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-rw-r--r--src/commands/cmd_whowas.cpp348
1 files changed, 348 insertions, 0 deletions
diff --git a/src/commands/cmd_whowas.cpp b/src/commands/cmd_whowas.cpp
new file mode 100644
index 000000000..005a23489
--- /dev/null
+++ b/src/commands/cmd_whowas.cpp
@@ -0,0 +1,348 @@
+/* +------------------------------------+
+ * | 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 "commands/cmd_whowas.h"
+
+WhoWasMaintainTimer * timer;
+
+extern "C" DllExport Command* init_command(InspIRCd* Instance)
+{
+ return new CommandWhowas(Instance);
+}
+
+CommandWhowas::CommandWhowas(InspIRCd* Instance) : Command(Instance, "WHOWAS", 0, 1, false, 2)
+{
+ syntax = "<nick>{,<nick>}";
+ timer = new WhoWasMaintainTimer(Instance, 3600);
+ Instance->Timers->AddTimer(timer);
+}
+
+CmdResult CommandWhowas::Handle (const char** parameters, int pcnt, User* 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 CommandWhowas::HandleInternal(const unsigned int id, const std::deque<classbase*> &parameters)
+{
+ switch (id)
+ {
+ case WHOWAS_ADD:
+ AddToWhoWas((User*)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 CommandWhowas::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 CommandWhowas::AddToWhoWas(User* 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 CommandWhowas::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 CommandWhowas::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());
+ }
+ }
+ }
+}
+
+CommandWhowas::~CommandWhowas()
+{
+ 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(User* 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* whowas_command = ServerInstance->Parser->GetHandler("WHOWAS");
+ if (whowas_command)
+ {
+ std::deque<classbase*> params;
+ whowas_command->HandleInternal(WHOWAS_MAINTAIN, params);
+ }
+}
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