Files
thehub/hub/server/rpcblockchain.cpp
2026-05-14 23:31:17 +02:00

833 lines
35 KiB
C++

/*
* This file is part of the Flowee project
* Copyright (C) 2010 Satoshi Nakamoto
* Copyright (C) 2009-2015 The Bitcoin Core developers
* Copyright (C) 2018-2021 Tom Zander <tom@flowee.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "SettingsDefaults.h"
#include "chain.h"
#include "chainparams.h"
#include "checkpoints.h"
#include "consensus/validation.h"
#include "main.h"
#include "policy/policy.h"
#include "primitives/transaction.h"
#include "primitives/Block.h"
#include "rpcserver.h"
#include "streaming/streams.h"
#include "sync.h"
#include "txmempool.h"
#include "BlocksDB.h"
#include "timedata.h"
#include "util.h"
#include "utilstrencodings.h"
#include "UnspentOutputData.h"
#include "primitives/MutableBlock.h"
#include <Application.h>
#include <validation/Engine.h>
#include <validation/VerifyDB.h>
#include <BitcoinVersion.h>
#include <boost/foreach.hpp>
extern void TxToJSON(const CTransaction& tx, const uint256 hashBlock, UniValue& entry);
void ScriptPubKeyToJSON(const CScript& scriptPubKey, UniValue& out, bool fIncludeHex);
double GetDifficulty(const CBlockIndex* blockindex)
{
// Floating point number that is a multiple of the minimum difficulty,
// minimum difficulty = 1.0.
if (blockindex == NULL)
{
if (chainActive.Tip() == NULL)
return 1.0;
else
blockindex = chainActive.Tip();
}
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;
}
UniValue blockheaderToJSON(const CBlockIndex* blockindex)
{
UniValue result(UniValue::VOBJ);
result.push_back(Pair("hash", blockindex->GetBlockHash().GetHex()));
int confirmations = -1;
// Only report confirmations if the block is on the main chain
if (chainActive.Contains(blockindex))
confirmations = chainActive.Height() - blockindex->nHeight + 1;
result.push_back(Pair("confirmations", confirmations));
result.push_back(Pair("height", blockindex->nHeight));
result.push_back(Pair("version", blockindex->nVersion));
result.push_back(Pair("merkleroot", blockindex->hashMerkleRoot.GetHex()));
result.push_back(Pair("time", (int64_t)blockindex->nTime));
result.push_back(Pair("mediantime", (int64_t)blockindex->GetMedianTimePast()));
result.push_back(Pair("nonce", (uint64_t)blockindex->nNonce));
result.push_back(Pair("bits", strprintf("%08x", blockindex->nBits)));
result.push_back(Pair("difficulty", GetDifficulty(blockindex)));
result.push_back(Pair("chainwork", blockindex->nChainWork.GetHex()));
if (blockindex->pprev)
result.push_back(Pair("previousblockhash", blockindex->pprev->GetBlockHash().GetHex()));
CBlockIndex *pnext = chainActive.Next(blockindex);
if (pnext)
result.push_back(Pair("nextblockhash", pnext->GetBlockHash().GetHex()));
return result;
}
UniValue blockToJSON(const MutableBlock& block, const CBlockIndex* blockindex, bool txDetails = false)
{
UniValue result(UniValue::VOBJ);
result.push_back(Pair("hash", block.createHash().GetHex()));
int confirmations = -1;
// Only report confirmations if the block is on the main chain
if (chainActive.Contains(blockindex))
confirmations = chainActive.Height() - blockindex->nHeight + 1;
result.push_back(Pair("confirmations", confirmations));
result.push_back(Pair("size", (int)::GetSerializeSize(block, SER_NETWORK, PROTOCOL_VERSION)));
result.push_back(Pair("height", blockindex->nHeight));
result.push_back(Pair("version", block.nVersion));
result.push_back(Pair("merkleroot", block.hashMerkleRoot.GetHex()));
UniValue txs(UniValue::VARR);
