| 1 | /**************************************************************************** | 
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| 2 | ** | 
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| 3 | ** Copyright (C) 2010 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 | QT_BEGIN_NAMESPACE | 
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| 51 |  | 
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| 52 | static inline bool isValidCharacterNoDash(const QChar &c) | 
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| 53 | { | 
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| 54 | register ushort u = c.unicode(); | 
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| 55 | return (u >= 'a' && u <= 'z') | 
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| 56 | || (u >= 'A' && u <= 'Z') | 
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| 57 | || (u >= '0' && u <= '9') | 
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| 58 | || (u == '_'); | 
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| 59 | } | 
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| 60 |  | 
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| 61 | static inline bool isValidCharacter(const QChar &c) | 
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| 62 | { | 
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| 63 | register ushort u = c.unicode(); | 
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| 64 | return (u >= 'a' && u <= 'z') | 
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| 65 | || (u >= 'A' && u <= 'Z') | 
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| 66 | || (u >= '0' && u <= '9') | 
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| 67 | || (u == '_') || (u == '-'); | 
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| 68 | } | 
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| 69 |  | 
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| 70 | static inline bool isValidNumber(const QChar &c) | 
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| 71 | { | 
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| 72 | register ushort u = c.unicode(); | 
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| 73 | return (u >= '0' && u <= '9'); | 
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| 74 | } | 
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| 75 |  | 
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| 76 | static bool argToString(const QDBusArgument &arg, QString &out); | 
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| 77 |  | 
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| 78 | static bool variantToString(const QVariant &arg, QString &out) | 
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| 79 | { | 
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| 80 | int argType = arg.userType(); | 
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| 81 |  | 
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| 82 | if (argType == QVariant::StringList) { | 
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| 83 | out += QLatin1Char('{'); | 
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| 84 | QStringList list = arg.toStringList(); | 
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| 85 | foreach (QString item, list) | 
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| 86 | out += QLatin1Char('\"') + item + QLatin1String("\", "); | 
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| 87 | if (!list.isEmpty()) | 
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| 88 | out.chop(2); | 
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| 89 | out += QLatin1Char('}'); | 
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| 90 | } else if (argType == QVariant::ByteArray) { | 
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| 91 | out += QLatin1Char('{'); | 
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| 92 | QByteArray list = arg.toByteArray(); | 
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| 93 | for (int i = 0; i < list.count(); ++i) { | 
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| 94 | out += QString::number(list.at(i)); | 
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| 95 | out += QLatin1String(", "); | 
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| 96 | } | 
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| 97 | if (!list.isEmpty()) | 
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| 98 | out.chop(2); | 
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| 99 | out += QLatin1Char('}'); | 
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| 100 | } else if (argType == QVariant::List) { | 
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| 101 | out += QLatin1Char('{'); | 
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| 102 | QList<QVariant> list = arg.toList(); | 
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| 103 | foreach (QVariant item, list) { | 
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| 104 | if (!variantToString(item, out)) | 
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| 105 | return false; | 
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| 106 | out += QLatin1String(", "); | 
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| 107 | } | 
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| 108 | if (!list.isEmpty()) | 
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| 109 | out.chop(2); | 
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| 110 | out += QLatin1Char('}'); | 
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| 111 | } else if (argType == QMetaType::Char || argType == QMetaType::Short || argType == QMetaType::Int | 
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| 112 | || argType == QMetaType::Long || argType == QMetaType::LongLong) { | 
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| 113 | out += QString::number(arg.toLongLong()); | 
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| 114 | } else if (argType == QMetaType::UChar || argType == QMetaType::UShort || argType == QMetaType::UInt | 
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| 115 | || argType == QMetaType::ULong || argType == QMetaType::ULongLong) { | 
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| 116 | out += QString::number(arg.toULongLong()); | 
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| 117 | } else if (argType == QMetaType::Double) { | 
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| 118 | out += QString::number(arg.toDouble()); | 
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| 119 | } else if (argType == QMetaType::Bool) { | 
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| 120 | out += QLatin1String(arg.toBool() ? "true" : "false"); | 
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| 121 | } else if (argType == qMetaTypeId<QDBusArgument>()) { | 
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| 122 | argToString(qvariant_cast<QDBusArgument>(arg), out); | 
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| 123 | } else if (argType == qMetaTypeId<QDBusObjectPath>()) { | 
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| 124 | const QString path = qvariant_cast<QDBusObjectPath>(arg).path(); | 
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| 125 | out += QLatin1String("[ObjectPath: "); | 
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| 126 | out += path; | 
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| 127 | out += QLatin1Char(']'); | 
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| 128 | } else if (argType == qMetaTypeId<QDBusSignature>()) { | 
