Supported Feathercoin client versions: Current production Version: 0.9.6.1.

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[Dev] Feathercoin 0.9.6.2 * Maintenance fix, build & upgrade issues notes.


  • Moderators

    I am compiling with the standard switches, exactly the same as before, except now qrcodes=no

    ./configure --with-gui=qt5 --enable-tests=no --enable-upnp-default --with-qrcode=no --enable-wallet=yes --enable-shared --disable-hardening LDFLAGS="-L${BDB_PREFIX}/lib/" CPPFLAGS="-I${BDB_PREFIX}/include/" CXXFLAGS="$CXXFLAGS -fPIC -m64 -std=c++11"


  • Moderators

    Then check, if you have a qrcodedialog in the …/qt/forms directory.


  • Moderators

    Fixed.

    I’ve git cloned from head. There is nothing missing and I haven’t done anything to it except add my build.sh and change my compile to qrcodes=no to get it compile…


  • Moderators

    Bitcoin 0.9.x Backports 2

    #68

    https://github.com/bitcoin/bitcoin/commit/0a94661e8db94e84ecbf1ea45a51fb3c7fb77283

    Disable SSLv3 (in favor of TLS) for the RPC client and server.

    TLS is subject to downgrade attacks when SSLv3 is available, and
    SSLv3 has vulnerabilities.

    The popular solution is to disable SSLv3. On the web this breaks
    some tiny number of very old clients. While Bitcoin RPC shouldn’t
    be exposed to the open Internet, it also shouldn’t be exposed to
    really old SSL implementations, so it shouldn’t be a major issue
    for us to disable SSLv3.

    There is more information on the downgrade attacks and disabling
    SSLv3 at https://disablessl3.com/ .

    src/rpcclient.cpp#L43

    -  context.set_options(ssl::context::no_sslv2);
    
    +  context.set_options(ssl::context::no_sslv2 | ssl::context::no_sslv3);
    

    src/rpcserver.cpp

    -    rpc_ssl_context->set_options(ssl::context::no_sslv2);
    
    +    rpc_ssl_context->set_options(ssl::context::no_sslv2 | ssl::context::no_sslv3);

  • Moderators

    Consensus: guard against openssl’s new strict DER checks

     0.9 (#106) 
    

    New versions of OpenSSL will reject non-canonical DER signatures. However,
    it’ll happily decode them. Decode then re-encode before verification in order
    to ensure that it is properly consumed.

    Github-Pull: #5634

    https://github.com/bitcoin/bitcoin/commit/b8e81b7ccd4490155e3345fc73346ff8c3a77524

    -        // -1 = error, 0 = bad sig, 1 = good
    
    -        if (ECDSA_verify(0, (unsigned char*)&hash, sizeof(hash), &vchSig[0], vchSig.size(), pkey) != 1)
    
    -        return true;
    
    +        // New versions of OpenSSL will reject non-canonical DER signatures. de/re-serialize first.
            unsigned char *norm_der = NULL;
    +        ECDSA_SIG *norm_sig = ECDSA_SIG_new();
    +        const unsigned char* sigptr = &vchSig[0];
    +        d2i_ECDSA_SIG(&norm_sig, &sigptr, vchSig.size());
    +        int derlen = i2d_ECDSA_SIG(norm_sig, &norm_der);
    +        ECDSA_SIG_free(norm_sig);
    +        if (derlen <= 0)
    
    
    
    +
    +        // -1 = error, 0 = bad sig, 1 = good
    +        bool ret = ECDSA_verify(0, (unsigned char*)&hash, sizeof(hash), norm_der, derlen, pkey) == 1;
    +        OPENSSL_free(norm_der);
    +        return ret;
    

  • Moderators

    @Bushstar - ufo fails to build on Ubuntu, here is the fix for the issue …

    https://github.com/FeatherCoin/Feathercoin/pull/139/commits/35e34280cf929d086e72e9d3ac6719c8a2fdd559

    chainparams boost version fixes :

    chainparams.cpp ~L73

          //base58Prefixes[PUBKEY_ADDRESS] = list_of(27);
            base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,27); 
              // base58Prefixes[SCRIPT_ADDRESS] = list_of(5);
            base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,5);
            // base58Prefixes[SECRET_KEY] =     list_of(128);
            base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,128);
            // base58Prefixes[EXT_PUBLIC_KEY] = list_of(0x04)(0x88)(0xB2)(0x1E);
            base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x04)(0x88)(0xB2)(0x1E).convert_to_container<std::vector<unsigned char> >();
            // base58Prefixes[EXT_SECRET_KEY] = list_of(0x04)(0x88)(0xAD)(0xE4);
            base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x04)(0x88)(0xAD)(0xE4).convert_to_container<std::vector<unsigned char> >();
    
