| 1 | /****************************************************************************
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| 2 | **
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| 3 | ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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| 4 | ** All rights reserved.
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| 5 | ** Contact: Nokia Corporation (qt-info@nokia.com)
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| 6 | **
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| 7 | ** This file is part of the QtDBus module of the Qt Toolkit.
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| 8 | **
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| 9 | ** $QT_BEGIN_LICENSE:LGPL$
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| 10 | ** Commercial Usage
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| 11 | ** Licensees holding valid Qt Commercial licenses may use this file in
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| 12 | ** accordance with the Qt Commercial License Agreement provided with the
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| 13 | ** Software or, alternatively, in accordance with the terms contained in
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| 14 | ** a written agreement between you and Nokia.
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| 15 | **
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| 16 | ** GNU Lesser General Public License Usage
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| 17 | ** Alternatively, this file may be used under the terms of the GNU Lesser
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| 18 | ** General Public License version 2.1 as published by the Free Software
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| 19 | ** Foundation and appearing in the file LICENSE.LGPL included in the
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| 20 | ** packaging of this file. Please review the following information to
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| 21 | ** ensure the GNU Lesser General Public License version 2.1 requirements
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| 22 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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| 23 | **
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| 24 | ** In addition, as a special exception, Nokia gives you certain additional
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| 25 | ** rights. These rights are described in the Nokia Qt LGPL Exception
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| 26 | ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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| 27 | **
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| 28 | ** GNU General Public License Usage
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| 29 | ** Alternatively, this file may be used under the terms of the GNU
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| 30 | ** General Public License version 3.0 as published by the Free Software
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| 31 | ** Foundation and appearing in the file LICENSE.GPL included in the
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| 32 | ** packaging of this file. Please review the following information to
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| 33 | ** ensure the GNU General Public License version 3.0 requirements will be
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| 34 | ** met: http://www.gnu.org/copyleft/gpl.html.
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| 35 | **
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| 36 | ** If you have questions regarding the use of this file, please contact
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| 37 | ** Nokia at qt-info@nokia.com.
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| 38 | ** $QT_END_LICENSE$
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| 39 | **
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| 40 | ****************************************************************************/
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| 41 |
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| 42 | #include "qdbusutil_p.h"
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| 43 |
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| 44 | #include "qdbus_symbols_p.h"
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| 45 |
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| 46 | #include <QtCore/qstringlist.h>
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| 47 |
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| 48 | #include "qdbusargument.h"
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| 49 |
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| 50 | #ifndef QT_NO_DBUS
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| 51 |
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| 52 | QT_BEGIN_NAMESPACE
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| 53 |
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| 54 | static inline bool isValidCharacterNoDash(const QChar &c)
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| 55 | {
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| 56 | register ushort u = c.unicode();
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| 57 | return (u >= 'a' && u <= 'z')
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| 58 | || (u >= 'A' && u <= 'Z')
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| 59 | || (u >= '0' && u <= '9')
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| 60 | || (u == '_');
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| 61 | }
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| 62 |
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| 63 | static inline bool isValidCharacter(const QChar &c)
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| 64 | {
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| 65 | register ushort u = c.unicode();
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| 66 | return (u >= 'a' && u <= 'z')
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| 67 | || (u >= 'A' && u <= 'Z')
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| 68 | || (u >= '0' && u <= '9')
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| 69 | || (u == '_') || (u == '-');
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| 70 | }
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| 71 |
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| 72 | static inline bool isValidNumber(const QChar &c)
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| 73 | {
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| 74 | register ushort u = c.unicode();
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| 75 | return (u >= '0' && u <= '9');
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| 76 | }
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| 77 |
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| 78 | static bool argToString(const QDBusArgument &arg, QString &out);
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| 79 |
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| 80 | static bool variantToString(const QVariant &arg, QString &out)
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| 81 | {
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| 82 | int argType = arg.userType();
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| 83 |
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| 84 | if (argType == QVariant::StringList) {
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| 85 | out += QLatin1Char('{');
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| 86 | QStringList list = arg.toStringList();
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| 87 | foreach (QString item, list)
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| 88 | out += QLatin1Char('\"') + item + QLatin1String("\", ");
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| 89 | if (!list.isEmpty())
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| 90 | out.chop(2);
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| 91 | out += QLatin1Char('}');
