// 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 NET_PROXY_PROXY_BYPASS_RULES_H_
#define NET_PROXY_PROXY_BYPASS_RULES_H_
#include <string>
#include <vector>
#include "net/base/net_export.h"
#include "url/gurl.h"
namespace net {
// ProxyBypassRules describes the set of URLs that should bypass the proxy
// settings, as a list of rules. A URL is said to match the bypass rules
// if it matches any one of these rules.
class NET_EXPORT ProxyBypassRules {
public:
// Interface for an individual proxy bypass rule.
class NET_EXPORT Rule {
public:
Rule();
virtual ~Rule();
// Returns true if |url| matches the rule.
virtual bool Matches(const GURL& url) const = 0;
// Returns a string representation of this rule. This is used both for
// visualizing the rules, and also to test equality of a rules list.
virtual std::string ToString() const = 0;
// Creates a copy of this rule. (Caller is responsible for deleting it)
virtual Rule* Clone() const = 0;
bool Equals(const Rule& rule) const;
private:
DISALLOW_COPY_AND_ASSIGN(Rule);
};
typedef std::vector<const Rule*> RuleList;
// Note: This class supports copy constructor and assignment.
ProxyBypassRules();
ProxyBypassRules(const ProxyBypassRules& rhs);
~ProxyBypassRules();
ProxyBypassRules& operator=(const ProxyBypassRules& rhs);
// Returns the current list of rules. The rules list contains pointers
// which are owned by this class, callers should NOT keep references
// or delete them.
const RuleList& rules() const { return rules_; }
// Returns true if |url| matches any of the proxy bypass rules.
bool Matches(const GURL& url) const;
// Returns true if |*this| is equal to |other|; in other words, whether they
// describe the same set of rules.
bool Equals(const ProxyBypassRules& other) const;
// Initializes the list of rules by parsing the string |raw|. |raw| is a
// comma separated list of rules. See AddRuleFromString() to see the list
// of supported formats.
void ParseFromString(const std::string& raw);
// This is a variant of ParseFromString, which interprets hostname patterns
// as suffix tests rather than hostname tests (so "google.com" would actually
// match "*google.com"). This is only currently used for the linux no_proxy
// evironment variable. It is less flexible, since with the suffix matching
// format you can't match an individual host.
// NOTE: Use ParseFromString() unless you truly need this behavior.
void ParseFromStringUsingSuffixMatching(const std::string& raw);
// Adds a rule that matches a URL when all of the following are true:
// (a) The URL's scheme matches |optional_scheme|, if
// |!optional_scheme.empty()|
// (b) The URL's hostname matches |hostname_pattern|.
// (c) The URL's (effective) port number matches |optional_port| if
// |optional_port != -1|
// Returns true if the rule was successfully added.
bool AddRuleForHostname(const std::string& optional_scheme,
const std::string& hostname_pattern,
int optional_port);
// Adds a rule that bypasses all "local" hostnames.
// This matches IE's interpretation of the
// "Bypass proxy server for local addresses" settings checkbox. Fully
// qualified domain names or IP addresses are considered non-local,
// regardless of what they map to (except for the loopback addresses).
void AddRuleToBypassLocal();
// Adds a rule given by the string |raw|. The format of |raw| can be any of
// the following:
//
// (1) [ URL_SCHEME "://" ] HOSTNAME_PATTERN [ ":" <port> ]
//
// Match all hostnames that match the pattern HOSTNAME_PATTERN.
//
// Examples:
// "foobar.com", "*foobar.com", "*.foobar.com", "*foobar.com:99",
// "https://x.*.y.com:99"
//
// (2) "." HOSTNAME_SUFFIX_PATTERN [ ":" PORT ]
//
// Match a particular domain suffix.
//
// Examples:
// ".google.com", ".com", "http://.google.com"
//
// (3) [ SCHEME "://" ] IP_LITERAL [ ":" PORT ]
//
// Match URLs which are IP address literals.
//
// Conceptually this is the similar to (1), but with special cases
// to handle IP literal canonicalization. For example matching
// on "[0:0:0::1]" would be the same as matching on "[::1]" since
// the IPv6 canonicalization is done internally.
//
// Examples:
// "127.0.1", "[0:0::1]", "[::1]", "http://[::1]:99"
//
// (4) IP_LITERAL "/" PREFIX_LENGHT_IN_BITS
//
// Match any URL that is to an IP literal that falls between the
// given range. IP range is specified using CIDR notation.
//
// Examples:
// "192.168.1.1/16", "fefe:13::abc/33".
//
// (5) "<local>"
//
// Match local addresses. The meaning of "<local>" is whether the
// host matches one of: "127.0.0.1", "::1", "localhost".
//
// See the unit-tests for more examples.
//
// Returns true if the rule was successfully added.
//
// TODO(eroman): support IPv6 literals without brackets.
//
bool AddRuleFromString(const std::string& raw);
// This is a variant of AddFromString, which interprets hostname patterns as
// suffix tests rather than hostname tests (so "google.com" would actually
// match "*google.com"). This is used for KDE which interprets every rule as
// a suffix test. It is less flexible, since with the suffix matching format
// you can't match an individual host.
//
// Returns true if the rule was successfully added.
//
// NOTE: Use AddRuleFromString() unless you truly need this behavior.
bool AddRuleFromStringUsingSuffixMatching(const std::string& raw);
// Converts the rules to string representation. Inverse operation to
// ParseFromString().
std::string ToString() const;
// Removes all the rules.
void Clear();
// Sets |*this| to |other|.
void AssignFrom(const ProxyBypassRules& other);
private:
// The following are variants of ParseFromString() and AddRuleFromString(),
// which additionally prefix hostname patterns with a wildcard if
// |use_hostname_suffix_matching| was true.
void ParseFromStringInternal(const std::string& raw,
bool use_hostname_suffix_matching);
bool AddRuleFromStringInternal(const std::string& raw,
bool use_hostname_suffix_matching);
bool AddRuleFromStringInternalWithLogging(const std::string& raw,
bool use_hostname_suffix_matching);
RuleList rules_;
};
} // namespace net
#endif // NET_PROXY_PROXY_BYPASS_RULES_H_