X-Git-Url: http://git.pk910.de/?p=ircu2.10.12-pk.git;a=blobdiff_plain;f=ircd%2Fs_misc.c;fp=ircd%2Fs_misc.c;h=111e9c7dc56508c11028a717367c1fd604c31dc9;hp=0000000000000000000000000000000000000000;hb=0400a5a6479398d82526785c18c0df8bc8b92dce;hpb=d17e10da972ce5776c60b4c317267c6abe0e1ead diff --git a/ircd/s_misc.c b/ircd/s_misc.c new file mode 100644 index 0000000..111e9c7 --- /dev/null +++ b/ircd/s_misc.c @@ -0,0 +1,608 @@ +/* + * IRC - Internet Relay Chat, ircd/s_misc.c (formerly ircd/date.c) + * Copyright (C) 1990 Jarkko Oikarinen and + * University of Oulu, Computing Center + * + * See file AUTHORS in IRC package for additional names of + * the programmers. + * + * 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 1, 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ +/** @file + * @brief Miscellaneous support functions. + * @version $Id$ + */ +#include "config.h" + +#include "s_misc.h" +#include "IPcheck.h" +#include "channel.h" +#include "client.h" +#include "hash.h" +#include "ircd.h" +#include "ircd_alloc.h" +#include "ircd_features.h" +#include "ircd_log.h" +#include "ircd_reply.h" +#include "ircd_snprintf.h" +#include "ircd_string.h" +#include "list.h" +#include "match.h" +#include "msg.h" +#include "numeric.h" +#include "numnicks.h" +#include "parse.h" +#include "querycmds.h" +#include "res.h" +#include "s_auth.h" +#include "s_bsd.h" +#include "s_conf.h" +#include "s_debug.h" +#include "s_stats.h" +#include "s_user.h" +#include "send.h" +#include "struct.h" +#include "sys.h" +#include "uping.h" +#include "userload.h" + +/* #include -- Now using assert in ircd_log.h */ +#include +#include +#include +#include +#include +#include + +/** Array of English month names (0 = January). */ +static char *months[] = { + "January", "February", "March", "April", + "May", "June", "July", "August", + "September", "October", "November", "December" +}; + +/** Array of English day names (0 = Sunday). */ +static char *weekdays[] = { + "Sunday", "Monday", "Tuesday", "Wednesday", + "Thursday", "Friday", "Saturday" +}; + +/* + * stats stuff + */ +/** Global statistics structure. */ +static struct ServerStatistics ircst; +/** Public pointer to global statistics structure. */ +struct ServerStatistics* ServerStats = &ircst; + +/** Formats a Unix time as a readable string. + * @param clock Unix time to format (0 means #CurrentTime). + * @return Pointer to a static buffer containing something like + * "Sunday January 1 2000 -- 09:30 +01:00" + */ +char *date(time_t clock) +{ + static char buf[80], plus; + struct tm *lt, *gm; + struct tm gmbuf; + int minswest; + + if (!clock) + clock = CurrentTime; + gm = gmtime(&clock); + memcpy(&gmbuf, gm, sizeof(gmbuf)); + gm = &gmbuf; + lt = localtime(&clock); + + /* There is unfortunately no clean portable way to extract time zone + * offset information, so do ugly things. + */ + minswest = (gm->tm_hour - lt->tm_hour) * 60 + (gm->tm_min - lt->tm_min); + if (lt->tm_yday != gm->tm_yday) + { + if ((lt->tm_yday > gm->tm_yday && lt->tm_year == gm->tm_year) || + (lt->tm_yday < gm->tm_yday && lt->tm_year != gm->tm_year)) + minswest -= 24 * 60; + else + minswest += 24 * 60; + } + + plus = (minswest > 0) ? '-' : '+'; + if (minswest < 0) + minswest = -minswest; + + sprintf(buf, "%s %s %d %d -- %02d:%02d %c%02d:%02d", + weekdays[lt->tm_wday], months[lt->tm_mon], lt->tm_mday, + 1900 + lt->tm_year, lt->tm_hour, lt->tm_min, + plus, minswest / 60, minswest % 60); + + return buf; +} + +/** Like ctime() but with no trailing newline. Also, it takes + * the time value as parameter, instead of pointer to it. + * @param value Unix time to format. + * @return Pointer to a static buffer containing formatted time. + */ +char *myctime(time_t value) +{ + /* Use a secondary buffer in case ctime() would not replace an + * overwritten newline. + */ + static char buf[28]; + char *p; + + strcpy(buf, ctime(&value)); + if ((p = strchr(buf, '\n')) != NULL) + *p = '\0'; + + return buf; +} + +/** Return the name of the client for various tracking and admin + * purposes. The main purpose of this function is to return the + * "socket host" name of the client, if that differs from the + * advertised name (other than case). But, this can be used on any + * client structure. + * @param sptr Client to operate on. + * @param showip If non-zero, append [username\@text-ip] to name. + * @return Either cli_name(\a sptr) or a static buffer. + */ +const char* get_client_name(const struct Client* sptr, int showip) +{ + static char nbuf[HOSTLEN * 2 + USERLEN + 5]; + + if (!MyConnect(sptr) || !showip) + return cli_name(sptr); + ircd_snprintf(0, nbuf, sizeof(nbuf), "%s[%s@%s]", cli_name(sptr), + IsIdented(sptr) ? cli_username(sptr) : "", + cli_sock_ip(sptr)); + return nbuf; +} + +/** + * Exit one client, local or remote. Assuming for local client that + * all dependents already have been removed, and socket is closed. + * @param bcptr Client being (s)quitted. + * @param comment The QUIT comment to send. + */ +/* Rewritten by Run - 24 sept 94 */ +static void exit_one_client(struct Client* bcptr, const char* comment) +{ + struct SLink *lp; + struct Ban *bp; + + if (cli_serv(bcptr) && cli_serv(bcptr)->client_list) /* Was SetServerYXX called ? */ + ClearServerYXX(bcptr); /* Removes server from server_list[] */ + if (IsUser(bcptr)) { + /* + * clear out uping requests + */ + if (IsUPing(bcptr)) + uping_cancel(bcptr, 0); + /* + * Stop a running /LIST clean + */ + if (MyUser(bcptr) && cli_listing(bcptr)) { + MyFree(cli_listing(bcptr)); + cli_listing(bcptr) = NULL; + } + /* + * If a person is on a channel, send a QUIT notice + * to every client (person) on the same channel (so + * that the client can show the "**signoff" message). + * (Note: The notice is to the local clients *only*) + */ + sendcmdto_common_channels_butone(bcptr, CMD_QUIT, NULL, ":%s", comment); + + remove_user_from_all_channels(bcptr); + + /* Clean up invitefield */ + while ((lp = cli_user(bcptr)->invited)) + del_invite(bcptr, lp->value.chptr); + + /* Clean up silencefield */ + while ((bp = cli_user(bcptr)->silence)) { + cli_user(bcptr)->silence = bp->next; + free_ban(bp); + } + + /* Clean up snotice lists */ + if (MyUser(bcptr)) + set_snomask(bcptr, ~0, SNO_DEL); + + if (IsInvisible(bcptr)) { + assert(UserStats.inv_clients > 0); + --UserStats.inv_clients; + } + if (IsOper(bcptr)) { + assert(UserStats.opers > 0); + --UserStats.opers; + } + if (MyConnect(bcptr)) + Count_clientdisconnects(bcptr, UserStats); + else + Count_remoteclientquits(UserStats, bcptr); + } + else if (IsServer(bcptr)) + { + /* Remove downlink list node of uplink */ + remove_dlink(&(cli_serv(cli_serv(bcptr)->up))->down, cli_serv(bcptr)->updown); + cli_serv(bcptr)->updown = 0; + + if (MyConnect(bcptr)) + Count_serverdisconnects(UserStats); + else + Count_remoteserverquits(UserStats); + } + else if (IsMe(bcptr)) + { + sendto_opmask_butone(0, SNO_OLDSNO, "ERROR: tried to exit me! : %s", + comment); + return; /* ...must *never* exit self! */ + } + else if (IsUnknown(bcptr) || IsConnecting(bcptr) || IsHandshake(bcptr)) + Count_unknowndisconnects(UserStats); + + /* + * Update IPregistry + */ + if (IsIPChecked(bcptr)) + IPcheck_disconnect(bcptr); + + /* + * Remove from serv->client_list + * NOTE: user is *always* NULL if this is a server + */ + if (cli_user(bcptr)) { + assert(!IsServer(bcptr)); + /* bcptr->user->server->serv->client_list[IndexYXX(bcptr)] = NULL; */ + RemoveYXXClient(cli_user(bcptr)->server, cli_yxx(bcptr)); + } + + /* Remove