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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 "base/json/json_writer.h"
#include "base/stringprintf.h"
#include "base/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 "chrome/browser/prefs/proxy_config_dictionary.h"
#include "net/base/net_errors.h"
namespace extensions {
namespace helpers = proxy_api_helpers;
namespace keys = proxy_api_constants;
// static
ProxyEventRouter* ProxyEventRouter::GetInstance() {
return Singleton<ProxyEventRouter>::get();
}
ProxyEventRouter::ProxyEventRouter() {
}
ProxyEventRouter::~ProxyEventRouter() {
}
void ProxyEventRouter::OnProxyError(
EventRouterForwarder* event_router,
void* profile,
int error_code) {
scoped_ptr<ListValue> args(new ListValue());
DictionaryValue* dict = new DictionaryValue();
dict->SetBoolean(keys::kProxyEventFatal, true);
dict->SetString(keys::kProxyEventError, net::ErrorToString(error_code));
dict->SetString(keys::kProxyEventDetails, "");
args->Append(dict);
if (profile) {
event_router->DispatchEventToRenderers(
keys::kProxyEventOnProxyError, args.Pass(), profile, true, GURL());
} else {
event_router->BroadcastEventToRenderers(
keys::kProxyEventOnProxyError, args.Pass(), GURL());
}
}
void ProxyEventRouter::OnPACScriptError(
EventRouterForwarder* event_router,
void* profile,
int line_number,
const string16& error) {
scoped_ptr<ListValue> args(new ListValue());
DictionaryValue* dict = new DictionaryValue();
dict->SetBoolean(keys::kProxyEventFatal, false);
dict->SetString(keys::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, UTF16ToUTF8(error).c_str());
} else {
error_msg = UTF16ToUTF8(error);
}
dict->SetString(keys::kProxyEventDetails, error_msg);
args->Append(dict);
if (profile) {
event_router->DispatchEventToRenderers(
keys::kProxyEventOnProxyError, args.Pass(), profile, true, GURL());
} else {
event_router->BroadcastEventToRenderers(
keys::kProxyEventOnProxyError, args.Pass(), GURL());
}
}
ProxyPrefTransformer::ProxyPrefTransformer() {
}
ProxyPrefTransformer::~ProxyPrefTransformer() {
}
Value* ProxyPrefTransformer::ExtensionToBrowserPref(const 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->IsType(Value::TYPE_DICTIONARY));
const DictionaryValue* config =
static_cast<const 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 (!helpers::GetProxyModeFromExtensionPref(
config, &mode_enum, error, bad_message) ||
!helpers::GetPacMandatoryFromExtensionPref(
config, &pac_mandatory, error, bad_message) ||
!helpers::GetPacUrlFromExtensionPref(
config, &pac_url, error, bad_message) ||
!helpers::GetPacDataFromExtensionPref(
config, &pac_data, error, bad_message) ||
!helpers::GetProxyRulesStringFromExtensionPref(
config, &proxy_rules_string, error, bad_message) ||
!helpers::GetBypassListFromExtensionPref(
config, &bypass_list, error, bad_message)) {
return NULL;
}
return helpers::CreateProxyConfigDict(
mode_enum, pac_mandatory, pac_url, pac_data, proxy_rules_string,
bypass_list, error);
}
Value* ProxyPrefTransformer::BrowserToExtensionPref(const Value* browser_pref) {
CHECK(browser_pref->IsType(Value::TYPE_DICTIONARY));
// This is a dictionary wrapper that exposes the proxy configuration stored in
// the browser preferences.
ProxyConfigDictionary config(
static_cast<const DictionaryValue*>(browser_pref));
ProxyPrefs::ProxyMode mode;
if (!config.GetMode(&mode)) {
LOG(ERROR) << "Cannot determine proxy mode.";
return NULL;
}
// Build a new ProxyConfig instance as defined in the extension API.
scoped_ptr<DictionaryValue> extension_pref(new DictionaryValue);
extension_pref->SetString(keys::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.
DictionaryValue* pac_dict = helpers::CreatePacScriptDict(config);
if (!pac_dict)
return NULL;
extension_pref->Set(keys::kProxyConfigPacScript, pac_dict);
break;
}
case ProxyPrefs::MODE_FIXED_SERVERS: {
// Build ProxyRules dictionary according to the extension API.
DictionaryValue* proxy_rules_dict = helpers::CreateProxyRulesDict(config);
if (!proxy_rules_dict)
return NULL;
extension_pref->Set(keys::kProxyConfigRules, proxy_rules_dict);
break;
}
case ProxyPrefs::kModeCount:
NOTREACHED();
}
return extension_pref.release();
}
} // namespace extensions
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