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-rw-r--r--test/ares-test-mock.cc1173
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diff --git a/test/ares-test-mock.cc b/test/ares-test-mock.cc
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+++ b/test/ares-test-mock.cc
@@ -0,0 +1,1173 @@
+#include "ares-test.h"
+#include "dns-proto.h"
+
+#include <sstream>
+#include <vector>
+
+using testing::InvokeWithoutArgs;
+using testing::DoAll;
+
+namespace ares {
+namespace test {
+
+TEST_P(MockChannelTest, Basic) {
+ std::vector<byte> reply = {
+ 0x00, 0x00, // qid
+ 0x84, // response + query + AA + not-TC + not-RD
+ 0x00, // not-RA + not-Z + not-AD + not-CD + rc=NoError
+ 0x00, 0x01, // 1 question
+ 0x00, 0x01, // 1 answer RRs
+ 0x00, 0x00, // 0 authority RRs
+ 0x00, 0x00, // 0 additional RRs
+ // Question
+ 0x03, 'w', 'w', 'w',
+ 0x06, 'g', 'o', 'o', 'g', 'l', 'e',
+ 0x03, 'c', 'o', 'm',
+ 0x00,
+ 0x00, 0x01, // type A
+ 0x00, 0x01, // class IN
+ // Answer
+ 0x03, 'w', 'w', 'w',
+ 0x06, 'g', 'o', 'o', 'g', 'l', 'e',
+ 0x03, 'c', 'o', 'm',
+ 0x00,
+ 0x00, 0x01, // type A
+ 0x00, 0x01, // class IN
+ 0x00, 0x00, 0x01, 0x00, // TTL
+ 0x00, 0x04, // rdata length
+ 0x01, 0x02, 0x03, 0x04
+ };
+
+ ON_CALL(server_, OnRequest("www.google.com", ns_t_a))
+ .WillByDefault(SetReplyData(&server_, reply));
+
+ HostResult result;
+ ares_gethostbyname(channel_, "www.google.com.", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ std::stringstream ss;
+ ss << result.host_;
+ EXPECT_EQ("{'www.google.com' aliases=[] addrs=[1.2.3.4]}", ss.str());
+}
+
+// UDP only so mock server doesn't get confused by concatenated requests
+TEST_P(MockUDPChannelTest, GetHostByNameParallelLookups) {
+ DNSPacket rsp1;
+ rsp1.set_response().set_aa()
+ .add_question(new DNSQuestion("www.google.com", ns_t_a))
+ .add_answer(new DNSARR("www.google.com", 100, {2, 3, 4, 5}));
+ ON_CALL(server_, OnRequest("www.google.com", ns_t_a))
+ .WillByDefault(SetReply(&server_, &rsp1));
+ DNSPacket rsp2;
+ rsp2.set_response().set_aa()
+ .add_question(new DNSQuestion("www.example.com", ns_t_a))
+ .add_answer(new DNSARR("www.example.com", 100, {1, 2, 3, 4}));
+ ON_CALL(server_, OnRequest("www.example.com", ns_t_a))
+ .WillByDefault(SetReply(&server_, &rsp2));
+
+ HostResult result1;
+ ares_gethostbyname(channel_, "www.google.com.", AF_INET, HostCallback, &result1);
+ HostResult result2;
+ ares_gethostbyname(channel_, "www.example.com.", AF_INET, HostCallback, &result2);
+ HostResult result3;
+ ares_gethostbyname(channel_, "www.google.com.", AF_INET, HostCallback, &result3);
+ Process();
+ EXPECT_TRUE(result1.done_);
+ EXPECT_TRUE(result2.done_);
+ EXPECT_TRUE(result3.done_);
+ std::stringstream ss1;
+ ss1 << result1.host_;
+ EXPECT_EQ("{'www.google.com' aliases=[] addrs=[2.3.4.5]}", ss1.str());
+ std::stringstream ss2;
+ ss2 << result2.host_;
+ EXPECT_EQ("{'www.example.com' aliases=[] addrs=[1.2.3.4]}", ss2.str());
+ std::stringstream ss3;
+ ss3 << result3.host_;
+ EXPECT_EQ("{'www.google.com' aliases=[] addrs=[2.3.4.5]}", ss3.str());
+}
+
+// UDP to TCP specific test
+TEST_P(MockUDPChannelTest, TruncationRetry) {
+ DNSPacket rsptruncated;
+ rsptruncated.set_response().set_aa().set_tc()
+ .add_question(new DNSQuestion("www.google.com", ns_t_a));
+ DNSPacket rspok;
+ rspok.set_response()
+ .add_question(new DNSQuestion("www.google.com", ns_t_a))
+ .add_answer(new DNSARR("www.google.com", 100, {1, 2, 3, 4}));
+ EXPECT_CALL(server_, OnRequest("www.google.com", ns_t_a))
+ .WillOnce(SetReply(&server_, &rsptruncated))
+ .WillOnce(SetReply(&server_, &rspok));
+ HostResult result;
+ ares_gethostbyname(channel_, "www.google.com.", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ std::stringstream ss;
+ ss << result.host_;
+ EXPECT_EQ("{'www.google.com' aliases=[] addrs=[1.2.3.4]}", ss.str());
+}
+
+static int sock_cb_count = 0;
+static int SocketConnectCallback(ares_socket_t fd, int type, void *data) {
+ int rc = *(int*)data;
+ if (verbose) std::cerr << "SocketConnectCallback(" << fd << ") invoked" << std::endl;
+ sock_cb_count++;
+ return rc;
+}
+
+TEST_P(MockChannelTest, SockCallback) {
+ DNSPacket rsp;
+ rsp.set_response().set_aa()
+ .add_question(new DNSQuestion("www.google.com", ns_t_a))
+ .add_answer(new DNSARR("www.google.com", 100, {2, 3, 4, 5}));
+ EXPECT_CALL(server_, OnRequest("www.google.com", ns_t_a))
+ .WillOnce(SetReply(&server_, &rsp));
+
+ // Get notified of new sockets
+ int rc = ARES_SUCCESS;
+ ares_set_socket_callback(channel_, SocketConnectCallback, &rc);
+
+ HostResult result;
+ sock_cb_count = 0;
+ ares_gethostbyname(channel_, "www.google.com.", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_EQ(1, sock_cb_count);
+ EXPECT_TRUE(result.done_);
+ std::stringstream ss;
+ ss << result.host_;
+ EXPECT_EQ("{'www.google.com' aliases=[] addrs=[2.3.4.5]}", ss.str());
+}
+
+TEST_P(MockChannelTest, SockFailCallback) {
+ // Notification of new sockets gives an error.
