static UniValue submitheader(const JSONRPCRequest& request)
{
if (request.fHelp || request.params.size() != 1) {
throw std::runtime_error(
"submitheader \"hexdata\"\n"
"\nDecode the given hexdata as a header and submit it as a candidate chain tip if valid."
"\nThrows when the header is invalid.\n"
"\nArguments\n"
"1. \"hexdata\" (string, required) the hex-encoded block header data\n"
"\nResult:\n"
"None"
"\nExamples:\n" +
HelpExampleCli("submitheader", "\"aabbcc\"") +
HelpExampleRpc("submitheader", "\"aabbcc\""));
}
CBlockHeader h;
if (!DecodeHexBlockHeader(h, request.params[0].get_str())) {
throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Block header decode failed");
}
{
LOCK(cs_main);
if (!LookupBlockIndex(h.hashPrevBlock)) {
throw JSONRPCError(RPC_VERIFY_ERROR, "Must submit previous header (" + h.hashPrevBlock.GetHex() + ") first");
}
}
CValidationState state;
ProcessNewBlockHeaders({h}, state, Params(), /* ppindex */ nullptr, /* first_invalid */ nullptr);
if (state.IsValid()) return NullUniValue;
if (state.IsError()) {
throw JSONRPCError(RPC_VERIFY_ERROR, FormatStateMessage(state));
}
throw JSONRPCError(RPC_VERIFY_ERROR, state.GetRejectReason());
}
CBlockIndex* GetLastCheckpoint(const CCheckpointData& data)
{
const MapCheckpoints& checkpoints = data.mapCheckpoints;
for (const MapCheckpoints::value_type& i : reverse_iterate(checkpoints))
{
const uint256& hash = i.second;
CBlockIndex* pindex = LookupBlockIndex(hash);
if (pindex) {
return pindex;
}
}
return nullptr;
}
void BaseIndex::ChainStateFlushed(const CBlockLocator& locator)
{
if (!m_synced) {
return;
}
const uint256& locator_tip_hash = locator.vHave.front();
const CBlockIndex* locator_tip_index;
{
LOCK(cs_main);
locator_tip_index = LookupBlockIndex(locator_tip_hash);
}
if (!locator_tip_index) {
FatalError("%s: First block (hash=%s) in locator was not found",
__func__, locator_tip_hash.ToString());
return;
}
// This checks that ChainStateFlushed callbacks are received after BlockConnected. The check may fail
// immediately after the sync thread catches up and sets m_synced. Consider the case where
// there is a reorg and the blocks on the stale branch are in the ValidationInterface queue
// backlog even after the sync thread has caught up to the new chain tip. In this unlikely
// event, log a warning and let the queue clear.
const CBlockIndex* best_block_index = m_best_block_index.load();
if (best_block_index->GetAncestor(locator_tip_index->nHeight) != locator_tip_index) {
LogPrintf("%s: WARNING: Locator contains block (hash=%s) not on known best " /* Continued */
"chain (tip=%s); not writing index locator\n",
__func__, locator_tip_hash.ToString(),
best_block_index->GetBlockHash().ToString());
return;
}
if (!GetDB().WriteBestBlock(locator)) {
error("%s: Failed to write locator to disk", __func__);
}
}
static UniValue submitblock(const JSONRPCRequest& request)
{
// We allow 2 arguments for compliance with BIP22. Argument 2 is ignored.
