diff options
author | Attila Molnar <attilamolnar@hush.com> | 2014-03-05 15:41:06 +0100 |
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committer | Attila Molnar <attilamolnar@hush.com> | 2014-03-05 15:41:06 +0100 |
commit | c67d3103e9f7397f0ab9631bf07a5e5547deb2c3 (patch) | |
tree | 00fdb8d6c56405d99803838d39e1404247d753ce /src/coremods/core_whowas.cpp | |
parent | 5613d701785b61e09a2327bdea41acdd25cb9ef5 (diff) |
Move src/commands/cmd_*.cpp to src/coremods[/core_*]/
Diffstat (limited to 'src/coremods/core_whowas.cpp')
-rw-r--r-- | src/coremods/core_whowas.cpp | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/src/coremods/core_whowas.cpp b/src/coremods/core_whowas.cpp new file mode 100644 index 000000000..0a3a994a8 --- /dev/null +++ b/src/coremods/core_whowas.cpp @@ -0,0 +1,272 @@ +/* + * InspIRCd -- Internet Relay Chat Daemon + * + * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org> + * Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org> + * Copyright (C) 2008 Craig Edwards <craigedwards@brainbox.cc> + * Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net> + * + * This file is part of InspIRCd. InspIRCd is free software: you can + * redistribute it and/or modify it under the terms of the GNU General Public + * License as published by the Free Software Foundation, version 2. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS + * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more + * details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + + +#include "inspircd.h" +#include "commands/cmd_whowas.h" + +CommandWhowas::CommandWhowas( Module* parent) + : Command(parent, "WHOWAS", 1) + , GroupSize(0), MaxGroups(0), MaxKeep(0) +{ + syntax = "<nick>{,<nick>}"; + Penalty = 2; +} + +CmdResult CommandWhowas::Handle (const std::vector<std::string>& parameters, User* user) +{ + /* if whowas disabled in config */ + if (this->GroupSize == 0 || this->MaxGroups == 0) + { + user->WriteNumeric(ERR_UNKNOWNCOMMAND, "%s :This command has been disabled.", name.c_str()); + return CMD_FAILURE; + } + + whowas_users::iterator i = whowas.find(assign(parameters[0])); + + if (i == whowas.end()) + { + user->WriteNumeric(ERR_WASNOSUCHNICK, "%s :There was no such nickname", parameters[0].c_str()); + } + else + { + whowas_set* grp = i->second; + if (!grp->empty()) + { + for (whowas_set::iterator ux = grp->begin(); ux != grp->end(); ux++) + { + WhoWasGroup* u = *ux; + + user->WriteNumeric(RPL_WHOWASUSER, "%s %s %s * :%s", parameters[0].c_str(), + u->ident.c_str(),u->dhost.c_str(),u->gecos.c_str()); + + if (user->HasPrivPermission("users/auspex")) + user->WriteNumeric(RPL_WHOWASIP, "%s :was connecting from *@%s", + parameters[0].c_str(), u->host.c_str()); + + std::string signon = InspIRCd::TimeString(u->signon); + bool hide_server = (!ServerInstance->Config->HideWhoisServer.empty() && !user->HasPrivPermission("servers/auspex")); + user->WriteNumeric(RPL_WHOISSERVER, "%s %s :%s", parameters[0].c_str(), (hide_server ? ServerInstance->Config->HideWhoisServer.c_str() : u->server.c_str()), signon.c_str()); + } + } + else + { + user->WriteNumeric(ERR_WASNOSUCHNICK, "%s :There was no such nickname", parameters[0].c_str()); + } + } + + user->WriteNumeric(RPL_ENDOFWHOWAS, "%s :End of WHOWAS", parameters[0].c_str()); + return CMD_SUCCESS; +} + +std::string CommandWhowas::GetStats() +{ + int whowas_size = 0; + int whowas_bytes = 0; + for (whowas_users::iterator i = whowas.begin(); i != whowas.end(); ++i) + { + whowas_set* n = i->second; + whowas_size += n->size(); + whowas_bytes += (sizeof(whowas_set) + ( sizeof(WhoWasGroup) * n->size() ) ); + } + return "Whowas entries: " +ConvToStr(whowas_size)+" ("+ConvToStr(whowas_bytes)+" bytes)"; +} + +void CommandWhowas::AddToWhoWas(User* user) +{ + /* if whowas disabled */ + if (this->GroupSize == 0 || this->MaxGroups == 0) + { + return; + } + + // Insert nick if it doesn't exist + // 'first' will point to the newly inserted element or to the existing element with an equivalent key + std::pair<whowas_users::iterator, bool> ret = whowas.insert(std::make_pair(irc::string(user->nick.c_str()), static_cast<whowas_set*>(NULL))); + + if (ret.second) // If inserted + { + // This nick is new, create a list for it and add the first record to it + whowas_set* n = new whowas_set; + n->push_back(new WhoWasGroup(user)); + ret.first->second = n; + + // Add this nick to the fifo too + whowas_fifo.push_back(std::make_pair(ServerInstance->Time(), ret.first->first)); + + if (whowas.size() > this->MaxGroups) + { + // Too many nicks, remove the nick which was inserted the longest time ago from both the map and the fifo + whowas_users::iterator it = whowas.find(whowas_fifo.front().second); + if (it != whowas.end()) + { + whowas_set* set = it->second; + for (whowas_set::iterator i = set->begin(); i != set->end(); ++i) + delete *i; + + delete set; + whowas.erase(it); + } + whowas_fifo.pop_front(); + } + } + else + { + // We've met this nick before, add a new record to the list + whowas_set* set = ret.first->second; + set->push_back(new WhoWasGroup(user)); + + // If there are too many records for this nick, remove the oldest (front) + if (set->size() > this->GroupSize) + { + delete set->front(); + set->pop_front(); + } + } +} + +/* on rehash, refactor maps according to new conf values */ +void CommandWhowas::Prune() +{ + time_t min = ServerInstance->Time() - this->MaxKeep; + + /* first cut the list to new size (maxgroups) and also prune entries that are timed out. */ + while (!whowas_fifo.empty()) + { + if ((whowas_fifo.size() > this->MaxGroups) || (whowas_fifo.front().first < min)) + { + whowas_users::iterator iter = whowas.find(whowas_fifo.front().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->Logs->Log("WHOWAS", LOG_DEFAULT, "BUG: Whowas maps got corrupted! (1)"); + return; + } + + whowas_set* set = iter->second; + for (whowas_set::iterator i = set->begin(); i != set->end(); ++i) + delete *i; + + delete set; + whowas.erase(iter); + whowas_fifo.pop_front(); + } + else + break; + } + + /* Then cut the whowas sets to new size (groupsize) */ + for (whowas_users::iterator i = whowas.begin(); i != whowas.end(); ++i) + { + whowas_set* n = i->second; + while (n->size() > this->GroupSize) + { + delete n->front(); + n->pop_front(); + } + } +} + +/* call maintain once an hour to remove expired nicks */ +void CommandWhowas::Maintain() +{ + time_t min = ServerInstance->Time() - this->MaxKeep; + for (whowas_users::iterator i = whowas.begin(); i != whowas.end(); ++i) + { + whowas_set* set = i->second; + while (!set->empty() && set->front()->signon < min) + { + delete set->front(); + set->pop_front(); + } + } +} + +CommandWhowas::~CommandWhowas() +{ + for (whowas_users::iterator i = whowas.begin(); i != whowas.end(); ++i) + { + whowas_set* set = i->second; + for (whowas_set::iterator j = set->begin(); j != set->end(); ++j) + delete *j; + + delete set; + } +} + +WhoWasGroup::WhoWasGroup(User* user) : host(user->host), dhost(user->dhost), ident(user->ident), + server(user->server->GetName()), gecos(user->fullname), signon(user->signon) +{ +} + +class ModuleWhoWas : public Module +{ + CommandWhowas cmd; + + public: + ModuleWhoWas() : cmd(this) + { + } + + void OnGarbageCollect() + { + // Remove all entries older than MaxKeep + cmd.Maintain(); + } + + void OnUserQuit(User* user, const std::string& message, const std::string& oper_message) + { + cmd.AddToWhoWas(user); + } + + ModResult OnStats(char symbol, User* user, string_list &results) + { + if (symbol == 'z') + results.push_back("249 "+user->nick+" :"+cmd.GetStats()); + + return MOD_RES_PASSTHRU; + } + + void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE + { + ConfigTag* tag = ServerInstance->Config->ConfValue("whowas"); + unsigned int NewGroupSize = tag->getInt("groupsize", 10, 0, 10000); + unsigned int NewMaxGroups = tag->getInt("maxgroups", 10240, 0, 1000000); + unsigned int NewMaxKeep = tag->getDuration("maxkeep", 3600, 3600); + + if ((NewGroupSize == cmd.GroupSize) && (NewMaxGroups == cmd.MaxGroups) && (NewMaxKeep == cmd.MaxKeep)) + return; + + cmd.GroupSize = NewGroupSize; + cmd.MaxGroups = NewMaxGroups; + cmd.MaxKeep = NewMaxKeep; + cmd.Prune(); + } + + Version GetVersion() + { + return Version("WHOWAS", VF_VENDOR); + } +}; + +MODULE_INIT(ModuleWhoWas) |