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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "extensions/common/event_matcher.h"
#include <utility>
#include "base/functional/callback.h"
#include "base/strings/string_util.h"
#include "extensions/common/mojom/event_dispatcher.mojom.h"
namespace {
const char kUrlFiltersKey[] = "url";
const char kWindowTypesKey[] = "windowTypes";
}
namespace extensions {
const char kEventFilterServiceTypeKey[] = "serviceType";
EventMatcher::EventMatcher(std::unique_ptr<base::Value::Dict> filter,
int routing_id)
: filter_(std::move(filter)), routing_id_(routing_id) {}
EventMatcher::~EventMatcher() {
}
bool EventMatcher::MatchNonURLCriteria(
const mojom::EventFilteringInfo& event_info) const {
if (event_info.has_instance_id) {
return event_info.instance_id == GetInstanceID();
}
if (event_info.window_type) {
int window_type_count = GetWindowTypeCount();
for (int i = 0; i < window_type_count; i++) {
std::string window_type;
if (GetWindowType(i, &window_type) &&
window_type == *event_info.window_type) {
return true;
}
}
return false;
}
if (event_info.has_window_exposed_by_default) {
// An event with a |window_exposed_by_default| set is only
// relevant to the listener if no window type filter is set.
if (GetWindowTypeCount() > 0) {
return false;
}
return event_info.window_exposed_by_default;
}
const std::string& service_type_filter = GetServiceTypeFilter();
return service_type_filter.empty() ||
(event_info.service_type &&
service_type_filter == *event_info.service_type);
}
int EventMatcher::GetURLFilterCount() const {
base::Value::List* url_filters = filter_->FindList(kUrlFiltersKey);
if (url_filters)
return url_filters->size();
return 0;
}
const base::Value::Dict* EventMatcher::GetURLFilter(int i) {
base::Value::List* url_filters = filter_->FindList(kUrlFiltersKey);
if (url_filters)
return (*url_filters)[i].GetIfDict();
return nullptr;
}
bool EventMatcher::HasURLFilters() const {
return GetURLFilterCount() != 0;
}
std::string EventMatcher::GetServiceTypeFilter() const {
std::string service_type_filter;
if (const std::string* ptr =
filter_->FindString(kEventFilterServiceTypeKey)) {
if (base::IsStringASCII(*ptr))
service_type_filter = *ptr;
}
return service_type_filter;
}
int EventMatcher::GetInstanceID() const {
return filter_->FindInt("instanceId").value_or(0);
}
int EventMatcher::GetWindowTypeCount() const {
base::Value::List* window_type_filters = filter_->FindList(kWindowTypesKey);
if (window_type_filters)
return window_type_filters->size();
return 0;
}
bool EventMatcher::GetWindowType(int i, std::string* window_type_out) const {
base::Value::List* window_types = filter_->FindList(kWindowTypesKey);
if (window_types) {
if (i >= 0 && static_cast<size_t>(i) < window_types->size() &&
(*window_types)[i].is_string()) {
*window_type_out = (*window_types)[i].GetString();
return true;
}
}
return false;
}
} // namespace extensions
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