From fd2bbf9a09aa7a13bd8a43db351b9153e5a4b7ab Mon Sep 17 00:00:00 2001
From: mickeyl <mickeyl>
Date: Sat, 01 May 2004 16:15:05 +0000
Subject: - 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
---
(limited to 'noncore/net/wellenreiter')

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
@@ -1,5 +1,8 @@
 2004-??-??	Michael Lauer		<mickey@Vanille.de>
 
+	* 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.
 	* Added a View submenu. Added actions to expand and collapse all items.
 	* Switched to a (hopefully) more reliable method reading from gpsd.
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
@@ -22,7 +22,7 @@
 - enable multiple packet sources
   - infrared
   - bluetooth
-  - usb?
+  - usb
 
 - define packet structure in a metalanguage and generate
   the actual parsing code (hmmm)
@@ -36,7 +36,7 @@
 
 - enable sniffing in wired networks
 
-- fix autodetection (interface name)
+- fix autodetection (the interface name is not selected correctly)
 
 - use ethtool IOCTLs (if present)
 
@@ -73,5 +73,3 @@
 	# $DateGMT: 2004-02-07
 	N 41.1008009    W 8.3893034     ( Porceven )    BBS     ( 00:a0:f8:41:91:63 )   22:32:39 (GMT)  [ 21 177 156 ]
 
-- 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
@@ -58,6 +58,9 @@ using namespace Opie::Ui;
 #include <string.h>
 #include <sys/types.h>
 #include <stdlib.h>
+#include <signal.h>
+
+Wellenreiter* Wellenreiter::instance = 0;
 
 Wellenreiter::Wellenreiter( QWidget* parent )
     : WellenreiterBase( parent, 0, 0 ),
@@ -87,22 +90,53 @@ Wellenreiter::Wellenreiter( QWidget* parent )
 
     QTimer::singleShot( 1000, this, SLOT( initialTimer() ) );
 
+    registerSignalHandler();
 }
 
 
 Wellenreiter::~Wellenreiter()
 {
     delete pcap;
+    //unregisterSignalHandler();
 }
 
 
 void Wellenreiter::initialTimer()
 {
-    odebug << "Wellenreiter::preloading manufacturer database..." << oendl;
+    odebug << "preloading manufacturer database..." << oendl;
     OManufacturerDB::instance();
 }
 
 
+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 )
 {
     configwindow = cw;
@@ -502,7 +536,7 @@ void Wellenreiter::startClicked()
     if ( ( interface == "" ) || ( cardtype == 0 ) )
     {
         QMessageBox::information( this, "Wellenreiter II",
-                                  tr( "Your device is not\nproperly configured. Please reconfigure!" ) );
+                                  tr( "No device configured.\nPlease reconfigure!" ) );
         return;
     }
 
@@ -532,6 +566,16 @@ void Wellenreiter::startClicked()
                                 tr( "Can't bring interface '%1' up:\n" ).arg( iface->name() ) + strerror( errno ) );
             return;
         }
+
+        // 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;
+        }
     }
     // set monitor mode
     bool usePrism = configwindow->usePrismHeader();
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
@@ -20,6 +20,8 @@
 #include <opie2/odevice.h>
 #endif
 
+#include <signal.h>
+
 class QTimerEvent;
 class QPixmap;
 namespace Opie {namespace Net {class OPacket;}}
@@ -54,6 +56,8 @@ class Wellenreiter : public WellenreiterBase {
 
   public:
     bool sniffing;
+    static Wellenreiter* instance;
+    static void signalHandler( int sig );
 
   protected:
     virtual void timerEvent( QTimerEvent* );
@@ -86,6 +90,7 @@ class Wellenreiter : public WellenreiterBase {
     void doAction( const QString& action, const QString& protocol, Opie::Net::OPacket* p );
     QObject* childIfToParse( Opie::Net::OPacket* p, const QString& protocol );
     bool checkDumpPacket( Opie::Net::OPacket* p );
+    void registerSignalHandler();
 
   private:
     #ifdef QWS
--
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