bcptr from the client list */ +#ifdef DEBUGMODE + if (hRemClient(bcptr) != 0) + Debug((DEBUG_ERROR, "%p !in tab %s[%s] %p %p %p %d %d %p", + bcptr, cli_name(bcptr), cli_from(bcptr) ? cli_sockhost(cli_from(bcptr)) : "??host", + cli_from(bcptr), cli_next(bcptr), cli_prev(bcptr), cli_fd(bcptr), + cli_status(bcptr), cli_user(bcptr))); +#else + hRemClient(bcptr); +#endif + remove_client_from_list(bcptr); +} + +/* exit_downlinks - added by Run 25-9-94 */ +/** + * Removes all clients and downlinks (+clients) of any server + * QUITs are generated and sent to local users. + * @param cptr server that must have all dependents removed + * @param sptr source who thought that this was a good idea + * @param comment comment sent as sign off message to local clients + */ +static void exit_downlinks(struct Client *cptr, struct Client *sptr, char *comment) +{ + struct Client *acptr; + struct DLink *next; + struct DLink *lp; + struct Client **acptrp; + int i; + + /* Run over all its downlinks */ + for (lp = cli_serv(cptr)->down; lp; lp = next) + { + next = lp->next; + acptr = lp->value.cptr; + /* Remove the downlinks and client of the downlink */ + exit_downlinks(acptr, sptr, comment); + /* Remove the downlink itself */ + exit_one_client(acptr, cli_name(&me)); + } + /* Remove all clients of this server */ + acptrp = cli_serv(cptr)->client_list; + for (i = 0; i <= cli_serv(cptr)->nn_mask; ++acptrp, ++i) { + if (*acptrp) + exit_one_client(*acptrp, comment); + } +} + +/* exit_client, rewritten 25-9-94 by Run */ +/** + * Exits a client of *any* type (user, server, etc) + * from this server. Also, this generates all necessary prototol + * messages that this exit may cause. + * + * This function implicitly exits all other clients depending on + * this connection. + * + * For convenience, this function returns a suitable value for + * m_function return value: + * + * CPTR_KILLED if (cptr == bcptr) + * 0 if (cptr != bcptr) + * + * This function can be called in two ways: + * 1) From before or in parse(), exiting the 'cptr', in which case it was + * invoked as exit_client(cptr, cptr, &me,...), causing it to always + * return CPTR_KILLED. + * 2) Via parse from a m_function call, in which case it was invoked as + * exit_client(cptr, acptr, sptr, ...). Here 'sptr' is known; the client + * that generated the message in a way that we can assume he already + * did remove acptr from memory himself (or in other cases we don't mind + * because he will be delinked.) Or invoked as: + * exit_client(cptr, acptr/sptr, &me, ...) when WE decide this one should + * be removed. + * In general: No generated SQUIT or QUIT should be sent to source link + * sptr->from. And CPTR_KILLED should be returned if cptr got removed (too). + * + * --Run + * @param cptr Connection currently being handled by read_message. + * @param victim Client being killed. + * @param killer Client that made the decision to remove \a victim. + * @param comment Reason for the exit. + * @return CPTR_KILLED if cptr == bcptr, else 0. + */ +int exit_client(struct Client *cptr, + struct Client* victim, + struct Client* killer, + const char* comment) +{ + struct Client* acptr = 0; + struct DLink *dlp; + time_t on_for; + + char comment1[HOSTLEN + HOSTLEN + 2]; + assert(killer); + if (MyConnect(victim)) + { + SetFlag(victim, FLAG_CLOSING); + + if (feature_bool(FEAT_CONNEXIT_NOTICES) && IsUser(victim)) + sendto_opmask_butone(0, SNO_CONNEXIT, + "Client exiting: %s (%s@%s) [%s] [%s] <%s%s>", + cli_name(victim), cli_user(victim)->username, + cli_user(victim)->host, comment, + ircd_ntoa(&cli_ip(victim)), + NumNick(victim) /* two %s's */); + update_load(); + + on_for = CurrentTime - cli_firsttime(victim); + + if (IsUser(victim) || IsUserPort(victim)) + auth_send_exit(victim); + + if (IsUser(victim)) + log_write(LS_USER, L_TRACE, 0, "%Tu %i %s@%s %s %s %s%s %s :%s", + cli_firsttime(victim), on_for, + cli_user(victim)->username, cli_sockhost(victim), + ircd_ntoa(&cli_ip(victim)), + cli_account(victim), + NumNick(victim), /* two %s's */ + cli_name(victim), cli_info(victim)); + + if (victim != cli_from(killer) /* The source knows already */ + && IsClient(victim)) /* Not a Ping struct or Log file */ + { + if (IsServer(victim) || IsHandshake(victim)) + sendcmdto_one(killer, CMD_SQUIT, victim, "%s 0 :%s", cli_name(&me), comment); + else if (!IsConnecting(victim)) { + if (!IsDead(victim)) { + if (IsServer(victim)) + sendcmdto_one(killer, CMD_ERROR, victim, + ":Closing Link: %s by %s (%s)", cli_name(victim), + cli_name(killer), comment); + else + sendrawto_one(victim, MSG_ERROR " :Closing Link: %s by %s (%s)", + cli_name(victim), + cli_name(IsServer(killer) ? &his : killer), + comment); + } + } + if ((IsServer(victim) || IsHandshake(victim) || IsConnecting(victim)) && + (killer == &me || (IsServer(killer) && + (strncmp(comment, "Leaf-only link", 14) || + strncmp(comment, "Non-Hub link", 12))))) + { + /* + * Note: check user == user needed to make sure we have the same + * client + */ + if (cli_serv(victim)->user && *(cli_serv(victim))->by && + (acptr = findNUser(cli_serv(victim)->by))) { + if (cli_user(acptr) == cli_serv(victim)->user) { + sendcmdto_one(&me, CMD_NOTICE, acptr, + "%C :Link with %s canceled: %s", acptr, + cli_name(victim), comment); + } + else { + /* + * not right client, set by to empty string + */ + acptr = 0; + *(cli_serv(victim))->by = '\0'; + } + } + if (killer == &me) + sendto_opmask_butone(acptr, SNO_OLDSNO, "Link with %s canceled: %s", + cli_name(victim), comment); + } + } + /* + * Close the Client connection first. + */ + close_connection(victim); + } + + if (IsServer(victim)) + { + if (feature_bool(FEAT_HIS_NETSPLIT)) + strcpy(comment1, "*.net *.split"); + else + { + strcpy(comment1, cli_name(cli_serv(victim)->up)); + strcat(comment1, " "); + strcat(comment1, cli_name(victim)); + } + + if (IsUser(killer)) + sendto_opmask_butone(killer, SNO_OLDSNO, "%s SQUIT by %s [%s]:", + (cli_user(killer)->server == victim || + cli_user(killer)->server == cli_serv(victim)->up) ? + "Local" : "Remote", + get_client_name(killer, HIDE_IP), + cli_name(cli_user(killer)->server)); + else if (killer != &me && cli_serv(victim)->up != killer) + sendto_opmask_butone(0, SNO_OLDSNO, "Received SQUIT %s from %s :", + cli_name(victim), IsServer(killer) ? cli_name(killer) : + get_client_name(killer, HIDE_IP)); + sendto_opmask_butone(0, SNO_NETWORK, "Net break: %C %C (%s)", + cli_serv(victim)->up, victim, comment); + } + + /* + * First generate the needed protocol for the other server links + * except the source: + */ + for (dlp = cli_serv(&me)->down; dlp; dlp = dlp->next) { + if (dlp->value.cptr != cli_from(killer) && dlp->value.cptr != victim) + { + if (IsServer(victim)) + sendcmdto_one(killer, CMD_SQUIT, dlp->value.cptr, "%s %Tu :%s", + cli_name(victim), cli_serv(victim)->timestamp, comment); + else if (IsUser(victim) && !HasFlag(victim, FLAG_KILLED)) + sendcmdto_one(victim, CMD_QUIT, dlp->value.cptr, ":%s", comment); + } + } + /* Then remove the client structures */ + if (IsServer(victim)) + exit_downlinks(victim, killer, comment1); + exit_one_client(victim, comment); + + /* + * cptr can only have been killed if it was cptr itself that got killed here, + * because cptr can never have been a dependent of victim --Run + */ + return (cptr == victim) ? CPTR_KILLED : 0; +} + +/** + * Exit client with formatted va_list message. + * Thin wrapper around exit_client(). + * @param