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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
commit | 19fcec84d8d7d21e796c7624e521b60d28ee21ed (patch) | |
tree | 42d26aa27d1e3f7c0b8bd3fd14e7d7082f5008dc /src/c-ares/test/ares-test-parse-ptr.cc | |
parent | Initial commit. (diff) | |
download | ceph-upstream.tar.xz ceph-upstream.zip |
Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/c-ares/test/ares-test-parse-ptr.cc')
-rw-r--r-- | src/c-ares/test/ares-test-parse-ptr.cc | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/src/c-ares/test/ares-test-parse-ptr.cc b/src/c-ares/test/ares-test-parse-ptr.cc new file mode 100644 index 000000000..c769b29c6 --- /dev/null +++ b/src/c-ares/test/ares-test-parse-ptr.cc @@ -0,0 +1,249 @@ +#include "ares-test.h" +#include "dns-proto.h" + +#include <sstream> +#include <vector> + +namespace ares { +namespace test { + +TEST_F(LibraryTest, ParsePtrReplyOK) { + byte addrv4[4] = {0x10, 0x20, 0x30, 0x40}; + DNSPacket pkt; + pkt.set_qid(0x1234).set_response().set_aa() + .add_question(new DNSQuestion("64.48.32.16.in-addr.arpa", ns_t_ptr)) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other.com")); + std::vector<byte> data = pkt.data(); + + struct hostent *host = nullptr; + EXPECT_EQ(ARES_SUCCESS, ares_parse_ptr_reply(data.data(), data.size(), + addrv4, sizeof(addrv4), AF_INET, &host)); + ASSERT_NE(nullptr, host); + std::stringstream ss; + ss << HostEnt(host); + EXPECT_EQ("{'other.com' aliases=[other.com] addrs=[16.32.48.64]}", ss.str()); + ares_free_hostent(host); +} + +TEST_F(LibraryTest, ParsePtrReplyCname) { + byte addrv4[4] = {0x10, 0x20, 0x30, 0x40}; + DNSPacket pkt; + pkt.set_qid(0x1234).set_response().set_aa() + .add_question(new DNSQuestion("64.48.32.16.in-addr.arpa", ns_t_ptr)) + .add_answer(new DNSCnameRR("64.48.32.16.in-addr.arpa", 50, "64.48.32.8.in-addr.arpa")) + .add_answer(new DNSPtrRR("64.48.32.8.in-addr.arpa", 100, "other.com")); + std::vector<byte> data = pkt.data(); + + struct hostent *host = nullptr; + EXPECT_EQ(ARES_SUCCESS, ares_parse_ptr_reply(data.data(), data.size(), + addrv4, sizeof(addrv4), AF_INET, &host)); + ASSERT_NE(nullptr, host); + std::stringstream ss; + ss << HostEnt(host); + EXPECT_EQ("{'other.com' aliases=[other.com] addrs=[16.32.48.64]}", ss.str()); + ares_free_hostent(host); +} + + +struct DNSMalformedCnameRR : public DNSCnameRR { + DNSMalformedCnameRR(const std::string& name, int ttl, const std::string& other) + : DNSCnameRR(name, ttl, other) {} + std::vector<byte> data() const { + std::vector<byte> data = DNSRR::data(); + std::vector<byte> encname = EncodeString(other_); + encname[0] = encname[0] + 63; // invalid label length + int len = encname.size(); + PushInt16(&data, len); + data.insert(data.end(), encname.begin(), encname.end()); + return data; + } +}; + +TEST_F(LibraryTest, ParsePtrReplyMalformedCname) { + byte addrv4[4] = {0x10, 0x20, 0x30, 0x40}; + DNSPacket pkt; + pkt.set_qid(0x1234).set_response().set_aa() + .add_question(new DNSQuestion("64.48.32.16.in-addr.arpa", ns_t_ptr)) + .add_answer(new DNSMalformedCnameRR("64.48.32.16.in-addr.arpa", 50, "64.48.32.8.in-addr.arpa")) + .add_answer(new DNSPtrRR("64.48.32.8.in-addr.arpa", 100, "other.com")); + std::vector<byte> data = pkt.data(); + + struct hostent *host = nullptr; + EXPECT_EQ(ARES_EBADRESP, ares_parse_ptr_reply(data.data(), data.size(), + addrv4, sizeof(addrv4), AF_INET, &host)); + ASSERT_EQ(nullptr, host); +} + +TEST_F(LibraryTest, ParseManyPtrReply) { + byte