5e0c221356
Shutting down the HTTP server currently breaks off all current requests. This can create a race condition with RPC `stop` command, where the calling process never receives confirmation. This change removes the listening sockets on shutdown so that no new requests can come in, but no longer breaks off requests in progress. Meant to fix #6717.
570 lines
22 KiB
C++
570 lines
22 KiB
C++
// Copyright (c) 2010 Satoshi Nakamoto
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// Copyright (c) 2009-2014 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 "rpcserver.h"
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#include "base58.h"
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#include "init.h"
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#include "random.h"
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#include "sync.h"
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#include "ui_interface.h"
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#include "util.h"
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#include "utilstrencodings.h"
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#include "univalue/univalue.h"
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#include <boost/bind.hpp>
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#include <boost/filesystem.hpp>
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#include <boost/foreach.hpp>
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#include <boost/iostreams/concepts.hpp>
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#include <boost/iostreams/stream.hpp>
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#include <boost/shared_ptr.hpp>
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#include <boost/signals2/signal.hpp>
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#include <boost/thread.hpp>
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#include <boost/algorithm/string/case_conv.hpp> // for to_upper()
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using namespace RPCServer;
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using namespace std;
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static bool fRPCRunning = false;
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static bool fRPCInWarmup = true;
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static std::string rpcWarmupStatus("RPC server started");
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static CCriticalSection cs_rpcWarmup;
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/* Timer-creating functions */
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static std::vector<RPCTimerInterface*> timerInterfaces;
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/* Map of name to timer.
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* @note Can be changed to std::unique_ptr when C++11 */
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static std::map<std::string, boost::shared_ptr<RPCTimerBase> > deadlineTimers;
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static struct CRPCSignals
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{
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boost::signals2::signal<void ()> Started;
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boost::signals2::signal<void ()> Stopped;
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boost::signals2::signal<void (const CRPCCommand&)> PreCommand;
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boost::signals2::signal<void (const CRPCCommand&)> PostCommand;
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} g_rpcSignals;
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void RPCServer::OnStarted(boost::function<void ()> slot)
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{
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g_rpcSignals.Started.connect(slot);
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}
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void RPCServer::OnStopped(boost::function<void ()> slot)
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{
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g_rpcSignals.Stopped.connect(slot);
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}
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void RPCServer::OnPreCommand(boost::function<void (const CRPCCommand&)> slot)
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{
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g_rpcSignals.PreCommand.connect(boost::bind(slot, _1));
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}
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void RPCServer::OnPostCommand(boost::function<void (const CRPCCommand&)> slot)
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{
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g_rpcSignals.PostCommand.connect(boost::bind(slot, _1));
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}
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void RPCTypeCheck(const UniValue& params,
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const list<UniValue::VType>& typesExpected,
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bool fAllowNull)
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{
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unsigned int i = 0;
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BOOST_FOREACH(UniValue::VType t, typesExpected)
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{
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if (params.size() <= i)
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break;
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const UniValue& v = params[i];
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if (!((v.type() == t) || (fAllowNull && (v.isNull()))))
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{
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string err = strprintf("Expected type %s, got %s",
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uvTypeName(t), uvTypeName(v.type()));
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throw JSONRPCError(RPC_TYPE_ERROR, err);
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}
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i++;
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}
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}
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void RPCTypeCheckObj(const UniValue& o,
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const map<string, UniValue::VType>& typesExpected,
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bool fAllowNull)
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{
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BOOST_FOREACH(const PAIRTYPE(string, UniValue::VType)& t, typesExpected)
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{
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const UniValue& v = find_value(o, t.first);
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if (!fAllowNull && v.isNull())
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throw JSONRPCError(RPC_TYPE_ERROR, strprintf("Missing %s", t.first));
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if (!((v.type() == t.second) || (fAllowNull && (v.isNull()))))
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{
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string err = strprintf("Expected type %s for %s, got %s",
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uvTypeName(t.second), t.first, uvTypeName(v.type()));
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throw JSONRPCError(RPC_TYPE_ERROR, err);
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}
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}
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}
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CAmount AmountFromValue(const UniValue& value)
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{
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if (!value.isNum() && !value.isStr())
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throw JSONRPCError(RPC_TYPE_ERROR, "Amount is not a number or string");
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CAmount amount;
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if (!ParseFixedPoint(value.getValStr(), 8, &amount))
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throw JSONRPCError(RPC_TYPE_ERROR, "Invalid amount");
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if (!MoneyRange(amount))
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throw JSONRPCError(RPC_TYPE_ERROR, "Amount out of range");
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return amount;
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}
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UniValue ValueFromAmount(const CAmount& amount)
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{
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bool sign = amount < 0;
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int64_t n_abs = (sign ? -amount : amount);
