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7b240d5330
freenode now also allows using CAP to request the identify-msg capability. Plus point is that one can also disable it via this interface (CAP REQ :-identify-msg), but we still don't want any client to enable it at all. git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@2016 726aef4b-f618-498e-8847-2d620e286838
94 lines
2.5 KiB
C++
94 lines
2.5 KiB
C++
/*
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* Copyright (C) 2004-2010 See the AUTHORS file for details.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*/
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#include "Modules.h"
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#include "User.h"
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class CPreventIdMsgMod : public CModule {
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public:
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MODCONSTRUCTOR(CPreventIdMsgMod) {}
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/* Old style:
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* -> CAPAB :identify-msg
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* We just block this request from the client.
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*
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* New style:
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* -> CAP LS
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* <- :farmer.freenode.net CAP <nick> LS :identify-msg <other stuff>
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* -> CAP REQ :identify-msg
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* <- :farmer.freenode.net CAP a ACK :identify-msg
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* We block the identify-msg token from CAP LS and CAP REQ,
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* just to be sure.
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*/
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// Returns true if an "identify-msg" was skipped
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static bool MakeCleanCapList(CString& sList) {
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bool bRet = false;
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VCString vsList;
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sList.Split(" ", vsList);
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sList = "";
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// Append each token to the output list
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for (VCString::const_iterator it = vsList.begin();
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it != vsList.end(); ++it) {
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if (!it->Equals("identify-msg")) {
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sList += *it + " ";
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} else {
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bRet = true;
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}
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}
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// Remove the last space we added
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sList.RightChomp();
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return bRet;
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}
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virtual EModRet OnUserRaw(CString& sLine) {
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if (sLine.Token(0).Equals("CAPAB")) {
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if (sLine.AsLower().find("identify-msg") != CString::npos
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|| sLine.AsLower().find("identify-ctcp") != CString::npos)
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return HALTCORE;
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} else if (sLine.Token(0).Equals("CAP")) {
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if (sLine.Token(1).Equals("REQ")) {
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CString sList = sLine.Token(2, true).TrimPrefix_n(":");
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if (MakeCleanCapList(sList)) {
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// There was an identify-msg requested,
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// block the whole list
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PutUser(":irc.znc.in CAP " + m_pUser->GetIRCNick().GetNick()
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+ " NAK " + sLine.Token(2, true));
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return HALTCORE;
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}
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}
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}
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return CONTINUE;
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}
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virtual EModRet OnRaw(CString& sLine) {
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if (!sLine.Token(1).Equals("CAP"))
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return CONTINUE;
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if (!sLine.Token(3).Equals("LS"))
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return CONTINUE;
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// It's CAP LS, strip identify-msg
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// First, copy over the "prefix" from the old line
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CString sNewLine = sLine.Token(0) + " " + sLine.Token(1) + " ";
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sNewLine += sLine.Token(2) + " " + sLine.Token(3) + " :";
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// Grab the list of CAP tokens and clean them up
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CString sTokens = sLine.Token(4, true).TrimPrefix_n(":");
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MakeCleanCapList(sTokens);
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sLine = sNewLine + sTokens;
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return CONTINUE;
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}
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};
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MODULEDEFS(CPreventIdMsgMod, "Prevent client from sending IDENTIFY-MSG to server")
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