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9a83df46e08bce9c8515c3026e3bf1e561b935cd
smartdns/test/cases/test-subnet.cc
Nick Peng 9a83df46e0 dns_server: support TCP keepalive timeout EDNS
2023-11-16 23:54:07 +08:00

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/*************************************************************************
*
* Copyright (C) 2018-2023 Ruilin Peng (Nick) <pymumu@gmail.com>.
*
* smartdns is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* smartdns is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "client.h"
#include "dns.h"
#include "include/utils.h"
#include "server.h"
#include "util.h"
#include "gtest/gtest.h"
#include <fstream>
class SubNet : public ::testing::Test
{
protected:
virtual void SetUp() {}
virtual void TearDown() {}
};
TEST_F(SubNet, pass_subnet)
{
smartdns::MockServer server_upstream;
smartdns::Server server;
server_upstream.Start("udp://0.0.0.0:61053", [&](struct smartdns::ServerRequestContext *request) {
if (request->qtype != DNS_T_A) {
return smartdns::SERVER_REQUEST_SOA;
}
struct dns_opt_ecs ecs;
struct dns_rrs *rrs = NULL;
int rr_count = 0;
int i = 0;
int ret = 0;
int has_ecs = 0;
rr_count = 0;
rrs = dns_get_rrs_start(request->packet, DNS_RRS_OPT, &rr_count);
if (rr_count <= 0) {
return smartdns::SERVER_REQUEST_ERROR;
}
for (i = 0; i < rr_count && rrs; i++, rrs = dns_get_rrs_next(request->packet, rrs)) {
memset(&ecs, 0, sizeof(ecs));
ret = dns_get_OPT_ECS(rrs, &ecs);
if (ret != 0) {
continue;
}
has_ecs = 1;
break;
}
if (has_ecs == 0) {
return smartdns::SERVER_REQUEST_ERROR;
}
if (ecs.family != 1) {
return smartdns::SERVER_REQUEST_ERROR;
}
if (memcmp(ecs.addr, "\x08\x08\x08\x00", 4) != 0) {
return smartdns::SERVER_REQUEST_ERROR;
}
if (ecs.source_prefix != 24) {
return smartdns::SERVER_REQUEST_ERROR;
}
smartdns::MockServer::AddIP(request, request->domain.c_str(), "1.2.3.4");
return smartdns::SERVER_REQUEST_OK;
});
server.Start(R"""(bind [::]:60053
server 127.0.0.1:61053
log-num 0
log-console yes
dualstack-ip-selection no
log-level debug
cache-persist no)""");
smartdns::Client client;
ASSERT_TRUE(client.Query("a.com A +subnet=8.8.8.8/24", 60053));
std::cout << client.GetResult() << std::endl;
ASSERT_EQ(client.GetAnswerNum(), 1);
EXPECT_EQ(client.GetStatus(), "NOERROR");
EXPECT_EQ(client.GetAnswer()[0].GetName(), "a.com");
EXPECT_EQ(client.GetAnswer()[0].GetTTL(), 3);
EXPECT_EQ(client.GetAnswer()[0].GetType(), "A");
EXPECT_EQ(client.GetAnswer()[0].GetData(), "1.2.3.4");
}
TEST_F(SubNet, conf)
{
smartdns::MockServer server_upstream;
smartdns::Server server;
server_upstream.Start("udp://0.0.0.0:61053", [&](struct smartdns::ServerRequestContext *request) {
if (request->qtype != DNS_T_A) {
return smartdns::SERVER_REQUEST_SOA;
}
struct dns_opt_ecs ecs;
struct dns_rrs *rrs = NULL;
int rr_count = 0;
int i = 0;
int ret = 0;
int has_ecs = 0;
rr_count = 0;
rrs = dns_get_rrs_start(request->packet, DNS_RRS_OPT, &rr_count);
if (rr_count <= 0) {
