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blockchain.cpp
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2508 lines (2269 loc) · 110 KB
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// Copyright (c) 2010 Satoshi Nakamoto
// Copyright (c) 2009-2020 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <rpc/blockchain.h>
#include <amount.h>
#include <blockfilter.h>
#include <chain.h>
#include <chainparams.h>
#include <coins.h>
#include <consensus/validation.h>
#include <core_io.h>
#include <hash.h>
#include <index/blockfilterindex.h>
#include <node/coinstats.h>
#include <node/context.h>
#include <node/utxo_snapshot.h>
#include <policy/feerate.h>
#include <policy/policy.h>
#include <policy/rbf.h>
#include <primitives/transaction.h>
#include <rpc/server.h>
#include <rpc/util.h>
#include <script/descriptor.h>
#include <streams.h>
#include <sync.h>
#include <txdb.h>
#include <txmempool.h>
#include <undo.h>
#include <util/ref.h>
#include <util/strencodings.h>
#include <util/system.h>
#include <util/translation.h>
#include <validation.h>
#include <validationinterface.h>
#include <warnings.h>
#include <stdint.h>
#include <univalue.h>
#include <condition_variable>
#include <memory>
#include <mutex>
struct CUpdatedBlock
{
uint256 hash;
int height;
};
static Mutex cs_blockchange;
static std::condition_variable cond_blockchange;
static CUpdatedBlock latestblock GUARDED_BY(cs_blockchange);
NodeContext& EnsureNodeContext(const util::Ref& context)
{
if (!context.Has<NodeContext>()) {
throw JSONRPCError(RPC_INTERNAL_ERROR, "Node context not found");
}
return context.Get<NodeContext>();
}
CTxMemPool& EnsureMemPool(const util::Ref& context)
{
NodeContext& node = EnsureNodeContext(context);
if (!node.mempool) {
throw JSONRPCError(RPC_CLIENT_MEMPOOL_DISABLED, "Mempool disabled or instance not found");
}
return *node.mempool;
}
ChainstateManager& EnsureChainman(const util::Ref& context)
{
NodeContext& node = EnsureNodeContext(context);
if (!node.chainman) {
throw JSONRPCError(RPC_INTERNAL_ERROR, "Node chainman not found");
}
return *node.chainman;
}
/* Calculate the difficulty for a given block index.
*/
double GetDifficulty(const CBlockIndex* blockindex)
{
CHECK_NONFATAL(blockindex);
int nShift = (blockindex->nBits >> 24) & 0xff;
double dDiff =
(double)0x0000ffff / (double)(blockindex->nBits & 0x00ffffff);
while (nShift < 29)
{
dDiff *= 256.0;
nShift++;
}
while (nShift > 29)
{
dDiff /= 256.0;
nShift--;
}
return dDiff;
}
static int ComputeNextBlockAndDepth(const CBlockIndex* tip, const CBlockIndex* blockindex, const CBlockIndex*& next)
{
next = tip->GetAncestor(blockindex->nHeight + 1);
if (next && next->pprev == blockindex) {
return tip->nHeight - blockindex->nHeight + 1;
}
next = nullptr;
return blockindex == tip ? 1 : -1;
}
UniValue blockheaderToJSON(const CBlockIndex* tip, const CBlockIndex* blockindex)
{
// Serialize passed information without accessing chain state of the active chain!
AssertLockNotHeld(cs_main); // For performance reasons
UniValue result(UniValue::VOBJ);
result.pushKV("hash", blockindex->GetBlockHash().GetHex());
const CBlockIndex* pnext;
int confirmations = ComputeNextBlockAndDepth(tip, blockindex, pnext);
result.pushKV("confirmations", confirmations);
result.pushKV("height", blockindex->nHeight);
result.pushKV("version", blockindex->nVersion);
result.pushKV("versionHex", strprintf("%08x", blockindex->nVersion));
result.pushKV("merkleroot", blockindex->hashMerkleRoot.GetHex());
result.pushKV("time", (int64_t)blockindex->nTime);
result.pushKV("mediantime", (int64_t)blockindex->GetMedianTimePast());
result.pushKV("nonce", (uint64_t)blockindex->nNonce);
result.pushKV("bits", strprintf("%08x", blockindex->nBits));
result.pushKV("difficulty", GetDifficulty(blockindex));
result.pushKV("chainwork", blockindex->nChainWork.GetHex());
result.pushKV("nTx", (uint64_t)blockindex->nTx);
if (blockindex->pprev)
result.pushKV("previousblockhash", blockindex->pprev->GetBlockHash().GetHex());
if (pnext)
result.pushKV("nextblockhash", pnext->GetBlockHash().GetHex());
return result;
}
UniValue blockToJSON(const CBlock& block, const CBlockIndex* tip, const CBlockIndex* blockindex, bool txDetails)
{
// Serialize passed information without accessing chain state of the active chain!
