/* * 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 "common.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_serv.h" #include "send.h" #include "match.h" #include "s_conf.h" #include "logger.h" #include "msg.h" #include "parse.h" #include "modules.h" #include "hook.h" #include "s_newconf.h" #include "ipv4_from_ipv6.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; 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 }, { 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(!IsOper(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]; rb_dlink_node *ptr; struct membership *msptr; struct Channel *chptr; int cur_len = 0; int mlen; char *t; int tlen; hook_data_client hdata; int extra_space = 0; #ifdef RB_IPV6 struct sockaddr_in ip4; #endif 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); cur_len = mlen = sprintf(buf, 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 */ if (!MyConnect(source_p)) { extra_space = strlen(source_p->name) - 9; if (extra_space < 0) extra_space = 0; extra_space += strlen(me.name) - 2; /* make sure >= 0 */ cur_len += extra_space; } t = buf + mlen; hdata.client = source_p; hdata.target = target_p; if (!IsService(target_p)) { RB_DLINK_FOREACH(ptr, target_p->user->channel.head) { msptr = ptr->data; chptr = msptr->chptr; hdata.chptr = chptr; hdata.approved = ShowChannel(source_p, chptr); call_hook(doing_whois_channel_visibility_hook, &hdata); if(hdata.approved || operspy) { if((cur_len + strlen(chptr->chname) + 3) > (BUFSIZE - 5)) { sendto_one(source_p, "%s", buf); cur_len = mlen + extra_space; t = buf + mlen; } tlen = sprintf(t, "%s%s%s ", hdata.approved ? "" : "!", find_channel_status(msptr, 1), chptr->chname); t += tlen; cur_len += tlen; } } } if(cur_len > mlen + extra_space) sendto_one(source_p, "%s", buf); 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); if(IsOper(target_p) && (!ConfigFileEntry.hide_opers_in_whois || IsOper(source_p))) { sendto_one_numeric(source_p, RPL_WHOISOPERATOR, form_str(RPL_WHOISOPERATOR), target_p->name, IsService(target_p) ? ConfigFileEntry.servicestring : (IsAdmin(target_p) ? GlobalSetOptions.adminstring : GlobalSetOptions.operstring)); } if(MyClient(target_p) && !EmptyString(target_p->localClient->opername) && IsOper(source_p)) { char buf[512]; snprintf(buf, sizeof(buf), "is opered as %s, privset %s", target_p->localClient->opername, target_p->localClient->privset->name); sendto_one_numeric(source_p, RPL_WHOISSPECIAL, form_str(RPL_WHOISSPECIAL), target_p->name, buf); } if(IsSSLClient(target_p)) { char cbuf[256] = "is using a secure connection"; if (MyClient(target_p) && target_p->localClient->cipher_string != NULL) 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 || IsOper(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) && (IsOper(source_p) || 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); #ifdef RB_IPV6 if (GET_SS_FAMILY(&target_p->localClient->ip) == AF_INET6 && (show_ip(source_p, target_p) || (source_p == target_p && !IsIPSpoof(target_p))) && 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); } #endif /* RB_IPV6 */ sendto_one_numeric(source_p, RPL_WHOISIDLE, form_str(RPL_WHOISIDLE), target_p->name, (long)(rb_current_time() - target_p->localClient->last), (unsigned long)target_p->localClient->firsttime); } else { if (IsDynSpoof(target_p) && (IsOper(source_p) || 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); }