cef/libcef/browser/origin_whitelist_impl.cc

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// 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/context.h"
#include "libcef/browser/thread_util.h"
#include "libcef/common/cef_messages.h"
#include "base/bind.h"
#include "base/lazy_instance.h"
#include "base/synchronization/lock.h"
#include "content/public/browser/render_process_host.h"
#include "googleurl/src/gurl.h"
namespace {
// Class that manages cross-origin whitelist registrations.
class CefOriginWhitelistManager {
public:
CefOriginWhitelistManager() {}
// 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) {
Cef_CrossOriginWhiteListEntry_Params info;
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.
OriginList::const_iterator it = origin_list_.begin();
for (; it != origin_list_.end(); ++it) {
if (IsEqual(*it, info))
return false;
}
origin_list_.push_back(info);
}
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) {
Cef_CrossOriginWhiteListEntry_Params info;
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_);
OriginList::iterator it = origin_list_.begin();
for (; it != origin_list_.end(); ++it) {
if (IsEqual(*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(
std::vector<Cef_CrossOriginWhiteListEntry_Params>* entries) {
base::AutoLock lock_scope(lock_);
if (origin_list_.empty())
return;
entries->insert(entries->end(), origin_list_.begin(), origin_list_.end());
}
private:
// Send the modify cross-origin whitelist entry message to all currently
// existing hosts.
static void SendModifyCrossOriginWhitelistEntry(
bool add,
Cef_CrossOriginWhiteListEntry_Params& params) {
CEF_REQUIRE_UIT();
content::RenderProcessHost::iterator i(
content::RenderProcessHost::AllHostsIterator());
for (; !i.IsAtEnd(); i.Advance()) {
i.GetCurrentValue()->Send(
new CefProcessMsg_ModifyCrossOriginWhitelistEntry(add, params));
}
}
// 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()) {
i.GetCurrentValue()->Send(new CefProcessMsg_ClearCrossOriginWhitelist);
}
}
static bool IsEqual(const Cef_CrossOriginWhiteListEntry_Params& param1,
const Cef_CrossOriginWhiteListEntry_Params& param2) {
return (param1.source_origin == param2.source_origin &&
param1.target_protocol == param2.target_protocol &&
param1.target_domain == param2.target_domain &&
param1.allow_target_subdomains == param2.allow_target_subdomains);
}
base::Lock lock_;
// List of registered origins. Access must be protected by |lock_|.
typedef std::vector<Cef_CrossOriginWhiteListEntry_Params> OriginList;
OriginList origin_list_;
DISALLOW_EVIL_CONSTRUCTORS(CefOriginWhitelistManager);
};
base::LazyInstance<CefOriginWhitelistManager> g_manager =
LAZY_INSTANCE_INITIALIZER;
CefOriginWhitelistManager* CefOriginWhitelistManager::GetInstance() {
return g_manager.Pointer();
}
bool IsMatch(const GURL& source_origin,
const GURL& target_origin,
const Cef_CrossOriginWhiteListEntry_Params& param) {
if (source_origin.GetOrigin() != 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);
}
}
} // 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::Bind(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::Bind(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::Bind(base::IgnoreResult(&CefClearCrossOriginWhitelist)));
}
return true;
}
void GetCrossOriginWhitelistEntries(
std::vector<Cef_CrossOriginWhiteListEntry_Params>* entries) {
CefOriginWhitelistManager::GetInstance()->GetCrossOriginWhitelistEntries(
entries);
}
bool HasCrossOriginWhitelistEntry(const GURL& source, const GURL& target) {
std::vector<Cef_CrossOriginWhiteListEntry_Params> params;
CefOriginWhitelistManager::GetInstance()->GetCrossOriginWhitelistEntries(
&params);
if (params.empty())
return false;
std::vector<Cef_CrossOriginWhiteListEntry_Params>::const_iterator it =
params.begin();
for (; it != params.end(); ++it) {
if (IsMatch(source, target, *it))
return true;
}
return false;
}