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83 lines
4.0 KiB
C++
83 lines
4.0 KiB
C++
// Copyright 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef URL_URL_CANON_IP_H_
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#define URL_URL_CANON_IP_H_
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#include "base/strings/string16.h"
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#include "url/third_party/mozilla/url_parse.h"
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#include "url/url_canon.h"
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#include "url/url_export.h"
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namespace url {
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// Writes the given IPv4 address to |output|.
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URL_EXPORT void AppendIPv4Address(const unsigned char address[4],
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CanonOutput* output);
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// Writes the given IPv6 address to |output|.
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URL_EXPORT void AppendIPv6Address(const unsigned char address[16],
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CanonOutput* output);
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// Searches the host name for the portions of the IPv4 address. On success,
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// each component will be placed into |components| and it will return true.
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// It will return false if the host can not be separated as an IPv4 address
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// or if there are any non-7-bit characters or other characters that can not
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// be in an IP address. (This is important so we fail as early as possible for
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// common non-IP hostnames.)
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//
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// Not all components may exist. If there are only 3 components, for example,
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// the last one will have a length of -1 or 0 to indicate it does not exist.
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//
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// Note that many platforms' inet_addr will ignore everything after a space
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// in certain circumstances if the stuff before the space looks like an IP
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// address. IE6 is included in this. We do NOT handle this case. In many cases,
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// the browser's canonicalization will get run before this which converts
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// spaces to %20 (in the case of IE7) or rejects them (in the case of Mozilla),
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// so this code path never gets hit. Our host canonicalization will notice
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// these spaces and escape them, which will make IP address finding fail. This
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// seems like better behavior than stripping after a space.
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URL_EXPORT bool FindIPv4Components(const char* spec,
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const Component& host,
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Component components[4]);
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URL_EXPORT bool FindIPv4Components(const base::char16* spec,
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const Component& host,
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Component components[4]);
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// Converts an IPv4 address to a 32-bit number (network byte order).
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//
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// Possible return values:
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// IPV4 - IPv4 address was successfully parsed.
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// BROKEN - Input was formatted like an IPv4 address, but overflow occurred
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// during parsing.
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// NEUTRAL - Input couldn't possibly be interpreted as an IPv4 address.
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// It might be an IPv6 address, or a hostname.
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//
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// On success, |num_ipv4_components| will be populated with the number of
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// components in the IPv4 address.
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URL_EXPORT CanonHostInfo::Family IPv4AddressToNumber(const char* spec,
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const Component& host,
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unsigned char address[4],
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int* num_ipv4_components);
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URL_EXPORT CanonHostInfo::Family IPv4AddressToNumber(const base::char16* spec,
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const Component& host,
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unsigned char address[4],
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int* num_ipv4_components);
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// Converts an IPv6 address to a 128-bit number (network byte order), returning
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// true on success. False means that the input was not a valid IPv6 address.
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//
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// NOTE that |host| is expected to be surrounded by square brackets.
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// i.e. "[::1]" rather than "::1".
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URL_EXPORT bool IPv6AddressToNumber(const char* spec,
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const Component& host,
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unsigned char address[16]);
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URL_EXPORT bool IPv6AddressToNumber(const base::char16* spec,
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const Component& host,
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unsigned char address[16]);
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} // namespace url
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#endif // URL_URL_CANON_IP_H_
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