/* +------------------------------------+ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev. * E-mail: * * * * Written by Craig Edwards, Craig McLure, and others. * This program is free but copyrighted software; see * the file COPYING for details. * * --------------------------------------------------- */ using namespace std; #include #include #include #include #include #include #include "configreader.h" #include "inspircd.h" #include "hash_map.h" #include "users.h" #include "ctables.h" #include "globals.h" #include "modules.h" #include "dynamic.h" #include "commands.h" #include "wildcard.h" #include "mode.h" #include "xline.h" #include "inspstring.h" #include "helperfuncs.h" #include "typedefs.h" chanrec::chanrec(InspIRCd* Instance) : ServerInstance(Instance) { *name = *topic = *setby = *key = 0; created = topicset = limit = 0; internal_userlist.clear(); memset(&modes,0,64); } void chanrec::SetMode(char mode,bool mode_on) { modes[mode-65] = mode_on; if (!mode_on) this->SetModeParam(mode,"",false); } void chanrec::SetModeParam(char mode,const char* parameter,bool mode_on) { ServerInstance->Log(DEBUG,"SetModeParam called"); CustomModeList::iterator n = custom_mode_params.find(mode); if (mode_on) { if (n == custom_mode_params.end()) { custom_mode_params[mode] = strdup(parameter); ServerInstance->Log(DEBUG,"Custom mode parameter %c %s added",mode,parameter); } else { ServerInstance->Log(DEBUG, "Tried to set custom mode parameter for %c '%s' when it was already '%s'", mode, parameter, n->second); } } else { if (n != custom_mode_params.end()) { free(n->second); custom_mode_params.erase(n); } } } bool chanrec::IsModeSet(char mode) { return modes[mode-65]; } std::string chanrec::GetModeParameter(char mode) { if (mode == 'k') { return this->key; } else if (mode == 'l') { return ConvToStr(this->limit); } else { CustomModeList::iterator n = custom_mode_params.find(mode); if (n != custom_mode_params.end()) { return n->second; } return ""; } } long chanrec::GetUserCounter() { return (this->internal_userlist.size()); } void chanrec::AddUser(userrec* user) { internal_userlist[user] = user; } unsigned long chanrec::DelUser(userrec* user) { CUListIter a = internal_userlist.find(user); if (a != internal_userlist.end()) { internal_userlist.erase(a); /* And tidy any others... */ DelOppedUser(user); DelHalfoppedUser(user); DelVoicedUser(user); } return internal_userlist.size(); } bool chanrec::HasUser(userrec* user) { return (internal_userlist.find(user) != internal_userlist.end()); } void chanrec::AddOppedUser(userrec* user) { internal_op_userlist[user] = user; } void chanrec::DelOppedUser(userrec* user) { CUListIter a = internal_op_userlist.find(user); if (a != internal_op_userlist.end()) { internal_op_userlist.erase(a); return; } } void chanrec::AddHalfoppedUser(userrec* user) { internal_halfop_userlist[user] = user; } void chanrec::DelHalfoppedUser(userrec* user) { CUListIter a = internal_halfop_userlist.find(user); if (a != internal_halfop_userlist.end()) { internal_halfop_userlist.erase(a); } } void chanrec::AddVoicedUser(userrec* user) { internal_voice_userlist[user] = user; } void chanrec::DelVoicedUser(userrec* user) { CUListIter a = internal_voice_userlist.find(user); if (a != internal_voice_userlist.end()) { internal_voice_userlist.erase(a); } } CUList* chanrec::GetUsers() { return &internal_userlist; } CUList* chanrec::GetOppedUsers() { return &internal_op_userlist; } CUList* chanrec::GetHalfoppedUsers() { return &internal_halfop_userlist; } CUList* chanrec::GetVoicedUsers() { return &internal_voice_userlist; } /* * add a channel to a user, creating the record for it if needed and linking * it to the user record */ chanrec* chanrec::JoinUser(InspIRCd* Instance, userrec *user, const char* cn, bool override, const char* key) { if (!user || !cn) return NULL; int created = 0; char cname[MAXBUF]; int