BOOST_FOREACH(const CTransaction&tx, block.vtx)
{
if(txDetails)
{
UniValue objTx(UniValue::VOBJ);
TxToJSON(tx, uint256(), objTx);
txs.push_back(objTx);
}
else
txs.push_back(tx.GetHash().GetHex());
}
result.push_back(Pair("tx", txs));
result.push_back(Pair("time", block.blockTime()));
result.push_back(Pair("mediantime", (int64_t)blockindex->GetMedianTimePast()));
result.push_back(Pair("nonce", (uint64_t)block.nNonce));
result.push_back(Pair("bits", strprintf("%08x", block.nBits)));
result.push_back(Pair("difficulty", GetDifficulty(blockindex)));
result.push_back(Pair("chainwork", blockindex->nChainWork.GetHex()));
if (blockindex->pprev)
result.push_back(Pair("previousblockhash", blockindex->pprev->GetBlockHash().GetHex()));
CBlockIndex *pnext = chainActive.Next(blockindex);
if (pnext)
result.push_back(Pair("nextblockhash", pnext->GetBlockHash().GetHex()));
return result;
}
UniValue getblockcount(const UniValue& params, bool fHelp)
{
if (fHelp || params.size() != 0)
throw std::runtime_error(
"getblockcount\n"
"\nReturns the number of blocks in the longest block chain.\n"
"\nResult:\n"
"n (numeric) The current block count\n"
"\nExamples:\n"
+ HelpExampleCli("getblockcount", "")
+ HelpExampleRpc("getblockcount", "")
);
LOCK(cs_main);
return chainActive.Height();
}
UniValue getbestblockhash(const UniValue& params, bool fHelp)
{
if (fHelp || params.size() != 0)
throw std::runtime_error(
"getbestblockhash\n"
"\nReturns the hash of the best (tip) block in the longest block chain.\n"
"\nResult\n"
"\"hex\" (string) the block hash hex encoded\n"
"\nExamples\n"
+ HelpExampleCli("getbestblockhash", "")
+ HelpExampleRpc("getbestblockhash", "")
);
LOCK(cs_main);
return chainActive.Tip()->GetBlockHash().GetHex();
}
UniValue getdifficulty(const UniValue& params, bool fHelp)
{
if (fHelp || params.size() != 0)
throw std::runtime_error(
"getdifficulty\n"
"\nReturns the proof-of-work difficulty as a multiple of the minimum difficulty.\n"
"\nResult:\n"
"n.nnn (numeric) the proof-of-work difficulty as a multiple of the minimum difficulty.\n"
"\nExamples:\n"
+ HelpExampleCli("getdifficulty", "")
+ HelpExampleRpc("getdifficulty", "")
);
LOCK(cs_main);
return GetDifficulty();
}
UniValue mempoolToJSON(bool fVerbose = false)
{
if (fVerbose)
{
LOCK(mempool.cs);
UniValue o(UniValue::VOBJ);
BOOST_FOREACH(const CTxMemPoolEntry& e, mempool.mapTx)
{
const uint256& hash = e.GetTx().GetHash();
UniValue info(UniValue::VOBJ);
info.push_back(Pair("size", (int)e.GetTxSize()));
info.push_back(Pair("fee", ValueFromAmount(e.GetFee())));
info.push_back(Pair("modifiedfee", ValueFromAmount(e.GetModifiedFee())));
info.push_back(Pair("time", e.GetTime()));
info.push_back(Pair("height", (int)e.GetHeight()));
info.push_back(Pair("startingpriority", e.GetPriority(e.GetHeight())));
info.push_back(Pair("currentpriority", e.GetPriority(chainActive.Height())));
info.push_back(Pair("descendantcount", e.GetCountWithDescendants()));
info.push_back(Pair("descendantsize", e.GetSizeWithDescendants()));
info.push_back(Pair("descendantfees", e.GetModFeesWithDescendants()));
const CTransaction& tx = e.GetTx();
std::set<std::string> setDepends;
BOOST_FOREACH(const CTxIn& txin, tx.vin)
{
if (mempool.exists(txin.prevout.hash))
setDepends.insert(txin.prevout.hash.ToString());
}
UniValue depends(UniValue::VARR);
BOOST_FOREACH(const std::string& dep, setDepends)
{
depends.push_back(dep);
}
info.push_back(Pair("depends", depends));
o.push_back(Pair(hash.ToString(), info));
