Line data Source code
1 : // Copyright (c) 2010 Satoshi Nakamoto
2 : // Copyright (c) 2009-2022 The Bitcoin Core developers
3 : // Distributed under the MIT software license, see the accompanying
4 : // file COPYING or http://www.opensource.org/licenses/mit-license.php.
5 :
6 : #include <rpc/server.h>
7 :
8 : #include <common/args.h>
9 : #include <common/system.h>
10 : #include <logging.h>
11 : #include <rpc/util.h>
12 : #include <shutdown.h>
13 : #include <sync.h>
14 : #include <util/strencodings.h>
15 : #include <util/string.h>
16 : #include <util/time.h>
17 2 :
18 2 : #include <boost/signals2/signal.hpp>
19 :
20 : #include <cassert>
21 : #include <chrono>
22 : #include <memory>
23 : #include <mutex>
24 : #include <unordered_map>
25 :
26 : static GlobalMutex g_rpc_warmup_mutex;
27 2 : static std::atomic<bool> g_rpc_running{false};
28 : static bool fRPCInWarmup GUARDED_BY(g_rpc_warmup_mutex) = true;
29 2 : static std::string rpcWarmupStatus GUARDED_BY(g_rpc_warmup_mutex) = "RPC server started";
30 : /* Timer-creating functions */
31 : static RPCTimerInterface* timerInterface = nullptr;
32 : /* Map of name to timer. */
33 : static GlobalMutex g_deadline_timers_mutex;
34 2 : static std::map<std::string, std::unique_ptr<RPCTimerBase> > deadlineTimers GUARDED_BY(g_deadline_timers_mutex);
35 : static bool ExecuteCommand(const CRPCCommand& command, const JSONRPCRequest& request, UniValue& result, bool last_handler);
36 :
37 : struct RPCCommandExecutionInfo
38 : {
39 : std::string method;
40 : SteadyClock::time_point start;
41 : };
42 :
43 : struct RPCServerInfo
44 : {
45 : Mutex mutex;
46 : std::list<RPCCommandExecutionInfo> active_commands GUARDED_BY(mutex);
47 : };
48 :
49 2 : static RPCServerInfo g_rpc_server_info;
50 :
51 : struct RPCCommandExecution
52 : {
53 0 : std::list<RPCCommandExecutionInfo>::iterator it;
54 0 : explicit RPCCommandExecution(const std::string& method)
55 : {
56 0 : LOCK(g_rpc_server_info.mutex);
57 0 : it = g_rpc_server_info.active_commands.insert(g_rpc_server_info.active_commands.end(), {method, SteadyClock::now()});
58 0 : }
59 0 : ~RPCCommandExecution()
60 : {
61 0 : LOCK(g_rpc_server_info.mutex);
62 0 : g_rpc_server_info.active_commands.erase(it);
63 0 : }
64 : };
65 :
66 2 : static struct CRPCSignals
67 : {
68 : boost::signals2::signal<void ()> Started;
69 : boost::signals2::signal<void ()> Stopped;
70 2 : } g_rpcSignals;
71 :
72 0 : void RPCServer::OnStarted(std::function<void ()> slot)
73 : {
74 2 : g_rpcSignals.Started.connect(slot);
75 0 : }
76 :
77 0 : void RPCServer::OnStopped(std::function<void ()> slot)
78 : {
79 0 : g_rpcSignals.Stopped.connect(slot);
80 0 : }
81 :
82 0 : std::string CRPCTable::help(const std::string& strCommand, const JSONRPCRequest& helpreq) const
83 : {
84 0 : std::string strRet;
85 0 : std::string category;
86 0 : std::set<intptr_t> setDone;
87 0 : std::vector<std::pair<std::string, const CRPCCommand*> > vCommands;
88 0 : vCommands.reserve(mapCommands.size());
89 :
90 0 : for (const auto& entry : mapCommands)
91 2 : vCommands.push_back(make_pair(entry.second.front()->category + entry.first, entry.second.front()));
92 0 : sort(vCommands.begin(), vCommands.end());
93 :