    

    chainparams.cpp ~153

            // base58Prefixes[PUBKEY_ADDRESS] = list_of(111);
            base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
            // base58Prefixes[SCRIPT_ADDRESS] = list_of(196);
            base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
            // base58Prefixes[SECRET_KEY]     = list_of(239);
            base58Prefixes[SECRET_KEY]     = std::vector<unsigned char>(1,2399);
            // base58Prefixes[EXT_PUBLIC_KEY] = list_of(0x04)(0x35)(0x87)(0xCF);
            base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x04)(0x35)(0x87)(0xCF).convert_to_container<std::vector<unsigned char> >();
            // base58Prefixes[EXT_SECRET_KEY] = list_of(0x04)(0x35)(0x83)(0x94);
            base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x04)(0x35)(0x83)(0x94).convert_to_container<std::vector<unsigned char> >();
    

  • Moderators

    main.cpp Logprintf \n

    Action

    • main.cpp - return LogPrintf CheckBlockHeader() to being error message.

    • Leave others as is.

      LogPrintf("CheckBlockHeader() : block with timestamp before last checkpoint");
      
      LogPrintf("| ");
      LogPrintf("| ");
      LogPrintf("| ");
      
      LogPrintf("%s : Deserialize or I/O error - %s", __func__, e.what());
      

    wallet.cpp

    Actioin Fix all missing \n in LogPrintf() errors

      // if (fDebug) LogPrintf("FindStealthTransactions() tx:%s,", tx.GetHash().GetHex().c_str());
      // if (fDebug) LogPrintf("StealthSecret.....");
      LogPrintf("CommitTransaction() : Error: Transaction not valid");
      LogPrintf("SendMoney() : %s", strError);
    

    rpcserver.cpp

    Action left as original

     //   LogPrintf("%s: Warning: %s when cancelling acceptor", __func__, ec.message());
     //   LogPrintf("%s: Warning: %s when cancelling timer", __func__, ec.message());
    

    rpcdump.cpp

    Action Correct message reference to Bitcoin. Correct / check - Translation text.

     file << strprintf("# Wallet dump created by Bitcoin %s (%s)\n", CLIENT_BUILD, CLIENT_DATE);
    

    multisigdialog.cpp

    Action No action, dev can fix when they uncomment.

     // if (fDebug)printf("updateAddressBalance GetDepthInMainChain %d\n", wtx.GetDepthInMainChain());
    // if (fDebug)printf("updateAddressBalance nValue %s\n", BitcoinUnits::formatWithUnit(model->getOptionsModel()->getDisplayUnit(), txout.nValue).toStdString().c_str());
    // if (fDebug)printf("updateAddressBalance nAmount %s\n", BitcoinUnits::formatWithUnit(model->getOptionsModel()->getDisplayUnit(), nAmount).toStdString().c_str());
    

    miner.cpp

    Action Most left as is, couple reviewed and commented out.

    LogPrintf("COrphan(hash=%s, dPriority=%.1f, dFeePerKb=%.1f)\n", ptx->GetHash().ToString(), dPriority, dFeePerKb);
     LogPrintf("   setDependsOn %s\n", hash.ToString());
        bool fPrintPriority = GetBoolArg("-printpriority", false);
     LogPrintf("ERROR: mempool transaction missing input\n");
            if (fPrintPriority)
                LogPrintf("priority %.1f feeperkb %.1f txid %s\n", dPriority, dFeePerKb, tx.GetHash().ToString());
     LogPrintf("CreateNewBlock(): total size %u\n", nBlockSize);
     //// debug print
     LogPrintf("FeathercoinMiner:\n");
     LogPrintf("proof-of-work found  \n  hash: %s  \ntarget: %s\n", hash.GetHex(), hashTarget.GetHex());
     pblock->print();
     LogPrintf("generated %s\n", FormatMoney(pblock->vtx[0].vout[0].nValue));
     LogPrintf("FeathercoinMiner started\n");
     LogPrintf("Running FeathercoinMiner with %u transactions in block (%u bytes)\n", pblock->vtx.size(),
     LogPrintf("hashmeter %6.0f khash/s\n", dHashesPerSec/1000.0);
     LogPrintf("FeathercoinMiner terminated\n");
    

    util.cpp

    Action No action left as is.

