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[READ-ONLY] Mirror of https://github.com/VibeDevelopers/Comet.
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7152815291530153115321533153415351536153715381539154015411542/* * ircd-ratbox: A slightly useful ircd. * m_join.c: Joins 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 */
#include "stdinc.h"#include "channel.h"#include "client.h"#include "hash.h"#include "match.h"#include "ircd.h"#include "numeric.h"#include "send.h"#include "s_serv.h"#include "s_conf.h"#include "s_newconf.h"#include "msg.h"#include "parse.h"#include "modules.h"#include "packet.h"#include "chmode.h"#include "ratelimit.h"#include "s_assert.h"#include "hook.h"#include "batch.h"#include "response.h"
static const char join_desc[] = "Provides the JOIN and TS6 SJOIN commands to facilitate joining and creating channels";
static void m_join(struct MsgBuf *, struct Client *, struct Client *, int, const char **);static void ms_join(struct MsgBuf *, struct Client *, struct Client *, int, const char **);static void ms_sjoin(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static void moddeinit(void);static void begin_netjoin_batch(void *);static void complete_netjoin_batch(void *);static void abort_netjoin_batch(void *);
static int h_can_create_channel;static int h_channel_join;static int h_channel_lowerts;
struct Message join_msgtab = { "JOIN", 0, 0, 0, 0, {mg_unreg, {m_join, 2}, {ms_join, 2}, mg_ignore, mg_ignore, {m_join, 2}}};
struct Message sjoin_msgtab = { "SJOIN", 0, 0, 0, 0, {mg_unreg, mg_ignore, mg_ignore, {ms_sjoin, 4}, mg_ignore, mg_ignore}};
mapi_clist_av1 join_clist[] = { &join_msgtab, &sjoin_msgtab, NULL };
mapi_hlist_av1 join_hlist[] = { { "can_create_channel", &h_can_create_channel }, { "channel_join", &h_channel_join }, { "channel_lowerts", &h_channel_lowerts }, { NULL, NULL },};
mapi_hfn_list_av1 join_hfn_list[] = { { "server_introduced", begin_netjoin_batch }, { "server_eob", complete_netjoin_batch }, { "client_exit", abort_netjoin_batch }, { NULL, NULL },};
DECLARE_MODULE_AV2(join, NULL, moddeinit, join_clist, join_hlist, join_hfn_list, NULL, NULL, join_desc);
static void do_join_0(struct Client *client_p, struct Client *source_p);static bool check_channel_name_loc(struct Client *source_p, const char *name);static void send_join_error(struct Client *source_p, int numeric, const char *name);
static char *set_final_mode(char *mbuf, char *parabuf, struct Mode *mode, struct Mode *oldmode);static void remove_our_modes(struct Channel *chptr, struct Client *source_p);
static void remove_ban_list(struct Channel *chptr, struct Client *source_p, rb_dlink_list * list, char c, int mems);
static rb_dlink_list netjoin_batches = {0};
struct NetjoinBatch{ char id[BATCH_ID_LEN]; /* Batch reference ID */ struct Client *target; /* The server being introduced */};
/* Check what we will forward to, without sending any notices to the user * -- jilles */static struct Channel *check_forward(struct Client *source_p, struct Channel *chptr, char *key, int *err){ int depth = 0, i; const char *next = NULL;
/* The caller (m_join) is only interested in the reason * for the original channel. */ if ((*err = can_join(source_p, chptr, key, &next)) == 0) return chptr;
/* User is +Q, or forwarding disabled */ if (IsNoForward(source_p) || !ConfigChannel.use_forward) return NULL;
while (depth < 16) { if (next == NULL) return NULL;
chptr = find_channel(next); /* Can only forward to existing channels */ if (chptr == NULL) return NULL; /* Already on there... but don't send the original reason for * being unable to join. It isn't their fault they're already * on the channel, and it looks hostile otherwise. * --Elizafox */ if (IsMember(source_p, chptr)) { *err = ERR_USERONCHANNEL; /* I'm borrowing this for now. --Elizafox */ return NULL; } /* Juped. Sending a warning notice would be unfair */ if (hash_find_resv(chptr->chname)) return NULL; /* Don't forward to +Q channel */ if (chptr->mode.mode & MODE_DISFORWARD) return NULL;
i = can_join(source_p, chptr, key, &next); if (i == 0) return chptr; depth++; }
return NULL;}