}
return o;
}
else
{
std::vector<uint256> vtxid;
mempool.queryHashes(vtxid);
UniValue a(UniValue::VARR);
BOOST_FOREACH(const uint256& hash, vtxid)
a.push_back(hash.ToString());
return a;
}
}
UniValue getrawmempool(const UniValue& params, bool fHelp)
{
if (fHelp || params.size() > 1)
throw std::runtime_error(
"getrawmempool ( verbose )\n"
"\nReturns all transaction ids in memory pool as a json array of string transaction ids.\n"
"\nArguments:\n"
"1. verbose (boolean, optional, default=false) true for a json object, false for array of transaction ids\n"
"\nResult: (for verbose = false):\n"
"[ (json array of string)\n"
" \"transactionid\" (string) The transaction id\n"
" ,...\n"
"]\n"
"\nResult: (for verbose = true):\n"
"{ (json object)\n"
" \"transactionid\" : { (json object)\n"
" \"size\" : n, (numeric) transaction size in bytes\n"
" \"fee\" : n, (numeric) transaction fee in BCH\n"
" \"modifiedfee\" : n, (numeric) transaction fee with fee deltas used for mining priority\n"
" \"time\" : n, (numeric) local time transaction entered pool in seconds since 1 Jan 1970 GMT\n"
" \"height\" : n, (numeric) block height when transaction entered pool\n"
" \"startingpriority\" : n, (numeric) priority when transaction entered pool\n"
" \"currentpriority\" : n, (numeric) transaction priority now\n"
" \"descendantcount\" : n, (numeric) number of in-mempool descendant transactions (including this one)\n"
" \"descendantsize\" : n, (numeric) size of in-mempool descendants (including this one)\n"
" \"descendantfees\" : n, (numeric) modified fees (see above) of in-mempool descendants (including this one)\n"
" \"depends\" : [ (array) unconfirmed transactions used as inputs for this transaction\n"
" \"transactionid\", (string) parent transaction id\n"
" ... ]\n"
" }, ...\n"
"}\n"
"\nExamples\n"
+ HelpExampleCli("getrawmempool", "true")
+ HelpExampleRpc("getrawmempool", "true")
);
LOCK(cs_main);
bool fVerbose = false;
if (params.size() > 0)
fVerbose = params[0].get_bool();
return mempoolToJSON(fVerbose);
}
UniValue getblockhash(const UniValue& params, bool fHelp)
{
if (fHelp || params.size() != 1)
throw std::runtime_error(
"getblockhash index\n"
"\nReturns hash of block in best-block-chain at index provided.\n"
"\nArguments:\n"
"1. index (numeric, required) The block index\n"
"\nResult:\n"
"\"hash\" (string) The block hash\n"
"\nExamples:\n"
+ HelpExampleCli("getblockhash", "1000")
+ HelpExampleRpc("getblockhash", "1000")
);
LOCK(cs_main);
int nHeight = 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();
}
UniValue getblockheader(const UniValue& params, bool fHelp)
{
if (fHelp || params.size() < 1 || params.size() > 2)
throw std::runtime_error(
"getblockheader \"hash\" ( verbose )\n"
"\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"
"\nArguments:\n"
"1. \"hash\" (string, required) The block hash\n"
"2. verbose (boolean, optional, default=true) true for a json object, false for the hex encoded data\n"
"\nResult (for verbose = true):\n"
"{\n"
" \"hash\" : \"hash\", (string) the block hash (same as provided)\n"
" \"confirmations\" : n, (numeric) The number of confirmations, or -1 if the block is not on the main chain\n"
" \"height\" : n, (numeric) The block height or index\n"
" \"version\" : n, (numeric) The block version\n"
" \"merkleroot\" : \"xxxx\", (string) The merkle root\n"
" \"time\" : ttt, (numeric) The block time in seconds since epoch (Jan 1 1970 GMT)\n"
