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crosschainrpc.cpp
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crosschainrpc.cpp
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/********************************************************************
* (C) 2019 Michael Toutonghi
*
* Distributed under the MIT software license, see the accompanying
* file COPYING or http://www.opensource.org/licenses/mit-license.php.
*
* This provides support for PBaaS cross chain communication.
*
* In merge mining and notarization, Verus acts as a hub that other PBaaS chains
* call via RPC in order to get information that allows earning and submitting
* notarizations.
*
* All PBaaS chains communicate with their primary reserve chain, which is either Verus
* or the chain that is their reserve coin. The child PBaaS chain initiates all of
* the communication with the parent / reserve daemon.
*
* Generally, the PBaaS chain will call the Verus chain to either get information needed
* to create an earned or accepted notarization. If there is no Verus daemon available
* staking and mining of a PBaaS chain proceeds as usual, but without notarization
* reward opportunities.
*
*/
#include "chainparamsbase.h"
#include "clientversion.h"
#include "rpc/client.h"
#include "rpc/protocol.h"
#include "util.h"
#include "utilstrencodings.h"
#include <boost/filesystem/operations.hpp>
#include <boost/format.hpp>
#include <stdio.h>
#include <event2/buffer.h>
#include <event2/keyvalq_struct.h>
#include "support/events.h"
#include <univalue.h>
#include "uint256.h"
#include "hash.h"
#include "pbaas/crosschainrpc.h"
#include "pbaas/identity.h"
#include "sync.h"
using namespace std;
extern string PBAAS_HOST;
extern string PBAAS_USERPASS;
extern int32_t PBAAS_PORT;
extern std::string VERUS_CHAINNAME;
uint32_t PBAAS_MAINDEFI3_HEIGHT = 2553500;
uint32_t PBAAS_CLEARCONVERT_HEIGHT = 2588590;
uint32_t PBAAS_LASTKNOWNCLEARORACLE_HEIGHT = 2597525;
uint32_t PBAAS_ENFORCE_CORRECT_EVIDENCE_TIME = 1684359650;
uint32_t PBAAS_OPTIMIZE_ETH_HEIGHT = 2805000;
//
// Exception thrown on connection error. This error is used to determine
// when to wait if -rpcwait is given.
//
class CConnectionFailed : public std::runtime_error
{
public:
explicit inline CConnectionFailed(const std::string& msg) :
std::runtime_error(msg)
{}
};
/** Reply structure for request_done to fill in */
struct HTTPReply
{
HTTPReply(): status(0), error(-1) {}
int status;
int error;
std::string body;
};
const char *http_errorstring(int code)
{
switch(code) {
#if LIBEVENT_VERSION_NUMBER >= 0x02010300
case EVREQ_HTTP_TIMEOUT:
return "timeout reached";
case EVREQ_HTTP_EOF:
return "EOF reached";
case EVREQ_HTTP_INVALID_HEADER:
return "error while reading header, or invalid header";
case EVREQ_HTTP_BUFFER_ERROR:
return "error encountered while reading or writing";
case EVREQ_HTTP_REQUEST_CANCEL:
return "request was canceled";
case EVREQ_HTTP_DATA_TOO_LONG:
return "response body is larger than allowed";
#endif
default:
return "unknown";
}
}
static void http_request_done(struct evhttp_request *req, void *ctx)
{
HTTPReply *reply = static_cast<HTTPReply*>(ctx);
if (req == NULL) {
/* If req is NULL, it means an error occurred while connecting: the
* error code will have been passed to http_error_cb.
