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view src/qt/transactiondesc.cpp @ 1232:d8e425ad0c2b draft

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Make debug info more interesting (show SHA160 addresses for inputs)
author Wladimir J. van der Laan <laanwj@gmail.com>
date Fri, 29 Jul 2011 23:11:40 +0200
parents 175b23373bd3
children cba27e4719cf
line wrap: on
line source

#include <transactiondesc.h>

#include "guiutil.h"

#include "headers.h"
#include "qtui.h"

#include <QString>

// Taken straight from ui.cpp
// TODO: Convert to use QStrings, Qt::Escape and tr()
//   or: refactor and put describeAsHTML() into bitcoin core but that is unneccesary with better
//       UI<->core API, no need to put display logic in core.

using namespace std;

static string HtmlEscape(const char* psz, bool fMultiLine=false)
{
    int len = 0;
    for (const char* p = psz; *p; p++)
    {
             if (*p == '<') len += 4;
        else if (*p == '>') len += 4;
        else if (*p == '&') len += 5;
        else if (*p == '"') len += 6;
        else if (*p == ' ' && p > psz && p[-1] == ' ' && p[1] == ' ') len += 6;
        else if (*p == '\n' && fMultiLine) len += 5;
        else
            len++;
    }
    string str;
    str.reserve(len);
    for (const char* p = psz; *p; p++)
    {
             if (*p == '<') str += "&lt;";
        else if (*p == '>') str += "&gt;";
        else if (*p == '&') str += "&amp;";
        else if (*p == '"') str += "&quot;";
        else if (*p == ' ' && p > psz && p[-1] == ' ' && p[1] == ' ') str += "&nbsp;";
        else if (*p == '\n' && fMultiLine) str += "<br>\n";
        else
            str += *p;
    }
    return str;
}

static string HtmlEscape(const string& str, bool fMultiLine=false)
{
    return HtmlEscape(str.c_str(), fMultiLine);
}

static string FormatTxStatus(const CWalletTx& wtx)
{
    // Status
    if (!wtx.IsFinal())
    {
        if (wtx.nLockTime < 500000000)
            return strprintf(_("Open for %d blocks"), nBestHeight - wtx.nLockTime);
        else
            return strprintf(_("Open until %s"), GUIUtil::DateTimeStr(wtx.nLockTime).toStdString().c_str());
    }
    else
    {
        int nDepth = wtx.GetDepthInMainChain();
        if (GetAdjustedTime() - wtx.nTimeReceived > 2 * 60 && wtx.GetRequestCount() == 0)
            return strprintf(_("%d/offline?"), nDepth);
        else if (nDepth < 6)
            return strprintf(_("%d/unconfirmed"), nDepth);
        else
            return strprintf(_("%d confirmations"), nDepth);
    }
}

string TransactionDesc::toHTML(CWallet *wallet, CWalletTx &wtx)
{
    string strHTML;
    CRITICAL_BLOCK(wallet->cs_mapAddressBook)
    {
        strHTML.reserve(4000);
        strHTML += "<html><font face='verdana, arial, helvetica, sans-serif'>";

        int64 nTime = wtx.GetTxTime();
        int64 nCredit = wtx.GetCredit();
        int64 nDebit = wtx.GetDebit();
        int64 nNet = nCredit - nDebit;



        strHTML += _("<b>Status:</b> ") + FormatTxStatus(wtx);
        int nRequests = wtx.GetRequestCount();
        if (nRequests != -1)
        {
            if (nRequests == 0)
                strHTML += _(", has not been successfully broadcast yet");
            else if (nRequests == 1)
                strHTML += strprintf(_(", broadcast through %d node"), nRequests);
            else
                strHTML += strprintf(_(", broadcast through %d nodes"), nRequests);
        }
        strHTML += "<br>";

        strHTML += _("<b>Date:</b> ") + (nTime ? GUIUtil::DateTimeStr(nTime).toStdString() : "") + "<br>";


