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b/fltk/pinwindow.cxx
/* | |||||
pinwindow.cxx - PinWindow is a simple fltk dialog for entring password | |||||
with timeout. if needed description (long text), error message, qualitybar | |||||
and etc should used PassWindow. | |||||
Copyright (C) 2016 Anatoly madRat L. Berenblit | |||||
Written by Anatoly madRat L. Berenblit <madrat-@users.noreply.github.com>. | |||||
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. | |||||
*/ | |||||
#include <FL/Fl.H> | |||||
#include <FL/Fl_Window.H> | |||||
#include <FL/Fl_Box.H> | |||||
#include <FL/Fl_Input.H> | |||||
#include <FL/Fl_Button.H> | |||||
#include <FL/Fl_Secret_Input.H> | |||||
#include <FL/Fl_Return_Button.H> | |||||
#include <FL/Fl_Pixmap.H> | |||||
#include "memory.h" | |||||
#include "encrypt.xpm" | |||||
#include "icon.xpm" | |||||
#include "pinwindow.h" | |||||
const char *PinWindow::TITLE = "Password"; | |||||
const char *PinWindow::BUTTON_OK = "OK"; | |||||
const char *PinWindow::BUTTON_CANCEL = "Cancel"; | |||||
const char *PinWindow::PROMPT = "Passphrase:"; | |||||
static const char *timeout_format = "%s(%d)"; | |||||
static Fl_Pixmap encrypt(encrypt_xpm); | |||||
static Fl_Pixmap icon(icon_xpm); | |||||
PinWindow::PinWindow() : window_(NULL) | |||||
,message_(NULL) ,input_(NULL) ,ok_(NULL) ,cancel_(NULL) | |||||
,cancel_name_(BUTTON_CANCEL) | |||||
,passwd_(NULL) ,timeout_(0) | |||||
{ | |||||
} | |||||
PinWindow::~PinWindow() | |||||
{ | |||||
wipe(); | |||||
release(); | |||||
delete window_; | |||||
} | |||||
void PinWindow::release() | |||||
{ | |||||
if (NULL != passwd_) | |||||
{ | |||||
memset(passwd_, 0, strlen(passwd_)); | |||||
secmem_free(passwd_); | |||||
} | |||||
passwd_ = NULL; | |||||
} | |||||
void PinWindow::title(const char *name) | |||||
{ | |||||
set_label(window_, name, TITLE); | |||||
} | |||||
void PinWindow::ok(const char* name) | |||||
{ | |||||
set_label(ok_, name, BUTTON_OK); | |||||
} | |||||
void PinWindow::cancel(const char* label) | |||||
{ | |||||
if (NULL != label && 0 != *label) | |||||
cancel_name_ = label; | |||||
else | |||||
cancel_name_ = BUTTON_CANCEL; | |||||
update_cancel_label(); | |||||
} | |||||
void PinWindow::prompt(const char *name) | |||||
{ | |||||
set_label(message_, name, PROMPT); | |||||
} | |||||
void PinWindow::timeout(unsigned int time) | |||||
{ | |||||
if (timeout_ == time) | |||||
return; | |||||
// A xor B ~ A != B | |||||
if ( (time>0) != (timeout_>0)) | |||||
{ | |||||
//enable or disable | |||||
if (time>0) | |||||
Fl::add_timeout(1.0, timeout_cb, this); | |||||
else | |||||
Fl::remove_timeout(timeout_cb, this); | |||||
} | |||||
timeout_=time; | |||||
update_cancel_label(); | |||||
--timeout_; | |||||
} | |||||
void PinWindow::showModal() | |||||
{ | |||||
if (NULL != window_) | |||||
{ | |||||
window_->show(); | |||||
Fl::run(); | |||||
} | |||||
Fl::check(); | |||||
} | |||||
void PinWindow::showModal(const int argc, char* argv[]) | |||||
{ | |||||
if (NULL != window_) | |||||
{ | |||||
window_->show(argc, argv); | |||||
Fl::run(); | |||||
} | |||||
