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// Copyright (c) 2010 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.
#include "chrome/browser/extensions/extension_proxy_api.h"
#include "base/string_util.h"
#include "base/stringprintf.h"
#include "base/values.h"
#include "chrome/browser/prefs/proxy_prefs.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/common/pref_names.h"
namespace {
// The scheme for which to use a manually specified proxy, not of the proxy URI
// itself.
enum {
SCHEME_ALL = 0,
SCHEME_HTTP,
SCHEME_HTTPS,
SCHEME_FTP,
SCHEME_SOCKS,
SCHEME_MAX = SCHEME_SOCKS // Keep this value up to date.
};
// The names of the JavaScript properties to extract from the proxy_rules.
// These must be kept in sync with the SCHEME_* constants.
const char* field_name[] = { "singleProxy",
"proxyForHttp",
"proxyForHttps",
"proxyForFtp",
"socksProxy" };
// The names of the schemes to be used to build the preference value string
// for manual proxy settings. These must be kept in sync with the SCHEME_*
// constants.
const char* scheme_name[] = { "*error*",
"http",
"https",
"ftp",
"socks" };
} // namespace
COMPILE_ASSERT(SCHEME_MAX == SCHEME_SOCKS, SCHEME_MAX_must_equal_SCHEME_SOCKS);
COMPILE_ASSERT(arraysize(field_name) == SCHEME_MAX + 1,
field_name_array_is_wrong_size);
COMPILE_ASSERT(arraysize(scheme_name) == SCHEME_MAX + 1,
scheme_name_array_is_wrong_size);
bool UseCustomProxySettingsFunction::RunImpl() {
DictionaryValue* proxy_config;
EXTENSION_FUNCTION_VALIDATE(args_->GetDictionary(0, &proxy_config));
std::string proxy_mode;
proxy_config->GetString("mode", &proxy_mode);
DictionaryValue* pac_dict = NULL;
proxy_config->GetDictionary("pacScript", &pac_dict);
DictionaryValue* proxy_rules = NULL;
proxy_config->GetDictionary("rules", &proxy_rules);
// TODO(battre,gfeher): Make sure all the preferences get always
// overwritten.
return ApplyMode(proxy_mode) &&
ApplyPacScript(pac_dict) &&
ApplyProxyRules(proxy_rules);
}
bool UseCustomProxySettingsFunction::GetProxyServer(
const DictionaryValue* dict, ProxyServer* proxy_server) {
dict->GetString("scheme", &proxy_server->scheme);
EXTENSION_FUNCTION_VALIDATE(dict->GetString("host", &proxy_server->host));
dict->GetInteger("port", &proxy_server->port);
return true;
}
bool UseCustomProxySettingsFunction::ApplyMode(const std::string& mode) {
// We take control of the mode preference even if none was specified, so that
// all proxy preferences are controlled by the same extension (if not by a
// higher-priority source).
bool result = true;
ProxyPrefs::ProxyMode mode_enum;
if (!ProxyPrefs::StringToProxyMode(mode, &mode_enum)) {
mode_enum = ProxyPrefs::MODE_SYSTEM;
LOG(WARNING) << "Invalid mode for proxy settings: " << mode;
result = false;
}
ApplyPreference(prefs::kProxyMode, Value::CreateIntegerValue(mode_enum));
return result;
}
bool UseCustomProxySettingsFunction::ApplyPacScript(DictionaryValue* pac_dict) {
std::string pac_url;
if (pac_dict)
pac_dict->GetString("url", &pac_url);
// We take control of the PAC preference even if none was specified, so that
// all proxy preferences are controlled by the same extension (if not by a
// higher-priority source).
ApplyPreference(prefs::kProxyPacUrl, Value::CreateStringValue(pac_url));
return true;
}
bool UseCustomProxySettingsFunction::ApplyProxyRules(
DictionaryValue* proxy_rules) {
if (!proxy_rules) {
ApplyPreference(prefs::kProxyServer, Value::CreateStringValue(""));
return true;
}
// Local data into which the parameters will be parsed. has_proxy describes
// whether a setting was found for the scheme; proxy_dict holds the
// DictionaryValues which in turn contain proxy server descriptions, and
// proxy_server holds ProxyServer structs containing those descriptions.
bool has_proxy[SCHEME_MAX + 1];
DictionaryValue* proxy_dict[SCHEME_MAX + 1];
ProxyServer proxy_server[SCHEME_MAX + 1];
// Looking for all possible proxy types is inefficient if we have a
// singleProxy that will supersede per-URL proxies, but it's worth it to keep
// the code simple and extensible.
for (size_t i = 0; i <= SCHEME_MAX; ++i) {
has_proxy[i] = proxy_rules->GetDictionary(field_name[i], &proxy_dict[i]);
if (has_proxy[i]) {
if (!GetProxyServer(proxy_dict[i], &proxy_server[i]))
return false;
}
}
// A single proxy supersedes individual HTTP, HTTPS, and FTP proxies.
if (has_proxy[SCHEME_ALL]) {
proxy_server[SCHEME_HTTP] = proxy_server[SCHEME_ALL];
proxy_server[SCHEME_HTTPS] = proxy_server[SCHEME_ALL];
proxy_server[SCHEME_FTP] = proxy_server[SCHEME_ALL];
has_proxy[SCHEME_HTTP] = true;
has_proxy[SCHEME_HTTPS] = true;
has_proxy[SCHEME_FTP] = true;
has_proxy[SCHEME_ALL] = false;
}
// TODO(pamg): Ensure that if a value is empty, that means "don't use a proxy
// for this scheme".
// Build the proxy preference string.
std::string proxy_pref;
for (size_t i = 0; i <= SCHEME_MAX; ++i) {
if (has_proxy[i]) {
// http=foopy:4010;ftp=socks://foopy2:80
if (!proxy_pref.empty())
proxy_pref.append(";");
proxy_pref.append(scheme_name[i]);
proxy_pref.append("=");
proxy_pref.append(proxy_server[i].scheme);
proxy_pref.append("://");
proxy_pref.append(proxy_server[i].host);
if (proxy_server[i].port != ProxyServer::INVALID_PORT) {
proxy_pref.append(":");
proxy_pref.append(base::StringPrintf("%d", proxy_server[i].port));
}
}
}
ApplyPreference(prefs::kProxyServer, Value::CreateStringValue(proxy_pref));
return true;
}
void UseCustomProxySettingsFunction::ApplyPreference(const char* pref_path,
Value* pref_value) {
profile()->GetExtensionService()->extension_prefs()
->SetExtensionControlledPref(extension_id(), pref_path, pref_value);
}
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