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| author | Christian Grothoff <christian@grothoff.org> | 2016-06-20 10:19:58 +0200 |
|---|---|---|
| committer | Christian Grothoff <christian@grothoff.org> | 2016-06-20 10:19:58 +0200 |
| commit | 029911c757b4557064608ac0e3f27ad7f7a4b82f (patch) | |
| tree | 2c5aea0df74ba33939a8b6832bcb8c9524018f1b /src/exchange-lib/exchange_api_refresh.c | |
| parent | 9fb17b3ca7b9360c1c32d45b180591a3220f9758 (diff) | |
| parent | 17c8741e2049cde4099af3d1d132da3b48e427c5 (diff) | |
| download | exchange-029911c757b4557064608ac0e3f27ad7f7a4b82f.tar.xz | |
Merge branch 'master' of git+ssh://git.taler.net/var/git/exchange
Diffstat (limited to 'src/exchange-lib/exchange_api_refresh.c')
| -rw-r--r-- | src/exchange-lib/exchange_api_refresh.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/exchange-lib/exchange_api_refresh.c b/src/exchange-lib/exchange_api_refresh.c index 9a9c6b7eb..e32f73e21 100644 --- a/src/exchange-lib/exchange_api_refresh.c +++ b/src/exchange-lib/exchange_api_refresh.c @@ -764,6 +764,7 @@ TALER_EXCHANGE_refresh_prepare (const struct TALER_CoinSpendPrivateKeyP *melt_pr unsigned int i; unsigned int j; struct GNUNET_HashContext *hash_context; + struct TALER_Amount total; /* build up melt data structure */ for (i=0;i<TALER_CNC_KAPPA;i++) @@ -799,10 +800,44 @@ TALER_EXCHANGE_refresh_prepare (const struct TALER_CoinSpendPrivateKeyP *melt_pr md.fresh_coins[i] = GNUNET_new_array (fresh_pks_len, struct FreshCoinP); for (j=0;j<fresh_pks_len;j++) + { setup_fresh_coin (&md.fresh_coins[i][j], &fresh_pks[j]); + } } + /* verify that melt_amount is above total cost */ + GNUNET_assert (GNUNET_OK == + TALER_amount_get_zero (melt_amount->currency, + &total)); + for (j=0;j<fresh_pks_len;j++) + { + if ( (GNUNET_OK != + TALER_amount_add (&total, + &total, + &fresh_pks[j].value)) || + (GNUNET_OK != + TALER_amount_add (&total, + &total, + &fresh_pks[j].fee_withdraw)) ) + { + GNUNET_break (0); + free_melt_data (&md); + return NULL; + } + } + if (1 == + TALER_amount_cmp (&total, + melt_amount) ) + { + /* Eh, this operation is more expensive than the + @a melt_amount. This is not OK. */ + GNUNET_break (0); + free_melt_data (&md); + return NULL; + } + + /* now compute melt session hash */ hash_context = GNUNET_CRYPTO_hash_context_start (); for (i=0;i<fresh_pks_len;i++) |