32 #include "precomp.h"
  33
  34 WINE_DEFAULT_DEBUG_CHANNEL(shell);
  35
  36 #define SHELL_NO_POLICY 0xffffffff
  37
  38 typedef struct tagPOLICYDAT
  39 {
  40   RESTRICTIONS policy;          /* policy value passed to SHRestricted */
  41   LPCSTR appstr;         /* application str such as "Explorer" */
  42   LPCSTR keystr;         /* name of the actual registry key / policy */
  43   DWORD cache;           /* cached value or 0xffffffff for invalid */
  44 } POLICYDATA, *LPPOLICYDATA;
  45
  46 /* registry strings */
  47 static const CHAR strRegistryPolicyA[] = "Software\\Microsoft\\Windows\\CurrentVersion\\Policies";
  48 static const WCHAR strRegistryPolicyW[] = {'S','o','f','t','w','a','r','e','\\','M','i','c','r','o',
  49                                            's','o','f','t','\\','W','i','n','d','o','w','s','\\',
  50                                            'C','u','r','r','e','n','t','V','e','r','s','i','o','n',
  51                                            '\\','P','o','l','i','c','i','e','s',0};
  52 static const CHAR strPolicyA[] = "Policy";
  53 static const WCHAR strPolicyW[] = {'P','o','l','i','c','y',0};
  54
  55 /* application strings */
  56
  57 static const char strExplorer[] = {"Explorer"};
  58 static const char strActiveDesk[] = {"ActiveDesktop"};
  59 static const char strWinOldApp[] = {"WinOldApp"};
  60 static const char strAddRemoveProgs[] = {"AddRemoveProgs"};
  61
  62 /* key strings */
  63
  64 static const char strNoFileURL[] = {"NoFileUrl"};
  65 static const char strNoFolderOptions[] = {"NoFolderOptions"};
  66 static const char strNoChangeStartMenu[] = {"NoChangeStartMenu"};
  67 static const char strNoWindowsUpdate[] = {"NoWindowsUpdate"};
  68 static const char strNoSetActiveDesktop[] = {"NoSetActiveDesktop"};
  69 static const char strNoForgetSoftwareUpdate[] = {"NoForgetSoftwareUpdate"};
  70 static const char strNoMSAppLogo[] = {"NoMSAppLogo5ChannelNotify"};
  71 static const char strForceCopyACLW[] = {"ForceCopyACLWithFile"};
  72 static const char strNoResolveTrk[] = {"NoResolveTrack"};
  73 static const char strNoResolveSearch[] = {"NoResolveSearch"};
  74 static const char strNoEditComponent[] = {"NoEditingComponents"};
  75 static const char strNoMovingBand[] = {"NoMovingBands"};
  76 static const char strNoCloseDragDrop[] = {"NoCloseDragDropBands"};
  77 static const char strNoCloseComponent[] = {"NoClosingComponents"};
  78 static const char strNoDelComponent[] = {"NoDeletingComponents"};
  79 static const char strNoAddComponent[] = {"NoAddingComponents"};
  80 static const char strNoComponent[] = {"NoComponents"};
  81 static const char strNoChangeWallpaper[] = {"NoChangingWallpaper"};
  82 static const char strNoHTMLWallpaper[] = {"NoHTMLWallpaper"};
  83 static const char strNoCustomWebView[] = {"NoCustomizeWebView"};
  84 static const char strClassicShell[] = {"ClassicShell"};
  85 static const char strClearRecentDocs[] = {"ClearRecentDocsOnExit"};
  86 static const char strNoFavoritesMenu[] = {"NoFavoritesMenu"};
  87 static const char strNoActiveDesktopChanges[] = {"NoActiveDesktopChanges"};
  88 static const char strNoActiveDesktop[] = {"NoActiveDesktop"};
  89 static const char strNoRecentDocMenu[] = {"NoRecentDocsMenu"};
