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743 lines
25 KiB
C++
743 lines
25 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2020 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include <chain.h>
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#include <chainparams.h>
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#include <context.h>
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#include <core_io.h>
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#include <httpserver.h>
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#include <index/txindex.h>
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#include <llmq/chainlocks.h>
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#include <llmq/context.h>
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#include <llmq/instantsend.h>
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#include <node/blockstorage.h>
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#include <node/context.h>
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#include <primitives/block.h>
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#include <primitives/transaction.h>
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#include <rpc/blockchain.h>
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#include <rpc/protocol.h>
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#include <rpc/server.h>
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#include <rpc/server_util.h>
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#include <streams.h>
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#include <sync.h>
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#include <txmempool.h>
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#include <util/check.h>
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#include <validation.h>
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#include <version.h>
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#include <univalue.h>
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static const size_t MAX_GETUTXOS_OUTPOINTS = 15; //allow a max of 15 outpoints to be queried at once
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enum class RetFormat {
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UNDEF,
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BINARY,
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HEX,
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JSON,
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};
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static const struct {
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RetFormat rf;
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const char* name;
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} rf_names[] = {
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{RetFormat::UNDEF, ""},
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{RetFormat::BINARY, "bin"},
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{RetFormat::HEX, "hex"},
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{RetFormat::JSON, "json"},
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};
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struct CCoin {
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uint32_t nHeight;
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CTxOut out;
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CCoin() : nHeight(0) {}
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explicit CCoin(Coin&& in) : nHeight(in.nHeight), out(std::move(in.out)) {}
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SERIALIZE_METHODS(CCoin, obj)
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{
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uint32_t nTxVerDummy = 0;
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READWRITE(nTxVerDummy, obj.nHeight, obj.out);
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}
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};
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static bool RESTERR(HTTPRequest* req, enum HTTPStatusCode status, std::string message)
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{
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req->WriteHeader("Content-Type", "text/plain");
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req->WriteReply(status, message + "\r\n");
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return false;
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}
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/**
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* Get the node context.
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*
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* @param[in] req The HTTP request, whose status code will be set if node
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* context is not found.
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* @returns Pointer to the node context or nullptr if not found.
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*/
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static NodeContext* GetNodeContext(const CoreContext& context, HTTPRequest* req)
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{
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auto* node_context = GetContext<NodeContext>(context);
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if (!node_context) {
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RESTERR(req, HTTP_INTERNAL_SERVER_ERROR,
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strprintf("%s:%d (%s)\n"
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"Internal bug detected: Node context not found!\n"
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"You may report this issue here: %s\n",
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__FILE__, __LINE__, __func__, PACKAGE_BUGREPORT));
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return nullptr;
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}
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return node_context;
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}
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/**
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* Get the node context mempool.
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*
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* @param[in] req The HTTP request, whose status code will be set if node
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* context mempool is not found.
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* @returns Pointer to the mempool or nullptr if no mempool found.
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*/
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static CTxMemPool* GetMemPool(const CoreContext& context, HTTPRequest* req)
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{
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auto* node_context = GetContext<NodeContext>(context);
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if (!node_context || !node_context->mempool) {
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RESTERR(req, HTTP_NOT_FOUND, "Mempool disabled or instance not found");
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return nullptr;
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}
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return node_context->mempool.get();
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}
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/**
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* Get the node context chainstatemanager.
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*
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* @param[in] req The HTTP request, whose status code will be set if node
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* context chainstatemanager is not found.
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* @returns Pointer to the chainstatemanager or nullptr if none found.
