From d1287f43964633035938f4f4d4133bb6d9da7b3e Mon Sep 17 00:00:00 2001
From: Aqua-sama <aqua@iserlohn-fortress.net>
Date: Mon, 10 Feb 2020 20:58:39 +0200
Subject: staging: smolblok

smolblok is a replacement for the current lib/urlfilter AdBlockPlus
and hostlist format filter parser. It is a library that uses plugins to
provide support for different filter formats.

staging/adblock: AdBlockPlus parser plugin
plugins/smolblok_hostlist: hostlist format parser plugin

Headers will be installed to include/smolbote/

Remove lib/urlfilter
---
 plugins/smolblok_hostlist/filterlist.cpp | 58 ++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 plugins/smolblok_hostlist/filterlist.cpp

(limited to 'plugins/smolblok_hostlist/filterlist.cpp')

diff --git a/plugins/smolblok_hostlist/filterlist.cpp b/plugins/smolblok_hostlist/filterlist.cpp
new file mode 100644
index 0000000..a0fd414
--- /dev/null
+++ b/plugins/smolblok_hostlist/filterlist.cpp
@@ -0,0 +1,58 @@
+/*
+ * 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://library.iserlohn-fortress.net/aqua/smolbote.git
+ *
+ * SPDX-License-Identifier: GPL-3.0
+ */
+
+#include "filterlist.h"
+#include <QIODevice>
+#include <QTextStream>
+
+using namespace Hostlist;
+
+#ifdef FUZZER
+extern "C" int LLVMFuzzerTestOneInput(const char *Data, long long Size)
+{
+    Filterlist::parseRule(QString::fromLatin1(Data, Size));
+    return 0;
+}
+#endif
+
+std::map<Filterlist::DomainHash, Filterlist::Rule> Filterlist::parseRule(const QString &line)
+{
+    if(line.isEmpty() || line.at(0) == '#') {
+        return {};
+    }
+
+    auto parts = line.trimmed().split(' ');
+    if(parts.size() < 2) {
+        return {};
+    }
+
+    const auto redirect = (parts[0] == "0.0.0.0") ? QString() : parts[0];
+
+    std::map<DomainHash, Rule> r;
+    for(int i = 1; i < parts.size(); ++i) {
+        r.emplace(qHash(parts[i], 0), Filterlist::Rule{ parts[i], redirect });
+    }
+    return r;
+}
+
+bool Filterlist::load(QIODevice &from)
+{
+    if(!from.isReadable() || !from.isTextModeEnabled()) {
+        return false;
+    }
+
+    while(from.bytesAvailable() > 0) {
+        const auto line = from.readLine(512).trimmed();
+        auto r = parseRule(line);
+        if(!r.empty()) {
+            qDebug("merging in %lu rules", r.size());
+            rules.merge(r);
+        }
+    }
+    return true;
+}
-- 
cgit v1.2.1