Source code of Windows XP (NT5)
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964 lines
24 KiB

#include "windows.h"
#include <stdio.h>
#include <tchar.h>
#include <string.h>
#include <conio.h>
#include "dcomperm.h"
#define _WIN32_DCOM
#include <objbase.h>
DWORD
CopyACL (
PACL OldACL,
PACL NewACL
)
{
ACL_SIZE_INFORMATION aclSizeInfo;
LPVOID ace;
ACE_HEADER *aceHeader;
ULONG i;
GetAclInformation (OldACL, (LPVOID) &aclSizeInfo, (DWORD) sizeof (aclSizeInfo), AclSizeInformation);
//
// Copy all of the ACEs to the new ACL
//
for (i = 0; i < aclSizeInfo.AceCount; i++)
{
//
// Get the ACE and header info
//
if (!GetAce (OldACL, i, &ace))
return GetLastError();
aceHeader = (ACE_HEADER *) ace;
//
// Add the ACE to the new list
//
if (!AddAce (NewACL, ACL_REVISION, 0xffffffff, ace, aceHeader->AceSize))
return GetLastError();
}
return ERROR_SUCCESS;
}
DWORD
AddAccessDeniedACEToACL (
PACL *Acl,
DWORD PermissionMask,
LPTSTR Principal
)
{
ACL_SIZE_INFORMATION aclSizeInfo;
int aclSize;
DWORD returnValue = ERROR_SUCCESS;
PSID principalSID = NULL;
PACL oldACL, newACL;
BOOL bWellKnownSID = FALSE;
oldACL = *Acl;
returnValue = GetPrincipalSID (Principal, &principalSID, &bWellKnownSID);
if (returnValue != ERROR_SUCCESS)
return returnValue;
GetAclInformation (oldACL, (LPVOID) &aclSizeInfo, (DWORD) sizeof (ACL_SIZE_INFORMATION), AclSizeInformation);
aclSize = aclSizeInfo.AclBytesInUse +
sizeof (ACL) + sizeof (ACCESS_DENIED_ACE) +
GetLengthSid (principalSID) - sizeof (DWORD);
newACL = (PACL) new BYTE [aclSize];
if (!InitializeAcl (newACL, aclSize, ACL_REVISION))
{
returnValue = GetLastError();
goto cleanup;
}
if (!AddAccessDeniedAce (newACL, ACL_REVISION2, PermissionMask, principalSID))
{
returnValue = GetLastError();
goto cleanup;
}
returnValue = CopyACL (oldACL, newACL);
if (returnValue != ERROR_SUCCESS)
{
goto cleanup;
}
*Acl = newACL;
cleanup:
if (principalSID) {
if (bWellKnownSID)
FreeSid (principalSID);
else
free (principalSID);
}
return returnValue;
}
DWORD
AddAccessAllowedACEToACL (
PACL *Acl,
DWORD PermissionMask,
LPTSTR Principal
)
{
ACL_SIZE_INFORMATION aclSizeInfo;
int aclSize;
DWORD returnValue = ERROR_SUCCESS;
PSID principalSID = NULL;
PACL oldACL, newACL;
BOOL bWellKnownSID = FALSE;
oldACL = *Acl;
returnValue = GetPrincipalSID (Principal, &principalSID, &bWellKnownSID);
if (returnValue != ERROR_SUCCESS)
return returnValue;
GetAclInformation (oldACL, (LPVOID) &aclSizeInfo, (DWORD) sizeof (ACL_SIZE_INFORMATION), AclSizeInformation);
aclSize = aclSizeInfo.AclBytesInUse +
sizeof (ACL) + sizeof (ACCESS_ALLOWED_ACE) +
GetLengthSid (principalSID) - sizeof (DWORD);
newACL = (PACL) new BYTE [aclSize];
if (!InitializeAcl (newACL, aclSize, ACL_REVISION))
{
returnValue = GetLastError();
goto cleanup;
}
returnValue = CopyACL (oldACL, newACL);
if (returnValue != ERROR_SUCCESS)
{
goto cleanup;
}
if (!AddAccessAllowedAce (newACL, ACL_REVISION2, PermissionMask, principalSID))
{
returnValue = GetLastError();
goto cleanup;
}
*Acl = newACL;
cleanup:
if (principalSID) {
if (bWellKnownSID)
FreeSid (principalSID);
else
free (principalSID);
}
return returnValue;
