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cgiirc.cpp
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cgiirc.cpp
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/*
* Copyright (C) 2015 Ashley "you10" Lavery ashley@you10.co.uk
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <znc/Client.h>
#include <znc/IRCNetwork.h>
#include <znc/Modules.h>
#include <znc/User.h>
using std::vector;
#ifndef HOSTNAME_IS_ALPHA
#define HOSTNAME_IS_ALPHA(c) (((*c >= 'A') && (*c <= 'Z')) || ((*c >= 'a') && (*c <= 'z')))
#endif
#ifndef HOSTNAME_IS_NUM
#define HOSTNAME_IS_NUM(c) ((*c >= '0') && (*c <= '9'))
#endif
#define CGIIRC_HOSTNAME_SUFFIX ".sa-irc.bnc"
class CCgiIrcMod : public CModule {
public:
MODCONSTRUCTOR(CCgiIrcMod) {}
virtual ~CCgiIrcMod() {}
virtual bool OnLoad(const CString& sArgs, CString& sMessage) {
MCString::iterator it1;
// Load saved settings
for (it1 = BeginNV(); it1 != EndNV(); ++it1) {
SetNV(it1->first, it1->second);
}
if (!sArgs.empty()) {
SetNV("Password", sArgs);
}
return true;
}
virtual void OnClientLogin() {
SetNV("IP_" + m_pUser->GetUserName(), m_pClient->GetRemoteIP());
}
virtual EModRet OnDeleteNetwork(CIRCNetwork& Network) {
DelNV("Enabled_" + Network.GetUser()->GetUserName() + "/" + Network.GetName());
return CONTINUE;
}
virtual EModRet OnDeleteUser(CUser& User) {
DelNV("IP_" + User.GetUserName());
const vector<CIRCNetwork*>& networks = User.GetNetworks();
for (vector<CIRCNetwork*>::const_iterator network = networks.begin(); network != networks.end(); ++network) {
DelNV("Enabled_" + User.GetUserName() + "/" + (*network)->GetName());
}
return CONTINUE;
}
virtual EModRet OnIRCRegistration(CString& sPass, CString& sNick, CString& sIdent, CString& sRealName) {
CString sUserIP = GetNV("IP_" + m_pUser->GetUserName());
CString sCGIPass = GetNV("Password");
if(IsEnabled(m_pUser->GetUserName(), m_pNetwork->GetName()) && !sUserIP.empty() && !sCGIPass.empty()) {
PutIRC("WEBIRC " + sCGIPass + " ZNC " + CleanHostname(m_pUser->GetCleanUserName()) + CGIIRC_HOSTNAME_SUFFIX + " 0.0.0.0");
}
return CONTINUE;
}
bool OnEmbeddedWebRequest(CWebSock& WebSock, const CString& sPageName, CTemplate& Tmpl) {
if (sPageName == "webadmin/network" && WebSock.GetSession()->IsAdmin()) {
CString sAction = Tmpl["WebadminAction"];
CIRCNetwork* pNetwork = SafeGetNetworkFromParam(WebSock);
if(pNetwork) {
if (sAction == "display") {
Tmpl["CGIEnabled"] = CString(IsEnabled(Tmpl["Username"], pNetwork->GetName()));
return true;
}
if (sAction == "change" && WebSock.GetParam("embed_cgiirc_presented").ToBool()) {
if (WebSock.GetParam("embed_cgiirc_enable").ToBool()) {
if (!WebSock.GetParam("embed_cgiirc_old").ToBool()) {
if (Enable(Tmpl["Username"], pNetwork)) {
WebSock.GetSession()->AddSuccess("CGI:IRC Enabled [" + Tmpl["Username"] + "/" + pNetwork->GetName() + "]");
} else {
WebSock.GetSession()->AddError("Couldn't enable CGI:IRC [" + Tmpl["Username"] + "/" + pNetwork->GetName() + "]");
}
}
} else if (WebSock.GetParam("embed_cgiirc_old").ToBool()){
if (DelNV("Enabled_" + Tmpl["Username"] + "/" + pNetwork->GetName())) {
WebSock.GetSession()->AddSuccess("CGI:IRC Disabled [" + Tmpl["Username"] + "/" + pNetwork->GetName() + "]");
} else {
WebSock.GetSession()->AddError("User [" + Tmpl["Username"] + "/" + pNetwork->GetName() + "] does not have CGI:IRC enabled");
}
}
return true;
}
}
}
return false;
}
private:
/*********************************************/
/* Borrowed from webadmin.cpp */
/*********************************************/
CString SafeGetUserNameParam(CWebSock& WebSock) {
CString sUserName = WebSock.GetParam("user"); // check for POST param
if(sUserName.empty() && !WebSock.IsPost()) {
// if no POST param named user has been given and we are not
// saving this form, fall back to using the GET parameter.
sUserName = WebSock.GetParam("user", false);
}
return sUserName;
}
CString SafeGetNetworkParam(CWebSock& WebSock) {
CString sNetwork = WebSock.GetParam("network"); // check for POST param
if(sNetwork.empty() && !WebSock.IsPost()) {
// if no POST param named user has been given and we are not
// saving this form, fall back to using the GET parameter.
sNetwork = WebSock.GetParam("network", false);
}
return sNetwork;
}
CIRCNetwork* SafeGetNetworkFromParam(CWebSock& WebSock) {
CUser* pUser = CZNC::Get().FindUser(SafeGetUserNameParam(WebSock));
CIRCNetwork* pNetwork = NULL;
if (pUser) {
pNetwork = pUser->FindNetwork(SafeGetNetworkParam(WebSock));
}
return pNetwork;
}
/*********************************************/
/*********************************************/
/* Borrowed from CGI::IRC Spoofing */
/* Module for ZNC */
/* (c) 2009 N Lum <nol888@gmail.com */
/*********************************************/
CString CleanHostname(const CString unclean) {
CString clean;
const char* chararray = unclean.c_str();
while(*chararray) {
if(HOSTNAME_IS_ALPHA(chararray) || HOSTNAME_IS_NUM(chararray) || (*chararray == '-')) {
clean += CString(*chararray);
} else {
clean += "-";
}
chararray++;
}
return clean;
}
/*********************************************/
bool IsEnabled(const CString& sUser, const CString& sNetwork) {
MCString::iterator it;
for (it = BeginNV(); it != EndNV(); ++it) {
if ("Enabled_" + sUser + "/" + sNetwork == it->first) {
return true;
}
}
return false;
}
bool Enable(const CString& sUser, CIRCNetwork* pNetwork) {
CUser *pUser = CZNC::Get().FindUser(sUser);
if (!pUser || !pNetwork)
return false;
SetNV("Enabled_" + pUser->GetUserName() + "/" + pNetwork->GetName(), "");
return true;
}
};
template<> void TModInfo<CCgiIrcMod>(CModInfo& Info) {
Info.SetHasArgs(true);
Info.SetArgsHelpText("Password for CGI:IRC.");
}
GLOBALMODULEDEFS(CCgiIrcMod, "Provide dynamic IP spoofing to assist with user accountability.")