1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include <string.h>
#ifndef QT_BOOTSTRAPPED
#include <QtCore/qcoreapplication.h>
#include <QtCore/qlist.h>
#include <QtCore/qmetaobject.h>
#include <QtCore/qvariant.h>
#include <private/qurl_p.h>
#include "qdbusutil_p.h"
#include "qdbusconnection_p.h"
#include "qdbusabstractadaptor_p.h" // for QCLASSINFO_DBUS_*
#endif
#include "qdbusmetatype_p.h"
#ifndef QT_NO_DBUS
QT_BEGIN_NAMESPACE
using namespace Qt::StringLiterals;
bool qDBusCheckAsyncTag(const char *tag)
{
static const char noReplyTag[] = "Q_NOREPLY";
if (!tag || !*tag)
return false;
const char *p = strstr(tag, noReplyTag);
if (p != nullptr &&
(p == tag || *(p-1) == ' ') &&
(p[sizeof noReplyTag - 1] == '\0' || p[sizeof noReplyTag - 1] == ' '))
return true;
return false;
}
#ifndef QT_BOOTSTRAPPED
QString qDBusInterfaceFromMetaObject(const QMetaObject *mo)
{
QString interface;
int idx = mo->indexOfClassInfo(QCLASSINFO_DBUS_INTERFACE);
if (idx >= mo->classInfoOffset()) {
interface = QLatin1StringView(mo->classInfo(idx).value());
} else {
interface = QLatin1StringView(mo->className());
interface.replace("::"_L1, "."_L1);
if (interface.startsWith("QDBus"_L1)) {
interface.prepend("org.qtproject.QtDBus."_L1);
} else if (interface.startsWith(u'Q') &&
interface.size() >= 2 && interface.at(1).isUpper()) {
// assume it's Qt
interface.prepend("org.qtproject.Qt."_L1);
} else if (!QCoreApplication::instance()||
QCoreApplication::instance()->applicationName().isEmpty()) {
interface.prepend("local."_L1);
} else {
QString domainName = QCoreApplication::instance()->applicationName();
const QString organizationDomain = QCoreApplication::instance()->organizationDomain();
if (organizationDomain.isEmpty())
domainName.append(".local"_L1);
else
domainName.append(u'.').append(organizationDomain);
// Domain names used to produce interface names should be IDN-encoded.
QString encodedDomainName = qt_ACE_do(domainName, ToAceOnly, ForbidLeadingDot);
if (encodedDomainName.isEmpty()) {
interface.prepend("local."_L1);
return interface;
}
// Hyphens are not allowed in interface names and should be replaced
// by underscores.
encodedDomainName.replace(u'-', u'_');
auto nameParts = QStringView{ encodedDomainName }.split(u'.', Qt::SkipEmptyParts);
QString composedDomain;
// + 1 for additional dot, e.g. domainName equals "App.example.com",
// then composedDomain will be equal "com.example.App."
composedDomain.reserve(encodedDomainName.size() + nameParts.size() + 1);
for (auto it = nameParts.rbegin(), end = nameParts.rend(); it != end; ++it) {
// An interface name cannot start with a digit, and cannot
// contain digits immediately following a period. Prefix such
// digits with underscores.
if (it->first().isDigit())
composedDomain += u'_';
composedDomain += *it + u'.';
}
interface.prepend(composedDomain);
}
}
return interface;
}
bool qDBusInterfaceInObject(QObject *obj, const QString &interface_name)
{
const QMetaObject *mo = obj->metaObject();
for ( ; mo != &QObject::staticMetaObject; mo = mo->superClass())
if (interface_name == qDBusInterfaceFromMetaObject(mo))
return true;
return false;
}
// calculates the metatypes for the method
// the slot must have the parameters in the following form:
// - zero or more value or const-ref parameters of any kind
// - zero or one const ref of QDBusMessage
// - zero or more non-const ref parameters
// No parameter may be a template.
// this function returns -1 if the parameters don't match the above form
// this function returns the number of *input* parameters, including the QDBusMessage one if any
// this function does not check the return type, so metaTypes[0] is always 0 and always present
// metaTypes.count() >= retval + 1 in all cases
//
// sig must be the normalised signature for the method
int qDBusParametersForMethod(const QMetaMethod &mm, QList<QMetaType> &metaTypes, QString &errorMsg)
{
QList<QByteArray> parameterTypes;
parameterTypes.reserve(mm.parameterCount());
// Not using QMetaMethod::parameterTypes() since we call QMetaType::fromName below
// where we need any typedefs resolved already.
for (int i = 0; i < mm.parameterCount(); ++i) {
QByteArray typeName = mm.parameterMetaType(i).name();
if (typeName.isEmpty())
typeName = mm.parameterTypeName(i);
parameterTypes.append(typeName);
}
return qDBusParametersForMethod(parameterTypes, metaTypes, errorMsg);
}
#endif // QT_BOOTSTRAPPED
int qDBusParametersForMethod(const QList<QByteArray> ¶meterTypes, QList<QMetaType> &metaTypes,
QString &errorMsg)
{
QDBusMetaTypeId::init();
metaTypes.clear();
metaTypes.append(QMetaType()); // return type
int inputCount = 0;
bool seenMessage = false;
for (QByteArray type : parameterTypes) {
if (type.endsWith('*')) {
errorMsg = "Pointers are not supported: "_L1 + QLatin1StringView(type);
return -1;
}
if (type.endsWith('&')) {
QByteArray basictype = type;
basictype.truncate(type.size() - 1);
QMetaType id = QMetaType::fromName(basictype);
if (!id.isValid()) {
errorMsg = "Unregistered output type in parameter list: "_L1 + QLatin1StringView(type);
return -1;
} else if (QDBusMetaType::typeToSignature(id) == nullptr)
return -1;
metaTypes.append(id);
seenMessage = true; // it cannot appear anymore anyways
continue;
}
if (seenMessage) { // && !type.endsWith('&')
errorMsg = "Invalid method, non-output parameters after message or after output parameters: "_L1 + QLatin1StringView(type);
return -1; // not allowed
}
if (type.startsWith("QVector<"))
type = "QList<" + type.mid(sizeof("QVector<") - 1);
QMetaType id = QMetaType::fromName(type);
#ifdef QT_BOOTSTRAPPED
// in bootstrap mode QDBusMessage isn't included, thus we need to resolve it manually here
if (type == "QDBusMessage") {
id = QDBusMetaTypeId::message();
}
#endif
if (!id.isValid()) {
errorMsg = "Unregistered input type in parameter list: "_L1 + QLatin1StringView(type);
return -1;
}
if (id == QDBusMetaTypeId::message())
seenMessage = true;
else if (QDBusMetaType::typeToSignature(id) == nullptr) {
errorMsg = "Type not registered with QtDBus in parameter list: "_L1 + QLatin1StringView(type);
return -1;
}
metaTypes.append(id);
++inputCount;
}
return inputCount;
}
QT_END_NAMESPACE
#endif // QT_NO_DBUS
|
