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Diffstat (limited to 'lib/urlfilter/formats/adblockrule_parse.cpp')
-rw-r--r--lib/urlfilter/formats/adblockrule_parse.cpp181
1 files changed, 0 insertions, 181 deletions
diff --git a/lib/urlfilter/formats/adblockrule_parse.cpp b/lib/urlfilter/formats/adblockrule_parse.cpp
deleted file mode 100644
index c01ddfd..0000000
--- a/lib/urlfilter/formats/adblockrule_parse.cpp
+++ /dev/null
@@ -1,181 +0,0 @@
-/*
- * 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://neueland.iserlohn-fortress.net/gitea/aqua/smolbote
- *
- * SPDX-License-Identifier: GPL-3.0
- */
-
-#include "adblockrule.h"
-#include "adblockrule_parse.h"
-
-// adblock format documentation
-// https://adblockplus.org/filters
-
-// QString::mid(pos, len) const - Returns a string starting at the specified position index.
-// QString::chop(len) - Removes n characters from the end of the string.
-// QString::remove(pos, len) - Removes n characters from the string, starting at the given position index.
-// QString::trimmed() const - Remove whitespace from start and end
-
-AdBlockRule *parseRule_adblock(const QString &filter)
-{
- QString parsedLine = filter.trimmed();
-
- // there is no rule, or it's a comment
- if(parsedLine.isEmpty() || parsedLine.startsWith("!")) {
- return nullptr;
- }
-
- // css rule -> filterleaves cannot do element blocking
- if(parsedLine.contains(QLatin1Literal("##")) || parsedLine.contains(QLatin1Literal("#@#"))) {
- return nullptr;
- }
-
- // exception rules
- FilterLeaf::Action action = FilterLeaf::Block;
- if(parsedLine.startsWith(QLatin1Literal("@@"))) {
- action = FilterLeaf::Allow;
- parsedLine.remove(0, 2);
- }
-
- // parse options
- QStringList enabledOn, disabledOn;
- QHash<QWebEngineUrlRequestInfo::ResourceType, bool> optionsHash;
- {
- const int sepPos = parsedLine.indexOf(QLatin1Literal("$"));
- if(sepPos != -1) {
- const auto options = parsedLine.mid(sepPos + 1).split(QLatin1Literal(","));
- parsedLine = parsedLine.mid(0, sepPos);
-
- for(const QString &option : options) {
- if(option.startsWith(QLatin1Literal("domain"))) {
- const auto domainList = option.mid(7).split(QLatin1Literal("|"));
-
- for(const QString &domain : domainList) {
- if(domain.startsWith(QLatin1Literal("~"))) {
- disabledOn.append(domain.mid(1));
- } else {
- enabledOn.append(domain);
- }
- }
- } else {
- const auto pair = parseOption(option);
- if(pair)
- optionsHash.insert(pair.value().first, pair.value().second);
- }
- }
- }
- }
-
- FilterLeaf::UrlMatchType matchType = FilterLeaf::InvalidMatch;
-
- if(parsedLine.startsWith(QLatin1Literal("/")) && parsedLine.endsWith(QLatin1Literal("/"))) {
- // regular expression rule
- matchType = FilterLeaf::RegularExpressionMatch;
- parsedLine = parsedLine.mid(1, parsedLine.length() - 2);
-
- } else if(parsedLine.startsWith(QLatin1Literal("||")) && parsedLine.endsWith(QLatin1Literal("^"))) {
- matchType = FilterLeaf::DomainMatch;
- parsedLine = parsedLine.mid(2, parsedLine.length() - 3);
-
- } else if(parsedLine.startsWith(QLatin1Literal("|")) && parsedLine.endsWith(QLatin1Literal("|"))) {
- // string equals rule
- matchType = FilterLeaf::StringEquals;
- parsedLine = parsedLine.mid(1, parsedLine.length() - 2);
-
- } else if(parsedLine.startsWith(QLatin1Literal("||"))) {
- // string starts with rule
- matchType = FilterLeaf::StringStartsWith;
- parsedLine = parsedLine.mid(2);
-
- } else if(parsedLine.endsWith(QLatin1Literal("|"))) {
- // string ends with rule
- matchType = FilterLeaf::StringEndsWith;
- parsedLine.chop(1);
-
- } else {
- // generic contains rule
- matchType = FilterLeaf::StringContains;
-
- // Basic filter rules can use wildcards, which were supported by QRegExp,
- // but were deprecated in QRegularExpression.