AssertLockNotHeld(cs_main); // For performance reasons
UniValue result(UniValue::VOBJ);
result.pushKV("hash", blockindex->GetBlockHash().GetHex());
const CBlockIndex* pnext;
int confirmations = ComputeNextBlockAndDepth(tip, blockindex, pnext);
result.pushKV("confirmations", confirmations);
result.pushKV("strippedsize", (int)::GetSerializeSize(block, PROTOCOL_VERSION | SERIALIZE_TRANSACTION_NO_WITNESS));
result.pushKV("size", (int)::GetSerializeSize(block, PROTOCOL_VERSION));
result.pushKV("weight", (int)::GetBlockWeight(block));
result.pushKV("height", blockindex->nHeight);
result.pushKV("version", block.nVersion);
result.pushKV("versionHex", strprintf("%08x", block.nVersion));
result.pushKV("merkleroot", block.hashMerkleRoot.GetHex());
UniValue txs(UniValue::VARR);
for(const auto& tx : block.vtx)
{
if(txDetails)
{
UniValue objTx(UniValue::VOBJ);
TxToUniv(*tx, uint256(), objTx, true, RPCSerializationFlags());
txs.push_back(objTx);
}
else
txs.push_back(tx->GetHash().GetHex());
}
result.pushKV("tx", txs);
result.pushKV("time", block.GetBlockTime());
result.pushKV("mediantime", (int64_t)blockindex->GetMedianTimePast());
result.pushKV("nonce", (uint64_t)block.nNonce);
result.pushKV("bits", strprintf("%08x", block.nBits));
result.pushKV("difficulty", GetDifficulty(blockindex));
result.pushKV("chainwork", blockindex->nChainWork.GetHex());
result.pushKV("nTx", (uint64_t)blockindex->nTx);
if (blockindex->pprev)
result.pushKV("previousblockhash", blockindex->pprev->GetBlockHash().GetHex());
if (pnext)
result.pushKV("nextblockhash", pnext->GetBlockHash().GetHex());
return result;
}
static RPCHelpMan getblockcount()
{
return RPCHelpMan{"getblockcount",
"\nReturns the height of the most-work fully-validated chain.\n"
"The genesis block has height 0.\n",
{},
RPCResult{
RPCResult::Type::NUM, "", "The current block count"},
RPCExamples{
HelpExampleCli("getblockcount", "")
+ HelpExampleRpc("getblockcount", "")
},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
LOCK(cs_main);
return ::ChainActive().Height();
},
};
}
static RPCHelpMan getbestblockhash()
{
return RPCHelpMan{"getbestblockhash",
"\nReturns the hash of the best (tip) block in the most-work fully-validated chain.\n",
{},
RPCResult{
RPCResult::Type::STR_HEX, "", "the block hash, hex-encoded"},
RPCExamples{
HelpExampleCli("getbestblockhash", "")
+ HelpExampleRpc("getbestblockhash", "")
},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
LOCK(cs_main);
return ::ChainActive().Tip()->GetBlockHash().GetHex();
},
};
}
void RPCNotifyBlockChange(const CBlockIndex* pindex)
{
if(pindex) {
LOCK(cs_blockchange);
latestblock.hash = pindex->GetBlockHash();
latestblock.height = pindex->nHeight;
}
cond_blockchange.notify_all();
}
static RPCHelpMan waitfornewblock()
{
return RPCHelpMan{"waitfornewblock",
"\nWaits for a specific new block and returns useful info about it.\n"
"\nReturns the current block on timeout or exit.\n",
{
{"timeout", RPCArg::Type::NUM, /* default */ "0", "Time in milliseconds to wait for a response. 0 indicates no timeout."},
},
RPCResult{
RPCResult::Type::OBJ, "", "",
{
{RPCResult::Type::STR_HEX, "hash", "The blockhash"},
{RPCResult::Type::NUM, "height", "Block height"},
}},
RPCExamples{
HelpExampleCli("waitfornewblock", "1000")
+ HelpExampleRpc("waitfornewblock", "1000")
},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
int timeout = 0;
if (!request.params[0].isNull())
timeout = request.params[0].get_int();
CUpdatedBlock block;
{
WAIT_LOCK(cs_blockchange, lock);
block = latestblock;
if(timeout)
cond_blockchange.wait_for(lock, std::chrono::milliseconds(timeout), [&block]() EXCLUSIVE_LOCKS_REQUIRED(cs_blockchange) {return latestblock.height != block.height || latestblock.hash != block.hash || !IsRPCRunning(); });
else
cond_blockchange.wait(lock, [&block]() EXCLUSIVE_LOCKS_REQUIRED(cs_blockchange) {return latestblock.height != block.height || latestblock.hash != block.hash || !IsRPCRunning(); });
block = latestblock;
}
UniValue ret(UniValue::VOBJ);
ret.pushKV("hash", block.hash.GetHex());
ret.pushKV("height", block.height);
