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// Copyright 2011 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef NET_BASE_HOST_MAPPING_RULES_H_
#define NET_BASE_HOST_MAPPING_RULES_H_
#include <vector>
#include "base/strings/string_piece.h"
#include "net/base/net_export.h"
class GURL;
namespace net {
class HostPortPair;
class NET_EXPORT_PRIVATE HostMappingRules {
public:
enum class RewriteResult {
kRewritten,
kNoMatchingRule,
kInvalidRewrite,
};
HostMappingRules();
HostMappingRules(const HostMappingRules& host_mapping_rules);
~HostMappingRules();
HostMappingRules& operator=(const HostMappingRules& host_mapping_rules);
// Modifies `*host_port` based on the current rules. Returns true if
// `*host_port` was modified, false otherwise.
bool RewriteHost(HostPortPair* host_port) const;
// Modifies the host and port of `url` based on current rules. May only be
// called for URLs with a host and a scheme that is standard, and if the
// scheme does not allow ports, only the host will be rewritten.
//
// If `url` is rewritten, returns `kRewritten`. If no matching rule is found,
// returns `kNoMatchingRule` and `url` is not modified. If a matching rule is
// found but it results in an invalid URL, e.g. if the rule maps to
// "~NOTFOUND", returns `kInvalidRewrite` and `url` is not modified.
RewriteResult RewriteUrl(GURL& url) const;
// Adds a rule to this mapper. The format of the rule can be one of:
//
// "MAP" <hostname_pattern> <replacement_host> [":" <replacement_port>]
// "EXCLUDE" <hostname_pattern>
//
// The <replacement_host> can be either a hostname, or an IP address literal.
//
// Returns true if the rule was successfully parsed and added.
bool AddRuleFromString(base::StringPiece rule_string);
// Sets the rules from a comma separated list of rules.
void SetRulesFromString(base::StringPiece rules_string);
private:
struct MapRule;
struct ExclusionRule;
typedef std::vector<MapRule> MapRuleList;
typedef std::vector<ExclusionRule> ExclusionRuleList;
MapRuleList map_rules_;
ExclusionRuleList exclusion_rules_;
};
} // namespace net
#endif // NET_BASE_HOST_MAPPING_RULES_H_
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