2598 lines
63 KiB
C++
2598 lines
63 KiB
C++
/*++ BUILD Version: 0000 // Increment this if a change has global effects
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Copyright (c) 2000 - 2002 Microsoft Corporation
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Module Name:
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dspub.cpp
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Abstract:
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Src module for tapi server DS publishing
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Author:
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Xiaohai Zhang (xzhang) 10-March-2000
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Revision History:
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--*/
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#include "windows.h"
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#include "objbase.h"
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#include "winbase.h"
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#include "sddl.h"
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#include "iads.h"
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#include "activeds.h"
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#include "tapi.h"
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#include "tspi.h"
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#include "utils.h"
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#include "client.h"
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#include "server.h"
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#include "private.h"
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#include "tchar.h"
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#define SECURITY_WIN32
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#include "sspi.h"
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#include "secext.h"
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#include "psapi.h"
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extern "C" {
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extern const TCHAR gszRegKeyTelephony[];
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extern DWORD gdwTapiSCPTTL;
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extern const TCHAR gszRegTapisrvSCPGuid[];
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extern CRITICAL_SECTION gSCPCritSec;
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}
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const TCHAR gszTapisrvBindingInfo[] = TEXT("E{\\pipe\\tapsrv}P{ncacn_np}C{%s}A{%s}S{%s}TTL{%s}");
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const TCHAR gszVenderMS[] = TEXT("Microsoft");
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const TCHAR gszMSGuid[] = TEXT("937924B8-AA44-11d2-81F1-00C04FB9624E");
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const WCHAR gwszTapisrvRDN[] = L"CN=Telephony Service";
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const TCHAR gszTapisrvProdName[] = TEXT("Telephony Service");
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// gszTapisrvGuid needs to be consistant with remotesp\dslookup.cpp
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const TCHAR gszTapisrvGuid[] = TEXT("B1A37774-E3F7-488E-ADBFD4DB8A4AB2E5");
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const TCHAR gwszProxyRDN[] = L"cn=TAPI Proxy Server";
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const TCHAR gszProxyProdName[] = TEXT("TAPI Proxy Server");
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const TCHAR gszProxyGuid[] = TEXT("A2657445-3E27-400B-851A-456C41666E37");
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const TCHAR gszRegProxySCPGuid[] = TEXT("PROXYSCPGUID");
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typedef struct _PROXY_SCP_ENTRY {
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// A valid CLSID requires 38 chars
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TCHAR szClsid[40];
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// A binding GUID is of format
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// LDAP://<GUID={B1A37774-E3F7-488E-ADBFD4DB8A4AB2E5}>
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// required size is 38+14=52 chars
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TCHAR szObjGuid[56];
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// Ref count for this entry
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DWORD dwRefCount;
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} PROXY_SCP_ENTRY, *PPROXY_SCP_ENTRY;
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typedef struct _PROXY_SCPS {
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DWORD dwTotalEntries;
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DWORD dwUsedEntries;
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PROXY_SCP_ENTRY * aEntries;
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} PROXY_SCPS, *PPROXY_SCPS;
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PROXY_SCPS gProxyScps;
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#define MAX_SD 2048
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//
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// GetTokenUser
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//
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// Based on hAccessToken, call GetTokenInformation
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// to retrieve TokenUser info
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//
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HRESULT
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GetTokenUser (HANDLE hAccessToken, PTOKEN_USER * ppUser)
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{
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HRESULT hr = S_OK;
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DWORD dwInfoSize = 0;
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PTOKEN_USER ptuUser = NULL;
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DWORD ntsResult;
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if (!GetTokenInformation(
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hAccessToken,
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TokenUser,
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NULL,
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0,
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&dwInfoSize
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))
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{
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ntsResult = GetLastError();
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if (ntsResult != ERROR_INSUFFICIENT_BUFFER)
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{
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hr = HRESULT_FROM_WIN32 (ntsResult);
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goto ExitHere;
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}
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}
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ptuUser = (PTOKEN_USER) ServerAlloc (dwInfoSize);
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if (ptuUser == NULL)
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{
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hr = LINEERR_NOMEM;
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goto ExitHere;
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}
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if (!GetTokenInformation(
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hAccessToken,
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TokenUser,
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ptuUser,
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dwInfoSize,
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&dwInfoSize
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))
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{
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ServerFree (ptuUser);
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hr = HRESULT_FROM_WIN32 (GetLastError());
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goto ExitHere;
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}
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*ppUser = ptuUser;
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ExitHere:
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return hr;
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}
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//
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// IsLocalSystem
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//
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// This function makes the determination if the given process token
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// is running as LocalSystem or LocalService or NetworkService
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// Returns S_OK if it is, S_FALSE if it is not LocalSystem.
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//
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HRESULT
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IsLocalSystem(HANDLE hAccessToken)
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{
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HRESULT hr = S_OK;
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SID_IDENTIFIER_AUTHORITY NtAuthority = SECURITY_NT_AUTHORITY;
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PSID pLocalSid = NULL;
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PSID pLocalServiceSid = NULL;
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PSID pNetworkServiceSid = NULL;
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PTOKEN_USER ptuUser = NULL;
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hr = GetTokenUser (hAccessToken, &ptuUser);
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if (FAILED(hr))
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{
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goto ExitHere;
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}
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if (!AllocateAndInitializeSid (
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&NtAuthority,
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1,
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SECURITY_LOCAL_SYSTEM_RID,
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0, 0, 0, 0, 0, 0, 0,
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&pLocalSid) ||
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!AllocateAndInitializeSid (
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&NtAuthority,
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1,
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SECURITY_LOCAL_SERVICE_RID,
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0, 0, 0, 0, 0, 0, 0,
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&pLocalServiceSid) ||
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!AllocateAndInitializeSid (
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&NtAuthority,
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1,
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SECURITY_NETWORK_SERVICE_RID,
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0, 0, 0, 0, 0, 0, 0,
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&pNetworkServiceSid)
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)
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{
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hr = HRESULT_FROM_WIN32(GetLastError());
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goto ExitHere;
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}
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if (!EqualSid(pLocalSid, ptuUser->User.Sid) &&
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!EqualSid(pLocalServiceSid, ptuUser->User.Sid) &&
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!EqualSid(pNetworkServiceSid, ptuUser->User.Sid))
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{
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hr = S_FALSE;
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}
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ExitHere:
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if (NULL != ptuUser)
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{
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ServerFree (ptuUser);
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}
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if (NULL != pLocalSid)
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{
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FreeSid(pLocalSid);
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}
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if (NULL != pLocalServiceSid)
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{
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FreeSid (pLocalServiceSid);
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}
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if (NULL != pNetworkServiceSid)
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{
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FreeSid (pNetworkServiceSid);
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}
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return hr;
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}
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//
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// IsCurrentLocalSystem
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//
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// IsCurrentLocalSystem checks to see if current thread/process
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// runs in LocalSystem account
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//
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HRESULT
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IsCurrentLocalSystem ()
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{
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HRESULT hr = S_OK;
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HANDLE hToken = NULL;
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if (!OpenThreadToken(
