446 lines
19 KiB
C
446 lines
19 KiB
C
/*
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* Copyright 1999, 2000 Juergen Schmied <juergen.schmied@debitel.net>
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* Copyright 2003 CodeWeavers Inc. (Ulrich Czekalla)
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* Copyright 2006 Robert Reif
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*
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*/
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#include <stdarg.h>
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#include <string.h>
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#include "ntstatus.h"
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#define WIN32_NO_STATUS
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#include "windef.h"
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#include "winbase.h"
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#include "winerror.h"
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#include "winternl.h"
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#include "winioctl.h"
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#include "wine/debug.h"
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#include "wine/heap.h"
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WINE_DEFAULT_DEBUG_CHANNEL(security);
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/******************************************************************************
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* SID functions
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******************************************************************************/
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typedef struct _MAX_SID
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{
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/* same fields as struct _SID */
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BYTE Revision;
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BYTE SubAuthorityCount;
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SID_IDENTIFIER_AUTHORITY IdentifierAuthority;
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DWORD SubAuthority[SID_MAX_SUB_AUTHORITIES];
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} MAX_SID;
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typedef struct WELLKNOWNSID
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{
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WELL_KNOWN_SID_TYPE Type;
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MAX_SID Sid;
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} WELLKNOWNSID;
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static const WELLKNOWNSID WellKnownSids[] =
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{
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{ WinNullSid, { SID_REVISION, 1, { SECURITY_NULL_SID_AUTHORITY }, { SECURITY_NULL_RID } } },
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{ WinWorldSid, { SID_REVISION, 1, { SECURITY_WORLD_SID_AUTHORITY }, { SECURITY_WORLD_RID } } },
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{ WinLocalSid, { SID_REVISION, 1, { SECURITY_LOCAL_SID_AUTHORITY }, { SECURITY_LOCAL_RID } } },
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{ WinCreatorOwnerSid, { SID_REVISION, 1, { SECURITY_CREATOR_SID_AUTHORITY }, { SECURITY_CREATOR_OWNER_RID } } },
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{ WinCreatorGroupSid, { SID_REVISION, 1, { SECURITY_CREATOR_SID_AUTHORITY }, { SECURITY_CREATOR_GROUP_RID } } },
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{ WinCreatorOwnerRightsSid, { SID_REVISION, 1, { SECURITY_CREATOR_SID_AUTHORITY }, { SECURITY_CREATOR_OWNER_RIGHTS_RID } } },
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{ WinCreatorOwnerServerSid, { SID_REVISION, 1, { SECURITY_CREATOR_SID_AUTHORITY }, { SECURITY_CREATOR_OWNER_SERVER_RID } } },
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{ WinCreatorGroupServerSid, { SID_REVISION, 1, { SECURITY_CREATOR_SID_AUTHORITY }, { SECURITY_CREATOR_GROUP_SERVER_RID } } },
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{ WinNtAuthoritySid, { SID_REVISION, 0, { SECURITY_NT_AUTHORITY }, { SECURITY_NULL_RID } } },
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{ WinDialupSid, { SID_REVISION, 1, { SECURITY_NT_AUTHORITY }, { SECURITY_DIALUP_RID } } },
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{ WinNetworkSid, { SID_REVISION, 1, { SECURITY_NT_AUTHORITY }, { SECURITY_NETWORK_RID } } },
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{ WinBatchSid, { SID_REVISION, 1, { SECURITY_NT_AUTHORITY }, { SECURITY_BATCH_RID } } },
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{ WinInteractiveSid, { SID_REVISION, 1, { SECURITY_NT_AUTHORITY }, { SECURITY_INTERACTIVE_RID } } },
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{ WinServiceSid, { SID_REVISION, 1, { SECURITY_NT_AUTHORITY }, { SECURITY_SERVICE_RID } } },
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{ WinAnonymousSid, { SID_REVISION, 1, { SECURITY_NT_AUTHORITY }, { SECURITY_ANONYMOUS_LOGON_RID } } },
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{ WinProxySid, { SID_REVISION, 1, { SECURITY_NT_AUTHORITY }, { SECURITY_PROXY_RID } } },
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{ WinEnterpriseControllersSid, { SID_REVISION, 1, { SECURITY_NT_AUTHORITY }, { SECURITY_ENTERPRISE_CONTROLLERS_RID } } },
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{ WinSelfSid, { SID_REVISION, 1, { SECURITY_NT_AUTHORITY }, { SECURITY_PRINCIPAL_SELF_RID } } },
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{ WinAuthenticatedUserSid, { SID_REVISION, 1, { SECURITY_NT_AUTHORITY }, { SECURITY_AUTHENTICATED_USER_RID } } },
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{ WinRestrictedCodeSid, { SID_REVISION, 1, { SECURITY_NT_AUTHORITY }, { SECURITY_RESTRICTED_CODE_RID } } },