/* * m_join * parv[1] = channel * parv[2] = channel password (key) */static voidm_join(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]){ static char jbuf[BUFSIZE]; struct Channel *chptr = NULL, *chptr2 = NULL; struct ConfItem *aconf; char *name; char *key = NULL; const char *modes; int i, flags = 0; char *p = NULL, *p2 = NULL; char *chanlist; char *mykey;
jbuf[0] = '\0';
/* always batch a labeled-response since they could be trying to join multiple channels; * easier to have one code path than trying to save some bandwidth in the single-channel case */ begin_local_response_batch();
/* rebuild the list of channels theyre supposed to be joining. * this code has a side effect of losing keys, but.. */ chanlist = LOCAL_COPY(parv[1]); for(name = rb_strtok_r(chanlist, ",", &p); name; name = rb_strtok_r(NULL, ",", &p)) { /* check the length and name of channel is ok */ if(!check_channel_name_loc(source_p, name)) { sendto_one_numeric(source_p, ERR_BADCHANNAME, form_str(ERR_BADCHANNAME), (unsigned char *) name); continue; }
/* join 0 parts all channels */ if(*name == '0' && (name[1] == ',' || name[1] == '\0') && name == chanlist) { rb_strlcpy(jbuf, "0", sizeof(jbuf)); continue; }
/* check it begins with a valid channel prefix per policy. */ else if (!IsChannelName(name)) { sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL, form_str(ERR_NOSUCHCHANNEL), name); continue; }
/* see if its resv'd */ if(!IsExemptResv(source_p) && (aconf = hash_find_resv(name))) { sendto_one_numeric(source_p, ERR_BADCHANNAME, form_str(ERR_BADCHANNAME), name);
/* dont warn for opers */ if(!IsExemptJupe(source_p) && !IsOper(source_p)) sendto_realops_snomask(SNO_SPY, L_NETWIDE, "User %s (%s@%s) is attempting to join locally juped channel %s (%s)", source_p->name, source_p->username, source_p->orighost, name, aconf->passwd); /* dont update tracking for jupe exempt users, these * are likely to be spamtrap leaves */ else if(IsExemptJupe(source_p)) aconf->port--;
continue; }
if(splitmode && !IsOperGeneral(source_p) && (*name != '&') && ConfigChannel.no_join_on_split) { sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE), me.name, source_p->name, name); continue; }
if(*jbuf) (void) strcat(jbuf, ","); (void) rb_strlcat(jbuf, name, sizeof(jbuf)); }
if(parc > 2) { mykey = LOCAL_COPY(parv[2]); key = rb_strtok_r(mykey, ",", &p2); }
for(name = rb_strtok_r(jbuf, ",", &p); name; key = (key) ? rb_strtok_r(NULL, ",", &p2) : NULL, name = rb_strtok_r(NULL, ",", &p)) { hook_data_channel_activity hook_info;
/* JOIN 0 simply parts all channels the user is in */ if(*name == '0' && !atoi(name)) { if(source_p->user->channel.head == NULL) continue;
do_join_0(&me, source_p); continue; }
/* look for the channel */ if((chptr = find_channel(name)) != NULL) { if(IsMember(source_p, chptr)) continue;
flags = 0; } else { hook_data_can_create_channel moduledata;
moduledata.client = source_p; moduledata.name = name; moduledata.approved = 0;
call_hook(h_can_create_channel, &moduledata);
if(moduledata.approved != 0) { if(moduledata.approved != ERR_CUSTOM) send_join_error(source_p, moduledata.approved, name); continue; }
if(splitmode && !IsOperGeneral(source_p) && (*name != '&') && ConfigChannel.no_create_on_split) { sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE), me.name, source_p->name, name); continue; }
flags = CHFL_CHANOP; }
if((rb_dlink_list_length(&source_p->user->channel) >= (unsigned long) ConfigChannel.max_chans_per_user) && (!IsExtendChans(source_p) || (rb_dlink_list_length(&source_p->user->channel) >= (unsigned long) ConfigChannel.max_chans_per_user_large))) { sendto_one(source_p, form_str(ERR_TOOMANYCHANNELS), me.name, source_p->name, name); continue; }
if(chptr == NULL) /* If I already have a chptr, no point doing this */ { chptr = get_or_create_channel(source_p, name, NULL);
if(chptr == NULL) { sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE), me.name, source_p->name, name); continue; } }
/* If check_forward returns NULL, they couldn't join and there wasn't a usable forward channel. */ if((chptr2 = check_forward(source_p, chptr, key, &i)) == NULL) { /* might be wrong, but is there any other better location for such? * see extensions/chm_operonly.c for other comments on this * -- dwr */ if(i != ERR_CUSTOM) send_join_error(source_p, i, name); continue; } else if(chptr != chptr2) sendto_one_numeric(source_p, ERR_LINKCHANNEL, form_str(ERR_LINKCHANNEL), name, chptr2->chname);