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GetCurrentThread(),
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TOKEN_QUERY,
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FALSE,
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&hToken))
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{
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if(!OpenProcessToken(
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GetCurrentProcess(),
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TOKEN_QUERY,
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&hToken
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))
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{
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hr = HRESULT_FROM_WIN32(GetLastError());
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goto ExitHere;
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}
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}
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hr = IsLocalSystem (hToken);
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CloseHandle (hToken);
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ExitHere:
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return hr;
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}
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HRESULT
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SetPrivilege(
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HANDLE hToken, // token handle
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LPCTSTR Privilege, // Privilege to enable/disable
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BOOL bEnablePrivilege // to enable or disable privilege
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)
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{
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HRESULT hr = S_OK;
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TOKEN_PRIVILEGES tp;
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LUID luid;
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TOKEN_PRIVILEGES tpPrevious;
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DWORD cbPrevious=sizeof(TOKEN_PRIVILEGES);
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DWORD dwErr;
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if(!LookupPrivilegeValue( NULL, Privilege, &luid ))
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{
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hr = HRESULT_FROM_WIN32 (GetLastError ());
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goto ExitHere;
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}
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//
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// first pass. get current privilege setting
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//
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tp.PrivilegeCount = 1;
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tp.Privileges[0].Luid = luid;
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tp.Privileges[0].Attributes = 0;
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AdjustTokenPrivileges(
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hToken,
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FALSE,
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&tp,
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sizeof(TOKEN_PRIVILEGES),
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&tpPrevious,
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&cbPrevious
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);
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dwErr = GetLastError ();
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if (dwErr != ERROR_SUCCESS)
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{
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hr = HRESULT_FROM_WIN32 (dwErr);
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goto ExitHere;
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}
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//
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// second pass. set privilege based on previous setting
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//
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tpPrevious.PrivilegeCount = 1;
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tpPrevious.Privileges[0].Luid = luid;
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if(bEnablePrivilege)
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{
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tpPrevious.Privileges[0].Attributes |= (SE_PRIVILEGE_ENABLED);
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}
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else
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{
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tpPrevious.Privileges[0].Attributes ^= (SE_PRIVILEGE_ENABLED &
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tpPrevious.Privileges[0].Attributes);
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}
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AdjustTokenPrivileges(
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hToken,
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FALSE,
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&tpPrevious,
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cbPrevious,
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NULL,
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NULL
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);
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dwErr = GetLastError ();
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if (dwErr != ERROR_SUCCESS)
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{
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hr = HRESULT_FROM_WIN32 (dwErr);
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goto ExitHere;
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}
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ExitHere:
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return hr;
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}
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HRESULT
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SetCurrentPrivilege (
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LPCTSTR Privilege, // Privilege to enable/disable
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BOOL bEnablePrivilege // to enable or disable privilege
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)
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{
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HRESULT hr = S_OK;
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HANDLE hToken = NULL;
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if (!OpenThreadToken(
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GetCurrentThread(),
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TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES,
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FALSE,
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&hToken))
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{
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if(!OpenProcessToken(
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GetCurrentProcess(),
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TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES,
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&hToken
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))
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{
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hr = HRESULT_FROM_WIN32(GetLastError());
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goto ExitHere;
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}
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}
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hr = SetPrivilege(hToken, Privilege, bEnablePrivilege);
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ExitHere:
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if (hToken)
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{
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CloseHandle(hToken);
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}
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return hr;
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}
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//
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// SetSidOnAcl
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//
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BOOL
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SetSidOnAcl(
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PSID pSid,
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PACL pAclSource,
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PACL *pAclDestination,
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DWORD AccessMask,
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BYTE AceFlags,
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BOOL bAddSid
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)
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{
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HRESULT hr = S_OK;
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ACL_SIZE_INFORMATION AclInfo;
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DWORD dwNewAclSize, dwErr;
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LPVOID pAce;
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DWORD AceCounter;
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//
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// If we were given a NULL Acl, just provide a NULL Acl
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//
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*pAclDestination = NULL;
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if(pAclSource == NULL || !IsValidSid(pSid))
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{
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hr = E_INVALIDARG;
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goto ExitHere;
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}
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if(!GetAclInformation(
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pAclSource,
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&AclInfo,
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sizeof(ACL_SIZE_INFORMATION),
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AclSizeInformation
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))
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{
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hr = HRESULT_FROM_WIN32 (GetLastError ());
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goto ExitHere;
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}
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|
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//
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// compute size for new Acl, based on addition or subtraction of Ace
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//
|
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if(bAddSid)
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{
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dwNewAclSize=AclInfo.AclBytesInUse +
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sizeof(ACCESS_ALLOWED_ACE) +
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GetLengthSid(pSid) -
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sizeof(DWORD) ;
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}
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else
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{
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dwNewAclSize=AclInfo.AclBytesInUse -
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sizeof(ACCESS_ALLOWED_ACE) -
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GetLengthSid(pSid) +
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sizeof(DWORD) ;
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}
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|
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*pAclDestination = (PACL)ServerAlloc(dwNewAclSize);
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|
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if(*pAclDestination == NULL) {
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hr = LINEERR_NOMEM;
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goto ExitHere;
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}
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|
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//
|
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// initialize new Acl
|
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//
|
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if(!InitializeAcl(
|
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*pAclDestination,
|
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dwNewAclSize,
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ACL_REVISION
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))
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{
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hr = HRESULT_FROM_WIN32 (GetLastError ());
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goto ExitHere;
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}
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|
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//
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// if appropriate, add ace representing pSid
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//
|
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if(bAddSid)
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{
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PACCESS_ALLOWED_ACE pNewAce;
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|
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if(!AddAccessAllowedAce(
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*pAclDestination,
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ACL_REVISION,
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AccessMask,
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pSid
