public void TestAnnotations()
{
var annotations = new Dictionary<string,byte[]>();
annotations["TEST"]=new byte[]{10,20,30,40,50};
var msg = new Message(Message.MSG_CONNECT, new byte[]{1,2,3,4,5}, this.serializer_id, 0, 0, annotations);
byte[] data = msg.to_bytes();
int annotations_size = 4+2+20 + 4+2+5;
Assert.AreEqual(Message.HEADER_SIZE + 5 + annotations_size, data.Length);
Assert.AreEqual(annotations_size, msg.annotations_size);
Assert.AreEqual(2, msg.annotations.Count);
Assert.AreEqual(new byte[]{10,20,30,40,50}, msg.annotations["TEST"]);
byte[] mac = pyrohmac(new byte[]{1,2,3,4,5}, annotations);
Assert.AreEqual(mac, msg.annotations["HMAC"]);
}
public void TestMessage()
{
new Message(99, new byte[0], this.serializer_id, 0, 0, null); // doesn't check msg type here
Assert.Throws(typeof(PyroException), ()=>Message.from_header(Encoding.ASCII.GetBytes("FOOBAR")));
var msg = new Message(Message.MSG_CONNECT, Encoding.ASCII.GetBytes("hello"), this.serializer_id, 0, 0, null);
Assert.AreEqual(Message.MSG_CONNECT, msg.type);
Assert.AreEqual(5, msg.data_size);
Assert.AreEqual(new byte[]{(byte)'h',(byte)'e',(byte)'l',(byte)'l',(byte)'o'}, msg.data);
Assert.AreEqual(4+2+20, msg.annotations_size);
byte[] mac = pyrohmac(Encoding.ASCII.GetBytes("hello"), msg.annotations);
var expected = new Dictionary<string, byte[]>();
expected["HMAC"] = mac;
CollectionAssert.AreEqual(expected, msg.annotations);
byte[] hdr = msg.to_bytes().Take(Message.HEADER_SIZE).ToArray();
msg = Message.from_header(hdr);
Assert.AreEqual(Message.MSG_CONNECT, msg.type);
Assert.AreEqual(4+2+20, msg.annotations_size);
Assert.AreEqual(5, msg.data_size);
hdr = new Message(Message.MSG_RESULT, new byte[0], this.serializer_id, 0, 0, null).to_bytes().Take(Message.HEADER_SIZE).ToArray();
msg = Message.from_header(hdr);
Assert.AreEqual(Message.MSG_RESULT, msg.type);
Assert.AreEqual(4+2+20, msg.annotations_size);
Assert.AreEqual(0, msg.data_size);
hdr = new Message(Message.MSG_RESULT, Encoding.ASCII.GetBytes("hello"), 12345, 60006, 30003, null).to_bytes().Take(Message.HEADER_SIZE).ToArray();
msg = Message.from_header(hdr);
Assert.AreEqual(Message.MSG_RESULT, msg.type);
Assert.AreEqual(60006, msg.flags);
Assert.AreEqual(5, msg.data_size);
Assert.AreEqual(12345, msg.serializer_id);
Assert.AreEqual(30003, msg.seq);
byte[] data = new Message(255, new byte[0], this.serializer_id, 0, 255, null).to_bytes();
Assert.AreEqual(50, data.Length);
data = new Message(1, new byte[0], this.serializer_id, 0, 255, null).to_bytes();
Assert.AreEqual(50, data.Length);
data = new Message(1, new byte[0], this.serializer_id, 253, 254, null).to_bytes();
Assert.AreEqual(50, data.Length);
// compression is a job of the code supplying the data, so the messagefactory should leave it untouched
data = new byte[1000];
byte[] msg_bytes1 = new Message(Message.MSG_INVOKE, data, this.serializer_id, 0, 0, null).to_bytes();
byte[] msg_bytes2 = new Message(Message.MSG_INVOKE, data, this.serializer_id, Message.FLAGS_COMPRESSED, 0, null).to_bytes();
Assert.AreEqual(msg_bytes1.Length, msg_bytes2.Length);
}
public void testAnnotationsIdLength4()
{
try {
var anno = new Dictionary<string, byte[]>();
anno["TOOLONG"] = new byte[]{10,20,30};
var msg = new Message(Message.MSG_CONNECT, new byte[]{1,2,3,4,5}, this.serializer_id, 0, 0, anno);
byte[]data = msg.to_bytes();
Assert.Fail("should fail, too long");
} catch(ArgumentException) {
//ok
}
try {
var anno = new Dictionary<string, byte[]>();
anno["QQ"] = new byte[]{10,20,30};
var msg = new Message(Message.MSG_CONNECT, new byte[]{1,2,3,4,5}, this.serializer_id, 0, 0, anno);
byte[] data = msg.to_bytes();
Assert.Fail("should fail, too short");
} catch (ArgumentException) {