return ret;
},
};
}
static RPCHelpMan waitforblock()
{
return RPCHelpMan{"waitforblock",
"\nWaits for a specific new block and returns useful info about it.\n"
"\nReturns the current block on timeout or exit.\n",
{
{"blockhash", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "Block hash to wait for."},
{"timeout", RPCArg::Type::NUM, /* default */ "0", "Time in milliseconds to wait for a response. 0 indicates no timeout."},
},
RPCResult{
RPCResult::Type::OBJ, "", "",
{
{RPCResult::Type::STR_HEX, "hash", "The blockhash"},
{RPCResult::Type::NUM, "height", "Block height"},
}},
RPCExamples{
HelpExampleCli("waitforblock", "\"0000000000079f8ef3d2c688c244eb7a4570b24c9ed7b4a8c619eb02596f8862\" 1000")
+ HelpExampleRpc("waitforblock", "\"0000000000079f8ef3d2c688c244eb7a4570b24c9ed7b4a8c619eb02596f8862\", 1000")
},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
int timeout = 0;
uint256 hash(ParseHashV(request.params[0], "blockhash"));
if (!request.params[1].isNull())
timeout = request.params[1].get_int();
CUpdatedBlock block;
{
WAIT_LOCK(cs_blockchange, lock);
if(timeout)
cond_blockchange.wait_for(lock, std::chrono::milliseconds(timeout), [&hash]() EXCLUSIVE_LOCKS_REQUIRED(cs_blockchange) {return latestblock.hash == hash || !IsRPCRunning();});
else
cond_blockchange.wait(lock, [&hash]() EXCLUSIVE_LOCKS_REQUIRED(cs_blockchange) {return latestblock.hash == hash || !IsRPCRunning(); });
block = latestblock;
}
UniValue ret(UniValue::VOBJ);
ret.pushKV("hash", block.hash.GetHex());
ret.pushKV("height", block.height);
return ret;
},
};
}
static RPCHelpMan waitforblockheight()
{
return RPCHelpMan{"waitforblockheight",
"\nWaits for (at least) block height and returns the height and hash\n"
"of the current tip.\n"
"\nReturns the current block on timeout or exit.\n",
{
{"height", RPCArg::Type::NUM, RPCArg::Optional::NO, "Block height to wait for."},
{"timeout", RPCArg::Type::NUM, /* default */ "0", "Time in milliseconds to wait for a response. 0 indicates no timeout."},
},
RPCResult{
RPCResult::Type::OBJ, "", "",
{
{RPCResult::Type::STR_HEX, "hash", "The blockhash"},
{RPCResult::Type::NUM, "height", "Block height"},
}},
RPCExamples{
HelpExampleCli("waitforblockheight", "100 1000")
+ HelpExampleRpc("waitforblockheight", "100, 1000")
},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
int timeout = 0;
int height = request.params[0].get_int();
if (!request.params[1].isNull())
timeout = request.params[1].get_int();
CUpdatedBlock block;
{
WAIT_LOCK(cs_blockchange, lock);
if(timeout)
cond_blockchange.wait_for(lock, std::chrono::milliseconds(timeout), [&height]() EXCLUSIVE_LOCKS_REQUIRED(cs_blockchange) {return latestblock.height >= height || !IsRPCRunning();});
else
cond_blockchange.wait(lock, [&height]() EXCLUSIVE_LOCKS_REQUIRED(cs_blockchange) {return latestblock.height >= height || !IsRPCRunning(); });
block = latestblock;
}
UniValue ret(UniValue::VOBJ);
ret.pushKV("hash", block.hash.GetHex());
ret.pushKV("height", block.height);
return ret;
},
};
}
static RPCHelpMan syncwithvalidationinterfacequeue()
{
return RPCHelpMan{"syncwithvalidationinterfacequeue",
"\nWaits for the validation interface queue to catch up on everything that was there when we entered this function.\n",
{},
RPCResult{RPCResult::Type::NONE, "", ""},
RPCExamples{
HelpExampleCli("syncwithvalidationinterfacequeue","")
+ HelpExampleRpc("syncwithvalidationinterfacequeue","")
},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
SyncWithValidationInterfaceQueue();
return NullUniValue;
},
};
}
static RPCHelpMan getdifficulty()
{
return RPCHelpMan{"getdifficulty",
"\nReturns the proof-of-work difficulty as a multiple of the minimum difficulty.\n",
{},
RPCResult{
RPCResult::Type::NUM, "", "the proof-of-work difficulty as a multiple of the minimum difficulty."},
RPCExamples{
HelpExampleCli("getdifficulty", "")
+ HelpExampleRpc("getdifficulty", "")
},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
LOCK(cs_main);
return GetDifficulty(::ChainActive().Tip());
},
};
}
static std::vector<RPCResult> MempoolEntryDescription() { return {
