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flatpak-auth.c
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flatpak-auth.c
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/* vi:set et sw=2 sts=2 cin cino=t0,f0,(0,{s,>2s,n-s,^-s,e-s:
* Copyright © 2019 Red Hat, Inc
*
* This program 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 2.1 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, see <http:https://www.gnu.org/licenses/>.
*
* Authors:
* Alexander Larsson <[email protected]>
*/
#include "config.h"
#include <glib/gi18n-lib.h>
#include "flatpak-dir-private.h"
#include "flatpak-auth-private.h"
#include "flatpak-utils-private.h"
FlatpakAuthenticator *
flatpak_auth_new_for_remote (FlatpakDir *dir,
const char *remote,
GCancellable *cancellable,
GError **error)
{
g_autofree char *name = NULL;
g_autoptr(AutoFlatpakAuthenticator) authenticator = NULL;
g_autoptr(GVariant) auth_options = NULL;
g_auto(GStrv) keys = NULL;
g_autoptr(GVariantBuilder) auth_options_builder = g_variant_builder_new (G_VARIANT_TYPE ("a{sv}"));
OstreeRepo *repo;
int i;
if (!flatpak_dir_ensure_repo (dir, cancellable, error))
return FALSE;
repo = flatpak_dir_get_repo (dir);
if (repo != NULL)
{
if (!ostree_repo_get_remote_option (repo, remote, FLATPAK_REMOTE_CONFIG_AUTHENTICATOR_NAME, NULL, &name, error))
return NULL;
}
if (name == NULL && flatpak_dir_get_remote_oci (dir, remote))
name = g_strdup ("org.flatpak.Authenticator.Oci");
if (name == NULL || *name == 0 /* or if no repo */)
{
flatpak_fail (error, _("No authenticator configured for remote `%s`"), remote);
return NULL;
}
keys = flatpak_dir_list_remote_config_keys (dir, remote);
for (i = 0; keys != NULL && keys[i] != NULL; i++)
{
const char *key = keys[i];
const char *key_suffix;
g_autofree char *value = NULL;
if (!g_str_has_prefix (key, FLATPAK_REMOTE_CONFIG_AUTHENTICATOR_OPTIONS_PREFIX))
continue;
key_suffix = key + strlen(FLATPAK_REMOTE_CONFIG_AUTHENTICATOR_OPTIONS_PREFIX);
if (key_suffix[0] == 0)
continue;
if (!ostree_repo_get_remote_option (repo, remote, key, NULL, &value, error))
return NULL;
g_variant_builder_add (auth_options_builder, "{sv}", key_suffix, g_variant_new_string(value));
}
auth_options = g_variant_ref_sink (g_variant_builder_end (auth_options_builder));
authenticator = flatpak_authenticator_proxy_new_for_bus_sync (G_BUS_TYPE_SESSION,
G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES | G_DBUS_PROXY_FLAGS_DO_NOT_CONNECT_SIGNALS,
name,
FLATPAK_AUTHENTICATOR_OBJECT_PATH,
cancellable, error);
if (authenticator == NULL)
return NULL;
g_object_set_data_full (G_OBJECT (authenticator), "authenticator-options", g_steal_pointer (&auth_options), (GDestroyNotify)g_variant_unref);
return g_steal_pointer (&authenticator);
}
char *
flatpak_auth_create_request_path (const char *peer,
const char *token,
GError **error)
{
g_autofree gchar *escaped_peer = NULL;
int i;
for (i = 0; token[i]; i++)
{
if (!g_ascii_isalnum (token[i]) && token[i] != '_')
{
flatpak_fail (error, "Invalid token %s", token);
return NULL;
}
}
escaped_peer = g_strdup (peer + 1);
for (i = 0; escaped_peer[i]; i++)
if (escaped_peer[i] == '.')
escaped_peer[i] = '_';
return g_strconcat (FLATPAK_AUTHENTICATOR_REQUEST_OBJECT_PATH_PREFIX, escaped_peer, "/", token, NULL);
}
FlatpakAuthenticatorRequest *
flatpak_auth_create_request (FlatpakAuthenticator *authenticator,
GCancellable *cancellable,
GError **error)
{
static int next_token = 0;
g_autofree char *request_path = NULL;
GDBusConnection *bus;
FlatpakAuthenticatorRequest *request;
g_autofree char *token = NULL;
token = g_strdup_printf ("%d", ++next_token);
bus = g_dbus_proxy_get_connection (G_DBUS_PROXY (authenticator));
request_path = flatpak_auth_create_request_path (g_dbus_connection_get_unique_name (bus), token, error);
if (request_path == NULL)
return NULL;
request = flatpak_authenticator_request_proxy_new_for_bus_sync (G_BUS_TYPE_SESSION,
G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES,
g_dbus_proxy_get_name (G_DBUS_PROXY (authenticator)),
request_path,
cancellable, error);
if (request == NULL)
return NULL;
return request;
}
gboolean
flatpak_auth_request_ref_tokens (FlatpakAuthenticator *authenticator,
FlatpakAuthenticatorRequest *request,
const char *remote,
const char *remote_uri,
GVariant *refs,
GVariant *options,
const char *parent_window,
GCancellable *cancellable,
GError **error)
{
const char *token;
GVariant *auth_options;
g_autofree char *handle = NULL;
token = strrchr (g_dbus_proxy_get_object_path (G_DBUS_PROXY (request)), '/') + 1;
auth_options = g_object_get_data (G_OBJECT (authenticator), "authenticator-options");
if (!flatpak_authenticator_call_request_ref_tokens_sync (authenticator, token, auth_options, remote, remote_uri, refs, options,
parent_window ? parent_window : "",
&handle, cancellable, error))
return FALSE;
if (strcmp (g_dbus_proxy_get_object_path (G_DBUS_PROXY (request)), handle) !=0)
{
/* This shouldn't happen, as it would be a broken authenticator, but lets validate it */
flatpak_fail (error, "Authenticator returned wrong handle");
return FALSE;
}
return TRUE;
}