| /* |
| * Copyright (C) 2011 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. |
| */ |
| |
| package libcore.io; |
| |
| import android.system.ErrnoException; |
| import android.system.NetlinkSocketAddress; |
| import android.system.OsConstants; |
| import android.system.PacketSocketAddress; |
| import android.system.StructTimeval; |
| import android.system.StructUcred; |
| import java.io.File; |
| import java.io.FileDescriptor; |
| import java.io.FileInputStream; |
| import java.io.FileOutputStream; |
| import java.net.Inet4Address; |
| import java.net.Inet6Address; |
| import java.net.InetAddress; |
| import java.net.InetSocketAddress; |
| import java.net.InetUnixAddress; |
| import java.net.NetworkInterface; |
| import java.net.ServerSocket; |
| import java.net.SocketAddress; |
| import java.nio.ByteBuffer; |
| import java.nio.charset.StandardCharsets; |
| import java.util.Arrays; |
| import java.util.Locale; |
| import junit.framework.TestCase; |
| import static android.system.OsConstants.*; |
| |
| public class OsTest extends TestCase { |
| public void testIsSocket() throws Exception { |
| File f = new File("/dev/null"); |
| FileInputStream fis = new FileInputStream(f); |
| assertFalse(S_ISSOCK(Libcore.os.fstat(fis.getFD()).st_mode)); |
| fis.close(); |
| |
| ServerSocket s = new ServerSocket(); |
| assertTrue(S_ISSOCK(Libcore.os.fstat(s.getImpl$().getFD$()).st_mode)); |
| s.close(); |
| } |
| |
| public void testFcntlInt() throws Exception { |
| File f = File.createTempFile("OsTest", "tst"); |
| FileInputStream fis = null; |
| try { |
| fis = new FileInputStream(f); |
| Libcore.os.fcntlInt(fis.getFD(), F_SETFD, FD_CLOEXEC); |
| int flags = Libcore.os.fcntlVoid(fis.getFD(), F_GETFD); |
| assertTrue((flags & FD_CLOEXEC) != 0); |
| } finally { |
| IoUtils.closeQuietly(fis); |
| f.delete(); |
| } |
| } |
| |
| public void testUnixDomainSockets_in_file_system() throws Exception { |
| String path = System.getProperty("java.io.tmpdir") + "/test_unix_socket"; |
| new File(path).delete(); |
| checkUnixDomainSocket(new InetUnixAddress(path), false); |
| } |
| |
| public void testUnixDomainSocket_abstract_name() throws Exception { |
| // Linux treats a sun_path starting with a NUL byte as an abstract name. See unix(7). |
| byte[] path = "/abstract_name_unix_socket".getBytes("UTF-8"); |
| path[0] = 0; |
| checkUnixDomainSocket(new InetUnixAddress(path), true); |
| } |
| |
| private void checkUnixDomainSocket(final InetUnixAddress address, final boolean isAbstract) throws Exception { |
| final FileDescriptor serverFd = Libcore.os.socket(AF_UNIX, SOCK_STREAM, 0); |
| Libcore.os.bind(serverFd, address, 0); |
| Libcore.os.listen(serverFd, 5); |
| |
| checkSockName(serverFd, isAbstract, address); |
| |
| Thread server = new Thread(new Runnable() { |
| public void run() { |
| try { |
| InetSocketAddress peerAddress = new InetSocketAddress(); |
| FileDescriptor clientFd = Libcore.os.accept(serverFd, peerAddress); |
| checkSockName(clientFd, isAbstract, address); |
| checkNoName(peerAddress); |
| |
| checkNoPeerName(clientFd); |
| |
| StructUcred credentials = Libcore.os.getsockoptUcred(clientFd, SOL_SOCKET, SO_PEERCRED); |
| assertEquals(Libcore.os.getpid(), credentials.pid); |
| assertEquals(Libcore.os.getuid(), credentials.uid); |
| assertEquals(Libcore.os.getgid(), credentials.gid); |
| |
| byte[] request = new byte[256]; |
| Libcore.os.read(clientFd, request, 0, request.length); |
| |
| String s = new String(request, "UTF-8"); |
| byte[] response = s.toUpperCase(Locale.ROOT).getBytes("UTF-8"); |
