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 38 namespace 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. 58 GURL_API bool FindIPv4Components(const char* spec, 59 const url_parse::Component& host, 60 url_parse::Component components[4]); 61 GURL_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. 76 GURL_API CanonHostInfo::Family IPv4AddressToNumber( 77 const char* spec, 78 const url_parse::Component& host, 79 unsigned char address[4], 80 int* num_ipv4_components); 81 GURL_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". 92 GURL_API bool IPv6AddressToNumber(const char* spec, 93 const url_parse::Component& host, 94 unsigned char address[16]); 95 GURL_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