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anope/modules/commands/os_akill.cpp

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2023-05-07 17:44:21 +00:00
/* OperServ core functions
*
* (C) 2003-2022 Anope Team
* Contact us at team@anope.org
*
* Please read COPYING and README for further details.
*
* Based on the original code of Epona by Lara.
* Based on the original code of Services by Andy Church.
*/
#include "module.h"
static ServiceReference<XLineManager> akills("XLineManager", "xlinemanager/sgline");
class AkillDelCallback : public NumberList
{
CommandSource &source;
unsigned deleted;
Command *cmd;
public:
AkillDelCallback(CommandSource &_source, const Anope::string &numlist, Command *c) : NumberList(numlist, true), source(_source), deleted(0), cmd(c)
{
}
~AkillDelCallback()
{
if (!deleted)
source.Reply(_("No matching entries on the AKILL list."));
else if (deleted == 1)
source.Reply(_("Deleted 1 entry from the AKILL list."));
else
source.Reply(_("Deleted %d entries from the AKILL list."), deleted);
}
void HandleNumber(unsigned number) anope_override
{
if (!number)
return;
XLine *x = akills->GetEntry(number - 1);
if (!x)
return;
Log(LOG_ADMIN, source, cmd) << "to remove " << x->mask << " from the list";
++deleted;
DoDel(source, x);
}
static void DoDel(CommandSource &source, XLine *x)
{
akills->DelXLine(x);
}
};
class CommandOSAKill : public Command
{
private:
void DoAdd(CommandSource &source, const std::vector<Anope::string> &params)
{
Anope::string expiry, mask;
if (params.size() < 2)
{
this->OnSyntaxError(source, "ADD");
return;
}
spacesepstream sep(params[1]);
sep.GetToken(mask);
if (mask[0] == '+')
{
expiry = mask;
sep.GetToken(mask);
}
time_t expires = !expiry.empty() ? Anope::DoTime(expiry) : Config->GetModule("operserv")->Get<time_t>("autokillexpiry", "30d");
/* If the expiry given does not contain a final letter, it's in days,
* said the doc. Ah well.
*/
if (!expiry.empty() && isdigit(expiry[expiry.length() - 1]))
expires *= 86400;
/* Do not allow less than a minute expiry time */
if (expires && expires < 60)
{
source.Reply(BAD_EXPIRY_TIME);
return;
}
else if (expires > 0)
expires += Anope::CurTime;
if (sep.StreamEnd())
{
this->OnSyntaxError(source, "ADD");
return;
}
Anope::string reason;
if (mask.find('#') != Anope::string::npos)
{
Anope::string remaining = sep.GetRemaining();
size_t co = remaining[0] == ':' ? 0 : remaining.rfind(" :");
if (co == Anope::string::npos)
{
this->OnSyntaxError(source, "ADD");
return;
}
if (co != 0)
++co;
reason = remaining.substr(co + 1);
mask += " " + remaining.substr(0, co);
mask.trim();
}
else
reason = sep.GetRemaining();
if (mask[0] == '/' && mask[mask.length() - 1] == '/')
{
const Anope::string &regexengine = Config->GetBlock("options")->Get<const Anope::string>("regexengine");
if (regexengine.empty())
{
source.Reply(_("Regex is disabled."));
return;
}
ServiceReference<RegexProvider> provider("Regex", regexengine);
if (!provider)
{
source.Reply(_("Unable to find regex engine %s."), regexengine.c_str());
return;
}
try
{
Anope::string stripped_mask = mask.substr(1, mask.length() - 2);
delete provider->Compile(stripped_mask);
}
catch (const RegexException &ex)
{
source.Reply("%s", ex.GetReason().c_str());
return;
}
}
User *targ = User::Find(mask, true);
if (targ)
mask = "*@" + targ->host;
if (Config->GetModule("operserv")->Get<bool>("addakiller", "yes") && !source.GetNick().empty())
reason = "[" + source.GetNick() + "] " + reason;
if (mask.find_first_not_of("/~@.*?") == Anope::string::npos)
{
source.Reply(USERHOST_MASK_TOO_WIDE, mask.c_str());
return;
}
else if (mask.find('@') == Anope::string::npos)
{
source.Reply(BAD_USERHOST_MASK);
return;
}
XLine *x = new XLine(mask, source.GetNick(), expires, reason);
if (Config->GetModule("operserv")->Get<bool>("akillids"))
x->id = XLineManager::GenerateUID();
unsigned int affected = 0;
for (user_map::const_iterator it = UserListByNick.begin(); it != UserListByNick.end(); ++it)
if (akills->Check(it->second, x))
++affected;
float percent = static_cast<float>(affected) / static_cast<float>(UserListByNick.size()) * 100.0;
if (percent > 95)
{
source.Reply(USERHOST_MASK_TOO_WIDE, mask.c_str());