        //
        // From
        //
        if (wtx.IsCoinBase())
        {
            strHTML += _("<b>Source:</b> Generated<br>");
        }
        else if (!wtx.mapValue["from"].empty())
        {
            // Online transaction
            if (!wtx.mapValue["from"].empty())
                strHTML += _("<b>From:</b> ") + HtmlEscape(wtx.mapValue["from"]) + "<br>";
        }
        else
        {
            // Offline transaction
            if (nNet > 0)
            {
                // Credit
                BOOST_FOREACH(const CTxOut& txout, wtx.vout)
                {
                    if (wallet->IsMine(txout))
                    {
                        CBitcoinAddress address;
                        if (ExtractAddress(txout.scriptPubKey, wallet, address))
                        {
                            if (wallet->mapAddressBook.count(address))
                            {
                                strHTML += string() + _("<b>From:</b> ") + _("unknown") + "<br>";
                                strHTML += _("<b>To:</b> ");
                                strHTML += HtmlEscape(address.ToString());
                                if (!wallet->mapAddressBook[address].empty())
                                    strHTML += _(" (yours, label: ") + wallet->mapAddressBook[address] + ")";
                                else
                                    strHTML += _(" (yours)");
                                strHTML += "<br>";
                            }
                        }
                        break;
                    }
                }
            }
        }


        //
        // To
        //
        string strAddress;
        if (!wtx.mapValue["to"].empty())
        {
            // Online transaction
            strAddress = wtx.mapValue["to"];
            strHTML += _("<b>To:</b> ");
            if (wallet->mapAddressBook.count(strAddress) && !wallet->mapAddressBook[strAddress].empty())
                strHTML += wallet->mapAddressBook[strAddress] + " ";
            strHTML += HtmlEscape(strAddress) + "<br>";
        }


        //
        // Amount
        //
        if (wtx.IsCoinBase() && nCredit == 0)
        {
            //
            // Coinbase
            //
            int64 nUnmatured = 0;
            BOOST_FOREACH(const CTxOut& txout, wtx.vout)
                nUnmatured += wallet->GetCredit(txout);
            strHTML += _("<b>Credit:</b> ");
            if (wtx.IsInMainChain())
                strHTML += strprintf(_("(%s matures in %d more blocks)"), FormatMoney(nUnmatured).c_str(), wtx.GetBlocksToMaturity());
            else
                strHTML += _("(not accepted)");
            strHTML += "<br>";
        }
        else if (nNet > 0)
        {
            //
            // Credit
            //
            strHTML += _("<b>Credit:</b> ") + FormatMoney(nNet) + "<br>";
        }
        else
        {
            bool fAllFromMe = true;
            BOOST_FOREACH(const CTxIn& txin, wtx.vin)
                fAllFromMe = fAllFromMe && wallet->IsMine(txin);

            bool fAllToMe = true;
            BOOST_FOREACH(const CTxOut& txout, wtx.vout)
                fAllToMe = fAllToMe && wallet->IsMine(txout);

            if (fAllFromMe)
            {
                //
                // Debit
                //
                BOOST_FOREACH(const CTxOut& txout, wtx.vout)
                {
                    if (wallet->IsMine(txout))
                        continue;

                    if (wtx.mapValue["to"].empty())
                    {
                        // Offline transaction
                        CBitcoinAddress address;
                        if (ExtractAddress(txout.scriptPubKey, 0, address))
                        {
                            strHTML += _("<b>To:</b> ");
                            if (wallet->mapAddressBook.count(address) && !wallet->mapAddressBook[address].empty())
                                strHTML += wallet->mapAddressBook[address] + " ";
                            strHTML += address.ToString();
                            strHTML += "<br>";
                        }
                    }

                    strHTML += _("<b>Debit:</b> ") + FormatMoney(-txout.nValue) + "<br>";
                }