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| 129 | out += QLatin1String("[Signature: ") + qvariant_cast<QDBusSignature>(arg).signature(); | 
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| 130 | out += QLatin1Char(']'); | 
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| 131 | } else if (argType == qMetaTypeId<QDBusVariant>()) { | 
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| 132 | const QVariant v = qvariant_cast<QDBusVariant>(arg).variant(); | 
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| 133 | out += QLatin1String("[Variant"); | 
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| 134 | int vUserType = v.userType(); | 
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| 135 | if (vUserType != qMetaTypeId<QDBusVariant>() | 
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| 136 | && vUserType != qMetaTypeId<QDBusSignature>() | 
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| 137 | && vUserType != qMetaTypeId<QDBusObjectPath>() | 
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| 138 | && vUserType != qMetaTypeId<QDBusArgument>()) | 
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| 139 | out += QLatin1Char('(') + QLatin1String(v.typeName()) + QLatin1Char(')'); | 
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| 140 | out += QLatin1String(": "); | 
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| 141 | if (!variantToString(v, out)) | 
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| 142 | return false; | 
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| 143 | out += QLatin1Char(']'); | 
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| 144 | } else if (arg.canConvert(QVariant::String)) { | 
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| 145 | out += QLatin1Char('\"') + arg.toString() + QLatin1Char('\"'); | 
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| 146 | } else { | 
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| 147 | out += QLatin1Char('['); | 
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| 148 | out += QLatin1String(arg.typeName()); | 
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| 149 | out += QLatin1Char(']'); | 
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| 150 | } | 
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| 151 |  | 
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| 152 | return true; | 
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| 153 | } | 
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| 154 |  | 
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| 155 | bool argToString(const QDBusArgument &busArg, QString &out) | 
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| 156 | { | 
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| 157 | QString busSig = busArg.currentSignature(); | 
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| 158 | bool doIterate = false; | 
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| 159 | QDBusArgument::ElementType elementType = busArg.currentType(); | 
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| 160 |  | 
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| 161 | if (elementType != QDBusArgument::BasicType && elementType != QDBusArgument::VariantType | 
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| 162 | && elementType != QDBusArgument::MapEntryType) | 
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| 163 | out += QLatin1String("[Argument: ") + busSig + QLatin1Char(' '); | 
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| 164 |  | 
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| 165 | switch (elementType) { | 
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| 166 | case QDBusArgument::BasicType: | 
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| 167 | case QDBusArgument::VariantType: | 
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| 168 | if (!variantToString(busArg.asVariant(), out)) | 
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| 169 | return false; | 
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| 170 | break; | 
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| 171 | case QDBusArgument::StructureType: | 
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| 172 | busArg.beginStructure(); | 
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| 173 | doIterate = true; | 
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| 174 | break; | 
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| 175 | case QDBusArgument::ArrayType: | 
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| 176 | busArg.beginArray(); | 
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| 177 | out += QLatin1Char('{'); | 
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| 178 | doIterate = true; | 
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| 179 | break; | 
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| 180 | case QDBusArgument::MapType: | 
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| 181 | busArg.beginMap(); | 
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| 182 | out += QLatin1Char('{'); | 
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| 183 | doIterate = true; | 
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| 184 | break; | 
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| 185 | case QDBusArgument::MapEntryType: | 
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| 186 | busArg.beginMapEntry(); | 
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| 187 | if (!variantToString(busArg.asVariant(), out)) | 
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| 188 | return false; | 
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| 189 | out += QLatin1String(" = "); | 
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| 190 | if (!argToString(busArg, out)) | 
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| 191 | return false; | 
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| 192 | busArg.endMapEntry(); | 
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| 193 | break; | 
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| 194 | case QDBusArgument::UnknownType: | 
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| 195 | default: | 
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| 196 | out += QLatin1String("<ERROR - Unknown Type>"); | 
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| 197 | return false; | 
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| 198 | } | 
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| 199 | if (doIterate && !busArg.atEnd()) { | 
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| 200 | while (!busArg.atEnd()) { | 
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| 201 | if (!argToString(busArg, out)) | 
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| 202 | return false; | 
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| 203 | out += QLatin1String(", "); | 
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| 204 | } | 
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| 205 | out.chop(2); | 
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| 206 | } | 
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| 207 | switch (elementType) { | 
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| 208 | case QDBusArgument::BasicType: | 
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| 209 | case QDBusArgument::VariantType: | 
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| 210 | case QDBusArgument::UnknownType: | 
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| 211 | case QDBusArgument::MapEntryType: | 
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| 212 | // nothing to do | 
