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67a42f929b
This introduces CNetAddr and CService, respectively wrapping an
(IPv6) IP address and an IP+port combination. This functionality used
to be part of CAddress, which also contains network flags and
connection attempt information. These extra fields are however not
always necessary.
These classes, along with logic for creating connections and doing
name lookups, are moved to netbase.{h,cpp}, which does not depend on
headers.h.
Furthermore, CNetAddr is mostly IPv6-ready, though IPv6
functionality is not yet enabled for the application itself.
127 lines
4.0 KiB
C++
127 lines
4.0 KiB
C++
//
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// Unit tests for denial-of-service detection/prevention code
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//
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#include <boost/assign/list_of.hpp> // for 'map_list_of()'
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#include <boost/test/unit_test.hpp>
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#include <boost/foreach.hpp>
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#include "main.h"
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#include "wallet.h"
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#include "net.h"
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#include "util.h"
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#include <stdint.h>
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CService ip(uint32_t i)
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{
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struct in_addr s;
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s.s_addr = i;
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return CService(CNetAddr(s), GetDefaultPort());
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}
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BOOST_AUTO_TEST_SUITE(DoS_tests)
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BOOST_AUTO_TEST_CASE(DoS_banning)
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{
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CNode::ClearBanned();
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CAddress addr1(ip(0xa0b0c001));
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CNode dummyNode1(INVALID_SOCKET, addr1, true);
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dummyNode1.Misbehaving(100); // Should get banned
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BOOST_CHECK(CNode::IsBanned(addr1));
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BOOST_CHECK(!CNode::IsBanned(ip(0xa0b0c001|0x0000ff00))); // Different ip, not banned
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CAddress addr2(ip(0xa0b0c002));
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CNode dummyNode2(INVALID_SOCKET, addr2, true);
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dummyNode2.Misbehaving(50);
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BOOST_CHECK(!CNode::IsBanned(addr2)); // 2 not banned yet...
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BOOST_CHECK(CNode::IsBanned(addr1)); // ... but 1 still should be
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dummyNode2.Misbehaving(50);
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BOOST_CHECK(CNode::IsBanned(addr2));
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}
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BOOST_AUTO_TEST_CASE(DoS_banscore)
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{
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CNode::ClearBanned();
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mapArgs["-banscore"] = "111"; // because 11 is my favorite number
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CAddress addr1(ip(0xa0b0c001));
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CNode dummyNode1(INVALID_SOCKET, addr1, true);
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dummyNode1.Misbehaving(100);
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BOOST_CHECK(!CNode::IsBanned(addr1));
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dummyNode1.Misbehaving(10);
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BOOST_CHECK(!CNode::IsBanned(addr1));
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dummyNode1.Misbehaving(1);
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BOOST_CHECK(CNode::IsBanned(addr1));
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mapArgs["-banscore"] = "100";
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}
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BOOST_AUTO_TEST_CASE(DoS_bantime)
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{
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CNode::ClearBanned();
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int64 nStartTime = GetTime();
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SetMockTime(nStartTime); // Overrides future calls to GetTime()
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CAddress addr(ip(0xa0b0c001));
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CNode dummyNode(INVALID_SOCKET, addr, true);
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dummyNode.Misbehaving(100);
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BOOST_CHECK(CNode::IsBanned(addr));
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SetMockTime(nStartTime+60*60);
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BOOST_CHECK(CNode::IsBanned(addr));
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SetMockTime(nStartTime+60*60*24+1);
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BOOST_CHECK(!CNode::IsBanned(addr));
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}
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static bool CheckNBits(unsigned int nbits1, int64 time1, unsigned int nbits2, int64 time2)\
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{
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if (time1 > time2)
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return CheckNBits(nbits2, time2, nbits1, time1);
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int64 deltaTime = time2-time1;
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CBigNum required;
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required.SetCompact(ComputeMinWork(nbits1, deltaTime));
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CBigNum have;
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have.SetCompact(nbits2);
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return (have <= required);
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}
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BOOST_AUTO_TEST_CASE(DoS_checknbits)
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{
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using namespace boost::assign; // for 'map_list_of()'
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// Timestamps,nBits from the bitcoin blockchain.
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// These are the block-chain checkpoint blocks
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typedef std::map<int64, unsigned int> BlockData;
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BlockData chainData =
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map_list_of(1239852051,486604799)(1262749024,486594666)
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(1279305360,469854461)(1280200847,469830746)(1281678674,469809688)
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(1296207707,453179945)(1302624061,453036989)(1309640330,437004818)
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(1313172719,436789733);
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// Make sure CheckNBits considers every combination of block-chain-lock-in-points
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// "sane":
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BOOST_FOREACH(const BlockData::value_type& i, chainData)
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{
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BOOST_FOREACH(const BlockData::value_type& j, chainData)
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{
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BOOST_CHECK(CheckNBits(i.second, i.first, j.second, j.first));
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}
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}
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// Test a couple of insane combinations:
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BlockData::value_type firstcheck = *(chainData.begin());
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BlockData::value_type lastcheck = *(chainData.rbegin());
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// First checkpoint difficulty at or a while after the last checkpoint time should fail when
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// compared to last checkpoint
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BOOST_CHECK(!CheckNBits(firstcheck.second, lastcheck.first+60*10, lastcheck.second, lastcheck.first));
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BOOST_CHECK(!CheckNBits(firstcheck.second, lastcheck.first+60*60*24*14, lastcheck.second, lastcheck.first));
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// ... but OK if enough time passed for difficulty to adjust downward:
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BOOST_CHECK(CheckNBits(firstcheck.second, lastcheck.first+60*60*24*365*4, lastcheck.second, lastcheck.first));
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}
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BOOST_AUTO_TEST_SUITE_END()
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