add sanity (non-root & dhcp running) checks for startup phase

3 files changed, 72 insertions, 2 deletions

diff --git a/noncore/net/wellenreiter/gui/main.cpp b/noncore/net/wellenreiter/gui/main.cpp
index 8d4ef57..03da135 100644
--- a/noncore/net/wellenreiter/gui/main.cpp
+++ b/noncore/net/wellenreiter/gui/main.cpp
@@ -15,26 +15,85 @@
 
 #include "mainwindow.h"
 #ifdef QWS
 #include <opie2/oapplication.h>
 #else
 #include <qapplication.h>
 #endif
 
+#include <qmessagebox.h>
+#include <qstringlist.h>
+
+// ==> OProcess
+#include <qdir.h>
+#include <qfileinfo.h>
+#include <qregexp.h>
+#include <qtextstream.h>
+
+#include <errno.h>
+#include <signal.h>
+#include <string.h>
+#include <unistd.h>
+
 int main( int argc, char **argv )
 {
     #ifdef QWS
     OApplication a( argc, argv, "Wellenreiter II" );
     #else
     QApplication a( argc, argv );
     #endif
     WellenreiterMainWindow* w = new WellenreiterMainWindow();
     #ifdef QWS
     a.showMainWidget( w );
     #else
     a.setMainWidget( w );
     w->show();
     #endif
+
+    a.processEvents(); // show the window before doing the safety checks
+    int result = -1;
+
+    // root check
+    if ( getuid() )
+    {
+        qWarning( "Wellenreiter: trying to run as non-root!" );
+        result = QMessageBox::warning( w, " - Wellenreiter II -  (non-root)", "You have started Wellenreiter II\n"
+          "as non-root. You will have\nonly limited functionality.\nProceed anyway?",
+          QMessageBox::Yes, QMessageBox::No );
+        if ( result == QMessageBox::No ) return -1;
+    }
+
+    // dhcp check - NOT HERE! This really belongs as a static member to OProcess
+    // and I want to call it like that: if ( OProcess::isRunning( QString& ) ) ...
+
+    QString line;
+    QDir d = QDir( "/proc" );
+    QStringList dirs = d.entryList( QDir::Dirs );
+    QStringList::Iterator it;
+    for ( it = dirs.begin(); it != dirs.end(); ++it )
+    {
+        //qDebug( "next entry: %s", (const char*) *it );
+        QFile file( "/proc/"+*it+"/cmdline" );
+        file.open( IO_ReadOnly );
+        if ( !file.isOpen() ) continue;
+        QTextStream t( &file );
+        line = t.readLine();
+        //qDebug( "cmdline = %s", (const char*) line );
+        if ( line.contains( "dhcp" ) ) break;
+    }
+    if ( line.contains( "dhcp" ) )
+    {
+        qWarning( "Wellenreiter: found dhcp process #%d", (*it).toInt() );
+        result = QMessageBox::warning( w, " - Wellenreiter II -  (dhcp)", "You have a dhcp client running.\n"
+          "This can severly limit scanning!\nShould I kill it for you?",
+          QMessageBox::Yes, QMessageBox::No );
+        if ( result == QMessageBox::Yes )
+        {
+            if ( -1 == ::kill( (*it).toInt(), SIGTERM ) )
+                qWarning( "Wellenreiter: can't kill process (%s)", result, strerror( errno ) );
+        }
+    }
+
     a.exec();
     delete w;
     return 0;
 }
diff --git a/noncore/net/wellenreiter/gui/wellenreiter.cpp b/noncore/net/wellenreiter/gui/wellenreiter.cpp
index be2a86e..b4b6aa3 100644
--- a/noncore/net/wellenreiter/gui/wellenreiter.cpp
+++ b/noncore/net/wellenreiter/gui/wellenreiter.cpp
@@ -30,16 +30,17 @@ using namespace Opie;
 
 // Qt
 
 #include <qcheckbox.h>
 #include <qcombobox.h>
 #include <qpushbutton.h>
 #include <qlineedit.h>
 #include <qmessagebox.h>
+#include <qregexp.h>
 #include <qspinbox.h>
 #include <qtoolbutton.h>
 #include <qmainwindow.h>
 
 // Standard
 
 #include <assert.h>
 #include <errno.h>
@@ -320,17 +321,21 @@ void Wellenreiter::startClicked()
         }
     }
 
     // open pcap and start sniffing
     if ( cardtype != DEVTYPE_FILE )
     {
         if ( configwindow->writeCaptureFile->isEnabled() )
         {
-            pcap->open( interface, configwindow->captureFileName->text() );
+            QString dumpname( configwindow->captureFileName->text() );
+            dumpname.append( '-' );
+            dumpname.append( QTime::currentTime().toString().replace( QRegExp( ":" ), "-" ) );
+            dumpname.append( ".wellenreiter" );
+            pcap->open( interface, dumpname );
         }
         else
         {
             pcap->open( interface );
         }
     }
     else
     {
@@ -360,16 +365,22 @@ void Wellenreiter::startClicked()
     {
         // start timer for reading packets
         startTimer( 100 );
     }
 
     logwindow->log( "(i) Started Scanning." );
     sniffing = true;
     emit( startedSniffing() );
+    if ( cardtype != DEVTYPE_FILE ) channelHopped( 6 ); // set title
+    else
+    {
+        assert( parent() );
+        ( (QMainWindow*) parent() )->setCaption( "Wellenreiter II - replaying capture file..." );
+    }
 }
 
 
 void Wellenreiter::timerEvent( QTimerEvent* )
 {
     qDebug( "Wellenreiter::timerEvent()" );
     OPacket* p = pcap->next();
     receivePacket( p );
diff --git a/noncore/net/wellenreiter/gui/wellenreiterbase.cpp b/noncore/net/wellenreiter/gui/wellenreiterbase.cpp
index 245b9fc..9745069 100644
--- a/noncore/net/wellenreiter/gui/wellenreiterbase.cpp
+++ b/noncore/net/wellenreiter/gui/wellenreiterbase.cpp
@@ -126,17 +126,17 @@ WellenreiterBase::WellenreiterBase( QWidget* parent,  const char* name, WFlags f
     TextLabel1_4_2->setAlignment( int( QLabel::AlignCenter ) );
 
     aboutLayout->addWidget( TextLabel1_4_2, 1, 0 );
 
 #ifdef QWS
     TabWidget->addTab( ap, "wellenreiter/networks", tr( "Nets" ) );
     TabWidget->addTab( logwindow, "wellenreiter/log", tr( "Log" ) );
     TabWidget->addTab( hexwindow, "wellenreiter/hex", tr( "Hex" ) );
-    TabWidget->addTab( statwindow, "wellenreiter/stat", tr( "Stats" ) );
+    TabWidget->addTab( statwindow, "wellenreiter/stat", tr( "Stat" ) );
     TabWidget->addTab( about, "wellenreiter/about", tr( "About" ) );
 #else
     TabWidget->addTab( ap, /* "wellenreiter/networks", */ tr( "Networks" ) );
     TabWidget->addTab( logwindow, /* "wellenreiter/log", */ tr( "Log" ) );
     TabWidget->addTab( hexwindow, /* "wellenreiter/hex", */ tr( "Hex" ) );
     TabWidget->addTab( statwindow, /* "wellenreiter/hex", */ tr( "Stat" ) );
     TabWidget->addTab( about, /* "wellenreiter/about", */ tr( "About" ) );
 #endif