94 0 : JSONRPCRequest jreq = helpreq;
95 0 : jreq.mode = JSONRPCRequest::GET_HELP;
96 0 : jreq.params = UniValue();
97 :
98 0 : for (const std::pair<std::string, const CRPCCommand*>& command : vCommands)
99 2 : {
100 0 : const CRPCCommand *pcmd = command.second;
101 0 : std::string strMethod = pcmd->name;
102 0 : if ((strCommand != "" || pcmd->category == "hidden") && strMethod != strCommand)
103 0 : continue;
104 0 : jreq.strMethod = strMethod;
105 : try
106 : {
107 0 : UniValue unused_result;
108 0 : if (setDone.insert(pcmd->unique_id).second)
109 0 : pcmd->actor(jreq, unused_result, /*last_handler=*/true);
110 0 : }
111 : catch (const std::exception& e)
112 : {
113 : // Help text is returned in an exception
114 0 : std::string strHelp = std::string(e.what());
115 0 : if (strCommand == "")
116 : {
117 0 : if (strHelp.find('\n') != std::string::npos)
118 0 : strHelp = strHelp.substr(0, strHelp.find('\n'));
119 :
120 0 : if (category != pcmd->category)
121 : {
122 0 : if (!category.empty())
123 0 : strRet += "\n";
124 0 : category = pcmd->category;
125 0 : strRet += "== " + Capitalize(category) + " ==\n";
126 0 : }
127 0 : }
128 0 : strRet += strHelp + "\n";
129 0 : }
130 0 : }
131 0 : if (strRet == "")
132 0 : strRet = strprintf("help: unknown command: %s\n", strCommand);
133 0 : strRet = strRet.substr(0,strRet.size()-1);
134 0 : return strRet;
135 0 : }
136 :
137 4 : static RPCHelpMan help()
138 : {
139 8 : return RPCHelpMan{"help",
140 4 : "\nList all commands, or get help for a specified command.\n",
141 8 : {
142 4 : {"command", RPCArg::Type::STR, RPCArg::DefaultHint{"all commands"}, "The command to get help on"},
143 : },
144 12 : {
145 4 : RPCResult{RPCResult::Type::STR, "", "The help text"},
146 4 : RPCResult{RPCResult::Type::ANY, "", ""},
147 : },
148 4 : RPCExamples{""},
149 4 : [&](const RPCHelpMan& self, const JSONRPCRequest& jsonRequest) -> UniValue
150 4 : {
151 4 : std::string strCommand;
152 0 : if (jsonRequest.params.size() > 0) {
153 0 : strCommand = jsonRequest.params[0].get_str();
154 0 : }
155 0 : if (strCommand == "dump_all_command_conversions") {
156 : // Used for testing only, undocumented
157 0 : return tableRPC.dumpArgMap(jsonRequest);
158 : }
159 :
160 0 : return tableRPC.help(strCommand, jsonRequest);
161 0 : },
162 : };
163 0 : }
164 :
165 4 : static RPCHelpMan stop()
166 : {
167 4 : static const std::string RESULT{PACKAGE_NAME " stopping"};
168 8 : return RPCHelpMan{"stop",
169 : // Also accept the hidden 'wait' integer argument (milliseconds)
170 : // For instance, 'stop 1000' makes the call wait 1 second before returning
171 : // to the client (intended for testing)
172 4 : "\nRequest a graceful shutdown of " PACKAGE_NAME ".",
173 8 : {
174 4 : {"wait", RPCArg::Type::NUM, RPCArg::Optional::OMITTED, "how long to wait in ms", RPCArgOptions{.hidden=true}},
175 : },
176 4 : RPCResult{RPCResult::Type::STR, "", "A string with the content '" + RESULT + "'"},
177 4 : RPCExamples{""},
178 4 : [&](const RPCHelpMan& self, const JSONRPCRequest& jsonRequest) -> UniValue
179 : {
180 : // Event loop will exit after current HTTP requests have been handled, so
181 : // this reply will get back to the client.