Log(LOG_ADMIN, source, this) << "tried to akill " << percent << "% of the network (" << affected << " users)";
delete x;
return;
}
if (!akills->CanAdd(source, mask, expires, reason))
return;
EventReturn MOD_RESULT;
FOREACH_RESULT(OnAddXLine, MOD_RESULT, (source, x, akills));
if (MOD_RESULT == EVENT_STOP)
{
delete x;
return;
}
akills->AddXLine(x);
if (Config->GetModule("operserv")->Get<bool>("akillonadd"))
akills->Send(NULL, x);
source.Reply(_("\002%s\002 added to the AKILL list."), mask.c_str());
Log(LOG_ADMIN, source, this) << "on " << mask << " (" << x->reason << "), expires in " << (expires ? Anope::Duration(expires - Anope::CurTime) : "never") << " [affects " << affected << " user(s) (" << percent << "%)]";
if (Anope::ReadOnly)
source.Reply(READ_ONLY_MODE);
}
void DoDel(CommandSource &source, const std::vector<Anope::string> &params)
{
const Anope::string &mask = params.size() > 1 ? params[1] : "";
if (mask.empty())
{
this->OnSyntaxError(source, "DEL");
return;
}
if (akills->GetList().empty())
{
source.Reply(_("AKILL list is empty."));
return;
}
if (isdigit(mask[0]) && mask.find_first_not_of("1234567890,-") == Anope::string::npos)
{
AkillDelCallback list(source, mask, this);
list.Process();
}
else
{
XLine *x = akills->HasEntry(mask);
if (!x)
{
source.Reply(_("\002%s\002 not found on the AKILL list."), mask.c_str());
return;
}
do
{
FOREACH_MOD(OnDelXLine, (source, x, akills));
Log(LOG_ADMIN, source, this) << "to remove " << x->mask << " from the list";
source.Reply(_("\002%s\002 deleted from the AKILL list."), x->mask.c_str());
AkillDelCallback::DoDel(source, x);
}
while ((x = akills->HasEntry(mask)));
}
if (Anope::ReadOnly)
source.Reply(READ_ONLY_MODE);
return;
}
void ProcessList(CommandSource &source, const std::vector<Anope::string> &params, ListFormatter &list)
{
const Anope::string &mask = params.size() > 1 ? params[1] : "";
if (!mask.empty() && isdigit(mask[0]) && mask.find_first_not_of("1234567890,-") == Anope::string::npos)
{
class ListCallback : public NumberList
{
CommandSource &source;
ListFormatter &list;
public:
ListCallback(CommandSource &_source, ListFormatter &_list, const Anope::string &numstr) : NumberList(numstr, false), source(_source), list(_list)
{
}
void HandleNumber(unsigned number) anope_override
{
if (!number)
return;
const XLine *x = akills->GetEntry(number - 1);
if (!x)
return;
ListFormatter::ListEntry entry;
entry["Number"] = stringify(number);
entry["Mask"] = x->mask;
entry["Creator"] = x->by;
entry["Created"] = Anope::strftime(x->created, NULL, true);
entry["Expires"] = Anope::Expires(x->expires, source.nc);
entry["ID"] = x->id;
entry["Reason"] = x->reason;
this->list.AddEntry(entry);
}
}
nl_list(source, list, mask);
nl_list.Process();
}
else
{
for (unsigned i = 0, end = akills->GetCount(); i < end; ++i)
{
const XLine *x = akills->GetEntry(i);
if (mask.empty() || mask.equals_ci(x->mask) || mask == x->id || Anope::Match(x->mask, mask, false, true))
{
ListFormatter::ListEntry entry;
entry["Number"] = stringify(i + 1);
entry["Mask"] = x->mask;
entry["Creator"] = x->by;
entry["Created"] = Anope::strftime(x->created, NULL, true);
entry["Expires"] = Anope::Expires(x->expires, source.nc);
entry["ID"] = x->id;
entry["Reason"] = x->reason;
list.AddEntry(entry);
}
}
}
if (list.IsEmpty())
source.Reply(_("No matching entries on the AKILL list."));
else
{
source.Reply(_("Current AKILL list:"));
std::vector<Anope::string> replies;
list.Process(replies);
for (unsigned i = 0; i < replies.size(); ++i)
source.Reply(replies[i]);
source.Reply(_("End of AKILL list."));
}
}
void DoList(CommandSource &source, const std::vector<Anope::string> &params)
{
if (akills->GetList().empty())
{
source.Reply(_("AKILL list is empty."));
return;
}
ListFormatter list(source.GetAccount());
list.AddColumn(_("Number")).AddColumn(_("Mask")).AddColumn(_("Reason"));
this->ProcessList(source, params, list);
}
void DoView(CommandSource &source, const std::vector<Anope::string> &params)
{
if (akills->GetList().empty())
{
source.Reply(_("AKILL list is empty."));
return;
}
ListFormatter list(source.GetAccount());
list.AddColumn(_("Number")).AddColumn(_("Mask")).AddColumn(_("Creator")).AddColumn(_("Created")).AddColumn(_("Expires"));