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| 92 | } else if (argType == QVariant::ByteArray) {
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| 93 | out += QLatin1Char('{');
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| 94 | QByteArray list = arg.toByteArray();
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| 95 | for (int i = 0; i < list.count(); ++i) {
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| 96 | out += QString::number(list.at(i));
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| 97 | out += QLatin1String(", ");
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| 98 | }
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| 99 | if (!list.isEmpty())
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| 100 | out.chop(2);
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| 101 | out += QLatin1Char('}');
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| 102 | } else if (argType == QVariant::List) {
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| 103 | out += QLatin1Char('{');
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| 104 | QList<QVariant> list = arg.toList();
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| 105 | foreach (QVariant item, list) {
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| 106 | if (!variantToString(item, out))
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| 107 | return false;
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| 108 | out += QLatin1String(", ");
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| 109 | }
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| 110 | if (!list.isEmpty())
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| 111 | out.chop(2);
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| 112 | out += QLatin1Char('}');
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| 113 | } else if (argType == QMetaType::Char || argType == QMetaType::Short || argType == QMetaType::Int
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| 114 | || argType == QMetaType::Long || argType == QMetaType::LongLong) {
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| 115 | out += QString::number(arg.toLongLong());
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| 116 | } else if (argType == QMetaType::UChar || argType == QMetaType::UShort || argType == QMetaType::UInt
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| 117 | || argType == QMetaType::ULong || argType == QMetaType::ULongLong) {
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| 118 | out += QString::number(arg.toULongLong());
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| 119 | } else if (argType == QMetaType::Double) {
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| 120 | out += QString::number(arg.toDouble());
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| 121 | } else if (argType == QMetaType::Bool) {
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| 122 | out += QLatin1String(arg.toBool() ? "true" : "false");
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| 123 | } else if (argType == qMetaTypeId<QDBusArgument>()) {
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| 124 | argToString(qvariant_cast<QDBusArgument>(arg), out);
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| 125 | } else if (argType == qMetaTypeId<QDBusObjectPath>()) {
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| 126 | const QString path = qvariant_cast<QDBusObjectPath>(arg).path();
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| 127 | out += QLatin1String("[ObjectPath: ");
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| 128 | out += path;
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| 129 | out += QLatin1Char(']');
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| 130 | } else if (argType == qMetaTypeId<QDBusSignature>()) {
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| 131 | out += QLatin1String("[Signature: ") + qvariant_cast<QDBusSignature>(arg).signature();
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| 132 | out += QLatin1Char(']');
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| 133 | } else if (argType == qMetaTypeId<QDBusVariant>()) {
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| 134 | const QVariant v = qvariant_cast<QDBusVariant>(arg).variant();
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| 135 | out += QLatin1String("[Variant");
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| 136 | int vUserType = v.userType();
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| 137 | if (vUserType != qMetaTypeId<QDBusVariant>()
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| 138 | && vUserType != qMetaTypeId<QDBusSignature>()
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| 139 | && vUserType != qMetaTypeId<QDBusObjectPath>()
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| 140 | && vUserType != qMetaTypeId<QDBusArgument>())
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| 141 | out += QLatin1Char('(') + QLatin1String(v.typeName()) + QLatin1Char(')');
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| 142 | out += QLatin1String(": ");
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| 143 | if (!variantToString(v, out))
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| 144 | return false;
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| 145 | out += QLatin1Char(']');
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| 146 | } else if (arg.canConvert(QVariant::String)) {
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| 147 | out += QLatin1Char('\"') + arg.toString() + QLatin1Char('\"');
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| 148 | } else {
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| 149 | out += QLatin1Char('[');
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| 150 | out += QLatin1String(arg.typeName());
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| 151 | out += QLatin1Char(']');
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| 152 | }
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| 153 |
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| 154 | return true;
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| 155 | }
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| 156 |
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| 157 | bool argToString(const QDBusArgument &busArg, QString &out)
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| 158 | {
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| 159 | QString busSig = busArg.currentSignature();
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| 160 | bool doIterate = false;
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| 161 | QDBusArgument::ElementType elementType = busArg.currentType();
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| 162 |
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| 163 | if (elementType != QDBusArgument::BasicType && elementType != QDBusArgument::VariantType
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| 164 | && elementType != QDBusArgument::MapEntryType)
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| 165 | out += QLatin1String("[Argument: ") + busSig + QLatin1Char(' ');
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| 166 |
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| 167 | switch (elementType) {
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| 168 | case QDBusArgument::BasicType:
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| 169 | case QDBusArgument::VariantType:
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| 170 | if (!variantToString(busArg.asVariant(), out))
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| 171 | return false;
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| 172 | break;
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| 173 | case QDBusArgument::StructureType:
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| 174 | busArg.beginStructure();
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| 175 | doIterate = true;
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| 176 | break;
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| 177 | case QDBusArgument::ArrayType:
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| 178 | busArg.beginArray();
