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/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2007 InspIRCd Development Team
* See: http://www.inspircd.org/wiki/index.php/Credits
*
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#include "inspircd.h"
#include "configreader.h"
#include "users.h"
#include "commands/cmd_whowas.h"
WhoWasMaintainTimer * timer;
extern "C" DllExport command_t* init_command(InspIRCd* Instance)
{
return new cmd_whowas(Instance);
}
cmd_whowas::cmd_whowas(InspIRCd* Instance)
: command_t(Instance, "WHOWAS", 0, 1)
{
syntax = "<nick>{,<nick>}";
timer = new WhoWasMaintainTimer(Instance, 3600);
Instance->Timers->AddTimer(timer);
}
CmdResult cmd_whowas::Handle (const char** parameters, int pcnt, userrec* user)
{
/* if whowas disabled in config */
if (ServerInstance->Config->WhoWasGroupSize == 0 || ServerInstance->Config->WhoWasMaxGroups == 0)
{
user->WriteServ("421 %s %s :This command has been disabled.",user->nick,command.c_str());
return CMD_FAILURE;
}
whowas_users::iterator i = whowas.find(parameters[0]);
if (i == whowas.end())
{
user->WriteServ("406 %s %s :There was no such nickname",user->nick,parameters[0]);
user->WriteServ("369 %s %s :End of WHOWAS",user->nick,parameters[0]);
return CMD_FAILURE;
}
else
{
whowas_set* grp = i->second;
if (grp->size())
{
for (whowas_set::iterator ux = grp->begin(); ux != grp->end(); ux++)
{
WhoWasGroup* u = *ux;
time_t rawtime = u->signon;
tm *timeinfo;
char b[MAXBUF];
timeinfo = localtime(&rawtime);
/* XXX - 'b' could be only 25 chars long and then strlcpy() would terminate it for us too? */
strlcpy(b,asctime(timeinfo),MAXBUF);
b[24] = 0;
user->WriteServ("314 %s %s %s %s * :%s",user->nick,parameters[0],u->ident,u->dhost,u->gecos);
if (IS_OPER(user))
user->WriteServ("379 %s %s :was connecting from *@%s", user->nick, parameters[0], u->host);
if (*ServerInstance->Config->HideWhoisServer && !IS_OPER(user))
user->WriteServ("312 %s %s %s :%s",user->nick,parameters[0], ServerInstance->Config->HideWhoisServer, b);
else
user->WriteServ("312 %s %s %s :%s",user->nick,parameters[0], u->server, b);
}
}
else
{
user->WriteServ("406 %s %s :There was no such nickname",user->nick,parameters[0]);
user->WriteServ("369 %s %s :End of WHOWAS",user->nick,parameters[0]);
return CMD_FAILURE;
}
}
user->WriteServ("369 %s %s :End of WHOWAS",user->nick,parameters[0]);
return CMD_SUCCESS;
}
CmdResult cmd_whowas::HandleInternal(const unsigned int id, const std::deque<classbase*> ¶meters)
{
switch (id)
{
case WHOWAS_ADD:
AddToWhoWas((userrec*)parameters[0]);
break;
case WHOWAS_STATS:
GetStats((Extensible*)parameters[0]);
break;
case WHOWAS_PRUNE:
PruneWhoWas(ServerInstance->Time());
break;
case WHOWAS_MAINTAIN:
MaintainWhoWas(ServerInstance->Time());
break;
default:
break;
}
return CMD_SUCCESS;
}
void cmd_whowas::GetStats(Extensible* ext)
{
int whowas_size = 0;
int whowas_bytes = 0;
whowas_users_fifo::iterator iter;
for (iter = whowas_fifo.begin(); iter != whowas_fifo.end(); iter++)
{
whowas_set* n = (whowas_set*)whowas.find(iter->second)->second;
if (n->size())
{
whowas_size += n->size();
whowas_bytes += (sizeof(whowas_set) + ( sizeof(WhoWasGroup) * n->size() ) );
}
}
stats.assign("Whowas(MAPSETS) " +ConvToStr(whowas_size)+" ("+ConvToStr(whowas_bytes)+" bytes)");
ext->Extend("stats", stats.c_str());
}
void cmd_whowas::AddToWhoWas(userrec* user)
{
/* if whowas disabled */
if (ServerInstance->Config->WhoWasGroupSize == 0 || ServerInstance->Config->WhoWasMaxGroups == 0)
{
return;
}
whowas_users::iterator iter = whowas.find(user->nick);
if (iter == whowas.end())
{
whowas_set* n = new whowas_set;
WhoWasGroup *a = new WhoWasGroup(user);
n->push_back(a);
whowas[user->nick] = n;
whowas_fifo.push_back(std::make_pair(ServerInstance->Time(),user->nick));
if ((int)(whowas.size()) > ServerInstance->Config->WhoWasMaxGroups)
{
whowas_users::iterator iter = whowas.find(whowas_fifo[0].second);
if (iter != whowas.end())
{
whowas_set* n = (whowas_set*)iter->second;
if (n->size())
{
while (n->begin() != n->end())
