implement csr max request elements
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5a47863caf
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251f2b5987
@ -63,7 +63,15 @@ TEH_handler_csr (struct TEH_RequestContext *rc,
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return (GNUNET_SYSERR == res) ? MHD_NO : MHD_YES;
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return (GNUNET_SYSERR == res) ? MHD_NO : MHD_YES;
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}
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}
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csr_requests_num = json_array_size (csr_requests);
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csr_requests_num = json_array_size (csr_requests);
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// FIXME: check number of requests against an upper bound
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if (TALER_MAX_FRESH_COINS <= csr_requests_num)
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{
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return TALER_MHD_reply_with_error (
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rc->connection,
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MHD_HTTP_BAD_REQUEST,
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// FIXME: generalize error message
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TALER_EC_EXCHANGE_REFRESHES_REVEAL_NEW_DENOMS_ARRAY_SIZE_EXCESSIVE,
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NULL);
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}
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struct TALER_CsNonce nonces[GNUNET_NZL (csr_requests_num)];
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struct TALER_CsNonce nonces[GNUNET_NZL (csr_requests_num)];
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struct TALER_DenominationHash denom_pub_hashes[GNUNET_NZL (csr_requests_num)];
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struct TALER_DenominationHash denom_pub_hashes[GNUNET_NZL (csr_requests_num)];
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for (unsigned int i = 0; i < csr_requests_num; i++)
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for (unsigned int i = 0; i < csr_requests_num; i++)
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@ -86,7 +94,6 @@ TEH_handler_csr (struct TEH_RequestContext *rc,
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csr_spec,
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csr_spec,
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i,
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i,
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-1);
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-1);
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GNUNET_JSON_parse_free (csr_spec);
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if (GNUNET_OK != res)
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if (GNUNET_OK != res)
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return (GNUNET_NO == res) ? MHD_YES : MHD_NO;
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return (GNUNET_NO == res) ? MHD_YES : MHD_NO;
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}
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}
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@ -158,6 +165,7 @@ TEH_handler_csr (struct TEH_RequestContext *rc,
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}
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}
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// derive r_pub
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// derive r_pub
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// FIXME: bundle all requests into one derivation request (TEH_keys_..., crypto helper, security module)
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ec = TEH_keys_denomination_cs_r_pub (denom_pub_hash,
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ec = TEH_keys_denomination_cs_r_pub (denom_pub_hash,
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nonce,
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nonce,
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r_pub);
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r_pub);
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@ -31,12 +31,6 @@
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#include "taler-exchange-httpd_keys.h"
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#include "taler-exchange-httpd_keys.h"
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/**
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* Maximum number of fresh coins we allow per refresh operation.
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*/
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#define MAX_FRESH_COINS 256
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/**
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/**
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* Send a response for "/refreshes/$RCH/reveal".
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* Send a response for "/refreshes/$RCH/reveal".
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*
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*
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@ -305,7 +299,7 @@ resolve_refreshes_reveal_denominations (struct MHD_Connection *connection,
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const json_t *coin_evs)
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const json_t *coin_evs)
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{
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{
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unsigned int num_fresh_coins = json_array_size (new_denoms_h_json);
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unsigned int num_fresh_coins = json_array_size (new_denoms_h_json);
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/* We know num_fresh_coins is bounded by #MAX_FRESH_COINS, so this is safe */
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/* We know num_fresh_coins is bounded by #TALER_MAX_FRESH_COINS, so this is safe */
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const struct TEH_DenominationKey *dks[num_fresh_coins];
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const struct TEH_DenominationKey *dks[num_fresh_coins];
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struct TALER_RefreshCoinData rcds[num_fresh_coins];
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struct TALER_RefreshCoinData rcds[num_fresh_coins];
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struct TALER_EXCHANGEDB_RefreshRevealedCoin rrcs[num_fresh_coins];
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struct TALER_EXCHANGEDB_RefreshRevealedCoin rrcs[num_fresh_coins];
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@ -610,7 +604,7 @@ handle_refreshes_reveal_json (struct MHD_Connection *connection,
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unsigned int num_tprivs = json_array_size (tp_json);
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unsigned int num_tprivs = json_array_size (tp_json);
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GNUNET_assert (num_tprivs == TALER_CNC_KAPPA - 1); /* checked just earlier */
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GNUNET_assert (num_tprivs == TALER_CNC_KAPPA - 1); /* checked just earlier */
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if ( (num_fresh_coins >= MAX_FRESH_COINS) ||
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if ( (num_fresh_coins >= TALER_MAX_FRESH_COINS) ||
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(0 == num_fresh_coins) )
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(0 == num_fresh_coins) )
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{
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{
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GNUNET_break_op (0);
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GNUNET_break_op (0);
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@ -1557,6 +1557,12 @@ TALER_planchet_to_coin (const struct TALER_DenominationPublicKey *dk,
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/* ****************** Refresh crypto primitives ************* */
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/* ****************** Refresh crypto primitives ************* */
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/**
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* Maximum number of fresh coins we allow per refresh operation.
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*/
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#define TALER_MAX_FRESH_COINS 256
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/**
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/**
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* Given the coin and the transfer private keys, compute the
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* Given the coin and the transfer private keys, compute the
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* transfer secret. (Technically, we only need one of the two
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* transfer secret. (Technically, we only need one of the two
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