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
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
|
#include "slxbrowser.h"
#include "webview.h"
#include "nam.h"
#include <QtWebKitWidgets>
#include <QWebPage>
#include <QNetworkReply>
#include <QSslConfiguration>
#include <QProgressBar>
#include <QDateTime>
static QRegularExpression urlListToRegExp(const QStringList &list);
SlxBrowser::SlxBrowser(BrowserSettings settings)
: QMainWindow(nullptr),
_settings(settings),
_unsupportedUri(false),
_blockedSite(false),
_lastPageLoad(0),
_activity(false),
_lastActivity(0),
_pageValid(false)
{
_settings.reloadInterval *= 1000;
if (_settings.fullscreen) {
this->showFullScreen();
this->setWindowFlags(windowFlags() | Qt::WindowStaysOnTopHint);
} else if (_settings.maximized) {
this->showMaximized();
}
//QWebSettings::globalSettings()->setAttribute(QWebSettings::DeveloperExtrasEnabled, true);
QWidget *w = new QWidget;
QLayout *l = new QVBoxLayout;
_browser = new WebView;
_progress = new QProgressBar;
_progress->hide();
l->addWidget(_browser);
l->addWidget(_progress);
l->setMargin(0);
l->setSpacing(0);
l->setContentsMargins(0,0,0,0);
w->setContentsMargins(0,0,0,0);
w->setLayout(l);
this->setCentralWidget(w);
_reset.setSingleShot(true);
connect(&_reset, &QTimer::timeout, this, &SlxBrowser::reloadInitial);
connect(_browser, &WebView::loadStarted, this, &SlxBrowser::loadStarted);
connect(_browser, &WebView::loadFinished, this, &SlxBrowser::loadFinished);
connect(_browser, &WebView::loadProgress, this, &SlxBrowser::loadProgress);
//
QWebPage *page = _browser->page();
QNetworkAccessManager *nam;
if (_settings.urlList.isEmpty()) {
nam = new QNetworkAccessManager(this);
} else {
if (_settings.isWhitelist) {
// Just to be safe
_settings.urlList << _settings.url;
}
nam = new SlxNetworkAccessManager(urlListToRegExp(_settings.urlList), _settings.isWhitelist);
}
connect(nam, &QNetworkAccessManager::sslErrors, this, &SlxBrowser::sslErrors);
connect(nam, &QNetworkAccessManager::finished, this, &SlxBrowser::requestFinished);
page->setNetworkAccessManager(nam);
page->mainFrame()->load(_settings.url);
//
_browser->show();
}
SlxBrowser::~SlxBrowser()
{
}
void SlxBrowser::loadStarted()
{
_pageValid = false;
_reset.stop();
if (_settings.reloadInterval > 0) {
_reset.start(_settings.reloadInterval + 5000);
}
_normalError.clear();
_sslErrors.clear();
_progress->setValue(0);
_progress->show();
}
void SlxBrowser::maybeTriggerBack()
{
auto elems = _browser->page()->mainFrame()->documentElement().findAll("*");
if (elems.count() > 10)
return;
QStringList want{{ "HEAD", "TITLE", "H1", "HR", "A", "PRE" }};
for (auto x : elems) {
if (x.tagName() != want.first())
continue;
want.pop_front();
if (want.isEmpty())
break;
}
if (want.isEmpty()) {
// Was probably a JS redirect, go back before displaying the error
_browser->page()->triggerAction(QWebPage::Back);
}
}
void SlxBrowser::loadFinished(bool ok)
{
_progress->hide();
bool abortedDl = _browser->wasAbortedDownload();
if (!abortedDl && !ok) {
if (_unsupportedUri) {
QMessageBox::warning(this, QString::fromUtf8("Denied"),
QString::fromUtf8("This URL type is not supported.\n\n"
"Diese Art Link wird nicht unterstützt.\n\n"
"(z.B. Mail)"));
} else if (_blockedSite) {
maybeTriggerBack();
QTimer::singleShot(10, [=]() {
maybeTriggerBack();
QMessageBox::warning(this, QString::fromUtf8("Denied"),
QString::fromUtf8("Target URL not allowed.\n\n"
"Dieser Link führt auf eine nicht erlaubte Seite."));
});