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*/
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static ChainstateManager* GetChainman(const CoreContext& context, HTTPRequest* req)
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{
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auto node_context = GetContext<NodeContext>(context);
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if (!node_context || !node_context->chainman) {
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RESTERR(req, HTTP_INTERNAL_SERVER_ERROR,
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strprintf("%s:%d (%s)\n"
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"Internal bug detected: Chainman disabled or instance not found!\n"
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"You may report this issue here: %s\n",
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__FILE__, __LINE__, __func__, PACKAGE_BUGREPORT));
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return nullptr;
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}
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return node_context->chainman.get();
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}
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static RetFormat ParseDataFormat(std::string& param, const std::string& strReq)
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{
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const std::string::size_type pos = strReq.rfind('.');
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if (pos == std::string::npos)
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{
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param = strReq;
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return rf_names[0].rf;
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}
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param = strReq.substr(0, pos);
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const std::string suff(strReq, pos + 1);
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for (const auto& rf_name : rf_names) {
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if (suff == rf_name.name)
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return rf_name.rf;
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}
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/* If no suffix is found, return original string. */
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param = strReq;
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return rf_names[0].rf;
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}
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static std::string AvailableDataFormatsString()
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{
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std::string formats;
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for (const auto& rf_name : rf_names) {
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if (strlen(rf_name.name) > 0) {
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formats.append(".");
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formats.append(rf_name.name);
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formats.append(", ");
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}
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}
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if (formats.length() > 0)
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return formats.substr(0, formats.length() - 2);
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return formats;
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}
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static bool CheckWarmup(HTTPRequest* req)
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{
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std::string statusmessage;
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if (RPCIsInWarmup(&statusmessage))
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return RESTERR(req, HTTP_SERVICE_UNAVAILABLE, "Service temporarily unavailable: " + statusmessage);
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return true;
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}
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static bool rest_headers(const CoreContext& context,
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HTTPRequest* req,
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const std::string& strURIPart)
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{
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if (!CheckWarmup(req))
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return false;
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std::string param;
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const RetFormat rf = ParseDataFormat(param, strURIPart);
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std::vector<std::string> path = SplitString(param, '/');
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if (path.size() != 2)
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return RESTERR(req, HTTP_BAD_REQUEST, "No header count specified. Use /rest/headers/<count>/<hash>.<ext>.");
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long count = strtol(path[0].c_str(), nullptr, 10);
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if (count < 1 || count > 2000)
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return RESTERR(req, HTTP_BAD_REQUEST, "Header count out of range: " + path[0]);
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std::string hashStr = path[1];
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uint256 hash;
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if (!ParseHashStr(hashStr, hash))
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return RESTERR(req, HTTP_BAD_REQUEST, "Invalid hash: " + hashStr);
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const CBlockIndex* tip = nullptr;
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std::vector<const CBlockIndex *> headers;
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headers.reserve(count);
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{
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ChainstateManager* maybe_chainman = GetChainman(context, req);
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if (!maybe_chainman) return false;
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ChainstateManager& chainman = *maybe_chainman;
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LOCK(cs_main);
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CChain& active_chain = chainman.ActiveChain();
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tip = active_chain.Tip();
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const CBlockIndex* pindex = chainman.m_blockman.LookupBlockIndex(hash);
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while (pindex != nullptr && active_chain.Contains(pindex)) {
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headers.push_back(pindex);
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if (headers.size() == (unsigned long)count)
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break;
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pindex = active_chain.Next(pindex);
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}
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}
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switch (rf) {
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case RetFormat::BINARY: {
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CDataStream ssHeader(SER_NETWORK, PROTOCOL_VERSION);
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for (const CBlockIndex *pindex : headers) {
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ssHeader << pindex->GetBlockHeader();
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}
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std::string binaryHeader = ssHeader.str();
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req->WriteHeader("Content-Type", "application/octet-stream");
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req->WriteReply(HTTP_OK, binaryHeader);
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return true;
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}
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case RetFormat::HEX: {
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CDataStream ssHeader(SER_NETWORK, PROTOCOL_VERSION);
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for (const CBlockIndex *pindex : headers) {
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ssHeader << pindex->GetBlockHeader();
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}
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std::string strHex = HexStr(ssHeader) + "\n";
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req->WriteHeader("Content-Type", "text/plain");
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req->WriteReply(HTTP_OK, strHex);
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return true;
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}
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case RetFormat::JSON: {
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UniValue jsonHeaders(UniValue::VARR);
