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Sockaddr.java
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Sockaddr.java
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package org.jruby.util.io;
import jnr.constants.platform.AddressFamily;
import jnr.netdb.Service;
import jnr.unixsocket.UnixSocketAddress;
import org.jruby.Ruby;
import org.jruby.RubyArray;
import org.jruby.RubyNumeric;
import org.jruby.RubyBoolean;
import org.jruby.exceptions.RaiseException;
import org.jruby.ext.socket.Addrinfo;
import org.jruby.runtime.ThreadContext;
import org.jruby.runtime.builtin.IRubyObject;
import org.jruby.util.ByteList;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.IOException;
import java.net.SocketException;
import java.nio.ByteBuffer;
import java.net.Inet4Address;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.net.UnknownHostException;
import org.jruby.RubyString;
import org.jruby.ext.socket.SocketUtils;
import org.jruby.ext.socket.SocketUtilsIPV6;
import org.jruby.runtime.Helpers;
public class Sockaddr {
public static InetAddress addressFromString(Ruby runtime, String s) {
try {
byte[] bs = ByteList.plain(s);
return InetAddress.getByAddress(bs);
} catch(Exception e) {
throw sockerr(runtime, "strtoaddr: " + e.toString());
}
}
public static String stringFromAddress(Ruby runtime, InetAddress as) {
try {
return new String(ByteList.plain(as.getAddress()));
} catch(Exception e) {
throw sockerr(runtime, "addrtostr: " + e.toString());
}
}
public static InetSocketAddress addressFromArg(ThreadContext context, IRubyObject arg) {
InetSocketAddress iaddr;
if (arg instanceof Addrinfo) {
Addrinfo addrinfo = (Addrinfo)arg;
if (!addrinfo.ip_p(context).isTrue()) {
throw context.runtime.newTypeError("not an INET or INET6 address: " + addrinfo);
}
iaddr = new InetSocketAddress(addrinfo.getInetAddress(), addrinfo.getPort());
} else {
iaddr = addressFromSockaddr_in(context, arg);
}
return iaddr;
}
public static InetSocketAddress addressFromSockaddr_in(ThreadContext context, IRubyObject arg) {
ByteList val = arg.convertToString().getByteList();
return addressFromSockaddr_in(context, val);
}
public static InetSocketAddress addressFromSockaddr_in(ThreadContext context, ByteList val) {
RubyArray sockaddr = (RubyArray) unpack_sockaddr_in(context, val);
IRubyObject addr = sockaddr.pop(context);
IRubyObject _port = sockaddr.pop(context);
int port = SocketUtils.portToInt(_port);
return new InetSocketAddress(
addr.convertToString().toString(), port);
}
public static SocketAddress addressFromSockaddr(ThreadContext context, IRubyObject arg) {
Ruby runtime = context.runtime;
ByteList val = arg.convertToString().getByteList();
AddressFamily af = getAddressFamilyFromSockaddr(runtime, val);
switch (af) {
case AF_UNIX:
return addressFromSockaddr_un(context, val);
case AF_INET:
case AF_INET6:
return addressFromSockaddr_in(context, val);
default:
throw runtime.newArgumentError("can't resolve socket address of wrong type");
}
}
public static UnixSocketAddress addressFromSockaddr_un(ThreadContext context, IRubyObject arg) {
ByteList val = arg.convertToString().getByteList();
return addressFromSockaddr_un(context, val);
}
public static UnixSocketAddress addressFromSockaddr_un(ThreadContext context, ByteList bl) {
RubyString pathStr = pathFromSockaddr_un(context, bl.bytes());
return new UnixSocketAddress(new File(pathStr.toString()));
}
public static IRubyObject packSockaddrFromAddress(ThreadContext context, InetSocketAddress sock) {
if (sock == null) {
return pack_sockaddr_in(context, 0, "");
} else {
return pack_sockaddr_in(context, sock);
}
}
public static IRubyObject pack_sockaddr_in(ThreadContext context, IRubyObject port, IRubyObject host) {
int portNum;
if (port.isNil()) {
portNum = 0;
} else if (port instanceof RubyString) {
String portString = port.asJavaString();
try {
portNum = Integer.parseInt(portString);
} catch (NumberFormatException e) {
Service service = Service.getServiceByName(portString, "tcp"); // FIXME: is tcp safe here?