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{ WinTerminalServerSid, { SID_REVISION, 1, { SECURITY_NT_AUTHORITY }, { SECURITY_TERMINAL_SERVER_RID } } },
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{ WinRemoteLogonIdSid, { SID_REVISION, 1, { SECURITY_NT_AUTHORITY }, { SECURITY_REMOTE_LOGON_RID } } },
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{ WinLogonIdsSid, { SID_REVISION, SECURITY_LOGON_IDS_RID_COUNT, { SECURITY_NT_AUTHORITY }, { SECURITY_LOGON_IDS_RID } } },
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{ WinLocalSystemSid, { SID_REVISION, 1, { SECURITY_NT_AUTHORITY }, { SECURITY_LOCAL_SYSTEM_RID } } },
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{ WinLocalServiceSid, { SID_REVISION, 1, { SECURITY_NT_AUTHORITY }, { SECURITY_LOCAL_SERVICE_RID } } },
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{ WinNetworkServiceSid, { SID_REVISION, 1, { SECURITY_NT_AUTHORITY }, { SECURITY_NETWORK_SERVICE_RID } } },
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{ WinBuiltinDomainSid, { SID_REVISION, 1, { SECURITY_NT_AUTHORITY }, { SECURITY_BUILTIN_DOMAIN_RID } } },
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{ WinBuiltinAdministratorsSid, { SID_REVISION, 2, { SECURITY_NT_AUTHORITY }, { SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_ADMINS } } },
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{ WinBuiltinUsersSid, { SID_REVISION, 2, { SECURITY_NT_AUTHORITY }, { SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_USERS } } },
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{ WinBuiltinGuestsSid, { SID_REVISION, 2, { SECURITY_NT_AUTHORITY }, { SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_GUESTS } } },
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{ WinBuiltinPowerUsersSid, { SID_REVISION, 2, { SECURITY_NT_AUTHORITY }, { SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_POWER_USERS } } },
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{ WinBuiltinAccountOperatorsSid, { SID_REVISION, 2, { SECURITY_NT_AUTHORITY }, { SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_ACCOUNT_OPS } } },
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{ WinBuiltinSystemOperatorsSid, { SID_REVISION, 2, { SECURITY_NT_AUTHORITY }, { SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_SYSTEM_OPS } } },
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{ WinBuiltinPrintOperatorsSid, { SID_REVISION, 2, { SECURITY_NT_AUTHORITY }, { SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_PRINT_OPS } } },
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{ WinBuiltinBackupOperatorsSid, { SID_REVISION, 2, { SECURITY_NT_AUTHORITY }, { SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_BACKUP_OPS } } },
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{ WinBuiltinReplicatorSid, { SID_REVISION, 2, { SECURITY_NT_AUTHORITY }, { SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_REPLICATOR } } },
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{ WinBuiltinPreWindows2000CompatibleAccessSid, { SID_REVISION, 2, { SECURITY_NT_AUTHORITY }, { SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_PREW2KCOMPACCESS } } },
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{ WinBuiltinRemoteDesktopUsersSid, { SID_REVISION, 2, { SECURITY_NT_AUTHORITY }, { SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_REMOTE_DESKTOP_USERS } } },
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{ WinBuiltinNetworkConfigurationOperatorsSid, { SID_REVISION, 2, { SECURITY_NT_AUTHORITY }, { SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_NETWORK_CONFIGURATION_OPS } } },
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{ WinNTLMAuthenticationSid, { SID_REVISION, 2, { SECURITY_NT_AUTHORITY }, { SECURITY_PACKAGE_BASE_RID, SECURITY_PACKAGE_NTLM_RID } } },
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{ WinDigestAuthenticationSid, { SID_REVISION, 2, { SECURITY_NT_AUTHORITY }, { SECURITY_PACKAGE_BASE_RID, SECURITY_PACKAGE_DIGEST_RID } } },
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{ WinSChannelAuthenticationSid, { SID_REVISION, 2, { SECURITY_NT_AUTHORITY }, { SECURITY_PACKAGE_BASE_RID, SECURITY_PACKAGE_SCHANNEL_RID } } },
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{ WinThisOrganizationSid, { SID_REVISION, 1, { SECURITY_NT_AUTHORITY }, { SECURITY_THIS_ORGANIZATION_RID } } },
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{ WinOtherOrganizationSid, { SID_REVISION, 1, { SECURITY_NT_AUTHORITY }, { SECURITY_OTHER_ORGANIZATION_RID } } },
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{ WinBuiltinIncomingForestTrustBuildersSid, { SID_REVISION, 2, { SECURITY_NT_AUTHORITY }, { SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_INCOMING_FOREST_TRUST_BUILDERS } } },
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{ WinBuiltinPerfMonitoringUsersSid, { SID_REVISION, 2, { SECURITY_NT_AUTHORITY }, { SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_MONITORING_USERS } } },
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{ WinBuiltinPerfLoggingUsersSid, { SID_REVISION, 2, { SECURITY_NT_AUTHORITY }, { SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_LOGGING_USERS } } },
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{ WinBuiltinAuthorizationAccessSid, { SID_REVISION, 2, { SECURITY_NT_AUTHORITY }, { SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_AUTHORIZATIONACCESS } } },
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{ WinBuiltinTerminalServerLicenseServersSid, { SID_REVISION, 2, { SECURITY_NT_AUTHORITY }, { SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_TS_LICENSE_SERVERS } } },
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{ WinBuiltinDCOMUsersSid, { SID_REVISION, 2, { SECURITY_NT_AUTHORITY }, { SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_DCOM_USERS } } },
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{ WinLowLabelSid, { SID_REVISION, 1, { SECURITY_MANDATORY_LABEL_AUTHORITY}, { SECURITY_MANDATORY_LOW_RID} } },
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{ WinMediumLabelSid, { SID_REVISION, 1, { SECURITY_MANDATORY_LABEL_AUTHORITY}, { SECURITY_MANDATORY_MEDIUM_RID } } },
