Add removal filter support for Cookies, Storage, and Content Settings.

chrome/browser/browsing_data/browsing_data_filter_builder.cc

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <string>
+#include <vector>
+
+#include "base/bind.h"
+#include "chrome/browser/browsing_data/browsing_data_filter_builder.h"
+#include "components/content_settings/core/common/content_settings_pattern.h"
+#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
+
+using net::registry_controlled_domains::GetDomainAndRegistry;
+using net::registry_controlled_domains::INCLUDE_PRIVATE_REGISTRIES;
+using Relation = ContentSettingsPattern::Relation;
+
+namespace {
+
+bool NoopFilter(const GURL& url) {
+  return true;
+}
+
+}  // namespace
+
+BrowsingDataFilterBuilder::BrowsingDataFilterBuilder(Mode mode) : mode_(mode) {}
+
+BrowsingDataFilterBuilder::~BrowsingDataFilterBuilder() {}
+
+void BrowsingDataFilterBuilder::AddRegisterableDomain(
+    const std::string& domain) {
+  // We check that the domain we're given is actually a eTLD+1, or an IP
+  // address.
+  DCHECK(GetDomainAndRegistry("www." + domain, INCLUDE_PRIVATE_REGISTRIES) ==
+             domain ||
+         GURL("http://" + domain).HostIsIPAddress());
+  domain_list_.insert(domain);
+}
+
+void BrowsingDataFilterBuilder::SetMode(Mode mode) {
+  mode_ = mode;
+}
+
+bool BrowsingDataFilterBuilder::IsEmptyBlacklist() const {
+  return mode_ == Mode::BLACKLIST && domain_list_.empty();
+}
+
+base::Callback<bool(const GURL&)>
+BrowsingDataFilterBuilder::BuildSameDomainFilter() const {
+  std::set<std::string>* domains = new std::set<std::string>(domain_list_);
+  return base::Bind(&BrowsingDataFilterBuilder::MatchesURL,
+                    base::Owned(domains), mode_);
+}
+
+base::Callback<bool(const ContentSettingsPattern& pattern)>
+BrowsingDataFilterBuilder::BuildWebsiteSettingsPatternMatchesFilter() const {
+  std::vector<ContentSettingsPattern>* patterns_from_domains =
+      new std::vector<ContentSettingsPattern>();
+  patterns_from_domains->reserve(domain_list_.size());
+
+  std::unique_ptr<ContentSettingsPattern::BuilderInterface> builder(
+      ContentSettingsPattern::CreateBuilder(/* use_legacy_validate */ false));
+  for (const std::string& domain : domain_list_) {
+    builder->WithSchemeWildcard()
+        ->WithPortWildcard()
+        ->WithPathWildcard()
+        ->WithHost(domain);
+    if (!GURL("http://" + domain).HostIsIPAddress()) {
+      builder->WithDomainWildcard();
+    }
+    patterns_from_domains->push_back(builder->Build());
+  }
+
+  for (const ContentSettingsPattern& domain : *patterns_from_domains) {
+    DCHECK(domain.IsValid());
+  }
+
+  return base::Bind(&BrowsingDataFilterBuilder::MatchesWebsiteSettingsPattern,
+                    base::Owned(patterns_from_domains), mode_);
+}
+
+base::Callback<bool(const net::CanonicalCookie& pattern)>
+BrowsingDataFilterBuilder::BuildDomainCookieFilter() const {
+  std::set<std::string>* domains_and_ips =
+      new std::set<std::string>(domain_list_);
+  return base::Bind(
+      &BrowsingDataFilterBuilder::MatchesCookieForRegisterableDomainsAndIPs,
+      base::Owned(domains_and_ips), mode_);
+}
+
+// static
+base::Callback<bool(const GURL&)> BrowsingDataFilterBuilder::BuildNoopFilter() {
+  return base::Bind(&NoopFilter);
+}
+
+// static
+bool BrowsingDataFilterBuilder::MatchesURL(
+    std::set<std::string>* registerable_domains,
+    Mode mode,
+    const GURL& url) {
+  std::string url_registerable_domain =
+      GetDomainAndRegistry(url, INCLUDE_PRIVATE_REGISTRIES);
+  return (registerable_domains->find(url_registerable_domain) !=
+              registerable_domains->end() ||
+          (url.HostIsIPAddress() && (registerable_domains->find(url.host()) !=
+                                     registerable_domains->end()))) ==
+         (mode == WHITELIST);
+}
+
+// static
+bool BrowsingDataFilterBuilder::MatchesWebsiteSettingsPattern(
+    std::vector<ContentSettingsPattern>* domain_patterns,
+    Mode mode,
+    const ContentSettingsPattern& pattern) {
+  for (const ContentSettingsPattern& domain : *domain_patterns) {
+    DCHECK(domain.IsValid());
+    Relation relation = pattern.Compare(domain);
+    if (relation == Relation::IDENTITY || relation == Relation::PREDECESSOR)
+      return mode == WHITELIST;
+  }
+  return mode != WHITELIST;
+}
+
+// static
+bool BrowsingDataFilterBuilder::MatchesCookieForRegisterableDomainsAndIPs(
+    std::set<std::string>* domains_and_ips,
+    Mode mode,
+    const net::CanonicalCookie& cookie) {
+  if (domains_and_ips->empty())
+    return mode == BLACKLIST;
+  std::string cookie_domain = cookie.Domain();
+  if (cookie.IsDomainCookie())
+    cookie_domain = cookie_domain.substr(1);
+  std::string parsed_cookie_domain =
+      GetDomainAndRegistry(cookie_domain, INCLUDE_PRIVATE_REGISTRIES);
+  // This means we're an IP address.
+  if (parsed_cookie_domain.empty())
+    parsed_cookie_domain = cookie_domain;
+  return (mode == WHITELIST) == (domains_and_ips->find(parsed_cookie_domain) !=
+                                 domains_and_ips->end());
+}