Branch data 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 : 0 : struct RPCCommandExecutionInfo
38 : : {
39 : : std::string method;
40 : : SteadyClock::time_point start;
41 : : };
42 : :
43 : 0 : 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 [ # # ]: 0 : 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 : 110 : void CRPCTable::appendCommand(const std::string& name, const CRPCCommand* pcmd)
271 : : {
272 : 110 : CHECK_NONFATAL(!IsRPCRunning()); // Only add commands before rpc is running
273 : :
274 : 110 : mapCommands[name].push_back(pcmd);
275 : 110 : }
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 : 110 : bool IsRPCRunning()
322 : : {
323 : 110 : 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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