+ int rc = -1;
+ ares_set_socket_callback(channel_, SocketConnectCallback, &rc);
+
+ HostResult result;
+ sock_cb_count = 0;
+ ares_gethostbyname(channel_, "www.google.com.", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_LT(1, sock_cb_count);
+ EXPECT_TRUE(result.done_);
+ EXPECT_EQ(ARES_ECONNREFUSED, result.status_);
+}
+
+static int sock_config_cb_count = 0;
+static int SocketConfigureCallback(ares_socket_t fd, int type, void *data) {
+ int rc = *(int*)data;
+ if (verbose) std::cerr << "SocketConfigureCallback(" << fd << ") invoked" << std::endl;
+ sock_config_cb_count++;
+ return rc;
+}
+
+TEST_P(MockChannelTest, SockConfigureCallback) {
+ DNSPacket rsp;
+ rsp.set_response().set_aa()
+ .add_question(new DNSQuestion("www.google.com", ns_t_a))
+ .add_answer(new DNSARR("www.google.com", 100, {2, 3, 4, 5}));
+ EXPECT_CALL(server_, OnRequest("www.google.com", ns_t_a))
+ .WillOnce(SetReply(&server_, &rsp));
+
+ // Get notified of new sockets
+ int rc = ARES_SUCCESS;
+ ares_set_socket_configure_callback(channel_, SocketConfigureCallback, &rc);
+
+ HostResult result;
+ sock_config_cb_count = 0;
+ ares_gethostbyname(channel_, "www.google.com.", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_EQ(1, sock_config_cb_count);
+ EXPECT_TRUE(result.done_);
+ std::stringstream ss;
+ ss << result.host_;
+ EXPECT_EQ("{'www.google.com' aliases=[] addrs=[2.3.4.5]}", ss.str());
+}
+
+TEST_P(MockChannelTest, SockConfigureFailCallback) {
+ // Notification of new sockets gives an error.
+ int rc = -1;
+ ares_set_socket_configure_callback(channel_, SocketConfigureCallback, &rc);
+
+ HostResult result;
+ sock_config_cb_count = 0;
+ ares_gethostbyname(channel_, "www.google.com.", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_LT(1, sock_config_cb_count);
+ EXPECT_TRUE(result.done_);
+ EXPECT_EQ(ARES_ECONNREFUSED, result.status_);
+}
+
+// TCP only to prevent retries
+TEST_P(MockTCPChannelTest, MalformedResponse) {
+ std::vector<byte> one = {0x01};
+ EXPECT_CALL(server_, OnRequest("www.google.com", ns_t_a))
+ .WillOnce(SetReplyData(&server_, one));
+
+ HostResult result;
+ ares_gethostbyname(channel_, "www.google.com.", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ EXPECT_EQ(ARES_ETIMEOUT, result.status_);
+}
+
+TEST_P(MockTCPChannelTest, FormErrResponse) {
+ DNSPacket rsp;
+ rsp.set_response().set_aa()
+ .add_question(new DNSQuestion("www.google.com", ns_t_a));
+ rsp.set_rcode(ns_r_formerr);
+ EXPECT_CALL(server_, OnRequest("www.google.com", ns_t_a))
+ .WillOnce(SetReply(&server_, &rsp));
+ HostResult result;
+ ares_gethostbyname(channel_, "www.google.com.", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ EXPECT_EQ(ARES_EFORMERR, result.status_);
+}
+
+TEST_P(MockTCPChannelTest, ServFailResponse) {
+ DNSPacket rsp;
+ rsp.set_response().set_aa()
+ .add_question(new DNSQuestion("www.google.com", ns_t_a));
+ rsp.set_rcode(ns_r_servfail);
+ EXPECT_CALL(server_, OnRequest("www.google.com", ns_t_a))
+ .WillOnce(SetReply(&server_, &rsp));
+ HostResult result;
+ ares_gethostbyname(channel_, "www.google.com.", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ // ARES_FLAG_NOCHECKRESP not set, so SERVFAIL consumed
+ EXPECT_EQ(ARES_ECONNREFUSED, result.status_);
+}
+
+TEST_P(MockTCPChannelTest, NotImplResponse) {
+ DNSPacket rsp;
+ rsp.set_response().set_aa()
+ .add_question(new DNSQuestion("www.google.com", ns_t_a));
+ rsp.set_rcode(ns_r_notimpl);
+ EXPECT_CALL(server_, OnRequest("www.google.com", ns_t_a))
+ .WillOnce(SetReply(&server_, &rsp));
+ HostResult result;
+ ares_gethostbyname(channel_, "www.google.com.", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ // ARES_FLAG_NOCHECKRESP not set, so NOTIMPL consumed
+ EXPECT_EQ(ARES_ECONNREFUSED, result.status_);
+}
+
+TEST_P(MockTCPChannelTest, RefusedResponse) {
+ DNSPacket rsp;
+ rsp.set_response().set_aa()
+ .add_question(new DNSQuestion("www.google.com", ns_t_a));
+ rsp.set_rcode(ns_r_refused);
+ EXPECT_CALL(server_, OnRequest("www.google.com", ns_t_a))
+ .WillOnce(SetReply(&server_, &rsp));
+ HostResult result;
+ ares_gethostbyname(channel_, "www.google.com.", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ // ARES_FLAG_NOCHECKRESP not set, so REFUSED consumed
+ EXPECT_EQ(ARES_ECONNREFUSED, result.status_);
+}
+
+TEST_P(MockTCPChannelTest, YXDomainResponse) {
+ DNSPacket rsp;
+ rsp.set_response().set_aa()
+ .add_question(new DNSQuestion("www.google.com", ns_t_a));
+ rsp.set_rcode(ns_r_yxdomain);
+ EXPECT_CALL(server_, OnRequest("www.google.com", ns_t_a))
+ .WillOnce(SetReply(&server_, &rsp));
+ HostResult result;
+ ares_gethostbyname(channel_, "www.google.com.", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ EXPECT_EQ(ARES_ENODATA, result.status_);
+}
+
+class MockExtraOptsTest
+ : public MockChannelOptsTest,
+ public ::testing::WithParamInterface< std::pair<int, bool> > {
+ public:
+ MockExtraOptsTest()
+ : MockChannelOptsTest(1, GetParam().first, GetParam().second,
+ FillOptions(&opts_),
+ ARES_OPT_SOCK_SNDBUF|ARES_OPT_SOCK_RCVBUF) {}
+ static struct ares_options* FillOptions(struct ares_options * opts) {
+ memset(opts, 0, sizeof(struct ares_options));
+ // Set a few options that affect socket communications
+ opts->socket_send_buffer_size = 514;
+ opts->socket_receive_buffer_size = 514;
+ return opts;
+ }
+ private:
+ struct ares_options opts_;
+};
+
+TEST_P(MockExtraOptsTest, SimpleQuery) {
+ ares_set_local_ip4(channel_, 0x7F000001);
+ byte addr6[16] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01};
+ ares_set_local_ip6(channel_, addr6);
+ ares_set_local_dev(channel_, "dummy");
+
+ DNSPacket rsp;
+ rsp.set_response().set_aa()
+ .add_question(new DNSQuestion("www.google.com", ns_t_a))
+ .add_answer(new DNSARR("www.google.com", 100, {2, 3, 4, 5}));
+ ON_CALL(server_, OnRequest("www.google.com", ns_t_a))
+ .WillByDefault(SetReply(&server_, &rsp));
+
+ HostResult result;
+ ares_gethostbyname(channel_, "www.google.com.", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ std::stringstream ss;