                if (fAllToMe)
                {
                    // Payment to self
                    int64 nChange = wtx.GetChange();
                    int64 nValue = nCredit - nChange;
                    strHTML += _("<b>Debit:</b> ") + FormatMoney(-nValue) + "<br>";
                    strHTML += _("<b>Credit:</b> ") + FormatMoney(nValue) + "<br>";
                }

                int64 nTxFee = nDebit - wtx.GetValueOut();
                if (nTxFee > 0)
                    strHTML += _("<b>Transaction fee:</b> ") + FormatMoney(-nTxFee) + "<br>";
            }
            else
            {
                //
                // Mixed debit transaction
                //
                BOOST_FOREACH(const CTxIn& txin, wtx.vin)
                    if (wallet->IsMine(txin))
                        strHTML += _("<b>Debit:</b> ") + FormatMoney(-wallet->GetDebit(txin)) + "<br>";
                BOOST_FOREACH(const CTxOut& txout, wtx.vout)
                    if (wallet->IsMine(txout))
                        strHTML += _("<b>Credit:</b> ") + FormatMoney(wallet->GetCredit(txout)) + "<br>";
            }
        }

        strHTML += _("<b>Net amount:</b> ") + FormatMoney(nNet, true) + "<br>";


        //
        // Message
        //
        if (!wtx.mapValue["message"].empty())
            strHTML += string() + "<br><b>" + _("Message:") + "</b><br>" + HtmlEscape(wtx.mapValue["message"], true) + "<br>";
        if (!wtx.mapValue["comment"].empty())
            strHTML += string() + "<br><b>" + _("Comment:") + "</b><br>" + HtmlEscape(wtx.mapValue["comment"], true) + "<br>";

        if (wtx.IsCoinBase())
            strHTML += string() + "<br>" + _("Generated coins must wait 120 blocks before they can be spent.  When you generated this block, it was broadcast to the network to be added to the block chain.  If it fails to get into the chain, it will change to \"not accepted\" and not be spendable.  This may occasionally happen if another node generates a block within a few seconds of yours.") + "<br>";


        //
        // Debug view
        //
        if (fDebug)
        {
            strHTML += "<hr><br>Debug information<br><br>";
            BOOST_FOREACH(const CTxIn& txin, wtx.vin)
                if(wallet->IsMine(txin))
                    strHTML += "<b>Debit:</b> " + FormatMoney(-wallet->GetDebit(txin)) + "<br>";
            BOOST_FOREACH(const CTxOut& txout, wtx.vout)
                if(wallet->IsMine(txout))
                    strHTML += "<b>Credit:</b> " + FormatMoney(wallet->GetCredit(txout)) + "<br>";

            strHTML += "<br><b>Transaction:</b><br>";
            strHTML += HtmlEscape(wtx.ToString(), true);

            CTxDB txdb("r"); // To fetch source txouts

            strHTML += "<br><b>Inputs:</b>";
            strHTML += "<ul>";
            CRITICAL_BLOCK(wallet->cs_mapWallet)
            {
                BOOST_FOREACH(const CTxIn& txin, wtx.vin)
                {
                    COutPoint prevout = txin.prevout;

                    CTransaction prev;
                    if(txdb.ReadDiskTx(prevout.hash, prev))
                    {
                        if (prevout.n < prev.vout.size())
                        {
                            strHTML += "<li>";
                            const CTxOut &vout = prev.vout[prevout.n];
                            CBitcoinAddress address;
                            if (ExtractAddress(vout.scriptPubKey, 0, address))
                            {
                                if (wallet->mapAddressBook.count(address) && !wallet->mapAddressBook[address].empty())
                                    strHTML += wallet->mapAddressBook[address] + " ";
                                strHTML += address.ToString();
                            }
                            strHTML = strHTML + " Amount=" + FormatMoney(vout.nValue);
                            strHTML = strHTML + " IsMine=" + (wallet->IsMine(vout) ? "true" : "false") + "</li>";
                        }
                    }
                }
            }
            strHTML += "</ul>";
        }



        strHTML += "</font></html>";
    }
    return strHTML;
}