-
- // remove beginning and ending wildcards
- if(parsedLine.startsWith(QLatin1Literal("*")))
- parsedLine = parsedLine.mid(1);
-
- if(parsedLine.endsWith(QLatin1Literal("*")))
- parsedLine.chop(1);
-
- if(parsedLine.contains(QLatin1Literal("*")) || parsedLine.contains(QLatin1Literal("^"))) {
- // check for wildcards and translate to regexp
- // wildcard "*" - any number of characters
- // separator "^" - end, ? or /
- parsedLine.replace(QLatin1Literal("||"), QLatin1Literal("^\\w+://"));
- parsedLine.replace(QLatin1Literal("|"), QLatin1Literal("\\|"));
- parsedLine.replace(QLatin1Literal("*"), QLatin1Literal(".*"));
- parsedLine.replace(QLatin1Literal("^"), QLatin1Literal("($|\\?|\\/)"));
-
- matchType = FilterLeaf::RegularExpressionMatch;
- }
- }
-
- AdBlockRule *rule = new AdBlockRule(matchType, parsedLine, action);
- rule->mergeOptions(optionsHash);
- return rule;
-}
-
-std::optional<QPair<QWebEngineUrlRequestInfo::ResourceType, bool>> parseOption(const QString &option)
-{
- const bool exception = !option.startsWith(QLatin1Literal("~"));
-
- if(option.endsWith(QLatin1Literal("script"))) {
- // external scripts loaded via HTML script tag
- return qMakePair(QWebEngineUrlRequestInfo::ResourceTypeScript, exception);
-
- } else if(option.endsWith(QLatin1Literal("image"))) {
- // regular images, typically loaded via HTML img tag
- return qMakePair(QWebEngineUrlRequestInfo::ResourceTypeImage, exception);
-
- } else if(option.endsWith(QLatin1Literal("stylesheet"))) {
- // external CSS stylesheet files
- return qMakePair(QWebEngineUrlRequestInfo::ResourceTypeStylesheet, exception);
-
- } else if(option.endsWith(QLatin1Literal("object"))) {
- // content handled by browser plugins, e.g. Flash or Java
- return qMakePair(QWebEngineUrlRequestInfo::ResourceTypeObject, exception);
-
- } else if(option.endsWith(QLatin1Literal("xmlhttprequest"))) {
- // requests started using the XMLHttpRequest object or fetch() API
- return qMakePair(QWebEngineUrlRequestInfo::ResourceTypeXhr, exception);
-
- } else if(option.endsWith(QLatin1Literal("object-subrequest"))) {
- // requests started by plugins like Flash
- return qMakePair(QWebEngineUrlRequestInfo::ResourceTypePluginResource, exception);
-
- } else if(option.endsWith(QLatin1Literal("subdocument"))) {
- // embedded pages, usually included via HTML frames
- return qMakePair(QWebEngineUrlRequestInfo::ResourceTypeSubFrame, exception);
-
- } else if(option.endsWith(QLatin1Literal("ping"))) {
- // requests started by <a ping> or navigator.sendBeacon()
- return qMakePair(QWebEngineUrlRequestInfo::ResourceTypePing, exception);
-
- } else if(option.endsWith(QLatin1Literal("websocket"))) {
- // requests initiated via WebSocket object
- qDebug("Resource type 'websocket' not available");
-
- } else if(option.endsWith(QLatin1Literal("webrtc"))) {
- // connections opened via RTCPeerConnection instances to ICE servers
- qDebug("Resource type 'webrtc' not available");
-
- } else if(option.endsWith(QLatin1Literal("document"))) {
- // the page itself
- return qMakePair(QWebEngineUrlRequestInfo::ResourceTypeMainFrame, exception);
-
- } else if(option.endsWith(QLatin1Literal("other"))) {
- return qMakePair(QWebEngineUrlRequestInfo::ResourceTypeUnknown, exception);
- }
-
- return std::nullopt;
-}
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