public void ToggleSignal (string iface, string member, Delegate dlg, bool adding)
{
MatchRule rule = new MatchRule ();
rule.MessageType = MessageType.Signal;
rule.Fields.Add (FieldCode.Interface, new MatchTest (iface));
rule.Fields.Add (FieldCode.Member, new MatchTest (member));
rule.Fields.Add (FieldCode.Path, new MatchTest (object_path));
// FIXME: Cause a regression compared to 0.6 as name wasn't matched before
// the problem arises because busname is not used by DBus daemon and
// instead it uses the canonical name of the sender (i.e. similar to ':1.13')
// rule.Fields.Add (FieldCode.Sender, new MatchTest (bus_name));
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 if (conn.Handlers.ContainsKey (rule)) {
conn.Handlers[rule] = Delegate.Remove (conn.Handlers[rule], dlg);
if (conn.Handlers[rule] == null) {
conn.RemoveMatch (rule.ToString ());
conn.Handlers.Remove (rule);
}
}
}
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;
}
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 ToggleSignal(string iface, string member, Delegate dlg, bool adding)
{
MatchRule rule = new MatchRule ();
rule.MessageType = MessageType.Signal;
rule.Fields.Add (FieldCode.Interface, new MatchTest (iface));
rule.Fields.Add (FieldCode.Member, new MatchTest (member));
rule.Fields.Add (FieldCode.Path, new MatchTest (object_path));
rule.Fields.Add (FieldCode.Sender, new MatchTest (alt_bus_name ?? bus_name));
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 if (conn.Handlers.ContainsKey (rule)) {
conn.Handlers[rule] = Delegate.Remove (conn.Handlers[rule], dlg);
if (conn.Handlers[rule] == null) {
conn.RemoveMatch (rule.ToString ());
conn.Handlers.Remove (rule);
}
}
}
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);
}
//this might need reworking with MulticastDelegate
internal void HandleSignal(Message msg)
{
var signal = MessageContainer.FromMessage(msg);
//TODO: this is a hack, not necessary when MatchRule is complete
MatchRule[] rules = new MatchRule[2];
rules[0] = new MatchRule();
rules[0].MessageType = MessageType.Signal;
rules[0].Fields.Add(FieldCode.Interface, new MatchTest(signal.Interface));
rules[0].Fields.Add(FieldCode.Member, new MatchTest(signal.Member));
//rules[0].Fields.Add (FieldCode.Sender, new MatchTest (signal.Sender));
rules[0].Fields.Add(FieldCode.Path, new MatchTest(signal.Path));
rules[1] = new MatchRule();
rules[1].MessageType = MessageType.Signal;
rules[1].Fields.Add(FieldCode.Interface, new MatchTest(signal.Interface));
rules[1].Fields.Add(FieldCode.Member, new MatchTest(signal.Member));
rules[1].Fields.Add(FieldCode.Sender, new MatchTest(signal.Sender));
rules[1].Fields.Add(FieldCode.Path, new MatchTest(signal.Path));
bool handlerFound = false;
foreach (var rule in rules)
{
Delegate dlg;
if (Handlers.TryGetValue(rule, out dlg) && dlg != null)
{
MethodInfo mi = dlg.GetType().GetMethod("Invoke");
bool compatible = false;
Signature inSig, outSig;
bool hasDisposableList;
if (TypeImplementer.SigsForMethod(mi, out inSig, out outSig, out hasDisposableList))
{
if (outSig == Signature.Empty && inSig == msg.Signature && !hasDisposableList)
{
compatible = true;
}
}
if (!compatible)
{
if (ProtocolInformation.Verbose)
{
Console.Error.WriteLine("Signal argument mismatch: " + signal.Interface + '.' + signal.Member);
}
return;
}
//signals have no return value
dlg.DynamicInvoke(MessageHelper.GetDynamicValues(msg, mi.GetParameters()));
handlerFound = true;
}
}
if (!handlerFound)
{
//TODO: how should we handle this condition? sending an Error may not be appropriate in this case
if (ProtocolInformation.Verbose)
{
Console.Error.WriteLine("Warning: No signal handler for " + signal.Member);
}
}
}