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| 179 | out += QLatin1Char('{');
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| 180 | doIterate = true;
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| 181 | break;
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| 182 | case QDBusArgument::MapType:
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| 183 | busArg.beginMap();
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| 184 | out += QLatin1Char('{');
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| 185 | doIterate = true;
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| 186 | break;
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| 187 | case QDBusArgument::MapEntryType:
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| 188 | busArg.beginMapEntry();
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| 189 | if (!variantToString(busArg.asVariant(), out))
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| 190 | return false;
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| 191 | out += QLatin1String(" = ");
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| 192 | if (!argToString(busArg, out))
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| 193 | return false;
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| 194 | busArg.endMapEntry();
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| 195 | break;
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| 196 | case QDBusArgument::UnknownType:
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| 197 | default:
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| 198 | out += QLatin1String("<ERROR - Unknown Type>");
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| 199 | return false;
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| 200 | }
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| 201 | if (doIterate && !busArg.atEnd()) {
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| 202 | while (!busArg.atEnd()) {
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| 203 | if (!argToString(busArg, out))
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| 204 | return false;
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| 205 | out += QLatin1String(", ");
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| 206 | }
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| 207 | out.chop(2);
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| 208 | }
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| 209 | switch (elementType) {
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| 210 | case QDBusArgument::BasicType:
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| 211 | case QDBusArgument::VariantType:
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| 212 | case QDBusArgument::UnknownType:
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| 213 | case QDBusArgument::MapEntryType:
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| 214 | // nothing to do
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| 215 | break;
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| 216 | case QDBusArgument::StructureType:
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| 217 | busArg.endStructure();
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| 218 | break;
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| 219 | case QDBusArgument::ArrayType:
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| 220 | out += QLatin1Char('}');
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| 221 | busArg.endArray();
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| 222 | break;
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| 223 | case QDBusArgument::MapType:
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| 224 | out += QLatin1Char('}');
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| 225 | busArg.endMap();
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| 226 | break;
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| 227 | }
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| 228 |
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| 229 | if (elementType != QDBusArgument::BasicType && elementType != QDBusArgument::VariantType
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| 230 | && elementType != QDBusArgument::MapEntryType)
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| 231 | out += QLatin1Char(']');
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| 232 |
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| 233 | return true;
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| 234 | }
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| 235 |
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| 236 | /*!
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| 237 | \namespace QDBusUtil
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| 238 | \inmodule QtDBus
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| 239 | \internal
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| 240 |
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| 241 | \brief The QDBusUtil namespace contains a few functions that are of general use when
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| 242 | dealing with D-Bus strings.
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| 243 | */
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| 244 | namespace QDBusUtil
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| 245 | {
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| 246 | /*!
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| 247 | \internal
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| 248 | \since 4.5
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| 249 | Dumps the contents of a QtDBus argument from \a arg into a string.
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| 250 | */
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| 251 | QString argumentToString(const QVariant &arg)
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| 252 | {
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| 253 | QString out;
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| 254 |
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| 255 | variantToString(arg, out);
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| 256 |
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| 257 | return out;
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| 258 | }
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| 259 |
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| 260 | /*!
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| 261 | \internal
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| 262 | \fn bool QDBusUtil::isValidPartOfObjectPath(const QString &part)
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| 263 | See QDBusUtil::isValidObjectPath
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| 264 | */
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| 265 | bool isValidPartOfObjectPath(const QString &part)
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| 266 | {
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| 267 | if (part.isEmpty())
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| 268 | return false; // can't be valid if it's empty
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| 269 |
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| 270 | const QChar *c = part.unicode();
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| 271 | for (int i = 0; i < part.length(); ++i)
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| 272 | if (!isValidCharacterNoDash(c[i]))
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| 273 | return false;
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| 274 |
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| 275 | return true;
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| 276 | }
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| 277 |
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| 278 | /*!
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| 279 | \fn bool QDBusUtil::isValidInterfaceName(const QString &ifaceName)
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| 280 | Returns true if this is \a ifaceName is a valid interface name.
