/** Create a simulated `getinfo` request. */
UniValue PrepareRequest(const std::string& method, const std::vector<std::string>& args) override
{
if (!args.empty()) {
throw std::runtime_error("-getinfo takes no arguments");
}
UniValue result(UniValue::VARR);
result.push_back(JSONRPCRequestObj("getnetworkinfo", NullUniValue, ID_NETWORKINFO));
result.push_back(JSONRPCRequestObj("getblockchaininfo", NullUniValue, ID_BLOCKCHAININFO));
result.push_back(JSONRPCRequestObj("getwalletinfo", NullUniValue, ID_WALLETINFO));
return result;
}
UniValue PrepareRequest(const std::string& method, const std::vector<std::string>& args) override
{
UniValue params;
if(gArgs.GetBoolArg("-named", DEFAULT_NAMED)) {
params = RPCConvertNamedValues(method, args);
} else {
params = RPCConvertValues(method, args);
}
return JSONRPCRequestObj(method, params, 1);
}
UniValue CallRPC(const std::string& strMethod, const UniValue& params)
{
std::string host = GetArg("-rpcconnect", DEFAULT_RPCCONNECT);
int port = GetArg("-rpcport", BaseParams().RPCPort());
// Obtain event base
raii_event_base base = obtain_event_base();
// Synchronously look up hostname
raii_evhttp_connection evcon = obtain_evhttp_connection_base(base.get(), host, port);
evhttp_connection_set_timeout(evcon.get(), GetArg("-rpcclienttimeout", DEFAULT_HTTP_CLIENT_TIMEOUT));
HTTPReply response;
raii_evhttp_request req = obtain_evhttp_request(http_request_done, (void*)&response);
if (req == NULL)
throw std::runtime_error("create http request failed");
#if LIBEVENT_VERSION_NUMBER >= 0x02010300
evhttp_request_set_error_cb(req.get(), http_error_cb);
#endif
// Get credentials
std::string strRPCUserColonPass;
if (GetArg("-rpcpassword", "") == "") {
// Try fall back to cookie-based authentication if no password is provided
if (!GetAuthCookie(&strRPCUserColonPass)) {
throw std::runtime_error(strprintf(
_("Could not locate RPC credentials. No authentication cookie could be found, and no rpcpassword is set in the configuration file (%s)"),
GetConfigFile(GetArg("-conf", BITCOIN_CONF_FILENAME)).string().c_str()));
}
} else {
strRPCUserColonPass = GetArg("-rpcuser", "") + ":" + GetArg("-rpcpassword", "");
}
struct evkeyvalq* output_headers = evhttp_request_get_output_headers(req.get());
assert(output_headers);
evhttp_add_header(output_headers, "Host", host.c_str());
evhttp_add_header(output_headers, "Connection", "close");
evhttp_add_header(output_headers, "Authorization", (std::string("Basic ") + EncodeBase64(strRPCUserColonPass)).c_str());
// Attach request data
std::string strRequest = JSONRPCRequestObj(strMethod, params, 1).write() + "\n";
struct evbuffer* output_buffer = evhttp_request_get_output_buffer(req.get());
assert(output_buffer);
evbuffer_add(output_buffer, strRequest.data(), strRequest.size());
int r = evhttp_make_request(evcon.get(), req.get(), EVHTTP_REQ_POST, "/");
req.release(); // ownership moved to evcon in above call
if (r != 0) {
throw CConnectionFailed("send http request failed");
}
event_base_dispatch(base.get());
if (response.status == 0)
throw CConnectionFailed(strprintf("couldn't connect to server: %s (code %d)\n(make sure server is running and you are connecting to the correct RPC port)", http_errorstring(response.error), response.error));
else if (response.status == HTTP_UNAUTHORIZED)
throw std::runtime_error("incorrect rpcuser or rpcpassword (authorization failed)");
else if (response.status >= 400 && response.status != HTTP_BAD_REQUEST && response.status != HTTP_NOT_FOUND && response.status != HTTP_INTERNAL_SERVER_ERROR)
throw std::runtime_error(strprintf("server returned HTTP error %d", response.status));
else if (response.body.empty())
throw std::runtime_error("no response from server");
// Parse reply
UniValue valReply(UniValue::VSTR);
if (!valReply.read(response.body))
throw std::runtime_error("couldn't parse reply from server");
const UniValue& reply = valReply.get_obj();
if (reply.empty())
throw std::runtime_error("expected reply to have result, error and id properties");
return reply;
}
