pidgin/pidgin

certificate: Use SHA256 fingerprints instead of SHA1
release-2.x.y
2017-03-06, dx
b3d0ba7c75f6
certificate: Use SHA256 fingerprints instead of SHA1

This meant adding a get_fingerprint_sha256 function to the certificate scheme
structs, which meant adding a struct_size member because we ran out of reserved
members there.

The API-facing purple_certificate_get_fingerprint_sha256() has a fallback
parameter to use sha1 if the SSL plugin doesn't implement this function
(probably an outdated installation, or a third party SSL plugin). When using
the function for display purposes, the fallback is disabled and it returns
NULL, but when using it to compare certificates it's better to have at least
the SHA1.

In functions like purple_certificate_display_x509(), some slight changes to
translatable strings would have been required. Since we're in a string freeze
right now, I avoided those by concatenating a language-neutral "SHA256: %s" at
the end of those messages. The SHA1 line used the word "fingerprint" but we
can't reuse that translation. This should be cleaned up after the release.
/**
* GNT - The GLib Ncurses Toolkit
*
* GNT is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* This library 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 02111-1301 USA
*/
#include "gntinternal.h"
#include "gntcolors.h"
#include "gntkeys.h"
#include "gntslider.h"
#include "gntstyle.h"
enum
{
SIG_VALUE_CHANGED,
SIGS,
};
static guint signals[SIGS] = { 0 };
static GntWidgetClass *parent_class = NULL;
/* returns TRUE if the value was changed */
static gboolean
sanitize_value(GntSlider *slider)
{
if (slider->current < slider->min)
slider->current = slider->min;
else if (slider->current > slider->max)
slider->current = slider->max;
else
return FALSE;
return TRUE;
}
static void
redraw_slider(GntSlider *slider)
{
GntWidget *widget = GNT_WIDGET(slider);
if (GNT_WIDGET_IS_FLAG_SET(widget, GNT_WIDGET_MAPPED))
gnt_widget_draw(widget);
}
static void
slider_value_changed(GntSlider *slider)
{
g_signal_emit(slider, signals[SIG_VALUE_CHANGED], 0, slider->current);
}
static void
gnt_slider_draw(GntWidget *widget)
{
GntSlider *slider = GNT_SLIDER(widget);
int attr = 0;
int position, size = 0;
if (slider->vertical)
size = widget->priv.height;
else
size = widget->priv.width;
if (gnt_widget_has_focus(widget))
attr |= GNT_COLOR_HIGHLIGHT;
else
attr |= GNT_COLOR_HIGHLIGHT_D;
if (slider->max != slider->min)
position = ((size - 1) * (slider->current - slider->min)) / (slider->max - slider->min);
else
position = 0;
if (slider->vertical) {
mvwvline(widget->window, size-position, 0, ACS_VLINE | gnt_color_pair(GNT_COLOR_NORMAL) | A_BOLD,
position);
mvwvline(widget->window, 0, 0, ACS_VLINE | gnt_color_pair(GNT_COLOR_NORMAL),
size-position);
} else {
mvwhline(widget->window, 0, 0, ACS_HLINE | gnt_color_pair(GNT_COLOR_NORMAL) | A_BOLD,
position);
mvwhline(widget->window, 0, position, ACS_HLINE | gnt_color_pair(GNT_COLOR_NORMAL),
size - position);
}
mvwaddch(widget->window,
slider->vertical ? (size - position - 1) : 0,
slider->vertical ? 0 : position,
ACS_CKBOARD | gnt_color_pair(attr));
}
static void
gnt_slider_size_request(GntWidget *widget)
{
if (GNT_SLIDER(widget)->vertical) {
widget->priv.width = 1;
widget->priv.height = 5;
} else {
widget->priv.width = 5;
widget->priv.height = 1;
}
}
static void
gnt_slider_map(GntWidget *widget)
{
if (widget->priv.width == 0 || widget->priv.height == 0)
gnt_widget_size_request(widget);
GNTDEBUG;
}
static gboolean
step_back(GntBindable *bindable, GList *null)
{
GntSlider *slider = GNT_SLIDER(bindable);
gnt_slider_advance_step(slider, -1);
return TRUE;
}
static gboolean
small_step_back(GntBindable *bindable, GList *null)
{
GntSlider *slider = GNT_SLIDER(bindable);
gnt_slider_set_value(slider, slider->current - slider->smallstep);
return TRUE;
}
static gboolean
large_step_back(GntBindable *bindable, GList *null)
{
GntSlider *slider = GNT_SLIDER(bindable);
gnt_slider_set_value(slider, slider->current - slider->largestep);
return TRUE;
}
static gboolean
step_forward(GntBindable *bindable, GList *list)
{
GntSlider *slider = GNT_SLIDER(bindable);
gnt_slider_advance_step(slider, 1);
return TRUE;
}
static gboolean
small_step_forward(GntBindable *bindable, GList *null)
{
GntSlider *slider = GNT_SLIDER(bindable);
gnt_slider_set_value(slider, slider->current + slider->smallstep);
return TRUE;
}
static gboolean
large_step_forward(GntBindable *bindable, GList *null)
{
GntSlider *slider = GNT_SLIDER(bindable);
gnt_slider_set_value(slider, slider->current + slider->largestep);
return TRUE;
}
static gboolean
