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// Copyright (c) 2012-2016 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include "addrman.h"
#include "test/test_bitcoin.h"
#include <string>
#include <boost/test/unit_test.hpp>
#include "hash.h"
#include "netbase.h"
#include "random.h"
class CAddrManTest : public CAddrMan
{
uint64_t state;
public:
CAddrManTest()
{
state = 1;
}
//! Ensure that bucket placement is always the same for testing purposes.
void MakeDeterministic()
{
nKey.SetNull();
insecure_rand = FastRandomContext(true);
}
int RandomInt(int nMax)
{
state = (CHashWriter(SER_GETHASH, 0) << state).GetHash().GetCheapHash();
return (unsigned int)(state % nMax);
}
CAddrInfo* Find(const CNetAddr& addr, int* pnId = NULL)
{
return CAddrMan::Find(addr, pnId);
}
CAddrInfo* Create(const CAddress& addr, const CNetAddr& addrSource, int* pnId = NULL)
{
return CAddrMan::Create(addr, addrSource, pnId);
}
void Delete(int nId)
{
CAddrMan::Delete(nId);
}
};
static CNetAddr ResolveIP(const char* ip)
{
CNetAddr addr;
BOOST_CHECK_MESSAGE(LookupHost(ip, addr, false), strprintf("failed to resolve: %s", ip));
return addr;
}
static CNetAddr ResolveIP(std::string ip)
{
return ResolveIP(ip.c_str());
}
static CService ResolveService(const char* ip, int port = 0)
{
CService serv;
BOOST_CHECK_MESSAGE(Lookup(ip, serv, port, false), strprintf("failed to resolve: %s:%i", ip, port));
return serv;
}
static CService ResolveService(std::string ip, int port = 0)
{
return ResolveService(ip.c_str(), port);
}
BOOST_FIXTURE_TEST_SUITE(addrman_tests, BasicTestingSetup)
BOOST_AUTO_TEST_CASE(addrman_simple)
{
CAddrManTest addrman;
// Set addrman addr placement to be deterministic.
addrman.MakeDeterministic();
CNetAddr source = ResolveIP("252.2.2.2");
// Test 1: Does Addrman respond correctly when empty.
BOOST_CHECK(addrman.size() == 0);
CAddrInfo addr_null = addrman.Select();
BOOST_CHECK(addr_null.ToString() == "[::]:0");
// Test 2: Does Addrman::Add work as expected.
CService addr1 = ResolveService("250.1.1.1", 8333);
addrman.Add(CAddress(addr1, NODE_NONE), source);
BOOST_CHECK(addrman.size() == 1);
CAddrInfo addr_ret1 = addrman.Select();
BOOST_CHECK(addr_ret1.ToString() == "250.1.1.1:8333");
// Test 3: Does IP address deduplication work correctly.
// Expected dup IP should not be added.
CService addr1_dup = ResolveService("250.1.1.1", 8333);
addrman.Add(CAddress(addr1_dup, NODE_NONE), source);
BOOST_CHECK(addrman.size() == 1);
// Test 5: New table has one addr and we add a diff addr we should
// have two addrs.
CService addr2 = ResolveService("250.1.1.2", 8333);
addrman.Add(CAddress(addr2, NODE_NONE), source);
BOOST_CHECK(addrman.size() == 2);
// Test 6: AddrMan::Clear() should empty the new table.
addrman.Clear();
BOOST_CHECK(addrman.size() == 0);
CAddrInfo addr_null2 = addrman.Select();
BOOST_CHECK(addr_null2.ToString() == "[::]:0");
}
BOOST_AUTO_TEST_CASE(addrman_ports)
{
CAddrManTest addrman;
// Set addrman addr placement to be deterministic.
addrman.MakeDeterministic();
CNetAddr source = ResolveIP("252.2.2.2");
BOOST_CHECK(addrman.size() == 0);
// Test 7; Addr with same IP but diff port does not replace existing addr.
CService addr1 = ResolveService("250.1.1.1", 8333);
addrman.Add(CAddress(addr1, NODE_NONE), source);
BOOST_CHECK(addrman.size() == 1);
CService addr1_port = ResolveService("250.1.1.1", 8334);
addrman.Add(CAddress(addr1_port, NODE_NONE), source);
BOOST_CHECK(addrman.size() == 1);
CAddrInfo addr_ret2 = addrman.Select();
BOOST_CHECK(addr_ret2.ToString() == "250.1.1.1:8333");
// Test 8: Add same IP but diff port to tried table, it doesn't get added.