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|
))
|
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{
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hr = HRESULT_FROM_WIN32 (GetLastError ());
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goto ExitHere;
|
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}
|
|
|
|
//
|
|
// get pointer to ace we just added, so we can change the AceFlags
|
|
//
|
|
if(!GetAce(
|
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*pAclDestination,
|
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0, // this is the first ace in the Acl
|
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(void**) &pNewAce
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|
))
|
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{
|
|
hr = HRESULT_FROM_WIN32 (GetLastError ());
|
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goto ExitHere;
|
|
}
|
|
|
|
pNewAce->Header.AceFlags = AceFlags;
|
|
}
|
|
|
|
//
|
|
// copy existing aces to new Acl
|
|
//
|
|
for(AceCounter = 0 ; AceCounter < AclInfo.AceCount ; AceCounter++) {
|
|
//
|
|
// fetch existing ace
|
|
//
|
|
if(!GetAce(pAclSource, AceCounter, &pAce))
|
|
{
|
|
hr = HRESULT_FROM_WIN32 (GetLastError ());
|
|
goto ExitHere;
|
|
}
|
|
//
|
|
// check to see if we are removing the Ace
|
|
//
|
|
if(!bAddSid) {
|
|
//
|
|
// we only care about ACCESS_ALLOWED aces
|
|
//
|
|
if((((PACE_HEADER)pAce)->AceType) == ACCESS_ALLOWED_ACE_TYPE)
|
|
{
|
|
PSID pTempSid=(PSID)&((PACCESS_ALLOWED_ACE)pAce)->SidStart;
|
|
//
|
|
// if the Sid matches, skip adding this Sid
|
|
//
|
|
if(EqualSid(pSid, pTempSid))
|
|
{
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
// append ace to Acl
|
|
//
|
|
if(!AddAce(
|
|
*pAclDestination,
|
|
ACL_REVISION,
|
|
MAXDWORD, // maintain Ace order
|
|
pAce,
|
|
((PACE_HEADER)pAce)->AceSize
|
|
))
|
|
{
|
|
hr = HRESULT_FROM_WIN32 (GetLastError ());
|
|
goto ExitHere;
|
|
}
|
|
}
|
|
|
|
ExitHere:
|
|
|
|
//
|
|
// free memory if an error occurred
|
|
//
|
|
if(hr) {
|
|
if(*pAclDestination != NULL)
|
|
{
|
|
ServerFree(*pAclDestination);
|
|
}
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
//
|
|
// AddSIDToKernelObject()
|
|
//
|
|
// This function takes a given SID and dwAccess and adds it to a given token.
|
|
//
|
|
// ** Be sure to restore old kernel object
|
|
// ** using call to GetKernelObjectSecurity()
|
|
//
|
|
HRESULT
|
|
AddSIDToKernelObjectDacl(
|
|
PSID pSid,
|
|
DWORD dwAccess,
|
|
HANDLE OriginalToken,
|
|
PSECURITY_DESCRIPTOR* ppSDOld)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
PSECURITY_DESCRIPTOR pSD = NULL;
|
|
SECURITY_DESCRIPTOR sdNew;
|
|
DWORD cbByte = MAX_SD, cbNeeded = 0, dwErr = 0;
|
|
PACL pOldDacl = NULL, pNewDacl = NULL;
|
|
BOOL fDaclPresent, fDaclDefaulted, fRet = FALSE;
|
|
|
|
pSD = (PSECURITY_DESCRIPTOR) ServerAlloc(cbByte);
|
|
if (NULL == pSD)
|
|
{
|
|
hr = LINEERR_NOMEM;
|
|
goto ExitHere;
|
|
}
|
|
|
|
if (!InitializeSecurityDescriptor(
|
|
&sdNew,
|
|
SECURITY_DESCRIPTOR_REVISION
|
|
))
|
|
{
|
|
hr = HRESULT_FROM_WIN32 (GetLastError());
|
|
goto ExitHere;
|
|
}
|
|
|
|
if (!GetKernelObjectSecurity(
|
|
OriginalToken,
|
|
DACL_SECURITY_INFORMATION,
|
|
pSD,
|
|
cbByte,
|
|
&cbNeeded
|
|
))
|
|
{
|
|
dwErr = GetLastError();
|
|
if (cbNeeded > MAX_SD && dwErr == ERROR_MORE_DATA)
|
|
{
|
|
ServerFree(pSD);
|
|
pSD = (PSECURITY_DESCRIPTOR) ServerAlloc(cbNeeded);
|
|
if (NULL == pSD)
|
|
{
|
|
hr = LINEERR_NOMEM;
|
|
goto ExitHere;
|
|
}
|
|
if (!GetKernelObjectSecurity(
|
|
OriginalToken,
|
|
DACL_SECURITY_INFORMATION,
|
|
pSD,
|
|
cbNeeded,
|
|
&cbNeeded
|
|
))
|
|
{
|
|
hr = HRESULT_FROM_WIN32 (GetLastError());
|
|
goto ExitHere;
|
|
}
|
|
dwErr = 0;
|
|
}
|
|
|
|
if (dwErr != 0)
|
|
{
|
|
hr = HRESULT_FROM_WIN32 (dwErr);
|
|
goto ExitHere;
|
|
}
|
|
}
|
|
|
|
if (!GetSecurityDescriptorDacl(
|
|
pSD,
|
|
&fDaclPresent,
|
|
&pOldDacl,
|
|
&fDaclDefaulted
|
|
))
|
|
{
|
|
hr = HRESULT_FROM_WIN32 (GetLastError());
|
|
goto ExitHere;
|
|
}
|
|
|
|
hr = SetSidOnAcl(
|
|
pSid,
|
|
pOldDacl,
|
|
&pNewDacl,
|
|
dwAccess,
|
|
0,
|
|
TRUE
|
|
);
|
|
if (hr)
|
|
{
|
|
goto ExitHere;
|
|
}
|
|
|
|
if (!SetSecurityDescriptorDacl(
|
|
&sdNew,
|
|
TRUE,
|
|
pNewDacl,
|
|
FALSE
|
|
))
|
|
{
|
|
hr = HRESULT_FROM_WIN32 (GetLastError());
|
|
goto ExitHere;
|
|
}
|
|
|
|
if (!SetKernelObjectSecurity(
|
|
OriginalToken,
|
|
DACL_SECURITY_INFORMATION,
|
|
&sdNew
|
|
))
|
|
{
|
|
hr = HRESULT_FROM_WIN32 (GetLastError());
|
|
goto ExitHere;
|
|
}
|
|
|
|
*ppSDOld = pSD;
|
|
|
|
ExitHere:
|
|
|
|
if (NULL != pNewDacl)
|
|
{
|
|
ServerFree(pNewDacl);
|
|
}
|
|
|
|
if (hr)
|
|
{
|
|
if (NULL != pSD)
|
|
{
|
|
ServerFree(pSD);
|
|
*ppSDOld = NULL;
|
|
}
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
//
|
|
// SetTokenDefaultDacl
|
|
//
|
|
// This function makes pSidUser and LocalSystem account
|
|
// have full access in the default DACL of the access token
|
|
// this is necessary for CreateThread to succeed without
|
|
// an assert in checked build
|
|
//
|
|
|
|
HRESULT
|
|
SetTokenDefaultDacl(HANDLE hAccessToken, PSID pSidUser)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
SID_IDENTIFIER_AUTHORITY IDAuthorityNT = SECURITY_NT_AUTHORITY;
|
|
PSID pLocalSid = NULL;
|
|
TOKEN_DEFAULT_DACL defDACL = {0};
|
|
DWORD cbDACL;
|
|
|
|
if (!AllocateAndInitializeSid(
|
|
&IDAuthorityNT,
|
|
1,
|
|
SECURITY_LOCAL_SYSTEM_RID,
|
|
0,0,0,0,0,0,0,
|
|
&pLocalSid
|
|
))
|
|
{
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
goto ExitHere;
|
|
}
|
|
|
|
cbDACL = sizeof(ACL) +
|
|
sizeof(ACCESS_ALLOWED_ACE) + GetLengthSid (pLocalSid) +
|
|
sizeof(ACCESS_ALLOWED_ACE) + GetLengthSid (pSidUser);
|
|
defDACL.DefaultDacl = (PACL) ServerAlloc (cbDACL);
|
|
if (defDACL.DefaultDacl == NULL)
|
|
{
|
|
hr = LINEERR_NOMEM;
|
|
goto ExitHere;
|
|
}
|
|
if (!InitializeAcl (
|
|
defDACL.DefaultDacl,
|
|
cbDACL,
|
|
ACL_REVISION
|
|
))
|
|
{
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
goto ExitHere;
|
|
}
|
|
if (!AddAccessAllowedAce (
|
|
defDACL.DefaultDacl,
|
|
ACL_REVISION,
|
|
GENERIC_ALL,
|
|
pLocalSid
|
|
) ||
|
|
!AddAccessAllowedAce (
|
|
defDACL.DefaultDacl,
|
|
ACL_REVISION,
|
|
GENERIC_ALL,
|
|
pSidUser
|
|
))
|
|
{
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
goto ExitHere;
|
|
}
|
|
if (!SetTokenInformation (
|
|
hAccessToken,
|
|
TokenDefaultDacl,
|
|
&defDACL,
|
|
sizeof(TOKEN_DEFAULT_DACL)
|
|
))
|
|
{
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
goto ExitHere;
|
|
}
|
|
|
|
ExitHere:
|
|
|
|
if (NULL != pLocalSid)
|
|
{
|
|
FreeSid(pLocalSid);
|
|
}
|
|
|
|
if (defDACL.DefaultDacl != NULL)
|
|
{
|
|
ServerFree (defDACL.DefaultDacl);
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
//
|
|
// GetLocalSystemToken
|
|
//
|
|
// This function grabs a process token from a LocalSystem process and uses it
|
|
// to impersonate when ncessary
|
|
//
|
|
|
|
HRESULT
|
|
GetLocalSystemToken(HANDLE* phRet)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
|
|
DWORD rgDefPIDs[128];
|
|
DWORD * rgPIDs = rgDefPIDs;
|
|
DWORD cbPIDs = sizeof(rgDefPIDs), cbNeeded;
|
|
|
|
DWORD i;
|
|
HANDLE hProcess = NULL;
|
|
HANDLE hPToken = NULL, hPDupToken = NULL, hPTokenNew = NULL;
|
|
HANDLE hToken;
|
|
|
|
PTOKEN_USER ptuUser = NULL;
|
|
BOOL fSet = FALSE;
|
|
PSECURITY_DESCRIPTOR pSD = NULL;
|
|
|
|
//
|
|
// Set up necessary privilege for follow-on security operation
|
|
//
|
|
if(hr = SetCurrentPrivilege(SE_DEBUG_NAME, TRUE))
|
|
{
|
|
goto ExitHere;
|
|
}
|
|
if(hr = SetCurrentPrivilege(SE_TAKE_OWNERSHIP_NAME, TRUE))
|
|
{
|
|
goto ExitHere;
|
|
}
|
|
|
|
//
|
|
// Get the current thread/process token user info
|
|
//
|
|
if (!OpenThreadToken(
|
|
GetCurrentThread(),
|
|
TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES,
|
|
FALSE,
|
|
&hToken))
|
|
{
|
|
if(!OpenProcessToken(
|
|
GetCurrentProcess(),
|
|
TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES,
|
|
&hToken
|
|
))
|
|
{
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
goto ExitHere;
|
|
}
|
|
}
|
|
hr = GetTokenUser (hToken, &ptuUser);
|
|
CloseHandle (hToken);
|
|
if (hr)
|
|
{
|
|
goto ExitHere;
|
|
}
|
|
|
|
//
|
|
// Get the list of process IDs in the system
|
|
//
|
|
while (1)
|
|
{
|
|
if (!EnumProcesses (
|
|
rgPIDs,
|
|
cbPIDs,
|
|
&cbNeeded
|
|
))
|
|
{
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
goto ExitHere;
|
|
}
|
|
// Break out if we have large enough buf
|
|
if (cbNeeded < cbPIDs)
|
|
{
|
|
break;
|
|
}
|
|
// Otherwise, alloc larger buffer
|
|
if (rgPIDs != rgDefPIDs)
|
|
{
|
|
ServerFree (rgPIDs);
|
|
}
|
|
cbPIDs += 256;
|
|
rgPIDs = (DWORD *)ServerAlloc (cbPIDs);
|
|
if (rgPIDs == NULL)
|
|
{
|
|
hr = LINEERR_NOMEM;
|
|
goto ExitHere;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Walk processes until we find one that's running as
|
|
// local system
|
|
//
|
|
for (i = 1; i < (cbNeeded / sizeof(DWORD)); i++)
|
|
{
|
|
hProcess = OpenProcess(
|
|
PROCESS_ALL_ACCESS,
|
|
FALSE,
|
|
rgPIDs[i]
|
|
);
|
|
if (NULL == hProcess)
|
|
{
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
goto ExitHere;
|
|
}
|
|
if (!OpenProcessToken(
|
|
hProcess,
|
|
READ_CONTROL | WRITE_DAC,
|
|
&hPToken
|
|
))
|
|
{
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
goto ExitHere;
|
|
}
|
|
|
|
//
|
|
// We have got the process token, but in general
|
|
// we do not have TOKEN_DUPLICATE access. So we
|
|
// go ahead and whack the DACL of the object to
|
|
// grant us the access right.
|
|
// IMPORTANT: need to restore the original SD
|
|
//
|
|
if (hr = AddSIDToKernelObjectDacl(
|
|
ptuUser->User.Sid,
|
|
TOKEN_DUPLICATE,
|
|
hPToken,
|
|
&pSD
|
|
))
|
|
{
|
|
goto ExitHere;
|
|
}
|
|
|
|
fSet = TRUE;
|
|
|
|
if (!OpenProcessToken(
|
|
hProcess,
|
|
TOKEN_DUPLICATE,
|
|
&hPTokenNew
|
|
))
|
|
{
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
goto ExitHere;
|
|
}
|
|
|
|
//
|
|
// Duplicate the token
|
|
//
|
|
if (!DuplicateTokenEx(
|
|
hPTokenNew,
|
|
TOKEN_ALL_ACCESS,
|
|
NULL,
|
|
SecurityImpersonation,
|
|
TokenPrimary,
|
|
&hPDupToken
|
|
))
|
|
{
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
goto ExitHere;
|
|
}
|
|
|
|
if (IsLocalSystem (hPDupToken) == S_OK &&
|
|
SetTokenDefaultDacl (
|
|
hPDupToken,
|
|
ptuUser->User.Sid) == S_OK)
|
|
{
|
|
break;
|
|
}
|
|
|
|
//
|
|
// Loop cleanup
|
|
//
|
|
if (!SetKernelObjectSecurity(
|
|
hPToken,
|
|
DACL_SECURITY_INFORMATION,
|
|
pSD
|
|
))
|
|
{
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
goto ExitHere;
|
|
}
|
|
fSet = FALSE;
|
|
|
|
if (hPDupToken)
|
|
{
|
|
CloseHandle (hPDupToken);
|
|
hPDupToken = NULL;
|
|
}
|
|
if (hPTokenNew)
|
|
{
|
|
CloseHandle (hPTokenNew);
|
|
hPTokenNew = NULL;
|
|
}
|
|
if (pSD != NULL)
|
|
{
|
|
ServerFree (pSD);
|
|
pSD = NULL;
|
|
}
|
|
if (hPToken)
|
|
{
|
|
CloseHandle (hPToken);
|
|
hPToken = NULL;
|
|
}
|
|
if (hProcess)
|
|
{
|
|
CloseHandle (hProcess);
|
|
hProcess = NULL;
|
|
}
|
|
}
|
|
|
|
if (i >= cbNeeded / sizeof(DWORD))
|
|
{
|
|
hr = S_FALSE;
|
|
}
|
|
|
|
ExitHere:
|
|
if (fSet)
|
|
{
|
|
if (!SetKernelObjectSecurity(
|
|
hPToken,
|
|
DACL_SECURITY_INFORMATION,
|
|
pSD
|
|
))
|
|
{
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
}
|
|
}
|
|
if (hPTokenNew)
|
|
{
|
|
CloseHandle (hPTokenNew);
|
|
}
|
|
if (hPToken)
|
|
{
|
|
CloseHandle (hPToken);
|
|
}
|
|
if (pSD != NULL)
|
|
{
|
|
ServerFree (pSD);
|
|
}
|
|
if (hProcess)
|
|
{
|
|
CloseHandle (hProcess);
|
|
}
|
|
if (rgPIDs != rgDefPIDs)
|
|
{
|
|
ServerFree (rgPIDs);
|
|
}
|
|
if (ptuUser)
|
|
{
|
|
ServerFree (ptuUser);
|
|
}
|
|
|
|
if (hr)
|
|
{
|
|
*phRet = NULL;
|
|
if (hPDupToken)
|
|
{
|
|
CloseHandle (hPDupToken);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
*phRet = hPDupToken;
|
|
}
|
|
return hr;
|
|
}
|
|
|
|
//
|
|
// ImpersonateLocalSystem
|
|
//
|
|
HRESULT ImpersonateLocalSystem ()
|
|
{
|
|
HRESULT hr = S_OK;
|
|
HANDLE hTokenLocalSys;
|
|
|
|
hr = GetLocalSystemToken (&hTokenLocalSys);
|
|
if (FAILED (hr))
|
|
{
|
|
goto ExitHere;
|
|
}
|
|
|
|
if (!ImpersonateLoggedOnUser(
|
|
hTokenLocalSys
|
|
))
|
|
{
|
|
hr = HRESULT_FROM_WIN32 (GetLastError ());
|
|
goto ExitHere;
|
|
}
|
|
|
|
ExitHere:
|
|
if (hTokenLocalSys)
|
|
{
|
|
CloseHandle (hTokenLocalSys);
|
|
}
|
|
return hr;
|
|
}
|
|
|
|
//
|
|
// RevertLocalSystemImp
|
|
//
|
|
// Revert the LocalSystem account impersonation
|
|
//
|
|
HRESULT RevertLocalSystemImp ()
|
|
{
|
|
HRESULT hr;
|
|
|
|
if (!RevertToSelf())
|
|
{
|
|
hr = HRESULT_FROM_WIN32 (GetLastError ());
|
|
}
|
|
else
|
|
{
|
|
hr = S_OK;
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
//
|
|
// AllowAccessToScpProperties
|
|
//
|
|
// The ACEs grant read/write access to the computer account
|
|
// under which the TAPI service instance will be running
|
|
//
|
|
|
|
HRESULT AllowAccessToScpProperties(
|
|
IADs *pSCPObject // IADs pointer to the SCP object.
|
|
)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
|
|
VARIANT varSD;
|
|
LPOLESTR szAttribute = L"nTSecurityDescriptor";
|
|
|
|
DWORD dwLen;
|
|
IADsSecurityDescriptor *pSD = NULL;
|
|
IADsAccessControlList *pACL = NULL;
|
|
IDispatch *pDisp = NULL;
|
|
IADsAccessControlEntry *pACE1 = NULL;
|
|
IADsAccessControlEntry *pACE2 = NULL;
|
|
IDispatch *pDispACE = NULL;
|
|
long lFlags = 0L;
|
|
|
|
SID_IDENTIFIER_AUTHORITY sia = SECURITY_NT_AUTHORITY;
|
|
PSID pSid = NULL;
|
|
LPOLESTR szTrustee = NULL;
|
|
SID_IDENTIFIER_AUTHORITY siaAll = SECURITY_WORLD_SID_AUTHORITY;
|
|
PSID pSidAll = NULL;
|
|
LPOLESTR szTrusteeAll = NULL;
|
|
|
|
//
|
|
// Give tapi server service logon account full control
|
|
//
|
|
|
|
if(!AllocateAndInitializeSid(
|
|
&sia,
|
|
1,
|
|
SECURITY_SERVICE_RID,
|
|
0, 0, 0, 0, 0, 0, 0,
|
|
&pSid
|
|
) ||
|
|
!ConvertSidToStringSidW (pSid, &szTrustee))
|
|
{
|
|
hr = HRESULT_FROM_NT(GetLastError());
|
|
goto ExitHere;
|
|
}
|
|
|
|
//
|
|
// Give everyone read access
|
|
//
|
|
|
|
if(!AllocateAndInitializeSid(
|
|
&siaAll,
|
|
1,
|
|
SECURITY_WORLD_RID,
|
|
0, 0, 0, 0, 0, 0, 0,
|
|
&pSidAll
|
|
) ||
|
|
!ConvertSidToStringSidW (pSidAll, &szTrusteeAll))
|
|
{
|
|
hr = HRESULT_FROM_NT(GetLastError());
|
|
goto ExitHere;
|
|
}
|
|
|
|
//
|
|
// Now get the nTSecurityDescriptor
|
|
//
|
|
VariantClear(&varSD);
|
|
hr = pSCPObject->Get(szAttribute, &varSD);
|
|
if (FAILED(hr) || (varSD.vt!=VT_DISPATCH)) {
|
|
LOG((TL_ERROR, "Get nTSecurityDescriptor failed: 0x%x\n", hr));
|
|
goto ExitHere;
|
|
}
|
|
|
|
//
|
|
// Use the V_DISPATCH macro to get the IDispatch pointer from VARIANT
|
|
// structure and QueryInterface for an IADsSecurityDescriptor pointer.
