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Refuse chain rollback past a checkpoint (#92)

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This commit is contained in:
Lee *!* Clagett
2024-02-19 13:59:07 -05:00
committed by Lee *!* Clagett
parent d2ca5b4180
commit 55f6bbb386
4 changed files with 76 additions and 50 deletions
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101
src/db/storage.cpp
View File

@@ -409,52 +409,6 @@ namespace db
}
}
//! \return a single instance of compiled-in checkpoints for lws
cryptonote::checkpoints const& get_checkpoints()
{
struct initializer
{
cryptonote::checkpoints data;
initializer()
: data()
{
data.init_default_checkpoints(lws::config::network);
std::string const* genesis_tx = nullptr;
std::uint32_t genesis_nonce = 0;
switch (lws::config::network)
{
case cryptonote::TESTNET:
genesis_tx = std::addressof(::config::testnet::GENESIS_TX);
genesis_nonce = ::config::testnet::GENESIS_NONCE;
break;
case cryptonote::STAGENET:
genesis_tx = std::addressof(::config::stagenet::GENESIS_TX);
genesis_nonce = ::config::stagenet::GENESIS_NONCE;
break;
case cryptonote::MAINNET:
genesis_tx = std::addressof(::config::GENESIS_TX);
genesis_nonce = ::config::GENESIS_NONCE;
break;
default:
MONERO_THROW(lws::error::bad_blockchain, "Unsupported net type");
}
cryptonote::block b;
cryptonote::generate_genesis_block(b, *genesis_tx, genesis_nonce);
crypto::hash block_hash = cryptonote::get_block_hash(b);
if (!data.add_checkpoint(0, epee::to_hex::string(epee::as_byte_span(block_hash))))
MONERO_THROW(lws::error::bad_blockchain, "Genesis tx and checkpoints file mismatch");
}
};
static const initializer instance;
return instance.data;
}
//! \return Current block hash at `id` using `cur`.
expect<crypto::hash> do_get_block_hash(MDB_cursor& cur, block_id id) noexcept
{
@@ -469,7 +423,7 @@ namespace db
cursor::blocks cur = MONERO_UNWRAP(lmdb::open_cursor<cursor::close_blocks>(txn, tbl));
std::map<std::uint64_t, crypto::hash> const& points =
get_checkpoints().get_points();
storage::get_checkpoints().get_points();
if (points.empty() || points.begin()->first != 0)
MONERO_THROW(lws::error::bad_blockchain, "Checkpoints are empty/expected genesis hash");
@@ -558,7 +512,7 @@ namespace db
return success();
};
const std::uint64_t checkpoint = get_checkpoints().get_max_height();
const std::uint64_t checkpoint = lws::db::storage::get_checkpoints().get_max_height();
const std::uint64_t anchor = lmdb::to_native(out.back().id);
for (unsigned i = 1; i <= max_internal; ++i)
@@ -1155,6 +1109,51 @@ namespace db
return nullptr;
}
cryptonote::checkpoints const& storage::get_checkpoints()
{
struct initializer
{
cryptonote::checkpoints data;
initializer()
: data()
{
data.init_default_checkpoints(lws::config::network);
std::string const* genesis_tx = nullptr;
std::uint32_t genesis_nonce = 0;
switch (lws::config::network)
{
case cryptonote::TESTNET:
genesis_tx = std::addressof(::config::testnet::GENESIS_TX);
genesis_nonce = ::config::testnet::GENESIS_NONCE;
break;
case cryptonote::STAGENET:
genesis_tx = std::addressof(::config::stagenet::GENESIS_TX);
genesis_nonce = ::config::stagenet::GENESIS_NONCE;
break;
case cryptonote::MAINNET:
genesis_tx = std::addressof(::config::GENESIS_TX);
genesis_nonce = ::config::GENESIS_NONCE;
break;
default:
MONERO_THROW(lws::error::bad_blockchain, "Unsupported net type");
}
cryptonote::block b;
cryptonote::generate_genesis_block(b, *genesis_tx, genesis_nonce);
crypto::hash block_hash = cryptonote::get_block_hash(b);
if (!data.add_checkpoint(0, epee::to_hex::string(epee::as_byte_span(block_hash))))
MONERO_THROW(lws::error::bad_blockchain, "Genesis tx and checkpoints file mismatch");
}
};
static const initializer instance;
return instance.data;
}
storage storage::open(const char* path, unsigned create_queue_max)
{
return {
@@ -1454,6 +1453,12 @@ namespace db
if (*hash != chain.front())
{
if (current <= get_checkpoints().get_max_height())
{
MERROR("Attempting rollback past last checkpoint; invalid daemon chain response");
return {lws::error::bad_blockchain};
}
MONERO_CHECK(rollback_chain(this->db->tables, txn, *blocks_cur, db::block_id(current)));
break;
}

5
src/db/storage.h
View File

@@ -41,6 +41,7 @@
#include "lmdb/key_stream.h"
#include "lmdb/value_stream.h"
namespace cryptonote { class checkpoints; }
namespace lws
{
namespace db
@@ -167,6 +168,10 @@ namespace db
{}
public:
//! \return A single instance of compiled-in checkpoints for lws
static cryptonote::checkpoints const& get_checkpoints();
/*!
Open a light_wallet_server LDMB database.