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adx |
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/* |
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* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd). |
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* |
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* Copyright (C) 2002 by the past and present ircd coders, and others. |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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* USA |
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*/ |
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/*! \file channel.c |
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* \brief Responsible for managing channels, members, bans and topics |
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knight |
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* \version $Id$ |
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adx |
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*/ |
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#include "stdinc.h" |
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#include "tools.h" |
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#include "channel.h" |
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#include "channel_mode.h" |
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#include "client.h" |
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#include "common.h" |
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#include "hash.h" |
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#include "irc_string.h" |
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#include "sprintf_irc.h" |
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#include "ircd.h" |
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#include "list.h" |
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#include "numeric.h" |
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#include "s_serv.h" /* captab */ |
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#include "s_user.h" |
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#include "send.h" |
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#include "s_conf.h" /* ConfigFileEntry, ConfigChannel */ |
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#include "event.h" |
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#include "memory.h" |
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#include "balloc.h" |
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struct config_channel_entry ConfigChannel; |
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dlink_list global_channel_list = { NULL, NULL, 0 }; |
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dlink_list lazylink_channels = { NULL, NULL, 0 }; |
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BlockHeap *ban_heap; /*! \todo ban_heap shouldn't be a global var */ |
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static BlockHeap *topic_heap = NULL; |
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static BlockHeap *member_heap = NULL; |
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static BlockHeap *channel_heap = NULL; |
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static char buf[IRCD_BUFSIZE]; |
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static char modebuf[MODEBUFLEN]; |
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static char parabuf[MODEBUFLEN]; |
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/*! \brief Initializes the channel blockheap, adds known channel CAPAB |
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*/ |
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void |
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init_channels(void) |
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{ |
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/* |
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* XXX - These should get moved to somwhere else once we have |
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* a modular channelmode system |
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*/ |
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add_capability("EX", CAP_EX, 1); |
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add_capability("IE", CAP_IE, 1); |
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add_capability("CHW", CAP_CHW, 1); |
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channel_heap = BlockHeapCreate("channel", sizeof(struct Channel), CHANNEL_HEAP_SIZE); |
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ban_heap = BlockHeapCreate("ban", sizeof(struct Ban), BAN_HEAP_SIZE); |
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topic_heap = BlockHeapCreate("topic", TOPICLEN+1 + USERHOST_REPLYLEN, TOPIC_HEAP_SIZE); |
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member_heap = BlockHeapCreate("member", sizeof(struct Membership), CHANNEL_HEAP_SIZE*2); |
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} |
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/*! \brief adds a user to a channel by adding another link to the |
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* channels member chain. |
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* \param chptr pointer to channel to add client to |
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* \param who pointer to client (who) to add |
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* \param flags flags for chanops etc |
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* \param flood_ctrl whether to count this join in flood calculations |
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*/ |
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void |
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add_user_to_channel(struct Channel *chptr, struct Client *who, |