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int64_t quotient = n_abs / COIN;
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int64_t remainder = n_abs % COIN;
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return UniValue(UniValue::VNUM,
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strprintf("%s%d.%08d", sign ? "-" : "", quotient, remainder));
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}
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uint256 ParseHashV(const UniValue& v, string strName)
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{
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string strHex;
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if (v.isStr())
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strHex = v.get_str();
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if (!IsHex(strHex)) // Note: IsHex("") is false
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throw JSONRPCError(RPC_INVALID_PARAMETER, strName+" must be hexadecimal string (not '"+strHex+"')");
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uint256 result;
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result.SetHex(strHex);
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return result;
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}
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uint256 ParseHashO(const UniValue& o, string strKey)
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{
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return ParseHashV(find_value(o, strKey), strKey);
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}
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vector<unsigned char> ParseHexV(const UniValue& v, string strName)
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{
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string strHex;
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if (v.isStr())
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strHex = v.get_str();
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if (!IsHex(strHex))
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throw JSONRPCError(RPC_INVALID_PARAMETER, strName+" must be hexadecimal string (not '"+strHex+"')");
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return ParseHex(strHex);
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}
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vector<unsigned char> ParseHexO(const UniValue& o, string strKey)
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{
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return ParseHexV(find_value(o, strKey), strKey);
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}
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/**
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* Note: This interface may still be subject to change.
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*/
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std::string CRPCTable::help(const std::string& strCommand) const
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{
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string strRet;
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string category;
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set<rpcfn_type> setDone;
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vector<pair<string, const CRPCCommand*> > vCommands;
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for (map<string, const CRPCCommand*>::const_iterator mi = mapCommands.begin(); mi != mapCommands.end(); ++mi)
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vCommands.push_back(make_pair(mi->second->category + mi->first, mi->second));
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sort(vCommands.begin(), vCommands.end());
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BOOST_FOREACH(const PAIRTYPE(string, const CRPCCommand*)& command, vCommands)
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{
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const CRPCCommand *pcmd = command.second;
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string strMethod = pcmd->name;
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// We already filter duplicates, but these deprecated screw up the sort order
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if (strMethod.find("label") != string::npos)
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continue;
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if ((strCommand != "" || pcmd->category == "hidden") && strMethod != strCommand)
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continue;
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try
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{
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UniValue params;
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rpcfn_type pfn = pcmd->actor;
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if (setDone.insert(pfn).second)
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(*pfn)(params, true);
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}
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catch (const std::exception& e)
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{
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// Help text is returned in an exception
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string strHelp = string(e.what());
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if (strCommand == "")
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{
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if (strHelp.find('\n') != string::npos)
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strHelp = strHelp.substr(0, strHelp.find('\n'));
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if (category != pcmd->category)
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{
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if (!category.empty())
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strRet += "\n";
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category = pcmd->category;
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string firstLetter = category.substr(0,1);
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boost::to_upper(firstLetter);
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strRet += "== " + firstLetter + category.substr(1) + " ==\n";
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}
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}
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strRet += strHelp + "\n";
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}
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}
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if (strRet == "")
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strRet = strprintf("help: unknown command: %s\n", strCommand);
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strRet = strRet.substr(0,strRet.size()-1);
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return strRet;
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}
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UniValue help(const UniValue& params, bool fHelp)
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{
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if (fHelp || params.size() > 1)
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throw runtime_error(
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"help ( \"command\" )\n"
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"\nList all commands, or get help for a specified command.\n"
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"\nArguments:\n"
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"1. \"command\" (string, optional) The command to get help on\n"
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"\nResult:\n"
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"\"text\" (string) The help text\n"
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);
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string strCommand;
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if (params.size() > 0)
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strCommand = params[0].get_str();
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return tableRPC.help(strCommand);
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}
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UniValue stop(const UniValue& params, bool fHelp)
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{
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// Accept the deprecated and ignored 'detach' boolean argument
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if (fHelp || params.size() > 1)
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throw runtime_error(
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"stop\n"
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"\nStop Bitcoin server.");
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// Event loop will exit after current HTTP requests have been handled, so
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// this reply will get back to the client.