if (request.fHelp || request.params.size() < 1 || request.params.size() > 2) {
throw std::runtime_error(
"submitblock \"hexdata\" ( \"dummy\" )\n"
"\nAttempts to submit new block to network.\n"
"See https://en.bitcoin.it/wiki/BIP_0022 for full specification.\n"
"\nArguments\n"
"1. \"hexdata\" (string, required) the hex-encoded block data to submit\n"
"2. \"dummy\" (optional) dummy value, for compatibility with BIP22. This value is ignored.\n"
"\nResult:\n"
"\nExamples:\n"
+ HelpExampleCli("submitblock", "\"mydata\"")
+ HelpExampleRpc("submitblock", "\"mydata\"")
);
}
std::shared_ptr<CBlock> blockptr = std::make_shared<CBlock>();
CBlock& block = *blockptr;
if (!DecodeHexBlk(block, request.params[0].get_str())) {
throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Block decode failed");
}
if (block.vtx.empty() || !block.vtx[0]->IsCoinBase()) {
throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Block does not start with a coinbase");
}
uint256 hash = block.GetHash();
{
LOCK(cs_main);
const CBlockIndex* pindex = LookupBlockIndex(hash);
if (pindex) {
if (pindex->IsValid(BLOCK_VALID_SCRIPTS)) {
return "duplicate";
}
if (pindex->nStatus & BLOCK_FAILED_MASK) {
return "duplicate-invalid";
}
}
}
{
LOCK(cs_main);
const CBlockIndex* pindex = LookupBlockIndex(block.hashPrevBlock);
if (pindex) {
UpdateUncommittedBlockStructures(block, pindex, Params().GetConsensus());
}
}
bool new_block;
submitblock_StateCatcher sc(block.GetHash());
RegisterValidationInterface(&sc);
bool accepted = ProcessNewBlock(Params(), blockptr, /* fForceProcessing */ true, /* fNewBlock */ &new_block);
UnregisterValidationInterface(&sc);
if (!new_block && accepted) {
return "duplicate";
}
if (!sc.found) {
return "inconclusive";
}
return BIP22ValidationResult(sc.state);
}
static UniValue getblocktemplate(const JSONRPCRequest& request)
{
if (request.fHelp || request.params.size() > 1)
throw std::runtime_error(
"getblocktemplate ( TemplateRequest )\n"
"\nIf the request parameters include a 'mode' key, that is used to explicitly select between the default 'template' request or a 'proposal'.\n"
"It returns data needed to construct a block to work on.\n"
"For full specification, see BIPs 22, 23, 9, and 145:\n"
" https://github.com/bitcoin/bips/blob/master/bip-0022.mediawiki\n"
" https://github.com/bitcoin/bips/blob/master/bip-0023.mediawiki\n"
" https://github.com/bitcoin/bips/blob/master/bip-0009.mediawiki#getblocktemplate_changes\n"
" https://github.com/bitcoin/bips/blob/master/bip-0145.mediawiki\n"
"\nArguments:\n"
"1. template_request (json object, optional) A json object in the following spec\n"
" {\n"
" \"mode\":\"template\" (string, optional) This must be set to \"template\", \"proposal\" (see BIP 23), or omitted\n"
" \"capabilities\":[ (array, optional) A list of strings\n"
" \"support\" (string) client side supported feature, 'longpoll', 'coinbasetxn', 'coinbasevalue', 'proposal', 'serverlist', 'workid'\n"
" ,...\n"
" ],\n"
" \"rules\":[ (array, optional) A list of strings\n"
" \"support\" (string) client side supported softfork deployment\n"
" ,...\n"
" ]\n"
" }\n"
"\n"
"\nResult:\n"
"{\n"
" \"version\" : n, (numeric) The preferred block version\n"
" \"rules\" : [ \"rulename\", ... ], (array of strings) specific block rules that are to be enforced\n"
" \"vbavailable\" : { (json object) set of pending, supported versionbit (BIP 9) softfork deployments\n"
" \"rulename\" : bitnumber (numeric) identifies the bit number as indicating acceptance and readiness for the named softfork rule\n"
" ,...\n"
" },\n"
" \"vbrequired\" : n, (numeric) bit mask of versionbits the server requires set in submissions\n"
