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// Copyright (c) 2011-2014 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include "bitcoinaddressvalidator.h"
#include "base58.h"
/* Base58 characters are:
"123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"
This is:
- All numbers except for '0'
- All upper-case letters except for 'I' and 'O'
- All lower-case letters except for 'l'
*/
BitcoinAddressEntryValidator::BitcoinAddressEntryValidator(QObject *parent) :
QValidator(parent)
{
}
QValidator::State BitcoinAddressEntryValidator::validate(QString &input, int &pos) const
{
Q_UNUSED(pos);
// Empty address is "intermediate" input
if (input.isEmpty())
return QValidator::Intermediate;
// Correction
for (int idx = 0; idx < input.size();)
{
bool removeChar = false;
QChar ch = input.at(idx);
// Corrections made are very conservative on purpose, to avoid
// users unexpectedly getting away with typos that would normally
// be detected, and thus sending to the wrong address.
switch(ch.unicode())
{
// Qt categorizes these as "Other_Format" not "Separator_Space"
case 0x200B: // ZERO WIDTH SPACE
case 0xFEFF: // ZERO WIDTH NO-BREAK SPACE
removeChar = true;
break;
default:
break;
}
// Remove whitespace
if (ch.isSpace())
removeChar = true;
// To next character
if (removeChar)
input.remove(idx, 1);
else
++idx;
}
// Validation
QValidator::State state = QValidator::Acceptable;
for (int idx = 0; idx < input.size(); ++idx)
{
int ch = input.at(idx).unicode();
if (((ch >= '0' && ch<='9') ||
(ch >= 'a' && ch<='z') ||
(ch >= 'A' && ch<='Z')) &&
ch != 'l' && ch != 'I' && ch != '0' && ch != 'O')
{
// Alphanumeric and not a 'forbidden' character
}
else
{
state = QValidator::Invalid;
}
}
return state;
}
BitcoinAddressCheckValidator::BitcoinAddressCheckValidator(QObject *parent) :
QValidator(parent)
{
}
QValidator::State BitcoinAddressCheckValidator::validate(QString &input, int &pos) const
{
Q_UNUSED(pos);
// Validate the passed Bitcoin address
CBitcoinAddress addr(input.toStdString());
if (addr.IsValid())
return QValidator::Acceptable;
return QValidator::Invalid;
}