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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: https://neueland.iserlohn-fortress.net/gitea/aqua/smolbote
*
* SPDX-License-Identifier: GPL-3.0
*/
#include "filter.h"
#include "urlinterceptor.h"
#include <QDir>
#include <QJsonArray>
#include <QJsonDocument>
#include <QTextStream>
#include <configuration/configuration.h>
#include "util.h"
QHash<QString, Filter::HostRule> parseHostlist(const QString &filename)
{
QHash<QString, Filter::HostRule> rules;
if(QFile hostfile(filename); hostfile.open(QIODevice::ReadOnly | QIODevice::Text)) {
// with a QTextStream we can read lines without getting linebreaks at the end
QTextStream hostfile_stream(&hostfile);
while(!hostfile_stream.atEnd()) {
// read line and remove any whitespace at the end
const QString &line = hostfile_stream.readLine().trimmed();
// skip comments and empty lines
if(line.isEmpty() || line.startsWith('#'))
continue;
// everything else should be a rule
// format is <redirect> <host>
// 0.0.0.0 hostname
const QStringList &parts = line.split(' ');
const QString &redirect = parts.at(0);
for(auto i = parts.constBegin() + 1; i != parts.constEnd(); ++i) {
if(!rules.contains(*i)) {
Filter::HostRule rule{};
rule.isBlocking = (redirect == "0.0.0.0");
rules.insert(*i, rule);
}
}
// for(const QString &host : parts.mid(1)) {
// if(!rules.contains(host)) {
// UrlRequestInterceptor::HostRule rule{};
// rule.isBlocking = redirect == "0.0.0.0";
// rules.insert(host, rule);
// }
// }
}
hostfile.close();
}
return rules;
}
/*
inline std::vector<FilterRule> parseAdBlockList(const QString &filename)
{
std::vector<FilterRule> rules;
QFile list(filename);
if(list.open(QIODevice::ReadOnly | QIODevice::Text), true) {
QTextStream l(&list);
QString line;
while(l.readLineInto(&line)) {
AdBlockRule rule(line);
if(rule.isEnabled()) {
rules.emplace_back(std::move(rule));
}
}
list.close();
}
return rules;
}*/
Filter::Filter::Filter(const std::unique_ptr<Configuration> &config, QObject* parent)
: QObject(parent)
{
// parse headers
if(const auto headers = config->value<QStringList>("filter.header"); headers) {
for(const QString &header : headers.value()) {
const auto list = header.split(QLatin1Literal(":"));
if(list.length() == 2)
m_headers.insert(list.at(0).toLatin1(), list.at(1).toLatin1());
}
}
const QStringList hostfiles = Util::files(config->value<QString>("filter.path").value());
for(const QString &hostfile : hostfiles) {
m_hostlist.unite(parseHostlist(hostfile));
}
/*
auto filtersPath = config->value<QString>("filter.adblock");
if(filtersPath)
filters = parseAdBlockList(filtersPath.value());
*/
}
std::optional<Filter::HostRule> Filter::hostlistRule(const QString& url) const
{
if(!m_hostlist.contains(url))
return std::nullopt;
return std::optional<Filter::HostRule>(m_hostlist.value(url));
}
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