// Perhaps this is not ideal behavior but it is the current behavior.
addrman.Good(CAddress(addr1_port, NODE_NONE));
BOOST_CHECK(addrman.size() == 1);
bool newOnly = true;
CAddrInfo addr_ret3 = addrman.Select(newOnly);
BOOST_CHECK(addr_ret3.ToString() == "250.1.1.1:8333");
}
BOOST_AUTO_TEST_CASE(addrman_select)
{
CAddrManTest addrman;
// Set addrman addr placement to be deterministic.
addrman.MakeDeterministic();
CNetAddr source = ResolveIP("252.2.2.2");
// Test 9: Select from new with 1 addr in new.
CService addr1 = ResolveService("250.1.1.1", 8333);
addrman.Add(CAddress(addr1, NODE_NONE), source);
BOOST_CHECK(addrman.size() == 1);
bool newOnly = true;
CAddrInfo addr_ret1 = addrman.Select(newOnly);
BOOST_CHECK(addr_ret1.ToString() == "250.1.1.1:8333");
// Test 10: move addr to tried, select from new expected nothing returned.
addrman.Good(CAddress(addr1, NODE_NONE));
BOOST_CHECK(addrman.size() == 1);
CAddrInfo addr_ret2 = addrman.Select(newOnly);
BOOST_CHECK(addr_ret2.ToString() == "[::]:0");
CAddrInfo addr_ret3 = addrman.Select();
BOOST_CHECK(addr_ret3.ToString() == "250.1.1.1:8333");
BOOST_CHECK(addrman.size() == 1);
// Add three addresses to new table.
CService addr2 = ResolveService("250.3.1.1", 8333);
CService addr3 = ResolveService("250.3.2.2", 9999);
CService addr4 = ResolveService("250.3.3.3", 9999);
addrman.Add(CAddress(addr2, NODE_NONE), ResolveService("250.3.1.1", 8333));
addrman.Add(CAddress(addr3, NODE_NONE), ResolveService("250.3.1.1", 8333));
addrman.Add(CAddress(addr4, NODE_NONE), ResolveService("250.4.1.1", 8333));
// Add three addresses to tried table.
CService addr5 = ResolveService("250.4.4.4", 8333);
CService addr6 = ResolveService("250.4.5.5", 7777);
CService addr7 = ResolveService("250.4.6.6", 8333);
addrman.Add(CAddress(addr5, NODE_NONE), ResolveService("250.3.1.1", 8333));
addrman.Good(CAddress(addr5, NODE_NONE));
addrman.Add(CAddress(addr6, NODE_NONE), ResolveService("250.3.1.1", 8333));
addrman.Good(CAddress(addr6, NODE_NONE));
addrman.Add(CAddress(addr7, NODE_NONE), ResolveService("250.1.1.3", 8333));
addrman.Good(CAddress(addr7, NODE_NONE));
// Test 11: 6 addrs + 1 addr from last test = 7.
BOOST_CHECK(addrman.size() == 7);
// Test 12: Select pulls from new and tried regardless of port number.
std::set<uint16_t> ports;
for (int i = 0; i < 20; ++i) {
ports.insert(addrman.Select().GetPort());
}
BOOST_CHECK_EQUAL(ports.size(), 3);
}
BOOST_AUTO_TEST_CASE(addrman_new_collisions)
{
CAddrManTest addrman;
// Set addrman addr placement to be deterministic.
addrman.MakeDeterministic();
CNetAddr source = ResolveIP("252.2.2.2");
BOOST_CHECK(addrman.size() == 0);
for (unsigned int i = 1; i < 18; i++) {
CService addr = ResolveService("250.1.1." + boost::to_string(i));
addrman.Add(CAddress(addr, NODE_NONE), source);
//Test 13: No collision in new table yet.
BOOST_CHECK(addrman.size() == i);
}
//Test 14: new table collision!
