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fix #3642

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This commit is contained in:
Christian Grothoff 2015-03-22 17:14:47 +01:00
parent 1d7bb2d091
commit 6c1081f1b5
1 changed files with 22 additions and 0 deletions
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22
src/mint/taler-mint-httpd_refresh.c
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@ -493,6 +493,28 @@ handle_refresh_melt_json (struct MHD_Connection *connection,
GNUNET_free (denom_pubs);
return (GNUNET_NO == res) ? MHD_YES : MHD_NO;
}
/* Check that the client does not try to melt the same coin twice
into the same session! */
for (j=0;j<i;j++)
{
if (0 == memcmp (&coin_public_infos[i].coin_pub,
&coin_public_infos[j].coin_pub,
sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey)))
{
for (j=0;j<i;j++)
{
GNUNET_CRYPTO_rsa_public_key_free (coin_public_infos[j].denom_pub);
GNUNET_CRYPTO_rsa_signature_free (coin_public_infos[j].denom_sig);
}
GNUNET_free (coin_public_infos);
for (j=0;j<num_new_denoms;j++)
GNUNET_CRYPTO_rsa_public_key_free (denom_pubs[j]);
GNUNET_free (coin_melt_details);
GNUNET_free (denom_pubs);
return TALER_MINT_reply_external_error (connection,
"melting same coin twice in same session is not allowed");
}
}
}