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/*
* Copyright (C) 2004-2022 ZNC, see the NOTICE file for details.
*
* 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/Chan.h>
#include <znc/IRCSock.h>
#include <znc/Server.h>
#include <znc/User.h>
#include <znc/IRCNetwork.h>
#include <tcl.h>
using std::vector;
using std::map;
#define STDVAR (ClientData cd, Tcl_Interp * irp, int argc, const char* argv[])
#define BADARGS(nl, nh, example) \
do { \
if ((argc < (nl)) || (argc > (nh))) { \
Tcl_AppendResult(irp, "wrong # args: should be \"", argv[0], \
(example), "\"", nullptr); \
return TCL_ERROR; \
} \
} while (0)
class CModTcl;
class CModTclTimer : public CTimer {
public:
CModTclTimer(CModule* pModule, unsigned int uInterval, unsigned int uCycles,
const CString& sLabel, const CString& sDescription)
: CTimer(pModule, uInterval, uCycles, sLabel, sDescription),
m_pParent(nullptr) {}
~CModTclTimer() override {}
protected:
void RunJob() override;
CModTcl* m_pParent;
};
class CModTclStartTimer : public CTimer {
public:
CModTclStartTimer(CModule* pModule, unsigned int uInterval,
unsigned int uCycles, const CString& sLabel,
const CString& sDescription)
: CTimer(pModule, uInterval, uCycles, sLabel, sDescription),
m_pParent(nullptr) {}
~CModTclStartTimer() override {}
protected:
void RunJob() override;
CModTcl* m_pParent;
};
class CModTcl : public CModule {
public:
MODCONSTRUCTOR(CModTcl) { interp = nullptr; }
~CModTcl() override {
if (interp) {
Tcl_DeleteInterp(interp);
}
}
bool OnLoad(const CString& sArgs, CString& sErrorMsg) override {
#ifndef MOD_MODTCL_ALLOW_EVERYONE
if (!GetUser()->IsAdmin()) {
sErrorMsg = "You must be admin to use the modtcl module";
return false;
}
#endif
AddTimer(
new CModTclStartTimer(this, 1, 1, "ModTclStarter",
"Timer for modtcl to load the interpreter."));
return true;
}
void Start() {
CString sMyArgs = GetArgs();
interp = Tcl_CreateInterp();
Tcl_Init(interp);
Tcl_CreateCommand(interp, "Binds::ProcessPubm", tcl_Bind, this,
nullptr);
Tcl_CreateCommand(interp, "Binds::ProcessMsgm", tcl_Bind, this,
nullptr);
Tcl_CreateCommand(interp, "Binds::ProcessTime", tcl_Bind, this,
nullptr);
Tcl_CreateCommand(interp, "Binds::ProcessEvnt", tcl_Bind, this,
nullptr);
Tcl_CreateCommand(interp, "Binds::ProcessNick", tcl_Bind, this,
nullptr);
Tcl_CreateCommand(interp, "Binds::ProcessKick", tcl_Bind, this,
nullptr);
Tcl_CreateCommand(interp, "PutIRC", tcl_PutIRC, this, nullptr);
Tcl_CreateCommand(interp, "PutModule", tcl_PutModule, this, nullptr);
Tcl_CreateCommand(interp, "PutStatus", tcl_PutStatus, this, nullptr);
Tcl_CreateCommand(interp, "PutStatusNotice", tcl_PutStatusNotice, this,
nullptr);
Tcl_CreateCommand(interp, "PutUser", tcl_PutUser, this, nullptr);
Tcl_CreateCommand(interp, "GetCurNick", tcl_GetCurNick, this, nullptr);