| Libcore.os.write(clientFd, response, 0, response.length); |
| |
| Libcore.os.close(clientFd); |
| } catch (Exception ex) { |
| throw new RuntimeException(ex); |
| } |
| } |
| }); |
| server.start(); |
| |
| FileDescriptor clientFd = Libcore.os.socket(AF_UNIX, SOCK_STREAM, 0); |
| |
| Libcore.os.connect(clientFd, address, 0); |
| checkNoSockName(clientFd); |
| |
| String string = "hello, world!"; |
| |
| byte[] request = string.getBytes("UTF-8"); |
| assertEquals(request.length, Libcore.os.write(clientFd, request, 0, request.length)); |
| |
| byte[] response = new byte[request.length]; |
| assertEquals(response.length, Libcore.os.read(clientFd, response, 0, response.length)); |
| |
| assertEquals(string.toUpperCase(Locale.ROOT), new String(response, "UTF-8")); |
| |
| Libcore.os.close(clientFd); |
| } |
| |
| private void checkSockName(FileDescriptor fd, boolean isAbstract, InetAddress address) throws Exception { |
| InetSocketAddress isa = (InetSocketAddress) Libcore.os.getsockname(fd); |
| if (isAbstract) { |
| checkNoName(isa); |
| } else { |
| assertEquals(address, isa.getAddress()); |
| } |
| } |
| |
| private void checkNoName(SocketAddress sa) { |
| InetSocketAddress isa = (InetSocketAddress) sa; |
| assertEquals(0, isa.getAddress().getAddress().length); |
| } |
| |
| private void checkNoPeerName(FileDescriptor fd) throws Exception { |
| checkNoName(Libcore.os.getpeername(fd)); |
| } |
| |
| private void checkNoSockName(FileDescriptor fd) throws Exception { |
| checkNoName(Libcore.os.getsockname(fd)); |
| } |
| |
| public void test_strsignal() throws Exception { |
| assertEquals("Killed", Libcore.os.strsignal(9)); |
| assertEquals("Unknown signal -1", Libcore.os.strsignal(-1)); |
| } |
| |
| public void test_byteBufferPositions_write_pwrite() throws Exception { |
| FileOutputStream fos = new FileOutputStream(new File("/dev/null")); |
| FileDescriptor fd = fos.getFD(); |
| final byte[] contents = new String("goodbye, cruel world").getBytes(StandardCharsets.US_ASCII); |
| ByteBuffer byteBuffer = ByteBuffer.wrap(contents); |
| |
| byteBuffer.position(0); |
| int written = Libcore.os.write(fd, byteBuffer); |
| assertTrue(written > 0); |
| assertEquals(written, byteBuffer.position()); |
| |
| byteBuffer.position(4); |
| written = Libcore.os.write(fd, byteBuffer); |
| assertTrue(written > 0); |
| assertEquals(written + 4, byteBuffer.position()); |
| |
| byteBuffer.position(0); |
| written = Libcore.os.pwrite(fd, byteBuffer, 64 /* offset */); |
| assertTrue(written > 0); |
| assertEquals(written, byteBuffer.position()); |
| |
| byteBuffer.position(4); |
| written = Libcore.os.pwrite(fd, byteBuffer, 64 /* offset */); |
| assertTrue(written > 0); |
| assertEquals(written + 4, byteBuffer.position()); |
| |
| fos.close(); |
| } |
| |
| public void test_byteBufferPositions_read_pread() throws Exception { |
| FileInputStream fis = new FileInputStream(new File("/dev/zero")); |
| FileDescriptor fd = fis.getFD(); |
| ByteBuffer byteBuffer = ByteBuffer.allocate(64); |
| |
| byteBuffer.position(0); |
| int read = Libcore.os.read(fd, byteBuffer); |
| assertTrue(read > 0); |
| assertEquals(read, byteBuffer.position()); |
| |
| byteBuffer.position(4); |
| read = Libcore.os.read(fd, byteBuffer); |
| assertTrue(read > 0); |
| assertEquals(read + 4, byteBuffer.position()); |
| |
| byteBuffer.position(0); |
| read = Libcore.os.pread(fd, byteBuffer, 64 /* offset */); |
| assertTrue(read > 0); |
| assertEquals(read, byteBuffer.position()); |
| |
| byteBuffer.position(4); |
| read = Libcore.os.pread(fd, byteBuffer, 64 /* offset */); |
