- be really paranoid about wireless extension versions for compile time vs. run time

- register handlers for SIGSEGV and SIGBUG to emergency-close the capture file

4 files changed, 56 insertions, 6 deletions

diff --git a/noncore/net/wellenreiter/ChangeLog b/noncore/net/wellenreiter/ChangeLog
index fdc8aa7..b59f9f9 100644
--- a/noncore/net/wellenreiter/ChangeLog
+++ b/noncore/net/wellenreiter/ChangeLog
@@ -2,2 +2,5 @@
 
+	* Registered a signal handler. We're now trying to gracefully exit and emergency close capture files.
+          This should allow reproducing failures.
+	* Added sanity check for compile time vs. run time Wireless Extension versions.
 	* Added sanity check isPresent(interface) before starting the engine.
diff --git a/noncore/net/wellenreiter/TODO b/noncore/net/wellenreiter/TODO
index 0640d23..f0a193d 100644
--- a/noncore/net/wellenreiter/TODO
+++ b/noncore/net/wellenreiter/TODO
@@ -24,3 +24,3 @@
   - bluetooth
-  - usb?
+  - usb
 
@@ -38,3 +38,3 @@
 
-- fix autodetection (interface name)
+- fix autodetection (the interface name is not selected correctly)
 
@@ -75,3 +75 @@
 
-- add SIGSEGV handler for emergency closing the capture file etc.
-
diff --git a/noncore/net/wellenreiter/gui/wellenreiter.cpp b/noncore/net/wellenreiter/gui/wellenreiter.cpp
index 40cd105..12b3978 100644
--- a/noncore/net/wellenreiter/gui/wellenreiter.cpp
+++ b/noncore/net/wellenreiter/gui/wellenreiter.cpp
@@ -60,2 +60,5 @@ using namespace Opie::Ui;
 #include <stdlib.h>
+#include <signal.h>
+
+Wellenreiter* Wellenreiter::instance = 0;
 
@@ -89,2 +92,3 @@ Wellenreiter::Wellenreiter( QWidget* parent )
 
+    registerSignalHandler();
 }
@@ -95,2 +99,3 @@ Wellenreiter::~Wellenreiter()
     delete pcap;
+    //unregisterSignalHandler();
 }
@@ -100,3 +105,3 @@ void Wellenreiter::initialTimer()
 {
-    odebug << "Wellenreiter::preloading manufacturer database..." << oendl;
+    odebug << "preloading manufacturer database..." << oendl;
     OManufacturerDB::instance();
@@ -105,2 +110,31 @@ void Wellenreiter::initialTimer()
 
+void Wellenreiter::signalHandler( int sig )
+{
+    oerr << "Aye! Received SIGSEGV or SIGBUS! Trying to exit gracefully..." << oendl;
+    if ( Wellenreiter::instance->sniffing )
+    {
+        Wellenreiter::instance->pcap->close();
+        Wellenreiter::instance->stopClicked();
+    }
+    oerr << "Phew. Seemed to work." << oendl;
+    ::exit( -1 );
+}
+
+
+void Wellenreiter::registerSignalHandler()
+{
+    Wellenreiter::instance = this;
+    struct sigaction action;
+
+    action.sa_handler = Wellenreiter::signalHandler;
+    if (sigemptyset(&action.sa_mask))
+        oerr << "sigemptyset() failure:" << strerror( errno ) << oendl;
+    if (sigaction(SIGSEGV, &action, NULL))
+        oerr << "can't set up a signal handler for SIGSEGV:" << strerror( errno ) << oendl;
+    if (sigaction(SIGBUS, &action, NULL))
+        oerr << "can't set up a signal handler for SIGBUS:" << strerror( errno ) << oendl;
+    odebug << "signal handlers setup." << oendl;
+}
+
+
 void Wellenreiter::setConfigWindow( WellenreiterConfigWindow* cw )
@@ -504,3 +538,3 @@ void Wellenreiter::startClicked()
         QMessageBox::information( this, "Wellenreiter II",
-                                  tr( "Your device is not\nproperly configured. Please reconfigure!" ) );
+                                  tr( "No device configured.\nPlease reconfigure!" ) );
         return;
@@ -534,2 +568,12 @@ void Wellenreiter::startClicked()
         }
+
+        // check if wireless extension version matches
+        if ( ONetwork::wirelessExtensionCompileVersion() != iface->wirelessExtensionDriverVersion() )
+        {
+            QMessageBox::critical( this, "Wellenreiter II", tr( "<p>The Wireless Extension Versions<br>are not matching!<p>"
+                                    "  Wellenreiter II : WE V%1<br>Interface driver: WE V%2" )
+                                    .arg( QString::number( ONetwork::wirelessExtensionCompileVersion() ) )
+                                    .arg( QString::number( iface->wirelessExtensionDriverVersion() ) ) );
+            return;
+        }
     }
diff --git a/noncore/net/wellenreiter/gui/wellenreiter.h b/noncore/net/wellenreiter/gui/wellenreiter.h
index f609ef4..32e5690 100644
--- a/noncore/net/wellenreiter/gui/wellenreiter.h
+++ b/noncore/net/wellenreiter/gui/wellenreiter.h
@@ -22,2 +22,4 @@
 
+#include <signal.h>
+
 class QTimerEvent;
@@ -56,2 +58,4 @@ class Wellenreiter : public WellenreiterBase {
     bool sniffing;
+    static Wellenreiter* instance;
+    static void signalHandler( int sig );
 
@@ -88,2 +92,3 @@ class Wellenreiter : public WellenreiterBase {
     bool checkDumpPacket( Opie::Net::OPacket* p );
+    void registerSignalHandler();