if (service == null) throw sockerr(context.runtime, "getaddrinfo: Servname not supported for ai_socktype");
portNum = service.getPort();
}
} else {
portNum = RubyNumeric.fix2int(port);
}
final String hostStr = host.isNil() ? null : host.convertToString().toString();
return pack_sockaddr_in(context, portNum, hostStr);
}
public static IRubyObject pack_sockaddr_in(ThreadContext context, int port, String host) {
ByteArrayOutputStream bufS = new ByteArrayOutputStream();
try {
DataOutputStream ds = new DataOutputStream(bufS);
try {
if ( host != null && host.length() == 0 ) {
writeSockaddrHeader(AddressFamily.AF_INET, ds);
writeSockaddrPort(ds, port);
ds.writeInt(0);
} else {
InetAddress[] addrs = InetAddress.getAllByName(host);
byte[] addr = addrs[0].getAddress();
if (addr.length == 4) {
writeSockaddrHeader(AddressFamily.AF_INET, ds);
} else {
writeSockaddrHeader(AddressFamily.AF_INET6, ds);
}
writeSockaddrPort(ds, port);
ds.write(addr, 0, addr.length);
}
}
catch (UnknownHostException e) {
throw sockerr(context.runtime, "getaddrinfo: No address associated with nodename");
}
writeSockaddrFooter(ds);
}
catch (IOException e) {
throw sockerr(context.runtime, "pack_sockaddr_in: internal error");
}
return context.runtime.newString(new ByteList(bufS.toByteArray(),
false));
}
public static IRubyObject pack_sockaddr_in(ThreadContext context, InetSocketAddress sock) {
ByteArrayOutputStream bufS = new ByteArrayOutputStream();
try {
DataOutputStream ds = new DataOutputStream(bufS);
InetAddress inet = sock.getAddress();
if (inet instanceof Inet4Address) {
writeSockaddrHeader(AddressFamily.AF_INET, ds);
} else {
writeSockaddrHeader(AddressFamily.AF_INET6, ds);
}
writeSockaddrPort(ds, sock);
String host = sock.getAddress().getHostAddress();
if ("".equals(host)) {
ds.writeInt(0);
} else {
byte[] addr = sock.getAddress().getAddress();
ds.write(addr, 0, addr.length);
}
writeSockaddrFooter(ds);
} catch (IOException e) {
throw sockerr(context.runtime, "pack_sockaddr_in: internal error");
}
return context.runtime.newString(new ByteList(bufS.toByteArray(),
false));
}
public static RubyArray unpack_sockaddr_in(ThreadContext context, IRubyObject addr) {
final Ruby runtime = context.runtime;
if (addr instanceof Addrinfo) {
Addrinfo addrinfo = (Addrinfo)addr;
if (((RubyBoolean)addrinfo.ip_p(context)).isFalse()) {
throw runtime.newArgumentError("not an AF_INET/AF_INET6 sockaddr");
}
return RubyArray.newArray(runtime, addrinfo.ip_port(context),
addrinfo.ip_address(context));
}
ByteList val = addr.convertToString().getByteList();
return unpack_sockaddr_in(context, val);
}
public static RubyArray unpack_sockaddr_in(ThreadContext context, ByteList val) {
final Ruby runtime = context.runtime;
AddressFamily af = getAddressFamilyFromSockaddr(runtime, val);
if (af != AddressFamily.AF_INET &&
af != AddressFamily.AF_INET6) {
throw runtime.newArgumentError("not an AF_INET/AF_INET6 sockaddr");
}
int port = ((val.get(2)&0xff) << 8) + (val.get(3)&0xff);
final StringBuilder formatAddr = new StringBuilder();
RubyString ip;
if (af == AddressFamily.AF_INET) {
formatAddr.append(val.get(4) & 0xff)
.append('.')
.append(val.get(5) & 0xff)
.append('.')
.append(val.get(6) & 0xff)
.append('.')
