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Diffstat (limited to 'test/ares-test-parse-a.cc')
-rw-r--r-- | test/ares-test-parse-a.cc | 362 |
1 files changed, 0 insertions, 362 deletions
diff --git a/test/ares-test-parse-a.cc b/test/ares-test-parse-a.cc deleted file mode 100644 index 77d9591..0000000 --- a/test/ares-test-parse-a.cc +++ /dev/null @@ -1,362 +0,0 @@ -#include "ares-test.h" -#include "dns-proto.h" - -#include <sstream> -#include <vector> - -namespace ares { -namespace test { - -TEST_F(LibraryTest, ParseAReplyOK) { - DNSPacket pkt; - pkt.set_qid(0x1234).set_response().set_aa() - .add_question(new DNSQuestion("example.com", ns_t_a)) - .add_answer(new DNSARR("example.com", 0x01020304, {2,3,4,5})); - std::vector<byte> 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, 0x01, // type A - 0x00, 0x01, // class IN - // Answer 1 - 0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e', - 0x03, 'c', 'o', 'm', - 0x00, - 0x00, 0x01, // RR type - 0x00, 0x01, // class IN - 0x01, 0x02, 0x03, 0x04, // TTL - 0x00, 0x04, // rdata length - 0x02, 0x03, 0x04, 0x05, - }; - EXPECT_EQ(data, pkt.data()); - struct hostent *host = nullptr; - struct ares_addrttl info[5]; - int count = 5; - EXPECT_EQ(ARES_SUCCESS, ares_parse_a_reply(data.data(), data.size(), - &host, info, &count)); - EXPECT_EQ(1, count); - EXPECT_EQ(0x01020304, info[0].ttl); - unsigned long expected_addr = htonl(0x02030405); - EXPECT_EQ(expected_addr, info[0].ipaddr.s_addr); - EXPECT_EQ("2.3.4.5", AddressToString(&(info[0].ipaddr), 4)); - ASSERT_NE(nullptr, host); - std::stringstream ss; - ss << HostEnt(host); - EXPECT_EQ("{'example.com' aliases=[] addrs=[2.3.4.5]}", ss.str()); - ares_free_hostent(host); - - // Repeat without providing a hostent - EXPECT_EQ(ARES_SUCCESS, ares_parse_a_reply(data.data(), data.size(), - nullptr, info, &count)); - EXPECT_EQ(1, count); - EXPECT_EQ(0x01020304, info[0].ttl); - EXPECT_EQ(expected_addr, info[0].ipaddr.s_addr); - EXPECT_EQ("2.3.4.5", AddressToString(&(info[0].ipaddr), 4)); -} - -TEST_F(LibraryTest, ParseMalformedAReply) { - std::vector<byte> data = { - 0x12, 0x34, // [0:2) qid - 0x84, // [2] response + query + AA + not-TC + not-RD - 0x00, // [3] not-RA + not-Z + not-AD + not-CD + rc=NoError - 0x00, 0x01, // [4:6) num questions - 0x00, 0x01, // [6:8) num answer RRs - 0x00, 0x00, // [8:10) num authority RRs - 0x00, 0x00, // [10:12) num additional RRs - // Question - 0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e', // [12:20) - 0x03, 'c', 'o', 'm', // [20,24) - 0x00, // [24] - 0x00, 0x01, // [25:26) type A - 0x00, 0x01, // [27:29) class IN - // Answer 1 - 0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e', // [29:37) - 0x03, 'c', 'o', 'm', // [37:41) - 0x00, // [41] - 0x00, 0x01, // [42:44) RR type - 0x00, 0x01, // [44:46) class IN - 0x01, 0x02, 0x03, 0x04, // [46:50) TTL - 0x00, 0x04, // [50:52) rdata length - 0x02, 0x03, 0x04, 0x05, // [52,56) - }; - struct hostent *host = nullptr; - struct ares_addrttl info[2]; - int count = 2; - - // Invalid RR-len. - std::vector<byte> invalid_rrlen(data); - invalid_rrlen[51] = 180; - EXPECT_EQ(ARES_EBADRESP, ares_parse_a_reply(invalid_rrlen.data(), invalid_rrlen.size(), - &host, info, &count)); - - // Truncate