RPCResult{RPCResult::Type::NUM, "vsize", "virtual transaction size as defined in BIP 141. This is different from actual serialized size for witness transactions as witness data is discounted."},
RPCResult{RPCResult::Type::NUM, "weight", "transaction weight as defined in BIP 141."},
RPCResult{RPCResult::Type::STR_AMOUNT, "fee", "transaction fee in " + CURRENCY_UNIT + " (DEPRECATED)"},
RPCResult{RPCResult::Type::STR_AMOUNT, "modifiedfee", "transaction fee with fee deltas used for mining priority (DEPRECATED)"},
RPCResult{RPCResult::Type::NUM_TIME, "time", "local time transaction entered pool in seconds since 1 Jan 1970 GMT"},
RPCResult{RPCResult::Type::NUM, "height", "block height when transaction entered pool"},
RPCResult{RPCResult::Type::NUM, "descendantcount", "number of in-mempool descendant transactions (including this one)"},
RPCResult{RPCResult::Type::NUM, "descendantsize", "virtual transaction size of in-mempool descendants (including this one)"},
RPCResult{RPCResult::Type::STR_AMOUNT, "descendantfees", "modified fees (see above) of in-mempool descendants (including this one) (DEPRECATED)"},
RPCResult{RPCResult::Type::NUM, "ancestorcount", "number of in-mempool ancestor transactions (including this one)"},
RPCResult{RPCResult::Type::NUM, "ancestorsize", "virtual transaction size of in-mempool ancestors (including this one)"},
RPCResult{RPCResult::Type::STR_AMOUNT, "ancestorfees", "modified fees (see above) of in-mempool ancestors (including this one) (DEPRECATED)"},
RPCResult{RPCResult::Type::STR_HEX, "wtxid", "hash of serialized transaction, including witness data"},
RPCResult{RPCResult::Type::OBJ, "fees", "",
{
RPCResult{RPCResult::Type::STR_AMOUNT, "base", "transaction fee in " + CURRENCY_UNIT},
RPCResult{RPCResult::Type::STR_AMOUNT, "modified", "transaction fee with fee deltas used for mining priority in " + CURRENCY_UNIT},
RPCResult{RPCResult::Type::STR_AMOUNT, "ancestor", "modified fees (see above) of in-mempool ancestors (including this one) in " + CURRENCY_UNIT},
RPCResult{RPCResult::Type::STR_AMOUNT, "descendant", "modified fees (see above) of in-mempool descendants (including this one) in " + CURRENCY_UNIT},
}},
RPCResult{RPCResult::Type::ARR, "depends", "unconfirmed transactions used as inputs for this transaction",
{RPCResult{RPCResult::Type::STR_HEX, "transactionid", "parent transaction id"}}},
RPCResult{RPCResult::Type::ARR, "spentby", "unconfirmed transactions spending outputs from this transaction",
{RPCResult{RPCResult::Type::STR_HEX, "transactionid", "child transaction id"}}},
RPCResult{RPCResult::Type::BOOL, "bip125-replaceable", "Whether this transaction could be replaced due to BIP125 (replace-by-fee)"},
RPCResult{RPCResult::Type::BOOL, "unbroadcast", "Whether this transaction is currently unbroadcast (initial broadcast not yet acknowledged by any peers)"},
};}
static void entryToJSON(const CTxMemPool& pool, UniValue& info, const CTxMemPoolEntry& e) EXCLUSIVE_LOCKS_REQUIRED(pool.cs)
{
AssertLockHeld(pool.cs);
UniValue fees(UniValue::VOBJ);
fees.pushKV("base", ValueFromAmount(e.GetFee()));
fees.pushKV("modified", ValueFromAmount(e.GetModifiedFee()));
fees.pushKV("ancestor", ValueFromAmount(e.GetModFeesWithAncestors()));
fees.pushKV("descendant", ValueFromAmount(e.GetModFeesWithDescendants()));
info.pushKV("fees", fees);
info.pushKV("vsize", (int)e.GetTxSize());
info.pushKV("weight", (int)e.GetTxWeight());
info.pushKV("fee", ValueFromAmount(e.GetFee()));
info.pushKV("modifiedfee", ValueFromAmount(e.GetModifiedFee()));
info.pushKV("time", count_seconds(e.GetTime()));
info.pushKV("height", (int)e.GetHeight());
info.pushKV("descendantcount", e.GetCountWithDescendants());
info.pushKV("descendantsize", e.GetSizeWithDescendants());
info.pushKV("descendantfees", e.GetModFeesWithDescendants());
info.pushKV("ancestorcount", e.GetCountWithAncestors());
info.pushKV("ancestorsize", e.GetSizeWithAncestors());
info.pushKV("ancestorfees", e.GetModFeesWithAncestors());
info.pushKV("wtxid", pool.vTxHashes[e.vTxHashesIdx].first.ToString());
const CTransaction& tx = e.GetTx();
