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multiple authorities

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This commit is contained in:
Scott Sadler
2018-09-05 00:19:12 -03:00
parent cbb1422656
commit 538de2ee49
6 changed files with 113 additions and 58 deletions
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1
src/Makefile.am
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@@ -272,6 +272,7 @@ libbitcoin_server_a_SOURCES = \
chain.cpp \
checkpoints.cpp \
crosschain.cpp \
crosschain_authority.cpp \
deprecation.cpp \
httprpc.cpp \
httpserver.cpp \

36
src/cc/eval.cpp
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@@ -140,45 +140,17 @@ int32_t Eval::GetNotaries(uint8_t pubkeys[64][33], int32_t height, uint32_t time
return komodo_notaries(pubkeys, height, timestamp);
}
bool Eval::CheckNotaryInputs(const CTransaction &tx, uint32_t height, uint32_t timestamp) const
{
if (tx.vin.size() < 11) return false;
uint8_t seenNotaries[64] = {0};
uint8_t notaries[64][33];
int nNotaries = GetNotaries(notaries, height, timestamp);
CrosschainAuthority auth;
auth.requiredSigs = 11;
auth.size = GetNotaries(auth.notaries, height, timestamp);
BOOST_FOREACH(const CTxIn &txIn, tx.vin)
{
// Get notary pubkey
CTransaction tx;
uint256 hashBlock;
if (!GetTxUnconfirmed(txIn.prevout.hash, tx, hashBlock)) return false;
if (tx.vout.size() < txIn.prevout.n) return false;
CScript spk = tx.vout[txIn.prevout.n].scriptPubKey;
if (spk.size() != 35) return false;
const unsigned char *pk = spk.data();
if (pk++[0] != 33) return false;
if (pk[33] != OP_CHECKSIG) return false;
// Check it's a notary
for (int i=0; i<nNotaries; i++) {
if (!seenNotaries[i]) {
if (memcmp(pk, notaries[i], 33) == 0) {
seenNotaries[i] = 1;
goto found;
}
}
}
return false;
found:;
}
return true;
return CheckTxAuthority(tx, auth);
}
/*
* Get MoM from a notarisation tx hash (on KMD)
*/

4
src/crosschain.cpp
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@@ -50,7 +50,7 @@ uint256 CalculateProofRoot(const char* symbol, uint32_t targetCCid, int kmdHeigh
int seenOwnNotarisations = 0;
bool txscl = IsTXSCL(symbol);
int authority = GetSymbolAuthority(symbol);
for (int i=0; i<NOTARISATION_SCAN_LIMIT_BLOCKS; i++) {
if (i > kmdHeight) break;
@@ -74,7 +74,7 @@ uint256 CalculateProofRoot(const char* symbol, uint32_t targetCCid, int kmdHeigh
if (seenOwnNotarisations == 1) {
BOOST_FOREACH(Notarisation& nota, notarisations) {
if (IsTXSCL(nota.second.symbol) == txscl)
if (GetSymbolAuthority(nota.second.symbol) == authority)
if (nota.second.ccId == targetCCid)
moms.push_back(nota.second.MoM);
}

14
src/crosschain.h
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@@ -3,6 +3,20 @@
#include "cc/eval.h"
const int CROSSCHAIN_KOMODO = 1;
const int CROSSCHAIN_TXSCL = 2;
const int CROSSCHAIN_STAKED = 3;
typedef struct CrosschainAuthority {
uint8_t notaries[64][33];
size_t size;
size_t requiredSigs;
} CrosschainAuthority;
extern const CrosschainAuthority auth_STAKED;
int GetSymbolAuthority(const char* symbol);
bool CheckTxAuthority(const CTransaction &tx, CrosschainAuthority auth);
/* On assetchain */
TxProof GetAssetchainProof(uint256 hash);

