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/*
This file is part of GNU Taler
(C) 2023 Taler Systems SA
GNU Taler is free software; you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation; either version 3,
or (at your option) any later version.
GNU Taler 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 TALER; see the file COPYING. If not,
see <http://www.gnu.org/licenses/>
*/
/**
* @file taler-merchant-httpd_private-post-instances-ID-token.c
* @brief implementing POST /instances/$ID/token request handling
* @author Christian Grothoff
*/
#include "platform.h"
#include "taler-merchant-httpd_private-post-instances-ID-token.h"
#include "taler-merchant-httpd_helper.h"
#include <taler/taler_json_lib.h>
/**
* Default duration for the validity of a login token.
*/
#define DEFAULT_DURATION GNUNET_TIME_UNIT_DAYS
MHD_RESULT
TMH_private_post_instances_ID_token (const struct TMH_RequestHandler *rh,
struct MHD_Connection *connection,
struct TMH_HandlerContext *hc)
{
struct TMH_MerchantInstance *mi = hc->instance;
json_t *jtoken = hc->request_body;
const char *scope;
uint32_t iscope = TMH_AS_NONE;
bool refreshable = false;
struct TALER_MERCHANTDB_LoginTokenP btoken;
struct GNUNET_TIME_Relative duration
= DEFAULT_DURATION;
struct GNUNET_TIME_Timestamp expiration_time;
struct GNUNET_JSON_Specification spec[] = {
GNUNET_JSON_spec_string ("scope",
&scope),
GNUNET_JSON_spec_mark_optional (
GNUNET_JSON_spec_relative_time ("duration",
&duration),
NULL),
GNUNET_JSON_spec_mark_optional (
GNUNET_JSON_spec_bool ("refreshable",
&refreshable),
NULL),
GNUNET_JSON_spec_end ()
};
enum GNUNET_DB_QueryStatus qs;
{
enum GNUNET_GenericReturnValue res;
res = TALER_MHD_parse_json_data (connection,
jtoken,
spec);
if (GNUNET_OK != res)
return (GNUNET_NO == res) ? MHD_YES : MHD_NO;
}
GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_NONCE,
&btoken,
sizeof (btoken));
expiration_time = GNUNET_TIME_relative_to_timestamp (duration);
if (0 == strcasecmp (scope,
"readonly"))
iscope = TMH_AS_READ_ONLY;
else if (0 == strcasecmp (scope,
"write"))
iscope = TMH_AS_ALL;
else
{
GNUNET_break_op (0);
return TALER_MHD_reply_with_ec (connection,
TALER_EC_GENERIC_PARAMETER_MALFORMED,
"scope");
}
if (refreshable)
iscope |= TMH_AS_REFRESHABLE;
if (0 != (iscope & (~hc->auth_scope)))
{
/* more permissions requested for the new token, not allowed */
GNUNET_break_op (0);
return TALER_MHD_reply_with_ec (connection,
TALER_EC_GENERIC_TOKEN_PERMISSION_INSUFFICIENT,
NULL);
}
qs = TMH_db->insert_login_token (TMH_db->cls,
mi->settings.id,
&btoken,
GNUNET_TIME_timestamp_get (),
expiration_time,
iscope);
switch (qs)
{
case GNUNET_DB_STATUS_HARD_ERROR:
case GNUNET_DB_STATUS_SOFT_ERROR:
case GNUNET_DB_STATUS_SUCCESS_NO_RESULTS:
GNUNET_break (0);
return TALER_MHD_reply_with_ec (connection,
TALER_EC_GENERIC_DB_STORE_FAILED,
"insert_login_token");
case GNUNET_DB_STATUS_SUCCESS_ONE_RESULT:
break;
}
{
char *tok;
MHD_RESULT ret;
char *val;
val = GNUNET_STRINGS_data_to_string_alloc (&btoken,
sizeof (btoken));
GNUNET_asprintf (&tok,
RFC_8959_PREFIX "%s",
val);
GNUNET_free (val);
ret = TALER_MHD_REPLY_JSON_PACK (
connection,
MHD_HTTP_OK,
GNUNET_JSON_pack_string ("token",
tok),
GNUNET_JSON_pack_string ("scope",
scope),
GNUNET_JSON_pack_bool ("refreshable",
refreshable),
GNUNET_JSON_pack_timestamp ("expiration",
expiration_time));
GNUNET_free (tok);
return ret;
}
}
/* end of taler-merchant-httpd_private-post-instances-ID-token.c */
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