Fl::check(); | |||||
} | |||||
#include <Fl/fl_utf8.h> | |||||
int PinWindow::init(const int cx, const int cy) | |||||
{ | |||||
assert(NULL == window_); | |||||
window_ = new Fl_Window(cx, cy, TITLE); | |||||
Fl_RGB_Image app(&icon); | |||||
window_->icon(&app); | |||||
icon_ = new Fl_Box(10, 10, 64, 64); | |||||
icon_->image(encrypt); | |||||
message_ = new Fl_Box(79, 5, cx-99, 44, PROMPT); | |||||
message_->align(Fl_Align(FL_ALIGN_LEFT_TOP | FL_ALIGN_WRAP | FL_ALIGN_INSIDE)); // left | |||||
input_ = new Fl_Input(79, 59, cx-99, 25); | |||||
input_ = new Fl_Secret_Input(79, 59, cx-99, 25); | |||||
input_->labeltype(FL_NO_LABEL); | |||||
const int button_y = cy-40; | |||||
ok_ = new Fl_Return_Button(cx-300, button_y, 120, 25, BUTTON_OK); | |||||
ok_->callback(ok_cb, this); | |||||
cancel_ = new Fl_Button(cx-160, button_y, 120, 25); | |||||
update_cancel_label(); | |||||
cancel_->callback(cancel_cb, this); | |||||
window_->hotspot(input_); | |||||
window_->set_modal(); | |||||
return 84; | |||||
}; | |||||
void PinWindow::update_cancel_label() | |||||
{ | |||||
if (timeout_ == 0) | |||||
{ | |||||
cancel_->label(cancel_name_.c_str()); | |||||
} | |||||
else | |||||
{ | |||||
const size_t len = cancel_name_.size()+strlen(timeout_format)+10+1; | |||||
char *buf = new char[len]; | |||||
snprintf(buf, len, timeout_format, cancel_name_.c_str(), timeout_); | |||||
cancel_->copy_label(buf); | |||||
delete[] buf; // no way to attach label | |||||
} | |||||
} | |||||
void PinWindow::timeout_cb(void* val) | |||||
{ | |||||
PinWindow *self = reinterpret_cast<PinWindow*>(val); | |||||
if (self->timeout_ == 0) | |||||
{ | |||||
cancel_cb(self->cancel_, self); | |||||
} | |||||
else | |||||
{ | |||||
self->update_cancel_label(); | |||||
--self->timeout_; | |||||
Fl::repeat_timeout(1.0, timeout_cb, val); | |||||
} | |||||
} | |||||
void PinWindow::cancel_cb(Fl_Widget *button, void *val) | |||||
{ | |||||
PinWindow *self = reinterpret_cast<PinWindow*>(val); | |||||
self->wipe(); | |||||
self->release(); | |||||
self->window_->hide(); | |||||
} | |||||
void PinWindow::ok_cb(Fl_Widget *button, void *val) | |||||
{ | |||||
PinWindow *self = reinterpret_cast<PinWindow*>(val); | |||||
self->release(); | |||||
const char *passwd = self->input_->value(); | |||||
size_t len = strlen(passwd)+1; | |||||
self->passwd_ = reinterpret_cast<char*>(secmem_malloc(len)); | |||||
if (NULL != self->passwd_) | |||||
memcpy(self->passwd_, passwd, len); | |||||
self->wipe(); | |||||
self->window_->hide(); | |||||
} | |||||
void PinWindow::wipe() | |||||
{ | |||||
int len = input_->size(); | |||||
char* emul = new char[len+1]; | |||||
for (int i=0; i<len; ++i) | |||||
{ | |||||
emul[i] = 0x20 + rand()%(128-20); // [20..127] | |||||
} | |||||
emul[len] = 0; | |||||
input_->replace(0, len, emul, len); | |||||
delete[] emul; | |||||
input_->value(TITLE); // hide size too | |||||
} | |||||
PinWindow* PinWindow::create() | |||||
{ | |||||
PinWindow* p = new PinWindow; | |||||
p->init(410, 140); | |||||
p->window_->end(); | |||||
p->input_->take_focus(); | |||||
return p; | |||||
} |