//ok
}
}
public void TestAnnotations()
{
byte[] hmac=Encoding.UTF8.GetBytes("secret");
var annotations = new Dictionary<string,byte[]>();
annotations["TES1"]=new byte[]{10,20,30,40,50};
annotations["TES2"]=new byte[]{20,30,40,50,60};
annotations["TES3"]=new byte[]{30,40,50,60,70};
annotations["TES4"]=new byte[]{40,50,60,70,80};
var msg = new Message(Message.MSG_CONNECT, new byte[]{1,2,3,4,5}, this.serializer_id, 0, 0, annotations, hmac);
byte[] data = msg.to_bytes();
int annotations_size = 4+2+20 + (4+2+5)*4;
Assert.AreEqual(Message.HEADER_SIZE + 5 + annotations_size, data.Length);
Assert.AreEqual(annotations_size, msg.annotations_size);
Assert.AreEqual(5, msg.annotations.Count);
Assert.AreEqual(new byte[]{10,20,30,40,50}, msg.annotations["TES1"]);
Assert.AreEqual(new byte[]{20,30,40,50,60}, msg.annotations["TES2"]);
Assert.AreEqual(new byte[]{30,40,50,60,70}, msg.annotations["TES3"]);
Assert.AreEqual(new byte[]{40,50,60,70,80}, msg.annotations["TES4"]);
byte[] mac = msg.hmac(hmac);
Assert.AreEqual(mac, msg.annotations["HMAC"]);
annotations = new Dictionary<string,byte[]>();
annotations["TES4"]=new byte[]{40,50,60,70,80};
annotations["TES3"]=new byte[]{30,40,50,60,70};
annotations["TES2"]=new byte[]{20,30,40,50,60};
annotations["TES1"]=new byte[]{10,20,30,40,50};
var msg2 = new Message(Message.MSG_CONNECT, new byte[]{1,2,3,4,5}, this.serializer_id, 0, 0, annotations, hmac);
Assert.AreEqual(msg.hmac(hmac), msg2.hmac(hmac));
annotations = new Dictionary<string,byte[]>();
annotations["TES4"]=new byte[]{40,50,60,70,80};
var msg3 = new Message(Message.MSG_CONNECT, new byte[]{1,2,3,4,5}, this.serializer_id, 0, 0, annotations, hmac);
Assert.AreNotEqual(msg.hmac(hmac), msg3.hmac(hmac));
}
public void testRecvNoAnnotations()
{
var msg = new Message(Message.MSG_CONNECT, new byte[]{1,2,3,4,5}, 42, 0, 0, null);
var c = new ConnectionMock();
c.send(msg.to_bytes());
msg = Message.recv(c, null);
Assert.AreEqual(0, c.RemainingLength);
Assert.AreEqual(5, msg.data_size);
Assert.AreEqual(new byte[]{1,2,3,4,5}, msg.data);
Assert.AreEqual(0, msg.annotations_size);
Assert.AreEqual(0, msg.annotations.Count);
}
public void testRecvAnnotations()
{
var annotations = new Dictionary<string, byte[]>();
annotations["TEST"] = new byte[]{10, 20,30,40,50};
var msg = new Message(Message.MSG_CONNECT, new byte[]{1,2,3,4,5}, this.serializer_id, 0, 0, annotations);
var c = new ConnectionMock();
c.send(msg.to_bytes());
msg = Message.recv(c, null);
Assert.AreEqual(0, c.RemainingLength);
Assert.AreEqual(5, msg.data_size);
Assert.AreEqual(new byte[]{1,2,3,4,5}, msg.data);
Assert.AreEqual(new byte[]{10,20,30,40,50}, msg.annotations["TEST"]);
Assert.IsTrue(msg.annotations.ContainsKey("HMAC"));
}
public void testProtocolVersion()
{
byte[] msg = new Message(Message.MSG_RESULT, new byte[0], this.serializer_id, 0, 1, null).to_bytes().Take(Message.HEADER_SIZE).ToArray();
msg[4] = 99; // screw up protocol version in message header
Message.from_header(msg);
}
public void testRecvAnnotations()
{
var annotations = new Dictionary<string, byte[]>();
annotations["TEST"] = new byte[]{10, 20,30,40,50};
var msg = new Message(Message.MSG_CONNECT, new byte[]{1,2,3,4,5}, this.serializer_id, 0, 0, annotations, Encoding.UTF8.GetBytes("secret"));
var ms = new MemoryStream(msg.to_bytes());
msg = Message.recv(ms, null, Encoding.UTF8.GetBytes("secret"));
Assert.AreEqual(-1, ms.ReadByte());
Assert.AreEqual(5, msg.data_size);
Assert.AreEqual(new byte[]{1,2,3,4,5}, msg.data);
Assert.AreEqual(new byte[]{10,20,30,40,50}, msg.annotations["TEST"]);
Assert.IsTrue(msg.annotations.ContainsKey("HMAC"));
}
/// <summary>
/// Decompress the data bytes in the given message (in place).
