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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 | |
824 bool ParseIPLiteralToNumber(const std::string& ip_literal, | 802 bool ParseIPLiteralToNumber(const std::string& ip_literal, |
825 IPAddressNumber* ip_number) { | 803 IPAddressNumber* ip_number) { |
826 // |ip_literal| could be either a IPv4 or an IPv6 literal. If it contains | 804 // |ip_literal| could be either a IPv4 or an IPv6 literal. If it contains |
827 // a colon however, it must be an IPv6 address. | 805 // a colon however, it must be an IPv6 address. |
828 if (ip_literal.find(':') != std::string::npos) { | 806 if (ip_literal.find(':') != std::string::npos) { |
829 // GURL expects IPv6 hostnames to be surrounded with brackets. | 807 // GURL expects IPv6 hostnames to be surrounded with brackets. |
830 std::string host_brackets = "[" + ip_literal + "]"; | 808 std::string host_brackets = "[" + ip_literal + "]"; |
831 url::Component host_comp(0, host_brackets.size()); | 809 url::Component host_comp(0, host_brackets.size()); |
832 | 810 |
833 // Try parsing the hostname as an IPv6 literal. | 811 // Try parsing the hostname as an IPv6 literal. |
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1032 } | 1010 } |
1033 return a1.size() * CHAR_BIT; | 1011 return a1.size() * CHAR_BIT; |
1034 } | 1012 } |
1035 | 1013 |
1036 unsigned MaskPrefixLength(const IPAddressNumber& mask) { | 1014 unsigned MaskPrefixLength(const IPAddressNumber& mask) { |
1037 IPAddressNumber all_ones(mask.size(), 0xFF); | 1015 IPAddressNumber all_ones(mask.size(), 0xFF); |
1038 return CommonPrefixLength(mask, all_ones); | 1016 return CommonPrefixLength(mask, all_ones); |
1039 } | 1017 } |
1040 | 1018 |
1041 } // namespace net | 1019 } // namespace net |
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