" \"mediantime\" : ttt, (numeric) The median block time in seconds since epoch (Jan 1 1970 GMT)\n"
" \"nonce\" : n, (numeric) The nonce\n"
" \"bits\" : \"1d00ffff\", (string) The bits\n"
" \"difficulty\" : x.xxx, (numeric) The difficulty\n"
" \"previousblockhash\" : \"hash\", (string) The hash of the previous block\n"
" \"nextblockhash\" : \"hash\", (string) The hash of the next block\n"
" \"chainwork\" : \"0000...1f3\" (string) Expected number of hashes required to produce the current chain (in hex)\n"
"}\n"
"\nResult (for verbose=false):\n"
"\"data\" (string) A string that is serialized, hex-encoded data for block 'hash'.\n"
"\nExamples:\n"
+ HelpExampleCli("getblockheader", "\"00000000c937983704a73af28acdec37b049d214adbda81d7e2a3dd146f6ed09\"")
+ HelpExampleRpc("getblockheader", "\"00000000c937983704a73af28acdec37b049d214adbda81d7e2a3dd146f6ed09\"")
);
LOCK(cs_main);
std::string strHash = params[0].get_str();
uint256 hash(uint256S(strHash));
bool fVerbose = true;
if (params.size() > 1)
fVerbose = params[1].get_bool();
CBlockIndex* pblockindex = Blocks::Index::get(hash);
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.begin(), ssBlock.end());
return strHex;
}
return blockheaderToJSON(pblockindex);
}
UniValue getblock(const UniValue& params, bool fHelp)
{
if (fHelp || params.size() < 1 || params.size() > 2)
throw std::runtime_error(
"getblock \"hash\" ( verbose )\n"
"\nIf verbose is false, returns a string that is serialized, hex-encoded data for block 'hash'.\n"
"If verbose is true, returns an Object with information about block <hash>.\n"
"\nArguments:\n"
"1. \"hash\" (string, required) The block hash\n"
"2. verbose (boolean, optional, default=true) true for a json object, false for the hex encoded data\n"
"\nResult (for verbose = true):\n"
"{\n"
" \"hash\" : \"hash\", (string) the block hash (same as provided)\n"
" \"confirmations\" : n, (numeric) The number of confirmations, or -1 if the block is not on the main chain\n"
" \"size\" : n, (numeric) The block size\n"
" \"height\" : n, (numeric) The block height or index\n"
" \"version\" : n, (numeric) The block version\n"
" \"merkleroot\" : \"xxxx\", (string) The merkle root\n"
" \"tx\" : [ (array of string) The transaction ids\n"
" \"transactionid\" (string) The transaction id\n"
" ,...\n"
" ],\n"
" \"time\" : ttt, (numeric) The block time in seconds since epoch (Jan 1 1970 GMT)\n"
" \"mediantime\" : ttt, (numeric) The median block time in seconds since epoch (Jan 1 1970 GMT)\n"
" \"nonce\" : n, (numeric) The nonce\n"
" \"bits\" : \"1d00ffff\", (string) The bits\n"
" \"difficulty\" : x.xxx, (numeric) The difficulty\n"
" \"chainwork\" : \"xxxx\", (string) Expected number of hashes required to produce the chain up to this block (in hex)\n"
" \"previousblockhash\" : \"hash\", (string) The hash of the previous block\n"
" \"nextblockhash\" : \"hash\" (string) The hash of the next block\n"
"}\n"
"\nResult (for verbose=false):\n"
"\"data\" (string) A string that is serialized, hex-encoded data for block 'hash'.\n"
"\nExamples:\n"
+ HelpExampleCli("getblock", "\"00000000c937983704a73af28acdec37b049d214adbda81d7e2a3dd146f6ed09\"")
+ HelpExampleRpc("getblock", "\"00000000c937983704a73af28acdec37b049d214adbda81d7e2a3dd146f6ed09\"")
);
LOCK(cs_main);
std::string strHash = params[0].get_str();
uint256 hash(uint256S(strHash));
bool fVerbose = true;
if (params.size() > 1)
fVerbose = params[1].get_bool();
CBlockIndex* pblockindex = Blocks::Index::get(hash);
if (!pblockindex)