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unsigned int flags, int flood_ctrl) |
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{ |
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struct Membership *ms = NULL; |
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if (GlobalSetOptions.joinfloodtime > 0) |
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{ |
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if (flood_ctrl) |
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chptr->number_joined++; |
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chptr->number_joined -= (CurrentTime - chptr->last_join_time) * |
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(((float)GlobalSetOptions.joinfloodcount) / |
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(float)GlobalSetOptions.joinfloodtime); |
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if (chptr->number_joined <= 0) |
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{ |
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chptr->number_joined = 0; |
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ClearJoinFloodNoticed(chptr); |
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} |
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else if (chptr->number_joined >= GlobalSetOptions.joinfloodcount) |
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{ |
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chptr->number_joined = GlobalSetOptions.joinfloodcount; |
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if (!IsSetJoinFloodNoticed(chptr)) |
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{ |
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SetJoinFloodNoticed(chptr); |
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sendto_realops_flags(UMODE_BOTS, L_ALL, |
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"Possible Join Flooder %s on %s target: %s", |
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get_client_name(who, HIDE_IP), |
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who->servptr->name, chptr->chname); |
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} |
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} |
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chptr->last_join_time = CurrentTime; |
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} |
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ms = BlockHeapAlloc(member_heap); |
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ms->client_p = who; |
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ms->chptr = chptr; |
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ms->flags = flags; |
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dlinkAdd(ms, &ms->channode, &chptr->members); |
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if (MyConnect(who)) |
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dlinkAdd(ms, &ms->locchannode, &chptr->locmembers); |
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dlinkAdd(ms, &ms->usernode, &who->channel); |
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} |
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/*! \brief deletes an user from a channel by removing a link in the |
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* channels member chain. |
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* \param member pointer to Membership struct |
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*/ |
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void |
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remove_user_from_channel(struct Membership *member) |
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{ |
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struct Client *client_p = member->client_p; |
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struct Channel *chptr = member->chptr; |
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dlinkDelete(&member->channode, &chptr->members); |
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if (MyConnect(client_p)) |
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dlinkDelete(&member->locchannode, &chptr->locmembers); |
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dlinkDelete(&member->usernode, &client_p->channel); |
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BlockHeapFree(member_heap, member); |
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if (dlink_list_length(&chptr->members) == 0) |
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{ |
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assert(dlink_list_length(&chptr->locmembers) == 0); |
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destroy_channel(chptr); |
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} |
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} |
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/* send_members() |
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* |
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* inputs - |
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* output - NONE |
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* side effects - |
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*/ |
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static void |
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send_members(struct Client *client_p, struct Channel *chptr, |
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char *lmodebuf, char *lparabuf) |
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{ |
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struct Membership *ms; |
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dlink_node *ptr; |
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int tlen; /* length of text to append */ |
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char *t, *start; /* temp char pointer */ |