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for (const CBlockIndex *pindex : headers) {
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jsonHeaders.push_back(blockheaderToJSON(tip, pindex, *llmq::chainLocksHandler, *llmq::quorumInstantSendManager));
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}
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std::string strJSON = jsonHeaders.write() + "\n";
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req->WriteHeader("Content-Type", "application/json");
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req->WriteReply(HTTP_OK, strJSON);
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return true;
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}
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default: {
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return RESTERR(req, HTTP_NOT_FOUND, "output format not found (available: .bin, .hex, .json)");
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}
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}
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}
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static bool rest_block(const CoreContext& context,
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HTTPRequest* req,
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const std::string& strURIPart,
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bool showTxDetails)
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{
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if (!CheckWarmup(req))
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return false;
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std::string hashStr;
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const RetFormat rf = ParseDataFormat(hashStr, strURIPart);
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uint256 hash;
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if (!ParseHashStr(hashStr, hash))
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return RESTERR(req, HTTP_BAD_REQUEST, "Invalid hash: " + hashStr);
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CBlock block;
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const CBlockIndex* pblockindex = nullptr;
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const CBlockIndex* tip = nullptr;
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ChainstateManager* maybe_chainman = GetChainman(context, req);
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if (!maybe_chainman) return false;
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ChainstateManager& chainman = *maybe_chainman;
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{
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LOCK(cs_main);
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tip = chainman.ActiveChain().Tip();
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pblockindex = chainman.m_blockman.LookupBlockIndex(hash);
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if (!pblockindex) {
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return RESTERR(req, HTTP_NOT_FOUND, hashStr + " not found");
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}
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if (chainman.m_blockman.IsBlockPruned(pblockindex))
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return RESTERR(req, HTTP_NOT_FOUND, hashStr + " not available (pruned data)");
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if (!ReadBlockFromDisk(block, pblockindex, Params().GetConsensus()))
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return RESTERR(req, HTTP_NOT_FOUND, hashStr + " not found");
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}
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switch (rf) {
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case RetFormat::BINARY: {
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CDataStream ssBlock(SER_NETWORK, PROTOCOL_VERSION);
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ssBlock << block;
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std::string binaryBlock = ssBlock.str();
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req->WriteHeader("Content-Type", "application/octet-stream");
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req->WriteReply(HTTP_OK, binaryBlock);
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return true;
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}
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case RetFormat::HEX: {
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CDataStream ssBlock(SER_NETWORK, PROTOCOL_VERSION);
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ssBlock << block;
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std::string strHex = HexStr(ssBlock) + "\n";
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req->WriteHeader("Content-Type", "text/plain");
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req->WriteReply(HTTP_OK, strHex);
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return true;
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}
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case RetFormat::JSON: {
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UniValue objBlock = blockToJSON(chainman.m_blockman, block, tip, pblockindex, *llmq::chainLocksHandler, *llmq::quorumInstantSendManager, showTxDetails);
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std::string strJSON = objBlock.write() + "\n";
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req->WriteHeader("Content-Type", "application/json");
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req->WriteReply(HTTP_OK, strJSON);
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return true;
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}
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default: {
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return RESTERR(req, HTTP_NOT_FOUND, "output format not found (available: " + AvailableDataFormatsString() + ")");
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}
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}
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}
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static bool rest_block_extended(const CoreContext& context, HTTPRequest* req, const std::string& strURIPart)
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{
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return rest_block(context, req, strURIPart, true);
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}
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static bool rest_block_notxdetails(const CoreContext& context, HTTPRequest* req, const std::string& strURIPart)
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{
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return rest_block(context, req, strURIPart, false);
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}
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// A bit of a hack - dependency on a function defined in rpc/blockchain.cpp
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RPCHelpMan getblockchaininfo();
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static bool rest_chaininfo(const CoreContext& context, HTTPRequest* req, const std::string& strURIPart)
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{
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if (!CheckWarmup(req))
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return false;
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std::string param;
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const RetFormat rf = ParseDataFormat(param, strURIPart);
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switch (rf) {
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case RetFormat::JSON: {
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JSONRPCRequest jsonRequest;
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jsonRequest.context = context;
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jsonRequest.params = UniValue(UniValue::VARR);
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UniValue chainInfoObject = getblockchaininfo().HandleRequest(jsonRequest);
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std::string strJSON = chainInfoObject.write() + "\n";
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req->WriteHeader("Content-Type", "application/json");
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req->WriteReply(HTTP_OK, strJSON);
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return true;
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}
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default: {
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return RESTERR(req, HTTP_NOT_FOUND, "output format not found (available: json)");
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}
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}
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}
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static bool rest_mempool_info(const CoreContext& context, HTTPRequest* req, const std::string& strURIPart)
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{
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if (!CheckWarmup(req))