|
|
//
|
|
hr = V_DISPATCH( &varSD )->QueryInterface(
|
|
IID_IADsSecurityDescriptor,
|
|
(void**)&pSD
|
|
);
|
|
if (FAILED(hr)) {
|
|
LOG((TL_ERROR, "Couldn't get IADsSecurityDescriptor: 0x%x\n", hr));
|
|
goto ExitHere;
|
|
}
|
|
|
|
// Get an IADsAccessControlList pointer to the security descriptor's DACL.
|
|
hr = pSD->get_DiscretionaryAcl(&pDisp);
|
|
if (SUCCEEDED(hr))
|
|
hr = pDisp->QueryInterface(IID_IADsAccessControlList,(void**)&pACL);
|
|
if (FAILED(hr)) {
|
|
LOG((TL_ERROR, "Couldn't get DACL: 0x%x\n", hr));
|
|
goto ExitHere;
|
|
}
|
|
|
|
// Create the COM object for the first ACE.
|
|
hr = CoCreateInstance(
|
|
CLSID_AccessControlEntry,
|
|
NULL,
|
|
CLSCTX_INPROC_SERVER,
|
|
IID_IADsAccessControlEntry,
|
|
(void **)&pACE1
|
|
);
|
|
// Create the COM object for the second ACE.
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
hr = CoCreateInstance(
|
|
CLSID_AccessControlEntry,
|
|
NULL,
|
|
CLSCTX_INPROC_SERVER,
|
|
IID_IADsAccessControlEntry,
|
|
(void **)&pACE2
|
|
);
|
|
}
|
|
if (FAILED(hr)) {
|
|
LOG((TL_ERROR, "Couldn't create ACEs: 0x%x\n", hr));
|
|
goto ExitHere;
|
|
}
|
|
|
|
//
|
|
// Set the properties of the two ACEs.
|
|
//
|
|
|
|
// Set the trustee
|
|
hr = pACE1->put_Trustee( szTrustee );
|
|
hr = pACE2->put_Trustee( szTrusteeAll );
|
|
|
|
//
|
|
// Set the access rights
|
|
//
|
|
|
|
// Full access for service logon account
|
|
hr = pACE1->put_AccessMask(
|
|
ADS_RIGHT_DELETE | ADS_RIGHT_READ_CONTROL |
|
|
ADS_RIGHT_WRITE_DAC | ADS_RIGHT_WRITE_OWNER |
|
|
ADS_RIGHT_SYNCHRONIZE | ADS_RIGHT_ACCESS_SYSTEM_SECURITY |
|
|
ADS_RIGHT_GENERIC_READ | ADS_RIGHT_GENERIC_WRITE |
|
|
ADS_RIGHT_GENERIC_EXECUTE | ADS_RIGHT_GENERIC_ALL |
|
|
ADS_RIGHT_DS_CREATE_CHILD | ADS_RIGHT_DS_DELETE_CHILD |
|
|
ADS_RIGHT_ACTRL_DS_LIST | ADS_RIGHT_DS_SELF |
|
|
ADS_RIGHT_DS_READ_PROP | ADS_RIGHT_DS_WRITE_PROP |
|
|
ADS_RIGHT_DS_DELETE_TREE | ADS_RIGHT_DS_LIST_OBJECT |
|
|
ADS_RIGHT_DS_CONTROL_ACCESS
|
|
);
|
|
// Read access for everyone
|
|
hr = pACE2->put_AccessMask(
|
|
ADS_RIGHT_DS_READ_PROP | ADS_RIGHT_READ_CONTROL |
|
|
ADS_RIGHT_GENERIC_READ | ADS_RIGHT_ACTRL_DS_LIST |
|
|
ADS_RIGHT_DS_LIST_OBJECT
|
|
);
|
|
|
|
// Set the ACE type.
|
|
hr = pACE1->put_AceType( ADS_ACETYPE_ACCESS_ALLOWED_OBJECT );
|
|
hr = pACE2->put_AceType( ADS_ACETYPE_ACCESS_ALLOWED_OBJECT );
|
|
|
|
// Set AceFlags to zero because ACE is not inheritable.
|
|
hr = pACE1->put_AceFlags( 0 );
|
|
hr = pACE2->put_AceFlags( 0 );
|
|
|
|
// Set Flags to indicate an ACE that protects a specified object.
|
|
hr = pACE1->put_Flags( 0 );
|
|
hr = pACE2->put_Flags( 0 );
|
|
|
|
// Set ObjectType to the schemaIDGUID of the attribute.
|
|
hr = pACE1->put_ObjectType( NULL );
|
|
hr = pACE2->put_ObjectType( NULL );
|
|
|
|
// Add the ACEs to the DACL. Need an IDispatch pointer for each ACE
|
|
// to pass to the AddAce method.
|
|
hr = pACE1->QueryInterface(IID_IDispatch,(void**)&pDispACE);
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
hr = pACL->AddAce(pDispACE);
|
|
}
|
|
if (FAILED(hr)) {
|
|
LOG((TL_ERROR, "Couldn't add first ACE: 0x%x\n", hr));
|
|
goto ExitHere;
|
|
}
|
|
else
|
|
{
|
|
if (pDispACE)
|
|
pDispACE->Release();
|
|
pDispACE = NULL;
|
|
}
|
|
|
|
// Do it again for the second ACE.
|
|
hr = pACE2->QueryInterface(IID_IDispatch, (void**)&pDispACE);
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
hr = pACL->AddAce(pDispACE);
|
|
}
|
|
if (FAILED(hr)) {
|
|
LOG((TL_ERROR, "Couldn't add second ACE: 0x%x\n", hr));
|
|
goto ExitHere;
|
|
}
|
|
|
|
// Write the modified DACL back to the security descriptor.
|
|
hr = pSD->put_DiscretionaryAcl(pDisp);
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
// Write the ntSecurityDescriptor property to the property cache.
|
|
hr = pSCPObject->Put(szAttribute, varSD);
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
// SetInfo updates the SCP object in the directory.
|
|
hr = pSCPObject->SetInfo();
|
|
}
|
|
}
|
|
|
|
ExitHere:
|
|
if (pDispACE)
|
|
pDispACE->Release();
|
|
|
|
if (pACE1)
|
|
pACE1->Release();
|
|
|
|
if (pACE2)
|
|
pACE2->Release();
|
|
|
|
if (pACL)
|
|
pACL->Release();
|
|
|
|
if (pDisp)
|
|
pDisp->Release();
|
|
|
|
if (pSD)
|
|
pSD->Release();
|
|
|
|
if (szTrustee)
|
|
LocalFree (szTrustee);
|
|
|
|
if (pSid)
|
|
FreeSid (pSid);
|
|
|
|
if (szTrusteeAll)
|
|
LocalFree (szTrusteeAll);
|
|
|
|
if (pSidAll)
|
|
FreeSid (pSidAll);
|
|
|
|
VariantClear(&varSD);
|
|
|
|
return hr;
|
|
}
|
|
|
|
/**********************************************************
|
|
* SCP Creation
|
|
*********************************************************/
|
|
|
|
//
|
|
// CreateSCP
|
|
//
|
|
// Creates a server Service Connection Point object
|
|
// under the local host computer object
|
|
//
|
|
// Parameters:
|
|
// wszRDN - RDN
|
|
// szProductName - A member of "keywords" property
|
|
// szProductGuid - A member of "keywords" property
|
|
// szExtraKey - An extra member of "keywords" property
|
|
// szBindingInfo - value of property "serviceBindingInformation"
|
|
// szObjGuidVlueName
|
|
// - The value name to store the SCP object GUID
|
|
// under HKLM\Software\Microsoft\Windows\
|
|
// CurrentVersion\Telephony\
|
|
// if this value is NULL, we don't cache it in registry
|
|
// ppBindByGuidStr - For returning the SCP object GUID in the
|
|
// format of LPTSTR, if this is NULL, the GUID is
|
|
// not returned
|
|
//
|
|
|
|
HRESULT CreateSCP (
|
|
LPWSTR wszRDN,
|
|
LPTSTR szProductName,
|
|
LPTSTR szProductGuid,
|
|
LPTSTR szExtraKey,
|
|
LPTSTR szBindingInfo,
|
|
LPTSTR szObjGuidValueName,
|
|
LPTSTR * ppBindByGuidStr
|
|
)
|
|
{
|
|
DWORD dwStat, dwAttr, dwLen;
|
|
HRESULT hr = S_OK;
|
|
IDispatch *pDisp = NULL; // returned dispinterface of new object
|
|
IDirectoryObject *pComp = NULL; // Computer object; parent of SCP
|
|
IADs *pIADsSCP = NULL; // IADs interface on new object
|
|
BOOL bCoInited = FALSE;
|
|
BOOL bRevert = FALSE;
|
|
|
|
//
|
|
// Values for SCPs keywords attribute. Tapisrv product GUID is defined
|
|
// in server.h, vendor GUID is from MSDN
|
|
//
|
|
DWORD dwNumKeywords = 4;
|
|
TCHAR *KwVal[5]={
|
|
(LPTSTR) gszMSGuid, // Vendor GUID
|
|
(LPTSTR) szProductGuid, // Product GUID
|
|
(LPTSTR) gszVenderMS, // Vendor Name
|
|
(LPTSTR) szProductName, // Product Name
|
|
NULL
|
|
};
|
|
|
|
if (szExtraKey != NULL && szExtraKey[0] != 0)
|
|
{
|
|
KwVal[4] = szExtraKey;
|
|
++dwNumKeywords;
|
|
}
|
|
|
|
TCHAR szServer[MAX_PATH];
|
|
TCHAR szBinding[128];
|
|
TCHAR szDn[MAX_PATH];
|
|
TCHAR szAdsPath[MAX_PATH];
|
|
|
|
HKEY hReg = NULL;
|
|
DWORD dwDisp;
|
|
|
|
ADSVALUE cn,objclass,keywords[5],binding,
|
|
classname,dnsname,nametype;
|
|
|
|
//
|
|
// SCP attributes to set during creation of SCP.
