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// Copyright 2014 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 <string>
#include <vector>
#include "base/basictypes.h"
#include "base/strings/string_piece.h"
#include "net/base/net_export.h"
#include "net/base/net_util.h"
namespace net {
// IPPatterns are used to match IP address resolutions for possible augmentation
// by a MappedIPResolver, which uses IPMappingRules.
class NET_EXPORT IPPattern {
// Parse a textual pattern (IP_PATTERN as defined in ip_mapping_rules.h) into
// |this| and return true if the parsing was successful.
bool ParsePattern(const std::string& ip_pattern);
// Test to see if the current pattern in |this| matches the given |address|
// and return true if it matches.
bool Match(const IPAddressNumber& address) const;
bool is_ipv4() const { return is_ipv4_; }
class ComponentPattern;
typedef std::vector<std::string> Strings;
typedef std::vector<ComponentPattern*> ComponentPatternList;
// IPv6 addresses have 8 components, while IPv4 addresses have 4 components.
// ComponentPattern is used to define patterns to match individual components.
bool ParseComponentPattern(const base::StringPiece& text,
ComponentPattern* pattern) const;
// Convert IP component to an int. Assume hex vs decimal for IPV6 vs V4.
bool ValueTextToInt(const base::StringPiece& input, uint32* output) const;
bool is_ipv4_;
// The |ip_mask_| indicates, for each component, if this pattern requires an
// exact match (OCTET in IPv4, or 4 hex digits in IPv6).
// For each true element there is an entry in |component_values_|, and false
// means that an entry from our list of ComponentPattern instances must be
// applied.
std::vector<bool> ip_mask_;
// The vector of fixed values that are requried.
// Other values may be restricted by the component_patterns_;
// The class invariant is:
// ip_mask_.size() == component_patterns_.size()
// + size(our ComponentPattern list)
std::vector<uint32> component_values_;
// If only one component position was specified using a range, then this
// list will only have 1 element (i.e., we only have patterns for each element
// of ip_mask_ that is false.)
// We own these elements, and need to destroy them all when we are destroyed.
ComponentPatternList component_patterns_;
} // namespace net