*/
reply->status = 0;
return;
}
reply->status = evhttp_request_get_response_code(req);
struct evbuffer *buf = evhttp_request_get_input_buffer(req);
if (buf)
{
size_t size = evbuffer_get_length(buf);
const char *data = (const char*)evbuffer_pullup(buf, size);
if (data)
reply->body = std::string(data, size);
evbuffer_drain(buf, size);
}
}
#if LIBEVENT_VERSION_NUMBER >= 0x02010300
static void http_error_cb(enum evhttp_request_error err, void *ctx)
{
HTTPReply *reply = static_cast<HTTPReply*>(ctx);
reply->error = err;
}
#endif
static CCrossChainRPCData LoadFromConfig(std::string name)
{
map<string, string> settings;
map<string, vector<string>> settingsmulti;
CCrossChainRPCData ret;
// if we are requested to automatically load the information from the Verus chain, do it if we can find the daemon
if (ReadConfigFile(name, settings, settingsmulti))
{
auto rpcuser = settings.find("-rpcuser");
auto rpcpwd = settings.find("-rpcpassword");
auto rpcport = settings.find("-rpcport");
auto rpchost = settings.find("-rpchost");
ret.credentials = rpcuser != settings.end() ? rpcuser->second + ":" : "";
ret.credentials += rpcpwd != settings.end() ? rpcpwd->second : "";
ret.port = rpcport != settings.end() ? atoi(rpcport->second) : (name == "VRSC" ? 27486 : 0);
ret.host = rpchost != settings.end() ? rpchost->second : "127.0.0.1";
}
return ret;
}
// credentials for now are "user:password"
UniValue RPCCall(const string& strMethod, const UniValue& params, const string credentials, int port, const string host, int timeout)
{
// Used for inter-daemon communicatoin to enable merge mining and notarization without a client
//
// 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(), 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
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(credentials)).c_str());
// Attach request data
std::string strRequest = JSONRPCRequest(strMethod, params, 1);
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;
}
UniValue RPCCallRoot(const string& strMethod, const UniValue& params, int timeout)
{
string host, credentials;
int port;
map<string, string> settings;
map<string, vector<string>> settingsmulti;
if (PBAAS_HOST != "" && PBAAS_PORT != 0)
{
return RPCCall(strMethod, params, PBAAS_USERPASS, PBAAS_PORT, PBAAS_HOST);
}
else if ((_IsVerusActive() &&
ReadConfigFile("veth", settings, settingsmulti)) ||
(!_IsVerusActive() &&
ReadConfigFile(PBAAS_TESTMODE ? "vrsctest" : "VRSC", settings, settingsmulti)))
{
// the Ethereum bridge, "VETH", serves as the root currency to VRSC and for Rinkeby to VRSCTEST
auto userIt = settingsmulti.find("-rpcuser");
auto passIt = settingsmulti.find("-rpcpassword");
auto portIt = settingsmulti.find("-rpcport");
auto hostIt = settingsmulti.find("-rpchost");
if (userIt != settingsmulti.end() &&
passIt != settingsmulti.end() &&
portIt != settingsmulti.end())
{
PBAAS_USERPASS = userIt->second[0] + ":" + passIt->second[0];
PBAAS_PORT = atoi(portIt->second[0]);
PBAAS_HOST = hostIt != settingsmulti.end() ? hostIt->second[0] : "127.0.0.1";
if (!PBAAS_HOST.size())
{
PBAAS_HOST = "127.0.0.1";
}
return RPCCall(strMethod, params, credentials, port, host, timeout);
}
}
return UniValue(UniValue::VNULL);
}
UniValue CCrossChainRPCData::ToUniValue() const
{
UniValue obj(UniValue::VOBJ);
obj.push_back(Pair("host", host));
obj.push_back(Pair("port", port));
obj.push_back(Pair("credentials", credentials));
return obj;
}
CNodeData::CNodeData(const UniValue &obj)
{
networkAddress = uni_get_str(find_value(obj, "networkaddress"));
CTxDestination dest = DecodeDestination(uni_get_str(find_value(obj, "nodeidentity")));
if (dest.which() != COptCCParams::ADDRTYPE_ID)
{
nodeIdentity = uint160();
}
else
{
nodeIdentity = GetDestinationID(dest);
}
}
CNodeData::CNodeData(std::string netAddr, std::string paymentAddr) :
networkAddress(netAddr)
{
nodeIdentity = GetDestinationID(DecodeDestination(paymentAddr));
}
const std::map<std::string, CCurrencyDefinition::EHashTypes> &CIdentitySignature::HashTypeStringMap()
{
static std::map<std::string, CCurrencyDefinition::EHashTypes> hashTypeMap;
if (!hashTypeMap.size())
{
hashTypeMap["sha256"] = CCurrencyDefinition::EHashTypes::HASH_SHA256;
hashTypeMap["blake2b"] = CCurrencyDefinition::EHashTypes::HASH_BLAKE2BMMR;
hashTypeMap["keccak256"] = CCurrencyDefinition::EHashTypes::HASH_KECCAK;
hashTypeMap["sha256D"] = CCurrencyDefinition::EHashTypes::HASH_SHA256D;
}
return hashTypeMap;
}
CIdentitySignature::CIdentitySignature(const UniValue &uni)
{
try
{
version = uni_get_int(find_value(uni, "version"));
std::string hashTypeStr = uni_get_str(find_value(uni, "hashtype"));
auto it = HashTypeStringMap().find(hashTypeStr);
if (it != HashTypeStringMap().end())
{
hashType = it->second;
}
else
{
hashType = uni_get_int(find_value(uni, "hashtype"), CCurrencyDefinition::EHashTypes::HASH_INVALID);
if (!IsValidHashType((CCurrencyDefinition::EHashTypes)hashType))
{
version = VERSION_INVALID;
return;
}
}
blockHeight = uni_get_int64(find_value(uni, "blockheight"));
UniValue sigs = find_value(uni, "signatures");
if (sigs.isArray() && sigs.size())
{
for (int i = 0; i < sigs.size(); i++)
{
signatures.insert(ParseHex(uni_get_str(sigs[i])));
}
}
}
catch(...)