182 0 : StartShutdown();
183 0 : if (jsonRequest.params[0].isNum()) {
184 0 : UninterruptibleSleep(std::chrono::milliseconds{jsonRequest.params[0].getInt<int>()});
185 0 : }
186 0 : return RESULT;
187 : },
188 : };
189 0 : }
190 :
191 4 : static RPCHelpMan uptime()
192 : {
193 8 : return RPCHelpMan{"uptime",
194 4 : "\nReturns the total uptime of the server.\n",
195 4 : {},
196 4 : RPCResult{
197 4 : RPCResult::Type::NUM, "", "The number of seconds that the server has been running"
198 : },
199 4 : RPCExamples{
200 4 : HelpExampleCli("uptime", "")
201 4 : + HelpExampleRpc("uptime", "")
202 : },
203 4 : [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
204 : {
205 0 : return GetTime() - GetStartupTime();
206 : }
207 : };
208 0 : }
209 :
210 4 : static RPCHelpMan getrpcinfo()
211 : {
212 8 : return RPCHelpMan{"getrpcinfo",
213 4 : "\nReturns details of the RPC server.\n",
214 4 : {},
215 4 : RPCResult{
216 4 : RPCResult::Type::OBJ, "", "",
217 12 : {
218 8 : {RPCResult::Type::ARR, "active_commands", "All active commands",
219 8 : {
220 8 : {RPCResult::Type::OBJ, "", "Information about an active command",
221 12 : {
222 4 : {RPCResult::Type::STR, "method", "The name of the RPC command"},
223 4 : {RPCResult::Type::NUM, "duration", "The running time in microseconds"},
224 : }},
225 : }},
226 4 : {RPCResult::Type::STR, "logpath", "The complete file path to the debug log"},
227 : }
228 : },
229 4 : RPCExamples{
230 4 : HelpExampleCli("getrpcinfo", "")
231 4 : + HelpExampleRpc("getrpcinfo", "")},
232 4 : [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
233 : {
234 0 : LOCK(g_rpc_server_info.mutex);
235 0 : UniValue active_commands(UniValue::VARR);
236 0 : for (const RPCCommandExecutionInfo& info : g_rpc_server_info.active_commands) {
237 0 : UniValue entry(UniValue::VOBJ);
238 0 : entry.pushKV("method", info.method);
239 0 : entry.pushKV("duration", int64_t{Ticks<std::chrono::microseconds>(SteadyClock::now() - info.start)});
240 0 : active_commands.push_back(entry);
241 0 : }
242 :
243 0 : UniValue result(UniValue::VOBJ);
244 0 : result.pushKV("active_commands", active_commands);
245 :
246 0 : const std::string path = LogInstance().m_file_path.u8string();
247 0 : UniValue log_path(UniValue::VSTR, path);
248 0 : result.pushKV("logpath", log_path);
249 :
250 0 : return result;
251 0 : }
252 : };
253 0 : }
254 :
255 10 : static const CRPCCommand vRPCCommands[]{
256 : /* Overall control/query calls */
257 2 : {"control", &getrpcinfo},
258 2 : {"control", &help},
259 2 : {"control", &stop},
260 2 : {"control", &uptime},
261 : };
262 :
263 2 : CRPCTable::CRPCTable()
264 : {
265 10 : for (const auto& c : vRPCCommands) {
266 8 : appendCommand(c.name, &c);
267 : }
268 2 : }
269 :
270 107 : void CRPCTable::appendCommand(const std::string& name, const CRPCCommand* pcmd)
271 : {
272 107 : CHECK_NONFATAL(!IsRPCRunning()); // Only add commands before rpc is running
273 :
274 107 : mapCommands[name].push_back(pcmd);
275 107 : }
276 :
277 0 : bool CRPCTable::removeCommand(const std::string& name, const CRPCCommand* pcmd)
278 : {
279 0 : auto it = mapCommands.find(name);
280 0 : if (it != mapCommands.end()) {
281 0 : auto new_end = std::remove(it->second.begin(), it->second.end(), pcmd);
282 0 : if (it->second.end() != new_end) {
283 0 : it->second.erase(new_end, it->second.end());
284 0 : return true;
285 : }
286 0 : }
287 0 : return false;
288 0 : }
289 :
290 0 : void StartRPC()
291 : {
292 0 : LogPrint(BCLog::RPC, "Starting RPC\n");
293 0 : g_rpc_running = true;
294 0 : g_rpcSignals.Started();
295 0 : }
296 :
297 0 : void InterruptRPC()
298 : {
299 : static std::once_flag g_rpc_interrupt_flag;
300 : // This function could be called twice if the GUI has been started with -server=1.
301 0 : std::call_once(g_rpc_interrupt_flag, []() {
302 0 : LogPrint(BCLog::RPC, "Interrupting RPC\n");
303 : // Interrupt e.g. running longpolls
304 0 : g_rpc_running = false;
305 0 : });
306 0 : }
307 :
308 0 : void StopRPC()
309 : {
310 : static std::once_flag g_rpc_stop_flag;
311 : // This function could be called twice if the GUI has been started with -server=1.