| assertTrue(read > 0); |
| assertEquals(read + 4, byteBuffer.position()); |
| |
| fis.close(); |
| } |
| |
| static void checkByteBufferPositions_sendto_recvfrom( |
| int family, InetAddress loopback) throws Exception { |
| final FileDescriptor serverFd = Libcore.os.socket(family, SOCK_STREAM, 0); |
| Libcore.os.bind(serverFd, loopback, 0); |
| Libcore.os.listen(serverFd, 5); |
| |
| InetSocketAddress address = (InetSocketAddress) Libcore.os.getsockname(serverFd); |
| |
| final Thread server = new Thread(new Runnable() { |
| public void run() { |
| try { |
| InetSocketAddress peerAddress = new InetSocketAddress(); |
| FileDescriptor clientFd = Libcore.os.accept(serverFd, peerAddress); |
| |
| // Attempt to receive a maximum of 24 bytes from the client, and then |
| // close the connection. |
| ByteBuffer buffer = ByteBuffer.allocate(16); |
| int received = Libcore.os.recvfrom(clientFd, buffer, 0, null); |
| assertTrue(received > 0); |
| assertEquals(received, buffer.position()); |
| |
| ByteBuffer buffer2 = ByteBuffer.allocate(16); |
| buffer2.position(8); |
| received = Libcore.os.recvfrom(clientFd, buffer2, 0, null); |
| assertTrue(received > 0); |
| assertEquals(received + 8, buffer.position()); |
| |
| Libcore.os.close(clientFd); |
| } catch (Exception ex) { |
| throw new RuntimeException(ex); |
| } |
| } |
| }); |
| |
| |
| server.start(); |
| |
| FileDescriptor clientFd = Libcore.os.socket(family, SOCK_STREAM, 0); |
| Libcore.os.connect(clientFd, address.getAddress(), address.getPort()); |
| |
| final byte[] bytes = "good bye, cruel black hole with fancy distortion".getBytes(StandardCharsets.US_ASCII); |
| assertTrue(bytes.length > 24); |
| |
| ByteBuffer input = ByteBuffer.wrap(bytes); |
| input.position(0); |
| input.limit(16); |
| |
| int sent = Libcore.os.sendto(clientFd, input, 0, address.getAddress(), address.getPort()); |
| assertTrue(sent > 0); |
| assertEquals(sent, input.position()); |
| |
| input.position(16); |
| input.limit(24); |
| sent = Libcore.os.sendto(clientFd, input, 0, address.getAddress(), address.getPort()); |
| assertTrue(sent > 0); |
| assertEquals(sent + 16, input.position()); |
| |
| Libcore.os.close(clientFd); |
| } |
| |
| public void test_NetlinkSocket() throws Exception { |
| FileDescriptor nlSocket = Libcore.os.socket(AF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE); |
| Libcore.os.bind(nlSocket, new NetlinkSocketAddress()); |
| NetlinkSocketAddress address = (NetlinkSocketAddress) Libcore.os.getsockname(nlSocket); |
| assertTrue(address.getPortId() > 0); |
| assertEquals(0, address.getGroupsMask()); |
| |
| NetlinkSocketAddress nlKernel = new NetlinkSocketAddress(); |
| Libcore.os.connect(nlSocket, nlKernel); |
| NetlinkSocketAddress nlPeer = (NetlinkSocketAddress) Libcore.os.getpeername(nlSocket); |
| assertEquals(0, nlPeer.getPortId()); |
| assertEquals(0, nlPeer.getGroupsMask()); |
| Libcore.os.close(nlSocket); |
| } |
| |
| public void test_PacketSocketAddress() throws Exception { |
| NetworkInterface lo = NetworkInterface.getByName("lo"); |
| FileDescriptor fd = Libcore.os.socket(AF_PACKET, SOCK_DGRAM, ETH_P_IPV6); |
| PacketSocketAddress addr = new PacketSocketAddress((short) ETH_P_IPV6, lo.getIndex()); |
| Libcore.os.bind(fd, addr); |
| |
| PacketSocketAddress bound = (PacketSocketAddress) Libcore.os.getsockname(fd); |
| assertEquals((short) ETH_P_IPV6, bound.sll_protocol); // ETH_P_IPV6 is an int. |
| assertEquals(lo.getIndex(), bound.sll_ifindex); |
| assertEquals(ARPHRD_LOOPBACK, bound.sll_hatype); |
| assertEquals(0, bound.sll_pkttype); |
