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/*
* This file is part of smolbote. It's copyrighted by the contributors recorded
* in the version control history of the file, available from its original
* location: git://neueland.iserlohn-fortress.net/smolbote.git
*
* SPDX-License-Identifier: GPL-3.0
*/
#include "urlinterceptor.h"
#include <QDir>
#include <QFile>
#include <QTextStream>
UrlRequestInterceptor::UrlRequestInterceptor(const QString &path, QObject *parent) :
QWebEngineUrlRequestInterceptor(parent)
{
#ifdef QT_DEBUG
qDebug("Reading request blocklist: %s", qUtf8Printable(path));
#endif
QDir hostsD(path);
for(const QString &file : hostsD.entryList(QDir::Files)) {
qDebug("Parsing hosts.d/%s: %i", qUtf8Printable(file), parseHostfile(hostsD.absoluteFilePath(file)));
}
qDebug("Total number of rules: %i", m_rules.count());
}
UrlRequestInterceptor::~UrlRequestInterceptor()
{
qDeleteAll(m_rules);
}
void UrlRequestInterceptor::interceptRequest(QWebEngineUrlRequestInfo &info)
{
if(m_rules.contains(info.requestUrl().host())) {
if(m_rules.value(info.requestUrl().host())->isBlocking) {
info.block(true);
}
}
}
int UrlRequestInterceptor::parseHostfile(const QString &filename)
{
int numRules = 0;
QFile file(filename);
// try to open the file
if(file.open(QIODevice::ReadOnly | QIODevice::Text)) {
// with a QTextStream we can read lines without getting linebreaks at the end
QTextStream out(&file);
while(!out.atEnd()) {
const QString &line = out.readLine().trimmed();
// skip comments and empty lines
if(!line.startsWith('#') && !line.isEmpty()) {
// format is <redirect> <host>
//0.0.0.0 host
QStringList parts = line.split(' ');
QString redirect = parts.at(0);
QString host = parts.at(1);
if(m_rules.contains(host)) {
qWarning("Duplicate rule %s", qUtf8Printable(line));
}
if(redirect == "0.0.0.0") {
HostRule *rule = new HostRule;
rule->isBlocking = true;
m_rules.insert(host, rule);
++numRules;
} else {
qDebug("Ignoring rule %s", qUtf8Printable(line));
}
}
}
// close once we're done with it
file.close();
}
return numRules;
}
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