{
version = VERSION_INVALID;
}
}
uint256 CIdentitySignature::IdentitySignatureHash(const std::vector<uint160> &vdxfCodes,
const std::vector<std::string> &vdxfCodeNames,
const std::vector<uint256> &statements,
const uint160 &systemID,
uint32_t blockHeight,
const uint160 &idID,
const std::string &prefixString,
const uint256 &msgHash) const
{
uint256 retVal;
if (version == VERSION_VERUSID)
{
CHashWriterSHA256 ss(SER_GETHASH, PROTOCOL_VERSION);
ss << prefixString;
ss << systemID;
ss << blockHeight;
ss << idID;
ss << msgHash;
retVal = ss.GetHash();
}
else
{
CNativeHashWriter ss((CCurrencyDefinition::EHashTypes)hashType);
bool crossChainLogging = LogAcceptCategory("notarysignatures") || LogAcceptCategory("identitysignatures");
if (crossChainLogging)
{
printf("systemid: %s, blockheight: %u, identity: %s, prefix: %s\nmsghash: %s\n",
EncodeDestination(CIdentityID(systemID)).c_str(),
blockHeight,
EncodeDestination(CIdentityID(idID)).c_str(),
prefixString.c_str(),
msgHash.GetHex().c_str());
LogPrintf("systemid: %s, blockheight: %u, identity: %s, prefix: %s\nmsghash: %s\n",
EncodeDestination(CIdentityID(systemID)).c_str(),
blockHeight,
EncodeDestination(CIdentityID(idID)).c_str(),
prefixString.c_str(),
msgHash.GetHex().c_str());
printf("\n");
LogPrintf("\n");
}
if (vdxfCodes.size())
{
auto vecCopy = vdxfCodes;
sort(vecCopy.begin(), vecCopy.end());
ss << vecCopy;
}
if (vdxfCodeNames.size())
{
auto vecCopy = vdxfCodeNames;
sort(vecCopy.begin(), vecCopy.end());
ss << vecCopy;
}
if (statements.size())
{
auto vecCopy = statements;
sort(vecCopy.begin(), vecCopy.end());
ss << vecCopy;
}
if (crossChainLogging)
{
if (vdxfCodes.size())
{
printf("%s: vdxfCodes:\n", __func__);
LogPrintf("%s: vdxfCodes:\n", __func__);
for (auto &oneCode : vdxfCodes)
{
printf("%s\n", oneCode.GetHex().c_str());
LogPrintf("%s\n", oneCode.GetHex().c_str());
}
printf("\n");
LogPrintf("\n");
}
if (vdxfCodeNames.size())
{
printf("%s: vdxfCodeNames:\n", __func__);
LogPrintf("%s: vdxfCodeNames:\n", __func__);
for (auto &oneCode : vdxfCodeNames)
{
printf("%s\n", oneCode.c_str());
LogPrintf("%s\n", oneCode.c_str());
}
printf("\n");
LogPrintf("\n");
}
if (statements.size())
{
printf("%s: statements:\n", __func__);
LogPrintf("%s: statements:\n", __func__);
for (auto &oneStatement : statements)
{
printf("%s\n", oneStatement.GetHex().c_str());
LogPrintf("%s\n", oneStatement.GetHex().c_str());
}
printf("\n");
LogPrintf("\n");
}
}
ss << systemID;
ss << blockHeight;
ss << idID;
if (prefixString.size())
{
ss << prefixString;
}
ss << msgHash;
retVal = ss.GetHash();
if (crossChainLogging)
{
printf("%s\n", retVal.GetHex().c_str());
LogPrintf("%s\n", retVal.GetHex().c_str());
}
}
return retVal;
}
CIdentitySignature::ESignatureVerification CIdentitySignature::CheckSignature(const CIdentity &signingID,
const std::vector<uint160> &vdxfCodes,
const std::vector<std::string> &vdxfCodeNames,
const std::vector<uint256> &statements,
const uint160 systemID,
const std::string &prefixString,
const uint256 &msgHash,
std::vector<std::vector<unsigned char>> *pDupSigs) const
{
CPubKey checkKey;
std::set<uint160> keys;
std::set<uint160> idKeys;
for (auto &oneKey : signingID.primaryAddresses)
{
// we currently only support secp256k1 signatures
