[Dev] Documenting Feathercoin Specific Software settings - Part 1

[wrapper]

Feathercoin specific changes made to convert Bitcoin to FTC 0.9.6.*

https://github.com/FeatherCoin/Feathercoin/commit/30516a6ce8d723cc3d8eb624e2d30431843f01a0

key.cpp

  +int CompareBigEndian(const unsigned char *c1, size_t c1len, const unsigned char *c2, size_t c2len) {
  +    while (c1len > c2len) {
  +        if (*c1)
  +            return 1;
  +        c1      +      +;
  +        c1len--;
  +    }
  +    while (c2len > c1len) {
  +        if (*c2)
  +            return -1;
  +        c2      +      +;
  +        c2len--;
  +    }
  +    while (c1len > 0) {
  +        if (*c1 > *c2)
  +            return 1;
  +        if (*c2 > *c1)
  +            return -1;
  +        c1      +      +;
  +        c2      +      +;
  +        c1len--;
  +    }
  +    return 0;
  +}
  +
  +// Order of secp256k1's generator minus 1.
  +const unsigned char vchMaxModOrder[32] = {
  +    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  +    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFE,
  +    0xBA,0xAE,0xDC,0xE6,0xAF,0x48,0xA0,0x3B,
  +    0xBF,0xD2,0x5E,0x8C,0xD0,0x36,0x41,0x40
  +};
  +
  +// Half of the order of secp256k1's generator minus 1.
  +const unsigned char vchMaxModHalfOrder[32] = {
  +    0x7F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  +    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  +    0x5D,0x57,0x6E,0x73,0x57,0xA4,0x50,0x1D,
  +    0xDF,0xE9,0x2F,0x46,0x68,0x1B,0x20,0xA0
  +};
  +
  +const unsigned char vchZero[0] = {};
  +

Update to FTC specific settings

 -    // it's easy enough to do directly.
 -    static const unsigned char vchMax[32] = {
  +}
 -        0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
 -        0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFE,
 -        0xBA,0xAE,0xDC,0xE6,0xAF,0x48,0xA0,0x3B,
 -        0xBF,0xD2,0x5E,0x8C,0xD0,0x36,0x41,0x40
  -    };
  -    bool fIsZero = true;
  -    for (int i=0; i<32 && fIsZero; i++)
  -        if (vch[i] != 0)
  -            fIsZero = false;
  -    if (fIsZero)
  -        return false;
  -    for (int i=0; i<32; i++) {
  -        if (vch[i] < vchMax[i])
  -            return true;
  -        if (vch[i] > vchMax[i])
  -            return false;
  -    }
  -    return true;

Bitcoin code replaced

  +    return CompareBigEndian(vch, 32, vchZero, 0) > 0 &&
  +           CompareBigEndian(vch, 32, vchMaxModOrder, 32) <= 0;
  +
  + bool CKey::CheckSignatureElement(const unsigned char *vch, int len, bool half) {
  +    return CompareBigEndian(vch, len, vchZero, 0) > 0 &&
  +           CompareBigEndian(vch, len, half ? vchMaxModHalfOrder : vchMaxModOrder, 32) <= 0;

  +bool ECC_InitSanityCheck() {
  +    EC_KEY *pkey = EC_KEY_new_by_curve_name(NID_secp256k1);
  +    if(pkey == NULL)
  +        return false;
  +    EC_KEY_free(pkey);
  +
  +    // TODO Is there more EC functionality that could be missing?
  +    return true;
  +}

Scrypt interface replacement.

