192 lines
7.3 KiB
C++
192 lines
7.3 KiB
C++
#include "ares-test.h"
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#include "dns-proto.h"
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#include <sstream>
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#include <vector>
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namespace ares {
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namespace test {
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TEST_F(LibraryTest, ParseAaaaReplyOK) {
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DNSPacket pkt;
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pkt.set_qid(0x1234).set_response().set_aa()
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.add_question(new DNSQuestion("example.com", ns_t_aaaa))
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.add_answer(new DNSAaaaRR("example.com", 100,
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{0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02,
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0x03, 0x03, 0x03, 0x03, 0x04, 0x04, 0x04, 0x04}));
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std::vector<byte> data = pkt.data();
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struct hostent *host = nullptr;
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struct ares_addr6ttl info[5];
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int count = 5;
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EXPECT_EQ(ARES_SUCCESS, ares_parse_aaaa_reply(data.data(), data.size(),
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&host, info, &count));
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EXPECT_EQ(1, count);
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EXPECT_EQ(100, info[0].ttl);
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EXPECT_EQ(0x01, info[0].ip6addr._S6_un._S6_u8[0]);
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EXPECT_EQ(0x02, info[0].ip6addr._S6_un._S6_u8[4]);
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ASSERT_NE(nullptr, host);
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std::stringstream ss;
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ss << HostEnt(host);
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EXPECT_EQ("{'example.com' aliases=[] addrs=[0101:0101:0202:0202:0303:0303:0404:0404]}", ss.str());
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ares_free_hostent(host);
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// Repeat without providing places to put the results
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count = 0;
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EXPECT_EQ(ARES_SUCCESS, ares_parse_aaaa_reply(data.data(), data.size(),
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nullptr, info, &count));
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}
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TEST_F(LibraryTest, ParseAaaaReplyCname) {
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DNSPacket pkt;
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pkt.set_qid(0x1234).set_response().set_aa()
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.add_question(new DNSQuestion("example.com", ns_t_aaaa))
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.add_answer(new DNSCnameRR("example.com", 50, "c.example.com"))
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.add_answer(new DNSAaaaRR("c.example.com", 100,
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{0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02,
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0x03, 0x03, 0x03, 0x03, 0x04, 0x04, 0x04, 0x04}));
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std::vector<byte> data = pkt.data();
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struct hostent *host = nullptr;
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struct ares_addr6ttl info[5];
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int count = 5;
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EXPECT_EQ(ARES_SUCCESS, ares_parse_aaaa_reply(data.data(), data.size(),
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&host, info, &count));
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EXPECT_EQ(1, count);
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// CNAME TTL overrides AAAA TTL.
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EXPECT_EQ(50, info[0].ttl);
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EXPECT_EQ(0x01, info[0].ip6addr._S6_un._S6_u8[0]);
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EXPECT_EQ(0x02, info[0].ip6addr._S6_un._S6_u8[4]);
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ASSERT_NE(nullptr, host);
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std::stringstream ss;
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ss << HostEnt(host);
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EXPECT_EQ("{'c.example.com' aliases=[example.com] addrs=[0101:0101:0202:0202:0303:0303:0404:0404]}", ss.str());
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ares_free_hostent(host);
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// Repeat without providing a hostent
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count = 5;
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EXPECT_EQ(ARES_SUCCESS, ares_parse_aaaa_reply(data.data(), data.size(),
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nullptr, info, &count));
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EXPECT_EQ(1, count);
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EXPECT_EQ(50, info[0].ttl);
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EXPECT_EQ(0x01, info[0].ip6addr._S6_un._S6_u8[0]);
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EXPECT_EQ(0x02, info[0].ip6addr._S6_un._S6_u8[4]);
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}
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TEST_F(LibraryTest, ParseAaaaReplyNoData) {
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DNSPacket pkt;
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pkt.set_qid(0x1234).set_response().set_aa()
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.add_question(new DNSQuestion("example.com", ns_t_aaaa));
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std::vector<byte> data = pkt.data();
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struct hostent *host = nullptr;
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struct ares_addr6ttl info[2];
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int count = 2;
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EXPECT_EQ(ARES_ENODATA, ares_parse_aaaa_reply(data.data(), data.size(),
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&host, info, &count));
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EXPECT_EQ(0, count);
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EXPECT_EQ(nullptr, host);
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// Again but with a CNAME.
