public void ToggleSignal (string iface, string member, Delegate dlg, bool adding)
{
MatchRule rule = new MatchRule ();
rule.MessageType = MessageType.Signal;
rule.Interface = iface;
rule.Member = member;
rule.Path = object_path;
if (adding) {
if (conn.Handlers.ContainsKey (rule))
conn.Handlers[rule] = Delegate.Combine (conn.Handlers[rule], dlg);
else {
conn.Handlers[rule] = dlg;
conn.AddMatch (rule.ToString ());
}
} else {
conn.Handlers[rule] = Delegate.Remove (conn.Handlers[rule], dlg);
if (conn.Handlers[rule] == null) {
conn.RemoveMatch (rule.ToString ());
conn.Handlers.Remove (rule);
}
}
}
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];
MatchRule rule = new MatchRule();
rule.MessageType = MessageType.Signal;
rule.Interface = Mapper.GetInterfaceName(mi);
rule.Member = ename;
rule.Path = object_path;
if (parts[0] == "add")
{
if (conn.Handlers.ContainsKey(rule))
{
conn.Handlers[rule] = Delegate.Combine(conn.Handlers[rule], dlg);
}
else
{
conn.Handlers[rule] = dlg;
conn.AddMatch(rule.ToString());
}
}
else if (parts[0] == "remove")
{
conn.Handlers[rule] = Delegate.Remove(conn.Handlers[rule], dlg);
if (conn.Handlers[rule] == null)
{
conn.RemoveMatch(rule.ToString());
conn.Handlers.Remove(rule);
}
}
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);
reader.GetValue(out errMsg);
}
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;
}
//this could be made more efficient
public static MatchRule Parse (string text)
{
MatchRule r = new MatchRule ();
foreach (string propStr in text.Split (',')) {
string[] parts = propStr.Split ('=');
if (parts.Length < 2)
throw new Exception ("No equals sign found");
if (parts.Length > 2)
throw new Exception ("Too many equals signs found");
string key = parts[0].Trim ();
string value = parts[1].Trim ();
if (!value.StartsWith ("'") || !value.EndsWith ("'"))
throw new Exception ("Too many equals signs found");
value = value.Substring (1, value.Length - 2);
if (key.StartsWith ("arg")) {
int argnum = Int32.Parse (key.Remove (0, "arg".Length));
if (argnum < 0 || argnum > 63)
throw new Exception ("arg match must be between 0 and 63 inclusive");
if (r.Args.ContainsKey (argnum))
return null;
r.Args[argnum] = value;
continue;
}
//TODO: more consistent error handling
switch (key) {
case "type":
if (r.MessageType != null)
return null;
r.MessageType = MessageFilter.StringToMessageType (value);
break;
case "interface":
if (r.Interface != null)
return null;
r.Interface = value;
break;
case "member":
if (r.Member != null)
return null;
r.Member = value;
break;
case "path":
if (r.Path != null)
return null;
r.Path = new ObjectPath (value);
break;
case "sender":
if (r.Sender != null)
return null;
r.Sender = value;
break;
case "destination":
if (r.Destination != null)
return null;
r.Destination = value;
break;
default:
if (Protocol.Verbose)
Console.Error.WriteLine ("Warning: Unrecognized match rule key: " + key);
break;
}
}
return r;
}
//this could be made more efficient
public static MatchRule Parse(string text)
{
MatchRule r = new MatchRule();
foreach (string propStr in text.Split(','))
{
string[] parts = propStr.Split('=');
if (parts.Length < 2)
{
throw new Exception("No equals sign found");
}
if (parts.Length > 2)
{
throw new Exception("Too many equals signs found");
}
string key = parts[0].Trim();
string value = parts[1].Trim();
if (!value.StartsWith("'") || !value.EndsWith("'"))
{
throw new Exception("Too many equals signs found");
}
value = value.Substring(1, value.Length - 2);
if (key.StartsWith("arg"))
{
int argnum = Int32.Parse(key.Remove(0, "arg".Length));
if (argnum < 0 || argnum > 63)
{
throw new Exception("arg match must be between 0 and 63 inclusive");
}
if (r.Args.ContainsKey(argnum))
{
return(null);
}
r.Args[argnum] = value;
continue;
}
//TODO: more consistent error handling
switch (key)
{
case "type":
if (r.MessageType != null)
{
return(null);
}
r.MessageType = MessageFilter.StringToMessageType(value);
break;
case "interface":
if (r.Interface != null)
{
return(null);
}
r.Interface = value;
break;
case "member":
if (r.Member != null)