CService addr1 = ResolveService("250.1.1.18");
addrman.Add(CAddress(addr1, NODE_NONE), source);
BOOST_CHECK(addrman.size() == 17);
CService addr2 = ResolveService("250.1.1.19");
addrman.Add(CAddress(addr2, NODE_NONE), source);
BOOST_CHECK(addrman.size() == 18);
}
BOOST_AUTO_TEST_CASE(addrman_tried_collisions)
{
CAddrManTest addrman;
// Set addrman addr placement to be deterministic.
addrman.MakeDeterministic();
CNetAddr source = ResolveIP("252.2.2.2");
BOOST_CHECK(addrman.size() == 0);
for (unsigned int i = 1; i < 80; i++) {
CService addr = ResolveService("250.1.1." + boost::to_string(i));
addrman.Add(CAddress(addr, NODE_NONE), source);
addrman.Good(CAddress(addr, NODE_NONE));
//Test 15: No collision in tried table yet.
BOOST_CHECK_EQUAL(addrman.size(), i);
}
//Test 16: tried table collision!
CService addr1 = ResolveService("250.1.1.80");
addrman.Add(CAddress(addr1, NODE_NONE), source);
BOOST_CHECK(addrman.size() == 79);
CService addr2 = ResolveService("250.1.1.81");
addrman.Add(CAddress(addr2, NODE_NONE), source);
BOOST_CHECK(addrman.size() == 80);
}
BOOST_AUTO_TEST_CASE(addrman_find)
{
CAddrManTest addrman;
// Set addrman addr placement to be deterministic.
addrman.MakeDeterministic();
BOOST_CHECK(addrman.size() == 0);
CAddress addr1 = CAddress(ResolveService("250.1.2.1", 8333), NODE_NONE);
CAddress addr2 = CAddress(ResolveService("250.1.2.1", 9999), NODE_NONE);
CAddress addr3 = CAddress(ResolveService("251.255.2.1", 8333), NODE_NONE);
CNetAddr source1 = ResolveIP("250.1.2.1");
CNetAddr source2 = ResolveIP("250.1.2.2");
addrman.Add(addr1, source1);
addrman.Add(addr2, source2);
addrman.Add(addr3, source1);
// Test 17: ensure Find returns an IP matching what we searched on.
CAddrInfo* info1 = addrman.Find(addr1);
BOOST_CHECK(info1);
if (info1)
BOOST_CHECK(info1->ToString() == "250.1.2.1:8333");
// Test 18; Find does not discriminate by port number.
CAddrInfo* info2 = addrman.Find(addr2);
BOOST_CHECK(info2);
if (info2 && info1)
BOOST_CHECK(info2->ToString() == info1->ToString());
// Test 19: Find returns another IP matching what we searched on.
CAddrInfo* info3 = addrman.Find(addr3);
BOOST_CHECK(info3);
if (info3)
BOOST_CHECK(info3->ToString() == "251.255.2.1:8333");
}
BOOST_AUTO_TEST_CASE(addrman_create)
{
CAddrManTest addrman;
// Set addrman addr placement to be deterministic.
addrman.MakeDeterministic();
BOOST_CHECK(addrman.size() == 0);
CAddress addr1 = CAddress(ResolveService("250.1.2.1", 8333), NODE_NONE);
CNetAddr source1 = ResolveIP("250.1.2.1");
int nId;
CAddrInfo* pinfo = addrman.Create(addr1, source1, &nId);
// Test 20: The result should be the same as the input addr.
BOOST_CHECK(pinfo->ToString() == "250.1.2.1:8333");
CAddrInfo* info2 = addrman.Find(addr1);
BOOST_CHECK(info2->ToString() == "250.1.2.1:8333");
}
BOOST_AUTO_TEST_CASE(addrman_delete)
{
CAddrManTest addrman;
// Set addrman addr placement to be deterministic.
addrman.MakeDeterministic();
BOOST_CHECK(addrman.size() == 0);
CAddress addr1 = CAddress(ResolveService("250.1.2.1", 8333), NODE_NONE);
CNetAddr source1 = ResolveIP("250.1.2.1");
int nId;
addrman.Create(addr1, source1, &nId);
// Test 21: Delete should actually delete the addr.
