m_spanningtree Add channel timestamp to FTOPIC in protocol version 1204

Fixes issue #148

1 files changed, 18 insertions, 0 deletions

diff --git a/src/modules/m_spanningtree/compat.cpp b/src/modules/m_spanningtree/compat.cpp
index f04b69e8f..a7c46cdc6 100644
--- a/src/modules/m_spanningtree/compat.cpp
+++ b/src/modules/m_spanningtree/compat.cpp
@@ -229,6 +229,24 @@ void TreeSocket::WriteLine(std::string line)
 				line.erase(c, d-c);
 			}
 		}
+		else if (proto_version < 1204 && command == "FTOPIC")
+		{
+			// Drop channel TS for FTOPIC
+			// :sid FTOPIC #target TS TopicTS ...
+			//     A      B       C  D
+			if (b == std::string::npos)
+				return;
+			std::string::size_type c = line.find(' ', b + 1);
+			if (c == std::string::npos)
+				return;
+
+			std::string::size_type d = line.find(' ', c + 1);
+			if (d == std::string::npos)
+				return;
+
+			ServerInstance->Logs->Log("m_spanningtree", DEBUG, "Stripping channel TS in FTOPIC for pre-1204-protocol server");
+			line.erase(c, d-c);
+		}
 	}
 
 	ServerInstance->Logs->Log("m_spanningtree", RAWIO, "S[%d] O %s", this->GetFd(), line.c_str());