r1

src/qt/bitcoinaddressvalidator.cpp

@@ -0,0 +1,91 @@
+// Copyright (c) 2011-2014 The Bitcoin developers
+// Copyright (c) 2014-2015 The Dash developers
+// Copyright (c) 2015-2017 The PIVX developers
+// Distributed under the MIT/X11 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 Agrarian address
+    CBitcoinAddress addr(input.toStdString());
+    if (addr.IsValid())
+        return QValidator::Acceptable;
+
+    return QValidator::Invalid;
+}