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start = t = buf + ircsprintf(buf, ":%s SJOIN %lu %s %s %s:", |
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ID_or_name(&me, client_p), |
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(unsigned long)chptr->channelts, |
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chptr->chname, lmodebuf, lparabuf); |
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DLINK_FOREACH(ptr, chptr->members.head) |
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{ |
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ms = ptr->data; |
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tlen = strlen(IsCapable(client_p, CAP_TS6) ? |
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ID(ms->client_p) : ms->client_p->name) + 1; /* nick + space */ |
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if (ms->flags & CHFL_CHANOP) |
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tlen++; |
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#ifdef HALFOPS |
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adx |
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else if (ms->flags & CHFL_HALFOP) |
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adx |
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tlen++; |
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#endif |
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if (ms->flags & CHFL_VOICE) |
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tlen++; |
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/* space will be converted into CR, but we also need space for LF.. |
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* That's why we use '- 1' here |
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* -adx */ |
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if (t + tlen - buf > sizeof(buf) - 1) |
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{ |
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*(t - 1) = '\0'; /* kill the space and terminate the string */ |
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sendto_one(client_p, "%s", buf); |
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t = start; |
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} |
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adx |
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if ((ms->flags & (CHFL_CHANOP | CHFL_HALFOP))) |
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*t++ = (!(ms->flags & CHFL_CHANOP) && IsCapable(client_p, CAP_HOPS)) ? |
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'%' : '@'; |
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if ((ms->flags & CHFL_VOICE)) |
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*t++ = '+'; |
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adx |
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if (IsCapable(client_p, CAP_TS6)) |
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strcpy(t, ID(ms->client_p)); |
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else |
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strcpy(t, ms->client_p->name); |
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t += strlen(t); |
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*t++ = ' '; |
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} |
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/* should always be non-NULL unless we have a kind of persistent channels */ |
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if (chptr->members.head != NULL) |
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t--; /* take the space out */ |
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*t = '\0'; |
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sendto_one(client_p, "%s", buf); |
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} |
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/*! \brief sends +b/+e/+I |
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* \param client_p client pointer to server |
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* \param chptr pointer to channel |
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* \param top pointer to top of mode link list to send |
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* \param flag char flag flagging type of mode. Currently this can be 'b', e' or 'I' |
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*/ |
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static void |
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send_mode_list(struct Client *client_p, struct Channel *chptr, |
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dlink_list *top, char flag) |
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{ |
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int ts5 = !IsCapable(client_p, CAP_TS6); |
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dlink_node *lp; |
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struct Ban *banptr; |
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char pbuf[IRCD_BUFSIZE]; |
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int tlen, mlen, cur_len, count = 0; |
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char *mp = NULL, *pp = pbuf; |
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if (top == NULL || top->length == 0) |
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return; |
249 |
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if (ts5) |
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mlen = ircsprintf(buf, ":%s MODE %s +", me.name, chptr->chname); |
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else |
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mlen = ircsprintf(buf, ":%s BMASK %lu %s %c :", me.id, |
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(unsigned long)chptr->channelts, chptr->chname, flag); |