" \"previousblockhash\" : \"xxxx\", (string) The hash of current highest block\n"
" \"transactions\" : [ (array) contents of non-coinbase transactions that should be included in the next block\n"
" {\n"
" \"data\" : \"xxxx\", (string) transaction data encoded in hexadecimal (byte-for-byte)\n"
" \"txid\" : \"xxxx\", (string) transaction id encoded in little-endian hexadecimal\n"
" \"hash\" : \"xxxx\", (string) hash encoded in little-endian hexadecimal (including witness data)\n"
" \"depends\" : [ (array) array of numbers \n"
" n (numeric) transactions before this one (by 1-based index in 'transactions' list) that must be present in the final block if this one is\n"
" ,...\n"
" ],\n"
" \"fee\": n, (numeric) difference in value between transaction inputs and outputs (in satoshis); for coinbase transactions, this is a negative Number of the total collected block fees (ie, not including the block subsidy); if key is not present, fee is unknown and clients MUST NOT assume there isn't one\n"
" \"sigops\" : n, (numeric) total SigOps cost, as counted for purposes of block limits; if key is not present, sigop cost is unknown and clients MUST NOT assume it is zero\n"
" \"weight\" : n, (numeric) total transaction weight, as counted for purposes of block limits\n"
" }\n"
" ,...\n"
" ],\n"
" \"coinbaseaux\" : { (json object) data that should be included in the coinbase's scriptSig content\n"
" \"flags\" : \"xx\" (string) key name is to be ignored, and value included in scriptSig\n"
" },\n"
" \"coinbasevalue\" : n, (numeric) maximum allowable input to coinbase transaction, including the generation award and transaction fees (in satoshis)\n"
" \"coinbasetxn\" : { ... }, (json object) information for coinbase transaction\n"
" \"target\" : \"xxxx\", (string) The hash target\n"
" \"mintime\" : xxx, (numeric) The minimum timestamp appropriate for next block time in seconds since epoch (Jan 1 1970 GMT)\n"
" \"mutable\" : [ (array of string) list of ways the block template may be changed \n"
" \"value\" (string) A way the block template may be changed, e.g. 'time', 'transactions', 'prevblock'\n"
" ,...\n"
" ],\n"
" \"noncerange\" : \"00000000ffffffff\",(string) A range of valid nonces\n"
" \"sigoplimit\" : n, (numeric) limit of sigops in blocks\n"
" \"sizelimit\" : n, (numeric) limit of block size\n"
" \"weightlimit\" : n, (numeric) limit of block weight\n"
" \"curtime\" : ttt, (numeric) current timestamp in seconds since epoch (Jan 1 1970 GMT)\n"
" \"bits\" : \"xxxxxxxx\", (string) compressed target of next block\n"
" \"height\" : n (numeric) The height of the next block\n"
"}\n"
"\nExamples:\n"
+ HelpExampleCli("getblocktemplate", "{\"rules\": [\"segwit\"]}")
+ HelpExampleRpc("getblocktemplate", "{\"rules\": [\"segwit\"]}")
);
LOCK(cs_main);
std::string strMode = "template";
UniValue lpval = NullUniValue;
std::set<std::string> setClientRules;
int64_t nMaxVersionPreVB = -1;
if (!request.params[0].isNull())
{
const UniValue& oparam = request.params[0].get_obj();
const UniValue& modeval = find_value(oparam, "mode");
if (modeval.isStr())
strMode = modeval.get_str();
else if (modeval.isNull())
{
/* Do nothing */
}
else
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
lpval = find_value(oparam, "longpollid");
if (strMode == "proposal")
{
const UniValue& dataval = find_value(oparam, "data");
if (!dataval.isStr())
throw JSONRPCError(RPC_TYPE_ERROR, "Missing data String key for proposal");
CBlock block;
if (!DecodeHexBlk(block, dataval.get_str()))
throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Block decode failed");
