win32.cxx

windows mobile phone source code

/*
 * win32.cxx
 *
 * Miscellaneous implementation of classes for Win32
 *
 * Portable Windows Library
 *
 * Copyright (c) 1993-1998 Equivalence Pty. Ltd.
 *
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 * the License for the specific language governing rights and limitations
 * under the License.
 *
 * The Original Code is Portable Windows Library.
 *
 * The Initial Developer of the Original Code is Equivalence Pty. Ltd.
 *
 * Portions are Copyright (C) 1993 Free Software Foundation, Inc.
 * All Rights Reserved.
 *
 * Contributor(s): ______________________________________.
 *
 * $Log: win32.cxx,v $
 * Revision 1.117  2001/12/08 00:22:37  robertj
 * Prevented assert if doing SetUserName() with empty string.
 *
 * Revision 1.116  2001/11/23 06:59:00  robertj
 * Added PProcess::SetUserName() function for effective user changes.
 *
 * Revision 1.115  2001/10/26 04:20:25  craigs
 * Changed housekeeping thread to be Normal priority to avoide starvation
 * of PTimer dependent threads
 *
 * Revision 1.114  2001/10/23 05:42:48  robertj
 * Fixed bug in retry loop waiting for termination, applies only to heavily
 *   laoded Win98 class machines.
 *
 * Revision 1.113  2001/10/07 16:05:59  yurik
 * Removed MFC dependency
 *
 * Revision 1.112  2001/09/11 03:27:46  robertj
 * Improved error processing on high level protocol failures, usually
 *   caused by unexpected shut down of a socket.
 *
 * Revision 1.111  2001/09/10 02:51:23  robertj
 * Major change to fix problem with error codes being corrupted in a
 *   PChannel when have simultaneous reads and writes in threads.
 *
 * Revision 1.110  2001/08/07 03:20:39  robertj
 * Fixed close of DLL so flagged as closed, thanks Stefan Ditscheid.
 *
 * Revision 1.109  2001/07/09 01:35:48  robertj
 * Added name to housekeeper thread.
 *
 * Revision 1.108  2001/06/01 04:03:05  yurik
 * Removed dependency on obsolete function
 *
 * Revision 1.107  2001/05/29 00:49:18  robertj
 * Added ability to put in a printf %x in thread name to get thread object
 *   address into user settable thread name.
 *
 * Revision 1.106  2001/05/10 15:21:30  yurik
 * Fixed bug in PSemaphore::Signal(), courtesy of Dave Cassel, [e-mail].
 * Also Refined thread priorities for WinCE.
 *
 * Revision 1.105  2001/05/04 05:42:23  yurik
 * GetUserName for Pocket PC (Windows CE 3.0) implemented
 *
 * Revision 1.104  2001/04/26 06:07:34  yurik
 * UI improvements
 *
 * Revision 1.103  2001/04/15 03:38:42  yurik
 * Removed shutdown flag. Use IsTerminated() instead
 *
 * Revision 1.102  2001/04/14 04:54:03  yurik
 * Added process shutdown flag
 *
 * Revision 1.101  2001/03/24 05:52:42  robertj
 * Added Windows 98 and ME to GetOSName()
 * Added build number to GetOSVersion()
 *
 * Revision 1.100  2001/03/03 00:55:02  yurik
 * Proper fix for filetime routines used in guid calc done for WinCE
 *
 * Revision 1.99  2001/02/13 06:55:21  robertj
 * Fixed problem with operator= in PDirectory class, part of larger change previously made.
 *
 * Revision 1.98  2001/01/30 06:37:52  yurik
 * Modification submitted by Dave Cassel, [e-mail]
 * DC: ARM, x86em were content without this change, but SH4 insisted
 *
 * Revision 1.97  2001/01/29 01:19:32  robertj
 * Fixed Win32 compile broken by WinCE changes.
 *
 * Revision 1.96  2001/01/28 01:50:46  yurik
 * WinCE port-related. System version check and new semaphore code
 *
 * Revision 1.95  2001/01/24 06:44:35  yurik
 * Windows CE port-related changes
 *
 * Revision 1.94  2000/11/02 01:31:11  robertj
 * Fixed problem with PSemaphore::WillBlock actually locking semaphore.
 *
 * Revision 1.93  2000/10/20 05:31:53  robertj
 * Added function to change auto delete flag on a thread.
 *
 * Revision 1.92  2000/08/25 08:07:48  robertj
 * Added Windows 2000 to operating system reporting.
 *
 * Revision 1.91  2000/04/05 02:50:18  robertj
 * Added microseconds to PTime class.
 *
 * Revision 1.90  2000/03/29 04:31:59  robertj
 * Removed assertion on terminating terminated thread, this is really OK.
