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3d49fdc2e4
The underlying C coded Gtk Entry widget is careful to zero memory after use, allowing the widget to be safely used for password entry [1]. However the C++ method Gtk::Entry::get_text() just takes the underlying C string from the Gtk Entry widget and copies it when constructing a Glib::ustring for the return value [2]. So directly use the Gtk/C API to get the C string instead. [1] https://git.gnome.org/browse/gtk+/tree/gtk/gtkentrybuffer.c?h=3.22.28#n92 See function trash_area() which zeros memory and its use in gtk_entry_buffer_normal_insert_text(), gtk_entry_buffer_normal_delete_text() and gtk_entry_buffer_finalize(). [2] https://git.gnome.org/browse/gtkmm/tree/gtk/src/entry.hg?h=3.22.2#n104 _WRAP_METHOD(Glib::ustring get_text() const, gtk_entry_get_text) https://git.gnome.org/browse/glibmm/tree/docs/internal/using_gmmproc.txt?h=2.46.1#n53 _WRAP_METHOD(Glib::ustring METHOD const, FUNC) is processed to: Glib::ustring METHOD() const { return Glib::convert_const_gchar_ptr_to_ustring( FUNC(const_cast<GtkEntry*>(gobj()))); } https://git.gnome.org/browse/glibmm/tree/glib/glibmm/utility.h?h=2.46.1#n82 Glib::ustring convert_const_gchar_ptr_to_ustring(const char* str) { return (str) ? Glib::ustring(str) : Glib::ustring(); } So Gtk::Entry::get_text() calls Glib::ustring() constructor which copies the C string to create the Glib::ustring object returned. Bug 795617 - Implement opening and closing of LUKS mappings
42 lines
1.1 KiB
C++
42 lines
1.1 KiB
C++
/* Copyright (C) 2017 Mike Fleetwood
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GPARTED_DIALOGPASSWORDENTRY_H
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#define GPARTED_DIALOGPASSWORDENTRY_H
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#include "Partition.h"
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#include <gtkmm/dialog.h>
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#include <gtkmm/entry.h>
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namespace GParted
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{
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class DialogPasswordEntry : public Gtk::Dialog
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{
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public:
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DialogPasswordEntry( const Partition & partition );
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~DialogPasswordEntry();
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const char * get_password();
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private:
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Gtk::Entry *entry;
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};
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} //GParted
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#endif /* GPARTEDPASSWORDENTRY_H */
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