cef/libcef/browser/origin_whitelist_impl.cc

309 lines
9.3 KiB
C++

// Copyright (c) 2011 The Chromium Embedded Framework 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 "libcef/browser/origin_whitelist_impl.h"
#include <string>
#include <vector>
#include "include/cef_origin_whitelist.h"
#include "libcef/browser/browser_manager.h"
#include "libcef/browser/context.h"
#include "libcef/browser/thread_util.h"
#include "base/bind.h"
#include "base/lazy_instance.h"
#include "base/synchronization/lock.h"
#include "cef/libcef/common/mojom/cef.mojom.h"
#include "chrome/common/webui_url_constants.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/common/url_constants.h"
#include "extensions/common/constants.h"
#include "url/gurl.h"
#include "url/origin.h"
namespace {
// Class that manages cross-origin whitelist registrations.
class CefOriginWhitelistManager {
public:
CefOriginWhitelistManager() = default;
CefOriginWhitelistManager(const CefOriginWhitelistManager&) = delete;
CefOriginWhitelistManager& operator=(const CefOriginWhitelistManager&) =
delete;
// Retrieve the singleton instance.
static CefOriginWhitelistManager* GetInstance();
bool AddOriginEntry(const std::string& source_origin,
const std::string& target_protocol,
const std::string& target_domain,
bool allow_target_subdomains) {
auto info = cef::mojom::CrossOriginWhiteListEntry::New();
info->source_origin = source_origin;
info->target_protocol = target_protocol;
info->target_domain = target_domain;
info->allow_target_subdomains = allow_target_subdomains;
{
base::AutoLock lock_scope(lock_);
// Verify that the origin entry doesn't already exist.
for (const auto& entry : origin_list_) {
if (entry == info)
return false;
}
origin_list_.push_back(info->Clone());
}
SendModifyCrossOriginWhitelistEntry(true, info);
return true;
}
bool RemoveOriginEntry(const std::string& source_origin,
const std::string& target_protocol,
const std::string& target_domain,
bool allow_target_subdomains) {
auto info = cef::mojom::CrossOriginWhiteListEntry::New();
info->source_origin = source_origin;
info->target_protocol = target_protocol;
info->target_domain = target_domain;
info->allow_target_subdomains = allow_target_subdomains;
bool found = false;
{
base::AutoLock lock_scope(lock_);
CrossOriginWhiteList::iterator it = origin_list_.begin();
for (; it != origin_list_.end(); ++it) {
if (*it == info) {
origin_list_.erase(it);
found = true;
break;
}
}
}
if (!found)
return false;
SendModifyCrossOriginWhitelistEntry(false, info);
return true;
}
void ClearOrigins() {
{
base::AutoLock lock_scope(lock_);
origin_list_.clear();
}
SendClearCrossOriginWhitelist();
}
void GetCrossOriginWhitelistEntries(
absl::optional<CrossOriginWhiteList>* entries) const {
base::AutoLock lock_scope(lock_);
if (!origin_list_.empty()) {
CrossOriginWhiteList vec;
for (const auto& entry : origin_list_) {
vec.push_back(entry->Clone());
}
*entries = std::move(vec);
}
}
bool HasCrossOriginWhitelistEntry(const url::Origin& source,
const url::Origin& target) const {
base::AutoLock lock_scope(lock_);
if (!origin_list_.empty()) {
for (const auto& entry : origin_list_) {
if (IsMatch(source, target, entry))
return true;
}
}
return false;
}
private:
// Send the modify cross-origin whitelist entry message to all currently
// existing hosts.
static void SendModifyCrossOriginWhitelistEntry(
bool add,
const cef::mojom::CrossOriginWhiteListEntryPtr& info) {
CEF_REQUIRE_UIT();
content::RenderProcessHost::iterator i(
content::RenderProcessHost::AllHostsIterator());
for (; !i.IsAtEnd(); i.Advance()) {
auto render_manager =
CefBrowserManager::GetRenderManagerForProcess(i.GetCurrentValue());
render_manager->ModifyCrossOriginWhitelistEntry(add, info->Clone());
}
}
// Send the clear cross-origin whitelists message to all currently existing
// hosts.
static void SendClearCrossOriginWhitelist() {
CEF_REQUIRE_UIT();
content::RenderProcessHost::iterator i(
content::RenderProcessHost::AllHostsIterator());
for (; !i.IsAtEnd(); i.Advance()) {
auto render_manager =
CefBrowserManager::GetRenderManagerForProcess(i.GetCurrentValue());
render_manager->ClearCrossOriginWhitelist();
}
}
static bool IsMatch(const url::Origin& source_origin,
const url::Origin& target_origin,
const cef::mojom::CrossOriginWhiteListEntryPtr& param) {
if (!source_origin.IsSameOriginWith(
url::Origin::Create(GURL(param->source_origin)))) {
// Source origin does not match.
