Introduce channelcountlimit to limit max channels per server

Having to many channels on a server can impact performance to the point
of making the instance unusably slow. This can be a problem for hosters
that allow their users unlimited channel creation.

This patch introduces a new per-server configuration parameter
channelcountlimit which can be used to configure a maximum number of
channels that may be created on each of the virtual servers. Once the
limit is reached channel creation will be rejected with permission
denied.

To allow a translated error message we have to bump the client version
to 1.3.1 to be able to use a fallback message for older clients.

As usual dbus, ice and grpc can ignore this limit. It is only enforced
against clients.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/murmur/Server.h b/src/murmur/Server.h
index 676473ed7..a7c36f25c 100644
--- a/src/murmur/Server.h
+++ b/src/murmur/Server.h
@@ -171,6 +171,7 @@ class Server : public QThread {
 
 	private:
 		int iChannelNestingLimit;
+		int iChannelCountLimit;
 
 	public slots:
 		void regSslError(const QList<QSslError> &);