+ ss << result.host_;
+ EXPECT_EQ("{'www.google.com' aliases=[] addrs=[2.3.4.5]}", ss.str());
+}
+
+class MockFlagsChannelOptsTest
+ : public MockChannelOptsTest,
+ public ::testing::WithParamInterface< std::pair<int, bool> > {
+ public:
+ MockFlagsChannelOptsTest(int flags)
+ : MockChannelOptsTest(1, GetParam().first, GetParam().second,
+ FillOptions(&opts_, flags), ARES_OPT_FLAGS) {}
+ static struct ares_options* FillOptions(struct ares_options * opts, int flags) {
+ memset(opts, 0, sizeof(struct ares_options));
+ opts->flags = flags;
+ return opts;
+ }
+ private:
+ struct ares_options opts_;
+};
+
+class MockNoCheckRespChannelTest : public MockFlagsChannelOptsTest {
+ public:
+ MockNoCheckRespChannelTest() : MockFlagsChannelOptsTest(ARES_FLAG_NOCHECKRESP) {}
+};
+
+TEST_P(MockNoCheckRespChannelTest, ServFailResponse) {
+ DNSPacket rsp;
+ rsp.set_response().set_aa()
+ .add_question(new DNSQuestion("www.google.com", ns_t_a));
+ rsp.set_rcode(ns_r_servfail);
+ ON_CALL(server_, OnRequest("www.google.com", ns_t_a))
+ .WillByDefault(SetReply(&server_, &rsp));
+ HostResult result;
+ ares_gethostbyname(channel_, "www.google.com.", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ EXPECT_EQ(ARES_ESERVFAIL, result.status_);
+}
+
+TEST_P(MockNoCheckRespChannelTest, NotImplResponse) {
+ DNSPacket rsp;
+ rsp.set_response().set_aa()
+ .add_question(new DNSQuestion("www.google.com", ns_t_a));
+ rsp.set_rcode(ns_r_notimpl);
+ ON_CALL(server_, OnRequest("www.google.com", ns_t_a))
+ .WillByDefault(SetReply(&server_, &rsp));
+ HostResult result;
+ ares_gethostbyname(channel_, "www.google.com.", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ EXPECT_EQ(ARES_ENOTIMP, result.status_);
+}
+
+TEST_P(MockNoCheckRespChannelTest, RefusedResponse) {
+ DNSPacket rsp;
+ rsp.set_response().set_aa()
+ .add_question(new DNSQuestion("www.google.com", ns_t_a));
+ rsp.set_rcode(ns_r_refused);
+ ON_CALL(server_, OnRequest("www.google.com", ns_t_a))
+ .WillByDefault(SetReply(&server_, &rsp));
+ HostResult result;
+ ares_gethostbyname(channel_, "www.google.com.", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ EXPECT_EQ(ARES_EREFUSED, result.status_);
+}
+
+class MockEDNSChannelTest : public MockFlagsChannelOptsTest {
+ public:
+ MockEDNSChannelTest() : MockFlagsChannelOptsTest(ARES_FLAG_EDNS) {}
+};
+
+TEST_P(MockEDNSChannelTest, RetryWithoutEDNS) {
+ DNSPacket rspfail;
+ rspfail.set_response().set_aa().set_rcode(ns_r_formerr)
+ .add_question(new DNSQuestion("www.google.com", ns_t_a));
+ DNSPacket rspok;
+ rspok.set_response()
+ .add_question(new DNSQuestion("www.google.com", ns_t_a))
+ .add_answer(new DNSARR("www.google.com", 100, {1, 2, 3, 4}));
+ EXPECT_CALL(server_, OnRequest("www.google.com", ns_t_a))
+ .WillOnce(SetReply(&server_, &rspfail))
+ .WillOnce(SetReply(&server_, &rspok));
+ HostResult result;
+ ares_gethostbyname(channel_, "www.google.com.", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ std::stringstream ss;
+ ss << result.host_;
+ EXPECT_EQ("{'www.google.com' aliases=[] addrs=[1.2.3.4]}", ss.str());
+}
+
+TEST_P(MockChannelTest, SearchDomains) {
+ DNSPacket nofirst;
+ nofirst.set_response().set_aa().set_rcode(ns_r_nxdomain)
+ .add_question(new DNSQuestion("www.first.com", ns_t_a));
+ ON_CALL(server_, OnRequest("www.first.com", ns_t_a))
+ .WillByDefault(SetReply(&server_, &nofirst));
+ DNSPacket nosecond;
+ nosecond.set_response().set_aa().set_rcode(ns_r_nxdomain)
+ .add_question(new DNSQuestion("www.second.org", ns_t_a));
+ ON_CALL(server_, OnRequest("www.second.org", ns_t_a))
+ .WillByDefault(SetReply(&server_, &nosecond));
+ DNSPacket yesthird;
+ yesthird.set_response().set_aa()
+ .add_question(new DNSQuestion("www.third.gov", ns_t_a))
+ .add_answer(new DNSARR("www.third.gov", 0x0200, {2, 3, 4, 5}));
+ ON_CALL(server_, OnRequest("www.third.gov", ns_t_a))
+ .WillByDefault(SetReply(&server_, &yesthird));
+
+ HostResult result;
+ ares_gethostbyname(channel_, "www", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ std::stringstream ss;
+ ss << result.host_;
+ EXPECT_EQ("{'www.third.gov' aliases=[] addrs=[2.3.4.5]}", ss.str());
+}
+
+// Relies on retries so is UDP-only
+TEST_P(MockUDPChannelTest, SearchDomainsWithResentReply) {
+ DNSPacket nofirst;
+ nofirst.set_response().set_aa().set_rcode(ns_r_nxdomain)
+ .add_question(new DNSQuestion("www.first.com", ns_t_a));
+ EXPECT_CALL(server_, OnRequest("www.first.com", ns_t_a))
+ .WillOnce(SetReply(&server_, &nofirst));
+ DNSPacket nosecond;
+ nosecond.set_response().set_aa().set_rcode(ns_r_nxdomain)
+ .add_question(new DNSQuestion("www.second.org", ns_t_a));
+ EXPECT_CALL(server_, OnRequest("www.second.org", ns_t_a))
+ .WillOnce(SetReply(&server_, &nosecond));
+ DNSPacket yesthird;
+ yesthird.set_response().set_aa()
+ .add_question(new DNSQuestion("www.third.gov", ns_t_a))
+ .add_answer(new DNSARR("www.third.gov", 0x0200, {2, 3, 4, 5}));
+ // Before sending the real answer, resend an earlier reply
+ EXPECT_CALL(server_, OnRequest("www.third.gov", ns_t_a))
+ .WillOnce(DoAll(SetReply(&server_, &nofirst),
+ SetReplyQID(&server_, 123)))
+ .WillOnce(DoAll(SetReply(&server_, &yesthird),
+ SetReplyQID(&server_, -1)));
+
+ HostResult result;
+ ares_gethostbyname(channel_, "www", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ std::stringstream ss;
+ ss << result.host_;
+ EXPECT_EQ("{'www.third.gov' aliases=[] addrs=[2.3.4.5]}", ss.str());
+}
+
+TEST_P(MockChannelTest, SearchDomainsBare) {
+ DNSPacket nofirst;
+ nofirst.set_response().set_aa().set_rcode(ns_r_nxdomain)
+ .add_question(new DNSQuestion("www.first.com", ns_t_a));
+ ON_CALL(server_, OnRequest("www.first.com", ns_t_a))
+ .WillByDefault(SetReply(&server_, &nofirst));
+ DNSPacket nosecond;
+ nosecond.set_response().set_aa().set_rcode(ns_r_nxdomain)
+ .add_question(new DNSQuestion("www.second.org", ns_t_a));
+ ON_CALL(server_, OnRequest("www.second.org", ns_t_a))
+ .WillByDefault(SetReply(&server_, &nosecond));