}
DWORD
RemovePrincipalFromACL (
PACL Acl,
LPTSTR Principal
)
{
ACL_SIZE_INFORMATION aclSizeInfo;
ULONG i;
LPVOID ace;
ACCESS_ALLOWED_ACE *accessAllowedAce;
ACCESS_DENIED_ACE *accessDeniedAce;
SYSTEM_AUDIT_ACE *systemAuditAce;
PSID principalSID = NULL;
DWORD returnValue = ERROR_SUCCESS;
ACE_HEADER *aceHeader;
BOOL bWellKnownSID = FALSE;
returnValue = GetPrincipalSID (Principal, &principalSID, &bWellKnownSID);
if (returnValue != ERROR_SUCCESS)
return returnValue;
GetAclInformation (Acl, (LPVOID) &aclSizeInfo, (DWORD) sizeof (ACL_SIZE_INFORMATION), AclSizeInformation);
for (i = 0; i < aclSizeInfo.AceCount; i++)
{
if (!GetAce (Acl, i, &ace))
{
returnValue = GetLastError();
break;
}
aceHeader = (ACE_HEADER *) ace;
if (aceHeader->AceType == ACCESS_ALLOWED_ACE_TYPE)
{
accessAllowedAce = (ACCESS_ALLOWED_ACE *) ace;
if (EqualSid (principalSID, (PSID) &accessAllowedAce->SidStart))
{
DeleteAce (Acl, i);
break;
}
} else
if (aceHeader->AceType == ACCESS_DENIED_ACE_TYPE)
{
accessDeniedAce = (ACCESS_DENIED_ACE *) ace;
if (EqualSid (principalSID, (PSID) &accessDeniedAce->SidStart))
{
DeleteAce (Acl, i);
break;
}
} else
if (aceHeader->AceType == SYSTEM_AUDIT_ACE_TYPE)
{
systemAuditAce = (SYSTEM_AUDIT_ACE *) ace;
if (EqualSid (principalSID, (PSID) &systemAuditAce->SidStart))
{
DeleteAce (Acl, i);
break;
}
}
}
if (principalSID) {
if (bWellKnownSID)
FreeSid (principalSID);
else
free (principalSID);
}
return returnValue;
}
DWORD
GetCurrentUserSID (
PSID *Sid
)
{
DWORD dwReturn = ERROR_SUCCESS;
TOKEN_USER *tokenUser = NULL;
HANDLE tokenHandle = NULL;
DWORD tokenSize;
DWORD sidLength;
if (OpenProcessToken (GetCurrentProcess(), TOKEN_QUERY, &tokenHandle))
{
GetTokenInformation (tokenHandle, TokenUser, tokenUser, 0, &tokenSize);
tokenUser = (TOKEN_USER *) malloc (tokenSize);
if (GetTokenInformation (tokenHandle, TokenUser, tokenUser, tokenSize, &tokenSize))
{
sidLength = GetLengthSid (tokenUser->User.Sid);
*Sid = (PSID) malloc (sidLength);
memcpy (*Sid, tokenUser->User.Sid, sidLength);
CloseHandle (tokenHandle);
} else
dwReturn = GetLastError();
if (tokenUser)
free(tokenUser);
} else
dwReturn = GetLastError();
return dwReturn;
}
DWORD
GetPrincipalSID (
LPTSTR Principal,
PSID *Sid,
BOOL *pbWellKnownSID
)
{
SID_IDENTIFIER_AUTHORITY SidIdentifierNTAuthority = SECURITY_NT_AUTHORITY;
SID_IDENTIFIER_AUTHORITY SidIdentifierWORLDAuthority = SECURITY_WORLD_SID_AUTHORITY;
PSID_IDENTIFIER_AUTHORITY pSidIdentifierAuthority;
BYTE Count;
DWORD dwRID[8];
*pbWellKnownSID = TRUE;
memset(&(dwRID[0]), 0, 8 * sizeof(DWORD));
//_strlwr( Principal);
if ( !strcmp( Principal,"administrators") ) {
// Administrators group
pSidIdentifierAuthority = &SidIdentifierNTAuthority;
Count = 2;
dwRID[0] = SECURITY_BUILTIN_DOMAIN_RID;
dwRID[1] = DOMAIN_ALIAS_RID_ADMINS;
} else if ( !strcmp( Principal, "system") ) {
// SYSTEM
pSidIdentifierAuthority = &SidIdentifierNTAuthority;
Count = 1;
dwRID[0] = SECURITY_LOCAL_SYSTEM_RID;
} else if ( !strcmp( Principal,"interactive") ) {
// INTERACTIVE
pSidIdentifierAuthority = &SidIdentifierNTAuthority;
Count = 1;
dwRID[0] = SECURITY_INTERACTIVE_RID;