|
|
//
|
|
ADS_ATTR_INFO ScpAttribs[] = {
|
|
{TEXT("cn"), ADS_ATTR_UPDATE, ADSTYPE_CASE_IGNORE_STRING, &cn, 1},
|
|
{TEXT("objectClass"), ADS_ATTR_UPDATE, ADSTYPE_CASE_IGNORE_STRING,
|
|
&objclass, 1},
|
|
{TEXT("keywords"), ADS_ATTR_UPDATE, ADSTYPE_CASE_IGNORE_STRING,
|
|
keywords, dwNumKeywords},
|
|
{TEXT("serviceDNSName"), ADS_ATTR_UPDATE, ADSTYPE_CASE_IGNORE_STRING,
|
|
&dnsname, 1},
|
|
{TEXT("serviceDNSNameType"), ADS_ATTR_UPDATE,ADSTYPE_CASE_IGNORE_STRING,
|
|
&nametype, 1},
|
|
{TEXT("serviceClassName"), ADS_ATTR_UPDATE, ADSTYPE_CASE_IGNORE_STRING,
|
|
&classname, 1},
|
|
{TEXT("serviceBindingInformation"), ADS_ATTR_UPDATE,
|
|
ADSTYPE_CASE_IGNORE_STRING,
|
|
&binding, 1},
|
|
};
|
|
|
|
// A binding GUID is of format
|
|
// LDAP:<GUID=B1A37774-E3F7-488E-ADBFD4DB8A4AB2E5>
|
|
BSTR bstrGuid = NULL;
|
|
TCHAR szBindByGuidStr[64];
|
|
|
|
//
|
|
// Do CoInitializeEx
|
|
//
|
|
hr = CoInitializeEx (NULL, COINIT_MULTITHREADED);
|
|
if (FAILED (hr))
|
|
{
|
|
goto ExitHere;
|
|
}
|
|
bCoInited = TRUE;
|
|
|
|
//
|
|
// Do all the operation in LocalSystem account
|
|
//
|
|
if (IsCurrentLocalSystem () != S_OK)
|
|
{
|
|
hr = ImpersonateLocalSystem ();
|
|
if (hr)
|
|
{
|
|
goto ExitHere;
|
|
}
|
|
bRevert = TRUE;
|
|
}
|
|
|
|
//
|
|
// Get the DNS name of the local computer
|
|
//
|
|
dwLen = sizeof(szServer);
|
|
if (!GetComputerNameEx(
|
|
ComputerNameDnsFullyQualified,
|
|
szServer,
|
|
&dwLen
|
|
))
|
|
{
|
|
hr = HRESULT_FROM_NT(GetLastError());
|
|
LOG((TL_ERROR, "GetComputerNameEx: %s\n", szServer));
|
|
goto ExitHere;
|
|
}
|
|
|
|
//
|
|
// Fill in the attribute values to be stored in the SCP.
|
|
//
|
|
|
|
cn.dwType = ADSTYPE_CASE_IGNORE_STRING;
|
|
cn.CaseIgnoreString = wszRDN + 3; // 3 is the size of "CN="
|
|
objclass.dwType = ADSTYPE_CASE_IGNORE_STRING;
|
|
objclass.CaseIgnoreString = TEXT("serviceConnectionPoint");
|
|
|
|
keywords[0].dwType = ADSTYPE_CASE_IGNORE_STRING;
|
|
keywords[1].dwType = ADSTYPE_CASE_IGNORE_STRING;
|
|
keywords[2].dwType = ADSTYPE_CASE_IGNORE_STRING;
|
|
keywords[3].dwType = ADSTYPE_CASE_IGNORE_STRING;
|
|
keywords[4].dwType = ADSTYPE_CASE_IGNORE_STRING;
|
|
|
|
keywords[0].CaseIgnoreString=KwVal[0];
|
|
keywords[1].CaseIgnoreString=KwVal[1];
|
|
keywords[2].CaseIgnoreString=KwVal[2];
|
|
keywords[3].CaseIgnoreString=KwVal[3];
|
|
keywords[4].CaseIgnoreString=KwVal[4];
|
|
|
|
dnsname.dwType = ADSTYPE_CASE_IGNORE_STRING;
|
|
dnsname.CaseIgnoreString = szServer;
|
|
nametype.dwType = ADSTYPE_CASE_IGNORE_STRING;
|
|
nametype.CaseIgnoreString = TEXT("A");
|
|
|
|
classname.dwType = ADSTYPE_CASE_IGNORE_STRING;
|
|
classname.CaseIgnoreString = szProductName;
|
|
|
|
binding.dwType = ADSTYPE_CASE_IGNORE_STRING;
|
|
binding.CaseIgnoreString = szBindingInfo;
|
|
|
|
//
|
|
// Get the distinguished name of the computer object for the local computer
|
|
//
|
|
dwLen = sizeof(szDn);
|
|
if (!GetComputerObjectName(NameFullyQualifiedDN, szDn, &dwLen))
|
|
{
|
|
hr = HRESULT_FROM_NT(GetLastError());
|
|
LOG((TL_ERROR, "GetComputerObjectName: %s\n", szDn));
|
|
goto ExitHere;
|
|
}
|
|
|
|
//
|
|
// Compose the ADSpath and bind to the computer object for the local computer
|
|
//
|
|
_tcscpy(szAdsPath,TEXT("LDAP://"));
|
|
_tcscat(szAdsPath,szDn);
|
|
hr = ADsGetObject(szAdsPath, IID_IDirectoryObject, (void **)&pComp);
|
|
if (FAILED(hr)) {
|
|
LOG((TL_ERROR, "Failed to bind Computer Object.",hr));
|
|
goto ExitHere;
|
|
}
|
|
|
|
//*******************************************************************
|
|
// Publish the SCP as a child of the computer object
|
|
//*******************************************************************
|
|
|
|
// Figure out attribute count.
|
|
dwAttr = sizeof(ScpAttribs)/sizeof(ADS_ATTR_INFO);
|
|
|
|
// Do the Deed!
|
|
hr = pComp->CreateDSObject(
|
|
wszRDN,
|
|
ScpAttribs,
|
|
dwAttr,
|
|
&pDisp
|
|
);
|
|
if (FAILED(hr)) {
|
|
LOG((TL_ERROR, "Failed to create SCP: 0x%x\n", hr));
|
|
if (HRESULT_CODE(hr) == ERROR_OBJECT_ALREADY_EXISTS)
|
|
{
|
|
hr = HRESULT_FROM_NT (TAPIERR_SCP_ALREADY_EXISTS);
|
|
}
|
|
goto ExitHere;
|
|
}
|
|
|
|
// Query for an IADs pointer on the SCP object.
|
|
hr = pDisp->QueryInterface(IID_IADs,(void **)&pIADsSCP);
|
|
if (FAILED(hr)) {
|
|
LOG((TL_ERROR, "Failed to QI for IADs: 0x%x\n",hr));
|
|
goto ExitHere;
|
|
}
|
|
|
|
// Set ACEs on SCP so service can modify it.
|
|
hr = AllowAccessToScpProperties(
|
|
pIADsSCP // IADs pointer to the SCP object.
|
|
);
|
|
if (FAILED(hr)) {
|
|
LOG((TL_ERROR, "Failed to set ACEs on SCP DACL: 0x%x\n", hr));
|
|
goto ExitHere;
|
|
}
|
|
|
|
// Retrieve the SCP's objectGUID in format suitable for binding.
|
|
hr = pIADsSCP->get_GUID(&bstrGuid);
|
|
if (FAILED(hr)) {
|
|
LOG((TL_ERROR, "Failed to get GUID: 0x%x\n", hr));
|
|
goto ExitHere;
|
|
}
|
|
|
|
// Build a string for binding to the object by GUID
|
|
_tcscpy(szBindByGuidStr, TEXT("LDAP://<GUID="));
|
|
_tcscat(szBindByGuidStr, bstrGuid);
|
|
_tcscat(szBindByGuidStr, TEXT(">"));
|
|
LOG((TL_INFO, "GUID binding string: %S\n", szBindByGuidStr));
|
|
|
|
// Set the returning BindByGuidStr if any
|
|
if (ppBindByGuidStr)
|
|
{
|
|
*ppBindByGuidStr = (LPTSTR) ServerAlloc (
|
|
(_tcslen (szBindByGuidStr) + 1) * sizeof(TCHAR)
|
|
);
|
|
if (*ppBindByGuidStr == NULL)
|
|
{
|
|
hr = LINEERR_NOMEM;
|
|
goto ExitHere;
|
|
}
|
|
_tcscpy (*ppBindByGuidStr, szBindByGuidStr);
|
|
}
|
|
|
|
// Create a registry key under
|
|
// HKEY_LOCAL_MACHINE\SOFTWARE\Vendor\Product.
|
|
if (szObjGuidValueName)
|
|
{
|
|
dwStat = RegCreateKeyEx(
|
|
HKEY_LOCAL_MACHINE,
|
|
gszRegKeyTelephony,
|
|
0,
|
|
NULL,
|
|
REG_OPTION_NON_VOLATILE,
|
|
KEY_SET_VALUE,
|
|
NULL,
|
|
&hReg,
|
|
&dwDisp);
|
|
if (dwStat != NO_ERROR) {
|
|
hr = HRESULT_FROM_NT(GetLastError());
|
|
LOG((TL_ERROR, "RegCreateKeyEx failed: 0x%x\n", hr));
|
|
return hr;
|
|
}
|
|
|
|
// Cache the GUID binding string under the registry key.