Tcl_CreateCommand(interp, "GetUsername", tcl_GetUsername, this,
nullptr);
Tcl_CreateCommand(interp, "GetNetworkName", tcl_GetNetworkName, this,
nullptr);
Tcl_CreateCommand(interp, "GetRealName", tcl_GetRealName, this,
nullptr);
Tcl_CreateCommand(interp, "GetVHost", tcl_GetBindHost, this, nullptr);
Tcl_CreateCommand(interp, "GetBindHost", tcl_GetBindHost, this,
nullptr);
Tcl_CreateCommand(interp, "GetChans", tcl_GetChans, this, nullptr);
Tcl_CreateCommand(interp, "GetChannelUsers", tcl_GetChannelUsers, this,
nullptr);
Tcl_CreateCommand(interp, "GetChannelModes", tcl_GetChannelModes, this,
nullptr);
Tcl_CreateCommand(interp, "GetServer", tcl_GetServer, this, nullptr);
Tcl_CreateCommand(interp, "GetServerOnline", tcl_GetServerOnline, this,
nullptr);
Tcl_CreateCommand(interp, "GetModules", tcl_GetModules, this, nullptr);
Tcl_CreateCommand(interp, "GetClientCount", tcl_GetClientCount, this,
nullptr);
Tcl_CreateCommand(interp, "exit", tcl_exit, this, nullptr);
if (!sMyArgs.empty()) {
int i = Tcl_EvalFile(interp, sMyArgs.c_str());
if (i != TCL_OK) {
PutModule(Tcl_GetStringResult(interp));
}
}
AddTimer(new CModTclTimer(
this, 1, 0, "ModTclUpdate",
"Timer for modtcl to process pending events and idle callbacks."));
}
void OnModCommand(const CString& sCommand) override {
CString sResult;
VCString vsResult;
CString sCmd = sCommand;
if (sCmd.Token(0).CaseCmp(".tcl") == 0) sCmd = sCmd.Token(1, true);
if (sCmd.Left(1).CaseCmp(".") == 0)
sCmd = "Binds::ProcessDcc - - {" + sCmd + "}";
Tcl_Eval(interp, sCmd.c_str());
sResult = CString(Tcl_GetStringResult(interp));
if (!sResult.empty()) {
sResult.Split("\n", vsResult);
unsigned int a = 0;
for (a = 0; a < vsResult.size(); a++)
PutModule(vsResult[a].TrimRight_n());
}
}
void TclUpdate() {
while (Tcl_DoOneEvent(TCL_DONT_WAIT)) {
}
int i = Tcl_Eval(interp, "Binds::ProcessTime");
if (i != TCL_OK) {
PutModule(Tcl_GetStringResult(interp));
}
}
CString TclEscape(CString sLine) {
sLine.Replace("\\", "\\\\");
sLine.Replace("{", "\\{");
sLine.Replace("}", "\\}");
return sLine;
}
void OnPreRehash() override {
if (interp) Tcl_Eval(interp, "Binds::ProcessEvnt prerehash");
}
void OnPostRehash() override {
if (interp) {
Tcl_Eval(interp, "rehash");
Tcl_Eval(interp, "Binds::ProcessEvnt rehash");
}
}
void OnIRCConnected() override {
if (interp) Tcl_Eval(interp, "Binds::ProcessEvnt init-server");
}
void OnIRCDisconnected() override {
if (interp) Tcl_Eval(interp, "Binds::ProcessEvnt disconnect-server");
}
EModRet OnChanMsg(CNick& Nick, CChan& Channel, CString& sMessage) override {
CString sMes = TclEscape(sMessage);
CString sNick = TclEscape(CString(Nick.GetNick()));
CString sHost =
TclEscape(CString(Nick.GetIdent() + "@" + Nick.GetHost()));
CString sChannel = TclEscape(CString(Channel.GetName()));