if (oneKey.which() != COptCCParams::ADDRTYPE_PK && oneKey.which() != COptCCParams::ADDRTYPE_PKH)
{
return SIGNATURE_INVALID;
}
idKeys.insert(GetDestinationID(oneKey));
}
uint256 signatureHash = IdentitySignatureHash(vdxfCodes, vdxfCodeNames, statements, systemID, blockHeight, signingID.GetID(), prefixString, msgHash);
for (auto &oneSig : signatures)
{
if (oneSig.size() != ECDSA_RECOVERABLE_SIZE)
{
return SIGNATURE_INVALID;
}
if (!checkKey.RecoverCompact(signatureHash, oneSig))
{
return SIGNATURE_INVALID;
}
uint160 checkKeyID = checkKey.GetID();
if (!idKeys.count(checkKeyID))
{
if (LogAcceptCategory("notarysignatures"))
{
printf("Invalid signature - recovered %s\nfrom signature %s\nfor hash %s\nexpected: %s\nidentity: %s\n", EncodeDestination(CKeyID(checkKeyID)).c_str(), EncodeBase64(std::string(oneSig.begin(), oneSig.end())).c_str(), signatureHash.GetHex().c_str(), idKeys.begin() == idKeys.end() ? "empty" : EncodeDestination(CKeyID(*idKeys.begin())).c_str(), signingID.ToUniValue().write(1,2).c_str());
LogPrintf("Invalid signature - recovered %s\nfrom signature %s\nfor hash %s\nexpected: %s\nidentity: %s\n", EncodeDestination(CKeyID(checkKeyID)).c_str(), EncodeBase64(std::string(oneSig.begin(), oneSig.end())).c_str(), signatureHash.GetHex().c_str(), idKeys.begin() == idKeys.end() ? "empty" : EncodeDestination(CKeyID(*idKeys.begin())).c_str(), signingID.ToUniValue().write(1,2).c_str());
UniValue vdxfCodesUni(UniValue::VARR);
UniValue vdxfCodeNamesUni(UniValue::VARR);
UniValue statementsUni(UniValue::VARR);
for (auto &oneItem : vdxfCodes)
{
vdxfCodesUni.push_back(EncodeDestination(CIdentityID(oneItem)));
}
for (auto &oneItem : vdxfCodeNames)
{
vdxfCodeNamesUni.push_back(oneItem);
}
for (auto &oneItem : statements)
{
statementsUni.push_back(oneItem.GetHex());
}
printf("Ready to check signature on system: %s\nvdxfCodes: %s\nvdxfCodeNames: %s\nstatements: %s\nblockHeight: %u\nsigningID.name: %s\nprefixString: %s\nmsgHash: %s\n",
EncodeDestination(CIdentityID(systemID)).c_str(),
vdxfCodesUni.write().c_str(),
vdxfCodeNamesUni.write().c_str(),
statementsUni.write().c_str(),
blockHeight,
signingID.name.c_str(),
prefixString.c_str(),
msgHash.GetHex().c_str());
LogPrintf("Ready to check signature on system: %s\nvdxfCodes: %s\nvdxfCodeNames: %s\nstatements: %s\nblockHeight: %u\nsigningID.name: %s\nprefixString: %s\nmsgHash: %s\n",
EncodeDestination(CIdentityID(systemID)).c_str(),
vdxfCodesUni.write().c_str(),
vdxfCodeNamesUni.write().c_str(),
statementsUni.write().c_str(),
blockHeight,
signingID.name.c_str(),
prefixString.c_str(),
msgHash.GetHex().c_str());
}
return SIGNATURE_INVALID;
}
if (pDupSigs && keys.count(checkKeyID))
{
pDupSigs->push_back(oneSig);
}
keys.insert(checkKeyID);
if (LogAcceptCategory("notarysignatures") && LogAcceptCategory("verbose"))
{
printf("Signature OK - recovered %s\nfrom signature %s\nfor hash %s\nexpected: %s\nidentity: %s\n", EncodeDestination(CKeyID(checkKeyID)).c_str(), EncodeBase64(std::string(oneSig.begin(), oneSig.end())).c_str(), signatureHash.GetHex().c_str(), idKeys.begin() == idKeys.end() ? "empty" : EncodeDestination(CKeyID(*idKeys.begin())).c_str(), signingID.ToUniValue().write(1,2).c_str());