chptr = chptr2;
if(flags == 0 && !IsOperGeneral(source_p) && !IsExemptSpambot(source_p)) check_spambot_warning(source_p, name);
/* add the user to the channel */ add_user_to_channel(chptr, source_p, flags); if (chptr->mode.join_num && rb_current_time() - chptr->join_delta >= chptr->mode.join_time) { chptr->join_count = 0; chptr->join_delta = rb_current_time(); } chptr->join_count++;
/* credit user for join */ credit_client_join(source_p);
/* we send the user their join here, because we could have to * send a mode out next. */ send_channel_join(chptr, source_p);
/* its a new channel, set +nt and burst. */ if(flags & CHFL_CHANOP) { chptr->channelts = rb_current_time(); chptr->mode.mode |= ConfigChannel.autochanmodes; modes = channel_modes(chptr, &me);
sendto_channel_local(&me, ONLY_CHANOPS, chptr, ":%s MODE %s %s", me.name, chptr->chname, modes);
sendto_server(client_p, chptr, CAP_TS6, NOCAPS, ":%s SJOIN %ld %s %s :@%s", me.id, (long) chptr->channelts, chptr->chname, modes, source_p->id); } else { sendto_server(client_p, chptr, CAP_TS6, NOCAPS, ":%s JOIN %ld %s +", use_id(source_p), (long) chptr->channelts, chptr->chname); }
del_invite(chptr, source_p);
if(chptr->topic != NULL) { sendto_one(source_p, form_str(RPL_TOPIC), me.name, source_p->name, chptr->chname, chptr->topic);
sendto_one(source_p, form_str(RPL_TOPICWHOTIME), me.name, source_p->name, chptr->chname, chptr->topic_info, (long long)chptr->topic_time); }
if (NotClientCapable(source_p, CLICAP_NO_IMPLICIT_NAMES)) channel_member_names(chptr, source_p, 1);
hook_info.client = source_p; hook_info.chptr = chptr; hook_info.key = key; call_hook(h_channel_join, &hook_info); }}
/* * ms_join * parv[1] = channel TS * parv[2] = channel * parv[3] = "+", formerly channel modes but now unused * alternatively, a single "0" parameter parts all channels */static voidms_join(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]){ static char modebuf[MODEBUFLEN]; static char parabuf[MODEBUFLEN]; struct Channel *chptr; static struct Mode mode; time_t oldts; time_t newts; bool isnew; bool keep_our_modes = true; rb_dlink_node *ptr, *next_ptr; char *mbuf;
/* special case for join 0 */ if((parv[1][0] == '0') && (parv[1][1] == '\0') && parc == 2) { do_join_0(client_p, source_p); return; }
if(parc < 4) return;
if(!IsChannelName(parv[2]) || !check_channel_name(parv[2])) return;
/* joins for local channels cant happen. */ if(parv[2][0] == '&') return;
mbuf = modebuf; mode.key[0] = mode.forward[0] = '\0'; mode.mode = mode.limit = mode.join_num = mode.join_time = 0;
if((chptr = get_or_create_channel(source_p, parv[2], &isnew)) == NULL) return;
newts = atol(parv[1]); oldts = chptr->channelts;
/* making a channel TS0 */ if(!isnew && !newts && oldts) { sendto_channel_local(&me, ALL_MEMBERS, chptr, ":%s NOTICE %s :*** Notice -- TS for %s changed from %ld to 0", me.name, chptr->chname, chptr->chname, (long) oldts); sendto_realops_snomask(SNO_GENERAL, L_ALL, "Server %s changing TS on %s from %ld to 0", source_p->name, chptr->chname, (long) oldts); }
if(isnew) chptr->channelts = newts; else if(newts == 0 || oldts == 0) chptr->channelts = 0; else if(newts == oldts) ; else if(newts < oldts) { keep_our_modes = false; chptr->channelts = newts; }
/* Lost the TS, other side wins, so remove modes on this side */ if(!keep_our_modes) { mbuf = set_final_mode(mbuf, parabuf, &mode, &chptr->mode); chptr->mode = mode; remove_our_modes(chptr, source_p); RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->invites.head) { del_invite(chptr, ptr->data); } /* If setting -j, clear join throttle state -- jilles */ chptr->join_count = chptr->join_delta = 0; sendto_channel_local(&me, ALL_MEMBERS, chptr, ":%s NOTICE %s :*** Notice -- TS for %s changed from %ld to %ld", me.name, chptr->chname, chptr->chname, (long) oldts, (long) newts); /* Update capitalization in channel name, this makes the * capitalization timestamped like modes are -- jilles */ strcpy(chptr->chname, parv[2]); if(*modebuf != '\0') sendto_channel_local(source_p->servptr, ALL_MEMBERS, chptr, ":%s MODE %s %s %s", source_p->servptr->name, chptr->chname, modebuf, parabuf); *modebuf = *parabuf = '\0';