uint256 hash = block.GetHash();
const CBlockIndex* pindex = LookupBlockIndex(hash);
if (pindex) {
if (pindex->IsValid(BLOCK_VALID_SCRIPTS))
return "duplicate";
if (pindex->nStatus & BLOCK_FAILED_MASK)
return "duplicate-invalid";
return "duplicate-inconclusive";
}
CBlockIndex* const pindexPrev = chainActive.Tip();
// TestBlockValidity only supports blocks built on the current Tip
if (block.hashPrevBlock != pindexPrev->GetBlockHash())
return "inconclusive-not-best-prevblk";
CValidationState state;
TestBlockValidity(state, Params(), block, pindexPrev, false, true);
return BIP22ValidationResult(state);
}
const UniValue& aClientRules = find_value(oparam, "rules");
if (aClientRules.isArray()) {
for (unsigned int i = 0; i < aClientRules.size(); ++i) {
const UniValue& v = aClientRules[i];
setClientRules.insert(v.get_str());
}
} else {
// NOTE: It is important that this NOT be read if versionbits is supported
const UniValue& uvMaxVersion = find_value(oparam, "maxversion");
if (uvMaxVersion.isNum()) {
nMaxVersionPreVB = uvMaxVersion.get_int64();
}
}
}
if (strMode != "template")
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
if(!g_connman)
throw JSONRPCError(RPC_CLIENT_P2P_DISABLED, "Error: Peer-to-peer functionality missing or disabled");
if (g_connman->GetNodeCount(CConnman::CONNECTIONS_ALL) == 0)
throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "Bitcoin is not connected!");
if (IsInitialBlockDownload())
throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "Bitcoin is downloading blocks...");
static unsigned int nTransactionsUpdatedLast;
if (!lpval.isNull())
{
// Wait to respond until either the best block changes, OR a minute has passed and there are more transactions
uint256 hashWatchedChain;
std::chrono::steady_clock::time_point checktxtime;
unsigned int nTransactionsUpdatedLastLP;
if (lpval.isStr())
{
// Format: <hashBestChain><nTransactionsUpdatedLast>
std::string lpstr = lpval.get_str();
hashWatchedChain = ParseHashV(lpstr.substr(0, 64), "longpollid");
nTransactionsUpdatedLastLP = atoi64(lpstr.substr(64));
}
else
{
// NOTE: Spec does not specify behaviour for non-string longpollid, but this makes testing easier
hashWatchedChain = chainActive.Tip()->GetBlockHash();
nTransactionsUpdatedLastLP = nTransactionsUpdatedLast;
}
// Release the wallet and main lock while waiting
LEAVE_CRITICAL_SECTION(cs_main);
{
checktxtime = std::chrono::steady_clock::now() + std::chrono::minutes(1);
WAIT_LOCK(g_best_block_mutex, lock);
while (g_best_block == hashWatchedChain && IsRPCRunning())
{
if (g_best_block_cv.wait_until(lock, checktxtime) == std::cv_status::timeout)
{
// Timeout: Check transactions for update
if (mempool.GetTransactionsUpdated() != nTransactionsUpdatedLastLP)
break;
checktxtime += std::chrono::seconds(10);
}
}
}
ENTER_CRITICAL_SECTION(cs_main);
if (!IsRPCRunning())
throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "Shutting down");
// TODO: Maybe recheck connections/IBD and (if something wrong) send an expires-immediately template to stop miners?
}
const struct VBDeploymentInfo& segwit_info = VersionBitsDeploymentInfo[Consensus::DEPLOYMENT_SEGWIT];
// If the caller is indicating segwit support, then allow CreateNewBlock()
// to select witness transactions, after segwit activates (otherwise
// don't).
bool fSupportsSegwit = setClientRules.find(segwit_info.name) != setClientRules.end();
// Update block
static CBlockIndex* pindexPrev;
static int64_t nStart;
static std::unique_ptr<CBlockTemplate> pblocktemplate;
// Cache whether the last invocation was with segwit support, to avoid returning
// a segwit-block to a non-segwit caller.
