mirror of
https://github.com/bitcoin/bitcoin.git
synced 2024-11-19 18:09:47 +01:00
0b86e517ad
This is a prerequisite for introducing bilingual error messages. Note: #includes are arranged by clang-format-diff.py script.
271 lines
8.6 KiB
C++
271 lines
8.6 KiB
C++
// Copyright (c) 2015-2018 The Bitcoin Core developers
|
|
// Distributed under the MIT software license, see the accompanying
|
|
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
|
|
|
|
#include <httprpc.h>
|
|
|
|
#include <chainparams.h>
|
|
#include <crypto/hmac_sha256.h>
|
|
#include <httpserver.h>
|
|
#include <key_io.h>
|
|
#include <rpc/protocol.h>
|
|
#include <rpc/server.h>
|
|
#include <sync.h>
|
|
#include <ui_interface.h>
|
|
#include <util/strencodings.h>
|
|
#include <util/system.h>
|
|
#include <util/translation.h>
|
|
#include <walletinitinterface.h>
|
|
|
|
#include <memory>
|
|
#include <stdio.h>
|
|
|
|
#include <boost/algorithm/string.hpp> // boost::trim
|
|
|
|
/** WWW-Authenticate to present with 401 Unauthorized response */
|
|
static const char* WWW_AUTH_HEADER_DATA = "Basic realm=\"jsonrpc\"";
|
|
|
|
/** Simple one-shot callback timer to be used by the RPC mechanism to e.g.
|
|
* re-lock the wallet.
|
|
*/
|
|
class HTTPRPCTimer : public RPCTimerBase
|
|
{
|
|
public:
|
|
HTTPRPCTimer(struct event_base* eventBase, std::function<void()>& func, int64_t millis) :
|
|
ev(eventBase, false, func)
|
|
{
|
|
struct timeval tv;
|
|
tv.tv_sec = millis/1000;
|
|
tv.tv_usec = (millis%1000)*1000;
|
|
ev.trigger(&tv);
|
|
}
|
|
private:
|
|
HTTPEvent ev;
|
|
};
|
|
|
|
class HTTPRPCTimerInterface : public RPCTimerInterface
|
|
{
|
|
public:
|
|
explicit HTTPRPCTimerInterface(struct event_base* _base) : base(_base)
|
|
{
|
|
}
|
|
const char* Name() override
|
|
{
|
|
return "HTTP";
|
|
}
|
|
RPCTimerBase* NewTimer(std::function<void()>& func, int64_t millis) override
|
|
{
|
|
return new HTTPRPCTimer(base, func, millis);
|
|
}
|
|
private:
|
|
struct event_base* base;
|
|
};
|
|
|
|
|
|
/* Pre-base64-encoded authentication token */
|
|
static std::string strRPCUserColonPass;
|
|
/* Stored RPC timer interface (for unregistration) */
|
|
static std::unique_ptr<HTTPRPCTimerInterface> httpRPCTimerInterface;
|
|
|
|
static void JSONErrorReply(HTTPRequest* req, const UniValue& objError, const UniValue& id)
|
|
{
|
|
// Send error reply from json-rpc error object
|
|
int nStatus = HTTP_INTERNAL_SERVER_ERROR;
|
|
int code = find_value(objError, "code").get_int();
|
|
|
|
if (code == RPC_INVALID_REQUEST)
|
|
nStatus = HTTP_BAD_REQUEST;
|
|
else if (code == RPC_METHOD_NOT_FOUND)
|
|
nStatus = HTTP_NOT_FOUND;
|
|
|
|
std::string strReply = JSONRPCReply(NullUniValue, objError, id);
|
|
|
|
req->WriteHeader("Content-Type", "application/json");
|
|
req->WriteReply(nStatus, strReply);
|
|
}
|
|
|
|
//This function checks username and password against -rpcauth
|
|
//entries from config file.