LogPrintf("Signature OK - recovered %s\nfrom signature %s\nfor hash %s\nexpected: %s\nidentity: %s\n", EncodeDestination(CKeyID(checkKeyID)).c_str(), EncodeBase64(std::string(oneSig.begin(), oneSig.end())).c_str(), signatureHash.GetHex().c_str(), idKeys.begin() == idKeys.end() ? "empty" : EncodeDestination(CKeyID(*idKeys.begin())).c_str(), signingID.ToUniValue().write(1,2).c_str());
}
}
if (keys.size() >= signingID.minSigs)
{
return SIGNATURE_COMPLETE;
}
else if (keys.size())
{
return SIGNATURE_PARTIAL;
}
else
{
return SIGNATURE_EMPTY;
}
}
CTransferDestination CTransferDestination::GetAuxDest(int destNum) const
{
CTransferDestination retVal;
if (destNum >= 0 && destNum < auxDests.size())
{
::FromVector(auxDests[destNum], retVal);
if (retVal.type & FLAG_DEST_AUX || retVal.auxDests.size())
{
retVal.type = DEST_INVALID;
}
// no gateways or flags, only simple destinations work
switch (retVal.type)
{
case DEST_ID:
case DEST_PK:
case DEST_PKH:
case DEST_ETH:
case DEST_SH:
break;
default:
retVal.type = DEST_INVALID;
}
}
return retVal;
}
void CTransferDestination::SetAuxDest(const CTransferDestination &auxDest, int destNum)
{
if (auxDests.size() < destNum)
{
LogPrintf("%s: Invalid auxDest index %d. Cannot add more than one to auxDests at a time.\n", __func__, destNum);
assert(false);
}
if (auxDests.size() == destNum)
{
auxDests.push_back(::AsVector(auxDest));
}
else if (auxDests.size() > destNum)
{
auxDests[destNum] = ::AsVector(auxDest);
}
if (auxDests.size())
{
type |= FLAG_DEST_AUX;
}
}
bool CTransferDestination::EraseAuxDest(int destNum)
{
if (auxDests.size() <= destNum)
{
LogPrint("notarization", "%s: Attempt to erase invalid auxDest index %d\n", __func__, destNum);
return false;
}
auxDests.erase(auxDests.begin() + destNum);
if (!auxDests.size())
{
type &= ~FLAG_DEST_AUX;
}
return true;
}
uint160 DecodeCurrencyName(std::string currencyStr)
{
uint160 retVal;
currencyStr = TrimSpaces(currencyStr, true);
if (!currencyStr.size())
{
return retVal;
}
if (currencyStr.back() == '@')
{
return retVal;
}
std::string copyStr = currencyStr;
uint160 parent;
currencyStr = CleanName(currencyStr, parent, true, currencyStr.back() != '.');
if (!parent.IsNull() && CCurrencyDefinition::GetID(currencyStr, parent) == ASSETCHAINS_CHAINID)
{
return ASSETCHAINS_CHAINID;
}
CTxDestination currencyDest = DecodeDestination(currencyStr);
if (currencyDest.which() == COptCCParams::ADDRTYPE_INVALID)
{
currencyDest = DecodeDestination(copyStr + "@");
}
if (currencyDest.which() != COptCCParams::ADDRTYPE_INVALID)
{
return GetDestinationID(currencyDest);
}
return retVal;
}
CCurrencyDefinition::CCurrencyDefinition(const UniValue &obj) :
initialFractionalSupply(0),
gatewayConverterIssuance(0),
preLaunchDiscount(0),
preLaunchCarveOut(0),
minNotariesConfirm(0),
idRegistrationFees(IDENTITY_REGISTRATION_FEE),
idReferralLevels(DEFAULT_ID_REFERRAL_LEVELS),
idImportFees(IDENTITY_IMPORT_FEE),
currencyRegistrationFee(CURRENCY_REGISTRATION_FEE),
pbaasSystemLaunchFee(PBAAS_SYSTEM_LAUNCH_FEE),
currencyImportFee(CURRENCY_IMPORT_FEE),
transactionImportFee(TRANSACTION_CROSSCHAIN_FEE >> 1),
transactionExportFee(TRANSACTION_CROSSCHAIN_FEE >> 1),
initialBits(DEFAULT_START_TARGET),
blockTime(DEFAULT_BLOCKTIME_TARGET),
