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(probably an outdated installation, or a third party SSL plugin).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 "config.h"
#include <ncurses.h>
#include "gntinternal.h"
#undef GNT_LOG_DOMAIN
#define GNT_LOG_DOMAIN "Colors"
#include "gntcolors.h"
#include "gntstyle.h"
#include <glib.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
static gboolean hascolors;
static int custom_type = GNT_COLORS;
static struct
{
short r, g, b;
} colors[GNT_TOTAL_COLORS];
static void
backup_colors(void)
{
short i;
for (i = 0; i < GNT_TOTAL_COLORS; i++)
{
color_content(i, &colors[i].r,
&colors[i].g, &colors[i].b);
}
}
static gboolean
can_use_custom_color(void)
{
return (gnt_style_get_bool(GNT_STYLE_COLOR, FALSE) && can_change_color());
}
static void
restore_colors(void)
{
short i;
for (i = 0; i < GNT_TOTAL_COLORS; i++)
{
init_color(i, colors[i].r,
colors[i].g, colors[i].b);
}
}
void gnt_init_colors()
{
static gboolean init = FALSE;
int defaults;
if (init)
return;
init = TRUE;
start_color();
if (!(hascolors = has_colors()))
return;
defaults = use_default_colors();
if (can_use_custom_color())
{
backup_colors();
/* Do some init_color()s */
init_color(GNT_COLOR_BLACK, 0, 0, 0);
init_color(GNT_COLOR_RED, 1000, 0, 0);
init_color(GNT_COLOR_GREEN, 0, 1000, 0);
init_color(GNT_COLOR_BLUE, 250, 250, 700);
init_color(GNT_COLOR_WHITE, 1000, 1000, 1000);
init_color(GNT_COLOR_GRAY, 699, 699, 699);
init_color(GNT_COLOR_DARK_GRAY, 256, 256, 256);
/* Now some init_pair()s */
init_pair(GNT_COLOR_NORMAL, GNT_COLOR_BLACK, GNT_COLOR_WHITE);
init_pair(GNT_COLOR_HIGHLIGHT, GNT_COLOR_WHITE, GNT_COLOR_BLUE);
init_pair(GNT_COLOR_SHADOW, GNT_COLOR_BLACK, GNT_COLOR_DARK_GRAY);
init_pair(GNT_COLOR_TITLE, GNT_COLOR_WHITE, GNT_COLOR_BLUE);
init_pair(GNT_COLOR_TITLE_D, GNT_COLOR_WHITE, GNT_COLOR_GRAY);
init_pair(GNT_COLOR_TEXT_NORMAL, GNT_COLOR_WHITE, GNT_COLOR_BLUE);
init_pair(GNT_COLOR_HIGHLIGHT_D, GNT_COLOR_BLACK, GNT_COLOR_GRAY);
init_pair(GNT_COLOR_DISABLED, GNT_COLOR_GRAY, GNT_COLOR_WHITE);
init_pair(GNT_COLOR_URGENT, GNT_COLOR_WHITE, GNT_COLOR_RED);
}
else
{
int bg;
if (defaults == OK) {
init_pair(GNT_COLOR_NORMAL, -1, -1);
bg = -1;
} else {
init_pair(GNT_COLOR_NORMAL, COLOR_BLACK, COLOR_WHITE);
bg = COLOR_WHITE;
}
init_pair(GNT_COLOR_DISABLED, COLOR_YELLOW, bg);
init_pair(GNT_COLOR_URGENT, COLOR_GREEN, bg);
init_pair(GNT_COLOR_HIGHLIGHT, COLOR_WHITE, COLOR_BLUE);
init_pair(GNT_COLOR_SHADOW, COLOR_BLACK, COLOR_BLACK);
init_pair(GNT_COLOR_TITLE, COLOR_WHITE, COLOR_BLUE);
init_pair(GNT_COLOR_TITLE_D, COLOR_WHITE, COLOR_BLACK);
init_pair(GNT_COLOR_TEXT_NORMAL, COLOR_WHITE, COLOR_BLUE);
init_pair(GNT_COLOR_HIGHLIGHT_D, COLOR_CYAN, COLOR_BLACK);
}
}
void
gnt_uninit_colors()
{
if (can_use_custom_color())
restore_colors();
}
#if GLIB_CHECK_VERSION(2,6,0)
int
gnt_colors_get_color(char *key)
{
int color;
gboolean custom = can_use_custom_color();
key = g_strstrip(key);
if (strcmp(key, "black") == 0)
color = custom ? GNT_COLOR_BLACK : COLOR_BLACK;
else if (strcmp(key, "red") == 0)
color = custom ? GNT_COLOR_RED : COLOR_RED;
else if (strcmp(key, "green") == 0)
color = custom ? GNT_COLOR_GREEN : COLOR_GREEN;