+ DNSPacket nothird;
+ nothird.set_response().set_aa().set_rcode(ns_r_nxdomain)
+ .add_question(new DNSQuestion("www.third.gov", ns_t_a));
+ ON_CALL(server_, OnRequest("www.third.gov", ns_t_a))
+ .WillByDefault(SetReply(&server_, &nothird));
+ DNSPacket yesbare;
+ yesbare.set_response().set_aa()
+ .add_question(new DNSQuestion("www", ns_t_a))
+ .add_answer(new DNSARR("www", 0x0200, {2, 3, 4, 5}));
+ ON_CALL(server_, OnRequest("www", ns_t_a))
+ .WillByDefault(SetReply(&server_, &yesbare));
+
+ HostResult result;
+ ares_gethostbyname(channel_, "www", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ std::stringstream ss;
+ ss << result.host_;
+ EXPECT_EQ("{'www' aliases=[] addrs=[2.3.4.5]}", ss.str());
+}
+
+TEST_P(MockChannelTest, SearchNoDataThenSuccess) {
+ // First two search domains recognize the name but have no A records.
+ DNSPacket nofirst;
+ nofirst.set_response().set_aa()
+ .add_question(new DNSQuestion("www.first.com", ns_t_a));
+ ON_CALL(server_, OnRequest("www.first.com", ns_t_a))
+ .WillByDefault(SetReply(&server_, &nofirst));
+ DNSPacket nosecond;
+ nosecond.set_response().set_aa()
+ .add_question(new DNSQuestion("www.second.org", ns_t_a));
+ ON_CALL(server_, OnRequest("www.second.org", ns_t_a))
+ .WillByDefault(SetReply(&server_, &nosecond));
+ DNSPacket yesthird;
+ yesthird.set_response().set_aa()
+ .add_question(new DNSQuestion("www.third.gov", ns_t_a))
+ .add_answer(new DNSARR("www.third.gov", 0x0200, {2, 3, 4, 5}));
+ ON_CALL(server_, OnRequest("www.third.gov", ns_t_a))
+ .WillByDefault(SetReply(&server_, &yesthird));
+
+ HostResult result;
+ ares_gethostbyname(channel_, "www", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ std::stringstream ss;
+ ss << result.host_;
+ EXPECT_EQ("{'www.third.gov' aliases=[] addrs=[2.3.4.5]}", ss.str());
+}
+
+TEST_P(MockChannelTest, SearchNoDataThenNoDataBare) {
+ // First two search domains recognize the name but have no A records.
+ DNSPacket nofirst;
+ nofirst.set_response().set_aa()
+ .add_question(new DNSQuestion("www.first.com", ns_t_a));
+ ON_CALL(server_, OnRequest("www.first.com", ns_t_a))
+ .WillByDefault(SetReply(&server_, &nofirst));
+ DNSPacket nosecond;
+ nosecond.set_response().set_aa()
+ .add_question(new DNSQuestion("www.second.org", ns_t_a));
+ ON_CALL(server_, OnRequest("www.second.org", ns_t_a))
+ .WillByDefault(SetReply(&server_, &nosecond));
+ DNSPacket nothird;
+ nothird.set_response().set_aa()
+ .add_question(new DNSQuestion("www.third.gov", ns_t_a));
+ ON_CALL(server_, OnRequest("www.third.gov", ns_t_a))
+ .WillByDefault(SetReply(&server_, &nothird));
+ DNSPacket nobare;
+ nobare.set_response().set_aa()
+ .add_question(new DNSQuestion("www", ns_t_a));
+ ON_CALL(server_, OnRequest("www", ns_t_a))
+ .WillByDefault(SetReply(&server_, &nobare));
+
+ HostResult result;
+ ares_gethostbyname(channel_, "www", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ EXPECT_EQ(ARES_ENODATA, result.status_);
+}
+
+TEST_P(MockChannelTest, SearchNoDataThenFail) {
+ // First two search domains recognize the name but have no A records.
+ DNSPacket nofirst;
+ nofirst.set_response().set_aa()
+ .add_question(new DNSQuestion("www.first.com", ns_t_a));
+ ON_CALL(server_, OnRequest("www.first.com", ns_t_a))
+ .WillByDefault(SetReply(&server_, &nofirst));
+ DNSPacket nosecond;
+ nosecond.set_response().set_aa()
+ .add_question(new DNSQuestion("www.second.org", ns_t_a));
+ ON_CALL(server_, OnRequest("www.second.org", ns_t_a))
+ .WillByDefault(SetReply(&server_, &nosecond));
+ DNSPacket nothird;
+ nothird.set_response().set_aa()
+ .add_question(new DNSQuestion("www.third.gov", ns_t_a));
+ ON_CALL(server_, OnRequest("www.third.gov", ns_t_a))
+ .WillByDefault(SetReply(&server_, &nothird));
+ DNSPacket nobare;
+ nobare.set_response().set_aa().set_rcode(ns_r_nxdomain)
+ .add_question(new DNSQuestion("www", ns_t_a));
+ ON_CALL(server_, OnRequest("www", ns_t_a))
+ .WillByDefault(SetReply(&server_, &nobare));
+
+ HostResult result;
+ ares_gethostbyname(channel_, "www", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ EXPECT_EQ(ARES_ENODATA, result.status_);
+}
+
+TEST_P(MockChannelTest, SearchAllocFailure) {
+ SearchResult result;
+ SetAllocFail(1);
+ ares_search(channel_, "fully.qualified.", ns_c_in, ns_t_a, SearchCallback, &result);
+ /* Already done */
+ EXPECT_TRUE(result.done_);
+ EXPECT_EQ(ARES_ENOMEM, result.status_);
+}
+
+TEST_P(MockChannelTest, SearchHighNdots) {
+ DNSPacket nobare;
+ nobare.set_response().set_aa().set_rcode(ns_r_nxdomain)
+ .add_question(new DNSQuestion("a.b.c.w.w.w", ns_t_a));
+ ON_CALL(server_, OnRequest("a.b.c.w.w.w", ns_t_a))
+ .WillByDefault(SetReply(&server_, &nobare));
+ DNSPacket yesfirst;
+ yesfirst.set_response().set_aa()
+ .add_question(new DNSQuestion("a.b.c.w.w.w.first.com", ns_t_a))
+ .add_answer(new DNSARR("a.b.c.w.w.w.first.com", 0x0200, {2, 3, 4, 5}));
+ ON_CALL(server_, OnRequest("a.b.c.w.w.w.first.com", ns_t_a))
+ .WillByDefault(SetReply(&server_, &yesfirst));
+
+ SearchResult result;
+ ares_search(channel_, "a.b.c.w.w.w", ns_c_in, ns_t_a, SearchCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ EXPECT_EQ(ARES_SUCCESS, result.status_);
+ std::stringstream ss;
+ ss << PacketToString(result.data_);
+ EXPECT_EQ("RSP QRY AA NOERROR Q:{'a.b.c.w.w.w.first.com' IN A} "
+ "A:{'a.b.c.w.w.w.first.com' IN A TTL=512 2.3.4.5}",
+ ss.str());
+}
+
+TEST_P(MockChannelTest, UnspecifiedFamilyV6) {
+ DNSPacket rsp6;
+ rsp6.set_response().set_aa()
+ .add_question(new DNSQuestion("example.com", ns_t_aaaa))
+ .add_answer(new DNSAaaaRR("example.com", 100,
+ {0x21, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x03}));
+ ON_CALL(server_, OnRequest("example.com", ns_t_aaaa))
+ .WillByDefault(SetReply(&server_, &rsp6));
+
+ HostResult result;
+ ares_gethostbyname(channel_, "example.com.", AF_UNSPEC, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ std::stringstream ss;
+ ss << result.host_;
+ // Default to IPv6 when both are available.
