feature: add per server edns-client-subnet support
This commit is contained in:
Nick Peng
447
test/cases/test-subnet.cc
Normal file
447
test/cases/test-subnet.cc
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@@ -0,0 +1,447 @@
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/*************************************************************************
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*
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* Copyright (C) 2018-2023 Ruilin Peng (Nick) <pymumu@gmail.com>.
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*
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* smartdns is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* smartdns is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "client.h"
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#include "dns.h"
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#include "include/utils.h"
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#include "server.h"
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#include "util.h"
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#include "gtest/gtest.h"
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#include <fstream>
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class SubNet : public ::testing::Test
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{
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protected:
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virtual void SetUp() {}
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virtual void TearDown() {}
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};
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TEST_F(SubNet, pass_subnet)
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{
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smartdns::MockServer server_upstream;
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smartdns::Server server;
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server_upstream.Start("udp://0.0.0.0:61053", [&](struct smartdns::ServerRequestContext *request) {
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if (request->qtype != DNS_T_A) {
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return smartdns::SERVER_REQUEST_SOA;
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}
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struct dns_opt_ecs ecs;
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struct dns_rrs *rrs = NULL;
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int rr_count = 0;
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int i = 0;
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int ret = 0;
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int has_ecs = 0;
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rr_count = 0;
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rrs = dns_get_rrs_start(request->packet, DNS_RRS_OPT, &rr_count);
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if (rr_count <= 0) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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for (i = 0; i < rr_count && rrs; i++, rrs = dns_get_rrs_next(request->packet, rrs)) {
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memset(&ecs, 0, sizeof(ecs));
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ret = dns_get_OPT_ECS(rrs, NULL, NULL, &ecs);
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if (ret != 0) {
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continue;
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}
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has_ecs = 1;
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break;
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}
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if (has_ecs == 0) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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if (ecs.family != 1) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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if (memcmp(ecs.addr, "\x08\x08\x08\x00", 4) != 0) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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if (ecs.source_prefix != 24) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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smartdns::MockServer::AddIP(request, request->domain.c_str(), "1.2.3.4");
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return smartdns::SERVER_REQUEST_OK;
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});
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server.Start(R"""(bind [::]:60053
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server 127.0.0.1:61053
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log-num 0
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log-console yes
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dualstack-ip-selection no
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log-level debug
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cache-persist no)""");
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smartdns::Client client;
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ASSERT_TRUE(client.Query("a.com A +subnet=8.8.8.8/24", 60053));
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std::cout << client.GetResult() << std::endl;
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ASSERT_EQ(client.GetAnswerNum(), 1);
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EXPECT_EQ(client.GetStatus(), "NOERROR");
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EXPECT_EQ(client.GetAnswer()[0].GetName(), "a.com");
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EXPECT_EQ(client.GetAnswer()[0].GetTTL(), 3);
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EXPECT_EQ(client.GetAnswer()[0].GetType(), "A");
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EXPECT_EQ(client.GetAnswer()[0].GetData(), "1.2.3.4");
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}
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TEST_F(SubNet, conf)
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{
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smartdns::MockServer server_upstream;
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smartdns::Server server;
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server_upstream.Start("udp://0.0.0.0:61053", [&](struct smartdns::ServerRequestContext *request) {
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if (request->qtype != DNS_T_A) {
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return smartdns::SERVER_REQUEST_SOA;
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}
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struct dns_opt_ecs ecs;
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struct dns_rrs *rrs = NULL;
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int rr_count = 0;
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int i = 0;
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int ret = 0;
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int has_ecs = 0;
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rr_count = 0;
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rrs = dns_get_rrs_start(request->packet, DNS_RRS_OPT, &rr_count);
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if (rr_count <= 0) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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for (i = 0; i < rr_count && rrs; i++, rrs = dns_get_rrs_next(request->packet, rrs)) {
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memset(&ecs, 0, sizeof(ecs));
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ret = dns_get_OPT_ECS(rrs, NULL, NULL, &ecs);
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if (ret != 0) {
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continue;
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}
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has_ecs = 1;
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break;
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}
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if (has_ecs == 0) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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if (ecs.family != DNS_OPT_ECS_FAMILY_IPV4) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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if (memcmp(ecs.addr, "\x08\x08\x08\x00", 4) != 0) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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if (ecs.source_prefix != 24) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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smartdns::MockServer::AddIP(request, request->domain.c_str(), "1.2.3.4");
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return smartdns::SERVER_REQUEST_OK;
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});
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server.Start(R"""(bind [::]:60053
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server 127.0.0.1:61053
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log-num 0
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log-console yes
