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(probably an outdated installation, or a third party SSL plugin).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.
/**
* @file value.c Value wrapper API
* @ingroup core
*/
/* 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
*/
#include "internal.h"
#include "value.h"
#define OUTGOING_FLAG 0x01
PurpleValue *
purple_value_new(PurpleType type, ...)
{
PurpleValue *value;
va_list args;
g_return_val_if_fail(type != PURPLE_TYPE_UNKNOWN, NULL);
value = g_new0(PurpleValue, 1);
value->type = type;
va_start(args, type);
if (type == PURPLE_TYPE_SUBTYPE)
value->u.subtype = va_arg(args, int);
else if (type == PURPLE_TYPE_BOXED)
value->u.specific_type = g_strdup(va_arg(args, char *));
va_end(args);
return value;
}
PurpleValue *
purple_value_new_outgoing(PurpleType type, ...)
{
PurpleValue *value;
va_list args;
g_return_val_if_fail(type != PURPLE_TYPE_UNKNOWN, NULL);
value = g_new0(PurpleValue, 1);
value->type = type;
va_start(args, type);
if (type == PURPLE_TYPE_SUBTYPE)
value->u.subtype = va_arg(args, int);
else if (type == PURPLE_TYPE_BOXED)
value->u.specific_type = g_strdup(va_arg(args, char *));
va_end(args);
value->flags |= OUTGOING_FLAG;
return value;
}
void
purple_value_destroy(PurpleValue *value)
{
g_return_if_fail(value != NULL);
if (purple_value_get_type(value) == PURPLE_TYPE_BOXED)
{
g_free(value->u.specific_type);
}
else if (purple_value_get_type(value) == PURPLE_TYPE_STRING)
{
g_free(value->data.string_data);
}
g_free(value);
}
PurpleValue *
purple_value_dup(const PurpleValue *value)
{
PurpleValue *new_value;
PurpleType type;
g_return_val_if_fail(value != NULL, NULL);
type = purple_value_get_type(value);
if (type == PURPLE_TYPE_SUBTYPE)
{
new_value = purple_value_new(PURPLE_TYPE_SUBTYPE,
purple_value_get_subtype(value));
}
else if (type == PURPLE_TYPE_BOXED)
{
new_value = purple_value_new(PURPLE_TYPE_BOXED,
purple_value_get_specific_type(value));
}
else
new_value = purple_value_new(type);
new_value->flags = value->flags;
switch (type)
{
case PURPLE_TYPE_CHAR:
purple_value_set_char(new_value, purple_value_get_char(value));
break;
case PURPLE_TYPE_UCHAR:
purple_value_set_uchar(new_value, purple_value_get_uchar(value));
break;
case PURPLE_TYPE_BOOLEAN:
purple_value_set_boolean(new_value, purple_value_get_boolean(value));
break;
case PURPLE_TYPE_SHORT:
purple_value_set_short(new_value, purple_value_get_short(value));
break;
case PURPLE_TYPE_USHORT:
purple_value_set_ushort(new_value, purple_value_get_ushort(value));
break;
case PURPLE_TYPE_INT:
purple_value_set_int(new_value, purple_value_get_int(value));
break;
case PURPLE_TYPE_UINT:
purple_value_set_uint(new_value, purple_value_get_uint(value));
break;
case PURPLE_TYPE_LONG:
purple_value_set_long(new_value, purple_value_get_long(value));
break;
case PURPLE_TYPE_ULONG:
purple_value_set_ulong(new_value, purple_value_get_ulong(value));
break;
case PURPLE_TYPE_INT64:
purple_value_set_int64(new_value, purple_value_get_int64(value));
break;
case PURPLE_TYPE_UINT64:
purple_value_set_uint64(new_value, purple_value_get_uint64(value));
break;
case PURPLE_TYPE_STRING:
purple_value_set_string(new_value, purple_value_get_string(value));
break;
case PURPLE_TYPE_OBJECT:
purple_value_set_object(new_value, purple_value_get_object(value));
break;
case PURPLE_TYPE_POINTER:
purple_value_set_pointer(new_value, purple_value_get_pointer(value));
break;
case PURPLE_TYPE_ENUM:
purple_value_set_enum(new_value, purple_value_get_enum(value));
break;
case PURPLE_TYPE_BOXED:
purple_value_set_boxed(new_value, purple_value_get_boxed(value));
break;
default:
break;
}
return new_value;
}
PurpleType
purple_value_get_type(const PurpleValue *value)
{
g_return_val_if_fail(value != NULL, PURPLE_TYPE_UNKNOWN);
return value->type;
}
unsigned int
purple_value_get_subtype(const PurpleValue *value)
{
g_return_val_if_fail(value != NULL, 0);
g_return_val_if_fail(purple_value_get_type(value) == PURPLE_TYPE_SUBTYPE, 0);
return value->u.subtype;
}
const char *
purple_value_get_specific_type(const PurpleValue *value)
{
g_return_val_if_fail(value != NULL, NULL);
g_return_val_if_fail(purple_value_get_type(value) == PURPLE_TYPE_BOXED, NULL);
return value->u.specific_type;
}
gboolean
purple_value_is_outgoing(const PurpleValue *value)
{
g_return_val_if_fail(value != NULL, FALSE);
return (value->flags & OUTGOING_FLAG);