cptr Connection being processed. + * @param bcptr Connection being closed. + * @param sptr Connection who asked to close the victim. + * @param pattern Format string for message. + * @param vl Stdargs argument list. + * @return Has a tail call to exit_client(). + */ +/* added 25-9-94 by Run */ +int vexit_client_msg(struct Client *cptr, struct Client *bcptr, struct Client *sptr, + const char *pattern, va_list vl) +{ + char msgbuf[1024]; + ircd_vsnprintf(0, msgbuf, sizeof(msgbuf), pattern, vl); + return exit_client(cptr, bcptr, sptr, msgbuf); +} + +/** + * Exit client with formatted message using a variable-length argument list. + * Thin wrapper around exit_client(). + * @param cptr Connection being processed. + * @param bcptr Connection being closed. + * @param sptr Connection who asked to close the victim. + * @param pattern Format string for message. + * @return Has a tail call to exit_client(). + */ +int exit_client_msg(struct Client *cptr, struct Client *bcptr, + struct Client *sptr, const char *pattern, ...) +{ + va_list vl; + char msgbuf[1024]; + + va_start(vl, pattern); + ircd_vsnprintf(0, msgbuf, sizeof(msgbuf), pattern, vl); + va_end(vl); + + return exit_client(cptr, bcptr, sptr, msgbuf); +} + +/** Initialize global server statistics. */ +/* (Kind of pointless since C guarantees it's already zero'ed, but... */ +void initstats(void) +{ + memset(&ircst, 0, sizeof(ircst)); +} + +/** Report server statistics to a client. + * @param cptr Client who wants statistics. + * @param sd StatDesc structure being looked up (unused). + * @param param Extra parameter passed by user (unused). + */ +void tstats(struct Client *cptr, const struct StatDesc *sd, char *param) +{ + struct Client *acptr; + int i; + struct ServerStatistics *sp; + struct ServerStatistics tmp; + + sp = &tmp; + memcpy(sp, ServerStats, sizeof(struct ServerStatistics)); + for (i = 0; i < MAXCONNECTIONS; i++) + { + if (!(acptr = LocalClientArray[i])) + continue; + if (IsServer(acptr)) + { + sp->is_sbs += cli_sendB(acptr); + sp->is_sbr += cli_receiveB(acptr); + sp->is_sti += CurrentTime - cli_firsttime(acptr); + sp->is_sv++; + } + else if (IsUser(acptr)) + { + sp->is_cbs += cli_sendB(acptr); + sp->is_cbr += cli_receiveB(acptr); + sp->is_cti += CurrentTime - cli_firsttime(acptr); + sp->is_cl++; + } + else if (IsUnknown(acptr)) + sp->is_ni++; + } + + send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, ":accepts %u refused %u", + sp->is_ac, sp->is_ref); + send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, + ":unknown commands %u prefixes %u", sp->is_unco, sp->is_unpf); + send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, + ":nick collisions %u unknown closes %u", sp->is_kill, sp->is_ni); + send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, + ":wrong direction %u empty %u", sp->is_wrdi, sp->is_empt); + send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, + ":numerics seen %u mode fakes %u", sp->is_num, sp->is_fake); + send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, + ":auth successes %u fails %u", sp->is_asuc, sp->is_abad); + send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, ":local connections %u", + sp->is_loc); + send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, ":Client server"); + send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, ":connected %u %u", + sp->is_cl, sp->is_sv); + send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, ":bytes sent %Lu %Lu", + sp->is_cbs, sp->is_sbs); + send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, ":bytes recv %Lu %Lu", + sp->is_cbr, sp->is_sbr); + send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, ":time connected %Lu %Lu", + sp->is_cti, sp->is_sti); +}