| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtXmlPatterns module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
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| ** GNU Lesser General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU Lesser |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
| ** packaging of this file. Please review the following information to |
| ** ensure the GNU Lesser General Public License version 3 requirements |
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| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
| ** Qt Foundation. The licenses are as published by the Free Software |
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| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include <QByteArray> |
| #include <QtGlobal> |
| |
| #include "qbuiltintypes_p.h" |
| #include "qvalidationerror_p.h" |
| |
| #include "qbase64binary_p.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| using namespace QPatternist; |
| |
| Base64Binary::Base64Binary(const QByteArray &val) : m_value(val) |
| { |
| } |
| |
| const char Base64Binary::Base64DecMap[128] = |
| { |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x3E, 0x00, 0x00, 0x00, 0x3F, |
| 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, |
| 0x3C, 0x3D, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, |
| 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, |
| 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, |
| 0x17, 0x18, 0x19, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, |
| 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, |
| 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, |
| 0x31, 0x32, 0x33, 0x00, 0x00, 0x00, 0x00, 0x00 |
| }; |
| |
| void Base64Binary::base64Decode(const QByteArray &in, QByteArray &out, bool &ok) |
| { |
| out.resize(0); |
| |
| if(in.isEmpty()) |
| { |
| ok = false; |
| return; |
| } |
| |
| ok = true; |
| int len = in.size(), tail = len; |
| const char *const data = in.data(); |
| unsigned int eqCount = 0; |
| |
| // Find the tail end of the actual encoded data even if |
| // there is/are trailing CR and/or LF. |
| while(data[tail - 1] == '=') |
| { |
| --tail; |
| if(data[tail] != '=') |
| len = tail; |
| else |
| ++eqCount; |
| } |
| |
| if(eqCount > 2) |
| { |
| ok = false; |
| return; |
| } |
| |
| unsigned int outIdx = 0; |
| const int count = len; // We modify len below |
| out.resize((count)); |
| |
| for(int idx = 0; idx < count; ++idx) |
| { |
| const unsigned char ch = data[idx]; |
| if((ch > 47 && ch < 58) || |
| (ch > 64 && ch < 91) || |
| (ch > 96 && ch < 123) || |
| ch == '+' || |
| ch == '/') |
| { |
| out[outIdx++] = Base64DecMap[ch]; |
| } |
| else if(ch == '=') |
| { |
| if((idx + 1) == count || data[idx + 1] == '=') |
| { |
| out[++outIdx] = Base64DecMap[ch]; |
| continue; |
| } |
| |
| ok = false; |
| return; |
| } |
| else if(ch == ' ') |
| { |
| /* One space is ok, and the previously applied whitespace facet(not implemented |
| * at this time of writing) have ensured it's only one space, so we assume that. */ |
| --tail; |
| --len; |
| continue; |
| } |
| else |
| { |
| ok = false; |
| return; |
| } |
| } |
| |
| if(outIdx % 4 != 0) |
| { |
| ok = false; |
| return; |
| } |
| |
| out.resize(len); |
| |
| // 4-byte to 3-byte conversion |
| len = (tail > (len / 4)) ? tail - (len / 4) : 0; |
| int sidx = 0, didx = 0; |
| if(len > 1) |
| { |
| while(didx < len - 2) |
| { |
| out[didx] =(((out[sidx] << 2) & 255) | ((out[sidx + 1] >> 4) & 003)); |
| out[didx + 1] =(((out[sidx + 1] << 4) & 255) | ((out[sidx + 2] >> 2) & 017)); |
| out[didx + 2] =(((out[sidx + 2] << 6) & 255) | (out[sidx + 3] & 077)); |
| sidx += 4; |
| didx += 3; |
| } |
| } |
| |
| if(didx < len) |
| out[didx] =(((out[sidx] << 2) & 255) | ((out[sidx + 1] >> 4) & 003)); |
| |
| if(++didx < len) |
| out[didx] =(((out[sidx + 1] << 4) & 255) | ((out[sidx + 2] >> 2) & 017)); |
| |
| // Resize the output buffer |
| if(len == 0 || len < out.size()) |
| out.resize(len); |
| } |
| |
| AtomicValue::Ptr Base64Binary::fromLexical(const QString &str) |
| { |
| const QString simple(str.simplified()); |
| if(simple.isEmpty()) |
| return AtomicValue::Ptr(new Base64Binary(QByteArray())); |
| |
| bool ok = false; |
| QByteArray result; |
| base64Decode(simple.toUtf8(), result, ok); |
| |
| if(ok) |
| return AtomicValue::Ptr(new Base64Binary(result)); |
| else |
| return ValidationError::createError(); |
| } |
| |
| Base64Binary::Ptr Base64Binary::fromValue(const QByteArray &data) |
| { |
| return Base64Binary::Ptr(new Base64Binary(data)); |
| } |
| |
| QString Base64Binary::stringValue() const |
| { |
| return QString::fromLatin1(m_value.toBase64().constData()); |
| } |
| |
| ItemType::Ptr Base64Binary::type() const |
| { |
| return BuiltinTypes::xsBase64Binary; |
| } |
| |
| QT_END_NAMESPACE |