[wrapper]

Feathercoin specific changes made to convert Bitcoin to FTC 0.9.6.*

https://github.com/FeatherCoin/Feathercoin/commit/30516a6ce8d723cc3d8eb624e2d30431843f01a0

key.h

  +    // Check whether an element of a signature (r or s) is valid.
 +    static bool CheckSignatureElement(const unsigned char *vch, int len, bool half);

 +/** Check that required EC support is available at runtime */
 +bool ECC_InitSanityCheck(void);
 +

[wrapper]

Feathercoin specific changes made to convert Bitcoin to FTC 0.9.6.*

https://github.com/FeatherCoin/Feathercoin/commit/30516a6ce8d723cc3d8eb624e2d30431843f01a0

src/qt/addressbookpage.cpp

 +        ui->labelExplanation->setText(tr("These are your Feathercoin addresses for sending payments. Always check the amount and the receiving address before sending coins."));

 +        ui->labelExplanation->setText(tr("These are your Feathercoin addresses for receiving payments. It is recommended to use a new receiving address for each transaction."));

Name change FTC

[wrapper]

Feathercoin specific changes made to convert Bitcoin to FTC 0.9.6.*

https://github.com/FeatherCoin/Feathercoin/commit/30516a6ce8d723cc3d8eb624e2d30431843f01a0

wallet.cpp

-#include "checkpoints.h"
+#include "checkpoints.h"

Order change for headers?

 + int64_t nTransactionFee = DEFAULT_TRANSACTION_FEE;

Bitcoin code replaced

 +static std::vector<CKeyID> vChangeAddresses;

Scrypt code added.

  +bool CWallet::LoadCScript(const CScript& redeemScript)
  +{
  +    /* A sanity check was added in pull #3843 to avoid adding redeemScripts
  +     * that never can be redeemed. However, old wallets may still contain
  +     * these. Do not add them to the wallet and warn. */
  +    if (redeemScript.size() > MAX_SCRIPT_ELEMENT_SIZE)
  +    {
  +        std::string strAddr = CBitcoinAddress(redeemScript.GetID()).ToString();
  +        LogPrintf("%s: Warning: This wallet contains a redeemScript of size %i which exceeds maximum size %i thus can never be redeemed. Do not use address %s.\n",
  +            __func__, redeemScript.size(), MAX_SCRIPT_ELEMENT_SIZE, strAddr);
  +        return true;
  +    }
  +
  +    return CCryptoKeyStore::AddCScript(redeemScript);
  +}
  +

Scrypt code added.

+        mapWallet[hash].BindWallet(this);

Scrypt code included

 +    LOCK2(cs_main, cs_wallet);

Lock interface changes x6

  +       // send change to one of the specified change addresses, if specified at init
  +       else if (vChangeAddresses.size())
  +       {
  +       CKeyID keyID = vChangeAddresses[GetRandInt(vChangeAddresses.size())];
  +        scriptChange.SetDestination(keyID);
  +                }
  +
  +       // send change to newly generated address

Scrypt change rules

 +      LogPrintf("keypool added key %d, size=%u\n", nEnd, setKeyPool.size());

Log interface charge

  +
  +// Add an address to the list of fixed change addresses to use. Fixed
  +// addresses can be used to reduce the pace at which wallets expand
  +// due to number of change addresses
  +void AddFixedChangeAddress(const CKeyID &changeAddress)
  +{
  +    vChangeAddresses.push_back(changeAddress);
  +} 

Scrypt interface change

[wrapper]

Feathercoin specific changes made to convert Bitcoin to FTC 0.9.6.*

https://github.com/FeatherCoin/Feathercoin/commit/30516a6ce8d723cc3d8eb624e2d30431843f01a0

wallet.h

  +// -paytxfee default
  +static const int64_t DEFAULT_TRANSACTION_FEE = 0;

Additional

  +static const int nHighTransactionFeeWarning = 0.05 * COIN;

Bitcoin code replaced

   -        nWalletVersion = FEATURE_BASE;
   -        nWalletMaxVersion = FEATURE_BASE;
   -        fFileBacked = false;
   -        nMasterKeyMaxID = 0;
   -        pwalletdbEncryption = NULL;
   -        nOrderPosNext = 0;
   -        nNextResend = 0;
   -        nLastResend = 0;

  -        nWalletVersion = FEATURE_BASE;
  -        nWalletMaxVersion = FEATURE_BASE;

Bitcoin code removed

  +        SetNull();

Scrypt interface additions set null function.

