/* * ircd-ratbox: A slightly useful ircd. * m_whois.c: Shows who a user is. * * 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 "client.h" #include "hash.h" #include "channel.h" #include "hash.h" #include "ircd.h" #include "numeric.h" #include "s_conf.h" #include "s_user.h" #include "s_serv.h" #include "send.h" #include "match.h" #include "logger.h" #include "msg.h" #include "parse.h" #include "modules.h" #include "hook.h" #include "s_newconf.h" #include "ratelimit.h" #include "s_assert.h" static const char whois_desc[] = "Provides the WHOIS command to display information about a user"; static void do_whois(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]); static void single_whois(struct Client *source_p, struct Client *target_p, int operspy); static void m_whois(struct MsgBuf *, struct Client *, struct Client *, int, const char **); static void ms_whois(struct MsgBuf *, struct Client *, struct Client *, int, const char **); struct Message whois_msgtab = { "WHOIS", 0, 0, 0, 0, {mg_unreg, {m_whois, 2}, {ms_whois, 2}, mg_ignore, mg_ignore, {m_whois, 2}} }; int doing_whois_hook; int doing_whois_global_hook; int doing_whois_channel_visibility_hook; int doing_whois_show_idle_hook; mapi_clist_av1 whois_clist[] = { &whois_msgtab, NULL }; mapi_hlist_av1 whois_hlist[] = { { "doing_whois", &doing_whois_hook }, { "doing_whois_global", &doing_whois_global_hook }, { "doing_whois_channel_visibility", &doing_whois_channel_visibility_hook }, { "doing_whois_show_idle", &doing_whois_show_idle_hook }, { NULL, NULL } }; DECLARE_MODULE_AV2(whois, NULL, NULL, whois_clist, whois_hlist, NULL, NULL, NULL, whois_desc); /* * m_whois * parv[1] = nickname masklist */ static void m_whois(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) { static time_t last_used = 0; if(parc > 2) { if(EmptyString(parv[2])) { sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN), me.name, source_p->name); return; } if(!IsOperGeneral(source_p)) { /* seeing as this is going across servers, we should limit it */ if((last_used + ConfigFileEntry.pace_wait_simple) > rb_current_time() || !ratelimit_client(source_p, 2)) { sendto_one(source_p, form_str(RPL_LOAD2HI), me.name, source_p->name, "WHOIS"); sendto_one_numeric(source_p, RPL_ENDOFWHOIS, form_str(RPL_ENDOFWHOIS), parv[2]); return; } else last_used = rb_current_time(); } if(hunt_server(client_p, source_p, ":%s WHOIS %s :%s", 1, parc, parv) != HUNTED_ISME) return; parv[1] = parv[2]; } do_whois(client_p, source_p, parc, parv); } /* * ms_whois * parv[1] = server to reply * parv[2] = nickname to whois */ static void ms_whois(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) { struct Client *target_p; /* note: early versions of ratbox allowed users to issue a remote * whois with a blank parv[2], so we cannot treat it as a protocol * violation. --anfl */ if(parc < 3 || EmptyString(parv[2])) { sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN), me.name, source_p->name); return; } /* check if parv[1] exists */ if((target_p = find_client(parv[1])) == NULL) { sendto_one_numeric(source_p, ERR_NOSUCHSERVER, form_str(ERR_NOSUCHSERVER), IsDigit(parv[1][0]) ? "*" : parv[1]); return; } /* if parv[1] isnt my client, or me, someone else is supposed * to be handling the request.. so send it to them */ if(!MyClient(target_p) && !IsMe(target_p)) { sendto_one(target_p, ":%s WHOIS %s :%s", get_id(source_p, target_p), get_id(target_p, target_p), parv[2]); return; } /* ok, the target is either us, or a client on our server, so perform the whois * but first, parv[1] == server to perform the whois on, parv[2] == person * to whois, so make parv[1] = parv[2] so do_whois is ok -- fl_ */ parv[1] = parv[2]; do_whois(client_p, source_p, parc, parv); } /* do_whois * * inputs - pointer to * output - * side effects - */ static void do_whois(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) { struct Client *target_p; char *nick; char *p = NULL; int operspy = 0; nick = LOCAL_COPY(parv[1]); if((p = strchr(nick, ','))) *p = '\0'; if(IsOperSpy(source_p) && *nick == '!') { operspy = 1; nick++; } target_p = find_named_person(nick); if(target_p != NULL) { if(operspy) { char buffer[BUFSIZE]; snprintf(buffer, sizeof(buffer), "%s!