std::set<std::string> setDepends;
for (const CTxIn& txin : tx.vin)
{
if (pool.exists(txin.prevout.hash))
setDepends.insert(txin.prevout.hash.ToString());
}
UniValue depends(UniValue::VARR);
for (const std::string& dep : setDepends)
{
depends.push_back(dep);
}
info.pushKV("depends", depends);
UniValue spent(UniValue::VARR);
const CTxMemPool::txiter& it = pool.mapTx.find(tx.GetHash());
const CTxMemPoolEntry::Children& children = it->GetMemPoolChildrenConst();
for (const CTxMemPoolEntry& child : children) {
spent.push_back(child.GetTx().GetHash().ToString());
}
info.pushKV("spentby", spent);
// Add opt-in RBF status
bool rbfStatus = false;
RBFTransactionState rbfState = IsRBFOptIn(tx, pool);
if (rbfState == RBFTransactionState::UNKNOWN) {
throw JSONRPCError(RPC_MISC_ERROR, "Transaction is not in mempool");
} else if (rbfState == RBFTransactionState::REPLACEABLE_BIP125) {
rbfStatus = true;
}
info.pushKV("bip125-replaceable", rbfStatus);
info.pushKV("unbroadcast", pool.IsUnbroadcastTx(tx.GetHash()));
}
UniValue MempoolToJSON(const CTxMemPool& pool, bool verbose, bool include_mempool_sequence)
{
if (verbose) {
if (include_mempool_sequence) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Verbose results cannot contain mempool sequence values.");
}
LOCK(pool.cs);
UniValue o(UniValue::VOBJ);
for (const CTxMemPoolEntry& e : pool.mapTx) {
const uint256& hash = e.GetTx().GetHash();
UniValue info(UniValue::VOBJ);
entryToJSON(pool, info, e);
// Mempool has unique entries so there is no advantage in using
// UniValue::pushKV, which checks if the key already exists in O(N).
// UniValue::__pushKV is used instead which currently is O(1).
o.__pushKV(hash.ToString(), info);
}
return o;
} else {
uint64_t mempool_sequence;
std::vector<uint256> vtxid;
{
LOCK(pool.cs);
pool.queryHashes(vtxid);
mempool_sequence = pool.GetSequence();
}
UniValue a(UniValue::VARR);
for (const uint256& hash : vtxid)
a.push_back(hash.ToString());
if (!include_mempool_sequence) {
return a;
} else {
UniValue o(UniValue::VOBJ);
o.pushKV("txids", a);
o.pushKV("mempool_sequence", mempool_sequence);
return o;
}
}
}
static RPCHelpMan getrawmempool()
{
return RPCHelpMan{"getrawmempool",
"\nReturns all transaction ids in memory pool as a json array of string transaction ids.\n"
"\nHint: use getmempoolentry to fetch a specific transaction from the mempool.\n",
{
{"verbose", RPCArg::Type::BOOL, /* default */ "false", "True for a json object, false for array of transaction ids"},
{"mempool_sequence", RPCArg::Type::BOOL, /* default */ "false", "If verbose=false, returns a json object with transaction list and mempool sequence number attached."},
},
{
RPCResult{"for verbose = false",
RPCResult::Type::ARR, "", "",
{
{RPCResult::Type::STR_HEX, "", "The transaction id"},
}},
RPCResult{"for verbose = true",
RPCResult::Type::OBJ_DYN, "", "",
{
{RPCResult::Type::OBJ, "transactionid", "", MempoolEntryDescription()},
}},
RPCResult{"for verbose = false and mempool_sequence = true",
RPCResult::Type::OBJ, "", "",
{
{RPCResult::Type::ARR, "txids", "",
{
{RPCResult::Type::STR_HEX, "", "The transaction id"},
}},
{RPCResult::Type::NUM, "mempool_sequence", "The mempool sequence value."},
}},
},
RPCExamples{
HelpExampleCli("getrawmempool", "true")
+ HelpExampleRpc("getrawmempool", "true")
},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
bool fVerbose = false;
if (!request.params[0].isNull())
fVerbose = request.params[0].get_bool();
bool include_mempool_sequence = false;
if (!request.params[1].isNull()) {
include_mempool_sequence = request.params[1].get_bool();
}
return MempoolToJSON(EnsureMemPool(request.context), fVerbose, include_mempool_sequence);
},
};
}
static RPCHelpMan getmempoolancestors()
{
return RPCHelpMan{"getmempoolancestors",
"\nIf txid is in the mempool, returns all in-mempool ancestors.\n",
{
{"txid", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The transaction id (must be in mempool)"},
{"verbose", RPCArg::Type::BOOL, /* default */ "false", "True for a json object, false for array of transaction ids"},
},
{
RPCResult{"for verbose = false",