|
|
static bool multiUserAuthorized(std::string strUserPass)
|
|
{
|
|
if (strUserPass.find(':') == std::string::npos) {
|
|
return false;
|
|
}
|
|
std::string strUser = strUserPass.substr(0, strUserPass.find(':'));
|
|
std::string strPass = strUserPass.substr(strUserPass.find(':') + 1);
|
|
|
|
for (const std::string& strRPCAuth : gArgs.GetArgs("-rpcauth")) {
|
|
//Search for multi-user login/pass "rpcauth" from config
|
|
std::vector<std::string> vFields;
|
|
boost::split(vFields, strRPCAuth, boost::is_any_of(":$"));
|
|
if (vFields.size() != 3) {
|
|
//Incorrect formatting in config file
|
|
continue;
|
|
}
|
|
|
|
std::string strName = vFields[0];
|
|
if (!TimingResistantEqual(strName, strUser)) {
|
|
continue;
|
|
}
|
|
|
|
std::string strSalt = vFields[1];
|
|
std::string strHash = vFields[2];
|
|
|
|
static const unsigned int KEY_SIZE = 32;
|
|
unsigned char out[KEY_SIZE];
|
|
|
|
CHMAC_SHA256(reinterpret_cast<const unsigned char*>(strSalt.c_str()), strSalt.size()).Write(reinterpret_cast<const unsigned char*>(strPass.c_str()), strPass.size()).Finalize(out);
|
|
std::vector<unsigned char> hexvec(out, out+KEY_SIZE);
|
|
std::string strHashFromPass = HexStr(hexvec);
|
|
|
|
if (TimingResistantEqual(strHashFromPass, strHash)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static bool RPCAuthorized(const std::string& strAuth, std::string& strAuthUsernameOut)
|
|
{
|
|
if (strRPCUserColonPass.empty()) // Belt-and-suspenders measure if InitRPCAuthentication was not called
|
|
return false;
|
|
if (strAuth.substr(0, 6) != "Basic ")
|
|
return false;
|
|
std::string strUserPass64 = strAuth.substr(6);
|
|
boost::trim(strUserPass64);
|
|
std::string strUserPass = DecodeBase64(strUserPass64);
|
|
|
|
if (strUserPass.find(':') != std::string::npos)
|
|
strAuthUsernameOut = strUserPass.substr(0, strUserPass.find(':'));
|
|
|
|
//Check if authorized under single-user field
|
|
if (TimingResistantEqual(strUserPass, strRPCUserColonPass)) {
|
|
return true;
|
|
}
|
|
return multiUserAuthorized(strUserPass);
|
|
}
|
|
|
|
static bool HTTPReq_JSONRPC(HTTPRequest* req, const std::string &)
|
|
{
|
|
// JSONRPC handles only POST
|
|
if (req->GetRequestMethod() != HTTPRequest::POST) {
|
|
req->WriteReply(HTTP_BAD_METHOD, "JSONRPC server handles only POST requests");
|
|
return false;
|
|
}
|
|
// Check authorization
|
|
std::pair<bool, std::string> authHeader = req->GetHeader("authorization");
|
|
if (!authHeader.first) {
|
|
req->WriteHeader("WWW-Authenticate", WWW_AUTH_HEADER_DATA);
|
|
req->WriteReply(HTTP_UNAUTHORIZED);
|
|
return false;
|
|
}
|
|
|
|
JSONRPCRequest jreq;
|
|
jreq.peerAddr = req->GetPeer().ToString();
|
|
if (!RPCAuthorized(authHeader.second, jreq.authUser)) {
|
|
LogPrintf("ThreadRPCServer incorrect password attempt from %s\n", jreq.peerAddr);
|
|
|
|
/* Deter brute-forcing
|
|
If this results in a DoS the user really
|
|
shouldn't have their RPC port exposed. */
|
|
MilliSleep(250);
|
|
|
|
req->WriteHeader("WWW-Authenticate", WWW_AUTH_HEADER_DATA);
|
|
