remmina_unlock.c

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/*
 * Remmina - The GTK+ Remote Desktop Client
 * Copyright (C) 2016-2020 Antenore Gatta, Giovanni Panozzo
 *
 * 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
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA  02110-1301, USA.
 *
 *  In addition, as a special exception, the copyright holders give
 *  permission to link the code of portions of this program with the
 *  OpenSSL library under certain conditions as described in each
 *  individual source file, and distribute linked combinations
 *  including the two.
 *  You must obey the GNU General Public License in all respects
 *  for all of the code used other than OpenSSL. *  If you modify
 *  file(s) with this exception, you may extend this exception to your
 *  version of the file(s), but you are not obligated to do so. *  If you
 *  do not wish to do so, delete this exception statement from your
 *  version. *  If you delete this exception statement from all source
 *  files in the program, then also delete it here.
 *
 */

#include <stdlib.h>

#include <gtk/gtk.h>
#include <glib/gi18n.h>
#include <glib.h>
#include <glib/gprintf.h>

#include "config.h"
#include "remmina_sodium.h"
#include "remmina_pref.h"
#include "remmina_unlock.h"
#include "remmina_public.h"
#include "remmina/remmina_trace_calls.h"

#if SODIUM_VERSION_INT >= 90200
static RemminaUnlockDialog *remmina_unlock_dialog;
#define GET_OBJ(object_name) gtk_builder_get_object(remmina_unlock_dialog->builder, object_name)

GTimer *timer;
gboolean isinit;

static void remmina_unlock_timer_init()
{
    TRACE_CALL(__func__);

    timer = g_timer_new();
    g_info("Unlock Master Password timer initialized");
}

static void remmina_unlock_timer_reset(gpointer user_data)
{
    TRACE_CALL(__func__);

    g_timer_reset(timer);
    g_info("Unlock Master Password timer reset");
}

void remmina_unlock_timer_destroy()
{
    TRACE_CALL(__func__);

    g_timer_destroy(timer);
}

static void remmina_unlock_unlock_clicked(GtkButton *btn, gpointer user_data)
{
    TRACE_CALL(__func__);
    //g_timer_reset(remmina_unlock_dialog->timer);

    gchar *unlock_password;
    const gchar *entry_passwd;
    gint rc;

    unlock_password = remmina_pref_get_value("unlock_password");
    entry_passwd = gtk_entry_get_text(remmina_unlock_dialog->entry_unlock);
    rc = remmina_sodium_pwhash_str_verify(unlock_password, entry_passwd);
    g_info("remmina_sodium_pwhash_str_verify returned %i", rc);

    if (rc == 0) {
        g_info("Passphrase veryfied successfully");
        remmina_unlock_timer_reset(remmina_unlock_dialog);
        gtk_widget_destroy(GTK_WIDGET(remmina_unlock_dialog->dialog));
        remmina_unlock_dialog->dialog = NULL;
    } else {
        g_warning ("Passphrase is wrong, to reset it, you can edit the remmina.pref file by hand");
    }
}

static void remmina_unlock_cancel_clicked(GtkButton *btn, gpointer user_data)
{
    TRACE_CALL(__func__);
    remmina_unlock_dialog->retval = 0;
    gtk_widget_destroy(GTK_WIDGET(remmina_unlock_dialog->dialog));
    remmina_unlock_dialog->dialog = NULL;
}

gint remmina_unlock_new(GtkWindow *parent)
{
    TRACE_CALL(__func__);

    gdouble unlock_timeout;
    gdouble elapsed = 0.0;
    gboolean lock = TRUE;

    unlock_timeout = remmina_pref.unlock_timeout;


    remmina_unlock_dialog = g_new0(RemminaUnlockDialog, 1);
    remmina_unlock_dialog->retval = 1;

    if (timer == NULL)
        remmina_unlock_timer_init();
    if (timer != NULL)
        elapsed = g_timer_elapsed(timer, NULL);
    if (((int)unlock_timeout - elapsed) < 0) lock = TRUE;
    if (((int)unlock_timeout - elapsed) >= 0) lock = FALSE;
    /* timer & timout = 0 */
    if (timer != NULL && (int)unlock_timeout == 0) lock = FALSE;
    /* first time and timout = 30 */
    if (isinit == 0 && (int)unlock_timeout >= 0) {
        lock = TRUE;
        isinit = TRUE;
    }
    /* first time and timout = 0 */
    if (isinit == 0 && (int)unlock_timeout == 0) {
        lock = TRUE;
        isinit = TRUE;
    }
    g_info("Based on settings and current status, the unlock dialog is set to %d", lock);

    remmina_unlock_dialog->builder = remmina_public_gtk_builder_new_from_file("remmina_unlock.glade");
    remmina_unlock_dialog->dialog = GTK_DIALOG(gtk_builder_get_object(remmina_unlock_dialog->builder, "RemminaUnlockDialog"));
    if (parent)
        gtk_window_set_transient_for(GTK_WINDOW(remmina_unlock_dialog->dialog), parent);

    remmina_unlock_dialog->entry_unlock = GTK_ENTRY(GET_OBJ("entry_unlock"));
    gtk_entry_set_activates_default(GTK_ENTRY(remmina_unlock_dialog->entry_unlock), TRUE);
    remmina_unlock_dialog->button_unlock = GTK_BUTTON(GET_OBJ("button_unlock"));
    gtk_widget_set_can_default(GTK_WIDGET(remmina_unlock_dialog->button_unlock), TRUE);
    gtk_widget_grab_default(GTK_WIDGET(remmina_unlock_dialog->button_unlock));
    remmina_unlock_dialog->button_unlock_cancel = GTK_BUTTON(GET_OBJ("button_unlock_cancel"));

    g_signal_connect(remmina_unlock_dialog->button_unlock, "clicked",
             G_CALLBACK(remmina_unlock_unlock_clicked), (gpointer)remmina_unlock_dialog);
    g_signal_connect(remmina_unlock_dialog->button_unlock_cancel, "clicked",
             G_CALLBACK(remmina_unlock_cancel_clicked), (gpointer)remmina_unlock_dialog);
    g_signal_connect (remmina_unlock_dialog->dialog, "close",
                  G_CALLBACK (remmina_unlock_cancel_clicked), (gpointer)remmina_unlock_dialog);

    /* Connect signals */
    gtk_builder_connect_signals(remmina_unlock_dialog->builder, NULL);

    if (remmina_pref_get_boolean("use_master_password")
            && (g_strcmp0(remmina_pref_get_value("unlock_password"), "") != 0)
            && lock != 0)
        gtk_dialog_run(remmina_unlock_dialog->dialog);
    return(remmina_unlock_dialog->retval);
}

#else
gint remmina_unlock_new(GtkWindow *parent)
{
    return 1;
}
#endif