+ EXPECT_EQ("{'example.com' aliases=[] addrs=[2121:0000:0000:0000:0000:0000:0000:0303]}", ss.str());
+}
+
+TEST_P(MockChannelTest, UnspecifiedFamilyV4) {
+ DNSPacket rsp6;
+ rsp6.set_response().set_aa()
+ .add_question(new DNSQuestion("example.com", ns_t_aaaa));
+ ON_CALL(server_, OnRequest("example.com", ns_t_aaaa))
+ .WillByDefault(SetReply(&server_, &rsp6));
+ DNSPacket rsp4;
+ rsp4.set_response().set_aa()
+ .add_question(new DNSQuestion("example.com", ns_t_a))
+ .add_answer(new DNSARR("example.com", 100, {2, 3, 4, 5}));
+ ON_CALL(server_, OnRequest("example.com", ns_t_a))
+ .WillByDefault(SetReply(&server_, &rsp4));
+
+ HostResult result;
+ ares_gethostbyname(channel_, "example.com.", AF_UNSPEC, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ std::stringstream ss;
+ ss << result.host_;
+ EXPECT_EQ("{'example.com' aliases=[] addrs=[2.3.4.5]}", ss.str());
+}
+
+TEST_P(MockChannelTest, UnspecifiedFamilyNoData) {
+ DNSPacket rsp6;
+ rsp6.set_response().set_aa()
+ .add_question(new DNSQuestion("example.com", ns_t_aaaa))
+ .add_answer(new DNSCnameRR("example.com", 100, "elsewhere.com"));
+ ON_CALL(server_, OnRequest("example.com", ns_t_aaaa))
+ .WillByDefault(SetReply(&server_, &rsp6));
+ DNSPacket rsp4;
+ rsp4.set_response().set_aa()
+ .add_question(new DNSQuestion("example.com", ns_t_a));
+ ON_CALL(server_, OnRequest("example.com", ns_t_a))
+ .WillByDefault(SetReply(&server_, &rsp4));
+
+ HostResult result;
+ ares_gethostbyname(channel_, "example.com.", AF_UNSPEC, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ std::stringstream ss;
+ ss << result.host_;
+ EXPECT_EQ("{'' aliases=[] addrs=[]}", ss.str());
+}
+
+TEST_P(MockChannelTest, UnspecifiedFamilyCname6A4) {
+ DNSPacket rsp6;
+ rsp6.set_response().set_aa()
+ .add_question(new DNSQuestion("example.com", ns_t_aaaa))
+ .add_answer(new DNSCnameRR("example.com", 100, "elsewhere.com"));
+ ON_CALL(server_, OnRequest("example.com", ns_t_aaaa))
+ .WillByDefault(SetReply(&server_, &rsp6));
+ DNSPacket rsp4;
+ rsp4.set_response().set_aa()
+ .add_question(new DNSQuestion("example.com", ns_t_a))
+ .add_answer(new DNSARR("example.com", 100, {1, 2, 3, 4}));
+ ON_CALL(server_, OnRequest("example.com", ns_t_a))
+ .WillByDefault(SetReply(&server_, &rsp4));
+
+ HostResult result;
+ ares_gethostbyname(channel_, "example.com.", AF_UNSPEC, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ std::stringstream ss;
+ ss << result.host_;
+ EXPECT_EQ("{'example.com' aliases=[] addrs=[1.2.3.4]}", ss.str());
+}
+
+TEST_P(MockChannelTest, ExplicitIP) {
+ HostResult result;
+ ares_gethostbyname(channel_, "1.2.3.4", AF_INET, HostCallback, &result);
+ EXPECT_TRUE(result.done_); // Immediate return
+ EXPECT_EQ(ARES_SUCCESS, result.status_);
+ std::stringstream ss;
+ ss << result.host_;
+ EXPECT_EQ("{'1.2.3.4' aliases=[] addrs=[1.2.3.4]}", ss.str());
+}
+
+TEST_P(MockChannelTest, ExplicitIPAllocFail) {
+ HostResult result;
+ SetAllocSizeFail(strlen("1.2.3.4") + 1);
+ ares_gethostbyname(channel_, "1.2.3.4", AF_INET, HostCallback, &result);
+ EXPECT_TRUE(result.done_); // Immediate return
+ EXPECT_EQ(ARES_ENOMEM, result.status_);
+}
+
+TEST_P(MockChannelTest, SortListV4) {
+ DNSPacket rsp;
+ rsp.set_response().set_aa()
+ .add_question(new DNSQuestion("example.com", ns_t_a))
+ .add_answer(new DNSARR("example.com", 100, {22, 23, 24, 25}))
+ .add_answer(new DNSARR("example.com", 100, {12, 13, 14, 15}))
+ .add_answer(new DNSARR("example.com", 100, {2, 3, 4, 5}));
+ ON_CALL(server_, OnRequest("example.com", ns_t_a))
+ .WillByDefault(SetReply(&server_, &rsp));
+
+ {
+ EXPECT_EQ(ARES_SUCCESS, ares_set_sortlist(channel_, "12.13.0.0/255.255.0.0 1234::5678"));
+ HostResult result;
+ ares_gethostbyname(channel_, "example.com.", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ std::stringstream ss;
+ ss << result.host_;
+ EXPECT_EQ("{'example.com' aliases=[] addrs=[12.13.14.15, 22.23.24.25, 2.3.4.5]}", ss.str());
+ }
+ {
+ EXPECT_EQ(ARES_SUCCESS, ares_set_sortlist(channel_, "2.3.0.0/16 130.140.150.160/26"));
+ HostResult result;
+ ares_gethostbyname(channel_, "example.com.", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ std::stringstream ss;
+ ss << result.host_;
+ EXPECT_EQ("{'example.com' aliases=[] addrs=[2.3.4.5, 22.23.24.25, 12.13.14.15]}", ss.str());
+ }
+ struct ares_options options;
+ memset(&options, 0, sizeof(options));
+ int optmask = 0;
+ EXPECT_EQ(ARES_SUCCESS, ares_save_options(channel_, &options, &optmask));
+ EXPECT_TRUE((optmask & ARES_OPT_SORTLIST) == ARES_OPT_SORTLIST);
+ ares_destroy_options(&options);
+}
+
+TEST_P(MockChannelTest, SortListV6) {