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return false;
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const CTxMemPool* mempool = GetMemPool(context, req);
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if (!mempool) return false;
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std::string param;
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const RetFormat rf = ParseDataFormat(param, strURIPart);
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switch (rf) {
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case RetFormat::JSON: {
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UniValue mempoolInfoObject = MempoolInfoToJSON(*mempool, *llmq::quorumInstantSendManager);
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std::string strJSON = mempoolInfoObject.write() + "\n";
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req->WriteHeader("Content-Type", "application/json");
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req->WriteReply(HTTP_OK, strJSON);
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return true;
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}
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default: {
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return RESTERR(req, HTTP_NOT_FOUND, "output format not found (available: json)");
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}
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}
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}
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static bool rest_mempool_contents(const CoreContext& context, HTTPRequest* req, const std::string& strURIPart)
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{
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if (!CheckWarmup(req)) return false;
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const CTxMemPool* mempool = GetMemPool(context, req);
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if (!mempool) return false;
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std::string param;
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const RetFormat rf = ParseDataFormat(param, strURIPart);
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switch (rf) {
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case RetFormat::JSON: {
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UniValue mempoolObject = MempoolToJSON(*mempool, llmq::quorumInstantSendManager.get(), true);
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std::string strJSON = mempoolObject.write() + "\n";
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req->WriteHeader("Content-Type", "application/json");
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req->WriteReply(HTTP_OK, strJSON);
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return true;
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}
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default: {
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return RESTERR(req, HTTP_NOT_FOUND, "output format not found (available: json)");
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}
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}
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}
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static bool rest_tx(const CoreContext& context, HTTPRequest* req, const std::string& strURIPart)
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{
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if (!CheckWarmup(req))
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return false;
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std::string hashStr;
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const RetFormat rf = ParseDataFormat(hashStr, strURIPart);
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uint256 hash;
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if (!ParseHashStr(hashStr, hash))
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return RESTERR(req, HTTP_BAD_REQUEST, "Invalid hash: " + hashStr);
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if (g_txindex) {
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g_txindex->BlockUntilSyncedToCurrentChain();
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}
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const NodeContext* const node = GetNodeContext(context, req);
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if (!node) return false;
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uint256 hashBlock = uint256();
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const CTransactionRef tx = GetTransaction(/* block_index */ nullptr, node->mempool.get(), hash, Params().GetConsensus(), hashBlock);
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if (!tx) {
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return RESTERR(req, HTTP_NOT_FOUND, hashStr + " not found");
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}
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switch (rf) {
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case RetFormat::BINARY: {
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CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
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ssTx << tx;
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std::string binaryTx = ssTx.str();
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req->WriteHeader("Content-Type", "application/octet-stream");
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req->WriteReply(HTTP_OK, binaryTx);
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return true;
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}
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case RetFormat::HEX: {
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CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
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ssTx << tx;
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std::string strHex = HexStr(ssTx) + "\n";
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req->WriteHeader("Content-Type", "text/plain");
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req->WriteReply(HTTP_OK, strHex);
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return true;
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}
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case RetFormat::JSON: {
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UniValue objTx(UniValue::VOBJ);
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TxToUniv(*tx, hashBlock, objTx);
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std::string strJSON = objTx.write() + "\n";
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req->WriteHeader("Content-Type", "application/json");
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req->WriteReply(HTTP_OK, strJSON);
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return true;
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}
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default: {
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return RESTERR(req, HTTP_NOT_FOUND, "output format not found (available: " + AvailableDataFormatsString() + ")");
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}
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}
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}
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static bool rest_getutxos(const CoreContext& context, HTTPRequest* req, const std::string& strURIPart)
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{
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if (!CheckWarmup(req))
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return false;
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std::string param;
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const RetFormat rf = ParseDataFormat(param, strURIPart);
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std::vector<std::string> uriParts;
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if (param.length() > 1)
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{
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std::string strUriParams = param.substr(1);
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uriParts = SplitString(strUriParams, '/');
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}
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// throw exception in case of an empty request
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std::string strRequestMutable = req->ReadBody();
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if (strRequestMutable.length() == 0 && uriParts.size() == 0)
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return RESTERR(req, HTTP_BAD_REQUEST, "Error: empty request");
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bool fInputParsed = false;
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bool fCheckMemPool = false;
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std::vector<COutPoint> vOutPoints;
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// parse/deserialize input
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// input-format = output-format, rest/getutxos/bin requires binary input, gives binary output, ...