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| 281 |
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| 282 | Valid interface names must:
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| 283 | \list
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| 284 | \o not be empty
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| 285 | \o not exceed 255 characters in length
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| 286 | \o be composed of dot-separated string components that contain only ASCII letters, digits
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| 287 | and the underscore ("_") character
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| 288 | \o contain at least two such components
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| 289 | \endlist
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| 290 | */
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| 291 | bool isValidInterfaceName(const QString& ifaceName)
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| 292 | {
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| 293 | if (ifaceName.isEmpty() || ifaceName.length() > DBUS_MAXIMUM_NAME_LENGTH)
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| 294 | return false;
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| 295 |
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| 296 | QStringList parts = ifaceName.split(QLatin1Char('.'));
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| 297 | if (parts.count() < 2)
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| 298 | return false; // at least two parts
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| 299 |
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| 300 | for (int i = 0; i < parts.count(); ++i)
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| 301 | if (!isValidMemberName(parts.at(i)))
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| 302 | return false;
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| 303 |
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| 304 | return true;
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| 305 | }
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| 306 |
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| 307 | /*!
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| 308 | \fn bool QDBusUtil::isValidUniqueConnectionName(const QString &connName)
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| 309 | Returns true if \a connName is a valid unique connection name.
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| 310 |
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| 311 | Unique connection names start with a colon (":") and are followed by a list of dot-separated
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| 312 | components composed of ASCII letters, digits, the hyphen or the underscore ("_") character.
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| 313 | */
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| 314 | bool isValidUniqueConnectionName(const QString &connName)
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| 315 | {
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| 316 | if (connName.isEmpty() || connName.length() > DBUS_MAXIMUM_NAME_LENGTH ||
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| 317 | !connName.startsWith(QLatin1Char(':')))
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| 318 | return false;
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| 319 |
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| 320 | QStringList parts = connName.mid(1).split(QLatin1Char('.'));
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| 321 | if (parts.count() < 1)
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| 322 | return false;
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| 323 |
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| 324 | for (int i = 0; i < parts.count(); ++i) {
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| 325 | const QString &part = parts.at(i);
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| 326 | if (part.isEmpty())
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| 327 | return false;
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| 328 |
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| 329 | const QChar* c = part.unicode();
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| 330 | for (int j = 0; j < part.length(); ++j)
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| 331 | if (!isValidCharacter(c[j]))
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| 332 | return false;
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| 333 | }
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| 334 |
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| 335 | return true;
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| 336 | }
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| 337 |
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| 338 | /*!
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| 339 | \fn bool QDBusUtil::isValidBusName(const QString &busName)
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| 340 | Returns true if \a busName is a valid bus name.
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| 341 |
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| 342 | A valid bus name is either a valid unique connection name or follows the rules:
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| 343 | \list
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| 344 | \o is not empty
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| 345 | \o does not exceed 255 characters in length
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| 346 | \o be composed of dot-separated string components that contain only ASCII letters, digits,
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| 347 | hyphens or underscores ("_"), but don't start with a digit
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| 348 | \o contains at least two such elements
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| 349 | \endlist
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| 350 |
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| 351 | \sa isValidUniqueConnectionName()
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| 352 | */
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| 353 | bool isValidBusName(const QString &busName)
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| 354 | {
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| 355 | if (busName.isEmpty() || busName.length() > DBUS_MAXIMUM_NAME_LENGTH)
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| 356 | return false;
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| 357 |
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| 358 | if (busName.startsWith(QLatin1Char(':')))
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| 359 | return isValidUniqueConnectionName(busName);
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| 360 |
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| 361 | QStringList parts = busName.split(QLatin1Char('.'));
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| 362 | if (parts.count() < 1)
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| 363 | return false;
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| 364 |
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| 365 | for (int i = 0; i < parts.count(); ++i) {
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| 366 | const QString &part = parts.at(i);
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| 367 | if (part.isEmpty())
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| 368 | return false;
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| 369 |
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| 370 | const QChar *c = part.unicode();
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| 371 | if (isValidNumber(c[0]))
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| 372 | return false;
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| 373 | for (int j = 0; j < part.length(); ++j)
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| 374 | if (!isValidCharacter(c[j]))
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| 375 | return false;
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| 376 | }
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| 377 |
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| 378 | return true;
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| 379 | }
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| 380 |
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| 381 | /*!
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| 382 | \fn bool QDBusUtil::isValidMemberName(const QString &memberName)
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| 383 | Returns true if \a memberName is a valid member name. A valid member name does not exceed
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| 384 | 255 characters in length, is not empty, is composed only of ASCII letters, digits and
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| 385 | underscores, but does not start with a digit.