} else if ( !strcmp( Principal,"everyone") ) {
// Everyone
pSidIdentifierAuthority = &SidIdentifierWORLDAuthority;
Count = 1;
dwRID[0] = SECURITY_WORLD_RID;
} else {
*pbWellKnownSID = FALSE;
}
if (*pbWellKnownSID) {
if ( !AllocateAndInitializeSid(pSidIdentifierAuthority,
(BYTE)Count,
dwRID[0],
dwRID[1],
dwRID[2],
dwRID[3],
dwRID[4],
dwRID[5],
dwRID[6],
dwRID[7],
Sid) )
return GetLastError();
} else {
// get regular account sid
DWORD sidSize;
TCHAR refDomain [256];
DWORD refDomainSize;
DWORD returnValue;
SID_NAME_USE snu;
sidSize = 0;
refDomainSize = 255;
LookupAccountName (NULL,
Principal,
*Sid,
&sidSize,
refDomain,
&refDomainSize,
&snu);
returnValue = GetLastError();
if (returnValue != ERROR_INSUFFICIENT_BUFFER)
return returnValue;
*Sid = (PSID) malloc (sidSize);
refDomainSize = 255;
if (!LookupAccountName (NULL,
Principal,
*Sid,
&sidSize,
refDomain,
&refDomainSize,
&snu))
{
return GetLastError();
}
}
return ERROR_SUCCESS;
}
DWORD
CreateNewSD (
SECURITY_DESCRIPTOR **SD
)
{
PACL dacl;
DWORD sidLength;
PSID sid;
PSID groupSID;
PSID ownerSID;
DWORD returnValue;
*SD = NULL;
returnValue = GetCurrentUserSID (&sid);
if (returnValue != ERROR_SUCCESS) {
if (sid)
free(sid);
return returnValue;
}
sidLength = GetLengthSid (sid);
*SD = (SECURITY_DESCRIPTOR *) malloc (
(sizeof (ACL)+sizeof (ACCESS_ALLOWED_ACE)+sidLength) +
(2 * sidLength) +
sizeof (SECURITY_DESCRIPTOR));
groupSID = (SID *) (*SD + 1);
ownerSID = (SID *) (((BYTE *) groupSID) + sidLength);
dacl = (ACL *) (((BYTE *) ownerSID) + sidLength);
if (!InitializeSecurityDescriptor (*SD, SECURITY_DESCRIPTOR_REVISION))
{
free (*SD);
free (sid);
return GetLastError();
}
if (!InitializeAcl (dacl,
sizeof (ACL)+sizeof (ACCESS_ALLOWED_ACE)+sidLength,
ACL_REVISION2))
{
free (*SD);
free (sid);
return GetLastError();
}
if (!AddAccessAllowedAce (dacl,
ACL_REVISION2,
COM_RIGHTS_EXECUTE,
sid))
{
free (*SD);
free (sid);
return GetLastError();
}
if (!SetSecurityDescriptorDacl (*SD, TRUE, dacl, FALSE))
{
free (*SD);
free (sid);
return GetLastError();
}
memcpy (groupSID, sid, sidLength);
if (!SetSecurityDescriptorGroup (*SD, groupSID, FALSE))
{
free (*SD);
free (sid);
return GetLastError();
}
memcpy (ownerSID, sid, sidLength);
if (!SetSecurityDescriptorOwner (*SD, ownerSID, FALSE))
{
free (*SD);
free (sid);
return GetLastError();
}
if (sid)
free(sid);
return ERROR_SUCCESS;
}
DWORD
MakeSDAbsolute (
PSECURITY_DESCRIPTOR OldSD,
PSECURITY_DESCRIPTOR *NewSD
)
{
PSECURITY_DESCRIPTOR sd = NULL;
DWORD descriptorSize;
DWORD daclSize;
DWORD saclSize;
DWORD ownerSIDSize;
DWORD groupSIDSize;
PACL dacl = NULL;
PACL sacl = NULL;
PSID ownerSID = NULL;
PSID groupSID = NULL;
BOOL present;
BOOL systemDefault;
//
// Get SACL
//
if (!GetSecurityDescriptorSacl (OldSD, &present, &sacl, &systemDefault))
return GetLastError();
if (sacl && present)
{
saclSize = sacl->AclSize;
} else saclSize = 0;
//
// Get DACL
//
if (!GetSecurityDescriptorDacl (OldSD, &present, &dacl, &systemDefault))
return GetLastError();
if (dacl && present)
{
daclSize = dacl->AclSize;
} else daclSize = 0;
//
// Get Owner
//
if (!GetSecurityDescriptorOwner (OldSD, &ownerSID, &systemDefault))