static bool fLastTemplateSupportsSegwit = true;
if (pindexPrev != chainActive.Tip() ||
(mempool.GetTransactionsUpdated() != nTransactionsUpdatedLast && GetTime() - nStart > 5) ||
fLastTemplateSupportsSegwit != fSupportsSegwit)
{
// Clear pindexPrev so future calls make a new block, despite any failures from here on
pindexPrev = nullptr;
// Store the pindexBest used before CreateNewBlock, to avoid races
nTransactionsUpdatedLast = mempool.GetTransactionsUpdated();
CBlockIndex* pindexPrevNew = chainActive.Tip();
nStart = GetTime();
fLastTemplateSupportsSegwit = fSupportsSegwit;
// Create new block
CScript scriptDummy = CScript() << OP_TRUE;
pblocktemplate = BlockAssembler(Params()).CreateNewBlock(scriptDummy, fSupportsSegwit);
if (!pblocktemplate)
throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
// Need to update only after we know CreateNewBlock succeeded
pindexPrev = pindexPrevNew;
}
assert(pindexPrev);
CBlock* pblock = &pblocktemplate->block; // pointer for convenience
const Consensus::Params& consensusParams = Params().GetConsensus();
// Update nTime
UpdateTime(pblock, consensusParams, pindexPrev);
pblock->nNonce = 0;
// NOTE: If at some point we support pre-segwit miners post-segwit-activation, this needs to take segwit support into consideration
const bool fPreSegWit = (ThresholdState::ACTIVE != VersionBitsState(pindexPrev, consensusParams, Consensus::DEPLOYMENT_SEGWIT, versionbitscache));
UniValue aCaps(UniValue::VARR); aCaps.push_back("proposal");
UniValue transactions(UniValue::VARR);
std::map<uint256, int64_t> setTxIndex;
int i = 0;
for (const auto& it : pblock->vtx) {
const CTransaction& tx = *it;
uint256 txHash = tx.GetHash();
setTxIndex[txHash] = i++;
if (tx.IsCoinBase())
continue;
UniValue entry(UniValue::VOBJ);
entry.pushKV("data", EncodeHexTx(tx));
entry.pushKV("txid", txHash.GetHex());
entry.pushKV("hash", tx.GetWitnessHash().GetHex());
UniValue deps(UniValue::VARR);
for (const CTxIn &in : tx.vin)
{
if (setTxIndex.count(in.prevout.hash))
deps.push_back(setTxIndex[in.prevout.hash]);
}
entry.pushKV("depends", deps);
int index_in_template = i - 1;
entry.pushKV("fee", pblocktemplate->vTxFees[index_in_template]);
int64_t nTxSigOps = pblocktemplate->vTxSigOpsCost[index_in_template];
if (fPreSegWit) {
assert(nTxSigOps % WITNESS_SCALE_FACTOR == 0);
nTxSigOps /= WITNESS_SCALE_FACTOR;
}
entry.pushKV("sigops", nTxSigOps);
entry.pushKV("weight", GetTransactionWeight(tx));
transactions.push_back(entry);
}
UniValue aux(UniValue::VOBJ);
aux.pushKV("flags", HexStr(COINBASE_FLAGS.begin(), COINBASE_FLAGS.end()));
arith_uint256 hashTarget = arith_uint256().SetCompact(pblock->nBits);
UniValue aMutable(UniValue::VARR);
aMutable.push_back("time");
aMutable.push_back("transactions");
aMutable.push_back("prevblock");
UniValue result(UniValue::VOBJ);
result.pushKV("capabilities", aCaps);
UniValue aRules(UniValue::VARR);
UniValue vbavailable(UniValue::VOBJ);
for (int j = 0; j < (int)Consensus::MAX_VERSION_BITS_DEPLOYMENTS; ++j) {
Consensus::DeploymentPos pos = Consensus::DeploymentPos(j);
ThresholdState state = VersionBitsState(pindexPrev, consensusParams, pos, versionbitscache);
switch (state) {
case ThresholdState::DEFINED:
case ThresholdState::FAILED:
// Not exposed to GBT at all
break;
case ThresholdState::LOCKED_IN:
// Ensure bit is set in block version
pblock->nVersion |= VersionBitsMask(consensusParams, pos);
// FALL THROUGH to get vbavailable set...