%s@%s %s", target_p->name, target_p->username, target_p->host, target_p->servptr->name); report_operspy(source_p, "WHOIS", buffer); } single_whois(source_p, target_p, operspy); } else sendto_one_numeric(source_p, ERR_NOSUCHNICK, form_str(ERR_NOSUCHNICK), nick); sendto_one_numeric(source_p, RPL_ENDOFWHOIS, form_str(RPL_ENDOFWHOIS), parv[1]); } /* * single_whois() * * Inputs - source_p client to report to * - target_p client to report on * Output - if found return 1 * Side Effects - do a single whois on given client * writing results to source_p */ static void single_whois(struct Client *source_p, struct Client *target_p, int operspy) { char buf[BUFSIZE]; hook_data_client hdata; struct sockaddr_in ip4; if(target_p->user == NULL) { s_assert(0); return; } sendto_one_numeric(source_p, RPL_WHOISUSER, form_str(RPL_WHOISUSER), target_p->name, target_p->username, target_p->host, target_p->info); send_multiline_init(source_p, " ", form_str(RPL_WHOISCHANNELS), get_id(&me, source_p), get_id(source_p, source_p), target_p->name); /* Make sure it won't overflow when sending it to the client * in full names; note that serverhiding may require more space * for a different server name (not done here) -- jilles */ send_multiline_remote_pad(source_p, &me); send_multiline_remote_pad(source_p, source_p); hdata.client = source_p; hdata.target = target_p; if (!IsService(target_p)) { hook_data_channel_visibility hdata_vis; rb_dlink_node *ps, *pt; struct Channel *chptr; struct membership *ms, *mt; hdata_vis.client = source_p; hdata_vis.target = target_p; ITER_COMM_CHANNELS(ps, pt, source_p->user->channel.head, target_p->user->channel.head, ms, mt, chptr) { if (mt == NULL) continue; hdata_vis.chptr = chptr; hdata_vis.clientms = ms; hdata_vis.targetms = mt; hdata_vis.approved = ms != NULL || PubChannel(chptr); call_hook(doing_whois_channel_visibility_hook, &hdata_vis); if(hdata_vis.approved || operspy) { send_multiline_item(source_p, "%s%s%s", hdata_vis.approved ? "" : "!", find_channel_status(mt, 1), chptr->chname); } } } send_multiline_fini(source_p, NULL); sendto_one_numeric(source_p, RPL_WHOISSERVER, form_str(RPL_WHOISSERVER), target_p->name, target_p->servptr->name, target_p->servptr->info); if(target_p->user->away) sendto_one_numeric(source_p, RPL_AWAY, form_str(RPL_AWAY), target_p->name, target_p->user->away); char *s = NULL; if (IsService(target_p)) { s = ConfigFileEntry.servicestring; } if (!EmptyString(target_p->user->opername) && IsOper(target_p)) { if (target_p == source_p || HasPrivilege(source_p, "oper:privs")) { const char *privset = "(missing)"; if (target_p->user->privset != NULL) privset = target_p->user->privset->name; snprintf(buf, sizeof buf, "is opered as %s, privset %s", target_p->user->opername, privset); s = buf; } else if (IsOper(source_p) && SeesOper(target_p, source_p)) { snprintf(buf, sizeof buf, "is opered as %s", target_p->user->opername); s = buf; } else if (!ConfigFileEntry.hide_opers_in_whois && SeesOper(target_p, source_p)) { s = IsAdmin(target_p) ? GlobalSetOptions.adminstring : GlobalSetOptions.operstring; } } if (s != NULL) { sendto_one_numeric(source_p, RPL_WHOISOPERATOR, form_str(RPL_WHOISOPERATOR), target_p->name, s); } if(IsSecureClient(target_p)) { char cbuf[256] = "is using a