| |
| // The loopback address is ETH_ALEN bytes long and is all zeros. |
| // http://lxr.free-electrons.com/source/drivers/net/loopback.c?v=3.10#L167 |
| assertEquals(6, bound.sll_addr.length); |
| for (int i = 0; i < 6; i++) { |
| assertEquals(0, bound.sll_addr[i]); |
| } |
| } |
| |
| public void test_byteBufferPositions_sendto_recvfrom_af_inet() throws Exception { |
| checkByteBufferPositions_sendto_recvfrom(AF_INET, InetAddress.getByName("127.0.0.1")); |
| } |
| |
| public void test_byteBufferPositions_sendto_recvfrom_af_inet6() throws Exception { |
| checkByteBufferPositions_sendto_recvfrom(AF_INET6, InetAddress.getByName("::1")); |
| } |
| |
| private void checkSendToSocketAddress(int family, InetAddress loopback) throws Exception { |
| FileDescriptor recvFd = Libcore.os.socket(family, SOCK_DGRAM, 0); |
| Libcore.os.bind(recvFd, loopback, 0); |
| StructTimeval tv = StructTimeval.fromMillis(20); |
| Libcore.os.setsockoptTimeval(recvFd, SOL_SOCKET, SO_RCVTIMEO, tv); |
| |
| InetSocketAddress to = ((InetSocketAddress) Libcore.os.getsockname(recvFd)); |
| FileDescriptor sendFd = Libcore.os.socket(family, SOCK_DGRAM, 0); |
| byte[] msg = ("Hello, I'm going to a socket address: " + to.toString()).getBytes("UTF-8"); |
| int len = msg.length; |
| |
| assertEquals(len, Libcore.os.sendto(sendFd, msg, 0, len, 0, to)); |
| byte[] received = new byte[msg.length + 42]; |
| InetSocketAddress from = new InetSocketAddress(); |
| assertEquals(len, Libcore.os.recvfrom(recvFd, received, 0, received.length, 0, from)); |
| assertEquals(loopback, from.getAddress()); |
| } |
| |
| public void test_sendtoSocketAddress_af_inet() throws Exception { |
| checkSendToSocketAddress(AF_INET, InetAddress.getByName("127.0.0.1")); |
| } |
| |
| public void test_sendtoSocketAddress_af_inet6() throws Exception { |
| checkSendToSocketAddress(AF_INET6, InetAddress.getByName("::1")); |
| } |
| |
| public void test_socketFamilies() throws Exception { |
| FileDescriptor fd = Libcore.os.socket(AF_INET6, SOCK_STREAM, 0); |
| Libcore.os.bind(fd, InetAddress.getByName("::"), 0); |
| InetSocketAddress localSocketAddress = (InetSocketAddress) Libcore.os.getsockname(fd); |
| assertEquals(Inet6Address.ANY, localSocketAddress.getAddress()); |
| |
| fd = Libcore.os.socket(AF_INET6, SOCK_STREAM, 0); |
| Libcore.os.bind(fd, InetAddress.getByName("0.0.0.0"), 0); |
| localSocketAddress = (InetSocketAddress) Libcore.os.getsockname(fd); |
| assertEquals(Inet6Address.ANY, localSocketAddress.getAddress()); |
| |
| fd = Libcore.os.socket(AF_INET, SOCK_STREAM, 0); |
| Libcore.os.bind(fd, InetAddress.getByName("0.0.0.0"), 0); |
| localSocketAddress = (InetSocketAddress) Libcore.os.getsockname(fd); |
| assertEquals(Inet4Address.ANY, localSocketAddress.getAddress()); |
| try { |
| Libcore.os.bind(fd, InetAddress.getByName("::"), 0); |
| fail("Expected ErrnoException binding IPv4 socket to ::"); |
| } catch (ErrnoException expected) { |
| assertEquals("Expected EAFNOSUPPORT binding IPv4 socket to ::", EAFNOSUPPORT, expected.errno); |
| } |
| } |
| |
| private static void assertArrayEquals(byte[] expected, byte[] actual) { |
| assertTrue("Expected=" + Arrays.toString(expected) + ", actual=" + Arrays.toString(actual), |
| Arrays.equals(expected, actual)); |
| } |
| |
| private static void checkSocketPing(FileDescriptor fd, InetAddress to, byte[] packet, |
| byte type, byte responseType, boolean useSendto) throws Exception { |
| int len = packet.length; |
| packet[0] = type; |
| if (useSendto) { |
| assertEquals(len, Libcore.os.sendto(fd, packet, 0, len, 0, to, 0)); |