MOD_RESULT = 0; strlcpy(cname,cn,CHANMAX); chanrec* Ptr = Instance->FindChan(cname); if (!Ptr) { if (user->fd > -1) { MOD_RESULT = 0; FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,NULL,cname)); if (MOD_RESULT == 1) return NULL; } /* create a new one */ Ptr = new chanrec(Instance); Instance->chanlist[cname] = Ptr; strlcpy(Ptr->name, cname,CHANMAX); Ptr->modes[CM_TOPICLOCK] = Ptr->modes[CM_NOEXTERNAL] = 1; Ptr->created = Instance->Time(); *Ptr->topic = 0; strlcpy(Ptr->setby, user->nick,NICKMAX-1); Ptr->topicset = 0; Instance->Log(DEBUG,"chanrec::JoinUser(): created: %s",cname); /* * set created to 2 to indicate user * is the first in the channel * and should be given ops */ created = 2; } else { /* Already on the channel */ if (Ptr->HasUser(user)) return NULL; /* * remote users are allowed us to bypass channel modes * and bans (used by servers) */ if (IS_LOCAL(user)) /* was a check on fd > -1 */ { MOD_RESULT = 0; FOREACH_RESULT_I(Instance,I_OnUserPreJoin,OnUserPreJoin(user,Ptr,cname)); if (MOD_RESULT == 1) { return NULL; } else if (MOD_RESULT == 0) { if (*Ptr->key) { MOD_RESULT = 0; FOREACH_RESULT_I(Instance,I_OnCheckKey,OnCheckKey(user, Ptr, key ? key : "")); if (!MOD_RESULT) { if (!key) { Instance->Log(DEBUG,"chanrec::JoinUser(): no key given in JOIN"); user->WriteServ("475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name); return NULL; } else { if (strcmp(key,Ptr->key)) { Instance->Log(DEBUG,"chanrec::JoinUser(): bad key given in JOIN"); user->WriteServ("475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name); return NULL; } } } } if (Ptr->modes[CM_INVITEONLY]) { MOD_RESULT = 0; irc::string xname(Ptr->name); FOREACH_RESULT_I(Instance,I_OnCheckInvite,OnCheckInvite(user, Ptr)); if (!MOD_RESULT) { if (user->IsInvited(xname)) { /* user was invited to channel */ /* there may be an optional channel NOTICE here */ } else { user->WriteServ("473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name); return NULL; } } user->RemoveInvite(xname); } if (Ptr->limit) { MOD_RESULT = 0; FOREACH_RESULT_I(Instance,I_OnCheckLimit,OnCheckLimit(user, Ptr)); if (!MOD_RESULT) { if (Ptr->GetUserCounter() >= Ptr->limit) { user->WriteServ("471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name); return NULL; } } } if (Ptr->bans.size()) { MOD_RESULT = 0; FOREACH_RESULT_I(Instance,I_OnCheckBan,OnCheckBan(user, Ptr)); char mask[MAXBUF]; sprintf(mask,"%s!%s@%s",user->nick, user->ident, user->GetIPString()); if (!MOD_RESULT) { for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++) { /* This allows CIDR ban matching * * Full masked host Full unmasked host IP with/without CIDR */ if ((match(user->GetFullHost(),i->data)) || (match(user->GetFullRealHost(),i->data)) || (match(mask, i->data, true))) { user->WriteServ("474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name); return NULL; } } } } } } else { Instance->Log(DEBUG,"chanrec::JoinUser(): Overridden checks"); } created = 1; } for (UserChanList::const_iterator index = user->chans.begin(); index != user->chans.end(); index++) { if ((*index)->channel == NULL) { return chanrec::ForceChan(Instance, Ptr, *index, user, created); } } /* * XXX: If the user is an oper here, we can just extend their user->chans vector by one * and put the channel in here. Same for remote users which are not bound by * the channel limits. Otherwise, nope, youre boned. */ if (!IS_LOCAL(user)) /* was a check on fd < 0 */ { ucrec* a = new ucrec(); chanrec* c = chanrec::ForceChan(Instance, Ptr,a,user,created); user->chans.push_back(a); return c; } else if (*user->oper) { /* Oper allows extension up to the OPERMAXCHANS value */ if (user->chans.size() < OPERMAXCHANS) { ucrec* a = new ucrec(); chanrec* c = chanrec::ForceChan(Instance, Ptr,a,user,created); user->chans.push_back(a); return c; } } user->WriteServ("405 %s %s :You are on too many