CString sCommand = "Binds::ProcessPubm {" + sNick + "} {" + sHost +
"} - {" + sChannel + "} {" + sMes + "}";
int i = Tcl_Eval(interp, sCommand.c_str());
if (i != TCL_OK) {
PutModule(Tcl_GetStringResult(interp));
}
return CONTINUE;
}
EModRet OnPrivMsg(CNick& Nick, CString& sMessage) override {
CString sMes = TclEscape(sMessage);
CString sNick = TclEscape(CString(Nick.GetNick()));
CString sHost =
TclEscape(CString(Nick.GetIdent() + "@" + Nick.GetHost()));
CString sCommand = "Binds::ProcessMsgm {" + sNick + "} {" + sHost +
"} - {" + sMes + "}";
int i = Tcl_Eval(interp, sCommand.c_str());
if (i != TCL_OK) {
PutModule(Tcl_GetStringResult(interp));
}
return CONTINUE;
}
void OnNick(const CNick& OldNick, const CString& sNewNick,
const vector<CChan*>& vChans) override {
CString sOldNick = TclEscape(CString(OldNick.GetNick()));
CString sNewNickTmp = TclEscape(sNewNick);
CString sHost =
TclEscape(CString(OldNick.GetIdent() + "@" + OldNick.GetHost()));
CString sCommand;
// Nick change is triggered for each common chan so that binds can be
// chan specific
unsigned int nLength = vChans.size();
for (unsigned int n = 0; n < nLength; n++) {
sCommand = "Binds::ProcessNick {" + sOldNick + "} {" + sHost +
"} - {" + vChans[n]->GetName() + "} {" + sNewNickTmp +
"}";
int i = Tcl_Eval(interp, sCommand.c_str());
if (i != TCL_OK) {
PutModule(Tcl_GetStringResult(interp));
}
}
}
void OnKick(const CNick& OpNick, const CString& sKickedNick, CChan& Channel,
const CString& sMessage) override {
CString sOpNick = TclEscape(CString(OpNick.GetNick()));
CString sNick = TclEscape(sKickedNick);
CString sOpHost =
TclEscape(CString(OpNick.GetIdent() + "@" + OpNick.GetHost()));
CString sCommand = "Binds::ProcessKick {" + sOpNick + "} {" + sOpHost +
"} - {" + Channel.GetName() + "} {" + sNick + "} {" +
sMessage + "}";
int i = Tcl_Eval(interp, sCommand.c_str());
if (i != TCL_OK) {
PutModule(Tcl_GetStringResult(interp));
}
}
private:
Tcl_Interp* interp;
static CString argvit(const char* argv[], unsigned int end,
unsigned int begin, CString delim) {
CString sRet;
unsigned int i;
if (begin < end) sRet = CString(argv[begin]);
for (i = begin + 1; i < end; i++) {
sRet = sRet + delim + CString(argv[i]);
}
return sRet;
}
// Placeholder for binds incase binds.tcl isn't used
static int tcl_Bind STDVAR { return TCL_OK; }
static int tcl_GetCurNick STDVAR {
CModTcl* mod = static_cast<CModTcl*>(cd);
Tcl_SetResult(irp, (char*)mod->GetNetwork()->GetCurNick().c_str(),
TCL_VOLATILE);
return TCL_OK;
}
static int tcl_GetUsername STDVAR {
CModTcl* mod = static_cast<CModTcl*>(cd);
Tcl_SetResult(irp, (char*)mod->GetUser()->GetUsername().c_str(),
TCL_VOLATILE);
return TCL_OK;
}
static int tcl_GetNetworkName STDVAR {
CModTcl* mod = static_cast<CModTcl*>(cd);
Tcl_SetResult(irp, (char*)mod->GetNetwork()->GetName().c_str(),