|
|
dwStat = RegSetValueEx(
|
|
hReg,
|
|
szObjGuidValueName,
|
|
0,
|
|
REG_SZ,
|
|
(const BYTE *)szBindByGuidStr,
|
|
sizeof(TCHAR)*(_tcslen(szBindByGuidStr))
|
|
);
|
|
if (dwStat != NO_ERROR) {
|
|
hr = HRESULT_FROM_NT(GetLastError());
|
|
LOG((TL_ERROR, "RegSetValueEx failed: 0x%x\n", hr));
|
|
// goto ExitHere;
|
|
}
|
|
}
|
|
|
|
ExitHere:
|
|
if (pDisp)
|
|
{
|
|
pDisp->Release();
|
|
}
|
|
if (pIADsSCP)
|
|
{
|
|
pIADsSCP->Release();
|
|
}
|
|
if (hReg)
|
|
{
|
|
RegCloseKey(hReg);
|
|
}
|
|
if (bstrGuid)
|
|
{
|
|
SysFreeString (bstrGuid);
|
|
}
|
|
if (pComp)
|
|
{
|
|
if (FAILED(hr))
|
|
{
|
|
pComp->DeleteDSObject (wszRDN);
|
|
}
|
|
pComp->Release();
|
|
}
|
|
|
|
if (bRevert)
|
|
{
|
|
RevertLocalSystemImp ();
|
|
}
|
|
|
|
if (bCoInited)
|
|
{
|
|
CoUninitialize ();
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
//
|
|
// CreateTapiSCP
|
|
//
|
|
// Creates the TAPI server Service Connection Point object
|
|
// under the local host computer object
|
|
//
|
|
// Parameters:
|
|
// pGuidAssoc - GUID of the line/user association objecct GUID
|
|
// currently NULL
|
|
// pGuidCluster - The cluster object GUID this server belonging to
|
|
//
|
|
|
|
HRESULT CreateTapiSCP (
|
|
GUID * pGuidAssoc,
|
|
GUID * pGuidCluster
|
|
)
|
|
{
|
|
DWORD dwStat, dwAttr, dwLen;
|
|
HRESULT hr = S_OK;
|
|
|
|
TCHAR szGUIDCluster[40];
|
|
TCHAR szGUIDAssoc[40];
|
|
TCHAR szBinding[128];
|
|
|
|
EnterCriticalSection(&gSCPCritSec);
|
|
|
|
// Construct the binding information
|
|
if (pGuidCluster != NULL)
|
|
{
|
|
StringFromGUID2 (
|
|
*pGuidCluster,
|
|
szGUIDCluster,
|
|
sizeof(szGUIDCluster) / sizeof(TCHAR)
|
|
);
|
|
}
|
|
else
|
|
{
|
|
szGUIDCluster[0] = 0;
|
|
}
|
|
if (pGuidAssoc != NULL)
|
|
{
|
|
StringFromGUID2 (
|
|
*pGuidAssoc,
|
|
szGUIDAssoc,
|
|
sizeof(szGUIDAssoc) / sizeof(TCHAR)
|
|
);
|
|
}
|
|
else
|
|
{
|
|
szGUIDAssoc[0] = 0;
|
|
}
|
|
|
|
wsprintf(
|
|
szBinding,
|
|
gszTapisrvBindingInfo,
|
|
szGUIDCluster,
|
|
szGUIDAssoc,
|
|
TEXT("Inactive"),
|
|
TEXT("")
|
|
);
|
|
|
|
hr = CreateSCP (
|
|
(LPWSTR) gwszTapisrvRDN,
|
|
(LPTSTR) gszTapisrvProdName,
|
|
(LPTSTR) gszTapisrvGuid,
|
|
(pGuidCluster == NULL) ? NULL : ((LPTSTR)szGUIDCluster),
|
|
(LPTSTR) szBinding,
|
|
(LPTSTR) gszRegTapisrvSCPGuid,
|
|
NULL
|
|
);
|
|
|
|
LeaveCriticalSection(&gSCPCritSec);
|
|
|
|
return hr;
|
|
}
|
|
|
|
//
|
|
// CreateProxySCP
|
|
//
|
|
// Creates the TAPI proxy server Service Connection Point object
|
|
// under the local host computer object
|
|
//
|
|
// Parameters:
|
|
// szClsid - class ID of the proxy server object for DCOM invokation
|
|
// ppBindByGuidStr
|
|
// - where to return the BindByGuid string pointer
|
|
//
|
|
|
|
HRESULT CreateProxySCP (
|
|
LPTSTR szClsid,
|
|
LPTSTR * ppBindByGuidStr
|
|
)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
|
|
// RDN size include "cn=TAPI Proxy Server" + szClsid(38ch)
|
|
WCHAR wszRDN[128];
|
|
WCHAR *psz;
|
|
|
|
wcscpy (wszRDN, gwszProxyRDN);
|
|
wcscat (wszRDN, L"{");
|
|
psz = wszRDN + wcslen(wszRDN);
|
|
#ifndef UNICODE
|
|
if (MultiByteToWideChar (
|
|
CP_ACP,
|
|
MB_PRECOMPOSED,
|
|
szClsid,
|
|
-1,
|
|
psz,
|
|
(sizeof(wszRDN) - sizeof(gwszProxyRDN)) / sizeof(WCHAR) - 3
|
|
// 3 is to compensate for the two brace
|
|
) == 0)
|
|
{
|
|
hr = HRESULT_FROM_NT(GetLastError());
|
|
goto ExitHere;
|
|
}
|
|
#else
|
|
wcscat (wszRDN, szClsid);
|
|
#endif
|
|
wcscat (wszRDN, L"}");
|
|
|
|
hr = CreateSCP (
|
|
(LPWSTR) wszRDN,
|
|
(LPTSTR) gszProxyProdName,
|
|
(LPTSTR) gszProxyGuid,
|
|
NULL,
|
|
(LPTSTR) szClsid,
|
|
NULL,
|
|
ppBindByGuidStr
|
|
);
|
|
|
|
return hr;
|
|
}
|
|
|
|
/**********************************************************
|
|
* SCP Update
|
|
*********************************************************/
|
|
|
|
//
|
|
// UpdateSCP
|
|
//
|
|
// Update a general SCP properties when necessary to keep every
|
|
// piece ofthe information up to date. The following will be checked:
|
|
// 1. Check the serviceDNSName property against current computer
|
|
// DNS name to ensure consistancy
|
|
// 2. Check the binding information with the information given
|
|
//
|
|
// Parameters:
|
|
// szAdsPath - The ADs path of the SCP object
|
|
// szBinding - The binding information to compare with
|
|
//
|
|
|
|
HRESULT UpdateSCP (
|
|
LPTSTR szAdsPath,
|
|
LPTSTR szBinding
|
|
)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
DWORD dwAttrs;
|
|
int i;
|
|
ADSVALUE dnsname,binding;
|
|
|
|
DWORD dwLen;
|
|
BOOL bUpdate=FALSE;
|
|
BOOL bCoInited = FALSE;
|
|
BOOL bRevert = FALSE;
|
|
|
|
IDirectoryObject *pObj = NULL;
|
|
PADS_ATTR_INFO pAttribs = NULL;
|
|
|
|
TCHAR szServer[MAX_PATH];
|
|
|
|
TCHAR *pszAttrs[]={
|
|
TEXT("serviceDNSName"),
|
|
TEXT("serviceBindingInformation")
|
|
};
|
|
|
|
ADS_ATTR_INFO Attribs[]={
|
|
{TEXT("serviceDNSName"),ADS_ATTR_UPDATE,ADSTYPE_CASE_IGNORE_STRING,&
|
|
dnsname,1},
|
|
{TEXT("serviceBindingInformation"),ADS_ATTR_UPDATE,
|
|
ADSTYPE_CASE_IGNORE_STRING,&binding,1},
|
|
};
|
|
|
|
//
|
|
// Do CoInitializeEx
|
|
//
|
|
hr = CoInitializeEx (NULL, COINIT_MULTITHREADED);
|
|
if (FAILED (hr))
|
|
{
|
|
goto ExitHere;
|
|
}
|
|
bCoInited = TRUE;
|
|
|
|
//
|
|
// Do all the operation in LocalSystem account
|
|
//
|
|
if (IsCurrentLocalSystem() != S_OK)
|
|
{
|
|
hr = ImpersonateLocalSystem ();
|
|
if (hr)
|
|
{
|
|
goto ExitHere;
|
|
}
|
|
bRevert = TRUE;
|
|
}
|
|
|
|
// Get the DNS name of the host server.
|
|
dwLen = sizeof(szServer)/sizeof(TCHAR);
|
|
if (!GetComputerNameEx(ComputerNameDnsFullyQualified, szServer, &dwLen))
|
|
{
|
|
hr = HRESULT_FROM_NT(GetLastError());
|
|
goto ExitHere;
|
|
}
|
|
|
|
// Bind to the SCP.
|
|
hr = ADsGetObject(szAdsPath, IID_IDirectoryObject, (void **)&pObj);
|
|
if (FAILED(hr))
|
|
{
|
|
LOG((TL_ERROR,
|
|
"ADsGetObject failed to bind to GUID (bind string: %S): ",
|
|
szAdsPath
|
|
));
|
|
goto ExitHere;
|
|
}
|
|
|
|
// Retrieve attributes from the SCP.
|
|
hr = pObj->GetObjectAttributes(pszAttrs, 2, &pAttribs, &dwAttrs);
|
|
if (FAILED(hr)) {
|
|
LOG((TL_ERROR, "GetObjectAttributes failed"));
|
|
goto ExitHere;
|
|
}
|
|
|
|
// Check if we got the correct attribute type
|
|
if (pAttribs->dwADsType != ADSTYPE_CASE_IGNORE_STRING ||
|
|
(pAttribs+1)->dwADsType != ADSTYPE_CASE_IGNORE_STRING)
|
|
{
|
|
LOG((TL_ERROR,
|
|
"GetObjectAttributes returned dwADsType (%d,%d) instead of CASE_IGNORE_STRING",
|
|
pAttribs->dwADsType,
|
|
(pAttribs+1)->dwADsType
|
|
));
|
|
goto ExitHere;
|
|
}
|
|
|
|
// Compare the current DNS name and port to the values retrieved from
|
|
// the SCP. Update the SCP only if something has changed.
|
|
for (i=0; i<(LONG)dwAttrs; i++)
|
|
{
|
|
if (_tcsicmp(TEXT("serviceDNSName"), pAttribs[i].pszAttrName)==0)
|
|
{
|
|
if (_tcsicmp(szServer, pAttribs[i].pADsValues->CaseIgnoreString) != 0)
|
|
{
|
|
LOG((TL_TRACE, "serviceDNSName being updated", 0));
|
|
bUpdate = TRUE;
|
|
}
|
|
else
|
|
{
|
|
LOG((TL_TRACE, "serviceDNSName okay", 0));
|
|
}
|
|
}
|
|
else if (_tcsicmp(
|
|
TEXT("serviceBindingInformation"),
|
|
pAttribs[i].pszAttrName
|
|
)==0)
|
|
{
|
|
if (_tcsicmp(szBinding, pAttribs[i].pADsValues->CaseIgnoreString) != 0)
|
|
{
|
|
LOG((TL_TRACE, "serviceBindingInformation being updated", 0));
|
|
bUpdate = TRUE;
|
|
}
|
|
else
|
|
{
|
|
LOG((TL_TRACE, "serviceBindingInformation okay"));
|
|
}
|
|
}
|
|
}
|
|
|
|
// The binding information or server name have changed,
|
|
// so update the SCP values.