case ThresholdState::STARTED:
{
const struct VBDeploymentInfo& vbinfo = VersionBitsDeploymentInfo[pos];
vbavailable.pushKV(gbt_vb_name(pos), consensusParams.vDeployments[pos].bit);
if (setClientRules.find(vbinfo.name) == setClientRules.end()) {
if (!vbinfo.gbt_force) {
// If the client doesn't support this, don't indicate it in the [default] version
pblock->nVersion &= ~VersionBitsMask(consensusParams, pos);
}
}
break;
}
case ThresholdState::ACTIVE:
{
// Add to rules only
const struct VBDeploymentInfo& vbinfo = VersionBitsDeploymentInfo[pos];
aRules.push_back(gbt_vb_name(pos));
if (setClientRules.find(vbinfo.name) == setClientRules.end()) {
// Not supported by the client; make sure it's safe to proceed
if (!vbinfo.gbt_force) {
// If we do anything other than throw an exception here, be sure version/force isn't sent to old clients
throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("Support for '%s' rule requires explicit client support", vbinfo.name));
}
}
break;
}
}
}
result.pushKV("version", pblock->nVersion);
result.pushKV("rules", aRules);
result.pushKV("vbavailable", vbavailable);
result.pushKV("vbrequired", int(0));
if (nMaxVersionPreVB >= 2) {
// If VB is supported by the client, nMaxVersionPreVB is -1, so we won't get here
// Because BIP 34 changed how the generation transaction is serialized, we can only use version/force back to v2 blocks
// This is safe to do [otherwise-]unconditionally only because we are throwing an exception above if a non-force deployment gets activated
// Note that this can probably also be removed entirely after the first BIP9 non-force deployment (ie, probably segwit) gets activated
aMutable.push_back("version/force");
}
result.pushKV("previousblockhash", pblock->hashPrevBlock.GetHex());
result.pushKV("transactions", transactions);
result.pushKV("coinbaseaux", aux);
result.pushKV("coinbasevalue", (int64_t)pblock->vtx[0]->vout[0].nValue);
result.pushKV("longpollid", chainActive.Tip()->GetBlockHash().GetHex() + i64tostr(nTransactionsUpdatedLast));
result.pushKV("target", hashTarget.GetHex());
result.pushKV("mintime", (int64_t)pindexPrev->GetMedianTimePast()+1);
result.pushKV("mutable", aMutable);
result.pushKV("noncerange", "00000000ffffffff");
int64_t nSigOpLimit = MAX_BLOCK_SIGOPS_COST;
int64_t nSizeLimit = MAX_BLOCK_SERIALIZED_SIZE;
if (fPreSegWit) {
assert(nSigOpLimit % WITNESS_SCALE_FACTOR == 0);
nSigOpLimit /= WITNESS_SCALE_FACTOR;
assert(nSizeLimit % WITNESS_SCALE_FACTOR == 0);
nSizeLimit /= WITNESS_SCALE_FACTOR;
}
result.pushKV("sigoplimit", nSigOpLimit);
result.pushKV("sizelimit", nSizeLimit);
if (!fPreSegWit) {
result.pushKV("weightlimit", (int64_t)MAX_BLOCK_WEIGHT);
}
result.pushKV("curtime", pblock->GetBlockTime());
result.pushKV("bits", strprintf("%08x", pblock->nBits));
result.pushKV("height", (int64_t)(pindexPrev->nHeight+1));
if (!pblocktemplate->vchCoinbaseCommitment.empty() && fSupportsSegwit) {
result.pushKV("default_witness_commitment", HexStr(pblocktemplate->vchCoinbaseCommitment.begin(), pblocktemplate->vchCoinbaseCommitment.end()));
}
return result;
}
static bool rest_block(HTTPRequest* req,
const std::string& strURIPart,
bool showTxDetails)
{
if (!CheckWarmup(req))
return false;
std::string hashStr;
const RetFormat rf = ParseDataFormat(hashStr, strURIPart);
uint256 hash;
if (!ParseHashStr(hashStr, hash))
