Packets: Fix VariantParser invalid parser access bug

[senf.git] / Utils / Exception.cc

diff --git a/Utils/Exception.cc b/Utils/Exception.cc
index 86eaef1..b2c750f 100644 (file)
--- a/Utils/Exception.cc
+++ b/Utils/Exception.cc
@@ -1,9 +1,9 @@
 // $Id$
 //
 // Copyright (C) 2006
-// Fraunhofer Institut fuer offene Kommunikationssysteme (FOKUS)
-// Kompetenzzentrum fuer Satelitenkommunikation (SatCom)
-//     Stefan Bund <stefan.bund@fokus.fraunhofer.de>
+// Fraunhofer Institute for Open Communication Systems (FOKUS)
+// Competence Center NETwork research (NET), St. Augustin, GERMANY
+//     Stefan Bund <g0dil@berlios.de>
 //
 // This program is free software; you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -27,44 +27,57 @@
 //#include "Exception.ih"
 
 // Custom includes
-#include <cstring>
+#include <execinfo.h>
 #include <sstream>
+#include "../config.hh"
+#include "Backtrace.hh"
 
 #define prefix_
 ///////////////////////////////cc.p////////////////////////////////////////
 
-prefix_ void senf::throwErrno(std::string const & where, int code)
+///////////////////////////////////////////////////////////////////////////
+// senf::Exception
+
+#ifdef SENF_DEBUG
+prefix_ void senf::ExceptionMixin::addBacktrace()
 {
-#ifndef SENF_NO_ERRNOEXC
-    switch (code) {
+    void * entries[SENF_DEBUG_BACKTRACE_NUMCALLERS];
+    unsigned nEntries( ::backtrace(entries, SENF_DEBUG_BACKTRACE_NUMCALLERS) );
 
-    // BOOST_PP_REPEAT is limited to 256 repetitions. The max errno value I found in any header file
-    // was somewhere around 530 or so. I assume going to 1024 will be good enough. This explicit
-    // code will be optimized into a jump table by g++ (which is more efficient than trying to do
-    // the table oneself)
+    std::stringstream ss;
+    ss << "\nException at\n";
+    formatBacktrace(ss, entries, nEntries);
+    ss << "-- \n" << message_;
+    message_ = ss.str();
+}
+#endif
 
-#   define ExceptionCase(z, n, data) case n: throw ErrnoException<n>(where);
-    BOOST_PP_REPEAT(256, ExceptionCase, _) ;
-#   undef ExceptionCase
+/////////////////////////////////////////////////////////////////////////// 
+// senf::Exception
 
-#   define ExceptionCase(z, n, data) case 256+n: throw ErrnoException<256+n>(where);
-    BOOST_PP_REPEAT(256, ExceptionCase, _) ;
-#   undef ExceptionCase
+prefix_ senf::Exception::~Exception()
+    throw()
+{}
 
-#   define ExceptionCase(z, n, data) case 512+n: throw ErrnoException<512+n>(where);
-    BOOST_PP_REPEAT(256, ExceptionCase, _) ;
-#   undef ExceptionCase
+prefix_ char const * senf::Exception::what()
+    const throw()
+{
+    return message().c_str();
+}
 
-#   define ExceptionCase(z, n, data) case 768+n: throw ErrnoException<768+n>(where);
-    BOOST_PP_REPEAT(256, ExceptionCase, _) ;
-#   undef ExceptionCase
+///////////////////////////////////////////////////////////////////////////
+// senf::SystemException
 
-    default:
-        throw SystemException(where, code);
-    }
-#else 
-    throw SystemException(where, code);
-#endif
+prefix_ void senf::SystemException::init(std::string const & descr, int code
+                                         _SENF_EXC_DEBUG_ARGS_ND)
+{
+    code_ = code;
+#   ifdef SENF_DEBUG
+    if (file && line)
+        (*this) << "Exception at " << file << ":" << line << "\n";
+#   endif
+    (*this) << "[" << errorString() << "]";
+    if (! descr.empty()) (*this) << " " << descr;
 }
 
 ///////////////////////////////cc.e////////////////////////////////////////