return smartdns::SERVER_REQUEST_ERROR;
}
for (i = 0; i < rr_count && rrs; i++, rrs = dns_get_rrs_next(request->packet, rrs)) {
memset(&ecs, 0, sizeof(ecs));
ret = dns_get_OPT_ECS(rrs, &ecs);
if (ret != 0) {
continue;
}
has_ecs = 1;
break;
}
if (has_ecs == 0) {
return smartdns::SERVER_REQUEST_ERROR;
}
if (ecs.family != DNS_OPT_ECS_FAMILY_IPV4) {
return smartdns::SERVER_REQUEST_ERROR;
}
if (memcmp(ecs.addr, "\x08\x08\x08\x00", 4) != 0) {
return smartdns::SERVER_REQUEST_ERROR;
}
if (ecs.source_prefix != 24) {
return smartdns::SERVER_REQUEST_ERROR;
}
smartdns::MockServer::AddIP(request, request->domain.c_str(), "1.2.3.4");
return smartdns::SERVER_REQUEST_OK;
});
server.Start(R"""(bind [::]:60053
server 127.0.0.1:61053
log-num 0
log-console yes
dualstack-ip-selection no
edns-client-subnet 8.8.8.8/24
log-level debug
cache-persist no)""");
smartdns::Client client;
ASSERT_TRUE(client.Query("a.com A", 60053));
std::cout << client.GetResult() << std::endl;
ASSERT_EQ(client.GetAnswerNum(), 1);
EXPECT_EQ(client.GetStatus(), "NOERROR");
EXPECT_EQ(client.GetAnswer()[0].GetName(), "a.com");
EXPECT_EQ(client.GetAnswer()[0].GetTTL(), 3);
EXPECT_EQ(client.GetAnswer()[0].GetType(), "A");
EXPECT_EQ(client.GetAnswer()[0].GetData(), "1.2.3.4");
}
TEST_F(SubNet, conf_v6)
{
smartdns::MockServer server_upstream;
smartdns::Server server;
server_upstream.Start("udp://0.0.0.0:61053", [&](struct smartdns::ServerRequestContext *request) {
if (request->qtype != DNS_T_AAAA) {
return smartdns::SERVER_REQUEST_SOA;
}
struct dns_opt_ecs ecs;
struct dns_rrs *rrs = NULL;
int rr_count = 0;
int i = 0;
int ret = 0;
int has_ecs = 0;
rr_count = 0;
rrs = dns_get_rrs_start(request->packet, DNS_RRS_OPT, &rr_count);
if (rr_count <= 0) {
return smartdns::SERVER_REQUEST_ERROR;
}
for (i = 0; i < rr_count && rrs; i++, rrs = dns_get_rrs_next(request->packet, rrs)) {
memset(&ecs, 0, sizeof(ecs));
ret = dns_get_OPT_ECS(rrs, &ecs);
if (ret != 0) {
continue;
}
has_ecs = 1;
break;
}
if (has_ecs == 0) {
return smartdns::SERVER_REQUEST_ERROR;
}
if (ecs.family != DNS_OPT_ECS_FAMILY_IPV6) {
return smartdns::SERVER_REQUEST_ERROR;
}
if (memcmp(ecs.addr, "\xff\xff\xff\xff\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00", 16) != 0) {
return smartdns::SERVER_REQUEST_ERROR;
}
if (ecs.source_prefix != 64) {
return smartdns::SERVER_REQUEST_ERROR;
}
smartdns::MockServer::AddIP(request, request->domain.c_str(), "2001:db8::1");
return smartdns::SERVER_REQUEST_OK;
});
server.MockPing(PING_TYPE_ICMP, "2001:db8::1", 60, 70);
server.Start(R"""(bind [::]:60053
server 127.0.0.1:61053
log-num 0
log-console yes
dualstack-ip-selection no
edns-client-subnet ffff:ffff:ffff:ffff:ffff::/64
log-level debug
cache-persist no)""");
smartdns::Client client;
ASSERT_TRUE(client.Query("a.com AAAA", 60053));
std::cout << client.GetResult() << std::endl;
ASSERT_EQ(client.GetAnswerNum(), 1);
EXPECT_EQ(client.GetStatus(), "NOERROR");
EXPECT_EQ(client.GetAnswer()[0].GetName(), "a.com");