BOOST_CHECK(addrman.size() == 1);
addrman.Delete(nId);
BOOST_CHECK(addrman.size() == 0);
CAddrInfo* info2 = addrman.Find(addr1);
BOOST_CHECK(info2 == NULL);
}
BOOST_AUTO_TEST_CASE(addrman_getaddr)
{
CAddrManTest addrman;
// Set addrman addr placement to be deterministic.
addrman.MakeDeterministic();
// Test 22: Sanity check, GetAddr should never return anything if addrman
// is empty.
BOOST_CHECK(addrman.size() == 0);
std::vector<CAddress> vAddr1 = addrman.GetAddr();
BOOST_CHECK(vAddr1.size() == 0);
CAddress addr1 = CAddress(ResolveService("250.250.2.1", 8333), NODE_NONE);
addr1.nTime = GetAdjustedTime(); // Set time so isTerrible = false
CAddress addr2 = CAddress(ResolveService("250.251.2.2", 9999), NODE_NONE);
addr2.nTime = GetAdjustedTime();
CAddress addr3 = CAddress(ResolveService("251.252.2.3", 8333), NODE_NONE);
addr3.nTime = GetAdjustedTime();
CAddress addr4 = CAddress(ResolveService("252.253.3.4", 8333), NODE_NONE);
addr4.nTime = GetAdjustedTime();
CAddress addr5 = CAddress(ResolveService("252.254.4.5", 8333), NODE_NONE);
addr5.nTime = GetAdjustedTime();
CNetAddr source1 = ResolveIP("250.1.2.1");
CNetAddr source2 = ResolveIP("250.2.3.3");
// Test 23: Ensure GetAddr works with new addresses.
addrman.Add(addr1, source1);
addrman.Add(addr2, source2);
addrman.Add(addr3, source1);
addrman.Add(addr4, source2);
addrman.Add(addr5, source1);
// GetAddr returns 23% of addresses, 23% of 5 is 1 rounded down.
BOOST_CHECK(addrman.GetAddr().size() == 1);
// Test 24: Ensure GetAddr works with new and tried addresses.
addrman.Good(CAddress(addr1, NODE_NONE));
addrman.Good(CAddress(addr2, NODE_NONE));
BOOST_CHECK(addrman.GetAddr().size() == 1);
// Test 25: Ensure GetAddr still returns 23% when addrman has many addrs.
for (unsigned int i = 1; i < (8 * 256); i++) {
int octet1 = i % 256;
int octet2 = (i / 256) % 256;
int octet3 = (i / (256 * 2)) % 256;
std::string strAddr = boost::to_string(octet1) + "." + boost::to_string(octet2) + "." + boost::to_string(octet3) + ".23";
CAddress addr = CAddress(ResolveService(strAddr), NODE_NONE);
// Ensure that for all addrs in addrman, isTerrible == false.
addr.nTime = GetAdjustedTime();
addrman.Add(addr, ResolveIP(strAddr));
if (i % 8 == 0)
addrman.Good(addr);
}
std::vector<CAddress> vAddr = addrman.GetAddr();
size_t percent23 = (addrman.size() * 23) / 100;
BOOST_CHECK(vAddr.size() == percent23);
BOOST_CHECK(vAddr.size() == 461);
// (Addrman.size() < number of addresses added) due to address collisions.
BOOST_CHECK(addrman.size() == 2007);
}
BOOST_AUTO_TEST_CASE(caddrinfo_get_tried_bucket)
{
CAddrManTest addrman;
// Set addrman addr placement to be deterministic.
addrman.MakeDeterministic();
CAddress addr1 = CAddress(ResolveService("250.1.1.1", 8333), NODE_NONE);
CAddress addr2 = CAddress(ResolveService("250.1.1.1", 9999), NODE_NONE);
CNetAddr source1 = ResolveIP("250.1.1.1");
CAddrInfo info1 = CAddrInfo(addr1, source1);
uint256 nKey1 = (uint256)(CHashWriter(SER_GETHASH, 0) << 1).GetHash();
uint256 nKey2 = (uint256)(CHashWriter(SER_GETHASH, 0) << 2).GetHash();
BOOST_CHECK(info1.GetTriedBucket(nKey1) == 40);
// Test 26: Make sure key actually randomizes bucket placement. A fail on
// this test could be a security issue.
BOOST_CHECK(info1.GetTriedBucket(nKey1) != info1.GetTriedBucket(nKey2));
// Test 27: Two addresses with same IP but different ports can map to
// different buckets because they have different keys.