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Block not found");
MutableBlock block;
if(!ReadBlockFromDisk(block, pblockindex, Params().GetConsensus()))
throw JSONRPCError(RPC_INTERNAL_ERROR, "Can't read block from disk");
if (!fVerbose)
{
CDataStream ssBlock(SER_NETWORK, PROTOCOL_VERSION);
ssBlock << block;
std::string strHex = HexStr(ssBlock.begin(), ssBlock.end());
return strHex;
}
return blockToJSON(block, pblockindex);
}
UniValue gettxout(const UniValue& params, bool fHelp)
{
if (fHelp || params.size() < 2 || params.size() > 3)
throw std::runtime_error(
"gettxout \"txid\" n ( includemempool )\n"
"\nReturns details about an unspent transaction output.\n"
"\nArguments:\n"
"1. \"txid\" (string, required) The transaction id\n"
"2. n (numeric, required) vout value\n"
"3. includemempool (boolean, optional) Whether to included the mem pool\n"
"\nResult:\n"
"{\n"
" \"bestblock\" : \"hash\", (string) the block hash\n"
" \"confirmations\" : n, (numeric) The number of confirmations\n"
" \"value\" : x.xxx, (numeric) The transaction value in BCH\n"
" \"scriptPubKey\" : { (json object)\n"
" \"asm\" : \"code\", (string) \n"
" \"hex\" : \"hex\", (string) \n"
" \"reqSigs\" : n, (numeric) Number of required signatures\n"
" \"type\" : \"pubkeyhash\", (string) The type, eg pubkeyhash\n"
" \"addresses\" : [ (array of string) array of bitcoin addresses\n"
" \"bitcoinaddress\" (string) bitcoin address\n"
" ,...\n"
" ]\n"
" },\n"
" \"version\" : n, (numeric) The version\n"
" \"coinbase\" : true|false (boolean) Coinbase or not\n"
"}\n"
"\nExamples:\n"
"\nGet unspent transactions\n"
+ HelpExampleCli("listunspent", "") +
"\nView the details\n"
+ HelpExampleCli("gettxout", "\"txid\" 1") +
"\nAs a json rpc call\n"
+ HelpExampleRpc("gettxout", "\"txid\", 1")
);
LOCK(cs_main);
UniValue ret(UniValue::VOBJ);
std::string strHash = params[0].get_str();
uint256 hash(uint256S(strHash));
int n = params[1].get_int();
bool fMempool = true;
if (params.size() > 2)
fMempool = params[2].get_bool();
int confirmedHeight;
std::uint64_t value = -1;
CScript outScript;
int version;
bool isCoinbase;
bool found = false;
if (fMempool) {
LOCK(mempool.cs);
CTransaction tx;
if (mempool.lookup(hash, tx) && tx.vout.size() > n) { // found it!
confirmedHeight = MEMPOOL_HEIGHT;
value = tx.vout[n].nValue;
outScript = tx.vout[n].scriptPubKey;
version = tx.nVersion;
isCoinbase = n == 0;
found = true;
}
}
if (!found) {
auto result = g_utxo->find(hash, n);
if (result.isValid()) {
auto data = UnspentOutputData::fromUtxoDB(result);
confirmedHeight = data.blockHeight;
value = data.outputValue;
outScript = data.outputScript();
version = data.prevTxVersion;
isCoinbase = data.isCoinbase;
found = true;
}
}
if (!found)
return NullUniValue;
CBlockIndex *pindex = Blocks::Index::get(g_utxo->blockId());
assert(pindex);
ret.push_back(Pair("bestblock", pindex->GetBlockHash().GetHex()));
if ((unsigned int)confirmedHeight == MEMPOOL_HEIGHT)
ret.push_back(Pair("confirmations", 0));
else
ret.push_back(Pair("confirmations", pindex->nHeight - confirmedHeight + 1));
ret.push_back(Pair("value", ValueFromAmount(value)));
UniValue o(UniValue::VOBJ);
ScriptPubKeyToJSON(outScript, o, true);
ret.push_back(Pair("scriptPubKey", o));
ret.push_back(Pair("version", version));
ret.push_back(Pair("coinbase", isCoinbase));
return ret;
}
UniValue verifychain(const UniValue& params, bool fHelp)
{
int nCheckLevel = GetArg("-checklevel", Settings::DefaultCheckLevel);
int nCheckDepth = GetArg("-checkblocks", Settings::DefaultCheckBlocks);