req->WriteReply(HTTP_UNAUTHORIZED);
|
|
return false;
|
|
}
|
|
|
|
try {
|
|
// Parse request
|
|
UniValue valRequest;
|
|
if (!valRequest.read(req->ReadBody()))
|
|
throw JSONRPCError(RPC_PARSE_ERROR, "Parse error");
|
|
|
|
// Set the URI
|
|
jreq.URI = req->GetURI();
|
|
|
|
std::string strReply;
|
|
// singleton request
|
|
if (valRequest.isObject()) {
|
|
jreq.parse(valRequest);
|
|
|
|
UniValue result = tableRPC.execute(jreq);
|
|
|
|
// Send reply
|
|
strReply = JSONRPCReply(result, NullUniValue, jreq.id);
|
|
|
|
// array of requests
|
|
} else if (valRequest.isArray())
|
|
strReply = JSONRPCExecBatch(jreq, valRequest.get_array());
|
|
else
|
|
throw JSONRPCError(RPC_PARSE_ERROR, "Top-level object parse error");
|
|
|
|
req->WriteHeader("Content-Type", "application/json");
|
|
req->WriteReply(HTTP_OK, strReply);
|
|
} catch (const UniValue& objError) {
|
|
JSONErrorReply(req, objError, jreq.id);
|
|
return false;
|
|
} catch (const std::exception& e) {
|
|
JSONErrorReply(req, JSONRPCError(RPC_PARSE_ERROR, e.what()), jreq.id);
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static bool InitRPCAuthentication()
|
|
{
|
|
if (gArgs.GetArg("-rpcpassword", "") == "")
|
|
{
|
|
LogPrintf("No rpcpassword set - using random cookie authentication.\n");
|
|
if (!GenerateAuthCookie(&strRPCUserColonPass)) {
|
|
uiInterface.ThreadSafeMessageBox(
|
|
_("Error: A fatal internal error occurred, see debug.log for details"), // Same message as AbortNode
|
|
"", CClientUIInterface::MSG_ERROR);
|
|
return false;
|
|
}
|
|
} else {
|
|
LogPrintf("Config options rpcuser and rpcpassword will soon be deprecated. Locally-run instances may remove rpcuser to use cookie-based auth, or may be replaced with rpcauth. Please see share/rpcauth for rpcauth auth generation.\n");
|
|
strRPCUserColonPass = gArgs.GetArg("-rpcuser", "") + ":" + gArgs.GetArg("-rpcpassword", "");
|
|
}
|
|
if (gArgs.GetArg("-rpcauth","") != "")
|
|
{
|
|
LogPrintf("Using rpcauth authentication.\n");
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool StartHTTPRPC()
|
|
{
|
|
LogPrint(BCLog::RPC, "Starting HTTP RPC server\n");
|
|
if (!InitRPCAuthentication())
|
|
return false;
|
|
|
|
RegisterHTTPHandler("/", true, HTTPReq_JSONRPC);
|
|
if (g_wallet_init_interface.HasWalletSupport()) {
|
|
RegisterHTTPHandler("/wallet/", false, HTTPReq_JSONRPC);
|
|
}
|
|
struct event_base* eventBase = EventBase();
|
|
assert(eventBase);
|
|
httpRPCTimerInterface = MakeUnique<HTTPRPCTimerInterface>(eventBase);
|
|
RPCSetTimerInterface(httpRPCTimerInterface.get());
|
|
return true;
|
|
}
|
|
|
|
void InterruptHTTPRPC()
|
|
{
|
|
LogPrint(BCLog::RPC, "Interrupting HTTP RPC server\n");
|
|
}
|
|
|
|
void StopHTTPRPC()
|
|
{
|
|
LogPrint(BCLog::RPC, "Stopping HTTP RPC server\n");
|
|
UnregisterHTTPHandler("/", true);
|
|
if (g_wallet_init_interface.HasWalletSupport()) {
|
|
UnregisterHTTPHandler("/wallet/", false);
|
|
}
|
|
if (httpRPCTimerInterface) {
|
|
RPCUnsetTimerInterface(httpRPCTimerInterface.get());
|
|
httpRPCTimerInterface.reset();
|
|
}
|
|
}
|