  90 static const char strNoRecentDocHistory[] = {"NoRecentDocsHistory"};
  91 static const char strNoInetIcon[] = {"NoInternetIcon"};
  92 static const char strNoSettingsWizard[] = {"NoSettingsWizards"};
  93 static const char strNoLogoff[] = {"NoLogoff"};
  94 static const char strNoNetConDis[] = {"NoNetConnectDisconnect"};
  95 static const char strNoViewContextMenu[] = {"NoViewContextMenu"};
  96 static const char strNoTrayContextMenu[] = {"NoTrayContextMenu"};
  97 static const char strNoWebMenu[] = {"NoWebMenu"};
  98 static const char strLnkResolveIgnoreLnkInfo[] = {"LinkResolveIgnoreLinkInfo"};
  99 static const char strNoCommonGroups[] = {"NoCommonGroups"};
 100 static const char strEnforceShlExtSecurity[] = {"EnforceShellExtensionSecurity"};
 101 static const char strNoRealMode[] = {"NoRealMode"};
 102 static const char strMyDocsOnNet[] = {"MyDocsOnNet"};
 103 static const char strNoStartMenuSubfolder[] = {"NoStartMenuSubFolders"};
 104 static const char strNoAddPrinters[] = {"NoAddPrinter"};
 105 static const char strNoDeletePrinters[] = {"NoDeletePrinter"};
 106 static const char strNoPrintTab[] = {"NoPrinterTabs"};
 107 static const char strRestrictRun[] = {"RestrictRun"};
 108 static const char strNoStartBanner[] = {"NoStartBanner"};
 109 static const char strNoNetworkNeighborhood[] = {"NoNetHood"};
 110 static const char strNoDriveTypeAtRun[] = {"NoDriveTypeAutoRun"};
 111 static const char strNoDrivesAutoRun[] = {"NoDriveAutoRun"};
 112 static const char strSeparateProcess[] = {"SeparateProcess"};
 113 static const char strNoDrives[] = {"NoDrives"};
 114 static const char strNoFind[] = {"NoFind"};
 115 static const char strNoDesktop[] = {"NoDesktop"};
 116 static const char strNoSetTaskBar[] = {"NoSetTaskbar"};
 117 static const char strNoSetFld[] = {"NoSetFolders"};
 118 static const char strNoFileMenu[] = {"NoFileMenu"};
 119 static const char strNoSaveSetting[] = {"NoSaveSettings"};
 120 static const char strNoClose[] = {"NoClose"};
 121 static const char strNoRun[] = {"NoRun"};
 122
 123 /* policy data array */
 124 static POLICYDATA sh32_policy_table[] =
 125 {
 126   {
 127     REST_NORUN,
 128     strExplorer,
 129     strNoRun,
 130     SHELL_NO_POLICY
 131   },
 132   {
 133     REST_NOCLOSE,
 134     strExplorer,
 135     strNoClose,
 136     SHELL_NO_POLICY
 137   },
 138   {
 139     REST_NOSAVESET,
 140     strExplorer,
 141     strNoSaveSetting,
 142     SHELL_NO_POLICY
 143   },
 144   {
 145     REST_NOFILEMENU,
 146     strExplorer,
 147     strNoFileMenu,
 148     SHELL_NO_POLICY
 149   },
 150   {
 151     REST_NOSETFOLDERS,
 152     strExplorer,
 153     strNoSetFld,
 154     SHELL_NO_POLICY
 155   },
 156   {
 157     REST_NOSETTASKBAR,
 158     strExplorer,
 159     strNoSetTaskBar,
 160     SHELL_NO_POLICY
 161   },
 162   {
 163     REST_NODESKTOP,
 164     strExplorer,
 165     strNoDesktop,
 166     SHELL_NO_POLICY
 167   },
 168   {
 169     REST_NOFIND,
 170     strExplorer,
 171     strNoFind,
 172     SHELL_NO_POLICY
 173   },
 174   {
 175     REST_NODRIVES,
 176     strExplorer,
 177     strNoDrives,
 178     SHELL_NO_POLICY
 179   },
 180   {
 181     REST_NODRIVEAUTORUN,
 182     strExplorer,
 183     strNoDrivesAutoRun,
 184     SHELL_NO_POLICY