powAveragingWindow(DEFAULT_AVERAGING_WINDOW),
blockNotarizationModulo(BLOCK_NOTARIZATION_MODULO)
{
try
{
nVersion = uni_get_int64(find_value(obj, "version"), VERSION_CURRENT);
options = (uint32_t)uni_get_int64(find_value(obj, "options"));
name = std::string(uni_get_str(find_value(obj, "name")), 0, (KOMODO_ASSETCHAIN_MAXLEN - 1));
std::string parentStr = uni_get_str(find_value(obj, "parent"));
if (parentStr != "")
{
parent = DecodeCurrencyName(parentStr);
if (parent.IsNull())
{
LogPrintf("%s: invalid parent for currency: %s\n", __func__, parentStr.c_str());
nVersion = PBAAS_VERSION_INVALID;
return;
}
}
name = CleanName(name, parent, true);
std::string systemIDStr = uni_get_str(find_value(obj, "systemid"));
if (systemIDStr != "")
{
systemID = DecodeCurrencyName(systemIDStr);
// if we have a system, but it is invalid, the json for this definition cannot be valid
if (systemID.IsNull())
{
nVersion = PBAAS_VERSION_INVALID;
return;
}
}
else
{
systemID = parent;
}
gatewayConverterName = uni_get_str(find_value(obj, "gatewayconvertername"));
if (!gatewayConverterName.empty())
{
if (!(IsPBaaSChain() || IsGateway()) || (IsPBaaSChain() && IsGateway()))
{
LogPrintf("%s: a gateway converter currency may only be defined as part of a gateway or PBaaS system definition\n", __func__);
nVersion = PBAAS_VERSION_INVALID;
return;
}
else if (IsGateway())
{
gatewayID = GetID();
}
uint160 converterParent = GetID();
std::string cleanGatewayName = CleanName(gatewayConverterName, converterParent, true);
uint160 converterID = GetID(cleanGatewayName, converterParent);
if (converterParent != GetID())
{
LogPrintf("%s: invalid name for gateway converter %s\n", __func__, cleanGatewayName.c_str());
nVersion = PBAAS_VERSION_INVALID;
return;
}
}
if (IsPBaaSChain() || IsGateway() || IsGatewayConverter())
{
UniValue gatewayIssuanceUni = find_value(obj, "gatewayconverterissuance");
if (!gatewayIssuanceUni.isNull())
{
try
{
gatewayConverterIssuance = AmountFromValue(gatewayIssuanceUni);
}
catch(const std::exception& e)
{
LogPrintf("%s: invalid gatewayconverterissuance %s\n", __func__, gatewayIssuanceUni.write().c_str());
nVersion = PBAAS_VERSION_INVALID;
return;
}
}
if (IsGatewayConverter())
{
std::string gatewayNameID = uni_get_str(find_value(obj, "gateway"));
if (!gatewayNameID.empty())
{
gatewayID = DecodeCurrencyName(gatewayNameID);
if (gatewayID.IsNull() || gatewayID != parent)
{
nVersion = PBAAS_VERSION_INVALID;
return;
}
}
}
else if (IsGateway() && conversions.size())
{
if (maxPreconvert.size() != conversions.size())
{
LogPrintf("%s: gateways must not allow preconversions %s\n", __func__, name.c_str());
nVersion = PBAAS_VERSION_INVALID;
return;
}
for (int j = 0; j < conversions.size(); j++)
{
if (maxPreconvert[j])
{
LogPrintf("%s: gateways must not allow preconversions %s\n", __func__, name.c_str());
nVersion = PBAAS_VERSION_INVALID;
return;
}
}
}
}
notarizationProtocol = (ENotarizationProtocol)uni_get_int(find_value(obj, "notarizationprotocol"), (int32_t)NOTARIZATION_AUTO);
if (notarizationProtocol != NOTARIZATION_AUTO &&
notarizationProtocol != NOTARIZATION_NOTARY_CONFIRM &&
notarizationProtocol != NOTARIZATION_NOTARY_CHAINID)
{