312 0 : assert(!g_rpc_running);
313 0 : std::call_once(g_rpc_stop_flag, []() {
314 0 : LogPrint(BCLog::RPC, "Stopping RPC\n");
315 0 : WITH_LOCK(g_deadline_timers_mutex, deadlineTimers.clear());
316 0 : DeleteAuthCookie();
317 0 : g_rpcSignals.Stopped();
318 0 : });
319 0 : }
320 :
321 107 : bool IsRPCRunning()
322 : {
323 107 : return g_rpc_running;
324 : }
325 :
326 0 : void RpcInterruptionPoint()
327 : {
328 0 : if (!IsRPCRunning()) throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "Shutting down");
329 0 : }
330 :
331 0 : void SetRPCWarmupStatus(const std::string& newStatus)
332 : {
333 0 : LOCK(g_rpc_warmup_mutex);
334 0 : rpcWarmupStatus = newStatus;
335 0 : }
336 :
337 0 : void SetRPCWarmupFinished()
338 : {
339 0 : LOCK(g_rpc_warmup_mutex);
340 0 : assert(fRPCInWarmup);
341 0 : fRPCInWarmup = false;
342 0 : }
343 :
344 0 : bool RPCIsInWarmup(std::string *outStatus)
345 : {
346 0 : LOCK(g_rpc_warmup_mutex);
347 0 : if (outStatus)
348 0 : *outStatus = rpcWarmupStatus;
349 0 : return fRPCInWarmup;
350 0 : }
351 :
352 0 : bool IsDeprecatedRPCEnabled(const std::string& method)
353 : {
354 0 : const std::vector<std::string> enabled_methods = gArgs.GetArgs("-deprecatedrpc");
355 :
356 0 : return find(enabled_methods.begin(), enabled_methods.end(), method) != enabled_methods.end();
357 0 : }
358 :
359 0 : static UniValue JSONRPCExecOne(JSONRPCRequest jreq, const UniValue& req)
360 : {
361 0 : UniValue rpc_result(UniValue::VOBJ);
362 :
363 : try {
364 0 : jreq.parse(req);
365 :
366 0 : UniValue result = tableRPC.execute(jreq);
367 0 : rpc_result = JSONRPCReplyObj(result, NullUniValue, jreq.id);
368 0 : }
369 : catch (const UniValue& objError)
370 : {
371 0 : rpc_result = JSONRPCReplyObj(NullUniValue, objError, jreq.id);
372 0 : }
373 : catch (const std::exception& e)
374 : {
375 0 : rpc_result = JSONRPCReplyObj(NullUniValue,
376 0 : JSONRPCError(RPC_PARSE_ERROR, e.what()), jreq.id);
377 0 : }
378 :
379 0 : return rpc_result;
380 0 : }
381 :
382 0 : std::string JSONRPCExecBatch(const JSONRPCRequest& jreq, const UniValue& vReq)
383 : {
384 0 : UniValue ret(UniValue::VARR);
385 0 : for (unsigned int reqIdx = 0; reqIdx < vReq.size(); reqIdx++)
386 0 : ret.push_back(JSONRPCExecOne(jreq, vReq[reqIdx]));
387 :
388 0 : return ret.write() + "\n";
389 0 : }
390 :
391 : /**
392 : * Process named arguments into a vector of positional arguments, based on the
393 : * passed-in specification for the RPC call's arguments.
394 : */
395 0 : static inline JSONRPCRequest transformNamedArguments(const JSONRPCRequest& in, const std::vector<std::pair<std::string, bool>>& argNames)
396 : {
397 0 : JSONRPCRequest out = in;
398 0 : out.params = UniValue(UniValue::VARR);
399 : // Build a map of parameters, and remove ones that have been processed, so that we can throw a focused error if
400 : // there is an unknown one.
401 0 : const std::vector<std::string>& keys = in.params.getKeys();
402 0 : const std::vector<UniValue>& values = in.params.getValues();
403 0 : std::unordered_map<std::string, const UniValue*> argsIn;
404 0 : for (size_t i=0; i<keys.size(); ++i) {
405 0 : auto [_, inserted] = argsIn.emplace(keys[i], &values[i]);
406 0 : if (!inserted) {
407 0 : throw JSONRPCError(RPC_INVALID_PARAMETER, "Parameter " + keys[i] + " specified multiple times");
408 : }
409 0 : }
410 : // Process expected parameters. If any parameters were left unspecified in
411 : // the request before a parameter that was specified, null values need to be
412 : // inserted at the unspecifed parameter positions, and the "hole" variable
413 : // below tracks the number of null values that need to be inserted.