+ DNSPacket rsp;
+ rsp.set_response().set_aa()
+ .add_question(new DNSQuestion("example.com", ns_t_aaaa))
+ .add_answer(new DNSAaaaRR("example.com", 100,
+ {0x11, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x02}))
+ .add_answer(new DNSAaaaRR("example.com", 100,
+ {0x21, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x03}));
+ ON_CALL(server_, OnRequest("example.com", ns_t_aaaa))
+ .WillByDefault(SetReply(&server_, &rsp));
+
+ {
+ ares_set_sortlist(channel_, "1111::/16 2.3.0.0/255.255.0.0");
+ HostResult result;
+ ares_gethostbyname(channel_, "example.com.", AF_INET6, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ std::stringstream ss;
+ ss << result.host_;
+ EXPECT_EQ("{'example.com' aliases=[] addrs=[1111:0000:0000:0000:0000:0000:0000:0202, "
+ "2121:0000:0000:0000:0000:0000:0000:0303]}", ss.str());
+ }
+ {
+ ares_set_sortlist(channel_, "2121::/8");
+ HostResult result;
+ ares_gethostbyname(channel_, "example.com.", AF_INET6, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ std::stringstream ss;
+ ss << result.host_;
+ EXPECT_EQ("{'example.com' aliases=[] addrs=[2121:0000:0000:0000:0000:0000:0000:0303, "
+ "1111:0000:0000:0000:0000:0000:0000:0202]}", ss.str());
+ }
+}
+
+// Relies on retries so is UDP-only
+TEST_P(MockUDPChannelTest, SearchDomainsAllocFail) {
+ DNSPacket nofirst;
+ nofirst.set_response().set_aa().set_rcode(ns_r_nxdomain)
+ .add_question(new DNSQuestion("www.first.com", ns_t_a));
+ ON_CALL(server_, OnRequest("www.first.com", ns_t_a))
+ .WillByDefault(SetReply(&server_, &nofirst));
+ DNSPacket nosecond;
+ nosecond.set_response().set_aa().set_rcode(ns_r_nxdomain)
+ .add_question(new DNSQuestion("www.second.org", ns_t_a));
+ ON_CALL(server_, OnRequest("www.second.org", ns_t_a))
+ .WillByDefault(SetReply(&server_, &nosecond));
+ DNSPacket yesthird;
+ yesthird.set_response().set_aa()
+ .add_question(new DNSQuestion("www.third.gov", ns_t_a))
+ .add_answer(new DNSARR("www.third.gov", 0x0200, {2, 3, 4, 5}));
+ ON_CALL(server_, OnRequest("www.third.gov", ns_t_a))
+ .WillByDefault(SetReply(&server_, &yesthird));
+
+ // Fail a variety of different memory allocations, and confirm
+ // that the operation either fails with ENOMEM or succeeds
+ // with the expected result.
+ const int kCount = 34;
+ HostResult results[kCount];
+ for (int ii = 1; ii <= kCount; ii++) {
+ HostResult* result = &(results[ii - 1]);
+ ClearFails();
+ SetAllocFail(ii);
+ ares_gethostbyname(channel_, "www", AF_INET, HostCallback, result);
+ Process();
+ EXPECT_TRUE(result->done_);
+ if (result->status_ == ARES_SUCCESS) {
+ std::stringstream ss;
+ ss << result->host_;
+ EXPECT_EQ("{'www.third.gov' aliases=[] addrs=[2.3.4.5]}", ss.str()) << " failed alloc #" << ii;
+ if (verbose) std::cerr << "Succeeded despite failure of alloc #" << ii << std::endl;
+ }
+ }
+
+ // Explicitly destroy the channel now, so that the HostResult objects
+ // are still valid (in case any pending work refers to them).
+ ares_destroy(channel_);
+ channel_ = nullptr;
+}
+
+// Relies on retries so is UDP-only
+TEST_P(MockUDPChannelTest, Resend) {
+ std::vector<byte> nothing;
+ DNSPacket reply;
+ reply.set_response().set_aa()
+ .add_question(new DNSQuestion("www.google.com", ns_t_a))
+ .add_answer(new DNSARR("www.google.com", 0x0100, {0x01, 0x02, 0x03, 0x04}));
+
+ EXPECT_CALL(server_, OnRequest("www.google.com", ns_t_a))
+ .WillOnce(SetReplyData(&server_, nothing))
+ .WillOnce(SetReplyData(&server_, nothing))
+ .WillOnce(SetReply(&server_, &reply));
+
+ HostResult result;
+ ares_gethostbyname(channel_, "www.google.com.", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ EXPECT_EQ(2, result.timeouts_);
+ std::stringstream ss;
+ ss << result.host_;
+ EXPECT_EQ("{'www.google.com' aliases=[] addrs=[1.2.3.4]}", ss.str());
+}
+
+TEST_P(MockChannelTest, CancelImmediate) {
+ HostResult result;
+ ares_gethostbyname(channel_, "www.google.com.", AF_INET, HostCallback, &result);
+ ares_cancel(channel_);
+ EXPECT_TRUE(result.done_);
+ EXPECT_EQ(ARES_ECANCELLED, result.status_);
+ EXPECT_EQ(0, result.timeouts_);
+}
+
+TEST_P(MockChannelTest, CancelImmediateGetHostByAddr) {
+ HostResult result;
+ struct in_addr addr;
+ addr.s_addr = htonl(0x08080808);
+
+ ares_gethostbyaddr(channel_, &addr, sizeof(addr), AF_INET, HostCallback, &result);
+ ares_cancel(channel_);
+ EXPECT_TRUE(result.done_);
+ EXPECT_EQ(ARES_ECANCELLED, result.status_);
+ EXPECT_EQ(0, result.timeouts_);
+}
+
+// Relies on retries so is UDP-only
+TEST_P(MockUDPChannelTest, CancelLater) {
+ std::vector<byte> nothing;
+
+ // On second request, cancel the channel.