  +    }
  +    void SetNull()
  +    {
  +        nWalletVersion = FEATURE_BASE;
  +        nWalletMaxVersion = FEATURE_BASE;
  +        fFileBacked = false;

  +        nTimeFirstKey = 0;

Scrypt interface code added

 +   bool LoadCScript(const CScript& redeemScript);

Bitcoin code replaced.

 +  READWRITE(LIMITED_STRING(strComment, 65536));

 +   READWRITE(LIMITED_STRING(strOtherAccount, 65536));

 +    READWRITE(LIMITED_STRING(strComment, 65536));

Bitcoin code replaced.

[wrapper]

Feathercoin specific changes made to convert Bitcoin to FTC 0.9.6.*

https://github.com/FeatherCoin/Feathercoin/commit/30516a6ce8d723cc3d8eb624e2d30431843f01a0

walletdb.cpp

   -            if (CheckTransaction(wtx, state) && (wtx.GetHash() == hash) && state.IsValid())
   -                wtx.BindWallet(pwallet);
   -            else
             return false;
             return false;


   -            // Undo serialize changes in 31600
   -            if (31404 <= wtx.fTimeReceivedIsTxTime && wtx.fTimeReceivedIsTxTime <= 31703)
   -            {
   -                if (!ssValue.empty())
   -                {
   -                    char fTmp;
   -                    char fUnused;
   -                    ssValue >> fTmp >> fUnused >> wtx.strFromAccount;
   -                    strErr = strprintf("LoadWallet() upgrading tx ver=%d %d '%s' %s",
   -                                       wtx.fTimeReceivedIsTxTime, fTmp, wtx.strFromAccount, hash.ToString());
   -                    wtx.fTimeReceivedIsTxTime = fTmp;
   -                }
   -                else
   -                {
   -                    strErr = strprintf("LoadWallet() repairing tx ver=%d %s", wtx.fTimeReceivedIsTxTime, hash.ToString());
   -                    wtx.fTimeReceivedIsTxTime = 0;
   -                }
   -                wss.vWalletUpgrade.push_back(hash);
   -            }
   -

Bitcoin code removed

    +            if (!(CheckTransaction(wtx, state) && (wtx.GetHash() == hash) && state.IsValid()))

Scrypt code replaces

   -    // Rewrite encrypted wallets of versions 0.4.0 and 0.5.0rc:
   -    if (wss.fIsEncrypted && (wss.nFileVersion == 40000 || wss.nFileVersion == 50000))
   -        return DB_NEED_REWRITE;
   -

Bitcoin Code removed

  -    RenameThread("bitcoin-wallet");
 +    RenameThread("feathercoin-wallet");

Bitcoin code replaced

 -    LogPrintf("Salvage(aggressive) found %"PRIszu" records\n", salvagedData.size());
 +    LogPrintf("Salvage(aggressive) found %u records\n", salvagedData.size());

Bitcoin code replaced

[wrapper]

Feathercoin specific changes made to convert Bitcoin to FTC 0.9.6.*

https://github.com/FeatherCoin/Feathercoin/commit/89e49238366fd9597ca3f8e5b2711f48e402372b

chainparams.cpp

-   base58Prefixes[PUBKEY_ADDRESS] = list_of(0);
+    //how to do feathercoin ?
+   base58Prefixes[PUBKEY_ADDRESS] = list_of(14); // FeatherCoin addresses start with F

Feathercoin address setting

 -  base58Prefixes[PUBKEY_ADDRESS] = list_of(111);
 + base58Prefixes[PUBKEY_ADDRESS] = list_of(65);

  // Boost sucks, and should not be used. Workaround for Boost not being compatible with C++11;

[wrapper]

Feathercoin specific changes made to convert Bitcoin to FTC 0.9.6.*

https://github.com/FeatherCoin/Feathercoin/commit/89e49238366fd9597ca3f8e5b2711f48e402372b

src/qt/askpassphrasedialog.cpp

+                 tr("Warning: If you encrypt your wallet and lose your passphrase, you will <b>LOSE ALL OF YOUR FEATHERCOINS</b>!") + "<br><br>" + tr("Are you sure you wish to encrypt your wallet?"),

+                                         tr("Feathercoin will close now to finish the encryption process. "