 *
 * Revision 1.89  2000/03/04 08:07:27  robertj
 * Fixed problem with window not appearing when assert on GUI based win32 apps.
 *
 * Revision 1.88  2000/02/29 12:26:15  robertj
 * Added named threads to tracing, thanks to Dave Harvey
 *
 * Revision 1.87  2000/01/06 14:09:42  robertj
 * Fixed problems with starting up timers,losing up to 10 seconds
 *
 * Revision 1.86  1999/11/18 02:22:53  robertj
 * Fixed bug in GetErrorText() occasionally returning incorrect empty string, thanks Ulrich Findeisen
 *
 * Revision 1.85  1999/07/06 13:37:07  robertj
 * Fixed bug in PThread::IsSuspended(), returned exactly the opposite state!
 *
 * Revision 1.84  1999/07/06 04:46:01  robertj
 * Fixed being able to case an unsigned to a PTimeInterval.
 * Improved resolution of PTimer::Tick() to be millisecond accurate.
 *
 * Revision 1.83  1999/03/09 10:30:19  robertj
 * Fixed ability to have PMEMORY_CHECK on/off on both debug/release versions.
 *
 * Revision 1.82  1999/03/09 08:19:15  robertj
 * Adjustment found during documentation frenzy.
 *
 * Revision 1.81  1999/02/12 01:01:57  craigs
 * Fixed problem with linking static versions of libraries
 *
 * Revision 1.80  1999/01/30 14:28:25  robertj
 * Added GetOSConfigDir() function.
 *
 * Revision 1.79  1999/01/16 02:00:29  robertj
 * Added hardware description funtion.
 *
 * Revision 1.78  1998/12/04 10:10:47  robertj
 * Added virtual for determining if process is a service. Fixes linkage problem.
 *
 * Revision 1.77  1998/11/30 07:31:18  robertj
 * New directory structure
 * Fission of file into pipe.cxx, winserial.cxx and wincfg.cxx
 *
 * Revision 1.76  1998/11/26 10:35:08  robertj
 * Improved support of FAT32 and large NTFS volumes in GetFreeSpace().
 *
 * Revision 1.75  1998/11/20 03:17:19  robertj
 * Added thread WaitForTermination() function.
 *
 * Revision 1.74  1998/11/19 05:19:53  robertj
 * Bullet proofed WaitForMultipleObjects under 95.
 *
 * Revision 1.73  1998/11/02 10:07:20  robertj
 * Added capability of pip output to go to stdout/stderr.
 *
 * Revision 1.72  1998/10/31 12:50:47  robertj
 * Removed ability to start threads immediately, race condition with vtable (Main() function).
 * Rearranged PPipChannel functions to help with multi-platform-ness.
 *
 * Revision 1.71  1998/10/29 11:29:20  robertj
 * Added ability to set environment in sub-process.
 *
 * Revision 1.70  1998/10/28 00:59:12  robertj
 * Fixed problem when reading standard error from pipe channel, no terminating null on string.
 *
 * Revision 1.69  1998/10/26 09:11:31  robertj
 * Added ability to separate out stdout from stderr on pipe channels.
 *
 * Revision 1.68  1998/10/15 02:20:26  robertj
 * Added message for connection aborted error.
 *
 * Revision 1.67  1998/10/13 14:13:36  robertj
 * Removed uneeded heap allocation.
 *
 * Revision 1.66  1998/09/24 03:30:59  robertj
 * Added open software license.
 *
 * Revision 1.65  1998/09/18 13:56:20  robertj
 * Added support of REG_BINARY registry types in PConfig class.
 *
 * Revision 1.64  1998/08/20 06:05:28  robertj
 * Allowed Win32 class to be used in other compilation modules
 *
 * Revision 1.63  1998/04/01 01:52:42  robertj
 * Fixed problem with NoAutoDelete threads.
 *
 * Revision 1.62  1998/03/29 06:16:56  robertj
 * Rearranged initialisation sequence so PProcess descendent constructors can do "things".
 *
 * Revision 1.61  1998/03/27 10:52:39  robertj
 * Fixed crash bug in win95 OSR2 GetVolumeSpace().
 * Fixed error 87 problem with threads.
 * Fixed GetVolumeSpace() when UNC used.
 *
 * Revision 1.60  1998/03/20 03:19:49  robertj
 * Added special classes for specific sepahores, PMutex and PSyncPoint.
 *
 * Revision 1.59  1998/03/17 10:17:09  robertj
 * Fixed problem with viewing registry entries where the section ends with a \.
 *
 * Revision 1.58  1998/03/09 11:17:38  robertj
 * FAT32 compatibility
 *
 * Revision 1.57  1998/03/05 12:48:37  robertj
 * Fixed bug in get free space on volume.
 * Added cluster size.
 * MemCheck fixes.
 *
