KSaneCore

authentication.cpp
1/*
2 * SPDX-FileCopyrightText: 2010 Kare Sars <kare dot sars at iki dot fi>
3 * SPDX-FileCopyrightText: 2014 Gregor Mitsch : port to KDE5 frameworks
4 *
5 * SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
6 */
7
8#include "authentication.h"
9
10// Qt includes
11#include <QMutex>
12#include <QMutexLocker>
13#include <QList>
14
15#include <ksanecore_debug.h>
16
17namespace KSaneCore
18{
19
20static Authentication *s_instance = nullptr;
21Q_GLOBAL_STATIC(QMutex, s_mutex)
22
23struct Authentication::Private {
24 struct AuthStruct {
25 QString resource;
26 QString username;
27 QString password;
28 };
29
30 QList<AuthStruct> authList;
31};
32
33Authentication *Authentication::getInstance()
34{
35#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
36 QMutexLocker<QMutex> locker(s_mutex);
37#else
38 QMutexLocker locker(s_mutex);
39#endif
40
41 if (s_instance == nullptr) {
42 s_instance = new Authentication();
43 }
44 return s_instance;
45}
46
47Authentication::Authentication() : d(new Private) {}
48
49Authentication::~Authentication()
50{
51#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
52 QMutexLocker<QMutex> locker(s_mutex);
53#else
54 QMutexLocker locker(s_mutex);
55#endif
56 d->authList.clear();
57 delete d;
58}
59
60void Authentication::setDeviceAuth(const QString &resource, const QString &username, const QString &password)
61{
62 // This is a short list so we do not need a QMap...
63 int i;
64 for (i = 0; i < d->authList.size(); i++) {
65 if (resource == d->authList.at(i).resource) {
66 // update the existing node
67 d->authList[i].username = username;
68 d->authList[i].password = password;
69 break;
70 }
71 }
72 if (i == d->authList.size()) {
73 // Add a new list node
74 Private::AuthStruct tmp;
75 tmp.resource = resource;
76 tmp.username = username;
77 tmp.password = password;
78 d->authList << tmp;
79 }
80}
81
82void Authentication::clearDeviceAuth(const QString &resource)
83{
84 // This is a short list so we do not need a QMap...
85 for (int i = 0; i < d->authList.size(); i++) {
86 if (resource == d->authList.at(i).resource) {
87 d->authList.removeAt(i);
88 return;
89 }
90 }
91}
92
93/** static function called by sane_open to get authorization from user */
94void Authentication::authorization(SANE_String_Const resource, SANE_Char *username, SANE_Char *password)
95{
96 qCDebug(KSANECORE_LOG) << resource;
97 // This is vague in the standard... what can I find in the resource string?
98 // I have found that "resource contains the backend name + "$MD5$....."
99 // it does not contain unique identifiers like ":libusb:001:004"
100 // -> remove $MD5 and later before comparison...
101 QString res = QString::fromUtf8(resource);
102 int end = res.indexOf(QStringLiteral("$MD5$"));
103 res = res.left(end);
104 qCDebug(KSANECORE_LOG) << res;
105
106 const QList<Private::AuthStruct> list = getInstance()->d->authList;
107 for (const auto &authItem : list) {
108 qCDebug(KSANECORE_LOG) << res << authItem.resource;
109 if (authItem.resource.contains(res)) {
110 qstrncpy(username, authItem.username.toLocal8Bit().constData(), SANE_MAX_USERNAME_LEN);
111 qstrncpy(password, authItem.password.toLocal8Bit().constData(), SANE_MAX_PASSWORD_LEN);
112 break;
113 }
114 }
115}
116
117} // namespace KSaneCore
QString fromUtf8(QByteArrayView str)
qsizetype indexOf(QChar ch, qsizetype from, Qt::CaseSensitivity cs) const const
QString left(qsizetype n) const const
QString & removeAt(qsizetype pos)
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