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dualstack-ip-selection no
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edns-client-subnet 8.8.8.8/24
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log-level debug
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cache-persist no)""");
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smartdns::Client client;
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ASSERT_TRUE(client.Query("a.com A", 60053));
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std::cout << client.GetResult() << std::endl;
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ASSERT_EQ(client.GetAnswerNum(), 1);
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EXPECT_EQ(client.GetStatus(), "NOERROR");
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EXPECT_EQ(client.GetAnswer()[0].GetName(), "a.com");
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EXPECT_EQ(client.GetAnswer()[0].GetTTL(), 3);
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EXPECT_EQ(client.GetAnswer()[0].GetType(), "A");
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EXPECT_EQ(client.GetAnswer()[0].GetData(), "1.2.3.4");
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}
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TEST_F(SubNet, conf_v6)
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{
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smartdns::MockServer server_upstream;
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smartdns::Server server;
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server_upstream.Start("udp://0.0.0.0:61053", [&](struct smartdns::ServerRequestContext *request) {
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if (request->qtype != DNS_T_AAAA) {
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return smartdns::SERVER_REQUEST_SOA;
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}
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struct dns_opt_ecs ecs;
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struct dns_rrs *rrs = NULL;
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int rr_count = 0;
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int i = 0;
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int ret = 0;
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int has_ecs = 0;
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rr_count = 0;
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rrs = dns_get_rrs_start(request->packet, DNS_RRS_OPT, &rr_count);
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if (rr_count <= 0) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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for (i = 0; i < rr_count && rrs; i++, rrs = dns_get_rrs_next(request->packet, rrs)) {
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memset(&ecs, 0, sizeof(ecs));
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ret = dns_get_OPT_ECS(rrs, NULL, NULL, &ecs);
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if (ret != 0) {
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continue;
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}
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has_ecs = 1;
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break;
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}
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if (has_ecs == 0) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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if (ecs.family != DNS_OPT_ECS_FAMILY_IPV6) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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if (memcmp(ecs.addr, "\xff\xff\xff\xff\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00", 16) != 0) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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if (ecs.source_prefix != 64) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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smartdns::MockServer::AddIP(request, request->domain.c_str(), "2001:db8::1");
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return smartdns::SERVER_REQUEST_OK;
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});
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server.MockPing(PING_TYPE_ICMP, "2001:db8::1", 60, 70);
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server.Start(R"""(bind [::]:60053
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server 127.0.0.1:61053
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log-num 0
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log-console yes
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dualstack-ip-selection no
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edns-client-subnet ffff:ffff:ffff:ffff:ffff::/64
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log-level debug
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cache-persist no)""");
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smartdns::Client client;
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ASSERT_TRUE(client.Query("a.com AAAA", 60053));
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std::cout << client.GetResult() << std::endl;
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ASSERT_EQ(client.GetAnswerNum(), 1);
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EXPECT_EQ(client.GetStatus(), "NOERROR");
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EXPECT_EQ(client.GetAnswer()[0].GetName(), "a.com");
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EXPECT_EQ(client.GetAnswer()[0].GetTTL(), 3);
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EXPECT_EQ(client.GetAnswer()[0].GetType(), "AAAA");
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EXPECT_EQ(client.GetAnswer()[0].GetData(), "2001:db8::1");
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}
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TEST_F(SubNet, per_server)
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{
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smartdns::MockServer server_upstream1;
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smartdns::MockServer server_upstream2;
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smartdns::Server server;
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server_upstream1.Start("udp://0.0.0.0:61053", [&](struct smartdns::ServerRequestContext *request) {
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if (request->qtype == DNS_T_A) {
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struct dns_opt_ecs ecs;
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struct dns_rrs *rrs = NULL;
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int rr_count = 0;
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int i = 0;
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int ret = 0;
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int has_ecs = 0;
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rr_count = 0;
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rrs = dns_get_rrs_start(request->packet, DNS_RRS_OPT, &rr_count);
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if (rr_count <= 0) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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for (i = 0; i < rr_count && rrs; i++, rrs = dns_get_rrs_next(request->packet, rrs)) {
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memset(&ecs, 0, sizeof(ecs));
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ret = dns_get_OPT_ECS(rrs, NULL, NULL, &ecs);
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if (ret != 0) {
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continue;
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}
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has_ecs = 1;
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break;
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}
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if (has_ecs == 1) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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smartdns::MockServer::AddIP(request, request->domain.c_str(), "1.2.3.4");
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return smartdns::SERVER_REQUEST_OK;
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}
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if (request->qtype == DNS_T_AAAA) {
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struct dns_opt_ecs ecs;
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struct dns_rrs *rrs = NULL;
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int rr_count = 0;
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int i = 0;
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int ret = 0;
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int has_ecs = 0;
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rr_count = 0;
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rrs = dns_get_rrs_start(request->packet, DNS_RRS_OPT, &rr_count);
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if (rr_count <= 0) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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for (i = 0; i < rr_count && rrs; i++, rrs = dns_get_rrs_next(request->packet, rrs)) {