} else {
_browser->page()->mainFrame()->setHtml("<html><body style='background:blue;color:white'><br><br>"
"<center><h1>Page Load Error</h1><pre id='content'></pre><br>"
"<p><a href='#' onclick='javascript:window.history.back()'>Back</a></p>"
"</center></body></html>");
QWebElement el = _browser->page()->mainFrame()->documentElement().findFirst("#content");
QString str;
if (!_sslErrors.empty()) {
str.append("SSL Errors:\n");
for (QSslError err : _sslErrors) {
str.append(err.errorString());
str.append('\n');
}
} else if (_normalError.length() != 0) {
str.append("Load Error:\n");
str.append(_normalError);
} else {
str.append("Unknown Error");
}
str.append("\n\n\n\n" + QDateTime::currentDateTime().toString());
el.setPlainText(str);
_pageValid = false;
if (_settings.reloadInterval > 0) {
_reset.start(qMin(30000, _settings.reloadInterval));
} else {
_reset.start(30000);
}
}
_sslErrors.clear();
_normalError.clear();
} else {
_pageValid = true;
if (_settings.reloadInterval > 0) {
_reset.start(qMax(_settings.reloadInterval / 20, 1000));
}
}
_unsupportedUri = false;
_blockedSite = false;
_lastPageLoad = QDateTime::currentMSecsSinceEpoch();;
}
void SlxBrowser::loadProgress(int progress)
{
_progress->setValue(progress);
}
void SlxBrowser::sslErrors(QNetworkReply* reply, const QList<QSslError>& errors)
{
if (_settings.ignoreSslErrors) {
reply->ignoreSslErrors();
return;
}
_sslErrors.append(errors);
}
void SlxBrowser::requestFinished(QNetworkReply *reply)
{
if (reply->error() == QNetworkReply::ProtocolUnknownError) {
_unsupportedUri = true;
} else if (reply->error() == QNetworkReply::UnknownNetworkError) {
_blockedSite = true;
} else {
//qDebug() << reply->error();
_normalError = reply->errorString();
}
}
void SlxBrowser::reloadInitial()
{
if (_pageValid) {
if (_activity) {
_lastActivity = QDateTime::currentMSecsSinceEpoch();
_activity = false;
_reset.start(qMax(_settings.reloadInterval / 20, 1000));
return;
}
qint64 now = QDateTime::currentMSecsSinceEpoch();
if (now - qMax(_lastActivity, _lastPageLoad) > _settings.reloadInterval) {
_browser->page()->mainFrame()->load(_settings.url);
} else {
_reset.start(qMax(_settings.reloadInterval / 20, 1000));
}
} else {
_browser->page()->mainFrame()->load(_settings.url);
}
}
static QRegularExpression urlListToRegExp(const QStringList &list)
{
// We search in the escaped string, so actually look for \*\* and \*
// Capture char before that because it must not be another backslash, as that
// means the star was already escaped in the list.
// Since these are C strings there are some additional backslashes here.
static const QRegularExpression STARSTAR("(^|[^\\\\])\\\\\\*\\\\\\*");
static const QRegularExpression STAR("(^|[^\\\\])\\\\\\*");
static const QRegularExpression QUEST("(^|[^\\\\])\\\\\\?");
static const QString STARSTAR_REP("\\1.*");
static const QString STAR_REP("\\1[^/]*");
static const QString QUEST_REP("\\1.?");
QStringList regexes; // All my regex's live in Regtexas
for (const QString &str : list) {
QString mangled;
if (str.contains(QLatin1String("//"))) {
mangled = str;
} else if (str.contains(QLatin1Char('/')) || str.contains(QLatin1String("**"))) {
mangled = "*//" + str;
} else {
mangled = "*//" + str + "/**";
}
mangled = QRegularExpression::escape(mangled);
mangled = mangled.replace(STARSTAR, STARSTAR_REP).replace(STAR, STAR_REP)
.replace(QUEST, QUEST_REP);
regexes << mangled;
}
qDebug() << regexes;
return QRegularExpression("^(" + regexes.join('|') + ")$");
}
|