if (Config->GetModule("operserv")->Get<bool>("akillids"))
list.AddColumn(_("ID"));
list.AddColumn(_("Reason"));
this->ProcessList(source, params, list);
}
void DoClear(CommandSource &source)
{
for (unsigned i = akills->GetCount(); i > 0; --i)
{
XLine *x = akills->GetEntry(i - 1);
FOREACH_MOD(OnDelXLine, (source, x, akills));
akills->DelXLine(x);
}
Log(LOG_ADMIN, source, this) << "to CLEAR the list";
source.Reply(_("The AKILL list has been cleared."));
if (Anope::ReadOnly)
source.Reply(READ_ONLY_MODE);
}
public:
CommandOSAKill(Module *creator) : Command(creator, "operserv/akill", 1, 2)
{
this->SetDesc(_("Manipulate the AKILL list"));
this->SetSyntax(_("ADD [+\037expiry\037] \037mask\037 \037reason\037"));
this->SetSyntax(_("DEL {\037mask\037 | \037entry-num\037 | \037list\037 | \037id\037}"));
this->SetSyntax(_("LIST [\037mask\037 | \037list\037 | \037id\037]"));
this->SetSyntax(_("VIEW [\037mask\037 | \037list\037 | \037id\037]"));
this->SetSyntax("CLEAR");
}
void Execute(CommandSource &source, const std::vector<Anope::string> &params) anope_override
{
const Anope::string &cmd = params[0];
if (!akills)
return;
if (cmd.equals_ci("ADD"))
return this->DoAdd(source, params);
else if (cmd.equals_ci("DEL"))
return this->DoDel(source, params);
else if (cmd.equals_ci("LIST"))
return this->DoList(source, params);
else if (cmd.equals_ci("VIEW"))
return this->DoView(source, params);
else if (cmd.equals_ci("CLEAR"))
return this->DoClear(source);
else
this->OnSyntaxError(source, "");
return;
}
bool OnHelp(CommandSource &source, const Anope::string &subcommand) anope_override
{
this->SendSyntax(source);
source.Reply(" ");
source.Reply(_("Allows Services Operators to manipulate the AKILL list. If\n"
"a user matching an AKILL mask attempts to connect, Services\n"
"will issue a KILL for that user and, on supported server\n"
"types, will instruct all servers to add a ban for the mask\n"
"which the user matched.\n"
" \n"
"\002AKILL ADD\002 adds the given mask to the AKILL\n"
"list for the given reason, which \002must\002 be given.\n"
"Mask should be in the format of nick!user@host#real name,\n"
"though all that is required is user@host. If a real name is specified,\n"
"the reason must be prepended with a :.\n"
"\037expiry\037 is specified as an integer followed by one of \037d\037\n"
"(days), \037h\037 (hours), or \037m\037 (minutes). Combinations (such as\n"
"\0371h30m\037) are not permitted. If a unit specifier is not\n"
"included, the default is days (so \037+30\037 by itself means 30\n"
"days). To add an AKILL which does not expire, use \037+0\037. If the\n"
"usermask to be added starts with a \037+\037, an expiry time must\n"
"be given, even if it is the same as the default. The\n"
"current AKILL default expiry time can be found with the\n"
"\002STATS AKILL\002 command."));
const Anope::string &regexengine = Config->GetBlock("options")->Get<const Anope::string>("regexengine");
if (!regexengine.empty())
{
source.Reply(" ");
source.Reply(_("Regex matches are also supported using the %s engine.\n"
"Enclose your mask in // if this is desired."), regexengine.c_str());
}
source.Reply(_(
" \n"
"The \002AKILL DEL\002 command removes the given mask from the\n"
"AKILL list if it is present. If a list of entry numbers is\n"
"given, those entries are deleted. (See the example for LIST\n"
"below.)\n"
" \n"
"The \002AKILL LIST\002 command displays the AKILL list.\n"
"If a wildcard mask is given, only those entries matching the\n"
"mask are displayed. If a list of entry numbers is given,\n"
"only those entries are shown; for example:\n"
" \002AKILL LIST 2-5,7-9\002\n"
" Lists AKILL entries numbered 2 through 5 and 7\n"
" through 9.\n"
" \n"
"\002AKILL VIEW\002 is a more verbose version of \002AKILL LIST\002, and\n"
"will show who added an AKILL, the date it was added, and when\n"
"it expires, as well as the user@host/ip mask and reason.\n"
" \n"
"\002AKILL CLEAR\002 clears all entries of the AKILL list."));
return true;
}
};
class OSAKill : public Module
{
CommandOSAKill commandosakill;
public:
OSAKill(const Anope::string &modname, const Anope::string &creator) : Module(modname, creator, VENDOR),
commandosakill(this)
{
}
};
MODULE_INIT(OSAKill)