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monerod can now sync from pruned blocks

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If the peer (whether pruned or not itself) supports sending pruned blocks
to syncing nodes, the pruned version will be sent along with the hash
of the pruned data and the block weight. The original tx hashes can be
reconstructed from the pruned txes and theur prunable data hash. Those
hashes and the block weights are hashes and checked against the set of
precompiled hashes, ensuring the data we received is the original data.
It is currently not possible to use this system when not using the set
of precompiled hashes, since block weights can not otherwise be checked
for validity.

This is off by default for now, and is enabled by --sync-pruned-blocks
This commit is contained in:
moneromooo-monero 2019-09-16 12:18:34 +00:00
parent d0d76f771a
commit 8330e772f1
No known key found for this signature in database
GPG key ID: 686F07454D6CEFC3
30 changed files with 731 additions and 195 deletions
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18
tests/core_tests/chaingen.h
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@ -544,7 +544,7 @@ public:
cryptonote::tx_verification_context tvc = AUTO_VAL_INIT(tvc);
size_t pool_size = m_c.get_pool_transactions_count();
m_c.handle_incoming_tx(t_serializable_object_to_blob(tx), tvc, m_txs_keeped_by_block, false, false);
m_c.handle_incoming_tx({t_serializable_object_to_blob(tx), crypto::null_hash}, tvc, m_txs_keeped_by_block, false, false);
bool tx_added = pool_size + 1 == m_c.get_pool_transactions_count();
bool r = m_validator.check_tx_verification_context(tvc, tx_added, m_ev_index, tx);
CHECK_AND_NO_ASSERT_MES(r, false, "tx verification context check failed");
@ -555,12 +555,12 @@ public:
{
log_event("cryptonote::transaction");
std::vector<cryptonote::blobdata> tx_blobs;
std::vector<cryptonote::tx_blob_entry> tx_blobs;
std::vector<cryptonote::tx_verification_context> tvcs;
cryptonote::tx_verification_context tvc0 = AUTO_VAL_INIT(tvc0);
for (const auto &tx: txs)
{
tx_blobs.push_back(t_serializable_object_to_blob(tx));
tx_blobs.push_back({t_serializable_object_to_blob(tx)});
tvcs.push_back(tvc0);
}
size_t pool_size = m_c.get_pool_transactions_count();
@ -578,7 +578,11 @@ public:
cryptonote::block_verification_context bvc = AUTO_VAL_INIT(bvc);
cryptonote::blobdata bd = t_serializable_object_to_blob(b);
std::vector<cryptonote::block> pblocks;
if (m_c.prepare_handle_incoming_blocks(std::vector<cryptonote::block_complete_entry>(1, {bd, {}}), pblocks))
cryptonote::block_complete_entry bce;
bce.pruned = false;
bce.block = bd;
bce.txs = {};
if (m_c.prepare_handle_incoming_blocks(std::vector<cryptonote::block_complete_entry>(1, bce), pblocks))
{
m_c.handle_incoming_block(bd, &b, bvc);
m_c.cleanup_handle_incoming_blocks();
@ -608,7 +612,11 @@ public:
cryptonote::block_verification_context bvc = AUTO_VAL_INIT(bvc);
std::vector<cryptonote::block> pblocks;
if (m_c.prepare_handle_incoming_blocks(std::vector<cryptonote::block_complete_entry>(1, {sr_block.data, {}}), pblocks))
cryptonote::block_complete_entry bce;
bce.pruned = false;
bce.block = sr_block.data;
bce.txs = {};
if (m_c.prepare_handle_incoming_blocks(std::vector<cryptonote::block_complete_entry>(1, bce), pblocks))
{
m_c.handle_incoming_block(sr_block.data, NULL, bvc);
m_c.cleanup_handle_incoming_blocks();