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handle idempotency/expiration check in purse_merge

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This commit is contained in:
Christian Grothoff 2022-07-05 12:49:03 +02:00
parent ad612623be
commit 82cff16eea
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GPG Key ID: 939E6BE1E29FC3CC
1 changed files with 43 additions and 1 deletions
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44
src/exchange/taler-exchange-httpd_purses_merge.c
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@ -553,7 +553,49 @@ TEH_handler_purses_merge (
if (GNUNET_TIME_absolute_is_past (pcc.purse_expiration.abs_time))
{
// FIXME-BUG: idempotency check, otherwise generate 410!
struct TALER_PurseMergeSignatureP merge_sig;
struct GNUNET_TIME_Timestamp merge_timestamp;
char *partner_url = NULL;
struct TALER_ReservePublicKeyP reserve_pub;
qs = TEH_plugin->select_purse_merge (TEH_plugin->cls,
pcc.purse_pub,
&merge_sig,
&merge_timestamp,
&partner_url,
&reserve_pub);
if (qs <= 0)
{
return TALER_MHD_reply_with_error (connection,
MHD_HTTP_GONE,
TALER_EC_EXCHANGE_GENERIC_PURSE_EXPIRED,
NULL);
}
if (0 !=
GNUNET_memcmp (&merge_sig,
&pcc.merge_sig))
{
MHD_RESULT mhd_res;
mhd_res = TALER_MHD_REPLY_JSON_PACK (
connection,
MHD_HTTP_CONFLICT,
GNUNET_JSON_pack_timestamp ("merge_timestamp",
merge_timestamp),
GNUNET_JSON_pack_data_auto ("merge_sig",
&merge_sig),
GNUNET_JSON_pack_allow_null (
GNUNET_JSON_pack_string ("partner_url",
partner_url)),
GNUNET_JSON_pack_data_auto ("reserve_pub",
&reserve_pub));
GNUNET_free (partner_url);
return mhd_res;
}
GNUNET_free (partner_url);
/* request was idempotent, return success! */
return reply_merge_success (connection,
&pcc);
}
/* execute transaction */