1 files changed, 130 insertions, 0 deletions

diff --git a/example/ntp.cpp b/example/ntp.cpp
new file mode 100644
index 0000000..5357cae
--- a/dev/null
+++ b/example/ntp.cpp
@@ -0,0 +1,130 @@
+#include "ntp.h"
+#include <qpushbutton.h>
+#include <qregexp.h>
+#include <qlabel.h>
+#include <qlineedit.h>
+#include <qmultilineedit.h>
+#include <opie/oprocess.h>
+#include <qpe/config.h>
+#include <qpe/global.h>
+#include <qpe/timeconversion.h>
+#include <qpe/tzselect.h>
+#include <qpe/timestring.h>
+#include <qpe/qpedialog.h>
+#include <sys/time.h>
+#include <time.h>
+#include <stdlib.h>
+
+
+Ntp::Ntp( QWidget* parent,  const char* name, WFlags fl )
+    : NtpBase( parent, name, fl )
+{
+        Config cfg("ntp",Config::User);
+  cfg.setGroup("settings");
+         _maxOffset = cfg.readNumEntry("maxOffset",5);
+  _minLookupDiff = cfg.readNumEntry("minLookupDiff",10);
+  LineEditNtpServer->setText( cfg.readEntry("ntpServer") );
+         ntpProcess = new OProcess( );
+  connect ( ntpProcess, SIGNAL(receivedStdout(OProcess*,char*,int)),
+                                        this, SLOT(getNtpOutput(OProcess*,char*,int)));
+  connect ( ntpProcess, SIGNAL(processExited(OProcess*)),
+                                        this, SLOT(ntpFinished(OProcess*)));
+  connect(runNtp, SIGNAL(clicked()), this, SLOT(slotRunNtp()));
+         _nextCorrection = new QTimer( this );
+    connect( _nextCorrection, SIGNAL(timeout()), SLOT(correctClock()) );
+  slotRunNtp();
+}
+
+Ntp::~Ntp()
+{
+        Config cfg("ntp",Config::User);
+  cfg.setGroup("settings");
+  cfg.writeEntry("ntpServer", LineEditNtpServer->text());
+}
+
+
+void Ntp::slotRunNtp()
+{
+        TextLabelStartTime->setText(QDateTime::currentDateTime().toString());
+        ntpProcess->clearArguments();
+        *ntpProcess << "ntpdate" << LineEditNtpServer->text();
+        bool ret = ntpProcess->start(OProcess::NotifyOnExit,OProcess::AllOutput);
+  if ( !ret ) {
+     qDebug("Error while executing ntp");
+     outPut->append("\nError while executing\n\n");
+  }
+}
+
+void  Ntp::getNtpOutput(OProcess *proc, char *buffer, int buflen)
+{
+  QString lineStr, lineStrOld;
+  lineStr = buffer;
+  lineStr=lineStr.left(buflen);
+  if (lineStr!=lineStrOld)
+  {
+                outPut->append(lineStr);
+                 _ntpOutput += lineStr;
+  }
+  lineStrOld = lineStr;
+}
+
+void  Ntp::ntpFinished(OProcess*)
+{
+        Config cfg("ntp",Config::User);
+  cfg.setGroup("lookups");
+  int lastLookup = cfg.readNumEntry("time",0);
+  int lookupCount = cfg.readNumEntry("count",-1);
+  int time = TimeConversion::toUTC( QDateTime::currentDateTime() );
+  cfg.writeEntry("time", time);
+         
+  float timeShift = getTimeShift();
+         int secsSinceLast = time - lastLookup;
+  TextLabelNewTime->setText(QDateTime::currentDateTime().toString());
+  if ( lastLookup > 0 && secsSinceLast > 60*_minLookupDiff)
+  {
+          lookupCount++;
+           cfg.writeEntry("count",lookupCount);
+          cfg.setGroup("lookup_"+QString::number(lookupCount));
+    _shiftPerSec =  timeShift / secsSinceLast;
+    float nextCorr = _maxOffset / _shiftPerSec;
+           qDebug("secs since last lookup %i", secsSinceLast);qDebug("timeshift since last lookup %f", timeShift);qDebug("timeshift since per sec %f", _shiftPerSec);qDebug("in %f secs the time will be shifted by %i", nextCorr,_maxOffset);
+                cfg.writeEntry("secsSinceLast",secsSinceLast);
+                cfg.writeEntry("timeShift",QString::number(timeShift));
+  }
+}
+
+void Ntp::correctClock()
+{
+        qDebug("current time: %s",QDateTime::currentDateTime().toString().latin1());
+        Config cfg("ntp",Config::User);
+  cfg.setGroup("correction");
+         int lastTime = cfg.readNumEntry("time",0);
+  int now = TimeConversion::toUTC( QDateTime::currentDateTime() );
+  int corr = int((now - lastTime) * _shiftPerSec);
+        outPut->append( "time will be shifted by "+QString::number(corr)+ "secs");
+  struct timeval myTv;
+  myTv.tv_sec = TimeConversion::toUTC( QDateTime::currentDateTime().addSecs(corr) );
+  myTv.tv_usec = 0;
+
+  if ( myTv.tv_sec != -1 )
+      ::settimeofday( &myTv, 0 );
+  Global::writeHWClock();
+  cfg.writeEntry("time",now);
+        qDebug("current time: %s",QDateTime::currentDateTime().toString().latin1());
+}
+
+float Ntp::getTimeShift()
+{
+        QString _offset = "offset";
+  QString _sec = "sec";
+  QRegExp _reOffset = QRegExp(_offset);
+  QRegExp _reEndOffset = QRegExp(_sec);
+  int posOffset = _reOffset.match( _ntpOutput );
+  int posEndOffset = _reEndOffset.match( _ntpOutput, posOffset );
+  posOffset += _offset.length() + 1;
+  QString diff = _ntpOutput.mid(posOffset, posEndOffset-posOffset-1);
+  qDebug("%s", _ntpOutput.latin1());
+  qDebug("diff = >%s<",diff.latin1());
+  TextLabelTimeShift->setText(diff);
+  return diff.toFloat();
+}
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