/* since we're dropping our modes, we want to clear the mlock as well. --nenolod */ set_channel_mlock(client_p, source_p, chptr, NULL, false);
hook_data_channel hookdata; hookdata.client = source_p; hookdata.chptr = chptr;
call_hook(h_channel_lowerts, &hookdata); }
if(!IsMember(source_p, chptr)) { add_user_to_channel(chptr, source_p, CHFL_PEON); if (chptr->mode.join_num && rb_current_time() - chptr->join_delta >= chptr->mode.join_time) { chptr->join_count = 0; chptr->join_delta = rb_current_time(); } chptr->join_count++; send_channel_join(chptr, source_p); }
sendto_server(client_p, chptr, CAP_TS6, NOCAPS, ":%s JOIN %ld %s +", source_p->id, (long) chptr->channelts, chptr->chname);}
static voidms_sjoin(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]){ static char modebuf[MODEBUFLEN]; static char parabuf[MODEBUFLEN]; static char buf_uid[BUFSIZE]; static const char empty_modes[] = "0"; struct Channel *chptr; struct Client *target_p, *fakesource_p; time_t newts; time_t oldts; static struct Mode mode, *oldmode; const char *modes; int args = 0; bool keep_our_modes = true; bool keep_new_modes = true; int fl; bool isnew; int mlen_uid; int len_uid; int len; int joins = 0; const char *s; char *ptr_uid; char *p; int i, joinc = 0, timeslice = 0; static char empty[] = ""; rb_dlink_node *ptr, *next_ptr; char *mbuf; int pargs; const char *para[MAXMODEPARAMS]; struct NetjoinBatch *batch = NULL; struct MsgTag batch_tag = { "batch", NULL, CLICAP_BATCH };
if(parc < 5) return;
if(!IsChannelName(parv[2]) || !check_channel_name(parv[2])) return;
/* SJOIN's for local channels can't happen. */ if(*parv[2] == '&') return;
modebuf[0] = parabuf[0] = mode.key[0] = mode.forward[0] = '\0'; pargs = mode.mode = mode.limit = mode.join_num = mode.join_time = 0;
/* Hide connecting server on netburst -- jilles */ if (ConfigServerHide.flatten_links && !HasSentEob(source_p)) fakesource_p = &me; else fakesource_p = source_p;
mbuf = modebuf; newts = atol(parv[1]);
RB_DLINK_FOREACH(ptr, netjoin_batches.head) { batch = ptr->data; if (batch->target == source_p) { batch_tag.value = batch->id; break; } }
s = parv[3]; while (*s) { switch (*(s++)) { case 'f': rb_strlcpy(mode.forward, parv[4 + args], sizeof(mode.forward)); args++; if(parc < 5 + args) return; break; case 'j': sscanf(parv[4 + args], "%d:%d", &joinc, ×lice); args++; mode.join_num = joinc; mode.join_time = timeslice; if(parc < 5 + args) return; break; case 'k': rb_strlcpy(mode.key, parv[4 + args], sizeof(mode.key)); args++; if(parc < 5 + args) return; break; case 'l': mode.limit = atoi(parv[4 + args]); args++; if(parc < 5 + args) return; break; default: if(chmode_flags[(int) *s] != 0) { mode.mode |= chmode_flags[(int) *s]; } } }
if(parv[args + 4]) { s = parv[args + 4];
/* remove any leading spaces */ while (*s == ' ') s++; } else s = "";
if((chptr = get_or_create_channel(source_p, parv[2], &isnew)) == NULL) return;
oldts = chptr->channelts; oldmode = &chptr->mode;
if(!isnew && !newts && oldts) { sendto_channel_local(&me, ALL_MEMBERS, chptr, ":%s NOTICE %s :*** Notice -- TS for %s " "changed from %ld to 0", me.name, chptr->chname, chptr->chname, (long) oldts); sendto_realops_snomask(SNO_GENERAL, L_ALL, "Server %s changing TS on %s from %ld to 0", source_p->name, chptr->chname, (long) oldts); }
if(isnew) chptr->channelts = newts;
else if(newts == 0 || oldts == 0) chptr->channelts = 0; else if(newts == oldts) ; else if(newts < oldts) { keep_our_modes = false; chptr->channelts = newts; } else keep_new_modes = false;
if(!keep_new_modes) mode = *oldmode; else if(keep_our_modes) { mode.mode |= oldmode->mode; if(oldmode->limit > mode.limit) mode.limit = oldmode->limit; if(strcmp(mode.key, oldmode->key) < 0) rb_strlcpy(mode.key, oldmode->key, sizeof(mode.key)); if(oldmode->join_num > mode.join_num || (oldmode->join_num == mode.join_num && oldmode->join_time > mode.join_time)) { mode.join_num = oldmode->join_num; mode.join_time = oldmode->join_time; } if(irccmp(mode.forward, oldmode->forward) < 0) rb_strlcpy(mode.forward, oldmode->forward, sizeof(mode.forward)); } else { /* If setting -j, clear join throttle state -- jilles */ if (!mode.join_num) chptr->join_count = chptr->join_delta = 0; }
mbuf = set_final_mode(mbuf, parabuf, &mode, oldmode); chptr->mode = mode;