/// </summary>
private void _decompressMessageData(Message msg)
{
if((msg.flags & Message.FLAGS_COMPRESSED) == 0) {
throw new ArgumentException("message data is not compressed");
}
using(MemoryStream compressed=new MemoryStream(msg.data, 2, msg.data.Length-2, false)) {
using(DeflateStream decompresser=new DeflateStream(compressed, CompressionMode.Decompress)) {
MemoryStream bos = new MemoryStream(msg.data.Length);
byte[] buffer = new byte[4096];
int numRead;
while ((numRead = decompresser.Read(buffer, 0, buffer.Length)) != 0) {
bos.Write(buffer, 0, numRead);
}
msg.data=bos.ToArray();
msg.flags ^= Message.FLAGS_COMPRESSED;
}
}
}
/// <summary>
/// Perform the Pyro protocol connection handshake with the Pyro daemon.
/// </summary>
protected void _handshake()
{
var ser = PyroSerializer.GetFor(Config.SERIALIZER);
var handshakedata = new Dictionary<string, Object>();
handshakedata["handshake"] = pyroHandshake;
if(Config.METADATA)
handshakedata["object"] = objectid;
byte[] data = ser.serializeData(handshakedata);
ushort flags = Config.METADATA? Message.FLAGS_META_ON_CONNECT : (ushort)0;
var msg = new Message(Message.MSG_CONNECT, data, ser.serializer_id, flags, sequenceNr, annotations(), pyroHmacKey);
IOUtil.send(sock_stream, msg.to_bytes());
if(Config.MSG_TRACE_DIR!=null) {
Message.TraceMessageSend(sequenceNr, msg.get_header_bytes(), msg.get_annotations_bytes(), msg.data);
}
// process handshake response
msg = Message.recv(sock_stream, new ushort[]{Message.MSG_CONNECTOK, Message.MSG_CONNECTFAIL}, pyroHmacKey);
responseAnnotations(msg.annotations, msg.type);
object handshake_response = "?";
if(msg.data!=null) {
if((msg.flags & Message.FLAGS_COMPRESSED) != 0) {
_decompressMessageData(msg);
}
handshake_response = ser.deserializeData(msg.data);
}
if(msg.type==Message.MSG_CONNECTOK) {
if((msg.flags & Message.FLAGS_META_ON_CONNECT) != 0) {
var response_dict = (Hashtable)handshake_response;
_processMetadata(response_dict["meta"] as Hashtable);
handshake_response = response_dict["handshake"];
try {
validateHandshake(handshake_response);
} catch (Exception) {
close();
throw;
}
}
} else if (msg.type==Message.MSG_CONNECTFAIL) {
close();
throw new PyroException("connection rejected, reason: "+handshake_response);
} else {
close();
throw new PyroException(string.Format("connect: invalid msg type {0} received", msg.type));
}
}
public void testProtocolVersionsNotSupported2()
{
byte[] msg = new Message(Message.MSG_RESULT, new byte[0], this.serializer_id, 0, 1, null).to_bytes().Take(Message.HEADER_SIZE).ToArray();
msg[4] = 0;
msg[5] = 48;
Message.from_header(msg);
}
/**
* Internal call method to actually perform the Pyro method call and process the result.