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/* MODE needs additional one byte for space between buf and pbuf */ |
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cur_len = mlen + ts5; |
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mp = buf + mlen; |
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260 |
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DLINK_FOREACH(lp, top->head) |
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{ |
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banptr = lp->data; |
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264 |
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/* must add another b/e/I letter if we use MODE */ |
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tlen = banptr->len + 3 + ts5; |
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267 |
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/* |
268 |
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* send buffer and start over if we cannot fit another ban, |
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* or if the target is non-ts6 and we have too many modes in |
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* in this line. |
271 |
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*/ |
272 |
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if (cur_len + (tlen - 1) > IRCD_BUFSIZE - 2 || |
273 |
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(!IsCapable(client_p, CAP_TS6) && |
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(count >= MAXMODEPARAMS || pp - pbuf >= MODEBUFLEN))) |
275 |
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{ |
276 |
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*(pp - 1) = '\0'; /* get rid of trailing space on buffer */ |
277 |
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sendto_one(client_p, "%s%s%s", buf, ts5 ? " " : "", pbuf); |
278 |
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279 |
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cur_len = mlen + ts5; |
280 |
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mp = buf + mlen; |
281 |
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pp = pbuf; |
282 |
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count = 0; |
283 |
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} |
284 |
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285 |
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count++; |
286 |
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if (ts5) |
287 |
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{ |
288 |
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*mp++ = flag; |
289 |
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*mp = '\0'; |
290 |
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} |
291 |
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292 |
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pp += ircsprintf(pp, "%s!%s@%s ", banptr->name, banptr->username, |
293 |
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banptr->host); |
294 |
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cur_len += tlen; |
295 |
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} |
296 |
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297 |
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*(pp - 1) = '\0'; /* get rid of trailing space on buffer */ |
298 |
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sendto_one(client_p, "%s%s%s", buf, ts5 ? " " : "", pbuf); |
299 |
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} |
300 |
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301 |
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/*! \brief send "client_p" a full list of the modes for channel chptr |
302 |
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* \param client_p pointer to client client_p |
303 |
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* \param chptr pointer to channel pointer |
304 |
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*/ |
305 |
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void |
306 |
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send_channel_modes(struct Client *client_p, struct Channel *chptr) |
307 |
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{ |
308 |
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if (chptr->chname[0] != '#') |
309 |
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return; |
310 |
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311 |
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*modebuf = *parabuf = '\0'; |
312 |
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channel_modes(chptr, client_p, modebuf, parabuf); |
313 |
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send_members(client_p, chptr, modebuf, parabuf); |
314 |
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315 |
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send_mode_list(client_p, chptr, &chptr->banlist, 'b'); |
316 |
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317 |
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if (IsCapable(client_p, CAP_EX)) |
318 |
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send_mode_list(client_p, chptr, &chptr->exceptlist, 'e'); |
319 |
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if (IsCapable(client_p, CAP_IE)) |
320 |
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send_mode_list(client_p, chptr, &chptr->invexlist, 'I'); |
321 |
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} |
322 |
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323 |
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/*! \brief check channel name for invalid characters |
324 |
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* \param name pointer to channel name string |
325 |
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* \return TRUE (1) if name ok, FALSE (0) otherwise |
326 |