mid-question. - EXPECT_EQ(ARES_EBADRESP, ares_parse_a_reply(data.data(), 26, - &host, info, &count)); - - // Truncate mid-answer. - EXPECT_EQ(ARES_EBADRESP, ares_parse_a_reply(data.data(), 42, - &host, info, &count)); -} - -TEST_F(LibraryTest, ParseAReplyNoData) { - DNSPacket pkt; - pkt.set_qid(0x1234).set_response().set_aa() - .add_question(new DNSQuestion("example.com", ns_t_a)); - std::vector<byte> data = pkt.data(); - struct hostent *host = nullptr; - struct ares_addrttl info[2]; - int count = 2; - EXPECT_EQ(ARES_ENODATA, ares_parse_a_reply(data.data(), data.size(), - &host, info, &count)); - EXPECT_EQ(0, count); - EXPECT_EQ(nullptr, host); - - // Again but with a CNAME. - pkt.add_answer(new DNSCnameRR("example.com", 200, "c.example.com")); - EXPECT_EQ(ARES_ENODATA, ares_parse_a_reply(data.data(), data.size(), - &host, info, &count)); - EXPECT_EQ(0, count); - EXPECT_EQ(nullptr, host); -} - -TEST_F(LibraryTest, ParseAReplyVariantA) { - DNSPacket pkt; - pkt.set_qid(6366).set_rd().set_ra() - .add_question(new DNSQuestion("mit.edu", ns_t_a)) - .add_answer(new DNSARR("mit.edu", 52, {18,7,22,69})) - .add_auth(new DNSNsRR("mit.edu", 292, "W20NS.mit.edu")) - .add_auth(new DNSNsRR("mit.edu", 292, "BITSY.mit.edu")) - .add_auth(new DNSNsRR("mit.edu", 292, "STRAWB.mit.edu")) - .add_additional(new DNSARR("STRAWB.mit.edu", 292, {18,71,0,151})); - struct hostent *host = nullptr; - struct ares_addrttl info[2]; - int count = 2; - std::vector<byte> data = pkt.data(); - EXPECT_EQ(ARES_SUCCESS, ares_parse_a_reply(data.data(), data.size(), - &host, info, &count)); - EXPECT_EQ(1, count); - EXPECT_EQ("18.7.22.69", AddressToString(&(info[0].ipaddr), 4)); - EXPECT_EQ(52, info[0].ttl); - ares_free_hostent(host); -} - -TEST_F(LibraryTest, ParseAReplyJustCname) { - DNSPacket pkt; - pkt.set_qid(6366).set_rd().set_ra() - .add_question(new DNSQuestion("mit.edu", ns_t_a)) - .add_answer(new DNSCnameRR("mit.edu", 52, "other.mit.edu")); - struct hostent *host = nullptr; - struct ares_addrttl info[2]; - int count = 2; - std::vector<byte> data = pkt.data(); - EXPECT_EQ(ARES_SUCCESS, ares_parse_a_reply(data.data(), data.size(), - &host, info, &count)); - EXPECT_EQ(0, count); - ASSERT_NE(nullptr, host); - std::stringstream ss; - ss << HostEnt(host); - EXPECT_EQ("{'other.mit.edu' aliases=[mit.edu] addrs=[]}", ss.str()); - ares_free_hostent(host); -} - -TEST_F(LibraryTest, ParseAReplyVariantCname) { - DNSPacket pkt; - pkt.set_qid(6366).set_rd().set_ra() - .add_question(new DNSQuestion("query.example.com", ns_t_a)) - .add_answer(new DNSCnameRR("query.example.com", 200, "redirect.query.example.com")) - .add_answer(new DNSARR("redirect.query.example.com", 300, {129,97,123,22})) - .add_auth(new DNSNsRR("example.com", 218, "aa.ns1.example.com")) - .add_auth(new DNSNsRR("example.com", 218, "ns2.example.com")) - .add_auth(new DNSNsRR("example.com", 218, "ns3.example.com")) - .add_auth(new DNSNsRR("example.com", 218, "ns4.example.com")) - .add_additional(new DNSARR("aa.ns1.example.com", 218, {129,97,1,1})) - .add_additional(new DNSARR("ns2.example.com", 218, {129,97,1,2})) - .add_additional(new