*/
private object call(string method, ushort flags, params object[] parameters)
{
lock(this) {
connect();
unchecked {
sequenceNr++; // unchecked so this ushort wraps around 0-65535 instead of raising an OverflowException
}
}
if (parameters == null)
parameters = new object[] {};
PyroSerializer ser = PyroSerializer.GetFor(Config.SERIALIZER);
byte[] pickle = ser.serializeCall(objectid, method, parameters, new Dictionary<string,object>(0));
var msg = new Message(Message.MSG_INVOKE, pickle, ser.serializer_id, flags, sequenceNr, null);
Message resultmsg;
lock (this.sock) {
IOUtil.send(sock_stream, msg.to_bytes());
if(Config.MSG_TRACE_DIR!=null) {
Message.TraceMessageSend(sequenceNr, msg.get_header_bytes(), msg.get_annotations_bytes(), msg.data);
}
pickle = null;
if ((flags & Message.FLAGS_ONEWAY) != 0)
return null;
resultmsg = Message.recv(sock_stream, new ushort[]{Message.MSG_RESULT});
}
if (resultmsg.seq != sequenceNr) {
throw new PyroException("result msg out of sync");
}
if ((resultmsg.flags & Message.FLAGS_COMPRESSED) != 0) {
// we need to skip the first 2 bytes in the buffer due to a tiny mismatch between zlib-written
// data and the deflate data bytes that .net expects.
// See http://www.chiramattel.com/george/blog/2007/09/09/deflatestream-block-length-does-not-match.html
using(MemoryStream compressed=new MemoryStream(resultmsg.data, 2, resultmsg.data.Length-2, false)) {
using(DeflateStream decompresser=new DeflateStream(compressed, CompressionMode.Decompress)) {
MemoryStream bos = new MemoryStream(resultmsg.data.Length);
byte[] buffer = new byte[4096];
int numRead;
while ((numRead = decompresser.Read(buffer, 0, buffer.Length)) != 0) {
bos.Write(buffer, 0, numRead);
}
resultmsg.data=bos.ToArray();
}
}
}
if ((resultmsg.flags & Message.FLAGS_EXCEPTION) != 0) {
Exception rx = (Exception) ser.deserializeData(resultmsg.data);
if (rx is PyroException) {
throw (PyroException) rx;
} else {
PyroException px = new PyroException("remote exception occurred", rx);
PropertyInfo remotetbProperty=rx.GetType().GetProperty("_pyroTraceback");
if(remotetbProperty!=null) {
string remotetb=(string)remotetbProperty.GetValue(rx,null);
px._pyroTraceback=remotetb;
}
throw px;
}
}
return ser.deserializeData(resultmsg.data);
}
public void testChecksum()
{
var msg = new Message(Message.MSG_RESULT, new byte[]{1,2,3,4}, 42, 0, 1, null, null);
byte[] data = msg.to_bytes();
// corrupt the checksum bytes
data[Message.HEADER_SIZE-2] = 0;
data[Message.HEADER_SIZE-1] = 0;
Stream ms = new MemoryStream(data);
try {
Message.recv(ms, null, null);
Assert.Fail("crash expected");
}
catch(PyroException x) {
Assert.IsTrue(x.Message.Contains("checksum"));
}
}
public void testRecvNoAnnotations()
{
var msg = new Message(Message.MSG_CONNECT, new byte[]{1,2,3,4,5}, 42, 0, 0, null, null);
byte[] data = msg.to_bytes();
var ms = new MemoryStream(data);
msg = Message.recv(ms, null, null);
Assert.AreEqual(-1, ms.ReadByte());
Assert.AreEqual(5, msg.data_size);
Assert.AreEqual(new byte[]{1,2,3,4,5}, msg.data);
Assert.AreEqual(0, msg.annotations_size);
Assert.AreEqual(0, msg.annotations.Count);
}
public void testChecksum()
{
var msg = new Message(Message.MSG_RESULT, new byte[]{1,2,3,4}, 42, 0, 1, null);
var c = new ConnectionMock();
c.send(msg.to_bytes());
// corrupt the checksum bytes
byte[] data = c.ReceivedData;
data[Message.HEADER_SIZE-2] = 0;
data[Message.HEADER_SIZE-1] = 0;
c = new ConnectionMock(data);
try {
Message.recv(c, null);
Assert.Fail("crash expected");
}
catch(PyroException x) {
Assert.IsTrue(x.Message.Contains("checksum"));
}
}
/// <summary>
/// Parses a message header. Does not yet process the annotations chunks and message data.