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| 213 | break; | 
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| 214 | case QDBusArgument::StructureType: | 
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| 215 | busArg.endStructure(); | 
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| 216 | break; | 
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| 217 | case QDBusArgument::ArrayType: | 
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| 218 | out += QLatin1Char('}'); | 
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| 219 | busArg.endArray(); | 
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| 220 | break; | 
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| 221 | case QDBusArgument::MapType: | 
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| 222 | out += QLatin1Char('}'); | 
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| 223 | busArg.endMap(); | 
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| 224 | break; | 
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| 225 | } | 
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| 226 |  | 
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| 227 | if (elementType != QDBusArgument::BasicType && elementType != QDBusArgument::VariantType | 
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| 228 | && elementType != QDBusArgument::MapEntryType) | 
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| 229 | out += QLatin1Char(']'); | 
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| 230 |  | 
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| 231 | return true; | 
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| 232 | } | 
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| 233 |  | 
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| 234 | /*! | 
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| 235 | \namespace QDBusUtil | 
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| 236 | \inmodule QtDBus | 
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| 237 | \internal | 
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| 238 |  | 
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| 239 | \brief The QDBusUtil namespace contains a few functions that are of general use when | 
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| 240 | dealing with D-Bus strings. | 
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| 241 | */ | 
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| 242 | namespace QDBusUtil | 
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| 243 | { | 
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| 244 | /*! | 
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| 245 | \internal | 
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| 246 | \since 4.5 | 
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| 247 | Dumps the contents of a QtDBus argument from \a arg into a string. | 
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| 248 | */ | 
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| 249 | QString argumentToString(const QVariant &arg) | 
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| 250 | { | 
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| 251 | QString out; | 
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| 252 |  | 
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| 253 | variantToString(arg, out); | 
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| 254 |  | 
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| 255 | return out; | 
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| 256 | } | 
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| 257 |  | 
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| 258 | /*! | 
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| 259 | \internal | 
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| 260 | \fn bool QDBusUtil::isValidPartOfObjectPath(const QString &part) | 
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| 261 | See QDBusUtil::isValidObjectPath | 
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| 262 | */ | 
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| 263 | bool isValidPartOfObjectPath(const QString &part) | 
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| 264 | { | 
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| 265 | if (part.isEmpty()) | 
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| 266 | return false;       // can't be valid if it's empty | 
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| 267 |  | 
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| 268 | const QChar *c = part.unicode(); | 
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| 269 | for (int i = 0; i < part.length(); ++i) | 
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| 270 | if (!isValidCharacterNoDash(c[i])) | 
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| 271 | return false; | 
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| 272 |  | 
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| 273 | return true; | 
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| 274 | } | 
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| 275 |  | 
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| 276 | /*! | 
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| 277 | \fn bool QDBusUtil::isValidInterfaceName(const QString &ifaceName) | 
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| 278 | Returns true if this is \a ifaceName is a valid interface name. | 
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| 279 |  | 
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| 280 | Valid interface names must: | 
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| 281 | \list | 
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| 282 | \o not be empty | 
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| 283 | \o not exceed 255 characters in length | 
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| 284 | \o be composed of dot-separated string components that contain only ASCII letters, digits | 
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| 285 | and the underscore ("_") character | 
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| 286 | \o contain at least two such components | 
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| 287 | \endlist | 
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| 288 | */ | 
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| 289 | bool isValidInterfaceName(const QString& ifaceName) | 
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| 290 | { | 
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| 291 | if (ifaceName.isEmpty() || ifaceName.length() > DBUS_MAXIMUM_NAME_LENGTH) | 
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| 292 | return false; | 
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| 293 |  | 
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| 294 | QStringList parts = ifaceName.split(QLatin1Char('.')); | 
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| 295 | if (parts.count() < 2) | 
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| 296 | return false;           // at least two parts | 
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| 297 |  | 
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| 298 | for (int i = 0; i < parts.count(); ++i) | 
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| 299 | if (!isValidMemberName(parts.at(i))) | 
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| 300 | return false; | 
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| 301 |  | 
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| 302 | return true; | 