RPCResult::Type::ARR, "", "",
{{RPCResult::Type::STR_HEX, "", "The transaction id of an in-mempool ancestor transaction"}}},
RPCResult{"for verbose = true",
RPCResult::Type::OBJ_DYN, "", "",
{
{RPCResult::Type::OBJ, "transactionid", "", MempoolEntryDescription()},
}},
},
RPCExamples{
HelpExampleCli("getmempoolancestors", "\"mytxid\"")
+ HelpExampleRpc("getmempoolancestors", "\"mytxid\"")
},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
bool fVerbose = false;
if (!request.params[1].isNull())
fVerbose = request.params[1].get_bool();
uint256 hash = ParseHashV(request.params[0], "parameter 1");
const CTxMemPool& mempool = EnsureMemPool(request.context);
LOCK(mempool.cs);
CTxMemPool::txiter it = mempool.mapTx.find(hash);
if (it == mempool.mapTx.end()) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Transaction not in mempool");
}
CTxMemPool::setEntries setAncestors;
uint64_t noLimit = std::numeric_limits<uint64_t>::max();
std::string dummy;
mempool.CalculateMemPoolAncestors(*it, setAncestors, noLimit, noLimit, noLimit, noLimit, dummy, false);
if (!fVerbose) {
UniValue o(UniValue::VARR);
for (CTxMemPool::txiter ancestorIt : setAncestors) {
o.push_back(ancestorIt->GetTx().GetHash().ToString());
}
return o;
} else {
UniValue o(UniValue::VOBJ);
for (CTxMemPool::txiter ancestorIt : setAncestors) {
const CTxMemPoolEntry &e = *ancestorIt;
const uint256& _hash = e.GetTx().GetHash();
UniValue info(UniValue::VOBJ);
entryToJSON(mempool, info, e);
o.pushKV(_hash.ToString(), info);
}
return o;
}
},
};
}
static RPCHelpMan getmempooldescendants()
{
return RPCHelpMan{"getmempooldescendants",
"\nIf txid is in the mempool, returns all in-mempool descendants.\n",
{
{"txid", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The transaction id (must be in mempool)"},
{"verbose", RPCArg::Type::BOOL, /* default */ "false", "True for a json object, false for array of transaction ids"},
},
{
RPCResult{"for verbose = false",
RPCResult::Type::ARR, "", "",
{{RPCResult::Type::STR_HEX, "", "The transaction id of an in-mempool descendant transaction"}}},
RPCResult{"for verbose = true",
RPCResult::Type::OBJ_DYN, "", "",
{
{RPCResult::Type::OBJ, "transactionid", "", MempoolEntryDescription()},
}},
},
RPCExamples{
HelpExampleCli("getmempooldescendants", "\"mytxid\"")
+ HelpExampleRpc("getmempooldescendants", "\"mytxid\"")
},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
bool fVerbose = false;
if (!request.params[1].isNull())
fVerbose = request.params[1].get_bool();
uint256 hash = ParseHashV(request.params[0], "parameter 1");
const CTxMemPool& mempool = EnsureMemPool(request.context);
LOCK(mempool.cs);
CTxMemPool::txiter it = mempool.mapTx.find(hash);
if (it == mempool.mapTx.end()) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Transaction not in mempool");
}
CTxMemPool::setEntries setDescendants;
mempool.CalculateDescendants(it, setDescendants);
// CTxMemPool::CalculateDescendants will include the given tx
setDescendants.erase(it);
if (!fVerbose) {
UniValue o(UniValue::VARR);
for (CTxMemPool::txiter descendantIt : setDescendants) {
o.push_back(descendantIt->GetTx().GetHash().ToString());
}
return o;
} else {
UniValue o(UniValue::VOBJ);
for (CTxMemPool::txiter descendantIt : setDescendants) {
const CTxMemPoolEntry &e = *descendantIt;
const uint256& _hash = e.GetTx().GetHash();
UniValue info(UniValue::VOBJ);
entryToJSON(mempool, info, e);
o.pushKV(_hash.ToString(), info);
}
return o;
}
},
};
}
static RPCHelpMan getmempoolentry()
{
return RPCHelpMan{"getmempoolentry",
"\nReturns mempool data for given transaction\n",
{
{"txid", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The transaction id (must be in mempool)"},
},
RPCResult{
RPCResult::Type::OBJ, "", "", MempoolEntryDescription()},
RPCExamples{
HelpExampleCli("getmempoolentry", "\"mytxid\"")
+ HelpExampleRpc("getmempoolentry", "\"mytxid\"")
},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
uint256 hash = ParseHashV(request.params[0], "parameter 1");
const CTxMemPool& mempool = EnsureMemPool(request.context);
LOCK(mempool.cs);