/// </summary>
public static Message from_header(byte[] header)
{
if(header==null || header.Length!=HEADER_SIZE)
throw new PyroException("header data size mismatch");
if(header[0]!='P'||header[1]!='Y'||header[2]!='R'||header[3]!='O')
throw new PyroException("invalid message");
int version = (header[4] << 8)|header[5];
if(version!=Config.PROTOCOL_VERSION)
throw new PyroException("invalid protocol version: "+version);
int msg_type = (header[6] << 8)|header[7];
int flags = (header[8] << 8)|header[9];
int seq = (header[10] << 8)|header[11];
int data_size=(((((header[12] <<8) | header[13]) <<8) | header[14]) <<8) | header[15];
int serializer_id = (header[16] << 8)|header[17];
int annotations_size = (header[18]<<8)|header[19];
// byte 20 and 21 are reserved.
int checksum = (header[22]<<8)|header[23];
if(checksum!=((msg_type+version+data_size+annotations_size+flags+serializer_id+seq+CHECKSUM_MAGIC)&0xffff))
throw new PyroException("header checksum mismatch");
var msg = new Message((ushort)msg_type, (ushort)serializer_id, (ushort)flags, (ushort)seq);
msg.data_size = data_size;
msg.annotations_size = (ushort)annotations_size;
return msg;
}
public void testHmac()
{
byte[] hk=Config.HMAC_KEY;
Stream c;
byte[] data;
try {
Config.HMAC_KEY = Encoding.ASCII.GetBytes("test key");
data = new Message(Message.MSG_RESULT, new byte[]{1,2,3,4,5}, 42, 0, 1, null).to_bytes();
c = new ConnectionMock(data);
}
finally {
Config.HMAC_KEY = hk;
}
// test checking of different hmacs
try {
Message.recv(c, null);
Assert.Fail("crash expected");
}
catch(PyroException x) {
Assert.IsTrue(x.Message.Contains("hmac"));
}
c = new ConnectionMock(data);
// test that it works again when resetting the key
try {
hk = Config.HMAC_KEY;
Config.HMAC_KEY = Encoding.ASCII.GetBytes("test key");
Message.recv(c, null);
}
finally {
Config.HMAC_KEY = hk;
}
c = new ConnectionMock(data);
// test that it doesn't work when no key is set
try {
hk = Config.HMAC_KEY;
Config.HMAC_KEY = null;
Message.recv(c, null);
Assert.Fail("crash expected");
}
catch(PyroException x) {
Assert.IsTrue(x.Message.Contains("hmac key config"));
}
finally {
Config.HMAC_KEY = hk;
}
}
/// <summary>
/// Internal call method to actually perform the Pyro method call and process the result.