+ EXPECT_CALL(server_, OnRequest("www.google.com", ns_t_a))
+ .WillOnce(SetReplyData(&server_, nothing))
+ .WillOnce(CancelChannel(&server_, channel_));
+
+ HostResult result;
+ ares_gethostbyname(channel_, "www.google.com.", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ EXPECT_EQ(ARES_ECANCELLED, result.status_);
+ EXPECT_EQ(0, result.timeouts_);
+}
+
+TEST_P(MockChannelTest, GetHostByNameDestroyAbsolute) {
+ HostResult result;
+ ares_gethostbyname(channel_, "www.google.com.", AF_INET, HostCallback, &result);
+
+ ares_destroy(channel_);
+ channel_ = nullptr;
+
+ EXPECT_TRUE(result.done_); // Synchronous
+ EXPECT_EQ(ARES_EDESTRUCTION, result.status_);
+ EXPECT_EQ(0, result.timeouts_);
+}
+
+TEST_P(MockChannelTest, GetHostByNameDestroyRelative) {
+ HostResult result;
+ ares_gethostbyname(channel_, "www", AF_INET, HostCallback, &result);
+
+ ares_destroy(channel_);
+ channel_ = nullptr;
+
+ EXPECT_TRUE(result.done_); // Synchronous
+ EXPECT_EQ(ARES_EDESTRUCTION, result.status_);
+ EXPECT_EQ(0, result.timeouts_);
+}
+
+TEST_P(MockChannelTest, GetHostByNameCNAMENoData) {
+ DNSPacket response;
+ response.set_response().set_aa()
+ .add_question(new DNSQuestion("cname.first.com", ns_t_a))
+ .add_answer(new DNSCnameRR("cname.first.com", 100, "a.first.com"));
+ ON_CALL(server_, OnRequest("cname.first.com", ns_t_a))
+ .WillByDefault(SetReply(&server_, &response));
+
+ HostResult result;
+ ares_gethostbyname(channel_, "cname.first.com", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ EXPECT_EQ(ARES_ENODATA, result.status_);
+}
+
+TEST_P(MockChannelTest, GetHostByAddrDestroy) {
+ unsigned char gdns_addr4[4] = {0x08, 0x08, 0x08, 0x08};
+ HostResult result;
+ ares_gethostbyaddr(channel_, gdns_addr4, sizeof(gdns_addr4), AF_INET, HostCallback, &result);
+
+ ares_destroy(channel_);
+ channel_ = nullptr;
+
+ EXPECT_TRUE(result.done_); // Synchronous
+ EXPECT_EQ(ARES_EDESTRUCTION, result.status_);
+ EXPECT_EQ(0, result.timeouts_);
+}
+
+#ifndef WIN32
+TEST_P(MockChannelTest, HostAlias) {
+ DNSPacket reply;
+ reply.set_response().set_aa()
+ .add_question(new DNSQuestion("www.google.com", ns_t_a))
+ .add_answer(new DNSARR("www.google.com", 0x0100, {0x01, 0x02, 0x03, 0x04}));
+ ON_CALL(server_, OnRequest("www.google.com", ns_t_a))
+ .WillByDefault(SetReply(&server_, &reply));
+
+ TempFile aliases("\n\n# www commentedout\nwww www.google.com\n");
+ EnvValue with_env("HOSTALIASES", aliases.filename());
+
+ HostResult result;
+ ares_gethostbyname(channel_, "www", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ std::stringstream ss;
+ ss << result.host_;
+ EXPECT_EQ("{'www.google.com' aliases=[] addrs=[1.2.3.4]}", ss.str());
+}
+
+TEST_P(MockChannelTest, HostAliasMissing) {
+ DNSPacket yesfirst;
+ yesfirst.set_response().set_aa()
+ .add_question(new DNSQuestion("www.first.com", ns_t_a))
+ .add_answer(new DNSARR("www.first.com", 0x0200, {2, 3, 4, 5}));
+ ON_CALL(server_, OnRequest("www.first.com", ns_t_a))
+ .WillByDefault(SetReply(&server_, &yesfirst));
+
+ TempFile aliases("\n\n# www commentedout\nww www.google.com\n");
+ EnvValue with_env("HOSTALIASES", aliases.filename());
+ HostResult result;
+ ares_gethostbyname(channel_, "www", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ std::stringstream ss;
+ ss << result.host_;
+ EXPECT_EQ("{'www.first.com' aliases=[] addrs=[2.3.4.5]}", ss.str());
+}
+
+TEST_P(MockChannelTest, HostAliasMissingFile) {
+ DNSPacket yesfirst;
+ yesfirst.set_response().set_aa()
+ .add_question(new DNSQuestion("www.first.com", ns_t_a))
+ .add_answer(new DNSARR("www.first.com", 0x0200, {2, 3, 4, 5}));
+ ON_CALL(server_, OnRequest("www.first.com", ns_t_a))
+ .WillByDefault(SetReply(&server_, &yesfirst));
+
+ EnvValue with_env("HOSTALIASES", "bogus.mcfile");
+ HostResult result;
+ ares_gethostbyname(channel_, "www", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ std::stringstream ss;
+ ss << result.host_;
+ EXPECT_EQ("{'www.first.com' aliases=[] addrs=[2.3.4.5]}", ss.str());
+}
+
+TEST_P(MockChannelTest, HostAliasUnreadable) {
+ TempFile aliases("www www.google.com\n");
+ chmod(aliases.filename(), 0);
+ EnvValue with_env("HOSTALIASES", aliases.filename());
+
+ HostResult result;
+ ares_gethostbyname(channel_, "www", AF_INET, HostCallback, &result);
+ EXPECT_TRUE(result.done_);
+ EXPECT_EQ(ARES_EFILE, result.status_);
+ chmod(aliases.filename(), 0777);
+}
+#endif
+
+class MockMultiServerChannelTest
+ : public MockChannelOptsTest,
+ public ::testing::WithParamInterface< std::pair<int, bool> > {
+ public:
+ MockMultiServerChannelTest(bool rotate)
+ : MockChannelOptsTest(3, GetParam().first, GetParam().second, nullptr, rotate ? ARES_OPT_ROTATE : ARES_OPT_NOROTATE) {}
+ void CheckExample() {
+ HostResult result;
+ ares_gethostbyname(channel_, "www.example.com.", AF_INET, HostCallback, &result);
+ Process();
+ EXPECT_TRUE(result.done_);
+ std::stringstream ss;
+ ss << result.host_;
+ EXPECT_EQ("{'www.example.com' aliases=[] addrs=[2.3.4.5]}", ss.str());
+ }
+};
+
+class RotateMultiMockTest : public MockMultiServerChannelTest {
+ public:
+ RotateMultiMockTest() : MockMultiServerChannelTest(true) {}
+};
+
+class NoRotateMultiMockTest : public MockMultiServerChannelTest {
+ public:
+ NoRotateMultiMockTest() : MockMultiServerChannelTest(false) {}
+};
+
+
+TEST_P(RotateMultiMockTest, ThirdServer) {
+ struct ares_options opts = {0};
+ int optmask = 0;
+ EXPECT_EQ(ARES_SUCCESS, ares_save_options(channel_, &opts, &optmask));
+ EXPECT_EQ(0, (optmask & ARES_OPT_NOROTATE));
+ ares_destroy_options(&opts);
+
+ DNSPacket servfailrsp;
+ servfailrsp.set_response().set_aa().set_rcode(ns_r_servfail)
+ .add_question(new DNSQuestion("www.example.com", ns_t_a));
+ DNSPacket notimplrsp;
+ notimplrsp.set_response().set_aa().set_rcode(ns_r_notimpl)
+ .add_question(new DNSQuestion("www.example.com", ns_t_a));
+ DNSPacket okrsp;
+ okrsp.set_response().set_aa()
+ .add_question(new DNSQuestion("www.example.com", ns_t_a))
+ .add_answer(new DNSARR("www.example.com", 100, {2,3,4,5}));
+
+ EXPECT_CALL(*servers_[0], OnRequest("www.example.com", ns_t_a))
+ .WillOnce(SetReply(servers_[0].get(), &servfailrsp));
+ EXPECT_CALL(*servers_[1], OnRequest("www.example.com", ns_t_a))
+ .WillOnce(SetReply(servers_[1].get(), &notimplrsp));
+ EXPECT_CALL(*servers_[2], OnRequest("www.example.com", ns_t_a))
+ .WillOnce(SetReply(servers_[2].get(), &okrsp));
+ CheckExample();
+
+ // Second time around, starts from server [1].