 185   },
 186   {
 187     REST_NODRIVETYPEAUTORUN,
 188     strExplorer,
 189     strNoDriveTypeAtRun,
 190     SHELL_NO_POLICY
 191   },
 192   {
 193     REST_NONETHOOD,
 194     strExplorer,
 195     strNoNetworkNeighborhood,
 196     SHELL_NO_POLICY
 197   },
 198   {
 199     REST_STARTBANNER,
 200     strExplorer,
 201     strNoStartBanner,
 202     SHELL_NO_POLICY
 203   },
 204   {
 205     REST_RESTRICTRUN,
 206     strExplorer,
 207     strRestrictRun,
 208     SHELL_NO_POLICY
 209   },
 210   {
 211     REST_NOPRINTERTABS,
 212     strExplorer,
 213     strNoPrintTab,
 214     SHELL_NO_POLICY
 215   },
 216   {
 217     REST_NOPRINTERDELETE,
 218     strExplorer,
 219     strNoDeletePrinters,
 220     SHELL_NO_POLICY
 221   },
 222   {
 223     REST_NOPRINTERADD,
 224     strExplorer,
 225     strNoAddPrinters,
 226     SHELL_NO_POLICY
 227   },
 228   {
 229     REST_NOSTARTMENUSUBFOLDERS,
 230     strExplorer,
 231     strNoStartMenuSubfolder,
 232     SHELL_NO_POLICY
 233   },
 234   {
 235     REST_MYDOCSONNET,
 236     strExplorer,
 237     strMyDocsOnNet,
 238     SHELL_NO_POLICY
 239   },
 240   {
 241     REST_NOEXITTODOS,
 242     strWinOldApp,
 243     strNoRealMode,
 244     SHELL_NO_POLICY
 245   },
 246   {
 247     REST_ENFORCESHELLEXTSECURITY,
 248     strExplorer,
 249     strEnforceShlExtSecurity,
 250     SHELL_NO_POLICY
 251   },
 252   {
 253     REST_LINKRESOLVEIGNORELINKINFO,
 254     strExplorer,
 255     strLnkResolveIgnoreLnkInfo,
 256     SHELL_NO_POLICY
 257   },
 258   {
 259     REST_NOCOMMONGROUPS,
 260     strExplorer,
 261     strNoCommonGroups,
 262     SHELL_NO_POLICY
 263   },
 264   {
 265     REST_SEPARATEDESKTOPPROCESS,
 266     strExplorer,
 267     strSeparateProcess,
 268     SHELL_NO_POLICY
 269   },
 270   {
 271     REST_NOWEB,
 272     strExplorer,
 273     strNoWebMenu,
 274     SHELL_NO_POLICY
 275   },
 276   {
 277     REST_NOTRAYCONTEXTMENU,
 278     strExplorer,
 279     strNoTrayContextMenu,
 280     SHELL_NO_POLICY
 281   },
 282   {
 283     REST_NOVIEWCONTEXTMENU,
 284     strExplorer,
 285     strNoViewContextMenu,
 286     SHELL_NO_POLICY
 287   },
 288   {
 289     REST_NONETCONNECTDISCONNECT,
 290     strExplorer,
 291     strNoNetConDis,
 292     SHELL_NO_POLICY
 293   },
 294   {
 295     REST_STARTMENULOGOFF,
 296     strExplorer,
 297     strNoLogoff,
 298     SHELL_NO_POLICY
 299   },
 300   {
 301     REST_NOSETTINGSASSIST,
 302     strExplorer,
 303     strNoSettingsWizard,
 304     SHELL_NO_POLICY
 305   },
 306   {
 307     REST_NOINTERNETICON,
 308     strExplorer,
 309     strNoInetIcon,
 310     SHELL_NO_POLICY
 311   },
 312   {
 313     REST_NORECENTDOCSHISTORY,
 314     strExplorer,
 315     strNoRecentDocHistory,
 316     SHELL_NO_POLICY
 317   },
 318   {
 319     REST_NORECENTDOCSMENU,
 320     strExplorer,
 321     strNoRecentDocMenu,
 322     SHELL_NO_POLICY
 323   },
 324   {
 325     REST_NOACTIVEDESKTOP,
 326     strExplorer,
 327     strNoActiveDesktop,
 328     SHELL_NO_POLICY
 329   },
 330   {
 331     REST_NOACTIVEDESKTOPCHANGES,
 332     strExplorer,
 333     strNoActiveDesktopChanges,
 334     SHELL_NO_POLICY
 335   },
 336   {
 337     REST_NOFAVORITESMENU,
 338     strExplorer,