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StartShutdown();
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return "Bitcoin server stopping";
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}
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/**
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* Call Table
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*/
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static const CRPCCommand vRPCCommands[] =
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{ // category name actor (function) okSafeMode
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// --------------------- ------------------------ ----------------------- ----------
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/* Overall control/query calls */
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{ "control", "getinfo", &getinfo, true }, /* uses wallet if enabled */
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{ "control", "help", &help, true },
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{ "control", "stop", &stop, true },
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/* P2P networking */
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{ "network", "getnetworkinfo", &getnetworkinfo, true },
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{ "network", "addnode", &addnode, true },
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{ "network", "disconnectnode", &disconnectnode, true },
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{ "network", "getaddednodeinfo", &getaddednodeinfo, true },
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{ "network", "getconnectioncount", &getconnectioncount, true },
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{ "network", "getnettotals", &getnettotals, true },
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{ "network", "getpeerinfo", &getpeerinfo, true },
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{ "network", "ping", &ping, true },
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{ "network", "setban", &setban, true },
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{ "network", "listbanned", &listbanned, true },
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{ "network", "clearbanned", &clearbanned, true },
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/* Block chain and UTXO */
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{ "blockchain", "getblockchaininfo", &getblockchaininfo, true },
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{ "blockchain", "getbestblockhash", &getbestblockhash, true },
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{ "blockchain", "getblockcount", &getblockcount, true },
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{ "blockchain", "getblock", &getblock, true },
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{ "blockchain", "getblockhash", &getblockhash, true },
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{ "blockchain", "getblockheader", &getblockheader, true },
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{ "blockchain", "getchaintips", &getchaintips, true },
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{ "blockchain", "getdifficulty", &getdifficulty, true },
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{ "blockchain", "getmempoolinfo", &getmempoolinfo, true },
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{ "blockchain", "getrawmempool", &getrawmempool, true },
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{ "blockchain", "gettxout", &gettxout, true },
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{ "blockchain", "gettxoutproof", &gettxoutproof, true },
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{ "blockchain", "verifytxoutproof", &verifytxoutproof, true },
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{ "blockchain", "gettxoutsetinfo", &gettxoutsetinfo, true },
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{ "blockchain", "verifychain", &verifychain, true },
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/* Mining */
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{ "mining", "getblocktemplate", &getblocktemplate, true },
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{ "mining", "getmininginfo", &getmininginfo, true },
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{ "mining", "getnetworkhashps", &getnetworkhashps, true },
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{ "mining", "prioritisetransaction", &prioritisetransaction, true },
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{ "mining", "submitblock", &submitblock, true },
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/* Coin generation */
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{ "generating", "getgenerate", &getgenerate, true },
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{ "generating", "setgenerate", &setgenerate, true },
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{ "generating", "generate", &generate, true },
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/* Raw transactions */
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{ "rawtransactions", "createrawtransaction", &createrawtransaction, true },
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{ "rawtransactions", "decoderawtransaction", &decoderawtransaction, true },