+                                         "your feathercoins from being stolen by malware infecting your computer.") +

Name change interface

[wrapper]

Feathercoin specific changes made to convert Bitcoin to FTC 0.9.6.*

https://github.com/FeatherCoin/Feathercoin/commit/89e49238366fd9597ca3f8e5b2711f48e402372b

src/qt/bitcoingui.cpp

 +// Copyright (c) 2013-2014 The Feathercoin developers

Update copyright

  +    
  +    QPalette palette;
  +    palette.setBrush(QPalette::Background,QBrush(QPixmap(":/images/mainbg")));
  +    this->setPalette(palette);
  +    this->setAutoFillBackground(true);    

  +    
  +    accountReportAction = new QAction(QIcon(":/icons/account-report"), tr("&Report"), this);
  +    accountReportAction->setStatusTip(tr("Get my account report"));
  +    accountReportAction->setToolTip(accountReportAction->statusTip());
  +    accountReportAction->setCheckable(true);
  +    accountReportAction->setShortcut(QKeySequence(Qt::ALT       + Qt::Key_5));
  +    tabGroup->addAction(accountReportAction);    

  +    connect(accountReportAction, SIGNAL(triggered()), this, SLOT(showNormalIfMinimized()));
  +    connect(accountReportAction, SIGNAL(triggered()), this, SLOT(gotoAccountReportPage()));    

Interface addition scrypt

 +        aboutAction = new QAction(QIcon(":/icons/bitcoin"), tr("&About Feathercoin Core"), this);

 +        aboutAction = new QAction(QIcon(":/icons/bitcoin_testnet"), tr("&About Feathercoin Core"), this);

 +    aboutAction->setStatusTip(tr("Show information about Feathercoin"));

 +    signMessageAction->setStatusTip(tr("Sign messages with your Feathercoin addresses to prove you own them"));

 +    verifyMessageAction->setStatusTip(tr("Verify messages to ensure they were signed with specified Feathercoin addresses"));

Bitcoin Code replaced

 +        toolbar->addAction(accountReportAction);

 +    accountReportAction->setEnabled(enabled);

  +void BitcoinGUI::gotoAccountReportPage()
  +{
  +		accountReportAction->setChecked(true);
  +    if (walletFrame) walletFrame->gotoAccountReportPage();
  +}
  +

Additional code

 +    labelConnectionsIcon->setToolTip(tr("%n active connection(s) to Feathercoin network", "", count));

Replace Bitcoin code

 +    QString strTitle = tr("Feathercoin"); // default title

[wrapper]

Feathercoin specific changes made to convert Bitcoin to FTC 0.9.6.*

https://github.com/FeatherCoin/Feathercoin/commit/89e49238366fd9597ca3f8e5b2711f48e402372b

src/qt/bitcoingui.h

 +    QAction *accountReportAction;

Addition

 +    void setNumBlocks(int count);

 +    /** Switch to account report page */
 +    void gotoAccountReportPage();
 +    

Bitcoincode replace scrypt interface

[wrapper]

Feathercoin specific changes made to convert Bitcoin to FTC 0.9.6.*

https://github.com/FeatherCoin/Feathercoin/commit/89e49238366fd9597ca3f8e5b2711f48e402372b

src/qt/clientmodel.cpp

 +#include "rpcserver.h"

Include added

 +    cachedNumBlocks(0),

Bitcoin code replaced.

+    LOCK(cs_main);

 +double ClientModel::getCurrDifficulty() const
 +{
 +    return (double)GetDifficulty();
+} 
+

Code added.

  +    LOCK(cs_main);

  +    // Get required lock upfront. This avoids the GUI from getting stuck on
  +    // periodical polls if the core is holding the locks for a longer time -
  +    // for example, during a wallet rescan.
  +    TRY_LOCK(cs_main, lockMain);
  +    if(!lockMain)
  +        return;

Locks added.

  -    int newNumBlocksOfPeers = getNumBlocksOfPeers();

Bitcoin code removed

  +    if (cachedNumBlocks != newNumBlocks ||

 +        emit numBlocksChanged(newNumBlocks);

Bitcoin code replaced

   -int ClientModel::getNumBlocksOfPeers() const
   -{
   -    return GetNumBlocksOfPeers();
   -}
   -

Code added.

