Add user/channel mode synchronisation detection to CAPAB - link will now drop if modes differ in some way (one side requires param, other doesn't, etc). Same for user modes.

This will not affect services. Side effect: Modes::ChanModes() -> Modes::GiveModeList(ModeMasks), mode list is formatted
identically for both MASK_CHANNEL and MASK_USER.


git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@10733 e03df62e-2008-0410-955e-edbf42e46eb7

3 files changed, 14 insertions, 4 deletions

diff --git a/src/mode.cpp b/src/mode.cpp
index bdec78737..a5549a964 100644
--- a/src/mode.cpp
+++ b/src/mode.cpp
@@ -1010,7 +1010,7 @@ std::string ModeParser::ModeString(User* user, Channel* channel, bool nick_suffi
 		return types;
 }
 
-std::string ModeParser::ChanModes()
+std::string ModeParser::GiveModeList(ModeMasks m)
 {
 	std::string type1;	/* Listmodes EXCEPT those with a prefix */
 	std::string type2;	/* Modes that take a param when adding or removing */
@@ -1022,7 +1022,7 @@ std::string ModeParser::ChanModes()
 		if ((!ServerInstance->Config->AllowHalfop) && (mode == 'h'))
 			continue;
 
-		unsigned char pos = (mode-65) | MASK_CHANNEL;
+		unsigned char pos = (mode-65) | m;
 		 /* One parameter when adding */
 		if (modehandlers[pos])
 		{	
diff --git a/src/modules/m_spanningtree/capab.cpp b/src/modules/m_spanningtree/capab.cpp
index 8b02b9545..e8fe75177 100644
--- a/src/modules/m_spanningtree/capab.cpp
+++ b/src/modules/m_spanningtree/capab.cpp
@@ -95,7 +95,8 @@ void TreeSocket::SendCapabilities()
 			" IP6SUPPORT="+ConvToStr(ip6support)+
 			" PROTOCOL="+ConvToStr(ProtocolVersion)+extra+
 			" PREFIX="+ServerInstance->Modes->BuildPrefixes()+
-			" CHANMODES="+ServerInstance->Modes->ChanModes()+
+			" CHANMODES="+ServerInstance->Modes->GiveModeList(MASK_CHANNEL)+
+			" USERMODES="+ServerInstance->Modes->GiveModeList(MASK_USER)+
 			" SVSPART=1");
 
 	this->WriteLine("CAPAB END");
@@ -186,9 +187,18 @@ bool TreeSocket::Capab(const std::deque<std::string> &params)
 		if(this->CapKeys.find("PREFIX") != this->CapKeys.end() && this->CapKeys.find("PREFIX")->second != this->ServerInstance->Modes->BuildPrefixes())
 			reason = "One or more of the prefixes on the remote server are invalid on this server.";
 
+		if(this->CapKeys.find("CHANMODES") != this->CapKeys.end() && this->CapKeys.find("CHANMODES")->second != this->ServerInstance->Modes->GiveModeList(MASK_CHANNEL))
+			reason = "One or more of the channel modes on the remote server are invalid on this server.";
+
+		if(this->CapKeys.find("USERMODES") != this->CapKeys.end() && this->CapKeys.find("USERMODES")->second != this->ServerInstance->Modes->GiveModeList(MASK_USER))
+			reason = "One or more of the user modes on the remote server are invalid on this server.";
+
+
 		if (((this->CapKeys.find("HALFOP") == this->CapKeys.end()) && (ServerInstance->Config->AllowHalfop)) || ((this->CapKeys.find("HALFOP") != this->CapKeys.end()) && (this->CapKeys.find("HALFOP")->second != ConvToStr(ServerInstance->Config->AllowHalfop))))
 			reason = "We don't both have halfop support enabled/disabled identically";
 
+
+
 		/* Challenge response, store their challenge for our password */
 		std::map<std::string,std::string>::iterator n = this->CapKeys.find("CHALLENGE");
 		if (Utils->ChallengeResponse && (n != this->CapKeys.end()) && (ServerInstance->Modules->Find("m_sha256.so")))
diff --git a/src/server.cpp b/src/server.cpp
index 8879e1eb8..c3efc7e6b 100644
--- a/src/server.cpp
+++ b/src/server.cpp
@@ -86,7 +86,7 @@ void InspIRCd::BuildISupport()
 	std::stringstream v;
 	v << "WALLCHOPS WALLVOICES MODES=" << Config->Limits.MaxModes << " CHANTYPES=# PREFIX=" << this->Modes->BuildPrefixes() << " MAP MAXCHANNELS=" << Config->MaxChans << " MAXBANS=60 VBANLIST NICKLEN=" << Config->Limits.NickMax;
 	v << " CASEMAPPING=rfc1459 STATUSMSG=@" << (this->Config->AllowHalfop ? "%" : "") << "+ CHARSET=ascii TOPICLEN=" << Config->Limits.MaxTopic << " KICKLEN=" << Config->Limits.MaxKick << " MAXTARGETS=" << Config->MaxTargets;
-	v << " AWAYLEN=" << Config->Limits.MaxAway << " CHANMODES=" << this->Modes->ChanModes() << " FNC NETWORK=" << Config->Network << " MAXPARA=32 ELIST=MU";
+	v << " AWAYLEN=" << Config->Limits.MaxAway << " CHANMODES=" << this->Modes->GiveModeList(MASK_CHANNEL) << " FNC NETWORK=" << Config->Network << " MAXPARA=32 ELIST=MU";
 	Config->data005 = v.str();
 	FOREACH_MOD_I(this,I_On005Numeric,On005Numeric(Config->data005));
 	Config->Update005();