return GetLastError();
ownerSIDSize = GetLengthSid (ownerSID);
//
// Get Group
//
if (!GetSecurityDescriptorGroup (OldSD, &groupSID, &systemDefault))
return GetLastError();
groupSIDSize = GetLengthSid (groupSID);
//
// Do the conversion
//
descriptorSize = 0;
MakeAbsoluteSD (OldSD, sd, &descriptorSize, dacl, &daclSize, sacl,
&saclSize, ownerSID, &ownerSIDSize, groupSID,
&groupSIDSize);
sd = (PSECURITY_DESCRIPTOR) new BYTE [SECURITY_DESCRIPTOR_MIN_LENGTH];
if (!InitializeSecurityDescriptor (sd, SECURITY_DESCRIPTOR_REVISION))
return GetLastError();
if (!MakeAbsoluteSD (OldSD, sd, &descriptorSize, dacl, &daclSize, sacl,
&saclSize, ownerSID, &ownerSIDSize, groupSID,
&groupSIDSize))
return GetLastError();
*NewSD = sd;
return ERROR_SUCCESS;
}
DWORD
SetNamedValueSD (
HKEY RootKey,
LPTSTR KeyName,
LPTSTR ValueName,
SECURITY_DESCRIPTOR *SD
)
{
DWORD returnValue;
DWORD disposition;
HKEY registryKey;
//
// Create new key or open existing key
//
returnValue = RegCreateKeyEx (RootKey, KeyName, 0, _T(""), 0, KEY_ALL_ACCESS, NULL, &registryKey, &disposition);
if (returnValue != ERROR_SUCCESS)
return returnValue;
//
// Write the security descriptor
//
returnValue = RegSetValueEx (registryKey, ValueName, 0, REG_BINARY, (LPBYTE) SD, GetSecurityDescriptorLength (SD));
if (returnValue != ERROR_SUCCESS)
return returnValue;
RegCloseKey (registryKey);
return ERROR_SUCCESS;
}
DWORD
GetNamedValueSD (
HKEY RootKey,
LPTSTR KeyName,
LPTSTR ValueName,
SECURITY_DESCRIPTOR **SD,
BOOL *NewSD
)
{
DWORD returnValue;
HKEY registryKey;
DWORD valueType;
DWORD valueSize;
*NewSD = FALSE;
//
// Get the security descriptor from the named value. If it doesn't
// exist, create a fresh one.
//
returnValue = RegOpenKeyEx (RootKey, KeyName, 0, KEY_ALL_ACCESS, &registryKey);
if (returnValue != ERROR_SUCCESS)
{
if (returnValue == ERROR_FILE_NOT_FOUND)
{
*SD = NULL;
returnValue = CreateNewSD (SD);
if (returnValue != ERROR_SUCCESS) {
if (*SD)
free(*SD);
return returnValue;
}
*NewSD = TRUE;
return ERROR_SUCCESS;
} else
return returnValue;
}
returnValue = RegQueryValueEx (registryKey, ValueName, NULL, &valueType, NULL, &valueSize);
if (returnValue && returnValue != ERROR_INSUFFICIENT_BUFFER)
{
*SD = NULL;
returnValue = CreateNewSD (SD);
if (returnValue != ERROR_SUCCESS) {
if (*SD)
free(*SD);
return returnValue;
}
*NewSD = TRUE;
} else
{
*SD = (SECURITY_DESCRIPTOR *) malloc (valueSize);
returnValue = RegQueryValueEx (registryKey, ValueName, NULL, &valueType, (LPBYTE) *SD, &valueSize);
if (returnValue)
{
if (*SD)
free (*SD);
*SD = NULL;
returnValue = CreateNewSD (SD);
if (returnValue != ERROR_SUCCESS) {
if (*SD)
free(*SD);
return returnValue;
}
*NewSD = TRUE;
}
}
RegCloseKey (registryKey);
return ERROR_SUCCESS;
}
DWORD
AddPrincipalToNamedValueSD (
HKEY RootKey,
LPTSTR KeyName,
LPTSTR ValueName,
LPTSTR Principal,
BOOL Permit
)
{
DWORD returnValue = ERROR_SUCCESS;
SECURITY_DESCRIPTOR *sd = NULL;
SECURITY_DESCRIPTOR *sdSelfRelative = NULL;
SECURITY_DESCRIPTOR *sdAbsolute = NULL;
DWORD secDescSize;
BOOL present;
BOOL defaultDACL;
PACL dacl;
BOOL newSD = FALSE;