channels",user->nick, cname); if (created == 2) { Instance->Log(DEBUG,"BLAMMO, Whacking channel."); /* Things went seriously pear shaped, so take this away. bwahaha. */ chan_hash::iterator n = Instance->chanlist.find(cname); if (n != Instance->chanlist.end()) { Ptr->DelUser(user); DELETE(Ptr); Instance->chanlist.erase(n); for (unsigned int index =0; index < user->chans.size(); index++) { if (user->chans[index]->channel == Ptr) { user->chans[index]->channel = NULL; user->chans[index]->uc_modes = 0; } } } } else { for (unsigned int index =0; index < user->chans.size(); index++) { if (user->chans[index]->channel == Ptr) { user->chans[index]->channel = NULL; user->chans[index]->uc_modes = 0; } } } return NULL; } chanrec* chanrec::ForceChan(InspIRCd* Instance, chanrec* Ptr,ucrec *a,userrec* user, int created) { if (created == 2) { /* first user in is given ops */ a->uc_modes = UCMODE_OP; Ptr->AddOppedUser(user); } else { a->uc_modes = 0; } a->channel = Ptr; Ptr->AddUser(user); Ptr->WriteChannel(user,"JOIN :%s",Ptr->name); /* Major improvement by Brain - we dont need to be calculating all this pointlessly for remote users */ if (IS_LOCAL(user)) { if (Ptr->topicset) { user->WriteServ("332 %s %s :%s", user->nick, Ptr->name, Ptr->topic); user->WriteServ("333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset); } Ptr->UserList(user); user->WriteServ("366 %s %s :End of /NAMES list.", user->nick, Ptr->name); } FOREACH_MOD_I(Instance,I_OnUserJoin,OnUserJoin(user,Ptr)); return Ptr; } /* chanrec::PartUser * remove a channel from a users record, and remove the record from the hash * if the channel has become empty */ long chanrec::PartUser(userrec *user, const char* reason) { if (!user) return this->GetUserCounter(); for (unsigned int i =0; i < user->chans.size(); i++) { /* zap it from the channel list of the user */ if (user->chans[i]->channel == this) { if (reason) { FOREACH_MOD(I_OnUserPart,OnUserPart(user, this, reason)); this->WriteChannel(user, "PART %s :%s", this->name, reason); } else { FOREACH_MOD(I_OnUserPart,OnUserPart(user, this, "")); this->WriteChannel(user, "PART :%s", this->name); } user->chans[i]->uc_modes = 0; user->chans[i]->channel = NULL; break; } } if (!this->DelUser(user)) /* if there are no users left on the channel... */ { chan_hash::iterator iter = ServerInstance->chanlist.find(this->name); /* kill the record */ if (iter != ServerInstance->chanlist.end()) { ServerInstance->Log(DEBUG,"del_channel: destroyed: %s", this->name); FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this)); ServerInstance->chanlist.erase(iter); } return 0; } return this->GetUserCounter(); } long chanrec::ServerKickUser(userrec* user, const char* reason, bool triggerevents) { if (!user || !reason) return this->GetUserCounter(); if (IS_LOCAL(user)) { if (!this->HasUser(user)) { /* Not on channel */ return this->GetUserCounter(); } } if (triggerevents) { FOREACH_MOD(I_OnUserKick,OnUserKick(NULL,user,this,reason)); } for (unsigned int i =0; i < user->chans.size(); i++) { if (user->chans[i]->channel == this) { this->WriteChannelWithServ(ServerInstance->Config->ServerName, "KICK %s %s :%s", this->name, user->nick, reason); user->chans[i]->uc_modes = 0; user->chans[i]->channel = NULL; break; } } if (!this->DelUser(user)) { chan_hash::iterator iter = ServerInstance->chanlist.find(this->name); /* kill the record */ if (iter != ServerInstance->chanlist.end()) { FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this)); ServerInstance->chanlist.erase(iter); } return 0; } return this->GetUserCounter(); } long chanrec::KickUser(userrec *src, userrec *user, const char* reason) { if (!src || !user || !reason) return this->GetUserCounter(); if (IS_LOCAL(src)) { if (!this->HasUser(user)) { src->WriteServ("441 %s %s %s :They are not on that channel",src->nick, user->nick, this->name); return this->GetUserCounter(); } if ((ServerInstance->is_uline(user->server)) && (!ServerInstance->is_uline(src->server))) { src->WriteServ("482 %s %s :Only a u-line may kick a u-line from a channel.",src->nick, this->name); return this->GetUserCounter(); } int MOD_RESULT = 0; if (!ServerInstance->is_uline(src->server)) { MOD_RESULT = 0; FOREACH_RESULT(I_OnUserPreKick,OnUserPreKick(src,user,this,reason)); if (MOD_RESULT == 1) return this->GetUserCounter(); } /* Set to -1 by OnUserPreKick if explicit allow was set */ if (MOD_RESULT != -1) { FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(src,user,this,AC_KICK)); if ((MOD_RESULT == ACR_DENY) && (!ServerInstance->is_uline(src->server))) return this->GetUserCounter(); if ((MOD_RESULT == ACR_DEFAULT) || (!ServerInstance->is_uline(src->server))) { int them = this->GetStatus(src); int us = this->GetStatus(user); if ((them < STATUS_HOP) || (them < us)) { if (them == STATUS_HOP) { src->WriteServ("482 %s %s :You must be a channel operator",src->nick, this->name); } else { src->WriteServ("482 %s %s :You must be at least a half-operator",src->nick, this->name); } return this->GetUserCounter(); } } } } FOREACH_MOD(I_OnUserKick,OnUserKick(src,user,this,reason)); for (UserChanList::const_iterator i = user->chans.begin(); i != user->chans.end(); i++) { /* zap it from the channel list of the user */ if ((*i)->channel == this) { this->WriteChannel(src, "KICK %s %s :%s", this->name, user->nick, reason); (*i)->uc_modes = 0; (*i)->channel = NULL; break; } } if (!this->DelUser(user)) /* if there are no users left on the channel */ { chan_hash::iterator iter = ServerInstance->chanlist.find(this->name); /* kill the record */ if (iter != ServerInstance->chanlist.end()) { FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(this)); ServerInstance->chanlist.erase(iter); } return 0; } return this->GetUserCounter(); } void chanrec::WriteChannel(userrec* user, char* text, ...) { char textbuffer[MAXBUF]; va_list argsPtr; if (!user || !text) return; va_start(argsPtr, text); vsnprintf(textbuffer, MAXBUF, text, argsPtr); va_end(argsPtr); this->WriteChannel(user, std::string(textbuffer)); } void chanrec::WriteChannel(userrec* user, const std::string &text) { CUList *ulist = this->GetUsers(); if (!user) return; for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++) { if (i->second->fd != FD_MAGIC_NUMBER) user->WriteTo(i->second,text); } } void chanrec::WriteChannelWithServ(const char* ServName, const char* text, ...) { char textbuffer[MAXBUF]; va_list argsPtr; if (!text) return; va_start(argsPtr, text); vsnprintf(textbuffer, MAXBUF, text, argsPtr); va_end(argsPtr); this->WriteChannelWithServ(ServName, std::string(textbuffer)); } void chanrec::WriteChannelWithServ(const char* ServName, const std::string &text) { CUList *ulist = this->GetUsers(); for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++) { if (IS_LOCAL(i->second)) i->second->WriteServ(text); } } /* write formatted text from a source user to all users on a channel except * for the sender (for privmsg etc) */ void chanrec::WriteAllExceptSender(userrec* user, char status, char* text, ...) { char textbuffer[MAXBUF]; va_list argsPtr; if (!user || !text) return; va_start(argsPtr, text); vsnprintf(textbuffer, MAXBUF, text, argsPtr); va_end(argsPtr); this->WriteAllExceptSender(user, status, std::string(textbuffer)); } void chanrec::WriteAllExceptSender(userrec* user, char status, const std::string& text) { CUList *ulist; if (!user) return; switch (status) { case '@': ulist = this->GetOppedUsers(); break; case '%': ulist = this->GetHalfoppedUsers(); break; case '+': ulist = this->GetVoicedUsers(); break; default: ulist = this->GetUsers(); break; } for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++) { if ((IS_LOCAL(i->second)) && (user != i->second)) i->second->WriteFrom(user,text); } } /* * return a count of the users on a specific channel accounting for * invisible users who won't increase the count. e.g. for /LIST */ int chanrec::CountInvisible() { int count = 0; CUList *ulist= this->GetUsers(); for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++) { if (!