 339     strNoFavoritesMenu,
 340     SHELL_NO_POLICY
 341   },
 342   {
 343     REST_CLEARRECENTDOCSONEXIT,
 344     strExplorer,
 345     strClearRecentDocs,
 346     SHELL_NO_POLICY
 347   },
 348   {
 349     REST_CLASSICSHELL,
 350     strExplorer,
 351     strClassicShell,
 352     SHELL_NO_POLICY
 353   },
 354   {
 355     REST_NOCUSTOMIZEWEBVIEW,
 356     strExplorer,
 357     strNoCustomWebView,
 358     SHELL_NO_POLICY
 359   },
 360   {
 361     REST_NOHTMLWALLPAPER,
 362     strActiveDesk,
 363     strNoHTMLWallpaper,
 364     SHELL_NO_POLICY
 365   },
 366   {
 367     REST_NOCHANGINGWALLPAPER,
 368     strActiveDesk,
 369     strNoChangeWallpaper,
 370     SHELL_NO_POLICY
 371   },
 372   {
 373     REST_NODESKCOMP,
 374     strActiveDesk,
 375     strNoComponent,
 376     SHELL_NO_POLICY
 377   },
 378   {
 379     REST_NOADDDESKCOMP,
 380     strActiveDesk,
 381     strNoAddComponent,
 382     SHELL_NO_POLICY
 383   },
 384   {
 385     REST_NODELDESKCOMP,
 386     strActiveDesk,
 387     strNoDelComponent,
 388     SHELL_NO_POLICY
 389   },
 390   {
 391     REST_NOCLOSEDESKCOMP,
 392     strActiveDesk,
 393     strNoCloseComponent,
 394     SHELL_NO_POLICY
 395   },
 396   {
 397     REST_NOCLOSE_DRAGDROPBAND,
 398     strActiveDesk,
 399     strNoCloseDragDrop,
 400     SHELL_NO_POLICY
 401   },
 402   {
 403     REST_NOMOVINGBAND,
 404     strActiveDesk,
 405     strNoMovingBand,
 406     SHELL_NO_POLICY
 407   },
 408   {
 409     REST_NOEDITDESKCOMP,
 410     strActiveDesk,
 411     strNoEditComponent,
 412     SHELL_NO_POLICY
 413   },
 414   {
 415     REST_NORESOLVESEARCH,
 416     strExplorer,
 417     strNoResolveSearch,
 418     SHELL_NO_POLICY
 419   },
 420   {
 421     REST_NORESOLVETRACK,
 422     strExplorer,
 423     strNoResolveTrk,
 424     SHELL_NO_POLICY
 425   },
 426   {
 427     REST_FORCECOPYACLWITHFILE,
 428     strExplorer,
 429     strForceCopyACLW,
 430     SHELL_NO_POLICY
 431   },
 432 #if (NTDDI_VERSION < NTDDI_LONGHORN)
 433   {
 434     REST_NOLOGO3CHANNELNOTIFY,
 435     strExplorer,
 436     strNoMSAppLogo,
 437     SHELL_NO_POLICY
 438   },
 439 #endif
 440   {
 441     REST_NOFORGETSOFTWAREUPDATE,
 442     strExplorer,
 443     strNoForgetSoftwareUpdate,
 444     SHELL_NO_POLICY
 445   },
 446   {
 447     REST_NOSETACTIVEDESKTOP,
 448     strExplorer,
 449     strNoSetActiveDesktop,
 450     SHELL_NO_POLICY
 451   },
 452   {
 453     REST_NOUPDATEWINDOWS,
 454     strExplorer,
 455     strNoWindowsUpdate,
 456     SHELL_NO_POLICY
 457   },
 458   {
 459     REST_NOCHANGESTARMENU,
 460     strExplorer,
 461     strNoChangeStartMenu,
 462     SHELL_NO_POLICY
 463   },
 464   {
 465     REST_NOFOLDEROPTIONS,
 466     strExplorer,
 467     strNoFolderOptions,
 468     SHELL_NO_POLICY
 469   },
 470   {
 471     REST_HASFINDCOMPUTERS,
 472     strExplorer,
 473     "FindComputers",
 474     SHELL_NO_POLICY
 475   },
 476   {
 477     REST_INTELLIMENUS,
 478     strExplorer,
 479     "IntelliMenus",
 480     SHELL_NO_POLICY
 481   },
 482   {
 483     REST_RUNDLGMEMCHECKBOX,
 484     strExplorer,
 485     "MemCheckBoxInRunDlg",
 486     SHELL_NO_POLICY
 487   },
 488   {
 489     REST_ARP_ShowPostSetup,
 490     strAddRemoveProgs,
