//TODO: make use of Locked
/*
protected bool locked = false;
public bool Locked
{
get {
return locked;
}
}
*/
public void SetHeaderData (byte[] data)
{
EndianFlag endianness = (EndianFlag)data[0];
MessageReader reader = new MessageReader (endianness, data);
Header = (Header)reader.ReadStruct (typeof (Header));
}
public void ParseHeader ()
{
//GetValue (stream, typeof (Header), out Header);
EndianFlag endianness = (EndianFlag)HeaderData[0];
MessageReader reader = new MessageReader (endianness, HeaderData);
object valT;
reader.GetValueStruct (typeof (Header), out valT);
Header = (Header)valT;
/*
//foreach (HeaderField field in HeaderFields)
foreach (KeyValuePair<FieldCode,object> field in Header.Fields)
{
//Console.WriteLine (field.Key + " = " + field.Value);
switch (field.Key)
{
case FieldCode.Invalid:
break;
case FieldCode.Path:
Path = (ObjectPath)field.Value;
break;
case FieldCode.Interface:
Interface = (string)field.Value;
break;
case FieldCode.Member:
Member = (string)field.Value;
break;
case FieldCode.ErrorName:
ErrorName = (string)field.Value;
break;
case FieldCode.ReplySerial:
ReplySerial = (uint)field.Value;
break;
case FieldCode.Destination:
Destination = (string)field.Value;
break;
case FieldCode.Sender:
Sender = (string)field.Value;
break;
case FieldCode.Signature:
Signature = (Signature)field.Value;
break;
}
}
*/
}
public virtual void HandleMethodCall(MethodCall method_call)
{
Type type = obj.GetType ();
//object retObj = type.InvokeMember (msg.Member, BindingFlags.InvokeMethod, null, obj, MessageHelper.GetDynamicValues (msg));
//TODO: there is no member name mapping for properties etc. yet
// FIXME: Inefficient to do this on every call
MethodInfo mi = Mapper.GetMethod (type, method_call);
if (mi == null) {
conn.MaybeSendUnknownMethodError (method_call);
return;
}
MethodCaller2 mCaller;
if (!mCallers.TryGetValue (mi, out mCaller)) {
//mCaller = TypeImplementer.GenCaller (mi, obj);
mCaller = TypeImplementer.GenCaller2 (mi);
mCallers[mi] = mCaller;
}
Signature inSig, outSig;
TypeImplementer.SigsForMethod (mi, out inSig, out outSig);
Message msg = method_call.message;
MessageReader msgReader = new MessageReader (method_call.message);
MessageWriter retWriter = new MessageWriter ();
/*
MessageWriter retWriter = null;
if (msg.ReplyExpected)
retWriter = new MessageWriter ();
*/
Exception raisedException = null;
try {
//mCaller (msgReader, method_call.message, retWriter);
mCaller (obj, msgReader, method_call.message, retWriter);
} catch (Exception e) {
raisedException = e;
}
if (!msg.ReplyExpected)
return;
Message replyMsg;
if (raisedException == null) {
MethodReturn method_return = new MethodReturn (msg.Header.Serial);
replyMsg = method_return.message;
replyMsg.Body = retWriter.ToArray ();
replyMsg.Signature = outSig;
} else {
Error error;
// BusException allows precisely formatted Error messages.
BusException busException = raisedException as BusException;
if (busException != null)
error = method_call.CreateError (busException.ErrorName, busException.ErrorMessage);
else if (raisedException is ArgumentException && raisedException.TargetSite.Name == mi.Name) {
// Name match trick above is a hack since we don't have the resolved MethodInfo.