414 : // The "initial_hole_size" variable stores the size of the initial hole,
415 : // i.e. how many initial positional arguments were left unspecified. This is
416 : // used after the for-loop to add initial positional arguments from the
417 : // "args" parameter, if present.
418 0 : int hole = 0;
419 0 : int initial_hole_size = 0;
420 0 : const std::string* initial_param = nullptr;
421 0 : UniValue options{UniValue::VOBJ};
422 0 : for (const auto& [argNamePattern, named_only]: argNames) {
423 0 : std::vector<std::string> vargNames = SplitString(argNamePattern, '|');
424 0 : auto fr = argsIn.end();
425 0 : for (const std::string & argName : vargNames) {
426 0 : fr = argsIn.find(argName);
427 0 : if (fr != argsIn.end()) {
428 0 : break;
429 : }
430 : }
431 :
432 : // Handle named-only parameters by pushing them into a temporary options
433 : // object, and then pushing the accumulated options as the next
434 : // positional argument.
435 0 : if (named_only) {
436 0 : if (fr != argsIn.end()) {
437 0 : if (options.exists(fr->first)) {
438 0 : throw JSONRPCError(RPC_INVALID_PARAMETER, "Parameter " + fr->first + " specified multiple times");
439 : }
440 0 : options.pushKVEnd(fr->first, *fr->second);
441 0 : argsIn.erase(fr);
442 0 : }
443 0 : continue;
444 : }
445 :
446 0 : if (!options.empty() || fr != argsIn.end()) {
447 0 : for (int i = 0; i < hole; ++i) {
448 : // Fill hole between specified parameters with JSON nulls,
449 : // but not at the end (for backwards compatibility with calls
450 : // that act based on number of specified parameters).
451 0 : out.params.push_back(UniValue());
452 0 : }
453 0 : hole = 0;
454 0 : if (!initial_param) initial_param = &argNamePattern;
455 0 : } else {
456 0 : hole += 1;
457 0 : if (out.params.empty()) initial_hole_size = hole;
458 : }
459 :
460 : // If named input parameter "fr" is present, push it onto out.params. If
461 : // options are present, push them onto out.params. If both are present,
462 : // throw an error.
463 0 : if (fr != argsIn.end()) {
464 0 : if (!options.empty()) {
465 0 : throw JSONRPCError(RPC_INVALID_PARAMETER, "Parameter " + fr->first + " conflicts with parameter " + options.getKeys().front());
466 : }
467 0 : out.params.push_back(*fr->second);
468 0 : argsIn.erase(fr);
469 0 : }
470 0 : if (!options.empty()) {
471 0 : out.params.push_back(std::move(options));
472 0 : options = UniValue{UniValue::VOBJ};
473 0 : }
474 0 : }
475 : // If leftover "args" param was found, use it as a source of positional
476 : // arguments and add named arguments after. This is a convenience for
477 : // clients that want to pass a combination of named and positional
478 : // arguments as described in doc/JSON-RPC-interface.md#parameter-passing
479 0 : auto positional_args{argsIn.extract("args")};
480 0 : if (positional_args && positional_args.mapped()->isArray()) {
481 0 : if (initial_hole_size < (int)positional_args.mapped()->size() && initial_param) {
482 0 : throw JSONRPCError(RPC_INVALID_PARAMETER, "Parameter " + *initial_param + " specified twice both as positional and named argument");
483 : }
484 : // Assign positional_args to out.params and append named_args after.
485 0 : UniValue named_args{std::move(out.params)};
486 0 : out.params = *positional_args.mapped();
487 0 : for (size_t i{out.params.size()}; i < named_args.size(); ++i) {
488 0 : out.params.push_back(named_args[i]);
489 0 : }
490 0 : }
491 : // If there are still arguments in the argsIn map, this is an error.