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{ "rawtransactions", "decodescript", &decodescript, true },
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{ "rawtransactions", "getrawtransaction", &getrawtransaction, true },
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{ "rawtransactions", "sendrawtransaction", &sendrawtransaction, false },
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{ "rawtransactions", "signrawtransaction", &signrawtransaction, false }, /* uses wallet if enabled */
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#ifdef ENABLE_WALLET
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{ "rawtransactions", "fundrawtransaction", &fundrawtransaction, false },
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#endif
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/* Utility functions */
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{ "util", "createmultisig", &createmultisig, true },
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{ "util", "validateaddress", &validateaddress, true }, /* uses wallet if enabled */
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{ "util", "verifymessage", &verifymessage, true },
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{ "util", "estimatefee", &estimatefee, true },
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{ "util", "estimatepriority", &estimatepriority, true },
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/* Not shown in help */
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{ "hidden", "invalidateblock", &invalidateblock, true },
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{ "hidden", "reconsiderblock", &reconsiderblock, true },
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{ "hidden", "setmocktime", &setmocktime, true },
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#ifdef ENABLE_WALLET
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{ "hidden", "resendwallettransactions", &resendwallettransactions, true},
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#endif
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#ifdef ENABLE_WALLET
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/* Wallet */
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{ "wallet", "addmultisigaddress", &addmultisigaddress, true },
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{ "wallet", "backupwallet", &backupwallet, true },
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{ "wallet", "dumpprivkey", &dumpprivkey, true },
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{ "wallet", "dumpwallet", &dumpwallet, true },
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{ "wallet", "encryptwallet", &encryptwallet, true },
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{ "wallet", "getaccountaddress", &getaccountaddress, true },
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{ "wallet", "getaccount", &getaccount, true },
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{ "wallet", "getaddressesbyaccount", &getaddressesbyaccount, true },
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{ "wallet", "getbalance", &getbalance, false },
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{ "wallet", "getnewaddress", &getnewaddress, true },
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{ "wallet", "getrawchangeaddress", &getrawchangeaddress, true },
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{ "wallet", "getreceivedbyaccount", &getreceivedbyaccount, false },
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{ "wallet", "getreceivedbyaddress", &getreceivedbyaddress, false },
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{ "wallet", "gettransaction", &gettransaction, false },
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{ "wallet", "getunconfirmedbalance", &getunconfirmedbalance, false },
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{ "wallet", "getwalletinfo", &getwalletinfo, false },
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{ "wallet", "importprivkey", &importprivkey, true },
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{ "wallet", "importwallet", &importwallet, true },
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{ "wallet", "importaddress", &importaddress, true },
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{ "wallet", "importpubkey", &importpubkey, true },
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{ "wallet", "keypoolrefill", &keypoolrefill, true },
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{ "wallet", "listaccounts", &listaccounts, false },
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{ "wallet", "listaddressgroupings", &listaddressgroupings, false },
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{ "wallet", "listlockunspent", &listlockunspent, false },
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{ "wallet", "listreceivedbyaccount", &listreceivedbyaccount, false },
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{ "wallet", "listreceivedbyaddress", &listreceivedbyaddress, false },
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{ "wallet", "listsinceblock", &listsinceblock, false },
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{ "wallet", "listtransactions", &listtransactions, false },
