From 5e0042a51d18eba0c1ce75889960e86f6e996b62 Mon Sep 17 00:00:00 2001
From: Aqua-sama <aqua@iserlohn-fortress.net>
Date: Sun, 22 Nov 2020 21:54:01 +0200
Subject: Hostlist filter plugin can rewrite hostnames

skip clazy warnings in tests
---
 plugins/HostlistFilter/filterlist.h | 64 ++++++++++++++++++++++++++-----------
 1 file changed, 45 insertions(+), 19 deletions(-)

(limited to 'plugins/HostlistFilter/filterlist.h')

diff --git a/plugins/HostlistFilter/filterlist.h b/plugins/HostlistFilter/filterlist.h
index 7301f20..a0fa6f7 100644
--- a/plugins/HostlistFilter/filterlist.h
+++ b/plugins/HostlistFilter/filterlist.h
@@ -6,53 +6,79 @@
  * SPDX-License-Identifier: GPL-3.0
  */
 
-#pragma once
+#ifndef SMOLBOTE_HOSTLIST_FILTERLIST
+#define SMOLBOTE_HOSTLIST_FILTERLIST
 
-#include <map>
+#include <QHash>
 #include <smolbote/filterinterface.hpp>
 
 namespace Hostlist
 {
 
+void parseRule(const QString &line, QStringList &blocked, QHash<QString, QString> &redirected);
+
 class Filterlist final : public FilterList
 {
 public:
-    typedef uint DomainHash;
-    struct Rule {
-        QString domain;
-        QString redirect;
-    };
-    
     Filterlist() = default;
+    Filterlist(const Filterlist &) = delete;
+    Filterlist &operator=(const Filterlist &) = delete;
     ~Filterlist() = default;
 
-    [[nodiscard]] bool findMatch(const QString &domain) const
+    enum Match {
+        NotFound,
+        Block,
+        Redirect
+    };
+
+    [[nodiscard]] Match findMatch(QUrl &url) const
     {
-        const auto hash = qHash(domain, 0);
-        const auto found = rules.find(hash);
-        if(found != rules.end()) {
-            return true;
+        const auto domain = url.host();
+
+        if(blocked.contains(domain))
+            return Block;
+
+        const auto iter = redirected.find(domain);
+        if(iter != redirected.end()) {
+            url.setHost(iter.value());
+            return Redirect;
         }
-        return false;
+
+        return NotFound;
     }
-    int count() const
+
+    [[nodiscard]] auto count() const
     {
-        return rules.size();
+        return blocked.size() + redirected.size();
     }
 
     [[nodiscard]] bool filter(QWebEngineUrlRequestInfo &info) const
     {
-        return false;
+        auto url = info.requestUrl();
+        switch(findMatch(url)) {
+        case NotFound:
+            return false;
+        case Block:
+            info.block(true);
+            return true;
+        case Redirect:
+            info.block(false);
+            info.redirect(url);
+            return true;
+        }
     }
+
     [[nodiscard]] bool isUpToDate() const
     {
         return true;
     }
 
     bool load(QIODevice &device);
-    [[nodiscard]] static std::map<DomainHash, Rule> parseRule(const QString &line);
 
 private:
-    std::map<DomainHash, Rule> rules;
+    QStringList blocked;
+    QHash<QString, QString> redirected;
 };
 } // namespace Hostlist
+
+#endif // SMOLBOTE_HOSTLIST_FILTERLIST
-- 
cgit v1.2.1