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if (uriParts.size() > 0)
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{
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//inputs is sent over URI scheme (/rest/getutxos/checkmempool/txid1-n/txid2-n/...)
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if (uriParts[0] == "checkmempool") fCheckMemPool = true;
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|
|
for (size_t i = (fCheckMemPool) ? 1 : 0; i < uriParts.size(); i++)
|
|
{
|
|
uint256 txid;
|
|
int32_t nOutput;
|
|
std::string strTxid = uriParts[i].substr(0, uriParts[i].find('-'));
|
|
std::string strOutput = uriParts[i].substr(uriParts[i].find('-')+1);
|
|
|
|
if (!ParseInt32(strOutput, &nOutput) || !IsHex(strTxid))
|
|
return RESTERR(req, HTTP_BAD_REQUEST, "Parse error");
|
|
|
|
txid.SetHex(strTxid);
|
|
vOutPoints.push_back(COutPoint(txid, (uint32_t)nOutput));
|
|
}
|
|
|
|
if (vOutPoints.size() > 0)
|
|
fInputParsed = true;
|
|
else
|
|
return RESTERR(req, HTTP_BAD_REQUEST, "Error: empty request");
|
|
}
|
|
|
|
switch (rf) {
|
|
case RetFormat::HEX: {
|
|
// convert hex to bin, continue then with bin part
|
|
std::vector<unsigned char> strRequestV = ParseHex(strRequestMutable);
|
|
strRequestMutable.assign(strRequestV.begin(), strRequestV.end());
|
|
[[fallthrough]];
|
|
}
|
|
|
|
case RetFormat::BINARY: {
|
|
try {
|
|
//deserialize only if user sent a request
|
|
if (strRequestMutable.size() > 0)
|
|
{
|
|
if (fInputParsed) //don't allow sending input over URI and HTTP RAW DATA
|
|
return RESTERR(req, HTTP_BAD_REQUEST, "Combination of URI scheme inputs and raw post data is not allowed");
|
|
|
|
CDataStream oss(SER_NETWORK, PROTOCOL_VERSION);
|
|
oss << strRequestMutable;
|
|
oss >> fCheckMemPool;
|
|
oss >> vOutPoints;
|
|
}
|
|
} catch (const std::ios_base::failure&) {
|
|
// abort in case of unreadable binary data
|
|
return RESTERR(req, HTTP_BAD_REQUEST, "Parse error");
|
|
}
|
|
break;
|
|
}
|
|
|
|
case RetFormat::JSON: {
|
|
if (!fInputParsed)
|
|
return RESTERR(req, HTTP_BAD_REQUEST, "Error: empty request");
|
|
break;
|
|
}
|
|
default: {
|
|
return RESTERR(req, HTTP_NOT_FOUND, "output format not found (available: " + AvailableDataFormatsString() + ")");
|
|
}
|
|
}
|
|
|
|
// limit max outpoints
|
|
if (vOutPoints.size() > MAX_GETUTXOS_OUTPOINTS)
|
|
return RESTERR(req, HTTP_BAD_REQUEST, strprintf("Error: max outpoints exceeded (max: %d, tried: %d)", MAX_GETUTXOS_OUTPOINTS, vOutPoints.size()));
|
|
|
|
// check spentness and form a bitmap (as well as a JSON capable human-readable string representation)
|
|
std::vector<unsigned char> bitmap;
|
|
std::vector<CCoin> outs;
|
|
std::string bitmapStringRepresentation;
|
|
std::vector<bool> hits;
|
|
bitmap.resize((vOutPoints.size() + 7) / 8);
|
|
ChainstateManager* maybe_chainman = GetChainman(context, req);
|
|
if (!maybe_chainman) return false;
|
|
ChainstateManager& chainman = *maybe_chainman;
|
|
{
|
|
auto process_utxos = [&vOutPoints, &outs, &hits](const CCoinsView& view, const CTxMemPool& mempool) {
|
|
for (const COutPoint& vOutPoint : vOutPoints) {
|
|
Coin coin;
|
|
bool hit = !mempool.isSpent(vOutPoint) && view.GetCoin(vOutPoint, coin);
|
|
hits.push_back(hit);
|
|
if (hit) outs.emplace_back(std::move(coin));
|
|
}
|
|
};
|
|
|
|
if (fCheckMemPool) {
|
|
const CTxMemPool* mempool = GetMemPool(context, req);
|
|
if (!mempool) return false;
|
|
// use db+mempool as cache backend in case user likes to query mempool
|
|
LOCK2(cs_main, mempool->cs);
|
|
CCoinsViewCache& viewChain = chainman.ActiveChainstate().CoinsTip();
|
|
CCoinsViewMemPool viewMempool(&viewChain, *mempool);
|
|
process_utxos(viewMempool, *mempool);
|
|
} else {
|
|
LOCK(cs_main); // no need to lock mempool!