/* Lost the TS, other side wins, so remove modes on this side */ if(!keep_our_modes) { remove_our_modes(chptr, fakesource_p); RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->invites.head) { del_invite(chptr, ptr->data); }
if(rb_dlink_list_length(&chptr->banlist) > 0) remove_ban_list(chptr, fakesource_p, &chptr->banlist, 'b', ALL_MEMBERS); if(rb_dlink_list_length(&chptr->exceptlist) > 0) remove_ban_list(chptr, fakesource_p, &chptr->exceptlist, 'e', ONLY_CHANOPS); if(rb_dlink_list_length(&chptr->invexlist) > 0) remove_ban_list(chptr, fakesource_p, &chptr->invexlist, 'I', ONLY_CHANOPS); if(rb_dlink_list_length(&chptr->quietlist) > 0) remove_ban_list(chptr, fakesource_p, &chptr->quietlist, 'q', ALL_MEMBERS); chptr->bants++;
sendto_channel_local(&me, ALL_MEMBERS, chptr, ":%s NOTICE %s :*** Notice -- TS for %s changed from %ld to %ld", me.name, chptr->chname, chptr->chname, (long) oldts, (long) newts); /* Update capitalization in channel name, this makes the * capitalization timestamped like modes are -- jilles */ strcpy(chptr->chname, parv[2]);
/* since we're dropping our modes, we want to clear the mlock as well. --nenolod */ set_channel_mlock(client_p, source_p, chptr, NULL, false);
hook_data_channel hookdata; hookdata.client = source_p; hookdata.chptr = chptr;
call_hook(h_channel_lowerts, &hookdata); }
if(*modebuf != '\0') sendto_channel_local(fakesource_p, ALL_MEMBERS, chptr, ":%s MODE %s %s %s", fakesource_p->name, chptr->chname, modebuf, parabuf);
*modebuf = *parabuf = '\0';
if(parv[3][0] != '0' && keep_new_modes) modes = channel_modes(chptr, source_p); else modes = empty_modes;
mlen_uid = sprintf(buf_uid, ":%s SJOIN %ld %s %s :", use_id(source_p), (long) chptr->channelts, parv[2], modes); ptr_uid = buf_uid + mlen_uid;
mbuf = modebuf; para[0] = para[1] = para[2] = para[3] = empty; pargs = 0; len_uid = 0;
/* if theres a space, theres going to be more than one nick, change the * first space to \0, so s is just the first nick, and point p to the * second nick */ if((p = strchr(s, ' ')) != NULL) { *p++ = '\0'; }
*mbuf++ = '+';
while (s) { fl = 0;
for (i = 0; i < 3; i++) { if(*s == '@') { fl |= CHFL_CHANOP; s++; } else if(*s == '%') { fl |= CHFL_HALFOP; s++; } else if(*s == '+') { fl |= CHFL_VOICE; s++; } }
/* if the client doesnt exist or is fake direction, skip. */ if(!(target_p = find_client(s)) || (target_p->from != client_p) || !IsPerson(target_p)) goto nextnick;
/* we assume for these we can fit at least one nick/uid in.. */
/* check we can fit another status+nick+space into a buffer */ if((mlen_uid + len_uid + IDLEN + 3) > (BUFSIZE - 3)) { *(ptr_uid - 1) = '\0'; sendto_server(client_p->from, NULL, CAP_TS6, NOCAPS, "%s", buf_uid); ptr_uid = buf_uid + mlen_uid; len_uid = 0; }
if(keep_new_modes) { if(fl & CHFL_CHANOP) { *ptr_uid++ = '@'; len_uid++; } if(fl & CHFL_HALFOP) { *ptr_uid++ = '%'; len_uid++; } if(fl & CHFL_VOICE) { *ptr_uid++ = '+'; len_uid++; } }
/* copy the nick to the two buffers */ len = sprintf(ptr_uid, "%s ", use_id(target_p)); ptr_uid += len; len_uid += len;
if(!keep_new_modes) fl = 0;
if(!IsMember(target_p, chptr)) { add_user_to_channel(chptr, target_p, fl); send_batched_channel_join(chptr, target_p, batch_tag.value); joins++; }
if(fl & CHFL_CHANOP) { *mbuf++ = 'o'; para[pargs++] = target_p->name;
/* a +oh user */ if(fl & CHFL_HALFOP) { if(pargs >= MAXMODEPARAMS) { *mbuf = '\0'; sendto_channel_local_tags(fakesource_p, ALL_MEMBERS, NULL, chptr, batch_tag.value == NULL ? 0 : 1, &batch_tag, ":%s MODE %s %s %s %s %s %s", fakesource_p->name, chptr->chname, modebuf, para[0], para[1], para[2], para[3]); mbuf = modebuf; *mbuf++ = '+'; para[0] = para[1] = para[2] = para[3] = NULL; pargs = 0; } *mbuf++ = 'h'; para[pargs++] = target_p->name; }
/* a +ov user.. bleh */ if(fl & CHFL_VOICE) { /* its possible the +o has filled up MAXMODEPARAMS, if so, start * a new buffer */ if(pargs >= MAXMODEPARAMS) { *mbuf = '\0'; sendto_channel_local_tags(fakesource_p, ALL_MEMBERS, NULL, chptr, batch_tag.value == NULL ? 0 : 1, &batch_tag, ":%s MODE %s %s %s %s %s %s", fakesource_p->name, chptr->chname, modebuf, para[0], para[1], para[2], para[3]); mbuf = modebuf; *mbuf++ = '+'; para[0] = para[1] = para[2] = para[3] = NULL; pargs = 0; }
*mbuf++ = 'v'; para[pargs++] = target_p->name; } } else if(fl & CHFL_HALFOP) { *mbuf++ = 'h'; para[pargs++] = target_p->name;
