136 lines
4.1 KiB
C++
136 lines
4.1 KiB
C++
/*
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* This file is part of the Flowee project
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* Copyright (c) 2011-2014 The Bitcoin Core developers
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* Copyright (C) 2017,2019 Tom Zander <tom@flowee.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "bitcoinaddressvalidator.h"
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#include <encodings_legacy.h>
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#include <Application.h>
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#include <cashaddr.h>
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/* Base58 characters are:
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"123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"
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This is:
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- All numbers except for '0'
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- All upper-case letters except for 'I' and 'O'
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- All lower-case letters except for 'l'
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*/
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BitcoinAddressEntryValidator::BitcoinAddressEntryValidator(QObject *parent) :
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QValidator(parent)
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{
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}
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QValidator::State BitcoinAddressEntryValidator::validate(QString &input, int &pos) const
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{
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Q_UNUSED(pos);
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// Empty address is "intermediate" input
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if (input.isEmpty())
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return QValidator::Intermediate;
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enum Type {
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Old,
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Cash
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};
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static const QString CashPrefix = "bitcoincash:";
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Type type = (input.startsWith('q') || input.startsWith('p')
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|| input.startsWith(CashPrefix.left(10))) ? Cash : Old;
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// Correction
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for (int idx = 0; idx < input.size();) {
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bool removeChar = false;
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QChar ch = input.at(idx);
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// Corrections made are very conservative on purpose, to avoid
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// users unexpectedly getting away with typos that would normally
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// be detected, and thus sending to the wrong address.
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switch(ch.unicode())
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{
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// Qt categorizes these as "Other_Format" not "Separator_Space"
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case 0x200B: // ZERO WIDTH SPACE
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case 0xFEFF: // ZERO WIDTH NO-BREAK SPACE
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removeChar = true;
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break;
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default:
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break;
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}
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// Remove whitespace
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if (ch.isSpace())
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removeChar = true;
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// To next character
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if (removeChar) {
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input.remove(idx, 1);
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} else {
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if (type == Cash && ch.isUpper())
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input[idx] = input.at(idx).toLower();
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++idx;
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}
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}
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int idx = 0;
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if (type == Cash) { // skip over the 'bitcoincash:' prefix
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QString left = input.left(12);
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if (CashPrefix.left(left.size()) == left)
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idx = left.size();
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}
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for (; idx < input.size(); ++idx) {
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int ch = input.at(idx).unicode();
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switch (type) {
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case Old:
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// Alphanumeric and not a 'forbidden' character
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if (!(((ch >= '0' && ch<='9') || (ch >= 'a' && ch<='z') || (ch >= 'A' && ch<='Z'))
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&& ch != 'l' && ch != 'I' && ch != '0' && ch != 'O'))
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return QValidator::Invalid;
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break;
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case Cash:
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if (!(((ch >= '0' && ch<='9') || (ch >= 'a' && ch<='z'))
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&& ch != 'i' && ch != 'b' && ch != 'i' && ch != 'o'))
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return QValidator::Invalid;
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break;
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}
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}
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return QValidator::Acceptable;
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}
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BitcoinAddressCheckValidator::BitcoinAddressCheckValidator(QObject *parent) :
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QValidator(parent)
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{
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}
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QValidator::State BitcoinAddressCheckValidator::validate(QString &input, int &pos) const
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{
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Q_UNUSED(pos);
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// Validate the passed Bitcoin address
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CBitcoinAddress addr(input.toStdString());
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if (addr.IsValid())
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return QValidator::Acceptable;
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CashAddress::Content c = CashAddress::decodeCashAddrContent(input.toStdString(), "bitcoincash");
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if ((c.type == CashAddress::PUBKEY_TYPE || c.type == CashAddress::SCRIPT_TYPE) && c.hash.size() == 20)
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return QValidator::Acceptable;
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return QValidator::Invalid;
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}
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