       LogPrintf("%+d  ", n);
       LogPrintf("|  ");

  • Moderators

    main.cpp

    Debug messages remaining.

    2017-09-22 10:00:20   nActualTimespan = 23  before bounds
    2017-09-22 10:00:20 RETARGET: nActualTimespanShort = 61, nActualTimespanMedium = 55, nActualTimespanLong = 65, nActualTimeSpanAvg = 60, nActualTimespan (damped) = 60
    2017-09-22 10:00:20 CheckProofOfWork() hash=000000000c459c4744ba2c6d04f1b3b137d8d4bad5ca8eed9abd5cf95f8a18fc 
    2017-09-22 10:00:20 CheckProofOfWork() nBits=470597168 
    2017-09-22 10:00:20 CheckProofOfWork() bnTarget.getuint256=000000000cbe3000000000000000000000000000000000000000000000000000 
    2017-09-22 10:00:20 CheckProofOfWork() hash=000000000c459c4744ba2c6d04f1b3b137d8d4bad5ca8eed9abd5cf95f8a18fc 
    2017-09-22 10:00:20 CheckProofOfWork() nBits=470597168 
    2017-09-22 10:00:20 CheckProofOfWork() bnTarget.getuint256=000000000cbe3000000000000000000000000000000000000000000000000000 
    2017-09-22 10:00:20 UpdateTip: new best=5e454165c26d7d2115e564511ba041e05da416286607eb95cb724845e3fde581  height=1893653  log2_work=58.112033  tx=3857100  date=2017-09-22 07:31:49 progress=0.999833
    

  • Moderators

    Re : -dumpwallet - https://github.com/FeatherCoin/Feathercoin/issues/236

    rpcdump.cpp

    file << strprintf("# Wallet dump created by Bitcoin %s (%s)\n", CLIENT_BUILD, CLIENT_DATE);
    

    Todo / Test : Compare with @ghostlanders FTC 0.8.4 version?

    https://github.com/FeatherCoin/Feathercoin/commits/master-0.8

    Re: @looarn

    Here what I found today, don’t know if it’s a known issue ?
    https://github.com/FeatherCoin/Feathercoin/issues/236

    Basicly dumpwallet, only dump header, the content of the wallet doesn’t show.


  • Moderators

    Bitcoin 0.9.3 potential backports to FTC 0.9.6.2

    Action: not implemented

    consensus: guard against openssl’s new strict DER checks

    New versions of OpenSSL will reject non-canonical DER signatures. However,
    it’ll happily decode them. Decode then re-encode before verification in order
    to ensure that it is properly consumed.

    Github-Pull: #5634
    Rebased-From: 488ed32

    https://github.com/bitcoin/bitcoin/commit

    https://github.com/bitcoin/bitcoin/commit/60c51f1c381bbd93c70cfdf41c6688609a7956fc

    Action: not implemented

    fail immediately on an empty signature

    Github-Pull: #5634
    Rebased-From: 8dccba6/b8e81b7ccd4490155e3345fc73346ff8c3a77524


  • Moderators

    Bug in FTC 0.9.6.xxx

    https://github.com/FeatherCoin/Feathercoin/issues/239

    Confimed same bug in FTC.

    https://github.com/litecoin-project/litecoin/issues/388

    `static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesisOutputScript, uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
    {
    CMutableTransaction txNew;
    txNew.nVersion = 1;
    txNew.vin.resize(1);
    txNew.vout.resize(1);

    /// In this line where 486604799 ==> 1d00ffff Which is Bitcoin’s nBits value Should not be used
    /// but instead 504365040 this value should have been used. I don’t know if it can cause any problem
    /// that’s what i found and I wanted to share.
    txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << std::vector((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
    txNew.vout[0].nValue = genesisReward;
    txNew.vout[0].scriptPubKey = genesisOutputScript;

    CBlock genesis;
    genesis.nTime = nTime;
    genesis.nBits = nBits;
    genesis.nNonce = nNonce;
    genesis.nVersion = nVersion;
    genesis.vtx.push_back(MakeTransactionRef(std::move(txNew)));
    genesis.hashPrevBlock.SetNull();
    genesis.hashMerkleRoot = BlockMerkleRoot(genesis);
    return genesis;

    }`

    From FTC — 0.9.6.1

    https://github.com/FeatherCoin/Feathercoin/blob/master-0.9/src/chainparams.cpp#L66


  • Moderators

    This looks like a worthwhile update to Zxing, gives improved edge detection for QR codes and more java code converted to C++.

    https://github.com/nu-book/zxing-cpp


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