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{ WinHighLabelSid, { SID_REVISION, 1, { SECURITY_MANDATORY_LABEL_AUTHORITY}, { SECURITY_MANDATORY_HIGH_RID } } },
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{ WinSystemLabelSid, { SID_REVISION, 1, { SECURITY_MANDATORY_LABEL_AUTHORITY}, { SECURITY_MANDATORY_SYSTEM_RID } } },
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{ WinBuiltinAnyPackageSid, { SID_REVISION, 2, { SECURITY_APP_PACKAGE_AUTHORITY }, { SECURITY_APP_PACKAGE_BASE_RID, SECURITY_BUILTIN_PACKAGE_ANY_PACKAGE } } },
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};
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/* these SIDs must be constructed as relative to some domain - only the RID is well-known */
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typedef struct WELLKNOWNRID
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{
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WELL_KNOWN_SID_TYPE Type;
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DWORD Rid;
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} WELLKNOWNRID;
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static const WELLKNOWNRID WellKnownRids[] =
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{
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{ WinAccountAdministratorSid, DOMAIN_USER_RID_ADMIN },
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{ WinAccountGuestSid, DOMAIN_USER_RID_GUEST },
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{ WinAccountKrbtgtSid, DOMAIN_USER_RID_KRBTGT },
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{ WinAccountDomainAdminsSid, DOMAIN_GROUP_RID_ADMINS },
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{ WinAccountDomainUsersSid, DOMAIN_GROUP_RID_USERS },
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{ WinAccountDomainGuestsSid, DOMAIN_GROUP_RID_GUESTS },
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{ WinAccountComputersSid, DOMAIN_GROUP_RID_COMPUTERS },
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{ WinAccountControllersSid, DOMAIN_GROUP_RID_CONTROLLERS },
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{ WinAccountCertAdminsSid, DOMAIN_GROUP_RID_CERT_ADMINS },
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{ WinAccountSchemaAdminsSid, DOMAIN_GROUP_RID_SCHEMA_ADMINS },
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{ WinAccountEnterpriseAdminsSid, DOMAIN_GROUP_RID_ENTERPRISE_ADMINS },
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{ WinAccountPolicyAdminsSid, DOMAIN_GROUP_RID_POLICY_ADMINS },
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{ WinAccountRasAndIasServersSid, DOMAIN_ALIAS_RID_RAS_SERVERS },
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};
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static const char *debugstr_sid( PSID sid )
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{
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int auth;
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SID * psid = sid;
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if (psid == NULL) return "(null)";
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auth = psid->IdentifierAuthority.Value[5] +
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(psid->IdentifierAuthority.Value[4] << 8) +
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(psid->IdentifierAuthority.Value[3] << 16) +
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(psid->IdentifierAuthority.Value[2] << 24);
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switch (psid->SubAuthorityCount) {
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case 0:
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return wine_dbg_sprintf("S-%d-%d", psid->Revision, auth);
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case 1:
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return wine_dbg_sprintf("S-%d-%d-%u", psid->Revision, auth,
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psid->SubAuthority[0]);
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case 2:
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return wine_dbg_sprintf("S-%d-%d-%u-%u", psid->Revision, auth,
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psid->SubAuthority[0], psid->SubAuthority[1]);
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case 3:
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return wine_dbg_sprintf("S-%d-%d-%u-%u-%u", psid->Revision, auth,
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psid->SubAuthority[0], psid->SubAuthority[1], psid->SubAuthority[2]);
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case 4:
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return wine_dbg_sprintf("S-%d-%d-%u-%u-%u-%u", psid->Revision, auth,
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psid->SubAuthority[0], psid->SubAuthority[1], psid->SubAuthority[2],
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psid->SubAuthority[3]);
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case 5:
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return wine_dbg_sprintf("S-%d-%d-%u-%u-%u-%u-%u", psid->Revision, auth,
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psid->SubAuthority[0], psid->SubAuthority[1], psid->SubAuthority[2],
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psid->SubAuthority[3], psid->SubAuthority[4]);
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case 6:
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return wine_dbg_sprintf("S-%d-%d-%u-%u-%u-%u-%u-%u", psid->Revision, auth,
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psid->SubAuthority[3], psid->SubAuthority[1], psid->SubAuthority[2],
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psid->SubAuthority[0], psid->SubAuthority[4], psid->SubAuthority[5]);
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case 7:
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return wine_dbg_sprintf("S-%d-%d-%u-%u-%u-%u-%u-%u-%u", psid->Revision, auth,
