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// Copyright 2013 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 "extensions/browser/process_map.h"
#include <tuple>
#include "content/public/browser/child_process_security_policy.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/browser/process_map_factory.h"
#include "extensions/common/extension.h"
#include "extensions/common/features/feature.h"
namespace extensions {
// Item
struct ProcessMap::Item {
Item() : process_id(0), site_instance_id(0) {
}
// Purposely implicit constructor needed on older gcc's. See:
// http://codereview.chromium.org/8769022/
explicit Item(const ProcessMap::Item& other)
: extension_id(other.extension_id),
process_id(other.process_id),
site_instance_id(other.site_instance_id) {
}
Item(const std::string& extension_id, int process_id,
int site_instance_id)
: extension_id(extension_id),
process_id(process_id),
site_instance_id(site_instance_id) {
}
~Item() {
}
bool operator<(const ProcessMap::Item& other) const {
return std::tie(extension_id, process_id, site_instance_id) <
std::tie(other.extension_id, other.process_id,
other.site_instance_id);
}
std::string extension_id;
int process_id;
int site_instance_id;
};
// ProcessMap
ProcessMap::ProcessMap() {
}
ProcessMap::~ProcessMap() {
}
// static
ProcessMap* ProcessMap::Get(content::BrowserContext* browser_context) {
return ProcessMapFactory::GetForBrowserContext(browser_context);
}
bool ProcessMap::Insert(const std::string& extension_id, int process_id,
int site_instance_id) {
return items_.insert(Item(extension_id, process_id, site_instance_id)).second;
}
bool ProcessMap::Remove(const std::string& extension_id, int process_id,
int site_instance_id) {
return items_.erase(Item(extension_id, process_id, site_instance_id)) > 0;
}
int ProcessMap::RemoveAllFromProcess(int process_id) {
int result = 0;
for (ItemSet::iterator iter = items_.begin(); iter != items_.end(); ) {
if (iter->process_id == process_id) {
items_.erase(iter++);
++result;
} else {
++iter;
}
}
return result;
}
bool ProcessMap::Contains(const std::string& extension_id,
int process_id) const {
for (ItemSet::const_iterator iter = items_.begin(); iter != items_.end();
++iter) {
if (iter->process_id == process_id && iter->extension_id == extension_id)
return true;
}
return false;
}
bool ProcessMap::Contains(int process_id) const {
for (ItemSet::const_iterator iter = items_.begin(); iter != items_.end();
++iter) {
if (iter->process_id == process_id)
return true;
}
return false;
}
std::set<std::string> ProcessMap::GetExtensionsInProcess(int process_id) const {
std::set<std::string> result;
for (ItemSet::const_iterator iter = items_.begin(); iter != items_.end();
++iter) {
if (iter->process_id == process_id)
result.insert(iter->extension_id);
}
return result;
}
Feature::Context ProcessMap::GetMostLikelyContextType(
const Extension* extension,
int process_id) const {
// WARNING: This logic must match Dispatcher::ClassifyJavaScriptContext, as
// much as possible.
if (content::ChildProcessSecurityPolicy::GetInstance()->HasWebUIBindings(
process_id)) {
return Feature::WEBUI_CONTEXT;
}
if (!extension) {
return Feature::WEB_PAGE_CONTEXT;
}
if (!Contains(extension->id(), process_id)) {
// This could equally be UNBLESSED_EXTENSION_CONTEXT, but we don't record
// which processes have extension frames in them.
// TODO(kalman): Investigate this.
return Feature::CONTENT_SCRIPT_CONTEXT;
}
if (extension->is_hosted_app() &&
extension->location() != Manifest::COMPONENT) {
return Feature::BLESSED_WEB_PAGE_CONTEXT;
}
return Feature::BLESSED_EXTENSION_CONTEXT;
}
} // namespace extensions
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