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#include "filterrule.h"
#include <QWebEngineUrlRequestInfo>
#include <QJsonArray>
void parseJson(std::unique_ptr<FilterRule> &rule, const QJsonObject &filter)
{
// set action
{
if(!filter.value("whitelist").isUndefined()) {
rule->setActionType(FilterRule::Whitelist);
} else if(!filter.value("blacklist").isUndefined()) {
rule->setActionType(FilterRule::Blacklist);
} else if(!filter.value("redirect").isUndefined()) {
rule->setActionType(FilterRule::Redirect);
rule->setRedirectUrl(QUrl::fromUserInput(filter.value("redirect").toString()));
} else if(!filter.value("setheader").isUndefined()) {
rule->setActionType(FilterRule::SetHeader);
for(const QJsonValue v : filter.value("setheader").toArray()) {
QStringList h = v.toString().split(':');
rule->addHeaderRule(h.at(0).toLatin1(), h.at(1).toLatin1());
}
}
}
// set match type
{
const QJsonValue regexpValue = filter.value("regexp");
const QJsonValue endswithValue = filter.value("endswith");
const QJsonValue containsValue = filter.value("contains");
if(!regexpValue.isUndefined()) {
rule->setMatchType(FilterRule::RegExpMatchRule, regexpValue.toString());
} else if(!endswithValue.isUndefined()) {
rule->setMatchType(FilterRule::StringEndsMatchRule, endswithValue.toString());
} else if(!containsValue.isUndefined()) {
rule->setMatchType(FilterRule::StringContainsMatchRule, containsValue.toString());
} else
rule->setMatchType(FilterRule::MatchAllUrlsRule);
}
}
FilterRule::FilterRule(const QJsonObject &filter)
{
m_matcher.setCaseSensitivity(Qt::CaseInsensitive);
}
void FilterRule::setActionType(ActionType type)
{
m_actionType = type;
}
void FilterRule::setMatchType(MatchType type, const QString &pattern)
{
m_matchType = type;
switch (type) {
case RegExpMatchRule:
m_regexp.setPattern(pattern);
break;
case StringEndsMatchRule:
m_pattern = pattern;
break;
case StringContainsMatchRule:
m_matcher.setPattern(pattern);
default:
break;
}
}
void FilterRule::setRedirectUrl(const QUrl &url)
{
m_redirectUrl = url;
}
void FilterRule::addHeaderRule(const QByteArray &header, const QByteArray &value)
{
m_headers.insert(header, value);
}
bool FilterRule::isValid() const
{
return (m_matchType != MatchType::InvalidMatch) && (m_actionType != ActionType::InvalidAction);
}
bool FilterRule::process(QWebEngineUrlRequestInfo &info) const
{
Q_ASSERT(m_actionType != ActionType::InvalidAction);
if(matchRequestUrl(info.requestUrl().toString(), info.resourceType())) {
switch (m_actionType) {
case ActionType::Whitelist:
info.block(false);
return true;
case ActionType::Blacklist:
info.block(true);
return true;
case ActionType::Redirect:
info.redirect(m_redirectUrl);
return true;
case ActionType::SetHeader:
for(auto it = m_headers.constBegin(); it != m_headers.constEnd(); ++it) {
info.setHttpHeader(it.key(), it.value());
}
return true;
case ActionType::InvalidAction:
break;
}
}
return false;
}
bool FilterRule::matchRequestUrl(const QString &requestUrl, const QWebEngineUrlRequestInfo::ResourceType type) const
{
Q_ASSERT(m_matchType != MatchType::InvalidMatch);
if(!m_resourceTypeOptions.isEmpty() && !m_resourceTypeOptions.contains(type))
return false;
switch (m_matchType) {
case MatchType::RegExpMatchRule:
return m_regexp.match(requestUrl).hasMatch();
case MatchType::StringEndsMatchRule:
return requestUrl.endsWith(m_pattern);
case MatchType::StringContainsMatchRule:
return m_matcher.indexIn(requestUrl) != -1;
case MatchType::MatchAllUrlsRule:
return true;
default:
return false;
}
}
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