return RESTERR(req, HTTP_BAD_REQUEST, "Invalid hash: " + hashStr);
CBlock block;
CBlockIndex* pblockindex = nullptr;
{
LOCK(cs_main);
pblockindex = LookupBlockIndex(hash);
if (!pblockindex) {
return RESTERR(req, HTTP_NOT_FOUND, hashStr + " not found");
}
if (IsBlockPruned(pblockindex))
return RESTERR(req, HTTP_NOT_FOUND, hashStr + " not available (pruned data)");
if (!ReadBlockFromDisk(block, pblockindex, Params().GetConsensus()))
return RESTERR(req, HTTP_NOT_FOUND, hashStr + " not found");
}
CDataStream ssBlock(SER_NETWORK, PROTOCOL_VERSION | RPCSerializationFlags());
ssBlock << block;
switch (rf) {
case RetFormat::BINARY: {
std::string binaryBlock = ssBlock.str();
req->WriteHeader("Content-Type", "application/octet-stream");
req->WriteReply(HTTP_OK, binaryBlock);
return true;
}
case RetFormat::HEX: {
std::string strHex = HexStr(ssBlock.begin(), ssBlock.end()) + "\n";
req->WriteHeader("Content-Type", "text/plain");
req->WriteReply(HTTP_OK, strHex);
return true;
}
case RetFormat::JSON: {
UniValue objBlock;
{
LOCK(cs_main);
objBlock = blockToJSON(block, pblockindex, showTxDetails);
}
std::string strJSON = objBlock.write() + "\n";
req->WriteHeader("Content-Type", "application/json");
req->WriteReply(HTTP_OK, strJSON);
return true;
}
default: {
return RESTERR(req, HTTP_NOT_FOUND, "output format not found (available: " + AvailableDataFormatsString() + ")");
}
}
}
static bool rest_headers(HTTPRequest* req,
const std::string& strURIPart)
{
if (!CheckWarmup(req))
return false;
std::string param;
const RetFormat rf = ParseDataFormat(param, strURIPart);
std::vector<std::string> path;
boost::split(path, param, boost::is_any_of("/"));
if (path.size() != 2)
return RESTERR(req, HTTP_BAD_REQUEST, "No header count specified. Use /rest/headers/<count>/<hash>.<ext>.");
long count = strtol(path[0].c_str(), nullptr, 10);
if (count < 1 || count > 2000)
return RESTERR(req, HTTP_BAD_REQUEST, "Header count out of range: " + path[0]);
std::string hashStr = path[1];
uint256 hash;
if (!ParseHashStr(hashStr, hash))
return RESTERR(req, HTTP_BAD_REQUEST, "Invalid hash: " + hashStr);
std::vector<const CBlockIndex *> headers;
headers.reserve(count);
{
LOCK(cs_main);
const CBlockIndex* pindex = LookupBlockIndex(hash);
while (pindex != nullptr && chainActive.Contains(pindex)) {
headers.push_back(pindex);
if (headers.size() == (unsigned long)count)
break;
pindex = chainActive.Next(pindex);
}
}
CDataStream ssHeader(SER_NETWORK, PROTOCOL_VERSION);
for (const CBlockIndex *pindex : headers) {
ssHeader << pindex->GetBlockHeader();
}
switch (rf) {
case RetFormat::BINARY: {
std::string binaryHeader = ssHeader.str();
req->WriteHeader("Content-Type", "application/octet-stream");
req->WriteReply(HTTP_OK, binaryHeader);
return true;
}
case RetFormat::HEX: {
std::string strHex = HexStr(ssHeader.begin(), ssHeader.end()) + "\n";
req->WriteHeader("Content-Type", "text/plain");
req->WriteReply(HTTP_OK, strHex);
return true;
}
case RetFormat::JSON: {
UniValue jsonHeaders(UniValue::VARR);
{
LOCK(cs_main);
for (const CBlockIndex *pindex : headers) {
jsonHeaders.push_back(blockheaderToJSON(pindex));
}
}
std::string strJSON = jsonHeaders.write() + "\n";
req->WriteHeader("Content-Type", "application/json");
req->WriteReply(HTTP_OK, strJSON);
return true;
}
default: {
return RESTERR(req, HTTP_NOT_FOUND, "output format not found (available: .bin, .hex)");
}
}
}