/* a +hv user */ if(fl & CHFL_VOICE) { if(pargs >= MAXMODEPARAMS) { *mbuf = '\0'; sendto_channel_local_tags(fakesource_p, ALL_MEMBERS, NULL, chptr, batch_tag.value == NULL ? 0 : 1, &batch_tag, ":%s MODE %s %s %s %s %s %s", fakesource_p->name, chptr->chname, modebuf, para[0], para[1], para[2], para[3]); mbuf = modebuf; *mbuf++ = '+'; para[0] = para[1] = para[2] = para[3] = NULL; pargs = 0; } *mbuf++ = 'v'; para[pargs++] = target_p->name; } } else if(fl & CHFL_VOICE) { *mbuf++ = 'v'; para[pargs++] = target_p->name; }
if(pargs >= MAXMODEPARAMS) { *mbuf = '\0'; sendto_channel_local_tags(fakesource_p, ALL_MEMBERS, NULL, chptr, batch_tag.value == NULL ? 0 : 1, &batch_tag, ":%s MODE %s %s %s %s %s %s", fakesource_p->name, chptr->chname, modebuf, para[0], para[1], para[2], para[3]); mbuf = modebuf; *mbuf++ = '+'; para[0] = para[1] = para[2] = para[3] = NULL; pargs = 0; }
nextnick: /* p points to the next nick */ s = p;
/* if there was a trailing space and p was pointing to it, then we * need to exit.. this has the side effect of breaking double spaces * in an sjoin.. but that shouldnt happen anyway */ if(s && (*s == '\0')) s = p = NULL;
/* if p was NULL due to no spaces, s wont exist due to the above, so * we cant check it for spaces.. if there are no spaces, then when * we next get here, s will be NULL */ if(s && ((p = strchr(s, ' ')) != NULL)) { *p++ = '\0'; } }
*mbuf = '\0'; if(pargs) { sendto_channel_local_tags(fakesource_p, ALL_MEMBERS, NULL, chptr, batch_tag.value == NULL ? 0 : 1, &batch_tag, ":%s MODE %s %s %s %s %s %s", fakesource_p->name, chptr->chname, modebuf, para[0], CheckEmpty(para[1]), CheckEmpty(para[2]), CheckEmpty(para[3])); }
if(!joins && !(chptr->mode.mode & MODE_PERMANENT) && isnew) { destroy_channel(chptr);
return; }
/* Keep the colon if we're sending an SJOIN without nicks -- jilles */ if (joins) { *(ptr_uid - 1) = '\0'; }
sendto_server(client_p->from, NULL, CAP_TS6, NOCAPS, "%s", buf_uid);}
/* * do_join_0 * * inputs - pointer to client doing join 0 * output - NONE * side effects - Use has decided to join 0. This is legacy * from the days when channels were numbers not names. *sigh* */static voiddo_join_0(struct Client *client_p, struct Client *source_p){ struct membership *msptr; struct Channel *chptr = NULL; rb_dlink_node *ptr;
/* Finish the flood grace period... */ if(MyClient(source_p) && !IsFloodDone(source_p)) flood_endgrace(source_p);
sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s JOIN 0", use_id(source_p));
while((ptr = source_p->user->channel.head)) { if(MyConnect(source_p) && !IsOperGeneral(source_p) && !IsExemptSpambot(source_p)) check_spambot_warning(source_p, NULL);
msptr = ptr->data; chptr = msptr->chptr; sendto_channel_local(source_p, ALL_MEMBERS, chptr, ":%s!%s@%s PART %s", source_p->name, source_p->username, source_p->host, chptr->chname); remove_user_from_channel(msptr); }}
static boolcheck_channel_name_loc(struct Client *source_p, const char *name){ const char *p;
s_assert(name != NULL);
if(EmptyString(name)) return false;
if(strlen(name) > LOC_CHANNELLEN) return false;
if(ConfigFileEntry.disable_fake_channels && !IsOperGeneral(source_p)) { for(p = name; *p; ++p) { if(!IsChanChar(*p) || IsFakeChanChar(*p)) return false; } } else { for(p = name; *p; ++p) { if(!IsChanChar(*p)) return false; } }
if(ConfigChannel.only_ascii_channels) { for(p = name; *p; ++p) if(*p < 33 || *p > 126) return false; }
return true;}
/* send_join_error() * * input - client to send to, reason, channel name * output - none * side effects - error message sent to client */static voidsend_join_error(struct Client *source_p, int numeric, const char *name){ /* This stuff is necessary because the form_str macro only * accepts constants. */ switch (numeric) {#define NORMAL_NUMERIC(i) \ case i: \ sendto_one(source_p, form_str(i), \ me.name, source_p->name, name); \ break
NORMAL_NUMERIC(ERR_BANNEDFROMCHAN); NORMAL_NUMERIC(ERR_INVITEONLYCHAN); NORMAL_NUMERIC(ERR_BADCHANNELKEY); NORMAL_NUMERIC(ERR_CHANNELISFULL); NORMAL_NUMERIC(ERR_NEEDREGGEDNICK); NORMAL_NUMERIC(ERR_THROTTLE);
case ERR_USERONCHANNEL: sendto_one_numeric(source_p, ERR_USERONCHANNEL, form_str(ERR_USERONCHANNEL), source_p->name, name); break; default: sendto_one_numeric(source_p, numeric, "%s :Cannot join channel", name); break; }}