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*/ |
327 |
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int |
328 |
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check_channel_name(const char *name) |
329 |
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{ |
330 |
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const unsigned char *p = (const unsigned char *)name; |
331 |
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assert(name != NULL); |
332 |
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333 |
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for (; *p; ++p) |
334 |
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if (!IsChanChar(*p)) |
335 |
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return 0; |
336 |
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337 |
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return 1; |
338 |
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} |
339 |
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340 |
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void |
341 |
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remove_ban(struct Ban *bptr, dlink_list *list) |
342 |
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{ |
343 |
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dlinkDelete(&bptr->node, list); |
344 |
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345 |
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MyFree(bptr->name); |
346 |
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MyFree(bptr->username); |
347 |
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MyFree(bptr->host); |
348 |
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MyFree(bptr->who); |
349 |
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350 |
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BlockHeapFree(ban_heap, bptr); |
351 |
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} |
352 |
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353 |
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/* free_channel_list() |
354 |
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* |
355 |
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* inputs - pointer to dlink_list |
356 |
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* output - NONE |
357 |
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* side effects - |
358 |
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*/ |
359 |
|
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void |
360 |
|
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free_channel_list(dlink_list *list) |
361 |
|
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{ |
362 |
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dlink_node *ptr = NULL, *next_ptr = NULL; |
363 |
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364 |
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DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) |
365 |
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remove_ban(ptr->data, list); |
366 |
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367 |
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assert(list->tail == NULL && list->head == NULL); |
368 |
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} |
369 |
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|
370 |
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/*! \brief Get Channel block for chname (and allocate a new channel |
371 |
|
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* block, if it didn't exist before) |
372 |
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* \param client_p client pointer |
373 |
|
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* \param chname channel name |
374 |
|
|
* \param isnew pointer to int flag whether channel was newly created or not |
375 |
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* \return channel block or NULL if illegal name |
376 |
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*/ |
377 |
|
|
struct Channel * |
378 |
|
|
get_or_create_channel(struct Client *client_p, const char *chname, int *isnew) |
379 |
|
|
{ |
380 |
|
|
struct Channel *chptr = NULL; |
381 |
|
|
int len; |
382 |
|
|
|
383 |
|
|
if (EmptyString(chname)) |
384 |
|
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return NULL; |
385 |
|
|
|
386 |
|
|
if ((len = strlen(chname)) > CHANNELLEN) |
387 |
|
|
{ |
388 |
|
|
if (IsServer(client_p)) |
389 |
|
|
sendto_realops_flags(UMODE_DEBUG, L_ALL, |
390 |
|
|
"*** Long channel name from %s (%d > %d): %s", |
391 |
|
|
client_p->name, len, CHANNELLEN, chname); |
392 |
|
|
return NULL; |
393 |
|
|
} |
394 |
|
|
|
395 |
|
|
if ((chptr = hash_find_channel(chname)) != NULL) |
396 |
|
|
{ |
397 |
|
|
if (isnew != NULL) |
398 |
|
|
*isnew = 0; |
399 |
|
|
|
400 |
|
|
return chptr; |
401 |
|
|
} |
402 |
|
|
|
403 |
|
|
if (isnew != NULL) |
404 |
|
|
*isnew = 1; |
405 |
|
|
|
406 |
|
|
chptr = BlockHeapAlloc(channel_heap); |
407 |
|
|
/* doesn't hurt to set it here */ |
408 |
|
|
chptr->channelts = chptr->last_join_time = CurrentTime; |
409 |
|
|
|
410 |
|
|
strlcpy(chptr->chname, chname, sizeof(chptr->chname)); |
411 |
|
|
dlinkAdd(chptr, &chptr->node, &global_channel_list); |
412 |
|
|
|
413 |
|
|
hash_add_channel(chptr); |
414 |
|
|
|
415 |
|
|
return chptr; |
416 |
|
|
} |
417 |
|
|
|
418 |
|
|
/*! \brief walk through this channel, and destroy it. |
419 |
|
|
* \param chptr channel pointer |
420 |
|
|
*/ |
421 |
|
|
void |
422 |
|
|
destroy_channel(struct Channel *chptr) |
423 |
|
|
{ |
424 |
|
|
dlink_node *ptr = NULL, *ptr_next = NULL; |
425 |
|
|
|
426 |
|
|
DLINK_FOREACH_SAFE(ptr, ptr_next, chptr->invites.head) |
427 |
|
|
del_invite(chptr, ptr->data); |
428 |
|
|
|
429 |
|
|
/* free ban/exception/invex lists */ |
430 |
|
|
free_channel_list(&chptr->banlist); |
431 |
|
|
free_channel_list(&chptr->exceptlist); |
432 |
|
|