CTxMemPool::txiter it = mempool.mapTx.find(hash);
if (it == mempool.mapTx.end()) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Transaction not in mempool");
}
const CTxMemPoolEntry &e = *it;
UniValue info(UniValue::VOBJ);
entryToJSON(mempool, info, e);
return info;
},
};
}
static RPCHelpMan getblockhash()
{
return RPCHelpMan{"getblockhash",
"\nReturns hash of block in best-block-chain at height provided.\n",
{
{"height", RPCArg::Type::NUM, RPCArg::Optional::NO, "The height index"},
},
RPCResult{
RPCResult::Type::STR_HEX, "", "The block hash"},
RPCExamples{
HelpExampleCli("getblockhash", "1000")
+ HelpExampleRpc("getblockhash", "1000")
},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
LOCK(cs_main);
int nHeight = request.params[0].get_int();
if (nHeight < 0 || nHeight > ::ChainActive().Height())
throw JSONRPCError(RPC_INVALID_PARAMETER, "Block height out of range");
CBlockIndex* pblockindex = ::ChainActive()[nHeight];
return pblockindex->GetBlockHash().GetHex();
},
};
}
static RPCHelpMan getblockheader()
{
return RPCHelpMan{"getblockheader",
"\nIf verbose is false, returns a string that is serialized, hex-encoded data for blockheader 'hash'.\n"
"If verbose is true, returns an Object with information about blockheader <hash>.\n",
{
{"blockhash", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The block hash"},
{"verbose", RPCArg::Type::BOOL, /* default */ "true", "true for a json object, false for the hex-encoded data"},
},
{
RPCResult{"for verbose = true",
RPCResult::Type::OBJ, "", "",
{
{RPCResult::Type::STR_HEX, "hash", "the block hash (same as provided)"},
{RPCResult::Type::NUM, "confirmations", "The number of confirmations, or -1 if the block is not on the main chain"},
{RPCResult::Type::NUM, "height", "The block height or index"},
{RPCResult::Type::NUM, "version", "The block version"},
{RPCResult::Type::STR_HEX, "versionHex", "The block version formatted in hexadecimal"},
{RPCResult::Type::STR_HEX, "merkleroot", "The merkle root"},
{RPCResult::Type::NUM_TIME, "time", "The block time expressed in " + UNIX_EPOCH_TIME},
{RPCResult::Type::NUM_TIME, "mediantime", "The median block time expressed in " + UNIX_EPOCH_TIME},
{RPCResult::Type::NUM, "nonce", "The nonce"},
{RPCResult::Type::STR_HEX, "bits", "The bits"},
{RPCResult::Type::NUM, "difficulty", "The difficulty"},
{RPCResult::Type::STR_HEX, "chainwork", "Expected number of hashes required to produce the current chain"},
{RPCResult::Type::NUM, "nTx", "The number of transactions in the block"},
{RPCResult::Type::STR_HEX, "previousblockhash", "The hash of the previous block"},
{RPCResult::Type::STR_HEX, "nextblockhash", "The hash of the next block"},
}},
RPCResult{"for verbose=false",
RPCResult::Type::STR_HEX, "", "A string that is serialized, hex-encoded data for block 'hash'"},
},
RPCExamples{
HelpExampleCli("getblockheader", "\"00000000c937983704a73af28acdec37b049d214adbda81d7e2a3dd146f6ed09\"")
+ HelpExampleRpc("getblockheader", "\"00000000c937983704a73af28acdec37b049d214adbda81d7e2a3dd146f6ed09\"")
},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
uint256 hash(ParseHashV(request.params[0], "hash"));
bool fVerbose = true;
if (!request.params[1].isNull())
fVerbose = request.params[1].get_bool();
const CBlockIndex* pblockindex;
const CBlockIndex* tip;
{
LOCK(cs_main);
pblockindex = LookupBlockIndex(hash);
tip = ::ChainActive().Tip();
}
if (!pblockindex) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Block not found");
}
if (!fVerbose)
{
CDataStream ssBlock(SER_NETWORK, PROTOCOL_VERSION);
ssBlock << pblockindex->GetBlockHeader();
std::string strHex = HexStr(ssBlock);
return strHex;
}
return blockheaderToJSON(tip, pblockindex);
},
};
}
static CBlock GetBlockChecked(const CBlockIndex* pblockindex)
{
CBlock block;
if (IsBlockPruned(pblockindex)) {
throw JSONRPCError(RPC_MISC_ERROR, "Block not available (pruned data)");
}
if (!ReadBlockFromDisk(block, pblockindex, Params().GetConsensus())) {
// Block not found on disk. This could be because we have the block
// header in our index but not yet have the block or did not accept the
// block.