TCL_VOLATILE);
return TCL_OK;
}
static int tcl_GetRealName STDVAR {
CModTcl* mod = static_cast<CModTcl*>(cd);
Tcl_SetResult(irp, (char*)mod->GetUser()->GetRealName().c_str(),
TCL_VOLATILE);
return TCL_OK;
}
static int tcl_GetBindHost STDVAR {
CModTcl* mod = static_cast<CModTcl*>(cd);
Tcl_SetResult(irp, (char*)mod->GetUser()->GetBindHost().c_str(),
TCL_VOLATILE);
return TCL_OK;
}
static int tcl_GetChans STDVAR {
char* p;
const char* l[1];
CModTcl* mod = static_cast<CModTcl*>(cd);
BADARGS(1, 1, "");
const vector<CChan*>& Channels = mod->GetNetwork()->GetChans();
for (unsigned int c = 0; c < Channels.size(); c++) {
CChan* pChan = Channels[c];
l[0] = pChan->GetName().c_str();
p = Tcl_Merge(1, l);
Tcl_AppendElement(irp, p);
Tcl_Free((char*)p);
}
return TCL_OK;
}
static int tcl_GetChannelUsers STDVAR {
char* p;
const char* l[4];
CModTcl* mod = static_cast<CModTcl*>(cd);
BADARGS(2, 999, " channel");
CString sChannel = argvit(argv, argc, 1, " ");
CChan* pChannel = mod->GetNetwork()->FindChan(sChannel);
if (!pChannel) {
CString sMsg = "invalid channel: " + sChannel;
Tcl_SetResult(irp, (char*)sMsg.c_str(), TCL_VOLATILE);
return TCL_ERROR;
}
const map<CString, CNick>& msNicks = pChannel->GetNicks();
for (map<CString, CNick>::const_iterator it = msNicks.begin();
it != msNicks.end(); ++it) {
const CNick& Nick = it->second;
l[0] = (Nick.GetNick()).c_str();
l[1] = (Nick.GetIdent()).c_str();
l[2] = (Nick.GetHost()).c_str();
l[3] = (Nick.GetPermStr()).c_str();
p = Tcl_Merge(4, l);
Tcl_AppendElement(irp, p);
Tcl_Free((char*)p);
}
return TCL_OK;
}
static int tcl_GetChannelModes STDVAR {
CModTcl* mod = static_cast<CModTcl*>(cd);
BADARGS(2, 999, " channel");
CString sChannel = argvit(argv, argc, 1, " ");
CChan* pChannel = mod->GetNetwork()->FindChan(sChannel);
CString sMsg;
if (!pChannel) {
sMsg = "invalid channel: " + sChannel;
Tcl_SetResult(irp, (char*)sMsg.c_str(), TCL_VOLATILE);
return TCL_ERROR;
}
sMsg = pChannel->GetModeString();
Tcl_SetResult(irp, (char*)sMsg.c_str(), TCL_VOLATILE);
return TCL_OK;
}
static int tcl_GetServer STDVAR {
CModTcl* mod = static_cast<CModTcl*>(cd);
CServer* pServer = mod->GetNetwork()->GetCurrentServer();
CString sMsg;
if (pServer)
sMsg = pServer->GetName() + ":" + CString(pServer->GetPort());
Tcl_SetResult(irp, (char*)sMsg.c_str(), TCL_VOLATILE);
return TCL_OK;
}
static int tcl_GetServerOnline STDVAR {
CModTcl* mod = static_cast<CModTcl*>(cd);
CIRCSock* pIRCSock = mod->GetNetwork()->GetIRCSock();
CString sMsg = "0";
if (pIRCSock) sMsg = CString(pIRCSock->GetStartTime());
Tcl_SetResult(irp, (char*)sMsg.c_str(), TCL_VOLATILE);
return TCL_OK;
}
static int tcl_GetModules STDVAR {
char* p;
const char* l[3];
CModTcl* mod = static_cast<CModTcl*>(cd);
BADARGS(1, 1, "");
CModules& GModules = CZNC::Get().GetModules();
