From 0772cf8b98387b2b641ae29aeb1b459eef22d794 Mon Sep 17 00:00:00 2001
From: Aqua-sama <aqua@iserlohn-fortress.net>
Date: Wed, 22 Mar 2017 22:59:07 +0100
Subject: Blocker fixes

---
 src/blocker/blockersubscription.cpp | 109 ++++++++++++++++++++++++++----------
 1 file changed, 80 insertions(+), 29 deletions(-)

(limited to 'src/blocker/blockersubscription.cpp')

diff --git a/src/blocker/blockersubscription.cpp b/src/blocker/blockersubscription.cpp
index 02def48..86cb0b5 100644
--- a/src/blocker/blockersubscription.cpp
+++ b/src/blocker/blockersubscription.cpp
@@ -22,35 +22,32 @@
 #include "ui_subscriptionform.h"
 
 #include "browser.h"
-#include <QFile>
 #include <QNetworkRequest>
 #include <QNetworkReply>
 
-BlockerSubscription::BlockerSubscription(const QString url, QWidget *parent) :
+BlockerSubscription::BlockerSubscription(const QUrl url, QWidget *parent) :
     QWidget(parent),
     ui(new Ui::SubscriptionForm)
 {
     ui->setupUi(this);
-    QUrl _url = QUrl::fromUserInput(url);
-    m_name = _url.fileName();
-
-    if(!sSettings->value("blocker.path").toString().isEmpty()) {
-        QString cacheName = sSettings->value("blocker.path").toString() + m_name;
-        QFile *cache = new QFile(cacheName);
-        if(cache->exists()) {
-            load(cache);
-        }
-
+    m_name = url.fileName();
+    m_url = url;
+
+    QString subPath = sSettings->value("blocker.path").toString() + m_name;
+    qDebug("Adding subscription [%s]", qUtf8Printable(subPath));
+    QFile *sub = new QFile(subPath);
+    if(sub->exists()) {
+        sub->open(QIODevice::ReadOnly);
+        load(sub);
     } else {
-
-        // no cache path specified - pull the subscription
-        QNetworkRequest request;
-        request.setUrl(QUrl::fromUserInput(url));
-
-        QNetworkReply *reply = sNetwork->get(request);
-        connect(reply, &QNetworkReply::finished, [this, reply]() {
-            this->load(reply);
-        });
+        if(!url.scheme().startsWith("http")) {
+            qWarning("Invalid url, subscription cannot be updated");
+            sub->deleteLater();
+            return;
+        }
+        qDebug("Subscription doesn't exist, updating...");
+        sub->open(QIODevice::ReadWrite);
+        update(sub);
     }
 }
 
@@ -64,14 +61,69 @@ QString BlockerSubscription::name() const
     return m_name;
 }
 
+/**
+ * Check if a URL request should be blocked or not
+ * @param info
+ * @return true if it should be blocked; false otherwise
+ */
+BlockerSubscription::MatchResult BlockerSubscription::match(QWebEngineUrlRequestInfo &info)
+{
+    MatchResult result;
+
+    for(BlockerRule* rule : m_urlWhitelist) {
+        if(rule->match(info)) {
+            // this request is whitelisted
+            result.match = true;
+            result.block = false;
+            result.pattern = rule->filter();
+            return result;
+        }
+    }
+
+    // request is not in the whitelist
+    for(BlockerRule* rule : m_urlBlacklist) {
+        if(rule->match(info)) {
+            // this request is blacklisted
+            result.match = true;
+            result.block = true;
+            result.pattern = rule->filter();
+            return result;
+        }
+    }
+
+    // request matches neither whitelist nor blacklist
+    result.match = false;
+    result.block = false;
+    return result;
+}
+
+void BlockerSubscription::update(QFile *cache)
+{
+    // no cache path specified - pull the subscription
+    QNetworkRequest request;
+    request.setUrl(m_url);
+
+    QNetworkReply *reply = sNetwork->get(request);
+    connect(reply, &QNetworkReply::readyRead, [this, reply, cache]() {
+        cache->write(reply->readAll());
+    });
+    connect(reply, &QNetworkReply::finished, [this, reply, cache]() {
+        cache->write(reply->readAll());
+        cache->flush();
+        cache->seek(0);
+        reply->deleteLater();
+        qDebug("Subscription updated: [%s]", qUtf8Printable(this->m_name));
+        this->load(cache);
+    });
+}
+
 void BlockerSubscription::load(QIODevice *dev)
 {
     QTextStream subscription(dev);
 
     QString header = subscription.readLine();
     if(!header.startsWith("[Adblock Plus")) {
-        qDebug("Invalid format of subscription: %s", qUtf8Printable(m_name));
-        return;
+        qWarning("Invalid format of subscription: %s", qUtf8Printable(m_name));
     }
 
     // clear all lists
@@ -85,24 +137,23 @@ void BlockerSubscription::load(QIODevice *dev)
             if(line.startsWith('!')) {
                 parseComment(line);
             } else {
-                // The line is not a comment
-
+                // The line is not empty or a comment
                 rules++;
                 BlockerRule *rule = new BlockerRule(line, this);
 
                 if(rule->isValid()) {
                     if(rule->isException()) {
                         m_urlWhitelist.append(rule);
-                        ui->whitelist_listWidget->addItem(rule->toString());
+                        ui->whitelist_listWidget->addItem(rule->filter());
                     } else {
-                        ui->blacklist_listWidget->addItem(rule->toString());
+                        ui->blacklist_listWidget->addItem(rule->filter());
                         m_urlBlacklist.append(rule);
                     }
                 }
 
             }
-        }
-    }
+        } // line.isEmpty
+    } // subscription.atEnd()
 
     qDebug("Loaded %i/%i rules from subscription %s", m_urlBlacklist.count() + m_urlWhitelist.count(), rules, qUtf8Printable(m_name));
     dev->deleteLater();
-- 
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