BOOL fFreeAbsolute = TRUE;
returnValue = GetNamedValueSD (RootKey, KeyName, ValueName, &sd, &newSD);
//
// Get security descriptor from registry or create a new one
//
if (returnValue != ERROR_SUCCESS)
return returnValue;
if (!GetSecurityDescriptorDacl (sd, &present, &dacl, &defaultDACL)) {
returnValue = GetLastError();
goto Cleanup;
}
if (newSD)
{
AddAccessAllowedACEToACL (&dacl, COM_RIGHTS_EXECUTE, _T("system"));
#if 0
AddAccessAllowedACEToACL (&dacl, COM_RIGHTS_EXECUTE, _T("INTERACTIVE"));
#endif
}
//
// Add the Principal that the caller wants added
//
if (Permit)
returnValue = AddAccessAllowedACEToACL (&dacl, COM_RIGHTS_EXECUTE, Principal);
else
returnValue = AddAccessDeniedACEToACL (&dacl, GENERIC_ALL, Principal);
if (returnValue != ERROR_SUCCESS)
goto Cleanup;
//
// Make the security descriptor absolute if it isn't new
//
if (!newSD) {
MakeSDAbsolute ((PSECURITY_DESCRIPTOR) sd, (PSECURITY_DESCRIPTOR *) &sdAbsolute);
fFreeAbsolute = TRUE;
} else {
sdAbsolute = sd;
fFreeAbsolute = FALSE;
}
//
// Set the discretionary ACL on the security descriptor
//
if (!SetSecurityDescriptorDacl (sdAbsolute, TRUE, dacl, FALSE)) {
returnValue = GetLastError();
goto Cleanup;
}
//
// Make the security descriptor self-relative so that we can
// store it in the registry
//
secDescSize = 0;
MakeSelfRelativeSD (sdAbsolute, sdSelfRelative, &secDescSize);
sdSelfRelative = (SECURITY_DESCRIPTOR *) malloc (secDescSize);
if (!MakeSelfRelativeSD (sdAbsolute, sdSelfRelative, &secDescSize)) {
returnValue = GetLastError();
goto Cleanup;
}
//
// Store the security descriptor in the registry
//
SetNamedValueSD (RootKey, KeyName, ValueName, sdSelfRelative);
Cleanup:
if (sd)
free (sd);
if (sdSelfRelative)
free (sdSelfRelative);
if (fFreeAbsolute && sdAbsolute)
free (sdAbsolute);
return returnValue;
}
DWORD
RemovePrincipalFromNamedValueSD (
HKEY RootKey,
LPTSTR KeyName,
LPTSTR ValueName,
LPTSTR Principal
)
{
DWORD returnValue = ERROR_SUCCESS;
SECURITY_DESCRIPTOR *sd = NULL;
SECURITY_DESCRIPTOR *sdSelfRelative = NULL;
SECURITY_DESCRIPTOR *sdAbsolute = NULL;
DWORD secDescSize;
BOOL present;
BOOL defaultDACL;
PACL dacl = NULL;
BOOL newSD = FALSE;
BOOL fFreeAbsolute = TRUE;
returnValue = GetNamedValueSD (RootKey, KeyName, ValueName, &sd, &newSD);
//
// Get security descriptor from registry or create a new one
//
if (returnValue != ERROR_SUCCESS)
return returnValue;
if (!GetSecurityDescriptorDacl (sd, &present, &dacl, &defaultDACL)) {
returnValue = GetLastError();
goto Cleanup;
}
//
// If the security descriptor is new, add the required Principals to it
//
if (newSD)
{
AddAccessAllowedACEToACL (&dacl, COM_RIGHTS_EXECUTE, _T("system"));
#if 0
AddAccessAllowedACEToACL (&dacl, COM_RIGHTS_EXECUTE, _T("INTERACTIVE"));
#endif
}
//
// Remove the Principal that the caller wants removed
//
returnValue = RemovePrincipalFromACL (dacl, Principal);
if (returnValue != ERROR_SUCCESS)
goto Cleanup;
//
// Make the security descriptor absolute if it isn't new
//
if (!newSD) {
MakeSDAbsolute ((PSECURITY_DESCRIPTOR) sd, (PSECURITY_DESCRIPTOR *) &sdAbsolute);
fFreeAbsolute = TRUE;
} else {
