DecodeSignal: Prevent out-of-range exception

[pulseview.git] / main.cpp

diff --git a/main.cpp b/main.cpp
index e3bf8835c665b60b04d5c7302ff8b9ad3432a7c9..cebeca378c69eaf1001229ff7340ae33d4c4e86b 100644 (file)
--- a/main.cpp
+++ b/main.cpp
@@ -22,12 +22,18 @@
 #endif
 
 #include <cstdint>
-#include <libsigrokcxx/libsigrokcxx.hpp>
-
+#include <fstream>
 #include <getopt.h>
 
+#include <libsigrokcxx/libsigrokcxx.hpp>
+
+#include <QCheckBox>
 #include <QDebug>
+#include <QFile>
+#include <QFileInfo>
+#include <QMessageBox>
 #include <QSettings>
+#include <QTextStream>
 
 #ifdef ENABLE_SIGNALS
 #include "signalhandler.hpp"
@@ -61,6 +67,8 @@ Q_IMPORT_PLUGIN(QSvgPlugin)
 #endif
 
 using std::exception;
+using std::ifstream;
+using std::ofstream;
 using std::shared_ptr;
 using std::string;
 
@@ -73,6 +81,60 @@ void signal_handler(int signum)
        boost::stacktrace::safe_dump_to(stacktrace_filename.toLocal8Bit().data());
        ::raise(SIGABRT);
 }
+
+void process_stacktrace(QString temp_path)
+{
+       const QString stacktrace_outfile = temp_path + "/pv_stacktrace.txt";
+
+       ifstream ifs(stacktrace_filename.toLocal8Bit().data());
+       ofstream ofs(stacktrace_outfile.toLocal8Bit().data(),
+               ofstream::out | ofstream::trunc);
+
+       boost::stacktrace::stacktrace st =
+               boost::stacktrace::stacktrace::from_dump(ifs);
+       ofs << st;
+
+       ofs.close();
+       ifs.close();
+
+       QFile f(stacktrace_outfile);
+       f.open(QFile::ReadOnly | QFile::Text);
+       QTextStream fs(&f);
+       QString stacktrace = fs.readAll();
+       stacktrace = stacktrace.trimmed().replace('\n', "<br />");
+
+       qDebug() << QObject::tr("Stack trace of previous crash:");
+       qDebug() << "---------------------------------------------------------";
+       // Note: qDebug() prints quotation marks for QString output, so we feed it char*
+       qDebug() << stacktrace.toLocal8Bit().data();
+       qDebug() << "---------------------------------------------------------";
+
+       f.close();
+
+       // Remove stack trace so we don't process it again the next time we run
+       QFile::remove(stacktrace_filename.toLocal8Bit().data());
+
+       // Show notification dialog if permitted
+       pv::GlobalSettings settings;
+       if (settings.value(pv::GlobalSettings::Key_Log_NotifyOfStacktrace).toBool()) {
+               QCheckBox *cb = new QCheckBox(QObject::tr("Don't show this message again"));
+
+               QMessageBox msgbox;
+               msgbox.setText(QObject::tr("When %1 last crashed, it created a stack trace.\n" \
+                       "A human-readable form has been saved to disk and was written to " \
+                       "the log. You may access it from the settings dialog.").arg(PV_TITLE));
+               msgbox.setIcon(QMessageBox::Icon::Information);
+               msgbox.addButton(QMessageBox::Ok);
+               msgbox.setCheckBox(cb);
+
+               QObject::connect(cb, &QCheckBox::stateChanged, [](int state){
+                       pv::GlobalSettings settings;
+                       settings.setValue(pv::GlobalSettings::Key_Log_NotifyOfStacktrace,
+                               !state); });
+
+               msgbox.exec();
+       }
+}
 #endif
 
 void usage()
@@ -120,6 +182,7 @@ int main(int argc, char *argv[])
                        {"version", no_argument, nullptr, 'V'},
                        {"loglevel", required_argument, nullptr, 'l'},
                        {"driver", required_argument, nullptr, 'd'},
+                       {"no-scan", no_argument, nullptr, 'D'},
                        {"input-file", required_argument, nullptr, 'i'},
                        {"input-format", required_argument, nullptr, 'I'},
                        {"clean", no_argument, nullptr, 'c'},
@@ -217,6 +280,9 @@ int main(int argc, char *argv[])
 
        ::signal(SIGSEGV, &signal_handler);
        ::signal(SIGABRT, &signal_handler);
+
+       if (QFileInfo::exists(stacktrace_filename))
+               process_stacktrace(temp_path);
 #endif
 
 #ifdef ANDROID