CAddrInfo info2 = CAddrInfo(addr2, source1);
BOOST_CHECK(info1.GetKey() != info2.GetKey());
BOOST_CHECK(info1.GetTriedBucket(nKey1) != info2.GetTriedBucket(nKey1));
std::set<int> buckets;
for (int i = 0; i < 255; i++) {
CAddrInfo infoi = CAddrInfo(
CAddress(ResolveService("250.1.1." + boost::to_string(i)), NODE_NONE),
ResolveIP("250.1.1." + boost::to_string(i)));
int bucket = infoi.GetTriedBucket(nKey1);
buckets.insert(bucket);
}
// Test 28: IP addresses in the same group (\16 prefix for IPv4) should
// never get more than 8 buckets
BOOST_CHECK(buckets.size() == 8);
buckets.clear();
for (int j = 0; j < 255; j++) {
CAddrInfo infoj = CAddrInfo(
CAddress(ResolveService("250." + boost::to_string(j) + ".1.1"), NODE_NONE),
ResolveIP("250." + boost::to_string(j) + ".1.1"));
int bucket = infoj.GetTriedBucket(nKey1);
buckets.insert(bucket);
}
// Test 29: IP addresses in the different groups should map to more than
// 8 buckets.
BOOST_CHECK(buckets.size() == 160);
}
BOOST_AUTO_TEST_CASE(caddrinfo_get_new_bucket)
{
CAddrManTest addrman;
// Set addrman addr placement to be deterministic.
addrman.MakeDeterministic();
CAddress addr1 = CAddress(ResolveService("250.1.2.1", 8333), NODE_NONE);
CAddress addr2 = CAddress(ResolveService("250.1.2.1", 9999), NODE_NONE);
CNetAddr source1 = ResolveIP("250.1.2.1");
CAddrInfo info1 = CAddrInfo(addr1, source1);
uint256 nKey1 = (uint256)(CHashWriter(SER_GETHASH, 0) << 1).GetHash();
uint256 nKey2 = (uint256)(CHashWriter(SER_GETHASH, 0) << 2).GetHash();
BOOST_CHECK(info1.GetNewBucket(nKey1) == 786);
// Test 30: Make sure key actually randomizes bucket placement. A fail on
// this test could be a security issue.
BOOST_CHECK(info1.GetNewBucket(nKey1) != info1.GetNewBucket(nKey2));
// Test 31: Ports should not effect bucket placement in the addr
CAddrInfo info2 = CAddrInfo(addr2, source1);
BOOST_CHECK(info1.GetKey() != info2.GetKey());
BOOST_CHECK(info1.GetNewBucket(nKey1) == info2.GetNewBucket(nKey1));
std::set<int> buckets;
for (int i = 0; i < 255; i++) {
CAddrInfo infoi = CAddrInfo(
CAddress(ResolveService("250.1.1." + boost::to_string(i)), NODE_NONE),
ResolveIP("250.1.1." + boost::to_string(i)));
int bucket = infoi.GetNewBucket(nKey1);
buckets.insert(bucket);
}
// Test 32: IP addresses in the same group (\16 prefix for IPv4) should
// always map to the same bucket.
BOOST_CHECK(buckets.size() == 1);
buckets.clear();
for (int j = 0; j < 4 * 255; j++) {
CAddrInfo infoj = CAddrInfo(CAddress(
ResolveService(
boost::to_string(250 + (j / 255)) + "." + boost::to_string(j % 256) + ".1.1"), NODE_NONE),
ResolveIP("251.4.1.1"));
int bucket = infoj.GetNewBucket(nKey1);
buckets.insert(bucket);
}
// Test 33: IP addresses in the same source groups should map to no more
// than 64 buckets.
BOOST_CHECK(buckets.size() <= 64);
buckets.clear();
for (int p = 0; p < 255; p++) {
CAddrInfo infoj = CAddrInfo(
CAddress(ResolveService("250.1.1.1"), NODE_NONE),
ResolveIP("250." + boost::to_string(p) + ".1.1"));
int bucket = infoj.GetNewBucket(nKey1);
buckets.insert(bucket);
}
// Test 34: IP addresses in the different source groups should map to more
// than 64 buckets.
BOOST_CHECK(buckets.size() > 64);
}
BOOST_AUTO_TEST_SUITE_END()