if (fHelp || params.size() > 2)
throw std::runtime_error(
"verifychain ( checklevel numblocks )\n"
"\nVerifies blockchain database.\n"
"\nArguments:\n"
"1. checklevel (numeric, optional, 0-4, default=" + strprintf("%d", nCheckLevel) + ") How thorough the block verification is.\n"
"2. numblocks (numeric, optional, default=" + strprintf("%d", nCheckDepth) + ", 0=all) The number of blocks to check.\n"
"\nResult:\n"
"true|false (boolean) Verified or not\n"
"\nExamples:\n"
+ HelpExampleCli("verifychain", "")
+ HelpExampleRpc("verifychain", "")
);
if (params.size() > 0)
nCheckLevel = params[0].get_int();
if (params.size() > 1)
nCheckDepth = params[1].get_int();
return VerifyDB().verifyDB(nCheckLevel, nCheckDepth);
}
UniValue getblockchaininfo(const UniValue& params, bool fHelp)
{
if (fHelp || params.size() != 0)
throw std::runtime_error(
"getblockchaininfo\n"
"Returns an object containing various state info regarding block chain processing.\n"
"\nResult:\n"
"{\n"
" \"chain\": \"xxxx\", (string) current network name as defined in BIP70 (main, test, regtest)\n"
" \"blocks\": xxxxxx, (numeric) the current number of blocks processed in the server\n"
" \"headers\": xxxxxx, (numeric) the current number of headers we have validated\n"
" \"bestblockhash\": \"...\", (string) the hash of the currently best block\n"
" \"difficulty\": xxxxxx, (numeric) the current difficulty\n"
" \"mediantime\": xxxxxx, (numeric) median time for the current best block\n"
" \"verificationprogress\": xxxx, (numeric) estimate of verification progress [0..1]\n"
" \"chainwork\": \"xxxx\" (string) total amount of work in active chain, in hexadecimal\n"
" \"pruned\": xx, (boolean) if the blocks are subject to pruning\n"
" \"pruneheight\": xxxxxx, (numeric) heighest block available\n"
" \"softforks\": [ (array) status of softforks in progress\n"
" {\n"
" \"id\": \"xxxx\", (string) name of softfork\n"
" \"version\": xx, (numeric) block version\n"
" \"enforce\": { (object) progress toward enforcing the softfork rules for new-version blocks\n"
" \"status\": xx, (boolean) true if threshold reached\n"
" \"found\": xx, (numeric) number of blocks with the new version found\n"
" \"required\": xx, (numeric) number of blocks required to trigger\n"
" \"window\": xx, (numeric) maximum size of examined window of recent blocks\n"
" },\n"
" \"reject\": { ... } (object) progress toward rejecting pre-softfork blocks (same fields as \"enforce\")\n"
" }, ...\n"
" ],\n"
" \"bip9_softforks\": [ (array) status of BIP9 softforks in progress\n"
" {\n"
" \"id\": \"xxxx\", (string) name of the softfork\n"
" \"status\": \"xxxx\", (string) one of \"defined\", \"started\", \"lockedin\", \"active\", \"failed\"\n"
" }\n"
" ]\n"
"}\n"
"\nExamples:\n"
+ HelpExampleCli("getblockchaininfo", "")
+ HelpExampleRpc("getblockchaininfo", "")
);
LOCK(cs_main);
UniValue obj(UniValue::VOBJ);
obj.push_back(Pair("chain", Params().NetworkIDString()));
obj.push_back(Pair("blocks", (int)chainActive.Height()));
obj.push_back(Pair("headers", pindexBestHeader ? pindexBestHeader->nHeight : -1));
obj.push_back(Pair("bestblockhash", chainActive.Tip()->GetBlockHash().GetHex()));
obj.push_back(Pair("difficulty", (double)GetDifficulty()));
obj.push_back(Pair("mediantime", (int64_t)chainActive.Tip()->GetMedianTimePast()));
obj.push_back(Pair("verificationprogress", Checkpoints::GuessVerificationProgress(Params().Checkpoints(), chainActive.Tip())));