ArgumentException argException = (ArgumentException)raisedException;
using (System.IO.StringReader sr = new System.IO.StringReader (argException.Message)) {
error = method_call.CreateError ("org.freedesktop.DBus.Error.InvalidArgs", sr.ReadLine ());
}
} else
error = method_call.CreateError (Mapper.GetInterfaceName (raisedException.GetType ()), raisedException.Message);
replyMsg = error.message;
}
if (method_call.Sender != null)
replyMsg.Header[FieldCode.Destination] = method_call.Sender;
conn.Send (replyMsg);
}
public static object[] GetDynamicValues (Message msg, Type[] types)
{
//TODO: this validation check should provide better information, eg. message dump or a stack trace, or at least the interface/member
if (Protocol.Verbose) {
Signature expected = Signature.GetSig (types);
Signature actual = msg.Signature;
if (actual != expected)
Console.Error.WriteLine ("Warning: The signature of the message does not match that of the handler: " + "Expected '" + expected + "', got '" + actual + "'");
}
object[] vals = new object[types.Length];
if (msg.Body != null) {
MessageReader reader = new MessageReader (msg);
for (int i = 0 ; i != types.Length ; i++)
vals[i] = reader.ReadValue (types[i]);
}
return vals;
}
public static object[] GetDynamicValues (Message msg, ParameterInfo[] parms)
{
//TODO: this validation check should provide better information, eg. message dump or a stack trace, or at least the interface/member
/*
if (Protocol.Verbose) {
Signature expected = Signature.GetSig (types);
Signature actual = msg.Signature;
if (actual != expected)
Console.Error.WriteLine ("Warning: The signature of the message does not match that of the handler: " + "Expected '" + expected + "', got '" + actual + "'");
}
*/
object[] vals = new object[parms.Length];
if (msg.Body != null) {
MessageReader reader = new MessageReader (msg);
foreach (ParameterInfo parm in parms) {
if (parm.IsOut)
continue;
vals[parm.Position] = reader.ReadValue (parm.ParameterType);
}
}
return vals;
}
public object SendMethodCall (string iface, string member, string inSigStr, MessageWriter writer, Type retType, out Exception exception)
{
exception = null;
//TODO: don't ignore retVal, exception etc.
Signature inSig = String.IsNullOrEmpty (inSigStr) ? Signature.Empty : new Signature (inSigStr);
MethodCall method_call = new MethodCall (object_path, iface, member, bus_name, inSig);
Message callMsg = method_call.message;
callMsg.Body = writer.ToArray ();
//Invoke Code::
//TODO: complete out parameter support
/*
Type[] outParmTypes = Mapper.GetTypes (ArgDirection.Out, mi.GetParameters ());
Signature outParmSig = Signature.GetSig (outParmTypes);
if (outParmSig != Signature.Empty)
throw new Exception ("Out parameters not yet supported: out_signature='" + outParmSig.Value + "'");
*/
Type[] outTypes = new Type[1];
outTypes[0] = retType;
//we default to always requiring replies for now, even though unnecessary
//this is to make sure errors are handled synchronously
//TODO: don't hard code this
bool needsReply = true;
//if (mi.ReturnType == typeof (void))
// needsReply = false;
callMsg.ReplyExpected = needsReply;
callMsg.Signature = inSig;
if (!needsReply) {
conn.Send (callMsg);
return null;
}
#if PROTO_REPLY_SIGNATURE
if (needsReply) {
Signature outSig = Signature.GetSig (outTypes);
callMsg.Header.Fields[FieldCode.ReplySignature] = outSig;
}
#endif
Message retMsg = conn.SendWithReplyAndBlock (callMsg);
object retVal = null;
//handle the reply message
switch (retMsg.Header.MessageType) {
case MessageType.MethodReturn:
object[] retVals = MessageHelper.GetDynamicValues (retMsg, outTypes);
if (retVals.Length != 0)
