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cryptonote: make sure outPk setup always happens

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This commit is contained in:
moneromooo-monero 2018-05-06 12:00:42 +01:00
parent af6febaa83
commit ede213f65c
No known key found for this signature in database
GPG Key ID: 686F07454D6CEFC3
2 changed files with 37 additions and 33 deletions
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37
src/cryptonote_basic/cryptonote_format_utils.cpp
View File

@ -124,6 +124,40 @@ namespace cryptonote
return h;
}
//---------------------------------------------------------------
bool expand_transaction_1(transaction &tx, bool base_only)
{
if (tx.version >= 2 && !is_coinbase(tx))
{
rct::rctSig &rv = tx.rct_signatures;
if (rv.outPk.size() != tx.vout.size())
{
LOG_PRINT_L1("Failed to parse transaction from blob, bad outPk size in tx " << get_transaction_hash(tx));
return false;
}
for (size_t n = 0; n < tx.rct_signatures.outPk.size(); ++n)
rv.outPk[n].dest = rct::pk2rct(boost::get<txout_to_key>(tx.vout[n].target).key);
if (!base_only)
{
const bool bulletproof = rv.type == rct::RCTTypeFullBulletproof || rv.type == rct::RCTTypeSimpleBulletproof;
if (bulletproof)
{
if (rv.p.bulletproofs.size() != tx.vout.size())
{
LOG_PRINT_L1("Failed to parse transaction from blob, bad bulletproofs size in tx " << get_transaction_hash(tx));
return false;
}
for (size_t n = 0; n < rv.outPk.size(); ++n)
{
rv.p.bulletproofs[n].V.resize(1);
rv.p.bulletproofs[n].V[0] = rv.outPk[n].mask;
}
}
}
}
return true;
}
//---------------------------------------------------------------
bool parse_and_validate_tx_from_blob(const blobdata& tx_blob, transaction& tx)
{
std::stringstream ss;
@ -131,6 +165,7 @@ namespace cryptonote
binary_archive<false> ba(ss);
bool r = ::serialization::serialize(ba, tx);
CHECK_AND_ASSERT_MES(r, false, "Failed to parse transaction from blob");
CHECK_AND_ASSERT_MES(expand_transaction_1(tx, false), false, "Failed to expand transaction data");
tx.invalidate_hashes();
return true;
}
@ -142,6 +177,7 @@ namespace cryptonote
binary_archive<false> ba(ss);
bool r = tx.serialize_base(ba);
CHECK_AND_ASSERT_MES(r, false, "Failed to parse transaction from blob");
CHECK_AND_ASSERT_MES(expand_transaction_1(tx, true), false, "Failed to expand transaction data");
return true;
}
//---------------------------------------------------------------
@ -152,6 +188,7 @@ namespace cryptonote
binary_archive<false> ba(ss);
bool r = ::serialization::serialize(ba, tx);
CHECK_AND_ASSERT_MES(r, false, "Failed to parse transaction from blob");
CHECK_AND_ASSERT_MES(expand_transaction_1(tx, false), false, "Failed to expand transaction data");
tx.invalidate_hashes();
//TODO: validate tx

33
src/cryptonote_core/cryptonote_core.cpp
View File

@ -650,39 +650,6 @@ namespace cryptonote
return false;
}
// resolve outPk references in rct txes
// outPk aren't the only thing that need resolving for a fully resolved tx,
// but outPk (1) are needed now to check range proof semantics, and
// (2) do not need access to the blockchain to find data
if (tx.version >= 2)
{
rct::rctSig &rv = tx.rct_signatures;
if (rv.outPk.size() != tx.vout.size())
{
LOG_PRINT_L1("WRONG TRANSACTION BLOB, Bad outPk size in tx " << tx_hash << ", rejected");
tvc.m_verifivation_failed = true;
return false;
}
for (size_t n = 0; n < tx.rct_signatures.outPk.size(); ++n)
rv.outPk[n].dest = rct::pk2rct(boost::get<txout_to_key>(tx.vout[n].target).key);
const bool bulletproof = rv.type == rct::RCTTypeFullBulletproof || rv.type == rct::RCTTypeSimpleBulletproof;
if (bulletproof)
{
if (rv.p.bulletproofs.size() != tx.vout.size())
{
LOG_PRINT_L1("WRONG TRANSACTION BLOB, Bad bulletproofs size in tx " << tx_hash << ", rejected");
tvc.m_verifivation_failed = true;
return false;
}
for (size_t n = 0; n < rv.outPk.size(); ++n)
{
rv.p.bulletproofs[n].V.resize(1);
rv.p.bulletproofs[n].V[0] = rv.outPk[n].mask;
}
}
}
if (keeped_by_block && get_blockchain_storage().is_within_compiled_block_hash_area())
{
MTRACE("Skipping semantics check for tx kept by block in embedded hash area");