obj.push_back(Pair("chainwork", chainActive.Tip()->nChainWork.GetHex()));
obj.push_back(Pair("initialblockdownload",
(Blocks::DB::instance()->headerChain().Height() - chainActive.Height() > 1000)));
obj.push_back(Pair("pruned", false));
return obj;
}
/** Comparison function for sorting the getchaintips heads. */
struct CompareBlocksByHeight
{
bool operator()(const CBlockIndex* a, const CBlockIndex* b) const
{
/* Make sure that unequal blocks with the same height do not compare
equal. Use the pointers themselves to make a distinction. */
if (a->nHeight != b->nHeight)
return (a->nHeight > b->nHeight);
return a < b;
}
};
UniValue getchaintips(const UniValue& params, bool fHelp)
{
if (fHelp || params.size() != 0)
throw std::runtime_error(
"getchaintips\n"
"Return information about all known tips in the block tree,"
" including the main chain as well as orphaned branches.\n"
"\nResult:\n"
"[\n"
" {\n"
" \"height\": xxxx, (numeric) height of the chain tip\n"
" \"hash\": \"xxxx\", (string) block hash of the tip\n"
" \"branchlen\": 0 (numeric) zero for main chain\n"
" \"status\": \"active\" (string) \"active\" for the main chain\n"
" },\n"
" {\n"
" \"height\": xxxx,\n"
" \"hash\": \"xxxx\",\n"
" \"branchlen\": 1 (numeric) length of branch connecting the tip to the main chain\n"
" \"status\": \"xxxx\" (string) status of the chain (active, valid-fork, valid-headers, headers-only, invalid)\n"
" }\n"
"]\n"
"Possible values for status:\n"
"1. \"invalid\" This branch contains at least one invalid block\n"
"2. \"headers-only\" Not all blocks for this branch are available, but the headers are valid\n"
"3. \"valid-headers\" All blocks are available for this branch, but they were never fully validated\n"
"4. \"valid-fork\" This branch is not part of the active chain, but is fully validated\n"
"5. \"active\" This is the tip of the active main chain, which is certainly valid\n"
"\nExamples:\n"
+ HelpExampleCli("getchaintips", "")
+ HelpExampleRpc("getchaintips", "")
);
LOCK(cs_main);
/* Build up a list of chain tips. We start with the list of all
known blocks, and successively remove blocks that appear as pprev
of another block. */
std::set<const CBlockIndex*, CompareBlocksByHeight> setTips;
for (auto index : Blocks::DB::instance()->headerChainTips()) {
setTips.insert(index);
}
/* Construct the output array. */
UniValue res(UniValue::VARR);
BOOST_FOREACH(const CBlockIndex* block, setTips)
{
UniValue obj(UniValue::VOBJ);
obj.push_back(Pair("height", block->nHeight));
obj.push_back(Pair("hash", block->phashBlock->GetHex()));
const int branchLen = block->nHeight - chainActive.FindFork(block)->nHeight;
obj.push_back(Pair("branchlen", branchLen));
std::string status;
if (chainActive.Contains(block)) {
// This block is part of the currently active chain.
status = "active";
} else if (block->nStatus & BLOCK_FAILED_MASK) {
// This block or one of its ancestors is invalid.
status = "invalid";
} else if (block->nChainTx == 0) {
// This block cannot be connected because full block data for it or one of its parents is missing.
status = "headers-only";
} else if (block->IsValid(BLOCK_VALID_SCRIPTS)) {
// This block is fully validated, but no longer part of the active chain. It was probably the active block once, but was reorganized.
status = "valid-fork";
} else if (block->IsValid(BLOCK_VALID_TREE)) {
// The headers for this block are valid, but it has not been validated. It was probably never part of the most-work chain.
status = "valid-headers";
} else {
// No clue.
