From 19fcec84d8d7d21e796c7624e521b60d28ee21ed Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:45:59 +0200 Subject: Adding upstream version 16.2.11+ds. Signed-off-by: Daniel Baumann --- src/c-ares/test/ares-test-parse-srv.cc | 288 +++++++++++++++++++++++++++++++++ 1 file changed, 288 insertions(+) create mode 100644 src/c-ares/test/ares-test-parse-srv.cc (limited to 'src/c-ares/test/ares-test-parse-srv.cc') diff --git a/src/c-ares/test/ares-test-parse-srv.cc b/src/c-ares/test/ares-test-parse-srv.cc new file mode 100644 index 000000000..cc651d6d4 --- /dev/null +++ b/src/c-ares/test/ares-test-parse-srv.cc @@ -0,0 +1,288 @@ +#include "ares-test.h" +#include "dns-proto.h" + +#include +#include + +namespace ares { +namespace test { + +TEST_F(LibraryTest, ParseSrvReplyOK) { + DNSPacket pkt; + pkt.set_qid(0x1234).set_response().set_aa() + .add_question(new DNSQuestion("example.com", ns_t_srv)) + .add_answer(new DNSSrvRR("example.com", 100, 10, 20, 30, "srv.example.com")) + .add_answer(new DNSSrvRR("example.com", 100, 11, 21, 31, "srv2.example.com")); + std::vector data = pkt.data(); + + struct ares_srv_reply* srv = nullptr; + EXPECT_EQ(ARES_SUCCESS, ares_parse_srv_reply(data.data(), data.size(), &srv)); + ASSERT_NE(nullptr, srv); + + EXPECT_EQ("srv.example.com", std::string(srv->host)); + EXPECT_EQ(10, srv->priority); + EXPECT_EQ(20, srv->weight); + EXPECT_EQ(30, srv->port); + + struct ares_srv_reply* srv2 = srv->next; + ASSERT_NE(nullptr, srv2); + EXPECT_EQ("srv2.example.com", std::string(srv2->host)); + EXPECT_EQ(11, srv2->priority); + EXPECT_EQ(21, srv2->weight); + EXPECT_EQ(31, srv2->port); + EXPECT_EQ(nullptr, srv2->next); + + ares_free_data(srv); +} + +TEST_F(LibraryTest, ParseSrvReplySingle) { + DNSPacket pkt; + pkt.set_qid(0x1234).set_response().set_aa() + .add_question(new DNSQuestion("example.abc.def.com", ns_t_srv)) + .add_answer(new DNSSrvRR("example.abc.def.com", 180, 0, 10, 8160, "example.abc.def.com")) + .add_auth(new DNSNsRR("abc.def.com", 44, "else1.where.com")) + .add_auth(new DNSNsRR("abc.def.com", 44, "else2.where.com")) + .add_auth(new DNSNsRR("abc.def.com", 44, "else3.where.com")) + .add_auth(new DNSNsRR("abc.def.com", 44, "else4.where.com")) + .add_auth(new DNSNsRR("abc.def.com", 44, "else5.where.com")) + .add_additional(new DNSARR("else2.where.com", 42, {172,19,0,1})) + .add_additional(new DNSARR("else5.where.com", 42, {172,19,0,2})); + std::vector data = pkt.data(); + + struct ares_srv_reply* srv = nullptr; + EXPECT_EQ(ARES_SUCCESS, ares_parse_srv_reply(data.data(), data.size(), &srv)); + ASSERT_NE(nullptr, srv); + + EXPECT_EQ("example.abc.def.com", std::string(srv->host)); + EXPECT_EQ(0, srv->priority); + EXPECT_EQ(10, srv->weight); + EXPECT_EQ(8160, srv->port); + EXPECT_EQ(nullptr, srv->next); + + ares_free_data(srv); +} + +TEST_F(LibraryTest, ParseSrvReplyMalformed) { + std::vector