free_channel_list(&chptr->invexlist); |
433 |
|
|
|
434 |
|
|
/* Free the topic */ |
435 |
|
|
free_topic(chptr); |
436 |
|
|
|
437 |
|
|
dlinkDelete(&chptr->node, &global_channel_list); |
438 |
|
|
hash_del_channel(chptr); |
439 |
|
|
|
440 |
|
|
if (ServerInfo.hub) |
441 |
|
|
if ((ptr = dlinkFindDelete(&lazylink_channels, chptr))) |
442 |
|
|
free_dlink_node(ptr); |
443 |
|
|
|
444 |
|
|
BlockHeapFree(channel_heap, chptr); |
445 |
|
|
} |
446 |
|
|
|
447 |
|
|
/*! |
448 |
|
|
* \param chptr pointer to channel |
449 |
|
|
* \return string pointer "=" if public, "@" if secret else "*" |
450 |
|
|
*/ |
451 |
|
|
static const char * |
452 |
|
|
channel_pub_or_secret(struct Channel *chptr) |
453 |
|
|
{ |
454 |
|
|
if (SecretChannel(chptr)) |
455 |
|
|
return "@"; |
456 |
|
|
if (PrivateChannel(chptr)) |
457 |
|
|
return "*"; |
458 |
|
|
return "="; |
459 |
|
|
} |
460 |
|
|
|
461 |
|
|
/*! \brief lists all names on given channel |
462 |
|
|
* \param source_p pointer to client struct requesting names |
463 |
|
|
* \param chptr pointer to channel block |
464 |
|
|
* \param show_eon show ENDOFNAMES numeric or not |
465 |
|
|
* (don't want it with /names with no params) |
466 |
|
|
*/ |
467 |
|
|
void |
468 |
|
|
channel_member_names(struct Client *source_p, struct Channel *chptr, |
469 |
|
|
int show_eon) |
470 |
|
|
{ |
471 |
|
|
struct Client *target_p = NULL; |
472 |
|
|
struct Membership *ms = NULL; |
473 |
|
|
dlink_node *ptr = NULL; |
474 |
|
|
char lbuf[IRCD_BUFSIZE + 1]; |
475 |
|
|
char *t = NULL, *start = NULL; |
476 |
|
|
int tlen = 0; |
477 |
|
|
int is_member = IsMember(source_p, chptr); |
478 |
|
|
|
479 |
|
|
if (PubChannel(chptr) || is_member) |
480 |
|
|
{ |
481 |
|
|
t = lbuf + ircsprintf(lbuf, form_str(RPL_NAMREPLY), |
482 |
|
|
me.name, source_p->name, |
483 |
|
|
channel_pub_or_secret(chptr), |
484 |
|
|
chptr->chname); |
485 |
|
|
start = t; |
486 |
|
|
|
487 |
|
|
DLINK_FOREACH(ptr, chptr->members.head) |
488 |
|
|
{ |
489 |
|
|
ms = ptr->data; |
490 |
|
|
target_p = ms->client_p; |
491 |
|
|
|
492 |
|
|
if (IsInvisible(target_p) && !is_member) |
493 |
|
|
continue; |
494 |
|
|
|
495 |
|
|
tlen = strlen(target_p->name) + 1; /* nick + space */ |
496 |
|
|
|
497 |
|
|
if (ms->flags & (CHFL_CHANOP | CHFL_HALFOP | CHFL_VOICE)) |
498 |
|
|
++tlen; |
499 |
|
|
if (t + tlen - lbuf > IRCD_BUFSIZE) |
500 |
|
|
{ |
501 |
|
|
*(t - 1) = '\0'; |
502 |
|
|
sendto_one(source_p, "%s", lbuf); |
503 |
|
|
t = start; |
504 |
|
|
} |
505 |
|
|
|
506 |
|
|
t += ircsprintf(t, "%s%s ", get_member_status(ms, NO), |
507 |
|
|
target_p->name); |
508 |
|
|
} |
509 |
|
|
|
510 |
|
|
if (tlen != 0) |
511 |
|
|
{ |
512 |
|
|
*(t - 1) = '\0'; |
513 |
|
|
sendto_one(source_p, "%s", lbuf); |
514 |
|
|
} |
515 |
|
|
} |
516 |
|
|
|
517 |
|
|
if (show_eon) |
518 |
|
|
sendto_one(source_p, form_str(RPL_ENDOFNAMES), |
519 |
|
|
me.name, source_p->name, chptr->chname); |
520 |
|
|
} |
521 |
|
|
|
522 |
|
|
/*! \brief adds client to invite list |
523 |
|
|
* \param chptr pointer to channel block |
524 |
|
|
* \param who pointer to client to add invite to |
525 |
|
|
*/ |
526 |
|
|
void |
527 |
|
|
add_invite(struct Channel *chptr, struct Client *who) |
528 |
|
|
{ |
529 |
|
|
del_invite(chptr, who); |
530 |
|
|
|
531 |
|
|
/* |
532 |
|
|
* delete last link in chain if the list is max length |
533 |
|
|
*/ |
534 |
michael |
317 |
if (dlink_list_length(&who->localClient->invited) >= |
535 |
adx |
30 |
ConfigChannel.max_chans_per_user) |
536 |
michael |
317 |
del_invite(who->localClient->invited.tail->data, who); |
537 |
adx |
30 |
|
538 |
|
|
/* add client to channel invite list */ |
539 |
|
|
dlinkAdd(who, make_dlink_node(), &chptr->invites); |
540 |
|
|
|
541 |
|
|
/* add channel to the end of the client invite list */ |
542 |
michael |
317 |
dlinkAdd(chptr, make_dlink_node(), &who->localClient->invited); |
543 |
adx |
30 |
} |
544 |
|
|
|
545 |
|
|
/*! \brief Delete Invite block from channel invite list |
546 |
|
|
* and client invite list |
547 |
|
|
* \param chptr pointer to Channel struct |
548 |
|
|
* \param who pointer to client to remove invites from |
549 |
|
|
*/ |
550 |
|
|
void |
551 |
|
|
del_invite(struct Channel *chptr, struct Client *who) |
552 |
|
|
{ |
553 |
|
|
dlink_node *ptr = NULL; |
554 |
|
|
|
555 |
michael |
317 |
if ((ptr = dlinkFindDelete(&who->localClient->invited, chptr))) |
556 |
adx |
30 |
free_dlink_node(ptr); |
557 |
|
|
|
558 |
|
|
if ((ptr = dlinkFindDelete(&chptr->invites, who))) |
559 |
|
|
free_dlink_node(ptr); |
560 |
|
|
} |
561 |
|
|
|
562 |
|
|
/* get_member_status() |
563 |
|
|
* |
564 |
|
|
* inputs - pointer to struct Membership |
565 |
|
|
* - YES if we can combine different flags |
566 |
|
|
* output - string either @, +, % or "" depending on whether |
567 |
|
|
* chanop, voiced or user |
568 |
|
|
* side effects - |
569 |
|
|
* |
570 |
|
|
* NOTE: Returned string is usually a static buffer |
571 |
|
|
* (like in get_client_name) |
572 |
|
|
*/ |
573 |
|
|
const char * |
574 |
|
|
get_member_status(const struct Membership *ms, int combine) |
575 |
|
|
{ |
576 |
|
|
static char buffer[4]; |
577 |
|
|
char *p = NULL; |
578 |
|
|
|
579 |
|
|
if (ms == NULL) |
580 |
|
|
return ""; |
581 |
|
|
p = buffer; |
582 |
|
|
|
583 |
|
|
if (ms->flags & CHFL_CHANOP) |
584 |
|
|
{ |
585 |
|
|
if (!combine) |
586 |
|
|
return "@"; |
587 |
|
|
*p++ = '@'; |
588 |
|
|
} |
589 |
|
|
|
590 |
|
|
#ifdef HALFOPS |
591 |
|
|
if (ms->flags & CHFL_HALFOP) |
592 |
|
|
{ |
593 |
|
|
if (!combine) |
594 |
|
|
return "%"; |
595 |
|
|
*p++ = '%'; |
596 |
|
|
} |
597 |
|
|
#endif |
598 |
|
|
|
599 |
|
|
if (ms->flags & CHFL_VOICE) |
600 |
|
|
*p++ = '+'; |
601 |
|
|
*p = '\0'; |
602 |
|
|
|
603 |
|
|
return buffer; |
604 |
|
|
} |
605 |
|
|
|
606 |
|
|
/*! |
607 |
|
|
* \param who pointer to Client to check |
608 |
|
|
* \param list pointer to ban list to search |
609 |
|
|
* \return 1 if ban found for given n!u\@h mask, 0 otherwise |