|
|
if (bUpdate)
|
|
{
|
|
dnsname.dwType = ADSTYPE_CASE_IGNORE_STRING;
|
|
dnsname.CaseIgnoreString = szServer;
|
|
binding.dwType = ADSTYPE_CASE_IGNORE_STRING;
|
|
binding.CaseIgnoreString = szBinding;
|
|
hr = pObj->SetObjectAttributes(Attribs, 2, &dwAttrs);
|
|
if (FAILED(hr))
|
|
{
|
|
LOG((TL_ERROR, "ScpUpdate: Failed to set SCP values. 0x%x", hr));
|
|
goto ExitHere;
|
|
}
|
|
}
|
|
|
|
ExitHere:
|
|
if (pAttribs)
|
|
{
|
|
FreeADsMem(pAttribs);
|
|
}
|
|
if (pObj)
|
|
{
|
|
pObj->Release();
|
|
}
|
|
|
|
if (bRevert)
|
|
{
|
|
RevertLocalSystemImp ();
|
|
}
|
|
|
|
if (bCoInited)
|
|
{
|
|
CoUninitialize ();
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
//
|
|
// UpdateTapiSCP
|
|
//
|
|
// Update TAPI server SCP properties when necessary to keep every
|
|
// piece ofthe information up to date. The following will be checked:
|
|
//
|
|
// Parameters:
|
|
// pGuidAssoc - The line/user association guid
|
|
// pGuidCluster - The cluster GUID
|
|
//
|
|
|
|
HRESULT UpdateTapiSCP (
|
|
BOOL bActive,
|
|
GUID * pGuidAssoc,
|
|
GUID * pGuidCluster
|
|
)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
TCHAR szGUIDCluster[40];
|
|
TCHAR szGUIDAssoc[40];
|
|
TCHAR szBinding[128];
|
|
|
|
DWORD dwStat, dwType, dwLen;
|
|
HKEY hReg = NULL;
|
|
TCHAR szAdsPath[MAX_PATH];
|
|
|
|
LOG((TL_TRACE, "UpdateTapiSCP: enter, bActive: %d", bActive));
|
|
|
|
EnterCriticalSection(&gSCPCritSec);
|
|
|
|
// Open the service's registry key.
|
|
dwStat = RegOpenKeyEx(
|
|
HKEY_LOCAL_MACHINE,
|
|
gszRegKeyTelephony,
|
|
0,
|
|
KEY_QUERY_VALUE,
|
|
&hReg
|
|
);
|
|
if (dwStat != NO_ERROR)
|
|
{
|
|
// Probably because the SCP never published, CreateTapiSCP
|
|
LOG((TL_ERROR, "RegOpenKeyEx failed", dwStat));
|
|
hr = HRESULT_FROM_NT(dwStat);
|
|
goto ExitHere;
|
|
}
|
|
|
|
// Get the GUID binding string used to bind to the service's SCP.
|
|
dwLen = sizeof(szAdsPath);
|
|
dwStat = RegQueryValueEx(
|
|
hReg,
|
|
gszRegTapisrvSCPGuid,
|
|
0,
|
|
&dwType,
|
|
(LPBYTE)szAdsPath,
|
|
&dwLen
|
|
);
|
|
if (dwStat != NO_ERROR)
|
|
{
|
|
LOG((TL_ERROR, "UpdateTapiSCP: RegQueryValueEx TapisrvSCPGuid failed, error 0x%x", dwStat));
|
|
if (TapiGlobals.dwFlags & TAPIGLOBALS_SERVER)
|
|
{
|
|
if (FAILED(hr = CreateTapiSCP (pGuidAssoc, pGuidCluster)))
|
|
{
|
|
LOG((TL_ERROR, "UpdateTapiSCP: CreateTapiSCP failed"));
|
|
goto ExitHere;
|
|
}
|
|
|
|
// CreateTapiSCP succeeded, need to read the guid
|
|
dwLen = sizeof(szAdsPath);
|
|
dwStat = RegQueryValueEx(
|
|
hReg,
|
|
gszRegTapisrvSCPGuid,
|
|
0,
|
|
&dwType,
|
|
(LPBYTE)szAdsPath,
|
|
&dwLen
|
|
);
|
|
if (dwStat != NO_ERROR)
|
|
{
|
|
LOG((TL_ERROR, "UpdateTapiSCP: CreateTapiSCP succeeded but cannot read the guid"));
|
|
hr = HRESULT_FROM_NT(dwStat);
|
|
goto ExitHere;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
LOG((TL_TRACE, "UpdateTapiSCP: Telephony server is not enabled"));
|
|
hr = HRESULT_FROM_NT(dwStat);
|
|
goto ExitHere;
|
|
}
|
|
}
|
|
|
|
// Format to generate desired binding information
|
|
if (pGuidCluster != NULL)
|
|
{
|
|
StringFromGUID2 (
|
|
*pGuidCluster,
|
|
szGUIDCluster,
|
|
sizeof(szGUIDCluster) / sizeof(TCHAR)
|
|
);
|
|
}
|
|
else
|
|
{
|
|
szGUIDCluster[0] = 0;
|
|
}
|
|
if (pGuidAssoc != NULL)
|
|
{
|
|
StringFromGUID2 (
|
|
*pGuidAssoc,
|
|
szGUIDAssoc,
|
|
sizeof(szGUIDAssoc) / sizeof(TCHAR)
|
|
);
|
|
}
|
|
else
|
|
{
|
|
szGUIDAssoc[0] = 0;
|
|
}
|
|
|
|
//
|
|
// Now construct the serviceBindingInformation based on the
|
|
// service status
|
|
//
|
|
if (bActive)
|
|
{
|
|
TCHAR szTTL[64];
|
|
FILETIME ftCur;
|
|
ULONGLONG ullInc, ullTime;
|
|
SYSTEMTIME stExp;
|
|
|
|
// Get current time
|
|
GetSystemTimeAsFileTime (&ftCur);
|
|
CopyMemory (&ullTime, &ftCur, sizeof(ULONGLONG));
|
|
|
|
// Get the time increment for gdwTapiSCPTTL minutes
|
|
// FILETIME is in the unit of 100 nanoseconds
|
|
ullInc = ((ULONGLONG)gdwTapiSCPTTL) * 60 * 10000000;
|
|
|
|
// Get the record expiration time
|
|
ullTime += ullInc;
|
|
CopyMemory (&ftCur, &ullTime, sizeof(FILETIME));
|
|
|
|
//
|
|
// Convert the expiration time to system time and
|
|
// format the string
|
|
//
|
|
// The current TTL string is the concatenation of
|
|
// Year, Month, Date, Hour, Minute, Second, Milliseconds
|
|
// There are 5 digits allocated for year, 3 digits for
|
|
// milliseconds, and 2 digits fro the remaining fields
|
|
// all the numbers are zero padded to fill the extra space
|
|
//
|
|
// Format here needs to be consistant with \
|
|
// sp\remotesp\dslookup.cpp
|
|
//
|
|
|
|
FileTimeToSystemTime (&ftCur, &stExp);
|
|
wsprintf (
|
|
szTTL,
|
|
TEXT("%05d%02d%02d%02d%02d%02d%03d"),
|
|
stExp.wYear,
|
|
stExp.wMonth,
|
|
stExp.wDay,
|
|
stExp.wHour,
|
|
stExp.wMinute,
|
|
stExp.wSecond,
|
|
stExp.wMilliseconds
|
|
);
|
|
|
|
wsprintf(
|
|
szBinding,
|
|
gszTapisrvBindingInfo,
|
|
szGUIDCluster,
|
|
szGUIDAssoc,
|
|
TEXT("Active"),
|
|
szTTL
|
|
);
|
|
}
|
|
else
|
|
{
|
|
wsprintf(
|
|
szBinding,
|
|
gszTapisrvBindingInfo,
|
|
szGUIDCluster,
|
|
szGUIDAssoc,
|
|
TEXT("Inactive"),
|
|
TEXT("")
|
|
);
|
|
}
|
|
|
|
hr = UpdateSCP (
|
|
szAdsPath,
|
|
szBinding
|
|
);
|
|
|
|
ExitHere:
|
|
|
|
if (hReg)
|
|
{
|
|
RegCloseKey (hReg);
|
|
}
|
|
LeaveCriticalSection(&gSCPCritSec);
|
|
return hr;
|
|
}
|
|
|
|
//
|
|
// Proxy server exists only if TAPI server are alive
|
|
// the DS information not likely to change when TAPI server is
|
|
// alive, so no SCP updating routine for Proxy server
|
|
//
|
|
|
|
/**********************************************************
|
|
* SCP Removal
|
|
*********************************************************/
|
|
|
|
//
|
|
// RemoveSCP
|
|
//
|
|
// Removes a Service Connection Point object from the
|
|
// local host computer object.
|
|
//
|
|
// Parameters:
|
|
// wszRDN - the RDN of the SCP to delete
|
|
// szRegNameToDel
|
|
// - The registery value name to be deleted
|
|
// If this value is NULL, no registry del
|
|
//
|
|
|
|
HRESULT RemoveSCP (
|
|
LPWSTR wszRDN,
|
|
LPTSTR szRegNameToDel
|
|
)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
TCHAR szServer[MAX_PATH];
|
|
TCHAR szAdsPath[MAX_PATH];
|
|
DWORD dwLen, dwStat;
|
|
HKEY hReg;
|
|
IDirectoryObject * pComp = NULL;
|
|
BOOL bCoInited = FALSE;
|
|
BOOL bRevert = FALSE;
|
|
|
|
LOG((TL_TRACE, "RemoveSCP %S %S", wszRDN, szRegNameToDel));
|
|
|
|
//
|
|
// Do CoInitializeEx
|
|
//
|
|
hr = CoInitializeEx (NULL, COINIT_MULTITHREADED);
|
|
if (FAILED (hr))
|
|
{
|
|
goto ExitHere;
|
|
}
|
|
bCoInited = TRUE;
|
|
|
|
//
|
|
// Do all the operation in LocalSystem account
|
|
//
|
|
if (IsCurrentLocalSystem() != S_OK)
|
|
{
|
|
hr = ImpersonateLocalSystem ();
|
|
if (hr)
|
|
{
|
|
goto ExitHere;
|
|
}
|
|
bRevert = TRUE;
|
|
}
|
|
|
|
// Get the DNS name of the host server.
|
|
dwLen = sizeof(szServer);
|
|
if (!GetComputerObjectName(NameFullyQualifiedDN, szServer, &dwLen))
|
|
{
|
|
hr = HRESULT_FROM_NT(GetLastError());
|
|
goto ExitHere;
|
|
}
|
|
|
|
//
|
|
// Compose the ADSpath and bind to the computer object for the local computer
|
|
//
|
|
_tcscpy(szAdsPath,TEXT("LDAP://"));
|
|
_tcscat(szAdsPath,szServer);
|
|
hr = ADsGetObject(szAdsPath, IID_IDirectoryObject, (void **)&pComp);
|
|
if (FAILED(hr)) {
|
|
LOG((TL_ERROR, "Failed (%x) to bind Computer Object.",hr));
|
|
goto ExitHere;
|
|
}
|
|
|
|
hr = pComp->DeleteDSObject (wszRDN);
|
|
if (FAILED (hr))
|
|
{
|
|
LOG((TL_ERROR, "Failed (%x) to Delete Tapisrv Object.",hr));
|
|
if (HRESULT_CODE(hr) == ERROR_DS_NO_SUCH_OBJECT)
|
|
{
|
|
hr = HRESULT_FROM_NT (TAPIERR_SCP_DOES_NOT_EXIST);
|
|
}
|
|
goto ExitHere;
|
|
}
|
|
|
|
// Open the service's registry key.