data = { + 0x12, 0x34, // qid + 0x84, // response + query + AA + not-TC + not-RD + 0x00, // not-RA + not-Z + not-AD + not-CD + rc=NoError + 0x00, 0x01, // num questions + 0x00, 0x01, // num answer RRs + 0x00, 0x00, // num authority RRs + 0x00, 0x00, // num additional RRs + // Question + 0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e', + 0x03, 'c', 'o', 'm', + 0x00, + 0x00, 0x21, // type SRV + 0x00, 0x01, // class IN + // Answer 1 + 0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e', + 0x03, 'c', 'o', 'm', + 0x00, + 0x00, 0x21, // RR type + 0x00, 0x01, // class IN + 0x01, 0x02, 0x03, 0x04, // TTL + 0x00, 0x04, // rdata length -- too short + 0x02, 0x03, 0x04, 0x05, + }; + + struct ares_srv_reply* srv = nullptr; + EXPECT_EQ(ARES_EBADRESP, ares_parse_srv_reply(data.data(), data.size(), &srv)); + ASSERT_EQ(nullptr, srv); +} + +TEST_F(LibraryTest, ParseSrvReplyMultiple) { + DNSPacket pkt; + pkt.set_qid(0x1234).set_response().set_ra().set_rd() + .add_question(new DNSQuestion("srv.example.com", ns_t_srv)) + .add_answer(new DNSSrvRR("srv.example.com", 300, 0, 5, 6789, "a1.srv.example.com")) + .add_answer(new DNSSrvRR("srv.example.com", 300, 0, 5, 4567, "a2.srv.example.com")) + .add_answer(new DNSSrvRR("srv.example.com", 300, 0, 5, 5678, "a3.srv.example.com")) + .add_auth(new DNSNsRR("example.com", 300, "ns1.example.com")) + .add_auth(new DNSNsRR("example.com", 300, "ns2.example.com")) + .add_auth(new DNSNsRR("example.com", 300, "ns3.example.com")) + .add_additional(new DNSARR("a1.srv.example.com", 300, {172,19,1,1})) + .add_additional(new DNSARR("a2.srv.example.com", 300, {172,19,1,2})) + .add_additional(new DNSARR("a3.srv.example.com", 300, {172,19,1,3})) + .add_additional(new DNSARR("n1.example.com", 300, {172,19,0,1})) + .add_additional(new DNSARR("n2.example.com", 300, {172,19,0,2})) + .add_additional(new DNSARR("n3.example.com", 300, {172,19,0,3})); + std::vector data = pkt.data(); + + struct ares_srv_reply* srv0 = nullptr; + EXPECT_EQ(ARES_SUCCESS, ares_parse_srv_reply(data.data(), data.size(), &srv0)); + ASSERT_NE(nullptr, srv0); + struct ares_srv_reply* srv = srv0; + + EXPECT_EQ("a1.srv.example.com", std::string(srv->host)); + EXPECT_EQ(0, srv->priority); + EXPECT_EQ(5, srv->weight); + EXPECT_EQ(6789, srv->port); + EXPECT_NE(nullptr, srv->next); + srv = srv->next; + + EXPECT_EQ("a2.srv.example.com", std::string(srv->host)); + EXPECT_EQ(0, srv->priority); + EXPECT_EQ(5, srv->weight); + EXPECT_EQ(4567, srv->port); + EXPECT_NE(nullptr, srv->next); + srv = srv->next; + + EXPECT_EQ("a3.srv.example.com", std::string(srv->host)); + EXPECT_EQ(0, srv->priority); + EXPECT_EQ(5, srv->weight); + EXPECT_EQ(5678, srv->port); + EXPECT_EQ(nullptr, srv->next); + + ares_free_data(srv0); +} + +TEST_F(LibraryTest, ParseSrvReplyCname) { + DNSPacket pkt; + pkt.set_qid(0x1234).set_response().set_aa() + .add_question(new