sdAbsolute = sd;
fFreeAbsolute = FALSE;
}
//
// Set the discretionary ACL on the security descriptor
//
if (!SetSecurityDescriptorDacl (sdAbsolute, TRUE, dacl, FALSE)) {
returnValue = GetLastError();
goto Cleanup;
}
//
// Make the security descriptor self-relative so that we can
// store it in the registry
//
secDescSize = 0;
MakeSelfRelativeSD (sdAbsolute, sdSelfRelative, &secDescSize);
sdSelfRelative = (SECURITY_DESCRIPTOR *) malloc (secDescSize);
if (!MakeSelfRelativeSD (sdAbsolute, sdSelfRelative, &secDescSize)) {
returnValue = GetLastError();
goto Cleanup;
}
//
// Store the security descriptor in the registry
//
SetNamedValueSD (RootKey, KeyName, ValueName, sdSelfRelative);
Cleanup:
if (sd)
free (sd);
if (sdSelfRelative)
free (sdSelfRelative);
if (fFreeAbsolute && sdAbsolute)
free (sdAbsolute);
return returnValue;
}
DWORD
ChangeAppIDAccessACL (
LPTSTR AppID,
LPTSTR Principal,
BOOL SetPrincipal,
BOOL Permit
)
{
TCHAR keyName [256];
DWORD err;
if (AppID [0] == _T('{'))
_stprintf (keyName, _T("APPID\\%s"), AppID);
else
_stprintf (keyName, _T("APPID\\{%s}"), AppID);
if (SetPrincipal)
{
err = RemovePrincipalFromNamedValueSD (HKEY_CLASSES_ROOT, keyName, _T("AccessPermission"), Principal);
err = AddPrincipalToNamedValueSD (HKEY_CLASSES_ROOT, keyName, _T("AccessPermission"), Principal, Permit);
} else
err = RemovePrincipalFromNamedValueSD (HKEY_CLASSES_ROOT, keyName, _T("AccessPermission"), Principal);
return err;
}
DWORD
ChangeAppIDLaunchACL (
LPTSTR AppID,
LPTSTR Principal,
BOOL SetPrincipal,
BOOL Permit
)
{
TCHAR keyName [256];
DWORD err;
if (AppID [0] == _T('{'))
_stprintf (keyName, _T("APPID\\%s"), AppID);
else
_stprintf (keyName, _T("APPID\\{%s}"), AppID);
if (SetPrincipal)
{
err = RemovePrincipalFromNamedValueSD (HKEY_CLASSES_ROOT, keyName, _T("LaunchPermission"), Principal);
err = AddPrincipalToNamedValueSD (HKEY_CLASSES_ROOT, keyName, _T("LaunchPermission"), Principal, Permit);
} else
err = RemovePrincipalFromNamedValueSD (HKEY_CLASSES_ROOT, keyName, _T("LaunchPermission"), Principal);
return err;
}
DWORD
ChangeDCOMAccessACL (
LPTSTR Principal,
BOOL SetPrincipal,
BOOL Permit
)
{
TCHAR keyName [256] = _T("Software\\Microsoft\\OLE");
DWORD err;
if (SetPrincipal)
{
err = RemovePrincipalFromNamedValueSD (HKEY_LOCAL_MACHINE, keyName, _T("DefaultAccessPermission"), Principal);
err = AddPrincipalToNamedValueSD (HKEY_LOCAL_MACHINE, keyName, _T("DefaultAccessPermission"), Principal, Permit);
} else
err = RemovePrincipalFromNamedValueSD (HKEY_LOCAL_MACHINE, keyName, _T("DefaultAccessPermission"), Principal);
return err;
}
DWORD
ChangeDCOMLaunchACL (
LPTSTR Principal,
BOOL SetPrincipal,
BOOL Permit
)
{
TCHAR keyName [256] = _T("Software\\Microsoft\\OLE");
DWORD err;
if (SetPrincipal)
{
err = RemovePrincipalFromNamedValueSD (HKEY_LOCAL_MACHINE, keyName, _T("DefaultLaunchPermission"), Principal);
err = AddPrincipalToNamedValueSD (HKEY_LOCAL_MACHINE, keyName, _T("DefaultLaunchPermission"), Principal, Permit);
} else
err = RemovePrincipalFromNamedValueSD (HKEY_LOCAL_MACHINE, keyName, _T("DefaultLaunchPermission"), Principal);
return err;
}