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{ "wallet", "listunspent", &listunspent, false },
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{ "wallet", "lockunspent", &lockunspent, true },
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{ "wallet", "move", &movecmd, false },
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{ "wallet", "sendfrom", &sendfrom, false },
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{ "wallet", "sendmany", &sendmany, false },
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{ "wallet", "sendtoaddress", &sendtoaddress, false },
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{ "wallet", "setaccount", &setaccount, true },
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{ "wallet", "settxfee", &settxfee, true },
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{ "wallet", "signmessage", &signmessage, true },
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{ "wallet", "walletlock", &walletlock, true },
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{ "wallet", "walletpassphrasechange", &walletpassphrasechange, true },
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{ "wallet", "walletpassphrase", &walletpassphrase, true },
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#endif // ENABLE_WALLET
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};
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CRPCTable::CRPCTable()
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{
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unsigned int vcidx;
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for (vcidx = 0; vcidx < (sizeof(vRPCCommands) / sizeof(vRPCCommands[0])); vcidx++)
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{
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const CRPCCommand *pcmd;
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pcmd = &vRPCCommands[vcidx];
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mapCommands[pcmd->name] = pcmd;
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}
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}
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const CRPCCommand *CRPCTable::operator[](const std::string &name) const
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{
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map<string, const CRPCCommand*>::const_iterator it = mapCommands.find(name);
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if (it == mapCommands.end())
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return NULL;
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return (*it).second;
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}
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bool StartRPC()
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{
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LogPrint("rpc", "Starting RPC\n");
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fRPCRunning = true;
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g_rpcSignals.Started();
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return true;
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}
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void InterruptRPC()
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{
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LogPrint("rpc", "Interrupting RPC\n");
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// Interrupt e.g. running longpolls
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fRPCRunning = false;
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}
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void StopRPC()
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{
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LogPrint("rpc", "Stopping RPC\n");
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deadlineTimers.clear();
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g_rpcSignals.Stopped();
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}
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bool IsRPCRunning()
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{
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return fRPCRunning;
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}
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void SetRPCWarmupStatus(const std::string& newStatus)
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{
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LOCK(cs_rpcWarmup);
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rpcWarmupStatus = newStatus;
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}
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void SetRPCWarmupFinished()
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{
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LOCK(cs_rpcWarmup);
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assert(fRPCInWarmup);
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fRPCInWarmup = false;
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}
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bool RPCIsInWarmup(std::string *outStatus)
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{
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LOCK(cs_rpcWarmup);