retVal = retVals[retVals.Length - 1];
break;
case MessageType.Error:
//TODO: typed exceptions
Error error = new Error (retMsg);
string errMsg = String.Empty;
if (retMsg.Signature.Value.StartsWith ("s")) {
MessageReader reader = new MessageReader (retMsg);
errMsg = reader.ReadString ();
}
exception = new Exception (error.ErrorName + ": " + errMsg);
break;
default:
throw new Exception ("Got unexpected message of type " + retMsg.Header.MessageType + " while waiting for a MethodReturn or Error");
}
return retVal;
}
public void Invoke (MethodBase methodBase, string methodName, object[] inArgs, out object[] outArgs, out object retVal, out Exception exception)
{
outArgs = new object[0];
retVal = null;
exception = null;
MethodInfo mi = methodBase as MethodInfo;
if (mi != null && mi.IsSpecialName && (methodName.StartsWith ("add_") || methodName.StartsWith ("remove_"))) {
string[] parts = methodName.Split (new char[]{'_'}, 2);
string ename = parts[1];
Delegate dlg = (Delegate)inArgs[0];
ToggleSignal (Mapper.GetInterfaceName (mi), ename, dlg, parts[0] == "add");
return;
}
Type[] inTypes = Mapper.GetTypes (ArgDirection.In, mi.GetParameters ());
Signature inSig = Signature.GetSig (inTypes);
MethodCall method_call;
Message callMsg;
//build the outbound method call message
{
//this bit is error-prone (no null checking) and will need rewriting when DProxy is replaced
string iface = null;
if (mi != null)
iface = Mapper.GetInterfaceName (mi);
//map property accessors
//TODO: this needs to be done properly, not with simple String.Replace
//note that IsSpecialName is also for event accessors, but we already handled those and returned
if (mi != null && mi.IsSpecialName) {
methodName = methodName.Replace ("get_", "Get");
methodName = methodName.Replace ("set_", "Set");
}
method_call = new MethodCall (object_path, iface, methodName, bus_name, inSig);
callMsg = method_call.message;
if (inArgs != null && inArgs.Length != 0) {
MessageWriter writer = new MessageWriter (Connection.NativeEndianness);
writer.connection = conn;
for (int i = 0 ; i != inTypes.Length ; i++)
writer.Write (inTypes[i], inArgs[i]);
callMsg.Body = writer.ToArray ();
}
}
//TODO: complete out parameter support
/*
Type[] outParmTypes = Mapper.GetTypes (ArgDirection.Out, mi.GetParameters ());
Signature outParmSig = Signature.GetSig (outParmTypes);
if (outParmSig != Signature.Empty)
throw new Exception ("Out parameters not yet supported: out_signature='" + outParmSig.Value + "'");
*/
Type[] outTypes = new Type[1];
outTypes[0] = mi.ReturnType;
//we default to always requiring replies for now, even though unnecessary
//this is to make sure errors are handled synchronously
//TODO: don't hard code this
bool needsReply = true;
//if (mi.ReturnType == typeof (void))
// needsReply = false;
callMsg.ReplyExpected = needsReply;
callMsg.Signature = inSig;
if (!needsReply) {
conn.Send (callMsg);
return;
}
#if PROTO_REPLY_SIGNATURE
if (needsReply) {
Signature outSig = Signature.GetSig (outTypes);
callMsg.Header.Fields[FieldCode.ReplySignature] = outSig;
}
#endif
Message retMsg = conn.SendWithReplyAndBlock (callMsg);
//handle the reply message
switch (retMsg.Header.MessageType) {
case MessageType.MethodReturn:
object[] retVals = MessageHelper.GetDynamicValues (retMsg, outTypes);
if (retVals.Length != 0)
retVal = retVals[retVals.Length - 1];
break;
case MessageType.Error:
//TODO: typed exceptions
Error error = new Error (retMsg);
string errMsg = String.Empty;
if (retMsg.Signature.Value.StartsWith ("s")) {
MessageReader reader = new MessageReader (retMsg);
errMsg = reader.ReadString ();
}
exception = new Exception (error.ErrorName + ": " + errMsg);