move_min_value(GntBindable *bindable, GList *null)
{
GntSlider *slider = GNT_SLIDER(bindable);
gnt_slider_set_value(slider, slider->min);
return TRUE;
}
static gboolean
move_max_value(GntBindable *bindable, GList *null)
{
GntSlider *slider = GNT_SLIDER(bindable);
gnt_slider_set_value(slider, slider->max);
return TRUE;
}
static void
gnt_slider_class_init(GntSliderClass *klass)
{
GntBindableClass *bindable = GNT_BINDABLE_CLASS(klass);
parent_class = GNT_WIDGET_CLASS(klass);
parent_class->draw = gnt_slider_draw;
parent_class->map = gnt_slider_map;
parent_class->size_request = gnt_slider_size_request;
klass->changed = NULL;
signals[SIG_VALUE_CHANGED] =
g_signal_new("changed",
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET(GntSliderClass, changed),
NULL, NULL,
g_cclosure_marshal_VOID__INT,
G_TYPE_NONE, 1, G_TYPE_INT);
gnt_bindable_class_register_action(bindable, "step-backward", step_back, GNT_KEY_LEFT, NULL);
gnt_bindable_register_binding(bindable, "step-backward", GNT_KEY_DOWN, NULL);
gnt_bindable_class_register_action(bindable, "step-forward", step_forward, GNT_KEY_RIGHT, NULL);
gnt_bindable_register_binding(bindable, "step-forward", GNT_KEY_UP, NULL);
gnt_bindable_class_register_action(bindable, "small-step-backward", small_step_back, GNT_KEY_CTRL_LEFT, NULL);
gnt_bindable_register_binding(bindable, "small-step-backward", GNT_KEY_CTRL_DOWN, NULL);
gnt_bindable_class_register_action(bindable, "small-step-forward", small_step_forward, GNT_KEY_CTRL_RIGHT, NULL);
gnt_bindable_register_binding(bindable, "small-step-forward", GNT_KEY_CTRL_UP, NULL);
gnt_bindable_class_register_action(bindable, "large-step-backward", large_step_back, GNT_KEY_PGDOWN, NULL);
gnt_bindable_class_register_action(bindable, "large-step-forward", large_step_forward, GNT_KEY_PGUP, NULL);
gnt_bindable_class_register_action(bindable, "min-value", move_min_value, GNT_KEY_HOME, NULL);
gnt_bindable_class_register_action(bindable, "max-value", move_max_value, GNT_KEY_END, NULL);
gnt_style_read_actions(G_OBJECT_CLASS_TYPE(klass), GNT_BINDABLE_CLASS(klass));
}
static void
gnt_slider_init(GTypeInstance *instance, gpointer class)
{
GntWidget *widget = GNT_WIDGET(instance);
GNT_WIDGET_SET_FLAGS(widget, GNT_WIDGET_NO_SHADOW | GNT_WIDGET_NO_BORDER | GNT_WIDGET_CAN_TAKE_FOCUS);
widget->priv.minw = 1;
widget->priv.minh = 1;
GNTDEBUG;
}
/******************************************************************************
* GntSlider API
*****************************************************************************/
GType
gnt_slider_get_gtype(void)
{
static GType type = 0;
if(type == 0)
{
static const GTypeInfo info = {
sizeof(GntSliderClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc)gnt_slider_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof(GntSlider),
0, /* n_preallocs */
gnt_slider_init, /* instance_init */
NULL /* value_table */
};
type = g_type_register_static(GNT_TYPE_WIDGET,
"GntSlider",
&info, 0);
}
return type;
}
GntWidget *gnt_slider_new(gboolean vertical, int max, int min)
{
GntWidget *widget = g_object_new(GNT_TYPE_SLIDER, NULL);
GntSlider *slider = GNT_SLIDER(widget);
slider->vertical = vertical;
if (vertical) {
GNT_WIDGET_SET_FLAGS(widget, GNT_WIDGET_GROW_Y);
} else {
GNT_WIDGET_SET_FLAGS(widget, GNT_WIDGET_GROW_X);
}
gnt_slider_set_range(slider, max, min);
slider->step = 1;
return widget;
}
void gnt_slider_set_value(GntSlider *slider, int value)
{
int old;
if (slider->current == value)
return;
old = slider->current;
slider->current = value;
sanitize_value(slider);
if (old == slider->current)
return;
redraw_slider(slider);
slider_value_changed(slider);
}
int gnt_slider_get_value(GntSlider *slider)
{
return slider->current;
}
int gnt_slider_advance_step(GntSlider *slider, int steps)
{
gnt_slider_set_value(slider, slider->current + steps * slider->step);
return slider->current;
}
void gnt_slider_set_step(GntSlider *slider, int step)
{
slider->step = step;
}
void gnt_slider_set_small_step(GntSlider *slider, int step)
{
slider->smallstep = step;
}
void gnt_slider_set_large_step(GntSlider *slider, int step)
{
slider->largestep = step;
}
void gnt_slider_set_range(GntSlider *slider, int max, int min)
{
slider->max = MAX(max, min);
slider->min = MIN(max, min);
sanitize_value(slider);
}
static void
update_label(GntSlider *slider, int current_value, GntLabel *label)
{
char value[256];
g_snprintf(value, sizeof(value), "%d/%d", current_value, slider->max);
gnt_label_set_text(label, value);
}
void gnt_slider_reflect_label(GntSlider *slider, GntLabel *label)
{
g_signal_connect(G_OBJECT(slider), "changed", G_CALLBACK(update_label), label);
}