|
|
process_utxos(chainman.ActiveChainstate().CoinsTip(), CTxMemPool());
|
|
}
|
|
|
|
for (size_t i = 0; i < hits.size(); ++i) {
|
|
const bool hit = hits[i];
|
|
bitmapStringRepresentation.append(hit ? "1" : "0"); // form a binary string representation (human-readable for json output)
|
|
bitmap[i / 8] |= ((uint8_t)hit) << (i % 8);
|
|
}
|
|
}
|
|
|
|
switch (rf) {
|
|
case RetFormat::BINARY: {
|
|
// serialize data
|
|
// use exact same output as mentioned in Bip64
|
|
CDataStream ssGetUTXOResponse(SER_NETWORK, PROTOCOL_VERSION);
|
|
ssGetUTXOResponse << chainman.ActiveChain().Height() << chainman.ActiveChain().Tip()->GetBlockHash() << bitmap << outs;
|
|
std::string ssGetUTXOResponseString = ssGetUTXOResponse.str();
|
|
|
|
req->WriteHeader("Content-Type", "application/octet-stream");
|
|
req->WriteReply(HTTP_OK, ssGetUTXOResponseString);
|
|
return true;
|
|
}
|
|
|
|
case RetFormat::HEX: {
|
|
CDataStream ssGetUTXOResponse(SER_NETWORK, PROTOCOL_VERSION);
|
|
ssGetUTXOResponse << chainman.ActiveChain().Height() << chainman.ActiveChain().Tip()->GetBlockHash() << bitmap << outs;
|
|
std::string strHex = HexStr(ssGetUTXOResponse) + "\n";
|
|
|
|
req->WriteHeader("Content-Type", "text/plain");
|
|
req->WriteReply(HTTP_OK, strHex);
|
|
return true;
|
|
}
|
|
|
|
case RetFormat::JSON: {
|
|
UniValue objGetUTXOResponse(UniValue::VOBJ);
|
|
|
|
// pack in some essentials
|
|
// use more or less the same output as mentioned in Bip64
|
|
objGetUTXOResponse.pushKV("chainHeight", chainman.ActiveChain().Height());
|
|
objGetUTXOResponse.pushKV("chaintipHash", chainman.ActiveChain().Tip()->GetBlockHash().GetHex());
|
|
objGetUTXOResponse.pushKV("bitmap", bitmapStringRepresentation);
|
|
|
|
UniValue utxos(UniValue::VARR);
|
|
for (const CCoin& coin : outs) {
|
|
UniValue utxo(UniValue::VOBJ);
|
|
utxo.pushKV("height", (int32_t)coin.nHeight);
|
|
utxo.pushKV("value", ValueFromAmount(coin.out.nValue));
|
|
|
|
// include the script in a json output
|
|
UniValue o(UniValue::VOBJ);
|
|
ScriptPubKeyToUniv(coin.out.scriptPubKey, o, true);
|
|
utxo.pushKV("scriptPubKey", o);
|
|
utxos.push_back(utxo);
|
|
}
|
|
objGetUTXOResponse.pushKV("utxos", utxos);
|
|
|
|
// return json string
|
|
std::string strJSON = objGetUTXOResponse.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_blockhash_by_height(const CoreContext& context, HTTPRequest* req,
|
|
const std::string& str_uri_part)
|
|
{
|
|
if (!CheckWarmup(req)) return false;
|
|
std::string height_str;
|
|
const RetFormat rf = ParseDataFormat(height_str, str_uri_part);
|
|
|
|
int32_t blockheight = -1; // Initialization done only to prevent valgrind false positive, see https://github.com/bitcoin/bitcoin/pull/18785