{
return(null);
}
r.Member = value;
break;
case "path":
if (r.Path != null)
{
return(null);
}
r.Path = new ObjectPath(value);
break;
case "sender":
if (r.Sender != null)
{
return(null);
}
r.Sender = value;
break;
case "destination":
if (r.Destination != null)
{
return(null);
}
r.Destination = value;
break;
default:
if (Protocol.Verbose)
{
Console.Error.WriteLine("Warning: Unrecognized match rule key: " + key);
}
break;
}
}
return(r);
}
//this might need reworking with MulticastDelegate
internal void HandleSignal(Message msg)
{
Signal signal = new Signal(msg);
//TODO: this is a hack, not necessary when MatchRule is complete
MatchRule rule = new MatchRule();
rule.MessageType = MessageType.Signal;
rule.Fields.Add(FieldCode.Interface, new MatchTest(signal.Interface));
rule.Fields.Add(FieldCode.Member, new MatchTest(signal.Member));
rule.Fields.Add(FieldCode.Path, new MatchTest(signal.Path));
Delegate dlg;
if (Handlers.TryGetValue(rule, out dlg))
{
MethodInfo mi = dlg.GetType().GetMethod("Invoke");
bool compatible = false;
Signature inSig, outSig;
if (TypeImplementer.SigsForMethod(mi, out inSig, out outSig))
{
if (outSig == Signature.Empty && inSig == msg.Signature)
{
compatible = true;
}
}
if (!compatible)
{
if (Protocol.Verbose)
{
Console.Error.WriteLine("Signal argument mismatch: " + signal.Interface + '.' + signal.Member);
}
return;
}
try
{
//signals have no return value
dlg.DynamicInvoke(MessageHelper.GetDynamicValues(msg, mi.GetParameters()));
}
catch (MemberAccessException)
{
throw;
}
catch (TargetInvocationException)
{
if (Protocol.Verbose)
{
Console.Error.WriteLine("Error: Signal handler threw exception " + signal.Member);
}
}
}
else
{
//TODO: how should we handle this condition? sending an Error may not be appropriate in this case
if (Protocol.Verbose)
{
Console.Error.WriteLine("Warning: No signal handler for " + signal.Member);
}
}
}
internal void HandleMessage(Message msg)
{
if (msg == null)
{
return;
}
//List<Connection> recipients = new List<Connection> ();
HashSet <Connection> recipients = new HashSet <Connection> ();
//HashSet<Connection> recipientsAll = new HashSet<Connection> (Connections);
object fieldValue = msg.Header[FieldCode.Destination];
if (fieldValue != null)
{
string destination = (string)fieldValue;
Connection destConn;
if (Names.TryGetValue(destination, out destConn))
{
recipients.Add(destConn);
}
else if (destination != DBusBusName && !destination.StartsWith(":") && (msg.Header.Flags & HeaderFlag.NoAutoStart) != HeaderFlag.NoAutoStart)
{
// Attempt activation
StartProcessNamed(destination);
//Thread.Sleep (5000);
// TODO: Route the message to the newly activated service!
activationMessages[destination] = msg;
//if (Names.TryGetValue (destination, out destConn))
// recipients.Add (destConn);
//else
// Console.Error.WriteLine ("Couldn't route message to activated service");
}
else if (destination != DBusBusName)
{
// Send an error when there's no hope of getting the requested reply
if (msg.ReplyExpected)
{
// Error org.freedesktop.DBus.Error.ServiceUnknown: The name {0} was not provided by any .service files
Message rmsg = MessageHelper.CreateUnknownMethodError(new MethodCall(msg));
if (rmsg != null)
{
//Caller.Send (rmsg);
Caller.SendReal(rmsg);
return;
}
}
}
}
HashSet <Connection> recipientsMatchingHeader = new HashSet <Connection> ();
HashSet <ArgMatchTest> a = new HashSet <ArgMatchTest> ();
foreach (KeyValuePair <MatchRule, List <Connection> > pair in Rules)
{
if (recipients.IsSupersetOf(pair.Value))
{
continue;
}
if (pair.Key.MatchesHeader(msg))
{
a.UnionWith(pair.Key.Args);
recipientsMatchingHeader.UnionWith(pair.Value);
}
}
MatchRule.Test(a, msg);
foreach (KeyValuePair <MatchRule, List <Connection> > pair in Rules)
{
if (recipients.IsSupersetOf(pair.Value))
{
continue;
}
if (!recipientsMatchingHeader.IsSupersetOf(pair.Value))
{
continue;
}
if (a.IsSupersetOf(pair.Key.Args))
{
recipients.UnionWith(pair.Value);
}
}
foreach (Connection conn in recipients)
{
// TODO: rewrite/don't header fields
//conn.Send (msg);
// TODO: Zero the Serial or not?
