1// Copyright 2008, Google Inc. 2// All rights reserved. 3// 4// Redistribution and use in source and binary forms, with or without 5// modification, are permitted provided that the following conditions are 6// met: 7// 8// * Redistributions of source code must retain the above copyright 9// notice, this list of conditions and the following disclaimer. 10// * Redistributions in binary form must reproduce the above 11// copyright notice, this list of conditions and the following disclaimer 12// in the documentation and/or other materials provided with the 13// distribution. 14// * Neither the name of Google Inc. nor the names of its 15// contributors may be used to endorse or promote products derived from 16// this software without specific prior written permission. 17// 18// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 30#ifndef GOOGLEURL_SRC_URL_CANON_IP_H__ 31#define GOOGLEURL_SRC_URL_CANON_IP_H__ 32 33#include "base/string16.h" 34#include "googleurl/src/url_canon.h" 35#include "googleurl/src/url_common.h" 36#include "googleurl/src/url_parse.h" 37 38namespace url_canon { 39 40// Searches the host name for the portions of the IPv4 address. On success, 41// each component will be placed into |components| and it will return true. 42// It will return false if the host can not be separated as an IPv4 address 43// or if there are any non-7-bit characters or other characters that can not 44// be in an IP address. (This is important so we fail as early as possible for 45// common non-IP hostnames.) 46// 47// Not all components may exist. If there are only 3 components, for example, 48// the last one will have a length of -1 or 0 to indicate it does not exist. 49// 50// Note that many platform's inet_addr will ignore everything after a space 51// in certain curcumstances if the stuff before the space looks like an IP 52// address. IE6 is included in this. We do NOT handle this case. In many cases, 53// the browser's canonicalization will get run before this which converts 54// spaces to %20 (in the case of IE7) or rejects them (in the case of 55// Mozilla), so this code path never gets hit. Our host canonicalization will 56// notice these spaces and escape them, which will make IP address finding 57// fail. This seems like better behavior than stripping after a space. 58GURL_API bool FindIPv4Components(const char* spec, 59 const url_parse::Component& host, 60 url_parse::Component components[4]); 61GURL_API bool FindIPv4Components(const char16* spec, 62 const url_parse::Component& host, 63 url_parse::Component components[4]); 64 65// Converts an IPv4 address to a 32-bit number (network byte order). 66// 67// Possible return values: 68// IPV4 - IPv4 address was successfully parsed. 69// BROKEN - Input was formatted like an IPv4 address, but overflow occurred 70// during parsing. 71// NEUTRAL - Input couldn't possibly be interpreted as an IPv4 address. 72// It might be an IPv6 address, or a hostname. 73// 74// On success, |num_ipv4_components| will be populated with the number of 75// components in the IPv4 address. 76GURL_API CanonHostInfo::Family IPv4AddressToNumber( 77 const char* spec, 78 const url_parse::Component& host, 79 unsigned char address[4], 80 int* num_ipv4_components); 81GURL_API CanonHostInfo::Family IPv4AddressToNumber( 82 const char16* spec, 83 const url_parse::Component& host, 84 unsigned char address[4], 85 int* num_ipv4_components); 86 87// Converts an IPv6 address to a 128-bit number (network byte order), returning 88// true on success. False means that the input was not a valid IPv6 address. 89// 90// NOTE that |host| is expected to be surrounded by square brackets. 91// i.e. "[::1]" rather than "::1". 92GURL_API bool IPv6AddressToNumber(const char* spec, 93 const url_parse::Component& host, 94 unsigned char address[16]); 95GURL_API bool IPv6AddressToNumber(const char16* spec, 96 const url_parse::Component& host, 97 unsigned char address[16]); 98 99} // namespace url_canon 100 101#endif // GOOGLEURL_SRC_URL_CANON_IP_H__ 102