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psid->SubAuthority[0], psid->SubAuthority[1], psid->SubAuthority[2],
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psid->SubAuthority[3], psid->SubAuthority[4], psid->SubAuthority[5],
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psid->SubAuthority[6]);
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case 8:
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return wine_dbg_sprintf("S-%d-%d-%u-%u-%u-%u-%u-%u-%u-%u", psid->Revision, auth,
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psid->SubAuthority[0], psid->SubAuthority[1], psid->SubAuthority[2],
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psid->SubAuthority[3], psid->SubAuthority[4], psid->SubAuthority[5],
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psid->SubAuthority[6], psid->SubAuthority[7]);
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}
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return "(too-big)";
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}
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static BOOL set_ntstatus( NTSTATUS status )
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{
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if (status) SetLastError( RtlNtStatusToDosError( status ));
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return !status;
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}
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/******************************************************************************
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* AllocateAndInitializeSid (kernelbase.@)
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*/
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BOOL WINAPI AllocateAndInitializeSid( PSID_IDENTIFIER_AUTHORITY auth, BYTE count,
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DWORD auth0, DWORD auth1, DWORD auth2, DWORD auth3,
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DWORD auth4, DWORD auth5, DWORD auth6, DWORD auth7, PSID *sid )
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{
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return set_ntstatus( RtlAllocateAndInitializeSid( auth, count, auth0, auth1, auth2, auth3,
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auth4, auth5, auth6, auth7, sid ));
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}
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/***********************************************************************
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* AllocateLocallyUniqueId (kernelbase.@)
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*/
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BOOL WINAPI AllocateLocallyUniqueId( PLUID luid )
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{
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return set_ntstatus( NtAllocateLocallyUniqueId( luid ));
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}
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/******************************************************************************
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* CopySid (kernelbase.@)
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*/
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BOOL WINAPI CopySid( DWORD len, PSID dest, PSID source )
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{
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return RtlCopySid( len, dest, source );
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}
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/******************************************************************************
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* EqualPrefixSid (kernelbase.@)
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*/
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BOOL WINAPI EqualPrefixSid( PSID sid1, PSID sid2 )
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{
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return RtlEqualPrefixSid( sid1, sid2 );
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}
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/******************************************************************************
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* EqualSid (kernelbase.@)
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*/
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BOOL WINAPI EqualSid( PSID sid1, PSID sid2 )
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{
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BOOL ret = RtlEqualSid( sid1, sid2 );
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SetLastError(ERROR_SUCCESS);
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return ret;
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}
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/******************************************************************************
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* FreeSid (kernelbase.@)
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*/
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void * WINAPI FreeSid( PSID pSid )
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{
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RtlFreeSid(pSid);
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return NULL; /* is documented like this */
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}
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/******************************************************************************
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* GetLengthSid (kernelbase.@)
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*/
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DWORD WINAPI GetLengthSid( PSID sid )
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{
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return RtlLengthSid( sid );
