Qt: validate format string before calling strftime()

According to https://msdn.microsoft.com/en-us/library/fe06s4ak.aspx
an invalid string will trigger invalid parameter handler

Also check the validity of each field before activating import button

Bug: 11873
Change-Id: I9fc1c6e061a02354690871410f0e2cf2e0dd86a7
Reviewed-on: https://code.wireshark.org/review/12537
Reviewed-by: Pascal Quantin <pascal.quantin@gmail.com>
Petri-Dish: Pascal Quantin <pascal.quantin@gmail.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Guy Harris <guy@alum.mit.edu>

1 files changed, 13 insertions, 2 deletions

diff --git a/ui/qt/import_text_dialog.h b/ui/qt/import_text_dialog.h
index eeb79b47bc..c06a6df0fe 100644
--- a/ui/qt/import_text_dialog.h
+++ b/ui/qt/import_text_dialog.h
@@ -52,14 +52,25 @@ public:
 private:
     void convertTextFile();
     void enableHeaderWidgets(bool enable_buttons = true);
-    void check_line_edit(SyntaxLineEdit *le, const QString &num_str, int base, guint max_val, bool is_short, guint *val_ptr);
+    void check_line_edit(SyntaxLineEdit *le, bool &ok_enable, const QString &num_str, int base, guint max_val, bool is_short, guint *val_ptr);
+    bool checkDateTimeFormat(const QString &time_format);
+    void updateImportButtonState();
 
     Ui::ImportTextDialog *ti_ui_;
 
-    QPushButton *ok_button_;
+    QPushButton *import_button_;
     QList<QRadioButton *>encap_buttons_;
     text_import_info_t import_info_;
     QString capfile_name_;
+    bool file_ok_;
+    bool time_format_ok_;
+    bool ether_type_ok_;
+    bool proto_ok_;
+    bool source_port_ok_;
+    bool dest_port_ok_;
+    bool tag_ok_;
+    bool ppi_ok_;
+    bool max_len_ok_;
 
 public slots:
     int exec();