--- /dev/null
+/*
+ * 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 <assert.h> -- Now using assert in ircd_log.h */
+#include <fcntl.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+/** 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);
+}
projects / ircu2.10.12-pk.git / blobdiff