throw JSONRPCError(RPC_MISC_ERROR, "Block not found on disk");
}
return block;
}
static CBlockUndo GetUndoChecked(const CBlockIndex* pblockindex)
{
CBlockUndo blockUndo;
if (IsBlockPruned(pblockindex)) {
throw JSONRPCError(RPC_MISC_ERROR, "Undo data not available (pruned data)");
}
if (!UndoReadFromDisk(blockUndo, pblockindex)) {
throw JSONRPCError(RPC_MISC_ERROR, "Can't read undo data from disk");
}
return blockUndo;
}
static RPCHelpMan getblock()
{
return RPCHelpMan{"getblock",
"\nIf verbosity is 0, returns a string that is serialized, hex-encoded data for block 'hash'.\n"
"If verbosity is 1, returns an Object with information about block <hash>.\n"
"If verbosity is 2, returns an Object with information about block <hash> and information about each transaction. \n",
{
{"blockhash", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The block hash"},
{"verbosity|verbose", RPCArg::Type::NUM, /* default */ "1", "0 for hex-encoded data, 1 for a json object, and 2 for json object with transaction data"},
},
{
RPCResult{"for verbosity = 0",
RPCResult::Type::STR_HEX, "", "A string that is serialized, hex-encoded data for block 'hash'"},
RPCResult{"for verbosity = 1",
RPCResult::Type::OBJ, "", "",
{
{RPCResult::Type::STR_HEX, "hash", "the block hash (same as provided)"},
{RPCResult::Type::NUM, "confirmations", "The number of confirmations, or -1 if the block is not on the main chain"},
{RPCResult::Type::NUM, "size", "The block size"},
{RPCResult::Type::NUM, "strippedsize", "The block size excluding witness data"},
{RPCResult::Type::NUM, "weight", "The block weight as defined in BIP 141"},
{RPCResult::Type::NUM, "height", "The block height or index"},
{RPCResult::Type::NUM, "version", "The block version"},
{RPCResult::Type::STR_HEX, "versionHex", "The block version formatted in hexadecimal"},
{RPCResult::Type::STR_HEX, "merkleroot", "The merkle root"},
{RPCResult::Type::ARR, "tx", "The transaction ids",
{{RPCResult::Type::STR_HEX, "", "The transaction id"}}},
{RPCResult::Type::NUM_TIME, "time", "The block time expressed in " + UNIX_EPOCH_TIME},
{RPCResult::Type::NUM_TIME, "mediantime", "The median block time expressed in " + UNIX_EPOCH_TIME},
{RPCResult::Type::NUM, "nonce", "The nonce"},
{RPCResult::Type::STR_HEX, "bits", "The bits"},
{RPCResult::Type::NUM, "difficulty", "The difficulty"},
{RPCResult::Type::STR_HEX, "chainwork", "Expected number of hashes required to produce the chain up to this block (in hex)"},
{RPCResult::Type::NUM, "nTx", "The number of transactions in the block"},
{RPCResult::Type::STR_HEX, "previousblockhash", "The hash of the previous block"},
{RPCResult::Type::STR_HEX, "nextblockhash", "The hash of the next block"},
}},
RPCResult{"for verbosity = 2",
RPCResult::Type::OBJ, "", "",
{
{RPCResult::Type::ELISION, "", "Same output as verbosity = 1"},
{RPCResult::Type::ARR, "tx", "",
{
{RPCResult::Type::OBJ, "", "",
{
{RPCResult::Type::ELISION, "", "The transactions in the format of the getrawtransaction RPC. Different from verbosity = 1 \"tx\" result"},
}},
}},
}},
},
RPCExamples{
HelpExampleCli("getblock", "\"00000000c937983704a73af28acdec37b049d214adbda81d7e2a3dd146f6ed09\"")
+ HelpExampleRpc("getblock", "\"00000000c937983704a73af28acdec37b049d214adbda81d7e2a3dd146f6ed09\"")
},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
uint256 hash(ParseHashV(request.params[0], "blockhash"));
int verbosity = 1;
if (!request.params[1].isNull()) {
if(request.params[1].isNum())
verbosity = request.params[1].get_int();
else
verbosity = request.params[1].get_bool() ? 1 : 0;
}
CBlock block;
const CBlockIndex* pblockindex;
const CBlockIndex* tip;
{
LOCK(cs_main);
pblockindex = LookupBlockIndex(hash);
tip = ::ChainActive().Tip();
if (!pblockindex) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Block not found");
}
block = GetBlockChecked(pblockindex);
}
if (verbosity <= 0)
{
CDataStream ssBlock(SER_NETWORK, PROTOCOL_VERSION | RPCSerializationFlags());
ssBlock << block;
std::string strHex = HexStr(ssBlock);
return strHex;
}
return blockToJSON(block, tip, pblockindex, verbosity >= 2);
},
};
}
static RPCHelpMan pruneblockchain()
{
return RPCHelpMan{"pruneblockchain", "",
{
{"height", RPCArg::Type::NUM, RPCArg::Optional::NO, "The block height to prune up to. May be set to a discrete height, or to a " + UNIX_EPOCH_TIME + "\n"
" to prune blocks whose block time is at least 2 hours older than the provided timestamp."},
},
RPCResult{
RPCResult::Type::NUM, "", "Height of the last block pruned"},
RPCExamples{
HelpExampleCli("pruneblockchain", "1000")
+ HelpExampleRpc("pruneblockchain", "1000")
},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
if (!fPruneMode)
throw JSONRPCError(RPC_MISC_ERROR, "Cannot prune blocks because node is not in prune mode.");
LOCK(cs_main);
int heightParam = request.params[0].get_int();
if (heightParam < 0)
throw JSONRPCError(RPC_INVALID_PARAMETER, "Negative block height.");