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wallet: add a set_ring command

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This is so one can set rings for spent key images in case the
attackers don't merge the ring matching patch set.
This commit is contained in:
moneromooo-monero 2018-02-28 18:26:06 +00:00
parent 0590f62ab6
commit b09e5181cc
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GPG key ID: 686F07454D6CEFC3
6 changed files with 124 additions and 1 deletions
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30
src/wallet/ringdb.cpp
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@ -340,6 +340,36 @@ bool ringdb::get_ring(const crypto::chacha_key &chacha_key, const crypto::key_im
return true;
}
bool ringdb::set_ring(const crypto::chacha_key &chacha_key, const crypto::key_image &key_image, const std::vector<uint64_t> &outs, bool relative)
{
MDB_txn *txn;
int dbr;
bool tx_active = false;
dbr = resize_env(env, filename.c_str(), outs.size() * 64);
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to set env map size: " + std::string(mdb_strerror(dbr)));
dbr = mdb_txn_begin(env, NULL, 0, &txn);
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to create LMDB transaction: " + std::string(mdb_strerror(dbr)));
epee::misc_utils::auto_scope_leave_caller txn_dtor = epee::misc_utils::create_scope_leave_handler([&](){if (tx_active) mdb_txn_abort(txn);});
tx_active = true;
MDB_val key, data;
std::string key_ciphertext = encrypt(key_image, chacha_key);
key.mv_data = (void*)key_ciphertext.data();
key.mv_size = key_ciphertext.size();
std::string compressed_ring = compress_ring(relative ? outs : cryptonote::absolute_output_offsets_to_relative(outs));
std::string data_ciphertext = encrypt(compressed_ring, key_image, chacha_key);
data.mv_size = data_ciphertext.size();
data.mv_data = (void*)data_ciphertext.c_str();
dbr = mdb_put(txn, dbi_rings, &key, &data, 0);
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to set ring for key image in LMDB table: " + std::string(mdb_strerror(dbr)));
dbr = mdb_txn_commit(txn);
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to commit txn setting ring to database: " + std::string(mdb_strerror(dbr)));
tx_active = false;
return true;
}
bool ringdb::blackball_worker(const crypto::public_key &output, int op)
{
MDB_txn *txn;