// 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.
#ifndef NET_PROXY_PROXY_CONFIG_H_
#define NET_PROXY_PROXY_CONFIG_H_
#include <string>
#include "net/base/net_export.h"
#include "net/proxy/proxy_bypass_rules.h"
#include "net/proxy/proxy_config_source.h"
#include "net/proxy/proxy_list.h"
#include "net/proxy/proxy_server.h"
#include "url/gurl.h"
namespace base {
class Value;
}
namespace net {
class ProxyInfo;
// ProxyConfig describes a user's proxy settings.
//
// There are two categories of proxy settings:
// (1) Automatic (indicates the methods to obtain a PAC script)
// (2) Manual (simple set of proxy servers per scheme, and bypass patterns)
//
// When both automatic and manual settings are specified, the Automatic ones
// take precedence over the manual ones.
//
// For more details see:
// http://www.chromium.org/developers/design-documents/proxy-settings-fallback
class NET_EXPORT ProxyConfig {
public:
// ProxyRules describes the "manual" proxy settings.
// TODO(eroman): Turn this into a class.
// TODO(marq): Update the enum names; "TYPE_SINGLE_PROXY" really means
// the same set of proxies are used for all requests.
struct NET_EXPORT ProxyRules {
enum Type {
TYPE_NO_RULES,
TYPE_SINGLE_PROXY,
TYPE_PROXY_PER_SCHEME,
};
// Note that the default of TYPE_NO_RULES results in direct connections
// being made when using this ProxyConfig.
ProxyRules();
~ProxyRules();
bool empty() const {
return type == TYPE_NO_RULES;
}
// Sets |result| with the proxies to use for |url| based on the current
// rules.
void Apply(const GURL& url, ProxyInfo* result) const;
// Parses the rules from a string, indicating which proxies to use.
//
// proxy-uri = [<proxy-scheme>"://"]<proxy-host>[":"<proxy-port>]
//
// proxy-uri-list = <proxy-uri>[","<proxy-uri-list>]
//
// url-scheme = "http" | "https" | "ftp" | "socks"
//
// scheme-proxies = [<url-scheme>"="]<proxy-uri-list>
//
// proxy-rules = scheme-proxies[";"<scheme-proxies>]
//
// Thus, the proxy-rules string should be a semicolon-separated list of
// ordered proxies that apply to a particular URL scheme. Unless specified,
// the proxy scheme for proxy-uris is assumed to be http.
//
// Some special cases:
// * If the scheme is omitted from the first proxy list, that list applies
// to all URL schemes and subsequent lists are ignored.
// * If a scheme is omitted from any proxy list after a list where a scheme
// has been provided, the list without a scheme is ignored.
// * If the url-scheme is set to 'socks', that sets a fallback list that
// to all otherwise unspecified url-schemes, however the default proxy-
// scheme for proxy urls in the 'socks' list is understood to be
// socks4:// if unspecified.
//
// For example:
// "http=foopy:80;ftp=foopy2" -- use HTTP proxy "foopy:80" for http://
// URLs, and HTTP proxy "foopy2:80" for
// ftp:// URLs.
// "foopy:80" -- use HTTP proxy "foopy:80" for all URLs.
// "foopy:80,bar,direct://" -- use HTTP proxy "foopy:80" for all URLs,
// failing over to "bar" if "foopy:80" is
// unavailable, and after that using no
// proxy.
// "socks4://foopy" -- use SOCKS v4 proxy "foopy:1080" for all
// URLs.
// "http=foop,socks5://bar.com -- use HTTP proxy "foopy" for http URLs,
// and fail over to the SOCKS5 proxy
// "bar.com" if "foop" is unavailable.
// "http=foopy,direct:// -- use HTTP proxy "foopy" for http URLs,
// and use no proxy if "foopy" is
// unavailable.
// "http=foopy;socks=foopy2 -- use HTTP proxy "foopy" for http URLs,
// and use socks4://foopy2 for all other
// URLs.
void ParseFromString(const std::string& proxy_rules);
// Returns one of {&proxies_for_http, &proxies_for_https, &proxies_for_ftp,
// &fallback_proxies}, or NULL if there is no proxy to use.