EXPECT_EQ(client.GetAnswer()[0].GetTTL(), 3);
EXPECT_EQ(client.GetAnswer()[0].GetType(), "AAAA");
EXPECT_EQ(client.GetAnswer()[0].GetData(), "2001:db8::1");
}
TEST_F(SubNet, v4_server_subnet_txt)
{
smartdns::MockServer server_upstream;
smartdns::Server server;
server_upstream.Start("udp://0.0.0.0:61053", [&](struct smartdns::ServerRequestContext *request) {
if (request->qtype != DNS_T_TXT) {
return smartdns::SERVER_REQUEST_SOA;
}
struct dns_opt_ecs ecs;
struct dns_rrs *rrs = NULL;
int rr_count = 0;
int i = 0;
int ret = 0;
int has_ecs = 0;
rr_count = 0;
rrs = dns_get_rrs_start(request->packet, DNS_RRS_OPT, &rr_count);
if (rr_count <= 0) {
return smartdns::SERVER_REQUEST_ERROR;
}
for (i = 0; i < rr_count && rrs; i++, rrs = dns_get_rrs_next(request->packet, rrs)) {
memset(&ecs, 0, sizeof(ecs));
ret = dns_get_OPT_ECS(rrs, &ecs);
if (ret != 0) {
continue;
}
has_ecs = 1;
break;
}
if (has_ecs == 0) {
return smartdns::SERVER_REQUEST_ERROR;
}
if (ecs.family != DNS_OPT_ECS_FAMILY_IPV4) {
return smartdns::SERVER_REQUEST_ERROR;
}
if (memcmp(ecs.addr, "\x08\x08\x08\x00", 4) != 0) {
return smartdns::SERVER_REQUEST_ERROR;
}
if (ecs.source_prefix != 24) {
return smartdns::SERVER_REQUEST_ERROR;
}
dns_add_TXT(request->response_packet, DNS_RRS_AN, request->domain.c_str(), 6, "hello world");
return smartdns::SERVER_REQUEST_OK;
});
server.Start(R"""(bind [::]:60053
server 127.0.0.1:61053 -subnet 8.8.8.8/24
log-num 0
log-console yes
dualstack-ip-selection no
log-level debug
rr-ttl-min 0
cache-persist no)""");
smartdns::Client client;
ASSERT_TRUE(client.Query("a.com TXT", 60053));
std::cout << client.GetResult() << std::endl;
ASSERT_EQ(client.GetAnswerNum(), 1);
EXPECT_EQ(client.GetStatus(), "NOERROR");
EXPECT_EQ(client.GetAnswer()[0].GetName(), "a.com");
EXPECT_EQ(client.GetAnswer()[0].GetTTL(), 6);
EXPECT_EQ(client.GetAnswer()[0].GetType(), "TXT");
EXPECT_EQ(client.GetAnswer()[0].GetData(), "\"hello world\"");
}
TEST_F(SubNet, v6_default_subnet_txt)
{
smartdns::MockServer server_upstream;
smartdns::Server server;
server_upstream.Start("udp://0.0.0.0:61053", [&](struct smartdns::ServerRequestContext *request) {
if (request->qtype != DNS_T_TXT) {
return smartdns::SERVER_REQUEST_SOA;
}
struct dns_opt_ecs ecs;
struct dns_rrs *rrs = NULL;
int rr_count = 0;
int i = 0;
int ret = 0;
int has_ecs = 0;
rr_count = 0;
rrs = dns_get_rrs_start(request->packet, DNS_RRS_OPT, &rr_count);
if (rr_count <= 0) {
return smartdns::SERVER_REQUEST_ERROR;
}
for (i = 0; i < rr_count && rrs; i++, rrs = dns_get_rrs_next(request->packet, rrs)) {
memset(&ecs, 0, sizeof(ecs));
ret = dns_get_OPT_ECS(rrs, &ecs);
if (ret != 0) {
continue;
}
has_ecs = 1;
break;
}
if (has_ecs == 0) {
return smartdns::SERVER_REQUEST_ERROR;
}
if (ecs.family != DNS_OPT_ECS_FAMILY_IPV6) {
return smartdns::SERVER_REQUEST_ERROR;
}
if (memcmp(ecs.addr, "\xff\xff\xff\xff\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00", 16) != 0) {
return smartdns::SERVER_REQUEST_ERROR;
