From 05dbc6fb7d8833c183485ec0d846c151b6299c92 Mon Sep 17 00:00:00 2001
From: Aqua-sama <aqua@iserlohn-fortress.net>
Date: Fri, 3 Feb 2017 19:24:40 +0100
Subject: option parsing

---
 src/forms/blockerdialog.cpp      |  4 +--
 src/webengine/blockerrule.cpp    | 66 +++++++++++++++++++++++++++++++++-------
 src/webengine/blockerrule.h      | 32 +++++++++++++++++--
 src/webengine/urlinterceptor.cpp |  4 +--
 4 files changed, 88 insertions(+), 18 deletions(-)

diff --git a/src/forms/blockerdialog.cpp b/src/forms/blockerdialog.cpp
index 5377c97..fa613bd 100644
--- a/src/forms/blockerdialog.cpp
+++ b/src/forms/blockerdialog.cpp
@@ -47,10 +47,10 @@ BlockerDialog::BlockerDialog(QWidget *parent) :
 
     // show subscription items
     for(BlockerRule *rule : m_subscription->urlBlacklist()) {
-        ui->blacklist_listWidget->addItem(rule->pattern());
+        ui->blacklist_listWidget->addItem(rule->toString());
     }
     for(BlockerRule *rule : m_subscription->urlWhitelist()) {
-        ui->whitelist_listWidget->addItem(rule->pattern());
+        ui->whitelist_listWidget->addItem(rule->toString());
     }
 }
 
diff --git a/src/webengine/blockerrule.cpp b/src/webengine/blockerrule.cpp
index 3146854..8ecc1af 100644
--- a/src/webengine/blockerrule.cpp
+++ b/src/webengine/blockerrule.cpp
@@ -28,6 +28,7 @@
 BlockerRule::BlockerRule(QString rule, QObject *parent) :
     QObject(parent)
 {
+    m_rule = rule;
     QString pattern = rule;
 
     // Empty rule or comment
@@ -39,7 +40,23 @@ BlockerRule::BlockerRule(QString rule, QObject *parent) :
     // Exception
     if(pattern.startsWith("@@")) {
         m_exception = true;
-        pattern = pattern.remove(0, 2);
+        pattern.remove(0, 2);
+    }
+
+    // Options
+    if(pattern.contains("$")) {
+        QString opts = pattern.mid(pattern.indexOf("$")+1);
+        for(QString opt : opts.split(',')) {
+            if(opt.endsWith("script")) {
+                m_blacklistOptions.setFlag(RuleOption::script, true);
+                m_whitelistOptions.setFlag(RuleOption::script, opt.startsWith("~"));
+            } else if(opt.endsWith("image")) {
+                m_blacklistOptions.setFlag(RuleOption::image, true);
+                m_whitelistOptions.setFlag(RuleOption::image, opt.startsWith("~"));
+            }
+        }
+
+        pattern.remove(pattern.indexOf("$"), pattern.length());
     }
 
     // Domain
@@ -61,19 +78,41 @@ BlockerRule::BlockerRule(QString rule, QObject *parent) :
     m_type = RuleType::WildcardMatch;
 }
 
-QString BlockerRule::pattern() const
+bool BlockerRule::match(const QWebEngineUrlRequestInfo &info)
 {
-    return ruleExpression.pattern();
-}
+    bool shouldBlock = false;
 
-QString BlockerRule::domain() const
-{
-    return m_domain;
-}
+    switch (m_type) {
+    case RuleType::Invalid:
+        shouldBlock = false;
+        break;
 