DNSARR("ns3.example.com", 218, {129,97,1,3})) - .add_additional(new DNSARR("ns4.example.com", 218, {129,97,1,4})); - struct hostent *host = nullptr; - struct ares_addrttl info[2]; - int count = 2; - std::vector<byte> data = pkt.data(); - EXPECT_EQ(ARES_SUCCESS, ares_parse_a_reply(data.data(), data.size(), - &host, info, &count)); - EXPECT_EQ(1, count); - EXPECT_EQ("129.97.123.22", AddressToString(&(info[0].ipaddr), 4)); - // TTL is reduced to match CNAME's. - EXPECT_EQ(200, info[0].ttl); - ares_free_hostent(host); - - // Repeat parsing without places to put the results. - count = 0; - EXPECT_EQ(ARES_SUCCESS, ares_parse_a_reply(data.data(), data.size(), - nullptr, info, &count)); -} - -TEST_F(LibraryTest, ParseAReplyVariantCnameChain) { - DNSPacket pkt; - pkt.set_qid(6366).set_rd().set_ra() - .add_question(new DNSQuestion("c1.localhost", ns_t_a)) - .add_answer(new DNSCnameRR("c1.localhost", 604800, "c2.localhost")) - .add_answer(new DNSCnameRR("c2.localhost", 604800, "c3.localhost")) - .add_answer(new DNSCnameRR("c3.localhost", 604800, "c4.localhost")) - .add_answer(new DNSARR("c4.localhost", 604800, {8,8,8,8})) - .add_auth(new DNSNsRR("localhost", 604800, "localhost")) - .add_additional(new DNSARR("localhost", 604800, {127,0,0,1})) - .add_additional(new DNSAaaaRR("localhost", 604800, - {0x7F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01})); - struct hostent *host = nullptr; - struct ares_addrttl info[2]; - int count = 2; - std::vector<byte> data = pkt.data(); - EXPECT_EQ(ARES_SUCCESS, ares_parse_a_reply(data.data(), data.size(), - &host, info, &count)); - EXPECT_EQ(1, count); - EXPECT_EQ("8.8.8.8", AddressToString(&(info[0].ipaddr), 4)); - EXPECT_EQ(604800, info[0].ttl); - ares_free_hostent(host); -} - -TEST_F(LibraryTest, DISABLED_ParseAReplyVariantCnameLast) { - DNSPacket pkt; - pkt.set_qid(6366).set_rd().set_ra() - .add_question(new DNSQuestion("query.example.com", ns_t_a)) - .add_answer(new DNSARR("redirect.query.example.com", 300, {129,97,123,221})) - .add_answer(new DNSARR("redirect.query.example.com", 300, {129,97,123,222})) - .add_answer(new DNSARR("redirect.query.example.com", 300, {129,97,123,223})) - .add_answer(new DNSARR("redirect.query.example.com", 300, {129,97,123,224})) - .add_answer(new DNSCnameRR("query.example.com", 60, "redirect.query.example.com")) - .add_additional(new DNSTxtRR("query.example.com", 60, {"text record"})); - struct hostent *host = nullptr; - struct ares_addrttl info[8]; - int count = 8; - std::vector<byte> data = pkt.data(); - EXPECT_EQ(ARES_SUCCESS, ares_parse_a_reply(data.data(), data.size(), - &host, info, &count)); - EXPECT_EQ(4, count); - EXPECT_EQ("129.97.123.221", AddressToString(&(info[0].ipaddr), 4)); - EXPECT_EQ("129.97.123.222", AddressToString(&(info[1].ipaddr), 4)); - EXPECT_EQ("129.97.123.223", AddressToString(&(info[2].ipaddr), 4)); - EXPECT_EQ("129.97.123.224", AddressToString(&(info[3].ipaddr), 4)); - EXPECT_EQ(300, info[0].ttl); - EXPECT_EQ(300, info[1].ttl); - EXPECT_EQ(300, info[2].ttl); - EXPECT_EQ(300, info[3].ttl); - ares_free_hostent(host); -} - -TEST_F(LibraryTest, ParseAReplyErrors) { - DNSPacket pkt; - pkt.set_qid(0x1234).set_response().set_aa() - .add_question(new