}
if (ecs.source_prefix != 64) {
return smartdns::SERVER_REQUEST_ERROR;
}
dns_add_TXT(request->response_packet, DNS_RRS_AN, request->domain.c_str(), 6, "hello world");
return smartdns::SERVER_REQUEST_OK;
});
server.Start(R"""(bind [::]:60053
server 127.0.0.1:61053
log-num 0
log-console yes
dualstack-ip-selection no
rr-ttl-min 0
edns-client-subnet ffff:ffff:ffff:ffff:ffff::/64
log-level debug
cache-persist no)""");
smartdns::Client client;
ASSERT_TRUE(client.Query("a.com TXT", 60053));
std::cout << client.GetResult() << std::endl;
ASSERT_EQ(client.GetAnswerNum(), 1);
EXPECT_EQ(client.GetStatus(), "NOERROR");
EXPECT_EQ(client.GetAnswer()[0].GetName(), "a.com");
EXPECT_EQ(client.GetAnswer()[0].GetTTL(), 6);
EXPECT_EQ(client.GetAnswer()[0].GetType(), "TXT");
EXPECT_EQ(client.GetAnswer()[0].GetData(), "\"hello world\"");
}
TEST_F(SubNet, per_server)
{
smartdns::MockServer server_upstream1;
smartdns::MockServer server_upstream2;
smartdns::Server server;
server_upstream1.Start("udp://0.0.0.0:61053", [&](struct smartdns::ServerRequestContext *request) {
if (request->qtype == DNS_T_A) {
struct dns_opt_ecs ecs;
struct dns_rrs *rrs = NULL;
int rr_count = 0;
int i = 0;
int ret = 0;
int has_ecs = 0;
rr_count = 0;
rrs = dns_get_rrs_start(request->packet, DNS_RRS_OPT, &rr_count);
if (rr_count <= 0) {
return smartdns::SERVER_REQUEST_ERROR;
}
for (i = 0; i < rr_count && rrs; i++, rrs = dns_get_rrs_next(request->packet, rrs)) {
memset(&ecs, 0, sizeof(ecs));
ret = dns_get_OPT_ECS(rrs, &ecs);
if (ret != 0) {
continue;
}
has_ecs = 1;
break;
}
if (has_ecs == 1) {
return smartdns::SERVER_REQUEST_ERROR;
}
smartdns::MockServer::AddIP(request, request->domain.c_str(), "1.2.3.4");
return smartdns::SERVER_REQUEST_OK;
}
if (request->qtype == DNS_T_AAAA) {
struct dns_opt_ecs ecs;
struct dns_rrs *rrs = NULL;
int rr_count = 0;
int i = 0;
int ret = 0;
int has_ecs = 0;
rr_count = 0;
rrs = dns_get_rrs_start(request->packet, DNS_RRS_OPT, &rr_count);
if (rr_count <= 0) {
return smartdns::SERVER_REQUEST_ERROR;
}
for (i = 0; i < rr_count && rrs; i++, rrs = dns_get_rrs_next(request->packet, rrs)) {
memset(&ecs, 0, sizeof(ecs));
ret = dns_get_OPT_ECS(rrs, &ecs);
if (ret != 0) {
continue;
}
has_ecs = 1;
break;
}
if (has_ecs == 1) {
return smartdns::SERVER_REQUEST_ERROR;
}
smartdns::MockServer::AddIP(request, request->domain.c_str(), "2001:db8::1");
return smartdns::SERVER_REQUEST_OK;
}
return smartdns::SERVER_REQUEST_SOA;
});
server_upstream2.Start("udp://0.0.0.0:62053", [&](struct smartdns::ServerRequestContext *request) {
if (request->qtype == DNS_T_A) {
struct dns_opt_ecs ecs;
struct dns_rrs *rrs = NULL;
int rr_count = 0;
int i = 0;
int ret = 0;
int has_ecs = 0;
rr_count = 0;
rrs = dns_get_rrs_start(request->packet, DNS_RRS_OPT, &rr_count);
if (rr_count <= 0) {
return smartdns::SERVER_REQUEST_ERROR;
}
for (i = 0; i < rr_count && rrs; i++, rrs = dns_get_rrs_next(request->packet, rrs)) {
memset(&ecs, 0, sizeof(ecs));
