1 files changed, 59 insertions, 0 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
@@ -17,12 +17,26 @@
 #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 );
@@ -31,10 +45,55 @@ int main( int argc, char **argv )
     #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;
 }