// Should only call this if the type is TYPE_PROXY_PER_SCHEME.
const ProxyList* MapUrlSchemeToProxyList(
const std::string& url_scheme) const;
// Returns true if |*this| describes the same configuration as |other|.
bool Equals(const ProxyRules& other) const;
// Exceptions for when not to use a proxy.
ProxyBypassRules bypass_rules;
// Reverse the meaning of |bypass_rules|.
bool reverse_bypass;
Type type;
// Set if |type| is TYPE_SINGLE_PROXY.
ProxyList single_proxies;
// Set if |type| is TYPE_PROXY_PER_SCHEME.
ProxyList proxies_for_http;
ProxyList proxies_for_https;
ProxyList proxies_for_ftp;
// Used when a fallback has been defined and the url to be proxied doesn't
// match any of the standard schemes.
ProxyList fallback_proxies;
private:
// Returns one of {&proxies_for_http, &proxies_for_https, &proxies_for_ftp}
// or NULL if it is a scheme that we don't have a mapping
// for. Should only call this if the type is TYPE_PROXY_PER_SCHEME.
ProxyList* MapUrlSchemeToProxyListNoFallback(const std::string& scheme);
};
typedef int ID;
// Indicates an invalid proxy config.
static const ID kInvalidConfigID = 0;
ProxyConfig();
ProxyConfig(const ProxyConfig& config);
~ProxyConfig();
ProxyConfig& operator=(const ProxyConfig& config);
// Used to numerically identify this configuration.
ID id() const { return id_; }
void set_id(ID id) { id_ = id; }
bool is_valid() const { return id_ != kInvalidConfigID; }
// Returns true if the given config is equivalent to this config. The
// comparison ignores differences in |id()| and |source()|.
bool Equals(const ProxyConfig& other) const;
// Returns true if this config contains any "automatic" settings. See the
// class description for what that means.
bool HasAutomaticSettings() const;
void ClearAutomaticSettings();
// Creates a Value dump of this configuration. The caller is responsible for
// deleting the returned value.
base::DictionaryValue* ToValue() const;
ProxyRules& proxy_rules() {
return proxy_rules_;
}
const ProxyRules& proxy_rules() const {
return proxy_rules_;
}
void set_pac_url(const GURL& url) {
pac_url_ = url;
}
const GURL& pac_url() const {
return pac_url_;
}
void set_pac_mandatory(bool enable_pac_mandatory) {
pac_mandatory_ = enable_pac_mandatory;
}
bool pac_mandatory() const {
return pac_mandatory_;
}
bool has_pac_url() const {
return pac_url_.is_valid();
}
void set_auto_detect(bool enable_auto_detect) {
auto_detect_ = enable_auto_detect;
}
bool auto_detect() const {
return auto_detect_;
}
void set_source(ProxyConfigSource source) {
source_ = source;
}
ProxyConfigSource source() const {
return source_;
}
// Helpers to construct some common proxy configurations.
static ProxyConfig CreateDirect() {
return ProxyConfig();
}
static ProxyConfig CreateAutoDetect() {
ProxyConfig config;
config.set_auto_detect(true);
return config;
}
static ProxyConfig CreateFromCustomPacURL(const GURL& pac_url) {
ProxyConfig config;
config.set_pac_url(pac_url);
// By default fall back to direct connection in case PAC script fails.
config.set_pac_mandatory(false);
return config;
}
private:
// True if the proxy configuration should be auto-detected.
bool auto_detect_;
// If non-empty, indicates the URL of the proxy auto-config file to use.
GURL pac_url_;
// If true, blocks all traffic in case fetching the pac script from |pac_url_|
// fails. Only valid if |pac_url_| is non-empty.
bool pac_mandatory_;
// Manual proxy settings.
ProxyRules proxy_rules_;
// Source of proxy settings.
ProxyConfigSource source_;
ID id_;
};
} // namespace net
#endif // NET_PROXY_PROXY_CONFIG_H_