 * Revision 1.56  1998/02/16 00:10:45  robertj
 * Added function to open a URL in a browser.
 * Added functions to validate characters in a filename.
 *
 * Revision 1.55  1998/01/26 00:57:09  robertj
 * Fixed uninitialised source in PConfig when getting environment.
 *
 * Revision 1.54  1997/08/28 12:50:21  robertj
 * Fixed race condition in cleaning up threads on application termination.
 *
 * Revision 1.53  1997/08/21 13:27:41  robertj
 * Attempt to fix very slight possibility of endless loop in housekeeping thread.
 *
 * Revision 1.52  1997/08/21 12:44:56  robertj
 * Removed extension from DLL "short" name.
 *
 * Revision 1.51  1997/08/07 11:57:42  robertj
 * Added ability to get registry data from other applications and anywhere in system registry.
 *
 * Revision 1.50  1997/08/04 10:38:43  robertj
 * Fixed infamous error 87 assert failure in housekeeping thread.
 *
 * Revision 1.49  1997/07/14 11:47:22  robertj
 * Added "const" to numerous variables.
 *
 * Revision 1.48  1997/06/16 13:15:53  robertj
 * Added function to get a dyna-link libraries name.
 *
 * Revision 1.47  1997/06/08 04:42:41  robertj
 * Added DLL file extension string function.
 *
 * Revision 1.46  1997/03/28 04:36:30  robertj
 * Added assert for error in thread cleanup wait.
 *
 * Revision 1.45  1997/02/05 11:50:58  robertj
 * Changed current process function to return reference and validate objects descendancy.
 *
 * Revision 1.44  1997/01/12 04:24:16  robertj
 * Added function to get disk size and free space.
 *
 * Revision 1.43  1997/01/01 11:17:06  robertj
 * Added implementation for PPipeChannel::GetReturnCode and PPipeChannel::IsRunning
 *
 * Revision 1.44  1996/12/29 13:05:03  robertj
 * Added wait and abort for pipe channel commands.
 * Added setting of error codes on status error.
 *
 * Revision 1.43  1996/12/29 02:53:13  craigs
 * Added implementation for PPipeChannel::GetReturnCode and
 *   PPipeChannel::IsRunning
 *
 * Revision 1.42  1996/12/17 13:13:05  robertj
 * Fixed win95 support for registry security code,
 *
 * Revision 1.41  1996/12/17 11:00:28  robertj
 * Fixed register entry security access control lists.
 *
 * Revision 1.40  1996/11/16 10:52:48  robertj
 * Fixed bug in PPipeChannel test for open channel, win95 support.
 * Put time back to C function as run time library bug fixed now.
 *
 * Revision 1.39  1996/11/04 03:36:31  robertj
 * Added extra error message for UDP packet truncated.
 *
 * Revision 1.38  1996/10/26 01:42:51  robertj
 * Added more translations for winsock error codes to standard error codes.
 *
 * Revision 1.37  1996/10/14 03:11:25  robertj
 * Changed registry key so when reading only opens in ReadOnly mode.
 *
 * Revision 1.36  1996/10/08 13:03:47  robertj
 * Added new error messages.
 *
 * Revision 1.35  1996/08/08 10:03:43  robertj
 * Fixed static error text returned when no osError value.
 *
 * Revision 1.34  1996/07/27 04:05:31  robertj
 * Created static version of ConvertOSError().
 * Created static version of GetErrorText().
 * Changed thread creation to use C library function instead of direct WIN32.
 * Fixed bug in auto-deleting the housekeeping thread.
 *
 * Revision 1.33  1996/07/20 05:34:05  robertj
 * Fixed order of registry section tree traversal so can delete whole trees.
 *
 * Revision 1.32  1996/06/28 13:24:33  robertj
 * Fixed enumeration of sections to recurse into registry tree.
 *
 * Revision 1.31  1996/06/17 11:38:58  robertj
 * Fixed memory leak on termination of threads.
 *
 * Revision 1.30  1996/06/13 13:32:13  robertj
 * Rewrite of auto-delete threads, fixes Windows95 total crash.
 *
 * Revision 1.29  1996/06/10 09:54:35  robertj
 * Fixed Win95 compatibility for semaphores.
 *
 * Revision 1.28  1996/05/30 11:48:51  robertj
 * Fixed error on socket timeout to return "Timed Out".
 *
 * Revision 1.27  1996/05/23 10:05:36  robertj
 * Fixed bug in PConfig::GetBoolean().
 * Changed PTimeInterval millisecond access function so can get int64.
 * Moved service process code into separate module.
 *
