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Test for asynchronous DNS query API

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Add basic test for asynchronous DNS query API

Test: build
      atest CtsNativeNetDnsTestCases

Change-Id: Ib757ba8f0128d3efe7dfbcbfb45d36e4350834f9
This commit is contained in:
Luke Huang
2018-11-21 14:38:40 +08:00
parent 5a6e995881
commit 3c5f35a38e
3 changed files with 213 additions and 0 deletions
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36
tests/cts/net/native/dns_async/Android.bp Normal file
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cc_defaults {
name: "dns_async_defaults",
cflags: [
"-fstack-protector-all",
"-g",
"-Wall",
"-Wextra",
"-Werror",
"-fno-builtin",
],
srcs: [
"src/NativeDnsAsyncTest.cpp",
],
shared_libs: [
"liblog",
"libutils",
"libandroid",
],
}
cc_test {
name: "CtsNativeNetDnsTestCases",
defaults: ["dns_async_defaults"],
multilib: {
lib32: {
suffix: "32",
},
lib64: {
suffix: "64",
},
},
test_suites: [
"cts",
],
}

29
tests/cts/net/native/dns_async/AndroidTest.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2018 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<configuration description="Config for CTS Native Network dns_async test cases">
<option name="test-suite-tag" value="cts" />
<option name="config-descriptor:metadata" key="component" value="networking" />
<target_preparer class="com.android.compatibility.common.tradefed.targetprep.FilePusher">
<option name="cleanup" value="true" />
<option name="push" value="CtsNativeNetDnsTestCases->/data/local/tmp/CtsNativeNetDnsTestCases" />
<option name="append-bitness" value="true" />
</target_preparer>
<test class="com.android.tradefed.testtype.GTest" >
<option name="native-test-device-path" value="/data/local/tmp" />
<option name="module-name" value="CtsNativeNetDnsTestCases" />
<option name="runtime-hint" value="1m" />
</test>
</configuration>

148
tests/cts/net/native/dns_async/src/NativeDnsAsyncTest.cpp Normal file
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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <arpa/inet.h>
#include <arpa/nameser.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <error.h>
#include <errno.h>
#include <fcntl.h>
#include <inttypes.h>
#include <poll.h> /* poll */
#include <resolv.h>
#include <string.h>
#include <android/multinetwork.h>
#include <gtest/gtest.h>
namespace {
constexpr int MAXPACKET = 8 * 1024;
constexpr int PTON_MAX = 16;
int getAsyncResponse(int fd, int timeoutMs, int* rcode, u_char* buf, int bufLen) {
struct pollfd wait_fd[1];
wait_fd[0].fd = fd;
wait_fd[0].events = POLLIN;
short revents;
int ret;
ret = poll(wait_fd, 1, timeoutMs);
revents = wait_fd[0].revents;
if (revents & POLLIN) {
int n = android_res_nresult(fd, rcode, buf, bufLen);
return n;
}
return -1;
}
std::vector<std::string> extractIpAddressAnswers(u_char* buf, int bufLen, int ipType) {
ns_msg handle;
if (ns_initparse((const uint8_t*) buf, bufLen, &handle) < 0) {
return {};
}
int ancount = ns_msg_count(handle, ns_s_an);
ns_rr rr;
std::vector<std::string> answers;
for (int i = 0; i < ancount; i++) {
if (ns_parserr(&handle, ns_s_an, i, &rr) < 0) {
continue;
}
const u_char* rdata = ns_rr_rdata(rr);
char buffer[INET6_ADDRSTRLEN];
if (inet_ntop(ipType, (const char*) rdata, buffer, sizeof(buffer))) {
answers.push_back(buffer);
}
}
return answers;
}
void expectAnswersValid(int fd, int ipType, int expectedRcode) {
int rcode = -1;
u_char buf[MAXPACKET] = {};
int res = getAsyncResponse(fd, 10000, &rcode, buf, MAXPACKET);
EXPECT_GT(res, 0);
EXPECT_EQ(rcode, expectedRcode);
if (expectedRcode == NOERROR) {
auto answers = extractIpAddressAnswers(buf, res, ipType);
EXPECT_GT(answers.size(), 0U);
for (auto &answer : answers) {
char pton[PTON_MAX];
EXPECT_EQ(1, inet_pton(ipType, answer.c_str(), pton));
}
}
}
} // namespace
TEST (NativeDnsAsyncTest, Async_Query) {
// V4
int fd = android_res_nquery(NETWORK_UNSPECIFIED ,"www.google.com", ns_c_in, ns_t_a);
EXPECT_GT(fd, 0);
expectAnswersValid(fd, AF_INET, NOERROR);
// V6
fd = android_res_nquery(NETWORK_UNSPECIFIED ,"www.google.com", ns_c_in, ns_t_aaaa);
EXPECT_GT(fd, 0);
expectAnswersValid(fd, AF_INET6, NOERROR);
}
TEST (NativeDnsAsyncTest, Async_Send) {
// V4
u_char buf[MAXPACKET] = {};
int len = res_mkquery(QUERY, "www.youtube.com",
ns_c_in, ns_t_a, nullptr, 0, nullptr, buf, sizeof(buf));
EXPECT_GT(len, 0);
int fd = android_res_nsend(NETWORK_UNSPECIFIED , buf, len);
EXPECT_GT(fd, 0);
expectAnswersValid(fd, AF_INET, NOERROR);
// V6
memset(buf, 0, MAXPACKET);
len = res_mkquery(QUERY, "www.youtube.com",
ns_c_in, ns_t_aaaa, nullptr, 0, nullptr, buf, sizeof(buf));
EXPECT_GT(len, 0);
fd = android_res_nsend(NETWORK_UNSPECIFIED , buf, len);
EXPECT_GT(fd, 0);
expectAnswersValid(fd, AF_INET6, NOERROR);
}
TEST (NativeDnsAsyncTest, Async_NXDOMAIN) {
u_char buf[MAXPACKET] = {};
int len = res_mkquery(QUERY, "test-nx.metric.gstatic.com",
ns_c_in, ns_t_a, nullptr, 0, nullptr, buf, sizeof(buf));
EXPECT_GT(len, 0);
int fd = android_res_nsend(NETWORK_UNSPECIFIED , buf, len);
EXPECT_GT(fd, 0);
expectAnswersValid(fd, AF_INET, NXDOMAIN);
}
TEST (NativeDnsAsyncTest, Async_Cancel) {
int fd = android_res_nquery(NETWORK_UNSPECIFIED ,"www.google.com", ns_c_in, ns_t_a);
int rcode = -1;
u_char buf[MAXPACKET] = {};
android_res_cancel(fd);
int res = android_res_nresult(fd, &rcode, buf, MAXPACKET);
EXPECT_EQ(res, -EBADF);
}
int main(int argc, char **argv) {
testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}