[wrapper]

Feathercoin specific changes made to convert Bitcoin to FTC 0.9.6.*

https://github.com/FeatherCoin/Feathercoin/commit/89e49238366fd9597ca3f8e5b2711f48e402372b

src/qt/clientmodel.h

 -    //! Return conservative estimate of total number of blocks, or 0 if unknown
-    int getNumBlocksOfPeers() const;

-    int cachedNumBlocksOfPeers;

Bitcoin code removed

+    // Return Current block
+    double getCurrDifficulty() const;    

Code added

 +    void numBlocksChanged(int count);

Bitcoin code replaced

[wrapper]

Feathercoin specific changes made to convert Bitcoin to FTC 0.9.6.*

https://github.com/FeatherCoin/Feathercoin/commit/89e49238366fd9597ca3f8e5b2711f48e402372b

src/qt/feathercoin.qrc

+ <file alias="account-report">res/icons/account-report.png</file>
+ <file alias="mainlogo">res/images/LOGO.png</file>

+ <file alias="mainbg">res/images/mainbg.png</file>

Additional image files are defined.

[wrapper]

Feathercoin specific changes made to convert Bitcoin to FTC 0.9.6.*

https://github.com/FeatherCoin/Feathercoin/commit/89e49238366fd9597ca3f8e5b2711f48e402372b

src/qt/forms/aboutdialog.ui

Further changes are made in later commits. Name and directory interface changes to definitions.

+   <string>About Feathercoin Core</string>

+   <pixmap>:/images/about</pixmap>

+   <string>&lt;b&gt;Feathercoin Core&lt;/b&gt; version</string>

+   <string notr="true">0.9.3-Standard</string>

Bitcoin code replaced

[wrapper]

Feathercoin specific changes made to convert Bitcoin to FTC 0.9.6.*

https://github.com/FeatherCoin/Feathercoin/commit/89e49238366fd9597ca3f8e5b2711f48e402372b

src/qt/forms/helpmessagedialog.ui

Help message dialog customizations in GUI. Further commits.

+  <height>327</height>

+  <string>Feathercoin Core - Command-line options</string>

+  <pixmap>:/images/about</pixmap>

+  <pixmap>:/images/about</pixmap>

+   <width>748</width>
+   <height>276</height>

Bitcoin code replaced

[wrapper]

Feathercoin specific changes made to convert Bitcoin to FTC 0.9.6.*

https://github.com/FeatherCoin/Feathercoin/commit/89e49238366fd9597ca3f8e5b2711f48e402372b

src/qt/forms/overviewpage.ui

overviewpage message dialog customizations in GUI. Further commits. Note, that changes are usually made to the GUI via the Qt creator IDE.

Large sections of this file have been updated - Review how to handle Qt layout file updates?

+    <height>344</height>

Bitcoin code replaced

 -    <widget class="QFrame" name="frame">

Bitcoin code removed

  +    <widget class="QLabel" name="labelMainlogo">
  +     <property name="text">
  +      <string/>
  +     </property>
  +     <property name="pixmap">
  +      <pixmap resource="../feathercoin.qrc">:/images/mainlogo</pixmap>
  +     </property>
  +     <property name="alignment">
  +      <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
  +     </property>
  +    </widget>
  +   </item>
  +   <item>
  +    <widget class="QLabel" name="labelOverviewPage">
  +     <property name="font">
  +      <font>
  +       <family>Arial Rounded MT Bold</family>
  +       <pointsize>11</pointsize>
  +       <weight>50</weight>
  +       <bold>false</bold>
  +      </font>
  +     </property>
  +     <property name="text">
  +      <string>OverviewPage</string>
  +     </property>
  +     <property name="alignment">
  +      <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
  +     </property>
  +    </widget>
  +   </item>
  +   <item>
  +    <widget class="QLabel" name="labelOverview1">
  +     <property name="text">
  +      <string>Feathercoin</string>
  +     </property>
  +    </widget>
  +   </item>
  +   <item>
  +    <widget class="QLabel" name="labelOverview2">
  +     <property name="text">
  +      <string>Feathercoin</string>
  +     </property>
  +    </widget>
  +   </item>
  +   <item>
  +    <spacer name="verticalSpacer">
  +     <property name="orientation">
  +      <enum>Qt::Vertical</enum>
  +     </property>
  +     <property name="sizeHint" stdset="0">
  +      <size>
  +       <width>20</width>
  +       <height>40</height>
  +      </size>
  +     </property>
  +    </spacer>
  +   </item>
  +  </layout>
  + </item>
  + <item>
  +  <layout class="QVBoxLayout" name="verticalLayout_3">
  +   <item>
  +    <widget class="QFrame" name="frame_2">