 491     "ShowPostSetup",
 492     SHELL_NO_POLICY
 493   },
 494   {
 495     REST_NOCSC,
 496     strExplorer,
 497     "NoSyncAll",
 498     SHELL_NO_POLICY
 499   },
 500   {
 501     REST_NOCONTROLPANEL,
 502     strExplorer,
 503     "NoControlPanel",
 504     SHELL_NO_POLICY
 505   },
 506   {
 507     REST_ENUMWORKGROUP,
 508     strExplorer,
 509     "EnumWorkgroup",
 510     SHELL_NO_POLICY
 511   },
 512   {
 513     REST_ARP_NOARP,
 514     strAddRemoveProgs,
 515     "NoAddRemovePrograms",
 516     SHELL_NO_POLICY
 517   },
 518   {
 519     REST_ARP_NOREMOVEPAGE,
 520     strAddRemoveProgs,
 521     "NoRemovePage",
 522     SHELL_NO_POLICY
 523   },
 524   {
 525     REST_ARP_NOADDPAGE,
 526     strAddRemoveProgs,
 527     "NoAddPage",
 528     SHELL_NO_POLICY
 529   },
 530   {
 531     REST_ARP_NOWINSETUPPAGE,
 532     strAddRemoveProgs,
 533     "NoWindowsSetupPage",
 534     SHELL_NO_POLICY
 535   },
 536   {
 537     REST_GREYMSIADS,
 538     strExplorer,
 539     "",
 540     SHELL_NO_POLICY
 541   },
 542   {
 543     REST_NOCHANGEMAPPEDDRIVELABEL,
 544     strExplorer,
 545     "NoChangeMappedDriveLabel",
 546     SHELL_NO_POLICY
 547   },
 548   {
 549     REST_NOCHANGEMAPPEDDRIVECOMMENT,
 550     strExplorer,
 551     "NoChangeMappedDriveComment",
 552     SHELL_NO_POLICY
 553   },
 554   {
 555     REST_MaxRecentDocs,
 556     strExplorer,
 557     "MaxRecentDocs",
 558     SHELL_NO_POLICY
 559   },
 560   {
 561     REST_NONETWORKCONNECTIONS,
 562     strExplorer,
 563     "NoNetworkConnections",
 564     SHELL_NO_POLICY
 565   },
 566   {
 567     REST_FORCESTARTMENULOGOFF,
 568     strExplorer,
 569     "ForceStartMenuLogoff",
 570     SHELL_NO_POLICY
 571   },
 572   {
 573     REST_NOWEBVIEW,
 574     strExplorer,
 575      "NoWebView",
 576     SHELL_NO_POLICY
 577   },
 578   {
 579     REST_NOCUSTOMIZETHISFOLDER,
 580     strExplorer,
 581     "NoCustomizeThisFolder",
 582     SHELL_NO_POLICY
 583   },
 584   {
 585     REST_NOENCRYPTION,
 586     strExplorer,
 587     "NoEncryption",
 588     SHELL_NO_POLICY
 589   },
 590   {
 591     REST_ALLOWFRENCHENCRYPTION,
 592     strExplorer,
 593     "AllowFrenchEncryption",
 594     SHELL_NO_POLICY
 595   },
 596   {
 597     REST_DONTSHOWSUPERHIDDEN,
 598     strExplorer,
 599     "DontShowSuperHidden",
 600     SHELL_NO_POLICY
 601   },
 602   {
 603     REST_NOSHELLSEARCHBUTTON,
 604     strExplorer,
 605     "NoShellSearchButton",
 606     SHELL_NO_POLICY
 607   },
 608   {
 609     REST_NOHARDWARETAB,
 610     strExplorer,
 611     "NoHardwareTab",
 612     SHELL_NO_POLICY
 613   },
 614   {
 615     REST_NORUNASINSTALLPROMPT,
 616     strExplorer,
 617     "NoRunasInstallPrompt",
 618     SHELL_NO_POLICY
 619   },
 620   {
 621     REST_PROMPTRUNASINSTALLNETPATH,
 622     strExplorer,
 623     "PromptRunasInstallNetPath",
 624     SHELL_NO_POLICY
 625   },
 626   {
 627     REST_NOMANAGEMYCOMPUTERVERB,
 628     strExplorer,
 629     "NoManageMyComputerVerb",
 630     SHELL_NO_POLICY
 631   },
 632   {
 633     REST_NORECENTDOCSNETHOOD,
 634     strExplorer,
 635     "NoRecentDocsNetHood",
 636     SHELL_NO_POLICY
 637   },
 638   {
 639     REST_DISALLOWRUN,
 640     strExplorer,
 641     "DisallowRun",
 642     SHELL_NO_POLICY