-bool BlockerRule::match(const QUrl &url)
-{
-    return ruleExpression.match(url.toString()).hasMatch();
+    case DomainMatch:
+        if(info.requestUrl().host() == m_domain) {
+            shouldBlock = true;
+        }
+        break;
+
+    case RegularExpressionMatch:
+    case WildcardMatch:
+        shouldBlock = ruleExpression.match(info.requestUrl().toString()).hasMatch();
+        break;
+    }
+
+    if(shouldBlock) {
+        if(m_whitelistOptions.testFlag(RuleOption::image) && info.resourceType() == QWebEngineUrlRequestInfo::ResourceTypeImage) {
+            shouldBlock = false;
+        }
+    }
+    if(shouldBlock) {
+        if(m_blacklistOptions.testFlag(RuleOption::image) && info.resourceType() == QWebEngineUrlRequestInfo::ResourceTypeImage) {
+            shouldBlock = true;
+        } else {
+            shouldBlock = false;
+        }
+    }
+
+    return shouldBlock;
 }
 
 bool BlockerRule::isValid()
@@ -89,6 +128,11 @@ bool BlockerRule::isException()
     return m_exception;
 }
 
+QString BlockerRule::toString() const
+{
+    return m_rule;
+}
+
 QString BlockerRule::fromWildcardMatch(const QString &pattern)
 {
     QString parsed;
diff --git a/src/webengine/blockerrule.h b/src/webengine/blockerrule.h
index 95d82b7..df09d10 100644
--- a/src/webengine/blockerrule.h
+++ b/src/webengine/blockerrule.h
@@ -24,6 +24,7 @@
 #include <QObject>
 #include <QUrl>
 #include <QRegularExpression>
+#include <QWebEngineUrlRequestInfo>
 
 class BlockerRule : public QObject
 {
@@ -36,13 +37,33 @@ public:
         WildcardMatch
     };
 
+    enum RuleOption {
+        script = 0,
+        image = 1,
+        stylesheet = 2,
+        object = 4,
+        xmlhttprequest = 8,
+        objectsubrequest = 16,
+        subdocument = 32,
+        ping = 64,
+        websocket = 128,
+        document = 256,
+
+        elemhide = 512,
+        generichide = 1024,
+        genericblock = 2048,
+
+        other = 4096
+    };
+
+    Q_DECLARE_FLAGS(RuleOptions, RuleOption)
+
     explicit BlockerRule(QString rule, QObject *parent = 0);
 
-    QString pattern() const;
-    QString domain() const;
-    bool match(const QUrl &url);
+    bool match(const QWebEngineUrlRequestInfo &info);
     bool isValid();
     bool isException();
+    QString toString() const;
 
 signals:
 
@@ -52,10 +73,15 @@ private:
     // TODO: subclass QRegularExpression and move this there
     QString fromWildcardMatch(const QString &pattern);
 
+    QString m_rule;
+
     RuleType m_type;
     bool m_exception = false;
     QString m_domain;
     QRegularExpression ruleExpression;
+
+    RuleOptions m_blacklistOptions;
+    RuleOptions m_whitelistOptions;
 };
 
 #endif // ADBLOCKRULE_H
diff --git a/src/webengine/urlinterceptor.cpp b/src/webengine/urlinterceptor.cpp
index cc196ba..fbcef64 100644
--- a/src/webengine/urlinterceptor.cpp
+++ b/src/webengine/urlinterceptor.cpp
@@ -28,14 +28,14 @@ UrlRequestInterceptor::UrlRequestInterceptor(QObject *parent) :
 void UrlRequestInterceptor::interceptRequest(QWebEngineUrlRequestInfo &info)
 {
     for(BlockerRule *rule : m_sub->urlWhitelist()) {
-        if(rule->match(info.requestUrl())) {
+        if(rule->match(info)) {
             qDebug("OK %s", qUtf8Printable(info.requestUrl().toString()));
             return;
         }
     }
 
     for(BlockerRule *rule : m_sub->urlBlacklist()) {
-        if(rule->match(info.requestUrl())) {
+        if(rule->match(info)) {
             info.block(true);
             qDebug("   %s", qUtf8Printable(info.requestUrl().toString()));
             return;
-- 
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