mirror of
https://github.com/mfontanini/libtins
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57 lines
2.1 KiB
C++
57 lines
2.1 KiB
C++
/*
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* Copyright (c) 2012, Matias Fontanini
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include "address_range.h"
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#include "ip_address.h"
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#include "ipv6_address.h"
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namespace Tins {
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IPv4Range operator/(const IPv4Address &addr, int mask) {
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if(mask > 32)
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throw std::logic_error("Prefix length cannot exceed 32");
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return IPv4Range::from_mask(
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addr,
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IPv4Address(Endian::host_to_be(0xffffffff << (32 - mask)))
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);
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}
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IPv6Range operator/(const IPv6Address &addr, int mask) {
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if(mask > 128)
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throw std::logic_error("Prefix length cannot exceed 128");
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IPv6Address last_addr;
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IPv6Address::iterator it = last_addr.begin();
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while(mask > 8) {
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*it = 0xff;
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++it;
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mask -= 8;
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}
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*it = 0xff << (8 - mask);
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return IPv6Range::from_mask(addr, last_addr);
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}
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} |