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// Copyright (c) 2012 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.
// Implementation of the Chrome Extensions Proxy Settings API.
#include "chrome/browser/extensions/api/proxy/proxy_api.h"
#include <memory>
#include <utility>
#include "base/json/json_writer.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "base/values.h"
#include "chrome/browser/extensions/api/proxy/proxy_api_constants.h"
#include "chrome/browser/extensions/api/proxy/proxy_api_helpers.h"
#include "chrome/browser/extensions/event_router_forwarder.h"
#include "chrome/browser/extensions/extension_service.h"
#include "components/proxy_config/proxy_config_dictionary.h"
#include "net/base/net_errors.h"
namespace extensions {
// static
ProxyEventRouter* ProxyEventRouter::GetInstance() {
return base::Singleton<ProxyEventRouter>::get();
}
ProxyEventRouter::ProxyEventRouter() {
}
ProxyEventRouter::~ProxyEventRouter() {
}
void ProxyEventRouter::OnProxyError(
EventRouterForwarder* event_router,
void* profile,
int error_code) {
std::unique_ptr<base::ListValue> args(new base::ListValue());
std::unique_ptr<base::DictionaryValue> dict(new base::DictionaryValue());
dict->SetBoolean(proxy_api_constants::kProxyEventFatal, true);
dict->SetString(proxy_api_constants::kProxyEventError,
net::ErrorToString(error_code));
dict->SetString(proxy_api_constants::kProxyEventDetails, std::string());
args->Append(std::move(dict));
if (profile) {
event_router->DispatchEventToRenderers(
events::PROXY_ON_PROXY_ERROR,
proxy_api_constants::kProxyEventOnProxyError, std::move(args), profile,
true, GURL());
} else {
event_router->BroadcastEventToRenderers(
events::PROXY_ON_PROXY_ERROR,
proxy_api_constants::kProxyEventOnProxyError, std::move(args), GURL());
}
}
void ProxyEventRouter::OnPACScriptError(
EventRouterForwarder* event_router,
void* profile,
int line_number,
const base::string16& error) {
std::unique_ptr<base::ListValue> args(new base::ListValue());
std::unique_ptr<base::DictionaryValue> dict(new base::DictionaryValue());
dict->SetBoolean(proxy_api_constants::kProxyEventFatal, false);
dict->SetString(proxy_api_constants::kProxyEventError,
net::ErrorToString(net::ERR_PAC_SCRIPT_FAILED));
std::string error_msg;
if (line_number != -1) {
base::SStringPrintf(&error_msg,
"line: %d: %s",
line_number, base::UTF16ToUTF8(error).c_str());
} else {
error_msg = base::UTF16ToUTF8(error);
}
dict->SetString(proxy_api_constants::kProxyEventDetails, error_msg);
args->Append(std::move(dict));
if (profile) {
event_router->DispatchEventToRenderers(
events::PROXY_ON_PROXY_ERROR,
proxy_api_constants::kProxyEventOnProxyError, std::move(args), profile,
true, GURL());
} else {
event_router->BroadcastEventToRenderers(
events::PROXY_ON_PROXY_ERROR,
proxy_api_constants::kProxyEventOnProxyError, std::move(args), GURL());
}
}
ProxyPrefTransformer::ProxyPrefTransformer() {
}
ProxyPrefTransformer::~ProxyPrefTransformer() {
}
std::unique_ptr<base::Value> ProxyPrefTransformer::ExtensionToBrowserPref(
const base::Value* extension_pref,
std::string* error,
bool* bad_message) {
// When ExtensionToBrowserPref is called, the format of |extension_pref|
// has been verified already by the extension API to match the schema
// defined in the extension API JSON.
CHECK(extension_pref->is_dict());
const base::DictionaryValue* config =
static_cast<const base::DictionaryValue*>(extension_pref);
// Extract the various pieces of information passed to
// chrome.proxy.settings.set(). Several of these strings will
// remain blank no respective values have been passed to set().
// If a values has been passed to set but could not be parsed, we bail
// out and return null.
ProxyPrefs::ProxyMode mode_enum;
bool pac_mandatory;
std::string pac_url;
std::string pac_data;
std::string proxy_rules_string;
std::string bypass_list;
if (!proxy_api_helpers::GetProxyModeFromExtensionPref(config, &mode_enum,
error, bad_message) ||
!proxy_api_helpers::GetPacMandatoryFromExtensionPref(
config, &pac_mandatory, error, bad_message) ||
!proxy_api_helpers::GetPacUrlFromExtensionPref(config, &pac_url, error,
bad_message) ||
!proxy_api_helpers::GetPacDataFromExtensionPref(config, &pac_data, error,
bad_message) ||
!proxy_api_helpers::GetProxyRulesStringFromExtensionPref(
config, &proxy_rules_string, error, bad_message) ||
!proxy_api_helpers::GetBypassListFromExtensionPref(config, &bypass_list,
error, bad_message)) {
return nullptr;
}
return proxy_api_helpers::CreateProxyConfigDict(
mode_enum, pac_mandatory, pac_url, pac_data, proxy_rules_string,
bypass_list, error);
}
std::unique_ptr<base::Value> ProxyPrefTransformer::BrowserToExtensionPref(
const base::Value* browser_pref) {
CHECK(browser_pref->is_dict());
// This is a dictionary wrapper that exposes the proxy configuration stored in
// the browser preferences.
ProxyConfigDictionary config(browser_pref->Clone());
ProxyPrefs::ProxyMode mode;
if (!config.GetMode(&mode)) {
LOG(ERROR) << "Cannot determine proxy mode.";
return nullptr;
}
// Build a new ProxyConfig instance as defined in the extension API.
std::unique_ptr<base::DictionaryValue> extension_pref(
new base::DictionaryValue);
extension_pref->SetString(proxy_api_constants::kProxyConfigMode,
ProxyPrefs::ProxyModeToString(mode));
switch (mode) {
case ProxyPrefs::MODE_DIRECT:
case ProxyPrefs::MODE_AUTO_DETECT:
case ProxyPrefs::MODE_SYSTEM:
// These modes have no further parameters.
break;
case ProxyPrefs::MODE_PAC_SCRIPT: {
// A PAC URL either point to a PAC script or contain a base64 encoded
// PAC script. In either case we build a PacScript dictionary as defined
// in the extension API.
std::unique_ptr<base::DictionaryValue> pac_dict =
proxy_api_helpers::CreatePacScriptDict(config);
if (!pac_dict)
return nullptr;
extension_pref->Set(proxy_api_constants::kProxyConfigPacScript,
std::move(pac_dict));
break;
}
case ProxyPrefs::MODE_FIXED_SERVERS: {
// Build ProxyRules dictionary according to the extension API.
std::unique_ptr<base::DictionaryValue> proxy_rules_dict =
proxy_api_helpers::CreateProxyRulesDict(config);
if (!proxy_rules_dict)
return nullptr;
extension_pref->Set(proxy_api_constants::kProxyConfigRules,
std::move(proxy_rules_dict));
break;
}
case ProxyPrefs::kModeCount:
NOTREACHED();
}
return extension_pref;
}
} // namespace extensions
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