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Diffstat (limited to 'chromium/net/base/ip_pattern.h')
-rw-r--r-- | chromium/net/base/ip_pattern.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/chromium/net/base/ip_pattern.h b/chromium/net/base/ip_pattern.h new file mode 100644 index 00000000000..bf1d45583d3 --- /dev/null +++ b/chromium/net/base/ip_pattern.h @@ -0,0 +1,70 @@ +// 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. + +#ifndef NET_BASE_IP_PATTERN_H_ +#define NET_BASE_IP_PATTERN_H_ + +#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 { + public: + IPPattern(); + ~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_; } + + private: + 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_; + + DISALLOW_COPY_AND_ASSIGN(IPPattern); +}; + +} // namespace net + +#endif // NET_BASE_IP_PATTERN_H_ |