DNSQuestion("example.abc.def.com", ns_t_srv)) + .add_answer(new DNSCnameRR("example.abc.def.com", 300, "cname.abc.def.com")) + .add_answer(new DNSSrvRR("cname.abc.def.com", 300, 0, 10, 1234, "srv.abc.def.com")) + .add_auth(new DNSNsRR("abc.def.com", 44, "else1.where.com")) + .add_auth(new DNSNsRR("abc.def.com", 44, "else2.where.com")) + .add_auth(new DNSNsRR("abc.def.com", 44, "else3.where.com")) + .add_additional(new DNSARR("example.abc.def.com", 300, {172,19,0,1})) + .add_additional(new DNSARR("else1.where.com", 42, {172,19,0,1})) + .add_additional(new DNSARR("else2.where.com", 42, {172,19,0,2})) + .add_additional(new DNSARR("else3.where.com", 42, {172,19,0,3})); + std::vector data = pkt.data(); + + struct ares_srv_reply* srv = nullptr; + EXPECT_EQ(ARES_SUCCESS, ares_parse_srv_reply(data.data(), data.size(), &srv)); + ASSERT_NE(nullptr, srv); + + EXPECT_EQ("srv.abc.def.com", std::string(srv->host)); + EXPECT_EQ(0, srv->priority); + EXPECT_EQ(10, srv->weight); + EXPECT_EQ(1234, srv->port); + EXPECT_EQ(nullptr, srv->next); + + ares_free_data(srv); +} + +TEST_F(LibraryTest, ParseSrvReplyCnameMultiple) { + DNSPacket pkt; + pkt.set_qid(0x1234).set_response().set_ra().set_rd() + .add_question(new DNSQuestion("query.example.com", ns_t_srv)) + .add_answer(new DNSCnameRR("query.example.com", 300, "srv.example.com")) + .add_answer(new DNSSrvRR("srv.example.com", 300, 0, 5, 6789, "a1.srv.example.com")) + .add_answer(new DNSSrvRR("srv.example.com", 300, 0, 5, 4567, "a2.srv.example.com")) + .add_answer(new DNSSrvRR("srv.example.com", 300, 0, 5, 5678, "a3.srv.example.com")) + .add_auth(new DNSNsRR("example.com", 300, "ns1.example.com")) + .add_auth(new DNSNsRR("example.com", 300, "ns2.example.com")) + .add_auth(new DNSNsRR("example.com", 300, "ns3.example.com")) + .add_additional(new DNSARR("a1.srv.example.com", 300, {172,19,1,1})) + .add_additional(new DNSARR("a2.srv.example.com", 300, {172,19,1,2})) + .add_additional(new DNSARR("a3.srv.example.com", 300, {172,19,1,3})) + .add_additional(new DNSARR("n1.example.com", 300, {172,19,0,1})) + .add_additional(new DNSARR("n2.example.com", 300, {172,19,0,2})) + .add_additional(new DNSARR("n3.example.com", 300, {172,19,0,3})); + std::vector data = pkt.data(); + + struct ares_srv_reply* srv0 = nullptr; + EXPECT_EQ(ARES_SUCCESS, ares_parse_srv_reply(data.data(), data.size(), &srv0)); + ASSERT_NE(nullptr, srv0); + struct ares_srv_reply* srv = srv0; + + EXPECT_EQ("a1.srv.example.com", std::string(srv->host)); + EXPECT_EQ(0, srv->priority); + EXPECT_EQ(5, srv->weight); + EXPECT_EQ(6789, srv->port); + EXPECT_NE(nullptr, srv->next); + srv = srv->next; + + EXPECT_EQ("a2.srv.example.com", std::string(srv->host)); + EXPECT_EQ(0, srv->priority); + EXPECT_EQ(5, srv->weight); + EXPECT_EQ(4567, srv->port); + EXPECT_NE(nullptr, srv->next); + srv = srv->next; + + EXPECT_EQ("a3.srv.example.com", std::string(srv->host)); + EXPECT_EQ(0, srv->priority); + EXPECT_EQ(5, srv->weight); + EXPECT_EQ(5678, srv->port); + EXPECT_EQ(nullptr, srv->next); + + ares_free_data(srv0); +} + +TEST_F(LibraryTest, ParseSrvReplyErrors) { + DNSPacket pkt; + pkt.set_qid(0x1234).set_response().set_aa() + .add_question(new DNSQuestion("example.abc.def.com", ns_t_srv)) + .add_answer(new DNSSrvRR("example.abc.def.com", 180, 0, 10, 8160, "example.abc.def.com")); + std::vector data; + struct ares_srv_reply* srv = nullptr; + + // No question. + pkt.questions_.clear(); + data = pkt.data(); + EXPECT_EQ(ARES_EBADRESP, ares_parse_srv_reply(data.data(), data.size(), &srv)); + pkt.add_question(new DNSQuestion("example.abc.def.com", ns_t_srv)); + +#ifdef DISABLED + // Question != answer + pkt.questions_.clear(); + pkt.add_question(new DNSQuestion("Axample.com", ns_t_srv)); + data = pkt.data(); + EXPECT_EQ(ARES_ENODATA, ares_parse_srv_reply(data.data(), data.size(), &srv)); + pkt.questions_.clear(); + pkt.add_question(new DNSQuestion("example.com", ns_t_srv)); +#endif + + // Two questions. + pkt.add_question(new DNSQuestion("example.abc.def.com", ns_t_srv)); + data = pkt.data(); + EXPECT_EQ(ARES_EBADRESP, ares_parse_srv_reply(data.data(), data.size(), &srv)); + pkt.questions_.clear(); + pkt.add_question(new DNSQuestion("64.48.32.16.in-addr.arpa", ns_t_ptr)); + + // Wrong sort of answer. + pkt.answers_.clear(); + pkt.add_answer(new DNSMxRR("example.com", 100, 100, "mx1.example.com")); + data = pkt.data(); + EXPECT_EQ(ARES_SUCCESS, ares_parse_srv_reply(data.data(), data.size(), &srv)); + EXPECT_EQ(nullptr, srv); + pkt.answers_.clear(); + pkt.add_answer(new DNSSrvRR("example.abc.def.com", 180, 0, 10, 8160, "example.abc.def.com")); + + // No answer. + pkt.answers_.clear(); + data = pkt.data(); + EXPECT_EQ(ARES_ENODATA, ares_parse_srv_reply(data.data(), data.size(), &srv)); + pkt.add_answer(new DNSSrvRR("example.abc.def.com", 180, 0, 10, 8160, "example.abc.def.com")); + + // Truncated packets. + data = pkt.data(); + for (size_t len = 1; len < data.size(); len++) { + int rc = ares_parse_srv_reply(data.data(), len, &srv); + EXPECT_TRUE(rc == ARES_EBADRESP || rc == ARES_EBADNAME); + } +} + +TEST_F(LibraryTest, ParseSrvReplyAllocFail) { + DNSPacket pkt; + pkt.set_qid(0x1234).set_response().set_aa() + .add_question(new DNSQuestion("example.abc.def.com", ns_t_srv)) + .add_answer(new DNSCnameRR("example.com", 300, "c.example.com")) + .add_answer(new DNSSrvRR("example.abc.def.com", 180, 0, 10, 8160, "example.abc.def.com")); + std::vector data = pkt.data(); + struct ares_srv_reply* srv = nullptr; + + for (int ii = 1; ii <= 5; ii++) { + ClearFails(); + SetAllocFail(ii); + EXPECT_EQ(ARES_ENOMEM, ares_parse_srv_reply(data.data(), data.size(), &srv)) << ii; + } +} + +} // namespace test +} // namespace ares -- cgit v1.2.3