.append(val.get(7) & 0xff);
ip = RubyString.newString(runtime, formatAddr);
} else { // if af == AddressFamily.AF_INET6
for (int i = 4; i <= 19; i++) {
if (i != 4 && i % 2 == 0) formatAddr.append(':');
formatAddr.append(Integer.toHexString(val.get(i) & 0xff | 0x100).substring(1));
}
ip = RubyString.newString(runtime,
SocketUtilsIPV6.getIPV6Address(formatAddr.toString()));
}
return RubyArray.newArray(runtime, runtime.newFixnum(port), ip);
}
public static IRubyObject pack_sockaddr_un(ThreadContext context, String unixpath) {
final Ruby runtime = context.runtime;
ByteBuffer buf = ByteBuffer.allocate(SOCKADDR_UN_SIZE);
byte[] path = unixpath.getBytes();
if (path.length > SOCKADDR_UN_PATH) {
String errorMsg = "too long unix socket path (%d bytes given but %d bytes max)";
String formattedErrorMsg = String.format(errorMsg, path.length, SOCKADDR_UN_PATH);
throw runtime.newArgumentError(formattedErrorMsg);
}
int afamily = AddressFamily.AF_UNIX.intValue();
int high = (afamily & 0xff00) >> 8;
int low = afamily & 0xff;
buf.put((byte)high);
buf.put((byte)low);
buf.put(path);
return RubyString.newString(runtime, buf.array());
}
public static IRubyObject unpack_sockaddr_un(ThreadContext context, IRubyObject addr) {
final Ruby runtime = context.runtime;
if (addr instanceof Addrinfo) {
Addrinfo addrinfo = (Addrinfo)addr;
if (((RubyBoolean)addrinfo.unix_p(context)).isFalse()) {
throw runtime.newArgumentError("not an AF_UNIX sockaddr");
}
return addrinfo.unix_path(context);
}
ByteList val = addr.convertToString().getByteList();
AddressFamily af = getAddressFamilyFromSockaddr(runtime, val);
if (af != AddressFamily.AF_UNIX) {
throw runtime.newArgumentError("not an AF_UNIX sockaddr");
}
return pathFromSockaddr_un(context, val.bytes());
}
public static void writeSockaddrHeader(AddressFamily family, DataOutputStream ds) throws IOException {
int value = family.intValue();
int high = (value & 0xff00) >> 8;
int low = value & 0xff;
ds.write((byte)high);
ds.write((byte)low);
}
public static void writeSockaddrFooter(DataOutputStream ds) throws IOException {
ds.writeInt(0);
ds.writeInt(0);
}
public static void writeSockaddrPort(DataOutputStream ds, InetSocketAddress sockaddr) throws IOException {
writeSockaddrPort(ds, sockaddr.getPort());
}
public static void writeSockaddrPort(DataOutputStream ds, int port) throws IOException {
ds.write(port >> 8);
ds.write(port);
}
public static AddressFamily getAddressFamilyFromSockaddr(Ruby runtime, ByteList val) {
if (val.length() < 2) {
throw runtime.newArgumentError("too short sockaddr");
}
int high = val.get(0) & 0xff;
int low = val.get(1) & 0xff;
return AddressFamily.valueOf((high << 8) + low);
}
private static RuntimeException sockerr(Ruby runtime, String msg) {
return RaiseException.from(runtime, runtime.getClass("SocketError"), msg);
}
public static SocketAddress sockaddrFromBytes(Ruby runtime, byte[] val) throws IOException {
AddressFamily afamily = AddressFamily.valueOf(uint16(val[0], val[1]));
if (afamily == null || afamily == AddressFamily.__UNKNOWN_CONSTANT__) {
throw runtime.newArgumentError("can't resolve socket address of wrong type");
}
int port;
switch (afamily) {
case AF_INET:
port = uint16(val[2], val[3]);
Inet4Address inet4Address = (Inet4Address)InetAddress.getByAddress(Helpers.subseq(val, 4, 4));
return new InetSocketAddress(inet4Address, port);
case AF_INET6:
port = uint16(val[2], val[3]);
Inet6Address inet6Address = (Inet6Address)InetAddress.getByAddress(Helpers.subseq(val, 4, 16));
return new InetSocketAddress(inet6Address, port);
case AF_UNIX:
String path = new String(val, 2, val.length - 2);
return new UnixSocketAddress(new File(path));
default:
throw runtime.newArgumentError("can't resolve socket address of wrong type");
}
}
private static int uint16(byte high, byte low) {
return ((high & 0xFF) << 8) + (low & 0xFF);
}
private static RubyString pathFromSockaddr_un(ThreadContext context, byte[] raw) {
int end = 2;
for (; end < raw.length; end++) {
if (raw[end] == 0) break;
}
return RubyString.newString(context.runtime, raw, 2, (end - 2));
}
// sizeof(sockaddr_un) on Linux
// 2 bytes sun_family + 108 bytes sun_path
private static final int SOCKADDR_UN_PATH = 108;
private static final int SOCKADDR_UN_SIZE = 2 + SOCKADDR_UN_PATH;
}