/// </summary>
private object internal_call(string method, string actual_objectId, ushort flags, bool checkMethodName, params object[] parameters)
{
actual_objectId = actual_objectId ?? this.objectid;
lock(this) {
connect();
unchecked {
sequenceNr++; // unchecked so this ushort wraps around 0-65535 instead of raising an OverflowException
}
}
if(pyroAttrs.Contains(method)) {
throw new PyroException("cannot call an attribute");
}
if(pyroOneway.Contains(method)) {
flags |= Message.FLAGS_ONEWAY;
}
if(checkMethodName && Config.METADATA && !pyroMethods.Contains(method)) {
throw new PyroException(string.Format("remote object '{0}' has no exposed attribute or method '{1}'", actual_objectId, method));
}
if (parameters == null)
parameters = new object[] {};
PyroSerializer ser = PyroSerializer.GetFor(Config.SERIALIZER);
byte[] pickle = ser.serializeCall(actual_objectId, method, parameters, new Dictionary<string,object>(0));
var msg = new Message(Message.MSG_INVOKE, pickle, ser.serializer_id, flags, sequenceNr, this.annotations(), pyroHmacKey);
Message resultmsg;
lock (this.sock) {
IOUtil.send(sock_stream, msg.to_bytes());
if(Config.MSG_TRACE_DIR!=null) {
Message.TraceMessageSend(sequenceNr, msg.get_header_bytes(), msg.get_annotations_bytes(), msg.data);
}
pickle = null;
if ((flags & Message.FLAGS_ONEWAY) != 0)
return null;
resultmsg = Message.recv(sock_stream, new ushort[]{Message.MSG_RESULT}, pyroHmacKey);
}
if (resultmsg.seq != sequenceNr) {
throw new PyroException("result msg out of sync");
}
responseAnnotations(resultmsg.annotations, resultmsg.type);
if ((resultmsg.flags & Message.FLAGS_COMPRESSED) != 0) {
_decompressMessageData(resultmsg);
}
if ((resultmsg.flags & Message.FLAGS_EXCEPTION) != 0) {
Exception rx = (Exception) ser.deserializeData(resultmsg.data);
if (rx is PyroException) {
throw (PyroException) rx;
} else {
PyroException px = new PyroException("remote exception occurred", rx);
PropertyInfo remotetbProperty=rx.GetType().GetProperty("_pyroTraceback");
if(remotetbProperty!=null) {
string remotetb=(string)remotetbProperty.GetValue(rx,null);
px._pyroTraceback=remotetb;
}
throw px;
}
}
return ser.deserializeData(resultmsg.data);
}
public void testMessageHeaderDatasize()
{
var msg = new Message(Message.MSG_RESULT, Encoding.ASCII.GetBytes("hello"), 12345, 60006, 30003, null);
msg.data_size = 0x12345678; // hack it to a large value to see if it comes back ok
byte[] hdr = msg.to_bytes().Take(Message.HEADER_SIZE).ToArray();
msg = Message.from_header(hdr);
Assert.AreEqual(Message.MSG_RESULT, msg.type);
Assert.AreEqual(60006, msg.flags);
Assert.AreEqual(0x12345678, msg.data_size);
Assert.AreEqual(12345, msg.serializer_id);
Assert.AreEqual(30003, msg.seq);
}
/**
* Receive a message from the connection. If you set requiredMsgType to the required
* message type id instead of zero, it will check the incoming message type and
* raise a PyroException if they don't match.
*/
public static Message getMessage(Stream connection, int requiredMsgType)
{
byte[] headerdata=IOUtil.recv(connection, HEADER_SIZE);
MessageHeader header=parseMessageHeader(headerdata);
if(requiredMsgType!=0 && header.type!=requiredMsgType) {
throw new PyroException("invalid msg type received: "+header.type);
}
byte[] data=IOUtil.recv(connection, header.datasize);
if(Config.MSG_TRACE_DIR!=null) {
TraceMessageRecv(header.sequence, headerdata, data);
}
if(((header.flags&FLAGS_HMAC) != 0) && (Config.HMAC_KEY!=null)) {
if(header.hmac!=makeHMAC(data)) {
throw new PyroException("message hmac mismatch");
}
} else if(((header.flags&FLAGS_HMAC) != 0) != (Config.HMAC_KEY!=null)) {
throw new PyroException("hmac key config not symmetric");
}
Message msg=new Message();
msg.type=header.type;
msg.flags=header.flags;
msg.sequence=header.sequence;
msg.data=data;
return msg;
}
public void testHmac()
{
Stream c;
byte[] data;
data = new Message(Message.MSG_RESULT, new byte[]{1,2,3,4,5}, 42, 0, 1, null, Encoding.UTF8.GetBytes("secret")).to_bytes();
c = new MemoryStream(data);
// test checking of different hmacs
try {
Message.recv(c, null, Encoding.UTF8.GetBytes("wrong"));
Assert.Fail("crash expected");
}
catch(PyroException x) {
Assert.IsTrue(x.Message.Contains("hmac"));
}
c = new MemoryStream(data);
// test that it works again when resetting the key
Message.recv(c, null, Encoding.UTF8.GetBytes("secret"));
c = new MemoryStream(data);
// test that it doesn't work when no key is set
try {
Message.recv(c, null, null);
Assert.Fail("crash expected");
}
catch(PyroException x) {
Assert.IsTrue(x.Message.Contains("hmac key config"));
}
}