LogPrintf("%s: notarization protocol for PBaaS chains must be %d (NOTARIZATION_AUTO), %d (NOTARIZATION_NOTARY_CONFIRM), or %d (NOTARIZATION_NOTARY_CHAINID)\n", __func__, (int)NOTARIZATION_AUTO, (int)NOTARIZATION_NOTARY_CONFIRM, (int)NOTARIZATION_NOTARY_CHAINID);
nVersion = PBAAS_VERSION_INVALID;
return;
}
proofProtocol = (EProofProtocol)uni_get_int(find_value(obj, "proofprotocol"), (int32_t)PROOF_PBAASMMR);
if (proofProtocol != PROOF_PBAASMMR && proofProtocol != PROOF_CHAINID && proofProtocol != PROOF_ETHNOTARIZATION)
{
LogPrintf("%s: proofprotocol must be %d, %d, or %d\n", __func__, (int)PROOF_PBAASMMR, (int)PROOF_CHAINID, (int)PROOF_ETHNOTARIZATION);
nVersion = PBAAS_VERSION_INVALID;
return;
}
nativeCurrencyID = CTransferDestination(find_value(obj, "nativecurrencyid"));
std::string launchIDStr = uni_get_str(find_value(obj, "launchsystemid"));
if (launchIDStr != "")
{
launchSystemID = DecodeCurrencyName(launchIDStr);
// if we have a system, but it is invalid, the json for this definition cannot be valid
if (launchSystemID.IsNull())
{
nVersion = PBAAS_VERSION_INVALID;
return;
}
}
else
{
launchSystemID = parent;
}
// PROOF_CHAINID not supported on this version of PBaaS, but if we didn't make it,
// don't disallow it being imported from another chain/system
if ((systemID == ASSETCHAINS_CHAINID || launchSystemID == ASSETCHAINS_CHAINID) &&
proofProtocol == PROOF_CHAINID &&
IsPBaaSChain())
{
LogPrintf("%s: proofprotocol %d as a PBaaS chain is not yet implemented in this version of Verus PBaaS\n", __func__, (int)PROOF_CHAINID);
nVersion = PBAAS_VERSION_INVALID;
return;
}
startBlock = (uint32_t)uni_get_int64(find_value(obj, "startblock"));
endBlock = (uint32_t)uni_get_int64(find_value(obj, "endblock"));
int32_t totalReserveWeight = IsFractional() ? SATOSHIDEN : 0;
UniValue currencyArr = find_value(obj, "currencies");
UniValue weightArr = find_value(obj, "weights");
UniValue conversionArr = find_value(obj, "conversions");
UniValue minPreconvertArr = find_value(obj, "minpreconversion");
UniValue maxPreconvertArr = find_value(obj, "maxpreconversion");
UniValue initialContributionArr = find_value(obj, "initialcontributions");
if ((options & (OPTION_FRACTIONAL | OPTION_GATEWAY | OPTION_PBAAS | OPTION_TOKEN)) == OPTION_TOKEN &&
!(currencyArr.isArray() && currencyArr.size()) &&
maxPreconvertArr.isArray() &&
maxPreconvertArr.size() == 1 &&
!uni_get_int(maxPreconvertArr[0]))
{
currencyArr = UniValue(UniValue::VARR);
currencyArr.push_back(EncodeDestination(CIdentityID(ASSETCHAINS_CHAINID)));
}
if (currencyArr.isArray() && currencyArr.size())
{
contributions = preconverted = std::vector<int64_t>(currencyArr.size());
if (initialContributionArr.isNull())
{
initialContributionArr = UniValue(UniValue::VARR);
for (int i = 0; i < currencyArr.size(); i++)
{
initialContributionArr.push_back((CAmount)0);
}
}
if (IsFractional())
{
preLaunchDiscount = AmountFromValueNoErr(find_value(obj, "prelaunchdiscount"));
UniValue initSupplyUni = find_value(obj, "initialsupply");
if (!initSupplyUni.isNull())
{
try
{
initialFractionalSupply = AmountFromValue(initSupplyUni);
}
catch(const std::exception& e)
{
LogPrintf("%s: invalid initialsupply %s\n", __func__, initSupplyUni.write().c_str());
nVersion = PBAAS_VERSION_INVALID;
return;
}
}
if (!initialFractionalSupply)
{
