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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "net/base/net_util.h" | 5 #include "net/base/net_util.h" |
6 | 6 |
7 #include <errno.h> | 7 #include <errno.h> |
8 #include <string.h> | 8 #include <string.h> |
9 | 9 |
10 #include <algorithm> | 10 #include <algorithm> |
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792 return AF_UNSPEC; | 792 return AF_UNSPEC; |
793 case ADDRESS_FAMILY_IPV4: | 793 case ADDRESS_FAMILY_IPV4: |
794 return AF_INET; | 794 return AF_INET; |
795 case ADDRESS_FAMILY_IPV6: | 795 case ADDRESS_FAMILY_IPV6: |
796 return AF_INET6; | 796 return AF_INET6; |
797 } | 797 } |
798 NOTREACHED(); | 798 NOTREACHED(); |
799 return AF_UNSPEC; | 799 return AF_UNSPEC; |
800 } | 800 } |
801 | 801 |
| 802 bool ParseURLHostnameToNumber(const std::string& hostname, |
| 803 IPAddressNumber* ip_number) { |
| 804 // |hostname| is an already canoncalized hostname, conforming to RFC 3986. |
| 805 // For an IP address, this is defined in Section 3.2.2 of RFC 3986, with |
| 806 // the canonical form for IPv6 addresses defined in Section 4 of RFC 5952. |
| 807 url::Component host_comp(0, hostname.size()); |
| 808 |
| 809 // If it has a bracket, try parsing it as an IPv6 address. |
| 810 if (hostname[0] == '[') { |
| 811 ip_number->resize(16); // 128 bits. |
| 812 return url::IPv6AddressToNumber( |
| 813 hostname.data(), host_comp, &(*ip_number)[0]); |
| 814 } |
| 815 |
| 816 // Otherwise, try IPv4. |
| 817 ip_number->resize(4); // 32 bits. |
| 818 int num_components; |
| 819 url::CanonHostInfo::Family family = url::IPv4AddressToNumber( |
| 820 hostname.data(), host_comp, &(*ip_number)[0], &num_components); |
| 821 return family == url::CanonHostInfo::IPV4; |
| 822 } |
| 823 |
802 bool ParseIPLiteralToNumber(const std::string& ip_literal, | 824 bool ParseIPLiteralToNumber(const std::string& ip_literal, |
803 IPAddressNumber* ip_number) { | 825 IPAddressNumber* ip_number) { |
804 // |ip_literal| could be either a IPv4 or an IPv6 literal. If it contains | 826 // |ip_literal| could be either a IPv4 or an IPv6 literal. If it contains |
805 // a colon however, it must be an IPv6 address. | 827 // a colon however, it must be an IPv6 address. |
806 if (ip_literal.find(':') != std::string::npos) { | 828 if (ip_literal.find(':') != std::string::npos) { |
807 // GURL expects IPv6 hostnames to be surrounded with brackets. | 829 // GURL expects IPv6 hostnames to be surrounded with brackets. |
808 std::string host_brackets = "[" + ip_literal + "]"; | 830 std::string host_brackets = "[" + ip_literal + "]"; |
809 url::Component host_comp(0, host_brackets.size()); | 831 url::Component host_comp(0, host_brackets.size()); |
810 | 832 |
811 // Try parsing the hostname as an IPv6 literal. | 833 // Try parsing the hostname as an IPv6 literal. |
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1010 } | 1032 } |
1011 return a1.size() * CHAR_BIT; | 1033 return a1.size() * CHAR_BIT; |
1012 } | 1034 } |
1013 | 1035 |
1014 unsigned MaskPrefixLength(const IPAddressNumber& mask) { | 1036 unsigned MaskPrefixLength(const IPAddressNumber& mask) { |
1015 IPAddressNumber all_ones(mask.size(), 0xFF); | 1037 IPAddressNumber all_ones(mask.size(), 0xFF); |
1016 return CommonPrefixLength(mask, all_ones); | 1038 return CommonPrefixLength(mask, all_ones); |
1017 } | 1039 } |
1018 | 1040 |
1019 } // namespace net | 1041 } // namespace net |
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