static char *set_final_mode(char *mbuf, char *parabuf, struct Mode *mode, struct Mode *oldmode){ int dir = MODE_QUERY; char *pbuf = parabuf; int len; int i;
/* ok, first get a list of modes we need to add */ for (i = 0; i < 256; i++) { if((mode->mode & chmode_flags[i]) && !(oldmode->mode & chmode_flags[i])) { if(dir != MODE_ADD) { *mbuf++ = '+'; dir = MODE_ADD; } *mbuf++ = i; } }
/* now the ones we need to remove. */ for (i = 0; i < 256; i++) { if((oldmode->mode & chmode_flags[i]) && !(mode->mode & chmode_flags[i])) { if(dir != MODE_DEL) { *mbuf++ = '-'; dir = MODE_DEL; } *mbuf++ = i; } }
if(oldmode->limit && !mode->limit) { if(dir != MODE_DEL) { *mbuf++ = '-'; dir = MODE_DEL; } *mbuf++ = 'l'; } if(oldmode->key[0] && !mode->key[0]) { if(dir != MODE_DEL) { *mbuf++ = '-'; dir = MODE_DEL; } *mbuf++ = 'k'; len = sprintf(pbuf, "%s ", oldmode->key); pbuf += len; } if(oldmode->join_num && !mode->join_num) { if(dir != MODE_DEL) { *mbuf++ = '-'; dir = MODE_DEL; } *mbuf++ = 'j'; } if(oldmode->forward[0] && !mode->forward[0]) { if(dir != MODE_DEL) { *mbuf++ = '-'; dir = MODE_DEL; } *mbuf++ = 'f'; } if(mode->limit && oldmode->limit != mode->limit) { if(dir != MODE_ADD) { *mbuf++ = '+'; dir = MODE_ADD; } *mbuf++ = 'l'; len = sprintf(pbuf, "%d ", mode->limit); pbuf += len; } if(mode->key[0] && strcmp(oldmode->key, mode->key)) { if(dir != MODE_ADD) { *mbuf++ = '+'; dir = MODE_ADD; } *mbuf++ = 'k'; len = sprintf(pbuf, "%s ", mode->key); pbuf += len; } if(mode->join_num && (oldmode->join_num != mode->join_num || oldmode->join_time != mode->join_time)) { if(dir != MODE_ADD) { *mbuf++ = '+'; dir = MODE_ADD; } *mbuf++ = 'j'; len = sprintf(pbuf, "%d:%d ", mode->join_num, mode->join_time); pbuf += len; } if(mode->forward[0] && strcmp(oldmode->forward, mode->forward) && ConfigChannel.use_forward) { if(dir != MODE_ADD) { *mbuf++ = '+'; dir = MODE_ADD; } *mbuf++ = 'f'; len = sprintf(pbuf, "%s ", mode->forward); pbuf += len; } *mbuf = '\0';
return mbuf;}
/* * remove_our_modes * * inputs - * output - * side effects - */static voidremove_our_modes(struct Channel *chptr, struct Client *source_p){ struct membership *msptr; rb_dlink_node *ptr; char lmodebuf[MODEBUFLEN]; char *lpara[MAXMODEPARAMS]; int count = 0; int i; char *mbuf = lmodebuf;
*mbuf++ = '-';
for(i = 0; i < MAXMODEPARAMS; i++) lpara[i] = NULL;
RB_DLINK_FOREACH(ptr, chptr->members.head) { msptr = ptr->data;
if(is_chanop(msptr)) { msptr->flags &= ~CHFL_CHANOP; lpara[count++] = msptr->client_p->name; *mbuf++ = 'o';
/* +oh, might not fit so check. */ if(is_halfop(msptr)) { if(count >= MAXMODEPARAMS) { *mbuf = '\0'; sendto_channel_local(source_p, ALL_MEMBERS, chptr, ":%s MODE %s %s %s %s %s %s", source_p->name, chptr->chname, lmodebuf, lpara[0], lpara[1], lpara[2], lpara[3]); mbuf = lmodebuf; *mbuf++ = '-'; count = 0; for(i = 0; i < MAXMODEPARAMS; i++) lpara[i] = NULL; } msptr->flags &= ~CHFL_HALFOP; lpara[count++] = msptr->client_p->name; *mbuf++ = 'h'; }
/* +ov, might not fit so check. */ if(is_voiced(msptr)) { if(count >= MAXMODEPARAMS) { *mbuf = '\0'; sendto_channel_local(source_p, ALL_MEMBERS, chptr, ":%s MODE %s %s %s %s %s %s", source_p->name, chptr->chname, lmodebuf, lpara[0], lpara[1], lpara[2], lpara[3]);
/* preserve the initial '-' */ mbuf = lmodebuf; *mbuf++ = '-'; count = 0;
for(i = 0; i < MAXMODEPARAMS; i++) lpara[i] = NULL; }
msptr->flags &= ~CHFL_VOICE; lpara[count++] = msptr->client_p->name; *mbuf++ = 'v'; } } else if(is_halfop(msptr)) { msptr->flags &= ~CHFL_HALFOP; lpara[count++] = msptr->client_p->name; *mbuf++ = 'h';
/* +hv */ if(is_voiced(msptr)) { if(count >= MAXMODEPARAMS) { *mbuf = '\0'; sendto_channel_local(source_p, ALL_MEMBERS, chptr, ":%s MODE %s %s %s %s %s %s", source_p->name, chptr->chname, lmodebuf, lpara[0], lpara[1], lpara[2], lpara[3]); mbuf = lmodebuf; *mbuf++ = '-'; count = 0; for(i = 0; i < MAXMODEPARAMS; i++) lpara[i] = NULL; } msptr->flags &= ~CHFL_VOICE; lpara[count++] = msptr->client_p->name; *mbuf++ = 'v'; } } else if(is_voiced(msptr)) { msptr->flags &= ~CHFL_VOICE; lpara[count++] = msptr->client_p->name; *mbuf++ = 'v'; } else continue;