DNSQuestion("example.com", ns_t_a)) - .add_answer(new DNSARR("example.com", 100, {0x02, 0x03, 0x04, 0x05})); - std::vector<byte> data; - - struct hostent *host = nullptr; - struct ares_addrttl info[2]; - int count = 2; - - // No question. - pkt.questions_.clear(); - data = pkt.data(); - EXPECT_EQ(ARES_EBADRESP, ares_parse_a_reply(data.data(), data.size(), - &host, info, &count)); - EXPECT_EQ(nullptr, host); - pkt.add_question(new DNSQuestion("example.com", ns_t_a)); - - // Question != answer - pkt.questions_.clear(); - pkt.add_question(new DNSQuestion("Axample.com", ns_t_a)); - data = pkt.data(); - EXPECT_EQ(ARES_ENODATA, ares_parse_a_reply(data.data(), data.size(), - &host, info, &count)); - EXPECT_EQ(nullptr, host); - pkt.questions_.clear(); - pkt.add_question(new DNSQuestion("example.com", ns_t_a)); - -#ifdef DISABLED - // Not a response. - pkt.set_response(false); - data = pkt.data(); - EXPECT_EQ(ARES_EBADRESP, ares_parse_a_reply(data.data(), data.size(), - &host, info, &count)); - EXPECT_EQ(nullptr, host); - pkt.set_response(true); - - // Bad return code. - pkt.set_rcode(ns_r_formerr); - data = pkt.data(); - EXPECT_EQ(ARES_ENODATA, ares_parse_a_reply(data.data(), data.size(), - &host, info, &count)); - EXPECT_EQ(nullptr, host); - pkt.set_rcode(ns_r_noerror); -#endif - - // Two questions - pkt.add_question(new DNSQuestion("example.com", ns_t_a)); - data = pkt.data(); - EXPECT_EQ(ARES_EBADRESP, ares_parse_a_reply(data.data(), data.size(), - &host, info, &count)); - EXPECT_EQ(nullptr, host); - pkt.questions_.clear(); - pkt.add_question(new DNSQuestion("example.com", ns_t_a)); - - // 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_ENODATA, ares_parse_a_reply(data.data(), data.size(), - &host, info, &count)); - EXPECT_EQ(nullptr, host); - pkt.answers_.clear(); - pkt.add_answer(new DNSARR("example.com", 100, {0x02, 0x03, 0x04, 0x05})); - - // No answer. - pkt.answers_.clear(); - data = pkt.data(); - EXPECT_EQ(ARES_ENODATA, ares_parse_a_reply(data.data(), data.size(), - &host, info, &count)); - EXPECT_EQ(nullptr, host); - pkt.add_answer(new DNSARR("example.com", 100, {0x02, 0x03, 0x04, 0x05})); - - // Truncated packets. - data = pkt.data(); - for (size_t len = 1; len < data.size(); len++) { - EXPECT_EQ(ARES_EBADRESP, ares_parse_a_reply(data.data(), len, - &host, info, &count)); - EXPECT_EQ(nullptr, host); - EXPECT_EQ(ARES_EBADRESP, ares_parse_a_reply(data.data(), len, - nullptr, info, &count)); - } -} - -TEST_F(LibraryTest, ParseAReplyAllocFail) { - DNSPacket pkt; - pkt.set_qid(0x1234).set_response().set_aa() - .add_question(new DNSQuestion("example.com", ns_t_a)) - .add_answer(new DNSCnameRR("example.com", 300, "c.example.com")) - .add_answer(new DNSARR("c.example.com", 500, {0x02, 0x03, 0x04, 0x05})); - std::vector<byte> data = pkt.data(); - - struct hostent *host = nullptr; - struct ares_addrttl info[2]; - int count = 2; - - for (int ii = 1; ii <= 8; ii++) { - ClearFails(); - SetAllocFail(ii); - EXPECT_EQ(ARES_ENOMEM, ares_parse_a_reply(data.data(), data.size(), - &host, info, &count)) << ii; - EXPECT_EQ(nullptr, host); - } -} - -} // namespace test -} // namespace ares |