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/* vim:set et sw=2 cin cino=t0,f0,(0,{s,>2s,n-s,^-s,e2s: */
/*
* Copyright © 2019 Collabora Ltd.
*
* SPDX-License-Identifier: LGPL-2.0+
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
*/
#include "config.h"
#include <libglnx.h>
#include "ostree-sign-dummy.h"
#include <string.h>
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "OSTreeSign"
#define OSTREE_SIGN_DUMMY_NAME "dummy"
#define OSTREE_SIGN_METADATA_DUMMY_KEY "ostree.sign.dummy"
#define OSTREE_SIGN_METADATA_DUMMY_TYPE "aay"
struct _OstreeSignDummy
{
GObject parent;
gchar *sk_ascii;
gchar *pk_ascii;
};
#ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
G_DEFINE_AUTOPTR_CLEANUP_FUNC (OstreeSignDummy, g_object_unref)
#endif
static void
ostree_sign_dummy_iface_init (OstreeSignInterface *self);
G_DEFINE_TYPE_WITH_CODE (OstreeSignDummy, _ostree_sign_dummy, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (OSTREE_TYPE_SIGN, ostree_sign_dummy_iface_init));
static gboolean
check_dummy_sign_enabled (GError **error)
{
if (g_strcmp0 (g_getenv ("OSTREE_DUMMY_SIGN_ENABLED"), "1") != 0)
return glnx_throw (error, "dummy signature type is only for ostree testing");
return TRUE;
}
static void
ostree_sign_dummy_iface_init (OstreeSignInterface *self)
{
self->get_name = ostree_sign_dummy_get_name;
self->data = ostree_sign_dummy_data;
self->data_verify = ostree_sign_dummy_data_verify;
self->metadata_key = ostree_sign_dummy_metadata_key;
self->metadata_format = ostree_sign_dummy_metadata_format;
self->set_sk = ostree_sign_dummy_set_sk;
self->set_pk = ostree_sign_dummy_set_pk;
/* Implementation for dummy engine just load the single public key */
self->add_pk = ostree_sign_dummy_set_pk;
}
static void
_ostree_sign_dummy_class_init (OstreeSignDummyClass *self)
{
}
static void
_ostree_sign_dummy_init (OstreeSignDummy *self)
{
self->sk_ascii = NULL;
self->pk_ascii = NULL;
}
gboolean ostree_sign_dummy_set_sk (OstreeSign *self, GVariant *key, GError **error)
{
if (!check_dummy_sign_enabled (error))
return FALSE;
OstreeSignDummy *sign = _ostree_sign_dummy_get_instance_private(OSTREE_SIGN_DUMMY(self));
g_free(sign->sk_ascii);
sign->sk_ascii = g_variant_dup_string (key, 0);
return TRUE;
}
gboolean ostree_sign_dummy_set_pk (OstreeSign *self, GVariant *key, GError **error)
{
OstreeSignDummy *sign = _ostree_sign_dummy_get_instance_private(OSTREE_SIGN_DUMMY(self));
g_free(sign->pk_ascii);
sign->pk_ascii = g_variant_dup_string (key, 0);
return TRUE;
}
gboolean ostree_sign_dummy_data (OstreeSign *self,
GBytes *data,
GBytes **signature,
GCancellable *cancellable,
GError **error)
{
if (!check_dummy_sign_enabled (error))
return FALSE;
g_return_val_if_fail (OSTREE_IS_SIGN (self), FALSE);
OstreeSignDummy *sign = _ostree_sign_dummy_get_instance_private(OSTREE_SIGN_DUMMY(self));
*signature = g_bytes_new (sign->sk_ascii, strlen(sign->sk_ascii));
return TRUE;
}
const gchar * ostree_sign_dummy_get_name (OstreeSign *self)
{
g_return_val_if_fail (OSTREE_IS_SIGN (self), FALSE);
return OSTREE_SIGN_DUMMY_NAME;
}
const gchar * ostree_sign_dummy_metadata_key (OstreeSign *self)
{
return OSTREE_SIGN_METADATA_DUMMY_KEY;
}
const gchar * ostree_sign_dummy_metadata_format (OstreeSign *self)
{
return OSTREE_SIGN_METADATA_DUMMY_TYPE;
}
gboolean ostree_sign_dummy_data_verify (OstreeSign *self,
GBytes *data,
GVariant *signatures,
char **out_success_message,
GError **error)
{
if (!check_dummy_sign_enabled (error))
return FALSE;
g_return_val_if_fail (OSTREE_IS_SIGN (self), FALSE);
g_return_val_if_fail (data != NULL, FALSE);
OstreeSignDummy *sign = _ostree_sign_dummy_get_instance_private(OSTREE_SIGN_DUMMY(self));
if (signatures == NULL)
return glnx_throw (error, "signature: dummy: commit have no signatures of my type");
if (!g_variant_is_of_type (signatures, (GVariantType *) OSTREE_SIGN_METADATA_DUMMY_TYPE))
return glnx_throw (error, "signature: dummy: wrong type passed for verification");
gsize n = g_variant_n_children(signatures);
for (gsize i = 0; i < n; i++)
{
g_autoptr (GVariant) child = g_variant_get_child_value (signatures, i);
g_autoptr (GBytes) signature = g_variant_get_data_as_bytes(child);
gsize sign_size = 0;
g_bytes_get_data (signature, &sign_size);
g_autofree gchar *sign_ascii = g_strndup(g_bytes_get_data (signature, NULL), sign_size);
g_debug("Read signature %d: %s", (gint)i, sign_ascii);
g_debug("Stored signature %d: %s", (gint)i, sign->pk_ascii);
if (!g_strcmp0(sign_ascii, sign->pk_ascii))
{
if (out_success_message)
*out_success_message = g_strdup ("dummy: Signature verified");
return TRUE;
}
}
if (n)
return glnx_throw (error, "signature: dummy: incorrect signatures found: %" G_GSIZE_FORMAT, n);
return glnx_throw (error, "signature: dummy: no signatures");
}
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