if(count >= MAXMODEPARAMS) { *mbuf = '\0'; sendto_channel_local(source_p, ALL_MEMBERS, chptr, ":%s MODE %s %s %s %s %s %s", source_p->name, chptr->chname, lmodebuf, lpara[0], lpara[1], lpara[2], lpara[3]); mbuf = lmodebuf; *mbuf++ = '-'; count = 0;
for(i = 0; i < MAXMODEPARAMS; i++) lpara[i] = NULL; } }
if(count != 0) { *mbuf = '\0'; sendto_channel_local(source_p, ALL_MEMBERS, chptr, ":%s MODE %s %s %s %s %s %s", source_p->name, chptr->chname, lmodebuf, EmptyString(lpara[0]) ? "" : lpara[0], EmptyString(lpara[1]) ? "" : lpara[1], EmptyString(lpara[2]) ? "" : lpara[2], EmptyString(lpara[3]) ? "" : lpara[3]);
}}
/* remove_ban_list() * * inputs - channel, source, list to remove, char of mode, caps needed * outputs - * side effects - given list is removed, with modes issued to local clients */static voidremove_ban_list(struct Channel *chptr, struct Client *source_p, rb_dlink_list * list, char c, int mems){ static char lmodebuf[BUFSIZE]; static char lparabuf[BUFSIZE]; struct Ban *banptr; rb_dlink_node *ptr; rb_dlink_node *next_ptr; char *pbuf; int count = 0; int cur_len, mlen, plen; char *mbuf;
pbuf = lparabuf;
cur_len = mlen = sprintf(lmodebuf, ":%s MODE %s -", source_p->name, chptr->chname); mbuf = lmodebuf + mlen;
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) { banptr = ptr->data;
/* trailing space, and the mode letter itself */ plen = strlen(banptr->banstr) + (banptr->forward ? strlen(banptr->forward) + 1 : 0) + 2;
if(count >= MAXMODEPARAMS || (cur_len + plen) > BUFSIZE - 4) { /* remove trailing space */ *mbuf = '\0'; *(pbuf - 1) = '\0';
sendto_channel_local(source_p, mems, chptr, "%s %s", lmodebuf, lparabuf);
cur_len = mlen; mbuf = lmodebuf + mlen; pbuf = lparabuf; count = 0; }
*mbuf++ = c; cur_len += plen; if (banptr->forward) pbuf += sprintf(pbuf, "%s$%s ", banptr->banstr, banptr->forward); else pbuf += sprintf(pbuf, "%s ", banptr->banstr); count++;
free_ban(banptr); }
*mbuf = '\0'; *(pbuf - 1) = '\0'; sendto_channel_local(source_p, mems, chptr, "%s %s", lmodebuf, lparabuf);
list->head = list->tail = NULL; list->length = 0;}
static voidbegin_netjoin_batch(void *arg){ /* data->target is the server being introduced */ hook_data_client *data = arg;
/* a server that is currently bursting has introduced additional downstream servers. * these will never have bursts of their own, so don't make batches for them */ if (!IsMe(data->client) && !HasSentEob(data->client)) return;
char comment[(HOSTLEN*2)+2]; struct NetjoinBatch *batch = rb_malloc(sizeof(struct NetjoinBatch));
generate_batch_id(batch->id, sizeof(batch->id)); batch->target = data->target; rb_dlinkAddAlloc(batch, &netjoin_batches);
if (ConfigServerHide.flatten_links) strcpy(comment, "*.net *.join"); else { strcpy(comment, data->target->servptr->name); strcat(comment, " "); strcat(comment, data->target->name); }
sendto_local_clients_with_capability(CLICAP_BATCH, ":%s BATCH +%s netjoin %s", me.name, batch->id, comment);}
static voidmoddeinit(void){ rb_dlink_node *ptr, *next_ptr; struct NetjoinBatch *batch = NULL;
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, netjoin_batches.head) { batch = ptr->data; sendto_local_clients_with_capability(CLICAP_BATCH, ":%s BATCH -%s", me.name, batch->id); rb_free(batch); rb_dlinkDestroy(ptr, &netjoin_batches); }}
static voidcomplete_netjoin_batch(void *arg){ /* source_p is the server that completed the burst */ struct Client *source_p = arg; rb_dlink_node *ptr, *next_ptr; struct NetjoinBatch *batch = NULL;
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, netjoin_batches.head) { batch = ptr->data; if (batch->target == source_p) { sendto_local_clients_with_capability(CLICAP_BATCH, ":%s BATCH -%s", me.name, batch->id); rb_free(batch); rb_dlinkDestroy(ptr, &netjoin_batches); return; } }}
static voidabort_netjoin_batch(void *arg){ /* data->target is the client that is exiting */ hook_data_client_exit *data = arg; rb_dlink_node *ptr, *next_ptr; struct NetjoinBatch *batch = NULL;
if (!IsServer(data->target) || HasSentEob(data->target)) return;
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, netjoin_batches.head) { batch = ptr->data; if (batch->target == data->target) { sendto_local_clients_with_capability(CLICAP_BATCH, ":%s BATCH -%s", me.name, batch->id); rb_free(batch); rb_dlinkDestroy(ptr, &netjoin_batches); return; } }}