| } else { |
| Libcore.os.connect(fd, to, 0); |
| assertEquals(len, Libcore.os.sendto(fd, packet, 0, len, 0, null, 0)); |
| } |
| |
| int icmpId = ((InetSocketAddress) Libcore.os.getsockname(fd)).getPort(); |
| byte[] received = new byte[4096]; |
| InetSocketAddress srcAddress = new InetSocketAddress(); |
| assertEquals(len, Libcore.os.recvfrom(fd, received, 0, received.length, 0, srcAddress)); |
| assertEquals(to, srcAddress.getAddress()); |
| assertEquals(responseType, received[0]); |
| assertEquals(received[4], (byte) (icmpId >> 8)); |
| assertEquals(received[5], (byte) (icmpId & 0xff)); |
| |
| received = Arrays.copyOf(received, len); |
| received[0] = (byte) type; |
| received[2] = received[3] = 0; // Checksum. |
| received[4] = received[5] = 0; // ICMP ID. |
| assertArrayEquals(packet, received); |
| } |
| |
| public void test_socketPing() throws Exception { |
| final byte ICMP_ECHO = 8, ICMP_ECHOREPLY = 0; |
| final byte ICMPV6_ECHO_REQUEST = (byte) 128, ICMPV6_ECHO_REPLY = (byte) 129; |
| final byte[] packet = ("\000\000\000\000" + // ICMP type, code. |
| "\000\000\000\003" + // ICMP ID (== port), sequence number. |
| "Hello myself").getBytes(StandardCharsets.US_ASCII); |
| |
| FileDescriptor fd = Libcore.os.socket(AF_INET6, SOCK_DGRAM, IPPROTO_ICMPV6); |
| InetAddress ipv6Loopback = InetAddress.getByName("::1"); |
| checkSocketPing(fd, ipv6Loopback, packet, ICMPV6_ECHO_REQUEST, ICMPV6_ECHO_REPLY, true); |
| checkSocketPing(fd, ipv6Loopback, packet, ICMPV6_ECHO_REQUEST, ICMPV6_ECHO_REPLY, false); |
| |
| fd = Libcore.os.socket(AF_INET, SOCK_DGRAM, IPPROTO_ICMP); |
| InetAddress ipv4Loopback = InetAddress.getByName("127.0.0.1"); |
| checkSocketPing(fd, ipv4Loopback, packet, ICMP_ECHO, ICMP_ECHOREPLY, true); |
| checkSocketPing(fd, ipv4Loopback, packet, ICMP_ECHO, ICMP_ECHOREPLY, false); |
| } |
| |
| private static void assertPartial(byte[] expected, byte[] actual) { |
| for (int i = 0; i < expected.length; i++) { |
| if (expected[i] != actual[i]) { |
| fail("Expected " + Arrays.toString(expected) + " but found " |
| + Arrays.toString(actual)); |
| } |
| } |
| } |
| |
| public void test_xattr() throws Exception { |
| final String NAME_TEST = "user.meow"; |
| |
| final byte[] VALUE_CAKE = "cake cake cake".getBytes(StandardCharsets.UTF_8); |
| final byte[] VALUE_PIE = "pie".getBytes(StandardCharsets.UTF_8); |
| |
| File file = File.createTempFile("xattr", "test"); |
| String path = file.getAbsolutePath(); |
| |
| byte[] tmp = new byte[1024]; |
| try { |
| try { |
| Libcore.os.getxattr(path, NAME_TEST, tmp); |
| fail("Expected ENODATA"); |
| } catch (ErrnoException e) { |
| assertEquals(OsConstants.ENODATA, e.errno); |
| } |
| |
| Libcore.os.setxattr(path, NAME_TEST, VALUE_CAKE, OsConstants.XATTR_CREATE); |
| assertEquals(VALUE_CAKE.length, Libcore.os.getxattr(path, NAME_TEST, tmp)); |
| assertPartial(VALUE_CAKE, tmp); |
| |
| try { |
| Libcore.os.setxattr(path, NAME_TEST, VALUE_PIE, OsConstants.XATTR_CREATE); |
| fail("Expected EEXIST"); |
| } catch (ErrnoException e) { |
| assertEquals(OsConstants.EEXIST, e.errno); |
| } |
| |
| Libcore.os.setxattr(path, NAME_TEST, VALUE_PIE, OsConstants.XATTR_REPLACE); |
| assertEquals(VALUE_PIE.length, Libcore.os.getxattr(path, NAME_TEST, tmp)); |
| assertPartial(VALUE_PIE, tmp); |
| |
| Libcore.os.removexattr(path, NAME_TEST); |
| try { |
| Libcore.os.getxattr(path, NAME_TEST, tmp); |
| fail("Expected ENODATA"); |
| } catch (ErrnoException e) { |
| assertEquals(OsConstants.ENODATA, e.errno); |
| } |
| |
| } finally { |
| file.delete(); |
| } |
| } |
| } |