+ EXPECT_CALL(*servers_[1], OnRequest("www.example.com", ns_t_a))
+ .WillOnce(SetReply(servers_[1].get(), &servfailrsp));
+ EXPECT_CALL(*servers_[2], OnRequest("www.example.com", ns_t_a))
+ .WillOnce(SetReply(servers_[2].get(), &notimplrsp));
+ EXPECT_CALL(*servers_[0], OnRequest("www.example.com", ns_t_a))
+ .WillOnce(SetReply(servers_[0].get(), &okrsp));
+ CheckExample();
+
+ // Third time around, starts from server [2].
+ EXPECT_CALL(*servers_[2], OnRequest("www.example.com", ns_t_a))
+ .WillOnce(SetReply(servers_[2].get(), &servfailrsp));
+ EXPECT_CALL(*servers_[0], OnRequest("www.example.com", ns_t_a))
+ .WillOnce(SetReply(servers_[0].get(), &notimplrsp));
+ EXPECT_CALL(*servers_[1], OnRequest("www.example.com", ns_t_a))
+ .WillOnce(SetReply(servers_[1].get(), &okrsp));
+ CheckExample();
+}
+
+TEST_P(NoRotateMultiMockTest, ThirdServer) {
+ struct ares_options opts = {0};
+ int optmask = 0;
+ EXPECT_EQ(ARES_SUCCESS, ares_save_options(channel_, &opts, &optmask));
+ EXPECT_EQ(ARES_OPT_NOROTATE, (optmask & ARES_OPT_NOROTATE));
+ ares_destroy_options(&opts);
+
+ DNSPacket servfailrsp;
+ servfailrsp.set_response().set_aa().set_rcode(ns_r_servfail)
+ .add_question(new DNSQuestion("www.example.com", ns_t_a));
+ DNSPacket notimplrsp;
+ notimplrsp.set_response().set_aa().set_rcode(ns_r_notimpl)
+ .add_question(new DNSQuestion("www.example.com", ns_t_a));
+ DNSPacket okrsp;
+ okrsp.set_response().set_aa()
+ .add_question(new DNSQuestion("www.example.com", ns_t_a))
+ .add_answer(new DNSARR("www.example.com", 100, {2,3,4,5}));
+
+ EXPECT_CALL(*servers_[0], OnRequest("www.example.com", ns_t_a))
+ .WillOnce(SetReply(servers_[0].get(), &servfailrsp));
+ EXPECT_CALL(*servers_[1], OnRequest("www.example.com", ns_t_a))
+ .WillOnce(SetReply(servers_[1].get(), &notimplrsp));
+ EXPECT_CALL(*servers_[2], OnRequest("www.example.com", ns_t_a))
+ .WillOnce(SetReply(servers_[2].get(), &okrsp));
+ CheckExample();
+
+ // Second time around, still starts from server [0].
+ EXPECT_CALL(*servers_[0], OnRequest("www.example.com", ns_t_a))
+ .WillOnce(SetReply(servers_[0].get(), &servfailrsp));
+ EXPECT_CALL(*servers_[1], OnRequest("www.example.com", ns_t_a))
+ .WillOnce(SetReply(servers_[1].get(), &notimplrsp));
+ EXPECT_CALL(*servers_[2], OnRequest("www.example.com", ns_t_a))
+ .WillOnce(SetReply(servers_[2].get(), &okrsp));
+ CheckExample();
+
+ // Third time around, still starts from server [0].
+ EXPECT_CALL(*servers_[0], OnRequest("www.example.com", ns_t_a))
+ .WillOnce(SetReply(servers_[0].get(), &servfailrsp));
+ EXPECT_CALL(*servers_[1], OnRequest("www.example.com", ns_t_a))
+ .WillOnce(SetReply(servers_[1].get(), &notimplrsp));
+ EXPECT_CALL(*servers_[2], OnRequest("www.example.com", ns_t_a))
+ .WillOnce(SetReply(servers_[2].get(), &okrsp));
+ CheckExample();
+}
+
+INSTANTIATE_TEST_CASE_P(AddressFamilies, MockChannelTest, ::testing::ValuesIn(ares::test::families_modes));
+
+INSTANTIATE_TEST_CASE_P(AddressFamilies, MockUDPChannelTest, ::testing::ValuesIn(ares::test::families));
+
+INSTANTIATE_TEST_CASE_P(AddressFamilies, MockTCPChannelTest, ::testing::ValuesIn(ares::test::families));
+
+INSTANTIATE_TEST_CASE_P(AddressFamilies, MockExtraOptsTest, ::testing::ValuesIn(ares::test::families_modes));
+
+INSTANTIATE_TEST_CASE_P(AddressFamilies, MockNoCheckRespChannelTest, ::testing::ValuesIn(ares::test::families_modes));
+
+INSTANTIATE_TEST_CASE_P(AddressFamilies, MockEDNSChannelTest, ::testing::ValuesIn(ares::test::families_modes));
+
+INSTANTIATE_TEST_CASE_P(TransportModes, RotateMultiMockTest, ::testing::ValuesIn(ares::test::families_modes));
+
+INSTANTIATE_TEST_CASE_P(TransportModes, NoRotateMultiMockTest, ::testing::ValuesIn(ares::test::families_modes));
+
+} // namespace test
+} // namespace ares
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-25 13:23:32 +0000