addrv4[4] = {0x10, 0x20, 0x30, 0x40}; + DNSPacket pkt; + pkt.set_qid(0x1234).set_response().set_aa() + .add_question(new DNSQuestion("64.48.32.16.in-addr.arpa", ns_t_ptr)) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "main.com")) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other1.com")) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other2.com")) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other3.com")) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other4.com")) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other5.com")) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other6.com")) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other7.com")) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other8.com")) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other9.com")); + std::vector<byte> data = pkt.data(); + + struct hostent *host = nullptr; + EXPECT_EQ(ARES_SUCCESS, ares_parse_ptr_reply(data.data(), data.size(), + addrv4, sizeof(addrv4), AF_INET, &host)); + ASSERT_NE(nullptr, host); + ares_free_hostent(host); +} + +TEST_F(LibraryTest, ParsePtrReplyAdditional) { + byte addrv4[4] = {0x10, 0x20, 0x30, 0x40}; + DNSPacket pkt; + pkt.set_qid(0x1234).set_response().set_aa() + .add_question(new DNSQuestion("64.48.32.16.in-addr.arpa", ns_t_ptr)) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 55, "other.com")) + .add_auth(new DNSNsRR("16.in-addr.arpa", 234, "ns1.other.com")) + .add_auth(new DNSNsRR("16.in-addr.arpa", 234, "bb.ns2.other.com")) + .add_auth(new DNSNsRR("16.in-addr.arpa", 234, "ns3.other.com")) + .add_additional(new DNSARR("ns1.other.com", 229, {10,20,30,41})) + .add_additional(new DNSARR("bb.ns2.other.com", 229, {10,20,30,42})) + .add_additional(new DNSARR("ns3.other.com", 229, {10,20,30,43})); + std::vector<byte> data = pkt.data(); + + struct hostent *host = nullptr; + EXPECT_EQ(ARES_SUCCESS, ares_parse_ptr_reply(data.data(), data.size(), + addrv4, sizeof(addrv4), AF_INET, &host)); + ASSERT_NE(nullptr, host); + std::stringstream ss; + ss << HostEnt(host); + EXPECT_EQ("{'other.com' aliases=[other.com] addrs=[16.32.48.64]}", ss.str()); + ares_free_hostent(host); +} + +TEST_F(LibraryTest, ParsePtrReplyErrors) { + byte addrv4[4] = {0x10, 0x20, 0x30, 0x40}; + DNSPacket pkt; + pkt.set_qid(0x1234).set_response().set_aa() + .add_question(new DNSQuestion("64.48.32.16.in-addr.arpa", ns_t_ptr)) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other.com")); + std::vector<byte> data; + struct hostent *host = nullptr; + + // No question. + pkt.questions_.clear(); + data = pkt.data(); + EXPECT_EQ(ARES_EBADRESP, ares_parse_ptr_reply(data.data(), data.size(), + addrv4, sizeof(addrv4), AF_INET, &host)); + pkt.add_question(new DNSQuestion("64.48.32.16.in-addr.arpa", ns_t_ptr)); + + // Question != answer + pkt.questions_.clear(); + pkt.add_question(new DNSQuestion("99.48.32.16.in-addr.arpa", ns_t_ptr)); + data = pkt.data(); + EXPECT_EQ(ARES_ENODATA, ares_parse_ptr_reply(data.data(), data.size(), + addrv4, sizeof(addrv4), AF_INET, &host)); + EXPECT_EQ(nullptr, host); + pkt.questions_.clear(); + pkt.add_question(new DNSQuestion("64.48.32.16.in-addr.arpa", ns_t_ptr)); + + // Two questions. + pkt.add_question(new DNSQuestion("64.48.32.16.in-addr.arpa", ns_t_ptr)); + data = pkt.data(); + EXPECT_EQ(ARES_EBADRESP, ares_parse_ptr_reply(data.data(), data.size(), + addrv4, sizeof(addrv4), AF_INET, &host)); + EXPECT_EQ(nullptr, host); + 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_ENODATA, ares_parse_ptr_reply(data.data(), data.size(), + addrv4, sizeof(addrv4), AF_INET, &host)); + EXPECT_EQ(nullptr, host); + pkt.answers_.clear(); + pkt.add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other.com")); + + // No answer. + pkt.answers_.clear(); + data = pkt.data(); + EXPECT_EQ(ARES_ENODATA, ares_parse_ptr_reply(data.data(), data.size(), + addrv4, sizeof(addrv4), AF_INET, &host)); + EXPECT_EQ(nullptr, host); + pkt.add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other.com")); + + // Truncated packets. + data = pkt.data(); + for (size_t len = 1; len < data.size(); len++) { + EXPECT_EQ(ARES_EBADRESP, ares_parse_ptr_reply(data.data(), len, + addrv4, sizeof(addrv4), AF_INET, &host)); + EXPECT_EQ(nullptr, host); + } + + // Truncated packets with CNAME. + pkt.add_answer(new DNSCnameRR("64.48.32.16.in-addr.arpa", 50, "64.48.32.8.in-addr.arpa")); + data = pkt.data(); + for (size_t len = 1; len < data.size(); len++) { + EXPECT_EQ(ARES_EBADRESP, ares_parse_ptr_reply(data.data(), len, + addrv4, sizeof(addrv4), AF_INET, &host)); + EXPECT_EQ(nullptr, host); + } +} + +TEST_F(LibraryTest, ParsePtrReplyAllocFailSome) { + byte addrv4[4] = {0x10, 0x20, 0x30, 0x40}; + DNSPacket pkt; + pkt.set_qid(0x1234).set_response().set_aa() + .add_question(new DNSQuestion("64.48.32.16.in-addr.arpa", ns_t_ptr)) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "main.com")) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other1.com")) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other2.com")) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other3.com")); + std::vector<byte> data = pkt.data(); + struct hostent *host = nullptr; + + for (int ii = 1; ii <= 18; ii++) { + ClearFails(); + SetAllocFail(ii); + EXPECT_EQ(ARES_ENOMEM, ares_parse_ptr_reply(data.data(), data.size(), + addrv4, sizeof(addrv4), AF_INET, &host)) << ii; + } +} + +TEST_F(LibraryTest, ParsePtrReplyAllocFailMany) { + byte addrv4[4] = {0x10, 0x20, 0x30, 0x40}; + DNSPacket pkt; + pkt.set_qid(0x1234).set_response().set_aa() + .add_question(new DNSQuestion("64.48.32.16.in-addr.arpa", ns_t_ptr)) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "main.com")) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other1.com")) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other2.com")) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other3.com")) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other4.com")) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other5.com")) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other6.com")) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other7.com")) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other8.com")) + .add_answer(new DNSPtrRR("64.48.32.16.in-addr.arpa", 100, "other9.com")); + std::vector<byte> data = pkt.data(); + struct hostent *host = nullptr; + + for (int ii = 1; ii <= 63; ii++) { + ClearFails(); + SetAllocFail(ii); + int rc = ares_parse_ptr_reply(data.data(), data.size(), + addrv4, sizeof(addrv4), AF_INET, &host); + if (rc != ARES_ENOMEM) { + EXPECT_EQ(ARES_SUCCESS, rc); + ares_free_hostent(host); + host = nullptr; + } + } +} + + +} // namespace test +} // namespace ares |