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[Net] Fix masking of irrelevant bits in address groups #1638

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merged 2 commits into from
May 21, 2020
Merged

[Net] Fix masking of irrelevant bits in address groups #1638

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f0e0aca
Fix masking of irrelevant bits in address groups.
morcos Aug 14, 2015
5d7887e
add unit test for CNetAddr::GetGroup.
morcos Aug 19, 2015
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2 changes: 1 addition & 1 deletion src/netbase.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1005,7 +1005,7 @@ std::vector<unsigned char> CNetAddr::GetGroup() const
nBits -= 8;
}
if (nBits > 0)
vchRet.push_back(GetByte(15 - nStartByte) | ((1 << nBits) - 1));
vchRet.push_back(GetByte(15 - nStartByte) | ((1 << (8 - nBits)) - 1));

return vchRet;
}
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17 changes: 17 additions & 0 deletions src/test/netbase_tests.cpp
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Expand Up @@ -9,6 +9,7 @@

#include <string>

#include <boost/assign/list_of.hpp>
#include <boost/test/unit_test.hpp>


Expand Down Expand Up @@ -260,4 +261,20 @@ BOOST_AUTO_TEST_CASE(validate_test)
BOOST_CHECK_MESSAGE(!validateMasternodeIP(ipStr), ipStr);
}

BOOST_AUTO_TEST_CASE(netbase_getgroup)
{
BOOST_CHECK(CNetAddr("127.0.0.1").GetGroup() == boost::assign::list_of(0)); // Local -> !Routable()
BOOST_CHECK(CNetAddr("257.0.0.1").GetGroup() == boost::assign::list_of(0)); // !Valid -> !Routable()
BOOST_CHECK(CNetAddr("10.0.0.1").GetGroup() == boost::assign::list_of(0)); // RFC1918 -> !Routable()
BOOST_CHECK(CNetAddr("169.254.1.1").GetGroup() == boost::assign::list_of(0)); // RFC3927 -> !Routable()
BOOST_CHECK(CNetAddr("1.2.3.4").GetGroup() == boost::assign::list_of((unsigned char)NET_IPV4)(1)(2)); // IPv4
BOOST_CHECK(CNetAddr("::FFFF:0:102:304").GetGroup() == boost::assign::list_of((unsigned char)NET_IPV4)(1)(2)); // RFC6145
BOOST_CHECK(CNetAddr("64:FF9B::102:304").GetGroup() == boost::assign::list_of((unsigned char)NET_IPV4)(1)(2)); // RFC6052
BOOST_CHECK(CNetAddr("2002:102:304:9999:9999:9999:9999:9999").GetGroup() == boost::assign::list_of((unsigned char)NET_IPV4)(1)(2)); // RFC3964
BOOST_CHECK(CNetAddr("2001:0:9999:9999:9999:9999:FEFD:FCFB").GetGroup() == boost::assign::list_of((unsigned char)NET_IPV4)(1)(2)); // RFC4380
BOOST_CHECK(CNetAddr("FD87:D87E:EB43:edb1:8e4:3588:e546:35ca").GetGroup() == boost::assign::list_of((unsigned char)NET_TOR)(239)); // Tor
BOOST_CHECK(CNetAddr("2001:470:abcd:9999:9999:9999:9999:9999").GetGroup() == boost::assign::list_of((unsigned char)NET_IPV6)(32)(1)(4)(112)(175)); //he.net
BOOST_CHECK(CNetAddr("2001:2001:9999:9999:9999:9999:9999:9999").GetGroup() == boost::assign::list_of((unsigned char)NET_IPV6)(32)(1)(32)(1)); //IPv6
}

BOOST_AUTO_TEST_SUITE_END()