492 0 : if (!argsIn.empty()) {
493 0 : throw JSONRPCError(RPC_INVALID_PARAMETER, "Unknown named parameter " + argsIn.begin()->first);
494 : }
495 : // Return request with named arguments transformed to positional arguments
496 0 : return out;
497 0 : }
498 :
499 0 : static bool ExecuteCommands(const std::vector<const CRPCCommand*>& commands, const JSONRPCRequest& request, UniValue& result)
500 : {
501 0 : for (const auto& command : commands) {
502 0 : if (ExecuteCommand(*command, request, result, &command == &commands.back())) {
503 0 : return true;
504 : }
505 : }
506 0 : return false;
507 0 : }
508 :
509 0 : UniValue CRPCTable::execute(const JSONRPCRequest &request) const
510 : {
511 : // Return immediately if in warmup
512 : {
513 0 : LOCK(g_rpc_warmup_mutex);
514 0 : if (fRPCInWarmup)
515 0 : throw JSONRPCError(RPC_IN_WARMUP, rpcWarmupStatus);
516 0 : }
517 :
518 : // Find method
519 0 : auto it = mapCommands.find(request.strMethod);
520 0 : if (it != mapCommands.end()) {
521 0 : UniValue result;
522 0 : if (ExecuteCommands(it->second, request, result)) {
523 0 : return result;
524 : }
525 0 : }
526 0 : throw JSONRPCError(RPC_METHOD_NOT_FOUND, "Method not found");
527 0 : }
528 :
529 0 : static bool ExecuteCommand(const CRPCCommand& command, const JSONRPCRequest& request, UniValue& result, bool last_handler)
530 : {
531 : try {
532 0 : RPCCommandExecution execution(request.strMethod);
533 : // Execute, convert arguments to array if necessary
534 0 : if (request.params.isObject()) {
535 0 : return command.actor(transformNamedArguments(request, command.argNames), result, last_handler);
536 : } else {
537 0 : return command.actor(request, result, last_handler);
538 : }
539 0 : } catch (const UniValue::type_error& e) {
540 0 : throw JSONRPCError(RPC_TYPE_ERROR, e.what());
541 0 : } catch (const std::exception& e) {
542 0 : throw JSONRPCError(RPC_MISC_ERROR, e.what());
543 0 : }
544 0 : }
545 :
546 0 : std::vector<std::string> CRPCTable::listCommands() const
547 : {
548 0 : std::vector<std::string> commandList;
549 0 : commandList.reserve(mapCommands.size());
550 0 : for (const auto& i : mapCommands) commandList.emplace_back(i.first);
551 0 : return commandList;
552 0 : }
553 :
554 0 : UniValue CRPCTable::dumpArgMap(const JSONRPCRequest& args_request) const
555 : {
556 0 : JSONRPCRequest request = args_request;
557 0 : request.mode = JSONRPCRequest::GET_ARGS;
558 :
559 0 : UniValue ret{UniValue::VARR};
560 0 : for (const auto& cmd : mapCommands) {
561 0 : UniValue result;
562 0 : if (ExecuteCommands(cmd.second, request, result)) {
563 0 : for (const auto& values : result.getValues()) {
564 0 : ret.push_back(values);
565 : }
566 0 : }
567 0 : }
568 0 : return ret;
569 0 : }
570 :
571 0 : void RPCSetTimerInterfaceIfUnset(RPCTimerInterface *iface)
572 : {
573 0 : if (!timerInterface)
574 0 : timerInterface = iface;
575 0 : }
576 :
577 0 : void RPCSetTimerInterface(RPCTimerInterface *iface)
578 : {
579 0 : timerInterface = iface;
580 0 : }
581 :
582 0 : void RPCUnsetTimerInterface(RPCTimerInterface *iface)
583 : {
584 0 : if (timerInterface == iface)
585 0 : timerInterface = nullptr;
586 0 : }
587 :
588 0 : void RPCRunLater(const std::string& name, std::function<void()> func, int64_t nSeconds)
589 : {
590 0 : if (!timerInterface)
591 0 : throw JSONRPCError(RPC_INTERNAL_ERROR, "No timer handler registered for RPC");
592 0 : LOCK(g_deadline_timers_mutex);
593 0 : deadlineTimers.erase(name);
594 0 : LogPrint(BCLog::RPC, "queue run of timer %s in %i seconds (using %s)\n", name, nSeconds, timerInterface->Name());
595 0 : deadlineTimers.emplace(name, std::unique_ptr<RPCTimerBase>(timerInterface->NewTimer(func, nSeconds*1000)));
596 0 : }
597 :
598 0 : int RPCSerializationFlags()
599 : {
600 0 : int flag = 0;
601 0 : if (gArgs.GetIntArg("-rpcserialversion", DEFAULT_RPC_SERIALIZE_VERSION) == 0)
602 0 : flag |= SERIALIZE_TRANSACTION_NO_WITNESS;
603 0 : return flag;
604 0 : }
605 :
606 2 : CRPCTable tableRPC;
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