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| 303 | } | 
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| 304 |  | 
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| 305 | /*! | 
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| 306 | \fn bool QDBusUtil::isValidUniqueConnectionName(const QString &connName) | 
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| 307 | Returns true if \a connName is a valid unique connection name. | 
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| 308 |  | 
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| 309 | Unique connection names start with a colon (":") and are followed by a list of dot-separated | 
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| 310 | components composed of ASCII letters, digits, the hypen or the underscore ("_") character. | 
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| 311 | */ | 
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| 312 | bool isValidUniqueConnectionName(const QString &connName) | 
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| 313 | { | 
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| 314 | if (connName.isEmpty() || connName.length() > DBUS_MAXIMUM_NAME_LENGTH || | 
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| 315 | !connName.startsWith(QLatin1Char(':'))) | 
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| 316 | return false; | 
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| 317 |  | 
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| 318 | QStringList parts = connName.mid(1).split(QLatin1Char('.')); | 
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| 319 | if (parts.count() < 1) | 
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| 320 | return false; | 
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| 321 |  | 
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| 322 | for (int i = 0; i < parts.count(); ++i) { | 
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| 323 | const QString &part = parts.at(i); | 
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| 324 | if (part.isEmpty()) | 
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| 325 | return false; | 
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| 326 |  | 
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| 327 | const QChar* c = part.unicode(); | 
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| 328 | for (int j = 0; j < part.length(); ++j) | 
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| 329 | if (!isValidCharacter(c[j])) | 
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| 330 | return false; | 
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| 331 | } | 
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| 332 |  | 
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| 333 | return true; | 
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| 334 | } | 
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| 335 |  | 
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| 336 | /*! | 
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| 337 | \fn bool QDBusUtil::isValidBusName(const QString &busName) | 
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| 338 | Returns true if \a busName is a valid bus name. | 
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| 339 |  | 
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| 340 | A valid bus name is either a valid unique connection name or follows the rules: | 
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| 341 | \list | 
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| 342 | \o is not empty | 
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| 343 | \o does not exceed 255 characters in length | 
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| 344 | \o be composed of dot-separated string components that contain only ASCII letters, digits, | 
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| 345 | hyphens or underscores ("_"), but don't start with a digit | 
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| 346 | \o contains at least two such elements | 
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| 347 | \endlist | 
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| 348 |  | 
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| 349 | \sa isValidUniqueConnectionName() | 
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| 350 | */ | 
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| 351 | bool isValidBusName(const QString &busName) | 
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| 352 | { | 
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| 353 | if (busName.isEmpty() || busName.length() > DBUS_MAXIMUM_NAME_LENGTH) | 
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| 354 | return false; | 
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| 355 |  | 
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| 356 | if (busName.startsWith(QLatin1Char(':'))) | 
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| 357 | return isValidUniqueConnectionName(busName); | 
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| 358 |  | 
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| 359 | QStringList parts = busName.split(QLatin1Char('.')); | 
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| 360 | if (parts.count() < 1) | 
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| 361 | return false; | 
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| 362 |  | 
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| 363 | for (int i = 0; i < parts.count(); ++i) { | 
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| 364 | const QString &part = parts.at(i); | 
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| 365 | if (part.isEmpty()) | 
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| 366 | return false; | 
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| 367 |  | 
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| 368 | const QChar *c = part.unicode(); | 
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| 369 | if (isValidNumber(c[0])) | 
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| 370 | return false; | 
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| 371 | for (int j = 0; j < part.length(); ++j) | 
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| 372 | if (!isValidCharacter(c[j])) | 
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| 373 | return false; | 
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| 374 | } | 
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| 375 |  | 
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| 376 | return true; | 
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| 377 | } | 
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| 378 |  | 
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| 379 | /*! | 
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| 380 | \fn bool QDBusUtil::isValidMemberName(const QString &memberName) | 
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| 381 | Returns true if \a memberName is a valid member name. A valid member name does not exceed | 
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| 382 | 255 characters in length, is not empty, is composed only of ASCII letters, digits and | 
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| 383 | underscores, but does not start with a digit. | 
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| 384 | */ | 
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| 385 | bool isValidMemberName(const QString &memberName) | 
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| 386 | { | 