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| 386 | */
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| 387 | bool isValidMemberName(const QString &memberName)
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| 388 | {
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| 389 | if (memberName.isEmpty() || memberName.length() > DBUS_MAXIMUM_NAME_LENGTH)
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| 390 | return false;
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| 391 |
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| 392 | const QChar* c = memberName.unicode();
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| 393 | if (isValidNumber(c[0]))
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| 394 | return false;
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| 395 | for (int j = 0; j < memberName.length(); ++j)
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| 396 | if (!isValidCharacterNoDash(c[j]))
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| 397 | return false;
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| 398 | return true;
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| 399 | }
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| 400 |
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| 401 | /*!
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| 402 | \fn bool QDBusUtil::isValidErrorName(const QString &errorName)
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| 403 | Returns true if \a errorName is a valid error name. Valid error names are valid interface
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| 404 | names and vice-versa, so this function is actually an alias for isValidInterfaceName.
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| 405 | */
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| 406 | bool isValidErrorName(const QString &errorName)
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| 407 | {
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| 408 | return isValidInterfaceName(errorName);
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| 409 | }
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| 410 |
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| 411 | /*!
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| 412 | \fn bool QDBusUtil::isValidObjectPath(const QString &path)
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| 413 | Returns true if \a path is valid object path.
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| 414 |
|
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| 415 | Valid object paths follow the rules:
|
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| 416 | \list
|
|---|
| 417 | \o start with the slash character ("/")
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| 418 | \o do not end in a slash, unless the path is just the initial slash
|
|---|
| 419 | \o do not contain any two slashes in sequence
|
|---|
| 420 | \o contain slash-separated parts, each of which is composed of ASCII letters, digits and
|
|---|
| 421 | underscores ("_")
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|---|
| 422 | \endlist
|
|---|
| 423 | */
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|---|
| 424 | bool isValidObjectPath(const QString &path)
|
|---|
| 425 | {
|
|---|
| 426 | if (path == QLatin1String("/"))
|
|---|
| 427 | return true;
|
|---|
| 428 |
|
|---|
| 429 | if (!path.startsWith(QLatin1Char('/')) || path.indexOf(QLatin1String("//")) != -1 ||
|
|---|
| 430 | path.endsWith(QLatin1Char('/')))
|
|---|
| 431 | return false;
|
|---|
| 432 |
|
|---|
| 433 | QStringList parts = path.split(QLatin1Char('/'));
|
|---|
| 434 | Q_ASSERT(parts.count() >= 1);
|
|---|
| 435 | parts.removeFirst(); // it starts with /, so we get an empty first part
|
|---|
| 436 |
|
|---|
| 437 | for (int i = 0; i < parts.count(); ++i)
|
|---|
| 438 | if (!isValidPartOfObjectPath(parts.at(i)))
|
|---|
| 439 | return false;
|
|---|
| 440 |
|
|---|
| 441 | return true;
|
|---|
| 442 | }
|
|---|
| 443 |
|
|---|
| 444 | /*!
|
|---|
| 445 | \fn bool QDBusUtil::isValidSignature(const QString &signature)
|
|---|
| 446 | Returns true if \a signature is a valid D-Bus type signature for one or more types.
|
|---|
| 447 | This function returns true if it can all of \a signature into valid, individual types and no
|
|---|
| 448 | characters remain in \a signature.
|
|---|
| 449 |
|
|---|
| 450 | \sa isValidSingleSignature()
|
|---|
| 451 | */
|
|---|
| 452 | bool isValidSignature(const QString &signature)
|
|---|
| 453 | {
|
|---|
| 454 | return q_dbus_signature_validate(signature.toUtf8(), 0);
|
|---|
| 455 | }
|
|---|
| 456 |
|
|---|
| 457 | /*!
|
|---|
| 458 | \fn bool QDBusUtil::isValidSingleSignature(const QString &signature)
|
|---|
| 459 | Returns true if \a signature is a valid D-Bus type signature for exactly one full type. This
|
|---|
| 460 | function tries to convert the type signature into a D-Bus type and, if it succeeds and no
|
|---|
| 461 | characters remain in the signature, it returns true.
|
|---|
| 462 | */
|
|---|
| 463 | bool isValidSingleSignature(const QString &signature)
|
|---|
| 464 | {
|
|---|
| 465 | return q_dbus_signature_validate_single(signature.toUtf8(), 0);
|
|---|
| 466 | }
|
|---|
| 467 |
|
|---|
| 468 | } // namespace QDBusUtil
|
|---|
| 469 |
|
|---|
| 470 | QT_END_NAMESPACE
|
|---|
| 471 |
|
|---|
| 472 | #endif // QT_NO_DBUS
|
|---|