}
void
purple_value_set_char(PurpleValue *value, char data)
{
g_return_if_fail(value != NULL);
value->data.char_data = data;
}
void
purple_value_set_uchar(PurpleValue *value, unsigned char data)
{
g_return_if_fail(value != NULL);
value->data.uchar_data = data;
}
void
purple_value_set_boolean(PurpleValue *value, gboolean data)
{
g_return_if_fail(value != NULL);
value->data.boolean_data = data;
}
void
purple_value_set_short(PurpleValue *value, short data)
{
g_return_if_fail(value != NULL);
value->data.short_data = data;
}
void
purple_value_set_ushort(PurpleValue *value, unsigned short data)
{
g_return_if_fail(value != NULL);
value->data.ushort_data = data;
}
void
purple_value_set_int(PurpleValue *value, int data)
{
g_return_if_fail(value != NULL);
value->data.int_data = data;
}
void
purple_value_set_uint(PurpleValue *value, unsigned int data)
{
g_return_if_fail(value != NULL);
value->data.int_data = data;
}
void
purple_value_set_long(PurpleValue *value, long data)
{
g_return_if_fail(value != NULL);
value->data.long_data = data;
}
void
purple_value_set_ulong(PurpleValue *value, unsigned long data)
{
g_return_if_fail(value != NULL);
value->data.long_data = data;
}
void
purple_value_set_int64(PurpleValue *value, gint64 data)
{
g_return_if_fail(value != NULL);
value->data.int64_data = data;
}
void
purple_value_set_uint64(PurpleValue *value, guint64 data)
{
g_return_if_fail(value != NULL);
value->data.uint64_data = data;
}
void
purple_value_set_string(PurpleValue *value, const char *data)
{
g_return_if_fail(value != NULL);
g_return_if_fail(data == NULL || g_utf8_validate(data, -1, NULL));
g_free(value->data.string_data);
value->data.string_data = g_strdup(data);
}
void
purple_value_set_object(PurpleValue *value, void *data)
{
g_return_if_fail(value != NULL);
value->data.object_data = data;
}
void
purple_value_set_pointer(PurpleValue *value, void *data)
{
g_return_if_fail(value != NULL);
value->data.pointer_data = data;
}
void
purple_value_set_enum(PurpleValue *value, int data)
{
g_return_if_fail(value != NULL);
value->data.enum_data = data;
}
void
purple_value_set_boxed(PurpleValue *value, void *data)
{
g_return_if_fail(value != NULL);
value->data.boxed_data = data;
}
char
purple_value_get_char(const PurpleValue *value)
{
g_return_val_if_fail(value != NULL, 0);
return value->data.char_data;
}
unsigned char
purple_value_get_uchar(const PurpleValue *value)
{
g_return_val_if_fail(value != NULL, 0);
return value->data.uchar_data;
}
gboolean
purple_value_get_boolean(const PurpleValue *value)
{
g_return_val_if_fail(value != NULL, FALSE);
return value->data.boolean_data;
}
short
purple_value_get_short(const PurpleValue *value)
{
g_return_val_if_fail(value != NULL, 0);
return value->data.short_data;
}
unsigned short
purple_value_get_ushort(const PurpleValue *value)
{
g_return_val_if_fail(value != NULL, 0);
return value->data.ushort_data;
}
int
purple_value_get_int(const PurpleValue *value)
{
g_return_val_if_fail(value != NULL, 0);
return value->data.int_data;
}
unsigned int
purple_value_get_uint(const PurpleValue *value)
{
g_return_val_if_fail(value != NULL, 0);
return value->data.int_data;
}
long
purple_value_get_long(const PurpleValue *value)
{
g_return_val_if_fail(value != NULL, 0);
return value->data.long_data;
}
unsigned long
purple_value_get_ulong(const PurpleValue *value)
{
g_return_val_if_fail(value != NULL, 0);
return value->data.long_data;
}
gint64
purple_value_get_int64(const PurpleValue *value)
{
g_return_val_if_fail(value != NULL, 0);
return value->data.int64_data;
}
guint64
purple_value_get_uint64(const PurpleValue *value)
{
g_return_val_if_fail(value != NULL, 0);
return value->data.uint64_data;
}
const char *
purple_value_get_string(const PurpleValue *value)
{
g_return_val_if_fail(value != NULL, NULL);
return value->data.string_data;
}
void *
purple_value_get_object(const PurpleValue *value)
{
g_return_val_if_fail(value != NULL, NULL);
return value->data.object_data;
}
void *
purple_value_get_pointer(const PurpleValue *value)
{
g_return_val_if_fail(value != NULL, NULL);
return value->data.pointer_data;
}
int
purple_value_get_enum(const PurpleValue *value)
{
g_return_val_if_fail(value != NULL, -1);
return value->data.enum_data;
}
void *
purple_value_get_boxed(const PurpleValue *value)
{
g_return_val_if_fail(value != NULL, NULL);
return value->data.boxed_data;
}