return false;
}
if (target_origin.scheme() != param->target_protocol) {
// Target scheme does not match.
return false;
}
if (param->allow_target_subdomains) {
if (param->target_domain.empty()) {
// Any domain will match.
return true;
} else {
// Match sub-domains.
return target_origin.DomainIs(param->target_domain.c_str());
}
} else {
// Match full domain.
return (target_origin.host() == param->target_domain);
}
}
mutable base::Lock lock_;
// List of registered origins. Access must be protected by |lock_|.
CrossOriginWhiteList origin_list_;
};
base::LazyInstance<CefOriginWhitelistManager>::Leaky g_manager =
LAZY_INSTANCE_INITIALIZER;
CefOriginWhitelistManager* CefOriginWhitelistManager::GetInstance() {
return g_manager.Pointer();
}
} // namespace
bool CefAddCrossOriginWhitelistEntry(const CefString& source_origin,
const CefString& target_protocol,
const CefString& target_domain,
bool allow_target_subdomains) {
// Verify that the context is in a valid state.
if (!CONTEXT_STATE_VALID()) {
NOTREACHED();
return false;
}
std::string source_url = source_origin;
GURL gurl = GURL(source_url);
if (gurl.is_empty() || !gurl.is_valid()) {
NOTREACHED() << "Invalid source_origin URL: " << source_url;
return false;
}
if (CEF_CURRENTLY_ON_UIT()) {
return CefOriginWhitelistManager::GetInstance()->AddOriginEntry(
source_origin, target_protocol, target_domain, allow_target_subdomains);
} else {
CEF_POST_TASK(
CEF_UIT,
base::BindOnce(base::IgnoreResult(&CefAddCrossOriginWhitelistEntry),
source_origin, target_protocol, target_domain,
allow_target_subdomains));
}
return true;
}
bool CefRemoveCrossOriginWhitelistEntry(const CefString& source_origin,
const CefString& target_protocol,
const CefString& target_domain,
bool allow_target_subdomains) {
// Verify that the context is in a valid state.
if (!CONTEXT_STATE_VALID()) {
NOTREACHED();
return false;
}
std::string source_url = source_origin;
GURL gurl = GURL(source_url);
if (gurl.is_empty() || !gurl.is_valid()) {
NOTREACHED() << "Invalid source_origin URL: " << source_url;
return false;
}
if (CEF_CURRENTLY_ON_UIT()) {
return CefOriginWhitelistManager::GetInstance()->RemoveOriginEntry(
source_origin, target_protocol, target_domain, allow_target_subdomains);
} else {
CEF_POST_TASK(
CEF_UIT,
base::BindOnce(base::IgnoreResult(&CefRemoveCrossOriginWhitelistEntry),
source_origin, target_protocol, target_domain,
allow_target_subdomains));
}
return true;
}
bool CefClearCrossOriginWhitelist() {
// Verify that the context is in a valid state.
if (!CONTEXT_STATE_VALID()) {
NOTREACHED();
return false;
}
if (CEF_CURRENTLY_ON_UIT()) {
CefOriginWhitelistManager::GetInstance()->ClearOrigins();
} else {
CEF_POST_TASK(
CEF_UIT,
base::BindOnce(base::IgnoreResult(&CefClearCrossOriginWhitelist)));
}
return true;
}
void GetCrossOriginWhitelistEntries(
absl::optional<CrossOriginWhiteList>* entries) {
CefOriginWhitelistManager::GetInstance()->GetCrossOriginWhitelistEntries(
entries);
}
bool HasCrossOriginWhitelistEntry(const url::Origin& source,
const url::Origin& target) {
// Components of chrome that are implemented as extensions or platform apps
// are allowed to use chrome://resources/ and chrome://theme/ URLs.
// See also RegisterNonNetworkSubresourceURLLoaderFactories.
if (source.scheme() == extensions::kExtensionScheme &&
target.scheme() == content::kChromeUIScheme &&
(target.host() == chrome::kChromeUIThemeHost ||
target.host() == content::kChromeUIResourcesHost)) {
return true;
}
return CefOriginWhitelistManager::GetInstance()->HasCrossOriginWhitelistEntry(
source, target);
}