status = "unknown";
}
obj.push_back(Pair("status", status));
res.push_back(obj);
}
return res;
}
UniValue mempoolInfoToJSON()
{
UniValue ret(UniValue::VOBJ);
ret.push_back(Pair("size", (int64_t) mempool.size()));
ret.push_back(Pair("bytes", (int64_t) mempool.GetTotalTxSize()));
ret.push_back(Pair("usage", (int64_t) mempool.DynamicMemoryUsage()));
size_t maxmempool = GetArg("-maxmempool", Settings::DefaultMaxMempoolSize) * 1000000;
ret.push_back(Pair("maxmempool", (int64_t) maxmempool));
ret.push_back(Pair("mempoolminfee", ValueFromAmount(mempool.GetMinFee().GetFeePerK())));
return ret;
}
UniValue getmempoolinfo(const UniValue& params, bool fHelp)
{
if (fHelp || params.size() != 0)
throw std::runtime_error(
"getmempoolinfo\n"
"\nReturns details on the active state of the TX memory pool.\n"
"\nResult:\n"
"{\n"
" \"size\": xxxxx, (numeric) Current tx count\n"
" \"bytes\": xxxxx, (numeric) Sum of all tx sizes\n"
" \"usage\": xxxxx, (numeric) Total memory usage for the mempool\n"
" \"maxmempool\": xxxxx, (numeric) Maximum memory usage for the mempool\n"
" \"mempoolminfee\": xxxxx (numeric) Minimum fee for tx to be accepted\n"
"}\n"
"\nExamples:\n"
+ HelpExampleCli("getmempoolinfo", "")
+ HelpExampleRpc("getmempoolinfo", "")
);
return mempoolInfoToJSON();
}
UniValue invalidateblock(const UniValue& params, bool fHelp)
{
if (fHelp || params.size() != 1)
throw std::runtime_error(
"invalidateblock \"hash\"\n"
"\nPermanently marks a block as invalid, as if it violated a consensus rule.\n"
"\nArguments:\n"
"1. hash (string, required) the hash of the block to mark as invalid\n"
"\nResult:\n"
"\nExamples:\n"
+ HelpExampleCli("invalidateblock", "\"blockhash\"")
+ HelpExampleRpc("invalidateblock", "\"blockhash\"")
);
std::string strHash = params[0].get_str();
uint256 hash(uint256S(strHash));
CBlockIndex* pblockindex = nullptr;
{
pblockindex = Blocks::Index::get(hash);
if (!pblockindex)
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Block not found");
}
Application::instance()->validation()->invalidateBlock(pblockindex);
return NullUniValue;
}
UniValue reconsiderblock(const UniValue& params, bool fHelp)
{
if (fHelp || params.size() != 1)
throw std::runtime_error(
"reconsiderblock \"hash\"\n"
"\nRemoves invalidity status of a block and its descendants, reconsider them for activation.\n"
"This can be used to undo the effects of invalidateblock.\n"
"\nArguments:\n"
"1. hash (string, required) the hash of the block to reconsider\n"
"\nResult:\n"
"\nExamples:\n"
+ HelpExampleCli("reconsiderblock", "\"blockhash\"")
+ HelpExampleRpc("reconsiderblock", "\"blockhash\"")
);
std::string strHash = params[0].get_str();
uint256 hash(uint256S(strHash));
auto validator = Application::instance()->validation();
CBlockIndex* pblockindex = Blocks::Index::get(hash);
if (!pblockindex)
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Block not found");
Blocks::Index::reconsiderBlock(pblockindex, validator->mempool()->utxo());
// try to actually validate the block again.
Validation::Settings future;
if (pblockindex->nStatus & BLOCK_HAVE_DATA) {
future = validator->addBlock(pblockindex->GetBlockPos()).start();
} else {
future = validator->addBlock(Block::fromOldBlock(pblockindex->GetBlockHeader()), 0).start();
}
future.waitUntilFinished();
auto acceptedBlock = Blocks::DB::instance()->headerChain()[pblockindex->nHeight];
if (acceptedBlock && acceptedBlock != pblockindex)
logCritical(Log::RPC) << "Reconsider block done on block and alternate chain still wins. Consider invalidating block:"
<< acceptedBlock->GetBlockHash();
if (!future.error().empty())
throw JSONRPCError(RPC_DATABASE_ERROR, future.error());
return NullUniValue;
}