/* * ircd-ratbox: A slightly useful ircd. * m_part.c: Parts a user from a channel. * * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center * Copyright (C) 1996-2002 Hybrid Development Team * Copyright (C) 2002-2005 ircd-ratbox development team * * This program 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; either version 2 of the License, or * (at your option) any later version. * * 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, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 * USA */ using namespace ircd; static const char part_desc[] = "Provides the PART command to leave a channel"; static void m_part(struct MsgBuf *, struct Client *, struct Client *, int, const char **); struct Message part_msgtab = { "PART", 0, 0, 0, 0, {mg_unreg, {m_part, 2}, {m_part, 2}, mg_ignore, mg_ignore, {m_part, 2}} }; mapi_clist_av1 part_clist[] = { &part_msgtab, NULL }; DECLARE_MODULE_AV2(part, NULL, NULL, part_clist, NULL, NULL, NULL, NULL, part_desc); static void part_one_client(struct Client *client_p, struct Client *source_p, char *name, const char *reason); static bool can_send_part(struct Client *source_p, chan::chan *chptr, chan::membership *msptr); static bool do_message_hook(struct Client *source_p, chan::chan *chptr, const char **reason); /* ** m_part ** parv[1] = channel ** parv[2] = reason */ static void m_part(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) { char *p, *name; char reason[REASONLEN + 1]; char *s = LOCAL_COPY(parv[1]); reason[0] = '\0'; if(parc > 2) rb_strlcpy(reason, parv[2], sizeof(reason)); name = rb_strtok_r(s, ",", &p); /* Finish the flood grace period... */ if(MyClient(source_p) && !IsFloodDone(source_p)) flood_endgrace(source_p); while(name) { part_one_client(client_p, source_p, name, reason); name = rb_strtok_r(NULL, ",", &p); } } /* * part_one_client * * inputs - pointer to server * - pointer to source client to remove * - char pointer of name of channel to remove from * output - none * side effects - remove ONE client given the channel name */ static void part_one_client(struct Client *client_p, struct Client *source_p, char *name, const char *reason) { chan::chan *chptr; chan::membership *msptr; if((chptr = chan::get(name, std::nothrow)) == NULL) { sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL, form_str(ERR_NOSUCHCHANNEL), name); return; } msptr = get(chptr->members, *source_p, std::nothrow); if(msptr == NULL) { sendto_one_numeric(source_p, ERR_NOTONCHANNEL, form_str(ERR_NOTONCHANNEL), name); return; } if(MyConnect(source_p) && !IsOper(source_p) && !IsExemptSpambot(source_p)) chan::check_spambot_warning(source_p, NULL); /* * Remove user from the old channel (if any) * only allow /part reasons in -m chans */ if(!EmptyString(reason) && (!MyConnect(source_p) || (can_send_part(source_p, chptr, msptr) && do_message_hook(source_p, chptr, &reason)) ) ) { sendto_server(client_p, chptr, CAP_TS6, NOCAPS, ":%s PART %s :%s", use_id(source_p), chptr->name.c_str(), reason); sendto_channel_local(chan::ALL_MEMBERS, chptr, ":%s!%s@%s PART %s :%s", source_p->name, source_p->username, source_p->host, chptr->name.c_str(), reason); } else { sendto_server(client_p, chptr, CAP_TS6, NOCAPS, ":%s PART %s", use_id(source_p), chptr->name.c_str()); sendto_channel_local(chan::ALL_MEMBERS, chptr, ":%s!%s@%s PART %s", source_p->name, source_p->username, source_p->host, chptr->name.c_str()); } del(*chptr, *source_p); } /* * can_send_part - whether a part message can be sent. * * inputs: * - client parting * - channel being parted * - membership pointer * outputs: * - true if message allowed * - false if message denied * side effects: * - none. */ static bool can_send_part(struct Client *source_p, chan::chan *chptr, chan::membership *msptr) { if (!can_send(chptr, source_p, msptr)) return false; /* Allow chanops to bypass anti_spam_exit_message_time for part messages. */ if (is_chanop(msptr)) return true; return (source_p->localClient->firsttime + ConfigFileEntry.anti_spam_exit_message_time) < rb_current_time(); } /* * do_message_hook - execute the message hook on a part message reason. * * inputs: * - client parting * - channel being parted * - pointer to reason * outputs: * - true if message is allowed * - false if message is denied or message is now empty * side effects: * - reason may be modified. */ static bool do_message_hook(struct Client *source_p, chan::chan *chptr, const char **reason) { hook_data_privmsg_channel hdata; hdata.msgtype = MESSAGE_TYPE_PART; hdata.source_p = source_p; hdata.chptr = chptr; hdata.text = *reason; hdata.approved = 0; call_hook(h_privmsg_channel, &hdata); /* The reason may have been changed by a hook... */ *reason = hdata.text; return (hdata.approved == 0 && !EmptyString(*reason)); }