{
WhoWasGroup *a = *(n->begin());
DELETE(a);
n->pop_front();
}
}
DELETE(n);
whowas.erase(iter);
}
whowas_fifo.pop_front();
}
}
else
{
whowas_set* group = (whowas_set*)iter->second;
WhoWasGroup *a = new WhoWasGroup(user);
group->push_back(a);
if ((int)(group->size()) > ServerInstance->Config->WhoWasGroupSize)
{
WhoWasGroup *a = (WhoWasGroup*)*(group->begin());
DELETE(a);
group->pop_front();
}
}
}
/* on rehash, refactor maps according to new conf values */
void cmd_whowas::PruneWhoWas(time_t t)
{
/* config values */
int groupsize = ServerInstance->Config->WhoWasGroupSize;
int maxgroups = ServerInstance->Config->WhoWasMaxGroups;
int maxkeep = ServerInstance->Config->WhoWasMaxKeep;
/* first cut the list to new size (maxgroups) and also prune entries that are timed out. */
whowas_users::iterator iter;
int fifosize;
while ((fifosize = (int)whowas_fifo.size()) > 0)
{
if (fifosize > maxgroups || whowas_fifo[0].first < t - maxkeep)
{
iter = whowas.find(whowas_fifo[0].second);
/* hopefully redundant integrity check, but added while debugging r6216 */
if (iter == whowas.end())
{
/* this should never happen, if it does maps are corrupt */
ServerInstance->Log(DEFAULT, "BUG: Whowas maps got corrupted! (1)");
return;
}
whowas_set* n = (whowas_set*)iter->second;
if (n->size())
{
while (n->begin() != n->end())
{
WhoWasGroup *a = *(n->begin());
DELETE(a);
n->pop_front();
}
}
DELETE(n);
whowas.erase(iter);
whowas_fifo.pop_front();
}
else
break;
}
/* Then cut the whowas sets to new size (groupsize) */
fifosize = (int)whowas_fifo.size();
for (int i = 0; i < fifosize; i++)
{
iter = whowas.find(whowas_fifo[0].second);
/* hopefully redundant integrity check, but added while debugging r6216 */
if (iter == whowas.end())
{
/* this should never happen, if it does maps are corrupt */
ServerInstance->Log(DEFAULT, "BUG: Whowas maps got corrupted! (2)");
return;
}
whowas_set* n = (whowas_set*)iter->second;
if (n->size())
{
int nickcount = n->size();
while (n->begin() != n->end() && nickcount > groupsize)
{
WhoWasGroup *a = *(n->begin());
DELETE(a);
n->pop_front();
nickcount--;
}
}
}
}
/* call maintain once an hour to remove expired nicks */
void cmd_whowas::MaintainWhoWas(time_t t)
{
for (whowas_users::iterator iter = whowas.begin(); iter != whowas.end(); iter++)
{
whowas_set* n = (whowas_set*)iter->second;
if (n->size())
{
while ((n->begin() != n->end()) && ((*n->begin())->signon < t - ServerInstance->Config->WhoWasMaxKeep))
{
WhoWasGroup *a = *(n->begin());
DELETE(a);
n->erase(n->begin());
}
}
}
}
cmd_whowas::~cmd_whowas()
{
if (timer)
{
ServerInstance->Timers->DelTimer(timer);
}
whowas_users::iterator iter;
int fifosize;
while ((fifosize = (int)whowas_fifo.size()) > 0)
{
iter = whowas.find(whowas_fifo[0].second);
/* hopefully redundant integrity check, but added while debugging r6216 */
if (iter == whowas.end())
{
/* this should never happen, if it does maps are corrupt */
ServerInstance->Log(DEFAULT, "BUG: Whowas maps got corrupted! (3)");
return;
}
whowas_set* n = (whowas_set*)iter->second;
if (n->size())
{
while (n->begin() != n->end())
{
WhoWasGroup *a = *(n->begin());
DELETE(a);
n->pop_front();
}
}
DELETE(n);
whowas.erase(iter);
whowas_fifo.pop_front();
}
}
WhoWasGroup::WhoWasGroup(userrec* user) : host(NULL), dhost(NULL), ident(NULL), server(NULL), gecos(NULL), signon(user->signon)
{
this->host = strdup(user->host);
this->dhost = strdup(user->dhost);
this->ident = strdup(user->ident);
this->server = user->server;
this->gecos = strdup(user->fullname);
}
WhoWasGroup::~WhoWasGroup()
{
if (host)
free(host);
if (dhost)
free(dhost);
if (ident)
free(ident);
if (gecos)
free(gecos);
}
/* every hour, run this function which removes all entries older than Config->WhoWasMaxKeep */
void WhoWasMaintainTimer::Tick(time_t t)
{
command_t* whowas_command = ServerInstance->Parser->GetHandler("WHOWAS");
if (whowas_command)
{
std::deque<classbase*> params;
whowas_command->HandleInternal(WHOWAS_MAINTAIN, params);
}
}
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