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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_EXTENSIONS_EXTENSION_PROXY_API_H_
#define CHROME_BROWSER_EXTENSIONS_EXTENSION_PROXY_API_H_
#include <string>
#include "base/memory/singleton.h"
#include "chrome/browser/extensions/extension_preference_api.h"
#include "chrome/browser/prefs/proxy_prefs.h"
#include "chrome/browser/profiles/profile.h"
#include "net/proxy/proxy_config.h"
class DictionaryValue;
class ExtensionEventRouterForwarder;
// Class to convert between the representation of proxy settings used
// in the Proxy Settings API and the representation used in the PrefStores.
class ProxyPrefTransformer : public PrefTransformerInterface {
public:
ProxyPrefTransformer();
virtual ~ProxyPrefTransformer();
// Implementation of PrefTransformerInterface.
virtual Value* ExtensionToBrowserPref(const Value* extension_pref,
std::string* error) OVERRIDE;
virtual Value* BrowserToExtensionPref(const Value* browser_pref) OVERRIDE;
private:
// Helper functions for extension->browser pref transformation:
// The following functions extract one piece of data from the |proxy_config|
// each. |proxy_config| is a ProxyConfig dictionary as defined in the
// extension API.
//
// - If there are NO entries for the respective pieces of data, the functions
// return true.
// - If there ARE entries and they could be parsed, the functions set |out|
// and return true.
// - If there are entries that could not be parsed, the functions set |error|
// and return false.
bool GetProxyModeFromExtensionPref(const DictionaryValue* proxy_config,
ProxyPrefs::ProxyMode* out,
std::string* error) const;
bool GetPacUrlFromExtensionPref(const DictionaryValue* proxy_config,
std::string* out,
std::string* error) const;
bool GetPacDataFromExtensionPref(const DictionaryValue* proxy_config,
std::string* out,
std::string* error) const;
bool GetProxyRulesStringFromExtensionPref(const DictionaryValue* proxy_config,
std::string* out,
std::string* error) const;
bool GetBypassListFromExtensionPref(const DictionaryValue* proxy_config,
std::string *out,
std::string* error) const;
// Creates a Browser Pref dictionary from the given parameters. Depending on
// the value of |mode_enum|, several of the strings may be empty.
Value* ExtensionToBrowserPref(ProxyPrefs::ProxyMode mode_enum,
const std::string& pac_url,
const std::string& pac_data,
const std::string& proxy_rules_string,
const std::string& bypass_list,
std::string* error) const;
// Converts a ProxyServer dictionary instance |dict| as passed by the API
// caller (e.g. for the http proxy in the rules element) to a
// net::ProxyServer.
// Returns true if successful and sets |error| otherwise.
bool GetProxyServer(const DictionaryValue* dict,
net::ProxyServer::Scheme default_scheme,
net::ProxyServer* proxy_server,
std::string* error) const;
// Joins a list of URLs (stored as StringValues) in |list| with |joiner|
// to |out|. Returns true if successful and sets |error| otherwise.
bool JoinUrlList(ListValue* list,
const std::string& joiner,
std::string* out,
std::string* error) const;
// Helper functions for browser->extension pref transformation:
// Converts a net::ProxyConfig::ProxyRules object to a ProxyRules dictionary
// as defined in the extension API. Returns true if successful.
bool ConvertProxyRules(const net::ProxyConfig::ProxyRules& config,
DictionaryValue* extension_proxy_rules) const;
// Converts a net::ProxyServer object to a new ProxyServer dictionary as
// defined in the extension API.
void ConvertProxyServer(const net::ProxyServer& proxy,
DictionaryValue** extension_proxy_server) const;
DISALLOW_COPY_AND_ASSIGN(ProxyPrefTransformer);
};
// This class observes proxy error events and routes them to the appropriate
// extensions listening to those events. All methods must be called on the IO
// thread unless otherwise specified.
class ExtensionProxyEventRouter {
public:
static ExtensionProxyEventRouter* GetInstance();
void OnProxyError(ExtensionEventRouterForwarder* event_router,
ProfileId profile_id,
int error_code);
private:
friend struct DefaultSingletonTraits<ExtensionProxyEventRouter>;
ExtensionProxyEventRouter();
~ExtensionProxyEventRouter();
DISALLOW_COPY_AND_ASSIGN(ExtensionProxyEventRouter);
};
#endif // CHROME_BROWSER_EXTENSIONS_EXTENSION_PROXY_API_H_
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