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autocycle.cpp
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autocycle.cpp
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/*
* Copyright (C) 2004-2015 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/IRCNetwork.h>
using std::vector;
class CAutoCycleMod : public CModule {
public:
MODCONSTRUCTOR(CAutoCycleMod) {
AddHelpCommand();
AddCommand("Add", static_cast<CModCommand::ModCmdFunc>(
&CAutoCycleMod::OnAddCommand),
"[!]<#chan>",
"Add an entry, use !#chan to negate and * for wildcards");
AddCommand("Del", static_cast<CModCommand::ModCmdFunc>(
&CAutoCycleMod::OnDelCommand),
"[!]<#chan>", "Remove an entry, needs to be an exact match");
AddCommand("List", static_cast<CModCommand::ModCmdFunc>(
&CAutoCycleMod::OnListCommand),
"", "List all entries");
m_recentlyCycled.SetTTL(15 * 1000);
}
~CAutoCycleMod() override {}
bool OnLoad(const CString& sArgs, CString& sMessage) override {
VCString vsChans;
sArgs.Split(" ", vsChans, false);
for (const CString& sChan : vsChans) {
if (!Add(sChan)) {
PutModule("Unable to add [" + sChan + "]");
}
}
// Load our saved settings, ignore errors
MCString::iterator it;
for (it = BeginNV(); it != EndNV(); ++it) {
Add(it->first);
}
// Default is auto cycle for all channels
if (m_vsChans.empty()) Add("*");
return true;
}
void OnAddCommand(const CString& sLine) {
CString sChan = sLine.Token(1);
if (AlreadyAdded(sChan)) {
PutModule(sChan + " is already added");
} else if (Add(sChan)) {
PutModule("Added " + sChan + " to list");
} else {
PutModule("Usage: Add [!]<#chan>");
}
}
void OnDelCommand(const CString& sLine) {
CString sChan = sLine.Token(1);
if (Del(sChan))
PutModule("Removed " + sChan + " from list");
else
PutModule("Usage: Del [!]<#chan>");
}
void OnListCommand(const CString& sLine) {
CTable Table;
Table.AddColumn("Chan");
for (const CString& sChan : m_vsChans) {
Table.AddRow();
Table.SetCell("Chan", sChan);
}
for (const CString& sChan : m_vsNegChans) {
Table.AddRow();
Table.SetCell("Chan", "!" + sChan);
}
if (Table.size()) {
PutModule(Table);
} else {
PutModule("You have no entries.");
}
}
void OnPart(const CNick& Nick, CChan& Channel,
const CString& sMessage) override {
AutoCycle(Channel);
}
void OnQuit(const CNick& Nick, const CString& sMessage,
const vector<CChan*>& vChans) override {
for (CChan* pChan : vChans) AutoCycle(*pChan);
}
void OnKick(const CNick& Nick, const CString& sOpNick, CChan& Channel,
const CString& sMessage) override {
AutoCycle(Channel);
}
protected:
void AutoCycle(CChan& Channel) {
if (!IsAutoCycle(Channel.GetName())) return;
// Did we recently annoy opers via cycling of an empty channel?
if (m_recentlyCycled.HasItem(Channel.GetName())) return;
// Is there only one person left in the channel?
if (Channel.GetNickCount() != 1) return;
// Is that person us and we don't have op?
const CNick& pNick = Channel.GetNicks().begin()->second;
if (!pNick.HasPerm(CChan::Op) &&
pNick.NickEquals(GetNetwork()->GetCurNick())) {
Channel.Cycle();
m_recentlyCycled.AddItem(Channel.GetName());
}
}
bool AlreadyAdded(const CString& sInput) {
CString sChan = sInput;
if (sChan.TrimPrefix("!")) {
for (const CString& s : m_vsNegChans) {
if (s.Equals(sChan)) return true;
}
} else {
for (const CString& s : m_vsChans) {
if (s.Equals(sChan)) return true;
}
}
return false;
}
bool Add(const CString& sChan) {
if (sChan.empty() || sChan == "!") {
return false;
}
if (sChan.Left(1) == "!") {
m_vsNegChans.push_back(sChan.substr(1));
} else {
m_vsChans.push_back(sChan);
}
// Also save it for next module load
SetNV(sChan, "");
return true;
}
bool Del(const CString& sChan) {
vector<CString>::iterator it, end;
if (sChan.empty() || sChan == "!") return false;
if (sChan.Left(1) == "!") {
CString sTmp = sChan.substr(1);
it = m_vsNegChans.begin();
end = m_vsNegChans.end();
for (; it != end; ++it)
if (*it == sTmp) break;
if (it == end) return false;
m_vsNegChans.erase(it);
} else {
it = m_vsChans.begin();
end = m_vsChans.end();
for (; it != end; ++it)
if (*it == sChan) break;
if (it == end) return false;
m_vsChans.erase(it);
}
DelNV(sChan);
return true;
}
bool IsAutoCycle(const CString& sChan) {
for (const CString& s : m_vsNegChans) {
if (sChan.WildCmp(s, CString::CaseInsensitive)) {
return false;
}
}
for (const CString& s : m_vsChans) {
if (sChan.WildCmp(s, CString::CaseInsensitive)) {
return true;
}
}
return false;
}
private:
vector<CString> m_vsChans;
vector<CString> m_vsNegChans;
TCacheMap<CString> m_recentlyCycled;
};
template <>
void TModInfo<CAutoCycleMod>(CModInfo& Info) {
Info.SetWikiPage("autocycle");
Info.SetHasArgs(true);
Info.SetArgsHelpText(
"List of channel masks and channel masks with ! before them.");
}
NETWORKMODULEDEFS(CAutoCycleMod,
"Rejoins channels to gain Op if you're the only user left")