610 |
|
|
* |
611 |
|
|
*/ |
612 |
|
|
static int |
613 |
|
|
find_bmask(const struct Client *who, const dlink_list *const list) |
614 |
|
|
{ |
615 |
|
|
const dlink_node *ptr = NULL; |
616 |
|
|
|
617 |
|
|
DLINK_FOREACH(ptr, list->head) |
618 |
|
|
{ |
619 |
|
|
const struct Ban *bp = ptr->data; |
620 |
|
|
|
621 |
|
|
if (match(bp->name, who->name) && |
622 |
|
|
match(bp->username, who->username) && |
623 |
|
|
(match(bp->host, who->host) || |
624 |
|
|
match(bp->host, who->sockhost) || |
625 |
|
|
match_cidr(bp->host, who->sockhost))) |
626 |
|
|
return 1; |
627 |
|
|
} |
628 |
|
|
|
629 |
|
|
return 0; |
630 |
|
|
} |
631 |
|
|
|
632 |
|
|
/*! |
633 |
|
|
* \param chptr pointer to channel block |
634 |
|
|
* \param who pointer to client to check access fo |
635 |
|
|
* \return 0 if not banned, 1 otherwise |
636 |
|
|
*/ |
637 |
|
|
int |
638 |
|
|
is_banned(struct Channel *chptr, struct Client *who) |
639 |
|
|
{ |
640 |
|
|
assert(IsClient(who)); |
641 |
|
|
|
642 |
|
|
return find_bmask(who, &chptr->banlist) && (!ConfigChannel.use_except || |
643 |
|
|
!find_bmask(who, &chptr->exceptlist)); |
644 |
|
|
} |
645 |
|
|
|
646 |
|
|
/*! |
647 |
|
|
* \param source_p pointer to client attempting to join |
648 |
|
|
* \param chptr pointer to channel |
649 |
|
|
* \param key key sent by client attempting to join if present |
650 |
|
|
* \return ERR_BANNEDFROMCHAN, ERR_INVITEONLYCHAN, ERR_CHANNELISFULL |
651 |
|
|
* or 0 if allowed to join. |
652 |
|
|
*/ |
653 |
|
|
int |
654 |
|
|
can_join(struct Client *source_p, struct Channel *chptr, const char *key) |
655 |
|
|
{ |
656 |
|
|
if (find_bmask(source_p, &chptr->banlist)) |
657 |
|
|
if (!ConfigChannel.use_except || !find_bmask(source_p, &chptr->exceptlist)) |
658 |
|
|
return ERR_BANNEDFROMCHAN; |
659 |
|
|
|
660 |
|
|
if (chptr->mode.mode & MODE_INVITEONLY) |
661 |
michael |
317 |
if (!dlinkFind(&source_p->localClient->invited, chptr)) |
662 |
adx |
30 |
if (!ConfigChannel.use_invex || !find_bmask(source_p, &chptr->invexlist)) |
663 |
|
|
return ERR_INVITEONLYCHAN; |
664 |
|
|
|
665 |
|
|
if (chptr->mode.key[0] && (EmptyString(key) || irccmp(chptr->mode.key, key))) |
666 |
|
|
return ERR_BADCHANNELKEY; |
667 |
|
|
|
668 |
|
|
if (chptr->mode.limit && dlink_list_length(&chptr->members) >= |
669 |
|
|
chptr->mode.limit) |
670 |
|
|
return ERR_CHANNELISFULL; |
671 |
|
|
|
672 |
|
|
return 0; |
673 |
|
|
} |
674 |
|
|
|
675 |
|
|
int |
676 |
|
|
has_member_flags(struct Membership *ms, unsigned int flags) |
677 |
|
|
{ |
678 |
|
|
if (ms != NULL) |
679 |
|
|
return ms->flags & flags; |
680 |
|
|
return 0; |
681 |
|
|
} |
682 |
|
|
|
683 |
|
|
struct Membership * |
684 |
|
|
find_channel_link(struct Client *client_p, struct Channel *chptr) |
685 |
|
|
{ |
686 |
|
|
dlink_node *ptr = NULL; |
687 |
|
|
|
688 |
|
|
if (!IsClient(client_p)) |
689 |
|
|
return NULL; |
690 |
|
|
|
691 |
|
|
DLINK_FOREACH(ptr, client_p->channel.head) |
692 |
|
|
if (((struct Membership *)ptr->data)->chptr == chptr) |
693 |
|
|
return (struct Membership *)ptr->data; |
694 |
|
|
|
695 |
|
|
return NULL; |
696 |
|
|
} |
697 |
|
|
|
698 |
|
|
/*! |
699 |
|
|
* \param chptr pointer to Channel struct |
700 |
|
|
* \param source_p pointer to Client struct |
701 |
|
|
* \return CAN_SEND_OPV if op or voiced on channel\n |
702 |
|
|
* CAN_SEND_NONOP if can send to channel but is not an op\n |
703 |
|
|
* CAN_SEND_NO if they cannot send to channel\n |
704 |
|
|
*/ |
705 |
|
|
int |
706 |
|
|
can_send(struct Channel *chptr, struct Client *source_p) |
707 |
|
|
{ |
708 |
|
|
struct Membership *ms = NULL; |
709 |
|
|
|
710 |
|
|
if (IsServer(source_p)) |
711 |
|
|
return CAN_SEND_OPV; |
712 |
|
|
|
713 |
|
|
if (MyClient(source_p) && !IsExemptResv(source_p) && |
714 |
|
|
!(IsOper(source_p) && ConfigFileEntry.oper_pass_resv) && |
715 |
|
|
(!hash_find_resv(chptr->chname) == ConfigChannel.restrict_channels)) |
716 |
|
|
return CAN_SEND_NO; |
717 |
|
|
|
718 |
|
|
if ((ms = find_channel_link(source_p, chptr)) == NULL) |
719 |
|
|
{ |
720 |
|
|
if (chptr->mode.mode & MODE_NOPRIVMSGS) |
721 |
|
|
return CAN_SEND_NO; |
722 |
|
|
} |
723 |
|
|
else |
724 |
|
|
{ |
725 |
|
|
if (ms->flags & (CHFL_CHANOP|CHFL_HALFOP|CHFL_VOICE)) |
726 |
|
|
return CAN_SEND_OPV; |
727 |
|
|
|
728 |
|
|
/* cache can send if quiet_on_ban and banned */ |
729 |
|
|
if (ConfigChannel.quiet_on_ban && MyClient(source_p)) |
730 |
|
|
{ |
731 |
|
|
if (ms->flags & CHFL_BAN_SILENCED) |
732 |
|
|
return CAN_SEND_NO; |
733 |
|
|
|
734 |
|
|
if (!(ms->flags & CHFL_BAN_CHECKED)) |
735 |
|
|
{ |
736 |
|
|
if (is_banned(chptr, source_p)) |
737 |
|
|
{ |
738 |
|
|
ms->flags |= (CHFL_BAN_CHECKED|CHFL_BAN_SILENCED); |
739 |
|
|
return CAN_SEND_NO; |
740 |
|
|
} |
741 |
|
|
|
742 |
|
|
ms->flags |= CHFL_BAN_CHECKED; |
743 |
|
|
} |
744 |
|
|
} |
745 |
|
|
} |
746 |
|
|
|
747 |
|
|
if (chptr->mode.mode & MODE_MODERATED) |
748 |
|
|
return CAN_SEND_NO; |
749 |
|
|
|
750 |
|
|
return CAN_SEND_NONOP; |
751 |
|
|
} |
752 |
|
|
|
753 |
|
|
/*! \brief Checks to see if given client can send a part message |
754 |
|
|
* \param member pointer to channel membership |
755 |
|
|
* \param chptr pointer to channel struct |
756 |
|
|
* \param source_p pointer to struct Client to check |
757 |
|
|
*/ |
758 |
|
|
int |
759 |
|
|
can_send_part(struct Membership *member, struct Channel *chptr, |
760 |
|
|
struct Client *source_p) |
761 |
|
|
{ |
762 |
|
|
if (has_member_flags(member, CHFL_CHANOP|CHFL_HALFOP)) |
763 |
|
|
return CAN_SEND_OPV; |
764 |
|
|
|
765 |
|
|
if (chptr->mode.mode & MODE_MODERATED) |
766 |
|
|
return CAN_SEND_NO; |
767 |
|
|
|
768 |
|
|
if (ConfigChannel.quiet_on_ban && MyClient(source_p) && |
769 |
|
|
is_banned(chptr, source_p)) |
770 |
|
|
return CAN_SEND_NO; |
771 |
|
|
|
772 |
|
|
return CAN_SEND_NONOP; |
773 |
|
|
} |
774 |
|
|
|
775 |
|
|
/*! \brief Updates the client's oper_warn_count_down, warns the |
776 |
|
|