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| 387 | if (memberName.isEmpty() || memberName.length() > DBUS_MAXIMUM_NAME_LENGTH) | 
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| 388 | return false; | 
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| 389 |  | 
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| 390 | const QChar* c = memberName.unicode(); | 
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| 391 | if (isValidNumber(c[0])) | 
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| 392 | return false; | 
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| 393 | for (int j = 0; j < memberName.length(); ++j) | 
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| 394 | if (!isValidCharacterNoDash(c[j])) | 
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| 395 | return false; | 
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| 396 | return true; | 
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| 397 | } | 
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| 398 |  | 
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| 399 | /*! | 
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| 400 | \fn bool QDBusUtil::isValidErrorName(const QString &errorName) | 
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| 401 | Returns true if \a errorName is a valid error name. Valid error names are valid interface | 
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| 402 | names and vice-versa, so this function is actually an alias for isValidInterfaceName. | 
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| 403 | */ | 
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| 404 | bool isValidErrorName(const QString &errorName) | 
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| 405 | { | 
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| 406 | return isValidInterfaceName(errorName); | 
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| 407 | } | 
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| 408 |  | 
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| 409 | /*! | 
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| 410 | \fn bool QDBusUtil::isValidObjectPath(const QString &path) | 
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| 411 | Returns true if \a path is valid object path. | 
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| 412 |  | 
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| 413 | Valid object paths follow the rules: | 
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| 414 | \list | 
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| 415 | \o start with the slash character ("/") | 
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| 416 | \o do not end in a slash, unless the path is just the initial slash | 
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| 417 | \o do not contain any two slashes in sequence | 
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| 418 | \o contain slash-separated parts, each of which is composed of ASCII letters, digits and | 
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| 419 | underscores ("_") | 
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| 420 | \endlist | 
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| 421 | */ | 
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| 422 | bool isValidObjectPath(const QString &path) | 
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| 423 | { | 
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| 424 | if (path == QLatin1String("/")) | 
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| 425 | return true; | 
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| 426 |  | 
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| 427 | if (!path.startsWith(QLatin1Char('/')) || path.indexOf(QLatin1String("//")) != -1 || | 
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| 428 | path.endsWith(QLatin1Char('/'))) | 
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| 429 | return false; | 
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| 430 |  | 
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| 431 | QStringList parts = path.split(QLatin1Char('/')); | 
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| 432 | Q_ASSERT(parts.count() >= 1); | 
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| 433 | parts.removeFirst();    // it starts with /, so we get an empty first part | 
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| 434 |  | 
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| 435 | for (int i = 0; i < parts.count(); ++i) | 
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| 436 | if (!isValidPartOfObjectPath(parts.at(i))) | 
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| 437 | return false; | 
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| 438 |  | 
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| 439 | return true; | 
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| 440 | } | 
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| 441 |  | 
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| 442 | /*! | 
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| 443 | \fn bool QDBusUtil::isValidSignature(const QString &signature) | 
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| 444 | Returns true if \a signature is a valid D-Bus type signature for one or more types. | 
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| 445 | This function returns true if it can all of \a signature into valid, individual types and no | 
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| 446 | characters remain in \a signature. | 
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| 447 |  | 
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| 448 | \sa isValidSingleSignature() | 
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| 449 | */ | 
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| 450 | bool isValidSignature(const QString &signature) | 
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| 451 | { | 
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| 452 | return q_dbus_signature_validate(signature.toUtf8(), 0); | 
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| 453 | } | 
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| 454 |  | 
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| 455 | /*! | 
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| 456 | \fn bool QDBusUtil::isValidSingleSignature(const QString &signature) | 
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| 457 | Returns true if \a signature is a valid D-Bus type signature for exactly one full type. This | 
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| 458 | function tries to convert the type signature into a D-Bus type and, if it succeeds and no | 
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| 459 | characters remain in the signature, it returns true. | 
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| 460 | */ | 
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| 461 | bool isValidSingleSignature(const QString &signature) | 
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| 462 | { | 
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| 463 | return q_dbus_signature_validate_single(signature.toUtf8(), 0); | 
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| 464 | } | 
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| 465 |  | 
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| 466 | } // namespace QDBusUtil | 
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| 467 |  | 
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| 468 | QT_END_NAMESPACE | 
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