break;
default:
throw new Exception ("Got unexpected message of type " + retMsg.Header.MessageType + " while waiting for a MethodReturn or Error");
}
return;
}
private void FetchUiaDbusNames ()
{
var busNames = new List<string> ();
IBus ibus = Bus.Session.GetObject<IBus> (DBusName,
new ObjectPath (DBusPath));
// Look for buses that contain DCI.IApplication
foreach (string busName in ibus.ListNames ()) {
// Reading introspection data hangs on some buses
// for unknown reasons, so we call Introspect
// asynchronously. Note that we are using
// internal dbus-sharp classes. The old
// behavior was to spin off threads, but this
// triggers a Mono bug on Fedora
// (BNC#628639/632133)
ObjectPath op = new ObjectPath (DC.Constants.ApplicationPath);
MethodCall methodCall = new MethodCall (op,
"org.freedesktop.DBus.Introspectable",
"Introspect", busName, Signature.Empty);
PendingCall pendingCall = Bus.Session.SendWithReply (methodCall.message);
pendingCall.Completed += (message) => {
MessageReader reader = new MessageReader (message);
string data = reader.ReadString ();
if (data.Contains (DC.Constants.ApplicationInterfaceName))
busNames.Add ((string)message.Header [FieldCode.Sender]);
};
}
Thread.Sleep (1000);
lock (uiaDbusNamesLock)
uiaDbusNames = busNames;
}
public static object[] GetDynamicValues (Message msg, Type[] types)
{
//TODO: this validation check should provide better information, eg. message dump or a stack trace
if (Protocol.Verbose) {
if (Signature.GetSig (types) != msg.Signature)
Console.Error.WriteLine ("Warning: The signature of the message does not match that of the handler");
}
object[] vals = new object[types.Length];
if (msg.Body != null) {
MessageReader reader = new MessageReader (msg);
for (int i = 0 ; i != types.Length ; i++) {
object arg;
reader.GetValue (types[i], out arg);
vals[i] = arg;
}
}
return vals;
}
public static void Test(HashSet<ArgMatchTest> a, Message msg)
{
List<Signature> sigs = new List<Signature> ();
sigs.AddRange (msg.Signature.GetParts ());
if (sigs.Count == 0) {
a.Clear ();
return;
}
a.RemoveWhere ( delegate (ArgMatchTest t) { return t.ArgNum >= sigs.Count || t.Signature != sigs[t.ArgNum]; } );
// Sorting the list here is not ideal
List<ArgMatchTest> tests = new List<ArgMatchTest> (a);
tests.Sort ( delegate (ArgMatchTest aa, ArgMatchTest bb) { return aa.ArgNum - bb.ArgNum; } );
if (tests.Count == 0) {
a.Clear ();
return;
}
MessageReader reader = new MessageReader (msg);
int argNum = 0;
foreach (ArgMatchTest test in tests) {
if (argNum > test.ArgNum) {
// This test cannot pass because a previous test already did.
// So we already know it will fail without even trying.
// This logic will need to be changed to support wildcards.
a.Remove (test);
continue;
}
while (argNum != test.ArgNum) {
Signature sig = sigs[argNum];
if (!reader.StepOver (sig))
throw new Exception ();
argNum++;
}
// TODO: Avoid re-reading values
int savedPos = reader.pos;
if (!reader.ReadValue (test.Signature[0]).Equals (test.Value)) {
a.Remove (test);
reader.pos = savedPos;
continue;
}
argNum++;
}
}
public void SetHeaderData(byte[] data)
{
EndianFlag endianness = (EndianFlag)data[0];
MessageReader reader = new MessageReader (endianness, data);
MethodCaller2 mCaller = ExportObject.GetMCaller (hHandler);
mCaller (this, reader, null, new MessageWriter ());
}
public object ToType(Type conversionType, IFormatProvider provider)
{
Signature typeSig = Signature.GetSig (conversionType);
if (typeSig != signature)
throw new InvalidCastException ();
MessageReader reader = new MessageReader (endianness, data);
return reader.ReadValue (conversionType);
}