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(probably an outdated installation, or a third party SSL plugin).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.
/**
* purple
*
* Purple 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 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 02111-1301 USA
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <glib.h>
#include "debug.h"
#include "internal.h"
#include "pluginpref.h"
#include "prefs.h"
struct _PurplePluginPrefFrame
{
GList *prefs;
};
struct _PurplePluginPref
{
char *name;
char *label;
PurplePluginPrefType type;
int min;
int max;
GList *choices;
unsigned int max_length;
gboolean masked;
PurpleStringFormatType format;
};
PurplePluginPrefFrame *
purple_plugin_pref_frame_new()
{
PurplePluginPrefFrame *frame;
frame = g_new0(PurplePluginPrefFrame, 1);
return frame;
}
void
purple_plugin_pref_frame_destroy(PurplePluginPrefFrame *frame)
{
g_return_if_fail(frame != NULL);
g_list_foreach(frame->prefs, (GFunc)purple_plugin_pref_destroy, NULL);
g_list_free(frame->prefs);
g_free(frame);
}
void
purple_plugin_pref_frame_add(PurplePluginPrefFrame *frame, PurplePluginPref *pref)
{
g_return_if_fail(frame != NULL);
g_return_if_fail(pref != NULL);
frame->prefs = g_list_append(frame->prefs, pref);
}
GList *
purple_plugin_pref_frame_get_prefs(PurplePluginPrefFrame *frame)
{
g_return_val_if_fail(frame != NULL, NULL);
g_return_val_if_fail(frame->prefs != NULL, NULL);
return frame->prefs;
}
PurplePluginPref *
purple_plugin_pref_new()
{
PurplePluginPref *pref;
pref = g_new0(PurplePluginPref, 1);
return pref;
}
PurplePluginPref *
purple_plugin_pref_new_with_name(const char *name)
{
PurplePluginPref *pref;
g_return_val_if_fail(name != NULL, NULL);
pref = g_new0(PurplePluginPref, 1);
pref->name = g_strdup(name);
return pref;
}
PurplePluginPref *
purple_plugin_pref_new_with_label(const char *label)
{
PurplePluginPref *pref;
g_return_val_if_fail(label != NULL, NULL);
pref = g_new0(PurplePluginPref, 1);
pref->label = g_strdup(label);
return pref;
}
PurplePluginPref *
purple_plugin_pref_new_with_name_and_label(const char *name, const char *label)
{
PurplePluginPref *pref;
g_return_val_if_fail(name != NULL, NULL);
g_return_val_if_fail(label != NULL, NULL);
pref = g_new0(PurplePluginPref, 1);
pref->name = g_strdup(name);
pref->label = g_strdup(label);
return pref;
}
void
purple_plugin_pref_destroy(PurplePluginPref *pref)
{
GList *tmp;
g_return_if_fail(pref != NULL);
g_free(pref->name);
g_free(pref->label);
tmp = pref->choices;
while(tmp) {
g_free(tmp->data);
/* Remove the string, and the data entries */
tmp = g_list_delete_link(tmp, tmp);
tmp = g_list_delete_link(tmp, tmp);
}
g_free(pref);
}
void
purple_plugin_pref_set_name(PurplePluginPref *pref, const char *name)
{
g_return_if_fail(pref != NULL);
g_return_if_fail(name != NULL);
g_free(pref->name);
pref->name = g_strdup(name);
}
const char *
purple_plugin_pref_get_name(PurplePluginPref *pref)
{
g_return_val_if_fail(pref != NULL, NULL);
return pref->name;
}
void
purple_plugin_pref_set_label(PurplePluginPref *pref, const char *label)
{
g_return_if_fail(pref != NULL);
g_return_if_fail(label != NULL);
g_free(pref->label);
pref->label = g_strdup(label);
}
const char *
purple_plugin_pref_get_label(PurplePluginPref *pref)
{
g_return_val_if_fail(pref != NULL, NULL);
return pref->label;
}
void
purple_plugin_pref_set_bounds(PurplePluginPref *pref, int min, int max)
{
int tmp;
g_return_if_fail(pref != NULL);
g_return_if_fail(pref->name != NULL);
if (purple_prefs_get_type(pref->name) != PURPLE_PREF_INT)
{
purple_debug_warning("pluginpref",
"purple_plugin_pref_set_bounds: %s is not an integer pref\n",
pref->name);
return;
}
if (min > max)
{
tmp = min;
min = max;
max = tmp;
}
pref->min = min;
pref->max = max;
}
void purple_plugin_pref_get_bounds(PurplePluginPref *pref, int *min, int *max)
{
g_return_if_fail(pref != NULL);
g_return_if_fail(pref->name != NULL);
if (purple_prefs_get_type(pref->name) != PURPLE_PREF_INT)
{
purple_debug_warning("pluginpref",
"purple_plugin_pref_get_bounds: %s is not an integer pref\n",
pref->name);
return;
}
*min = pref->min;
*max = pref->max;
}
void
purple_plugin_pref_set_type(PurplePluginPref *pref, PurplePluginPrefType type)
{
g_return_if_fail(pref != NULL);
pref->type = type;
}
PurplePluginPrefType
purple_plugin_pref_get_type(PurplePluginPref *pref)
{
g_return_val_if_fail(pref != NULL, PURPLE_PLUGIN_PREF_NONE);
return pref->type;
}
void
purple_plugin_pref_add_choice(PurplePluginPref *pref, const char *label, gpointer choice)
{
g_return_if_fail(pref != NULL);
g_return_if_fail(label != NULL);
g_return_if_fail(choice || purple_prefs_get_type(pref->name) == PURPLE_PREF_INT);
pref->choices = g_list_append(pref->choices, g_strdup(label));
pref->choices = g_list_append(pref->choices, choice);
}
GList *
purple_plugin_pref_get_choices(PurplePluginPref *pref)
{
g_return_val_if_fail(pref != NULL, NULL);
return pref->choices;
}
void
purple_plugin_pref_set_max_length(PurplePluginPref *pref, unsigned int max_length)
{
g_return_if_fail(pref != NULL);
pref->max_length = max_length;
}
unsigned int
purple_plugin_pref_get_max_length(PurplePluginPref *pref)
{
g_return_val_if_fail(pref != NULL, 0);
return pref->max_length;
}
void
purple_plugin_pref_set_masked(PurplePluginPref *pref, gboolean masked)
{
g_return_if_fail(pref != NULL);
pref->masked = masked;
}
gboolean
purple_plugin_pref_get_masked(PurplePluginPref *pref)
{
g_return_val_if_fail(pref != NULL, FALSE);
return pref->masked;
}
void
purple_plugin_pref_set_format_type(PurplePluginPref *pref, PurpleStringFormatType format)
{
g_return_if_fail(pref != NULL);
g_return_if_fail(pref->type == PURPLE_PLUGIN_PREF_STRING_FORMAT);
pref->format = format;
}
PurpleStringFormatType
purple_plugin_pref_get_format_type(PurplePluginPref *pref)
{
g_return_val_if_fail(pref != NULL, 0);
if (pref->type != PURPLE_PLUGIN_PREF_STRING_FORMAT)
return PURPLE_STRING_FORMAT_TYPE_NONE;
return pref->format;
}