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memset(&ecs, 0, sizeof(ecs));
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ret = dns_get_OPT_ECS(rrs, NULL, NULL, &ecs);
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if (ret != 0) {
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continue;
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}
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has_ecs = 1;
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break;
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}
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if (has_ecs == 1) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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smartdns::MockServer::AddIP(request, request->domain.c_str(), "2001:db8::1");
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return smartdns::SERVER_REQUEST_OK;
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}
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return smartdns::SERVER_REQUEST_SOA;
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});
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server_upstream2.Start("udp://0.0.0.0:62053", [&](struct smartdns::ServerRequestContext *request) {
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if (request->qtype == DNS_T_A) {
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struct dns_opt_ecs ecs;
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struct dns_rrs *rrs = NULL;
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int rr_count = 0;
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int i = 0;
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int ret = 0;
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int has_ecs = 0;
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rr_count = 0;
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rrs = dns_get_rrs_start(request->packet, DNS_RRS_OPT, &rr_count);
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if (rr_count <= 0) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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for (i = 0; i < rr_count && rrs; i++, rrs = dns_get_rrs_next(request->packet, rrs)) {
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memset(&ecs, 0, sizeof(ecs));
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ret = dns_get_OPT_ECS(rrs, NULL, NULL, &ecs);
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if (ret != 0) {
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continue;
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}
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has_ecs = 1;
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break;
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}
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if (has_ecs == 0) {
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smartdns::MockServer::AddIP(request, request->domain.c_str(), "1.2.3.4");
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return smartdns::SERVER_REQUEST_OK;
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}
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if (ecs.family != DNS_OPT_ECS_FAMILY_IPV4) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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if (memcmp(ecs.addr, "\x08\x08\x08\x00", 4) != 0) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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if (ecs.source_prefix != 24) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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smartdns::MockServer::AddIP(request, request->domain.c_str(), "5.6.7.8");
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return smartdns::SERVER_REQUEST_OK;
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}
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if (request->qtype = DNS_T_AAAA) {
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struct dns_opt_ecs ecs;
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struct dns_rrs *rrs = NULL;
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int rr_count = 0;
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int i = 0;
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int ret = 0;
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int has_ecs = 0;
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rr_count = 0;
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rrs = dns_get_rrs_start(request->packet, DNS_RRS_OPT, &rr_count);
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if (rr_count <= 0) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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for (i = 0; i < rr_count && rrs; i++, rrs = dns_get_rrs_next(request->packet, rrs)) {
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memset(&ecs, 0, sizeof(ecs));
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ret = dns_get_OPT_ECS(rrs, NULL, NULL, &ecs);
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if (ret != 0) {
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continue;
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}
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has_ecs = 1;
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break;
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}
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if (has_ecs == 0) {
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smartdns::MockServer::AddIP(request, request->domain.c_str(), "2001:db8::1");
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return smartdns::SERVER_REQUEST_ERROR;
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}
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if (ecs.family != DNS_OPT_ECS_FAMILY_IPV6) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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if (memcmp(ecs.addr, "\xff\xff\xff\xff\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00", 16) != 0) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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if (ecs.source_prefix != 64) {
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return smartdns::SERVER_REQUEST_ERROR;
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}
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smartdns::MockServer::AddIP(request, request->domain.c_str(), "2001:db8::2");
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return smartdns::SERVER_REQUEST_OK;
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}
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return smartdns::SERVER_REQUEST_SOA;
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});
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server.MockPing(PING_TYPE_ICMP, "1.2.3.4", 60, 100);
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server.MockPing(PING_TYPE_ICMP, "5.6.7.8", 60, 10);
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server.MockPing(PING_TYPE_ICMP, "2001:db8::1", 60, 100);
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server.MockPing(PING_TYPE_ICMP, "2001:db8::2", 60, 10);
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server.Start(R"""(bind [::]:60053
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server 127.0.0.1:62053 -subnet=8.8.8.8/24 -subnet=ffff:ffff:ffff:ffff:ffff::/64
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server 127.0.0.1:61053
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log-num 0
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log-console yes
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dualstack-ip-selection no
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log-level debug
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cache-persist no)""");
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smartdns::Client client;
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ASSERT_TRUE(client.Query("a.com A", 60053));
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std::cout << client.GetResult() << std::endl;
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ASSERT_EQ(client.GetAnswerNum(), 1);
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EXPECT_EQ(client.GetStatus(), "NOERROR");
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EXPECT_EQ(client.GetAnswer()[0].GetName(), "a.com");
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EXPECT_EQ(client.GetAnswer()[0].GetTTL(), 3);
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EXPECT_EQ(client.GetAnswer()[0].GetType(), "A");
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EXPECT_EQ(client.GetAnswer()[0].GetData(), "5.6.7.8");
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ASSERT_TRUE(client.Query("a.com AAAA", 60053));
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std::cout << client.GetResult() << std::endl;
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ASSERT_EQ(client.GetAnswerNum(), 1);
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EXPECT_EQ(client.GetStatus(), "NOERROR");
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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");
|
||||
}
|
||||
Reference in New Issue
Block a user