 * Revision 1.26  1996/04/29 12:23:22  robertj
 * Fixed ability to access GDI stuff from subthreads.
 * Added function to return process ID.
 *
 * Revision 1.25  1996/04/17 12:09:30  robertj
 * Added service dependencies.
 * Started win95 support.
 *
 * Revision 1.24  1996/04/09 03:33:58  robertj
 * Fixed bug in incorrect report of timeout on socket read.
 *
 * Revision 1.23  1996/04/01 13:33:19  robertj
 * Fixed bug in install of service, incorrectly required installation before install.
 *
 * Revision 1.22  1996/03/31 09:10:33  robertj
 * Added use of "CurrentVersion" key in registry.
 * Added version display to service process.
 * Added another socket error text message.
 *
 * Revision 1.21  1996/03/12 11:31:39  robertj
 * Moved PProcess destructor to platform dependent code.
 * Fixed bug in deleting Event Viewer registry entry for service process.
 *
 * Revision 1.20  1996/03/10 13:16:49  robertj
 * Implemented system version functions.
 *
 * Revision 1.19  1996/03/04 13:07:33  robertj
 * Allowed for auto deletion of threads on termination.
 *
 * Revision 1.18  1996/02/25 11:15:29  robertj
 * Added platform dependent Construct function to PProcess.
 *
 * Revision 1.17  1996/02/25 03:12:48  robertj
 * Added consts to all GetXxxx functions in PConfig.
 * Fixed bug in PTime::GetTimeZone(), incorrect sign!
 * Fixed problem with PConfig get functions and their WIN32 types should be
 *    able to interchange strings and numbers.
 *
 * Revision 1.16  1996/02/19 13:53:21  robertj
 * Fixed error reporting for winsock classes.
 *
 * Revision 1.15  1996/02/15 14:54:06  robertj
 * Compensated for C library bug in time().
 *
 * Revision 1.14  1996/02/08 12:30:41  robertj
 * Time zone changes.
 * Added OS identification strings to PProcess.
 *
 * Revision 1.13  1996/01/28 02:56:56  robertj
 * Fixed bug in PFilePath functions for if path ends in a directory separator.
 * Made sure all directory separators are correct character in normalised path.
 *
 * Revision 1.12  1996/01/23 13:25:21  robertj
 * Added time zones.
 * Fixed bug if daylight savings indication.
 *
 * Revision 1.11  1996/01/02 12:58:33  robertj
 * Fixed copy of directories.
 * Changed process construction mechanism.
 * Made service process "common".
 *
 * Revision 1.10  1995/12/10 12:05:48  robertj
 * Changes to main() startup mechanism to support Mac.
 * Moved error code for specific WIN32 and MS-DOS versions.
 * Added WIN32 registry support for PConfig objects.
 * Added asserts in WIN32 semaphores.
 *
 * Revision 1.9  1995/11/21 11:53:24  robertj
 * Added timeout on semaphore wait.
 *
 * Revision 1.8  1995/10/14 15:13:04  robertj
 * Fixed bug in WIN32 service command line parameters.
 *
 * Revision 1.7  1995/08/24 12:42:33  robertj
 * Changed PChannel so not a PContainer.
 * Rewrote PSerialChannel::Read yet again so can break out of I/O.
 *
 * Revision 1.6  1995/07/02 01:26:52  robertj
 * Changed thread internal variables.
 * Added service process support for NT.
 *
 * Revision 1.5  1995/06/17 01:03:08  robertj
 * Added NT service process type.
 *
 * Revision 1.4  1995/06/04 12:48:52  robertj
 * Fixed bug in directory path creation.
 * Fixed bug in comms channel open error.
 *
 * Revision 1.3  1995/04/25 11:33:54  robertj
 * Fixed Borland compiler warnings.
 *
 * Revision 1.2  1995/03/22 13:56:18  robertj
 * Fixed directory handle value check for closing directory.
 *
// Revision 1.1  1995/03/14  12:45:20  robertj
// Initial revision
//
 */

#include <ptlib.h>

#include <process.h>
#include <ptlib/debstrm.h>

#define new PNEW

///////////////////////////////////////////////////////////////////////////////
// PTime

PTime::PTime()
{
  // Magic constant to convert epoch from 1601 to 1970
  static const PInt64 delta = ((PInt64)369*365+(369/4)-3)*24*60*60U;
  static const PInt64 scale = 10000000;

  PInt64 timestamp;

#ifndef _WIN32_WCE
  GetSystemTimeAsFileTime((LPFILETIME)&timestamp);
#else
  SYSTEMTIME SystemTime;
  GetSystemTime(&SystemTime);
  SystemTimeToFileTime(&SystemTime, (LPFILETIME)&timestamp);