 643   },
 644   {
 645     REST_NOWELCOMESCREEN,
 646     strExplorer,
 647     "NoWelcomeScreen",
 648     SHELL_NO_POLICY
 649   },
 650   {
 651     REST_RESTRICTCPL,
 652     strExplorer,
 653     "RestrictCpl",
 654     SHELL_NO_POLICY
 655   },
 656   {
 657     REST_DISALLOWCPL,
 658     strExplorer,
 659     "DisallowCpl",
 660     SHELL_NO_POLICY
 661   },
 662   {
 663     REST_NOSMBALLOONTIP,
 664     strExplorer,
 665     "NoSMBalloonTip",
 666     SHELL_NO_POLICY
 667   },
 668   {
 669     REST_NOSMHELP,
 670     strExplorer,
 671     "NoSMHelp",
 672     SHELL_NO_POLICY
 673   },
 674   {
 675     REST_NOWINKEYS,
 676     strExplorer,
 677     "NoWinKeys",
 678     SHELL_NO_POLICY
 679   },
 680   {
 681     REST_NOENCRYPTONMOVE,
 682     strExplorer,
 683     "NoEncryptOnMove",
 684     SHELL_NO_POLICY
 685   },
 686   {
 687     REST_NOLOCALMACHINERUN,
 688     strExplorer,
 689     "DisableLocalMachineRun",
 690     SHELL_NO_POLICY
 691   },
 692   {
 693     REST_NOCURRENTUSERRUN,
 694     strExplorer,
 695     "DisableCurrentUserRun",
 696     SHELL_NO_POLICY
 697   },
 698   {
 699     REST_NOLOCALMACHINERUNONCE,
 700     strExplorer,
 701     "DisableLocalMachineRunOnce",
 702     SHELL_NO_POLICY
 703   },
 704   {
 705     REST_NOCURRENTUSERRUNONCE,
 706     strExplorer,
 707     "DisableCurrentUserRunOnce",
 708     SHELL_NO_POLICY
 709   },
 710   {
 711     REST_FORCEACTIVEDESKTOPON,
 712     strExplorer,
 713     "ForceActiveDesktopOn",
 714     SHELL_NO_POLICY
 715   },
 716   {
 717     REST_NOCOMPUTERSNEARME,
 718     strExplorer,
 719     "NoComputersNearMe",
 720     SHELL_NO_POLICY
 721   },
 722   {
 723     REST_NOVIEWONDRIVE,
 724     strExplorer,
 725     "NoViewOnDrive",
 726     SHELL_NO_POLICY
 727   },
 728   {
 729     REST_NONETCRAWL,
 730     strExplorer,
 731     "NoNetCrawl",
 732     SHELL_NO_POLICY
 733   },
 734   {
 735     REST_NOSHAREDDOCUMENTS,
 736     strExplorer,
 737     "NoSharedDocs",
 738     SHELL_NO_POLICY
 739   },
 740   {
 741     REST_NOSMMYDOCS,
 742     strExplorer,
 743     "NoSMMyDocs",
 744     SHELL_NO_POLICY
 745   },
 746 /* 0x4000050 - 0x4000060 */
 747   {
 748     REST_NONLEGACYSHELLMODE,
 749     strExplorer,
 750     "NoneLegacyShellMode",
 751     SHELL_NO_POLICY
 752   },
 753   {
 754     REST_STARTRUNNOHOMEPATH,
 755     strExplorer,
 756     "StartRunNoHOMEPATH",
 757     SHELL_NO_POLICY
 758   },
 759 /* 0x4000061 - 0x4000086 */
 760   {
 761     REST_NODISCONNECT,
 762     strExplorer,
 763     "NoDisconnect",
 764     SHELL_NO_POLICY
 765   },
 766   {
 767     REST_NOSECURITY,
 768     strExplorer,
 769     "NoNTSecurity",
 770     SHELL_NO_POLICY
 771   },
 772   {
 773     REST_NOFILEASSOCIATE,
 774     strExplorer,
 775     "NoFileAssociate",
 776     SHELL_NO_POLICY
 777   },
 778   {
 779     (RESTRICTIONS)0x50000024,
 780     strExplorer,
 781     strNoFileURL,
 782     SHELL_NO_POLICY
 783   },
 784   {
 785     (RESTRICTIONS)0,
 786     0,
 787     0,
 788     SHELL_NO_POLICY
 789   }
 790 };
 791
 792 /*************************************************************************
 793  * SHRestricted                 [SHELL32.100]
 794  *
 795  * Get the value associated with a policy Id.