|
|
if (!ParseInt32(height_str, &blockheight) || blockheight < 0) {
|
|
return RESTERR(req, HTTP_BAD_REQUEST, "Invalid height: " + SanitizeString(height_str));
|
|
}
|
|
|
|
CBlockIndex* pblockindex = nullptr;
|
|
{
|
|
ChainstateManager* maybe_chainman = GetChainman(context, req);
|
|
if (!maybe_chainman) return false;
|
|
ChainstateManager& chainman = *maybe_chainman;
|
|
LOCK(cs_main);
|
|
const CChain& active_chain = chainman.ActiveChain();
|
|
if (blockheight > active_chain.Height()) {
|
|
return RESTERR(req, HTTP_NOT_FOUND, "Block height out of range");
|
|
}
|
|
pblockindex = active_chain[blockheight];
|
|
}
|
|
switch (rf) {
|
|
case RetFormat::BINARY: {
|
|
CDataStream ss_blockhash(SER_NETWORK, PROTOCOL_VERSION);
|
|
ss_blockhash << pblockindex->GetBlockHash();
|
|
req->WriteHeader("Content-Type", "application/octet-stream");
|
|
req->WriteReply(HTTP_OK, ss_blockhash.str());
|
|
return true;
|
|
}
|
|
case RetFormat::HEX: {
|
|
req->WriteHeader("Content-Type", "text/plain");
|
|
req->WriteReply(HTTP_OK, pblockindex->GetBlockHash().GetHex() + "\n");
|
|
return true;
|
|
}
|
|
case RetFormat::JSON: {
|
|
req->WriteHeader("Content-Type", "application/json");
|
|
UniValue resp = UniValue(UniValue::VOBJ);
|
|
resp.pushKV("blockhash", pblockindex->GetBlockHash().GetHex());
|
|
req->WriteReply(HTTP_OK, resp.write() + "\n");
|
|
return true;
|
|
}
|
|
default: {
|
|
return RESTERR(req, HTTP_NOT_FOUND, "output format not found (available: " + AvailableDataFormatsString() + ")");
|
|
}
|
|
}
|
|
}
|
|
|
|
static const struct {
|
|
const char* prefix;
|
|
bool (*handler)(const CoreContext& context, HTTPRequest* req, const std::string& strReq);
|
|
} uri_prefixes[] = {
|
|
{"/rest/tx/", rest_tx},
|
|
{"/rest/block/notxdetails/", rest_block_notxdetails},
|
|
{"/rest/block/", rest_block_extended},
|
|
{"/rest/chaininfo", rest_chaininfo},
|
|
{"/rest/mempool/info", rest_mempool_info},
|
|
{"/rest/mempool/contents", rest_mempool_contents},
|
|
{"/rest/headers/", rest_headers},
|
|
{"/rest/getutxos", rest_getutxos},
|
|
{"/rest/blockhashbyheight/", rest_blockhash_by_height},
|
|
};
|
|
|
|
void StartREST(const CoreContext& context)
|
|
{
|
|
for (const auto& up : uri_prefixes) {
|
|
auto handler = [context, up](HTTPRequest* req, const std::string& prefix) { return up.handler(context, req, prefix); };
|
|
RegisterHTTPHandler(up.prefix, false, handler);
|
|
}
|
|
}
|
|
|
|
void InterruptREST()
|
|
{
|
|
}
|
|
|
|
void StopREST()
|
|
{
|
|
for (const auto& up : uri_prefixes) {
|
|
UnregisterHTTPHandler(up.prefix, false);
|
|
}
|
|
}
|