72
src/crosschain_authority.cpp Normal file
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@@ -0,0 +1,72 @@
#include "cc/eval.h"
#include "crosschain.h"
#include "notarisationdb.h"
int GetSymbolAuthority(const char* symbol)
{
if (strlen(symbol) >= 5 && strncmp(symbol, "TXSCL", 5) == 0)
return CROSSCHAIN_TXSCL;
if (strlen(symbol) >= 6 && strncmp(symbol, "STAKED", 6) == 0)
return CROSSCHAIN_STAKED;
return CROSSCHAIN_KOMODO;
}
bool CheckTxAuthority(const CTransaction &tx, CrosschainAuthority auth)
{
EvalRef eval;
if (tx.vin.size() < auth.requiredSigs) return false;
uint8_t seesize[64];
BOOST_FOREACH(const CTxIn &txIn, tx.vin)
{
// Get notary pubkey
CTransaction tx;
uint256 hashBlock;
if (!eval->GetTxUnconfirmed(txIn.prevout.hash, tx, hashBlock)) return false;
if (tx.vout.size() < txIn.prevout.n) return false;
CScript spk = tx.vout[txIn.prevout.n].scriptPubKey;
if (spk.size() != 35) return false;
const unsigned char *pk = spk.data();
if (pk++[0] != 33) return false;
if (pk[33] != OP_CHECKSIG) return false;
// Check it's a notary
for (int i=0; i<auth.size; i++) {
if (!seesize[i]) {
if (memcmp(pk, auth.notaries[i], 33) == 0) {
seesize[i] = 1;
goto found;
}
}
}
return false;
found:;
}
return true;
}
const char *notaries_STAKED[4][2] =
{
{"alright", "03b4f49a1c22087e0a9dfaa87aef98ef496c544f9f86038f6c9fea4550543a7679"},
{"alright", "03b4f49a1c22087e0a9dfaa87aef98ef496c544f9f86038f6c9fea4550543a7679"},
{"alright", "03b4f49a1c22087e0a9dfaa87aef98ef496c544f9f86038f6c9fea4550543a7679"},
{"alright", "03b4f49a1c22087e0a9dfaa87aef98ef496c544f9f86038f6c9fea4550543a7679"}
};
const CrosschainAuthority auth_STAKED = [&](){
CrosschainAuthority auth;
auth.size = 4;
auth.requiredSigs = 2;
for (int n=0; n<auth.size; n++)
for (size_t i=0; i<33; i++)
sscanf(notaries_STAKED[n][1]+(i*2), "%2hhx", auth.notaries[n]+i);
return auth;
}();

44
src/notarisationdb.cpp
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@@ -2,6 +2,7 @@
#include "notarisationdb.h"
#include "uint256.h"
#include "cc/eval.h"
#include "crosschain.h"
#include "main.h"
#include <boost/foreach.hpp>
@@ -21,36 +22,31 @@ NotarisationsInBlock ScanBlockNotarisations(const CBlock &block, int nHeight)
for (unsigned int i = 0; i < block.vtx.size(); i++) {
CTransaction tx = block.vtx[i];
// Special case for TXSCL. Should prob be removed at some point.
bool isTxscl = 0;
{
NotarisationData data;
if (ParseNotarisationOpReturn(tx, data))
if (IsTXSCL(data.symbol))
isTxscl = 1;
NotarisationData data;
bool parsed = ParseNotarisationOpReturn(tx, data);
if (!parsed) data = NotarisationData();
int authority = GetSymbolAuthority(data.symbol);
if (authority == CROSSCHAIN_KOMODO) {
if (!eval->CheckNotaryInputs(tx, nHeight, block.nTime))
continue;
} else if (authority == CROSSCHAIN_STAKED) {
if (!CheckTxAuthority(tx, auth_STAKED))
continue;
}
if (isTxscl || eval->CheckNotaryInputs(tx, nHeight, block.nTime)) {
NotarisationData data;
if (ParseNotarisationOpReturn(tx, data)) {
vNotarisations.push_back(std::make_pair(tx.GetHash(), data));
//printf("Parsed a notarisation for: %s, txid:%s, ccid:%i, momdepth:%i\n",
// data.symbol, tx.GetHash().GetHex().data(), data.ccId, data.MoMDepth);
//if (!data.MoMoM.IsNull()) printf("MoMoM:%s\n", data.MoMoM.GetHex().data());
}
else
LogPrintf("WARNING: Couldn't parse notarisation for tx: %s at height %i\n",
tx.GetHash().GetHex().data(), nHeight);
}
if (parsed) {
vNotarisations.push_back(std::make_pair(tx.GetHash(), data));
//printf("Parsed a notarisation for: %s, txid:%s, ccid:%i, momdepth:%i\n",
// data.symbol, tx.GetHash().GetHex().data(), data.ccId, data.MoMDepth);
//if (!data.MoMoM.IsNull()) printf("MoMoM:%s\n", data.MoMoM.GetHex().data());
} else
LogPrintf("WARNING: Couldn't parse notarisation for tx: %s at height %i\n",
tx.GetHash().GetHex().data(), nHeight);
}
return vNotarisations;
}
bool IsTXSCL(const char* symbol)
{
return strlen(symbol) >= 5 && strncmp(symbol, "TXSCL", 5) == 0;
}
bool GetBlockNotarisations(uint256 blockHash, NotarisationsInBlock &nibs)
{