(i->second->modes[UM_INVISIBLE])) count++; } return count; } char* chanrec::ChanModes(bool showkey) { static char scratch[MAXBUF]; static char sparam[MAXBUF]; char* offset = scratch; std::string extparam = ""; *scratch = '\0'; *sparam = '\0'; /* This was still iterating up to 190, chanrec::custom_modes is only 64 elements -- Om */ for(int n = 0; n < 64; n++) { if(this->modes[n]) { *offset++ = n + 65; extparam = ""; switch (n) { case CM_KEY: extparam = (showkey ? this->key : ""); break; case CM_LIMIT: extparam = ConvToStr(this->limit); break; case CM_NOEXTERNAL: case CM_TOPICLOCK: case CM_INVITEONLY: case CM_MODERATED: case CM_SECRET: case CM_PRIVATE: /* We know these have no parameters */ break; default: extparam = this->GetModeParameter(n + 65); break; } if (extparam != "") { charlcat(sparam,' ',MAXBUF); strlcat(sparam,extparam.c_str(),MAXBUF); } } } /* Null terminate scratch */ *offset = '\0'; strlcat(scratch,sparam,MAXBUF); return scratch; } /* compile a userlist of a channel into a string, each nick seperated by * spaces and op, voice etc status shown as @ and +, and send it to 'user' */ void chanrec::UserList(userrec *user) { char list[MAXBUF]; size_t dlen, curlen; dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name); int numusers = 0; char* ptr = list + dlen; CUList *ulist= this->GetUsers(); /* Improvement by Brain - this doesnt change in value, so why was it inside * the loop? */ bool has_user = this->HasUser(user); for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++) { if ((!has_user) && (i->second->modes[UM_INVISIBLE])) { /* * user is +i, and source not on the channel, does not show * nick in NAMES list */ continue; } size_t ptrlen = snprintf(ptr, MAXBUF, "%s%s ", this->GetStatusChar(i->second), i->second->nick); curlen += ptrlen; ptr += ptrlen; numusers++; if (curlen > (480-NICKMAX)) { /* list overflowed into multiple numerics */ user->WriteServ(list); /* reset our lengths */ dlen = curlen = snprintf(list,MAXBUF,"353 %s = %s :", user->nick, this->name); ptr = list + dlen; ptrlen = 0; numusers = 0; } } /* if whats left in the list isnt empty, send it */ if (numusers) { user->WriteServ(list); } } long chanrec::GetMaxBans() { std::string x; for (std::map::iterator n = ServerInstance->Config->maxbans.begin(); n != ServerInstance->Config->maxbans.end(); n++) { x = n->first; if (match(this->name,x.c_str())) { return n->second; } } return 64; } /* returns the status character for a given user on a channel, e.g. @ for op, * % for halfop etc. If the user has several modes set, the highest mode * the user has must be returned. */ const char* chanrec::GetStatusChar(userrec *user) { for (std::vector::const_iterator i = user->chans.begin(); i != user->chans.end(); i++) { if ((*i)->channel == this) { if (((*i)->uc_modes & UCMODE_OP) > 0) { return "@"; } if (((*i)->uc_modes & UCMODE_HOP) > 0) { return "%"; } if (((*i)->uc_modes & UCMODE_VOICE) > 0) { return "+"; } return ""; } } return ""; } int chanrec::GetStatusFlags(userrec *user) { for (std::vector::const_iterator i = user->chans.begin(); i != user->chans.end(); i++) { if ((*i)->channel == this) { return (*i)->uc_modes; } } return 0; } int chanrec::GetStatus(userrec *user) { if (ServerInstance->is_uline(user->server)) return STATUS_OP; for (std::vector::const_iterator i = user->chans.begin(); i != user->chans.end(); i++) { if ((*i)->channel == this) { if (((*i)->uc_modes & UCMODE_OP) > 0) { return STATUS_OP; } if (((*i)->uc_modes & UCMODE_HOP) > 0) { return STATUS_HOP; } if (((*i)->uc_modes & UCMODE_VOICE) > 0) { return STATUS_VOICE; } return STATUS_NORMAL; } } return STATUS_NORMAL; }