From e5065185fdb372e32538f777acf3c7684400aad6 Mon Sep 17 00:00:00 2001
From: David Rosca <nowrep@gmail.com>
Date: Tue, 14 Oct 2014 17:05:14 +0200
Subject: [PATCH] AdBlock: Add DuckDuckGo ad whitelist rules to custom list

Those rules cannot be deleted, but can be disabled.
Please consider not disabling those rules. Thanks!
---
 src/lib/adblock/adblocksubscription.cpp | 26 +++++++++++++++++++++++++
 src/lib/adblock/adblocksubscription.h   |  1 +
 2 files changed, 27 insertions(+)

diff --git a/src/lib/adblock/adblocksubscription.cpp b/src/lib/adblock/adblocksubscription.cpp
index f9e090f74..76ab618c1 100644
--- a/src/lib/adblock/adblocksubscription.cpp
+++ b/src/lib/adblock/adblocksubscription.cpp
@@ -505,6 +505,32 @@ AdBlockCustomList::AdBlockCustomList(QObject* parent)
     setFilePath(DataPaths::currentProfilePath() + QLatin1String("/adblock/customlist.txt"));
 }
 
+void AdBlockCustomList::loadSubscription(const QStringList &disabledRules)
+{
+    // DuckDuckGo ad whitelist rules
+    // They cannot be removed, but can be disabled.
+    // Please consider not disabling them. Thanks!
+
+    const QString ddg1 = QSL("@@||duckduckgo.com^$document");
+    const QString ddg2 = QSL("duckduckgo.com#@#.has-ad");
+
+    const QString rules = QzTools::readAllFileContents(filePath());
+
+    QFile file(filePath());
+    if (file.open(QFile::WriteOnly | QFile::Append)) {
+        QTextStream stream(&file);
+
+        if (!rules.contains(ddg1))
+            stream << ddg1;
+
+        if (!rules.contains(ddg2))
+            stream << ddg2;
+    }
+    file.close();
+
+    AdBlockSubscription::loadSubscription(disabledRules);
+}
+
 void AdBlockCustomList::saveSubscription()
 {
     QFile file(filePath());
diff --git a/src/lib/adblock/adblocksubscription.h b/src/lib/adblock/adblocksubscription.h
index 9087be0dd..56d1cc725 100644
--- a/src/lib/adblock/adblocksubscription.h
+++ b/src/lib/adblock/adblocksubscription.h
@@ -143,6 +143,7 @@ class AdBlockCustomList : public AdBlockSubscription
 public:
     explicit AdBlockCustomList(QObject* parent = 0);
 
+    void loadSubscription(const QStringList &disabledRules);
     void saveSubscription();
 
     bool canEditRules() const;