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}
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/******************************************************************************
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* GetSidIdentifierAuthority (kernelbase.@)
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*/
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PSID_IDENTIFIER_AUTHORITY WINAPI GetSidIdentifierAuthority( PSID sid )
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{
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SetLastError(ERROR_SUCCESS);
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return RtlIdentifierAuthoritySid( sid );
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}
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/******************************************************************************
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* GetSidLengthRequired (kernelbase.@)
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*/
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DWORD WINAPI GetSidLengthRequired( BYTE count )
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{
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return RtlLengthRequiredSid( count );
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}
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/******************************************************************************
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* GetSidSubAuthority (kernelbase.@)
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*/
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PDWORD WINAPI GetSidSubAuthority( PSID sid, DWORD auth )
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{
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SetLastError(ERROR_SUCCESS);
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return RtlSubAuthoritySid( sid, auth );
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}
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/******************************************************************************
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* GetSidSubAuthorityCount (kernelbase.@)
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*/
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PUCHAR WINAPI GetSidSubAuthorityCount( PSID sid )
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{
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SetLastError(ERROR_SUCCESS);
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return RtlSubAuthorityCountSid( sid );
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}
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/******************************************************************************
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* GetWindowsAccountDomainSid (kernelbase.@)
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*/
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BOOL WINAPI GetWindowsAccountDomainSid( PSID sid, PSID domain_sid, DWORD *size )
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{
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SID_IDENTIFIER_AUTHORITY domain_ident = { SECURITY_NT_AUTHORITY };
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DWORD required_size;
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int i;
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FIXME( "(%p %p %p): semi-stub\n", sid, domain_sid, size );
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if (!sid || !IsValidSid( sid ))
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{
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SetLastError( ERROR_INVALID_SID );
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return FALSE;
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}
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if (!size)
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{
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SetLastError( ERROR_INVALID_PARAMETER );
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return FALSE;
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}
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if (*GetSidSubAuthorityCount( sid ) < 4)
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{
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SetLastError( ERROR_INVALID_SID );
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return FALSE;
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}
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required_size = GetSidLengthRequired( 4 );
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if (*size < required_size || !domain_sid)
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{
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*size = required_size;
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SetLastError( domain_sid ? ERROR_INSUFFICIENT_BUFFER : ERROR_INVALID_PARAMETER );
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return FALSE;
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}
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InitializeSid( domain_sid, &domain_ident, 4 );
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for (i = 0; i < 4; i++)
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*GetSidSubAuthority( domain_sid, i ) = *GetSidSubAuthority( sid, i );
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*size = required_size;
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return TRUE;
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}
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/******************************************************************************
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* InitializeSid (kernelbase.@)
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*/
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BOOL WINAPI InitializeSid ( PSID sid, PSID_IDENTIFIER_AUTHORITY auth, BYTE count )