* IRC operators if necessary, and updates |
777 |
|
|
* join_leave_countdown as needed. |
778 |
|
|
* \param source_p pointer to struct Client to check |
779 |
|
|
* \param name channel name or NULL if this is a part. |
780 |
|
|
*/ |
781 |
|
|
void |
782 |
|
|
check_spambot_warning(struct Client *source_p, const char *name) |
783 |
|
|
{ |
784 |
|
|
int t_delta = 0; |
785 |
|
|
int decrement_count = 0; |
786 |
|
|
|
787 |
|
|
if ((GlobalSetOptions.spam_num && |
788 |
|
|
(source_p->localClient->join_leave_count >= |
789 |
|
|
GlobalSetOptions.spam_num))) |
790 |
|
|
{ |
791 |
|
|
if (source_p->localClient->oper_warn_count_down > 0) |
792 |
|
|
source_p->localClient->oper_warn_count_down--; |
793 |
|
|
else |
794 |
|
|
source_p->localClient->oper_warn_count_down = 0; |
795 |
|
|
|
796 |
|
|
if (source_p->localClient->oper_warn_count_down == 0) |
797 |
|
|
{ |
798 |
|
|
/* Its already known as a possible spambot */ |
799 |
|
|
if (name != NULL) |
800 |
|
|
sendto_realops_flags(UMODE_BOTS, L_ALL, |
801 |
|
|
"User %s (%s@%s) trying to join %s is a possible spambot", |
802 |
|
|
source_p->name, source_p->username, |
803 |
|
|
source_p->host, name); |
804 |
|
|
else |
805 |
|
|
sendto_realops_flags(UMODE_BOTS, L_ALL, |
806 |
|
|
"User %s (%s@%s) is a possible spambot", |
807 |
|
|
source_p->name, source_p->username, |
808 |
|
|
source_p->host); |
809 |
|
|
source_p->localClient->oper_warn_count_down = OPER_SPAM_COUNTDOWN; |
810 |
|
|
} |
811 |
|
|
} |
812 |
|
|
else |
813 |
|
|
{ |
814 |
|
|
if ((t_delta = (CurrentTime - source_p->localClient->last_leave_time)) > |
815 |
|
|
JOIN_LEAVE_COUNT_EXPIRE_TIME) |
816 |
|
|
{ |
817 |
|
|
decrement_count = (t_delta / JOIN_LEAVE_COUNT_EXPIRE_TIME); |
818 |
|
|
if (decrement_count > source_p->localClient->join_leave_count) |
819 |
|
|
source_p->localClient->join_leave_count = 0; |
820 |
|
|
else |
821 |
|
|
source_p->localClient->join_leave_count -= decrement_count; |
822 |
|
|
} |
823 |
|
|
else |
824 |
|
|
{ |
825 |
|
|
if ((CurrentTime - (source_p->localClient->last_join_time)) < |
826 |
|
|
GlobalSetOptions.spam_time) |
827 |
|
|
{ |
828 |
|
|
/* oh, its a possible spambot */ |
829 |
|
|
source_p->localClient->join_leave_count++; |
830 |
|
|
} |
831 |
|
|
} |
832 |
|
|
|
833 |
|
|
if (name != NULL) |
834 |
|
|
source_p->localClient->last_join_time = CurrentTime; |
835 |
|
|
else |
836 |
|
|
source_p->localClient->last_leave_time = CurrentTime; |
837 |
|
|
} |
838 |
|
|
} |
839 |
|
|
|
840 |
|
|
/*! \brief compares usercount and servercount against their split |
841 |
|
|
* values and adjusts splitmode accordingly |
842 |
|
|
* \param unused Unused address pointer |
843 |
|
|
*/ |
844 |
|
|
void |
845 |
|
|
check_splitmode(void *unused) |
846 |
|
|
{ |
847 |
|
|
if (splitchecking && (ConfigChannel.no_join_on_split || |
848 |
|
|
ConfigChannel.no_create_on_split)) |
849 |
|
|
{ |
850 |
|
|
const unsigned int server = dlink_list_length(&global_serv_list); |
851 |
|
|
|
852 |
|
|
if (!splitmode && ((server < split_servers) || (Count.total < split_users))) |
853 |
|
|
{ |
854 |
|
|
splitmode = 1; |
855 |
|
|
|
856 |
|
|
sendto_realops_flags(UMODE_ALL,L_ALL, |
857 |
|
|
"Network split, activating splitmode"); |
858 |
|
|
eventAddIsh("check_splitmode", check_splitmode, NULL, 10); |
859 |
|
|
} |
860 |
|
|
else if (splitmode && (server > split_servers) && (Count.total > split_users)) |
861 |
|
|
{ |
862 |
|
|
splitmode = 0; |
863 |
|
|
|
864 |
|
|
sendto_realops_flags(UMODE_ALL, L_ALL, |
865 |
|
|
"Network rejoined, deactivating splitmode"); |
866 |
|
|
eventDelete(check_splitmode, NULL); |
867 |
|
|
} |
868 |
|
|
} |
869 |
|
|
} |
870 |
|
|
|
871 |
|
|
/*! \brief Allocates a new topic |
872 |
|
|
* \param chptr Channel to allocate a new topic for |
873 |
|
|
*/ |
874 |
|
|
static void |
875 |
|
|
allocate_topic(struct Channel *chptr) |
876 |
|
|
{ |
877 |
|
|
void *ptr = NULL; |
878 |
|
|
|
879 |
|
|
if (chptr == NULL) |
880 |
|
|
return; |
881 |
|
|
|
882 |
|
|
ptr = BlockHeapAlloc(topic_heap); |
883 |
|
|
|
884 |
|
|
/* Basically we allocate one large block for the topic and |
885 |
|
|
* the topic info. We then split it up into two and shove it |
886 |
|
|
* in the chptr |
887 |
|
|
*/ |
888 |
|
|
chptr->topic = ptr; |
889 |
|
|
chptr->topic_info = (char *)ptr + TOPICLEN+1; |
890 |
|
|
*chptr->topic = '\0'; |
891 |
|
|
*chptr->topic_info = '\0'; |
892 |
|
|
} |
893 |
|
|
|
894 |
|
|
void |
895 |
|
|
free_topic(struct Channel *chptr) |
896 |
|
|
{ |
897 |
|
|
void *ptr = NULL; |
898 |
|
|
assert(chptr); |
899 |
|
|
if (chptr->topic == NULL) |
900 |
|
|
return; |
901 |
|
|
|
902 |
|
|
/* |
903 |
|
|
* If you change allocate_topic you MUST change this as well |
904 |
|
|
*/ |
905 |
|
|
ptr = chptr->topic; |
906 |
|
|
BlockHeapFree(topic_heap, ptr); |
907 |
|
|
chptr->topic = NULL; |
908 |
|
|
chptr->topic_info = NULL; |
909 |
|
|
} |
910 |
|
|
|
911 |
|
|
/*! \brief Sets the channel topic for chptr |
912 |
|
|
* \param chptr Pointer to struct Channel |
913 |
|
|
* \param topic The topic string |
914 |
|
|
* \param topic_info n!u\@h formatted string of the topic setter |
915 |
|
|
* \param topicts timestamp on the topic |
916 |
|
|
*/ |
917 |
|
|
void |
918 |
|
|
set_channel_topic(struct Channel *chptr, const char *topic, |
919 |
|
|
const char *topic_info, time_t topicts) |
920 |
|
|
{ |
921 |
|
|
if (!EmptyString(topic)) |
922 |
|
|
{ |
923 |
|
|
if (chptr->topic == NULL) |
924 |
|
|
allocate_topic(chptr); |
925 |
|
|
|
926 |
|
|
strlcpy(chptr->topic, topic, TOPICLEN+1); |
927 |
|
|
strlcpy(chptr->topic_info, topic_info, USERHOST_REPLYLEN); |
928 |
|
|
chptr->topic_time = topicts; |
929 |
|
|
} |
930 |
|
|
else |
931 |
|
|
{ |
932 |
michael |
337 |
/* |
933 |
|
|
* Do not reset chptr->topic_time here, it's required for |
934 |
|
|
* bursting topics properly. |
935 |
|
|
*/ |
936 |
adx |
30 |
if (chptr->topic != NULL) |
937 |
|
|
free_topic(chptr); |
938 |
|
|
} |
939 |
|
|
} |