 796  *
 797  * PARAMS
 798  *     pol [I] Policy Id
 799  *
 800  * RETURNS
 801  *     The queried value for the policy.
 802  *
 803  * NOTES
 804  *     Exported by ordinal.
 805  *     This function caches the retrieved values to prevent unnecessary registry access,
 806  *     if SHInitRestricted() was previously called.
 807  *
 808  * REFERENCES
 809  *     a: MS System Policy Editor.
 810  *     b: 98Lite 2.0 (which uses many of these policy keys) http://www.98lite.net/
 811  *     c: 'The Windows 95 Registry', by John Woram, 1996 MIS: Press
 812  */
 813 DWORD WINAPI SHRestricted (RESTRICTIONS policy)
 814 {
 815     char regstr[256];
 816     HKEY    xhkey;
 817     DWORD   retval, datsize = 4;
 818     LPPOLICYDATA p;
 819
 820     TRACE("(%08x)\n", policy);
 821
 822     /* scan to see if we know this policy ID */
 823     for (p = sh32_policy_table; p->policy; p++)
 824     {
 825       if (policy == p->policy)
 826       {
 827         break;
 828       }
 829     }
 830
 831     if (p->policy == 0)
 832     {
 833         /* we don't know this policy, return 0 */
 834         TRACE("unknown policy: (%08x)\n", policy);
 835         return 0;
 836     }
 837
 838     /* we have a known policy */
 839
 840     /* first check if this policy has been cached, return it if so */
 841     if (p->cache != SHELL_NO_POLICY)
 842     {
 843         return p->cache;
 844     }
 845
 846     lstrcpyA(regstr, strRegistryPolicyA);
 847     lstrcatA(regstr, p->appstr);
 848
 849     /* return 0 and don't set the cache if any registry errors occur */
 850     retval = 0;
 851     if (RegOpenKeyA(HKEY_CURRENT_USER, regstr, &xhkey) == ERROR_SUCCESS)
 852     {
 853       if (RegQueryValueExA(xhkey, p->keystr, NULL, NULL, (LPBYTE)&retval, &datsize) == ERROR_SUCCESS)
 854       {
 855         p->cache = retval;
 856       }
 857       RegCloseKey(xhkey);
 858     }
 859     return retval;
 860 }
 861
 862 /*************************************************************************
 863  * SHInitRestricted          [SHELL32.244]
 864  *
 865  * Initialise the policy cache to speed up calls to SHRestricted().
 866  *
 867  * PARAMS
 868  *  unused    [I] Reserved.
 869  *  inpRegKey [I] Registry key to scan.
 870  *
 871  * RETURNS
 872  *  Success: -1. The policy cache is initialised.
 873  *  Failure: 0, if inpRegKey is any value other than NULL, "Policy", or
 874  *           "Software\Microsoft\Windows\CurrentVersion\Policies".
 875  *
 876  * NOTES
 877  *  Exported by ordinal. Introduced in Win98.
 878  */
 879 BOOL WINAPI SHInitRestricted(LPCVOID unused, LPCVOID inpRegKey)
 880 {
 881     TRACE("(%p, %p)\n", unused, inpRegKey);
 882
 883     /* first check - if input is non-NULL and points to the secret
 884        key string, then pass. Otherwise return 0.
 885      */
 886     if (inpRegKey != NULL)
 887     {
 888       if (SHELL_OsIsUnicode())
 889       {
 890         if (lstrcmpiW((LPCWSTR)inpRegKey, strRegistryPolicyW) &&
 891             lstrcmpiW((LPCWSTR)inpRegKey, strPolicyW))
 892           /* doesn't match, fail */
 893           return 0;
 894       }
 895       else
 896       {
 897         if (lstrcmpiA((LPCSTR)inpRegKey, strRegistryPolicyA) &&
 898             lstrcmpiA((LPCSTR)inpRegKey, strPolicyA))
 899           /* doesn't match, fail */
 900           return 0;
 901       }
 902     }
 903
 904     return TRUE;
 905 }