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pkt.add_answer(new DNSCnameRR("example.com", 200, "c.example.com"));
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EXPECT_EQ(ARES_ENODATA, ares_parse_aaaa_reply(data.data(), data.size(),
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&host, info, &count));
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EXPECT_EQ(0, count);
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EXPECT_EQ(nullptr, host);
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}
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TEST_F(LibraryTest, ParseAaaaReplyErrors) {
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DNSPacket pkt;
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pkt.set_qid(0x1234).set_response().set_aa()
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.add_question(new DNSQuestion("example.com", ns_t_aaaa))
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.add_answer(new DNSAaaaRR("example.com", 100,
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{0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02,
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0x03, 0x03, 0x03, 0x03, 0x04, 0x04, 0x04, 0x04}));
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std::vector<byte> data;
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struct hostent *host = nullptr;
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struct ares_addr6ttl info[2];
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int count = 2;
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// No question.
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pkt.questions_.clear();
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data = pkt.data();
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EXPECT_EQ(ARES_EBADRESP, ares_parse_aaaa_reply(data.data(), data.size(),
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&host, info, &count));
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EXPECT_EQ(nullptr, host);
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pkt.add_question(new DNSQuestion("example.com", ns_t_aaaa));
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// Question != answer
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pkt.questions_.clear();
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pkt.add_question(new DNSQuestion("Axample.com", ns_t_aaaa));
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data = pkt.data();
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EXPECT_EQ(ARES_ENODATA, ares_parse_aaaa_reply(data.data(), data.size(),
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&host, info, &count));
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EXPECT_EQ(nullptr, host);
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pkt.questions_.clear();
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pkt.add_question(new DNSQuestion("example.com", ns_t_aaaa));
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// Two questions.
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pkt.add_question(new DNSQuestion("example.com", ns_t_aaaa));
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data = pkt.data();
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EXPECT_EQ(ARES_EBADRESP, ares_parse_aaaa_reply(data.data(), data.size(),
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&host, info, &count));
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EXPECT_EQ(nullptr, host);
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pkt.questions_.clear();
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pkt.add_question(new DNSQuestion("example.com", ns_t_aaaa));
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// Wrong sort of answer.
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pkt.answers_.clear();
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pkt.add_answer(new DNSMxRR("example.com", 100, 100, "mx1.example.com"));
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data = pkt.data();
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EXPECT_EQ(ARES_ENODATA, ares_parse_aaaa_reply(data.data(), data.size(),
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&host, info, &count));
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EXPECT_EQ(nullptr, host);
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pkt.answers_.clear();
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pkt.add_answer(new DNSAaaaRR("example.com", 100,
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{0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02,
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0x03, 0x03, 0x03, 0x03, 0x04, 0x04, 0x04, 0x04}));
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// No answer.
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pkt.answers_.clear();
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data = pkt.data();
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EXPECT_EQ(ARES_ENODATA, ares_parse_aaaa_reply(data.data(), data.size(),
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&host, info, &count));
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EXPECT_EQ(nullptr, host);
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pkt.add_answer(new DNSAaaaRR("example.com", 100,
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{0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02,
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0x03, 0x03, 0x03, 0x03, 0x04, 0x04, 0x04, 0x04}));
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// Truncated packets.
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data = pkt.data();
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for (size_t len = 1; len < data.size(); len++) {
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EXPECT_EQ(ARES_EBADRESP, ares_parse_aaaa_reply(data.data(), len,
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&host, info, &count));
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EXPECT_EQ(nullptr, host);
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EXPECT_EQ(ARES_EBADRESP, ares_parse_aaaa_reply(data.data(), len,
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nullptr, info, &count));
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}
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}
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TEST_F(LibraryTest, ParseAaaaReplyAllocFail) {
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DNSPacket pkt;
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pkt.set_qid(0x1234).set_response().set_aa()
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.add_question(new DNSQuestion("example.com", ns_t_aaaa))
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.add_answer(new DNSCnameRR("example.com", 300, "c.example.com"))
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.add_answer(new DNSAaaaRR("c.example.com", 100,
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{0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02,
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0x03, 0x03, 0x03, 0x03, 0x04, 0x04, 0x04, 0x04}));
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std::vector<byte> data = pkt.data();
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struct hostent *host = nullptr;
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struct ares_addr6ttl info[2];
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int count = 2;
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for (int ii = 1; ii <= 8; ii++) {
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ClearFails();
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SetAllocFail(ii);
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EXPECT_EQ(ARES_ENOMEM, ares_parse_aaaa_reply(data.data(), data.size(),
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&host, info, &count)) << ii;
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EXPECT_EQ(nullptr, host);
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}
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}
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} // namespace test
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} // namespace ares
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