From aaed4ebc642d95dfb3cddab4fad196e870077bcf Mon Sep 17 00:00:00 2001
From: Aqua-sama <aqua@iserlohn-fortress.net>
Date: Thu, 5 Jul 2018 19:37:05 +0200
Subject: Add web/urlfilter

---
 lib/web/urlfilter/filterrule.cpp | 88 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 lib/web/urlfilter/filterrule.cpp

(limited to 'lib/web/urlfilter/filterrule.cpp')

diff --git a/lib/web/urlfilter/filterrule.cpp b/lib/web/urlfilter/filterrule.cpp
new file mode 100644
index 0000000..5a9310e
--- /dev/null
+++ b/lib/web/urlfilter/filterrule.cpp
@@ -0,0 +1,88 @@
+#include "filterrule.h"
+#include <QWebEngineUrlRequestInfo>
+#include <QJsonArray>
+
+FilterRule::FilterRule(const QJsonObject &filter)
+{
+    const QString action = filter.value("action").toString();
+
+    // there is no action specified => this rule is invalid
+    if(action.isEmpty())
+        return;
+
+    if(action == "Whitelist")
+        m_action = ActionType::Whitelist;
+    else if (action == "Blacklist")
+        m_action = ActionType::Blacklist;
+    else if (action == "Redirect") {
+        m_action = ActionType::Redirect;
+        m_redirectUrl = QUrl::fromUserInput(filter.value("url").toString());
+    } else if (action == "SetHeader")
+        m_action = ActionType::SetHeader;
+    else        // invalid action
+        return;
+
+    QJsonValue regexp = filter.value("regexp");
+    QJsonValue endswith = filter.value("endswith");
+    QJsonValue contains = filter.value("contains");
+
+    if(!regexp.isUndefined()) {
+        m_type = RuleType::RegExpMatchRule;
+        this->regexp.setPattern(regexp.toString());
+    } else if(!endswith.isUndefined()) {
+        m_type = RuleType::StringEndsMatchRule;
+        pattern = endswith.toString();
+    } else if(!contains.isUndefined()) {
+        m_type = RuleType::StringContainsMatchRule;
+        this->matcher.setPattern(contains.toString());
+        this->matcher.setCaseSensitivity(Qt::CaseInsensitive);
+    } else      // invalid rule
+        return;
+
+    m_options.insert(QWebEngineUrlRequestInfo::ResourceTypeImage, true);
+}
+
+bool FilterRule::isValid() const
+{
+    return m_type != RuleType::Invalid;
+}
+
+bool FilterRule::process(QWebEngineUrlRequestInfo &info) const
+{
+    Q_ASSERT(m_type != RuleType::Invalid);
+
+    if(matchRequestUrl(info.requestUrl().toString(), info.resourceType())) {
+        switch (m_action) {
+        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:
+            break;
+        }
+    }
+
+    return false;
+}
+
+bool FilterRule::matchRequestUrl(const QString &requestUrl, const QWebEngineUrlRequestInfo::ResourceType type) const
+{
+    if(!m_options.contains(type))
+        return false;
+
+    switch (m_type) {
+    case RuleType::RegExpMatchRule:
+        return regexp.match(requestUrl).hasMatch();
+    case RuleType::StringEndsMatchRule:
+        return requestUrl.endsWith(pattern);
+    case RuleType::StringContainsMatchRule:
+        return matcher.indexIn(requestUrl) != -1;
+    default:
+        return false;
+    }
+}
-- 
cgit v1.2.1