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// Copyright (c) 2011 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.
#ifndef CHROME_BROWSER_CHROMEOS_PLUGIN_SELECTION_POLICY_H_
#define CHROME_BROWSER_CHROMEOS_PLUGIN_SELECTION_POLICY_H_
#include <map>
#include <string>
#include <vector>
#include "base/gtest_prod_util.h"
#include "base/memory/ref_counted.h"
#include "webkit/plugins/npapi/webplugininfo.h"
class GURL;
class FilePath;
namespace chromeos {
#if !defined(OS_CHROMEOS)
#error This file is meant to be compiled on ChromeOS only.
#endif
// This class is used to provide logic for selection of a plugin
// executable path in the browser. It loads a policy file for
// selection of particular plugins based on the domain they are be
// instantiated for. It is used by the PluginService. It is (and
// should be) only used for ChromeOS.
// The functions in this class must only be called on the FILE thread
// (and will DCHECK if they aren't).
class PluginSelectionPolicy
: public base::RefCountedThreadSafe<PluginSelectionPolicy> {
public:
PluginSelectionPolicy();
~PluginSelectionPolicy();
// This should be called before any other method. This starts the
// process of initialization on the FILE thread.
void StartInit();
// Returns the first allowed plugin in the given vector of plugin
// information. Returns -1 if no plugins in the info vector are
// allowed (or if the info vector is empty). InitFromFile must
// complete before any calls to FindFirstAllowed happen or it will
// assert.
int FindFirstAllowed(const GURL& url,
const std::vector<webkit::npapi::WebPluginInfo>& info);
// Applies the current policy to the given path using the url to
// look up what the policy for that domain is. Returns true if the
// given plugin is allowed for that domain. InitFromFile must
// complete before any calls to IsAllowed happen or it will assert.
bool IsAllowed(const GURL& url, const FilePath& path);
private:
// To allow access to InitFromFile
FRIEND_TEST_ALL_PREFIXES(PluginSelectionPolicyTest, Basic);
FRIEND_TEST_ALL_PREFIXES(PluginSelectionPolicyTest, FindFirstAllowed);
FRIEND_TEST_ALL_PREFIXES(PluginSelectionPolicyTest, InitFromFile);
FRIEND_TEST_ALL_PREFIXES(PluginSelectionPolicyTest, IsAllowed);
FRIEND_TEST_ALL_PREFIXES(PluginSelectionPolicyTest, MissingFile);
// Initializes from the default policy file.
bool Init();
// Initializes from the given file.
bool InitFromFile(const FilePath& policy_file);
typedef std::vector<std::pair<bool, std::string> > Policy;
typedef std::map<std::string, Policy> PolicyMap;
PolicyMap policies_;
// This is used to DCHECK if we try and call IsAllowed or
// FindFirstAllowed before we've finished executing InitFromFile.
// Note: We're "finished" even if loading the file fails -- the
// point of the DCHECK is to make sure we haven't violated our
// ordering/threading assumptions, not to make sure that we're
// properly initialized.
bool init_from_file_finished_;
DISALLOW_COPY_AND_ASSIGN(PluginSelectionPolicy);
};
} // namespace chromeos
#endif // CHROME_BROWSER_CHROMEOS_PLUGIN_SELECTION_POLICY_H_
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