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if (outStatus)
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*outStatus = rpcWarmupStatus;
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return fRPCInWarmup;
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}
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void JSONRequest::parse(const UniValue& valRequest)
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{
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// Parse request
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if (!valRequest.isObject())
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throw JSONRPCError(RPC_INVALID_REQUEST, "Invalid Request object");
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const UniValue& request = valRequest.get_obj();
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// Parse id now so errors from here on will have the id
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id = find_value(request, "id");
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// Parse method
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UniValue valMethod = find_value(request, "method");
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if (valMethod.isNull())
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throw JSONRPCError(RPC_INVALID_REQUEST, "Missing method");
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if (!valMethod.isStr())
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throw JSONRPCError(RPC_INVALID_REQUEST, "Method must be a string");
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strMethod = valMethod.get_str();
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if (strMethod != "getblocktemplate")
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LogPrint("rpc", "ThreadRPCServer method=%s\n", SanitizeString(strMethod));
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// Parse params
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UniValue valParams = find_value(request, "params");
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if (valParams.isArray())
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|
params = valParams.get_array();
|
|
else if (valParams.isNull())
|
|
params = UniValue(UniValue::VARR);
|
|
else
|
|
throw JSONRPCError(RPC_INVALID_REQUEST, "Params must be an array");
|
|
}
|
|
|
|
static UniValue JSONRPCExecOne(const UniValue& req)
|
|
{
|
|
UniValue rpc_result(UniValue::VOBJ);
|
|
|
|
JSONRequest jreq;
|
|
try {
|
|
jreq.parse(req);
|
|
|
|
UniValue result = tableRPC.execute(jreq.strMethod, jreq.params);
|
|
rpc_result = JSONRPCReplyObj(result, NullUniValue, jreq.id);
|
|
}
|
|
catch (const UniValue& objError)
|
|
{
|
|
rpc_result = JSONRPCReplyObj(NullUniValue, objError, jreq.id);
|
|
}
|
|
catch (const std::exception& e)
|
|
{
|
|
rpc_result = JSONRPCReplyObj(NullUniValue,
|
|
JSONRPCError(RPC_PARSE_ERROR, e.what()), jreq.id);
|
|
}
|
|
|
|
return rpc_result;
|
|
}
|
|
|
|
std::string JSONRPCExecBatch(const UniValue& vReq)
|
|
{
|
|
UniValue ret(UniValue::VARR);
|
|
for (unsigned int reqIdx = 0; reqIdx < vReq.size(); reqIdx++)
|
|
ret.push_back(JSONRPCExecOne(vReq[reqIdx]));
|
|
|
|
return ret.write() + "\n";
|
|
}
|
|
|
|
UniValue CRPCTable::execute(const std::string &strMethod, const UniValue ¶ms) const
|
|
{
|
|
// Return immediately if in warmup
|
|
{
|
|
LOCK(cs_rpcWarmup);
|
|
if (fRPCInWarmup)
|
|
throw JSONRPCError(RPC_IN_WARMUP, rpcWarmupStatus);
|
|
}
|
|
|
|
// Find method
|
|
const CRPCCommand *pcmd = tableRPC[strMethod];
|
|
if (!pcmd)
|
|
throw JSONRPCError(RPC_METHOD_NOT_FOUND, "Method not found");
|
|
|
|
g_rpcSignals.PreCommand(*pcmd);
|
|
|
|
try
|
|
{
|
|
// Execute
|
|
return pcmd->actor(params, false);
|
|
}
|
|
catch (const std::exception& e)
|
|
{
|
|
throw JSONRPCError(RPC_MISC_ERROR, e.what());
|
|
}
|
|
|
|
g_rpcSignals.PostCommand(*pcmd);
|
|
}
|
|
|
|
std::string HelpExampleCli(const std::string& methodname, const std::string& args)
|
|
{
|
|
return "> bitcoin-cli " + methodname + " " + args + "\n";
|
|
}
|
|
|
|
std::string HelpExampleRpc(const std::string& methodname, const std::string& args)
|
|
{
|
|
return "> curl --user myusername --data-binary '{\"jsonrpc\": \"1.0\", \"id\":\"curltest\", "
|
|
"\"method\": \"" + methodname + "\", \"params\": [" + args + "] }' -H 'content-type: text/plain;' http://127.0.0.1:8332/\n";
|
|
}
|
|
|
|
void RPCRegisterTimerInterface(RPCTimerInterface *iface)
|
|
{
|
|
timerInterfaces.push_back(iface);
|
|
}
|
|
|
|
void RPCUnregisterTimerInterface(RPCTimerInterface *iface)
|
|
{
|
|
std::vector<RPCTimerInterface*>::iterator i = std::find(timerInterfaces.begin(), timerInterfaces.end(), iface);
|
|
assert(i != timerInterfaces.end());
|
|
timerInterfaces.erase(i);
|
|
}
|
|
|
|
void RPCRunLater(const std::string& name, boost::function<void(void)> func, int64_t nSeconds)
|
|
{
|
|
if (timerInterfaces.empty())
|
|
throw JSONRPCError(RPC_INTERNAL_ERROR, "No timer handler registered for RPC");
|
|
deadlineTimers.erase(name);
|
|
RPCTimerInterface* timerInterface = timerInterfaces[0];
|
|
LogPrint("rpc", "queue run of timer %s in %i seconds (using %s)\n", name, nSeconds, timerInterface->Name());
|
|
deadlineTimers.insert(std::make_pair(name, timerInterface->NewTimer(func, nSeconds*1000)));
|
|
}
|
|
|
|
const CRPCTable tableRPC;
|