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{
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return RtlInitializeSid( sid, auth, count );
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}
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/******************************************************************************
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* IsValidSid (kernelbase.@)
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*/
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BOOL WINAPI IsValidSid( PSID sid )
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{
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return RtlValidSid( sid );
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}
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/******************************************************************************
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* CreateWellKnownSid (kernelbase.@)
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*/
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BOOL WINAPI CreateWellKnownSid( WELL_KNOWN_SID_TYPE type, PSID domain, PSID sid, DWORD *size )
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{
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unsigned int i;
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TRACE("(%d, %s, %p, %p)\n", type, debugstr_sid(domain), sid, size);
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if (size == NULL || (domain && !IsValidSid(domain)))
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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for (i = 0; i < ARRAY_SIZE(WellKnownSids); i++)
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{
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if (WellKnownSids[i].Type == type)
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{
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DWORD length = GetSidLengthRequired(WellKnownSids[i].Sid.SubAuthorityCount);
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if (*size < length)
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{
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*size = length;
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SetLastError(ERROR_INSUFFICIENT_BUFFER);
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return FALSE;
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}
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if (!sid)
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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CopyMemory(sid, &WellKnownSids[i].Sid.Revision, length);
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*size = length;
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return TRUE;
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}
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}
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if (domain == NULL || *GetSidSubAuthorityCount(domain) == SID_MAX_SUB_AUTHORITIES)
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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for (i = 0; i < ARRAY_SIZE(WellKnownRids); i++)
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{
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if (WellKnownRids[i].Type == type)
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{
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UCHAR domain_subauth = *GetSidSubAuthorityCount(domain);
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DWORD domain_sid_length = GetSidLengthRequired(domain_subauth);
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DWORD output_sid_length = GetSidLengthRequired(domain_subauth + 1);
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if (*size < output_sid_length)
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{
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*size = output_sid_length;
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SetLastError(ERROR_INSUFFICIENT_BUFFER);
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return FALSE;
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}
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if (!sid)
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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CopyMemory(sid, domain, domain_sid_length);
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(*GetSidSubAuthorityCount(sid))++;
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(*GetSidSubAuthority(sid, domain_subauth)) = WellKnownRids[i].Rid;
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*size = output_sid_length;
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return TRUE;
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}
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}
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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/******************************************************************************
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* IsWellKnownSid (kernelbase.@)
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*/
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BOOL WINAPI IsWellKnownSid( PSID sid, WELL_KNOWN_SID_TYPE type )
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{
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unsigned int i;
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TRACE("(%s, %d)\n", debugstr_sid(sid), type);
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for (i = 0; i < ARRAY_SIZE(WellKnownSids); i++)
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if (WellKnownSids[i].Type == type)
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if (EqualSid(sid, (PSID)&WellKnownSids[i].Sid.Revision))
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return TRUE;
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return FALSE;
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}
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