ret = dns_get_OPT_ECS(rrs, &ecs);
if (ret != 0) {
continue;
}
has_ecs = 1;
break;
}
if (has_ecs == 0) {
smartdns::MockServer::AddIP(request, request->domain.c_str(), "1.2.3.4");
return smartdns::SERVER_REQUEST_OK;
}
if (ecs.family != DNS_OPT_ECS_FAMILY_IPV4) {
return smartdns::SERVER_REQUEST_ERROR;
}
if (memcmp(ecs.addr, "\x08\x08\x08\x00", 4) != 0) {
return smartdns::SERVER_REQUEST_ERROR;
}
if (ecs.source_prefix != 24) {
return smartdns::SERVER_REQUEST_ERROR;
}
smartdns::MockServer::AddIP(request, request->domain.c_str(), "5.6.7.8");
return smartdns::SERVER_REQUEST_OK;
}
if (request->qtype = DNS_T_AAAA) {
struct dns_opt_ecs ecs;
struct dns_rrs *rrs = NULL;
int rr_count = 0;
int i = 0;
int ret = 0;
int has_ecs = 0;
rr_count = 0;
rrs = dns_get_rrs_start(request->packet, DNS_RRS_OPT, &rr_count);
if (rr_count <= 0) {
return smartdns::SERVER_REQUEST_ERROR;
}
for (i = 0; i < rr_count && rrs; i++, rrs = dns_get_rrs_next(request->packet, rrs)) {
memset(&ecs, 0, sizeof(ecs));
ret = dns_get_OPT_ECS(rrs, &ecs);
if (ret != 0) {
continue;
}
has_ecs = 1;
break;
}
if (has_ecs == 0) {
smartdns::MockServer::AddIP(request, request->domain.c_str(), "2001:db8::1");
return smartdns::SERVER_REQUEST_ERROR;
}
if (ecs.family != DNS_OPT_ECS_FAMILY_IPV6) {
return smartdns::SERVER_REQUEST_ERROR;
}
if (memcmp(ecs.addr, "\xff\xff\xff\xff\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00", 16) != 0) {
return smartdns::SERVER_REQUEST_ERROR;
}
if (ecs.source_prefix != 64) {
return smartdns::SERVER_REQUEST_ERROR;
}
smartdns::MockServer::AddIP(request, request->domain.c_str(), "2001:db8::2");
return smartdns::SERVER_REQUEST_OK;
}
return smartdns::SERVER_REQUEST_SOA;
});
server.MockPing(PING_TYPE_ICMP, "1.2.3.4", 60, 100);
server.MockPing(PING_TYPE_ICMP, "5.6.7.8", 60, 10);
server.MockPing(PING_TYPE_ICMP, "2001:db8::1", 60, 100);
server.MockPing(PING_TYPE_ICMP, "2001:db8::2", 60, 10);
server.Start(R"""(bind [::]:60053
server 127.0.0.1:62053 -subnet=8.8.8.8/24 -subnet=ffff:ffff:ffff:ffff:ffff::/64
server 127.0.0.1:61053
log-num 0
log-console yes
dualstack-ip-selection no
log-level debug
cache-persist no)""");
smartdns::Client client;
ASSERT_TRUE(client.Query("a.com A", 60053));
std::cout << client.GetResult() << std::endl;
ASSERT_EQ(client.GetAnswerNum(), 1);
EXPECT_EQ(client.GetStatus(), "NOERROR");
EXPECT_EQ(client.GetAnswer()[0].GetName(), "a.com");
EXPECT_EQ(client.GetAnswer()[0].GetTTL(), 3);
EXPECT_EQ(client.GetAnswer()[0].GetType(), "A");
EXPECT_EQ(client.GetAnswer()[0].GetData(), "5.6.7.8");
ASSERT_TRUE(client.Query("a.com AAAA", 60053));
std::cout << client.GetResult() << std::endl;
ASSERT_EQ(client.GetAnswerNum(), 1);
EXPECT_EQ(client.GetStatus(), "NOERROR");
EXPECT_EQ(client.GetAnswer()[0].GetName(), "a.com");
EXPECT_EQ(client.GetAnswer()[0].GetTTL(), 3);
EXPECT_EQ(client.GetAnswer()[0].GetType(), "AAAA");
EXPECT_EQ(client.GetAnswer()[0].GetData(), "2001:db8::2");
}
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