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/*
* Copyright (C) 2020 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 <netdb.h>
#include <netinet/in.h>
#include <poll.h> /* poll */
#include <sys/socket.h>
#include <sys/types.h>
#include <android-base/unique_fd.h>
#include <gtest/gtest.h>
#include "NetdClient.h"
#define SKIP_IF_NO_NETWORK_CONNECTIVITY \
do { \
if (!checkNetworkConnectivity()) GTEST_SKIP() << "Skip. Requires Network Connectivity."; \
} while (0)
namespace {
constexpr char TEST_DOMAIN[] = "www.google.com";
bool checkNetworkConnectivity() {
android::base::unique_fd sock(socket(AF_INET6, SOCK_DGRAM | SOCK_CLOEXEC, IPPROTO_UDP));
if (sock == -1) return false;
static const sockaddr_in6 server6 = {
.sin6_family = AF_INET6,
.sin6_addr.s6_addr = {// 2000::
0x20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}};
int ret = connect(sock, reinterpret_cast<const sockaddr*>(&server6), sizeof(server6));
if (ret == 0) return true;
sock.reset(socket(AF_INET, SOCK_DGRAM | SOCK_CLOEXEC, IPPROTO_UDP));
if (sock == -1) return false;
static const sockaddr_in server4 = {
.sin_family = AF_INET,
.sin_addr.s_addr = __constant_htonl(0x08080808L) // 8.8.8.8
};
ret = connect(sock, reinterpret_cast<const sockaddr*>(&server4), sizeof(server4));
return !ret;
}
void expectHasNetworking() {
// Socket
android::base::unique_fd ipv4(socket(AF_INET, SOCK_STREAM | SOCK_CLOEXEC, 0)),
ipv6(socket(AF_INET6, SOCK_STREAM | SOCK_CLOEXEC, 0));
EXPECT_LE(3, ipv4);
EXPECT_LE(3, ipv6);
// DNS
addrinfo* result = nullptr;
errno = 0;
const addrinfo hints = {
.ai_family = AF_UNSPEC,
.ai_socktype = SOCK_DGRAM,
};
EXPECT_EQ(0, getaddrinfo(TEST_DOMAIN, nullptr, &hints, &result));
EXPECT_EQ(0, errno);
freeaddrinfo(result);
}
void expectNoNetworking() {
// Socket
android::base::unique_fd unixSocket(socket(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0));
EXPECT_LE(3, unixSocket);
android::base::unique_fd ipv4(socket(AF_INET, SOCK_STREAM | SOCK_CLOEXEC, 0));
EXPECT_EQ(-1, ipv4);
EXPECT_EQ(EPERM, errno);
android::base::unique_fd ipv6(socket(AF_INET6, SOCK_STREAM | SOCK_CLOEXEC, 0));
EXPECT_EQ(-1, ipv6);
EXPECT_EQ(EPERM, errno);
// DNS
addrinfo* result = nullptr;
errno = 0;
const addrinfo hints = {
.ai_family = AF_UNSPEC,
.ai_socktype = SOCK_DGRAM,
};
EXPECT_EQ(EAI_NODATA, getaddrinfo(TEST_DOMAIN, nullptr, &hints, &result));
EXPECT_EQ(EPERM, errno);
freeaddrinfo(result);
}
} // namespace
TEST(NetdClientIntegrationTest, setAllowNetworkingForProcess) {
SKIP_IF_NO_NETWORK_CONNECTIVITY;
// At the beginning, we should be able to use socket since the default setting is allowing.
expectHasNetworking();
// Disable
setAllowNetworkingForProcess(false);
expectNoNetworking();
// Reset
setAllowNetworkingForProcess(true);
expectHasNetworking();
}
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