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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 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 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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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 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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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 <string.h> |
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43 |
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44 #include <QtCore/qcoreapplication.h> |
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45 #include <QtCore/qvariant.h> |
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46 #include <QtCore/qmetaobject.h> |
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47 |
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48 #include "qdbusutil_p.h" |
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49 #include "qdbusconnection_p.h" |
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50 #include "qdbusmetatype_p.h" |
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51 #include "qdbusabstractadaptor_p.h" // for QCLASSINFO_DBUS_* |
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52 |
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53 QT_BEGIN_NAMESPACE |
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54 |
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55 bool qDBusCheckAsyncTag(const char *tag) |
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56 { |
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57 static const char noReplyTag[] = "Q_NOREPLY"; |
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58 if (!tag || !*tag) |
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59 return false; |
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60 |
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61 const char *p = strstr(tag, noReplyTag); |
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62 if (p != NULL && |
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63 (p == tag || *(p-1) == ' ') && |
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64 (p[sizeof noReplyTag - 1] == '\0' || p[sizeof noReplyTag - 1] == ' ')) |
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65 return true; |
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66 |
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67 return false; |
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68 } |
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69 |
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70 int qDBusNameToTypeId(const char *name) |
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71 { |
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72 int id = static_cast<int>( QVariant::nameToType(name) ); |
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73 if (id == QVariant::UserType) |
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74 id = QMetaType::type(name); |
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75 return id; |
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76 } |
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77 |
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78 QString qDBusInterfaceFromMetaObject(const QMetaObject *mo) |
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79 { |
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80 QString interface; |
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81 |
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82 int idx = mo->indexOfClassInfo(QCLASSINFO_DBUS_INTERFACE); |
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83 if (idx >= mo->classInfoOffset()) { |
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84 interface = QLatin1String(mo->classInfo(idx).value()); |
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85 } else { |
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86 interface = QLatin1String(mo->className()); |
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87 interface.replace(QLatin1String("::"), QLatin1String(".")); |
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88 |
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89 if (interface.startsWith(QLatin1String("QDBus"))) { |
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90 interface.prepend(QLatin1String("com.trolltech.QtDBus.")); |
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91 } else if (interface.startsWith(QLatin1Char('Q')) && |
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92 interface.length() >= 2 && interface.at(1).isUpper()) { |
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93 // assume it's Qt |
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94 interface.prepend(QLatin1String("com.trolltech.Qt.")); |
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95 } else if (!QCoreApplication::instance()|| |
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96 QCoreApplication::instance()->applicationName().isEmpty()) { |
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97 interface.prepend(QLatin1String("local.")); |
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98 } else { |
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99 interface.prepend(QLatin1Char('.')).prepend(QCoreApplication::instance()->applicationName()); |
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100 QStringList domainName = |
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101 QCoreApplication::instance()->organizationDomain().split(QLatin1Char('.'), |
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102 QString::SkipEmptyParts); |
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103 if (domainName.isEmpty()) |
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104 interface.prepend(QLatin1String("local.")); |
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105 else |
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106 for (int i = 0; i < domainName.count(); ++i) |
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107 interface.prepend(QLatin1Char('.')).prepend(domainName.at(i)); |
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108 } |
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109 } |
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110 |
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111 return interface; |
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112 } |
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113 |
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114 bool qDBusInterfaceInObject(QObject *obj, const QString &interface_name) |
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115 { |
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116 const QMetaObject *mo = obj->metaObject(); |
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117 for ( ; mo != &QObject::staticMetaObject; mo = mo->superClass()) |
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118 if (interface_name == qDBusInterfaceFromMetaObject(mo)) |
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119 return true; |
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120 return false; |
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121 } |
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122 |
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123 // calculates the metatypes for the method |
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124 // the slot must have the parameters in the following form: |
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125 // - zero or more value or const-ref parameters of any kind |
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126 // - zero or one const ref of QDBusMessage |
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127 // - zero or more non-const ref parameters |
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128 // No parameter may be a template. |
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129 // this function returns -1 if the parameters don't match the above form |
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130 // this function returns the number of *input* parameters, including the QDBusMessage one if any |
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131 // this function does not check the return type, so metaTypes[0] is always 0 and always present |
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132 // metaTypes.count() >= retval + 1 in all cases |
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133 // |
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134 // sig must be the normalised signature for the method |
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135 int qDBusParametersForMethod(const QMetaMethod &mm, QList<int>& metaTypes) |
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136 { |
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137 QDBusMetaTypeId::init(); |
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138 |
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139 QList<QByteArray> parameterTypes = mm.parameterTypes(); |
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140 metaTypes.clear(); |
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141 |
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142 metaTypes.append(0); // return type |
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143 int inputCount = 0; |
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144 bool seenMessage = false; |
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145 QList<QByteArray>::ConstIterator it = parameterTypes.constBegin(); |
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146 QList<QByteArray>::ConstIterator end = parameterTypes.constEnd(); |
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147 for ( ; it != end; ++it) { |
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148 const QByteArray &type = *it; |
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149 if (type.endsWith('*')) { |
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150 //qWarning("Could not parse the method '%s'", mm.signature()); |
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151 // pointer? |
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152 return -1; |
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153 } |
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154 |
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155 if (type.endsWith('&')) { |
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156 QByteArray basictype = type; |
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157 basictype.truncate(type.length() - 1); |
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158 |
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159 int id = qDBusNameToTypeId(basictype); |
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160 if (id == 0) { |
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161 //qWarning("Could not parse the method '%s'", mm.signature()); |
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162 // invalid type in method parameter list |
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163 return -1; |
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164 } else if (QDBusMetaType::typeToSignature(id) == 0) |
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165 return -1; |
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166 |
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167 metaTypes.append( id ); |
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168 seenMessage = true; // it cannot appear anymore anyways |
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169 continue; |
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170 } |
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171 |
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172 if (seenMessage) { // && !type.endsWith('&') |
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173 //qWarning("Could not parse the method '%s'", mm.signature()); |
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174 // non-output parameters after message or after output params |
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175 return -1; // not allowed |
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176 } |
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177 |
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178 int id = qDBusNameToTypeId(type); |
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179 if (id == 0) { |
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180 //qWarning("Could not parse the method '%s'", mm.signature()); |
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181 // invalid type in method parameter list |
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182 return -1; |
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183 } |
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184 |
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185 if (id == QDBusMetaTypeId::message) |
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186 seenMessage = true; |
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187 else if (QDBusMetaType::typeToSignature(id) == 0) |
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188 return -1; |
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189 |
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190 metaTypes.append(id); |
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191 ++inputCount; |
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192 } |
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193 |
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194 return inputCount; |
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195 } |
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196 |
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197 QT_END_NAMESPACE |