CModules& Modules = mod->GetUser()->GetModules();
for (unsigned int b = 0; b < GModules.size(); b++) {
l[0] = GModules[b]->GetModName().c_str();
l[1] = GModules[b]->GetArgs().c_str();
l[2] = "1"; // IsGlobal
p = Tcl_Merge(3, l);
Tcl_AppendElement(irp, p);
Tcl_Free((char*)p);
}
for (unsigned int b = 0; b < Modules.size(); b++) {
l[0] = Modules[b]->GetModName().c_str();
l[1] = Modules[b]->GetArgs().c_str();
l[2] = "0"; // IsGlobal
p = Tcl_Merge(3, l);
Tcl_AppendElement(irp, p);
Tcl_Free((char*)p);
}
return TCL_OK;
}
static int tcl_GetClientCount STDVAR {
CModTcl* mod = static_cast<CModTcl*>(cd);
Tcl_SetResult(
irp, (char*)CString(mod->GetNetwork()->GetClients().size()).c_str(),
TCL_VOLATILE);
return TCL_OK;
}
static int tcl_PutIRC STDVAR {
CString sMsg;
CModTcl* mod = static_cast<CModTcl*>(cd);
BADARGS(2, 999, " string");
sMsg = argvit(argv, argc, 1, " ");
mod->GetNetwork()->PutIRC(sMsg);
return TCL_OK;
}
static int tcl_PutModule STDVAR {
CString sMsg;
VCString vsMsg;
CModTcl* mod = static_cast<CModTcl*>(cd);
BADARGS(2, 999, " string");
sMsg = argvit(argv, argc, 1, " ");
// mod->PutModule(sMsg);
sMsg.Split("\n", vsMsg);
unsigned int a = 0;
for (a = 0; a < vsMsg.size(); a++)
mod->PutModule(vsMsg[a].TrimRight_n());
return TCL_OK;
}
static int tcl_PutStatus STDVAR {
CString sMsg;
CModTcl* mod = static_cast<CModTcl*>(cd);
BADARGS(2, 999, " string");
sMsg = argvit(argv, argc, 1, " ");
mod->PutStatus(sMsg);
return TCL_OK;
}
static int tcl_PutStatusNotice STDVAR {
CString sMsg;
CModTcl* mod = static_cast<CModTcl*>(cd);
BADARGS(2, 999, " string");
sMsg = argvit(argv, argc, 1, " ");
mod->GetUser()->PutStatusNotice(sMsg);
return TCL_OK;
}
static int tcl_PutUser STDVAR {
CString sMsg;
CModTcl* mod = static_cast<CModTcl*>(cd);
BADARGS(2, 999, " string");
sMsg = argvit(argv, argc, 1, " ");
mod->GetUser()->PutUser(sMsg);
return TCL_OK;
}
static int tcl_exit STDVAR {
CString sMsg;
CModTcl* mod = static_cast<CModTcl*>(cd);
BADARGS(1, 2, " ?reason?");
if (!mod->GetUser()->IsAdmin()) {
sMsg = "You need to be administrator to shutdown the bnc.";
Tcl_SetResult(irp, (char*)sMsg.c_str(), TCL_VOLATILE);
return TCL_ERROR;
}
if (argc > 1) {
sMsg = argvit(argv, argc, 1, " ");
CZNC::Get().Broadcast(sMsg);
usleep(100000); // Sleep for 10ms to attempt to allow the previous
// Broadcast() to go through to all users
}
throw CException(CException::EX_Shutdown);
return TCL_OK;
}
};
void CModTclTimer::RunJob() {
CModTcl* p = (CModTcl*)GetModule();
if (p) p->TclUpdate();
}
void CModTclStartTimer::RunJob() {
CModTcl* p = (CModTcl*)GetModule();
if (p) p->Start();
}
template <>
void TModInfo<CModTcl>(CModInfo& Info) {
Info.SetWikiPage("modtcl");
Info.SetHasArgs(true);
Info.SetArgsHelpText("Absolute path to modtcl.tcl file");
}
NETWORKMODULEDEFS(CModTcl, "Loads Tcl scripts as ZNC modules")