LogPrintf("%s: cannot specify zero initial supply for fractional currency\n", __func__);
printf("%s: cannot specify zero initial supply for fractional currency\n", __func__);
nVersion = PBAAS_VERSION_INVALID;
}
preLaunchCarveOut = AmountFromValueNoErr(find_value(obj, "prelaunchcarveout"));
// if weights are defined, use them as relative ratios of each member currency
if (weightArr.isArray() && weightArr.size())
{
if (weightArr.size() != currencyArr.size())
{
LogPrintf("%s: reserve currency weights must be specified for all currencies\n", __func__);
nVersion = PBAAS_VERSION_INVALID;
}
else
{
CAmount total = 0;
for (int i = 0; i < currencyArr.size(); i++)
{
int32_t weight = (int32_t)AmountFromValueNoErr(weightArr[i]);
if (weight <= 0)
{
nVersion = PBAAS_VERSION_INVALID;
total = 0;
break;
}
total += weight;
weights.push_back(weight);
}
if (nVersion != PBAAS_VERSION_INVALID)
{
// calculate each weight as a relative part of the total
// reserve weight
int64_t totalRelativeWeight = 0;
for (auto &onew : weights)
{
totalRelativeWeight += onew;
}
int weightIdx;
arith_uint256 bigReserveWeight(totalReserveWeight);
int32_t reserveLeft = totalReserveWeight;
for (weightIdx = 0; weightIdx < weights.size(); weightIdx++)
{
CAmount amount = (bigReserveWeight * arith_uint256(weights[weightIdx]) / arith_uint256(totalRelativeWeight)).GetLow64();
if (reserveLeft <= amount || (weightIdx + 1) == weights.size())
{
amount = reserveLeft;
}
reserveLeft -= amount;
weights[weightIdx] = amount;
}
}
}
}
else if (totalReserveWeight)
{
uint32_t oneWeight = totalReserveWeight / currencyArr.size();
uint32_t mod = totalReserveWeight % currencyArr.size();
for (int i = 0; i < currencyArr.size(); i++)
{
// distribute remainder of weight among first come currencies
int32_t weight = oneWeight;
if (mod > 0)
{
weight++;
mod--;
}
weights.push_back(weight);
}
}
}
// if we have weights, we can be a fractional currency
if (weights.size())
{
// if we are fractional, explicit conversion values are not valid
// and are based on non-zero, initial contributions relative to supply
if ((conversionArr.isArray() && conversionArr.size() != currencyArr.size()) ||
!initialContributionArr.isArray() ||
initialContributionArr.size() != currencyArr.size() ||
weights.size() != currencyArr.size() ||
!IsFractional())
{
LogPrintf("%s: fractional currencies must have weights, initial contributions in at least one currency\n", __func__);
nVersion = PBAAS_VERSION_INVALID;
}
}
else
{
// if we are not a reserve currency, we either have a conversion vector, or we are not convertible at all
if (IsFractional())
{
LogPrintf("%s: reserve currencies must define currency weight\n", __func__);
nVersion = PBAAS_VERSION_INVALID;
}
else if (conversionArr.isArray() && conversionArr.size() && conversionArr.size() != currencyArr.size())
{
LogPrintf("%s: non-reserve currencies must define all conversion rates for supported currencies if they define any\n", __func__);
nVersion = PBAAS_VERSION_INVALID;
}
else if (initialContributionArr.isArray() && initialContributionArr.size() != currencyArr.size())
{
LogPrintf("%s: initial contributions for currencies must all be specified if any are specified\n", __func__);
nVersion = PBAAS_VERSION_INVALID;
}
}