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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/enterprise/reporting/legacy_tech/legacy_tech_url_matcher.h"
#include "base/functional/bind.h"
#include "chrome/browser/enterprise/reporting/prefs.h"
#include "chrome/browser/profiles/profile.h"
#include "components/prefs/pref_service.h"
#include "components/url_matcher/url_util.h"
#include "url/gurl.h"
namespace enterprise_reporting {
LegacyTechURLMatcher::LegacyTechURLMatcher(Profile* profile)
: profile_(profile) {
pref_change_.Init(profile->GetPrefs());
pref_change_.Add(kCloudLegacyTechReportAllowlist,
base::BindRepeating(&LegacyTechURLMatcher::OnPrefUpdated,
base::Unretained(this)));
OnPrefUpdated();
}
LegacyTechURLMatcher::~LegacyTechURLMatcher() = default;
void LegacyTechURLMatcher::OnPrefUpdated() {
base::MatcherStringPattern::ID id = 0;
url_matcher::URLMatcherConditionSet::Vector conditions;
url_matcher_ = std::make_unique<url_matcher::URLMatcher>();
for (const auto& url :
profile_->GetPrefs()->GetList(kCloudLegacyTechReportAllowlist)) {
url_matcher::util::FilterComponents components;
url_matcher::util::FilterToComponents(
url.GetString(), &components.scheme, &components.host,
&components.match_subdomains, &components.port, &components.path,
&components.query);
// Scheme, port and query in the pattern will be ignored while subdomains
// must be fully specified.
components.scheme = "";
components.port = 0;
components.query = "";
auto condition = url_matcher::util::CreateConditionSet(
url_matcher_.get(), id++, components.scheme, components.host,
components.match_subdomains, components.port, components.path,
components.query, components.allow);
conditions.push_back(condition);
path_length_.push_back(components.path.size());
}
url_matcher_->AddConditionSets(conditions);
}
std::optional<std::string> LegacyTechURLMatcher::GetMatchedURL(
const GURL& url) const {
std::set<base::MatcherStringPattern::ID> matched_ids =
url_matcher_->MatchURL(url);
if (matched_ids.empty()) {
return std::nullopt;
}
size_t maximum_path_length = 0;
base::MatcherStringPattern::ID maximum_path_id;
for (const auto id : matched_ids) {
if (path_length_[id] >= maximum_path_length) {
maximum_path_id = id;
maximum_path_length = path_length_[id];
}
}
return profile_->GetPrefs()
->GetList(kCloudLegacyTechReportAllowlist)[maximum_path_id]
.GetString();
}
} // namespace enterprise_reporting
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