//msg.Header.Serial = 0;
((ServerConnection)conn).SendReal(msg);
}
}
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];
MatchRule rule = new MatchRule ();
rule.MessageType = MessageType.Signal;
rule.Interface = Mapper.GetInterfaceName (mi);
rule.Member = ename;
rule.Path = object_path;
if (parts[0] == "add") {
if (conn.Handlers.ContainsKey (rule))
conn.Handlers[rule] = Delegate.Combine (conn.Handlers[rule], dlg);
else {
conn.Handlers[rule] = dlg;
conn.AddMatch (rule.ToString ());
}
} else if (parts[0] == "remove") {
conn.Handlers[rule] = Delegate.Remove (conn.Handlers[rule], dlg);
if (conn.Handlers[rule] == null) {
conn.RemoveMatch (rule.ToString ());
conn.Handlers.Remove (rule);
}
}
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);
reader.GetValue (out errMsg);
}
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;
}
public static MatchRule Parse(string text)
{
if (text.Length > Protocol.MaxMatchRuleLength)
{
throw new Exception("Match rule length exceeds maximum " + Protocol.MaxMatchRuleLength + " characters");
}
MatchRule r = new MatchRule();
// TODO: Stricter validation. Tighten up the regex.
// It currently succeeds and silently drops malformed test parts.
for (Match m = matchRuleRegex.Match(text); m.Success; m = m.NextMatch())
{
string key = m.Groups[1].Value;
string value = m.Groups[2].Value;
// This unescaping may not be perfect..
value = value.Replace(@"\\", @"\");
value = value.Replace(@"\'", @"'");
if (key.StartsWith("arg"))
{
Match mArg = argNRegex.Match(key);
if (!mArg.Success)
{
return(null);
}
int argNum = (int)UInt32.Parse(mArg.Groups[1].Value);
if (argNum < 0 || argNum >= Protocol.MaxMatchRuleArgs)
{
throw new Exception("arg match must be between 0 and " + (Protocol.MaxMatchRuleArgs - 1) + " inclusive");
}
//if (r.Args.ContainsKey (argNum))
// return null;
string argType = mArg.Groups[2].Value;
if (argType == "path")
{
r.Args.Add(new ArgMatchTest(argNum, new ObjectPath(value)));
}
else
{
r.Args.Add(new ArgMatchTest(argNum, value));
}
continue;
}
//TODO: more consistent error handling
switch (key)
{
case "type":
if (r.MessageType != null)
{
return(null);
}
r.MessageType = MessageFilter.StringToMessageType(value);
break;
case "interface":
r.Fields[FieldCode.Interface] = new MatchTest(value);
break;
case "member":
r.Fields[FieldCode.Member] = new MatchTest(value);
break;
case "path":
r.Fields[FieldCode.Path] = new MatchTest(new ObjectPath(value));
break;
case "sender":
r.Fields[FieldCode.Sender] = new MatchTest(value);
break;
case "destination":
r.Fields[FieldCode.Destination] = new MatchTest(value);
break;
default:
if (Protocol.Verbose)
{
Console.Error.WriteLine("Warning: Unrecognized match rule key: " + key);
}
break;
}
}
return(r);
}
public static MatchRule Parse(string text)
{
if (text.Length > Protocol.MaxMatchRuleLength)
throw new Exception ("Match rule length exceeds maximum " + Protocol.MaxMatchRuleLength + " characters");
MatchRule r = new MatchRule ();
// TODO: Stricter validation. Tighten up the regex.
// It currently succeeds and silently drops malformed test parts.
for (Match m = matchRuleRegex.Match (text) ; m.Success ; m = m.NextMatch ()) {
string key = m.Groups[1].Value;
string value = m.Groups[2].Value;
// This unescaping may not be perfect..
value = value.Replace (@"\\", @"\");
value = value.Replace (@"\'", @"'");
if (key.StartsWith ("arg")) {
Match mArg = argNRegex.Match (key);
if (!mArg.Success)
return null;
int argNum = (int)UInt32.Parse (mArg.Groups[1].Value);
if (argNum < 0 || argNum >= Protocol.MaxMatchRuleArgs)
throw new Exception ("arg match must be between 0 and " + (Protocol.MaxMatchRuleArgs - 1) + " inclusive");
//if (r.Args.ContainsKey (argNum))
// return null;
string argType = mArg.Groups[2].Value;
if (argType == "path")
r.Args.Add (new ArgMatchTest (argNum, new ObjectPath (value)));
else
r.Args.Add (new ArgMatchTest (argNum, value));
continue;
}
//TODO: more consistent error handling
switch (key) {
case "type":
if (r.MessageType != null)
return null;
r.MessageType = MessageFilter.StringToMessageType (value);
break;
case "interface":
r.Fields[FieldCode.Interface] = new MatchTest (value);
break;
case "member":
r.Fields[FieldCode.Member] = new MatchTest (value);
break;
case "path":
r.Fields[FieldCode.Path] = new MatchTest (new ObjectPath (value));
break;
case "sender":
r.Fields[FieldCode.Sender] = new MatchTest (value);
break;
case "destination":
r.Fields[FieldCode.Destination] = new MatchTest (value);
break;
default:
if (Protocol.Verbose)
Console.Error.WriteLine ("Warning: Unrecognized match rule key: " + key);
break;
}
}
return r;
}
