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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/shared_highlighting/core/common/disabled_sites.h"
#include <string_view>
#include <unordered_set>
#include "base/containers/fixed_flat_map.h"
#include "base/feature_list.h"
#include "base/strings/string_util.h"
#include "components/shared_highlighting/core/common/shared_highlighting_features.h"
#include "third_party/re2/src/re2/re2.h"
namespace shared_highlighting {
namespace {
bool IsAmpGenerationEnabled() {
#if BUILDFLAG(IS_IOS)
return base::FeatureList::IsEnabled(kSharedHighlightingAmp);
#else
return true;
#endif
}
} // namespace
bool ShouldOfferLinkToText(const GURL& url) {
// If a URL's host matches a key in the map, then the path will be tested
// against the RE stored in the value. For example, {"foo.com", ".*"} means
// any page on the foo.com domain.
static constexpr auto kBlocklist =
base::MakeFixedFlatMap<std::string_view, std::string_view>(
{{"facebook.com", ".*"},
// TODO(crbug.com/40736718): special case this to cover other Google
// TLDs
{"google.com", "^\\/amp\\/.*"},
{"instagram.com", ".*"},
{"mail.google.com", ".*"},
{"outlook.live.com", ".*"},
{"reddit.com", ".*"},
{"twitter.com", ".*"},
{"web.whatsapp.com", ".*"},
{"youtube.com", ".*"}});
std::string domain = url.host();
if (domain.compare(0, 4, "www.") == 0) {
domain = domain.substr(4);
} else if (domain.compare(0, 2, "m.") == 0) {
domain = domain.substr(2);
} else if (domain.compare(0, 7, "mobile.") == 0) {
domain = domain.substr(7);
}
if (IsAmpGenerationEnabled() && domain.compare("google.com") == 0) {
return true;
}
auto block_list_it = kBlocklist.find(domain);
if (block_list_it != kBlocklist.end()) {
if (re2::RE2::FullMatch(url.path(), block_list_it->second.data())) {
return false;
}
}
return true;
}
bool SupportsLinkGenerationInIframe(GURL main_frame_url) {
const std::unordered_set<std::string> good_hosts = {
"www.google.com", "m.google.com", "mobile.google.com",
"www.bing.com", "m.bing.com", "mobile.bing.com"};
return main_frame_url.SchemeIs(url::kHttpsScheme) &&
good_hosts.find(main_frame_url.host()) != good_hosts.end() &&
base::StartsWith(main_frame_url.path(), "/amp/");
}
} // namespace shared_highlighting
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