else if (strcmp(key, "blue") == 0)
color = custom ? GNT_COLOR_BLUE : COLOR_BLUE;
else if (strcmp(key, "white") == 0)
color = custom ? GNT_COLOR_WHITE : COLOR_WHITE;
else if (strcmp(key, "gray") == 0 || strcmp(key, "grey") == 0)
color = custom ? GNT_COLOR_GRAY : COLOR_YELLOW; /* eh? */
else if (strcmp(key, "darkgray") == 0 || strcmp(key, "darkgrey") == 0)
color = custom ? GNT_COLOR_DARK_GRAY : COLOR_BLACK;
else if (strcmp(key, "magenta") == 0)
color = COLOR_MAGENTA;
else if (strcmp(key, "cyan") == 0)
color = COLOR_CYAN;
else if (strcmp(key, "default") == 0)
color = -1;
else {
g_warning("Invalid color name: %s\n", key);
color = -EINVAL;
}
return color;
}
void gnt_colors_parse(GKeyFile *kfile)
{
GError *error = NULL;
gsize nkeys;
char **keys = g_key_file_get_keys(kfile, "colors", &nkeys, &error);
if (error)
{
gnt_warning("%s", error->message);
g_error_free(error);
error = NULL;
}
else if (nkeys)
{
gnt_init_colors();
while (nkeys--)
{
gsize len;
gchar *key = keys[nkeys];
char **list = g_key_file_get_string_list(kfile, "colors", key, &len, NULL);
if (len == 3)
{
int r = atoi(list[0]);
int g = atoi(list[1]);
int b = atoi(list[2]);
int color = -1;
key = g_ascii_strdown(key, -1);
color = gnt_colors_get_color(key);
g_free(key);
if (color == -EINVAL) {
g_strfreev(list);
continue;
}
init_color(color, r, g, b);
}
g_strfreev(list);
}
g_strfreev(keys);
}
gnt_color_pairs_parse(kfile);
}
void gnt_color_pairs_parse(GKeyFile *kfile)
{
GError *error = NULL;
gsize nkeys;
char **keys = g_key_file_get_keys(kfile, "colorpairs", &nkeys, &error);
if (error)
{
gnt_warning("%s", error->message);
g_error_free(error);
return;
}
else if (nkeys)
gnt_init_colors();
while (nkeys--)
{
gsize len;
gchar *key = keys[nkeys];
char **list = g_key_file_get_string_list(kfile, "colorpairs", key, &len, NULL);
if (len == 2)
{
GntColorType type = 0;
gchar *fgc = g_ascii_strdown(list[0], -1);
gchar *bgc = g_ascii_strdown(list[1], -1);
int fg = gnt_colors_get_color(fgc);
int bg = gnt_colors_get_color(bgc);
g_free(fgc);
g_free(bgc);
if (fg == -EINVAL || bg == -EINVAL) {
g_strfreev(list);
continue;
}
key = g_ascii_strdown(key, -1);
if (strcmp(key, "normal") == 0)
type = GNT_COLOR_NORMAL;
else if (strcmp(key, "highlight") == 0)
type = GNT_COLOR_HIGHLIGHT;
else if (strcmp(key, "highlightd") == 0)
type = GNT_COLOR_HIGHLIGHT_D;
else if (strcmp(key, "shadow") == 0)
type = GNT_COLOR_SHADOW;
else if (strcmp(key, "title") == 0)
type = GNT_COLOR_TITLE;
else if (strcmp(key, "titled") == 0)
type = GNT_COLOR_TITLE_D;
else if (strcmp(key, "text") == 0)
type = GNT_COLOR_TEXT_NORMAL;
else if (strcmp(key, "disabled") == 0)
type = GNT_COLOR_DISABLED;
else if (strcmp(key, "urgent") == 0)
type = GNT_COLOR_URGENT;
else {
g_strfreev(list);
g_free(key);
continue;
}
g_free(key);
init_pair(type, fg, bg);
}
g_strfreev(list);
}
g_strfreev(keys);
}
#endif /* GKeyFile */
int gnt_color_pair(int pair)
{
return (hascolors ? COLOR_PAIR(pair) :
((pair == GNT_COLOR_NORMAL || pair == GNT_COLOR_HIGHLIGHT_D ||
pair == GNT_COLOR_TITLE_D || pair == GNT_COLOR_DISABLED) ? 0 : (int)A_STANDOUT));
}
int gnt_color_add_pair(int fg, int bg)
{
init_pair(custom_type, fg, bg);
return custom_type++;
}