Code for Feathercoin background image?, from Dogecoin?

+     <layout class="QVBoxLayout" name="verticalLayout">

Bitcoin code replaced

   -       <layout class="QHBoxLayout" name="horizontalLayout_3">
   -       <item>
   -       <layout class="QFormLayout" name="formLayout_2">
   -       <property name="fieldGrowthPolicy">
   -       <enum>QFormLayout::AllNonFixedFieldsGrow</enum>
   -       </property>
   -       <property name="horizontalSpacing">
   -       <number>12</number>

Bitcoin code removed

  +       <widget class="QFrame" name="frame">
  +        <property name="frameShape">
  +         <enum>QFrame::StyledPanel</enum>

Code added

  + <resources>
 +  <include location="../feathercoin.qrc"/>
 + </resources>

Additonal code, after long section of code replacement, with FTC layout.

[wrapper]

Feathercoin specific changes made to convert Bitcoin to FTC 0.9.6.*

https://github.com/FeatherCoin/Feathercoin/commit/89e49238366fd9597ca3f8e5b2711f48e402372b

src/qt/overviewpage.cpp

overviwpage.cpp integrates with the ui file.

 +    int shareBalance=0; //Ready for POS

Additional code scrypt interface.

[FAQ] What is POS?

Proof of share or POS. An transaction algorythm that pays wallets based on their exposed contents, in addition or instead of POW (proof of work).

+    ui->labelShare->setText(BitcoinUnits::formatWithUnit(unit, shareBalance));

Additional code

   -    // only show immature (newly mined) balance if it's non       -zero, so as not to complicate things
   -    // for the non       -mining users
   -    bool showImmature = immatureBalance != 0; 

Bitcoin code removed

 + bool showImmature =true; 

Replaced Bitcoin code

 +    
 + setOverview();
 + }
 +
 + void OverviewPage::setOverview()
 + {
 +   ui->labelOverview1->setText(tr("Current Block :")+tr(" %1 ").arg(clientModel->getNumBlocks()));
 +   ui->labelOverview2->setText(tr("Current Difficulty :")+tr(" %1").arg(clientModel->getCurrDifficulty()));

Additional code

+   // Show RPC information when blocks had changed
+   connect(model, SIGNAL(numBlocksChanged(int)), this, SLOT(setOverview()));

Additional code

[wrapper]

Feathercoin specific changes made to convert Bitcoin to FTC 0.9.6.*

https://github.com/FeatherCoin/Feathercoin/commit/89e49238366fd9597ca3f8e5b2711f48e402372b

src/qt/overviewpage.h

overviwpage.h integrates with the ui file.

+    void setOverview();

Additional code

[wrapper]

Feathercoin specific changes made to convert Bitcoin to FTC 0.9.6.*

https://github.com/FeatherCoin/Feathercoin/commit/89e49238366fd9597ca3f8e5b2711f48e402372b

src/qt/reportview.cpp

New file with the FTC reports update in? 500 llines code.

[wrapper]

Feathercoin specific changes made to convert Bitcoin to FTC 0.9.6.*

https://github.com/FeatherCoin/Feathercoin/commit/89e49238366fd9597ca3f8e5b2711f48e402372b

src/qt/reportview.h

New file containing FTC reports addon. 91 lines code.