secure connection"; if (MyClient(target_p) && target_p->localClient->cipher_string != NULL && (!ConfigFileEntry.tls_ciphers_oper_only || source_p == target_p || IsOper(source_p))) rb_snprintf_append(cbuf, sizeof(cbuf), " [%s]", target_p->localClient->cipher_string); sendto_one_numeric(source_p, RPL_WHOISSECURE, form_str(RPL_WHOISSECURE), target_p->name, cbuf); if((source_p == target_p || IsOperGeneral(source_p)) && target_p->certfp != NULL) sendto_one_numeric(source_p, RPL_WHOISCERTFP, form_str(RPL_WHOISCERTFP), target_p->name, target_p->certfp); } if(MyClient(target_p)) { if (IsDynSpoof(target_p) && (HasPrivilege(source_p, "auspex:hostname") || source_p == target_p)) { /* trick here: show a nonoper their own IP if * dynamic spoofed but not if auth{} spoofed * -- jilles */ ClearDynSpoof(target_p); sendto_one_numeric(source_p, RPL_WHOISHOST, form_str(RPL_WHOISHOST), target_p->name, target_p->orighost, show_ip(source_p, target_p) ? target_p->sockhost : "255.255.255.255"); SetDynSpoof(target_p); } else if(ConfigFileEntry.use_whois_actually && show_ip(source_p, target_p)) sendto_one_numeric(source_p, RPL_WHOISACTUALLY, form_str(RPL_WHOISACTUALLY), target_p->name, target_p->sockhost); if (GET_SS_FAMILY(&target_p->localClient->ip) == AF_INET6 && (show_ip(source_p, target_p) || (source_p == target_p && !IsIPSpoof(target_p))) && rb_ipv4_from_ipv6((struct sockaddr_in6 *)&target_p->localClient->ip, &ip4)) { rb_inet_ntop_sock((struct sockaddr *)&ip4, buf, sizeof buf); sendto_one_numeric(source_p, RPL_WHOISTEXT, "%s :Underlying IPv4 is %s", target_p->name, buf); } /* fire the doing_whois_show_idle hook to allow modules to tell us whether to show the idle time */ hook_data_client_approval hdata_showidle; hdata_showidle.client = source_p; hdata_showidle.target = target_p; hdata_showidle.approved = WHOIS_IDLE_SHOW; call_hook(doing_whois_show_idle_hook, &hdata_showidle); sendto_one_numeric(source_p, RPL_WHOISIDLE, form_str(RPL_WHOISIDLE), target_p->name, hdata_showidle.approved ? (long)(rb_current_time() - target_p->localClient->last) : 0, (unsigned long)target_p->localClient->firsttime); if (hdata_showidle.approved == WHOIS_IDLE_HIDE && (source_p->umodes & user_modes['I'])) /* if the source has hidden their idle time, notify the source that they can't view others' idle times either */ sendto_one_numeric(source_p, RPL_WHOISTEXT, form_str(RPL_WHOISTEXT), target_p->name, "has a hidden idle time because your own idle time is hidden"); else if (hdata_showidle.approved != WHOIS_IDLE_SHOW) /* if the target has hidden their idle time, notify the source */ sendto_one_numeric(source_p, RPL_WHOISTEXT, form_str(RPL_WHOISTEXT), target_p->name, "is hiding their idle time"); } else { if (IsDynSpoof(target_p) && (HasPrivilege(source_p, "auspex:hostname") || source_p == target_p)) { ClearDynSpoof(target_p); sendto_one_numeric(source_p, RPL_WHOISHOST, form_str(RPL_WHOISHOST), target_p->name, target_p->orighost, show_ip(source_p, target_p) && !EmptyString(target_p->sockhost) && strcmp(target_p->sockhost, "0")? target_p->sockhost : "255.255.255.255"); SetDynSpoof(target_p); } else if(ConfigFileEntry.use_whois_actually && show_ip(source_p, target_p) && !EmptyString(target_p->sockhost) && strcmp(target_p->sockhost, "0")) { sendto_one_numeric(source_p, RPL_WHOISACTUALLY, form_str(RPL_WHOISACTUALLY), target_p->name, target_p->sockhost); } } /* doing_whois_hook must only be called for local clients, * doing_whois_global_hook must only be called for local targets */ /* it is important that these are called *before* RPL_ENDOFWHOIS is * sent, services compatibility code depends on it. --anfl */ if(MyClient(source_p)) call_hook(doing_whois_hook, &hdata); else call_hook(doing_whois_global_hook, &hdata); }