|
|
if (szRegNameToDel)
|
|
{
|
|
dwStat = RegOpenKeyEx(
|
|
HKEY_LOCAL_MACHINE,
|
|
gszRegKeyTelephony,
|
|
0,
|
|
KEY_QUERY_VALUE | KEY_WRITE,
|
|
&hReg);
|
|
if (dwStat == NO_ERROR)
|
|
{
|
|
RegDeleteValue (
|
|
hReg,
|
|
szRegNameToDel
|
|
);
|
|
RegCloseKey (hReg);
|
|
}
|
|
else
|
|
{
|
|
LOG((TL_ERROR, "RegOpenKeyEx failed", dwStat));
|
|
hr = HRESULT_FROM_NT(GetLastError());
|
|
// goto ExitHere;
|
|
}
|
|
}
|
|
|
|
ExitHere:
|
|
if (pComp)
|
|
pComp->Release();
|
|
if (bRevert)
|
|
{
|
|
RevertLocalSystemImp ();
|
|
}
|
|
if (bCoInited)
|
|
{
|
|
CoUninitialize ();
|
|
}
|
|
return hr;
|
|
}
|
|
|
|
//
|
|
// RemoveTapiSCP
|
|
//
|
|
// Removes the TAPI server Service Connection Point object from the
|
|
// local host computer object. This happens if a TAPI server machine
|
|
// retires from service.
|
|
//
|
|
|
|
HRESULT RemoveTapiSCP (
|
|
)
|
|
{
|
|
DWORD dwResult;
|
|
|
|
EnterCriticalSection(&gSCPCritSec);
|
|
dwResult = RemoveSCP (
|
|
(LPWSTR) gwszTapisrvRDN,
|
|
(LPTSTR) gszRegTapisrvSCPGuid
|
|
);
|
|
LeaveCriticalSection(&gSCPCritSec);
|
|
|
|
return dwResult;
|
|
}
|
|
|
|
//
|
|
// RemoveProxySCP
|
|
//
|
|
// Removes the proxy server Service Connection Point object from the
|
|
// local host computer object. This happens if the last line is closed
|
|
// from a certain proxy server (CLSID)
|
|
//
|
|
|
|
HRESULT RemoveProxySCP (
|
|
LPTSTR szClsid
|
|
)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
|
|
// Construct the RDN
|
|
// RDN size include "cn=TAPI Proxy Server" + szClsid(38ch)
|
|
WCHAR wszRDN[128];
|
|
WCHAR *psz;
|
|
|
|
wcscpy (wszRDN, gwszProxyRDN);
|
|
wcscat (wszRDN, L"{");
|
|
psz = wszRDN + wcslen(wszRDN);
|
|
#ifndef UNICODE
|
|
if (MultiByteToWideChar (
|
|
CP_ACP,
|
|
MB_PRECOMPOSED,
|
|
szClsid,
|
|
-1,
|
|
psz,
|
|
(sizeof(wszRDN) - sizeof(gwszProxyRDN)) / sizeof(WCHAR) - 3
|
|
// 3 is to compensate for the two brace
|
|
) == 0)
|
|
{
|
|
hr = HRESULT_FROM_NT(GetLastError());
|
|
goto ExitHere;
|
|
}
|
|
#else
|
|
wcscat (wszRDN, szClsid);
|
|
#endif
|
|
wcscat (wszRDN, L"}");
|
|
|
|
// Call RemoveSCP
|
|
hr = RemoveSCP (
|
|
wszRDN,
|
|
NULL
|
|
);
|
|
|
|
//ExitHere:
|
|
return hr;
|
|
}
|
|
|
|
/**********************************************************
|
|
* Proxy Server SCP management
|
|
*********************************************************/
|
|
|
|
//
|
|
// The Rules:
|
|
// 1. An array of created SCP objects and their corresponding CLSID
|
|
// is maintained in a global data structure PROXY_SCPS
|
|
// 2. ServerInit calls OnProxySCPInit & ServerShutdown calls
|
|
// OnProxySCPShutdown
|
|
// 3. Every LOpen with proxy privilege will call OnProxyLineOpen with
|
|
// the proxy server CLSID as the input parameter.
|
|
// An SCP object will be created for a new CLSID, subsequent LOpen
|
|
// with the same CLSID will only increment the ref count
|
|
// 4. Every LClose with on a line (opened with proxy privilege) will call
|
|
// OnProxyLineClose with the proxy server CLSID as the input parameter
|
|
// The ref count is decemented every time for the SCP with the CLSID,
|
|
// if the ref count goes to zero, the SCP object will be deleted.
|
|
//
|
|
|
|
HRESULT OnProxySCPInit (
|
|
)
|
|
{
|
|
TapiEnterCriticalSection (&TapiGlobals.CritSec);
|
|
ZeroMemory (&gProxyScps, sizeof(gProxyScps));
|
|
TapiLeaveCriticalSection (&TapiGlobals.CritSec);
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
HRESULT OnProxySCPShutdown (
|
|
)
|
|
{
|
|
DWORD i;
|
|
|
|
TapiEnterCriticalSection (&TapiGlobals.CritSec);
|
|
for (i = 0; i < gProxyScps.dwUsedEntries; ++i)
|
|
{
|
|
RemoveProxySCP (gProxyScps.aEntries[i].szClsid);
|
|
}
|
|
if (gProxyScps.aEntries != NULL)
|
|
{
|
|
ServerFree (gProxyScps.aEntries);
|
|
}
|
|
ZeroMemory (&gProxyScps, sizeof(gProxyScps));
|
|
TapiLeaveCriticalSection (&TapiGlobals.CritSec);
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
HRESULT OnProxyLineOpen (
|
|
LPTSTR szClsid
|
|
)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
BOOL fExists = FALSE;
|
|
DWORD i;
|
|
|
|
// Skip beginning/trailing white space
|
|
while (*szClsid == TEXT(' ') || *szClsid == TEXT('\t'))
|
|
++ szClsid;
|
|
// A valid CLSID string should only contain 38 chars
|
|
if (_tcslen (szClsid) > 40)
|
|
{
|
|
hr = E_INVALIDARG;
|
|
goto ExitHere;
|
|
}
|
|
|
|
TapiEnterCriticalSection (&TapiGlobals.CritSec);
|
|
// Is SCP for this szClsid already created (in array)?
|
|
for (i = 0; i < gProxyScps.dwUsedEntries; ++i)
|
|
{
|
|
if (_tcsicmp (
|
|
gProxyScps.aEntries[i].szClsid,
|
|
szClsid
|
|
) == 0)
|
|
{
|
|
fExists = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// If already exists, inc the ref count
|
|
if (fExists)
|
|
{
|
|
gProxyScps.aEntries[i].dwRefCount++;
|
|
}
|
|
// If not exists, create the new SCP and cache it
|
|
else
|
|
{
|
|
LPTSTR pBindByGuidStr;
|
|
|
|
hr = CreateProxySCP (szClsid, &pBindByGuidStr);
|
|
if (FAILED (hr))
|
|
{
|
|
TapiLeaveCriticalSection (&TapiGlobals.CritSec);
|
|
goto ExitHere;
|
|
}
|
|
|
|
if (gProxyScps.dwUsedEntries >= gProxyScps.dwTotalEntries)
|
|
{
|
|
// Increase the size
|
|
PROXY_SCP_ENTRY * pNew;
|
|
|
|
pNew = (PPROXY_SCP_ENTRY) ServerAlloc (
|
|
sizeof(PROXY_SCP_ENTRY) * (gProxyScps.dwTotalEntries + 16)
|
|
);
|
|
if (pNew == NULL)
|
|
{
|
|
hr = LINEERR_NOMEM;
|
|
ServerFree (pBindByGuidStr);
|
|
TapiLeaveCriticalSection (&TapiGlobals.CritSec);
|
|
goto ExitHere;
|
|
}
|
|
CopyMemory (
|
|
pNew,
|
|
gProxyScps.aEntries,
|
|
sizeof(PROXY_SCP_ENTRY) * gProxyScps.dwTotalEntries
|
|
);
|
|
ServerFree (gProxyScps.aEntries);
|
|
gProxyScps.aEntries = pNew;
|
|
gProxyScps.dwTotalEntries += 16;
|
|
}
|
|
i = gProxyScps.dwUsedEntries++;
|
|
_tcscpy (gProxyScps.aEntries[i].szClsid, szClsid);
|
|
_tcscpy (gProxyScps.aEntries[i].szObjGuid, pBindByGuidStr);
|
|
gProxyScps.aEntries[i].dwRefCount = 1;
|
|
ServerFree (pBindByGuidStr);
|
|
}
|
|
TapiLeaveCriticalSection (&TapiGlobals.CritSec);
|
|
|
|
ExitHere:
|
|
return hr;
|
|
}
|
|
|
|
HRESULT OnProxyLineClose (
|
|
LPTSTR szClsid
|
|
)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
BOOL fExists = FALSE;
|
|
DWORD i;
|
|
|
|
// Skip beginning/trailing white space
|
|
while (*szClsid == TEXT(' ') || *szClsid == TEXT('\t'))
|
|
++ szClsid;
|
|
// A valid CLSID string should only contain 38 chars
|
|
if (_tcslen (szClsid) > 40)
|
|
{
|
|
hr = E_INVALIDARG;
|
|
goto ExitHere;
|
|
}
|
|
|
|
TapiEnterCriticalSection (&TapiGlobals.CritSec);
|
|
|
|
// Is SCP for this szClsid already created (in array)?
|
|
for (i = 0; i < gProxyScps.dwUsedEntries; ++i)
|
|
{
|
|
if (_tcsicmp (
|
|
gProxyScps.aEntries[i].szClsid,
|
|
szClsid
|
|
) == 0)
|
|
{
|
|
fExists = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (fExists)
|
|
{
|
|
--gProxyScps.aEntries[i].dwRefCount;
|
|
// If ref count goes to zero, remove the SCP
|
|
if (gProxyScps.aEntries[i].dwRefCount == 0)
|
|
{
|
|
hr = RemoveProxySCP (gProxyScps.aEntries[i].szClsid);
|
|
if (i < gProxyScps.dwUsedEntries - 1)
|
|
{
|
|
MoveMemory (
|
|
gProxyScps.aEntries + i,
|
|
gProxyScps.aEntries + i + 1,
|
|
sizeof(PROXY_SCP_ENTRY) * (gProxyScps.dwUsedEntries - 1 - i)
|
|
);
|
|
}
|
|
--gProxyScps.dwUsedEntries;
|
|
}
|
|
}
|
|
|
|
TapiLeaveCriticalSection (&TapiGlobals.CritSec);
|
|
|
|
ExitHere:
|
|
return hr;
|
|
}
|
|
|